TWM654938U - Vibration reduction structure with improved axial vibration suppression - Google Patents

Abstract

The invention provides a vibration reduction structure with improved axial vibration suppression, which includes a body that can be elastically compressed, the body having a main body with an axial hole in the center, and the main body having a plurality of first protrusions and second protrusions at both ends of the axial direction, the first protrusions and the second protrusions protrude radially from the first end and the second end of the main body respectively and are arranged in a ring shape along the axial direction, any two adjacent first protrusions have a first spacing, any two adjacent second protrusions have a second spacing, and the first protrusions and the second protrusions have a third spacing in the axial direction. When the object equipped with the body vibrates, the first protrusions can be fed back to both sides by the first spacing, and the second protrusions can be fed back to both sides by the second spacing, so as to achieve the effect of improved axial vibration suppression.

Description

Vibration-damping structure with improved axial vibration suppression

The invention provides a vibration-damping structure, in particular a vibration-damping structure with improved axial vibration suppression.

Some electronic equipment is installed in an environment that generates vibrations, such as a computer installed in a car. When the car engine generates vibrations, they are transmitted to the computer. Therefore, a vibration-damping structure must be installed on the computer to suppress the vibrations and avoid damage to the computer.

However, when an electronic device is subjected to external vibration, the vertical vibration in the axial direction has a greater impact on the electronic device than the horizontal vibration. The conventional vibration-damping structure has a limited effect on the vertical vibration, and there is also room for improvement in terms of material cost saving. This is the problem that the present invention aims to solve.

In order to solve the above problems, the creators have devoted their minds to careful research and have developed a vibration reduction structure with improved axial vibration suppression. This improvement in axial vibration suppression can provide objects with good vibration reduction effects.

The invention provides a vibration reduction structure with improved axial vibration suppression, which includes an elastically compressible body, the body having a main body, the center of the main body having an axial hole penetrating along an axial direction, and the main body having a first end and a second end at two ends of the axial direction, the main body having a plurality of first protrusions at the first end, the first protrusions protruding along a radial direction of the main body at the first end The main body has a plurality of second protrusions at the second end, the second protrusions protrude along the radial direction at the second end and are arranged in a ring shape along the axial direction, and there is a second distance between any two adjacent second protrusions in the radial direction, and there is a third distance between the first protrusions and the second protrusions in the axial direction.

In one embodiment, the first protrusions and the second protrusions protrude symmetrically at the first end and the second end.

In one embodiment, the first protrusions and the second protrusions are asymmetrically protruded at the first end and the second end.

In one embodiment, the first protrusions and the second protrusions are four in number and are arranged equidistantly. The first intervals are formed by an angle of about 90 degrees between any two first protrusions; the second intervals are formed by an angle of about 90 degrees between any two second protrusions.

In one embodiment, the first protrusions and the second protrusions are six in number and are arranged equidistantly. The first intervals are formed by an angle of about 60 degrees between any two first protrusions; and the second intervals are formed by an angle of about 60 degrees between any two second protrusions.

In one embodiment, the first protrusions and the second protrusions are eight in number and are arranged equidistantly. The first intervals are formed by an angle of about 45 degrees between any two first protrusions; the second intervals are formed by an angle of about 45 degrees between any two second protrusions.

In one embodiment, the first protrusions and the second protrusions are twelve in number and are arranged equidistantly. The first intervals are formed by an angle of about 30 degrees between any two first protrusions; the second intervals are formed by an angle of about 30 degrees between any two second protrusions.

In one embodiment, the main body is cylindrical, and each of the first protrusions and each of the second protrusions is square-toothed.

In one embodiment, the axial hole has an axial portion and a plurality of key grooves radially extending from the axial portion.

In one embodiment, the thickness of the first protrusion and the second protrusion in the axial direction are respectively smaller than the third distance.

In one embodiment, the main body is formed in one piece of rubber material.

The vibration reduction structure with improved axial vibration suppression of the present invention has a plurality of first protrusions spaced apart rather than being integrally connected, and a plurality of second protrusions also spaced apart and not being integrally connected. Therefore, when the body is vibrated and compressed, the first protrusions and the second protrusions can be respectively fed back to both sides, thereby increasing the axial deformation of the body to effectively absorb axial vertical vibration, thereby achieving the vibration reduction effect of improved axial vibration suppression, and reducing material consumption and material costs.

In order to fully understand the purpose, features and effects of this invention, the invention is described in detail through the following specific embodiments and the attached drawings.

Referring to FIGS. 1 to 8 , the present invention provides a vibration reduction structure 100 with improved axial vibration suppression, which includes a body 10 having a main body portion 11, a plurality of first protrusions 12, and a plurality of second protrusions 13, wherein:

The main body 10 is elastically compressible, for example, made of rubber material, but the present invention is not limited to this.

The main body 11 of the body 10 has an axial hole 111 at its center, and the axial hole 111 is penetrated in the main body 11 along the axial direction A. In one embodiment, the axial hole 111 has an axial portion 111a and a plurality of key slots 111b, and the key slots 111b are radially arranged in the radial direction of the axial portion 111a (as shown in Figures 1, 2, 4-6).

The main body 11 has a first end 112 and a second end 113 at both ends of the axial direction A. A plurality of first protrusions 12 are located at the first end 112 of the main body 11, and these first protrusions 12 protrude along the radial direction R of the main body 11 at the first end 112. The plurality of first protrusions 12 are arranged in a ring shape along the axial direction A, and there is a first spacing 14 between any two adjacent first protrusions 12.

As described above, a plurality of second protrusions 13 are located at the second end 113 of the main body 11. The second protrusions 13 also protrude along the radial direction R at the second end 113, and a plurality of first protrusions 12 are also arranged in a ring shape along the axial direction A. There is a second spacing 15 between any two adjacent second protrusions 13 in the radial direction R. In addition, there is a third spacing 16 between the first protrusions 12 and the second protrusions 13 in the axial direction A. In one embodiment, the thickness of the first protrusion 12 and the second protrusion 13 in the axial direction A is less than the third spacing 16.

As shown in Figures 1 and 2, this is the first embodiment of the present invention, in which the main body 11 is cylindrical, each of the first protrusions 12 and each of the second protrusions 13 is in a square tooth shape, and the first protrusions 12 and the second protrusions 13 are symmetrically protruding at the first end 112 and the second end 113; or, as shown in Figure 1A, the first protrusions 12 and the second protrusions 13 in the first embodiment may also be asymmetrically protruding at the first end 112 and the second end 113, and the second to fourth embodiments described below are the same (not shown in the figure). Preferably, the first protrusions 12 and the second protrusions 13 are six in number and are symmetrically arranged at the first end 112 and the second end 113 and arranged equidistantly, and the first spacings 14 are formed by an angle of approximately 60 degrees between any two first protrusions 12; similarly, the second spacings 15 are formed by an angle of approximately 60 degrees between any two second protrusions 13.

In addition to the first embodiment in which the first protrusions 12 and the second protrusions 13 are six in number, there are other different embodiments of the invention. As shown in FIG4 , the second embodiment of the invention is different from the first embodiment in that the first protrusions 12 and the second protrusions 13 are four in number and are arranged equidistantly, the first spacing 14 is formed by the angle of about 90 degrees between any two first protrusions 12, and the second spacing 15 is formed by the angle of about 90 degrees between any two second protrusions 13.

As shown in FIG. 5 , this is a third embodiment of the present invention, which differs from the first embodiment in that the first protrusions 12 and the second protrusions 13 are eight in number and are arranged equidistantly, the first spacings 14 are formed by an angle of about 45 degrees between any two first protrusions 12, and the second spacings 15 are formed by an angle of about 45 degrees between any two second protrusions 13.

As shown in FIG. 6 , this is the fourth embodiment of the present invention, which is different from the first embodiment in that the first protrusions 12 and the second protrusions 13 are twelve in number and are arranged equidistantly, the first spacings 14 are formed by an angle of about 30 degrees between any two first protrusions 12, and the second spacings 15 are formed by an angle of about 30 degrees between any two second protrusions 13.

In addition to the specific embodiments described above, the positions, numbers and angles of the first protrusions 12 and the second protrusions 13 on the main body 11 of the vibration-damping structure 100 of the present invention can be changed according to actual vibration-damping requirements, and the present invention is not limited to the above embodiments.

As shown in FIG. 7 , the object in the figure is a computer mainframe 200, and a plurality of feet 201 are provided at the bottom thereof. The feet 201 are tightly placed at the third spacing 16 and fit with the first protrusions 12 and the second protrusions 13, and then the shaft 300 passes through the shaft hole 111 of the main body 11 and is fixed to the housing 400, and the housing 400 is, for example, a sheet metal of a car. When the car starts to vibrate, the computer host 200 will generate horizontal vibration and vertical vibration in the axis A along with the vibration. At this time, the foot 201 is placed at the third distance 16 and fits tightly with the main body 11 and its first protrusion 12 and second protrusion 13. In addition to the main body 11 being able to withstand horizontal vibration in the radial direction R, the first protrusion 12 and the second protrusion 13 can also withstand vertical vibration.

As mentioned above, the first protrusion 12 can be used to withstand the upward force of the foot 201 during vertical vibration. Since there are first spacings 14 between the plurality of first protrusions 12, when the first protrusion 12 is compressed and deformed due to the force in the axial direction A, the first spacings 14 can provide space for the first protrusion 12 to be fed back to both sides; furthermore, the second protrusion 13 can be used to withstand the downward force of the foot 201 during vertical vibration. Since there are second spacings 15 between the plurality of second protrusions 13, when the second protrusion 13 is compressed and deformed due to the force in the axial direction A, the second spacings 15 can also provide space for the second protrusion 13 to be fed back to both sides.

As shown in FIG8 , there is a main body 20 as a control group, in which the first protrusions 22 at both ends of the main body 21 are connected as a whole without any spacing, and the second protrusions 23 are also connected as a whole without any spacing. It can be predicted that when the first protrusions 22 and the second protrusions 23 are subjected to force in the axial direction A, they can only be fed back in the direction of their outer periphery, and there is no space for sideward feeding. The vibration suppression range is shown in the vibration suppression area a of Table 1. On the other hand, in the present invention, since there is a first spacing 14 between the first protrusions 12 and a second spacing 15 between the second protrusions 13, the first protrusions 12 and the second protrusions 13 can be fed back to both sides when compressed, and the vibration suppression range is shown in the vibration suppression area b of Table 1.

Table 1:

As shown in Table 2, it is a comparison table of echo loss (Log Mag) and frequency (Hz) obtained after testing of the main body 20 of the control group. It can be seen that the axial force measured at a frequency of 77 Hz is 10.4 g, and the axial force measured at a frequency of 127 Hz is 23.2 g.

Table 2:

As shown in Table 3, it is a comparison table of echo loss (Log Mag g) and frequency (Hz) obtained after testing of the main body 10 of the present invention, in which it can be seen that the axial force measured at a frequency of 77Hz is only 7.4g, and the axial force measured at a frequency of 127Hz is only 9.7g. From the results of Tables 2 and 3, it can be seen that the main body 10 of the present invention can provide a larger deformation in the axial direction A, and can have a larger elasticity to absorb the vertical vibration of the axial direction A, and can also produce a better vibration suppression effect.

table 3:

From the above description, it is not difficult to find that the feature of the present invention is that the vibration reduction structure 100 with improved axial A vibration suppression has a first spacing 14 between a plurality of first protrusions 12 and a second spacing 15 between a plurality of second protrusions 13, instead of the first protrusion 22 and the second protrusion 23 of the main body 20 being connected as a whole as shown in FIG8. Therefore, when the main body 10 is vibrated and compressed, the first protrusion 12 and the second protrusion 13 can be respectively fed back to both sides, thereby increasing the deformation of the main body 10 in the axial direction A, so as to effectively absorb the vertical vibration of the axial direction A, and achieve the vibration reduction effect of improving the axial A vibration suppression.

Furthermore, compared to the first protrusion 22 and the second protrusion 23 of the main body 20 in FIG. 8 , which are connected as a whole, since there is a first spacing 14 between the first protrusions 12 and a second spacing 15 between the second protrusions 13, the material of the main body 10 is saved relative to the material of the main body 20, and the effect of reducing material usage and lowering material costs can be achieved.

The present invention has been disclosed in the above with a preferred embodiment, but those skilled in the art should understand that the embodiment is only used to describe the present invention and should not be interpreted as limiting the scope of the present invention. It should be noted that all changes and substitutions equivalent to the embodiment should be included in the scope of the present invention. Therefore, the scope of protection of the present invention shall be based on the scope of the patent application.

100: Vibration damping structure 200: Computer mainframe 201: Footrest 300: Shaft 400: Casing 10: Main body 11: Main body 111: Shaft hole 111a: Axis center 111b: Key slot 112: First end 113: Second end 12: First protrusion 13: Second protrusion 14: First spacing 15: Second spacing 16: Third spacing 20: Main body 21: Main body 22: First protrusion 23: Second protrusion A: Axial R: Radial

Figure 1 is a three-dimensional appearance diagram of the vibration-damping structure of the first embodiment of the present invention. Figure 1A is another three-dimensional appearance diagram in which the first protrusion and the second protrusion of Figure 1 are changed to be asymmetrically protruding. Figure 2 is a top view of the vibration-damping structure of the first embodiment of the present invention. Figure 3 is a side view of Figure 2 taken along the 3-3 section line. Figure 4 is a three-dimensional appearance diagram of the vibration-damping structure of the second embodiment of the present invention. Figure 5 is a three-dimensional appearance diagram of the vibration-damping structure of the third embodiment of the present invention. Figure 6 is a three-dimensional appearance diagram of the vibration-damping structure of the fourth embodiment of the present invention. Figure 7 is a diagram of the vibration-damping structure of the present embodiment in use. Figure 8 is a plan view of the vibration-damping structure used for comparison with the present embodiment.

100:Vibration-damping structure

10: Body

11: Main body

111: Axle hole

111a: Axis center

111b: Key slot

112: First end

113: Second end

12: First convex part

13: Second convex part

14: First interval

15: Second interval

16: The third interval

A: Axial

R: radial

Claims (11)

A vibration damping structure with improved axial vibration damping includes an elastically compressible body, the body having a main body portion, the center of the main body portion having an axial hole penetrating along an axial direction, and the main body portion having a first end and a second end at two ends of the axial direction, the main body portion having a plurality of first protrusions at the first end, the first protrusions protruding along a radial direction of the main body portion at the first end and The first protrusions are arranged in a ring shape along the axial direction, and there is a first spacing between any two adjacent first protrusions; the main body has a plurality of second protrusions at the second end, and the second protrusions protrude along the radial direction at the second end and are arranged in a ring shape along the axial direction, and there is a second spacing between any two adjacent second protrusions in the radial direction, and there is a third spacing between the first protrusions and the second protrusions in the axial direction. A vibration damping structure with improved axial vibration suppression as described in claim 1, wherein the first protrusions and the second protrusions protrude symmetrically at the first end and the second end. A vibration damping structure with improved axial vibration suppression as described in claim 1, wherein the first protrusions and the second protrusions protrude asymmetrically at the first end and the second end. A vibration damping structure with improved axial vibration suppression as described in claim 2 or 3, wherein the first protrusions and the second protrusions are four in number and arranged equidistantly, the first spacings are formed by an angle of approximately 90 degrees between any two first protrusions; and the second spacings are formed by an angle of approximately 90 degrees between any two second protrusions. A vibration reduction structure with improved axial vibration suppression as described in claim 2 or 3, wherein the first protrusions and the second protrusions are six in number and are arranged equidistantly, the first spacings are formed by an angle of about 60 degrees between any two first protrusions, and the second spacings are formed by an angle of about 60 degrees between any two second protrusions. A vibration damping structure with improved axial vibration suppression as described in claim 2 or 3, wherein the first protrusions and the second protrusions are eight in number and are arranged equidistantly, the first spacings are formed by an angle of about 45 degrees between any two first protrusions, and the second spacings are formed by an angle of about 45 degrees between any two second protrusions. A vibration damping structure with improved axial vibration suppression as described in claim 2 or 3, wherein the first protrusions and the second protrusions are twelve in number and are arranged equidistantly, the first spacings are formed by an angle of about 30 degrees between any two first protrusions; the second spacings are formed by an angle of about 30 degrees between any two second protrusions. A vibration reduction structure with improved axial vibration suppression as described in claim 1, wherein the main body is cylindrical, and each of the first protrusions and each of the second protrusions are square teeth-shaped. A vibration damping structure with improved axial vibration suppression as described in claim 1, wherein the axial hole has an axial center portion and a plurality of key grooves radially extending in the axial center portion. A vibration damping structure with improved axial vibration suppression as described in claim 1, wherein the thickness of the first protrusion and the second protrusion in the axial direction are respectively smaller than the third distance. A vibration damping structure with improved axial vibration suppression as described in claim 1, wherein the main body is integrally molded from rubber material.

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