JPH0230228Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a portable power tool, and more particularly to a portable power tool having a substantially pistol shape.

(Conventional technology and its problems) In recent years, portable power tools have become increasingly computerized, and the speed and torque control of power tools is often performed.In this case, control electronic components, batteries, etc. For convenience, it is built into the handle. However, for example, the handle part provided on a driver drill is relatively long and weighs less than the main body, so when carrying it in a car, the handle part may jolt due to the vibrations of the car, causing vibrations on electronic parts, batteries, etc. There was a problem that the product could be exposed to shock or impact, which could cause it to malfunction.

The present invention was made to solve the above-mentioned conventional problems, and an object of the present invention is to provide a portable power tool that can cushion and protect the built-in parts of the handle portion.

(Means for Solving the Problems) In order to solve the above-mentioned technical problems, the present invention consists of a drive section that extends horizontally and a handle section that extends almost vertically from the drive section and is capable of storing a battery. The portable power tool is formed in the shape of a pistol, and has an elastic mounting piece that protrudes upwardly from both sides of the lid body made of a spring member attached to the lower end of the handle part to the side of the handle part. The portable power tool is integrally molded and further includes a buffer member made of an elastic body attached to the mounting piece.

(Function) With the above configuration, the present invention functions to buffer and protect the interior parts of the handle portion by the spring effect of the buffer member and the mounting piece.

(Embodiment) Next, an embodiment of the present invention will be described with reference to the drawings. In the figure, 1 is the entire main body of a portable power tool, such as a screwdriver drill, and includes a motor and a drive device (not shown). It is composed of a drive part 2 which has a built-in battery, and a handle part 3 which has a built-in battery 4.

Reference numeral 4 refers to the above-mentioned battery, which can be charged by connecting a plurality of unit cells 5 (in this example, eight units are illustrated), and the unit cells 5 are integrally wrapped with an insulating material or the like. An electrode terminal plate 6, a thermo-terminal plate 7, and a thermostat 8 are attached to the upper end side in the figure to constitute the battery 4. Further, as shown in FIG. 4, this unit cell 5 has a substantially dogleg-shaped lead plate 11 fixed to the terminal 9 by spot welding or the like between the (+) electrode terminal 9 and the battery internal element 10. Since the lead plate 11 is mounted on the lead plate 11 when vibration or impact is applied to the handle part 3,
There were cases where the welds came off and the wire broke, causing the battery 4 to lose its function. Note that 12 is an insulating member and 13 is a vibration isolating member.

Hereinafter, the main parts for preventing disconnection of the battery 4 in this embodiment will be explained. This handle part 3 is formed to have a substantially hollow elliptical cross section to enable gripping, a battery 4 is housed in the hollow part, and a lid body 1 is provided at the lower end of the handle part 3 to cover the hollow part.
4 is installed.

Reference numeral 14 denotes the above-mentioned lid body, which is made of, for example, a spring steel material, and is mainly composed of a roughly elliptical lid plate 15 capable of shielding the hollow part of the handle part 3, and has a tip at one end on its long diameter side. a mounting piece 16 having an annular portion 17 and pivotally attached to the handle portion 3 via a pin 23;
is formed in an upwardly rising shape, and an engagement piece 18 that elastically engages with a locking pin 24 attached to the handle 3 is formed at the other end of the long diameter and corresponds to the mounting piece 16 in a bent shape as shown in the figure. It is formed in a rising shape. Further, on both sides of the short diameter side of the cover plate 15, mounting pieces 19 for attaching a buffer body 20 in the shape of a mountain as shown in the figure are provided oppositely, and the buffer body 20 is attached to the mounting pieces 19. Note that the mounting piece 19 is given elasticity.

Reference numeral 20 denotes the above-mentioned buffer body, which is formed into a cup shape having a predetermined diameter from, for example, elastic rubber, and is riveted 22 to each mounting piece 19 via cup washers 21. .

In the lid body 14 with the buffer body 20 attached in this way, its mounting piece 16 is pivotally attached to the pin 23 of the handle part 3 via the annular part 17, and its locking piece 18 is attached to the locking pin 24 of the handle part 3. When locked and shielding the hollow part, the mounting pieces 19 to which the buffer body 20 is attached are located on both sides of the short diameter side of the lower end of the handle part 3, and the buffer body 2
0 is supported in a protruding manner as shown.

Now, the portable power tool 1 of this example is formed into a substantially pistol shape by a drive part 2 extending horizontally and a handle part 3 extending almost vertically from the drive part 2 and capable of storing a battery 4. Attachment pieces 19 having elasticity that protrude upwardly from both sides of the lid body 14 made of a spring member attached to the lower end of the handle part 3 toward the sides of the handle part 3 are integrally molded, and further, A buffer member 20 made of an elastic body is attached to this mounting piece 19. Therefore, when handling the power tool 1 and placing it on a workbench or the like, place the drive part 2 on the table and release the handle part 3.
A shock absorber 20 made of an elastic material such as rubber is attached to both sides of the lower end of the handle part 3 so as to protrude sideways through an elastic mounting piece 19 even when the handle part 3 is tilted on the table. Therefore, the impact force due to the tilting is buffered by the buffer body 20, and the degree of buffering can be significantly increased due to the synergistic effect with the spring effect due to the elasticity of the locking piece 19. Vibration and impact force exerted on the battery 4 are significantly reduced, thereby preventing the lead plate 11 from coming off and causing a failure. Also, when the handle part 3 trembles due to running vibrations during transportation by car etc., the shock absorber 2
0 and the mounting piece 19, the battery 4
Vibration and vibration can be significantly reduced and protected. Further, since the buffer body 20 is configured to be attached to the mounting piece 19 of the lid body 14, it can be easily and reliably attached, and the battery 4
When replacing the cover body 14, it is rotated together with the opening/closing operation of the cover body 14, so there is no interference with battery insertion, etc.

In the above embodiment, the shock absorber 20 is formed into a cup shape, but the present invention is not limited to this. For example, it may be shaped like a truncated cone with a hole in the center. Any structural shape that can be used may be used. Further, although the battery 4 is built-in in the above embodiment, it is possible to significantly reduce vibrations and shocks applied to control electronic components as well.

(Effects of the invention) The present invention is a portable power tool that is formed into an approximately pistol shape with a drive part that extends horizontally and a handle part that extends almost vertically from the drive part and is capable of storing a battery. Attachment pieces having elasticity that protrude upwardly from both sides of the lid body made of a spring member attached to the lower end of the handle part to the sides of the handle part are integrally molded, and
Furthermore, by attaching a buffer member made of an elastic material to this mounting piece, even if the handle part is tilted onto the table when handling the power tool,
The impact force caused by tilting is buffered by the shock absorber, and the synergistic effect with the spring effect of the elasticity of the locking piece of the lid body makes it possible to significantly increase the degree of shock absorption. The vibration and impact force exerted on the battery are significantly reduced, thereby protecting it and preventing the occurrence of failure. Furthermore, even if the handle part 3 stumbles due to running vibrations during transportation by car, etc., it is similarly buffered by the shock absorber and mounting piece, and the vibrations on the electronic components and battery can be significantly reduced and protected. . In addition, since the shock absorber is configured to be attached to the mounting piece of the lid, it can be easily and securely installed, and when replacing the battery, etc., it is rotated together with the opening and closing operation of the lid, so it is easy to insert the battery, etc. without interfering with

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which Fig. 1 is a front view of a portable power tool, Fig. 2 is a front view of a battery, Fig. 3 is a plan view of the same, and Fig. 4 is a partially broken view of a unit battery. FIG. 5 is an enlarged front view, FIG. 5 is a plan view of the lid with the buffer attached, FIG. 6 is a front view, and FIG. 7 is a side view. 1... Portable power tool, 2... Drive unit, 3...
Handle part, 4...Battery, 14...Lid body, 1
9...Mounting piece, 20...Buffer (buffer member).

Claims (1)

[Scope of utility model registration request] The portable power tool is formed into a substantially pistol shape with a drive part that extends horizontally and a handle part that extends substantially vertically from the drive part and is capable of storing a battery. A configuration in which a mounting piece having elasticity is integrally molded and protrudes upwardly from both sides of the lid body made of a spring member to be attached to the side of the handle part, and a buffer member made of an elastic body is further attached to this mounting piece. A portable power tool.