Electric lifting device for automobile tail door

Abstract

The utility model discloses an electric lifting device for an automobile tail door, which relates to the technical field of coiled material gluing and comprises an outer rod and an inner rod, a motor is mounted in the outer rod, the output end of the motor is connected with a screw, a waterproof plate is mounted on the outer side of an output shaft of the motor, water outlet holes are distributed in the surface of the outer rod, the inner rod is arranged on the outer side of the screw, and the inner rod is arranged on the outer side of the screw. A second hinge shaft is installed at the top end of the inner rod, a connecting ring is fixed to the lower end of the inner rod, a movable block is integrally arranged on the outer side of the connecting ring, and a limiting groove is formed in the inner wall of the outer rod. The motor and the waterproof plate are installed in the outer rod, the waterproof plate is arranged above the motor, and the output end of the motor penetrates through the waterproof plate through the bearing, so that an output shaft of the motor penetrates through the waterproof plate and smoothly rotates, accumulated water enters the outer rod through a gap between the outer rod and the inner rod, and the accumulated water can be effectively intercepted through the waterproof plate; accumulated water is prevented from being in contact with the motor, and the accumulated water in the outer rod is quickly discharged through the water outlet.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile accessories, in particular to an electric lifting device for an automobile tailgate. Background Art

[0002] There are usually two ways to lift the tailgate of a general car. One is to use a high-pressure gas spring as a supporting tool. When opening the tailgate, the tailgate lock is loosened manually or electrically to allow the high-pressure gas spring to prop up the tailgate. When closing the tailgate, the tailgate needs to be pressed down by hand, which is more laborious. The other is to use an electric lifting rod to control the lifting of the tailgate.

[0003] The existing electric lifting rod is usually provided with an inner rod and an outer rod. Since the outer rod and the inner rod are movable, there is a gap between the outer rod and the inner rod, which causes water to flow into the outer rod through the gap. The infiltrated water can easily damage the motor in the outer rod and shorten the service life of the motor. Secondly, the electric lifting rod adopts an integrated structure and is not easy to disassemble. When either the inner rod or the outer rod of the electric lifting rod is damaged, it can only be replaced as a whole, which is relatively wasteful. Therefore, there is an urgent need for an electric lifting device for the tailgate of a car. Utility Model Content

[0004] Based on this, the purpose of the utility model is to provide an electric lifting device for a car tailgate, so as to solve the problem that the existing electric lifting rod is usually provided with an inner rod and an outer rod. Since the outer rod and the inner rod are movable, the outer rod and the inner rod are not fitted together and a gap is left, resulting in accumulated water flowing into the outer rod through the gap. The infiltrated accumulated water can easily damage the motor in the outer rod, shortening the service life of the motor. Secondly, the electric lifting rod adopts an integrated structure and is not easy to disassemble. When either the inner rod or the outer rod in the electric lifting rod is damaged, it can only be replaced as a whole, which is relatively wasteful.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solution: an electric lifting device for a car tailgate, comprising an outer rod and an inner rod, a motor is installed inside the outer rod, and a screw is connected to the output end of the motor, a waterproof plate is installed outside the output shaft of the motor, and water outlet holes are distributed on the surface of the outer rod.

[0006] The inner rod is arranged outside the screw rod, and a hinge shaft 2 is installed on the top of the inner rod. A connecting ring is fixed on the lower end of the inner rod, and a movable block is integrated on the outer side of the connecting ring. A limiting groove is provided on the inner wall of the outer rod.

[0007] Preferably, a bearing is installed in the middle of the waterproof board, and the waterproof board is rotatably connected to the screw through the bearing, and the upper surface of the waterproof board is flush with the water outlet.

[0008] Preferably, a hinge shaft 1 is installed at the lower end of the outer rod, and the outer rod is rotatably connected to the automobile frame through the hinge shaft 1.

[0009] Preferably, the inner rod is arranged between the outer rod and the screw rod, and the inner diameter of the inner rod is larger than the outer diameter of the screw rod, and the outer diameter of the inner rod is smaller than the inner diameter of the outer rod.

[0010] Preferably, a threaded hole is provided inside the connecting ring, and the connecting ring is threadedly connected to the screw rod, and the outer diameter of the connecting ring is smaller than the inner diameter of the outer rod.

[0011] Preferably, one end of the movable block away from the connecting ring is inserted into the limiting groove, and the contact surface between the movable block and the limiting groove is smooth.

[0012] Preferably, a capping block is fixed to the top of the limiting groove, and the upper surface of the capping block is flush with the upper surface of the outer rod, and a small screw penetrates the interior of the capping block.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. In the utility model, a motor and a waterproof plate are installed inside the outer rod. The waterproof plate is arranged above the motor, and the output end of the motor passes through the waterproof plate through a bearing, so the motor output shaft passes through the waterproof plate and rotates smoothly. The accumulated water enters the inner part of the outer rod through the gap between the outer rod and the inner rod. The accumulated water can be effectively intercepted by the waterproof plate to prevent the accumulated water from contacting the motor. The accumulated water in the outer rod is quickly discharged through the water outlet hole.

[0015] 2. With the mutual cooperation of the screw rod, the movable block, the connecting ring and the limit groove, the utility model enables the inner rod to have a lifting function. Since the inner and outer sides of the inner rod do not contact the screw rod and the outer rod, and the contact surface between the movable block and the limit groove is smooth, the friction force and resistance generated during the lifting process of the inner rod are small, which reduces the difficulty of lifting the inner rod, thereby reducing the motor load and extending the service life of the device.

[0016] 3. The top capping block of the limit groove in the utility model is fixed by a small screw. When the thread on the outer surface of the screw rod or the thread on the inner surface of the connecting ring is damaged, the small screw can be turned out counterclockwise, and then the capping block can be removed from the top of the limit groove. In this way, the inner rod and the connecting ring can be separated from the outer rod, and they can be replaced separately according to the damaged parts to avoid waste caused by overall replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0018] Figure 2 It is a schematic diagram of the structure of the utility model;

[0019] Figure 3 This is a schematic diagram of the inner rod rising structure of the utility model;

[0020] Figure 4 It is a schematic diagram of the three-dimensional structure of the connecting ring of the utility model;

[0021] Figure 5 For the utility model Figure 3 Enlarged structural diagram at A in the middle.

[0022] In the figure: 1. Outer rod; 2. Motor; 3. Screw; 4. Waterproof plate; 5. Water outlet hole; 6. Hinge axis 1; 7. Inner rod; 8. Hinge axis 2; 9. Connecting ring; 10. Movable block; 11. Limiting groove; 12. Capping block; 13. Small screw. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. The embodiments described below with reference to the drawings are exemplary and are only used to explain the utility model, and cannot be understood as limiting the utility model.

[0024] The following describes an embodiment of the utility model based on its overall structure.

[0025] See also Figure 1-5 The electric lifting device for the tailgate of an automobile comprises an outer rod 1 and an inner rod 7. A motor 2 is installed inside the outer rod 1, and a screw 3 is connected to the output end of the motor 2. A waterproof plate 4 is installed outside the output shaft of the motor 2. Water outlet holes 5 are distributed on the surface of the outer rod 1. A bearing is installed in the middle of the waterproof plate 4, and the waterproof plate 4 is rotatably connected to the screw 3 through the bearing, and the upper surface of the waterproof plate 4 is flush with the water outlet hole 5. The motor 2 drives the screw 3 to rotate through the output shaft, and the edge of the waterproof plate 4 is fixed to the inner wall of the outer rod 1. The output shaft of the motor 2 penetrates the waterproof plate 4 and rotates smoothly. The accumulated water can be effectively intercepted through the waterproof plate 4 to prevent the accumulated water from contacting the motor 2, and the accumulated water in the outer rod 1 is quickly discharged through the water outlet hole 5;

[0026] The inner rod 7 is arranged outside the screw rod 3, and the top end of the inner rod 7 is installed with a hinge shaft 2 8, the lower end of the outer rod 1 is installed with a hinge shaft 1 6, and the outer rod 1 is rotatably connected to the automobile frame through the hinge shaft 1 6. The bottom of the outer rod 1 and the top of the inner rod 7 of the device are rotatably connected to the rear frame of the automobile through the hinge shaft 1 6 and the hinge shaft 2 8 respectively, which is convenient for control. The inner rod 7 is arranged between the outer rod 1 and the screw rod 3, and the inner diameter of the inner rod 7 is larger than the outer diameter of the screw rod 3, and the outer diameter of the inner rod 7 is smaller than the inner diameter of the outer rod 1. This arrangement When the inner rod 7 rises, it does not directly contact the outer rod 1 and the screw rod 3, so there is no friction between the inner rod 7, the screw rod 3 and the outer rod 1, which reduces the difficulty of lifting the inner rod 7, thereby reducing the load of the motor 2 and extending the service life of the device. A connecting ring 9 is fixed to the lower end of the inner rod 7, and a movable block 10 is integrally arranged on the outer side of the connecting ring 9. A threaded hole is opened inside the connecting ring 9, and the connecting ring 9 is threadedly connected to the screw rod 3, and the outer diameter of the connecting ring 9 is smaller than the inner diameter of the outer rod 1. This setting makes the connecting ring 9 and the outer rod 1 does not have a direct contact point, which reduces the difficulty of lifting and lowering the connecting ring 9. The inner wall of the outer rod 1 is provided with a limiting groove 11, and the end of the movable block 10 away from the connecting ring 9 is inserted into the limiting groove 11, and the contact surface between the movable block 10 and the limiting groove 11 is smooth. Under the mutual cooperation of the screw rod 3, the movable block 10 and the limiting groove 11, the connecting ring 9 is lifted and lowered, and the contact surface between the movable block 10 and the limiting groove 11 is smooth, so that the friction between the movable block 10 and the limiting groove 11 is reduced, the lifting resistance of the connecting ring 9 is reduced, the inner rod 7 is more flexible, and the limiting groove 11 is smooth. A capping block 12 is fixed at the top, and the upper surface of the capping block 12 is flush with the upper surface of the outer rod 1, and a small screw 13 passes through the inside of the capping block 12. The setting of the capping block 12 can prevent the movable block 10 from detaching from the top of the limiting groove 11. Since the capping block 12 is assembled at the top of the limiting groove 11 by the small screw 13, the capping block 12 is detachable. When the thread on the outer surface of the screw 3 or the thread on the inner surface of the connecting ring 9 is damaged, the inner rod 7 and the outer rod 1 can be disassembled and replaced separately to avoid waste caused by overall replacement.

[0027] Working principle: When in use, the bottom of the outer rod 1 and the top of the inner rod 7 of the device are rotatably connected to the rear frame of the car through the hinge shaft 1 6 and the hinge shaft 2 8 respectively. When the device is working, the motor 2 drives the screw rod 3 to rotate. Since the connecting ring 9 is threadedly connected with the screw rod 3, and the movable block 10 and the limiting groove 11 cooperate with each other, the connecting ring 9 has a lifting function. Since the connecting ring 9 and the inner rod 7 do not contact the inner wall of the outer rod 1 and do not generate friction, and the contact surface of the movable block 10 and the limiting groove 11 is smooth, the resistance encountered by the connecting ring 9 and the inner rod 7 during the lifting process is small, so that the inner rod 7 has a flexible lifting function. When the tailgate is opened, the accumulated water enters the outer rod 1 through the gap between the inner rod 7 and the outer rod 1. Since the motor 2 is covered with a waterproof plate 4, the accumulated water can be effectively intercepted by the waterproof plate 4 to prevent the accumulated water from contacting the motor 2. The accumulated water in the outer rod 1 is quickly discharged through the water outlet 5. When the thread on the outer surface of the screw rod 3 or the thread on the inner surface of the connecting ring 9 is damaged, the small screw 13 can be turned counterclockwise, and then the capping block 12 can be removed from the top of the limiting groove 11. In this way, the inner rod 7 and the connecting ring 9 can be separated from the outer rod 1, and they can be replaced separately according to the damaged parts to avoid waste caused by overall replacement.

[0028] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0029] The directions or positional relationships indicated by terms such as "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the directions or positional relationships shown in the accompanying drawings. They are merely simplified descriptions for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the protection content of the present invention.

[0030] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. An electric lifting device for a car tailgate, comprising an outer rod (1) and an inner rod (7), characterized in that: A motor (2) is installed inside the outer rod (1), and the output shaft of the motor (2) is connected to a screw rod (3). A waterproof plate (4) is installed outside the output shaft of the motor (2), and water outlet holes (5) are distributed on the surface of the outer rod (1); The inner rod (7) is arranged on the outside of the screw rod (3), and a hinge shaft 2 (8) is installed on the top end of the inner rod (7). A connecting ring (9) is fixed on the lower end of the inner rod (7), and a movable block (10) is integrally arranged on the outside of the connecting ring (9). A limiting groove (11) is provided on the inner wall of the outer rod (1).

2. The electric lifting device for a car tailgate according to claim 1, characterized in that: A bearing is installed in the middle of the waterproof plate (4), and the waterproof plate (4) is rotatably connected to the screw rod (3) via the bearing, and the upper surface of the waterproof plate (4) is flush with the water outlet hole (5).

3. The electric lifting device for a car tailgate according to claim 1, characterized in that: A hinge shaft 1 (6) is installed at the lower end of the outer rod (1), and the outer rod (1) is rotatably connected to the automobile frame via the hinge shaft 1 (6).

4. The electric lifting device for a car tailgate according to claim 1, characterized in that: The inner rod (7) is arranged between the outer rod (1) and the screw rod (3), and the inner diameter of the inner rod (7) is larger than the outer diameter of the screw rod (3), and the outer diameter of the inner rod (7) is smaller than the inner diameter of the outer rod (1).

5. The electric lifting device for a car tailgate according to claim 1, characterized in that: A threaded hole is provided inside the connecting ring (9), and the connecting ring (9) is threadedly connected to the screw rod (3), and the outer diameter of the connecting ring (9) is smaller than the inner diameter of the outer rod (1).

6. The electric lifting device for a car tailgate according to claim 1, characterized in that: One end of the movable block (10) away from the connecting ring (9) is inserted into the limiting groove (11), and the contact surface between the movable block (10) and the limiting groove (11) is smooth.

7. The electric lifting device for a car tailgate according to claim 1, characterized in that: A capping block (12) is fixed to the top of the limiting groove (11), and the upper surface of the capping block (12) is flush with the upper surface of the outer rod (1), and a small screw (13) penetrates the interior of the capping block (12).

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