Magnetic trigger structure of anti-pinch device

Abstract

The utility model discloses a magnetic trigger structure of an anti-pinch device, which relates to the technical field of safety protection devices and comprises a left anti-pinch unit and a right anti-pinch unit. When the left anti-pinch unit and the right anti-pinch unit are located at normal closing positions, a magnetic trigger component is conducted with a control system; the control system controls the left side anti-pinch unit and the right side anti-pinch unit to stop moving; when it is detected that a foreign matter is clamped between the left side anti-pinch unit and the right side anti-pinch unit, the magnetic trigger component is connected with the control system, and the control system controls the left side anti-pinch unit and the right side anti-pinch unit to move reversely so as to release the foreign matter. The anti-pinch units can be arranged in multiple groups or arranged in the left-right direction according to actual use scenes, and therefore different protection functions and applicability are achieved. The right anti-pinch unit can be fixed to enhance the stability and protection effect of the system.

Description

Technical Field

[0001] The utility model relates to the technical field of safety protection devices, and more specifically to the technical field of a magnetic trigger structure of an anti-pinch device. Background Art

[0002] Safety devices are crucial in modern machinery, especially in areas like elevators and automatic doors, where pinching accidents are common and can cause injury. Traditional pinching devices often employ mechanical structures or simple photoelectric sensors. While these devices offer some protection, they lack real-time response and accuracy. Infrared or pressure sensing technologies are commonly used in pinching devices.

[0003] Infrared sensors are widely used in anti-pinch devices to detect obstacles and prevent pinching. However, traditional infrared technology has limitations in scanning range and accuracy. Infrared sensors typically rely on linear scanning, which cannot fully cover the entire area, resulting in blind spots. This limitation can prevent infrared systems from recognizing and responding to approaching small objects in places like elevator doors and automatic doors, posing a safety hazard.

[0004] Pressure sensors are widely used in anti-pinch devices, which reverse their operation when a foreign object is detected. However, traditional anti-pinch devices can be overly sensitive in certain situations, leading to frequent false triggering and affecting the normal operation of the equipment.

[0005] Furthermore, existing anti-pinch technology often lacks flexibility and cannot adapt to different working environments and application requirements. In certain special situations, such as high humidity, the performance of traditional anti-pinch devices may decline, increasing safety risks. Utility Model Content

[0006] This utility model aims to address the technical issues of existing anti-pinch devices, such as low reliability, easy mis-activation, and incompatibility with complex working environments. This utility model provides a magnetic trigger structure for an anti-pinch device. This device utilizes a magnetic trigger mechanism, offering high sensitivity and reliability, effectively preventing pinching accidents and adapting to various complex working environments, thereby improving overall safety and operational efficiency.

[0007] In order to achieve the above-mentioned purpose, the present invention specifically adopts the following technical solutions:

[0008] The utility model provides a magnetic trigger structure of an anti-pinch device, comprising a left anti-pinch unit and a right anti-pinch unit; a magnetic trigger component is provided in the left anti-pinch unit, and a magnetic driving component cooperating with the magnetic trigger component is provided in the right anti-pinch unit, the magnetic trigger component is electrically connected to a control system through a line, when the left anti-pinch unit and the right anti-pinch unit are in a normally closed position, the magnetic trigger component is connected to the control system, and the control system controls the left anti-pinch unit and the right anti-pinch unit to stop moving; when it is detected that a foreign object is clamped between the left anti-pinch unit and the right anti-pinch unit, the magnetic trigger component is connected to the control system, and the control system controls the left anti-pinch unit and the right anti-pinch unit to move in the opposite direction to release the foreign object.

[0009] Specifically, the anti-pinch units can be arranged in multiple groups (multiple groups of left and right anti-pinch units) or arranged in a left-right direction according to the actual usage scenario, thereby achieving different protection functions and applicability. The right anti-pinch unit can be fixed to enhance the stability and protection effect of the system.

[0010] In addition, the magnetic trigger structure can be used in combination with traditional infrared sensors and pressure sensors to enhance the overall protection effect and responsiveness.

[0011] In one embodiment, the left anti-pinch unit further includes a left housing cover assembly;

[0012] The magnetic triggering component includes a first moving component, a compression spring, a second moving component and a sealing pressure plate assembly; a horizontal mounting hole is provided inside the left shell sealing plate assembly on a side close to the right anti-pinch unit; the first moving component, the compression spring and the second moving component are in contact with each other and are arranged in the horizontal mounting hole from right to left in sequence; the second moving component is fixedly provided, the first moving component is slidably provided, and the sealing pressure plate assembly is provided on the side of the left shell sealing plate assembly close to the right anti-pinch unit;

[0013] The first motion component partially protrudes from the right end of the left shell sealing plate assembly and is connected to the sealing pressure plate assembly. The protruding portion of the first motion component and the sealing pressure plate assembly constitute a flexible protrusion.

[0014] A matching groove matching with the flexible protruding portion is provided on the left side of the right anti-pinch unit, and the magnetic driving component is arranged inside the matching groove, and the size of the matching groove is larger than the flexible protruding portion.

[0015] Specifically, when the external pressure is released, the compression spring will quickly return to its initial state and trigger the reset function of the first motion component to ensure that it can quickly return to normal working state.

[0016] At this time, the flexible protrusion completely protrudes from the left side housing sealing plate assembly, ensuring that force can be effectively transmitted and good sealing performance can be maintained when pressure is applied.

[0017] In addition, the size of the mating groove is larger than the flexible protrusion, and an appropriate gap is left to ensure that the flexible protrusion enters the mating groove completely when entering the mating groove, avoiding the occurrence of accidental contact. The size of this gap can be flexibly adjusted to accommodate anti-pinch objects of different sizes.

[0018] In one embodiment, the left shell sealing plate assembly includes a left shell sealing plate and a left shell, the horizontal mounting hole is located in the left shell, and the left shell sealing plate is located on the side of the horizontal mounting hole away from the right anti-pinch unit.

[0019] Specifically, the left side shell is used to provide structural support, the horizontal mounting holes are used to install and fix the various components (the first moving component and the second moving component), and at the same time, a limiting structure is provided inside the horizontal mounting holes to ensure that the various components will not exceed the predetermined movement range during operation.

[0020] The first motion component is installed from the left side into the horizontal mounting hole of the left shell, and its horizontal movement is limited by the provided limiting structure. The first motion component partially protrudes from the right side of the left shell.

[0021] The second motion assembly is similarly installed from the left side into the horizontal mounting hole of the left housing and secured by the left housing cover. A compression spring forms an elastic support relationship with the first motion assembly, providing the necessary support and rebound for the first motion assembly's movement. Different compression spring types can be used according to actual usage to adjust the device's sensitivity.

[0022] In one embodiment, the first moving assembly includes a first upper sealing plate, a first conductive terminal, a first wire, a first terminal, a first conductive layer, a first insulating layer, a first magnetic element, a first moving component housing, a second magnetic element, and a first lower sealing plate;

[0023] A transverse through hole is provided inside the housing of the first moving component, and a first lower sealing plate and a first upper sealing plate are respectively sealed at the left and right ends of the transverse through hole;

[0024] A first magnetic mounting hole for mounting and limiting a second magnetic element is provided in the transverse through hole on one side close to the first lower sealing plate;

[0025] A second magnetic mounting hole is provided on one side of the transverse through hole close to the first upper sealing plate. The first conductive layer, the first insulating layer, and the first magnetic element are arranged in sequence from right to left. The three are integrated into one body and slidably arranged in the second magnetic mounting hole. The first conductive terminal is fixedly provided on the left side of the first upper sealing plate. The first conductive terminal is connected to the control system through a first wire and a first terminal provided at the end of the first wire.

[0026] The magnetic directions of the first magnetic element and the second magnetic element are the same, and adjacent ends of the first magnetic element and the second magnetic element attract each other.

[0027] Specifically, the first conductive layer and the first insulating layer ensure effective conduction and safe isolation of current;

[0028] The first magnetic element is sequentially attached to the surface of the first insulating layer and the first conductive layer and is mounted to the left of the second magnetic mounting hole in the housing of the first moving component. The height of the second magnetic mounting hole is greater than the combined thickness of the first magnetic element, the first insulating layer, and the first conductive layer, providing space for the first magnetic element to move horizontally.

[0029] The housing of the first moving component is provided with a wire outlet hole for leading out the internal circuit (first wire, first terminal) to facilitate electrical connection and access to external equipment.

[0030] In one embodiment, the second moving assembly includes a second upper sealing plate, a second shock absorbing ring, a second conductive terminal, a second wire, a second terminal, a second conductive layer, a second insulating layer, a third magnetic element, a second moving component housing, a fourth magnetic element, and a second lower sealing plate;

[0031] A transverse through hole is provided inside the housing of the second moving component, and a second lower sealing plate and a second upper sealing plate are respectively sealed and arranged at the left and right ends of the transverse through hole;

[0032] A third magnetic mounting hole for mounting and limiting a fourth magnetic element is provided on one side of the transverse through hole close to the second lower cover plate;

[0033] A fourth magnetic mounting hole is provided on one side of the transverse through hole close to the second upper sealing plate. The second conductive layer, the second insulating layer, and the third magnetic element are arranged in sequence from right to left. The three are integrated into one body and slidably arranged in the fourth magnetic mounting hole. The second conductive terminal is fixedly provided on the left side of the second upper sealing plate. The second conductive terminal is connected to the control system through a second wire and a second terminal provided at the end of the second wire.

[0034] The third magnetic element and the fourth magnetic element have the same magnetic direction, and adjacent ends of the third magnetic element and the fourth magnetic element attract each other;

[0035] The compression spring is assembled between the first lower sealing plate and the second upper sealing plate, and the compression spring provides support and rebound for the first motion component during motion.

[0036] In one embodiment, the first motion assembly further includes a first shock-absorbing ring, and the first conductive terminal is fixedly arranged on the left side of the first upper sealing plate through the first shock-absorbing ring;

[0037] The second moving assembly also includes a second shock-absorbing ring, and the second conductive terminal is fixedly arranged on the left side of the second upper sealing plate through the second shock-absorbing ring.

[0038] In one embodiment, the sealing pressure plate assembly includes a pressure plate and an elastic sealing plate, and the pressure plate is fixed to the protruding portion of the first moving assembly.

[0039] In one embodiment, the elastic sealing plate is fixed to the pressure plate and is also fixed to the right side of the left shell sealing plate. The elastic sealing plate and the left shell form a sealed space.

[0040] Specifically, this design provides a completely sealed space between the left anti-pinch unit and the elastic sealing plate, effectively preventing the entry of external dust and liquid, ensuring the normal operation of the device and the protection of internal components.

[0041] The elastic sealing plate's superior softness and deformability allow it to effectively adapt to pressure changes, ensuring excellent sealing performance. Furthermore, the elastic sealing plate requires minimal force to deform, and the deformed elastic sealing plate wraps around the pressure plate, ensuring the structure's full functionality.

[0042] In one embodiment, the right anti-pinch unit includes a right anti-pinch unit housing;

[0043] The magnetic drive component includes a fifth magnetic element and a fifth magnetic element sealing plate. The mating groove is located on the left side of the right anti-pinch unit housing and cooperates with the flexible protruding part. A fifth magnetic mounting hole for installing the fifth magnetic element is provided in the accommodating groove. The fifth magnetic element sealing plate is sealed at the opening of the fifth magnetic mounting hole, and the outer wall of the fifth magnetic element sealing plate is flush with the bottom of the accommodating groove.

[0044] In one embodiment, the centers of the first magnetic element, the second magnetic element, the third magnetic element, the fourth magnetic element, and the fifth magnetic element are located on the same straight line, have the same magnetic direction, and attract each other.

[0045] Working principle:

[0046] As shown in the figure, under normal operating conditions, the left anti-pinch unit and the right anti-pinch unit approach each other. When the two are close, the flexible protrusion of the left anti-pinch unit gradually enters the groove inside the housing of the right anti-pinch unit. This process is carried out without the intervention of external forces, ensuring that the flexible protrusion is smoothly embedded in the groove. When the attraction between the fifth magnetic element and the first magnetic element inside the right anti-pinch unit is greater than the attraction between the second magnetic element and the first magnetic element, the second magnetic element in the first moving component moves to the right. At this time, the first conductive layer contacts the first conductive terminal, the circuit is closed, and the stop signal is transmitted through the first wire, and the left and right anti-pinch units stop moving.

[0047] At this point, the attraction between the fifth magnetic element and the first magnetic element is greater than the attraction between the second magnetic element and the first magnetic element, forming a stable magnetic connection and maintaining a fixed position. The first conductive layer maintains contact with the first conductive terminal, ensuring the circuit is closed and the signal can be continuously transmitted. This design enables the system to monitor and transmit information in real time during normal operation, ensuring effective protection and system response.

[0048] As the left and right anti-pinch units move away from each other, the flexible protrusion gradually disengages from the groove in the right anti-pinch unit. When the attraction between the fifth magnetic element and the first magnetic element becomes less than the attraction between the second magnetic element and the first magnetic element, the first magnetic element moves toward the second magnetic element until it contacts the bottom of the right mounting hole in the housing of the first moving component and stops. At this point, the first conductive layer is disconnected from the first conductive terminal, breaking the circuit.

[0049] At this time, the attraction between the fifth magnetic element and the first magnetic element is smaller than the attraction between the second magnetic element and the first magnetic element, and the second magnetic element and the first magnetic element form a stable magnetic connection and remain fixed.

[0050] When the left and right anti-pinch units approach each other, an external force contacts the flexible protrusion, gradually increasing until it exceeds the preset pressure of the compression spring. This force then compresses the compression spring, causing the flexible protrusion to drive the first moving assembly. At this point, the attraction between the second and third magnetic elements becomes greater than the attraction between the third and fourth magnetic elements, causing the third magnetic element in the second moving assembly to move rightward. When the second conductive layer contacts the second conductive terminal, the circuit is closed, and a signal is transmitted via the second conductor. This signal quickly separates the two units, effectively preventing pinching accidents and ensuring the safety of people and objects.

[0051] In the anti-pinch design, even small objects can be effectively protected as long as the object is larger than the gap set by the groove and the flexible protrusion. At the same time, the gap can be adjusted according to actual use to suit different application needs.

[0052] The beneficial effects of the utility model are as follows:

[0053] 1. The anti-pinch units can be arranged in multiple groups (multiple left and right anti-pinch units) or arranged in a left-right orientation, depending on the actual usage scenario, to achieve different protection functions and applicability. The right anti-pinch unit can be fixed to enhance system stability and protection effectiveness. In addition, this magnetic trigger structure can be used in combination with traditional infrared sensors and pressure sensors to improve overall protection effectiveness and responsiveness.

[0054] 2. When external pressure is released, the compression spring quickly returns to its initial state, triggering the reset function of the first motion assembly to ensure a quick return to normal operation. At this point, the flexible protrusion fully protrudes from the left housing seal assembly, ensuring effective force transmission and a good seal when pressure is applied. Furthermore, the mating groove is larger than the flexible protrusion and leaves an appropriate gap to ensure that the flexible protrusion fully enters the mating groove upon entry, preventing accidental contact. The size of this gap can be flexibly adjusted to accommodate anti-pinch objects of varying sizes.

[0055] 3. An elastic support relationship is formed between the compression spring and the first moving component to provide necessary support and rebound for the movement of the first moving component. The compression spring can use different types of springs according to actual usage to adjust the sensitivity of the device.

[0056] 4. This design provides a completely sealed space between the left anti-pinch unit and the elastic sealing plate, effectively preventing the entry of external dust and liquid, ensuring the normal operation of the device and the protection of internal components.

[0057] 5. The elastic sealing plate has excellent softness and deformability, which can effectively adapt to pressure changes and ensure excellent sealing performance. In addition, the elastic sealing plate requires very little force during deformation, and the deformed elastic sealing plate can wrap around the pressure plate. This feature ensures that the structure can fully utilize its functions. BRIEF DESCRIPTION OF THE DRAWINGS

[0058] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0059] Figure 1 It is a structural diagram of the utility model;

[0060] Figure 2 This is an exploded view of the left anti-pinch unit;

[0061] Figure 3 This is an exploded view of the left anti-pinch unit housing assembly;

[0062] Figure 4 It is an exploded diagram of the first motion component;

[0063] Figure 5 This is an exploded view of the second motion component and the compression spring;

[0064] Figure 6 is an exploded view of the sealed pressure plate assembly;

[0065] Figure 7 This is an exploded view of the anti-pinch unit on the right side;

[0066] Figure 8 is a cross-sectional view of the first motion assembly;

[0067] Figure 9 is a cross-sectional view of a second moving part assembly;

[0068] Figure 10 It is a cross-sectional view of the utility model in the open state;

[0069] Figure 11 It is a cross-sectional view of the closed state;

[0070] Figure 12 It is a cross-sectional view of the intervention state;

[0071] Reference numerals: 1-left anti-pinch unit, 2-right anti-pinch unit;

[0072] 11-Left anti-pinch unit housing assembly;

[0073] 111-left side housing, 112-left side housing cover plate;

[0074] 12- second motion component;

[0075] 121 - second lower sealing plate, 122 - second upper sealing plate, 123 - compression spring, 124 - second conductive terminal, 125 - second conductive layer, 126 - second insulating layer, 127 - third magnetic element, 128 - second moving component housing, 129 - fourth magnetic element;

[0076] 13- first motion component;

[0077] 131 - first upper sealing plate, 132 - first shock-absorbing ring, 133 - first conductive terminal, 134 - second magnetic element, 135 - first lower sealing plate, 136 - first conductive layer, 137 - first insulating layer, 138 - first magnetic element, 139 - first moving component housing;

[0078] 14-sealed pressure plate assembly;

[0079] 141-pressure plate, 142-elastic sealing plate;

[0080] 21 - right anti-pinch unit housing, 22 - fifth magnetic element, 23 - fifth magnetic element sealing plate. DETAILED DESCRIPTION

[0081] To make the technical problems, technical solutions, and technical effects of the present invention more clear, the following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0082] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.

[0083] It should be noted that similar reference numerals and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings. In addition, the terms "first," "second," etc. are used only to distinguish the descriptions and are not to be understood as indicating or implying relative importance.

[0084] In the description of the embodiments of the present invention, it should be noted that the terms "inside", "outside", "upper", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the product of the present invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as a limitation on the present invention.

[0085] Example 1

[0086] like Figures 1 to 12 As shown, this embodiment provides a magnetic trigger structure of an anti-pinch device, including a left anti-pinch unit 1 and a right anti-pinch unit 2; a magnetic trigger component is provided in the left anti-pinch unit 1, and a magnetic driving component for driving the magnetic trigger component to work is provided in the right anti-pinch unit 2, and the magnetic trigger component is electrically connected to the control system through a line. When the left anti-pinch unit 1 and the right anti-pinch unit 2 are in a normal closed position, the magnetic trigger component is connected to the control system, and the control system controls the left anti-pinch unit 1 and the right anti-pinch unit 2 to stop moving; when it is detected that a foreign object is clamped between the left anti-pinch unit 1 and the right anti-pinch unit 2, the magnetic trigger component is connected to the control system, and the control system controls the left anti-pinch unit 1 and the right anti-pinch unit 2 to move in opposite directions to release the foreign object.

[0087] Specifically, the anti-pinch units can be arranged in multiple groups or arranged in left and right directions according to the actual usage scenario, so as to achieve different protection functions and applicability. The right anti-pinch unit 2 can be fixed to enhance the stability and protection effect of the system.

[0088] In addition, this structure can be used in combination with traditional infrared sensors and pressure sensors to enhance the overall protection effect and response capability.

[0089] Example 2

[0090] This embodiment is a further optimization based on the embodiment 1, specifically:

[0091] The left anti-pinch unit 1 further includes a left shell sealing plate assembly 11;

[0092] The magnetic triggering component includes a first moving component 13, a compression spring 123, a second moving component 12, and a sealing pressure plate assembly 14; a horizontal mounting hole is provided inside the left housing cover assembly 11 on a side close to the right anti-pinch unit 2; the first moving component 13, the compression spring 123, and the second moving component 12 are in contact with each other and are sequentially arranged in the horizontal mounting hole from right to left; the second moving component 12 is fixed, the first moving component 13 is movable, and the sealing pressure plate assembly 14 is arranged on the side of the left housing cover assembly 11 close to the right anti-pinch unit 2;

[0093] The first motion component 13 partially protrudes from the right end of the left shell sealing plate component 11 and is connected to the sealing pressure plate component 14. The protruding portion of the first motion component 13 and the sealing pressure plate component 14 constitute the flexible protrusion 3;

[0094] A matching groove matching with the flexible protruding portion 3 is provided on the left side of the right anti-pinch unit 2 , and the magnetic driving component is provided inside the matching groove, and the size of the matching groove is larger than the flexible protruding portion 3 .

[0095] Specifically, when the external pressure is released, the compression spring 123 will quickly return to its initial state and trigger the reset function of the first motion component 13 to ensure that it can quickly return to a normal working state.

[0096] At this time, the flexible protruding portion 3 completely protrudes from the left shell sealing plate assembly 11, ensuring that force can be effectively transmitted and good sealing performance can be maintained when pressure is applied.

[0097] In addition, the size of the mating groove is larger than the flexible protrusion 3, and an appropriate gap is left to ensure that the flexible protrusion 3 is completely inserted into the mating groove when entering the mating groove, thereby preventing accidental contact. The size of this gap can be flexibly adjusted to accommodate anti-pinch objects of different sizes.

[0098] Example 3

[0099] This embodiment is a further optimization based on the second embodiment, specifically:

[0100] The left housing sealing plate assembly 11 includes a left housing sealing plate 112 and a left housing 111 . The horizontal mounting hole is located in the left housing 111 , and the left housing sealing plate 112 is located on the side of the horizontal mounting hole away from the right anti-pinch unit 2 .

[0101] Specifically, the left shell 111 is used to provide structural support, and the horizontal mounting hole is used to install and fix the first moving component 13 and the second moving component 12 of each component. At the same time, a limiting structure is provided inside the horizontal mounting hole to ensure that each component will not exceed the predetermined movement range during operation.

[0102] The first motion component 13 is installed from the left side into the horizontal mounting hole of the left shell 111 and is fixed by a provided limiting structure. Part of the first motion component 13 protrudes from the right side of the left shell 111 .

[0103] The second motion assembly 12 is similarly installed from the left side into the horizontal mounting hole of the left housing 111 and secured by the left housing cover 112. A compression spring 123 forms an elastic support relationship with the first motion assembly 13, providing the necessary support and rebound for the movement of the first motion assembly 13. The compression spring 123 can be of different types depending on actual usage to adjust the sensitivity of the device.

[0104] Example 4

[0105] This embodiment is a further optimization based on the embodiment 3, specifically:

[0106] The first moving assembly 13 includes a first upper sealing plate 131, a first conductive terminal 133, a first wire, a first terminal, a first conductive layer 136, a first insulating layer 137, a first magnetic element 138, a first moving component housing 139, a second magnetic element 134, and a first lower sealing plate 135.

[0107] A transverse through hole is provided inside the first moving component housing 139, and a first lower sealing plate 135 and a first upper sealing plate 131 are respectively sealed at the left and right ends of the transverse through hole;

[0108] A first magnetic mounting hole for mounting and limiting the second magnetic element 134 is provided in the transverse through hole near the first lower sealing plate 135 ;

[0109] A second magnetic mounting hole is provided on one side of the transverse through hole near the first upper sealing plate 131. The first conductive layer 136, the first insulating layer 137, and the first magnetic element 138 are arranged in sequence from right to left. The three are integrated into one body and slidably arranged in the second magnetic mounting hole. The first conductive terminal 133 is fixedly provided on the left side of the first upper sealing plate 131. The first conductive terminal 133 is connected to the control system via a first wire and a first terminal provided at the end of the first wire.

[0110] The first magnetic element 138 and the second magnetic element 134 have the same magnetic direction, and adjacent ends of the first magnetic element 138 and the second magnetic element 134 attract each other.

[0111] Specifically, the first conductive layer 136 and the first insulating layer 137 ensure effective conduction and safe isolation of current;

[0112] The first magnetic element 138 is sequentially attached to the surface of the first insulating layer 137 and the first conductive layer 136 and is mounted to the left of the second magnetic mounting hole in the first moving component housing 139. The height of the second magnetic mounting hole is greater than the combined thickness of the first magnetic element 138, the first insulating layer 137, and the first conductive layer 136, providing space for the first magnetic element 138 to move horizontally.

[0113] The first moving component housing 139 is provided with a wire outlet hole for leading out the first wire of the internal circuit and the first terminal to facilitate electrical connection and access to external equipment.

[0114] Example 5

[0115] This embodiment is a further optimization based on the embodiment 4, specifically:

[0116] The second moving assembly 12 includes a second upper sealing plate 122, a second shock-absorbing ring, a second conductive terminal 124, a second wire, a second terminal, a second conductive layer 125, a second insulating layer 126, a third magnetic element 127, a second moving component housing 128, a fourth magnetic element 129, and a second lower sealing plate 121;

[0117] A transverse through hole is provided inside the second moving component housing 128, and the second lower sealing plate 121 and the second upper sealing plate 122 are respectively sealed at the left and right ends of the transverse through hole;

[0118] A third magnetic mounting hole for mounting and limiting the fourth magnetic element 129 is provided on one side of the transverse through hole close to the second lower sealing plate 121;

[0119] A fourth magnetic mounting hole is provided on one side of the transverse through hole near the second upper sealing plate 122. The second conductive layer 125, the second insulating layer 126, and the third magnetic element 127 are arranged in sequence from right to left. The three are integrated into one body and slidably arranged in the fourth magnetic mounting hole. The second conductive terminal 124 is fixedly provided on the left side of the second upper sealing plate 122. The second conductive terminal is connected to the control system through a second wire and a second terminal provided at the end of the second wire.

[0120] The third magnetic element 127 and the fourth magnetic element 129 have the same magnetic direction, and the adjacent ends of the third magnetic element 127 and the fourth magnetic element 129 attract each other;

[0121] The compression spring 123 is assembled between the first lower sealing plate 135 and the second upper sealing plate 122 . The compression spring 123 provides support and rebound for the first moving component 13 during movement.

[0122] Example 6

[0123] This embodiment is a further optimization based on the embodiment 5, specifically:

[0124] The first moving assembly 13 further includes a first shock absorbing ring 132 , and the first conductive terminal 133 is fixedly arranged on the left side of the first upper sealing plate 131 through the first shock absorbing ring 132 ;

[0125] The second moving assembly 12 further includes a second shock-absorbing ring, and the second conductive terminal 124 is fixedly disposed on the left side of the second upper sealing plate 122 via the second shock-absorbing ring.

[0126] Example 7

[0127] This embodiment is a further optimization based on the embodiment 5, specifically:

[0128] The sealing pressure plate assembly 14 includes a pressure plate 141 and an elastic sealing plate 142 . The pressure plate 141 is fixed to the protruding portion of the first moving assembly 13 .

[0129] The elastic sealing plate 142 is fixed to the pressure plate 141 and is also fixed to the right side of the left shell 111 . The elastic sealing plate 142 and the left shell 111 form a sealed space.

[0130] Specifically, this design provides a completely sealed space between the left anti-pinch unit 1 and the elastic sealing plate 142, effectively preventing external dust and liquid from entering, ensuring the normal operation of the device and the protection of internal components.

[0131] The elastic sealing plate 142 has excellent softness and deformability, effectively adapting to pressure changes and ensuring excellent sealing performance. In addition, the elastic sealing plate 142 requires minimal force to deform, and the deformed elastic sealing plate 142 can wrap around the pressure plate 141, ensuring that the structure fully functions.

[0132] Example 8

[0133] This embodiment is a further optimization based on the embodiment 7, specifically:

[0134] The right anti-pinch unit 2 includes a right anti-pinch unit housing 21;

[0135] The magnetic drive component includes a fifth magnetic element 22 and a fifth magnetic element sealing plate 23. A receiving groove that cooperates with the sealing pressure plate assembly 14 is provided on the left side of the right anti-pinch unit housing 21. A fifth magnetic mounting hole for installing the fifth magnetic element 22 is provided in the receiving groove. The fifth magnetic element sealing plate 23 is sealed at the opening of the fifth magnetic mounting hole, and the outer wall of the fifth magnetic element sealing plate 23 is flush with the bottom of the receiving groove.

[0136] The centers of the first magnetic element 138 , the second magnetic element 134 , the third magnetic element 127 , the fourth magnetic element 129 and the fifth magnetic element 22 are located on the same straight line and have the same magnetic direction, so they attract each other.

[0137] Working principle:

[0138] As shown in the figure, under normal working conditions, the left anti-pinch unit 1 and the right anti-pinch unit 2 approach each other. When the two are close, the flexible protrusion 3 of the left anti-pinch unit 1 gradually enters the groove inside the right anti-pinch unit shell 21. This process is carried out without the intervention of external force, ensuring that the flexible protrusion 3 is smoothly embedded in the groove. When the attraction between the fifth magnetic element 22 and the first magnetic element 138 inside the right anti-pinch unit 2 is greater than the attraction between the second magnetic element 134 and the first magnetic element 138, the second magnetic element 134 in the first moving component 13 moves to the right. At this time, the first conductive layer 136 contacts the first conductive terminal 133, the circuit is closed, the stop signal is transmitted through the first wire, and the left anti-pinch unit 1 and the right anti-pinch unit 2 stop moving.

[0139] At this point, the attractive force between the fifth magnetic element 22 and the first magnetic element 138 is greater than the attractive force between the second magnetic element 134 and the first magnetic element 138, forming a stable magnetic connection and maintaining a fixed position. The first conductive layer 136 maintains contact with the first conductive terminal, ensuring a closed circuit and continuous signal transmission. This design enables the system to monitor and transmit information in real time during normal operation, ensuring effective protection and system response.

[0140] As the left anti-pinch unit 1 and the right anti-pinch unit 2 move away from each other, the flexible protrusion 3 gradually disengages from the groove of the right anti-pinch unit 2. When the attraction between the fifth magnetic element 22 and the first magnetic element 138 becomes less than the attraction between the second magnetic element 134 and the first magnetic element 138, the first magnetic element 138 moves toward the second magnetic element 134 until it contacts the bottom of the right mounting hole of the first moving component housing 139 and stops. At this point, the first conductive layer 136 is disconnected from the first conductive terminal, breaking the circuit.

[0141] At this time, the attraction between the fifth magnetic element 22 and the first magnetic element 138 is smaller than the attraction between the second magnetic element 134 and the first magnetic element 138 , and the second magnetic element 134 and the first magnetic element 138 form a stable magnetic connection and remain fixed.

[0142] When the left anti-pinch unit 1 and the right anti-pinch unit 2 approach each other, and external force contacts the flexible protrusion 3, the external force gradually increases and exceeds the preset pressure of the compression spring 123, causing the flexible protrusion 3 to drive the first moving assembly 13 to compress the compression spring 123. At this point, when the attraction between the second magnetic element 134 and the third magnetic element 127 is greater than the attraction between the third magnetic element 127 and the fourth magnetic element 129, the third magnetic element 127 in the second moving assembly 12 moves to the right. When the second conductive layer 125 contacts the second conductive terminal, the circuit is closed, and a signal is transmitted through the second conductor. This signal quickly causes the two units to separate, effectively preventing pinching accidents and ensuring the safety of people and objects.

[0143] In the anti-pinch design, even small objects can be effectively protected as long as the size of the object is larger than the gap set by the groove and the flexible protrusion 3. At the same time, the gap can be adjusted according to actual use to meet different application requirements.

Claims

1. A magnetic trigger structure of an anti-pinch device, characterized in that: The invention comprises a left anti-pinch unit (1) and a right anti-pinch unit (2); a magnetic triggering component is provided in the left anti-pinch unit (1), and a magnetic driving component for driving the magnetic triggering component to work is provided in the right anti-pinch unit (2); the magnetic triggering component is electrically connected to a control system via a circuit; when the left anti-pinch unit (1) and the right anti-pinch unit (2) are in a normal closed position, the magnetic triggering component is connected to the control system, and the control system controls the left anti-pinch unit (1) and the right anti-pinch unit (2) to stop moving; When it is detected that a foreign object is clamped between the left anti-pinch unit (1) and the right anti-pinch unit (2), the magnetic triggering member is connected to the control system, and the control system controls the left anti-pinch unit (1) and the right anti-pinch unit (2) to move in opposite directions to release the foreign object.

2. The magnetic trigger structure of the anti-pinch device according to claim 1, characterized in that: The left anti-pinch unit (1) further includes a left shell sealing plate assembly (11); The magnetic triggering component includes a first motion component (13), a compression spring (123), a second motion component (12) and a sealing pressure plate component (14); a horizontal mounting hole is provided inside the left shell sealing plate component (11) on a side close to the right anti-pinch unit (2); the first motion component (13), the compression spring (123) and the second motion component (12) are in contact with each other and are sequentially arranged in the horizontal mounting hole from right to left; the second motion component (12) is fixedly arranged, the first motion component (13) is movably arranged, and the sealing pressure plate component (14) is arranged on a side of the left shell sealing plate component (11) close to the right anti-pinch unit (2); The first motion component (13) partially protrudes from the right end of the left shell sealing plate component (11) and is connected to the sealing pressure plate component (14), and the protruding portion of the first motion component (13) and the sealing pressure plate component (14) constitute a flexible protruding portion (3); A matching groove that matches the flexible protruding portion (3) is provided on the left side of the right anti-pinch unit (2), and the magnetic driving component is provided inside the matching groove, and the size of the matching groove is larger than the flexible protruding portion (3).

3. The magnetic trigger structure of the anti-pinch device according to claim 2, characterized in that: The left housing sealing plate assembly (11) comprises a left housing sealing plate (112) and a left housing (111), the horizontal mounting hole being located in the left housing (111), and the left housing sealing plate (112) being located on a side of the horizontal mounting hole away from the right anti-pinch unit (2).

4. The magnetic trigger structure of the anti-pinch device according to claim 3, characterized in that: The first moving component (13) includes a first upper sealing plate (131), a first conductive terminal (133), a first wire, a first terminal, a first conductive layer (136), a first insulating layer (137), a first magnetic element (138), a first moving component housing (139), a second magnetic element (134), and a first lower sealing plate (135); A transverse through hole is provided inside the first moving component housing (139), and the first lower sealing plate (135) and the first upper sealing plate (131) are respectively sealed and provided at the left and right ends of the transverse through hole; A first magnetic mounting hole for mounting and limiting a second magnetic element (134) is provided in the transverse through hole on one side close to the first lower sealing plate (135); A second magnetic mounting hole is provided on one side of the transverse through hole close to the first upper sealing plate (131); the first conductive layer (136), the first insulating layer (137) and the first magnetic element (138) are sequentially provided from right to left, and the three are integrated into one body and slidably provided in the two magnetic mounting holes; the first conductive terminal (133) is fixedly provided on the left side of the first upper sealing plate (131); the first conductive terminal (133) is connected to the control system via a first wire and a first terminal provided at the end of the first wire; The first magnetic element (138) and the second magnetic element (134) have the same magnetic direction, and the adjacent ends of the first magnetic element (138) and the second magnetic element (134) attract each other.

5. The magnetic trigger structure of the anti-pinch device according to claim 4, characterized in that: The second moving component (12) includes a second upper sealing plate (122), a second shock-absorbing ring, a second conductive terminal (124), a second wire, a second terminal, a second conductive layer (125), a second insulating layer (126), a third magnetic element (127), a second moving component housing (128), a fourth magnetic element (129) and a second lower sealing plate (121); A transverse through hole is provided inside the second moving component housing (128), and the second lower sealing plate (121) and the second upper sealing plate (122) are respectively sealed and provided at the left and right ends of the transverse through hole; A third magnetic mounting hole for mounting and limiting a fourth magnetic element (129) is provided on one side of the transverse through hole close to the second lower sealing plate (121); A fourth magnetic mounting hole is provided on one side of the transverse through hole close to the second upper sealing plate (122); the second conductive layer (125), the second insulating layer (126) and the third magnetic element (127) are sequentially provided from right to left, and the three are integrated into one body and slidably provided in the fourth magnetic mounting hole; the second conductive terminal (124) is fixedly provided on the left side of the second upper sealing plate (122); the second conductive terminal (124) is connected to the control system via a second wire and a second terminal provided at the end of the second wire; The third magnetic element (127) and the fourth magnetic element (129) have the same magnetic direction, and adjacent ends of the third magnetic element (127) and the fourth magnetic element (129) attract each other; The compression spring (123) is assembled between the first lower sealing plate (135) and the second upper sealing plate (122), and the compression spring (123) provides support and rebound for the first motion component (13) during motion.

6. The magnetic trigger structure of the anti-pinch device according to claim 5, characterized in that: The first motion component (13) further comprises a first shock-absorbing ring (132), and the first conductive terminal (133) is fixedly arranged on the left side of the first upper sealing plate (131) via the first shock-absorbing ring (132); The second motion component (12) further includes a second shock-absorbing ring, and the second conductive terminal (124) is fixedly arranged on the left side of the second upper sealing plate (122) via the second shock-absorbing ring.

7. The magnetic trigger structure of the anti-pinch device according to claim 6, characterized in that: The sealing pressure plate assembly (14) comprises a pressure plate (141) and an elastic sealing plate (142), and the pressure plate (141) is fixed to the protruding portion of the first motion assembly (13).

8. The magnetic trigger structure of the anti-pinch device according to claim 7, characterized in that: The elastic sealing plate (142) is fixed to the pressure plate (141) and is also fixed to the right side of the left shell (111). The elastic sealing plate (142) and the left shell (111) form a sealed space.

9. The magnetic trigger structure of the anti-pinch device according to claim 8, characterized in that: The right anti-pinch unit (2) comprises a right anti-pinch unit housing (21); The magnetic driving component includes a fifth magnetic element (22) and a fifth magnetic element sealing plate (23); a receiving groove cooperating with the sealing pressure plate assembly (14) is provided on the left side of the right anti-pinch unit housing (21); a fifth magnetic mounting hole for mounting the fifth magnetic element (22) is provided in the receiving groove; the fifth magnetic element sealing plate (23) is sealingly provided at the opening of the fifth magnetic mounting hole; and the outer wall of the fifth magnetic element sealing plate (23) is flush with the bottom of the receiving groove.

10. The magnetic trigger structure of the anti-pinch device according to claim 9, characterized in that: The centers of the first magnetic element (138), the second magnetic element (134), the third magnetic element (127), the fourth magnetic element (129) and the fifth magnetic element (22) are located on the same straight line, have the same magnetic direction, and attract each other.

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