Novel L-shaped electric push rod torsional spring mechanism of three-compartment vehicle

Abstract

The invention provides a novel three-compartment vehicle L-shaped electric push rod torsion spring mechanism which comprises an L-shaped electric supporting rod and a vehicle door connecting bent pipe, an elastic connecting assembly is arranged between the L-shaped electric supporting rod and a vehicle door mounting support and comprises a torsion spring support and a torsion spring, the torsion spring support is connected between the L-shaped electric supporting rod and the vehicle door connecting bent pipe in a pin joint mode, and the torsion spring is connected between the L-shaped electric supporting rod and the vehicle door connecting bent pipe in a pin joint mode. A torsion spring installation pin shaft is arranged between the vehicle door connecting bent pipe and the torsion spring support, the torsion spring is arranged on the surface of the torsion spring installation pin shaft in a sleeved mode, the L-shaped electric supporting rod tailstock is in pin joint with a vehicle body installation seat used for supporting the L-shaped electric supporting rod, and a pin shaft is arranged at the pin joint position of the vehicle body installation seat and the L-shaped electric supporting rod. The electric push rod torsion spring mechanism for the automobile tail door can be put into use on an automobile body with a small tail box structure and a hatchback door structure, is particularly suitable for an electric push rod mechanism arranged in a small space, and can realize the effects that the electric support rod is small in stroke, proper in force arm parameter, uncomplicated in structure and low in development cost and does not interfere with automobile body parts.

Description

Technical Field

[0001] The invention relates to the technical field of automobile tailgate driving parts, in particular to a novel L-shaped electric push rod torsion spring mechanism for a three-compartment vehicle. Background Art

[0002] In the automobile market, electric tailgate struts have been widely used. One end of the electric strut is connected to the car body and the other end is connected to the door. The trunk controls the motor rotation of the electric strut through a controller to achieve linear movement of the strut, thereby meeting the door opening and closing function.

[0003] At present, the most popular models on the market are sedans. The mechanism of sedans is generally that one end of the electric push rod ball socket is connected to the body sheet metal, and the other end is connected to the door connection elbow. After the electric strut is energized, it drives the elbow hinge to move forward and backward, thereby realizing the door opening and closing. However, at present, some sedans have small trunk spaces, especially the structure of hatchbacks, which leads to too small body mounting points and hinge mounting points. It is difficult for vehicle design engineers to arrange L-shaped electric struts. Even if they are arranged, the rear force arm parameters are not ideal, and it is difficult to achieve the best effect. Summary of the invention

[0004] The object of the present invention is to provide a novel L-shaped electric push rod torsion spring mechanism for a three-compartment vehicle to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A novel L-shaped electric push rod torsion spring mechanism for a three-compartment vehicle comprises an L-shaped electric strut and a door connecting elbow, an elastic connection component is arranged between the L-shaped electric strut and the door mounting bracket, the elastic connection component comprises a torsion spring bracket and a torsion spring, the torsion spring bracket is pin-connected between the L-shaped electric strut and the door connecting elbow, a torsion spring mounting pin is arranged between the door connecting elbow and the torsion spring bracket, and the torsion spring is sleeved on the surface of the torsion spring mounting pin.

[0007] Preferably, the tail seat of the L-shaped electric strut is pin-connected with a vehicle body mounting seat for supporting the L-shaped electric strut, and a pin shaft is provided at the pin connection position between the vehicle body mounting seat and the L-shaped electric strut.

[0008] Preferably, the telescopic rod end of the L-shaped electric strut is provided with a hinged end, and the hinged end is pin-connected between the torsion spring bracket and the telescopic rod end of the L-shaped electric strut.

[0009] Preferably, the torsion spring is arranged between the side wall of the door connecting elbow and the side wall of the torsion spring bracket, and torsion spring gaskets are arranged at both ends of the torsion spring.

[0010] Preferably, the door connecting bend includes a tailgate connecting end, a first bend, a second bend and a pin connection end, one end of the tailgate connecting end is connected to the first bend through a bend, and the second bend is connected between the first bend and the pin connection end.

[0011] Preferably, one end of the tailgate connecting end is fixedly connected to a vehicle door mounting bracket, and the vehicle door mounting bracket is fixedly connected to the vehicle door.

[0012] Preferably, the end of the pin-connected end is pin-connected with a vehicle body bent pipe mounting seat, and the vehicle body bent pipe mounting seat and the end of the pin-connected end are provided with a rotating shaft.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. The electric push rod torsion spring mechanism of the automobile tailgate of the present invention can be put into use on a body of a small trunk structure and a hatchback door structure. The specific push rod torsion spring mechanism comprises a torsion spring bracket, a torsion spring and a torsion spring mounting pin shaft, and a hinged end pinned to an L-shaped electric strut at one end of the torsion spring bracket. When the L-shaped electric strut is started, the torsion spring bracket is pushed to the limit position and then the door connecting elbow is pushed to flip along the rotating shaft until the tailgate is closed. Otherwise, the tailgate is opened. Therefore, the electric push rod mechanism is particularly suitable for small space arrangement, and can realize a small electric strut stroke, suitable force arm parameters, simple structure, low development cost, and no interference with body parts.

[0015] 2. The present invention is developed based on the structure of a common electric tailgate, optimizes the design structure, and optimizes the force arm points for opening and closing the door. The mass production cost increases relatively little and has a wide range of uses, especially for vehicle body structures that are difficult to arrange. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0017] Figure 2 It is a structural schematic diagram of the tailgate of the present invention in a closed state;

[0018] Figure 3 It is a structural schematic diagram of the tailgate of the present invention in an open state;

[0019] Figure 4 It is a schematic diagram of the structure of the tailgate of the present invention in a top view when it is in an open state;

[0020] Figure 5 It is a structural schematic diagram of the open and closed states of the tailgate in the main view of the present invention;

[0021] Figure 6 It is a schematic diagram of the structure of the tailgate of the present invention in a closed state viewed from above;

[0022] Figure 7 For the present invention Figure 6 A schematic diagram of the enlarged structure of part A.

[0023] In the figure: 1. body mounting seat; 2. L-shaped electric strut; 3. door mounting bracket; 4. body elbow mounting seat; 5. door connecting elbow; 6. torsion spring bracket; 7. torsion spring; 8. torsion spring gasket; 9. torsion spring mounting pin; 10. pin; 11. hinged end; 12. rotating shaft; 13. tailgate connecting end; 14. first elbow; 15. second elbow; 16. pin connection end. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] See also Figure 1-7 , the present invention provides a technical solution:

[0026] A novel L-shaped electric push rod torsion spring mechanism for a three-compartment vehicle comprises an L-shaped electric strut 2 and a door connecting elbow 5, an elastic connection component is arranged between the L-shaped electric strut 2 and the door mounting bracket 3, the elastic connection component comprises a torsion spring bracket 6 and a torsion spring 7, the torsion spring bracket 6 is pin-connected between the L-shaped electric strut 2 and the door connecting elbow 5, a torsion spring mounting pin shaft 9 is arranged between the door connecting elbow 5 and the torsion spring bracket 6, and the torsion spring 7 is sleeved on the surface of the torsion spring mounting pin shaft 9.

[0027] In view of the small trunk space of some current three-box cars, especially the structure of hatchback cars, which leads to the body installation point and hinge installation point being too small, it is difficult to arrange the relevant structure of the support part according to the installation position of the L-shaped electric strut 2, and it is difficult to achieve the best effect. Therefore, in this embodiment, the torsion spring bracket 6 installed on the door connecting elbow 5 is kept moving outward by the torsion spring 7 and locked in position by the L-shaped electric strut 2. After the L-shaped electric strut 2 is powered on, the tailgate is opened and the relative position is reached according to the stroke of the L-shaped electric strut 2. Since the shape of the torsion spring bracket 6 can be designed by itself after calculation according to the installation point, the flip support of the device can minimize the difference in the force arm of opening and closing the tailgate to the greatest extent, and at the same time, the L-shaped electric strut 2 and the torsion spring 7 related structure set at the telescopic rod end of the L-shaped electric strut 2 are easier to install and assemble, reducing the design risk and difficulty of the structure that directly pins the L-shaped electric strut 2 and the door connecting elbow 5.

[0028] The tail seat of the L-shaped electric strut 2 is pin-connected with a vehicle body mounting seat 1 for supporting the L-shaped electric strut 2 , and a pin shaft 10 is provided at the pin connection position between the vehicle body mounting seat 1 and the L-shaped electric strut 2 .

[0029] In this embodiment, a group of vehicle body mounting seats 1 are pinned to the rear end of the L-shaped electric strut 2 via a pin shaft 10, and the vehicle body mounting seats 1 are fixedly connected to the vehicle body to support the L-shaped electric strut 2. At the same time, when the L-shaped electric strut 2 is in action, the door connecting bend 5 is prevented from causing the L-shaped electric strut 2 to rotate around the pin shaft 10 to a certain angle when flipping.

[0030] The telescopic rod end of the L-shaped electric strut 2 is provided with a hinged end 11 , and the hinged end 11 is pin-connected between the torsion spring bracket 6 and the telescopic rod end of the L-shaped electric strut 2 .

[0031] In this example, a hinged end 11 and a torsion spring bracket 6 are pinned at the telescopic rod end of the L-shaped electric strut 2. Since the L-shaped electric strut 2 and the door connecting bend 5 are connected via the torsion spring bracket 6, the door connecting bend 5 will flip during the entire driving process, and the L-shaped electric strut 2 will produce a linked rotation. Therefore, the hinged end 11 is pinned to ensure that related structures will not interfere when force is transmitted.

[0032] The torsion spring 7 is arranged between the side wall of the door connecting elbow 5 and the side wall of the torsion spring bracket 6 , and torsion spring washers 8 are arranged at both ends of the torsion spring 7 .

[0033] In the present embodiment, since the torsion spring 7 is arranged between the door connecting bend 5 and the torsion spring bracket 6, the door connecting bend 5 or the torsion spring bracket 6 will rotate during use, thereby generating a large friction force and causing damage to the structure. Since torsion spring gaskets 8 are arranged at both ends of the torsion spring 7, the friction generated on the door connecting bend 5 or the torsion spring bracket 6 during movement is reduced.

[0034] The door connecting elbow 5 includes a tailgate connecting end 13 , a first elbow 14 , a second elbow 15 and a pin connection end 16 . One end of the tailgate connecting end 13 is connected to the first elbow 14 through an elbow, and the second elbow 15 is connected between the first elbow 14 and the pin connection end 16 .

[0035] In this embodiment, due to the special curvature of the bent pipe section, the door connecting bent pipe 5 is sequentially arranged to be connected with the tailgate connecting end 13, the first bent pipe 14, the second bent pipe 15 and the pin connection end 16. This can not only meet the designer's requirements for the above-mentioned space reduction and tailgate opening, but also reduce the difficulty of manufacturing the bent pipe. At the same time, the splicing method is used to save the manufacturing cost of the bent pipe.

[0036] The end of the pin-connected end 16 is pin-connected with the vehicle body bent pipe mounting seat 4 , and the vehicle body bent pipe mounting seat 4 and the end of the pin-connected end 16 are provided with a rotating shaft 12 .

[0037] In this example, one end of the pin-connected end 16 is pin-connected to the vehicle body bend pipe mounting seat 4. The vehicle body bend pipe mounting seat 4 is first connected to the side wall of the vehicle body by utilizing the vehicle body bend pipe mounting seat 4 and then the vehicle body bend pipe mounting seat 4 and the pin-connected end 16 are hinged. A rotating shaft 12 is provided inside the vehicle body bend pipe mounting seat 4. The rotating shaft 12 provides a turning fulcrum for the door connecting bend pipe 5, i.e., the rotation center of the pin-connected position of the pin-connected end 16 and the door connecting bend pipe 5.

[0038] It should be noted that the design curvature and extension direction of the door connecting bend 5 can minimize the space occupied by the tailgate flip support structure, while ensuring the optimal stroke of the L-shaped electric strut 2 after activation and the cooperation of the door connecting bend 5 to realize the opening of the tailgate.

[0039] One end of the tailgate connecting end 13 is fixedly connected to the vehicle door mounting bracket 3 , and the vehicle door mounting bracket 3 is fixedly connected to the vehicle door.

[0040] In this embodiment, the door mounting bracket 3 used to connect the vehicle door is connected to one end of the tailgate connecting end 13. According to the setting size of the door connecting bend 5, after starting the L-shaped electric strut 2, the door connecting bend 5 can be pushed through the torsion spring bracket 6 to close the tailgate, otherwise the tailgate is opened.

[0041] Working principle: During the use of the device, the vehicle body mounting seat 1 and the vehicle body elbow mounting seat 4 are respectively fixedly mounted on the side wall of the vehicle body where the setting is required, and the reasonable position of the tailgate opening / closing is adapted;

[0042] The pin connection end 16 of the door connecting elbow 5 is pinned to the body elbow mounting seat 4, and the pin connection is completed by the rotating shaft 12, and then the elastic connection component is pinned to one end of the second elbow 15. This installation point needs to be designed after calculation according to the structure of different vehicle bodies, ensuring that the stroke of the L-shaped electric strut 2, and the cooperation between the L-shaped electric strut 2, the torsion spring bracket 6, and the door connecting elbow 5 can effectively open / close the tailgate. This structure can minimize the difference in the force arm of opening and closing the tailgate to the greatest extent, making the L-shaped electric strut 2 and the torsion spring 7 as easy to produce and assemble as possible, reducing the design risk and difficulty of the L-shaped electric strut 2;

[0043] Finally, the door mounting bracket 3 is fixedly mounted on one side of the end of the tailgate connecting end 13, and then the door mounting bracket 3 and the tailgate are fixedly connected;

[0044] When in use, the L-shaped electric strut 2 is started to pull the torsion spring bracket 6 to rotate around the torsion spring mounting pin 9. After rotating to the limit position, the door connecting elbow 5 is pulled to rotate around the rotating shaft 12, thereby driving the door mounting bracket 3 to pull the tailgate down, until the travel of the L-shaped electric strut 2 reaches the maximum, and the tailgate is closed;

[0045] It should be noted that when the telescopic rod end of the L-shaped electric strut 2 is at the maximum stroke position and the tailgate is in a closed state, when the door needs to be opened, the telescopic rod of the L-shaped electric strut 2 retracts, and the torsion spring bracket 6 is first pulled back to the extreme position opposite to the above direction, and then the torsion spring bracket 6 is used to pull the door connecting elbow 5 to rotate in the opposite direction around the rotating shaft 12 until the telescopic rod end of the L-shaped electric strut 2 is completely extended and retracted into the telescopic cylinder of the L-shaped electric strut 2, and the door is opened.

[0046] It should be noted that the appearance of the torsion spring bracket 6 is not limited to the display of this embodiment, and can be designed after calculation according to the installation point. Therefore, the provision of this device can minimize the difference in the force arm of opening and closing the tailgate to the greatest extent, making the torsion spring 7 easier to produce and assemble, and reducing the design risk and difficulty of the L-shaped electric strut 2.

[0047] It should be noted that the L-shaped electric support rod 2 is a device or equipment existing in the prior art, or a device or equipment that can be realized in the prior art. Its power supply, specific composition and principle are clear to those skilled in the art, so they are not described in detail.

[0048] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A novel L-shaped electric push rod torsion spring mechanism for a three-compartment vehicle, comprising an L-shaped electric support rod (2) and a door connecting elbow (5), characterized in that: An elastic connection component is arranged between the L-shaped electric support rod (2) and the vehicle door mounting bracket (3), and the elastic connection component comprises a torsion spring bracket (6) and a torsion spring (7). The torsion spring bracket (6) is pin-connected between the L-shaped electric support rod (2) and the vehicle door connecting elbow (5), and a torsion spring mounting pin shaft (9) is arranged between the vehicle door connecting elbow (5) and the torsion spring bracket (6), and the torsion spring (7) is sleeved on the surface of the torsion spring mounting pin shaft (9).

2. According to claim 1, the novel L-shaped electric push rod torsion spring mechanism for a three-compartment vehicle is characterized in that: The tailstock of the L-shaped electric strut (2) is pin-connected with a vehicle body mounting seat (1) for supporting the L-shaped electric strut (2), and a pin shaft (10) is provided at the pin-connected position between the vehicle body mounting seat (1) and the L-shaped electric strut (2).

3. According to claim 2, the novel L-shaped electric push rod torsion spring mechanism for a three-compartment vehicle is characterized in that: The telescopic rod end of the L-shaped electric strut (2) is provided with a hinged end (11), and the hinged end (11) is pin-connected between the torsion spring bracket (6) and the telescopic rod end of the L-shaped electric strut (2).

4. According to claim 1, the novel L-shaped electric push rod torsion spring mechanism for a three-compartment vehicle is characterized in that: The torsion spring (7) is arranged between the side wall of the door connecting curved pipe (5) and the side wall of the torsion spring bracket (6), and torsion spring gaskets (8) are arranged at both ends of the torsion spring (7).

5. According to claim 1, the novel L-shaped electric push rod torsion spring mechanism for a three-compartment vehicle is characterized in that: The vehicle door connecting curved pipe (5) comprises a tailgate connecting end (13), a first curved pipe (14), a second curved pipe (15) and a pin-connecting end (16); one end of the tailgate connecting end (13) is connected to the first curved pipe (14) via a curved pipe, and the second curved pipe (15) is connected between the first curved pipe (14) and the pin-connecting end (16).

6. The novel L-shaped electric push rod torsion spring mechanism for a three-compartment vehicle according to claim 5 is characterized in that: One end of the tailgate connection end (13) is fixedly connected to a vehicle door mounting bracket (3), and the vehicle door mounting bracket (3) is fixedly connected to the vehicle door.

7. According to claim 5, the novel L-shaped electric push rod torsion spring mechanism for a three-compartment vehicle is characterized in that: The end of the pin-joined end (16) is pin-joined to a vehicle body bent pipe mounting seat (4), and a rotating shaft (12) is provided at the end of the vehicle body bent pipe mounting seat (4) and the pin-joined end (16).

Images