Air spring seat

Abstract

The utility model provides an air spring seat which is used for connecting an air spring and a shock absorber in a sealing mode, the air spring comprises an air bag and a piston fixedly connected with the air bag in a sealing mode, the shock absorber comprises a shock absorber outer cylinder, a first end of the shock absorber outer cylinder is connected with a first end of the piston, and a second end of the shock absorber outer cylinder is connected with a second end of the piston. The piston is arranged at the second end of the shock absorber outer cylinder, so that the shock absorber outer cylinder moves up and down along with the piston, and the air spring seat is arranged between the second end of the piston and the shock absorber outer cylinder in a sealed mode and comprises a sleeve and at least one supporting part; the sleeve is arranged on the outer side of the shock absorber outer cylinder in a sleeving mode and fixedly connected with the shock absorber outer cylinder. The supporting part protrudes out of the outer side wall of the sleeve, extends outwards and abuts against the inner wall of the piston. According to the shock absorber, the supporting part abuts against the interior of the piston to limit rotation of the piston, abnormal playing sound caused by rotation of the piston is eliminated, and the product performance of the shock absorber is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile parts, in particular to an air spring seat. Background Art

[0002] Air spring shock absorbers can accelerate the attenuation of frame and body vibrations and improve the ride smoothness (comfort) of the car. They are now used in more and more car suspension systems. Air spring shock absorbers usually consist of two major parts: a shock absorber and an air spring. The air spring mainly consists of an air bag and a piston connected to the air bag. The shock absorber is arranged in the piston, and the space between the shock absorber and the air bag is filled with high-pressure air. Therefore, to ensure the stable use and safety of the air spring shock absorber, the sealing between the shock absorber and the piston must be guaranteed. The existing air spring shock absorbers mainly achieve a sealed connection between the lower end of the air spring piston and the shock absorber through an air spring seat.

[0003] Specifically, Figures 1 to 3 As shown, the air spring seat 10' is welded to the shock absorber outer cylinder 20 to support the piston of the air spring and transmit the vertical load of the air spring; at the same time, an O-ring is placed on the sealing surface c' on the air spring seat 10' to ensure the air tightness of the air spring.

[0004] Please continue to refer to 1. The air spring seat 10' is welded to the shock absorber outer tube 20 through two welds, the upper weld a' and the lower weld b'. The sealing surface c' where the O-ring is placed is located on the upper side of the air spring seat 10'. In the prior art, the contact surface between the weld a' and the air spring seat 10' is small, and poor welding may occur. The welding of the upper weld a' is likely to cause welding slag to splash, thereby damaging the sealing surface c', and further reducing the product qualification rate. In addition, the shock absorber outer tube 20 and the air spring piston rely on the sealing ring and the internal air pressure. During movement, the piston is likely to rotate relative to the air spring seat, causing movement, causing abnormal noise, and affecting the product performance of the shock absorber. Utility Model Content

[0005] In view of the problems in the prior art, the purpose of the utility model is to provide an air spring seat, which can limit the relative rotational movement between the piston of the air spring and the air spring seat, thereby eliminating abnormal noise caused by the movement of the air spring and the air spring seat, and improving the product performance of the shock absorber.

[0006] The utility model provides an air spring seat for sealingly connecting an air spring and a shock absorber, wherein the air spring comprises an air bag and a piston sealed and fixedly connected to the air bag, and the shock absorber comprises a shock absorber outer cylinder, wherein a first end of the shock absorber outer cylinder is connected to a first end of the piston, so that the shock absorber outer cylinder moves up and down with the piston, and the air spring seat is sealed between the second end of the piston and the shock absorber outer cylinder, and the air spring seat comprises:

[0007] A sleeve, which is sleeved on the outer side of the shock absorber outer cylinder and fixedly connected to the shock absorber outer cylinder;

[0008] At least one supporting portion protrudes from the outer wall of the sleeve and extends outward to abut against the inner wall of the piston.

[0009] In these embodiments, a support portion abutting against the inner wall of the piston is provided on the side wall of the sleeve to prevent the piston from rotating relative to the air spring seat, thereby eliminating abnormal noise caused by the movement of the piston and the air spring seat and improving the product performance of the shock absorber.

[0010] In some embodiments, the support portion is in a sawtooth or arc shape.

[0011] In these embodiments, the specific shape of the support portion is specifically shown. The shape of the support portion can be sawtooth or arc-shaped, etc., to limit the rotation of the piston relative to the air spring seat, thereby eliminating the abnormal noise caused by the rotational motion.

[0012] In some embodiments, the support portions are symmetrically distributed in a circumferential direction of the sleeve.

[0013] In these embodiments, the support parts are symmetrically distributed on the circumference of the sleeve, so that the piston is evenly stressed when it abuts against the support parts, and the piston is not easily deformed.

[0014] In some embodiments, the sleeve includes an axially penetrating mounting hole, and the sleeve is sleeved on the outer side of the shock absorber outer cylinder through the mounting hole.

[0015] In these embodiments, the mounting hole structure of the air spring seat is specifically shown. The air spring seat has a simple structure and is easy to manufacture and assemble.

[0016] In some embodiments, the top and bottom ends of the air spring seat include annular protrusions facing outwardly away from the sleeve.

[0017] In these embodiments, annular protrusions are provided at the top and bottom ends of the sleeve, so that the contact area between the weld formed after the air spring seat and the shock absorber outer tube are welded and the air spring seat is increased, thereby improving the welding quality and facilitating the subsequent assembly of the air spring.

[0018] In some embodiments, the top end and the bottom end of the sleeve are fixedly connected to the outer cylinder of the shock absorber by welding.

[0019] In these embodiments, the specific connection method between the sleeve and the shock absorber outer tube is specifically defined. The welding method can be full welding, that is, all the contact places of the air spring seat and the shock absorber outer tube that are welded together are fusion welded; or intermittent welding can be used, that is, the contact parts of the air spring seat and the shock absorber outer tube that are welded together are fusion welded. No specific limitation is made here.

[0020] In some embodiments, a plurality of annular sealing grooves are provided between the annular protrusions.

[0021] In these embodiments, by providing an annular sealing groove, splashes on the sealing surface during welding can be reduced, thereby improving the welding yield of the product.

[0022] In some embodiments, the number of the sealing grooves is two.

[0023] In these embodiments, the number of sealing grooves on an air spring seat is specifically defined.

[0024] In some embodiments, a seal is disposed in the sealing groove.

[0025] In these embodiments, the sealing member is a sealing ring embedded in the sealing groove, and the outer wall of the sealing ring is in close contact with the inner wall of the piston.

[0026] In some embodiments, the shock absorber outer cylinder and the air spring are pressed together through the sealing member.

[0027] In these embodiments, the above structure achieves stable sealing between the air spring seat and the piston, and has a simple structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Other features, objectives and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings.

[0029] Figure 1 It is a schematic diagram of the assembly of the air spring seat and the shock absorber outer cylinder in the prior art;

[0030] Figure 2 yes Figure 1 A three-dimensional view of an air spring seat;

[0031] Figure 3 yes Figure 1 A cross-sectional view of an air spring seat in FIG.

[0032] Figure 4 It is a schematic diagram of the assembly of the air spring seat and the shock absorber outer cylinder according to one embodiment of the utility model;

[0033] Figure 5 yes Figure 4A three-dimensional view of an air spring seat;

[0034] Figure 6 yes Figure 4 Cross-sectional view of the air spring seat in FIG.

[0035] Reference numerals:

[0036] 10' Air spring seat in the prior art

[0037] a' Weld seam on air spring seat in prior art

[0038] b' Air spring seat lower weld in the prior art

[0039] c' Sealing surface of air spring seat in prior art

[0040] 10 Air spring seat in the utility model

[0041] 11 Sleeve

[0042] 111 Mounting holes

[0043] 12 Support

[0044] 13 Annular protrusion

[0045] 14 Sealing groove

[0046] 20 Shock absorber outer cylinder

[0047] a The upper weld in the utility model

[0048] b The lower weld in the utility model

[0049] c Sealing surface of the air spring seat in the utility model DETAILED DESCRIPTION

[0050] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that the present invention will be comprehensive and complete and fully convey the concepts of the example embodiments to those skilled in the art. In the figures, the same reference numerals represent the same or similar structures, and thus their repeated description will be omitted. "or" and "or" in the specification may both mean "and" or "or".

[0051] In the representations of the present application, the representations with reference to the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics represented in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. Moreover, the represented specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples represented in the present application and the features of the different embodiments or examples, unless they contradict each other.

[0052] 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 technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the representation of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0053] It should be further understood that the terms "comprises" and "includes" indicate the presence of features, steps, operations, elements, components, items, kinds, and / or groups, but do not exclude the presence, occurrence, or addition of one or more other features, steps, operations, elements, components, items, kinds, and / or groups. The terms "or" and "and / or" used herein are interpreted as inclusive, or mean any one or any combination. Therefore, "A, B or C" or "A, B and / or C" means "any of the following: A; B; C; A and B; A and C; B and C; A, B and C". Exceptions to this definition will only occur when the combination of elements, functions, steps or operations is inherently mutually exclusive in some way.

[0054] In order to solve the problems in the prior art, an embodiment of the utility model provides an air spring seat for sealingly connecting an air spring and a shock absorber, wherein the air spring includes an airbag and a piston sealed and fixedly connected to the airbag, and the shock absorber includes a shock absorber outer cylinder, the upper end of the shock absorber outer cylinder is connected to the upper end of the piston, so that the shock absorber outer cylinder moves up and down with the piston, and the air spring seat is sealed between the lower end of the piston and the shock absorber outer cylinder. Figure 4 A schematic diagram showing the assembly of an air spring seat and a shock absorber outer cylinder provided by an embodiment of the utility model is shown;

[0055] Figure 5 Shows Figure 4 A three-dimensional view of an air spring seat; Figure 6 Shows Figure 4 A cross-sectional view of the air spring seat in FIG. Figures 4 to 6As shown, the air spring seat 10 provided in the embodiment of the utility model includes a sleeve 11 and at least one support portion 12; the sleeve 11 is sleeved on the outside of the shock absorber outer cylinder 20 and is fixedly connected to the shock absorber outer cylinder 20; the support portion 12 protrudes from the outer wall of the sleeve 11 and extends outward, and the support portion 12 abuts against the inner wall of the piston (not shown in the figure).

[0056] By providing a support portion 12 on the side wall of the sleeve 11 that abuts against the inner wall of the piston, the piston is prevented from rotating relative to the air spring seat 10, thereby eliminating abnormal noise caused by the movement of the piston and the air spring seat, thereby improving the product performance of the shock absorber.

[0057] In some embodiments, the shape of the support portion 12 may be sawtooth or arc-shaped, etc., which is not specifically limited here.

[0058] like Figure 5 As shown, the support parts 12 are symmetrically distributed on the circumference of the sleeve 11. The support parts 12 are symmetrically distributed on the circumference of the sleeve, so that the piston is evenly stressed when it abuts against the support parts 12, and the piston is not easily deformed.

[0059] The sleeve 11 includes an axially penetrating mounting hole 111, and the sleeve 11 is connected to the outer side of the shock absorber outer cylinder 20 through the mounting hole 111. The mounting hole on the sleeve 11 has a simple design structure and is easy to manufacture and assemble.

[0060] The top and bottom ends of the air spring seat 10 include an annular protrusion 13 facing outward from the sleeve 11. The top and bottom ends of the sleeve 11 are fixedly connected to the shock absorber outer cylinder 20 by welding. By providing the annular protrusion 13 at the top and bottom ends of the sleeve 11, the contact area between the weld and the shock absorber outer cylinder and the spring seat is increased, the weld strength and welding sealing quality at a of the air spring seat are ensured, the risk of weld leakage is reduced, and the subsequent air spring assembly is convenient. The welding method can be full welding, that is, all contacting places of the air spring seat 10 and the shock absorber outer cylinder 20 that are welded together are fusion welded; or intermittent welding can be used, that is, partial contacting places of the air spring seat 10 and the shock absorber outer cylinder 20 that are welded together are fusion welded, and no specific restrictions are made here.

[0061] A plurality of annular sealing grooves 14 are provided between the annular protrusions 13, and a sealing member (not shown in the figure) is provided in the sealing grooves 14, and the bottom of the sealing grooves 14 is the sealing surface c. When welding the upper weld a, welding slag may splash, and if the splashed welding slag splashes to the sealing surface c, it will cause leakage, which may destroy the sealing of the sealing groove, causing leakage in the air spring in the later stage, and reducing the qualified rate of the product. The sealing surface c of the annular sealing groove 14 is small in area, and welding slag is not easy to splash to the sealing surface c, so it can reduce the splash to the sealing surface during welding and improve the welding yield of the product.

[0062] In this embodiment, the number of the sealing grooves is two.

[0063] The shock absorber outer cylinder 20 and the piston are tightly matched through a seal, and the seal can be a sealing ring embedded in the sealing groove 14, and the outer wall of the sealing ring is in close contact with the inner wall of the piston. The above structure realizes stable sealing between the air spring seat and the piston, and the structure is simple.

[0064] The air spring seat provided by the utility model has the following advantages:

[0065] The utility model provides an air spring seat, which is used to seal and connect an air spring and a shock absorber, wherein the air spring includes an airbag and a piston that is seal-fixedly connected to the airbag, and the shock absorber includes a shock absorber outer cylinder, wherein the first end of the shock absorber outer cylinder is connected to the first end of the piston, so that the shock absorber outer cylinder moves up and down with the piston, and the air spring seat is seal-fixedly provided between the second end of the piston and the shock absorber outer cylinder, and the air spring seat includes a sleeve and at least one support portion; the sleeve is sleeved on the outside of the shock absorber outer cylinder and is fixedly connected to the shock absorber outer cylinder; the support portion protrudes from the outer wall of the sleeve and extends outwards, and abuts against the inner wall of the piston. The utility model sets an outwardly extending support portion on the outer wall of the air spring seat, so that the support portion abuts against the inner wall of the air spring piston, and then the support portion can limit the rotational movement of the air spring piston, and then the abnormal noise problem caused by the rotational movement of the air spring piston can be eliminated, thereby improving the product performance of the shock absorber.

[0066] The above contents are further detailed descriptions of the present invention in combination with specific preferred implementations, and the specific implementation of the present invention cannot be considered to be limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the protection scope of the present invention.

Claims

1. An air spring seat, used for sealingly connecting an air spring and a shock absorber, wherein the air spring comprises an air bag and a piston sealed and fixedly connected to the air bag, and the shock absorber comprises a shock absorber outer cylinder, wherein a first end of the shock absorber outer cylinder is connected to a first end of the piston, so that the shock absorber outer cylinder moves up and down with the piston, and the air spring seat is sealed between the second end of the piston and the shock absorber outer cylinder, characterized in that: The air spring seat comprises: A sleeve, which is sleeved on the outer side of the shock absorber outer cylinder and fixedly connected to the shock absorber outer cylinder; At least one supporting portion protrudes from the outer wall of the sleeve and extends outward to abut against the inner wall of the piston.

2. The air spring seat according to claim 1, characterized in that: The support portion is in a sawtooth or arc shape.

3. The air spring seat according to claim 1, characterized in that: The support parts are symmetrically distributed in the circumferential direction of the sleeve.

4. The air spring seat according to claim 1, characterized in that: The sleeve comprises an axially penetrating mounting hole, and the sleeve is sleeved on the outer side of the shock absorber outer cylinder through the mounting hole.

5. The air spring seat according to any one of claims 1 to 4, characterized in that: The top and bottom ends of the air spring seat include annular protrusions facing outward from the sleeve.

6. The air spring seat according to claim 5, characterized in that: The top end and the bottom end of the sleeve are fixedly connected to the outer cylinder of the shock absorber by welding.

7. The air spring seat according to claim 6, characterized in that: A plurality of annular sealing grooves are arranged between the annular protrusions.

8. The air spring seat according to claim 7, characterized in that: The number of the sealing grooves is two.

9. The air spring seat according to claim 8, characterized in that: A sealing member is arranged in the sealing groove.

10. The air spring seat according to claim 9, characterized in that: The shock absorber outer cylinder and the air spring are pressed and matched with each other through the sealing member.

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