Electric wall cupboard

Abstract

The utility model discloses an electric wall cupboard, which comprises a storage cabinet doing lifting motion and a safety protection module arranged on the storage cabinet, the safety protection module comprises a trigger component, the trigger component is connected to the storage cabinet, and an interlayer space allowing the trigger component to float is formed between the trigger component and the storage cabinet; the triggering part is extruded by an obstacle in the movement process of the storage cabinet to trigger reverse movement; and the sensing part comprises a strain electric signal conversion element which is constructed to be of a sheet-shaped structure, and the strain electric signal conversion element is arranged in the interlayer space and is triggered to act by the reverse movement of the triggering part. The lifting cabinet has the advantage of solving the problems caused by the fact that a micro switch is adopted by an existing lifting cabinet. The strain electric signal conversion element is of a sheet-shaped structure and is arranged in the interlayer space, and does not need to occupy a larger accommodating cavity like a microswitch, so that the occupation of the internal space of the wall cupboard is reduced, the compact design of the wall cupboard is favorably realized, and the requirement of modern home furnishing on efficient utilization of the space is met.

Description

Technical Field

[0001] This utility model relates to the field of lifting cabinet technology, specifically to electric lifting cabinets. Background Technology

[0002] In modern home environments, lift-up kitchen cabinets are widely used due to their efficient space utilization and convenient operation. However, the anti-collision and anti-pinch functions of existing lift-up kitchen cabinets still have the following significant technical defects: For example, the Chinese patent CN210076993U entitled "Lift-up Cabinet and Safety Base Plate" includes: a support plate assembly, which is located at the bottom of the lift-up cabinet. The support plate assembly includes an upper plate and a bottom plate adapted to be assembled to form a receiving cavity; the upper plate and the bottom plate are connected by a plurality of elastic connecting column assemblies; a first micro switch assembly, which is located in the receiving cavity; the first micro switch assembly includes a first travel plate adapted to be inserted into the end face of the upper plate facing the bottom plate, and at least one first micro switch located on the end face of the first travel plate facing the bottom plate.

[0003] Its use of a microswitch as a signal triggering device has the following disadvantages:

[0004] 1. Large space occupation: The micro switch needs to be installed in the cavity, which increases the thickness of the base plate, which contradicts the need for compact design in modern homes;

[0005] 2. Insufficient sensitivity: Mechanical triggering relies on physical contact and is slow to respond to minute clamping forces;

[0006] 3. Poor durability: Long-term use can lead to spring fatigue and wear of the contact spring, resulting in false triggering or functional failure.

[0007] 4. Noise issue: Mechanical collision sound (such as the sound of a spring changing shape) is generated when triggered, which affects the user experience. Utility Model Content

[0008] The purpose of this invention is to provide an electric overhead cabinet that can effectively solve the problems existing in the use of micro switches in existing lifting cabinets.

[0009] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0010] An electric hanging cabinet includes a storage cabinet that moves up and down and a safety protection module installed on the storage cabinet. The safety protection module includes:

[0011] A triggering component is connected to the locker and forms a mezzanine space between the locker and the locker, allowing the triggering component to float. The triggering component is triggered to move in the opposite direction when it is squeezed by an obstacle during the movement of the locker.

[0012] The sensing component includes a strain electrical signal conversion element configured as a thin sheet, the strain electrical signal conversion element being disposed in the interlayer space and triggered by the reverse movement of the triggering component.

[0013] In the aforementioned electric hanging cabinet, an elastic buffer layer is spaced between the triggering component and the strain electrical signal conversion element and / or between the storage cabinet and the strain electrical signal conversion element.

[0014] In the aforementioned electric cabinet, the elastic buffer layer is attached to the strain electrical signal conversion element.

[0015] In the aforementioned electric overhead cabinet, the safety protection module further includes an elastic sleeve, which at least partially encloses and protects the strain electrical signal conversion element, forming an elastic buffer layer on both sides of the strain electrical signal conversion element in the thickness direction.

[0016] In the aforementioned electric hanging cabinet, the safety protection module is used for anti-collision during the descent of the cabinet. The cabinet includes a storage space and a base plate located at the bottom of the storage space. The triggering component is floatingly connected to the base plate below it to form the interlayer space. The triggering component floats upward when it is squeezed by an obstacle during the descent of the cabinet.

[0017] In the aforementioned electric hanging cabinet, floating connecting members are provided on opposite sides of the lower surface of the base plate. The floating connecting members on both sides have supporting cantilever arms extending towards each other. The triggering component, which is configured as a plate structure, is freely placed on the supporting cantilever arms on both sides to achieve a floating connection with the base plate.

[0018] In the aforementioned electric cabinet, the triggering component has outwardly extending ribs on opposite sides, the ribs resting freely on the supporting cantilever, and part of the triggering component protruding downward from the lower surface of the supporting cantilever.

[0019] In the aforementioned electric cabinet, the strain gauge electrical signal conversion element is mounted on the base plate, and a mis-touch compensation gap is reserved between the triggering component and the strain gauge electrical signal conversion element; or, the strain gauge electrical signal conversion element is mounted on the triggering component, and a mis-touch compensation gap is reserved between the base plate and the strain gauge electrical signal conversion element.

[0020] In the aforementioned electric cabinet, the sensing component includes at least two strain electrical signal conversion elements, which are distributed on opposite sides of the interlayer space.

[0021] In the aforementioned electric cabinet, the signal lines of the at least two strain gauge electrical signal conversion elements are connected to the same signal processing unit for signal preprocessing, and the signal processing unit is built into the interlayer space.

[0022] In the aforementioned electric hanging cabinet, the safety protection module is used to prevent the cabinet from being pinched during its ascent. The cabinet includes a storage space and a base plate located at the bottom of the storage space. At least one side of the cabinet has an item retrieval opening. The triggering component is freely inserted into the base plate below the item retrieval opening to form a side baffle. During the ascent of the cabinet, the triggering component is pressed down by an obstacle and depresses the strain electrical signal conversion element in the interlayer space.

[0023] In the aforementioned electric hanging cabinet, the bottom plate below the item loading and unloading opening has an upwardly extending enclosure. The enclosure has an upwardly opening groove along its length. A trigger component, which is a strip-shaped structure, is partially inserted into the groove. A vertical gap is reserved between the upper surface of the enclosure and the exposed part of the trigger component.

[0024] In the aforementioned electric cabinet, the strain gauge electrical signal conversion element is a piezoelectric element or a strain gauge.

[0025] In the aforementioned electric hanging cabinet, the electric hanging cabinet also includes an outer cabinet body with a bottom opening and a lifting drive mechanism installed on the outer cabinet body. The lifting drive mechanism drives the storage cabinet to move up and down from the bottom opening of the outer cabinet body.

[0026] Compared with the prior art, the advantages of this utility model are:

[0027] By incorporating a thin-film strain gauge electrical signal conversion element within the interlayer space between the storage cabinet and the triggering component, the problems associated with current microswitches used in lift cabinets are resolved. Compared to the signal triggering devices such as microswitches used in traditional lift cabinets, the strain gauge electrical signal conversion element in this safety protection module is a thin-film structure and is located within the interlayer space. Unlike microswitches, it does not require a large receiving cavity, thus reducing the space occupied within the cabinet and facilitating a compact design that meets the space-efficient utilization needs of modern homes.

[0028] Employing a strain gauge electrical signal conversion element, it is highly sensitive to minute forces. As soon as the triggering component reverses its movement, the strain gauge electrical signal conversion element is quickly activated, transmitting a signal promptly. Compared to mechanical triggering methods that rely on physical contact, this method can detect obstacles more accurately, improving the timeliness and accuracy of safety protection. During the upward movement of the overhead cabinet, when the triggering component is subjected to even the slightest pressure, the strain gauge electrical signal conversion element can respond quickly, stopping the cabinet's ascent and effectively preventing pinching accidents.

[0029] Unlike traditional microswitches, which are prone to spring fatigue and contact wear leading to false triggering or malfunction, this safety protection module has a relatively simple structure, and the strain gauge electrical signal conversion element is not easily damaged under normal use, resulting in better durability. This reduces the frequency of maintenance and component replacement, thus lowering operating costs.

[0030] During the process of triggering the sensing component, the action is mainly achieved through the change of electrical signal of the strain electrical signal conversion element, which avoids the noise generated by mechanical collision, creates a quieter operating environment for users, and improves the user experience.

[0031] Furthermore, an elastic buffer layer is provided between the triggering component and the strain gauge signal conversion element, and / or between the storage cabinet and the strain gauge signal conversion element. The elastic buffer layer effectively reduces the impact force generated by the triggering component or storage cabinet on the strain gauge signal conversion element during movement. When the triggering component is squeezed in the opposite direction by an obstacle, it may rapidly impact the strain gauge signal conversion element. The elastic buffer layer acts as a buffer, preventing damage to the element due to excessive instantaneous impact force, extending its service life, and ensuring the stable operation of the safety protection module. The elastic buffer layer can evenly distribute the impact force transmitted by the triggering component or storage cabinet to the entire contact surface of the strain gauge signal conversion element, avoiding damage to the element due to excessive force at a single point or in a localized area.

[0032] Furthermore, the elastic buffer layer is attached to the strain gauge electrical signal conversion element. This attached design ensures that the relative position between the elastic buffer layer and the strain gauge electrical signal conversion element is fixed, preventing displacement of the elastic buffer layer due to vibration, shaking, or relative movement between components of the cabinet. This ensures a consistently stable and reliable buffering effect, allowing the safety protection module to maintain accurate sensing and response to obstacles, thus improving the safety of the cabinet's use.

[0033] Furthermore, the safety protection module also includes an elastic sleeve, which at least partially encloses and protects the strain gauge electrical signal conversion element, forming elastic buffer layers on both sides of the strain gauge electrical signal conversion element's thickness direction. Enclosing at least part of the strain gauge electrical signal conversion element with the elastic sleeve prevents dust, moisture, and other impurities from entering, avoiding performance degradation or damage due to moisture or dust accumulation, extending the element's lifespan, and ensuring the long-term stable operation of the safety protection module. In environments such as kitchens, where there is a high concentration of moisture and oil, the elastic sleeve effectively blocks these substances from contacting the strain gauge electrical signal conversion element, ensuring its normal operation. The elastic buffer layers formed on both sides of the elastic sleeve in the thickness direction of the strain gauge electrical signal conversion element further enhance the buffering effect. When the triggering component is compressed by an obstacle and triggers reverse movement, the elastic buffer layers on both sides can disperse the impact force from multiple directions, more effectively protecting the strain gauge electrical signal conversion element, reducing the risk of component damage due to impact, and also making the triggering action smoother, improving the sensitivity and reliability of the safety protection module.

[0034] Furthermore, the safety protection module is used for collision prevention during the descent of the locker. The locker includes a storage space and a base plate at the bottom of the storage space. The triggering component is floatingly connected to the base plate below it, forming the interlayer space. During the descent of the locker, the triggering component floats upwards when pressed by an obstacle. By setting a triggering component floatingly connected to the base plate below it, an interlayer space is formed. When the locker encounters an obstacle during descent, the triggering component suspended below the base plate can react quickly. Due to its suspended structure, each part can independently sense the obstacle. Once a single point of force is applied, it can flexibly float upwards, promptly triggering the sensing component, allowing the locker to stop descending quickly and effectively avoiding collisions. Compared with structures with guide columns, it avoids trigger delays or failures due to deflection caused by single-point force, greatly improving the timeliness and reliability of collision prevention, and better protecting the items inside the locker and the surrounding environment. The suspended triggering component has a simple structure, making installation and disassembly more convenient. During production, this design reduces assembly difficulty and improves production efficiency. In later maintenance, it allows repair personnel to more easily inspect, repair, and replace trigger components, reducing maintenance time and costs. In contrast, structures with guide pillars have a more complex installation and maintenance process, requiring more manpower and time.

[0035] Furthermore, the lower surface of the base plate is provided with floating connecting members on opposite sides. These floating connecting members have supporting cantilever arms extending towards each other. A trigger component, configured as a plate-like structure, rests freely on these supporting cantilever arms to achieve a floating connection with the base plate. The floating connecting members with extending supporting cantilever arms on both sides provide a stable support platform for the plate-like trigger component. The trigger component, freely resting on the cantilever arms, maintains stable suspension under normal conditions, preventing swaying or deviation. During frequent lifting and lowering of the cabinet, it maintains its relative position to the base plate, ensuring stable operation of the safety protection module and reliable obstacle detection and response. When pressed by an obstacle, the trigger component can float upwards sensitively. The supporting cantilever arms provide the trigger component with a certain degree of freedom of movement, and the trigger component can quickly transmit signals when subjected to pressure. When encountering an obstacle, the trigger component can respond quickly, promptly triggering the strain electrical signal conversion element, causing the cabinet to stop descending in time, effectively avoiding collisions and protecting the cabinet and surrounding items.

[0036] Furthermore, the triggering component has outwardly extending ribs on opposite sides, which rest freely on the supporting cantilever. A portion of the triggering component protrudes downwards from the lower surface of the supporting cantilever. These outwardly extending ribs, resting freely on the supporting cantilever, make the triggering component more stable in its suspended state, reducing its horizontal displacement and sway. Even when the cabinet is frequently raised and lowered or affected by external vibrations, it can maintain an accurate position, ensuring the reliable operation of the safety protection module and avoiding false or missed triggers due to instability of the triggering component. The downward protrusion of the triggering component from the lower surface of the supporting cantilever makes it easier to contact obstacles. During the cabinet's descent, if an obstacle appears, the protruding part can sense it more quickly and be compressed, causing the triggering component to float upwards more rapidly, triggering the sensing component. This design optimizes the timeliness and accuracy of the trigger response, more effectively preventing collisions between the cabinet and obstacles, and protecting the cabinet and surrounding items.

[0037] Furthermore, the strain gauge electrical signal conversion element is mounted on the base plate, and a mis-trigger compensation gap is reserved between the triggering component and the strain gauge electrical signal conversion element; alternatively, the strain gauge electrical signal conversion element is mounted on the triggering component, and a mis-trigger compensation gap is reserved between the base plate and the strain gauge electrical signal conversion element. The reserved mis-trigger compensation gap effectively reduces the probability of false triggering due to unexpected factors. In daily use of electric hanging cabinets, vibrations and minor displacements are unavoidable. Without this gap, slight movements of the triggering component or the base plate may accidentally trigger the strain gauge electrical signal conversion element, causing the hanging cabinet to unnecessarily stop lifting or lowering. The gap provides a buffer space; the strain gauge electrical signal conversion element will only be triggered when the triggering component is subjected to sufficient pressure from an obstacle, ensuring the accuracy of the safety protection module's operation and avoiding interference with normal user operation.

[0038] Furthermore, the sensing component includes at least two strain gauge electrical signal conversion elements, which are distributed on opposite sides of the interlayer space. In actual use, the triggering component is subjected to various complex situations when squeezed by obstacles. With multiple strain gauge electrical signal conversion elements distributed on both sides, regardless of the direction from which the obstacle squeezes the triggering component, a corresponding element can promptly sense and transmit a signal. For example, when the obstacle is located on one side of the triggering component, the element closer to that side will sense it first and quickly trigger the safety protection mechanism; if the obstacle is large, elements on both sides can sense it, further improving the accuracy of the judgment. This design enables the safety protection module to better cope with various complex usage scenarios, improving the safety and practicality of the electric hanging cabinet.

[0039] Furthermore, the signal lines of at least two strain gauge electrical signal conversion elements are connected to the same signal processing unit for signal preprocessing, and the signal processing unit is built into the mezzanine space. Connecting the signal lines of at least two strain gauge electrical signal conversion elements to the same signal processing unit for signal preprocessing facilitates comprehensive analysis and processing of multiple signals. The signal processing unit can more accurately determine the motion state of the triggering component and the condition of obstacles based on information such as the signal strength and time difference transmitted by different components, thereby more precisely controlling the lifting and lowering actions of the hanging cabinet, making the control of the safety protection system more intelligent and precise.

[0040] Furthermore, the safety protection module is used to prevent the storage cabinet from pinching during its ascent. The storage cabinet includes a storage space and a base plate at the bottom of the storage space. At least one side of the storage cabinet has an item retrieval opening. The triggering component is freely inserted into the base plate below the item retrieval opening to form a side baffle. During the ascent of the storage cabinet, the triggering component is pressed down by an obstacle, causing it to press down on the strain gauge electrical signal conversion element in the interlayer space. By freely inserting the triggering component into the base plate below the item retrieval opening to form a side baffle, if an item or person approaches the item retrieval opening during the ascent of the cabinet, the triggering component will first come into contact with and be compressed. This structure can promptly trigger the strain gauge electrical signal conversion element in the interlayer space, stopping the cabinet from rising, effectively preventing pinching accidents and ensuring the personal safety of users, especially suitable for families with children.

[0041] Furthermore, the bottom plate below the item loading / unloading opening has an upwardly extending surround. The surround has an upwardly opening groove along its length, into which a strip-shaped trigger component is partially inserted. A vertical gap is provided between the upper surface of the surround and the exposed portion of the trigger component. The surround and groove design of the bottom plate below the item loading / unloading opening provide precise positioning and a stable installation structure for the strip-shaped trigger component. The insertion of the strip-shaped trigger component into the groove ensures its fixed position during normal use, preventing swaying or displacement. During frequent raising and lowering of the wall cabinet, the trigger component remains in the correct position, stably performing its anti-pinch function and improving the reliability of safety protection. For example, even if the wall cabinet experiences some vibration, the trigger component will not dislodge from its installation position, ensuring timely response in case of danger.

[0042] Furthermore, the strain gauge electrical signal conversion element is a piezoelectric element or a strain gauge. Piezoelectric elements and strain gauges are mature technologies with stable performance. When subjected to pressure, a piezoelectric element can quickly generate an electrical signal proportional to the pressure; a strain gauge can accurately reflect the strain through changes in its own resistance. In the safety protection module of the electric cabinet, they can stably convert the mechanical movement of the triggering component into an electrical signal, maintaining good working condition even after long-term use or in complex environments (such as changes in temperature and humidity), providing reliable protection for the safe operation of the cabinet.

[0043] Furthermore, the electric hanging cabinet also includes an outer cabinet with a bottom opening and a lifting drive mechanism mounted on the outer cabinet. The lifting drive mechanism drives the storage cabinet to move up and down through the bottom opening of the outer cabinet. The outer cabinet with the bottom opening and the lifting drive mechanism mounted on the outer cabinet provide a stable basic structure for the lifting and lowering of the storage cabinet. The lifting drive mechanism can precisely control the rising and falling of the storage cabinet, ensuring its smooth operation and avoiding problems such as shaking or jamming. This not only improves the user experience when using the hanging cabinet but also ensures that the safety protection module can work normally. Because the relative positional relationship between the triggering component and the sensing component is more stable during a stable lifting and lowering process, it is beneficial to accurately detect obstacles and trigger the safety protection mechanism in a timely manner. Attached Figure Description

[0044] Figure 1 This is a schematic diagram of the structure of the present invention when the locker is folded up;

[0045] Figure 2 This is a schematic diagram of the structure of this utility model when it is lowered into the locker;

[0046] Figure 3 This is a perspective view of the storage cabinet in this utility model from the rear view.

[0047] Figure 4 This is a right view of the storage cabinet in this utility model;

[0048] Figure 5 This is a schematic diagram of the structure of the base plate, triggering component, and sensing component combination in this utility model;

[0049] Figure 6 This is a schematic diagram of the structure of the bottom plate in this utility model;

[0050] Figure 7 This is a schematic diagram of the triggering component located below the base plate in this utility model;

[0051] Figure 8 for Figure 5 Enlarged view of a portion of point A in the middle;

[0052] Figure 9 for Figure 5 Enlarged view of a section at point B in the middle;

[0053] Figure 10 for Figure 5 Enlarged view of a section at point C;

[0054] Figure 11 This is a schematic diagram showing the distribution of sensing components located in the interlayer space below the base plate in this utility model.

[0055] Figure 12This is a schematic diagram of the structure combining the sensing component and the elastic buffer layer in this utility model.

[0056] The attached figures are labeled as follows:

[0057] Storage cabinet 100, storage space 110, base plate 120, enclosure 121, groove 122, floating connecting component 130, supporting cantilever 131, item retrieval opening 140, triggering component 200, interlayer space 210, anti-collision component 220, protruding rib 221, anti-pinch component 230, sensing component 300, strain electrical signal conversion element 310, elastic buffer layer 320, signal processing unit 400, outer cabinet body 500, lead screw 610, transmission nut 620. Detailed Implementation

[0058] The electric hanging cabinet includes a storage cabinet 100 that performs lifting and lowering movements and a safety protection module installed on the storage cabinet 100. The safety protection module includes:

[0059] A triggering component 200 is connected to the locker 100 and forms a mezzanine space 210 between the locker 100 and the locker 100, which allows the triggering component 200 to float. The triggering component 200 is triggered to move in the opposite direction when it is squeezed by an obstacle during the movement of the locker 100.

[0060] The sensing component 300 includes a strain electrical signal conversion element 310 configured as a thin sheet structure, which is disposed in the interlayer space 210 and is triggered by the reverse movement of the triggering component 200.

[0061] By incorporating a thin-film strain gauge electrical signal conversion element 310 within the interlayer space 210 between the storage cabinet 100 and the triggering component 200, the problems associated with current microswitches used in lift cabinets are resolved. Compared to signal triggering devices such as microswitches used in traditional lift cabinets, the strain gauge electrical signal conversion element 310 of this safety protection module is a thin-film structure and is located within the interlayer space 210. Unlike microswitches, it does not require a large receiving cavity, thus reducing the space occupied inside the cabinet and facilitating a compact design that meets the space-efficient utilization needs of modern homes.

[0062] The strain gauge electrical signal conversion element 310 is employed, which is highly sensitive to minute forces. As soon as the triggering component 200 reverses its movement, the strain gauge electrical signal conversion element 310 is quickly activated, transmitting a signal promptly. Compared to mechanical triggering methods that rely on physical contact, this method can detect obstacles more accurately, improving the timeliness and accuracy of safety protection. During the upward movement of the overhead cabinet, when the triggering component 200 is subjected to extremely slight pressure, the strain gauge electrical signal conversion element 310 can respond quickly, stopping the cabinet from rising and effectively preventing pinching accidents.

[0063] Unlike traditional microswitches, which are prone to spring fatigue and contact wear leading to false triggering or malfunction, this safety protection module has a relatively simple structure. Furthermore, the strain gauge electrical signal conversion element 310 is not easily damaged under normal use, exhibiting better durability. This reduces the frequency of maintenance and component replacement, thereby lowering operating costs.

[0064] During the process of triggering the sensing component 300, the triggering component 200 mainly achieves the action through the change of electrical signal of the strain electrical signal conversion element 310, which avoids the noise generated by mechanical collision, creates a quieter operating environment for users, and improves the user experience.

[0065] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0066] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0067] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0068] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0069] See Figures 1 to 12This is an embodiment of the electric hanging cabinet of the present invention. The electric hanging cabinet includes a storage cabinet 100 that performs lifting and lowering movements and a safety protection module provided on the storage cabinet 100. The safety protection module is mainly used to prevent the storage cabinet 100 from touching obstacles during movement, which could lead to a safety accident.

[0070] In this embodiment, the safety protection module includes a triggering component 200 and a sensing component 300. The triggering component 200 is connected to the locker 100 and forms a mezzanine space 210 between itself and the locker 100, allowing the triggering component 200 to float. During the movement of the locker 100, the triggering component 200 is triggered to move in the opposite direction by being squeezed by an obstacle. For example, if the locker 100 is moving downwards, the triggering component 200 will move upwards relative to the locker 100 after being squeezed by an obstacle; similarly, if the locker 100 is moving upwards, the triggering component 200 will move downwards relative to the locker 100 after being squeezed by an obstacle. The sensing component 300 includes a strain electrical signal conversion element 310 that forms a sheet-like structure. The strain electrical signal conversion element 310 is disposed in the mezzanine space 210 and is triggered by the reverse movement of the triggering component 200. For example, if the storage cabinet 100 is moving downwards, the triggering component 200 will move upwards relative to the storage cabinet 100 after being squeezed by an obstacle. The triggering component 200 will cause the strain electrical signal conversion element 310 to be squeezed. The strain electrical signal conversion element 310 will convert the squeezing force into an electrical signal and send it out. When the electric hanging cabinet receives the signal, it can immediately take protective measures, such as immediately stopping operation, thereby avoiding the occurrence of safety accidents.

[0071] The strain gauge electrical signal conversion element 310 has a thin sheet structure and is located in the interlayer space 210. Compared with the traditional method of using microswitches which requires a receiving cavity, it greatly reduces the space occupied inside the wall cabinet, meeting the needs of modern homes for efficient space utilization and compact design. In environments with limited space, such as kitchens, this compact design can free up more storage and activity space for users. The strain gauge electrical signal conversion element 310 is sensitive to minute forces. When the triggering component 200 is squeezed by an obstacle and moves in the opposite direction, it can quickly trigger the strain gauge electrical signal conversion element 310 to act, promptly transmitting a signal and accurately detecting the obstacle, improving the timeliness and accuracy of safety protection. During the movement of the wall cabinet, even if the triggering component 200 is subjected to extremely slight pressure, it can quickly stop the wall cabinet's movement, effectively avoiding pinching accidents and providing strong protection for user safety.

[0072] Unlike traditional microswitches, which are prone to spring fatigue and contact wear leading to false triggering or malfunction, this safety protection module has a relatively simple structure. The strain gauge signal conversion element 310 is not easily damaged under normal use, exhibiting better durability and reducing the frequency of maintenance and component replacement, thus lowering user costs. For electric wall cabinets used for extended periods, this not only saves on maintenance costs but also extends the overall product lifespan, providing users with a more economical and practical experience.

[0073] The structure and layout of the sensing component 300 are described in detail below:

[0074] The sensing component 300 can be fixed to the locker 100 or to the triggering component 200. When the sensing component 300 is fixed to the locker 100, the triggering component 200 will collide with the strain gauge electrical signal conversion element 310 after encountering resistance, thereby triggering an electrical signal in the strain gauge electrical signal conversion element 310. If the impact force on the strain gauge electrical signal conversion element 310 is too large, it may be damaged. In order to extend the service life of the strain gauge electrical signal conversion element 310, an elastic buffer layer 320 is provided between the strain gauge electrical signal conversion element 310 and the triggering component 200. The elastic buffer layer 320 can reduce the impact of the triggering component 200 on the strain gauge electrical signal conversion element 310, and can also allow the force of the triggering component 200 to be transmitted to the strain gauge electrical signal conversion element 310, ensuring that the strain gauge electrical signal conversion element 310 can operate normally. The elastic buffer layer 320 can be made of elastic materials such as rubber or silicone, and the elastic buffer layer 320 can also return to its initial state after the triggering component 200 is removed. The elastic buffer layer 320 can also evenly distribute the impact force transmitted by the triggering component 200 or the locker 100 to the entire contact surface of the strain electrical signal conversion element 310, so as to avoid damage to the element due to excessive force at a single point or in a local area.

[0075] When the sensing component 300 is fixed to the triggering component 200, an elastic buffer layer 320 can be provided between the strain signal conversion element 310 and the storage cabinet 100 to achieve the above-mentioned purpose. Of course, the strain signal conversion element 310 can also have an elastic buffer layer 320 provided between it and both the triggering component 200 and the storage cabinet 100 to reduce the impact of the triggering component 200 on the strain signal conversion element 310 and extend the service life of the strain signal conversion element 310.

[0076] In addition to preventing strong impacts from the triggering component 200, the elastic buffer layer 320 will not shift even if the cabinet vibrates, shakes, or experiences relative movement between components during use, ensuring a consistently stable and reliable buffering effect. This allows the safety protection module to maintain accurate sensing and response to obstacles, improving the safety of the cabinet and avoiding problems such as inaccurate sensing or false triggering caused by the shifting of the elastic buffer layer 320.

[0077] Furthermore, the elastic buffer layer 320 is attached to the strain gauge electrical signal conversion element 310, thus ensuring a fixed relative position between the elastic buffer layer 320 and the strain gauge electrical signal conversion element 310. Compared to the unattached case, even when the cabinet is frequently raised and lowered, causing vibration and shaking, or when there is relative movement between components, the elastic buffer layer 320 will not shift. This ensures that the buffering effect remains stable and reliable, enabling the safety protection module to accurately sense obstacles and respond promptly. In daily use of the cabinet, frequent vibrations may cause the unattached elastic buffer layer 320 to shift, resulting in its inability to effectively buffer the impact force of the triggering component 200 on the strain gauge electrical signal conversion element 310. The attached design avoids this problem, continuously providing stable buffering protection for the strain gauge electrical signal conversion element 310 and ensuring the normal functioning of the safety protection function. The elastic buffer layer 320 can be attached to the strain gauge electrical signal conversion element 310 by means of bonding, heat pressing, or chemical coating.

[0078] In this embodiment, the safety protection module also includes an elastic protective sleeve, which at least partially encloses and protects the strain gauge electrical signal conversion element 310. Elastic buffer layers 320 are formed on both sides of the strain gauge electrical signal conversion element 310 in the thickness direction. That is, an elastic protective sleeve forms an elastic buffer layer 320 around the strain gauge electrical signal conversion element 310. When the triggering component 200 is pressed by an obstacle and triggers reverse movement, the elastic buffer layers 320 on both sides can disperse the impact force from multiple directions, more effectively protecting the strain gauge electrical signal conversion element 310 and reducing the risk of component damage due to impact. Compared to relying solely on a single elastic buffer layer 320, this design makes the triggering action smoother, improving the sensitivity and reliability of the safety protection module. During the descent of the cabinet, if the triggering component 200 is suddenly subjected to a large impact force, the buffer layers on both sides of the elastic sleeve can work together to disperse the impact force in all directions, reducing the possibility of component damage.

[0079] Furthermore, being an elastic protective sleeve, it not only provides cushioning but also effectively prevents dust, moisture, and other impurities from entering the strain gauge signal conversion element 310. In environments such as kitchens, where there is a high concentration of moisture and oil, these impurities could affect the performance of the strain gauge signal conversion element 310 or cause damage. The elastic sleeve acts as a barrier, blocking impurities, extending the element's lifespan, and ensuring the long-term stable operation of the safety protection module. In the humid environment of a kitchen, the elastic sleeve prevents moisture from corroding the strain gauge signal conversion element 310, avoiding problems such as short circuits or abnormal signal transmission due to moisture.

[0080] In this embodiment, the strain gauge electrical signal conversion element 310 is either a piezoelectric element or a strain gauge. Using these two elements in the safety protection module of the electric wall cabinet ensures stable system operation. When subjected to pressure, the piezoelectric element stably generates an electrical signal proportional to the pressure; the strain gauge accurately reflects the strain through its own resistance change. Even after prolonged use or in complex environments, such as a kitchen environment with significant temperature and humidity variations, they maintain good working condition, providing reliable protection for the safe operation of the wall cabinet. The manufacturing processes for piezoelectric elements and strain gauges are mature, and product quality is controllable, reducing the risk of safety protection module failure due to component malfunction. These two elements effectively convert the mechanical motion of the triggering component 200 into an electrical signal. When the triggering component 200 is squeezed by an obstacle and moves in the opposite direction, the piezoelectric element quickly generates an electrical signal, and the strain gauge also transmits a signal through resistance change, promptly triggering the safety protection mechanism. This efficient signal conversion capability allows the safety protection module to respond quickly to the appearance of obstacles, stopping the wall cabinet's lifting and lowering in time to avoid collisions or pinching accidents. During the descent of the cabinet, once the triggering component 200 comes into contact with an obstacle, the piezoelectric or strain gauge can immediately convert the movement of the triggering component 200 into an electrical signal, which is transmitted to the control system, causing the cabinet to stop descending quickly and protecting the safety of the cabinet and surrounding items.

[0081] The safety protection module of the sensing component 300 with the above structure can be used for anti-pinch during the rising of the locker 100, or for anti-collision during the falling of the locker 100. Of course, it can also be used for both anti-pinch and anti-collision during the rising. Examples of its application to anti-pinch during the rising and anti-collision during the falling of the locker 100 will be given below. In order to separate the triggering components 200 for anti-pinch during the rising and anti-collision during the falling, the triggering component 200 is defined as the anti-pinch component 230, and the triggering component 200 is positioned as the anti-collision component 220 during the falling.

[0082] Drop-off collision avoidance:

[0083] like Figures 4 to 8 , Figure 10 The locker 100 includes a storage space 110 and a base plate 120 located at the bottom of the storage space 110. The triggering component 200 is located below the base plate 120. The connection between the triggering component 200 and the base plate 120 can be in accordance with the method of existing patents, which involves suspending it below the base plate 120 through components such as guide posts, bolts, and springs. However, this method has two drawbacks: firstly, these suspension components require a large installation space, which increases the thickness of the bottom of the locker; secondly, when the triggering component 200 is subjected to uneven force, the triggering part will not move along the axial direction of the guide post, and the triggering component 200 will deflect to a certain extent, which may cause the guide post to rub against the mounting hole and get stuck.

[0084] Therefore, a new installation structure is adopted in this embodiment: the anti-collision member 220 is floatingly connected to the base plate 120 below it to form a sandwich space 210. The anti-collision member 220 floats upwards when squeezed by obstacles during the descent of the storage cabinet 100. This structure allows the anti-collision member 220 to independently and flexibly sense obstacles. Once the cabinet encounters an obstacle during descent, the anti-collision member 220 will react quickly and float upwards immediately. Compared to traditional anti-collision structures, this eliminates the need for complex transmission processes, significantly shortening the time from contact with an obstacle to triggering the protection mechanism, allowing the storage cabinet 100 to stop descending more promptly and effectively preventing collisions. In practical applications, when an item suddenly appears below the cabinet, the floating anti-collision member 220 can detect it instantly, preventing the cabinet from descending and protecting the safety of the cabinet and the items below. Because the anti-collision member 220 is suspended below the base plate 120, each part can independently sense obstacles. Even with single-point force, it can flexibly float upwards to trigger the sensing component 300. Unlike structures with guide pillars, this design avoids trigger delays or failures due to deflection from a single point of force. Regardless of the obstacle's location, the anti-collision component 220 reacts reliably, significantly improving its reliability and better protecting the items inside the locker 100 and the surrounding environment. In complex environments, even with irregularly positioned obstacles, the anti-collision component 220 accurately senses and triggers protection, ensuring the safety of the hanging cabinet.

[0085] Furthermore, there are many ways to achieve the suspension of the anti-collision component 220 below the base plate 120. For example, elastic elements can be used for connection, such as elastic ropes or springs, to suspend the anti-collision component 220 below the base plate 120; magnetic force can also be used to achieve levitation. However, since the purpose of this solution is only to allow the anti-collision component 220 to float freely after being obstructed by obstacles, and it is necessary to reduce the thickness of the bottom of the storage cabinet 100, the following method will be used in this embodiment to achieve the suspension of the anti-collision component 220 and the base plate 120.

[0086] Floating connecting members 130 are provided on opposite sides of the lower surface of the base plate 120. Each floating connecting member 130 has extending supporting cantilever arms 131. A plate-like anti-collision member 220 rests freely on the supporting cantilever arms 131 to achieve a floating connection with the base plate 120. In this embodiment, the floating connecting member 130 has an L-shaped or similar cross-section. Its vertical length determines the upward floating distance of the anti-collision member 220, while the horizontal portion forms the supporting cantilever arms 131, used to support the anti-collision member 220 upwards. The structural design of the supporting cantilever arms 131 allows the triggering member 200 to float upwards sensitively when pressed by an obstacle. When an obstacle appears, the triggering member 200 can respond promptly, quickly transmitting pressure to the strain electrical signal conversion element 310. Because the triggering member 200 rests freely on the cantilever arms, it can act quickly under pressure, transmitting a signal to ensure that the safety protection module can detect the obstacle in time, causing the hanging cabinet to stop descending promptly and effectively avoiding collision accidents. In real-world applications, if the triggering component 200 fails to sensitively detect obstacles, the cabinet may collide with them, causing damage. The design of the supporting cantilever 131 effectively solves this problem, improving the timeliness and reliability of safety protection.

[0087] This design provides stable support for the trigger component 200, allowing it to float securely below the base plate 120 under normal conditions. Even with frequent raising and lowering of the wall cabinet, the trigger component 200 is not prone to swaying or shifting, maintaining its relative position to the base plate 120 and ensuring the stable operation of the safety protection module. During daily use of the wall cabinet, frequent raising and lowering movements will generate vibrations. If the support for the trigger component 200 is unstable, its position may change, affecting the safety protection effect. The design of the supporting cantilever 131 effectively avoids this situation, ensuring that the trigger component 200 floats stably and functions reliably.

[0088] Furthermore, the base plate 120 of the storage cabinet 100 is generally rectangular, so the anti-collision member 220 is also made into a rectangular structure. The floating connecting member 130 can be set on the front and rear sides or the left and right sides of the base plate 120, and the anti-collision member 220 can be inserted from the other two sides. For example, if the floating connecting member 130 is set on the front and rear sides of the base plate 120, the anti-collision member 220 can be inserted from the left and right sides; similarly, if the floating connecting member 130 is set on the left and right sides of the base plate 120, the anti-collision member 220 can be inserted from the front and rear sides. In this embodiment, the floating connecting member 130 is set on the front and rear sides of the storage cabinet 100, and the anti-collision member 220 is inserted from the left and right sides. To ensure that the anti-collision member 220 is inserted in place, one side or both sides of the floating connecting member 130 can be closed. For example, baffles can be set on both the left and right sides to abut against the anti-collision member 220, thereby positioning the anti-collision member 220 in four directions: front, rear, left, and right. If the locker 100 has a side panel, the side panel can be extended to the side of the supporting cantilever 131 to form a baffle, thereby limiting the position of the anti-collision member 220. This ensures that the anti-collision member 220 is in the correct anti-collision position and does not obstruct the movement of the anti-collision member 220 in the vertical direction.

[0089] The floating connecting member 130 can be continuously or intermittently arranged along one side of the lower surface of the base plate 120. To avoid creating unsanitary corners, in this embodiment, the floating connecting member 130 is arranged continuously on one side of the lower surface. Furthermore, the floating connecting member 130 is integrally manufactured with the base plate 120 to enhance the structural strength of the floating connecting member 130.

[0090] like Figure 7 , Figure 8As shown, based on the above embodiment, the anti-collision member 220 has outwardly extending ribs 221 on opposite sides. The ribs 221 rest freely on the supporting cantilever 131, and part of the anti-collision member 220 protrudes downward from the lower surface of the supporting cantilever 131. The ribs 221 increase the contact area and friction between the anti-collision member 220 and the supporting cantilever 131, effectively reducing its horizontal displacement and sway. Even when the cabinet is frequently raised and lowered or affected by external vibrations, the anti-collision member 220 can maintain an accurate position, ensuring the reliable operation of the safety protection module. In daily use of the cabinet, frequent raising and lowering operations will cause the anti-collision member 220 to be vibrated. If the stability of the anti-collision member 220 is insufficient, it may shift its position, leading to false triggering or missed triggering. The design of the ribs 221 can solve this problem well, ensuring that the anti-collision member 220 remains stable in complex environments. Part of the anti-collision member 220 protrudes downward from the lower surface of the supporting cantilever 131, making it easier for it to contact obstacles. During the descent of the wall-mounted cabinet, if an obstacle appears, the protruding part can detect and be compressed more quickly. Because the protruding part is closer to the obstacle, it can rapidly transfer the compressive force to the anti-collision component 220 upon encountering it, causing the anti-collision component 220 to float upward more quickly, triggering the sensing component 300. This design optimizes the timeliness of the trigger response, more effectively preventing the wall-mounted cabinet from colliding with obstacles and protecting the safety of the wall-mounted cabinet and surrounding items. In practical use, the rapid trigger response can stop the wall-mounted cabinet from descending at the first moment, reducing damage caused by collisions.

[0091] like Figure 9 As shown, in this embodiment, the strain gauge electrical signal conversion element 310 is fixedly installed at the bottom of the base plate 120. A false trigger compensation gap is provided between the anti-collision member 220 and the strain gauge electrical signal conversion element 310. That is, in its natural state, the anti-collision member 220 and the strain gauge electrical signal conversion element 310 do not contact each other, but rather have a gap. The false trigger compensation gap δ is approximately 1-2 mm, which effectively reduces the probability of false triggering due to unexpected factors. In daily use of the electric hanging cabinet, vibrations and minor displacements are unavoidable. Without this false trigger compensation gap, slight movements of the triggering component 200 or the base plate 120 may falsely trigger the strain gauge electrical signal conversion element 310, causing the hanging cabinet to unnecessarily stop lifting. The existence of the false trigger compensation gap provides a buffer space; the strain gauge electrical signal conversion element 310 will only be triggered when the triggering component 200 is subjected to sufficient pressure from an obstacle, ensuring the accuracy of the safety protection module's operation. In a kitchen environment, frequent opening and closing of cabinet doors and the taking and placing of items can cause vibrations in the wall cabinets. The false trigger compensation gap can prevent these vibrations from causing false triggers and ensure the stable operation of the safety protection module. If the strain gauge electrical signal conversion element 310 is installed on the triggering component 200, a false trigger compensation gap is reserved between the base plate 120 and the strain gauge electrical signal conversion element 310.

[0092] like Figure 10 As shown, due to the large area beneath the base plate 120, the corresponding anti-collision component 220 also has a large area. To ensure accurate triggering, this embodiment has four sensing components 300, located at the four corners of the anti-collision component 220, significantly improving the sensing range and capability of the safety protection module. Regardless of the direction from which an obstacle presses against the anti-collision component 220, a corresponding component can promptly sense and transmit a signal. In actual use, the position and direction of the obstacle are uncertain. The design of multiple strain electrical signal conversion components 310 ensures timely detection of obstacles under various conditions, triggering the safety protection mechanism promptly, reducing the risk of the locker 100 colliding with or pinching items or people, and providing users with more comprehensive safety protection. During the descent of the locker 100, if an obstacle appears on one side of the anti-collision component 220, the strain electrical signal conversion component 310 near that side will quickly sense it, causing the locker 100 to stop descending in time and avoid a collision.

[0093] In practical use, the situations in which the anti-collision component 220 is subjected to pressure from obstacles are complex and varied. The layout of multiple strain gauge electrical signal conversion elements 310 enables the safety protection module to better cope with various complex scenarios. In the kitchen, items of various shapes and sizes may be placed under the storage cabinet 100. Multiple strain gauge electrical signal conversion elements 310 can ensure that the protection mechanism is triggered in a timely manner regardless of how the obstacle appears, protecting the safety of the storage cabinet 100 and surrounding items. The simultaneous operation of multiple strain gauge electrical signal conversion elements 310 can obtain force information on the anti-collision component 220 from multiple angles, enhancing the accuracy of obstacle situation judgment. When the obstacle is large, both sides of the elements can sense it. By comprehensively analyzing the signal strength, time difference, and other information transmitted by different elements, the movement state of the anti-collision component 220 and the situation of the obstacle can be judged more accurately, thereby controlling the lifting and lowering of the storage cabinet 100 more precisely, making the control of the safety protection system more intelligent and precise. When encountering a large obstacle, the signals transmitted by the strain electrical signal conversion elements 310 on both sides allow the control system to more accurately determine the size and position of the obstacle, thereby taking more appropriate measures, such as slowly stopping the descent of the locker 100 or stopping it immediately, to avoid damage caused by a collision.

[0094] Furthermore, the signal lines of at least two strain gauge electrical signal conversion elements 310 are connected to the same signal processing unit 400 for signal preprocessing. The signal processing unit 400 is built into the mezzanine space 210. In this embodiment, all four strain gauge electrical signal conversion elements 310 are electrically connected to the same signal processing unit 400 for signal preprocessing, facilitating comprehensive analysis of multiple signals. When the strain gauge electrical signal conversion elements 310 at different positions sense the obstacle pressing the triggering component 200, they will generate electrical signals of different intensities and durations. The signal processing unit 400 can collect these signals and perform comprehensive analysis based on information such as signal strength and time difference to more accurately determine the movement state of the triggering component 200 and the condition of the obstacle. When one side of the triggering component 200 contacts the obstacle first, the strain gauge electrical signal conversion element 310 closer to that side will generate a signal first. By analyzing the signal time difference, the signal processing unit 400 can determine the approximate direction of the obstacle; by analyzing the signal strength, it can understand the force of the obstacle's compression, thus providing a basis for subsequent precise control of the cabinet's lifting and lowering. If the signal processing unit 400 is too thick, it may obstruct the normal operation of the strain gauge electrical signal conversion element 310. Therefore, clearance grooves can be provided on the base plate 120 and / or the anti-collision member 220 to provide sufficient mounting space for the signal processing unit 400 without hindering its normal operation. Alternatively, the signal processing unit 400 can be removed from the interlayer space 210 and placed in another location within the storage cabinet 100, such as at the rear. The position of the signal processing unit 400 can be flexibly set according to the actual structure and layout of the storage cabinet 100.

[0095] Anti-pinch during ascent:

[0096] like Figure 2 , Figure 4 , Figure 5 , Figure 9As shown, at least one side of the storage cabinet 100 has an item access opening 140. In this embodiment, the access opening is located at the front of the storage cabinet 100. An anti-pinch member 230 is freely inserted into the bottom plate 120 below the access opening to form a side baffle. When the storage cabinet 100 is rising, the anti-pinch member 230 is squeezed by an obstacle and presses down on the strain electrical signal conversion element 310 in the interlayer space 210. This structure can promptly trigger the strain electrical signal conversion element 310 in the interlayer space 210, stopping the cabinet from rising and effectively preventing pinching accidents, thus ensuring the personal safety of users. This design is particularly important for families with children, as it prevents children's hands or other body parts from being accidentally pinched when the cabinet rises, providing reliable safety for family use. In daily life, children may approach the access opening out of curiosity when the cabinet rises. The triggering component 200 can quickly sense and stop the cabinet from rising, avoiding injury. This design is applicable to various types of electric wall cabinets, whether in kitchens or other locations, as long as there is an access opening 140°, this structure can be used to achieve the anti-pinch function during upward movement. Its simple structure is easy to install and adjust, without significantly altering the original structure of the wall cabinet, making it easy to apply and promote in different product designs. For electric wall cabinets of different sizes and materials, the size and installation position of the trigger component 200 can be flexibly adjusted according to actual conditions to achieve effective anti-pinch protection during upward movement, improving the product's applicability and versatility.

[0097] Specifically, the bottom plate 120 below the item loading / unloading port 140 has an upwardly extending enclosure 121. The enclosure 121 has an upwardly opening groove 122 along its length. The anti-pinch component 230, in a strip-like structure, is inserted into the groove 122. A vertical gap (not shown in the figure) is reserved between the upper surface of the enclosure 121 and the exposed portion of the anti-pinch component 230. This vertical gap is the allowable downward pressure distance of the anti-pinch component 230 after being squeezed by an obstacle. This distance must be less than the allowable deformation stroke of the strain gauge electrical signal conversion element 310 under pressure. In other words, the downward movement distance of the anti-pinch component 230 needs to be controlled to avoid damaging the strain gauge electrical signal conversion element 310. This structure provides precise positioning for the trigger component 200, ensuring its fixed position during normal use and preventing arbitrary shaking or displacement. During frequent raising and lowering of the cabinet, the trigger component 200 always remains in the correct position, stably performing its anti-pinch function. The structure of the enclosure 121 and the groove 122 is like creating a "dedicated track" for the trigger component 200. No matter how the cabinet moves, the trigger component 200 can remain stable within it, avoiding the impact of position changes on the anti-pinch effect.

[0098] In this embodiment, the strain gauge electrical signal conversion element 310 is fixed at the bottom of the groove 122. Depending on the length of the anti-pinch member 230, multiple strain gauge electrical signal conversion elements 310 can be provided. The cross-section of the anti-pinch member 230 is an inverted convex shape, and the vertical gap is the distance between the convex step of the anti-pinch member 230 and the groove opening of the groove 122. The elastic buffer layer 320 provided on the outer periphery of the strain gauge electrical signal conversion element 310 can generate a certain amount of deformation, providing a certain movement gap for the anti-pinch member 230 to be pressed down, and after the anti-pinch member 230 loses the obstruction, the elastic buffer layer 320 can help the anti-pinch member 230 return to its original position.

[0099] like Figures 1 to 3 As shown, the entire electric wall-mounted cabinet includes a fixed outer cabinet 500 and a height-adjustable storage cabinet 100. A lifting drive mechanism is installed on the outer cabinet 500, which has an opening at the bottom. The lifting drive mechanism allows the storage cabinet 100 to extend from this opening, enabling its lifting function. The outer cabinet 500 provides stable support for the storage cabinet 100, ensuring reliable support during lifting. The lifting drive mechanism precisely controls the rise and fall of the storage cabinet 100, ensuring smooth operation and preventing swaying or jamming. In practical use, the stable structure ensures the wall-mounted cabinet remains safe and reliable even under frequent lifting operations, reducing safety hazards caused by structural instability.

[0100] The lifting drive mechanism can be a linear actuator, which includes a motor, a lead screw 610 driven by the motor, and a transmission nut 620 fitted onto the lead screw 610. The motor and lead screw 610 can be installed inside the outer cabinet 500, and the transmission nut 620 is connected to the storage cabinet 100, thus realizing the lifting action of the storage cabinet 100. In addition to the lifting drive mechanism with the above structure, a gear and rack transmission mechanism, a synchronous belt transmission mechanism, or a pneumatic / hydraulic cylinder transmission mechanism can also be used to realize the lifting function of the storage cabinet 100.

[0101] In this embodiment, the triggering direction of the sensing component 300 is parallel to the floating direction of the triggering component 200. Alternatively, the sensing component 300 can be tilted, meaning its triggering direction forms an angle with the floating direction of the triggering component 200. The key is that the triggering component 200, after floating, can press against the sensing component 300 and trigger its action. Of course, the triggering direction of the sensing component 300 can also be parallel to the floating direction of the triggering component 200. In this case, a force-transmitting component can be used to transfer force to the sensing component 300 when the triggering component 200 floats. For example, the force-transmitting component could be an elastic rubber part that, after being pressed by the triggering component 200, undergoes elastic deformation and then triggers the sensing component 300. Alternatively, the sensing component 300 can float and touch the storage cabinet, causing elastic deformation that presses against the sensing component 300 and triggers its action.

[0102] In use, the lifting drive mechanism is started by controlling the operation via wired or wireless means to drive the locker 100 to descend from the outer cabinet 500. If other objects are placed below the locker 100, the anti-collision member 220 at the bottom of the locker 100 will float upwards after touching the obstacle and being squeezed by the obstacle. If the obstacle is relatively large, the entire anti-collision member 220 will float upwards. If the obstacle is relatively small, the anti-collision member 220 may swing or a certain corner may be tilted upwards. Regardless of the upward floating shape of the anti-collision member 220, the floating anti-collision member 220 will squeeze the elastic buffer layer upwards and trigger the strain electrical signal conversion element 310. The strain electrical signal conversion element 310 will send an electrical signal to the signal processing unit 400 for signal preprocessing and then feed it back to the lifting drive mechanism to control the motor to stop running, thereby stopping the descent of the locker 100. When the locker 100 needs to rise, the motor drives the lead screw 610 to rotate in the opposite direction, and the locker 100 begins to rise. If the user reaches in to take an object from the locker 100 or if an object is located in the item retrieval opening 140, it will squeeze the anti-pinch member 230. The anti-pinch member 230 may be pressed down as a whole or partially until it touches the strain electrical signal conversion element 310 in the interlayer space to generate an electrical signal. After the signal processing unit 400 performs signal preprocessing, it is fed back to the lifting drive mechanism to control the motor to stop running, thereby stopping the locker 100 from rising.

[0103] The above description is only a specific embodiment of the present utility model, but the technical features of the present utility model are not limited thereto. Any changes or modifications made by those skilled in the art within the scope of the present utility model are covered by the patent scope of the present utility model.

Claims

1. An electric hanging cabinet, comprising a storage cabinet capable of lifting and lowering and a safety protection module mounted on the storage cabinet, characterized in that, The security protection module includes: A triggering component is connected to the locker and forms a mezzanine space between the locker and the locker, allowing the triggering component to float. The triggering component is triggered to move in the opposite direction when it is squeezed by an obstacle during the movement of the locker. The sensing component includes a strain electrical signal conversion element configured as a thin sheet, the strain electrical signal conversion element being disposed in the interlayer space and triggered by the reverse movement of the triggering component.

2. The electric hanging cabinet as described in claim 1, characterized in that, An elastic buffer layer is spaced between the triggering component and the strain electrical signal conversion element and / or between the storage cabinet and the strain electrical signal conversion element.

3. The electric hanging cabinet as described in claim 2, characterized in that, The elastic buffer layer is attached to the strain electrical signal conversion element.

4. The electric hanging cabinet as described in claim 3, characterized in that, The safety protection module also includes an elastic sheath, which at least partially encloses and protects the strain electrical signal conversion element, forming an elastic buffer layer on both sides of the strain electrical signal conversion element in the thickness direction.

5. The electric hanging cabinet as described in claim 1, characterized in that, The safety protection module is used for the descent and collision prevention of the locker. The locker includes a storage space and a base plate located at the bottom of the storage space. The triggering component is floatingly connected to the base plate below it to form the interlayer space. The triggering component floats upward when it is squeezed by an obstacle during the descent of the locker.

6. The electric hanging cabinet as described in claim 5, characterized in that, The lower surface of the base plate is provided with floating connecting members on opposite sides. The floating connecting members on both sides have supporting cantilever arms extending towards each other. The triggering component, which is set as a plate structure, is freely placed on the supporting cantilever arms on both sides to achieve a floating connection with the base plate.

7. The electric hanging cabinet as described in claim 6, characterized in that, The triggering component has outwardly extending ribs on opposite sides, which rest freely on the supporting cantilever, with a portion of the triggering component protruding downward from the lower surface of the supporting cantilever.

8. The electric hanging cabinet as described in claim 5, characterized in that, The strain signal conversion element is mounted on the base plate, and a mis-touch compensation gap is reserved between the triggering component and the strain signal conversion element; or, the strain signal conversion element is mounted on the triggering component, and a mis-touch compensation gap is reserved between the base plate and the strain signal conversion element.

9. The electric hanging cabinet as described in claim 5, characterized in that, The sensing component includes at least two strain electrical signal conversion elements, which are distributed on opposite sides of the interlayer space.

10. The electric hanging cabinet as described in claim 9, characterized in that, The signal lines of the at least two strain electrical signal conversion elements are connected to the same signal processing unit for signal preprocessing, and the signal processing unit is built into the interlayer space.

11. The electric hanging cabinet as described in claim 1, characterized in that, The safety protection module is used to prevent the locker from being pinched when it rises. The locker includes a storage space and a base plate at the bottom of the storage space. At least one side of the locker has an item retrieval opening. The triggering component is freely inserted into the base plate below the item retrieval opening to form a side baffle. When the locker rises, the triggering component is squeezed by an obstacle and presses down on the strain electrical signal conversion element in the interlayer space.

12. The electric hanging cabinet as described in claim 11, characterized in that, The bottom plate below the item loading / unloading port has an upwardly extending enclosure. The enclosure has an upwardly opening groove along its length. A trigger component, which is a strip structure, is inserted into the groove. A vertical gap is reserved between the upper surface of the enclosure and the exposed part of the trigger component.

13. The electric hanging cabinet as described in claim 1, characterized in that, The strain gauge electrical signal conversion element is a piezoelectric element or a strain gauge.

14. The electric hanging cabinet as described in claim 1, characterized in that, The electric hanging cabinet also includes an outer cabinet with a bottom opening and a lifting drive mechanism installed on the outer cabinet. The lifting drive mechanism drives the storage cabinet to move up and down from the bottom opening of the outer cabinet.

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