JP3004411U - Anti-vibration hanger - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a vibration-proof hanger that is easy to assemble, improves workability during installation, and does not impair vibration-proof performance. [Structure] In a vibration-proof hanger 11 including a frame body 1, a stepped tubular rubber elastic body 3, a coil spring 2, and a support member 4, the stepped tubular rubber elastic body 3 has an outer periphery on a small diameter portion 3b. A plurality of strip-shaped projections 3g extending in the axial direction of the stepped tubular rubber elastic body 3 are provided, and the coil spring 2 is press-fitted and fixed to the small diameter portion 3b of the stepped tubular rubber elastic body 3. .

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an anti-vibration device, and particularly to an anti-vibration hanger suitable for suspending and supporting anti-vibration of cable racks, pipes, blowers and the like.

[0002]

[Prior art]

 Conventionally, as an example of this type of vibration-proof hanger, as shown in FIG. 8, a tubular rubber elastic body 33 is fitted on an upper plate of a frame body 31, and a coil spring 32 and a supporting member 34 of a lower opening are formed on a lower plate. Some of them are arranged on the side.

This vibration-proof hanger inserts the tip of the bolt fixed to the ceiling into the through hole 33d of the cylindrical rubber elastic body 33 and fixes it with a nut, while the tip of the hanging bolt suspends the device or the like to be vibration-proof. Is inserted into the through hole 35 provided in the center of the lower plate side, the coil spring 32, and the through hole 34d of the support member 34 at the lower opening, and fixed by a nut.

By the way, in such a conventional anti-vibration hanger, since the coil spring 32 is not fixed to the lower plate side of the frame body 31, when the device or the like to be anti-vibrated is suspended from the ceiling, There is a drawback in that workability is poor, such as the need to position 32 at the center of the lower plate side of the frame rest 31 and the coil spring 32 falling during the suspending work.

Further, in such a conventional vibration-proof hanger, when the position of the coil spring 32 is largely displaced from the center of the lower plate of the frame body 31, the suspension bolt comes into contact with the through hole 35 of the frame body 31, and There was another drawback that performance was compromised.

As another conventional example, as shown in FIG. 9, a stepped disc-shaped rubber elastic body 43 having a through hole 43d in the center is fitted to the lower plate of the frame 41, and is attached to the small diameter portion 43b. A vibration-proof hanger is known in which a coil spring 42 is press-fitted and fixed, and a stepped disc-shaped rubber elastic body 44 having a through hole 44d in the center is press-fitted and fixed to the upper end of the coil spring 42.

However, in such a conventional vibration-proof hanger, the coil spring 42 is positioned at the center of the lower plate of the frame body 41 and does not fall off, so that the above-mentioned drawbacks are eliminated. However, as shown in FIG. 10, the outer circumferences of the small diameter portions 43b and 44b of the stepped disc-shaped rubber elastic bodies 43 and 44 and the inner diameter portion of the coil spring 42 are in contact with each other over the entire surface, and a large force is required for press-fitting and fixing. Another drawback was that it was necessary and took a long time to assemble the anti-vibration hanger.

[0008]

[Problems to be solved by the device]

 Therefore, the present invention has been made in order to solve the above-mentioned drawbacks, and it is easy to assemble the vibration-proof hanger, and further, the coil spring is prevented from easily falling off from the frame body after assembly. For this reason, when suspending the equipment to be isolated from the ceiling, it is not necessary to position the coil spring in the center of the lower plate side of the frame, and workability is greatly improved. The purpose is to provide a vibration-proof hanger that will not be damaged.

[0009]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the structure of the present invention will be described with reference to the reference numerals of the drawings which are examples, and the present invention includes a frame body 1 including an upper plate 1a, a lower plate 1b and side plates 1c. The stepped tubular rubber elastic body 3 fitted in the through hole 5 provided in the center of the lower plate 1b of the frame body 1 and the stepped portion 3c of the stepped tubular rubber elastic body 3 are arranged. In the vibration-proof hanger 11 including the coil spring 2 and the support member 4 having the lower opening arranged at the upper end of the coil spring 2, the outer diameter dimension d1 of the small diameter portion 3b of the stepped tubular rubber elastic body 3 is set to the coil spring. The inner diameter dimension d3 of the stepped cylindrical rubber elastic body 3 is set to be smaller than the inner diameter dimension d3 of the stepped cylindrical rubber elastic body 3, and the outer dimension dimension d2 of the band shaped protrusion 3g is provided. Is larger than the inner diameter dimension d3 of the coil spring 2, and the coil spring 2 is stepped. A vibration damping hanger was press-fitted into the small diameter portion 3b of the tubular rubber elastic body 3.

[0010]

[Action]

 In the vibration-proof hanger 11 configured as described above, the stepped tubular rubber elastic body 3 is fitted in the center of the lower plate 1b of the frame body 1, and the coil spring 2 is the small-diameter portion of the stepped tubular rubber elastic body 3. Since it is press-fitted and fixed to 3b, the coil spring 2 will not easily fall off the frame 1 after the vibration-proof hanger 11 is assembled. For this reason, workability at the time of attaching the anti-vibration hanger 11 is significantly improved. Further, since the coil spring 2 is positioned in the center of the frame body 1, the suspension bolt does not come into contact with the through hole 5 of the frame body 1 and the vibration damping performance is not impaired.

[0011]

【Example】

 An embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a right half sectional view of an embodiment of the present invention. In this figure, reference numeral 1 denotes a frame body, and a stepped tubular rubber elastic body 3 is fitted in a through hole 5 provided in a lower plate 1b of the frame body 1. The lower end of the coil spring 2 is press-fitted into the small-diameter portion 3b until the lower end comes into contact with the stepped portion 3c, and the lower opening support member 4 is disposed on the upper end of the coil spring 2.

Here, as shown in FIG. 4, the stepped tubular rubber elastic body 3 comprises a cylindrical large diameter portion 3a, a cylindrical small diameter portion 3b, a step portion 3c, and a through hole 3d. Has been done. Further, the lower surface of the large diameter portion 3a is provided with a protruding portion 3f having a neck portion 3e that fits into the through hole 5 of the lower plate 1b of the frame body 1. Further, on the outer periphery of the small-diameter portion 3b, there are four strip-shaped projections 3g extending in the axial direction of the stepped tubular rubber elastic body 3, and a washer 3h is vulcanized and adhered to the stepped portion 3c. There is.

Further, as shown in FIGS. 5 and 6, the outer diameter dimension d1 of the small-diameter cylindrical portion 3b of the stepped tubular rubber elastic body 3 is smaller than the inner diameter dimension d3 of the coil spring, and the outer dimension of the band-shaped projection 3g. By making the method d2 larger than the inner diameter dimension d3 of the coil spring 2, as shown in FIG. 3, the coil spring 2 can be press-fitted and fixed to the small diameter cylindrical portion 3b of the stepped cylindrical rubber elastic body 3 with a small force, and The coil spring 2 is prevented from easily falling off from the stepped tubular rubber elastic body 3.

Although the number of the band-shaped protrusions 3g is four, the number of the coil-shaped springs 3 is three or more so that the coil spring 2 can be positioned at the center of the stepped tubular rubber elastic body 3. It suffices that they are arranged substantially evenly on the outer circumference of the small diameter portion 3b.

Although a washer 3h is vulcanized and adhered to the stepped portion 3c, the washer 3h may be omitted.

The frame 1 is formed by bending a metal plate material, and a mounting hole 6 is provided in the upper plate 1a thereof, and electrogalvanization is applied as a rust preventive measure. The supporting member 4 is a bowl-shaped sheet metal member having a downward opening having a through hole 4d in the center, and similarly, electrozinc plating is applied as a rust preventive measure.

The frame 1 and the support member 4 may be made of resin having strength and weather resistance.

Then, as shown in FIG. 7, the vibration-proof hanger 11 configured as described above inserts the tip of the bolt fixed to the ceiling B into the mounting hole 6 provided in the upper plate of the frame body 1. While fixing with a nut, suspend the equipment A, etc. to be isolated from vibration, and attach the tip of the hanging bolt to the through hole 3d of the stepped tubular rubber elastic body 3, the coil spring 2, and the support member 4 of the lower opening. It is used by being inserted into the hole 4d and fixed by a nut.

[0019]

[Effect of device]

 As described above, according to the present invention, the coil spring can be easily press-fitted and fixed to the small diameter portion of the stepped tubular rubber elastic body with a small force, and the coil spring can be easily stepped after the vibration-proof hanger is assembled. Since it does not fall off from the attached tubular rubber elastic body, the workability when attaching the anti-vibration hanger is greatly improved.

Moreover, since the coil spring is positioned in the center of the lower plate of the frame body, the suspension bolt does not come into contact with the through hole of the frame body, so that the vibration isolation performance is not impaired during use. Absent.

[Brief description of drawings]

FIG. 1 is a right half sectional view of an embodiment of the present invention.

FIG. 2 is a side view of an embodiment of the present invention.

3 is a cross-sectional view taken along the line AA of FIG.

FIG. 4 is a right half sectional view of an embodiment of a stepped tubular rubber elastic body according to the present invention.

FIG. 5 is a plan view of an embodiment of a stepped tubular rubber elastic body according to the present invention.

FIG. 6 is a diagram showing an inner diameter of a coil spring.

FIG. 7 is a view showing a use state of the vibration-proof hanger according to the embodiment of the present invention.

FIG. 8 is a right half sectional view of a conventional vibration-proof hanger.

FIG. 9 is a right half sectional view of another conventional vibration damping hanger.

10 is a sectional view taken along line BB of FIG.

[Explanation of symbols]

 1 Frame 2 Coil Spring 3 Stepped Cylindrical Rubber Elastic Body 3b Small Diameter Part 3g Band-like Protrusion 4 Supporting Member 5 Through Hole 11 Anti-Vibration Hanger A Equipment to Be Anti-Vibrated B Ceiling

Claims (2)

[Scope of utility model registration request] 1. An upper plate (1a), a lower plate (1b) and a side plate (1).
c) a frame body (1) and a lower plate (1) of the frame rest (1)
b) a stepped tubular rubber elastic body (3), a coil spring (2) arranged on the stepped portion (3c) of the stepped tubular rubber elastic body (3), and this coil In a vibration-proof hanger (11) comprising a support member (4) having a downward opening arranged at the upper end of a spring (2), the stepped tubular rubber elastic body (3) has a small diameter portion (3b) on the outer periphery thereof. A plurality of strip-shaped protrusions (3g) extending in the axial direction of the stepped tubular rubber elastic body (3) are provided, and the coil spring (2) is provided with a small diameter portion of the stepped tubular rubber elastic body (3). A vibration-proof hanger characterized by being press-fitted and fixed to (3b). 2. The protection according to claim 1, wherein the number of strip-shaped projections (3g) is 3 or more, and the strip-shaped projections (3g) are arranged substantially evenly on the outer periphery of the small diameter portion (3b) of the stepped tubular rubber elastic body (3). Swing hanger.