Damping valve and shock absorber

Abstract

The utility model provides a damping valve and a shock absorber. The damping valve comprises an installation base, a coil assembly and a clamping spring. A containing groove is formed in the outer wall of the coil assembly, and a limiting groove communicated with the containing groove is formed in the inner wall of the installation base. And a notch is formed in the mounting seat. The clamping spring comprises an operation part exposed at the notch, a clamping part clamped in the limiting groove and a deformation part clamped in the containing groove. The operation part, the clamping part and the deformation part are connected together. According to the damping valve, the clamping spring can be clamped between the mounting base and the coil assembly through the limiting groove and the containing groove, and the stability and reliability of the damping valve in the working process are ensured. And meanwhile, the operation part of the clamp spring is exposed at the notch, so that the coil assembly and the mounting seat are convenient to disassemble, and the maintenance and disassembly efficiency of the damping valve is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of damping valves, in particular to a damping valve and a shock absorber. BACKGROUND

[0002] With the development of science and technology, electronic products are increasingly widely used. In the automotive industry, with the development of new energy technology and intelligent driving technology, electrification is particularly common. For example, in the chassis system, a shock absorber with an electric control function is developed from a traditional shock absorber. When the car is running, the wheels will jump up and down with the uneven road surface, and the elastic elements (such as springs) in the chassis system will absorb the jumping of the wheels and convert the kinetic energy into elastic potential energy and store it in the elastic elements. By setting the shock absorber, the damping force provided by the shock absorber can attenuate the vibration of the elastic element, and convert the elastic potential energy into heat energy and dissipate in the air.

[0003] With the increasing demand of users, shock absorbers with electric control function gradually appear in the market. Its working principle is to increase the damping solenoid valve to control the opening size of the throttle passage, and different working currents correspond to different opening sizes, that is, damping forces, thereby achieving the effect of actively controlling the damping force. The damping solenoid valve on the shock absorber has a built-in type and an external type. The external damping solenoid valve usually adopts a scheme of separating the valve body and the coil, because the valve body needs to be threadedly connected with the shock absorber and ensure sealing, and the coil needs to be fixed in a direction to facilitate fixing the lead wire.

[0004] In the prior art, the fixation of the coil has a non-detachable scheme and a detachable scheme. For example, a circlip is added in the coil, and when the coil is inserted into the mounting hole, the circlip is compressed and deformed at the entrance chamfer. After installation, the circlip is stretched and expanded into the groove of the mounting hole under the action of elasticity. This scheme is simple to install, has low cost, and has high connection reliability, but the coil cannot be detached and must be damaged before it can be detached, which has a certain impact on production and after-sales. For another example, a "bottle cap" shaped part is installed outside the coil, and an external thread is provided on the outside of the coil mounting hole. After the coil is inserted, the "bottle cap" shaped part is tightened, thereby realizing the effect that the coil can be fixed and detached, but this scheme has high cost, the appearance is not compact, is easy to loosen, and has low reliability.

[0005] Therefore, it is necessary to provide an improved damping valve and shock absorber to solve the above problems. INNOVATION CONTENT

[0006] The present application provides a damping valve and a shock absorber which have high connection stability and are convenient to detach.

[0007] The application provides a damping valve, which comprises a mounting seat, a coil assembly and a clasp spring, a receiving groove is formed in the outer wall of the coil assembly, a limiting groove is formed in the inner wall of the mounting seat and communicates with the receiving groove, an opening is formed in the mounting seat, the clasp spring comprises an operating part exposed in the opening, a clamping part clamped in the limiting groove and a deformation part clamped in the receiving groove, and the operating part, the clamping part and the deformation part are connected together.

[0008] Further, an opening is arranged on the clasp spring, the clamping part is separated from the limiting groove by operating the operating part to reduce the opening, so that the coil assembly is separated from the mounting seat.

[0009] Further, the operating part is provided as two, the two operating parts are oppositely arranged and connected with the deformation part, and the opening is located between the two operating parts; when disassembling, the two operating parts are close to each other.

[0010] Further, the clamping part is provided as three, one of the clamping parts is connected between the two deformation parts, and the remaining two clamping parts are connected between the operating part and the deformation part.

[0011] Further, the opening is located on the side of the clasp spring away from the opening, the clamping part connected between the two deformation parts is the operating part.

[0012] Further, the operating part is in a straight line, a circle or an arc shape; the clamping part is in an arc shape; and the deformation part is in a straight line.

[0013] Further, the damping valve further comprises a valve body assembly, a receiving space is formed in the mounting seat; the valve body assembly and part of the coil assembly are accommodated in the receiving space, the coil assembly is sleeved above the valve body assembly; an external thread is formed on the outer side of the valve body assembly, and the valve body assembly and the mounting seat are threadedly connected through the external thread.

[0014] Further, the coil assembly comprises a main body part and a step part fixed to one side of the main body part, the main body part is in a recessed shape, the main body part has two inclined surfaces, and the deformation part is attached to the inclined surfaces; the step part is in a recessed shape from inside to outside, the step part has two sliding surfaces between the two inclined surfaces, and the operating part is abutted on the sliding surfaces; when disassembling, the operating part slides along the sliding surfaces.

[0015] Further, a chamfer is arranged at the upper edge of the mounting seat, the chamfer and the side wall of the mounting seat jointly form the limiting groove, and the chamfer is abutted on the outer wall of the coil assembly.

[0016] Further, an outer side of the coil assembly is sleeved with a sealing ring, and the sealing ring is located below the snap spring; the sealing ring abuts against the side wall of the mounting seat.

[0017] The application further provides a shock absorber comprising a shock absorber body and the damping valve described above, wherein the damping valve is arranged on the shock absorber body, and the mounting seat is fixed with the shock absorber body.

[0018] Further, the damping valve is provided as two, and the two damping valves are arranged side by side.

[0019] The limiting groove and the accommodating groove can clamp the snap spring between the mounting seat and the coil assembly, so as to ensure the stability and reliability of the assembly of the coil assembly and the mounting seat during operation. Meanwhile, the operation part of the snap spring is exposed at the gap, so as to facilitate the disassembly of the coil assembly and the mounting seat, and improve the efficiency of the maintenance and disassembly of the damping valve. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a structural schematic view of the damping valve of the application.

[0021] Figure 2 is Figure 1 is an exploded schematic view of the damping valve shown in FIG. 1.

[0022] Figure 3 is Figure 1 is a sectional view of the damping valve shown in FIG. 1.

[0023] Figure 4 is Figure 1 is a sectional view of the damping valve shown in FIG. 1 from another perspective.

[0024] Figure 5 is Figure 2 is a structural schematic view of the snap spring.

[0025] Figure 6 is a sectional schematic view of the damping valve of the application at the snap spring, wherein the clamping part of the snap spring is clamped in the limiting groove.

[0026] Figure 7 is Figure 6 is a sectional schematic view of the damping valve at the snap spring, wherein part of the clamping part of the snap spring is out of the limiting groove.

[0027] Figure 8 is Figure 6 is a sectional schematic view of the damping valve at the snap spring, wherein the clamping part of the snap spring is completely out of the limiting groove.

[0028] Figure 9 is a sectional schematic view of the damping valve of another embodiment of the application at the snap spring, wherein the clamping part of the snap spring is clamped in the limiting groove.

[0029] Figure 10 is Figure 9 is a sectional view of the damping valve at the snap spring, wherein the part of the snap spring is out of the limiting slot.

[0030] Figure 11 is Figure 9 is a sectional view of the damping valve at the snap spring, wherein the part of the snap spring is out of the limiting slot.

[0031] Figure 12 is a schematic view of the shock absorber of the present application.

[0032] Figure 13 is a schematic view of the shock absorber of another embodiment of the present application.

[0033] BRIEF DESCRIPTION OF DRAWINGS

[0034] 100, shock absorber body; 10, mounting seat; 101, side wall; 11, limiting slot; 12, opening; 13, accommodating space; 14, internal thread; 15, chamfer; 20, coil assembly; 21, accommodating slot; 22, main body part; 221, inclined surface; 23, step part; 231, sliding surface; 24, sealing ring; 30, snap spring; 31, operating part; 32, clamping part; 33, deformation part; 34, opening; 40, valve body assembly; 41, external thread; 42, protruding column. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments (or, the “embodiments”) of the present application will be described clearly and completely in conjunction with the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated.

[0036] If the embodiments of the present application involve directional indications or positional relationships (such as up, down, left, right, front, back, inner, outer, top, bottom, center, vertical, horizontal, longitudinal, transverse, length, width, counterclockwise, clockwise, axial, radial, circumferential, etc.), such terms are only used to explain the relative positional relationships, movement conditions, etc. between the components in a certain posture (as shown in the drawings); if the certain posture changes, the directional indications or positional relationships also change accordingly. In addition, the terms “first”, “second”, etc. in the embodiments of the present application are only used for convenience of description, and cannot be understood as indicating or implying relative importance.

[0037] Referring to Figures 1 to 4As shown, the present application provides a damping valve, which comprises a mounting seat 10, a coil assembly 20, a snap spring 30 and a valve body assembly 40. Part of the coil assembly 20 is located in the mounting seat 10, and the remaining part of the coil assembly 20 is located above the mounting seat 10. The snap spring 30 is clamped between the mounting seat 10 and the coil assembly 20 and clamps and fixes the mounting seat 10 and the coil assembly 20. The valve body assembly 40 is located in the mounting seat 10. The valve body assembly 40 is threadedly connected with the mounting seat 10. The coil assembly 20 is sleeved above the valve body assembly 40.

[0038] The mounting seat 10 has a side wall 101 which encloses a receiving space 13. Part of the coil assembly 20, the snap spring 30 and the valve body assembly 40 are received in the receiving space 13. A limiting groove 11 is formed on the inner wall of the mounting seat 10, and part of the snap spring 30 is clamped in the limiting groove 11. An opening 12 is formed on the mounting seat 10, and part of the snap spring 30 is exposed at the opening 12. An internal thread 14 is formed on the inner wall of the mounting seat 10, and the valve body assembly 40 is threadedly connected with the mounting seat 10 through the internal thread 14.

[0039] A chamfer 15 is arranged at the upper edge of the mounting seat 10, and the chamfer 15 and the side wall 101 jointly enclose the limiting groove 11. One side of the chamfer 15 abuts against the outer wall of the coil assembly 20. The chamfer 15 is located above the limiting groove 11 and extends towards the inside of the mounting seat 10. The length of the chamfer 15 is greater than or equal to the inner diameter of the limiting groove 11, so as to prevent the snap spring 30 from being pulled out of the limiting groove 11. The arrangement of the chamfer 15 avoids the coil assembly 20 from falling off due to external force in some environments with large vibration.

[0040] Through the arrangement of the limiting groove 11, the snap spring 30 can stably position the mounting seat 10 and the coil assembly 20. At the same time, the opening 12 enables the operator to operate the snap spring 30 to be separated from the limiting groove 11, so as to realize the quick separation of the coil assembly 20 and the mounting seat 10, simplify the assembly and disassembly process, and improve the work efficiency.

[0041] According to the embodiment of the present application, the limiting groove 11 is in the shape of a ring, and the opening 12 is arranged at the limiting groove 11 of the mounting seat 10, so that the limiting groove 11 is in the shape of an open ring. The opening 12 is in the shape of a rectangle. In the embodiment of the present application, the opening 12 is arranged as one. In addition, the opening 12 can also be arranged as two or more. The two openings 12 are oppositely arranged, and the plurality of openings 12 are arranged along the side wall 101.

[0042] According to other embodiments of the present application, the valve body assembly can be connected with the mounting seat through other connection modes (such as buckling, welding, etc.).

[0043] Referring to Figures 6 to 8As shown, the coil assembly 20 comprises a main body portion 22 and a step portion 23 fixed to one side of the main body portion 22. Both the main body portion 22 and the step portion 23 are inwardly recessed. The main body portion 22 has two opposite inclined surfaces 221. Part of the clamping spring 30 abuts against the inclined surfaces 221. The step portion 23 has two sliding surfaces 231 between the two inclined surfaces 221. Part of the clamping spring 30 abuts against the sliding surfaces 231.

[0044] According to other embodiments of the present application, a plurality of step portions can be provided to provide a larger contact area and better cooperation with the clamping spring, so as to adapt to clamping springs of different sizes and types.

[0045] The coil assembly 20 is provided with a receiving groove 21 on the outer wall thereof. The receiving groove 21 is flush with the limiting groove 11 and is in communication with the limiting groove 11. Part of the clamping spring 30 is received in the receiving groove 21. The coil assembly 20 is provided with a sealing ring 24 on the outer side thereof, which is below the clamping spring 30. The sealing ring 24 abuts against the side wall 101 of the mounting base 10. The sealing ring 24 provides good sealing performance, so as to prevent dust and moisture from entering the coil assembly 20, thereby ensuring normal operation of the coil assembly 20 and prolonging the service life thereof.

[0046] Referring to Figure 5 As shown, the clamping spring 30 comprises an operating portion 31, a clamping portion 32 and a deformation portion 33 connected together. The operating portion 31 is exposed at the gap 12. The clamping portion 32 is clamped in the limiting groove 11. The deformation portion 33 is clamped in the receiving groove 21. The clamping spring 30 is provided with an opening 34. The opening 34 is reduced by operating the operating portion 31. The clamping portion 32 is disengaged from the limiting groove 11 by operating the operating portion 31, so as to separate the coil assembly 20 from the mounting base 10.

[0047] The operating portion 31 is provided in two, which are opposite to each other and connected to the deformation portion 33. The opening 34 is between the two operating portions 31. The gap 12 is between the two operating portions 31. During disassembly, the two operating portions 31 are close to each other. The clamping portion 32 is provided in three, one of which is connected between the two deformation portions 33, and the remaining two are connected between the operating portion 31 and the deformation portion 33.

[0048] According to the embodiments of the present application, the operating portion 31 is a circle. The three clamping portions 32 are arc-shaped. The deformation portion 33 is a straight line. The deformation portion 33 abuts against the inclined surface 221. The operating portion 31 abuts against the sliding surface 231. During disassembly, the operating portion 31 slides along the sliding surface 231.

[0049] When the coil assembly 20 is detached from the mounting base 10, the two operation portions 31 are moved downward and close to each other along the sliding surface 231 by using the pliers or the clamp to clamp the operation portion 31. The clamping portion 32 between the two operation portions 31 is moved downward and separated from the limiting groove 11, and the clamping portion 32 is accommodated in the accommodating groove 21. The two deformation portions 33 gradually abut against the inclined surface 221. The operation portion 31 extends from the gap 12.

[0050] Referring to Figures 9 to 11 The clamping spring 30 is another embodiment, as shown. The operation portion 31 is provided in three, two operation portions 31 are oppositely arranged and connected with the clamping portion 32, and the opening 34 is between the two operation portions 31. The other operation portion 31 is connected between the two deformation portions 33. The gap 12 is on the side of the clamping spring 30 away from the opening 34, i.e. the side of the operation portion 31 connected between the two deformation portions 33. When detached, the two operation portions 31 are close to each other. The clamping portion 32 is provided in two, and the two clamping portions 32 are connected between the operation portion 31 and the deformation portion 33.

[0051] According to the embodiment of the present application, one operation portion 31 between the deformation portions 33 is arc-shaped, and the other two operation portions 31 are straight. The two clamping portions 32 are arc-shaped. The deformation portion 33 is straight. The deformation portion 33 abuts against the inclined surface 221. The two operation portions 31 connected with the clamping portion 32 are close to each other.

[0052] When the coil assembly 20 is detached from the mounting base 10, the operation portion 31 between the two deformation portions 33 is pushed by using the pliers or the pusher, and the operation portion 31 is moved downward and separated from the limiting groove 11. The two clamping portions 32 are accommodated in the accommodating groove 21. The other two operation portions 31 are close to each other, and the opening 34 is reduced. The two deformation portions 33 gradually abut against the inclined surface 221.

[0053] The valve body assembly 40 is externally threaded 41, which is matched with the internal thread 14. The valve body assembly 40 is threadedly connected with the mounting base 10. The upper portion of the valve body assembly 40 is provided with a protruding column 42. The protruding column 42 extends into the coil assembly 20 from below.

[0054] Referring to Figure 12 and Figure 13 As shown, the present application also provides a shock absorber, which comprises a shock absorber body 100 and the damping valve described above, the damping valve is arranged on the shock absorber body 100, and the mounting base 10 is fixed with the shock absorber body 100.

[0055] According to the embodiment of the present application, the damping valve can be provided in two, and the two damping valves are arranged side by side. The damping valve is perpendicular to the shock absorber body 100.

[0056] The limiting groove 11 and the accommodating groove 21 of the application can clamp the snap spring 30 between the mounting seat 10 and the coil assembly 20, and ensure the stability and reliability of the assembly of the coil assembly 20 and the mounting seat 10 during the working process. At the same time, the operation part 31 of the snap spring 30 is exposed at the gap 12, which facilitates the disassembly of the coil assembly 20 and the mounting seat 10, and improves the efficiency of the disassembly of the damping valve.

[0057] It should be noted that the technical solutions or technical features described in the above embodiments can be combined or supplemented with each other without conflict. The scope of protection of the application is not limited to the precise structure described in the above embodiments and shown in the drawings; any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the application shall be included in the scope of protection of the application.

Claims

1. A damper valve, characterized by The application relates to a damping valve, which comprises a mounting seat, a coil assembly and a snap spring, a receiving groove is formed in the outer wall of the coil assembly, a limiting groove which is communicated with the receiving groove is formed in the inner wall of the mounting seat, an opening is formed in the mounting seat, the snap spring comprises an operating part exposed in the opening, a clamping part clamped in the limiting groove and a deformation part clamped in the receiving groove, and the operating part, the clamping part and the deformation part are connected together.

2. The damper valve of claim 1, wherein An opening is arranged on the snap spring, the clamping part is pulled out of the limiting groove by operating the operating part to reduce the opening, so that the coil assembly is separated from the mounting seat.

3. The damper valve of claim 2, wherein, The operating part is arranged in two parts, the two operating parts are oppositely arranged and connected with the deformation part, and the opening is located between the two operating parts; when the damping valve is disassembled, the two operating parts are close to each other.

4. The damper valve of claim 3, wherein The clamping part is arranged in three parts, one of the clamping parts is connected between the two deformation parts, and the remaining two clamping parts are connected between the operating part and the deformation part.

5. The damper valve of claim 4, wherein, The opening is located on the side of the snap spring away from the opening, and the clamping part connected between the two deformation parts is the operating part.

6. The damper valve of claim 1, wherein, The operating part is in a straight line, a circle or an arc shape; the clamping part is in an arc shape; and the deformation part is in a straight line.

7. The damper valve of claim 1, wherein The damping valve further comprises a valve body assembly, a receiving space is formed in the mounting seat; the valve body assembly and part of the coil assembly are accommodated in the receiving space, the coil assembly is arranged above the valve body assembly; an outer thread is formed on the outer side of the valve body assembly, and the valve body assembly is threadedly connected with the mounting seat through the outer thread.

8. The damper valve of claim 1, wherein, The coil assembly comprises a main body part and a step part fixed to one side of the main body part, the main body part is in a recessed shape, the main body part has two inclined surfaces, and the deformation part is abutted against the inclined surfaces; the step part is in a recessed shape from inside to outside, the step part has two sliding surfaces located between the two inclined surfaces, and the operating part is abutted against the sliding surfaces; when the damping valve is disassembled, the operating part slides along the sliding surfaces.

9. The damper valve of claim 1, wherein, A chamfer is arranged at the upper edge of the mounting seat, the chamfer and the side wall of the mounting seat jointly form the limiting groove, and the chamfer is abutted against the outer wall of the coil assembly.

10. The damper valve of claim 1, wherein, A sealing ring is arranged on the outer side of the coil assembly, and the sealing ring is located below the snap spring; and the sealing ring is abutted against the side wall of the mounting seat.

11. A damper characterized by The damping valve comprises a shock absorber body and the damping valve as claimed in any one of claims 1 to 10, the damping valve is arranged on the shock absorber body, and the mounting seat is fixed to the shock absorber body.

12. The damper of claim 11, wherein The damping valve is arranged in two parts, and the two damping valves are arranged side by side. The damping valve is arranged in two parts, and the two damping valves are arranged side by side.

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