JP6097583B2 - Vibration reduction device for hand-held power tools - Google Patents

Description

  The present invention relates to a vibration reducing device used for a hand-held power tool such as a brush cutter or a chain saw.

  2. Description of the Related Art Conventionally, a soft member such as rubber disposed between a power source that is a vibration source and a handle is known as a vibration reducing member of a hand-held power tool such as a brush cutter or a chain saw. According to this soft member, vibration can be absorbed by the soft movement and shape of the material. However, with this soft member, not only can a vibration in a wide range of frequencies be completely absorbed, but also due to the relationship between the power source and the hand-held power tool body, the hand-held power tool body will sway greatly. Cases arise.

  On the other hand, the vibration reduction apparatus shown in the literature 1 is proposed. In this vibration reducing device, a granular weight member is filled in a hollow pipe of a handle (grip) so as to vibrate. Therefore, vibration energy from the power source is converted into energy such as elastic deformation and friction between the granular weight members, and vibrations in a wide range of frequencies can be absorbed.

Japanese Utility Model Publication No. 57-150641

  However, in the vibration reducing device described in Patent Document 1, a large amount of granular weight members are filled in the hollow pipe of the handle (grip), so that the looseness of the lower granular weight member is higher than that of the upper granular weight member. Decreasing due to weight, the vibration reducing effect of the entire vibration reducing device is reduced. Further, in this vibration reducing device, the position where the granular weight member is filled is limited to the inside of the hollow pipe of the handle (grip), so there are cases where the vibration reducing device cannot be mounted at the most effective position. In other words, it cannot be used for various types of hand-held power tools.

  The present invention has been made in view of such conventional problems, and provides a vibration reduction device for a hand-held power tool that can sufficiently exhibit a vibration reduction effect and is versatile.

In order to solve the above-mentioned problem, a vibration reducing device for a hand-held power tool according to claim 1 includes a case in which a granular weight member is filled so as to be able to vibrate, and a connecting member that connects the plurality of cases. the connecting member forms a planar or curved, on one surface of the connecting member, a plurality of the case is attached, the other side of the connecting member, a spiral on the outer periphery of the Tenigi portion of the hand-held power tool It is to be wound and fixed in a shape .
A vibration reducing device for a hand-held power tool according to claim 2 includes a case in which a granular weight member is filled so as to be able to vibrate, and a connecting member that connects the plurality of cases, and the connecting member has a cylindrical shape. The plurality of cases are attached to the inner peripheral surface of the connecting member, and the outer peripheral surface of the connecting member is attached to the inner peripheral portion of the hand grip portion of the hand-held power tool.

In the vibration reducing device for a hand-held power tool according to a third aspect , the case is made of a hard member.

In the vibration reducing device for a hand-held power tool according to a fourth aspect , the case and the connecting member are integrally formed.

The vibration reducing device for a hand-held power tool according to claim 1 includes a plurality of cases filled with granular weight members so as to vibrate, and a connecting member for connecting these cases. Therefore, an appropriate amount of granular weight members can be filled in each case, and the looseness of all the granular weight members is appropriately ensured. As a result, vibration energy from the power source is efficiently converted into energy such as elastic deformation and friction between the granular weight members, and vibrations in a wide range of frequencies can be reliably absorbed. Further, in this handheld power tool vibration reducing device, since the connecting member can be mounted at a desired position of the handheld power tool, the vibration reducing device is mounted at a position where the vibration reducing effect is most effectively obtained. Can do. Therefore, according to the vibration reducing device for a handheld power tool, the vibration reducing effect can be sufficiently exerted, and it can be used for various types of handheld power tools. Furthermore, in this handheld power tool vibration reducing device, a plurality of cases are attached to one surface of a planar or curved connecting member, and the other surface of the connecting member is attached to the outer periphery of the hand grip portion of the handheld power tool. It is wound and fixed in a spiral. If the entire vibration reducing device for a handheld power tool can be deformed by deforming the connecting member, the vibration reducing device can be easily attached in accordance with the shape of the hand grip. For example, if the connecting member connects a plurality of cases in a chain shape, a crawler shape, etc., even if the grip portion is bent, the vibration reducing device can be easily made by winding the connecting member around the outer peripheral portion. Can be installed. Further, if the mounting position of the handheld power tool vibration reducing device is a fixed position, the connecting member cannot be deformed by matching the shape of the other surface of the connecting member to the outer periphery of the hand grip. Good. In addition, a wire, a metal plate, a tape, a string, a fastener, a bolt nut, etc. can be used as a fixture which attaches a vibration reduction apparatus to the outer peripheral part of a grip part. Further, in this specification, the “hand grip portion” refers to a handle, a protruding portion in the vicinity of the handle, a rod-shaped portion, and the like.
The vibration reducing device for a hand-held power tool according to a second aspect includes a plurality of cases filled with a granular weight member so as to vibrate, and a connecting member that connects these cases. Therefore, an appropriate amount of granular weight members can be filled in each case, and the looseness of all the granular weight members is appropriately ensured. As a result, vibration energy from the power source is efficiently converted into energy such as elastic deformation and friction between the granular weight members, and vibrations in a wide range of frequencies can be reliably absorbed. Further, in this handheld power tool vibration reducing device, since the connecting member can be mounted at a desired position of the handheld power tool, the vibration reducing device is mounted at a position where the vibration reducing effect is most effectively obtained. Can do. Therefore, according to the vibration reducing device for a handheld power tool, the vibration reducing effect can be sufficiently exerted, and it can be used for various types of handheld power tools. Furthermore, a plurality of cases are attached to the inner peripheral surface of the cylindrical connecting member, and the outer peripheral surface of the connecting member is attached to the inner peripheral portion of the hand grip portion of the hand-held power tool. Therefore, the vibration reducing device can be attached without affecting the outer shape of the hand-held power tool.

In the vibration reducing device for a hand-held power tool according to the third aspect , since the case is made of a hard member, the vibration energy of the granular weight member hitting the inner wall of the case is easily canceled. As the material of the case, hard vinyl chloride, aluminum, steel, stainless steel, or the like can be used.

In the vibration reducing device for a hand-held power tool according to the fourth aspect , the case and the connecting member are integrally formed, so that productivity can be improved.

FIG. 3 is a perspective view of the vibration reducing device according to the first embodiment. FIG. 3 is a cross-sectional view of the vibration reducing device according to the first embodiment. The perspective view of the hand-held power tool which attached the vibration reduction apparatus of Embodiment 1. FIG. The perspective view of the vibration reduction apparatus of Embodiment 2. FIG. Sectional drawing of the vibration reduction apparatus of Embodiment 2. FIG. The perspective view of the hand-held power tool which attached the vibration reduction apparatus of Embodiment 2. FIG. FIG. 6 is a perspective view of a vibration reducing device according to a third embodiment. Sectional drawing of the vibration reduction apparatus of Embodiment 3. FIG. The perspective view of the hand-held power tool which attached the vibration reduction apparatus of Embodiment 3. FIG. The perspective view of the hand-held power tool which attached the vibration reduction apparatus of Embodiment 4. FIG.

  Embodiments 1 to 4 embodying a vibration reduction device for a handheld power tool (hereinafter referred to as a vibration reduction device) according to the present invention will be described below with reference to the drawings. First, the vibration reducing apparatus according to the first embodiment will be described. FIG. 1 is a perspective view of a vibration reducing apparatus 10 according to the first embodiment, and FIG. 2 is a cross-sectional view. As shown in FIGS. 1 and 2, the vibration reducing device 10 includes a case 11 and a connecting member 15.

  The case 11 includes a cylindrical main body 12 and a lid 13, and the main body 12 is filled with a granular weight lower member 14 so as to vibrate. The connecting member 15 has a band shape, and the mounting hole 16 is integrally provided over the entire circumference. A wire 17 as an attachment tool is fitted into the attachment hole 16. A plurality of cases 11 are erected in the longitudinal direction of one surface of the connecting member 15. The main body 12 and the connecting member 15 are integrally formed. Here, the main body 12, the lid 13, and the connecting member 15 are made of soft vinyl chloride. The material of the main body 12, the lid 13, and the connecting member 15 is not limited to soft vinyl chloride, and polyethylene, rubber, silicon, urethane, or the like may be employed.

  Although not shown, the main body 12 and the lid 13 of the case 11 may be formed of separate members made of hard vinyl chloride and fixed in the longitudinal direction of one surface of the connecting member 15. The case 11 is not limited to hard vinyl chloride, and aluminum, steel, stainless steel or the like may be employed.

  FIG. 3 is a perspective view of the brush cutter to which the vibration reducing device 10 is attached. As shown in FIG. 3, the vibration reducing device 10 is attached to the outer periphery of the hand grip (the handle 91 and the operation rod 90 near the handle 91). At this time, the vibration reducing device 10 is wound in a spiral shape, and the winding shape is maintained by the plasticity of the wire 17 so that the vibration reducing device 10 is fixed to a predetermined position of the brush cutter. In addition, although the wire 17 inserted in the attachment hole 16 is used as an attachment tool, another attachment method may be adopted. For example, without using the mounting hole 16, a wire, a metal plate, a tape, a string, a fastener, or the like is adopted as a mounting tool. The vibration reducing device 10 can also be fixed by, for example, binding.

  The vibration reduction device 10 according to the first embodiment includes a plurality of cases 11 in which granular weight members 14 are filled so as to be able to vibrate, and a connecting member 15 that connects these cases 11. Therefore, each case 11 can be filled with an appropriate amount of the granular weight member 14, and the looseness of all the granular weight members 14 can be appropriately secured. As a result, vibration energy from the power source is efficiently converted into energy such as elastic deformation and friction between the granular weight members 14, and vibrations in a wide range of frequencies can be reliably absorbed. Moreover, in this vibration reduction apparatus 10, since the connection member 15 can be attached to the desired position of a brush cutter, the vibration reduction apparatus 10 can be attached to the position where the vibration reduction effect is most effectively obtained. Therefore, according to the vibration reducing device 10, the vibration reducing effect can be sufficiently exhibited. Further, the vibration reducing device 10 can be used not only for a brush cutter but also for various kinds of hand-held power tools.

  Moreover, in this vibration reduction apparatus 10, since the case 11 and the connection member 15 are integrally formed, productivity can be improved. Further, in the vibration reducing device 10, a plurality of cases 11 are attached to one surface of the belt-like connecting member 15, and the other surface of the connecting member 15 is a gripping portion of the brush cutter (the handle 91 and the operation rod 90 near the handle 91. ). Since the connecting member 15 is made of a band-like soft vinyl chloride, the vibration reducing device 10 can be easily attached by being wound in accordance with the shape of the grip portion.

  Next, the vibration reducing apparatus according to the second embodiment will be described. FIG. 4 is a perspective view of the vibration reducing apparatus 20 according to the second embodiment, and FIG. 5 is a cross-sectional view. As shown in FIG. 4, in the vibration reducing device 20, three vibration reducing devices 20 are fixed to the outer peripheral portion of the grip portion (handles 92 and 93) by bolts 27 and nuts 28 as fixtures.

  As shown in FIG. 5, the vibration reducing device 20 includes a case 21 and a connecting member 25. Four cases 21 are juxtaposed in the axial direction of the vibration reducing device 20, and each case 21 is filled with a granular weight lower member 24 so as to vibrate. And the connection member 25 comprises the curved surface shape match | combined with the outer peripheral part of the grip part (handles 92 and 93), and has connected so that each case 21 may be sealed. The case 21 is made of hard vinyl chloride, and the connecting member 25 is made of polyethylene. The material of the case 21 is not limited to hard vinyl chloride, and aluminum, steel, stainless steel or the like may be employed. The material of the connecting member 25 is not limited to polyethylene, and soft vinyl chloride, rubber, silicon, urethane, or the like may be employed.

  FIG. 6 is a perspective view of a chain saw in which three vibration reducing devices 20 are attached at two locations. As shown in FIG. 6, the vibration reducing device 20 is attached to the outer peripheral portion of the hand grip (handles 92 and 93) by bolts 27 and nuts 28. In addition, although the volt | bolt 27 and the nut 28 are used as a fixture, you may employ | adopt another attachment method. For example, the vibration reducing device 20 can be fixed by using a wire, a tape, a string, a fastener, or the like as the fixture and binding the case 21 with a wire, tape, string, fastener, or the like.

  The vibration reduction device 20 according to the second embodiment includes a plurality of cases 21 in which granular weight members 24 are filled so as to be able to vibrate, and connecting members 25 that connect these cases 21. Therefore, each case 21 can be filled with an appropriate amount of the granular weight member 24, and the looseness of all the granular weight members 24 is appropriately secured. As a result, vibration energy from the power source is efficiently converted into energy such as elastic deformation and friction between the granular weight members 24, and vibrations in a wide range of frequencies can be reliably absorbed. Moreover, in this vibration reduction apparatus 20, since the connection member 25 can be attached to the desired position of the chain saw, the vibration reduction apparatus 20 can be attached to a position where the vibration reduction effect is most effectively obtained. Therefore, according to the vibration reducing device 20, the vibration reducing effect can be sufficiently exhibited. The vibration reducing device 20 can be used not only for a chain saw but also for various kinds of hand-held power tools.

  Further, in the vibration reducing device 20, the case 21 is made of hard vinyl chloride, which is a hard member, so that the vibration energy of the granular weight member 24 that hits the inner wall of the case 21 is easily canceled. Furthermore, in this vibration reduction device 20, a plurality of cases 21 are attached to one surface of a curved connecting member 25 that matches the outer peripheral portion of the hand grip (handles 92, 93), and the other surface of the connecting member 25 is a chain saw. It is attached to the outer periphery of the hand grip (handles 92, 93). Since the connecting member 25 is made of a curved polyethylene conforming to the outer periphery of the hand grip (handles 92, 93), it can be easily attached to match the shape of the hand grip (handles 92, 93).

  Next, a vibration reducing apparatus according to Embodiment 3 will be described. FIG. 7 is a perspective view of the vibration reducing apparatus 30 according to the third embodiment, and FIG. 8 is a cross-sectional view. FIG. 9 is a perspective view of the brush cutter to which the vibration reducing device 30 is attached. As shown in FIGS. 7 and 8, the vibration reducing device 30 includes a case 31, a storage cylinder 35 as a connecting member, and a cap 37 as a fixture.

  The case 31 has a cylindrical shape having a lid and a bottom, and is filled with a granular lower member 34 so as to vibrate. The storage cylinder 35 has a bottomed cylindrical shape and stores four cases 31. The cap 37 is a fixture for fixing the vibration reducing device 30 to the brush cutter. However, the cap 37 also serves as a connecting member that restricts the movement of the case 31 in the storage cylinder 35. Here, the case 31, the cap 37, and the storage cylinder 35 are made of hard vinyl chloride. As shown in FIG. 9, the vibration reducing device 30 is mounted in a hand grip (handle 94). The material of the case 31, the cap 37, and the storage cylinder 35 is not limited to hard vinyl chloride, and aluminum, steel, stainless steel, polyethylene, rubber, silicon, urethane, or the like may be employed.

  The vibration reduction device 30 according to the third embodiment includes a plurality of cases 31 filled with a granular weight member 34 so as to vibrate, a storage cylinder 35 that connects these cases 31, and a cap 37. Therefore, each case 31 can be filled with an appropriate amount of the granular weight member 34, and the looseness of all the granular weight members 34 is appropriately secured. As a result, vibration energy from the power source is efficiently converted into energy such as elastic deformation and friction between the granular weight members 34, and vibrations in a wide range of frequencies can be reliably absorbed. Moreover, in this vibration reduction apparatus 30, the vibration reduction apparatus 30 can be attached to a position where a vibration reduction effect can be effectively obtained. Therefore, according to the vibration reducing device 30, the vibration reducing effect can be sufficiently exerted. The vibration reducing device 30 can be used not only for a brush cutter but also for various types of hand-held power tools.

  Further, in this vibration reducing device 30, since the case 31 is made of hard vinyl chloride, which is a hard member, the vibration energy of the granular weight member 34 that hits the inner wall of the case 31 is easily canceled. Further, in this vibration reducing device 30, four 31 cases are housed on the inner peripheral surface of the cylindrical storage cylinder 35, and the outer peripheral surface of the storage cylinder 35 is within the gripping portion (handle 94) of the brush cutter. Mounted on the periphery. Therefore, the vibration reduction device 30 can be attached without affecting the outer shape of the brush cutter.

  Next, a vibration reducing apparatus according to Embodiment 4 will be described. In the vibration reduction device of the fourth embodiment, the vibration reduction device 40 is configured by the case 31 and the cap 37 used in the third embodiment. That is, as shown in FIG. 10, a plurality of cases 31 are inserted into the hand grip (handle 95) of the brush cutter, and the movement within the hand grip (handle 95) is restricted by the cap 37, and vibrations are generated. A reduction device 40 is secured to the brush cutter. In this case, the cap 37 is a fixture and a connecting member.

  In the vibration reduction device 40 of the fourth embodiment, since the cap 37 that attaches the plurality of cases 31 to the hand grip (handle 95) of the brush cutter also serves as a connection member, it is not necessary to prepare a separate connection member. Other effects are substantially the same as those of the third embodiment.

  As mentioned above, although the vibration reduction apparatus of this invention was demonstrated according to Embodiment 1-4, this invention is not restrict | limited to these, Unless it is contrary to the technical idea of this invention, it changes suitably and is applied. Needless to say, it can be done. For example, in the first to fourth embodiments, a brush cutter and a chain saw are shown as handheld power tools, but the present invention is not limited to these, and various types of handheld power tools such as a hedge trimmer and an electric drill are included.

  11, 21, 31 ... case, 14, 24, 34 ... granular weight member, 15, 25, 35 ... connecting member, 17, 27, 28, 37 ... fixture (17 ... wire, 27 ... bolt, 28 ... nut, 37 ... cap), 90, 91, 92, 93, 94, 95 ... grip portion (90 ... operating rod, 91, 92, 93, 94, 95 ... handle).

Claims (4)

A case in which the granular weight member is filled so as to vibrate;
A connecting member for connecting a plurality of the cases,
The connecting member is planar or curved,
A plurality of cases are attached to one surface of the connecting member,
The vibration reducing device for a hand-held power tool, wherein the other surface of the connecting member is spirally wound and fixed to the outer periphery of the hand grip portion of the hand-held power tool. A case in which the granular weight member is filled so as to vibrate;
A connecting member for connecting a plurality of the cases,
The connecting member has a cylindrical shape,
A plurality of cases are attached to the inner peripheral surface of the connecting member,
The vibration reducing device for a handheld power tool, wherein the outer peripheral surface of the connecting member is attached to an inner peripheral portion of a hand grip portion of the handheld power tool. The said case consists of a hard member, The vibration reduction apparatus for handheld power tools of Claim 1 or 2 characterized by the above-mentioned. The vibration reducing device for a hand-held power tool according to any one of claims 1 to 3, wherein the case and the connecting member are integrally formed.

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