Rubber shock absorber

Abstract

The utility model discloses a rubber shock absorber, belongs to the technical field of shock absorption structures, and provides a rubber shock absorber facilitating cleaning of attachments, the rubber shock absorber comprises an upper fixing part and a lower fixing part, the upper fixing part comprises a telescopic rod, one end of the telescopic rod penetrates through the lower fixing part and is connected with a limiting ring, and the other end of the telescopic rod is provided with an upper connecting disc; the telescopic rod is sleeved with a rubber air bag, the rubber air bag is provided with a rotary inner cavity, and the rubber air bag is located between the upper connecting disc and the lower fixing part and suitable for providing elastic supporting. The rubber air bag is used for replacing a spring to provide a damping buffering effect, compared with the spring, the rubber air bag is smooth, dust is not prone to being attached to the single surface, and the rubber air bag is easier to clean if the dust is attached due to long-time use; the design structure is compact, the stability is good, movable hard components are isolated by rubber materials, the working noise is low, and the service life of the components is long.

Description

Technical Field

[0001] The present application relates to the technical field of shock absorbing structures, and in particular to a rubber shock absorber. Background Art

[0002] The shock absorber is an important part of the vehicle suspension assembly. The existing shock absorber uses a spring to achieve the shock absorption function. However, due to the spiral structure of the spring and the curved angle of its surface, dust is easily attached and is not easy to clean. Summary of the invention

[0003] The purpose of the present application is to provide a rubber shock absorber that is convenient for cleaning attached objects.

[0004] In order to achieve the above objectives, the present application provides a rubber shock absorber: comprising an upper fixed part and a lower fixed part, the upper fixed part comprising a telescopic rod, one end of the telescopic rod passes through the lower fixed part and is connected to a limiting ring, and the other end has an upper connecting plate, the telescopic rod is outer-mounted with a rubber airbag, the rubber airbag has a rotary inner cavity, the rubber airbag is located between the upper connecting plate and the lower fixed part, and is suitable for providing elastic support to replace the spring structure.

[0005] Preferably, a rubber gasket is provided at the bottom of the lower fixing portion, the limiting ring is located below the rubber gasket, and the rubber gasket is suitable for providing a buffer for the limiting ring to avoid hard contact between metal parts.

[0006] As a preferred embodiment, the bottom surface of the lower fixing part is provided with a accommodating groove suitable for accommodating the rubber gasket, the bottom surface of the rubber gasket has a yield groove suitable for accommodating the limiting ring, and the rubber gasket is constrained by a retaining ring to the bottom surface of the lower fixing part to ensure that the position of the rubber gasket relative to the lower fixing part is stable.

[0007] Preferably, the bottom surface of the lower fixing part has a coaxial positioning ring, and the lower fixing part is provided with a circumferential screw hole on the bottom surface located within the positioning ring. The retaining ring is fixedly connected to the lower fixing part by a circumferential bolt, and the circumferential bolt passes through the retaining ring and cooperates with the circumferential screw hole thread to achieve tightening.

[0008] As a preferred embodiment, the upper end surface of the lower fixing portion is provided with a lower fitting groove suitable for fitting with the lower end of the rubber airbag, the upper fixing portion has an extension sleeve located in the center of the lower fitting groove, the rubber airbag has a passage running through the upper and lower ends for the telescopic rod to pass through, and the lower end of the rubber airbag has an expansion groove connected to the passage, suitable for fitting with the extension sleeve, so that the internal structure of the shock absorber is more compact.

[0009] As a preferred embodiment, a guide sleeve is arranged in the extension sleeve, the lower end of the extension sleeve has a coaxial shrink ring, the shrink ring has a coaxial guide hole, the upper end of the rubber gasket has an embedded groove, the guide sleeve includes an embedded ring, which is suitable for passing through the guide hole and fitting into the embedded groove, the upper end of the embedded ring has a coaxial screw-on ring, the outer side surface of the screw-on ring is provided with an external thread, the inner wall of the extension sleeve is provided with an internal thread, which is suitable for cooperating with the external thread, and the upper end of the screw-on ring has a pair of ear plates, which is convenient for using tools to apply torque to the guide sleeve.

[0010] Preferably, the lower end surface of the upper connecting plate is provided with an upper fitting groove suitable for fitting with the upper end of the rubber airbag; the limiting ring is fixedly connected to the telescopic rod by a center bolt, and the lower end surface of the telescopic rod is provided with a center screw hole, and the center bolt is suitable for passing through the limiting ring and cooperating with the center screw hole to fix the limiting ring to the end of the telescopic rod.

[0011] Preferably, the upper connecting plate is provided with an upper countersunk hole near the edge, and the lower fixing portion is provided with a lower countersunk hole near the edge for bolts and other connecting parts to pass through to install and fix the shock absorber.

[0012] Compared with the prior art, the beneficial effects of this application are:

[0013] (1) By using rubber airbags instead of springs to provide shock absorption and cushioning, compared with springs, the smooth and single surface of rubber airbags is less likely to be attached to dust, and if dust is attached due to long-term use, it is also easier to clean;

[0014] (2) The design has a compact structure and good stability. The movable hard parts are isolated by rubber materials, which results in low operating noise and long component service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the rubber shock absorber.

[0016] Figure 2 It is a three-dimensional cross-sectional view of the overall structure of the rubber shock absorber.

[0017] Figure 3 It is a three-dimensional cross-sectional view of the skeleton structure of the rubber shock absorber.

[0018] Figure 4 It is a schematic diagram of the three-dimensional structure of the connection between the limiting ring and the upper fixing part of the rubber shock absorber.

[0019] Figure 5 It is a three-dimensional structural cross-sectional view of the upper fixing part of the rubber shock absorber.

[0020] Figure 6It is a three-dimensional structural cross-sectional view of the cooperation between the central bolt and the limiting ring of the rubber shock absorber.

[0021] Figure 7 It is a schematic diagram of the three-dimensional structure of the lower fixing part of the rubber shock absorber.

[0022] Figure 8 It is a three-dimensional structural cross-sectional view of the lower fixing part of the rubber shock absorber.

[0023] Fig. 9 It is a three-dimensional structural cross-sectional view of the guide sleeve of the rubber shock absorber.

[0024] Fig.10 It is a three-dimensional structural cross-sectional view of the rubber gasket of the rubber shock absorber.

[0025] Fig.11 The figure is a three-dimensional cross-sectional view of the cooperation between the circumferential bolt and the retaining ring of the rubber shock absorber.

[0026] Fig.12 It is a three-dimensional structural cross-sectional view of the rubber airbag of the rubber shock absorber.

[0027] In the figure: 1. upper fixing part; 110. telescopic rod; 111. central screw hole; 120. upper connecting plate; 121. upper fitting groove; 122. upper countersunk hole; 2. rubber airbag; 201. channel; 202. inner cavity; 203. expansion groove; 3. central bolt; 4. limiting ring; 5. circumferential bolt; 6. retaining ring; 7. rubber gasket; 701. embedded groove; 702. giving way groove; 8. lower fixing part; 801. accommodating groove; 802. positioning ring; 803. circumferential screw hole; 804. lower countersunk hole; 805. extension sleeve; 806. shrink ring; 807. guide hole; 808. lower fitting groove; 9. guide sleeve; 901. embedded ring; 902. screw-on ring; 903. ear plate. DETAILED DESCRIPTION

[0028] Below, the present application is further described in conjunction with specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0029] In the description of the present application, it should be noted that directional words, such as the terms "center", "lateral", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating directions and positional relationships are based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of narrating the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and cannot be understood as limiting the specific scope of protection of the present application.

[0030] It should be noted that the terms "first", "second", etc. in the description and claims of the present application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0031] The terms "including" and "having" and any variations thereof in the specification and claims of this application are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus comprising a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes, methods, products or apparatuses.

[0032] like Figure 1-12 The rubber shock absorber shown includes an upper fixing part 1 and a lower fixing part 8. The upper fixing part 1 is usually fixedly connected to the vehicle frame, and the lower fixing part 8 is usually fixedly connected to the suspension. An upper connecting plate 120 is provided with an upper countersunk hole 122 at a position close to the edge. There are a plurality of upper countersunk holes 122, and the plurality of upper countersunk holes 122 are equidistantly arranged around the axis of the upper fixing part 1. The lower fixing part 8 is also provided with a plurality of lower countersunk holes 804 equidistantly arranged around the axis at a position close to the edge, all of which are for bolts and other connecting parts to pass through to achieve a fastening connection. The upper fixing part 1 includes a telescopic rod 110, one end of the telescopic rod 110, usually the lower end, passes through the lower fixing part 8 and is connected to a limiting ring 4, which prevents the telescopic rod 110 from being separated from the lower fixing part 8, and the limiting ring 4 is fixedly connected to the telescopic rod 110 through a central bolt 3. Specifically, a central screw hole 111 is provided on the lower end surface of the telescopic rod 110, and the central bolt 3 is suitable for passing through the limiting ring 4 and cooperating with the central screw hole 111 to achieve a fastening position.

[0033] A rubber gasket 7 is provided at the bottom of the lower fixing part 8, and the limiting ring 4 is located below the rubber gasket 7. Therefore, the rubber gasket 7 can provide a buffer for the limiting ring 4 to avoid hard contact between the limiting ring 4 and the lower fixing part 8, which are also made of metal. A receiving groove 801 is provided on the bottom surface of the lower fixing part 8 to accommodate the rubber gasket 7, and a yield groove 702 is provided on the bottom surface of the rubber gasket 7 to accommodate the limiting ring 4. The rubber gasket 7 is constrained by the retaining ring 6 to the bottom surface of the lower fixing part 8. Specifically, the bottom surface of the lower fixing part 8 has a coaxial positioning ring 802, and the lower fixing part 8 has a circumferential screw hole 803 on the bottom surface located within the positioning ring 802. The retaining ring 6 is buckled in the positioning ring 802 and fixedly connected to the lower fixing part 8 by a circumferential bolt 5. The circumferential bolt 5 passes through the retaining ring 6 and is threadedly matched with the circumferential screw hole 803 to achieve the fastening of the retaining ring 6.

[0034] The upper fixing portion 1 has an extension sleeve 805 located in the center of the lower fitting groove 808. The extension sleeve 805 is a cylindrical shape with upper and lower ends passing through. A guide sleeve 9 is arranged in the extension sleeve 805. The guide sleeve 9 is made of alloy material like the extension sleeve 805, but the material of the guide sleeve 9 is softer and can replace the extension sleeve 805 to directly contact and wear the telescopic rod 110. The lower end of the extension sleeve 805 has a coaxial shrink ring 806. The diameter of the shrink ring 806 is smaller than the diameter of the extension sleeve 805. The shrink ring 806 has a coaxial guide hole 807. The upper end of the rubber gasket 7 also has an embedded groove 701. The guide sleeve 9 includes an embedded ring 901, which just passes through the guide hole 807 and fits with the embedded groove 701, making the structure of the guide sleeve 9, the lower fixing part 8 and the rubber gasket 7 more compact, with better structural integrity and higher stability. The upper end of the embedded ring 901 has a coaxial screw-on ring 902, and the outer side surface of the screw-on ring 902 is provided with an external thread, and the inner wall of the extension sleeve 805 is provided with an internal thread, which just matches the external thread, and the guide sleeve 9 and the lower fixing part 8 are connected together by rotation. The upper end of the screw-on ring 902 has a pair of ear plates 903, which is convenient for cooperating with tools to apply torque to the screw-on ring 902, thereby making the installation and disassembly of the guide sleeve 9 more labor-saving.

[0035] The other end of the telescopic rod 110, that is, the upper end, has an upper connecting plate 120. The diameter of the upper connecting plate 120 is substantially the same as the diameter of the lower fixing portion 8. The telescopic rod 110 is provided with a rubber airbag 2. The rubber airbag 2 is cylindrical in shape. After being filled with air, the middle part will expand slightly outward. The rubber airbag 2 has a channel 201 that passes through the upper and lower ends for the telescopic rod 110 to pass through. The rubber airbag 2 has a rotating inner cavity 202. The inner cavity 202 usually needs to be filled with an inert gas, such as nitrogen or argon. The lower end of the rubber airbag 2 has a The expansion groove 203 connected to 201 is matched with the extension sleeve 805 protruding from the upper end of the lower fixing part 8. The rubber airbag 2 is located between the upper connecting plate 120 and the lower fixing part 8 to provide elastic support for the two. The lower end surface of the upper connecting plate 120 is provided with an upper matching groove 121, which just matches with the annular upper end of the rubber airbag 2. The upper end surface of the lower fixing part 8 is also provided with a lower matching groove 808, which is also annular and is used to match with the lower end of the rubber airbag 2, thereby improving the constraints on the upper and lower ends of the rubber airbag 2 and ensuring the stability of the rubber airbag 2 when it is compressed and deformed.

[0036] Working principle: When configuring the rubber shock absorber, bolts are used to connect the upper connecting plate 120 to the frame, and the lower fixing part 8 is connected to the swing arm structure of the suspension. When the wheel passes over an uneven road surface, the rubber airbag 2 will be compressed and adaptively deformed, thereby absorbing vibration impact and providing a good buffering effect. It can avoid damage to vehicle components due to severe impact. If it is combined with an independently arranged damping mechanism outside the shock absorber, it can achieve a good shock absorption effect. Of course, the damping mechanism can also be integrated into the shock absorber, but the damping structure is not the focus of this design. This design only uses rubber materials to achieve the shock absorption function, and uses the inert gas in the rubber airbag 2 to convert the vibration kinetic energy into internal energy and consume it.

[0037] The above describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited by the above embodiments, and the above embodiments and the specification only describe the principles of the present application. The present application may have various changes and improvements without departing from the spirit and scope of the present application, and these changes and improvements fall within the scope of the present application for which protection is sought. The scope of protection claimed by the present application is defined by the attached claims and their equivalents.

Claims

1. A rubber shock absorber, characterized in that: The invention comprises an upper fixing part (1) and a lower fixing part (8), wherein the upper fixing part (1) comprises a telescopic rod (110), one end of the telescopic rod (110) passes through the lower fixing part (8) and is connected to a limiting ring (4), and the other end of the telescopic rod (110) has an upper connecting plate (120), and the outer sleeve of the telescopic rod (110) is provided with a rubber airbag (2), wherein the rubber airbag (2) has a rotary inner cavity (202), and the rubber airbag (2) is located between the upper connecting plate (120) and the lower fixing part (8), and is suitable for providing elastic support.

2. The rubber shock absorber according to claim 1, characterized in that: A rubber gasket (7) is provided at the bottom of the lower fixing portion (8), the limiting ring (4) is located below the rubber gasket (7), and the rubber gasket (7) is suitable for providing a buffer for the limiting ring (4).

3. The rubber shock absorber according to claim 2, characterized in that: The bottom surface of the lower fixing portion (8) is provided with a receiving groove (801) suitable for accommodating the rubber gasket (7); the bottom surface of the rubber gasket (7) has a relief groove (702) suitable for accommodating the limiting ring (4); the rubber gasket (7) is constrained by a retaining ring (6) on the bottom surface of the lower fixing portion (8).

4. The rubber shock absorber according to claim 3, characterized in that: The bottom surface of the lower fixing part (8) has a coaxial positioning ring (802), and the bottom surface of the lower fixing part (8) located inside the positioning ring (802) is provided with a circumferential screw hole (803), and the retaining ring (6) is fixedly connected to the lower fixing part (8) by a circumferential bolt (5), and the circumferential bolt (5) passes through the retaining ring (6) and is threadedly engaged with the circumferential screw hole (803).

5. The rubber shock absorber according to claim 4, characterized in that: The upper end surface of the lower fixing portion (8) is provided with a lower fitting groove (808) suitable for fitting with the lower end of the rubber airbag (2); the upper fixing portion (1) has an extension sleeve (805) located in the center of the lower fitting groove (808); the rubber airbag (2) has a channel (201) passing through the upper and lower ends for the telescopic rod (110) to pass through; the lower end of the rubber airbag (2) has an expansion groove (203) connected to the channel (201) suitable for fitting with the extension sleeve (805).

6. The rubber shock absorber according to claim 5, characterized in that: The extension sleeve (805) is provided with a guide sleeve (9), the lower end of the extension sleeve (805) is provided with a coaxial shrink ring (806), the shrink ring (806) is provided with a coaxial guide hole (807), the upper end of the rubber gasket (7) is provided with an embedded groove (701), the guide sleeve (9) comprises an embedded ring (901) suitable for passing through the guide hole (807) and fitting with the embedded groove (701), the upper end of the embedded ring (901) is provided with a coaxial screw-on ring (902), the outer side surface of the screw-on ring (902) is provided with an external thread, the inner wall of the extension sleeve (805) is provided with an internal thread suitable for matching with the external thread, and the upper end of the screw-on ring (902) is provided with a pair of ear plates (903).

7. The rubber shock absorber according to claim 6, characterized in that: The lower end surface of the upper connecting plate (120) is provided with an upper fitting groove (121) suitable for fitting with the upper end of the rubber airbag (2); the limiting ring (4) is fixedly connected to the telescopic rod (110) through a central bolt (3); the lower end surface of the telescopic rod (110) is provided with a central screw hole (111); the central bolt (3) is suitable for passing through the limiting ring (4) and fitting with the central screw hole (111).

8. The rubber shock absorber according to any one of claims 1 to 7, characterized in that: The upper connection plate (120) is provided with an upper countersunk hole (122) at a position close to the edge, and the lower fixing portion (8) is provided with a lower countersunk hole (804) at a position close to the edge.

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