Monotube shock absorber

Abstract

The present invention relates to the technical field of shock absorbers, and specifically to a single-tube shock absorber, including a shock absorber body, which is composed of a cylinder and a rod body. A cavity is opened inside the top end of the cylinder, and a sliding rod is symmetrically slidably connected inside the cavity. A connecting block is fixedly installed between the top ends of the two sliding rods, and an arc scraper is fixedly installed on the side of the two connecting blocks close to the rod body. It also includes a receiving groove opened on the surface of the arc scraper, a pressure strip is fixedly installed on the top end of the cavity, a channel extending to the inside of the receiving groove is opened inside the connecting block, and a sewage pipe that passes through the cavity is fixedly installed on the other end of the channel. A cleaning mechanism is symmetrically provided on the top end of the cylinder, the rod body contracts inside the cylinder, and the pressure in the upper half chamber inside the cylinder gradually decreases. Under elasticity, the moving plate is accompanied by a push rod and leaves the triangular groove inside the connecting block. Under the action of the second spring assembly, the arc scraper is tightly attached to the surface of the rod body, and the scraped oil stains flow into the inside of the receiving groove.

Description

Technical Field

[0001] The present invention relates to the technical field of shock absorbers, in particular to a monotube shock absorber. Background Art

[0002] Shock absorbers are used to dampen the rebound oscillations caused by springs absorbing shock and to reduce road impact. They are widely used in automobiles to accelerate the attenuation of frame and body vibrations, improving ride smoothness. While shock-absorbing springs can filter out road vibrations when driving over uneven surfaces, the springs themselves still experience reciprocating motion, and shock absorbers are designed to dampen this spring bounce.

[0003] As the car is running, the piston rod inside the shock absorber will slide back and forth inside the piston cylinder to reduce shock. During the driving process, dust, sand and other substances will adhere to the surface of the piston rod. Long-term operation of the shock absorber will allow the sand to invade and damage the fork rod and oil seal, shortening the service life of the shock absorber and causing oil leakage. Therefore, the surface of the piston rod needs to be cleaned during the operation of the shock absorber. Summary of the Invention

[0004] In response to the above-mentioned shortcomings of the prior art, the present invention provides a single-tube shock absorber, which can effectively solve the problem that during the operation of the prior art shock absorber, impurities such as mud and sand on the surface of the piston rod cannot be cleaned, causing damage to the fork rod and oil seal and shortening the service life of the shock absorber.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0006] The present invention provides a monotube shock absorber, comprising a shock absorber body, wherein the shock absorber body is composed of a cylinder and a rod body, a cavity is provided inside the top end of the cylinder, a sliding rod is symmetrically slidably connected inside the cavity, a connecting block is fixedly installed between the top ends of the two sliding rods, an arc-shaped scraper is fixedly installed on one side of the two connecting blocks close to the rod body, and further comprises a receiving groove provided on the surface of the arc-shaped scraper, a pressure strip is fixedly installed on the top end of the cavity, the diameter of the pressure strip is larger than the diameter of the two arc-shaped scrapers when combined, a channel is provided inside the connecting block extending to the inside of the receiving groove, a sewage pipe that passes through the cavity is fixedly installed at the other end of the channel, and a cleaning mechanism is symmetrically provided on the top end of the cylinder:

[0007] The cam is secured to a location where the piston is located adjacent to the piston rod and is secured to a location on the piston rod of the cam, the piston rod being secured to a location where the piston is located adjacent to the piston rod and is secured to a location on the piston rod of the cam.

[0008] Furthermore, the opening and closing mechanism includes a slide symmetrically opened on the inner wall of the exhaust pipe, a first spring assembly is fixedly installed at the top of the slide, a slide is elastically connected to the inside of the slide through the first spring assembly, and a disc is fixedly installed between the bottom ends of the two slides.

[0009] Furthermore, a fixing plate is fixedly mounted on one side of the bottom end of the connecting block close to the inner wall of the cavity, and a plurality of second spring assemblies are fixedly mounted on the side of the fixing plate facing the inner wall of the cavity.

[0010] Furthermore, the depth of the internal receiving groove of the arc-shaped scraper gradually increases from both ends to the middle.

[0011] Furthermore, grooves are symmetrically provided at the top of the inner part of the cylinder, a movable plate is elastically connected inside the groove, a push rod extending into the cavity is slidably connected at the center position of the top of the movable plate, and a triangular groove is provided at the bottom end of the connecting block.

[0012] Compared with the prior art, the technical solution provided by the present invention has the following beneficial effects:

[0013] 1. When the rod body contracts and slides inside the cylinder, the pressure in the upper chamber inside the cylinder gradually decreases. Under the action of elasticity, the movable plate and the push rod leave the triangular groove inside the connecting block. Under the action of the second spring assembly, the arc-shaped scraper is tightly attached to the surface of the rod body for cleaning. The scraped oil stains flow into the inside of the storage groove and finally into the inside of the channel.

[0014] 2. When the rod body extends inside the cylinder body, the pressure in the upper chamber inside the cylinder body gradually increases. When the pressure is greater than the elastic force, the movable plate pushes the push rod into the cavity and slides inside the triangular groove, so that the connecting block with the arc scraper moves away from the surface of the rod body. When the arc scraper leaves the surface of the rod body, the two tooth plates slide in different directions under the action of the connecting rod and the gear, so that the piston rod moves to the inside of the piston cylinder and slides. Gas is generated during the sliding process, and the gas is transmitted to the outlet pipe and the communicating cavity for storage through the connecting pipe. When the outlet of the outlet pipe coincides with the through groove, the disc is pushed out under the action of air pressure, and the gas quickly enters the inside of the channel, flushing the impurities inside the channel out of the sewage pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. Those skilled in the art can also derive other drawings based on these drawings without inventive effort.

[0016] Figure 1 It is a structural schematic diagram of the present invention;

[0017] Figure 2 It is a sectional perspective view of a local structure of the present invention;

[0018] Figure 3 It is a partial structural cross-sectional view of the present invention;

[0019] Figure 4 for Figure 2 A magnified view of the structure at B in the middle;

[0020] Figure 5 is a cross-sectional view of the arc scraper of the present invention;

[0021] Figure 6 for Figure 1 A magnified view of the structure at point A;

[0022] Figure 7 Schematic diagram of the internal opening and closing mechanism of the air outlet pipe of the present invention;

[0023] Figure 8 It is a schematic diagram of the local structure of the layering strip of the present invention.

[0024] The numbers in the figure represent: 1. shock absorber body; 101. cylinder; 102. rod body; 2. cavity; 3. slide rod; 4. connecting block; 5. arc scraper; 6. storage groove; 7. channel; 8. sewage pipe; 10. adjustment groove; 11. tooth plate; 13. gear; 14. connecting rod; 15. connecting pipe; 16. piston cylinder; 17. piston rod; 18. pressure strip; 19. connecting cavity; 20. second connecting hole; 21. first connecting hole; 22. exhaust pipe; 23. slide groove; 24. first spring assembly; 25. slide plate; 26. disc; 27. groove; 28. movable plate; 29. ​​push rod; 30. triangular groove; 31. fixed plate; 32. second spring assembly. DETAILED DESCRIPTION

[0025] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0026] The present invention will be further described below with reference to the embodiments.

[0027] Example: A monotube shock absorber includes a shock absorber body 1, which is composed of a cylinder 101 and a rod 102. A cavity 2 is opened inside the top of the cylinder 101. A slide rod 3 is symmetrically slidably connected inside the cavity 2. The slide rod 3 assists the connecting block 4 to slide inside the cavity 2. A connecting block 4 is fixedly installed between the tops of the two slide rods 3. An arc-shaped scraper 5 is fixedly installed on the side of the two connecting blocks 4 close to the rod 102. When the arc-shaped scraper 5 contacts the surface of the rod 102, it cleans the oil stains on the surface of the rod 102. It also includes a receiving groove 6 on the surface of the arc-shaped scraper 5 to scrape the oil stains from the surface of the rod 102. When impurities flow into the interior of the receiving groove 6, a pressure strip 18 is fixedly installed at the top of the interior of the cavity 2. The pressure strip 18 blocks the receiving groove 6 when the arc scraper 5 is reset along with the slide rod 3 to prevent oil stains from spraying out of the receiving groove 6. The diameter of the pressure strip 18 is larger than the diameter of the two arc scrapers 5 when combined. A channel 7 extending to the interior of the receiving groove 6 is opened inside the connecting block 4. The oil stains collected in the interior of the receiving groove 6 will enter the interior of the channel 7. The other end of the channel 7 is fixedly installed with a sewage pipe 8 that passes through the cavity 2. The oil stains in the channel 7 are discharged along the sewage pipe 8 under the action of high wind speed. A cleaning mechanism is symmetrically provided on the top of the cylinder 101:

[0028] Reference Figure 3 、 Figure 4 and Figure 6, the cleaning mechanism includes two communicating chambers 19 opened in the pressure strip 18, one side of the communicating chamber 19 is provided with a first communicating hole 21, and the top of the communicating chamber 19 is provided with a second communicating hole 20, an air outlet pipe 22 is fixedly installed in the first communicating hole 21, and a connecting pipe 15 that passes through the cylinder 101 is fixedly installed in the second communicating hole 20, and a piston cylinder 16 is fixedly installed on the other side of the connecting pipe 15, and the gas inside the piston cylinder 16 enters the interior of the air outlet pipe 22 through the connecting pipe 15 and the communicating chamber 19, and the adjusting grooves 10 on both sides of the surface of the cylinder 101, the interior of the adjusting groove 10 is symmetrically connected with the tooth plate 11 for sliding, and the center position of the interior of the adjusting groove 10 is rotatably connected with the gear 13 adapted to the two tooth plates 11, when the arc scraper 5 has completed cleaning the oil stains and other stains on the surface of the rod body 102, the push rod 29 and The hypotenuses of the triangular groove 30 cooperate with each other, and the lower connecting block 4 with the arc scraper 5 slides away from the surface of the rod body 102. The bottom end of one of the tooth plates 11 is fixedly installed with a connecting rod 14. Under the connecting action of the connecting rod 14, the tooth plate 11 at the bottom end of the adjusting groove 10 slides in the direction away from the surface of the rod body 102. Under the action of the gear 13, the tooth plate 11 at the top end of the adjusting groove 10 slides toward the rod body 102. The surface of the other tooth plate 11 is fixedly installed with a piston rod 17 adapted to the piston cylinder 16. During the sliding process of the tooth plate 11 at the top end of the adjusting groove 10, the piston rod 17 is synchronously compressed and slid inside the piston cylinder 16 to generate gas. A through groove extending to the inside of the channel 7 is opened at the top of the connecting block 4. The high-speed gas enters the interior of the channel 7 through the through groove, and the outlet end of the outlet pipe 22 is provided with an opening and closing mechanism.

[0029] Reference Figure 7 The opening and closing mechanism includes a slide groove 23 symmetrically opened on the inner wall of the outlet pipe 22. When the outlet end of the outlet pipe 22 moves to just above the through groove opened on the surface of the connecting block 4, the gas inside the outlet pipe 22 generates a strong impact force, pushing the disc 26 out of the end of the outlet pipe 22 along the through groove to the inside of the channel 7. The airflow blows out the oil stains and other dirt inside the channel 7 from the drain pipe 8. A first spring assembly 24 is fixedly installed on the top of the slide groove 23. The interior of the slide groove 23 is elastically connected to a slide plate 25 through the first spring assembly 24. A disc 26 is fixedly installed between the bottom ends of the two slide plates 25. The diameter of the through groove is the same as the diameter of the outlet pipe 22. After the gas injection is completed, the disc 26 is pulled back from the inside of the channel 7 along the through groove to the outlet port of the outlet pipe 22 under the elastic force of the first spring assembly 24.

[0030] Reference Figure 2 and Figure 3A fixing plate 31 is fixedly installed on the side of the bottom end of the connecting block 4 close to the inner wall of the cavity 2, and a plurality of second spring assemblies 32 are fixedly installed on the side of the fixing plate 31 facing the inner wall of the cavity 2. The second spring assembly 32 is in a retracted state when the arc scraper 5 is away from the surface of the rod body 102. When the push rod 29 is away from the triangular groove 30, the retracted second spring assembly 32 generates elastic force to push the connecting block 4 with the arc scraper 5 to slide toward the surface of the rod body 102.

[0031] Reference Figure 5 The depth of the receiving groove 6 inside the arc-shaped scraper 5 gradually increases from the two ends to the middle, and the oil stains and other stains flowing into the receiving groove 6 will be concentrated and flow into the interior of the channel 7.

[0032] Reference Figure 2 and Figure 3 The top of the cylinder 101 is symmetrically provided with a groove 27, and the interior of the groove 27 is elastically connected to a movable plate 28. When the rod body 102 contracts and slides inside the cylinder 101, the pressure in the upper chamber inside the cylinder 101 gradually decreases, and the movable plate 28 is accompanied by a push rod 29, which slides along the groove 27 away from the cavity 2 under the action of the elastic force. The center position of the top of the movable plate 28 is slidably connected to a push rod 29 extending into the interior of the cavity 2. The bottom end of the connecting block 4 is provided with a triangular groove 30. On the contrary, when the rod body 102 extends and slides inside the cylinder 101, the air pressure in the upper chamber inside the cylinder 101 gradually increases. When the air pressure is greater than the elastic force of the elastically connected movable plate 28, the movable plate 28 is accompanied by the push rod 29 and slides in the direction of the cavity 2. The sliding push rod 29 conflicts with the triangular groove 30 to generate an extrusion force, pushing the connecting block 4 with the arc scraper 5 to leave the surface of the rod body 102.

[0033] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A monotube shock absorber, comprising a shock absorber body (1), wherein the shock absorber body (1) is composed of a cylinder (101) and a rod (102), and is characterized in that: A cavity (2) is provided inside the top of the cylinder (101), a slide rod (3) is symmetrically slidably connected inside the cavity (2), a connecting block (4) is fixedly installed between the tops of the two slide rods (3), an arc-shaped scraper (5) is fixedly installed on one side of the two connecting blocks (4) close to the rod body (102), and a receiving groove (6) is provided on the surface of the arc-shaped scraper (5), a pressure strip (18) is fixedly installed at the top of the cavity (2), a channel (7) extending to the inside of the receiving groove (6) is provided inside the connecting block (4), and a sewage pipe (8) penetrating the cavity (2) is fixedly installed at the other end of the channel (7), and a cleaning mechanism is symmetrically provided at the top of the cylinder (101): The cleaning mechanism comprises two communicating cavities (19) provided inside the pressure strip (18), a first communicating hole (21) provided on one side of the communicating cavity (19), a second communicating hole (20) provided on the top end of the communicating cavity (19), an air outlet pipe (22) fixedly installed inside the first communicating hole (21), a connecting pipe (15) passing through the cylinder (101) fixedly installed inside the second communicating hole (20), a piston cylinder (16) fixedly installed on the other side of the connecting pipe (15), and the adjusting holes on both sides of the surface of the cylinder (101) are provided. A groove (10) is provided, wherein the interior of the regulating groove (10) is symmetrically and slidingly connected to a tooth plate (11), and a gear (13) adapted to the two tooth plates (11) is rotatably connected at the center position of the interior of the regulating groove (10), wherein a connecting rod (14) is fixedly mounted on the bottom end of one of the tooth plates (11), and a piston rod (17) adapted to the piston cylinder (16) is fixedly mounted on the surface of the other tooth plate (11), a through groove extending to the interior of the channel (7) is provided at the top end of the connecting block (4), and an opening and closing mechanism is provided at the outlet end of the outlet pipe (22); A groove (27) is symmetrically formed at the top end of the cylinder (101), a movable plate (28) is elastically connected to the inside of the groove (27), a push rod (29) extending into the cavity (2) is slidably connected to the center of the top end of the movable plate (28), and a triangular groove (30) is formed at the bottom end of the connecting block (4).

2. The monotube shock absorber according to claim 1, characterized in that The opening and closing mechanism comprises a slide groove (23) symmetrically arranged on the inner wall of the air outlet pipe (22), a first spring assembly (24) being fixedly mounted on the top end of the slide groove (23), a slide plate (25) being elastically connected to the inside of the slide groove (23) via the first spring assembly (24), and a disc (26) being fixedly mounted between the bottom ends of the two slide plates (25).

3. The monotube shock absorber according to claim 2, characterized in that The diameter of the through groove is the same as the diameter of the air outlet pipe (22).

4. The monotube shock absorber according to claim 1, characterized in that A fixing plate (31) is fixedly mounted on one side of the bottom end of the connecting block (4) close to the inner wall of the cavity (2), and a plurality of second spring assemblies (32) are fixedly mounted on the side of the fixing plate (31) facing the inner wall of the cavity (2).

5. The monotube shock absorber according to claim 1, characterized in that: The depth of the receiving groove (6) inside the arc-shaped scraper (5) gradually increases from the two ends to the middle.

6. The monotube shock absorber according to claim 1, characterized in that The diameter of the pressure strip (18) is greater than the diameter of the two arc-shaped scrapers (5) when combined.

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