CN210769973U - Swing friction mechanism - Google Patents
Swing friction mechanism Download PDFInfo
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- CN210769973U CN210769973U CN201921689943.4U CN201921689943U CN210769973U CN 210769973 U CN210769973 U CN 210769973U CN 201921689943 U CN201921689943 U CN 201921689943U CN 210769973 U CN210769973 U CN 210769973U
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- friction
- support
- clutch blocks
- swing
- support arm
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Abstract
The utility model discloses a swing friction mechanism, including support and a plurality of clutch blocks, the support includes a plurality of spaced apart support arms, and is a plurality of the clutch blocks is installed respectively in a plurality of the outer end of support arm, the one end pin joint of clutch blocks in thereby the support arm can be relative the support arm swing, the one side of clutch blocks outwards is the friction surface. Compared with the prior art, the clutch blocks are the support arms of one end pin joint in the support among this swing friction mechanism, consequently the clutch blocks will receive centrifugal force effect and the outside swing of relative support arm when the support rotates, because be pin joint structure and current slip cup joint structure between clutch blocks and the support arm, consequently area of contact between clutch blocks and the support arm is little, frictional force is little between the two when the clutch blocks are thrown away, can effectively avoid the clutch blocks to appear by the condition that can not move about on the support arm, the reliability is higher.
Description
Technical Field
The utility model relates to a slowly fall technical field, especially relate to a swing friction mechanism.
Background
When disasters such as earthquakes and fires happen, people in a high-rise building cannot use the elevator to quickly reach the ground and can only go down through the stairs, but the escape speed of the people through the stairs is too low, so that the people cannot escape in time. Although people in high buildings can escape through aerial ladders or rescue air cushions with the help of fire rescue force, the fire rescue force cannot be always on site until the disaster deteriorates and endangers the personal safety, and the dead time of escape can be delayed if people wait for rescue blindly.
In order to enable people in a high-rise building to escape to the ground in time when a disaster occurs, some related escape devices have been developed, wherein the slow descent device has the strongest practicability. The descent control device comprises a rotating part wound with a steel wire rope and a friction mechanism arranged in the rotating part, wherein a transmission structure is arranged between the rotating part and the friction mechanism, the steel wire rope drives the rotating part to rotate by utilizing friction force when being taken out from the rotating part, the transmission structure enables the friction mechanism to rotate in a reverse direction with the rotating part, and the friction force is generated between the friction mechanism and the rotating part to limit the rotating speed of the rotating part.
As shown in fig. 1, the conventional friction mechanism includes a cross-shaped rotating bracket 91 and a friction block 93 slidably disposed on a supporting arm 92 of the rotating bracket 91, wherein when the rotating bracket 91 rotates, the friction block 93 is thrown outward by centrifugal force and contacts with an inner wall of the rotating member, so as to generate frictional resistance on the inner wall of the rotating member, thereby limiting the rotating speed of the rotating member. However, in this friction mechanism, the friction block 93 is linearly slidably connected to the support arm 92, the contact area between the two is large, the friction resistance is large, and once an error occurs during processing or assembling, the friction block 93 may be stuck to the support arm 92 and cannot be thrown away, thereby affecting the slow descending effect.
Therefore, in order to prevent the friction block from being stuck, a friction mechanism with a more reliable structure is needed.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a friction mechanism that the structure is more reliable.
In order to realize the above object, the utility model provides a swing friction mechanism, including support and a plurality of clutch blocks, the support includes a plurality of spaced apart support arms, and is a plurality of the clutch blocks are installed respectively in a plurality of the outer end of support arm, thereby the one end pin joint of clutch block in the support arm can be relative the support arm swing, the outside one side of clutch block is the friction surface.
Compared with the prior art, the clutch blocks are the support arms of one end pin joint in the support among this swing friction mechanism, consequently the clutch blocks will receive centrifugal force effect and the outside swing of relative support arm when the support rotates, because be pin joint structure and current slip cup joint structure between clutch blocks and the support arm, consequently area of contact between clutch blocks and the support arm is little, frictional force is little between the two when the clutch blocks are thrown away, can effectively avoid the clutch blocks to appear by the condition that can not move about on the support arm, the reliability is higher.
Preferably, the support has four support arms, and the swing friction mechanism includes four friction blocks, and the four friction blocks are respectively pivoted to the outer ends of the four support arms.
Preferably, the outer end of the supporting arm is bent towards one side to form a pivot joint part, and the friction block is pivoted to the pivot joint part.
Specifically, an accommodating area is formed between the pivoting part of the supporting arm and the other adjacent supporting arm, and the friction block can swing inwards relative to the supporting arm and be accommodated in the accommodating area.
Preferably, the friction block further comprises a main rotating shaft fixed in the center of the bracket, and the pivot axis of the friction block is parallel to the axial direction of the main rotating shaft.
Preferably, the friction block is provided with a positioning groove with two open ends on the friction surface in a concave manner.
Drawings
Fig. 1 is a perspective view of a conventional friction mechanism.
Fig. 2 is a perspective view of the swing friction mechanism of the present invention.
Fig. 3 is a perspective view of the friction block.
Detailed Description
The preferred embodiments of the present invention will be described below with reference to the accompanying drawings.
As shown in fig. 2 and 3, the utility model provides a swing friction mechanism, which can be arranged in a slow descending device, and can realize the purpose of limiting the rotating speed of a rotating member by the friction of the rotating member with the slow descending device. The swing friction mechanism comprises a support 1 and a plurality of friction blocks 2, the support 1 comprises a plurality of spaced support arms 11, and the friction blocks 2 are respectively arranged at the outer ends of the support arms 11. In this embodiment, the support 1 has four support arms 11, the number of the friction blocks 2 is also four, and the four friction blocks 2 are respectively pivoted to the outer ends of the four support arms 11.
The outer end of the supporting arm 11 is bent to one side to form a pivot part 12, a containing area 13 is formed between the pivot part 12 and the adjacent other supporting arm 11, one end of the friction block 2 is pivoted to the pivot part 12 so as to be capable of swinging relative to the supporting arm 11, and the friction block 2 is capable of being contained in the containing area 13 after swinging inward relative to the supporting arm 11. The pivot axis between the friction block 2 and the pivot 12 is perpendicular to the plane of the four support arms 11, so that the friction block 2 moves in the plane.
The outward surfaces of the friction blocks 2 are friction surfaces 20, the friction surfaces 20 are used for contacting with a rotating member to generate friction, the friction surfaces 20 are arc-shaped surfaces, and when the four friction blocks 2 are thrown out by centrifugal force, the outer friction surfaces 20 are positioned on the same circle. Preferably, the friction block 2 is further concavely provided with a positioning groove 21 with two open ends on the friction surface 20, and the positioning groove 21 is used for matching with a guide rail convexly arranged on the inner wall of the rotating member, so that the friction block 2 can only move along the circumferential direction of the rotating member without generating obvious swinging. One end of the friction block 2 is provided with two spaced butt joint parts 25, and the butt joint parts 25 are clamped at two sides of the pivot joint part 12 of the supporting arm 11 and then pivoted.
The swing friction mechanism further comprises a main rotating shaft 3 fixed in the center of the bracket 1, and the pivot axis of the friction block 2 is parallel to the axial direction of the main rotating shaft 3. The main shaft is mounted in the descent control device so that the support 1 can rotate.
Compared with the prior art, the clutch blocks 2 are the support arms 11 of one end pin joint in support 1 in this swing friction mechanism, consequently, clutch blocks 2 will receive centrifugal force effect and support arm 11 swing to the outside relatively when support 1 rotates, because be pin joint structure and current slip cup joint structure between clutch blocks 2 and the support arm 11, consequently, area of contact between clutch blocks 2 and the support arm 11 is little, frictional force is little between the two when clutch blocks 2 are thrown away, can effectively avoid clutch blocks 2 to appear by the condition that can not move about on support arm 11, the reliability is higher.
The above disclosure is only a preferred embodiment of the present invention, and the function is to facilitate the understanding and implementation of the present invention, which is not to be construed as limiting the scope of the present invention, and therefore, the present invention is not limited to the claims.
Claims (6)
1. An oscillating friction mechanism, characterized by: the support comprises a plurality of spaced support arms, the friction blocks are respectively arranged at the outer ends of the support arms, one ends of the friction blocks are pivoted to the support arms, so that the support arms can swing relative to the support arms, and the outward surfaces of the friction blocks are friction surfaces.
2. The oscillating friction mechanism as recited in claim 1 wherein: the support has four the support arm, swing friction mechanism includes four the clutch blocks, four the clutch blocks pin joint respectively in four the support arm outer end.
3. The oscillating friction mechanism as recited in claim 1 wherein: the outer end of the supporting arm is bent towards one side to form a pivoting part, and the friction block is pivoted to the pivoting part.
4. The oscillating friction mechanism as recited in claim 3 wherein: an accommodating area is formed between the pivoting part of the supporting arm and the other adjacent supporting arm, and the friction block can swing inwards relative to the supporting arm and be accommodated in the accommodating area.
5. The oscillating friction mechanism as recited in claim 1 wherein: the friction block is characterized by further comprising a main rotating shaft fixed in the center of the support, and the pivot axis of the friction block is parallel to the axial direction of the main rotating shaft.
6. The oscillating friction mechanism as recited in claim 1 wherein: the friction block is provided with a positioning groove with two open ends in a concave manner on the friction surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921689943.4U CN210769973U (en) | 2019-10-09 | 2019-10-09 | Swing friction mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921689943.4U CN210769973U (en) | 2019-10-09 | 2019-10-09 | Swing friction mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210769973U true CN210769973U (en) | 2020-06-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921689943.4U Active CN210769973U (en) | 2019-10-09 | 2019-10-09 | Swing friction mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210769973U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116006613A (en) * | 2023-01-13 | 2023-04-25 | 哈尔滨工业大学（深圳） | A Centrifugal Booster Rotary Friction Damper |
-
2019
- 2019-10-09 CN CN201921689943.4U patent/CN210769973U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116006613A (en) * | 2023-01-13 | 2023-04-25 | 哈尔滨工业大学（深圳） | A Centrifugal Booster Rotary Friction Damper |
| CN116006613B (en) * | 2023-01-13 | 2023-09-12 | 哈尔滨工业大学（深圳） | Centrifugal force-increasing rotary friction damper |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210429 Address after: 518000 Room 201, building a, Desheng building, district 23, Dalang community, Xin'an street, Bao'an District, Shenzhen City, Guangdong Province Patentee after: Building ark Co.,Ltd. Address before: 523000 Chen Fung Road 15, Chen Cun, Humen Town, Dongguan, Guangdong. Patentee before: FUPANY ENTERPRISE Co.,Ltd. |
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| TR01 | Transfer of patent right |