Damping-adjustable damper unit

Abstract

The present application relates to a kind of damping adjustable damping unit, including shell and the damping assembly installed in shell, damping assembly includes several damping sheet, damping sheet has the damping contact part for forming friction damping with the contact of shaft, the damping contact part of damping sheet is equipped with pivot joint and can be pivoted on shell by pivot installation, the damping sheet is divided into the positive direction damping sheet and reverse damping sheet, and the damping contact part of positive direction damping sheet and the damping contact part of reverse damping sheet form the expandable and contractable clamp, damping assembly further includes the damping adjusting mechanism of the damping contact part of driving damping sheet swing around pivot, and the damping adjusting mechanism drives positive direction damping sheet and reverse damping sheet synchronous swing to drive clamp expansion and contraction, and damping adjusting mechanism has adjusting operation end.It has the advantages that damping size can be adjusted, and it is easy to use.

Description

TECHNICAL FIELD

[0001] The present application relates to a damping unit. BACKGROUND

[0002] The damping unit is a device for providing resistance to movement and dissipating kinetic energy. There are various structural forms of existing damping solutions, among which a damping structure for buffering between two members rotating relative to each other around an axis adopts: a plurality of damping pieces are sleeved on the shaft in the axial direction to achieve, the damping piece includes a damping contact part in contact with the shaft to form a frictional damping, the damping contact part is an open ring, the damping contact part radially protrudes with a fixing finger, the fixing finger is inserted into a positioning groove on the other member rotating relative to the shaft to prevent the damping piece from rotating with the shaft, so as to achieve frictional damping through the direct contact of the damping piece with the shaft. The damping of this damping structure relies on the contact friction force between the damping piece and the shaft, the damping piece is a metal piece, and has the advantages of simple structure, stable and controllable damping, and long service life, but this damping structure has the defect that the damping cannot be flexibly adjusted. Although the above damping structure can obtain adjustment of damping force by selecting the number of damping pieces, the damping adjustment is to select the number of damping pieces during assembly, and the damping force cannot be flexibly adjusted according to needs during the later use process after the damping structure is assembled. Moreover, such damping structure is usually assembled into corresponding equipment as a component, such as a damping hinge (see CN 201620330937.X and CN 205558580U), which has the defect of inconvenient use. SUMMARY

[0003] The present application aims to overcome the defects of the prior art, and provides a damping unit with adjustable damping size, which has the advantage of convenient use.

[0004] To achieve the above-mentioned purpose, the present application provides the following technical scheme:

[0005] A damping-adjustable damping unit, comprising a housing and a damping assembly installed in the housing, the damping assembly comprising a plurality of damping pieces, the damping piece having a damping contact part for contacting the shaft to form a frictional damping, characterized in that: one end of the damping contact part of the damping piece is provided with a pivot joint part and is pivotally installed on the housing through a pivot shaft, the damping piece is divided into a positive damping piece and a reverse damping piece with the damping contact part arranged in positive and negative directions along the pivot shaft, the damping contact part of the positive damping piece and the damping contact part of the reverse damping piece form an expandable and contractible clamping opening, the damping assembly further comprises a damping adjustment mechanism for driving the damping contact part of the damping piece to swing around the pivot shaft, the damping adjustment mechanism drives the positive damping piece and the reverse damping piece to swing synchronously to drive the clamping opening to expand and contract, and the damping adjustment mechanism has an adjustment operation end.

[0006] The damping unit is arranged on a component opposite to the shaft in rotation and in contact with the shaft to form a frictional damping. The damping contact portions of the forward and reverse damping sheets form a clamping to the shaft. Since the damping sheets are rotatably mounted on the housing, the damping contact portions swing around the pivot, so that the clamping can be adjusted in contraction and expansion, that is, the clamping force of the clamping to the shaft is adjusted, and the frictional damping force of the damping contact portions to the shaft is adjusted. The damping sheet type damping unit can be adjusted in damping size during use, and is more convenient to use. The clamping force of the damping sheet to the shaft is used to realize the damping to the shaft, and the damping is stable and reliable.

[0007] Preferably, the damping adjusting mechanism comprises a clamping opening opening member mounted on the housing, the clamping opening opening member is in abutment with the damping sheet, and provides an elastic driving force required for driving the damping sheet to swing to form a clamping opening expansion movement,

[0008] and a damping retaining assembly, the damping retaining assembly comprises a pushing member movably fitted on the housing and lockable on the housing, the pushing member has a first abutment portion in abutment with the forward damping sheet and a second abutment portion in abutment with the reverse damping sheet, the forward damping sheet is in abutment with the first abutment portion driven by the clamping opening opening member, the reverse damping sheet is in abutment with the second abutment portion driven by the clamping opening opening member, the pushing member drives the forward and reverse damping sheets to swing synchronously through the first and second abutment portions, and the adjusting operation end is drivingly connected to the pushing member. In this structure, the clamping opening opening member provides an elastic opening force for the expansion of the clamping opening, the adjusting operation end drives the pushing member to act, and cooperates with the elastic driving force of the clamping opening opening member to control the swinging of the forward and reverse damping sheets to realize the contraction and expansion of the clamping opening, so as to realize the adjustment of the damping force size. The pushing member can be locked on the housing to realize the position retention of the damping sheet, and has the advantages of simple structure and stable and reliable adjustment.

[0009] Preferably, the pushing member is slidably fitted on the housing in a direction, and the adjusting operation end comprises an adjusting screw, a threaded hole seat is arranged on the housing, the adjusting screw is threadedly screwed on the threaded hole of the threaded hole seat, and the adjusting screw is in abutment with the pushing member. In this structure, the adjusting screw is rotated, moves axially under the guidance of the threaded hole of the threaded hole seat, and since the damping sheet is in abutment with the pushing member under the elastic driving of the clamping opening opening member, the pushing member can slide with the movement of the adjusting screw to realize the damping adjustment. In this structure, the adjusting screw can be used to drive the pushing member, and has a self-locking function, and has the advantages of simple and compact structure and convenient use.

[0010] Preferably, the damping plate further includes a driving arm, with the driving arm and damping contact portion respectively located at both ends of the pivot portion. The driving arm extends away from the damping contact portion. The driving arm of the positive damping plate and the driving arm of the negative damping plate are arranged opposite to each other, forming a gap between the driving arm of the positive damping plate and the driving arm of the negative damping plate. The driving arm and damping contact portion of the same damping plate are located on the same side of the pivot portion in the transverse direction, so that the clamping jaws close when the gap expands. The pushing member is a slider with a wedge-shaped portion. The two inclined surfaces of the wedge-shaped portion respectively constitute the first abutment portion and the second abutment portion, and the wedge-shaped portion is correspondingly fitted into the gap.

[0011] Preferably, the clamping spring-opening component includes a first spring plate and a second spring plate, and the driving arm of the damping plate is clamped between the first spring plate and the second spring plate. The first spring plate abuts against the side of the driving arm of the positive damping plate away from the gap, and the second spring plate abuts against the side of the driving arm of the negative damping plate away from the gap.

[0012] Preferably, the positive damping plates and the negative damping plates are arranged in an alternating overlapping manner. This structural design provides a more stable and reliable clamping of the shaft, and offers more stable and reliable damping.

[0013] Preferably, the clamp has a radially engaging opening opposite the pivot portion, allowing the shaft to enter and exit the clamp radially. The housing has a fastening mounting portion and a lateral clearance opening corresponding to the radially engaging opening, allowing the radially engaging opening to be exposed within the housing; or / and the clamp has an axial port, after expansion, allowing the shaft to enter and exit the clamp axially. The housing has a fastening mounting portion and an axial clearance opening corresponding to the axial port of the clamp, allowing the axial port of the clamp to be exposed within the housing. This structural design enables a modular design of the adjustable damping unit. The damping plate is fastened to the shaft or removed from under the shaft along the radially engaging opening, allowing for quick assembly and disassembly of the adjustable damping unit.

[0014] Preferably, the damping contact portion is arc-shaped, and the wall of the corresponding clamp is concave arc-shaped. With this structural design, the damping force of the damping plate on the shaft is more stable and reliable.

[0015] The present invention will now be further described with reference to the accompanying drawings. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of an adjustable damping unit according to a specific embodiment of the present invention;

[0017] Figure 2 This is a top view of a damping adjustable damping unit according to a specific embodiment of the present invention;

[0018] Figure 3 for Figure 2 A sectional view taken along line AA.

[0019] Figure 4 It is an exploded view of the damping adjustable damping unit of the embodiment of the present application;

[0020] Figure 5 It is a reference diagram of the damping adjustable damping unit in use of the embodiment of the present application;

[0021] Figure 6 It is a structural schematic diagram of the damping adjustable damping unit of the embodiment of the present application;

[0022] Figure 7 It is a top view of the damping adjustable damping unit of the embodiment of the present application;

[0023] Figure 8 It is Figure 7 It is a sectional view along the line B-B;

[0024] Figure 9 It is an exploded view of the damping adjustable damping unit of the embodiment of the present application;

[0025] Figure 10 It is a structural schematic diagram of the damping adjustable damping unit of the embodiment of the present application;

[0026] Figure 11 It is a structural schematic diagram of the damping adjustable damping unit of the embodiment of the present application. DETAILED DESCRIPTION Embodiment one

[0027] Referring to the accompanying drawings Figures 1-5The application discloses a damping-adjustable damping unit which is arranged on a component opposite to shaft I and in contact with shaft I to form friction damping, and comprises a shell 1 and a damping assembly arranged in the shell 1. The damping assembly comprises a plurality of damping sheets 2 (wherein the plurality of damping sheets 2 means two or more than two damping sheets 2), the damping sheet 2 is provided with a damping contact part 21 for being in contact with shaft I to form friction damping, the damping contact part 21 of the damping sheet 2 is provided with a pivot part 22 at one end and is pivotally arranged on the shell 1 through a pivot 3, the damping sheet 2 is divided into a positive damping sheet 2-1 and a reverse damping sheet 2-2 which are arranged in positive and reverse directions along the pivot 22 in a radial direction of the damping contact part 21, the damping contact part 21 of the positive damping sheet 2-1 and the damping contact part 21 of the reverse damping sheet 2-2 form an expandable and contractible clamping opening 4, the clamping opening 4 clamps shaft I to provide friction damping of the rotation of shaft I, the damping assembly further comprises a damping adjusting mechanism for driving the damping contact part 21 of the damping sheet 2 to swing around the pivot 3, the damping adjusting mechanism drives the positive damping sheet 2-1 and the reverse damping sheet 2-2 to swing synchronously to drive the clamping opening 4 to expand and contract, and the damping adjusting mechanism is provided with an adjusting operation end for operating the damping adjusting mechanism to drive the positive damping sheet 2-1 and the reverse damping sheet 2-2 to swing, so that the clamping force of the clamping opening 4 clamping shaft I is adjusted, that is, the damping force of the shaft is adjusted. Since the damping sheet is pivotally arranged on the shell and the damping contact part swings around the pivot, the clamping opening can be adjusted to expand and contract, that is, the clamping force of the clamping opening to shaft I is adjusted, that is, the friction damping force of the damping contact part to shaft I is adjusted; the damping unit adopting the damping sheet type can be flexibly adjusted in use, the damping adjustment can be made according to the operation of the equipment carrying the damping unit after the damping unit is assembled, and the use is more convenient. The damping of the shaft is realized through the clamping force of the damping sheet to the shaft, the damping sheet has a stable structure, and can provide greater strength and more stable damping.

[0028] The damping adjustable damping unit of the present application can be carried in the corresponding device as part of the corresponding device, that is, the shell is part of the shell of the corresponding device, and in order to make the adjustable damping unit more flexible, the damping unit preferably adopts an independent shell integrated damping assembly as a single accessory, and is designed to be detachable to facilitate users to select according to needs. The specific optimization design is as follows: the clamping opening 4 has a shaft radial buckle opening 41 opposite to the pivot part 22 and for the shaft I to enter and exit the clamping opening 4 along the radial direction, that is, the clamping opening has a shaft radial buckle opening, which can be buckled on the shaft or the clamping opening is out of the shaft along the radial direction of the shaft when the clamping opening is expanded to a certain extent. The shell 1 is provided with a fastening mounting part 11 for fixing and mounting the damping unit to the corresponding device, and in the specific embodiment, the fastening mounting part 11 is a mounting ear with a screw connection hole. The shell 1 also has a lateral avoiding opening 12 corresponding to the position of the shaft radial buckle opening 41 for the shaft radial buckle opening 41 to expose the shell 1. On the basis of adjustable damping piece formed clamping opening, further optimization design can be carried out to achieve damping unit accessory (or modular) design to achieve independent disassembly. When the damping unit is disassembled, the required damping demand can be ignored. After assembly is completed, the damping is adjusted to the required size, which is more flexible and convenient to use. Or the damping unit can have a structure for disassembly along the axis of the shaft. The clamping opening 4 has an axial port 42 for the shaft I to enter and exit the clamping opening 4 along the axial direction after expansion. The shell 1 is provided with an axial avoiding opening 14 corresponding to the axial port 42 of the clamping opening 4 for the axial port 42 of the clamping opening 4 to expose the shell 1. Of course, in some application occasions, only the axial avoiding opening 14 can be reserved to realize the structure design of the damping unit disassembled along the axis of the shaft.

[0029] The damping adjusting mechanism comprises a clamping opening pop-open member 51 mounted on the shell 1 and abutting against the damping sheet 2 and providing the elastic driving force required for driving the damping sheet 2 to swing to constitute the expansion movement of the clamping opening 4, and a damping holding assembly comprising a pushing member 52 movably fitted on the shell 1 and lockable on the shell 1, the pushing member 52 having a first abutting portion 521 abutting against the forward damping sheet 2-1 and a second abutting portion 522 abutting against the reverse damping sheet 2-2, the forward damping sheet 2-1 being driven by the clamping opening pop-open member 51 to abut against the first abutting portion 521, the reverse damping sheet 2-2 being driven by the clamping opening pop-open member to abut against the second abutting portion 522, the pushing member 52 driving the forward damping sheet 2-1 and the reverse damping sheet 2-2 to swing synchronously via the first abutting portion 521 and the second abutting portion 522, the pushing member 52 applying force to the forward damping sheet and the reverse damping sheet via the first abutting portion and the second abutting portion, so as to achieve the synchronous action of the forward damping sheet and the reverse damping sheet, and the expansion and contraction of the clamping opening are completed under the synchronous action, and the adjusting operation end drives the pushing member 52. The clamping opening pop-open member provides the elastic pop-open force of the expansion of the clamping opening, the adjusting operation end drives the pushing member to act, and cooperates with the elastic driving force of the clamping opening pop-open member, so as to achieve the control of the swing of the forward damping sheet and the reverse damping sheet to realize the folding and expansion of the clamping opening 4, thereby realizing the adjustment of the damping force, the pushing member can be locked on the shell, the position of the damping sheet is kept, that is, after the damping adjustment is completed, the damping force is maintained in the state after the adjustment is completed, and the damping adjusting mechanism has the advantages of simple structure and stable and reliable adjustment. The force in one rotation direction of the damping sheet rotating around the pivot (corresponding to the opening of the clamping opening 4) depends on the elastic force (provided by the clamping opening pop-open member 51), and the action corresponding to the control of the folding of the clamping opening 4 is realized by the active pushing of the damping sheet by the pushing member, so as to achieve the control of the damping force of the damping sheet on the shaft, and after the pushing member is locked on the shell, the damping force is stably maintained. Under the guidance of the essential spirit of the present application, the mechanism for driving the damping sheet to reciprocate can also be realized by directly hingedly connecting the movable member and the damping member, but the hinge has the defects of complex structure, variable assembly operation and insufficient structural stability.

[0030] Further, the push member 52 is slidingly fitted on the housing 1, a guide structure (such as a groove or a raised track or the like) is arranged on the housing 1 to guide the push member 52, the adjusting operation end comprises an adjusting screw 53, a threaded hole seat 13 is arranged on the housing 1, the adjusting screw 52 is threadedly fitted on the threaded hole of the threaded hole seat 13, and the adjusting screw 52 abuts against the push member 52. Rotating the adjusting screw, the adjusting screw moves axially under the guidance of the threaded hole of the threaded hole seat, and since the damping sheet abuts against the push member under the elastic driving of the clamping opening elastic opening member 51, the push member can slide with the movement of the adjusting screw, and damping adjustment is realized. Under this structure, the adjusting screw can be used to drive the push member, and has self-locking function, and has the advantages of simple and compact structure and convenient use; and the adjusting precision can be better controlled through the threaded cooperation of the adjusting screw. Therefore, those skilled in the art can think that the push member can adopt an independent locking structure, such as a pressing screw pressing on the push member 53; as shown in the figure, the push member 52 can also adopt a cam rotatingly fitted on the housing, the cam surface of the cam is in top pushing cooperation with the damping sheet, and the cam is rotated to control the convergence and expansion of the clamping opening 4. Figure 10

[0031] ​In order to facilitate the installation and arrangement of the damping adjusting mechanism, the damping piece 2 further comprises a driving arm 23, the driving arm 23 and the damping contact part 21 are respectively arranged at both ends of the pivot joint part 22, the driving arm 23 extends away from the damping contact part 21, the driving arm of the positive damping piece 2-1 and the driving arm of the reverse damping piece 2-2 are oppositely arranged, and the interval opening 6 is formed between the driving arm of the positive damping piece 2-1 and the driving arm of the reverse damping piece 2-2, the driving arm and the damping contact part 21 of the same damping piece 2 are located on the same side of the transverse direction of the pivot joint part 22, so that the clamping opening 4 is in the closing action when the interval opening 6 is expanded, the pushing piece 52 is a slider with a wedge-shaped part 52-1, two inclined surfaces of the wedge-shaped part 52-1 respectively form the first abutting part 521 and the second abutting part 522, and the wedge-shaped part 52-1 is correspondingly matched in the interval opening 6. That is, the wedge-shaped part of the slider is wedged in the interval opening, and with the movement of the slider, the positive damping piece and the reverse damping piece are pushed to open the interval opening, and at the same time, the clamping opening is closed to tightly hold the shaft. The structure is simple and stable. In addition, the clamping opening opening member 51 comprises a first spring piece 51-1 and a second spring piece 51-2, one end of the first spring piece 51-1 and the second spring piece 51-2 is fixed on the shell 1, an insertion slot is arranged on the shell 1, one end of the first spring piece 51-1 and the second spring piece 51-2 is inserted into the insertion slot, the driving arm 23 of the damping piece 2 is clamped between the first spring piece 51-1 and the second spring piece 51-2, the first spring piece 51-1 is in abutting cooperation with the driving arm of the positive damping piece 2-1 away from one side of the interval opening 6, and the second spring piece 51-2 is in abutting cooperation with the driving arm of the reverse damping piece 2-2 away from one side of the interval opening 6; all the positive damping pieces are in abutting cooperation on the same first spring piece, and all the reverse damping pieces are in abutting cooperation on the same second spring piece. When the second spring piece and the driving arm of the positive damping piece are away from each other, the driving arm of the second spring piece presses the first spring piece, the first spring piece is deformed to form an elastic force, and the second spring piece is deformed to form an elastic force in the same way. The function of the clamping opening opening member is to provide an elastic driving force for the swing of the damping piece, so in addition to the spring piece design, a helical spring or a torsional spring can also be used, but the spring piece design has the advantages of simple and compact structure and easy installation.

[0032] In order to make the damping piece hold the shaft more stably and reliably, the positive damping piece 2-1 and the reverse damping piece 2-2 are arranged in turn to balance the force applied by the damping piece to the shaft.

[0033] In order to ensure the contact area of the damping contact part with the shaft, so as to ensure that the damping piece provides stable and reliable damping force, the damping contact part preferably adopts the common circular arc shape in the prior art, the damping contact part 21 corresponding to the wall 211 in the clamping opening 4 is a concave arc (so as to better adapt to the circumferential surface of the shaft), of course, as easily thought by those skilled in the art: the wall corresponding to the damping contact part in the clamping opening can also be a plane, and the contact with the shaft is linear contact. Specific embodiment two

[0034] As Figures 6-9 shown, the present application discloses a kind of damping adjustable damping unit, for being configured in the component opposite rotation with shaft and being contacted with shaft to constitute frictional damping, it is mainly different from the damping adjustable damping unit of specific embodiment one in that: the driving arm 23 of same the damping sheet 2 and damping contact portion 21 are located at the lateral sides of pivot joint portion 22, so that the clamping opening 4 is expanded when the interval opening 6 expands, and the clamping opening 4 is expanded when the interval opening 6 expands;Corresponding pusher uses top pressure driving arm to make the interval opening formed by driving arm contract, and the pusher 52 has V-shaped opening 523, the two inclined planes of V-shaped opening 523 respectively constitute the first abutment portion 521 and the second abutment portion 522, the driving arm 23 of the damping sheet 2 is placed in V-shaped opening 522, and the clamping opening opening member is arranged in the interval opening 6.The pusher is provided with a through hole at the vertex position of the V-shaped opening, the adjusting bolt passes through the through hole, the head of the adjusting bolt abuts against the pusher, and the threaded hole seat is arranged in the V-shaped opening, so as to increase the size of the V-shaped opening.It is thus advantageous to increase the size of the V-shaped opening.Because the clamping opening opening member is arranged in the interval opening, so as to make the clamping opening opening member simple and reliable, the clamping opening opening member 51 adopts the strutting spring clip with two outwardly expanding spring sheets 51-3, and the two spring sheets of the strutting spring clip respectively abut on the driving arm of the positive damping sheet and the driving arm of the reverse damping sheet.Similarly, according to the description in specific embodiment, the clamping opening opening member can also be a spiral spring, a torsion spring or a two-spring sheet design. Specific embodiment three

[0035] As Figure 11 shown, the present application discloses a kind of damping adjustable damping unit, for being configured in the component opposite rotation with shaft and being contacted with shaft to constitute frictional damping, it is mainly different from the damping adjustable damping unit of specific embodiment one in that: the driving arm 23 of same the damping sheet 2 and damping contact portion 21 are located at the lateral sides of pivot joint portion 22, so that the clamping opening 4 is expanded when the interval opening 6 expands, and the clamping opening 4 is expanded when the interval opening 6 expands;Corresponding pusher uses top pressure driving arm to make the interval opening formed by driving arm contract, and the pusher 52 has V-shaped opening 523, the two inclined planes of V-shaped opening 523 respectively constitute the first abutment portion 521 and the second abutment portion 522, the driving arm 23 of the damping sheet 2 is placed in V-shaped opening 522, and the clamping opening opening member is arranged in the interval opening 6.The pusher is provided with a through hole at the vertex position of the V-shaped opening, the adjusting bolt passes through the through hole, the head of the adjusting bolt abuts against the pusher, and the threaded hole seat is arranged in the V-shaped opening, so as to increase the size of the V-shaped opening.It is thus advantageous to increase the size of the V-shaped opening.Because the clamping opening opening member is arranged in the interval opening, so as to make the clamping opening opening member simple and reliable, the clamping opening opening member 51 adopts the strutting spring clip with two outwardly expanding spring sheets 51-3, and the two spring sheets of the strutting spring clip respectively abut on the driving arm of the positive damping sheet and the driving arm of the reverse damping sheet.Similarly, according to the description in specific embodiment, the clamping opening opening member can also be a spiral spring, a torsion spring or a two-spring sheet design.

Claims

1. A damping adjustable damping unit, comprising a housing and a damping assembly installed within the housing, the damping assembly comprising a plurality of damping plates, each damping plate having a damping contact portion for contacting a shaft to form frictional damping, characterized in that: The damping plate has a pivot at one end of its damping contact portion and is pivotally mounted on the housing. The damping plate is divided into a forward damping plate and a reverse damping plate, with the damping contact portions arranged radially in opposite directions along the pivot. The damping contact portions of the forward damping plate and the reverse damping plate form an expandable and contractible clamp. The damping assembly also includes a damping adjustment mechanism that drives the damping contact portions of the damping plates to swing around the pivot. The damping adjustment mechanism drives the forward damping plate and the reverse damping plate to swing synchronously to drive the clamp to expand and contract. The damping adjustment mechanism has an adjustment operation end.

2. The adjustable damping unit according to claim 1, characterized in that: The damping adjustment mechanism includes a clamp spring-opening member mounted on the housing. The clamp spring-opening member abuts against the damping plate and provides the elastic driving force required to drive the damping plate to swing and form the clamp expansion movement. The damping retaining assembly includes a pusher that is movably fitted onto the housing and can be locked onto the housing. The pusher has a first abutting portion that abuts against a positive damping plate and a second abutting portion that abuts against a negative damping plate. The positive damping plate is driven by a clamping spring-opening member to abut against the first abutting portion, and the negative damping plate is driven by a clamping spring-opening member to abut against the second abutting portion. The pusher drives the positive and negative damping plates to swing synchronously via the first and second abutting portions, and the adjusting operation end drives the pusher.

3. The adjustable damping unit according to claim 2, characterized in that: The pusher is slidably fitted onto the housing. The adjustment operation end includes an adjustment bolt. A threaded hole seat is provided on the housing. The adjustment bolt is threaded onto the threaded hole of the threaded hole seat and abuts against the pusher.

4. The adjustable damping unit according to claim 3, characterized in that: The damping plate also includes a drive arm, with the drive arm and damping contact portion respectively located at both ends of the pivot portion. The drive arm extends away from the damping contact portion. The drive arm of the positive damping plate and the drive arm of the negative damping plate are arranged opposite to each other, forming a gap between the drive arm of the positive damping plate and the drive arm of the negative damping plate. The drive arm and damping contact portion of the same damping plate are located on the same side of the pivot portion in the transverse direction, so that the clamping jaws close when the gap expands. The pushing member is a slider with a wedge-shaped portion. The two inclined surfaces of the wedge-shaped portion respectively constitute the first abutment portion and the second abutment portion, and the wedge-shaped portion is correspondingly fitted into the gap.

5. The adjustable damping unit according to claim 4, characterized in that: The clamping spring-opening component includes a first spring plate and a second spring plate. The driving arm of the damping plate is clamped between the first spring plate and the second spring plate. The first spring plate abuts against the side of the driving arm of the positive damping plate away from the gap, and the second spring plate abuts against the side of the driving arm of the negative damping plate away from the gap.

6. The adjustable damping unit according to claim 3, characterized in that: The damping plate also includes a drive arm, with the drive arm and damping contact portion respectively located at both ends of the pivot portion. The drive arm extends away from the damping contact portion. The drive arm of the positive damping plate and the drive arm of the negative damping plate are arranged opposite to each other, forming a gap between the drive arm of the positive damping plate and the drive arm of the negative damping plate. The drive arm and damping contact portion of the same damping plate are located on both sides of the pivot portion, so that the clamping jaw expands when the gaping jaw expands. The pushing member has a V-shaped opening, and the two inclined surfaces of the V-shaped opening respectively constitute the first abutment portion and the second abutment portion. The drive arm of the damping plate is placed in the V-shaped opening, and the clamping jaw spring-opening member is arranged in the gaping jaw.

7. The adjustable damping unit according to claim 6, characterized in that: The clamping spring-opening component is a spring clamp with two outwardly expanding spring plates. The two spring plates of the spring clamp abut against the driving arm of the positive damping plate and the driving arm of the negative damping plate, respectively.

8. The adjustable damping unit according to claim 1, characterized in that: The positive damping plates and the negative damping plates are arranged in an alternating pattern.

9. The adjustable damping unit according to claim 1, characterized in that: The clamp has a radial fastening opening that is directly opposite the pivot and allows the shaft to enter and exit the clamp in the radial direction. The housing is provided with a fastening mounting part and a lateral clearance opening that corresponds to the radial fastening opening so that the radial fastening opening exposes the housing. Or / and the clamp has an axial port that, when expanded, allows the shaft to enter and exit the clamp in the axial direction. The housing is provided with a fastening mounting part and an axial clearance opening that corresponds to the axial port of the clamp so that the axial port of the clamp exposes the housing.

10. The adjustable damping unit according to claim 1, characterized in that: The damping contact part is arc-shaped, and the wall inside the clamp corresponding to the damping contact part is concave arc-shaped.

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