JP7659149B2 - Electrical Equipment - Google Patents

Description

The present invention relates to electrical equipment.

In the table circular saw (electrical equipment) described in Patent Document 1 below, a battery attachment section is provided on the motor housing of the housing, and a battery is attached to the battery attachment section. This causes the motor to be driven by power supplied from the battery, thereby operating the table circular saw.

International Publication No. 2020/066902

In electrical equipment, electrical equipment with different battery mounting configurations is being manufactured to meet needs such as higher output. For example, electrical equipment with batteries of different voltages and capacities, or electrical equipment with different numbers of batteries mounted, is being manufactured. As a result, the variations in electrical equipment increase to accommodate different battery mounting configurations. In this case, manufacturing parts for each variation of electrical equipment may result in an increase in the cost of the electrical equipment.

In consideration of the above, the present invention aims to provide an electrical device that can accommodate different battery installation configurations while suppressing increases in cost. The present invention also aims to provide a means for an electrical device that can accommodate different types and numbers of batteries installed while suppressing increases in cost.

One or more embodiments of the present invention are an electrical device having an output section operated by power from a battery, the electrical device comprising: a main body housing supporting the output section; and a battery holder connected to the main body housing and having a battery mounting section in which the battery is mounted, the battery mounting section having a rail section for supporting the battery, the battery holder comprising a first member having a first engagement section that can form at least a portion of the rail section , a second member having a second engagement section that can form at least a portion of the rail section , and a third engagement section that can be fixed to the first member and can form at least a portion of the rail section. and an intermediate member having a third engagement portion and a fourth engagement portion , wherein the second member can be fixed to the first member via the intermediate member, and can also be fixed to the first member without using the intermediate member, and the rail portion formed when the second member is fixed to the first member via the intermediate member is capable of supporting two of the batteries by the first, second, third and fourth engagement portions , and the rail portion formed when the second member is fixed to the first member without using the intermediate member is capable of supporting one of the batteries by the first and second engagement portions .

One or more embodiments of the present invention are an electrical device having an output section operated by power from a battery, the electrical device comprising: a main housing supporting the output section; and a battery holder connected to the main housing and having a battery mounting section in which the battery is mounted, the battery mounting section having a rail section including a first engagement section and a second engagement section for supporting the battery, the battery holder including a first member having the first engagement section and capable of forming the rail section, an intermediate member fixable to the first member, and a second member having the second engagement section and capable of forming the rail section, the second member being fixable to the first member via the intermediate member and also being fixable to the first member without the intermediate member, the rail section formed when the second member is fixed to the first member via the intermediate member is larger than the rail section formed when the second member is directly fixed to the first member, thereby allowing a larger battery to be mounted .

One or more embodiments of the present invention have a drive unit that is powered by the power of the battery, and when the second member is fixed to the first member via the intermediate member, the drive unit is an electrical device housed in the first member and the intermediate member.

In one or more embodiments of the present invention, the intermediate member is provided with a support member that supports the drive unit, and the second member is formed with an attachment portion to which the support member can be attached.

One or more embodiments of the present invention are an electrical device having a drive unit driven by power from the battery , the battery mounting portion being provided with a connection terminal unit for supplying power from the battery to the drive unit, the battery mounting portion formed when the second member is fixed to the first member via the intermediate member having two of the connection terminal units thereby enabling power to be supplied to the drive unit, and the battery mounting portion formed when the second member is fixed to the first member without the intermediate member having one connection terminal unit thereby enabling power to be supplied to the drive unit .

In one or more embodiments of the present invention, when the second member is fixed to the first member via the intermediate member , the intermediate member is an electrical device that has a function similar to that of the second member when the second member is directly fixed to the first member .

In one or more embodiments of the present invention, the function is an electrical device that includes at least one of the following functions: a function of supporting a configuration housed in the main body housing or the battery holder, a function of supporting the battery via an elastic body, or a function of supporting a connection terminal that is supported by the battery holder and electrically connected to the battery.

One or more embodiments of the present invention are an electrical device in which the second member is fixed to the first member via the intermediate member, and when the battery holder holds two batteries, one of the batteries and the other of the batteries are arranged adjacent to each other and are arranged so that they do not overlap with each other when viewed in the adjacent direction.

In one or more embodiments of the present invention, the second member is configured to be fixable to the main body housing via the intermediate member that is attached to the first member by a fastener .

According to one or more embodiments of the present invention, it is possible to accommodate different battery mounting configurations while suppressing increases in costs.

FIG. 2 is a side view showing the bench circular saw according to the first embodiment, as viewed from the left side. 2 is a cross-sectional view (cross-sectional view taken along line 2-2 in FIG. 1) showing the inside of the battery holder shown in FIG. 1 as seen from above. 3 is a cross-sectional view (cross-sectional view taken along line 3-3 in FIG. 1) showing the inside of the battery holder shown in FIG. 1 as seen from one side in a first direction. 2 is a view of the battery holder shown in FIG. 1 as seen from one side in a first direction. 2 is a view of the battery holder shown in FIG. 1 as seen from one side in the second direction. FIG. 2 is an exploded perspective view of the battery holder shown in FIG. 1 . 2A is a view of the battery shown in FIG. 1 as seen from the other side in the first direction, and FIG. 2B is a side view of the battery shown in FIG. 2A as seen from the left side. 5 is a view showing an example in which the cover member shown in FIG. 4 is directly attached to a base member, as viewed from one side in a first direction. 6 is a view showing an example in which the adapter member shown in FIG. 5 is modified, as viewed from one side in the second direction. FIG. 10 is a view of the example shown in FIG. 9 as viewed from a first direction. 1. FIG. 4 is a side view showing a modification of the battery holder shown in FIG. 1 as viewed from the left side. FIG. 11 is a side view showing the impact wrench according to the second embodiment, as viewed from the right side. 13 is an enlarged front view of the battery holder shown in FIG. 12 . FIG. 14 is a cross-sectional view (cross-sectional view taken along line 14-14 in FIG. 12) showing the inside of the battery holder shown in FIG. 12 as seen from the front side. 14 is an exploded front view of the battery holder shown in FIG. 13. FIG. 13 is an exploded perspective view showing a state in which the right holder member and the right adapter member shown in FIG. 12 are disassembled from the main body housing. FIG. 14 is a front view showing an example in which the right holder member and the left holder member shown in FIG. 13 are directly attached to a main body housing; FIG.

First Embodiment
Hereinafter, a description will be given of a bench circular saw 10 as an electric device according to the first embodiment, with reference to Figs. 1 to 11. Note that the arrows UP, FR, and RH shown as appropriate in Figs. 1 to 11 indicate the upper side, the front side, and the right side of the bench circular saw 10, respectively. In the following description, when the up-down, front-rear, and left-right directions are used, they indicate the up-down, front-rear, and left-right directions of the bench circular saw 10, unless otherwise specified. In addition, in the following description, the direction extending diagonally upward and rearward when viewed from the left-right direction is the first direction (the direction of the arrows A1 and A2 in Fig. 1), and the direction perpendicular to the left-right direction and the first direction is the second direction (the direction of the arrows B1 and B2 in Fig. 1). Furthermore, the direction of the arrow A1 in Fig. 1 is one side of the first direction, and the direction of the arrow B1 in Fig. 1 is one side of the second direction.

As shown in FIG. 1, the bench circular saw 10 is configured to be able to mount a pair of batteries 60, and is configured as a tool that operates with power from the mounted batteries 60. The bench circular saw 10 includes a base 12 that forms the lower end of the bench circular saw 10, and a circular saw body 18 that is disposed above the base 12.

The base 12 is configured as a mounting base for the bench circular saw 10. A turntable 13 is provided on the base 12 so as to be rotatable with the vertical direction as its axial direction. A hinge 14 for connecting the circular saw body 18 is provided on the front end of the turntable 13, and the hinge 14 is connected to the turntable 13 so as to be tiltable left and right with the front-rear direction as its axial direction. The hinge 14 is provided with a support shaft 15 with the horizontal direction as its axial direction, and the circular saw body 18 (cutting section) is rotatably connected to the support shaft 15.

As shown in Figures 1 to 5, the circular saw body 18 is configured to include a housing 20 that forms the outer shell of the circular saw body 18, a motor 50 as a drive unit housed within the housing 20, and a circular saw blade 40 that is operated by the drive of the motor 50. The bench circular saw 10 also includes a pair of batteries 60 for supplying power to the motor 50, and the circular saw body 18 is formed with a pair of battery mounting sections 70L, 70R into which the batteries 60 are attached. Each component of the circular saw body 18 will be described below.

(Regarding the housing 20)
The housing 20 includes a main housing 22 for supporting a spindle 43 on which the circular saw blade 40 is attached, and a battery holder 30 (motor housing) that houses the motor 50 and has battery attachment sections 70L, 70R. The main housing 22 is made up of a plurality of housing members and is formed in a generally hollow, flat shape with a thickness direction extending in the left-right direction. A transmission mechanism 42 is housed inside the main housing 22 for transmitting the driving force of the motor 50, which will be described later, to the circular saw blade 40. The spindle 43 corresponds to the output section in the present invention.

The circular saw blade 40 is formed in a generally circular plate shape with the thickness direction being in the left-right direction, and the center of the circular saw blade 40 is fixed to the spindle 43, which serves as an output part constituting the transmission mechanism 42, so as to be able to rotate together with it. The spindle 43 is formed in a generally cylindrical shape with the axial direction being in the left-right direction, and is rotatably supported by the main body housing 22.

The main housing 22 is provided with a transmission mechanism accommodating section 23 (see Figures 2 and 3) for accommodating at least a part of the transmission mechanism 42, and the transmission mechanism accommodating section 23 is made of metal. A bearing support section 23A (see Figures 2 and 3) is provided within the transmission mechanism accommodating section 23, and the bearing support section 23A is formed in a substantially cylindrical shape with its axial direction extending in the left-right direction. A first bearing 55 is fitted into the bearing support section 23A.

The battery holder 30 is provided on the left side of the transmission mechanism housing 23. The battery holder 30 is generally formed in a generally bottomed cylindrical shape that is open to the right. As also shown in FIG. 6, the battery holder 30 includes a base member 32 as a first member that constitutes the right end of the battery holder 30, an adapter member 34 as an intermediate member that constitutes the left-right middle portion of the battery holder 30, and a cover member 36 as a second member that constitutes the left end of the battery holder 30. In other words, the battery holder 30 is composed of three members, and the battery holder 30 is formed by combining these three members.

(Regarding the base member 32)
The base member 32 is formed in a generally cylindrical shape with its axial direction extending in the left-right direction. The base member 32 is disposed adjacent to the left side of the transmission mechanism accommodating portion 23 of the main body housing 22, and is fixed to the main body housing 22 at a position not shown. The outer periphery of the left part of the base member 32 is configured as a base outer cylinder portion 32A (in a broad sense, an element that can be understood as an assembly receiving portion), and the base outer cylinder portion 32A is formed in a cylindrical shape that is open to the left side.

Inside the base member 32, a base inner cylinder portion 32B is formed to support a stator 53 of the motor 50 described later, and the base inner cylinder portion 32B is formed in a substantially cylindrical shape with the axial direction being the left-right direction. In addition, the base member 32 is provided with a plurality of (three in this embodiment) fixing bosses 32C (FIGS. 2 and 6) for fixing the adapter member 34 described later on the radial outside of the base inner cylinder portion 32B (FIGS. 2 and 6 show only one fixing boss 32C). The fixing bosses 32C are formed in a substantially bottomed cylindrical shape that is open to the right side, and are arranged at a predetermined interval in the circumferential direction of the base inner cylinder portion 32B. Fixing holes 32D are formed through the bottom wall of the fixing bosses 32C.

(Regarding the adapter member 34)
The adapter member 34 includes a right adapter portion 34R constituting the right portion of the adapter member 34, and a left adapter portion 34L constituting the left portion of the adapter member 34. The right adapter portion 34R is formed in a generally bottomed tubular shape that is open to the right side, and the outer peripheral wall of the right adapter portion 34R is formed in the same shape as the base outer tube portion 32A of the base member 32 when viewed in the left-right direction. The adapter member 34 is assembled to the base outer tube portion 32A from the left side, and the outer peripheral wall of the right adapter portion 34R closes the opening of the base outer tube portion 32A. The adapter member 34 corresponds to the intermediate member in the present invention.

Inside the right adapter part 34R, an adapter inner cylinder part 34A (see Figures 2 and 3) that supports the stator 53 of the motor 50 described later is formed, and the adapter inner cylinder part 34A is formed in an approximately cylindrical shape with the axial direction being the left-right direction and extends to the right from the bottom wall of the right adapter part 34R. The right adapter part 34R has three fixed bosses 34B (see Figures 2 and 6) formed at positions corresponding to the fixed bosses 32C of the base member 32. The fixed bosses 34B are formed in an approximately cylindrical shape with the axial direction being the left-right direction, protrude to the right and left from the bottom wall of the right adapter part 34R, and are adjacent to the left side of the fixed boss 32C. The fixing screw S1 is inserted from the right side into the fixing hole 32D of the fixed boss 32C and screwed into the fixed boss 34B, thereby fixing the adapter member 34 to the base member 32. In addition, the amount by which the fixed boss 34B protrudes from the bottom wall of the right adapter part 34R to the left is set to be significantly smaller than the amount by which it protrudes to the right.

A bearing support portion 34C (see Figures 2 and 3) is formed on the bottom wall of the right adapter portion 34R. The bearing support portion 34C is formed in a generally bottomed cylindrical shape that is open to the right, and is arranged coaxially with the first bearing 55. A second bearing 56 serving as a support member is fitted into the bearing support portion 34C, and the second bearing 56 is supported by the bearing support portion 34C.

A number of air intake holes 34D are formed through the bottom wall of the right adapter portion 34R on one side in the first direction (the side in the direction of arrow A1 in FIG. 6) and the other side (the side in the direction of arrow A2 in FIG. 6) of the bearing support portion 34C. The air intake holes 34D are formed as elongated holes with the first direction as the longitudinal direction, and the multiple air intake holes 34D are lined up at predetermined intervals in the second direction.

The left adapter part 34L is formed in a cylindrical shape with the axial direction being the left-right direction, and protrudes to the left from the outer periphery of the bottom wall of the right adapter part 34R. The left adapter part 34L is also formed in a cylindrical shape that has the same shape as the base outer cylinder part 32A.

(Regarding the cover member 36)
The cover member 36 has the same structure as the right adaptor portion 34R of the adaptor member 34. That is, the cover member 36 is formed in a generally bottomed tubular shape that is open to the right side. Also, the outer peripheral wall of the cover member 36 is formed in the same shape as the base outer tube portion 32A of the base member 32 and the left adaptor portion 34L of the adaptor member 34 when viewed from the left-right direction. Then, the cover member 36 is assembled to the left adaptor portion 34L of the adaptor member 34 from the left side, and the outer peripheral wall of the cover member 36 closes the opening of the left adaptor portion 34L.

The cover member 36 has an inner cylinder 36A formed therein, which is formed in a generally cylindrical shape with the left-right direction as its axial direction and extends to the right from the bottom wall of the cover member 36. The cover member 36 has three fixed bosses 36B (see Figs. 2 and 6) formed at positions corresponding to the fixed bosses 34B of the adapter member 34. The fixed bosses 36B are formed in a generally cylindrical shape with the left-right direction as its axial direction, protrude to the right and left from the bottom wall of the cover member 36, and are adjacent to the left side of the fixed boss 34B of the adapter member 34. The fixing screw S2 is inserted into the fixed boss 36B from the left side and screwed into the fixed boss 34B, fixing the cover member 36 to the adapter member 34. The amount of protrusion of the fixed bosses 36B from the bottom wall of the cover member 36 to the left is set to be significantly smaller than the amount of protrusion to the right.

Furthermore, a bearing support 36C is formed as an attachment part on the bottom wall of the cover member 36, and the bearing support 36C is configured similarly to the bearing support 34C of the adapter member 34. That is, the bearing support 36C is formed in a generally bottomed cylindrical shape that is open to the right side, and is configured to be able to support the second bearing 56. In addition, a plurality of elongated intake holes 36D with the first direction as the longitudinal direction are formed through the bottom wall of the cover member 36 on one side and the other side of the bearing support 36C in the first direction, and the plurality of intake holes 36D are arranged at predetermined intervals in the second direction.

As described above, the cover member 36 has the same structure as the right adapter portion 34R of the adapter member 34. Therefore, the cover member 36 is configured to be assembled to the base outer cylinder portion 32A of the base member 32 from the left side. In other words, as will be described in detail later, it is possible to manufacture a bench circular saw in which the cover member 36 is directly assembled to the base member 32 without using the adapter member 34. When the cover member 36 is directly assembled to the base member 32, the fixed boss 36B of the cover member 36 is disposed adjacent to the left side of the fixed boss 32C of the base member 32. Then, the fixing screw S1 is inserted into the fixing hole 32D of the fixed boss 32C from the right side and screwed into the fixed boss 36B, thereby fixing the cover member 36 to the base member 32.

(Regarding the motor 50)
As shown in Fig. 2 and Fig. 3, the motor 50 is accommodated inside the battery holder 30 and the transmission mechanism accommodating section 23 of the main housing 22. Specifically, the motor 50 is accommodated inside the base member 32 and the adapter member 34 of the battery holder 30. That is, the battery holder 30 also functions as a housing section (motor housing) that accommodates the motor 50. In other words, the motor housing has the function of holding the battery 60. The motor 50 has a drive shaft 51, which is formed in a cylindrical shape with the axial direction being the left-right direction. The left end of the drive shaft 51 is rotatably supported by the second bearing 56, and the right part of the drive shaft 51 is rotatably supported by the first bearing 55. The transmission mechanism 42 (belt) is connected to the right end of the drive shaft 51.

The motor 50 also has a rotor 52, which is provided at the axial middle of the drive shaft 51 so as to be able to rotate together with the drive shaft 51. The motor 50 also has a stator 53, which is provided radially outside the rotor 52 and is supported by the base inner cylinder 32B of the base member 32 and the adapter inner cylinder 34A of the adapter member 34. The motor 50 is electrically connected to a control unit (not shown), which drives the motor 50. A fan 58 is provided at the right side of the drive shaft 51 so as to be able to rotate together with the drive shaft 51. When the fan 58 rotates together with the drive shaft 51, cooling air flows into the battery holder 30 from the intake hole 36D of the cover member 36 and the intake hole 34D of the adapter member 34.

(Regarding battery 60)
1, 3, and 7, the battery 60 is formed in a generally rectangular parallelepiped block shape with the left-right direction as the width direction, the first direction as the depth direction, and the second direction as the height direction. One side in the depth direction (the side in the direction of the arrow A2 in FIG. 7) is the front side of the battery 60, and the other side in the depth direction (the side in the direction of the arrow A1 in FIG. 7) is the rear side of the battery 60. A protrusion 61 is formed at the end on the rear side of the battery 60, protruding toward one side in the height direction (the side in the direction of the arrow B2 in FIG. 7), and the rear surface of the protrusion 61 is inclined toward the front side as it approaches one side in the height direction.

The battery 60 is formed with an attachment portion 62 on the front side of the protrusion 61, which is configured to be attached to the battery attachment portions 70L and 70R described below, and the attachment portion 62 is formed in a substantially rectangular plate shape with its thickness direction being the height direction (second direction) of the battery 60. This attachment portion 62 is provided with a terminal (connection terminal) not shown. Rail grooves 62A are formed on the left and right side surfaces of the attachment portion 62 as engagement portions, and the rail grooves 62A extend in the depth direction of the battery 60 and are open to the outside in the width direction and to the front side. The rail grooves 62A on the left and right are shaped symmetrically.

A pair of latches 63 are provided on both widthwise sides of the protruding portion 61 of the battery 60. The latches 63 are configured to be capable of being pressed inward in the widthwise direction of the battery 60. When the battery 60 is attached to the battery attachment parts 70L, 70R described below, the latches 63 engage with the battery attachment parts 70L, 70R to maintain the battery 60 attached to the battery attachment parts 70L, 70R. On the other hand, the battery 60 can be removed from the battery attachment parts 70L, 70R by pressing the latches 63 to release the engagement between the latches 63 and the battery attachment parts 70L, 70R.

(Regarding battery mounting sections 70L and 70R)
As shown in Fig. 3 to Fig. 6, the pair of battery mounting parts 70L, 70R are formed on the outer periphery of the battery holder 30 on one side in the second direction. Specifically, the battery mounting part 70R is formed straddling the base member 32 and the adapter member 34 in the left-right direction, and the battery mounting part 70L is formed straddling the adapter member 34 and the cover member 36 in the left-right direction, and the battery mounting parts 70L, 70R are arranged side by side in the left-right direction. The mounting part 62 of one battery 60 is mounted on the battery mounting part 70R, and the mounting part 62 of the other battery 60 is mounted on the battery mounting part 70L. That is, the bench circular saw 10 is configured so that two batteries 60 can be mounted, and the mounted batteries 60 are held by the battery holder 30.

The battery mounting section 70R is formed in a concave shape that is open to one side in the first direction and one side in the second direction, and the mounting portion 62 of the battery 60 is mounted to the battery mounting section 70R from one side in the first direction. The right part of the battery mounting section 70R is configured as a first one-side mounting section 71, which is formed on the base member 32. On the other hand, the left part of the battery mounting section 70R is configured as a second one-side mounting section 72, which is formed on the right adapter section 34R of the adapter member 34. The first one-side mounting section 71 and the second one-side mounting section 72 are configured symmetrically. In order to engage with the rail groove 62A, which has a symmetrical structure in the battery 60, the first one-side mounting section 71 and the second one-side mounting section 72 also have a symmetrical structure.

The first half-mounting section 71 has a first rail 71A as a first engagement section, and the first rail 71A is formed in a rail shape extending in the first direction on the right side of the first half-mounting section 71. The second half-mounting section 72 has a second rail 72A as a second engagement section, and the second rail 72A is formed in a rail shape extending in the first direction on the left side of the second half-mounting section 72. When the battery 60 is attached to the battery attachment section 70R, the first rail 71A and the second rail 72A are inserted into the left and right rail grooves 62A of the battery 60, and the first rail 71A and the second rail 72A engage with the rail grooves 62A in the second direction (see FIG. 3).

The battery mounting section 70R is provided with a connection terminal unit 73 to which the terminals of the battery 60 are connected, and the connection terminal unit 73 is sandwiched from the outside in the left-right direction by the base member 32 and the adapter member 34 and exposed to the upper side. That is, the first half-mounting section 71 is formed with a recess 71B that opens to the left side for arranging the connection terminal unit 73, and the second half-mounting section 72 is formed with a recess 72B that opens to the right side for arranging the connection terminal unit 73. The connection terminal unit 73 is electrically connected to the control section, and power from the battery 60 is supplied to the motor 50 via the control section.

The battery mounting section 70L has the same structure as the battery mounting section 70R. That is, the battery mounting section 70L is formed in a concave shape that is open to one side in the first direction and one side in the second direction. The first half-side mounting section 71 of the battery mounting section 70L is formed in the left adapter section 34L of the adapter member 34, and the second half-side mounting section 72 of the battery mounting section 70L is formed in the cover member 36. The battery mounting section 70L is provided with a connection terminal unit 73, which is sandwiched from the outside in the left-right direction by the adapter member 34 and the cover member 36 and exposed to the upper side. Furthermore, a first rail 71A is formed on the right side of the first half-side mounting section 71, and a second rail 72A is formed on the left side of the second half-side mounting section 72.

As described above, the cover member 36 has the same structure as the right adapter portion 34R of the adapter member 34. Therefore, when the cover member 36 is directly attached to the base member 32 without using the adapter member 34, the battery mounting portion 70R is formed by the base member 32 and the cover member 36, and the second one-side mounting portion 72 of the cover member 36 forms the left portion of the battery mounting portion 70R. In other words, in this case, it is possible to manufacture a bench circular saw having one battery mounting portion 70R formed by the base member 32 and the cover member 36. In addition, in this case, the left end of the drive shaft 51 of the motor 50 is supported by the second bearing 56 fitted into the bearing support portion 36C of the cover member 36.

(Action and Effect)
Next, the operation and effects of this embodiment will be described.

The bench circular saw 10 configured as described above has a main housing 22 that supports the spindle 43 and the circular saw blade 40, and a battery holder 30, and a pair of battery attachment sections 70L, 70R are formed in the battery holder 30. The bench circular saw 10 operates when power is supplied to the motor 50 from the batteries 60 attached to the battery attachment sections 70L, 70R. The battery holder 30 also includes a base member 32 assembled to the main housing 22, an adapter member 34 assembled to the base outer cylinder section 32A of the base member 32, and a cover member 36 assembled to the left adapter section 34L of the adapter member 34.

Here, the base member 32 is formed with a first one-side mounting portion 71 constituting the right part of the battery mounting portion 70R, and the first one-side mounting portion 71 has a first rail 71A configured to be inserted into the rail groove 62A on the right side of the battery 60. Also, the cover member 36 is formed with a second one-side mounting portion 72 constituting the left part of the battery mounting portion 70L, and the second one-side mounting portion 72 has a second rail 72A configured to be inserted into the rail groove 62A on the left side of the battery 60. Furthermore, the cover member 36 is configured to have the same structure as the right adapter portion 34R of the adapter member 34, and is configured to be assembled to the base outer tube portion 32A of the base member 32. That is, the cover member 36 is configured to be assembled to the base member 32 and the adapter member 34. And when the cover member 36 is assembled to the base member 32, the second one-side mounting portion 72 of the cover member 36 constitutes the left part of the battery mounting portion 70R. This makes it possible to accommodate different battery installation configurations while keeping costs down.

That is, for example, as shown in FIG. 8, by omitting the adapter member 34 and directly assembling the cover member 36 to the base member 32, one battery mounting portion 70R can be formed by the first one-side mounting portion 71 of the base member 32 and the second one-side mounting portion 72 of the cover member 36. In other words, by omitting the adapter member 34, a bench circular saw with one battery 60 mounting portion can be manufactured. In addition, when manufacturing a product with two battery mounting portions, such as the bench circular saw 10 of this embodiment, the adapter member 34 can be provided between the cover member 36 and the base member 32, and the first one-side mounting portion 71 and the second one-side mounting portion 72 can be formed on the adapter member 34, so that two battery mounting portions can be set in the bench circular saw 10. Therefore, bench circular saws with different numbers of batteries can be manufactured while configuring the parts other than the adapter member 34 as common parts. In other words, by adding the adapter member 34 to a bench circular saw that has one battery attachment location, a bench circular saw with multiple battery attachment locations can be manufactured. In this way, when the state in which the battery holder 30 is formed without using the adapter member (intermediate member) 34 is defined as a first state, and the state in which the battery holder 30 is formed using the adapter member (intermediate member) 34 is defined as a second state, the present invention is characterized in that the state of the battery attachment section can be changed between the first state and the second state. In this embodiment, the state of the battery attachment section can be changed to change the number of batteries that can be attached.

9 and 10, for example, by appropriately changing the shape of the adapter member 34, a battery 80 larger in size in the width direction (left-right direction) can be mounted compared to the battery 60 of this embodiment. In this case, the first rail 71A and the second rail 72A are omitted in the adapter member 34, and a communication portion 34E that communicates the first one-side mounting portion 71 and the second one-side mounting portion 72 is formed. Also, the connection terminal unit 73 is made longer in the left-right direction compared to this embodiment, and a hole portion 34F in which the connection terminal unit 73 is disposed is formed in the adapter member 34. Furthermore, the mounting portion 62 of the battery 80 is made longer in the left-right direction than the battery 60 of this embodiment, so that the first rail 71A of the base member 32 and the second rail 72A of the cover member 36 can be inserted into the rail groove 62A of the battery 80. This allows a battery 80 larger in size in the width direction to be mounted. In other words, for example, batteries with different voltages and capacities can be mounted. Therefore, it is possible to manufacture a bench circular saw that can accommodate large batteries with different capacities and outputs while configuring the components other than the adapter member 34 as common components. As described above, the bench circular saw 10 of this embodiment can accommodate different battery installation configurations while suppressing increases in cost. That is, in the example shown in Figures 9 and 10, the type of battery that can be installed changes between the first state and the second state described above. Note that in the example shown in Figures 9 and 10, the length of the adapter member 34 in the left-right direction is set to be shorter than in this embodiment.

In addition, in the bench circular saw 10, the motor 50 is housed in the base member 32 and adapter member 34 of the battery holder 30. This allows the motor 50 to be housed by utilizing the battery holder 30, which holds the attached battery 60. Furthermore, by housing the motor 50 within the battery holder 30, the battery 60 and the motor 50 can be positioned in close proximity to each other. This allows the bench circular saw 10 to be made more compact.

In addition, a bearing support portion 36C similar to the bearing support portion 34C of the adapter member 34 is formed on the bottom wall of the cover member 36, and the bearing support portion 36C is configured to be able to support the second bearing 56. Therefore, even in a bench circular saw in which the cover member 36 is directly attached to the base member 32, the motor 50 can be housed in the cover member 36 and supported by the second bearing 56. As such, what is important in this invention is that the adapter member 34 and the cover member 36 (the intermediate member and the second member in this invention) have the same function. In the case of the bench circular saw 10, by forming the bearing support portion 36C similar to the bearing support portion 34C of the adapter member 34 on the cover member 36, it is not necessary to change the support position of the second bearing 56 between the first state and the second state described above. This makes it possible to change the battery mounting mode without changing the internal configuration of the drive shaft 51 as much as possible. Therefore, it is possible to reduce costs by using common parts.

In the present embodiment of the bench circular saw 10, the battery mounting parts 70L, 70R are arranged side by side in the left-right direction and are arranged in the same position when viewed from the left-right direction. Alternatively, the positions of the battery mounting parts 70L, 70R may be shifted. For example, as shown in FIG. 11, when viewed from the left side, the battery mounting part 70L may be set to a position rotated clockwise around the drive shaft 51 of the motor 50 relative to the battery mounting part 70R.

In this case, although not shown, the left adapter part 34L of the adapter member 34 is formed in a position rotated clockwise around the drive shaft 51 of the motor 50 when viewed from the left side. As a result, the first one-side mounting part 71 formed in the left adapter part 34L is also arranged in a position rotated clockwise around the drive shaft 51 of the motor 50. Furthermore, the cover member 36 is arranged in a position rotated clockwise around the drive shaft 51, and a fixing boss corresponding to the fixed boss 36B of the cover member 36 is formed in the adapter member 34. As a result, the cover member 36 can be fixed to the adapter member 34, and the battery mounting part 70L can be set to a position rotated clockwise around the drive shaft 51 of the motor 50 relative to the battery mounting part 70R.

In the embodiment shown in FIG. 11, the battery mounting section 70L is disposed at a position rotated around the drive shaft 51 relative to the battery mounting section 70R, so that the battery 60 mounted on the battery mounting section 70L and the battery 60 mounted on the battery mounting section 70R are disposed at positions offset from each other in the rotation direction around the drive shaft 51. As a result, when viewed from the left-right direction (the direction in which the batteries 60 are adjacent to each other), the latch 63 of one battery 60 can be disposed at a position that does not overlap with the other battery 60. In the example shown in FIG. 11, when viewed from the left side, the latch 63 of the battery 60 mounted on the battery mounting section 70L is disposed at a position that does not overlap with the battery 60 mounted on the battery mounting section 70R. Therefore, when removing the left battery 60, the operator's hand can be prevented from interfering with the right battery 60. In addition, after removing the left battery 60, the right battery 60 can be easily removed. Therefore, in the embodiment shown in FIG. 11, even if the batteries 60 are arranged in the left-right direction, the attachment and detachment performance of the batteries 60 can be improved. In the embodiment shown in FIG. 11, the latches 63 arranged on the left and right sides of one battery 60 do not overlap with the other battery 60 when viewed in the left-right direction, improving the operability of the removal operation, but parts other than the latches 63 may not overlap, and even in this case, it is easier to position the operator's fingers when removing, making the removal easier. That is, as in the embodiment shown in FIG. 11, by devising the shape of the adapter member 34 and shifting the relative positions of the battery mounting part 70L and the battery mounting part 70R when viewed in the left-right direction (so that they do not overlap), the removal operation can be made easier regardless of the position of the latches 63.

Second Embodiment
An impact wrench 100 as an electric device according to the second embodiment will be described below with reference to Figures 12 to 17. Note that the arrows UP, FR, and RH shown as appropriate in Figures 12 to 17 indicate the upper side, front side, and right side of the impact wrench 100, respectively. In the following description, when the up-down, front-back, and left-right directions are used, they refer to the up-down, front-back, and left-right directions of the impact wrench 100 unless otherwise specified.

As shown in Figures 12 to 14, the impact wrench 100, like the first embodiment, is configured to be able to mount a pair of batteries 60, and is configured as a tool that operates with power supplied from the batteries 60. Note that in the impact wrench 100, the batteries 60 are mounted so that the up-down direction corresponds to the height direction of the battery 60, and the front-rear direction corresponds to the depth direction of the battery 60. The impact wrench 100 is configured to include a housing 102 that forms the outer shell of the impact wrench 100, and a motor 130 that serves as a drive unit housed within the housing 102.

(Regarding the housing 102)
The housing 102 includes a main housing 104 that supports an anvil 124 serving as an output unit while accommodating a motor 130 (to be described later) and a battery holder 110 that constitutes the lower end of the housing 102. The main housing 104 is formed in a hollow, generally I-shape when viewed from the right side, and a part of the outer periphery of the main housing 104 is covered by a housing cover 108. Specifically, the main housing 104 includes an upper housing portion 104A extending in the front-rear direction, a handle portion 104B extending downward from a longitudinal middle portion of the upper housing portion 104A, and a lower housing portion 104C that constitutes the lower end of the main housing 104. A trigger 120 is provided at the front end of the upper end of the handle portion 104B so as to be operable when pulled, and a control portion 122 is accommodated in the lower housing portion 104C. An anvil 124 serving as an output part for attaching a tool tip (not shown) is provided at the front end of the upper housing part 104A, and the anvil 124 is supported by the upper housing part 104A so as to be movable relatively in the front-rear direction.

The lower housing portion 104C is formed in a generally rectangular flat shape with its thickness extending in the vertical direction, and is connected to the lower end of the handle portion 104B. The lower housing portion 104C is also configured as a receiving portion to which a battery holder 110, which will be described later, is attached. A groove portion 104D (see FIG. 14) is formed on the outer periphery of the lower housing portion 104C, and the groove portion 104D is formed around the entire circumferential direction of the lower housing portion 104C. An annular vibration-proof member 106 is fitted into the groove portion 104D. The battery holder 110 will be described later.

(Regarding the motor 130)
As shown in Fig. 12, the motor 130 is housed in the rear end of the upper housing part 104A with the left-right direction as the axial direction. The motor 130 is electrically connected to the control part 122, and is configured to receive power from a battery 60 mounted in the battery mounting parts 140L, 140R described later. A spindle 132 is rotatably provided on the front side of the motor 130 with the axial direction being the front-rear direction, and the spindle 132 is connected to the motor 130. A hammer 134 is connected to the spindle 132 via a cam mechanism. When the motor 130 is driven, a striking force is applied from the hammer 134 to the anvil 124.

(Regarding the battery holder 110)
12 to 16, the battery holder 110 is generally formed in a generally inverted T-shaped block shape when viewed from the front side, and is attached to the lower housing portion 104C of the main housing 104. The battery holder 110 is composed of a right side holder member 112 as a first member that constitutes the right end portion of the battery holder 110, a right side adapter member 114 and a left side adapter member 116 that constitute a pair of left and right intermediate members that constitute the left and right intermediate portion of the battery holder 110, and a left side holder member 118 as a second member that constitutes the left end portion of the battery holder 110.

In the battery holder 110, the right adapter member 114 is assembled to the lower housing part 104C from the right side, and the left adapter member 116 is assembled to the lower housing part 104C from the left side. In addition, the right holder member 112 is assembled to the right adapter member 114 from the right side, and the left holder member 118 is assembled to the left adapter member 116 from the left side.

The right part of the battery holder 110 is the right side battery holder 110R serving as the first battery holder, which is composed of a right side holder member 112 and a right side adapter member 114. The left part of the battery holder 110 is the left side battery holder 110L serving as the second battery holder, which is composed of a left side adapter member 116 and a left side holder member 118. This allows the right side battery holder 110R and the left side battery holder 110L to be detachable from the lower housing portion 104C. Each component of the battery holder 110 will be described below.

(Regarding the right adapter member 114)
The left part of the right adapter member 114 is configured as a base part 114A for assembling the right adapter member 114 to the lower housing part 104C, and the base part 114A is formed in a block shape with the longitudinal direction being the front-rear direction. An adapter fitting recess 114B (which is an element that can be broadly understood as an intermediate assembly part) is formed in the upper part of the base part 114A, and the adapter fitting recess 114B is formed in a recessed shape that is open to the upper side and the left side (see FIG. 16). The shape of the adapter fitting recess 114B is set so that the right part of the lower housing part 104C is fitted into the adapter fitting recess 114B when the right adapter member 114 is assembled to the lower housing part 104C. A groove part 114C is formed on the inner peripheral surface of the adapter fitting recess 114B, and the vibration-proof member 106 is placed in the groove part 114C when the right adapter member 114 is assembled to the lower housing part 104C.
It has become.

A fixing boss 114D is formed at the front and rear ends of the upper part of the base 114A, and the fixing boss 114D is formed in a generally cylindrical shape with the axial direction being the left-right direction. A fixed boss 114E is formed at the front and rear ends of the lower part of the base 114A, and the fixed boss 114E is formed in a generally cylindrical shape with a bottom that is open to the right.

The right part of the right adapter member 114 is configured as an adapter-side mounting part 114F (broadly speaking, an element that can be understood as an intermediate mounting part) for mounting the right holder member 112. The adapter-side mounting part 114F is configured to have the same structure as the right part of the lower housing part 104C. That is, the adapter-side mounting part 114F is formed in a substantially rectangular flat shape with the thickness direction being the vertical direction, and extends to the right from the vertical middle part of the base part 114A. In addition, a groove part 114G is formed on the outer periphery of the adapter-side mounting part 114F, and the groove part 114G is formed along the circumferential direction of the adapter-side mounting part 114F.

(Regarding the left adapter member 116)
The left adapter member 116 is configured symmetrically with the right adapter member 114 except for the fixed boss 114D of the right adapter member 114. That is, the right part of the left adapter member 116 is configured as a block-shaped base 116A whose longitudinal direction is the front-rear direction, and a concave adapter fitting recess 116B that is open to the upper side and the right side is formed on the upper part of the base 114A. Also, a groove 116C is formed on the inner peripheral surface of the adapter fitting recess 116B. Then, when the left adapter member 116 is assembled to the lower housing part 104C, the left part of the lower housing part 104C is fitted into the adapter fitting recess 116B, and the lower housing part 104C is sandwiched between the right adapter member 114 and the left adapter member 116 from the left-right direction. Also, when the left adapter member 116 is assembled to the lower housing part 104C, the vibration-proof member 106 is placed in the groove 116C.

At the front and rear ends of the upper part of the base 116A, a fixed boss 116D corresponding to the fixed boss 114D of the right adapter member 114 is formed, and the fixed boss 116D is formed in a substantially cylindrical shape with a bottom that is open to the right. Then, a fixing screw S3 is inserted into the fixed boss 114D of the right adapter member 114 from the left side and screwed into the fixed boss 116D, fixing the right adapter member 114 and the left adapter member 116 to the lower housing part 104C. In addition, a fixed boss 116E is formed at the front and rear ends of the lower part of the base 116A, and the fixed boss 116E is formed in a substantially cylindrical shape with a bottom that is open to the left side.

The left adapter member 116 further has an adapter-side mounting portion 116F that extends to the left from the vertical middle of the base 116A. A groove 116C is formed on the outer periphery of the adapter-side mounting portion 116F, and the groove 116C is formed along the circumferential direction of the adapter-side mounting portion 116F.

(Regarding the right holder member 112)
The right holder member 112 is formed in a block shape extending in the front-rear direction. A holder-side fitting recess 112A is formed in the upper part of the right holder member 112 to be attached to the adapter-side mounting portion 114F of the right adapter member 114, and the holder-side fitting recess 112A has the same structure as the adapter fitting recess 114B of the right adapter member 114. That is, the holder-side fitting recess 112A is formed in a concave shape that is open to the upper side and the left side. This allows the right holder member 112 to be attached to the right adapter member 114 and the lower housing portion 104C. When the right holder member 112 is attached to the right adapter member 114, the adapter-side mounting portion 114F is fitted into the holder-side fitting recess 112A. A groove portion 112B is formed on the inner peripheral surface of the holder-side fitting recess 112A.

The right holder member 112 has a pair of holder-side fixed bosses 112C at positions corresponding to the fixed bosses 114E of the right adapter member 114, and the holder-side fixed bosses 112C are formed in a generally cylindrical shape with the axial direction being the left-right direction. A fixing screw S4 is inserted into the holder-side fixed bosses 112C from the right side and screwed into the fixed bosses 114E of the right adapter member 114, thereby fixing the right holder member 112 to the right adapter member 114.

(Regarding the left holder member 118)
The left holder member 118 is configured symmetrically with the right holder member 112. That is, the left holder member 118 has a holder-side fitting recess 118A that is open to the upper side and the right side. This allows the left holder member 118 to be assembled to the left adapter member 116 and the lower housing portion 104C. A groove 118B is formed on the inner peripheral surface of the holder-side fitting recess 118A. Furthermore, the left holder member 118 has a pair of holder-side fixing bosses 118C at the front and rear at positions corresponding to the fixing bosses 114E of the right adapter member 114. Fixing screws S4 are inserted into the holder-side fixing bosses 118C from the left side and screwed into the fixing bosses 116E of the left adapter member 116, thereby fixing the left holder member 118 to the left adapter member 116.

At the bottom end of the battery holder 110, a pair of battery mounting sections 140L and 140R are formed as left and right battery mounting sections for mounting the batteries 60. Specifically, the battery mounting section 140R is formed in the right battery holder 110R and is formed straddling the right holder member 112 and the right adapter member 114. Meanwhile, the battery mounting section 140L is formed in the left battery holder 110L and is formed straddling the left adapter member 116 and the left holder member 118. The mounting section 62 of one battery 60 is mounted in the battery mounting section 140R, and the mounting section 62 of the other battery 60 is mounted in the battery mounting section 140L.

The battery mounting section 140R is formed in a concave shape that is open to the lower side and the front side, and is configured in the same manner as the battery mounting section 70R and the battery mounting section 70L of the first embodiment. That is, the right part of the battery mounting section 140R is configured as a first one-side mounting section 141, and the first one-side mounting section 141 is formed on the right side holder member 112. The first one-side mounting section 141 has a first rail 141A as a first engagement section, and the first rail 141A is formed in a rail shape extending in the front-rear direction on the right side of the first one-side mounting section 141. On the other hand, the left part of the battery mounting section 140R is configured as a second one-side mounting section 142, and the second one-side mounting section 142 is formed on the right side adapter member 114. The second half-mounting section 142 has a second rail 142A as a second engagement section, and the second rail 142A is formed in a rail shape extending in the front-rear direction on the left side of the second half-mounting section 142. When the battery 60 is mounted on the right-side battery holder 110R, the first rail 141A and the second rail 142A of the battery mounting section 140R are inserted into the left and right rail grooves 62A of the battery 60. Furthermore, the battery mounting section 140R is provided with a connection terminal unit 143 similar to the connection terminal unit 73 of the first embodiment, and the connection terminal unit 143 is sandwiched from the outside in the left-right direction by the right holder member 112 and the right adapter member 114 and exposed to the lower side.

The battery mounting section 140L has the same structure as the battery mounting section 140R. That is, the battery mounting section 140L is formed in a concave shape that is open to the lower side and the front side. The first one-side mounting section 141 of the battery mounting section 140L is formed in the left adapter member 116, and the second one-side mounting section 142 of the battery mounting section 140L is formed in the left holder member 118. The battery mounting section 140L is also provided with a connection terminal unit 143, which is sandwiched from the outside in the left-right direction by the left adapter member 116 and the left holder member 118 and exposed to the lower side. Furthermore, a first rail 141A is formed on the right side of the battery mounting section 140L, and a second rail 142A is formed on the left side of the battery mounting section 140L. As a result, when the battery 60 is attached to the left battery holder 110L, the first rail 141A and second rail 142A of the battery attachment section 140L are inserted into the left and right rail grooves 62A of the battery 60.

Furthermore, as described above, the right holder member 112 and the left holder member 118 are configured to be able to be assembled to the lower housing portion 104C. Specifically, the right portion of the lower housing portion 104C is fitted from the left side into the holder side fitting recess 112A of the right holder member 112, and the left portion of the lower housing portion 104C is fitted from the right side into the holder side fitting recess 118A of the left holder member 118. As a result, in the second embodiment, it is possible to manufacture an impact wrench that omits the right adapter member 114 and the left adapter member 116.

As shown in FIG. 17, when the right holder member 112 and the left holder member 118 are directly assembled to the lower housing portion 104C, the first one-side mounting portion 141 of the right holder member 112 and the second one-side mounting portion 142 of the left holder member 118 are arranged adjacent to each other in the left-right direction to form one battery mounting portion. As a result, by omitting the right adapter member 114 and the left adapter member 116 from the impact wrench 100, an impact wrench with one battery mounting portion can be manufactured. Therefore, in the second embodiment, as in the first embodiment, impact wrenches with different numbers of batteries can be manufactured while configuring parts other than the right adapter member 114 and the left adapter member 116 as common parts. In other words, by adding the right adapter member 114 and the left adapter member 116 to an impact wrench with one battery mounting portion, an impact wrench with multiple battery mounting portions can be manufactured.

Although not shown, similarly to the first embodiment, by appropriately modifying the shapes of the right adapter member 114 and the left adapter member 116, it is possible to mount a battery 80 that is larger in size in the width direction (left-right direction) compared to the battery 60 of this embodiment. Therefore, it is possible to manufacture an impact wrench capable of mounting batteries of different capacities while configuring the parts other than the right adapter member 114 and the left adapter member 116 as common parts. As described above, the second embodiment also has the same effects as the first embodiment.

In the second embodiment, the right part of the battery holder 110 is configured as a right battery holder 110R, and the battery mounting part 140R in which the battery 60 is mounted is formed in the right battery holder 110R. Furthermore, the left part of the battery holder 110 is configured as a left battery holder 110L, and the battery mounting part 140L in which the battery 60 is mounted is formed in the left battery holder 110L. The right battery holder 110R and the left battery holder 110L are configured to be detachable from the lower housing part 104C. This improves maintainability, for example, when the battery holder 110 is damaged. In addition, the vibration-proof member 106 is fitted into the groove 104D, and when the left adapter member 116 is assembled to the lower housing part 104C, the vibration-proof member 106 is disposed in the groove 116C, and when the right adapter member 114 is assembled to the lower housing part 104C, the vibration-proof member 106 is disposed in the groove 114C, so that the vibration-proof member 106 is interposed between the main housing 104 and the battery mounting part (first rail 141A, second rail 142A). Therefore, it is possible to suppress the transmission of vibrations generated in the main housing 104 to the battery mounting part (first rail 141A, second rail 142A) and the battery 60. This makes it possible to suppress the deterioration of the connection relationship (degree of sliding resistance) between the battery 60 and the battery mounting part (first rail 141A, second rail 142A) and the electrical connection state between the connection terminal unit 143 and the battery 60. In the present invention, the groove 112B of the right holder member 112 and the groove 114C of the right adapter member 114 are made to have the same shape, and the groove 118B of the left holder member 118 and the groove 116C of the left adapter member 116 are made to have the same shape. This allows the same vibration-proof member 106 to be used in the first state shown in FIG. 17 and the second state shown in FIG. 14 and the like. That is, the right adapter member 114 (left adapter member 116) corresponding to the intermediate member of the present invention has the function of the right holder member 112 (left holder member 118) corresponding to the first member (second member) of the present invention, which is to suppress the transmission of vibration to the battery mounting portion and the battery 60 by disposing a part of the vibration-proof member 106 fitted into the groove 104D in the groove. In this way, in the second embodiment, the intermediate member has the same function as the second member as in the first embodiment, so that parts can be preferably shared.

In the first embodiment, the table saw 10 is configured to be able to mount two batteries 60, and in the second embodiment, the impact wrench 100 is configured to be able to mount two batteries 60. However, in the first and second embodiments, three or more batteries 60 may be mounted. That is, for example, in the first embodiment, the shape of the adapter member 34 may be appropriately changed to allow three or more batteries 60 to be mounted. In addition, in the above example, as an example of changing the mode of the battery mounting part, a configuration in which the number of rail parts supporting the battery 60 is changed to change the number of batteries that can be mounted, or the distance between the two rail parts is changed to change the type of batteries that can be mounted, has been described, but a configuration in which the length of the rail parts is changed can also be realized. That is, for example, in the second embodiment, the first rail 141A is integral with the right holder member 112 (left adapter member 116), and the second rail 142A is integral with the left holder member 118 (right adapter member 114). However, the first rail 141A and the second rail 142A may be configured so that half of the extending direction of the first rail 141A and the second rail 142A is integral with the right holder member 112 (left adapter member 116) and the other half is integral with the left holder member 118 (right adapter member 114), so that the first rail 141A and the second rail 142A are separated in the middle. In this way, it is possible to change the length of the first rail 141A and the second rail 142A by interposing an intermediate member having a portion that connects the first rail 141A and the second rail 142A. Therefore, in the present invention, it is also possible to change the length of the rail groove, and it is possible to accommodate more types of batteries. In addition, the base member 32 and the right holder member 112, which correspond to the first member of the present invention, do not necessarily need to be configured to be removable from the main body housing. The present invention is applicable as long as at least the second member is removable from the main body housing.

The present invention is also applicable to products that were on the market prior to the filing of this application. In other words, if there is already a product in which at least the second member of the first and second members that make up the battery attachment/detachment section is configured to be removable, it is possible to provide an electrical device that achieves different battery attachment modes while achieving part standardization by interposing an intermediate member between the second member and the main housing. Such means are also within the scope of the present invention.

The battery holder structure applied in the first and second embodiments may also be applied to other electrical devices that are driven by a battery. For example, the present invention can also be applied to electrical devices such as a blower that has a fan as an output unit, a light that has an illumination unit, and a radio that has a speaker.

10. Tabletop circular saw (electrical equipment)
22 Main body housing 30 Battery holder 32 Base member (first member)
34 Adapter member (intermediate member)
36 Cover member (second member)
36C Bearing support part (mounting part)
43 Spindle (output part)
50 Motor (drive unit)
56 Second bearing (support member)
60 Battery
62A Rail groove (engaged portion)
70L Battery mounting section (battery mounting section)
70R Battery mounting section (battery mounting section)
71A First rail (first engagement portion)
72A Second rail (second engagement portion)
100 Impact wrench (electrical equipment)
104 Main body housing 110 Battery holder 110R Right battery holder (first battery holder)
110L Left battery holder (second battery holder)
112 Right holder member (first member)
114 Right adapter member (intermediate member)
116 Left adapter member (intermediate member)
118 Left holder member (second member)
124 Anvil (output section)
140L Battery mounting section (battery mounting section)
140R Battery mounting section (battery mounting section)
141A First rail (first engagement portion)
142A Second rail (second engagement portion)

Claims (9)

An electrical device in which an output unit operates using power from a battery,
a main body housing supporting the output portion;
a battery holder connected to the main body housing and having a battery mounting portion in which the battery is mounted;
Equipped with
the battery mounting portion has a rail portion for supporting the battery,
The battery holder includes:
a first member having a first engagement portion that can constitute at least a portion of the rail portion ;
a second member having a second engagement portion that can constitute at least a portion of the rail portion ;
an intermediate member that can be fixed to the first member and has a third engaging portion and a fourth engaging portion that can form at least a part of the rail portion;
and
the second member is fixable to the first member via the intermediate member and is fixable to the first member without the intermediate member;
An electrical device in which the rail portion formed when the second member is fixed to the first member via the intermediate member is capable of supporting two of the batteries by the first, second, third, and fourth engagement portions, and the rail portion formed when the second member is fixed to the first member without the intermediate member is capable of supporting one of the batteries by the first and second engagement portions. An electrical device in which an output unit operates using power from a battery,
a main body housing supporting the output portion;
a battery holder connected to the main body housing and having a battery mounting portion in which the battery is mounted;
Equipped with
the battery mounting portion has a rail portion including a first engagement portion and a second engagement portion for supporting the battery,
The battery holder includes:
a first member having the first engagement portion and capable of forming the rail portion;
an intermediate member fixable to the first member;
a second member having the second engagement portion and capable of forming the rail portion;
It is composed of
the second member is fixable to the first member via the intermediate member and is fixable to the first member without the intermediate member;
The rail portion formed when the second member is fixed to the first member via the intermediate member is an electrical device in which the distance between the first engagement portion and the second engagement portion in a direction perpendicular to the direction in which the battery is attached and detached is larger than the rail portion formed when the second member is directly fixed to the first member, thereby allowing a larger battery to be attached. A drive unit driven by the power of the battery ,
The electric device according to claim 1 or 2 , wherein when the second member is fixed to the first member via the intermediate member, the drive portion is housed in the first member and the intermediate member. The intermediate member is provided with a support member that supports the drive unit,
The electrical device according to claim 3 , wherein the second member is formed with a mounting portion to which the support member can be mounted. A drive unit driven by the power of the battery,
the battery mounting section is provided with a connection terminal unit for supplying power from the battery to the drive section;
The electrical device of claim 1, wherein the battery mounting portion formed when the second member is fixed to the first member via the intermediate member has two of the connection terminal units, thereby enabling power supply to the driving unit, and the battery mounting portion formed when the second member is fixed to the first member without the intermediate member has one of the connection terminal units, thereby enabling power supply to the driving unit . The electrical device according to claim 1 , wherein when the second member is fixed to the first member via the intermediate member, the intermediate member has a function similar to that of the second member when the second member is directly fixed to the first member . The electrical device described in claim 6, wherein the functions include at least one of a function of supporting a configuration contained in the main housing or the battery holder, a function of supporting the battery via an elastic body, or a function of supporting a connection terminal supported by the battery holder and electrically connected to the battery . 2. The electrical device of claim 1, wherein when the second member is fixed to the first member via the intermediate member and the battery holder holds two batteries, one of the batteries and the other of the batteries are arranged adjacent to each other and are arranged so that they do not overlap with each other when viewed in the adjacent direction . The second member is fixed to the first member by the intermediate member. 2. The electrical device according to claim 1, which is configured to be fixed to the main body housing.

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