Antivibration component and apparatus

Abstract

To provide an antivibration component and an apparatus that can suppress deterioration and damage of an elastic member.SOLUTION: An antivibration component includes: a pair of holding members 1, 2; and an elastic member 3 interposed between the pair of holding members 1, 2. One of the pair of holding members 1, 2 includes a first abutment part 13, while the other of the pair of holding members 1, 2 includes a second abutment part 23. Abutment between the first abutment part 13 and the second abutment part 23 regulates elastic deformation of the elastic member 3.SELECTED DRAWING: Figure 6

Description

[Technical field]

[0001] The present invention relates to a vibration isolation component and a device including the vibration isolation component. [Background technology]

[0002] Machines used in various industries and in everyday life generally employ mechanisms that convert energy, such as fuel or electricity, into driving force or other types of energy, or mechanisms that convert a force acting in one direction into a force acting in another direction. These conversion mechanisms often generate vibrations and are considered to be vibration sources in machines. Machine vibration sources include various configurations, such as internal combustion engines, motors, piston mechanisms, and rotating cam mechanisms.

[0003] When a device having such a vibration source is installed at a place of use, it is preferable to suppress the transmission of vibration to the place of use. For the purpose of suppressing such vibration transmission, for example, vibration-proof rubber, which is a type of vibration-proof component, is adopted. Patent Document 1 discloses an example of a conventional vibration-proof rubber. The vibration-proof rubber disclosed in the document includes a pair of flanges and a rubber part provided between the pair of flanges. When vibration from the vibration source is transmitted to one flange, the elastic deformation of the rubber part suppresses the transmission of vibration to the other flange. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2009-8167 A Summary of the Invention [Problem to be solved by the invention]

[0005] When vibrations or forces greater than expected are transmitted to one of the flanges of the vibration-proof rubber in equipment, the rubber part, which is an elastic member, may be significantly deformed. This significant deformation may cause the rubber part to deteriorate excessively or develop cracks, which may result in problems. In addition, excessive misalignment may cause one part of the equipment to collide with another part, resulting in damage.

[0006] The present invention has been devised in light of the above-mentioned circumstances, and an object of the present invention is to provide an anti-vibration component and equipment that are capable of suppressing deterioration and damage to elastic members and damage to the equipment. [Means for solving the problem]

[0007] The vibration-damping component provided by a first aspect of the present invention comprises a pair of retaining members and an elastic member interposed between the pair of retaining members, one of the pair of retaining members having a first abutment portion and the other of the pair of retaining members having a second abutment portion, and elastic deformation of the elastic member is regulated by the abutment between the first abutment portion and the second abutment portion.

[0008] In a preferred embodiment of the present invention, the second abutment portion is a through hole or a recess having a pair of abutment surfaces facing each other across the first abutment portion, and the first abutment portion is a convex portion inserted into the second abutment portion.

[0009] In a preferred embodiment of the present invention, each of the pair of retaining members has an attachment portion to be attached to an object to be vibration-damped and a retaining portion to hold the elastic member, the attachment portions of the pair of retaining members being spaced apart in a first direction, and the retaining portions of the pair of retaining members being spaced apart in a second direction intersecting the first direction.

[0010] The apparatus provided by the second aspect of the present invention comprises an excitation unit including a vibration source, an anti-vibration component provided by the first aspect of the present invention, and a support unit that supports the excitation unit via one or more anti-vibration components. Effect of the Invention

[0011] According to the present invention, deterioration and damage to the elastic member and damage to the device can be suppressed.

[0012] Other features and advantages of the present invention will become more apparent from the following detailed description taken in conjunction with the accompanying drawings. [Brief description of the drawings]

[0013] [Figure 1] 1(a) and 1(b) are perspective views showing a device according to a first embodiment of the present invention. [Diagram 2] 1 is a front view showing a device according to a first embodiment of the present invention. [Diagram 3] FIG. 3 is a cross-sectional view taken along line III-III in FIG. [Figure 4] 1 is a perspective view showing a vibration-proof component according to a first embodiment of the present invention. [Diagram 5] 1A is a plan view of an anti-vibration component according to a first embodiment of the present invention, FIG. 1B is a front view, and FIG. 1C is a side view. [Figure 6] FIG. 6 is a cross-sectional view taken along line VI-VI in FIG. [Figure 7] FIG. 4 is a front view showing a modified example of the vibration-proof component according to the first embodiment of the present invention. [Figure 8] FIG. 1(a) is a cross-sectional view showing an anti-vibration component according to a second embodiment of the present invention, and FIG. 1(b) is a cross-sectional view showing an anti-vibration component according to a third embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0014] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

[0015] The terms "first," "second," and the like in this disclosure are used merely for identification purposes and are not intended to impose any ordering on their objects.

[0016] First Embodiment 1 to 3 show a device according to a first embodiment of the present invention. The device B1 of this embodiment includes a vibration unit 5, a support unit 6, and a vibration-proof part A1. The specific use and structure of the device B1 are not limited in any way. Suitable examples of the device B1 include a generator, a pump, a high-pressure washer, and agricultural equipment. In the illustrated example, the device B1 is a generator.

[0017] The vibration unit 5 has a vibration source 51. The vibration source 51 is, for example, a mechanism for converting energy such as fuel or electricity into driving force or other types of energy in the device B1, or a mechanism for converting a force acting in one direction into a force acting in another direction. Examples of the vibration source 51 include various configurations such as an internal combustion engine such as an engine, a motor, a piston mechanism, and a rotating cam mechanism. When the device B1 is a generator, the vibration source 51 is an engine. The vibration unit 5 may include auxiliary devices, an operating unit, and the like for the engine as the vibration source 51 to function appropriately.

[0018] The support unit 6 is a part that supports the vibration unit 5. There is no particular limitation on the specific configuration of the support unit 6, and it may be configured to support the vibration unit 5 by being interposed between the place of use and the vibration unit 5 when the device B1 is placed or fixed on the place of use. In the illustrated example, the support unit 6 has a structure including a frame made of a metal pipe. The metal pipe has a structure in which a plurality of parts extending in the x-direction, y-direction, and z-direction in the figure are combined. In addition to the frame, the support unit 6 may include various parts for the device B1 to function. In addition, the support unit 6 may include accessories of the vibration source 51, an operation unit, and the like.

[0019] The vibration-proofing part A1 is intended to suppress the transmission of vibration from the vibration-exciting part 5 to the support part 6. There is no limitation on the installation location or number of the vibration-proofing parts A1. The number of the vibration-proofing parts A1 may be one or more. In the illustrated example, the device B1 is provided with four vibration-proofing parts A1. In the cross-sectional view shown in FIG. 3, two vibration-proofing parts A1 are arranged side by side in the y direction in the lower part of the device B1 in the z direction. In addition, the other two vibration-proofing parts A1 are arranged at positions separated in the x direction in the same state as the two vibration-proofing parts A1 shown in FIG. 3.

[0020] 3, a support direction N (to be described later) of the vibration-isolating part A1 is inclined with respect to the x-, y-, and z-directions, and in the illustrated example, the inclination angle is approximately 45°. Moreover, the support directions N of two vibration-isolating parts A1 arranged in the y-direction intersect with each other, and in the illustrated example, are approximately at right angles.

[0021] 4 to 6 show the vibration-proof component A1. The vibration-proof component A1 includes a pair of holding members 1 and 2 and an elastic member 3.

[0022] The pair of holding members 1, 2 each support an elastic member 3. When the vibration-proof component A1 is used in, for example, a device B1, it is attached to an appropriate position of the device B1. There are no limitations on the shape, size, material, etc. of the pair of holding members 1, 2. A preferred example of the material for the pair of holding members 1, 2 is metal, for example.

[0023] The holding member 1 has a holding portion 11 , an attachment portion 12 and a contact portion 13 .

[0024] The holding portion 11 is a portion that holds the elastic member 3, and is in close contact with the elastic member 3. There are no limitations on the specific shape, size, etc. of the holding portion 11. In the illustrated example, the holding portion 11 is rectangular. Moreover, the holding portion 11 in the illustrated example has a planar shape along the x direction, and is inclined with respect to the y direction and the z direction.

[0025] The mounting part 12 is a part that is attached to the device B1. The specific shape, size, etc. of the mounting part 12 are not limited in any way. In the illustrated example, the mounting part 12 is connected to the holding part 11. The mounting part 12 in the illustrated example has a part that is planar along the xy plane and a mounting screw 121. The mounting screw 121 is, for example, a part that is machined to have a male thread. In this embodiment, the mounting part 12 is attached to a part of the vibration part 5. In this attachment, for example, a bolt (not shown) may be screwed into the mounting screw 121. In the device B1, the mounting part 12 is attached to an appropriate position of the vibration part 5 of the device B1.

[0026] The contact portion 13 is a portion that contacts the holding member 2. There are no limitations on the specific shape, size, etc. of the contact portion 13. In the illustrated example, the contact portion 13 is a convex portion that protrudes from the holding portion 11. In this embodiment, the contact portion 13 corresponds to a first contact portion of the present invention.

[0027] The holding member 2 has a holding portion 21, an attachment portion 22 and a contact portion 23.

[0028] The holding portion 21 is a portion that holds the elastic member 3, and is in close contact with the elastic member 3. There are no limitations on the specific shape, size, etc. of the holding portion 21. In the illustrated example, the holding portion 21 is rectangular. Moreover, the holding portion 21 in the illustrated example has a planar shape along the x direction, and is inclined with respect to the y direction and the z direction. A through hole for holding the elastic member 3 may be formed in the holding portion 21.

[0029] The mounting part 22 is a part that is attached to the device B1. The specific shape, size, etc. of the mounting part 22 are not limited in any way. In the illustrated example, the mounting part 22 is connected to the holding part 21. The mounting part 22 in the illustrated example has a part that is planar along the xy plane and a mounting screw 221. The mounting screw 221 is, for example, a part that is machined to have a male thread. In this embodiment, the mounting part 22 is attached to a part of the vibration part 5. In this attachment, for example, a bolt (not shown) may be screwed into the mounting screw 221. In the device B1, the mounting part 22 is attached to an appropriate position of the support part 6 of the device B1.

[0030] The abutment portion 23 is a portion that abuts against the holding member 1. The specific shape, size, etc. of the abutment portion 23 are not limited in any way. In the illustrated example, the abutment portion 23 has a pair of abutment surfaces 231. The pair of abutment surfaces 231 face each other in a support direction N described below. In the illustrated example, the abutment portion 23 is a through hole having the pair of abutment surfaces 231. In this embodiment, the abutment portion 23 corresponds to the second abutment portion of the present invention.

[0031] The abutment portion 13 is inserted into the abutment portion 23. When the elastic member 3 is in a natural length state where no external force is applied to the elastic member 3, the abutment portion 13 does not abut against the pair of abutment surfaces 231 or the holding member 2.

[0032] The elastic member 3 is interposed between the holding member 1 and the holding member 2. The elastic member 3 is intended to suppress the transmission of vibration between the holding member 1 and the holding member 2 by elastically deforming. The specific shape, size, material, etc. of the elastic member 3 are not limited in any way. Examples of the elastic member 3 include a member made of rubber and a spring made of metal. The elastic member 3 may also be configured by combining a plurality of materials. In this embodiment, the elastic member 3 is a member made of rubber.

[0033] The elastic member 3 in this embodiment has a rectangular column shape with its axial direction being the support direction N. The elastic member 3 is sandwiched between the holding portion 11 and the attachment portion 12 in the support direction N. When the elastic member 3 is at its natural length, a gap is set between the abutment portion 13 and the abutment portion 23.

[0034] Next, the functions of the vibration-isolating part A1 and the device B1 will be described.

[0035] First, when vibrations are generated from the vibration source 51 of the vibration unit 5 of the device B1, the vibration unit 5 vibrates relative to the support unit 6. This vibration causes the holding member 1 and the holding member 2 of the vibration-proof component A1 to move relative to each other, deforming the elastic member 3. As the elastic member 3 deforms, even if vibrations are generated from the vibration source 51, the transmission of the vibrations to the support unit 6 is suppressed.

[0036] Next, when the vibration of the vibration source 51 is larger than expected, or when an unintended large force is applied to the vibration unit 5 or the support unit 6, the elastic member 3 may be significantly deformed. In this case, the abutment portion 13 abuts against the abutment portion 23, thereby making it possible to prevent the deformation of the elastic member 3 from exceeding a predetermined amount. This makes it possible to suppress deterioration and damage to the elastic member 3. In addition, it is possible to suppress damage caused by a part of the vibration unit 5 of the device B1 colliding with the support unit 6 due to excessive positional deviation, etc.

[0037] In the vibration-proof component A1, the abutment portion 23 is a through hole having a pair of abutment surfaces 231, and the abutment portion 13 is a convex portion inserted into the abutment portion 23. As a result, when the elastic member 3 is at its natural length, the abutment portion 13 is located between the pair of abutment surfaces 231 with a gap therebetween. This gap can be accurately formed by the thickness of the abutment portion 13 and the size of the abutment portion 23. As a result, when the deformation of the elastic member 3 is within the expected range, the abutment portion 13 and the abutment portion 23 are not brought into contact with each other, whereas when the deformation of the elastic member 3 exceeds the expected range, the abutment portion 13 and the abutment portion 23 (the abutment surfaces 231) are quickly brought into contact with each other, thereby making it possible to avoid excessive deformation of the elastic member 3.

[0038] In addition, since the contact portion 23 is a through hole, the contact portion 13 contacts the contact portion 23 even if the contact portion 13 moves excessively in a direction perpendicular to the support direction N. This is expected to prevent excessive deformation of the elastic member 3 in directions other than the support direction N.

[0039] As shown in FIG. 6, the direction (z direction) in which the mounting portion 12 and the mounting portion 22 are separated from each other and the support direction N intersect with each other. That is, the mounting direction (z direction) of the vibration-proof part A1 to the vibration-exciting part 5 and the support part 6 intersects with the support direction N, and in this embodiment, the angle is approximately 45°. Also, as shown in FIG. 3, of the four vibration-proof parts A1 of the device B1, the two vibration-proof parts A1 arranged apart in the y direction have their respective support directions N intersecting and approximately perpendicular to each other. As a result, the elastic member 3 of the vibration-proof part A1 is deformed whether the vibration source 51 vibrates in the z direction or in the y direction. Therefore, by appropriately deforming the elastic member 3 in response to vibrations in a wider variety of directions, the transmission of vibration from the vibration-exciting part 5 to the support part 6 can be suppressed. Also, when excessive vibration or external force is applied in either the z direction or the y direction, the abutting part 13 and the abutting part 23 can be abutted against each other, and deterioration or damage to the elastic member 3 can be suppressed.

[0040] 7 and 8 show modified examples and other embodiments of the present invention. In these figures, elements that are the same as or similar to those in the above-mentioned embodiment are given the same reference numerals as those in the above-mentioned embodiment. Furthermore, the configurations of the various parts in each modified example and each embodiment can be appropriately combined with each other as long as no technical contradiction occurs.

[0041] <Modification of the first embodiment> 7 shows a modified example of the vibration-proof component A1. The vibration-proof component A11 of this modification is different from the vibration-proof component A1 in the configuration of the abutting portion 23.

[0042] The contact portion 23 of the vibration-proof component A1 is a recess. The contact portion 23 is open to one side in the x direction. In this modification, the contact portion 23 also has a pair of contact surfaces 231.

[0043] This modification can also suppress deterioration and damage to the elastic member 3 and damage to the device B1. As can be understood from this modification, there is no limitation on the specific shape of the contact portion 23. Since the contact portion 23 has a pair of contact surfaces 231 facing each other in the support direction N, it is possible to restrict the displacement of the contact portion 13 in the support direction N and to prevent significant deformation of the elastic member 3.

[0044] <Second embodiment> 8(a) shows an anti-vibration component according to a second embodiment of the present invention. The anti-vibration component A2 of this embodiment differs from the above-described embodiments in the relationship between the direction in which the mounting portion 12 and the mounting portion 22 are separated from each other (z direction) and the support direction N. In this embodiment, the direction in which the mounting portion 12 and the mounting portion 22 are separated from each other (z direction) and the support direction N are approximately the same.

[0045] This embodiment also makes it possible to suppress deterioration or damage to the elastic member 3 and damage to the device B1. As can be understood from this embodiment, the relationship between the direction in which the mounting portion 12 and the mounting portion 22 are separated from each other and the support direction N is not limited in any way.

[0046] <Third embodiment> 8(b) shows an anti-vibration component according to a third embodiment of the present invention. The anti-vibration component A3 of this embodiment differs from the above-described embodiments in the configurations of the contact portions 13 and 23.

[0047] In this embodiment, the contact portion 13 is configured by a through hole or a recess. The contact portion 13 has a pair of contact surfaces 131. The pair of contact surfaces 131 face each other in the support direction N. In this embodiment, the contact portion 13 corresponds to a second contact portion of the present invention.

[0048] The contact portion 23 is inserted through the contact portion 13 and is a protrusion that protrudes from the holding portion 21. In this embodiment, the contact portion 23 corresponds to a first contact portion of the present invention.

[0049] Even in this embodiment, when the vibration of the vibration source 51 is larger than expected or when an unintended large force is applied to the vibration unit 5 or the support unit 6, the abutment portion 13 and the abutment portion 23 abut against each other, thereby making it possible to avoid excessive deformation of the elastic member 3. As can be understood from this embodiment, the configurations of the abutment portion 13 and the abutment portion 23 are not limited in any way as long as they are capable of suppressing deterioration or damage to the elastic member 3 and damage to the device B1.

[0050] The anti-vibration component and device according to the present invention are not limited to the above-mentioned embodiment. The specific configurations of the respective parts of the anti-vibration component and device according to the present invention can be freely designed in various ways. [Explanation of symbols]

[0051] A1, A11, A2, A3: Anti-vibration parts B1:Equipment 1, 2: Holding member 3: Elastic material 5: Vibration section 6: Support part 11: Holding part 12: Mounting part 13: Contact part 21: Holding part 22: Mounting part 23: Contact part 51: Vibration source 121, 221: Mounting screw 131,231: Contact surface N: Support direction

Claims

1. A pair of holding members; an elastic member interposed between the pair of holding members, One of the pair of holding members has a first contact portion, The other of the pair of holding members has a second abutment portion, A vibration-proof component, in which the first abutment portion and the second abutment portion abut against each other, thereby restricting elastic deformation of the elastic member.

2. the second contact portion is a through hole or a recess having a pair of contact surfaces opposed to each other with the first contact portion therebetween, The vibration-isolating component according to claim 1 , wherein the first contact portion is a protrusion inserted into the second contact portion.

3. Each of the pair of holding members has an attachment portion that is attached to an object to be vibration-proofed and a holding portion that holds the elastic member, The mounting portions of the pair of holding members are spaced apart in a first direction, The vibration-isolating component according to claim 1 , wherein the holding portions of the pair of holding members are spaced apart in a second direction intersecting the first direction.

4. A vibration unit including a vibration source; One or more vibration-isolating components according to any one of claims 1 to 3; A support portion that supports the vibration excitation portion via the one or more vibration isolation parts.

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