Energy accumulator and vehicle

Abstract

The embodiment of the utility model provides an energy accumulator and a vehicle. The energy accumulator comprises a shell, an elastic diaphragm and a limiting piece. The shell is provided with a cavity; the elastic diaphragm is arranged in the cavity and divides the cavity into a first cavity body and a second cavity body which are distributed in the first direction, and under the deformation effect of the elastic diaphragm, the volume ratio of the first cavity body to the second cavity body changes; the shell is further provided with an air inflation connector, and the air inflation connector communicates with the first cavity. The limiting piece is arranged between the inflation connector and the elastic diaphragm and used for limiting the elastic diaphragm to make contact with the inflation connector in the deformation process. Therefore, as the limiting piece is arranged between the inflation connector and the elastic diaphragm, namely in the first cavity, on one hand, the elastic diaphragm can be limited to be in contact with the inflation connector in the deformation process, and the service life of the elastic diaphragm can be prolonged; and on the other hand, the inflation volume of the first cavity can be adaptively adjusted by changing the size of the limiting piece, and the universality of the energy accumulator can be improved.

Description

Technical Field

[0001] The present application belongs to the field of vehicle technology, and specifically relates to an accumulator and a vehicle. Background Art

[0002] The accumulator is an energy storage device widely used in the hydraulic brake system of vehicles. The accumulator can convert the hydraulic energy in the hydraulic brake system into compression energy or potential energy and store it; when the hydraulic brake system needs it, it converts the compression energy or potential energy into hydraulic energy and releases it to supply the hydraulic brake system, thereby alleviating the pressure fluctuation of the hydraulic brake system and improving the safety and reliability of vehicle braking.

[0003] In the prior art, an accumulator generally includes a shell and an elastic diaphragm. The shell is provided with an air charging interface. The elastic diaphragm is arranged inside the shell and divides the shell into an air chamber and a liquid chamber. The elastic diaphragm is deformed to change the volume ratio of the air chamber and the liquid chamber, thereby realizing energy storage and release. However, since the elastic diaphragm may come into contact with the air charging interface during deformation, indentations or even cracks may be generated on the surface of the elastic diaphragm, resulting in a reduction in the service life of the elastic diaphragm. Utility Model Content

[0004] The present application aims to provide an accumulator and a vehicle to solve the problem that the elastic diaphragm of the existing accumulator is prone to indentation or even rupture during contact with the inflation interface, resulting in a reduction in the service life of the elastic diaphragm.

[0005] In order to solve the above technical problems, this application is implemented as follows:

[0006] In a first aspect, the present application discloses an accumulator, the accumulator comprising a housing, an elastic diaphragm and a limiter;

[0007] The housing is provided with a chamber;

[0008] The elastic diaphragm is disposed in the chamber and divides the chamber into a first chamber and a second chamber distributed along a first direction, and under the deformation of the elastic diaphragm, the volume ratio of the first chamber and the second chamber changes;

[0009] The housing is further provided with an air charging interface, and the air charging interface is connected to the first chamber;

[0010] The limiting member is disposed between the inflation port and the elastic diaphragm, and is used to limit the elastic diaphragm from contacting the inflation port during deformation.

[0011] Optionally, the limiting member is fixedly connected to the shell.

[0012] Optionally, the shell has a first wall, the inflation interface is arranged on the first wall, and the limiting member is fixedly connected to the first wall.

[0013] Optionally, a first gap for gas to pass through is provided between the limiting member and the first wall.

[0014] Optionally, a first limiting convex rib is provided on a side of the limiting member close to the first wall, and the first limiting convex rib abuts against the first wall to form the first gap between the first wall and the limiting member.

[0015] Optionally, the accumulator further comprises a limit clamp ring, which is fixedly connected to the housing and is located between the limit member and the elastic diaphragm;

[0016] At least a portion of the limiting member abuts against the limiting clamp ring, so that the limiting member is fixedly connected to the housing.

[0017] Optionally, the limiting member is movably connected to the shell.

[0018] Optionally, the housing has a first wall, and the inflation interface is arranged on the first wall;

[0019] The limiting member is movably connected to the housing;

[0020] The first chamber has an inflated state and a deflated state. In the inflated state, the limiter maintains a second gap with the first wall to allow gas to pass through. In the deflated state, the limiter abuts against the first wall.

[0021] Optionally, the accumulator further comprises a limit clamp ring, which is fixedly connected to the housing and is located between the limit member and the elastic diaphragm;

[0022] In the inflated state, the limit member abuts against the limit snap ring, and in the deflated state, the limit member releases the abutment against the limit snap ring.

[0023] Optionally, a limiting protrusion or a limiting groove is provided on one side of the limiting clamp close to the limiting member;

[0024] The limiting member is provided with the limiting protrusion or the limiting groove on one side close to the limiting clamp ring, and at least part of the limiting groove abuts against the limiting protrusion to limit the limiting member.

[0025] Optionally, the limiting protrusion is arranged on the limiting clamp ring, and the limiting protrusion has a first non-abutting surface and a first abutting surface which are perpendicular to each other, and the first abutting surface is perpendicular to the first direction;

[0026] The limiting groove is arranged on the limiting member, and the limiting groove has a second non-abutting surface and a second abutting surface which are perpendicular to each other, and the second abutting surface is perpendicular to the first direction;

[0027] The first non-abutting surface and the second non-abutting surface are spaced apart from each other, and the first abutting surface abuts against the second abutting surface, so that the limiting groove abuts against the limiting protrusion.

[0028] Optionally, at least one of the first abutting surface and the second abutting surface is provided with a second limiting convex rib, and the second limiting convex rib is used to maintain a third gap between the first abutting surface and the second abutting surface to allow gas to pass through.

[0029] Optionally, at least a portion of the stopper on one side close to the elastic diaphragm extends toward the elastic diaphragm to form an annular flange;

[0030] A third limiting rib is arranged on one side of the annular flange close to the limiting clamp ring, and the third limiting rib abuts against the limiting clamp ring so that the limiting clamp ring and the annular flange maintain a fourth gap for passing gas.

[0031] Optionally, the annular flange is arc-shaped on a side close to the elastic diaphragm.

[0032] Optionally, the limiting member is provided with an airway structure, the airway structure is opposite to the inflation interface, and the airway structure is used for passing gas.

[0033] Optionally, the limiting member comprises a second wall and a third wall which are arranged away from each other along the first direction, the third wall is arranged close to the elastic diaphragm, and the third wall and the elastic diaphragm enclose a cavity;

[0034] The airway structure comprises a communication port and an airway;

[0035] The communication port is disposed on the second wall, and the communication port is opposite to the inflation port;

[0036] The air channel comprises two ends which are arranged away from each other, one end of the air channel is communicated with the communication port, and the other end of the air channel extends toward the elastic diaphragm and is communicated with the cavity.

[0037] Optionally, a plurality of the air passages are provided, and the plurality of the air passages are radially arranged in a circumferential direction of the communication port.

[0038] Optionally, the limiting member further includes a fourth wall, and the fourth wall is located between the second wall and the third wall;

[0039] The airway comprises a first airway and a second airway that are interconnected;

[0040] The first air channel is opened in the second wall, and one end of the first air channel away from the second air channel is connected to the communication port;

[0041] The second air channel is opened in the fourth wall, and one end of the second air channel away from the first air channel is communicated with the cavity.

[0042] Optionally, the airway includes a first airway and a second airway that are interconnected;

[0043] The first air channel is opened in the second wall, and one end of the first air channel away from the second air channel is connected to the communication port;

[0044] The second air channel is arranged to penetrate the second wall and the third wall, and one end of the second air channel away from the first air channel is communicated with the cavity.

[0045] Optionally, the limiting member includes a third wall, the third wall is arranged close to the elastic diaphragm, and the third wall is in an arc shape.

[0046] In a second aspect, the present application further discloses a vehicle, comprising the energy accumulator as described in any one of the above items.

[0047] In the embodiment of the present application, the accumulator includes a housing, an elastic diaphragm and a stopper; the housing is provided with a chamber; the elastic diaphragm is provided in the chamber to separate the chamber into a first chamber and a second chamber distributed along a first direction, and under the deformation of the elastic diaphragm, the volume ratio of the first chamber and the second chamber changes; the housing is also provided with an inflation interface, which is connected to the first chamber; the stopper is provided between the inflation interface and the elastic diaphragm, and the stopper is used to limit the elastic diaphragm from contacting the inflation interface during deformation. Since a stopper is provided between the inflation interface and the elastic diaphragm, that is, in the first chamber. In this way, on the one hand, the elastic diaphragm can be limited from contacting the inflation interface during deformation, thereby effectively avoiding the indentation or even crack on the surface of the elastic diaphragm caused by multiple contacts between the elastic diaphragm and the inflation interface, which is beneficial to improve the service life of the elastic diaphragm. On the other hand, the inflation volume of the first chamber can be adaptively adjusted by changing the volume of the stopper, which is beneficial to improve the versatility of the accumulator.

[0048] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0050] Figure 1 It is a structural schematic diagram of an accumulator in the prior art;

[0051] Figure 2 is a structural schematic diagram of an accumulator provided in an embodiment of the present application;

[0052] Figure 3 This is one of the structural schematic diagrams of a position limiting member provided in an embodiment of the present application;

[0053] Figure 4 This is the second structural schematic diagram of a position limiting member provided in an embodiment of the present application;

[0054] Figure 5 This is the third structural schematic diagram of a position limiting member provided in an embodiment of the present application;

[0055] Figure 6 It is one of the structural schematic diagrams of another type of limiter provided in the embodiment of the present application;

[0056] Figure 7 This is the second structural schematic diagram of another type of position limiting member provided in the embodiment of the present application;

[0057] Figure 8 This is one of the structural schematic diagrams of another type of position limiting member provided in the embodiment of the present application;

[0058] Fig. 9 This is the second structural schematic diagram of another kind of limit member provided in the embodiment of the present application.

[0059] Figure markings: 1. Shell, 11. First chamber, 12. Second chamber, 13. Inflation interface, 14. Hydraulic interface, 15. First wall, 2. Elastic diaphragm, 3. Limiting member, 31. Second wall, 311. First limiting rib, 32. Third wall, 33. Fourth wall, 34. Connecting port, 35. Airway, 351. First airway, 352. Second airway, 36. Limiting groove, 361. Second abutting surface, 3611. Second limiting rib, 362. Second non-abutting surface, 37. Annular flange, 371. Third limiting rib, 4. Limiting snap ring, 41. Limiting protrusion, 411. First abutting surface, 412. First non-abutting surface, X. First direction. DETAILED DESCRIPTION

[0060] The embodiments of the utility model will be described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the utility model, and cannot be understood as limiting the utility model. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0061] The term "first" or "second" in the specification and claims of this application may include one or more of the features explicitly or implicitly. In the description of this utility model, unless otherwise specified, "multiple" means two or more. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / " generally means that the objects connected before and after are in an "or" relationship.

[0062] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations 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 referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0063] 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, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected 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.

[0064] Reference Figure 1 , shows a schematic diagram of the structure of the accumulator in the prior art, such as Figure 1As shown, the existing accumulator includes a shell 1 and an elastic diaphragm 2. The shell 1 is provided with a chamber. The elastic diaphragm 2 is arranged in the chamber and divides the chamber into a first chamber 11, i.e., an air chamber, and a second chamber 12, i.e., a liquid chamber. Under the deformation of the elastic diaphragm 2, the volume ratio of the first chamber 11 and the second chamber 12 changes, thereby realizing energy storage and release. Among them, the shell 1 is provided with a charging interface 13 and a hydraulic interface 14. The charging interface 13 is connected to the first chamber 11, and the charging interface 13 is used to charge a gas with a certain pressure into the first chamber 11. The hydraulic interface 14 is connected to the second chamber 12, and the hydraulic interface 14 is used to connect to an external hydraulic system.

[0065] During the energy absorption, i.e., energy storage process of the accumulator, the liquid of the external hydraulic system enters the second chamber 12 from the hydraulic interface 14. When the liquid pressure of the second chamber 12 is greater than the gas pressure of the first chamber 11, the elastic diaphragm 2 deforms toward the direction of the gas charging interface 13 under the action of the pressure difference. As the pressure difference continues to increase, the elastic diaphragm 2 contacts the gas charging interface 13, blocking the gas charging interface 13 from the first chamber 11. When the pressure difference continues to increase, the first chamber 11 is compressed and pressurized, so that the gas pressure in the first chamber 11 is greater than the gas pressure inside the gas charging interface 13, resulting in the formation of a negative pressure space inside the gas charging interface 13, which will cause the elastic diaphragm 2 to be squeezed into the gas charging interface 13 under the action of the negative pressure. During the long-term use of the accumulator, the elastic diaphragm 2 constantly contacts the gas charging interface 13 and is squeezed into the gas charging interface 13, which easily causes the elastic diaphragm 2 to have an indentation or even a rupture at the contact portion with the gas charging interface 13, thereby reducing the service life of the elastic diaphragm 2 and affecting the performance of the accumulator.

[0066] An embodiment of the present application provides an accumulator, and the accumulator of the present application is described in detail below with reference to the accompanying drawings.

[0067] Reference Figure 2 , showing a schematic diagram of the structure of an accumulator provided in an embodiment of the present application, referring to Figures 3 to 5 , showing a schematic diagram of the structure of a limiter provided in an embodiment of the present application; referring to Figure 6 to Figure 7 , showing a schematic diagram of the structure of another limiting member provided in an embodiment of the present application; referring to Figures 8 to 9 , shows a schematic structural diagram of another limiting member provided in an embodiment of the present application.

[0068] like Figure 2As shown, the present application provides an accumulator, including a shell 1, an elastic diaphragm 2 and a limiter 3; the shell 1 is provided with a chamber; the elastic diaphragm 2 is arranged in the chamber, and divides the chamber into a first chamber 11 and a second chamber 12 distributed along a first direction X, and under the deformation of the elastic diaphragm 2, the volume ratio of the first chamber 11 and the second chamber 12 changes; the shell 1 is also provided with an inflation interface 13, and the inflation interface 13 is connected to the first chamber 11; the limiter 3 is arranged between the inflation interface 13 and the elastic diaphragm 2, and the limiter 3 is used to limit the elastic diaphragm 2 from contacting the inflation interface 13 during deformation.

[0069] In the embodiment of the present application, a limiting member 3 is provided between the inflation interface 13 and the elastic diaphragm 2, that is, in the first chamber 11. Thus, on the one hand, the elastic diaphragm 2 can be limited from contacting with the inflation interface 13 during deformation, thereby effectively avoiding the formation of indentations or even cracks on the surface of the elastic diaphragm 2 due to multiple contacts between the elastic diaphragm 2 and the inflation interface 13, which is beneficial to improving the service life of the elastic diaphragm 2. On the other hand, the inflation volume of the first chamber 11 can be adaptively adjusted by changing the volume of the limiting member 3, which is beneficial to improving the versatility of the accumulator.

[0070] It should be noted that the embodiment of the present application does not limit the material and processing method of the limiter 3, and those skilled in the art can make adjustments as needed. In one embodiment, the limiter 3 is a composite material of 70% polyhexamethylene adipamide and 30% glass fiber, which is formed by an injection molding process. In actual applications, the housing 1 of the accumulator is also provided with a hydraulic interface 14, which is connected to the second chamber 12. The hydraulic interface 14 is used to connect to an external hydraulic system, and before the accumulator leaves the factory, a protective cover needs to be installed on the hydraulic interface 14 to prevent external impurities from entering the second chamber 12. In addition, before the accumulator leaves the factory, the first chamber 11 needs to be filled with gas, and the gas sealing cover is used to cover the gas charging interface 13 to keep a certain pressure in the first chamber 11.

[0071] During the energy absorption, i.e., energy storage process of the accumulator, the liquid of the external hydraulic system enters the second chamber 12 from the hydraulic interface 14. When the liquid pressure of the second chamber 12 is greater than the gas pressure of the first chamber 11, the elastic diaphragm 2 is deformed toward the direction of the gas charging interface 13 under the action of the pressure difference, thereby compressing and pressurizing the first chamber 11. When the gas pressure of the first chamber 11 increases to be equal to the liquid pressure of the second chamber 12, i.e., the liquid pressure of the external hydraulic system, the elastic diaphragm 2 stops deforming, thus completing the absorption and storage of the energy of the external hydraulic system. In this process, since a stopper 3 is provided between the gas charging interface 13 and the elastic diaphragm 2, the elastic diaphragm 2 is in contact with the stopper 3 during the process of deforming toward the gas charging interface 13 under the action of the pressure difference, thereby effectively avoiding the formation of indentations or even cracks on the surface of the elastic diaphragm 2 due to contact with the gas charging interface 13.

[0072] During the energy release of the accumulator, i.e., the energy release process, since the liquid pressure of the external hydraulic system, i.e., the liquid pressure of the second chamber 12 is less than the gas pressure of the first chamber 11, the elastic diaphragm 2 deforms toward the hydraulic interface 14 under the action of the pressure difference, so that the second chamber 12 is compressed and pressurized, thereby increasing the liquid pressure of the second chamber 12 to release energy and supply it to the external hydraulic system. The pressure fluctuation of the external hydraulic system can be effectively alleviated by the energy absorption and release of the accumulator.

[0073] In some optional embodiments of the present application, the limiting member 3 includes a third wall 32 , the third wall 32 is disposed close to the elastic diaphragm 2 , and the third wall 32 is in an arc shape.

[0074] In practical applications, such as Figure 2 As shown, since the elastic diaphragm 2 is usually in an arc shape after deformation, the third wall 32 of the limit member 3 in the embodiment of the present application is in an arc shape, that is, there is no right-angle structure. When contacting the deformed elastic diaphragm 2, the elastic diaphragm 2 will not be scratched, and the elastic diaphragm 2 can be effectively protected, which is beneficial to improving the durability of the elastic diaphragm 2.

[0075] In some optional embodiments of the present application, the limiting member 3 is fixedly connected to the housing 1 .

[0076] Furthermore, the housing 1 has a first wall 15 , the inflation interface 13 is disposed on the first wall 15 , and the limiting member 3 is fixedly connected to the first wall 15 .

[0077] In the embodiment of the present application, since the limiter 3 is fixedly connected to the first wall 15 of the housing 1, the influence on the deformation amplitude of the elastic diaphragm 2 can be reduced, which is conducive to the miniaturization of the accumulator while meeting the energy storage requirements of the accumulator.

[0078] In some optional embodiments of the present application, a first gap for gas to pass through is provided between the limiting member 3 and the first wall 15 .

[0079] like Figures 3 to 5 As shown, a first limiting rib 311 is provided on one side of the limiting member 3 close to the first wall 15 , and the first limiting rib 311 abuts against the first wall 15 to form a first gap between the first wall 15 and the limiting member 3 .

[0080] In practical applications, the accumulator needs to deflate the first chamber 11 before leaving the factory, i.e., evacuate it, and fill the first chamber 11 with gas of a certain pressure. In the embodiment of the present application, since the first limiting rib 311 is provided on the side of the limiting member 3 close to the first wall 15 of the housing 1, the first limiting rib 311 abuts against the first wall 15, so that a first gap through which gas can pass can be formed between the first wall 15 and the limiting member 3, which is conducive to improving the efficiency of deflation of the first chamber 11, i.e., evacuation and inflation.

[0081] It should be noted that the embodiment of the present application does not limit the value of the first gap, and those skilled in the art can adjust it according to actual needs. In addition, the first limiting rib 311 can be set to one or more, and the embodiment of the present application does not limit the number of first limiting ribs 311, and those skilled in the art can adjust it according to actual needs. It is understandable that if Figure 7 As shown, when a plurality of first limiting ribs 311 are provided, the plurality of first limiting ribs 311 may be arranged at intervals along the circumferential direction of the limiting member 3 .

[0082] Furthermore, the accumulator also includes a limit snap ring 4, which is fixedly connected to the shell 1 and located between the limit member 3 and the elastic diaphragm 2; at least part of the limit member 3 abuts against the limit snap ring 4 to fix the limit member 3 to the shell 1.

[0083] In the embodiment of the present application, since a limit snap ring 4 is provided, the limit member 3 can be fixed by the abutment between the limit snap ring 4 and the limit member 3. This fixing method is simple and can simplify the structure of the limit snap ring 4 and the limit member 3, which is beneficial to reducing the processing cost of the accumulator.

[0084] It should be noted that the limiting snap ring 4 is also connected to the elastic diaphragm 2. Specifically, a slot is provided on the side of the limiting snap ring 4 facing away from the limiting member 3, and the edge of the elastic diaphragm 2 is engaged with the slot, thereby fixing the elastic diaphragm 2. It is understandable that during the deformation of the elastic diaphragm 2, the edge of the elastic diaphragm 2 will bend adaptively. Since the limiting member 3 is provided, the movement stroke of the elastic diaphragm 2 along the first direction X can be appropriately shortened, thereby reducing the bending degree of the edge of the elastic diaphragm 2, which is conducive to reducing fatigue damage caused by bending and improving the service life of the elastic diaphragm 2.

[0085] In some optional embodiments of the present application, the limiting member 3 is movably connected to the shell 1 .

[0086] Furthermore, the shell 1 has a first wall 15, and the inflation interface 13 is arranged on the first wall 15; the limit member 3 is movably connected to the shell 1; the first chamber 11 has an inflation state and a deflated state. In the inflation state, the limit member 3 maintains a second gap with the first wall 15 to allow gas to pass through, and in the deflated state, the limit member 3 abuts against the first wall 15.

[0087] In the embodiment of the present application, since the stopper 3 is movably connected to the housing 1, and when the first chamber 11 is inflated, the air pressure acts on the side of the stopper 3 close to the inflation interface 13, so that the second gap is maintained between the stopper 3 and the first wall 15 to allow gas to pass through, which is beneficial to improve the inflation efficiency of the first chamber 11. It should be noted that the embodiment of the present application does not limit the value of the second gap, and those skilled in the art can adjust it according to actual needs.

[0088] Furthermore, the accumulator also includes a limit snap ring 4, which is fixedly connected to the shell 1 and located between the limit member 3 and the elastic diaphragm 2; in the inflated state, the limit member 3 abuts against the limit snap ring 4, and in the deflated state, the limit member 3 and the limit snap ring 4 are released from abutment.

[0089] In the embodiment of the present application, since a limit snap ring 4 is provided, the limit member 3 can be limited by the abutment between the limit snap ring 4 and the limit member 3. This limiting method is simple and can simplify the structure of the limit snap ring 4 and the limit member 3, which is beneficial to reducing the processing cost of the accumulator.

[0090] In some optional embodiments of the present application, a limiting protrusion 41 or a limiting groove 36 is provided on the side of the limiting snap ring 4 close to the limiting member 3; a limiting protrusion 41 or a limiting groove 36 is provided on the side of the limiting member 3 close to the limiting snap ring 4, and at least part of the limiting groove 36 is in contact with the limiting protrusion 41 to limit the limiting member 3.

[0091] In the embodiment of the present application, since the limiting snap ring 4 and the limiting member 3 are respectively provided with one of the limiting protrusion 41 and the limiting groove 36, the limiting member 3 and the limiting snap ring 4 are easily installed in alignment, which is beneficial to simplifying the assembly process of the accumulator.

[0092] It should be noted that, in the drawings shown in the embodiments of the present application, only the limiting protrusion 41 is provided on the limiting collar 4, and correspondingly, the limiting member 3 is provided with the limiting groove 36. In actual applications, those skilled in the art may also provide the limiting protrusion 41 on the limiting member 3, and correspondingly, the limiting groove 36 is provided on the collar, and the embodiments of the present application do not limit this.

[0093] In practical applications, one or more limiting protrusions 41 and limiting grooves 36 may be provided, and the limiting protrusions 41 and limiting grooves 36 are in one-to-one correspondence. The embodiment of the present application does not limit the number of limiting protrusions 41 and limiting grooves 36, and those skilled in the art may adjust them as needed. It is understandable that during the inflation process of the first chamber 11, the air pressure acting on the first wall 15 of the limiting member 3 will be transmitted to the connection between the limiting member 3 and the limiting clamp 4. When multiple limiting protrusions 41 and limiting grooves 36 are provided, the force can be dispersed to each limiting protrusion 41 and limiting groove 36 to avoid excessive local force, which may easily cause damage to the connection of the limiting member 3. In some embodiments, such as Figure 5 , Figure 7 , Fig. 9 As shown, two limiting protrusions 41 and two limiting grooves 36 are respectively provided, and the two limiting protrusions 41 are distributed in a step-like manner, and the two limiting grooves 36 are also distributed in a step-like manner. One limiting protrusion 41 abuts against one limiting groove 36 correspondingly, thereby effectively dispersing the abutting force and avoiding local stress concentration at the connection between the limiting member 3 and the limiting clamp 4, which may cause damage to the limiting member 3.

[0094] In some optional embodiments of the present application, a limiting protrusion 41 is arranged on the limiting clamp 4, and the limiting protrusion 41 has a first non-abutment surface 412 and a first abutment surface 411 which are perpendicular to each other, and the first abutment surface 411 is perpendicular to the first direction X; a limiting groove 36 is arranged on the limiting member 3, specifically, the limiting groove 36 is arranged on the fourth wall 33 of the limiting member 3, and the limiting groove 36 has a second non-abutment surface 362 and a second abutment surface 361 which are perpendicular to each other, and the second abutment surface 361 is perpendicular to the first direction X; wherein the first non-abutment surface 412 and the second non-abutment surface 362 are spaced apart, and the first abutment surface 411 abuts against the second abutment surface 361, so that the limiting groove 36 abuts against the limiting protrusion 41.

[0095] In the embodiment of the present application, since the limiting protrusion 41 has a first non-abutting surface 412 and a first abutting surface 411, the limiting groove 36 has a second non-abutting surface 362 and a second abutting surface 361, wherein the first non-abutting surface 412 and the second non-abutting surface 362 are arranged at intervals, and the first abutting surface 411 and the second abutting surface 361 abut. In this way, on the one hand, the limiting of the limiting member 3 can be achieved through the abutment of the first abutting surface 411 and the second abutting surface 361. On the other hand, since the first non-abutting surface 412 and the second non-abutting surface 362 are arranged at intervals, that is, along the radial direction of the limiting snap ring 4, there is a gap between the limiting member 3 and the limiting snap ring 4, which not only allows gas to pass through, so as to deflate or inflate the first chamber 11; but also facilitates the installation of the limiting member 3, avoiding the problem that the limiting protrusion 41 and the limiting groove 36 cannot be aligned and abutted when there is a processing error.

[0096] Furthermore, at least one of the first abutting surface 411 and the second abutting surface 361 is provided with a second limiting rib 3611, and the second limiting rib 3611 is used to maintain a third gap between the first abutting surface 411 and the second abutting surface 361 to allow gas to pass through.

[0097] In the embodiment of the present application, since at least one of the first abutting surface 411 and the second abutting surface 361 is provided with a second limiting rib 3611, the second limiting rib 3611 can enable the first abutting surface 411 and the second abutting surface 361 to maintain a third gap to facilitate the passage of gas, thereby facilitating the improvement of the efficiency of deflating the first chamber 11, i.e., vacuuming and inflating.

[0098] It should be noted that the embodiment of the present application does not limit the value of the third gap, and those skilled in the art can adjust it according to actual needs. In addition, the second limiting rib 3611 can be set to one or more, and the embodiment of the present application does not limit the number of second limiting ribs 3611, and those skilled in the art can adjust it according to needs. It is understandable that if Figure 4 As shown, when a plurality of second limiting ribs 3611 are provided, the plurality of first limiting ribs 311 can be arranged at intervals along the extension direction of the limiting protrusion 41 and the limiting groove 36. In addition, in the drawings shown in the embodiment of the present application, only the case where the second limiting rib 3611 is provided on the second abutting surface 361 is shown. In practical applications, those skilled in the art can also provide the second limiting rib 3611 on the first abutting surface 411, or provide the second limiting rib 3611 on the first abutting surface 411 and the second abutting surface 361, respectively, and the second limiting rib 3611 provided on the first abutting surface 411 can be provided correspondingly or alternately with the second limiting rib 3611 provided on the second abutting surface 361. The embodiment of the present application does not limit this.

[0099] In some optional embodiments of the present application, at least a portion of the side of the limit member 3 close to the elastic diaphragm 2 extends toward the elastic diaphragm 2 to form an annular flange 37; a third limit rib 371 is provided on the side of the annular flange 37 close to the limit clamp 4, and the third limit rib 371 abuts against the limit clamp 4 so that the limit clamp 4 and the annular flange 37 maintain a fourth gap to allow gas to pass through.

[0100] In the embodiment of the present application, the annular flange 37 is provided, so that the volume of the limit block can be further adaptively changed, so that the volume of the first chamber 11 can be adaptively adjusted, which is beneficial to improving the versatility of the accumulator. Since the third limit rib 371 is provided on the side of the annular flange 37 close to the limit snap ring 4, and the third limit rib 371 is in contact with the limit snap ring 4, the limit snap ring 4 and the annular flange 37 can maintain a certain fourth gap to allow gas to pass through, which is beneficial to improving the efficiency of deflation, that is, vacuuming and inflation, of the first chamber 11.

[0101] It should be noted that the embodiment of the present application does not limit the value of the fourth gap, and those skilled in the art can adjust it according to actual needs. In addition, the third limiting rib 371 can be set as one or more. The embodiment of the present application does not limit the number of the third limiting rib 371, and those skilled in the art can adjust it according to needs. It can be understood that when multiple third limiting ribs 371 are set, multiple third limiting ribs 371 can be arranged at intervals along the circumference of the annular flange 37. In addition, during the use of the accumulator, the elastic diaphragm 2 will frequently contact the annular flange 37. In order to avoid the elastic diaphragm 2 from being scratched by the annular flange 37, in the embodiment of the present application, the side of the annular flange 37 close to the elastic diaphragm 2 is in an arc shape, thereby effectively protecting the elastic diaphragm 2 from damage, which is conducive to improving the service life of the elastic diaphragm 2.

[0102] In some optional embodiments of the present application, the limiting member 3 is provided with an airway structure, the airway structure is opposite to the inflation interface 13, and the airway structure is used for passing gas.

[0103] In practical applications, the accumulator needs to evacuate the first chamber 11 through the charging interface 13 before leaving the factory, and fill the first chamber 11 with gas of a certain pressure. In the embodiment of the present application, since an airway structure is provided, the airway structure is opposite to the charging interface 13, so that the first chamber 11 can be deflated smoothly, that is, vacuumized or inflated, and the influence of the limiter 3 on the vacuumization or inflation can be reduced.

[0104] In some optional embodiments of the present application, the limit member 3 includes a second wall 31 and a third wall 32 that are arranged away from each other along the first direction X, the third wall 32 is arranged close to the elastic diaphragm 2, and the third wall 32 and the elastic diaphragm 2 are enclosed to form a cavity; the airway structure includes a connecting port 34 and an airway 35; the connecting port 34 is arranged on the second wall 31, and the connecting port 34 is opposite to the inflation interface 13; the airway 35 includes two ends that are arranged away from each other, one end of the airway 35 is connected to the connecting port 34, and the other end of the airway 35 extends toward the direction of the elastic diaphragm 2 and is connected to the cavity.

[0105] In the embodiment of the present application, since the airway structure includes a connecting port 34 and an airway 35, wherein the connecting port 34 is arranged on the second wall 31 and is opposite to the inflation interface 13, one end of the airway 35 is in communication with the connecting port 34, and the other end extends toward the elastic diaphragm 2 and is in communication with the cavity enclosed by the third wall 32 and the elastic diaphragm 2. In this way, when the first chamber 11 is deflated, the gas in the cavity can flow through the airway 35, the connecting port 34 and flow to the inflation interface 13 in sequence to achieve vacuuming of the first chamber 11; when the first chamber 11 is inflated, the gas charged from the inflation interface 13 can flow through the connecting port 34, the airway 35 in sequence and flow into the cavity to achieve inflation of the first chamber 11.

[0106] It should be noted that one or more air passages 35 may be provided. The embodiment of the present application does not limit the number of air passages 35, and those skilled in the art may adjust the number as needed. It is understood that when multiple air passages 35 are provided, the deflation efficiency and inflation efficiency of the first chamber 11 may be improved. In some embodiments, multiple air passages 35 are provided, and the multiple air passages 35 are radially arranged in the circumference of the communication port 34.

[0107] The specific structures of two types of airway structures are provided below. It should be noted that the airway structure is not limited to the two types provided in the embodiments of the present application. Those skilled in the art may also set other types of airway structures with reference to the airway structures provided in the embodiments of the present application.

[0108] In one embodiment, if Figure 6 to Figure 7 As shown, the limit member 3 also includes a fourth wall 33, which is located between the second wall 31 and the third wall 32; the air duct 35 includes a first air duct 351 and a second air duct 352 that are interconnected; the first air duct 351 is opened on the second wall 31, and the end of the first air duct 351 that is away from the second air duct 352 is connected to the connecting port 34; the second air duct 352 is opened on the fourth wall 33, and the end of the second air duct 352 that is away from the first air duct 351 is connected to the cavity.

[0109] In the embodiment of the present application, since the first air channel 351 and the second air channel 352 are connected to each other, wherein the first air channel 351 is opened on the second wall 31, and the end of the first air channel 351 away from the second air channel 352 is connected to the connecting port 34, the second air channel 352 is opened on the fourth wall 33, and the end of the second air channel 352 away from the first air channel 351 is connected to the cavity, so that the first chamber 11 can be smoothly deflated, that is, vacuuming and inflating. It should be noted that the first air channel 351 and the second air channel 352 in the embodiment of the present application are essentially grooves opened on the surface of the limiter 3.

[0110] In another embodiment, Figures 8 to 9As shown, the air channel 35 includes a first air channel 351 and a second air channel 352 that are interconnected; the first air channel 351 is opened on the second wall 31, and the end of the first air channel 351 away from the second air channel 352 is connected to the connecting port 34; the second air channel 352 is arranged through the second wall 31 and the third wall 32, and the end of the second air channel 352 away from the first air channel 351 is connected to the cavity.

[0111] In the embodiment of the present application, since the interconnected first air channel 351 and the second air channel 352 are provided, wherein the first air channel 351 is provided on the second wall 31, and the end of the first air channel 351 away from the second air channel 352 is connected to the connecting port 34, the second air channel 352 is provided through the second wall 31 and the third wall 32, and the end of the second air channel 352 away from the first air channel 351 is connected to the cavity, so that the first chamber 11 can be smoothly deflated, that is, vacuuming and inflating. It should be noted that the first air channel 351 of the embodiment of the present application is essentially a groove provided on the surface of the stopper 3, and the second air channel 352 is essentially a through hole that penetrates the stopper 3.

[0112] In summary, the accumulator provided in the embodiment of the present application has at least the following advantages:

[0113] In the embodiment of the present application, the accumulator includes a housing, an elastic diaphragm and a stopper; the housing is provided with a chamber; the elastic diaphragm is provided in the chamber to separate the chamber into a first chamber and a second chamber distributed along a first direction, and under the deformation of the elastic diaphragm, the volume ratio of the first chamber and the second chamber changes; the housing is also provided with an inflation interface, which is connected to the first chamber; the stopper is provided between the inflation interface and the elastic diaphragm, and the stopper is used to limit the elastic diaphragm from contacting the inflation interface during deformation. Since a stopper is provided between the inflation interface and the elastic diaphragm, that is, in the first chamber. In this way, on the one hand, the elastic diaphragm can be limited from contacting the inflation interface during deformation, thereby effectively avoiding the indentation or even crack on the surface of the elastic diaphragm caused by multiple contacts between the elastic diaphragm and the inflation interface, which is beneficial to improve the service life of the elastic diaphragm. On the other hand, the inflation volume of the first chamber can be adaptively adjusted by changing the volume of the stopper, which is beneficial to improve the versatility of the accumulator.

[0114] The embodiment of the present application also provides a vehicle, the vehicle comprising an accumulator according to any of the above embodiments. Specifically, the accumulator comprises a hydraulic interface 14, the hydraulic interface 14 is communicated with the second chamber 12, and the hydraulic interface 14 is used to connect to the hydraulic system of the vehicle, so as to alleviate the pressure fluctuation of the hydraulic system.

[0115] It should be noted that in the embodiment of the present application, the structure of the accumulator is the same as the structure of the accumulator described in any of the above embodiments, and its beneficial effects are also similar, which will not be described in detail here.

[0116] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0117] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. An accumulator, characterized in that: The accumulator comprises a housing, an elastic diaphragm and a limiter; The housing is provided with a chamber; The elastic diaphragm is disposed in the chamber and divides the chamber into a first chamber and a second chamber distributed along a first direction, and under the deformation of the elastic diaphragm, the volume ratio of the first chamber and the second chamber changes; The housing is further provided with an air charging interface, and the air charging interface is connected to the first chamber; The limiting member is disposed between the inflation port and the elastic diaphragm, and is used to limit the elastic diaphragm from contacting the inflation port during deformation.

2. The accumulator according to claim 1, characterized in that The limiting member is fixedly connected to the housing.

3. The accumulator according to claim 2, characterized in that The shell has a first wall, the inflation interface is arranged on the first wall, and the limiting member is fixedly connected to the first wall.

4. The accumulator according to claim 3, characterized in that A first gap for gas to pass through is defined between the limiting member and the first wall.

5. The accumulator according to claim 4, characterized in that A first limiting convex rib is disposed on one side of the limiting member close to the first wall, and the first limiting convex rib abuts against the first wall to form the first gap between the first wall and the limiting member.

6. The accumulator according to claim 5, characterized in that The accumulator further comprises a limit clamp ring, which is fixedly connected to the housing and is located between the limit member and the elastic diaphragm; At least a portion of the limiting member abuts against the limiting clamp ring, so that the limiting member is fixedly connected to the shell.

7. The accumulator according to claim 1, characterized in that The limiting member is movably connected to the shell.

8. The accumulator according to claim 7, characterized in that The housing has a first wall, and the inflation interface is arranged on the first wall; The limiting member is movably connected to the housing; The first chamber has an inflated state and a deflated state. In the inflated state, the limiter maintains a second gap with the first wall to allow gas to pass through. In the deflated state, the limiter abuts against the first wall.

9. The accumulator according to claim 8, characterized in that The accumulator further comprises a limit clamp ring, which is fixedly connected to the housing and is located between the limit member and the elastic diaphragm; In the inflated state, the limit member abuts against the limit snap ring, and in the deflated state, the limit member releases the abutment against the limit snap ring.

10. The accumulator according to claim 6 or 9, characterized in that: A side of the limiting clamp close to the limiting member is provided with one of a limiting protrusion or a limiting groove; The limiting member is provided with the limiting protrusion or the limiting groove on one side close to the limiting clamp ring, and at least part of the limiting groove abuts against the limiting protrusion to limit the limiting member.

11. The accumulator according to claim 10, characterized in that The limiting protrusion is arranged on the limiting clamp ring, and the limiting protrusion has a first non-contact surface and a first contact surface which are perpendicular to each other, and the first contact surface is perpendicular to the first direction; The limiting groove is arranged on the limiting member, and the limiting groove has a second non-abutting surface and a second abutting surface which are perpendicular to each other, and the second abutting surface is perpendicular to the first direction; The first non-abutting surface and the second non-abutting surface are spaced apart from each other, and the first abutting surface abuts against the second abutting surface, so that the limiting groove abuts against the limiting protrusion.

12. The accumulator according to claim 11, characterized in that At least one of the first abutting surface and the second abutting surface is provided with a second limiting convex rib, and the second limiting convex rib is used to maintain a third gap between the first abutting surface and the second abutting surface to allow gas to pass through.

13. The accumulator according to claim 6 or 9, characterized in that: At least a portion of the stopper close to the elastic diaphragm extends toward the elastic diaphragm to form an annular flange; A third limiting rib is arranged on one side of the annular flange close to the limiting clamp ring, and the third limiting rib abuts against the limiting clamp ring so that the limiting clamp ring and the annular flange maintain a fourth gap for passing gas.

14. The accumulator according to claim 13, characterized in that The annular flange is arc-shaped on one side close to the elastic diaphragm.

15. The accumulator according to claim 2 or 7, characterized in that: The limiting component is provided with an airway structure, the airway structure is opposite to the inflation interface, and the airway structure is used for passing gas.

16. The accumulator according to claim 15, characterized in that The limiting member comprises a second wall and a third wall which are arranged away from each other along a first direction, the third wall is arranged close to the elastic diaphragm, and the third wall and the elastic diaphragm enclose a cavity; The airway structure comprises a communication port and an airway; The communication port is disposed on the second wall, and the communication port is opposite to the inflation port; The air channel comprises two ends which are arranged away from each other, one end of the air channel is communicated with the communication port, and the other end of the air channel extends toward the elastic diaphragm and is communicated with the cavity.

17. The accumulator according to claim 16, characterized in that A plurality of the air passages are provided, and the plurality of the air passages are radially arranged in a circumferential direction of the communication port.

18. The accumulator according to claim 16, characterized in that The limiting member further includes a fourth wall, and the fourth wall is located between the second wall and the third wall; The airway comprises a first airway and a second airway that are interconnected; The first air channel is opened in the second wall, and one end of the first air channel away from the second air channel is connected to the communication port; The second air channel is opened in the fourth wall, and one end of the second air channel away from the first air channel is communicated with the cavity.

19. The accumulator according to claim 16, characterized in that The airway comprises a first airway and a second airway that are interconnected; The first air channel is opened in the second wall, and one end of the first air channel away from the second air channel is connected to the communication port; The second air channel is arranged to penetrate the second wall and the third wall, and one end of the second air channel away from the first air channel is communicated with the cavity.

20. The accumulator according to claim 1, characterized in that The limiting member includes a third wall, the third wall is arranged close to the elastic diaphragm, and the third wall is in an arc shape.

21. A vehicle, characterized in that: The vehicle comprises the accumulator according to any one of claims 1-20.

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