CN109488152B - Rotary damper and electric putter ware - Google Patents
Rotary damper and electric putter ware Download PDFInfo
- Publication number
- CN109488152B CN109488152B CN201910019681.9A CN201910019681A CN109488152B CN 109488152 B CN109488152 B CN 109488152B CN 201910019681 A CN201910019681 A CN 201910019681A CN 109488152 B CN109488152 B CN 109488152B
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- CN
- China
- Prior art keywords
- guide sleeve
- pressure distribution
- distribution ring
- rotary damper
- pressure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 230000009467 reduction Effects 0.000 claims description 20
- 125000006850 spacer group Chemical group 0.000 claims description 8
- 229920006231 aramid fiber Polymers 0.000 claims description 4
- 239000003292 glue Substances 0.000 claims description 3
- 238000013016 damping Methods 0.000 abstract description 19
- 238000013017 mechanical damping Methods 0.000 abstract description 5
- 230000007547 defect Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 13
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05F15/00—Power-operated mechanisms for wings
- E05F15/60—Power-operated mechanisms for wings using electrical actuators
- E05F15/603—Power-operated mechanisms for wings using electrical actuators using rotary electromotors
- E05F15/611—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for swinging wings
- E05F15/616—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for swinging wings operated by push-pull mechanisms
- E05F15/622—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for swinging wings operated by push-pull mechanisms using screw-and-nut mechanisms
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
- E05Y2201/00—Constructional elements; Accessories therefor
- E05Y2201/20—Brakes; Disengaging means; Holders; Stops; Valves; Accessories therefor
- E05Y2201/21—Brakes
- E05Y2201/212—Buffers
Landscapes
- Vibration Dampers (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The invention belongs to the technical field of automobiles, and particularly relates to a rotary damper and an electric pushrod device. The present invention provides a rotary damper, comprising: the device comprises an outer shell, an inner shell, a fixed seat, a guide sleeve, a plurality of radial pressure pieces and a pressure distribution ring; the pressure distribution ring is sleeved on the outer wall of the guide sleeve; the guide sleeve sleeved with the pressure distribution ring is arranged in the center of the inner shell through a plurality of radial pressure pieces, the radial pressure pieces are uniformly arranged on the periphery of the guide sleeve sleeved with the pressure distribution ring, wherein the first end of each radial pressure piece is connected with the outer wall of the pressure distribution ring, and the second end of each radial pressure piece is connected with the inner wall of the inner shell, so that the radial pressure pieces apply radial pressure to the guide sleeve through the pressure distribution ring; the inner shell is fixed inside the outer shell; the inner wall of the guide sleeve is provided with a limit structure; the fixing base is connected with the first end of the outer shell. The invention solves the technical defect of low damping efficiency of the existing mechanical damping of axially applied pressure.
Description
Technical Field
The invention belongs to the technical field of automobiles, and particularly relates to a rotary damper and an electric pushrod device.
Background
At present, some electric tail gate stay bars of automobiles on the market still adopt traditional structures, and the resistance of the stay bars mainly comes from the rotating friction force of a motor reduction gearbox and parts, and the friction force often cannot resist the weight of the tail gate, so that the phenomenon that the tail gate falls down in the running process can occur, and some electric tail gate stay bars can not even realize hovering, so that the same electric tail gate stay bars are required to be installed on two sides of the tail gate to solve the problems. At present, electric stay bars in the market are roughly divided into two types, namely a single-rod electric stay bar and a double-rod electric stay bar, wherein the single-rod electric stay bar has the advantages of low cost, poor overall effect, unstable operation and shaking of a tail door in an instant closing stage. The double-rod electric stay rod has good operation effect, but has higher cost.
Still other electric struts provide damping using a relatively conventional mechanical damper that uses a structure that applies axial pressure to generate friction, but conventional mechanical damping with axial pressure is costly and inefficient.
Disclosure of Invention
In view of the above, the invention discloses a rotary damper and an electric putter device, which can effectively solve the technical defect of low damping efficiency of the mechanical damping of the axial applied pressure at present.
The invention provides a rotary damper and an electric putter device, comprising: the device comprises an outer shell, an inner shell, a fixed seat, a guide sleeve, a plurality of radial pressure pieces and a pressure distribution ring;
the pressure distribution ring is sleeved on the outer wall of the guide sleeve;
the guide sleeve sleeved with the pressure distribution ring is arranged in the center of the inner shell through a plurality of radial pressure pieces, and the radial pressure pieces are uniformly arranged on the periphery of the guide sleeve sleeved with the pressure distribution ring, wherein the first ends of the radial pressure pieces are connected with the outer wall of the pressure distribution ring, and the second ends of the radial pressure pieces are connected with the inner wall of the inner shell, so that the radial pressure pieces apply radial pressure to the guide sleeve through the pressure distribution ring;
the inner shell is fixed inside the outer shell;
a limiting structure is arranged on the inner wall of the guide sleeve;
the fixing seat is connected with the first end of the outer shell.
Preferably, the radial pressure member is specifically a spring plate.
Preferably, the number of the radial pressure pieces is specifically 4, and the radial pressure pieces are symmetrically and uniformly arranged on the periphery of the guide sleeve sleeved with the pressure distribution ring.
Preferably, the pressure distribution ring is specifically a four-petal pressure distribution sheet, so that the four-petal pressure distribution sheet is uniformly sleeved on the outer wall of the guide sleeve.
Preferably, the limiting structure is specifically provided with splines along the radial direction of the pipe wall of the guide sleeve.
Preferably, the rotary damper further comprises a guide sleeve spacer layer, wherein the pressure distribution ring is sleeved on the outer wall of the guide sleeve, and particularly the pressure distribution ring is sleeved on the outer wall of the guide sleeve through the guide sleeve spacer layer.
Preferably, the guide sleeve spacer layer is made of aramid fiber.
Preferably, the rotary damper of the present invention further includes a vibration-proof rubber, and the inner housing is fixed inside the outer housing through the vibration-proof rubber.
The invention also provides an electric pusher, which comprises the rotary damper, a motor, a screw and a pusher;
the guide sleeve of the rotary damper is sleeved outside the output shaft of the motor and is connected with the screw rod;
the nut of the screw rod is connected with the push rod, so that the nut drives the push rod to perform telescopic movement.
Preferably, the electric putter device of the present invention further includes a reduction gearbox, wherein a first end of the reduction gearbox is connected with the motor;
the second end of the reduction gearbox is connected with the rotary damper;
an output shaft of the motor is connected with a worm of the reduction gearbox;
the worm of the reduction gearbox is connected with the screw rod through the rotary damper.
From the above technical scheme, the invention has the following advantages:
according to the rotary damper, the radial pressure pieces are uniformly arranged on the periphery of the guide sleeve sleeved with the pressure distribution ring, so that the radial pressure pieces apply radial pressure to the guide sleeve through the pressure distribution ring, the principle that friction is generated by radially applying pressure is utilized, the radial force application of the pressure distribution ring is adopted to enlarge the receiving area, the efficiency of selecting the damper is improved, and the rotary damper can adjust the area of the pressure distribution ring and/or adjust the quantity and the materials of the radial pressure pieces according to the damping effect, so that the damping effect of the rotary damper is increased or reduced. Therefore, compared with the traditional damper with axial pressure, the rotary damper has larger friction stress area under the condition of the same volume due to the fact that the pressure distribution ring is sleeved on the guide sleeve, the rotary damper has higher rotary damping efficiency, the length of the radial damper can be made shorter, the length can be shortened under the condition of meeting damping requirements, and the applicability of the rotary damper is improved.
In addition, the invention also discloses an electric putter device, the rotary damper provided by the invention is added in the electric putter device, the rotary damper applies damping to the screw rod of the electric putter device, the falling phenomenon of the tail gate is prevented, the tail gate has better hovering effect, and the performance of the electric putter is optimized. Therefore, the electric putter device provided by the invention has the advantages that the existing mechanical damping for applying axial pressure is not needed, the cost of the electric putter device can be reduced, and the market competitiveness is improved; the electric putter device of the invention has simple structure and is easy to assemble; the rotary damper provided by the invention has high damping efficiency, so that when the electric putter device is used for an automobile electric tail gate, the hovering of the automobile tail gate can be realized, and meanwhile, the volume of the rotary damper can be reduced because the damping efficiency of the rotary damper is high, thereby reducing the volume of the electric putter device and improving the universality of the electric putter device.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below.
FIG. 1 is a first perspective interior top view of a rotary damper provided by the present invention;
FIG. 2 is a second perspective interior top view of a rotary damper provided by the present invention;
FIG. 3 is an interior side view of a rotary damper provided by the present invention;
FIG. 4 is a block diagram of a fixing base of a rotary damper according to the present invention;
FIG. 5 is an exterior elevation view of a rotary damper provided by the present invention;
FIG. 6 is an overall elevation view of a rotary damper provided by the present invention;
FIG. 7 is a block diagram of an electric putter in accordance with the present invention;
wherein, the reference numerals, outer casing 1, inner casing 2, fixing base 3, guide pin bushing 4, radial pressure spare 5, pressure distribution ring 6, spline 7, guide pin bushing spacer layer 8, shockproof glue 9, the output shaft 10 of motor, the first end A of radial pressure spare of motor, the second end B of radial pressure spare, the first end C of outer casing, motor D, reducing gear box E, rotary damper F, screw rod G.
Detailed Description
The invention discloses a rotary damper and an electric putter device, which can effectively solve the technical defect of low damping efficiency of mechanical damping of axial pressure application at present.
The following description of the technical solutions in the embodiments of the present invention will be clear and complete, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The present invention provides a specific embodiment, referring to fig. 1 to 7, embodiment 1 includes: the device comprises an outer shell 1, an inner shell 2, a fixed seat 3, a guide sleeve 4, a plurality of radial pressure pieces 5 and a pressure distribution ring 6; the pressure distribution ring 6 is sleeved on the outer wall of the guide sleeve 4;
the guide sleeve 4 sleeved with the pressure distribution ring 6 is arranged in the center of the inner shell through a plurality of radial pressure pieces 5, the radial pressure pieces 5 are uniformly arranged on the periphery of the guide sleeve 4 sleeved with the pressure distribution ring 6, wherein the first end A of each radial pressure piece is connected with the outer wall of the pressure distribution ring 6, and the second end B of each radial pressure piece is connected with the inner wall of the inner shell 2, so that the radial pressure pieces 5 apply radial pressure to the guide sleeve 4 through the pressure distribution ring 6; the inner shell 2 is fixed inside the outer shell 1; the inner wall of the guide sleeve 4 is provided with a limit structure; the fixing base 3 is connected with the first end C of the outer shell.
Therefore, when the embodiment 1 is used, the limiting structure of the inner wall of the guide sleeve 4 is fixedly connected with the output shaft of the motor, the output shaft of the motor drives the guide sleeve 4 to rotate, the pressure distribution ring 6 is sleeved on the outer wall of the guide sleeve 4, the radial pressure pieces 5 apply radial pressure to the guide sleeve 4 through the pressure distribution ring 6, the radial pressure further acts on the output shaft of the motor, and a damping effect is generated on the output shaft of the motor.
The present invention provides another embodiment, referring to fig. 1 to 7, example 2 includes: the device comprises an outer shell 1, an inner shell 2, a fixed seat 3, a guide sleeve 4, a plurality of radial pressure pieces 5 and a pressure distribution ring 6; the pressure distribution ring 6 is sleeved on the outer wall of the guide sleeve 4;
the guide sleeve 4 sleeved with the pressure distribution ring 6 is arranged in the center of the inner shell through a plurality of radial pressure pieces 5, the radial pressure pieces 5 are uniformly arranged on the periphery of the guide sleeve 4 sleeved with the pressure distribution ring 6, wherein the first end A of each radial pressure piece is connected with the outer wall of the pressure distribution ring 6, and the second end B of each radial pressure piece is connected with the inner wall of the inner shell 2, so that the radial pressure pieces 5 apply radial pressure to the guide sleeve 4 through the pressure distribution ring 6; the inner shell 2 is fixed inside the outer shell 1; the inner wall of the guide sleeve 4 is provided with a limit structure; the fixing base 3 is connected with the first end C of the outer shell.
Specifically, the radial pressure member 5 is specifically a spring piece, which can generate radial elastic force on the guide sleeve 4, because the spring piece can generate radial pressure on the guide sleeve 4 through elastic deformation.
In order to generate a uniform damping effect, the output shaft of the motor is subjected to uniform radial pressure, in particular, the number of the radial pressure pieces is 4, and the radial pressure pieces are symmetrically and uniformly arranged on the periphery of the guide sleeve 4 sleeved with the pressure distribution ring 6.
As shown in fig. 1, in order to uniformly distribute the radial pressure generated by the radial pressure member on the guide sleeve, the pressure distribution ring 6 is specifically a four-flap pressure distribution sheet, so that the four-flap pressure distribution sheet is uniformly sleeved on the outer wall of the guide sleeve 4. The pressure distribution ring 6 is a split pressure distribution piece, divided into four halves, 6-1, 6-2, 6-3 and 6-4 respectively, and the outer wall of the pressure distribution ring 6 on each half is connected with the first end A of the radial pressure member, so that the radial pressure member can provide the maximum radial pressure. Specifically, the first end A of the radial pressure piece is connected with the outer wall of the four-petal pressure distribution piece, the second end B of the radial pressure piece is connected with the inner wall of the inner shell 2, and the four-petal pressure distribution piece can be uniformly distributed on the guide sleeve 4 after receiving radial pressure, so that the damping effect is uniform, and the condition that the output shaft of the motor is eccentric due to the non-uniformity of the damping effect can be avoided.
Specifically, in order to make the rotary damper of this embodiment can be with the output shaft fixed connection of motor, rotary damper's limit structure is equipped with spline 7 along the radial of the pipe wall of guide pin bushing specifically, spline 7 and the spline shape phase-match of the output shaft of motor for rotary damper's guide pin bushing 4 and the output shaft fixed connection of motor, the output shaft of motor drives the guide pin bushing and rotates, and the inner shell 2 of this embodiment, a plurality of radial pressure spare 5 and pressure distribution ring 6 do not take place the rotation, radial pressure spare 5 and pressure distribution ring 6 produce damping effect to the motor output shaft of rotation, and the radial spline 7 that is equipped with of the pipe wall of guide pin bushing 4 increases the contact area of the guide pin bushing 4 of rotary damper and the output shaft of motor, can be better with radial pressure effect to the output shaft of motor take place damping effect.
Further, in order to prolong the service life of the rotary damper of the present invention, the embodiment further includes a guide sleeve spacer layer 8, the pressure distribution ring 6 is sleeved on the outer wall of the guide sleeve 4, and specifically, the pressure distribution ring 6 is sleeved on the outer wall of the guide sleeve 4 through the guide sleeve spacer layer 8. Specifically, the guide sleeve spacer layer 8 is made of aramid fiber, and the aramid fiber has excellent friction resistance, so that abrasion of the pressure distribution ring when radial pressure is applied to the guide sleeve is avoided.
Further, the rotary damper of the present embodiment further includes a vibration-proof rubber, and the inner housing 2 is fixed inside the outer housing 1 through the vibration-proof rubber 9. Because the outer shell 1 and the inner shell 2 are in rigid connection, in order to avoid serious vibration between the outer shell 1 and the inner shell 2, the vibration-proof rubber 9 is arranged between the outer shell 1 and the inner shell 2, the vibration-proof rubber 9 with small vibration resistance is added, noise caused by vibration can be reduced, and meanwhile, the phenomenon that the rotary damper is eccentric can be avoided.
In order to enable the electric putter to be more balanced, stable and even in running speed when the tail gate is opened or closed, the tail gate can hover at any position without falling through resistance generated by the rotary damper when the electric putter suddenly stops working in the running process. The embodiment of the invention also provides an electric pushrod device which comprises the rotary damper F, the motor D, the screw G and the pushrod H; the output shaft of the motor D is connected with the screw rod G through the rotary damper F, and the nut of the screw rod G is connected with the push rod H, so that the nut drives the push rod H to perform telescopic motion. The fixing seat of the rotary damper F is connected with the motor in a limiting mode, and in addition, the fixing seat of the rotary damper F is connected with the motor in a laser welding mode.
Specifically, the guide sleeve of the rotary damper F is sleeved on the output shaft of the motor D and is further connected with the screw rod G.
In order to enable the electric putter to generate better hovering effect, the electric putter of the embodiment further comprises a reduction gearbox E, wherein a first end of the reduction gearbox E is connected with a motor D; the second end of the reduction gearbox E is connected with the rotary damper F; an output shaft of the motor D is connected with a worm of the reduction gearbox E; the worm of the reduction gearbox E is connected with a screw rod G through a rotary damper F. The reduction gearbox E can adjust the rotation action of the output shaft of the motor D, so that the rotary damper F of the present embodiment better generates a damping action.
An output shaft of the motor D is connected with the reduction gearbox E, and a spline of the screw rod G penetrates through a spline 7 of the rotary damper F to be connected with a spline of the reduction gearbox E in a key mode. The whole rotation process is as follows: the motor D rotates to drive the screw rod G to rotate after being decelerated by the reduction gearbox E, and the screw rod G rotates to pass through the nut of the screw rod G, so that the push rod H is pushed to move. Wherein the rotary damper F is connected to the screw G to give a damping moment to the screw.
The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention.
Claims (7)
1. A rotary damper, comprising: the device comprises an outer shell, an inner shell, a fixed seat, a guide sleeve, a plurality of radial pressure pieces, a pressure distribution ring and a guide sleeve spacer layer;
the pressure distribution ring is sleeved on the outer wall of the guide sleeve;
the guide sleeve sleeved with the pressure distribution ring is arranged in the center of the inner shell through a plurality of radial pressure pieces, and the radial pressure pieces are uniformly arranged on the periphery of the guide sleeve sleeved with the pressure distribution ring, wherein the first ends of the radial pressure pieces are connected with the outer wall of the pressure distribution ring, and the second ends of the radial pressure pieces are connected with the inner wall of the inner shell, so that the radial pressure pieces apply radial pressure to the guide sleeve through the pressure distribution ring;
the inner shell is fixed inside the outer shell;
a limiting structure is arranged on the inner wall of the guide sleeve;
the fixed seat is connected with the first end of the outer shell;
the radial pressure piece is specifically a spring piece;
the pressure distribution ring is sleeved on the outer wall of the guide sleeve, specifically the pressure distribution ring is sleeved on the outer wall of the guide sleeve through a guide sleeve spacing layer;
the guide sleeve spacing layer is made of aramid fiber.
2. The rotary damper according to claim 1, wherein the number of the radial pressure members is 4, and the radial pressure members are symmetrically and uniformly arranged on the periphery of the guide sleeve sleeved with the pressure distribution ring.
3. The rotary damper of claim 2, wherein the pressure distribution ring is embodied as four-lobed pressure distribution plates, such that the four-lobed pressure distribution plates are uniformly sleeved on the outer wall of the guide sleeve.
4. The rotary damper according to claim 1, wherein the limiting structure is specifically a spline arranged along the radial direction of the pipe wall of the guide sleeve.
5. The rotary damper of claim 1, further comprising a vibration-proof glue, wherein the inner housing is secured inside the outer housing by the vibration-proof glue.
6. An electric putter comprising a rotary damper as claimed in any one of claims 1 to 5, a motor, a screw and a putter;
an output shaft of the motor is connected with the screw rod through the rotary damper;
the nut of the screw rod is connected with the push rod, so that the nut drives the push rod to perform telescopic movement.
7. The electric putter as set forth in claim 6 further including a reduction gearbox, a first end of the reduction gearbox being connected to the motor;
the second end of the reduction gearbox is connected with the rotary damper;
an output shaft of the motor is connected with a worm of the reduction gearbox;
the screw rod is connected with the worm of the reduction gearbox through the rotary damper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910019681.9A CN109488152B (en) | 2019-01-09 | 2019-01-09 | Rotary damper and electric putter ware |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910019681.9A CN109488152B (en) | 2019-01-09 | 2019-01-09 | Rotary damper and electric putter ware |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109488152A CN109488152A (en) | 2019-03-19 |
| CN109488152B true CN109488152B (en) | 2024-02-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910019681.9A Active CN109488152B (en) | 2019-01-09 | 2019-01-09 | Rotary damper and electric putter ware |
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| Country | Link |
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| CN (1) | CN109488152B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113445843A (en) * | 2020-03-27 | 2021-09-28 | 太仓卡兰平汽车零部件有限公司 | Damping device |
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| CN208236202U (en) * | 2018-04-19 | 2018-12-14 | 昆山恒瑞诚工业科技有限公司 | A kind of two way damper of car boot portal bracing bar |
| CN109067082A (en) * | 2018-08-28 | 2018-12-21 | 常州登丰电气有限公司 | A kind of motor shaft deceleration mechanism |
| CN209670686U (en) * | 2019-01-09 | 2019-11-22 | 广东东箭汽车科技股份有限公司 | A kind of rotary damper and a kind of electric pushrod device |
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|---|---|
| CN109488152A (en) | 2019-03-19 |
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