JPH0118306Y2 - - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a vibration-proof tool.

FIG. 1 shows a conventional example of a vibration-proof tool.
As shown in the figure, the anti-vibration tool includes a striking mechanism section 1 having a first power transmission section and a first bearing (both not shown), a second power transmission section and a second bearing (not shown). A prime mover 2 having bearings (both not shown)
The tool body is made up of an integrated tool body and a handle 4 which is joined to the tool body via an elastic body 3, and the elastic body 3 insulates and buffers vibrations from the tool body. In addition, in the same figure, 5 is a tip tool provided at the end of the striking mechanism section 1.

In the anti-vibration tool constructed in this way, the tool body and the handle 4 are separated and the handle 4 is light, so the natural frequency of the handle 4 does not decrease and the anti-vibration effect is small. In order to improve the vibration-proofing effect, the spring constant of the elastic body 3 must be made small, but if the spring constant is made small, the handle 4 will become unsteady, resulting in poor operability.

This invention was created in view of the above points,
The object of the present invention is to provide a vibration-proofing tool that can provide vibration-proofing and improved operability.

That is, the present invention includes a striking mechanism section having a tip tool attached to an end thereof, a first power transmitting section and a first bearing, and a second power transmitting section that drives the striking mechanism section. and a vibration-proofing tool that includes a prime mover having a second bearing and a handle for holding and operating the prime mover, wherein the handle and the prime mover are integrally formed, and the handle and the prime mover are integrally formed. The prime mover section and the striking mechanism section are attached via an elastic body, and with mounting means such that the striking mechanism section swings with respect to the handle and the prime mover section while maintaining a predetermined distance between the axes. This is characterized by the fact that the handle and the prime mover are integrally formed, and the integrally formed handle, prime mover, and striking mechanism are connected to each other via an elastic body, and the striking mechanism is connected to the handle. - It becomes possible to attach to the prime mover using an attachment means that swings while maintaining a predetermined distance between the axes.

Hereinafter, the present invention will be explained based on the illustrated embodiments. An embodiment of the present invention is shown in FIGS. 2 and 3. Note that parts that are the same as those in the conventional system are given the same reference numerals, and therefore their explanations will be omitted. In this embodiment, the handle 4a and the prime mover 2a are integrally formed, and the integrally formed handle and prime mover section 6 and the striking mechanism section 1 are connected via an elastic body 3, and the striking mechanism section 1 is connected to the handle and prime mover section. 6 with a mounting means that swings while maintaining a predetermined distance between the axes. By doing so, the handle 4a and the prime mover 2a are integrally formed, and the integrally formed handle and prime mover section 6 and the striking mechanism section 1 are connected via the elastic body 3, and the striking mechanism section 1 is connected to the handle and the striking mechanism section 1. To obtain a vibration-proofing tool which can be attached to a prime mover part 6 with a mounting means that swings while maintaining a predetermined distance between the axes, and which makes it possible to improve vibration-proofing and operability. I can do it.

That is, the handle 4a and the prime mover 2a are integrally formed, and the integrally formed handle and prime mover section 6 and the striking mechanism section 1 are elastically connected via the elastic body 3. Then, the handle/motor section 6 and the striking mechanism section 1 were attached using a mounting means such that the striking mechanism section 1 swings relative to the handle/motor section 6 while maintaining a predetermined distance between the axes. The attachment means is attached to a second power transmitting part, for example, a first power transmitting part that is larger than the second power shaft 7a, for example, a swingable member installed between the first power shaft 7 and the second power shaft 7a. It is formed by a belt 8 and a connecting body 10 that swingably connects the first and second bearings 9 and 9a. That is, between the prime mover 2a of the handle/prime mover section 6 and the striking mechanism section 1, there are first and second power shafts 7, 7a.
A connecting body 10 is provided to maintain a constant distance between the shafts between the first and second bearings 9, 9.
It was made swingable by a. The power transmission between the first and second power shafts 7, 7a is carried out by a belt 8 that can transmit power even if the positions of the handle/motor section 6 and the striking mechanism section 1 in the direction of the arrow shown in the figure change. I made it.

By doing this, the anti-vibration tool will operate as follows. When the prime mover 2a of the handle/prime mover section 6 is driven, a striking motion is performed in the striking mechanism section 1, and at this time, an impact vibration is generated in the direction of the arrow, which is the striking direction, and the entire striking mechanism section 1 also vibrates in the direction of the arrow. do. However, since the handle and prime mover section 6 are separated by the elastic body 3, the striking mechanism section 1
Even if it vibrates in the direction of the arrow in the figure, the coupling body 10 swings around the second bearing 9a on the prime mover 2a side, as shown by the broken line in the figure, and the belt 8 of the power transmission section also oscillates. As a result of the rocking, the vibration of the handle/prime mover 6 in the direction of the arrow is insulated and alleviated. Further, since the handle 4a is also formed integrally with the prime mover 2a, the vibration damping effect can be improved without increasing the weight and causing the handle 4a to become unsteady, thereby improving operability.

FIG. 4 shows another embodiment of the invention. In this embodiment, the striking mechanism section 1, the prime mover 2a of the handle/prime mover section 6, and the handle 4a are positioned in the axial direction. By doing so, the handle/motor section 6 and the striking mechanism section 1 are vibration-proofed and insulated, and the same effects as in the above-mentioned case can be achieved.

FIG. 5 shows yet another embodiment of the invention. In this embodiment, the attachment means is attached to a first power transmission section, for example, the first gear 11, which is larger than the second power transmission section, for example, the second gear 11a, and a second The first and second gears 11a and the second gears have the same central axis.
an arm 14 connected via a guide 13 to a sliding body 12 provided on the handle/motor section 6 and formed to slide on the outer periphery of the striking mechanism section 1; It was formed with.
By doing so, the impact mechanism section 1 and the handle/motor section 6 can be connected to the first and second gears 11 and 1.
1a, the connecting body 10, the sliding body 12 connected to the arm 14, and the elastic body 3 provide vibration isolation and insulation, and the same effects as in the case described above can be achieved.

FIG. 6 shows yet another embodiment of the invention. In this embodiment, the attachment means is attached to the second power shaft 7.
a swingable belt 8 that is stretched between a first power shaft 7 and a second power shaft 7a that are larger than a;
A swingable connecting body 10 connecting first and second power shafts 7 and 7a and first and second bearings 9 and 9a having the same center axis, respectively, and a swingable connecting body 10 provided in the handle and prime mover section 6. , and is formed by the striking mechanism section 1 and an arm 14 connected via an elastic body 3. By doing this, the striking mechanism section 1 and the handle/motor section 6 are vibration-proofed and insulated via the belt 8, the connecting body 10, and the elastic body 3, and the same effect as in the above case is obtained. can be played.

As described above, the present invention has improved vibration isolation and operability, and it is possible to obtain a vibration-isolated tool with improved vibration isolation and operability.

[Brief explanation of drawings]

Fig. 1 is a front view of a conventional anti-vibration tool, Fig. 2 is a front view of an embodiment of the anti-vibration tool of the present invention, Fig. 3 is an enlarged front view of the area around the power transmission section of the embodiment, Figure 4 is a front view of another embodiment of the anti-vibration tool of the present invention;
FIG. 5 is a front view of still another embodiment of the vibration isolating tool of the present invention, and FIG. 6 is a front view of still another embodiment of the vibration isolating tool of the present invention. DESCRIPTION OF SYMBOLS 1... Impact mechanism part, 2a... Prime mover, 3... Elastic body, 4a... Handle, 5... Tip tool, 6...
...Handle/prime mover section, 7...First power shaft (first power transmission section), 7a...Second power shaft (second
), 8... Belt, 9... First bearing, 9a... Second bearing, 10... Connecting body, 11
...First gear (first power transmission section), 11a...
...Second gear (second power transmission section), 12...Sliding body, 13...Guide, 14...Arm.

Claims (1)

[Claims for Utility Model Registration] 1. A striking mechanism section having a tip tool attached to its end and having a first power transmission section and a first bearing; 2
A vibration-proofing tool comprising a prime mover having a power transmission section and a second bearing, and a handle for holding and operating these, wherein the handle and the prime mover are integrally formed, and the handle and the prime mover are integrally formed. An elastic body is interposed between the formed handle and prime mover section and the striking mechanism section, and the striking mechanism section and the prime mover section are made swingable with a distance between their axes being maintained by a connecting body. A vibration-proof tool characterized by being connected. 2. The anti-vibration tool according to claim 1, wherein the first power transmission section is formed of a first power shaft or a first gear. 3. The anti-vibration tool according to claim 1, wherein the second power transmission section is formed of a second power shaft or a second gear. 4. The attachment means includes a swingable belt that is hung between the first power shaft and the second power shaft, which are formed larger than the second power shaft, and the first and second bearings. A vibration-proofing tool according to claim 1, 2, or 3, which is formed of a connecting body that swingably connects between the parts. 5. The mounting means includes a first gear formed larger than the second gear, a second gear meshed with the first gear, and the first and second gears having the same central axes, respectively. It is formed of a swingable connecting body that connects between the bearings, and an arm that is connected via a guide to a sliding body that is provided on the handle/prime mover section and is formed to slide on the outer periphery of the striking mechanism section. The anti-vibration tool according to claim 1, 2 or 3 of the utility model registration claim. 6. The attachment means includes a swingable belt extending between the first power shaft and the second power shaft, which are formed larger than the second power shaft, and the first,
a swingable connecting body connecting a second power shaft and the first and second bearings having the same center axis; and a second power shaft provided in the handle/motor section and connected to the striking mechanism section and an elastic body. The anti-vibration tool according to claim 1, 2 or 3 of the utility model registration claim, which is formed of an arm joined via a .