External electromagnetic valve type shock absorber intermediate cylinder forming system

Abstract

The invention provides an external electromagnetic valve type shock absorber intermediate cylinder forming system which simplifies the structure of an intermediate cylinder and reduces the number of parts of a shock absorber. The present invention comprises: a working cylinder; the piston assembly comprises a piston valve and a piston rod; the middle cylinder is an oil storage cylinder; a solenoid valve; an electromagnetic valve connecting sleeve; the connector assembly is used for installing the electromagnetic valve to the middle cylinder and the oil storage cylinder; the outer circumference of the bottom valve is provided with a first stop boss at the radial inner end for sleeving the working cylinder and a second stop boss at the radial middle end for sleeving the middle cylinder; the outer circumference of the guider is provided with a third stop boss which is arranged at the radial inner end of the working cylinder in a sleeving manner and a fourth stop boss which is arranged at the radial middle end of the middle cylinder in a sleeving manner; the two ends of the working cylinder in the length direction are located on the outer circumference of the first stopping boss and the outer circumference of the third stopping boss in a sealed and fixed sleeving mode respectively, and the two ends of the middle cylinder in the length direction are located on the outer circumference of the second stopping boss and the outer circumference of the fourth stopping boss in a sealed and fixed sleeving mode respectively.

Description

Technical Field

[0001] The invention relates to the technical field of shock absorbers of a passenger vehicle suspension system, in particular to an intermediate cylinder constituting system of an external electromagnetic valve type shock absorber. Background Art

[0002] At present, the intermediate cylinder of the electrically controlled resistance adjustable external solenoid valve shock absorber has two ends with reduced diameters and annular grooves on the inner walls of the two ends, with sealing rings embedded in the annular grooves, which are tightly sleeved on the working cylinder to form a chamber with the working cylinder. A through hole connected to the intermediate cylinder is opened on the wall of the working cylinder. This structure has the problem that the processing technology of the intermediate cylinder is complicated, and when the working cylinder is inserted into the intermediate cylinder, the sealing ring, especially the through hole on the working cylinder, is easily scratched, causing leakage problems. Summary of the invention

[0003] In view of the above problems, the present invention provides an external electromagnetic valve shock absorber intermediate cylinder system, which simplifies the structure of the intermediate cylinder, reduces the components of the shock absorber, simplifies the assembly process and reduces the cost.

[0004] The external electromagnetic valve type shock absorber intermediate cylinder constitutes a system, characterized in that it includes:

[0005] Working cylinder;

[0006] A piston assembly, comprising a piston valve and a piston rod;

[0007] Intermediate cylinder

[0008] Oil storage tank;

[0009] Solenoid valve;

[0010] Solenoid valve connecting sleeve;

[0011] A connector assembly, which is used to install the solenoid valve to the intermediate cylinder and the oil storage cylinder;

[0012] The bottom valve has a first radial inner stop boss for sleeve-mounting the working cylinder and a second radial middle stop boss for sleeve-mounting the intermediate cylinder on its outer circumference;

[0013] and a guide, on the outer circumference of which a third stop boss at the radial inner end for sleeve-mounting the working cylinder and a fourth stop boss at the radial middle end for sleeve-mounting the intermediate cylinder are arranged;

[0014] The outer ring sleeve of the working cylinder is provided with an intermediate cylinder, and a cavity gap is left. The outer circumference sleeve of the intermediate cylinder is provided with the oil storage cylinder, and a cavity gap is left. A bottom valve is provided at the bottom position of the inner cavity of the oil storage cylinder corresponding to the working cylinder. A guide is provided at the top position of the inner cavity of the oil storage cylinder corresponding to the working cylinder. The piston rod passes through the guide and is connected to the piston valve located in the working cylinder.

[0015] The two ends of the working cylinder in the length direction are respectively sealed and fixedly positioned on the outer circumference of the first stop boss and the outer circumference of the third stop boss, and the two ends of the intermediate cylinder in the length direction are respectively sealed and fixedly positioned on the outer circumference of the second stop boss and the outer circumference of the fourth stop boss.

[0016] It is further characterized by:

[0017] The first stop boss is located at the axial upper end of the second stop boss, and the third stop boss is located at the axial lower end of the fourth stop boss, which makes the axial length of the working cylinder smaller than the axial length of the intermediate cylinder, facilitating the assembly of the entire system from the inside out;

[0018] The joint assembly includes an intermediate ring, an oil guide sleeve, and a pressure ring. The intermediate ring includes a lower convex end and a horizontal ring. The oil guide sleeve includes a lower convex sleeve and an upper stop ring. The outer diameter of the upper stop ring is larger than the diameter of the lower convex sleeve. A plurality of oil guide holes are arranged on the circumference of the pressure ring.

[0019] The intermediate cylinder is provided with an oil flow hole corresponding to the installation position of the solenoid valve, and an outer convex boss is provided on the outer wall of the intermediate cylinder corresponding to the oil flow hole, and the outer surface of the outer convex boss is a plane structure, and the oil storage is provided with an installation avoidance hole corresponding to the installation position of the solenoid valve, the working cylinder and the intermediate cylinder enclose a first cavity, and the intermediate cylinder and the oil storage cylinder enclose a second cavity, the lower convex end of the intermediate ring is inserted into the oil flow hole, and the lower surface of the horizontal ring of the intermediate ring is tightly attached to the outer surface of the outer convex boss, and the plane is sealed, and the solenoid valve connecting sleeve is fixed at the corresponding position of the installation avoidance hole of the oil storage cylinder. The inner end of the outer circumference of the pressure ring is arranged in close contact with the outer surface of the inner end side convex stop mounting ring, the inner end of the upper stop ring of the oil guide sleeve is pressed on the corresponding surface of the inner circumference of the pressure ring, and the plane is sealed and fitted, the lower convex sleeve of the oil guide sleeve passes through the center hole of the pressure ring and is convexly arranged, the inner end of the central column cavity of the oil guide sleeve is connected to the first cavity, the upper end of the central column cavity is connected to the inner cavity of the solenoid valve, the solenoid valve is connected to the internal thread part of the sleeve body of the solenoid valve connecting sleeve through the external thread, the valve hole of the solenoid valve is connected to the oil guide hole of the pressure ring through the corresponding inner cavity of the sleeve body, and the oil guide hole is connected to the second cavity through the installation avoidance hole;

[0020] An outer convex boss is arranged on the outer wall of the intermediate cylinder corresponding to the oil flow hole, and the outer surface of the outer convex boss is a plane structure, which is pressed onto the outer convex boss through the plane of the intermediate ring, and then inserted into the intermediate ring through the intermediate sleeve, and the horizontal ring of the intermediate sleeve is pressed onto the radial inner end of the pressure ring, and the inner end of the outer ring circumference of the pressure ring is arranged close to the outer surface of the convex stop mounting ring on the inner end side, and when the solenoid valve is tightened, the oil guide sleeve is limited by the pressure ring to prevent the working cylinder from tilting; even if the oil guide sleeve has a partial retraction stroke, the distance between the lower end of the lower convex sleeve of the oil guide sleeve and the inner ring cavity of the intermediate ring can directly offset this retraction stroke, so that when the solenoid valve is tightened, the oil guide sleeve will not touch the working cylinder, thereby ensuring that the working cylinder will not tilt;

[0021] Preferably, the portion of the lower convex sleeve extending into the inner ring cavity of the intermediate ring is a reduced diameter structure, the outer ring of the reduced diameter structure is arranged with a reduced radial thickness, and the outer ring circumference of the reduced diameter structure is arranged closely against the ring wall of the inner ring cavity;

[0022] A first O-ring is also provided between the outer circumference of the reduced diameter structure and the annular wall of the inner annular cavity, which ensures that the oil will not leak through the gap between the reduced diameter structure and the inner annular cavity;

[0023] A second O-ring is provided between the lower surface of the horizontal ring of the intermediate ring and the outer surface of the outer convex boss to ensure sealing reliability;

[0024] A third O-ring is provided between the upper stop ring of the oil guide sleeve and the lower surface of the solenoid valve to ensure reliable sealing;

[0025] A gap is left between the outer surface of the intermediate ring and the outer diameter end and the oil storage cylinder to ensure normal flow between the oil in the second chamber and the oil guide hole.

[0026] After adopting the present invention, a straight-cylinder intermediate cylinder is adopted, and the axial ends of the intermediate cylinder are not reduced in diameter, and the annular groove is eliminated, thereby eliminating the sealing ring between the working cylinder and the intermediate cylinder. The axial ends of the intermediate cylinder are respectively press-fitted with the corresponding stop bosses of the bottom valve and the guide, thereby forming a chamber with the working cylinder. The structure of the intermediate cylinder is simplified, and the molds for processing the intermediate cylinder are reduced, the process is simplified, and the cost is reduced. The sealing ring components of the shock absorber intermediate cylinder and the working cylinder are reduced, thereby eliminating the leakage problem caused by the failure of the sealing ring. When the shock absorber assembly is assembled, the bottom valve, the working cylinder, and the intermediate cylinder are simultaneously assembled and sealed by the corresponding stop bosses, and the guide is simultaneously assembled and sealed by the corresponding stop bosses, thereby reducing the assembly process of the shock absorber assembly. The structure of the intermediate cylinder is simplified, and the components of the shock absorber are reduced, thereby simplifying the assembly process and reducing the cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of the existing external solenoid valve shock absorber intermediate cylinder system;

[0028] Figure 2 A schematic diagram of the structure of the invention;

[0029] Figure 3 It is a detailed view of another specific embodiment of the connector assembly of the present invention;

[0030] Figure 4 for Figure 3 A local enlarged schematic diagram of point A;

[0031] The names corresponding to the serial numbers in the figure are as follows:

[0032] First O-ring 1, second O-ring 2, third O-ring 3, gap 4;

[0033] Working cylinder 10, intermediate cylinder 20, oil circulation hole 21, external convex boss 22, oil storage cylinder 30, installation avoidance hole 31, solenoid valve 40, solenoid valve connecting sleeve 50, side convex stop mounting ring 51, sleeve body 52, inner cavity 53, intermediate ring 60, lower convex end 61, horizontal ring 62, inner ring cavity 63, oil guide sleeve 70, lower convex sleeve 71, reducing structure 711, upper stop ring 72, central column cavity 73, pressure ring 80, oil guide hole 81, central hole 82, piston assembly 90, piston valve 91, piston rod 92, joint assembly 100, bottom valve 110, first stop boss 111, second stop boss 112, guide 120, third stop boss 121, fourth stop boss 122, first cavity 130, second cavity 140. DETAILED DESCRIPTION

[0034] External solenoid valve shock absorber intermediate cylinder system, see Figure 2-Figure 4 , which includes a working cylinder 10, an intermediate cylinder 20, an oil storage cylinder 30, a solenoid valve 40, a solenoid valve connecting sleeve 50, a piston assembly 90, a joint assembly 100, a bottom valve 110, and a guide 120;

[0035] A piston assembly 90, which includes a piston valve 91 and a piston rod 92;

[0036] A joint assembly 100, which is used to install the solenoid valve 40 to the intermediate cylinder 20 and the oil storage cylinder 30;

[0037] The outer circumference of the bottom valve 110 is provided with a radial inner end first stop boss 111 for sleeve-mounting the working cylinder 10 and a radial middle end second stop boss 112 for sleeve-mounting the intermediate cylinder 20;

[0038] The outer circumference of the guide 120 is provided with a radial inner third stop boss 121 for sleeve mounting the working cylinder 10 and a radial middle fourth stop boss 122 for sleeve mounting the intermediate cylinder 20;

[0039] The outer ring sleeve of the working cylinder 10 is provided with an intermediate cylinder 20, and a cavity gap is left. The outer circumference of the intermediate cylinder 20 is provided with an oil storage cylinder 30, and a cavity gap is left. A bottom valve 110 is provided at the bottom position of the inner cavity of the oil storage cylinder 30 corresponding to the working cylinder 10, and a guide 120 is provided at the inner cavity of the oil storage cylinder 30 corresponding to the top position of the working cylinder 10. The piston rod 92 passes through the guide 120 and is connected to the piston valve 91 located in the working cylinder 10.

[0040] The two ends of the working cylinder 10 in the length direction are sealed and fixedly positioned on the outer circumference of the first stop boss 111 and the outer circumference of the third stop boss 121, and the two ends of the intermediate cylinder 20 in the length direction are sealed and fixedly positioned on the outer circumference of the second stop boss 112 and the outer circumference of the fourth stop boss 122.

[0041] In specific implementation, the first stop boss 111 is located at the axial upper end of the second stop boss 112, and the third stop boss 121 is located at the axial lower end of the fourth stop boss 122, which makes the axial length of the working cylinder 10 smaller than the axial length of the intermediate cylinder 20, facilitating the assembly of the entire system from the inside out.

[0042] Specific implementation method 1: the joint assembly adopts and Figure 1 The same joint assembly as in (which is an existing mature structure and will not be described in detail).

[0043] Specific implementation method 2: connector assembly 100 (see Figure 3 and Figure 4 ) includes an intermediate ring 60, an oil guide sleeve 70, and a pressure ring 80. The intermediate ring 60 includes a lower convex end 61 and a horizontal ring 62. The oil guide sleeve 70 includes a lower convex sleeve 71 and an upper stop ring 72. The outer diameter of the upper stop ring 72 is greater than the diameter of the lower convex sleeve 71. A plurality of oil guide holes 81 are arranged on the circumference of the pressure ring 80.

[0044] An oil flow hole 21 is provided at the inner end of the intermediate cylinder 20 corresponding to the installation position of the electromagnetic valve 40, and an outer convex boss 22 is provided on the outer wall of the intermediate cylinder 20 corresponding to the oil flow hole 21, and the outer surface of the outer convex boss 22 is a plane structure; the oil storage cylinder 30 is provided with an installation avoidance hole 31 corresponding to the installation position of the electromagnetic valve 40, the working cylinder 10 and the intermediate cylinder 20 form a first cavity 130, and the intermediate cylinder 20 and the oil storage cylinder 30 form a second cavity 140, the lower surface of the horizontal ring 61 of the intermediate ring 60 is in close contact with the outer surface of the outer convex boss 22, and the plane is sealed and fitted, the lower end of the lower convex sleeve 71 of the oil guide sleeve 70 is inserted into the inner ring cavity 63 of the intermediate ring 60, and is arranged in a sealing fit, and the electromagnetic valve connecting sleeve 50 is fixedly mounted in the installation avoidance hole of the oil storage cylinder 30 The inner end of the outer circumference of the pressure ring 80 is tightly attached to the outer surface of the inner end side convex stop mounting ring 51, the inner end of the upper stop ring 72 of the oil guide sleeve 70 is pressed on the corresponding surface of the inner circumference of the pressure ring 80, and the plane is sealed and fitted, the lower convex sleeve 71 of the oil guide sleeve 70 passes through the center hole 82 of the pressure ring 80 and is convexly arranged downward, the inner end of the first cavity 130 of the central column cavity 73 of the oil guide sleeve 70, the outer end of the central column cavity 73 is connected to the inner cavity of the solenoid valve 40, the solenoid valve 40 is connected to the internal thread part of the sleeve body 52 of the solenoid valve connecting sleeve 50 through the external thread, the valve hole of the solenoid valve 40 is connected to the oil guide hole 81 of the pressure ring 80 through the corresponding inner cavity 53 of the sleeve body 52, and the oil guide hole 81 is connected to the second cavity 140 through the installation avoidance hole 31.

[0045] In a specific embodiment of the connecting joint 100, the portion of the lower convex sleeve 71 extending into the inner ring cavity 63 of the intermediate ring 60 is a reduced diameter structure 711, the outer ring of the reduced diameter structure 711 is configured with a reduced radial thickness, and the outer ring of the reduced diameter structure 711 is configured to be closely attached to the ring wall of the inner ring cavity 63;

[0046] A first O-ring 1 is also provided between the outer circumference of the reduced diameter structure 711 and the annular wall of the inner annular cavity 63, which ensures that the oil will not leak through the gap between the reduced diameter structure 711 and the inner annular cavity 63;

[0047] A second O-ring 2 is provided between the lower surface of the horizontal ring 62 of the intermediate ring 60 and the outer surface of the outer convex boss 22 to ensure sealing reliability;

[0048] A third O-ring 3 is provided between the upper stop ring 72 of the oil guide sleeve 70 and the lower surface of the solenoid valve 40 to ensure reliable sealing;

[0049] A gap 4 is left between the outer surface and the outer diameter end of the intermediate ring 60 and the installation avoidance hole 31 of the oil storage cylinder 30 to ensure normal flow of oil in the second chamber 140 and the oil guide hole 81 .

[0050] Its working principle is as follows: it adopts a straight-cylinder intermediate cylinder, the axial ends of the intermediate cylinder do not reduce in diameter, the annular groove is eliminated, and the sealing ring between the working cylinder and the intermediate cylinder is eliminated. The axial ends of the intermediate cylinder are respectively pressed with the corresponding stop bosses of the bottom valve and the guide, and then form a chamber with the working cylinder. It simplifies the structure of the intermediate cylinder, reduces the molds for intermediate cylinder processing, simplifies the process, reduces the cost, and reduces the sealing ring components of the shock absorber intermediate cylinder and the working cylinder, thereby eliminating the leakage problem caused by the failure of the sealing ring. When the shock absorber assembly is assembled, the bottom valve and the working cylinder and the intermediate cylinder are simultaneously assembled and sealed through the corresponding stop bosses, and the guide is simultaneously assembled and sealed through the corresponding stop bosses, reducing the assembly process of the shock absorber assembly; it simplifies the structure of the intermediate cylinder, reduces the components of the shock absorber, simplifies the assembly process, and reduces the cost.

[0051] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0052] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. The external electromagnetic valve shock absorber intermediate cylinder system is characterized by: It includes: Working cylinder; A piston assembly, comprising a piston valve and a piston rod; Intermediate cylinder Oil storage tank; Solenoid valve; Solenoid valve connecting sleeve; A connector assembly, which is used to install the solenoid valve to the intermediate cylinder and the oil storage cylinder; The bottom valve has a first radial inner stop boss for sleeve-mounting the working cylinder and a second radial middle stop boss for sleeve-mounting the intermediate cylinder on its outer circumference; and a guide, on the outer circumference of which a third stop boss at the radial inner end for sleeve-mounting the working cylinder and a fourth stop boss at the radial middle end for sleeve-mounting the intermediate cylinder are arranged; The outer ring sleeve of the working cylinder is provided with an intermediate cylinder, and a cavity gap is left. The outer circumference sleeve of the intermediate cylinder is provided with the oil storage cylinder, and a cavity gap is left. A bottom valve is provided at the bottom position of the inner cavity of the oil storage cylinder corresponding to the working cylinder. A guide is provided at the top position of the inner cavity of the oil storage cylinder corresponding to the working cylinder. The piston rod passes through the guide and is connected to the piston valve located in the working cylinder. The two ends of the working cylinder in the length direction are respectively sealed and fixedly positioned on the outer circumference of the first stop boss and the outer circumference of the third stop boss, and the two ends of the intermediate cylinder in the length direction are respectively sealed and fixedly positioned on the outer circumference of the second stop boss and the outer circumference of the fourth stop boss.

2. The external electromagnetic valve type shock absorber intermediate cylinder system according to claim 1, characterized in that: The first stop boss is located at the axial upper end of the second stop boss, and the third stop boss is located at the axial lower end of the fourth stop boss, which makes the axial length of the working cylinder smaller than the axial length of the intermediate cylinder.

3. The external electromagnetic valve type shock absorber intermediate cylinder system according to claim 1 or 2, characterized in that: The joint assembly includes an intermediate ring, an oil guide sleeve, and a pressure ring. The intermediate ring includes a lower convex end and a horizontal ring. The oil guide sleeve includes a lower convex sleeve and an upper stop ring. The outer diameter of the upper stop ring is larger than the diameter of the lower convex sleeve. A plurality of oil guide holes are arranged on the circumference of the pressure ring.

4. The external electromagnetic valve type shock absorber intermediate cylinder system according to claim 3 is characterized in that: The intermediate cylinder is provided with an oil flow hole corresponding to the installation position of the solenoid valve, and an outer convex boss is provided on the outer wall of the intermediate cylinder corresponding to the oil flow hole, and the outer surface of the outer convex boss is a plane structure, and the oil storage is provided with an installation avoidance hole corresponding to the installation position of the solenoid valve, the working cylinder and the intermediate cylinder enclose a first cavity, and the intermediate cylinder and the oil storage cylinder enclose a second cavity, the lower convex end of the intermediate ring is inserted into the oil flow hole, and the lower surface of the horizontal ring of the intermediate ring is tightly attached to the outer surface of the outer convex boss, and the plane is sealed, and the solenoid valve connecting sleeve is fixed at the corresponding position of the installation avoidance hole of the oil storage cylinder. The inner end of the outer circumference of the pressure ring is tightly arranged on the outer surface of the inner end side convex stop mounting ring, the inner end of the upper stop ring of the oil guide sleeve is pressed on the corresponding surface of the inner circumference of the pressure ring, and the plane is sealed and fitted, the lower convex sleeve of the oil guide sleeve passes through the center hole of the pressure ring and is convexly arranged, the inner end of the central column cavity of the oil guide sleeve is connected to the first cavity, the upper end of the central column cavity is connected to the inner cavity of the solenoid valve, the solenoid valve is connected to the internal thread part of the sleeve body of the solenoid valve connecting sleeve through the external thread, the valve hole of the solenoid valve is connected to the oil guide hole of the pressure ring through the corresponding inner cavity of the sleeve body, and the oil guide hole is connected to the second cavity through the installation avoidance hole.

5. The external electromagnetic valve type shock absorber intermediate cylinder system according to claim 4, characterized in that: The portion of the lower convex sleeve extending into the inner ring cavity of the middle ring is a reduced diameter structure, the radial thickness of the outer ring of the reduced diameter structure is reduced, and the outer ring circumference of the reduced diameter structure is arranged tightly against the ring wall of the inner ring cavity.

6. The external electromagnetic valve type shock absorber intermediate cylinder system according to claim 5, characterized in that: A first O-ring is also arranged between the outer circumference of the reduced diameter structure and the annular wall of the inner annular cavity.

7. The external electromagnetic valve shock absorber intermediate cylinder system according to claim 4, characterized in that: A second O-ring is arranged between the lower surface of the horizontal ring of the intermediate ring and the outer surface of the outer convex boss.

8. The external electromagnetic valve shock absorber intermediate cylinder system according to claim 4, characterized in that: A third O-ring is arranged between the upper stop ring of the oil guide sleeve and the lower surface of the solenoid valve.

9. The external electromagnetic valve shock absorber intermediate cylinder system according to claim 4, characterized in that: A gap is left between the outer surface of the intermediate ring and the outer diameter end and the oil storage cylinder to ensure normal flow between the oil in the second chamber and the oil guide hole.

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