Air spring footstock structure and air spring assembly

Abstract

According to the air spring footstock structure and the air spring assembly, the main air cavity and the auxiliary air cavity are formed in the upper footstock assembly, and the main air cavity and the auxiliary air cavity are communicated through the second air channel, so that when the second air channel is closed by the electromagnetic valve, the main air cavity and the auxiliary air cavity are in a non-communicated state; at the moment, the main air cavity independently forms an air spring air chamber. When the electromagnetic valve opens the second gas channel, the main gas cavity and the auxiliary gas cavity can be in a communication state, at the moment, the main gas cavity and the auxiliary gas cavity jointly form an air spring gas chamber, the volume of the air spring gas chamber is effectively increased, and the rigidity of the air spring assembly can be improved and adjusted; the air spring assembly can be adaptively adjusted within a wide rigidity range when coping with complex driving road conditions. Therefore, the switching of a single cavity and double cavities on the upper footstock component can be realized through the opening and closing of the electromagnetic valve, so that the air spring assembly can realize different rigidity adjustment under different road conditions.

Description

Technical Field

[0001] The utility model belongs to the technical field of air springs, and in particular relates to an air spring top seat structure and an air spring assembly. Background Art

[0002] The air spring assembly is a new type of elastic element for automobile suspension. Its excellent vibration reduction performance and controllability are favored by automobile manufacturers. Its main working principle is to change the stiffness of the air spring by changing the cross-sectional area of ​​the piston, thereby changing the handling stability and smoothness of the car.

[0003] Currently, since most air spring assemblies achieve limited adjustment of stiffness by changing the cross-sectional area of ​​the piston, it is impossible to adaptively adjust the air spring assembly within a wider stiffness range, which makes it difficult for the air spring assembly to cope with various complex driving conditions and customer requirements for vehicle driving comfort. Utility Model Content

[0004] Based on the above-mentioned problems existing in the prior art, one of the purposes of the embodiments of the utility model is to provide an air spring top seat structure to solve the problem that the air spring assembly in the prior art cannot achieve adaptive adjustment within a wider stiffness range when dealing with complex driving conditions.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: to provide an air spring top seat structure, including:

[0006] The upper top seat assembly is provided with a receiving cavity for accommodating the shock absorber assembly, the portion of the receiving cavity outside the shock absorber assembly forms a main air cavity, the upper top seat assembly is also provided with a first air channel for connecting the main air cavity with the outside, a secondary air cavity for expanding the air chamber volume of the air spring to adjust the stiffness of the air spring assembly, and a second air channel connecting the main air cavity and the secondary air cavity;

[0007] A pressure-maintaining valve, used for maintaining the pressure in the air chamber of the air spring within a preset pressure range, the pressure-maintaining valve being installed in the first gas channel; and

[0008] a solenoid valve, used for selectively opening or closing the second gas channel, the solenoid valve being installed at a position on the upper seat assembly corresponding to the second gas channel;

[0009] Among them, when the solenoid valve closes the second gas channel, the main air cavity and the auxiliary air cavity are in a non-connected state, so that the main air cavity alone constitutes an air spring air chamber; when the solenoid valve opens the second gas channel, the main air cavity and the auxiliary air cavity are in a connected state, so that the main air cavity and the auxiliary air cavity together constitute an air spring air chamber.

[0010] Furthermore, the upper seat assembly includes an upper seat body and a sealing assembly, the upper seat body is internally formed with an accommodating cavity for accommodating the shock absorber assembly, the sealing assembly includes an upper sealing cover and a lower closing member, the upper sealing cover is covered on the top opening of the upper seat body, and the lower closing member is covered on the bottom opening of the upper seat body, so that the part inside the accommodating cavity outside the shock absorber assembly forms a main air cavity; the upper seat body is provided with the first gas channel, the auxiliary air cavity and the second gas channel.

[0011] Furthermore, a flow-dividing air cavity is also provided on the upper seat body, and the flow-dividing air cavity is communicated with the first gas channel, the second gas channel and the main gas cavity respectively.

[0012] Furthermore, a third gas channel connected to the main gas cavity is also provided on the upper seat body.

[0013] Furthermore, a mounting groove for accommodating and positioning the solenoid valve is provided at a position corresponding to the second gas channel on the upper seat body, and the mounting groove is connected to the second gas channel. A fourth gas channel connecting the auxiliary gas cavity and the mounting groove is also provided on the upper seat body.

[0014] Furthermore, a sealing ring is provided between the outer side wall of the solenoid valve and the inner side wall of the mounting groove.

[0015] Further, the upper seat body includes an upper shell and a lower shell connected to the upper shell, the upper shell is provided with a first cavity and a first groove opening downward, the lower shell is provided with a second cavity and a second groove opening upward, when the upper shell is connected to the lower shell, the first cavity and the second cavity together constitute the accommodating cavity, the first groove and the second groove enclose the auxiliary air cavity, the first gas channel and the second gas channel are provided on the upper shell and / or the lower shell, the upper sealing cover is connected to the upper shell, and the lower closing piece is connected to the lower shell.

[0016] Furthermore, the upper shell and the lower shell are welded by heat fusion welding.

[0017] Furthermore, the upper seat assembly also includes a first expansion member for expanding the upper shell radially outward and a second expansion member for expanding the lower shell radially outward.

[0018] Based on the above problems existing in the prior art, a second purpose of the embodiments of the present utility model is to provide an air spring assembly having the air spring top seat structure in any of the above schemes.

[0019] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is: to provide an air spring assembly, including the air spring top seat structure provided by any of the above-mentioned solutions.

[0020] Compared with the prior art, the above one or more technical solutions in the embodiments of the present invention have at least one of the following beneficial effects:

[0021] The air spring top seat structure and the air spring assembly in the embodiment of the utility model are provided with a main air cavity and a secondary air cavity respectively on the upper top seat component. Since the main air cavity and the secondary air cavity are connected through the second gas channel, when the electromagnetic valve closes the second gas channel, the main air cavity and the secondary air cavity can be in a non-connected state, and the main air cavity alone constitutes the air chamber of the air spring. When the electromagnetic valve opens the second gas channel, the main air cavity and the secondary air cavity can be in a connected state, and the main air cavity and the secondary air cavity together constitute the air chamber of the air spring, effectively expanding the volume of the air chamber of the air spring, improving and adjusting the stiffness of the air spring assembly, so that the air spring assembly can realize adaptive adjustment within a wider stiffness range when dealing with complex driving conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. 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 these drawings without paying creative labor.

[0023] Figure 1 A schematic diagram of the three-dimensional structure of the air spring top seat structure provided by an embodiment of the utility model;

[0024] Figure 2 Another three-dimensional structural schematic diagram of the air spring top seat structure provided by an embodiment of the utility model;

[0025] Figure 3 A schematic cross-sectional view of the top seat structure of an air spring provided in an embodiment of the utility model;

[0026] Figure 4 A partial cross-sectional structural schematic diagram of an air spring top seat structure provided in an embodiment of the utility model;

[0027] Figure 5 An exploded view of the air spring top seat structure provided by an embodiment of the utility model;

[0028] Figure 6 An exploded view of the top seat body provided by an embodiment of the utility model;

[0029] Figure 7 for Figure 6 A schematic diagram of the partially enlarged structure;

[0030] Figure 8 A schematic diagram of the three-dimensional structure of an air spring assembly provided in an embodiment of the utility model.

[0031] Among them, the reference numerals in the figure are:

[0032] 1-upper seat assembly; 11-top seat body; 111-upper shell; 112-lower shell; 12-sealing assembly; 121-upper sealing cover; 122-lower closure; 13-first groove; 14-second groove;

[0033] 2-pressure maintaining valve; 3-solenoid valve; 4-first gas channel;

[0034] 5-main gas cavity; 6-secondary gas cavity; 7-secondary gas channel;

[0035] 8-diverter air cavity; 9-third gas channel; 10-installation slot;

[0036] 20-seal ring; 30-fourth gas channel; 40-first expansion member;

[0037] 50 - second expansion member; 60 - shock absorber assembly. DETAILED DESCRIPTION

[0038] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0039] It should be noted that when an element is referred to as being "connected to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0040] In addition, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second", and "third" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0041] In the description of the present invention, it should be understood that the terms "center", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship 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 dedicated orientation, be constructed and operated in a dedicated orientation, and therefore cannot be understood as a limitation on the present invention.

[0042] In the description of the present utility model, 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, 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, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0043] Reference throughout the specification to "one embodiment" or "an embodiment" means that the specialized features, structures, or characteristics described in connection with the embodiment are included in at least one embodiment of the present application. Thus, the phrases "in one embodiment," "in some embodiments," or "in some of these embodiments" appear in various places throughout the specification, not all of which refer to the same embodiment. Furthermore, in one or more embodiments, the specialized features, structures, or characteristics may be combined in any suitable manner.

[0044] Please also read Figures 1 to 8, the air spring top seat structure provided by the embodiment of the utility model is now described. The air spring top seat structure provided by the embodiment of the utility model includes an upper top seat assembly 1, a pressure-maintaining valve 2 and a solenoid valve 3. The upper top seat assembly 1 is provided with a receiving chamber 5 for accommodating the shock absorber assembly 60. The portion of the receiving chamber 5 outside the shock absorber assembly 60 forms a main air chamber. The upper top seat assembly 1 is also provided with a first gas channel 4 for connecting the main air chamber with the outside, a secondary air chamber 6 for expanding the volume of the air spring air chamber to improve and adjust the stiffness of the air spring assembly, and a second gas channel 7 connecting the main air chamber and the secondary air chamber 6. The pressure-maintaining valve 2 is installed in the first gas channel 4, and the pressure-maintaining valve 2 is used to maintain the pressure in the air chamber of the air spring within a preset pressure range. The solenoid valve 3 is installed at a position on the upper top seat assembly 1 corresponding to the second gas channel 7, and the solenoid valve 3 is used to selectively open or close the second gas channel 7. When the solenoid valve 3 is powered on and the second gas channel 7 is closed, the second gas channel 7 cannot connect the main air chamber and the auxiliary air chamber 6, that is, the main air chamber and the auxiliary air chamber 6 are in a non-connected state, so that the main air chamber alone constitutes the air chamber of the air spring. When the solenoid valve 3 is powered on and the second gas channel 7 is opened, the main air chamber can be connected to the auxiliary air chamber 6 through the second gas channel 7, that is, the main air chamber and the auxiliary air chamber 6 are in a connected state, so that the main air chamber and the auxiliary air chamber 6 together constitute the air chamber of the air spring, effectively expanding the volume of the air chamber of the air spring, and being able to improve and adjust the stiffness of the air spring assembly, so that the air spring assembly can be adaptively adjusted within a wider stiffness range when dealing with complex driving conditions.

[0045] Compared with the prior art, the air spring top seat structure provided by the embodiment of the utility model is characterized in that the main air chamber and the auxiliary air chamber 6 are respectively arranged on the upper top seat assembly 1. Since the main air chamber and the auxiliary air chamber 6 are connected through the second gas channel 7, when the solenoid valve 3 closes the second gas channel 7, the main air chamber and the auxiliary air chamber 6 can be in a non-connected state, and the main air chamber alone constitutes the air chamber of the air spring. When the solenoid valve 3 opens the second gas channel 7, the main air chamber and the auxiliary air chamber 6 can be in a connected state, and the main air chamber and the auxiliary air chamber 6 together constitute the air chamber of the air spring, which effectively expands the volume of the air chamber of the air spring, improves and adjusts the stiffness of the air spring assembly, and enables the air spring assembly to achieve adaptive adjustment within a wider stiffness range when dealing with complex driving conditions. Therefore, the switching between the single chamber and the double chamber on the upper top seat assembly 1 can be achieved by opening and closing the solenoid valve 3, so that the air spring assembly can achieve different stiffness adjustments under different road conditions, which can provide both good operability and good comfort.

[0046] Please refer to Figure 1 , Figure 3 and Figure 8In some embodiments, the upper seat assembly 1 includes an upper seat body 11 and a sealing assembly 12. The upper seat body 11 has an accommodating chamber 5 for accommodating the shock absorber assembly 60 formed therein. The sealing assembly 12 includes an upper sealing cover 121 and a lower sealing member 122. The upper sealing cover 121 is covered on the top opening of the upper seat body 11, and the lower sealing member 122 is covered on the bottom opening of the upper seat body 11. The upper seat body 11 is provided with a first gas channel 4, a secondary gas chamber 6, and a second gas channel 7. The upper sealing cover 121 only needs to be covered on the top opening of the upper seat body 11, and the lower sealing member 122 needs to be covered on the bottom opening of the upper seat body 11, so that the portion of the accommodating chamber 5 outside the shock absorber assembly 60 can form a main gas chamber.

[0047] Please refer to Figure 3 , Figure 4 and Figure 6 In some embodiments, a shunt air cavity 8 is further provided on the upper seat body 11, and the shunt air cavity 8 is respectively connected with the first gas channel 4, the second gas channel 7 and the main gas cavity. Before the external air enters the main gas cavity and / or the auxiliary gas cavity 6 through the first gas channel 4, the air flow is first buffered in the shunt air cavity 8, so that the air pressure in the main gas cavity and / or the auxiliary gas cavity 6 can be maintained in a relatively stable and balanced state, avoiding large fluctuations in the air pressure in the main gas cavity and / or the auxiliary gas cavity 6 and affecting the stiffness of the gas spring assembly.

[0048] Please refer to Figure 1 , Figure 2 and Figure 3 In some of the embodiments, a third gas channel 9 connected to the main air cavity is also provided on the upper seat body 11, and the diversion air cavity 8 is connected to the main air cavity through the third gas channel 9, which is beneficial for maintaining the air pressure in the main air cavity and / or the auxiliary air cavity 6 in a relatively stable and balanced state, thereby avoiding large fluctuations in the air pressure in the main air cavity and / or the auxiliary air cavity 6 and affecting the stiffness of the gas spring assembly.

[0049] Please refer to Figure 5 , Figure 6 and Figure 7 In some of the embodiments, in order to facilitate the installation of the solenoid valve 3, a mounting groove 10 for accommodating and positioning the solenoid valve 3 is further provided at a position corresponding to the second gas channel 7 on the upper seat body 11, and the mounting groove 10 is connected to the second gas channel 7. A fourth gas channel 30 connecting the auxiliary gas cavity 6 and the mounting groove 10 is also provided on the upper seat body 11.

[0050] Please refer to Figure 4 In some of the embodiments, a sealing ring 20 is provided between the outer wall of the solenoid valve 3 and the inner wall of the mounting groove 10 , which effectively improves the sealing between the mounting groove 10 and the solenoid valve 3 .

[0051] Please refer to Figure 4 , Figure 5 and Figure 6 In some embodiments, the upper seat body 11 includes an upper shell 111 and a lower shell 112 connected to the upper shell 111, the upper shell 111 is provided with a first cavity and a first groove 13 opening downward, the lower shell 112 is provided with a second cavity and a second groove 14 opening upward, when the upper shell 111 is connected to the lower shell 112, the first cavity and the second cavity together constitute a accommodating cavity 5, the first groove 13 and the second groove 14 are enclosed to form a secondary gas cavity 6, the first gas channel 4 and the second gas channel 7 are provided on the upper shell 111 and / or the lower shell 112, the upper sealing cover 121 is connected to the upper shell 111, and the lower closing piece 122 is connected to the lower shell 112, which can adapt to different sizes according to different products, achieve modularization, and reduce costs.

[0052] Please refer to Figure 3 and Figure 4 In some of the embodiments, the upper shell 111 and the lower shell 112 are welded by hot-melt welding, and can adapt to different sizes according to different products, so as to achieve modularization and reduce costs.

[0053] Please refer to Figure 1 , Figure 2 and Figure 3 In some embodiments, the upper seat assembly 1 also includes a first expansion member 40 for expanding the upper shell 111 radially outward and a second expansion member 50 for expanding the lower shell 112 radially outward. The upper shell 111 is expanded radially outward by the first expansion member 40, and the lower shell 112 is expanded radially outward by the second expansion member 50, so that the strength of the overall structure of the upper seat assembly 1 can be enhanced.

[0054] Please refer to Figure 8 The embodiment of the utility model further provides an air spring assembly, which includes the air spring top seat structure provided in any of the above embodiments. Since the air spring assembly has all the technical features of the air spring top seat structure provided in any of the above embodiments, it has the same technical effects as the above air spring top seat structure.

[0055] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An air spring top seat structure, used for an air spring assembly, characterized in that: include: The upper top seat assembly is provided with a receiving cavity for accommodating the shock absorber assembly, the portion of the receiving cavity outside the shock absorber assembly forms a main air cavity, the upper top seat assembly is also provided with a first air channel for connecting the main air cavity with the outside, a secondary air cavity for expanding the air chamber volume of the air spring to adjust the stiffness of the air spring assembly, and a second air channel connecting the main air cavity and the secondary air cavity; A pressure-maintaining valve, used to maintain the pressure in the air chamber of the air spring within a preset pressure range, the pressure-maintaining valve being installed in the first gas channel; as well as a solenoid valve, used for selectively opening or closing the second gas channel, the solenoid valve being installed at a position on the upper seat assembly corresponding to the second gas channel; Among them, when the solenoid valve closes the second gas channel, the main air cavity and the auxiliary air cavity are in a non-connected state, so that the main air cavity alone constitutes an air spring air chamber; when the solenoid valve opens the second gas channel, the main air cavity and the auxiliary air cavity are in a connected state, so that the main air cavity and the auxiliary air cavity together constitute an air spring air chamber.

2. The air spring top seat structure according to claim 1, characterized in that: The upper seat assembly includes an upper seat body and a sealing assembly, wherein the upper seat body is internally formed with an accommodating cavity for accommodating the shock absorber assembly, and the sealing assembly includes an upper sealing cover and a lower closing member, wherein the upper sealing cover is covered on the top opening of the upper seat body, and the lower closing member is covered on the bottom opening of the upper seat body, so that the portion inside the accommodating cavity outside the shock absorber assembly forms a main air cavity; the upper seat body is provided with the first gas channel, the auxiliary gas cavity and the second gas channel.

3. The air spring top seat structure according to claim 2, characterized in that: The upper seat body is also provided with a flow-dividing air cavity, and the flow-dividing air cavity is communicated with the first gas channel, the second gas channel and the main gas cavity respectively.

4. The air spring top seat structure according to claim 3, characterized in that: The upper seat body is also provided with a third gas passage connected to the main gas cavity.

5. The air spring top seat structure according to claim 3, characterized in that: A mounting groove for accommodating and positioning the solenoid valve is provided at a position corresponding to the second gas channel on the upper seat body, and the mounting groove is connected to the second gas channel. A fourth gas channel connecting the auxiliary gas cavity and the mounting groove is also provided on the upper seat body.

6. The air spring top seat structure according to claim 5, characterized in that: A sealing ring is provided between the outer side wall of the solenoid valve and the inner side wall of the mounting groove.

7. The air spring top seat structure according to any one of claims 2 to 6, characterized in that: The upper seat body includes an upper shell and a lower shell connected to the upper shell, the upper shell is provided with a first cavity and a first groove opening downward, the lower shell is provided with a second cavity and a second groove opening upward, when the upper shell is connected to the lower shell, the first cavity and the second cavity together constitute the accommodating cavity, the first groove and the second groove enclose the auxiliary air cavity, the first gas channel and the second gas channel are provided on the upper shell and / or the lower shell, the upper sealing cover is connected to the upper shell, and the lower closing piece is connected to the lower shell.

8. The air spring top seat structure according to claim 7, characterized in that: The upper shell and the lower shell are welded by heat fusion welding.

9. The air spring top seat structure according to claim 7, characterized in that: The upper seat assembly also includes a first expansion member for expanding the upper shell radially outward and a second expansion member for expanding the lower shell radially outward.

10. An air spring assembly, characterized in that: The invention comprises an air spring top seat structure as claimed in any one of claims 1 to 9.

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