Damping-adjustable shock absorber

Abstract

The damping-adjustable shock absorber comprises a bottom valve, the bottom valve comprises a shell, a connecting mechanism is arranged on the outer side of the shell, the connecting mechanism comprises a fixing shell, two sets of clamping grooves are formed in the top end of the fixing shell, two limiting rods are connected into each set of clamping grooves in a clamped mode, and an upper cylinder body is fixedly connected to the inner wall of the shell; a lower cylinder body is fixedly connected to the inner wall of the fixing shell, two grooves are formed in the inner wall of the lower cylinder body, a sliding column is slidably connected into the lower cylinder body, a lower pressing plate is fixedly connected to the top end of the sliding column, a limiting ring is fixedly connected to the outer surface of a buffer plate, and the top end of the limiting ring is fixedly connected with the bottom end of a piston. And the positions of the buffer plate and the piston are fixed and limited through the limiting ring. And the top end of the limiting ring is fixedly connected with the bottom end of the piston, the positions of the buffer plate and the piston can be fixed and limited through the limiting ring, the problem that the buffer plate and the piston deviate and are unstable in the using process can be effectively avoided, and the shock absorber is more stable in use.

Description

Technical Field

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

[0002] Hydraulic shock absorption is a common shock absorption method in the automotive field. A piston is provided in the automobile shock absorber, and a shock absorber outer cylinder is mounted on the outside of the piston. An oil chamber is formed between the outer shell of the piston and the outer cylinder of the shock absorber. The oil chamber and the inner shell of the piston are filled with hydraulic oil, and a bottom valve is installed at the bottom of the outer shell of the piston. The piston rod and the shock absorber outer cylinder are respectively installed on the vehicle body and the wheel assembly. When the car vibrates up and down during driving, the piston reciprocates in the piston cylinder. When the piston is compressed, the piston moves to the bottom of its outer shell, and the hydraulic oil inside the piston enters the oil chamber through the bottom valve; when the piston is restored, the piston moves to the upper part of its outer shell, and the hydraulic oil in the oil chamber replenishes the hydraulic oil inside the piston through the bottom valve.

[0003] Chinese patent CN213628652U discloses a bottom valve of a hydraulic shock absorber, which belongs to the field of hydraulic shock absorption technology. It includes a valve seat, a valve bonnet is buckled on the top of the valve seat, a valve seat channel is arranged inside the valve seat, a valve bonnet channel is opened on the valve bonnet, a valve plate and a compression valve body are placed in sequence above the valve seat, an elastic member is placed at the upper port of the valve seat channel, and the elastic member pushes the valve plate to form a gap between the valve plate and the valve seat. In the bottom valve of this hydraulic shock absorber, by setting the elastic member, the connection between the damping force value provided by the piston in the hydraulic shock absorber and the damping force value provided by the valve plate is more relaxed. However, in the bottom valve of the hydraulic shock absorber, no limiting mechanism is set between the compression valve body, the elastic member and the valve seat, and the problem of offset instability is prone to occur during use. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a damping adjustable shock absorber which is more stable when used.

[0005] The technical solution adopted by the present invention to solve the above-mentioned technical problems is: a damping adjustable shock absorber includes a bottom valve, the bottom valve includes an outer shell, a connecting mechanism is arranged on the outer side of the outer shell, the connecting mechanism includes a fixed shell, two groups of slots are opened on the top of the fixed shell, two limit rods are clamped inside each group of slots, an upper cylinder body is fixedly connected to the inner wall of the outer shell, a lower cylinder body is fixedly connected to the inner wall of the fixed shell, two grooves are opened on the inner wall of the lower cylinder body, a sliding column is slidably connected to the interior of the lower cylinder body, a lower pressure plate is fixedly connected to the top of the sliding column, a limiting ring is fixedly connected to the outer surface of the buffer plate, the top of the limiting ring is fixedly connected to the bottom end of the piston, and the position of the buffer plate and the piston is fixedly limited by the limiting ring.

[0006] Preferably, the inner wall of the lower cylinder body is fixedly connected to a fixed base, a second spring is arranged on the outer side of the sliding column, and two limit seats are fixedly connected to the outer surface of the second spring, and the ends of the two limit seats away from each other are respectively fixedly connected to the bottom end of the lower pressure plate and the inner wall of the fixed base, so that the position of the second spring is limited by the limit seats.

[0007] Preferably, a sealing ring is provided on the outer side of the outer shell, the bottom end of the sealing ring contacts the top end of the fixed shell, and the outer shell and the fixed shell are sealed by the sealing ring.

[0008] Preferably, the top ends of the two groups of limit rods are commonly fixedly connected to a fixing ring, the outer surface of the fixing ring is fixedly connected to two fixing columns, the inner wall of each fixing column is threadedly connected to a fixing bolt, the outer surface of each group of limit rods is fixedly connected to two reinforcement rings, the top end of each group of reinforcement rings is fixedly connected to the bottom end of the fixing ring, and the limit rods and the fixing rings are reinforced by the reinforcement rings.

[0009] Preferably, the outer surface of the fixing bolt is threadedly connected to the inner wall of the fixing shell, the upper cylinder body is slidably connected to a piston, the top end of the piston is fixedly connected to a movable rod, the bottom end of the piston is fixedly connected to a buffer plate, a first spring is arranged above the piston, and the outer surface of the first spring is fixedly connected to two limit shells, the ends of the two limit shells that are away from each other are respectively fixedly connected to the top end of the piston and the inner wall of the upper cylinder body, and the position of the first spring is limited by the limit shell to prevent it from deflecting during operation.

[0010] The beneficial effects of the present invention are as follows: two grooves are provided on the inner wall of the lower cylinder body, a sliding column is slidably connected inside the lower cylinder body, a lower pressure plate is fixedly connected to the top of the sliding column, a limiting ring is fixedly connected to the outer surface of the buffer plate, and the top of the limiting ring is fixedly connected to the bottom end of the piston. The position of the buffer plate and the piston can be fixed and limited by the limiting ring, which can effectively avoid the problem of unstable displacement during use, making the shock absorber more stable when used. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the bottom valve of the damping adjustable shock absorber in the present invention;

[0012] Figure 2 It is a schematic diagram of the three-dimensional structure of the limiting rod in the present invention;

[0013] Figure 3 It is a three-dimensional structural schematic diagram of the movable rod in the present invention;

[0014] Figure 4 It is a schematic diagram of the three-dimensional structure of the card slot in the present invention;

[0015] Figure 5It is a schematic diagram of the three-dimensional structure of the fixed column in the present invention;

[0016] Figure 6 It is a schematic diagram of the three-dimensional structure of the first spring in the present invention;

[0017] Figure 7 It is a three-dimensional structural schematic diagram of the buffer plate in the present invention;

[0018] Figure 8 It is a schematic diagram of the three-dimensional structure of the second spring in the present invention.

[0019] In the figure: 1. outer shell; 2. connecting mechanism; 201. fixed shell; 202. fixed column; 203. movable rod; 204. fixed ring; 205. limit rod; 206. slot; 207. lower cylinder body; 208. fixing bolt; 209. upper cylinder body; 210. first spring; 211. piston; 212. lower pressure plate; 213. groove; 214. buffer plate; 215. second spring; 216. fixed base; 217. sliding column; 3. sealing ring; 4. reinforcement ring; 5. limit shell; 6. limit ring; 7. limit seat. DETAILED DESCRIPTION

[0020] The present invention will now be described in further detail in conjunction with the accompanying drawings and preferred embodiments. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0021] See also Figure 1 , Figure 2 and Figure 4 A damping adjustable shock absorber includes a bottom valve, the bottom valve includes a shell 1, a connecting mechanism 2 is arranged on the outer side of the shell 1, the connecting mechanism 2 includes a fixed shell 201, two groups of slots 206 are opened on the top of the fixed shell 201, two limit rods 205 are clamped inside each group of slots 206, a sealing ring 3 is arranged on the outer side of the shell 1, the bottom end of the sealing ring 3 is in contact with the top of the fixed shell 201, and the shell 1 and the fixed shell 201 can be sealed by the sealing ring 3 to prevent impurities in the outside air from entering the interior of the device, thereby enhancing the practicality of the device.

[0022] See also Figure 1 , Figure 2 and Figure 5The top ends of the two groups of limiting rods 205 are commonly fixedly connected with a fixing ring 204, the outer surface of the fixing ring 204 is fixedly connected with two fixing columns 202, the inner wall of each fixing column 202 is threadedly connected with a fixing bolt 208, the outer surface of each group of limiting rods 205 is fixedly connected with two reinforcing rings 4, the top end of each group of reinforcing rings 4 is fixedly connected to the bottom end of the fixing ring 204, and the limiting rods 205 and the fixing ring 204 can be reinforced by the reinforcing ring 4, which has a strong fixing effect and enhances the stability of the device.

[0023] See also Figure 1 , Figure 5 , Figure 6 and Figure 7 The outer surface of each fixing bolt 208 is threadedly connected to the inner wall of the fixed shell 201, the inner wall of the outer shell 1 is fixedly connected with the upper cylinder body 209, the inner wall of the fixed shell 201 is fixedly connected with the lower cylinder body 207, the interior of the upper cylinder body 209 is slidably connected with a piston 211, the top of the piston 211 is fixedly connected with a movable rod 203, the bottom of the piston 211 is fixedly connected with a buffer plate 214, a first spring 210 is arranged above the piston 211, the outer surface of the first spring 210 is fixedly connected with two limiting shells 5, the ends of the two limiting shells 5 away from each other are respectively fixedly connected with the top of the piston 211 and the inner wall of the upper cylinder body 209, through the limiting shell 5, the position of the first spring 210 can be limited to prevent it from shifting during operation.

[0024] See also Figure 6 , Figure 7 and Figure 8 Two grooves 213 are provided on the inner wall of the lower cylinder body 207, and a sliding column 217 is slidably connected inside the lower cylinder body 207. The top of the sliding column 217 is fixedly connected to the lower pressure plate 212, and the outer surface of the buffer plate 214 is fixedly connected to the limiting ring 6. The top of the limiting ring 6 is fixedly connected to the bottom end of the piston 211. The position of the buffer plate 214 and the piston 211 can be fixed and limited by the limiting ring 6, which can effectively avoid the problem of offset and instability during use.

[0025] See also Figure 6 and Figure 8 The inner wall of the lower cylinder body 207 is fixedly connected with a fixed base 216, and a second spring 215 is arranged on the outer side of the sliding column 217. The outer surface of the second spring 215 is fixedly connected with two limit seats 7. The ends of the two limit seats 7 that are away from each other are respectively fixedly connected with the bottom end of the lower pressure plate 212 and the inner wall of the fixed base 216. The position of the second spring 215 can be limited by the limit seat 7, which effectively avoids the problem of position displacement during operation.

[0026] When in use, first put the limit rod 205 into the slot 206, and then fix the fixing column 202 and the fixing shell 201 by rotating the fixing bolt 208, so that the fixing ring 204 can limit the position of the limit rod 205, thereby achieving the purpose of fixed limit and enhancing the use effect of the device. When it is necessary to replace the hydraulic oil inside the device and dredge the internal blockage, it is only necessary to rotate the fixing bolt 208 so that the fixing column 202 is no longer fixed to the fixing shell 201, so that the fixing ring 204 can be moved, thereby the limit rod 205 can be taken out of the slot 206, and then the hydraulic oil inside the lower cylinder body 207 can be directly replaced, and it is convenient to dredge the blocked part, thereby enhancing the applicability of the device.

[0027] The above description only describes the specific implementation mode of the present invention. Various examples do not limit the essential content of the present invention. After reading the description, ordinary technicians in the relevant technical field can modify or deform the specific implementation mode described above without departing from the essence and scope of the invention.

Claims

1. A damping adjustable shock absorber, comprising a bottom valve, the bottom valve comprising a housing (1), a connecting mechanism (2) being arranged on the outer side of the housing (1), the connecting mechanism (2) comprising a fixed shell (201), characterized in that: Two groups of slots (206) are provided at the top of the fixed shell (201), and two limit rods (205) are clamped inside each group of slots (206). An upper cylinder body (209) is fixedly connected to the inner wall of the outer shell (1), and a lower cylinder body (207) is fixedly connected to the inner wall of the fixed shell (201). Two grooves (213) are provided on the inner wall of the lower cylinder body (207). A sliding column (217) is slidably connected inside the lower cylinder body (207), and a lower pressure plate (212) is fixedly connected to the top of the sliding column (217). A limit ring (6) is fixedly connected to the outer surface of the buffer plate (214), and the top of the limit ring (6) is fixedly connected to the bottom end of the piston (211). The position of the buffer plate (214) and the piston (211) is fixedly limited by the limit ring (6).

2. The adjustable damping shock absorber according to claim 1, characterized in that: The inner wall of the lower cylinder body (207) is fixedly connected to a fixed base (216), a second spring (215) is arranged on the outer side of the sliding column (217), and the outer surface of the second spring (215) is fixedly connected to two limit seats (7), and the ends of the two limit seats (7) that are away from each other are respectively fixedly connected to the bottom end of the lower pressure plate (212) and the inner wall of the fixed base (216), and the position of the second spring (215) is limited by the limit seats (7).

3. The adjustable damping shock absorber according to claim 1, characterized in that: A sealing ring (3) is provided on the outer side of the outer shell (1), the bottom end of the sealing ring (3) is in contact with the top end of the fixed shell (201), and the outer shell (1) and the fixed shell (201) are sealed by the sealing ring (3).

4. The adjustable damping shock absorber according to claim 1, characterized in that: The top ends of the two groups of limit rods (205) are fixedly connected to a fixing ring (204); the outer surface of the fixing ring (204) is fixedly connected to two fixing columns (202); the inner wall of each fixing column (202) is threadedly connected to a fixing bolt (208); the outer surface of each group of limit rods (205) is fixedly connected to two reinforcement rings (4); the top end of each group of reinforcement rings (4) is fixedly connected to the bottom end of the fixing ring (204); the limit rods (205) and the fixing ring (204) are reinforced by the reinforcement ring (4).

5. The adjustable damping shock absorber according to claim 1, characterized in that: The outer surface of the fixing bolt (208) is threadedly connected to the inner wall of the fixing shell (201); the interior of the upper cylinder body (209) is slidably connected to a piston (211); the top end of the piston (211) is fixedly connected to a movable rod (203); the bottom end of the piston (211) is fixedly connected to a buffer plate (214); a first spring (210) is arranged above the piston (211); the outer surface of the first spring (210) is fixedly connected to two limiting shells (5); the ends of the two limiting shells (5) that are away from each other are fixedly connected to the top end of the piston (211) and the inner wall of the upper cylinder body (209), respectively; the position of the first spring (210) is limited by the limiting shell (5) to prevent it from being offset during operation.

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