Striking tool

Abstract

To provide a technology contributing to efficiency improvement of fastening work in a striking tool.SOLUTION: A striking tool is equipped with a housing, a motor, and a controller. The housing regulates a drive shaft. The controller is configured to control the action of the striking tool. The housing includes a first housing and a second housing coupled to the first housing. The second housing stores at least the controller. At least one electric wire extending from the controller and at lease one component disposed in the first housing are connected with each other outside the housing.SELECTED DRAWING: Figure 10

Description

Technical Field

[0001] The present disclosure relates to a percussion tool configured to drive a tip tool linearly.

Background Art

[0002] A percussion tool drives a tip tool linearly along a drive shaft by intermittently striking one end of the tip tool to perform a machining operation on a workpiece. Many percussion tools include a controller that controls the operation of the percussion tool. For example, Patent Document 1 discloses that a controller controls the rotational speed of a motor according to the pressing of a tip tool against a workpiece.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] A percussion tool includes various components (for example, a motor, a switch) that require wiring work with a controller. Efficiency improvement of such wiring work is desired.

[0005] One non-limiting object of the present disclosure is to provide a technique that contributes to improving the efficiency of wiring work in a percussion tool.

Means for Solving the Problems

[0006] According to one non-limiting aspect of the present disclosure, there is provided a percussion tool configured to drive a tip tool linearly along a drive shaft by striking the tip tool. This percussion tool includes a housing and a controller.

[0007] The housing defines the drive shaft. The controller is configured to control the operation of the striking tool. The housing includes a first housing and a second housing connected to the first housing. The second housing accommodates at least the controller. At least one wire extending from the controller and at least one component located in the first housing are connected to each other outside the housing.

[0008] Furthermore, "located in the first housing" includes cases where the component is located inside the first housing, and cases where it is located outside the first housing and supported (held) by the first housing. Non-limiting examples of "components located in the first housing" include motors, switches, and terminals that can be electrically connected to a battery.

[0009] Furthermore, the following three non-limiting embodiments describe the configuration in which at least one wire extending from a controller housed in a second housing and at least one component located in the first housing are "connected outside the housing." The first embodiment is one in which at least one wire extending from the controller and at least one wire extending from at least one component (typically a motor) located inside the first housing are directly connected outside the housing. The second embodiment is one in which at least one wire extending from the controller and at least one wire extending from at least one component (typically a motor) located inside the first housing are connected outside the housing via at least one connecting component (connector, coupler, terminal, etc.) separate from the wires. The third embodiment is one in which at least one wire extending from the controller is directly connected outside the housing to at least one component supported (held) by the first housing. In the following description, the expression "connected outside the housing" encompasses the above three embodiments unless otherwise explicitly limited.

[0010] According to this embodiment of the striking tool, the assembler of the striking tool can easily perform the wiring work between the controller housed in the second housing and at least one component located in the first housing while visually inspecting the wiring from outside the housing. Therefore, the efficiency of the wiring work is improved. [Brief explanation of the drawing]

[0011] [Figure 1] This is a perspective view of a hammer according to an embodiment of the present disclosure. [Figure 2] This is a front view of the hammer. [Figure 3] This is a cross-sectional view along line III-III in Figure 2. [Figure 4] Figure 3 shows a cross-sectional view along the line IV-IV. [Figure 5] This is a magnified view of a portion of Figure 4. [Figure 6] This is a top view of the hammer with the top cover removed. [Figure 7] This is a perspective view of the controller case with the controller assembly housed inside. [Figure 8] This is a perspective view of the controller case. [Figure 9] Another perspective view of the controller case. [Figure 10] This is a perspective view of the Hammer with the right-side handle and battery housing cover removed. [Figure 11] This is a right-side view of the Hammer with the top cover, right-side handle, and battery housing cover removed. [Figure 12] Figure 4 shows a cross-sectional view along the line XII-XII. [Figure 13] Figure 4 shows a cross-sectional view along the line XIII-XIII. [Figure 14] This is a perspective view of the Hammer with the left-side handle and battery housing cover removed. [Figure 15] This is a left side view of the Hammer with the top cover, left handle, and battery housing cover removed.

Best Mode for Carrying Out the Invention

[0012] In a non-limiting embodiment of the present disclosure, the second housing may include a first portion that houses a controller and a second portion connected to the first portion. At least one wiring recess (notch) may be formed at the connection end of the first portion with the second portion or at the connection end of the second portion with the first portion. The at least one recess may communicate the inside and the outside of the housing in a state where the first portion and the second portion are connected. According to this embodiment, an assembler can easily lead out an electric wire (and an electric wire extending from a component (for example, a motor) housed in the first housing) extending from the controller housed in the second housing to the outside of the housing by simply connecting the first portion and the second portion in a state where the electric wire passes through the at least one recess. Also, since the wiring process may be performed before or after the connection of the first portion and the second portion, work efficiency and convenience are improved.

[0013] In addition to or instead of the above embodiment, the impact tool may further include at least one battery mounting portion arranged outside the housing and configured such that a battery is removably mounted. The at least one battery mounting portion is supported by the housing outside the housing and may include a terminal electrically connectable to the terminals of the battery in response to the mounting of the battery. At least one electric wire extending from the controller may include at least one terminal electric wire directly connected to the terminal. According to this embodiment, in addition to improving the efficiency of the wiring work, the number of parts can be reduced.

[0014] In addition to or instead of the above-described embodiment, the impact tool may further include a motor housed in the first housing. The second housing may be configured to cover at least a part of the first housing. Further, the second housing may be connected to the first housing via at least one elastic member so as to be integrally movable in a first direction parallel to the drive shaft with respect to the first housing. According to this embodiment, a housing having a vibration isolation structure is provided. Therefore, even if vibration in the first direction occurs in the first housing due to the driving of the motor, it is possible to suppress the transmission of the vibration to the controller housed in the second housing. Thereby, the controller can be protected from vibration. Further, since the electric wire disposed outside the second housing does not contact the first housing during vibration of the first housing, deterioration of the electric wire can be suppressed.

[0015] In addition to or instead of the above-described embodiment, the second housing may have an inner wall. A passage may be defined in the second housing, separated from the first housing by the inner wall. At least one electric wire extending from the controller may include an electric wire for the motor connected to the motor. The electric wire extending from the motor may pass through the passage and extend outside the second housing and be connected to the electric wire for the motor. According to this embodiment, an assembler can easily connect the electric wire extending from the controller and the electric wire extending from the motor outside the housing. Further, during vibration of the first housing, the possibility that the portion of the electric wire extending from the motor and disposed inside the second housing contacts the first housing can be reduced, and deterioration of the electric wire can be suppressed.

[0016] In addition to, or in place of, the above embodiments, the housing may further include at least one handle having a gripping portion. The at least one handle may be connected to and fixed to the housing on the outside of the housing. Furthermore, the at least one handle may at least partially cover at least one wire located on the outside of the housing. According to this embodiment, at least a portion of the wire located on the outside of the housing can be protected using the at least one handle.

[0017] In addition to, or in lieu of, the above embodiment, at least one handle may include two handles positioned on either side of the housing in a second direction perpendicular to the drive shaft. The gripping portions of each of the two handles may extend along an axis extending in the second direction. This embodiment provides a striking tool suitable for use in a position where the user grips the gripping portions with both hands and the tip tool is pointed downward.

[0018] In addition to, or in lieu of, the above embodiment, at least one battery mounting section may include two battery mounting sections located on both sides of the housing in a second direction perpendicular to the drive shaft. According to this embodiment, the weight balance in the second direction when the battery is installed can be optimized. Therefore, the user can hold the impact tool in a more stable position and perform impact work.

[0019] In addition to, or in lieu of, the above embodiments, each of the two battery mounting sections may include a wall portion that protrudes outward from the housing. The terminals may be supported by the wall portion. At least one terminal wire may include two terminal wires connected to the terminal through openings formed in the respective walls of the two battery mounting sections. According to this embodiment, an efficient path for the wires to the terminals of the two battery mounting sections is formed.

[0020] In addition to or in place of the above embodiments, the second housing may include a second housing body and a case connected and fixed to the second housing body for housing the controller. The case may have a function for temporarily fastening the controller. According to this embodiment, the assembly worker can handle the controller and the case as a single unit while the controller is temporarily fastened to the case, making it easier to connect and fix the case to the second housing.

[0021] Hereinafter, with reference to the drawings, an electric hammer (also called a breaker hammer or demolition hammer) 1, representing a typical and non-limiting embodiment of the present disclosure, will be described. The hammer 1 is an example of a striking tool configured to drive a tip tool (e.g., a hammer bit) linearly along a predetermined drive axis A1.

[0022] First, let me explain the general configuration of Hammer 1.

[0023] As shown in Figures 1 and 2, the hammer 1 mainly comprises a housing 11, a tool holder 15, a pair of handles 4, and a pair of battery housings 5.

[0024] The housing 11 is an elongated housing that extends along the drive shaft A1. The tool holder 15 is connected to one end of the housing 11 in the longitudinal direction and extends along the drive shaft A1. The tool holder 15 is configured to detachably hold a cutting tool (not shown). Each handle 4 includes a gripping portion 42 that is grasped by the user. The handles 4 are connected to the other end of the housing 11 in the longitudinal direction such that each gripping portion 42 protrudes from the housing 11 in opposite directions. In this embodiment, the gripping portions 42 extend along an axis A2 that is substantially perpendicular to the drive shaft A1. In this arrangement, the housing 11 and the two handles 4 form a T-shape when viewed in directions perpendicular to the drive shaft A1 and axis A2. A trigger 43 is provided on the gripping portion 42 of one of the two handles 4.

[0025] Generally, the operator uses the hammer 1 by gripping the gripping portion 42 with both their left and right hands, with the tip tool mounted on the tool holder 15 protruding downwards. Therefore, for the sake of explanation, the direction of extension of the drive shaft A1 (which can also be called the long axis direction of the housing 11) is defined as the vertical direction of the hammer 1. In the vertical direction, the side where the tool holder 15 is located is defined as the lower side of the hammer 1, and the opposite side (where the handle 4 is located) is defined as the upper side of the hammer 1. The direction of extension of shaft A2 (gripping portion 42) is defined as the left-right direction of the hammer 1. In the left-right direction, the side where the gripping portion 42 with the trigger 43 is located is defined as the right side of the hammer 1, and the opposite side (where the gripping portion 42 without the trigger 43 is located) is defined as the left side of the hammer 1. The direction perpendicular to the vertical and left-right directions is defined as the front-back direction of the hammer 1.

[0026] A battery 59 can be installed in the battery housing 5. In this embodiment, two battery housings 5 ​​are provided below and adjacent to the two handles 4. The hammer 1 operates using the two batteries 59 installed in the battery housings 5 ​​as its power source. Specifically, when the trigger 43 is pressed by the user, the motor 71 (see Figures 3 and 4) is driven, and the tip tool is driven in a linear direction.

[0027] The following describes the detailed configuration of Hammer 1.

[0028] As shown in Figures 3 and 4, the housing 11 includes a first housing 2 and a second housing 3. The first housing 2 and the second housing 3 are connected so as to be able to move relative to each other in the extending direction of the drive shaft A1, i.e., in the vertical direction.

[0029] The following describes the first housing 2 and the elements arranged inside it.

[0030] The first housing 2 houses the motor 71 and the drive mechanism for the cutting tool (motion conversion mechanism 73 and impact mechanism 75). For this reason, the first housing 2 may also be called the drive mechanism housing. The first housing 2 includes an upper housing section 21 and a lower housing section 26 connected to the lower end of the upper housing section 21.

[0031] The upper housing 21 mainly houses the motor 71 and a part of the motion conversion mechanism 73. The motor 71 is located within the upper end of the upper housing 21. In this embodiment, the motor 71 is a brushless motor. The motion conversion mechanism 73 is located below the motor 71. The motion conversion mechanism 73 is a mechanism that converts rotational motion into linear motion, and in this embodiment, a well-known piston-crank mechanism is employed. Briefly, the motion conversion mechanism 73 includes a crankshaft 731 having an eccentric pin and being operably connected to the output shaft 711 of the motor 71, and a piston 735 operably connected to the eccentric pin via a connecting rod 733. The motor 71 and the motion conversion mechanism 73 are arranged such that the rotation axis of the output shaft 711 and the rotation axis of the crankshaft 731 extend in the front-rear direction perpendicular to the drive shaft A1.

[0032] The lower housing portion 26 is generally formed in a cylindrical shape and is also referred to as the barrel portion. In this embodiment, the lower housing portion 26 is a separate component from the upper housing portion 21, fixed to the lower end of the upper housing portion 21, and extending along the drive shaft A1. A tool holder 15 is fixed to the lower end of the lower housing portion 26. A cylinder 261 is housed in the lower housing portion 26. A piston 735 and an impact mechanism 75 are arranged inside the cylinder 261. The piston 735 reciprocates and slides vertically within the cylinder 261 in conjunction with the drive of the motor 71. The impact mechanism 75 in this embodiment has a well-known configuration including a striker 751 and an impact bolt 753. The impact mechanism 75 operates in response to pressure fluctuations generated in the air chamber 750 by the reciprocating motion of the piston 735, driving the tip tool linearly along the drive shaft A1.

[0033] The following describes the second housing 3 and the elements arranged inside it.

[0034] As shown in Figures 1 to 5, the second housing 3 is, as a whole, a box-shaped body with an open lower end, and is configured to cover the upper part of the first housing 2 (more specifically, roughly the entire upper housing section 21). For this reason, the second housing 3 may also be referred to as an outer housing or outer cover. The second housing 3 in this embodiment includes a main cover 31, a top cover 34, and a controller case 37, all of which are connected and fixed to each other.

[0035] The main cover 31 is a cylindrical member and is arranged to surround the outer periphery of the upper housing portion 21. The main cover 31 includes a pair of left and right side wall portions 311, and a front wall portion 313 and a rear wall portion 315 that connect the side wall portions 311. In this embodiment, the main cover 31 is formed by two halves (left shell and right shell) that are connected and fixed to each other in the left-right direction.

[0036] The top cover 34 is, as a whole, a box-shaped body with an open lower end, and includes an upper wall portion 341 and a peripheral wall portion 343 that protrudes downward from the periphery of the upper wall portion 341. The lower end of the peripheral wall portion 343 is fixed to the upper end of the main cover 31 with a number of screws. The upper end of the first housing 2 (upper housing portion 21) (specifically, part of the housing portion for the motor 71) protrudes above the upper end of the main cover 31, that is, into the top cover 34. However, the upper end of the first housing 2 is below the upper wall portion 341 of the top cover 34, and a space is formed between the upper end of the first housing 2 and the top cover 34. The controller case 37 is arranged in this space within the top cover 34 and is connected to the top cover 34.

[0037] As shown in Figure 5, the controller case 37 is a case that mainly houses (holds) the controller 70. The controller 70 is configured to control the operation of the hammer 1 (such as driving the motor 71). In this embodiment, the controller 70 is a microcomputer including a CPU, ROM, memory, etc., and is mounted on a control board. The microcomputer is supported by a heat dissipation member 705, and together with the heat dissipation member 705, it constitutes an integrated controller assembly 700. However, the controller 70 may employ control circuits other than a microcomputer. Also, the microcomputer (control circuit) does not need to be integrated with the heat dissipation member 705.

[0038] As shown in Figures 5 to 8, a recess 371 opening upwards is formed in the center of the controller case 37. The recess 371 has a shape that matches the controller assembly 700 (a rectangular shape that is long from left to right when viewed from above), and the controller assembly 700 is fitted into this recess 371.

[0039] The controller case 37 has two elastically deformable (flexible) locking pieces 379. The two locking pieces 379 are provided adjacent to the left and right edges of the recess 371, respectively. The tips of the locking pieces 379 have claws (projections) that protrude toward the center of the recess 371. When an assembler places the controller assembly 700 into the controller case 37, the locking pieces 379 flex away from the recess 371, allowing the controller assembly 700 to be fitted into the recess 371. As the locking pieces 379 return to their original positions in response to the controller assembly 700 being fitted into the recess 371, the claws of the locking pieces 379 engage with the upper surface of the controller assembly 700, preventing the controller assembly 700 from coming out of the recess 371.

[0040] In this way, the locking piece 379 snaps into the controller assembly 700, thereby temporarily fastening (temporarily securing) the controller assembly 700 to the controller case 37. Note that "temporarily fastening" means fixing or holding in a state that allows for some movement or removal by a certain amount of external force.

[0041] The controller case 37 is fixed to the top cover 34 (specifically the upper wall portion 341) from below with multiple screws, with the controller assembly 700 housed in the recess 371 facing the upper wall portion 341 of the top cover 34. The bottom wall portion 370 of the controller case 37 is spaced upward from the upper end of the first housing 2 (see Figure 5).

[0042] In this embodiment, since the controller case 37 has a temporary fastening function, the assembler can handle the controller 70 integrally with the controller case 37. For example, even if the controller case 37 is in an upside-down position with the bottom wall 370 facing upwards and the controller assembly 700 facing downwards, the controller assembly 700 will not fall out of the controller case 37. Therefore, the assembler can place the top cover 34 on the workbench with its lower opening facing upwards, turn the controller case 37 upside down, and easily fasten it to the top cover 34 from above with screws. This improves the efficiency of the assembly work.

[0043] In this embodiment, the controller case 37 supports the controller 70, as well as the main power switch 77 and the wireless unit 78 (see Figure 6). The main power switch 77 is a switch for energizing the hammer 1. When the main power switch 77 is turned ON, power is supplied from the battery 59 to the controller 70 and the like. The wireless unit 78 is a known device capable of wirelessly sending and receiving signals to and from a device used with the hammer 1 (for example, a dust collector). The wireless unit 78 is configured to communicate with the device used with the hammer 1 for correspondence (so-called pairing) when the activation button 781 is turned ON.

[0044] The main power switch 77 and the wireless unit 78 are fitted into recesses 375 and 376 (see Figure 8) provided in the controller case 37 adjacent to recess 371. Although detailed illustrations are omitted, the main power switch 77 and the wireless unit 78 are electrically connected to the controller 70 by wires extending from their respective undersides. Furthermore, the activation buttons 781 of the main power switch 77 and the wireless unit 78 are exposed to the outside through an opening formed in the top cover 34 when the controller case 37 is fixed to the top cover 34 (see Figure 1). Therefore, the user can manually operate the activation buttons 781 of the main power switch 77 and the wireless unit 78 from outside the top cover 34.

[0045] Furthermore, as shown in Figures 6 to 9, the controller case 37 has a configuration for guiding various wires 38 extending from the controller 70. More specifically, wire guides 372 are provided on the left and right sides of the controller case 37. The wire guides 372 are wall sections that define passages 373 that communicate with the internal space of the recess 371. In this embodiment, the wire guides 372 are wall sections with a substantially U-shaped cross-section, and each passage 373 extends downward from the recess 371 toward the end of the controller case 37, curving gently. The wires 38 extending from the controller 70 are divided into a wire group 38L extending to the left and a wire group 38R extending to the right, and are guided to the outside of the controller case 37 by the left wire guide 372 and the right wire guide 372, respectively. These wires 38 are connected to terminals 651 (see Figure 6) of the battery mounting section 6, etc. The wiring for Hammer 1 will be explained in detail later.

[0046] The following describes the handle 4 and the elements arranged inside it. For the sake of clarity, when referring to both handles 4 collectively, or when referring to either one of the two without distinction, the term "handle 4" will be used below. Furthermore, when referring specifically to the handle 4 equipped with the trigger 43, it will be called the right handle 4R, and when referring specifically to the handle 4 without the trigger 43, it will be called the left handle 4L.

[0047] As shown in Figure 5, the two handles 4 are arranged substantially symmetrically with respect to a plane P (a plane containing the rotation axis of the drive shaft A1 and the output shaft 711 of the motor 71) that passes through the left-right center of the hammer 1. Furthermore, the two handles 4 have substantially identical configurations, except that only the right handle 4R is configured to hold the trigger 43. In this embodiment, the handles 4 are separate components from the second housing 3 and are connected to and fixed to the second housing 3. Each handle 4 includes a base portion 41 and a gripping portion 42.

[0048] The base portion 41 is the part that is attached to the side wall portion 311 of the second housing 3 (more specifically, the main cover 31). The base portion 41 as a whole is a box-shaped portion that opens to the side and is configured to cover roughly the upper half of the side wall portion 311. The opening end of the base portion 41 is fixed to the side wall portion 311 with several screws. In this way, the handle 4 is integrated with the second housing 3.

[0049] The gripping portion 42 is formed in a bottomed cylindrical shape and is connected to the base portion 41 so that the internal space of the gripping portion 42 and the internal space of the base portion 41 are in communication. In this embodiment, the base portion 41 and the gripping portion 42 are formed integrally, but the base portion 41 and the gripping portion 42 may be formed as separate members and fixed to each other. An opening is formed only at the top of the gripping portion 42 of the right handle 4R to expose the trigger 43 to the outside.

[0050] The trigger 43 is supported by the right handle 4R so as to be rotatable in the vertical direction. Normally, a portion of the trigger 43 is in an off position, protruding upward from the opening of the grip portion 42 of the right handle 4R due to the biasing force of a spring. The trigger 43 rotates downward in response to the user gripping the grip portion 42 of the right handle 4R with their hand and pressing the trigger 43 downward.

[0051] A switch 72 for starting the motor 71 is housed within the base portion 41 of the right handle 4R. More specifically, several ribs protrude to the right from the outer surface of the right side wall portion 311 of the main cover 31. The switch 72 is fitted into a recess defined by the ribs and supported by the right side wall portion 311 (see Figure 10). While the trigger 43 is in the off position, the switch 72 remains in the off state. On the other hand, when the trigger 43 is pressed by the user and rotated to the on position, a part of the trigger 43 presses against the plunger of the switch 72, turning the switch 72 into the on state. The controller 70 drives the motor 4 while the trigger 4 is in the on state.

[0052] The configuration of the battery housing 5 is described below.

[0053] As shown in Figure 5, the two battery housings 5 ​​are positioned adjacent to each other directly below the two handles 4, and protrude to the left and right from the side walls 311 of the second housing 3 (specifically, the main cover 31). The two battery housings 5 ​​are positioned substantially symmetrically with respect to the plane P and have substantially identical configurations. This arrangement of the battery housings 5 ​​allows for optimization of the lateral weight balance of the hammer 1 when the two batteries 59 are installed. Furthermore, when the two batteries 59 are installed, the center of gravity of the entire hammer 1 shifts downward when the tip tool is pointed downward, allowing the user to hold the hammer 1 in a stable position and perform striking work.

[0054] As shown in Figures 5, 10, and 11, the battery housing 5 is formed by an upper wall portion 51, a lower wall portion 52, a rear wall portion 53, and a side wall portion 54. The side wall portion 54 is a generally rectangular wall portion corresponding to the shape of the battery 59, and is spaced laterally (left or right) from the side wall portion 311 of the main cover 31 and is arranged generally parallel to the side wall portion 311. The upper wall portion 51, the lower wall portion 52, and the rear wall portion 53 each protrude laterally (left or right) from the side wall portion 311 of the main cover 31 and are connected to the upper edge, lower edge, and rear edge of the side wall portion 54. With this configuration, the battery housing 5 defines a battery housing space that is open to the front.

[0055] In this embodiment, the upper wall 51, the lower wall 52, and the rear wall 53 have a double-wall structure. That is, the upper wall 51, the lower wall 52, and the rear wall 53 each have an internal space. The internal spaces of the upper wall 51, the lower wall 52, and the rear wall 53 are connected to each other and together form the internal space 50 of the battery housing 5.

[0056] In this embodiment, the battery housing 5 includes a base portion 501 integrally formed with the side wall portion 311 of the main cover 31, and a cover portion 502 which is a separate component from the base portion 501 and is fixed to the base portion 501 with a plurality of screws (see Figure 10). The base portion 501 includes the upper wall portion 51, the lower wall portion 52, and roughly half of the rear wall portion 53 in the left-right direction. The cover portion 502 includes the remaining roughly half of the upper wall portion 51, the lower wall portion 52, and the rear wall portion 53, as well as the side wall portion 54.

[0057] The battery housing 5 has a battery mounting section 6. The battery mounting section 6 is configured to removably receive a battery 59. The battery 59 is a well-known rechargeable battery (also called a battery pack) and has a generally rectangular parallelepiped case and a plurality of cells housed within the case. The battery 59 can be selectively attached to various power tools, including the hammer 1.

[0058] The battery mounting section 6 includes an engagement section 61 that can physically engage with the battery 59, and a terminal section 65 that can be electrically connected to the terminals of the battery 59.

[0059] Although detailed illustrations are omitted as the configuration is well known, the engaging portion 61 includes a pair (two) rails. The rails are provided on the lower side of the upper wall portion 51, adjacent to the upper wall portion 51. The rails are spaced apart in the left-right direction and extend parallel to each other in the front-rear direction. The pair of rails are slidably engaged with a pair of grooves provided at the upper end of the battery case 59.

[0060] The terminal section 65 includes a plate-shaped base (support) 655 and a plurality of terminals 651 supported by the base 655. The plurality of terminals 651 include at least one pair of electrode terminals. The terminal section 65 may also be referred to as a terminal assembly or terminal block. The terminal section 65 is sandwiched and supported (held) between the two halves of the upper wall section 51 by the connection of the base section 501 and the cover section 502 of the battery housing 5. As described above, the upper wall section 51 has a double-wall structure. Specifically, the upper wall section 51 includes a first upper wall 511 and a second upper wall 512 located below the first wall. The base 655 of the terminal section 65 is housed in the internal space of the upper wall section 51 formed between the first upper wall 511 and the second upper wall 512. A portion of the terminals 651 is exposed on the upper side of the base 655. Another portion of the terminal 651 protrudes downward from the upper wall portion 51 through an opening formed in the second upper wall 512.

[0061] When the user slides the battery 59 backward from the front to a predetermined position within the battery housing 5, with the groove of the battery 59 engaged with the rail of the engagement portion 61, the terminals of the battery 59 and the terminals 651 of the battery mounting portion 6 come into contact and make an electrical connection. When the battery 59 is positioned in the predetermined position, the locking member of the battery 59 engages with a recess provided in the engagement portion 61, and the battery 59 is locked in the predetermined position. When the battery 59 is mounted in the battery mounting portion 6 in this way, the battery housing 5 substantially covers all parts of the battery 59 except for the front. Therefore, the battery housing 5 also functions as a protector that shields the battery 59 from external forces.

[0062] Furthermore, an LED light 79 is held at the lower end of the battery housing 5. More specifically, the LED light 79 is fitted into and supported in a recess provided in the lower wall portion 52. The LED light 79 can emit light towards the work area (the area where the tip of the cutting tool is placed) through an opening provided in the lower wall portion 52. The controller 70 controls the operation of the LED light 79.

[0063] The following describes the connection structure between the first housing 2 and the second housing 3.

[0064] As described above, in this embodiment, the first housing 2 and the second housing 3 are connected so as to be able to move relative to each other in the vertical direction. As described above, the second housing 3 integrates two handles 4 and two battery housings 5. Therefore, the entire second housing 3, handles 4, and battery housings 5 ​​can move relative to the first housing 2 in the vertical direction as a single unit.

[0065] More specifically, as shown in Figure 5, in the vertical direction, a pair of first elastic members 111 and a pair of second elastic members 112 (only one is shown in Figure 5) are interposed between the first housing 2 and the second housing 3. In this embodiment, compression coil springs are used for each of the first elastic members 111 and the second elastic members 112. The first housing 2 and the second housing 3 can move relative to each other in the vertical direction (in the direction of moving towards each other and in the direction of moving away from each other) while the biasing forces of the first elastic members 111 and the second elastic members 112 are acting on them.

[0066] The first elastic member 111 is interposed between the first housing 2 and the second housing 3 below the gripping portion 42 (axis A2). In this embodiment, the two first elastic members 111 are arranged substantially symmetrically with respect to the drive shaft A1 (more specifically symmetrically with respect to the plane P). More specifically, spring receiving portions 212 are provided on the left and right sides of the upper housing portion 21 of the first housing 2. Spring receiving portions 312 are provided on the left and right side walls 311 of the main cover 31 of the second housing 3. The spring receiving portion 312 of the second housing 3 is positioned above the spring receiving portion 212 of the first housing 2 so as to face it. The first elastic member 111 is positioned to extend vertically between the spring receiving portions 212 and the spring receiving portion 312.

[0067] The second elastic member 112 is interposed between the first housing 2 and the second housing 3 above the gripping portion 42 (axis A2). In this embodiment, the two second elastic members 112 are arranged substantially symmetrically with respect to the drive shaft A1. More specifically, the upper surface of the upper housing portion 21 of the first housing 2 is provided with two spring receiving portions 213 (only one is shown in Figure 5). The lower surface of the controller case 37, which is fixed to the top cover 34 of the second housing 3, is provided with two spring receiving portions 374 (see Figure 9). The spring receiving portions 374 of the controller case 37 are positioned above the spring receiving portions 213 of the first housing 2 so as to face them. The second elastic member 112 is positioned to extend vertically between the spring receiving portions 213 and 374.

[0068] In the process of connecting the first housing 2 and the second housing 3, the main cover 31 is first connected to the first housing 2 via the first elastic member 111. Then, the top cover 34 is connected to the first housing 2 via the second elastic member 112, and the top cover 34 is fixed to the main cover 31 with screws.

[0069] Furthermore, the housing 11 is equipped with a guide structure for guiding the relative vertical movement between the first housing 2 and the second housing 3.

[0070] As shown in Figures 5 and 12, two first guide portions 114 are provided in the vicinity of the gripping portion 42 (axis A2) (approximately the same position as the gripping portion 42) in the vertical direction. In this embodiment, the two first guide portions 114 are arranged substantially symmetrically with respect to the plane P. In this embodiment, each first guide portion 114 includes a guide cylinder 115 and a guide groove 116. The guide cylinder 115 is a cylindrical metal member. The two guide cylinders 115 are each fixed to the left and right sides of the upper housing portion 21 of the first housing 2 and extend vertically perpendicular to the axis A2. The guide groove 116 is a groove with a semicircular cross-section defined by a curved surface. The curved surface of the guide groove 116 aligns with the outer circumferential surface of the guide cylinder 115. The two guide grooves 116 are each formed inside the left and right side walls 311 of the main cover 31 of the second housing 3. Each guide tube 115 is partially positioned within a guide groove 116 and is slidable vertically along the guide groove 116.

[0071] Furthermore, as shown in Figures 5 and 13, two second guide portions 117 are provided below the first guide portion 114 in the vertical direction. More specifically, the second guide portions 117 are provided in the vicinity of the battery housing 5 (approximately the same position as the battery housing 5) in the vertical direction. In this embodiment, the two second guide portions 117 are arranged substantially symmetrically with respect to the plane P. In this embodiment, each second guide portion 117 includes a guide projection 118 and two guide ribs 119. The guide projection 118 is a projection with a rectangular cross-section. The two guide projections 118 are formed on the left and right sides of the upper housing portion 21 of the first housing 2, respectively, and extend in the vertical direction. The two guide ribs 119 protrude from the inside of the left and right side walls 311 of the main cover 31 of the second housing 3, respectively, on the front and rear sides of the guide projections 118. Each guide projection 118 is partially positioned between the guide ribs 119 and is slidable vertically along the guide ribs 119.

[0072] With the above configuration, the first housing 2 and the second housing 3 are initially biased by the first elastic member 111 and the second elastic member 112 to move away from each other in the vertical direction (i.e., downward and upward), and are positioned in the initial position (the position shown in Figure 5). On the other hand, during striking operations, vibration occurs in the first housing 2 in the direction of extension of the drive shaft A1 (i.e., vertical direction). In response to this vibration, the first housing 2 and the second housing 3 move relative to each other while being subjected to the biasing force of the first elastic member 111 and the second elastic member 112. During this time, the first guide portion 114 and the second guide portion 117 stably guide the relative vertical movement of the first housing 2 and the second housing 3. With this vibration-damping structure, the transmission of vibration from the first housing 2 to the second housing 3, and consequently to the grip portion 42 held by the user, can be suppressed. In addition, the controller 70 housed in the second housing 3 can be effectively protected from vibration.

[0073] The following describes the wiring in Hammer 1, specifically the arrangement and connection (wiring work) of various electrical wires.

[0074] As described above, the left and right wire guides 372 guide the wire groups 38L and 38R extending from the controller 70 to the outside of the controller case 37, respectively. More specifically, as shown in Figure 7, the left wire guide 372 guides wire group 38L toward the lower left, and the right wire guide 372 guides wire group 38R toward the lower right. As shown in Figure 6, the tip of each wire guide 372 is located in the left-right direction at approximately the same position as the outer surface of the first housing 2, or slightly toward the second housing 3 side of the outer surface of the first housing 2 (between the outer surface of the first housing 2 and the inner surface of the second housing 3). Therefore, the wire guides 372 guide the wire groups 38L and 38R toward the outside of the first housing 2, respectively, in the left-right direction. The wire groups 38L and 38R each emerge from their corresponding wire guides 372, extend downward within the second housing 3 (top cover 34), and exit the second housing 3 through openings 30L and 30R provided in the second housing 3.

[0075] The openings 30L and 30R are openings that connect the internal and external spaces of the second housing 3 and are provided to guide the electric wires 38 extending from the controller case 37 located inside the second housing 3 to the outside of the second housing 3. In this embodiment, the openings 30L and 30R are recesses (notches) formed at the upper ends of the left and right side walls 311 of the main cover 31, respectively. The openings 30L and 30R are each located below the electric wire guide 372 and at approximately the same position as the electric wire guide 372 in the front-rear direction. Therefore, the electric wire groups 38L and 38R are each guided by the electric wire guide 372 toward the openings 30L and 30R, and reach the openings 30L and 30R via the shortest route.

[0076] As shown in Figures 6, 14, and 15, the left wire group 38L exits the second housing 3 through the opening 30L and extends to the outside of the left side wall 311 and inside the handle 4. The wire group 38L includes a terminal wire 381 connected to the terminal 651 of the left battery mounting section 6, an LED wire 382 connected to the LED light 79, and a motor wire 383 connected to the wire 715 extending from the motor 71.

[0077] One end of the terminal wire 381 is directly (physically) connected to the terminal 651 of the terminal section 65. As described above, the terminal section 65 is supported by the upper wall section 51 of the battery housing 5, with the base section 655 positioned within the upper wall section 51 of the battery housing 5. An opening 513 is formed in the area of ​​the first upper wall 511 of the upper wall section 341 that is directly above a portion of the terminal section 65. The terminal wire 381 is connected to the terminal 651 (the portion exposed above the base 655) within the upper wall section 51 by passing through this opening 513.

[0078] One end of the LED wire 382 is connected to an LED light 79 fixed to the lower wall 52 of the battery housing 5. More specifically, the LED wire 382 enters the internal space 50 of the battery housing 5 through an opening 513 in the upper wall 341 of the battery housing 5, extends to approximately the center of the lower wall 52, and is directly connected to the LED light 79.

[0079] In this way, the opening 513 forms an efficient path for the terminal wires 381 and LED wires 382 from the internal space of the handle 4 to the internal space 50 of the battery housing 5. Furthermore, the internal space 50 of the battery housing 5 is effectively utilized as a passage for the LED wires 382.

[0080] One end of the motor wire 383 is connected to the connector 384. The motor wire 383 is connected to the wire 715 extending from the motor 71 via the connector 384.

[0081] The electric wire 715 extending from the motor 71 extends rearward from the upper rear end (rear side of the motor 71) of the upper housing portion 21 of the first housing 2 to the outside of the first housing 2. Furthermore, the electric wire 715 extends inside the second housing 3 (main cover 31) and extends to the outside of the second housing 3 through an opening 301 provided in the second housing 3.

[0082] The opening 301 is an opening that connects the internal space and the external space of the second housing 3, and is provided to guide the electric wire 715 extending from the motor 71 to the outside of the second housing 3. In this embodiment, the opening 301 is a recess (notch) formed at the upper end of the rear end of the left side wall portion 311 of the main cover 31. The opening 301 is located behind the opening 30L through which the electric wire group 38L passes.

[0083] Furthermore, an inner wall (partition) 317 is provided inside the main cover 31. More specifically, the inner wall 317 is provided corresponding to roughly the left half of the rear wall 315 of the main cover 31 of the second housing 3 and the rear end of the left side wall 311. Gaps (spaces) are provided between the inner wall 317 and the outer surface of the upper housing 21, and between the inner wall 317 and the inner surfaces of the rear wall 315 and side wall 311. The electric wire 715 extends from the opening 301 to the outside of the second housing 3 through a passage 318 defined between the inner wall 317 and the inner surfaces of the rear wall 315 and side wall 311 of the main cover 31. The inner wall 317 protects the electric wire 715 by preventing it from coming into contact with the first housing 2.

[0084] One end of the electric wire 715 is connected to connector 716. The connector 384 of the motor wire 383 and the connector 716 of the electric wire 715 from the motor 71 are connected to each other, thereby electrically connecting the motor wire 383 and the electric wire 715 from the motor 71. Multiple ribs protrude to the left from the outer surface of the left side wall portion 311 of the main cover 31. The interconnected connectors 384 and 716 are fitted into recesses defined by the ribs and supported by the left side wall portion 311.

[0085] As shown in Figures 6, 10, and 11, the right-side wire group 38R exits the second housing 3 through the opening 30R and extends to the outside of the right side wall 311 and inside the handle 4. The wire group 38R includes a terminal wire 381 connected to the terminal 651 of the right-side battery mounting section 6, an LED wire 382 connected to the LED light 79, and a switch wire 385 connected to the switch 72 for starting the motor 71.

[0086] The wiring of the terminal wire 381 and LED wire 382 in the right-hand wire group 38R is substantially the same as the wiring of the terminal wire 381 and LED wire 382 in the left-hand wire group 38L. Specifically, the terminal wire 381 extends downward outside the right side wall 311, passes through an opening 513 formed in the upper wall 51 of the battery housing 5, and is directly connected to the terminal 651 within the upper wall 51. The LED wire 382 extends downward outside the right side wall 311, enters the internal space 50 of the battery housing 5 through the opening 513, passes through the internal space 50, and is directly connected to the LED light 79.

[0087] The switch wire 385 extends downward on the outside of the right side wall 311. One end of the switch wire 385 is directly connected to the switch 72, which is held by the rib of the side wall 311 as described above.

[0088] As described above, the various wires 38 extending from the controller 70 extend to the outside of the second housing 3 through the openings 30L and 30R. Therefore, the possibility of the wires 38 contacting the first housing during vibration of the first housing is effectively reduced, and deterioration of the wires 38 can be suppressed. For this reason, in the hammer 1 of this embodiment, no retaining member (fastener) is used to fix the wires 38 to the inner surface of the second housing 3 so that the wires 38 do not come into contact with the first housing 2.

[0089] In particular, in this embodiment, the openings 30L and 30R are provided at the upper ends of the left and right side walls 311 of the main cover 31. The upper ends of the side walls 311 are located in a position corresponding to the upper part of the first housing 2 in the vertical direction. Therefore, the distance over which the electric wires 38 extending from the controller 70 pass along the side of the first housing 2 is made relatively short, and the electric wires 38 can be led out to the outside of the second housing 3 at a position relatively close to the controller 70.

[0090] Furthermore, in this embodiment, the controller case 37 having the above-described configuration contributes to protecting the electric wire 38 within the second housing 3 and realizing an optimal route toward the openings 30L and 30R. Specifically, the bottom wall portion 370 prevents the electric wire 38 from coming into contact with the first housing 2 in the vertical direction. In addition, the electric wire guide 372 guides the electric wire 38 toward the openings 30L and 30R so as to move away from the first housing 2. By employing such a controller case 37, the possibility of the electric wire 38 coming into contact with the first housing 2 can be more reliably reduced.

[0091] Furthermore, compared to conventional methods, the assembly worker of the hammer 1 can easily connect the wire 38 extending from the controller 70 to other wires or components on the outside of the second housing 3.

[0092] Specifically, in conventional wiring structures, the wires 38 extending from the controller 70 housed in the top cover 34 and the wires extending from components located inside the main cover 31 (for example, the motor 71 housed in the first housing 2) are typically connected inside the housing 11 (second housing 3). In this case, the assembly worker must connect these wires directly or via separate connecting parts, then place them inside the housing 11 and connect the top cover 34 to the main cover 31. In this case, the assembly worker must place the connected wires inside the second housing 3 in a state where visual inspection is difficult, which reduces work efficiency. Also, there is a possibility that some of the wires may get caught between the top cover 34 and the main cover 31.

[0093] In contrast, in this embodiment, as described above, the motor wire 383 extending from the controller 70 and the wire 715 extending from the motor 71 extend to the outside of the second housing 3 through the openings 30L and 301, respectively. Therefore, assembly workers can easily connect the motor wire 383 and the wire 715 while visually inspecting them on the outside of the left side wall 311. Note that the motor wire 383 and the wire 715 may be connected directly without using connectors 384 and 716. Furthermore, the wiring process for connecting the motor wire 383 and the wire 715 may be performed before or after the top cover 34 is fixed to the main cover 31. This makes the wiring work more efficient. It also reduces the possibility that a part of the motor wire 383 or the wire 715 may be caught between the top cover 34 and the main cover 31.

[0094] In particular, in this embodiment, the openings 30L, 30R, and 301 are all recesses (notches) formed at the upper end of the side wall portion 311 of the main cover 31. Therefore, the assembly worker can easily lead the electric wires 383 and 715 to the outside of the second housing 3 simply by connecting the top cover 34 and the main cover 31 with the electric wires 383 and 715 passing through the corresponding openings 30L, 30R, and 301, respectively.

[0095] Furthermore, the terminal wire 381, LED wire 382, ​​and switch wire 385, like the motor wire 383, extend to the outside of the second housing 3 through openings 30L and 30R. Therefore, assembly workers can easily connect these wires to the terminal 651, LED light 79, and switch 72, respectively, which are supported on the outside of the second housing 3. In this embodiment, the terminal wire 381, LED wire 382, ​​and switch wire 385 are directly connected to the terminal section 65, LED light 79, and switch 72 without the need for separate connecting parts. Because openings 30L and 30R are recesses (notches), assembly workers can connect the top cover 34 and the main cover 31 with the terminal wire 381, LED wire 382, ​​and switch wire 385, which are already connected to the terminal section 65, LED light 79, and switch 72, passing them through openings 30L and 30R. Therefore, in addition to improving the efficiency of the wiring work, the number of parts can be reduced.

[0096] Furthermore, most of the wires located outside the second housing 3 are covered by the handle 4. After connecting the wires 38 extending from the controller 70 to the corresponding components, the assembler can attach the handle 4 to the second housing 3 (main cover 31). Thus, the handle 4 in this embodiment can protect the wires while facilitating the connection work.

[0097] Similarly, the remaining portion of the wires located outside the second housing 3 is covered by the battery housing 5. The battery housing 5 includes a base portion 501 integrated with the second housing 3 and a cover portion 502 connected to the base portion 501. After the assembly worker has connected the wires 38 extending from the controller 70 to the corresponding components and installed the components into the battery housing 5, the cover portion 502 can be attached to the base portion 501. Thus, the battery housing 5 of this embodiment can protect the wires while facilitating the connection work.

[0098] The correspondence between each component (feature) of the above embodiments and each component (feature) of the present disclosure or invention is shown below. However, each component of the embodiments is merely an example and does not limit each component of the present disclosure or invention.

[0099] Hammer 1 is an example of a "striking tool". Motor 71 is an example of a "component placed in the first housing". Openings 30L, 30R, and 301 are each an example of a "recess for wiring". First elastic member 111 and second elastic member 112 are each an example of an "elastic member". The upper wall portion 51 and opening 513 of the battery housing 5 are examples of a "wall portion" and an "opening", respectively. Top cover 34 is an example of the "second housing body". Controller case 37 is an example of a "case".

[0100] The above embodiments are merely illustrative, and the striking tools relating to this disclosure are not limited to the illustrated hammer 1. For example, modifications as illustrated below can be made. Furthermore, at least one of these modifications may be adopted in combination with the hammer 1 of the embodiments and at least one of the features described in each claim.

[0101] The impact tool relating to this disclosure may be a hammer drill capable of not only linearly driving the tip tool along the drive axis, but also rotationally driving the tip tool around the drive axis. Depending on the type of impact tool, the configuration and arrangement of the motor and the drive mechanism of the tip tool (motion conversion mechanism, impact mechanism) may be appropriately changed to any known configuration or arrangement.

[0102] The shapes and components of the first housing 2 and the second housing 3 are not limited to the examples of the embodiment and can be modified as appropriate. For example, the number and location of openings (wiring openings) for guiding the wires 38 extending from the controller 70 and the wires 715 extending from the motor 71 to the outside of the second housing 3 can be changed according to the number and location of the wires or components connected to each other. For example, the wiring openings may be recesses (notches) formed at the lower end of the top cover 34, or through holes formed in at least one of the main cover 31 and the top cover 34. In addition, the configuration of the controller case 37 (for example, the shape, number, and location of the wire guides 372) can also be changed in response to changes in the wiring openings.

[0103] The elastic connection structure between the first housing 2 and the second housing 3 (for example, the type, number, and position of the elastic members interposed between the first housing 2 and the second housing 3) can be modified as appropriate. The same applies to the guide structure for the relative movement of the first housing 2 and the second housing 3 (for example, the configuration, number, and position of the first guide portion 114 and the second guide portion 117). It is preferable that the number of elastic members and guide portions be two or more. Furthermore, the wiring structure according to this disclosure is also applicable when the housing consists of two housing portions (two separate housings) that are connected and fixed to each other in a manner that makes relative movement substantially impossible.

[0104] The two handles 4 may be mounted across the main cover 31 and the top cover 34, or they may be mounted on the top cover 34 (the part of the second housing 3 that houses the controller 70). There may also be only one handle 4.

[0105] The number of battery mounting sections 6 (i.e., the number of batteries 59 that can be mounted on the hammer 1) may be one or three or more. The position of the battery mounting sections 6 may also be changed as appropriate. The hammer 1 may also be equipped with a power cord instead of the battery mounting sections 6, allowing connection to an external power source via the power cord.

[0106] Furthermore, in view of the spirit of the present invention and the above embodiments, the following embodiments can be constructed. Any one or more of the following embodiments may be adopted in combination with the hammer 1 of the embodiment and its modifications, or the inventions described in each claim. [Aspect 1] The housing has at least one opening for wiring, The at least one opening allows the inside and outside of the housing to communicate with each other when the first housing and the second housing are connected. [Aspect 2] The striking tool further comprises a motor housed in the first housing, The at least one opening (recess) for wiring includes a first opening corresponding to the at least one wire extending from the controller and a second opening corresponding to a wire extending from the motor. [Aspect 3] The striking tool further comprises a switch for starting the motor supported by the housing on the outside of the housing, The at least one wire includes a switch wire directly connected to the switch, The at least one handle is attached to the housing so as to cover the switch wires and the switch. [Explanation of symbols]

[0107] 1: Hammer, 11: Housing, 111: First elastic member, 112: Second elastic member, 114: First guide section, 115: Guide cylinder, 116: Guide groove, 117: Second guide section, 118: Guide projection, 119: Guide rib, 15: Tool holder, 2: First housing, 21: Upper housing section, 212: Spring receiver section, 213: Spring receiver section, 26: Lower housing section, 261: Cylinder, 3: Second housing, 30L: Opening, 30R: Opening, 301: Opening, 31: Main cover, 3 11: Side wall section, 312: Spring support section, 313: Front wall section, 315: Rear wall section, 317: Inner wall section, 318: Passageway, 34: Top cover, 341: Upper wall section, 343: Peripheral wall section, 37: Controller case, 370: Bottom wall section, 371: Recess, 372: Wire guide, 373: Passageway, 374: Spring support section, 375: Recess, 376: Recess, 379: Locking piece, 38: Wire, 38L: Wire group, 38R: Wire group, 381: Wire for terminal, 382: Wire for LED, 383: Motor 384: Wire for switch, 385: Wire for switch, 4: Handle, 4L: Left handle, 4R: Right handle, 41: Base, 42: Gripping part, 43: Trigger, 5: Battery housing, 501: Base, 502: Cover, 51: Top wall, 511: First top wall, 512: Second top wall, 513: Opening, 52: Bottom wall, 53: Rear wall, 54: Side wall, 59: Battery, 6: Battery mounting part, 61: Engaging part, 65: Terminal part, 651: Terminal, 655: Base, 70: Controller, 700: Controller assembly, 705: Heat dissipation component, 71: Motor, 711: Output shaft, 715: Wire, 716: Connector, 72: Switch, 73: Motion conversion mechanism, 731: Crankshaft, 733: Connecting rod, 735: Piston, 75: Striking mechanism, 750: Air chamber, 751: Striker, 753: Impact bolt, 77: Main power switch, 78: Wireless unit, 781: Start button, 79: LED light, A1: Drive shaft, A2: Shaft

Claims

1. An impact tool configured to drive a tool bit linearly along a drive shaft by striking the tool bit, a housing defining the drive shaft; a controller configured to control operation of the impact tool; The housing includes: A first housing; a second housing coupled to the first housing and housing at least the controller; An impact tool, characterized in that at least one electric wire extending from the controller and at least one component disposed in the first housing are connected to each other outside the housing.

2. The impact tool according to claim 1, the second housing includes a first portion that houses the controller and a second portion that is connected to the first portion, and at least one recess for wiring is formed in a connection end of the first portion to the second portion or a connection end of the second portion to the first portion, The at least one recess provides communication between the inside and the outside of the housing when the first part and the second part are coupled together.

3. The impact tool according to claim 1 or 2, at least one battery mounting portion configured to removably mount a battery; the at least one battery mounting portion is supported by the housing on an outer side of the housing and includes a terminal that is electrically connectable to a terminal of the battery in response to mounting of the battery; The at least one electric wire includes at least one terminal electric wire directly connected to the terminal.

4. An impact tool according to any one of claims 1 to 3, The motor is accommodated in the first housing. The second housing is configured to cover at least a portion of the first housing, and is connected to the first housing via at least one elastic member so as to be movable relative to the first housing in a first direction parallel to the drive shaft.

5. The impact tool according to claim 4, The second housing has an interior wall. a passageway defined within the second housing and separated from the first housing by the interior wall; the at least one electric wire includes a motor electric wire connected to the motor; An impact tool, characterized in that an electric wire extending from the motor passes through the passage, extends to the outside of the second housing, and is connected to the motor electric wire.

6. An impact tool according to any one of claims 1 to 5, at least one handle having a grip and fixedly connected to the housing on an exterior side of the housing; The at least one handle at least partially covers the at least one electrical wire disposed outside the housing.

7. The impact tool according to claim 6, the at least one handle includes two handles disposed on opposite sides of the housing in a second direction perpendicular to the drive shaft; An impact tool, characterized in that the gripping portions of the two handles each extend along an axis extending in the second direction.

8. An impact tool according to claim 3 or any one of claims 4 to 7 depending directly or indirectly from claim 3, The impact tool, wherein the at least one battery mounting portion includes two battery mounting portions arranged on either side of the housing in a second direction perpendicular to the drive shaft.

9. The impact tool according to claim 8, Each of the two battery mounting portions includes a wall portion protruding outwardly from the housing, The terminal is supported by the wall portion, an impact tool, characterized in that the at least one terminal wire includes two terminal wires connected to the terminal through openings formed in the wall portions of each of the two battery mounting portions.

10. An impact tool according to any one of claims 1 to 9, The second housing includes: A second housing body; a case that is connected and fixed to the second housing body and that houses the controller, An impact tool, characterized in that the case has a function of temporarily fastening the controller.

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