Shock absorber combination valve and shock absorber

Abstract

The utility model provides a shock absorber combination valve and a shock absorber. The shock absorber combination valve comprises an electromagnet assembly, a cylindrical valve body and a passive valve assembly which are sequentially arranged in a shock absorber cylinder body. A sliding pin, a damping seat and a main valve element assembly are arranged in the valve body. A first cavity is formed between the damping seat and the main valve element assembly, a second cavity is formed between the damping seat and the electromagnet assembly, the first cavity is communicated with the compression working cavity, and the second cavity is communicated with the recovery working cavity through a throttling channel arranged on the valve body; a first one-way valve unit which is in one-way conduction in the direction pointing to the second cavity is arranged between the sliding pin and the damping seat, a second one-way valve unit which is in one-way conduction in the direction pointing to the first cavity is arranged between the damping seat and the main valve element assembly, and the electromagnet assembly drives the sliding pin to move in the axial direction of the valve body. The flow area between the first cavity and the second cavity can be changed. The combined valve of the shock absorber is beneficial to platform design and manufacture.

Description

Technical Field

[0001] The utility model relates to the technical field of shock absorbers, and in particular to a shock absorber composite valve. Meanwhile, the utility model also relates to a shock absorber provided with the shock absorber composite valve. Background Art

[0002] The suspension has a great influence on the comfort and safety of vehicle driving, and the shock absorber, as a key component in the suspension, has undergone many generations of upgrades since its appearance. At present, passive shock absorbers are mostly used in mid- and low-end models. Although they are relatively cheap, the damping is fixed after the parts leave the factory and cannot be adjusted. High-end models mostly use electromagnetic shock absorbers with adjustable damping. A composite valve is installed in the electromagnetic shock absorber. According to the layout position of the composite valve, it can be divided into two types: external and internal.

[0003] Among them, the built-in composite valve is arranged inside the shock absorber cylinder, and can adjust the damping force of the shock absorber oil during the compression and recovery process of the shock absorber, thereby adjusting the shock absorber damping in the compression and recovery strokes. However, the existing built-in shock absorber composite valve has a complex structure principle, high precision requirements for parts, and is assembled inside the cylinder of the shock absorber system, which has adaptation requirements for size, which is not conducive to platformization. Utility Model Content

[0004] In view of this, the utility model aims to provide a shock absorber composite valve to facilitate platform design and manufacturing.

[0005] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0006] A shock absorber composite valve comprises an electromagnet assembly, a cylindrical valve body and a passive valve assembly which are sequentially arranged in a shock absorber cylinder, wherein the passive valve assembly divides the shock absorber cylinder into a restoring working chamber and a compressing working chamber;

[0007] The valve body is provided with a sliding pin, a damping seat and a main valve core assembly, the main valve core assembly is located on one side of the damping seat, the sliding pin penetrates the damping seat along the axial direction of the valve body and is connected to the electromagnet assembly;

[0008] A first cavity is formed between the damping seat and the main valve core assembly, a second cavity is formed between the damping seat and the electromagnet assembly, the first cavity is communicated with the compression working chamber, and the second cavity is communicated with the recovery working chamber through a throttling channel provided on the valve body;

[0009] A first one-way valve unit that is unidirectionally conductive along the direction pointing to the second cavity is provided between the sliding pin and the damping seat, and a second one-way valve unit that is unidirectionally conductive along the direction pointing to the first cavity is provided between the damping seat and the main valve core assembly. The electromagnet assembly drives the sliding pin to move axially along the valve body, thereby changing the flow area between the first cavity and the second cavity.

[0010] Furthermore, a first communicating channel connecting the first cavity and the second cavity is provided between the damping seat and the sliding pin, and the first one-way valve unit includes a first valve component provided in the first communicating channel, and a first elastic component provided between the first valve component and the sliding pin; a second communicating channel connecting the first cavity and the second cavity is provided on the damping seat, and the second one-way valve unit includes a second valve component provided in the second communicating channel, and a second elastic component provided between the second valve component and the main valve core assembly.

[0011] Furthermore, a connecting sleeve is provided at one end of the sliding pin close to the second cavity, the sliding pin is connected to the electromagnet assembly through the connecting sleeve, and the first elastic member is located between the connecting sleeve and the first valve member.

[0012] Furthermore, an annular groove is provided on one side of the damping seat close to the second cavity and is axially arranged around the valve body, and a connecting port for connecting the second connecting channel with the second cavity is located in the annular groove, and a first throttling hole is provided in the annular groove; a first protrusion corresponding to the annular groove is provided on the connecting sleeve, and when the electromagnet assembly drives the sliding pin to slide, the first protrusion can enter the annular groove, and the second cavity is connected with the second connecting channel through the first throttling hole.

[0013] Furthermore, the connecting sleeve is provided with a first through hole arranged along the axial direction of the valve body; a second throttling hole is provided in the annular groove, and when the first protrusion enters the annular groove, the second cavity is connected with the second connecting channel through the first through hole and the second throttling hole.

[0014] Furthermore, a block for blocking the first connecting channel is provided at one end of the sliding pin close to the first cavity, and a third throttling hole connecting the first connecting channel and the first cavity is provided on the block; and / or a valve core base is provided in the valve body, and the valve core base is located on one side of the main valve core assembly, and the valve body and the valve core base, the valve body and the damping seat, the valve body and the electromagnet assembly, and the connecting sleeve and the sliding pin are all screwed, pressed or welded.

[0015] Furthermore, the main valve core assembly includes a main valve core slidably arranged in the valve body, and a slider arranged on the main valve core, a third elastic member is arranged between the main valve core and the damping seat, and a first valve hole connected to the compression working chamber is arranged on the main valve core, and a second valve hole connected to the first valve hole and the first cavity is arranged on the slider; the slider and the main valve core are screwed, pressed or welded together, and / or a second protrusion is arranged on the slider, and one end of the second elastic member abuts against the second protrusion.

[0016] Furthermore, the throttling channel includes a fourth throttling hole arranged radially along the valve body, and the fourth throttling hole is a plurality of holes arranged axially at intervals around the valve body.

[0017] Furthermore, the valve body is provided with a plurality of detachable throttling parts, and each of the throttling parts is provided with the fourth throttling hole; and / or, at least one of the fourth throttling holes is provided with a sphere, and the fourth throttling hole provided with the sphere is unidirectionally conductive in the direction pointing to the recovery working chamber.

[0018] Compared with the prior art, the utility model has the following advantages:

[0019] The shock absorber composite valve described in the utility model can realize separate control of the hydraulic pressure in the compression condition and the recovery condition through the coordinated setting of the first one-way valve unit and the second one-way valve unit, so that the damping force in the compression condition or the recovery condition can be independently adjusted according to system requirements. At the same time, the flow area between the first cavity and the second cavity can be changed based on the coordination of the electromagnet assembly and the sliding pin, that is, under the premise of unidirectional conduction between the first one-way valve unit and the second one-way valve unit, the damping force in the compression condition or the recovery condition can be readjusted, which is conducive to platform-based design and manufacturing.

[0020] In addition, by providing a connecting sleeve, it is convenient to realize the driving of the sliding pin by the electromagnet assembly, and the arrangement and installation of the first elastic member. The arrangement of the annular groove, the first throttle hole, the first protrusion, and the cooperation of the first through hole and the second throttle hole can limit a part of the damping medium to enter the second connecting channel after passing through the first throttle hole and the annular groove, and limit a part of the damping medium to enter the second connecting channel after passing through the first through hole and the second throttle hole, so as to realize the adjustment of the opening size of the second one-way valve unit under the recovery condition, and realize the adjustment of the hydraulic pressure in the second cavity, thereby facilitating the adjustment of the overall opening size of the shock absorber composite valve.

[0021] Secondly, by setting a block with a third throttle hole, the opening of the first one-way valve unit can be ensured to be minimum when the electromagnet assembly does not drive the slider pin to move, that is, the damping force from the first cavity to the second cavity under compression conditions is maximum, which is conducive to realizing the 0A protection function under compression conditions. At the same time, when the electromagnet assembly drives the slider pin to move, the opening of the first one-way valve unit can be increased to realize the damping force adjustment under compression conditions. The valve body and the valve core base, the valve body and the damping seat, the valve body and the electromagnet assembly, and the connecting sleeve and the sliding pin are all screwed together, which can reduce the dimensional accuracy and assembly accuracy requirements of each component, reduce costs, and facilitate the platform design and manufacturing of the shock absorber composite valve.

[0022] In addition, the screw connection between the slider and the main valve core is also conducive to reducing the dimensional accuracy and assembly accuracy requirements of the slider and the main valve core, reducing manufacturing costs, and further facilitating the platform design and manufacturing of the shock absorber composite valve. At the same time, the provision of the second protrusion is conducive to the arrangement and installation of the second elastic member. At least one of the fourth throttle holes is provided with a ball, which can realize the one-way conduction from the second cavity to the recovery working cavity, so that the damping force from the recovery working cavity to the second cavity under the recovery condition is greater than the damping force from the second cavity to the recovery working cavity under the compression condition, thereby facilitating the use effect of the shock absorber composite valve.

[0023] Another object of the utility model is to provide a shock absorber, comprising the shock absorber composite valve as described above.

[0024] The shock absorber described in the utility model is provided with the above-mentioned shock absorber composite valve, which can independently adjust the damping force of the compression condition or the recovery condition, so as to facilitate the realization of platform-based design and manufacturing, thereby having good product competitiveness. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0026] Figure 1 It is a three-dimensional structural schematic diagram of the shock absorber composite valve according to an embodiment of the utility model;

[0027] Figure 2 It is a front view of the shock absorber composite valve according to the embodiment of the utility model;

[0028] Figure 3 A top view of the shock absorber composite valve according to an embodiment of the utility model;

[0029] Figure 4 for Figure 3 Sectional view at AA in the middle;

[0030] Figure 5 for Figure 4 The enlarged view of point B in the middle;

[0031] Figure 6 This is a schematic diagram of the structure of the sliding pin according to an embodiment of the utility model;

[0032] Figure 7 A bottom view of the sliding pin according to an embodiment of the utility model;

[0033] Figure 8 It is a structural schematic diagram of the damping seat described in an embodiment of the utility model;

[0034] Description of reference numerals:

[0035] a. Recovery working chamber; b. Compression working chamber;

[0036] 10. Electromagnet assembly; 101. Electromagnetic drive unit; 102. Pin shaft;

[0037] 20. Passive valve assembly; 201. Sealing area;

[0038] 30, valve body; 301, first cavity; 302, second cavity; 303, fourth throttle hole; 304, ball; 305, third valve hole;

[0039] 31, sliding pin; 311, blocking block; 3111, bottom wall; 31111, positioning groove; 3112, side wall; 31121, third throttle hole;

[0040] 32, damping seat; 320, center hole; 321, first communication channel; 322, second communication channel; 323, annular groove; 3231, outer groove wall; 32311, first throttle hole; 3232, inner groove wall; 32321, second throttle hole; 324, third protrusion;

[0041] 33. Main valve core assembly; 331. Main valve core; 3311. First valve hole; 3312. Positioning hole; 3313. Mounting groove; 332. Slider; 3321. Second valve hole; 3322. Second protrusion; 333. Control panel;

[0042] 34. First one-way valve unit; 341. First valve member; 342. First elastic member;

[0043] 35. Second one-way valve unit; 351. Second valve member; 352. Second elastic member;

[0044] 36, connecting sleeve; 361, first protrusion; 362, first through hole;

[0045] 37. valve core base; 371. fourth valve hole;

[0046] 38. A third elastic member; 39. A second connecting space. DETAILED DESCRIPTION

[0047] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0048] In the description of the present invention, it should be noted that if there are terms such as "upper", "lower", "inner", "outer" and the like indicating orientation or positional relationship, they are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, if there are terms such as "first" and "second", they are also used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0049] In addition, in the description of the present invention, unless otherwise clearly defined, the terms "installation", "connection", "connection" and "connector" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood in combination with specific circumstances.

[0050] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0051] Embodiment 1

[0052] The present embodiment relates to a shock absorber composite valve, which can be used for example for shock absorbers on vehicles. The shock absorber composite valve can independently adjust the damping force of a compression condition or a recovery condition according to system requirements, and not only has a good vibration reduction effect, but is also conducive to platform-based design and manufacturing.

[0053] In terms of overall structure, Figures 1 to 8 As shown, the shock absorber composite valve of this embodiment includes a shock absorber cylinder, an electromagnet assembly 10, a cylindrical valve body 30 and a passive valve assembly 20 which are arranged in the shock absorber cylinder in sequence along the axial direction of the shock absorber cylinder. The passive valve assembly 20 divides the shock absorber cylinder into a recovery working chamber a and a compression working chamber b.

[0054] In addition, a sliding pin 31 , a damping seat 32 and a main valve core assembly 33 are provided in the valve body 30 . The main valve core assembly 33 is located on one side of the damping seat 32 . The sliding pin 31 passes through the damping seat 32 along the axial direction of the valve body 30 and is connected to the electromagnet assembly 10 .

[0055] At the same time, a first cavity 301 is formed between the damping seat 32 and the main valve core assembly 33, and a second cavity 302 is formed between the damping seat 32 and the electromagnet assembly 10. The first cavity 301 is connected to the compression working chamber b, and the second cavity 302 is connected to the recovery working chamber a through a throttling channel provided on the valve body 30.

[0056] Secondly, a first one-way valve unit 34 that is unidirectionally conductive along the direction pointing to the second cavity 302 is provided between the sliding pin 31 and the damping seat 32, and a second one-way valve unit 35 that is unidirectionally conductive along the direction pointing to the first cavity 301 is provided between the damping seat 32 and the main valve core assembly 33. The electromagnet assembly 10 drives the sliding pin 31 to move axially along the valve body 30, thereby changing the flow area between the first cavity 301 and the second cavity 302.

[0057] At this time, as set above, the first one-way valve unit 34 and the second one-way valve unit 35 can be used to coordinately control the hydraulic pressure in the compression condition and the recovery condition, so that the damping force in the compression condition or the recovery condition can be adjusted independently according to system requirements. At the same time, the flow area between the first cavity 301 and the second cavity 302 can be changed based on the coordination of the electromagnet assembly 10 and the sliding pin 31, that is, under the premise of unidirectional conduction between the first one-way valve unit 34 and the second one-way valve unit 35, the damping force in the compression condition or the recovery condition can be readjusted. This is not only conducive to achieving a good damping force adjustment effect in various conditions, but also conducive to the platform design and manufacturing of the shock absorber composite valve.

[0058] Based on the above overall introduction, in detail, when this embodiment is implemented, refer to Figure 2 and Figure 5 As shown in the figure, the passive valve assembly 20 includes a passive valve body connected to the valve body 30, and a sealing area 201 arranged on the passive valve body. With the cooperation of the passive valve body and the sealing area 201, the inner cavity of the shock absorber cylinder is divided into a recovery working chamber a and a compression working chamber b.

[0059] In addition, the first cavity 301 can be connected to the working cavity b through the compression of the passive valve assembly 20. The damping medium can be subjected to a fixed damping force when flowing through the passive valve assembly 20. The passive valve assembly 20 can enhance the overall damping force of the shock absorber composite valve to increase the application range of the shock absorber composite valve. At the same time, the related structural parts not mentioned in the passive valve assembly 20 of this embodiment can refer to the common passive valve structure or similar piston structure in the prior art, and will not be repeated here.

[0060] Furthermore, the electromagnet assembly 10 of this embodiment preferably includes an electromagnetic driving unit 101 and a pin 102 driven by the electromagnetic driving unit 101. In specific implementation, the electromagnet assembly 10 drives the sliding pin 31 to move through the pin 102. Figure 5 The state shown is used as an example to facilitate the description of the corresponding content. For example, the upper and lower positions of this embodiment are Figure 5 The upper and lower directions in the state shown, the inner and outer directions of this embodiment are Figure 5 The side close to the axial direction of the valve body and the side away from the axial direction of the valve body in the shown state are not described in detail below.

[0061] It should be noted that in this embodiment, the electromagnet assembly 10 and the valve body 30, as well as the sliding pin 31, the damping seat 32 and the main valve core assembly 33 in the valve body 30 together constitute the electromagnetic part of the shock absorber composite valve, and the passive valve assembly constitutes the mechanical part of the shock absorber composite valve. At the same time, the relevant structural parts not mentioned in the shock absorber composite valve of this embodiment can also refer to the various structures in the composite valve products well known to those skilled in the art, such as the composite valve in the Chinese utility model patent with patent number CN202322363226.5, etc., which will not be repeated here.

[0062] In addition, in this embodiment, as a preferred implementation form, Figure 4 and Figure 5 As shown, a first connecting channel 321 connecting the first cavity 301 and the second cavity 302 is provided between the damping seat 32 and the sliding pin 31, and the first one-way valve unit 34 includes a first valve member 341 provided in the first connecting channel 321, and a first elastic member 342 provided between the first valve member 341 and the sliding pin 31.

[0063] At the same time, as a preferred implementation form, the damping seat 32 of this embodiment is provided with a second connecting channel 322 connecting the first cavity 301 and the second cavity 302, and the second one-way valve unit 35 includes a second valve component 351 arranged in the second connecting channel 322, and a second elastic component 352 arranged between the second valve component 351 and the main valve core assembly 33.

[0064] As described above, the first one-way valve unit 34 and the second one-way valve unit 35 have simple structures, which is conducive to improving the stability of both. In specific applications, the first elastic member 342 and the second elastic member 352 are preferably springs commonly used by those skilled in the art, and the first valve member 341 and the second valve member 351 are preferably in the form of sheets, so as to facilitate the realization of the corresponding one-way conduction function.

[0065] Secondly, the damping seat 32 of the present embodiment is in the shape of an annulus arranged axially around the valve body 30 in terms of overall structure, and is provided with a center hole 320 coaxially arranged therethrough. The sliding pin 31 is coaxially penetrated in the center hole 320 with the center hole 320 to form the above-mentioned first connecting channel 321 located between the sliding pin 31 and the hole wall of the center hole 320, that is, the first connecting channel 321 is in the shape of an annulus as a whole. At this time, the first valve component 341 is sleeved and slidably arranged on the sliding pin 31 to ensure the movement stability of the first valve component 341 and the reliability of opening and closing the first connecting channel 321.

[0066] Furthermore, in this embodiment, as a preferred implementation form, Figure 5 As shown, a connecting sleeve 36 is provided at one end of the sliding pin 31 close to the second cavity 302 , the sliding pin 31 is connected to the electromagnet assembly 10 via the connecting sleeve 36 , and the first elastic member 342 is located between the connecting sleeve 36 and the first valve member 341 .

[0067] Here, by providing the connecting sleeve 36, it is convenient to realize the driving of the sliding pin 31 by the electromagnet assembly 10 and the arrangement and installation of the first elastic member 342. Figure 5 In the state shown, a connecting groove for cooperating with the pin shaft 102 is provided on the top of the connecting sleeve 36 , and the pin shaft 102 is abutted in the connecting groove, thereby realizing the linkage between the pin shaft 102 and the sliding pin 31 .

[0068] Combination Figure 5 and Figure 8 As shown in the figure, as a preferred implementation form, the damping seat 32 of this embodiment is provided with an annular groove 323 axially arranged around the valve body 30 on one side close to the second cavity 302, and the connecting port of the second connecting channel 322 connecting with the second cavity 302 is located in the annular groove 323, and a first throttling hole 32311 is provided in the annular groove 323.

[0069] In addition, a first protrusion 361 corresponding to the annular groove 323 is provided on the connecting sleeve 36. When the electromagnet assembly 10 drives the sliding pin 31 to slide, the first protrusion 361 can enter the annular groove 323, and the second cavity 302 is connected with the second connecting channel 322 through the first throttle hole 32311.

[0070] At the same time, as a preferred implementation form, in this embodiment, the connecting sleeve 36 is provided with a first through hole 362 that is arranged to penetrate along the axial direction of the valve body 30. A second throttle hole 32321 is provided in the annular groove 323. When the first protrusion 361 enters the annular groove 323, the second cavity 302 is communicated with the second communication channel 322 through the first through hole 362 and the second throttle hole 32321.

[0071] As set up as above, by setting up the annular groove 323, the first throttling hole 32311, the first protrusion 361, and cooperating with the first through hole 362 and the second throttling hole 32321, a part of the damping medium is limited to enter the second connecting channel 322 after passing through the first throttling hole 32311 and the annular groove 323, and a part of the damping medium is limited to enter the second connecting channel 322 after passing through the first through hole 362 and the second throttling hole 32321, thereby realizing the adjustment of the opening size of the second one-way valve unit 35 under the recovery condition, and realizing the adjustment of the hydraulic pressure in the second cavity 302, so as to facilitate the adjustment of the overall damping force and the opening size of the shock absorber composite valve.

[0072] In specific implementation, the annular groove 323 of this embodiment is formed by the concave side of the damping seat 32 facing the second cavity 302, and is formed with an inner groove wall 3232 close to the axial center of the damping seat 32 and an outer groove wall 3231 away from the axial center of the damping seat 32, the first throttle hole 32311 is specifically arranged on the outer groove wall 3231, and the second throttle hole 32321 is specifically arranged on the inner groove wall 3232;

[0073] When the first protrusion 361 enters the annular groove 323 , the first throttle hole 32311 is connected to the second cavity 302 and the annular groove 323 , and the second throttle hole 32321 is connected to the second cavity 302 , the first through hole 362 and the annular groove 323 .

[0074] Moreover, the number and arrangement of the first throttling holes 32311 and the second throttling holes 32321 can be set and adjusted accordingly according to actual throttling requirements. For example, the first throttling holes 32311 and the second throttling holes 32321 are four or six holes evenly spaced axially around the damping seat 32.

[0075] It can be understood that when the first protrusion 361 enters the annular groove 323, the damping medium needs to be divided into two paths to enter the second connecting channel 322, one path is the first throttling hole 32311-annular groove 323-second connecting channel 322, and the other path is the first through hole 362-second throttling hole 32321-annular groove 323-second connecting channel 322. At this time, compared with the damping medium directly entering the second connecting channel 322 through the second cavity 302 and the annular groove 323, the flow area from the second cavity 302 to the first cavity 301 is smaller, and the pressure borne by the second valve member 351 is also smaller. That is, when the damping medium directly enters the second connecting channel 322 through the second cavity 302 and the annular groove 323, the liquid pressure on the back pressure side (in the second cavity 302) is relatively large, which can form the 0A protection function of the recovery condition.

[0076] It is still necessary to mention that the above-mentioned second connecting channels 322 are preferably arranged in multiple axial intervals around the valve body 30, and the connecting port of each second connecting channel 322 and the second cavity 302 is located in the annular groove 323, and each second connecting channel 322 is correspondingly configured with a second valve member 351 and a second elastic member 352.

[0077] In addition, in this embodiment, as a preferred implementation form, combined with Figure 5 and Figure 6 As shown, a blocking block 311 for blocking the first communication channel 321 is provided at one end of the sliding pin 31 close to the first cavity 301 , and a third throttle hole 31121 connecting the first communication channel 321 and the first cavity 301 is provided on the blocking block 311 .

[0078] By providing a block 311 with a third throttling hole 31121, it is possible to ensure that the opening of the first one-way valve unit 34 is minimized when the electromagnet assembly 10 does not drive the sliding pin 31 to move, that is, the damping force from the first cavity 301 to the second cavity 302 under compression conditions is maximum, thereby facilitating the realization of the 0A protection function under compression conditions. At the same time, when the electromagnet assembly 10 drives the sliding pin 31 to move, the opening of the first one-way valve unit 34 can be increased to achieve damping force adjustment under compression conditions.

[0079] In specific implementation, the block 311 of this embodiment includes a bottom wall 3111 disposed on the bottom end of the sliding pin 31 (the end extending into the first cavity 301), and a side wall 3112 disposed on the bottom wall 3111, and the third throttle hole 31121 is disposed on the side wall 3112. Specifically, the side wall 3112 is arranged around the axial extension of the sliding pin 31. When the electromagnet assembly 10 is not energized, the side wall 3112 abuts against the damping seat 32. At this time, the first cavity 301 is connected to the first connecting channel 321 through the third throttle hole 31121.

[0080] Of course, the number and arrangement of the third throttling holes 31121 of this embodiment can be set and adjusted accordingly according to actual throttling requirements. For example, there can be four third throttling holes 31121 arranged on the side wall 3112, and the four third throttling holes 31121 can be evenly spaced axially around the sliding pin 31.

[0081] Also as a preferred implementation form, a valve core base 37 is provided in the valve body 30 of this embodiment, and the valve core base 37 is located on the side of the main valve core assembly 33 away from the first cavity 301, and the valve body 30 and the valve core base 37, the valve body 30 and the damping seat 32, the valve body 30 and the electromagnet assembly 10, and the connecting sleeve 36 and the sliding pin 31 are all threadedly connected.

[0082] Here, the main advantage of adopting the threaded connection is that it can reduce the dimensional accuracy and assembly accuracy requirements of each component, reduce costs, and thus facilitate the platform design and manufacturing of the shock absorber composite valve. The central part of the valve core base 37 is also formed with a fourth valve hole 371 for the damping medium to pass through.

[0083] Furthermore, in order to facilitate the screw connection and tightening of the sliding pin 31 and the connecting sleeve 36, a positioning groove 31111 may be preferably provided on the side of the blocking block 311 away from the sliding pin 31, such as Figure 7 As shown, the positioning groove 31111 can be, for example, specifically in a cross shape, and based on the threaded connection between the sliding pin 31 and the connecting sleeve 36, the connecting sleeve 36 can provide guidance for the pin shaft 102 to smoothly transmit it to the sliding pin 31, and can also be used to adjust the axial clearance between the pin shaft 102 and the sliding pin 31.

[0084] In addition, in this embodiment, as a preferred implementation form, Figure 5 As shown, the main valve core assembly 33 includes a main valve core 331 slidably arranged in the valve body 30, and a slider 332 arranged on the main valve core 331, a third elastic member 38 is arranged between the main valve core 331 and the damping seat 32, and the main valve core 331 is provided with a first valve hole 3311 connected to the compression working chamber b, and the slider 332 is provided with a second valve hole 3321 connecting the first valve hole 3311 and the first cavity 301.

[0085] Furthermore, the threaded connection between the slider 332 and the main valve core 331 is also conducive to reducing the dimensional accuracy and assembly accuracy requirements of the slider 332 and the main valve core 331, reducing manufacturing costs, and further facilitating the platform design and manufacturing of the shock absorber composite valve.

[0086] Here, it should be mentioned that in order to reduce the dimensional accuracy requirements and assembly accuracy requirements of each component, in this embodiment, in addition to the threaded connection between the valve body 30 and the valve core base 37, between the valve body 30 and the damping seat 32, between the valve body 30 and the electromagnet assembly 10, between the connecting sleeve 36 and the sliding pin 31, and between the slider 332 and the main valve core 331, other connection forms with higher assembly stability may also be used, such as pressing or welding, which can also be beneficial to the platform design and manufacturing of the shock absorber composite valve.

[0087] At this time, also as a preferred implementation form, a second protrusion 3322 is provided on the slider 332 of this embodiment, and one end of the second elastic member 352 abuts against the second protrusion 3322 to facilitate the arrangement and installation of the second elastic member 352.

[0088] In specific implementation, the third elastic member 38 of this embodiment can be a spring well known to those skilled in the art, just like the first elastic member 342 and the second elastic member 352. The slider 332 of this embodiment can specifically include a cylindrical body screwed into the main valve core, a center plate arranged in the body, a second valve hole 3321 penetratingly arranged on the center plate, and a second protrusion 3322 arranged on the outer side wall of the body and arranged along the circumference of the body, one end of the second elastic member 352 is sleeved on the body and abuts on the second protrusion 3322, and the other end of the second elastic member 352 abuts against the second valve member 351.

[0089] Moreover, to facilitate the assembly of the third elastic member 38, the outer wall of the damping seat 32 is provided with a third protrusion 324 arranged along its own circumference, and the main valve core 331 is provided with a mounting groove 3313 arranged axially around the valve body 30, and the two ends of the third elastic member 38 respectively abut against the third protrusion 324 and the bottom of the mounting groove 3313. The end of the main valve core 331 facing the valve core base 37 is preferably provided with a positioning hole 3312, and the positioning hole 3312 is used to position the main valve core 331, so as to facilitate the threaded connection between the main valve core 331 and the slider 332.

[0090] Of course, in addition to the threaded connection between the main valve core 331 and the slider 332, other connection forms with higher assembly stability can also be used, such as the above-mentioned press-fitting or welding, which can also facilitate the platform design and manufacturing of the shock absorber composite valve.

[0091] Furthermore, the valve body 30 is provided with a third valve hole 305 for connecting the recovery working chamber a and the fourth valve hole 371, and the main valve core assembly 33 also includes a control disk 333 arranged on the main valve core 331 facing the fourth valve hole 371. Specifically, under the action of the third elastic member 38, the control disk 333 abuts against the valve core base 37, and when the main valve core assembly 33 is in the closed position, a first communication space communicating with the fourth valve hole 371 is defined between the main valve core 331 and the control disk 333, and a second communication space 39 communicating with the third valve hole 305 is defined between the control disk 333 and the valve core base 37. When the main valve core assembly 33 moves from the closed position to the open position, the opening force of the main valve core assembly 33 mainly comes from the damping medium pressure of the first communication space or the second communication space 39 below the main valve core assembly 33.

[0092] Among them, under compression conditions, the force area of ​​the main valve core assembly 33 when it is opened is the area corresponding to the main valve core 331 and the first connecting space, that is, the area of ​​the main valve core 331 close to the control disk 333 minus the area of ​​its contact with the control disk 333; under recovery conditions, the force area of ​​the main valve core assembly 33 when it is opened is the annular area corresponding to the control disk 333 and the second connecting space 39, that is, the area of ​​the control disk 333 minus the area of ​​the fourth valve hole 371. Therefore, the medium pressure corresponding to the opening of the main valve core assembly 33 under compression conditions and recovery conditions can be adjusted separately. For example, it can be achieved by adjusting the contact area between the main valve core 331 and the control disk 333, adjusting the diameter of the control disk 333, etc., so as to realize the separate control of the opening pressure of the main valve core assembly 33 under compression conditions and recovery conditions, and the structure is simple, the adjustment difficulty is low, the reliability is high, and the design change cost is low.

[0093] In addition, in this embodiment, as a preferred implementation form, continue to refer to Figure 5 As shown, the throttling channel includes a fourth throttling hole 303 arranged radially along the valve body 30, and the fourth throttling holes 303 are multiple and arranged axially around the valve body 30, for example, there may be four, six or eight holes.

[0094] In specific implementation, as a preferred implementation form, in this embodiment, a plurality of detachable throttling parts are provided on the valve body 30, and each throttling part is provided with a fourth throttling hole 303. In this way, based on each throttling part, the fourth throttling hole 303 can be used as a separate component, which is convenient for the processing and adjustment of the shock absorber composite valve. Specifically, each throttling part can preferably be arranged in a cylindrical shape, and each throttling part can be connected to the valve body 30 by pressing or screwing.

[0095] Furthermore, as a preferred implementation form, at least one of the fourth throttle holes 303 is provided with a ball 304, and the fourth throttle hole 303 provided with the ball 304 is unidirectionally conducted in the direction pointing to the recovery working chamber a. Of course, the ball diameter of the ball 304 can adopt the standard ball diameter of the ball 304 in a common ball valve, so as to facilitate the realization of platform-based design and manufacturing.

[0096] It can be understood that a ball 304 is provided in part of the fourth throttling hole 303, which can realize one-way conduction from the second cavity 302 to the recovery working chamber a, so that the damping force from the recovery working chamber a to the second cavity 302 under the recovery condition is greater than the damping force from the second cavity 302 to the recovery working chamber a under the compression condition, thereby facilitating the use effect of the shock absorber composite valve.

[0097] In addition, it can be understood that the electromagnetic part and the hydraulic part of the shock absorber composite valve of this embodiment are relatively independent. Except for the pin shaft 102, which needs to be designed in coordination with the sliding pin 31 and the connecting sleeve 36, the internal structures of the electromagnetic part and the hydraulic part can be designed separately, and are easy to repair and replace, which can reduce maintenance costs. Moreover, the main components use threaded connections, sliding connections of the main valve core 331, abutment between the control disk 333 and the valve core base 37, and coordinated use of various springs, etc., which have relatively low requirements for dimensional accuracy and assembly accuracy, which is conducive to the realization of platform-based design and manufacturing.

[0098] The shock absorber composite valve of this embodiment is preferably suitable for shock absorbers on vehicles, and its electromagnet assembly 10 is connected to the piston rod of the shock absorber, and the passive valve assembly 20 acts as a piston at this time. During the driving process of the vehicle, due to the up and down bumps of the wheels, the electromagnet assembly 10 drives the valve body 30 and the passive valve assembly 20, and moves up and down in the shock absorber cylinder along with the piston rod, and then alternately generates high pressure in the recovery working chamber a or the compression working chamber b, and the damping medium on the high-pressure side (using oil familiar to those skilled in the art) will flow to the low-pressure side. The opening size between the recovery working chamber a or the compression working chamber b can be controlled by adjusting the electromagnet assembly 10, thereby controlling the speed of the oil flow between the compression working chamber b and the recovery working chamber a, so as to achieve the control of the damping force.

[0099] The opening force of the main valve core assembly 33 mainly comes from the hydraulic pressure below the control disk 333, wherein the hydraulic pressure in the compression condition is composed of the area of ​​the main valve core 331 close to the control disk 333 minus the area other than the contact area with the control disk 333, and in the recovery condition, the hydraulic pressure is composed of the annular area corresponding to the control disk 333 and the second connecting space 39, that is, the area of ​​the control disk 333 minus the area of ​​the fourth valve hole 371. The closing force of the main valve core assembly 33 is the sum of the elastic force of the third spring, the elastic force of the second elastic member 352, the hydraulic pressure of the first cavity 301 on the back pressure side, and the electromagnetic force transmitted after the pin 102 contacts the connecting sleeve 36.

[0100] The pressure regulation of the first cavity 301 on the back pressure side is divided into two working conditions: compression and recovery. In the compression working condition, the compression working chamber b is high pressure, and the oil first passes through the passive valve assembly 20 to reach the fourth valve hole 371 area of ​​the valve core base 37, and then passes through the first valve hole 3311 of the main valve core 331 to reach the slider 332, and then passes through the second valve hole 3321 on the slider 332 and then passes through the third throttle hole 31121 on the sliding pin 31 to reach the first connecting channel 321, overcome the elastic force of the first elastic member 342 on the first valve member 341 to open the first valve member 341, so that the oil passes through the first one-way valve unit 34 to reach the second cavity 302, and then through the fourth throttle hole 303 to discharge the oil on the high pressure side to the recovery chamber on the low pressure side, so as to achieve the purpose of regulating the pressure on the high pressure side.

[0101] During the recovery working condition, the recovery working chamber a is at high pressure. After the oil flows through part of the fourth throttling hole 303 to reach the second chamber 302, the oil in the second chamber 302 overcomes the elastic force of the second elastic member 352 to open the second valve member 351, so that the oil passes through the second one-way valve unit 35, and then passes through the second valve hole 3321 on the slider 332. The oil on the high-pressure side can be discharged to the low-pressure side compression chamber through the first valve hole 3311 and the fourth valve hole 371 on the main valve core 331, thereby achieving the purpose of regulating the pressure on the high-pressure side.

[0102] Due to the presence of the partially connected fourth throttle hole 303, the second cavity 302 is always connected to the recovery working chamber a. In the compression condition, since the compression working chamber b is the high-pressure side, the high-pressure oil enters the second connecting channel 322 and mortgages the second valve member 351 after passing through the fourth valve hole 371, the first valve hole 3311, the second valve hole 3321 and the first cavity 301. At this time, the upper side of the second valve member 351 is the low-pressure side and cannot be opened, thereby blocking the second connecting channel 322, so the sealing of the second connecting channel 322 in the compression condition can be guaranteed, and the back-pressure side oil can only be depressurized through the first connecting channel 321.

[0103] Similarly, in the recovery condition, the recovery working chamber a is on the high-pressure side, and the lower side of the first valve member 341 connected to the compression working chamber b is on the low-pressure side and cannot be opened, so the sealing of the first connecting channel 321 can be guaranteed in the recovery condition, and the back-pressure side oil can only be depressurized through the second connecting channel 322.

[0104] It is still worth mentioning that in the present embodiment, when the main valve core assembly 33 is opened, the restoration working chamber a and the compression working chamber b are always connected through the third valve hole 305 and the second connecting space 39, and based on the connection between the restoration working chamber a and the compression working chamber b, when the damping medium directly enters the second connecting channel 322 through the second cavity 302 and the annular groove 323, the liquid pressure on the back pressure side (inside the second cavity 302) is larger than the liquid pressure on the back pressure side (inside the second cavity 302) when the damping medium is divided into two paths to enter the second connecting channel 322, thereby forming the 0A protection function of the restoration condition.

[0105] The shock absorber composite valve of this embodiment can realize separate control of hydraulic pressure in compression condition and recovery condition through the coordinated setting of the first one-way valve unit 34 and the second one-way valve unit 35, so that the damping force in compression condition or recovery condition can be adjusted independently according to system requirements. At the same time, the flow area between the first cavity 301 and the second cavity 302 can be changed based on the coordination of the electromagnet assembly 10 and the sliding pin 31, that is, under the premise of unidirectional conduction of the first one-way valve unit 34 and the second one-way valve unit 35, the damping force in compression condition or recovery condition can be readjusted, which is conducive to platform-based design and manufacturing.

[0106] Embodiment 2

[0107] This embodiment relates to a shock absorber, which includes the shock absorber composite valve in the first embodiment.

[0108] The shock absorber of this embodiment, by setting the shock absorber composite valve in Example 1, can readjust the damping force under the premise of independently adjusting the damping force of the compression condition or the recovery condition, thereby facilitating the realization of platform-based design and manufacturing, and thus having a good use effect.

[0109] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A shock absorber composite valve, comprising an electromagnet assembly (10), a cylindrical valve body (30) and a passive valve assembly (20) which are sequentially arranged in a shock absorber cylinder, wherein the passive valve assembly (20) divides the shock absorber cylinder into a recovery working chamber (a) and a compression working chamber (b), characterized in that: The valve body (30) is provided with a sliding pin (31), a damping seat (32) and a main valve core assembly (33), wherein the main valve core assembly (33) is located on one side of the damping seat (32), and the sliding pin (31) penetrates the damping seat (32) along the axial direction of the valve body (30) and is connected to the electromagnet assembly (10); A first cavity (301) is formed between the damping seat (32) and the main valve core assembly (33), and a second cavity (302) is formed between the damping seat (32) and the electromagnet assembly (10), the first cavity (301) is communicated with the compression working chamber (b), and the second cavity (302) is communicated with the recovery working chamber (a) via a throttling channel provided on the valve body (30); A first one-way valve unit (34) is provided between the sliding pin (31) and the damping seat (32), and is one-way conductive along the direction pointing to the second cavity (302); a second one-way valve unit (35) is provided between the damping seat (32) and the main valve core assembly (33), and is one-way conductive along the direction pointing to the first cavity (301); the electromagnet assembly (10) drives the sliding pin (31) to move axially along the valve body (30), thereby changing the flow area between the first cavity (301) and the second cavity (302).

2. The shock absorber composite valve according to claim 1, characterized in that: A first communication channel (321) communicating the first cavity (301) and the second cavity (302) is provided between the damping seat (32) and the sliding pin (31); the first one-way valve unit (34) comprises a first valve member (341) provided in the first communication channel (321), and a first elastic member (342) provided between the first valve member (341) and the sliding pin (31); The damping seat (32) is provided with a second connecting passage (322) connecting the first cavity (301) and the second cavity (302); the second one-way valve unit (35) includes a second valve member (351) arranged in the second connecting passage (322), and a second elastic member (352) arranged between the second valve member (351) and the main valve core assembly (33).

3. The shock absorber composite valve according to claim 2, characterized in that: A connecting sleeve (36) is provided at one end of the sliding pin (31) close to the second cavity (302); the sliding pin (31) is connected to the electromagnet assembly (10) via the connecting sleeve (36); and the first elastic member (342) is located between the connecting sleeve (36) and the first valve member (341).

4. The shock absorber composite valve according to claim 3, characterized in that: An annular groove (323) arranged axially around the valve body (30) is provided on one side of the damping seat (32) close to the second cavity (302), and a communication port through which the second communication channel (322) communicates with the second cavity (302) is located in the annular groove (323), and a first throttling hole (32311) is provided in the annular groove (323); The connecting sleeve (36) is provided with a first protrusion (361) corresponding to the annular groove (323); when the electromagnet assembly (10) drives the sliding pin (31) to slide, the first protrusion (361) can enter the annular groove (323), and the second cavity (302) is connected to the second connecting channel (322) through the first throttle hole (32311).

5. The shock absorber composite valve according to claim 4, characterized in that: The connecting sleeve (36) is provided with a first through hole (362) which is arranged to penetrate the valve body (30) in the axial direction; A second throttling hole (32321) is provided in the annular groove (323); when the first protrusion (361) enters the annular groove (323), the second cavity (302) is connected to the second connecting channel (322) through the first through hole (362) and the second throttling hole (32321).

6. The shock absorber composite valve according to claim 3, characterized in that: A blocking block (311) for blocking the first connecting passage (321) is provided at one end of the sliding pin (31) close to the first cavity (301), and a third throttle hole (31121) connecting the first connecting passage (321) and the first cavity (301) is provided on the blocking block (311); and / or, A valve core base (37) is provided in the valve body (30), and the valve core base (37) is located on one side of the main valve core assembly (33), and the valve body (30) and the valve core base (37), the valve body (30) and the damping seat (32), the valve body (30) and the electromagnet assembly (10), and the connecting sleeve (36) and the sliding pin (31) are all connected by screwing, pressing or welding.

7. The shock absorber composite valve according to claim 2, characterized in that: The main valve core assembly (33) comprises a main valve core (331) slidably arranged in the valve body (30), and a slider (332) arranged on the main valve core (331), a third elastic member (38) is arranged between the main valve core (331) and the damping seat (32), and a first valve hole (3311) communicating with the compression working chamber (b) is arranged on the main valve core (331), and a second valve hole (3321) communicating with the first valve hole (3311) and the first chamber (301) is arranged on the slider (332); The slider (332) and the main valve core (331) are connected by screwing, pressing or welding, and / or the slider (332) is provided with a second protrusion (3322), and one end of the second elastic member (352) abuts against the second protrusion (3322).

8. The shock absorber composite valve according to any one of claims 1 to 7, characterized in that: The throttling passage comprises a fourth throttling hole (303) arranged radially along the valve body (30), and the fourth throttling hole (303) is a plurality of holes arranged axially at intervals around the valve body (30).

9. The shock absorber composite valve according to claim 8, characterized in that: The valve body (30) is provided with a plurality of detachable throttling components, each of which is provided with the fourth throttling hole (303); and / or, A sphere (304) is provided in at least one of the fourth throttling holes (303), and the fourth throttling hole (303) provided with the sphere (304) is unidirectionally conductive in a direction pointing toward the recovery working chamber (a).

10. A vibration absorber, characterized in that: The invention comprises the shock absorber composite valve according to any one of claims 1 to 9.

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