CN222798023U - Split type air spring double-cavity structure - Google Patents

Abstract

The utility model provides a split type air spring double-cavity structure, which comprises an upper air chamber upper cover and an upper air chamber lower cover, wherein the upper air chamber lower cover is provided with a lower air chamber air passage, and the lower air chamber air passage directly penetrates out of the upper air chamber upper cover, so that a sealing ring is prevented from being used between the upper air chamber upper cover and the lower air chamber upper cover, and failure caused by aging, expansion, contraction and the like of the sealing ring is also avoided.

Description

Split type air spring double-cavity structure

Technical Field

The utility model relates to the technical field of air springs, in particular to a split type air spring double-cavity structure.

Background

The stiffness of the air spring is related to its internal volume, the greater the internal volume the less the stiffness. Different road conditions have different demands on the rigidity of the air spring, so that the double-cavity air spring is arranged, and different driving road conditions can be adapted through the switching of the volumes of the single cavity and the double cavities.

The utility model discloses a rear air spring double-cavity structure (CN 218063189U), which mainly comprises an upper air chamber upper cover and a lower air chamber lower cover, wherein the upper air chamber upper cover and the lower air chamber upper cover are connected through an upper sealing ring and a lower sealing ring to realize sealing of a junction, or the sealing of the junction is realized through interference fit between a steel ring and an upper mounting seat and a lower mounting seat, and an electromagnetic valve is axially fixed on the bottom end face of the electromagnetic valve lower mounting seat through an electromagnetic valve stop block and a clamp spring.

In the use of the air spring, due to vibration and volume change of the air spring, muddy water enters an upper sealing groove of the electromagnetic valve through a gap between an electromagnetic valve stop block and an upper mounting seat, and muddy water enters the sealing groove to cause sealing failure, so that the air spring is invalid, therefore, a main cavity and an auxiliary cavity are corresponding to two structures between an upper cover and a lower cover of the upper air chamber and between the electromagnetic valve stop block and the upper mounting seat in the whole air spring, and sealing failure can be caused at any position, so that the whole double-cavity air spring is invalid.

Disclosure of utility model

The utility model aims to solve the problem of providing a split type air spring double-cavity structure with good sealing performance between an upper air chamber upper cover and a lower air chamber upper cover and between an electromagnetic valve stop block and an upper mounting seat.

The utility model solves the problems by adopting the technical scheme that the split type air spring double-cavity structure comprises:

A lower chamber structure;

An upper chamber structure including an upper chamber upper cover and an upper chamber lower cover, the upper chamber lower cover having a lower chamber air passage, the lower end of the lower chamber air passage being arranged to communicate with the lower chamber structure, the upper end being arranged to pass through the upper chamber upper cover and communicate with the outside, and

The electromagnetic valve structure is arranged between the lower cavity structure and the upper cavity structure so as to control the inner volumes of the lower cavity structure and the upper cavity structure, the electromagnetic valve structure comprises an electromagnetic valve, an electromagnetic valve stop block and a dust ring, the electromagnetic valve is fixed on the upper air chamber upper cover through the electromagnetic valve stop block, the dust ring is arranged on the upper end face of the electromagnetic valve, and the side face of the dust ring is matched with the side wall of the upper air chamber upper cover so as to prevent muddy water from entering the upper cavity structure.

Compared with the prior art, the upper chamber structure comprises the upper air chamber upper cover and the upper air chamber lower cover, the upper air chamber lower cover is provided with the lower chamber air passage, and the lower chamber air passage directly penetrates out of the upper air chamber upper cover, so that a sealing ring is prevented from being used between the upper air chamber upper cover and the lower air chamber upper cover, and failure caused by aging, thermal expansion, cold contraction and other factors of the sealing ring is also avoided.

The split type air spring double-cavity structure comprises an upper air chamber and a lower air chamber, wherein the upper air chamber is provided with an air passage through hole, the lower air chamber is arranged to penetrate out of the air passage through hole, the air passage through hole comprises a sealing part arranged at least one end, and the sealing part is used for filling a gap between the air passage through hole and the lower air chamber.

The split type air spring double-cavity structure is characterized in that an upper air chamber upper cover and an upper air chamber lower cover are made of metal materials, and sealing parts are formed by welding the upper air chamber upper cover and the upper air chamber lower cover.

The split type air spring double-cavity structure comprises an upper air chamber cover, wherein the upper air chamber cover comprises a conical portion, a dust ring is fixed to the conical portion, and the side face of the dust ring is a conical surface and is in interference fit with the side face of the conical portion.

The split type air spring double-cavity structure comprises a first tension layer and a second tension layer, wherein the acting force of the first tension layer and the conical part is smaller than the acting force of the second tension layer and the conical part, so that the first tension layer deforms before the second tension layer when the conical part vibrates or deforms.

The split type air spring double-cavity structure further comprises at least one sealing ring, wherein the sealing ring is arranged between the conical part and the side wall of the electromagnetic valve.

The utility model relates to a split type air spring double-cavity structure, wherein the upper cavity structure further comprises,

A piston sleeve, wherein the piston sleeve is arranged outside the lower cover of the upper air chamber;

An upper dust cap, wherein the upper dust cap is disposed outside the piston sleeve;

a dust cover pad, wherein the dust cover pad is disposed at a lower end of the upper dust cover, and

An upper clip, wherein the upper clip is disposed at a lower end of the upper dust cap so as to connect the upper dust cap with the dust cap pad.

The utility model relates to a split type air spring double-cavity structure, wherein the lower cavity structure comprises,

A bag skin;

the upper air chamber buckling ring is used for fixing the bag cover at the lower end of the upper air chamber lower cover;

A casing, wherein the casing is disposed outside the bladder;

the lower end of the bag skin is arranged on the lower seat;

The lower end of the bag skin is fixed on the lower seat through the bag skin pile ring;

A lower dust cover, wherein the lower dust cover is arranged outside the lower end of the bag skin and the lower end of the lower dust cover is fixedly connected with the lower seat, and

The lower clamp is used for fixing the upper end of the lower dust cover.

Drawings

FIG. 1 is a schematic perspective view of the present utility model;

FIG. 2 is a schematic cross-sectional view of the present utility model;

FIG. 3 is an enlarged partial schematic view of the lower chamber gas circuit;

FIG. 4 is a perspective view of a dust ring;

FIG. 5 is a schematic cross-sectional view of a dust collar;

fig. 6 is a schematic cross-sectional view of a solenoid valve structure.

Detailed Description

Before any embodiments of the utility model are explained in detail, it is to be understood that the utility model is not limited in its application to the details of construction and the arrangement of components set forth in the following description or illustrated in the following drawings. The utility model is capable of other embodiments and of being practiced or of being carried out in various ways. Also, it is to be understood that the phraseology and terminology used herein is for the purpose of description and should not be regarded as limiting. The use of "including" or "having" and variations thereof herein is meant to encompass the items listed thereafter and equivalents thereof as well as additional items. Unless specified or limited otherwise, the terms "mounted," "connected," "supported," and "coupled" and variations thereof are used broadly and encompass both direct and indirect mountings, connections, supports, and couplings. Furthermore, "connected" and "coupled" are not restricted to physical or mechanical connections or couplings.

Also, in the present disclosure, the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the azimuth or positional relationships indicated in the drawings, which are merely for convenience of description and to simplify the description, and do not denote or imply that the apparatus or elements in question must have a particular azimuth, be configured and operated in a particular azimuth, and thus the terms should not be construed as limiting the utility model, and in the second aspect, the terms "a" and "an" should be construed as "at least one" or "one or more," i.e., in one embodiment, the number of one element may be one, while in another embodiment, the number of the element may be plural, and the term "a" should not be construed as limiting the number.

It will be appreciated by persons skilled in the art that the embodiments of the utility model described above and shown in the drawings are by way of example only and are not limiting. The objects of the present utility model have been fully and effectively achieved. The functional and structural principles of the present utility model have been shown and described in the examples and embodiments of the utility model may be modified or practiced without departing from the principles described.

Embodiments of the present utility model are further described below with reference to the accompanying drawings.

Referring to fig. 1-6, a split type air spring dual-chamber structure comprises a lower chamber structure 1, an upper chamber structure 2 and an electromagnetic valve structure 3, wherein the upper chamber structure 2 comprises an upper air chamber upper cover 21 and an upper air chamber lower cover 22, the upper air chamber lower cover 22 is provided with a lower chamber air passage 221, the lower end of the lower chamber air passage 221 is communicated with the lower chamber structure 1, the upper end is arranged to penetrate through the upper air chamber upper cover 21 and communicate with the outside, the electromagnetic valve structure 3 is arranged between the lower chamber structure 1 and the upper chamber structure 2 so as to control the inner volumes of the lower chamber structure 1 and the upper chamber structure 2, the electromagnetic valve structure 3 comprises an electromagnetic valve 31, an electromagnetic valve stop 32 and a dust ring 33, the electromagnetic valve 31 is fixed on the upper air chamber upper cover 21 through the electromagnetic valve stop 32, the dust ring 33 is arranged on the upper end surface of the electromagnetic valve 31, and the side surface of the dust ring 33 is arranged to be matched with the side wall of the upper air chamber upper cover 21 so as to prevent muddy water from entering the upper chamber structure 2.

In actual use, the upper chamber structure 2 comprises an upper chamber upper cover 21 and an upper chamber lower cover 22, wherein the upper chamber lower cover 22 is provided with a lower chamber air passage 221, and the lower chamber air passage 221 directly penetrates out of the upper chamber upper cover 21, so that a sealing ring is prevented from being used between the upper chamber upper cover and the lower chamber upper cover, and failure caused by aging, expansion due to heat, contraction due to cold and the like of the sealing ring is also avoided, the electromagnetic valve structure 3 comprises an electromagnetic valve 31, an electromagnetic valve stop block 32 and a dust ring 33, the dust ring 33 is arranged on the upper end surface of the electromagnetic valve 31, the side surface of the dust ring 33 is matched with the side wall of the upper chamber upper cover 21, and when the air spring vibrates and changes in volume in use, the dust ring 33 can deform along with the deformation and enables the side surface of the dust ring 33 to be always attached to the side wall of the upper chamber upper cover 21, so that the muddy water is prevented from entering the upper chamber structure 2 in the use process, and the sealing failure is prevented.

With continued reference to fig. 2 and 3, the upper chamber upper cover 21 has an air passage hole 211, the lower chamber air passage 221 is disposed to pass through the air passage hole 211, the air passage hole 211 includes a sealing portion 2111 disposed at least one end, and the sealing portion 2111 is used to fill a gap between the air passage hole 211 and the lower chamber air passage 221.

Specifically, the sealing between the upper and lower covers of the upper air chamber in the prior art depends on an upper sealing ring and a lower sealing ring, and when the sealing ring fails, air leakage is caused, while the lower chamber air channel 221 of the utility model is arranged to penetrate out of the air channel through hole 211, so that the sealing ring used in the prior art is omitted, and the failure risk caused by ageing, thermal expansion and contraction, dimensional errors, deformation, burrs and the like of the sealing ring is avoided, and instead, the utility model adopts the sealing part 2111 and is arranged at least one end of the air channel through hole 211, so that the sealing is ensured.

Referring further to fig. 2 and 3, in some embodiments, the upper chamber upper cover 21 and the upper chamber lower cover 22 are made of metal, and the sealing portion 2111 is formed by welding the upper chamber upper cover 21 and the upper chamber lower cover 22.

Further, the sealing portions 2111 are provided at the upper and lower ends of the air passage through hole 211, and since the sealing portions 2111 are formed by metal welding instead of separately mounted parts, problems such as expansion and contraction due to heat, dimensional errors, deformation, burrs, etc. can be avoided, thereby improving the sealing degree, and in addition, the sealing portions 2111 formed by metal welding contribute to improving the structural strength.

With continued reference to fig. 4-6, the upper air chamber cover 21 includes a tapered portion 212, the dust ring 33 is fixed to the tapered portion 212, and the side surface of the dust ring 33 is tapered and is in interference fit with the side surface of the tapered portion 212.

It should be noted that, the dust ring 33 is made of a deformable elastic material, and under the interference fit arrangement of the dust ring 33 and the upper air chamber upper cover 21, the side surface of the dust ring 33 and the side surface of the conical portion 212 can be always kept in fit under the vibration condition, and the conical surfaces of the two are favorable for the installation and mutual fixation of the dust ring 33.

With continued reference to fig. 4 and 5, the dust ring 33 includes a first tension layer 331 and a second tension layer 332, and the forces of the first tension layer 331 and the tapered portion 212 are set smaller than the forces of the second tension layer 332 and the tapered portion 212, so that the first tension layer 331 deforms before the second tension layer 332 when the tapered portion 212 vibrates or deforms.

Specifically, the dual-cavity air spring is applied to the chassis of an automobile, and in the running process of the automobile, the automobile can vibrate and also cause the dual-cavity air spring to shrink so as to drive the upper air chamber cover 21 to vibrate and deform, when the upper air chamber cover 21 vibrates and deforms, the first tension layer 331 deforms before the second tension layer 332, so that the second tension layer 332 is always kept in contact with the upper air chamber cover 21 through absorbing the vibration and deformation generated by the upper air chamber cover 21 by deformation, and muddy water is prevented from penetrating between the electromagnetic valve stop block and the upper mounting seat.

With continued reference to fig. 6, the solenoid valve structure 3 further includes at least one sealing ring 34, wherein the sealing ring 34 is disposed between the tapered portion 212 and the sidewall of the solenoid valve 31, and the sealing performance between the solenoid valve stop and the upper mounting seat is better by the arrangement of the at least one sealing ring 34, so as to further prevent muddy water from penetrating.

Referring further to fig. 1 and 2, the upper chamber structure 2 further includes a piston sleeve 23, an upper dust cap 24, a dust cap liner 25, and an upper clip 26, wherein the piston sleeve 23 is disposed outside the upper chamber lower cap 22, wherein the upper dust cap 24 is disposed outside the piston sleeve 23, wherein the dust cap liner 25 is disposed at a lower end of the upper dust cap 24, and wherein the upper clip 26 is disposed at a lower end of the upper dust cap 24 to connect the upper dust cap 24 with the dust cap liner 25.

Referring to fig. 1 and 2, the lower chamber structure 1 includes a bag cover 11, an upper air chamber buckling ring 12, a protective cylinder 13, a lower seat 14, a bag cover stack ring 15, a lower dust cover 16 and a lower clamp 17, wherein the upper air chamber buckling ring 12 is used for fixing the bag cover 11 at the lower end of the lower cover 22 of the upper air chamber, the protective cylinder 13 is arranged outside the bag cover 11, the lower end of the bag cover 11 is arranged at the lower seat 14, the lower end of the bag cover 11 is fixed at the lower seat 14 through the bag cover stack ring 15, the lower dust cover 16 is arranged outside the lower end of the bag cover 11, the lower end of the lower dust cover 16 is fixedly connected with the lower seat 14, and the lower clamp 17 is used for fixing the upper end of the lower dust cover 16.

The foregoing is illustrative of the preferred embodiments of the present utility model and is not to be construed as limiting the claims. The present utility model is not limited to the above embodiments, and the specific structure thereof is allowed to vary. All changes which come within the meaning and range of equivalency of the claims are to be embraced within their scope.

Claims (8)

1. A split air spring dual chamber structure comprising:

A lower chamber structure (1);

An upper chamber structure (2), wherein the upper chamber structure (2) comprises an upper air chamber upper cover (21) and an upper air chamber lower cover (22), the upper air chamber lower cover (22) is provided with a lower chamber air passage (221), the lower end of the lower chamber air passage (221) is arranged to be communicated with the lower chamber structure (1), the upper end is arranged to penetrate from the upper air chamber upper cover (21) and be communicated with the outside, and

The electromagnetic valve structure (3) is arranged between the lower cavity structure (1) and the upper cavity structure (2) so as to control the inner volumes of the lower cavity structure (1) and the upper cavity structure (2), the electromagnetic valve structure (3) comprises an electromagnetic valve (31), an electromagnetic valve stop block (32) and a dust ring (33), the electromagnetic valve (31) is fixed on the upper air chamber upper cover (21) through the electromagnetic valve stop block (32), the dust ring (33) is arranged on the upper end face of the electromagnetic valve (31), and the side face of the dust ring (33) is matched with the side wall of the upper air chamber upper cover (21) so as to prevent muddy water from entering the upper cavity structure (2).

2. The split type air spring double-cavity structure according to claim 1, wherein the upper air chamber upper cover (21) is provided with an air passage through hole (211), the lower chamber air passage (221) is arranged to penetrate out of the air passage through hole (211), the air passage through hole (211) comprises a sealing part (2111) arranged at least one end, and the sealing part (2111) is used for filling a gap between the air passage through hole (211) and the lower chamber air passage (221).

3. The split type air spring double-cavity structure according to claim 2, wherein the upper air chamber upper cover (21) and the upper air chamber lower cover (22) are made of metal materials, and the sealing portion (2111) is formed by welding the upper air chamber upper cover (21) and the upper air chamber lower cover (22).

4. The split type air spring double-cavity structure according to claim 1, wherein the upper air chamber upper cover (21) comprises a conical portion (212), the dust ring (33) is fixed to the conical portion (212), and the side face of the dust ring (33) is conical and is in interference fit with the side face of the conical portion (212).

5. The split-type air spring double-cavity structure as claimed in claim 4, wherein the dust ring (33) comprises a first tension layer (331) and a second tension layer (332), and the acting force of the first tension layer (331) and the conical portion (212) is smaller than the acting force of the second tension layer (332) and the conical portion (212), so that the first tension layer (331) deforms before the second tension layer (332) when the conical portion (212) vibrates or deforms.

6. The split air spring dual chamber structure of claim 5, wherein the solenoid valve structure (3) further comprises at least one sealing ring (34), the sealing ring (34) being disposed between the tapered portion (212) and a sidewall of the solenoid valve (31).

7. The split air spring dual chamber structure of claim 1, wherein said upper chamber structure (2) further comprises,

A piston sleeve (23), wherein the piston sleeve (23) is arranged outside the upper air chamber lower cover (22);

an upper dust cap (24), wherein the upper dust cap (24) is disposed outside the piston sleeve (23);

A dust cover pad (25), wherein the dust cover pad (25) is provided at the lower end of the upper dust cover (24), and

An upper clip (26), wherein the upper clip (26) is disposed at a lower end of the upper dust cap (24) to connect the upper dust cap (24) with a dust cap liner (25).

8. The split air spring dual chamber structure of claim 1, wherein the lower chamber structure (1) comprises,

A bag cover (11);

An upper air chamber buckling ring (12), wherein the upper air chamber buckling ring (12) is used for fixing the capsule shell (11) at the lower end of the upper air chamber lower cover (22);

-a casing (13), wherein the casing (13) is arranged outside the capsule (11);

A lower seat (14), wherein the lower end of the capsule (11) is arranged on the lower seat (14);

The lower end of the bag skin (11) is fixed on the lower seat (14) through the bag skin pile ring (15);

A lower dust cover (16), wherein the lower dust cover (16) is arranged outside the lower end of the capsule (11), and the lower end of the lower dust cover (16) is fixedly connected with the lower seat (14), and

And the lower clamp (17) is used for fixing the upper end of the lower dust cover (16).