Air spring bag skin buckling and pressing structure

Abstract

The utility model provides an air spring bag skin buckling and pressing structure which comprises a buckling and pressing supporting seat, a bag skin and a buckling and pressing base which are connected with the buckling and pressing supporting seat, an outer cylinder arranged outside the bag skin, and a plurality of buckling and pressing tools arranged outside the outer cylinder and connected with the outer cylinder. The bag skin is uniformly distributed outside the outer cylinder, a first part of the bag skin sleeves the buckling supporting seat, the buckling supporting seat is provided with a telescopic structure, a part of the telescopic structure is arranged in the buckling base, the telescopic structure can move back and forth relative to the buckling supporting seat, the telescopic structure is sleeved with a buckling ring, and the buckling ring is arranged in the buckling base. The buckling tool can control the buckling ring to shrink, and therefore the buckling ring can enable the telescopic structure to move towards the interior of the buckling supporting base. When the air spring bag skin buckling and pressing structure is used for buckling and pressing, different buckling and pressing depths of the bag skin can be achieved through the shrinking degree of the buckling and pressing ring, and therefore the buckling and pressing amount of the bag skin can be adjusted according to actual requirements and cannot be affected by other factors.

Description

Technical Field

[0001] The utility model belongs to the technical field of air springs, and in particular relates to a bag skin buckling structure of an air spring. Background Art

[0002] As a pillar industry of the national economy, the automobile industry is a sunrise industry and is being vigorously developed. Chassis suspension is an indispensable component for both traditional gasoline-powered vehicles and new energy electric vehicles. With the upgrading of people's consumption, domestic car manufacturers are developing high-end vehicles. Air springs are a signature configuration of high-end vehicles. Compared with traditional rigid coil springs, air springs have the advantages of light weight, variable stiffness, and the ability to be raised and lowered, which greatly improves the comfort of drivers and passengers.

[0003] Air springs are generally made of a crimping device and an upper cover to seal the bladder skin. During the research and development stage of air springs, the main performance requirements for air springs are air tightness and explosion resistance, both of which put forward higher requirements for the crimping of the bladder skin. The crimping structure and crimping amount have always been the core parameters of air spring manufacturers. Especially in the design stage, a structure with adjustable crimping amount is needed to verify the optimal parameters for the final mass production, so that it will not fall off during use and explosion. In addition, the crimping ring will tighten after the bladder skin is crimped, making internal disassembly difficult.

[0004] Therefore, it is urgent to develop a simple air spring bag skin buckling structure with adjustable buckling amount. Utility Model Content

[0005] In order to solve the above technical problems, the purpose of the utility model is to provide an air spring bag skin buckling structure, which can achieve different buckling depths and the buckling amount can be adjusted according to actual needs.

[0006] In order to achieve the above utility model purpose, the technical solution adopted by the utility model is as follows:

[0007] The utility model provides an air spring bladder skin buckling structure, comprising a buckling support seat, a bladder skin and a buckling base connected to the buckling support seat, an outer cylinder arranged outside the bladder skin, and a plurality of buckling tooling arranged outside the outer cylinder and connected to the outer cylinder, wherein the plurality of buckling toolings are symmetrical with the cross-sectional center of the outer cylinder as a point of symmetry and are evenly distributed on the outside of the outer cylinder, a first portion of the bladder skin is sleeved on the buckling support seat, a telescopic structure is arranged on the buckling support seat, a portion of the telescopic structure is arranged inside the buckling support seat, the telescopic structure can move back and forth relative to the buckling support seat, a buckling ring is sleeved on the telescopic structure, and the buckling tooling can control the buckling ring to shrink, so that the buckling ring can move the telescopic structure toward the inside of the buckling support seat.

[0008] In the utility model, when the crimping device acts on the crimping tool, the crimping tool applies pressure to the bladder skin, so that the bladder skin applies pressure to the crimping ring, causing the crimping ring to shrink, and then the crimping ring causes the telescopic structure to move toward the inside of the crimping support seat, so that the bladder skin is bent to achieve the crimping of the bladder skin. When the bladder skin crimping structure of the air spring is crimped, the shrinkage degree of the crimping ring can achieve different crimping depths of the bladder skin, so the crimping amount of the bladder skin can be adjusted according to actual needs and will not be affected by other factors.

[0009] Furthermore, the buckling support seat includes a base and a handle, the base is accommodated in the buckling base, and the handle extends out of the buckling base through a hole at the bottom of the buckling base.

[0010] Furthermore, the base includes a platform and a base body arranged on the platform, the handle and the base body are relatively arranged on the upper and lower sides of the platform, and the base body includes a first main body and a second main body arranged on the first main body.

[0011] Furthermore, the length of the cross section of the base is smaller than the length of the cross section of the inner cavity of the pressing base, and the length of the cross section of the base is larger than the length of the cross section of the base body, and a gap is formed between the first main body and the inner cavity wall of the pressing base, and the first part of the bag skin is arranged in the gap, and the front end of the first part is in conflict with the top of the base.

[0012] By such arrangement, when the pressing tool bends the bag skin, the first part of the bag skin can move toward the seat, and then the first part of the bag skin can form more bends in the gap, thereby increasing the pressing amount of the bag skin.

[0013] Furthermore, at least three telescopic structures are arranged on the second body, and the at least three telescopic structures are evenly distributed on the side surface of the second body with the center of the cross section of the second body as a symmetric point.

[0014] Furthermore, the telescopic structure includes a sliding component and a spring, the top end of the sliding component presses against the inner side of the buckling ring, the spring is accommodated in the internal channel of the second body, and part of the sliding component is arranged in the internal channel and contacts the spring.

[0015] Through such an arrangement, the present crimping structure can match crimping rings of different sizes with a compression spring, and thus is suitable for crimping rings of different inner diameters. When the crimping device acts on the crimping tooling, the crimping tooling applies pressure to the bladder skin, thereby causing the bladder skin to apply pressure toward the crimping ring, shrinking the crimping ring, and pressing the top end of the sliding component, causing the sliding component to compress the spring inward, thereby achieving bending of the bladder skin and completing the crimping of the bladder skin.

[0016] Furthermore, at least three undercut structures are provided on the sliding component, and the undercut structure includes a first section and a second section, the front end of the first section is interference fitted in the internal channel of the second body, and the second section is in contact with the spring, thereby preventing the sliding component from being ejected by the spring.

[0017] Furthermore, the sliding component is made of a flexible material such as rubber, elastomer or plastic, so that the front end of the first section can be conveniently interference-fitted into the internal channel of the second body.

[0018] Furthermore, the first inner side surface of the pressing tool is an inwardly concave triangular structure.

[0019] By such arrangement, the bag skin can also form more bends when buckling, thereby increasing the buckling amount of the bag skin.

[0020] Furthermore, the contact portion between the front end portion of the outer tube and the bladder skin is provided with anti-slip grooves, and the top end of the front end portion of the outer tube is accommodated in a cavity formed by the buckling base and the bladder skin.

[0021] Compared with the prior art, the utility model has achieved beneficial technical effects:

[0022] (1) The air spring bladder skin buckling structure provided by the utility model can match buckling rings of different sizes with a reliable compression spring, and thus can be used for buckling rings of different inner diameters. When the buckling device acts on the buckling tool, the buckling tool applies pressure to the bladder skin, so that the bladder skin applies pressure toward the buckling ring, thereby shrinking the buckling ring, and then the buckling ring moves the telescopic structure toward the inside of the buckling support seat, so that the bladder skin can bend to form a buckle. When the air spring bladder skin buckling structure is buckled, the degree of shrinkage of the buckling ring can achieve different buckling depths of the bladder skin, so the buckling amount of the bladder skin can be adjusted according to actual needs and will not be affected by other factors.

[0023] (2) The air spring bag skin buckling structure provided by the utility model is not difficult to remove after buckling like the previous structure. After buckling, it can be easily taken out by prying the buckling support seat to complete the buckling. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a top view of the utility model;

[0025] Figure 2 for Figure 1 Cross-sectional view of AA in the middle;

[0026] Figure 3 It is the overall picture of the buckling support seat;

[0027] Figure 4 It is a front view of the buckling support seat;

[0028] Figure 5 for Figure 4 Cross-section of the middle BB;

[0029] Figure 6 is an enlarged schematic diagram of the telescopic structure;

[0030] Figure 7 This is the effect diagram of the utility model after buckling.

[0031] The technical features indicated by the reference numerals are as follows:

[0032] 1. buckle support seat; 11. base; 12. handle; 111. seat platform; 112. seat body; 1121. first body; 1122. second body; 1123. internal passage;

[0033] 2. cystic skin; 21. the first part of the cystic skin;

[0034] 3. Buckle the base; 31. Gap;

[0035] 4. Snap ring;

[0036] 5. outer tube; 51. front end of the outer tube; 52. anti-slip pattern; 511. top of the front end of the outer tube;

[0037] 6. Buckling tool; 61. First inner side;

[0038] 7. telescopic structure; 71. sliding member; 72. spring; 711. undercut structure; 7111. first section; 7112. second section;

[0039] 8. Chamber. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical solutions and advantages of the utility model more clearly understood, the utility model is further described in detail below in conjunction with embodiments, but the scope of protection claimed in the utility model is not limited to the following specific embodiments.

[0041] Example 1

[0042] like Figure 1-6As shown, the present embodiment provides an air spring bladder skin buckling structure, comprising a buckling support seat 1, a bladder skin 2 and a buckling base 3 connected to the buckling support seat 1, an outer tube 5 arranged outside the bladder skin 2, and a plurality of buckling fixtures 6 arranged outside the outer tube 5 and connected to the outer tube 5. There are eight of the multiple buckling fixtures 6 in the present embodiment, and the eight buckling fixtures 6 are symmetrically and evenly distributed on the outside of the outer tube 5 with the center of the cross section of the outer tube 5 as a symmetrical point. The first part 21 of the bladder skin 2 is sleeved on the buckling support seat 1, and a telescopic structure 7 is arranged on the buckling support seat 1. A part of the telescopic structure 7 is arranged inside the buckling support seat 1, and the telescopic structure 7 can move back and forth relative to the buckling support seat 1. A buckling ring 4 is sleeved on the telescopic structure 7, and the buckling fixture 6 can control the buckling ring 4 to shrink, so that the buckling ring 4 can move the telescopic structure 7 toward the inside of the buckling support seat 1.

[0043] In this embodiment, when the crimping device acts on the crimping tool 6, the crimping tool 6 applies pressure to the bladder skin 2, so that the bladder skin 2 applies pressure to the crimping ring 4, so that the crimping ring 4 shrinks, and then the crimping ring 4 moves the telescopic structure 7 toward the inside of the crimping support seat 1, so that the bladder skin 2 can bend to form a crimp. When the bladder skin crimping structure of the air spring is crimped, the shrinkage degree of the crimping ring 4 can achieve different crimping depths of the bladder skin, so the crimping amount of the bladder skin can be adjusted according to actual needs and will not be affected by other factors.

[0044] Furthermore, the buckling support seat 1 includes a base 11 and a handle 12, the base 11 is accommodated in the buckling base 3, and the handle 12 extends out of the buckling base 3 through a hole (not marked in the figure) at the bottom of the buckling base 3.

[0045] Furthermore, the base 11 includes a base 111 and a base body 112 arranged on the base 111, and the handle 12 and the base body 112 are relatively arranged above and below the base 111. In this embodiment, the base 111, the base body 112, the handle 12 and the inner cavity of the buckling base 3 are all cylindrical. The length (diameter) of the cross section of the base 111 is smaller than the length (diameter) of the cross section of the inner cavity of the pressing base 3, the width (diameter) of the cross section of the base 111 is larger than the width (diameter) of the cross section of the base body 112, the width (diameter) of the cross section of the base body 112 is larger than the width (diameter) of the cross section of the handle 12, the base body 112 includes a first main body 1121 and a second main body 1122 arranged on the first main body 1121, the first main body 1121 forms a gap 31 with the inner cavity wall of the pressing base 3, the first part 21 of the bladder skin 2 is arranged in the gap 31, and the front end of the first part 21 is in contact with the top of the base 111, so that when the pressing tool 6 bends the bladder skin 2, the first part 21 of the bladder skin 2 can move toward the direction of the base 111, and then the first part 21 of the bladder skin 2 can form more bends in the gap 31, thereby increasing the pressing amount of the bladder skin 2.

[0046] Furthermore, the first inner side surface 61 of the buckling tool 6 is an inwardly concave triangular structure, so that when buckling, the bag skin 2 can also form more bends, thereby increasing the buckling amount of the bag skin 2.

[0047] Furthermore, at least three telescopic structures 7 are provided on the second main body 1122, wherein the number of the telescopic structures 7 can be set to match the shape of the retaining ring 4. Since the retaining ring 4 in the present embodiment is circular in shape, there are eight telescopic structures 7 in the present embodiment. The eight telescopic structures 7 are evenly distributed on the side of the second main body 1122 with the center of the cross section of the second main body 1122 as the symmetry point.

[0048] Furthermore, the telescopic structure 7 includes a sliding component 71 and a spring 72. The top of the sliding component 71 presses against the inner side of the buckling ring 4, so that the buckling structure can reliably compress the spring 72 to match the buckling rings 4 of different sizes, and thus is suitable for buckling rings 4 of different inner diameters. The spring 72 is accommodated in the internal channel 1123 of the second body 1122. A portion of the sliding component 71 is arranged in the internal channel 1123 and contacts the spring 72. The sliding component 71 is made of rubber, elastomer, plastic or other flexible material. In this embodiment, it is rubber. At least three undercut structures 711 are arranged on the sliding component 71. The undercut structure 711 includes a first section 7111 and a second section 7112. The front end of the first section 7111 is interference-fitted on the internal channel 1123 of the second body 1122. The second section 7112 contacts the spring 72, so that the sliding component 71 can be prevented from being pushed out by the spring 72.

[0049] In this embodiment, when the crimping device acts on the crimping tool 6, the crimping tool 6 applies pressure to the bag skin 2, so that the bag skin 2 applies pressure toward the crimping ring 4, causing the crimping ring 4 to shrink. The crimping ring 4 presses the top of the sliding component 71, causing the sliding component 71 to compress the spring inward, thereby realizing the bending of the bag skin 2 and completing the crimping of the bag skin 2.

[0050] Furthermore, the contact portion between the front end portion 51 of the outer tube 5 and the bladder skin 2 is provided with anti-slip grooves 52, and the top end 511 of the front end portion 51 of the outer tube 5 is accommodated in the buckling base 3, the bladder skin 2, and the cavity 8 formed by buckling.

[0051] The assembly method of the air spring bag skin buckling structure provided in this embodiment includes the following steps:

[0052] S1. Install the buckling ring 4 onto the buckling support seat 1. When installing, the buckling ring 4 needs to be pressed in with force, and the sliding component 71 pushes against the spring 72 to move inward, and finally the limited installation is completed;

[0053] S2, sleeve the first part of the bag cover 2 on the seat body 112, and the front end of the first part 21 contacts the upper surface of the seat platform 111;

[0054] S3. The base 11 is accommodated in the buckling base 3, and the handle 12 extends out of the buckling base 3 through the hole at the bottom of the buckling base 3, and the outer tube 5 is covered on the bladder skin 2, and then the top end 511 of the front end portion 51 of the outer tube 5 is accommodated and set in the buckling base 3, the bladder skin 2, and the chamber 8 formed by buckling.

[0055] When the air spring bladder skin buckling structure provided in this embodiment is buckled on a buckling machine, when the buckling machine acts on the buckling tool 6, the buckling tool 6 applies pressure to the outer tube 5 and the bladder skin 2, so that the bladder skin 2 applies pressure to the buckling ring 4, so that the buckling ring 4 shrinks, and then the buckling ring 4 makes the spring 72 of the telescopic structure 7 move toward the inside of the buckling support seat 1, so that the bladder skin 2 can be bent to form a buckling, and its buckling effect is as follows: Figure 7 As shown, the amount of buckling can be calculated by H1 and H2 in the figure.

[0056] The air spring bag skin buckling structure provided in this embodiment is not difficult to take out after buckling, unlike the previous structure. After buckling, it can be easily taken out by prying the buckling support seat 1 to complete the buckling.

[0057] According to the disclosure and teaching of the above specification, the technicians in the field of the utility model can also change and modify the above implementation. Therefore, the utility model is not limited to the specific implementation methods disclosed and described above, and some modifications and changes to the utility model should also fall within the scope of protection of the claims of the utility model. In addition, although some specific terms are used in this specification, these terms are only for the convenience of description and do not constitute any limitation to the utility model.

Claims

1. An air spring bladder skin buckling structure, comprising a buckling support seat (1), a bladder skin (2) connected to the buckling support seat (1) and a buckling base (3), an outer cylinder (5) arranged outside the bladder skin (2), and a plurality of buckling fixtures (6) arranged outside the outer cylinder (5) and connected to the outer cylinder (5), wherein the plurality of buckling fixtures (6) are symmetrical with the center of the cross section of the outer cylinder (5) and are evenly distributed outside the outer cylinder (5), and the first portion (21) of the bladder skin (2) is sleeved on the buckling support seat (1), characterized in that: The buckling support seat (1) is provided with a telescopic structure (7), part of which is arranged inside the buckling support seat (1). The telescopic structure (7) can move back and forth relative to the buckling support seat (1). A buckling ring (4) is sleeved on the telescopic structure (7). The buckling tool (6) can control the buckling ring (4) to shrink, so that the buckling ring (4) can make the telescopic structure (7) move toward the inside of the buckling support seat (1).

2. The air spring skin buckling structure according to claim 1, characterized in that: The buckling support seat (1) comprises a base (11) and a handle (12), wherein the base (11) is accommodated in the buckling base (3), and the handle (12) extends out of the buckling base (3) through a hole at the bottom of the buckling base (3).

3. The air spring skin buckling structure according to claim 2, characterized in that: The base (11) comprises a base (111) and a base body (112) arranged on the base (111); the handle (12) and the base body (112) are arranged relatively on the upper and lower sides of the base (111); the base body (112) comprises a first main body (1121) and a second main body (1122) arranged on the first main body (1121).

4. The air spring skin buckling structure according to claim 3, characterized in that: The length of the cross section of the base (111) is smaller than the length of the cross section of the inner cavity of the pressing base (3), and the length of the cross section of the base (111) is larger than the length of the cross section of the base body (112). The first main body (1121) and the inner cavity wall of the pressing base (3) form a gap (31), and the first part (21) of the bag skin (2) is arranged in the gap (31), and the front end of the first part (21) is in contact with the top of the base (111).

5. The air spring skin buckling structure according to claim 3, characterized in that: At least three telescopic structures (7) are arranged on the second body (1122), and the at least three telescopic structures (7) are evenly distributed on the side surface of the second body (1122) with the center of the cross section of the second body (1122) as a symmetric point.

6. The air spring skin buckling structure according to claim 3, characterized in that: The telescopic structure (7) comprises a sliding component (71) and a spring (72), wherein the top end of the sliding component (71) presses against the inner side surface of the retaining ring (4), and the spring (72) is accommodated in an internal channel (1123) of the second body (1122), and a portion of the sliding component (71) is arranged in the internal channel (1123) and contacts the spring (72).

7. The air spring skin buckling structure according to claim 6, characterized in that: At least three undercut structures (711) are provided on the sliding component (71), and the undercut structure (711) includes a first section (7111) and a second section (7112), wherein the front end of the first section (7111) is interference-fitted in the internal channel (1123) of the second body (1122), and the second section (7112) is in contact with the spring (72).

8. The air spring skin buckling structure according to claim 6, characterized in that: The sliding component (71) is made of a flexible material such as rubber, elastomer or plastic.

9. The air spring skin buckling structure according to claim 1, characterized in that: The first inner side surface (61) of the pressing tool (6) is a triangular structure that is concave inwards.

10. The air spring skin buckling structure according to claim 1, characterized in that: The contact portion between the front end portion (51) of the outer tube (5) and the bladder skin (2) is provided with anti-slip grooves (52), and the top end (511) of the front end portion (51) of the outer tube (5) is accommodated in a chamber (8) formed by the buckling base (3) and the bladder skin (2).

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