Driving tool

Abstract

The invention provides a driving tool. The driving tool (1) is provided with a tool main body (10), and the tool main body (10) is provided with a driving device (15) which moves downwards to hit a driving piece (N). A driving tool (1) is provided with a grip (4) extending rearward from a tool body (10). The driving tool (1) is provided with a battery mounting part (6) which is arranged at the rear part of the grab handle (4) and can be used for mounting a battery (7). The driving tool (1) has a motor housing (11a) that extends rearward from the tool body (10) below the grip (4) and accommodates an electric motor (20) that moves the driver (15). The driving tool (1) is provided with a controller (8), and the controller (8) is arranged below the electric motor (20) and controls the operation of the electric motor (20). Consequently, the configuration of the controller can be made compact and the overall controller can be made compact.

Description

Technical Field

[0001] The invention relates to a driving tool for driving a driven piece into a driven material. Background Art

[0002] Patent documents 1 and 2 disclose a gas spring type driving tool that uses the thrust of compressed gas as a driving force. The driving tool has a driver that strikes a driven object, a lifting mechanism that returns the driver to a standby position, and an electric motor that serves as a driving source for the lifting mechanism. The driver, the lifting mechanism, and the electric motor are installed inside a tool body of the driving tool. The driving tool has a driver head, a handle, and a nail magazine, wherein the driver head ejects the driven object at the lower part of the tool body; the handle extends laterally from the tool body; and the nail magazine is used to accommodate a plurality of driven objects. The nail magazine extends from the driver head in a direction roughly in which the handle extends.

[0003] As described in Patent Documents 1 and 2, a battery for supplying power to an electric motor is installed in the driving tool. The battery mounting portion is provided at the top end of the handle. A flat controller is accommodated inside the battery mounting portion along the upper surface of the battery. The controller controls the operation of the electric motor, for example. In the configuration of the controller in the prior art, it is difficult to make the driving tool more compact in the extension direction (front-rear direction) of the handle. [Prior art literature] [Patent Document]

[0004] Patent Document 1: Japanese Patent Publication No. 2023-64270 Patent Document 2: International Publication No. 2018 / 198670 Summary of the invention [Technical problem to be solved by the invention]

[0005] Therefore, there is a need for a driving tool that can achieve compactness in the arrangement of a controller and thus make the entire tool compact. [Technical solutions for solving technical problems]

[0006] According to one feature of the present invention, the driving tool has a tool body having a driving tool that moves downward to strike the driven object. The driving tool has a handle extending rearward from the tool body. The driving tool has a battery mounting portion that is arranged at the rear of the handle and can mount a battery. The driving tool has a motor housing that extends rearward from the tool body below the handle and accommodates an electric motor that moves the driving tool. The driving tool has a controller that is arranged below the electric motor and controls the operation of the electric motor.

[0007] Therefore, the controller is arranged at a position below the electric motor arranged below the battery mounting portion. According to this, compared with the structure in which the controller is arranged along the mounting surface of the battery mounted on the battery mounting portion as in the prior art, the periphery of the battery mounting portion can be made compact. Furthermore, the controller can be compactly arranged along the lower part of the electric motor. In this way, the entire driving tool can be made compact in the front-rear direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a right side view of the driving tool involved in the first embodiment with the right housing removed. Figure 2 This is a longitudinal sectional view of the driving tool when the driver is in the standby position as viewed from the right side. Figure 3 This is a longitudinal cross-sectional view of the driving tool after the driver performs the driving action, as viewed from the right side. Figure 4 yes Figure 2 IV-IV section view in FIG. Figure 5 yes Figure 3 VV section view in. Figure 6 This is a front view of the lower part of the tool body. Figure 7 It is the left side view of the driving tool. Figure 8 It is a three-dimensional view of the driving tool with the right shell, magazine and battery removed. Fig. 9 It is a right side view of the driving tool involved in the second embodiment with the right housing removed. [Explanation of Reference Numerals] 1: driving tool; 2: driving head (head, contact arm); 2a: ejection port; 3: driving passage; 4: grip; 5: trigger; 5a: trigger switch; 6: battery mounting portion; 6a: lower portion; 7: battery; 7a: mounting surface; 7b: rear surface; 8: controller; 8a: upper surface (long side); 8b: lower surface (long side); 8c: front surface; 8d: rear surface; 9: elastic member; 10: tool body; 11: body housing; 11a: motor housing; 11b: gear housing; 11c: lifter housing; 11d: window; 11e: nail magazine support portion; 12: cylinder; 13: pressure storage chamber; 13a: air chamber; 14: piston; 15: driver; 15a: rack teeth (engaged portion); 15b: top; 16: buffer; 17: driver guide; 2 0: electric motor; 21: planetary reduction mechanism; 22: lifting mechanism; 23: wheel; 24: engaging part; 24a: final engaging part; 30: nail magazine; 30a: lower surface; 30b: rear surface; 30c: side surface; 30d: upper opening; 31: nail magazine cover; 32: push rod; 33: spring; 34: contact plate; 34a: spring receiving part; 34b: compression spring; 35: regulator; 35a: rotating shaft; 35b: compression spring; 36: leaf spring; 36a: first piece; 36b: second piece; 37: switch; 37a: protruding pin; 40: driving tool; 41: battery installation part; 41a: lower part; C1: lower position; C2: upper position; L: protruding length (of the machine head); D: diameter (of the machine head); N: driving piece; W: driven material. DETAILED DESCRIPTION

[0009] According to another feature of the present invention, the long sides of the box-shaped controller extend in the front-rear direction. Therefore, the arrangement of the controller can suppress the driving tool from being enlarged in the vertical direction and can make the driving tool compact in the front-rear direction.

[0010] According to another feature of the present invention, an elastic component is sandwiched between one or both of the upper and lower surfaces of the controller and the motor housing. Therefore, the elastic component can protect the controller from, for example, an impact during a driving action or an impact caused by a reaction force just after driving. During a driving action or just after driving, a reaction force is generated that causes the tool body to move upward relative to the controller that is intended to remain in that place. Therefore, the impact is mainly transmitted from the lower surface side of the controller. By sandwiching an elastic component on the lower surface side of the controller, the impact transmitted to the controller can be more efficiently suppressed.

[0011] According to another feature of the present invention, the driving tool has a nail box, which is used to accommodate the driving piece and extends backward from the lower part of the tool body. A controller is arranged between the nail box and the electric motor. Therefore, the controller can be arranged in the space between the nail box and the upper and lower parts of the electric motor. Accordingly, the periphery of the battery installation part can be made compact.

[0012] According to another feature of the present invention, the rear surface of the nail magazine is located in the same plane as or in front of the rear surface of the battery installed in the battery installation portion. Therefore, the periphery of the battery installed in the battery installation portion can be made compact in the front-to-back direction. For example, even if the battery protrudes backwards than the rear surface of the nail magazine, the controller is not provided around the battery installation portion. Therefore, it is possible to achieve compactness in the front-to-back direction by suppressing the protrusion amount of the battery.

[0013] According to another feature of the present invention, the driving tool has a head portion, which is disposed at the lower part of the tool body in a manner that can move up and down, and has an ejection port for the driven piece. When the head portion is in the upper position, it protrudes downward from the nail magazine by more than 40 mm. Therefore, for example, when driving the driven piece into the bottom of the groove, the longer head portion can be inserted into the groove. Therefore, the operability of the driving tool can be improved.

[0014] According to another feature of the present invention, the width of the head portion in at least one direction is less than 15 mm. Therefore, when, for example, a driven part is driven into the bottom of a narrow groove, the head portion with a smaller width can be inserted into the groove. Therefore, the operability of the driving tool can be improved.

[0015] According to another feature of the present invention, the driving tool has a nail magazine support portion, which extends from the motor housing along the side surface of the nail magazine. Therefore, the side surface of the nail magazine can be supported by the nail magazine support portion. Accordingly, a long front and rear nail magazine can be supported in a stable state.

[0016] According to another feature of the present invention, the rear surface of the battery installed in the battery installation part is inclined forward and upward. Therefore, by arranging the controller below the electric motor, the freedom of the battery installation part can be improved. Therefore, for example, when the rear surface of the battery is grounded and the front lower part of the machine head is placed toward the top side, the rear end of the nail magazine can be prevented from interfering with the grounding surface. Accordingly, the operability of the driving tool can be improved.

[0017] According to another feature of the present invention, a piston is provided in the tool body, and the piston moves downward integrally with the driver by the gas pressure in the cylinder. A lifting mechanism is provided in the tool body to move the driver upward to increase the gas pressure. Therefore, the controller can be compactly arranged in the so-called gas spring type driver.

[0018] Next, according to Figures 1 to 8 The first embodiment of the present invention is described. As an example of the driving tool 1, a gas spring type driving tool that uses the gas pressure of the pressure storage chamber as the thrust for driving the driven part is described. In the following description, the driving direction of the driven part is set as downward, and the opposite direction of the driving direction is set as upward. The user of the driving tool 1 Figure 1 The center is approximately located on the left side of the driving tool 1. The user's near side is set as the rear, and the back side opposite to the near side is set as the front. Regarding the left and right directions, the user is used as a reference.

[0019] like Figure 1 to Figure 3 As shown, the driving tool 1 has a tool body 10. The tool body 10 has a structure in which a cylinder 12 is housed in a substantially cylindrical main body housing 11. A piston 14 is housed in the cylinder 12 so as to be able to reciprocate up and down. The upper portion of the cylinder 12 located above the piston 14 is connected to a pressure storage chamber 13. A compressed gas such as air is sealed in the pressure storage chamber 13. The gas pressure of the pressure storage chamber 13 acts as a thrust force that applies force to the upper surface of the piston 14 to move it downward.

[0020] like Figure 4 , Figure 5 As shown in the figure, the right part of the pressure accumulation chamber 13 is connected to an air chamber 13a extending downward. The air chamber 13a extends downward along the right side of the cylinder 12. The air chamber 13a is arranged above the lifting mechanism in a manner overlapping with the lifting mechanism 22 described later in the left-right direction. By arranging the air chamber 13a on the right side of the cylinder 12, the capacity of the pressure accumulation chamber 13 including the air chamber 13a can be increased while suppressing the enlargement of the tool body 10 in the vertical direction.

[0021] like Figure 1 to Figure 5 As shown, a driver guide 17 is provided at the lower part of the tool body 10. A driver head 2 that contacts the material W to be driven is provided at the lower part of the driver guide 17. The driver head 2 is provided in a substantially cylindrical shape extending in the up-down direction. The driver head 2 can move in the up-down direction between a lower position C1 and an upper position C2 relative to the driver guide 17. The driver head 2 also serves as a contact arm that detects contact with the material W to be driven. The driver guide 17 and the driver head 2 work together to form a driving passage 3. The driving passage 3 is formed by the inner circumferential surface of the driver guide 17 and the inner circumferential surface of the driver head 2 as a passage that extends straight in the up-down direction. The upper end of the driving passage 3 on the driver guide 17 side is connected to the lower part of the cylinder 12.

[0022] like Figure 1 to Figure 3As shown, a nail box 30 is connected to the rear part of the driver guide 17. The nail box 30 extends straightly to the rear from the driver guide 17 and is set to a roughly rectangular box shape. A plurality of driving members N extending in the up-down direction and arranged in the front-to-back direction are loaded in the nail box 30. In the present embodiment, the driving members N are, for example, nails driven into a driven material W made of concrete. The plurality of driving members N are connected by, for example, a resin connecting member in a state of being arranged in the front-to-back direction. The driving members N are supplied one by one from the nail box 30 toward the driving passage 3 to the front. In addition, the figure shows a state in which the last driving member N in the nail box 30 is supplied to the driving passage 3 or driven into the driven material W. The illustration is omitted regarding the situation in which the driving members N remain in the nail box 30.

[0023] like Figure 1 to Figure 3 As shown, a handle 4 for the user to hold is provided extending backward at the rear of the tool body 10. A trigger 5 for the user to pull with a fingertip is provided on the front lower surface of the handle 4. A trigger switch 5a is provided inside the handle 4, and the trigger switch 5a switches from an off state to an on state in response to the pulling operation of the trigger 5. When the driver head 2 is pressed against the material W to be driven and moves from the lower position C1 to the upper position C2, the pulling operation of the trigger 5 is effective.

[0024] like Figure 1 to Figure 3 As shown, a battery mounting portion 6 extending in the up-down direction is provided on the rear surface of the handle 4. A battery 7 can be detachably mounted on the battery mounting portion 6. The battery 7 can be used by being removed from the battery mounting portion 6 and repeatedly charged with a charger prepared separately. The battery 7 can be used as a power source for other electric tools. The battery 7 supplies power to the electric motor 20 described later, etc. The mounting surface 7a of the battery 7 mounted on the battery mounting portion 6 extends in the up-down direction approximately parallel to the driving direction. The battery mounting portion 6 has a lower portion 6a extending rearward below the battery 7. The lower portion 6a faces the lower surface of the battery 7. The rear surface 7b of the battery 7 and the rear surface of the lower portion 6a are arranged up and down on approximately the same plane. The rear surface 30b of the nail magazine 30 is approximately on the same plane as the rear surface 7b of the battery 7 and the rear surface of the lower portion 6a, and at least does not protrude rearwardly than the rear surface 7b.

[0025] like Figure 1 to Figure 3 As shown, the main body housing 11 has a substantially cylindrical motor housing 11a, which extends in the front-to-back direction above the nail magazine 30 and below the grip 4. The rear portion of the motor housing 11a is connected to the lower portion of the battery mounting portion 6. A substantially cylindrical gear housing 11b having substantially the same diameter as the motor housing 11a is provided in front of the motor housing 11a. A substantially cylindrical lifter housing 11c (see FIG. 1 ) is provided in front of the gear housing 11b. Figure 4). The motor housing 11a, the gear housing 11b and the lifter housing 11c are integrally provided and formed into a substantially cylindrical shape extending rearward from the tool body 10. The front end of the gear housing 11b is connected to the front part of the main body housing 11. Therefore, the grip 4, the battery mounting portion 6, the motor housing 11a and the gear housing 11b cooperate to form a ring shape.

[0026] like Figure 4 , Figure 5 As shown, a driver 15 which is longer vertically is connected to the lower surface of the piston 14. The lower part of the driver 15 enters the driving passage 3. The driver 15 moves downward due to the air pressure of the pressure storage chamber 13 acting on the upper surface of the piston 14. The top end 15b located at the lower end of the driver 15 strikes the head of a driving member N supplied to the driving passage 3 when moving to the driving position. The struck driving member N moves downward in the driving passage 3 and is ejected from the ejection port 2a at the lower end of the driver head 2. The ejected driving member N is driven into the driven material W. A roughly cylindrical buffer 16 is provided on the lower side of the cylinder 12, and the buffer 16 is used to absorb the impact at the bottom dead center of the piston 14.

[0027] like Figure 4 , Figure 5 As shown, a plurality of rack teeth (engaged portions) 15a protruding to the right are provided on the right side of the driver 15. In the present embodiment, eight rack teeth 15a are arranged in the longitudinal direction of the driver 15, i.e., in the vertical direction. Each rack tooth 15a is provided in a generally triangular shape with the bottom facing the driving direction, i.e., downward, when viewed from the front. The bottom of the rack teeth 15a engages with the engaging portion 24 of the lifting mechanism 22 described later. The distance in the vertical direction from the bottom of the rack teeth 15a at the lowest end to the top 15b of the driver 15 is at least 75 mm or more, for example, 75 to 90 mm.

[0028] like Figure 1 to Figure 3 As shown, an electric motor 20 as a driving source is accommodated in the motor housing 11a. The electric motor 20 is accommodated in a posture where the motor axis extends in the front-to-back direction. The electric motor 20 uses the battery 7 as a power source and is started by the movement of the driver head 2 and the operation of the trigger 5. A planetary reduction mechanism 21 accommodated in the gear housing 11b is provided in front of the electric motor 20. The planetary reduction mechanism 21 uses a three-row planetary gear system. A lifting mechanism 22 accommodated in the lifter housing 11c is provided in front of the planetary reduction mechanism 21. The lifting mechanism 22 causes the driver 15 and the piston 14 to move upward against the air pressure of the pressure storage chamber 13. The electric motor 20, the planetary reduction mechanism 21 and the lifting mechanism 22 are arranged on the motor axis. The rotational drive of the electric motor 20 is decelerated by the planetary reduction mechanism 21 and transmitted to the lifting mechanism 22.

[0029] like Figure 4 , Figure 5 As shown, the lifting mechanism 22 is arranged on the right side of the driver head 2. The lifting mechanism 22 has a wheel 23 that can rotate around an axis extending in the front-to-back direction. The wheel 23 can rotate in the counterclockwise direction when viewed from the front, and the rotation in the clockwise direction is restricted. A plurality of engaging portions 24 are provided along the outer peripheral edge of the wheel 23. In the present embodiment, for example, 8 engaging portions 24 are arranged at intervals in the circumferential direction of the wheel 23. The engaging portions 24 use a cylindrical shaft component (pin) extending in the front-to-back direction. As the wheel 23 rotates, each engaging portion 24 moves around the rotation center of the wheel 23.

[0030] like Figure 4 , Figure 5 As shown in FIG. 1 , the left portion of the wheel 23 enters the driving passage 3 of the driver guide 17 through the window portion 11d provided on the left portion of the lifter housing 11c. Each engaging portion 24 of the wheel 23 engages with the bottom of the rack teeth 15a of the driver 15 in the driving passage 3. When at least one of the engaging portions 24 engages with the bottom of any rack teeth 15a, the wheel 23 rotates counterclockwise. Accordingly, the driver 15 and the piston 14 move upward. As the piston 14 moves upward, the air pressure of the pressure accumulator chamber 13 increases.

[0031] like Figure 1 to Figure 3 , Figure 7 As shown, the rectangular box-shaped nail magazine 30 has a lower surface 30a extending straightly in the front-to-back direction. The nail magazine 30 has a rear surface 30b extending straightly in the up-down direction. A nail magazine cover 31 constituting the rear surface 30b is provided at the rear portion of the nail magazine 30. The nail magazine 30 has side surfaces 30c extending in the front-to-back direction and the up-down direction at the left and right sides, respectively.

[0032] like Figure 1 to Figure 3 , Figure 7 As shown, the front end of the nail magazine 30 is connected to the rear portion of the driver guide 17. The interior of the nail magazine 30 is opened through the upper opening 30d (see Figure 4 ) is connected to the driving passage 3 of the driver guide 17. A push rod 32 for supplying the driving member N to the driving passage 3 is provided inside the nail magazine 30. The push rod 32 is provided in a flat plate shape extending in the up-down direction and the front-back direction. The push rod 32 is urged forward by a spring spring 33. The spring spring 33 is accommodated in a spring accommodation portion provided on a side surface 30c on the left side of the nail magazine 30. The front surface of the push rod 32 pushes the driving member N accommodated in the front toward the driving passage 3. Accordingly, the driving members N are supplied to the driving passage 3 one by one.

[0033] like Figure 1 to Figure 6As shown, the driver head 2 protrudes downward from the lower part of the driver guide 17. The driver head 2 protrudes downward from the lower surface 30a of the nail magazine 30 at the upper position C2 by a protruding length L. The protruding length L is at least 40 mm or more, for example, 40 to 55 mm. Corresponding to the portion where the driver head 2 is set longer, the standby position of the driver 15 is located below. By ensuring the protruding length L of the driver head 2 protruding at the upper position C2, for example, the driver N can be driven into the bottom of the groove formed in the material W to be driven. The diameter D of the driver head 2 is less than 15 mm, for example, 12 mm. The diameter D is the width of the driver head 2 in the direction perpendicular to the up and down direction. By setting the driver head 2 with a thinner width, for example, the driver N can be driven into the bottom of the thinner groove formed in the material W to be driven.

[0034] like Figure 6 As shown in FIG. 1 , the upper portion of the driver head 2 is integrally provided with a contact plate 34. The contact plate 34 is supported by the driver guide 17 in a manner that allows sliding in the up-down direction. The contact plate 34 has a spring receiving portion 34a protruding forward. The spring receiving portion 34a is urged downward by a compression spring 34b supported by the main body housing 11. The driver head 2 is urged to the downward position C1 together with the contact plate 34 by the urging force of the compression spring 34b.

[0035] like Figure 1 , Figure 6 As shown, a dial-type adjuster 35 is provided in front of the contact plate 34. The adjuster 35 has a rotating shaft 35a extending in the up-down direction. The rotating shaft 35a is supported by the main body housing 11 in a manner that it can rotate and move in the up-down direction. The contact plate 34 is connected to the rotating shaft 35a and can move in the up-down direction. By rotating the adjuster 35, the up-down position of the contact plate 34 and the driving machine head 2 can be adjusted. The adjuster 35 has a compression spring 35b arranged on the outer peripheral side of the rotating shaft 35a and supported by the main body housing 11. The compression spring 35b applies force to the adjuster 35 downward.

[0036] like Figure 1 to Figure 3 As shown, the driving tool 1 has a switch 37 for detecting the up and down movement of the driving machine head 2. The switch 37 has a protruding pin 37a protruding downward from the rectangular box-shaped switch body. A U-shaped leaf spring 36 is provided between the protruding pin 37a and the upper end of the rotating shaft 35a of the regulator 35. The U-shaped leaf spring 36 is provided in a shape in which the first piece 36a on the lower side and the second piece 36b on the upper side are connected by a U-shaped bending portion. The U-shaped leaf spring 36 is supported by the main body housing 11 in a manner that can rotate in the up and down direction through the bending portion. The first piece 36a abuts against the upper end of the rotating shaft 35a. The second piece 36b abuts against the protruding pin 37a.

[0037] like Figure 1 to Figure 3 As shown in FIG. 1 , when the driver head 2 moves to the upper position C2, the rotating shaft 35a of the adjuster 35 is moved via the contact plate 34 (see FIG. 1 ). Figure 6 ) also moves upward. The U-shaped leaf spring 36 is rotated upward by being pressed by the upper end of the rotating shaft 35a through the first piece 36a. Accordingly, the second piece 36b presses the protruding pin 37a to turn the switch 37 into an on state. On the other hand, when the driver head 2 is located at the lower position C1, the rotating shaft 35a is also located at the bottom. The U-shaped leaf spring 36 is in a state where it is not pressed by the rotating shaft 35a. Therefore, the second piece 36b does not press the protruding pin 37a upward, and the switch 37 is turned into an off state. In this way, the switch 37 sends an on signal to the controller 8 only when the driver head 2 moves to the upper position C2. When the on signal is sent to the controller 8, the pulling operation of the trigger 5 becomes effective.

[0038] like Figure 1 to Figure 3 As shown, the driving tool 1 has a controller 8 that mainly controls the drive of the electric motor 20. The controller 8 is provided by accommodating a control substrate in a shallow rectangular box-shaped housing. The controller 8 is provided below the motor housing 11a that accommodates the electric motor 20 and above the nail magazine 30 in the vertical direction. The controller 8 is accommodated in the motor housing 11a and the gear housing 11b below the electric motor 20. Between the electric motor 20 and the nail magazine 30 in the vertical direction, a space is formed by making the driving machine head 2 protrude downward longer and setting the standby position of the driving device 15 to be closer to the bottom. The controller 8 is arranged in this space.

[0039] like Figure 1 to Figure 3 , Figure 8 As shown, the controller 8 is configured in a posture in which the longest side is in the front-to-back direction and the shortest side in the thickness direction is in the up-down direction. The controller 8 is configured in a posture in which the upper surface (long side) 8a and the lower surface (long side) 8b are along the motor axis direction of the electric motor 20, that is, the front-to-back direction. Between the upper surface 8a of the controller and the upper surface of the motor housing 11a in the up-down direction, a space is provided below the electric motor 20. A space is also provided between the lower surface 8b of the controller 8 and the lower surface of the main body housing 11. The elastic component 9 can be sandwiched in the upper and lower spaces of the controller 8. The elastic component 9 is made of rubber, for example. The elastic component 9 can, for example, suppress the impact caused by the reaction force during the driving action and just after the driving is transmitted to the controller 8.

[0040] like Figure 1 to Figure 3 , Figure 8As shown, the front surface 8c of the controller 8 is arranged in a position parallel to the planetary reduction mechanism 21 in the front-to-back direction. The rear surface 8d of the controller 8 is arranged at a position farther rearward than the electric motor 20. A rib-shaped nail magazine support portion 11e extending downward from the storage portion of the controller 8 is provided on the left side surface of the main body shell 11. The nail magazine support portion 11e is provided below the motor housing 11a and the gear housing 11b. The nail magazine support portion 11e extends relatively long in the front-to-back direction along the lower surfaces of the motor housing 11a and the gear housing 11b. The lower surface of the main body shell 11 abuts against the upper surface of the nail magazine 30. The right side surface of the nail magazine support portion 11e abuts against the left side surface 30c of the nail magazine 30 (refer to Figure 7 ). Therefore, the nail magazine 30 stabilizes its posture by positioning the upper surface and the side surface 30c by the main body housing 11.

[0041] Next, refer to Figure 2 to Figure 5 A series of flows of the driving operation of the driving tool 1 will be described. Figure 2 , Figure 4 This shows the standby state of the driver 15. Figure 3 , Figure 5 The state of the driver 15 just after driving is shown when it moves to the lower dead point. The driver 15 in the standby state stops at a standby position slightly below the upper dead point. When the driver 15 is in the standby position, the bottom surface of the rack teeth 15a at the lower end is engaged with the final engagement portion 24a of the lifting mechanism 22. When the driver 15 is in the standby position, the top end 15b of the driver 15 overlaps with the head of the frontmost driving piece N in the nail magazine 30 in the vertical direction. Therefore, the driving piece N has not yet been supplied to the driving passage 3.

[0042] When the lower end of the driver head 2 is pressed against the material W to be driven, the driver head 2 moves from the lower position C1 to the upper position C2. The rotating shaft 35a of the regulator 35 moves upward in conjunction with the driver head 2. The switch 37 is turned on by pressing the protruding pin 37a via the U-shaped leaf spring 36. The controller 8 starts the electric motor 20 by receiving an electrical signal indicating that the switch 37 is turned on and pulling the trigger 5. When the electric motor 20 is started, the wheel 23 of the lifting mechanism 22 rotates. The final engaging portion 24a causes the rack teeth 15a at the lower end to move upward. Accordingly, the driver 15 moves upward from the standby position to the top dead center.

[0043] When the state just before driving is reached at the top dead center, the final engaging portion 24a disengages from the bottom of the rack teeth 15a at the lowest end. Accordingly, the driver 15 is moved downward by the air pressure applied to the pressure storage chamber 13 of the piston 14. During the period when the driver 15 moves upward from the standby position to the top dead center, a driving member N at the front end is supplied to the driving passage 3 from the nail magazine 30. The top end 15b of the driver 15 moves downward in the driving passage 3 and strikes the head of a driving member N. When the driver 15 moves downward, all the engaging portions 24 retreat to a position to the right of the driving passage 3. Therefore, the interference between the rack teeth 15a of the driver 15 moving downward and the engaging portions 24 is avoided, so that a smooth driving action is performed.

[0044] The wheel 23 continues to rotate during the downward movement of the driver 15 and after reaching the bottom dead center. When the driver 15 reaches the bottom dead center, if the wheel 23 rotates to a specified rotation angle, one of the engaging portions 24 engages with the bottom of the uppermost rack teeth 15a. Accordingly, the return action of moving the driver 15 upward begins. When the final engaging portion 24a engages with the bottom of the lowermost rack teeth 15a, the driver 15 returns to the standby position. For example, by appropriately measuring the time from the start of the electric motor 20 or by appropriately measuring the rotation position of the wheel 23, the electric motor 20 is stopped at the stage where the piston 14 reaches the standby position. Accordingly, the driver 15 is kept in the standby position. Accordingly, a series of driving actions are completed.

[0045] As described above, the driving tool 1 includes a tool body 10 having a Figure 2 , Figure 3 The driving tool 1 has a handle 4 extending rearward from a tool body 10. The driving tool 1 has a battery mounting portion 6 provided at the rear of the handle 4 and capable of mounting a battery 7. The driving tool 1 has a motor housing 11a extending rearward from the tool body 10 below the handle 4 and accommodating an electric motor 20 for moving the driving tool 15. The driving tool 1 has a controller 8, which is arranged below the electric motor 20 and controls the operation of the electric motor 20.

[0046] Therefore, the controller 8 is arranged below the electric motor 20 arranged below the battery mounting portion 6. According to this, compared with the structure in which the controller 8 is arranged along the mounting surface 7a of the battery 7 mounted on the battery mounting portion 6 as in the prior art, for example, the periphery of the battery mounting portion 6 can be made compact. In addition, the controller 8 can be compactly arranged along the lower part of the electric motor 20. In this way, the entire driving tool 1 can be made compact in the front-rear direction.

[0047] like Figure 1 to Figure 3As shown, the upper surface 8a and the lower surface 8b of the long sides of the box-shaped controller 8 extend in the front-rear direction. Therefore, the arrangement of the controller 8 can suppress the driving tool 1 from being enlarged in the vertical direction and can make the driving tool 1 compact in the front-rear direction.

[0048] like Figure 1 to Figure 3 As shown, an elastic member 9 is sandwiched between the upper surface 8a and the lower surface 8b of the controller 8 and the motor housing 11a. Therefore, for example, the elastic member 9 can protect the controller 8 from the impact during the driving action or the impact caused by the reaction force just after the driving. During the driving action or just after the driving, a reaction force is generated to move the tool body 10 upward relative to the controller 8 that is intended to remain in the place. Therefore, the impact is mainly transmitted from the lower surface 8b side of the controller 8. By sandwiching the elastic member 9 on the lower surface 8b side of the controller 8, the impact transmitted to the controller 8 can be more efficiently suppressed.

[0049] like Figure 2 , Figure 3 As shown, the driving tool 1 has a nail box 30 that accommodates the driving piece N and extends rearward from the lower part of the tool body 10. A controller 8 is arranged between the nail box 30 and the electric motor 20. Therefore, the controller 8 can be arranged in the space between the nail box 30 and the upper and lower parts of the electric motor 20. According to this, the periphery of the battery mounting portion 6 can be made compact.

[0050] like Figure 1 to Figure 3 As shown, the rear surface 30b of the nail magazine 30 is located in the same plane or in front of the rear surface 7b of the battery 7 installed in the battery installation part 6. Therefore, the periphery of the battery 7 installed in the battery installation part 6 can be made compact in the front-to-back direction. For example, even if the battery 7 protrudes backwards than the rear surface 30b of the nail magazine 30, the controller 8 is not provided around the battery installation part 6. Therefore, the protrusion amount of the battery 7 can be suppressed, and compactness in the front-to-back direction can be achieved.

[0051] like Figure 2 , Figure 3 As shown, the driving tool 1 has a driving head 2, which is disposed at the lower part of the tool body 10 in a manner that can move up and down, and has an ejection port 2a for the driven piece N. When the driving head 2 is in the upper position, it protrudes downward from the nail magazine 30 by more than 40 mm. Therefore, for example, when driving the driven piece N into the bottom of the groove, the longer driving head 2 can be inserted into the groove. Therefore, the operability of the driving tool 1 can be improved.

[0052] like Figure 1 to Figure 3As shown, the width (diameter D) of the driver head 2 in at least one direction is less than 15 mm. Therefore, when, for example, a driven part N is driven into the bottom of a narrow groove, the driver head 2 with a smaller width can be inserted into the groove. Therefore, the operability of the driving tool 1 can be improved.

[0053] like Figure 7 As shown, the driving tool 1 has a nail magazine support portion 11e extending from the motor housing 11a along the side surface 30c of the nail magazine 30. Therefore, the side surface 30c of the nail magazine 30 can be supported by the nail magazine support portion 11e. Accordingly, the long front and rear nail magazine 30 can be supported in a stable state.

[0054] like Figure 2 , Figure 3 As shown, the tool body 10 is provided with a piston 14, and the piston 14 moves downward integrally with the driver 15 by the air pressure in the cylinder 12. The tool body 10 is provided with a lifting mechanism 22 for increasing the air pressure by moving the driver 15 upward. Therefore, in the so-called gas spring type driving tool 1, the controller 8 can be compactly arranged.

[0055] Next, according to Fig. 9 A second embodiment of the present invention will be described. The driving tool 40 of the second embodiment has a battery mounting portion 41 instead of a battery. Figure 1 The battery mounting portion 6 is shown. In the following description, only the parts different from the first embodiment will be described in detail.

[0056] like Fig. 9 As shown, the battery 7 can be installed in a detachable manner on the battery mounting portion 41. The mounting surface 7a of the battery 7 mounted on the battery mounting portion 41 is inclined relative to the driving direction. Specifically, the mounting surface 7a is inclined forward and upward, that is, inclined upward and forward. The rear surface 7b of the battery 7 is also inclined forward and upward. The battery mounting portion 41 has a lower portion 41a facing the lower surface of the battery 7. The lower portion 41a extends in a direction substantially orthogonal to the mounting surface 7a. The lower portion 41a is inclined rearward and upward. The rear surface 30b of the nail magazine 30 and the rearmost end of the rear surface 7b of the battery 7 and the rear end of the lower portion 41a are arranged up and down at substantially the same front-to-back position, and at least do not protrude to the rear of the rearmost end of the rear surface 7b.

[0057] As described above, the rear surface 7b of the battery 7 mounted on the battery mounting portion 41 is as shown in FIG. Fig. 9 As shown in the figure, the controller 8 is tilted forward and upward. Therefore, by arranging the controller 8 below the electric motor 20, the freedom of the battery mounting portion 41 can be improved. Therefore, when the rear surface 7b of the battery 7 is grounded and the front lower part of the driver head 2 is placed toward the top side, the rear end of the nail magazine 30 can be prevented from interfering with the grounding surface. Accordingly, the operability of the driving tool 40 can be improved.

[0058] Various changes can be made to the driving tools 1 and 40 of the above-described embodiments. The driving tools 1 and 40 of gas spring type are exemplified. Instead of this, for example, the present invention can also be applied to the following mechanical spring type driving tools, that is, the mechanical spring type driving tools that eject the driving tool by using the elastic force of a mechanical compression spring or the like generated when the driving tool is moved in the opposite direction of the driving direction by a lifting mechanism. For example, the present invention can also be applied to a flywheel type driving tool that ejects the driving tool by using the inertial force of a flywheel. For example, the present invention can also be applied to an electric pneumatic driving tool that uses compressed gas generated by rotating a crank by an electric motor.

[0059] A nail is exemplified as the driving tool N, but a driving tool that can shoot a U-shaped nail may be used. A concrete driven material W is exemplified as a target for the driving tool N. Instead, a driven material such as wood may be used as a target.

[0060] The example shows a structure in which the driver head 2 also serves as a contact arm. Instead of this, it can also be configured as a driver head that does not move in the vertical direction and a contact arm that is separate from the driver head and can move in the vertical direction. The example shows a cylindrical driver head 2. Instead of this, for example, the driver head can also be a rectangular cylinder, an elliptical cylinder, etc. The width of the driver head in at least one direction is 15 mm or less. For example, the width of the driver head in the front-to-back direction or the width in the left-to-right direction is 15 mm or less.

[0061] The nail magazine 30 is shown as extending straightly backward from the driver guide 17. Instead of this, for example, the nail magazine may be tilted in either direction from the driver guide 17 to the rear. The nail magazine support portion 11e along the side surface 30c on the left side of the nail magazine 30 is shown as an example. Instead of this or in addition, the nail magazine support portion along the side surface 30c on the right side of the nail magazine 30 may be provided on the main body housing 11.

[0062] The controller 8 is exemplified in which the upper surface 8a and the lower surface 8b extend straight in the front-to-back direction along the motor axis of the electric motor 20. Instead, the controller 8 may extend substantially in the front-to-back direction while being tilted up and down relative to the motor axis. Alternatively, the controller 8 may extend substantially in the front-to-back direction while being tilted left and right.

[0063] The example shows a structure in which the elastic member 9 is sandwiched between the upper surface 8a of the controller 8 and the upper surface of the motor housing 11a, and between the lower surface 8b and the lower surface of the main body housing 11. Instead of this, the elastic member 9 may be sandwiched in the space of only one side. By sandwiching the elastic member 9 in the space of both sides, the impact transmitted to the controller 8 can be further suppressed.

Claims

1. A driving tool, characterized in that: The tool has a tool body, a handle, a battery mounting portion, a motor housing and a controller, wherein: The tool body has a driver that moves downward to strike the driven object; The handle extends rearwardly from the tool body; The battery installation portion is disposed at the rear of the handle and is capable of installing a battery; The motor housing extends rearward from the tool body below the handle and accommodates an electric motor for moving the driver; The controller is disposed below the electric motor and controls the operation of the electric motor.

2. The driving tool according to claim 1, characterized in that The long sides of the box-shaped controller extend in the front-rear direction.

3. The driving tool according to claim 1 or 2, characterized in that: An elastic member is interposed between one or both of the upper surface and the lower surface of the controller and the motor housing.

4. The driving tool according to any one of claims 1 to 3, characterized in that A nail box is provided, which is used to accommodate the driving piece and extends rearward from the lower part of the tool body. The controller is arranged between the nail magazine and the electric motor.

5. The driving tool according to claim 4, characterized in that The rear surface of the nail magazine is located in the same plane as or in front of the rear surface of the battery mounted on the battery mounting portion.

6. The driving tool according to claim 4 or 5, characterized in that The machine head is provided at the lower part of the tool body in a manner that the machine head can move up and down, and has an ejection port for the driven part. When the machine head is in the upper position, it protrudes downward from the nail magazine by more than 40 mm.

7. The driving tool according to claim 6, characterized in that The width of the head portion in at least one direction is less than 15 mm.

8. The driving tool according to any one of claims 4 to 7, characterized in that A nail magazine supporting portion is provided, and the nail magazine supporting portion extends from the motor housing along the side surface of the nail magazine.

9. The driving tool according to any one of claims 1 to 8, characterized in that The rear surface of the battery mounted on the battery mounting portion is inclined forward and upward.

10. The driving tool according to any one of claims 1 to 9, characterized in that The tool body is provided with a piston and a lifting mechanism, wherein the piston moves downward integrally with the driver by air pressure in a cylinder, and the lifting mechanism moves the driver upward to increase the air pressure.

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