CN214091483U

CN214091483U - Buffer device

Info

Publication number: CN214091483U
Application number: CN202022546645.9U
Authority: CN
Inventors: 黄勇
Original assignee: ARaymond Automotive Fasteners Zhenjiang Co ltd; A Raymond SARL
Current assignee: ARaymond Automotive Fasteners Zhenjiang Co ltd; A Raymond SARL
Priority date: 2020-11-06
Filing date: 2020-11-06
Publication date: 2021-08-31
Anticipated expiration: 2030-11-06

Abstract

The utility model provides a buffer device, it includes: a base defining a receiving cavity in a longitudinal direction, the receiving cavity having a first engagement portion; a cushion pin having a pin body adapted to be inserted into the receiving cavity, the pin body having a second engagement portion; and a locking bush fixed to the base; the pin body can rotate between a primary adjustment position and a locking position relative to the accommodating cavity in the accommodating cavity; in the initial adjustment position, the first engagement portion is disengaged from the second engagement portion to allow movement of the pin body in the longitudinal direction; when the pin body is rotated from the initial position to the locking position, the first engagement portion engages with the second engagement portion and drives the pin body to move away from the base in the longitudinal direction; in the locking position, the pin body is locked by the locking bush; the locking bush comprises a first locking portion positionable in at least two circumferential orientations relative to the housing cavity to lock the pin body in at least two locking positions. The buffer device allows the buffer distance to be adjusted according to the actual application requirement.

Description

Buffer device

Technical Field

The utility model relates to a buffer technical field specifically relates to buffer with adjustable.

Background

In general, when door members such as a trunk door, a hood, and a door of a vehicle are closed, a slight gap is formed between the door members and a vehicle body, so that: during the driving of the vehicle, the door part may collide with the vehicle body repeatedly due to vibration and jolt to generate noise, which affects the user experience. In order to avoid noise due to these clearances, a bumper is generally mounted on the vehicle body.

Typically, the damper has an abutment surface adapted to provide damping against the door member. In the installation process of the damper, generally, the abutting surface of the damper is firstly pushed by normally closing the door part so that the abutting surface of the damper is at the reference position, and then the abutting surface is further lifted by a certain damping interval so that the abutting surface of the damper can be tightly abutted to the abutting surface of the damper when the door part is normally closed to provide a good damping effect. However, existing bumpers are typically designed to provide a fixed bumper spacing. In fact, for different vehicle models and different use positions of the buffer, different buffer distances are often required to be provided to achieve a better buffer effect, so that multiple sets of dies are required to produce buffers with different specifications, and the production and manufacturing cost and the use cost are obviously increased.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a solve the problem that exists among the above-mentioned prior art, provide a modified adjustable buffer.

Therefore, the utility model provides a buffer, buffer includes: a base including an accommodation chamber in a longitudinal direction, an inner circumferential surface of the accommodation chamber being provided with a first engagement portion; a cushion pin having a pin body adapted to be inserted into the accommodation chamber in the longitudinal direction, an outer peripheral surface of the pin body being provided with a second engagement portion that matches the first engagement portion; and a locking bush disposed at least partially within the accommodation cavity in the longitudinal direction and fixed to each other with the base; wherein the pin body is rotatable within the housing cavity relative to the housing cavity between a home position and a locked position; in the initial adjustment position, the first engagement portion is not engaged with the second engagement portion to allow movement of the pin body in the longitudinal direction; upon rotation of the pin body from the initial adjustment position to the locking position, the first and second engagement portions engage each other and drive the pin body in the longitudinal direction away from the receiving cavity; in the locking position, the pin body is locked by the locking bush to hinder the pin body from rotating relative to the accommodation cavity; wherein the locking bush comprises a first locking portion for locking the pin body, the first locking portion being positionable in at least two circumferential orientations relative to the receiving cavity to allow locking of the pin body in at least two locking positions.

Through making the first locking portion of locking bush changeable for the circumferential direction of holding chamber, allow after carrying out initial adjustment to the longitudinal position of cushion round pin with the rotatory different angles of cushion round pin in order to reach the latched position and make the round pin main part remove and deviate from the holding chamber (deviating from the base) different distance simultaneously to obtain different buffering interval in order to satisfy different application demands.

In accordance with the above-described concepts, the present invention may further include any one or more of the following alternatives.

In some alternatives, a distance that the pin body moves in the longitudinal direction when the pin body is rotated from the initial-adjustment position to the locking position is positively correlated with a rotation angle of the pin body.

In some alternatives, the first engagement portion and the second engagement portion are each in the form of threads, the first engagement portion extending along a partial perimeter of the inner peripheral surface of the receiving cavity, and the second engagement portion extending along a partial perimeter of the outer peripheral surface of the pin body.

In some alternatives, the locking bush is provided with a positioning projection projecting outwardly in a lateral direction; at least two positioning grooves matched with the positioning convex parts are arranged on the circumferential wall of the accommodating cavity at intervals along the circumferential direction; the locating projection is adapted to engage with the locating groove to locate the locking bush in at least two circumferential orientations relative to the receiving cavity. By positioning the locking bush in at least two circumferential orientations relative to the receiving cavity, it is achieved that the first locking portion is positioned in at least two circumferential directions relative to the receiving cavity.

In some alternatives, the locking bush is provided with a resilient positioning cantilever extending in the longitudinal direction, the positioning cantilever being provided with the positioning boss thereon; the at least two positioning grooves of the accommodating cavity penetrate through the circumferential wall of the accommodating cavity; the positioning projection is adapted to engage with the positioning groove to prevent the locking bush from rotating relative to the accommodation chamber and moving in the longitudinal direction. This configuration achieves both the circumferential positioning of the locking bush with respect to the housing cavity and the fastening between the locking bush and the base.

In some alternatives, the locating projection of the locking bush is provided on an outer peripheral surface of the locking bush; the at least two positioning grooves of the accommodating chamber are arranged on the inner peripheral surface of the accommodating chamber and extend from one end of the accommodating chamber in the longitudinal direction; the locating projection is adapted to engage with the locating groove to prevent rotation of the locking bush relative to the receiving cavity. This configuration achieves circumferential positioning of the locking bush relative to the housing cavity.

In some alternatives, the damping device further comprises a fixing bush elastically sleeved outside the locking bush and fixing the locking bush to the accommodating cavity.

In some alternatives, the securing bush is provided with barbs projecting outwards in a transverse direction for securing the locking bush to the accommodation chamber.

In some alternatives, the damper pin includes a resilient locking cantilever arm extending in the longitudinal direction, the locking cantilever arm being connected to the pin body and being provided with a second locking portion matching the first locking portion of the locking bushing, the first locking portion of the locking bushing being adapted to engage with the second locking portion on the locking cantilever arm to lock the pin body in the locked position.

In some alternatives, the first locking portion is in the form of a slot provided on a circumferential wall of the locking bush and extending in the longitudinal direction; the second locking portion is in the form of a tab. By providing a first locking portion extending in the longitudinal direction, it is possible to allow the pin body to be further rotated to a locking position in which the second locking portion of the pin body engages with the first locking portion of the locking bush, even in a different longitudinal position upon initial commissioning.

In some alternatives, the locking cantilever of the cushion pin is aligned with the second engagement portion in the longitudinal direction. The arrangement is such that when the pin body is in the initial setting position, the locking cantilever does not mechanically interfere with the first engagement portion of the receiving cavity to allow the pin body to move in a longitudinal direction.

In some alternatives, the cushion pin includes a resilient retaining cantilever extending in the longitudinal direction, the retaining cantilever being connected to the pin body and provided with a retaining tooth matching the first engagement of the receiving cavity; the retaining tooth portion of the retaining cantilever is adapted to engage the first engagement portion of the receiving cavity to retain the pin body within the receiving cavity when the pin body is in the initial-set position.

In some alternatives, the receiving cavity has two first engaging portions arranged on opposite sides in the transverse direction, and the pin body has two second engaging portions arranged on opposite sides in the transverse direction, respectively, wherein the retaining cantilever is located between the two second engaging portions in the circumferential direction.

In some alternatives, the cushion pin further has a cushion head for providing cushioning, the cushion head being connected to the pin body.

According to the utility model discloses a buffer allows to adjust the buffer interval according to the application demand of reality, can satisfy the user demand of the different positions of different motorcycle types and vehicle, compares in buffer with the buffer that the buffer interval is not adjustable, need not to set up the buffer of many sets of moulds in order to produce different specifications, greatly reduced manufacturing cost and use cost.

Drawings

Other features and advantages of the present invention will be better understood from the following detailed description of alternative embodiments, taken in conjunction with the accompanying drawings, in which like reference characters designate the same or similar parts, and in which:

fig. 1 is a perspective view of a cushioning device according to an exemplary embodiment of the present invention;

FIG. 2 is a cross-sectional view of the cushioning device of FIG. 1;

FIG. 3A is a perspective view of a cushion pin of the cushion apparatus of FIG. 1;

FIG. 3B is a front view of the cushion pin of FIG. 3A;

FIG. 3C is a side view of the cushion pin of FIG. 3A;

FIG. 3D is a bottom view of the cushion pin of FIG. 3A;

FIG. 4A is a perspective view of a base of the cushioning device of FIG. 1;

FIG. 4B is a top view of the base of FIG. 4A;

FIG. 4C is a bottom view of the base of FIG. 4A;

FIG. 4D is a cross-sectional view taken along line A-A in FIG. 4C;

FIG. 5A is a perspective view of a locking bushing and a stationary bushing of the draft gear of FIG. 1;

FIG. 5B is a perspective view of the locking bushing of FIG. 5A;

FIG. 5C is a perspective view of the stationary bushing of FIG. 5A;

fig. 6A and 6B are perspective views of a base of a cushioning device according to another exemplary embodiment of the present invention, respectively, from different angles; and

fig. 7A and 7B are perspective views of a lock bush of a shock absorber according to another exemplary embodiment of the present invention, respectively, from different angles.

Detailed Description

The making and using of the embodiments are discussed in detail below. It should be understood, however, that the detailed description and specific examples, while indicating the particular manner of making and using the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention. The description herein of the structural positions of the respective components, such as the directions of upper, lower, top, bottom, etc., is not absolute, but relative. When the respective components are arranged as shown in the drawings, these direction expressions are appropriate, but when the positions of the respective components in the drawings are changed, these direction expressions are changed accordingly.

In the present invention, the longitudinal direction of the component means the direction along the length of the component, the transverse direction of the component means the direction perpendicular to the longitudinal direction of the component, and the circumferential direction of the component means the direction along the circumference of the component. The longitudinal direction of a cylindrical or annular component refers to the direction along the length of the component, the radial direction of the component refers to the direction along the diameter of the component, and the circumferential direction of the component refers to the direction along the circumference of the component.

Fig. 1 to 5C show a cushioning device 100 and its constituent components according to an embodiment of the present invention. The cushioning device 100 may be used, for example, to provide cushioning between a door component (including but not limited to a trunk door, a door, and a hood) of a vehicle and a vehicle body.

Referring to fig. 1 and 2, the buffer device 100 mainly includes: a seat 102, a cushion pin 104, and a locking bushing 106. The seat 102 includes a longitudinal direction D_LThe inner circumferential surface of the receiving chamber 108 is provided with a first engaging portion 110. The damping pin 104 has a damping head 112 and a pin body 114 connected to each other, the pin body 114 being adapted to be oriented in a longitudinal direction D_LInserted into the receiving cavity 108, the outer circumferential surface of the pin body 114 is provided with a second engaging portion 116 that mates with the first engaging portion 110. The locking bush 106 is in the longitudinal direction D_LIs at least partially disposed within the receiving cavity 108 and is secured to the base 102. Wherein the pin body 114 is rotatable within the receiving cavity 108 relative to the receiving cavity 108 between a home position and a locked position; in the initial adjustment position, the first and

second engagement portions

110, 116 are not engaged to allow the pin body 114 to move in the longitudinal direction D_LMoving; when the pin body 114 is rotated to the lock position from the initial adjustment position, the first contactThe engaging portion 110 and the second engaging portion 116 engage each other and drive the pin body 114 in the longitudinal direction D_LMoving away from the receiving cavity 108; in the locked position, the pin body 114 is locked by the locking bushing 106 to hinder rotation of the pin body 114 relative to the receiving cavity 108; wherein the locking bushing 106 comprises a first locking portion 118 for locking the pin body 114, the first locking portion 118 being positionable in at least two circumferential orientations relative to the receiving cavity 108 to allow locking the pin body 114 in at least two locking positions.

Specifically, referring to fig. 1 and 4A-4D, in the illustrated embodiment, the seat 102 may include a generally cylindrical receiving cavity 108 and an annular shoulder 120. The receiving cavity 108 has a first end 122 and a second end 124 in the longitudinal direction. The annular shoulder 120 may project outwardly in a transverse direction (radial direction in the illustrated embodiment) from an outer peripheral surface of the receiving cavity 108. The base 102 may be secured to the vehicle body by means of an annular shoulder 120.

As schematically shown, the receiving cavity 108 may have two first junctions 110, the two first junctions 110 being arranged at opposite sides of the receiving cavity 108 in the radial direction at a first end 122. As schematically shown, the first engaging portion 110 may be in the form of a screw thread and extend along a partial circumference of the inner circumferential surface of the receiving cavity 108. Alternatively, each first engaging portion 110 extends along a quarter of the circumference of the inner peripheral surface of the accommodating chamber 108, in other words, each first engaging portion 110 has a central angle of 90 degrees from a cross-sectional view.

Referring to fig. 3A through 3D, in the illustrated embodiment, the cushion head 112 of the cushion pin 104 may have a plate-like shape, such as an oblong plate-like shape. The cushioning head 112 is adapted to abut, for example, a door member of a vehicle to provide cushioning for the door member. The cushioning head 112 may incorporate a cushioning cap (not shown) made of a resilient material (e.g., TPE material) to provide a better cushioning effect.

The pin body 114 of the cushion pin 104 may have a proximal end 126 relatively close to the cushion head 112 and a distal end 128 relatively far from the cushion head 112 (see fig. 3C). The pin body 114 may have a generally oblong cross-section, with the pin body 114 including two arcuate sections 130 and two flat sections 132 on opposite sides of the transverse direction (see fig. 3A and 3D).

As schematically shown, at the proximal end 126 of the pin body 114, two arcuate segments 130 are each provided with one second engagement portion 116. The second engagement portion 116 may be in the form of a thread and extend in the circumferential direction of the arc-shaped section 130. Alternatively, each second engagement portion 116 has a central angle of 90 degrees from a cross-sectional perspective.

In the illustrated embodiment, one along the longitudinal direction D is disposed at each flat section 132_LAn extended resilient retention cantilever 134. One end of the holding cantilever 134 is connected to the flat section 132, and the other end (free end) of the holding cantilever 134 is provided with a holding tooth 136 that mates with the first engagement portion 110 of the receiving cavity 108. The retaining tooth 136 may, for example, have an inclined configuration that matches the first engagement portion 110 in the form of a thread, such that: in one aspect, the retaining tooth 136 may engage the threads of the first engagement portion 110 of the receiving cavity 108 when the pin body 114 is in the initial adjustment position to retain the pin body 114 in the receiving cavity 108; on the other hand, the retaining tooth 136 may slide away from the first engagement portion 110 along the threads of the first engagement portion 110 as the pin body 114 rotates when the pin body 114 rotates from the initial adjustment position toward the locked position, so as not to interfere with the rotation of the pin body 114 and the engagement of the first engagement portion 110 with the second engagement portion 116. Each retaining cantilever 134 is located between two second engagement portions 116 in the circumferential direction.

With combined reference to fig. 1 (in which the pin body 114 is in the initial-adjustment position), the flat section 132 of the pin body 114 faces the first engagement portion 110 of the receiving cavity 108, the arc-shaped section 130 of the pin body 114 (specifically, the second engagement portion 116 of the pin body 114) and the first engagement portion 110 of the receiving cavity 108 are offset from each other, and the cushion pin 104 may be urged in the longitudinal direction D by an external force_LMoves and, when the external force is removed, the pin body 114 can be retained within the receiving cavity 108 by the engagement of the retaining teeth 136 on the retaining cantilever 134 with the first engagement feature 110 of the receiving cavity 108.

In the initial adjustment position of the pin body 114, the buffer pin 104 (specifically, the buffer head 112 of the buffer pin 104) may be pushed, for example, by closing the door member, so that the buffer pin 104 moves to a reference position (i.e., a position where there is just no gap between the door member and the buffer head 112) to achieve initial adjustment of the buffer pin 104.

Here, the initial adjustment position of the pin body 114 refers to a position where the first engagement portion 110 and the second engagement portion 116 are not engaged to allow initial adjustment of the longitudinal position of the pin body 114 by pushing the cushion pin 104. Thus, it can be understood that the aforementioned reference position belongs to a specific case of the initial-adjustment position.

When the pin main body 114 is rotated from the initial adjustment position (e.g., the aforementioned reference position) to the lock position, the first engagement portion 110 and the second engagement portion 116 are engaged with each other and drive the pin main body 114 in the longitudinal direction D_LMoves away from the receiving cavity 108 to allow the longitudinal position of the cushion pin 104 to be adjusted again to achieve the desired cushion spacing.

Although in the illustrated embodiment the first and

second engagement portions

110, 116 are each in the form of threads, it will be appreciated that the first and

second engagement portions

110, 116 may have other suitable forms. For example, the first engagement portion 110 of the receiving cavity 108 may be in the form of a helical channel and the second engagement portion 116 of the pin body 114 may be in the form of a lug that mates with the helical channel, the lug being movable along the helical channel such that relative longitudinal displacement of the receiving cavity 108 and the pin body 114 occurs while rotating relative to one another.

Referring to fig. 2, 5B, and 7A and 7B, the locking bushing 106 is generally cylindrical in shape and is disposed at the second end 124 of the receiving cavity 108. The first locking portion 118 of the locking bush 106 is in the form of a slot, the slot 118 being provided on a circumferential wall of the locking bush 106 and running in the longitudinal direction D_LAnd (4) extending.

Accordingly, with combined reference to fig. 3A-3D, the cushion pin 104 is provided with a second locking portion 138 that mates with the first locking portion 118 of the locking bushing 106. Specifically, in the illustrated embodiment, at the distal end 128 of the pin body 114, in the longitudinal direction D is disposed_LAn extended resilient locking cantilever 140. Optionally, the locking cantilever 140 is located in the arcuate region of the pin body 114At the segment 130, and in the longitudinal direction D with the second joint 116_LAnd (4) upper alignment. One end of the locking cantilever 140 is connected to the pin main body 114, and the other end (free end) is provided with a second locking portion 138 in the form of a projection. The slots 118 of the locking bushing 106 are adapted to engage the tabs 138 on the locking cantilever 140 to lock the pin body 114 in the locked position.

Optionally, the locking bushing 106 includes two slots 118 symmetrically disposed in a transverse direction (radial direction in the illustrated embodiment), and the cushion pin 104 correspondingly includes two locking cantilevers 140 having tabs 138.

With continued reference to fig. 2, in the initial adjustment position (specifically, the aforementioned reference position), the tab 138 on the locking cantilever 140 abuts the inner peripheral surface of the locking bushing 106, at which point the pin body 114 may be rotated from the initial adjustment position until the tab 138 on the locking cantilever 140 engages the slot 118 of the locking bushing 106, thereby locking the pin body 114 in the locked position to block further rotation of the cushion pin 104 relative to the receiving cavity 108.

As previously described, as the pin body 114 rotates from the initial adjustment position to the locked position, the first and

second engagement portions

110, 116 engage each other and drive the pin body 114 in the longitudinal direction D_LMoving away from the receiving cavity 108. The distance that the pin body 114 moves is positively correlated to the angle of rotation of the pin body 114.

For example, for embodiments in which the first and

second engagement portions

110, 116 are both in the form of threads and each have a 90 degree central angle, once the pin body 114 leaves the initial adjustment position, the first and

second engagement portions

110, 116 begin to engage each other and drive the pin body 114 away from the receiving cavity 108, the distance the pin body 114 is moved will be proportional to the angle of rotation of the pin body 114 (the proportionality factor being dependent on the pitch of the threads).

In this manner, the distance of movement of the pin body 114 when readjusted can be changed by changing the angle that the pin body 114 needs to be rotated from the initial adjustment position to the locked position, so that a desired cushioning distance is obtained, as will be described in detail below.

Referring to fig. 4C to 5C and 6A to 7B, the locking bush 106 is provided with positioning projections 142a, 142B projecting outward in the radial direction. At least two

positioning grooves

144a, 144b matching with the

positioning protrusions

142a, 142b are provided on the circumferential wall of the accommodation chamber 108 at intervals in the circumferential direction. Wherein the locating

projections

142a, 142b are adapted to engage with the locating

recesses

144a, 144b to locate the locking bushing 106 in at least two circumferential orientations relative to the receiving cavity 108.

As exemplarily shown, the locking bush 106 may include a pair of

positioning protrusions

142a, 142b symmetrically disposed in the radial direction, and at least two pairs of

positioning grooves

144a, 144b matching with the

positioning protrusions

142a, 142b are respectively provided on the circumferential wall of the receiving cavity 108 at intervals in the circumferential direction.

In the embodiment shown in fig. 4C to 5C, the positioning projection 142a of the locking bush 106 is provided on the outer circumferential surface of the locking bush 106. The positioning groove 144a of the accommodation chamber 108 is provided on the inner peripheral surface of the accommodation chamber 108 and extends in the longitudinal direction D from the second end 124 of the accommodation chamber 108_LAnd (4) extending. The locating projection 142a is adapted to engage the locating recess 144a to prevent rotation of the locking bush 106 relative to the receiving cavity 108, thereby achieving circumferential positioning of the locking bush 106 relative to the receiving cavity 108.

In the illustrated embodiment, the cushioning apparatus 100 may further include a securing bushing 146, the securing bushing 146 resiliently sleeved over the exterior of the locking bushing 106 and securing the locking bushing 106 to the receiving cavity 108. In particular, the securing bush 146 may be provided with barbs 148 projecting outwards in a transverse direction (in the illustrated embodiment a radial direction) for securing the locking bush 106 to the receiving cavity 108. Alternatively, the fixing bushing 146 may be made of metal.

In the embodiment shown in fig. 6A-7B, the locking bush 106 is provided with a longitudinal direction D_LAnd an extended elastic positioning cantilever 150, wherein the positioning cantilever 150 is provided with a positioning convex part 142 b. The positioning groove 144b of the accommodation chamber 108 penetrates the circumferential wall of the accommodation chamber 108. The positioning projection 142b is adapted to engage with the positioning groove 144b to prevent the locking bush 106 from rotating relative to the receiving cavity 108 and along the longitudinal direction D_LMovement to effect circumferential positioning of the locking bush 106 relative to the receiving cavity 108 and locking of the bush 106 with the baseThe fastening between the sockets 102.

Upon assembly of the seat 102 and the locking bushing 106, the circumferential orientation of the first locking portion 118 relative to the receiving cavity 108 can be varied by engaging the locating

tabs

142a, 142b with the differently oriented locating

recesses

144a, 144b to achieve different cushioning pitches as described above. Referring to fig. 4A, the outer circumferential surface of the accommodating chamber 108 may further be provided with a plurality of indication portions 152, and each indication portion 152 corresponds to a position of one positioning groove or a pair of positioning grooves 144A in the radial direction, and further corresponds to one buffering space. In this way, after the required damper pitch is determined, the assembly of the seat 102 and the lock bush 106 is performed in accordance with the instruction of the instruction portion 152, and the required damper pitch can be obtained by rotating the damper pin 104 to bring the pin body 114 to the lock position after the initial adjustment of the damper pin 104.

The installation and use of the cushioning device 100 according to the present invention will now be described with reference to fig. 1 to 7B. First, the receiving cavity 108 of the base 102 and the locking bush 106 are positioned and fixed in the respective circumferential orientations according to the required cushion spacing, and then the base 102 is fixed to the vehicle body. Then, the pin body 114 is slightly inserted into the receiving cavity 108 with its flat section 132 facing the first engagement portion 110 of the receiving cavity 108, so that the pin body 114 can be held in the receiving cavity 108 by the holding cantilever 134, with the pin body 114 in the initial adjustment position, and then the door member can be closed, pushing the buffer pin 104 so that the buffer pin 104 is in a reference position with its buffer head 112 just abutting the door member. Finally, by opening the door component and rotating the damper pin 104 to rotate the pin body 114 from the initial adjustment position to the locked position, the first engagement portion 110 of the receiving cavity 108 engages the second engagement portion 116 of the pin body 114 to retain the pin body 114 within the receiving cavity 108, while the damper pin 104 is oriented in the longitudinal direction D_LThe required cushion spacing for movement away from the receiving cavity 108, i.e., the cushion spacing required for the cushion pin 104 to lift relative to the vehicle body, achieves the desired cushioning effect.

The above description has only been given of the application of the damping device by taking the use of the damping device in a vehicle as an example, and it can be understood that the damping device according to the present invention can be applied to various other scenes where damping is required.

It should be understood that the embodiments shown in fig. 1-7B are merely illustrative of the shape, size and arrangement of various optional components of cushioning devices according to the present invention, however, they are intended to be illustrative and not limiting, and that other shapes, sizes and arrangements may be employed without departing from the spirit and scope of the present invention.

The technical content and technical features of the present invention have been disclosed above, but it should be understood that various changes and modifications of the concept disclosed above can be made by those skilled in the art under the inventive concept of the present invention, and all fall within the scope of the present invention. The above description of embodiments is intended to be illustrative, and not restrictive, and the scope of the invention is defined by the appended claims.

Claims

1. A cushioning device, comprising:

a base including an accommodation chamber in a longitudinal direction, an inner circumferential surface of the accommodation chamber being provided with a first engagement portion;

a cushion pin having a pin body adapted to be inserted into the accommodation chamber in the longitudinal direction, an outer peripheral surface of the pin body being provided with a second engagement portion that matches the first engagement portion; and

a locking bush disposed at least partially within the accommodation cavity along the longitudinal direction and fixed to each other with the base;

wherein the pin body is rotatable within the housing cavity relative to the housing cavity between a home position and a locked position; in the initial adjustment position, the first engagement portion is not engaged with the second engagement portion to allow movement of the pin body in the longitudinal direction; upon rotation of the pin body from the initial adjustment position to the locking position, the first and second engagement portions engage each other and drive the pin body in the longitudinal direction away from the receiving cavity; in the locking position, the pin body is locked by the locking bush to hinder the pin body from rotating relative to the accommodation cavity;

wherein the locking bush comprises a first locking portion for locking the pin body, the first locking portion being positionable in at least two circumferential orientations relative to the receiving cavity to allow locking of the pin body in at least two locking positions.

2. The damper device according to claim 1, wherein a distance that the pin main body moves in the longitudinal direction when the pin main body rotates from the initial adjustment position to the lock position positively correlates with a rotation angle of the pin main body.

3. A fender according to claim 1 wherein the first engagement formation and the second engagement formation are each in the form of a screw thread, the first engagement formation extending along part of the circumference of the inner peripheral surface of the receiving cavity and the second engagement formation extending along part of the circumference of the outer peripheral surface of the pin body.

4. A damper device according to any one of claims 1 to 3, wherein the lock bush is provided with a positioning boss projecting outward in the lateral direction,

at least two positioning grooves matched with the positioning convex parts are arranged on the circumferential wall of the accommodating cavity at intervals along the circumferential direction;

the locating projection is adapted to engage with the locating groove to locate the locking bush in at least two circumferential orientations relative to the receiving cavity.

5. A damper arrangement according to claim 4, wherein the locking bush is provided with a resilient positioning cantilever extending in the longitudinal direction, the positioning cantilever being provided with the positioning projection thereon;

the at least two positioning grooves of the accommodating cavity penetrate through the circumferential wall of the accommodating cavity;

the positioning projection is adapted to engage with the positioning groove to prevent the locking bush from rotating relative to the accommodation chamber and moving in the longitudinal direction.

6. The cushion device according to claim 4, wherein the positioning protrusion of the lock bush is provided on an outer peripheral surface of the lock bush;

the at least two positioning grooves of the accommodating chamber are arranged on the inner peripheral surface of the accommodating chamber and extend from one end of the accommodating chamber in the longitudinal direction;

the locating projection is adapted to engage with the locating groove to prevent rotation of the locking bush relative to the receiving cavity.

7. The draft gear according to claim 6, further comprising a retainer bushing resiliently sleeved over an exterior of said lock bushing and securing said lock bushing to said receiving cavity.

8. An impact-attenuating device according to claim 7, characterised in that the fixing bushing is provided with barbs projecting outwards in the transverse direction for fixing the locking bushing to the receiving chamber.

9. A damper device according to any one of claims 1 to 3, characterized in that the damper pin comprises a resilient locking cantilever extending in the longitudinal direction, which locking cantilever is connected to the pin body and on which a second locking portion is provided which matches the first locking portion of the locking bushing,

the first locking portion of the locking bushing is adapted to engage the second locking portion on the locking cantilever arm with each other to lock the pin body in the locked position.

10. A damping device according to claim 9, characterised in that the first locking portion is in the form of a slot which is provided on a circumferential wall of the locking bush and extends in the longitudinal direction;

the second locking portion is in the form of a tab.

11. A fender according to claim 9 wherein the locking cantilever of the fender pin is aligned with the second engagement portion in the longitudinal direction.

12. A damper of claim 3 wherein said damper pin includes a resilient retaining arm extending in said longitudinal direction, said retaining arm being connected to said pin body and having a retaining tooth portion disposed thereon that mates with said first engagement portion of said receiving cavity;

the retaining tooth portion of the retaining cantilever is adapted to engage the first engagement portion of the receiving cavity to retain the pin body within the receiving cavity when the pin body is in the initial-set position.

13. An impact-attenuating device according to claim 12, characterised in that the receiving chamber has two first engaging portions arranged on opposite sides in the transverse direction,

the pin body has two second engagement portions arranged on opposite sides in the transverse direction,

wherein the holding cantilever is located between the two second engaging portions in the circumferential direction.

14. A damper of any one of claims 1 to 3 wherein the damper pin further has a damper head for providing damping, the damper head being connected to the pin body.