Work equipment

Abstract

To improve workability.SOLUTION: In a hammer drill 10, a lens 52 of a display 50 is provided on a body housing 22, and a lens body part 56 of the lens 52 is exposed from an exposed part 22D formed on right and left side parts of the body housing 22. Further, an arrangement position of the lens body part 56 of the display 50 in a vertical direction is set at a position overlapping with a trigger 30, and is visibly exposed when viewed from a rear side. That is, the lens body part 56 positioned on a front side of the trigger 30 is visibly exposed to the outside of the trigger 30 in a longitudinal direction when viewed from a rear side. By this, piercing can be performed by the hammer drill 10 while confirming an attitude state of the hammer drill 10 by light radiated from the lens body part 56. Therefore, the workability of the hammer drill 10 can be improved.SELECTED DRAWING: Figure 3

Description

Technical Field

[0001] The present invention relates to a working machine.

Background Art

[0002] The drilling tool described in Patent Document 1 below has a motor housing extending in the front-rear direction (first direction), and a handle extending downward (one side in the second direction) from the rear end portion of the motor housing. Further, the drilling tool has an inclination sensor, and an LED (display unit) is provided on the outer peripheral portion of the upper part of the motor housing. Then, the inclination of the drilling tool with respect to the front-rear direction is detected by the output from the inclination sensor, and the emission color etc. of the LED are changed according to the inclination. Thereby, since the operator can work while recognizing the posture state of the drilling tool, the workability can be improved.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] By the way, in a working machine such as a drilling tool, the working machine is changed to various postures by an operator located on the rear side of the working machine. Therefore, by making the display unit visible corresponding to various postures of the working machine, the workability can be further improved.

[0005] In consideration of the above facts, an object of the present invention is to provide a working machine capable of improving workability.

Means for Solving the Problems

[0006] One or more embodiments of the present invention are a work machine comprising: a drive unit; a main body housing housing the drive unit; a tip tool extending from the main body housing to one side in a first direction and operated by the driving force of the drive unit; a gripping portion provided on the other side in the first direction relative to the main body housing and extending in a second direction perpendicular to the first direction; and an operating portion operated by an operator to switch between driving and stopping the drive unit; and a handle housing provided in the main body housing and exposed from the outer periphery of the main body housing in the third direction, with the direction perpendicular to the first and second directions being the third direction. The position in the second direction is set to overlap with the operating unit, The work machine is equipped with a display unit that is visible from the other side of the first direction and displays information about the posture of the work machine, the main body housing houses a fan that is operated by the drive unit to generate an airflow, the main body housing has an intake port that allows the airflow to flow into the main body housing and an exhaust port that allows the airflow to flow out of the main body housing, and the display unit is located on one side of the exhaust port in the second direction.

[0007] One or more embodiments of the present invention are work machines in which the position of the display unit in the second direction is set to overlap with the tip tool.

[0008] One or more embodiments of the present invention are work machines in which, when viewed from the other side of the first direction, the display unit is arranged on both sides of the handle housing in the third direction.

[0010] One or more embodiments of the present invention are provided in which a display protection portion is formed on the outer periphery of the main housing between the display portion and the exhaust port, and the display protection portion at least part of This is a work machine located outside the display unit in the third direction.

[0011] One or more embodiments of the present invention are a work machine comprising: a drive unit; a main body housing housing the drive unit; a tip tool extending from the main body housing to one side in a first direction and operated by the driving force of the drive unit; a gripping portion provided on the other side in the first direction relative to the main body housing and extending in a second direction perpendicular to the first direction; and an operating portion operated by an operator to switch between driving and stopping the drive unit; and a handle housing provided in the main body housing and exposed from the outer periphery of the main body housing in the third direction, with the direction perpendicular to the first and second directions being the third direction. The position in the second direction is set to overlap with the operating unit, The work machine includes a display unit that is visible from the other side of the first direction and displays information about the posture of the work machine, the display unit extending in the third direction and housed in the main body housing, and having lens body portions exposed to the outside of the main body housing at both longitudinal ends, a pair of substrates held by the lens body portion, and light sources mounted on each of the pair of substrates.

[0012] One or more embodiments of the present invention are working machines comprising a lens comprising a lens connecting portion extending in the third direction, and a lens body portion connected to both longitudinal ends of the lens connecting portion, protruding from the lens connecting portion to one side in the first direction, and arranged on both sides in the third direction of an inner member housed in the main body housing.

[0013] One or more embodiments of the present invention are work machines in which a transmission mechanism for transmitting the driving force of the drive unit to the tip tool is housed in the main body housing, and the inner member is a dynamic vibration absorber that absorbs vibrations generated by the operation of the transmission mechanism.

[0014] One or more embodiments of the present invention are a work machine comprising: a drive unit; a main body housing housing the drive unit; a tip tool extending from the main body housing to one side in a first direction and operated by the driving force of the drive unit; a gripping portion provided on the other side in the first direction relative to the main body housing and extending in a second direction perpendicular to the first direction; and an operating portion operated by an operator to switch between driving and stopping the drive unit; and a handle housing provided in the main body housing and exposed from the outer periphery of the main body housing in the third direction, with the direction perpendicular to the first and second directions being the third direction. The position in the second direction is set to overlap with the operating unit, The work machine is equipped with a display unit that is visible from the other side of the first direction and displays information about the posture of the work machine, a groove-shaped gap is formed between the main body housing and the handle housing that extends in the second direction and is open to one side of the second direction, and the display unit is positioned on the other side of the second direction relative to the gap so as to overlap with the gap in the second direction, and is visible from one side of the second direction through the gap.

[0015] One or more embodiments of the present invention are a work machine in which the handle housing is connected to the main body housing so as to be movable relative to the main body housing in the first direction, and the size of the gap in the first direction changes when the handle housing moves relative to the main body housing. 。 [Effects of the Invention]

[0016] According to one or more embodiments of the present invention, workability can be improved. [Brief explanation of the drawing]

[0017] [Figure 1] This is a side view from the right, showing the hammer drill according to this embodiment. [Figure 2] Figure 1 is a cross-sectional view from the right side showing the inside of a hammer drill. [Figure 3]It is a rear view seen from the rear side showing the upper part of the hammer drill shown in FIG. 1. [Figure 4] It is a plan view seen from the upper side showing the rear part of the hammer drill shown in FIG. 1. [Figure 5] It is a cross-sectional view (cross-sectional view taken along line 5-5 in FIG. 1) seen from the front side showing the periphery of the display part of the hammer drill shown in FIG. 1. [Figure 6] It is a cross-sectional view (cross-sectional view taken along line 6-6 in FIG. 1) seen from the upper side showing the periphery of the display part of the hammer drill shown in FIG. 1. [Figure 7] It is a perspective view seen from the rear obliquely backward showing the periphery of the right lens body part in the display part of the hammer drill shown in FIG. 1. [Figure 8] It is an explanatory diagram for explaining the display part of the hammer drill shown in FIG. 7.

Mode for Carrying Out the Invention

[0018] Hereinafter, the hammer drill 10 as a working machine according to the present embodiment will be described with reference to the drawings. The arrows UP, FR, and RH appropriately shown in the drawings indicate the upper side, the front side, and the right side of the hammer drill 10. In the following description, when the up-down, front-rear, and left-right directions are used for explanation, unless otherwise specified, they indicate the up-down direction, the front-rear direction, and the left-right direction of the hammer drill 10. And the front-rear direction corresponds to the first direction of the present invention, the up-down direction corresponds to the second direction of the present invention, and the left-right direction corresponds to the third direction of the present invention.

[0019] As shown in FIGS. 1 and 2, the hammer drill 10 is configured as an electric tool for performing drilling and other operations on a workpiece. The hammer drill 10 includes a housing 20, a motor 34 as a driving part, and a transmission mechanism 40 that transmits the driving force of the motor 34 to the tip tool T. Further, the hammer drill 10 has a display part 50 for notifying the posture state of the hammer drill 10. Hereinafter, each component of the hammer drill 10 will be described.

[0020] (Regarding the housing 20) The housing 20 constitutes the outer casing of the hammer drill 10. The housing 20 includes a main housing 22 that constitutes the front part of the housing 20 and a handle housing 24 that constitutes the rear part of the housing 20. The main housing 22 and the handle housing 24 are each composed of multiple housing members.

[0021] The main housing 22 is formed in a roughly inverted L-shape when viewed from the right side. Multiple (three in this embodiment) air intake ports 22A are formed through the side wall of the lower end at the rear of the main housing 22. The air intake ports 22A are formed in the shape of elongated holes with the front-to-back direction as their longitudinal direction, and the three air intake ports 22A are arranged in the front-to-back direction. In addition, multiple (five in this embodiment) exhaust ports 22B are formed through the upper side wall at the rear end of the main housing 22. The exhaust ports 22B are formed in the shape of elongated holes with the front-to-back direction as their longitudinal direction, and are arranged in the vertical direction.

[0022] As shown in Figures 1 to 7, a stepped portion 22C is formed on the outer circumference of the upper end of the rear end of the main housing 22, above the exhaust port 22B, for positioning the upper front end of the handle housing 24, which will be described later. The stepped portion 22C is positioned one step lower inward from the outer circumference of the main housing 22 and is formed on the left and right side walls and the upper wall of the main housing 22. In other words, when viewed from the rear, the stepped portion 22C is formed in a roughly inverted U shape that is open downwards.

[0023] On the left and right side walls of the main housing 22, exposed portions 22D are formed in the left-right direction at positions corresponding to the lower end of the stepped portion 22C, for exposing the lens 52 of the display portion 50, which will be described later. The exposed portions 22D are formed across the front wall of the stepped portion 22C, and the front wall of the stepped portion 22C is open to the rear. On the outer circumference of the main housing 22, a pair of lens protection portions 22E are provided on the left and right sides at a position between the stepped portion 22C and the exhaust port 22B, and the lens protection portions 22E protect the lens 52, which will be described later. The lens protection portions 22E extend in the front-rear direction, and their rear ends are bent inward in the left-right direction, covering the lower end of the lens body portion 56, which will be described later, from the left-right outer and rear sides. The front end of the lens protection portion 22E is bent upward.

[0024] The handle housing 24 extends vertically, and its upper and lower ends are bent forward and connected to the rear end of the main housing 22. Specifically, the front end of the upper end of the handle housing 24 is connected to the upper end of the main housing 22 by an upper connecting mechanism 26 (see Figure 2) so as to be movable relative to it in the front-rear direction. The lower end of the handle housing 24 is connected by a lower connecting mechanism 28 (see Figure 2) so as to be rotatable in the left-right direction as the axial direction. The front end of the upper end of the handle housing 24 is formed in a substantially U-shape that opens downward when viewed from the front, and is positioned within the stepped portion 22C of the main housing 22, while being spaced further back than the front surface of the stepped portion 22C. As a result, a groove-shaped gap 20A is formed between the main housing 22 and the handle housing 24 in the housing 20, and the gap 20A allows the handle housing 24 to move forward. Specifically, the gap 20A is composed of a pair of left and right first gaps 20A1 extending in the vertical direction, and a second gap 20A2 connecting the upper ends of the first gaps 20A1. The front end of the handle housing 24 is positioned above the exposed portion 22D, and the lower end of the first gap 20A1 is open to the rear. The lens body 56 of the lens 52, which will be described later, is exposed from above so that it can be seen.

[0025] The vertically extending portion of the handle housing 24 is configured as a gripping portion 24A for the operator to grasp. The left-right dimension of the gripping portion 24A is set to be smaller than the width dimension of the upper and lower ends of the handle housing 24. As shown in Figure 2, a trigger 30 is provided as an operating part at the upper end of the gripping portion 24A. The trigger 30 protrudes forward from the handle housing 24 and is configured to be operated by pulling it backward. A switch mechanism 31 is provided on the gripping portion 24A behind the trigger 30. The switch mechanism 31 has a switch (not shown) that is operated by the trigger 30. This switch is electrically connected to a controller 32 provided at the lower end of the main body housing 22 and outputs an output signal to the controller 32 according to the operating state of the trigger 30. The controller 32 is located between the left and right air intake ports 22A of the main body housing 22. A battery pack 33 is mounted at the lower end of the handle housing 24, and power is supplied from the battery pack 33 to the motor 34 and the controller 32, which will be described later.

[0026] (Regarding motor 34) The motor 34 is configured as a three-phase brushless motor and is housed within the lower rear end of the main body housing 22. Specifically, the motor 34 is positioned above the controller 32 and is electrically connected to the controller 32. The motor 34 has an output shaft 34A whose axis is oriented vertically. The lower end of the output shaft 34A is rotatably supported by a motor bearing 35 fixed to the main body housing 22, and the upper end portion of the output shaft 34A is rotatably supported by a motor bearing 36 held at the lower end of the inner housing 41 in the transmission mechanism 40, which will be described later. A pinion gear 34B is formed at the upper end of the output shaft 34A.

[0027] A fan 37 is integrally rotatable with the output shaft 34A in its vertical middle section. The fan 37 is formed in a roughly disc shape with its thickness in the vertical direction and is configured as a centrifugal fan. When the fan 37 rotates together with the output shaft 34A, an airflow AR is generated that flows into the main housing 22 from the intake port 22A of the main housing 22. This airflow AR then flows into the inside of the fan 37 from the lower central part, and the incoming air flows radially outward and upward from the fan 37 before being exhausted from the exhaust port 22B. As a result, the controller 32 and the motor 34 are cooled by the airflow AR.

[0028] (Regarding transmission mechanism 40) The transmission mechanism 40 is configured as a mechanism that transmits the rotational force of the motor 34 to the tip tool T and drives the tip tool T. The transmission mechanism 40 consists of an inner housing 41, an intermediate shaft 42, and a transmission section 47, and is housed in the upper part of the main body housing 22 and is positioned in front of the exhaust port 22B.

[0029] The inner housing 41 is formed in a roughly bottomed elliptical shape that opens to the front. The inner housing 41 is positioned above the motor 34 so as to partition the upper rear end of the main housing 22 in the front-rear direction. A motor bearing 36 is held at the lower end of the inner housing 41, and the output shaft 34A of the motor 34, supported by the motor bearing 36, is located inside the inner housing 41.

[0030] The intermediate shaft 42 is formed in a substantially cylindrical shape with its axial direction in the front-rear direction, and its front and rear ends are rotatably supported by bearings 43 and 44 fixed to the main body housing 22. A bevel gear 45 is integrally rotatably mounted on the rear end of the intermediate shaft 42, and the bevel gear 45 meshes with the pinion gear 34B of the output shaft 34A. As a result, when the motor 34 is driven and the output shaft 34A rotates, the intermediate shaft 42 rotates around its own axis. A motion conversion member 46 is provided on the intermediate shaft 42, and the motion conversion member 46 is configured to convert the rotational motion of the intermediate shaft 42 into reciprocating motion in the front-rear direction, thereby applying a striking force to the transmission unit 47, which will be described later.

[0031] The transmission unit 47 extends in the front-rear direction above the intermediate shaft 42. The tip tool T is attached to the front end of the transmission unit 47. The tip tool T is formed in a substantially cylindrical shape with the front-rear direction as its axial direction, and the rear end of the tip tool T is attached to the transmission unit 47. The transmission unit 47 is also connected to the intermediate shaft 42. As a result, the rotational force of the motor 34 is transmitted to the tip tool T, causing the tip tool T to rotate around its own axis and perform drilling on the workpiece. In addition, the impact force from the motion conversion member 46 is applied to the tip tool T via the transmission unit 47.

[0032] A dynamic vibration absorber 48 is provided as an inner component on the rear side of the inner housing 41. The dynamic vibration absorber 48 has a support plate 48A with the front-rear direction as the thickness direction, and the lower end of the support plate 48A is fixed to the inner housing 41. A weight 48B is provided on the upper part of the support plate 48A, and the weight 48B is formed in a block shape with the front-rear direction as the thickness direction. The dynamic vibration absorber 48 is configured to absorb the front-rear vibrations that occur when the transmission mechanism 40 is in operation.

[0033] (Regarding the display unit 50) As shown in Figures 1 to 8, the display unit 50 is operated by the controller 32 and is configured as a notification unit that notifies the attitude state of the hammer drill 10. Specifically, the display unit 50 has an LED 64 as a light source, and the LED 64 is electrically connected to the controller 32. In addition, a tilt sensor (not shown) for detecting the tilt of the hammer drill 10 is provided inside the main housing 22. The tilt sensor is composed of an acceleration sensor or the like and is electrically connected to the controller 32. The controller 32 then detects the attitude state of the hammer drill 10 based on the output signal from the tilt sensor and controls the illumination of the LED 64 according to the attitude state of the hammer drill 10, so that the illumination color of the LED 64 changes.

[0034] As shown in Figures 5 to 8, the display unit 50 is composed of a lens 52 and a pair of left and right substrate units 60. The lens 52 is made of a light-transmitting resin material. In a plan view, the lens 52 is formed in a substantially U-shaped block that extends in the left-right direction and is open to the front. Specifically, the lens 52 is composed of a lens connecting portion 54 that extends in the left-right direction and a pair of left and right lens body portions 56 that protrude forward from both longitudinal ends of the lens connecting portion 54.

[0035] The lens connecting portion 54 is formed in a substantially elongated plate shape with the front-to-back direction being the thickness direction and extending in the left-to-right direction. A wiring rib 54A for routing wiring 66 connecting the substrate unit 60 and the controller 32 is provided at the lower end of the lens connecting portion 54. The wiring rib 54A protrudes rearward from the lens connecting portion 54 and extends in the left-to-right direction. A retaining piece 54B is integrally formed at the left-to-right center of the wiring rib 54A. The retaining piece 54B is formed in a substantially rectangular plate shape with the front-to-back direction being the thickness direction and extends upward from the rear end of the wiring rib 54A. An insertion portion 54C for inserting the wiring 66 is formed at the left end of the wiring rib 54A. The insertion portion 54C is formed in a substantially rectangular cylindrical shape with the up-to-down direction being the axial direction and the left-to-right direction being the longitudinal direction, and protrudes downward from the wiring rib 54A. The inside of the insertion portion 54C is penetrating in the up-to-down direction.

[0036] The lens body 56 is formed in a roughly rectangular box shape that is open to the bottom. The longitudinal ends of the lens connecting portion 54 are connected to the rear end portions of the inner walls in the left-right direction of the lens body 56, so that the lens body 56 protrudes forward of the lens connecting portion 54. At the rear end of the inner wall in the left-right direction of the lens body 56, a communication groove 56A (see Figures 6 and 8) is formed, extending in the left-right direction, adjacent to the rear of the lens connecting portion 54. Inside the lens body 56, a retaining groove 56B (see Figures 6 and 8) is formed in the middle portion in the left-right direction, which accommodates and holds the substrate 62, which will be described later. The retaining groove 56B extends in the front-rear direction and is open to the bottom. That is, the retaining groove 56B is formed as a groove that is lower than the inner circumferential surfaces of the front, top, and rear walls of the lens body 56, and extends along the circumferential direction of the lens body 56. Furthermore, a stepped portion 56C is formed on the outer circumference of the front part of the lens body 56, which is slightly lower than the outer circumference of the rear part.

[0037] The lens 52 is then attached to the main housing 22 by being sandwiched from the left and right outer sides by the housing members of the main housing 22. Specifically, the lens body 56 protrudes outward from the exposed portion 22D of the main housing 22 in the left and right directions, is positioned within the lower end of the stepped portion 22C, and is visible to the outside of the main housing 22. More specifically, the lens body 56 is visible from the left and right outer sides, the rear, and the top. More specifically, when viewed from the rear, the lens body 56 is positioned on the left and right outer sides of the handle housing 24 and is visible to the outside (see Figure 3). Also, when viewed from above, the lens body 56 is positioned to overlap with the first gap 20A1 of the gap 20A, and is visible to the outside from above by the first gap 20A1 (see Figure 4). Furthermore, the vertical position of the lens body 56 is set to overlap with the tip tool T and the trigger 30. In other words, when viewed from the rear, the lens body 56 is located to the left and right of the tip tool T and trigger 30 (see Figure 3).

[0038] Furthermore, when the lens 52 is assembled to the housing 20, the front part of the lens body 56 (the part where the stepped portion 56C is formed) is housed inside the main housing 22 by the exposed portion 22D, and the lens protection portion 22E of the main housing 22 covers the lower end of the lens body 56 from the left and right outer and rear sides (see Figures 6 and 7). That is, the lens protection portion 22E is positioned outward in the left and right direction relative to the lens body 56. Also, when the lens 52 is assembled to the housing 20, the lower opening of the lens body 56 is closed by the lower surface of the stepped portion 22C. In addition, the lens 52 is positioned behind the upper end of the dynamic vibration absorber 48, and the lens body 56 is positioned outward in the left and right direction relative to the dynamic vibration absorber 48 (see Figure 6).

[0039] The substrate unit 60 comprises a substrate 62 and a pair of LEDs 64 as light sources. The substrate 62 is formed in a substantially rectangular plate shape with the left-right direction being the thickness direction. The substrate 62 is inserted from below into the retaining groove 56B of the lens body 56 and held by the lens body 56. The pair of LEDs 64 are mounted on the rear of the left-right outer surface of the substrate 62 and are arranged side by side in the vertical direction. The LEDs 64 are electrically connected to the controller 32 by wiring 66 extending from the substrate 62. Specifically, the wiring 66 extending from the controller 32 is inserted from below into the insertion portion 54C of the lens 52. The wiring 66 that is inserted into the insertion portion 54C and heading toward the right-side substrate unit 60 is routed between the retaining piece 54B and the lens connecting portion 54 above the routing rib 54A, and is also inserted into the communication groove 56A of the right-side lens body 56. The wiring 66 that passes through the insertion section 54C and is directed toward the left-side circuit board unit 60 is inserted through the communication groove 56A of the left-side lens body 56. Furthermore, the wiring 66 connecting the left and right circuit board units 60 is inserted through the communication groove 56A of the left and right lens body 56 and is routed between the retaining piece 54B and the lens connecting section 54 above the routing rib 54A. As a result, when the LED 64 is illuminated by the controller 32, the emitted light is projected from the top, side, and rear surfaces of the lens body 56 outwards, informing the operator of the position of the hammer drill 10. In addition, the controller 32 performs the same illumination control on both the left and right LEDs 64. In other words, both the left and right LEDs 64 are illuminated in the same color by the control of the controller 32.

[0040] (Effects and Benefits) When drilling with the hammer drill 10 configured as described above, the operator pulls the trigger 30 of the hammer drill 10, which drives the motor 34 and causes the tip tool T to rotate around its axis. This allows drilling to be performed on the workpiece. Specifically, the tip tool T is pressed against the workpiece to perform drilling.

[0041] Furthermore, when the motor 34 is driven, the fan 37 rotates together with the output shaft 34A of the motor 34. This generates an airflow AR that flows into the housing 20 from the intake port 22A. The airflow AR passes upward along the side of the controller 32, rises upward inside the motor 34, and flows out to the outside of the housing 20 from the exhaust port 22B.

[0042] Furthermore, the controller 32 detects the orientation of the hammer drill 10 based on the output signal from the tilt sensor and illuminates the LED 64 according to the orientation of the hammer drill 10. As a result, the light emitted by the LED 64 is projected from the lens body 56, allowing the operator to perform drilling work while being aware of the orientation of the hammer drill 10.

[0043] Here, the lens 52 of the display unit 50 is provided in the main housing 22, and the lens body portion 56 of the lens 52 is exposed from exposed portions 22D formed on the left and right sides of the main housing 22. Furthermore, the position of the lens body portion 56 of the display unit 50 in the vertical direction is set to overlap with the trigger 30, and is exposed so as to be visible when viewed from the rear. That is, the lens body portion 56 located in front of the trigger 30 is exposed so as to be visible to the left and right outside of the trigger 30 when viewed from the rear. As a result, the position of the hammer drill 10 can be confirmed by the light emitted from the lens body portion 56, and drilling can be performed with the hammer drill 10. Therefore, the workability of the hammer drill 10 can be improved.

[0044] In other words, as described above, when drilling with the hammer drill 10, the operator positioned behind the hammer drill 10 grasps the gripping part 24A of the hammer drill 10 and pulls the trigger 30 to operate it. At this time, the operator's line of sight moves towards the trigger 30 of the hammer drill 10, so the display content of the lens body 56, which is visible from the rear and exposed to the left and right outwards of the trigger 30, can be easily recognized. Therefore, the workability of the hammer drill 10 can be improved.

[0045] Furthermore, the position of the display unit 50 (lens body 56) in the vertical direction is set to overlap with the tip tool T. That is, the trigger 30, the display unit 50, and the tip tool T are arranged in a line in the front-to-back direction, with this order from the front. Therefore, for example, when setting the tip tool T toward the workpiece while alternately viewing the tip tool T and the lens body 56, the movement of the operator's gaze can be reduced. This further improves the workability of the hammer drill 10.

[0046] Furthermore, when viewed from the rear, the lens body 56 of the display unit 50 is positioned on both sides in the left-right direction relative to the handle housing 24. This allows the operator to recognize the posture of the hammer drill 10 by viewing one of the lens body 56 on the left or right side of the operator, depending on the operator's posture. This effectively improves the workability of the hammer drill 10.

[0047] Furthermore, the lens body 56 of the display unit 50 is positioned close to the upper side of the exhaust port 22B of the main housing 22. This allows the airflow AR exhausted from the exhaust port 22B to flow around the lens body 56. Therefore, by utilizing the airflow AR used to cool the controller 32 and motor 34, it is possible to suppress the adhesion of foreign matter to the lens body 56.

[0048] Furthermore, a lens protection portion 22E is formed on the outer periphery of the main housing 22 between the lens body portion 56 of the display unit 50 and the exhaust port 22B. The lens protection portion 22E covers the lower end of the lens body portion 56 from the left and right outward and rearward, and is located further outward than the lens body portion 56. Therefore, even if the left and right sides of the hammer drill 10 are placed on the ground, for example, contact between the lens body portion 56 and the ground can be suppressed. This improves the protective performance of the display unit 50 that is exposed to the outside.

[0049] Furthermore, the display unit 50 is composed of a lens 52 extending in the left-right direction, a substrate 62 held by the lens body portion 56 which is the longitudinal end of the lens 52, and an LED 64 mounted on the substrate 62. This allows the display unit 50, which is exposed from both the left and right sides of the main housing 22, to be assembled into the main housing 22 as a single unit. Therefore, the workability when assembling the display unit 50 into the main housing 22 can be improved.

[0050] Furthermore, in the lens 52, a pair of left and right lens body sections 56 are connected by a lens connecting section 54 that extends in the left-right direction, and are positioned on the left-right outer side of the dynamic vibration absorber 48 housed in the main body housing 22. In other words, the dynamic vibration absorber 48 is positioned between the pair of left and right lens body sections 56. This contributes to reducing the size of the main body housing 22 in the front-rear direction.

[0051] Furthermore, the handle housing 24 is connected to the main body housing 22 so as to be movable relative to it in the front-rear direction. In addition, a gap 20A is formed on the outer circumference of the housing 20 to allow the handle housing 24 to move relative to the main body housing 22, and the lens body 56 of the lens 52 is exposed from above by a second gap 20A2 of the gap 20A. In this way, the lens body 56 can be exposed from above so as to be visible by utilizing the gap 20A that allows the handle housing 24 to move relative to the main body housing 22.

[0052] In this embodiment, the display unit 50 is configured to notify the attitude state of the hammer drill 10, but the information that the display unit 50 notifies is not limited to this. For example, the display unit 50 may be configured to notify abnormal conditions of the hammer drill 10. [Explanation of Symbols]

[0053] 10. Hammer drill (working tool) 20A gap 22 Main Housing 22A Intake 22B Exhaust port 22E Lens protection part (display protection part) 24 Handle Housing 24A Grip 30. Trigger (operating part) 34. Motor (drive unit) 37 Fans 40 Transmission mechanism 48. Dynamic vibration absorber (inner component) 50 Display section 52 lenses 54 Lens connection section 56 Lens body 62 circuit boards 64 LED (light source) T Tip tool

Claims

1. The drive unit and The main housing that houses the aforementioned drive unit, A tip tool extending from the main housing toward one side in the first direction and operated by the driving force of the drive unit, A handle housing having a gripping portion provided on the other side of the first direction relative to the main body housing and extending in a second direction perpendicular to the first direction, and an operating portion that can be operated by an operator to switch between driving and stopping the drive unit, A work machine equipped with, A display unit is provided on the main body housing, exposed from the outer periphery of the main body housing in the third direction, with the third direction being perpendicular to the first and second directions, and its position in the second direction is set to overlap with the operating unit, and is exposed so as to be visible when viewed from the other side of the first direction, and displays information on the posture state of the work machine. The main housing contains a fan that operates to generate airflow when driven by the drive unit. The main housing has an intake port for allowing the airflow to flow into the interior of the main housing, and an exhaust port for allowing the airflow to flow out of the main housing. A work machine in which the display unit is located on one side of the exhaust port in the second direction.

2. The work machine according to claim 1, wherein the position of the display unit in the second direction is set to overlap with the tip tool.

3. The work machine according to claim 1, wherein, when viewed from the other side of the first direction, the display unit is arranged on both sides of the handle housing in the third direction.

4. The work machine according to claim 1, wherein a display protection portion is formed on the outer periphery of the main body housing between the display portion and the exhaust port, and at least a part of the display protection portion is located outward from the display portion in the third direction.

5. The drive unit and The main housing that houses the aforementioned drive unit, A tip tool extending from the main housing toward one side in the first direction and operated by the driving force of the drive unit, A handle housing having a gripping portion provided on the other side of the first direction relative to the main body housing and extending in a second direction perpendicular to the first direction, and an operating portion that can be operated by an operator to switch between driving and stopping the drive unit, A work machine equipped with, A display unit is provided on the main body housing, exposed from the outer periphery of the main body housing in the third direction, with the third direction being perpendicular to the first and second directions, and its position in the second direction is set to overlap with the operating unit, and is exposed so as to be visible when viewed from the other side of the first direction, and displays information on the posture state of the work machine. The aforementioned display unit is A lens having a lens body portion that extends in the third direction, is housed in the main body housing, and has lens body portions exposed to the outside of the main body housing at both ends in the longitudinal direction, A pair of substrates held in the lens body, A light source mounted on each of the pair of substrates, A work machine that includes the following components.

6. The aforementioned lens is, The lens connecting portion extending in the third direction, The lens body portion is connected to both longitudinal ends of the lens connecting portion, protrudes from the lens connecting portion toward one side in the first direction, and is arranged on both sides in the third direction of the inner member housed in the main body housing, The work machine according to claim 5, which is configured to include the above.

7. The main body housing contains a transmission mechanism that transmits the driving force of the drive unit to the tip tool. The work machine according to claim 6, wherein the inner member is a dynamic vibration absorber that absorbs vibrations generated when the transmission mechanism operates.

8. The drive unit and The main housing that houses the aforementioned drive unit, A tip tool extending from the main housing toward one side in the first direction and operated by the driving force of the drive unit, A handle housing having a gripping portion provided on the other side of the first direction relative to the main body housing and extending in a second direction perpendicular to the first direction, and an operating portion that can be operated by an operator to switch between driving and stopping the drive unit, A work machine equipped with, A display unit is provided on the main body housing, exposed from the outer periphery of the main body housing in the third direction, with the third direction being perpendicular to the first and second directions, and its position in the second direction is set to overlap with the operating unit, and is exposed so as to be visible when viewed from the other side of the first direction, and displays information on the posture state of the work machine. A work machine having a groove-shaped gap between the main body housing and the handle housing that extends in the second direction and is open to one side in the second direction, and the display unit is positioned on the other side of the gap in the second direction so as to overlap with the gap in the second direction, and is exposed so as to be visible from one side in the second direction through the gap.

9. The handle housing is connected to the main body housing so as to be movable relative to it in the first direction. The work machine according to claim 8, wherein the size of the gap in the first direction changes when the handle housing moves relative to the main body housing.

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