CN215408069U

CN215408069U - Anti-pulling device of automobile tail compartment lifting structure

Info

Publication number: CN215408069U
Application number: CN202121258765.7U
Authority: CN
Inventors: 赖闳钧
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-06-07
Filing date: 2021-06-07
Publication date: 2022-01-04
Anticipated expiration: 2031-06-07

Abstract

The utility model discloses a pull-out prevention device of an automobile tail compartment lifting structure, and relates to the technical field of automobile accessories. The motor is fixed in the fixed shell, the screw is connected with an output shaft of the motor, the screw is in threaded connection with the threaded column, the outer rings of the screw and the threaded column are sleeved with the spring, the rolling bearing is fixed in the fixed shell at the output shaft end of the motor, the plug is sleeved on the screw and is arranged on one side of the rolling bearing far away from the motor, one end of the spring abuts against one side of the plug at the output end of the motor, and the other end of the spring is fixedly connected with the fastening nut and the threaded column at the top of the movable shell into a whole; still include the flat face bearing and prevent drawing the gasket, the flat face bearing fixed set up in fixed shell near motor output shaft one end, be equipped with between flat face bearing and antifriction bearing and prevent drawing the gasket, the diameter of preventing drawing the gasket is approximately equal to antifriction bearing's maximum external diameter.

Description

Anti-pulling device of automobile tail compartment lifting structure

Technical Field

The utility model relates to the technical field of automobile accessories, in particular to a pulling-out prevention device of an automobile trunk lifting structure.

Background

At present, with the improvement of living standard of people, cars for family use are widely popularized, the distance between cities is shortened, great convenience is brought to people, and the wide car trunk enables passengers to conveniently carry articles when going out.

The conventional automobile tail box is generally controlled in an electric mode. The structure of the device is shown in attached figures 1 and 2, a motor 1 fixed in a fixed shell 2 is started, the motor 1 drives a screw rod 3 to rotate, a threaded column 4 is connected to the screw rod 3 in a threaded manner, a spring 5 is sleeved on the outer rings of the screw rod 3 and the threaded column 4, one end of the spring 5 abuts against a plug 9 on one side of a rolling bearing 7 at the output end of the motor 1, the other end of the spring 5 is fixedly connected with a fastening nut and the threaded column at the top of a movable shell into a whole, the spring 5 is pre-tightened before the installation process, namely the spring 5 is always in a compressed state, the screw rod 3 rotates, so that the threaded column 4 moves up and down on the screw rod 3, the spring 5 is further compressed or loosened, and the external appearance is that the space between the fixed shell 2 and the movable shell 6 is extended or shortened, so that an automobile tail compartment cover is jacked up or closed on an automobile body. Because the screw 3 rotates frequently, a rolling bearing 7 for supporting the screw 3 is fixed at the output end of the motor 1. However, during use, it is often found that the inner ring of the rolling bearing 7 in the trunk elevator structure is pushed out of the outer ring to cause damage to the entire trunk elevator structure. The reason for this is that the inner ring of the rolling bearing 7 is subjected to a large axial force of the spring 5 for a long period of time, and if the balls between the inner ring and the outer ring of the rolling bearing 7 are slightly worn to generate a gap, the inner ring is easily pushed out from the outer ring to damage the entire rolling bearing 7.

Disclosure of Invention

The utility model aims to overcome the defects in the prior art and provides a pulling-out prevention device for a lifting structure of an automobile trunk.

The utility model is realized by the following technical scheme: a pull-out preventing device of an automobile tail compartment lifting structure comprises a motor, a fixed shell, a screw rod, a threaded column, a spring, a movable shell, a rolling bearing, a fastening nut and a plug, wherein the motor is fixed in the fixed shell, the screw rod is connected with an output shaft of the motor, the threaded column is in threaded connection with the screw rod, the spring is sleeved on outer rings of the screw rod and the threaded column, the rolling bearing is fixed in the fixed shell at the output shaft end of the motor, the plug is sleeved on the screw rod and is arranged on one side, away from the motor, of the rolling bearing, one end of the spring abuts against one side of the plug at the output end of the motor, and the other end of the spring is fixedly connected with the fastening nut and the threaded column at the top of the movable shell into a whole; still include the flat face bearing and prevent drawing the gasket, the flat face bearing fixed set up in fixed shell near motor output shaft one end, be equipped with between flat face bearing and antifriction bearing and prevent drawing the gasket, the diameter of preventing drawing the gasket is approximately equal to antifriction bearing's maximum external diameter.

The utility model adopts the combination of the plane bearing and the rolling bearing, and the anti-pull gasket is arranged between the plane bearing and the rolling bearing, so that the rolling bearing the axial force is reasonably balanced by the combination of the plane bearing and the anti-pull gasket, and the problem that the rolling bearing in the automobile tail compartment lifting structure is damaged due to the axial force is fundamentally solved.

Description of the drawings:

FIG. 1 is a cross-sectional view of the prior art;

FIG. 2 is an enlarged fragmentary view of FIG. 1;

FIG. 3 is a cross-sectional view of the present invention;

fig. 4 is a partially enlarged view of fig. 3.

The specific implementation mode is as follows:

referring to the attached drawings 3-4, the anti-pulling device of the automobile trunk lifting structure comprises a motor 1, a fixed shell 2, a screw rod 3, a threaded column 4, a spring 5, a movable shell 6, a rolling bearing 7, a fastening nut 8 and a metal gasket 9, wherein the motor 1 is fixed in the fixed shell 2, the screw rod 3 is connected with an output shaft of the motor 1, the threaded column 4 is connected with the screw rod 3 in a threaded manner, the spring 5 is sleeved on outer rings of the screw rod 3 and the threaded column 4, the rolling bearing 7 is fixed in the fixed shell 2 at the output shaft end of the motor 1, the metal gasket 9 is sleeved on the screw rod 3, one end of the spring 5 is respectively abutted against one side of the metal gasket 9 at the output end of the motor 1 on one side of the rolling bearing 7 far away from the motor 1, and the other end of the spring 5 is fixedly connected with the fastening nut 8 at the top of the movable shell 6 and the threaded column 4 into a whole; still include flat bearing 10 and prevent drawing gasket 11, flat bearing 10 fixed set up in fixed shell 2 near 1 output shaft one end of motor, be equipped with between flat bearing 10 and antifriction bearing 7 and prevent drawing gasket 11, the diameter of preventing drawing gasket 11 is approximately equal to antifriction bearing 7's maximum external diameter.

When the utility model is applied, the inner ring of the rolling bearing 7 bears the huge axial force of the spring 5 for a long time, but because the plane bearing 10 is arranged between the fixed shell 2 and the rolling bearing 7, and the pull-proof gasket 11 is arranged between the plane bearing 10 and the rolling bearing, all the axial force is borne by the plane bearing 10 through the pull-proof gasket 11, the huge axial force of the spring 5 borne by the inner ring of the rolling bearing 7 is greatly reduced, and the problem that the rolling bearing 7 in the automobile tail box lifting structure is damaged is fundamentally solved.

Claims

1. The utility model provides a car tail railway carriage or compartment elevation structure prevent pull-out device, which comprises a motor, fixed shell, the screw rod, the screw thread post, a spring, remove the shell, antifriction bearing, fastening nut and metal gasket, the motor is fixed in fixed shell, the output shaft of screw rod and motor, threaded connection is the screw thread post on the screw rod, the outer lane cover of screw rod and screw thread post is equipped with the spring, antifriction bearing fixes in the fixed shell of motor output shaft end, the metal gasket cover is on the screw rod, and in the antifriction bearing one side of keeping away from the motor, one end top of spring is supported the one side at the metal gasket of motor output end, the other end of spring links firmly as a whole with the fastening nut and the screw thread post that remove the shell top, its characterized in that: still include the flat face bearing and prevent drawing the gasket, the flat face bearing fixed set up in fixed shell near motor output shaft one end, be equipped with between flat face bearing and antifriction bearing and prevent drawing the gasket, the diameter of preventing drawing the gasket is approximately equal to antifriction bearing's maximum external diameter.