Trigger switch assembly and lifting cabinet body

Abstract

The invention discloses a trigger switch assembly and a lifting cabinet body, the trigger switch assembly comprises a first rotating piece, a second rotating piece, an elastic piece, a switch and a shell, and the trigger switch assembly is arranged in the lifting cabinet body. Whether a human body or an object is clamped or is about to be clamped is judged through second acting force among the first rotating piece, the second rotating piece and the elastic piece, and the first rotating piece and the second rotating piece are timely pulled to move from the first relative position to the second relative position through the elastic piece. When the cabinet body moves to a preset position of the trigger switch assembly, the switch is triggered, and the clamping force is rapidly reduced, so that a human body or an object cannot be damaged by clamping, and the cabinet body has the capabilities of high sensitivity, rapid response and intelligent pre-judgment, can sense in time when the cabinet body is in contact with an obstacle, can rapidly reduce the clamping force at the moment, and is convenient to use. The trigger switch assembly is arranged in the lifting cabinet body, so that the situation that a human body is injured by clamping or articles are damaged by clamping is effectively avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of household appliances, and in particular to an anti-pinch protection trigger switch component and an anti-pinch lifting cabinet. Background Art

[0002] With the growing demand for smart and convenient modern home life, electric lift cabinets have been widely used as an innovative storage solution in kitchens, bedrooms, offices and other scenarios. This type of lift cabinet not only improves the efficiency of space utilization, but also enables easy storage and retrieval of items through electric drive, greatly enhancing the user experience. However, while enjoying the convenience brought by electric lift cabinets, its safety issues have gradually emerged, especially in terms of anti-pinch protection, which has become a technical bottleneck that needs to be solved urgently.

[0003] The anti-pinch mechanism of the mainstream electric lift cabinets on the market currently relies on traditional electric control sensing technology, that is, it determines whether a clamping event occurs by detecting the relative motion state between the cabinet body and the shell or other fixed structures. The essence of this method is a "post-processing" strategy, that is, the protection mechanism is activated only when the clamping event has occurred or is about to occur, such as emergency stop of the lifting action. However, this lag leads to limited effect in preventing people from being pinched or objects from being damaged, especially in the face of emergencies or sensitive objects, it is often difficult to achieve the expected protection effect.

[0004] Specifically, the anti-pinch sensing systems in the prior art mostly rely on sensors to monitor the movement trajectory of the cabinet, but are often unable to accurately predict and prevent the occurrence of clamping behavior in advance due to the limitations of sensor accuracy, response speed and installation location. Once the cabinet comes into contact with obstacles such as human body parts, fragile objects, etc. during the lifting process, even if the anti-pinch system can respond quickly and stop the movement, the damage or loss caused at this time is often difficult to recover.

[0005] Therefore, the market urgently needs an anti-pinch mechanism for electric lift cabinets that can prevent pinching accidents from the source. This mechanism should have high sensitivity, fast response, and intelligent prediction capabilities. It can instantly sense when the cabinet comes into contact with an obstacle, and can quickly reduce the clamping force at this time to effectively avoid pinching people or damaging objects. At the same time, the mechanism should also have good adaptability and reliability, be able to adapt to different usage scenarios and complex environments, and ensure stable and reliable operation under various conditions.

[0006] To sum up, the development of a new anti-pinch mechanism for electric lift cabinets is not only of great significance for improving product safety and ensuring user safety, but is also the key to promoting technological progress in the electric lift cabinet industry and meeting market demand. Summary of the invention

[0007] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a trigger switch assembly and a lifting cabinet.

[0008] In order to achieve the above object, the technical solution of the present invention is:

[0009] A trigger switch assembly is provided to control the lifting and lowering movement of the cabinet body and the cabinet door through a rotating member, including:

[0010] A first rotating member 100 and a second rotating member 200, wherein the first rotating member 100 and the second rotating member 200 rotate coaxially, and a relative rotation space is provided between the first rotating member 100 and the second rotating member 200, forming a first relative position 310 and a second relative position 320;

[0011] An elastic member 400, wherein the elastic member 400 is disposed between the first rotating member 100 and the second rotating member 200, so that the two have a movement tendency from the first relative position 310 to the second relative position 320;

[0012] The switch 500 is triggered when the first rotating member 100 and the second rotating member 200 rotate from the first relative position 310 to the second relative position 320;

[0013] The housing 900 is used to encapsulate the first rotating member 100, the second rotating member 200, the elastic member 400 and the switch 500;

[0014] The first rotating member 100 and the second rotating member 200 have a first rotating direction and a second rotating direction, which are opposite to each other;

[0015] When the first rotating member 100 and the second rotating member 200 rotate in the first rotation direction, the two are in the first relative position 310, and the elastic member 400 is in a stretched state;

[0016] When the first rotating member 100 and the second rotating member 200 rotate in the second rotating direction, the two are in the first relative position 310, and the first rotating member 100 is subjected to the first force and the second rotating member 200 is subjected to the second force to maintain the elastic member 400 in a stretched state;

[0017] When the second force decreases or disappears, the elastic member 400 pulls the first rotating member 100 and the second rotating member 200 to move from the first relative position 310 to the second relative position 320 until the switch 500 is triggered.

[0018] When the second force decreases or disappears, it means that the human body or object partially or completely offsets the second force, that is, the human body or the object may be clamped or about to be clamped, and the elastic member 400 of the trigger switch assembly will promptly pull the first rotating member 100 and the second rotating member 200 from the first relative position 310 to the second relative position 320, and when they move to the preset position of the trigger switch assembly, the switch will be triggered.

[0019] The reduction or disappearance of the force is used to determine whether a person or object is about to be clamped. Due to the reduction or disappearance of the second force, the clamping force decreases rapidly, so the person or object will not be injured or damaged. It has high sensitivity, fast response and intelligent prediction capabilities. It can sense in time when the cabinet comes into contact with an obstacle, and at this time it can quickly reduce the clamping force, effectively avoiding the situation of pinching people or damaging objects.

[0020] Since the first rotating member 100 and the second rotating member 200 often rotate during operation and their structures are uneven, friction will occur between other components during actual use. Long-term use will cause damage to the components and affect the normal operation of the components. Therefore, the first rotating member 100, the second rotating member 200, the elastic member 400 and the switch 500 are encapsulated in the shell 900 as an external protective layer of the component to isolate them from the external environment to prevent the external environment from affecting the normal operation of the component. The shell 900 can also support the rotating member to facilitate the rotation of the rotating member and improve the overall stability of the component. In addition, the external structure of the trigger switch component is simplified by the encapsulation of the shell 900.

[0021] The trigger switch assembly requires two rotating parts to rotate in coordination with each other and be maintained in a balanced relative position by the elastic part 400. If the two rotating parts are separately arranged, the coordination and control of their rotation will become complicated, and the structure will become correspondingly complicated and messy, and it will also lead to an increase in the volume and weight of the lifting cabinet, which is not suitable for home use. Therefore, the first rotating part 100 and the second rotating part 200 are arranged as winding disk structures that fit each other, and a first winding groove 110 and a second winding groove 210 are arranged. The first winding groove 110 and the second winding groove 210 are respectively wound with a first steel wire 120 and a second steel wire 220, and the winding directions are opposite. The pulling force applied by the first steel wire 120 to the first rotating part 100 is the first force, and the pulling force applied by the second steel wire 220 to the second rotating part 200 is the second force.

[0022] Since the functions and principles of the first rotating member 100 and the second rotating member 200 are different, the first rotating member 100 needs to support the lifting movement of the entire cabinet body, while the second rotating member 200 is responsible for the short-distance lifting movement of the cabinet door. The lifting movements of the two have an obvious travel difference. The first rotating member 100 requires a longer steel wire length and a larger winding groove diameter than the second rotating member 200. Therefore, the first winding groove 110 is spirally arranged on the side of the first rotating member 100, and the second rotating member 200 is provided with a protruding winding column 230 on the side away from the first rotating member 100. The diameter of the winding column 230 is smaller than that of the first rotating member 100 and the second rotating member 200, and is coaxially arranged with the first rotating member 100 and the second rotating member 200;

[0023] The anti-pinch setting of the trigger switch assembly is achieved by offsetting part or all of the second force, and the second force is applied to the second rotating member 200 through the second steel wire 220. During normal operation, the second steel wire 220 is in a tensioned state. When the second force is offset, the cabinet door quickly slows down and stops, and a certain degree of bending occurs at the end of the winding groove of the second steel wire 220. Therefore, a release space for pulling needs to be provided at the end of the second winding groove 210. The second winding groove 210 is spirally arranged on the side of the winding column 230 and extends from the bottom of the winding column 230 to the one side of the second rotating member 200. The extension section 211 of the second winding groove 210 on the one side of the second rotating member 200 is hook-shaped, and its end forms an inward bending section 212. The hook-shaped extension section 211 of the winding groove can provide a release space for the second steel wire 220 to form a buffer.

[0024] When the first rotating member 100 and the second rotating member 200 rotate, they do not rotate freely, but the degree of rotation of the rotating member needs to be determined according to the movement of the cabinet body and the cabinet door of the lifting cabinet. Therefore, a penetrating limit groove 130 is provided on the first rotating member 100, and a limit column 230 is provided on the other side of the second rotating member 200 that is attached to the first rotating member 100. The limit column 230 passes through the limit groove 130 and can slide in the limit groove 130, which has a limiting effect on the first rotating member 100 and the second rotating member 200.

[0025] The rotation directions of the first rotating member 100 and the second rotating member 200 are opposite. When the two rotating members rotate, the force they receive will maintain the elastic member in a stretched state. At this time, the first rotating member and the second rotating member are in a balanced first relative position. When the force received by the second rotating member decreases or disappears, the rotating member needs to pull the two rotating members to move to the second relative position until the switch is triggered. Therefore, the limit groove 130 is set to an arc structure, and the restrictions on the limit column 230 at both ends form the first relative position 310 and the second relative position 320, which constitute the action part of the elastic member 400, thereby ensuring the directional rotation of the first rotating member 100 and the second rotating member 200.

[0026] Due to the nature of the lifting cabinet being used at home, its own weight should not be too heavy, and the trigger switch assembly embedded in the lifting cabinet also needs to be as light and compact as possible. The steel wire of the cabinet body is relatively long, and correspondingly more layers of winding grooves need to be set up. Therefore, the winding disk of the first rotating part 100 has a certain thickness, and a floating trigger mechanism 600 can be used. The switch 500 is arranged on the side of the first rotating part 100 away from the second rotating part 200, and the floating trigger mechanism 600 is arranged between the switch 500 and the first rotating part 100. When the first rotating part 100 and the second rotating part 200 rotate from the first relative position 310 to the second relative position 320, the floating trigger mechanism 600 is pushed to trigger the switch 500. The floating trigger mechanism 600 is arranged inside the winding disk surface of the rotating part. The structure of the trigger switch assembly is more compact and lightweight, which provides convenience for home use.

[0027] The floating trigger mechanism 600 includes a floating ring 610 and a reset mechanism 620. The floating ring 610 is provided with a trigger arm 611 on one side facing the switch 500, and a trigger foot 612 on the other side facing the first rotating member 100. The trigger foot 612 penetrates the first rotating member 100 to the other side of the first rotating member 100. A top block 240 is also provided on the other side of the second rotating member 200 that is in contact with the first rotating member 100. When the first rotating member 100 and the second rotating member 200 are in the second relative position 320, the top block 240 slides to the bottom of the trigger foot 612, lifts the floating ring 610 away from the first rotating member 100, and causes the trigger arm 611 to trigger the switch 500. When the first rotating member 100 and the second rotating member 200 are in the first relative position 310, the top block 240 separates from the trigger foot 612, and the reset mechanism 620 presses the floating ring 610 to be close to the first rotating member 100, thereby releasing the trigger arm 611 from triggering the switch 500.

[0028] In order to prevent people and objects from being pinched or damaged during the movement of the lifting cabinet, the anti-pinch function of the lifting cabinet needs to be very stable and timely to ensure its safety. The floating trigger is when the rotating part is in the second relative position 320, the top block 240 slides to the bottom of the trigger foot 612, the top block 240 lifts the trigger foot 612 of the floating ring 610, the floating ring 610 floats upward as a whole, and the trigger arm 611 covers the photosensitive element of the floating trigger mechanism 600, thereby completing the triggering of the switch. When the rotating part is in the first relative position 310, the top block is separated from the trigger foot 612, the floating ring 610 floats downward as a whole, and the floating ring 610 is pressed to the side of the first rotating part 100 by the reset mechanism, and the photosensitive element is exposed again, that is, the switch is released. The floating trigger ensures that the anti-pinch function is in a stable state, thereby improving the safety of the lifting cabinet.

[0029] The movement of the floating ring 610 needs to be restricted to a certain extent, otherwise the floating ring 610 may be skewed or fall when moving up and down. Therefore, a floating cavity 140 for accommodating the floating ring 610 is formed on one side of the first rotating member 100, which can limit the floating ring 610 to move only in the floating cavity 140, thereby ensuring the normal operation of the switch trigger. When the floating ring 610 moves downward, that is, when the switch is released, the floating ring 610 cannot automatically and quickly reset to the bottom of the floating cavity 140, and the trigger arm 611 will partially cover the photosensitive element, resulting in a malfunction of the switch release function. Therefore, a pressing groove 150 is formed on the outside of the floating cavity 140, and when resetting, the floating ring 610 is quickly and completely reset to the bottom of the floating cavity 140, thereby quickly releasing the switch trigger.

[0030] When the top block 240 lifts the trigger pin of the floating ring 610, the entire floating ring 610 needs to be lifted steadily and at a uniform height, and the floating ring 610 has a large diameter. Setting a single or uneven trigger pin 612 on the floating ring 610 will cause the floating ring to be in an unbalanced floating state. Therefore, the floating ring 610 is provided with a plurality of trigger pins 612, and the plurality of trigger pins 612 are evenly distributed on the floating ring 610. The downward movement of the floating ring 610 also needs to ensure that the entire floating ring 610 is in a stable descending state. Therefore, the floating ring 610 is provided with a plurality of outwardly extending pressing arms 613 at positions corresponding to the plurality of trigger pins 612, and the pressing arms 613 extend from the floating cavity 140 to the pressing groove 150; the reset mechanism 620 includes a plurality of compression springs corresponding to the pressing arms 613, which are distributed at the ends of the pressing arms 613 in the pressing groove 150, so that the up and down movement of the floating ring 610 is in a normal and stable state, and the stability of the triggering of the switch 500 is ensured.

[0031] The present application also includes a lifting cabinet, including an outer shell 710, a lifting cabinet 720, a cabinet door 730 and a lifting mechanism 740. The outer shell 710 is open at the front, and cabinet slide grooves 711 and cabinet door slide grooves 712 are provided on both sides to support the lifting and lowering of the lifting cabinet 720 and the cabinet door 730 respectively. The lifting mechanism 740 is used to drive the lifting cabinet 720 and the cabinet door 730 to rise and fall relative to the outer shell 710.

[0032] The trigger switch assembly is also arranged in the lifting cabinet, and the lifting and anti-pinch functions of the lifting cabinet and the cabinet door of the lifting cabinet are controlled by the trigger switch assembly. One end of the first steel wire 120 is connected to the lifting mechanism 740, and the other end is connected to the lifting cabinet 720; one end of the second steel wire 220 is fixed on the second rotating part 200, and the other end is connected to the cabinet door 730.

[0033] When the first rotating member 100 and the second rotating member 200 rotate in the first rotation direction, the lifting cabinet 720 descends and the cabinet door 730 rises; when the first rotating member 100 and the second rotating member 200 rotate in the second rotation direction, the lifting cabinet 720 rises and the cabinet door 730 descends. The first force is the pulling force of the lifting mechanism 740 pulling the first steel wire 120, and the second force is the pulling force of the gravity of the cabinet door 730 pulling the second steel wire 220. Both rotating members are in a balanced force state and will not trigger the switch assembly.

[0034] When the lifting cabinet 720 is about to or has clamped a person or an object during movement, the second force acting on the cabinet door 730 is increased by the force brought by the person or the object in addition to its own gravity. The cabinet door 730 is connected to one end of the second steel wire 220, and the other end of the second steel wire 220 is connected to the second rotating member 200. At this time, the force acting on the second rotating member 200 is reduced or disappears, and the stretched state of the elastic member 400 is broken, driving the two rotating members to move to the second relative position 320, and the floating ring 610 will be lifted up by the top block 240, and the switch will be triggered by the trigger arm 611, thereby starting the anti-pinch function.

[0035] The items in the lifting cabinet 720 may accidentally slide down due to the startup of the lifting cabinet 720, the unreasonable placement of the items, etc., and the cabinet body and cabinet door of a general lifting cabinet can only move up and down, and there is no mechanism to receive the items and form a buffer when they fall. When the items slide out of the lifting cabinet, they can only fall to the ground. If they are fragile or valuable items, it is easy to cause loss and may also hurt the human body. Therefore, the lifting cabinet 730 is provided with a cabinet door tilting mechanism 800. During the rising and falling movement of the cabinet door 730, the upper edge of the cabinet door 730 will tilt outward. When the cabinet body rises back to the inside of the lifting cabinet 720, the cabinet door 730 slowly closes from the outward tilted state.

[0036] The cabinet door 730 slides up and down relative to the housing 710 through the cabinet door tilting mechanism 800 and the cabinet door sliding groove 712; the other end of the second steel wire 220 is connected to the cabinet door tilting mechanism 800;

[0037] When the first rotating member 100 and the second rotating member 200 rotate in the first rotating direction, at the initial stage of the descending of the lifting cabinet 720, the cabinet door tilting mechanism 800 first drives the upper edge of the cabinet door 730 to tilt outward relative to the lower edge, and then rises;

[0038] When the first rotating member 100 and the second rotating member 200 rotate in the second rotating direction, at the end of the lifting cabinet 720 rising, after the cabinet door 730 drops to the initial position, the cabinet door tilting mechanism 800 drives the upper edge of the cabinet door 730 to fit inwardly with the outer shell 710.

[0039] By controlling the tilt of the cabinet door 730 through the cabinet door tilting mechanism 800, the lifting cabinet body and the cabinet door 730 can move in coordination with each other in a reasonable manner, so as to better play the anti-pinch function of the lifting cabinet, provide a certain buffering and article receiving function, and avoid financial losses and injuries.

[0040] Based on the same considerations for home products, the setting of the cabinet door tilting mechanism 800 must also meet the characteristics of simple structure, small size, light weight, etc., and can be used in conjunction with the trigger switch assembly. Therefore, the cabinet door tilting mechanism 800 includes a lifting arm 810, a rotating arm 820 and a tilting arm 830, which respectively work with the trigger switch assembly to complete the control functions of coordinating the lifting and lowering movement of the cabinet door 730, rotating the tilting arm 830, and tilting the cabinet door 730 outward.

[0041] The lifting arm 810 cooperates with the cabinet door slide groove 712 to slide up and down relative to the housing 710, and a rotating slide groove 811 is opened on the upper part of the lifting arm 810;

[0042] A rotating slider 821 is provided at one end of the rotating arm 820, and the rotating slider 821 cooperates with the rotating slide groove 811 to slide therein, and the other end of the second steel wire 220 is connected to the rotating slider 821. The other end of the rotating arm 820 is hinged to the upper end of the tilting arm 830, and a tilting slider 822 is provided on the overlapping area of ​​the rotating arm 820 and the tilting arm 830;

[0043] The lower end of the tilting arm 830 is hinged to the lifting arm 810 , and a tilting groove 831 is provided on the overlapping area of ​​the tilting arm 830 and the rotating arm 820 for accommodating the tilting slider 822 to slide therein, and the cabinet door 730 is connected to the tilting arm 830 .

[0044] The lifting arm 810, the rotating arm 820 and the tilting arm 830 are not independent components. The three are interconnected to form a three-arm structure. The function of rotating and tilting the cabinet door 730 is completed by the sliding of the rotating slider and the tilting slider. The corresponding slide groove can control the sliding degree of the slider. The tilting and closing of the cabinet door 730 are completed by a very simple three-arm structure. The cabinet door tilting mechanism 800 can be made very light and almost does not occupy the position of the lifting cabinet, and the function is more stable. During the tilting opening and closing process of the cabinet door 730, the sliding speed of the slider is not particularly fast, which prevents the lifting cabinet from shaking due to the rapid opening and closing of the cabinet door 730. It has better buffering effect and anti-pinch function, and has good adaptability and reliability. It can adapt to different usage scenarios and complex environments, and can work stably and reliably under various conditions.

[0045] Technical effect of this technical solution: The trigger switch assembly proposed in this solution, through its unique design structure, realizes sensitive response to changes in specific conditions and can quickly and accurately trigger switch action when these conditions change. This design has significant beneficial effects in many fields, especially in occasions that require high-precision and high-sensitivity safety protection mechanisms:

[0046] 1. Pre-prevention and immediate response: The core of the trigger switch assembly is that when the second force decreases or disappears, the first rotating member and the second rotating member can be quickly driven from the first relative position to the second relative position through the automatic recovery force of the elastic member, thereby triggering the switch. This mechanism realizes a seamless connection from "event occurrence" to "protection measure activation", avoiding the time lag problem in traditional post-processing mechanisms, and truly achieving pre-prevention and immediate response.

[0047] 2. High precision and reliability: Since the first rotating member and the second rotating member are designed to have space for relative rotation, and the presence of the elastic member enables the two to undergo a certain displacement under certain conditions, thereby triggering the switch. This design ensures the accuracy and reliability of the triggering action and reduces the possibility of false triggering or missed triggering.

[0048] 3. Flexible adaptation to various scenarios: The structural design of the trigger switch assembly is flexible and can be adjusted according to the needs of actual application scenarios. For example, by changing the strength of the elastic member, the material or size of the first rotating member and the second rotating member, etc., it can adapt to different trigger sensitivities and load requirements. This makes the assembly have broad application prospects in many fields such as electric lifting cabinets, automation equipment, and security door control systems.

[0049] 4. Improved safety: In scenarios where anti-pinch protection is required, such as electric lift cabinets, the trigger switch assembly can be used as a key safety component. When the lift cabinet encounters an obstacle during the lifting process, causing the second force to decrease or disappear, such as clamping an object or a human body, the trigger switch will immediately operate to stop the movement of the lift cabinet, thereby effectively preventing the occurrence of pinching accidents. This mechanism fundamentally improves the safety of equipment such as electric lift cabinets.

[0050] 5. Simplify design and reduce costs: Compared with the traditional complex anti-pinch protection system, this technical solution achieves efficient and reliable anti-pinch protection function through simple mechanical structure and clever use of elastic parts. This not only simplifies the overall design of the system, but also reduces production costs and maintenance difficulties, which is conducive to the promotion and application of products. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] The drawings are for illustrative purposes only and should not be construed as limitations on the present invention. In order to better illustrate the present invention, some parts of the drawings may be omitted, enlarged, or reduced, and do not represent the size of actual products. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0052] Figure 1 Schematic diagram of the external structure of the trigger switch assembly.

[0053] Figure 2 Schematic diagram of the internal structure of the trigger switch assembly.

[0054] Figure 3 is a schematic structural diagram of the first rotating member.

[0055] Figure 4 Schematic diagram of the structure of the second rotating member.

[0056] Figure 5 It is a structural schematic diagram of the floating trigger mechanism.

[0057] Figure 6 It is a schematic diagram of the overall structure of the lifting cabinet.

[0058] Figure 7 It is a structural schematic diagram of the cabinet door tilting mechanism.

[0059] The symbols in the accompanying drawings include: first rotating member 100, first winding groove 110, first steel wire 120, limiting groove 130, floating cavity 140, pressing groove 150, second rotating member 200, second winding groove 210, extension section 211, bending section 212, second steel wire 220, winding column 230, top block 240, first relative position 310, second relative position 320, elastic member 400, switch 500, floating trigger Mechanism 600, floating ring 610, trigger arm 611, trigger foot 612, pressing arm 613, reset mechanism 620, shell 710, cabinet slide 711, cabinet door slide 712, lifting cabinet 720, lifting mechanism 740, cabinet door tilting mechanism 800, lifting arm 810, rotating slide 811, rotating arm 820, rotating slider 821, tilting slider 822, tilting arm 830, tilting slide 831, shell 900. DETAILED DESCRIPTION

[0060] In order to make the purpose, technical solution and advantages of the present invention more clear, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings:

[0061] Example 1: Reference Figures 1 to 4

[0062] The present invention provides a trigger switch assembly, comprising:

[0063] A first rotating member 100 and a second rotating member 200, wherein the first rotating member 100 and the second rotating member 200 rotate coaxially, and a relative rotation space is provided between the first rotating member 100 and the second rotating member 200, forming a first relative position 310 and a second relative position 320;

[0064] An elastic member 400, wherein the elastic member 400 is disposed between the first rotating member 100 and the second rotating member 200, so that the two have a movement tendency from the first relative position 310 to the second relative position 320;

[0065] The switch 500 is triggered when the first rotating member 100 and the second rotating member 200 rotate from the first relative position 310 to the second relative position 320;

[0066] like Figure 1 As shown, the housing 900 is used to encapsulate the first rotating member 100, the second rotating member 200, the elastic member 400 and the switch 500;

[0067] The first rotating member 100 and the second rotating member 200 have a first rotating direction and a second rotating direction, which are opposite to each other;

[0068] When the first rotating member 100 and the second rotating member 200 rotate in the first rotation direction, the two are in the first relative position 310, and the elastic member 400 is in a stretched state;

[0069] When the first rotating member 100 and the second rotating member 200 rotate in the second rotating direction, the two are in the first relative position 310, and the first rotating member 100 is subjected to the first force and the second rotating member 200 is subjected to the second force to maintain the elastic member 400 in a stretched state;

[0070] When the second force decreases or disappears, the elastic member 400 pulls the first rotating member 100 and the second rotating member 200 to move from the first relative position 310 to the second relative position 320 until the switch 500 is triggered.

[0071] like Figure 2 As shown, when the second force decreases or disappears, it means that the human body or object partially or completely offsets the second force, that is, the human body or the object may be clamped or about to be clamped, and the elastic member 400 of the trigger switch assembly will promptly pull the first rotating member 100 and the second rotating member 200 from the first relative position 310 to the second relative position 320, and when they move to the preset position of the trigger switch assembly, the switch will be triggered.

[0072] The reduction or disappearance of the force is used to determine whether a person or object is about to be clamped. Due to the reduction or disappearance of the second force, the clamping force decreases rapidly, so the person or object will not be injured or damaged. It has high sensitivity, fast response and intelligent prediction capabilities. It can sense in time when the cabinet comes into contact with an obstacle, and at this time it can quickly reduce the clamping force, effectively avoiding the situation of pinching people or damaging objects.

[0073] Since the first rotating member 100 and the second rotating member 200 often rotate during operation and their structures are uneven, friction will occur between other components during actual use. Long-term use will cause damage to the components and affect the normal operation of the components. Therefore, the first rotating member 100, the second rotating member 200, the elastic member 400 and the switch 500 are encapsulated in the shell 900 as an external protective layer of the component to isolate them from the external environment to prevent the external environment from affecting the normal operation of the component. The shell 900 can also support the rotating member to facilitate the rotation of the rotating member and improve the overall stability of the component. In addition, the external structure of the trigger switch component is simplified by the encapsulation of the shell 900.

[0074] The trigger switch assembly requires two rotating parts to rotate in coordination with each other and be maintained in a balanced relative position by the elastic part 400. If the two rotating parts are separately arranged, the coordination and control of their rotation will become complicated, and the structure will become correspondingly complicated and messy, and it will also lead to an increase in the volume and weight of the lifting cabinet, which is not suitable for home use. Therefore, the first rotating part 100 and the second rotating part 200 are arranged as winding disk structures that fit each other, and a first winding groove 110 and a second winding groove 210 are arranged. The first winding groove 110 and the second winding groove 210 are respectively wound with a first steel wire 120 and a second steel wire 220, and the winding directions are opposite. The pulling force applied by the first steel wire 120 to the first rotating part 100 is the first force, and the pulling force applied by the second steel wire 220 to the second rotating part 200 is the second force.

[0075] like Figure 3 As shown, since the functions and principles of the first rotating member 100 and the second rotating member 200 are different, the first rotating member 100 needs to support the lifting and lowering movement of the entire cabinet body, while the second rotating member 200 is responsible for the short-distance lifting and lowering movement of the cabinet door. The lifting and lowering movements of the two have an obvious stroke difference. The first rotating member 100 requires a longer steel wire length and a larger winding groove diameter than the second rotating member 200. Therefore, the first winding groove 110 is spirally arranged on the side of the first rotating member 100.

[0076] like Figure 4 As shown, a protruding winding post 230 is provided on one side of the second rotating member 200 away from the first rotating member 100. The winding post 230 has a smaller diameter than the first rotating member 100 and the second rotating member 200, and is coaxially arranged with the first rotating member 100 and the second rotating member 200;

[0077] The anti-pinch setting of the trigger switch assembly is achieved by offsetting part or all of the second force, and the second force is applied to the second rotating member 200 through the second steel wire 220. During normal operation, the second steel wire 220 is in a tensioned state. When the second force is offset, the cabinet door quickly slows down and stops, and a certain degree of bending occurs at the end of the winding groove of the second steel wire 220. Therefore, a release space for pulling needs to be provided at the end of the second winding groove 210. The second winding groove 210 is spirally arranged on the side of the winding column 230 and extends from the bottom of the winding column 230 to the one side of the second rotating member 200. The extension section 211 of the second winding groove 210 on the one side of the second rotating member 200 is hook-shaped, and its end forms an inward bending section 212. The hook-shaped extension section 211 of the winding groove can provide a release space for the second steel wire 220 to form a buffer.

[0078] When the first rotating member 100 and the second rotating member 200 rotate, they do not rotate freely, but the degree of rotation of the rotating member needs to be determined according to the movement of the cabinet body and the cabinet door of the lifting cabinet. Therefore, a penetrating limit groove 130 is provided on the first rotating member 100, and a limit column 230 is provided on the other side of the second rotating member 200 that is attached to the first rotating member 100. The limit column 230 passes through the limit groove 130 and can slide in the limit groove 130, which has a limiting effect on the first rotating member 100 and the second rotating member 200.

[0079] The rotation directions of the first rotating member 100 and the second rotating member 200 are opposite. When the two rotating members rotate, the force they receive will maintain the elastic member in a stretched state. At this time, the first rotating member and the second rotating member are in a balanced first relative position. When the force received by the second rotating member decreases or disappears, the rotating member needs to pull the two rotating members to move to the second relative position until the switch is triggered. Therefore, the limit groove 130 is set to an arc structure, and the restrictions on the limit column 230 at both ends form the first relative position 310 and the second relative position 320, which constitute the action part of the elastic member 400, thereby ensuring the directional rotation of the first rotating member 100 and the second rotating member 200.

[0080] Example 2: Reference Figure 5

[0081] Compared with the first embodiment, the difference is that the floating trigger mechanism 600 includes a floating ring 610 and a reset mechanism 620. The floating ring 610 is provided with a trigger arm 611 on the side facing the switch 500, and a trigger foot 612 on the other side facing the first rotating member 100. The trigger foot 612 penetrates the first rotating member 100 to the other side of the first rotating member 100. The second rotating member 200 is also provided with a top block 240 on the other side of the first rotating member 100. When the first rotating member 100 and the second When the rotating member 200 is in the second relative position 320, the top block 240 slides to the bottom of the trigger pin 612, lifts the floating ring 610 away from the side of the first rotating member 100, and causes the trigger arm 611 to trigger the switch 500; and when the first rotating member 100 and the second rotating member 200 are in the first relative position 310, the top block 240 is separated from the trigger pin 612, and the reset mechanism 620 presses the floating ring 610 against the side of the first rotating member 100, thereby releasing the trigger arm 611 from triggering the switch 500.

[0082] In order to prevent people and objects from being pinched or damaged during the movement of the lifting cabinet, the anti-pinch function of the lifting cabinet needs to be very stable and timely to ensure its safety. The floating trigger is when the rotating part is in the second relative position 320, the top block 240 slides to the bottom of the trigger foot 612, the top block 240 lifts the trigger foot 612 of the floating ring 610, the floating ring 610 floats upward as a whole, and the trigger arm 611 covers the photosensitive element of the floating trigger mechanism 600, thereby completing the triggering of the switch. When the rotating part is in the first relative position 310, the top block is separated from the trigger foot 612, the floating ring 610 floats downward as a whole, and the floating ring 610 is pressed to the side of the first rotating part 100 by the reset mechanism, and the photosensitive element is exposed again, that is, the switch is released. The floating trigger ensures that the anti-pinch function is in a stable state, thereby improving the safety of the lifting cabinet.

[0083] The movement of the floating ring 610 needs to be restricted to a certain extent, otherwise the floating ring 610 may be skewed or fall when moving up and down. Therefore, a floating cavity 140 for accommodating the floating ring 610 is formed on one side of the first rotating member 100, which can limit the floating ring 610 to move only in the floating cavity 140, thereby ensuring the normal operation of the switch trigger. When the floating ring 610 moves downward, that is, when the switch is released, the floating ring 610 cannot automatically and quickly reset to the bottom of the floating cavity 140, and the trigger arm 611 will partially cover the photosensitive element, resulting in a malfunction of the switch release function. Therefore, a pressing groove 150 is formed on the outside of the floating cavity 140, and when resetting, the floating ring 610 is quickly and completely reset to the bottom of the floating cavity 140, thereby quickly releasing the switch trigger.

[0084] When the top block 240 lifts the trigger pin of the floating ring 610, the entire floating ring 610 needs to be lifted steadily and at a uniform height, and the floating ring 610 has a large diameter. Setting a single or uneven trigger pin 612 on the floating ring 610 will cause the floating ring to be in an unbalanced floating state. Therefore, the floating ring 610 is provided with a plurality of trigger pins 612, and the plurality of trigger pins 612 are evenly distributed on the floating ring 610. The downward movement of the floating ring 610 also needs to ensure that the entire floating ring 610 is in a stable descending state. Therefore, the floating ring 610 is provided with a plurality of outwardly extending pressing arms 613 at positions corresponding to the plurality of trigger pins 612, and the pressing arms 613 extend from the floating cavity 140 to the pressing groove 150; the reset mechanism 620 includes a plurality of compression springs corresponding to the pressing arms 613, which are distributed at the ends of the pressing arms 613 in the pressing groove 150, so that the up and down movement of the floating ring 610 is in a normal and stable state, and the stability of the triggering of the switch 500 is ensured.

[0085] Example 3: Reference Figure 6

[0086] Compared with the above embodiment, the difference is that the present invention also provides a lifting cabinet, such as Figure 6 As shown, it includes a shell 710, a lifting cabinet 720, a cabinet door 730 and a lifting mechanism 740. The front of the shell 710 is open, and cabinet slide grooves 711 and cabinet door slide grooves 712 are arranged on both sides to support the lifting of the lifting cabinet 720 and the cabinet door 730 respectively. The lifting mechanism 740 is used to drive the lifting cabinet 720 and the cabinet door 730 to rise and fall relative to the shell 710, and also includes the trigger switch assembly as described in any one of embodiments 1-4;

[0087] One end of the first steel wire 120 is connected to the lifting mechanism 740, and the other end is connected to the lifting cabinet 720;

[0088] One end of the second steel wire 220 is fixed to the second rotating member 200, and the other end is connected to the cabinet door 730;

[0089] When the first rotating member 100 and the second rotating member 200 rotate in the first rotating direction, the lifting cabinet 720 descends and the cabinet door 730 ascends;

[0090] When the first rotating member 100 and the second rotating member 200 rotate in the second rotation direction, the lifting cabinet 720 rises and the cabinet door 730 falls. The first force is the pulling force of the lifting mechanism 740 pulling the first steel wire 120, and the second force is the pulling force of the gravity of the cabinet door 730 pulling the second steel wire 220.

[0091] When the first rotating member 100 and the second rotating member 200 rotate in the first rotation direction, the lifting cabinet 720 descends and the cabinet door 730 rises; when the first rotating member 100 and the second rotating member 200 rotate in the second rotation direction, the lifting cabinet 720 rises and the cabinet door 730 descends. The first force is the pulling force of the lifting mechanism 740 pulling the first steel wire 120, and the second force is the pulling force of the gravity of the cabinet door 730 pulling the second steel wire 220. Both rotating members are in a balanced force state and will not trigger the switch assembly.

[0092] When the lifting cabinet 720 is about to or has clamped a person or an object during movement, the second force acting on the cabinet door 730 is increased by the force brought by the person or the object in addition to its own gravity. The cabinet door 730 is connected to one end of the second steel wire 220, and the other end of the second steel wire 220 is connected to the second rotating member 200. At this time, the force acting on the second rotating member 200 is reduced or disappears, and the stretched state of the elastic member 400 is broken, driving the two rotating members to move to the second relative position 320, and the floating ring 610 will be lifted up by the top block 240, and the switch will be triggered by the trigger arm 611, thereby starting the anti-pinch function.

[0093] The items in the lifting cabinet 720 may accidentally slide down due to the startup of the lifting cabinet 720, the unreasonable placement of the items, etc., and the cabinet body and cabinet door of a general lifting cabinet can only move up and down, and there is no mechanism to receive the items and form a buffer when they fall. When the items slide out of the lifting cabinet, they can only fall to the ground. If they are fragile or valuable items, it is easy to cause loss and may also hurt the human body. Therefore, the lifting cabinet 730 is provided with a cabinet door tilting mechanism 800. During the rising and falling movement of the cabinet door 730, the upper edge of the cabinet door 730 will tilt outward. When the cabinet body rises back to the inside of the lifting cabinet 720, the cabinet door 730 slowly closes from the outward tilted state.

[0094] Example 4: Reference Figure 7

[0095] Compared with the embodiment 3, the difference is that the cabinet door tilting mechanism 800 comprises a lifting arm 810, a rotating arm 820 and a tilting arm 830;

[0096] The lifting arm 810 cooperates with the cabinet door slide groove 712 to slide up and down relative to the housing 710, and a rotating slide groove 811 is opened on the upper part of the lifting arm 810;

[0097] A rotating slider 821 is provided at one end of the rotating arm 820, and the rotating slider 821 cooperates with the rotating slide groove 811 to slide therein, and the other end of the second steel wire 220 is connected to the rotating slider 821. The other end of the rotating arm 820 is hinged to the upper end of the tilting arm 830, and a tilting slider 822 is provided on the overlapping area of ​​the rotating arm 820 and the tilting arm 830;

[0098] The lower end of the tilting arm 830 is hinged to the lifting arm 810 , and a tilting groove 831 is provided on the overlapping area of ​​the tilting arm 830 and the rotating arm 820 for accommodating the tilting slider 822 to slide therein, and the cabinet door 730 is connected to the tilting arm 830 .

[0099] Based on the same considerations of household products, the setting of the cabinet door tilting mechanism 800 must also meet the characteristics of simple structure, small size, light weight, etc., and can be used in conjunction with the trigger switch assembly. The lifting arm 810, the rotating arm 820 and the tilting arm 830 are not independent components. The three are connected to each other to form a three-arm structure. The function of rotating and tilting the cabinet door 730 is completed by the sliding of the rotating slider and the tilting slider. The corresponding slide groove can control the sliding degree of the slider. The tilting and closing of the cabinet door 730 is completed by a very simple three-arm structure. The cabinet door tilting mechanism 800 can be made very light and almost does not occupy the position of the lifting cabinet, and the function is more stable. During the tilting opening and closing process of the cabinet door 730, the sliding speed of the slider is not particularly fast, which prevents the lifting cabinet from shaking due to the rapid opening and closing of the cabinet door 730. It has better buffering effect and anti-pinch function, and has good adaptability and reliability. It can adapt to different usage scenarios and complex environments, and can work stably and reliably under various conditions.

Claims

1. A trigger switch assembly, comprising: A first rotating member (100) and a second rotating member (200), wherein the first rotating member (100) and the second rotating member (200) rotate coaxially, and a relative rotation space is provided between the first rotating member (100) and the second rotating member (200), forming a first relative position (310) and a second relative position (320); An elastic member (400), wherein the elastic member (400) is disposed between the first rotating member (100) and the second rotating member (200), so that the two members have a tendency to move from a first relative position (310) to a second relative position (320); A switch (500) is triggered when the first rotating member (100) and the second rotating member (200) rotate from a first relative position (310) to a second relative position (320); A housing (900) for encapsulating the first rotating member (100), the second rotating member (200), the elastic member (400) and the switch (500); Features: The first rotating member (100) and the second rotating member (200) have a first rotating direction and a second rotating direction, which are opposite to each other; When the first rotating member (100) and the second rotating member (200) rotate in a first rotation direction, the two are in a first relative position (310), and the elastic member (400) is in a stretched state; When the first rotating member (100) and the second rotating member (200) rotate in a second rotating direction, the two are in a first relative position (310), the first rotating member (100) is subjected to a first force and the second rotating member 200 is subjected to a second force to maintain the elastic member (400) in a stretched state; When the second force decreases or disappears, the elastic member (400) pulls the first rotating member (100) and the second rotating member (200) to move from the first relative position (310) to the second relative position (320) until the switch (500) is triggered.

2. The trigger switch assembly according to claim 1, characterized in that: The first rotating member (100) and the second rotating member (200) are winding disc structures that fit together; The first rotating member (100) is provided with a first winding groove (110), and a first steel wire (120) is wound around the first winding groove (110); The second rotating member (200) is provided with a second winding groove (210), and a second steel wire (220) is wound around the second winding groove (210); The winding directions of the first winding groove (110) and the second winding groove (210) are opposite; The tension applied by the first steel wire (120) to the first rotating member (100) is the first acting force; The tension applied by the second steel wire (220) to the second rotating member (200) is the second acting force.

3. The trigger switch assembly according to claim 2, characterized in that: The first winding groove (110) is spirally arranged on a side surface of the first rotating member (100); A protruding winding post (230) is provided on a side of the second rotating member (200) away from the first rotating member (100); the winding post (230) has a smaller diameter than the first rotating member (100) and the second rotating member (200), and is coaxially arranged with the first rotating member (100) and the second rotating member (200); The second winding groove (210) is spirally arranged on the side of the winding pole (230) and extends from the bottom of the winding pole (230) to the one side of the second rotating member (200). The extension section (211) of the second winding groove (210) on the one side of the second rotating member (200) is hook-shaped, and its end forms an inward bending section (212).

4. The trigger switch assembly according to claim 1, characterized in that: The first rotating member (100) and the second rotating member (200) are winding disc structures that fit together; The first rotating member (100) is provided with a through-going limiting groove (130), and the second rotating member (200) is provided with a limiting column (230) on the other side of the second rotating member (200) that is in contact with the first rotating member (100), and the limiting column (230) passes through the limiting groove (130) and can slide in the limiting groove (130); The limiting groove (130) is an arc-shaped structure, and the limiting groove (130) at its two ends limits the limiting column (230) to form the first relative position (310) and the second relative position (320).

5. The trigger switch assembly according to any one of claims 2 to 4, characterized in that: The invention also includes a floating trigger mechanism (600), wherein the switch (500) is arranged on a side of the first rotating member (100) away from the second rotating member (200), and the floating trigger mechanism (600) is arranged between the switch (500) and the first rotating member (100). When the first rotating member (100) and the second rotating member (200) rotate from a first relative position (310) to a second relative position (320), the floating trigger mechanism (600) is pushed to trigger the switch (500).

6. The trigger switch assembly according to claim 5, characterized in that: The floating trigger mechanism (600) comprises a floating ring (610) and a reset mechanism (620); the floating ring (610) is provided with a trigger arm (611) on one side facing the switch (500), and is provided with a trigger foot (612) on the other side facing the first rotating member (100); the trigger foot (612) penetrates the first rotating member (100) to the other side of the first rotating member (100); A top block (240) is also provided on the other side of the second rotating member (200) that is in contact with the first rotating member (100); When the first rotating member (100) and the second rotating member (200) are in the second relative position (320), the top block (240) slides to below the trigger foot (612), lifts the floating ring (610) away from the first rotating member (100), and causes the trigger arm (611) to trigger the switch (500); When the first rotating member (100) and the second rotating member (200) are in the first relative position (310), the top block (240) is separated from the trigger foot (612), and the reset mechanism (620) presses the floating ring (610) against one side of the first rotating member (100), thereby releasing the trigger arm (611) from triggering the switch (500).

7. The trigger switch assembly according to claim 6, characterized in that: A floating cavity (140) for accommodating the floating ring (610) is formed on one side of the first rotating member (100), and a pressing groove (150) is formed on the outside of the floating cavity (140); The floating ring (610) is provided with a plurality of trigger pins (612), and the plurality of trigger pins (612) are evenly distributed on the floating ring (610). The floating ring (610) is provided with a plurality of outwardly extending pressing arms (613) at positions corresponding to the plurality of trigger pins (612), and the pressing arms (613) extend from the floating cavity (140) to the pressing groove (150); The reset mechanism (620) includes a plurality of compression springs corresponding to the pressing arms (613), which are distributed in the pressing groove (150) to press the ends of the pressing arms (613).

8. A lifting cabinet, comprising a shell (710), a lifting cabinet (720), a cabinet door (730) and a lifting mechanism (740), wherein the shell (710) is open at the front, and cabinet slide grooves (711) and cabinet door slide grooves (712) are arranged on both sides to respectively support the lifting of the lifting cabinet (720) and the cabinet door (730), and the lifting mechanism (740) is used to drive the lifting cabinet (720) and the cabinet door (730) to rise and fall relative to the shell (710), characterized in that: Also includes a trigger switch assembly as described in any one of claims 2-7; One end of the first steel wire (120) is connected to the lifting mechanism (740), and the other end is connected to the lifting cabinet (720); One end of the second steel wire (220) is fixed to the second rotating member (200), and the other end is connected to the cabinet door (730); When the first rotating member (100) and the second rotating member (200) rotate in a first rotation direction, the lifting cabinet (720) descends and the cabinet door (730) ascends; When the first rotating member (100) and the second rotating member (200) rotate in the second rotation direction, the lifting cabinet (720) rises and the cabinet door 730 falls, the first force is the pulling force of the lifting mechanism (740) pulling the first steel wire (120), and the second force is the pulling force of the gravity of the cabinet door (730) pulling the second steel wire (220).

9. The lifting cabinet according to claim 8, characterized in that: It also includes a cabinet door tilting mechanism (800), and the cabinet door (730) slides up and down relative to the housing (710) through the cabinet door tilting mechanism (800) and the cabinet door sliding groove (712); The other end of the second steel wire (220) is connected to the cabinet door tilting mechanism (800); When the first rotating member (100) and the second rotating member (200) rotate in the first rotating direction, at the initial stage of the descending of the lifting cabinet (720), the cabinet door tilting mechanism (800) first drives the upper edge of the cabinet door (730) to tilt outward relative to the lower edge, and then ascends; When the first rotating member (100) and the second rotating member (200) rotate in the second rotating direction, at the end of the ascent of the lifting cabinet (720), after the cabinet door (730) descends to the initial position, the cabinet door tilting mechanism (800) drives the upper edge of the cabinet door (730) to fit inwardly with the outer shell (710).

10. The lifting cabinet according to claim 9, characterized in that: The cabinet door tilting mechanism (800) comprises a lifting arm (810), a rotating arm (820) and a tilting arm (830); The lifting arm (810) cooperates with the cabinet door slide groove (712) to slide up and down relative to the housing (710), and a rotating slide groove (811) is provided on the upper part of the lifting arm (810); A rotating slider (821) is provided at one end of the rotating arm (820), and the rotating slider (821) cooperates with the rotating slide groove (811) to slide therein, and the other end of the second steel wire (220) is connected to the rotating slider (821), and the other end of the rotating arm (820) is hinged to the upper end of the tilting arm (830), and a tilting slider (822) is provided on the overlapping area of ​​the rotating arm (820) and the tilting arm (830); The lower end of the tilting arm (830) is hinged to the lifting arm (810); an inclined slide groove (831) is provided on the overlapping area of ​​the tilting arm (830) and the rotating arm (820) for accommodating the tilting slider (822) to slide therein; and the cabinet door (730) is connected to the tilting arm (830).

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