CN221033762U - Damping head and damping mechanism - Google Patents

Abstract

The utility model discloses a damping head and a damping mechanism, and belongs to the technical field of damping of vehicle-mounted shooting equipment and the like. The damping head comprises a connecting piece, a movable piece, a supporting piece and a damping structure, wherein the damping structure is respectively and movably connected with the connecting piece, one end of the movable piece is movably connected with the connecting piece, the other end of the movable piece is movably connected with the supporting piece, and one end, far away from the connecting piece, of the damping structure is movably connected with the supporting piece. The utility model has the advantages that compared with the prior art: when the trend of shaking appears in the supporting piece, the damping head of this damper can drive the supporting piece through the flexible activity cooperation of self and swing around or, come the centrifugal force that the buffering camera was shaken, avoid droing between camera and the damping arm, also can avoid the camera to appear shaking, guarantee shooting picture's stability.

Description

Damping head and damping mechanism

Technical Field

The utility model belongs to the technical field of shock absorption of vehicle-mounted shooting equipment and the like, and particularly relates to a shock absorption head and a shock absorption mechanism.

Background

When the vehicle-mounted photographing device photographs the mobile lens indoors and outdoors, for example, a vehicle is driven, in order to enable the camera to catch up with a photographed image, some auxiliary tools such as vehicles are usually used, the camera is connected to the vehicle-mounted photographing support, and the camera is fixed on the vehicle through the vehicle-mounted photographing support so as to catch up with the photographed image, however, in the photographing process, the photographed road condition can influence the camera and the vehicle-mounted photographing support, the lens can shake in the moving process, and in order to avoid shaking greatly, the photographed image is stable, and the camera is generally installed by adopting a damping arm and other structures. Conventional shock absorbing arms are typically mounted on a shock absorbing arm body using a shock absorbing spring, and a camera connecting assembly for connecting a camera is connected to a head of the shock absorbing arm body, and the whole structure is buffered by the shock absorbing spring.

The damping head comprises an external structure, a damping component and a connecting component, wherein the damping component comprises at least one first sliding rod and at least one second sliding rod which are arranged at intervals in parallel, the first sliding rod and the second sliding rod are vertically arranged, the two elastic pieces are respectively sleeved on the first sliding rod in a sleeved mode, the external structure is sleeved on the second sliding rod in a sliding mode, the damping component is clamped between the two elastic pieces of the second sliding rod, the second sliding rod is sleeved on the first sliding rod in a sliding mode, the damping component is clamped between the two elastic pieces of the first sliding rod, and the connecting component is fixedly connected with the damping component and is used for being externally connected with a photographic accessory; the elastic piece in the patent adopts the spring, and when the tripod head moves back and forth along the direction parallel to the direction of the first sliding rod or the second sliding rod, the spring can be compressed or stretched, so that the left-right or front-back movement of a camera arranged on the tripod head is slowed down, and the shock absorption is realized.

As can be seen from the above, the damping arm structure disclosed in the above patent buffers the whole structure through the damping spring, however, in the shooting process, the camera is difficult to shake and lateral inertia, so that the camera is easy to be separated from the head of the damping arm main body for control, and the shake of the camera or the stability caused by the lateral inertia is difficult to be balanced and is out of control.

Disclosure of utility model

In order to solve the above problems, a primary object of the present utility model is to provide a damping head and a damping mechanism, which can drive a support to swing back and forth or left and right through the telescopic movement of the support when the support has a swing trend, so as to buffer the centrifugal force of the swing of the camera, avoid the falling between the camera and a damping arm, and also avoid the shake of the camera, and ensure the stability of the photographed image.

In order to achieve the above purpose, the technical scheme of the utility model is as follows:

The utility model provides a damping head which comprises a connecting piece, a movable piece, a supporting piece and a damping structure, wherein the damping structure is respectively and movably connected with the connecting piece and the movable piece, one end of the movable piece is movably connected with the connecting piece, the other end of the movable piece is movably connected with the supporting piece, and one end, far away from the connecting piece, of the damping structure is movably connected with the supporting piece. In the utility model, the supporting piece is used for loading equipment such as a camera and the like needing damping, the connecting piece is used for installing the damping head on an external structure such as a car racket support and the like, the damping structure can drive the supporting piece to swing back and forth or left and right, the damping device has a rotation damping function, the movable piece can realize movable connection between the connecting piece and the supporting piece, and the movable degree of freedom of the supporting piece is realized on the premise of ensuring the stable structure of the supporting piece, so that the swinging of the supporting piece in the back and forth direction and the left and right direction is not disturbed. In the shooting process, when horizontal shake and inertial movement occur to the camera, the damping structure can drive the supporting piece and the camera to swing back and forth or left and right in the corresponding direction through the movement of the damping structure, the relative connecting piece moves to buffer the centrifugal force of the swing of the camera, the falling between the camera and the damping arm is avoided, the shake of the camera is avoided, and the stability of a shooting picture is ensured.

Further, the damping structure comprises a damping component and a transmission component, one end of the damping component is fixedly connected with the connecting piece, the other end of the damping component is movably connected with the transmission component, one end of the transmission component, which is far away from the damping component, is movably connected with the supporting piece, and one end, which is far away from the supporting piece, of the movable piece is movably connected with the transmission component. In the application, the damping component drives the supporting component to move indirectly through the transmission component, so that the stability of the structure is improved.

Further, the connecting piece is including the linking arm, be provided with the movable position on the linking arm, set up on the movable position on the movable part, drive assembly sets up the side at the movable position, and the coaxial swing joint of lateral wall, drive assembly, the movable part three in movable position. When the damping component acts, the movable piece and the transmission component can synchronously rotate, and the supporting piece is driven to swing, so that the stability of the structure can be improved.

Further, the damping component comprises a damping body and a telescopic part, wherein the damping body is fixed on the side wall of the connecting piece, one end of the telescopic part is movably connected with the transmission component, and the other end of the telescopic part is movably arranged in the damping body.

Further, the damping body comprises a damping fixing piece and a damping guide sleeve, the damping guide sleeve is fixed on the side wall of the connecting piece through the damping fixing piece, one end of the telescopic part is movably connected with the transmission assembly, and the other end of the telescopic part is movably arranged in the damping guide sleeve. In the application, when the camera shakes horizontally and inertially in the shooting process, the supporting member can also shake along with the camera when the camera is driven to shake, and at the moment, the telescopic part can be telescopic at the damping guide sleeve to enable the output end of the damping guide sleeve to pull or push the transmission member to drive the supporting member to move so as to buffer the centrifugal force of the camera to shake, thereby ensuring the stability of a shooting picture.

Further, the transmission assembly comprises a first transmission part and a second transmission part, one end of the first transmission part is connected with one end of the telescopic part, the other end of the first transmission part is rotationally connected with one end of the second transmission part, the other end of the second transmission part is rotationally connected with the supporting part, and the middle part of the first transmission part is rotationally connected with the movable part and the connecting part.

Further, the damping head further comprises a movable shaft, the movable shaft comprises a first shaft portion and a second shaft portion, a first rotating shaft seat is arranged on the movable piece, a second rotating shaft seat is arranged on the supporting piece, the first shaft portion is rotatably connected to the first rotating shaft seat, and the second shaft portion is rotatably connected to the second rotating shaft seat.

Further, the shock-absorbing structure comprises a plurality of shock-absorbing structures, wherein two shock-absorbing structures are respectively arranged on two sides of the connecting piece, and the movable piece and the movable shaft are arranged between the two shock-absorbing structures.

Further, the left and right sides of bearing spare is provided with a mount pad respectively, be provided with the bearing pivot on the mount pad, two shock-absorbing structure is connected with the bearing pivot rotation, just the second pivot seat sets up on two mount pad central lines. In the application, the damping structure is provided with two groups which are respectively arranged at the left side and the right side of the connecting arm, and can pull or push the transmission member to move through the telescopic pulling of the damping structure per se, when the damping structure and the transmission member shrink, the transmission member is pulled backwards, and when the damping structure and the transmission member stretch, the transmission member is pushed forwards. When the camera is extended or contracted simultaneously, the two parts synchronously pull or push the transmission part, so that the support part can be driven to swing back and forth, and the centrifugal force caused by the back and forth movement of the camera is buffered; when the two are in cross extension, the two are in cross pulling or pushing with the transmission part, the supporting part can be driven to swing left and right, and the left and right swinging centrifugal force caused by shaking of the camera is buffered, so that the horizontal front and back and left and right swinging of the supporting part is realized through the cooperation of different pulling forces or pushing forces of the two, the swinging of any angle of the camera is buffered, and the stability of the shooting picture of the camera is ensured.

The utility model also provides a damping mechanism with the damping head, which comprises a base, a damping component, a damping arm and the damping head, wherein one end of the damping arm is connected with the connecting piece, the other end of the damping arm is rotationally connected with the base, the damping component is arranged on the damping arm and is movably connected with the damping component, and one end of the damping component far away from the damping component is rotationally connected with the base.

Further, two damping arms are arranged side by side, the front ends of the damping arms are connected with the tail ends of the connecting arms, the two damping components are respectively and fixedly connected with the outer sides of the two damping arms,

Further, the buffer assembly comprises a first connecting rod and a second connecting rod, the damping assembly comprises a damping telescopic shaft and a damping guide sleeve, one end of the first connecting rod is rotationally connected with the base, the other end of the first connecting rod is rotationally connected with one end of the second connecting rod, the other end of the second connecting rod is movably connected with the output end of the damping telescopic shaft, one end of the damping telescopic shaft, far away from the second connecting rod, is movably arranged in the damping guide sleeve, and one end of the damping guide sleeve, far away from the damping telescopic shaft, is rotationally connected with the bottom of the end part of the damping arm. According to the damping telescopic shaft, the damping telescopic shaft can stretch and retract in the damping guide sleeve to adjust the length, and the damping telescopic shaft is matched with the rotation of the buffer assembly to adjust the stability of the damping arm in the rotation process. The method comprises the following steps: when the damping arm rotates up and down relative to the base, the damping telescopic shaft can drive the second connecting rod to rotate through the expansion of the damping telescopic shaft, and the first connecting rod is driven to rotate through the second connecting rod, so that shaking and impact force brought in the rotation process of the damping arm are regulated, and the rotation stability of the damping arm is improved.

Further, the second connecting rod is of a bevel structure, and the bevel position of the second connecting rod is fixedly connected to the damping arm. The second connecting rod can be connected to the damping arm through the bevel structure, so that the stability of the structure is improved.

The utility model has the advantages that compared with the prior art: when the trend of shaking appears in the supporting piece, the damping head of this damper can drive the supporting piece through the flexible activity cooperation of self and swing around or, come the centrifugal force that the buffering camera was shaken, avoid droing between camera and the damping arm, also can avoid the camera to appear shaking, guarantee shooting picture's stability.

Drawings

Fig. 1 is an isometric view of the present embodiment from a first perspective.

Fig. 2 is an isometric view of the present embodiment from a second perspective.

Fig. 3 is an isometric view of the middle damper head of the present embodiment.

Fig. 4 is a schematic structural diagram of the combination state of the movable member, the cross pivot, the first damper assembly, the first transmission assembly, the second damper assembly and the second transmission assembly in this embodiment.

Fig. 5 is a schematic structural diagram of the combined state of the damper assembly and the damper assembly according to the present embodiment.

Fig. 6 is an exploded view of the present embodiment.

In the figure:

1. Damping head, 2, base, 3, buffer unit, 4, damping unit.

11. The connecting piece, 12, the movable piece, 13, the supporting piece, 100, the first shock absorption structure, 200, the second shock absorption structure, 14, the first shock absorption assembly 15, the first transmission assembly, 16, the second shock absorption assembly, 17, the second transmission assembly, 18 and the cross pivot.

111. The device comprises a connecting arm, 112, a damping arm, 113, a movable position, 121, a first rotating shaft seat, 131, a second rotating shaft seat, 132 and a mounting seat. 141. The first shock-absorbing fixing piece, 142, the first shock-absorbing guide sleeve, 143, the first telescopic part, 151, the first rotary triangular piece, 152, the first transmission rod, 161, the second shock-absorbing fixing piece, 162, the second shock-absorbing guide sleeve, 163, the second telescopic part, 171, the second rotary triangular piece, 172 and the second transmission rod.

31. The damping guide sleeve comprises a first connecting rod, 32, a second connecting rod, 41, a damping telescopic shaft, 42 and a damping guide sleeve.

Detailed Description

The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

In order to achieve the above object, the technical solution of this embodiment is as follows:

Referring to fig. 1-4, the present embodiment provides a damping mechanism, which includes a damping head 1, the damping head 1 includes a connecting member 11, a movable member 12, a supporting member 13, and a damping structure, the damping structure is movably connected with the connecting member 11 and the movable member 12, one end of the movable member 12 is movably connected with the connecting member 11, the other end of the movable member 12 is movably connected with the supporting member 13, and one end of the damping structure 100 away from the connecting member 11 is movably connected with the supporting member 13.

Further, the two groups of damping structures are respectively a first damping structure 100 and a second damping structure 200, the first damping structure 100 comprises a first damping component 14 and a first transmission component 15, one end of the first damping component 14 is fixedly connected with the connecting piece 11, the other end of the first damping component is movably connected with the first transmission component 15, one end, far away from the first damping component 14, of the first transmission component 15 is movably connected with the supporting piece 13, and one end, far away from the supporting piece 13, of the movable piece 12 is movably connected with the first transmission component 15. In this embodiment, the first damping assembly 14 and the first transmission assembly 15 can be combined to form a first group of damping structures, the second damping assembly 16 and the second transmission assembly 17 can be combined to form a second group of damping structures, the two groups of damping structures are respectively arranged on the left and right sides of the connecting piece, and the horizontal front-back and left-right swinging of the supporting piece 13 can be realized through a synergistic effect so as to buffer the swinging of the camera at any angle, thereby ensuring the stability of the image shot by the camera.

Further, the first damping assembly 14 includes a first damping fixing member 141, a first damping guide sleeve 142, and a first telescopic portion 143, where the first damping fixing member 141 and the first damping guide sleeve 142 are combined to form a first damping body, the first transmission assembly 15 includes a first rotating triangular member 151 and a first transmission rod 152, the first damping guide sleeve 142 is fixed on a side wall of the connecting member 11 through the first damping fixing member 141, and a front end of the first telescopic portion 143 is movably connected with an upper end of the first rotating triangular member 151, and a tail end of the first damping guide sleeve is movably disposed in the first damping guide sleeve 142. The lower end of the first rotation triangular piece 151 is rotatably connected with the upper end of the first transmission rod 152, and the lower end of the first transmission rod 152 is rotatably connected with the supporting piece 13.

Further, the second damping assembly 16 includes a second damping fixing member 161, a second damping guide sleeve 162, and a second telescopic portion 163, where the second damping fixing member 161 and the second damping guide sleeve 162 are combined to form a second damping body, the second transmission assembly 17 includes a second rotating triangular member 171 and a second transmission rod 172, the second damping guide sleeve 162 is fixed on a side wall of the connecting member 11 through the second damping fixing member 161, and a front end of the second telescopic portion 163 is rotatably connected with an upper end of the second rotating triangular member 171, and a tail end of the second telescopic portion is movably disposed in the second damping guide sleeve 162. The lower end of the second rotation triangular piece 171 is rotatably connected with the upper end of the second transmission rod 172, and the lower end of the second transmission rod 172 is rotatably connected with the bearing 13.

In the application, the first damping component 14 and the second damping component 16 both adopt titanium ruler structures, and the damping function is realized through the telescopic movement of the titanium ruler.

Further, the connecting piece 11 includes a connecting arm 111, a movable position 113 is disposed on the connecting arm 111, the upper end of the movable piece 12 is rotatably connected to the movable position, the first rotary triangular piece 151 and the second rotary triangular piece 171 are disposed on two sides of the movable position, and the side wall of the movable position, the first rotary triangular piece 151, the second rotary triangular piece 171 and the movable upper end are coaxially rotatably connected. When the first damping component 14 and the second damping component 16 act, the movable piece 12, the first rotating triangular piece 151 and the second rotating triangular piece 171 can synchronously rotate, and the supporting piece 13 is driven to swing, so that the stability of the structure can be improved.

Further, the damping head 1 further comprises a movable shaft, the movable shaft adopts a cross pivot 18, the movable member 12 and the cross pivot 18 are clamped between the first transmission assembly 15 and the second transmission assembly 17, a first rotating shaft seat 121 is arranged at the lower end of the movable member 12, a second rotating shaft seat 131 is arranged on the supporting member 13, an installation seat 132 is respectively arranged at the left side and the right side of the supporting member 13, which are positioned on the second rotating shaft seat 131, a steering pin is arranged on the installation seat 132, and the lower ends of the first transmission rod 152 and the second transmission rod 172 are respectively connected to the steering pins at the left side and the right side in a rotating manner. The cross pivot 18 includes a first shaft portion and a second shaft portion perpendicular to each other, the first shaft portion is rotatably connected to the first rotating shaft seat 121, and the second shaft portion of the cross pivot 18 is rotatably connected to the second rotating shaft seat 131.

In this embodiment, the supporting member 13 is used for loading devices such as a camera and the like that need to be damped, the connecting member 11 is used for installing the damping head 1 on an external structure such as a car racket support, the first damping component 14 can drive the supporting member 13 to swing back and forth or left and right through the first transmission component 15, the second damping component 16 can drive the supporting member 13 to swing back and forth or left and right through the second transmission component 17, the damping device has a rotation damping function, the movable member 12 can realize the rotational connection between the connecting arm 111 and the supporting member 13 through the cross pivot 18, the movable degree of freedom of the supporting member 13 is realized on the premise of ensuring the structural stability of the supporting member 13, and the swinging of the supporting member 13 back and forth and left and right is not disturbed. In the shooting process, when the camera shakes horizontally and moves inertially, the telescopic parts respectively arranged at the left side and the right side of the connecting arm 111 can stretch and retract in the damping guide sleeve, the transmission part is pulled or pushed to move through self stretching, when the camera is contracted, the transmission part is pulled backwards, and when the camera is extended, the transmission part is pushed forwards. When the camera is extended or contracted simultaneously, the two parts synchronously pull or push the transmission part, so that the support part 13 can be driven to swing back and forth, and the centrifugal force caused by the back and forth movement of the camera is buffered; when the two are in crossed extension and retraction, the two are crossed to pull or push the transmission part, so that the supporting part 13 can be driven to swing left and right, and the left and right swinging centrifugal force caused by the shaking of the camera is buffered, so that the horizontal front and back and left and right swinging of the supporting part 13 is realized through the cooperation of different pulling forces or pushing forces of the two, the swinging of the supporting part 13 at any angle is buffered, the falling between the camera and the damping arm 112 is avoided, and the stability of the picture shot by the camera is ensured.

Further, the damping mechanism of this embodiment further includes a base 2, a damping component 3, and a damping component 4, where the end of the damping arm 112 is coaxially and rotatably connected with the base 2, the end of the damping component 3 is rotatably connected with the base 2, the front end of the damping component 4 is rotatably connected with the end of the damping component 4, and the front end of the damping component 4 is rotatably connected with the front end of the damping arm 112.

Further, the connecting piece 11 further includes two shock absorbing arms 112, the two shock absorbing arms 112 are arranged side by side, the first shock absorbing fixing piece 141 and the second shock absorbing fixing piece 161 are respectively and fixedly connected to the outer sides of the two shock absorbing arms 112, and the front ends of the shock absorbing arms 112 are connected to the tail ends of the connecting arms 111.

Further, the buffer assembly 3 comprises a first connecting rod 31, a second connecting rod 32, the damping assembly 4 comprises a damping telescopic shaft 41 and a damping guide sleeve 42, the tail end of the first connecting rod 31 is rotationally connected with the base 2, the front end of the first connecting rod is rotationally connected with the tail end of the second connecting rod 32, the front end of the second connecting rod 32 is movably connected with the output end of the damping telescopic shaft 41, one end, far away from the second connecting rod 32, of the damping telescopic shaft 41 is movably arranged in the damping guide sleeve 42, and one end, far away from the damping telescopic shaft 41, of the damping guide sleeve 42 is rotationally connected with the bottom of the front end of the damping arm 112. In the application, the damping telescopic shaft 41 can move telescopically in the damping guide sleeve 42, adjust the length and adjust the stability of the damping arm 112 in the rotating process by matching with the rotation of the buffer assembly 3. The method comprises the following steps: when the damping arm 112 rotates up and down relative to the base 2, the damping telescopic shaft 41 can drive the second connecting rod 32 to rotate through the expansion of the damping telescopic shaft, and drive the first connecting rod 31 to rotate through the second connecting rod 32, so as to adjust shaking and impact force brought by the rotation process of the damping arm 112, and improve the rotation stability of the damping arm 112. In the embodiment, the damping component 4 adopts a damping titanium ruler, and damping expansion and contraction are realized by utilizing the principle of the titanium ruler, so as to buffer shaking and impact force.

Further, the second connecting rod 32 has a folded angle structure, and the folded angle of the second connecting rod 32 is fixedly connected to the damping arm 112. The second link 32 can be connected to the damper arm 112 by a bent angle structure, improving structural stability.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.

Claims (10)

1. The utility model provides a damping head, its characterized in that includes connecting piece, moving part, bearing piece and shock-absorbing structure, shock-absorbing structure respectively with connecting piece moving part swing joint, the one end of moving part with connecting piece swing joint, the other end and bearing piece swing joint, just shock-absorbing structure keep away from the one end and the bearing piece swing joint of connecting piece.

2. The damping head according to claim 1, wherein the damping structure comprises a damping component and a transmission component, one end of the damping component is fixedly connected with the connecting piece, the other end of the damping component is movably connected with the transmission component, one end of the transmission component, which is far away from the damping component, is movably connected with the supporting piece, and one end of the movable component, which is far away from the supporting piece, is movably connected with the transmission component.

3. The damping head according to claim 2, wherein the connecting piece comprises a connecting arm, a movable position is arranged on the connecting arm, the movable piece is arranged on the movable position, the transmission assembly is arranged on the side edge of the movable position, and the side wall of the movable position, the transmission assembly and the movable piece are coaxially and movably connected.

4. A shock absorbing head as claimed in claim 2, wherein the shock absorbing assembly comprises a shock absorbing body and a telescopic part, the shock absorbing body is fixed on the side wall of the connecting piece, one end of the telescopic part is movably connected with the transmission assembly, and the other end of the telescopic part is movably arranged in the shock absorbing body.

5. The damping head according to claim 4, wherein the transmission assembly comprises a first transmission member and a second transmission member, one end of the first transmission member is connected with one end of the telescopic part, the other end of the first transmission member is rotatably connected with one end of the second transmission member, the other end of the second transmission member is rotatably connected with the supporting member, and the middle part of the first transmission member is rotatably connected with the movable member and the connecting member.

6. The shock absorbing head of claim 1, further comprising a movable shaft, wherein the movable shaft comprises a first shaft portion and a second shaft portion, wherein the movable member is provided with a first rotating shaft seat, wherein the supporting member is provided with a second rotating shaft seat, wherein the first shaft portion is rotatably connected with the first rotating shaft seat, and wherein the second shaft portion is rotatably connected with the second rotating shaft seat.

7. A shock absorbing head as claimed in claim 6, wherein said shock absorbing structure comprises a plurality of said shock absorbing structures, two of said shock absorbing structures being disposed on opposite sides of said connecting member, said movable member and said movable shaft being disposed between said shock absorbing structures.

8. The damping head according to claim 7, wherein a mounting seat is provided on each of two sides of the supporting member, a supporting rotating shaft is provided on each of the mounting seats, the two damping structures are rotatably connected to the supporting rotating shaft, and the second rotating shaft seat is provided on a central line of the two mounting seats.

9. The damping mechanism is characterized by comprising a base, a damping component, a damping arm and the damping head according to any one of claims 1-8, wherein one end of the damping arm is connected with the connecting piece, the other end of the damping arm is rotationally connected with the base, the damping component is arranged on the damping arm and is movably connected with the damping component, and one end, far away from the damping component, of the damping component is rotationally connected with the base.

10. The damping mechanism according to claim 9, wherein the damping assembly comprises a first connecting rod and a second connecting rod, the damping assembly comprises a damping telescopic shaft and a damping guide sleeve, one end of the first connecting rod is rotationally connected with the base, the other end of the first connecting rod is rotationally connected with one end of the second connecting rod, the other end of the second connecting rod is movably connected with the output end of the damping telescopic shaft, one end of the damping telescopic shaft, far away from the second connecting rod, is movably arranged in the damping guide sleeve, and one end of the damping guide sleeve, far away from the damping telescopic shaft, is rotationally connected with the bottom of the end part of the damping arm.