Reinforced composite membrane type air spring piston

Abstract

The invention discloses a reinforced composite membrane type air spring piston which comprises a piston body, an annular installation part used for being connected with an air bag is arranged on the piston body, a fastening ring used for being matched with the annular installation part is arranged on the annular installation part, and a space used for clamping and fixing the air bag is formed between the fastening ring and the annular installation part. The section of the annular installation part is conical, the inner circle of the fastening ring is provided with a ring body inner conical face matched with the fastening ring, and the piston body is provided with a plurality of locking pieces used for being matched with the fastening ring to drive the fastening ring to move in the clamping direction opposite to the annular installation part. The air bag is clamped and fixed through cooperation of the fastening ring and the annular mounting part, the fastening ring is fixed through the locking piece, fixing is more convenient, mounting and dismounting are convenient, the air bag can be dismounted and separated from the piston, maintenance is convenient, the later maintenance cost is reduced, all accessories can be independently replaced when the air spring is damaged, overall replacement is not needed, and the use cost is reduced.

Description

Technical Field

[0001] This invention relates to the technical field of air springs, and in particular to reinforced composite diaphragm air spring pistons. Background Technology

[0002] In existing technologies, air springs, as key components of air suspension systems, play a crucial role in the comfort and safety of the suspension system due to their dynamic characteristics. An air spring typically consists of an air bladder and a piston. The piston is connected to the end of the air bladder and is used to fix and seal it. The piston generally has an annular mounting groove structure corresponding to the air bladder. The end of the air bladder is secured to the annular mounting groove structure by a pressure ring. Once installed, the pressure ring structure is fixed and generally cannot be disassembled, making it difficult to separate the air bladder and piston during later use. This makes maintenance difficult, and once damaged, it cannot be easily disassembled and replaced, resulting in high operating costs. Summary of the Invention

[0003] The purpose of this invention is to solve the problems in the prior art by proposing a reinforced composite diaphragm air spring piston. The air bladder is clamped and fixed by the cooperation of the fastening ring and the annular mounting part, which facilitates installation and disassembly. The air bladder can be detached from the piston for easy maintenance.

[0004] To achieve the above objectives, the present invention proposes a reinforced composite diaphragm air spring piston, comprising a piston body, wherein the piston body is provided with an annular mounting portion for connecting with an airbag, the annular mounting portion is provided with a fastening ring for cooperating therewith, and a space for clamping and fixing the airbag is provided between the fastening ring and the annular mounting portion, the annular mounting portion has a conical cross-section, the inner ring of the fastening ring is provided with a matching inner conical surface, and the piston body is provided with a plurality of locking elements for cooperating with the fastening ring to drive the fastening ring to move in a clamping direction relative to the annular mounting portion.

[0005] Preferably, the cross-section of the annular mounting portion is a cone shape with a diameter that gradually increases from top to bottom, and the shape of the cone surface inside the ring is adapted to the annular mounting portion.

[0006] Preferably, the annular mounting portion is provided with several annular anti-slip ridges.

[0007] Preferably, the lower side of the annular mounting part is provided with a guide positioning part, and the bottom of the inner ring of the top fastening ring is provided with a guide inner ring that is sleeved and connected to the annular positioning part.

[0008] Preferably, the annular positioning part and the guide inner ring are respectively provided with a plurality of mutually meshing positioning protrusions and positioning slots.

[0009] Preferably, the piston body has an outer shell that is detachably connected to it on its outer wall. The top of the outer shell extends to cover the lower part of the fastening ring, and the outer wall of the outer shell has an airbag contact surface for cooperating with the airbag.

[0010] Preferably, the top of the outer casing has a conical surface that gradually tapers from bottom to top, and the top of the conical surface extends to cover the lower part of the fastening ring.

[0011] Preferably, the locking element is a plurality of locking bolts arranged in a ring array on the piston body, and the locking bolts pass through the piston body and are threadedly connected to the fastening ring.

[0012] Preferably, the piston body has an axially protruding buffer block on its top, and the buffer block is made of an elastic material.

[0013] Preferably, the piston body and the buffer block are respectively provided with a matching insertion block and an insertion slot, and the insertion block and the insertion slot are connected by insertion.

[0014] The beneficial effects of this invention on a reinforced composite diaphragm air spring piston are as follows: This invention uses a fastening ring and an annular mounting part to clamp and fix the airbag. The fastening ring is fixed by a locking component, which makes fixing more convenient and facilitates installation and disassembly. The airbag can be detached from the piston, which facilitates maintenance and reduces later maintenance costs. When the air spring is damaged, each part can be replaced individually without replacing the whole spring, thus reducing the cost of use.

[0015] The features and advantages of the present invention will be described in detail through embodiments and in conjunction with the accompanying drawings. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the main structure of a reinforced composite diaphragm air spring piston according to the present invention.

[0017] Figure 2 This is a bottom view schematic diagram of a reinforced composite diaphragm air spring piston according to the present invention.

[0018] Figure 3 yes Figure 2 Schematic diagram of the cross-sectional structure of AA.

[0019] Figure 4 yes Figure 2 Schematic diagram of the cross-sectional structure of BB.

[0020] Figure 5 This is a schematic diagram of the cross-sectional structure of the fastening ring.

[0021] Figure 6 This is a schematic diagram of the structure when the present application is used with an airbag.

[0022] In the figure: 1-piston body, 2-fastening ring, 3-locking component, 4-outer shell, 5-buffer block, 11-ring mounting part, 12-guide positioning part, 13-insertion slot, 21-inner conical surface of the ring, 22-guide inner ring, 41-airbag contact surface, 42-shell conical surface, 51-insertion block, 111-ring anti-slip ridge, 121-positioning protrusion, 221-positioning slot. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. However, it should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of the invention. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of the invention.

[0024] In the description of this invention, it should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to or indirectly connected to the other element.

[0025] In the description of this invention, it should be noted that the terms "center," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified. "Several" means one or more, unless otherwise explicitly specified.

[0026] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0027] Example 1:

[0028] See Figures 1-6 The present invention discloses a reinforced composite diaphragm air spring piston, comprising a piston body 1, which is cylindrical in shape. An annular mounting part 11 for connecting with an airbag is provided at the top of the piston body 1. One end of the airbag is fitted onto the annular mounting part 11 to achieve a tight connection with the piston body 1.

[0029] Correspondingly, the annular mounting portion 11 is provided with a fastening ring 2 for cooperating with it. A space for clamping and fixing the airbag is provided between the fastening ring 2 and the annular mounting portion 11. The cross-section of the annular mounting portion 11 is a tapered shape with a diameter gradually increasing from top to bottom. The inner ring of the fastening ring 2 is provided with a matching inner conical surface 21. The piston body 1 is provided with several locking members 3 for cooperating with the fastening ring 2 to drive the fastening ring 2 downwards, so that it can cooperate with the annular mounting portion 11 to clamp the airbag. In this embodiment, the airbag is clamped and fixed by the fastening ring 2 cooperating with the annular mounting portion 11. The fastening ring 2 is fixed by the locking members 3, making it easy to disassemble and fix later, facilitating installation and disassembly, simplifying maintenance, reducing later maintenance costs, and allowing individual parts to be replaced when the air spring is damaged, eliminating the need for overall replacement and reducing operating costs.

[0030] The locking element 3 consists of several locking bolts arranged in a ring array on the piston body 1. These locking bolts pass through the piston body 1 and are threadedly connected to the fastening ring 2. During tightening, a cross-shaped or star-shaped sequential method should be used to gradually tighten each locking bolt, thereby ensuring that the fastening ring 2 is subjected to uniform force in all directions and guaranteeing a sealing effect.

[0031] The annular mounting part 11 is provided with several annular anti-slip ridges 111, and the corresponding airbag opening position is also provided with a ridge-groove structure corresponding to the annular anti-slip ridges 111, which increases the friction when the airbag is connected to the annular mounting part 11, making the connection more secure and preventing the two from loosening.

[0032] Specifically, the lower side of the annular mounting portion 11 is provided with a cylindrical guide positioning portion 12, and the bottom of the inner ring of the top fastening ring 2 is provided with a guide inner ring 22 that is sleeved and connected to the annular positioning portion 12. The guide positioning portion 12 and the guide inner ring 22 are sleeved and connected, which can play a directional guiding role for the fastening ring 2, so that the top fastening ring 2 keeps moving along the axial direction of the piston body 1, and avoids the fastening ring 2 from being misaligned and affecting the sealing connection.

[0033] Furthermore, the annular positioning part 12 and the guide inner ring 22 are respectively provided with a plurality of mutually meshing positioning protrusions 121 and positioning slots 221. This enables the directional connection of the top fastening ring 2, facilitating the correspondence between the locking member 3 and the connection hole on the fastening ring 2.

[0034] See Figure 1 A buffer block 5 with an axially protruding shape is provided on the top of the piston body 1. The buffer block 5 is made of an elastic material, such as rubber. The piston body 1 and the buffer block 5 are respectively provided with a mating insertion block 51 and an insertion slot 12. The insertion block 51 and the insertion slot 12 are inserted and connected. The buffer block 5 can abut against the mounting block on the top of the airbag when the airbag fails, providing emergency protection and preventing further damage.

[0035] Example 2:

[0036] See Figure 1 , Figure 3 Based on Embodiment 1, the piston body 1 is further fitted with a detachably connected outer shell 4. The top of the outer shell 4 extends to cover the lower part of the fastening ring 2. The outer wall of the outer shell 4 is provided with an airbag contact surface 41 for cooperating with the airbag. When the airbag is folded and deformed, it comes into contact with the airbag contact surface 41. The airbag contact surface 41 determines the stiffness of the air spring. The top of the outer shell 4 covers the lower part of the fastening ring 2, which can cover the bottom seam of the fastening ring 2 and prevent the seam from damaging the airbag.

[0037] The outer casing 4 has a tapered surface 42 that gradually tapers from bottom to top, with the top of the tapered surface 42 extending to cover the lower part of the fastening ring 2. The tapered surface 42 serves as a transition surface.

[0038] All standard parts used in this application can be purchased from the market. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the existing technology. The internal components of the electric slide rail, cylinder, welding machine, electric telescopic rod and controller all adopt conventional models in the existing technology, and their internal structure belongs to the existing technology structure. Workers can complete the normal operation of them according to the existing technical manual. In addition, the circuit connection adopts the conventional connection method in the existing technology, and will not be described in detail here.

[0039] It should be noted that although the above embodiments have been described herein, this does not limit the scope of patent protection for this invention. Therefore, any changes and modifications made to the embodiments described herein based on the innovative concept of this invention, or equivalent structural or procedural transformations made using the description and drawings of this invention, directly or indirectly applying the above technical solutions to other related technical fields, are all included within the scope of protection of this invention.

Claims

1. A reinforced composite diaphragm air spring piston, comprising a piston body (1), wherein the piston body (1) is provided with an annular mounting portion (11) for connection with an air bladder, characterized in that: The annular mounting part (11) is provided with a fastening ring (2) for cooperating with it. There is a space between the fastening ring (2) and the annular mounting part (11) for clamping and fixing the airbag. The annular mounting part (11) has a tapered cross section. The inner ring of the fastening ring (2) is provided with an inner conical surface (21) that is adapted to it. The piston body (1) is provided with a plurality of locking members (3) for cooperating with the fastening ring (2) to drive the fastening ring (2) to move in a clamping direction relative to the annular mounting part (11).

2. The reinforced composite diaphragm air spring piston as described in claim 1, characterized in that: The cross-section of the annular mounting part (11) is a cone shape with the diameter gradually increasing from top to bottom, and the shape of the cone surface (21) inside the ring is adapted to the annular mounting part (11).

3. The reinforced composite diaphragm air spring piston as described in claim 1, characterized in that: The annular mounting part (11) is provided with several annular anti-slip ridges (111).

4. The reinforced composite diaphragm air spring piston as described in claim 1, characterized in that: The lower side of the annular mounting part (11) is provided with a guide positioning part (12), and the bottom of the inner ring of the top fastening ring (2) is provided with a guide inner ring (22) that is sleeved and connected to the annular positioning part (12).

5. The reinforced composite diaphragm air spring piston as described in claim 4, characterized in that: The annular positioning part (12) and the guide inner ring (22) are respectively provided with a plurality of mutually meshing positioning protrusions (121) and positioning slots (221).

6. The reinforced composite diaphragm air spring piston as described in claim 5, characterized in that: The piston body (1) is fitted with an outer shell (4) which is detachably connected to it. The top of the outer shell (4) extends to cover the lower part of the fastening ring (2). The outer wall of the outer shell (4) is provided with an airbag contact surface (41) for cooperating with the airbag.

7. The reinforced composite diaphragm air spring piston as described in claim 6, characterized in that: The outer shell (4) has a shell cone (42) at the top that gradually decreases from bottom to top, and the top of the shell cone (42) extends to cover the lower part of the fastening ring (2).

8. The reinforced composite diaphragm air spring piston as described in claim 1, characterized in that: The locking element (3) consists of several locking bolts arranged in a ring array on the piston body (1). The locking bolts pass through the piston body (1) and are threadedly connected to the fastening ring (2).

9. The reinforced composite diaphragm air spring piston as described in claim 1, characterized in that: The piston body (1) has an axially protruding buffer block (5) on its top, and the buffer block (5) is made of elastic material.

10. The reinforced composite diaphragm air spring piston as described in claim 9, characterized in that: The piston body (1) and the buffer block (5) are respectively provided with a plug-in block (51) and a plug-in slot (13) that cooperate with each other. The plug-in block (51) and the plug-in slot (13) are plugged in and connected.

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