Shock absorber valve seat, shock absorber, suspension system and vehicle

Abstract

The invention relates to a shock absorber valve seat, a shock absorber, a suspension system and a vehicle, and the shock absorber valve seat comprises a surrounding wall part, a sealing part and a sealing part, the partition part is arranged in the containing space and connected with the enclosure wall part so that the containing space can be divided into a first installation cavity and a second installation cavity, the first installation cavity is used for installing a recovery electromagnetic valve of the shock absorber, and the second installation cavity is used for installing a compression electromagnetic valve of the shock absorber. According to the shock absorber valve seat, the recovery solenoid valve and the compression solenoid valve do not need to be fixed to different fixing seats respectively, when the recovery solenoid valve and the compression solenoid valve need to be communicated with other oil ways of the shock absorber, the shock absorber valve seat is directly welded to the liquid storage cylinder, and then the recovery solenoid valve and the compression solenoid valve can be fixed; welding space does not need to be reserved, so that the position upper limit of the electromagnetic valve in the longitudinal height is greatly reduced, and the situation that the electromagnetic valve cannot be submerged by liquid is avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of shock absorption, in particular to a shock absorber valve seat, a shock absorber, a suspension system and a vehicle. BACKGROUND

[0002] A shock absorber is a device that absorbs vibration energy through damping medium. Common types include hydraulic, pneumatic and spring shock absorbers.

[0003] A hydraulic shock absorber includes a double-valve shock absorber, which is a bidirectional valve system design using a compression valve and a recovery valve. The compression valve controls the flow of liquid from the lower chamber to the upper chamber of the piston to suppress the sinking of the vehicle body when the shock absorber is compressed. The recovery valve controls the liquid return speed to prevent the vehicle body from bouncing excessively when the shock absorber is stretched. Its advantage lies in the independent adjustment of compression and extension damping, which can more accurately respond to different road conditions. The double-valve shock absorber usually has a compression valve fixing seat for fixing the compression valve and a recovery valve fixing seat for fixing the recovery valve welded on the outer side wall of the liquid storage cylinder.

[0004] Since the compression valve fixing seat and the recovery valve fixing seat need to be fixed by welding, a welding space needs to be reserved between the two fixing seats, resulting in a higher position of the fixing seat in the longitudinal height, which is prone to cause the liquid to fail to cover the valve inside the fixing seat, resulting in abnormal noise or idle stroke. SUMMARY

[0005] The embodiments of the present application provide a shock absorber valve seat, a shock absorber, a suspension system and a vehicle, which reduce the position of the fixing seat in the longitudinal height to at least partially solve the above technical problems.

[0006] In order to achieve the above-mentioned purpose, according to the first aspect of the present application, a shock absorber valve seat is provided, which comprises:

[0007] a surrounding wall part surrounding a containing space;

[0008] a partition part arranged in the containing space and connected with the surrounding wall part to divide the containing space into a first installation cavity and a second installation cavity, the first installation cavity being used for installing a recovery electromagnetic valve of a shock absorber, and the second installation cavity being used for installing a compression electromagnetic valve of the shock absorber.

[0009] Optionally, the shock absorber valve seat is an integrally formed structure.

[0010] Optionally, the thickness of the partition part in the parallel direction of the first installation cavity and the second installation cavity is greater than or equal to 8mm.

[0011] Optionally, a magnetic isolation material is arranged in the partition part.

[0012] Optionally, a fixing thread is arranged in the first mounting cavity and the second mounting cavity, the fixing thread of the first mounting cavity is adapted to fix the restoring electromagnetic valve, and the fixing thread of the second mounting cavity is adapted to fix the compression electromagnetic valve.

[0013] Optionally, the first mounting cavity is further adapted to mount a check valve joint in communication with the restoring electromagnetic valve.

[0014] Optionally, the second mounting cavity is further adapted to mount a compression joint in communication with the compression electromagnetic valve.

[0015] According to a second aspect of the present application, a shock absorber is provided, the shock absorber comprising:

[0016] a shock absorber valve seat as described above;

[0017] a restoring electromagnetic valve mounted in the first mounting cavity;

[0018] a check valve joint mounted in the first mounting cavity and in communication with the restoring electromagnetic valve;

[0019] a compression electromagnetic valve mounted in the second mounting cavity;

[0020] a compression joint mounted in the second mounting cavity and in communication with the compression electromagnetic valve.

[0021] Optionally, the shock absorber further comprises:

[0022] a liquid storage cavity in communication with the check valve joint and a liquid outlet of the restoring electromagnetic valve;

[0023] a working cavity provided with a piston and a piston rod connected with the piston, the piston dividing the working cavity into a first working cavity and a second working cavity;

[0024] a first intermediate cavity in communication with the first working cavity and the check valve joint;

[0025] a second intermediate cavity in communication with the second working cavity and the compression joint;

[0026] a bottom valve controlling communication between the second working cavity and the liquid storage cavity.

[0027] Optionally, the shock absorber further comprises:

[0028] a liquid storage cylinder, the shock absorber valve seat being fixed on the liquid storage cylinder;

[0029] a working cylinder arranged in the liquid storage cylinder, the working cavity being located in the working cylinder;

[0030] A first intermediate cylinder is sleeved on the working cylinder, and the first intermediate cavity is located between the first intermediate cylinder and the working cylinder. The working cylinder is provided with a first through hole for connecting the first working cavity and the first intermediate cavity.

[0031] A second intermediate cylinder is sleeved on the working cylinder, and the second intermediate cavity is located between the second intermediate cylinder and the working cylinder. The working cylinder is provided with a second through hole for connecting the second working cavity and the second intermediate cavity.

[0032] Optionally, the one-way valve joint forms a first central flow channel, a one-way flow channel and a first communication flow channel.

[0033] The first central flow channel connects the first intermediate cavity and the liquid inlet of the restoring electromagnetic valve.

[0034] The one-way flow channel connects the first central flow channel and allows liquid to enter the first central flow channel through the one-way flow channel.

[0035] The first communication flow channel connects the liquid storage cavity to the one-way flow channel and the liquid outlet of the restoring electromagnetic valve.

[0036] Optionally, the shock absorber further comprises at least two first protrusions arranged at intervals. The first protrusions are located between the first mounting cavity and the one-way valve joint. The first communication flow channel comprises a first flow channel groove formed between the two first protrusions and connecting the one-way flow channel and the liquid storage cavity.

[0037] Optionally, the first protrusions are arranged in the first mounting cavity or on the one-way valve joint.

[0038] Optionally, the first communication flow channel further comprises a first gap connecting the first flow channel groove and the liquid outlet of the restoring electromagnetic valve. The first gap is located between the outer circumferential surface of the end of the one-way valve joint close to the restoring electromagnetic valve and the first mounting cavity.

[0039] Optionally, an annular first sealing ring is protruded on the end surface of the one-way valve joint and in contact with the liquid inlet end of the restoring electromagnetic valve.

[0040] Optionally, the first sealing ring is a sealing strip, and the flatness of the sealing strip is less than or equal to 0.006 mm.

[0041] Optionally, the first sealing ring is a sealing strip, and the width of the sealing strip is 0.3-0.8 mm.

[0042] Optionally, the compression joint forms a second central passage and a second communication flow channel, the second central passage communicating the second intermediate cavity and a liquid inlet of the compression electromagnetic valve, and the second communication flow channel communicating the liquid storage cavity and a liquid outlet of the compression electromagnetic valve.

[0043] Optionally, the shock absorber further comprises at least two second protrusions arranged at intervals, the two second protrusions being located between the second mounting cavity and the compression joint, and the second communication flow channel comprises a second flow channel groove formed between the two second protrusions and communicating the liquid storage cavity.

[0044] Optionally, the second protrusions are arranged in the second mounting cavity or on the compression joint.

[0045] Optionally, the second protrusions are in the form of bosses, and gradually increase in size from the liquid outlet of the compression electromagnetic valve to the flow direction of the liquid storage cavity.

[0046] Optionally, the second communication flow channel further comprises a second gap communicating the second flow channel groove and the liquid outlet of the compression electromagnetic valve, the second gap being located between an outer circumferential surface of an end portion of the compression joint close to the compression electromagnetic valve and the second mounting cavity.

[0047] Optionally, the second communication flow channel is in a plurality, and the plurality of second communication flow channels are located around the second central passage.

[0048] Optionally, an annular second sealing ring is arranged on an end surface of the compression joint and in contact with the liquid inlet of the compression electromagnetic valve.

[0049] Optionally, the second sealing ring is a sealing band, and the flatness of the sealing band is less than or equal to 0.006 mm.

[0050] Optionally, the second sealing ring is a sealing band, and the width of the sealing band is 0.3-0.8 mm.

[0051] According to a third aspect of the present application, a suspension system is provided, which comprises the shock absorber valve seat or the shock absorber.

[0052] According to a fourth aspect of the present application, a vehicle is provided, which comprises the shock absorber valve seat or the shock absorber or the suspension system.

[0053] The first mounting cavity and the second mounting cavity of the application are separated by the partition, so that the shock absorber valve seat can fix the restoring electromagnetic valve and the compression electromagnetic valve at the same time without fixing the restoring electromagnetic valve and the compression electromagnetic valve on different fixing seats respectively. When the restoring electromagnetic valve and the compression electromagnetic valve need to be communicated with other oil paths of the shock absorber, the shock absorber valve seat is directly welded on the liquid storage cylinder, so that the fixing of the restoring electromagnetic valve and the compression electromagnetic valve can be realized, the upper limit of the position of the electromagnetic valve in the longitudinal height is greatly reduced, the situation that the liquid cannot cover the electromagnetic valve no longer occurs, and at least part of the technical problems in the prior art that the liquid cannot cover the valve in the fixing seat due to the need to reserve the welding space, resulting in abnormal noise or idle stroke, are solved.

[0054] Other features and advantages of the application will be described in detail in the following specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0055] In order to more clearly illustrate the technical solutions in the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can also be obtained according to these drawings without creative labor for those skilled in the art.

[0056] In order to more completely understand the application and its beneficial effects, the following will be described in conjunction with the drawings, wherein the same reference numerals in the following description represent the same parts.

[0057] Figure 1 is a whole structure schematic view of a shock absorber valve seat provided in the first exemplary embodiment of the application;

[0058] Figure 2 is a cross-sectional view of the shock absorber valve seat in Figure 1

[0059] Figure 3 is a whole structure schematic view of a shock absorber provided in the second exemplary embodiment of the application;

[0060] Figure 4 is a cross-sectional view of the shock absorber in Figure 3

[0061] Figure 5 is a structure schematic view of a one-way valve joint of the shock absorber in Figure 3

[0062] Figure 6 is a cross-sectional view of the one-way valve joint in Figure 5

[0063] Figure 7 is​​​​Figure 4 Partial enlarged view of A of the shock absorber in FIG. 1;

[0064] Figure 8 is Figure 4 Working principle diagram of the rebound of the shock absorber in FIG. 1;

[0065] Figure 9 is Figure 3 Structural schematic diagram of the compression joint of the shock absorber in FIG. 1;

[0066] Figure 10 is Figure 4 Partial enlarged view of B of the shock absorber in FIG. 1;

[0067] Figure 11 is Figure 4 Working principle diagram of the compression of the shock absorber in FIG. 1;

[0068] Figure 12 and Figure 13 Structural schematic diagram of the compression joint of a shock absorber provided in the third example embodiment of the present application.

[0069] Explanation of reference numerals:

[0070] 10, shock absorber valve seat; 11, surrounding wall portion; 12, partition portion; 13, accommodation space; 131, first mounting cavity; 132, second mounting cavity; 133, fixing thread;

[0071] 100, shock absorber; 20, rebound solenoid valve; 30, compression solenoid valve;

[0072] 40, one-way valve joint; 41, first central flow passage; 42, one-way flow passage; 43, first communication flow passage; 44, first protrusion; 45, first flow passage groove; 46, first gap; 47, first sealing ring;

[0073] 50, compression joint; 51, second central flow passage; 52, second communication flow passage; 53, second protrusion; 54, second flow passage groove; 55, second gap; 56, second sealing ring;

[0074] 61, liquid storage cavity; 62, working cavity; 621, first working cavity; 622, second working cavity; 631, first intermediate cavity; 632, second intermediate cavity; 641, first via hole; 642, second via hole;

[0075] 71, bottom valve; 72, piston; 73, piston rod; 74, liquid storage cylinder; 75, working cylinder; 76, first intermediate cylinder; 77, second intermediate cylinder. DETAILED DESCRIPTION

[0076] With reference to the accompanying drawings, the technical solutions in the embodiments of the present application will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative effort belong to the protection scope of the present application.

[0077] The present application provides a shock absorber valve seat 10, as shown in Figure 1 and Figure 2 Fig. 1 and Fig. 2 are a schematic diagram of the overall structure and a schematic diagram of the cross section of the shock absorber valve seat 10 provided in the first exemplary embodiment of the present application. The shock absorber valve seat 10 comprises a surrounding wall part 11 and a partition part 12.

[0078] The surrounding wall part 11 encloses a receiving space 13.

[0079] The partition part 12 is arranged in the receiving space 13 and connected with the surrounding wall part 11, so as to divide the receiving space 13 into a first installation cavity 131 and a second installation cavity 132, the first installation cavity 131 is used for installing a restoring electromagnetic valve 20 of a shock absorber 100, and the second installation cavity 132 is used for installing a compression electromagnetic valve 30 of the shock absorber 100.

[0080] That is, the shock absorber valve seat 10 of the present application has the first installation cavity 131 and the second installation cavity 132 separated by the partition part 12, so that the shock absorber valve seat 10 can fix the restoring electromagnetic valve 20 and the compression electromagnetic valve 30 at the same time, without the need to fix the restoring electromagnetic valve 20 and the compression electromagnetic valve 30 on different fixing seats respectively. When it is needed to connect the restoring electromagnetic valve 20 and the compression electromagnetic valve 30 with other oil paths of the shock absorber 100, the shock absorber valve seat 10 can be directly welded on a liquid storage cylinder 74, so as to realize the fixation of the restoring electromagnetic valve 20 and the compression electromagnetic valve 30, without the need to reserve a welding space, thereby greatly reducing the upper limit of the position of the electromagnetic valve in the longitudinal height, and the situation that the liquid cannot cover the electromagnetic valve no longer occurs, and at least part of the technical problems in the prior art that the situation that the liquid cannot cover the valve in the fixing seat is prone to occur due to the need to reserve the welding space, resulting in abnormal sound or idle stroke, are solved.

[0081] In addition, the shock absorber valve seat 10 has the first installation cavity 131 and the second installation cavity 132 separated by the partition part 12, so that the shock absorber valve seat 10 can fix the restoring electromagnetic valve 20 and the compression electromagnetic valve 30 at the same time, the integration degree of the shock absorber valve seat 10 is improved, the overall height of the shock absorber valve seat 10 is reduced, the longitudinal arrangement length is shortened, and the space arrangement efficiency is optimized.

[0082] The shock absorber valve seat 10 can be assembled in a split structure or in an integrated structure. In the embodiment, the shock absorber valve seat 10 is integrally formed, for example, by casting, forging or machining.

[0083] By setting the shock absorber valve seat 10 as an integrated structure, the assembly gap of the conventional split structure can be eliminated, the sealing reliability and the structural strength can be significantly improved, and the leakage risk and the vibration loosening problem caused by the combination of multiple components can be avoided. In addition, the integrated structure simplifies the production process and reduces the assembly process.

[0084] In some embodiments, in order to balance the electromagnetic interference between the rebound electromagnetic valve 20 and the compression electromagnetic valve 30 and the compactness of the structure of the shock absorber valve seat 10, the thickness of the partition portion 12 in the parallel direction of the first mounting cavity 131 and the second mounting cavity 132 is greater than or equal to 8 mm.

[0085] By setting the thickness of the partition portion 12 in the parallel direction of the first mounting cavity 131 and the second mounting cavity 132 to be greater than or equal to 8 mm, the compactness of the mechanism of the shock absorber valve seat 10 is considered, and the electromagnetic interference between the rebound electromagnetic valve 20 and the compression electromagnetic valve 30 is reduced, the influence on the damping characteristics is reduced, and the performance of the shock absorber 100 is guaranteed.

[0086] Of course, in addition to setting the thickness of the partition portion 12 to meet certain requirements to balance the electromagnetic interference between the rebound electromagnetic valve 20 and the compression electromagnetic valve 30 and the compactness of the structure of the shock absorber valve seat 10, in some embodiments, a magnetic shielding material can also be provided in the partition portion 12.

[0087] By providing a magnetic shielding material in the partition portion 12, the electromagnetic interference between the rebound electromagnetic valve 20 and the compression electromagnetic valve 30 is shielded, so that the thickness of the partition portion 12 can be reduced, the size of the shock absorber valve seat 10 in the longitudinal height direction can be further reduced, and the space arrangement is optimized.

[0088] Specifically, in the embodiment, the first mounting cavity 131 and the second mounting cavity 132 are provided with fixing threads 133. The fixing threads 133 of the first mounting cavity 131 are suitable for fixing the rebound electromagnetic valve 20. Through the fixing threads 133 in the first mounting cavity 131, the rebound electromagnetic valve 20 can be stably installed in the first mounting cavity 131. The fixing threads 133 of the second mounting cavity 132 are suitable for fixing the compression electromagnetic valve 30. Through the fixing threads 133 in the second mounting cavity 132, the compression electromagnetic valve 30 can be stably installed in the second mounting cavity 132.

[0089] Specifically, the first mounting cavity 131 is further adapted to mount the one-way valve joint 40 in communication with the restoring electromagnetic valve 20, and the second mounting cavity 132 is further adapted to mount the compression joint 50 in communication with the compression electromagnetic valve 30, so as to improve the integration of the shock absorber 100 and reduce the space occupied by the shock absorber 100.

[0090] Reference Figure 3 and Figure 4 In an embodiment, when the shock absorber valve seat 10 is mounted on the shock absorber and assembled into the vehicle suspension, the first mounting cavity 131 and the second mounting cavity 132 are arranged in an up-down direction in the vehicle height direction, and the first mounting cavity 131 is located above the second mounting cavity 132, so that the restoring electromagnetic valve 20 is also located above the compression electromagnetic valve 30. The scheme can reduce the upper limit of the position of the restoring electromagnetic valve 20 in the longitudinal height direction, and the situation that the liquid cannot overflow the restoring electromagnetic valve 20 no longer occurs.

[0091] The application also provides a shock absorber 100, as shown in Figure 3 and Figure 4 The shock absorber 100 comprises the aforementioned shock absorber valve seat 10, the restoring electromagnetic valve 20, the one-way valve joint 40, the compression electromagnetic valve 30, and the compression joint 50. The restoring electromagnetic valve 20 is mounted in the first mounting cavity 131; the one-way valve joint 40 is mounted in the first mounting cavity 131 and in communication with the restoring electromagnetic valve 20; the compression electromagnetic valve 30 is mounted in the second mounting cavity 132; and the compression joint 50 is mounted in the second mounting cavity 132 and in communication with the compression electromagnetic valve 30.

[0092] The shock absorber 100 has all the beneficial effects of the aforementioned shock absorber valve seat 10, which will not be repeated here.

[0093] The chambers of the shock absorber 100 are described below. Specifically, as shown in Figure 7 The shock absorber 100 further comprises a liquid storage cavity 61, a working cavity 62, a first intermediate cavity 631, a second intermediate cavity 632, and a bottom valve 71.

[0094] The liquid storage cavity 61 is in communication with the one-way valve joint 40 and the liquid outlet of the restoring electromagnetic valve 20, and the liquid in the liquid storage cavity 61 can enter the one-way valve joint 40, and the liquid flowing out of the liquid outlet of the restoring electromagnetic valve 20 can enter the liquid storage cavity 61.

[0095] The working cavity 62 is provided with a piston 72 and a piston rod 73 connected with the piston 72. The piston 72 divides the working cavity 62 into a first working cavity 621 and a second working cavity 622. When the piston rod 73 drives the piston 72 to move, the size of the first working cavity 621 and the second working cavity 622 can be changed, and the power of the liquid flow can be provided.

[0096] The first intermediate cavity 631 communicates the first working cavity 621 and the one-way valve joint 40, so that the liquid in the first working cavity 621 can enter the one-way valve joint 40 through the first intermediate cavity 631, or the liquid in the one-way valve joint 40 can enter the first working cavity 621 through the first intermediate cavity 631.

[0097] The second intermediate cavity 632 communicates the second working cavity 622 and the compression joint 50, so that the liquid in the second working cavity 622 can enter the compression joint 50 through the second intermediate cavity 632.

[0098] The bottom valve 71 controls the communication between the second working cavity 622 and the liquid storage cavity 61, so that the liquid in the liquid storage cavity 61 can enter the second working cavity 622 through the bottom valve 71.

[0099] By setting the liquid storage cavity 61, the working cavity 62, the first intermediate cavity 631, the second intermediate cavity 632, and the bottom valve 71, in cooperation with the recovery electromagnetic valve 20, the one-way valve joint 40, the compression electromagnetic valve 30, and the compression joint 50, the function of the shock absorber 100 can be realized.

[0100] Next, the structure of the shock absorber 100 forming the cavities is introduced.

[0101] The shock absorber 100 further comprises a liquid storage cylinder 74, a working cylinder 75, a first intermediate cylinder 76, and a second intermediate cylinder 77.

[0102] The shock absorber valve seat 10 is fixed on the liquid storage cylinder 74. The working cylinder 75 is arranged in the liquid storage cylinder 74, and the working cavity 62 is located in the working cylinder 75. The first intermediate cylinder 76 is sleeved on the working cylinder 75, the first intermediate cavity 631 is located between the first intermediate cylinder 76 and the working cylinder 75, and the first through hole 641 is formed on the working cylinder 75 to communicate the first working cavity 621 and the first intermediate cavity 631. The second intermediate cylinder 77 is sleeved on the working cylinder 75, the second intermediate cavity 632 is located between the second intermediate cylinder 77 and the working cylinder 75, and the second through hole 642 is formed on the working cylinder 75 to communicate the second working cavity 622 and the second intermediate cavity 632. That is, the shock absorber 100 adopts a four-cylinder arrangement, i.e., the liquid storage cylinder 74, the working cylinder 75, the first intermediate cylinder 76, and the second intermediate cylinder 77.

[0103] The specific structure of the one-way valve joint 40 is introduced below.

[0104] As shown in FIGS. Figure 5 , Figure 6 and Figure 7 In some embodiments, the one-way valve joint 40 forms a first central flow channel 41, a one-way flow channel 42, and a first communication flow channel 43.

[0105] The first center flow channel 41 communicates the first intermediate cavity 631 and the inlet of the recovery electromagnetic valve 20. Liquid passes through the first center flow channel 41 and enters the recovery electromagnetic valve 20 from the inlet of the recovery electromagnetic valve 20.

[0106] The one-way flow channel 42 communicates the first center flow channel 41 and allows liquid to pass through the one-way flow channel 42 and enter the first center flow channel 41. The one-way flow channel 42 is located around the first center flow channel 41. It is the principle of a one-way valve that only allows one-way flow, i.e., only allows liquid to pass through the one-way flow channel 42 and enter the first center flow channel 41, but does not allow liquid in the first center flow channel 41 to flow out of the one-way flow channel 42.

[0107] The first communication flow channel 43 is used to communicate the liquid storage cavity 61 to the one-way flow channel 42 and the outlet of the recovery electromagnetic valve 20. Liquid in the liquid storage cavity 61 can pass through the first communication flow channel 43, enter the one-way flow channel 42, and then enter the first center flow channel 41. However, liquid in the first center flow channel 41 cannot pass through the one-way flow channel 42 and enter the first communication flow channel 43, so the one-way flow channel 42 can only pass in one direction. Liquid in the recovery electromagnetic valve 20 can pass through the outlet and enter the first communication flow channel 43, and then enter the liquid storage cavity 61.

[0108] Specifically, the shock absorber 100 further comprises at least two first protrusions 44 which are spaced apart, the first protrusions 44 are located between the first mounting cavity 131 and the one-way valve joint 40, and the first communication flow channel 43 comprises a first flow channel groove 45 which is formed between the two first protrusions 44 and communicates the one-way flow channel 42 and the liquid storage cavity 61.

[0109] The first protrusions 44 are used to provide axial positioning of the one-way valve joint 40. Specifically, the first protrusions 44 can be arranged in the first mounting cavity 131 or on the one-way valve joint 40. In this embodiment, the first protrusions 44 are arranged on the one-way valve joint 40, and when the one-way valve joint 40 is mounted in the first mounting cavity 131, the first protrusions 44 are pressed in the first mounting cavity 131 to provide axial positioning of the one-way valve joint 40.

[0110] In addition, since the at least two first protrusions 44 are spaced apart, a part of the first communication flow channel 43, i.e., the first flow channel groove 45, is formed between the two first protrusions 44. The first flow channel groove 45 communicates the one-way flow channel 42 and the liquid storage cavity 61, and liquid in the liquid storage cavity 61 can directly pass through the first flow channel groove 45 and enter the one-way flow channel 42, and then enter the first center flow channel 41.

[0111] In this embodiment, the number of first protrusions 44 is six, and they are arranged along the circumference of the one-way valve joint 40. A first flow channel groove 45 is formed between every two first protrusions 44, i.e., the number of first flow channel grooves 45 is also six.

[0112] One end of the one-way valve joint 40 is sealedly assembled with the first intermediate cylinder 76 through an O-ring, and the other end of the one-way valve joint 40 is provided with an annular first sealing ring 47 protruding from the end face and in contact with the liquid inlet of the recovery electromagnetic valve 20.

[0113] The recovery electromagnetic valve 20 is fixed in the first mounting cavity 131 through a fixing screw 133, and the recovery electromagnetic valve 20 can be pressed and sealed with the first sealing ring 47 by rotating the recovery electromagnetic valve 20, thereby ensuring reliable sealing.

[0114] Compared with the O-ring, the first sealing ring 47 protruding from the end face of the one-way valve joint 40 is more compact in sealing, can realize a more compact installation space, and is feasible for sealing although the sealing performance is relatively weak, because the sealing requirement is not high and a certain degree of internal leakage is allowed.

[0115] However, the sealing mode has high requirements for the flatness and contact area of the sealing surface, and requires high flatness, therefore, the first sealing ring 47 is a sealing strip, and the flatness of the sealing strip is less than or equal to 0.006 mm to meet the sealing requirement.

[0116] In addition, the contact area cannot be too small, which may cause the end face to be sharp and damage the mounting surface of the recovery electromagnetic valve 20 when pressed, and cannot be too large, which makes it difficult to ensure the flatness, reduces the contact area, and reduces the sealing reliability, therefore, the width of the sealing strip is set to 0.3 mm to 0.8 mm.

[0117] By protruding the first sealing ring 47 from the end of the one-way valve joint 40, a compact installation space layout is realized, and by controlling the flatness of the sealing strip and the contact area, the best balance between the sealing performance and the installation space is ensured, thereby ensuring the long-term stable operation of the shock absorber.

[0118] Further, the first communication flow channel 43 further comprises a first gap 46 communicating the first flow channel groove 45 and the liquid outlet of the recovery electromagnetic valve 20, and the first gap 46 is located between the outer circumferential surface of the one-way valve joint 40 close to the recovery electromagnetic valve 20 and the first mounting cavity 131.

[0119] By providing the first gap 46, the first flow channel groove 45 can be communicated with the liquid outlet of the recovery electromagnetic valve 20, a liquid passage for the liquid of the recovery electromagnetic valve 20 to enter the liquid storage cavity 61 is provided, the circulation of the liquid inside the shock absorber 100 is ensured, and the one-way valve joint 40 installation is also provided with a fine adjustment space, effectively solving the coaxiality deviation problem caused by the floating installation of the first intermediate cylinder 76, and ensuring reliable assembly effect.

[0120] The working principle of recovery is as follows: as shown inFigure 8 As shown, when the piston rod 73 moves upward, the damper enters the recovery stroke, controlling the compression solenoid valve 30 to close and the recovery solenoid valve 20 to operate. The first working chamber 621 decreases and the second working chamber 622 increases. The liquid in the upper chamber of the first working chamber 621 flows into the first intermediate chamber 631 through the first through hole 641, and then enters the recovery solenoid valve 20 through the first central flow channel 41 of the one-way valve connector 40. By adjusting the current of the recovery solenoid valve 20, the liquid flow area can be changed, and the damping force can be modulated. The liquid flows out from the outlet of the recovery solenoid valve 20, passes through the first gap 46 and the first flow channel groove 45 in sequence, and enters the storage chamber 61. Under the action of pressure difference, it flows back to the second working chamber 622 through the bottom valve 71, completing a complete recovery cycle.

[0121] The following describes the specific structure of the compression connector 50.

[0122] like Figure 9 and Figure 10 As shown, in some embodiments, the compression connector 50 forms a second central channel 51 and a second connecting channel 52.

[0123] The second central channel 51 connects the second intermediate cavity 632 and the liquid inlet of the compression solenoid valve 30. The liquid in the second intermediate cavity 632 can sequentially enter the compression solenoid valve 30 through the second central channel 51 and the liquid inlet of the compression solenoid valve 30.

[0124] The second connecting channel 52 connects the liquid storage chamber 61 and the liquid outlet of the compression solenoid valve 30, allowing the liquid from the compression solenoid valve 30 to sequentially enter the liquid storage chamber 61 through the liquid outlet and the second connecting channel 52.

[0125] Specifically, the shock absorber 100 also includes at least two second protrusions 53 spaced apart, the two second protrusions 53 being located between the second mounting cavity 132 and the compression joint 50, and the second communicating channel 52 including a second channel groove 54 formed between the two second protrusions 53 and communicating with the liquid storage cavity 61.

[0126] The second protrusion 53 is used to provide axial positioning of the compression connector 50. Specifically, the second protrusion 53 can be disposed in the second mounting cavity 132 or on the compression connector 50. In this embodiment, the second protrusion 53 can be disposed in the second mounting cavity 132. When the compression connector 50 is installed in the second mounting cavity 132, the second protrusion 53 presses against the compression connector 50 to provide axial positioning of the compression connector 50.

[0127] In addition, since at least two second protrusions 53 are spaced apart, a portion of a second connecting channel 52, namely a second channel groove 54, is formed between the two second protrusions 53, which is connected to the liquid storage chamber 61.

[0128] In the embodiment, the number of the first protrusions 44 is six, which are arranged along the circumference of the second mounting cavity 132, and the second flow channel grooves 54 are formed between every two second protrusions 53, that is, the number of the second flow channel grooves 54 is also six.

[0129] Specifically, in the embodiment, the second protrusions 53 are in the form of bosses, and the second protrusions 53 gradually increase from the liquid outlet of the compression electromagnetic valve 30 to the flow direction of the liquid storage cavity 61. By gradually increasing the second protrusions 53 from the liquid outlet of the compression electromagnetic valve 30 to the flow direction of the liquid storage cavity 61, a liquid guide surface is formed on the second protrusions 53 for guiding the flow of liquid. Through such design, the liquid can flow smoothly along the guide surface, reducing hydraulic impact, thereby theoretically reducing the high-speed damping force fluctuation of the shock absorber. In addition, the second flow channel grooves 54 formed between two second protrusions 53 are in communication with the liquid storage cavity 61, which ensures the correct flow direction of the liquid and the normal circulation of the compression oil passage.

[0130] Further, the second communication flow channel 52 further comprises a second gap 55 which communicates the second flow channel groove 54 and the liquid outlet of the compression electromagnetic valve 30, and the second gap 55 is located between the outer circumferential surface of the compression joint 50 close to one end of the compression electromagnetic valve 30 and the second mounting cavity 132.

[0131] By arranging the second gap 55, not only can the second flow channel groove 54 be in communication with the liquid outlet of the compression electromagnetic valve 30 to ensure the circulation of the liquid inside the shock absorber 100, but also can provide a fine adjustment space for the installation of the compression joint 50 to ensure the smooth installation of the compression joint 50, effectively solving the technical problem that the second intermediate cylinder 77 is a floating member and the valve seat is fixed to the liquid storage cylinder 74 by welding, which makes it difficult to ensure the coaxiality of the mounting hole of the second intermediate cylinder 77 and the center hole of the valve seat, and through adjusting the installation position of the compression joint 50, reliable assembly can be achieved.

[0132] The working principle of compression is as follows: Figure 11As shown, when the piston rod 73 moves downward, the shock absorber enters the compression stroke, the compression solenoid valve 30 works, and the recovery solenoid valve 20 is closed), the second working cavity 622 decreases, the first working cavity 621 increases, and the liquid in the second working cavity 622 is compressed and flows into the second intermediate cavity 632 through the second through hole 642, then enters the second central passage 51 of the compression joint 50, enters the compression solenoid valve 30 through the liquid inlet of the compression solenoid valve 30, and changes the liquid flow area by adjusting the current size of the compression solenoid valve 30, so as to realize the modulation of damping force. The liquid flows out through the liquid outlet of the compression solenoid valve 30, sequentially passes through the second gap 55 and the second flow channel 54, and enters the liquid storage cavity 61. Under the action of pressure difference, the liquid in the liquid storage cavity 61 enters the first central flow channel 41 through the one-way flow channel 42 of the one-way valve joint 40, then enters the first intermediate cavity 631, and finally returns to the first working cavity 621 through the first through hole 641, forming a complete compression circulation path.

[0133] In other embodiments, the second protrusion 53 and the second gap 55 can not be used, and specifically, as shown in Figure 12 and Figure 13 As shown, the second communication flow channel 52 is a plurality of second communication flow channels 52 located around the second central passage 51. That is, a plurality of second communication flow channels 52 are directly provided on the compression joint 50 and located around the second central passage 51.

[0134] By directly providing the second communication flow channel 52 around the second central passage 51 of the compression joint 50, the second protrusion 53 is no longer needed, and the liquid of the compression solenoid valve 30 can sequentially enter the liquid storage cavity 61 through the liquid outlet and the second communication flow channel 52, realizing the correct flow direction of the liquid. Moreover, the direct provision of the second communication flow channel 52 can further reduce the axial size of the shock absorber valve seat 10.

[0135] In the present embodiment, one end of the compression joint 50 is sealingly assembled with the second intermediate cylinder 77 through an O-ring, and the other end is assembled with the end face of the compression solenoid valve 30 through an annular end face sealing method. Specifically, the other end of the compression joint 50 is provided with an annular second sealing ring 56 in contact with the liquid inlet end of the compression solenoid valve 30. The compression solenoid valve 30 is fixed in the second mounting cavity 132 through a fixing thread 133, and by rotating the compression solenoid valve 30, the compression solenoid valve 30 can be tightly sealed with the second sealing ring 56, ensuring reliable sealing performance.

[0136] Compared with the O-shaped sealing ring, the end face sealing is more simple, and a more compact installation space can be realized, although the sealing performance is relatively weak, but since the sealing requirement is not high in the application, and a certain degree of internal leakage is allowed, therefore, it is feasible to select this mode for sealing.

[0137] However, since the sealing mode puts forward higher requirements on the flatness and contact area of the sealing surface, a higher flatness requirement is required, therefore, the second sealing ring 56 is specifically a sealing strip, and the flatness of the sealing strip is less than or equal to 0.006 mm to meet the sealing requirement.

[0138] In addition, the contact area cannot be too small, otherwise the end face may be sharp, which may damage the installation surface of the restoring electromagnetic valve 20 when compressed, and the contact area cannot be too large, otherwise it is difficult to ensure the flatness, the contact area is reduced, and the sealing reliability is reduced, therefore, the width of the sealing strip is set to 0.3 mm-0.8 mm.

[0139] By protruding the second sealing ring 56 on the end of the compression joint 50, a compact installation space layout is realized, and by controlling the flatness of the sealing strip and the contact area, the best balance between sealing performance and installation space is ensured, thereby ensuring the long-term stable operation of the shock absorber.

[0140] The application also provides a suspension system, which comprises the shock absorber valve seat 10 or the shock absorber 100 as described above, and has all the beneficial effects of the shock absorber valve seat 10 or the shock absorber 100 as described above, which will not be repeated here.

[0141] The application also provides a vehicle, which comprises the shock absorber valve seat 10 or the shock absorber 100 or the suspension system as described above, and has all the beneficial effects of the shock absorber valve seat 10 or the shock absorber 100 or the suspension system as described above, which will not be repeated here.

[0142] In the description of the application, the terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more features. In the description of the application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0143] In the above embodiments, the description of each embodiment has its own emphasis, and the parts not described in detail in a certain embodiment can be referred to the related description of other embodiments.

[0144] The embodiments, implementation manners and related technical features of the application can be combined or replaced with each other without conflict.

[0145] The above merely describes the preferred embodiments of the present application, and is not intended to limit the present application in any form. Any simple modification, equivalent change and modification made to the above embodiments without departing from the technical solution of the present application and in accordance with the technical essence of the present application shall still fall within the scope of the technical solution of the present application.

Claims

1. A shock absorber valve seat (10), characterized in that, The shock absorber valve seat (10) includes: Enclosing section (11) encloses the accommodating space (13); A partition (12) is disposed within the accommodating space (13) and connected to the enclosure (11) to divide the accommodating space (13) into a first mounting cavity (131) and a second mounting cavity (132). The first mounting cavity (131) is used to install the recovery solenoid valve (20) of the shock absorber (100), and the second mounting cavity (132) is used to install the compression solenoid valve (30) of the shock absorber (100).

2. The shock absorber valve seat (10) according to claim 1, characterized in that, The shock absorber valve seat (10) is an integrally formed structure.

3. The shock absorber valve seat (10) according to claim 1, characterized in that, The thickness of the partition (12) in the parallel direction of the first mounting cavity (131) and the second mounting cavity (132) is greater than or equal to 8 mm.

4. The shock absorber valve seat (10) according to claim 1, characterized in that, The partition (12) is provided with a magnetic shielding material.

5. The shock absorber valve seat (10) according to claim 1, characterized in that, The first mounting cavity (131) and the second mounting cavity (132) are provided with fixing threads (133). The fixing threads (133) of the first mounting cavity (131) are suitable for fixing the recovery solenoid valve (20), and the fixing threads (133) of the second mounting cavity (132) are suitable for fixing the compression solenoid valve (30).

6. The shock absorber valve seat (10) according to any one of claims 1-5, characterized in that, The first mounting cavity (131) is also adapted to mount a one-way valve connector (40) that communicates with the solenoid valve (20).

7. The shock absorber valve seat (10) according to any one of claims 1-5, characterized in that, The second mounting cavity (132) is also adapted to mount a compression connector (50) that communicates with the compression solenoid valve (30).

8. A shock absorber (100), characterized in that, The shock absorber (100) includes: The shock absorber valve seat (10) as described in any one of claims 1-7; The solenoid valve (20) is installed in the first mounting cavity (131); A one-way valve connector (40) is installed in the first mounting cavity (131) and is connected to the recovery solenoid valve (20); A compression solenoid valve (30) is installed in the second mounting cavity (132); A compression connector (50) is installed in the second mounting cavity (132) and is connected to the compression solenoid valve (30).

9. The shock absorber (100) according to claim 8, characterized in that, The shock absorber (100) also includes: The liquid storage chamber (61) is connected to the liquid outlet of the one-way valve connector (40) and the recovery solenoid valve (20); The working chamber (62) is provided with a piston (72) and a piston rod (73) connected to the piston (72). The piston (72) divides the working chamber (62) into a first working chamber (621) and a second working chamber (622). The first intermediate cavity (631) is connected to the first working cavity (621) and the one-way valve connector (40); The second intermediate cavity (632) connects the second working cavity (622) and the compression connector (50); Bottom valve (71) controls the connection between the second working chamber (622) and the liquid storage chamber (61).

10. The shock absorber (100) according to claim 9, characterized in that, The shock absorber (100) also includes: The reservoir (74) is fixed to the shock absorber valve seat (10); A working cylinder (75) is disposed inside the liquid storage cylinder (74), and the working chamber (62) is located inside the working cylinder (75); A first intermediate cylinder (76) is sleeved on the working cylinder (75). The first intermediate cavity (631) is located between the first intermediate cylinder (76) and the working cylinder (75). The working cylinder (75) has a first through hole (641) that connects the first working cavity (621) and the first intermediate cavity (631). The second intermediate cylinder (77) is sleeved on the working cylinder (75). The second intermediate cavity (632) is located between the second intermediate cylinder (77) and the working cylinder (75). The working cylinder (75) has a second through hole (642) that connects the second working cavity (622) and the second intermediate cavity (632).

11. The shock absorber (100) according to any one of claims 9-10, characterized in that, The one-way valve connector (40) forms a first central flow channel (41), a one-way flow channel (42), and a first connecting flow channel (43); The first central flow channel (41) connects the first intermediate cavity (631) and the liquid inlet of the recovery solenoid valve (20); The one-way flow channel (42) is connected to the first central flow channel (41), allowing liquid to enter the first central flow channel (41) through the one-way flow channel (42); The first connecting channel (43) connects the liquid storage chamber (61) to the one-way channel (42) and the outlet of the recovery solenoid valve (20).

12. The shock absorber (100) according to claim 11, characterized in that, The shock absorber (100) further includes at least two first protrusions (44) spaced apart, the first protrusions (44) being located between the first mounting cavity (131) and the one-way valve connector (40), and the first connecting flow channel (43) including a first flow channel groove (45) formed between the two first protrusions (44) and connecting the one-way flow channel (42) and the liquid storage cavity (61).

13. The shock absorber (100) according to claim 12, characterized in that, The first protrusion (44) is disposed in the first mounting cavity (131) or on the one-way valve connector (40).

14. The shock absorber (100) according to claim 12, characterized in that, The first connecting channel (43) further includes a first gap (46) connecting the first channel groove (45) and the outlet of the recovery solenoid valve (20). The first gap (46) is located between the outer peripheral surface of the end of the one-way valve connector (40) near the recovery solenoid valve (20) and the first mounting cavity (131).

15. The shock absorber (100) according to claim 11, characterized in that, The end face of the one-way valve connector (40) is provided with an annular first sealing ring (47) that contacts the liquid inlet end of the recovery solenoid valve (20).

16. The shock absorber (100) according to claim 15, characterized in that, The first sealing ring (47) is a sealing strip, and the flatness of the sealing strip is less than or equal to 0.006 mm.

17. The shock absorber (100) according to claim 15, characterized in that, The first sealing ring (47) is a sealing strip, and the width of the sealing strip is 0.3mm-0.8mm.

18. The shock absorber (100) according to any one of claims 9-10, characterized in that, The compression connector (50) forms a second central channel (51) and a second connecting channel (52). The second central channel (51) connects the second intermediate cavity (632) and the inlet of the compression solenoid valve (30). The second connecting channel (52) connects the storage cavity (61) and the outlet of the compression solenoid valve (30).

19. The shock absorber (100) according to claim 18, characterized in that, The shock absorber (100) further includes at least two second protrusions (53) spaced apart, the two second protrusions (53) being located between the second mounting cavity (132) and the compression joint (50), and the second communicating channel (52) including a second channel groove (54) formed between the two second protrusions (53) and communicating with the liquid storage cavity (61).

20. The shock absorber (100) according to claim 19, characterized in that, The second protrusion (53) is disposed in the second mounting cavity (132) or on the compression joint (50).

21. The shock absorber (100) according to claim 19, characterized in that, The second protrusion (53) is in the shape of a boss, and the second protrusion (53) gradually increases in the flow direction from the liquid outlet of the compression solenoid valve (30) to the liquid storage chamber (61).

22. The shock absorber (100) according to claim 19, characterized in that, The second connecting channel (52) further includes a second gap (55) connecting the second flow groove and the outlet of the compression solenoid valve (30). The second gap (55) is located between the outer peripheral surface of the compression connector (50) near the end of the compression solenoid valve (30) and the second mounting cavity (132).

23. The shock absorber (100) according to claim 19, characterized in that, There are multiple second connecting channels (52), and the multiple second connecting channels (52) are located around the second central channel (51).

24. The shock absorber (100) according to claim 19, characterized in that, The end face of the compression connector (50) is provided with an annular second sealing ring (56) that contacts the liquid inlet end of the compression solenoid valve (30).

25. The shock absorber (100) according to claim 24, characterized in that, The second sealing ring (56) is a sealing strip, and the flatness of the sealing strip is less than or equal to 0.006 mm.

26. The shock absorber (100) according to claim 24, characterized in that, The second sealing ring (56) is a sealing strip with a width of 0.3mm-0.8mm.

27. A suspension system, characterized in that, The suspension system includes a shock absorber valve seat (10) as described in any one of claims 1-7, or a shock absorber (100) as described in any one of claims 8-26.

28. A vehicle, characterized in that, The vehicle includes a shock absorber valve seat (10) as described in any one of claims 1-7, or a shock absorber (100) as described in any one of claims 8-26, or a suspension system as described in claim 27.

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