CN210087096U

CN210087096U - Electric stay bar

Info

Publication number: CN210087096U
Application number: CN201920344379.6U
Authority: CN
Inventors: 廖文辉; 尹燕军; 王龙
Original assignee: Guangdong Dongjian Automobile Technology Co Ltd
Current assignee: Guangdong Dongjian Automobile Technology Co Ltd
Priority date: 2019-03-18
Filing date: 2019-03-18
Publication date: 2020-02-18
Anticipated expiration: 2029-03-18

Abstract

The utility model relates to an electronic vaulting pole, electronic vaulting pole includes: an outer guide tube inside which the inner guide tube is allowed to move in the axial direction; the sleeve is sleeved outside the outer conduit and is connected with the outer conduit; the sleeve is at least partially transparent to light, the outer guide tube is at least partially opaque to light, and the outer guide tube is laser-welded to the inner wall of the sleeve. Among the above-mentioned electronic vaulting pole, through the fixed outer pipe of sleeve pipe, fixed outer pipe provides spacing guide for the interior pipe that removes, avoids interior pipe rotation. In addition, the outer guide pipe and the sleeve are welded by laser to replace a pressure point process, so that the sleeve is not deformed under the action of external force, the concentricity of the sleeve and the coaxiality of the electric stay bar are improved, and the assembly precision of the electric stay bar is improved. Simultaneously, compare in pressure point technology, laser welding does not necessarily need to set up the sleeve pipe into the tubular metal resonator, has increased the variety of sleeve pipe material, for example can set up the sleeve pipe into plastic part to reduce the whole weight of electronic vaulting pole.

Description

Electric stay bar

Technical Field

The utility model relates to a vehicle manufacturing technical field especially relates to electronic vaulting pole.

Background

The electric stay bar is applied to the automobile tail door and used for automatically opening and closing the automobile tail door, and the convenience of automobile use is improved. The electric support rod comprises a driving piece, a screw rod, an outer guide pipe, an inner guide pipe and a sleeve, the outer guide pipe is fixedly arranged in the sleeve, the screw rod is driven by the driving piece to rotate, the inner guide pipe is driven to move along the axial direction of the outer guide pipe, and therefore the support rod is telescopic.

When the electric stay bar is assembled, an outer guide pipe is assembled in the sleeve pipe by generally adopting a pressure point process, pressure is applied to the sleeve pipe by pressure point equipment in the pressure point process, and the sleeve pipe is fixed after being deformed by the pressure. However, after the sleeve is deformed due to the external force, the concentricity of the sleeve itself is deteriorated, and the coaxiality of the electric stay bar cannot be ensured, which affects the assembly accuracy of the electric stay bar.

SUMMERY OF THE UTILITY MODEL

Therefore, it is necessary to provide an electric stay bar with high assembly accuracy for solving the problem that the assembly accuracy of the electric stay bar is affected by the point process.

An electrically powered brace, comprising:

an outer catheter within which the inner catheter is allowed to move in an axial direction;

the sleeve is sleeved outside the outer catheter and is connected with the outer catheter;

the sleeve is at least partially transparent to light, the outer guide tube is at least partially opaque to light, and the outer guide tube is laser-welded to the inner wall of the sleeve.

Among the above-mentioned electronic vaulting pole, through the fixed outer pipe of sleeve pipe, fixed outer pipe provides spacing guide for the interior pipe that removes, avoids interior pipe rotation. And the sleeve is at least transparent to the part connected with the outer conduit, the outer conduit is at least opaque to the part connected with the sleeve, and the outer conduit is laser-welded on the inner wall of the sleeve to realize the assembly of the outer conduit and the sleeve. Therefore, the outer guide pipe and the sleeve are welded by laser to replace a pressure point process, the sleeve is not deformed under the action of external force, the concentricity of the sleeve and the coaxiality of the electric stay bar are improved, and the assembly precision of the electric stay bar is improved. Simultaneously, compare in pressure point technology, laser welding does not necessarily need to set up the sleeve pipe into the tubular metal resonator, has increased the variety of sleeve pipe material, for example can set up the sleeve pipe into plastic part to reduce the whole weight of electronic vaulting pole.

In one embodiment, the sleeve is entirely light transmissive and the outer conduit is entirely light opaque.

In one embodiment, the outer guide pipe comprises a fixed seat and a main pipe body, wherein the fixed seat is arranged at one end of the main pipe body and is welded with the inner wall of the sleeve by laser.

In one embodiment, the holder has an interference fit with the sleeve.

In one embodiment, the outer diameter of the fixed seat is larger than the outer diameter of the main pipe body.

In one embodiment, a boss is convexly arranged on the inner wall of the sleeve, and the end part of the fixed seat close to the main pipe body is abutted with the boss along the axial direction of the sleeve.

In one embodiment, the waterproof device further comprises a waterproof rubber ring, wherein an installation groove with an opening is formed in the surface of the fixed seat, which is opposite to the end of the main pipe body, the waterproof rubber ring is arranged in the installation groove through the opening, and the waterproof rubber ring is positioned between the outer guide pipe and the bearing seat.

In one embodiment, the mounting structure further comprises a gasket, wherein the gasket abuts between the end part of the fixing seat, which faces away from the main pipe body, and the bearing seat and shields at least part of the opening of the mounting groove; the waterproof rubber ring is abutted between the gasket and the bottom wall of the mounting groove along the axial direction of the outer guide pipe.

In one embodiment, a limiting member is arranged on a surface of the fixed seat, which faces away from the end of the main pipe body, and forms a preset installation position, and the gasket is radially limited and assembled at the preset installation position.

In one embodiment, the limiting member includes a plurality of limiting portions, the limiting portions are distributed at intervals along the circumferential direction of the mounting seat, at least two limiting portions are oppositely arranged along the radial direction of the mounting seat to form the preset mounting position, and the gasket is clamped between the limiting portions.

Drawings

Fig. 1 is a schematic structural view of an electric stay bar according to an embodiment of the present invention;

fig. 2 is an enlarged view of a portion of the electric stay of fig. 1;

FIG. 3 is a cross-sectional view of the assembly of the outer conduit and the spacer in the motorized brace of FIG. 1;

fig. 4 is a schematic structural view illustrating an assembly of an outer guide tube and a spacer in the electric stay of fig. 1.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

As shown in fig. 1-2, in one embodiment of the present invention, an electric brace 100 is provided. The electric support rod 100 comprises a motor 10, a screw rod 20, an inner guide pipe 30, an outer guide pipe 40 and a sleeve 60, wherein the motor 10 and the outer guide pipe 40 are arranged in the sleeve 60 along the axial direction of the sleeve 60, the motor 10 is connected with the screw rod 20, the inner guide pipe 30 is in threaded fit with the screw rod 20, the inner guide pipe 30 is driven by the screw rod 20 to move under the guide of the outer guide pipe 40, and the inner guide pipe 30 is in stop-rotation fit with the outer guide pipe 40. Specifically, the rotation stopping fit means that the inner guide tube 30 is limited in the circumferential direction by the outer guide tube 40, and the inner guide tube 30 is moved only in the axial direction of the outer guide tube 40 by the lead screw 20, but is not rotated. Further, the electric stay 100 is extended and contracted by the movement of the inner tube 30 in the axial direction of the outer tube 40.

Wherein, the inner catheter 30 is allowed to move along the axial direction in the outer catheter 40, and the sleeve 60 is sleeved outside the outer catheter 40 and connected with the outer catheter 40. Thus, the outer guide tube 40 is fixed by the sleeve 60, and the fixed outer guide tube 40 provides a limit guide for the moving inner guide tube 30 to prevent the inner guide tube 30 from rotating. Moreover, at least the part of the sleeve 60 connected with the outer guide pipe 40 is light-transmitting, at least the part of the outer guide pipe 40 connected with the sleeve 60 is light-proof, and the outer guide pipe 40 is laser-welded on the inner wall of the sleeve 60, so that the assembly of the outer guide pipe 40 and the sleeve 60 is realized. Thus, the outer guide tube 40 and the sleeve 60 are laser welded to replace a pressure point process, so that the sleeve 60 is not deformed by an external force, the concentricity of the sleeve 60 and the coaxiality of the electric stay bar 100 are improved, and the assembly precision of the electric stay bar 100 is improved. Meanwhile, compared with a pressure point process, the sleeve 60 is not necessarily required to be a metal tube in the laser welding process, so that the material diversity of the sleeve 60 is increased, for example, the sleeve 60 may be a plastic part, so as to reduce the overall weight of the electric stay 100.

Alternatively, the sleeve 60 is entirely transparent to light, the outer guide tube 40 is entirely opaque to light, the sleeve 60 is made of one material, the outer guide tube 40 is also made of one material, and the sleeve 60 and the outer guide tube 40 are manufactured in a simpler manner.

Further, the outer guide tube 40 comprises a fixed seat 41 and a main tube body 43, the fixed seat 41 is arranged at one end of the main tube body 43 and is welded with the inner wall of the sleeve 60 by laser, and the outer guide tube 40 is assembled in the sleeve 60 by matching the fixed seat 41 with the sleeve 60.

Specifically, the outer diameter of the fixing seat 41 is larger than the outer diameter of the main pipe 43, so that when the fixing seat 41 abuts against the inner wall of the casing 60, a gap is formed between the main pipe 43 and the inner wall of the casing 60, and thus, the outer conduit 40 and the casing 60 are fixedly connected, and meanwhile, other parts such as an elastic member can be assembled by using the gap between the main pipe 43 and the inner wall of the casing 60.

In one embodiment, the holder 41 has an interference fit with the sleeve 60. In the sleeve pipe 60 is located with outer pipe 40 cover at first in the assembling process to make fixing base 41 and sleeve pipe 60 rivet through interference fit, carry out preliminary fixed to outer pipe 40, outer pipe 40 is located correct mounted position after, and rethread laser welded connection fixing base 41 and sleeve pipe 60 have so been equivalent to fixed fixing base 41 and sleeve pipe 60 twice, connect more accurately reliable.

Optionally, a boss 61 is convexly provided on the inner wall of the sleeve 60, the end of the fixing seat 41 close to the main pipe 43 abuts against the boss 61 along the axial direction of the sleeve 60, and the installation position of the outer guide pipe 40 is limited by the boss 61 in the axial direction of the sleeve 60. When the outer guide tube 40 is assembled in the sleeve 60, the main tube 43 is first passed through the middle through hole of the boss 61, the fixing seat 41 is moved in the direction close to the boss 61, and finally the fixing seat 41 abuts against the boss 61, and the outer guide tube 40 reaches a preset mounting position, so that subsequent laser welding can be performed.

As shown in fig. 2-3, the electric stay 100 further includes a waterproof rubber ring 70, the surface of the end portion of the fixed seat 41, which faces away from the main pipe 43, is provided with an opening mounting groove 42, the waterproof rubber ring 70 is disposed in the mounting groove 42 through the opening, and the waterproof rubber ring 70 is located between the outer conduit 40 and the bearing seat 50, so as to prevent water from entering the motor 10 through a telescopic gap when the inner conduit 30 is stretched and contracted, and to prevent the motor 10 from being separated from the motor 10 on one side of the bearing seat 50.

The electric stay 100 further includes a gasket 80, the gasket 80 abuts between the end of the fixed seat 41 facing away from the main pipe 43 and the bearing seat 50, and covers at least part of the opening of the mounting groove 42, so that the gasket 80 blocks the waterproof rubber ring 70 in the mounting groove 42, and the waterproof rubber ring 70 is prevented from moving out through the opening of the mounting groove 42. Specifically, the waterproof rubber ring 70 abuts between the gasket 80 and the bottom wall of the mounting groove 42 along the axial direction of the outer guide tube 40, the waterproof rubber ring 70 is fixed by the gasket 80, and meanwhile, the gasket 80 itself abuts and is fixed between the fixed seat 41 and the bearing seat 50.

As shown in fig. 3-4, in one embodiment, a limiting member 45 is disposed on a surface of the fixed seat 41 facing away from the end of the main pipe 43, a preset installation position 44 is formed on the limiting member 45, and the gasket 80 is radially limited and assembled in the preset installation position 44, and the gasket 80 is radially controlled by the preset installation position 44, so that the installation of the gasket 80 is facilitated, the coaxiality of the installation of the gasket 80 is ensured, and the gasket 80 is prevented from being dislocated during the assembly. Optionally, the preset installation position 44 is centered on the axis of the outer guide tube 40, and when the gasket 80 is assembled in the preset installation position 44, the coaxiality of the gasket 80 and the outer guide tube 40 can be ensured.

Specifically, the limiting member 45 includes a plurality of limiting portions 452, the plurality of limiting portions 452 are distributed along the circumferential direction of the fixing base 41 at intervals, and at least two limiting portions 452 are oppositely disposed along the radial direction of the fixing base 41 to form the predetermined mounting position 44, which is equivalent to limiting the gasket 80 at the periphery of the gasket 80 by the plurality of limiting portions 452, so as to prevent the gasket 80 from moving along the radial direction. Meanwhile, the gasket 80 is clamped between the limiting parts 452, and the gasket 80 is fixed through the limiting parts 452, so that the gasket 80 is prevented from moving and dislocating, and the assembly efficiency is improved.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. An electric stay (100), characterized in that the electric stay (100) comprises:

an outer guide tube (40), the inner guide tube (30) being allowed to move in the axial direction inside the outer guide tube (40);

the sleeve (60) is sleeved outside the outer guide pipe (40) and is connected with the outer guide pipe (40);

wherein at least the part of the sleeve (60) connected with the outer conduit (40) is light-transmitting, at least the part of the outer conduit (40) connected with the sleeve (60) is light-proof, and the outer conduit (40) is laser-welded on the inner wall of the sleeve (60).

2. The motorized brace bar (100) of claim 1 wherein the sleeve (60) is entirely light transmissive and the outer conduit (40) is entirely light opaque.

3. The electric strut (100) according to claim 1 or 2, wherein said outer conduit (40) comprises a fixed seat (41) and a main tube (43), said fixed seat (41) being provided at one end of said main tube (43) and being laser welded to the inner wall of said sleeve (60).

4. The electric stay (100) of claim 3 wherein the fixing seat (41) is an interference fit with the bushing (60).

5. Electric strut (100) according to claim 3, characterized in that the outer diameter of the fixed seat (41) is greater than the outer diameter of the main tube (43).

6. The electric support rod (100) of claim 5, wherein a boss (61) is convexly arranged on the inner wall of the sleeve (60), and the end of the fixed seat (41) close to the main pipe body (43) is abutted with the boss (61) along the axial direction of the sleeve (60).

7. The electric stay bar (100) of claim 3, further comprising a waterproof rubber ring (70), wherein a mounting groove (42) with an opening is formed on the surface of the fixing seat (41) facing away from the end of the main pipe body (43), the waterproof rubber ring (70) is arranged in the mounting groove (42) through the opening, and the waterproof rubber ring (70) is located between the outer conduit (40) and the bearing seat (50).

8. The electric stay (100) of claim 7, further comprising a gasket (80), wherein the gasket (80) abuts between the end of the fixed seat (41) facing away from the main pipe (43) and the bearing seat (50), and shields at least part of the opening of the mounting groove (42); the waterproof rubber ring (70) is abutted between the gasket (80) and the bottom wall of the mounting groove (42) along the axial direction of the outer guide pipe (40).

9. The electric stay (100) of claim 8, wherein the surface of the fixed seat (41) facing away from the end of the main pipe body (43) is provided with a limiting member (45), the limiting member (45) forms a preset installation position (44), and the gasket (80) is radially limited and assembled on the preset installation position (44).

10. The electric stay (100) of claim 9, wherein the position-limiting member (45) comprises a plurality of position-limiting portions (452), the plurality of position-limiting portions (452) are spaced apart from each other along the circumferential direction of the fixing base (41), at least two position-limiting portions (452) are oppositely disposed along the radial direction of the fixing base (41) to form the predetermined mounting position (44), and the gasket (80) is clamped between the plurality of position-limiting portions (452).