Weighing anti-pinch electric tailboard

Abstract

The invention provides a weighing anti-pinch electric tailboard, and belongs to the technical field of automobile accessories. The weighing anti-pinch type electric tail plate comprises a main beam, a tail plate body, a lifting frame body and an electric push rod. The weighing sensor is installed at the end, hinged to the tail plate, of the lifting arm in the lifting frame body connecting the main beam and the tail plate, the transition plate is installed on the weighing sensor, and at the moment, the transition plate is located between the tail of the compartment and the tail plate and located on the side, close to the compartment, of the tail plate all the time, so that when goods are transferred between the compartment and the tail plate, the goods are not prone to falling off. Goods can be weighed when passing through the transition plate, in addition, when the tail plate is closed, if foreign matter is left on the inclined tail plate, the foreign matter can slide down to the transition plate along the tail plate, foreign matter detection is achieved through the weighing sensor, the foreign matter is prevented from being clamped when the tail plate is closed, the anti-pinch purpose is achieved, it is ensured that the structure simultaneously reflects the weighing function and the anti-pinch function, the structure is simple, and the practicability is high. The structure utilization rate is high, and manufacturing and using cost is low.

Description

Technical Field

[0001] The invention relates to the technical field of automobile accessories, in particular to a weighing anti-pinch electric tailgate. Background Art

[0002] As a means of transportation in the cargo transportation system, freight trucks are the absolute main force of road transportation and are widely used. Therefore, improving the convenience of using freight trucks has become the direction of industry development.

[0003] At present, in the existing freight trucks on the market, it is usually chosen to install a tailgate structure at the rear of the vehicle body, which facilitates the loading and unloading of goods. The existing tailgate structures include hydraulic tailgates and electric tailgates. Since the hydraulic tailgate needs to be equipped with a hydraulic system and needs to be connected by pipes, it is not only complex in structure, but also has the problem of pipe leakage in the later stage. The electric tailgate only needs to power the electric push rod through the wire. It has a simple structure and will not have leakage problems, and the cost is lower. Although the existing electric tailgate can meet the needs of cargo loading and unloading and solve the structural complexity and later leakage problems of the existing tailgate structure, due to the load limit of freight trucks and the inventory and warehousing of loaded and unloaded goods, the goods need to be weighed when loading and unloading. That is, the industry usually installs a weighing structure on the tailgate to realize the weighing of the tailgate structure. For example, the patent CN221718391U discloses a car weighing tailgate, which has a cavity that passes through on both sides in the tailgate body, and the two sides of the tailgate body are connected by bolts with side panels, and the side panels are covered on the tailgate. Partitions are provided in the cavities on the upper and lower surfaces of the main body ends, and through holes are formed between adjacent partitions. Mounting plates are connected to the two through holes by screws. At the same time, two weighing sensors are fixed on the mounting plates. When the goods pass through the tailgate body or the mounting plates, they are weighed by the weighing sensors. Although this can meet the weighing requirements, it requires cutting the tailgate body and providing a variety of matching structures on the tailgate body. Not only is the structure complex, the manufacturing and use costs are high, but it can only achieve weighing and cannot reflect other functions. It has a single function and a low structural utilization rate. Summary of the Invention

[0004] In response to the above-mentioned problems existing in the prior art, the present invention aims to provide a weighing anti-pinch electric tailgate, in which a transition plate is provided between the rear end of the car and the tailgate, a weighing sensor is installed at the bottom of the transition plate, and at the same time, the weighing sensor is installed on the lifting arm of the lifting frame and hinged on one end of the tailgate, ensuring that the transition plate with the weighing sensor is always at the end of the tailgate close to the rear end of the car, so that when loading and unloading goods through the tailgate, the goods will be weighed when passing through the transition plate, and when the tailgate is flipped and closed, if foreign objects are accidentally placed on the tailgate, they will slide along the tailgate to the transition plate, and the changes will be detected by the weighing sensor, thereby determining the presence of foreign objects, thereby achieving the anti-pinch purpose when the tailgate is closed, and meeting the weighing anti-pinch requirements at the same time, with a simple structure, high structural utilization rate, and low manufacturing and use costs.

[0005] The specific technical solutions are as follows: A weighing anti-pinch electric tailgate comprises a main beam, a tailgate, a lifting frame and an electric push rod. The main beam is mounted on a frame at the rear of a vehicle compartment. One end of the lifting frame is connected to the main beam, and the other end of the lifting frame is connected to one end of the tailgate. The electric push rod is mounted on the lifting frame and has the following characteristics: the lifting frame comprises a lifting arm, one end of which is hinged to one end of the tailgate, and a transition plate, which is spaced apart at one end of the tailgate near the lifting arm. A weighing sensor is mounted on the bottom of the transition plate, and the weighing sensor is mounted on one end of the lifting arm hinged to the tailgate.

[0006] The above-mentioned weighing anti-pinch electric tailgate, wherein two groups of electric push rods are arranged between the tailgate and the main beam, the two groups of electric push rods correspond to the two sides of the tailgate respectively, each electric push rod corresponds to a drive motor, the two drive motors are installed between the two electric push rods, and the drive motor of each electric push rod is arranged on the side of the main beam close to the tailgate.

[0007] In the above-mentioned weighing anti-pinch electric tailgate, a gearbox is provided between each electric push rod and the corresponding drive motor, and the output shafts of the gearboxes of the two electric push rods are located on the same straight line.

[0008] In the above-mentioned weighing anti-pinch electric tailgate, the input shaft of each electric push rod is dynamically connected to the output shaft of the corresponding gearbox, and the input shaft of each electric push rod, which is away from the end connected to the gearbox, extends outside the housing of the electric push rod.

[0009] The above-mentioned weighing anti-pinch electric tailgate is provided with a reinforced lock on the top of the rear of the carriage. The reinforced lock is a magnetic lock. The reinforced lock has a structure that is magnetized when the power is off and demagnetized when the power is on.

[0010] In the above-mentioned weighing anti-pinch electric tail lift, a detection sensor is provided at the bottom of the tail lift, and the detection sensor is located at the end of the tail lift away from the lifting frame.

[0011] In the above-mentioned weighing anti-pinch electric tailgate, the transition plate is a strip-shaped square tube structure.

[0012] In the above-mentioned weighing anti-pinch electric tailgate, a support base is provided at the bottom of the weighing sensor, and the support base is welded to one end of the lifting arm hinged to the tailgate.

[0013] The positive effects of the above technical solution are: The above-mentioned weighing and anti-pinch electric tailgate is achieved by installing a weighing sensor at one end of the lifting arm in the lifting frame connecting the main beam and the tailgate close to the tailgate, and installing a transition plate on the load cell, so that the transition plate can be located at the end of the tailgate close to the car body, and can fill the gap between the tailgate and the rear end of the car body, so as to facilitate the transfer of goods between the car body and the tailgate, and the transition plate can be used for weighing during the loading and unloading process of goods. In addition, when the tailgate is flipped and closed, if there is goods accidentally left on the tailgate, the goods will slide down along the inclined surface of the tailgate to the transition plate, and the pressure will be detected by the weighing sensor to determine whether there is foreign matter falling into the gap between the tailgate and the rear end of the car body, thereby achieving the purpose of anti-pinch. The transition plate with the weighing sensor can meet the use requirements of weighing and anti-pinch at the same time, and there is no need to set up a corresponding weighing anti-pinch structure. The structure is simple, the structural utilization rate is higher, and the manufacturing and use costs are reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A structural diagram of an embodiment of a weighing anti-pinch electric tailgate according to the present invention from one perspective; Figure 2 A structural diagram of an embodiment of a weighing anti-pinch electric tailgate according to the present invention from another perspective; Figure 3 A structural diagram of an embodiment of a weighing anti-pinch electric tailgate according to the present invention from another perspective; Figure 4 for Figure 3 Enlarged view of part A.

[0015] In the attached figure: 1. Carriage; 2. Main beam; 3. Tail plate; 4. Lifting frame; 41. Lifting arm; 5. Electric push rod; 51. Drive motor; 52. Gearbox; 53. Input shaft of electric push rod; 521. Output shaft of gearbox; 6. Transition plate; 61. Weighing sensor; 62. Support seat; 7. Reinforcement lock; 8. Detection sensor. DETAILED DESCRIPTION

[0016] In order to make the technical means, creative features, objectives and effects of the present invention easier to understand, the following embodiments are combined with the attached Figure 1 To the attached Figure 4 The technical solution provided by the present invention is described in detail, but the following content is not intended to limit the present invention.

[0017] Figure 1 A structural diagram of an embodiment of a weighing anti-pinch electric tailgate according to the present invention from one perspective; Figure 2 A structural diagram of an embodiment of a weighing anti-pinch electric tailgate according to the present invention from another perspective; Figure 3 This is a structural diagram of another perspective of an embodiment of a weighing anti-pinch electric tailgate of the present invention. Figure 1 、 Figure 2 as well as Figure 3 As shown, the weighing, anti-pinch electric tail lift provided in this embodiment includes: a main beam 2, a tail lift 3, a lifting frame 4, and an electric push rod 5. The main beam 2 is mounted on the frame at the rear of the vehicle compartment 1, ensuring stable installation of the electric tail lift 3 at the rear of the compartment 1. In addition, one end of the lifting frame 4 is connected to the main beam 2, and the other end of the lifting frame 4 is connected to one end of the tail lift 3. In other words, the tail lift 3 is mounted on the main beam 2 via the lifting frame, thus ensuring installation of the tail lift 3 at the rear of the vehicle compartment 1 and enabling loading and unloading of cargo in the compartment 1. The electric push rod 5 is mounted on the lifting frame 4, providing power for the lifting frame 4, thereby enabling the movement of the tail lift 3 to meet cargo loading and unloading requirements.

[0018] Specifically, the lifting frame 4 includes a lifting arm 41, one end of which is hinged to one end of the tailgate 3, and a transition plate 6, which is spaced apart from the end of the tailgate 3 near the lifting arm 41, so that the transition plate 6 and the tailgate 3 can move relative to each other, providing conditions for subsequent weighing and anti-pinch detection through the transition plate 6. In addition, a weighing sensor 61 is installed at the bottom of the transition plate 6, and the weighing sensor 61 is installed on the end of the lifting arm 41 hinged to the tailgate 3. That is, the lifting arm 41 provides a mounting carrier for the weighing sensor 61, thereby supporting the transition plate 6 and ensuring that the transition plate 6 can always be at the end of the tailgate 3 near the rear of the car body 1. When cargo is subsequently loaded and unloaded through the tailgate 3, when the cart containing the cargo passes through the transition plate 6, the weighing sensor 61 on the transition plate 6 can sense the weight change, thereby weighing the passing cargo and meeting the weighing requirements. In addition, when the tailgate 3 is closed, it flips upward to an inclined state. At this time, if there is cargo accidentally left on the tailgate 3, the cargo will slide down along the tailgate 3 under its own weight and reach the transition plate 6. At this time, the weighing sensor 61 on the transition plate 6 can also sense the weight change, preventing the cargo from being caught in the gap between the rear end of the car 1 and the tailgate 3 in the event of an accident. This improves safety and meets the weighing anti-pinch requirements. Moreover, no matter how the cargo moves on the tailgate 3, it will eventually move to the transition plate 6, ensuring that more comprehensive anti-pinch detection can be achieved. It is worth noting that the transition plate 6 is a long strip structure, and the length direction of the transition plate 6 is consistent with the width direction of the vehicle or the tailgate 3, which can meet the installation requirements of being arranged in the gap between the rear end of the car 1 and the tailgate 3. In addition, because the transition plate 6 itself is an elongated structure and is arranged in the gap between the rear end of the car body 1 and the tailgate 3, the support surface of the transition plate 6 is relatively small, which cannot simultaneously meet the requirements of fully placing the cargo on it. Therefore, this embodiment includes, but is not limited to, using the split-axis weighing method commonly used in the weighing field to weigh the cargo passing through the transition plate 6 twice to meet the weighing requirements. Furthermore, the structure of the existing electric tailgate 3 is fully utilized to achieve weighing and anti-clamping, eliminating the need for separate weighing and anti-clamping related structures, resulting in a simpler structure, higher structural utilization, and lower costs. Furthermore, when the tailgate 3 is flipped and raised by the action of the lifting frame 4, during the lifting process of the tailgate 3, the transition plate 6 on the lifting arm 41 installed in the lifting frame 4 can flip relative to the tailgate 3. At this time, after the transition plate 6 flips, it forms a barrier at the end of the tailgate 3 near the main beam 2, which can effectively prevent the cargo on the tailgate 3 from sliding, and the structural design is more reasonable.

[0019] More specifically, two sets of electric push rods 5 are disposed between the tailgate 3 and the main beam 2. The two sets of electric push rods 5 correspond to either side of the tailgate 3, respectively. This provides a corresponding power drive structure on both sides of the tailgate 3, ensuring that the tailgate 3 is subjected to more uniform force, enabling smooth lifting and flipping, and a more rational structural design. Furthermore, each electric push rod 5 corresponds to a drive motor 51. In this case, both drive motors 51 are mounted between the two electric push rods 5. Furthermore, the drive motor 51 of each electric push rod 5 is disposed on a side of the main beam 2 near the tailgate 3, thereby achieving an inboard arrangement of the drive motor 51. Compared to conventional electric tailgates 3 in which the drive motor 51 of the electric push rod 5 is mounted at the bottom of the electric push rod 5, this ensures greater ground clearance between the drive motor 51 and the ground after the tailgate 3 is lifted to the top, achieving rational use of space and ensuring safety and operability.

[0020] More specifically, a gearbox 52 is provided between each electric push rod 5 and the corresponding drive motor 51. The gearbox 52 achieves high torque output, ensuring smooth movement of the tailgate 3 and ensuring the reliability of the tailgate 3's movement. Furthermore, the output shafts 521 of the gearboxes of the two electric push rods 5 are located on the same straight line. Preferably, the same straight line on which the output shafts 521 of the two gearboxes are located is parallel to the main beam 2, ensuring that the output shafts 521 of the gearboxes of the two electric push rods 5 are aligned. This allows for subsequent use of a single drive motor 51 output by connecting the output shafts 521 of the two gearboxes with a connecting rod, and either connecting one gearbox 52 to the power of the single drive motor 51 or connecting the connecting rod to the power of the single drive motor 51, thereby adapting to a single-motor output scenario. Furthermore, the opposing ends of the output shafts 521 of the two gearboxes extend outside the gearbox 52, facilitating the connection of the output shafts 521 of the two gearboxes via the connecting rod, resulting in a more rational structural design.

[0021] Figure 4 for Figure 3 An enlarged view of part A in the figure. Figures 1 to 4 As shown, the input shaft 53 of each electric push rod is connected to the output shaft 521 of the corresponding gearbox to ensure that the gearbox 52 can drive the corresponding electric push rod 5 to move. At this time, the end of the input shaft 53 of each electric push rod that is away from the gearbox 52 extends outside the housing of the electric push rod 5, so that when an unexpected situation such as power failure or damage of the subsequent drive motor 51 occurs, the operator can manually rotate the input shaft 53 of the electric push rod away from the end connected to the gearbox 52 to achieve manual drive of the electric push rod 5, still meeting the needs of the tailgate 3 to move, and realizing emergency treatment. Preferably, the end of the electric push rod 5 that is away from the gearbox 52 is an emergency shaft head. In this case, the emergency shaft head is provided with spline teeth, which makes it easier for the operator to use a spline sleeve wrench to rotate the input shaft, making the operation more convenient.

[0022] More specifically, a reinforced lock 7 is provided at the top of the rear end of the carriage 1. The reinforced lock 7 is a magnetic lock that assists in locking the closed tailgate 3, preventing the tailgate 3 from automatically sliding down due to the retraction of the electric push rod 5 after being closed for a long time, thereby improving safety. It is worth noting that the reinforced lock 7 is a structure that is magnetized when powered off and demagnetized when powered on, realizing the linkage between the reinforced lock 7 and the drive motor 51 of the electric push rod 5. That is, when the tailgate 3 needs to be operated by the electric push rod 5, the drive motor 51 corresponding to the electric push rod 5 is energized. At this time, the reinforced lock 7 is also energized and demagnetized, releasing the restriction of the reinforced lock 7 on the tailgate 3, allowing the tailgate 3 to move under the action of the electric push rod 5. When the tailgate 3 is in the closed state and the electric push rod 5 is not required to be operated, the drive motor 51 corresponding to the electric push rod 5 is deenergized. At this time, the reinforced lock 7 is also deenergized and generates magnetism, allowing the reinforced lock 7 to attract the tailgate 3 and prevent it from sliding down. This achieves linkage with the electric push rod 5 while ensuring safety, and more reasonable control.

[0023] More specifically, a detection sensor 8 is provided at the bottom of the tailgate 3, which can detect objects within its detection range. Preferably, the detection sensor 8 is located at the end of the tailgate 3 facing away from the lifting frame 4. The detection sensor 8 includes, but is not limited to, radar, infrared, or ultrasonic sensors. Conventional commercially available monitoring sensors are mature in technology and can ensure accurate monitoring at a low cost. Furthermore, when the tailgate 3 is flipped, deployed, or raised and lowered, the detection sensor 8 can monitor the area below and behind the tailgate 3 to detect the presence of living creatures and goods, preventing potential collisions during the movement of the tailgate 3 and improving safety.

[0024] More specifically, the transition plate 6 used for weighing and anti-pinch is a strip square tube structure, which can be directly processed using existing square tubes on the market. It can not only meet the installation requirement that the transition plate 6 has a certain length to adapt to the width direction of the tailgate 3, but also reduce the weight of the transition plate 6 itself, thereby reducing the total weight of the electric tailgate 3, reducing the burden on the electric push rod 5 and the vehicle, and can also facilitate processing and manufacturing, reducing manufacturing costs.

[0025] More specifically, a support seat 62 is also provided at the bottom of the weighing sensor 61 at the bottom of the transition plate 6, that is, the weighing sensor 61 is installed on the support seat 62, and the support seat 62 provides support for the weighing sensor 61. At this time, the support seat 62 is welded to the lifting arm 41 hinged to one end of the tail plate 3, that is, the weighing sensor 61 is stably installed on the lifting arm 41 through the support seat 62, and the stable installation of the transition plate 6 on the lifting arm 41 is also achieved.

[0026] The weighing anti-pinch electric tailgate provided in this embodiment includes a main beam 2, a tailgate 3, a lifting frame 4 and an electric push rod 5; a weighing sensor 61 is installed on one end of the tailgate 3 by hingedly connecting the lifting arm 41 in the lifting frame 4 connecting the main beam 2 and the tailgate 3, and the transition plate 6 is installed on the weighing sensor 61. At this time, the transition plate 6 is located between the rear end of the car 1 and the tailgate 3 and is always located on the side of the tailgate 3 close to the car 1, so that when the goods are transferred between the car 1 and the tailgate 3, the goods can be weighed when passing through the transition plate 6, and when the tailgate 3 is closed, if there is foreign matter left on the inclined tailgate 3, the foreign matter will slide down the tailgate 3 to the transition plate 6, and the foreign matter will be detected by the weighing sensor 61 to prevent the tailgate 3 from clamping foreign matter when it is closed, thereby achieving the purpose of anti-pinching, ensuring that one structure simultaneously embodies weighing and anti-pinch functions, with a simple structure, high structural utilization rate, and low manufacturing and use costs.

[0027] The above are only preferred embodiments of the present invention and do not limit the implementation mode and protection scope of the present invention. For those skilled in the art, it should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A weighing anti-pinch electric tail lift, comprising a main beam, a tail lift, a lifting frame, and an electric push rod, wherein the main beam is mounted on a frame at the rear of a vehicle compartment, one end of the lifting frame is connected to the main beam, and the other end of the lifting frame is connected to one end of the tail lift, and the electric push rod is mounted on the lifting frame, characterized in that: The lifting frame includes a lifting arm, one end of which is hinged to one end of the tail plate, and a transition plate, which is spaced apart at one end of the tail plate close to the lifting arm. A weighing sensor is installed at the bottom of the transition plate, and the weighing sensor is installed on the end of the lifting arm hinged to the tail plate.

2. The weighing anti-pinch electric tailgate according to claim 1 is characterized in that: Two groups of electric push rods are arranged between the tail plate and the main beam, and the two groups of electric push rods correspond to the two sides of the tail plate respectively. Each of the electric push rods corresponds to a drive motor, and the two drive motors are installed between the two electric push rods. Moreover, the drive motor of each electric push rod is arranged on the side of the main beam close to the tail plate.

3. The weighing anti-pinch electric tailgate according to claim 2 is characterized in that: A gearbox is provided between each of the electric push rods and the corresponding drive motor, and the output shafts of the gearboxes of the two electric push rods are located on the same straight line.

4. The weighing anti-pinch electric tailgate according to claim 3 is characterized in that: The input shaft of each electric push rod is dynamically connected to the output shaft of the corresponding gearbox, and the end of the input shaft of each electric push rod that is away from the gearbox is extended to the outside of the housing of the electric push rod.

5. The weighing anti-pinch electric tailgate according to claim 1, characterized in that: A reinforced lock is provided on the top of the rear part of the carriage. The reinforced lock is a magnetic lock. The reinforced lock has a structure that magnetizes when the power is off and demagnetizes when the power is on.

6. The weighing anti-pinch electric tailgate according to claim 1, characterized in that: A detection sensor is provided at the bottom of the tail plate, and the detection sensor is located at an end of the tail plate away from the lifting frame.

7. The weighing anti-pinch electric tailgate according to claim 1, characterized in that: The transition plate is a strip-shaped square tube structure.

8. The weighing anti-pinch electric tailgate according to claim 1, characterized in that: A support base is provided at the bottom of the weighing sensor, and the support base is welded to one end of the lifting arm hinged to the tail plate.

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