Shock absorber

Abstract

The embodiment of the utility model provides a shock absorber which comprises an air spring shock absorption assembly, the air spring shock absorption assembly comprises a shock absorption air chamber and a piston assembly, and the piston assembly is located in the center area of the shock absorption air chamber. The piston assembly comprises a piston, a swing rod and a bottom swing disc, the piston comprises a containing space, the bottom swing disc is arranged at the bottom of the containing space, the swing rod is vertically arranged in the containing space, the bottom of the swing rod is fixedly connected with the bottom swing disc, and the bottom of the swing rod is partially embedded into the bottom swing disc. According to the shock absorber, the swing rod part in the piston assembly is embedded into the bottom swing disc, the effective length of the swing rod during shock absorption is increased, and therefore the shock absorption effect is improved.

Description

Technical Field

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

[0002] With the development of technology, the application of various precision instruments is becoming increasingly widespread. To provide a stable working environment for these precision equipment, precision vibration dampers are an indispensable basic device. Without altering the existing basic framework of the vibration dampers, it is necessary to further improve their vibration reduction effect. Utility Model Content

[0003] The purpose of this invention is to provide a vibration damper that solves the problem of unsatisfactory vibration damping effect in existing vibration dampers.

[0004] In a first aspect, the present invention provides a vibration damper, the vibration damper including an air spring vibration damping assembly, the air spring vibration damping assembly including a vibration damping chamber and a piston assembly, the piston assembly being located in the central region of the vibration damping chamber;

[0005] The piston assembly includes a piston, a rocker arm, and a bottom rocker plate. The piston includes a receiving space, the bottom rocker plate is disposed at the bottom of the receiving space, the rocker arm is vertically disposed in the receiving space, the bottom of the rocker arm is fixedly connected to the bottom rocker plate, and the bottom portion of the rocker arm is embedded in the bottom rocker plate.

[0006] The piston assembly also includes a piston rod disposed inside the receiving space, with the bottom of the piston rod fixedly connected to the bottom swing plate, and the swing rod arranged around the piston rod.

[0007] In some possible embodiments, the piston assembly further includes a piston cover located on top of the piston and fixedly connected to the top of the piston, and the top of the rocker arm is fixedly connected to the piston cover.

[0008] In some possible embodiments, a mounting groove is formed on the side of the bottom rotor away from the piston cover, and the piston assembly further includes a fixing nut located in the mounting groove, and the bottom of the rotor is fixedly connected to the bottom rotor via the fixing nut.

[0009] In some possible embodiments, the damping chamber includes a chamber seal disposed between the piston and the piston cover, the piston cover and the piston being fixedly connected by screws and pressing the chamber seal together.

[0010] In some possible embodiments, the piston assembly further comprises a piston plate, the piston plate comprises a circular hollow area, the piston plate is fixed on the air chamber seal, the hollow area of the piston plate is correspondingly arranged with the piston cover, and the radius of the hollow area of the piston plate is smaller than the radius of the piston cover in the vertical direction.

[0011] In some possible embodiments, the top of the piston rod protrudes from the upper surface of the piston cover.

[0012] In some possible embodiments, the shock absorber further comprises a top plate, the top plate is arranged above the air spring damping assembly, and the top of the piston rod is arranged in contact with the bottom of the top plate.

[0013] In some possible embodiments, the swing rods are multiple, and the multiple swing rods are arranged around the piston rod.

[0014] In some possible embodiments, the swing rods are three, the diameters and lengths of the three swing rods are consistent, and the three swing rods are uniformly distributed at an angle of 120 degrees.

[0015] In some possible embodiments, the shock absorber further comprises a motor driving assembly, a speed sensor and a displacement sensor, the motor driving assembly, the speed sensor and the displacement sensor are all fixed outside the air spring damping assembly and arranged around the air spring damping assembly.

[0016] Embodiments of the utility model provide a kind of shock absorber, including air spring damping assembly, air spring damping assembly includes damping air chamber and piston assembly, piston assembly is located in the central region of damping air chamber;Piston assembly includes piston, swing rod and bottom swing disc, piston includes a containing space, bottom swing disc is arranged at the bottom of containing space, swing rod is vertically arranged in containing space, the bottom of swing rod is fixedly connected with bottom swing disc, and the bottom of swing rod is partially embedded in bottom swing disc.The shock absorber provided by the utility model embeds swing rod part in bottom swing disc in piston assembly, increases the effective length of swing rod when damping, to improve damping effect. BRIEF DESCRIPTION OF DRAWINGS

[0017] The technical scheme and other beneficial effects of the utility model will be apparent by the following detailed description of the specific embodiments of the utility model in combination with the drawings.

[0018] Figure 1 An embodiment schematic view of the shock absorber provided by the embodiments of the utility model is shown in the drawings.

[0019] Figure 2 A cross-sectional view of an embodiment of the piston assembly provided by the embodiments of the utility model is shown in the drawings.

[0020] Figure 3An embodiment of the piston assembly provided by the utility model is shown in a top view.

[0021] Figure 4 An embodiment structure schematic view of the piston assembly provided by the utility model is shown in the figure.

[0022] Figure 5 An embodiment complete structure schematic view of the shock absorber provided by the utility model is shown in the figure. DETAILED DESCRIPTION

[0023] The utility model will be further described in detail below in combination with the drawings and embodiments. It is particularly pointed out that the following embodiments are only used for illustrating the utility model, but do not limit the scope of the utility model. Similarly, the following embodiments are only part of the embodiments of the utility model rather than all the embodiments, and all other embodiments obtained by the person skilled in the art without creative labor belong to the scope of protection of the utility model.

[0024] In the following description of the utility model, "some embodiments" are described, which describe a subset of all possible embodiments, but it can be understood that "some embodiments" can be the same subset or different subset of all possible embodiments, and can be combined with each other without conflict.

[0025] In the following description of the utility model, the terms "first\second\third" are only to distinguish similar objects, and do not represent the specific order of the objects. It can be understood that "first\second\third" can be interchanged in a specific order or sequence as allowed, so that the utility model embodiments described here can be implemented in an order other than that illustrated or described here.

[0026] 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 the utility model belongs. The terms used herein are only for the purpose of describing the embodiments of the utility model, and are not intended to limit the utility model.

[0027] The following embodiments will be described in detail in combination with specific embodiments. It should be noted that the serial numbers of the following embodiments do not limit the preferred order of the embodiments. The utility model provides a shock absorber, as shown in the figure, an embodiment schematic view of the shock absorber provided by the utility model embodiment, Figure 1 An embodiment structure sectional view of the piston assembly provided by the utility model embodiment is shown in the figure. The shock absorber provided by the utility model will be described in detail below in combination with the drawings. Figure 2 An embodiment structure sectional view of the piston assembly provided by the utility model embodiment is shown in the figure. The shock absorber provided by the utility model will be described in detail below in combination with the drawings.

[0028] In Figure 1In the shown embodiment, the shock absorber comprises an air spring damping assembly, which is one of the main functional modules in the shock absorber and is located at the central position of the shock absorber. The air spring damping assembly mainly comprises two parts of a damping air chamber 10 and a piston assembly 20; wherein the damping air chamber 10 is filled with air of a certain pressure, when subjected to external force, the air in the air chamber is compressed, and the compressed air can provide elastic force, thereby playing a role of buffering and damping. The piston assembly 20 is fixed with a piston rod and other modules, and the piston rod can freely move up and down to realize damping. The piston assembly 20 in the utility model is located at the central region of the damping air chamber 10, and the other regions of the damping air chamber 10 except the piston assembly 20 are filled with gas for damping.

[0029] In Figure 1 In the shown embodiment, the piston assembly 20 comprises a piston 201, which comprises a vertically extending containing space, which is vertically arranged with the top plate / bottom plate in the shock absorber, and part of the functional structure of the piston assembly is located in the containing space. Please refer to Figure 2 In Figure 2 In the shown embodiment, the piston assembly 20 further comprises a swing rod 202, a bottom swing disc 203 and the like; wherein the bottom swing disc 203 is arranged at the bottom of the containing space, and the swing rod 202 is vertically arranged in the containing space, the bottom of the swing rod 202 is fixedly connected with the bottom swing disc 203, and the bottom part of the swing rod 202 is embedded in the bottom swing disc. As Figure 3 shown, an embodiment of the piston assembly provided by the utility model is shown in a top view, please refer to Figure 2 and Figure 3 The piston assembly 20 provided by the utility model further comprises a piston cover 204, which is located above the piston 201 and is fixedly connected with the piston 201 to seal the piston 201, and the piston 201 and the piston cover 204 integrally form an inverted convex letter-shaped structure. The piston cover 204 is a hollow circular structure, the hollow region in the piston cover 204 is located at the central position of the piston cover 204 and corresponds to the position of the bottom swing disc 203; the vertical projection area of the hollow region of the piston cover 204 is not greater than the vertical projection area of the containing space of the piston 201.

[0030] Please continue to refer to Figure 3The damping air chamber 10 comprises an air chamber sealing piece 101 located between the top of the piston 201 and the piston cover 204, the air chamber sealing piece 101 is hollow and circular, the hollow area of the air chamber sealing piece 101 is located at the center of the air chamber sealing piece 101 and corresponds to the vertical projection of the containing space of the piston 201, and the vertical projection area of the hollow area of the air chamber sealing piece 101 is usually not larger than the vertical projection area of the containing space of the piston 201. A convex structure 1011 is formed on the side of the air chamber sealing piece 101 away from the piston 201, the convex structure 1011 forms a containing space, and the bottom of the piston cover 204 is embedded in the containing space on the top of the air chamber sealing piece 101, so that the piston cover 204 and the piston 201 can be better fixed, and the convex structure on the air chamber sealing piece 101 can limit the piston cover 204 to avoid deviation. The top of the piston cover 204 and the piston 201 are fixedly connected through a nut, and since the air chamber sealing piece 101 is located between the top of the piston 201 and the piston cover 204, the nut can simultaneously fixedly connect the piston 201, the air chamber sealing piece 101 and the piston cover 204.

[0031] In the utility model, the swing rod part is embedded in the bottom swing disc, the length of the swing rod is increased to increase the effective length of the swing rod during damping; and while ensuring the damping effect by increasing the effective length of the swing rod, the swing rod can be prepared from a material with better damping performance to reduce the diameter of the swing rod, thereby reducing the volume of the piston assembly, increasing the volume of the air chamber outside the piston assembly, reducing the natural frequency of the damper, and further improving the damping effect.

[0032] Please refer to Figure 4 An embodiment structure schematic view of the piston assembly provided by the utility model is shown in the figure. Figure 4In the middle, the bottom swing plate 203 is formed with a mounting groove on the side surface away from the piston cover 204, the bottom of the swing rod 202 is protruded in the mounting groove, and the top of the swing rod 202 is fixedly connected with the bottom swing plate 203 through the fixing nut 206, and the fixing nut 206 is located in the mounting groove. Similarly, for the piston cover 204, in addition to the nut for fixing the piston cover 204 and the piston 201, the mounting groove can also be formed on the side surface of the piston cover 204 away from the bottom swing plate 203, the top of the swing rod 202 is protruded in the mounting groove, and the top of the swing rod 202 is fixedly connected with the piston cover 204 through the fixing nut 206, and the fixing nut 206 is located in the mounting groove on the upper surface of the piston cover 204. In some embodiments, the mounting groove can be formed only on the piston cover 204 or the bottom swing plate 203, or the mounting groove can be formed on both the piston cover 204 and the bottom swing plate 203, and the swing rod 202 is fixedly connected by the fixing nut 206, and the height of the fixing nut 206 is generally less than the depth of the mounting groove, so that the top of the swing rod 202 does not exceed the upper surface of the piston cover 204. Similarly, if the mounting groove is formed on the side of the bottom swing plate 203 away from the piston cover 204, and the bottom of the swing rod 202 is fixedly connected with the bottom swing plate 203 by the fixing nut 206; at this time, the height of the fixing nut 206 located in the mounting groove of the bottom swing plate 203 is also less than the depth of the mounting groove, and the bottom of the swing rod 202 does not exceed the lower surface of the bottom swing plate 203.

[0033] For the swing rod 202 provided by the utility model, the swing rod 202 is partially embedded in the bottom swing plate 203 at this time; when damping, the effective length of the swing rod 202 for damping is increased from the height between the upper surface of the bottom swing plate 203 and the lower surface of the piston cover 204 to the height between the upper surface of the bottom swing plate 203 and the lower surface of the piston cover 204 plus the height of the swing rod 202 embedded in the bottom swing plate 203. This design increases the effective length of the swing rod 202, thereby improving the damping effect of the damper.

[0034] Please refer to Figures 2 to 4 The piston assembly provided by the utility model further comprises a piston rod 205; the piston rod 205 is also arranged in the accommodating space formed by the piston cover 201, and the bottom of the piston rod 205 is fixedly connected with the bottom swing plate 203. Similarly to the swing rod 202, the bottom of the piston rod 205 is also partially or completely embedded in the bottom swing plate 203, and the piston rod 205 and the swing rod 202 in the utility model are arranged in parallel in the accommodating space. The top of the swing rod 202 is protruded on the piston cover 204, that is, the top of the swing rod 202 is arranged to exceed the upper surface of the piston cover 204. The piston assembly provided by the utility model further comprises a piston plate 207, and the piston plate 207 is also a hollow circular structure, and the hollow area of the piston plate 207 is located at the center position of the piston plate 207 and can be a circular structure. As shown in the drawings, Figure 3As shown, in the horizontal direction, the edge position of the air chamber seal exceeds the edge position of the piston cover, and the piston plate is fixed on the part of the air chamber seal protruding from the piston cover, that is, the piston plate is fixed at the edge position of the air chamber seal; and the hollow area of the piston plate is correspondingly arranged with the piston cover. In the vertical direction, the radius of the hollow area of the piston plate is smaller than the radius of the piston cover, that is, the edge position of the inner ring of the piston plate is above the piston cover, so that when the piston rod and the piston cover move upward as a whole, the piston rod and the piston plate can also move upward, increasing the contact area between the piston assembly and the top plate to better support the top plate to achieve vibration reduction. The top plate in the utility model is arranged above the air spring damping assembly, and the top of the piston rod protrudes from the piston cover and is in contact with the bottom of the top plate, so that the piston rod can be used to support the top plate to achieve vibration reduction.

[0035] In the utility model, the two ends of the piston rod 205 are usually fixed at the center area of the piston cover 204 and the bottom swing disc 203, and the swing rod 202 is arranged around the piston rod 205. Specifically, the swing rod 202 can be multiple, and the multiple swing rods 202 are arranged around the piston rod 205. Figure 4 As shown in the figure, the swing rod 202 can be three, and the three swing rods are the same type of swing rods with consistent diameter and length, and the three swing rods are arranged around the piston rod 205. Specifically, the three swing rods 202 can be uniformly distributed at 120° around the piston rod 205, so that the stability of the entire piston assembly can be improved.

[0036] As shown in the figure, Figure 5 As shown in the figure, the complete structure schematic diagram of an embodiment of the shock absorber provided by the utility model, the shock absorber provided by the utility model further comprises multiple functional modules of a motor driving assembly 30, a speed sensor and a displacement sensor; the motor driving assembly 30, the speed sensor and the displacement sensor are all fixed on the outside of the air spring damping assembly, and are arranged around the air spring damping assembly. Figure 5 The shock absorber shown is only one kind of structure, and does not represent the limitation of the position of the motor driving assembly 30, the speed sensor and the displacement sensor provided by the utility model.

[0037] In the above embodiments, the description of each embodiment has its own emphasis, and the parts not described in detail in a certain embodiment can be referred to the related description of other embodiments.

[0038] The above merely describes preferred embodiments of the present application and is not used to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A damper characterized by, The shock absorber comprises an air spring damping assembly, the air spring damping assembly comprises a damping air chamber and a piston assembly, the piston assembly is located in the central region of the damping air chamber; The piston assembly comprises a piston, a swing rod and a bottom swing disc, the piston comprises a containing space, the bottom swing disc is arranged at the bottom of the containing space, and the swing rod is vertically arranged in the containing space, the bottom of the swing rod is fixedly connected with the bottom swing disc, and the bottom of the swing rod is partially embedded in the bottom swing disc; The piston assembly further comprises a piston rod, the piston rod is arranged inside the containing space, and the bottom of the piston rod is fixedly connected with the bottom swing disc, and the swing rod is arranged around the piston rod.

2. The damper of claim 1, wherein The piston assembly further comprises a piston cover, the piston cover is located at the top of the piston, and the piston cover is fixedly connected with the top of the piston, and the top of the swing rod is fixedly connected with the piston cover.

3. The damper of claim 2, wherein The side of the bottom swing disc away from the piston cover is formed with a mounting groove, and the piston assembly further comprises a fixing nut, the fixing nut is located in the mounting groove, and the bottom of the swing rod is fixedly connected with the bottom swing disc through the fixing nut.

4. The damper of claim 2, wherein The damping air chamber comprises an air chamber sealing element, the air chamber sealing element is arranged between the piston and the piston cover, and the piston cover and the piston are fixedly connected through a screw and press the air chamber sealing element.

5. The damper of claim 4, wherein The piston assembly further comprises a piston plate, the piston plate comprises a circular hollow region, the piston plate is fixed on the air chamber sealing element, the hollow region of the piston plate is correspondingly arranged with the piston cover, and in the vertical direction, the radius of the hollow region of the piston plate is smaller than the radius of the piston cover.

6. The damper of claim 2, wherein The top of the piston rod is arranged on the upper surface of the piston cover.

7. The damper of claim 6, wherein The shock absorber further comprises a top plate, the top plate is arranged above the air spring damping assembly, and the top of the piston rod is arranged in contact with the bottom of the top plate.

8. The damper of claim 1, wherein The swing rod is a plurality of, and the plurality of swing rods are arranged around the piston rod.

9. The damper of claim 8, wherein The swing rod is three, the diameters and lengths of the three swing rods are consistent, and the three swing rods are uniformly distributed around the piston rod at an angle of 120°.

10. The damper of claim 1, wherein The shock absorber further comprises a motor driving assembly, a speed sensor and a displacement sensor, the motor driving assembly, the speed sensor and the displacement sensor are fixed on the outer side of the air spring damping assembly and arranged around the air spring damping assembly.

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