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Vibration isolating handle

A handle and vibration isolation technology, used in vibration suppression adjustment, lightweight impact tools, control components, etc., can solve the problem of not being able to obtain vibration reduction effects, and achieve the effect of reducing vibration

Active Publication Date: 2005-03-16
MAKITA CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, a stable vibration damping effect cannot be obtained, and further improvement is required

Method used

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Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0049] Embodiments of the present invention will be described below with reference to the accompanying drawings. Embodiments of the present invention will be explained as a vibration-isolated handle when used as an auxiliary handle to operate a rotary hammer, which is a typical example of a reciprocating power tool. Figure 1 shows the entire vibration-isolated handle attached to the hammer in dotted lines. figure 2 and image 3 is a vertical section view showing the secondary handle. also, Figure 4 and Figure 5 is a cross-sectional view showing part of the auxiliary handle.

[0050] First, the electric hammer 101 to which the auxiliary handle 121 is connected is briefly described with reference to FIG. 1 . The electric hammer 101 mainly includes a body 103 , which defines the shape of the electric hammer 101 . The body 103 is a feature corresponding to the "power tool body" of the present invention. The body 103 includes a motor housing 105 , a gear housing 107 and a ...

no. 2 example

[0076] The following will refer to Figure 6 to Figure 11 A second representative embodiment of the present invention will be described. Figure 6 shows by dotted lines the entire auxiliary handle attached to the rotary hammer. Figure 7 and Figure 8 is a vertical section view showing the auxiliary handle. also, Figure 9 to Figure 11 A cross-sectional view showing part of the auxiliary handle.

[0077] The electric hammer 201 mainly includes a body 203 , which defines the shape of the electric hammer 201 . This body 203 is a feature corresponding to the "power tool body" according to the present invention. The body 203 includes a motor housing 205 , a gear housing 207 and a tool holder (tubular portion) 209 occupying the top (front end) region of the gear housing 207 . The main handle (grip) 211 is mounted on the rear ends of the motor casing 205 and the gear casing 207 .

[0078] The auxiliary handle 221 includes a handle body 223 and a grip portion 225 . The handle ...

no. 3 example

[0093] The following will refer to Figure 12 to Figure 16 A third representative embodiment of the present invention will be described. This embodiment is a modification of the installation structure of the dynamic damper 341 of the auxiliary handle 321 according to the second embodiment. In the third embodiment, the dynamic damper 341 is constructed by using an area of ​​about half of the side of the grip portion 325 away from the pivot shaft 337 in its longitudinal direction. The weight 345 of the dynamic shock absorber 341 extends along the axial direction of the grip portion 325 . The counterweight 345 is disposed in the cylindrical body 343 such that the longitudinal direction of the counterweight 345 coincides with the longitudinal direction of the cylindrical body 343 . The cylindrical body 343 is defined as an area of ​​about half of the cylindrical body 326 of the grip portion 325 . The counterweight 345 can move along the longitudinal direction parallel to the bo...

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PUM

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Abstract

Then invention relates to a kind of shock absorption technique that can absorb shocking effectively and steadily. It includes mainly a handle that consists of a main unit, hold part, and spring unit. The main handle is fixed to the electric tool. The hold part connects to the main handle, so it can move along the same direction as the electric tool vibration direction. The spring unit is between the main handle and the hold part. When the hold part moves, the spring unit imposes slanting power on it. Using this invention, no matter how much the force that the person holding is, the spring unit can absorb shocking.

Description

technical field [0001] The present invention relates to a vibration-isolating handle attached to a reciprocating power tool, such as a rotary hammer and a hammer drill, which drives a bit at a predetermined cycle. Background technique [0002] Japanese Utility Model Publication No. 63-6343 discloses an auxiliary operating device in the form of a vibration-isolated handle, which in use is connected to the body of an electric hammer for operating the electric hammer. In this prior art document, the handle is formed by covering the handle with a hard plastic tube and then covering the hard plastic tube with a soft plastic tube. [0003] The above-mentioned handle is designed to damp the vibration through the flexible tube and prevent deformation through the hard tube. However, the damping effect varies with the user's grip on the handle. Therefore, a stable vibration damping effect cannot be obtained, and further improvement is awaited. Contents of the invention [0004] T...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B25D17/04B25F5/00B25F5/02
CPCB25D17/043B25F5/006B25F5/026
Inventor 冲贞治杉山义夫
Owner MAKITA CORP
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