CN210344157U - Unidirectional rotation buffer damper - Google Patents
Unidirectional rotation buffer damper Download PDFInfo
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- CN210344157U CN210344157U CN201921353784.0U CN201921353784U CN210344157U CN 210344157 U CN210344157 U CN 210344157U CN 201921353784 U CN201921353784 U CN 201921353784U CN 210344157 U CN210344157 U CN 210344157U
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Abstract
The utility model discloses an unidirectional rotation buffering damper, including shell, end cover, damping axle and output shaft, first through-hole has been seted up to shell one end, the second through-hole has been seted up to the end cover, the end cover is fixed with the other end of shell, forms the inner chamber that there is the through-hole at both ends, damping axle one end is fixed with the end cover after deepening the second through-hole, be equipped with one-way bearing between damping axle and the output shaft, still locate damping axle outer lane and the rotation damping fin and the rotatory damping fin that splines that the mutual interval set up including the cover, the damping fin and the rotatory damping fin can move on the axial direction of damping axle of splines, be equipped with the regulating part in the first through-hole of shell, the regulating part outer lane is equipped with adjusting nut, adjusting nut one end offsets with the damping fin that splines, and adjusting nut can only axial displacement, pack damping grease in the inner. The utility model provides an unidirectional rotation buffering damper, compact structure, the damping force size is adjusted conveniently.
Description
Technical Field
The utility model relates to a attenuator technical field, specifically speaking relates to a unidirectional rotation buffering damper.
Background
The one-way damper only generates damping force when the rotating shaft moves along one direction, does not generate damping force when the rotating shaft moves along the other direction, and is widely applied to daily life of people.
The damping force of the existing adjustable rotary damper is generated by matching a rotating shaft with the circumferential surface of a fixed shaft, and the matching area is changed by adjusting the matching length of the rotating shaft and the fixed shaft through a tail screw, so that the friction force is adjusted, and the aim of adjusting the damping force is fulfilled. This kind of regulation mode needs the cooperation area of axis of rotation and fixed axle big enough, just can realize the purpose of adjusting, if the cooperation area of axis of rotation and fixed axle is little, and the regulation effect is not obvious, and if the cooperation area of axis of rotation and fixed axle is great, it is comparatively troublesome to adjust, and overall structure is great, is not suitable for the less exquisite product of mounting dimension.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an unidirectional rotation buffering damper, compact structure, the damping force size is adjusted conveniently.
The utility model discloses an one-way rotatory buffering damper adopts technical scheme is:
a unidirectional rotation buffering damper comprises a shell, an end cover, a damping shaft and an output shaft, wherein one end of the shell is provided with a first through hole, the end cover is provided with a second through hole, the end cover is fixed with the other end of the shell to form an inner cavity with through holes at two ends, one end of the damping shaft is fixed with the end cover after penetrating into the second through hole, a unidirectional bearing is arranged between the damping shaft and the output shaft and is connected with the damping shaft through the unidirectional bearing, the unidirectional rotation buffering damper also comprises a rotation stopping damping sheet and a rotation damping sheet which are sleeved on the outer ring of the damping shaft and are arranged at intervals, the rotation stopping damping sheet and the rotation damping sheet can move in the axial direction of the damping shaft, the rotation stopping damping sheet and the shell are relatively fixed in the circumferential direction, the rotation damping sheet and the damping shaft are relatively fixed in the circumferential direction, an adjusting piece is arranged in the first through hole of the shell, the adjusting part outer lane is equipped with adjusting nut, adjusting part and adjusting nut pass through threaded connection, adjusting nut one end offsets with the damping fin that splines, and adjusting nut can only axial displacement, the inner chamber is filled with damping grease.
Preferably, the inner side end of the adjusting piece is provided with an extending shaft, the damping shaft is provided with a blind hole, and the extending shaft of the adjusting piece extends into the blind hole and abuts against the damping shaft.
Preferably, a stepped boss is arranged at one end of the damping shaft, and the stepped boss penetrates into the second through hole and then is fixed with the end cover.
Preferably, a first sealing ring is arranged between the end cover and the shell, a second sealing ring is arranged between the stepped boss of the damping shaft and the end cover, and a third sealing ring is arranged between the adjusting piece and the shell.
As a preferred scheme, a plurality of rotation stopping damping fins are arranged between the adjusting nut and the stepped boss, and rotary damping fins are arranged between the rotation stopping damping fins.
According to the preferable scheme, the corresponding positions of the side surfaces of the rotary damping fin and the rotation stopping damping fin are provided with a placing groove, a waveform elastic sheet is arranged in the placing groove, and flat gaskets are placed on two sides of the placing groove.
Preferably, the outer ring of the damping shaft is provided with a first key groove along the axial direction, a first flat key is arranged at a position corresponding to the rotary damping fin, and the rotary damping fin and the damping shaft are clamped through the first flat key and the first key groove.
Preferably, the inner side of the shell is provided with a second key slot, the rotation-stopping damping fin is provided with a second flat key at a position corresponding to the outer ring, and the rotation-stopping damping fin and the shell are clamped through the second flat key and the second key slot.
Preferably, the adjusting nut outer ring is provided with a third flat key matched with the second key groove at a corresponding position, and the adjusting nut and the shell are clamped through the third flat key and the second key groove.
The utility model discloses an unidirectional rotation buffering damper's beneficial effect is: the damping shaft drives the rotary damping fin to rotate when rotating, relative rotation is formed between the rotary damping fin and the rotation stopping damping fin, grease between the rotary damping fin and the rotation stopping damping fin is driven to move, and friction force and pulling force generated among grease molecules block the rotation of the rotary damping fin to form stopping force. The smaller the gap between the rotary damping fin and the rotation stopping damping fin is, the larger the damping force is, and the larger the gap between the rotary damping fin and the rotation stopping damping fin is, the smaller the damping force is. The adjusting nut is enabled to generate axial displacement through rotating the adjusting piece, and in the process of axial movement of the adjusting nut, the gap between the rotary damping fin and the rotation stopping damping fin is enabled to change, so that the damping force is enabled to change, the rotating speed of the damping shaft is adjusted, and the rotating speed of the output shaft matched with the damping shaft is adjusted. The structure is more compact by adjusting the clearance between the rotary damping fin and the rotation stopping damping fin, so that the whole size is reduced.
Drawings
Fig. 1 is a first schematic view of the unidirectional rotation damping device of the present invention.
Fig. 2 is a second schematic view of the unidirectional rotation buffering damper of the present invention.
Fig. 3 is a schematic view of the damping shaft and the rotary damping plate of the unidirectional rotary buffer damper of the present invention.
Fig. 4 is a schematic view showing the cooperation between the housing and the rotation stop damping fin of the unidirectional rotation buffering damper of the present invention.
Detailed Description
The invention will be further elucidated and described with reference to the following embodiments and drawings in which:
referring to fig. 1 and 2, fig. 1 is a schematic view showing a case where a gap between the rotary damper 50 and the rotation stop damper 60 is large, and fig. 2 is a schematic view showing a case where a gap between the rotary damper 50 and the rotation stop damper 60 is small. A unidirectional rotation buffering damper comprises a shell 10, an end cover 20, a damping shaft 30, an output shaft 40, a rotation stopping damping fin 60 and a rotation damping fin 50, wherein the rotation stopping damping fin 60 and the rotation damping fin 50 are sleeved on the outer ring of the damping shaft 30 and are arranged at intervals.
First through-hole has been seted up to shell 10 one end, and the second through-hole has been seted up to end cover 20, and end cover 20 is fixed with the other end of shell 10, forms the inner chamber that has the through-hole at both ends, and damping axle 30 one end is equipped with ladder boss 31, and ladder boss 31 is fixed with end cover 20 after deepening the second through-hole, is equipped with one-way bearing 90 between damping axle 30 and the output shaft 40 to connect through one-way bearing 90. The rotation of the damping shaft 30 is linked with the output shaft 40 through the one-way bearing 90, and when the output shaft 40 is reversely rotated through the one-way bearing 90, the damping shaft 30 does not work, thereby performing a one-way damping function.
Referring to fig. 3 and 4 again, the outer ring of the damping shaft 30 is provided with a first key groove 32 along the axial direction, the corresponding position of the rotary damping fin 50 is provided with a first flat key 53, the rotary damping fin 50 and the damping shaft 30 are clamped by the first flat key 53 and the first key groove 32, and the rotary damping fin 50 and the damping shaft 30 are relatively fixed in the circumferential direction. The inner side of the housing 10 is provided with a second key groove, the rotation-stopping damping fin 60 is provided with a second flat key 61 at a position corresponding to the outer ring, the rotation-stopping damping fin 60 and the housing 10 are clamped through the second flat key 61 and the second key groove, and the rotation-stopping damping fin 60 and the housing 10 are relatively fixed in the circumferential direction. The rotation stop damper 60 and the rotation damper 50 are movable in the axial direction of the damper shaft 30. During the rotation of the damping shaft 30, the rotary damping fin 50 rotates with the damping shaft 30, and the rotation stop damping fin 60 and the housing 10 are fixed in the circumferential direction, so that the rotary damping fin 50 and the rotation stop damping fin 60 generate relative rotation in the circumferential direction.
Referring to fig. 1 and 4, an adjusting member 70 is disposed in the first through hole of the housing 10, an extending shaft is disposed at an inner end of the adjusting member 70, the damping shaft 30 is disposed with a blind hole, and the extending shaft of the adjusting member 70 extends into the blind hole and abuts against the damping shaft 30. Adjusting nut 80 is arranged on the outer ring of adjusting part 70, adjusting part 70 and adjusting nut 80 are in threaded connection, one end of adjusting nut 80 is abutted to rotation stopping damping fin 60, third flat key 81 matched with the second key groove is arranged at the corresponding position of the outer ring of adjusting nut 80, adjusting nut 80 and shell 10 are clamped through third flat key 81 and the second key groove, adjusting nut 80 can only move axially, a hexagonal inner hole is formed in the outer side of adjusting part 70, adjusting part 70 is rotated through a hexagonal wrench, adjusting nut 80 is adjusted in the axial position of damping shaft 30 through threads after rotation, and therefore the position between rotation stopping damping fin 60 and rotary damping fin 50 is adjusted.
A plurality of rotation stopping damping sheets 60 are arranged between the adjusting nut 80 and the stepped boss 31, and the rotary damping sheets 50 are arranged between the rotation stopping damping sheets 60. The side corresponding position of rotary damping fin 50 and spline damping fin 60 has seted up the standing groove, is equipped with wave form shell fragment 51 in the standing groove, and flat gasket 52 has been placed to the standing groove both sides, plays the resilience effect through wave form shell fragment 51 to make and remain certain clearance throughout between spline damping fin 60 and the rotary damping fin 50. Meanwhile, a placing groove is also formed between the rotation stopping damping sheet 60 closest to the stepped boss 31 and the stepped boss 31 of the damping shaft 30, the corrugated elastic sheet 51 is placed in the placing groove, and the flat gaskets 52 are placed on two sides of the placing groove.
A first sealing ring 11 is arranged between the end cover 20 and the shell 10, a second sealing ring 12 is arranged between the stepped boss 31 of the damping shaft 30 and the end cover 20, and a third sealing ring 13 is arranged between the adjusting piece 70 and the shell 10, so that the inner cavity is kept in a closed state, damping grease is filled in the inner cavity, and the damping grease plays a role of a damping medium.
In the above scheme, the damping shaft 30 drives the rotary damping fin 50 to rotate when rotating, relative rotation is formed between the rotary damping fin 50 and the rotation stopping damping fin 60, grease between the rotary damping fin 50 and the rotation stopping damping fin 60 is driven to move, and friction force and pulling force generated between grease molecules hinder the rotation of the rotary damping fin 50 to form stopping force. The smaller the gap between the rotary damper piece 50 and the rotation stop damper piece 60 is, the larger the damping force is, and the larger the gap between the rotary damper piece 50 and the rotation stop damper piece 60 is, the smaller the damping force is. By rotating the adjusting member 70, the adjusting nut 80 is axially displaced, and in the process of axial movement of the adjusting nut 80, the gap between the rotary damper 50 and the rotation stop damper 60 is changed, so that the damping force is changed, and the rotational speed of the damping shaft 30 is adjusted, thereby adjusting the rotational speed of the output shaft 40 engaged with the damping shaft 30. By adjusting the gap between the rotation damper 50 and the rotation stop damper 60, the structure is more compact, and the overall size is reduced.
It should be finally noted that the above embodiments are only intended to illustrate the technical solutions of the present invention, and not to limit the scope of the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present invention can be modified or replaced with equivalents without departing from the spirit and scope of the technical solutions of the present invention.
Claims (9)
1. A unidirectional rotation buffer damper comprises a shell, an end cover, a damping shaft and an output shaft, wherein one end of the shell is provided with a first through hole, the end cover is provided with a second through hole, the end cover is fixed with the other end of the shell to form an inner cavity with through holes at two ends, one end of the damping shaft is fixed with the end cover after penetrating into the second through hole, a unidirectional bearing is arranged between the damping shaft and the output shaft and is connected with the damping shaft through the unidirectional bearing,
the damping shaft further comprises a rotation stopping damping fin and a rotating damping fin which are sleeved on the outer ring of the damping shaft and are arranged at intervals, the rotation stopping damping fin and the rotating damping fin can move in the axial direction of the damping shaft, the rotation stopping damping fin and the shell are relatively fixed in the circumferential direction, the rotating damping fin and the damping shaft are relatively fixed in the circumferential direction,
an adjusting piece is arranged in the first through hole of the shell, one end of the adjusting piece is abutted against the damping shaft, an adjusting nut is arranged on the outer ring of the adjusting piece, the adjusting piece is connected with the adjusting nut through threads, one end of the adjusting nut is abutted against the rotation stopping damping sheet, the adjusting nut can only axially move,
and damping grease is filled in the inner cavity.
2. The unidirectional rotation buffering damper as claimed in claim 1, wherein the adjusting member has an inner end formed with an extending shaft, the damping shaft has a blind hole, and the extending shaft of the adjusting member extends into the blind hole and abuts against the damping shaft.
3. A unidirectional rotation damping damper as claimed in claim 1 wherein the damping shaft is provided at one end thereof with a stepped boss which is fixed to the end cap after penetrating into the second through hole.
4. A unidirectional rotation cushion damper as claimed in claim 3, wherein a first seal ring is provided between the end cap and the housing, a second seal ring is provided between the stepped boss of the damping shaft and the end cap, and a third seal ring is provided between the adjuster and the housing.
5. A unidirectional rotation damping buffer as claimed in claim 3 wherein a plurality of anti-rotation damping plates are provided between the adjusting nut and the stepped boss, and a rotary damping plate is provided between the anti-rotation damping plates.
6. The unidirectional rotation buffering damper of claim 5, wherein the rotary damping fin and the rotation stopping damping fin are provided with a placing groove at corresponding positions on the side surfaces, the placing groove is internally provided with a wave-shaped elastic sheet, and flat gaskets are placed on two sides of the placing groove.
7. The unidirectional rotation buffer damper as claimed in any one of claims 1 to 6, wherein the outer ring of the damping shaft is provided with a first key slot along the axial direction, the rotary damping fin is provided with a first flat key at a corresponding position, and the rotary damping fin and the damping shaft are clamped by the first flat key and the first key slot.
8. The unidirectional rotation buffer damper of any one of claims 1 to 6, wherein the inner side of the housing is provided with a second key slot, the rotation-stopping damper plate is provided with a second flat key at a position corresponding to the outer ring, and the rotation-stopping damper plate and the housing are clamped by the second flat key and the second key slot.
9. The unidirectional rotation buffer damper of claim 8, wherein the adjusting nut is provided with a third flat key at a corresponding position on the outer ring thereof, the third flat key being engaged with the second key groove, and the adjusting nut and the housing are locked by the third flat key and the second key groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921353784.0U CN210344157U (en) | 2019-08-20 | 2019-08-20 | Unidirectional rotation buffer damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921353784.0U CN210344157U (en) | 2019-08-20 | 2019-08-20 | Unidirectional rotation buffer damper |
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| Publication Number | Publication Date |
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| CN210344157U true CN210344157U (en) | 2020-04-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921353784.0U Active CN210344157U (en) | 2019-08-20 | 2019-08-20 | Unidirectional rotation buffer damper |
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| CN (1) | CN210344157U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112623103A (en) * | 2020-12-17 | 2021-04-09 | 兰溪智行云运动科技有限公司 | Friction-free constant damping chain shifter for bicycle |
-
2019
- 2019-08-20 CN CN201921353784.0U patent/CN210344157U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112623103A (en) * | 2020-12-17 | 2021-04-09 | 兰溪智行云运动科技有限公司 | Friction-free constant damping chain shifter for bicycle |
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