Angular fastening tool

Abstract

To improve operability of an angular fastening tool. The angular fastening tool includes a grip portion extending in a front-rear direction, a motor housing portion disposed in front of the grip portion, a motor disposed inside the motor housing portion, a spindle disposed in front of the motor, extending in a direction intersecting the front-rear direction, and rotating by the motor, a front end tool holding portion rotating by the spindle, a trigger lever disposed in the grip portion, and a switch substrate disposed in front of the trigger lever in a position overlapping the motor in an up-down direction.

Description

Technical Field

[0001] The technology disclosed in this specification relates to an angular fastening tool. Background Technology

[0002] Pistol-type electric fastening tools are known. Additionally, there exist angular fastening tools that can perform fastening operations in narrow spaces where the tip of a pistol-type electric fastening tool cannot reach. The motor's rotation axis and output shaft of the angular fastening tool are intersected rather than parallel. The angular fastening tool has a rod-shaped tip that allows the tip to be inserted into narrow working areas for fastening operations.

[0003] Patent Document 1: Japanese Patent No. 5844970 Summary of the Invention

[0004] The output shaft of the angular fastening tool is rod-shaped and separates from the handle. Furthermore, the direction of the handle is different from the direction of the output shaft. Therefore, the user experience is significantly different compared to pistol-type electric fastening tools. During fastening operations, force is applied in a direction that causes the front end to rotate around the handle, thus actuating the tool. The aim is to improve the operability (handling quality) of the angular fastening tool.

[0005] The purpose of the technology disclosed in this specification is to improve the operability of angular fastening tools.

[0006] This specification discloses an angular fastening tool. The angular fastening tool may include: a grip extending in a front-rear direction; a motor housing disposed in front of the grip; a motor disposed inside the motor housing; a spindle disposed in front of the motor, extending in a direction intersecting the front-rear direction, and rotating by the motor; a front tool holding part rotating by the spindle; a trigger stop disposed in the grip; and a switch board disposed in front of the trigger stop at a position overlapping the motor in the vertical direction.

[0007] Based on the above configuration, the operability of angular fastening tools can be improved. Attached Figure Description

[0008] Figure 1 This is a perspective view showing the angular fastening tool involved in the implementation method.

[0009] Figure 2 This is a side view showing the angular fastening tool involved in the embodiment.

[0010] Figure 3 This is a bottom view showing the angular fastening tool involved in the implementation method.

[0011] Figure 4This is a longitudinal sectional view showing the angular fastening tool involved in the embodiment.

[0012] Figure 5 This is a longitudinal sectional view showing the motor housing portion of the angular fastening tool according to the embodiment.

[0013] Figure 6 This is a longitudinal sectional view showing the housing of the angular fastening tool involved in the embodiment.

[0014] Figure 7 This is a cross-sectional view showing the angular fastening tool involved in the embodiment along the left-right direction of the anvil.

[0015] Figure 8 This is a perspective view showing the operation panel involved in the implementation method.

[0016] Figure 9 This is a schematic diagram showing the assembly of the battery pack to the battery holding section according to the embodiment.

[0017] Figure 10 This is a longitudinal sectional view along the front-to-back direction of the lamp unit involved in the embodiment.

[0018] Figure 11 This is an exploded perspective view showing the structure of the lamp unit involved in the embodiment.

[0019] Figure 12 This is a perspective view showing the front of the angular fastening tool involved in the embodiment as viewed from below.

[0020] Figure 13 This is an exploded perspective view showing the assembly of the lampshade into the housing according to the embodiment, viewed from below.

[0021] Figure 14 This is a perspective view showing the housing involved in the embodiment as viewed from below.

[0022] Figure 15 This is a bottom view of the housing after the lampshade has been removed.

[0023] Figure 16 It is a three-dimensional representation of the lampshade.

[0024] Figure 17 This is a perspective view of the control panel in its split state as seen from below.

[0025] Figure 18 This is a perspective view of the housing that holds the control panel.

[0026] Figure 19 This is a side view of the first housing showing the retaining structure of the operation panel.

[0027] Figure 20 This is a side view of the second housing, showing the retaining structure of the operation panel.

[0028] Figure 21 This is a horizontal sectional view of the housing that holds the control panel.

[0029] Figure 22 This is a cross-sectional view along the left-right direction of the housing that holds the control panel.

[0030] Figure 23 This is an exploded 3D view of the control panel as seen from above.

[0031] Figure 24 This is an exploded 3D view of the control panel viewed from below.

[0032] Figure 25 This is a longitudinal sectional view through the locking jaws of the control panel.

[0033] Figure 26 This is a longitudinal sectional view showing the periphery of the bevel gear of the angular fastening tool involved in the embodiment.

[0034] Figure 27 This is an exploded perspective view showing the rear surface of the housing involved in the embodiment.

[0035] Figure 28 This is an exploded perspective view showing the front surface of the motor housing portion according to the embodiment.

[0036] Figure 29 This is an exploded perspective view showing the bevel gear, bearing, and intermediate support components involved in the embodiment.

[0037] Figure 30 This is a longitudinal sectional view showing the intermediate support component involved in the embodiment.

[0038] Figure 31 This is an exploded perspective view showing a sub-assembly of the rotor involved in the implementation method.

[0039] Figure 32 This is a perspective view showing the intermediate support component according to the second embodiment.

[0040] Figure 33 This is an exploded perspective view showing a sub-component of the motor according to the second embodiment.

[0041] Figure 34 This is a cross-sectional view showing the intermediate support component according to the third embodiment.

[0042] Figure 35 This is a cross-sectional view showing the intermediate support member according to the fourth embodiment.

[0043] Figure 36 This is a longitudinal sectional view showing the periphery of the intermediate support member according to the fourth embodiment.

[0044] Figure 37 This is a longitudinal sectional view showing the intermediate support member and the fixing member according to the fifth embodiment.

[0045] Figure 38 This is a longitudinal sectional view showing the front part of the angular fastening tool according to the sixth embodiment.

[0046] Figure 39 This is a perspective view showing the front of the angular fastening tool according to the seventh embodiment, viewed from below.

[0047] Figure 40 This is a bottom view showing the front of the angular fastening tool according to the seventh embodiment.

[0048] Figure 41 This is an exploded perspective view showing the assembly of the lampshade to the housing according to the seventh embodiment, viewed from below.

[0049] Figure 42 This is a longitudinal sectional view along the front-rear direction of the lamp unit according to the seventh embodiment.

[0050] Figure 43 This is a bottom view of the front of the fastening tool from an angle, showing the state of the lampshade after it has been removed according to the seventh embodiment.

[0051] Figure 44 This is a longitudinal sectional view showing the front part of the angular fastening tool according to the seventh embodiment.

[0052] Figure 45 This is a longitudinal sectional view showing the angular fastening tool according to the seventh embodiment.

[0053] Figure 46 This is a longitudinal sectional view showing the middle portion of the angular fastening tool according to the seventh embodiment.

[0054] Figure 47 This is a longitudinal sectional view used to illustrate the vertical positional relationship of the various parts of the angular fastening tool involved in the seventh embodiment.

[0055] Figure 48 This is a perspective view of the battery holding part of the angular fastening tool according to the seventh embodiment, viewed from a rear-oblique upper view.

[0056] Figure 49 This is a longitudinal sectional view used to illustrate the positional relationship of each part of the angular fastening tool involved in the seventh embodiment in the front-back direction.

[0057] Figure 50 This is a cross-sectional view of the gripping part according to the seventh embodiment, viewed from the front.

[0058] Figure 51 This is a longitudinal sectional view of a modified example of the configuration of the operation panel. Detailed Implementation

[0059] In one or more embodiments, the angular fastening tool may include: a gripping portion extending in a front-rear direction; a motor housing portion disposed in front of the gripping portion; a motor disposed inside the motor housing portion; a spindle disposed in front of the motor, extending in a direction intersecting the front-rear direction, and rotating by the motor; a front tool holding portion rotating by the spindle; a trigger stop disposed in the gripping portion; and a switch board disposed in front of the trigger stop at a position overlapping the motor in the vertical direction.

[0060] Based on the above configuration, the front-rear position of the switch board is brought close to the motor until the switch board overlaps with the motor in the vertical direction. Correspondingly, the trigger stop can also be positioned near the rear of the switch board. By bringing the switch board, motor, and trigger stop close together in the front-rear direction, the entire length of the angular fastening tool can be suppressed, and the operability of the trigger stop and the switch operation can be improved. As a result, the operability of the angular fastening tool can be improved.

[0061] In one or more embodiments, the switch board may also have its front end overlapping the rear part of the motor in the vertical direction, and its rear end overlapping the front part of the trigger stop in the vertical direction.

[0062] Based on the above configuration, the switch board, motor, and trigger stop can be brought close together in the front-to-back direction. By concentrating these components near the gripping area, the entire length of the angular fastening tool can be suppressed, and the operability of the trigger stop and switch operation can be effectively improved.

[0063] In one or more embodiments, the motor may include a stator and a rotor capable of rotating relative to the stator. The angular fastening tool may further include bearings disposed on the front and rear sides relative to the rotor, supporting the rotor for rotation. The distance between the trigger stop and the rear-side bearing in the front-rear direction may be less than the length of the switch board in the front-rear direction.

[0064] Based on the above configuration, the trigger stop can be positioned close to the bearing on the rear side of the rotating support of the motor. The overall length of the angular fastening tool can be suppressed, and by placing the motor, which acts as a weight-bearing device, near the trigger stop, the center of gravity of the angular fastening tool can be brought close to the trigger stop. Consequently, the handling of the angular fastening tool is improved because the front tool holder is easily movable.

[0065] In one or more embodiments, the angular fastening tool may further include: a controller connected to the switch board via wiring and disposed at a position further rearward than the switch board.

[0066] Based on the above configuration, by placing the controller further rearward than the switch board, it is not necessary to place the controller below the switch board. As a result, the space below the switch board (between the motor and the trigger switch) can be shortened both frontally and rearward.

[0067] In one or more embodiments, the angular fastening tool may further include a battery holding part connected to the rear end of the gripping part and holding the battery in a removable manner. A controller may be disposed in the battery holding part.

[0068] Based on the above configuration, the battery holding section for battery assembly ensures sufficient storage space for the controller. Even when the controller is positioned further rearward than the switch board, the possibility of an excessively large overall length for the angular fastening tool can be prevented.

[0069] In one or more embodiments, the distance between the trigger shift and the motor in the front-to-back direction can be less than the distance between the trigger shift and the controller in the front-to-back direction.

[0070] Based on the above configuration, the distance from the trigger shift to the front motor can be shortened compared to the distance from the trigger shift to the controller on the rear side. As a result, the overall length of the angular fastening tool can be reduced. With the battery, which is a weight component, mounted in the battery holder, weight balance can be easily achieved on the front and rear sides of the trigger shift, thereby improving the handling of the angular fastening tool.

[0071] In one or more embodiments, the switch substrate may have an operation button. The trigger stop may include: a pressing surface that is pressed during a pull operation, and a rotating shaft that rotates the pressing surface along with the pressing. In the front-rear direction, the distance from the center of the rotating shaft to the operation button may be less than the distance from the center of the rotating shaft to the rear end of the pressing surface.

[0072] Based on the above configuration, the operation button can be positioned sufficiently close to the trigger switch. Therefore, while the operator is holding the grip, the operability of both pulling the trigger switch and pressing the operation button can be improved.

[0073] In one or more embodiments, the motor may have a stator and a rotor capable of rotating relative to the stator. The switch board may overlap with both the stator and the rotor in the vertical direction.

[0074] Based on the above configuration, since the switch board and the motor can be brought closer together in the front-to-back direction, the overall length of the angular fastening tool can be suppressed. Because the center of gravity of the angular fastening tool can be positioned close to the trigger stop, the handleability of the angular fastening tool is excellent.

[0075] In one or more embodiments, the main shaft may extend downward along a rotation axis orthogonal to the front-back direction.

[0076] Based on the above configuration, the lower end of the angular fastening tool equipped with the spindle can be positioned on the front of the working area for fastening.

[0077] In one or more embodiments, the angular fastening tool may further include: a hammer that moves relative to the spindle, and an anvil that is struck directly or indirectly in the rotational direction by the hammer. A tool holder may be disposed at the lower end of the anvil.

[0078] Based on the above configuration, even angular fastening tools suitable for operation in confined spaces can achieve the effect of a high tightening torque through hammer strikes. Even with a hammer positioned at the front end of the angular fastening tool, the switch board, motor, and trigger stop are brought closer together in the front-to-back direction, resulting in good weight balance and improved maneuverability.

[0079] In one or more embodiments, the angular fastening tool may further include: a housing and an operating panel. The housing includes: a gripping portion and a motor housing portion. The operating panel includes: a switch substrate, a switch mounted on the switch substrate, and a switch plate mounted on the switch substrate in a manner that surrounds at least a portion of the switch. The housing may have: a panel opening for arranging the switch plate, and a retaining groove formed on the inner surface of the housing. The switch substrate can be held in the housing by inserting a portion of the switch substrate into the retaining groove.

[0080] According to the above configuration, the switch board, which is subjected to external forces during switch operation, can be directly held in place by the housing. Here, when the switch board is held in place by the housing, the switch board and the switch plate are securely fixed with screws in a way that withstands external forces. Then, the switch plate is fixed to the housing, resulting in a large-scale structure around the switch. However, according to the above configuration, since the external forces acting on the switch board are supported by the housing, it is unnecessary to further support the external forces with the switch plate, simplifying the fixing of the switch plate. Therefore, the structure around the switch can be simplified, resulting in miniaturization.

[0081] In one or more embodiments, the angular fastening tool may include: a gripping portion extending in a front-rear direction; a motor housing portion disposed in front of the gripping portion; a motor disposed inside the motor housing portion; a spindle disposed in front of the motor, extending in a direction intersecting the front-rear direction, and rotating by the motor; a front tool holding portion rotating by the spindle; a trigger stop disposed in the gripping portion; a switch board disposed of a switch; and a controller connected to the motor, switch board, and trigger stop via wiring. Alternatively, the motor, switch board, trigger stop, and controller may be arranged sequentially from front to rear.

[0082] According to the above configuration, a controller is arranged behind the motor, switch board, and trigger stop. Since the switch board is located near the surface of the housing, the controller is not located near the switch board between the motor and the trigger stop, thus shortening the distance between them. Because the switch board, motor, and trigger stop can be brought closer together in the front-rear direction, the overall length of the angular fastening tool can be suppressed, and the operability of the trigger stop and the switch operation can be improved. As a result, the operability of the angular fastening tool is improved.

[0083] In one or more embodiments, the motor may include a stator and a rotor capable of rotating relative to the stator. The angular fastening tool may further include bearings disposed on the front and rear sides relative to the rotor and supporting the rotor for rotation. The front end of the switch board may be disposed further forward than the bearing on the rear side.

[0084] Based on the above configuration, since the switch board is close to the motor, the switch board, the motor, and the trigger switch can be brought even closer together.

[0085] In one or more embodiments, the front end of the switch board may be positioned further forward than the rear end of the motor.

[0086] According to the above configuration, the switch board overlaps with the motor in the vertical direction. This allows for a further reduction in the distance between the motor, the switch board, and the trigger stop.

[0087] In one or more embodiments, the angular fastening tool may further include a battery holding part connected to the rear end of the gripping part and holding the battery in a removable manner. A controller may be disposed in the battery holding part.

[0088] Based on the above configuration, the battery holder for assembling the battery ensures sufficient storage space for the controller. Compared to housing the controller inside the gripping section, the gripping section is easier to hold because its overall dimensions (circumference) are not increased. As a result, the maneuverability of angular fastening tools is improved.

[0089] In one or more embodiments, the distance between the trigger shift and the motor in the front-to-back direction can be less than the distance between the trigger shift and the controller in the front-to-back direction.

[0090] Based on the above configuration, the distance from the trigger shift to the front motor can be shortened compared to the distance from the trigger shift to the controller on the rear side. As a result, the overall length of the angular fastening tool can be reduced. With the battery, which is a weight component, mounted in the battery holder, weight balance can be easily achieved on the front and rear sides of the trigger shift, thereby improving the handling of the angular fastening tool.

[0091] In one or more embodiments, the angular fastening tool may further include a battery holding portion connected to the rear end of the gripping portion and holding the battery in a removable manner. The angular fastening tool can be positioned with its center of gravity located between the front and rear ends of the switchboard in the front-rear direction, while the battery is in its assembled state.

[0092] Based on the above configuration, the center of gravity of the angular fastening tool is located between the front and rear ends of the switch board, and is also close to the trigger stop. That is, because the center of gravity of the angular fastening tool is close to the part being held or operated, the operability of the angular fastening tool is improved. Furthermore, it is easier to keep the position of the front tool holding part stable during fastening operations.

[0093] [Postscript]

[0094] In one or more embodiments, the device may be configured to have the following features.

[0095] [Feature 1] The electric work machine includes: a housing and an operation panel, the operation panel including: a switch base plate, a switch mounted on the switch base plate, and a switch plate mounted on the switch base plate in a manner that surrounds at least a portion of the switch, the housing having: a panel opening for the switch plate to be disposed, and a retaining groove formed on the inner surface of the housing, wherein the switch base plate is retained in the housing by inserting a portion of the switch base plate into the retaining groove.

[0096] [Feature 2] Based on the electric work machine described in Feature 1, the housing is formed by combining a first housing and a second housing. The first housing includes the panel opening and a first part of the retaining groove. The second housing includes the panel opening and a second part of the retaining groove. The retaining groove is disposed on at least one of the joint surfaces of the first housing and the second housing on one end side and the other end side of the switch substrate, and extends along a first direction orthogonal to the joint surface.

[0097] [Feature 3] Based on the electric work machine described in Feature 2, the retaining groove is provided on both one end side and the other end side of the switch board.

[0098] [Feature 4] Based on the electric working machine described in Feature 2, in a second direction connecting one end and the other end of the switch substrate in a cross section along the joint surface, there is a first narrow slit between the first portion of the retaining groove and the switch substrate, and in the second direction, there is a second narrow slit larger than the first narrow slit between the second portion of the retaining groove and the switch substrate.

[0099] [Feature 5] Based on the electric work machine described in Feature 2, at least one of the first housing and the second housing has a support surface for supporting the switch substrate at a position adjacent to the switch substrate on the opposite side of the panel opening, the support surface being disposed at a position contacting the edge portion of the switch substrate in the first direction.

[0100] [Feature 6] Based on the electric work machine described in Feature 5, both the first housing and the second housing have the support surface.

[0101] [Feature 7] Based on the electric work machine described in Feature 5, the retaining groove has a protrusion protruding toward the surface of the switch substrate on which the switch is mounted, the protrusion being in close contact with the surface of the switch substrate with elastic deformation.

[0102] [Feature 8] Based on the electric work machine described in Feature 1, the switch plate has: a plate portion, and a first engagement claw and a second engagement claw disposed at opposing positions on the outer periphery of the plate portion and respectively engaging with the switch base plate.

[0103] [Feature 9] Based on the electric working machine described in Feature 8, the first engaging claw has an L-shape that enables the switch base plate to be disposed between the plate portion and the first engaging claw, and the second engaging claw has a snap-fit ​​shape that enables it to engage and disengage relative to the switch base plate through elastic deformation.

[0104] [Feature 10] Based on the electric working machine described in Feature 9, the width of the first engaging claw is greater than the width of the second engaging claw.

[0105] [Feature 11] Based on the electric working machine described in Feature 9, the protrusion height of the first engaging claw from the plate portion is less than the protrusion height of the second engaging claw from the plate portion.

[0106] [Feature 12] Based on the electric working machine described in Feature 8, a first defect portion for a portion of the first engaging claw and a second defect portion for a portion of the second engaging claw are formed on the outer periphery of the switch substrate.

[0107] [Feature 13] Based on the electric work machine described in Feature 1, the switch plate includes: a plate portion having a thickness greater than that of the switch, and a switch label disposed on the surface of the plate portion and covering the switch, the switch label having: a convex cross-sectional shape including a top surface and corners.

[0108] [Feature 14] Based on the electric work machine described in Feature 13, the plate portion has: a central portion that is recessed relative to the peripheral portion, the switch label being disposed in the central portion of the plate portion, and the protrusion height of the peripheral portion protruding from the switch base plate being greater than the protrusion height of the top surface of the switch label protruding from the switch base plate.

[0109] The electric working machine comprised of these features 1 to 14 can be either an electric fastening tool other than an angular fastening tool, or an electric tool other than an electric fastening tool. An electric working machine can also be a working machine other than an electric tool.

[0110] Hereinafter, the embodiments will be described with reference to the accompanying drawings. In the embodiments, the terms front, back, left, right, top, and bottom are used to describe the positional relationships of the various parts. The above terms indicate the relative position or direction based on the center of the angular fastening tool.

[0111] [First Implementation]

[0112] Figure 1 This is a perspective view showing the angular fastening tool 1 involved in the embodiment. Figure 2 This is a side view showing the angular fastening tool 1 involved in the embodiment. Figure 3 This is a bottom view showing the angular fastening tool 1 involved in the embodiment. Figure 4 This is a longitudinal sectional view showing the angular fastening tool 1 involved in the embodiment. Figure 5 This is a longitudinal sectional view showing the motor housing portion 21 of the angular fastening tool 1 according to the embodiment. Figure 6 This is a longitudinal sectional view showing the housing 4 of the angular fastening tool 1 according to the embodiment. Figure 7 This is a cross-sectional view of the angular fastening tool 1 according to the embodiment, along the left-right direction of the anvil 10.

[0113] In this embodiment, the angular fastening tool 1 is an electric tool equipped with an electric motor 6 as a power source. The direction parallel to the rotation axis AX of the motor 6 is appropriately referred to as the axial direction, the direction surrounding the rotation axis AX is appropriately referred to as the circumferential direction or rotational direction, and the radial direction of the rotation axis AX is appropriately referred to as the radial direction. Furthermore, in the radial direction, the position closer to or approaching the rotation axis AX is appropriately referred to as the radial inner side or inner circumferential side, and the position farther from or away from the rotation axis AX is appropriately referred to as the radial outer side or outer circumferential side. In this embodiment, the rotation axis AX extends along the front-rear direction. One side of the axial direction is the front side (forward), and the other side of the axial direction is the rear side (backward).

[0114] In this embodiment, the angular fastening tool 1 is an angular impact wrench. The angular fastening tool 1 includes: a housing 2, a casing 4, a motor 6, a reduction mechanism 7, a spindle 8, an impact mechanism 9, an anvil 10, a fan 12, a battery assembly 13, a trigger switch 14, a forward / reverse switching switch 15, an operation panel 16, a lamp unit 17, and a controller 18.

[0115] The outer casing 2 is made of synthetic resin. The outer casing 2 consists of a pair of left and right halves. The pair of halves are fixed together by multiple screws 2S.

[0116] The housing 2 includes: a motor housing portion 21, a grip portion 22, and a battery holding portion 23.

[0117] The motor housing 21 forms the front part of the housing 2. The motor housing 21 is located in front of the handle 22. The motor housing 21 is cylindrical. The motor housing 21 houses the motor 6. The motor housing 21 houses the motor 6, the fan 12, and the bearing 38R. The operation panel 16 is located on the upper part of the motor housing 21.

[0118] The grip portion 22 extends in the front-to-back direction. The grip portion 22 extends rearward from the motor housing portion 21. The grip portion 22 is held by the operator. A trigger stop 14 and a grip body 22A are provided in the grip portion 22. The trigger stop 14 is located at the front end of the grip portion 22. The trigger stop 14 is located at the lower part of the grip portion 22. The grip body 22A is located further rearward than the trigger stop 14. The grip body 22A is cylindrical. The grip body 22A is the part of the grip portion 22 that the operator grips. The grip body 22A is longer than the trigger stop 14 in the front-to-back direction. The lower surface of the grip body 22A is located higher than the lower surface 21P of the motor housing portion 21.

[0119] like Figure 2 As shown, the circumference of the thinnest part 22N of the gripping portion 22 is smaller than the circumference of the thinnest part 21N of the motor housing portion 21. The circumference of the thinnest part 22N of the gripping portion 22 is, for example, 150 mm or less, preferably 140 mm or less, more preferably 130 mm or less, and even more preferably 120 mm or less. Figure 3 In this example, the finest part 22N of the gripping part 22 is the rear end of the gripping part 22 (the connection part connected to the battery holding part 23), and the circumference of the gripping part 22 is, for example, 115 mm. The circumference of the finest part 21N of the motor housing part 21 is, for example, 200 mm or less, preferably 180 mm or less, more preferably 160 mm or less, and even more preferably 155 mm or less. Figure 3 In the example, the circumference of the finest part 21N of the motor housing 21 is 200mm.

[0120] The battery holding part 23 is connected to the rear end of the gripping part 22. The battery holding part 23 houses the controller 18. The battery holding part 23 holds the battery 25. The battery 25 is mounted on a battery mounting part 13 provided on the lower surface of the battery holding part 23.

[0121] The motor housing 21 has an air inlet 19 and an exhaust outlet 20. The air inlet 19 and the exhaust outlet 20 are located on the left and right sides of the motor housing 21. Air from the external space of the housing 2 flows into the internal space of the housing 2 through the air inlet 19. Air from the internal space of the housing 2 flows out to the external space of the housing 2 through the exhaust outlet 20.

[0122] The outer casing 2 and the housing 4 are arranged in the front-to-back direction. The motor outer casing 21 and the housing 4 are connected in the front-to-back direction. The front part of the outer casing 2 and the rear part of the housing 4 are connected. The outer casing 2 and the housing 4 are fixed together by screws 70.

[0123] The housing 4 is connected to the front of the motor housing 21. The motor housing 21 is fixed to the rear of the housing 4. A housing flange 21F is provided at the front end of the motor housing 21. A housing flange 4F with multiple bosses 4H is provided at the rear end of the housing 4. A screw 70 passes through the screw insertion hole of the housing flange 21F and engages with the bosses 4H, thereby fixing the housing 4 and the motor housing 21.

[0124] The housing 4 houses the bevel gear 35, which serves as a pinion. The housing 4 houses the reduction mechanism 7. The housing 4 houses the main shaft 8. The housing 4 houses the striking mechanism 9, which includes a hammer 47. The housing 4 houses a portion of the anvil 10. The housing 4 is made of metal. In this embodiment, the housing 4 is made of aluminum. The housing 4 is hollow and box-shaped.

[0125] The housing 4 includes a housing body 4A and a cover 4B. The housing body 4A is a hollow box shape with openings on its rear and upper surfaces. The rear surface of the housing body 4A is connected to and covered by the motor housing portion 21 of the housing 2. The upper surface of the housing body 4A is covered by the cover 4B. The cover 4B extends from the front end of the upper surface of the housing body 4A to the near-front side of the rear end and is fixed to the housing body 4A by screws 4S. With the reduction mechanism portion 7, the main shaft 8, the striking mechanism 9, and the anvil 10 assembled in the openings on the upper surface of the housing body 4A, the cover 4B is assembled to the housing body 4A, thereby accommodating the aforementioned parts.

[0126] The housing 4 has: a front surface, left and right side surfaces, and a lower surface, all formed by the housing body 4A. For example... Figure 7 As shown, the lower surface of the housing 4 has a flat mounting surface 81 and a cylindrical portion 82 protruding downward from the mounting surface 81. The mounting surface 81 is a surface along the front-back direction and the left-right direction. The mounting surface 81 connects the front surface and left and right sides of the housing body 4A and the cylindrical portion 82. A lamp unit 17 and a lampshade 60 are disposed on the mounting surface 81. The mounting surface 81 is covered by the lampshade 60. The cylindrical portion 82 is located near the front surface of the lower surface of the housing 4. The cylindrical portion 82 has a cylindrical shape. The internal opening of the cylindrical portion 82 communicates with the interior of the housing 4. An anvil 10 passes through the cylindrical portion 82. The anvil 10 protrudes downward from the interior of the housing 4 through the cylindrical portion 82.

[0127] The housing 4 holds the bearing 38F, which supports the rotor 27 of the motor 6 so that it can rotate. The reduction gear 7 is located in front of the bearing 38F. The main shaft 8 and the striking mechanism 9 are located in front of the reduction gear 7. The anvil 10 is located below the striking mechanism 9.

[0128] Motor 6 is the power source for the angular fastening tool 1. Motor 6 generates rotational force. Motor 6 is an electric motor. Motor 6 is an internal rotor type brushless motor. Motor 6 is housed in the motor housing portion 21 of the housing 2. Motor 6 is disposed inside the motor housing portion 21.

[0129] like Figure 5 As shown, the motor 6 includes a stator 26 and a rotor 27 rotatable relative to the stator 26. The stator 26 is supported on the motor housing 21. At least a portion of the rotor 27 is disposed inside the stator 26. The rotor 27 rotates relative to the stator 26. The rotor 27 rotates about a rotation axis AX extending in the front-rear direction.

[0130] The stator 26 has: a stator core 28, a front insulator 29, a rear insulator 30, and a coil 31.

[0131] The stator core 28 is positioned radially outward compared to the rotor 27. The stator core 28 comprises multiple stacked steel plates. The steel plates are made of a metal primarily composed of iron. The stator core 28 is cylindrical. The stator core 28 has multiple teeth that support the coils 31.

[0132] The front insulator 29 is located at the front of the stator core 28. The rear insulator 30 is located at the rear of the stator core 28. Both the front insulator 29 and the rear insulator 30 are electrical insulation components made of synthetic resin. The front insulator 29 is configured to cover a portion of the tooth surface. The rear insulator 30 is configured to cover a portion of the tooth surface.

[0133] Coil 31 is mounted on stator core 28 by means of front insulator 29 and rear insulator 30. Multiple coils 31 are arranged. Coil 31 are arranged around the teeth of stator core 28 by means of front insulator 29 and rear insulator 30. The front insulator 29 and rear insulator 30 provide electrical insulation between coil 31 and stator core 28.

[0134] The rotor 27 rotates around the rotation axis AX. The rotor 27 has: a rotor core 32, a rotor shaft 33, and a rotor magnet 34.

[0135] The rotor core portion 32 and the rotor shaft portion 33 are both made of steel. In one embodiment, the rotor core portion 32 and the rotor shaft portion 33 are separate components. Alternatively, the rotor core portion 32 and the rotor shaft portion 33 can be integrally formed. The front portion of the rotor shaft portion 33 protrudes forward from the front end face of the rotor core portion 32. The rear portion of the rotor shaft portion 33 protrudes rearward from the rear end face of the rotor core portion 32.

[0136] The rotor magnet 34 is fixed to the rotor core portion 32. The rotor magnet 34 extends in the front-to-back direction in a manner that passes through the rotor core portion 32.

[0137] A sensor substrate 37 is mounted on the rear insulator 30. The sensor substrate 37 has an annular circuit board and a magnetic sensor supported on the circuit board. At least a portion of the sensor substrate 37 faces the rotor magnet 34. The magnetic sensor detects the rotational direction of the rotor 27 by detecting the magnetic force of the rotor magnet 34.

[0138] Bearings (38F and 38R) are respectively disposed on the front and rear sides relative to the rotor 27. Bearings (38F and 38R) support the rotor 27 for rotation. The rear portion of the rotor shaft 33 is supported for rotation by bearing 38R. The front portion of the rotor shaft 33 is supported for rotation by bearing 38F. Bearing 38R is held in the housing 2. Bearing 38R is housed in a recessed rear retaining portion 21A provided in the motor housing 21. Bearing 38F is housed in a receiving recess 85 provided in the rear portion of the housing 4. The front end of the rotor shaft 33 is disposed within the interior space of the housing 4 via an opening on the front surface of the motor housing 21 and an opening in the rear portion of the housing 4.

[0139] A bevel gear 35 is disposed at the front end of the rotor shaft portion 33. The bevel gear 35 is a small gear that rotates integrally with the rotor 27. The bevel gear 35 is connected to at least a portion of the reduction mechanism portion 7. The rotor shaft portion 33 is connected to the reduction mechanism portion 7 by means of the bevel gear 35.

[0140] like Figure 6 As shown, the reduction mechanism 7 is connected to the bevel gear 35, which is a pinion. The reduction mechanism 7 transmits the rotational force of the motor 6 to the main shaft 8 and the anvil 10. The reduction mechanism 7 is housed in the housing 4. The reduction mechanism 7 has multiple gears. The reduction mechanism 7 is positioned further forward than the motor 6. The reduction mechanism 7 is positioned further forward than the receiving recess 85. The reduction mechanism 7 connects the rotor shaft 33 and the main shaft 8. The gears of the reduction mechanism 7 are driven by the rotor 27. The reduction mechanism 7 transmits the rotation of the rotor 27 to the main shaft 8. The reduction mechanism 7 rotates the main shaft 8 at a speed lower than the rotational speed of the rotor shaft 33.

[0141] The reduction mechanism 7 is composed of multiple reduction stages. The reduction mechanism 7 includes a first reduction stage 41 and a second reduction stage 42. The first reduction stage 41 is connected to a pinion gear and reduces the rotation of the pinion gear. The second reduction stage 42 reduces the rotation of the first reduction stage 41 and transmits the speed to the main shaft 8.

[0142] The first reduction gear 41 includes a driven gear 41A, a first intermediate gear 41B, and a first intermediate shaft 41C. The first intermediate shaft 41C extends in a direction intersecting the rotation axis AX. The first intermediate shaft 41C extends in a vertical direction orthogonal to the rotation axis AX and rotates about a central axis in the vertical direction. Both ends of the first intermediate shaft 41C are supported by intermediate bearings 41D to enable rotation. The intermediate bearings 41D are held in the housing 4. The intermediate bearings 41D are ball bearings. The driven gear 41A and the first intermediate gear 41B are fixed to the first intermediate shaft 41C. Alternatively, in this embodiment, the first intermediate gear 41B and the first intermediate shaft 41C are an integral structure. The first intermediate gear 41B and the first intermediate shaft 41C can also be separate structures. The driven gear 41A is mounted on the lower part of the first intermediate shaft 41C, and the first intermediate gear 41B is mounted on the upper part of the first intermediate shaft 41C. The driven gear 41A, the first intermediate gear 41B, and the first intermediate shaft 41C rotate as a unit. Driven gear 41A is a bevel gear that meshes with bevel gear 35, which is a pinion. First intermediate gear 41B is a spur gear. First intermediate gear 41B meshes with second intermediate gear 42A of second reduction unit 42.

[0143] The second reduction gear 42 is positioned in front of the first reduction gear 41. The second reduction gear 42 includes a second intermediate gear 42A and a second intermediate shaft 42B. The second intermediate shaft 42B extends in a direction intersecting the rotation axis AX. The second intermediate shaft 42B extends vertically in a direction orthogonal to the rotation axis AX and rotates about a central axis in the vertical direction. The first intermediate shaft 41C is parallel to the second intermediate shaft 42B. Both ends of the second intermediate shaft 42B are supported by intermediate bearings 42C, allowing it to rotate. The intermediate bearings 42C are held in the housing 4. The intermediate bearings 42C are sliding bearings. The second intermediate gear 42A is fixed to the second intermediate shaft 42B. The second intermediate gear 42A is mounted on the upper part of the second intermediate shaft 42B. The second intermediate gear 42A and the second intermediate shaft 42B rotate integrally. The second intermediate gear 42A is a spur gear. The second intermediate gear 42A meshes with the first intermediate gear 41B. The second intermediate gear 42A reduces the rotation of the first intermediate gear 41B, thus rotating itself. The second intermediate gear 42A meshes with the main shaft gear 8C of the main shaft 8. The main shaft gear 8C rotates integrally with the main shaft 8. The main shaft gear 8C is a spur gear.

[0144] When the rotor shaft 33 is rotated by the drive of the motor 6, the bevel gear 35 rotates, causing the driven gear 41A to rotate. The rotation of the driven gear 41A causes the first intermediate shaft 41C to rotate at a speed lower than the rotational speed of the rotor shaft 33. When the first intermediate shaft 41C rotates, the first intermediate gear 41B rotates, causing the second intermediate gear 42A to rotate. The rotation of the second intermediate gear 42A causes the second intermediate gear 42A to rotate at a speed lower than the rotational speed of the first intermediate shaft 41C. The second intermediate gear 42A causes the main shaft gear 8C to rotate. The main shaft gear 8C rotates at a speed lower than the rotational speed of the second intermediate gear 42A. The main shaft 8 rotates in tandem with the rotation of the main shaft gear 8C. The main shaft 8 rotates at a speed lower than the rotational speed of the rotor shaft 33.

[0145] The main shaft 8 is connected to the reduction gear unit 7. The main shaft 8 is rotated by the motor 6. The main shaft 8 is positioned in front of the motor 6. The main shaft 8 is positioned further forward than the stator 26. The main shaft 8 is positioned further forward than the rotor 27. At least a portion of the main shaft 8 is positioned in front of the reduction gear unit 7. The main shaft 8 is rotated by the rotor 27. The main shaft 8 is rotated by the rotational force of the rotor 27 transmitted from the reduction gear unit 7.

[0146] The main shaft 8 extends along a direction intersecting the front-rear direction. The main shaft 8 extends downward along a rotation axis BX orthogonal to the front-rear direction. The main shaft 8 rotates around the rotation axis BX. The rotation axis BX of the main shaft 8 and the rotation axis AX of the motor 6 are not parallel but intersect each other. The direction of the rotation axis BX of the main shaft 8 can intersect the front-rear direction (i.e., the rotation axis AX) at any angle between 80 degrees and 100 degrees. In this embodiment, the main shaft 8, the hammer 47, and the anvil 10 are arranged along the rotation axis BX and rotate around the rotation axis BX.

[0147] The spindle 8 has a flange portion 8A and a spindle shaft portion 8B that protrudes downward from the flange portion 8A. A spindle gear 8C is disposed on the outer periphery of the flange portion 8A.

[0148] The spindle 8 is supported by a spindle bearing 44 for rotation. The spindle bearing 44 is held in the housing 4. The spindle 8 has a cylindrical portion 8D that protrudes upward from the upper part of the flange portion 8A. The spindle bearing 44 is disposed on the outer periphery of the cylindrical portion 8D. The spindle bearing 44 supports the outer periphery of the cylindrical portion 8D for rotation. The spindle bearing 44 is a sliding bearing. A cylindrical protrusion protruding downward is provided at the lower end of the spindle shaft portion 8B. The protrusion is disposed within an anvil recess 10C formed on the upper surface of the anvil 10. The lower part of the spindle 8 is supported by anvil bearing 46 via the anvil 10 for rotation.

[0149] The striking mechanism 9 is driven by the motor 6. The rotational force of the motor 6 is transmitted to the striking mechanism 9 via the reduction gear 7 and the main shaft 8. Based on the rotational force of the shaft 8, which rotates via the motor 6, the striking mechanism 9 strikes the anvil 10 in the rotational direction. Figure 6 as well as Figure 7 As shown, the striking mechanism 9 includes a hammer 47, a ball bearing 48, and a coil spring 49. The striking mechanism 9, including the hammer 47, is housed in the housing 4. The striking mechanism 9 is positioned between the spindle 8 and the anvil 10 in the housing 4. The striking mechanism 9 is located below the flange 8A of the spindle 8.

[0150] Hammer 47 is positioned further forward than the reduction gear 7. Hammer 47 is housed in housing 4. Hammer 47 rotates via spindle 8. Hammer 47 is positioned around spindle shaft 8B. Hammer 47 is held in spindle shaft 8B. Ball bearings 48 are positioned between spindle shaft 8B and hammer 47. Coil springs 49 are supported on flange 8A and hammer 47.

[0151] Hammer 47 has: a main body 47D, a hammer groove 47A, and a hammer protrusion 47B (see reference). Figure 7 The main body 47D is disposed around the spindle shaft 8B. The main body 47D is annular. A recess 47C is provided at the rear of the main body 47D. The recess 47C is configured to be recessed from the rear end of the main body 47D toward the front. The recess 47C is annular. Two hammer protrusions 47B protrude from the main body 47D toward the front.

[0152] Hammer 47 rotates via motor 6. The rotational force of motor 6 is transmitted to hammer 47 via reduction gear 7 and main shaft 8. Hammer 47 rotates together with main shaft 8 based on the rotational force of main shaft 8, which rotates via motor 6. The rotation axis of hammer 47 and the rotation axis BX of main shaft 8 are aligned. Hammer 47 rotates around rotation axis BX. Hammer 47 moves relative to main shaft 8. Hammer 47 moves relative to main shaft 8 in the vertical direction.

[0153] The ball bearing 48 is made of a metal such as steel. The ball bearing 48 is disposed between the spindle shaft portion 8B and the hammer 47. The spindle 8 has a spindle groove 8F for at least a portion of the ball bearing 48. The spindle groove 8F is located on a portion of the outer peripheral surface of the spindle shaft portion 8B. The hammer 47 has a hammer groove 47A for at least a portion of the ball bearing 48. The hammer groove 47A is located on a portion of the inner surface of the main body portion 47D. The ball bearing 48 is disposed between the spindle groove 8F and the hammer groove 47A. The ball bearing 48 can roll within the inner side of the spindle groove 8F and the inner side of the hammer groove 47A, respectively. The hammer 47 can move along with the ball bearing 48. The spindle 8 and the hammer 47 can move relative to each other along the axial direction and the rotational direction, respectively, within the movable range defined by the spindle groove 8F and the hammer groove 47A.

[0154] A coil spring 49 generates a spring force that moves the hammer 47 downwards. The coil spring 49 is disposed between the flange 8A and the hammer 47. The lower part of the coil spring 49 is disposed in an annular recess 47C on the rear surface of the hammer 47. A washer 45 is disposed inside the recess 47C. The washer 45 is supported on the main body 47D by means of a ball bearing 50. The upper end of the coil spring 49 is supported on the flange 8A. The lower end of the coil spring 49 is supported by the washer 45. The hammer 47 and the coil spring 49 can rotate relative to each other around the rotation axis BX by clamping the washer 45 and the ball bearing 50.

[0155] The anvil 10 is the output part of the angular fastening tool 1. The anvil 10 is rotated by the rotational force of the motor 6. At least a portion of the anvil 10 is positioned further downward than the hammer 47. The anvil 10 is struck directly or indirectly by the hammer 47 in the rotational direction. In this embodiment, the anvil 10 is struck directly by the hammer 47.

[0156] The anvil 10 has a rod-shaped anvil shaft portion 10A and an anvil protrusion portion 10B. An anvil recess 10C, receiving the protrusion portion of the spindle shaft portion 8B, is provided at the upper end of the anvil 10. The anvil protrusion portion 10B is provided at the upper end of the anvil 10. The anvil protrusion portion 10B protrudes radially outward from the upper end of the anvil shaft portion 10A. The anvil shaft portion 10A passes through the cylindrical portion 82 from the inside of the housing 4 and protrudes downward towards the outside of the housing 4. The lower end of the anvil shaft portion 10A is exposed outside the housing 4. A front tool holding portion 51 is disposed at the lower end of the anvil 10. The front tool holding portion 51 protrudes downward from the lower surface of the housing 4. The front tool holding portion 51 is provided at the exposed portion at the lower end of the anvil shaft portion 10A. The front tool holding portion 51 is rotated by the spindle 8. The front tool holding portion 51 is rotated by the spindle 8 via the hammer 47 and the anvil 10.

[0157] Regarding the impact wrench according to the embodiment, the front tool holding part 51 is a quadrangular prism-shaped engaging part, which engages with the engaging recess of the sleeve, which serves as the front tool. The sleeve is held in a state of being fitted with the front tool holding part 51.

[0158] Anvil 10 is supported by anvil bearing 46 (see reference) Figure 7 The anvil 10 is rotatable. The rotation axis of the anvil 10 coincides with the rotation axis BX of the main shaft 8. The anvil 10 rotates around the rotation axis BX. Anvil bearing 46 is disposed inside the cylindrical portion 82. Anvil bearing 46 is disposed inside the cylindrical portion 82 of the housing 4. Anvil bearing 46 is held in the cylindrical portion 82. The cylindrical portion 82 is disposed around the anvil shaft portion 10A. Anvil bearing 46 supports the anvil shaft portion 10A so that it can rotate. In this embodiment, anvil bearing 46 is a sliding bearing. An annular groove 46A opposite to anvil bearing 46 is provided in the anvil shaft portion 10A. An annular sealing member 46B is disposed in the groove 46A. Additionally, a washer 52 is provided on the inner bottom surface of the housing 4. The washer 52 is opposite to the anvil protrusion 10B.

[0159] The hammer protrusion 47B can contact the anvil protrusion 10B. When the hammer protrusion 47B and the anvil protrusion 10B are in contact, the motor 6 drives the anvil 10, hammer 47, and spindle 8 to rotate together.

[0160] The anvil 10 is struck in the rotational direction by the hammer 47. For example, in screw tightening operations, when the load on the anvil 10 increases, sometimes the anvil 10 cannot be rotated by the power generated by the motor 6 alone. When the anvil 10 cannot be rotated by the power generated by the motor 6 alone, the rotation of the anvil 10 and the hammer 47 will stop. The spindle 8 and the hammer 47 can move relative to each other in the axial and circumferential directions by means of the balls 48. Even when the rotation of the hammer 47 stops, the spindle 8 continues to rotate due to the power generated by the motor 6. When the rotation of the hammer 47 stops, the balls 48 move upward while being guided by the spindle groove 8F and the hammer groove 47A respectively. The hammer 47 is subjected to force from the balls 48 and moves upward along with the balls 48. That is, when the rotation of the anvil 10 stops, the rotation of the spindle 8 causes the hammer 47 to move upward. The hammer 47 moves upward, thereby releasing the contact between the hammer protrusion 47B and the anvil protrusion 10B.

[0161] The coil spring 49 generates a spring force that moves the hammer 47 downwards. The hammer 47, having moved upwards, moves downwards with the help of the spring force of the coil spring 49. As the hammer 47 moves downwards, it receives a force in the direction of rotation from the ball bearing 48. That is, the hammer 47 rotates while moving downwards. As the hammer 47 rotates and moves downwards, the hammer protrusion 47B rotates and contacts the anvil protrusion 10B. Thus, the anvil protrusion 10B is struck by the hammer protrusion 47B in the direction of rotation. The power of the motor 6 and the inertial force of the hammer 47 act on the anvil 10. Therefore, the anvil 10 can rotate with a high torque around the rotation axis BX.

[0162] Fan 12 rotates due to the rotational force of motor 6. For example... Figure 5 As shown, the fan 12 is positioned further forward than the stator 26 of the motor 6. The fan 12 generates airflow for cooling the motor 6. The fan 12 is fixed to at least a portion of the rotor 27. The fan 12 is fixed to the front of the rotor shaft 33. The fan 12 is positioned between the bearing 38F and the stator 26. The fan 12 rotates due to the rotation of the rotor 27. The rotation of the rotor shaft 33 causes the fan 12 to rotate together with the rotor shaft 33. The rotation of the fan 12 causes air from the external space of the housing 2 to flow into the internal space of the housing 2 through the air inlet 19. The air flowing into the internal space of the housing 2 circulates within the internal space of the housing 2, thereby cooling the motor 6. The air circulating within the internal space of the housing 2 is discharged towards the external space of the housing 2 through the exhaust port 20 by the rotation of the fan 12.

[0163] like Figure 1 as well as Figure 5 As shown, the operation panel 16 is disposed on the motor housing portion 21. The operation panel 16 is exposed to the outside through a panel opening 21B formed on the upper surface of the motor housing portion 21. The operation panel 16 is disposed near the rear of the motor housing portion 21, close to the grip portion 22. The operation panel 16 is disposed further forward than the trigger shift 14. At least a portion of the operation panel 16 overlaps with the motor 6 in the vertical direction. At least a portion of the operation panel 16 overlaps with the bearing 38R in the vertical direction.

[0164] Figure 8 This is a perspective view showing the operation panel 16 involved in the embodiment. Figure 8The diagram shows the state where the right side of the housing 2 has been removed, exposing a portion of the operation panel 16. The operation panel 16 is plate-shaped. The operation panel 16 includes: an operation button 16A, an indicator display 16B, and a switch substrate 16C. A bracket 16D is embedded in the panel opening 21B. The switch substrate 16C has a flat plate shape. A switch is provided on the switch substrate 16C. The switch can be, for example, the operation button 16A, but it can also be a switch other than a button, such as a dual-in-line switch, a rocker switch, or a rotary switch. Specifically, the switch substrate 16C is a circuit board on which the operation button 16A and the indicator display 16B are provided, and the switch substrate 16C is connected to the controller 18 via wiring. The motor housing 21 has a retaining groove 21C located directly below the panel opening 21B to support the outer periphery of the switch substrate 16C. The operation panel 16 is held in the motor housing 21 by the outer periphery of the switch substrate 16C being embedded in the retaining groove 21C. The switch board 16C is disposed on the upper part of the motor housing 21 and along the upper surface of the motor housing 21. The operation panel 16 outputs a signal corresponding to the input of the operation button 16A to the controller 18, and displays information based on the indicator display 16B according to the signal from the controller 18.

[0165] The operator operates the control button 16A, thereby switching the operating mode of the motor 6 via the controller 18. The indicator display 16B has light-emitting elements, such as LEDs. The indicator display 16B displays the operating mode of the motor 6 by changing the illumination pattern of multiple light-emitting elements. Operating modes include, for example, three different levels of speed setting for the motor 6: strong, medium, and weak; a mode that stops the motor 6 based on monitoring the initiation of the striking mechanism 9; and a mode that switches the motor 6 to a stopped or low-speed rotation based on monitoring the rotation of the nut when the nut is loosened.

[0166] Figure 9 This is a schematic diagram showing the assembly of the battery 25 to the battery holding part 23 according to the embodiment. Figure 9 The image shows the battery housing 2 with its right side portion removed, exposing the interior of the battery holder 23. Figure 4 as well as Figure 9As shown, the battery assembly section 13 is disposed at the lower part of the battery holding section 23. The battery 25 is assembled to the battery assembly section 13. The battery 25 can be installed and removed relative to the battery assembly section 13. The battery assembly section 13 holds the battery 25 so that it can slide in the front-rear direction. When the battery 25 slides forward from the rear of the battery assembly section 13 and reaches the engaging position, the battery assembly section 13 engages with the engaging hook 25A of the battery 25, thereby restricting the rearward sliding movement of the battery 25. A release button is provided on the battery 25 to allow the engaging hook 25A to move forward and backward in the vertical direction. When the release button is pressed, the engaging hook 25A moves downward and backward, releasing the engaging state between it and the battery assembly section 13. Thus, the battery 25 can be installed and removed.

[0167] The storage battery 25 functions as a power source for the angular fastening tool 1. The storage battery 25 includes a secondary battery. In one embodiment, the storage battery 25 includes a rechargeable lithium-ion battery. The storage battery 25, by being mounted on the battery mounting section 13, is able to supply power to the angular fastening tool 1. The motor 6 and the lamp unit 17 are driven based on the power supplied from the storage battery 25.

[0168] The controller 18 operates based on power supplied from the battery 25. The controller 18 is connected via wiring to the motor 6, the switch board 16C, and the trigger switch 14. The controller 18 is also connected via wiring to the battery 25. The wiring passes through the interior of the grip section 22.

[0169] The controller 18 outputs control signals to control the motor 6. The controller 18 includes a circuit board on which multiple electronic devices are mounted. Examples of electronic devices mounted on the circuit board include processors such as CPUs (Central Processing Units), non-volatile memory such as ROMs (Read Only Memory) or RAMs (Random Access Memory), field-effect transistors (FETs), and resistors. The controller 18 sets the operating mode of the angular fastening tool 1 based on the operation of the operation panel 16. The setting parameters for the operating mode of the angular fastening tool 1 include the current threshold of the motor 6, or on / off control conditions, etc. The controller 18 outputs a signal to the operation panel 16 to display the setting status of the operating mode.

[0170] The controller 18 is positioned further rearward than the switch board 16C. The controller 18 is positioned further rearward than the trigger stop 14. The controller 18 is housed in the battery holding section 23. The controller 18 is positioned above the battery mounting section 13. The controller 18 extends along both the front-to-back and left-to-right directions. The controller 18 is configured to overlap with the upper surface of the battery mounting section 13. The battery holding section 23 has a dome-shaped shape forming the housing space for the controller 18.

[0171] like Figure 4 As shown, a trigger stop 14 is provided on the grip portion 22. The trigger stop 14 is located at the front of the grip portion 22. The trigger stop 14 is configured to protrude downwards from the lower surface of the grip portion 22. The trigger stop 14 is operated by the operator to start the motor 6. A switch body 14A is disposed above the trigger stop 14. The switch body 14A is disposed inside the grip portion 22. The switch body 14A is operated by operating the trigger stop 14. A trigger signal is generated by operating the switch body 14A. The controller 18 switches between driving and stopping the motor 6 based on the trigger signal.

[0172] like Figure 2 As shown, in the vertical direction, the lower end 14B of the trigger stop 14 is positioned higher than the lower end of the front tool holder 51. The lower end 14B of the trigger stop 14 is positioned higher than the lower surface of the battery 25. The lower end 14B of the trigger stop 14 is positioned between the lower end of the front tool holder 51 and the lower surface 21P of the motor housing 21 in the vertical direction. In the vertical direction, the lower end 14B of the trigger stop 14 is positioned closer to the lower surface 21P of the motor housing 21 than the lower end of the front tool holder 51. That is, the vertical distance from the lower end 14B of the trigger stop 14 to the lower surface 21P of the motor housing 21 is less than the vertical distance from the lower end 14B of the trigger stop 14 to the lower end of the front tool holder 51. The lower end 14B of the trigger stop 14 can be positioned higher than the lower surface 21P of the motor housing 21.

[0173] A forward / reverse switching dial 15 is provided on the handle 22. The forward / reverse switching dial 15 is positioned above the trigger dial 14 on the left and right sides of the handle 22. The forward / reverse switching dial 15 is operated by the operator. By operating the forward / reverse switching dial 15, the rotation direction of the motor 6 is switched from one direction (forward or reverse) to the other. By switching the rotation direction of the motor 6, the rotation direction of the spindle 8 is switched.

[0174] Lamp unit 17 emits illumination light. Lamp unit 17 illuminates anvil 10 and its surrounding area with illumination light. Lamp unit 17 includes one or more light-emitting elements 53. Lamp unit 17 includes chip onboard light emitting diodes (COB LEDs).

[0175] In the first embodiment, the trigger stop 14, the switch board 16C, and the motor 6, located at the front end of the grip 22, approach each other in the front-rear direction. Accordingly, the grip 22, including the trigger stop 14, approaches the motor 6, one of the weight components of the angular fastening tool 1.

[0176] like Figure 4 As shown, in the angular fastening tool 1, a motor 6, a switch board 16C (operation panel 16), a trigger stop 14, and a controller 18 are arranged sequentially from front to rear. The front-rear distance L1 between the trigger stop 14 and the motor 6 is less than the front-rear distance L2 between the trigger stop 14 and the controller 18. Figure 5 As shown, the distance L3 in the front-to-back direction between the trigger stop 14 and the bearing 38R on the rear side is less than the length L10 in the front-to-back direction of the switch board 16C.

[0177] like Figure 5 As shown, the switch board 16C is positioned in front of the trigger stop 14, overlapping the motor 6 in the vertical direction. "Overlapping in the vertical direction" means that when two or more objects are viewed from above and below, there are portions of the objects overlapping each other. The overlap between the switch board 16C and the motor 6 in the vertical direction can also be described as at least a portion of the switch board 16C and at least a portion of the motor 6 being positioned at the same location in the front-rear direction. The front end portion 16F of the switch board 16C overlaps with the rear portion of the motor 6 in the vertical direction. The front end portion 16F of the switch board 16C is positioned at the same location as the rear portion of the motor 6 in the front-rear direction, but offset from the motor 6 in the vertical direction.

[0178] The front end portion 16F of the switch board 16C is positioned further forward than the bearing 38R on the rear side. The front end portion 16F of the switch board 16C is positioned further forward than the rear end portion of the motor 6. The switch board 16C, the stator 26, and the rotor 27 overlap vertically. That is, the front end portion 16F of the switch board 16C is positioned further forward than the rear surface of the stator core 28 and further forward than the rear surface of the rotor core portion 32.

[0179] The rear end portion 16R of the switch substrate 16C overlaps with the front portion of the trigger stop 14 in the vertical direction. The rear end portion 16R of the switch substrate 16C is positioned at the same location in the front-rear direction as the front portion of the trigger stop 14, but is offset from the trigger stop 14 in the vertical direction. The rear end portion 16R of the switch substrate 16C is located further rearward than the front surface of the trigger stop 14. The rear end portion 16R of the switch substrate 16C is located further rearward than the bearing 38R.

[0180] (Lamp unit)

[0181] Figure 10 This is a longitudinal sectional view of the lamp unit 17 according to the embodiment along the front-to-back direction. Figure 11 This is an exploded perspective view showing the structure of the lamp unit 17 according to the embodiment. Figure 12 This is a perspective view showing the front of the angular fastening tool 1 involved in the embodiment as viewed from below. Figure 13 This is an exploded perspective view showing the assembly of the lampshade into the housing according to the embodiment, viewed from below. Figure 14 This is a perspective view showing the housing involved in the embodiment as viewed from below. Figure 15 This is a bottom view of the housing after the lampshade has been removed. Figure 16 It is a three-dimensional representation of the lampshade.

[0182] The lamp unit 17 is disposed on the lower surface of the housing 4. The lamp unit 17 is disposed around the cylindrical portion 82. The lamp unit 17 is disposed around the anvil 10 via the cylindrical portion 82. In this embodiment, the lamp unit 17 has an annular shape that surrounds the anvil 10.

[0183] The lamp unit 17 includes a plurality of light-emitting elements 53. The light-emitting elements 53 are LED (light emitting diode) elements. The lamp unit 17 has a substrate 54 on which the plurality of light-emitting elements 53 are disposed.

[0184] The light-emitting element 53 is held in the housing 4. The light-emitting element 53 is held on the lower surface of the housing 4. A plurality of light-emitting elements 53 are disposed around the anvil 10. The plurality of light-emitting elements 53 are arranged along the circumference of the anvil 10. The plurality of light-emitting elements 53 are arranged in the rotational direction around the anvil 10. At least a portion of the light-emitting elements 53 are disposed around the shaft portion 10A of the anvil. The plurality of light-emitting elements 53 are arranged along the rotational direction of the anvil 10. The light-emitting elements 53 are mounted on the lower surface of the substrate 54.

[0185] Examples of substrates 54 include aluminum substrates, glass cloth-based epoxy resin substrates (FR-4 substrates), or composite substrate epoxy resin substrates (CEM-3 substrates). A light-emitting element 53 is mounted on the surface of substrate 54. The light-emitting element 53 and substrate 54 are connected by metal wires (not shown). The metal wires connect multiple light-emitting elements 53 to each other. Multiple light-emitting elements 53 are surrounded by a dike 55. A phosphor 56 is disposed within the area surrounded by the dike 55. The light-emitting element 53 is covered by the phosphor 56. A pair of electrodes (not shown) are disposed outside the dike on the surface (front surface) or back surface (rear surface) of substrate 54. One electrode of the pair is positive, and the other is negative. A wire 65 is connected to each electrode. Power output from battery 25 is supplied to the electrodes via wire 65. The power supplied to the electrodes is supplied to the light-emitting element 53 via substrate 54 and the metal wires. The light-emitting element 53 emits light based on the power supplied from battery 25. The lamp unit 17 and the controller 18 are connected by wire 65.

[0186] The substrate 54 has an annular shape surrounding the cylindrical portion 82. Multiple light-emitting elements 53 are arranged at intervals along the circumference of the substrate 54. The number of light-emitting elements 53 is not limited to a plurality. In this embodiment, 12 light-emitting elements 53 are arranged at equal intervals along the circumference of the cylindrical portion 82 (see reference). Figure 11 ).

[0187] The lamp unit 17 has an optical component 57.

[0188] Optical component 57 is connected to lamp unit 17. Optical component 57 is made of polycarbonate resin. In an embodiment, optical component 57 is made of polycarbonate resin containing a white diffusing material. Optical component 57 is milky white. Optical component 57 allows at least a portion of the light emitted from lamp unit 17 to pass through. The light transmittance of optical component 57 is, for example, 40% or more and 70% or less. Optical component 57 diffuses the light from the plurality of light emitters 53.

[0189] The optical component 57 is configured to cover the front sides of the plurality of light-emitting elements 53. At least a portion of the optical component 57 is positioned further forward than the lamp unit 17. The optical component 57 is continuous, spanning the plurality of light-emitting elements 53. The optical component 57 is formed in a ring shape surrounding the anvil 10, covering the plurality of light-emitting elements 53. The optical component 57 is annular. The optical component 57 has an outer cylindrical portion 57A, an inner cylindrical portion 57B, a light-transmitting portion 57C, and a protrusion 57D.

[0190] like Figure 10As shown, the outer cylinder portion 57A is positioned radially outward compared to the inner cylinder portion 57B. Radially, a plurality of light-emitting elements 53 are disposed between the outer cylinder portion 57A and the inner cylinder portion 57B. The inner cylinder portion 57B is positioned radially outward compared to the cylindrical portion 82 of the housing 4. The light-transmitting portion 57C is positioned downward compared to the plurality of light-emitting elements 53. The light-transmitting portion 57C is annular. The light-transmitting portion 57C is configured to connect the front end of the outer cylinder portion 57A and the front end of the inner cylinder portion 57B. The light-transmitting portion 57C faces the lower surface of the substrate 54. The light-transmitting portion 57C faces the light-emitting elements 53. Light emitted from the light-emitting elements 53 passes through the light-transmitting portion 57C and illuminates the lower part of the lamp unit 17. The lower surface of the light-transmitting portion 57C constitutes the light-emitting surface of the lamp unit 17.

[0191] The protrusion 57D is positioned further rearward than the light-transmitting portion 57C. The protrusion 57D is configured to protrude rearward from the rear of the outer cylinder portion 57A. The protrusion 57D is guided by a pair of guide protrusions 83 disposed on the housing 4 (see reference). Figure 14 , Figure 15 It functions as a positioning part of the lamp unit 17 in the rotation direction.

[0192] like Figure 10 As shown, the upper surface of the substrate 54 is positioned further downward than the upper end of the outer cylinder 57A and the upper end of the inner cylinder 57B. The substrate 54 and a plurality of light emitters 53 are disposed within a concave receiving space formed by the outer cylinder 57A, the inner cylinder 57B, and the light-transmitting portion 57C of the optical component 57. The upper surface of the receiving space is open. The receiving space is filled with molding resin 58. The plurality of light emitters 53, the substrate 54, the optical component 57, and a portion of the wire 65 are fixed together using the molding resin 58.

[0193] The housing 4 holds the lamp unit 17. The lamp unit 17, which includes a plurality of light-emitting elements 53, is held on the lower surface of the housing 4. The angular fastening tool 1 has a lamp cover 60, which is disposed on the lower surface of the housing 4, holds the light-emitting elements 53 and covers the wires 65.

[0194] (lampshade)

[0195] like Figure 12 as well as Figure 13 As shown, the lampshade 60 is separate from the motor housing 21. The lampshade 60 is also separate from the housing 4. The lampshade 60 engages with the motor housing 21. The lampshade 60 is mounted on the lower surface of the housing 4. The lampshade 60 holds the lamp unit 17 on the lower surface of the housing 4. The lamp unit 17 is held between the lower surface of the housing 4 and the lampshade 60. The lampshade 60 is made of, for example, resin.

[0196] The lampshade 60 includes a light-emitting element holding part 61 and a cover part 62. The lampshade 60 is a single component integrally formed by the light-emitting element holding part 61 and the cover part 62. The light-emitting element holding part 61 is separate from the motor housing part 21. The cover part 62 is separate from the motor housing part 21. The light-emitting element holding part 61 is separate from the housing 4. The cover part 62 is separate from the housing 4.

[0197] A light-emitting element holding portion 61 is disposed on the lower surface of the housing 4 and holds a plurality of light-emitting elements 53. The light-emitting element holding portion 61, the light-emitting elements 53, and the light-emitting element holding portion 61 are disposed on the mounting surface 81. The light-emitting element holding portion 61 is configured to surround the outer periphery of the optical component 57. The light-emitting element holding portion 61 is annular, surrounding the outer periphery of the optical component 57. The light-emitting element holding portion 61 has a peripheral wall portion 61A surrounding the optical component 57. The peripheral wall portion 61A is annular. The peripheral wall portion 61A extends vertically from the mounting surface 81 of the housing 4 to the lower surface of the optical component 57. The light-emitting element holding portion 61 has a locking portion 61B protruding radially inward from the lower end of the peripheral wall portion 61A. The locking portion 61B is provided throughout the entire inner periphery of the peripheral wall portion 61A. The locking portion 61B is located further downward than the lower surface of the optical component 57. The locking portion 61B contacts the lower surface of the optical component 57 from below. The locking portion 61B partially contacts the outer periphery of the lower surface of the optical component 57 in a snap-fit ​​manner. The locking portion 61B is located on the lower surface of the optical component 57 at a position further outward than the light-emitting element 53. The light-emitting element holding portion 61 supports the lower surface of the optical component 57 via the locking portion 61B. As described above, the lamp unit 17, including the optical component 57, the light-emitting element 53, and the substrate 54, is integrally formed using molding resin 58. Therefore, the light-emitting element holding portion 61 supports the entire lamp unit 17, including the light-emitting element 53, from below via the support of the lower surface of the optical component 57. The light-emitting element holding portion 61 exposes the portion directly below the light-emitting element 53 on the lower surface of the optical component 57, and also exposes the portion further inward than the light-emitting element 53.

[0198] The light-emitting element holding part 61 is fixed to the lower surface of the housing 4 by means of screws 60S. The screws 60S tighten the light-emitting element holding part 61 toward the lower surface of the housing 4. The lower surface of the optical component 57 is pressed toward the housing 4 by the locking part 61B, thereby holding the plurality of light-emitting elements 53 by the light-emitting element holding part 61. The light-emitting element holding part 61 presses the outer periphery of the lower surface of the optical component 57.

[0199] The light-emitting element holding part 61 is fixed to the lower surface of the housing 4 at multiple locations around the optical component 57 by screws 60S. The light-emitting element holding part 61 is fixed at the four corners of the lower surface of the housing 4 by four screws 60S. Screw holes 81A are formed on the flat mounting surface 81 in the lower surface of the housing 4. The screw holes 81A are positioned at the four corners surrounding the cylindrical part 82. That is, the four screw holes 81A are arranged at approximately 90-degree intervals in the rotational direction of the cylindrical part 82. The peripheral wall part 61A has a boss part 61H for mounting the screws 60S. The boss part 61H is positioned at the four corners surrounding the cylindrical part 82, corresponding to the screw holes 81A on the mounting surface 81. The boss part 61H has a through hole for the screws 60S to pass through. The screws 60S pass through the through hole of the boss part 61H from below and are fixed to the screw holes 81A. The light-emitting part 61 presses the optical component 57 upwards from the four corners around the optical component 57 toward the mounting surface 81 using the axial force of the screw 60S.

[0200] like Figure 10 As shown, the angular fastening tool 1 further includes a buffer member 59 disposed between the light-emitting element 53 and the lower surface of the housing 4. The buffer member 59 is disposed above the lamp unit 17. The buffer member 59 is an elastic body, for example, made of rubber material. The buffer member 59 protects the protective substrate 54 or the optical component 57 so that they do not come into contact with the housing 4, which is a metal vibrating body. The buffer member 59 covers at least a portion of the upper surface of the lamp unit 17. Due to the intervention of the buffer member 59, the lamp unit 17 is held between the mounting surface 81 and the light-emitting element holding portion 61 in a state separated from the mounting surface 81 of the housing 4.

[0201] The buffer member 59 is annular. The buffer member 59 overlaps with the lamp unit 17 around its entire circumference. The buffer member 59 is held in an elastically deformable state by the lamp unit 17 and the mounting surface 81. The buffer member 59 is flattened by the axial force of the screw 60S by the lamp unit 17. The buffer member 59 deforms in a manner corresponding to the shape of the upper surface side of the lamp unit 17, filling the gap between the lamp unit 17 and the mounting surface 81. The upper surface of the buffer member 59 contacts the mounting surface 81 and the cylindrical portion 82. The lower surface of the buffer member 59 contacts the lamp unit 17.

[0202] like Figure 12 as well as Figure 13 As shown, the cover 62 covers the wire 65. The wire 65 extends from the motor housing 21. The wire 65 is connected to multiple light-emitting elements 53. In other words, the wire 65 extends along the lower surface of the housing 4 from the lamp unit 17 toward the motor housing 21. The wire 65 connects the multiple light-emitting elements 53 to the controller 18. (Refer to wire 65) Figure 4The wire 65 extends from the controller 18 through the battery holder 23 and the interior of the motor housing 21, and from the lower opening 21D of the front surface of the motor housing 21 toward the lower surface of the housing 4. The wire 65 extends forward along the lower surface of the housing 4 and is connected to the substrate 54 of the lamp unit 17. Thus, the wire 65 is connected to a plurality of light-emitting elements 53 on the substrate 54 to supply power.

[0203] like Figure 15 As shown, the wire 65 includes: a first wire 65A extending from the motor housing portion 21; and a second wire 65B connected to the first wire 65A via a connector 66 and connected to a plurality of light-emitting elements 53. The first wire 65A extends forward from the interior of the motor housing portion 21 through the lower opening 21D of the motor housing portion 21 and extends to the lower surface of the housing 4. A connector 66A on one side is disposed on the first wire 65A. The second wire 65B extends rearward from the substrate 54 of the lamp unit 17 along the lower surface of the housing 4. A connector 66B on the other side is disposed on the second wire 65B. The first wire 65A and the second wire 65B are connected via the connector 66A of the first wire 65A and the connector 66B of the second wire 65B, thereby making the first wire 65A and the second wire 65B conductive. The connectors 66A and 66B can be installed and removed by plugging and unplugging. When connector 66B is separated from connector 66A, the sub-assembly consisting of lamp unit 17, second wire 65B and connector 66B can be separated from angular fastening tool 1.

[0204] like Figure 14 as well as Figure 15 As shown, the housing 4 has a groove 84 on its lower surface for arranging wires 65. The groove 84 is a recessed portion extending upward from the lower surface of the housing 4. The groove 84 is provided along the front-rear direction on the lower surface of the housing 4, extending from the rear end of the mounting surface 81 to the rear end of the housing 4. A first wire 65A and a second wire 65B are disposed in the groove 84. A connector 66A for the first wire 65A and a connector 66B for the second wire 65B are coupled in the groove 84.

[0205] The angular fastening tool 1 includes a grounding wire 67 that extends from the motor housing portion 21 and connects to the lower surface of the housing 4. The grounding wire 67 is connected to a grounding terminal 84B located on the lower surface of the housing 4. The grounding terminal 84B is disposed in a groove 84. The grounding wire 67 passes through the groove 84 from the lower opening 21D of the motor housing portion 21 and connects to the grounding terminal 84B. The conductor 65 and the grounding wire 67 are disposed in the same groove 84.

[0206] The groove 84 has a narrow passage 84A at its rear end. The passage 84A extends to the rear surface of the housing 4. An opening 21D (see reference) is located at the lower part of the motor housing 21. Figure 13 The extended conductor 65 and the grounding wire 67 pass through the passage section 84A. Using the passage section 84A, the starting point of the conductor 65 and the grounding wire 67 on the lower surface of the housing 4 can be positioned at the passage section 84A, and multiple wires can be bundled together.

[0207] Cover 62 covers the conductor 65 and the grounding wiring 67. Cover 62 covers the groove 84 where the conductor 65 is disposed. Cover 62 covers the grounding wiring 67 and the grounding terminal 84B. Cover 62 extends from the arrangement of the plurality of light-emitting elements 53 to the motor housing 21 on the lower surface of the housing 4. Specifically, cover 62 extends rearward from the rear end of the light-emitting element holding part 61. Cover 62 extends to the front surface of the motor housing 21. Cover 62 completely covers the groove 84.

[0208] like Figure 16 As shown, the cover portion 62 has a cover recess 63 that is recessed downward from the upper surface side, opposite to the groove portion 84. A wiring receiving space composed of the groove portion 84 and the cover recess 63 is formed between the lower surface of the housing 4 and the cover portion 62.

[0209] The cover portion 62 has a claw portion 62A that engages with the motor housing portion 21. The claw portion 62A is disposed at the rear end of the cover portion 62. The claw portion 62A protrudes rearward from the rear end of the cover portion 62. The claw portion 62A is inserted into the motor housing portion 21 (see reference 21). Figure 13 The cover 62 is inserted into the lower opening 21D of the motor housing 21 and engages with the motor housing 21. The rear end of the cover 62 is able to move in the front-to-back direction but cannot move downwards due to the engagement between the motor housing 21 and the claw 62A. The cover 62 is fixed to the housing 4 with the claw 62A engaged with the motor housing 21. The cover 62 completely covers the lower opening 21D of the motor housing 21.

[0210] like Figure 12 as well as Figure 13 As shown, the lamp cover 60, including the light-emitting element holding part 61 and the cover part 62, substantially covers the entire lower surface of the housing 4. During the assembly of the corner fastening tool 1, the assembler places the lamp unit 17 on the mounting surface 81 with the buffer part 59 in between, and after connecting the connectors 66A and 66B, assembles the lamp cover 60 into the housing 4. With the claw part 62A inserted into the lower opening 21D of the motor housing part 21 and engaged, the lamp cover 60 is fixed to the housing 4 by screws 60S at the four bosses 61H. When the lamp unit 17 is replaced for maintenance, etc., after removing the lamp cover 60 from the housing 4 in the reverse order, the lamp assembly consisting of the lamp unit 17, the second wire 65B, and the connector 66B can be removed from the corner fastening tool 1 simply by separating the connectors 66A and 66B.

[0211] (The structure of the control panel and the structure for holding the control panel)

[0212] Figure 17 This is a perspective view of the operation panel 16 in the split state of the outer casing 2 as viewed from below. Figure 18 This is a perspective view of the housing that holds the control panel 16. Figure 19 This is a side view of the first housing 2L, which shows the retaining structure of the operation panel 16. Figure 20 This is a side view of the second housing 2R, which shows the retaining structure of the operation panel 16. Figure 21 This is a horizontal cross-sectional view of the housing that holds the operation panel 16. Figure 22 This is a cross-sectional view along the left-right direction of the housing of the retaining structure of the operation panel 16.

[0213] The operation panel 16 involved in the embodiment is held in the housing 2. For example... Figure 17 as well as Figure 18 As shown, the housing 2 has a panel opening 21B for configuring the switch plate 16D, and a retaining groove 21C formed on the inner surface of the housing 2. The switch plate 16C is held in the housing 2 by inserting a portion of it into the retaining groove 21C.

[0214] Specifically, such as Figure 21 as well as Figure 22 As shown, the outer casing 2 is formed by the combination of a first outer casing 2L and a second outer casing 2R. The first outer casing 2L includes a panel opening 21B and a first portion PS1 of a retaining groove 21C. The second outer casing 2R includes a panel opening 21B and a second portion PS2 of a retaining groove 21C. The first outer casing 2L and the second outer casing 2R are a pair of half-divided outer casings. In one example, the first outer casing 2L is the left outer casing constituting the left side of the outer casing 2, and the second outer casing 2R is the right outer casing constituting the right side of the outer casing 2. The first outer casing 2L can be the right outer casing, and the second outer casing 2R can be the left outer casing. The first outer casing 2L and the second outer casing 2R have mating surfaces FS facing each other. The first outer casing 2L and the second outer casing 2R are connected by screws 2S (see reference 2S). Figure 1 The first outer casing 2L and the second outer casing 2R are joined together while the operation panel 16 is sandwiched between the left and right sides.

[0215] like Figure 19 as well as Figure 21As shown, the first portion PS1 of the panel opening 21B and the retaining groove 21C formed in the first housing 2L comprises: the left half of the panel opening 21B and the left half of the retaining groove 21C. The left half of the operation panel 16 is disposed in the first portion PS1. The left portions of the switch plate 16D and the operation button 16A are disposed in the first portion PS1 of the panel opening 21B. The left portion of the switch plate 16C is disposed in the first portion PS1 of the retaining groove 21C.

[0216] like Figure 20 as well as Figure 21 As shown, the second portion PS2 formed in the panel opening 21B and the retaining groove 21C of the second housing 2R consists of the right half of the panel opening 21B and the right half of the retaining groove 21C. The right half of the operation panel 16 is disposed in the second portion PS2. The right portions of the switch plate 16D and the operation button 16A are disposed in the second portion PS2 of the panel opening 21B. The right portion of the switch base plate 16C is disposed in the second portion PS2 of the retaining groove 21C.

[0217] like Figures 17 to 20 As shown, a retaining groove 21C is provided at least one of the mating surfaces FS of the first housing 2L and the second housing 2R, on one end (front end) and the other end (rear end) of the switch substrate 16C. In this embodiment, the retaining groove 21C is provided on both the front end and the rear end of the switch substrate 16C. Therefore, the retaining groove 21C supports both the front and rear ends of the switch substrate 16C. That is, the retaining groove 21C receives and holds the front edge of the switch substrate 16C, which extends in the left-right direction. The retaining groove 21C receives and holds the rear edge of the switch substrate 16C, which extends in the left-right direction. Accordingly, the retaining groove 21C prevents the switch substrate 16C from shifting in the vertical direction. The retaining groove 21C has the functions of preventing the operation panel 16 from detaching upwards and supporting the downward external force acting when the operation panel 16 is operated. The retaining groove 21C can be provided only on one end side (front end side) of the switch substrate 16C, or it can be provided only on the other end side (rear end side) of the switch substrate 16C.

[0218] like Figure 18 as well as Figure 21As shown, the retaining groove 21C extends along a first direction A orthogonal to the mating surface FS. In this embodiment, the first outer shell 2L and the second outer shell 2R are left and right halves of the outer shell, and the mating surface FS is a surface along both the front-back and up-down directions; therefore, the first direction A is the left-right direction. The first portion PS1 of the retaining groove 21C in the first outer shell 2L extends to the left from the mating surface FS of the first outer shell 2L. The second portion PS2 of the retaining groove 21C in the second outer shell 2R extends to the right from the mating surface FS of the second outer shell 2R.

[0219] During the assembly of the operation panel 16, firstly, the left half of the operation panel 16 is inserted into the first portion PS1 of the first housing 2L side from the mating surface FS toward the left. The left portion of the switch substrate 16C is inserted into the first portion PS1 of the retaining groove 21C on the first housing 2L side. The right half of the operation panel 16 protrudes to the right from the mating surface FS of the first housing 2L. Next, the mating surface FS of the second housing 2R is aligned and contacted with the mating surface FS of the first housing 2L from the right. At this time, the right portion of the switch substrate 16C is inserted into the second portion PS2 of the retaining groove 21C on the second housing 2R side. Accordingly, the left and right sides of the switch substrate 16C are respectively inserted into the first portion PS1 and the second portion PS2 of the retaining groove 21C.

[0220] During assembly, the operator can visually observe the mating surface FS (first part PS1 of retaining groove 21C) of the first housing 2L while inserting the switch substrate 16C into the retaining groove 21C. On the other hand, when inserting the switch substrate 16C into the right side, it is difficult to visually observe the position of the retaining groove 21C (second part PS2) of the second housing 2R. Therefore, in this embodiment, the retaining groove 21C (second part PS2) on the second housing 2R side has a structure that makes it easier to insert the switch substrate 16C into the retaining groove 21C (first part PS1) on the first housing 2L side.

[0221] Specifically, such as Figure 21 As shown, in the second direction B connecting one end of the switch substrate 16C to the other end in the cross-section along the mating surface FS, a first narrow slit CL1 is provided between the first portion PS1 of the retaining groove 21C and the switch substrate 16C. In this embodiment, the second direction B is a front-back direction. Furthermore, in the second direction B, a second narrow slit CL2, larger than the first narrow slit CL1, is provided between the second portion PS2 of the retaining groove 21C and the switch substrate 16C. By increasing the size of the second narrow slit CL2, the insertion of the switch substrate 16C can be simplified, as the relative position of the second portion PS2 to the switch substrate 16C is difficult to visually observe during assembly.

[0222] Furthermore, the positioning of the operation panel 16 relative to the housing 2 in both the front-back and left-right directions is achieved through the fitting of the switch plate 16D and the panel opening 21B. Both the first narrow slit CL1 and the second narrow slit CL2 are larger than the gap between the switch plate 16D and the panel opening 21B in the front-back direction. Therefore, during assembly, if the second portion PS2 of the panel opening 21B on the second housing 2R side is fitted into the right half of the switch plate 16D, the right side of the switch base plate 16C will naturally insert into the second portion PS2 of the retaining groove 21C.

[0223] In this embodiment, in addition to the retaining groove 21C, the housing 2 also has a structure that supports the downward external force when the switch SW (operation button 16A) of the operation panel 16 is pressed. That is, as Figure 18 , Figure 21 as well as Figure 22 As shown, at least one of the first housing 2L and the second housing 2R has a support surface 151 that supports the switch substrate 16C at a position adjacent to the switch substrate 16C on the opposite side (i.e., the lower side) of the panel opening 21B. In this embodiment, both the first housing 2L and the second housing 2R have support surfaces 151.

[0224] A support surface 151 is disposed at a position that contacts the edge portion of the switch substrate 16C in the first direction A. In this embodiment, since the first direction A is aligned with the left-right direction, the support surface 151 supports the edges of the switch substrate 16C in the left-right direction. That is, the support surface 151 of the first housing 2L supports the lower surface of the left edge portion of the switch substrate 16C extending in the front-rear direction. The support surface 151 of the second housing 2R supports the lower surface of the right edge portion of the switch substrate 16C extending in the front-rear direction.

[0225] Each support surface 151 extends along the edge portion (left edge portion, right edge portion) of the switch substrate 16C in the second direction B (front-rear direction). The end of each support surface 151 in the second direction B is connected to the retaining groove 21C. Therefore, the outer periphery of the switch substrate 16C is supported by the retaining groove 21C extending along the front and rear edges of the switch substrate 16C in the first direction A (left-right direction) and the support surfaces 151 extending along the left and right edges of the switch substrate 16C in the second direction B (front-rear direction).

[0226] Support surfaces 151 are respectively provided on the front and rear portions of the switch substrate 16C in the second direction B (front-rear direction). In the embodiment, since the engaging claws (first engaging claw 166 and second engaging claw 167, as described later) of the switch plate 16D are arranged at the center of the left and right edges of the switch substrate 16C in the front-rear direction, the support surfaces 151 support the front and rear portions excluding the positions of the engaging claws. In other words, the support surfaces 151 have a notch at the center in the second direction B for the engaging claws to pass through.

[0227] In addition, such as Figure 19 As shown, the retaining groove 21C has a protrusion 152 protruding toward the surface of the switch substrate 16C for mounting the switch SW. The protrusion 152 is formed on the upper side of the retaining groove 21C relative to the switch substrate 16C and protrudes downward. Thus, the protrusion 152 is opposite to the upper surface of the switch substrate 16C in the vertical direction. The protrusion 152 is provided in the first portion PS1 of the retaining groove 21C (i.e., the first housing 2L side). The protrusion 152 is provided on the inner side of the retaining groove 21C, i.e., the left end, in the first direction A (left-right direction). The protrusion 152 is provided on one end side (front) and the other end side (rear) of the switch substrate 16C in the second direction B (front-back direction).

[0228] The protrusion 152, through elastic deformation, makes tight contact with the surface of the switch substrate 16C. That is, when the protrusion 152 is not inserted into the retaining groove 21C, it protrudes downwards to a position further downwards than its designed position on the upper surface of the switch substrate 16C. Therefore, when the switch substrate 16C is inserted into the retaining groove 21C, the lower end of the protrusion 152 contacts the upper surface of the switch substrate 16C and undergoes elastic deformation. In other words, when the switch substrate 16C is inserted into the retaining groove 21C, the protrusion 152 is flattened by the switch substrate 16C, thereby making tight contact between the protrusion 152 and the upper surface of the switch substrate 16C. The switch substrate 16C is sandwiched between the protrusion 152 and the lower surface of the retaining groove 21C inside the retaining groove 21C. Accordingly, the protrusion 152 prevents the switch substrate 16C from experiencing vertical play (wobbling) within the retaining groove 21C.

[0229] Next, the structure of the operation panel 16 will be explained. Figure 23 This is an exploded perspective view of the operation panel 16 viewed from above. Figure 24 This is an exploded perspective view of the operation panel 16 viewed from below. Figure 25 This is a longitudinal sectional view through the engaging jaws of the operation panel 16.

[0230] like Figure 23 as well as Figure 24As shown, in this embodiment, the operation panel 16 includes: a switch substrate 16C, a switch SW (operation button 16A in this embodiment) mounted on the switch substrate 16C, and a switch plate 16D mounted on the switch substrate 16C. Additionally, the operation panel 16 also includes an indicator display 16B.

[0231] The switch substrate 16C is flat and has an upper surface 161 facing the panel opening 21B and a lower surface 162 facing the opposite side of the panel opening 21B. When viewed from above, the switch substrate 16C is generally rectangular. The four corners of the switch substrate 16C are chamfered at an angle. However, the top view shape of the switch substrate 16C is not limited to a rectangular shape and can be any shape.

[0232] A first defect 163 and a second defect 164 are formed on the outer periphery of the switch substrate 16C. The first defect 163 is provided on the left edge of the switch substrate 16C. As described later, the first defect 163 is used to accommodate a portion of the first engagement claw 166 of the switch plate 16D. The second defect 164 is provided on the right edge of the switch substrate 16C. As described later, the second defect 164 is used to accommodate a portion of the second engagement claw 167 of the switch plate 16D.

[0233] like Figure 17 As shown, the switch substrate 16C is held in the retaining groove 21C. The switch substrate 16C is longer than the switch plate 16D in the second direction B (front-back direction). The two ends of the switch substrate 16C in the second direction B (front-back direction) are respectively disposed in the retaining groove 21C. The switch substrate 16C is equipped with a switch SW (operation button 16A) and an indicator display 16B. The switch substrate 16C has a circuit pattern (not shown) for connecting the switch SW and the indicator display 16B to the controller 18. The switch plate 16D is mounted on the switch substrate 16C. The switch substrate 16C is equipped with the electrical circuit of the operation panel 16 and functions as a support structure for supporting the various parts of the operation panel 16. In addition, as Figure 17 As shown, a connection terminal portion 16E, etc., for connecting to wires for connection to the controller 18 is provided on the lower surface 162 of the switch board 16C. Figures 23 to 25 For convenience, illustrations have been omitted.

[0234] A switch SW (operation button 16A) and an indicator display 16B are mounted on the upper surface 161 of a switch substrate 16C. Although the switch SW is composed of the operation button 16A, it can also be a switch other than a button, such as a double-in-line switch, rocker switch, or rotary switch. The indicator display 16B is composed of LED elements. Four indicator displays 16B are provided on the upper surface 161 of the switch substrate 16C. The four indicator displays 16B are arranged in a straight line with a gap between them in the first direction A (left-right direction). The switch SW is located on the upper surface 161 of the switch substrate 16C at the other end (rear) in the second direction B (front-back direction). The four indicator displays 16B are located on the upper surface 161 of the switch substrate 16C at one end (front) in the second direction B (front-back direction). The position and number of the switch SW are not limited to the example shown in the figure and can be arbitrary. The position and number of the indicator displays 16B are not limited to the example shown in the figure and can be arbitrary.

[0235] A switch plate 16D is disposed on the upper surface 161 of a switch substrate 16C. The switch plate 16D is mounted on the switch substrate 16C. The switch plate 16D is fixed to the housing 2 by means of the switch substrate 16C.

[0236] The switch plate 16D has: a plate portion 165, a first engaging claw 166 and a second engaging claw 167, and a switch label 168.

[0237] The plate portion 165 is the main body of the switch plate 16D, which has a flat plate shape. The plate portion 165 is made of resin, for example. The plate portion 165 is disposed on the upper surface 161 of the switch substrate 16C. The plate portion 165 has a roughly rectangular shape when viewed from above. The four corners of the plate portion 165 are chamfered into rounded shapes. The top view shape of the plate portion 165 corresponds to the shape of the panel opening 21B. The plate portion 165 fits into the inside of the panel opening 21B.

[0238] The plate portion 165 has a through hole that extends through the plate portion 165 in the thickness direction (vertical direction). Specifically, the plate portion 165 has a switch hole 170 and an indicator hole 171.

[0239] A switch SW is disposed inside the switch hole 170. Although the switch hole 170 is circular, it can also be a shape other than a circle, such as a rectangle, and its shape can be arbitrary when viewed from above. The switch hole 170 ensures the installation space for the switch SW mounted on the switch substrate 16C and allows for switching operation from the outside (top).

[0240] The number of indicator holes 171 is the same as the number of indicator displays 16B (four in this embodiment). The four indicator holes 171 are separated from each other. One indicator display 16B is disposed inside each indicator hole 171. The indicator holes 171 ensure sufficient space for the indicator displays 16B mounted on the switch board 16C, allowing visual observation of the illumination status of the indicator displays 16B from the outside (above). The separation of the indicator holes 171 prevents light leakage from each indicator display 16B. Although each indicator hole 171 is rectangular, it can also be any shape other than a circle or other rectangles; the shape is arbitrary when viewed from above. Each indicator hole 171 can also be a shape corresponding to the information displayed on the indicator displays 16B (a number representing the operating mode, or a pictogram representing the function in operation).

[0241] like Figure 24 as well as Figure 25 As shown, the first engaging claw 166 and the second engaging claw 167 are positioned opposite each other on the outer periphery of the plate portion 165. In this embodiment, the first engaging claw 166 is located on the left edge of the plate portion 165, and the second engaging claw 167 is located on the right edge of the plate portion 165. The first engaging claw 166 and the second engaging claw 167 are opposite each other in a first direction A (left-right direction).

[0242] The first engaging claw 166 and the second engaging claw 167 engage with the switch substrate 16C respectively. The first engaging claw 166 and the second engaging claw 167 protrude downward from the plate portion 165. The first engaging claw 166 and the second engaging claw 167 pass from the upper surface side of the switch substrate 16C, through the side of the switch substrate 16C, and reach the lower part of the switch substrate 16C.

[0243] The first engaging claw 166 and the second engaging claw 167 contact the lower surface 162 of the switch substrate 16C from below. That is, the plate portion 165 is located on the upper side of the switch substrate 16C, and the ends of the first engaging claw 166 and the second engaging claw 167 are located on the lower side of the switch substrate 16C. The switch plate 16D is mounted on the switch substrate 16C by engaging the first engaging claw 166 and the second engaging claw 167 extending from the plate portion 165 with the lower surface 162 of the switch substrate 16C.

[0244] The first engaging claw 166 has an L-shape capable of positioning the switch substrate 16C between the plate portion 165 and the first engaging claw 166. Specifically, the first engaging claw 166 has a middle portion 166A extending downward from the lower surface of the plate portion 165, and an end portion 166B bending to the right from the lower end of the middle portion 166A toward the center of the plate portion 165. The middle portion 166A passes through the outer side (left side) of the left side surface of the switch substrate 16C. The middle portion 166A is positioned inside the first notch 163 on the outer periphery of the switch substrate 16C. Figure 24 As shown, the width WF1 of the middle portion 166A in the second direction B (front-back direction) is smaller than the width of the first defect portion 163 in the second direction B (front-back direction). The thickness of the middle portion 166A in the first direction A (left-right direction) is smaller than the depth of the first defect portion 163 in the first direction A (left-right direction), or both are the same. Therefore, the middle portion 166A is contained inside the first defect portion 163 and does not extend outside the first defect portion 163 in the first direction A (left-right direction). The end portion 166B overlaps with the switch substrate 16C in the vertical direction. The end portion 166B faces the lower surface 162 of the switch substrate 16C in the vertical direction. The first engaging claw 166 engages with the left edge of the switch substrate 16C at the end portion 166B.

[0245] The second engaging claw 167 has a snap-fit ​​shape capable of engaging and disengaging relative to the switch substrate 16C through elastic deformation. Specifically, the second engaging claw 167 has a middle portion 167A extending downward from the lower surface of the plate portion 165, and an end portion 167B bending to the left from the lower end of the middle portion 167A toward the center of the plate portion 165. The middle portion 167A passes through the outer side (right side) of the right side surface of the switch substrate 16C. The middle portion 167A is disposed inside the second defect portion 164 of the outer periphery of the switch substrate 16C. The width WF2 of the middle portion 167A in the second direction B (front-back direction) is less than the width of the second defect portion 164 in the second direction B (front-back direction). The thickness of the middle portion 167A in the first direction A (left-right direction) is less than the depth of the second defect portion 164 in the first direction A (left-right direction), or both are the same. Therefore, the middle portion 167A is contained inside the second defect portion 164 and does not extend to the outside of the second defect portion 164 in the first direction A (left-right direction). The end portion 167B overlaps with the switch substrate 16C in the vertical direction. The end portion 167B faces the lower surface 162 of the switch substrate 16C in the vertical direction. An inclined guide surface 167C is formed on the lower surface of the end portion 167B. The guide surface 167C contacts the right edge of the switch substrate 16C, so that the external force applied from the switch substrate 16C is directed towards the outside (right side) in the first direction A (left-right direction). Through the guide surface 167C, the middle portion 167A can easily elastically deform outward when the second engaging claw 167 engages with the switch substrate 16C. The second engaging claw 167 engages with the right edge of the switch substrate 16C at the end portion 167B.

[0246] Thus, in this embodiment, the second engaging claw 167 has a snap-fit ​​shape that allows for elastic deformation, while the first engaging claw 166 does not engage and engages with the switch substrate 16C without elastic deformation. When mounting the switch plate 16D onto the switch substrate 16C, initially, the left edge of the switch substrate 16C (first missing portion 163) is inserted into the inside of the first engaging claw 166, causing the left edge of the switch substrate 16C to engage with the first engaging claw 166. Next, the right edge of the switch substrate 16C (second missing portion 164) is pushed against the guide surface 167C of the second engaging claw 167. The second engaging claw 167 elastically deforms by expanding outward (to the right) along the guide surface 167C in the first direction A (left-right direction). Through the elastic deformation of the second engaging claw 167, the right edge of the switch substrate 16C moves inward from the end portion 167B of the second engaging claw 167. When the right edge of the switch substrate 16C passes through the end portion 167B, the pressing pressure on the second engaging claw is removed, and the second engaging claw 167 returns to its original position due to elasticity. As a result, the end portion 167B of the second engaging claw 167 engages with the lower surface of the right edge of the switch substrate 16C.

[0247] like Figure 24 As shown, in this embodiment, the width WF1 of the first engaging claw 166 is greater than the width WF2 of the second engaging claw 167. Furthermore, widths WF1 and WF2 are the widths in the second direction B (front-back direction).

[0248] like Figure 25 As shown, in this embodiment, the protrusion height HF1 of the first engaging claw 166 protruding from the plate portion 165 is less than the protrusion height HF2 of the second engaging claw 167 protruding from the plate portion 165. The protrusion heights HF1 and HF2 are the amount of protrusion from the lower surface of the plate portion 165 downwards (i.e., towards the switch substrate 16C), which can also be expressed as the length of the engaging claw.

[0249] The first engaging claw 166 and the second engaging claw 167 are integrally formed with the plate portion 165. Alternatively, the first engaging claw 166 and the second engaging claw 167 can be separately fixed relative to the plate portion 165. The switch plate 16D and the switch substrate 16C are fixed to each other, for example, using adhesive or tape (not shown). This improves the vibration resistance of the angular fastening tool 1 during use. In this case, the first engaging claw 166 and the second engaging claw 167 function as temporary fasteners for fixing with adhesive or tape. The first engaging claw 166 and the second engaging claw 167, by being respectively disposed inside the first defect portion 163 and the second defect portion 164, function as positioning elements determining the relative position of the switch plate 16D and the switch substrate 16C in the second direction B (front-back direction). The switch plate 16D and the switch substrate 16C can also be fixed to each other by engaging claws without using adhesive or tape.

[0250] The plate portion 165 has a central portion 173 that is recessed relative to the peripheral portion 172 on its upper surface. The central portion 173 is surrounded by the peripheral portion 172. The central portion 173 is flat and recessed downward (towards the switch substrate 16C) relative to the peripheral portion 172. In other words, the upper surface of the plate portion 165 has a rib-like peripheral portion 172 that protrudes upward relative to the central portion 173.

[0251] like Figure 23 as well as Figure 25 As shown, a switch label 168 is affixed to the surface (upper surface) of the plate portion 165. The switch label 168 is fixed to the plate portion 165, for example, using adhesive or tape (not shown). The switch label 168 is positioned at the center 173 of the plate portion 165. The switch label 168 covers the switch SW. The switch label 168, located on the upper surface of the center 173 of the plate portion 165, covers and seals the upper opening of the switch hole 170. Accordingly, the top of the switch SW is covered by the switch label 168.

[0252] Similarly, switch label 168 covers the indicator display 16B. The indicator display 16B does not extend from the indicator hole 171 but is retracted inside the indicator hole 171. Moreover, switch label 168 covers and blocks the upper opening of each indicator hole 171. Accordingly, the top of each indicator display 16B is covered by switch label 168.

[0253] like Figure 25As shown, the switch label 168 has a pressing portion 174 with a convex cross-sectional shape including a top surface 175 and corner portions 176. The pressing portion 174 is provided in the switch label 168 to cover the upper opening of the switch hole 170. The pressing portion 174 protrudes upward more than the planar portion of the switch label 168 that contacts the upper surface of the plate portion 165. The pressing portion 174 has a circular shape that corresponds to the switch hole 170 when viewed from above. The top view shape of the pressing portion 174 is not particularly limited and can be a rectangle or other polygonal shapes, or any other arbitrary shape.

[0254] The longitudinal cross-section of the pressing part 174 is trapezoidal. In this embodiment, the top surface 175, which has a circular top view shape, is a flat surface, and the periphery (circumference) of the top surface 175 becomes a corner 176. The top surface 175 is located directly above the switch SW. The top surface 175 is the pressing surface when the switch SW is operated. At least the pressing part 174 of the switch label 168 is elastically deformable. When the top surface 175 of the pressing part 174 is pressed, the top surface 175 sinks due to elastic deformation, and the switch SW (operation button 16A) is pressed down via the pressing part 174.

[0255] The top surface 175 is flat. The corner portion 176 forms the periphery of the top surface 175. The pressing portion 174 has a shape that protrudes upward from the outer periphery, which is further outward than the corner portion 176, and then bends at the corner portion 176 to connect with the flat top surface 175. Thus, the pressing portion 174 is not a dome-shaped convex shape with an arc, but is formed as a convex shape with an edge (corner portion 176) on the outer periphery of the top surface 175. When operating the operation panel 16 using the corner portion 176, the position of the switch SW can be effectively identified by touch, rather than by vision.

[0256] like Figure 25 As shown, the top surface 175 of the pressing part 174 is located below the peripheral edge 172 of the plate part 165. That is, in the embodiment, the protrusion height HP1 of the peripheral edge 172 protruding from the switch substrate 16C is greater than the protrusion height HP2 of the top surface 175 of the switch label 168 protruding from the switch substrate 16C. The top surface 175 of the switch label 168 is located between the upper end of the peripheral edge 172 and the upper surface of the central part 173 in the vertical direction. The top surface 175, which serves as the pressing surface, is positioned in a recessed position in the operation panel 16. Accordingly, for example, even when the angular fastening tool 1 is placed on the setting surface with the front tool holding part 51 facing upward, it is possible to prevent the pressing part 174 from contacting the setting surface. As a result, it is possible to avoid performing unintentional operations on the operation panel 16.

[0257] (Bearing retaining structure)

[0258] Figure 26This is a longitudinal sectional view showing the periphery of the bevel gear 35 of the angular fastening tool 1 involved in the embodiment. Figure 27 This is an exploded perspective view showing the rear surface of the housing 4 according to the embodiment. Figure 28 This is an exploded perspective view showing the front surface of the motor housing portion 21 according to the embodiment. Figure 29 This is an exploded perspective view showing the bevel gear 35, bearing 38F, and intermediate support member 91 involved in the embodiment. Figure 30 This is a longitudinal sectional view showing the intermediate support member 91 involved in the embodiment.

[0259] As described above, the angular fastening tool 1 includes a bearing 38F that holds the bevel gear 35 in a rotatable position. The bearing 38F contacts the rotor shaft portion 33, and the bevel gear 35 is held in a rotatable position by means of the rotor shaft portion 33. The bearing 38F is held in the housing 4. The bearing 38F is held in the rear part of the housing 4.

[0260] like Figure 26 As shown, the angular fastening tool 1 includes: an intermediate support member 91 having a front surface that contacts the bearing 38F; and a fixing member FM that contacts the rear surface of the intermediate support member 91. The fixing member FM, together with the housing 4, fixes the intermediate support member 91 simply by clamping. Therefore, the fixing member FM and the housing 4 hold the bearing 38F in place by clamping the bearing 38F and the intermediate support member 91 disposed on the rear surface of the bearing 38F.

[0261] The fixing member FM can be a separate component or integrally formed with the component as part of the components included in the angular fastening tool 1. In this embodiment, the fixing member FM is integrally formed with the motor housing portion 21. The fixing member FM is a support wall 21G integrally formed with the motor housing portion 21. Therefore, the bearing 38F is held by the motor housing portion 21 and the housing 4, which are connected in the front-rear direction.

[0262] Bearing 38F is a ball bearing having an inner ring 71, an outer ring 72, and balls 73. The rotor shaft portion 33 is fitted with the inner ring 71. The front end of the inner ring 71 faces the rear surface of the bevel gear 35. The rear end of the inner ring 71 faces the stepped portion of the rotor shaft portion 33.

[0263] like Figure 26 as well as Figure 27As shown, the housing 4 has a receiving recess 85 that is recessed from the rear of the housing 4 toward the front and accommodates the bearing 38F. The bearing 38F is disposed inside the receiving recess 85. The housing 4 has an outer cylinder portion 86, which has a housing flange portion 4F; and an inner cylinder portion 87, which has the receiving recess 85. The inner cylinder portion 87 is formed at a position further radially inward than the outer cylinder portion 86. The inner cylinder portion 87 is cylindrical in shape, and its inner diameter decreases in a stepped manner. That is, the inner cylinder portion 87 includes: a receiving recess 85 having an inner diameter D1; and a hole portion 88 having an inner diameter D2. The inner diameter D2 is smaller than the inner diameter D1. The receiving recess 85 is a recess that is recessed from the rear surface of the housing 4 toward the front. The bearing 38F is disposed inside the receiving recess 85. The bearing 38F contacts the inner circumferential surface of the receiving recess 85 and the front surface of the receiving recess 85 (the stepped portion between the receiving recess 85 and the bore 88), which corresponds to the bottom surface of the receiving recess 85. The bore 88 is a through hole along the rotation axis AX. The bevel gear 35 is disposed within the bore 88. The bevel gear 35 passes through the bore 88 and meshes with the driven gear 41A.

[0264] According to this configuration, the housing 4 has: a radial support surface 85A, which supports the radial load acting on the bearing 38F; and a front support surface 85B, which supports the forward thrust load acting on the bearing 38F. The radial support surface 85A is the inner circumferential surface of the receiving recess 85. The front support surface 85B is the front surface (bottom surface) of the receiving recess 85.

[0265] The radial support surface 85A is annular. The outer ring 72 of bearing 38F fits into the radial support surface 85A. A groove 85D is provided on the radial support surface 85A for arranging an O-ring 85C. The O-ring 85C contacts the inner surface of the groove 85D and the outer ring 72.

[0266] The front support surface 85B is annular. The front support surface 85B is opposite to the outer ring 72 of the bearing 38F in the front-rear direction. The front support surface 85B is in contact with the front end face of the outer ring 72.

[0267] like Figure 26 , Figure 28 as well as Figure 29 As shown, the support wall 21G, which serves as a fixed component FM, directly or indirectly supports the rear surface of the bearing 38F on the front surface of the motor housing portion 21. In this embodiment, the support wall 21G indirectly supports the rear surface of the bearing 38F via an intermediate support member 91. The support wall 21G forms part of the front surface of the motor housing portion 21.

[0268] Specifically, the front surface of the motor housing 21 includes: a housing flange 21F, which has screw insertion holes 21H at its four corners; an annular rib 21E, which protrudes forward from the housing flange 21F; and a support wall 21G. The annular rib 21E is disposed in the space between the outer cylinder 86 and the inner cylinder 87 of the housing 4. The inner cylinder 87 is disposed on the inner circumference of the annular rib 21E. A protrusion 21J protruding forward is provided at the lower part of the annular rib 21E. The protrusion 21J is inserted into the engagement hole 89 of the housing 4. The protrusion 21J and the engagement hole 89 are used to rotate and position the housing 4 relative to the motor housing 21 about the rotation axis AX.

[0269] Support wall 21G is disposed inside annular rib 21E. Support wall 21G extends radially inward from annular rib 21E. A central opening 92 for the rotor shaft portion 33 to pass through is formed in support wall 21G. Support wall 21G is annular. Support wall 21G faces the front support surface 85B of receiving recess 85 in the front-rear direction. Support wall 21G faces bearing 38F in the front-rear direction. Support wall 21G faces the rear end face of outer ring 72 of bearing 38F across intermediate support member 91.

[0270] A recess 93 for the intermediate support member 91 is formed on the front surface of the support wall 21G. The recess 93 is recessed rearward from the front surface. The recess 93 has a shape corresponding to the outer shape of the intermediate support member 91, and the intermediate support member 91 is disposed within the recess 93. The bottom surface of the rearward recess 93 is a rearward support surface 94 that contacts the rear surface of the intermediate support member 91. The rearward support surface 94 supports the rearward thrust load acting on the bearing 38F. Thus, the motor housing portion 21 has a rearward support surface 94 that supports the rearward thrust load acting on the bearing 38F. The rearward support surface 94 is the front surface of the support wall 21G and is the bottom surface of the recess 93 for the intermediate support member 91.

[0271] The intermediate support member 91 contacts the rear surface of the bearing 38F on its front surface and also contacts the stationary member FM on its rear surface. The front surface of the intermediate support member 91 contacts the rear end face of the outer ring 72 of the bearing 38F. The rear surface of the intermediate support member 91 contacts the rear support surface 94 of the front surface of the support wall 21G, which serves as the stationary member FM. The intermediate support member 91 is a flat plate with a constant thickness.

[0272] An intermediate support member 91 is disposed along the rear surface of the bearing 38F. The front surface of the intermediate support member 91 extends in a circumferential manner along the rear end face of the outer ring 72 of the bearing 38F. The intermediate support member 91 has a C-shape configured to surround the circumference of the rotor shaft portion 33 and include one end and the other end. That is, the intermediate support member 91 is non-annular, and a gap CL is formed between one end and the other end. In an embodiment, the gap CL is larger than the diameter of the rotor shaft portion 33 in a cross-section along the front surface of the intermediate support member 91. The inner circumference of the intermediate support member 91 is arc-shaped. The sides of the outer circumference of the intermediate support member 91 are straight, and the outer circumference of the intermediate support member 91 is quadrilateral except for the portion with gap CL.

[0273] As described above, the fixing member FM, together with the housing 4, secures the intermediate support member 91 solely by clamping. "Stabilized solely by clamping" means that, apart from clamping the intermediate support member 91 using the fixing member FM and the housing 4, there is no structure that secures the intermediate support member 91 using other components such as screws or rivets. No screw through-holes are provided in the intermediate support member 91.

[0274] Either the intermediate support member 91 or the fixed member FM causes the other to elastically deform. That is, either the intermediate support member 91 or the fixed member FM is assembled in a compressed state in the front-rear direction using the force used to clamp the intermediate support member 91. Accordingly, no front-rear clearance (wobbling) of the bearing 38F is generated between the housing 4 and the fixed member FM.

[0275] Either the intermediate support member 91 or the fixing member FM can be elastically deformable; however, in the embodiment, as... Figure 30 As shown, the fixing member FM undergoes elastic deformation. Specifically, the intermediate support member 91 has a higher hardness than the fixing member FM. The intermediate support member 91 is made of metal. The fixing member FM is made of resin. The fixing member FM clamps the intermediate support member 91 as it elastically deforms. The intermediate support member 91 is held in a state where its rear surface is slightly embedded in the fixing member FM. Furthermore, for convenience, in Figure 30 The deformation state of the fixed component FM is not shown in any of the other figures.

[0276] In this embodiment, the radial width W1 of the rear surface of the intermediate support member 91 is greater than the radial width W2 of the outer ring 72 (i.e., the thickness of the outer ring 72). Therefore, the intermediate support member 91 contacts the fixed member FM with a larger area than the outer ring 72, thereby enabling it to disperse the thrust load acting from the outer ring 72.

[0277] Here, the load acting on bearing 38F will be described. In the embodiment, bevel gear 35 and driven gear 41A are spiral bevel gears. A spiral bevel gear is a bevel gear whose tooth profile is bent into a spiral shape centered on the axis of rotation. Compared to straight bevel gears with straight tooth profiles that extend radially, spiral bevel gears have a larger contact area between the gears and more meshing teeth, thus exhibiting characteristics of high strength (high torque transmission), low noise, low vibration, and low wear.

[0278] The rotational transmission of the spiral bevel gear generates not only radial loads but also thrust loads. The thrust load depends on the gear ratio of the bevel gear 35 and the driven gear 41A, but sometimes the direction of the thrust load is reversed depending on the direction of rotation (forward or reverse). Therefore, it is possible for the bevel gear 35 to experience radial loads and thrust loads in various directions forward and backward along the rotation axis AX.

[0279] exist Figure 26 Since the bevel gear 35 is fixed to the rotor shaft 33, and the inner ring 71 of the bearing 38F is fixed to the rotor shaft 33, the thrust load acting on the bevel gear 35 is transmitted to the bearing 38F. The forward thrust load transmitted to the bearing 38F is supported by the front support surface 85B of the housing 4 via the outer ring 72. The rearward thrust load transmitted to the bearing 38F acts on the intermediate support member 91 via the outer ring 72, and is then supported by the rear support surface 94 of the support wall 21G, which serves as the fixed member FM, via the intermediate support member 91. When the thickness of the outer ring 72 is small, the contact area with the outer ring 72 will be close to line contact. Although there will be a relatively large local surface pressure, the intermediate support member 91 is sandwiched between the outer ring 72 and the rear support surface 94, thereby increasing the contact area with the rear support surface 94 and reducing the surface pressure acting on the rear support surface 94 formed on the resin motor housing 21.

[0280] In addition, the radial load acting on the bevel gear 35 acts on the bearing 38F via the rotor shaft 33 and is supported by the radial support surface 85A of the housing 4.

[0281] (Assembly workability of intermediate support components)

[0282] Figure 31 This is an exploded perspective view showing a sub-assembly of the rotor 27 according to the embodiment. (See attached image.) Figure 31As shown, when assembling with the diagonal fastening tool 1, the sub-assembly, in which the bearing 38F or intermediate support member 91 and other related components are pre-assembled onto the rotor 27, is assembled. The fan 12, intermediate support member 91, bearing 38F, and bevel gear 35 are arranged sequentially from the rear, thereby assembling these components onto the rotor shaft 33. In this embodiment, the intermediate support member 91 has a C-shape, allowing the rotor shaft 33 to pass through the gap CL, thus enabling the intermediate support member 91 to be assembled radially onto the rotor shaft 33. That is, even if the bearing 38F and bevel gear 35 are assembled first, the intermediate support member 91 can be assembled into the designated position from the rear. Therefore, even if the intermediate support member 91 is forgotten to be assembled, it can be addressed later, thus improving assembly workability.

[0283] (How to use)

[0284] The method of using the angular fastening tool 1 according to the embodiment will be described. For example, when performing a fastening operation on the work object, a sleeve serving as the front tool is installed in the front tool holder 51. When the operator operates the trigger switch 14, power is supplied from the battery 25 to start the motor 6, and light is emitted from the light-emitting element 53 of the lamp unit 17. The light from the lamp unit 17 is emitted downwards from around the anvil 10, so that even in narrow places with many obstacles, the light can reach the work area. The light emitted from the lamp unit 17 has high brightness, thus providing bright illumination to the work area.

[0285] The rotor 27 is rotated by the drive of the motor 6. When the rotor 27 rotates, its rotational force is transmitted to the spindle 8 via the reduction gear 7. The spindle 8 rotates at a lower speed than the rotor shaft 33. With the hammer protrusion 47B and the anvil protrusion 10B in contact, the anvil 10 rotates together with the hammer 47 and the spindle 8 when the spindle 8 rotates. The rotation of the anvil 10 causes the front-end tool to rotate, performing a tightening operation.

[0286] During the tightening operation, when a load exceeding a specified value is applied to the anvil 10 using the front-end tool, the rotation of the anvil 10 and the hammer 47 stops. With the hammer 47 stopped rotating, the hammer 47 moves upward as the spindle 8 rotates. When the hammer 47 moves upward and releases the contact between the hammer protrusion 47B and the anvil protrusion 10B, the upward-moving hammer 47 rotates downward simultaneously using the force of the coil spring 49. This downward movement of the hammer 47 causes the anvil 10 to be struck in the direction of rotation. Consequently, the anvil 10 and the front-end tool rotate around the rotation axis BX with a high torque. Thus, the bolt or nut is tightened with a high torque.

[0287] (Effect)

[0288] As described above, in this embodiment, the angular fastening tool 1 includes: a gripping portion 22 extending in the front-rear direction; a motor housing portion 21 disposed in front of the gripping portion 22; a motor 6 disposed inside the motor housing portion 21; a spindle 8 disposed in front of the motor 6, extending in a direction intersecting the front-rear direction, and rotating via the motor 6; a front tool holding portion 51 rotating via the spindle 8; a trigger stop 14 disposed in the gripping portion 22; and a switch board 16C disposed in front of the trigger stop 14 at a position overlapping the motor 6 in the vertical direction.

[0289] Based on the above configuration, the front-rear position of the switch board 16C is brought close to the motor 6 until the switch board 16C overlaps with the motor 6 in the vertical direction. Correspondingly, the trigger stop 14 can also be positioned near the rear of the switch board 16C. By bringing the switch board 16C, the motor 6, and the trigger stop 14 close together in the front-rear direction, the entire length of the angular fastening tool 1 can be suppressed, and the operability of the trigger stop 14 and the switch operation can be improved. As a result, the operability of the angular fastening tool 1 can be improved.

[0290] In the embodiment, the front end portion 16F of the switch substrate 16C overlaps with the rear portion of the motor 6 in the vertical direction, and the rear end portion 16R of the switch substrate 16C overlaps with the front portion of the trigger stop 14 in the vertical direction.

[0291] According to the above configuration, the switch board 16C, the motor 6, and the trigger stop 14 can be brought close together in the front-to-back direction. By concentrating these components near the gripping area, the entire length of the angular fastening tool 1 can be suppressed, and the operability of the trigger stop 14 and the switch operation can be effectively improved.

[0292] In this embodiment, the motor 6 includes a stator 26 and a rotor 27 rotatable relative to the stator 26. The angular fastening tool 1 includes bearings (38F, 38R) respectively disposed on the front and rear sides relative to the rotor 27 and supporting the rotor 27 for rotation. The distance L3 between the trigger stop 14 and the rear bearing 38R in the front-rear direction is less than the length L10 of the switch board 16C in the front-rear direction.

[0293] According to the above configuration, the trigger stop 14 can be brought close to the bearing on the rear side of the rotating support of the motor 6. The entire length of the angular fastening tool 1 can be suppressed, and by arranging the motor 6, which serves as a weight-bearing device, near the trigger stop 14, the center of gravity CG of the angular fastening tool 1 can be brought close to the trigger stop 14. Therefore, since the front tool holding part 51 can be easily moved (operated), the handleability of the angular fastening tool 1 is excellent.

[0294] In one embodiment, the angular fastening tool 1 includes a controller 18 that is connected to the switch board 16C via wiring and is located further rearward than the switch board 16C.

[0295] Based on the above configuration, by placing the controller 18 further rearward than the switch board 16C, it is not necessary to place the controller 18 below the switch board 16C. As a result, the space below the switch board 16C (between the motor 6 and the trigger switch 14) can be shortened.

[0296] In one embodiment, the angular fastening tool 1 includes a battery holding part 23 connected to the rear end of the gripping part 22 and holding the battery 25 in a removable manner. A controller 18 is disposed in the battery holding part 23.

[0297] Based on the above configuration, the battery holding section 23 for mounting the battery 25 ensures sufficient storage space for the controller 18. Even when the controller 18 is positioned further rearward than the switch board 16C, the possibility of the angular fastening tool 1 becoming excessively large in length can be prevented.

[0298] In the implementation, the distance L1 between the trigger stop 14 and the motor 6 in the front-to-back direction is less than the distance L2 between the trigger stop 14 and the controller 18 in the front-to-back direction.

[0299] Based on the above configuration, the distance from the trigger shift 14 to the controller 18 on the rear side can be shortened compared to the distance from the trigger shift 14 to the motor 6 on the front side. As a result, the overall length of the angular fastening tool 1 can be suppressed. With the battery 25, which is a weight component, mounted in the battery holding part 23, weight balance can be easily achieved on the front and rear sides of the trigger shift 14, thereby improving the handleability of the angular fastening tool 1.

[0300] In this embodiment, the motor 6 includes a stator 26 and a rotor 27 capable of rotating relative to the stator 26. The switch board 16C overlaps with both the stator 26 and the rotor 27 in the vertical direction.

[0301] Based on the above configuration, since the switch board 16C and the motor 6 can be brought closer together in the front-rear direction, the overall length of the angular fastening tool 1 can be suppressed. Since the center of gravity of the angular fastening tool 1 can be brought closer to the trigger stop 14, the handleability of the angular fastening tool 1 is good.

[0302] In this embodiment, the main shaft 8 extends downward along the rotation axis BX, which is orthogonal to the front-back direction.

[0303] Based on the above configuration, the lower end of the angular fastening tool 1, which is equipped with the spindle 8, can be positioned on the front of the working area for fastening.

[0304] In this embodiment, the angular fastening tool 1 includes a hammer 47 that moves relative to the spindle 8, and an anvil 10 that is struck directly or indirectly in the rotational direction by the hammer 47. A front tool holding part 51 is disposed at the lower end of the anvil 10.

[0305] Based on the above configuration, even the angular fastening tool 1, which is suitable for operation in confined spaces, can achieve a high fastening torque through the impact of the hammer 47. Even with the hammer 47 positioned on the front end of the angular fastening tool 1, the switch board 16C, motor 6, and trigger stop 14 can be brought closer together in the front-rear direction, resulting in good weight balance and improved handling.

[0306] In this embodiment, the angular fastening tool 1 includes: a gripping portion 22 extending in a front-rear direction; a motor housing portion 21 disposed in front of the gripping portion 22; a motor 6 disposed inside the motor housing portion 21; a spindle 8 disposed in front of the motor 6 and extending in a direction intersecting the front-rear direction and rotating via the motor 6; a front-end tool holding portion 51 rotating via the spindle 8; a trigger stop 14 disposed in the gripping portion 22; a switch board 16C provided with a switch; and a controller 18 connected to the motor 6, the switch board 16C, and the trigger stop 14 via wiring. The motor 6, the switch board 16C, the trigger stop 14, and the controller 18 are arranged sequentially from front to rear.

[0307] According to the above configuration, a controller 18 is disposed behind the motor 6, the switch board 16C, and the trigger stop 14. Since the switch board 16C is disposed near the surface of the housing, the controller 18 is not disposed near the switch board 16C between the motor 6 and the trigger stop 14. Consequently, the distance between the motor 6 and the trigger stop 14 can be shortened. Because the switch board 16C, the motor 6, and the trigger stop 14 can be brought closer together in the front-rear direction, the entire length of the angular fastening tool 1 can be suppressed, and the operability of the trigger stop 14 and the switch operation can be improved. As a result, the operability of the angular fastening tool 1 can be improved.

[0308] In this embodiment, the motor 6 includes a stator 26 and a rotor 27 capable of rotating relative to the stator 26. The angular fastening tool 1 includes bearings (38F, 38R) respectively disposed on the front and rear sides relative to the rotor 27 and supporting the rotor 27 so that it can rotate. The front end 16F of the switch board 16C is disposed further forward than the bearing 38R on the front side.

[0309] According to the above configuration, since the switch board 16C is close to the motor 6, the switch board 16C, the motor 6, and the trigger switch 14 can be brought closer together.

[0310] In one embodiment, the front end portion 16F of the switch board 16C is positioned further forward than the rear end portion of the motor 6.

[0311] According to the above configuration, the switch substrate 16C overlaps with the motor 6 in the vertical direction. This allows for a further reduction in the distance between the motor 6, the switch substrate 16C, and the trigger stop 14.

[0312] In this embodiment, the angular fastening tool 1 (electric fastener) includes a housing 2 and an operation panel 16. The operation panel 16 includes a switch substrate 16C, a switch SW mounted on the switch substrate 16C, and a switch plate 16D mounted on the switch substrate 16C in a manner that surrounds at least a portion of the switch SW. The housing 2 has a panel opening 21B for arranging the switch plate 16D, and a retaining groove 21C formed on the inner surface of the housing 2. The switch substrate 16C is held in the housing 2 by inserting a portion of it into the retaining groove 21C.

[0313] According to the above configuration, the switch base plate 16C, which is subjected to external force when the switch SW is operated, can be directly held in place by the housing 2. Here, when the switch plate 16D is held in place by the housing 2, the switch base plate 16C and the switch plate 16D are securely fixed with screws in a force-resistant manner, and then the switch plate 16D is fixed to the housing 2, resulting in a larger structure for the operation panel 16. In contrast, according to the above configuration, since the external force acting on the switch base plate 16C is supported by the housing 2, it is unnecessary to support the external force with the switch plate 16D, simplifying the fixing of the switch plate 16D. Therefore, the structure of the operation panel 16 can be simplified, resulting in a smaller size.

[0314] In this embodiment, the housing 2 is formed by combining a first housing 2L and a second housing 2R. The first housing 2L includes a panel opening 21B and a first portion PS1 of a retaining groove 21C. The second housing 2R includes a panel opening 21B and a second portion PS2 of the retaining groove 21C. The retaining groove 21C is disposed on at least one of the mating surfaces of the first housing 2L and the second housing 2R at one end and the other end of the switch substrate 16C, and extends along a first direction A orthogonal to the mating surface FS.

[0315] According to the above configuration, the switch substrate 16C is inserted along the first direction A into the holding groove 21C (first part PS1 or second part PS2) of either the first housing 2L or the second housing 2R. Then, the first housing 2L and the second housing 2R are joined at the mating surface FS, thereby holding the switch substrate 16C within the holding groove 21C. This facilitates the assembly of the switch substrate 16C and ensures that the switch substrate 16C is securely held.

[0316] In the embodiment, the retaining groove 21C is provided on both one end side and the other end side of the switch substrate 16C.

[0317] According to the above configuration, the two ends of the switch board 16C can be supported by the retaining groove 21C. The switch board 16C can be reliably held in the face of external forces applied when operating the switch SW. Switch operation is often performed while wearing work gloves, making it difficult to control the application of force. With the above configuration, even if a large external force is applied to the switch board 16C, it can be adequately held.

[0318] In one embodiment, in the second direction B that connects one end of the switch substrate 16C to the other end in a cross section along the mating surface FS, a first narrow slit CL1 is provided between the first portion PS1 of the retaining groove 21C and the switch substrate 16C. In the second direction B, a second narrow slit CL2, larger than the first narrow slit CL1, is provided between the second portion PS2 of the retaining groove 21C and the switch substrate 16C.

[0319] According to the above configuration, the smaller first narrow slit CL1 of the first portion PS1 of the retaining groove 21C suppresses the wobbling of the switch substrate 16C within the retaining groove 21C. The larger second narrow slit CL2 of the second portion PS2 of the retaining groove 21C facilitates the operation of fitting the switch substrate 16C, which is inserted into the retaining groove 21C (second portion PS2) of the second housing 2R, into the retaining groove 21C (first portion PS1) of the first housing 2L. In other words, because the second narrow slit CL2 is larger, when the second housing 2R and the first housing 2L are joined at the mating surface FS, the switch substrate 16C can be easily inserted into the retaining groove 21C of the second housing 2R.

[0320] In one embodiment, at least one of the first housing 2L and the second housing 2R has a support surface 151 that supports the switch substrate 16C at a position adjacent to the switch substrate 16C on the opposite side of the panel opening 21B. The support surface 151 is disposed at a position that contacts the edge portion of the switch substrate 16C in the first direction A.

[0321] According to the above configuration, when the switch SW is operated, the external force acting on the switch substrate 16C can be received by the support surface 151 in addition to the holding groove 21C.

[0322] In this embodiment, both the first housing 2L and the second housing 2R have a support surface 151.

[0323] Based on the above configuration, the support strength against external forces acting on the switch substrate 16C can be further improved through each support surface 151.

[0324] In one embodiment, the retaining groove 21C has a protrusion 152 protruding toward the surface of the switch substrate 16C on which the switch SW is mounted. The protrusion 152 comes into close contact with the surface of the switch substrate 16C with elastic deformation.

[0325] According to the above configuration, the protrusion 152 inside the retaining groove 21C is elastically deformed by the switch substrate 16C, thereby preventing the switch substrate 16C from wobbling in the thickness direction, and thus enabling the switch substrate 16C to reliably contact the support surface 151.

[0326] In one embodiment, the switch plate 16D has: a plate portion 165, and a first engagement claw 166 and a second engagement claw 167 disposed at opposing positions on the outer periphery of the plate portion 165 and respectively engaging with the switch substrate 16C.

[0327] Based on the above configuration, the switch board 16D can be easily mounted on the switch base plate 16C without the need for screws.

[0328] In one embodiment, the first engaging claw 166 has an L-shape capable of positioning the switch substrate 16C between the plate portion 165 and the first engaging claw 166. The second engaging claw 167 has a snap-fit ​​shape capable of engaging and disengaging with respect to the switch substrate 16C through elastic deformation.

[0329] Based on the above configuration, with the switch substrate 16C engaged with the first engaging claw 166, the second engaging claw 167 deforms while engaging with the switch substrate 16C, thereby enabling the switch plate 16D to be mounted on the switch substrate 16C. Compared to a case where the first engaging claw 166 and the second engaging claw 167 are in a snap-fit ​​shape, the structure for mounting the switch plate 16D to the switch substrate 16C is smaller and has higher strength.

[0330] In the implementation, the width WF1 of the first engaging claw 166 is greater than the width WF2 of the second engaging claw 167.

[0331] Based on the above configuration, the mechanical strength of the first engaging claw 166, which is a non-clamping engagement, can be improved. Since the width WF2 of the second engaging claw 167, which is a snap-fit ​​engagement, is reduced, it becomes easier to deform, thus reducing the force required to install the switch plate 16D.

[0332] In one embodiment, the protrusion height HF1 of the first engaging claw 166 protruding from the plate portion 165 is less than the protrusion height HF2 of the second engaging claw 167 protruding from the plate portion 165.

[0333] Based on the above configuration, by reducing the protrusion height HF1, the mechanical strength of the first engaging claw 166, which is a non-clamping engagement, can be improved. By increasing the protrusion height HF2, the second engaging claw 167, which is a snap-fit ​​engagement, is more easily deformed, thus reducing the force required to install the switch plate 16D.

[0334] In one embodiment, a first defect portion 163 is formed on the outer periphery of the switch substrate 16C, which is configured for a portion of the first engaging claw 166, and a second defect portion 164 is configured for a portion of the second engaging claw 167.

[0335] According to the above configuration, since the first engaging claw 166 and the second engaging claw 167 do not extend from the outer periphery of the switch substrate 16C or the amount of extension is reduced, the operation panel 16 can be miniaturized. Furthermore, since the first engaging claw 166 and the second engaging claw 167 are respectively disposed inside the first missing portion 163 and the second missing portion 164, the relative positions of the switch substrate 16C and the switch plate 16D can also be positioned. Therefore, the assembly workability of the operation panel 16 is improved.

[0336] In one embodiment, the switch plate 16D includes a plate portion 165 having a thickness greater than that of the switch SW, and a switch label 168 disposed on the surface of the plate portion 165 and covering the switch SW. The switch label 168 has a pressing portion 174 with a convex cross-sectional shape including a top surface 175 and a corner portion 176.

[0337] Based on the above configuration, the switch SW can be operated by pressing the switch label 168. Since the switch label 168 has a corner 176, its irregularities can be easily identified even when wearing work gloves. For example, compared to a smooth, dome-shaped switch label 168, the operability of the switch when using the corner fastening tool 1 (electric work machine) is improved.

[0338] In one embodiment, the plate portion 165 has a central portion 173 that is recessed relative to the peripheral portion 172. The switch label 168 is disposed in the central portion 173 of the plate portion 165. The protrusion height HP1 of the peripheral portion 172 protruding from the switch substrate 16C is greater than the protrusion height HP2 of the top surface 175 of the switch label 168 protruding from the switch substrate 16C.

[0339] Based on the above configuration, the switch label 168 is recessed further than the peripheral portion 172 of the plate portion 165. Therefore, when the angular fastening tool 1 (electric work machine) is placed with the operation panel 16 facing outwards, or when the angular fastening tool 1 (electric work machine) comes into contact with an obstacle during operation, unintentional switch operation can be suppressed.

[0340] [Second Implementation]

[0341] The second embodiment will be described. In the following description, the same reference numerals are used to refer to the same or equivalent components as those in the above embodiment, and the description of these components is simplified or omitted.

[0342] Figure 32 This is a perspective view showing the intermediate support member 91A according to the second embodiment. Figure 33 This is an exploded perspective view showing a sub-component of the motor 6 according to the second embodiment.

[0343] Although an example of a C-shaped intermediate support member 91 is shown in the first embodiment, the intermediate support member 91A involved in this second embodiment has an annular shape.

[0344] The intermediate support member 91A has an annular shape along the rear surface of the bearing 38F. The intermediate support member 91A has a circular inner circumference and an approximately quadrilateral outer circumference. The four corners of the outer circumference of the intermediate support member 91A are chamfered. The annular intermediate support member 91A contacts the rear surface of the bearing 38F throughout its entire circumference.

[0345] In the case of the annular intermediate support member 91A, unlike the C-shaped intermediate support member 91, it cannot be assembled radially relative to the rotor shaft 33. Therefore, these components are assembled axially from the front to the rotor shaft 33 in the order of fan 12, intermediate support member 91A, bearing 38F, and bevel gear 35.

[0346] [Third Implementation]

[0347] The third embodiment will be described. In the following description, the same reference numerals are used to refer to the same or equivalent components as those in the above embodiment, and the description of these components is simplified or omitted.

[0348] Figure 34 This is a cross-sectional view showing the intermediate support member 91B according to the third embodiment.

[0349] In the second embodiment, an intermediate support member 91A with a circular inner circumference and a quadrilateral outer circumference is shown, but the intermediate support member 91B involved in the third embodiment has an annular shape.

[0350] The intermediate support member 91B has an annular shape along the rear surface of the bearing 38F. The intermediate support member 91B has a circular inner circumference and a circular outer circumference. That is, the intermediate support member 91B is an annular washer. The annular intermediate support member 91B contacts the rear surface of the bearing 38F throughout its entire circumference. The intermediate support member 91B is a flat plate with a constant thickness.

[0351] During the assembly of the sub-assemblies, these components are assembled axially from the front onto the rotor shaft 33 in the order of fan 12, intermediate support component 91B, bearing 38F, and bevel gear 35.

[0352] [Fourth Implementation]

[0353] The fourth embodiment will be described. In the following description, the same reference numerals are used to refer to the same or equivalent components as those in the above embodiments, and the description of these components is simplified or omitted.

[0354] Figure 35 This is a cross-sectional view showing the intermediate support member 91C according to the fourth embodiment. Figure 36 This is a longitudinal sectional view showing the periphery of the intermediate support member 91C according to the fourth embodiment.

[0355] In the third embodiment, an intermediate support member 91B with a constant thickness and an annular shape is shown, but the intermediate support member 91C involved in the fourth embodiment has a stepped annular shape.

[0356] The intermediate support member 91C has an annular shape along the rear surface of the bearing 38F. The intermediate support member 91C has a circular inner circumference and a circular outer circumference. That is, the intermediate support member 91C is annular in shape. The annular intermediate support member 91C contacts the rear surface of the bearing 38F throughout its entire circumference.

[0357] The intermediate support member 91C has a stepped section offset in the thickness direction between its inner and outer circumferences. In other words, the intermediate support member 91C has an outer peripheral portion 101 and an inner peripheral portion 102 that is further inward than the outer peripheral portion 101, with the outer peripheral portion 101 offset forward from the inner peripheral portion 102. Furthermore, the thickness of the intermediate support member 91C is constant, and the thickness of the inner peripheral portion 102 is substantially the same as the thickness of the outer peripheral portion 101.

[0358] In the fourth embodiment, the fixing member FM (support wall 21G) of the motor housing 21 is provided with: an outer peripheral mounting portion 103 that contacts the rear surface of the outer peripheral portion 101 of the intermediate support member 91C; and an inner peripheral mounting portion 104 that contacts the rear surface of the inner peripheral portion 102 of the intermediate support member 91C. The outer peripheral mounting portion 103 and the inner peripheral mounting portion 104 are misaligned in the front-rear direction relative to the outer peripheral portion 101 and the inner peripheral portion 102, with the outer peripheral mounting portion 103 being further forward than the inner peripheral mounting portion 104.

[0359] In the fourth embodiment, corresponding to the outer periphery of the intermediate support member 91C and the outer periphery of the motor housing 21, the position of the peripheral wall of the receiving recess 85 constituting the housing 4 is also offset forward. As a result, the depth (depth from the rear surface forward) D3 of the receiving recess 85 of the housing 4 is less than the thickness D4 of the bearing 38F in the front-rear direction. The bearing 38F protrudes further rearward than the rear end of the receiving recess 85. The rear end of the bearing 38F is located further rearward than the outer periphery 101 of the intermediate support member 91C and contacts the front surface of the inner periphery 102 of the intermediate support member 91C.

[0360] Regarding this structure, the rearward thrust load acting on the bearing 38F is applied to the inner circumference 102 of the intermediate support member 91C. The intermediate support member 91C contacts the motor housing portion 21 on both the inner circumference 102 and the outer circumference 101. Therefore, the thrust load applied to the intermediate support member 91C is supported on both the inner circumference 102 and the outer circumference 101 by the inner circumference mounting portion 104 and the outer circumference mounting portion 103, respectively.

[0361] In the fourth embodiment, the outer peripheral mounting portion 103 is offset forward, thus allowing for a thickness on the front side to ensure that the support wall 21G of the motor housing portion 21 supports the thrust load. Correspondingly, the rear surface of the support wall 21G of the motor housing portion 21 can be formed into a shape that does not protrude rearward, thereby easily ensuring the installation space for the fan 12.

[0362] [Fifth Implementation]

[0363] The fifth embodiment will be described. In the following description, the same reference numerals are used to refer to the same or equivalent components as those in the above embodiments, and the description of these components is simplified or omitted.

[0364] Figure 37 This is a longitudinal sectional view showing the intermediate support member 91D and the fixing member FM according to the fifth embodiment.

[0365] In the first embodiment, an example of elastic deformation of the fixed member FM among the intermediate support member 91 and the fixed member FM is shown, but in this fifth embodiment, an example of elastic deformation of the intermediate support member 91D among the intermediate support member 91D and the fixed member FM is shown.

[0366] In the fifth embodiment, the intermediate support member 91D is made of resin. The fixing member FM is made of metal. The fixing member FM clamps the intermediate support member 91D while it elastically deforms. Additionally, in the fifth embodiment, the bearing 38F is a sliding bearing.

[0367] In the fifth embodiment, the intermediate support member 91D and the bearing 38F are held in place by a metal housing 4 and a metal fixing member FM clamped together in the front-rear direction. The fixing member FM, together with the housing 4, is secured by clamping only the intermediate support member 91D.

[0368] The intermediate support member 91D is elastically deformed by being clamped by the fixed member FM and the bearing 38F. The intermediate support member 91D deforms in such a way that the rear surface of the bearing 38F bites into the front surface of the intermediate support member 91D. Accordingly, no gap (wobbling) is generated between the fixed member FM and the housing 4 and between the front and rear of the bearing 38F.

[0369] [Sixth Implementation Method]

[0370] The sixth embodiment will be described. In the following description, the same reference numerals are used to refer to the same or equivalent components as those in the above embodiments, and the description of these components is simplified or omitted.

[0371] Figure 38 This is a longitudinal sectional view showing the front part of the angular fastening tool 1A according to the sixth embodiment.

[0372] In the first embodiment, an example is shown where the bevel gear 35 is a pinion fixed to the rotor shaft portion 33. However, in this sixth embodiment, the bevel gear 135 and the pinion fixed to the rotor shaft portion 33 are separately provided, and the bevel gear 135 is provided on a shaft different from the rotor shaft portion 33.

[0373] The angular fastening tool 1A according to the sixth embodiment includes a bevel gear 135, which rotates indirectly via a rotor 27, and has a shaft 111 extending in the front-rear direction. The angular fastening tool 1A also includes a spur gear 112, which is a pinion that rotates directly via the rotor 27. The bevel gear 135 rotates about the shaft 111 due to the rotational force of the spur gear 112.

[0374] The spur gear 112 is fixed to the rotor shaft 33. The spur gear 112 is fixed by being pressed into the front end of the rotor shaft 33. The spur gear 112 rotates together with the rotor 27 (rotor shaft 33). The rotor shaft 33 is held in place by the rotor bearing 113F to enable rotation. The spur gear 112 meshes with the driven gear 114.

[0375] Driven gear 114 is a spur gear. Driven gear 114 is fixed to the rear end of shaft 111. Driven gear 114 is fixed by being pressed into the rear end of shaft 111. Driven gear 114 rotates together with shaft 111 and bevel gear 135. Driven gear 114 rotates by reducing the rotation of spur gear 112. Driven gear 114 constitutes the first stage of the reduction gear mechanism 7.

[0376] Shaft 111 extends in the front-to-back direction. Shaft 111 is parallel to the rotation axis AX of motor 6. Shaft 111 is housed in housing 4. Shaft 111 is positioned radially offset relative to the rotation axis AX.

[0377] The bevel gear 135 is positioned further forward than the spur gear 112 and the driven gear 114. The bevel gear 135 is integrally formed on the front end of the shaft 111, or is separately fixed to the front end of the shaft 111. The bevel gear 135 is housed in the housing 4. The bevel gear 135 rotates about the central axis of the shaft 111. The bevel gear 135 meshes with a first intermediate gear 115A disposed on the intermediate shaft 115C.

[0378] Intermediate shaft 115C extends in a direction intersecting the rotation axis AX and shaft 111. Intermediate shaft 115C extends vertically in a direction orthogonal to the rotation axis AX and shaft 111, and is rotatable about a central axis in the vertical direction. Both ends of intermediate shaft 115C are supported by intermediate bearings 116, allowing them to rotate. Intermediate bearings 116 are held in housing 4. First intermediate gear 115A and second intermediate gear 115B are fixed to intermediate shaft 115C. Intermediate shaft 115C, first intermediate gear 115A, and intermediate shaft 115C rotate together. First intermediate gear 115A meshes with bevel gear 135. First intermediate gear 115A is a bevel gear. First intermediate gear 115A reduces the rotational speed of bevel gear 135. Bevel gear 135 and first intermediate gear 115A constitute the second stage reduction section of reduction mechanism 7. Second intermediate gear 115B is a spur gear. Second intermediate gear 115B meshes with main shaft gear 8C of main shaft 8. The main shaft gear 8C rotates by reducing the rotational speed of the second intermediate gear 115B. The second intermediate gear 115B and the main shaft gear 8C constitute the third stage of the reduction mechanism 7.

[0379] The bearing 139 is supported on the housing 4 and holds the bevel gear 135 in a rotatable position. The bearing 139 contacts the shaft 111 and supports the shaft 111 in a rotatable position. The bearing 139 holds the bevel gear 135 in a rotatable position by means of the shaft 111.

[0380] Bearing 139 is housed in receiving recess 118 of housing 4. Receiving recess 118 has a radial support surface 118A and a front support surface 118B. Bearing 139 is a ball bearing. Additionally, in Figure 38 In the example, there are two sets of bearings 139 arranged axially.

[0381] The intermediate support member 91E has a front surface that contacts the bearing 139. The intermediate support member 91E can be C-shaped or annular. In the sixth embodiment, the intermediate support member 91E is housed in the housing 4. The intermediate support member 91E covers a portion of the rear surface opening of the receiving recess 118. The intermediate support member 91E contacts the rear end face of the outer ring of the bearing 139 disposed on the rear side of the receiving recess 118.

[0382] In the sixth embodiment, the fixing member FM is separately provided relative to the motor housing portion 21 and the housing 4. In the sixth embodiment, the fixing member FM is made of metal and is a gearbox that houses the spur gear 112 and the driven gear 114. The fixing member FM is arranged between the housing 4 and the motor housing portion 21 in a front-rear direction, spanning across the housing 4 and the motor housing portion 21.

[0383] The fixed component FM includes: a first receiving chamber 121 recessed from the front surface toward the rear; and a second receiving chamber 122 recessed from the rear surface toward the front. The first receiving chamber 121 houses the spur gear 112 and the driven gear 114. The second receiving chamber 122 houses the rotor bearing 113F. The second receiving chamber 122 is continuous with the first receiving chamber 121 in the longitudinal direction. The front end of the rotor shaft portion 33 passes through the second receiving chamber 122 and is disposed within the first receiving chamber 121.

[0384] The housing 4 has a front receiving portion 119 that receives the front portion of the fixing member FM. The front receiving portion 119 is a recessed portion extending from the rear surface of the housing 4 toward the front. A receiving recess 118 for the bearing 139 is formed on the wall surface of the front receiving portion 119 on the front side corresponding to the bottom surface. The front receiving portion 119 and the receiving recess 118 are continuous. Therefore, the intermediate support member 91E is disposed on the wall surface of the front receiving portion 119 on the front side corresponding to the bottom surface. The front portion of the fixing member FM is embedded in the front receiving portion 119. Accordingly, the fixing member FM contacts the rear surface of the intermediate support member 91E on its front surface. The portion of the fixing member FM that defines the peripheral wall of the first receiving chamber 121 contacts the rear surface of the intermediate support member 91E.

[0385] The motor housing 21 has a rear receiving portion 120 that accommodates the rear portion of the fixing member FM. The rear receiving portion 120 is a recessed portion extending rearward from the front surface of the motor housing 21. The rear portion of the fixing member FM is inserted into the rear receiving portion 120. Although not shown, the motor housing 21 and the housing 4 are connected in the front-rear direction in the same manner as in the first embodiment, and are fastened by screws 70 facing the front-rear direction. The motor housing 21 and the housing 4 are fastened in a direction that brings them closer together in the front-rear direction by the axial force of the screws 70. Accordingly, the bearing 139, the intermediate support member 91E, and the fixing member FM are held by the motor housing 21 and the housing 4, and are held by the axial force of the screws 70. As a result, the fixing member FM and the housing 4 are fixed together by simply clamping the intermediate support member 91E. The intermediate support member 91E is only disposed in the front receiving part 119, and together with the bearing 139, it is clamped between the front surface of the fixing member FM and the front support surface 118B of the housing 4, thereby being fixed.

[0386] [Other Implementation Methods]

[0387] In the above embodiment, the plurality of light emitters 53 may not be arranged circumferentially along the anvil 10. For example, the plurality of light emitters 53 may be arranged radially in the radial direction of the anvil 10. The optical component 57 may not be a ring surrounding the anvil 10, but may have a shape corresponding to the arrangement of the plurality of light emitters 53. The optical component 57 may be, for example, arc-shaped, quadrilateral, radial, etc. The optical component 57 may be provided individually relative to each light emitter 53. The plurality of light emitters 53 need only be held in the housing 4, or may be disposed at the rear of the lower surface of the housing 4, or at the lower part of the side, etc. For example, the light emitter 53 may emit light obliquely downward from the rear of the lower surface of the housing 4 toward the lower part of the anvil 10. The light emitter 53 may not be provided in multiples, or only one may be provided.

[0388] In the above embodiment, the angular fastening tool 1 is an impact wrench. The angular fastening tool 1 can also be an impact screwdriver. When the angular fastening tool 1 is an impact screwdriver, the front tool holding part 51 includes a bit hole provided at the lower end of the anvil shaft part 10A. The bit hole is configured to extend rearward from the front end of the anvil shaft part 10A. The screwdriver bit, as the front tool, is held in a state where it is inserted into the bit hole. In this case, the front tool holding part 51 may include a tool holding mechanism that allows for the removable holding of the screwdriver bit inserted into the bit hole.

[0389] Alternatively, the angular fastening tool 1 can be an angular fastening tool other than an impact tool. In other words, the angular fastening tool 1 may not include: the striking mechanism 9 including the hammer 47, and the anvil 10. In this case, the front tool holding part 51 can be provided at the front end of the spindle 8 and rotate integrally with the spindle 8, or it can be provided separately from the spindle 8 and rotated via the spindle 8 through a power transmission mechanism. Examples of angular fastening tools 1 other than impact tools include: electric ratchet wrenches, electric angular screwdrivers, electric angular drills, etc.

[0390] In the above embodiment, the support wall 21G indirectly supports the rear surface of the bearing 38F by means of the intermediate support member 91. However, the intermediate support member 91 may not be provided, and the support wall 21G may directly support the rear surface of the bearing 38F.

[0391] In the above embodiments, the power source for the angular fastening tool 1 may not be the battery 25, but may be a commercial power source (AC power).

[0392] [Seventh Implementation Method]

[0393] The seventh embodiment will be described. In the following description, the same reference numerals are used to refer to the same or equivalent components as those in the above embodiments, and the description of these components is simplified or omitted.

[0394] Figure 39 This is a perspective view showing the front of the angular fastening tool 1B according to the seventh embodiment, viewed from below. Figure 40 This is a bottom view showing the front of the angular fastening tool 1B according to the seventh embodiment.

[0395] In the first embodiment, an example was shown where the lamp unit 17 had an annular shape that surrounded the anvil 10. However, the lamp unit 201 involved in this seventh embodiment is non-annular and is located further away from the anvil 10 than in the first embodiment.

[0396] The lamp unit 201 is disposed on the lower surface of the housing 4. The lamp unit 201 is disposed around the cylindrical portion 82. The lamp unit 201 is disposed around the anvil 10 by means of the cylindrical portion 82. In the seventh embodiment, the lamp unit 201 does not surround the anvil 10, and is configured to be partially present behind the anvil 10.

[0397] The lamp unit 201 includes a plurality of light-emitting elements 53. The light-emitting elements 53 are held in the housing 4. The light-emitting elements 53 are held on the lower surface of the housing 4. A plurality of light-emitting elements 53 are arranged around the anvil 10.

[0398] In the seventh embodiment, a plurality of light-emitting elements 53 are arranged radially along the anvil 10. The plurality of light-emitting elements 53 are disposed behind the anvil 10 in the radial direction of the anvil 10. The plurality of light-emitting elements 53 are arranged in a straight line behind the anvil 10. Alternatively, the plurality of light-emitting elements 53 may be arranged in a straight line along the rotation direction (circumferential direction) of the anvil 10 behind it, or along the left-right direction. The arrangement of the plurality of light-emitting elements 53 is not limited to a linear arrangement; they may also be arranged in a planar pattern (array) with a predetermined pattern of longitudinal and transverse directions.

[0399] Figure 41 This is an exploded perspective view showing the assembly of the lampshade 204 to the housing 4 according to the seventh embodiment, viewed from below. Figure 42 This is a longitudinal sectional view along the front-rear direction of the lamp unit 201 according to the seventh embodiment.

[0400] The lamp unit 201 includes a substrate 202 on which a plurality of light-emitting elements 53 are disposed, and an optical component 203. The substrate 202 is configured in a straight line (rectangular) along the front-back direction, corresponding to the linear arrangement of the plurality of light-emitting elements 53. A plurality of light-emitting elements 53 are arranged at intervals along the front-back direction on the lower surface of the substrate 202. In this embodiment, two light-emitting elements 53 are disposed. The number of light-emitting elements 53 can be one or more. By providing a plurality of light-emitting elements 53, sufficient light intensity and illumination range can be ensured.

[0401] The optical component 203 is configured to cover the front sides of a plurality of light-emitting elements 53. At least a portion of the optical component 203 is positioned further forward than the lamp unit 201. The optical component 203 is continuous, spanning the plurality of light-emitting elements 53. The light-transmitting portion 203B of the optical component 203 faces the plurality of light-emitting elements 53. The light-transmitting portion 203B concentrates and covers two light-emitting elements 53.

[0402] A portion of the optical component 203 is covered from below by the lampshade 204. The portion of the optical component 203 that covers the plurality of light-emitting elements 53 is exposed and not covered by the lampshade 204. That is, the light-transmitting portion 203B covering the plurality of light-emitting elements 53 is exposed downwards through the opening 205A of the lampshade 204. Light from the plurality of light-emitting elements 53 passes through the light-transmitting portion 203B and through the opening 205A of the lampshade 204, exiting downwards towards the housing 4.

[0403] like Figure 41 as well as Figure 42 As shown, the optical component 203 is formed as a box shape that covers a plurality of light emitters 53 and a substrate 202 and leaves the upper surface side open. The optical component 203 has a sidewall portion 203A, a light-transmitting portion 203B, and a protrusion 203C.

[0404] The sidewall portion 203A is cylindrical. A substrate 202, housing multiple light emitters 53, is disposed inside the sidewall portion 203A. The sidewall portion 203A surrounds the multiple light emitters 53 and the entire circumference (front-to-back and left-to-right directions) of the substrate 202. The upper surface of the sidewall portion 203A is an open opening. A light-transmitting portion 203B blocks the lower surface of the sidewall portion 203A. The light-transmitting portion 203B constitutes the lower surface of the optical component 203. The sidewall portion 203A and the light-transmitting portion 203B constitute an approximately cuboid-shaped optical component 203 with an open upper surface. The light-transmitting portion 203B is rectangular (rounded corner rectangle) when viewed from below. The light-transmitting portion 203B faces the lower surface of the substrate 202. The light-transmitting portion 203B faces the light emitters 53 in the vertical direction. Light emitted from the light emitters 53 passes through the light-transmitting portion 203B. The lower surface of the light-transmitting portion 203B constitutes the light-emitting surface of the lamp unit 201. The light-transmitting portion 203B protrudes further downward than the lower end of the side wall portion 203A. When viewed from below, the light-transmitting portion 203B is a rectangle that is slightly smaller than the side wall portion 203A. Consequently, a stepped shoulder 203D (see reference) is formed at the boundary between the lower end of the side wall portion 203A and the outer periphery of the light-transmitting portion 203B. Figure 42 ).

[0405] The protrusion 203C is configured to protrude laterally from the sidewall portion 203A. In the seventh embodiment, the protrusion 203C protrudes to the left from the left side of the sidewall portion 203A. The protrusion 203C functions as a positioning part of the lamp unit 201 relative to the housing 4 by being disposed inside the guide groove 214A of the housing 4.

[0406] like Figure 42 As shown, the upper surface of the substrate 202 is positioned further downward than the upper end of the sidewall portion 203A. The substrate 202 and a plurality of light-emitting elements 53 are disposed within a concave receiving space formed by the sidewall portion 203A and the light-transmitting portion 203B of the optical component 203. The receiving space is filled with molding resin 58. The plurality of light-emitting elements 53, the substrate 202, the optical component 203, and a portion of the conductive wire 65 are fixed together using the molding resin 58. Alternatively, the molding resin 58 may not be provided.

[0407] The housing 4 holds the lamp unit 201. The lamp unit 201, which includes a plurality of light-emitting elements 53, is held on the lower surface of the housing 4. The angular fastening tool 1B includes a lamp cover 204 disposed on the lower surface of the housing 4 to hold the light-emitting elements 53 and to cover the wires 65.

[0408] The lamp cover 204 is separate from the motor housing 21. The lamp cover 204 is separate from the housing 4. The lamp cover 204 engages with the motor housing 21. The lamp cover 204 is mounted on the lower surface of the housing 4. The lamp cover 204 holds the lamp unit 201 on the lower surface of the housing 4. The lamp unit 201 is held between the lower surface of the housing 4 and the lamp cover 204.

[0409] The lampshade 204 is a single component formed by integrally creating the light-emitting body holding part 205 and the cover part 206.

[0410] A light-emitting element holding portion 205 is disposed on the lower surface of the housing 4 and holds a plurality of light-emitting elements 53. The light-emitting element holding portion 205 is disposed on the lower surface of the housing 4, adjacent to the cylindrical portion 82 on the rear side. The light-emitting element holding portion 205 covers the periphery of the mounting position of the lamp unit 201. An opening 205A is formed in the light-emitting element holding portion 205, exposing the light-transmitting portion 203B of the optical component 203. The opening 205A extends from the lower surface to the upper surface of the light-emitting element holding portion 205. The light-transmitting portion 203B is disposed inside the opening 205A. The opening 205A is dimensionally tolerant and formed to have a substantially the same top view shape as the light-transmitting portion 203B. The periphery of the opening 205A contacts the shoulder portion 203D of the optical component 203. Figure 42 As shown, the light-emitting element holding part 205 supports the shoulder 203D (lower end of the sidewall part 203A) of the optical component 203 from below at the periphery of the opening 205A. Accordingly, the light-emitting element holding part 205 supports the entire lamp unit 201 including the light-emitting element 53 from below by supporting the shoulder 203D of the optical component 203.

[0411] like Figure 40 as well as Figure 41 As shown, the light-emitting element holding part 205 is fixed to the lower surface of the housing 4 by screws 60S. The screws 60S tighten the light-emitting element holding part 205 toward the lower surface of the housing 4. The light-emitting element holding part 205 presses the lower surface (shoulder 203D) of the optical component 203 toward the housing 4 through the periphery of the opening 205A, thereby holding the plurality of light-emitting elements 53. The light-emitting element holding part 205 presses the outer periphery of the lower surface of the optical component 203. Alternatively, the light-emitting element holding part 205 may not press the optical component 203, but simply support it from below.

[0412] like Figure 41As shown, the light-emitting element holding portion 205 is fixed to multiple locations around the optical component 203 by screws 60S. Specifically, the light-emitting element holding portion 205 is fixed to two locations on both sides of the lamp unit 201 in the left-right direction by two screws 60S. Screw holes 211A are formed on the flat mounting surface 211 in the lower surface of the housing 4. In the seventh embodiment, the mounting surface 211 is the bottom surface of the groove portion 212. The two screw holes 211A are located on the left and right sides of the light source mounting portion 213 where the lamp unit 201 is mounted. An insertion hole 205B for mounting the screws 60S is formed in the light-emitting element holding portion 205. The screws 60S are fixed to the screw holes 211A from below through the insertion hole 205B of the light-emitting element holding portion 205.

[0413] The cover 206 covers the wire 65. The wire 65 extends from the lamp unit 201 toward the motor housing 21 along the lower surface of the housing 4. In other words, the wire 65 extends from the lower opening 21D on the front surface of the motor housing 21 toward the lower surface of the housing 4. The wire 65 extends forward along the lower surface of the housing 4 and connects to the substrate 202 of the lamp unit 201. The wire 65 is connected to a plurality of light-emitting elements 53 on the substrate 202 for power supply.

[0414] Figure 43 This is a bottom view of the front of the fastening tool 1B from an angle, showing the state after the lampshade 204 according to the seventh embodiment has been removed. Figure 43 As shown, in the seventh embodiment, no connectors (connector 66A and connector 66B) are provided on the wire 65, and it is directly connected to the substrate 202 of the lamp unit 201.

[0415] like Figure 41 as well as Figure 43 As shown, the housing 4 has a groove 212 on its lower surface for arranging the wire 65. The groove 212 is a recessed portion extending upward from the lower surface of the housing 4. The groove 212 is provided along the front-rear direction on the lower surface of the housing 4, from the rear end of the cylindrical portion 82 to the rear end of the housing 4. The wire 65 is disposed in the groove 212.

[0416] In the seventh embodiment, the housing 4 has a light source arrangement section 213 on its lower surface for arranging a plurality of light emitters 53. The light source arrangement section 213 is arranged on the lower surface of the housing 4 at a position further rearward than the rear end of the cylindrical portion 82. The light source arrangement section 213 is arranged at a predetermined position inside the groove portion 212.

[0417] Specifically, a guide wall 214 is formed on the mounting surface 211, which serves as the bottom surface of the groove 212, and extends downward from the mounting surface 211. The guide wall 214 delineates the placement positions of the light source arrangement section 213 and the wire 65 within the groove 212. Additionally, two screw holes 211A are formed on the inner side of the groove 212 and the outer side of the guide wall 214. The guide wall 214 is formed to surround the light source arrangement section 213 (front and left / right directions). The lamp unit 201 and the optical component 203 are disposed within the light source arrangement section 213 surrounded by the guide wall 214. A guide groove 214A is formed on a portion of the guide wall 214 surrounding the light source arrangement section 213. The guide groove 214A is a recess formed by partially cutting the guide wall 214, and is formed on the left side of the guide wall 214 relative to the light source arrangement section 213. The protrusion 203C of the optical component 203 is disposed within this guide groove 214A. Based on this, the position of the lamp unit 201 in the in-plane direction (front-back and left-right directions) is determined.

[0418] The guide wall 214 opens the rear side of the light source arrangement section 213. The guide wall 214 extends rearward from both the left and right sides of the light source arrangement section 213. The conductor 65 is disposed in the area between the left and right guide walls 214. In addition, a grounding wire 67 connected to the grounding terminal 84B is disposed in the area between the left and right guide walls 214. The conductor 65 and the grounding wire 67 are disposed inside the same slot 212 and in the area between the left and right guide walls 214.

[0419] The guide wall 214 forms a narrow passage 84A at its rear end. The passage 84A extends to the rear surface of the housing 4. An opening 21D (see reference) appears at the lower part of the motor housing 21. Figure 41 The extended conductor 65 and the grounding wiring 67 pass through the passage section 84A.

[0420] like Figure 41 As shown, the cover 206 covers the wire 65 and the grounding wiring 67. The cover 206 extends rearward from the rear end of the light-emitting element holding part 205. The cover 206 extends to the front surface of the motor housing part 21.

[0421] The cover portion 206 has a claw portion 62A that engages with the motor housing portion 21. The claw portion 62A protrudes rearward from the rear end of the cover portion 206. The claw portion 62A engages with the motor housing portion 21 by inserting into the lower opening 21D of the motor housing portion 21. The rear end of the cover portion 206 can move in the front-rear direction due to the engagement between the motor housing portion 21 and the claw portion 62A, but cannot move downward. With the claw portion 62A engaged with the motor housing portion 21, the cover portion 206 is fixed to the housing 4. The cover portion 206 completely covers the lower opening 21D of the motor housing portion 21.

[0422] The lampshade 204, including the light-emitting element holding part 205 and the cover part 206, covers the portion of the lower surface of the housing 4 that is further rearward than the cylindrical part 82. The lampshade 204 is embedded inside the groove part 212 and covers the groove part 212. The lampshade 204 exposes the light-transmitting part 203B in the optical component 203 and covers the portion other than the light-transmitting part 203B.

[0423] During the assembly of the angular fastening tool 1B, the assembler places the lamp unit 201 and the optical component 203 in the light source placement section 213. After arranging the wire 65 and the grounding wire 67 in the area between the guide walls 214, the lamp cover 204 is then assembled onto the housing 4. With the claw 62A inserted into the lower opening 21D of the motor housing section 21 and engaged, the lamp cover 204 is fixed to the housing 4 using two screws 60S passing through the through hole 205B. When the lamp cover 204 is fixed to the housing 4, the lamp unit 201, positioned by the guide groove 214A, is placed within the opening 205A of the lamp cover 204. The optical component 203 is held between the lamp cover 204 and the lower surface of the housing 4 by the periphery of the opening 205A.

[0424] Figure 44 This is a longitudinal sectional view showing the front portion of the angular fastening tool 1B according to the seventh embodiment. Next, referring to... Figure 44 The arrangement position of the light-emitting element 53 according to the seventh embodiment will be described.

[0425] In the seventh embodiment, the light-emitting element 53 is held on the lower surface of the receiving portion of the deceleration mechanism 7 within the housing 4.

[0426] The reduction mechanism 7 is housed in the housing 4 and transmits the rotational force of the motor 6 to the main shaft 8. The reduction mechanism 7 is connected to the bevel gear 35, which serves as the pinion of the motor 6, and is also connected to the main shaft gear 8C of the main shaft 8. The reduction mechanism 7 is positioned in the front-rear direction between the bearing 38F, which holds the bevel gear 35 in a rotatable position, and the main shaft 8. The reduction mechanism 7 is located behind the main shaft 8 and connected to it from the rear. The reduction mechanism 7 includes: a first reduction section 41 connected to the bevel gear 35 (pinion); and a second reduction section 42 connected to the first reduction section 41 and the main shaft gear 8C. The first reduction section 41 and the second reduction section 42 are arranged in the front-rear direction. The second reduction section 42 is positioned in front of the first reduction section 41.

[0427] Multiple light-emitting elements 53, i.e., lamp units 201, are disposed on the lower surface of the housing 4 and overlap with the reduction mechanism 7 in the vertical direction. More specifically, the multiple light-emitting elements 53 overlap with the second reduction section 42 in the reduction mechanism 7 in the vertical direction. The multiple light-emitting elements 53 are disposed on the lower surface of the housing portion of the housing 4 that houses the second intermediate gear 42A and the second intermediate shaft 42B, which constitute the second reduction section 42. The multiple light-emitting elements 53 are disposed on the lower surface of the end of the main shaft 8 side in the housing portion of the reduction mechanism 7.

[0428] exist Figure 44 In this example, it can be understood that the housing space of the housing 4 is divided into multiple parts. That is, the housing 4 includes: a first part 221, which houses the main shaft 8 and the hammer 47; and a second part 222, which is continuous with respect to the rear of the first part 221. In the seventh embodiment, the light-emitting element 53 is held on the lower surface of the second part 222 within the housing 4.

[0429] In detail, an anvil 10 is provided in the first part 221 of the housing 4, which houses the striking mechanism 9 including the spindle 8 and the hammer 47, and is configured to protrude downward from the lower surface (cylindrical part 82) of the first part 221.

[0430] The reduction gear 7 is housed in the second part 222 of the housing 4. The first part 221 and the second part 222 are separated by a first partition wall 224. The second intermediate gear 42A of the second reduction gear 42 passes over the first partition wall 224 and meshes with the main shaft gear 8C. The first partition wall 224 defines the front end of the housing space of the reduction gear 7.

[0431] exist Figure 44 In this example, the housing 4 includes a third portion 223 following the second portion 222. A receiving recess 85 for accommodating the bearing 38F is formed in the third portion 223. The second portion 222 and the third portion 223 are separated by a second spacer 225 having a hole 88. The driven gear 41A of the first reduction gear 41 meshes with a bevel gear 35 passing through the hole 88. The second spacer 225 defines the rear end of the receiving space of the reduction gear 7.

[0432] Furthermore, multiple light-emitting elements 53, i.e., lamp units 201, are disposed on the lower surface of the second part 222 between the first part 221 and the third part 223. Regarding their position in the front-rear direction, the multiple light-emitting elements 53 are disposed in a position that overlaps with or is further rearward than the first partition wall 224 in the vertical direction. The multiple light-emitting elements 53 are disposed in a position that overlaps with or is further forward than the second partition wall 225 in the vertical direction. The multiple light-emitting elements 53 are disposed on the side of the first part 221 within the second part 222, i.e., the side close to the anvil 10. Therefore, the multiple light-emitting elements 53 are disposed further rearward than the spindle 8 and the striking mechanism 9 and close to the anvil 10. In the case of an impact wrench, a sleeve is mounted on the front tool holding part 51 of the anvil 10 as a front-end tool; however, sometimes the outer diameter of the sleeve becomes a large structure depending on the size of the bolts or other fasteners being tightened. In the seventh embodiment, the lamp unit 201 is located near the anvil 10, but is positioned at a suitable distance, so that even when a large front-end tool is installed, it is difficult to create a shadow because the light from the lamp unit 201 is blocked by the front-end tool.

[0433] However, for angular fastening tools used in fastening operations in confined spaces, it is desirable that the vertical dimensions of the front end (head) of the housing 4, which has the front tool holder 51, be smaller. Figure 44 In the example shown, by suppressing the vertical dimensions of the sliding surfaces that provide rotatable support for the spindle 8 and the anvil 10, the enlargement of the head's vertical dimensions can be suppressed. Specifically, the vertical dimensions of each of the sliding surfaces of the spindle bearing 44, which provides rotatable support for the upper end of the spindle 8, the sliding surface 47E between the hammer 47 and the spindle 8, and the sliding surface of the anvil bearing 46 are suppressed. The vertical dimension of the sliding surface of the spindle bearing 44 is smaller than the vertical dimension of the sliding surface of the intermediate bearing 42C, which supports the second intermediate shaft 42B of the reduction mechanism 7. Both the spindle bearing 44 and the intermediate bearing 42C are sliding bearings. The vertical dimension of the sliding surface 47E between the hammer 47 and the spindle 8 is less than half the vertical dimension Hs of the through hole through which the spindle 8 inserts into the hammer 47. The vertical dimension of the sliding surface of the anvil bearing 46 is less than 26% of the vertical dimension (total length) of the anvil 10.

[0434] Figure 45 This is a longitudinal sectional view showing the angular fastening tool 1B according to the seventh embodiment. Figure 46 This is a longitudinal sectional view showing the middle portion of the angular fastening tool 1B according to the seventh embodiment. Figure 47 This is a longitudinal sectional view used to illustrate the vertical positional relationship of the various parts of the angular fastening tool 1B involved in the seventh embodiment.

[0435] Next, refer to Figures 45 to 48The positional relationships of the various parts of the angular fastening tool 1B according to the seventh embodiment will be explained. First, the positional relationships of the various parts in the vertical direction will be explained.

[0436] like Figure 45 As shown, even in the seventh embodiment, similar to the first embodiment described above, in the vertical direction, the lower end portion 14B of the trigger stop 14 is positioned closer to the lower surface 21P of the motor housing portion 21 than the lower end portion of the front tool holding portion 51. The lower surface 21P of the motor housing portion 21 is located higher than the lower end portion of the front tool holding portion 51. The vertical distance H2 from the lower end portion 14B of the trigger stop 14 to the lower surface 21P of the motor housing portion 21 is less than the vertical distance H1 from the lower end portion 14B of the trigger stop 14 to the lower end portion of the front tool holding portion 51. The lower end portion 14B of the trigger stop 14 may also be located higher than the lower surface 21P of the motor housing portion 21.

[0437] like Figure 46 As shown, the trigger stop 14 includes a pressing surface 301 that is pressed during a pulling operation. The trigger stop 14 also includes a rotating shaft 302 that rotates the pressing surface 301 when pressed. The pressing surface 301 is the portion of the trigger stop 14 that is not covered by the housing 2 and is the surface pressed by a finger. The rotating shaft 302 is... Figure 46 The cross-section shown is a columnar component extending further inward and along the left-right direction. The rotating shaft 302 is supported by the housing 2 and is rotatable. The rotating shaft 302 and the pressing surface 301 are connected by a rotating arm 303. When the pressing surface 301 is pressed upward by a pulling operation, the trigger stop 14 rotates about the rotating shaft 302 toward the switch body 14A, thereby operating the switch body 14A.

[0438] The pressing surface 301 extends to the lower end 14B of the trigger stop 14 and is bent into a concave shape. By bending the pressing surface 301 into a concave shape, the finger can be easily held in the pressing surface 301 when performing a pulling operation.

[0439] Specifically, the pressing surface 301 has: a first end 301A, a second end 301B, and a middle portion 301C. The first end 301A is located at the lower end 14B of the trigger stop 14. The second end 301B is the end opposite to (front of) the first end 301A. The portion of the trigger stop 14 that is forward of the second end 301B is covered by the housing 2. The middle portion 301C is the portion between the first end 301A and the second end 301B. The middle portion 301C is a concave portion that curves upward. The middle portion 301C curves upward to a position higher than both the first end 301A and the second end 301B. By bending the middle portion 301C deeper to a position higher than both the first end 301A and the second end 301B, it is easy to hold a finger on the pressing surface 301.

[0440] like Figure 45 As shown, the middle portion 301C is located higher than the lower surface 21P of the motor housing portion 21 and lower than the lower surface of the handle 22A. Therefore, even when a finger is positioned on the pressing surface 301, it is difficult for the finger to protrude to a position lower than the lower surface 21P of the motor housing portion 21.

[0441] exist Figures 45 to 47 In the middle, it is shown that the ratio will be... Figure 4 A more compact example is the assembly of a smaller battery 325 within the battery holder 23. In this case, the lower end 14B of the trigger shift 14 is positioned higher than the lower surface of the battery 325. The lower surface of the battery 325 is positioned lower than the lower end 14B of the trigger shift 14 and higher than the lower end of the front tool holder 51.

[0442] like Figure 47 As shown, the lower end 14B of the trigger stop 14 is located further upward than the straight line 311 connecting the lower end of the front tool holder 51 to the rear end of the lower surface of the battery 325. When the angular fastening tool 1B is placed facing downward on a mounting surface such as a workbench, the straight line 311 connecting the lower end of the front tool holder 51 to the rear end of the lower surface of the battery 325 may come into contact with the mounting surface. Because the lower end 14B of the trigger stop 14 is located further upward than the straight line 311, even if the front tool holder 51 is placed facing downward, the trigger stop 14 will be less likely to come into contact with the mounting surface or objects on the mounting surface.

[0443] In addition, such as Figure 47As shown, the operation panel 16 is located further downward than the line 312 described below. Specifically, line 312 connects the upper front portion UF of the uppermost position in the motor housing 21 and housing 4, and the upper rear portion UR of the uppermost position in the gripping portion 22 and battery holding portion 23. When the angular clamping tool 1B is placed facing upwards on a worktable or similar surface, line 312 connecting the upper front portion UF and the upper rear portion UR could potentially come into contact with the surface. The operation panel 16 is exposed on the upper surface of the motor housing 21. Because the operation panel 16 is located further downwards than line 312, even when the angular clamping tool 1B is placed facing upwards with the front tool holding portion 51 facing upwards, the operation panel 16 is unlikely to come into contact with the surface or objects on the surface.

[0444] exist Figure 47 In the example, the upper front position UF is the upper surface near the connection between the motor housing 21 and the housing 4. Figure 47 In the example, the upper rear position UR is the upper surface of the battery holding part 23.

[0445] Figure 48 This is a perspective view of the battery holding portion 23 of the angular fastening tool 1B according to the seventh embodiment, viewed from a rear-oblique upper view. Figure 48 As shown, the battery holding portion 23 has an upwardly bulging dome-shaped portion 23A. The upper surface of the dome-shaped portion 23A includes a rear upper end position UR. By the upward bulging of the dome-shaped portion 23A, the upper surface of the battery holding portion 23 (rear upper end position UR) is positioned higher than the upper surface of the holding portion 22.

[0446] Even when the angular fastening tool 1B is placed in an upward position by the front upper position UF and the rear upper position UR on the upper surface of the angular fastening tool 1B, it is difficult for the area to contact the setting surface or an object on the setting surface.

[0447] In addition, such as Figure 47 As shown, the controller 18 is positioned further rearward than the switch board 16C. The controller 18 is located within the battery holding section 23. The controller 18 is located inside the dome-shaped section 23A. The internal space of the dome-shaped section 23A has a relatively large vertical height. Therefore, even when a relatively tall electronic device 18H, such as a discrete capacitor, is mounted on the controller 18, sufficient space can be ensured for the controller 18.

[0448] Next, we will explain the positional relationship of each part in the front-back direction.

[0449] like Figure 46As shown, even in the seventh embodiment, similar to the first embodiment described above, the switch substrate 16C is positioned in front of the trigger stop 14 at a position overlapping the motor 6 in the vertical direction. The front end portion 16F of the switch substrate 16C overlaps with the rear portion of the motor 6 in the vertical direction, and the rear end portion 16R of the switch substrate 16C overlaps with the front portion of the trigger stop 14 in the vertical direction. The switch substrate 16C extends in the front-rear direction and is configured to span the upper position of the motor 6 and the upper position of the trigger stop 14.

[0450] The front end 16F of the switch board 16C is positioned further forward than the rear end of the motor 6. The front end 16F of the switch board 16C is positioned further forward than the bearing 38R on the rear side. The rear end 16R of the switch board 16C is positioned further rearward than the front surface of the trigger stop 14.

[0451] In addition, the distance L3 in the front-to-back direction between the trigger stop 14 and the bearing 38R on the rear side of the motor 6 is less than the length L10 in the front-to-back direction of the switch board 16C (the distance between the front end 16F and the rear end 16R).

[0452] Furthermore, in the front-rear direction, the distance L11 from the center of the rotation shaft 302 to the operation button 16A is less than the distance L12 from the center of the rotation shaft 302 to the rear end (i.e., the first end 301A) of the pressing surface 301. Since the operation button 16A and the trigger switch 14 are located close to each other in the front-rear direction, both the operation button 16A and the trigger switch 14 can be operated with one hand, thereby improving operability.

[0453] Figure 49 This is a longitudinal sectional view used to illustrate the positional relationship of each part of the angular fastening tool 1B in the front-rear direction according to the seventh embodiment.

[0454] Regarding the angular fastening tool 1B used in confined spaces, it is conceivable that the operator can hold the angular fastening tool 1B away from their body by extending their hand, thereby allowing the tool head 51 to be oriented in various directions for fastening operations. Compared to pistol-type power tools, the angular fastening tool 1B is expected to be easy to operate even when fastening operations are performed at any angle and in any direction.

[0455] exist Figure 49The diagram shows the center of gravity position CG of the angular fastening tool 1B with the battery 325 assembled. In the angular fastening tool 1B, the motor 6 and the various components housed in the housing 4 (reduction mechanism 7, spindle 8, striking mechanism 9, and anvil 10) located further forward than the motor 6 are primarily metal, including the housing 4; therefore, a weight is present at the front. On the other hand, the battery holding section 23 at the rear of the angular fastening tool 1B holds the battery 325, which is the weight. Since the gripping section 22 and trigger shift 14 located between the battery 325 and the motor 6 are relatively light, their influence on the center of gravity position CG is relatively small. Therefore, under normal circumstances, the center of gravity position CG tends to shift towards the front where the weight is relatively concentrated, and thus the center of gravity position CG tends to be in a position away from the gripping section 22 (trigger shift 14). The further the center of gravity CG is from the holding part 22 (trigger shift 14), the more force is required to change and maintain the posture of the angular fastening tool 1B, which leads to a decrease in the operability (handling quality) of the angular fastening tool 1B.

[0456] like Figure 49 As shown, in the seventh embodiment, similarly to the first embodiment described above, the front-rear distance L1 between the trigger stop 14 and the motor 6 is less than the front-rear distance L2 between the trigger stop 14 and the controller 18. The front-rear distance L1 between the trigger stop 14 and the motor 6 is less than the front-rear distance L4 between the trigger stop 14 and the battery holding part 23. By making the distance L1 between the trigger stop 14 (holding part 22) and the motor 6 smaller, the center of gravity CG of the angular fastening tool 1B will approach the trigger stop 14 (holding part 22).

[0457] exist Figure 49 In the example, with the battery 325 assembled, the center of gravity CG of the angular fastening tool 1B is closer to the lower end 14B of the trigger stop 14 in the front-to-back direction than the front tool holding part 51. With the battery 325 assembled, the center of gravity CG is closer to the trigger stop 14 in the front-to-back direction than the front tool holding part 51. The center of gravity CG is closer to the trigger stop 14 in the front-to-back direction than the second intermediate shaft 42B. The center of gravity CG is closer to the trigger stop 14 in the front-to-back direction than the first intermediate shaft 41C.

[0458] exist Figure 49In this configuration, the center of gravity CG is located between the front end of the motor 6 and the lower end 14B of the trigger stop 14 (inside range 330) in the longitudinal direction. Specifically, in the assembled state of the battery 325, the center of gravity CG is located between the front end 16F and the rear end 16R of the switch board 16C in the longitudinal direction. That is, in the assembled state of the battery 325, the center of gravity CG is located further rearward than the front end 16F of the switch board 16C in the longitudinal direction. The center of gravity CG is located further forward than the rear end 16R of the switch board 16C in the longitudinal direction. Figure 49 In the example, with the battery 325 assembled, the center of gravity CG is located between the rotor core 32 and the rear bearing 38R.

[0459] In addition, Figure 49 In the example shown, battery 325 is compared to Figure 4 The battery 25 is a smaller type. Because the battery 325 is heavier than the battery 25, the center of gravity CG is located at... Figure 4 In the case of shifting to the rear. Even during assembly. Figure 4 With battery 25, the center of gravity CG, in the front-rear direction, will be positioned further forward than the trigger shifter 14. (In assembly...) Figure 4 With a battery capacity of 25, the center of gravity CG is compared to Figure 49 The position shown is closer to trigger switch 14.

[0460] Next, the shape of the gripping part 22 will be described. For example... Figure 45 As shown, in the seventh embodiment, similarly to the first embodiment, the circumference of the finest part 22N of the gripping part 22 is smaller than the circumference of the finest part 21N of the motor housing part 21.

[0461] Figure 50 This is a cross-sectional view of the gripping part 22 according to the seventh embodiment, viewed from the front. Figure 50 This represents the cross-section of the finest part 22N of the gripping section 22. For example... Figure 50As shown, regarding the cross-section of the grip portion 22 orthogonal to the front-back direction, the width W12 in the left-right direction is smaller than the width W11 in the top-bottom direction. The cross-sectional shape of the grip portion 22 orthogonal to the front-back direction is barrel-shaped. That is, the cross-sectional shape of the grip portion 22 has the largest left-right dimension (width W12) at the center of the top-bottom direction, and the left-right dimension decreases as it approaches the upper and lower ends. Furthermore, the cross-sectional shape of the grip portion 22 has the largest top-bottom dimension (width W11) at the center of the left-right direction, and the top-bottom dimension decreases as it approaches the right and left ends. The outer periphery of the grip portion 22 is composed of smooth curves and has no corners. Therefore, when the operator holds the grip portion 22, it is easy for the grip portion 22 to make close contact with the hand, thereby enabling a stable grip.

[0462] (Effect)

[0463] As described above, in the seventh embodiment, the angular fastening tool 1B includes: a gripping portion 22 extending in the front-rear direction; a motor housing portion 21 disposed in front of the gripping portion 22; a motor 6 disposed inside the motor housing portion 21; a spindle 8 disposed in front of the motor 6 and extending in a direction intersecting the front-rear direction, and rotating via the motor 6; a front tool holding portion 51 rotating via the spindle 8; a trigger stop 14 disposed in the gripping portion 22; and a switch board 16C disposed in front of the trigger stop 14 at a position overlapping the motor 6 in the vertical direction.

[0464] Based on the above configuration, the front-rear position of the switch board 16C is brought close to the motor 6 until the switch board 16C overlaps with the motor 6 in the vertical direction. Correspondingly, the trigger stop 14 can also be positioned near the rear of the switch board 16C. By bringing the switch board 16C, the motor 6, and the trigger stop 14 close together in the front-rear direction, the entire length of the angular fastening tool 1 can be suppressed, and the operability of the trigger stop 14 and the switch operation can be improved. As a result, the operability of the angular fastening tool 1 can be improved.

[0465] In the seventh embodiment, the front end portion 16F of the switch substrate 16C overlaps with the rear portion of the motor 6 in the vertical direction, and the rear end portion 16R of the switch substrate 16C overlaps with the front portion of the trigger stop 14 in the vertical direction.

[0466] According to the above configuration, the switch board 16C, the motor 6, and the trigger stop 14 can be brought close together in the front-to-back direction. By concentrating these components near the gripping area, the entire length of the angular fastening tool 1 can be suppressed, and the operability of the trigger stop 14 and the switch operation can be effectively improved.

[0467] In the seventh embodiment, the motor 6 includes a stator 26 and a rotor 27 rotatable relative to the stator 26. The angular fastening tool 1 includes bearings (38F, 38R) respectively disposed on the front and rear sides relative to the rotor 27 and supporting the rotor 27 so as to be rotatable. The distance L3 between the trigger stop 14 and the rear bearing 38R in the front-rear direction is less than the length of the switch board 16C in the front-rear direction.

[0468] According to the above configuration, the trigger stop 14 can be brought close to the bearing on the rear side of the rotating support of the motor 6. The entire length of the angular fastening tool 1 can be suppressed, and by arranging the motor 6, which serves as a weight-bearing device, near the trigger stop 14, the center of gravity CG of the angular fastening tool 1 can be brought close to the trigger stop 14. Therefore, since the front tool holding part 51 can be easily moved (operated), the handleability of the angular fastening tool 1 is excellent.

[0469] In the seventh embodiment, the angular fastening tool 1 includes a controller 18 that is connected to the switch board 16C via wiring and is disposed further rearward than the switch board 16C.

[0470] Based on the above configuration, by placing the controller 18 further rearward than the switch board 16C, it is not necessary to place the controller 18 below the switch board 16C. As a result, the space below the switch board 16C (between the motor 6 and the trigger switch 14) can be shortened.

[0471] In the seventh embodiment, the angular fastening tool 1 includes a battery holding part 23 connected to the rear end of the gripping part 22 and holding the battery 325 in a removable manner. A controller 18 is disposed in the battery holding part 23.

[0472] Based on the above configuration, the battery holding section 23 for mounting the battery 325 ensures sufficient storage space for the controller 18. Even when the controller 18 is positioned further rearward than the switch board 16C, the possibility of the angular fastening tool 1 becoming excessively large in length can be prevented.

[0473] In the seventh embodiment, the distance L1 between the trigger stop 14 and the motor 6 in the front-rear direction is less than the distance L2 between the trigger stop 14 and the controller 18 in the front-rear direction.

[0474] Based on the above configuration, the distance from the trigger shift 14 to the controller 18 on the rear side can be shortened compared to the distance from the trigger shift 14 to the motor 6 on the front side. As a result, the overall length of the angular fastening tool 1 can be suppressed. With the battery 325, which is a weight component, mounted in the battery holding part 23, weight balance can be easily achieved on the front and rear sides of the trigger shift 14, thereby improving the handling of the angular fastening tool 1.

[0475] In the seventh embodiment, the switch board 16C has an operation button 16A. The trigger stop 14 includes a pressing surface 301 that is pressed during a pull operation, and a rotation shaft 302 that rotates the pressing surface 301 when pressed. In the front-rear direction, the distance from the center of the rotation shaft 302 to the operation button 16A is less than the distance from the center of the rotation shaft 302 to the rear end of the pressing surface 301.

[0476] Based on the above configuration, the operation button 16A can be brought sufficiently close to the trigger switch 14. As a result, while the operator is holding the grip 22, the operability of both the pulling operation of the pressing surface 301 of the trigger switch 14 and the pressing operation of the operation button 16A can be improved.

[0477] In the seventh embodiment, the motor 6 includes a stator 26 and a rotor 27 capable of rotating relative to the stator 26. The switch board 16C overlaps with both the stator 26 and the rotor 27 in the vertical direction.

[0478] Based on the above configuration, since the switch board 16C and the motor 6 can be brought closer together in the front-rear direction, the overall length of the angular fastening tool 1 can be suppressed. Since the center of gravity of the angular fastening tool 1 can be brought closer to the trigger stop 14, the handleability of the angular fastening tool 1 is good.

[0479] In the seventh embodiment, the main shaft 8 extends downward along the rotation axis BX, which is orthogonal to the front-rear direction.

[0480] Based on the above configuration, the lower end of the angular fastening tool 1, which is equipped with the spindle 8, can be positioned on the front of the working area for fastening.

[0481] In the seventh embodiment, the angular fastening tool 1 includes a hammer 47 that moves relative to the spindle 8, and an anvil 10 that is struck directly or indirectly in the rotational direction by the hammer 47. A front tool holding part 51 is disposed at the lower end of the anvil 10.

[0482] Based on the above configuration, even the angular fastening tool 1, which is suitable for operation in confined spaces, can achieve a high fastening torque through the impact of the hammer 47. Even with the hammer 47 positioned on the front end of the angular fastening tool 1, the switch board 16C, motor 6, and trigger stop 14 can be brought closer together in the front-rear direction, resulting in good weight balance and improved handling.

[0483] In the seventh embodiment, the angular fastening tool 1 includes: a gripping portion 22 extending in a front-rear direction; a motor housing portion 21 disposed in front of the gripping portion 22; a motor 6 disposed inside the motor housing portion 21; a spindle 8 disposed in front of the motor 6 and extending in a direction intersecting the front-rear direction and rotating via the motor 6; a front-end tool holding portion 51 rotating via the spindle 8; a trigger stop 14 disposed in the gripping portion 22; a switch board 16C provided with a switch; and a controller 18 connected to the motor 6, the switch board 16C, and the trigger stop 14 via wiring. The motor 6, the switch board 16C, the trigger stop 14, and the controller 18 are arranged sequentially from front to rear.

[0484] According to the above configuration, a controller 18 is disposed behind the motor 6, the switch board 16C, and the trigger stop 14. Since the switch board 16C is disposed near the surface of the housing, the controller 18 is not disposed near the switch board 16C between the motor 6 and the trigger stop 14. Consequently, the distance between the motor 6 and the trigger stop 14 can be shortened. Because the switch board 16C, the motor 6, and the trigger stop 14 can be brought closer together in the front-rear direction, the entire length of the angular fastening tool 1 can be suppressed, and the operability of the trigger stop 14 and the switch operation can be improved. As a result, the operability of the angular fastening tool 1 can be improved.

[0485] In the seventh embodiment, the motor 6 includes a stator 26 and a rotor 27 rotatable relative to the stator 26. The angular fastening tool 1 includes bearings (38F, 38R) respectively disposed on the front and rear sides relative to the rotor 27 and supporting the rotor 27 so that it can rotate. The front end 16F of the switch board 16C is disposed at a position further forward than the rear bearing 38R.

[0486] According to the above configuration, since the switch board 16C is close to the motor 6, the switch board 16C, the motor 6, and the trigger switch 14 can be brought closer together.

[0487] In the seventh embodiment, the front end portion 16F of the switch board 16C is positioned further forward than the rear end portion of the motor 6.

[0488] According to the above configuration, the switch substrate 16C overlaps with the motor 6 in the vertical direction. This allows for a further reduction in the distance between the motor 6, the switch substrate 16C, and the trigger stop 14.

[0489] In the seventh embodiment, the angular fastening tool 1 includes a battery holding part 23 connected to the rear end of the holding part 22 and holding the battery 325 in a removable manner. When the battery 325 is assembled, the center of gravity CG of the angular fastening tool 1 is located between the front end 16F and the rear end 16R of the switch board 16C in the front-rear direction.

[0490] According to the above configuration, the center of gravity CG of the angular fastening tool 1 is located between the front end 16F and the rear end 16R of the switch board 16C, and is also close to the trigger stop 14. That is, since the center of gravity CG of the angular fastening tool 1 is close to the part that is held or operated, the operability of the angular fastening tool 1 is improved. In addition, it is easier to keep the position of the front tool holding part 51 stable during fastening operations.

[0491] (Variation example)

[0492] In the above embodiments, although the operation panel 16 is configured to overlap the motor 6 vertically, it is not limited to this. Figure 51 This is a longitudinal sectional view showing a modified example of the configuration of the operation panel 16. Figure 51 This represents the longitudinal section of the battery holding section 23.

[0493] exist Figure 51 In the illustrated variation, the operation panel 16 is provided in the battery holding portion 23. The operation panel 16 protrudes outward from the upper surface of the battery holding portion 23. The operation panel 16 is positioned within the battery holding portion 23 on the side opposite to the grip portion 22. The operation panel 16 is located in the dome-shaped portion 23A of the battery holding portion 23. The operation panel 16 is positioned on the rear slope of the upper surface of the upward-bulging dome-shaped portion 23A. The operation buttons 16A and the indicator display 16B of the operation panel 16 are located inside the panel opening penetrating the dome-shaped portion 23A. The switch board 16C is configured to seal the panel opening.

[0494] The switch substrate 16C and the controller 18 disposed inside the dome-shaped portion 23A overlap vertically. At least one of the front end portion 16F and the rear end portion 16R of the switch substrate 16C is disposed between the front end portion and the rear end portion of the controller 18. The switch substrate 16C and the controller 18 overlap vertically with the battery 325 held in the battery holding portion 23.

[0495] Explanation of reference numerals in the attached figures

[0496] 1…Angle fastening tool, 1A…Angle fastening tool, 1B…Angle fastening tool, 2…Housing, 2L…First housing, 2R…Second housing, 2S…Screw, 4…Housing, 4A…Housing body, 4B…Cover, 4F…Housing flange, 4H…Boss, 4S…Screw, 6…Motor, 7…Reduction mechanism, 8…Spindle, 8A…Flange, 8B…Spindle shaft, 8C…Spindle gear, 8D…Cylinder, 8F…Spindle groove, 9…Actuating mechanism, 10…Anvil, 10A…Anvil shaft, 10B…Anvil protrusion, 10C…Anvil recess, 12…Fan, 13…Battery assembly, 14…Trigger switch, 14A…Switch body, 14B…Lower end, 15…Forward / reverse switching switch, 16… …Operation panel, 16A…Operation buttons, 16B…Indicator display, 16C…Switch board, 16D…Switch plate, 16E…Connection terminal section, 16F…Front end, 16R…Rear end, 17…Lamp unit, 18…Controller, 18H…Electronic components, 19…Air inlet, 20…Exhaust outlet, 21…Motor housing section, 21A…Rear retaining section, 21B…Panel opening, 21C…Retaining groove, 21D…Lower opening, 21E…Annular rib, 21F…Housing flange, 21G…Support wall, 21H…Screw insertion hole, 21J…Protrusion, 21N…Finest part, 21P…Lower surface, 22…Holding part, 22A…Holding body, 22N…Finest part, 23…Battery holding part, 23A… Dome-shaped part, 25…battery, 25A…clamping hook, 26…stator, 27…rotor, 28…stator core, 29…front insulator, 30…rear insulator, 31…coil, 32…rotor core, 33…rotor shaft, 34…rotor magnet, 35…bevel gear, 37…sensor substrate, 38F…bearing, 38R…bearing, 41…first reduction gear, 41A…driven gear, 41B…first intermediate gear, 41C…first intermediate shaft, 41D…intermediate bearing, 42…second reduction gear, 42A…second intermediate gear, 42B…second intermediate shaft, 42C…intermediate bearing, 44…main shaft bearing, 45…washer, 46…anvil bearing, 46A…groove, 46B…sealing component, 47…hammer, 47 A…hammer groove, 47B…hammer protrusion, 47C…recess, 47D…main body, 47E…sliding surface, 48…ball bearing, 49…coil spring, 50…ball bearing, 51…front tool holder, 52…washer, 53…light emitter, 54…substrate, 55…dam, 56…phosphor, 57…optical component, 57A…outer cylinder, 57B…inner cylinder, 57C…light transmission part, 57D…protrusion, 58…molding resin, 59…buffer component, 60…lampshade, 60S…screw, 61…light emitter holder, 61A…peripheral wall, 61B…locking part, 61H…boob, 62…cover, 62A…claw, 63…cover recess, 65…wire, 65A…first wire, 65B…second wire66… Connector, 66A… Connector, 66B… Connector, 67… Grounding wiring, 70… Screw, 71… Inner ring, 72… Outer ring, 73… Ball bearing, 81… Mounting surface, 81A… Screw hole, 82… Cylindrical part, 83… Guide protrusion, 84… Groove, 84A… Passage part, 84B… Grounding terminal, 85… Receiving recess, 85A… Radial support surface, 85B… Front support surface, 85C… O-ring, 85D… Groove, 86… Outer cylinder, 87… Inner cylinder, 88… Hole, 89… Engaging hole, 91… Intermediate support component, 91A… Intermediate support component, 91B… Intermediate support component, 91C… Intermediate support component, 91D… Intermediate support component, 91E… Intermediate support component, 92… Center opening, 93…recess, 94…rear support surface, 101…outer periphery, 102…inner periphery, 103…outer periphery mounting portion, 104…inner periphery mounting portion, 111…shaft, 112…spur gear, 113F…rotor bearing, 114…driven gear, 115A…first intermediate gear, 115B…second intermediate gear, 115C…intermediate shaft, 116…intermediate bearing, 118…receiving recess, 118A…radial support surface, 118B…front support surface, 119…front receiving portion, 120…rear receiving portion, 121…first receiving chamber, 122…second receiving chamber, 135…bevel gear, 139…bearing, 151…support surface, 152…protrusion, 161…upper surface, 162…lower surface, 163…first undercut 164…Second missing part, 165…Plate part, 166A…Middle part, 166B…End part, 166…First engaging claw, 167…Second engaging claw, 167A…Middle part, 167B…End part, 167C…Guide surface, 168…Switch label, 170…Switch hole, 171…Indicator hole, 172…Peripheral part, 173…Central part, 174…Pressing part, 175…Top surface, 176…Corner part, 201…Lamp unit, 202…Substrate, 203…Optical component, 203A…Side wall part, 203B…Light transmission part, 203C…Protrusion, 203D…Shoulder part, 204…Lamp cover, 205…Light-emitting body holding part, 205A…Opening part, 205B…Through hole, 206…Cover part 211… Mounting surface, 211A… Screw hole, 212… Groove, 213… Light source mounting section, 214… Guide wall, 214A… Guide groove, 221… First part, 222… Second part, 223… Third part, 224… First partition wall, 225… Second partition wall, 301… Pressing surface, 301A… First end, 301B… Second end, 301C… Middle part, 302… Rotating shaft, 303… Rotating arm, 311… Straight line, 312… Straight line, 325… Battery, 330… Range, A… First direction, B… Second direction, CL… Gap, CL1… First narrow slit, CL2… Second narrow slit, D1… Inner diameter, D2… Inner diameter, D3… Depth, D4… Thickness, FM… Fixing component,FS…Mating surface, H1…Top-bottom distance, H2…Top-bottom distance, Hs…Top-bottom dimension, HF1…Protrusion height, HF2…Protrusion height, HP1…Protrusion height, HP2…Protrusion height, PS1…First part, PS2…Second part, L1…Distance, L2…Distance, L3…Distance, L4…Distance, L10…Length, L11…Distance, L12…Distance, SW…Switch, W1…Width, W2…Width, W11…Width, W12…Width, WF1…Width, WF2…Width.

Claims

1. An angular fastening tool, characterized in that, The angular fastening tool includes: The gripping part extends along the front-to-back direction; The motor housing is positioned in front of the gripping portion; A motor, which is disposed inside the motor housing portion; A main shaft, which is positioned in front of the motor, extends in a direction intersecting the front-back direction, and is rotated by the motor; The front tool holder rotates via the main shaft; A trigger stop, which is disposed in the grip; and A switch board is disposed in front of the trigger stop at a position that overlaps with the motor in the vertical direction.

2. The angular fastening tool according to claim 1, characterized in that, The front end of the switch substrate overlaps with the rear part of the motor in the vertical direction, and the rear end of the switch substrate overlaps with the front part of the trigger switch in the vertical direction.

3. The angular fastening tool according to claim 1, characterized in that, The motor has: a stator and a rotor capable of rotating relative to the stator. The angular fastening tool further comprises: bearings respectively disposed on the front and rear sides relative to the rotor, supporting the rotor as rotatable bearings. The distance between the trigger stop and the bearing on the rear side in the front-to-back direction is less than the length of the switch substrate in the front-to-back direction.

4. The angular fastening tool according to claim 1, characterized in that, The angular fastening tool further includes a controller that is connected to the switch substrate via wiring and is positioned further rearward than the switch substrate.

5. The angular fastening tool according to claim 4, characterized in that, The angular fastening tool further includes: a battery holding part connected to the rear end of the gripping part and holding the battery in a removable manner. The controller is located in the battery holding section.

6. The angular fastening tool according to claim 4, characterized in that, The distance between the trigger shift and the motor in the front-to-back direction is less than the distance between the trigger shift and the controller in the front-to-back direction.

7. The angular fastening tool according to claim 1, characterized in that, The switch board has operation buttons. The trigger switch includes: a pressing surface that is pressed during a pulling operation, and a rotating shaft that causes the pressing surface to rotate as the pressing is performed. In the front-to-back direction, the distance from the center of the rotating shaft to the operation button is less than the distance from the center of the rotating shaft to the rear end of the pressing surface.

8. The angular fastening tool according to claim 1, characterized in that, The motor has: a stator and a rotor capable of rotating relative to the stator. The switch substrate overlaps with both the stator and the rotor in the vertical direction.

9. The angular fastening tool according to claim 1, characterized in that, The main shaft extends downward along a rotation axis orthogonal to the front-back direction.

10. The angular fastening tool according to claim 1, characterized in that, The angular fastening tool further comprises: a hammer that moves relative to the spindle, and an anvil that is struck directly or indirectly in the rotational direction by the hammer. The front tool holder is located at the lower end of the anvil.

11. The angular fastening tool according to claim 1, characterized in that, The angular fastening tool further comprises: a housing and an operation panel. The housing includes: the gripping portion and the motor housing portion. The operation panel includes: the switch base plate, a switch mounted on the switch base plate, and a switch plate mounted on the switch base plate in a manner that surrounds at least a portion of the switch. The housing has: a panel opening for configuring the switch plate, and a retaining groove formed on the inner surface of the housing. The switch substrate is held in the housing by inserting a portion of the switch substrate into the retaining groove.

12. An angular fastening tool, characterized in that, The angular fastening tool includes: The gripping part extends along the front-to-back direction; The motor housing is positioned in front of the gripping portion; A motor, which is disposed inside the motor housing portion; A main shaft, which is positioned in front of the motor, extends in a direction intersecting the front-back direction, and is rotated by the motor; The front tool holder rotates via the main shaft; A trigger stop is provided in the gripping part; A switch board, which is equipped with a switch; as well as The controller is connected via wiring to the motor, the switch board, and the trigger switch. The motor, the switch board, the trigger switch, and the controller are arranged sequentially from front to back.

13. The angular fastening tool according to claim 12, characterized in that, The motor has: a stator and a rotor capable of rotating relative to the stator. The angular fastening tool further comprises: bearings respectively disposed on the front and rear sides relative to the rotor, supporting the rotor as rotatable bearings. The front end of the switch substrate is positioned further forward than the bearing on the rear side.

14. The angular fastening tool according to claim 13, characterized in that, The front end of the switch board is positioned further forward than the rear end of the motor.

15. The angular fastening tool according to claim 12, characterized in that, The angular fastening tool further includes: a battery holding part connected to the rear end of the gripping part and holding the battery in a removable manner. The controller is located in the battery holding section.

16. The angular fastening tool according to claim 12, characterized in that, The distance between the trigger shift and the motor in the front-to-back direction is less than the distance between the trigger shift and the controller in the front-to-back direction.

17. The angular fastening tool according to claim 12, characterized in that, The angular fastening tool further includes: a battery holding part connected to the rear end of the gripping part and holding the battery in a removable manner. In the assembled state of the battery, the center of gravity of the angular fastening tool is located between the front end and the rear end of the switch substrate in the front-rear direction.

Images