JP2009039841A - Electrical connection device of charging type electric tool - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electrical connection device which allows a heavy battery pack to be stored in a portable bag or to be placed at a working site for use by separating it from a charging type electric tool, and drastically reduces a working burden of a woman and an elderly person in accordance with difficulty of work. <P>SOLUTION: This electrical connection device is furnished with: contact pieces 10 to make contact with an electrode piece 31 in a recessed part 300 to insert freely connectably and disconnectably an electrode protruded part 41 of the battery pack 40 of the charging type electric tool 30 in it; an attachment A1 for the electric tool provided with an electric wire cord 50 to electrically connect to each of the contact pieces 10; contact pieces 20 to make contact with an electrode piece 411 of the protruded part 41 of the battery pack 40; and an attachment B1 for the battery pack provided with the electric wire cord 50 to electrically connect to each of the contact pieces 20. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

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

Conventionally, rechargeable electric 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 inventors have found that, the battery weight is large, despite the large physical strength burden, if the precision work and ceiling work and such as is necessary work, such as the narrow-field plants, than temporarily electric power tool battery pack To solve the above problems by separating and storing only the battery pack in a carrying bag, or by placing it on the work site and allowing the power tool to be lightened from the battery pack through a cord. Successful.
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 power tool that is small and light and can be used easily at a low manufacturing cost.

The present invention invention of the rechargeable electric power tool of the electrical connection equipment according to claim 1, in order to achieve the above object, as illustrated, rechargeable power tool 30 for removably attaching the electrode projecting portion 41 of the battery pack 40 the contact piece 10 of the bottom pair respectively you contact the electrode pieces 31 of the pair of the recesses 300 of the shall be extended to the outside a wire cord 50 for electrically connecting each contact piece 10 the provided, the power tool attachment A1 were to be removably fitted in the recess 300 of the rechargeable power tool 30, respectively to the pair of electrode pieces 411 of the electrode protruding portions 41 of the battery pack 40 you abutment 1 the contact piece 20 of the pair, and shall be extended to the outside a respective contact piece 20 and the electric wire cord 50 for electrically connecting is provided, to allow fitted detachably to the electrode protrusion 41 of the battery pack 40 The battery pack attachment B1 For example, when operating the rechargeable electric power tool 30, without attaching the battery pack 40 to the rechargeable power tool 30, housed in carrying bag 70, or, the electrode projection of the battery pack 40 to allow placing the work site An electric connection device for a rechargeable electric tool in which the attachment A1 is inserted into the recess 300 of the rechargeable electric tool 30 from the attachment B1 externally fitted to the portion 41 via the electric wire cord 50 , and the rechargeable electric tool 30 can be operated. is there.

In the present invention, the battery pack is separated from the rechargeable electric tool, and the battery pack is stored in a carrying bag that can be worn on a waist band or a shoulder, or placed on a work site, and the battery pack and the electric tool are lightened. By simply connecting with a pair of attachments and wiring, it can be used as a light-weight power tool , so it is easy to operate, especially for precision work, ceiling work, work in confined spaces, etc. There is a strong point that can greatly reduce the work burden of the staff. In addition, the product of the present invention is easy to handle and has the advantages of being lightweight, small and inexpensive.

The best mode for carrying out the invention The present invention example was described.

An embodiment of the apparatus of the present invention is shown in FIGS.
The electrical connection device for a rechargeable power tool according to an embodiment of the present invention includes a power tool attachment A1 and a battery pack attachment B1.
Power tool attachment A1 is rechargeable power tool intended for mounting detachably fitted to the recess 300 of the bottom surface of the main body 30, the contact piece of the pair abutting each electrode pieces 31 of the pair of the recess 300 10 and an electric wire cord 50 electrically connected to each contact piece 10 and extending to the outside.
The main body A11 of the attachment A1 is preferably made of rubber or synthetic resin, which is a rod-like electrical insulator, and is somewhat elastic and press-fit.
The battery pack attachment B1 is composed of a pair of contact pieces 20 that are in contact with the pair of electrode pieces 411 of the electrode protrusion 41 of the battery pack 40, and an electric wire cord 50 that is electrically connected to each contact piece 20. There are some that extend outside. The pair of contact pieces 20 is preferably an elastic metal plate as shown in FIG.
The main body B11 of the attachment B1 is preferably made of rubber or synthetic resin, which is a concave electrical insulator, and is somewhat elastic and press-fitted.
The power cord 50 is connected to the attachment A1 and is also connected to the attachment B1.
The carrying bag 70 includes a belt passing portion 71 of the belt 80 and a storage portion 72 of the battery pack 40. The storage portion 72 stores the battery pack 40 and opens / closes with a snap 722, and the wire cord 50 of the attachment B1 that can be externally fitted to the electrode convex portion 41 of the stored battery pack 40 crosses the opening / closing piece 721. It is preferable to provide a fastener 723 that can be pulled out .
When the electric tool 30 is not used, the electric wire cords 50 respectively connected to the attachment A1 and the attachment B1 are removed from the concave portion 300 of the electric tool 30 and the electrode convex portion 41 of the battery pack 40 and stored in the carrying bag 70. To be carried.
When using the electric tool 30, while housed in the portable bag 70, or, by either placing the work site near country battery pack 40, and connects the attachment B1 to the electrode protrusion 41 of the battery pack 40, carrying If the attachment A1 is inserted into the recess 300 of the electric power tool 30 from the bag 70 via the power cord 50 , the electric power tool 30 can be used with the battery pack 40 separated.

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

It is explanatory drawing of attachment A1 of an Example of this invention. It is XX sectional drawing of FIG. 1-1. It is explanatory drawing of attachment B1 of an Example of this invention. It is the YY sectional view taken on the line of FIG. It is explanatory drawing of the carrying bag of an Example of this invention. It is explanatory drawing at the time of use of an Example of this invention.

Explanation of symbols

A1 Attachment for electric tool 10 Contact piece for attachment for electric tool B1 Attachment piece for battery pack 20 Contact piece for attachment for battery pack 50 Electric wire cord
DESCRIPTION OF SYMBOLS 30 Rechargeable electric tool 70 Carrying bag 300 Concave part of bottom face of rechargeable electric tool 31 Electrode piece of concave part of bottom face of rechargeable electric tool 40 Battery pack 41 Electrode convex part of battery pack 411 Electrode piece of electrode convex part of battery pack

Claims (1)

A pair of abutment pieces 10 that abut on a pair of electrode pieces 31 in a recess 300 on the bottom surface of the rechargeable electric tool 30 into which the projection 41 of the battery pack 40 is detachably inserted, and each abutment piece The electric power cord attachment A1 that is electrically connected to the electric wire 10 and that extends to the outside so as to be detachably fitted in the recess 300 of the rechargeable electric power tool 30, and the battery pack 40 A pair of abutting pieces 20 respectively abutted on a pair of electrode pieces 411 of the convex portion 41 and a wire cord 50 electrically connected to each abutting piece 20 and extending to the outside are provided. The battery pack attachment B1 that can be detachably fitted to the convex portion 41, and when operating the rechargeable power tool 30, the battery pack 40 is not attached to the rechargeable power tool 30, and the work site Placed on or The rechargeable power tool 30 is inserted into the recess 300 of the rechargeable power tool 30 through the wire cord 50 and the attachment A1 from the attachment B1 that is externally fitted to the convex portion 41 of the battery pack 40 that can be stored in the row bag 70. An electrical connection device characterized by being operable.

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