CN215804011U

CN215804011U - Commutator-like friction damper

Info

Publication number: CN215804011U
Application number: CN202121946003.6U
Authority: CN
Inventors: 胡小龙; 张保国
Original assignee: Anhui Jiahui Intelligent Automobile Technology Co ltd
Current assignee: Anhui Jiahui Intelligent Automobile Technology Co ltd
Priority date: 2021-08-18
Filing date: 2021-08-18
Publication date: 2022-02-11
Anticipated expiration: 2031-08-18

Abstract

The utility model discloses a friction damper similar to a commutator, which comprises a connector, wherein a connecting ball socket is arranged in the connector, the right side of the connector is connected with an inner sleeve, the periphery of the inner sleeve is connected with an outer sleeve, the right end of the inner sleeve is connected with a screw nut, the inside of the screw nut is connected with a telescopic screw rod, the left end of the telescopic screw rod is connected with a limit nut, the right end of the telescopic screw rod is connected with a rotating disc, the periphery of the rotating disc is provided with a planet ring, the right side of the planet ring is provided with a motor shaft, and the periphery of the motor shaft is provided with a shaft sleeve. This similar commutator friction damper increases a similar commutator friction damper device back on electronic vaulting pole motor, and electronic vaulting pole motor is when the beginning motion, and the attenuator produces effective frictional force, and the carbon brush material has wear-resisting and quiet characteristics, and whole structure is stable noiselessness when moving to improve the comfort level that the user used electronic tail-gate greatly.

Description

Commutator-like friction damper

Technical Field

The utility model relates to the technical field of automobiles, in particular to a friction damper similar to a commutator.

Background

In the automobile market, the electric stay bar of the tail gate of the automobile is widely used all the time, along with the requirements of people on the functional convenience of the automobile, the technology is more and more mature, the competition of the automobile type is accelerated, the electric tail gate is not limited to top vehicle types used for various vehicle enterprises, a plurality of vehicle factories apply the electric tail gate to more vehicle types, the automatic tail gate of the automobile becomes a popular trend, the electric tail gate drives the tail gate to be linearly stretched by the electric stay bar to drive the tail gate to realize the automatic opening and closing function of the tail gate, the tail gate has the function of highly freely setting in the operation process, the function requires that the tail gate can be hovered at any position in the opening and closing process, the weight of the tail gate and a spring inside the stay bar can hardly reach the mechanical balance of any angle, therefore, the hovering needs to realize the hovering, the internal resistance which can counteract the gravity and the unbalanced spring force is provided inside the stay bar, thereby realizing the hovering of the tail gate, however, the dampers on the market at present still have the following problems:

1. in order to ensure that the traditional strut of the automobile tail gate can hover at any angle, a damper with a large friction coefficient is arranged at the tail part of the screw rod, so that the screw rod is under the action of friction force, and the electric tail gate generates large noise due to the friction of the damper at the tail end of the screw rod in the opening and closing process, so that a vehicle owner has poor experience when using the electric tail gate;

2. traditional car tail-gate's vaulting pole is when manufacturing, in order to set up damping structure in the vaulting pole, need adjust the holistic exterior structure of vaulting pole to let the attenuator can place in the lead screw bottom, and open and close at the tail-gate and come and go the in-process and can operate more steadily in order to guarantee the vaulting pole, can stop at journey within range optional position according to the user's requirement, the requirement of assembly product to inside motor can be very high.

Aiming at the problems, the novel design is carried out on the original damper.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a friction damper similar to a commutator, which solves the problems that the traditional stay bar of the automobile tail gate proposed by the background technology can hover at any angle, the friction coefficient of the damper is larger at the tail part of a screw rod, the screw rod is acted by friction force, the electric tail gate generates larger noise in the opening and closing process due to the friction of the damper at the tail end of the screw rod, so that a vehicle owner has poor experience when using the electric tail gate, the stay bar of the traditional automobile tail gate needs to be adjusted in order to be provided with a damping structure in the stay bar during production and manufacturing, so that the damper can be placed at the bottom end of the screw rod, the stay bar can run more stably in the opening and closing process of the tail gate, and the stay bar can stay at any position in a travel range according to the requirements of users, the requirement of the assembly product for the internal motor can be high.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a similar commutator friction damper, includes the connector, connector inside has seted up the connection ball socket, and the connector right side is connected with interior sleeve pipe, interior sleeve pipe periphery is connected with the outer tube, and interior sleeve pipe right-hand member is connected with screw-nut, screw-nut internal connection has telescopic screw, and the telescopic screw left end is connected with limit nut to telescopic screw right-hand member is connected with the rolling disc, the rolling disc periphery is provided with the planet ring, and the right side of planet ring is provided with the motor shaft, the periphery of motor shaft is provided with the axle sleeve, and one side of axle sleeve is provided with the carbon brush, one side of carbon brush is provided with the attenuator base, and attenuator base one side is provided with the plastics lid.

Preferably, the connector is fixedly connected with the inner sleeve, the inner sleeve is connected with the outer sleeve in a sliding mode, the inner sleeve and the outer sleeve are coaxially arranged, the connecting ball socket is arranged in a spherical mode, the inner surface of the connecting ball socket is smooth, and the connecting ball socket is fixedly connected with the connector.

Preferably, screw-nut and interior sleeve pipe adopt interference fit's connected mode, and screw-nut and telescopic screw threaded connection to interior sleeve pipe passes through screw-nut and telescopic screw constitutes screw thread pushing structure, telescopic screw and limit nut threaded connection, and limit nut internal thread and telescopic screw surface screw thread revolve to opposite, and the limit nut diameter is greater than telescopic screw diameter.

Preferably, the rotating disc is fixedly connected with the connecting shaft, the rotating shaft of the rotating disc and the rotating shaft of the telescopic screw rod are coaxially arranged, the rotating disc and the planet ring form a rotating structure, the rotating disc is rotatably connected with the planet wheel, and the planet ring is fixedly connected with the running motor through bolts.

Preferably, the planet ring and the gear ring are integrally arranged, the gear ring is meshed with the planet wheels, the planet wheels are arranged in the gear ring in an annular matrix manner, the planet wheels are meshed with the sun wheel, the planet wheel surrounding shaft and the sun wheel rotating shaft are coaxially arranged, and the sun wheel is fixedly connected with the motor shaft.

Preferably, the motor shaft and the shaft seat form a rotating structure, the motor shaft and the shaft sleeve are in interference fit connection, the shaft sleeve is in sliding connection with a carbon brush, the carbon brush is arranged in the damper base in an annular matrix mode, the carbon brush is in sliding connection with the damper base, the carbon brush and the pressure spring form a spring resetting structure, the damper base is fixedly connected with the running motor, and the damper base is fixedly connected with the plastic cover.

Compared with the prior art, the utility model has the beneficial effects that: the commutator-like friction damper is a friction damper,

1. after the friction damper device similar to the commutator is added on the electric stay bar motor, when the electric stay bar motor starts to move, the damper generates effective friction force, the carbon brush material has the characteristics of wear resistance and silence, and the whole structure is stable and noiseless when in operation, so that the comfort level of a user using the electric tail gate is greatly improved;

2. the damper mechanism device is simple and compact in structure, the main body structure of the stay bar is not required to be changed, convenience and practicability are achieved, the motor stay bar can be guaranteed to be more stable and reliable in the process of opening and closing to and fro, and the structure can effectively reduce the manufacturing cost.

Drawings

FIG. 1 is a schematic view of the overall front cross-sectional structure of the present invention;

FIG. 2 is an enlarged view of the structure at A in FIG. 1 according to the present invention;

FIG. 3 is an enlarged view of the structure at B in FIG. 1 according to the present invention;

FIG. 4 is a schematic left-side sectional view showing a connection between a carbon brush and a compression spring according to the present invention;

FIG. 5 is a schematic view of a left-side cross-sectional structure of the connection between the planet gear and the sun gear of the present invention;

fig. 6 is a schematic view of the overall three-dimensional structure of the present invention.

In the figure: 1. a connector; 2. connecting the ball socket; 3. an inner sleeve; 4. an outer sleeve; 5. a limit nut; 6. a telescopic screw rod; 7. a feed screw nut; 8. rotating the disc; 9. a planet ring; 10. a sun gear; 11. operating the motor; 12. a motor shaft; 13. a shaft seat; 14. a planet wheel; 15. a connecting shaft; 16. a ring gear; 17. a shaft sleeve; 18. a carbon brush; 19. a pressure spring; 20. a damper base; 21. and (4) a plastic cover.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-6, the present invention provides a technical solution: a friction damper similar to a commutator comprises a connector 1, in order to enable an electric tail gate to run smoothly, a connecting ball socket 2 is arranged inside the connector 1, the right side of the connector 1 is connected with an inner sleeve 3, the periphery of the inner sleeve 3 is connected with an outer sleeve 4, the right end of the inner sleeve 3 is connected with a screw nut 7, the inner part of the screw nut 7 is connected with a telescopic screw 6, the left end of the telescopic screw 6 is connected with a limit nut 5, the right end of the telescopic screw 6 is connected with a rotating disc 8, the connector 1 is fixedly connected with the inner sleeve 3, the inner sleeve 3 is connected with the outer sleeve 4 in a sliding manner, the inner sleeve 3 and the outer sleeve 4 are coaxially arranged, the connecting ball socket 2 is in a ball-shaped arrangement, the inner surface of the connecting ball socket 2 is smooth, the connecting ball socket 2 is fixedly connected with the connector 1, the screw nut 7 and the inner sleeve 3 are in an interference fit connection manner, and the screw nut 7 is in threaded connection with the telescopic screw 6, and interior sleeve pipe 3 passes through screw-nut 7 and flexible lead screw 6 constitution screw thread promotion structure,

flexible lead screw

6 and 5 threaded connection of limit nut, and 5 internal threads of limit nut and the 6 surperficial screw threads of flexible lead screw revolve to opposite, and the 5 diameters of limit nut are greater than flexible lead screw 6 diameters, utilize flexible lead screw 6 to make interior sleeve pipe 3 and outer tube 4 slide level and smooth, thereby make it drive when the tail-gate moves in the same direction as smooth, can not appear and pause and feel.

Referring to fig. 1-6, in order to prevent the electric tailgate from generating a large noise during operation, a planet ring 9 is disposed on the periphery of a rotating disc 8, a motor shaft 12 is disposed on the right side of the planet ring 9, a shaft sleeve 17 is disposed on the periphery of the motor shaft 12, a carbon brush 18 is disposed on one side of the shaft sleeve 17, a damper base 20 is disposed on one side of the carbon brush 18, a plastic cover 21 is disposed on one side of the damper base 20, the rotating disc 8 is fixedly connected with a connecting shaft 15, a rotating shaft of the rotating disc 8 is coaxially disposed with a rotating shaft of a telescopic screw 6, the rotating disc 8 and the planet ring 9 form a rotating structure, the rotating disc 8 is rotatably connected with planet wheels 14, the planet ring 9 is fixedly connected with an operating motor 11 by bolts, the planet ring 9 and a ring gear 16 are integrally disposed, the ring gear 16 is engaged with the planet wheels 14, and the planet wheels 14 are disposed in an annular matrix in the ring gear 16, planet wheel 14 is connected with sun gear 10 meshing, and planet wheel 14 encircles the coaxial setting of axle and sun gear 10 rotation axis, and sun gear 10 and motor shaft 12 fixed connection, motor shaft 12 constitutes revolution mechanic with axle bed 13, and motor shaft 12 adopts interference fit's connected mode with axle bed 17, and axle bed 17 and carbon brush 18 sliding connection, carbon brush 18 is annular matrix setting in damper base 20, and carbon brush 18 and damper base 20 sliding connection, and carbon brush 18 constitutes the spring reset structure with pressure spring 19, damper base 20 and operation motor 11 fixed connection, and damper base 20 and plastic cover 21 fixed connection, setting through carbon brush 18, make the frictional noise obtain very big reduction, can not have huge noise when making electronic tail gate use again.

The working principle is as follows: according to fig. 1-6, the device is firstly installed, the device is connected to the tail gate of the vehicle through the connecting ball socket 2 on the connecting head 1 at one end, and the connecting ball socket 2 on the connecting head 1 at the other end is connected to the carriage of the vehicle, so that the installation of the device is completed, when the electric tail gate is opened and closed, the operating motor 11 is started, the output torque of the operating motor 11 is acted on the motor shaft 12, meanwhile, the pressure spring 19 in the damper base 20 fixed through the plastic cover 21 is pressed on the shaft sleeve 17 through the carbon brush 18 to generate pressure, so that the motor shaft 12 is subjected to certain damping force, when the torque acted on the motor shaft 12 by the operating motor 11 is larger than the damping force received by the motor shaft 12, the motor shaft 12 is rotated to drive the sun gear 10, so that the sun gear 10 is rotated, and because the sun gear 10 is meshed with the planet gear 14, the planet gears 14 are enabled to rotate on the gear ring 16, due to the matrix arrangement of the planet gears 14, the connecting shaft 15 is rotationally connected with the planet gears 14, and the connecting shaft 15 is fixedly arranged with the rotating disc 8, so that the rotating disc 8 connected with the connecting shaft rotates in the planet ring 9 and drives the telescopic lead screw 6 to rotate, along with the rotation of the telescopic lead screw 6, the lead screw nut 7 in threaded connection with the telescopic lead screw moves on the telescopic lead screw 6, due to the fact that the lead screw nut 7 is fixedly connected with the inner sleeve 3, the inner sleeve 3 is driven to slide in the outer sleeve 4, when the lead screw nut 7 moves to the top end of the telescopic lead screw 6, the lead screw nut 7 is blocked by the limiting nut 5 at the moment, the lead screw nut 7 is prevented from falling off from the telescopic lead screw 6, and due to the fact that the inner sleeve 3 slides on the outer sleeve 4, the length of the whole stay bar is lengthened, the automobile tail gate is opened, and the automatic opening and closing of the automobile tail gate are achieved.

According to fig. 1-6, when the tail gate needs to be suspended after being opened, the operation motor 11 is powered off, the gravity of the tail gate makes the screw nut 7 push the telescopic screw 6, so as to convert the gravity of the tail gate into the rotating force of the telescopic screw 6, so that the telescopic screw 6 is acted by the rotating torque, as the telescopic screw 6 is connected to the rotating disc 8, the rotating torque is transmitted to the planet wheel 14 through the connecting shaft 15, and the torque is transmitted to the motor shaft 12 by using the sun wheel 10, at this time, the motor shaft 12 has a rotating trend on the shaft base 13, as the motor shaft 12 is connected with the shaft sleeve 17, and the shaft sleeve 17 is subjected to the friction force from the carbon brush 18, so as to make the shaft sleeve 17 subjected to the damping force, so that the motor shaft 12 is subjected to the damping force, as the tooth ratio of the sun wheel 10 and the planet wheel 14 reduces the rotating torque, so that the damping force is larger than the rotating torque, therefore, the motor shaft 12 will not rotate, and the telescopic lead screw 6 cannot rotate, at this time, the telescopic lead screw 6 is still stationary, and hovering of the tail gate is ensured, and at this time, the content not described in detail in this specification belongs to the prior art known to those skilled in the art.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the utility model can be made, and equivalents and modifications of some features of the utility model can be made without departing from the spirit and scope of the utility model.

Claims

1. The utility model provides a similar commutator friction damper, includes connector (1), its characterized in that: a connecting ball socket (2) is arranged in the connector (1), an inner sleeve (3) is connected to the right side of the connector (1), an outer sleeve (4) is connected to the periphery of the inner sleeve (3), the right end of the inner sleeve (3) is connected with a screw rod nut (7), the inside of the screw rod nut (7) is connected with a telescopic screw rod (6), the left end of the telescopic screw rod (6) is connected with a limit nut (5), the right end of the telescopic screw rod (6) is connected with a rotating disc (8), a planet ring (9) is arranged on the periphery of the rotating disc (8), a motor shaft (12) is arranged on the right side of the planet ring (9), a shaft sleeve (17) is arranged on the periphery of the motor shaft (12), and one side of the shaft sleeve (17) is provided with a carbon brush (18), one side of the carbon brush (18) is provided with a damper base (20), and one side of the damper base (20) is provided with a plastic cover (21).

2. A commutator-like friction damper as claimed in claim 1, wherein: connector (1) and interior sleeve pipe (3) fixed connection, and interior sleeve pipe (3) and outer tube (4) sliding connection to interior sleeve pipe (3) and outer tube (4) coaxial setting, connect ball socket (2) and set up for the ball-type, and connect ball socket (2) internal surface smooth, and connect ball socket (2) and connector (1) fixed connection.

3. A commutator-like friction damper as claimed in claim 1, wherein: screw-nut (7) and interior sleeve pipe (3) adopt interference fit's connected mode, and screw-nut (7) and flexible lead screw (6) threaded connection to interior sleeve pipe (3) constitute screw thread pushing structure through screw-nut (7) and flexible lead screw (6), flexible lead screw (6) and spacing nut (5) threaded connection, and spacing nut (5) internal thread and flexible lead screw (6) surface screw thread revolve to opposite, and spacing nut (5) diameter is greater than flexible lead screw (6) diameter.

4. A commutator-like friction damper as claimed in claim 1, wherein: the rotating disc (8) is fixedly connected with the connecting shaft (15), a rotating shaft of the rotating disc (8) and a rotating shaft of the telescopic screw rod (6) are coaxially arranged, the rotating disc (8) and the planet ring (9) form a rotating structure, the rotating disc (8) is rotatably connected with the planet wheel (14), and the planet ring (9) is fixedly connected with the running motor (11) through bolts.

5. A commutator-like friction damper as claimed in claim 1, wherein: the planet ring (9) and the gear ring (16) are integrally arranged, the gear ring (16) is meshed with the planet wheels (14), the planet wheels (14) are arranged in the gear ring (16) in an annular matrix manner, the planet wheels (14) are meshed with the sun wheel (10), the planet wheels (14) are coaxially arranged around the rotating shaft of the sun wheel (10), and the sun wheel (10) is fixedly connected with the motor shaft (12).

6. A commutator-like friction damper as claimed in claim 1, wherein: motor shaft (12) and axle bed (13) constitute revolution mechanic, and motor shaft (12) and axle sleeve (17) adopt interference fit's connected mode to axle sleeve (17) and carbon brush (18) sliding connection, carbon brush (18) are the annular matrix setting in attenuator base (20), and carbon brush (18) and attenuator base (20) sliding connection to carbon brush (18) and pressure spring (19) constitute the spring and reset the structure, attenuator base (20) and operation motor (11) fixed connection, and attenuator base (20) and plastics lid (21) fixed connection.