JPH0248232Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a portable power tool such as an electric circular saw that is powered by a battery as a power source.The purpose of this invention is to provide a portable power tool with a battery that is easy to attach and detach. A part of the housing is partitioned into a battery case which has approximately the same volume as the battery and has an opening for attaching and detaching the battery to accommodate the battery for driving the motor. The gist of the present invention is to provide a portable power tool that is provided with a stopper that can extend into and retract from the opening for hanging a part of the battery stored therein.

Next, an embodiment of the present invention applied to a portable electric circular saw will be explained with reference to the drawings.
Reference numeral 1 denotes a housing of an electric circular saw M, which is assembled so as to be vertically divided into two parts, and has a hollow, substantially chevron-shaped grip 1a protruding from its upper part.

2 is a motor installed in the front side of housing 1;
3 is a saw blade rotatably supported by the housing 1 and rotationally driven by the motor 2; 4 is a cover that covers the cutting edge of the saw blade 3;

Reference numeral 5 denotes a switch installed near the top of the grip 1a for starting and stopping the motor 2, and has a push button 5a for automatic operation protruding downward.

Reference numeral 6 indicates a fitting portion formed in an inclined manner with respect to the lower side of the grip 1a, and 7 indicates a fitting portion 5 of the switch 5 formed in the fitting portion 6.
It is a lock piece that is fitted and inserted so as to be able to tilt and slide opposite to the push button 5a of the front push button 5.
The front end 7a of the lock piece 7 locks the upper edge of the push button 5a on the lock piece 7 side, locking the push button 5a at the lower moving end, and regulating the starting of the motor 2. , protruding from the lower surface of the lock piece 7,
When the knob 7b inserted through the elongated hole 6a penetrated through the lower front side of the fitting part 6 is pushed rearward to retract the lock piece, the locking state for the push button 5a is released and the push button 5a is released. 5a is allowed to be pushed up, and the motor 2 can be started.

Reference numeral 9 denotes a battery case that is partitioned at the rear of the housing 1 to accommodate a battery B for driving the motor, and is opened at the side for attaching and detaching the battery B, and the battery case 9 is designed to fit the battery B almost tightly. In order to fit, it is formed into a rectangular parallelepiped shape having approximately the same volume as the battery B, and its inner end contacts each exposed terminal of the stored battery B to connect each terminal to the motor 2 or the switch 5. Connecting terminals 10, 10 are provided for this purpose.

Reference numeral 11 denotes a substantially cylindrical side projecting portion 1 installed horizontally between the motor 2 and the battery case 9 within the housing 1.
This is a hooking member that is rotatably fitted into the shaft part 11b, and is attached to one side of a knob part 11b that is connected to the front of the round bar-shaped shaft part 11a. A stopper 11c that appears and retracts from the opening 9a of the battery case 9 when the battery is moved is protruded,
Usually, it is biased inward by a spring 15 interposed between a washer 13 fastened to the rear end surface of the shaft portion 11a with a screw 12 and a washer 14 attached to the rear end surface of the lateral portion 1b. When the protrusion 16 of the knob 11b is raised and the stopper 11c is retracted from the opening 9a, the battery B can be inserted into and removed from the battery case 9, while the protrusion 16 of the knob 11b is turned sideways and the stopper 11c is The battery B stored in the battery case 9 when protruding into the opening 9a
can regulate the withdrawal and migration of

Next, the operation and effects of the embodiment having the above configuration will be explained.

Now, in this example, a battery case 9 is partitioned into a part of the housing 1 in order to store the battery B, and the battery case 9 has the same volume as the battery B and has an opening on the side for attaching and detaching the battery B. A stopper 11c for hooking a part of the battery B housed in the battery case 9 is attached near the opening 9a of the battery case 9 so as to be retractable into the opening 9a.

Therefore, the battery B can be discharged by simply rotating the knob 11b that moves the stopper 11c into and out of the opening 9a.
can be released or latched, and the battery B
It is possible to significantly simplify the number of operations required for replacing or attaching/detaching the battery B, to stabilize the stored state of the battery B, and to improve the appearance of the housing 1.

Furthermore, in this example, the push button 5a of the switch 5 for starting the motor 2 can be releasably locked with the locking piece 7, thereby preventing the push button 5a from malfunctioning and causing the saw blade 3 to rotate when unnecessary. It can be prevented.

That is, in the present invention, a part of the housing of a portable power tool is partitioned into a battery case that has approximately the same volume as the battery for storing the battery for driving the motor, and has one side opened for attaching and detaching the battery. On the other hand, a stopper for hanging a part of the battery stored in the battery case is attached near the opening so that it can be moved into and out of the opening, which greatly simplifies the process of attaching and detaching the battery. This is an extremely practical idea as a portable power tool.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, and FIG. 1 is a partially cutaway plan view, and FIG. 2 is a side view taken along the line X--X in FIG. 1. 1...Housing, 2...Motor, 9...Battery case, 9a...Opening, 11c...Stopper, B...Battery.

Claims (1)

[Scope of utility model registration request] A part of the housing of the portable power tool is partitioned into a battery case for storing a battery for driving the motor, and has a volume approximately equal to that of the battery, and one side of which is open for attaching and detaching the battery. 1. A portable power tool characterized in that a stopper for hanging a part of a stored battery is attached near the opening so that the stopper can move into and out of the opening.