Electric supporting rod for automobile tail door

Abstract

The utility model provides an electric supporting rod for an automobile tail door, and belongs to the field of automobile accessories. The problem that an existing automobile tail door electric supporting rod is inconvenient to assemble is solved. The electric supporting rod of the automobile tail door comprises an outer sleeve, a motor shell and a spring guide pipe, the motor shell and the spring guide pipe are arranged in the outer sleeve, a pull rod is arranged in the spring guide pipe in a sliding mode, a lead screw nut and a lead screw in threaded fit with the lead screw nut are arranged in the pull rod, and a spring acting on the pull rod is arranged outside the spring guide pipe in a sleeving mode. The lead screw sequentially penetrates through the bearing and the damper and then is connected with the motor, a clamping groove used for installing the bearing is formed in a motor shell, the width of the clamping groove is larger than the thickness of the bearing, and a positioning piece used for axially positioning the bearing is arranged in the clamping groove. As the width of the clamping groove is larger than the thickness of the bearing, the bearing is firstly arranged in the clamping groove and then the positioning sheet is arranged during installation, and the assembly is convenient.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of automobile accessories, and relates to an electric supporting rod for automobile tail door. BACKGROUND

[0002] The electric supporting rod for automobile tail door is an actuating mechanism for realizing the opening or closing operation of the tail door in the electric tail door system, and is a special component for adjusting the opening degree of the tail door.

[0003] For example, a kind of auxiliary supporting rod for opening and closing automobile tail door is disclosed in Chinese patent [authorized publication number CN218293232U], including fixed sleeve, sliding sleeve, fixed joint, sliding joint, sliding sleeve is slidably fitted in the inner hole of fixed sleeve, one damper housing is arranged in fixed sleeve inner end close to fixed joint, damper housing is provided with damper, the tail end of a screw rod passes through damper, bearing is also provided in damper housing, bearing is sleeved on screw rod, located between screw rod and damper housing, damper housing one end is clamped with fixed joint, damper housing other end is circumferentially fixed spring guide sleeve, limiting flange is arranged in fixed sleeve, limiting flange forms axial limit to spring guide sleeve, spring is sleeved on spring guide sleeve, and the spring is located between spring guide sleeve and sliding sleeve.

[0004] In order to axially limit bearing, clamping groove is arranged in damper housing, since the matching precision of bearing and clamping groove is high, bearing is not easy to be installed into clamping groove, and equipment is more difficult. UTILITY MODEL CONTENTS

[0005] The utility model aims at the above-mentioned problems existing in prior art, and provides an electric supporting rod for automobile tail door which is easy to assemble.

[0006] The utility model can be realized by the following technical schemes.

[0007] An electric supporting rod for automobile tail door, including outer sleeve, motor housing and spring guide pipe arranged in outer sleeve, the spring guide pipe is slidably provided with pull rod, the pull rod is provided with screw nut and screw rod matched with screw nut, the spring guide pipe is provided with spring acting on pull rod, the motor housing is provided with motor, damper and bearing, the screw rod is sequentially threaded through bearing and damper and connected with motor, the motor housing is provided with clamping groove for installing bearing, the width of clamping groove is greater than the thickness of bearing, the clamping groove is provided with positioning sheet for axially positioning bearing.

[0008] The inner annular surface of the clamping groove matches the outer annular surface of the bearing, so that the radial positioning of the bearing is realized, and the axial positioning of the bearing is realized through the cooperation of the clamping groove and the positioning piece, thereby improving the stability of the bearing.

[0009] In the above-mentioned electric supporting rod for automobile tail door, the positioning piece is annular and is sleeved on the screw rod, and the hole diameter of the positioning piece is larger than the rod diameter of the screw rod.

[0010] The positioning piece is sleeved on the screw rod and will not fall off, and the bearing is first installed and then the positioning piece is clamped to limit the bearing, so that the assembly is easier. When the bearing is installed in the clamping groove, the positioning piece with a larger hole diameter is still in a free state, facilitating clamping of the positioning piece into the clamping groove.

[0011] In order to facilitate assembly, the motor housing includes an upper shell and a lower shell, the upper shell and the lower shell are the same structure, and the two can be mutually buckled through the clamping of the clamping piece and the boss.

[0012] In the above-mentioned electric supporting rod for automobile tail door, a first rubber sleeve is sleeved on the damper. The first rubber sleeve added outside the damper plays a damping role, helps to eliminate abnormal noise, and improves the running stability.

[0013] In the above-mentioned electric supporting rod for automobile tail door, second rubber sleeves are sleeved on both ends of the motor. The second rubber sleeves provided can ensure the coaxiality of the motor and the motor housing, and can reduce the noise of the motor and improve the running stability.

[0014] In the above-mentioned electric supporting rod for automobile tail door, a fixed end head connected with the motor housing is arranged at one end of the outer sleeve, and a first sealing ring is arranged between the fixed end head and the outer sleeve. The fixed end head is connected with the vehicle body, and waterproof and dustproof are realized through the first sealing ring.

[0015] In the above-mentioned electric supporting rod for automobile tail door, the middle part of the outer sleeve has a radially inwardly protruding limiting stop, one end of the spring close to the motor abuts against the limiting stop, one end of the spring guide pipe close to the motor housing has an annular shoulder limited between the limiting stop and the motor housing, and a second sealing ring is arranged between the annular shoulder and the outer sleeve. The second sealing ring improves the sealing property and realizes dustproof and waterproof.

[0016] In the above-mentioned electric supporting rod for automobile tail door, a third sealing ring is arranged between the spring guide pipe and the pull rod. The third sealing ring improves the sealing property and realizes dustproof and waterproof.

[0017] In the automobile electric tail door support rod, the end of the pull rod away from the motor is fixed with a telescopic end head, the telescopic end head is fixed with a telescopic end guide pipe in sliding fit with the outer sleeve, and the spring is located in the telescopic end guide pipe and the end of the spring away from the motor abuts against the telescopic end guide pipe.

[0018] In the automobile electric tail door support rod, the telescopic end head is riveted with the pull rod.

[0019] In the automobile electric tail door support rod, the telescopic end guide pipe is provided with a maximum extension position mark.

[0020] Compared with the prior art, the automobile electric tail door support rod has the following advantages:

[0021] Since the width of the clamping groove is greater than the thickness of the bearing, the bearing is first installed into the clamping groove, and then the positioning piece is installed, so that the motor and the screw rod are more easily assembled; the second rubber sleeve at the two ends of the motor can ensure the coaxiality of the motor and the motor shell, and can reduce the noise of the motor and improve the running stability; the first rubber sleeve on the damper can help eliminate abnormal noise and improve the running stability; the first, second and third sealing rings improve the waterproof and dustproof performance of the electric support rod. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a structural schematic view of the electric support rod in the elongated state.

[0023] Figure 2 is a sectional view of the electric support rod in the contracted state.

[0024] Figure 3 is a schematic view of the internal structure of the electric support rod at the motor.

[0025] Figure 4 is a sectional view of the electric support rod at the third sealing ring.

[0026] Figure 5 is a schematic view of the connection between the telescopic end head and the pull rod.

[0027] In the figure, 1, outer sleeve; 2, motor housing; 3, spring guide pipe; 4, pull rod; 5, screw nut; 6, screw rod; 7, spring; 8, motor; 9, damper; 10, bearing; 11, positioning sheet; 12, first rubber sleeve; 13, second rubber sleeve; 14, fixed end; 15, first sealing ring; 16, limiting stop; 17, annular shoulder; 18, second sealing ring; 19, third sealing ring; 20, telescopic end; 21, telescopic end guide pipe; 22, maximum extension position mark. DETAILED DESCRIPTION

[0028] The following is a specific embodiment of the utility model and further describes the technical scheme of the utility model in combination with the drawings, but the utility model is not limited to these embodiments.

[0029] As shown in Figure 1 and Figure 2 , the automobile tail door electric supporting rod comprises an outer sleeve 1, a motor housing 2 and a spring guide pipe 3 arranged in the outer sleeve 1, a limiting stop 16 radially protruding in the middle of the outer sleeve 1, the motor housing 2 being located on one side of the limiting stop 16, and the spring guide pipe 3 being located on the other side of the limiting stop 16. Figure 2 As shown in , a fixed end 14 for connecting with a vehicle body is arranged at one end of the outer sleeve 1 close to the motor housing 2, a first sealing ring 15 is arranged between the fixed end 14 and the outer sleeve 1, and a telescopic end 20 for connecting with a tail door is arranged at one end of the outer sleeve 1 close to the spring guide pipe 3.

[0030] Figure 2 As shown in , a pull rod 4 is arranged to slide in the spring guide pipe 3, a screw nut 5 and a screw rod 6 threadedly matched with the screw nut 5 are arranged in the pull rod 4, a spring 7 acting on the pull rod 4 is arranged outside the spring guide pipe 3, one end of the spring 7 close to the motor 8 abuts against the limiting stop 16, one end of the spring guide pipe 3 close to the motor housing 2 has an annular shoulder 17 limited between the limiting stop 16 and the motor housing 2, and a second sealing ring 18 is arranged between the annular shoulder 17 and the outer sleeve 1.

[0031] Figure 4 As shown in , a third sealing ring 19 is arranged between the spring guide pipe 3 and the pull rod 4.

[0032] Figure 1 , 2 and Figure 5 , the telescopic end 20 is fixed with a telescopic end guide pipe 21 slidingly matched with the outer sleeve 1, the spring 7 is located in the telescopic end guide pipe 21, and one end of the spring 7 away from the motor 8 abuts against the telescopic end guide pipe 21. In this embodiment, the telescopic end 20 is riveted with the pull rod 4, compared with the threaded connection mode of the telescopic end 20 and the pull rod 4, the riveted connection is reliable and not easy to loosen.

[0033] AsFigure 1 As shown in the drawings, the telescopic end conduit 21 is provided with a maximum extension position mark 22, when the telescopic end conduit 21 is extended to the maximum position, the maximum extension position mark 22 is aligned with the end of the outer cylinder body away from the motor 8, so that it is easy to identify whether the electric supporting rod is in the maximum extension position when leaving the factory.

[0034] As shown in the drawings, Figure 2 and Figure 3 The motor housing 2 is provided with a motor 8, a damper 9 and a bearing 10, the screw rod 6 is connected with the motor 8 after passing through the bearing 10 and the damper 9 in sequence, the motor housing 2 is provided with a clamping groove for mounting the bearing 10, the width of the clamping groove is greater than the thickness of the bearing 10, and the clamping groove is provided with a positioning piece 11 for axially positioning the bearing 10.

[0035] In this embodiment, the width of the clamping groove is 9mm, the thickness of the bearing 10 is 8mm, and the thickness of the positioning piece 11 is 1mm. The inner ring surface of the clamping groove cooperates with the outer ring surface of the bearing 10 to realize the radial positioning of the bearing 10, and the cooperation of the clamping groove and the positioning piece 11 can realize the axial positioning of the bearing 10, thereby improving the stability of the bearing 10. Since the width of the clamping groove is greater than the thickness of the bearing 10, the bearing 10 is first mounted into the clamping groove, and then the positioning piece 11 is mounted, so that the assembly is convenient.

[0036] In this embodiment, the positioning piece 11 is annular and is sleeved on the screw rod 6, and the hole diameter of the positioning piece 11 is greater than the rod diameter of the screw rod 6. The positioning piece 11 is sleeved on the screw rod 6 and will not fall off, and the bearing 10 is first mounted, and then the positioning piece 11 is clamped to limit the bearing 10, so that the assembly is easier. When the bearing 10 is mounted into the clamping groove, the positioning piece 11 with the larger hole diameter is still in a free state, so that the positioning piece 11 can be clamped into the clamping groove.

[0037] In order to facilitate assembly, as shown in the drawings, Figure 3 The motor housing 2 includes an upper housing and a lower housing, the upper housing and the lower housing are the same structure, and the two can be buckled to each other by limiting the clamps and the bosses.

[0038] As shown in the drawings, Figure 2 and Figure 3 The damper 9 is sleeved with a first rubber sleeve 12, which plays a damping role and helps to eliminate abnormal noise and improve running stability.

[0039] As shown in the drawings, Figure 2 The two ends of the motor 8 are sleeved with a second rubber sleeve 13, which can ensure the coaxiality of the motor 8 and the motor housing 2, reduce the noise of the motor 8, and improve the running stability.

[0040] In assembling, the second rubber sleeve 13 is sleeved on both ends of the motor 8, the motor 8 sleeved with the second rubber sleeve 13 is installed into the lower shell; the first rubber sleeve 12 is sleeved on the damper 9, the damper 9 is installed into the lower shell; the bearing 10 is installed into the lead screw 6, the clip is riveted, and the positioning sheet 11 is sleeved; the bearing 10 is installed into the clamping groove, and the positioning sheet 11 is clamped to limit the bearing 10; the fixed end head 14 is installed, and the upper shell is buckled; the pull rod 4 fixed with the lead screw nut 5 is installed, the pull rod 4 is matched with the lead screw 6 through trapezoidal threads, when the motor 8 drives the lead screw 6 to rotate, the pull rod 4 moves axially, and the extension and shortening of the electric supporting rod are realized; the third sealing ring 19 is installed between the pull rod 4 and the spring guide pipe 3 through the clip; the above-mentioned assembled structure is installed into the outer sleeve 1; the spring 7 is installed, the telescopic end guide pipe 21 is assembled, and the telescopic end head 20 is assembled.

[0041] The specific embodiments described herein are merely illustrative of the spirit of the present application. Those skilled in the art of the present application can make various modifications or supplements to the described specific embodiments or replace them with similar ways, but will not deviate from the spirit of the present application or exceed the scope defined by the appended claims.

Claims

1. A motorized support rod for a tailgate of a vehicle, comprising an outer sleeve (1), a motor housing (2) and a spring guide tube (3) arranged in the outer sleeve (1), a pull rod (4) being slidably arranged in the spring guide tube (3), a screw nut (5) and a screw rod (6) threadedly cooperating with the screw nut (5) being arranged in the pull rod (4), and a spring (7) being arranged outside the spring guide tube (3) and acting on the pull rod (4), characterized in that The motor housing (2) is provided with a motor (8), a damper (9) and a bearing (10), the screw rod (6) is connected with the motor (8) after passing through the bearing (10) and the damper (9) in sequence, the motor housing (2) is provided with a clamping groove for mounting the bearing (10), the width of the clamping groove is greater than the thickness of the bearing (10), and the clamping groove is provided with a positioning sheet (11) for axially positioning the bearing (10).

2. The electrically powered support rod for a tailgate of an automobile according to claim 1, characterized by The positioning sheet (11) is annular and is sleeved on the screw rod (6), and the hole diameter of the positioning sheet (11) is greater than the rod diameter of the screw rod (6).

3. The electrically powered support rod for a tailgate of a vehicle of claim 1, wherein, The damper (9) is sleeved with a first rubber sleeve (12).

4. The electrically powered support rod for a tailgate of a vehicle of claim 1, wherein, The two ends of the motor (8) are sleeved with a second rubber sleeve (13).

5. The electrically powered support rod for a tailgate of a vehicle of claim 1, wherein, One end of the outer sleeve (1) located in the motor housing (2) is provided with a fixed end head (14) connected with the motor housing (2), and the first sealing ring (15) is arranged between the fixed end head (14) and the outer sleeve (1).

6. The electrically powered support rod for a tailgate of a vehicle of claim 1, wherein, The middle part of the outer sleeve (1) has a radially inwardly protruding limiting stop (16), one end of the spring (7) close to the motor (8) abuts against the limiting stop (16), one end of the spring guide pipe (3) close to the motor housing (2) has an annular stop shoulder (17) limited between the limiting stop (16) and the motor housing (2), and the second sealing ring (18) is arranged between the annular stop shoulder (17) and the outer sleeve (1).

7. The electrically powered support rod for a tailgate of a vehicle of claim 1, wherein, The third sealing ring (19) is arranged between the spring guide pipe (3) and the pull rod (4).

8. The electrically powered support rod for a tailgate of a vehicle of claim 1, wherein, One end of the pull rod (4) away from the motor (8) is fixed with a telescopic end head (20), the telescopic end head (20) is fixed with a telescopic end guide pipe (21) in sliding fit with the outer sleeve (1), the spring (7) is located in the telescopic end guide pipe (21), and one end of the spring (7) away from the motor (8) abuts against the telescopic end guide pipe (21).

9. The electrically powered support rod for a tailgate of a vehicle of claim 8, wherein, The telescopic end head (20) is riveted with the pull rod (4).

10. The electrically powered support rod for a tailgate of a vehicle of claim 8, wherein, The telescopic end guide pipe (21) is provided with a maximum extension position mark (22).

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