Shock absorber

Abstract

The shock absorber comprises a bottom plate, a top plate, a shock absorption assembly and an anti-loosening fixing block, the bottom plate and the top plate are oppositely arranged, the shock absorption assembly comprises a height adjusting structure, the height adjusting structure comprises a screw rod and a nut, the screw rod and the nut are fixed to the bottom plate, and the nut and the screw rod are matched to adjust the height of the shock absorption assembly; the anti-loosening fixing block is fixed on the bottom plate and abuts against the nut. According to the shock absorber provided by the utility model, the anti-loose fixing block is additionally arranged, the anti-loose fixing block is propped against the nut below the shock absorption assembly, and the nut and the shock absorption assembly can be prevented from deviating greatly by utilizing the anti-loose fixing block, so that the overall stability of the shock absorber is improved, and the shock absorption effect is improved.

Description

Technical Field

[0001] This utility model relates to the field of precision vibration reduction, specifically to a vibration damper. Background Technology

[0002] With the continuous improvement of the precision of ultra-precision machining equipment and measuring instruments, the vibration of their working environment is increasingly required to be low-amplitude and low-frequency, which places more stringent demands on the vibration reduction performance of vibration damping tables. Vibration damping tables typically use vibration damping components to achieve vibration reduction, but these components may deviate excessively during the vibration reduction process, affecting the vibration reduction effect. Utility Model Content

[0003] The purpose of this invention is to provide a vibration damper that addresses the problem in the prior art where vibration damping components are prone to large displacements that affect the vibration damping effect.

[0004] In a first aspect, this utility model provides a vibration damper, which includes a base plate, a top plate, and a vibration damping assembly. The base plate and the top plate are arranged opposite to each other. The vibration damping assembly includes a height adjustment structure, which includes a screw and a nut. The screw is fixed on the base plate, and the nut cooperates with the screw to adjust the height of the vibration damping assembly. The top of the vibration damping assembly is fixedly connected to the top plate.

[0005] The vibration damper also includes an anti-loosening fixing block, which is fixed to the base plate and abuts against the nut.

[0006] In some possible embodiments, the shock absorber further includes a locking screw, by which the anti-loosening fixing block is fixed to the base plate.

[0007] In some possible embodiments, the anti-loosening fixing block has a waist-shaped groove formed on the side away from the nut, and the locking screw is fixed in the waist-shaped groove.

[0008] In some possible embodiments, the base plate has a plurality of screw holes arranged in an array around the nut, with the screw holes being equidistant from the nut.

[0009] In some possible embodiments, the plurality of screw holes includes a first screw hole located inside the waist-shaped groove, and the locking screw is fixed in the first screw hole to connect the anti-loosening fixing block and the base plate.

[0010] In some possible embodiments, the plurality of screw holes includes a second screw hole and a third screw hole with the largest spacing between them, and a first included angle is formed between the second screw hole, the third screw hole and the nut, the first included angle being greater than a preset angle.

[0011] In some possible embodiments, the plurality of screw holes includes an adjacent fourth screw hole and a fifth screw hole, and a second included angle is formed between the fourth screw hole, the fifth screw hole and the nut. Both ends of the waist-shaped groove are semi-circular structures, and a third included angle is formed between the center of the two semi-circular structures and the nut. The third included angle is greater than the first included angle.

[0012] In some possible embodiments, the anti-loosening block has a fourth included angle on the side near the nut, and two adjacent sides of the nut form a fifth included angle, the fourth included angle and the fifth included angle matching.

[0013] In some possible embodiments, the anti-loosening fixing block includes a first fixing block and a second fixing block. The first fixing block is engaged between the bottom of the vibration damping assembly and the base plate. In the vertical direction, the height of the first fixing block is greater than the height of the second fixing block, and the height of the first fixing block is the same as the height of the nut.

[0014] In some possible embodiments, there are multiple vibration damping components, which are respectively disposed at multiple top corners of the base plate, and there are multiple anti-loosening fixing blocks, the number of which is the same as the number of the multiple vibration damping components.

[0015] This utility model provides a vibration damper, which includes a base plate, a top plate, a vibration damping component, and an anti-loosening fixing block. The base plate and top plate are arranged opposite to each other. The vibration damping component includes a height adjustment structure, which includes a screw and a nut. The screw and nut are fixed to the base plate, and the nut cooperates with the screw to adjust the height of the vibration damping component. The anti-loosening fixing block is fixed to the base plate and abuts against the nut. The vibration damper provided by this utility model adds an anti-loosening fixing block, which abuts against the nut below the vibration damping component. The anti-loosening fixing block can prevent large displacement of the nut and the vibration damping component, improve the overall stability of the vibration damper, and thus improve the vibration damping effect. Attached Figure Description

[0016] The technical solution and other beneficial effects of this utility model will become apparent from the following detailed description of specific embodiments in conjunction with the accompanying drawings.

[0017] Figure 1 This is a schematic diagram of an embodiment of the vibration damper provided in this utility model;

[0018] Figure 2 This is a top view of one embodiment of the anti-loosening fixing block provided in this utility model;

[0019] Figure 3 This is a schematic diagram of an embodiment of the third included angle provided by this utility model. Detailed Implementation

[0020] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be particularly noted that the following embodiments are for illustrative purposes only and do not limit the scope of the present invention. Similarly, the following embodiments are only some, not all, embodiments of the present invention, and all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] In the following description of this utility model, "some embodiments" are used, which describe a subset of all possible embodiments. However, it is understood that "some embodiments" can be the same subset or different subsets of all possible embodiments, and can be combined with each other without conflict.

[0022] In the following description of this utility model, the terms "first, second, third" are used only to distinguish similar objects and do not represent a specific order of objects. It is understood that "first, second, third" can be interchanged in a specific order or sequence where permitted, so that the embodiments of this utility model described herein can be implemented in an order other than that illustrated or described herein.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing embodiments of the invention only and is not intended to limit the invention.

[0024] The following detailed description, in conjunction with specific embodiments, should be noted. It should be understood that the sequence numbers of the embodiments are not intended to limit the preferred order of the embodiments. This utility model provides a vibration damper, and the structure of the vibration damper provided by this utility model will be described in detail below with reference to the accompanying drawings.

[0025] Figure 1 This is a schematic diagram of one embodiment of the vibration damper provided by this utility model. Figure 1 In the embodiment shown, the vibration damper mainly includes a top plate 10, a bottom plate 20, and a vibration damping assembly 30. The bottom plate 20 and the top plate 10 are arranged opposite to each other. The vibration damping assembly 30 includes a height adjustment structure, which in turn includes a screw 301 and a nut 40. The screw 301 is fixed on the bottom plate 20. The nut 40 and the screw 301 work together to adjust the height of the vibration damping assembly 30. The top of the vibration damping assembly 30 is in direct contact with and fixedly connected to the top plate 10.

[0026] Please continue to refer to this. Figure 1 ,exist Figure 1In the illustrated embodiment, the vibration damper further includes an anti-loosening fixing block 50. Since the bottom of the vibration damping component 30 is positioned above the nut 40, the bottom of the vibration damping component 30 does not directly contact the base plate 20, but rather there is a certain gap. The anti-loosening fixing block 50 of this invention is engaged between the bottom of the vibration damping component 30 and the base plate 20, and the anti-loosening fixing block 50 abuts against the nut 40 to further secure the nut 40 and prevent the nut 40 from rotating during vibration damping. The anti-loosening fixing block 50 itself also needs to be fixedly connected to the base plate 20 by locking screws 60.

[0027] like Figure 2 The image shown is a top view of an embodiment of the anti-loosening fixing block provided by this utility model. Figure 2 In the illustrated embodiment, the anti-loosening fixing block 50 is generally rectangular in shape. The side of the anti-loosening fixing block 50 away from the nut 40 is arc-shaped and has a waist-shaped groove 501 formed on it. The waist-shaped groove 501 extends along the direction of the arc-shaped side of the anti-loosening fixing block 50 and is consistent with the direction of the arc-shaped side of the anti-loosening fixing block 50. The waist-shaped groove 501 is usually a through hole that penetrates the anti-loosening fixing block 50. The locking screw 60 is inserted downward from the top of the anti-loosening fixing block 50 and fixed in the waist-shaped groove 501, and further embedded in the base plate 20 to fix the anti-loosening fixing block 50 to the base plate 20.

[0028] Please continue to refer to this. Figure 2 ,exist Figure 2 In the illustrated embodiment, a plurality of screw holes 70 are arranged in an array around the nut 40 on the base plate 20, with the nut 40 as the center. The distances between the screw holes 70 and the nut 40 are the same, and the distances between any two adjacent screw holes 70 are also the same. That is, the screw holes 70 are located on an arc centered on the nut 40. Since the locking screw 60 in this invention is fixed in the screw holes 70, the distance between the screw holes 70 and the nut 40 is equal to the distance from the waist-shaped groove 501 to the nut 40. Among the screw holes 70 is a first screw hole located inside the waist-shaped groove 501, in which the locking screw 70 is fixed to securely connect the anti-loosening block 50 and the base plate 20.

[0029] In this invention, the plurality of screw holes 70 also include any adjacent second and third screw holes. The second and third screw holes and the nut 40 form a first included angle α. The number of screw holes 70 can be n. The product of the number of screw holes n minus one (n-1) and the first included angle α, (n-1)*α, is the second included angle. In fact, the second included angle is the angle formed between the two outermost screw holes of the 70 and the nut. The second included angle in this invention is larger than a preset angle. In one specific embodiment, the first included angle α needs to be greater than 60°. Figure 3The diagram shows an embodiment of the third included angle provided by this utility model. The two ends of the waist-shaped groove in this utility model are semi-circular structures, and each semi-circular structure corresponds to a center. These two centers form a third included angle β with the nut. In this utility model, the angle β of the third included angle is greater than the first included angle α. That is, if there are two first screw holes inside the waist-shaped groove 501, the positions of these two first screw holes in the waist-shaped groove 501 should not exceed the positions of the two ends of the waist-shaped groove 501; this ensures that the first included angle α is less than the third angle β. If the number of first screw holes inside the waist-shaped groove 501 is greater than two, then the included angle formed by any two adjacent first screw holes and the nut is also less than the third angle β.

[0030] Please continue to refer to this. Figure 2 ,exist Figure 2 In this embodiment, the anti-loosening block 50 is recessed into the side of the nut 40 near the anti-loosening block to form a fourth included angle. The nut 40 is a polygonal nut, and two adjacent sides of the nut 40 form a fifth included angle. The fourth and fifth included angles match to ensure that the anti-loosening block 50 and the nut 40 are in close contact. In one specific embodiment, the nut 40 can be a hexagonal nut, and the two sides of the nut 40 that contact the anti-loosening block 50 form a fifth included angle of 120°. Therefore, the fourth included angle formed on the side of the anti-loosening block 50 near the nut 40 is also 120°, ensuring that the nut 40 and the anti-loosening block 50 can be in close contact, thereby limiting the nut 40. Meanwhile, when the nut is a hexagonal nut, no matter how the anti-loosening fixing block 50 rotates around the nut 40 to change the position of its connection with the base plate 20, as long as the third included angle is greater than the first included angle, one corner of the hexagonal nut can always be in contact with the anti-loosening fixing block 50, and at least one of the multiple screw holes must be located in the waist-shaped groove, thereby locking the anti-loosening fixing block 50.

[0031] In this invention, the anti-loosening fixing block 50 may include a first fixing block and a second fixing block, wherein the first fixing block is engaged between the bottom of the vibration damping component 30 and the base plate 20. In the horizontal direction, the second fixing block protrudes from the bottom of the vibration damping component; while in the vertical direction, the height of the first fixing block may be greater than the height of the second fixing block, thus facilitating the fixing of the locking screw onto the second fixing block. Simultaneously, the height of the first fixing block may be the same as the height of the nut to increase the contact area between the first fixing block and the nut, improving the limiting effect of the anti-loosening fixing block 50 on the nut and enhancing the stability of the vibration damping component.

[0032] In some embodiments, there may be multiple vibration damping components 30, which are respectively disposed at multiple top corner positions of the base plate 20; and there may also be multiple anti-loosening fixing blocks 50, the number of which is the same as the number of vibration damping components 30, with one vibration damping component 30 corresponding to one anti-loosening fixing block 50.

[0033] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0034] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A vibration damper, characterized in that, The vibration damper includes a base plate, a top plate, and a vibration damping assembly. The base plate and the top plate are arranged opposite to each other. The vibration damping assembly includes a height adjustment structure, which includes a screw and a nut. The screw is fixed on the base plate, and the nut cooperates with the screw to adjust the height of the vibration damping assembly. The top of the vibration damping assembly is fixedly connected to the top plate. The vibration damper also includes an anti-loosening fixing block, which is fixed to the base plate and abuts against the nut.

2. The vibration damper according to claim 1, characterized in that, The shock absorber also includes a locking screw, and the anti-loosening fixing block is fixed to the base plate by the locking screw.

3. The vibration damper according to claim 2, characterized in that, The anti-loosening fixing block has a waist-shaped groove formed on the side away from the nut, and the locking screw is fixed in the waist-shaped groove.

4. The vibration damper according to claim 3, characterized in that, The base plate has multiple screw holes arranged in an array around the nut, with the nut as the center. The distance between the screw holes and the nut is the same.

5. The vibration damper according to claim 4, characterized in that, The plurality of screw holes includes a first screw hole located inside the waist-shaped groove, and the locking screw is fixed in the first screw hole to connect the anti-loosening fixing block and the base plate.

6. The vibration damper according to claim 4, characterized in that, The plurality of screw holes includes an adjacent second screw hole and a third screw hole. The second screw hole, the third screw hole and the nut form a first included angle. The product of the number of the plurality of screw holes minus one and the first included angle is a second included angle. The second included angle is greater than a preset angle.

7. The vibration damper according to claim 6, characterized in that, Both ends of the waist-shaped groove are semi-circular structures, and the centers of the two semi-circular structures form a third angle with the nut, which is greater than the first angle.

8. The vibration damper according to claim 1, characterized in that, The anti-loosening fixing block has a fourth included angle on the side near the nut, and two adjacent sides of the nut form a fifth included angle, with the fourth included angle and the fifth included angle matching.

9. The vibration damper according to claim 1, characterized in that, The anti-loosening fixing block includes a first fixing block and a second fixing block. The first fixing block is engaged between the bottom of the vibration damping component and the base plate. In the vertical direction, the height of the first fixing block is greater than the height of the second fixing block, and the height of the first fixing block is the same as the height of the nut.

10. The vibration damper according to claim 1, characterized in that, The vibration damping components are multiple, and the multiple vibration damping components are respectively disposed at multiple top corners of the base plate. The anti-loosening fixing blocks are multiple, and the number of the multiple anti-loosening fixing blocks is the same as the number of the multiple vibration damping components.

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