CN214838059U - Suspension bush - Google Patents

Abstract

The application discloses suspension bush, suspension bush includes: an outer tube; the outer pipe is sleeved outside the vibration reduction main spring, and the vibration reduction main spring is provided with a mounting cavity which is a non-rotary body cavity; the inner core is arranged in the installation cavity, and the outer peripheral wall of the inner core and the inner peripheral wall of the installation cavity are designed in a shape following manner; the outer tube and the inner core are made of metal materials, and the vibration reduction main spring is made of rubber materials. According to the suspension bush of this application embodiment, adopt the structural style that outer tube, damping main spring and inner core were installed in proper order, do benefit to the vibration isolation that improves the suspension bush, fall the performance of making an uproar, and the structural design of damping main spring and inner core does benefit to and improves holistic product assembly nature of suspension, mistake proofing nature, anticreep nature and durability.

Description

Suspension bush

Technical Field

The application relates to the technical field of vehicle manufacturing, in particular to a suspension bushing.

Background

The suspension is a bidirectional vibration isolation element which is connected with and supports the power assembly and has restraining and protecting effects on the movement trend. The functions of the suspension system include: fixing and supporting the automobile power assembly; bearing reciprocating inertia force and moment generated by the rotation and translation mass of the engine/motor in the power assembly; bearing all dynamic forces acting on the power assembly in the driving process of the automobile; isolating frame or body vibrations due to powertrain excitation; and the transmission of the vibration of the vehicle body to the power assembly, which is caused by the unevenness of the road surface and the impact of the road surface on the wheels, is isolated. In the related art, the suspension bushing structure of the suspension system has a single function, the performance is poor, and there is room for improvement.

SUMMERY OF THE UTILITY MODEL

The present application is directed to solving at least one of the problems in the prior art. To this end, an object of the present application is to propose a suspension bushing that is structurally simple, stable in performance, easy to install, and has error-proofing, run-out-proofing and durability.

A suspension bushing according to an embodiment of the present application includes: an outer tube; the outer pipe is sleeved outside the vibration reduction main spring, and the vibration reduction main spring is provided with a mounting cavity which is a non-rotary body cavity; the inner core is arranged in the installation cavity, and the outer peripheral wall of the inner core and the inner peripheral wall of the installation cavity are designed in a shape following manner; the outer tube and the inner core are made of metal materials, and the vibration reduction main spring is made of rubber materials.

According to the suspension bush of this application embodiment, adopt the structural style that outer tube, damping main spring and inner core were installed in proper order, do benefit to the vibration isolation that improves the suspension bush, fall the performance of making an uproar, and the structural design of damping main spring and inner core does benefit to and improves holistic product assembly nature of suspension, mistake proofing nature, anticreep nature and durability.

According to some embodiments of the present application, the suspension bushing, the damping main spring includes: annular supporting part with be located fixed mounting portion in the annular supporting part, fixed mounting portion prescribes a limit to the installation cavity, outer pipe box is located outside the annular supporting part.

According to some embodiments of the suspension bush of the present application, the damping main spring further includes a plurality of connecting portions provided at intervals on an inner peripheral wall of the annular support portion, the connecting portions being used to connect the fixed mounting portion with the inner peripheral wall of the annular support portion.

According to some embodiments of the suspension bushing, the inner circumferential wall of the annular supporting portion is provided with first rubber protrusions protruding inwards in the radial direction, the number of the connecting portions is two, and the two connecting portions and the first rubber protrusions are distributed in the annular supporting portion in a Y shape.

According to some embodiments of the suspension bushing, the inner circumferential wall of the annular supporting portion is further provided with a second rubber protrusion protruding inwards in the radial direction, the second rubber protrusion is located between the two connecting portions, and the first rubber protrusion and the second rubber protrusion are arranged opposite to each other in the radial direction of the annular supporting portion.

According to the suspension bush of some embodiments of this application, the both ends of annular supporting portion are formed with along the outside convex spacing crash pad of radial, just the external diameter of spacing crash pad is greater than the external diameter of outer tube, the outer tube support press in two between the spacing crash pad.

According to the suspension bush of some embodiments of this application, spacing crash pad is equipped with along the sunken separating groove of axial, separating groove is in spacing crash pad's circumference is "pentagram" and distributes.

According to some embodiments of the suspension bushing of the present application, the inner core is integrally constructed in an "arrow" shaped configuration.

According to some embodiments of the suspension bushing of the present application, the inner core is configured as a symmetrical structure, and the inner core has a hollowed-out hole.

According to some embodiments of the suspension bushing of the present application, the outer tube is vulcanized as one piece with the damping main spring; wherein the inner peripheral wall of the outer tube has a step surface; and the outer peripheral wall of the outer tube has anti-falling teeth.

Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.

Drawings

The above and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a perspective view of a suspension bushing according to an embodiment of the present application;

FIG. 2 is a schematic structural view of a suspension bushing according to an embodiment of the present application;

FIG. 3 is a cross-sectional view taken at A-A in FIG. 2;

FIG. 4 is a schematic structural diagram of a damper main spring of a suspension bushing according to an embodiment of the present application;

FIG. 5 is a schematic illustration (another perspective) of the construction of a damper main spring of a suspension bushing according to an embodiment of the present application;

FIG. 6 is a schematic illustration (yet another perspective) of the structure of a damper main spring of a suspension bushing according to an embodiment of the present application;

FIG. 7 is a schematic structural view (yet another perspective) of a damper main spring of a suspension bushing according to an embodiment of the present application;

FIG. 8 is a schematic structural view of an inner core of a suspension liner according to an embodiment of the present application;

FIG. 9 is a schematic structural view (another perspective) of an inner core of a suspension liner according to an embodiment of the present application;

FIG. 10 is a schematic structural view of an outer tube of a suspension bushing according to an embodiment of the present application;

FIG. 11 is a schematic structural view (another perspective) of an outer tube of a suspension bushing according to an embodiment of the present application;

reference numerals:

the suspension bushing 100 is provided with a suspension bushing,

the inner core 1, the hollow holes 11,

the damping main spring 2, the annular supporting part 21, the fixed mounting part 22, the connecting part 23, the first rubber bulge 24, the second rubber bulge 25, the rubber flanging 26, the limiting anti-collision pad 27, the separation groove 28 and the mounting cavity 29,

outer tube 3, step face 31, anticreep tooth 32.

Detailed Description

Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application.

Unless otherwise specified, the front-rear direction in the present application is the longitudinal direction of the vehicle, i.e., the X direction; the left and right directions are the transverse direction of the vehicle, namely the Y direction; the up-down direction is the vertical direction of the vehicle, i.e., the Z direction.

The suspension bushing 100 according to the embodiment of the present application is described below with reference to fig. 1 to 11, and the suspension bushing 100 adopts an integrally vulcanized structural design, which can improve the functions of vibration isolation, spacing and noise reduction of the suspension bushing 100 itself, and is beneficial to improving the assembly performance, error prevention, anti-falling-off performance and durability of the product.

As shown in fig. 1 to 3, a suspension bushing 100 according to an embodiment of the present application includes: outer tube 3, damping main spring 2 and inner core 1.

As shown in fig. 1, the outer tube 3 is sleeved outside the damping main spring 2, wherein the outer tube 3 is axially in limited fit with the damping main spring 2, and the outer tube 3 and the damping main spring 2 can be vulcanized into an integral structure, so as to prevent the outer tube 3 and the damping main spring 2 from being separated from each other, and improve the stability of the suspension bushing 100.

As shown in fig. 4 and 5, damping main spring 2 has a mounting cavity 29, mounting cavity 29 is configured as a non-rotating body cavity, as shown in fig. 1, inner core 1 is installed in mounting cavity 29, and the outer peripheral wall of inner core 1 is conformal with the inner peripheral wall of mounting cavity 29, that is, when inner core 1 is installed in mounting cavity 29, the outer peripheral wall of inner core 1 and the inner peripheral wall of mounting cavity 29 can play a role of mutual circumferential limitation, so as to avoid the problem of relative rotation between inner core 1 and damping main spring 2.

Wherein, and all set up the periphery wall of inner core 1 and the internal perisporium of installation cavity 29 to non-solid of revolution structure, can play the problem of preventing the misloading when carrying out the assembly of inner core 1 and damping main spring 2, and inner core 1 also can vulcanize structure as an organic whole with damping main spring 2 to make the inseparable laminating of the periphery wall of installation cavity 29 and inner core 1, thereby prevent that inner core 1 from deviating from damping main spring 2, improve suspension bush 100's stability.

Outer tube 3 and inner core 1 are made of metal material, and damping main spring 2 is made of rubber material, that is to say, as shown in fig. 3, outer tube 3, damping main spring 2 and inner core 1 in this application are in turn sleeved along radial outside-in, and vulcanized into an integrated structure, thereby forming a brand-new bushing structure, and on the premise of satisfying the bearing function in the Z direction, the durability of the colloid in the Z direction is enhanced. Wherein, the outer tube 3 and the inner core 1 have greater structural strength, which is beneficial to ensuring the structural stability of the suspension bushing 100. And the damping main spring 2 can play the effect of buffering, damping between outer tube 3 and inner core 1 to make suspension bush 100 play the effect of buffering vibration, noise absorption between power assembly and frame, promote suspension bush 100's practicality and durability.

It should be noted that, by the installation form of the outer tube 3, the damping main spring 2 and the inner core 1 in the present application, the overall weight of the suspension bushing 100 is only about 500g, wherein, the outer tube 3 and the inner core 1 can be formed by extrusion of aluminum material, the product precision is easy to control, and the assembly precision of the assembly product can be indirectly improved.

According to suspension bush 100 of this application embodiment, adopt the structural style that outer tube 3, damping main spring 2 and inner core 1 installed in proper order, do benefit to the vibration isolation that improves suspension bush 100, fall the performance of making an uproar, and the structural design of damping main spring 2 and inner core 1 does benefit to and improves the holistic product assembly nature of suspension, mistake proofing nature, anticreep nature and durability.

In some embodiments, as shown in fig. 1 and 2, the damping main spring 2 includes an annular support portion 21 and a fixed mounting portion 22, the fixed mounting portion 22 is located inside the annular support portion 21, the fixed mounting portion 22 defines a mounting cavity 29, and the outer tube 3 is sleeved outside the annular support portion 21.

As shown in fig. 1, the annular support portion 21 is an annular structure that is circumferentially closed, the outer tube 3 is vulcanized to the outer circumferential wall of the annular support portion 21 to form an integral structure with the annular support portion 21, and the fixed mounting portion 22 is located in the annular support portion 21 and spaced from the inner circumferential wall of the annular support portion 21, so that after the inner core 1 is mounted in the mounting cavity 29, the inner core 1 is located in the central region of the annular support portion 21, and the inner core 1 and the outer tube 3 are spaced from each other by the annular support portion 21 and the fixed mounting portion 22 to prevent the inner core 1 from directly contacting the outer tube 3 to generate noise, thereby facilitating to prevent the outer tube 3 from contacting the inner core 1 to generate serious noise when the structural strength of the suspension bushing 100 is increased by the outer tube 3 and the inner core 1.

Note that, as shown in fig. 6, the axial dimension of the annular support portion 21 and the axial dimension of the fixed mounting portion 22 are configured to be the same, so that the annular support portion 21 is wrapped around the outer periphery of the fixed mounting portion 22, so that the outer tube 3 can be spaced apart by the annular support portion 21 and the fixed mounting portion 22 at each position in the axial direction and the circumferential direction.

And the annular supporting part 21 and the fixed mounting part 22 are spaced apart in the radial direction, so that a lightening cavity is formed between the annular supporting part 21 and the fixed mounting part 22, thereby being beneficial to reducing the overall weight of the damping main spring 2, and realizing the light-weight design and the cost reduction of the suspension bush 100.

In some embodiments, the damping main spring 2 further includes a plurality of connecting portions 23, the plurality of connecting portions 23 being spaced apart from each other on the inner circumferential wall of the annular support portion 21, the connecting portions 23 being used to connect the fixed mounting portion 22 to the inner circumferential wall of the annular support portion 21.

That is to say, the connecting portion 23 is radially extended in the annular supporting portion 21, and the radially inner end of the connecting portion 23 is fixedly connected to the outer peripheral wall of the fixed mounting portion 22, and the radially outer end of the connecting portion 23 is fixedly connected to the inner peripheral wall of the annular supporting portion 21, so that the relative positions of the annular supporting portion 21 and the fixed mounting portion 22 are fixed, wherein the annular supporting portion 21, the connecting portion 23 and the fixed mounting portion 22 can be integrally formed, so as to simplify the mounting steps, facilitate the manufacturing, and facilitate the improvement of the assembly efficiency.

In a specific design, as shown in fig. 4, the connecting portion 23 may extend obliquely in the radial direction in the annular supporting portion 21, and the center position of the mounting cavity 29 coincides with the center of the annular supporting portion 21, so that the overall structure of the damping main spring 2 is more regular.

In some embodiments, the inner circumferential wall of the annular supporting portion 21 is provided with two first rubber protrusions 24 protruding inward in the radial direction, and the two connecting portions 23 and the first rubber protrusions 24 are distributed in the annular supporting portion 21 in a "Y" shape.

As shown in fig. 4, two connection portions 23 are located in an upper (in the direction shown in the figure) portion region in the annular support portion 21, that is, the connection portions 23 are used for fixedly connecting an upper portion wall surface of the inner peripheral wall of the annular support portion 21 and an upper portion wall surface of the outer peripheral wall of the fixed mounting portion 22, the two connection portions 23 are symmetrically arranged, the first rubber protrusion 24 is arranged on a lower wall surface of the inner peripheral wall of the annular support portion 21, and the first rubber protrusion 24 is arranged to protrude upward, so that the two connection portions 23 and the first rubber protrusion 24 are distributed in a "Y" shape, thereby forming a symmetrical structure in the annular support portion 21.

In some embodiments, the inner circumferential wall of the annular support portion 21 is further provided with a second rubber protrusion 25 protruding inward in the radial direction, the second rubber protrusion 25 is located between the two connecting portions 23, and the first rubber protrusion 24 and the second rubber protrusion 25 are arranged opposite to each other in the radial direction of the annular support portion 21.

As shown in fig. 4, the second rubber protrusion 25 is disposed on the upper wall surface of the inner circumferential wall of the annular support portion 21, and the second rubber protrusion 25 is disposed in a downward protruding manner, that is, the first rubber protrusion 24 and the second rubber protrusion 25 are disposed opposite to each other in the radial direction of the annular support portion 21, so that the arrangement of the first rubber protrusion 24 and the second rubber protrusion 25 is beneficial to increasing the structural strength of the annular support portion 21.

Wherein, the internal perisporium of annular support portion 21 still is equipped with rubber turn-ups 26, as shown in fig. 4, rubber turn-ups 26 are two, and two rubber turn-ups 26 symmetric distribution are in the left and right sides wall department of the internal perisporium of annular support portion 21 to make first rubber bulge 24, second rubber bulge 25 and two rubber turn-ups 26 at the crisscross setting of the internal perisporium of annular support portion 21. It should be noted that the first rubber protrusion 24 and the second rubber protrusion 25 are configured as a gradual reinforcing structure in the up-down direction of the annular supporting portion 21, and the two rubber flanges 26 are configured as a gentle reinforcing structure in the left-right direction of the annular supporting portion 21, so that the bearing performance of the annular supporting portion 21 in the Y/Z direction rubber body is improved, and the bearing performance of the suspension bushing 100 of the entire vehicle is improved.

It should be noted that, the rigidity of the nonlinear section of the bushing can be changed by adjusting the gradual-change reinforcing structure and the gentle reinforcing structure, so as to realize good vibration isolation performance.

In some embodiments, the two ends of the annular supporting portion 21 are formed with limiting pads 27 protruding outward in the radial direction, and the outer diameter of the limiting pads 27 is larger than that of the outer tube 3, and the outer tube 3 is pressed between the two limiting pads 27.

As shown in fig. 6, the two limit crash pads 27 are respectively located at the left end and the right end of the annular support portion 21, so that the two limit crash pads 27 define an installation space of the outer tube 3 at the outer peripheral wall of the annular support portion 21, as shown in fig. 3, the outer tube 3 is installed between the two limit crash pads 27, and the two ends of the outer tube 3 respectively abut against the two limit crash pads 27, it should be noted that the axial dimension of the outer tube 3 may be set to be slightly larger than the distance between the two limit crash pads 27, so that the end of the outer tube 3 is pressed against the limit crash pads 27.

From this, through setting up two spacing crash pads 27, can play the effect of axial constraint to outer tube 3 to make outer tube 3 keep at the periphery wall of damping main spring 2 steadily, it need not set up limit structure alone, does benefit to and simplifies the number of the production sub-assembly, does benefit to the integrated level that improves suspension bush 100, and through foretell structural design, does benefit to the input that reduces manufacturing cost, promotes production efficiency, saves manufacturing cost.

In some embodiments, the limiting crash pads 27 are provided with separation grooves 28 that are recessed in the axial direction, and the separation grooves 28 are distributed in a "five-pointed star" manner in the circumferential direction of the limiting crash pads 27, that is, each of the limiting crash pads 27 is provided with five separation grooves 28, and the separation grooves 28 are spaced apart and distributed in a "five-pointed star" manner in the circumferential direction of the limiting crash pads 27. As shown in fig. 6 and 7, the two position-limiting crash pads 27 are each provided with a separation groove 28, wherein, as shown in fig. 6, the left end of the separation groove 28 of the position-limiting crash pad 27 located at the left end of the annular support seat is open, and the right end of the separation groove 28 is closed; and the two ends of the separation groove 28 of the limit crash pad 27 positioned at the right end of the annular supporting seat are penetrated, namely the separation groove 28 penetrates through the limit crash pad 27 positioned at the separation groove.

Therefore, the arrangement of the plurality of separation grooves 28 is beneficial to reducing the colloid contact area between the damping main spring 2 and a mating piece, preventing large-area contact friction abnormal sound and improving the noise reduction performance of the suspension bushing 100.

In some embodiments, the inner core 1 is integrally configured to be in an arrow-head-shaped structure, that is, the outlines of the outer peripheral wall of the inner core 1 and the inner peripheral wall of the installation cavity 29 are both configured to be in an arrow-head shape, so that the inner core 1 is configured to be in an irregular structural design, which is beneficial to increase the vulcanization area between the main damping spring 2 and the inner core 1, and is beneficial to enhancing the bearing capacity and the colloid durability of the product, and by adopting the structural form, the assembly direction error prevention of the whole vehicle wire body of the assembly product is facilitated.

In some embodiments, the inner core 1 is configured as a symmetrical structure, and the inner core 1 has the hollow holes 11, as shown in fig. 8 and 9, the inner core 1 is provided with five hollow holes 11, wherein one hollow hole 11 is a circular hole and is located at a middle position of the inner core 1, and the remaining four hollow holes 11 are distributed around the circular hole, and thus, the inner core 1 adopts a topology optimization structure, which can eliminate a redundant structure, reduce weight, and save cost on the premise of satisfying strength.

In some embodiments, the outer tube 3 and the damping main spring 2 are vulcanized into a whole, wherein, as shown in fig. 10, the inner peripheral wall of the outer tube 3 has a step surface 31, i.e. the inner peripheral wall of the outer tube 3 is a variable diameter wall surface, thereby being beneficial to increasing the joint area of the outer tube 3 and the damping main spring 2 during vulcanization and preventing the problems of degumming, cracking and peeling after durability.

As shown in fig. 10 and 11, the outer peripheral wall of the outer tube 3 has anti-disengaging teeth 32, and the anti-disengaging teeth 32 on the outer peripheral wall of the outer tube 3 are assembled with the sub-frame integrated mounting sleeve by press-fitting interference fit, so that the problems of press-fitting deformation, disengagement and the like are prevented. The outline shape of the anti-falling teeth 32 can be adjusted according to the force requirement of the whole vehicle, so that the anti-falling teeth 32 can meet the anti-falling requirement.

Thus, the above-described suspension bushing 100 in the present application has the following advantages: 1. the product structure has the advantages of light weight, high integration level and low cost; 2. the advantages of high production efficiency, convenient manufacture and convenient assembly process exist in the production field; 3. the product has the advantages of high strength, low quality and the like in material; 4. the product has the advantages of high strength, no abnormal sound and the like.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present application.

In the description of the present application, "the first feature" and "the second feature" may include one or more of the features.

In the description of the present application, "a plurality" means two or more.

In the description of the present application, the first feature being "on" or "under" the second feature may include the first and second features being in direct contact, and may also include the first and second features being in contact not directly but via another feature therebetween.

In the description of the present application, the first feature being "on," "above" and "over" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is at a higher level than the second feature.

In the description herein, reference to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like means 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 application. In this specification, the schematic representations of the terms used above do not necessarily 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.

While embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the application, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. A suspension liner (100), comprising:

an outer tube (3);

the damping main spring (2), the outer tube (3) is sleeved outside the damping main spring (2), the damping main spring (2) is provided with a mounting cavity (29), and the mounting cavity (29) is a non-rotary body cavity;

the inner core (1) is installed in the installation cavity (29), and the outer peripheral wall of the inner core (1) and the inner peripheral wall of the installation cavity (29) are designed in a shape following mode; wherein the content of the first and second substances,

the outer tube (3) and the inner core (1) are both made of metal materials, and the vibration reduction main spring (2) is made of rubber materials.

2. The suspension bushing (100) of claim 1, wherein the damping main spring (2) comprises: annular supporting portion (21) and being located fixed mounting portion (22) in annular supporting portion (21), fixed mounting portion (22) are injectd installation cavity (29), outer tube (3) cover is located outside annular supporting portion (21).

3. The suspension bushing (100) according to claim 2, wherein the damping main spring (2) further comprises a plurality of connecting portions (23), the plurality of connecting portions (23) being spaced apart at an inner circumferential wall of the annular support portion (21), the connecting portions (23) being used to connect the fixed mounting portion (22) with the inner circumferential wall of the annular support portion (21).

4. The suspension bushing (100) of claim 3, wherein the annular support portion (21) has two radially inwardly protruding first rubber protrusions (24) on an inner circumferential wall thereof, and the two connecting portions (23) and the first rubber protrusions (24) are distributed in the annular support portion (21) in a "Y" shape.

5. The suspension bushing (100) of claim 4, wherein the inner peripheral wall of the annular support portion (21) is further provided with a second rubber protrusion (25) protruding radially inward, the second rubber protrusion (25) is located between the two connecting portions (23), and the first rubber protrusion (24) and the second rubber protrusion (25) are arranged diametrically opposite to each other in the radial direction of the annular support portion (21).

6. The suspension bushing (100) according to claim 2, wherein the two ends of the annular support portion (21) are formed with limiting crash pads (27) protruding radially outward, and the outer diameter of the limiting crash pads (27) is larger than the outer diameter of the outer tube (3), and the outer tube (3) is pressed between the two limiting crash pads (27).

7. The suspension bushing (100) according to claim 6, wherein the spacing crash pad (27) is provided with axially recessed separation grooves (28), the separation grooves (28) being distributed in a "five-pointed star" distribution in the circumferential direction of the spacing crash pad (27).

8. The suspension liner (100) of claim 1, wherein the inner core (1) is integrally constructed in an "arrow" configuration.

9. The suspension liner (100) according to claim 1, wherein the inner core (1) is configured as a symmetrical structure and the inner core (1) has hollowed out holes (11).

10. The suspension liner (100) according to claim 1, wherein the outer tube (3) is vulcanized in one piece with the damping main spring (2); wherein

The inner peripheral wall of the outer pipe (3) is provided with a step surface (31);

and the outer peripheral wall of the outer tube (3) has anti-falling teeth (32).

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