JP2008008430A - Vibration-proof fixing structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To effectively absorb vibrations propagated to a supported body from a fixing member for fixing the supported body in which an apparatus is mounted, prevent a positional displacement of a mounting position of an elastic member, and adjust a pressing force to the elastic member. <P>SOLUTION: The structure is equipped with a support body 13 having a mounting hole 13a, a hole 1c provided to a supported body 1, an elastic member 14 abutting on the support body and supported body and absorbing vibrations propagated from the fixing member to the supported body, an elastic member 16 abutting on an opposite surface to the elastic member 14 with respect to the supported member, a pressing plate 15 abutting to the elastic member 16 and including a hole 15a, and a fixing member 17 consisting of a shaft part 17b into which a hole in the pressing plate and the hole 1c in the supported body are inserted and which is mounted in a mounting hole in the support body and of a fixing part 17a formed so as not to allow the hole in the pressing plate to be inserted thereinto. The pressing plate 15 is provided with at least one projection 15c, which presses a second elastic member. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an anti-vibration fixing structure for fixing a panel or the like on which a control device or the like that is resistant to vibration is mounted and fixed in a case or a housing.

  When attaching a device that does not like vibration on a panel as a supported body and storing and fixing it in a case or a housing, it is necessary to provide a vibration isolating material between the case column and the panel. FIG. 7 shows an example of a conventional anti-vibration fixing structure. When the panel 1 on which an unillustrated device is mounted (fixed) is stored in the case 2 and the upper and lower parts are fixed to the column 3 of the case 2 with screws 4. Further, an elastic member 6 having a cylindrical collar 5 inserted between the panel 1 and the column 3 of the threaded portion is interposed between the threaded panel 1 and the column 3 to absorb vibrations propagating from the column 3 to the panel 1. I try to prevent vibration. The collar 5 is for securing a slight gap so that the elastic member 6 is not crushed when the screw 4 is screwed.

  Further, in order to obtain a more anti-vibration effect, it is necessary to prevent the propagation of vibration from the threaded portion to the panel 1, and a cylindrical collar 7 is inserted between the panel 1 and the column 3 as shown in FIG. The anti-vibration bush 8 is interposed, the flat washer 9 is interposed between the head 4 a of the screw 4 and the end face of the anti-vibration bush 8, and the screw 4 is tightened to elastically fix the panel 1 to the column 3. To obtain an anti-vibration effect. The flat washer 9 prevents the vibration isolating bush 8 from being damaged by the rotation of the head 4a when the screw 4 is tightened.

  As a vibration isolator, in order to perform vibration isolation of the disk device by interposing an elastic member with respect to the base of the device, a fixed frame provided with a screw hole in the base and a support frame having a hole with a predetermined inner diameter And an elastic member formed with a groove portion and a large-diameter portion fitted into the hole portion, an axial insertion hole portion, and a screw provided with a flange portion at one end and fixed to the screw hole at the other end. There has been proposed an anti-vibration device that includes a screw and is formed of a low-hardness material and is fixed through a cylindrical spacer having a flange portion (see, for example, Patent Document 1).

If excessive tightening is performed when using gel as a vibration isolator, or if the screw and gel are in direct contact with each other, the gel will be damaged by rotation of the head when tightening the screw. In order to prevent this, a spacer having one end formed in a flange shape is used to prevent contact between the head of the screw and the gel and ensure a gap.
JP 2000-133959 A (page 4-5, FIG. 2)

  However, in the structure in which the elastic member (anti-vibration bush) 6 is pressed only by the tightening force of the screw 4 as shown in FIG. 7, it is difficult to keep the pressing force for pinching the elastic member 6 constant. In addition, the anti-vibration fixing structure as shown in FIG. 8 has sufficient types of anti-vibration because there are few types of anti-vibration bushes 8 effective for the large size and weight of the panel 1 to be fixed and the amplitude capable of absorbing vibration is small. I can't.

  Moreover, when it is set as the structure where a vibration isolator is inserted | pinched between a panel and a support | pillar, the sticking position of a vibration isolator, forgetting to stick, etc. cannot be confirmed. There is also a problem that it is difficult to maintain the pressing force of the vibration-damping material sandwiched.

  By the way, the gel used for vibration isolation generally has a problem that the vibration isolation effect is lowered when the gel is compressed (compressed by about 10% or more) by applying a high pressing force. In addition, since a value in increments of 0.5 mm to 1 mm is normally specified for the length of the cylindrical portion of the spacer, when the spacer used in the vibration isolator disclosed in Patent Document 1 is adopted. If the thickness of the gel is specified with a smaller step size, the pressure on the gel will be higher than necessary when tightening the screws, and the gel may be over-compressed, reducing the anti-vibration effect. There is.

  It is an object of the present invention to effectively absorb vibration propagating from a fixing member that fixes a supported body on which a device is mounted to the supported body, and to prevent the elastic member from being attached or displaced and further elastically. An object of the present invention is to provide an anti-vibration fixing structure capable of adjusting a pressing force to a member.

  In order to solve the above-described problem, the vibration isolating fixing structure according to the present invention includes a support having a mounting hole including a screw hole, a hole provided in a supported body, the support, A first elastic member that abuts both of the supported bodies and absorbs vibrations propagating from the support body to the supported body, and a surface opposite to the first elastic member against the supported body A second elastic member in contact with the second elastic member; a pressing plate provided with a hole; a hole in the pressing plate; and a hole in the supported body; A fixing member comprising: a shaft portion that is attached to a mounting hole portion of the body; and a fixing portion that is fixed to the shaft portion and is in contact with the pressing plate and is formed so as not to be able to pass through the hole portion of the pressing plate. In the anti-vibration fixing structure, the pressing plate has at least one convex portion, and the convex portion is the second portion. It is characterized in that allowed to pressing sexual member.

  One side of the supported body is brought into contact with the support through the first elastic member, the other side is brought into contact with the holding plate through the second elastic member, and the holding member is brought together with the holding plate by the fixing member. Elastically fixed. The first and second elastic members effectively absorb vibration propagating from the support and the fixing member and prevent vibration of the supported body.

  The pressing plate presses the second elastic member through the convex portion, so that when the screw or the like is used as the fixing member, the pressing plate serves as a guide for the sticking position of the second elastic member when tightening, and the convex portion is the elastic member. The position of the second elastic body applied and the displacement due to the rotation of the pressing plate are prevented by biting into the second portion. In addition, the pressing force of the second elastic body can be arbitrarily adjusted by adjusting the height of the convex portion.

  The vibration isolating fixing structure according to claim 2 of the present invention is the vibration isolating fixing structure according to claim 1, wherein the convex portion is formed in a hole provided in the pressing plate and an edge of the hole. It is characterized by being a burring composed of formed wall portions.

  The elastic member is pressed by the convex part formed by burring processing on the holding plate, and the convex part bites into the elastic member when tightening with a fixing member such as a screw, thereby preventing the elastic member from being attached or displaced due to the rotation of the holding plate. is doing. Further, the pressing force (compression) of the elastic member can be finely adjusted by adjusting the height of the convex portion.

  According to a third aspect of the present invention, there is provided the anti-vibration fixing structure according to the first or second aspect, wherein the collar is formed of a hollow cylinder that is inserted through the hole of the supported body. The shaft portion is inserted through the hollow portion of the collar.

  The collar prevents the vibration-proofing effect of the elastic member from being reduced by preventing the elastic member from being crushed when tightened with a fixing member such as a screw. The collar is not always necessary depending on the shape of the fixing member. However, when a screw is used as the fixing member, the screw and the collar can be prepared separately, which is convenient because the selection range of parts is widened.

  In addition, since the length of the collar is usually formed in units of 0.5 mm to 1 mm, the pressing force (compression) of the elastic member is adjusted by adjusting the height of the convex portion formed by burring on the pressing plate. Fine adjustments can be made.

  The vibration-proof fixing structure according to claim 4 of the present invention is the vibration-proof fixing structure according to any one of claims 1 to 3, wherein the elastic member is a low hardness gel-like compound. It is characterized by.

  As compared with the case where a rubber elastic member (rubber bush) is used as the low hardness gel-like compound as the elastic member for fixing the supported body, a high vibration isolating effect is obtained.

  The vibration isolating fixing structure according to claim 5 of the present invention is the vibration isolating fixing structure according to any one of claims 1 to 4, wherein the supported body is mounted with one or more control devices. It is a panel, The said support body is the housing | casing which accommodates the said panel, It is characterized by the above-mentioned.

  By providing an elastic member on both sides of the panel and fixing it to the housing, it is possible to attach a panel or the like on which a control device that dislikes slight vibrations such as a hard disk is mounted to the control panel.

  According to the present invention, it is possible to effectively prevent vibration propagating from the fixing member to the supported body by providing the elastic members on both surfaces of the supported body. In addition, by providing a convex portion on the holding plate and pressing the elastic member with this convex portion, it is possible to use it as a guideline for the elastic member sticking position when tightening with a screw or the like, and the convex portion bites into the elastic member. Accordingly, it is possible to prevent the displacement of the elastic member due to the sticking position and the rotation of the pressing plate. Moreover, it is possible to arbitrarily adjust the pressing force of the elastic member by adjusting the height of the convex portion.

  Moreover, when using a screw as a fixing member by using a collar, it is possible to prevent the elastic member from being crushed by tightening. Although a collar is not always necessary depending on the shape of the fixing member, it is convenient to prepare a screw and a collar separately, thereby expanding the selection range of parts.

  Further, by making the convex portion a burring structure, it is possible to further increase the biting force into the elastic member and to visually confirm whether the elastic member is properly sandwiched after assembly from the burring hole. .

  Further, by using a low hardness gel-like compound for the elastic member, it is possible to obtain a high vibration isolation effect as compared with the case of using a rubber elastic member (rubber bush). And, by applying this anti-vibration fixing structure to the fixing structure of the panel of the control panel on which devices that are particularly sensitive to vibration such as hard disks are mounted, it is possible to arrange the control panel around the control device that generates vibration It is.

  Hereinafter, a vibration-proof fixing structure according to the present invention will be described with reference to the drawings. As shown in FIGS. 1 and 2, the anti-vibration fixing structure 11 includes a case 12 that houses a panel 1 as a supported body, and a support body that is suspended from a floor surface (not shown) of the case 12 and fixes the panel 1. Column 13, first elastic member 14 as an elastic member (vibration isolator) interposed between column 13 and panel 1, pressing plate 15 for fixing panel 1 to column 13, panel 1 and pressing A second elastic member 16 interposed between the plate 15 and a screw 17 as a fixing member for fixing the panel 1 to the column 13 via the pressing plate 15 are formed.

  As shown in FIG. 2, for example, the support columns 13 are suspended from the left and right sides of the case 12, and the vertical positions of the left and right sides of the panel 1 are fixed. The column 13 has a plate shape, and a panel mounting hole, for example, a screw hole 13a is formed at a predetermined position. These case 12 and support | pillar 13 are formed, for example with the steel plate. In addition, the support | pillar 13 and the panel 1 have each illustrated only the left upper part vicinity position. The panel 1 is mounted with a control device (not shown) and is housed and fixed in the case 12 to constitute a control panel.

  A plurality of, for example, four convex portions 13c are formed at predetermined positions on both the upper and lower sides of the column 13 with the screw holes 13a interposed therebetween. The convex portion 13c has, for example, a burring structure in which a wall portion 13e is formed by projecting (bulging) an opening end peripheral portion of a plate surface 13b facing one side 1a (see FIG. 1) of the panel 1 of the hole 13d. ing. These convex portions 13c can finely adjust the pressing force of the elastic member 14 by adjusting the height of the wall portion 13e, and are locked when the elastic member 14 is affixed to the support column 13 so as to be displaced. It has a function to prevent. In addition, the support | pillar 13 should just be formed with the screw hole (hole for attachment) 13a for attaching the panel 1 at least, and does not necessarily need to form the convex part 13c.

  The elastic member 14 has a length approximately equal to the width of the support column 13 and is formed in a plate shape having a horizontally long rectangular shape wider than the size (outer diameter) of the convex portion 13c. The elastic member 16 is also formed in the same manner as the elastic member 14. And these elastic members 14 and 16 are formed in predetermined thickness, for example with the gel-like compound (for example, styrene gel etc.) of low hardness.

  The material and thickness of the gel compound, the mechanical properties, particularly the viscosity and rigidity, etc. may be set as appropriate in consideration of the weight of the panel 1 on which the control device or the like is mounted, the vibration frequency to be absorbed, and the like. The elastic members 14 and 16 are made of a gel compound having a low hardness, so that it is possible to effectively absorb vibrations having a high vibration frequency as compared with the case where a rubber bush is used, and to obtain a high vibration isolation effect. Is possible. In addition, the material of the gel-like compound has a wide variety of thicknesses and sizes, and a desired material can be easily selected.

  As shown in FIG. 3, the panel 1 has a mounting hole 1 c formed at a position corresponding to the screw hole 13 a of the column 13. The mounting hole 1c is a long hole that is slightly longer in the vertical direction, and the panel 1 can be moved slightly in the vertical direction. Thereby, the panel 1 can be positioned in the vertical direction.

  As shown in FIGS. 1 and 4, the pressing plate 15 has a substantially vertically long rectangular shape, the width is substantially the same as the length of the elastic members 14, 16, and the length is the vertical position of the screw hole 13 a of the column 13. When the elastic member 14 is attached to each (position of the convex portion 13 c), the length is set to the same length as the length from the upper end of the upper elastic member 14 to the lower end of the lower elastic member 14. An attachment hole 15 a is formed in the center of the pressing plate 15 so as to correspond to the screw hole 13 a of the column 13.

  The presser plate 15 has convex portions 15c formed at four corner positions on the plate surface 15b side facing the other side surface 1b of the panel 1 shown in FIG. The convex portion 15c has a burring structure in which a wall portion 15e is formed by projecting the opening edge of the hole 15d on the plate surface 15b side in the same manner as the convex portion 13c of the support column 13. And it is preferable to form these convex parts 15c in the position facing the convex part 13c of the support | pillar 13. As shown in FIG. The convex portion 15c can finely adjust the pressing force of the elastic member 16 by adjusting the height of the wall portion 15e, and has a function of preventing a positional shift when the elastic member 16 is attached to the pressing plate 15. is doing. The pressing plate 15 is formed of a steel plate.

  Next, the assembly procedure of the vibration-proof fixing structure will be described. First, as shown by a two-dot chain line in FIG. 2, the first elastic member 14 is attached to the upper and lower positions of the screw holes 13 a of the plate surface 13 b of the support column 13. At this time, the elastic member 14 is easily positioned by the convex portion 13c and is locked to prevent displacement. Next, the panel 1 is attached as shown in FIG. At this time, the other side surface 1b is pressed against the elastic member 14 so that the screw hole 13a of the support column 13 and the approximate center of the mounting hole 1c of the panel 1 are aligned. Next, the elastic member 16 is bonded to the vertical position of the mounting hole 1c on the other side surface 1b of the panel 1 in correspondence with the elastic member 14 bonded to the vertical position of the screw hole 13a of the column 13.

  The elastic member 16 may be affixed to the other side 1b of the panel 1 as shown in FIG. 3, or may be affixed to the plate surface 15b side of the pressing plate 15 as indicated by a two-dot chain line in FIG. May be. When the elastic member 16 is attached in advance to the pressing plate 15, the elastic member 16 is accurately positioned and locked by the convex portion 15c, and the pressing plate 15 can be easily assembled.

  Next, as shown in FIG. 1, the upper and lower ends of the plate surface 15 b of the pressing plate 15 are attached to the elastic member 16 attached to the upper and lower positions of the mounting hole 1 c of the panel 1. Then, as shown in FIG. 6, a flat washer 18 and a collar 19 are attached to the shaft portion 17 b of the screw 17, inserted into the mounting hole 15 a, inserted into the mounting hole 1 c of the panel 1, and threaded into the screw hole 13 a of the column 13. Screw together. The flat washer 18 is not always necessary. The collar 19 has a cylindrical shape, and the shaft portion 17b of the screw 17 is fitted therein. The length of the collar 19 is set to be a predetermined length shorter than the sum of the thicknesses of the elastic members 14 and 16, the panel 1, and the pressing plate 15. In order to prevent the elastic members 14 and 16 from being unnecessarily crushed when the screw 17 is tightened.

  When the head portion (fixed portion) 17a of the screw 17 is tightened, the convex portions 15c of the pressing plate 15 press the elastic member 16 against the panel 1 as shown in FIG. And press against the convex portion 13 c of the column 13. The pressing plate 15 can be used as a guide for the sticking position of the elastic member 16 when the screw 17 is tightened by pressing the elastic member 16 via the convex portion 15 c. The portion 15 c bites into the elastic member 16, and the rotation displacement of the pressing plate 15 when the screw 17 is tightened is prevented. Moreover, the convex part 13c of the support | pillar 13 also bites into the elastic member 14, and the position shift and rotation of the said elastic member 14 are prevented.

  The collar 19 reduces the anti-vibration effect of the elastic members 14 and 16 by preventing the elastic members 14 and 16 formed of the low hardness gel-like compound from being crushed when the screws 17 are tightened. Is preventing. Further, since the length of the collar 19 is usually formed in units of 0.5 mm to 1 mm as described above, the height of the protrusions 13 c and 15 c of the support column 13 and the pressing plate 15 formed by burring is adjusted. Thus, the pressing force (compression) of the elastic members 14 and 16 can be finely adjusted.

  Further, the collar 19 is not necessarily required depending on the shape of the fixing member, but when the screw 17 is used as the fixing member, the screw 17 and the collar 19 can be prepared separately, and the selection range of parts is expanded. Convenient.

  Then, by forming the protrusions 13 c and 15 c so as to face the support column 13 and the pressing plate 15, it becomes possible to take a larger adjustment range of the pressing force (compression) of the elastic members 14 and 16. Therefore, as described above, it is preferable to form the convex portion 13c also on the support column 13 side.

  In this way, by providing the elastic members 14 and 16 made of a low hardness gel-like compound as vibration isolators on both surfaces 1a and 1b of the panel 1, the propagation of vibration from the screw 17 fixed to the column 13 to the panel 1 is achieved. The vibration of the panel 1 is effectively prevented by being absorbed. Further, it can be visually confirmed whether or not the elastic member 16 is properly sandwiched after assembly from the hole 15d formed by burring processing of the pressing plate 15.

  As described above, it is easy to prepare various types of gel compounds according to conditions such as thickness and size compared to rubber bushes, but it depends on the size and weight of the panel to be used. Rather than preparing gels of various thicknesses, the gel-like compound (elastic members 14, 16) is subjected to simple processing such as forming protrusions on the support columns 13 and the pressing plate 15 by burring as described above. ) Is easier to adjust.

It is a partial perspective view of the fixing part of the case and panel to which the anti-vibration fixing structure according to the present invention is applied. It is a perspective view which shows the relationship between the support | pillar of a case shown in FIG. 1, and a 1st elastic member. It is a perspective view which shows the relationship between the support | pillar shown in FIG. 1, and a panel. It is the perspective view seen from the side which presses the elastic member of the holding plate shown in FIG. It is sectional drawing which follows the arrow line VV of the anti-vibration fixing structure shown in FIG. It is sectional drawing which follows the arrow line VI-VI of the vibration proof fixing structure shown in FIG. It is sectional drawing of the conventional anti-vibration fixing structure. It is other sectional drawing of the conventional anti-vibration fixing structure.

Explanation of symbols

1 Panel (supported body)
1a One side 1b Other side 1c Mounting hole 2 Case 3 Prop 4 Screw 4a Screw head 5, 7 Collar 6 Elastic member 8 Anti-vibration bush 9 Flat washer 11 Anti-vibration fixing structure 12 Case 13 Prop 13a Screw hole 13b Plate surface 13c Convex Portion 13d Hole 13e Wall portion 14 First elastic member (low hardness gel compound)
15 pressing plate 15a mounting hole 15b plate surface 15c convex portion 15d hole 15e wall portion 16 second elastic member (low hardness gel compound)
17 Screw (fixing member)
17a Head (fixed part)
17b Shaft 18 Flat washer 19 Color

Claims (5)

Propagating from the support to the supported body by contacting the support having a mounting hole including a screw hole, a hole provided in the supported body, and both of the support and the supported body A first elastic member that absorbs vibration, a second elastic member that is in contact with a surface opposite to the first elastic member with respect to the supported body, and a second elastic member that is in contact with the second elastic member; A pressing plate provided with a portion, a shaft portion that is inserted through the hole portion of the pressing plate, is inserted into the hole portion of the supported body, and is attached to the mounting hole portion of the supporting body, and the pressing plate is fixed to the shaft portion. In the anti-vibration fixing structure provided with a fixing member formed of a fixing portion that is in contact with the fixing plate and cannot be inserted through the hole of the pressing plate
The holding plate has at least one convex portion, and the convex portion presses the second elastic member.   The anti-vibration fixing structure according to claim 1, wherein the convex portion is a burring composed of a hole provided in the pressing plate and a wall portion formed at an edge of the hole.   The vibration isolator according to claim 1 or 2, further comprising a collar made of a hollow cylinder that is inserted through the hole of the supported body, wherein the shaft portion is inserted through the hollow portion of the collar. Fixed structure.   4. The anti-vibration fixing structure according to claim 1, wherein the elastic member is a low hardness gel-like compound.   5. The prevention according to claim 1, wherein the supported body is a panel on which one or more control devices are mounted, and the support body is a housing that houses the panel. Vibration support structure.

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