JP6084545B2 - Electric tool - Google Patents

Description

  The present invention relates to an electric tool for sliding and mounting a rechargeable battery as a power source.

An electric tool for mounting a rechargeable battery as a power source is known. This electric tool is supplied with electric power from the mounted rechargeable battery and is driven to rotate by a built-in electric motor. The rotational drive of the electric motor is appropriately converted to function as a desired electric tool. Such electric tools are known in which a rechargeable battery is mounted or removed by sliding (see, for example, Patent Document 1 below).
By the way, a guide groove portion is provided in the battery mounting portion for slidingly mounting the rechargeable battery. A guide male portion provided in the rechargeable battery is fitted in the guide groove portion in the sliding direction. The guide male part fitted in the guide groove part functions to guide the slide of the rechargeable battery.
On the other hand, the rechargeable battery is removed from the tool body and charged by the charger when the amount of charge decreases. Next, the rechargeable battery whose charging amount is full is mounted on the tool body again. For this reason, when such attachment and detachment of the rechargeable battery is repeated, the guide groove portion may be worn and play may occur between the guide groove portion and the guide male portion. For this reason, in order to suppress such wear of the guide groove portion, it is known to provide a reinforcing member by welding (baking caulking) to the guide groove portion.

JP 2010-240797 A

  On the other hand, in the above-described guide groove portion, there is one configured by combining two divided molded members. Such a combined guide groove portion is formed across two. For this reason, it is difficult to provide a reinforcing member by the above-described technique using welding (baking caulking), and a technique that replaces this welding has been questioned.

  The present invention has been made in view of such circumstances, and the problem to be solved by the present invention is a guide groove portion provided in a battery mounting portion in an electric tool that slides and mounts a rechargeable battery as a power source. In assembling the reinforcing member that suppresses wear of the reinforcing member, the reinforcing member can be easily and reliably assembled.

In solving the above-described problems, the power tool according to the present invention takes the following means.
That is, the power tool according to the first aspect of the present invention has a battery mounting portion that slides and mounts a rechargeable battery, and is driven by being supplied with power from the rechargeable battery mounted on the battery mounting portion. The molding member that forms the battery mounting portion is a tool formed by combining a first molding member and a second molding member that are divided before and after the sliding direction for mounting the rechargeable battery on the battery mounting portion. The battery mounting portion is provided with a guide groove portion that guides a slide for mounting the rechargeable battery by fitting a guide male portion provided in the rechargeable battery in a sliding direction, A reinforcing member that covers and covers the guide groove portion is assembled to a part of the guide groove portion where the guide male portion is in sliding contact, and the reinforcing member is assembled. The first molded member and the second molded member before being united are assembled from the facing portions of the first molded member and the second molded member toward the first molded member and the second molded member. When the first molded member and the second molded member are combined to form the battery mounting portion, the reinforcing member is assembled so as to regulate the detachment of the reinforcing member from the guide groove portion. The latching | locking part latched with respect to the given location is provided.
According to the electric tool according to the first aspect of the present invention, the reinforcing member is assembled from the location where the first molded member and the second molded member are faced to each other from the first molded member and the second molded member before being combined. Since the first molded member and the second molded member are combined, the reinforcing member can be assembled at the same time. Here, since the reinforcing member is provided with the latching portion, when the battery mounting portion is formed by combining the first molded member and the second molded member, the reinforcing member is removed from the guide groove portion. It can be restrained and hooked to the place where the reinforcing member is assembled. Accordingly, the first molded member and the second molded member can be combined to prevent the assembled reinforcing member from being detached from the assembly location. Thus, according to the electric tool of the first aspect of the present invention, the reinforcement member can be easily assembled without the need for welding, and the reinforcement member can be reliably detached from the assembly location. It is possible to prevent the reinforcement member from being assembled.

The electric power tool according to the second invention is characterized in that, in the electric power tool according to the first invention, the reinforcing member has a U-shape surrounding three directions when viewed in the sliding direction. To do. According to the electric tool of the second invention, since the reinforcing member has a U-shape surrounding the three directions when viewed in the sliding direction, the three directions intersecting the sliding direction are reinforced by the reinforcing member. I can keep it. Thus, the sliding contact surface facing in multiple directions can be efficiently reinforced with one member.
Moreover, the electric tool which concerns on 3rd invention WHEREIN: The electric tool which concerns on the said 2nd invention WHEREIN: The said latching | locking part is provided in each of the two opposing surfaces of the said U-shape of the said reinforcement member, It is characterized by. According to the electric tool of the third aspect of the present invention, the latching portions are provided on each of the two U-shaped opposing surfaces of the reinforcing member, so that the latching by the latching portions is well balanced. Can be. Thereby, the restriction | limiting of the removal of the reinforcement member by a latching part can be made into the restriction | limiting of the removal of a stronger reinforcement member.
The electric power tool according to a fourth aspect of the present invention is the electric power tool according to any one of the first to third aspects of the invention, wherein the latching portion is a united body of the first molded member and the second molded member. A guide outer edge portion is provided that guides the reinforcing member so that the reinforcing member is positioned at the assembly position by being combined with the first forming member and the second forming member while being inclined with respect to the direction. It is characterized by that. In the electric power tool according to the fourth aspect of the present invention, since the latching portion is provided with the guide outer edge portion, the reinforcing member is positioned at the assembly position by combining the first molded member and the second molded member. Thus, the reinforcing member can be guided. Thereby, the assembling work of the reinforcing member is automatically performed only by the union work of the first forming member and the second forming member. Therefore, it is possible to improve the convenience for the work of assembling the reinforcing member.
The power tool according to a fifth aspect of the present invention is the power tool according to any one of the first to fourth aspects, wherein the reinforcing member is assembled at the guide groove portion where the guide male portion starts to be fitted. It is characterized in that it is set near the insertion port end. According to the electric tool of the fifth aspect, the reinforcing member is installed near the insertion slot end of the guide groove where the guide male part starts to be fitted. It is possible to reinforce the area near the entrance end.
The electric power tool according to a sixth aspect of the present invention is the electric power tool according to any one of the first to fifth aspects, wherein the reinforcing member is formed by combining the first molded member and the second molded member. When the first molded member and the second molded member are separated by being released, the guide groove portion is configured to be detachable from the place where the guide groove portion is assembled. According to the electric tool of the sixth aspect of the invention, the reinforcing member is configured to be detachable from the place where the guide groove portion is assembled when the first molded member and the second molded member are separated. This reinforcing member can be easily replaced. Further, even when the power tool is discarded, the reinforcing member can be easily removed and discarded.
The electric power tool according to a seventh aspect of the present invention is the electric power tool according to any one of the first to sixth aspects, wherein a plurality of the battery mounting portions are provided, and the reinforcing member is the battery mounting portion. Both of the guide groove portions forming a pair provided in are assembled. According to the electric tool according to the seventh aspect of the present invention, a plurality of battery mounting portions are provided, and a plurality of rechargeable batteries can be mounted. As a result, the capacity of the power supply can be increased to enable long-term use, or the power supply voltage can be increased to enable high-power use, thereby expanding the range of use as a power tool. . Furthermore, according to the electric tool according to the seventh aspect of the invention, since both of the guide groove portions with which the reinforcing member is paired are assembled, it is possible to increase the strength with respect to both guide groove portions forming the battery mounting portion. it can. Therefore, according to the electric tool according to the seventh aspect of the present invention, it is possible to increase the strength of the battery mounting portion with respect to the attachment / detachment of the rechargeable battery while the range of use as the electric tool can be expanded.

It is a left external view which shows the left external appearance of the whole hammer drill as an electric tool. It is a lower external view which shows the lower external appearance of the hammer drill of FIG. It is a rear external view which shows the rear external appearance of the hammer drill of FIG. It is a right half sectional view showing the internal structure of a hammer drill in the right half section. It is a left half sectional view showing the internal structure of a hammer drill in the left half section. It is an expansion external view of the battery mounting part of FIG. 1 which removed the rechargeable battery. It is an expansion external view of the battery mounting part of FIG. 2 which removed the rechargeable battery. It is sectional drawing which shows the (VIII)-(VIII) cross-section arrow in FIG. It is sectional drawing which shows the (IX)-(IX) section arrow in FIG. It is sectional drawing which shows the (X)-(X) cross-section arrow in FIG. It is sectional drawing which shows the (XI)-(XI) cross-section arrow in FIG. It is a perspective view which expands and squintly shows the inside of a guide groove part from the lower side. It is a perspective view which expands the inside of a guide groove part from the upper side, and is shown. It is a perspective view which shows a main body housing and a reinforcement member in an exploded state. It is a disassembled perspective view which expands and shows regarding the attachment location of a reinforcement member. It is a front view which shows the case where a reinforcement member is assembled | attached to the left side housing. It is a front view which expands and shows the assembly | attachment location (location shown by (XVII) of FIG. 7) of the reinforcement member which united the left side housing and the right side housing. It is a perspective view which expands and shows the example of another reinforcement member. It is a perspective view which shows the case where the reinforcement member of FIG. 18 is assembled | attached to the left side housing.

Hereinafter, an embodiment for carrying out an electric tool according to the present invention will be described. The code | symbol 10 shown in FIGS. 1-5 is a hammer drill equivalent to the electric tool which concerns on this invention. The hammer drill 10 corresponds to a reciprocating tool according to the present invention and also corresponds to an impact tool according to the present invention. 1 to 3 show the appearance of the hammer drill 10 with the rechargeable battery 90 attached. Specifically, FIG. 1 is a left external view showing the overall left external appearance of the hammer drill 10, FIG. 2 is a lower external view showing the lower external appearance of the hammer drill 10, and FIG. 3 is a rear external appearance of the hammer drill 10. FIG. 4 and 5 show the internal structure of the hammer drill 10 in a half-section. Specifically, FIG. 4 is a right half sectional view showing the internal structure of the right half section of the hammer drill 10. FIG. 5 is a left half sectional view showing the internal structure of the left half section of the hammer drill 10.
In describing the hammer drill 10, in view of a normal use mode, front, rear, up, down, left and right with respect to the hammer drill 10 are defined as described in all drawings. Moreover, the hammer drill 10 is normally configured to be used while grasping a pistol. For this reason, the direction in which the workpiece is arranged is defined as the front side of the hammer drill 10, and the opposite direction is defined as the rear side of the hammer drill 10. And the direction of the left-right up-down direction is prescribed | regulated based on this front-back direction. The front-rear direction of the hammer drill 10 is a front-rear direction orthogonal to the slide direction of the rechargeable battery 90 in which the hammer bit B reciprocates. The front-rear direction of the hammer drill 10 corresponds to the first direction according to the present invention. Further, the left-right direction of the hammer drill 10 is a sliding direction (left-right direction) for mounting on the battery mounting portion 50 of the rechargeable battery 90. The left-right direction of the hammer drill 10 corresponds to the second direction according to the present invention. The vertical direction of the hammer drill 10 corresponds to the third direction according to the present invention. That is, the direction facing the battery mounting portion 50 of the rechargeable battery 90 mounted on the battery mounting portion 50 corresponds to the third direction according to the present invention.

The hammer drill 10 is configured as an electric tool to which a hammer bit B is attached as a tip tool and used for drilling work or the like. As will be described in detail later, the hammer bit B is retained on the tool holder 37 by being prevented from coming off by the chuck 38. The tool holder 37 corresponds to a tool output unit according to the present invention.
The hammer drill 10 is configured as a hand-held tool that can be held by hand, and a rechargeable battery 90 is used as a power source. That is, the hammer drill 10 roughly includes a hammer drill main body 11 as a tool main body and a rechargeable battery 90 as a power source that can be attached to and detached from the hammer drill main body 11. The hammer drill body 11 has two rechargeable batteries 90 detachable so as to be compatible with a large capacity power source. The hammer drill main body 11 to which the rechargeable battery 90 is mounted as described above incorporates an electric motor 15 that is driven by electric power supplied from the rechargeable battery 90. The electric motor 15 corresponds to a motor as a drive source according to the present invention.
As shown in FIGS. 4 and 5, the hammer drill main body 11 roughly includes a drive unit 13, a handle unit 40, and a battery mounting unit 50. The drive unit 13 includes a motor unit 14 and a reciprocating mechanism unit 21. The motor unit 14 is supported by the main body housing 12 that also serves as a housing for the handle unit 40 and the battery mounting unit 50. The reciprocating mechanism 21 is supported by a gear housing 22 as a housing having only the reciprocating mechanism 21. The main body housing 12 supports the components built in the hammer drill main body 11 including the electric motor 15 without providing an exterior of the rear portion of the gear housing 22 of the reciprocating mechanism 21. That is, the reciprocating mechanism 21 reciprocates the hammer bit B attached to the tool holder 37.

  The motor unit 14 in which the electric motor 15 is built will be described. The electric motor 15 includes a stator 151, a rotor 152, and a commutator 153. The stator 151 is supported by the main body housing 12. The rotor 152 is supported by the motor shaft 16 as a rotation shaft. The rotor 152 to which power is supplied rotates relative to the stator 151 with the motor shaft 16 as a rotation axis. As shown in the figure, the motor shaft 16 is disposed so as to extend in the vertical direction while slightly tilting to the rear side. The motor shaft 16 has a lower end portion supported by the lower bearing 161 and an upper end portion supported by the upper bearing 162. These two bearings 161 and 162 are supported by the main body housing 12. A cooling fan 17 for cooling the rotor 152 is attached to the lower part of the motor shaft 16. The cooling fan 17 is constituted by a sirocco fan that exhausts in the centrifugal direction, and sucks outside air from the intake opening 181 shown in FIG. 1 and the like and cools the electric motor 15, and then the exhaust opening shown in FIG. The air is exhausted from 182. An input gear 20 is provided at the upper end of the motor shaft 16. The input gear 20 is configured as a gear for inputting the rotational drive of the motor shaft 16 to the reciprocating mechanism 21 described below. The input gear 20 is configured as a bevel gear.

The reciprocating mechanism 21 will be described. The reciprocating mechanism portion 21 is disposed on the upper side of the motor portion 14. The reciprocating mechanism 21 appropriately converts the rotational driving force of the electric motor 15 to output it. The reciprocating mechanism 21 is a power transmission mechanism having a swash bearing type swing mechanism 27. The reciprocating mechanism unit 21 is configured by installing a drive conversion unit 23 and a reciprocating unit 30 inside a gear housing 22 forming an exterior. The drive conversion unit 23 converts the rotational driving force input from the input gear 20 into a rotational driving force and a reciprocating motion toward the hammer bit B and transmits the rotational driving force.
The drive conversion unit 23 generally includes a bevel gear 24, an intermediate shaft 25, and a rotation transmission gear 26. The bevel gear 24 is meshed with the input gear 20 described above, and an intermediate shaft 25 is provided as a rotation shaft. The intermediate shaft 25 rotates integrally with the bevel gear 24 that rotates in response to the rotation of the input gear 20. The intermediate shaft 25 is disposed so as to extend in the front-rear direction, the rear end portion is rotatably supported by the rear bearing 251, and the front end portion is rotatably supported by the front bearing 252. These two bearings 251 and 252 are supported by the main body housing 12 and the gear housing 22.
A rotation transmission gear 26 is provided on the outer periphery near the front end of the intermediate shaft 25. The rotation transmission gear 26 rotates integrally with the intermediate shaft 25 and meshes with a rotation transmitted gear 35 disposed on the upper side. The rotationally transmitted gear 35 is provided in a rotating cylinder 34 on the outer periphery of a cylindrical piston 31 described later, and rotates integrally with the rotating cylinder 34. A tool holder 37 that rotates integrally with the rotary cylinder 34 is attached to the front side of the rotary cylinder 34.

A swash bearing type swing mechanism 27 is provided at an intermediate portion of the intermediate shaft 25. The swing mechanism 27 functions to convert the rotational drive of the intermediate shaft 25 into a reciprocating motion. The swing mechanism 27 includes a rotating body 271, a rolling ball 273, and a swing ring 275. The rotating body 271 is provided integrally with the intermediate shaft 25. A ball groove 272 is cut on the outer peripheral surface of the rotating body 271. The ball groove 272 is provided so as to be inclined in the front-rear direction with respect to the rotational circumferential direction of the intermediate shaft 25. An inner part of the revolution diameter of the rolling ball 273 is fitted into the ball groove 272. The rolling ball 273 functions as a rolling bearing ball. The outer part of the revolution diameter of the rolling ball 273 is fitted to the inner peripheral surface of the swing ring 275. A swing rod 277 is provided on the upper side of the swing ring 275 so as to protrude, and the upper end of the swing rod 277 is connected to a rear portion of a cylindrical piston 31 described below. . In addition, the code | symbol 39 shown in FIG.
In the swing mechanism 27, when the rotating body 271 rotates with the intermediate shaft 25, the rolling ball 273 that rolls while being guided by the ball groove 272 changes the tilting posture of the swing ring 275. When the tilt posture of the swing ring 275 is changed in this way, the swing rod 277 on the upper portion of the swing ring 275 swings in the front-rear direction. The rocking rod 277 that rocks in this way reciprocates so that the reciprocating part 30 including the cylindrical piston 31 described below moves forward and backward.

The reciprocating part 30 generally includes a cylindrical piston 31, a striker 32, and an impact bolt 33. The cylindrical piston 31 is formed in a hollow cylindrical shape and is rotatably supported by the gear housing 22. The cylindrical piston 31 moves in the front-rear direction within the rotary cylinder 34. On the outer periphery of the rotating cylinder 34, there is provided a rotation transmitted gear 35 that meshes with a rotation transmitting gear 26 provided on the outer periphery of the intermediate shaft 25.
A striker 32 that functions as a striker is disposed in the hollow cylindrical interior of the cylindrical piston 31. The striker 32 can be moved back and forth in the front-rear direction relative to the rotating cylinder 34. The striking force of the striker 32 transmits an impact force in the axial length direction via an impact bolt 33 disposed on the front side with respect to the hammer bit B held by the tool holder 37 while being prevented from being removed by the chuck 38. These swing mechanism 27, striker 32, and impact bolt 33 constitute a striking mechanism according to the present invention. The tool holder 37 is formed in a substantially cylindrical shape that can rotate integrally with the rotary cylinder 34, and the hammer bit B is inserted therein. A chuck 38 is attached to the front side of the tool holder 37 to restrict the hammer bit B from coming off. The hammer bit B thus prevented from coming off by the chuck 38 operates to process the workpiece by receiving the drill action rotating in the circumferential direction and the hammer action hitting in the axial length direction.

Further, on the rear side of the reciprocating mechanism portion 21 described above, a handle portion 40 having a D-shape in side view is provided. A grip portion 41 that is grasped by a hand is provided at the rear portion of the handle portion 40. The grip portion 41 is provided with a trigger type operation switch 43. The operation switch 43 includes a switch body 431 and an operation trigger 432. The switch body 431 is turned on when the operation trigger 432 is pulled. The switch body 431 that has been turned on transmits an on signal to the controller 47 described later.
The handle portion 40 and a battery mounting portion 50 to be described next are formed by a main body housing 12 that forms an exterior. The main body housing 12 is formed by combining a left-side divided housing 121 and a right-side divided housing 122 that are formed by dividing the left and right sides. That is, the main body housing 12 corresponds to a molded member according to the present invention. The left divided housing 121 corresponds to the first molded member according to the present invention. The right split housing 122 corresponds to the second molded member according to the present invention. That is, the main body housing 12 is formed by a combination of the left divided housing 121 and the right divided housing 122 that are divided before and after the sliding direction when the rechargeable battery 90 is attached to the battery attachment portion 50. For this reason, the left-right direction divided by the left divided housing 121 and the right divided housing 122 coincides with the sliding direction when the rechargeable battery 90 is mounted on the battery mounting portion 50. The main body housing 12 is provided with an exterior member 70 attached to protect the hammer drill 10 itself. The exterior member 70 corresponds to the elastic member according to the present invention, and is specifically molded from an elastomer having elasticity (hereinafter, “molding material”). The exterior member 70 is formed by molding the molding material, which is an elastic material according to the present invention, in two colors when molding the plastic resin main body housing 12 (the left split housing 121 and the right split housing 122). Are integrated with the main body housing 12. The exterior member 70 is provided to improve the appearance of the design of the hammer drill 10, or is provided to reduce impact applied from the outside by force, such as dropping the hammer drill 10, or when the hammer drill 10 is used. It is provided to improve the user's feeling of use. For this reason, the exterior member 70 is formed of an elastic resin for these appropriate purposes.
Incidentally, the exterior member 70 has a portion set as a rubber bumper portion 71 that projects in the left-right width direction in the hammer drill main body 11. As shown in FIG. 3, the rubber bumper portion 71 is provided so as to protrude in the left-right width direction on the upper side of the battery mounting portion 50 described later. The rubber bumper portion 71 is mainly intended to reduce impact applied from the outside by force majeure. For this reason, the rubber bumper portion 71 has a shape protruding in the left-right width direction so as to reduce the impact well against the force majeure from the outside.

The main body housing 12 positioned below the handle portion 40 constitutes a controller support portion 45 and a battery mounting portion 50. That is, FIG. 6 is an enlarged external view of the battery mounting portion 50 of FIG. 1 with the rechargeable battery 90 removed. 7 is an enlarged external view of the battery mounting portion 50 of FIG. 2 with the rechargeable battery 90 removed. FIG. 8 is a cross-sectional view taken along the line (VIII)-(VIII) in FIG. FIG. 9 is a cross-sectional view taken along the (IX)-(IX) cross-section in FIG. 10 is a cross-sectional view taken along the (X)-(X) cross-section in FIG. FIG. 11 is a cross-sectional view taken along the (XI)-(XI) cross-section in FIG. FIG. 12 is a perspective view showing the interior of the guide groove 522 in an enlarged perspective view from below. FIG. 13 is a perspective view showing the interior of the guide groove 522 in an enlarged perspective view from above.
The controller support unit 45 supports a controller 47 that controls power supply to the electric motor 15. Therefore, although not shown in FIGS. 4 and 5, the controller 47 is connected to the electric motor 15 and the battery mounting portion 50 via appropriate lead wires (conductive wires). As shown in FIGS. 4, 9, and 10, the controller 47 has a rectangular outer shape. The controller support portion 45 is formed by protruding the controller 47 in the main body housing 12 from the front, rear, top, bottom, left and right in a rib shape.

That is, as shown in FIG. 9, in the left divided housing 121, the front rib 451, the rear rib 452, and the left rib 453 that form the controller support portion 45 are provided so as to protrude toward the inside. ing. Also in the right split housing 122, the front rib 461, the rear rib 462, and the right rib 463 that form the controller support portion 45 are provided so as to protrude inward. The front ribs 451 and 461 and the rear ribs 452 and 462 abut and support the controller 47 so as to be sandwiched between the front and rear. Also, the controller 47 is abutted and supported so as to be sandwiched between the left and right ribs 453 and the right rib 463 of the main body housing 12.
Furthermore, as shown in FIG. 10, in the left divided housing 121, an upper contact portion 455 and a lower contact portion 456 forming the controller support portion 45 are provided so as to protrude inward. It has been. Also in the right split housing 122, the upper contact portion 465 and the lower contact portion 466 that form the controller support portion 45 are provided so as to protrude inward. These upper abutting portions 455 and 465 and lower abutting portions 456 and 466 abut and support the controller 47 so as to be sandwiched vertically.

  An urging damper portion 48 is provided at a location adjacent to the controller support portion 45. The urging damper portion 48 functions as a damper that abuts against the controller 47 that abuts and is supported by the controller support portion 45 while having an urging force. As shown in FIGS. 9 and 10, the biasing damper portion 48 abuts on the right side surface of the controller 47 and biases the controller 47 toward the left side. The urging damper portion 48 is molded together with and integrally with the rubber bumper portion 71 when the rubber bumper portion 71 described above is molded. Specifically, as shown in FIG. 10, the right split housing 122 is provided with a communication hole 19 that allows communication between the outside and the inside. When the molding material (elastic material) is poured through the communication hole 19, the rubber bumper portion 71 and the biasing damper portion 48 are molded together and integrally. The biasing damper portion 48 is disposed between the left rib 453 and the right rib 463 described above. In addition, the molding material injected for molding wraps around from the outside to the inside of the main body housing 12 through the communication hole 19, and the wrapping molding material is molded below the controller 47. The material storage chamber 49 is entered. The molding material storage chamber 49 is provided in order to improve molding stability when molding the front battery contact portion 55 (65) described later. The biasing damper portion 48 thus provided supports the controller 47 so as to press it toward the left side by the elasticity of the molding material. That is, the biasing damper portion 48 supports the controller 47 so as to press in the left-right direction (second direction) orthogonal to the reciprocating direction of the hammer bit B. Even when the hammer drill 10 is subjected to an impact due to an inevitable force from the outside, the biasing damper portion 48 that supports the pressure in this way prevents the controller 47 from being damaged by such an impact. Acts as an elastic support. That is, the biasing damper portion 48 corresponds to a component support portion according to the present invention, and the controller 47 corresponds to an electric material component according to the present invention.

Next, the battery mounting unit 50 will be described. A plurality of two battery mounting portions 50 are provided in parallel. The two battery mounting portions 50 are provided in parallel in the front-rear direction below the controller support portion 45 described above. The two battery mounting portions 50 are configured in substantially the same manner. In addition, the battery mounting part 50 arrange | positioned relatively in the front side by both is set as the front battery mounting part 51, and the battery mounting part 50 arrange | positioned relatively in the rear side by both is set as the rear battery mounting part 61. It is set as. One rechargeable battery 90 can be mounted on each of the front battery mounting portion 51 and the rear battery mounting portion 61. In this way, two rechargeable batteries 90 can be attached to the hammer drill body 11. The front battery mounting portion 51 and the rear battery mounting portion 61 are provided with a structure for sliding and mounting, corresponding to a slide mounting type rechargeable battery 90. The sliding direction when the rechargeable battery 90 is mounted on the battery mounting unit 50 (51, 61) is set to the direction from left to right. In addition, a partition wall body 60 that partitions the battery mounting portions 50 from each other is provided between the front battery mounting portion 51 (50) and the rear battery mounting portion 61 (50). The partition wall body 60 is provided with a guide groove portion 522 and a guide groove portion 621 which will be described later.
Both the front battery mounting portion 51 and the rear battery mounting portion 61 are configured substantially the same. For this reason, in describing the battery mounting portion 50, the reference number (reference number 50 series) for the front battery mounting portion 51 will be mainly described and the reference number for the rear battery mounting portion 61 (reference number 60 series). Is described in parentheses.

  That is, the front battery mounting portion 51 (61) has a structure in which the rechargeable battery 90 is mounted by sliding, as shown in FIGS. For this reason, the front battery mounting portion 51 (61) is provided with a structure for slidingly mounting the rechargeable battery 90 and a structure for electrically connecting the rechargeable battery 90. That is, the front battery mounting portion 51 (61) is provided with a pair of guide groove portions 521 (621) and 522 (622) as a structure for sliding mounting. Although not particularly shown, the guide male portion provided in the rechargeable battery 90 is fitted into the guide groove portions 521 (621) and 522 (622) so as to be inserted in the sliding direction. The guide groove portions 521 (621) and 522 (622) into which the guide male portions are fitted in this way guide a slide for mounting the rechargeable battery 90. In addition, the front battery mounting portion 51 (61) includes a battery terminal provided with a positive terminal 531 (631), a negative terminal 532 (632), and a signal terminal 533 (633) as a structure to be electrically connected. A connecting portion 53 (63) is provided. The battery terminal connection portion 53 (63) is connected to a male and female terminal connection portions provided on the rechargeable battery 90 (not shown) to make electrical connection to the rechargeable battery 90. Further, when the rechargeable battery 90 is slid and electrically connected to the front battery mounting portion 51 (61), the rechargeable battery 90 in this state is connected to the front battery mounting portion 51 (61). A recessed portion 54 (64) is provided. The recess 54 (64) is engaged with a male hook of the rechargeable battery 90, although not particularly shown. In addition, as the voltage of the rechargeable battery 90 to be slide-mounted, an appropriate voltage is set.

By the way, the above-mentioned guide groove portion 522 disposed on the rear side of the front battery mounting portion 51 and the guide groove portion 621 disposed on the front side of the rear battery mounting portion 61 are provided with battery contact portions 55 and 65, respectively. It has been. Specifically, the front battery contact portion 55 is provided inside the guide groove portion 522 on the right side in the sliding direction for mounting the rechargeable battery 90 on the front battery mounting portion 51. In addition, a rear battery contact portion 65 is provided inside the guide groove portion 621 on the left side in the sliding direction in which the rechargeable battery 90 is mounted on the rear battery mounting portion 61. That is, the front battery contact portion 55 and the rear battery contact portion 65 are provided for the guide groove portions 522 and 621 disposed on the front and rear sides of the partition wall 60 between the battery mounting portions 51 and 61. ing. The front battery contact portion 55 and the rear battery contact portion 65 are formed to have a symmetrical shape in which the partition wall body 60 forms a symmetrical center line.
The front battery contact portion 55 includes a contact tip portion 56 and a pressing flat portion 57 in the order in which the rechargeable battery 90 contacts. That is, the front battery contact portion 55 is a guide male portion of the rechargeable battery 90 that is fitted into the guide groove portion 522 during the slide of the rechargeable battery 90 when the rechargeable battery 90 is attached to the front battery attachment portion 51. The front end of the slide hits. The contact tip 56 includes a tip facing portion 561 formed as an outer edge, and a tip inclined surface 562 provided inside the tip facing portion 561 (inside the front battery mounting portion 51). The tip facing portion 561 has a surface shape extending in a direction orthogonal to the sliding direction of the rechargeable battery 90 to be mounted. For this reason, the tip facing portion 561 faces the rechargeable battery 90 that slides. On the other hand, the tip inclined surface portion 562 has a surface shape that inclines so as to go inward according to the sliding direction in which the rechargeable battery 90 is mounted. The tip inclined surface portion 562 contacts the rechargeable battery 90 in the sliding direction when the rechargeable battery 90 is slid before the mounting is completed, and faces the inner side of the front battery mounting portion 51 orthogonal to the sliding direction. To contact the rechargeable battery 90. The pressing flat portion 57 has a surface shape that extends in the sliding direction from the front end of the tip inclined surface portion 562 in the sliding direction. For this reason, the pressing flat portion 57 is formed so as to face the innermost side of the front battery mounting portion 51 and faces the front battery mounting portion 51. Thus, the front battery contact portion 55 can contact the rechargeable battery 90 in the reciprocating direction of the hammer bit B so as to apply a biasing force.

  Even in the rear battery contact portion 65, the rear battery contact portion 65 is formed so as to be symmetrical with the front battery contact portion 55 described above. That is, the rear battery contact portion 65 is also formed with the contact tip portion 66 and the pressing flat portion 67 in the order in which the rechargeable battery 90 contacts. That is, the rear battery contact portion 65 is a guide male portion of the rechargeable battery 90 that is fitted into the guide groove portion 622 during the slide of the rechargeable battery 90 when the rechargeable battery 90 is mounted on the rear battery mounting portion 61. The front end of the slide is hit. The contact tip portion 66 has a tip facing portion 661 formed as an outer edge and a tip inclined surface portion 662 provided inside the tip facing portion 661 (inside the rear battery mounting portion 61). The tip facing portion 661 has a surface shape extending in a direction orthogonal to the sliding direction of the rechargeable battery 90 to be mounted. For this reason, the tip facing portion 661 faces the rechargeable battery 90 that slides. On the other hand, the tip inclined surface portion 662 has a surface shape that inclines so as to go inward according to the sliding direction in which the rechargeable battery 90 is mounted. The tip inclined surface portion 662 contacts the rechargeable battery 90 in the sliding direction when the rechargeable battery 90 is slid before the mounting is completed, and the inner side of the rear battery mounting portion 61 that intersects the sliding direction at right angles. It contacts the rechargeable battery 90 in the direction. Further, the pressing flat portion 67 has a surface shape extending in the sliding direction from the front end of the tip inclined surface portion 662 in the sliding direction. For this reason, the pressing flat portion 67 is formed so as to face the innermost side of the rear battery mounting portion 61 and faces the inner side of the rear battery mounting portion 61. That is, the battery contact portion 65 thereafter has a shape that can contact the rechargeable battery 90 so as to apply a biasing force in the first direction that is the reciprocating direction of the hammer bit B. .

  The front battery contact portion 55 and the rear battery contact portion 65 formed in this way are formed using a molding material for forming the rubber bumper portion 71 and the biasing damper portion 48 described above. For this reason, the front battery contact portion 55 and the rear battery contact portion 65 are formed with the same elasticity as the rubber bumper portion 71 and the biasing damper portion 48 described above. That is, the front battery contact portion 55 and the rear battery contact portion 65 are formed by further wrapping the molding material injected to form the biasing damper portion 48 described above. Specifically, as shown in FIG. 8, the partition wall body 60 is provided with a front side communication hole 59 and a rear side communication hole 69. The front communication hole 59 and the rear communication hole 69 are formed as holes that allow passage between the molding material storage chamber 49 shown in FIG. 10 and the guide groove part 522 and the guide groove part 621 shown in FIG. Thus, the molding material that has entered the molding material storage chamber 49 further passes through the front communication hole 59 and the rear communication hole 69 to the guide groove portion 522 and the guide groove portion 621. In this way, the molding material that has entered the guide groove portion 522 and the guide groove portion 621 can be formed like the front battery contact portion 55 and the rear battery contact portion 65 described above. That is, the front battery contact portion 55 and the rear battery contact portion 65 are formed together and integrally with the rubber bumper portion 71 and the biasing damper portion 48 described above. The molding material storage chamber 49 shown in FIG. 10 stabilizes the flow of the molding material around when the front battery contact portion 55 and the rear battery contact portion 65 are molded.

Further, the battery mounting portion 50 is provided with a pin-shaped member 75 in which the battery mounting portion 50 comes into contact with the upper surface of the rechargeable battery 90 in order to eliminate rattling of the rechargeable battery 90 mounted on the battery mounting portion 50. ing. The pin-shaped member 75 corresponds to the mounting contact portion according to the present invention, and is set to contact in the facing direction of the rechargeable battery 90. In addition, the facing direction which becomes the contact direction with respect to the rechargeable battery 90 of this pin-shaped member 75 is the rechargeable type set as the front-rear direction of the hammer drill 10 set as the first direction and the second direction. It is set in a vertical direction that intersects at right angles to both directions with respect to the sliding direction of the battery 90 (the horizontal direction of the hammer drill 10).
Specifically, as shown in FIG. 11, the battery mounting portion 50 is provided with a holding concave portion 73 having an appropriate concave shape. A pin-shaped member 75 formed of elastic rubber resin is fitted into the holding recess 73. The pin-shaped member 75 is set to a length that slightly protrudes from the holding recess 73 when fitted into the holding recess 73. For this reason, the exposed end 76 of the pin-shaped member 75 fitted in the holding recess 73 is exposed so as to protrude slightly outside. An appropriate chamfered chamfered portion 77 is provided at the edge of the exposed end 76. As a result, the rechargeable battery 90 that is to be slid and mounted can be smoothly put over the pin-shaped member 75 by the chamfered portion 77 of the pin-shaped member 75 to be in a mounted state. The external end face of the exposed end 76 is set as a flattened contact end face 78. As a result, the rechargeable battery 90 attached to the battery attachment portion 50 comes to abut the contact end surface 78 of the pin-shaped member 75 against the rechargeable battery 90. Here, the abutting end surface 78 of the pin-shaped member 75 abuts the upper surface of the rechargeable battery 90 mounted on the battery mounting portion 50 while slightly pressing the surface.
Note that the holding recess 73 and the pin-shaped member 75 fitted in the holding recess 73 described above are corners that are symmetrical with respect to the central axis of the rechargeable battery 90 with respect to the rechargeable battery 90 mounted on the battery mounting portion 50. It is provided at four locations near the position. For this reason, the surface pressing of the pin-shaped member 75 against the rechargeable battery 90 mounted on the battery mounting portion 50 is a balanced surface pressing, and the backlash of the rechargeable battery 90 mounted on the battery mounting portion 50 is suppressed in a well-balanced manner. be able to.

The front battery contact portion 55 and the rear battery contact portion 65 formed as described above operate as follows. In describing the abutting action on the rechargeable battery 90, the front battery abutting portion 55 will be described, and the rear battery abutting portion 65 will be described by adding reference numerals in parentheses. That is, the front battery contact portion 55 (65) is configured such that the guide male portion of the rechargeable battery 90 hits according to the slide of the rechargeable battery 90 to be attached.
The male guide portion of the rechargeable battery 90 to be slid contacts the contact tip portion 56 (66). Specifically, the sliding direction end of the guide male portion of the rechargeable battery 90 hits the contact tip portion 56 (66) having the tip facing portion 561 (661) and the tip inclined surface portion 562 (662). At this time, the elasticity of the contact tip 56 (66) acts to buffer the sliding guide male part. Next, according to the slide on which the rechargeable battery 90 is mounted, the guide male portion of the rechargeable battery 90 can be guided along the inclination of the tip inclined surface portion 562 (662). That is, the tip inclined surface portion 562 (662) acts to push the sliding guide male portion toward the inside of the battery mounting portion 50. At this time, the tip inclined surface portion 562 (662) acts to buffer the sliding force of the sliding guide male portion by the elasticity of the tip inclined surface portion 562 (662). Thereafter, the rechargeable battery 90 that has been slid and is mounted on the battery mounting portion 50 is elastically supported by the pressing flat portion 57 (67). In other words, the pressing flat portion 57 (67) of the rechargeable battery 90 is directed from the guide groove portion 522 (621) where the front battery contact portion 55 (65) is provided toward the opposing guide groove portion 521 (622). Elastic support is provided so as to press the guide male part. That is, the pressing flat portion 57 (67) abuts against the guide male portion of the rechargeable battery 90 in the front-rear direction which is the reciprocating direction of the hammer bit B.

By the way, the guide groove portions 521 and 522 of the front battery mounting portion 51 are formed by providing rail portions 52 and 62, respectively. The guide groove portions 621 and 622 of the rear battery mounting portion 61 are also formed by providing the rail portions 52 and 62, respectively. A reinforcing member 80 that is advantageous in wear resistance of the slide for attaching and detaching the rechargeable battery 90 is assembled to each of the rail portions 52 and 62. More specifically, the reinforcing member 80 is assembled to each of the pair of rail portions 52 forming the guide groove portions 521 and 522 of the front battery mounting portion 51. Further, the reinforcing member 80 is assembled to each of the rail portions 62 forming a pair forming the guide groove portions 621 and 622 of the rear battery mounting portion 61. That is, a sheet metal reinforcing member 80 formed of metal is assembled to the rail portions 52 and 62 formed of plastic resin. Since the reinforcing member 80 assembled in this way is formed of metal, it is more excellent in wear resistance than the plastic resin forming the rail portions 52 and 62. For this reason, it is possible to prevent the rail portions 52 and 62 from being worn due to sliding of the rechargeable battery 90 when the rechargeable battery 90 is attached and detached. The rail portions 52 and 62 to which the reinforcing member 80 is assembled correspond to a portion where the guide male portion of the guide groove portion according to the present invention is in sliding contact.
The weight of the rechargeable battery 90 is applied to the rail portions 52 and 62. For this reason, the sliding contact of the rechargeable battery 90 with respect to the rail portions 52 and 62 is performed while receiving the weight pressure of the rechargeable battery 90. For this reason, the location where the reinforcing member 80 is assembled is set on the lower side in the gravity direction with respect to the guide groove portions 521, 522, 621, and 622.
The assembly location of the reinforcing member 80 is set near the insertion port end of the guide groove portions 521, 522, 621, and 622 where the guide male portion starts to be fitted. That is, when the rechargeable battery 90 is attached to or detached from the battery mounting portion 50, the reinforcing member 80 is attached to the portion where the sliding friction from the guide male portion is most easily received. Yes. The reinforcement by the reinforcing member 80 makes the slide guide of the rechargeable battery 90 in the guide groove portions 521, 522, 621, and 622 more stable.

  Furthermore, the rail parts 52 and 62 have a male shape that fits into a concave shape by the male guide part of the rechargeable battery 90. That is, it is relatively easy to rub against a portion of the rechargeable battery 90 near the guide male part. For this reason, the reinforcing member 80 is formed to have a shape surrounding three directions when viewed in the sliding direction so as to cover and cover the guide groove portions 521, 522, 621, and 622. Specifically, the reinforcing member 80 has a shape that covers the lower surfaces of the guide groove portions 521, 522, 621, 622 so as to cover the rail portions 52, 62 and is assembled to the rail portions 52, 62. Yes. As shown in FIG. 15, the reinforcing member 80 is assembled at the place where the left divided housing 121 and the right divided housing 122 face each other when they are combined on the left and right sides. Can be assembled for Specifically, an assembly recess 850 that allows the reinforcement member 80 to be assembled is provided in both the left divided housing 121 and the right divided housing 122. The assembly recess 850 has a shape corresponding to the shape of the reinforcing member 80 described below. Further, as shown in FIGS. 15 and 16, the reinforcing member 80 surrounds the three directions of the upper side, the lower side, and the inner side (the inner side of the battery mounting portion 50) when viewed in the sliding direction of the rechargeable battery 90. It has a U shape like this. Specifically, the U-shape of the reinforcing member 80 has facing walls 81, 81 that are vertically arranged facing each other, and a connecting wall 82 that connects one side edge of both edges of the facing walls 81, 81. Is formed. As shown in FIG. 16, in the facing walls 81, 81 that face each other vertically, other than the non-joining side (outside of the battery mounting portion 50) opposite to the side that is joined by the connecting wall 82. The side edges are slightly set, but are inclined so as to approach each other. Therefore, simply by fitting the reinforcing member 80 into the assembly recess 850 (insertion recess 85), the other side edge of the non-connection side opposite to the side connected by the connection wall 82 is the assembly recess 850. The assembling concave portion 850 (the fitting concave portion 85) is gripped so as to be sandwiched.

Further, the reinforcing member 80 is provided with hooking portions 83 and 84. The latching portions 83 and 84 are provided at both side ends of the facing walls 81 and 81, respectively. In other words, the latching portions 83 and 84 are provided at both ends facing the left divided housing 121 and the right divided housing 122, respectively. The latch portions 83 and 84 are formed to prevent the reinforcing member 80 from coming off when the left split housing 121 and the right split housing 122 are combined to form the battery mounting portion 50. That is, the latching portions 83 and 84 have a structure that latches against the mounting recess 850 of the rail portions 52 and 62 that form the guide groove portions 521, 522, 621, and 622, and prevent the reinforcement member 80 from coming off. .
Specifically, as shown in FIG. 15, a left hook 83 is provided at the left end of the reinforcing member 80 on the side facing the left divided housing 121, and the reinforcing member on the side facing the right divided housing 122. A right hook 84 is provided at the right end of 80. The left hook 83 and the right hook 84 are formed so as to be symmetrical with each other. The left hook 83 and the right hook 84 each have a tapered shape that tapers toward the end. The left hook portion 83 and the right hook portion 84 are provided with projecting ends 831 and 841 for hooking, and guide outer edge portions 832 and 842 that are guided according to assembly. ing. That is, the outside of the battery mounting portion 50 at the protruding ends 831 and 841 is formed to have an edge shape that is continuous with the other side edge of the facing walls 81 and 81 (outside of the battery mounting portion 50). On the other hand, the guide outer edge portions 832 and 842 described above are provided on the opposite side of the edge shape (inside the battery mounting portion 50). The guide outer edge portions 832 and 842 are formed to have an inclined edge shape toward the non-joining side of the facing walls 81 and 81 (outside of the battery mounting portion 50) as it goes toward the ends. That is, the guide outer edge portions 832 and 842 are inclined toward the outside of the battery mounting portion 50 with respect to the direction in which the left divided housing 121 and the right divided housing 122 are combined. The guide outer edge portions 832 and 842 formed in this way are fitted into latching recesses 87 and 88 forming both side ends of the assembly recess 850 described below, and restrict the removal of the reinforcing member 80 from the assembly recess 850. Acts like

  Further, the mounting recess 850 to which the above-described reinforcing member 80 is assembled is formed corresponding to the shape of the above-described reinforcing member 80. That is, as shown in FIG. 16, the assembly recess 850 is formed to have a concave shape such that the assembled reinforcing member 80 is flush with the rail portions 52 and 62. Specifically, the assembly recess 850 includes a fitting recess 85 and latching recesses 87 and 88. The fitting recess 85 has a concave shape for fitting the facing walls 81 and 81 of the U-shaped reinforcing member 80 and the connecting wall 82 so as to have an outer peripheral surface that is flush with the rail portions 52 and 62. Is done. The fitting recess 85 is formed by providing a U-shaped concave shape in three directions of the upper side, the lower side, and the inner side (the inner side of the battery mounting portion 50). The fitting recessed portion 85 is provided only in the left divided housing 121 that forms the rail portion 52, and is not provided in the right divided housing 122 that forms the rail portion 62. Further, the latching recesses 87 and 88 are also formed to have a concave shape into which the left latching part 83 and the right latching part 84 are fitted so as to have the outer peripheral surface flush with the rail parts 52 and 62. . The latching recesses 87 and 88 are provided in both the left divided housing 121 and the right divided housing 122 that form the rail portions 52 and 62. The latching recesses 87 and 88 are provided with latching recesses 871 and 881 corresponding to the projecting ends 831 and 841 for latching the left latching portion 83 and the right latching portion 84, and depending on the assembly. Guide concave walls 872 and 882 for guiding the guide outer edge portions 832 and 842 are provided. That is, when the guide outer edge portions 832 and 842 of the latching portions 83 and 84 hit the guide concave walls 872 and 882, the protruding ends 831 and 841 are fitted into the latching concave portions 87 and 88 by the force in the left and right assembly directions. An acting force is generated so as to get stuck. That is, an assembling action force is generated on the reinforcing member 80 so that the reinforcing member 80 is correctly arranged corresponding to the concave shape of the assembling concave portion 850. Further, the assembling action force with respect to the reinforcing member 80 also acts as a detachment preventing force of the reinforcing member 80 with respect to the assembling recess 850.

When assembling the reinforcing member 80 into the assembling recess 850, the reinforcing member 80 is first fitted into the fitting recess 85 of the left split housing 121 in a state where the left split housing 121 and the right split housing 122 are separated. . At this time, the facing walls 81 and 81 of the reinforcing member 80 can be temporarily fixed to the fitting recess 85 described above so as to grip the fitting recess 85 of the left divided housing 121. Here, when the left divided housing 121 and the right divided housing 122 are united, the guide outer edge portions 832 and 842 of the latching portions 83 and 84 hit the guide concave walls 872 and 882, and the latching concave portion. The projecting ends 831 and 841 fit into the 87 and 88, respectively. Accordingly, the reinforcing member 80 is naturally arranged at a correct position corresponding to the concave shape of the assembly concave portion 850. In this way, the reinforcing member 80 can be reliably assembled at desired locations of the guide groove portions 521, 522, 621, and 622 by simply assembling the left divided housing 121 and the right divided housing 122.
As described above, the reinforcing member 80 is assembled to the assembling recess 850 with assembling action force and detachment preventing force. For this reason, when the left split housing 121 and the right split housing 122 are released from being combined and the left split housing 121 and the right split housing 122 are separated, the guide groove portions 521, 522, 621, and 622 are desired. The reinforcing member 80 assembled at the location can be removed.

According to the hammer drill 10 described above, the following operational effects can be achieved.
That is, according to the hammer drill 10 described above, the battery contact portions 55 and 65 are connected to the battery mounting portion 50 (51, 61) in the reciprocating direction of the hammer bit B (tip tool). The urging force can be given to. Thereby, the relative movement of the rechargeable battery 90 with respect to the battery mounting part 50 (51, 61) in the reciprocating direction of the hammer bit B can be stopped. Therefore, since the play of the rechargeable battery 90 that easily vibrates in the reciprocating direction of the hammer bit B can be further eliminated, the play of the rechargeable battery 90 attached to the battery attachment portion 50 (51, 61) is eliminated. Can be enough. Further, according to the hammer drill 10 described above, the battery contact portions 55 and 65 are provided by turning a molding material (elastic material) provided outside the main body housing 12 to the inside of the main body housing 12, so that one molding material is provided. It becomes possible to mold with. As a result, the number of materials at the time of molding can be suppressed while sufficiently eliminating the rattling of the rechargeable battery 90 described above, which is advantageous from the viewpoints of simplifying the manufacturing operation and reducing the manufacturing cost. Further, according to the hammer drill 10 described above, the battery contact portions 55 and 65 have the left and right directions and the front and rear directions intersecting with the rechargeable battery 90 before the rechargeable battery 90 is completely attached to the battery mounting portion 50. Contact tip portions 56 and 66 that contact with each other are provided. As a result, the contact tip portions 56 and 66 can be brought into contact with each other in the left and right and front and rear directions intersecting with each other when the rechargeable battery 90 is attached to the battery attachment portion 50, thereby suppressing backlash. Therefore, the mounting of the rechargeable battery 90 can be made more stable, and the mounting of the rechargeable battery 90 to the battery mounting portion 50 (51, 61) can be made more reliable. Further, according to the hammer drill 10 described above, the pin-shaped member 75 that contacts the mounted rechargeable battery 90 in the vertical direction intersecting both the left-right direction and the front-rear direction is provided. The rechargeable battery 90 attached together with the tip portions 56 and 66 can be supported by abutting in the left, right, front, back, top and bottom directions. As a result, the play of the rechargeable battery 90 in the three intersecting directions of the left, right, front, back, top, and bottom can be eliminated, so that the play of the rechargeable battery 90 attached to the battery attachment portion 50 (51, 61) is eliminated. Can be enough.
Further, according to the hammer drill 10 described above, the battery contact portions 55 and 65 are provided in the guide groove portions 521, 522, 621, and 622. Since the guide groove portions 521, 522, 621, and 622 are formed in a female shape corresponding to the guide male portion of the rechargeable battery 90, the guide groove portions 521, 522, 621, and 622 can be slidably contacted so as to surround the guide male portion. As a result, the play of the rechargeable battery 90 attached to the battery attachment unit 50 (51, 61) can be efficiently eliminated in multiple directions. Further, according to the above-described hammer drill 10, the above-described molding material is integrally formed with a biasing damper portion 48 that contacts the controller 47 provided inside the main body housing 12 and supports the controller 47 inside the main body housing 12. Therefore, the controller 47 can be further supported by molding one molding material. Thereby, the number of materials at the time of molding for supporting the controller 47 can be suppressed while sufficiently eliminating the looseness of the rechargeable battery 90 described above. Therefore, it can be advantageous from the viewpoint of simplification of manufacturing work and reduction of manufacturing cost. Moreover, according to the hammer drill 10 described above, since a plurality of battery mounting portions 50 (51, 61) are provided, a plurality of rechargeable batteries 90 can be mounted. Thereby, it can be set as the reciprocating tool which can raise the capability regarding electric power supply. For example, it is possible to expand the range of use as a power tool by increasing the capacity of the supplied power to enable long-term use, or increasing the voltage of the supplied power to enable high-output use. Further, according to the hammer drill 10 described above, the sliding direction in which the rechargeable battery 90 of the battery mounting portion 50 (51, 61) is mounted is set in the left-right direction intersecting the reciprocating direction of the tool holder 37. The bulk of the rechargeable battery 90 in the reciprocating direction can be reduced. As a result, a reciprocating tool that is compact in the reciprocating direction can be obtained.

According to the above-described hammer drill 10, the reinforcing member 80 is assembled from the facing portion of the left divided housing 121 and the right divided housing 122 before being combined to the left divided housing 121 and the right divided housing 122. It is supposed to be. As a result, the reinforcing member 80 can be assembled at the same time as the left divided housing 121 and the right divided housing 122 are combined. Here, since the latching portions 83 and 84 are provided on the reinforcing member 80, when the left split housing 121 and the right split housing 122 are combined to form the battery mounting portion 50 (51, 61). The detachment of the reinforcing member 80 from the guide groove portions 521, 522, 621, and 622 can be restricted, and the reinforcing member 80 can be hooked to a place where it is assembled. Accordingly, the left divided housing 121 and the right divided housing 122 can be combined to prevent the assembled reinforcing member 80 from being detached from the assembly location. Further, according to the hammer drill 10 described above, since the latching portions 83 and 84 are provided with the guide outer edge portions 832 and 842, the reinforcing member 80 is assembled to the assembly position of the left divided housing 121 and the right divided housing 122. The reinforcing member 80 can be guided so as to be positioned at the position. Thereby, the assembling work of the reinforcing member 80 is automatically performed only by the union work of the left divided housing 121 and the right divided housing 122. Therefore, the convenience for the work of assembling the reinforcing member 80 can be enhanced.
Further, according to the hammer drill 10 described above, since the reinforcing member 80 has a U-shape surrounding the upper lower inner three directions when viewed in the sliding direction, the upper lower inner three directions intersecting the sliding direction. Can be reinforced by the reinforcing member 80. Thus, the sliding contact surface facing in multiple directions can be efficiently reinforced with one member. Further, according to the hammer drill 10 described above, the latching portions 83, 84 are provided on the facing walls 81, 81 which are two U-shaped opposing surfaces of the reinforcing member 80, respectively. It is possible to make a good balance with a pair of hooks. Thereby, the restriction | limiting of the removal of the reinforcement member 80 by the latching parts 83 and 84 can be made into the restriction | limiting of the removal of the reinforcement member 80 stronger. In addition, according to the hammer drill 10 described above, the reinforcing member 80 is installed at a location near the insertion port end of the guide groove portions 521, 522, 621, and 622 where the guide male portion starts to be fitted, so that it is more worn out. The vicinity of the insertion port end of the easy guide groove portions 521, 522, 621 and 622 can be intensively reinforced. Further, according to the hammer drill 10 described above, the reinforcing member 80 can be attached to and detached from the place where the guide groove portions 521, 522, 621, 622 are assembled when the left divided housing 121 and the right divided housing 122 are separated. Since it is configured, the reinforcing member 80 can be easily replaced. Further, even when the hammer drill 10 is discarded, the reinforcing member 80 can be easily removed and discarded.

Incidentally, the above-described reinforcing member 80 may be configured as follows. That is, reference numeral 80A shown in FIGS. 18 and 19 is a modified example of the reinforcing member 80 described above. FIG. 18 is an enlarged perspective view showing another example of the reinforcing member 80A. FIG. 19 is a perspective view showing a case where the reinforcing member 80 </ b> A of FIG. 18 is assembled to the left split housing 121. The reinforcing member 80A is different only in the structure to be hooked when assembled to the assembly recess 850A. For this reason, for parts having the same functions as those in the above-described embodiment, the reference numerals with “A” added to the end of the reference numerals described in the above-described embodiments are shown in the drawings, and detailed description thereof is omitted. It shall be.
That is, the reinforcing member 80A shown in FIG. 18 and FIG. 19 is provided with the hooking claws 83A and 84A as functional parts that replace the hooking parts 83 and 84 of the reinforcing member 80. The latching claws 83A and 84A are fitted into fitting recesses 87A and 88A provided in the assembly recess 850A. The engaging claws 83A and 84A are fitted into the fitting recesses 87A and 88A by elastic deformation of the facing walls 81A and 81A and the connecting wall 82A of the reinforcing member 80. In this way, the reinforcing member 80A assembled to the assembly recess 850A has the latching claws 83A and 84A fitted to the fitting recesses 87A and 88A, so that the left divided housing 121 and the right divided housing 122 are separated. Even in this state, the reinforcing member 80A is more difficult to be detached from the assembly recess 850A. In addition, since the above-described reinforcing member 80 is assembled together as a pair of the rail portion 52 of the front battery mounting portion 51 and the rail portion 62 of the rear battery mounting portion 61, The strength of both guide groove portions 521, 522, 621, and 622 constituting the battery mounting portion 50 with respect to attachment / detachment can be increased.

In addition, the hammer drill 10 of above-described embodiment is mentioned as an example of the electric tool which concerns on this invention, and the reciprocating tool which concerns on this invention. The electric tool according to the present invention is not limited to the configuration of the hammer drill 10 of the above-described embodiment, and can be applied to an appropriate electric tool configured using an electric motor as a drive source. For example, the electric tool according to the present invention may be an electric driver, an electric drill, a driver drill, or the like, or a cleaner, a disk sander, a polisher, or the like. Furthermore, the reciprocating tool according to the present invention is not limited to the configuration of the hammer drill 10 according to the above-described embodiment, but has a reciprocating mechanism that reciprocates a tool output unit to which a tip tool is attached. For example, a reciprocating saw or the like may be used.
Further, the elastic material according to the present invention is not limited to the example of the elastomer of the above-described embodiment, and a material having appropriate elasticity may be selected. Further, the elastic material for forming the battery contact portion is not necessarily required to be a single elastic material that is used in common with the rubber bumper portion 71, the biasing damper portion 48, and the like.
In addition, the battery contact portion according to the present invention is not limited to the example of the battery contact portions 55 and 65 of the above-described embodiment, and many such as provided in pairs at a facing position or the like. It may be provided at a location.
Further, the reinforcing member according to the present invention is not limited to the example of the reinforcing member 80 of the above-described embodiment, and the reinforcing member is assembled so as to restrict the removal of the reinforcing member from the guide groove portion. It is only necessary to provide a latching portion that is latched with respect to the location, and an appropriate shape can be selected as long as the latching portion is provided in this manner. Also, as the shape of the guide edge according to the present invention, an appropriate shape can be selected similarly to this.
Further, the reinforcing member according to the present invention is not limited to the example of the reinforcing member 80 of the above-described embodiment, and the length, size, and quantity may be appropriately changed. In addition, it is only necessary that an appropriate reinforcing member is provided at a place where the rechargeable battery is slidably contacted.

10 Hammer drill (Electric tool, reciprocating tool)
11 Hammer drill body (tool body)
12 Body housing (molded member)
121 Left split housing (first molded member)
122 Right split housing (second molding member)
13 Drive unit 14 Motor unit 15 Electric motor (motor)
151 Stator 152 Rotor 153 Commutator 16 Motor shaft 161 Lower bearing 162 Upper bearing 17 Cooling fan 181 Intake opening 182 Exhaust opening 19 Communication hole 20 Input gear 21 Reciprocating mechanism 22 Gear housing 23 Drive converter 24 Bevel gear 25 Intermediate shaft 251 Rear bearing 252 Front bearing 26 Rotational transmission gear 27 Rotating mechanism 271 Rotating body 272 Ball groove 273 Rolling ball 275 Swing ring 277 Swing rod 30 Reciprocating part 31 Cylindrical piston 32 Strike 33 Impact bolt 34 Rotating cylinder 35 Rotated transmitted gear 37 Tool holder (tool output part)
38 Chuck 39 Changeover switch 40 Handle part 41 Grip part 43 Operation switch 431 Switch body 432 Operation trigger 45 Controller support part 451 Front rib 452 Rear rib 453 Left rib 455 Upper contact part 456 Lower contact part 461 Front rib 462 Rear Side rib 463 Right side rib 465 Upper contact part 466 Lower contact part 47 Controller (electrical material part)
48 Biasing damper part (part support part)
49 Molding material storage chamber 50 Battery mounting part 51 Front battery mounting part 52 Rail part 521, 522 Guide groove part 53 (63) Battery terminal connection part 531 (631) Positive terminal 532 (632) Negative terminal 533 (633) Signal side Terminal 54 (64) Concave portion 55 Front battery contact portion 56 Contact tip portion 561 Tip end face portion 562 Tip inclined surface portion 57 Press flat portion 59 Front communication hole 60 Partition wall body 61 Rear battery mounting portion 62 Rail portion 621, 622 Guide Groove portion 65 Rear battery contact portion 66 Contact tip portion 661 Tip facing surface portion 662 Tip inclined surface portion 67 Press flat portion 69 Rear communication hole 70 Exterior member 71 Rubber bumper portion 73 Holding recess 75 Pin-shaped member (mounting contact portion)
76 Exposed end 77 Chamfered portion 78 Abutting end surface 80 Reinforcement member 81 Face-to-face wall 82 Connecting wall 83 Left hooking portion 831, 841 Protruding end 832, 842 Guide outer edge 84 Right hooking portion 850 Assembly recess 85 Insertion recess 87 , 88 Hook recess 871, 881 Hook recess 872, 882 Guide recess wall 90 Rechargeable battery B Hammer bit (tip tool)

Claims (7)

An electric tool that has a battery mounting portion that slides and mounts a rechargeable battery and that is driven by power supplied from the rechargeable battery mounted on the battery mounting portion,
The molding member that forms the battery mounting portion is formed by a combination of a first molding member and a second molding member that are divided before and after the sliding direction in which the rechargeable battery is mounted on the battery mounting portion.
The battery mounting portion is provided with a guide groove portion that guides a slide for mounting the rechargeable battery by fitting a guide male portion provided in the rechargeable battery in a sliding direction.
A reinforcing member that covers and covers the guide groove portion is assembled to a part of the guide groove portion where the guide male portion slides.
The reinforcing member is assembled from the portion where the first molded member and the second molded member face each other before being united toward the first molded member and the second molded member. And
When the battery mounting portion is formed by combining the first molded member and the second molded member with the reinforcing member, the reinforcing member is controlled so as to be prevented from coming off from the guide groove portion. An electric power tool characterized in that a latching portion is provided to be latched with respect to a place where the reinforcing member is assembled. The power tool according to claim 1,
The said reinforcing member has comprised the U shape which encloses 3 directions, when it sees in a sliding direction, The electric tool characterized by the above-mentioned. In the electric tool according to claim 2,
The power tool according to claim 1, wherein the hooking portion is provided on each of two opposing surfaces of the U-shape of the reinforcing member. In the electric tool according to any one of claims 1 to 3,
The hooking portion is inclined with respect to the direction in which the first molded member and the second molded member are combined, and the reinforcing member is assembled to the position by combining the first molded member and the second molded member. An electric tool characterized in that a guide outer edge portion for guiding the reinforcing member is provided so as to be positioned on the power tool. In the electric tool according to any one of claims 1 to 4,
The electric tool according to claim 1, wherein the reinforcing member is mounted near the insertion slot end of the guide groove where the guide male part starts to be fitted. In the electric tool according to any one of claims 1 to 5,
The reinforcing member is provided at a position where the guide groove portion is assembled when the first molded member and the second molded member are separated by releasing the coalescence of the first molded member and the second molded member. An electric tool characterized by being configured to be detachable from the power tool. In the electric tool according to any one of claims 1 to 6,
A plurality of the battery mounting portions are provided,
The reinforcing member is assembled with both of the pair of guide groove portions provided in the battery mounting portion.

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