Air spring seat and air spring damper

Abstract

The utility model relates to the technical field of shock absorbers, and provides an air spring seat and an air spring shock absorber. The air spring seat comprises an annular body, a first welding part, a sealing part, a positioning part and a second welding part, the first welding part, the sealing part, the positioning part and the second welding part are sequentially distributed on the annular body in the axial direction, a first check ring is arranged between the first welding part and the sealing part, the first check ring protrudes out of the sealing part in the radial direction, and a first guide inclined face is formed on the peripheral face of the first check ring; the outer peripheral surface of the positioning part is a conical surface. According to the air spring seat, through the first check ring arranged between the first welding part and the sealing part, welding spatter is effectively blocked, the surface quality of the sealing part is improved, and the qualification rate of air spring shock absorber products is increased; and through the design that the peripheral surface of the positioning part is a conical surface, the air spring is effectively supported, the pull-out force of the air spring and the positioning part is improved, and abnormal sound caused by movement of the air spring and the positioning part is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of shock absorbers, in particular to an air spring seat and an air spring shock absorber. Background Art

[0002] The air spring shock absorber comprises a shock absorber assembly and an air spring assembly, wherein the outer cylinder of the shock absorber assembly is sleeved with an air spring seat, and the air spring of the air spring assembly is supported on the air spring seat.

[0003] Reference Figure 1 The structure of the air spring seat being assembled on the outer cylinder barrel is shown. The current air spring seat is welded to the outer cylinder barrel 10 through an upper weld 21 and a lower weld 22, and is used to support the air spring and transmit the vertical load of the air spring. A sealing surface 23 is used to achieve sealing cooperation between the air spring and the air spring seat to ensure the air tightness of the air spring.

[0004] The problems with current air spring seats are:

[0005] The spatter generated when the upper weld 21 is welded to the outer cylinder 10 is easy to adhere to the sealing surface 23, destroying the sealing performance of the sealing surface 23, resulting in the loss of the air tightness of the air spring and reducing the qualified rate of the air spring shock absorber products.

[0006] In addition, the current air spring seat and the air spring are only sealed by the sealing surface, and the step portion 24 is used as an anti-slip design. When the air spring shock absorber moves, the air spring is easy to move relative to the air spring seat, causing abnormal noise.

[0007] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the utility model, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Utility Model Content

[0008] In view of this, the utility model provides an air spring seat and an air spring damper, which effectively blocks welding spatter by providing a first retaining ring between the first welding portion and the sealing portion, improves the surface quality of the sealing portion, and improves the qualified rate of the air spring damper products; and by forming the outer peripheral surface of the positioning portion into a conical surface design, improves the release force of the air spring and the positioning portion, and prevents the air spring and the positioning portion from moving during the operation of the air spring damper and causing abnormal noise.

[0009] One aspect of the utility model provides an air spring seat, comprising an annular body and a first welding portion, a sealing portion, a positioning portion and a second welding portion distributed in sequence on the annular body along the axial direction, wherein: a first retaining ring is arranged between the first welding portion and the sealing portion, the first retaining ring protrudes from the sealing portion in the radial direction, and the outer peripheral surface of the first retaining ring is formed as a first guiding inclined surface; the outer peripheral surface of the positioning portion is formed as a conical surface.

[0010] In some embodiments, a length of the first welding portion along the axial direction and a width of the first welding portion along the radial direction are both greater than 3 mm.

[0011] In some embodiments, the lower end surface of the first retaining ring is formed as a second guiding inclined surface.

[0012] In some embodiments, a second retaining ring is provided between the sealing portion and the positioning portion, and the second retaining ring protrudes from the sealing portion in the radial direction so that the sealing portion is formed into a first sealing groove limited between the first retaining ring and the second retaining ring.

[0013] In some embodiments, a second sealing groove is provided between the second retaining ring and the upper end surface of the positioning portion.

[0014] In some embodiments, the lower end surface of the second retaining ring is formed as a third guiding inclined surface.

[0015] In some embodiments, the angle between the conical surface and the axial direction is between 15° and 45°.

[0016] In some embodiments, a stop step is provided at the lower end of the conical surface.

[0017] In some embodiments, the lower end surface of the positioning portion is formed as an avoidance slope.

[0018] Another aspect of the utility model provides an air spring shock absorber, comprising a shock absorber assembly and an air spring assembly, wherein: the outer cylinder of the shock absorber assembly is sleeved with an air spring seat as described in any of the above embodiments, and the air spring seat is welded to the outer cylinder through a first welding part and a second welding part; the air spring of the air spring assembly is supported on a positioning part of the air spring seat, and the air spring is sealed and connected to the sealing part through a clamp or a sealing ring.

[0019] Compared with the prior art, the beneficial effects of the present invention include at least:

[0020] The air spring seat of the utility model effectively blocks splashes generated when the first welding part and the outer cylinder are welded by a first retaining ring arranged between the first welding part and the sealing part, avoids affecting the sealing performance of the sealing part, improves the surface quality of the sealing part, ensures the air tightness of the air spring after assembly, and improves the qualified rate of air spring shock absorber products.

[0021] The outer peripheral surface of the first retaining ring is formed as a first guiding inclined surface, which can facilitate the assembly of the air spring, so that the air spring can be smoothly put on the air spring seat under the guidance of the first guiding inclined surface and seal with the sealing part.

[0022] The air spring seat of the utility model is also designed with a conical surface on the outer peripheral surface of the positioning part, which effectively supports the air spring. Through the cooperation between the air spring and the conical surface, the escape force of the air spring and the positioning part is improved, and the air spring and the positioning part are effectively prevented from moving during the operation of the air spring damper and causing abnormal noise.

[0023] It should be understood that the above general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings herein are incorporated into the specification and constitute a part of the specification, showing embodiments consistent with the present invention, and together with the specification, are used to explain the principles of the present invention. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0025] Figure 1 A schematic diagram showing the structure of a current air spring seat being assembled on an outer cylinder;

[0026] Figure 2 A schematic diagram of the three-dimensional structure of the air spring seat in the embodiment of the utility model is shown;

[0027] Figure 3 A schematic cross-sectional view of the air spring seat in an embodiment of the utility model is shown;

[0028] Figure 4 A schematic diagram showing the structure of the air spring seat being assembled on the outer cylinder in an embodiment of the utility model is shown. DETAILED DESCRIPTION

[0029] 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. Instead, these embodiments are provided to make the present invention more comprehensive and complete and to fully convey the concepts of the example embodiments to those skilled in the art.

[0030] The accompanying drawings are only schematic illustrations of the present invention and are not necessarily drawn to scale. The same reference numerals in the drawings represent the same or similar structures, and thus their repeated description will be omitted.

[0031] The words "first", "second" and similar words used in the specific description do not indicate any order, quantity or importance, but are only used to distinguish different components. The orientation or position relationship indicated by the terms "upper", "lower", "axial", "radial" and the like are based on the orientation or position relationship shown in the accompanying drawings. They are only for the convenience of description and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, they cannot be understood as limitations on the present utility model. The term "plurality" means two or more, unless otherwise clearly and specifically defined. In addition, in the description of the present utility model, when it is said that a device is "connected" to another device, this includes not only direct connections, but also indirect connections through other elements.

[0032] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in different embodiments may be combined with each other.

[0033] Figure 2 The three-dimensional structure of the air spring seat of the utility model embodiment is shown in FIG. Figure 3 The cross-sectional structure of the air spring seat in the embodiment of the utility model is shown. Figure 4 The structure of the air spring seat in the embodiment of the utility model is shown as follows: Figures 2 to 4 As shown, the air spring seat 30 provided in the embodiment of the utility model includes:

[0034] The annular body and the first welding portion 31, the sealing portion 32, the positioning portion 33 and the second welding portion 34 are sequentially distributed on the annular body along the axial direction Z, wherein:

[0035] A first retaining ring 35 is provided between the first welding portion 31 and the sealing portion 32. The first retaining ring 35 protrudes from the sealing portion 32 in the radial direction X, and an outer peripheral surface 35a of the first retaining ring 35 is formed as a first guiding inclined surface.

[0036] The outer peripheral surface 33a of the positioning portion 33 is formed into a tapered surface.

[0037] The air spring seat 30 of the utility model effectively blocks the splashes generated when the first welding part 31 and the outer cylinder 10 are welded by the first retaining ring 35 provided between the first welding part 31 and the sealing part 32, avoids affecting the sealing performance of the sealing part 32, improves the surface quality of the sealing part 32, ensures the air tightness of the air spring after assembly, and improves the qualified rate of the air spring shock absorber products.

[0038] The outer peripheral surface 35 a of the first retaining ring 35 is formed as a first guiding inclined surface, which can facilitate the assembly of the air spring, so that the air spring can be smoothly put on the air spring seat 30 under the guidance of the first guiding inclined surface and seal with the sealing portion 32 .

[0039] The air spring seat 30 of the utility model is also designed with the outer peripheral surface 33a of the positioning part 33 formed as a conical surface, which effectively supports the air spring. Through the cooperation between the air spring and the conical surface, the escape force of the air spring and the positioning part 33 is improved, and the air spring and the positioning part 33 are effectively prevented from moving during the operation of the air spring damper and causing abnormal noise.

[0040] In some embodiments, the length of the first welding portion 31 along the axial direction Z and the width along the radial direction X are both greater than 3 mm.

[0041] In the existing air spring seat, the parent material contact surface of the upper weld 21 is small, which is not conducive to stable welding. The utility model increases the parent material contact surface of the first welding part 31, and sets the length of the first welding part 31 along the axial direction Z and the width along the radial direction X to be greater than 3mm, thereby ensuring the welding quality, facilitating welding production, and facilitating the subsequent stable assembly of the air spring and the outer cylinder 10.

[0042] In some embodiments, the lower end surface 35b of the first retaining ring 35 is formed as a second guiding slope. Through the second guiding slope, the air spring and the sealing portion 32 can be sealed against the second guiding slope after being connected, thereby improving the air tightness of the air spring and the air spring seat 30.

[0043] In some embodiments, a second retaining ring 36 is disposed between the sealing portion 32 and the positioning portion 33 . The second retaining ring 36 protrudes from the sealing portion 32 in the radial direction X, so that the sealing portion 32 is formed into a first sealing groove limited between the first retaining ring 35 and the second retaining ring 36 .

[0044] The sealing portion 32 is formed as a sealing groove structure, which can effectively avoid welding spatter on the one hand to improve the qualification rate of air spring shock absorber products, and on the other hand can enhance the sealing fit between the air spring and the sealing portion 32. For example, the air spring can be embedded in the sealing portion 32 and pressed into the sealing portion 32 by components such as a clamp or a sealing ring, thereby ensuring the air tightness of the air spring.

[0045] In some embodiments, a second sealing groove 37 is provided between the second retaining ring 36 and the upper end surface of the positioning portion 33. The second sealing groove 37 cooperates with the first sealing groove of the sealing portion 32 to form a two-stage sealing structure, effectively enhancing the sealing fit between the air spring and the air spring seat 30.

[0046] In some embodiments, the lower end surface 36a of the second retaining ring 36 is formed as a third guiding slope. Through the third guiding slope, the air spring can fit the third guiding slope after being sealed with the second sealing groove 37, thereby improving the air tightness of the air spring and the air spring seat 30.

[0047] In some embodiments, the angle between the conical surface of the positioning portion 33 and the axial direction Z is between 15° and 45°. The angle design of the conical surface effectively improves the release force of the air spring and the positioning portion 33, and prevents the air spring and the positioning portion 33 from moving during the operation of the air spring damper, thereby preventing abnormal noise.

[0048] In some embodiments, a stop step (not specifically shown in the figure) is provided at the lower end of the conical surface. The stop step can prevent the air spring from coming out under large-amplitude vibration.

[0049] In some embodiments, the lower end surface of the positioning portion 33 is formed as an avoidance slope 330. The avoidance slope 330 can provide an operating space and an observation window when the second welding portion 34 is welded to the outer cylinder 10, so as to facilitate the control of the welding of the second welding portion 34 and the outer cylinder 10.

[0050] The present invention also provides an air spring damper, which is equipped with an air spring seat 30 as described in any of the above embodiments. Figures 2 to 4 As shown, the air spring shock absorber provided by the embodiment of the utility model comprises a shock absorber assembly and an air spring assembly, wherein:

[0051] The outer cylinder 10 of the shock absorber assembly is sleeved with an air spring seat 30, and the air spring seat 30 is welded to the outer cylinder 10 through a first welding portion 31 and a second welding portion 34;

[0052] The air spring of the air spring assembly is supported on the positioning portion 33 of the air spring seat 30 , and the air spring is sealedly connected to the sealing portion 32 via a clamp or a sealing ring.

[0053] With the aid of the above-mentioned air spring seat 30, the air spring shock absorber of the utility model can achieve the following beneficial effects:

[0054] The first retaining ring 35 disposed between the first welding portion 31 and the sealing portion 32 effectively blocks the splashes generated when the first welding portion 31 is welded to the outer cylinder 10, thereby avoiding affecting the sealing performance of the sealing portion 32, improving the surface quality of the sealing portion 32, ensuring the air tightness of the air spring after assembly, and improving the qualified rate of the air spring shock absorber products;

[0055] The outer peripheral surface 35a of the first retaining ring 35 is formed as a first guiding inclined surface, which can facilitate the assembly of the air spring, so that the air spring can be smoothly put on the air spring seat 30 under the guidance of the first guiding inclined surface and seal with the sealing portion 32;

[0056] The outer peripheral surface 33a of the positioning portion 33 is designed to be a conical surface, which effectively supports the air spring. The cooperation between the air spring and the conical surface improves the release force of the air spring and the positioning portion 33, effectively preventing the air spring and the positioning portion 33 from moving during the operation of the air spring damper and causing abnormal noise.

[0057] 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, comprising an annular body and a first welding portion, a sealing portion, a positioning portion and a second welding portion sequentially distributed on the annular body along the axial direction, characterized in that: A first retaining ring is provided between the first welding portion and the sealing portion, the first retaining ring protrudes from the sealing portion in a radial direction, and an outer peripheral surface of the first retaining ring is formed as a first guiding inclined surface; The outer peripheral surface of the positioning portion is formed into a tapered surface.

2. The air spring seat according to claim 1, characterized in that: The length of the first welding portion along the axial direction and the width of the first welding portion along the radial direction are both greater than 3 mm.

3. The air spring seat according to claim 1, characterized in that: The lower end surface of the first retaining ring is formed as a second guiding inclined surface.

4. The air spring seat according to claim 1, characterized in that: A second retaining ring is disposed between the sealing portion and the positioning portion. The second retaining ring protrudes from the sealing portion in the radial direction so that the sealing portion is formed into a first sealing groove limited between the first retaining ring and the second retaining ring.

5. The air spring seat according to claim 4, characterized in that: A second sealing groove is provided between the second retaining ring and the upper end surface of the positioning portion.

6. The air spring seat according to claim 5, characterized in that: The lower end surface of the second retaining ring is formed as a third guiding inclined surface.

7. The air spring seat according to claim 1, characterized in that: The angle between the conical surface and the axial direction is between 15° and 45°.

8. The air spring seat according to claim 1, characterized in that: A stop step is arranged at the lower end of the conical surface.

9. The air spring seat according to claim 1, characterized in that: The lower end surface of the positioning portion is formed as an avoidance slope.

10. An air spring shock absorber, comprising a shock absorber assembly and an air spring assembly, characterized in that: The outer cylinder of the shock absorber assembly is sleeved with the air spring seat according to any one of claims 1 to 9, and the air spring seat is welded to the outer cylinder through a first welding portion and a second welding portion; The air spring of the air spring assembly is supported on the positioning portion of the air spring seat, and the air spring is sealed and connected to the sealing portion via a clamp or a sealing ring.

Images