One-way valve and brake system

Abstract

The utility model relates to the technical field of vehicles, and discloses a one-way valve and a braking system, and the one-way valve comprises a base, a supporting seat, a valve core and an elastic piece. The base is provided with a first channel, the supporting seat is provided with a second channel, the base is connected with the supporting seat, the valve element and the elastic piece are located in the second channel, a sealing face is arranged on the inner wall of the second channel, and the peripheral face of the valve element can abut against the sealing face or be separated from the sealing face under the action of the elastic piece. Before the one-way valve is installed on a valve block of a braking system, the supporting seat and the base can be assembled into a whole, and the valve element and the elastic piece are both limited in the second channel. By means of the arrangement, when the one-way valve is assembled to the mounting hole of the valve block, the valve element and the elastic piece cannot move at will, the assembling difficulty is lowered, and the mounting precision of the one-way valve can be guaranteed. Due to the fact that the sealing face is arranged on the supporting seat, in the assembling process, press fit of the base and the installation hole cannot cause deformation of the sealing face, and the sealing performance of the one-way valve can be guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, in particular to a one-way valve and a braking system. Background Art

[0002] In the intelligent integrated braking system, the main function of the hydraulic circuit hydraulically controlled one-way valve is to realize pressure maintenance, pressure relief and fluid replenishment functions for the system when the system has relevant braking requests.

[0003] The existing common hydraulically controlled one-way valve usually adopts a split structure of an injection-molded valve core + a machined valve seat + a spring. The valve core and the spring are independently installed in the pre-installed hole. Therefore, during the opening and closing process of the one-way valve, the valve core is easily displaced, affecting the sealing reliability. In addition, the split structure has high requirements for assembly precision and is difficult to assemble. In addition, the sealing cone surface is usually processed on the valve seat. Therefore, the deformation caused during the riveting of the valve seat to the pre-installed hole will affect the sealing surface precision, resulting in the sealing between the valve core and the sealing surface being affected. At the same time, the riveting depth of the valve seat directly affects the working stroke of the valve core and the spring, and has high requirements for assembly. The assembly precision is difficult to guarantee, which affects the working reliability of the one-way valve.

[0004] Therefore, a one-way valve and a braking system are urgently needed to solve the above problems. Utility Model Content

[0005] Based on the above problems, the purpose of the present utility model is to provide a one-way valve and a braking system, which can reduce the difficulty of assembly and ensure the sealing performance of the one-way valve.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] On the one hand, a one-way valve is provided, including a base, a support seat, a valve core and an elastic member, the base having a first channel, the support seat having a second channel, the base being connected to the support seat, the valve core and the elastic member being both located in the second channel, and the valve core being close to the base relative to the elastic member, a sealing surface being provided on the inner wall of the second channel, and the outer peripheral surface of the valve core being able to abut against the sealing surface or be separated from the sealing surface under the action of the elastic member.

[0008] As a preferred embodiment of the one-way valve of the utility model, the second channel includes a first chamber and a second chamber connected to each other, a step structure is formed at the connection between the first chamber and the second chamber, the sealing surface is arranged on the step structure, the elastic member is located in the first chamber, and the valve core is located in the second chamber.

[0009] As a preferred solution of the one-way valve of the utility model, the valve core includes a spherical structure, the sealing surface includes an arcuate surface convexly arranged on the step structure, and the spherical surface of the spherical structure abuts against the arcuate surface.

[0010] As a preferred embodiment of the one-way valve of the utility model, the one-way valve also includes a pressure ring connected to the base, one end of the pressure ring extends into the first channel, and the pressure ring is axially movable relative to the base, and the pressure ring is used to press the base into the mounting hole of the valve block of the brake system.

[0011] As a preferred solution of the one-way valve of the utility model, the pressure ring includes a connected connecting section and a crimping section, a guide surface is provided at the connection between the connecting section and the crimping section, the connecting section is located in the first channel, and the guide surface is used to guide the crimping section to axially fit into the first channel.

[0012] As a preferred embodiment of the one-way valve of the utility model, the first channel includes a first hole section and a second hole section connected to each other, the first hole section is connected to the second channel, and the diameter of the first hole section is smaller than the radial dimension of the valve core, and the end of the pressure ring extends into the second hole section.

[0013] As a preferred solution of the one-way valve of the utility model, the base is provided with a first limiting structure, and the support seat is provided with a second limiting structure, and the first limiting structure is engaged with the second limiting structure.

[0014] As a preferred solution of the one-way valve of the utility model, the first limiting structure includes a groove arranged around the first channel, and the second limiting structure includes a flange arranged around the end of the support seat, and the flange is clamped in the groove.

[0015] As a preferred solution of the one-way valve of the utility model, the valve core is made of metal material.

[0016] On the other hand, a braking system is provided, comprising a valve block and the one-way valve as described above, wherein the valve block is provided with a mounting hole, a base and a support seat of the one-way valve are both located in the mounting hole, and the base is sealingly connected to the mounting hole.

[0017] The beneficial effects of the utility model are:

[0018] The one-way valve and brake system provided by the utility model can be assembled into one piece by the support seat and the base before the one-way valve is installed to the valve block of the brake system, so that the valve core and the elastic member are both limited in the second channel. With such an arrangement, when the one-way valve is assembled to the mounting hole of the valve block, the valve core and the elastic member will not be displaced at will, thereby avoiding the problem of assembly errors caused by assembling each component separately in the mounting hole, reducing the difficulty of assembly, and ensuring the installation accuracy of the one-way valve. In addition, since the sealing surface is arranged on the support seat, during the assembly of the one-way valve, the press fit of the base and the mounting hole will not cause deformation of the sealing surface, so that the valve core can be in good contact with the sealing surface, ensuring the sealing performance of the one-way valve, ensuring the normal braking of the brake system, and improving the driving safety of the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without paying any creative work.

[0020] Figure 1 It is a structural schematic diagram of a one-way valve provided in a specific embodiment of the utility model;

[0021] Figure 2 It is a cross-sectional view of a one-way valve provided in a specific embodiment of the utility model;

[0022] Figure 3 yes Figure 2 A first partial view of

[0023] Figure 4 yes Figure 2 Second partial view of .

[0024] In the figure:

[0025] 1. Base; 2. Support seat; 3. Valve core; 4. Elastic part; 5. Pressing ring;

[0026] 11. first channel; 12. card slot; 13. sealing structure;

[0027] 111, first hole section; 112, second hole section;

[0028] 21. second channel; 22. step structure; 23. flange; 24. flow hole;

[0029] 211, first cavity; 212, second cavity; 221, sealing surface;

[0030] 51. Connecting section; 52. Crimping section; 53. Guide surface. DETAILED DESCRIPTION

[0031] In order to make the technical problems solved by the utility model, the technical solutions adopted and the technical effects achieved clearer, the technical solutions of the embodiments of the utility model will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0032] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply 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 a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions.

[0033] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable 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 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 according to specific circumstances.

[0034] like Figure 1 and Figure 2 As shown, this embodiment provides a one-way valve, which can reduce the difficulty of assembly and ensure the sealing performance of the one-way valve. The one-way valve includes a base 1, a support seat 2, a valve core 3 and an elastic member 4.

[0035] Among them, see Figure 2 and Figure 3The base 1 has a first channel 11, the support seat 2 has a second channel 21, the base 1 is connected to the support seat 2, and the first channel 11 is selectively connected to the second channel 21, the valve core 3 and the elastic member 4 are both located in the second channel 21, and the valve core 3 is close to the base 1 relative to the elastic member 4, and the inner wall of the second channel 21 is provided with a sealing surface 221, and the outer peripheral surface of the valve core 3 can abut against the sealing surface 221 or be separated from the sealing surface 221 under the action of the elastic member 4, so as to disconnect or connect the first channel 11 and the second channel 21, thereby realizing the one-way conduction function of the one-way valve.

[0036] Specifically, when the pressure on the side of the first channel 11 is greater than the pressure on the side of the second channel 21, the valve core 3 overcomes the elastic force of the elastic member 4 under the action of the pressure difference and abuts against the sealing surface 221, so that the one-way valve is not conductive. When the pressure on the side of the first channel 11 is less than the pressure on the side of the second channel 21, the valve core 3 moves toward the base 1 under the elastic force of the elastic member 4 and separates from the sealing surface 221, so that the one-way valve is conductive.

[0037] like Figure 1 and Figure 2 As shown, before the one-way valve is installed on the valve block of the brake system, the support seat 2 and the base 1 can be assembled into one body, so that the valve core 3 and the elastic member 4 are both limited in the second channel 21. That is, the one-way valve as a whole is an integrated structure. With such a configuration, when the one-way valve is assembled to the mounting hole of the valve block, the valve core 3 and the elastic member 4 will not be displaced at will, thereby avoiding the problem of assembly error caused by assembling each component in the mounting hole separately, reducing the assembly difficulty, and ensuring the installation accuracy of the one-way valve. In addition, since the sealing surface 221 is arranged on the support seat 2, during the assembly of the one-way valve, the press fit of the base 1 and the mounting hole will not cause the sealing surface 221 to deform, so that the valve core 3 can be in good contact with the sealing surface 221, ensuring the sealing performance of the one-way valve, ensuring the normal braking of the brake system, and improving the driving safety of the vehicle.

[0038] Optionally, see Figure 2 and Figure 4 The second channel 21 includes a first cavity 211 and a second cavity 212 connected to each other. The connection between the first cavity 211 and the second cavity 212 forms a step structure 22. The sealing surface 221 is arranged on the step structure 22. The elastic member 4 is located in the first cavity 211, and the valve core 3 is located in the second cavity 212. The first cavity 211 can limit the installation position of the elastic member 4 so that the elastic member 4 can only move in the axial direction. The second cavity 212 can limit the installation position of the valve core 3 so that the valve core 3 can only move in the second cavity 212, which reduces the difficulty of assembly and ensures the sealing reliability of the valve core 3 and the sealing surface 221.

[0039] In this embodiment, the radial dimension of the first cavity 211 is smaller than the radial dimension of the second cavity 212, so as to form a step structure 22 at the connection between the first cavity 211 and the second cavity 212. The radial dimension of the first cavity 211 is slightly larger than the radial dimension of the elastic member 4, so as to ensure that the elastic member 4 can freely expand and contract in the first cavity 211. The radial dimension of the valve core 3 is larger than the radial dimension of the first cavity 211, and smaller than the radial dimension of the second cavity 212, so that the valve core 3 can only move in the second cavity 212. Exemplarily, the elastic member 4 is a spring.

[0040] Further, see Figure 1 A connecting hole connected to the second cavity 212 is provided on the support seat 2. When the valve core 3 is separated from the sealing surface 221, the connecting hole can be connected to other channels in the valve block to realize liquid circulation.

[0041] Optionally, see Figure 1 and Figure 2 The valve core 3 includes a spherical structure, and the sealing surface 221 includes an arcuate surface protruding from the step structure 22, and the spherical surface of the spherical structure abuts against the arcuate surface. Compared with the contact between the spherical surface and the conical surface in the prior art, the prior art is point contact, with a small contact area and poor sealing performance. In this embodiment, the contact area is larger through the direct contact between the spherical surface and the arcuate surface, and a linear hard seal can be formed between the spherical surface and the arcuate surface, which effectively improves the sealing performance of the one-way valve.

[0042] Optionally, the valve core 3 is made of a metal material. The metal material has sufficient structural strength, can prevent the valve core 3 from deforming, and ensure that the outer peripheral surface of the valve core 3 is in good contact with the sealing surface 221. Exemplarily, the metal material is steel, and the valve core 3 is a steel ball. The steel ball has high sealing accuracy and long service life. At the same time, it is easier to ensure the consistency of the outer peripheral surface profile of the steel ball during processing, and the processing cost is lower.

[0043] Optionally, see Figure 1 , Figure 2 and Figure 3 The one-way valve also includes a pressure ring 5 connected to the base 1, one end of the pressure ring 5 extends into the first channel 11, and the pressure ring 5 can move axially relative to the base 1. The pressure ring 5 is used to press the base 1 into the mounting hole of the valve block of the brake system. Before the one-way valve is assembled to the mounting hole, the pressure ring 5 is connected and assembled with the base 1 as a whole. During the specific assembly, the one-way valve is inserted into the mounting hole as a whole, and then the pressure ring 5 is pressed axially downward using a press-fitting tool to move the pressure ring 5 into the first channel 11, thereby pressing the base 1 against the hole wall of the mounting hole to achieve a firm fixation of the one-way valve and the mounting hole. During the press-fitting process, the support seat 2 will not be deformed by pressure, thereby not affecting the shape of the sealing surface 221, thereby ensuring that the sealing performance of the valve core 3 and the sealing surface 221 is not affected.

[0044] Optionally, see Figure 1, the outer circumferential surface of the base 1 is provided with a sealing structure 13, and the sealing structure 13 is sealed with the mounting hole. By providing the sealing structure 13, when the base 1 is press-fitted with the mounting hole, it can ensure that the outer wall of the base 1 and the hole wall of the mounting hole are well sealed to prevent leakage. Exemplarily, the sealing structure 13 is an annular protrusion arranged on the outer circumferential surface of the base 1, and a plurality of annular protrusions are arranged on the base 1 at intervals along the axial direction. During the press-fitting process, the annular protrusions are more easily deformed to make the outer wall of the base 1 abut against the hole wall of the mounting hole, thereby ensuring the sealing effect.

[0045] Optionally, see Figure 2 and Figure 3 The pressure ring 5 includes a connecting section 51 and a crimping section 52 connected to each other. A guide surface 53 is provided at the connection between the connecting section 51 and the crimping section 52. The connecting section 51 is located in the first channel 11. The guide surface 53 is used to guide the crimping section 52 to axially snap into the first channel 11. In this embodiment, the outer diameter of the connecting section 51 is smaller than the outer diameter of the crimping section 52, so that the connecting section 51 of the pressure ring 5 can penetrate into the first channel 11 of the base 1. When the pressure ring 5 is pressed, the guide surface 53 can play a guiding role, so that the pressure ring 5 is more easily snapped into the first channel 11 of the base 1 along the axial direction, thereby improving the assembly efficiency of the one-way valve.

[0046] Optionally, see Figure 2 and Figure 3 The first channel 11 includes a first hole section 111 and a second hole section 112 connected to each other. The first hole section 111 is connected to the second channel 21, and the diameter of the first hole section 111 is smaller than the radial dimension of the valve core 3. The end of the pressure ring 5 extends into the second hole section 112. The diameter of the first hole section 111 is designed to be smaller than the radial dimension of the valve core 3, so that the valve core 3 is limited in the second cavity 212 of the second channel 21 after the base 1 and the support seat 2 are assembled, which can prevent the valve core 3 from detaching from the support seat 2 and reduce the difficulty of assembly. The pressure ring 5 presses and expands the upper end of the second hole section 112 to press the base 1 into the mounting hole, so that the first hole section 111 will not deform, thereby not causing the support seat 2 to deform, and ensuring the sealing accuracy of the sealing surface 221.

[0047] Optionally, the base 1 is provided with a first limiting structure, and the support seat 2 is provided with a second limiting structure, and the second limiting structure is clamped to the first limiting structure. The clamping of the first limiting structure and the second limiting structure can ensure that the base 1 and the support seat 2 are firmly connected, so that the one-way valve forms an integrated structure.

[0048] Optionally, see Figure 2The first limiting structure includes a slot 12 arranged around the first channel 11, and the second limiting structure includes a flange 23 arranged around the end of the support seat 2, and the flange 23 is clamped in the slot 12. During assembly, the flange 23 is pressed into the lower end of the first hole section 111 of the first channel 11 by press fitting until the flange 23 is clamped in the slot 12, which is simple to assemble and has a reliable connection.

[0049] Further, see Figure 1 The support seat 2 is provided with a flow hole 24 connected with the second channel 21. When the valve core 3 is separated from the sealing surface 22, the liquid entering the mounting hole of the valve body can flow from the second channel 21 to the first channel 11. At the same time, the liquid between the outer wall of the support seat 2 and the wall of the mounting hole can enter the second cavity 212 of the second channel 21 through the flow hole 24, and then flow into the first channel 11. That is, the flow hole 24 can play a diversion role, so that the liquid flows more smoothly when the one-way valve is turned on.

[0050] The present embodiment also provides a braking system, including a valve block and a one-way valve as described above, wherein the valve block is provided with a mounting hole, wherein the base 1 and the support seat 2 of the one-way valve are both located in the mounting hole, and the base 1 is sealed and connected to the mounting hole. By designing the one-way valve to be assembled into an integral structure, the problem of assembly error caused by assembling each component separately in the mounting hole is avoided, thereby reducing the difficulty of assembly. By providing the support seat 2, the positions of the elastic member 4 and the valve core 3 can be fixed to ensure assembly accuracy. The sealing surface 221 is provided in the support seat 2, and the pressure ring 5 is used to press into the base 1 to fix the base 1 to the mounting hole, which will not affect the sealing performance between the valve core 3 and the sealing surface 221, thereby ensuring the sealing performance of the one-way valve, ensuring the normal braking of the braking system, and improving the driving safety of the vehicle.

[0051] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention is described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. One-way valve, characterized in that: The invention comprises a base (1), a support seat (2), a valve core (3) and an elastic member (4); the base (1) has a first channel (11), the support seat (2) has a second channel (21), the base (1) is connected to the support seat (2), the valve core (3) and the elastic member (4) are both located in the second channel (21), and the valve core (3) is closer to the base (1) relative to the elastic member (4); a sealing surface (221) is provided on the inner wall of the second channel (21), and the outer peripheral surface of the valve core (3) can abut against the sealing surface (221) or be separated from the sealing surface (221) under the action of the elastic member (4).

2. The one-way valve according to claim 1, characterized in that: The second channel (21) comprises a first chamber (211) and a second chamber (212) which are connected to each other, a step structure (22) is formed at the connection between the first chamber (211) and the second chamber (212), the sealing surface (221) is arranged on the step structure (22), the elastic member (4) is located in the first chamber (211), and the valve core (3) is located in the second chamber (212).

3. The one-way valve according to claim 2, characterized in that: The valve core (3) comprises a spherical structure, the sealing surface (221) comprises an arcuate surface protruding from the step structure (22), and the spherical surface of the spherical structure abuts against the arcuate surface.

4. The one-way valve according to claim 1, characterized in that: The one-way valve also includes a pressure ring (5) connected to the base (1), one end of the pressure ring (5) extends into the first channel (11), and the pressure ring (5) is axially movable relative to the base (1), and the pressure ring (5) is used to press the base (1) into the mounting hole of the valve block of the brake system.

5. The one-way valve according to claim 4, characterized in that: The pressure ring (5) comprises a connected connecting section (51) and a crimping section (52); a guide surface (53) is provided at the connection between the connecting section (51) and the crimping section (52); the connecting section (51) is located in the first channel (11); and the guide surface (53) is used to guide the crimping section (52) to be inserted into the first channel (11) along the axial direction.

6. The one-way valve according to claim 4, characterized in that: The first channel (11) comprises a first hole section (111) and a second hole section (112) which are connected to each other. The first hole section (111) is connected to the second channel (21). The diameter of the first hole section (111) is smaller than the radial dimension of the valve core (3). The end of the pressure ring (5) extends into the second hole section (112).

7. The one-way valve according to claim 1, characterized in that: The base (1) is provided with a first limiting structure, and the support seat (2) is provided with a second limiting structure, and the first limiting structure is engaged with the second limiting structure.

8. The one-way valve according to claim 7, characterized in that: The first limiting structure comprises a slot (12) arranged around the first channel (11), and the second limiting structure comprises a flange (23) arranged around the end of the support seat (2), and the flange (23) is clamped in the slot (12).

9. The one-way valve according to any one of claims 1 to 8, characterized in that: The valve core (3) is made of metal material.

10. A braking system, characterized in that: It comprises a valve block and a one-way valve as claimed in any one of claims 1 to 9, wherein the valve block is provided with a mounting hole, a base (1) and a support seat (2) of the one-way valve are both located in the mounting hole, and the base (1) is sealedly connected to the mounting hole.

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