CN216866386U

CN216866386U - Electric support rod

Info

Publication number: CN216866386U
Application number: CN202220108479.0U
Authority: CN
Inventors: 吴奇旺; 杨丰霖; 奚仲强
Original assignee: Fuzhou Mingfang Automobile Parts Industry Co Ltd; Hsin Chong Machinery Works Co Ltd
Current assignee: Fuzhou Mingfang Automobile Parts Industry Co Ltd; Hsin Chong Machinery Works Co Ltd
Priority date: 2022-01-17
Filing date: 2022-01-17
Publication date: 2022-07-01
Anticipated expiration: 2032-01-17

Abstract

The utility model provides an electric support rod which comprises a driving component, an actuating component and a bearing. The driving assembly comprises a first outer pipe and a driving unit accommodated in the first outer pipe, and an inner screw thread is arranged on the inner wall of the first outer pipe. The actuating assembly comprises a second outer pipe and a transmission screw penetrating through the second outer pipe, a plurality of elastic arms are axially extended from the second outer pipe and are arranged at intervals around the transmission screw, an outer tooth structure is arranged on the outer side surface of each elastic arm, a hook part is convexly arranged on the inner side surface of each elastic arm, the second outer pipe is inserted into the first outer pipe, an inner screw thread is in threaded connection with each outer tooth structure, and one end of the transmission screw protrudes out of the first outer pipe to be in butt joint with the driving unit. The bearing is sleeved with the transmission screw rod, and the hook parts are clamped with the outer edge of the bearing. Thereby providing a two-section type electric supporting rod convenient for assembly.

Description

Electric support rod

Technical Field

The utility model relates to an electric support rod for a tail door of an automobile, in particular to a two-section electric support rod convenient to assemble.

Background

The electric tail gate of the automobile is supported by the electric support rods arranged on the left side and the right side of the door frame and drives the door plate to actuate. The electric support rod is provided with an electric motor and a telescopic rod linked with the electric motor, and the electric support rod can drive the telescopic rod to stretch and retract to open or close the door plate by controlling the electric motor to rotate.

Generally speaking, the electric support rod has an outer tube and the telescopic rod and the electric motor are all installed inside the outer tube, the telescopic rod has a screw rod connected with the electric motor, and a bearing is installed between the screw rod and the outer tube to fix the screw rod. The inner edge of the bearing needs to be tightly pressed by the screw rod, the outer edge of the bearing needs to be tightly pressed by the inner wall of the outer pipe, and the outer pipe has a certain length, so that the bearing is difficult to assemble.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims to provide a two-section type electric supporting rod convenient to assemble.

The utility model provides an electric support rod which comprises a driving component, an actuating component and a bearing. The driving assembly comprises a first outer pipe and a driving unit accommodated in the first outer pipe, the first outer pipe is provided with a first butt joint end, the first butt joint end is provided with an opening, and an inner screw thread is arranged on the inner wall of the first butt joint end. The actuating assembly comprises a second outer pipe and a transmission screw penetrating through the second outer pipe, the second outer pipe is provided with a second butt joint end, a plurality of elastic arms axially extend out of the second butt joint end and are arranged at intervals around the transmission screw, each elastic arm is provided with an inner side surface facing the transmission screw and an outer side surface back to the transmission screw, an outer tooth structure is arranged on each outer side surface, a hook part is convexly arranged on each inner side surface, the second butt joint end is inserted into the first butt joint end through an opening, an inner tooth is in threaded connection with each outer tooth structure, and one end of the transmission screw protrudes out of the first outer pipe to be in butt joint with the driving unit. The bearing is sleeved with the transmission screw rod, and the hook parts are clamped with the outer edge of the bearing.

The outer edge of the bearing of the electric support rod is attached to the inner side surface of each elastic arm.

In the electric support rod of the present invention, the actuating assembly further includes a telescopic sleeve set penetrating through the second outer tube and sleeved with the driving screw, and the telescopic sleeve set has a nut screwed with the driving screw.

The transmission screw of the electric support rod is provided with a transmission screw thread, the transmission screw is provided with a clamping tenon transversely inserted into the transmission screw, and the bearing is clamped between one end of the transmission screw thread and the clamping tenon.

In the electric support rod, each outer tooth structure comprises a plurality of parallel tooth sections, and each tooth section of each outer tooth structure is arranged on the same spiral line matched with the inner tooth.

In the electric support rod of the utility model, the outer wall of the second outer tube is provided with an outer thread connected with any outer thread structure, and the outer thread and each thread section of each outer thread structure are arranged on the same spiral line matched with the inner thread. The outer wall of the second outer tube is provided with a joint surface which is attached to the inner wall of the first outer tube. The outer screw threads are arranged between the joint surface and each outer thread structure and are in threaded connection with the inner screw threads. The joint surface is an annular curved surface surrounding the side surface of the second outer tube.

In summary, the driving unit of the electric support rod of the present invention can be pre-assembled to the first outer tube, the telescopic sleeve set, the driving screw and the bearing can be pre-assembled to the second outer tube, and then the driving screw can be connected to the driving unit and the bearing can be positioned by butting the first outer tube and the second outer tube.

Drawings

Fig. 1 is a perspective view of an electric supporting rod according to a preferred embodiment of the utility model.

Fig. 2 is an exploded perspective view of the electric supporting rod according to the preferred embodiment of the present invention.

Fig. 3 is a perspective view of an actuating assembly in an electric supporting rod according to a preferred embodiment of the utility model.

Fig. 4 is a longitudinal sectional view of the electric support rod with the driving assembly separated from the actuating assembly according to the preferred embodiment of the present invention.

Fig. 5 is a longitudinal sectional view of the electric supporting bar according to the preferred embodiment of the present invention.

In the figure:

100, a driving component; 101, opening; 110: a first outer tube; 111: a first mating end; 112, internal screw threads; 130, a driving unit; 200, an actuating assembly; 210: a second outer tube; 211, a second butt joint end; 220, a spring arm; 220a, an inner side surface; 220b, an outer side surface; 221, external screw thread; 222, external tooth structure; 222a, a tooth section; 223 hook part; 224, a joint surface; 230, a transmission screw; 231, transmission screw teeth; 232, a clamping tenon; 240, a telescopic sleeve group; 241 is a nut; 300, bearing.

Detailed Description

Referring to fig. 1 to 5, the preferred embodiment of the present invention provides an electric supporting rod, which includes a driving assembly 100, an actuating assembly 200 and a bearing 300.

In the present embodiment, the driving assembly 100 includes a first outer tube 110 and a driving unit 130 accommodated in the first outer tube 110. The first outer tube 110 has a first butt end 111, the first butt end 111 has an opening 101, and an inner wall of the first butt end 111 is provided with an inner screw 112. In the present embodiment, the driving unit 130 at least includes a motor.

The actuating assembly 200 includes a second outer tube 210 and a transmission screw 230 passing through the second outer tube 210. The second outer tube 210 has a second connection end 211, and a plurality of (more than two) spring arms 220 extending axially from the second connection end 211 and spaced around the drive screw 230. Each elastic arm 220 has an inner side 220a facing the driving screw 230 and an outer side 220b facing away from the driving screw 230, each outer side 220b is provided with an outer tooth structure 222, and each inner side 220a is provided with at least one hook 223 protruding thereon. Each outer tooth structure 222 includes a plurality of parallel tooth segments 222a, each tooth segment 222a spans the spring arm 220, and each tooth segment 222a is disposed on the same spiral line matching the inner tooth 112.

The outer wall of the second outer tube 210 has a joint surface 224 and an outer thread 221, the joint surface 224 is an annular curved surface surrounding the side surface of the second outer tube 210, and the outer thread 221 is disposed between the joint surface 224 and each of the outer thread structures 222. The outer wall of the second outer tube 210 has an outer thread 221 following any one of the outer thread structures 222, and the outer thread 221 and each of the thread segments 222a of each of the outer thread structures 222 are disposed on the same spiral line that is engaged with the inner thread 112.

The driving screw 230 is provided with a driving screw thread 231, the driving screw 230 is provided with a lug 232 transversely inserted into the driving screw 230, and the bearing 300 is held between one end of the driving screw thread 231 and the lug 232. In the embodiment, the latch 232 is shown in the form of a C-shaped buckle, but the utility model is not limited thereto, and the latch 232 may be a pin inserted into the drive screw 230.

The actuating assembly 200 further includes a telescopic tube set 240 disposed through the second outer tube 210 and sleeved with the driving screw 230, the telescopic tube set 240 having a plurality of tubes movably sleeved with each other, thereby being capable of extending and changing the length thereof. Furthermore, the telescopic sleeve 240 has a nut 241 screwed on the driving screw 230, the nut 241 is connected to one of the tubes, and the driving screw 230 can move the nut 241 along its longitudinal direction by rotating, thereby pushing the telescopic sleeve 240 to move telescopically.

In the present embodiment, the bearing 300 is ring-shaped, and the bearing 300 is sleeved on the driving screw 230 and its inner edge is preferably tightly connected to the driving screw 230. The outer diameter of the bearing 300 is matched with the circle surrounded by the inner side surface 220a of each elastic arm 220. The bearing 300 is inserted into the second outer tube 210 along the longitudinal direction of the second outer tube 210, the bearing 300 pushes against each hook 223 and pushes out each elastic arm 220 in the process of being inserted into the second outer tube 210, after the bearing 300 passes through each hook 223, each elastic arm 220 is reset inwards, so that the outer edge of the bearing 300 is attached to the inner side 220a of each elastic arm 220, and each hook 223 is clamped with the outer edge of the bearing 300 to fix the bearing 300 in the second outer tube 210.

The second butt end 211 is inserted into the first butt end 111 through the opening 101, the inner screw thread 112 is screwed to each outer screw thread structure 222, and the outer screw thread 221 is screwed to the inner screw thread 112, thereby connecting the first outer pipe 110 to the second outer pipe 210. One end of the power screw 230 protrudes out of the first outer tube 110 to be abutted against the driving unit 130, and the power screw 230 is coaxially disposed with a motor of the driving unit 130. In the present embodiment, the joint surface 224 is attached to the inner wall of the first outer tube 110, specifically, attached to the area between the opening 101 and the inner screw 112, and the joint surface 224 and the inner wall of the first outer tube 110 are fixedly connected by laser welding, high frequency bonding or bonding agent.

In summary, the driving unit 130 of the electric support rod of the present invention can be pre-assembled to the first outer tube 110, the telescopic sleeve 240, the driving screw 230 and the bearing 300 can be pre-assembled to the second outer tube 210, and the driving screw 230 can be connected to the driving unit 130 by butting the first outer tube 110 and the second outer tube 210. The second outer tube 210 has a spring arm 220, the inner and outer sides of the spring arm 220 are respectively provided with a hook 223 and an outer tooth 222, and the bearing 300 is inserted into the second outer tube 210, that is, fixed by the hook 223 to avoid falling off, so that the second outer tube 210 can be further butt-jointed with the first outer tube 110. Moreover, after the second outer tube 210 is abutted to the first outer tube 110, the elastic arm 220 can be positioned by the inner arm of the first outer tube 110 to press the outer edge of the bearing 300.

The above-mentioned embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. The equivalent substitution or change made by the technical personnel in the technical field on the basis of the utility model is all within the protection scope of the utility model. The protection scope of the utility model is subject to the claims.

Claims

1. An electric brace, comprising:

the driving assembly comprises a first outer pipe and a driving unit accommodated in the first outer pipe, wherein the first outer pipe is provided with a first butt joint end, and an inner screw thread is arranged on the inner wall of the first butt joint end;

an actuating assembly, including a second outer tube and a drive screw passing through the second outer tube, the second outer tube having a second butt end and a plurality of elastic arms extending axially from the second butt end and arranged at intervals around the drive screw, each elastic arm having an inner side facing the drive screw and an outer side facing away from the drive screw, each outer side having an outer tooth structure, each inner side having a hook portion protruding thereon, the second butt end being inserted into the first butt end, the inner tooth being screwed to the outer tooth structure, and one end of the drive screw protruding out of the first outer tube and abutting against the drive unit;

and the bearing is sleeved with the transmission screw rod, and the hook parts are clamped with the outer edge of the bearing.

2. The motorized support pole of claim 1 wherein the outer edge of the bearing is attached to the inner side of each of said spring arms.

3. The electromotive strut according to claim 1, wherein the actuating assembly further comprises a telescopic tube set inserted into the second outer tube and sleeved on the driving screw, and the telescopic tube set has a nut screwed on the driving screw.

4. The motorized support post of claim 1 wherein said drive screw has a drive thread, said drive screw has a locking lug transversely inserted into said drive screw, and said bearing is held between one end of said drive thread and said locking lug.

5. The motorized support bar of claim 1 wherein each of said outer tooth structures includes a plurality of parallel, side-by-side tooth segments, and wherein each of said tooth segments of each of said outer tooth structures is disposed on a common helix associated with said inner tooth.

6. The electromotive bracing strut according to claim 5, wherein the outer wall of the second outer tube has an outer thread following any one of the outer tooth structures, the outer thread being disposed on the same spiral line as the inner thread with each of the tooth segments of each of the outer tooth structures.

7. The electromotive strut according to claim 6, wherein the outer wall of the second outer tube has a joint surface attached to the inner wall of the first outer tube, and the outer screw thread is disposed between the joint surface and each of the outer screw structures and threadedly engaged with the inner screw thread.

8. The electromotive supporting stick as claimed in claim 1, wherein the outer wall of the second outer tube has a joint surface, and the joint surface is attached to the inner wall of the first outer tube.

9. The electromotive strut as claimed in claim 7 or 8, wherein the engaging surface is a circular curved surface surrounding the side surface of the second outer tube.