A shock absorber structure for manually adjusting damping force

Abstract

The utility model discloses a shock absorber structure for manually adjusting damping force, comprising: an inner cylinder; an outer cylinder, which is coaxially sleeved on the outer side of the inner cylinder; an annular cavity is formed between the outer cylinder and the inner cylinder; an oil separator ring, whose inner and outer rings are respectively connected to the inner cylinder and the outer cylinder, and the annular cavity is divided into a first oil cavity and a second oil cavity; an adjusting valve seat, one end of which is connected to the outer wall of the outer cylinder and is communicated with the first oil cavity; an adjusting valve shell, one end of which is connected to the other end of the adjusting valve seat; an adjusting valve sleeve, which is coaxially fixedly arranged in the adjusting valve shell; a first adjusting hole, a second adjusting hole and a third adjusting hole, which are circular through holes on the adjusting valve sleeve; the first adjusting hole, the second adjusting hole and the third adjusting hole are spaced apart in the axial direction of the adjusting valve sleeve; and an adjusting valve core, which is coaxially arranged in the center through hole.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile and motorcycle shock absorbers, and particularly relates to a shock absorber structure for manually adjusting damping force. Background Art

[0002] Hydraulic shock absorbers are widely used in the automotive field to suppress the aftershock caused by the spring. The internal damping force is mainly generated by the cooperation of the oil holes and the valve plate. In the prior art, since the diameter of the oil holes and the damping of the valve plate are fixed, the damping force can only be adjusted at the factory and cannot be changed according to actual needs. As a result, the shock absorber cannot be adjusted accordingly with different vehicle working conditions, and cannot fully meet the requirements of the automobile suspension system for damping force, making it difficult to take into account both the ride comfort and handling stability of the vehicle.

[0003] In the prior art, the regulating valve is placed horizontally perpendicular to the outer cylinder. Such a design scheme is easy to interfere with other parts of the vehicle chassis, increasing the use space of the shock absorber, thereby reducing the chassis space, which is contrary to the concept of lightweight chassis. Most of the prior art uses the design scheme of adding an intermediate cylinder, which increases the manufacturing cost and process difficulty. It is not conducive to the wide application and promotion of the product. Utility Model Content

[0004] The utility model aims to solve the defect that the damping force of the shock absorber cannot be adjusted according to the actual road conditions, and provides a shock absorber structure for manually adjusting the damping force, which has a simple structure and realizes manual stepless adjustment of the damping force of the shock absorber.

[0005] The technical solution provided by the utility model is:

[0006] A shock absorber structure for manually adjusting damping force, comprising:

[0007] The inner cylinder is a hollow cylindrical structure;

[0008] The outer cylinder is a hollow cylindrical structure; the outer cylinder is coaxially sleeved on the outer side of the inner cylinder; an annular cavity is formed between the outer cylinder and the inner cylinder;

[0009] An oil separator ring, which is annular; the inner and outer rings of the oil separator ring are respectively connected to the inner cylinder barrel and the outer cylinder barrel, dividing the annular cavity into a first oil chamber and a second oil chamber;

[0010] A regulating valve seat, which is a hollow cylindrical structure, one end of which is connected to the outer wall of the outer cylinder and is communicated with the first oil chamber;

[0011] A regulating valve housing, one end of which is connected to the other end of the regulating valve seat; the axis of the regulating valve housing is parallel to the axis of the outer cylinder;

[0012] A regulating valve sleeve is coaxially fixedly arranged in the regulating valve housing; the regulating valve sleeve is provided with a central through hole, one end of which is communicated with the regulating valve seat; a regulating valve oil chamber is formed between the regulating valve sleeve and the regulating valve housing, and the regulating valve oil chamber is communicated with the second oil chamber through a connecting oil pipe;

[0013] The first regulating hole, the second regulating hole and the third regulating hole are circular through holes provided on the regulating valve sleeve and are respectively connected with the central through hole; the first regulating hole, the second regulating hole and the third regulating hole are spaced apart in the axial direction of the regulating valve sleeve;

[0014] A regulating valve core is coaxially arranged in the central through hole; the regulating valve core is threadedly connected to the other end of the regulating valve housing; and the regulating valve core can be moved axially along the central through hole by rotating the regulating valve core.

[0015] Preferably, it also includes: a base connected to the outer cylinder and one end of the inner cylinder; and a bottom valve system assembly matchedly connected to the base.

[0016] Preferably, it further comprises: a piston rod, one end of which is provided with a piston assembly; the other end of the piston rod is connected to the outer cylinder barrel and the inner cylinder barrel through a guide sleeve.

[0017] Preferably, an oil seal is provided on the outer wall of the piston rod; and the oil seal is coaxially sleeved in the guide sleeve.

[0018] Preferably, it further comprises: a locking nut having a threaded hole at the center thereof, the regulating valve core being arranged in the threaded hole and threadedly connected to the locking nut; and an outer wall of the locking nut being connected to the regulating valve housing.

[0019] Preferably, the diameter of the second adjustment hole is larger than the diameter of the first adjustment hole and smaller than the diameter of the third adjustment hole.

[0020] Preferably, O-rings are provided at the connection between the guide sleeve and the outer cylinder, at the connection between the regulating valve core and the regulating valve sleeve, and at the connection between the regulating valve sleeve and the regulating valve housing to seal the connection.

[0021] The beneficial effects of the utility model are as follows: the shock absorber structure for manually adjusting the damping force provided by the utility model has a simple structure and realizes manual stepless adjustment of the damping force of the shock absorber. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the overall structure of the shock absorber structure for manually adjusting the damping force described in the utility model.

[0023] Figure 2This is a schematic diagram of the piston rod structure of the utility model.

[0024] Figure 3 It is a schematic diagram of the structure of the bottom valve system assembly described in the utility model.

[0025] Figure 4 This is a schematic diagram of the structure of the regulating valve assembly described in the utility model. DETAILED DESCRIPTION

[0026] The present invention will be further described in detail below in conjunction with the accompanying drawings so that those skilled in the art can implement the invention with reference to the description.

[0027] like Figure 1 As shown, the utility model provides a shock absorber structure for manually adjusting damping force, which includes: an inner cylinder 120, which is a hollow cylindrical structure; an outer cylinder 110, which is a hollow cylindrical structure; the outer cylinder 110 is coaxially sleeved on the outer side of the inner cylinder 120; an annular cavity is formed between the outer cylinder 110 and the inner cylinder 120; an oil separator ring 130, which is annular; a base 140, a first oil port 221 is arranged on the side of the base 140; one end of the outer cylinder 110 and the inner cylinder 120 is connected to the base 140; a bottom valve system assembly 170, which matches and connects to the base 140; the inner ring of the oil separator ring 130 is welded to the inner cylinder 120. After the bottom valve system assembly 170 is assembled to the base 140, the base 140 and the inner cylinder 120 are press-fitted, and the press-fitted assembly is installed in the outer cylinder 110. The outer ring of the oil separator ring 130 and the base 140 are welded and fixed to the outer cylinder 110. After the oil separator ring 130 is connected to the inner cylinder 120 and the outer cylinder 110, the annular cavity is divided into a first oil The piston rod 150 has a piston assembly 160 at one end; the piston rod 150 is connected to the outer cylinder 110 and the inner cylinder 120 at the other end through a guide sleeve 151; a regulating valve assembly 180 is arranged parallel to the outer cylinder 110 and connected to the outer wall of the outer cylinder 110; one end of the regulating valve assembly 180 is directly connected to the outer wall of the outer cylinder 110, and a second oil port 222 is arranged at the connection; the other end of the regulating valve assembly 180 is connected to the outer cylinder 110 through a connecting oil pipe 190. The outer wall of the cylinder 110 is connected, and a fourth oil port 224 is arranged at the connection; a third oil chamber 213 is formed between the piston rod 150 and the inner cylinder 120; a fourth oil chamber 214 is formed between the piston assembly 160 and the bottom valve system assembly 170; a fifth oil chamber 215 is formed between the bottom valve system assembly 170 and the base 140; a third oil port 223 is arranged at the connection between the regulating valve assembly 180 and the connecting oil pipe 190; a fifth oil port 225 is arranged at a position of the inner cylinder 120 close to the connection with the guide sleeve 151.

[0028] The first oil chamber 211 is connected to the regulating valve assembly 180 through the second oil port 222; the regulating valve assembly 180 is connected to the connecting oil pipe 190 through the third oil port 223; the connecting oil pipe 190 is connected to the second oil chamber 212 through the fourth oil port 224; the second oil chamber 212 is connected to the third oil chamber 213 through the fifth oil port 225; the fifth oil chamber 215 is connected to the first oil chamber 211 through the first oil port 221; the first oil chamber 211 and the second oil chamber 212 are separated by the regulating valve assembly 180; the third oil chamber 213 and the fourth oil chamber 214 are separated by the piston assembly 160; the fourth oil chamber 214 and the fifth oil chamber 215 are separated by the bottom valve system assembly 170.

[0029] When the piston rod 150 moves downward, the piston assembly 160 squeezes the oil in the fourth oil chamber 214 downward, and the oil enters the fifth oil chamber 215 through the bottom valve system assembly 170. The oil in the fifth oil chamber 215 flows through the first oil port 221, the first oil chamber 211 and the second oil port 222 in sequence to enter the regulating valve assembly 180. After the oil flow is adjusted by the regulating valve assembly 180, it flows through the connecting oil pipe 190 and the fourth oil port 224 in sequence to enter the second oil chamber 212. Since the second oil chamber 212 is connected to the third oil chamber 213, the oil enters the third oil chamber 213 through the fifth oil port 225.

[0030] When the piston rod 150 moves upward, the oil in the third oil chamber 213 enters the second oil chamber 212 through the fifth oil port 225, and the oil in the second oil chamber 212 flows through the fourth oil port 224 and the connecting oil pipe 190 in turn to enter the regulating valve assembly 180. After the flow rate of the oil is adjusted by the regulating valve assembly 180, the oil flows through the second oil port 222, the first oil chamber 211 and the first oil port 221 in turn to enter the fifth oil chamber 215, and the piston assembly 160 draws the oil in the fourth oil chamber 214 upward, so that the oil in the fourth oil chamber 214 flows to the third oil chamber 213 through the piston assembly 160, thereby causing the oil in the fifth oil chamber 215 to flow to the fourth oil chamber 214 through the bottom valve system assembly 170.

[0031] The oil flow rate is adjusted by the regulating valve assembly 180, thereby adjusting the damping force between the cavities.

[0032] like Figure 2As shown, an oil seal 152 is provided on the outer wall of the piston rod 150; the oil seal 152 is coaxially sleeved in the guide sleeve 151; a first O-ring 311 is provided at the connection between the guide sleeve 151 and the outer cylinder 110 to seal the connection and prevent oil leakage.

[0033] The piston assembly 160 includes: a first piston through hole 161 and a second piston through hole 162, which are through holes arranged in the piston assembly 160; a piston lower gate plate 163, which covers the bottom end of the first through hole 161; and a piston upper gate plate 164, which covers the top end of the second piston through hole 162.

[0034] When the piston rod 150 moves downward, the upper piston gate plate 164 covers the second piston through hole 162, the lower piston gate plate 163 opens, and the oil passes through the first piston through hole 161 and enters the fourth oil chamber 214 from the third oil chamber 213; when the piston rod 150 moves upward, the lower piston gate plate 163 covers the first piston through hole 161, the upper piston gate plate 164 opens, and the oil passes through the second piston through hole 162 and enters the third oil chamber 213 from the fourth oil chamber 214; thereby completing the flow of oil in different directions.

[0035] like Figure 3 As shown, the bottom valve system assembly 170 includes: a first through hole 172 and a second through hole 173, which are through holes arranged in the bottom valve system assembly 170; an upper valve plate 175, which covers the top of the second through hole 173; an upper valve port 171, which is arranged next to the upper valve plate 175 and is connected to the first through hole 172; a lower valve plate 174, which covers the bottom end of the first through hole 172; a hexagonal bolt 176, which passes through the bottom valve system assembly 170 and is used to fix the upper valve plate 175 and the lower valve plate 174; the hexagonal bolt 176 and the upper valve plate 175 are connected by a spring 177.

[0036] When the piston rod 150 moves downward, the spring 177 is released, the upper valve plate 175 covers the second through hole 173, the lower valve plate 174 opens, and the oil passes through the upper valve port 171 and the first through hole 172, and enters the fifth oil chamber 215 from the fourth oil chamber 214, completing the flow of oil in the bottom valve system assembly 170; when the piston rod 150 moves upward, the lower valve plate 174 covers the first through hole 172, the spring 177 contracts, the upper valve plate 175 opens, and the oil passes through the second through hole 173, and enters the fourth oil chamber 214 from the fifth oil chamber 215, completing the flow of oil in the bottom valve system assembly 170.

[0037] like Figure 4As shown, the regulating valve assembly 180 includes: a regulating valve seat 184, which is a hollow cylindrical structure, one end of which is connected to the outer wall of the outer cylinder 110 and is communicated with the first oil chamber 211; a regulating valve housing 185, one end of which is connected to the other end of the regulating valve seat 184, and the axis of the regulating valve housing 185 is parallel to the axis of the outer cylinder 110; the regulating valve housing 185 is connected to the outer cylinder 110 through a connecting oil pipe 190; a regulating valve sleeve 186, which is coaxially fixedly arranged in the regulating valve housing 185; the regulating valve sleeve 185 is provided with a central through hole, the One end of the central through hole is connected to the regulating valve seat 184; a regulating valve oil chamber 216 is formed between the regulating valve sleeve 186 and the regulating valve housing 185, and the regulating valve oil chamber 216 is connected to the second oil chamber 212 through the connecting oil pipe 190; the first regulating hole 181, the second regulating hole 182 and the third regulating hole 183 are circular through holes provided on the regulating valve sleeve 185, and are respectively connected to the central through hole; the first regulating hole 181, the second regulating hole 182 and the third regulating hole 183 are spaced apart in the axial direction of the regulating valve sleeve 186 The diameter of the second regulating hole 182 is larger than that of the first regulating hole 181 and smaller than that of the third regulating hole 183; the regulating valve core 187 is coaxially arranged in the central through hole; the locking nut 188 has a threaded hole in the center, and the regulating valve core 187 is arranged in the threaded hole and is threadedly connected to the locking nut 188; the outer wall of the locking nut 188 is connected to the other end of the regulating valve housing 185; by rotating the regulating valve core 187, the regulating valve core 187 can be moved along the axial direction of the central through hole; the outer cylinder 110 and the regulating valve seat 1 84 is provided with the second oil port 222; the third oil port 223 is provided at the connection between the regulating valve housing 185 and the connecting oil pipe 190; the first oil chamber 211 is connected with the regulating valve seat 184 through the second oil port 222; the regulating valve oil chamber 216 is connected with the connecting oil pipe 190 through the third oil port 223; a second O-ring 312 is provided at the connection between the regulating valve sleeve 186 and the regulating valve housing 185, and a third O-ring 313 is provided at the connection between the regulating valve core 187 and the regulating valve sleeve 186, so that the connection is sealed to prevent oil leakage.

[0038] When the regulating valve core 187 moves upward, the area and number of the opened regulating holes increase, and the amount of oil flowing through the regulating holes increases; conversely, when the regulating valve core 187 moves downward, the area and number of the opened regulating holes decrease, and the amount of oil flowing through the regulating holes decreases.

[0039] When the piston rod 150 moves downward, the oil flows from the fifth oil chamber 215 through the first oil port 221, the first oil chamber 211, the second oil port 222 and the regulating valve seat 184 in sequence into the regulating valve sleeve 186. By rotating the regulating valve core 187, the regulating valve core 187 moves up and down to control the opening or closing of the first regulating hole 181, the second regulating hole 182 and the third regulating hole 183, thereby controlling the amount of oil passing through. The oil enters the regulating valve oil chamber 216 through the regulating hole, and enters the second oil chamber 212 through the third oil port 223, the connecting oil pipe 190 and the fourth oil port 224 in sequence, completing the flow of oil in the regulating valve assembly 180. When the piston rod 150 moves upward, the oil flows from the second oil chamber 212 through the fourth oil port 224, the connecting oil pipe 190 and the third oil port 223 into the regulating valve oil chamber 216. By rotating the regulating valve core 187, the regulating valve core 187 moves up and down to control the opening or closing of the first regulating hole 181, the second regulating hole 182 and the third regulating hole 183, thereby controlling the amount of oil passing through. The oil enters the regulating valve sleeve 186 through the regulating hole, and flows through the regulating valve seat 184, the second oil port 222, the first oil chamber 211 and the first oil port 221 in turn to enter the fifth oil chamber 215, completing the flow of oil in the regulating valve assembly 180.

[0040] By controlling the number and area of ​​the first adjustment hole 181, the second adjustment hole 182 and the third adjustment hole 183 that are opened, the oil pressure is adjusted to achieve stepless adjustment of the damping force of the shock absorber.

[0041] The utility model provides a shock absorber structure for manually adjusting the damping force, and the control method is easy to use, so as to realize manual stepless adjustment of the damping force of the shock absorber, and the structure is simple, and the space occupied by the vehicle chassis is reduced; by adjusting the number of oil through holes and the increase or decrease of the gap, the amount of oil flowing can be accurately adjusted, the amount of oil flowing can be adjusted steplessly and continuously, and the damping force between the internal cavities of the shock absorber can be adjusted in advance according to the driving road conditions, so as to improve the stability, driving comfort and controllability of the vehicle body under various road conditions, and experience a safer and more comfortable driving experience, simplify the structure, reduce the manufacturing cost and maintenance difficulty of the shock absorber, and effectively control the product cost.

[0042] Although the implementation scheme of the utility model has been disclosed as above, it is not limited to the applications listed in the specification and implementation modes. It can be fully applied to various fields suitable for the utility model. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the utility model is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A shock absorber structure for manually adjusting damping force, characterized in that: include: The inner cylinder is a hollow cylindrical structure; The outer cylinder is a hollow cylindrical structure; the outer cylinder is coaxially sleeved on the outer side of the inner cylinder; An annular cavity is formed between the outer cylinder and the inner cylinder; An oil separator ring, which is annular; the inner and outer rings of the oil separator ring are respectively connected to the inner cylinder barrel and the outer cylinder barrel, dividing the annular cavity into a first oil chamber and a second oil chamber; A regulating valve seat, which is a hollow cylindrical structure, one end of which is connected to the outer wall of the outer cylinder and is communicated with the first oil chamber; A regulating valve housing, one end of which is connected to the other end of the regulating valve seat; the axis of the regulating valve housing is parallel to the axis of the outer cylinder; A regulating valve sleeve is coaxially fixedly arranged in the regulating valve housing; the regulating valve sleeve is provided with a central through hole, one end of which is communicated with the regulating valve seat; a regulating valve oil chamber is formed between the regulating valve sleeve and the regulating valve housing, and the regulating valve oil chamber is communicated with the second oil chamber through a connecting oil pipe; The first regulating hole, the second regulating hole and the third regulating hole are circular through holes provided on the regulating valve sleeve and are respectively connected with the central through hole; the first regulating hole, the second regulating hole and the third regulating hole are spaced apart in the axial direction of the regulating valve sleeve; A regulating valve core is coaxially arranged in the central through hole; the regulating valve core is threadedly connected to the other end of the regulating valve housing; and the regulating valve core can be moved axially along the central through hole by rotating the regulating valve core.

2. The shock absorber structure for manually adjusting the damping force according to claim 1, characterized in that: Also includes: A base connected to the outer cylinder and one end of the inner cylinder; The bottom valve system assembly is matched and connected in the base.

3. The shock absorber structure for manually adjusting damping force according to claim 1, characterized in that: Also includes: A piston rod has a piston assembly at one end; the piston rod is connected to the outer cylinder barrel and the other end of the inner cylinder barrel through a guide sleeve.

4. The shock absorber structure for manually adjusting the damping force according to claim 3, characterized in that: An oil seal is arranged on the outer wall of the piston rod; and the oil seal is coaxially sleeved in the guide sleeve.

5. The shock absorber structure for manually adjusting the damping force according to claim 1, characterized in that: Also includes: The locking nut has a threaded hole at its center, the regulating valve core is arranged in the threaded hole and is threadedly connected to the locking nut; the outer wall of the locking nut is connected to the regulating valve housing.

6. The shock absorber structure for manually adjusting the damping force according to claim 1, characterized in that: The diameter of the second adjustment hole is larger than the diameter of the first adjustment hole and smaller than the diameter of the third adjustment hole.

7. The shock absorber structure for manually adjusting damping force according to claim 3, characterized in that: O-rings are provided at the connection between the guide sleeve and the outer cylinder, at the connection between the regulating valve core and the regulating valve sleeve, and at the connection between the regulating valve sleeve and the regulating valve housing to seal the connection.

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