Small oil-gas hybrid shock absorber

Abstract

The application discloses a small oil-gas mixed shock absorber, which comprises a cylinder body and a piston rod, the cylinder body is concave at one end of the piston rod, the end of the cavity is fixed with an oil seal seat, one end of the piston rod extends into the cavity through the oil seal seat, the end of the piston rod extending into the cavity is fixedly sleeved with a piston matched with the cavity, the first space is clamped between the piston and the oil seal seat, the second space is clamped between the piston and the bottom of the cavity, the first flow channel communicated with the first space is concave at one end of the piston rod towards the second space, the second flow channel communicated with the first space and the second space is arranged on the piston, the valve plate is matched on the end face of the second flow channel towards the first space, and the shock absorber is provided with a damping spring between the cylinder body and the piston rod. The shock absorber is matched with the first space, the second space, the spring, the valve plate, the buffer pad and the damping pad, so that a better damping effect is achieved.

Description

Technical Field

[0001] This application relates to the field of shock absorbers, and in particular to a small oil-gas mixed shock absorber. Background Technology

[0002] Traditional small spring rear shock absorbers lack damping function and have poor effect on absorbing vehicle vibrations; traditional small hydraulic rear shock absorbers have damping effect, but because the damper cavity is small and the amount of oil injected is small, there will be a backlash in the damping force during the stretching and compression process. Utility Model Content

[0003] The purpose of this invention is to provide a small oil-gas mixture shock absorber to overcome the shortcomings of the prior art.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] This application discloses a small oil-gas mixing shock absorber, characterized in that it includes a cylinder and a piston rod. The cylinder has a recessed cavity at one end facing the piston rod, and an oil seal is fixed to the end of the cavity. One end of the piston rod extends through the oil seal into the cavity, and a piston that mates with the cavity is fixedly fitted onto the end of the piston rod extending into the cavity. A first space is clamped between the piston and the oil seal, and a second space is clamped between the piston and the bottom of the cavity. A first flow channel communicating with the first space is recessed at the end of the piston rod facing the second space. A second flow channel communicating with the first and second spaces is provided on the piston. A valve plate is fitted onto the end face of the second flow channel facing the first space. A shock-absorbing spring is provided between the cylinder and the piston rod.

[0006] Preferably, in the above-mentioned small oil-gas mixture shock absorber, the outer wall of the cylinder is provided with threads, an adjusting nut is threaded onto the threads, a spring seat is fixed to the end of the piston rod away from the cylinder, and the two ends of the shock absorber spring are respectively fixedly connected to the adjusting nut and the spring seat.

[0007] Preferably, in the above-mentioned small oil-gas mixed shock absorber, a shock-absorbing pad is provided at the end of the spring seat facing the oil seal seat.

[0008] Preferably, in the above-mentioned small oil-gas mixed shock absorber, the outer wall of the piston is recessed with an annular groove, and a sealing ring is provided in the annular groove.

[0009] Preferably, in the above-mentioned small oil-gas mixed shock absorber, a buffer pad is fixed at the end of the oil seal facing the piston.

[0010] Preferably, in the above-mentioned small oil-gas mixed shock absorber, aluminum lifting rings are provided on the opposite end faces of the cylinder and piston rod.

[0011] Compared with the prior art, the utility model has the following advantages:

[0012] Through the cooperation of the first space, the second space, the spring, the inflation valve, the buffer pad and the shock absorbing pad, a better shock absorbing effect is achieved. Description of Drawings

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the accompanying drawings required for describing the embodiments or the prior art will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments recorded in the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work.

[0014] Figure 1 It is a schematic structural diagram of a small-sized oil-gas hybrid rear shock absorber in a specific embodiment of the present utility model. Detailed Description of the Embodiments

[0015] The technical solutions in the embodiments of the present utility model will be described in detail below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present utility model.

[0016] Reference Figure 1 As shown in the figure, the small-sized oil-gas hybrid rear shock absorber in this embodiment includes a cylinder body 1 and a piston rod 2. An end of the cylinder body 1 facing the piston rod 2 is concavely provided with a cavity 3, an oil seal seat 4 is fixed at an end of the cavity 3, one end of the piston rod 2 passes through the oil seal seat 4 and extends into the cavity 3, one end of the piston rod 2 extending into the cavity 3 is fixedly sleeved with a piston 5 matched with the cavity 3, a first space 6 is clamped between the piston 5 and the oil seal seat 4, a second space 7 is clamped between the piston 5 and the bottom of the cavity 3, one end of the piston rod 2 facing the second space 7 is concavely provided with a first flow channel 8 communicated with the first space 6, the piston 5 is provided with a second flow channel 9 communicating the first space 6 and the second space 7, a valve plate 10 is cooperatively arranged on an end face of the second flow channel 9 facing the first space 6, a shock absorbing spring 11 is arranged between the cylinder body 1 and the piston rod 2.

[0017] Further, an outer wall of the cylinder body 1 is provided with a thread 13, an adjusting nut 14 is threadedly connected to the thread 13, an end of the piston rod 2 facing away from the cylinder body 1 is fixed with a spring seat 15, and two ends of the shock absorbing spring 11 are respectively fixedly connected with the adjusting nut 14 and the spring seat 15.

[0018] Further, an end of the spring seat 15 facing the oil seal seat 4 is provided with a shock absorbing pad 16.

[0019] Furthermore, an annular groove 17 is recessed on the outer wall of the piston 5, and a sealing ring 18 is provided inside the annular groove 17.

[0020] Furthermore, a buffer pad 19 is fixed to the end of the oil seal seat 4 facing the piston 5.

[0021] Furthermore, aluminum lifting rings 20 are provided on the opposite end faces of the cylinder body 1 and the piston rod 2.

[0022] In this technical solution, when the shock absorber is compressed, the damping spring is gradually compressed and generates a reaction force, and the piston moves downward, increasing the volume of the first space. Under the action of internal pressure, the valve plate opens, and the shock absorber oil flows into the first space through the first and second flow channels. When the shock absorber is compressed to near its shortest length, the damping pad is compressed, generating a large anti-compression reaction force, preventing the shock absorber from compressing further. When the reaction force of the compressed damping spring, the reaction force of the compressed damping pad, and the internal pressure exceed the compression force of the shock absorber, the damping spring... As the shock absorber gradually recovers and rebounds, the valve closes, and the shock absorber oil on the piston can only flow into the second space through the first flow channel. The faster the shock absorber rebounds, the greater the recovery damping force. Conversely, the recovery damping force slows down the rebound speed of the rear shock absorber, absorbing the vibration amplitude and frequency of the shock absorber, thus achieving a better damping effect. When the shock absorber rebounds to near its maximum length, the buffer pad is compressed, generating a large reaction force to prevent the shock absorber from continuing to rebound. This continuous cycle of compression and stretching forms the damping effect, thereby achieving a better damping effect.

[0023] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0024] The above are merely specific embodiments of this application. It should be noted that those skilled in the art can make several improvements and modifications without departing from the principles of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A small oil-gas mixture shock absorber, characterized in that: The device includes a cylinder body and a piston rod. The cylinder body has a recessed cavity at one end facing the piston rod. An oil seal is fixed to the end of the cavity. One end of the piston rod extends through the oil seal into the cavity. A piston that mates with the cavity is fixedly fitted at the end of the piston rod extending into the cavity. A first space is clamped between the piston and the oil seal. A second space is clamped between the piston and the bottom of the cavity. A first flow channel communicating with the first space is recessed at the end of the piston rod facing the second space. A second flow channel communicating with the first and second spaces is provided on the piston. A valve plate is fitted on the end face of the second flow channel facing the first space. A shock-absorbing spring is provided between the cylinder body and the piston rod.

2. The small oil-gas mixed shock absorber according to claim 1, characterized in that: The outer wall of the cylinder is threaded, and an adjusting nut is threaded onto the thread. A spring seat is fixed to the end of the piston rod away from the cylinder. The two ends of the shock-absorbing spring are fixedly connected to the adjusting nut and the spring seat, respectively.

3. A small oil-gas mixed shock absorber according to claim 2, characterized in that: The end of the spring seat facing the oil seal seat is provided with a shock-absorbing pad.

4. A small oil-gas mixture shock absorber according to claim 1, characterized in that: The piston has an annular groove recessed on its outer wall, and a sealing ring is provided in the annular groove.

5. A small oil-gas mixture shock absorber according to claim 1, characterized in that: A buffer pad is fixed to the end of the oil seal seat facing the piston.

6. A small oil-gas mixture shock absorber according to claim 1, characterized in that: Aluminum lifting rings are provided on the opposite end faces of the cylinder and piston rod.

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