JP2014050922A - Rechargeable electrical equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable a drive part and the like with a motor to be assembled even to a cylindrical housing that does not employ a half-split structure, and to improve connection reliability of electrical wiring, for example, between the motor and a battery pack.SOLUTION: A housing 21 of rechargeable electrical equipment relating to the present invention is formed in a cylindrical shape in which openings 22f, 22b and 26 are provided in three locations. A drive part can be assembled by utilizing the one or two openings 22f and 22b among the three openings 22f, 22b and 26 of the housing 21. A battery pack is inserted and connected to the remaining opening 26 in the one location.

Description

  According to the present invention, a drive unit including a motor and a switch are housed in a housing, and the electric device is configured to start the motor by operating the switch from outside the housing and rotate the output shaft of the drive unit. The present invention relates to a rechargeable electric device including a main body and a battery pack connected to the housing as a power source of the electric device main body.

A conventional rechargeable electric device relating to this is described in Patent Document 1.
The rechargeable electric device in Patent Document 1 is a portable electric tool, and includes a substantially L-shaped tool housing including a cylindrical housing body and a grip. And the drive part provided with a motor is inserted from the front-end | tip opening of a housing main-body part, and it is assembled | attached to the housing main-body part. Further, the motor driving switch and the battery pack are accommodated from the base end opening of the grip portion. Here, in the process of inserting the motor driving switch and the battery pack from the base end opening of the grip portion, the terminals of the switch and the battery pack are connected to the motor terminals of the housing main body. .
In this way, the tool housing (housing main body part, grip part) does not have a left / right halved structure, and the driving part and the battery pack holding part provided with the motor even if the tool housing is a complete cylindrical body without a mating surface in the circumferential direction. Etc. can be assembled.

US Patent Application Publication No. 2006/0202571

  However, the above-described tool housing is configured such that the switch, the battery pack terminal, and the motor terminal are connected inside the boundary position between the housing main body and the grip part. For this reason, the connection state of both terminals cannot be visually confirmed. Therefore, even if a contact failure occurs due to deformation of the switch, battery pack terminal, or motor terminal during the assembly process, it may not be noticed.

  The present invention has been made to solve the above-described problems, and the problem to be solved by the present invention is to assemble a drive unit or the like having a motor even if it is a cylindrical housing instead of a halved structure. It is possible to improve the connection reliability of the electrical wiring between the motor and the battery pack.

The above-described problems are solved by the inventions of the claims.
According to the first aspect of the present invention, a drive unit including a motor and a switch are housed in a housing, and the switch is operated from outside the housing to start the motor and rotate the output shaft of the drive unit. And a battery pack connected to the housing as a power source for the electric device main body. The housing is formed in a cylindrical shape having openings at three locations. The drive unit can be assembled using one or two of the three openings of the housing, and the battery pack is inserted and connected to the remaining one of the openings. It is characterized by being.

According to the present invention, the housing is formed in a cylindrical shape having openings at three locations, and the drive unit can be assembled using one or two of the openings, and the remaining one location. The battery pack is inserted and connected to the opening.
For this reason, it is possible to assemble a drive unit including a motor, a battery pack, or the like even if the housing is not a half-divided structure and is a complete cylindrical body having no mating surface in the circumferential direction.
Furthermore, since the housing is provided with three openings, one opening can be arranged between the motor and the battery pack. For this reason, it becomes possible to visually check the wiring state between the motor and the battery pack using the opening between the motor and the battery pack, and the connection reliability of the electric wiring is improved.

According to the second aspect of the present invention, the housing has a cylindrical housing main body having openings on both sides in the axial direction, and an opening is formed at the protruding end by projecting radially outward from the outer peripheral surface of the housing main body. And a cylindrical grip portion, and the drive portion is assembled to the housing main body portion.
According to the invention of claim 3, the switch is assembled from the opening of the grip portion.

According to the invention of claim 4, it is configured such that wiring between the motor of the drive unit and the battery pack is possible using an opening at one location of the housing.
For this reason, wiring becomes possible while visually confirming using the opening, and the connection reliability of the electrical wiring is improved. Furthermore, the repair of the wiring becomes easy.

According to invention of Claim 5, it is comprised so that an opening part may be sealed in a watertight state with a sealing material.
For this reason, the waterproof property of a rechargeable electric apparatus is ensured.

  According to the present invention, it is possible to assemble a drive unit including a motor even if the housing is not a half structure and is a complete cylindrical body having no mating surface in the circumferential direction. In addition, the connection reliability of the electrical wiring is improved.

1 is an overall perspective view of an electric driver according to Embodiment 1 of the present invention. They are the longitudinal cross-sectional view (A figure) of the said electric driver, the BB arrow sectional drawing (B figure) of A figure, and CC sectional view (C figure) of A figure. They are a plane sectional view (A figure) of the housing main-body part of the said electric driver, BB arrow sectional drawing (B figure) of A figure, CC sectional view (C figure) of A figure. It is a longitudinal cross-sectional view of the housing main-body part and grip part of the said electric driver. It is a longitudinal cross-sectional view showing the assembly | attachment procedure of the said electric driver. It is a longitudinal cross-sectional view showing the assembly | attachment procedure of the said electric driver.

[Embodiment 1]
Hereinafter, a rechargeable electric apparatus according to Embodiment 1 of the present invention will be described with reference to FIGS. The rechargeable electric device according to the present embodiment is a rechargeable electric driver 10.
Here, front and rear, right and left, and up and down in the figure correspond to front and rear, right and left and up and down in the electric driver 10.

<About the outline of the electric driver 10>
The electric driver 10 is a handy type electric tool used for screw tightening or the like, and includes a driver main body 20, a battery pack 30, and a waterproof cover 40.
As shown in FIGS. 1 and 2, the housing 21 of the driver main body 20 has a side surface from a cylindrical housing main body portion 22 and a cylindrical grip portion 24 that protrudes downward from the lower end surface of the housing main body portion 22. It is formed in a substantially T shape.
As shown in FIGS. 2 and 3A, the housing main body 22 of the housing 21 includes a motor 51 that is a drive source of the electric driver 10, a gear mechanism 52 for reduction, and a clutch mechanism 53 for torque adjustment. Is housed so as to be substantially coaxial with the housing body 22. A torque adjustment ring 53r of the clutch mechanism 53 protrudes in the axial direction from the front end opening 22f (see FIG. 4 and the like) of the housing main body 22. Further, the output shaft 55 of the clutch mechanism 53 protrudes in the axial direction from the center position of the torque adjustment ring 53r. A chuck 27 for gripping a tip tool such as a driver bit is provided at the tip of the output shaft 55.
In addition, the rear end opening 22 b (see FIG. 4 and the like) of the housing body 22 is closed by the cap-shaped housing 23.

The grip portion 24 of the housing 21 is a portion that the user grips when using the electric driver 10, and as shown in FIGS. 1 and 2, the housing main body portion 22 side (upper side) is thin and the protruding end side ( The lower side is gradually thickened. A surface operation unit 25f of the trigger type shift switch 25 is provided near the boundary position with the housing main body 22 on the upper front side of the grip unit 24. The surface operation portion 25f is formed, for example, in a rubber sheet shape, and is configured to close the opening 24x (see FIG. 4) of the grip portion 24 in a watertight state. Then, by pressing the projection of the surface operation portion 25f, the back surface of the surface operation portion 25f protrudes from the opening 24x of the grip portion 24 to the inside of the grip portion 24.
As shown in FIG. 2 and the like, the switch body 25m of the shift switch 25 and the battery pack 30 are housed inside the grip 24.
The switch main body 25m of the transmission switch 25 includes a lever-like movable portion 25r, and is configured to operate when the lever-like movable portion 25r is pressed. Then, with the switch body 25m positioned at a predetermined position inside the grip 24, the lever-like movable part 25r is positioned at a position to receive the pressing force of the surface operation part 25f.

A battery pack insertion portion 26 into which the battery pack 30 is inserted is formed inside the grip portion 24 as shown in FIGS. An engaged portion 26k (see FIG. 6) is formed at a predetermined position on the inner wall surface of the battery pack insertion portion 26 so that the engagement claw 35 of the battery pack 30 can be engaged.
The battery pack 30 is a power source for the driver main body 20, and as shown in FIG. 6, the insertion portion 32 inserted into the battery pack insertion portion 26 of the grip portion 24 and the battery pack insertion portion 26 of the grip portion 24. And a decorative lid 34 that closes the opening. The decorative lid portion 34 is provided with an engaging claw 35 that engages with an engaged portion 26k of the battery pack insertion portion 26 with an elastic force in a state where the insertion portion 32 is inserted into the battery pack insertion portion 26. Yes. Further, the decorative lid portion 34 has a connection release operation portion (not shown) that can release the engagement state of the engagement claw 35 and the engaged portion 26k of the battery pack insertion portion 26 against an elastic force. Is provided.
In addition, the grip portion 24 of the housing 21 is covered with a cap-shaped waterproof cover 40 from below in a state where the battery pack 30 is inserted into the battery pack insertion portion 26.
That is, the driver main body 20 corresponds to the electric device main body of the present invention, and the motor 51, the gear mechanism 52, the clutch mechanism 53, and the like correspond to the drive unit of the present invention.

<About the waterproof structure of the housing 21 of the driver main body 20>
Next, the waterproof structure of the housing 21 will be described.
The housing main body portion 22 and the grip portion 24 of the housing 21 are cylindrical bodies having no mating surfaces in the circumferential direction, and the housing main body portion 22 and the grip portion 24 are integrally formed as shown in FIG. ing. A bearing that supports a large-diameter base portion 53z (see FIG. 5) of the torque adjustment ring 53r of the clutch mechanism 53 that protrudes forward from the distal end opening 22f is rotatably supported around the shaft center at the distal end portion of the housing main body portion 22. A portion 22j is formed. As shown in FIGS. 2, 3, etc., a ring-shaped first seal material 61 is fitted between the base end large-diameter portion 53 z of the torque adjustment ring 53 r and the bearing portion 22 j of the housing main body 22. Thereby, the sealing performance between the housing main body 22 and the torque adjustment ring 53r of the clutch mechanism 53 is ensured.

  Further, as shown in FIG. 5 and the like, the cap-shaped housing 23 that closes the rear end opening 22b of the housing body 22 has a cylindrical protrusion 23e formed on the periphery of the opening. A ring-shaped step 23d is formed on the radially outer side. A ring-shaped second sealing material 62 is attached to a groove portion (not shown) formed on the outer peripheral surface of the cylindrical protrusion 23e and extending in the circumferential direction. As a result, the cylindrical seal 23 e of the cap-shaped housing 23 is fitted into the rear end opening 22 b of the housing main body 22, so that the second sealing material 62 is sandwiched between the housing main body 22 and the cap-shaped housing 23. Thus, the sealing property between the two 22 and 23 is ensured. Here, as shown in FIG. 1, the cap-shaped housing 23 is fixed to the housing body 22 by being screwed to the housing body 22 at a plurality of locations in the circumferential direction.

Further, as shown in FIG. 4, a flange portion 24f is formed on the lower outer peripheral surface of the grip portion 24 of the housing 21, and a ring-shaped third portion surrounds the grip portion 24 below the flange portion 24f. A sealing material 63 is attached. For this reason, the cap-shaped waterproof cover 40 is put on the grip portion 24 from below, and as shown in FIGS. 1 and 2, the opening peripheral edge of the waterproof cover 40 has a ring-shaped third sealing material 63. It can be adapted to the lower surface of the flange portion 24f of the grip portion 24 via.
Here, the waterproof cover 40 may be fixed to the grip part 24 with a plurality of screws, or may be fixed to the grip part 24 by screwing a male screw and a female screw. Thereby, the sealing performance between the grip part 24 and the waterproof cover 40 is ensured.

<Assembly of motor 51, gear mechanism 52, and clutch mechanism 53>
Next, assembly of the motor 51, the gear mechanism 52, and the clutch mechanism 53 to the housing main body 22 will be described.
The motor 51, the gear mechanism 52, and the clutch mechanism 53 are axially connected to each other as shown in FIG. Here, at the boundary position between the motor 51 and the gear mechanism 52, as shown in FIGS. 3A and 3B, a disk-shaped positioning plate 57 is mounted, and the gear mechanism 52, the clutch mechanism 53, As shown in FIGS. 3A and 3C, a positioning fixing plate 58 is mounted in the vicinity of the boundary position.

The positioning plate 57 is a plate material that positions the motor 51 and the gear mechanism 52 and the like so as not to rotate relative to the housing main body 22. As shown in FIG. 3C, the motor housing is coaxial with the motor 51. It is fixed to. A pair of square grooves 57m are formed on both sides in the radial direction on the peripheral edge of the positioning plate 57, and the guide protrusions 22t of the housing body 22 are fitted into these square grooves 57m. Here, the guide protrusion 22t is formed so as to extend in the axial direction on the inner peripheral surface of the housing body 22. For this reason, the positioning plate 57 is allowed to move in the axial direction in a state where relative rotation with respect to the housing body 22 is prohibited.
Further, the outer peripheral surface of the positioning plate 57 is pressed from the outside in the radial direction by a plurality of pressing ridges 22p formed on the inner peripheral surface of the housing main body 22 as shown in FIG. Here, the plurality of pressing protrusions 22 p are formed to extend in the axial direction on the inner peripheral surface of the housing body 22. Thus, the positioning plate 57 is prohibited from moving in the radial direction while being allowed to move in the axial direction.

  The positioning fixing plate 58 positions the gear mechanism 52 and the clutch mechanism 53 relative to the housing main body 22 so as not to rotate relative to each other, and the motor 51, the gear mechanism 52, and the clutch mechanism 53 are pivoted with respect to the housing main body 22. It is a board | plate material for fixing to a direction predetermined position. The positioning fixing plate 58 includes a positioning portion 58e having a square groove 58m into which the guide protrusion 22t of the housing main body portion 22 is fitted, and a fixing portion 58z screwed to a predetermined position of the housing main body portion 22. ing. Further, the positioning fixing plate 58 is fixed to the non-rotating portion of the gear mechanism 52 and the clutch mechanism 53 in a state of being coaxial with the gear mechanism 52 and the clutch mechanism 53.

  When the motor 51, the gear mechanism 52, and the clutch mechanism 53 configured as described above are assembled to the housing body 22, first, as shown in FIG. 5, the motor 51, the positioning plate 57, the gear mechanism 52, the positioning The fixing plate 58 and the clutch mechanism 53 are integrated in the axial direction. Next, the clutch mechanism 53, the positioning fixing plate 58, the gear mechanism 52, the positioning plate 57, the motor 51 (hereinafter referred to as the motor 51, etc.) from the rear end opening portion 22b of the housing main body 22 with the output shaft 55 of the clutch mechanism 53 facing forward. Insert). Then, in a state in which the square groove 58m of the positioning fixing plate 58 is fitted to the guide protrusion 22t of the housing main body 22, and the square groove 57m of the positioning plate 57 is fitted to the guide protrusion 22t of the housing main body 22. The motor 51 and the like are moved forward with respect to the housing main body 22.

Thus, when the motor 51 and the like are inserted to the front end position, the output shaft 55 and the torque adjustment ring 53r of the clutch mechanism 53 protrude from the front end opening 22f of the housing body 22, and the base end of the torque adjustment ring 53r is large. The diameter portion 53z is fitted into the bearing portion 22j of the housing main body portion 22 via the first seal material 61. In this state, as shown in FIG. 3C, the left and right screw holes provided in the fixing portion 58 z of the positioning fixing plate 58 such as the motor 51 coincide with the left and right screw holes of the housing body 22. . For this reason, by fixing the fixing portion 58z of the positioning fixing plate 58 to the housing main body 22 with the screw N, the assembly of the motor 51 and the like to the housing main body 22 is completed.
Next, as shown in FIG. 3A and the like, the chuck 27 is connected to the output shaft 55 of the clutch mechanism 53.

<Assembly of switch body 25m>
Next, the assembly of the switch body 25m to the grip 24 will be described.
As shown in FIG. 5, the switch body 25m is attached to a switch support member 25y having a substantially square side surface. As shown in FIG. 2C, the lower end portion of the switch support member 25y is formed in a substantially rhombus shape, and positioning arc projections 25e are formed on both the left and right sides. The left and right arc projections 25e of the switch support member 25y are fitted in the left and right guide grooves 26m inside the grip portion 24. Here, the left and right guide grooves 26m are formed to extend in the vertical direction on the inner wall surface located above the battery pack insertion portion 26 of the grip portion 24.

  When the switch body portion 25m is assembled to the grip portion 24, the switch support member 25y is used with the battery pack insertion portion 26 of the grip portion 24 with the switch body portion 25m attached to the switch support member 25y. It is inserted into the inside upper part of the grip part 24. At this time, as shown in FIG. 2C, the left and right arc projections 25e of the switch support member 25y are fitted into the left and right guide grooves 26m of the grip portion 24, respectively. Thereby, the rotation of the switch support member 25y about the axis with respect to the grip portion 24 is prohibited. Then, by pushing the switch support member 25y upward from this state, the switch body 25m is positioned at a predetermined position, and as shown in FIGS. 2A and 2B, the lever movable portion 25r of the switch body 25m. Is held at a position to receive the pressing force of the surface operation portion 25f. Next, the switch support member 25y is fixed to the grip portion 24 with, for example, a screw or the like, whereby the assembly of the switch support member 25y is completed.

In this way, when the assembly of the motor 51, the gear mechanism 52, and the clutch mechanism 53 to the housing body 22 is completed, and the assembly of the switch body 25m to the grip 24 is completed, the rear end opening of the housing body 22 is completed. Wiring between the motor 51, the switch main body 25m, and the battery pack 30 is performed using the part 22b. Then, when the wiring is completed, the rear end opening 22 b of the housing body 22 is closed by the cap-shaped housing 23.
That is, the front end opening 22f and the rear end opening 22b of the housing main body 22 correspond to the openings on both sides in the axial direction of the housing in the present invention. Moreover, the opening part of the battery pack insertion part 26 of the grip part 24 corresponds to the opening part of the grip part in the present invention.

<Advantages of Rechargeable Electric Driver 10 According to this Embodiment>
According to the rechargeable electric driver 10 according to the present embodiment, the drive unit including the motor 51, the gear mechanism 52, and the clutch mechanism 53 from the rear end opening 22 b (opening in the middle of the housing) of the housing main body 22. Can be assembled. Further, the battery pack insertion portion 26 of the grip portion 24 can be used to assemble the switch body portion 25m and to insert and connect the battery pack 30.
Thus, even if the housing 21 (housing main body portion 22 and grip portion 24) is not a left-right halved structure and is a complete cylindrical body having no mating surface in the circumferential direction, the assembly of the motor 51 and the battery The pack 30 can be inserted and connected.
Furthermore, since the rear end opening 22b of the housing main body 22 is provided, it is possible to visually check the wiring state between the motor 51, the switch main body 25m, and the battery pack 30 using the rear end opening 22b. Thus, the connection reliability of the electrical wiring is improved.
In addition, the rear end opening 22b of the housing main body 22 is configured to allow wiring between the motor 51, the switch main body 25m, and the battery pack 30. For this reason, wiring is possible while visually confirming using the rear end opening 22b of the housing body 22, and the connection reliability of the electrical wiring is improved. Furthermore, the repair of the wiring becomes easy.
Further, the front end opening 22f, the rear end opening 22b of the housing main body 22 and the lower end opening 24h of the grip part 24 are watertight by the first seal material 61, the second seal material 62, and the third seal material 63. Therefore, the waterproof property of the rechargeable electric driver 10 is ensured.

<Example of change>
Here, the present invention is not limited to the above-described embodiment, and can be modified without departing from the gist of the present invention. For example, in the present embodiment, an example in which a drive unit such as the clutch mechanism 53, the gear mechanism 52, and the motor 51 is inserted from the rear end opening 22b of the housing main body 22 and assembled to the housing main body 22 is shown. . However, it is also possible to change the tip structure of the housing main body 22 and insert the motor 51, gear mechanism 52, and clutch mechanism 53 from the tip opening 22 f so as to be assembled to the housing main body 22.
Further, in the present embodiment, the driver main body 20 having a configuration in which the output shaft 55 of the clutch mechanism 53 constituting the driving portion protrudes from the front end opening 22f of the housing main body 22 is exemplified. However, it is also possible to apply the present invention to a driver main body or the like having a configuration in which the output shaft 55 of the clutch mechanism 53 does not protrude from the tip opening 22f of the housing main body 22.
Moreover, in this embodiment, the rechargeable electric driver 10 was illustrated as an example of the rechargeable electric device. However, it is also possible to apply the present invention to a mowing machine, a mowing machine, etc. in addition to an electric tool as a rechargeable electric device. Further, by attaching a brush-like rotating body or a sponge-like rotating body to the chuck 27 in the driver main body 20 of the electric driver 10, the driver main body 20 can be used as a drive unit for the polisher.

10 .... Electric screwdriver (electric equipment)
20 ... Driver body (electric equipment body)
21... Housing 22... Housing main body 22 f... Opening end 22 b .. Rear opening 24... Grip 24 h. 25m ... Switch body (switch)
25 .... Shift switch 25f ... Surface operation unit 26 ... Battery pack insertion unit 30 ... Battery pack 51 ... Motor (drive unit)
52... Gear mechanism (drive unit)
53... Clutch mechanism (drive unit)
55... Output shaft (drive unit)
61... First sealing material 62... Second sealing material 63.

Claims (5)

A drive unit including a motor and a switch are housed in a housing, the electric device main body configured to start the motor by operating the switch from outside the housing and rotate the output shaft of the drive unit, and A rechargeable electric device provided with a battery pack connected to the housing as a power source of the electric device body,
The housing is formed in a cylindrical shape having openings at three locations,
The drive unit can be assembled using one or two of the three openings of the housing, and the battery pack is inserted and connected to the remaining one of the openings. Rechargeable electrical equipment characterized by that. A rechargeable electric device according to claim 1,
The housing includes a cylindrical housing main body having openings on both sides in the axial direction, and a cylindrical grip having an opening at the protruding end that protrudes radially outward from the outer peripheral surface of the housing main body. Department and
The rechargeable electric device, wherein the drive unit is assembled to the housing body. A rechargeable electric device according to claim 2,
A rechargeable electric device characterized in that the switch is assembled from an opening of the grip portion. A rechargeable electric device according to any one of claims 1 to 3,
The rechargeable electric device is configured such that wiring between the motor of the driving unit and the battery pack is possible using an opening at one location of the housing. The rechargeable electric device according to any one of claims 1 to 4,
A rechargeable electric device, wherein the opening is configured to be sealed in a watertight state by a sealing material.

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