JPS6157161B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a battery-powered circular saw that has a built-in battery and can be used even in places without a power outlet.

[Background Art] As shown in FIG. 1, in a conventional battery-powered circular saw, the end surfaces of a battery storage section 2', in which a battery can be taken in and out in a direction perpendicular to the cutting direction, and a motor housing 1' are flush with each other. Because of this, there was no suitable place to place the left hand, and cutting was performed only by operating the handle with the right hand, making it difficult to perform the cutting operation, and in particular, making it difficult to cut straight. . Also, if the hook engagement of the battery fixing bracket is weak,
There was a problem that the battery could pop out due to vibration during the cutting operation. Furthermore, when using a battery that has a long dimension in the insertion/removal direction, there is a problem in that it is difficult to insert the battery into the battery storage section which can be freely inserted and removed in a direction perpendicular to the cutting direction.

[Object of the Invention] The present invention has been made in view of the above points, and its purpose is to enable operation with both hands, to perform cutting operations easily and stably, and to provide a cutting method that can be easily and stably cut. To provide a battery-powered circular saw which can prevent a battery from flying out during operation and can easily insert the battery into a battery storage part.

[Disclosure of the Invention] (Embodiment) Figures 2 to 5 show an embodiment of the present invention, and show a motor housing 1 provided with a circular saw blade 3 at one side end and a cutting direction by the circular saw blade 3. A power storage section 2 in which a battery 13 can be taken in and taken out in a direction perpendicular to X is arranged in parallel with the cutting direction X, and a handle 4 is provided at one end of each of the motor housing 1 and the battery storage section 2 and extends over both. form the motor housing 1
A protrusion 6 for auxiliary operation that protrudes in a direction perpendicular to the cutting direction It has been established. In the embodiment, a substantially cylindrical motor housing 1 in which a motor 16 is incorporated, a battery storage part 2 in which a battery 13 is stored, a circular saw blade 3 rotated by the motor 1, etc. are mounted on a base. The motor housing 1 and the battery storage section 2 are arranged side by side in the cutting direction X. Moreover, an uneven part 7 for preventing slipping is provided on the outer circumferential surface of the protruding part 6 for auxiliary operation on the battery storage part 2 side. Furthermore, a battery fixing fitting 9 is pivotally supported on the periphery of the battery inlet/outlet 8, and a hook 10 of the battery fixing fitting 9 is latched to a locked portion 11 on the periphery of the battery inlet/outlet 8. be. In the figure, 14 is a battery holding protrusion, 15 is a switch, and 16 is a motor.

The cutting operation of the embodiment will be explained below. Now, when operating the battery-powered circular saw according to the present invention to perform a cutting operation, hold the handle 4 with your right hand, place your left hand on the uneven part 7 of the protrusion 6 for auxiliary operation, and move it in the cutting direction in the X direction. By extruding, the cutting operation can be performed easily and stably, and in particular, the operability when cutting straightly can be improved. In this case, the protruding part 6 for auxiliary operation consists of only the motor housing 1, excluding the battery storage part 2, which has a shape that is easy to grasp (appropriate size for the user's palm), and has a shape that is easy to grasp (appropriate size for the user's palm). Battery compartment 2 of protrusion 6 for operation
Since a non-slip uneven portion 7 is formed on the outer circumferential surface of the side, operability can be improved.

Further, the battery insertion/extraction port 8 of the battery storage section 2, through which the battery 13 can be freely inserted and removed in a direction perpendicular to the cutting direction Since the left hand attached to the protrusion 6 for auxiliary operation can be used to prevent the battery 13 from flying out during the cutting operation, the battery 13, which has a long dimension in the insertion and removal direction, can be prevented.
When inserting the battery 13 into the battery storage section 2, the protrusion 6 for auxiliary operation can be used as a guide, making it easy to install the battery 13.

By the way, FIG. 3 is an explanatory diagram of the falling operation,
If a battery-powered circular saw is dropped with the protrusion 6 for auxiliary operation facing down as shown in the figure, the protrusion 6 for auxiliary operation collides with the floor and at the same time the inertia of the battery 13 lifts the saw. 10 is removed, the battery fixing fitting 9 is opened, and the battery 13 is received by the electric loosening fixing fitting 9, so that the impact on the battery 13 is relieved.

[Effects of the Invention] As described above, the present invention includes a motor housing provided with a circular saw blade at one end and a battery storage portion into which a battery can be freely inserted and removed in a direction perpendicular to the cutting direction by the circular saw blade. In addition to being arranged in parallel in the cutting direction, a handle is formed at one end of each of the motor housing and the battery compartment, and a handle is formed on the other end of the motor housing to protrude in a direction perpendicular to the cutting direction and is wider than the battery compartment. A protrusion protruding outward for auxiliary operation is provided, and a battery inlet/outlet is provided on the other end of the battery storage part.When operating a battery-powered circular saw to perform cutting operations, By holding the handle with your right hand and pushing the handle in the cutting direction with your left hand on the protrusion for auxiliary operation, you can perform the cutting operation easily and stably, improving operability especially when cutting in a straight line. It has the effect of being able to In this case, the protruding part for auxiliary operation consists only of the motor housing, and the part excluding the battery compartment has a shape that is easy to grasp (appropriate size for the user's palm), improving operability. You can only make it better. In addition, since the battery insertion/extraction port of the battery storage part through which the battery can be taken in and out in a direction perpendicular to the cutting direction is provided on the other end surface of the battery storage part, that is, on the same side as the protrusion for auxiliary operation, The left hand attached to the protrusion for auxiliary operation can prevent the battery from flying out during the cutting operation, and when inserting a long battery in the insertion/removal direction into the battery compartment, the auxiliary operation can be used. The protrusion can be used as a guide, and the battery can be easily installed.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a conventional example, FIG. 2 is a perspective view of an embodiment of the present invention, and FIG. 3 is an explanatory diagram of the same falling operation.
FIG. 4 is a cross-sectional view of the same as above, and FIG. 5 is a longitudinal cross-sectional view of same as above. 1 is a motor housing, 2 is a battery storage section, 3 is a circular saw blade, 4 is a handle, 6 is a protrusion, 8 is a battery slot, and 13 is a battery.

Claims (1)

[Scope of Claims] 1. A motor housing provided with a circular saw blade on one side end and a battery storage portion in which a battery can be freely inserted and removed in a direction perpendicular to the cutting direction by the circular saw blade are arranged side by side in the cutting direction, and A handle is formed at one end of each of the motor housing and the battery compartment, and a handle is formed on the other end of the motor housing to protrude in a direction perpendicular to the cutting direction and protrude outward from the battery compartment. 1. A battery-powered circular saw characterized by having a protrusion for use in the battery storage, and a battery insertion/exit opening on the other end surface of the battery storage part. 2. The battery-powered circular saw according to claim 1, characterized in that an anti-slip uneven portion is formed on the outer circumferential surface of the protruding portion of the motor housing on the battery storage portion side.