Novel modularized detachable air spring

Abstract

The invention discloses a novel modularized detachable air spring which comprises an upper air chamber assembly, a bag skin and a fluctuating piston, and further comprises an upper air chamber connecting module detachably connected with the bottom of the upper air chamber assembly, and a lower air chamber connecting module detachably connected with the bottom of the lower air chamber assembly. The piston connecting module is detachably connected with the upper portion of the fluctuating piston, the upper end of the bag skin is fixed to the upper air chamber connecting module, and the lower end of the bag skin is fixed to the piston connecting module. Thus, when the air spring needs to be replaced, the shock absorber is firstly disassembled, then the piston connecting module is disassembled from the upper portion of the fluctuating piston, and then the upper air chamber connecting module is disassembled from the bottom of the upper air chamber assembly, so that disassembly of the air spring can be simply and rapidly completed. And finally, the upper air chamber assembly, the capsule skin and the piston connecting module which are installed and connected are replaced, replacement of the capsule skin is completed after installation, the replacement efficiency and the replacement convenience are improved, and each module can be independently detached and replaced. The problems that an existing air spring structure is difficult to maintain, and the bag skin replacement cost is high are solved.

Description

Technical Field

[0001] The invention relates to the technical field of vehicle air springs, and in particular to a novel modular detachable air spring. Background Art

[0002] With the development of the automobile industry, air springs, as important parts of automobiles, have also developed rapidly. At present, the pillar assembly air spring in the mainstream solution is composed of a spring bag and a shock absorber. During the long-term use of the air spring, the bladder skin in the air spring will age during the long-term use of the car, and in severe cases, it will be damaged, affecting the safety of use. Therefore, the bladder skin needs to be replaced, but the upper and lower ends of the bladder skin are currently connected to the upper air chamber assembly and the undulating piston respectively. The connection method is to set the upper and lower pressure rings respectively, and then the equipment is squeezed and the pressure rings are deformed to complete the fixation of the upper and lower outer walls of the bladder skin. When the bladder skin needs to be replaced, the air spring needs to be disassembled as a whole. During the process of disassembling and reinstalling the air spring, the seals of the air spring need to be replaced, which increases the cost of use. At the same time, during disassembly, the upper and lower pressure rings can only be damaged by forceful disassembly, so that the bladder skin can be removed from the upper air chamber assembly and the undulating piston. Due to the limited operating space, the removal process is troublesome and laborious, and special tooling and equipment are required for removal, which not only increases the cost of use, but also reduces the maintenance efficiency. Summary of the invention

[0003] In order to solve the technical problems existing in the background technology, the present invention proposes a novel modular detachable air spring.

[0004] The present invention provides a novel modular detachable air spring, comprising an upper air chamber assembly, a bladder skin and a heave piston, and further comprising:

[0005] An upper air chamber connection module, detachably connected to the bottom of the upper air chamber assembly;

[0006] The piston connection module is detachably connected to the upper part of the undulating piston, the upper end of the bladder skin is fixed to the upper air chamber connection module, and the lower end is fixed to the piston connection module.

[0007] Preferably, the upper end of the bladder skin is fixedly connected to the outer wall of the upper air chamber connecting module through an upper pressure ring, and the lower end is fixedly connected to the outer wall of the piston connecting module through a lower pressure ring.

[0008] Preferably, a thread groove is formed on the bottom inner wall of the upper air chamber assembly, and a clamping block is provided on the outer wall of the upper air chamber connecting module. The clamping block is provided with an external thread, and the clamping block is threadably connected to the thread groove.

[0009] Preferably, a positioning groove is provided at the bottom of the upper air chamber assembly, and a limiting surface is provided at the upper end of the upper air chamber connecting module, and the limiting surface is in close contact with the inner wall of the positioning groove.

[0010] Preferably, a clamping block is provided on the outer wall of the upper air chamber connecting module, and an insertion groove and a limiting groove are provided on the bottom inner wall of the upper air chamber assembly along its circumference; when connected, the clamping block is aligned with the insertion groove, moves through the insertion groove to the inside of the limiting groove, and then the upper air chamber assembly is rotated to cause the clamping block to be misaligned with the insertion groove and limited inside the limiting groove.

[0011] Preferably, a sealing ring I is placed inside the limiting groove, and the clamping block abuts against the sealing ring I when inserted into the limiting groove.

[0012] Preferably, an oil seal ring is further provided in the limiting groove below the sealing ring I.

[0013] Preferably, a fixing groove is further provided on the bottom wall of the limiting groove, and when the clamping block rotates inside the limiting groove and moves to the fixed groove position, the clamping block is pushed into the fixed groove by the tension of the sealing ring I.

[0014] Preferably, a connecting groove is provided at the lower part of the piston connecting module, and a clamping groove is provided at the upper end of the undulating piston, and the connecting groove is clamped and connected with the clamping groove.

[0015] Preferably, a sealing ring II is disposed inside the connecting groove.

[0016] In summary, the present invention has the following beneficial effects: when the bladder skin needs to be replaced, the shock absorber is first removed, and then the piston connection module is removed from the upper part of the undulating piston. Because the piston connection module and the undulating piston are connected in a snap-on manner, the two can be easily disassembled, and then the upper air chamber connection module is removed from the bottom of the upper air chamber assembly. The bladder part can be simply and quickly removed from the upper air chamber assembly and the undulating piston, completing the disassembly of the air spring, and finally replacing the new upper air chamber assembly, bladder skin and piston connection module that have been installed and connected. After installation, the replacement of the bladder skin is completed, improving the efficiency and convenience of replacement. The present invention uses modular design and assembly-type assembly, and each module can be disassembled and replaced separately. It solves the problems of the current air spring's cumbersome disassembly and assembly process, the cost of replacing the seal during the disassembly process, the difficulty of structural maintenance, and the high cost of replacing the bladder skin.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A structural diagram of a novel modular detachable air spring according to an embodiment of the present invention;

[0019] Figure 2 is a schematic structural diagram of an upper air chamber assembly according to an embodiment of the present invention;

[0020] Figure 3 It is a schematic diagram of the connection structure between the upper air chamber connection module, the bladder skin, the piston connection module and the undulating piston according to an embodiment of the present invention;

[0021] Figure 4 It is a schematic diagram of the connection structure between the upper air chamber connection module, the bladder skin and the piston connection module according to an embodiment of the present invention;

[0022] Figure 5 It is a structural schematic diagram of an upper air chamber connection module according to an embodiment of the present invention;

[0023] Figure 6 This is a schematic structural diagram of a piston connection module according to an embodiment of the present invention;

[0024] Figure 7 It is a structural schematic diagram of the connection between the piston connection module and the undulating piston according to an embodiment of the present invention;

[0025] Figure 8 It is a structural schematic diagram of an ups and downs piston according to an embodiment of the present invention;

[0026] Fig. 9 for Figure 1 A in the enlarged view;

[0027] Fig.10 for Figure 2 The enlarged view of point B in the figure;

[0028] Fig.11 It is a flow chart of the limiting of the block on the outer wall of the upper air chamber connection module and the insertion groove and the limiting groove on the bottom inner wall of the upper air chamber assembly according to an embodiment of the present invention;

[0029] Fig.12 for Fig.10 The enlarged image at point I in the middle;

[0030] Fig.13 for Fig.10 Enlarged view of point II in the middle.

[0031] In the figure:

[0032] 1. Upper air chamber assembly, 101. Limiting groove, 102. Positioning groove, 103. Insertion groove, 104. Sealing ring I; 105. Oil seal ring;

[0033] 2. Cystic skin;

[0034] 3. Guide sleeve;

[0035] 4. Up and down piston, 401. Card slot;

[0036] 5. Piston connection module, 501. connection groove, 502. sealing ring II;

[0037] 6. Upper air chamber connection module, 601. clamping block, 602. limiting surface, 603. sealing gasket;

[0038] 7. Upper pressure ring; 8. Lower pressure ring; 9. Support ring; 10. Buffer block. DETAILED DESCRIPTION

[0039] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar symbols throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0040] like Figure 1-13 As shown, a novel modular detachable air spring proposed in this embodiment includes an upper air chamber assembly 1, a bladder skin 2 and an undulating piston 4, and also includes:

[0041] An upper air chamber connecting module 6 is detachably connected to the bottom of the upper air chamber assembly 1;

[0042] The piston connection module 5 is detachably connected to the upper part of the undulating piston 4 , and the upper end of the bladder skin 2 is fixed to the upper air chamber connection module 6 , and the lower end is fixed to the piston connection module 5 .

[0043] In this way, when the bladder skin 2 needs to be replaced, the shock absorber is first removed, and then the piston connection module 5 is removed from the upper part of the undulating piston 4, and then the upper air chamber connection module 6 is removed from the bottom of the upper air chamber assembly 1, so that the air spring can be disassembled simply and quickly, and finally the upper air chamber assembly 1, bladder skin 2 and piston connection module 5 that have been installed and connected are replaced, and the bladder skin 2 is replaced after installation, thereby improving the efficiency and convenience of replacement. The present invention adopts modular design and assembly-type assembly, and each module can be disassembled and replaced separately. The problem of the difficulty in maintaining the current air spring structure and the high cost of replacing the bladder skin is solved.

[0044] Furthermore, if Figure 1 and Figure 3 As shown, the upper end of the bladder skin 2 is fixedly connected to the outer wall of the upper air chamber connecting module 6 through an upper pressure ring 7, and the lower end is fixedly connected to the outer wall of the piston connecting module 5 through a lower pressure ring 8.

[0045] The detachable structure between the upper air connection module 6 and the upper air chamber assembly 1 includes the following embodiments:

[0046] Embodiment 1:

[0047] A thread groove is provided on the bottom inner wall of the upper air chamber assembly 1 , and a clamping block is provided on the outer wall of the upper air chamber connecting module 6 . The clamping block is provided with an external thread, and the clamping block is threadedly connected to the thread groove.

[0048] Embodiment 2:

[0049] like Figure 2 and Figure 5 As shown, a positioning groove 102 is provided at the bottom of the upper air chamber assembly 1, and a limiting surface 602 is provided at the upper end of the upper air chamber connecting module 6, and the limiting surface 602 is closely connected to the inner wall of the positioning groove 102. Furthermore, a sealing gasket 603 can be sleeved on the limiting surface 602 to improve the sealing effect.

[0050] Embodiment three:

[0051] like Fig.11 As shown, the outer wall of the upper air chamber connecting module 6 is provided with a clamping block 601, and the bottom inner wall of the upper air chamber assembly 1 is provided with an insertion groove 103 and a limiting groove 101 along its circumference; when connecting, the clamping block 601 is aligned with the insertion groove 103, and the clamping block 601 is moved upward to pass through the insertion groove 103 and move to the inside of the limiting groove 101, and then the upper air chamber assembly 1 is rotated 90°, so that the clamping block 601 is misaligned with the insertion groove 103 (the clamping block 601 is disengaged from the position of the insertion groove 103), and is limited inside the limiting groove 101, thereby completing the connection between the upper air chamber assembly 1 and the upper air chamber connecting module 6.

[0052] Furthermore, if Fig.12 and Fig.13 As shown, before installation, a sealing ring Ⅰ104 is placed inside the limiting groove 101, and when the clamping block 601 is inserted into the limiting groove 101, it abuts against the sealing ring Ⅰ104. While providing a sealing effect, the elastic tension of the sealing ring Ⅰ104 can also abut against the clamping block 601 to provide an extrusion force, making the clamping block 601 more stable inside the limiting groove 101 and avoiding displacement of the clamping block 601, and then the piston connecting module 5 is clamped and connected with the upper end of the undulating piston 4.

[0053] At the same time, before installation, an oil seal ring 105 is also provided in the limit groove 101 below the sealing ring Ⅰ104. When the clamping block 601 moves from the insertion groove 103 into the limit groove 101, it first abuts against the oil seal ring 105, and the oil seal ring 105 drives the sealing ring Ⅰ104 to move upward and shrink as a whole, avoiding the gap caused by the point contact between the clamping block 601 and the sealing ring Ⅰ104, so that the sealing ring Ⅰ104 and the oil seal ring 105 are sealed in an overall plane and flush, thereby improving the sealing effect.

[0054] Furthermore, a fixing groove is also opened on the bottom wall of the limiting groove 101. During the rotation of the clamping block 601 inside the limiting groove 101, the clamping block 601 moves to the position of the fixing groove, and then the clamping block 601 is pushed into the fixing groove by the tension of the sealing ring Ⅰ104, thereby further improving the stability of the connection between the upper air chamber assembly 1 and the upper air chamber connecting module 6.

[0055] In this embodiment, Figure 6 and Figure 8 As shown, a connecting groove 501 is provided at the lower part of the piston connecting module 5 , and a clamping groove 401 is provided at the upper end of the undulating piston 4 , and the connecting groove 501 is clamped and connected with the clamping groove 401 .

[0056] Furthermore, a sealing ring II 502 is disposed inside the connection groove 501 . After installation, the sealing ring II 502 is in contact with the inner wall of the clamping groove 401 for sealing, thereby improving the sealing effect.

[0057] In summary, when the bladder skin 2 needs to be replaced, the shock absorber is first removed, and then the undulating piston 4 is pulled to disengage the undulating piston 4 from the position of the clamping groove 401 on the piston connection module 5, and the disassembly of the undulating piston 4 is completed. Then, by rotating the upper air chamber connection module 6, the clamping block 601 is aligned with the insertion groove 103, and then the clamping block 601 is moved out from the inside of the insertion groove 103 and removed from the bottom of the upper air chamber assembly 1, the air spring can be disassembled simply and quickly, and finally the new upper air chamber assembly 1, bladder skin 2 and piston connection module 5 that have been installed and connected are replaced to complete the replacement of the bladder skin 2, thereby improving the efficiency and convenience of replacement. The positions of the upper air chamber assembly 1 and the undulating piston 4 that are respectively connected to the bladder skin 2 are split and modularized, and then divided into the upper air chamber assembly 1 and the upper air chamber connection module 6, and the overall external shape and structure do not change. The same principle is also used for the undulating piston. The undulating piston is divided into a piston and a piston connection module, and the overall external shape and structure after installation do not change.

[0058] It should be noted that the air spring in this embodiment also includes a guide sleeve 3, which is sleeved on the outer wall of the bladder skin 2. During installation, it is first installed inside the bladder skin 2 through the support ring 9 to fix the guide sleeve 3 sleeved on the outer wall of the bladder skin 2, and then the upper end of the bladder skin 2 is sleeved on the outer wall of the upper air chamber connecting module 6 and fixedly connected through the upper pressure ring 7, and then the bottom of the bladder skin 2 is sleeved on the outer wall of the piston connecting module 5 and fixedly connected through the lower pressure ring 8. After the upper air chamber connecting module 6 and the piston connecting module 5 are installed with the bladder skin 2, the upper air chamber connecting module 6 is clamped with the upper air chamber assembly 1, and the piston connecting module 5 is clamped with the undulating piston 4.

[0059] A new air spring is assembled by modules to reduce structural design and save development costs. The bottom of the upper air chamber assembly 1 is detachably connected to the bladder skin 2 through the upper air chamber connecting module 6, and the up-and-down piston 4 is detachably connected to the bladder skin 2 through the piston connecting module 5, thereby improving the convenience of maintenance and reducing the cost of use.

[0060] It should be noted that the air spring in this embodiment also includes a buffer block 10. Specifically, the buffer block 10 can be removed and replaced separately. The modules are sealed and connected by seals, which is suitable for single-chamber and multi-chamber air springs.

[0061] 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 limiting the present invention.

[0062] In addition, the terms "first" and "second" 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" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0063] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; 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, unless otherwise clearly defined. 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] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0065] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A novel modular detachable air spring, comprising an upper air chamber assembly, a bladder skin and a heave piston, characterized in that: Also includes: An upper air chamber connection module, detachably connected to the bottom of the upper air chamber assembly; The piston connection module is detachably connected to the upper part of the undulating piston, the upper end of the bladder skin is fixed to the upper air chamber connection module, and the lower end is fixed to the piston connection module.

2. The novel modular detachable air spring according to claim 1 is characterized in that: The upper end of the bladder skin is fixedly connected to the outer wall of the upper air chamber connecting module through an upper pressure ring, and the lower end is fixedly connected to the outer wall of the piston connecting module through a lower pressure ring.

3. The novel modular detachable air spring according to claim 2 is characterized in that: A thread groove is formed on the bottom inner wall of the upper air chamber assembly, and a clamping block is provided on the outer wall of the upper air chamber connection module. The clamping block is provided with an external thread, and the clamping block is threadedly connected to the thread groove.

4. The novel modular detachable air spring according to claim 2 is characterized in that: A positioning groove is provided at the bottom of the upper air chamber assembly, and a limiting surface is provided at the upper end of the upper air chamber connecting module, and the limiting surface is in contact with the inner wall of the positioning groove.

5. The novel modular detachable air spring according to claim 2 is characterized in that: A clamping block is provided on the outer wall of the upper air chamber connection module, and an insertion groove and a limiting groove are opened on the bottom inner wall of the upper air chamber assembly along its circumference; when connected, the clamping block is aligned with the insertion groove, passes through the insertion groove and moves into the limiting groove, and then the upper air chamber assembly is rotated to make the clamping block misaligned with the insertion groove and limited inside the limiting groove.

6. The novel modular detachable air spring according to claim 5, characterized in that: A sealing ring I is placed inside the limiting groove, and the clamping block abuts against the sealing ring I when inserted into the limiting groove.

7. The novel modular detachable air spring according to claim 6, characterized in that: An oil seal ring is also provided in the limiting groove below the sealing ring I.

8. The novel modular detachable air spring according to claim 7, characterized in that: A fixing groove is also provided on the bottom wall of the limiting groove. When the clamping block rotates inside the limiting groove and moves to the fixing groove position, the clamping block is pushed into the fixing groove by the tension of the sealing ring I.

9. The novel modular detachable air spring according to claim 2, characterized in that: A connecting groove is provided at the lower part of the piston connecting module, and a clamping groove is provided at the upper end of the undulating piston, and the connecting groove is clamped and connected with the clamping groove.

10. The novel modular detachable air spring according to claim 9, characterized in that: A sealing ring II is arranged inside the connecting groove.

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