Automobile tailgate based on reduced turnover cylinder thrust

Abstract

The application relates to the technical field of automobile tailgates, and discloses an automobile tailgate based on reduction of the pushing force of a turnover cylinder, which comprises a bearing platform and a tailgate girder, the two sides of the tailgate girder are respectively hinged to the inner ends of the bearing platform through turnover cylinders, a lifting cylinder and a fixed-length rod are connected to one side of the tailgate girder, a buffer block is connected to the lower part of the outer end of the fixed-length rod, the buffer block has a recessed groove inwards and the recessed groove limits the rotation of the buffer block along the bolt; in the process that the turnover cylinder drives the bearing platform to perform a lifting action, the bearing platform rotates around the first pin shaft, and the buffer block is abutted and supported on the ground to provide part of the bearing capacity for the fixed-length rod; the buffer block is matched with the fixed-length rod through the recessed groove, the rotation of the buffer block can be limited, so that the buffer block is always kept unmoved, the buffer block does not need to overcome extra gravity and friction to work, the pushing force demand of the turnover cylinder is reduced, and the problem that the turnover cylinder in the automobile tailgate is subjected to excessive force in use is solved.

Description

Technical Field

[0001] This invention relates to the technical field of automobile tailgates, and more specifically, to automobile tailgates based on reducing the thrust of the tipping cylinder. Background Technology

[0002] A car tailgate, also known as a car lifting tailgate, car loading and unloading tailgate, lifting tailgate, hydraulic car tailgate, or truck tailgate, is a hydraulic lifting and loading / unloading device powered by the vehicle's battery, installed at the rear of trucks and various other vehicles.

[0003] In the prior art, the load-bearing platform in the tailgate of a car is controlled by a tilting cylinder to make the load-bearing platform tilt or raise. When the traditional load-bearing platform is on the ground, a buffer wheel is installed at the hinge point between the load-bearing platform and the tilting cylinder. The buffer wheel is used to assist the tilting cylinder in driving the load-bearing platform to raise. However, the force of this method is relatively large, which will affect the thrust requirement of the tilting cylinder. Summary of the Invention

[0004] The purpose of this invention is to provide a car tailgate based on reducing the thrust of the tipping cylinder, in order to solve the problem that the tipping cylinder in the car tailgate is subjected to excessive force during use in the prior art.

[0005] The present invention is implemented as follows: a car tailgate based on reducing the thrust of the tilting cylinder includes a support platform and a tailgate beam. The two sides of the tailgate beam are respectively hinged to the inner end of the support platform through the tilting cylinder. A lifting cylinder and a fixed length rod for driving the lifting of the support platform are connected to one side of the tailgate beam. The inner end of the lifting cylinder is hinged to one side of the tailgate beam, and the outer end of the lifting cylinder is hinged to the lower part of the outer end of the fixed length rod.

[0006] The upper part of the outer end of the fixed-length rod is connected to the upper part of the inner end of the bearing platform through a first pin. A buffer block is connected to the lower part of the outer end of the fixed-length rod. The bottom of the buffer block is at least partially exposed below the lower part of the outer end of the fixed-length rod. The buffer block and the lower part of the outer end of the fixed-length rod are connected through a pin. The buffer block has an inwardly recessed groove that restricts the rotation of the buffer block along the pin. The inner sidewall of the groove abuts against the outer sidewall of the lower part of the outer end of the fixed-length rod.

[0007] When the tilting cylinder drives the bearing platform on the ground to tilt upwards, the bearing platform rotates along the first pivot, and the buffer block does not move.

[0008] Furthermore, the inner end of the tilting cylinder is hinged to the tail plate beam via a mounting seat, and the outer end of the tilting cylinder is connected to the inner end of the bearing platform via a second pin, which is located below the first pin.

[0009] Furthermore, the buffer block is equipped with a micro switch that drives the lifting cylinder to stop working, and the micro switch is electrically connected to the lifting cylinder.

[0010] Furthermore, the bottom of the microswitch is exposed beneath the buffer block.

[0011] Furthermore, a hinge seat is provided on the lower part of the outer end of the fixed length rod. The hinge seat and the fixed length rod are connected through a pin. The hinge seat has an inwardly recessed mounting cavity. The outer end of the lifting cylinder is located in the mounting cavity, and the outer end of the lifting cylinder is connected to the hinge seat through a third pin.

[0012] Furthermore, the mounting cavity and the fixed-length rod are arranged longitudinally, and the lower part of the outer end of the fixed-length rod abuts against the top outer wall of the mounting cavity;

[0013] When the bottom of the buffer block abuts against the ground, the outer end of the fixed-length rod is spaced apart from the ground, and the inner end of the bearing platform is spaced apart from the ground.

[0014] Furthermore, the tail beam is provided with a lug, the upper part of which is hinged to the inner end of the fixed length rod, and the lower part of which is hinged to the inner end of the lifting cylinder, and the lifting cylinder is located below the fixed length rod.

[0015] Furthermore, a friction layer is provided on the bottom of the buffer block, and the friction layer extends along the length direction of the bottom of the buffer block.

[0016] Furthermore, the outer ends of the two fixed-length rods are connected by a connecting column, and the connecting column is provided with a plurality of support ropes. The plurality of support ropes are arranged at intervals along the length direction of the connecting column. The inner ends of the support ropes are connected to the connecting column, and the outer ends of the support ropes are connected to the bottom center of the bearing platform.

[0017] When the support platform is on the ground in a downward position, the distance between the outer end of the fixed-length rod and the bottom of the support platform is increased, so that after the multiple support ropes are straightened and tightened, the bottom of the inner end of the support platform abuts against the middle of the support ropes on the ground.

[0018] Furthermore, a protective sleeve is fitted around the outer periphery of the support rope, the protective sleeve extends and wraps around the support rope along its length, and the middle parts of the multiple support ropes are connected by a linkage belt.

[0019] When the support platform is on the ground in a downward position, the multiple support ropes are straightened and tightened, and the linkage belt abuts against the bottom of the support platform.

[0020] Compared with existing technologies ，The present invention provides a car tailgate based on reducing the thrust of the tilting cylinder. During the tilting cylinder driving the support platform to tilt upwards, the support platform rotates around the first pin shaft, while the buffer block abuts and supports on the ground, providing part of the load-bearing force for the fixed-length rod. The buffer block can restrict the rotation of the buffer block by using the groove to fit with the fixed-length rod, so that the buffer block always remains stationary without having to overcome additional gravity and friction. This reduces the thrust requirement of the tilting cylinder and solves the problem of excessive force on the tilting cylinder in the use of the car tailgate. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the automobile tailgate based on reducing the thrust of the tipping cylinder provided by the present invention;

[0022] Figure 2 This is a partial cross-sectional three-dimensional schematic diagram of the fixed-length rod and buffer block provided by the present invention;

[0023] Figure 3 This is a three-dimensional schematic diagram of the buffer block provided by the present invention;

[0024] Figure 4 This is a cross-sectional schematic diagram of a car tailgate based on reducing the thrust of the tipping cylinder provided by the present invention;

[0025] Figure 5 This is a schematic diagram of the structure of the buffer block provided by the present invention.

[0026] In the diagram: bearing platform 100, tail beam 200, fixed length rod 300, lifting cylinder 400, buffer block 500, tilting cylinder 600, mounting base 201, ear seat 202, first pin 301, hinge seat 302, mounting cavity 303, third pin 304, connecting column 305, support rope 306, linkage belt 307, groove 501, micro switch 502, friction layer 503, second pin 601. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0028] The implementation of the present invention will be described in detail below with reference to specific embodiments.

[0029] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this invention, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this invention. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0030] Reference Figure 1-5 The image shows a preferred embodiment of the present invention.

[0031] The tailgate based on the reduced thrust of the tilting cylinder 600 includes a support platform 100 and a tailgate beam 200. The two sides of the tailgate beam 200 are respectively hinged to the inner end of the support platform 100 through the tilting cylinder 600. A lifting cylinder 400 and a fixed length rod 300 for driving the support platform 100 to rise and fall are connected to one side of the tailgate beam 200. The inner end of the lifting cylinder 400 is hinged to one side of the tailgate beam 200, and the outer end of the lifting cylinder 400 is hinged to the lower part of the outer end of the fixed length rod 300.

[0032] The upper part of the outer end of the fixed length rod 300 is connected to the upper part of the inner end of the bearing platform 100 through a first pin 301. A buffer block 500 is connected to the lower part of the outer end of the fixed length rod 300. The bottom of the buffer block 500 is at least partially exposed below the lower part of the outer end of the fixed length rod 300. The buffer block 500 and the lower part of the outer end of the fixed length rod 300 are connected through a pin. The buffer block 500 has an inwardly recessed groove 501 that restricts the rotation of the buffer block 500 along the pin. The inner sidewall of the groove 501 abuts against the outer sidewall of the lower part of the outer end of the fixed length rod 300.

[0033] When the tilting cylinder 600 drives the bearing platform 100 on the ground to tilt up, the bearing platform 100 rotates along the first pin 301, and the buffer block 500 does not move.

[0034] The aforementioned car tailgate based on reducing the thrust of the tilting cylinder 600, during the tilting cylinder 600 driving the support platform 100 to tilt upwards, the support platform 100 rotates around the first pin 301, while the buffer block 500 abuts and supports on the ground, providing part of the load-bearing force for the fixed-length rod 300. The buffer block 500, by using the groove 501 to fit with the fixed-length rod 300, can limit the rotation of the buffer block 500, thus keeping the buffer block 500 stationary and eliminating the need to overcome additional gravity and friction, thereby reducing the thrust requirement of the tilting cylinder 600 and solving the problem of excessive force on the tilting cylinder 600 in the use of the car tailgate.

[0035] Installing the buffer block 500 on the fixed-length rod 300 can prevent frictional resistance between the buffer block 500 and the ground when the tilting cylinder 600 drives the bearing platform 100 to tilt upwards. It can also avoid increasing the thrust requirement of the tilting cylinder 600 and increase the service life of the buffer block 500.

[0036] The buffer block 500 can be a cylindrical, square, or trapezoidal structure; because the buffer block 500 has no rotational motion, it slows down wear and thus increases its lifespan, thereby reducing the roughness requirements of the selected contact surface and eliminating the need to consider lubrication requirements, etc.

[0037] The inner end of the tilting cylinder 600 is hinged to the tail plate beam 200 through the mounting base 201, and the outer end of the tilting cylinder 600 is connected to the inner end of the bearing platform 100 through the second pin 601, which is located below the first pin 301. This ensures the stable swing of the tilting cylinder 600, and the tilting cylinder 600 drives the opening and closing action of the bearing platform 100 through the second pin 601, which ensures its stable operation.

[0038] As the carrying platform 100 is tilted upwards, the axis between the second pin 601 and the first pin 301 will change from inclined to vertical. In the traditional structure, since the buffer wheel is always in contact with the ground, the distance cannot be compressed, which will cause the first pin 301 to move upwards, thereby raising the carrying platform 100 and the goods. The tilting cylinder 600 needs to do extra work to overcome gravity, which will increase the pushing resistance of the tilting cylinder 600 on the carrying platform 100. In addition, the rolling friction of the buffer wheel with the ground will also increase the pushing resistance of the tilting cylinder 600 on the carrying platform 100.

[0039] In this structure, because the buffer block 500 abuts against the ground, the second pin 601 is suspended below. When the axis between the second pin 601 and the first pin 301 changes from inclined to vertical, the second pin 601 moves downward while the position of the first pin 301 remains unchanged. This not only reduces the thrust of the tilting cylinder 600, but also prevents the length of the lifting cylinder 400 from changing, thus reducing the possibility of damage.

[0040] Conversely, if the carrying platform 100 is in a horizontal state, the lifting cylinder 400 is locked in length when the buffer wheel is in contact with the ground. When the carrying platform 100 moves downward, the buffer wheel will be suspended in the air. During loading and unloading, the lifting cylinder 400 will be subjected to a large impact load, which can easily cause damage to it.

[0041] In this embodiment, the buffer block 500 is provided with a micro switch 502 to drive the lifting cylinder 400 to stop working, and the micro switch 502 is electrically connected to the lifting cylinder 400.

[0042] When the lifting cylinder 400 drives the buffer block 500 to contact the ground, the micro switch 502 will touch the ground first. When the micro switch 502 sends a signal to the lifting cylinder 400, the lifting cylinder 400 will stop shortening, thus preventing the fixed length rod 300 from continuing to descend and pressing against the buffer block 500 from both directions with the ground, causing damage.

[0043] The bottom of the micro switch 502 is exposed below the buffer block 500, so that when the micro switch 502 sends a stop signal to the lifting cylinder 400, the lifting cylinder 400 can also stop continuing to shorten when the buffer block 500 touches the ground.

[0044] In this embodiment, a hinge seat 302 is provided on the lower part of the outer end of the fixed length rod 300. The hinge seat 302 and the fixed length rod 300 are connected by a pin. The hinge seat 302 is provided with an inwardly recessed mounting cavity 303. The outer end of the lifting cylinder 400 is located in the mounting cavity 303, and the outer end of the lifting cylinder 400 is connected to the hinge seat 302 by a third pin 304.

[0045] The fixed-length rod 300 is installed with the lifting cylinder 400 via the hinge seat 302. The lifting cylinder 400 uses the third pin 304 to drive the hinge seat 302 and the fixed-length rod 300 to swing. The hinge seat 302 is installed through the mounting cavity 303 for the lifting cylinder 400 to be inserted, which facilitates the rotation of the lifting cylinder 400 and the fixed-length rod 300.

[0046] In this embodiment, the mounting cavity 303 and the fixed-length rod 300 are arranged longitudinally, and the lower part of the outer end of the fixed-length rod 300 abuts against the top outer wall of the mounting cavity 303; in this way, even if the third pin 304 breaks, the end of the lifting cylinder 400 inserted into the mounting cavity 303 will not fall directly down, because as long as the lifting cylinder 400 is still inserted at an angle in the mounting cavity 303, the lifting cylinder 400 can drive the fixed-length rod 300 to swing upward through the mounting cavity 303;

[0047] When the bottom of the buffer block 500 abuts against the ground, the outer end of the fixed-length rod 300 is spaced apart from the ground, and the inner end of the bearing platform 100 is spaced apart from the ground. In this way, the frictional resistance between the buffer block 500 and the ground can be avoided during the process of the tilting cylinder 600 driving the bearing platform 100 to make a head-up or head-down movement, which would affect the thrust requirement of the tilting cylinder 600.

[0048] In this embodiment, the tail beam 200 is provided with a lug 202. The upper part of the lug 202 is hinged to the inner end of the fixed length rod 300, and the lower part of the lug 202 is hinged to the inner end of the lifting cylinder 400. The lifting cylinder 400 is located below the fixed length rod 300.

[0049] The tail beam 200 facilitates the installation, disassembly, and maintenance of the lifting cylinder 400 and the fixed-length rod 300 via the lug 202; the function of the lifting cylinder 400 is to facilitate the work done on the fixed-length rod 300, so that the fixed-length rod 300 can rotate on the lug 202.

[0050] A friction layer 503 is provided on the bottom of the buffer block 500, and the friction layer 503 extends along the length of the bottom of the buffer block 500. In this way, the buffer block 500 can increase the frictional resistance with the ground through the friction layer 503, thereby increasing the stability of the fixed length rod 300 when the tilting cylinder 600 drives the bearing platform 100.

[0051] In this embodiment, the outer ends of the two fixed-length rods 300 are connected by a connecting column 305. The connecting column 305 is provided with a plurality of support ropes 306. The plurality of support ropes 306 are arranged at intervals along the length direction of the connecting column 305. The inner end of the support rope 306 is connected to the connecting column 305, and the outer end of the support rope 306 is connected to the bottom center of the bearing platform 100.

[0052] When the bearing platform 100 is on the ground in a downward position, the distance between the outer end of the fixed-length rod 300 and the bottom of the bearing platform 100 is increased, so that after the multiple support ropes 306 are straightened and tightened, the bottom of the inner end of the bearing platform 100 abuts against the middle of the support ropes 306 on the ground.

[0053] The two fixed-length rods 300 are connected by a connecting column 305 to increase the swinging operation of the fixed-length rods 300. The connecting column 305 is connected to the bearing platform 100 through multiple support ropes 306 so that when the bearing platform 100 is in the downward position, when goods are unloaded from the bearing platform 100, the bottom of the bearing platform 100 can share its bearing force through multiple support ropes 306, thereby increasing the force distribution between the bearing platform 100 and the fixed-length rods 300.

[0054] In this embodiment, a protective sleeve is provided on the outer periphery of the support rope 306. The protective sleeve extends and surrounds the support rope 306 along its length. The middle parts of the multiple support ropes 306 are connected by a linkage belt 307.

[0055] When the support platform 100 is on the ground in a downward position, the multiple support ropes 306 are straightened and tightened, and the linkage belt 307 abuts against the bottom of the support platform 100.

[0056] Multiple support ropes 306 are connected by a linkage belt 307, thereby increasing the connection between the multiple support ropes 306. The linkage belt 307 is then used to increase the contact area with the bottom of the bearing platform 100, allowing the multiple support ropes 306 to provide bearing capacity to the bearing platform 100 more stably.

[0057] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A car tailgate based on reducing the thrust of the tipping cylinder, characterized in that, It includes a support platform and a tail beam. The two sides of the tail beam are respectively hinged to the inner end of the support platform through a tilting cylinder. A lifting cylinder and a fixed length rod for driving the support platform to rise and fall are connected to one side of the tail beam. The inner end of the lifting cylinder is hinged to one side of the tail beam, and the outer end of the lifting cylinder is hinged to the lower part of the outer end of the fixed length rod. The upper part of the outer end of the fixed-length rod is connected to the upper part of the inner end of the bearing platform through a first pin. A buffer block is connected to the lower part of the outer end of the fixed-length rod. The bottom of the buffer block is at least partially exposed below the lower part of the outer end of the fixed-length rod. The buffer block and the lower part of the outer end of the fixed-length rod are connected through a pin. The buffer block has an inwardly recessed groove that restricts the rotation of the buffer block along the pin. The inner sidewall of the groove abuts against the outer sidewall of the lower part of the outer end of the fixed-length rod. When the tilting cylinder drives the bearing platform on the ground to tilt upwards, the bearing platform rotates along the first pivot, and the buffer block does not move.

2. The automobile tailgate based on reducing the thrust of the tipping cylinder as described in claim 1, characterized in that, The inner end of the tilting cylinder is hinged to the tail plate beam through a mounting seat, and the outer end of the tilting cylinder is connected to the inner end of the bearing platform through a second pin, which is located below the first pin.

3. The automobile tailgate based on reducing the thrust of the tipping cylinder as described in claim 2, characterized in that, The buffer block is equipped with a micro switch that drives the lifting cylinder to stop working, and the micro switch is electrically connected to the lifting cylinder.

4. The automobile tailgate based on reducing the thrust of the tipping cylinder as described in claim 3, characterized in that, The bottom of the micro switch is exposed beneath the buffer block.

5. The automobile tailgate based on reducing the thrust of the tipping cylinder as described in any one of claims 1 to 4, characterized in that, A hinge seat is provided on the lower part of the outer end of the fixed length rod. The hinge seat and the fixed length rod are connected through a pin. The hinge seat has an inwardly recessed mounting cavity. The outer end of the lifting cylinder is located in the mounting cavity, and the outer end of the lifting cylinder is connected to the hinge seat through a third pin.

6. The automobile tailgate based on reducing the thrust of the tipping cylinder as described in claim 5, characterized in that, The mounting cavity and the fixed-length rod are arranged longitudinally, and the lower part of the outer end of the fixed-length rod abuts against the top outer wall of the mounting cavity; When the bottom of the buffer block abuts against the ground, the outer end of the fixed-length rod is spaced apart from the ground, and the inner end of the bearing platform is spaced apart from the ground.

7. The automobile tailgate based on reducing the thrust of the tipping cylinder as described in any one of claims 1 to 4, characterized in that, The tail section beam is provided with an ear seat. The upper part of the ear seat is hinged to the inner end of the fixed length rod, and the lower part of the ear seat is hinged to the inner end of the lifting cylinder. The lifting cylinder is located below the fixed length rod.

8. The automobile tailgate based on reducing the thrust of the tipping cylinder as described in any one of claims 1 to 4, characterized in that, A friction layer is provided on the bottom of the buffer block, and the friction layer extends along the length of the bottom of the buffer block.

9. The automobile tailgate based on reducing the thrust of the tipping cylinder as described in any one of claims 1 to 4, characterized in that, The outer ends of the two fixed-length rods are connected by a connecting column. The connecting column is provided with multiple support ropes, which are arranged at intervals along the length of the connecting column. The inner ends of the support ropes are connected to the connecting column, and the outer ends of the support ropes are connected to the bottom center of the bearing platform. When the support platform is on the ground in a downward position, the distance between the outer end of the fixed-length rod and the bottom of the support platform is increased, so that after the multiple support ropes are straightened and tightened, the bottom of the inner end of the support platform abuts against the middle of the support ropes on the ground.

10. The automobile tailgate based on reducing the thrust of the tipping cylinder as described in claim 9, characterized in that, A protective sleeve is fitted around the outer periphery of the support rope, and the protective sleeve extends and wraps around the support rope along its length. The middle parts of the multiple support ropes are connected by a linkage belt. When the support platform is on the ground in a downward position, the multiple support ropes are straightened and tightened, and the linkage belt abuts against the bottom of the support platform.

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