CN215214515U

CN215214515U - Air spring with protection structure

Info

Publication number: CN215214515U
Application number: CN202121347937.8U
Authority: CN
Inventors: 王冕; 范伟良; 高跃
Original assignee: Zhejiang Kong Hui Automobile Technology Co ltd
Current assignee: Zhejiang Kong Hui Automobile Technology Co ltd
Priority date: 2021-06-17
Filing date: 2021-06-17
Publication date: 2021-12-17
Anticipated expiration: 2031-06-17

Abstract

The utility model provides an air spring with protective structure, include: the air bag, the first end cover and the second end cover, wherein two ends of the air bag are respectively buckled and pressed on the outer walls of the first end cover and the second end cover, and a sealed chamber is formed by the air bag, the first end cover and the second end cover; further comprising: the protective sleeve is used for protecting the air bag, and the protective sleeve buckling and pressing ring is used for fixing the air bag and the protective sleeve; the protective cylinder sleeve is arranged on the periphery of the air bag, the protective cylinder buckling and pressing ring supports the protective cylinder from the inside of the air bag and buckles the air bag from outside to inside to form a structure which sequentially comprises the protective cylinder buckling and pressing ring, the air bag and the protective cylinder from inside to outside, and after buckling and pressing, the protective cylinder forms a wavy structure which is used for limiting the protective cylinder buckling and pressing ring. The utility model discloses an increase and protect a structure, guarantee that the gasbag carries out work in the blasting volume, prevent that the gasbag from surpassing its blasting volume because of filling high-pressure gas and leading to the blasting, protect a still protectable gasbag and not collided with by external sharp-pointed object article.

Description

Air spring with protection structure

Technical Field

The utility model relates to an air spring field, in particular to air spring with protective structure.

Background

The air spring is a nonmetal spring which realizes the vibration isolation and the buffering action by adding high-pressure air into a flexible closed container and utilizing the compressibility of the air. The characteristic leads to that the explosion-proof capability of the air bag has certain requirements, and because the air bag has certain expansion outer diameter, the air bag needs to be protected to work in the explosion volume and to be protected from being collided by external sharp objects, and the prior art lacks the protection of the air bag.

SUMMERY OF THE UTILITY MODEL

The utility model provides an air spring with protection architecture for solve above-mentioned problem.

In order to achieve the above purpose, the utility model adopts the following specific technical scheme:

an air spring with protective structure comprising: the air bag, the first end cover and the second end cover, wherein two ends of the air bag are respectively buckled and pressed on the outer walls of the first end cover and the second end cover, and a sealed chamber is formed by the air bag, the first end cover and the second end cover; further comprising: the protective sleeve is used for protecting the air bag, and the protective sleeve buckling and pressing ring is used for fixing the air bag and the protective sleeve; the protective cylinder sleeve is arranged on the periphery of the air bag, the protective cylinder buckling and pressing ring supports the protective cylinder from the inside of the air bag and buckles the air bag from outside to inside to form a structure which sequentially comprises the protective cylinder buckling and pressing ring, the air bag and the protective cylinder from inside to outside, and after buckling and pressing, the protective cylinder forms a wavy structure which is used for limiting the protective cylinder buckling and pressing ring.

Preferably, the device further comprises a first end cover buckling ring and a second end cover buckling ring; the first end cover buckling ring is used for buckling and pressing the outer wall of the air bag to form a structure which sequentially comprises a first end cover, the air bag and the first end cover buckling ring from inside to outside, and the air bag is sealed; the second end cover buckling ring is used for buckling the outer wall of the air bag, a structure which sequentially comprises a second end cover, the air bag and the second end cover buckling ring from inside to outside is formed, and the air bag is sealed.

Preferably, the safety protection device further comprises a limiting rubber for preventing external impurities from contacting the air bag which is not protected by the protective sleeve, and a limiting rubber hoop for fixing the limiting rubber and the protective sleeve; the limiting rubber sleeve is arranged on the periphery of the air bag which is not covered by the protective cylinder, one end, close to the protective cylinder, of the limiting rubber is fixed on the outer wall of the protective cylinder through a limiting rubber hoop, and one end, far away from the protective cylinder, of the limiting rubber is connected with the second end cover in a clamping mode.

Preferably, the protective sleeve is provided with a radial convex structure for preventing the limiting rubber hoop from falling off; the radial bulge structure is positioned below the limiting rubber hoop, and the maximum diameter of the radial bulge structure is larger than the outer diameter of the limiting rubber hoop.

Preferably, the air bag further comprises a piston for changing the effective diameter of the air bag, and the piston is sleeved on the outer wall of the first end cover and abuts against the air bag.

Preferably, the first end cover and the inner wall of the piston are provided with reinforcing ribs for improving strength.

Preferably, the air bag further comprises a backing ring for preventing the air bag from moving relative to the outer wall of the second end cover buckling ring; the backing ring is sleeved on the periphery of the second end cover buckling ring and is abutted against the second end cover, and the surface in contact with the air bag is a curved surface.

Preferably, the grommet has a longitudinal cross-section in the form of a right triangle with the hypotenuse of the curve.

Preferably, the protection cover is used for preventing external impurities from contacting the air bag, the protection cover gasket is used for installing the protection cover, and the protection cover hoop is used for fixing the protection cover and the protection cover gasket; one end of the protective cover close to the first end cover is clamped with the first end cover, the protective cover liner is sleeved on the outward protruding part of the wavy structure, one end of the protective cover far away from the first end cover is fixed on the outer wall of the protective cover liner through the protective cover hoop, and a structure which is sequentially a protective cylinder, the protective cover liner, the protective cover and the protective cover hoop is formed from inside to outside.

The utility model discloses can gain following technological effect:

the protective cylinder structure is added, the air bag is guaranteed to work in the blasting volume, the air bag is prevented from blasting due to the fact that high-pressure gas is filled into the air bag to exceed the blasting volume, and the protective cylinder can also protect the air bag from being collided with by external sharp objects.

Drawings

FIG. 1 is a schematic structural view of an air spring according to an embodiment of the present invention;

figure 2 is a close-up view of a retaining collar crimping ring portion of an air spring according to an embodiment of the present invention.

Wherein the reference numerals include: the air bag comprises an air bag 1, a first end cover 2, a second end cover 3, a protective cylinder 4, a protective cylinder buckling and pressing ring 5, a first end cover buckling and pressing ring 6, a second end cover buckling and pressing ring 7, limiting rubber 8, a limiting rubber hoop 9, a piston 10, a backing ring 11, a protective cover 12, a protective cover liner 13, a protective cover hoop 14, a wavy structure 4-1 and a radial protruding structure 4-2.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and do not constitute limitations on the invention.

As shown in fig. 1 and 2, an air spring with a protective structure includes: the air spring comprises an air bag 1, a first end cover 2 and a second end cover 3, wherein two ends of the air bag 1 are respectively buckled and pressed on the outer walls of the first end cover 2 and the second end cover 3, the air bag 1, the first end cover 2 and the second end cover 3 jointly form a sealed chamber, the first end cover 2 can be made of aluminum or plastic, and the first end cover 2 is prevented from being too heavy to influence the performance of the air spring; further comprising: the protective sleeve 4 is used for protecting the air bag 1, and the protective sleeve buckling ring 5 is used for fixing the air bag 1 and the protective sleeve 4, the material of the protective sleeve 4 is light metal or light alloy material such as aluminum, the strength of the protective sleeve 4 is ensured, and the weight of the protective sleeve 4 is reduced; the air bag 1 has a certain blasting diameter and a certain blasting volume, the pile casing 4 is sleeved on the periphery of the air bag 1 and covers the outer wall of the air bag 1 to limit the expansion outer diameter of the air bag 1, and the design of the pile casing 4 is determined according to the blasting diameter and the blasting volume of the air bag 1; the protective cylinder buckling ring 5 supports the protective cylinder 4 from the inner part of the air bag 1 and buckles the air bag 1 from outside to inside to form a structure which sequentially comprises the protective cylinder buckling ring 5, the air bag 1 and the protective cylinder 4 from inside to outside, after buckling, the protective cylinder 4 forms a wavy structure 4-1 for limiting the protective cylinder buckling ring 5, the diameter of an inward concave part of the wavy structure 4-1 is smaller than the outer diameter of the protective cylinder buckling ring 5, the position of the buckling ring is prevented from jumping, the diameters of the protective cylinder buckling ring 5 are unchanged before and after buckling, and the design of the protective cylinder buckling ring 5 is determined according to the assembly diameters of the protective cylinder 4 and the air bag 1.

In an embodiment of the present invention, the present invention further comprises a first end cap retaining ring 6 and a second end cap retaining ring 7; the first end cover buckling ring 6 is used for buckling and pressing the outer wall of the airbag 1, which is in contact with the first end cover 2, so that a structure comprising the first end cover 2, the airbag 1 and the first end cover buckling ring 6 in sequence from inside to outside is formed, the first end cover 2 is ensured to be stably connected with the airbag 1, and the airbag 1 and the first end cover 2 are sealed; the second end cover buckling ring 7 is used for buckling and pressing the outer wall of the air bag 1 in contact with the second end cover 3, a structure that the second end cover 3, the air bag 1 and the second end cover buckling ring 7 are sequentially arranged from inside to outside is formed, the second end cover 3 is stably connected with the air bag 1, and the air bag 1 and the second end cover 3 are sealed.

In an embodiment of the present invention, the device further comprises a limiting rubber 8 for preventing external impurities from contacting the airbag 1 not protected by the protection tube 4, and a limiting rubber hoop 9 for fixing the limiting rubber 8 and the protection tube 4; the limiting rubber 8 is sleeved on the periphery of the air bag 1 which is not covered by the protective cylinder 4, so that the air bag 1 is prevented from touching the outside to generate damage in the working process; the one end that spacing rubber 8 is close to protecting section of thick bamboo 4 is fixed at the outer wall of protecting section of thick bamboo 4 through spacing rubber hoop 9, forms from interior to exterior in proper order for protecting section of thick bamboo 4, spacing rubber 8 and spacing rubber hoop 9's structure, ensures that spacing rubber 8 is connected with the firm of protecting section of thick bamboo 4, and spacing rubber 8 keeps away from the one end and the 3 joints of second end cover of protecting section of thick bamboo 4.

In one embodiment of the utility model, the protective cylinder 4 is provided with a radial bulge structure 4-2 for preventing the limiting rubber hoop 9 from falling off; the radial convex structure 4-2 is positioned below the limiting rubber hoop 9, and the maximum diameter of the radial convex structure 4-2 is larger than the outer diameter of the limiting rubber hoop 9, so that the limiting rubber hoop 9 is prevented from falling off in the working process of the air spring.

In an embodiment of the present invention, the present invention further comprises a piston 10 for changing the effective diameter of the air bag 1, the piston 10 is sleeved on the outer wall of the first end cap 2 and abuts against the air bag 1, an interference fit is formed between the piston 10 and the first end cap 2, and the compressed gas in the air bag 1 provides a supporting force for the piston 10, so as to prevent the piston 10 from falling off from the first end cap 2; in the working process of the air spring, the rigidity of the air spring can change along with the external situation, which is shown in that the volume of a sealed chamber of the air spring changes and the effective diameter of the air bag 1 changes, the effective diameter of the air bag 1 is related to the section shape of the outer wall of the piston 10, the air bag 1 is attached to the outer wall of the piston 10 to be folded when the air spring works, and the effective diameter of the air bag 1 is the diameter of the midpoint of the folding part of the attached piston 10.

In an embodiment of the present invention, the inner walls of the first end cap 2 and the piston 10 are both provided with a reinforcing rib for improving strength, so as to prevent the first end cap 2 or the piston 10 from being damaged during the operation.

In an embodiment of the present invention, the airbag further comprises a cushion ring 11 for preventing the airbag 1 and the outer wall of the second end cap buckling ring 7 from moving relatively; the backing ring 11 is sleeved on the periphery of the second end cover buckling ring 7 and is abutted against the platform structure of the second end cover 3, so that the air bag 1 is prevented from being damaged due to friction or extrusion with the second end cover buckling ring 7 caused by up-and-down movement in the working process; the surface contacted with the air bag 1 is a curved surface, so that the swinging force and the like borne by the air bag 1 can be relieved, and the air bag 1 can correspondingly move on the curved surface along with the stress direction.

In an embodiment of the present invention, the longitudinal section of the backing ring 11 is a right triangle with a curved hypotenuse, and the two sides formed by the right triangle are respectively abutted to the platform structures of the second end cap buckling ring 7 and the second end cap 3, so as to ensure that the position of the backing ring 11 is not changed during the operation.

In one embodiment of the present invention, the airbag device further includes a shield 12 for preventing external foreign materials from contacting the airbag 1, a shield gasket 13 for mounting the shield 12, and a shield hoop 14 for fixing the shield 12 and the shield gasket 13; one end of the protective cover 12 close to the first end cover 2 is clamped with the first end cover 2, the protective cover liner 13 is sleeved on an outward protruding part of the wavy structure 4-1, one end of the protective cover 12 far away from the first end cover 2 is fixed on the outer wall of the protective cover liner 13 through the protective cover hoop 14, a structure which sequentially comprises the protective cylinder 4, the protective cover liner 13, the protective cover 12 and the protective cover hoop 14 from inside to outside is formed, and the protective cover 12 is ensured to be stably connected with the protective cylinder 4; the protective cover 12 is used for preventing dust and water and protecting the air bag 1 from being damaged by collision of external sharp foreign matters.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

While embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limiting the present invention. Variations, modifications, substitutions and alterations of the above-described embodiments may occur to persons of ordinary skill in the art without departing from the scope of the invention.

The above detailed description of the present invention does not limit the scope of the present invention. Any other corresponding changes and modifications made according to the technical idea of the present invention should be included in the scope of the claims of the present invention.

Claims

1. An air spring with protective structure comprising: the air bag comprises an air bag, a first end cover and a second end cover, wherein two ends of the air bag are respectively buckled and pressed on the outer walls of the first end cover and the second end cover, and a sealed chamber is formed by the air bag, the first end cover and the second end cover; it is characterized by also comprising: the protective sleeve is used for protecting the air bag, and the protective sleeve buckling and pressing ring is used for fixing the air bag and the protective sleeve; protect a section of thick bamboo cover and establish the gasbag periphery, it follows to protect a section of thick bamboo clamping ring the gasbag is inside to be supported protect a section of thick bamboo, and right gasbag outside-in withholds, forms from interior to exterior in proper order and protect a section of thick bamboo clamping ring the gasbag with protect a structure of section of thick bamboo, withhold the back, it forms and is used for the restriction to protect a section of thick bamboo to detain the wavy structure of clamping ring.

2. The air spring of claim 1, further comprising a first end cap snap ring and a second end cap snap ring; the first end cover buckling ring is used for buckling and pressing the outer wall of the air bag to form a structure which sequentially comprises the first end cover, the air bag and the first end cover buckling ring from inside to outside, and the air bag is sealed; and the second end cover buckling ring is used for buckling and pressing the outer wall of the air bag to form a structure which is sequentially formed from inside to outside and used for the second end cover, the air bag and the second end cover buckling ring, and the air bag is sealed.

3. The air spring according to claim 1, further comprising a stopper rubber for preventing foreign substances from contacting the air bag unprotected by the tube, a stopper rubber collar for fixing the stopper rubber and the tube; the limiting rubber sleeve is arranged on the periphery of the air bag, which is not covered by the protective cylinder, one end of the limiting rubber close to the protective cylinder is fixed on the outer wall of the protective cylinder through the limiting rubber hoop, and one end of the limiting rubber far away from the protective cylinder is clamped with the second end cover.

4. The air spring of claim 3, wherein said casing is provided with a radial protrusion structure for preventing said stopper rubber collar from falling off; the radial protruding structure is located below the limiting rubber hoop, and the maximum diameter of the radial protruding structure is larger than the outer diameter of the limiting rubber hoop.

5. The air spring of claim 4, further comprising a piston for varying the effective diameter of said air bag, said piston fitting over the outer wall of said first end cap and abutting said air bag.

6. The air spring of claim 5, wherein said first end cap and said inner wall of said piston are each provided with ribs for strength.

7. The air spring of claim 2, further comprising a backing ring for preventing relative movement of said bladder and an outer wall of said second end cap retaining ring; the backing ring cover is established the periphery and the butt of second end cover clamping ring the second end cover, with the surface of gasbag contact is the curved surface.

8. The air spring of claim 7, wherein said backing ring has a longitudinal cross-section in the form of a right triangle with the hypotenuse of the curve.

9. The air spring of claim 1, further comprising a shield for preventing foreign objects from contacting said air bag, a shield liner for mounting said shield, a shield collar for securing said shield and said shield liner; the protection casing is close to the one end of first end cover with first end cover joint, the protection casing liner cover is established the outwards protruding part of wavy structure, the protection casing is kept away from the one end of first end cover is passed through the protection casing hoop is fixed the outer wall of protection casing liner forms from interior to exterior and does in proper order protect a section of thick bamboo the protection casing liner the protection casing with the structure of protection casing hoop.