Lifting safety structure and system

Abstract

The invention relates to the technical field of automobiles, in particular to a lifting safety structure and system. The motor home jacking structure can be applied to a motor home jacking structure and specifically comprises the steps that when an upper guide rail ascends, a sliding block slides on a lower guide rail, so that a limiting piece makes contact with a motion stopping block, a plug pin leaves the limiting state, then the plug pin falls down and is inserted into a pin hole, mechanical locking of the sliding block is achieved, and mechanical fixing of the jacking structure is completed; and the safety of the touring car jacking structure is improved. In addition, when the lifting mechanism is mechanically locked, the power module stops supplying power to the first connecting rod, it can be further ensured that the first connecting rod does not stretch out and draw back electrically, and it is further ensured that the touring car jacking mechanism does not suddenly descend or fall down due to misoperation of a user or vehicle system faults, and safety accidents are avoided; according to the implementation mode, mechanical locking of the safety plug pin and circuit control of the electric control unit are combined, and the safety and stability of the touring car jacking structure are improved from two aspects.

Description

Technical Field

[0001] The present invention relates to the field of automobile technology, and in particular to a lifting safety structure and system. Background Art

[0002] Currently, there are pop-up RVs on the market that can raise and lower their roofs. As a vehicle that combines living and travel functions, the safety of the roof mechanism of a pop-up RV is directly related to the safety of users' lives and property, as well as the reliability of the vehicle. Existing pop-up RV roof lifting mechanisms lack necessary protection measures. In the event of user error or vehicle system failure, the roof and lifting mechanism may automatically lower. This sudden situation not only causes structural deformation and mechanical damage to the lifting mechanism, but also may cause serious personal injury to occupants, leading to safety accidents. Summary of the Invention

[0003] The purpose of the present invention is to provide a lifting safety structure and system to improve the safety of the RV roof lifting structure and solve the above technical problems.

[0004] In order to achieve the above-mentioned purpose, the first aspect of the present invention provides a lifting safety structure, including a scissors-type lifting mechanism, an upper guide rail and a lower guide rail; the scissors-type lifting mechanism includes a first connecting rod and a second connecting rod; one end of the first connecting rod is axially connected to one end of the lower guide rail, and the other end of the first connecting rod is slidably connected to the upper guide rail; one end of the second connecting rod is slidably connected to the lower guide rail, and the other end of the second connecting rod is axially connected to one end of the upper guide rail; the first connecting rod and the second connecting rod are axially connected, and also include a slider, a latch and a limit member, wherein: the slider is respectively connected to the latch and the limit member The cam is secured to the lower guide rail when the locking cam is engaged and the locking cam is engaged with the lower guide rail, and the cam is secured to the lower guide rail when the locking cam is engaged.

[0005] The above-mentioned lifting safety structure can be applied to a RV roof lifting structure, wherein the upper guide rail can be connected to the roof so that the roof can be lifted when the upper guide rail is raised. Specifically, when the upper guide rail continues to rise, the first connecting rod and the second connecting rod rotate relative to each other based on their axial connection, and the slider continuously slides from one end of the lower guide rail to the other end of the lower guide rail. When the upper guide rail is raised to its full position, that is, when the RV roof is raised to its full position, the slider slides to directly above the pre-set pin hole of the lower guide rail. Because the blocking block is located on one side of the pin hole, the limiter on the slider contacts the blocking block, thereby changing the contact state between the limiter and the latch, causing the latch to leave the limiting state, and then the latch to fall and insert into the pin hole, causing the slider to be mechanically locked at the pin hole and unable to continue sliding on the lower guide rail. Since the slider is mechanically locked at the pin hole, one end of the second connecting rod is connected to the slider, and the other end of the second connecting rod is connected to one end of the upper guide rail, it means that the second connecting rod is also mechanically locked and cannot rotate, thereby achieving mechanical locking of the scissors lift mechanism. At this time, the upper guide rail is also mechanically locked by the scissor lift mechanism, thereby ensuring that the upper guide rail and the RV roof will not suddenly drop or fall due to user misoperation or vehicle system failure, causing a safety accident, thereby improving the safety and stability of the lifting structure.

[0006] In a possible implementation, the limiting member is a positioning lever, wherein: when the positioning lever contacts the blocking block, the blocking block constrains the positioning lever from moving, so that the positioning lever rotates, thereby causing the pin to leave the limiting state.

[0007] In this implementation, when the locking lever contacts the blocking block, the blocking block blocks one end of the locking lever. Furthermore, the slider continues to drive the locking lever, causing the blocking block to constrain the locking lever's movement, thereby allowing the locking lever to rotate. As the locking lever rotates, the physical contact between the locking lever and the latch pin changes, preventing the locking lever from retaining the latch pin, thereby allowing the latch pin to leave its restricted position.

[0008] In one possible implementation, the lifting safety structure further includes a horizontal bar connected to the latch, wherein: the positioning lever supports the horizontal bar, thereby limiting the position of the latch; when the positioning lever contacts the blocking block, the blocking block constrains the movement of the positioning lever to cause the positioning lever to rotate, thereby causing the horizontal bar to lose support, and thereby causing the latch to leave the limited state.

[0009] In this implementation, during normal operation, the locking lever is located below the horizontal bar, thereby supporting the horizontal bar and preventing the latch from falling. When the locking lever rotates, it is unable to support the horizontal bar in its original position, causing the horizontal bar and latch to gradually move downward under the influence of gravity as the locking lever rotates, ultimately causing the latch to fall into the pin hole.

[0010] It should also be noted that the horizontal bar can also serve as a pull bar for human use. When the user needs to control the lifting mechanism to contact the mechanical lock, they can manually control the horizontal bar to lift it, so that the latch pin can be removed from the pin hole, thereby releasing the mechanical lock of the slider and lifting mechanism. This solution can prevent the lifting mechanism from suddenly releasing the mechanical lock in the event of a vehicle system failure, thereby reducing the risk of accidents and improving the safety of the lifting mechanism.

[0011] In one possible implementation, the lifting safety structure also includes a return spring, one end of the return spring is connected to the slider, and the other end of the return spring is connected to the locking lever, wherein: when the pin is in the limited state, the return spring generates a first torque to make the locking lever support the cross bar; when the locking lever contacts the blocking block, the blocking block constrains the movement of the locking lever to make the locking lever overcome the first torque and rotate, thereby causing the cross bar to lose support, and then causing the pin to leave the limited state.

[0012] In this implementation, during normal operation, the locking lever is located below the horizontal bar. The return spring generates a slight torque, enabling the locking lever to support the horizontal bar and latch pin, thereby enhancing the stability of the lift safety structure during normal operation. When the blocking block constrains the movement of the locking lever, the restraining force exerted by the blocking block on the locking lever is greater than the torque exerted by the return spring on the locking lever, allowing the locking lever to rotate despite the first torque.

[0013] In a possible implementation, the lifting safety structure further includes: when the horizontal bar is lifted, the latch restores the limit state, thereby releasing the mechanical lock of the slider, and then causing the return spring to generate a second torque to return the locking lever.

[0014] In this implementation, when the user needs to control the lifting mechanism to contact the mechanical lock, they can manually control the horizontal bar to lift it, so that the latch pin leaves the pin hole, thereby releasing the mechanical lock of the slider and the lifting mechanism. At this point, the slider can slide on the lower rail again, and the blocking block no longer exerts a restraining force on the locking lever. The locking lever returns to its normal position under the action of the second torque of the return spring, thereby re-supporting the horizontal bar and limiting the latch pin.

[0015] In one possible implementation, the lifting safety structure further includes a latch spring, one end of which is connected to the slider, and the other end of which is connected to the latch, wherein: when the latch leaves the limit state, the latch spring releases the elastic force, thereby causing the latch to pop out and be inserted into the pin hole under the action of the elastic force.

[0016] In this implementation, by adding a latch spring, the latch can quickly pop out and insert into the pin hole under the elastic force of the latch spring when leaving the limit state, thereby accelerating the speed of mechanical locking of the lifting safety mechanism, reducing the risk of the lifting mechanism failing to lock in time, and thus improving the safety of the lifting safety mechanism.

[0017] The second aspect of the present invention provides a lifting safety system, which includes a main control module, which is electrically connected to the first connecting rod, wherein: the main control module is used to control the contraction of the first connecting rod to make the upper guide rail rise, thereby driving the slider to slide on the lower guide rail, so that the limit member contacts the blocking block, thereby causing the pin to leave the limit state, and then causing the pin to fall and insert into the pin hole, thereby realizing mechanical locking of the slider.

[0018] The above-mentioned lifting safety system can be applied to the RV roof lifting structure, wherein the upper guide rail can be connected to the roof so that when the upper guide rail rises, the roof is driven to rise. Specifically, the first connecting rod is an electric telescopic rod. When the main control module controls the first connecting rod to retract, the first connecting rod and the second connecting rod rotate relative to each other based on their axial connection parts, thereby realizing the continuous rise of the upper guide rail. At this time, the slider slides continuously from one end of the lower guide rail to the other end of the lower guide rail; when the upper guide rail rises to its position, that is, when the RV roof is raised to its position, the slider slides to the top of the pre-set lower guide rail pin hole; because the blocking block is located on one side of the pin hole, the limiter on the slider contacts the blocking block, thereby changing the contact state between the limiter and the pin, causing the pin to leave the limiting state, and then causing the pin to fall and insert into the pin hole, so that the slider is mechanically locked at the pin hole and cannot continue to slide on the lower guide rail. Because the slider is mechanically locked in the pin hole, one end of the second connecting rod is connected to the slider, and the other end of the second connecting rod is connected to one end of the upper guide rail, the second connecting rod is also mechanically locked and cannot rotate, thus achieving mechanical locking of the scissor lift mechanism. At this time, the upper guide rail is also mechanically locked by the scissor lift mechanism, ensuring that the upper guide rail and the RV roof will not suddenly drop or fall due to user error or vehicle system failure, causing a safety accident, thereby improving the safety and stability of the lifting structure.

[0019] In one possible implementation, the lifting safety control system also includes a power supply module and a first sensor; the power supply module is electrically connected to the main control module, the first connecting rod and the first sensor respectively; the first sensor is electrically connected to the main control module; the first sensor is fixed to the bottom of the pin hole, wherein: the power supply module is used to output power to the main control module, the first connecting rod and the first sensor; the first sensor is used to detect the pin, thereby sending a first signal to the main control module when the pin falls and is inserted into the pin hole; the main control module is also used to receive the first signal to enable the power supply module to stop supplying power to the first connecting rod.

[0020] In this implementation, when the sensor detects that the latch is in the pin hole, indicating that the lifting mechanism has been mechanically locked, the power module stops supplying power to the first connecting rod, further ensuring that the first connecting rod does not electrically extend or retract, further ensuring that the lifting safety mechanism does not suddenly drop or fall due to user error or vehicle system failure, thereby improving the safety and stability of the lifting structure. Furthermore, this implementation combines the mechanical locking of the safety latch with the circuit control of the electronic control unit to ensure that the lifting safety mechanism does not suddenly fall, further improving the safety and stability of the lifting structure.

[0021] In one possible implementation, the lifting safety control system also includes a second sensor, which is electrically connected to the main control module and the power supply module respectively; the second sensor is fixed above the slider, wherein: the power supply module is also used to output power to the second sensor; the second sensor is used to detect the pin, thereby sending a second signal to the main control module when the pin is in the limit state; the main control module is also used to receive the second signal to enable the power supply module to resume supplying power to the first connecting rod.

[0022] In this implementation, when the sensor detects the latch is in the limit position, indicating that the lifting mechanism has been mechanically unlocked, the power module resumes power to the first connecting rod, allowing it to electrically extend and retract, thereby allowing the upper rail to resume its upward or downward movement. This implementation combines the mechanical locking of the safety latch with the circuit control of the electronic control unit to control the lifting safety structure from two perspectives, further improving the safety and stability of the lifting mechanism.

[0023] In one possible implementation, the main control module is also used to receive the second signal to enable the power module to resume supplying power to the first connecting rod, and also includes: the main control module is also used to control the extension of the first connecting rod to make the upper guide rail descend, thereby driving the slider to slide on the lower guide rail, so that the limit member moves away from the blocking block, thereby returning the limit member to its position.

[0024] The lifting safety structure and system provided by the present invention have at least the following advantages over the prior art: the present invention can be applied to the RV roof raising structure, achieving mechanical fixation of the lifting structure by inserting a latch into a pin hole when the lifting structure is raised, thereby improving the safety of the RV roof raising structure. Furthermore, when the lifting mechanism is mechanically locked, the present invention causes the power module to stop supplying power to the first connecting rod, further ensuring that the first connecting rod will not be electrically extended or retracted, further ensuring that the RV roof raising mechanism will not suddenly descend or fall due to user error or vehicle system failure, causing a safety accident. This implementation, combined with the mechanical locking of the safety latch and the circuit control of the electronic control unit, improves the safety and stability of the RV roof raising structure from two aspects. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a structural diagram of a lifting safety structure provided by an embodiment of the present invention;

[0026] Figure 2 This is a circuit diagram of a lifting safety system provided by an embodiment of the present invention;

[0027] Among them: 1. Scissor lift mechanism; 11. First connecting rod; 12. Second connecting rod; 2. Upper guide rail; 3. Lower guide rail; 31. Pin hole; 32. Block; 4. Lower slider; 41. Latch; 42. Limiting piece; 43. Cross bar; 44. Return spring; 45. Latch spring; 5. Upper slider; 6. First sensor; 7. Second sensor; 100. Main control module; 200. Power module. DETAILED DESCRIPTION

[0028] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments. It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other.

[0029] The following detailed descriptions are all exemplary descriptions and are intended to provide further detailed descriptions of the present invention. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs; the terms used herein in the specification of the application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned drawings and any variations thereof are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.

[0030] References to "embodiments" herein mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0031] In order to achieve the above-mentioned purpose, the first aspect of the embodiment of the present invention provides a lifting safety structure. Figure 1 The lifting safety structure includes a scissor lift mechanism 1, an upper guide rail 2, a lower guide rail 3 and an upper slider 5; the scissor lift mechanism 1 includes a first connecting rod 11 and a second connecting rod 12; one end of the first connecting rod 11 is axially connected to one end of the lower guide rail 3, the other end of the first connecting rod 11 is axially connected to the upper slider 5, and the upper slider 5 is slidably connected to the upper guide rail 2; one end of the second connecting rod 12 is slidably connected to the lower guide rail 3, and the other end of the second connecting rod 12 is axially connected to one end of the upper guide rail 2; the first connecting rod 11 and the second connecting rod 12 are axially connected, and also include a lower slider 4, a latch 41 and a limiter 42, wherein: the lower slider 4 is respectively connected to the latch 41 and the limiter 4 2. One end of the second connecting rod 12 is axially connected to the lower slider 4, and the lower slider 4 is slidably connected to the lower guide rail 3; the limiting member 42 contacts the latch 41, thereby limiting the latch 41, so that the latch 41 is in a limited state; a pin hole 31 is provided on the track of the lower guide rail 3, and a blocking block 32 is provided on the track side of the lower guide rail 3, and the blocking block 32 is located on one side of the pin hole 31; when the upper guide rail 2 rises, the lower slider 4 slides on the lower guide rail 3, so that the limiting member 42 contacts the blocking block 32, thereby causing the latch 41 to leave the limited state, and then causing the latch 41 to fall and be inserted into the pin hole 31, thereby realizing mechanical locking of the lower slider 4.

[0032] The above-mentioned lifting safety structure can be applied to the RV roof lifting structure, wherein the upper guide rail 2 can be connected to the roof so as to drive the roof to rise when the upper guide rail 2 rises. Specifically, when the upper guide rail 2 continues to rise, the first connecting rod 11 and the second connecting rod 12 rotate relative to each other based on their axial connection parts, and at this time, the lower slider 4 continues to slide from one end of the lower guide rail 3 to the other end of the lower guide rail 3; when the upper guide rail 2 rises to its position, that is, when the RV roof is raised to its position, the lower slider 4 slides to the top of the pre-set pin hole 31 of the lower guide rail 3; because the blocking block 32 is located on one side of the pin hole 31, the limiter 42 on the lower slider 4 contacts the blocking block 32, thereby changing the contact state between the limiter 42 and the latch 41, causing the latch 41 to leave the limiting state, and then causing the latch 41 to fall and be inserted into the pin hole 31, so that the lower slider 4 is mechanically locked at the pin hole 31 and cannot continue to slide on the lower guide rail 3. Because the lower slider 4 has been mechanically locked at the pin hole 31, and one end of the second connecting rod 12 is connected to the lower slider 4, and the other end of the second connecting rod 12 is connected to one end of the upper guide rail 2, the second connecting rod 12 is also mechanically locked and cannot rotate, thereby achieving mechanical locking of the scissor lift mechanism 1. At this time, the upper guide rail 2 is also mechanically locked by the scissor lift mechanism 1, ensuring that the upper guide rail 2 and the RV roof will not suddenly drop or fall due to user error or vehicle system failure, causing a safety accident, thereby improving the safety and stability of the lifting structure.

[0033] In a possible embodiment, the limiting member 42 is a positioning lever, wherein: when the positioning lever contacts the blocking block 32, the blocking block 32 constrains the movement of the positioning lever to cause the positioning lever to rotate, thereby causing the pin 41 to leave the limiting state.

[0034] In this embodiment, when the locking lever contacts the blocking block 32, the blocking block 32 blocks one end of the locking lever. Furthermore, the lower slider 4 continues to drive the locking lever, causing the blocking block 32 to constrain the locking lever's movement, thereby allowing the locking lever to rotate. As the locking lever rotates, the physical contact between the locking lever and the latch 41 changes, causing the locking lever to no longer restrain the latch 41, thereby causing the latch 41 to leave the restrained position.

[0035] In a possible embodiment, the lifting safety structure also includes a horizontal bar 43, which is connected to the pin 41, wherein: the positioning lever supports the horizontal bar 43, thereby limiting the positioning of the pin 41; when the positioning lever contacts the blocking block 32, the blocking block 32 constrains the positioning lever to move, so that the positioning lever rotates, thereby causing the horizontal bar 43 to lose support, and thereby causing the pin 41 to leave the limited state.

[0036] In this embodiment, during normal operation, the locking lever is located below the horizontal bar 43, thereby supporting the horizontal bar 43 and preventing the latch 41 from falling. When the locking lever rotates, it is unable to support the horizontal bar 43 in its original position. As a result, the horizontal bar 43 and the latch 41 gradually move downward under the influence of gravity due to the rotation of the locking lever, and eventually the latch 41 falls into the pin hole 31.

[0037] It should also be noted that the horizontal bar 43 can also serve as a pull bar for human use. When the user needs to control the lifting mechanism to contact the mechanical lock, they can manually control the horizontal bar 43 to lift it, so that the latch 41 leaves the pin hole 31, thereby releasing the mechanical lock of the lower slider 4 and the lifting mechanism. This solution, by adding a step of human intervention to achieve the mechanical release of the lifting mechanism, can prevent the lifting mechanism from suddenly releasing the mechanical lock in the event of a vehicle system failure, thereby reducing the risk of accidents and improving the safety of the lifting mechanism.

[0038] In a possible embodiment, the lifting safety structure also includes a return spring 44, one end of the return spring 44 is connected to the lower slider 4, and the other end of the return spring 44 is connected to the locking lever, wherein: when the pin 41 is in the limiting state, the return spring 44 generates a first torque to make the locking lever support the cross bar 43; when the locking lever contacts the blocking block 32, the blocking block 32 constrains the movement of the locking lever to make the locking lever overcome the first torque and rotate, thereby causing the cross bar 43 to lose support, and then causing the pin 41 to leave the limiting state.

[0039] In this embodiment, during normal operation, the locking lever is located below the horizontal bar 43. The return spring 44 generates a slight torque, which enables the locking lever to support the horizontal bar 43 and the latch 41 and prevent them from falling, thereby improving the stability of the lifting safety structure during normal operation. When the blocking block 32 constrains the movement of the locking lever, the restraining force exerted by the blocking block 32 on the locking lever is greater than the torque exerted by the return spring 44 on the locking lever, thereby allowing the locking lever to rotate despite the first torque.

[0040] In a possible embodiment, the lifting safety structure also includes: when the horizontal bar 43 is lifted, the latch 41 restores the limit state, thereby releasing the mechanical lock of the lower slider 4, and then causing the return spring 44 to generate a second torque to return the locking lever.

[0041] In this embodiment, when the user needs to control the lifting mechanism to engage the mechanical lock, they can manually control the horizontal bar 43 to lift, so that the latch 41 leaves the pin hole 31, thereby releasing the mechanical lock between the lower slider 4 and the lifting mechanism. At this point, the lower slider 4 can slide on the lower guide rail 3 again, and the blocking block 32 no longer exerts a restraining force on the locking lever. The locking lever returns to its normal position under the action of the second torque of the return spring 44, thereby re-supporting the horizontal bar 43 and limiting the position of the latch 41.

[0042] In a possible embodiment, the lifting safety structure further includes a latch spring 45, one end of the latch spring 45 is connected to the lower slider 4, and the other end of the latch spring 45 is connected to the latch 41, wherein: when the latch 41 leaves the limited state, the latch spring 45 releases the elastic force, thereby causing the latch 41 to pop out and be inserted into the pin hole 31 under the action of the elastic force.

[0043] In this embodiment, by adding a latch spring 45, the latch 41 can quickly pop out and insert into the pin hole 31 under the elastic force of the latch spring 45 when leaving the limit state, thereby accelerating the speed of the mechanical locking of the lifting safety mechanism, reducing the risk of the lifting mechanism failing to lock in time, and thus improving the safety of the lifting safety mechanism.

[0044] refer to Figure 1 and Figure 2 According to a second aspect of an embodiment of the present invention, a lifting safety system is provided, which includes a main control module 100, and the main control module 100 is electrically connected to the first connecting rod 11, wherein: the main control module 100 is used to control the contraction of the first connecting rod 11 to make the upper guide rail 2 rise, thereby driving the lower slider 4 to slide on the lower guide rail 3, so that the limit member 42 contacts the blocking block 32, thereby causing the pin 41 to leave the limit state, and then causing the pin 41 to fall and be inserted into the pin hole 31, thereby realizing mechanical locking of the lower slider 4.

[0045] The aforementioned lifting safety system can be applied to a RV roof structure, wherein the upper guide rail 2 can be connected to the roof, so that when the upper guide rail 2 rises, the roof also rises. Specifically, the first connecting rod 11 is an electrically operated telescopic rod. When the main control module 100 controls the first connecting rod 11 to retract, the first connecting rod 11 and the second connecting rod 12 rotate relative to each other at their axial connection, thereby achieving continuous ascent of the upper guide rail 2. At this time, the lower slider 4 continues to slide from one end of the lower guide rail 3 to the other end of the lower guide rail 3; when the upper guide rail 2 rises to its position, that is, when the RV is raised to its position, the lower slider 4 slides to just above the pre-set pin hole 31 of the lower guide rail 3; because the blocking block 32 is located on one side of the pin hole 31, the limiting member 42 on the lower slider 4 contacts the blocking block 32, thereby changing the contact state between the limiting member 42 and the latch 41, causing the latch 41 to leave the limiting state, and then causing the latch 41 to fall and insert into the pin hole 31, so that the lower slider 4 is mechanically locked at the pin hole 31 and cannot continue to slide on the lower guide rail 3. Since the lower slider 4 has been mechanically locked at the pin hole 31, and one end of the second connecting rod 12 is connected to the lower slider 4, and the other end of the second connecting rod 12 is connected to one end of the upper guide rail 2, it means that the second connecting rod 12 is also mechanically locked and cannot rotate, thereby achieving mechanical locking of the scissors lift mechanism 1. At this time, the upper guide rail 2 is also mechanically locked by the scissor lift mechanism 1, thereby ensuring that the upper guide rail 2 and the RV roof will not suddenly drop or fall due to user misoperation or vehicle system failure, causing a safety accident, thereby improving the safety and stability of the lifting structure.

[0046] In a possible embodiment, the lifting safety control system also includes a power supply module 200 and a first sensor 6; the power supply module 200 is electrically connected to the main control module 100, the first connecting rod 11 and the first sensor 6 respectively; the first sensor 6 is electrically connected to the main control module 100; the first sensor 6 is fixed to the bottom of the pin hole 31, wherein: the power supply module 200 is used to output power to the main control module 100, the first connecting rod 11 and the first sensor 6; the first sensor 6 is used to detect the pin 41, thereby sending a first signal to the main control module 100 when the pin 41 falls and is inserted into the pin hole 31; the main control module 100 is also used to receive the first signal to enable the power supply module 200 to stop supplying power to the first connecting rod 11.

[0047] In this embodiment, when the sensor detects that the latch 41 is in the pin hole 31, it indicates that the lifting mechanism has been mechanically locked. At this time, the power module 200 stops supplying power to the first connecting rod 11, further ensuring that the first connecting rod 11 will not be electrically extended or retracted. This further ensures that the lifting safety mechanism will not suddenly drop or fall due to user error or vehicle system failure, thereby improving the safety and stability of the lifting structure. In addition, this implementation combines the mechanical locking of the safety latch 41 with the circuit control of the electronic control unit to ensure that the lifting safety mechanism will not suddenly fall from two aspects, further improving the safety and stability of the lifting structure.

[0048] In a possible embodiment, the lifting safety control system also includes a second sensor 7, which is electrically connected to the main control module 100 and the power module 200 respectively; the second sensor 7 is fixed above the lower slider 4, wherein: the power module 200 is also used to output power to the second sensor 7; the second sensor 7 is used to detect the pin 41, thereby sending a second signal to the main control module 100 when the pin 41 is in the limit state; the main control module 100 is also used to receive the second signal to enable the power module 200 to resume supplying power to the first connecting rod 11.

[0049] In this embodiment, when the sensor detects that the latch 41 is in the limited position, indicating that the lifting mechanism has been mechanically unlocked, the power module 200 is activated to resume powering the first connecting rod 11, allowing it to electrically extend and retract, thereby resuming the upper guide rail 2's upward or downward movement. This implementation combines the mechanical locking of the safety latch 41 with the circuit control of the electronic control unit, controlling the lifting safety mechanism from two perspectives, further enhancing the safety and stability of the lifting mechanism.

[0050] In a possible embodiment, the main control module 100 is also used to receive the second signal to enable the power module 200 to resume supplying power to the first connecting rod 11, and further includes: the main control module 100 is also used to control the extension of the first connecting rod 11 to make the upper guide rail 2 descend, thereby driving the lower slider 4 to slide on the lower guide rail 3, so that the limit member 42 is away from the blocking block 32, thereby returning the limit member 42 to its position.

[0051] In a possible embodiment, under the initial condition, the upper guide rail 2 is not raised, the slider 4 is located at the far right end of the lower guide rail 3, the blocking block 32 is fixed on one side of the pin hole 31 of the lower guide rail 3, and the rotational elastic force of the return spring 44 always acts on the limit member 42, so that the limit member 42 supports the cross bar 43, thereby fixing and lifting the pin 41.

[0052] When the upper guide rail 2 needs to rise, the slider 4 slides from right to left, and when it is fixed in position by the blocking block 32, the limit member 42 is blocked by the blocking block 32 and driven to gradually rotate counterclockwise; after the limit member 42 rotates to a certain angle, it loses support for the cross bar 43, so that the cross bar 43 and the latch 41 move downward under the elastic force of the latch spring 45, and finally when reaching the pin hole 31, the latch 41 is just inserted into the pin hole 31 of the lower guide rail 3, the slider 4 stops sliding, the scissors lift mechanism 1 stops moving, and the upper guide rail 2 stops rising.

[0053] When the upper guide rail 2 needs to be lowered, the cross bar 43 needs to be manually lifted to move the latch 41 back up and contact the second sensor 7, and then the upper guide rail 2 can be lowered; at this time, the slider 4 slides back, and when it is fixed in position by the blocking block 32, the limit member 42 is blocked by the blocking block 32 and driven to rotate clockwise, but the limit member 42 has been supporting the cross bar 43, and finally the limit member 42 returns to the initial position.

[0054] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope recorded in this specification.

[0055] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present application. It should be noted that a person of ordinary skill in the art may make several improvements and substitutions without departing from the scope of the present application, and such improvements and substitutions should also be considered within the scope of protection of the present invention. Therefore, the scope of protection of the present application shall be determined by the appended claims.

Claims

1. A lifting safety structure, comprising a scissor lift mechanism, an upper guide rail and a lower guide rail; the scissor lift mechanism comprises a first connecting rod and a second connecting rod; one end of the first connecting rod is axially connected to one end of the lower guide rail, and the other end of the first connecting rod is slidably connected to the upper guide rail; one end of the second connecting rod is slidably connected to the lower guide rail, and the other end of the second connecting rod is axially connected to one end of the upper guide rail; the first connecting rod and the second connecting rod are axially connected, characterized in that It also includes a slider, a latch and a limiter, wherein: The slider is connected to the latch and the limiter respectively, one end of the second connecting rod is connected to the slider shaft, and the slider is slidably connected to the lower guide rail; The limiting member contacts the latch, thereby limiting the latch so that the latch is in a limited position; A pin hole is provided on the track of the lower guide rail, and a stop block is provided on the track side of the lower guide rail, and the stop block is located on one side of the pin hole; When the upper guide rail rises, the slider slides on the lower guide rail to make the limiting member contact the blocking block, so that the latch leaves the limiting state, and then the latch falls and is inserted into the pin hole, thereby achieving mechanical locking of the slider.

2. A lifting safety structure according to claim 1, characterized in that: The limiting member is a locking lever, wherein: When the locking lever contacts the blocking block, the blocking block restricts the locking lever from moving, so that the locking lever rotates, thereby causing the latch to leave the limiting state.

3. A lifting safety structure according to claim 2, characterized in that: Also included is a crossbar, the crossbar connecting the latch, wherein: The locking lever supports the horizontal bar, thereby limiting the position of the latch pin; When the locking lever contacts the blocking block, the blocking block restricts the locking lever from moving, so that the locking lever rotates, thereby causing the cross bar to lose support, and further causing the latch to leave the limiting state.

4. A lifting safety structure according to claim 3, characterized in that: It also includes a return spring, one end of which is connected to the slider, and the other end of which is connected to the locking lever, wherein: When the latch is in the limited position, the return spring generates a first torque to enable the locking lever to support the crossbar; When the locking lever contacts the blocking block, the blocking block restricts the locking lever from moving, so that the locking lever overcomes the first torque and rotates, thereby causing the cross bar to lose support and causing the latch to leave the limiting state.

5. A lifting safety structure according to claim 4, characterized in that: Also includes: When the horizontal bar is lifted, the latch pin returns to the limited position, thereby releasing the mechanical lock of the slider, and further causing the return spring to generate a second torque to return the locking lever.

6. A lifting safety structure according to claim 2, characterized in that: It also includes a latch spring, one end of which is connected to the slider, and the other end of which is connected to the latch, wherein: When the latch leaves the limited position, the latch spring releases its elastic force, thereby causing the latch to pop out and be inserted into the pin hole under the action of the elastic force.

7. A lifting safety system, characterized in that: The lifting safety structure according to any one of claims 1 to 6 comprises a main control module, wherein the main control module is electrically connected to the first connecting rod, wherein: The main control module is used to control the contraction of the first connecting rod to make the upper guide rail rise, thereby driving the slider to slide on the lower guide rail, so that the limit member contacts the blocking block, thereby making the pin leave the limit state, and then making the pin fall and insert into the pin hole to achieve mechanical locking of the slider.

8. A lifting safety system according to claim 7, characterized in that: It also includes a power module and a first sensor; the power module is electrically connected to the main control module, the first connecting rod and the first sensor respectively; the first sensor is electrically connected to the main control module; the first sensor is fixed to the bottom of the pin hole, wherein: The power supply module is used to supply power to the main control module, the first connecting rod and the first sensor output; The first sensor is used to detect the latch pin, so that when the latch pin falls and is inserted into the pin hole, a first signal is sent to the main control module; The main control module is further used to receive the first signal to instruct the power module to stop supplying power to the first connecting rod.

9. A lifting safety system according to claim 8, characterized in that: It also includes a second sensor, which is electrically connected to the main control module and the power module respectively; the second sensor is fixed above the slider, wherein: The power module is also used to supply power to the second sensor output; The second sensor is used to detect the latch, so as to send a second signal to the main control module when the latch is in the limit state; The main control module is further used to receive the second signal to enable the power module to resume supplying power to the first connecting rod.

10. A lifting safety system according to claim 9, characterized in that: The main control module is also used to receive the second signal to enable the power module to resume supplying power to the first connecting rod, and further includes: The main control module is also used to control the extension of the first connecting rod to make the upper guide rail descend, thereby driving the slider to slide on the lower guide rail, so that the limiting member is away from the blocking block, thereby returning the limiting member to its original position.

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