Air spring leather bag buckling and pressing assembly system and air spring formed by air spring leather bag buckling and pressing assembly system

Abstract

The air spring leather bag buckling and pressing assembly system comprises an air leather bag, an upper cover seat and a piston body, the upper end of the air leather bag is provided with a first connecting end, the end of the upper cover seat is provided with a buckling and pressing sealing end A, and the outer wall of the buckling and pressing sealing end A is of an arc-shaped structure with the two high sides and the low middle. The first connecting end of the air leather bag sleeves the buckling and pressing sealing end A in a matched manner and is subjected to hole shrinkage buckling and sealing through a sealing pressing ring A positioned outside the first connecting end; the lower end of the air leather bag is provided with a second connecting end. The upper end and the lower end of the air leather bag respectively form an arc-shaped reducing buckling-pressing sealing structure, so that the sealing performance of the two ends of the air leather bag is enhanced, and the product performance of the air spring is improved; the triangular groove teeth A and the triangular groove teeth B are in an inclined staggered occlusion state, and the triangular groove teeth B and the triangular groove teeth B are in an inclined staggered occlusion state, so that a self-adaptive adjustment effect is achieved, and the problems of air leakage, falling off and the like are effectively avoided.

Description

Technical Field

[0001] The utility model relates to the field of air springs for vehicle shock absorption, in particular to an air spring bladder buckling assembly system and an air spring composed thereof. Background Art

[0002] An air spring is a shock-absorbing device that utilizes the elasticity of air, filled with compressed air within a retractable, sealed container. Its operating principle is to fill a bladder with compressed air, using the reaction force generated by the compressed air to support the vehicle body and reduce shock. Due to its adjustable stiffness and load-bearing capacity, excellent vibration damping, and lightweight design, it has gained widespread application. An air spring consists of a bladder, an upper cover, and a piston. The upper and lower ends of the bladder are sealed to the upper cover and piston, respectively. Traditional air springs are prone to air leakage or detachment between the upper end of the bladder and the upper cover, and between the bladder and the piston, respectively. This affects the performance of the air spring, leading to serious quality issues and high scrap rates during production. Therefore, there is a need to optimize the existing air spring sealing structure and design a sealing structure that can improve the sealing performance of the upper and lower ends of the air spring bladder, making it easier to manufacture and providing excellent sealing performance, thereby further improving the product performance of the air spring. Utility Model Content

[0003] The purpose of the present invention is to solve the technical problems pointed out by the background technology, and to provide an air spring bladder buckle assembly system and the air spring composed thereof, wherein the first connection end of the air bladder and the buckle sealing end A of the upper cover seat are both in a mutually matched arc-shaped structure with high sides and low middle, and at the same time, the sealing pressure ring A is used to reduce the diameter of the buckle sealing, and the first connection end, the buckle sealing end A, and the sealing pressure ring A constitute a new set of sealing structures at the upper end of the air bladder, thereby enhancing the sealing performance of the upper end of the air bladder, and having the advantages of convenient production and manufacturing, high stability, and strong sealing performance; the second connection end of the air bladder and the buckle sealing end B of the piston body are both in a mutually matched arc-shaped structure with high sides and low middle, and at the same time, the sealing pressure ring B is used to reduce the diameter of the buckle sealing, and the second connection end, the buckle sealing end B, and the sealing pressure ring B constitute a new sealing structure at the lower end of the air bladder, thereby enhancing the sealing performance of the lower end of the air bladder. The air spring of the present invention has better sealing performance at the upper and lower ends of the bladder, thereby improving the product performance of the air spring.

[0004] The purpose of this utility model is achieved through the following technical solutions:

[0005] An air spring bladder buckling assembly system includes an air bladder, an upper cover seat and a piston body. The upper end of the air bladder has a first connecting end, and the end of the upper cover seat has a buckling sealing end A that is cooperatively connected to the first connecting end. The outer wall of the buckling sealing end A is an arc-shaped structure with high two sides and low in the middle. The first connecting end of the air bladder is fitted onto the buckling sealing end A and is buckled and sealed by a sealing pressure ring A located outside the first connecting end; the lower end of the air bladder has a second connecting end, and the end of the piston body has a buckling sealing end B that is sealingly connected to the second connecting end.

[0006] In order to better realize the present invention, the outer side wall of the buckled sealing end A has an engaging tooth A, and the side wall of the first connection end close to the buckled sealing end A has an engaging tooth A that engages with the engaging tooth A, and the sealing pressure ring A is tightly fitted on the outside of the first connection end of the air bag.

[0007] Preferably, the engaging teeth A are composed of a plurality of triangular groove teeth A arranged in sequence, and the engaging mating teeth A are composed of a plurality of triangular groove mating teeth A arranged in sequence, and the engaging teeth A and the engaging mating teeth A are both in a "V" arc structure as a whole.

[0008] Preferably, the outer side wall of the buckled sealing end B has an engaging tooth B, the second connecting end has a U-shaped groove and a sealing pressure ring B is installed in the U-shaped groove, and the side wall of the second connecting end close to the buckled sealing end B has an engaging tooth B that engages with the engaging tooth B.

[0009] Preferably, after the second connecting end of the air bag is sealed and engaged with the pressing and sealing end B of the piston body, the sealing pressure ring B adopts a reduced diameter pressing and sealing method.

[0010] Preferably, the outer protrusion of the buckled sealing end A has a limiting plate that cooperates with the end side of the first connecting end, and the end side of the first connecting end has a sealing gasket A located between the limiting plate and the sealing pressure ring A.

[0011] Preferably, the piston body has a step surface at the position of the buckling sealing end B, and the second connecting end side has a sealing gasket B located between the step surface and the sealing pressure ring B.

[0012] An air spring composed of an air spring bladder buckling assembly system comprises an air spring bladder buckling assembly system and an air nozzle arranged on an upper cover seat in a sealed communication, wherein the inner cavity of the upper cover seat is communicated with the inner cavity of the air bladder.

[0013] Preferably, a plastic plug is installed at the center of the top end of the upper cover seat, and the outer wall of the upper cover seat is also covered with a rubber pad.

[0014] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0015] (1) The first connection end of the air bladder of the utility model and the buckle sealing end A of the upper cover seat are both in a mutually matched arc-shaped structure with high sides and low middle. At the same time, the sealing pressure ring A is used to reduce the diameter and buckle the seal. The first connection end, the buckle sealing end A, and the sealing pressure ring A constitute a new set of sealing structures at the upper end of the air bladder, which enhances the sealing performance of the upper end of the air bladder and has the advantages of convenient production and manufacturing, high stability, and strong sealing performance. The second connection end of the air bladder and the buckle sealing end B of the piston body are both in a mutually matched arc-shaped structure with high sides and low middle. At the same time, the sealing pressure ring B is used to reduce the diameter and buckle the seal. The second connection end, the buckle sealing end B, and the sealing pressure ring B constitute a new sealing structure at the lower end of the air bladder, which enhances the sealing performance of the lower end of the air bladder. The sealing performance of the upper and lower ends of the air bladder of the utility model air spring is better, which improves the product performance of the air spring.

[0016] (2) The triangular groove teeth A and triangular groove teeth A, as well as the triangular groove teeth B and triangular groove teeth B of the utility model are in an inclined and staggered bite state, which effectively reduces the influence of radial expansion on the upper and lower ends of the air bag; when radial expansion occurs, the inclined and staggered bite will improve the sealing performance of the upper and lower ends of the air bag, and the bag will be restored and buffered after the expansion ends, playing an adaptive adjustment role, effectively avoiding problems such as leakage and falling off. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural diagram of the sealing ring A of the air spring bladder buckling assembly system of the utility model before it is reduced in diameter and buckled;

[0018] Figure 2 for Figure 1 A partial enlarged schematic diagram of the middle sealing pressure ring A position;

[0019] Figure 3 for Figure 1 A partial enlarged schematic diagram of the middle upper cover seat;

[0020] Figure 4 for Figure 2 Schematic diagram of the structure without the sealing ring installed;

[0021] Figure 5 This is a structural diagram of the air spring bladder buckling assembly system of the utility model after the sealing pressure ring A is reduced in diameter and buckled;

[0022] Figure 6 for Figure 5 A partial enlarged schematic diagram of the middle sealing pressure ring A position.

[0023] The names corresponding to the reference numerals in the accompanying drawings are:

[0024] 1-Upper cover seat, 2-Button sealing end A, 21-Limiting plate, 3-Triangular groove tooth A, 4-Plastic plug, 5-Rubber pad, 6-Air bladder, 61-First connecting end, 611-Triangular groove matching tooth A, 612-Sealing gasket A, 62-Second connecting end, 621-Sealing gasket B, 7-Piston body, 71-Button sealing end B, 8-Sealing pressure ring A, 9-Air nozzle, 10-Sealing pressure ring B. DETAILED DESCRIPTION

[0025] The present invention is further described in detail below in conjunction with the embodiments:

[0026] Example

[0027] like Figures 1 to 6 As shown, an air spring bladder buckling assembly system includes an air bladder 6, an upper cover seat 1 and a piston body 7. The upper end of the air bladder 6 has a first connecting end 61, and the end of the upper cover seat 1 has a buckling sealing end A2 that is connected to the first connecting end 61. The outer wall of the buckling sealing end A2 has an arc-shaped structure with high sides and low middle (see Figure 4 The edge of the buckled sealing end A2 is not a straight line, but a concave arc structure with high ends and low middle. The arc structure can be similar to a "V" shape, and the angle of the "V" shape can be large or small. Figure 4 For example, the "V" angle of the arc structure is relatively large, about 170 degrees, which is selected based on the dual considerations of convenient production and installation and excellent sealing performance. The first connecting end 61 of the air bag 6 is fitted on the buckled sealing end A2 and is buckled and sealed by the sealing pressure ring A8 located outside the first connecting end 61; Figure 2 As shown, the first connecting end 61 of the air bag 6 is first fitted onto the buckled sealing end A2, and then the sealing pressure ring A8 is fitted onto the outside of the first connecting end 61. The sealing pressure ring A8 is subjected to a diameter reduction and buckling treatment using a diameter reduction tool, so that the sealing pressure ring A8 changes from a straight line to a "V" shape, allowing the first connecting end 61 and the buckled sealing end A2 to achieve a tight buckling and sealing, thereby enhancing the sealing structural performance between the end of the air bag 6 and the upper cover seat 1.

[0028] In a further preferred embodiment, the outer side wall of the buckled sealing end A2 has an engaging tooth A, and the side wall of the first connecting end 61 close to the buckled sealing end A2 has an engaging tooth A that engages with the engaging tooth A, and the sealing ring A8 is tightly fitted on the outside of the first connecting end 61 of the air bag 6. Figure 4 As shown, preferably, the engaging teeth A are composed of a plurality of triangular groove teeth A3 in sequence, as shown in FIG. Figure 3 As shown, the engaging teeth A are composed of a number of triangular groove engaging teeth A611 in sequence, and the engaging teeth A and the engaging teeth A are all in a "V" arc structure as a whole; in order to further seal and prevent falling off, as shown in FIG. Figure 2As shown, the triangular groove teeth A3 of the engaging teeth A of the present invention are all tilted upward, and the triangular groove matching teeth A611 of the engaging matching teeth A are all tilted downward. The triangular groove teeth A3 and the triangular groove matching teeth A611 are in a tilted and staggered bite state, and at the same time, the sealing pressure ring A8 tightly buckles and seals on the outer side of the whole and provides sealing compression prestress. When the air spring bladder buckling assembly system is used as an air spring, the air inside the air bladder 6 will pull the first connecting end 61 downward. This tilted and staggered bite will make the bite tighter and promote better sealing, thereby effectively ensuring its sealing performance. The sealing pressure ring A8 of the present invention adopts V-shaped buckling, and the bladder has better sealing after buckling; the radial strength of the buckle structure with a "V"-shaped cross-section is greatly improved, which improves the buckle's ability to resist radial deformation when the air spring is working, reduces the risk of the buckle deforming outward due to the internal pressure of the air bladder during operation, and solves the problems of bladder leakage and bladder falling off.

[0029] The lower end of the air bag 6 has a second connecting end 62, and the end of the piston body 7 has a buckle sealing end B71 that is sealed and connected to the second connecting end 62. In some embodiments, the outer wall of the buckle sealing end B71 has an engaging tooth B, the second connecting end 62 has a U-shaped groove and a sealing pressure ring B10 is installed in the U-shaped groove, and the side wall of the second connecting end 62 near the buckle sealing end B71 has an engaging tooth B that engages with the engaging tooth B. Figure 5 As shown, preferably, the engaging tooth B is composed of several triangular groove teeth B in sequence, and the engaging mating tooth B is composed of several triangular groove mating teeth B in sequence, and the engaging tooth B and the engaging mating tooth B are both in a "V" arc structure as a whole.

[0030] In some embodiments, after the second connecting end 62 of the air bag 6 is sealed and engaged with the pressing and sealing end B71 of the piston body 7, the sealing ring B10 adopts a reduced diameter pressing and sealing method (such as Figure 5As shown, the second connecting end 62 of the air bag 6 has an inverted U-shaped groove, and the sealing pressure ring B10 is correspondingly located in the inverted U-shaped groove of the second connecting end 62. First, the sealing pressure ring B10 is installed in the inverted U-shaped groove of the second connecting end 62 of the air bag 6. Then, the second connecting end 62 with the sealing pressure ring B10 is fitted onto the buckled sealing end A2. The sealing pressure ring B10 is reduced and buckled using a reducing tool, so that the sealing pressure ring B10 changes from a straight line to a "V" shape, allowing the second connecting end 62 and the buckled sealing end B71 to achieve a tight buckled seal, thereby enhancing the sealing structure performance between the end of the air bag 6 and the piston body 7. Due to the "V"-shaped buckling structure, the air bag has better sealing performance after buckling; the radial strength of the buckle structure with a "V"-shaped cross-section is greatly improved, which improves the buckle's ability to resist radial deformation when the air spring is working, reduces the risk of the buckle deforming outward due to the internal pressure of the air bag during operation, and solves the problems of air leakage and air bag falling off. In order to further seal and prevent falling off, the triangular groove teeth B of the present invention are also in an inclined staggered bite state with the triangular groove teeth B. The sealing pressure ring A8 and the sealing pressure ring B10 are both in the shape of a circular ring.

[0031] In some preferred embodiments, the outer protrusion of the buckling sealing end A2 has a limiting plate 21 that cooperates with the end side of the first connecting end 61, such as Figure 2 As shown, the first connection end 61 has a sealing gasket A612 located between the limiting plate 21 and the sealing pressure ring A8. The sealing gasket A612 seals and fills the gap between the limiting plate 21 and the sealing pressure ring A8, effectively improving the air tightness at the position of the first connection end 61.

[0032] In some preferred embodiments, Figure 1 As shown, the piston body 7 has a step surface at the buckling sealing end B71, and the second connecting end 62 has a sealing gasket B621 located between the step surface and the sealing pressure ring B10. The sealing gasket B621 effectively improves the air tightness at the second connecting end 62.

[0033] An air spring consisting of an air spring bladder buckling assembly system includes the air spring bladder buckling assembly system and an air nozzle 9 provided on an upper cover 1 for sealed communication with the air spring bladder buckling assembly system. The inner cavity of the upper cover 1 is communicated with the inner cavity of the air bladder 6. Preferably, a plastic plug 4 is also installed at the center of the top of the upper cover 1, and the outer wall of the upper cover 1 is also covered with a rubber pad 5. The plastic plug 4 and the rubber pad 5 are both assembly parts of the top of the air spring, serving as flexible assembly and protection for the top of the air spring.

[0034] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An air spring bladder buckling assembly system, characterized by: The invention comprises an air bag (6), an upper cover seat (1) and a piston body (7), wherein the upper end of the air bag (6) has a first connecting end (61), the end of the upper cover seat (1) has a pressing and sealing end A (2) which is connected to the first connecting end (61), and the outer wall of the pressing and sealing end A (2) is an arc-shaped structure with high sides and low middle. The first connecting end (61) of the air bag (6) is fitted on the pressing and sealing end A (2) and is pressed and sealed by a sealing pressure ring A (8) located outside the first connecting end (61); the lower end of the air bag (6) has a second connecting end (62), and the end of the piston body (7) has a pressing and sealing end B (71) which is sealed to the second connecting end (62).

2. The air spring bladder buckling assembly system according to claim 1, characterized in that: The outer side wall of the buckled sealing end A (2) has an engaging tooth A, and the side wall of the first connecting end (61) close to the buckled sealing end A (2) has an engaging tooth A that engages with the engaging tooth A. The sealing pressure ring A (8) is tightly fitted on the outside of the first connecting end (61) of the air bag (6).

3. The air spring bladder buckling assembly system according to claim 2, characterized in that: The engaging teeth A are composed of a plurality of triangular groove teeth A (3) which are continuously arranged in sequence, and the engaging matching teeth A are composed of a plurality of triangular groove matching teeth A (611) which are continuously arranged in sequence. The engaging teeth A and the engaging matching teeth A are both in a V-shaped arc structure as a whole.

4. The air spring bladder buckling assembly system according to claim 1, characterized in that: The outer side wall of the buckled sealing end B (71) has an engaging tooth B, the second connecting end (62) has a U-shaped groove and a sealing pressure ring B (10) is installed in the U-shaped groove, and the side wall of the second connecting end (62) close to the buckled sealing end B (71) has an engaging tooth B that engages with the engaging tooth B.

5. The air spring bladder buckling assembly system according to claim 4, characterized in that: After the second connecting end (62) of the air bag (6) is sealed and engaged with the pressing and sealing end B (71) of the piston body (7), the sealing pressure ring B (10) adopts a reduced diameter pressing and sealing method.

6. The air spring bladder buckling assembly system according to claim 1, characterized in that: The outer protrusion of the buckled sealing end A (2) has a limiting plate (21) that cooperates with the end side of the first connecting end (61), and the end side of the first connecting end (61) has a sealing gasket A (612) located between the limiting plate (21) and the sealing pressure ring A (8).

7. The air spring bladder buckling assembly system according to claim 4, characterized in that: The piston body (7) has a stepped surface at the position of the buckling sealing end B (71), and the second connecting end (62) has a sealing gasket B (621) located between the stepped surface and the sealing pressure ring B (10).

8. An air spring comprising the air spring bladder buckling assembly system according to any one of claims 1 to 7, characterized in that: It also includes an air nozzle (9) which is arranged on the upper cover seat (1) in a sealed communication, and the inner cavity of the upper cover seat (1) is communicated with the inner cavity of the air bag (6).

9. The air spring according to claim 8, characterized in that: A plastic plug (4) is installed at the center of the top end of the upper cover seat (1), and the outer wall of the upper cover seat (1) is also covered with a rubber pad (5).

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