Vibration-isolating member fixing structure and vibration-isolating member

Abstract

To provide a vibration isolation member which can simplify attachment work, and can reduce the number of part items.SOLUTION: A vibration isolation member has a plate-shaped vibration absorption part for absorbing vibration, one or plurality of first protrusions protruding from one main face of the vibration absorption part, and integrally molded to the vibration absorption part by an elastic body, and one or plurality of second protrusions protruding from the other main face of the vibration absorption part, and integrally molded to the vibration absorption body by the elastic body. Each of the first and second protrusions has a shaft part extending from the main face of the vibration absorption part, and an engagement head part which is formed at a tip of the head part.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a vibration-isolating member fixing structure and a vibration-isolating member. [Background technology]

[0002] As a vibration-proof fixing structure for a sign pole placed outdoors, a pole fixing structure in which a double nut is screwed and fastened to an anchor bolt is known, and a vibration absorbing plate is interposed between the base and the pedestal (see Patent Document 1). Another vibration-proof structure known is one in which a vibration-proof member is interposed and fixed with a bolt and double nuts to prevent vibration in the positioner of a valve control device (see Patent Document 2). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2001-073329 A [Patent Document 2] JP 2018-159451 A Summary of the Invention [Problem to be solved by the invention]

[0004] For example, there is a demand for a vibration-isolating member fixing structure that is used in devices that need to eliminate noise caused by vibrations, such as electronic devices that detect sound pickup characteristics, and that can be used in detachable devices. However, in the past, vibration-isolating members were fixed with bolts and nuts, so there were problems such as a need to secure space for tools to turn the bolts and nuts, the worker needs to have knowledge of fastening methods, the number of parts is large, and installation takes time.

[0005] The present invention has been made in consideration of the above-mentioned problems with the conventional technology, and has an object to provide a vibration-isolating member fixing structure and a vibration-isolating member that can simplify the installation work and reduce the number of parts. [Means for solving the problem]

[0006] The vibration-proof member fixing structure of the present invention is a vibration-proof member fixing structure including a vibration-proof member sandwiched between main surfaces of a first plate portion and a second plate portion and fixing the first plate portion and the second plate portion, the vibration-proof member having a plate-shaped vibration absorbing portion that absorbs vibrations, one or more first protrusions protruding from one main surface of the vibration absorbing portion and integrally formed with the vibration absorbing portion by an elastic body, and one or more second protrusions protruding from the other main surface of the vibration absorbing portion and integrally formed with the vibration absorbing portion by the elastic body, each of the first and second protrusions extending from the main surface of the vibration absorbing portion. and an engagement head formed at a tip of the shaft, the first plate portion having an inner peripheral edge portion at a position facing the first protrusion portion, which elastically deforms the shaft portion when the head of the first protrusion portion is inserted therethrough, and a first insertion hole in which the inner peripheral edge portion engages with at least a part of the outer peripheral edge portion of the head after the insertion, and the second plate portion having an inner peripheral edge portion at a position facing the second protrusion portion, which elastically deforms the shaft portion when the head of the second protrusion portion is inserted therethrough, and a second insertion hole in which the inner peripheral edge portion engages with at least a part of the outer peripheral edge portion of the head after the insertion. death, the head portion of the first protrusion has a regular polygonal truncated pyramid shape including a plurality of tapered surfaces tapered in an extension direction of the shaft portion and a seat surface facing a main surface of the vibration absorbing portion, the portion of the outer circumferential edge of the head portion is an end portion of a ridge between adjacent ones of the tapered surfaces, the first insertion hole of the first plate portion has a regular polygonal shape that allows the head of the first protruding portion to pass through the first insertion hole when the head of the opposing first protruding portion deforms the first protruding portion so as to twist the shaft portion of the first protruding portion; An engagement portion for engaging a jig that rotates the head of the first protrusion about the shaft portion with the head is formed on the head of the first protrusion. It is characterized by:

[0007] The vibration-proof member of the present invention has a plate-shaped vibration absorbing part that absorbs vibrations, one or more first protrusions that protrude from one main surface of the vibration absorbing part and are integrally formed with the vibration absorbing part by an elastic body, and one or more second protrusions that protrude from the other main surface of the vibration absorbing part and are integrally formed with the vibration absorbing part by the elastic body, each of the first and second protrusions having a shaft portion that extends from the main surface of the vibration absorbing part and an engagement head portion formed at the tip of the shaft portion. The head of at least one of the first and second protrusions has a regular polygonal truncated pyramid shape having a plurality of tapered surfaces tapered in the extension direction of the shaft portion and a seat surface facing the main surface of the vibration absorbing portion. It is characterized by: Effect of the Invention

[0008] According to the present invention, it is possible to realize a vibration-isolating member and a fixing structure thereof that can simplify the installation work and reduce the number of parts by integrally molding the protrusion, which is the engagement portion attached to the vibration-isolating member. [Brief description of the drawings]

[0009] [Figure 1] 1 is a schematic partially exploded perspective view showing a vibration-proof member fixing structure according to a first embodiment of the present invention. [Diagram 2] 1 is a schematic partially exploded side view showing a vibration-proof member fixing structure of a first embodiment. FIG. [Diagram 3] This is a group of top views showing a schematic partial top view of a housing having a first plate portion of the vibration-proof member fixing structure of the first embodiment, a schematic partial top view of a vibration-proof member made of a plate-shaped vibration-proof rubber, and a schematic partial top view of a base having a second plate portion, together with the relative positions of the various parts of the housing, the vibration-proof member, and the base. [Figure 4] 1 is a schematic partial perspective view showing a vibration-isolating member fixing structure of the present embodiment in which a vibration-isolating member is sandwiched between a base and a housing of the first embodiment and is tightly attached and integrated therebetween; FIG. [Diagram 5] 5 is a schematic cross-sectional view of the vibration-proof member fixing structure taken along line BB shown in FIG. 4. [Figure 6] 2 is a schematic cross-sectional view of the vibration-isolating member taken along line AA shown in FIG. [Figure 7] 7(a) and 7(c) are schematic side views illustrating the operation of the vibration-proof member fixing structure of the first embodiment, and FIG. 7(b) is a schematic top view illustrating the operation of the vibration-proof member fixing structure of the first embodiment. [Figure 8] 10 is a schematic partially exploded side view showing a vibration-proof member fixing structure according to a second embodiment of the present invention. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] Hereinafter, a fixing structure for a housing of an electronic device or the like according to an embodiment of the present invention will be described in detail with reference to the drawings. In the embodiments, components having substantially the same functions and configurations are designated by the same reference numerals and will not be described repeatedly. EXAMPLES

[0011] (Configuration Description) Fig. 1 shows a schematic partial exploded perspective view of a vibration-isolating member fixing structure of a first embodiment of the present invention. Fig. 2 shows a schematic partial exploded side view of the vibration-isolating member fixing structure of this embodiment. Fig. 3 is a group of top views showing a schematic partial top view of a housing (hereinafter simply referred to as housing 1) having a first plate portion 1 of the vibration-isolating member fixing structure of this embodiment in a part thereof, a schematic partial top view of a vibration-isolating member 2 made of a plate-shaped vibration-isolating rubber, and a schematic partial top view of a base (hereinafter simply referred to as base 3) having a second plate portion in a part thereof, together with the positional relationship of each part of the housing 1, the vibration-isolating member 2, and the base 3.

[0012] The vibration-isolating member fixing structure of this embodiment is a structure in which a housing 1 is fixed to a base 3 via a vibration-isolating member 2 made of a plate-shaped vibration-isolating rubber or the like. The housing 1, the vibration-isolating member 2, and the base 3 are configured such that first and second engagement protrusions 21, 22 of the vibration-isolating member 2 are coaxially fitted into a first engagement insertion hole 1f formed in the housing 1 and a second engagement insertion hole 3g formed in the base 3, respectively, and their main surfaces are tightly attached to each other to form an integrated unit.

[0013] Fig. 4 is a schematic partial perspective view showing the vibration-isolating member fixing structure of this embodiment in which the vibration-isolating member 2 is sandwiched between the base 3 and the housing 1 and is tightly and integrally formed. Fig. 5 is a schematic cross-sectional view taken along line BB of the vibration-isolating member fixing structure shown in Fig. 4. In this tightly and integral state, if the base 3 is a structure fixed on a road, for example, and the housing 1 is an electronic device such as a sound collector, the vibration to the housing 1 from the road can be attenuated to a certain extent by the vibration-isolating member 2.

[0014] (Vibration-proofing material) Fig. 6 is a schematic cross-sectional view of the vibration-proof member 2 taken along line AA in Fig. 1. A schematic partial perspective view of the vibration-proof member fixing structure of this embodiment is shown. The vibration-proof member 2 has a plate-shaped vibration-absorbing part 20 that absorbs vibrations, and first and second engagement protrusions 21, 22 that protrude coaxially from both main surfaces of the vibration-absorbing part 20, which are integrally molded from an elastic body. The first and second protrusions 21, 22 each consist of a cylindrical shaft 21a, 22a extending perpendicularly to the main surface of the vibration-proof part 20, and an engagement head 21b, 22b provided at the tip of each shaft.

[0015] A first protrusion 21 is formed coaxially on one side of the vibration-proof member 2, and a second protrusion 22 is formed coaxially on the opposite side. The first protrusion 21 is structured to fit into a first insertion hole 1f formed in the housing 1, and the second protrusion 22 is structured to fit into a second insertion hole 3g formed in the base 3.

[0016] The head 21b of the first protrusion 21 has a square truncated pyramid shape, and includes a seat surface 21c facing the main surface of the vibration absorbing part 20 extending from the shaft part 21a, four flat tapered surfaces 21d tapering from the seat surface 21c toward the tip extension direction of the shaft part 21a, a square top surface 21e at the tip, and a slit 21f provided therein (see FIG. 3(b)). That is, the first protrusion 21 of the vibration-proof member 2 has a truncated pyramid-shaped head 21b, which is a regular square trapezoid, at the tip, and a slit 21f is formed in the top surface 21e of the truncated pyramid-shaped head 21b (see FIG. 2). The slit 21f is an engagement part that engages the head 21b with a tool such as a flathead screwdriver that rotates the head 21b of the first protrusion 21 around the shaft part 21a.

[0017] As shown in Figures 2(a)(b) and 3(a)(b), the truncated pyramidal head 21b has an end portion RDP of the ridge line RD between adjacent tapered surfaces of the tapered surface 21d, which is part of its rectangular outer peripheral edge, as a stopper.

[0018] The head 22b of the second protrusion 22 has a truncated cone shape and includes a bearing surface 22c facing the main surface of the vibration absorbing part 20 extending from the shaft part 22a, a conical tapered surface 22d tapering from the bearing surface 22c in the extension direction of the shaft part 22a, and a circular top surface 22e at the most distal end. That is, the second protrusion 22 includes a truncated cone-shaped head 22b at the tip, which is a truncated cone-shaped return shape.

[0019] (Housing) The housing 1 is formed with a first insertion hole 1f of a regular square opening at the same position as the first protrusion 21 of the vibration-proof member 2. The first insertion hole 1f is formed with its regular square shape being the same shape and size as the seat 21c of the truncated pyramid-shaped head 21b, and is oriented at an angle of 45° around the center line of the shaft 21a with respect to the seat 21c (see FIG. 4). Note that in this example, the regular square shape of the first insertion hole 1f of the regular square opening of the housing 1 and the regular square truncated pyramid-shaped head 21b of the vibration-proof member 2 are used, but these parts may each be a regular polygonal truncated pyramid shape such as an equilateral triangle or a regular pentagon.

[0020] As shown in Figures 2(a)(b) and 3(a)(b), the first insertion hole 1f has an inner peripheral edge 1e that, when the head 21b is inserted into a position opposite the first protrusion 21, is guided by the ridge line RD between adjacent tapered surfaces and the tapered surfaces, and elastically deforms (twists) the shaft portion 22a of the head 21b, and is configured to engage with a portion RDP of the outer peripheral edge portion of the head 21b when the elastic deformation of the inner peripheral edge 1e returns after insertion.

[0021] Furthermore, since the first insertion hole 1f of the housing 1 is an opening of the same square shape and size as the seat surface 21c of the truncated pyramidal head 21b, when the head 21b of the opposing first protrusion 21 elastically deforms the first protrusion 21 so as to twist the shaft 21a of the first protrusion 21, the head 21b of the first protrusion 21 can pass through the first insertion hole 1f.

[0022] (base) A second insertion hole 3g is formed in the base 3 at the same position as the second protrusion 22 of the vibration-proof member 2. The second insertion hole 3g is a stepped through hole as shown in Fig. 2(c). As shown in Figs. 2(b) and 2(c), the second insertion hole 3g is formed such that the shape of a first step 3g1 on the side where the truncated cone-shaped head 22b is inserted is similar to the seating surface 22c of the truncated cone-shaped head 22b and has an inner diameter smaller than that of the seating surface 22c, so that the circumferential portion of the conical tapered surface 22d can pass through due to elastic deformation and the seating surface 22c can engage with the first step 3g1 after passing through, and the shape of the second step 3g2 is formed as a circular hole with an inner diameter larger than that of the first step 3g1. The second insertion hole 3g has an inner peripheral edge portion 3e that elastically deforms the outer peripheral edge portion RDP of the head 22b of the second protrusion 22 when the head 22b of the second protrusion 22 is inserted at a position opposite the second protrusion 22, and is configured so that the inner peripheral edge portion 3e engages with the outer peripheral edge portion RDP of the head 22b after insertion.

[0023] The dimensional relationship between the first protrusion 21 of the vibration-damping member 2 and the first insertion hole 1f of the housing 1 for the fitting portion between the housing 1, the vibration-damping member 2, and the base 3 is set as shown in Figure 3, as x (diagonal length of the seating surface of the square head 21b of the first protrusion 21) > u (length of one side of the rectangle of the first insertion hole 1f of the housing 1) = z (length of one side of the seating surface of the head 21b of the first protrusion 21) > y (diagonal length of the square top surface 21e of the head 21b of the first protrusion 21). The dimensional relationship between the second protrusion 22 of the vibration-damping member 2 and the second insertion hole 3g of the base 3 is set as follows, as shown in Figure 2: s (inner diameter of the second step 3g2 of the base 3) > w (outer diameter of the seating surface of the head 22b of the vibration-damping member 2) > t (inner diameter of the first step 3g1 of the base 3) > v (diameter of the circular top surface 22e of the head 22b of the vibration-damping member 2).

[0024] (Explanation of operation) When attaching the vibration-proof member 2, when the first protrusion 21 of the vibration-proof member 2 is pressed into the first insertion hole 1f of the housing 1, the head 21b of the first protrusion 21 enters the first insertion hole 1f while twisting due to elastic deformation around the shaft 21a, guided by the ridge line RD between adjacent tapered surfaces of the tapered surface 21d and the tapered surface. Similarly, when the second protrusion 22 of the vibration-proof member 2 is pressed into the second insertion hole 3g of the base 3, the conical tapered surface 22d serves as a guide, and the second protrusion 22 enters the second insertion hole 3g while elastically deforming, resulting in the fixed state shown in FIG.

[0025] When removing the housing 1 from the vibration-proof member 2, as shown in Fig. 7(a), a flathead screwdriver or the like is inserted into the slit 21f of the head 21b of the first protrusion 21 of the vibration-proof member 2, and the head 21b of the first protrusion 21 is rotated 45° to align with the first insertion hole 1f of the housing 1. Then, with the head 21b aligned with the first insertion hole 1f as shown in Fig. 7(b), the head 21b of the first protrusion 21 is pushed into the first insertion hole 1f as shown in Fig. 7(c).

[0026] As described above, according to this embodiment, when installing the vibration-proof member 2, the protruding parts of the vibration-proof member 2 are simply pushed by hand into the respective holes in the housing 1 and the base 3, which has the advantages of eliminating the need for tools, eliminating the need for special knowledge on the part of the worker, reducing the number of parts, and shortening the installation time.

[0027] When fixing the vibration-proof member 2 to the housing 1, the head 21b at the tip of the first protrusion 21 of the vibration-proof member 2 is made into a truncated pyramid shape, so that when the first protrusion 21 enters the first insertion hole 1f, the tapered surface 21d acts as a guide and the truncated pyramid-shaped head 21b of the first protrusion 21 acts as a stopper to fix the first protrusion 21 in place.

[0028] When removing the vibration-proof member 2, the first protrusion 21 can be rotated with a flat-head screwdriver or the like using the slit 21f in the first protrusion 21 to release the stopper on the truncated pyramidal head 21b and push it in to remove it. In this way, since it is only necessary to push it in with a flat-head screwdriver, there are effects such as fewer tools being used and shorter work time. EXAMPLES

[0029] The second embodiment is identical to the first embodiment except that a truncated pyramidal head structure similar to that of the first protrusion 21 of the vibration-damping member 2 of the first embodiment is provided as the second protrusion instead of a truncated conical head 22b.

[0030] In this embodiment, as shown in FIG. 8, the head 222b of the second protrusion 222 has a regular polygonal truncated pyramid shape having four tapered surfaces 222d that taper in the extension direction of the shaft 222a and a seat surface 222c facing the main surface of the vibration absorbing part 20.

[0031] A part of the outer circumferential edge of the head 222b of the second protrusion 222 is an end portion RDP of the ridge line RD between adjacent tapered surfaces of the tapered surface 222d.

[0032] The second insertion hole 32g of the base 32 has a regular polygonal shape that allows the head 222b of the opposing second protrusion 222 to pass through the second insertion hole 32g when the head 222b of the second protrusion 222 deforms the second protrusion 222 so as to twist the shaft 222a of the second protrusion 222.

[0033] The head 222b of the second protrusion 222 has a slit 222f for engaging with a driver of a jig that rotates the head 222b of the second protrusion 222 about the shaft 222a.

[0034] (Modification) In either embodiment, the first protrusion 21 and the second protrusion 22 may be formed non-coaxially.

[0035] Furthermore, in any of the embodiments, examples of the hard rubber material of the vibration-proof member 2 include resins such as hydrogenated nitrile rubber, fluororubber (FKM), silicone rubber (VMQ), ethylene propylene rubber (EPDM), urethane rubber (U), polyamide (PA), polyethylene (PE), polyacetal (POM), and natural rubber. It may also be in the form of

[0036] In addition, in all the embodiments, the vibration absorbing portion and the protruding portion are integrally formed from the same rubber, but the present invention is not limited to this, and the vibration absorbing portion may be molded from a relatively soft rubber layer, and the shaft portion and the head portion may be integrally formed by two-color molding from a harder rubber than the vibration absorbing portion. In this case, all may be integrally molded by two-color molding, or after molding each, they may be joined by vulcanization joining or the like to integrally mold the vibration absorbing portion and the protruding portion. [Explanation of symbols]

[0037] 1 Housing (first plate portion) 1f First insertion hole 3 Base (second plate part) 3g Second insertion hole 2. Vibration-proofing material 20 Vibration absorber 21 First protrusion 21a, 22a shaft part 21b truncated pyramid head 21c, 22c seat 21d Flat tapered surface 21e, 22e top surface 21f Slit 22 Second protrusion 22b Cone shape 22d Conical tapered surface

Claims

1. A vibration-isolating member fixing structure including a vibration-isolating member sandwiched between main surfaces of a first plate portion and a second plate portion to fix the first plate portion and the second plate portion, The vibration-isolating member is A plate-shaped vibration absorbing part that absorbs vibrations; one or more first protrusions protruding from one main surface of the vibration absorbing portion and integrally formed with the vibration absorbing portion by an elastic body; one or more second protrusions protruding from the other main surface of the vibration absorbing portion and integrally formed with the vibration absorbing portion by the elastic body; Each of the first and second protrusions has a shaft portion extending from a main surface of the vibration absorber and an engagement head portion formed at a tip of the shaft portion, the first plate portion has an inner peripheral edge portion at a position facing the first protruding portion, which elastically deforms the shaft portion when the head of the first protruding portion is inserted therethrough, and a first insertion hole in which the inner peripheral edge portion engages with at least a part of an outer peripheral edge portion of the head after the insertion; the second plate portion has an inner peripheral edge portion at a position facing the second protruding portion, which elastically deforms the shaft portion when the head of the second protruding portion is inserted therethrough, and a second insertion hole in which the inner peripheral edge portion engages with at least a part of the outer peripheral edge portion of the head after the insertion; the head portion of the first protrusion has a regular polygonal truncated pyramid shape including a plurality of tapered surfaces tapered in an extension direction of the shaft portion and a seat surface facing a main surface of the vibration absorbing portion, the portion of the outer circumferential edge of the head portion is an end portion of a ridge between adjacent ones of the tapered surfaces, the first insertion hole of the first plate portion has a regular polygonal shape that allows the head of the first protruding portion to pass through the first insertion hole when the head of the opposing first protruding portion deforms the first protruding portion so as to twist the shaft portion of the first protruding portion, A vibration-proof member fixing structure, characterized in that an engagement portion is formed on the head of the first protrusion, which engages with a jig that rotates the head of the first protrusion around the shaft portion.

2. the head portion of the second protrusion has a truncated cone shape including a conical tapered surface tapered in an extension direction of the shaft portion and a seat surface facing a main surface of the vibration absorbing portion, The vibration-proof member fixing structure according to claim 1, characterized in that the second insertion hole of the second plate portion has a circular shape that allows the head of the second protrusion portion to pass through the second insertion hole while elastically deforming.

3. the head portion of the second protrusion has a regular polygonal truncated pyramid shape including a plurality of tapered surfaces tapered in an extension direction of the shaft portion and a seat surface facing a main surface of the vibration absorbing portion, the second insertion hole of the second plate portion has a regular polygonal shape that allows the head of the second protruding portion to pass through the second insertion hole when the head of the opposing second protruding portion deforms the second protruding portion so as to twist the shaft portion of the second protruding portion, The vibration-proof member fixing structure according to claim 1, characterized in that an engagement portion is formed on the head of the second protrusion for engaging with the head of a jig that rotates the head of the second protrusion around the shaft portion.

4. 4. The vibration-proof member fixing structure according to claim 1, wherein the first and second protrusions are coaxially formed.

5. 4. The vibration-proof member fixing structure according to claim 1, wherein the first and second protrusions are formed non-coaxially.

6. A plate-shaped vibration absorbing part that absorbs vibrations; one or more first protrusions protruding from one main surface of the vibration absorbing portion and integrally formed with the vibration absorbing portion by an elastic body; one or more second protrusions protruding from the other main surface of the vibration absorbing portion and integrally formed with the vibration absorbing portion by the elastic body; Each of the first and second protrusions has a shaft portion extending from a main surface of the vibration absorber and an engagement head portion formed at a tip of the shaft portion, A vibration-damping member characterized in that the head of at least one of the first and second protrusions has a regular polygonal truncated pyramid shape having a plurality of tapered surfaces that taper in the extension direction of the shaft portion and has a seat surface facing the main surface of the vibration-absorbing portion.

7. The vibration-damping member according to claim 6, characterized in that an engagement portion is formed on the head of the regular polygonal truncated pyramid shape, which engages a jig that rotates the head of the regular polygonal truncated pyramid shape around the axis portion.

8. 8. The vibration-isolating member according to claim 6, wherein the first and second protrusions are coaxially formed.

9. 8. The vibration-isolating member according to claim 6, wherein one of the first protrusions and one of the second protrusions are formed non-coaxially.

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