WO2019058933A1 - Electrical equipment and equipment - Google Patents

Abstract

Provided is an electric apparatus, wherein the direction in which a battery pack vibrates with respect to an apparatus body can be restricted. Provided is an electric apparatus provided with: an apparatus body in which a battery pack (12) can be attached and detached; and a load part which is provided to the apparatus body and consumes the power of the battery pack (12). This electric apparatus has: a guide mechanism which is provided to the apparatus body and moves the apparatus body in a first predetermined direction (D1) with respect to the battery pack (12) when the apparatus body is attached to or detached from the battery pack; a support part (46) in contact with the battery pack (12); a first elastic member (50) which upon contact with the battery pack (12) biases the battery pack (12) in a circumferential direction around the support part (46), which serves as a pivot point; and a second elastic member (52) which positions the apparatus body and the battery pack (12) by contacting the battery pack (12) biased by the first elastic member (50) in the circumferential direction around the support part (46) serving as a pivot point.

Description

Electrical equipment and equipment

The present invention relates to an electric device and an electric device capable of attaching and detaching a battery pack. The electrical device and the electrical device include, in particular, cordless power tools, for example cordless power tools such as nailers and hammer drills, in which vibrations are generated from the device body.

Patent Document 1 describes an electric device and an electric device which is an example of an electric device capable of attaching and detaching a battery pack. The electric device described in Patent Document 1 includes an electric device and a battery pack. The device body of the electric device has a casing, a grip and a mounting portion. The mounting portion has a guide rail, a guide groove and an apparatus side terminal.

The battery pack has a case body, a cover and a battery pack. The case body has an opening, and the cover is attached to the case body and covers the opening. The cover has a guide rail and a guide groove. A battery cell is accommodated in the case main body, and a holder for holding the battery cell is provided. The circuit board is attached to the holder, and the battery side terminal is provided on the circuit board.

When the user attaches the battery pack to the mounting portion, the user causes the guide rail of the battery pack to enter the guide groove of the mounting portion and causes the guide rail of the mounting portion to enter the guide groove of the battery pack. When the user attaches the battery pack to the mounting portion, the device side terminal and the battery side terminal are connected. The electric device can supply the electric power of the battery cell to the electric motor through the device terminal. The rotational force of the electric motor is transmitted to the tip tool, and the tip tool rotates. In addition, the electric tool which is an example of the electric equipment which can attach or detach a battery pack is described also in patent documents 2 and 3. FIG.

Patent No. 6048192 JP, 2016-221595, A JP 2003-220579 A

However, in the case of the electric device described in Patent Documents 1, 2 and 3, in the case of the electric device in which strong vibration or reaction occurs during use, the vibration or reaction of the electric device may affect the life of the battery pack. The

An object of the present invention is to provide an electric device and an electric device that suppress the influence of the battery pack from the device body.

The electric apparatus according to one embodiment is an electric apparatus including an apparatus body to which a battery pack can be attached and detached, and a load unit provided on the apparatus body and consuming power of the battery pack, A guide mechanism provided in the device body, for moving the device body relative to the battery pack in a first predetermined direction when the device body is attached to and removed from the battery pack; And a supporting portion in contact with the battery pack, and a first elastic member provided on the device body and biasing the battery pack in a circumferential direction with the supporting portion as a fulcrum when contacting the battery pack And the battery pack is in contact with the battery pack provided on the device body and urged in the circumferential direction by the first elastic member with the support portion as a fulcrum. A second elastic member for positioning the click, the.

An electric device according to another embodiment includes a battery pack for holding battery cells, an apparatus main body to which the battery pack can be attached and detached, and a load unit provided to the apparatus main body and consuming power of the battery pack. An electric device including the battery pack and the device body, and the battery pack is attached to and removed from the device body when the battery pack is attached to and removed from the device body. A guide mechanism for moving in a predetermined direction, a support portion provided at a position where the device body and the battery pack contact each other, and a device provided between the device body and the battery pack, and the battery pack is the device A first elastic member for urging the battery pack in the circumferential direction with the support portion as a fulcrum when attached to the main body, and provided between the device body and the battery pack And having a second elastic member for positioning the battery pack, with respect to the apparatus body which is biased in the circumferential direction as a fulcrum the supporting portion by the first elastic member.

According to the electrical device of one embodiment, it is possible to suppress the influence of the battery pack from the device body.

1 is a side cross-sectional view of an electrical device that is an embodiment of the present invention. FIG. 2 is a partial perspective view of the electrical device shown in FIG. 1; It is an electric apparatus shown in FIG. 1, and is a rear view of the state which attached the battery pack to the driving machine. It is an electric apparatus shown in FIG. 1, and is a rear view of the state which removed the battery pack from the driving machine. It is a block diagram showing a control system of an electric device. It is a rear view which shows the mounting part of a driving machine. It is a schematic cross section of the state which attached the battery pack to the mounting part of the driving machine. It is a partial side cross-sectional view which shows the mounting part of a driving machine. It is an exploded perspective view of a battery pack. FIG. 10 is a partial side cross-sectional view showing the first example of the battery pack and the mounting portion and showing a state in which the battery pack is removed from the mounting portion. FIG. 10 is a partial side cross-sectional view showing the first example of the battery pack and the mounting portion and showing a state in which the battery pack is mounted to the mounting portion. It is a perspective view of a battery pack. It is a top view of a battery pack. FIG. 10 is a partial side cross-sectional view showing the battery pack and the mounting unit according to the second specific example and illustrating a state in which the battery pack is removed from the mounting unit. FIG. 10 is a partial side cross-sectional view showing a specific example 2 of the battery pack and the mounting portion and showing a state in which the battery pack is mounted to the mounting portion. FIG. 21 is a partial side cross-sectional view showing the third example of the battery pack and the mounting portion and showing a state in which the battery pack is removed from the mounting portion. FIG. 21 is a partial side cross-sectional view showing the third example of the battery pack and the mounting portion and showing a state in which the battery pack is mounted to the mounting portion. It is a typical side view showing an example which attached a battery pack to an impact driver. It is a typical side view showing the example which attached the battery pack to the grinder. It is a typical side view showing the example which attached the battery pack to the cleaner.

Hereinafter, an embodiment of an electric device and an electric device will be described in detail based on the drawings. In each of the drawings, the same reference numerals are given to the common elements.

In the present embodiment, a driving machine is disclosed as an example of the electric device. The electric apparatus 10 shown in FIG. 1, FIG. 2, FIG. 3 and FIG. 4 has a driving machine 11 and a battery pack 12. As shown in FIG. 1, the driving machine 11 has an apparatus body 13, an electric motor 14, a striking unit 15, a pressure chamber 16, a rotating element 17 and a magazine 18. The device body 13 has a cylinder case 19, a handle portion 20, a motor case 21, an injection portion 22 and a mounting portion 23. The handle portion 20 and the motor case 21 are connected to the cylinder case 19, and the mounting portion 23 is connected to the handle portion 20 and the motor case 21. The injection unit 22 is fixed to the cylinder case 19 and has an injection passage.

The magazine 18 accommodates the stopper 24. The plurality of fasteners 24 are accommodated in the magazine 18 in a row while being connected to one another. The magazine 18 linearly accommodates the plurality of stoppers 24. The magazine 18 has a feeder, and the feeder sends the stopper 24 accommodated in the magazine 18 to the ejection unit 22. A metal cylinder 25 is provided in the cylinder case 19, and the striking portion 15 can be reciprocated along the second predetermined direction D2. The second predetermined direction D2 is a direction parallel to the center line A1 of the cylinder 25. The striking portion 15 has a piston 26 and a driver blade 27 as an example. The piston 26 is movable in the cylinder 25 in the direction of the center line A 1, and the driver blade 27 is movable in the injection portion 22 in the direction of the center line A 1. The driver blade 27 has a rack.

The pressure chamber 16 is filled with gas. As the gas, in addition to air, an inert gas such as nitrogen gas or a rare gas can be used. In the present embodiment, it is assumed that the pressure chamber is filled with air.

As shown in FIG. 1, the push lever 28 is attached to the ejection portion 22, and the push lever 28 is movable in the direction of the center line A 1 with respect to the ejection portion 22. The electric motor 14 is disposed in the motor case 21. The electric motor 14 is, for example, a brushless motor, and the electric motor has a stator and a rotor. The rotor is rotatable about an axis A2. The electric motor 14 consumes power of the battery pack 12. The axis A2 intersects the center line A1. When the electric device 10 is viewed from the side as shown in FIG. 1, the center line A1 and the axis A2 are disposed at right angles.

A reduction gear 29 is provided in the motor case. The reduction gear 29 is configured by, for example, a planetary gear mechanism, and the reduction gear 29 transmits the rotational force of the electric motor 14 to the rotating element 17.

The rotating element 17 is provided in the cylinder case 19. The rotating element 17 is rotated by the rotational force output from the reduction gear 29. The rotating element 17 has a plurality of pinion pins. The plurality of pinion pins are provided at intervals in the rotational direction of the rotary element 17. Each of the plurality of pinion pins is independently engageable and releasable with respect to the rack of the driver blade 27. That is, a rack and pinion mechanism is configured by the rack provided on the driver blade 27 and the pinion pin of the rotating element.

A trigger 30 is provided on the handle portion 20. The user applies an operating force to the trigger 30. A trigger switch 31 is provided in the handle portion 20. When an operating force is applied to the trigger 30, the trigger switch 31 is turned off. When the operating force of the trigger 30 is released, the trigger switch 31 is turned off. The push lever switch 32 shown in FIG. The push lever switch 32 is turned off when the push lever 28 is separated from the object B1 as shown in FIG. The push lever switch 32 turns on when the push lever 28 is pressed against the object B1. A position detection sensor 33 shown in FIG. 5 is provided in the device body 13. The position detection sensor 33 detects the position of the striking portion 15 in the center line A1 direction. The position detection sensor 33 detects the position in the rotation direction of the rotary element 17 and outputs a signal, as an example.

As shown in FIG. 1, the control unit 34 is provided inside the device body 13. As shown in FIG. 5, the control unit 34 includes a microcomputer 35 and an inverter circuit 36. The microcomputer 35 has an input / output interface, a central processing unit, and a storage unit. The inverter circuit 36 has a plurality of switching elements, and is connected to the stator of the electric motor 14. The microcomputer 35 controls on / off of a plurality of switching elements.

The control unit 34 is activated by the power of the battery pack 12. The control unit 34 detects the signal of the trigger switch 31, the signal of the push lever switch 32, and the signal of the position detection sensor 33. The control unit 34 processes various signals to control the inverter circuit 36 and switches between rotation and stop of the electric motor 14.

(Specific Example 1 of Mounting Unit) The mounting unit 23 is made of synthetic resin. The mounting portion 23 and the battery pack 12 are relatively movable in the first predetermined direction D1. For example, when the user moves the battery pack 12 in the first direction F1 in the first predetermined direction D1 with the mounting unit 23 stopped, the battery pack 12 can be attached to the mounting unit 23. On the other hand, when the user moves the battery pack 12 in the second direction opposite to the first direction F1 in the first predetermined direction D1 in a state in which the user stops the mounting portion 23, the battery pack 12 is mounted in the mounting portion 23 It is possible to remove from.

In the electric device 10 shown in FIG. 1, as an example, a first predetermined direction D1 and a second predetermined direction D2 are parallel. As shown in FIG. 6, the mounting portion 23 has a base 37, a recess 38, a wall 39 and a guide mechanism 40. The base portion 37 connects the handle portion 20 and the motor case 21. The recess 38 is provided by cutting away a portion of the base 37, and the wall 39 is provided on the base 37. The recess 38 and the wall 39 are spaced apart in the first predetermined direction D1. The recessed portion 38 is provided in the same range as the portion where the handle portion 20 and the base portion 37 are connected in the first predetermined direction D1. The wall 39 is disposed between the recess 38 and the motor case 21 in the first predetermined direction D1. The wall 39 protrudes from the base 37 in the direction of the axis A2.

Further, as shown in FIG. 6, a mount portion 75 is provided at the center of the recess 38. The mount portion 75 protrudes from the surface of the recess 38. As shown in FIG. 1, in a side view of the electric device 10 including the center line A1 and the axis A2, the direction perpendicular to the center line A1 can be grasped as the direction of the axis A2. A recess 38 is disposed between the wall 39 and the handle 20 in the direction of the axis A2.

Two guide mechanisms 40 are provided on the base 37. The two guide mechanisms 40 are disposed between the recess 38 and the wall 39 in the first predetermined direction D1. As shown in FIG. 7, the two guide mechanisms 40 each have a guide rail 41 and a guide groove 42. The two guide rails 41 are linearly arranged and arranged parallel to each other. The two guide grooves 42 are arranged linearly and parallel to each other. The two guide rails 41 and the two guide grooves 42 are disposed in parallel with the first predetermined direction D1 as shown in FIG. Notches 43 are respectively provided in the two guide rails 41.

As shown in FIG. 8, a portion of the guide rail 41 where the guide groove 42 is formed has a guide portion 44 along the first predetermined direction D1. The height H1 from the side surface 45 of the guide rail 41 to the guide portion 44 is constant. The guide rail 41 has a support 46 that protrudes from the guide 44. The support portion 46 is disposed between the notch 43 and the wall 39 in the first predetermined direction D1. The height H2 from the end face of the side surface 45 to the support portion 46 is higher than the height H1. The heights H1 and H2 are the heights in the direction intersecting the first predetermined direction D1, that is, the heights in the direction of the axis A2 in FIG.

The apparatus side terminal 47 is provided in the mounting part 23 like FIG.4, FIG.6, FIG.8. The device side terminal 47 is made of a conductive material, for example, copper or steel as an example, and the device side terminal 47 has a plate shape. The device side terminal 47 is fixed to the terminal holder 48, and the terminal holder 48 is attached to the base 37.

The base portion 37 has ribs 82, 83 and a holding hole 84, and the ribs 82, 83 form the holding hole 84. A part of the terminal holder 48, for example, the outer peripheral end of the terminal holder 48 is disposed in the holding hole 84 and disposed between the rib 82 and the rib 83. The distance between the rib 82 and the rib 83 is larger than the dimension of the terminal holder 48, for example, the thickness. Therefore, the terminal holder 48 and the plurality of device terminals 47 are movable relative to the base 37. That is, the terminal holder 48 and the plurality of device terminals 47 are movable within a predetermined range in a direction intersecting the first predetermined direction D1 with respect to the base 37. Further, the size of the holding hole 84 in the first predetermined direction D1 exceeds the size of the terminal holder 48 in the first predetermined direction D1. For this reason, the terminal holder 48 and the plurality of device terminals 47 are movable within a predetermined range with respect to the base 37 in the first predetermined direction D1.

The device side terminal 47 is connected to the inverter circuit 36 shown in FIG. As illustrated in FIG. 6, the device-side terminal 47 is disposed between the guide mechanism 40 and the guide mechanism 40. A plurality of device terminals 47 are arranged at intervals in a direction intersecting with the first predetermined direction D1, specifically, in a direction perpendicular to the first predetermined direction D1. The plurality of device terminals 47 are disposed between the recess 38 and the wall 39 in the first predetermined direction D1.

As shown in FIGS. 6 and 8, the first elastic member 50 is provided on the base 37. The first elastic member 50 is provided between the wall 39 and the plurality of device terminals 47 in the first predetermined direction D1. As shown in FIG. 8, the hole 37 is provided in the base 37, and the first elastic member 50 is fitted in the hole 51. A second elastic member 52 is provided in the recess 38. As shown in FIG. 6, the second elastic member 52 is attached to the recess 38 on both sides of the mount 75. A hole 53 is provided in the recess 38, and the second elastic member 52 is fitted in the hole 53. The support portion 46 is provided between the first elastic member 50 and the second elastic member 52 in the first predetermined direction D1. The first elastic member 50 is provided in front of the support portion 46 in the first direction F1 in the first predetermined direction D1. The first elastic member 50 and the second elastic member 52 are made of, for example, a polymeric material having rubber elasticity. The first elastic member 50 and the second elastic member 52 can be made of synthetic rubber, silicone rubber, or soft resin, for example.

The elasticity of the first elastic member 50, for example, the elastic modulus, and the elasticity of the second elastic member 52, for example, the elastic modulus may be the same or different. As an example, it is possible to make the elastic modulus of the first elastic member 50 lower than the elastic modulus of the second elastic member 52, that is, make the first elastic member 50 softer than the second elastic member 52. . The means for making the elastic modulus of the first elastic member 50 lower than the elastic modulus of the second elastic member 52 includes at least one of setting of dimension, setting of shape, and setting of material.

Furthermore, as shown in FIG. 8, the support portion 46 is disposed at a position where the third distance L3 is shorter than at least one of the first distance L1 and the second distance L2 in the first predetermined direction D1. There is. The first distance L1 can be grasped as a distance from the center of the support portion 46 to the center of the first elastic member 50 in the first predetermined direction D1. The second distance L2 can be grasped as a distance from the center of the support portion 46 to the center of the second elastic member 52 in the first predetermined direction D1. Furthermore, the third distance L3 can be grasped as a distance from the center of the support portion 46 to the center of the device-side terminal 47.

Furthermore, in the first predetermined direction D1, it is preferable that the third distance L3 between the support portion 46 and the device-side terminal 47 be as short as possible. More preferably, in the first predetermined direction D1, the arrangement range of the support portion 46 and the arrangement range of the device-side terminal 47 preferably partially overlap.

The first distance L1 can also be grasped as the shortest distance from the support portion 46 to the first elastic member 50 in the first predetermined direction D1. The second distance L2 can also be grasped as the shortest distance from the support portion 46 to the second elastic member 52 in the first predetermined direction D1. The third distance L3 can also be grasped as the shortest distance from the support portion 46 to the device-side terminal 47.

The driving machine 11 shown in FIG. 1 is driven in a state in which elements such as the electric motor 14, the reduction gear 29, the striking unit 15, the pressure chamber 16, the rotating element 17, the control unit 34 are provided in the device body 13. When the insertion machine 11 is viewed from the side as shown in FIG. 1, the center of gravity E1 of the driving machine 11 is located at the trigger 30. The center of gravity E1 is located between the striking portion 15 and the mounting portion 23 in the third predetermined direction D3. The third predetermined direction D3 is parallel to the axis A2. The third predetermined direction D3 intersects the first predetermined direction D1 and the second predetermined direction D2 in a side view of the electric device 10 shown in FIG.

(Specific Example 1 of Battery Pack) Next, the structure of the battery pack 12 will be specifically described. As shown in FIG. 9, the battery pack 12 has a case 54, a plurality of battery cells 55, a control board 56, and a plurality of battery side terminals 57. The case 54 has a box-shaped main body 58 and a cover 60 covering the opening 59 of the main body 58. The main body 58 is integrally molded of an insulating material, for example, a synthetic resin.

As shown in FIGS. 10 and 11, the plurality of battery cells 55 are accommodated in the case 54. A holder 61 shown in FIG. 9 holds a plurality of battery cells 55. The holder 61 is made of an insulating material, for example, a synthetic resin. Each of the battery cells 55 is a secondary battery, and each of the battery cells 55 includes a lithium ion battery, a nickel cadmium battery, a nickel hydrogen battery, and the like. In the plurality of battery cells 55, the positive electrode and the negative electrode are connected in series with each other.

The control board 56 is attached to the holder 61, and the control board 56 and the holder 61 are disposed inside the case 54. The control board 56 is made of an insulating material, for example, a synthetic resin, and the control board 56 is provided with an electric circuit. Therefore, the control board 56 can also be grasped as a circuit board. With the cover 60 fixed to the main body 58, the control board 56 is located between the cover 60 and the holder 61.

The plurality of battery side terminals 57 are attached to the control board 56. The plurality of battery side terminals 57 are made of a conductive material, for example, copper. The plurality of battery side terminals 57 includes a positive electrode terminal for charging, a positive electrode terminal for discharging, a terminal for outputting a temperature signal, a terminal for outputting an overcharge signal, a type detection terminal for outputting a signal for determining a battery type, charging and It includes a negative electrode terminal for discharging, and a voltage terminal for outputting a signal indicating a voltage. The tab 62 shown in FIGS. 10 and 11 is connected to the battery cell 55. The tab 62 is made of a conductive material, for example, copper or steel, and the tab 62 connects the battery cell 55 and the electric circuit of the control board 56. A plurality of, for example, two tabs 62 are provided. The two tabs 62 are spaced apart in the first predetermined direction D1.

A microcomputer and a temperature sensor are attached to the control substrate 56, and among the plurality of battery side terminals 57, a positive electrode terminal for charging, a positive electrode terminal for discharging, and a negative electrode terminal for charging and discharging are the battery cells 55 and Each is connected to a microcomputer. The type detection terminal of the temperature sensor and the battery side terminal 57 is connected to the negative terminal for charging and discharging, respectively. Among the plurality of battery side terminals 57, a terminal for outputting an overcharge signal and a voltage terminal are respectively connected to the microcomputer.

The cover 60 is made of an insulating material, for example, a synthetic resin. The screw member is tightened to fix the cover 60 to the main body 58 as shown in FIG. 12, and the battery pack 12 is assembled. The cover 60 has a base portion 63, a terminal accommodating portion 64, and a mount portion 65 as shown in FIGS. The base 63, the terminal accommodating portion 64, and the mounting portion 65 are connected to one another. The mount portion 65 is provided with a recess 76. As shown in FIG. 12, two sets of guide mechanisms 66 are provided at connection points between the base portion 63 and the terminal accommodating portion 64. The guide mechanism 66 and the guide mechanism 66 are disposed in parallel to each other. The two guide mechanisms 66 each have a guide groove 67 and a guide rail 68. The guide rail 68 and the guide groove 67 are arranged linearly.

The opening 69 is provided at a location where the terminal accommodating portion 64 and the base portion 63 are connected, and the terminal accommodating portion 64 is provided with a plurality of slits 70. The plurality of slits 70 are connected to the opening 69, and the plurality of slits 70 are connected to the inside of the case 54. In a plan view of the battery pack 12 shown in FIG. 13, the plurality of slits 70 cut out the terminal accommodating portion 64 along the first predetermined direction D1.

The plurality of slits 70 are arranged side by side between the guide mechanism 66 and the guide mechanism 66 in a direction intersecting with the first predetermined direction D1. As shown in FIG. 9 and FIG. 12, an engagement hole 71 is provided which penetrates the connection portion between the base portion 63 and the terminal accommodating portion 64. The engagement holes 71 are disposed in the guide grooves 67, respectively.

As shown in FIG. 13, the latch 72 is attached to the cover 60. The latches 72 are provided on both sides of the mount portion 65, respectively. The two latches 72 are spaced apart in the direction intersecting with the first predetermined direction D1. The two latches 72 each have an operating portion 73 and a hook 74. The two latches 72 are movable relative to the cover 60 within a predetermined range. The hooks 74 are disposed across the engagement holes 71 and the guide grooves 67.

As shown in FIGS. 10, 11 and 13, the center of gravity E 2 of the battery pack 12 is located inside the case 54. When the battery pack 12 is viewed from the side as shown in FIGS. 10 and 11, the center of gravity E2 of the battery pack 12 is located substantially at the center of the battery pack 12 in the first predetermined direction D1. When the battery pack 12 is viewed from the side, the center of gravity E2 of the battery pack 12 is located between the tab 62 and the tab 62 in the first predetermined direction D1. In the height direction of the battery pack 12, the position of the center of gravity E2 of the battery pack 12 and the position of the two tabs 62 are different. The height direction of the battery pack 12 is a direction perpendicular to the first predetermined direction D1 in FIGS. 10 and 11.

Next, an operation of the user attaching the battery pack 12 to the mounting portion 23 and an operation of the user removing the battery pack 12 from the mounting portion 23 will be described. Here, an example in which the user moves the battery pack 12 with respect to the mounting unit 23 and the mounting unit 23 is stopped will be described.

Before the user attaches the battery pack 12 to the mounting portion 23, the battery pack 12 and the mounting portion 23 are arranged such that the guide mechanism 40 and the guide mechanism 66 are substantially coaxial. Then, the user moves the battery pack 12 in parallel in the first predetermined direction D1, and brings the battery pack 12 close to the mounting portion 23. Among the first predetermined direction D1, the direction in which the user brings the battery pack 12 closer to the mounting portion 23 in FIGS. 1 and 10 is referred to as a first direction F1. The user moves the battery pack 12 in the first direction F 1, causes the guide rail 68 to enter the guide groove 42, and causes the guide rail 41 to enter the guide groove 67.

The support 46 is separated from the guide rail 68 of the cover 60 from when the guide rail 68 enters the guide groove 42 until the first elastic member 50 contacts the base 63 of the cover 60. In addition, even if the support part 46 contacts the guide rail 68 of the cover 60, the contact resistance is small. Also, no biasing force is applied to the battery pack 12 from the first elastic member 50. Furthermore, the second elastic member 52 is not in contact with the cover 60.

While the battery pack 12 is moving in the first direction F1 with respect to the mounting portion 23, the plurality of device side terminals 47 pass through the opening 69 and enter the slits 70 independently, and the plurality of devices The side terminals 47 are individually electrically connected to the plurality of battery side terminals 57, respectively. Furthermore, the mount portion 75 enters the recess 76.

As shown in FIG. 11, when the front end of the first direction F1 of the battery pack 12 contacts the wall 39 or the mount 75 contacts the mount 65, the battery pack 12 stops. Before the battery pack 12 stops, the first elastic member 50 contacts the base 63 of the cover 60. Therefore, the first elastic member 50 is elastically deformed, and a biasing force is applied from the first elastic member 50 to the battery pack 12. The position where the first elastic member 50 contacts the base 63 of the cover 60 is in front of the center of gravity E2 of the battery pack 12 in the first direction F1. Therefore, the battery pack 12 moves in a direction in which the guide rails 68 of the cover 60 are pressed against the guide rails 41 of the mounting portion 23.

Then, the support portion 46 contacts the guide rail 68 of the cover 60, and clockwise rotation with the contact point of the support portion 46 and the guide rail 68 as a fulcrum from the first elastic member 50 to the battery pack 12 Power is added. For this reason, the mount portion 65 of the cover 60 is pressed against the second elastic member 52 when the battery pack 12 is stopped. That is, the second elastic member 52 is seated on the mount portion 65 in a state of being elastically deformed. When the second elastic member 52 is pressed against the mount portion 65 and the battery pack 12 is stopped, the second elastic member 52 has the battery pack 12 and the mounting portion 23 in the circumferential direction about the support portion 46. And position. With the second elastic member 52 positioned the battery pack 12 and the mounting portion 23, the plurality of device terminals 47 and the plurality of battery terminals 57 are electrically connected independently.

In addition, before the battery pack 12 stops, the guide rails 41 of the mounting portion 23 contact the hooks 74 of the latch 72, and the latch 72 moves toward the inside of the cover 60. Then, when the battery pack 12 stops, the latch 72 moves toward the outside of the cover 60, and the hook 74 enters the notch 43 of the guide rail 41. Then, the battery pack 12 is kept attached to the mounting portion 23 by the engagement force between the hook 74 and the guide rail 41. That is, the hooks 74 and the guide rails 41 play a role of a locking mechanism that prevents the battery pack 12 from coming off the mounting portion 23. With the battery pack 12 attached to the mounting portion 23, the first elastic member 50 contacts the portion 77 of the base 63 as shown in FIG. The second elastic member 52 contacts the portion 123 of the mount portion 65 as shown in FIG.

Next, an example of using the electric device 10 in a state where the battery pack 12 is attached to the attachment portion 23 will be described. The user can hold the handle portion 20 by hand, apply an operating force to the trigger 30, and press the push lever 28 against the object B1. When the surface of the object B1 is flat as an example, the user presses the push lever 28 against the object B1 so that the center line A1 is substantially perpendicular to the surface of the object B1.

The control unit 34 turns off the switching element of the inverter circuit 36 when it detects at least one of the turn-off of the trigger switch 31 and the turn-off of the push lever switch 32. Therefore, the electric power of the battery pack 12 is not supplied to the electric motor 14, and the electric motor 14 is stopped. Further, the striking unit 15 is stopped at the standby position.

When detecting that the trigger switch 31 is turned on and the push lever switch 32 is turned on, the control unit 34 controls the inverter circuit 36 to supply the electric motor 14 with the electric power of the battery pack 12. The rotational force of the electric motor 14 is transmitted to the striking unit 15 via the reduction gear 29 and the rotating element 17. Then, the striking portion 15 moves from the standby position in the second movement direction G2 against the force of the pressure chamber 16, that is, rises. When the striking portion 15 reaches a predetermined position, that is, the top dead center, the force of the rotary element 17 is not transmitted to the striking portion 15. Then, the striking portion 15 moves in the first movement direction G1 by the force of the pressure chamber 16, and the driver blade 27 strikes the fastener 24. The stopper 24 is driven into the object B1. Thereafter, the striking unit 15 collides with the bumper and stops. Furthermore, the force of the rotary element 17 is transmitted to the striking part 15, and the striking part 15 is raised in FIG. The control unit 34 stops the electric motor 14 when the striking unit 15 reaches the standby position. The first movement direction G1 and the second movement direction G2 are an example of the directions in the second predetermined direction D2. The first movement direction G1 and the second movement direction G2 are opposite to each other.

When the user removes the battery pack 12 from the mounting unit 23, the operation unit 73 is pressed while the electric motor 14 is stopped. Then, the latch 72 moves toward the inside of the cover 60, and the hook 74 exits from the notch 43. That is, the lock mechanism is released. The user moves the battery pack 12 with respect to the mounting portion 23 in the second direction F2 of the first predetermined direction D1 in a state where the hook 74 is withdrawn from the notch 43. The second direction F2 is opposite to the first direction F1.

When moving the battery pack 12 in the second direction F2, while the first elastic member 50 is pressed against the base 63 of the cover 60, the first elastic member 50 and the base 63 rub against each other. When the first elastic member 50 separates from the cover 60, the first elastic member 50 returns to its original shape by elastic restoring force. In addition, the biasing force applied to the battery pack 12 from the first elastic member 50 is released, and the support portion 46 is separated from the guide rail 68 of the cover 60. When the guide rail 68 withdraws from the guide groove 42 and the guide rail 41 withdraws from the guide groove 67, the user can remove the battery pack 12 from the mounting portion 23.

When the user uses the electric device 10 in a state where the battery pack 12 is attached to the mounting portion 23, the striking force when the striking portion 15 strikes the fastener 24, and the striking portion 15 strikes the fastener 24 By the reaction force, the driving machine 11 shown in FIG. 1 vibrates in the circumferential direction within a predetermined angular range with the center of gravity E1 as the center. The vibration of the driving machine 11, in particular, the vibration of the device body 13 is transmitted to the battery pack 12 via the mounting portion 23. As a result, the device body 13 and the battery pack 12 vibrate together. Here, at least one of the natural frequency of the device body 13 or the vibration mode is different from at least one of the natural frequency of the battery pack 12 or the vibration mode.

When the battery pack 12 is attached to the mounting portion 23 as shown in FIG. 11, as viewed from the side of the electric device 10 as shown in FIG. 1, the center line A1 and the center of gravity E2 of the battery pack 12 in the direction of the axis A2. The center of gravity E1 of the support portion 46 and the driving machine 11 is positioned between them. The support portion 46 is located between the center of gravity E2 of the battery pack 12 and the center of gravity E1 of the driving machine 11 in the direction of the axis A2. Therefore, when the device body 13 shown in FIG. 1 vibrates in the circumferential direction within the range of a predetermined angle around the center of gravity E1, the battery pack 12 vibrates regularly without complex or irregular vibrations. Do.

Specifically, the vibration direction of the battery pack 12 is restricted in the circumferential direction with the contact point between the support portion 46 and the guide rail 68 as a fulcrum, that is, in an arc shape. The vibration range of the battery pack 12 is a range of a predetermined angle corresponding to the amount of elastic deformation of the first elastic member 50 and the second elastic member 52, with the contact point between the support portion 46 and the guide rail 68 as a fulcrum. Regulated within. The predetermined angle is, for example, less than 3 degrees.

Thus, in the electric device 10, the amount by which the device side terminal 47 and the battery side terminal 57 rub in a contact state, that is, the amount by which the plurality of device side terminals 47 and the plurality of battery side terminals 57 move relatively increases. Can be suppressed, and the plurality of device-side terminals 47 and the plurality of battery-side terminals 57 interlock and vibrate. Therefore, at least one of the device-side terminal 47 and the battery-side terminal 57 can be suppressed from being worn at a location where the plurality of device-side terminals 47 and the plurality of battery-side terminals 57 are individually connected. Here, as the spring constant of the first elastic member 50 and the second elastic member 52 is larger, the predetermined angle indicating the range in which the battery pack 12 vibrates becomes smaller. Therefore, it is not necessary to change the shape and structure of the mounting part 23, and it can suppress that the cost of the apparatus main body 13 rises. Furthermore, by suppressing the influence of the battery pack 12 from the device main body 13, it is possible to prolong the life of the battery pack 12.

Further, the mass of the plurality of battery cells 55 as a whole is larger than the mass of the control substrate 56. Therefore, when the battery pack 12 vibrates, the plurality of battery cells 55 vibrate with respect to the control board 56. On the other hand, the electric device 10 of the present embodiment can restrict the vibration direction of the battery pack 12 and suppress the vibration range. Therefore, at least one of deformation of the tab 62, distortion of the tab 62, stress concentration on the tab 62, and breakage of the tab 62 can be suppressed. Furthermore, when the user drops the electrical device 10 and the battery pack 12 contacts the floor or the ground, the first elastic member 50 and the second elastic member 52 absorb part of the collision energy. Therefore, the vibration of the device body 13 can be suppressed.

Furthermore, when the battery pack 12 is attached to the mounting portion 23 as shown in FIG. 11, the fourth distance L4 shown in FIG. 11 is shorter than at least one of the first distance L1 or the second distance L2 shown in FIG. The position of the support 46 in the first predetermined direction D1 is set. The fourth distance L4 can be grasped as a distance from the center of the support portion 46 to the center of the battery-side terminal 57 in the first predetermined direction D1. The fourth distance L4 can also be grasped as the distance from the center of the support portion 46 to the center of the battery-side terminal 57 in the first predetermined direction D1.

In addition, when the user moves the battery pack 12 in the first direction F 1 and attaches the battery pack 12 to the mounting portion 23, the guide rail 68 is made to enter the guide groove 42 and the guide rail 41 to the guide groove 67 The cover 60 does not contact the first elastic member 50 and the second elastic member 52 does not contact the cover 60 until the cover 60 contacts the first elastic member 50 from the time of entry. Therefore, the frictional resistance between at least one of the first elastic member 50 and the second elastic member 52 and the cover 60 can be reduced as much as possible. That is, the operation load required when the user attaches the battery pack 12 to the mounting portion 23 can be reduced. Therefore, when a user attaches battery pack 12 to mounting part 23, it can control that operativity falls.

Furthermore, when the battery pack 12 is moved in the second direction F2 and the battery pack 12 is removed from the mounting portion 23, the cover 60 is separated from the first elastic member 50, and the second elastic member 52 is from the mount portion 65. Leave. For this reason, the operation load required when the user removes the battery pack 12 from the mounting portion 23 can be reduced. Therefore, when a user removes battery pack 12 from mounting part 23, it can control that operativity falls.

Furthermore, when attaching the battery pack 12 to the mounting portion 23, the load applied to the first elastic member 50 and the second elastic member 52 is increased. Further, when the battery pack 12 is removed from the mounting portion 23, the load applied to the first elastic member 50 and the second elastic member 52 is reduced. Each of the first elastic member 50 and the second elastic member 52 has a characteristic that the amount of deflection changes linearly in the process of increasing the load and the process of reducing the load. Further, the shapes of the first elastic member 50 and the shape of the second elastic member 52 are set such that the first elastic member 50 and the second elastic member 52 do not have a deflection amount equal to or more than a predetermined value. Therefore, it can suppress that durability of the 1st elastic member 50 and the 2nd elastic member 52 falls, and the lifetime of the 1st elastic member 50 and the 2nd elastic member 52 can be extended.

When the user grips the handle portion 20, the device body 13 generates a counter-clockwise reaction force with the center of gravity E1 shown in FIG. 1 as a fulcrum due to the reaction force when the fastener 24 is driven into the object B1 by the striking portion 15. Receive When the device body 13 receives a counterclockwise reaction force in FIG. 1, the battery pack 12 first receives a counterclockwise moment with the support portion 46 shown in FIG. 11 as a fulcrum. When battery pack 12 receives a counterclockwise moment in FIG. 11, first elastic member 50 receives a compressive load, and second elastic member 52 does not receive a compressive load. In the present embodiment, the elastic modulus of the first elastic member 50 can be set to be lower than the elastic modulus of the second elastic member 52. Therefore, when the battery pack 12 receives a counterclockwise moment in FIG. 11, it is possible to make the amount of elastic deformation of the first elastic member 50 as large as possible. That is, when the battery pack 12 receives a counterclockwise moment in FIG. 11, the vibration damping rate of the first elastic member 50 can be increased. Therefore, the shock to which the battery pack 12 is subjected, specifically, the shock to which the tab 62 is subjected can be reduced.

In addition, the terminal holder 48 and the plurality of device terminals 47 are provided movably within a predetermined range with respect to the base 37 of the mounting portion 23. Therefore, when the battery pack 12 vibrates with respect to the mounting portion 23, the device side terminal 47 and the battery side terminal 57 move substantially integrally. For this reason, the vibration state differs between the device side terminal 47 and the battery side terminal 57 due to the difference in mass between them, so that the device side terminal 47 and the battery side terminal 57 can be prevented from being rubbed. Therefore, the durability of the device side terminal 47 and the battery side terminal 57 is further improved.

Furthermore, the support portion 46 is provided at a position where the third distance L3 is shorter than at least one of the first distance L1 and the second distance L2 in the first predetermined direction D1. That is, the support portion 46 is provided at a position closer to the device-side terminal 47 than the first elastic member 50 and the second elastic member 52 in the first predetermined direction D1, more specifically, in the vicinity of the device-side terminal 47. Therefore, when the battery pack 12 is pivoted and vibrated with the support portion 46 as a pivot, the displacement amount of the battery side terminal 57 with respect to the device body 13 can be suppressed. That is, the displacement amount of the control board 56 and the tab 62 provided inside the battery pack 12 can be suppressed. Therefore, the durability of the battery pack 12 attached to the device body 13 is improved. Specifically, damage and wear of the battery side terminal 57 and the tab 62 can be reduced.

Furthermore, when the battery pack 12 is attached to the mounting portion 23, the support portion 46 is positioned such that the fourth distance L4 is shorter than at least one of the first distance L1 and the second distance L2 in the first predetermined direction D1. Provided in That is, the support portion 46 is provided at a position closer to the battery side terminal 57 than the first elastic member 50 and the second elastic member 52 in the first predetermined direction D1, and further near the battery side terminal 57. Therefore, when the battery pack 12 is pivoted and vibrated with the support portion 46 as a pivot, the displacement amount of the battery side terminal 57 with respect to the device body 13 can be suppressed. That is, the displacement amount of the control board 56 and the tab 62 provided inside the battery pack 12 can be suppressed. Therefore, the durability of the battery pack 12 attached to the device body 13 is improved. Specifically, damage and wear of the battery side terminal 57 and the tab 62 can be reduced.

(Specific Example 2 of Battery Pack and Mounting Unit) FIGS. 14 and 15 show a second specific example of the battery pack 12 and the mounting unit 23. The second elastic member 78 is provided on the mount portion 65 of the cover 60. The center of gravity E2 of the battery pack 12 is disposed between the second elastic member 78 and the battery side terminal 57 in the first predetermined direction D1. When the battery pack 12 shown in FIG. 14 is arranged like the battery pack 12 shown in FIG. 1, the center of gravity E2 of the battery pack 12 in a direction intersecting the first predetermined direction D1, for example, in the direction of axis A2 in FIG. The control board 56 and the plurality of battery side terminals 57 are disposed between the second elastic member 78 and the second elastic member 78. The terminal holder 48 in the second specific example of the mounting portion 23 is fixed so as not to move with respect to the base 37. The other structures of the battery pack 12 and the mounting portion 23 according to the second embodiment are the same as the other structures of the battery pack 12 and the mounting portion 23 according to the first embodiment.

When the user moves the battery pack 12 in the first direction F1 in FIG. 14 and attaches the battery pack 12 to the mounting portion 23, the battery pack 12 is urged clockwise with the support portion 46 as a fulcrum, The second elastic member 78 is pressed against the recess 38 of the mounting portion 23, and the battery pack 12 is attached to the mounting portion 23, as shown in FIG. The first elastic member 50 and the second elastic member 78 serve to position the battery pack 12 and the mounting portion 23.

Furthermore, in a state where the battery pack 12 is attached to the mounting portion 23 as shown in FIG. 15, the support portion 46 has a first predetermined direction D1 that is smaller than at least one of the first distance L1 and the second distance L2. The three distances L3 are provided at short positions. The second distance L2 is a distance between the center of the support portion 46 and the center of the second elastic member 78 in the first predetermined direction D1. That is, the support portion 46 is provided at a position closer to the device-side terminal 47 than the first elastic member 50 and the second elastic member 78 in the first predetermined direction D1, more specifically, in the vicinity of the device-side terminal 47. Therefore, when the battery pack 12 is pivoted and vibrated with the support portion 46 as a pivot, the displacement amount of the battery side terminal 57 with respect to the device body 13 can be suppressed. Therefore, the second example of the battery pack 12 and the mounting portion 23 can obtain the same effect as the first example of the battery pack 12 and the mounting portion 23.

Furthermore, when the battery pack 12 is attached to the mounting portion 23, the support portion 46 is positioned such that the fourth distance L4 is shorter than at least one of the first distance L1 and the second distance L2 in the first predetermined direction D1. Provided in That is, the support portion 46 is provided at a position closer to the battery side terminal 57 than the first elastic member 50 and the second elastic member 78 in the first predetermined direction D1, and further near the battery side terminal 57. Therefore, when the battery pack 12 is pivoted and vibrated with the support portion 46 as a pivot, the displacement amount of the battery side terminal 57 with respect to the device body 13 can be suppressed. Therefore, the second example of the battery pack 12 and the mounting portion 23 can obtain the same effect as the first example of the battery pack 12 and the mounting portion 23.

The other effects of the battery pack 12 and the mounting portion 23 in the specific example 2 are the same as the effects of the battery pack 12 and the mounting portion 23 in the specific example 1.

(Specific Example 3 of Battery Pack and Mounting Unit) FIGS. 16 and 17 show a specific example 3 of the battery pack 12 and the mounting unit 23. A first elastic member 79 is provided on the base 63 of the cover 60, and a second elastic member 80 is provided on the mount portion 65 of the cover 60. The first elastic member 79 and the second elastic member 80 are disposed at an interval in the first predetermined direction D1.

A plurality of, for example, two first elastic members 79 are arranged at intervals in a direction intersecting the first predetermined direction D1 in plan view of the battery pack 12 shown in FIG. The plurality of slits 70 are disposed between the first elastic member 79 and the first elastic member 79 in a direction intersecting with the first predetermined direction D1. The plurality of slits 70 are disposed between the first elastic member 79 and the mount portion 65 in the first predetermined direction D1. A plurality of, for example, two second elastic members 80 are arranged at intervals in a direction intersecting the first predetermined direction D1 in a plan view of the battery pack 12 shown in FIG.

Furthermore, as shown in FIG. 16, the two guide rails 68 each have a support 81. The support portion 81 is a portion of the guide rail 68 protruding toward the guide groove 67. The support portion 81 is provided at a position closest to the mount portion 65 in the guide rail 68 in the first predetermined direction D1. The battery side terminal 57, the support portion 81, and the center of gravity E2 of the battery pack 12 are located between the first elastic member 79 and the second elastic member 80 in the first predetermined direction D1. The battery side terminal 57 and the center of gravity E2 of the battery pack 12 are located between the support portion 81 and the first elastic member 79 in the first predetermined direction D1. The battery side terminal 57 is located between the center of gravity E2 of the battery pack 12 and the first elastic member 79 in the first predetermined direction D1.

When the battery pack 12 shown in FIG. 16 is arranged like the battery pack 12 shown in FIG. 1, the center of gravity E2 of the battery pack 12 in a direction intersecting the first predetermined direction D1, for example, in the direction of axis A2 in FIG. The battery side terminal 57 and the first elastic member 79 are disposed between the second elastic member 80 and the second elastic member 80. The terminal holder 48 in the specific example 3 of the mounting portion 23 is fixed so as not to move with respect to the base 37. The other structures of the battery pack 12 and the mounting portion 23 according to the third embodiment are the same as the other structures of the battery pack 12 and the mounting portion 23 according to the first embodiment.

The user moves the battery pack 12 in the first direction F1 in FIG. 16 to cause the guide rail 68 to enter the guide groove 42 and cause the guide rail 41 to enter the guide groove 67. Before the first elastic member 79 contacts the base 37 of the mounting portion 23, the support portion 81 does not contact the guide rail 41. In addition, even if the support part 81 contacts the guide rail 41, the contact resistance is relatively low. When the first elastic member 79 contacts the base 37 of the mounting portion 23, the first elastic member 79 elastically deforms, and the first elastic member 79 moves the battery pack 12 away from the base 37, that is, to the left in FIG. Turn towards.

Then, the support 81 is pressed against the guide rail 41, and the battery pack 12 is urged clockwise in FIG. 16 with the contact point between the support 81 and the guide rail 41 as a fulcrum. Then, the second elastic member 80 is pressed against the recess 38 of the mounting portion 23, and the battery pack 12 is attached to the mounting portion 23, as shown in FIG. The first elastic member 79 and the second elastic member 80 serve to position the battery pack 12 and the mounting portion 23.

Furthermore, in a state where the battery pack 12 is attached to the mounting portion 23 as shown in FIG. 15, the support portion 81 has a first predetermined direction D1 that is smaller than at least one of the first distance L1 or the second distance L2. The three distances L3 are provided at short positions. The first distance L1 is a distance between the center of the support portion 81 and the center of the first elastic member 79 in the first predetermined direction D1. The second distance L2 is a distance between the center of the support portion 81 and the center of the second elastic member 80 in the first predetermined direction D1. The third distance L3 is a distance between the center of the support portion 81 and the center of the device-side terminal 47 in the first predetermined direction D1. That is, the support portion 81 is provided at a position closer to the device-side terminal 47 than the first elastic member 79 and the second elastic member 80 in the first predetermined direction D1, more specifically, in the vicinity of the device-side terminal 47. Therefore, when the battery pack 12 is pivoted and vibrated with the support portion 81 as the pivot, the displacement amount of the battery side terminal 57 with respect to the device body 13 can be suppressed. Therefore, the third example of the battery pack 12 and the mounting portion 23 can obtain the same effect as the first example of the battery pack 12 and the mounting portion 23.

Furthermore, when the battery pack 12 is attached to the mounting portion 23, the support portion 81 is positioned such that the fourth distance L4 is shorter than at least one of the first distance L1 and the second distance L2 in the first predetermined direction D1. Provided in That is, the support portion 81 is provided at a position closer to the battery side terminal 57 than the first elastic member 79 and the second elastic member 80 in the first predetermined direction D1, more specifically, in the vicinity of the battery side terminal 57. Therefore, when the battery pack 12 is pivoted and vibrated with the support portion 81 as the pivot, the displacement amount of the battery side terminal 57 with respect to the device body 13 can be suppressed. Therefore, the third example of the battery pack 12 and the mounting portion 23 can obtain the same effect as the first example of the battery pack 12 and the mounting portion 23. The other effects of the specific example 3 of the battery pack 12 and the mounting portion 23 are the same as the effects of the specific example 1 of the battery pack 12 and the mounting portion 23.

(Another Example of Electrical Device) An electrical device 85 shown in FIG. 18 includes an impact driver 86 and a battery pack 12. The impact driver 86 includes an apparatus body 87, an electric motor 88, a reduction gear 89, a hammer 90 and a tool holding member 91. The tool holding member 91 supports a driver 92 as a tip tool. The device body 87 includes a motor case 93, a handle portion 94 and a mounting portion 23. The handle portion 94 is connected to the motor case 93, and the mounting portion 23 is connected to the handle portion 94. The battery pack 12 is movable relative to the mounting portion 23 in the first predetermined direction D1.

The electric motor 88, the reduction gear 89 and the hammer 90 are disposed in a motor case 93. The electric motor 88, the reduction gear 89, the hammer 90 and the tool holding member 91 are arranged concentrically about the axis A3. The electric motor 88, the hammer 90 and the tool holding member 91 are rotatable around an axis A3. The hammer 90 is movable in the direction of the axis A3.

The handle 96 is provided with a trigger 96. The device side terminal 47 and the control unit 97 are provided in the mounting unit 95, and the control unit 97 is connected to the electric motor 88 and the device side terminal 47. The control unit 97 is activated by the power of the battery pack 12. A battery cell 55 and a control board 56 are provided in the battery pack 12, and a battery side terminal 57 is provided on the control board 56.

The mounting unit 23 illustrated in FIG. 18 includes the guide mechanism 40 described in the first specific example of the mounting unit 23. The battery pack 12 shown in FIG. 18 has the guide mechanism 66 described in the first specific example of the battery pack 12.

When the user applies operating force to the trigger 96, the electric power of the battery pack 12 rotates the electric motor 88. The rotational force of the electric motor 88 is transmitted to the tool holding member 91 via the reduction gear 89 and the hammer 90. The driver 92 rotates to tighten the screw member. The hammer 90 applies a striking force in the rotational direction to the tool holding member 91 as the rotational force required to tighten the screw member increases. When the user releases the operating force of the trigger 96, the electric motor 88 is stopped.

It is also possible to provide the mounting portion 23 shown in FIG. 18 with the first elastic member 50 and the second elastic member 52 described in the first embodiment, and to provide the support portion 46. In addition, the first elastic member 50 and the support portion 46 described in the second embodiment may be provided in the mounting portion 23 illustrated in FIG. 18, and the second elastic member 78 may be provided in the cover 60 of the battery pack 12. Furthermore, it is possible to provide the first elastic member 79, the second elastic member 80, and the support portion 81 described in the third embodiment in the battery pack 12 shown in FIG.

The user can move the battery pack 12 in the first direction F <b> 1 and attach it to the mounting unit 23. In addition, the user can move the battery pack 12 in the second direction F2 and remove the battery pack 12 from the mounting portion 23. In the electric device 85 shown in FIG. 18, when any one of the specific example 1, the specific example 2 and the specific example 3 of the mounting portion 23 and the battery pack 12 is adopted, the same effect as the adopted specific example is obtained. be able to.

An electric device 98 shown in FIG. 19 has a grinder 99 and a battery pack 12. The grinder 99 has an apparatus body 100, a holder 101, an electric motor 102, a fan 104, a reduction gear 103, and a tool holding member 105. The tool holding member 105 supports the grindstone 106 as a tip tool. The device body 100 has a trunk portion 107 and a mounting portion 23. The holder 101 is fixed to the trunk portion 107. The mounting portion 23 is connected to the trunk portion 107. The battery pack 12 is movable relative to the mounting portion 23 in the first predetermined direction D1.

The electric motor 102 and the fan 104 are disposed in the body portion 107. The reduction gear 103 is provided in the holder 101, and the reduction gear 103 connects the tool holding member 105 and the electric motor 102 so that power can be transmitted. The device side terminal 47 and the control unit 108 are provided in the mounting unit 23, and the control unit 108 is connected to the electric motor 102 and the device side terminal 47. The control unit 108 is activated by the power of the battery pack 12. A battery cell 55 and a control board 56 are provided in the battery pack 12, and a battery side terminal 57 is provided on the control board 56.

When the electric motor 102 is rotated by the power of the battery pack 12, the rotational force of the electric motor 102 is transmitted to the tool holding member 105 via the reduction gear 103. The grinding wheel 106 rotates to polish the object. When the electric motor 102 is stopped, the grinding wheel 106 is stopped. The fan 104 is rotated by the rotational force of the electric motor 102. The electric motor 102 rotates about the axis A4, and the tool holding member 105 rotates about the axis A5. The axis A4 and the axis A5 are arranged to intersect, for example, at a right angle. The axis A5 is parallel to the first predetermined direction D1.

It is also possible to provide the mounting portion 23 shown in FIG. 19 with the first elastic member 50 and the second elastic member 52 described in the first example, and to provide the support portion 46. In addition, it is possible to provide the first elastic member 50 and the support portion 46 described in the second embodiment in the mounting portion 23 shown in FIG. 19 and provide the second elastic member 78 on the cover 60 of the battery pack 12. Furthermore, it is also possible to provide the first elastic member 79, the second elastic member 80, and the support portion 81 described in the third embodiment in the battery pack 12 shown in FIG.

The user can move the battery pack 12 in the first direction F <b> 1 and attach it to the mounting unit 23. In addition, the user can move the battery pack 12 in the second direction F2 and remove the battery pack 12 from the mounting portion 23. In the electric device 98 shown in FIG. 19, when any one of the specific example 1, the specific example 2 and the specific example 3 of the mounting portion 23 and the battery pack 12 is adopted, the same effect as the adopted specific example is obtained. be able to.

An electric device 109 shown in FIG. 20 has a cleaner 110 and a battery pack 12. The cleaner 110 has an apparatus body 111, a filter cover 112, an electric motor 113, a fan 114 and a filter 115. The device body 111 includes a motor case 116, a handle portion 117, and a mounting portion 118. The handle portion 117 is connected to the motor case 116, and the mounting portion 118 is connected to the handle portion 117. The motor case 116 has an exhaust hole 119. The battery pack 12 is movable relative to the mounting portion 118 in the first predetermined direction D1.

The filter cover 112 can be attached to and removed from the motor case 116. The filter cover 112 has an air inlet 120. The electric motor 113 and the fan 114 are disposed in the motor case 116. The device-side terminal 121 and the control unit 122 are provided in the mounting unit 118, and the control unit 122 is connected to the electric motor 113 and the device-side terminal 121. The control unit 122 is activated by the power of the battery pack 12. A battery cell 55 and a control board 56 are provided in the battery pack 12, and a battery side terminal 57 is provided on the control board 56. When the battery pack 12 is attached to the mounting portion 118, the device side terminal 121 and the battery side terminal 57 are connected.

When the electric motor 113 is rotated by the power of the battery pack 12, the fan 114 is rotated. When the fan 114 rotates, air outside the filter cover 112 is drawn into the filter cover 112 through the air inlet 120. The filter 115 captures foreign matter contained in the air drawn into the filter cover 112. The air whose foreign matter is permitted by the filter 115 passes through the suction port and the discharge port of the fan 114, and is discharged from the exhaust hole 119 to the outside of the device main body 111. When the electric motor 113 stops, the fan 114 stops. The electric motor 113 and the fan 114 are rotatable around an axis A6.

It is also possible to provide the mounting portion 118 shown in FIG. 20 with the first elastic member 50 and the second elastic member 52 described in the first embodiment, and to provide the support portion 46. The first elastic member 50 and the support 46 described in the second embodiment may be provided in the mounting portion 118 shown in FIG. 20, and the second elastic member 78 may be provided on the cover 60 of the battery pack 12. Furthermore, it is also possible to provide the first elastic member 79, the second elastic member 80, and the support portion 81 described in the third embodiment in the battery pack 12 shown in FIG.

In the electric device of the present embodiment, the user can move the battery pack 12 in the first direction F1 and attach it to the mounting portion 118. In addition, the user can move the battery pack 12 in the second direction F2 to remove the battery pack 12 from the mounting portion 118. In the electric device 109 shown in FIG. 20, when any one of the specific example 1, the specific example 2 and the specific example 3 of the mounting portion 23 and the battery pack 12 is adopted, the same effect as the adopted specific example is obtained. be able to.

In the first example of the mounting portion described above, the terminal holder 48 and the plurality of device side terminals 47 may be configured not to move relative to the mounting portion 23 as in the second and third specific examples of the mounting portion 23. Further, in the second and third specific examples of the mounting portion 23, the terminal holder 48 and the plurality of device side terminals 47 can be moved within a predetermined range with respect to the mounting portion 23 as in the first specific example of the mounting portion 23. You can also

In the electric device described in the embodiment, an example of stopping the device body, moving the battery pack in the first direction and attaching it to the mounting portion, and stopping the device body, moving the battery pack in the second direction The example which removes from a mounting part is demonstrated.

On the other hand, the electric device can also attach the battery pack to the mounting portion by stopping the battery pack and moving the device body in the second direction. Further, the battery pack can be removed from the mounting portion by stopping the battery pack and moving the device body in the first direction.

Furthermore, the electric device can also attach the battery pack to the mounting portion by moving both the battery pack and the device body in the first predetermined direction. The electric device can also remove the battery pack from the mounting portion by moving both the battery pack and the device body in the first predetermined direction.

Furthermore, attaching and detaching the battery pack to the device body can be grasped as attaching and detaching the device body to the battery pack. Positioning the battery pack relative to the device body can be understood as positioning the device body relative to the battery pack.

The first elastic member and the second elastic member in the embodiment include elements that are elastically deformed by an external force when attaching the battery pack to the mounting portion. Further, the first elastic member and the second elastic member include an element that returns to the original shape or a shape close to the original shape by an elastic restoring force when the external force is released when the battery pack is removed from the mounting portion. .

The matters described in the embodiments include the following meanings as an example. The driving machine 11, the impact driver 86, the grinder 99, and the cleaner 110 are examples of the electric device. The device bodies 13, 87, 100, and 111 are examples of the device body. The electric motors 14, 88, 102, 113, and the control units 34, 97, 108, 122 are examples of load units that consume the power of the battery pack. The first predetermined direction D1 is an example of a first predetermined direction. The second predetermined direction D2 is an example of a second predetermined direction. The third predetermined direction D3 is an example of a third predetermined direction. The guide mechanisms 40 and 66 are an example of a guide mechanism. The support parts 46 and 81 are an example of a support part. The first elastic members 50 and 79 are an example of a first elastic member. The second elastic members 52 and 80 are an example of a second elastic member. The device side terminals 47 and 121 are examples of the device side terminals.

The battery pack 12 is an example of a battery pack. The battery side terminal 57 is an example of a battery side terminal. The striking unit 15 is an example of a striking unit. The mounting units 23 and 118 are an example of the mounting unit. The fastener 24 is an example of a fastener. The center of gravity E1 is an example of the center of gravity of the device body. The center of gravity E2 is an example of the center of gravity of the battery pack. The battery cell 55 is an example of a battery cell, and the number of battery cells accommodated in the case 54 is arbitrary. Case 54 is an example of a case. The control substrate 56 is an example of a substrate. The tab 62 is an example of a voltage detection member. The ejection unit 22 is an example of an ejection unit, and the magazine 18 is an example of a magazine.

The electrical device or the electrical device is not limited to the disclosed embodiments, and various changes can be made without departing from the scope of the invention. For example, in a driving machine which is an example of an electric device, a first biasing mechanism for moving the striking portion in the first movement direction urges the striking portion with an elastic restoring force of an elastic member instead of the pressure chamber. May be. The elastic member includes a metal spring and a synthetic rubber. The second biasing mechanism for moving the striking portion in the second movement direction by the power of the electric motor includes a traction mechanism in addition to the rack and pinion mechanism. The traction mechanism has a cable connected to the striking portion, and a pulley wound with the cable and rotated by the power of the electric motor.

The electrical device is preferably applied to the field of electrical devices that generate large vibrations that adversely affect the battery pack, particularly in the field of power tools. Such an electric power tool includes a power tool for reciprocating the tool holding member, as well as a driving machine for reciprocating the tool holding member in a straight line. Examples of the electric power tool for causing the tool holding member to reciprocate include hammers, hammer drills, cutting machines such as jigsaws and saber saws, trimmers, hair clippers, hedge trimmers and the like. In addition, the electric apparatus includes an electric tool that rotates a tool holding member holding the tip tool by 360 degrees or more, such as a driver, a drill, a grinder, a sander, a circular saw, a chain saw, and the like. The electric apparatus includes a power tool, for example, a multi-tool, which reciprocates the tool holding member holding the tip tool within an angle range of less than 360 degrees. The multi-tool is also referred to as a rocking multi-function tool.

The load part includes an element rotating with electric power or an element reciprocating with electric power as well as an element not moving with electric power. Elements which do not move with power include, by way of example, microcomputers and lights. The electric apparatus includes one that does not have a tool holding member that rotates or reciprocates by the power of an electric motor, such as a blower, a cleaner, and a lighting device. Also, the battery cell may be a primary battery that can be charged only once.

Depending on the type of electrical equipment, the motion form of the tool holding member operated by the power of the electric motor differs such as rotational motion, reciprocation, reciprocation within the range of a predetermined angle, etc. . In the present embodiment, since the support portion is provided in the mounting portion, the vibration of the battery pack can be suppressed regardless of the vibration form of the device body.

The electric device includes one in which the first predetermined direction intersects with the second predetermined direction, in addition to one in which the first predetermined direction and the second predetermined direction are parallel to each other. The intersection of the first predetermined direction and the second predetermined direction means that the first straight line indicating the first predetermined direction intersects the second straight line indicating the second predetermined direction at 90 degrees; 2 includes straight lines that intersect at angles other than 90 degrees. The magazine includes one in which a plurality of stoppers are arranged in a spiral and housed.

11 ... driving machine, 12 ... battery pack, 13, 87, 100, 111 ... main body of apparatus, 14, 88, 102, 113 ... electric motor, 15 ... striking part, 16 ... pressure chamber, 18 ... magazine, 22 ... injection Parts, 23, 118 ... Mounting parts, 34, 97, 108, 122 ... Control parts, 40, 66 ... Guide mechanisms, 46, 81 ... Supporting parts, 50, 79 ... First elastic members, 47, 121 ... Equipment-side terminals , 52, 80: second elastic member, 54: case, 55: battery cell, 56: control board, 57: battery side terminal, 62: tab, 86: impact driver, 99: grinder, 110: cleaner, D1: first 1 predetermined direction, D2 ... second predetermined direction, D3 ... third predetermined direction, E1, E2 ... center of gravity.

Claims (15)

An electric apparatus comprising: an apparatus body to which a battery pack can be attached and removed; and a load unit provided in the apparatus body and consuming power of the battery pack,
A guide mechanism provided in the device body and moving the device body in a first predetermined direction with respect to the battery pack when attaching and detaching the device body to and from the battery pack;
A support provided on the device body and in contact with the battery pack;
A first elastic member provided in the device body and biasing the battery pack in a circumferential direction with the support portion as a fulcrum when contacting the battery pack;
The battery pack is provided in the device body, and is in contact with the battery pack circumferentially biased by the first elastic member with the support portion as a fulcrum, thereby positioning the device body and the battery pack An elastic member,
Have electrical equipment. The electric device according to claim 1, wherein the support portion is disposed between the first elastic member and the second elastic member in the first predetermined direction. The device body has a device side terminal electrically connected to the load unit,
The device-side terminal is electrically connected to the battery-side terminal of the battery pack in a state where the second elastic member positions the device body and the battery pack.
The supporting portion is at least one of a first distance from the supporting portion to the first elastic member or a second distance from the supporting portion to the second elastic member in the first predetermined direction. The electric device according to claim 2, wherein the third distance from the support portion to the device-side terminal is short. The electric device according to claim 3, wherein the device terminal is movable with respect to the device body. The load unit includes an electric motor that rotates with power supplied from the battery pack,
A striking portion provided on the device body so as to be movable in a second predetermined direction, and moved by the power of the electric motor;
An ejection unit through which the striking unit moves;
A magazine for supplying a fastener to the ejection unit;
Is provided,
The electric device according to any one of claims 1 to 4, wherein the striking part moves in the second predetermined direction to strike the stopper of the ejection part. The battery pack is moved relative to the device body in a first direction in the first predetermined direction and attached to the device body.
The battery pack is moved relative to the device body in a second direction opposite to the first direction in the first predetermined direction and removed from the device body.
The first elastic member is disposed in front of the support portion in the first direction in the first predetermined direction,
The electric device according to claim 5, wherein a modulus of elasticity of the first elastic member is lower than a modulus of elasticity of the second elastic member. An electric apparatus comprising: a battery pack for holding a battery cell; an apparatus body to which the battery pack can be attached and detached; and a load unit provided in the apparatus body and consuming power of the battery pack ,
A guide mechanism provided in the battery pack and the device body, and moving the battery pack in a first predetermined direction with respect to the device body when attaching and detaching the battery pack to and from the device body;
A supporting portion provided at a position where the device body contacts the battery pack;
A first elastic member provided between the device body and the battery pack and biasing the battery pack circumferentially with the support portion as a fulcrum when the battery pack is attached to the device body ,
Positioning the battery pack, which is provided between the device body and the battery pack and urged in a circumferential direction with the support portion as a fulcrum by the first elastic member, with respect to the device body 2 elastic members,
Having an electrical device. The support portion is provided on the device body,
The first elastic member is provided on the device body, and when in contact with the battery pack, biases the battery pack in the circumferential direction with the support portion as a fulcrum.
The second elastic member is provided on the device body, and is in contact with the battery pack circumferentially biased by the first elastic member with the support portion as a fulcrum, thereby the device body and the battery The electrical device of claim 7 wherein the pack is positioned. The support portion is provided on the device body, and contacts the battery pack,
The first elastic member is provided on the device body, and when in contact with the battery pack, biases the battery pack in the circumferential direction with the support portion as a fulcrum.
The second elastic member is provided on the battery pack, and when the battery pack is urged in the circumferential direction with the support portion as a fulcrum by the first elastic member, the second elastic member contacts the device body, The electric device according to claim 7, wherein the device body and the battery pack are positioned. The support portion is provided on the battery pack and contacts the device body.
The first elastic member is provided on the battery pack, and when in contact with the device body, biases the battery pack in the circumferential direction with the support portion as a fulcrum.
The second elastic member is provided on the battery pack, and when the battery pack is urged in the circumferential direction with the support portion as a fulcrum by the first elastic member, the second elastic member contacts the device body, The electric device according to claim 7, wherein the device body and the battery pack are positioned. The electric device according to any one of claims 7 to 10, wherein the support portion is disposed between the first elastic member and the second elastic member in the first predetermined direction. The device body has a device side terminal electrically connected to the load unit,
The battery pack has a battery side terminal electrically connected to the battery cell,
The device-side terminal is electrically connected to the battery-side terminal, with the second elastic member positioning the device body and the battery pack,
The electric device according to claim 11, wherein the device side terminal is movable relative to the device body. The load unit includes an electric motor that is rotated by the power of the battery pack,
A striking portion provided on the device body so as to be movable in a second predetermined direction, and moved by the power of the electric motor;
An ejection unit through which the striking unit moves;
A magazine for supplying a fastener to the ejection unit;
Is provided,
The electric device according to claim 11, wherein the striking unit moves in the second predetermined direction to strike the stopper of the ejection unit. The battery pack is
A case for housing the battery cell inside;
A substrate provided inside the case and supporting the battery side terminal;
A voltage detection member that detects the voltage of the battery cell and connects the battery cell and the substrate;
Have
The plurality of voltage detection members are arranged at intervals in the first predetermined direction,
The electric device according to claim 12, wherein the support portion is disposed between the voltage detection members in the first predetermined direction. The supporting portion is at least one of a first distance from the supporting portion to the first elastic member or a second distance from the supporting portion to the second elastic member in the first predetermined direction. The electric device according to claim 12, wherein a fourth distance from the supporting portion to the battery side terminal is also shortened.

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