Valve arrangement for a vehicle

Abstract

The application provides a valve device for a vehicle, comprising an inner valve piece, an outer housing piece, a spring seat arranged between the inner valve piece and the outer housing piece in a radial direction of the valve device, and a spring supported by the spring seat in an axial direction of the valve device and by the inner valve piece, wherein: the spring seat comprises a skeleton and an elastic sealing body covering the skeleton; an inner peripheral wall of the spring seat is provided with at least one first sealing part in sealing cooperation with the inner valve piece, and an outer peripheral wall of the spring seat is provided with at least one second sealing part in sealing cooperation with the outer housing piece, and the first sealing part and the second sealing part are integral parts of the elastic sealing body. In the spring seat of the application, the elastic sealing body covers the skeleton to form an integral structure, so that the risk of cracking can be avoided; the sealing parts are integrally formed with the elastic sealing body, so that the supporting function and the sealing function of the spring seat are further ensured, and the safety and reliability of the valve device are effectively improved.

Description

Technical Field

[0001] This application relates to the field of automotive parts technology, and more specifically, to valve devices for vehicles. Background Technology

[0002] The spring seat plays a crucial role in the valve assembly. Its sealing connection between the inner valve component and the outer shell provides support for the spring, which is key to controlling the opening and closing of the inner valve component. On the other hand, it seals the gas inside the cavity containing the inner valve component, preventing gas leakage from affecting the braking function.

[0003] Because the outer and inner circumferential surfaces of the spring seat need to seal with the outer casing and inner valve components respectively, annular grooves need to be formed on both surfaces to accommodate the sealing rings. To facilitate demolding, the spring seat is currently divided into two halves, which are injection molded separately and then welded together. However, due to factors such as poor welding, the two halves have an extremely high risk of cracking.

[0004] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this application, and therefore may include information that does not constitute prior art known to those skilled in the art. Utility Model Content

[0005] This application provides a valve device for vehicles that can avoid the risk of spring seat cracking, ensure the supporting and sealing functions of the spring seat, and thus ensure the effectiveness and safety of the valve device.

[0006] According to one aspect of this application, a valve device is provided, comprising an inner valve member, a outer shell member, a spring seat disposed between the inner valve member and the outer shell member in the radial direction of the valve device, and a spring supported on one side by the spring seat and on the other side by the inner valve member in the axial direction of the valve device, wherein: the spring seat is a single piece and includes a skeleton and an elastic sealing body covering the skeleton; the inner peripheral wall of the spring seat is provided with at least one first sealing portion, the at least one first sealing portion sealingly engaging with the inner valve member; the outer peripheral wall of the spring seat is provided with at least one second sealing portion, the at least one second sealing portion sealingly engaging with the outer shell member; the at least one first sealing portion and the at least one second sealing portion are integral components of the elastic sealing body.

[0007] In some embodiments, the at least one first sealing portion includes a plurality of first sealing protrusions spaced apart in the axial direction of the valve device, and / or, the at least one second sealing portion includes a plurality of second sealing protrusions spaced apart in the axial direction of the valve device.

[0008] In some embodiments, the cross-section of the first sealing protrusion is arc-shaped, and / or the cross-section of the second sealing protrusion is arc-shaped.

[0009] In some embodiments, the skeleton is formed as a single piece.

[0010] In some embodiments, the resilient seal completely covers the skeleton, and the resilient seal forms the outer contour of the spring seat.

[0011] In some embodiments, the skeleton is made of plastic, the elastic seal is made of rubber, and the elastic seal is wrapped around the skeleton.

[0012] In some embodiments, the outer surface of the skeleton is provided with a protruding structure and / or a recessed structure that cooperates with the elastic seal.

[0013] In some embodiments, the cross-section of the skeleton is formed in a cross shape.

[0014] In some embodiments, the spring support surface of the spring seat is provided with a limiting guide shoulder, the inner side of which cooperates with the inner valve and the outer side of which cooperates with the spring.

[0015] In some embodiments, a limiting boss is provided at the outer end edge of the spring seat, and the limiting boss cooperates with the end edge of the housing.

[0016] In some embodiments, the valve device further includes a piston, the inner tube portion of the piston cooperating with the inner valve member, the shoulder portion of the piston cooperating with the outer casing member and supporting the spring seat, and the limiting boss of the spring seat being positioned in the axial direction of the valve device between the end edge of the outer casing member and the shoulder portion of the piston, wherein the inner valve member is slidably fitted onto the inner tube portion, and the shoulder portion surrounds the inner tube portion.

[0017] In some embodiments, the spring seat is formed as an annular closed structure, and the skeleton, the elastic sealing body, the first sealing part and the second sealing part are all annular closed structures.

[0018] In some embodiments, the valve device is a valve device for a pneumatic system of a vehicle.

[0019] In some embodiments, the valve device is a foot brake valve.

[0020] The beneficial effects of this application compared to the prior art include at least the following:

[0021] In this application, the spring seat employs an elastic sealing body that encapsulates the skeleton to form an integrated structure. This avoids the cracking risk associated with separate welding in existing technologies, ensuring the supporting and sealing functions of the spring seat. The skeleton provides structural strength and rigidity, ensuring sufficient support for the spring. The elastic sealing body is firmly integrated with the skeleton by encapsulating it, eliminating the potential cracking issues caused by poor welding and stress concentration in existing technologies. The elastic sealing body itself possesses excellent elasticity and sealing performance, and its inner and outer peripheral walls are integrally formed into a first sealing part and a second sealing part, respectively, achieving close contact with the inner valve and outer shell components to ensure sufficient sealing effect. The integrated structure further ensures a stable sealing effect.

[0022] The valve device for vehicles described in this application utilizes a spring seat with an integrated structure, which can effectively improve safety and reliability and achieve stable braking performance.

[0023] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0024] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. It is obvious that the drawings described below are merely some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.

[0025] Figure 1 This diagram shows a partial cross-sectional view of a valve device for a vehicle according to an embodiment of this application.

[0026] Figure 2 This diagram shows a cross-sectional view of the spring seat of the valve device in an embodiment of this application. Detailed Implementation

[0027] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to make this application more comprehensive and complete, and to fully convey the concept of the exemplary embodiments to those skilled in the art.

[0028] The accompanying drawings are merely illustrative of this application and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar structures, and therefore, repeated descriptions of them will be omitted.

[0029] The terms "first," "second," and similar words used in the specific description do not indicate any order, quantity, or importance, but are merely used to distinguish different components. The terms "upper," "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. The term "multiple" means two or more, unless otherwise explicitly specified. Furthermore, in the description of this application, unless otherwise explicitly specified and limited, the term "connection" should be interpreted broadly, 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 an indirect connection through an intermediate medium, or it can be a connection within two elements.

[0030] It should be noted that, unless otherwise specified, the embodiments of this application and the features in different embodiments can be combined with each other.

[0031] Figure 1 The diagram illustrates a partial cross-sectional view of a valve device for a vehicle according to an embodiment of this application. Figure 2 The diagram illustrates the cross-sectional structure of the spring seat of the valve device in an embodiment of this application; combined with Figure 1 and Figure 2 As shown, the valve device for a vehicle provided in this application embodiment may include an inner valve 100, a housing 200, a spring seat 300 disposed between the inner valve 100 and the housing 200 in the radial direction X of the valve device, and a spring 400 supported on one side by the spring seat 300 and on the other side by the inner valve 100 in the axial direction Z of the valve device, wherein:

[0032] The spring seat 300 is constructed as a single piece and includes a frame 310 and an elastic seal 320 covering the frame 310.

[0033] The inner peripheral wall of the spring seat 300 is provided with at least one first sealing part 321, which is in sealing cooperation with the inner valve member 100. The outer peripheral wall of the spring seat 300 is provided with at least one second sealing part 322, which is in sealing cooperation with the outer shell member 200. The at least one first sealing part 321 and the at least one second sealing part 322 are integral components of the elastic sealing body 320.

[0034] The spring seat 300 of this application adopts an elastic sealing body 320 to cover the skeleton 310 to form an integral structure, which can avoid the cracking risk caused by separate welding in the prior art, and ensure the supporting and sealing functions of the spring seat 300. It should be noted that the spring seat 300 is "single-piece construction" means that the spring seat 300 is formed by the elastic sealing body 320 covering the skeleton 310 to form an integral structure, thereby avoiding the cracking risk caused by separate connection. The skeleton 310 provides structural strength and rigidity, ensuring sufficient support for the spring 400. The elastic seal 320 is firmly bonded to the skeleton 310 by covering it, eliminating the risk of cracking caused by poor welding and stress concentration in the prior art. The elastic seal 320 itself has good elasticity and sealing performance, and the inner and outer peripheral walls of the elastic seal 320 are integrally formed into the first sealing part 321 and the second sealing part 322, respectively, to achieve close contact with the inner valve 100 and the outer shell 200, ensuring sufficient sealing effect, and the integral structure ensures a stable sealing effect.

[0035] The valve device of this application utilizes an integrated spring seat 300, which effectively improves safety and reliability, achieving stable braking performance. One possible operating mode of the valve device is as follows: when an external force is applied to the inner valve 100, the inner valve 100 is pressed down, the cavity 100' is opened, and gas can be transported to the rear end through the opened cavity 100'; when the external force disappears, the spring 400 pushes the inner valve 100 back to its original position, causing the inner valve 100 to seal against the outer shell 200, thereby cutting off the cavity 100'. During the movement of the inner valve 100, the spring seat 300 always maintains a sealed fit with the inner valve 100 and the outer shell 200, preventing gas leakage.

[0036] In some embodiments, at least one first sealing portion 321 includes a plurality of first sealing protrusions spaced apart in the axial direction Z of the valve device. In some embodiments, at least one second sealing portion 322 includes a plurality of second sealing protrusions spaced apart in the axial direction Z of the valve device. The multiple first sealing protrusions and multiple second sealing protrusions form a redundant sealing barrier, each of which can independently perform a sealing function. Even if one sealing protrusion is damaged due to wear, foreign matter, etc., the other sealing protrusions can still effectively perform a sealing function, thereby greatly improving the reliability of the sealing fit between the spring seat 300 and the inner valve component 100 / outer shell component 200.

[0037] In some embodiments, the cross-section of the first sealing protrusion is arc-shaped. In some embodiments, the cross-section of the second sealing protrusion is arc-shaped. Utilizing the arc-shaped surfaces of the first / second sealing protrusions achieves smooth contact with the inner valve component 100 / outer housing component 200, reducing the risk of friction and scratches. Furthermore, the arc-shaped surfaces generate more uniform contact stress, improving the sealing effect.

[0038] Depending on the different sealing requirements between the spring seat 300 and the inner valve component 100 / outer shell component 200, the specific number, cross-sectional shape, and size of the first / second sealing protrusions can be set as needed. For example, the first / second sealing protrusions can also be formed into a sealing lip-like structure. Furthermore, among multiple first / second sealing protrusions, at least two of them can have different protrusion sizes, with the larger protrusion playing a primary sealing role and the smaller protrusion playing a secondary sealing role.

[0039] In some embodiments, the skeleton 310 is formed as a single-piece structure, ensuring that the overall structure of the skeleton 310 has no weak connection points or internal stress, thereby improving structural strength. Furthermore, the elastic sealing body 320, the first sealing portion 321, and the second sealing portion 322 are also formed as a single-piece structure, making the elastic sealing body 320 and the sealing portions of its inner and outer peripheral walls an integral structure. This avoids the possibility of leakage or separation during assembly between parts, simplifies the process flow and reduces the number of parts, improving production efficiency and product integrity.

[0040] In some embodiments, the frame 310 is injection molded from plastic in a single step to create a rigid structure with a specific shape and precise dimensions; the elastic seal 320 is encapsulated in rubber on the outside of the frame 310 to achieve a tight bond with the frame 310. Thus, through a two-step molding process of injection molding of the frame 310 and encapsulation of the elastic seal 320, a spring seat 300 with extremely high structural strength can be efficiently formed.

[0041] In other embodiments, the specific materials and manufacturing processes of the skeleton 310 and the elastic sealing body 320 can be adjusted as needed. For example, the skeleton 310 can also be made of materials such as metal, as long as it can achieve high structural strength, good stability, and good bonding ability with the elastic sealing body 320. The elastic sealing body 320 can also be made of materials such as thermoplastic elastomers, as long as it can achieve good elasticity and sealing performance, strong wear resistance, and good bonding ability with the skeleton 310. The skeleton 310 and the elastic sealing body 320 can also be firmly bonded together by methods such as vulcanization.

[0042] In some embodiments, the elastic seal 320 completely covers the frame 310, forming the outer contour of the spring seat 300. This achieves the tightest possible connection between the elastic seal 320 and the frame 310, giving the spring seat 300 extremely high structural strength; furthermore, the elastic seal 320 protects the frame 310 from scratches and impacts. In other embodiments, depending on actual needs, the frame 310 may also partially expose the elastic seal 320.

[0043] In some embodiments, the outer surface of the skeleton 310 is provided with a protruding structure and / or a recessed structure that cooperates with the elastic sealing body 320, which can increase the contact area between the skeleton 310 and the elastic sealing body 320 and improve the bonding strength, forming a stable interlocking structure, effectively preventing the elastic sealing body 320 from shifting or separating from the skeleton 310 after long-term use.

[0044] In some embodiments, the cross-section of the skeleton 310 is formed in a cross shape. The four arms 310' of the cross shape can form radial and axial reinforcing ribs to enhance the rigidity of the skeleton 310, and locking grooves are formed between adjacent arms 310' to facilitate the fitting of the elastic seal 320 and effectively improve the bonding strength with the elastic seal 320. In other embodiments, the skeleton 310 can also be formed in a star shape, a cross shape, or other shapes, or some slotted structures can be formed on the surface of the skeleton 310.

[0045] In some embodiments, the spring support surface of the spring seat 300 is provided with a limiting guide shoulder 330. The inner surface 330a of the limiting guide shoulder 330 cooperates with the inner valve member 100 and guides the movement of the inner valve member 100. The outer surface 330b of the limiting guide shoulder 330 cooperates with the spring 400 and provides positioning for the end of the spring 400, preventing the spring 400 from slipping during compression and rebound.

[0046] In some embodiments, a limiting boss 340 is provided at the outer end edge of the spring seat 300. The limiting boss 340 cooperates with the end edge of the outer shell 200 to limit the spring seat 300.

[0047] In some embodiments, the valve device further includes a piston 500. The inner tube portion 510 of the piston 500 cooperates with the inner valve component 100, and the shoulder portion 520 of the piston 500 cooperates with the outer casing 200 and supports the spring seat 300. The limiting boss 340 of the spring seat 300 is positioned between the end edge of the outer casing 200 and the shoulder portion 520 of the piston 500 in the axial direction Z of the valve device, which can effectively prevent the spring seat 300 from falling off, ensure the stability of the working state of the spring seat 300, and thus ensure the reliability of the valve device. The inner valve component 100 is slidably fitted onto the inner tube portion 510, and the shoulder portion 520 is arranged around the inner tube portion 510.

[0048] In some embodiments, the spring seat 300 is formed as an annular closed structure to adapt to the structural features of the tubular inner valve member 100. The annular spring seat 300 is fitted onto the inner valve member 100 and housed within the outer casing 200. When the spring seat 300 is formed as an annular closed structure, the skeleton 310, the elastic sealing body 320, the first sealing part 321, and the second sealing part 322 are all annular closed structures.

[0049] In other embodiments, the spring seat 300 may also adopt other shapes and structures according to actual needs. For example, considering factors such as meeting special functions and adapting to non-circular cavities, the spring seat 300 may also be formed into other suitable shapes such as C-shape or ellipse.

[0050] In some embodiments, the valve device is a valve device for a pneumatic system of a vehicle. Of course, this is not a limitation; the valve device can also be used in other systems of a vehicle, such as hydraulic systems.

[0051] In some embodiments, the valve device is a foot brake valve. The foot brake valve, employing the aforementioned spring seat 300, achieves excellent sealing, reliability, and durability. Of course, the valve device of this application is not limited to a foot brake valve; it can also be a hand brake valve, relay valve, differential valve, or any pneumatic or hydraulic valve product that requires a similar spring seat.

[0052] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of this application and should not be construed as limiting the specific implementation of this application to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of this application, and all such modifications or substitutions should be considered within the scope of protection of this application.

Claims

1. A valve device for a vehicle, comprising an inner valve member (100), a housing member (200), a spring seat (300) disposed radially between the inner valve member (100) and the housing member (200) of the valve device, and a spring (400) supported on one side by the spring seat (300) and on the other side by the inner valve member (100) in the axial direction of the valve device, characterized in that, The spring seat (300) is constructed as a single piece and includes a frame (310) and an elastic sealing body (320) covering the frame (310); The inner peripheral wall of the spring seat (300) is provided with at least one first sealing part (321), which is in sealing cooperation with the inner valve member (100). The outer peripheral wall of the spring seat (300) is provided with at least one second sealing part (322), which is in sealing cooperation with the outer shell member (200). The at least one first sealing part (321) and the at least one second sealing part (322) are integral components of the elastic sealing body (320).

2. The valve arrangement for a vehicle as set forth in claim 1, characterized in that The at least one first sealing portion (321) includes a plurality of first sealing protrusions spaced apart in the axial direction of the valve device, and / or the at least one second sealing portion (322) includes a plurality of second sealing protrusions spaced apart in the axial direction of the valve device.

3. The valve arrangement for a vehicle as set forth in claim 1, characterized in that The skeleton (310) is formed as an integral structure.

4. The valve apparatus for a vehicle according to claim 1, characterized by, The elastic seal (320) completely covers the skeleton (310), and the elastic seal (320) forms the outer contour of the spring seat (300).

5. The valve apparatus for a vehicle according to claim 1, characterized by, The skeleton (310) is made of plastic, the elastic seal (320) is made of rubber, and the elastic seal (320) is wrapped around the skeleton (310).

6. The valve apparatus for a vehicle according to claim 1, characterized by, The outer surface of the skeleton (310) is provided with a protruding structure and / or a recessed structure that cooperates with the elastic sealing body (320).

7. The valve arrangement for a vehicle as set forth in claim 6, characterized in that The cross-section of the skeleton (310) is formed in a cross shape.

8. The valve apparatus for a vehicle according to claim 1, characterized by, The spring support surface of the spring seat (300) is provided with a limiting guide shoulder (330), the inner side (330a) of the limiting guide shoulder (330) cooperates with the inner valve (100) and the outer side (330b) cooperates with the spring (400).

9. The valve apparatus for a vehicle according to claim 1, characterized by, The outer end edge of the spring seat (300) is provided with a limiting boss (340), which engages with the end edge of the outer shell (200).

10. The valve arrangement for a vehicle as set forth in claim 9, characterized in that The valve device further includes a piston (500), the inner tube portion (510) of the piston (500) cooperating with the inner valve member (100), the shoulder portion (520) of the piston (500) cooperating with the outer shell member (200) and supporting the spring seat (300), the limiting boss (340) of the spring seat (300) being positioned in the axial direction of the valve device between the end edge of the outer shell member (200) and the shoulder portion (520) of the piston (500), wherein the inner valve member (100) is slidably fitted on the inner tube portion (510), and the shoulder portion (520) surrounds the inner tube portion (510).

11. The valve arrangement for a vehicle as set forth in claim 1, characterized in that The spring seat (300) is formed as an annular closed structure, wherein the skeleton (310), the elastic sealing body (320), the first sealing part (321) and the second sealing part (322) are all annular closed structures.

12. The valve arrangement for a vehicle as claimed in any one of claims 1 to 11, characterized in that The valve device is a valve device used in the pneumatic system of a vehicle.

13. The valve arrangement for a vehicle as set forth in claim 12, characterized in that The valve device is a foot brake valve.

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