Pressure reducing valve of vehicle fuel cell system and vehicle with pressure reducing valve

Abstract

The utility model discloses a pressure reducing valve of a vehicle fuel cell system and a vehicle provided with the pressure reducing valve. The pressure reducing valve of the vehicle fuel cell system comprises a valve body and a pressure reducing valve, the end cover is installed on the valve body, the end cover and the valve body jointly define a valve cavity, and a positioning groove is formed in the end cover; the valve core is arranged in the valve cavity in an axial moving manner; the elastic piece is connected with the valve element and the end cover, and at least one part of the elastic piece is arranged in the positioning groove in a matched mode. According to the embodiment of the utility model, the pressure reducing valve of the vehicle fuel cell system has the advantages of few parts, high production efficiency, strong reliability, low cost, small size and the like.

Description

TECHNICAL FIELD

[0001] The utility model relates to vehicle engineering technical field, specifically, relate to a kind of pressure reducing valve of vehicle fuel cell system and the vehicle with the pressure reducing valve of vehicle fuel cell system of described. BACKGROUND

[0002] The pressure reducing valve of vehicle fuel cell system in the related art, in order to realize the positioning and assembly of each structure, structure is more complex, the number of parts is more, on the one hand, it leads to high assembly difficulty, low assembly efficiency, affects finished product reliability and yield, increases production cost, on the other hand, it leads to large overall axial dimension, is inconvenient to install in smaller space. SUMMARY

[0003] The utility model at least solves one of the technical problems existing in the prior art. To this end, the utility model provides a pressure reducing valve of vehicle fuel cell system, which has the advantages of fewer parts, high production efficiency, high reliability, low cost and small size.

[0004] The utility model further provides a vehicle with the pressure reducing valve of vehicle fuel cell system.

[0005] To achieve the above-mentioned purpose, according to the first aspect of the embodiment of the utility model, a pressure reducing valve of vehicle fuel cell system is provided, which comprises: a valve body; an end cover installed on the valve body and defining a valve cavity together with the valve body, the end cover being provided with a positioning groove; a valve core movably arranged in the valve cavity; and an elastic member connected to the valve core and the end cover and at least partially fitted in the positioning groove.

[0006] The pressure reducing valve of vehicle fuel cell system according to the utility model has the advantages of fewer parts, high production efficiency, high reliability, low cost and small size.

[0007] In addition, the pressure reducing valve of vehicle fuel cell system according to the above-mentioned embodiment of the utility model can also have the following additional technical features:

[0008] According to one embodiment of the utility model, the elastic member is a spring, the positioning groove is an annular groove, and one end of the elastic member is fitted in the positioning groove.

[0009] According to one embodiment of the utility model, the end cover is provided with a positioning hole, a part of the valve core is movably fitted in the positioning hole, and a separation part is provided between the positioning hole and the positioning groove.

[0010] According to one embodiment of the present application, the axial height of the isolation part is 10-15mm, and the axial height of the radial outer wall of the positioning groove is 5-10mm.

[0011] According to one embodiment of the present application, the pressure reducing valve of the vehicle fuel cell system further comprises a positioning member, an outer periphery of the positioning member is provided with external threads, the valve body is provided with internal threads, the internal threads are threadedly matched with the external threads, the end cover is radially matched in the valve body, the positioning member axially stops the end cover to prevent the end cover from being separated from the valve body, and the positioning member is provided with a through hole, and the end cover is radially matched in the through hole.

[0012] According to one embodiment of the present application, an end surface of the positioning member is provided with a tool groove adapted to be matched with a rotating tool.

[0013] According to one embodiment of the present application, the end cover is provided with a valve hole, the valve core is movably arranged in the valve cavity between an open position and a closed position, the valve core opens the valve hole in the open position and closes the valve hole in the closed position, and the elastic member is adapted to drive the valve core to move to the open position.

[0014] According to one embodiment of the present application, the valve body has a valve core stop table, an outer periphery of the valve core is provided with a stop rib, the stop rib and the valve core stop table are in abutment when the valve core is in the open position, and the elastic member is in abutment with the stop rib.

[0015] According to one embodiment of the present application, the valve core is provided with a flow channel, the flow channel is in communication with the valve hole when the valve core is in the open position, and the flow channel is disconnected with the valve hole when the valve core is in the closed position.

[0016] According to one embodiment of the second aspect of the present application, a vehicle is provided, which comprises the pressure reducing valve of the vehicle fuel cell system according to one embodiment of the first aspect of the present application.

[0017] According to the vehicle of the present application, by using the pressure reducing valve of the vehicle fuel cell system according to one embodiment of the first aspect of the present application, the vehicle has the advantages of less parts, high production efficiency, strong reliability, low cost, small size and the like.

[0018] Additional aspects and advantages of the present application will be given in part in the following description, will become apparent from the following description, or will be learned by practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0019] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0020] Figure 1 This is a cross-sectional view of the pressure reducing valve of a vehicle fuel cell system according to an embodiment of the present invention.

[0021] Figure 2 This is a cross-sectional view of the end cap of the pressure reducing valve of the vehicle fuel cell system according to an embodiment of the present invention.

[0022] Figure 3 This is a partial structural schematic diagram of the end cap of the pressure reducing valve of a vehicle fuel cell system according to an embodiment of the present invention.

[0023] Figure 4 This is a partial structural schematic diagram of the valve body of the pressure reducing valve of the vehicle fuel cell system according to an embodiment of the present invention.

[0024] Figure 5 This is a partial structural schematic diagram of the positioning component of the pressure reducing valve of a vehicle fuel cell system according to an embodiment of the present invention.

[0025] Reference numerals: 1. Pressure reducing valve of vehicle fuel cell system; 10. Valve body; 11. Valve cavity; 12. Valve core stop platform; 13. End cover positioning platform; 20. End cover; 21. Positioning groove; 22. Positioning hole; 23. Isolation part; 24. Valve hole; 25. Valve hole part; 26. Groove part; 30. Valve core; 31. Stop edge; 32. Flow channel; 40. Elastic element; 50. Positioning element; 51. Tooling groove; 52. Through hole. Detailed Implementation

[0026] This application is based on the inventor's discoveries and understanding of the following facts and problems:

[0027] The pressure reducing valve of the vehicle fuel cell system in related technologies has a relatively complex structure and a large number of parts in order to achieve the positioning and assembly of various structures. On the one hand, this leads to high assembly difficulty and low assembly efficiency, affecting the reliability and yield of finished products and increasing production costs. On the other hand, it results in a large overall axial dimension, which is not convenient for installation in a small space.

[0028] While similar pressure-reducing valves in other fields, such as one-way valves, have relatively simple structures, they are difficult to apply directly to vehicle fuel cell systems due to the complex operating environment of these valves.

[0029] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0030] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model 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 of this utility model. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0031] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0032] The pressure reducing valve 1 of a vehicle fuel cell system according to an embodiment of the present invention is described below with reference to the accompanying drawings.

[0033] like Figures 1-5 As shown, the pressure reducing valve 1 of the vehicle fuel cell system according to an embodiment of the present invention includes a valve body 10, an end cap 20, a valve core 30, and an elastic element 40.

[0034] End cap 20 is mounted on valve body 10 and together with valve body 10 defines valve cavity 11. End cap 20 is provided with positioning groove 21. Valve core 30 is axially movable within valve cavity 11. Elastic member 40 is connected to valve core 30 and end cap 20 respectively, and at least part of it fits within positioning groove 21.

[0035] According to the embodiment of the present invention, the pressure reducing valve 1 of the vehicle fuel cell system is provided with an end cap 20. The end cap 20 and the valve body 10 can jointly define the valve cavity 11. The end cap 20 can be used to position the valve core 30. Furthermore, by providing a positioning groove 21 on the end cap 20, at least a portion of the elastic element 40 can be fitted into the positioning groove 21. The end cap 20 can simultaneously position the elastic element 40. Compared with pressure reducing valves in related technologies, the end cap 20 can simultaneously define the valve cavity 11 and position the elastic element 40. By integrating the functions of defining the valve cavity 11 and positioning the elastic element 40 on the end cap 20, other positioning parts are eliminated, reducing possible leakage points, reducing the number of seals, reducing the number of overall parts, simplifying the structure of the pressure reducing valve 1, facilitating the installation and maintenance of the pressure reducing valve 1, improving production efficiency, reliability and yield, reducing production costs, and also reducing the overall axial dimension, making it easier to install the pressure reducing valve 1 in a smaller space.

[0036] Therefore, the pressure reducing valve 1 of the vehicle fuel cell system according to the present invention has the advantages of fewer parts, higher production efficiency, stronger reliability, lower cost, and smaller size.

[0037] The pressure reducing valve 1 of a vehicle fuel cell system according to a specific embodiment of the present invention is described below with reference to the accompanying drawings.

[0038] In some specific embodiments of this utility model, such as Figures 1-5 As shown, the pressure reducing valve 1 of the vehicle fuel cell system according to an embodiment of the present invention includes a valve body 10, an end cap 20, a valve core 30, and an elastic element 40.

[0039] Specifically, such as Figures 1-3 As shown, the elastic element 40 is a spring, and the positioning groove 21 is an annular groove, with one end of the elastic element 40 fitting into the positioning groove 21. Preferably, the elastic element 40 is a helical spring. This facilitates the full positioning of the elastic element 40 using the positioning groove 21, improving the stability of the elastic element 40.

[0040] Advantageously, such as Figures 1-3 As shown, the end cap 20 is provided with a positioning hole 22, and a part of the valve core 30 is axially movable and fitted into the positioning hole 22. An isolation part 23 is provided between the positioning hole 22 and the positioning groove 21. This can prevent the elastic element 40 from interfering with the movement of the valve core 30.

[0041] Specifically, such as Figures 1-3 As shown, the end cap 20 includes a valve hole portion 25 and a groove portion 26. The diameter of the groove portion 26 is larger than the diameter of the valve hole portion 25. A valve hole 24 is formed on the valve hole portion 25, and a positioning groove 21 is formed on the groove portion 26. This facilitates the formation of the valve hole 24 and the positioning groove 21.

[0042] Optionally, such asFigures 1-3 As shown, the axial height a of the isolation part 23 is 10-15 mm, and the axial height b of the radial outer wall of the positioning groove 21 is 5-10 mm. This facilitates ensuring the positioning effect of the positioning groove 21 on the elastic member 40.

[0043] Specifically, the axial depth of the positioning hole 22 is 15-25 mm. This ensures effective positioning of the valve core 30.

[0044] Figure 1 and Figure 5 A pressure reducing valve 1 for a vehicle fuel cell system according to some examples of the present invention is shown. For example... Figure 1 and Figure 5 As shown, the pressure reducing valve 1 of the vehicle fuel cell system also includes a positioning member 50. The outer circumferential surface of the positioning member 50 is provided with an external thread, and the valve body 10 is provided with an internal thread. The internal thread and the external thread are threadedly engaged. The end cap 20 is radially engaged within the valve body 10, and the positioning member 50 axially stops the end cap 20 to prevent it from detaching from the valve body 10. The positioning member 50 is provided with a through hole 52, and the end cap 20 is radially engaged within the through hole 52. Specifically, an end cap positioning platform 13 may be provided within the valve body 10, and the groove 26 of the end cap 20 may be stopped between the positioning member 50 and the end cap positioning platform 13. The valve hole 25 may be engaged within the through hole 52. The positioning member 50 can function as an external thread nut. In this way, the end cap 20 can be installed on the valve body 10 using the positioning member 50.

[0045] Advantageously, such as Figure 1 and Figure 5 As shown, the end face of the positioning member 50 is provided with a tooling groove 51 suitable for cooperating with a rotating tooling. Specifically, there can be multiple tooling grooves 51, which are spaced apart along the circumference of the positioning member 50. This facilitates tightening or loosening of the positioning member 50 using a rotating tooling, and facilitates the installation and removal of the positioning member 50.

[0046] Specifically, such as Figure 1 As shown, the end cap 20 is provided with a valve hole 24. The valve core 30 is movably disposed in the valve cavity 11 between an open position and a closed position. The valve core 30 opens the valve hole 24 in the open position and closes the valve hole 24 in the closed position. The elastic member 40 is adapted to drive the valve core 30 to move towards the open position. Specifically, when the valve core 30 is in the closed position, its end face closes the valve hole 24. This facilitates the opening and closing of the valve hole 24 by the valve core 30 to realize the opening and closing of the pressure reducing valve 1 and the flow regulation.

[0047] More specifically, such as Figure 1As shown, the valve core 30 has a flow channel 32 inside. When the valve core 30 is in the open position, the flow channel 32 is connected to the valve hole 24, and when the valve core 30 is in the closed position, the flow channel 32 is disconnected from the valve hole 24. This allows airflow to pass through the inside of the valve core 30 after the valve hole 24 is open, thus enabling the pressure reducing valve 1 to be turned on.

[0048] More advantageously, such as Figure 1 As shown, the valve body 10 has a valve core stop platform 12, and the outer peripheral surface of the valve core 30 is provided with a stop edge 31. When the valve core 30 is in the open position, the stop edge 31 abuts against the valve core stop platform 12, and the elastic member 40 abuts against the stop edge 31. In this way, the axial movement of the valve core 30 can be limited by the valve core stop platform 12 and the stop edge 31, and the elastic member 40 can also be limited by the stop edge 31.

[0049] The vehicle according to an embodiment of the present invention is described below. The vehicle according to an embodiment of the present invention includes a pressure reducing valve 1 of the vehicle fuel cell system according to the above embodiment of the present invention.

[0050] The vehicle according to the present invention has advantages such as fewer parts, higher production efficiency, stronger reliability, lower cost, and smaller size by utilizing the pressure reducing valve 1 of the vehicle fuel cell system according to the above embodiment of the present invention.

[0051] Other components and operations of the vehicle according to embodiments of the present invention are known to those skilled in the art and will not be described in detail here.

[0052] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0053] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A pressure reducing valve for a vehicle fuel cell system, characterized in that, include: Valve body; An end cap is mounted on the valve body and together with the valve body defines a valve cavity; the end cap is provided with a positioning groove. A valve core, which is axially movable within the valve cavity; An elastic element is connected to the valve core and the end cap respectively, and at least a portion of the elastic element is fitted into the positioning groove.

2. The pressure reducing valve of the vehicle fuel cell system according to claim 1, characterized in that, The elastic element is a spring, the positioning groove is an annular groove, and one end of the elastic element is fitted into the positioning groove.

3. The pressure reducing valve of the vehicle fuel cell system according to claim 1, characterized in that, The end cap is provided with a positioning hole, and a part of the valve core is axially movable and fitted into the positioning hole. An isolation part is provided between the positioning hole and the positioning groove.

4. The pressure reducing valve of the vehicle fuel cell system according to claim 3, characterized in that, The axial height of the isolation part is 10-15 mm, and the axial height of the radial outer wall of the positioning groove is 5-10 mm.

5. The pressure reducing valve of the vehicle fuel cell system according to claim 1, characterized in that, It also includes a positioning element, the outer peripheral surface of which is provided with an external thread, the valve body is provided with an internal thread, the internal thread and the external thread are threadedly engaged, the end cap is radially engaged in the valve body, the positioning element stops the end cap axially to prevent the end cap from detaching from the valve body, the positioning element is provided with a through hole, and the end cap is radially engaged in the through hole.

6. The pressure reducing valve of the vehicle fuel cell system according to claim 5, characterized in that, The end face of the positioning component is provided with a tooling groove suitable for cooperating with a rotating tooling.

7. The pressure reducing valve for a vehicle fuel cell system according to claim 1, characterized in that, The end cap is provided with a valve hole, and the valve core is movably disposed in the valve cavity between an open position and a closed position. The valve core opens the valve hole in the open position and closes the valve hole in the closed position. The elastic element is adapted to drive the valve core to move to the open position.

8. The pressure reducing valve for a vehicle fuel cell system according to claim 7, characterized in that, The valve body has a valve core stop platform, and the outer peripheral surface of the valve core is provided with a stop edge. When the valve core is in the open position, the stop edge abuts against the valve core stop platform, and the elastic member abuts against the stop edge.

9. The pressure reducing valve of the vehicle fuel cell system according to claim 7, characterized in that, The valve core has a flow channel inside. When the valve core is in the open position, the flow channel is connected to the valve hole. When the valve core is in the closed position, the flow channel is disconnected from the valve hole.

10. A vehicle, characterized in that, Includes a pressure reducing valve for a vehicle fuel cell system according to any one of claims 1-9.

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