JPS6246485Y2 - - Google Patents

Description

[Detailed description of the invention] This invention has a simple structure and is easy to assemble.
This invention relates to the structure of a vibrating drill that allows the shape of the handle to be easily changed.

Vibration drills have the problem of causing severe vibrations to the bit, and the reaction force acting on the operator's hands may cause injury to the operator's hands during long hours of operation.

Therefore, it is necessary to protect the workers by using anti-vibration gloves to reduce vibrations.

However, since such a treatment is burdensome for the operator every time he or she performs the work, there has been a demand for a vibrating drill that has a vibration-proofing effect.

Conventionally, some relatively large vibration drills called impact tools had an elastic member interposed between the main body and the handle to obtain a vibration-proofing effect, but the heavy main body In reality, supporting the structure with an elastic member for vibration isolation has problems that conflict with workability, and the structure has been difficult to come by.

Furthermore, small-sized vibrating drills require handles of various shapes, and it has been desired to be able to accommodate the attachment of these different handles.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a vibratory drill having a simple structure, a sufficient vibration-proofing effect, and a structure to which different handles can be easily attached.

Hereinafter, the present invention will be explained based on an embodiment shown in the drawings. Fig. 1 is a side view of a main part notch of a vibration drill showing an embodiment of the present invention;
The figure is a longitudinal sectional view of the main part.

FIG. 3 is an enlarged longitudinal sectional view of the fixed portion of the handle.

In FIG. 1, the vibratory drill is configured such that a stator of an electric motor is provided inside a case 1 forming a main body, and a commutator portion of a rotor 2 is exposed from the rear of the case 1.

A step 3 is formed at the rear of the case 1, and a handle 4 is fitted into the step 3.

Further, the handle 4 is divided into two parts, and is configured so that they can be fitted and attached from both sides.

Further, a protrusion 5 is formed at the rear of the case 1, and a retainer 7 of a brush 6 that slides on the commutator of the rotor 2 is fitted into the protrusion 5.

A through hole 8 is formed in the protruding portion 5 and passes through the handle 4 in the fitting direction, and this through hole 8 is equipped with a hollow elastic member 9 made of rubber or the like. Configured to be fixed.

That is, the handle 4 is assembled and fixed in the hollow portion of the elastic member 8 using a fixing device such as a bolt.

Further, the protrusion 5 has a built-in bearing.
It is configured to support the rotor 2.

Further, a stepped portion 3 formed at the rear of the case 1 is configured so that an elastic member 10 such as a rubber packing is attached, and is interposed between the handle 4 and the case 1 so that the two do not come into direct contact with each other. has been done.

At the front of the case 1, a chuck 11 is provided together with a vibration generating section, and a bit 12 is configured to be detachable.

In FIG. 2, in the vibrating drill, a holding part 13 for holding a retainer 7 of a brush 6 is formed on a protruding part 5.

In FIG. 3, the vibration drill has an elastic member 9 made of a material such as rubber attached to a through hole 8 of a protrusion 5, and a portion 14 protruding from the handle 4 side in the hollow part of the elastic member 9. are fitted, and the handle 4 is configured to hold the elastic member 9 from both sides by bolts and nuts 15.

In such a configuration, the vibratory drill includes a case 1 provided with an electric motor and a rotor 2.

Then, elastic members 9 and 10 are fitted into the stepped portion 3 and the through hole 8 of the protruding portion 5 formed at the rear of the case 1, and the handle 4 is attached from both sides.

Further, the handle 4 is assembled so as to be firmly fixed to the case 1 by tightening and fixing the handle 4 with bolts and nuts 15.

Since the handle 4 assembled in this manner is provided to the case 1 with the elastic members 9 and 10 interposed therebetween, vibrations occurring in the case 1 are blocked from all directions.

Furthermore, the handle has sufficient rigidity against tension and twisting, and furthermore, it can be easily disassembled and assembled, so it can be easily replaced with another handle of a different shape.

Therefore, a handle corresponding to the working posture and working conditions can be easily provided, and the tool can be used effectively as a working tool.

Further, if a commutator motor is used, brushes must be replaced, but this can be easily done by disassembling the handle, which is convenient.

It is effective to form the shape of the protrusion 5 so that it is covered by the handle 4 as in this embodiment, that is, to attach the handle 4 so as to sandwich the protrusion 5 from both sides. 4 is arranged so as to have a fixing effect on the case 1.

Further, as in this embodiment, the through holes 8 may be formed in at most two places, the elastic member 9 may be provided, and the other may be held by the stepped portion 3 of the case 1 with the elastic member 10 interposed therebetween. good.

The shape of the protrusion 5 and the method of attaching the elastic member 9 are as follows.
Structurally, the design can be changed arbitrarily, and if the handle 4 is configured to sandwich the protrusion 5 from both sides, the handle can be replaced,
This has the effect of being extremely convenient during assembly and disassembly.

Further, when the elastic member 9 is held between the handles 4, the elastic member 9 is deformed and acts strongly against the protrusion 5, which is effective because there is no gap during attachment.

The gripping by the handle 4 is effective because it can be easily assembled using bolts and nuts 14.

As explained above, according to the present invention, a protrusion is formed at the rear of the case, and an elastic member is provided on the protrusion, and the protrusion is assembled so as to be held between two handles, and the protrusion is covered with the handle. This configuration not only makes it easy to replace the brush, but also allows different handles to be assembled easily, which is effective in both practical and manufacturing aspects, and the effect is extremely practical.

[Brief explanation of the drawing]

FIG. 1 is a side view of a main part of a vibrating drill showing an embodiment of the present invention, and FIG. 2 is a longitudinal sectional view of the main part thereof. FIG. 3 is an enlarged longitudinal sectional view of the fixed portion of the handle. 1...Case, 4...Handle, 5...Protrusion, 8...Through hole, 9, 10...Elastic member.

Claims (1)

[Claims for Utility Model Registration] (1) A vibration characterized in that a protrusion is formed at the rear of a case in which an electric motor is housed, and an elastic member is interposed between the handles and the handle is sandwiched between two parts. Drill. (2) Claim 1 of the above-mentioned utility model registration, characterized in that protrusions are formed on both sides of the handle-side bearing so that the handle covers the rear part of the electric motor.
Vibration drill as described in section. (3) Claim 1 or 2 of the above-mentioned utility model registration claim, characterized in that the protruding portion is provided with a brush holder so that the brush can be easily replaced by removing one of the handles. Vibratory drill as described.