CN218206325U

CN218206325U - Electric stay bar for automobile back door

Info

Publication number: CN218206325U
Application number: CN202221834225.3U
Authority: CN
Inventors: 沈涛; 盛延根; 席艳秋; 刘智慧; 李广
Original assignee: Chery Automobile Co Ltd
Current assignee: Chery Automobile Co Ltd
Priority date: 2022-06-28
Filing date: 2022-06-28
Publication date: 2023-01-03
Anticipated expiration: 2032-06-28

Abstract

The utility model relates to an electronic vaulting pole of car back door, including coaxial outer tube and the interior sleeve pipe that cup joints, be provided with the motor in the outer tube, the output shaft of motor is coaxial to be fixed with the lead screw, the cover is equipped with nut slider and constitutes screw-nut mechanism on the lead screw, motor drive lead screw rotates and drives the nut slider linear motion that links to each other with interior sleeve pipe and promote interior sleeve pipe displacement, the periphery cover of lead screw is equipped with the spring, the spring provides elasticity and orders about interior sleeve pipe shrink to the outer tube pipe intracavity, the pad is equipped with the metal gasket between the tip of spring and nut slider and/or interior sleeve pipe tip. Because the friction force of the contact end face of the metal gasket and the flocking spring is large, and the friction force of the end face of the metal gasket in contact with the inner sleeve is small, in the opening and closing process of the electric back door, the flocking spring generates torsion force, the torsion force passes through the metal gasket and drives the metal gasket and the inner sleeve to rotate relatively to release the torsion force of the flocking spring, and a ball socket and a ball pin which are connected with the inner sleeve automatically recover the relative angle to the installation state after interference occurs.

Description

Electric stay bar for automobile back door

Technical Field

The utility model relates to a car back door vaulting pole technical field, concretely relates to car back door electric stay.

Background

The electric back door of the automobile realizes the opening and closing functions of the back door through the telescopic motion of the support rods on the left side and the right side. The support rods on the two sides are parts which are respectively arranged on a vehicle body flume (an upper mounting point) and connected with a back door inner plate (a lower mounting point) through an upper support assembly and a lower support assembly in a mode of combining an electric support rod and a balance rod or combining the electric support rod and the electric support rod, and the opening (or closing) function of the back door of the automobile is realized under the driving thrust of a motor. A flocking mechanical spring is arranged in the electric stay bar, two end faces of the flocking mechanical spring are respectively contacted with a stay bar middle sleeve and a guide pipe, and a lower ball socket of the stay bar generates periodic small-angle rotation around the axis of the stay bar in the opening and closing movement process of the back door. Because the two ends of the flocking mechanical spring are in contact with the middle sleeve and the guide pipe (the middle sleeve and the guide pipe are made of plastic, and the friction between the plastic and flocking is large) and the friction is large, the flocking mechanical spring forms torsion around the axis of the stay bar inside the stay bar, so that the relative angle alpha between the opening axis of the upper ball socket and the opening axis of the lower ball socket of the stay bar is changed, and the simultaneous interference between the lower ball socket and the lower ball pin and between the upper ball socket and the upper ball pin is easily generated in the opening and closing process of the electric back door to generate friction abnormal sound. In addition, because the cost of the electric stay bar is more than ten times of that of the manual air stay bar, most host factories flatly use the electric stay bar to achieve the aim of saving development cost, when the electric stay bar leaves a factory from a manufacturer, the relative angle alpha of the opening axis of the upper ball socket and the opening axis of the lower ball socket is fixed, different vehicle types need to use the lower ball socket to rotate a certain angle beta around the axis of the stay bar to match a mounting point on a vehicle body during total assembly, at the moment, the installation state of a flocking mechanical spring generates torsion and cannot be released, and the interference between the stay bar ball socket and a bracket ball pin is more easily generated in the opening and closing process of the electric back door to generate friction abnormal sound.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a can release the automobile back door electric stay pole of flocking spring opening the torsion that produces in the closing motion process.

In order to realize the purpose, the utility model discloses a technical scheme be: the utility model provides an electronic vaulting pole of car back door, outer tube and interior sleeve pipe including coaxial the cup jointing, be provided with the motor in the outer tube, the output shaft coaxial fixation of motor has the lead screw, the cover is equipped with the nut slider and constitutes feed screw nut mechanism on the lead screw, motor drive lead screw rotates and drives the nut slider linear motion that links to each other with interior sleeve pipe and promote interior sleeve pipe displacement, the periphery cover of lead screw is equipped with the spring, the one end of spring offsets with interior sheathed tube tip, the other end offsets with the nut slider, the spring provides elasticity and orders about interior sleeve pipe shrink to outer tube lumen, the pad is equipped with the metal gasket between the tip of spring and nut slider and/or interior sleeve pipe tip.

The end part of the spring is padded with a metal gasket, one end face of the metal gasket is contacted with the flocking spring, the other end face of the metal gasket is contacted with the plastic inner sleeve and the plastic outer sleeve, after the outer sleeve and the inner sleeve are installed, the flocking spring is compressed in the axial direction of the inner sleeve to generate elastic force, and the elastic force enables the metal gasket to be axially fixed in the inner sleeve. Because the friction force of the contact end face of the metal gasket and the flocking spring is large, and the friction force of the end face of the metal gasket in contact with the inner sleeve is small, in the opening and closing process of the electric back door, the flocking spring generates torsion which passes through the metal gasket and drives the metal gasket and the inner sleeve to rotate relatively to release the torsion of the flocking spring, so that a ball socket and a ball pin which are connected with the inner sleeve automatically recover relative angles to an installation state after interference occurs, and friction abnormal sound generated by the interference of the ball socket and the ball pin is eliminated.

Drawings

FIG. 1 is a schematic view of the overall structure of an electric stay bar;

fig. 2 is a partially enlarged schematic view of fig. 1.

Detailed Description

The utility model provides an electronic vaulting pole of car back door, outer tube 10 and interior sleeve pipe 20 including coaxial cup joint, be provided with motor 31 in the outer tube 10, the coaxial lead screw 32 that is fixed with of output shaft of motor 31, the cover is equipped with nut slider 33 on the lead screw 32 and constitutes feed screw nut mechanism, motor 31 drive lead screw 32 rotates and drives the nut slider 33 linear motion that links to each other with interior sleeve pipe 20 and promote interior sleeve pipe 20 displacement, the periphery cover of lead screw 32 is equipped with spring 34, the one end of spring 34 offsets with the tip of interior sleeve pipe 20, the other end offsets with nut slider 33, spring 34 provides elasticity and orders about interior sleeve pipe 20 shrink to outer tube 10 intracavity, the pad is equipped with metal gasket 40 between the tip of spring 34 and nut slider 33 and/or interior sleeve pipe 20 tip. The end of the spring 34 is padded with a metal gasket 40, one end face of the metal gasket 40 is in contact with the spring 34, and the other end face of the metal gasket 40 is in contact with the end face of the nut slider 33 and/or the inner sleeve 20 (three schemes are included here, scheme 1 is that the metal gasket 40 is only arranged one, namely, between the nut slider 33 and the spring 34, scheme 2 is that the metal gasket 40 is arranged only one, namely, between the inner sleeve 20 and the spring 34, and scheme 3 is that the metal gasket 40 is arranged 2, namely, at two end positions of the spring 34), after the outer sleeve 10 and the inner sleeve 20 are installed, the spring 34 is compressed in the axial direction of the inner sleeve 20 to generate elastic force, and the elastic force enables the metal gasket 40 to be axially fixed in the inner sleeve 20. Because the friction force of the contact end face of the metal gasket 40 and the spring 34 is large, and the friction force of the end face of the metal gasket 40 in contact with the inner sleeve 20 is small, in the opening and closing process of the electric back door, the spring 34 generates torsion which passes through the metal gasket 40 and drives the metal gasket 40 and the inner sleeve 20 to relatively rotate so as to release the torsion of the spring 34, so that the ball socket and the ball pin connected with the inner sleeve 20 automatically recover to the installation state after interference occurs, and friction abnormal sound generated by the interference of the ball socket and the ball pin is eliminated.

Multiple tests prove that the effects of arranging the metal gaskets 40 at both ends of the spring and arranging the metal gaskets 40 at only one end are not very different, so that for cost reasons, the metal gaskets 40 are arranged between the end part of the spring 34 and the end part of the inner sleeve 20, namely scheme 2.

The lead screw 32 protrudes into the lumen of the inner sleeve 20, the guide tube 35 is sleeved between the lead screw 32 and the spring 34, the outer diameter of the guide tube 35 is matched with the inner diameter of the spring 34 to form guide sliding fit, the spring 34 is ensured to be compressed or extended along the axis all the time, the stability of linear motion of the inner sleeve 20 is ensured on one hand, the possibility of collision between the spring 34 and other parts is reduced on the other hand, the end part of the guide tube 35 close to the nut slider 33 is provided with an external flange 351, and two side plate surfaces of the external flange 351 are respectively abutted to the end parts of the nut slider 33 and the spring 34.

The spring 34 may collide with other components during the compression process, so flocking is provided on the outer circumference of the spring 34 to reduce the abnormal noise of collision.

Furthermore, a first end cover 50 is arranged at the end part of the outer sleeve 10, a first ball pin 51 is fixed on the first end cover 50, the first ball pin 51 and a first ball socket at the position of a vehicle body water flowing groove form a spin rivet connection, a second end cover 60 is arranged at the end part of the inner sleeve 20, a second ball pin 61 is fixed on the second end cover 60, and the second ball pin 61 and a second ball socket on a back door form a spin rivet connection. Thereby realize that the back door can both carry out reliable, stable support to it all the time at the rotation in-process.

The outer sleeve 10 and the inner sleeve 20 are both made of plastic material. The friction force between the flocked spring 34 and the metal gasket 40 is greater than the friction force between the metal gasket 40 and the plastic inner sleeve 20, so that the metal gasket 40 and the plastic inner sleeve 20 are more easily rotated, and by utilizing the characteristic, in the opening and closing process of the electric back door, the flocking spring 34 generates torsion force, the metal gasket 40 is driven by the torsion force to relatively rotate with the inner sleeve 20 so as to release the torsion force of the flocking spring 34, and the ball socket and the ball pin connected with the inner sleeve 20 automatically recover the relative angle to the installation state after interference occurs, so that the friction abnormal sound generated by the interference of the ball socket and the ball pin is eliminated.

Claims

1. The utility model provides an electronic vaulting pole of car back door, outer tube (10) and interior sleeve pipe (20) including coaxial cup joint, be provided with motor (31) in outer tube (10), the coaxial lead screw (32) that is fixed with of output shaft of motor (31), the cover is equipped with nut slider (33) and constitutes screw-nut mechanism on lead screw (32), motor (31) drive lead screw (32) rotate drive with interior sleeve pipe (20) link to each other nut slider (33) linear motion and promote interior sleeve pipe (20) displacement, the periphery cover of lead screw (32) is equipped with spring (34), the one end of spring (34) offsets with the tip of interior sleeve pipe (20), the other end offsets with nut slider (33), spring (34) provide elasticity and order about interior sleeve pipe (20) shrink to outer tube (10) intracavity, its characterized in that: and a metal gasket (40) is cushioned between the end part of the spring (34) and the end part of the nut sliding block (33) and/or the inner sleeve (20).

2. The electric stay of the back door of the automobile as set forth in claim 1, wherein: a metal washer (40) is disposed between the end of the spring (34) and the end of the inner sleeve (20).

3. The electric stay bar for a back door of an automobile according to claim 1, wherein: the lead screw (32) protrudes into the tube cavity of the inner sleeve (20), a guide tube (35) is sleeved between the lead screw (32) and the spring (34), the outer diameter of the guide tube (35) is matched with the inner diameter of the spring (34) to form guide sliding fit, an external flanging (351) is arranged at the end part of the guide tube (35) close to the nut sliding block (33), and the two side plate surfaces of the external flanging (351) are respectively abutted to the end parts of the nut sliding block (33) and the spring (34).

4. The electric stay bar for a back door of an automobile according to claim 1, wherein: flocking is arranged on the periphery of the spring (34).

5. The electric stay bar for a back door of an automobile according to claim 1, wherein: the end part of the outer sleeve (10) is provided with a first end cover (50), a first ball pin (51) is fixed on the first end cover (50), the first ball pin (51) and a first ball socket at a vehicle body water flowing groove form spin rivet connection, the end part of the inner sleeve (20) is provided with a second end cover (60), a second ball pin (61) is fixed on the second end cover (60), and the second ball pin (61) and a second ball socket on a back door form spin rivet connection.

6. The electric stay bar for a back door of an automobile according to claim 5, wherein: the outer sleeve (10) and the inner sleeve (20) are made of plastic materials.