JP5550512B2 - Anti-vibration mount - Google Patents

Description

  The present invention relates to an anti-vibration mount for preventing mechanical vibration and for supporting an anti-vibration body such as a stepping motor on an attachment body such as a housing.

  Various types of OA equipment, for example, facsimiles, printer copies, etc., in which a vibrating body such as a stepping motor is fixedly connected to a support such as a casing provided with an electronic circuit or electronic equipment with screws or the like.

  Specifically, an anti-vibration mount is known in which an elastic material such as rubber is used as the anti-vibration material, and a certain amount of strength is imparted to the skeletal structure by interposing a metal plate (for example, Patent Documents 1 and 2).

Further, as shown in FIGS. 8 and 9, two diamond-shaped metal plates b ₁ and b ₂ having an opening in the central hole a are displaced by 90 degrees, and between the plates b ₁ and b ₂ An anti-vibration mount S in which an elastic body R is interposed and fixed integrally with an adhesive is also known. This anti-vibration mount S is attached to a vibration body A such as a motor and its attachment body B via a fastener U through an attachment hole T formed in each of the plates b ₁ and b ₂ with an anti-vibration effect.

JP 2003-232403 A JP 2003-232404 A

  In the above-described prior art, Patent Document 1 has a single metal plate, and the mounting to one vibrating body through the mounting hole of the metal plate is ensured by screwing with a screw or the like. It can be fixed, but the other mounting body is made by fitting the protruding part of the elastic body fixed to the metal plate, and there is a problem in the stability of fixing, and the thickness of the elastic body is strong. We must admit that a thin structure is impossible to secure.

  Moreover, in patent document 2, since the metal plate has adopted the fitting and fixing method with respect to the elastic body, it has a half-divided structure and must be composed of four pieces of four parts. The elastic body itself also has a problem that it cannot be made thin to maintain strength.

  Further, in the current product shown in FIGS. 8 and 9, two metal plates are required, and an elastic body is interposed between them, so that there is a problem that the entire product must be formed thick.

  An elastic body that holds the tightening screw in the mounting hole with respect to the tightening screw that is fixed to the vibrating body via the elastic body is not considered at all.

  The present invention has been made paying attention to the above points, and the metal plate only needs to be a single material, and the elastic body for vibration isolation only needs to partially cover a part of the plate. The size of the metal plate can be saved as much as possible, the amount of elastic body used can be reduced, and the whole body can be made thin by providing an elastic body for vibration isolation on the inner periphery of mounting holes such as fastening screws. An object of the present invention is to provide an anti-vibration mount.

  The present invention can solve the above problems by including the following configuration.

  (1) A protrusion having a center hole and having a pair of mounting holes protruding through a step in the left-right direction of the center hole is provided for a protrusion having a pair of mounting holes protruding in the vertical direction. Of the single hard plate, the pair of protrusions protruding in the left-right direction are covered with an elastic body that independently and independently covers the front and back surfaces including the inner periphery of the mounting hole. Anti-vibration mount featuring.

  (2) A protrusion having a center hole and having a pair of mounting holes protruding through a step in the left-right direction of the center hole is provided for a protrusion having a pair of mounting holes protruding in the vertical direction. Further, among the single hard plate, the pair of protrusions protruding in the left-right direction are covered with an elastic body that continuously covers the outer peripheral surface including the inner periphery of the mounting hole. Shaking mount.

  (3) The anti-vibration device according to (1) or (2), wherein the projecting portion is formed in a mountain shape that becomes narrower as it goes further, and an attachment hole is provided near the tip of the mountain shape. mount.

  (4) The elastic body is one of rubber and plastic, and the abutting portion of the mounting bracket that covers the inner periphery of the mounting hole is locally thicker than the other portions. The anti-vibration mount according to (1) or (2), wherein:

  (5) The pair of protrusions protruding in the left-right direction can be fixed to a vibration body such as a motor via an elastic body via a mounting hole, and the pair of protrusions protruding in the vertical direction is attached to the vibration body. The anti-vibration mount according to (1) or (2), wherein the anti-vibration mount can be fixed to a body via an attachment hole.

  According to the present invention, a single hard plate made of metal or the like has a two-stage configuration of a pair of vertical projections and a pair of horizontal projections through a step, and a pair of horizontal projections Since an anti-vibration elastic body is attached to at least the front and back surfaces, the entire body can be formed thin, and the inner periphery of the mounting hole provided in the protruding portion covering the elastic body is covered with the elastic body. Since the cover mounting hole is formed, the vibration-proof characteristic can be changed by changing the compression amount of the elastic body by tightening and fixing screws or the like.

  In particular, the abutting and tightening location of a fastening bracket such as a screw on the elastic body covered with the mounting hole is locally thicker than other locations, so it is smaller than other thin locations. The rubber thickness of the screw head contact portion can be increased to improve the vibration isolation characteristics.

A hard metal plate made of a single material, and A showing a case where no peripheral edge of the central hole is provided, and B showing a case where it is provided. When not provided, (Aa) is a plan view, (Ab) is a central cross-sectional view, and when provided, (Ba) is a plan view, (Bb) is a cross-sectional view taken along line 1b-1b, and (Bc) is 1c- 1c line sectional view, (Bd) is a 1b-O-1c line sectional view An example of the vibration isolating mount according to the present invention is shown in the case where no protrusion is provided in the central hole of the metal plate, (a) is a plan view, (b) is a sectional view taken along line 2b-2b, (C) is a bottom view FIG. 6 shows one embodiment of the vibration isolating mount of another example according to the present invention, where a protrusion is provided in the central hole of a metal plate, (a) is a plan view, and (b) is a line 3b-3b. Sectional view, (c) is a sectional view taken along line 3c-3c, (d) is a sectional view taken along line 3b-O-3c, and (e) is a bottom view. (A) (b) is a side view of two kinds of usage states showing a state in which the anti-vibration mount according to the present invention is mounted on a stepping motor and an attachment body. (A) (b) is an expanded sectional view which shows two types of structures of the X part which shows a fastening state with the stepping motor by which the elastic body of FIG. 4 is attached. Two enlarged sectional views showing other examples of the X portion in FIGS. 5 (a) and 5 (b) 4 is an enlarged cross-sectional view of a Y portion showing a tightening state with a mounting body to which the plate of FIG. 4 is directly attached. Sectional view of the conventional example showing the current anti-vibration mount Sectional drawing which shows the connection state of the stepping motor and attachment body of the vibration proof mount of FIG.

  An embodiment of the present invention will be described below with reference to the drawings.

  In the drawings, reference numeral 1 denotes a plate as a skeleton material made of a hard material such as a metal or a hard synthetic resin, which is a skeleton of the vibration-proof mount M, and a pair of protrusions protruding in the vertical direction in one direction around the central hole 2. 3 and 3 and a pair of projecting portions 5 and 5 projecting in the left and right directions in the other direction through the steps 4 and 4 having a height h around the center hole 2. Here, the height h of the step 4 indicates the difference in height between the surfaces of the protrusions 3 and 3 and the surfaces of the protrusions 5 and 5. In addition, it may not be provided in the periphery of the center hole 2 along the periphery.

  The protrusions 3, 3, 5, and 5 form a mountain shape that narrows toward the front, and have attachment holes 6, 6, 6, and 6, respectively. Reference numeral 7 denotes an elastic body such as rubber or plastic having an anti-vibration effect, and whether the front surface 5a and the back surface 5b of the protruding portions 5 and 5 protruding in the left-right direction are independently separated and partially covered (see FIG. 2), and the entire surface 5a and back surface 5b are continuously covered (see FIG. 3), and are covered over the inner circumferences of the mounting holes 6 and 6, so that the covering mounting holes 6x and 6x can be formed. .

  Therefore, the surfaces of the pair of protrusions 3 and 3 in the vertical direction are formed on the same plane with the structure of the plate 1 itself, and the back surfaces of the pair of protrusions 5 and 5 in the left and right direction are attached to the mounting holes 6 and 6. Is formed on the same plane with the elastic body 7 that is partially covered around the center or the entire area.

  Furthermore, when the elastic body 7 shown in FIG. 2 is provided independently on the front surface 5a and the back surface 5b of the protrusions 5 and 5, it is formed leaving the periphery of the protrusions 5 and 5, but as shown in FIG. It is also possible to form the film over the entire area by expanding to the periphery.

  In the drawing, the projecting directions of the pair of projecting portions 3 and 3 and the other pair of projecting portions 5 and 5 are specified as the up and down direction and the left and right direction, but both directions are simply expressions for indicating the crossing situation. In addition, not only the case where the directions are opposite to each other but also the case where the projecting directions of both intersect each other in any direction.

  In the above-described configuration, a usage example of the vibration proof mount M will be described with reference to FIGS.

First, the pair of projecting portions 5 and 5 covered with the elastic body 7 is connected to one side of the vibrating body A such as a stepping motor, that is, the rotation axis a ₁ in the central hole 2 via the elastic body 7. In the state of being inserted into the two, the two mounting screws P, P are inserted into the two covering mounting holes 6x, 6x by contacting the elastic body 7 covered with one of the pair of protrusions 5,5. It is pressed from the surface of the elastic body 7 and fastened and fixed. That is, the mounting screws P, P are fixed to the vibrating body A with the elastic body 7 interposed therebetween.

  Next, the other pair of hard metal projections 3 and 3 of the vibration-proof mount M to which the vibration body A is fixed and fixed are brought into contact with the attachment body B which is a casing of various devices, and two attachment screws are attached. Q and Q can be fastened and fixed through the mounting holes 6 and 6.

In this case, the mounting screws P that are screwed into the screw holes of the vibrating body A inserted through the covering mounting holes 6x and 6x of the mounting holes 6 and 6 on the protruding portions 5 and 5 that are in contact with the vibrating body A, Care must be taken so that the heads P ₁ and P ₁ of P do not come into contact with the lower surface of the other mounting body B.

Where e: thickness of the elastic body 7 covering the plate 1
f: the thickness of the head P ₁ of the mounting screw P; h: the size of the step 4;
It is necessary to have the following relationships including:
h−e ≧ f

  Thus, various electronic components, devices, and the like are incorporated in the attachment body B, and the device can be obtained as a whole.

  Rotational vibration based on the operation of the stepping motor as the vibrating body A is transmitted and absorbed by the elastic body 7 in contact with the vibration phenomenon generated from the entire stepping motor, but through the covering mounting holes 6x and 6x. The inserted mounting screws P and P are transmitted to the elastic body 7 provided on the inner periphery of the mounting holes 6 and 6 and can be similarly absorbed and attenuated.

More specifically, the vibration and deviation of the stepping motor can be prevented from vibration by the elastic body 7 in contact with the rotation axis a ₁ in the direction parallel to the rotation axis a ₁ , or with the mounting screws P and P in the direction perpendicular to the rotation axis a _1. it is possible vibration-proof by the elastic body 7 formed on the inner periphery of the hole 6, 6, the rotational direction of the rotary shaft a ₁ can be prevented by fixing the plate 1 of the single piece of metal hard.

  On the other hand, the vibration from the attachment body B side is transmitted from the pair of protrusions 3 and 3 of the metal plate 1 to the other protrusions 5 and 5, but the elastic body attached to the protrusions 5 and 5. 7 is prevented from being absorbed and transmitted to the vibrating body A.

  Therefore, the entire structure is compared with the conventional one by the coating of the relatively thin elastic body 7 formed by maintaining a slight height h through the steps 4, 4 and the single metal hard plate 1. In addition, an extremely thin anti-vibration mount M can be formed.

As for the elastic body 7 formed on the inner periphery of the mounting holes 6 and 6, the heads P ₁ and P ₁ of the mounting screws P and P abut and tighten as shown in FIGS. 6 (a) and 6 (b). It is also possible to provide the annular step portions 6a, 6a at the locations and to form the thick portions 7a, 7a of the elastic body 7 that are locally thicker than others.

As described above, when the contact tightening portions of the heads P ₁ , P ₁ of the mounting screws P, P are the thick portions 7 a, 7 a of the elastic body 7, compared with the case where there is no annular stepped portion, The thicknesses 7a and 7a increase the pressing thickness of the heads P ₁ and P ₁ of the screws P and P, thereby further enhancing the vibration-proofing effect.

  In the present invention, the elastic body 7 shown in FIG. 2 includes the front surface 5a and the back surface of the protruding portions 5 and 5 that are connected to the covering mounting holes 6x and 6x of the mounting holes 6 and 6 of the left and right protruding portions 5 and 5. The elastic bodies 7 and 7 attached to the front surface 5a and the back surface 5b of the projecting portions 5 and 5 including the inner peripheries of the mounting holes 6 and 6 are cross sections. Since an H-type elastic material is sufficient, the unit price of the product can be remarkably reduced because it is easy to integrate with the metal plate 1 by using less material.

  By the way, the elastic body 7 having an anti-vibration function is obtained by placing a single metal plate 1 in a mold and providing a cavity on the outer periphery of the pair of protruding portions 5 and 5 to be covered. The material can be integrally formed by vulcanization molding by injection operation from the gate.

  Specifically, for covering the protrusions 5 and 5 with the elastic body 7, small holes 8 and 8 are formed in the vicinity of the mounting holes 6 and 6 of the protrusions 5 and 5, and the small holes 8 and 8 are opposed to each other. A mold is provided with a gate, and an unvulcanized molten rubber material can be vulcanized by injection molding into a cavity provided on the outer periphery of the protrusions 5, 5 and the mounting holes 6, 6.

  On the other hand, the elastic body 7 such as rubber or plastic can be divided and fixed on the plate 1 using an adhesive.

  The adhesion of any elastic body 7 on the plate 1 can freely change the bonding area.

  Furthermore, about the plate 1, it can implement similarly even if it replaces with a metal and uses another material, for example, a hard synthetic resin material.

DESCRIPTION OF SYMBOLS 1 Plate 2 Center hole 2a ３ ， 3,5 Protruding part 5a Surface 5b Back surface 4 Step 6 Mounting hole 6a Annular step part 6x Cover mounting hole 7 Elastic body 7a Thick part 8 Small hole h Height a Central hole a ₁ Rotating shaft b ₁ , b ₂ plate A vibrating body B mounting body R elastic body S anti-vibration mount T mounting hole U stopper P, Q mounting screw P ₁ head M anti-vibration mount

Claims (5)

  A single unit having a central hole and a projecting part having a pair of mounting holes projecting through a step in the left-right direction of the central hole with respect to the projecting part having a pair of mounting holes projecting in the vertical direction Among the hard plates, the pair of projecting portions projecting in the left-right direction are covered with an elastic body that independently and independently covers the front surface and the back surface including the inner periphery of the mounting hole. Anti-vibration mount.   A single unit having a central hole and a projecting part having a pair of mounting holes projecting through a step in the left-right direction of the central hole with respect to the projecting part having a pair of mounting holes projecting in the vertical direction An anti-vibration mount comprising: a pair of projecting portions projecting in the left-right direction of the hard plate, and an elastic body continuously covering the outer peripheral surface including the inner periphery of the mounting hole.   3. The anti-vibration mount according to claim 1, wherein the protruding portion is formed in a mountain shape that becomes narrower as it goes further, and a mounting hole is provided near the tip of the mountain shape.   The elastic body is one of rubber and plastic and is characterized in that the abutting portion of the mounting bracket that covers the inner periphery of the mounting hole is locally thicker than the other portions. The vibration-proof mount according to claim 1 or 2.   The pair of protrusions protruding in the left-right direction can be fixed to a vibration body such as a motor via an elastic body via a mounting hole, and the pair of protrusions protruding in the vertical direction is attached to the mounting body of the vibration body. 3. The anti-vibration mount according to claim 1, wherein the anti-vibration mount can be fixed through a hole.

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