Anti-collision and anti-pinch lifting wall cupboard

Abstract

The utility model discloses an anti-collision and anti-pinch lifting wall cupboard, which relates to the field of cupboards, and comprises an outer cupboard body, a lifting cupboard body, a lifting mechanism, a weighing sensor and a controller, the lower side of the outer cupboard body is provided with a lifting opening communicated with the inner cavity of the outer cupboard body, the lifting cupboard body is arranged in the outer cupboard body, and the lifting mechanism is arranged in the outer cupboard body. The controller is electrically connected to the lifting mechanism; the lifting mechanism is connected with a lifting support, the weighing sensor comprises a metal sensitive beam and a strain gauge, and the strain gauge is attached to the surface of the metal sensitive beam and electrically connected to the controller; and the metal sensitive beam is fixedly connected between the lifting support and the lifting cabinet body. The lifting cabinet has the advantages that the mounting position of the pressure sensor is not limited, and the anti-collision and anti-pinch functions of the lifting cabinet are comprehensive.

Description

Technical Field

[0001] The utility model relates to the field of cabinets, in particular to an anti-collision and anti-pinching lifting cabinet. Background Art

[0002] Wall cabinets are common storage furniture, which are usually installed at a higher position on the wall to make comprehensive use of home space. In order to facilitate users to store and retrieve items in wall cabinets, some existing wall cabinets are set to be liftable. When users take or place items, the cabinet body descends to a distance close to the user, which is convenient for users to operate; after taking or placing items, the cabinet body rises to reduce the occupation of user activity space.

[0003] As liftable wall cabinets need to be lifted vertically, there is a risk of pinching people's hands or colliding with other obstacles, so liftable wall cabinets are usually equipped with anti-pinch and anti-collision functions. Specifically, existing anti-collision and anti-pinch liftable wall cabinets usually have a pressure sensor at the bottom of the liftable wall cabinet body. When the liftable wall cabinet descends and touches an obstacle or a human body, the pressure sensor detects stress and the liftable wall cabinet stops descending to avoid damage to the human body or the cabinet body.

[0004] In the above-mentioned anti-collision and anti-pinch lifting cabinet, the pressure sensor can only detect pressure when the lifting cabinet descends and the bottom plate of the lifting cabinet contacts an object, while the pressure sensor cannot detect pressure when other side plates of the lifting cabinet contact an object, resulting in the inability to realize the anti-collision and anti-pinch function when obstacles such as human bodies or objects appear in other directions of the lifting cabinet; and the pressure sensor cannot withstand pulling force, so it can only be installed at the bottom of the lifting cabinet, and the installation position is limited. Summary of the invention

[0005] In order to solve the shortcomings of the prior art lifting cabinet that the pressure sensor installation position is limited and the anti-collision and anti-pinch functions can only be achieved at the bottom plate of the lifting cabinet, the utility model provides an anti-collision and anti-pinch lifting cabinet.

[0006] The above technical objectives of the utility model are achieved through the following technical solutions:

[0007] The utility model provides an anti-collision and anti-pinch lifting cabinet, the lifting cabinet comprising an outer cabinet, a lifting cabinet, a lifting mechanism, a weighing sensor and a controller, a lifting opening communicating with an inner cavity of the outer cabinet is provided on the lower side of the outer cabinet, the lifting cabinet is arranged in the outer cabinet; the lifting cabinet can pass through the lifting opening and protrude downward from the outer cabinet, and the controller is electrically connected to the lifting mechanism;

[0008] The lifting mechanism is connected to a lifting support, and the lifting mechanism can drive the lifting support to lift vertically, and the lifting support is arranged parallel to the lower side or the upper side of the lifting cabinet; the weighing sensor includes a metal sensitive beam and a strain gauge, and the strain gauge is attached to the surface of the metal sensitive beam and electrically connected to the controller; the metal sensitive beam is fixedly connected between the lifting support and the lifting cabinet, and the metal sensitive beam can be deformed between the lifting support and the lifting cabinet.

[0009] Furthermore, the metal sensitive beam is a rectangular strip-shaped metal component, and a first pad is fixedly connected between the first end of the metal sensitive beam and the lifting support, and the first pad supports the metal sensitive beam to leave the lifting support to form a first clearance space; a second pad is fixedly connected between the second end of the metal sensitive beam and the lifting cabinet, and the second pad supports the metal sensitive beam to leave the lifting cabinet to form a second clearance space.

[0010] Furthermore, the first pad and the second pad are both detachably arranged from the metal sensitive beam, the first pad is provided with a first through hole, the first end of the metal sensitive beam is provided with a second through hole, the lifting support is provided with a third through hole, the first through hole, the second through hole and the third through hole are aligned with each other and connected; the second pad is provided with a fourth through hole, the second end of the metal sensitive beam is provided with a fifth through hole, the lifting cabinet is provided with a sixth through hole, the fourth through hole, the fifth through hole and the sixth through hole are aligned with each other and connected.

[0011] Furthermore, the lifting support is arranged above the lifting cabinet and is parallel to the upper side of the lifting cabinet, and the weighing sensor is connected between the upper side of the lifting cabinet and the lower side of the lifting support.

[0012] Furthermore, four weighing sensors are provided, and the four weighing sensors are arranged at four corners of the lifting support in a one-to-one correspondence.

[0013] Furthermore, the lifting mechanism includes a motor, a gear assembly, a screw and a screw nut. The motor and the gear assembly are fixedly installed in the outer cabinet. The rotating shaft of the motor is transmission-connected to the gear assembly, and the output shaft of the gear assembly is connected to the screw. The screw is vertically arranged, and the screw nut cooperates with the screw, and the screw nut is fixedly connected to the lifting support.

[0014] Furthermore, the lifting support includes a horizontal support plate and a vertical connecting plate which are vertically connected, the horizontal support plate extends horizontally in a direction away from the vertical connecting plate and is connected above the weighing sensor; the vertical connecting plate extends vertically and is fixedly connected to the screw nut.

[0015] Furthermore, the lifting mechanism also includes a first guide rail and a second guide rail, the first guide rail is fixedly arranged in the outer cabinet parallel to the screw rod, the second guide rail is vertically provided with a guide groove, the first guide rail can be slidably engaged in the guide groove, and the second guide rail is fixedly connected to the vertical connecting plate.

[0016] Furthermore, the lifting cabinet also includes a mounting frame, which is fixed to the vertical inner wall of the outer cabinet body; the motor and the gear assembly are fixed in an installation box, and the installation box is fixedly connected to an external cover shell, which is sleeved outside the screw rod and fixedly connected to the mounting frame; the first guide rail is fixedly connected to the mounting frame.

[0017] Furthermore, a circle of blocking flanges is arranged at the bottom of the lifting cabinet, the blocking flanges are located at the lower side of the outer cabinet and abut against the edge of the lifting opening, and the outer periphery of the blocking flanges is covered with rubber strips.

[0018] In summary, the utility model has the following beneficial effects:

[0019] 1. In the utility model, the lifting cabinet is connected to the lifting support, and is lifted and lowered along the outer cabinet under the driving of the lifting mechanism, so as to enter and exit the outer cabinet from the lifting opening, so that the user can use the storage space in the lifting cabinet. The lifting support and the lifting cabinet are connected through a weighing sensor. Since the metal sensitive beam of the weighing sensor is relatively strong, it can be directly connected to the lifting support and the lifting cabinet, so that the connection between the lifting cabinet and the lifting support and the installation of the weighing sensor can be realized without setting an additional connection structure. The structure is relatively simple and the cost is relatively low.

[0020] 2. The weighing sensor is directly connected between the lifting support and the lifting cabinet, and the stress between the lifting cabinet and the lifting mechanism can be directly transmitted to the metal sensitive beam. Under the action of external force, the metal sensitive beam deforms between the lifting cabinet and the lifting support, driving the strain gauge to deform to obtain the stress change on the lifting cabinet and transmit the information to the controller. During the lifting process of the lifting cabinet, no matter where the lifting cabinet touches the user's fingers or other obstacles, the weighing sensor can detect the change in the weight of the lifting cabinet, that is, it detects that the lifting cabinet has been squeezed and collided. At this time, the controller can control the lifting mechanism to stop lifting or lift in the opposite direction to avoid pinching people's hands or avoid the anti-collision and anti-clamping lifting cabinet from colliding with and squeezing obstacles and being damaged. As a result, the lifting cabinet can not only prevent collision and clamping when there are obstacles below the lifting cabinet, but also prevent collision and clamping when there are obstacles in other directions of the lifting cabinet, further improving the safety of the anti-collision and anti-clamping lifting cabinet when in use.

[0021] 3. The weighing sensor is connected to the lifting support and the lifting cabinet through a metal sensitive beam, which can withstand both tension and pressure, so that the sensor can be connected below, above or on the side of the lifting cabinet, reducing the restrictions on the installation of the weighing sensor.

[0022] 4. When the lifting cabinet is in normal use, the value obtained by the weighing sensor is stable. At this time, the weight of the lifting cabinet can be known according to the value detected by the weighing sensor to prevent the lifting cabinet from being damaged by excessive load on the lifting cabinet. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a three-dimensional structural schematic diagram of a lifting cabinet according to an embodiment of the utility model.

[0024] Figure 2 It is a three-dimensional structural schematic diagram of a lifting cabinet when a movable cabinet is removed according to an embodiment of the utility model.

[0025] Figure 3 It is a schematic diagram of the vertical cross-sectional structure of a lifting cabinet through the axis of a screw rod according to an embodiment of the utility model.

[0026] Figure 4 The three-dimensional structure diagram of the lifting mechanism and the lifting support of one embodiment of the utility model Figure 1 .

[0027] Figure 5 It is a schematic diagram of the exploded structure of an installation box according to an embodiment of the utility model.

[0028] Figure 6 The three-dimensional structure diagram of the lifting mechanism and the lifting support of one embodiment of the utility model Figure 2 .

[0029] Figure 7 yes Figure 6 Enlarged structural diagram at A in the middle.

[0030] Figure 8 yes Figure 6 Enlarged structural diagram at B in the middle.

[0031] Fig. 9 It is a three-dimensional structural schematic diagram of a weighing sensor according to an embodiment of the utility model.

[0032] Fig.10 It is a schematic diagram of the vertical cross-sectional structure of a weighing sensor according to an embodiment of the utility model.

[0033] Fig.11 It is a vertical cross-sectional structural diagram of a controller according to an embodiment of the utility model.

[0034] In the figure:

[0035] 1000, lifting cabinet; 100, outer cabinet; 110, cabinet cavity; 120, lifting opening; 130, installation box; 200, lifting cabinet; 210, sixth through hole; 220, back plate; 230, side plate; 240, top plate; 250, bottom plate; 260, blocking flange; 270, rubber strip; 300, lifting mechanism; 310, motor; 320, gear assembly; 330, lead screw; 340, lead screw nut; 350, outer cover; 351, avoidance groove; 360, installation frame; 370, first guide rail; 380, second guide rail; 381, guide slide; 382, ​​limit wall; 400, weighing sensor; 410, metal sensitive beam; 41 1. Second through hole; 412. Fifth through hole; 420. First cushion block; 421. First through hole; 430. Second cushion block; 431. Fourth through hole; 500. Controller; 510. Control housing; 520. Circuit board; 600. Lifting support; 610. Horizontal support plate; 611. Wiring hole; 612. Third through hole; 620. Vertical connecting plate; 630. Reinforcement plate; 700. First clearance space; 800. Second clearance space. DETAILED DESCRIPTION

[0036] The utility model is further described below in conjunction with the accompanying drawings.

[0037] This embodiment discloses an anti-collision and anti-pinch lifting cabinet 1000, referring to Figures 1 to 3 , an anti-collision and anti-pinch lifting cabinet 1000, comprising an outer cabinet 100, a lifting cabinet 200, a lifting mechanism 300, a weighing sensor 400 and a controller 500. The lifting cabinet 200 is connected to the lifting mechanism 300 through a lifting support 600, and the lifting mechanism 300 is used to drive the lifting cabinet 200 to lift vertically, so that the lifting cabinet 200 is exposed from below or stored in the outer cabinet 100. The weighing sensor 400 is connected between the lifting support 600 and the lifting cabinet 200. The controller 500 is electrically connected to the lifting mechanism 300, and is used to control the operation of the lifting mechanism 300.

[0038] Reference Figure 1 and Figure 2, the outer cabinet 100 has a cabinet cavity 110, and the cabinet cavity 110 runs through the lower part of the outer cabinet 100 to form a lifting opening 120, and the lifting opening 120 is connected to the cabinet cavity 110. The outer cabinet 100 is fixedly arranged on the wall, and the lifting cabinet 200 is arranged in the cabinet cavity 110 of the outer cabinet 100. When it is necessary to take or place items from the lifting cabinet 1000, the lifting mechanism 300 drives the lifting cabinet 200 to descend and extends the outer cabinet 100 downward from the lifting opening 120 until the lifting cabinet 200 reaches a suitable height for the user to use the storage space in the lifting cabinet 200. After the items are taken or placed, the lifting mechanism 300 drives the lifting cabinet 200 to rise and retract upward from the lifting opening 120 into the outer cabinet 100 to reduce the space occupied by the lifting cabinet 1000 as a whole.

[0039] In this embodiment, the outer cabinet 100 is a square cabinet, and the cabinet cavity 110 is a rectangular cavity. In addition, in other embodiments, the outer cabinet 100 can also be a cabinet of other shapes.

[0040] Reference Figures 3 to 5 The lifting mechanism 300 includes a motor 310, a gear assembly 320, a lead screw 330 and a lead screw nut 340. The motor 310 and the gear assembly 320 are fixedly installed in the outer cabinet 100. The rotating shaft of the motor 310 is transmission-connected to the gear assembly 320, and the output shaft of the gear assembly 320 is connected to the lead screw 330. The lead screw 330 is vertically arranged in the outer cabinet 100, and the lead screw nut 340 is threadedly engaged with the lead screw 330. The lead screw nut 340 is fixedly connected to the lifting support 600, and the lifting support 600 is fixedly connected to the lifting cabinet 200, so as to realize the connection between the lead screw nut 340 and the lifting cabinet 200.

[0041] In this embodiment, the motor 310 is arranged horizontally, and the rotation output by the motor 310 is decelerated and turned through the gear assembly 320 and then output to the screw rod 330, driving the screw rod 330 to rotate. The screw nut 340 is threadedly matched with the screw rod 330 and is circumferentially limited to the screw rod 330, so that when the screw rod 330 rotates, the screw nut 340 is driven to move vertically, thereby driving the lifting cabinet 200 to rise and fall through the rotation of the screw rod 330.

[0042] Among them, the motor 310 is electrically connected to the controller 500, and the controller 500 can control the motor 310 to turn on and off, and control the motor 310 to rotate forward and reverse, thereby controlling the lifting cabinet 200 to start or stop lifting, and control the lifting cabinet 200 to rise or fall.

[0043] An installation box 130 is set in the outer cabinet body 100, and the motor 310, the gear assembly 320 and the controller 500 are fixed in the installation box 130, so as to protect the motor 310, the gear assembly 320 and the controller 500 through the installation box 130, while reducing the exposure of the electrical structure, thereby improving the safety and aesthetics of the lifting cabinet 1000.

[0044] Reference Figures 3 to 5 In this embodiment, the outer cover 350 is provided on the outer sleeve of the screw rod 330. The outer cover 350 is in a long strip shape and extends along the length direction of the screw rod 330. The outer cover 350 surrounds the screw rod 330 to enhance the IP protection capability of the screw rod 330. The outer cover 350 is fixedly connected to the installation box 130 and communicates with the installation box 130 to facilitate the installation of the screw rod 330. At the same time, the installation box 130 can be supported by the outer cover 350.

[0045] Reference Figures 3 to 7 A avoidance groove 351 is formed on the outer cover 350 , and the avoidance groove 351 extends along the length direction of the lead screw 330 , and the lead screw nut 340 extends from the avoidance groove 351 to be connected to the lifting support 600 .

[0046] The lifting mechanism 300 further includes a mounting frame 360, which is fixedly connected to the inner wall of the outer cabinet 100. Specifically, the mounting frame 360 ​​can be fixed to the inner wall of the left side, right side or back side of the outer cabinet 100. In this embodiment, the mounting frame 360 ​​is fixedly connected to the inner wall of the back side of the outer cabinet 100. The front side of the outer cabinet 100 is open, and the mounting frame 360 ​​is opposite to the opening of the outer cabinet 100. The outer cover 350 is fixed to the mounting frame 360, so that the outer cover 350 and the mounting box 130 are fixedly connected to the outer cabinet 100.

[0047] Two first guide rails 370 are fixed on the mounting frame 360. The two first guide rails 370 are arranged parallel to the screw rod 330, and the two first guide rails 370 are respectively arranged outside the two sides of the screw rod 330. Two second guide rails 380 are arranged on the side of the lifting support 600 facing the mounting frame 360. The second guide rails 380 are arranged parallel to the screw rod 330, and the second guide rails 380 are vertically provided with guide grooves 381. The first guide rails 370 are slidably arranged to fit in the guide grooves 381. Therefore, when the lifting support 600 is lifted vertically, the guide grooves 381 slide relative to the first guide rails 370, thereby guiding the lifting support 600, so that the lifting support 600 is more stable when moving vertically.

[0048] Reference Figure 7 and Figure 8In this embodiment, the length of the guide slot 381 is the same as that of the first guide rail 370. The bottom of the guide slot 381 has a limiting wall 382. When the lifting cabinet 200 is accommodated in the outer cabinet 100, the lower side of the first guide rail 370 abuts against the limiting wall 382 at the bottom of the guide slot 381 to limit the lifting cabinet 200.

[0049] Reference Figures 2 to 4 In this embodiment, the lifting support 600 is arranged above the lifting cabinet 200 and is parallel to the upper side of the lifting cabinet 200, and the weighing sensor 400 is arranged below the lifting support 600 and connected to the upper side of the lifting cabinet 200. The lifting support 600 pulls the lifting cabinet 200 upward, so that the lifting support 600 can better bear the load of the lifting cabinet 200 in the vertical direction. In addition, in other embodiments, the lifting support 600 can also be arranged on the side of the lifting cabinet 200 or below the lifting cabinet 200.

[0050] The lifting support 600 includes a horizontal support plate 610 and a vertical connecting plate 620, and the horizontal support plate 610 is vertically connected to the vertical connecting plate 620. The vertical support plate is vertically arranged parallel to the back side of the outer cabinet 100, and the lead screw nut 340 is fixedly connected to the vertical connecting plate 620. The second guide rail 380 is fixedly connected to the side of the vertical connecting plate 620 facing the mounting frame 360. The horizontal support plate 610 extends in a direction away from the vertical connecting plate 620.

[0051] The horizontal support plate 610 is provided with a wiring hole 611 for the wires of the weighing sensor 400 to pass through and connect to the controller 500 .

[0052] A reinforcing plate 630 is connected above the horizontal supporting plate 610 to enhance the structural strength of the lifting support 600 .

[0053] The weighing sensor 400 is disposed below the horizontal support plate 610 to bear the weight of the lifting cabinet 200 in the vertical direction, so that the weighing sensor 400 can measure the compressive stress of the lifting cabinet 200 more accurately.

[0054] Reference Figure 2 , Fig. 9 and Fig.10 In this embodiment, the weighing sensor 400 includes a metal sensitive beam 410 and a strain gauge, and the strain gauge is attached to the surface of the metal sensitive beam 410 and is electrically connected to the controller 500. The metal sensitive beam 410 is fixedly connected between the lifting support 600 and the lifting cabinet 200, and the metal sensitive beam 410 can be deformed between the lifting support 600 and the lifting cabinet 200.

[0055] Since the metal sensitive beam 410 is relatively strong, it can be directly connected to the lifting support 600 and the lifting cabinet 200 and bear the weight of the lifting cabinet 200. In this embodiment, no additional connecting structure is required to achieve the connection between the lifting cabinet 200 and the lifting support 600 and the installation of the weighing sensor 400. The structure is relatively simple and the cost is low.

[0056] Among them, the metal sensitive beam 410 is deformed between the lifting cabinet 200 and the lifting support 600 under the action of external force, driving the strain gauge to deform to obtain the stress change on the lifting cabinet 200 and transmit the information to the controller 500. During the lifting process of the lifting cabinet 200, no matter where the lifting cabinet 200 touches the user's hand or other obstacles, the weighing sensor 400 can detect the stress change of the lifting cabinet 200, that is, it detects that the lifting cabinet 1000 is squeezed and collided. At this time, the controller 500 can control the lifting mechanism 300 to stop lifting or lift in the opposite direction to avoid pinching people's hands or avoid the anti-collision and anti-clamping lifting cabinet 1000 from colliding with and squeezing obstacles and being damaged. As a result, the lifting cabinet 1000 can prevent collision and clamping when there are obstacles below the lifting cabinet 200, and can also prevent collision and clamping when there are obstacles in other directions of the lifting cabinet 200, further improving the safety of the anti-collision and anti-clamping lifting cabinet 1000 when in use.

[0057] When the lifting cabinet 1000 is in normal use, the weight of the lifting cabinet body 200 can be known according to the value detected by the weighing sensor 400 to prevent the lifting cabinet body 200 from being damaged due to excessive load.

[0058] In this embodiment, the metal sensitive beam 410 is a rectangular strip metal component, and a first cushion block 420 is fixedly connected between the first end of the metal sensitive beam 410 and the horizontal support plate 610. A second cushion block 430 is fixedly connected between the second end of the metal sensitive beam 410 and the upper side of the lifting cabinet 200. The first cushion block 420 separates the metal sensitive beam 410 from the horizontal support plate 610, thereby forming a first clearance space 700. The second cushion block 430 separates the metal sensitive beam 410 from the bottom of the lifting cabinet 200, thereby forming a second clearance space 800.

[0059] The setting of the first clearance space 700 reserves space for the metal sensitive beam 410 to deform toward the lifting support 600, and the setting of the second clearance space 800 reserves space for the metal sensitive beam 410 to deform toward the lifting cabinet 200, so that the metal sensitive beam 410 can be deformed between the lifting cabinet 200 and the lifting support 600 under the action of external force.

[0060] The weighing sensor 400 can withstand both tension and pressure. The weighing sensor 400 can be connected below, above or to the side of the lifting cabinet 200, which reduces the restrictions on the installation of the weighing sensor 400.

[0061] In this embodiment, the first pad 420 and the second pad 430 are detachably arranged from the metal sensitive beam 410, so as to facilitate the manufacturing and forming of the first pad 420, the second pad 430 and the metal sensitive beam 410. In this embodiment, the first pad 420 is connected to the first end of the metal sensitive beam 410 by bolts, and the second pad 430 is connected to the second end of the metal sensitive beam 410 by bolts.

[0062] Specifically, a first through hole 421 is formed on the first cushion block 420, a second through hole 411 is formed on the first end of the metal sensitive beam 410, and a third through hole 612 is formed on the horizontal support plate 610. The first through hole 421, the second through hole 411 and the third through hole 612 are aligned with each other and communicated. Bolts pass through the first through hole 421, the second through hole 411 and the third through hole 612 at the same time to fix the metal sensitive beam 410, the first cushion block 420 and the horizontal support plate 610.

[0063] The second cushion block 430 is provided with a fourth through hole 431, the second end of the metal sensitive beam 410 is provided with a fifth through hole 412, the upper side of the lifting cabinet 200 is provided with a sixth through hole 210, and the fourth through hole 431, the fifth through hole 412 and the sixth through hole 210 are aligned and connected with each other. Bolts pass through the fourth through hole 431, the fifth through hole 412 and the third through hole at the same time to fix the metal sensitive beam 410, the second cushion block and the lifting cabinet 200.

[0064] In addition, in other embodiments, the first cushion block 420 and / or the second cushion block 430 may also be formed integrally with the metal sensitive beam 410 .

[0065] In this embodiment, four weighing sensors 400 are provided, and the four weighing sensors 400 are arranged one by one at the four corners of the lower side of the horizontal support plate 610. Thus, the four weighing sensors 400 stably and evenly support the lifting cabinet 200, improve the stability of the anti-collision and anti-pinch lifting cabinet 1000, and make the readings of the four weighing sensors 400 more uniform. In addition, in other embodiments, the weighing sensors 400 can also be arranged at intervals of three or other suitable numbers.

[0066] Reference Figure 1 and Figure 3 In this embodiment, the lifting cabinet 200 is a cabinet with an opening at the front and closed on all sides. The lifting cabinet 200 includes two side panels 230, a top panel 240, a bottom panel 250 and a back panel 220. The back panel 220 is vertically arranged, the two side panels 230 are respectively arranged on the left and right sides of the back panel 220, the top panel 240 is arranged on the top of the back panel 220, and the bottom panel 250 is arranged on the bottom of the back panel 220 and connected to the weighing sensor 400. Among them, the weighing sensor 400 is fixedly connected to the top panel 240.

[0067] A circle of blocking flange 260 is arranged around the bottom plate 250 of the lifting cabinet 200. The blocking flange 260 is located at the lower side of the outer cabinet 100 and abuts against the edge of the lifting opening 120 to limit the lifting cabinet 200 after the lifting cabinet 200 is retracted into the outer cabinet 100. The outer circumference of the blocking flange 260 is covered with a rubber strip 270 to buffer the collision between the lifting cabinet 200 and the outer cabinet 100.

[0068] In addition, in other embodiments, the lifting cabinet 200 may also be a cabinet of other forms.

[0069] Reference Fig.11 The controller 500 includes a control housing 510 and a circuit board 520. The circuit board 520 is disposed in the control housing 510 and is protected by the control housing 510 to enhance the IP protection capability. The control housing 510 is fixed in the outer cabinet 100.

[0070] The circuit board 520 is electrically connected to the induction plate of the weighing sensor 400 and the motor 310 of the lifting mechanism 300 , so that the circuit board 520 can control the start, stop or reversal of the motor 310 according to the change of the value detected by the weighing sensor 400 .

[0071] In this embodiment, when the lifting cabinet 200 is lifted normally, the value detected by the weighing sensor 400 remains constant. At this time, the controller 500 controls the lifting mechanism 300 to drive the lifting cabinet 200 to lift normally to meet the user's use needs. When the lifting cabinet 200 encounters a hand or other obstacles, the value of the weighing sensor 400 changes. For example, when the lifting cabinet 200 encounters an obstacle during the descent process, the obstacle gives the lifting cabinet 200 an upward force to hinder the lifting cabinet 200 from descending, thereby reducing the reading of the weighing sensor 400. At this time, the controller 500 controls the lifting mechanism 300 to stop descending or controls the lifting mechanism 300 to drive the lifting cabinet 200 to rise to get rid of the obstacle. When the lifting cabinet 200 encounters an obstacle during the ascent process, the obstacle gives the lifting cabinet 200 a downward force to hinder the lifting cabinet 200 from rising, so that the reading of the weighing sensor 400 increases. At this time, the controller 500 controls the lifting mechanism 300 to stop rising or controls the lifting mechanism 300 to descend to get rid of the obstacle.

[0072] Preferably, a control button is provided on the outer side of the outer cabinet 100 or the upper side of the lifting cabinet 200, and the control button is electrically connected to the controller 500, so that the lifting mechanism 300 can be controlled to start, stop or reverse through the control button.

[0073] Preferably, the anti-collision and anti-pinch lifting cabinet 1000 also includes a battery, which is fixed in the installation box 130 and electrically connected to the motor 310. The battery is used to power the motor 310, so that the anti-collision and anti-pinch lifting cabinet 1000 can be arranged in a place without an external power supply, thereby improving its applicability.

[0074] In this embodiment, only one controller 500 is provided, and the four weighing sensors 400 are electrically connected to the same controller 500. The controller 500 obtains the weight of the lifting cabinet 200 and its load by adding the readings of the four weighing sensors 400. In addition, in other embodiments, each weighing sensor 400 can be connected to a controller 500, so that each controller 500 can obtain the weight of the corresponding lifting cabinet 200 at each corner, so as to determine whether the lifting cabinet 200 is tilted, so as to remind the user to make corrections.

[0075] The above description is only a preferred embodiment of the present utility model, so all equivalent changes or modifications made according to the structure, features and principles described in the scope of the present utility model patent application are included in the scope of the present utility model patent application.

Claims

1. A lifting cabinet with anti-collision and anti-pinch features: The lifting cabinet (1000) comprises an outer cabinet (100), a lifting cabinet (200), a lifting mechanism (300), a weighing sensor (400) and a controller (500); a lifting opening (120) communicating with the inner cavity of the outer cabinet (100) is provided on the lower side of the outer cabinet (100); the lifting cabinet (200) is arranged in the outer cabinet (100); the lifting cabinet (200) can pass through the lifting opening (120) and protrude downward from the outer cabinet (100); and the controller (500) is electrically connected to the lifting mechanism (300); The lifting mechanism (300) is connected to a lifting support (600), and the lifting mechanism (300) can drive the lifting support (600) to lift vertically, and the lifting support (600) is arranged in parallel to the lower side or the upper side of the lifting cabinet (200); the weighing sensor (400) comprises a metal sensitive beam (410) and a strain gauge, and the strain gauge is attached to the surface of the metal sensitive beam (410) and is electrically connected to the controller (500); the metal sensitive beam (410) is fixedly connected between the lifting support (600) and the lifting cabinet (200), and the metal sensitive beam (410) can be deformed between the lifting support (600) and the lifting cabinet (200).

2. The anti-collision and anti-pinch lifting cabinet according to claim 1, characterized in that: The metal sensitive beam (410) is a rectangular parallelepiped strip-shaped metal component; a first cushion block (420) is fixedly connected between the first end of the metal sensitive beam (410) and the lifting support (600); the first cushion block (420) supports the metal sensitive beam (410) to leave the lifting support (600) to form a first clearance space (700); a second cushion block (430) is fixedly connected between the second end of the metal sensitive beam (410) and the lifting cabinet (200); the second cushion block (430) supports the metal sensitive beam (410) to leave the lifting cabinet (200) to form a second clearance space (800).

3. The anti-collision and anti-pinch lifting cabinet according to claim 2, characterized in that: The first cushion block (420) and the second cushion block (430) are both detachably arranged from the metal sensitive beam (410); the first cushion block (420) is provided with a first through hole (421); the first end of the metal sensitive beam (410) is provided with a second through hole (411); the lifting support (600) is provided with a third through hole (612); the first through hole (421), the second through hole (411) and the third through hole (612) are aligned with and connected to each other; the second cushion block (430) is provided with a fourth through hole (431); the second end of the metal sensitive beam (410) is provided with a fifth through hole (412); the lifting cabinet (200) is provided with a sixth through hole (210); the fourth through hole (431), the fifth through hole (412) and the sixth through hole (210) are aligned with and connected to each other.

4. The anti-collision and anti-pinch lifting cabinet according to claim 1, characterized in that: The lifting support (600) is arranged above the lifting cabinet (200) and is parallel to the upper side of the lifting cabinet (200), and the weighing sensor (400) is connected between the upper side of the lifting cabinet (200) and the lower side of the lifting support (600).

5. The anti-collision and anti-pinch lifting cabinet according to claim 4, characterized in that: Four weighing sensors (400) are provided, and the four weighing sensors (400) are arranged in one-to-one correspondence at the four corners of the lifting support (600).

6. The anti-collision and anti-pinch lifting cabinet according to claim 4, characterized in that: The lifting mechanism (300) comprises a motor (310), a gear assembly (320), a screw rod (330) and a screw nut (340); the motor (310) and the gear assembly (320) are fixedly installed in the outer cabinet (100); the rotating shaft of the motor (310) is transmission-connected to the gear assembly (320); the output shaft of the gear assembly (320) is connected to the screw rod (330); the screw rod (330) is vertically arranged; the screw nut (340) is matched with the screw rod (330); and the screw nut (340) is fixedly connected to the lifting support (600).

7. The anti-collision and anti-pinch lifting cabinet according to claim 6, characterized in that: The lifting support (600) comprises a horizontal support plate (610) and a vertical connection plate (620) connected vertically, wherein the horizontal support plate (610) extends horizontally in a direction away from the vertical connection plate (620) and is connected above the weighing sensor (400); and the vertical connection plate (620) extends vertically and is fixedly connected to the lead screw nut (340).

8. The anti-collision and anti-pinch lifting cabinet according to claim 7, characterized in that: The lifting mechanism (300) also includes a first guide rail (370) and a second guide rail (380), wherein the first guide rail (370) is fixedly arranged in the outer cabinet (100) parallel to the screw rod (330), and the second guide rail (380) is vertically provided with a guide groove (381), and the first guide rail (370) can be slidably engaged in the guide groove (381), and the second guide rail (380) is fixedly connected to the vertical connecting plate (620).

9. The anti-collision and anti-pinch lifting cabinet according to claim 8, characterized in that: The lifting cabinet (1000) also includes a mounting frame (360), and the mounting frame (360) is fixed to the vertical inner wall of the outer cabinet (100); the motor (310) and the gear assembly (320) are fixed in a mounting box (130), and an external cover (350) is fixedly connected to the bottom of the mounting box (130), and the external cover (350) is sleeved outside the screw rod (330) and fixedly connected to the mounting frame (360); the first guide rail (370) is fixedly connected to the mounting frame (360).

10. The anti-collision and anti-pinch lifting cabinet according to claim 1, characterized in that: A circle of blocking flange (260) is arranged at the bottom of the lifting cabinet (200); the blocking flange (260) is located at the lower side of the outer cabinet (100) and abuts against the edge of the lifting opening (120); and the outer periphery of the blocking flange (260) is covered with a rubber strip (270).

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