Magnetic trigger structure of anti-pinch device

Abstract

The invention discloses a magnetic trigger structure of an anti-pinch device, and relates to the technical field of safety protection devices, the magnetic trigger structure 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 according to actual use scenes or arranged in the left-right direction, 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 present invention 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] In modern mechanical equipment, the application of safety protection devices is crucial, especially in places such as elevator doors and automatic doors, where anti-pinch accidents occur from time to time and may cause injuries. Traditional anti-pinch devices often use mechanical structures or simple photoelectric sensors. Although these devices can provide certain protection, they are insufficient in real-time response and accuracy. Anti-pinch devices often use infrared sensing technology or pressure sensing technology.

[0003] Infrared sensors are widely used in anti-pinch devices to detect obstacles and prevent pinching accidents. However, traditional infrared technology has limitations in scanning range and accuracy. Infrared sensors usually rely on linear scanning and cannot fully cover the entire area, resulting in the existence of certain blind spots. This limitation means that in places such as elevator doors and automatic doors, when small objects approach, the infrared system may not be able to identify and respond in time, thus posing a safety hazard.

[0004] Since pressure sensors are widely used in anti-pinch devices, when a foreign object is detected during use, the anti-pinch device performs reverse operation. However, traditional anti-pinch devices may be too sensitive in some cases, resulting in frequent false triggering, thus affecting the normal operation of the equipment.

[0005] In addition, existing anti-pinch technology is usually inflexible and cannot adapt to different working environments and application requirements. In some special occasions, such as high humidity and other environmental conditions, the performance of traditional anti-pinch devices may decline, increasing safety hazards. Summary of the invention

[0006] The purpose of the present invention is to solve the technical problems of low reliability, easy mis-triggering and inapplicability to complex working environments of existing anti-pinch devices, and to provide a magnetic trigger structure for an anti-pinch device. The device uses a magnetic trigger mechanism, has high sensitivity and reliability, and can effectively prevent pinching accidents, and can adapt to various complex working environments, and can improve overall safety and operating efficiency.

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

[0008] The present invention 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 arranged in the left anti-pinch unit, and a magnetic driving component cooperating with the magnetic trigger component is arranged 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 normal 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 anti-pinch units and right anti-pinch units) 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 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 component; a horizontal mounting hole is arranged inside the left shell sealing plate component near 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 arranged, the first moving component is slidably arranged, and the sealing pressure plate component is arranged on the left shell sealing plate component near the right anti-pinch unit;

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

[0014] A matching groove matching with the flexible protruding portion is arranged 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 a 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 matching groove is larger than the flexible protrusion, and an appropriate gap is left to ensure that the flexible protrusion enters the matching groove completely to avoid accidental touch. The size of this gap can be flexibly adjusted to adapt to 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 outer shell is used to provide structural support, the horizontal mounting holes are used to install and fix various components (the first moving component and the second moving component), and a limiting structure is provided inside the horizontal mounting holes to ensure that each component does not exceed the predetermined movement range during operation.

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

[0021] The second motion component is also installed from the left side into the horizontal mounting hole of the left housing and fixed by the left housing cover plate. The compression spring forms an elastic support relationship with the first motion component to provide necessary support and rebound for the movement of the first motion component. The compression spring can use different types of springs according to actual use to adjust the sensitivity of the device.

[0022] In one embodiment, the first moving component 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 and arranged at left and right ends of the transverse through hole;

[0024] A first magnetic mounting hole for mounting and limiting the 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 arranged 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 arranged on the left side of the first upper sealing plate, and the first conductive terminal is connected to the control system through the first wire and the first wiring terminal arranged 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 with the first insulating layer and the first conductive layer on its surface and is mounted on the left side of the second magnetic mounting hole of the first moving component housing. The height of the second magnetic mounting hole is greater than the sum of the thicknesses of the first magnetic element, the first insulating layer and the first conductive layer, providing space for the first magnetic element to move left and right.

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

[0030] In one embodiment, the second moving component 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 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 sealing plate;

[0033] A fourth magnetic mounting hole is arranged 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 arranged on the left side of the second upper sealing plate, and the second conductive terminal is connected to the control system through a second wire and a second wiring terminal arranged at the end of the second wire;

[0034] The magnetic directions of the third magnetic element and the fourth magnetic element are the same, 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 moving component during movement.

[0036] In one embodiment, the first motion assembly further includes a first damping ring, and the first conductive terminal is fixedly arranged on the left side of the first upper sealing plate through the first damping 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, and 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 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 the deformation process, and the deformed elastic sealing plate can wrap the pressure plate. This feature ensures that the function of the structure is fully utilized.

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

[0043] The magnetic driving 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 working conditions, the left anti-pinch unit and the right anti-pinch unit are close to each other. When the two are close, the flexible protrusion of the left anti-pinch unit gradually enters the groove inside the shell of the right anti-pinch unit. This process is carried out without the intervention of external force to ensure 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, the stop signal is transmitted through the first wire, and the left anti-pinch unit and the right anti-pinch unit stop moving.

[0047] At this time, 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, and the fifth magnetic element and the first magnetic element form a stable magnetic connection and remain fixed. The first conductive layer is always in contact with the first conductive terminal, thereby ensuring that the circuit is closed and can continue to send signals outward. This design enables the system to monitor and transmit information in real time under normal working conditions, ensuring effective protection functions and system response.

[0048] When the left anti-pinch unit and the right anti-pinch unit move away from each other, the flexible protrusion gradually disengages from the groove of the right anti-pinch unit. When the attraction between the fifth magnetic element and the first magnetic element is 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 touches the bottom of the right mounting hole of the first moving component housing and stops. At this time, the first conductive layer is disconnected from the first conductive terminal, and the circuit is disconnected.

[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 anti-pinch unit and the right anti-pinch unit are close to each other, when the external force contacts the flexible protrusion, the external force gradually increases and exceeds the preset pressure of the compression spring, and the flexible protrusion drives the first moving component to compress the compression spring. At this time, when the attraction between the second magnetic element and the third magnetic element is greater than the attraction between the third magnetic element and the fourth magnetic element, the third magnetic element in the second moving component moves to the right. After the second conductive layer contacts the second conductive terminal, the circuit is closed and the signal is transmitted through the second wire. This signal will quickly cause the two side units to separate, thereby effectively preventing the occurrence of 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 size of 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 meet different application requirements.

[0052] The beneficial effects of the present invention are as follows:

[0053] 1. The anti-pinch units can be arranged in multiple groups (multiple groups of left anti-pinch units and right anti-pinch units) or in the left and right directions according to the actual usage scenarios, so as to achieve different protection functions and applicability. The right anti-pinch unit can be fixed to enhance the stability and protection effect of the system. 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.

[0054] 2. 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. At this time, the flexible protrusion completely protrudes from the left shell sealing plate component to ensure that the force can be effectively transmitted and good sealing performance can be maintained when pressure is applied. In addition, the size of the matching groove is larger than the flexible protrusion, and an appropriate gap is left to ensure that the flexible protrusion completely enters the matching groove when entering the matching groove to avoid accidental touch. The size of this gap can be flexibly adjusted to accommodate anti-pinch objects of different 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 external dust and liquid from entering, 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 the deformation process, and the deformed elastic sealing plate can wrap the pressure plate. This feature ensures that the function of the structure is fully utilized. BRIEF DESCRIPTION OF THE DRAWINGS

[0058] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces 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 related drawings can be obtained based on these drawings without creative work.

[0059] Figure 1 It is a schematic diagram of the structure of the present invention;

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

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

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

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

[0064] Figure 6 is an exploded view of the seal 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 a first motion assembly;

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

[0068] Fig.10 is a cross-sectional view of the present invention in an open state;

[0069] Fig.11 It is a cross-sectional view in the closed state;

[0070] Fig.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 side 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- Sealing pressure plate assembly;

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

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

[0081] In order to make the technical problems, technical solutions and technical effects of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part 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 here 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 invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0083] It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings. In addition, the terms "first", "second", etc. are only used to distinguish the description and cannot 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 inventive product is usually placed when used. 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, and therefore 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 arranged in the left anti-pinch unit 1, and a magnetic driving component for driving the magnetic trigger component to work is arranged in the right anti-pinch unit 2, and the magnetic trigger component is electrically connected to the control system through a line, and 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 the opposite direction to release the foreign object.

[0087] Specifically, the anti-pinch units can be arranged in multiple groups or in left and right directions according to actual usage scenarios, 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 responsiveness.

[0089] Example 2

[0090] This embodiment is further optimized on the basis of embodiment 1, specifically:

[0091] The left anti-pinch unit 1 further includes a left housing 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 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 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 fixedly arranged, the first moving 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;

[0093] The first moving 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 part of the first moving component 13 and the sealing pressure plate component 14 constitute a flexible protruding part 3;

[0094] A matching groove matching with the flexible protruding portion 3 is arranged on the left side of the right anti-pinch unit 2 , 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 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 side housing 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 matching groove is larger than the flexible protrusion 3, and an appropriate gap is left to ensure that the flexible protrusion 3 completely enters the matching groove when entering the matching groove to avoid accidental touch. The size of this gap can be flexibly adjusted to adapt to anti-pinch objects of different sizes.

[0098] Example 3

[0099] This embodiment is further optimized on the basis of embodiment 2, 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 each component, the first moving component 13 and the second moving component 12. At the same time, a limiting structure is provided inside the horizontal mounting hole to ensure that each component does not exceed the predetermined movement range during operation.

[0102] The first moving component 13 is installed in the horizontal installation hole of the left shell 111 from the left side and is fixed by the provided limiting structure. The first moving component 13 partially protrudes from the right side of the left shell 111 .

[0103] The second motion component 12 is also installed from the left side into the horizontal installation hole of the left housing 111 and fixed by the left housing cover 112. The second motion component 12 forms an elastic support relationship with the first motion component 13 through the compression spring 123, providing necessary support and rebound for the movement of the first motion component 13. The compression spring 123 can use different types of springs according to actual use conditions to adjust the sensitivity of the device.

[0104] Example 4

[0105] This embodiment is further optimized on the basis of embodiment 3, specifically:

[0106] The first moving component 13 includes a first upper sealing plate 131, a first conductive terminal 133, a first wire, a first connecting 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 and disposed 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 on one side close to the first lower sealing plate 135;

[0109] A second magnetic mounting hole is arranged 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 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 arranged on the left side of the first upper sealing plate 131. The first conductive terminal 133 is connected to the control system through a first wire and a first wiring terminal arranged 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 has the first insulating layer 137 and the first conductive layer 136 attached to its surface in sequence and is mounted on the left side of the second magnetic mounting hole of the first moving component housing 139. The height of the second magnetic mounting hole is greater than the sum of the thicknesses 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 left and right.

[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 wiring terminal to facilitate electrical connection and access to external equipment.

[0114] Example 5

[0115] This embodiment is further optimized on the basis of embodiment 4, specifically:

[0116] The second moving component 12 includes a second upper sealing plate 122, a second damping ring, a second conductive terminal 124, a second wire, a second wiring 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 and arranged 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 arranged on one side of the transverse through hole close to the second upper sealing plate 122, and a second conductive layer 125, a second insulating layer 126 and a third magnetic element 127 are arranged in sequence from right to left, and the three are integrated into one body and slidably arranged in the fourth magnetic mounting hole, and a second conductive terminal 124 is fixedly arranged on the left side of the second upper sealing plate 122, and the second conductive terminal is connected to the control system through a second wire and a second wiring terminal arranged 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 , and the compression spring 123 provides support and rebound for the first moving component 13 during movement.

[0122] Example 6

[0123] This embodiment is further optimized on the basis of Embodiment 5, specifically:

[0124] The first moving assembly 13 further includes a first damping 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 damping 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 further optimized on the basis of 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, can effectively adapt to pressure changes, and ensure excellent sealing performance. In addition, the elastic sealing plate 142 requires very little force during deformation, and the deformed elastic sealing plate 142 can wrap the pressure plate 141, which ensures that the structure function is fully utilized.

[0132] Example 8

[0133] This embodiment is further optimized on the basis of Embodiment 7, specifically:

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

[0135] 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 arranged 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 arranged 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, have the same magnetic direction, and 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 are close to 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 housing 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 time, the attraction between the fifth magnetic element 22 and the first magnetic element 138 is greater than the attraction between the second magnetic element 134 and the first magnetic element 138, and the fifth magnetic element 22 and the first magnetic element 138 form a stable magnetic connection and remain fixed. The first conductive layer 136 is always in contact with the first conductive terminal, thereby ensuring that the circuit is closed and can continuously send signals to the outside. This design enables the system to monitor and transmit information in real time under normal working conditions, ensuring effective protection functions and system response.

[0140] When 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 is 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 touches the bottom of the right mounting hole of the first moving component housing 139 and stops. At this time, the first conductive layer 136 is disconnected from the first conductive terminal, and the circuit is disconnected.

[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 are close to each other, when the external force contacts the flexible protrusion 3, the external force gradually increases and exceeds the preset pressure of the compression spring 123, and the flexible protrusion 3 drives the first motion component 13 to compress the compression spring 123. At this time, 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 motion component 12 moves to the right. After the second conductive layer 125 contacts the second conductive terminal, the circuit is closed and the signal is transmitted through the second wire. This signal will quickly cause the two side units to separate, thereby effectively preventing the occurrence of 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 provided 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 arranged in the left anti-pinch unit (1), and a magnetic driving component for driving the magnetic triggering component to work is arranged in the right anti-pinch unit (2); the magnetic triggering 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 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 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.

2. The magnetic trigger structure of the anti-pinch device according to claim 1, characterized in that: The left anti-pinch unit (1) further comprises a left shell sealing plate assembly (11); The magnetic triggering component comprises a first moving component (13), a compression spring (123), a second moving component (12) and a sealing pressure plate component (14); a horizontal mounting hole is arranged inside the left shell sealing plate component (11) near 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 arranged in sequence from right to left in the horizontal mounting hole; the second moving component (12) is fixedly arranged, the first moving component (13) is movably arranged, and the sealing pressure plate component (14) is arranged on the left shell sealing plate component (11) near the right anti-pinch unit (2); The first moving 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 part of the first moving component (13) and the sealing pressure plate component (14) constitute a flexible protruding part (3); The left side of the right anti-pinch unit (2) is provided with a matching groove matching with the flexible protruding portion (3), the magnetic driving component is arranged 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 side housing sealing plate assembly (11) comprises a left side housing sealing plate (112) and a left side housing (111), the horizontal mounting hole is located in the left side housing (111), and the left side housing sealing plate (112) is located on the side of the horizontal mounting hole away from the right side 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) comprises a first upper sealing plate (131), a first conductive terminal (133), a first wire, a first connecting 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 arranged at 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 arranged 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 arranged in sequence from right to left, and the three are integrated into one body and slidably arranged in the two magnetic mounting holes; the first conductive terminal (133) is fixedly arranged on the left side of the first upper sealing plate (131); the first conductive terminal (133) is connected to a control system via a first wire and a first wiring terminal arranged 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) comprises a second upper sealing plate (122), a second shock absorbing ring, a second conductive terminal (124), a second wire, a second connecting 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 arranged at 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 arranged 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 arranged in sequence from right to left, and the three are integrated into one body and slidably arranged in the fourth magnetic mounting hole; the second conductive terminal (124) is fixedly arranged 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 wiring terminal arranged at the end of the second wire; The magnetic directions of the third magnetic element (127) and the fourth magnetic element (129) are the same, and the adjacent ends of the third magnetic element (127) and the fourth magnetic element (129) attract each other; The compression spring (123) is installed 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 moving component (13) during movement.

6. The magnetic trigger structure of the anti-pinch device according to claim 5, characterized in that: The first moving 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 moving component (12) also 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 moving 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 the fifth magnetic element (22) and the fifth magnetic element sealing plate (23); a receiving groove cooperating with the sealing pressure plate assembly (14) is arranged 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 arranged in the receiving groove; the fifth magnetic element sealing plate (23) is sealingly arranged 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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