JPH0229949Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a hand-held pine serge machine, and is particularly easy to assemble, and provides a connection between the vibrating head and the main body case so that the vibration of the vibrating head does not easily affect the assembled structure. Concerning configuration.

[Conventional example]

The structure of a conventional hand-held pine surger machine can be roughly divided into a vibrating section head 1 which controls vibrations, a vibration isolating section 2 which absorbs hand vibrations, and a main body section 3 which houses a power supply section such as a drive motor 4. To explain based on FIG. 1, the vibrating head section 1 includes an eccentric weight 7 screwed onto a weight shaft 6 with a screw 5, etc., and a bearing metal press-fitted into a metal case 8 that pivotally supports the weight shaft 6. 9 and cases 10 and 11 made of synthetic resin that cover the parts are housed inside, and an elastic cover 12 and a contact cover 13 cover the surfaces of the parts.

A coupler 16 is connected to the weight shaft 6 and is fixed to a flexible shaft 15 made of a coil spring press-fitted into the drive motor shaft 14 to transmit the rotation of the drive motor 4 . In the metal case 8, one spring seat 18' that supports the elastic support tube 17 made of a coil spring that controls vibration is attached to the case 1 on the side of the vibration head section 1.
1, and the other spring seat 18 is attached to a rib 22 integrally protruding from the inner wall of one of the two main body cases 21 made of synthetic resin by a plurality of screws 19 and washers 20. It is screwed together with the drive motor 4 and a cap 23 made of steel plate. The surface of the elastic support tube 17 is covered with a cover 24 made of an insulating material. The cap 23, which is easily touched by a person, the drive motor 4 having a live part, and the outer frame are double insulated by a gap 25 and an insulating collar 26 on the screw portion for attaching the cap 23.

[Problem that the invention attempts to solve]

However, in this case, the spring seat 18 on the main body case 21 side that supports the elastic support tube 17 is directly fixed to a rib 22 formed with a length extending from the inner wall of the synthetic resin main body case 21 to the other opposing inner wall. Therefore, during use, the pressing force applied to the vibrating head portion is concentrated on the rib 22 extending from the one side, and there is a risk that the rib 22 may be damaged. For this reason, it is conceivable to form the ribs 22 thickly, but this would complicate the internal shape, which is not preferable.

In particular, since the spring seat, motor, etc. are directly attached to the rib 22, these parts must be attached to one side of the main body case, making assembly difficult.

[Means for solving problems]

An object of the present invention is to provide a configuration that can improve assembly workability and product safety.

In order to achieve the above object, the present invention connects a two-part main body case housing a drive motor and a vibrating head portion with a built-in eccentric weight through an elastic support tube, and also connects a vibrating head portion with a built-in eccentric weight, and a weight supporting the eccentric weight. In a hand-held pinsurge machine in which a shaft and a drive motor shaft are connected by a flexible shaft and vibration is generated by rotation of the eccentric weight, a spring seat holding the elastic support tube is extended in the longitudinal direction of the elastic support tube. It is composed of a cylindrical part that comes out and a flange part that extends perpendicularly to the cylindrical part, and the flange part is engaged with a groove formed in the opposing inner wall of the two-split main body case to fix the spring seat. With the outer circumferential side of the cap having an inverted U-shaped cross section engaged with the outer circumference of the end surface of the main body case on the side where the spring seat is fixed, the inner circumferential side is bent in the same direction as the extending direction of the flange, and the bent portion is is fixed to the flange and the two-part main body case is combined.

〔Example〕

An embodiment of the present invention will be described below with reference to FIG. The spring seat 18 that supports the elastic support tube 17 is composed of a cylindrical portion extending in the longitudinal direction of the elastic support tube 17 and a flange portion 28 extending in a direction orthogonal to the cylindrical portion, and has a plurality of through holes. 27 is formed, and the outer peripheral flange portion 28 of this portion engages with a groove 30 formed by a rib 29 integrally protruding from the inner wall facing the main body case 21 .

Further, a fan piece 32 made of an insulating material and integrally formed with a fan 31 for cooling the drive motor 4 is press-fitted into the drive motor shaft 14, and a flexible shaft 15 is connected to the fan piece 32. .
The drive motor 4 is fixed together with the spring seat 18 by the engagement of the two-part main body case 21 by means of a rib 33, an elastic body 34, etc. that protrude integrally with the main body case 21. Spring seat 18 of the main body case 21
A steel plate cap 23 screwed onto the spring seat with a screw 35 or the like is engaged with the outer periphery of the fixed side end surface, and by screwing the other end of the main body case 21 with a screw or the like, the main body case is divided into two parts. 21 connections have been made.

That is, the cap 23 has an inverted U-shape in cross section, and its outer circumferential side is engaged with the outer circumference of the main body case 21, while the inner circumferential side is bent in the same direction as the extending direction of the flange 28. Then, the bent part is attached to the collar part 28.
It will stick along the line.

Therefore, during use, the pressing force applied to the vibration head 1 by a body such as a shoulder is applied to the spring seat 18, but the periphery of the spring seat 18 is fixed to the opposing inner wall of the main body case 21 by the collar 28. Therefore, unlike the conventional example, it is sturdy in a specific direction, but there is no possibility of damage in other directions, and it can be easily assembled and replaced.

[Effect of idea]

As described above, according to the present invention, the drive motor 4
The two-split main body case 21 that houses the inside, and the eccentric weight 7
The eccentric weight 7 is connected to the vibrating head section 1 containing the built-in weight via an elastic support tube 17, and the weight shaft 6 supporting the eccentric weight 7 and the driving motor shaft 14 are connected by a flexible shaft 15. In a hand-held pine surge machine that generates vibrations by the rotation of
The cylindrical portion extends in the longitudinal direction, and the flange portion 28 extends in a direction orthogonal to the cylindrical portion. engages and fixes the spring seat 18;
With the outer periphery of the cap 23 having an inverted U-shaped cross section engaged with the outer periphery of the fixed side end surface of the spring seat 18 of the main body case 21, the inner periphery is bent in the same direction as the extending direction of the flange 28. Since the bent portion is fixed to the flange 28 to join the two-part main body case 21, the pressing force against the user's body is received by the cylindrical portion extending in the longitudinal direction of the spring seat 18. 28 extends in a direction perpendicular to this, the pressing force is dispersed in the entire circumferential direction, and the pressing force is not locally concentrated, thereby preventing damage to the supporting portion.

Furthermore, the inner circumferential side of the cap 23 that connects the two-part main body case 21 is fixed along the flange 28 that has the function of dispersing the pressing force, so that the pressing force does not directly act on the cap 23. This eliminates the possibility of the two-split main body case 21 becoming loosely connected, resulting in a case structure that is simple and strong over a long period of time, and parts can be easily replaced.

[Brief explanation of drawings]

FIG. 1 is a partial vertical cross-sectional view of a conventional configuration, and FIG. 2 is a partial vertical cross-sectional view of the present invention. 1... Vibration head section, 4... Drive motor, 6...
... Weight shaft, 7 ... Eccentric weight, 14 ... Drive motor shaft, 15 ... Flexible shaft, 17 ... Elastic support tube, 21
...main body case, 23...cap, 28...flange, 30...concave groove.

Claims (1)

[Scope of utility model registration request] Two-part main body case 21 that houses the drive motor 4
and the vibrating head section 1 containing an eccentric weight 7 are connected via an elastic support tube 17, and the eccentric weight 7 is
A hand-held pine surge machine in which a weight shaft 6 supporting the weight shaft 6 and a drive motor shaft 14 are connected by a flexible shaft 15, and vibration is generated by rotation of the eccentric weight 7,
A spring seat 18 that holds the elastic support tube 17 is a cylindrical portion extending in the longitudinal direction of the elastic support tube 17;
It is composed of a flange 28 extending perpendicularly to this cylindrical portion, and the flange 28 is engaged with a groove 30 formed on the opposing inner wall of the two-split main body case 21 to fix the spring seat 18. With the outer periphery of the cap 23 having an inverted U-shaped cross section engaged with the outer periphery of the fixed side end surface of the spring seat 18 of the main body case 21, the inner periphery is bent in the same direction as the extending direction of the flange 28. The bent part is the flange part 28.
This hand-held pine surge machine is characterized by having a two-part main body case 21 fixedly attached to the body.