External damping valve device for a shock absorber and shock absorber for a vehicle

Abstract

The utility model relates to a kind of external damping valve device for shock absorber and for vehicle's shock absorber, external damping valve device includes electromagnetic valve main body, sleeve and threaded ring;One end of the sleeve is connected with the lateral wall of shock absorber outer cylinder, the other end of the sleeve extends outward along the radial direction of the shock absorber outer cylinder;The threaded ring that cooperates with the sleeve is sleeved on the electromagnetic valve main body, the threaded ring is at least partially located between the electromagnetic valve main body and the sleeve, the electromagnetic valve main body is fixed in the inside of the sleeve by the threaded ring. By using threaded ring to assemble electromagnetic valve main body on the outer lateral wall of shock absorber outer cylinder, only need to position the rotation angle of electromagnetic valve main body once, without continuously rotating electromagnetic valve main body, avoid installing tool directly clamping electromagnetic valve main body to produce assembly damage.

Description

Technical Field

[0001] This utility model relates to an external damping valve device for a vibration damper, which has a threaded ring for fixing the body of a solenoid valve, and to a vibration damper including the damping valve device. Background Technology

[0002] As automotive chassis become increasingly intelligent, the development of intelligent suspension is progressing rapidly. Traditional suspension adjustments rely on pre-set mechanical structures and cannot dynamically adjust in real time according to road conditions or driving styles. Semi-active suspension, however, incorporates an electronic control system, enabling it to actively control suspension damping based on road conditions or the driver's driving style. The key component for electronic control in semi-active suspension is the variable damping shock absorber. Compared to traditional shock absorbers, it allows for electronic control of damping changes. The semi-active suspension controller detects vehicle status through sensors and, based on pre-set algorithms and calibration parameters, controls the current value of the variable damping shock absorber to achieve damping changes. This allows the vehicle to more accurately handle various road conditions during driving, providing the driver with a superior handling experience.

[0003] One way to implement a variable damping shock absorber is to build an additional solenoid valve inside or outside the traditional shock absorber, and to change the damping value of the shock absorber by controlling the opening of the solenoid valve system.

[0004] The external solenoid valve is a key component of the external solenoid valve shock absorber. It is connected to the vehicle's electronic control system (such as the electronic control unit, ECU) via a power cable and receives signal input from the electronic control system. It has a complex and delicate structure inside. During the shock absorber's recovery and compression strokes, the oil flows through the inside of the solenoid valve to meet the damping force requirements of the shock absorber's recovery and compression strokes.

[0005] During the assembly of an external solenoid valve, it needs to be positioned in a specific location to optimize the connection with the power cord. However, in the existing technology, the installation of the solenoid valve body in a specific position inevitably requires the use of tools to clamp the solenoid valve body. The assembly damage caused by this process will to some extent impair the accuracy of the solenoid valve. Initial installation damage may even affect the overall performance and service life of the shock absorber.

[0006] It should be noted that the information disclosed in the background section of this utility model is intended only to enhance the understanding of the general background of this utility model, and should not be regarded as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0007] To overcome the aforementioned shortcomings, this utility model provides an optimized external damping valve device and vibration damper for vibration dampers, which can accurately install the external solenoid valve in a specific position while avoiding damage to the external solenoid valve during installation.

[0008] According to one aspect of the present invention, an external damping valve device for a shock absorber is provided, comprising a solenoid valve body, a sleeve, and a threaded ring, wherein one end of the sleeve is connected to the side wall of the outer tube of the shock absorber, and the other end of the sleeve extends outward along the radial direction of the outer tube; the solenoid valve body is fitted with a threaded ring that mates with the sleeve; characterized in that the threaded ring is at least partially located between the solenoid valve body and the sleeve, and the solenoid valve body is fixed inside the sleeve by the threaded ring; the threaded ring includes a threaded section and an mounting section, and the mounting section is uniformly provided with at least one first groove along the circumference of the threaded ring.

[0009] Preferably, the sleeve includes a receiving part and a receiving part, the inner wall of the receiving part is provided with an internal thread, and the outer wall of the threaded section of the threaded ring is provided with an external thread that mates with the internal thread.

[0010] Preferably, the external thread of the threaded ring extends from the end of the threaded section to the end of the mounting section, and both the end of the threaded section and the end of the mounting section are located near the outer tube of the damper in the axial direction; the end face of the threaded section has a chamfer.

[0011] Preferably, the threaded ring further includes a compensation section, and the mounting section, the threaded section and the compensation section are arranged sequentially along the axial direction of the threaded ring, wherein the compensation section is an annular structure extending along the axial direction of the threaded ring.

[0012] Preferably, the mounting section includes a plurality of first grooves and the plurality of first grooves are spaced apart, with a boss formed between two adjacent first grooves.

[0013] Preferably, a limiting step is also formed on the body of the solenoid valve.

[0014] Preferably, the end of the threaded segment abuts against the end of the limiting step.

[0015] Preferably, the threaded ring is a one-piece molded part.

[0016] Preferably, the top of the solenoid valve body is also provided with a plurality of second grooves, and the groove direction of the second grooves is the same as that of the first grooves.

[0017] According to another aspect of the present invention, a shock absorber for a vehicle is provided, comprising: at least one external damping valve device according to any one of the preceding claims; an outer tube and an inner tube coaxially disposed with respect to the outer tube, wherein a compensation space for accommodating hydraulic fluid is provided between the outer tube and the inner tube; a working piston connected to a piston rod, the working piston being disposed inside the inner tube in a reciprocating manner, wherein the internal space of the inner tube is divided into a first working space and a second working space by the working piston; and an intermediate tube disposed within the compensation space, the intermediate tube being mounted on the inner tube, wherein the intermediate tube has a flange region for attaching the external damping valve device to the intermediate tube.

[0018] The external damping valve device and vibration damper provided by this utility model have the following advantages: An external damping valve device for a shock absorber includes a solenoid valve body, a sleeve, and a threaded ring. The sleeve is located on the outer wall of the shock absorber's outer tube and is used to fix the solenoid valve body. A threaded ring that mates with the sleeve is fitted onto the solenoid valve body, with the threaded ring at least partially located between the solenoid valve body and the sleeve. The solenoid valve body is fixed inside the sleeve by the threaded ring. The threaded ring includes a threaded section and an installation section. The installation section has multiple first grooves evenly spaced along the circumference of the threaded ring, which are used to mate with an installation tool. When installing the solenoid valve body, the solenoid valve body with the threaded ring is first inserted into the sleeve and twisted to a preset position for optimal connection with the power cord. Then, the installation tool is aligned with the first groove of the threaded ring's installation section. Subsequently, torque is applied evenly and slowly to the installation tool, causing the threaded section of the threaded ring to gradually screw into the sleeve, thereby assembling the solenoid valve body onto the outside of the shock absorber's outer tube. During the installation of this external damping valve device, the solenoid valve body is fixed inside the sleeve by rotating the threaded ring sleeved on the outside of the solenoid valve body. The rotation angle of the solenoid valve body only needs to be positioned once, without the need to continuously rotate the solenoid valve body, thus avoiding assembly damage to the solenoid valve body caused by the installation tools directly clamping the solenoid valve body. Attached Figure Description

[0019] The present invention will now be further described with reference to several embodiments in the accompanying drawings.

[0020] Figure 1 This is a schematic diagram of a longitudinal cross-sectional view of a vibration damper according to an embodiment of this application; Figure 2 This is a perspective view of a solenoid valve body with a threaded ring sleeved on the outer side in one embodiment of this application; Figure 3 This is a cross-sectional structural schematic diagram of the external damping valve of the shock absorber in one embodiment of this application; Figure 4 This is a cross-sectional structural diagram of a threaded ring in one embodiment of this application; Figure 5 This is a cross-sectional view of the threaded ring in another embodiment of this application. Detailed Implementation

[0021] The embodiments of this utility model are described in detail below. These embodiments are implemented based on the technical solution of this utility model and provide detailed implementation methods and specific operation processes. However, the protection scope of this utility model is not limited to the following embodiments.

[0022] In this utility model, "above", "below", "upward", and "downward" represent vertical positional relationships, but are not limited to vertical above and vertical below. Those skilled in the art will understand that diagonally above and diagonally below are also within the scope of "above" and "below" in this utility model, as are tilted upward and tilted downward.

[0023] The technical problem solved by this utility model can be achieved by the following preferred embodiments.

[0024] To solve the above-mentioned technical problems, this invention proposes an external damping valve device for the shock absorber 100, such as... Figure 1 As shown, it includes: a solenoid valve body 1, a sleeve 2, and a threaded ring 3, wherein one end of the sleeve 2 is connected to the side wall of the outer tube 4 of the shock absorber 100, and the other end of the sleeve 2 extends outward along the radial direction of the outer tube 4. The sleeve 2 is located outside the outer tube 4 and is used to fix the solenoid valve body 1, so as to realize a reliable connection between the solenoid valve body 1 and the shock absorber cylinder, and make the entire system form a complete passage.

[0025] Figure 2 This is a perspective view of a solenoid valve body 1 with a threaded ring 3 fitted on its outer side, according to one embodiment of this application. It can be seen that the threaded ring 3 is fitted onto the outer side of the solenoid valve body 1, and the solenoid valve body 1 is assembled into the sleeve 2 with the threaded ring 3 fitted on it. The solenoid valve body 1 is connected to the sleeve 2 via the threaded ring 3, specifically as follows... Figure 1-2 As shown, the threaded ring 3 is at least partially located between the solenoid valve body 1 and the sleeve 2. The solenoid valve body 1 is fixed inside the sleeve 2 by the threaded ring 3. The threaded ring 3 includes a threaded section 5 and an installation section 6. The threaded section 5 is threadedly connected to the sleeve 2. The installation section 6 is used to position the installation tool during installation. Specifically, the installation section 6 has at least one first groove 12 evenly provided along the circumference of the threaded ring 3 to mate with the installation tool, so that the installation tool and the threaded ring 3 fit tightly together and apply force to the installation tool. This torque is transmitted to the threaded ring 3 through the installation tool, so that the threaded ring 3 is gradually screwed into the sleeve 2.

[0026] When installing the solenoid valve body 1, first insert the solenoid valve body 1, with the threaded ring 3 fitted on it, into the sleeve 2, and twist it to the preset position in one go for optimal connection with the power cord. Then, align the installation tool with the first groove 12 of the installation section 6 of the threaded ring 3, and then apply torque evenly and slowly to the installation tool, so that the threaded section 5 of the threaded ring 3 gradually screws into the sleeve 2, thereby assembling the solenoid valve body 1 onto the outer wall of the outer tube 4. In the installation process of this external damping valve device, the solenoid valve body 1 is fixed in the sleeve 2 by rotating the threaded ring 3 fitted on the outside of the solenoid valve body 1. The rotation angle of the solenoid valve body 1 only needs to be positioned once, without the need to continuously rotate the solenoid valve body 1, avoiding assembly damage to the solenoid valve body 1 caused by the installation tool directly clamping it.

[0027] Figure 3 This is a cross-sectional structural schematic diagram of the external damping valve device of the shock absorber in one embodiment of this application. Figure 3 As can be seen, the sleeve 2 includes a receiving part 7 and a receiving part 8. The inner wall of the receiving part 7 is provided with internal threads, and the outer wall of the threaded section 5 of the threaded ring 3 is provided with external threads that mate with the internal threads of the receiving part 7. In the assembled state, that is, the threaded section 5 of the threaded ring 3 is fully threadedly connected to the receiving part 7 of the sleeve 2, and the end of the threaded ring 3 abuts against the top of the limiting step 22. Figure 3 It can be clearly seen that the solenoid valve body 1 has been fixed inside the sleeve 2. In this state, the threaded section 5 of the threaded ring 3 is threadedly engaged with the receiving part 7 of the sleeve 2. The receiving part 8 of the sleeve 2 accommodates most of the structure of the solenoid valve body 1, thereby supporting and enclosing the structure of the solenoid valve body 1 and preventing the solenoid valve body 1 from being damaged by corrosion, collision and other factors in complex environments.

[0028] from Figure 2-3 It can also be seen that a limiting step 22 is formed on the solenoid valve body 1. The threaded ring 3, which is fitted on the outside of the solenoid valve body 1, is stopped by the limiting step 22 to prevent it from falling off the solenoid valve body 1. Specifically from Figure 3 As can be seen, the solenoid valve body 1 includes a large-diameter section and a small-diameter section, and the limiting step 22 is a limiting step formed between the large-diameter section and the small-diameter section. In the assembled state, the end of the threaded section 5 in the threaded ring 3 is in complete contact with the limiting step 22 to achieve the limiting of the threaded ring.

[0029] Figure 4 and Figure 5 These are cross-sectional structural diagrams of the two types of threaded rings 3 provided by this utility model.

[0030] from Figure 4 and Figure 5 As can be seen, the mounting section 6 includes multiple first grooves 12, which are spaced apart, and a boss 11 is formed between two adjacent first grooves 12. Figure 4 In the illustrated embodiment, it can be seen that the external thread of the threaded ring 3 extends from the end of the threaded section 5 to the end of the mounting section 6, and both the end of the threaded section 5 and the end of the mounting section 6 are... Figure 1 In the case shown, when connected to the outer tube 4, the end is closer to the outer tube 4 in the axial direction; Figure 4 , 5 In the case shown, the aforementioned "end" refers to the lower end; similarly, in this invention, "top" refers to the end opposite to the end. The end face of the threaded segment 5 has a chamfer 9. During assembly, the chamfer 9 can guide the external thread of the threaded ring 3 to align with the internal thread inlet of the receiving part 7 in the sleeve 2, reducing jamming during initial screwing, lowering the risk of thread mis-threading, and thus improving assembly efficiency.

[0031] Figure 5 A cross-sectional view of the threaded ring 3 in another embodiment is shown, relative to... Figure 4 The threaded ring 3 shown in the figure, Figure 5 The threaded ring 3 also includes a compensation section 10. The mounting section 6, threaded section 5, and compensation section 10 are arranged sequentially along the axial direction of the threaded ring 3. The compensation section 10 is an annular structure extending along the axial direction of the threaded ring 3. In practical applications, the solenoid valve body 1 may be designed with different sizes depending on the requirements. After being assembled into the sleeve 2, if the length of the solenoid valve body is not long enough, the top of the limiting step 22 cannot abut against the end of the threaded ring 3. The compensation section 10 is constructed to compensate for the distance difference between the top of the limiting step 22 and the end of the threaded ring 3, ensuring that the top of the limiting step 22 abuts against the end of the threaded ring 3, thereby allowing the solenoid valve body 1 to be stably fixed in the sleeve 2, adapting to solenoid valve bodies of different sizes.

[0032] Although the threaded rings 3 involved in the different embodiments above have different structures, they are all integrally molded parts. The integral molding process can be carried out by mold forming or advanced manufacturing processes, which can achieve standardized and large-scale production, ensuring that the quality and performance of each product are stable and highly consistent.

[0033] To install the solenoid valve body 1 using an installation tool, first insert the solenoid valve body 1 into the sleeve 2 and twist it to the preset position for optimal connection with the power cord. Then, align the installation tool with the first groove 12 of the mounting section 6 of the threaded ring 3, and apply torque evenly and slowly to the installation tool, gradually screwing the threaded section 5 of the threaded ring 3 into the sleeve 2. To maintain the solenoid valve body 1 in its initial preset position during the rotation of the threaded ring 3, multiple second grooves 13 are also provided at the top of the solenoid valve body 1 to align with the installation tool. The groove direction of the second grooves 13 is the same as that of the first grooves 12. The installation tool also cooperates with the second grooves 13 to keep the solenoid valve body 1 in the preset position during the rotation of the threaded ring 3, preventing angular rotation with the rotation of the installation tool.

[0034] Figure 1 A vibration damper 100 incorporating the external damping valve device of this invention is shown. The vibration damper 100 can be a multi-tube vibration damper, such as a dual-tube vibration damper. The vibration damper 100 has an outer tube 4, which forms the outer surface of the vibration damper 100, particularly the housing. An inner tube 14 is arranged coaxially with the outer tube 4 within the outer tube 4. A compensation space 15 is formed between the outer tube 4 and the inner tube 14, and the compensation space 15 is preferably at least partially filled with hydraulic fluid. The compensation space 15 is preferably partially filled with gas.

[0035] A working piston 16, connected to piston rod 17, is arranged within inner tube 14 to enable it to move within inner tube 14, which is preferably configured as a guide for the working piston 16. The working piston 16 preferably has a valve device. The working piston 16 divides the internal space of inner tube 14 into a first working space 18 arranged on the piston rod side and a second working space 19 arranged away from piston rod 17.

[0036] The intermediate tube 20 is arranged coaxially with respect to the inner tube 14 and the outer tube 4 within the compensation space 15 between the inner tube 14 and the outer tube 4.

[0037] The intermediate tube 20, for example, has a flange region 21 for attaching an external damping valve device to the intermediate tube 20. The flange region 21 is constructed as a single piece with the intermediate tube 20 and preferably has a circular cross-section.

[0038] Explanation of reference numerals in the attached figures: Vibration damper-100, solenoid valve body-1, sleeve-2, threaded ring-3, outer tube-4, threaded section-5, mounting section-6, receiving part-7, receiving part-8, chamfer-9, compensation section-10, boss-11, first groove-12, second groove-13, inner tube-14, compensation space-15, working piston-16, piston rod-17, first working space-18, second working space-19, intermediate tube-20, flange area-21, limiting step-22.

[0039] The foregoing disclosure of embodiments of this disclosure has been presented for illustrative and explanatory purposes. It is not intended to be exhaustive or to limit this disclosure to the precise forms disclosed. Many variations and modifications of the embodiments described herein will be apparent to those skilled in the art based on the foregoing disclosure. Note that the above examples are not intended to be limiting. Additional embodiments of devices and apparatuses that may include many of the foregoing features are also contemplated. Other devices, apparatuses, features, and advantages of this disclosure will become more apparent to those skilled in the art upon study of the accompanying drawings and detailed description. It is intended that all such other devices, apparatuses, features, and advantages be included within the scope of protection of this invention.

Claims

1. An external damping valve device for a shock absorber (100), comprising a solenoid valve body (1), a sleeve (2), and a threaded ring (3), wherein One end of the sleeve (2) is connected to the side wall of the outer tube (4) of the shock absorber (100), and the other end of the sleeve (2) extends outward along the radial direction of the outer tube (4); The solenoid valve body (1) is fitted with a threaded ring (3) that mates with the sleeve (2); Its features are, The threaded ring (3) is located at least partially between the solenoid valve body (1) and the sleeve (2), and the solenoid valve body (1) is fixed inside the sleeve (2) by the threaded ring (3); the threaded ring (3) includes a threaded section (5) and an installation section (6), and the installation section (6) is uniformly provided with at least one first groove (12) along the circumference of the threaded ring (3).

2. The external damping valve device according to claim 1, characterized in that, The sleeve (2) includes a receiving part (7) and a receiving part (8). The inner wall of the receiving part (7) is provided with an internal thread, and the outer wall of the threaded section (5) of the threaded ring (3) is provided with an external thread that mates with the internal thread.

3. The external damping valve device according to claim 2, characterized in that, The external thread of the threaded ring (3) extends from the end of the threaded section (5) to the end of the mounting section (6). The ends of the threaded section (5) and the mounting section (6) are both located near the outer tube (4) in the axial direction. The end face of the threaded section (5) has a chamfer (9).

4. The external damping valve device according to claim 3, characterized in that, The threaded ring (3) further includes a compensation section (10). The mounting section (6), the threaded section (5) and the compensation section (10) are arranged sequentially along the axial direction of the threaded ring (3). The compensation section (10) is an annular structure extending along the axial direction of the threaded ring (3).

5. The external damping valve device according to claim 1, characterized in that, The mounting section (6) includes a plurality of first grooves (12) and the plurality of first grooves (12) are spaced apart, and a boss (11) is formed between two adjacent first grooves (12).

6. The external damping valve device according to claim 4, characterized in that, A limiting step (22) is also formed on the body (1) of the solenoid valve.

7. The external damping valve device according to claim 6, characterized in that, The end of the threaded section (5) abuts against the end of the limiting step (22).

8. The external damping valve device according to any one of claims 1-7, characterized in that, The threaded ring (3) is an integrally formed part.

9. The external damping valve device according to claim 1, characterized in that, The top of the solenoid valve body (1) is provided with a plurality of second grooves (13), and the groove direction of the second grooves (13) is the same as the groove direction of the first groove (12).

10. A shock absorber (100) for a vehicle, characterized in that, It includes: At least one external damping valve device according to any one of claims 1-9; The outer tube (4) and the inner tube (14) are coaxially disposed on the outer tube (4), wherein a compensation space (15) for accommodating hydraulic fluid is designed between the outer tube (4) and the inner tube (14). A working piston (16) connected to a piston rod (17) is disposed inside the inner tube (14) in a reciprocating manner, wherein the internal space of the inner tube (14) is divided into a first working space (18) and a second working space (19) by the working piston (16); and An intermediate tube (20) is disposed inside the compensation space (15), and the intermediate tube (20) is mounted on the inner tube (14). The intermediate tube (20) has a flange region (21) for attaching the external damping valve device to the intermediate tube (20).

Images