CN220037324U - Air spring's top of tower pressure equipment structure assembly and air spring - Google Patents

Abstract

The utility model discloses an air spring tower top press-mounting structure assembly and an air spring. The bushing is annular and is positioned in the bushing mounting portion. The top cover is positioned in the bushing installation part and is pressed on the upper end surface of the bushing. The pressing part is arranged at the end part of the lining installation part far away from the tower foundation and bends towards the inner side of the lining installation part, the inner side end surface of the pressing part is in butt joint with the end surface of the top cover, and the outer peripheral edge of one side of the top cover far away from the tower foundation is at least partially covered. The pressing part is abutted to the outer end face of the top cover to realize the press fitting of the bushing, so that the quality requirement on the production process is low, and the device has the advantages of simple structure, low cost and high press fitting efficiency.

Description

Air spring's top of tower pressure equipment structure assembly and air spring

Technical Field

The utility model relates to the technical field of air springs, in particular to an air spring tower top press-fit structure assembly and an air spring.

Background

The air spring is filled with compressed air in a sealed container, and the air spring realizes the elastic action by utilizing the compressibility of the air, and is widely applied to the field of automobiles, so that the riding comfort of passengers in the automobiles is improved. The top of air spring is provided with the overhead structure and presses the bush of dress in the overhead structure, and the upper portion of bush is the opening form, for preventing that the bush from being ejecting in the use, generally needs to set up press-fit structure pressure equipment bush in the top of bush, and common pressure equipment mode has two kinds:

a top cover with external threads is arranged above a bushing, meanwhile, internal threads are machined at the inner side of a bushing mounting hole of the top of the tower and at the position where the top cover is matched, the top cover is fastened on the top of the tower through threads, so that the bushing is fixed.

In addition, a spring retainer ring is used, a plane pressing plate (the outer diameter of the plane pressing plate is slightly smaller than the inner diameter of a mounting hole of a top cover bushing) is placed above the bushing, a spring retainer ring is placed on the pressing plate, a circle of groove is needed to be machined on the inner side of the top cover at the position of the retainer ring in advance, so that the spring retainer ring can be clamped into the groove in a supporting mode after being pressed to the position, the effect of fixing the pressing plate and the bushing is achieved, when the bushing is fixed in the mode, the spring retainer ring is needed, more parts are needed (one retainer ring is added, and due to the anti-corrosion requirement, the spring retainer ring can require a galvanized nickel coating or a Dacromet coating), the process is complex, the raw material cost can be increased, and if the spring retainer ring is not installed in place, the bushing is ejected in the using process of a vehicle, air spring leaks, and the basic supporting function is lost.

Therefore, when the pressure mounting structure is arranged above the lining of the air spring in the prior art to press-mount the lining, the problems of high cost, low pressure mounting efficiency, difficult control of the assembly quality of the production process and the like exist in the pressure mounting structure.

Disclosure of Invention

The utility model aims to solve the problems of high cost, low press-fitting efficiency, difficult control of the assembly quality of a production process and the like of a press-fitting structure when the press-fitting structure is arranged above the lining of an air spring in the prior art.

In order to solve the technical problems, the embodiment of the utility model discloses a tower top press-mounting structure assembly of an air spring, which comprises a tower top, a bushing, a top cover and a pressing part, wherein the tower top is positioned at the top of the air spring and comprises a tower base and an annular bushing mounting part protruding out of the end surface of the tower base. The bushing is annular and is positioned in the bushing mounting portion. The top cover is positioned in the bushing installation part and is pressed on the end surface of the bushing far away from the tower foundation.

The pressing part is arranged at the end part of the lining installation part far away from the tower foundation and bends towards the inner side of the lining installation part, the inner side end surface of the pressing part is in butt joint with the end surface of the top cover, and the outer peripheral edge of one side of the top cover far away from the tower foundation is at least partially covered.

By adopting the technical scheme, the pressing part is arranged at the end part of the lining installation part far away from the tower foundation so as to realize the press fitting of the lining, and the pressing part is used for covering the peripheral edge of the top cover far away from one side of the tower foundation when pressing the outer end surface of the top cover so as to realize the press fitting and fixing of the top cover. The bushing and the top cover are sequentially installed in the bushing installation part along the axis direction, the pressing part is deformed and abutted against the outer end face of the top cover through the pressing part, so that the pressing can be completed, the quality requirement on the production process is low, and the device has the advantages of being simple in structure, low in cost and high in pressing efficiency.

The embodiment of the utility model also discloses a tower top press-mounting structure assembly of the air spring, wherein the pressing parts are arranged on the end surface of the bushing mounting part far away from the tower foundation at intervals along the circumferential direction of the bushing mounting part.

By adopting the technical scheme, the plurality of pressing parts are arranged at intervals on the end face, far away from the tower foundation, of the bushing mounting part, so that the press-fit stability and the press-fit reliability of the pressing parts on the top cover and the bushing can be improved, and the top cover and the pressing parts can be prevented from being separated.

Preferably, in the tower top press-fitting structure assembly of an air spring disclosed in the embodiment of the present utility model, the pressing portion is integrally formed with the bush mounting portion.

The embodiment of the utility model also discloses a tower top press-mounting structure assembly of the air spring, and the pressing part is formed by bending the end part of the pressing bushing mounting part far away from the tower base.

By adopting the technical scheme, the lining and the top cover are sequentially installed in the lining installation part along the axial direction without additionally arranging the pressing parts of other structures, the end part, far away from the tower foundation, of the lining installation part is deformed towards one side of the end face of the top cover through pressing, and then the deformed part of the lining installation part forms the pressing part to be in butt joint with the top cover.

The embodiment of the utility model also discloses an overhead press-fit structure assembly of the air spring, wherein the side wall of the bushing mounting part extends along the axial direction in a sectional view taken along the axial direction of the air spring.

The embodiment of the utility model also discloses a tower top press-mounting structure assembly of the air spring, wherein in a sectional view taken along the axial direction of the air spring, the outer side wall of the pressing part and the outer side wall of the bushing mounting part form smooth transition.

The end of the pressing portion away from the bushing mounting portion is bent inward in the radial direction and protrudes from the inner side wall of the bushing mounting portion.

By adopting the technical scheme, the outer side wall of the pressing part and the outer side wall of the bushing installation part are in smooth transition, and the air spring with the structure is convenient to install in the actual use and application process and cannot interfere with other structures. The end part of the pressing part far away from the bushing installation part protrudes out of the inner side wall of the bushing installation part, so that the top cover and the bushing can be better pressed and fixed.

The embodiment of the utility model also discloses a tower top press-fitting structure assembly of the air spring, wherein one side of the bushing installation part, which is far away from the pressing part, is provided with an installation table, and the end part of the bushing, which is far away from the pressing part, is arranged on the installation table.

The end face of one side of the bushing away from the pressing part is abutted with the table top of the mounting table, and the central hole of the bushing is aligned with the central hole axis of the table top. And the outer side wall surface of the bushing in the radial direction is abutted against the inner side wall surface of the bushing mounting portion.

By adopting the technical scheme, one side end surface of the bushing, which is far away from the pressing part, is abutted with the table surface of the mounting table, so that the bushing is stably and reliably mounted on the inner side wall surface of the bushing mounting part.

The embodiment of the utility model also discloses an overhead press-fit structure assembly of the air spring, wherein the outer ring of the bushing is made of flexible materials, and the top cover is made of light metal. Wherein the end face of the top cover close to the lining and the end face of the lining far away from the tower foundation are both in a plane shape vertical to the axial direction. And the radial outer side wall surface of the bushing is in interference fit with the inner side wall surface of the bushing mounting part.

Preferably, the embodiment of the utility model also discloses a tower top press-mounting structure assembly of the air spring, wherein the bushing mounting part and the pressing part are made of a light metal material with excellent extensibility.

By adopting the technical scheme, the top cover is used for assisting in press-fitting the bushing, the outer side wall surface of the bushing in the radial direction is in interference fit with the inner side wall surface of the bushing installation part, and meanwhile, the air tightness of the tower top assembly and the air spring can be ensured by adding the rubber sealing ring on the lower part of the bushing, so that the air spring can work normally.

The embodiment of the utility model also discloses an air spring, which comprises an air spring body and the tower top press-fit structure assembly of the air spring, wherein the tower top press-fit structure assembly is positioned at the top end of the air spring body.

The beneficial effects of the utility model are as follows:

the utility model discloses a tower top press-fitting structure assembly of an air spring, which comprises a tower top, a bushing, a top cover and a pressing part, wherein the tower top is positioned at the top of the air spring and comprises a tower base and an annular bushing mounting part protruding out of the end surface of the tower base. The bushing is annular and is positioned in the bushing mounting portion. The top cover is positioned in the bushing installation part and is pressed on the end surface of the bushing far away from the tower foundation. The pressing part is arranged at the end part of the lining installation part far away from the tower foundation and bends towards the inner side of the lining installation part, the inner side end surface of the pressing part is in butt joint with the end surface of the top cover, and the outer peripheral edge of one side of the top cover far away from the tower foundation is at least partially covered. The end part of the lining installation part far away from the tower foundation is provided with the pressing part, so that the lining can be pressed, and the pressing part is used for pressing the outer end surface of the top cover and fixing the top cover by covering the outer peripheral edge of one side of the top cover far away from the tower foundation. The bushing and the top cover are sequentially installed in the bushing installation part along the axis direction, the pressing part is deformed and abutted against the outer end face of the top cover through the pressing part, so that the pressing can be completed, the quality requirement on the production process is low, and the device has the advantages of being simple in structure, low in cost and high in pressing efficiency.

Drawings

FIG. 1 is a cross-sectional view of an air spring overhead press-fit structure assembly provided by an embodiment of the present utility model after press-fitting;

FIG. 2 is a cross-sectional view of an air spring of an embodiment of the present utility model before press fitting of an overhead press fitting structure assembly;

fig. 3 is a cross-sectional view of an air spring tower top press-fitting structure assembly according to an embodiment of the present utility model.

Reference numerals illustrate:

100. a tower top;

110. a tower foundation; 120. a bushing mounting portion; 130. a mounting table;

200. a bushing;

210. a central bore;

300. a top cover;

400. a pressing part;

500. pressing and buckling a tool;

A. axial direction; B. radial direction.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the present utility model more apparent, embodiments of the present utility model will be described in further detail below with reference to the accompanying drawings.

Prior to writing the present embodiment, the problems in the prior art will be briefly described:

the prior art has two common modes when the bushing is pressed by the pressing structure, namely, a top cover with external threads is arranged above the bushing, meanwhile, the inner side of a bushing mounting hole of the top of the tower is provided with internal threads at the position where the top cover is matched, and the top cover is fastened on the top of the tower through threads, so that the bushing is fixed.

The other is to use the spring retainer ring, a plane pressing plate is placed above the lining, the spring retainer ring is placed on the pressing plate, a circle of groove is needed to be processed on the inner side of the top cover at the position of the retainer ring in advance, so that the spring retainer ring can be spread and clamped into the groove after being pressed to the position, the effect of fixing the pressing plate and the lining is achieved, the process requirement is high, if the spring retainer ring is not installed in place, the spring retainer ring can fall off in the using process of a vehicle, and the problems that the lining is ejected out and an air spring leaks air are caused. Therefore, the press-fitting structure of the bushing in the prior art has the problems of high cost, low press-fitting efficiency, difficult control of the assembly quality of the production process and the like.

Example 1

Referring to fig. 1, the tower top press-fitting structure assembly of the air spring includes a tower top 100, a bushing 200, a top cover 300 and a pressing portion 400, wherein the tower top 100 is located at the top of the air spring, and the tower top 100 includes a tower base 110 and an annular bushing mounting portion 120 protruding from an end surface of the tower base 110. The bushing 200 is annular and is positioned in the bushing mounting portion 120. The top cover 300 is positioned in the liner mounting portion 120 and is pressed against the end surface of the liner 200 remote from the foundation 110.

The pressing portion 400 is disposed at an end of the liner mounting portion 120 away from the foundation 110 and is bent toward the inside of the liner mounting portion 120, and an inner end surface of the pressing portion 400 abuts against an end surface of the top cover 300 and at least partially covers an outer peripheral edge of the top cover 300 on a side away from the foundation 110.

Specifically, referring to fig. 2, the liner mounting portion 120 has a cavity for mounting the liner 200 and the top cover 300 in an annular structure protruding from the end surface of the tower foundation 110, the liner 200 and the top cover 300 are located in the cavity, one end surface of the liner 200 close to the tower foundation 110 is attached to the end surface of the tower foundation 110, the top cover 300 is tightly attached to the liner 200, and the top cover 300 is pressed against the end surface of the liner 200 away from the tower foundation 110.

The bushing 200 is first press-fitted and fixed by the top cover 300, and because the contact area between the top cover 300 and the bushing 200 is large, the top cover 300 can be uniformly press-fitted on the end surface of the side of the bushing 200 away from the foundation 110, and the bushing 200 is not damaged by uneven or locally large force due to the large contact area and the large force bearing area.

Further, the top cover 300 is press-fitted by the pressing part 400 to realize the second press-fitting and fixing of the bush 200, and the top cover 300 and the bush 200 are integrally press-fitted and fixed in the cavity of the bush mounting part 120 to prevent the bush 200 from being ejected during use. The pressing of the liner 200 can be achieved by providing the pressing portion 400 at the end of the liner mounting portion 120 away from the foundation 110, and the pressing portion 400 presses the outer end surface of the top cover 300 to press and fix the top cover 300 by covering the outer peripheral edge of the top cover 300 on the side away from the foundation 110. The screw thread structure or the spring retainer ring is not required to be arranged, after the bushing 200 and the top cover 300 are sequentially arranged in the bushing installation part 120 along the axial direction, the pressing part 400 is deformed by the pressing part 400 and is abutted against the outer end face of the top cover 300, so that the pressing can be finished, the quality requirement on the production process is low, and the device has the advantages of simple structure, low cost and high pressing efficiency.

Further, a press-fitting forming process of the bush 200, the top cover 300, and the pressing portion 400 will be briefly described:

before the liner 200 and the top cover 300 are installed, a hollow cavity is formed in the middle of the liner installation part 120, as shown in fig. 2, the liner 200 is pressed in the cavity along the axial direction, one side end surface of the liner 200 is attached to the tower foundation 110, then the top cover 300 is pressed on the other side end surface of the liner 200, which is far away from the tower foundation 110, along the axial direction, and the top cover 300 is attached to the other side end surface of the liner 200, as shown in fig. 3, then the pressing part 400, which is far away from one end of the tower foundation 110, is pressed towards one side of the top cover 300, so that the pressing part 400 deforms, as shown in fig. 1, after the pressing part 400 deforms, the inner side end surface of the pressing part 400 abuts against the end surface of the top cover 300, and at least partially covers the peripheral edge of the side, which is far away from the tower foundation 110, of the top cover 300.

Note that, when the pressing portion 400 covers the outer peripheral edge of the top cover 300 on the side far from the foundation 110, the pressing portion 400 may cover continuously along the outer peripheral edge of the top cover 300, or may cover at intervals, and when the pressing portion 400 covers the outer peripheral edge of the top cover 300, the covered area may be one fifth, one fourth, one third, or the like of the radius of the top cover 300, which is not particularly limited in this embodiment.

The embodiment of the present embodiment also discloses a tower top press-fitting structure assembly of an air spring, wherein the pressing portions 400 are arranged on the end surface of the bushing mounting portion 120, which is far from the tower foundation 110, at intervals along the circumferential direction of the bushing mounting portion 120. Alternatively, the pressing portions 400 are continuously and uniformly spaced along the circumferential direction of the bushing mounting portion 120.

Specifically, in one embodiment, the pressing portions 400 are arranged on the end surface of the liner mounting portion 120 away from the foundation 110 at intervals along the circumferential direction of the liner mounting portion 120, and this arrangement will be briefly described: for example, when 4 pressing portions 400 are provided along the circumferential direction of the bushing mounting portion 120, the 4 pressing portions 400 are uniformly provided at intervals along the outer circumference of the bushing mounting portion 120, the central angle corresponding to the adjacent two pressing portions 400 is 90 °, and when 6 pressing portions 400 are provided, the central angle corresponding to the adjacent two pressing portions 400 is 60 °, it should be understood by those skilled in the art that when the pressing portions 400 are provided at intervals, the number includes, but is not limited to, 4 or 6 as mentioned in the present embodiment, and 3, 5, 8 or other numbers may be provided. By arranging the plurality of pressing portions 400 at intervals on the end surface of the liner attachment portion 120 remote from the foundation 110, the press-fitting stability and press-fitting reliability of the pressing portions 400 to the top cover 300 and the liner 200 can be improved, and detachment of the top cover 300 from the pressing portions 400 can be prevented.

In another embodiment, when the pressing portions 400 are continuously and uniformly spaced along the circumferential direction of the bushing mounting portion 120, it is understood that the pressing portions 400 entirely press-fit around the entire outer circumferential edge of the top cover 300 in this arrangement.

Preferably, in the present embodiment, the pressing part 400 is integrally formed with the bushing mounting part 120.

The embodiment of the present embodiment also discloses an air spring tower top press-fitting structure assembly, wherein the pressing portion 400 is formed by bending an end portion of the pressing bush mounting portion 120 away from the tower foundation 110.

Specifically, in the present embodiment, the pressing portion 400 is a part of the bushing mounting portion 120, and the end portion is bent and deformed by pressing the bushing mounting portion 120 away from the end portion of the foundation 110, so that the top cover 300 is press-fitted. In this way, there is no need to provide an additional pressing portion 400 with another structure, and after the liner 200 and the top cover 300 are sequentially installed in the liner installation portion 120 along the axial direction, the end portion of the liner installation portion 120, which is far away from the foundation 110, is deformed toward the end face side of the top cover 300 by pressing, so that the deformed portion of the liner installation portion 120 forms the pressing portion 400 to be abutted against the top cover 300.

Further, one of the modes of pressing the end of the liner attachment portion 120 away from the foundation 110 will be described as an example:

referring to fig. 2 and 3, the structure of the tower top press-fit structure assembly disclosed in the embodiment is shown in fig. 2 when the liner 200 and the tower top 100 are installed and the end of the liner mounting portion 120 away from the foundation 110 is not pressed, and at this time, the liner mounting portion 120 is in a straight cylindrical shape, and when the liner mounting portion 120 is pressed away from the end of the foundation 110, as shown in fig. 2, the press-fit tool 500 needs to be used.

Referring to fig. 2, the press-fastening tool 500 is located at an outer edge of an end portion of the liner mounting portion 120, which is far away from the foundation 110, and a press-fastening end surface is provided on a side of the press-fastening tool 500, which is close to the liner mounting portion 120, when the end portion of the liner mounting portion 120 is pressed and fastened, the top 100 or the press-fastening tool 500 is moved so that the end portion of the pressed and fastened liner mounting portion 120 contacts with the press-fastening end surface, then a force is applied to the end portion of the liner mounting portion 120 through the press-fastening tool 500, so that the end portion of the liner mounting portion 120 is deformed, the inner wall surface of the end portion side of the liner mounting portion 120 is deformed toward the top cover 300, and finally is attached to the top cover 300, and then the top 100 is rotated along an axial direction by taking an axis of the top 100 itself as a rotation axis, so that the whole periphery of the liner mounting portion 120 or the end surface of the top cover 300 is pressed and fastened by the press-fastening of the press portion 400, so that the pressed and fastened scheme of the top cover 300 is completed, the pressed and fastened by the pressed top cover 300 and the liner 200 are fastened, and the top cover 200 is prevented from being ejected from the upper portion of the top 100 in a use process. It should be noted that, in order to make the press-buckling tool 500 better press-buckle the end portion of the bushing mounting portion 120, it is preferable that the press-buckling tool 500 and the bushing mounting portion 120 are disposed obliquely with respect to each other so as to ensure that the end portion of the bushing mounting portion 120 is deformed inward toward the top cover 300.

It should be understood that, in fig. 3, to illustrate that the end of the liner mounting portion 120 away from the foundation 110 is pressed, the portion of the end of the liner mounting portion 120 away from the foundation 110 is overlapped with the press-buckling tool 500, and in actual construction, the two are contacted and then the end of the liner mounting portion 120 away from the foundation 110 is deformed toward the top cover 300.

Specifically, in this embodiment, when the press-buckling tool 500 extrudes the outer edge of the end portion of the liner installation portion 120 away from the foundation 110, the position of the liner installation portion 120 close to the top cover 300 will deform, so that the end portion of the liner installation portion 120 away from the foundation 110 can be deformed more conveniently, the wall thickness of the liner installation portion 120 at the position close to the top cover 300 can be set thinner than other positions, and when the press-buckling tool 500 applies a force to the liner installation portion 120, deformation is easier to occur.

More specifically, in some embodiments, a deformation groove portion may be further disposed on the inner side wall of the bushing mounting portion 120 near the top cover 300 and at a position where deformation occurs, where the deformation groove portion may be in a ">" shape or an arc groove, so that the wall thickness of the bushing mounting portion 120 near the top cover 300 is changed by the deformation groove portion, and at the same time, the bushing mounting portion 120 is easier to deform toward the top cover 300 when being acted on by the press fastening tool 500, and the inner side wall surface of the bushing mounting portion 120 is attached to the outer surface of the outer peripheral edge of the bushing 200.

The embodiment of the present embodiment also discloses a tower top press-mounting structure assembly of an air spring, referring to fig. 1, in a cross-sectional view taken along an axial direction of the air spring, a side wall of the bushing mounting portion 120 extends along the axial direction, and a bending angle of the pressing portion 400 with respect to the axial direction is in a range of 30 ° to 50 °. Specifically, the axial direction is shown as the a direction in fig. 1, and the radial direction is shown as the B direction in fig. 1.

Specifically, in this embodiment, the bending angle of the pressing portion 400 with respect to the axial direction may be any value within a range of 30 °, 40 °, 45 °, 50 °, or 30 ° to 50 °, so as to ensure that the pressing portion 400 can press against the outer periphery of the end surface of the top cover 300.

The embodiment of the present embodiment also discloses a tower top press-mounting structure assembly of an air spring, referring to fig. 1, in a cross-sectional view taken along an axial direction of the air spring, an outer sidewall of the pressing portion 400 and an outer sidewall of the bushing mounting portion 120 form a smooth transition. The end of the pressing portion 400 remote from the bushing mounting portion 120 is bent inward in the radial direction and protrudes from the inner side wall of the bushing mounting portion 120.

Specifically, in the present embodiment, the outer sidewall of the pressing part 400 is smoothly transited with the outer sidewall of the bushing mounting part 120, and the air spring having such a structure is convenient to install in actual use and application, and does not interfere with other structures. The pressing part 400 protrudes from the inner sidewall of the bush mounting part 120 at an end far from the bush mounting part 120, and can press-fit and fix the top cover 300 and the bush 200 more preferably.

The embodiment of the present embodiment also discloses a tower top press-mounting structure assembly of an air spring, please refer to fig. 1, a mounting table 130 is disposed on a side of the bushing mounting portion 120 away from the pressing portion 400, and an end of the bushing 200 away from the pressing portion 400 is disposed on the mounting table 130.

The side end surface of the bush 200 away from the pressing portion 400 abuts against the table surface of the mount 130, and the center hole 210 of the bush 200 is aligned with the center hole 210 axis of the table surface. The radially outer side wall surface of the bush 200 abuts against the radially inner side wall surface of the bush attaching portion 120.

With this structural design, the end surface of the side of the bushing 200 away from the pressing portion 400 abuts against the table surface of the mounting table 130, so that the bushing 200 is stably and reliably mounted on the inner side wall surface of the bushing mounting portion 120, and it should be noted that, referring to fig. 1 to 3, a blank portion in the drawings is a central hole 210, and the central hole 210 is used for mounting or connecting other structures.

The embodiment of the present embodiment also discloses an air spring tower top press-fitting structure assembly, wherein the outer ring of the bushing 200 is made of flexible material, and the top cover 300 is made of light metal. Wherein the end surface of the top cover 300 close to the lining 200 and the end surface of the lining 200 far from the foundation 110 are in a plane shape perpendicular to the axial direction, and the thickness dimension of the top cover 300 is smaller than the thickness dimension of the lining 200 in the axial direction. And the radially outer side wall surfaces of the bush 200 and the cap 300 are both interference-fitted with the inner side wall surface of the bush mounting portion 120.

Specifically, in this embodiment, the material of the liner 200 includes, but is not limited to, one or more of rubber, silica gel, a flexible polymer material, and a flexible fiber material, and the material of the top cover 300 may be, for example, an aluminum alloy, aluminum, a magnesium alloy, or the like, and the end surface of the top cover 300 near the liner 200 and the end surface of the liner 200 far from the foundation 110 are both in a planar shape perpendicular to the axial direction, that is, the end surfaces of the cover near the liner 200 and the end surface of the liner 200 far from the foundation 110 are flat end surfaces disposed in the radial direction.

The thickness dimension of the top cover 300 is smaller than the thickness dimension of the liner 200, for example, the thickness dimension of the liner 200 is 5mm, the thickness dimension of the top cover 300 is 3mm, the thickness dimension of the liner 200 is 6mm, the thickness dimension of the top cover 300 is 2mm, etc., which is not limited only in this embodiment.

The top cover 300 is used for assisting in press-fitting the bushing 200, and the radial outer side wall surfaces of the bushing 200 and the top cover 300 are in interference fit with the inner side wall surface of the bushing mounting portion 120, so that the air tightness of the bushing 200 and the air spring can be ensured, and the air spring can work normally.

It should be noted that, referring to fig. 1 to 3, the top cover 300 has an opening at one side, and those skilled in the art should understand that the structure of the top cover 300 can be designed and adjusted according to practical requirements, and is not limited to the disclosed structural shape.

Preferably, the bushing mounting portion 120 and the pressing portion 400 are made of a lightweight metal material. It is preferable to use a material that is lightweight and has excellent extensibility, and for example, the material of the bushing mounting portion 120 and the pressing portion 400 may be a material that is lightweight and has excellent extensibility, such as aluminum, an aluminum alloy, or a magnesium alloy.

Example 2

The implementation of this embodiment also discloses an air spring, which comprises an air spring body (not shown in the figure), and further comprises the top press-fitting structure assembly of the air spring of any one of embodiment 1, wherein the top press-fitting structure assembly is located at the top end of the air spring body.

It should be noted that, the air spring in this embodiment is a common air spring with a tower top 100 structure, and the structure and use of the air spring are the same as those of the prior art, so the specific structure of the air spring in this embodiment is not described again.

In summary, the present utility model discloses a tower top press-mounting structure assembly of an air spring, which comprises a tower top 100, a bushing 200, a top cover 300 and a pressing portion 400, wherein the tower top 100 is located at the top of the air spring, and the tower top 100 comprises a tower base 110 and an annular bushing mounting portion 120 protruding from the end surface of the tower base 110. The bushing 200 is annular and is positioned in the bushing mounting portion 120. The top cover 300 is positioned in the liner mounting portion 120 and is pressed against the end surface of the liner 200 remote from the foundation 110. The pressing portion 400 is disposed at an end of the liner mounting portion 120 away from the foundation 110 and is bent toward the inside of the liner mounting portion 120, and an inner end surface of the pressing portion 400 abuts against an end surface of the top cover 300 and at least partially covers an outer peripheral edge of the top cover 300 on a side away from the foundation 110. The pressing of the liner 200 can be achieved by providing the pressing portion 400 at the end of the liner mounting portion 120 away from the foundation 110, and the pressing portion 400 presses the outer end surface of the top cover 300 to press and fix the top cover 300 by covering the outer peripheral edge of the top cover 300 on the side away from the foundation 110. The screw thread structure or the spring retainer ring is not required to be arranged, after the bushing 200 and the top cover 300 are sequentially arranged in the bushing installation part 120 along the axial direction, the pressing part 400 is deformed by the pressing part 400 and is abutted against the outer end face of the top cover 300, so that the pressing can be finished, the quality requirement on the production process is low, and the device has the advantages of simple structure, low cost and high pressing efficiency.

More specifically, a simple description is given of the press-fitting process of the air spring top press-fitting structure assembly disclosed in this embodiment:

referring to fig. 1, before the bushing 200 and the top cover 300 are installed, a hollow cavity is formed in the middle of the bushing installation portion 120, the bushing 200 is pressed in the cavity along the axial direction, one side end surface of the bushing 200 is attached to the tower foundation 110, then the top cover 300 is pressed on the other side end surface of the bushing 200 away from the tower foundation 110 along the axial direction, the top cover 300 is attached to the other side end surface of the bushing 200, after the bushing 200 and the top cover 300 are installed, the pressing tool 500 is moved closer to the semi-assembly of the tower top 100, and the oblique cambered surface of the tool 500 is close to the installation portion 120.

Referring further to fig. 2, when the press-buckling tool 500 moves closer to the tower top 100, the press-buckling tool 500 is located at an outer edge of an end of the liner mounting portion 120 away from the tower foundation 110, and a side of the press-buckling tool 500, which is close to the liner mounting portion 120, has a press-buckling end face. When the end of the bushing installation portion 120 is pressed, please refer to fig. 3, firstly, the tower top 100 or the pressing tool 500 is moved, so that the end of the bushing installation portion 120 is pressed and buckled with the pressing end surface, then, a force is applied to the end of the bushing installation portion 120 by the pressing tool 500, so that the end of the bushing installation portion 120 is deformed, the inner wall surface of one side of the end of the bushing installation portion 120 is deformed towards one side of the top cover 300, finally, the inner wall surface is attached to the top cover 300, then, the tower top 100 rotates along the axial direction by taking the self axis as the rotation axis, so that the whole periphery of the bushing installation portion 120 or the pressing portion 400 is deformed, and then the end surface of the top cover 300 is pressed and buckled, finally, refer to fig. 1, the scheme of pressing and fixing the top cover 300 and the bushing 200 after being pressed is fixed by the pressing portion 400 is completed.

It is intended that other advantages and effects of the present utility model, in addition to those described in the specific embodiments, be readily apparent to those skilled in the art from the present disclosure. While the description of the utility model will be described in connection with the preferred embodiments, it is not intended to limit the inventive features to the implementation. Rather, the purpose of the utility model described in connection with the embodiments is to cover other alternatives or modifications, which may be extended by the claims based on the utility model. The foregoing description contains many specifics, other embodiments, and examples of specific details for the purpose of providing a thorough understanding of the utility model. Furthermore, some specific details are omitted from the description in order to avoid obscuring the utility model. It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other.

It should be noted that in this specification, like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present embodiment, it should be noted that the azimuth or positional relationship indicated by the terms "upper", "lower", "inner", "bottom", etc. are based on the azimuth or positional relationship shown in the drawings, or the azimuth or positional relationship in which the inventive product is conventionally put in use, are merely for convenience of describing the present utility model and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific azimuth, be configured and operated in a specific azimuth, and therefore should not be construed as limiting the present utility model.

The terms "first," "second," and the like are used merely to distinguish between descriptions and are not to be construed as indicating or implying relative importance.

In the description of the present embodiment, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present embodiment can be understood in a specific case by those of ordinary skill in the art.

While the utility model has been shown and described with reference to certain preferred embodiments thereof, it will be understood by those skilled in the art that the foregoing is a further detailed description of the utility model with reference to specific embodiments, and it is not intended to limit the practice of the utility model to those descriptions. Various changes in form and detail may be made therein by those skilled in the art, including a few simple inferences or alternatives, without departing from the spirit and scope of the present utility model.

Claims (10)

1. An air spring's top of tower pressure equipment structure assembly, characterized in that includes:

the tower top is positioned at the top of the air spring and comprises a tower base and an annular bushing mounting part protruding out of the end surface of the tower base;

a bushing having a ring shape and positioned in the bushing mounting portion;

the top cover is positioned in the bushing installation part and is pressed on the end surface of the bushing far away from the tower foundation; and

and the pressing part is arranged at the end part of the lining installation part, which is far away from the tower foundation, and is bent towards the inner side of the lining installation part, and the inner side end surface of the pressing part is abutted with the end surface of the top cover and at least partially covers the peripheral edge of the top cover, which is far away from one side of the tower foundation.

2. The air spring overhead press-fit structure assembly according to claim 1, wherein the pressing portions are arranged on an end face of the bush mounting portion remote from the foundation at intervals in a circumferential direction of the bush mounting portion.

3. The overhead press-fit structural assembly of an air spring according to claim 2, wherein the pressing portion is integrally formed with the bush mounting portion.

4. The air spring overhead press-fit structure assembly of claim 2, wherein the pressing portion is formed by bending an end portion of the bush mounting portion away from the base.

5. The air spring overhead press-fit structure assembly according to claim 3 or 4, wherein, in a sectional view taken along an axial direction of the air spring, a side wall of the bush mounting portion extends along the axial direction, and a bending angle of the pressing portion with respect to the axial direction is in a range of 30 ° to 50 °.

6. The air spring overhead press-fit structure assembly of claim 5, wherein an outer side wall of the pressing portion and an outer side wall of the bush mounting portion make a smooth transition in a sectional view taken along an axial direction of the air spring; and is also provided with

The pressing portion is bent inward in a radial direction away from an end of the bushing mounting portion and protrudes from an inner side wall of the bushing mounting portion.

7. The air spring overhead press-fit structure assembly according to claim 6, wherein a mounting table is provided on a side of the bush mounting portion remote from the pressing portion, and an end of the bush remote from the pressing portion is provided on the mounting table; wherein the method comprises the steps of

The end face of one side of the bushing, which is far away from the pressing part, is abutted against the table top of the mounting table, and the central hole of the bushing is aligned with the central hole axis of the table top; the outer side wall surface of the bush in the radial direction is in contact with the inner side wall surface of the bush attaching portion.

8. The air spring overhead press-fit structural assembly of claim 7, wherein the bushing outer race is made of a flexible material and the top cover is made of a lightweight metal; wherein the method comprises the steps of

The end face of the top cover, which is close to the lining, and the end face of the lining, which is far away from the foundation, are in a plane shape perpendicular to the axial direction, and the thickness dimension of the top cover is smaller than that of the lining in the axial direction; and is also provided with

The bushing and the outer side wall surface of the top cover in the radial direction are in interference fit with the inner side wall surface of the bushing installation part.

9. The overhead press-fit structural assembly of an air spring according to claim 8, wherein the bushing mounting portion and the pressing portion are made of a lightweight metal material.

10. An air spring comprising an air spring body, further comprising the air spring overhead press-fit structural assembly of any one of claims 1-9, the overhead press-fit structural assembly being located at a top end of the air spring body.