JP2010167510A - Electric connection device of charging type electric tool - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electric connection device of a charging type electric tool considerably reducing workload of women or old people by arranging so that a heavy weight battery pack is separated from the charging type electric tool and stored in a portable bag or placed at a work place to be used through a cord of a connector. <P>SOLUTION: The electric connection device includes a pair of contact pieces 11 detachably contacted to a pair of power feeding terminals 51 of the charging type electric tool 50; an attachment 10 with a pair of protruding pieces 12 electrically connected to these contact pieces 11; a pair of contact pieces 21 contacted to a pair of power feeding terminals 41 of the battery pack 40; an attachment 20 with a socket mouth 200 electrically connected to these contact pieces 21; and the connector 30 electrically connecting the attachment 10 and the attachment 20 through the cord 33. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an electrical connection device for a rechargeable power tool that can be used separately in a rechargeable power tool in which a battery pack can be detachably mounted.

Conventionally, rechargeable power tools are cordless by detachably attaching battery packs such as lithium batteries, nickel-cadmium batteries, nickel-metal hydride batteries such as 36, 28.8, 25.2, 24, and 18 volts. There is an advantage that drilling, screwing, cutting and other operations can be performed, but on the other hand, a powerful battery is installed, so the weight is heavy. .
Therefore, the present inventor temporarily separated the battery pack from the power tool when precision work, ceiling work, work in a confined space, etc. is required despite the heavy battery weight and heavy arm force. Then, only the battery pack can be stored in a carrying bag, or placed on the work site so that various work can be done with the lighter power tool from the battery pack via the cord, succeeding in solving the above problems did.

JP 2006-351476 A

The present invention provides an electrical connection device for a rechargeable power tool that allows a heavy battery pack to be used separately from the rechargeable power tool body.
In addition, the present invention provides an electrical connection device for a rechargeable power tool that can greatly reduce the physical burden of the work of using a rechargeable power tool by a woman or an elderly person.
Furthermore, the present invention provides an electrical connection device for a rechargeable electric tool that is small, light, low in production cost, simple, easy and safe.

According to a first aspect of the present invention, there is provided a rechargeable electric tool that can be detachably mounted by moving the battery pack 40 up and down as shown in the figure. 50, a pair of contact pieces 11 that abut each of the pair of power supply terminals 51 in the electric power tool 50 and a pair of projecting pieces 12 that are electrically connected to the contact pieces 11 and project in a plug shape. A tool attachment 10 comprising a provided one, a pair of abutment pieces 21 that respectively abut against a pair of power supply terminals 41 of the battery pack 40, and a pair of abutment pieces that are electrically connected to each abutment piece 21 22 is a battery attachment 20 formed of an outlet port 200 formed by 22, a outlet port 300 by a pair of contact pieces 31 detachably inserted into a pair of protruding pieces 12 of the tool attachment 10, and a battery A plug 33 having a pair of plug-like protruding pieces 32 detachably inserted into the outlet port 200 of the attachment 20, and a cord 33 for electrically connecting the pair of abutting pieces 31 and the pair of protruding pieces 32; When the power tool 50 is operated, the battery pack 40 is placed on the work site or stored in a portable bag without directly attaching the battery pack 40 to the power tool 50. This is an electric connection device for a rechargeable electric tool that is capable of operating the electric power tool 50 via the connecting tool 30 and the tool attachment 10 inserted into the electric power tool 50 to the battery attachment 20 that is electrically connected to the power supply terminal 41. .
Moreover, in order to achieve the above-mentioned object, the invention according to claim 2 of the rechargeable electric tool of the present invention is a rechargeable battery that can be detachably mounted by sliding the battery pack 40B as shown in the figure. In the electric power tool 50B, a pair of abutting pieces 11B that abut each of the pair of power supply terminals 51B in the electric power tool 50B and a pair of protruding pieces 12B that are electrically connected to the abutting pieces 11B and protrude like a plug. , A locking portion 101B that can be slidably locked to the slide locking portion 501B of the electric tool 50B, and a screw that can fix the locking portion 101B to the slide locking portion 501B of the electric tool The tool attachment 10B including the portion 102B, the pair of contact pieces 21B that contact the pair of power supply terminals 41B of the battery pack 40B, and the electrical connection to each contact piece 21B A pair of contact pieces 22B formed with an outlet port 200B, a locking part 201B that can be slidably locked to a slide locking part 401B of the battery pack 40B, and a locking part 201B of the battery pack 40B. Outlet port formed by a battery attachment 20B including a screw portion 202B that can be fixed to the locking portion 401B, and a pair of contact pieces 31B that are detachably inserted into the pair of protruding pieces 12B of the tool attachment 10B. 300, a pair of plug-like protruding pieces 32 that are detachably inserted into the outlet port 200B of the battery attachment 20B, and a pair of contact pieces 31 and a pair of protruding pieces 32 are electrically connected. When the power tool 50B is operated by including the connecting tool 30 including the connecting cord 33, the battery pack 40B is directly attached to the power tool 50B. Without attachment, the tool attachment 10B inserted into the connector 30 and the electric tool 50B is connected to the battery attachment 20B electrically connected to the pair of power supply terminals 41B of the battery pack 40B placed on the work site or stored in the portable bag. It is the electric connection apparatus of the rechargeable electric tool which enabled it to operate | move the electric tool 50B via.
In the present invention, the slide locking portion of the electric power tool is formed at regular intervals such as the locking convex portion 20 shown in FIG. 5 of Japanese Patent Laid-Open No. 2008-132550, or Japanese Patent Laid-Open No. 2001-351492. As shown in FIG. 1 of the official gazette, there is one that is continuously formed, such as an overhang portion 6 of the guide rail 5.
In the present invention, the slide locking portion of the battery pack is formed at regular intervals, such as the locking groove portion 29 shown in FIG. 6 of Japanese Patent Laid-Open No. 2008-132550, or Japanese Patent Laid-Open No. 2001-351492. There are some which are continuously formed, such as the slide rail 18 of the publication.

  The product of the present invention separates a battery pack from a rechargeable electric tool, and stores the battery pack in a carrying bag that can be worn on a waist band or a shoulder band, or places it on a work site. Can be used as a power tool that greatly reduces the weight by simply connecting them to each other with a pair of attachments and connector cords, so it is easy to operate especially for precision work, ceiling work, work in confined spaces, etc. Above all, it has the advantage of greatly reducing the workload of female workers and elderly workers. In addition, the product of the present invention is easy to handle and has the advantages of being lightweight, small and inexpensive.

It is a perspective view of the attachment for tools of the example of the present invention. It is sectional drawing of FIGS. 1-1. It is a perspective view of the attachment for batteries of the example of the present invention. It is a bottom view of FIGS. It is sectional drawing of FIGS. It is the top view which notched and showed a part of connection tool of this invention Example. It is the whole explanatory view at the time of use of the example of the present invention. It is a front view of the attachment for tools of another example of the present invention. It is a right view of FIG. It is sectional drawing of FIGS. It is a perspective view of FIGS. It is a front view of the attachment for batteries of another example of the present invention. It is a right view of FIG. It is sectional drawing of FIGS. It is a perspective view of FIGS. It is a whole explanatory view at the time of use of another example of the present invention.

  Embodiments 1 and 2 of the present invention describe the best mode for carrying out the present invention.

An embodiment of the apparatus of the present invention is shown in FIGS.
The electrical connection device for a rechargeable electric tool according to an embodiment of the present invention includes a tool attachment 10, a battery attachment 20, and a connector 30.
The tool attachment 10 is a rod-shaped member that is detachably fitted into and attached to a recess 501 on the bottom surface of the rechargeable electric tool main body 50 so that the battery pack 40 can be moved up and down. The insertion portion 101 can be fitted in accordance with the shape, and a grip portion 102 that protrudes from the concave portion 501 and can be grasped by a hand. A pair of abutting pieces 11 that abut each of the power supply terminals 51 are provided, and a pair of projecting pieces 12 that are electrically connected to the abutting pieces 11 and project in a plug shape are provided at the rear end of the handle portion 102. Yes.
The tool attachment 10 is preferably made of rubber or synthetic resin, which is a rod-shaped electrical insulator, and is somewhat elastic and press-fit.
The battery attachment 20 is provided with a recess 201 that can be fitted in accordance with the shape of the electrode protrusion of the battery pack 40, and is brought into contact with a pair of power supply terminals 41 of the battery pack 40 when the recess 201 is inserted. A pair of contact pieces 21 are provided, and an outlet port 200 by a pair of plug-in type contact pieces 22 electrically connected to each contact piece 21 is provided at the top. The pair of contact pieces 21 is preferably an elastic metal plate as shown in FIG.
The battery attachment 20 is preferably made of rubber or synthetic resin, which is an electrical insulator provided with a recess 201, and is somewhat elastic and slightly press-fitted to the electrode protrusion of the battery pack 40.
The connection tool 30 is provided with an outlet port 300 formed by a pair of plug-in type contact pieces 31 that are detachably inserted into the pair of protruding pieces 12 of the tool attachment 10, and an outlet of the battery attachment 20. The plug 200 is provided with a pair of protruding pieces 32 that are detachably inserted into the mouth 200, and a cord 33 that electrically connects the pair of abutment pieces 31 and the pair of protruding pieces 32. .
Therefore, when the electric tool 50 is used separately from the battery pack 40, the battery attachment 20 is fitted to the battery pack 40 stored in a carrying bag or placed near the work site, and the tool attachment 10 is used. Is inserted into the electric power tool 50 and the battery pack 40 and the electric power tool 50 are electrically connected via the connection tool 30, the electric power tool 50 operates.

A second embodiment of the device of the present invention is shown in FIGS.
The electrical connection device for a rechargeable electric power tool according to an embodiment of the present invention includes a tool attachment 10B, a battery attachment 20B, and a connector 30.
The attachment 10B is detachably fitted between the pair of slide locking portions 501B and the top surface portion 502B at the bottom of the rechargeable electric power tool main body 50B so that the battery pack 40B can be detachably mounted by sliding. A pair of locking portions 101B that can be locked and a pair of outlet-shaped contact pieces 11B that are in contact with the pair of power supply terminals 51B at the bottom of the electric power tool 50B. A pair of projecting pieces 12B that are electrically connected to the respective contact pieces 11B and project in a plug shape are provided. In addition, the pair of locking portions 101B fitted into the pair of slide locking portions 501B of the electric power tool 50B by screwing the knob-attached screws 102B can be fixed so as not to move.
The battery attachment 20B is provided with a pair of contact pieces 21B that are in contact with a pair of power supply terminals 41B of the battery pack 40B, and a pair of plug-in plugs that are electrically connected to the contact pieces 21B. An outlet port 200B is provided by the contact piece 22B.
Also, a pair of locking pieces 201B are provided and fitted into a pair of slide locking portions 401B of the battery pack 40B that can be slidably locked to the pair of slide locking portions 501B of the electric power tool 50B. The locking portion 201B fitted into the slide locking portion 401B can be fixed so as not to move by screwing the screw portion 202B with a knob.
The connection tool 30 is the same as that of the first embodiment, and is provided with an outlet port 300 formed by a pair of plug-type contact pieces 31 that are detachably inserted into the pair of protruding pieces 12B of the tool attachment 10B. A plug-like one provided with a pair of protruding pieces 32 detachably inserted into the outlet port 200B of the battery attachment 20B, and a pair of abutting pieces 31 and a pair of protruding pieces 32 are electrically connected. It consists of a cord 33 to be connected.
Therefore, when the electric tool 50B is used separately from the battery pack 40B, the attachment 20B is inserted into the battery pack 40B stored in a carrying bag or placed near the work site, and the attachment 10 is attached to the electric tool 50. If the battery pack 40 and the electric tool 50B are electrically connected via the connection tool 30 by insertion, the electric tool 50B operates.

  The product of the present invention can be mass-produced with a small size, light weight and low cost.

DESCRIPTION OF SYMBOLS 10, 10B Tool attachment 101B Tool attachment latching part 102B Tool attachment screw part 11, 11B Tool attachment contact piece 12, 12B Tool attachment protrusion piece 20, 20B Battery attachment 200, 200B Battery Attaching outlet port for battery attachment 201B Locking portion for battery attachment 202B Screw portion for battery attachment 21, 21B Contact piece for battery attachment 22, 22B Contact piece for battery attachment 30 Connector
300 Outlet port of connection tool 31 Contact piece of connection tool 32 Projection piece of connection tool 33 Cord of connection tool 40, 40B Battery pack 401B Slide lock portion 41, 41B Battery pack power supply terminal 50, 50B Rechargeable Electric tool 501B Rechargeable electric tool slide locking portion 51, 51B Electric tool power supply terminal

Claims (2)

  In the rechargeable power tool 50 that can be detachably mounted by moving the battery pack 40 up and down, a pair of contact pieces 11 that contact the pair of power supply terminals 51 in the power tool 50 and the respective contact A tool attachment 10 including a pair of projecting pieces 12 that are electrically connected to the piece 11 and project in a plug shape, and a pair of abutting contacts respectively contacting a pair of power supply terminals 41 of the battery pack 40. A battery attachment 20 including a contact piece 21 and an outlet port 200 formed by a pair of contact pieces 22 electrically connected to the contact pieces 21 and a pair of projecting pieces 12 of the tool attachment 10 are provided. An outlet port 300 formed by a pair of contact pieces 31 that are detachably inserted and a pair of plug-like protruding pieces 32 that are detachably inserted into the outlet port 200 of the battery attachment 20 are provided. When the power tool 50 is operated, the battery pack 40 is connected to the power tool 50 when the power tool 50 is operated by including a connector 30 including a cord 33 that electrically connects the pair of contact pieces 31 and the pair of protruding pieces 32. For the tool inserted in the connector 30 and the electric tool 50 into the battery attachment 20 electrically connected to the pair of power supply terminals 41 of the battery pack 40 placed on the work site or housed in the portable bag An electric connection device for a rechargeable electric power tool, wherein the electric power tool 50 can be operated via the attachment 10.   In the rechargeable electric power tool 50B that can be detachably mounted by sliding the battery pack 40B, a pair of contact pieces 11B that contact with a pair of power supply terminals 51B in the electric tool 50B and the respective contact A pair of protruding pieces 12B that are electrically connected to the piece 11B and protrude like a plug, a locking portion 101B that can be slidably locked to the slide locking portion 501B of the electric tool 50B, The tool attachment 10B including the screw portion 102B that can fix the portion 101B to the slide locking portion 501B of the electric tool, and a pair of contact pieces 21B that contact the pair of power supply terminals 41B of the battery pack 40B, respectively. A pair of contact pieces 22B that are electrically connected to the contact pieces 21B, and a slide locking portion 4 of the battery pack 40B. A battery attachment 20B including a locking portion 201B that can be slidably locked to 1B, a screw portion 202B that can fix the locking portion 201B to the locking portion 401B of the battery pack 40B, and a tool attachment 10B. A pair of contact pieces 31B that are detachably inserted into the pair of projecting pieces 12B, and a pair of plug-like projecting pieces that are detachably inserted into the outlet port 200B of the battery attachment 20B. When the power tool 50B is operated, the battery pack 40B is provided with a connecting tool 30 including a cord 33 that electrically connects the pair of contact pieces 31 and the pair of protruding pieces 32. Without being directly attached to the electric power tool 50B, it is electrically connected to a pair of power supply terminals 41B of the battery pack 40B placed on the work site or stored in a portable bag. The battery attachment 20B, connector 30 and through the tool attachment 10B inserted into the power tool 50B, the electrical connecting device rechargeable power tool is characterized in that to be able to operate the power tool 50B.

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