Anti-pinch lifting cabinet

Abstract

The utility model discloses an anti-pinch lifting cabinet, which relates to the field of cabinets, and comprises a fixed cabinet body, a movable cabinet body and a lifting mechanism, the fixed cabinet body is provided with an accommodating cabinet cavity, the upper part of the accommodating cabinet cavity is communicated with a lifting opening, and the movable cabinet body is arranged in the accommodating cabinet cavity; the anti-pinch lifting cabinet further comprises a weighing sensor and a controller, the lifting mechanism is connected with a supporting base, 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. The first end of the metal sensitive beam is fixed on the supporting seat, and the second end of the metal sensitive beam is fixed on the movable cabinet body; a first abdicating space is formed between the metal sensitive beam and the supporting seat, and a second abdicating space is formed between the metal sensitive beam and the movable cabinet body; and the controller is electrically connected to the lifting mechanism. The lifting cabinet has the advantages that the arrangement position of the pressure sensor is not limited, the structure is simple, and obstacles in all directions of the lifting cabinet can be detected.

Description

Technical Field

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

[0002] Lifting cabinets are commonly used storage furniture in home life, which can make full use of home space and improve storage functions. Lifting cabinets usually include a fixed cabinet body and a movable cabinet body that can be lifted and set on the fixed cabinet body. The movable cabinet body can be lifted and protruded from the fixed cabinet body to store items. After the items are stored and retrieved, the movable cabinet body can be lifted and stored in the fixed cabinet body.

[0003] When the lifting cabinet is in use, there is a risk of the moving cabinet body pinching the user, so it is necessary to add an anti-pinch function to the lifting cabinet. The Chinese utility model patent with publication number CN220777855U discloses an anti-collision and anti-pinch panel device and a lifting cabinet having the same, which has an anti-collision and anti-pinch panel fixedly connected to the bottom of the lifting cabinet, and an installation cavity is set in the anti-collision and anti-pinch panel. The sensor is installed in the installation cavity of the anti-collision and anti-pinch panel through a mounting column. When the lower side of the anti-collision and anti-pinch panel contacts a human hand, the pressure sensor detects the pressure value, so that the controller controls the lifting cabinet to stop descending to avoid pinching the human hand.

[0004] In the above-mentioned lifting cabinet, the pressure sensor has limited pressure-bearing capacity and cannot directly bear the lifting cabinet, but needs to bear the load through the anti-collision and anti-pinch panel to avoid damage to the pressure sensor due to excessive load, and its structure is relatively complicated; the above-mentioned pressure sensor cannot withstand tensile force and can only be set at the bottom of the lifting cabinet, and the setting position is limited; and the above-mentioned pressure sensor can only detect obstacles below the lifting cabinet, and cannot detect obstacles above the lifting cabinet. Summary of the invention

[0005] In order to solve the shortcomings of the lifting cabinet in the prior art, such as limited installation position of the pressure sensor, complex structure and inability to detect obstacles above the lifting cabinet, the utility model provides an 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-pinch lifting cabinet, comprising a fixed cabinet, a movable cabinet and a lifting mechanism, wherein the fixed cabinet has a accommodating cabinet cavity, the upper part of the accommodating cabinet cavity is connected with a lifting opening, the movable cabinet is arranged in the accommodating cabinet cavity, and the lifting mechanism is used to drive the movable cabinet to lift vertically;

[0008] It is characterized in that the anti-pinch lifting cabinet also includes a weighing sensor and a controller, the lifting mechanism is connected to a support seat, and the support seat can be lifted and lowered vertically under the drive of the lifting mechanism; 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 first end of the metal sensitive beam is fixed to the support seat, and the second end of the metal sensitive beam is fixed to the movable cabinet; a first clearance space is formed between the metal sensitive beam and the support seat, and a second clearance space is formed between the metal sensitive beam and the movable cabinet; the controller is electrically connected to the lifting mechanism, and when the strain gauge reading changes, the controller controls the lifting mechanism to stop lifting or controls the lifting mechanism to which it belongs to move in the opposite direction.

[0009] Furthermore, a first cushion block is fixedly connected between the first end of the metal sensitive beam and the support seat, and a second cushion block is fixedly connected between the second end of the metal sensitive beam and the movable cabinet.

[0010] Furthermore, a flange is formed on the outer periphery of the second cushion block, and the flange is fitted to the movable cabinet, and a plurality of connection holes are formed on the flange.

[0011] Furthermore, the first pad and the metal sensitive beam can be separated and arranged, 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 support seat is provided with a third through hole, and the first through hole, the second through hole and the third through hole are aligned with each other and connected.

[0012] Furthermore, the support seat is arranged below the movable cabinet and is parallel to the lower side of the movable cabinet, and the weighing sensor is connected between the lower side of the movable cabinet and the upper side of the support seat.

[0013] Furthermore, four weighing sensors are provided, and the four weighing sensors are arranged at four corners of the support base in a one-to-one correspondence.

[0014] Furthermore, a guide column is provided on one of the support seat and the movable cabinet, and a guide hole is provided on the other of the support seat and the movable cabinet. The guide column passes through the guide hole and can slide up and down relative to the guide hole.

[0015] 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 fixed 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 in the fixed cabinet, the screw nut is matched with the screw, and the screw nut is fixedly connected to the support seat.

[0016] Furthermore, the support seat includes a horizontal support plate and a vertical connecting plate, and the horizontal support plate is vertically connected to the vertical connecting plate; the weighing sensor is arranged on the horizontal support plate, and the lead screw nut is fixedly connected to the vertical connecting plate.

[0017] Furthermore, the lifting mechanism also includes a guide rail and a guide slider, the guide rail is arranged in the fixed cabinet parallel to the screw rod, the guide slider can be slidably matched with the guide rail, and the guide slider is fixedly connected to the support seat.

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

[0019] In the utility model, the mobile cabinet of the anti-pinch lifting cabinet is lifted and lowered along the fixed cabinet under the driving of the lifting mechanism, so as to enter and exit the fixed cabinet from the lifting opening, so that the user can use the storage space in the mobile cabinet. The lifting mechanism is connected to the mobile cabinet through a support seat, and the support seat and the mobile cabinet are connected through a weighing sensor; wherein the weighing sensor includes a metal sensitive beam and a strain gauge, and the metal sensitive beam has a large strength and can be directly connected to the support seat and the mobile cabinet, so that the stress between the mobile cabinet and the lifting mechanism can be directly transmitted to the metal sensitive beam. A first clearance space is formed between the metal sensitive beam and the support seat, and a second clearance space is formed between the metal sensitive beam and the mobile cabinet, so that the metal sensitive beam is deformed between the mobile cabinet and the support seat under the action of an external force, driving the strain gauge to deform to obtain the stress change on the mobile cabinet and transmit the information to the controller. Therefore, when the lifting cabinet is in normal use, the value obtained by the weighing sensor is stable, and at this time, the weight of the mobile cabinet can also be known according to the value detected by the weighing sensor, so as to prevent the mobile cabinet from damaging the lifting cabinet by excessive load. During the lifting process of the mobile cabinet, if the user's fingers or other obstacles touch the mobile cabinet and hinder the lifting of the mobile cabinet, the value detected by the weighing sensor changes. 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 preventing the anti-pinch lifting cabinet from colliding with or squeezing obstacles and being damaged.

[0020] In this solution, the anti-pinch lifting cabinet not only prevents pinching when the bottom of the mobile cabinet touches the hand or obstacle, but also detects pressure changes when the support seat touches the hand or obstacle, thereby controlling the operation of the lifting mechanism to prevent pinching and collision. In addition, when there are human hands or other obstacles above or on the side of the mobile cabinet that hinder the lifting of the mobile cabinet, the weighing sensor can also detect pressure changes, thereby achieving anti-collision and anti-pinch. As a result, the weighing sensor in the utility model can directly bear the load of the mobile cabinet, without the need to set up an additional structure to protect the weighing sensor, simplifying the installation structure of the weighing sensor and saving costs; the weighing sensor is connected to the support seat and the mobile cabinet through a metal sensitive beam, which can withstand both tension and pressure, so that the sensor can be connected to the bottom, top or side of the mobile cabinet, reducing the restrictions on the installation of the weighing sensor, and at the same time, the anti-pinch lifting cabinet can prevent collision and pinching when there are obstacles below the mobile cabinet, and can also achieve anti-collision and anti-pinch when there are obstacles in other directions of the mobile cabinet, further improving the safety of the anti-pinch lifting cabinet when in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional structural schematic diagram of an anti-pinch lifting cabinet according to an embodiment of the utility model.

[0022] Figure 2 It is a three-dimensional structural schematic diagram of an anti-pinch lifting cabinet when a movable cabinet body is removed according to an embodiment of the utility model.

[0023] Figure 3 It is a three-dimensional structural schematic diagram of a lifting mechanism and a supporting seat according to an embodiment of the utility model.

[0024] Figure 4 It is a schematic diagram of the vertical cross-sectional structure of an anti-pinch lifting cabinet passing through the axis of the screw rod according to an embodiment of the present practical information.

[0025] Figure 5 It is a front view schematic diagram of a weighing sensor according to an embodiment of the utility model.

[0026] Figure 6 yes Figure 3 Enlarged structural diagram at A in the middle.

[0027] Figure 7 It is a schematic diagram of the vertical cross-sectional structure of a weighing sensor according to an embodiment of the utility model.

[0028] Figure 8 It is a vertical cross-sectional structural diagram of a controller according to an embodiment of the utility model.

[0029] In the figure:

[0030] 1000, anti-pinch lifting cabinet; 100, fixed cabinet; 110, cabinet cavity; 120, lifting opening; 130, decorative panel; 200, movable cabinet; 210, guide hole; 220, back panel; 230, side panel; 240, top panel; 250, bottom panel; 300, lifting mechanism; 310, motor; 320, gear assembly; 330, lead screw; 340, lead screw nut; 350, external cover; 351, avoidance groove; 360, mounting frame; 370, guide rail; 380, guide slider; 4 00, weighing sensor; 410, metal sensitive beam; 411, second through hole; 420, first pad; 421, first through hole; 430, second pad; 431, flange; 432, connecting hole; 500, controller; 510, control housing; 520, circuit board; 600, support seat; 610, horizontal support plate; 611, wiring hole; 612, third through hole; 620, vertical connecting plate; 630, diagonal support plate; 650, guide column; 700, first clearance space; 800, second clearance space. DETAILED DESCRIPTION

[0031] The utility model is further described below in conjunction with the accompanying drawings.

[0032] This embodiment discloses an anti-pinch lifting cabinet 1000, referring to Figure 1 , an anti-pinch lifting cabinet 1000, comprising a fixed cabinet 100, a mobile cabinet 200, a lifting mechanism 300, a weighing sensor 400 and a controller 500. The mobile cabinet 200 is connected to the lifting mechanism 300 through a support seat 600, and the lifting mechanism 300 is used to drive the mobile cabinet 200 to lift vertically so that the mobile cabinet 200 is exposed or stored in the fixed cabinet 100. The weighing sensor 400 is connected between the support seat 600 and the mobile 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.

[0033] Reference Figure 1 and Figure 2 The fixed cabinet 100 has a storage cabinet cavity 110, and the storage cabinet cavity 110 passes through the upper part of the fixed cabinet 100 to form a lifting opening 120, and the lifting opening 120 is connected to the storage cabinet cavity 110. The mobile cabinet 200 is arranged in the storage cabinet cavity 110, and can enter and exit the fixed cabinet 100 through the lifting opening 120, so that the user can use the storage space in the mobile cabinet 200.

[0034] In this embodiment, the fixed cabinet 100 is a square cabinet, and the accommodating cabinet cavity 110 is a rectangular cavity. In addition, in other embodiments, the fixed cabinet 100 can also be a cabinet of other shapes.

[0035] The fixed cabinet 100 is provided with a circle of decorative panels 130 at the lifting opening 120 to enhance the aesthetic appearance of the fixed cabinet 100 .

[0036] Reference Figures 2 to 4 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 mounted on the inner wall of the fixed 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 fixed cabinet 100, and the lead screw nut 340 is matched with the lead screw 330. The lead screw nut 340 is fixedly connected to the support seat 600, and the support seat 600 is fixedly connected to the mobile cabinet 200, so as to realize the connection between the lead screw nut 340 and the mobile cabinet 200.

[0037] In this embodiment, the motor 310 is arranged horizontally, and the rotation output by the motor 310 is output to the screw rod 330 after being decelerated and turned by the gear assembly 320, 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, so that the rotation of the screw rod 330 can drive the movable cabinet 200 to rise and fall.

[0038] 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 mobile cabinet 200 to start or stop lifting, and control the mobile cabinet 200 to rise or fall.

[0039] In this embodiment, the outer cover 350 is disposed on the outer sleeve of the screw rod 330, and 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, thereby enhancing the IP protection capability of the screw rod 330.

[0040] The outer cover 350 is provided with a avoiding groove 351 , which extends along the length direction of the lead screw 330 , and the lead screw nut 340 extends out of the avoiding groove 351 so as to be connected to the movable cabinet 200 .

[0041] In this embodiment, the lifting mechanism 300 further includes a mounting frame 360, which is fixedly connected to the vertical inner wall of the fixed cabinet 100. The outer sleeve of the screw rod 330 is fixed to the mounting frame 360, so as to realize the connection between the screw rod 330 and the fixed cabinet 100.

[0042] Two guide rails 370 are fixed on the mounting frame 360. The two guide rails 370 are arranged parallel to the screw rod 330, and the two guide rails 370 are respectively arranged outside the two sides of the screw rod 330. Each guide rail 370 is slidably matched with a guide slider 380, and the guide slider 380 is fixedly connected to the support seat 600. Therefore, when the support seat 600 is driven to rise and fall vertically by the screw rod 330 and the screw nut 340, the cooperation between the guide slider 380 and the guide rail 370 guides the support seat 600, so that the support seat 600 is more stable when moving.

[0043] In this embodiment, the support base 600 is disposed below the mobile cabinet 200 and is parallel to the lower side of the mobile cabinet 200, and the weighing sensor 400 is disposed above the support base 600 and connected to the mobile cabinet 200. As a result, the support base 600 can better bear the load of the mobile cabinet 200 in the vertical direction. In addition, in other embodiments, the support base 600 can also be disposed on the side of the mobile cabinet 200 or disposed above the mobile cabinet 200 and connected to the mobile cabinet 200.

[0044] The support base 600 includes a horizontal support plate 610 and a vertical connection plate 620, the horizontal support plate 610 is vertically connected to the vertical connection plate 620, the lead screw nut 340 is fixedly connected to the vertical connection plate 620, and the guide slider 380 is fixedly connected to the vertical connection plate 620. The horizontal support plate 610 extends in a direction away from the lead screw nut 340. The horizontal support plate 610 and the vertical connection plate 620 connected in an L shape facilitate connection with the mobile cabinet 200 and the lead screw nut 340.

[0045] 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 .

[0046] A triangular diagonal support plate 630 is provided between the horizontal support plate 610 and the vertical connection plate 620. One diagonal support plate 630 is provided at each end of the horizontal support plate 610 to enhance the structural strength of the support base 600 and prevent the horizontal support plate 610 from deforming.

[0047] Reference Figures 2 to 6 The weighing sensor 400 is disposed above the horizontal support plate 610 and bears the weight of the movable cabinet 200 in the vertical direction, so that the weighing sensor 400 can measure the compressive stress of the movable cabinet 200 more accurately.

[0048] The weighing sensor 400 includes a metal sensitive beam 410 and a strain gauge, wherein the strain gauge is attached to the surface of the metal sensitive beam 410 and electrically connected to the controller 500. The first end of the metal sensitive beam 410 is fixed to the horizontal support plate 610, and the second end of the metal sensitive beam 410 is fixed to the mobile cabinet 200. The metal sensitive beam 410 is relatively strong and can be directly connected to the support seat 600 and the mobile cabinet 200 and bear the weight of the mobile cabinet 200, so that the stress between the mobile cabinet 200 and the lifting mechanism 300 can be directly transmitted to the metal sensitive beam 410.

[0049] A first clearance space 700 is formed between the metal sensitive beam 410 and the support seat 600, and a second clearance space 800 is formed between the metal sensitive beam 410 and the mobile cabinet 200. The first clearance space 700 is set to reserve a space for the metal sensitive beam 410 to deform toward the support seat 600, and the second clearance space 800 is set to reserve a space for the metal sensitive beam 410 to deform toward the mobile cabinet 200. Thus, the metal sensitive beam 410 is deformed between the mobile cabinet 200 and the support seat 600 under the action of external force, driving the strain gauge to deform, obtaining the stress change on the mobile cabinet 200 and transmitting the information to the controller 500.

[0050] When the lifting cabinet is in normal use, the value obtained by the weighing sensor 400 is stable. At this time, the weight of the mobile cabinet 200 can be known based on the value detected by the weighing sensor 400 to prevent the mobile cabinet 200 from being damaged by excessive loads. During the lifting process of the mobile cabinet 200, if the user's finger or other obstacles touch the mobile cabinet 200 and hinder the lifting of the mobile cabinet 200, the value detected by the weighing sensor 400 changes. 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 prevent the anti-pinch lifting cabinet 1000 from colliding with or squeezing obstacles and being damaged.

[0051] The weighing sensor 400 is connected to the support base 600 and the mobile cabinet 200 through a metal sensitive beam 410, which can withstand both tension and pressure, so that the sensor can be connected below, above or to the side of the mobile cabinet 200, reducing the restrictions on the installation of the weighing sensor 400.

[0052] In this embodiment, the weighing sensor 400 is arranged on the horizontal support plate 610 at the lower side of the mobile cabinet 200, and the weighing sensor 400 vertically supports the mobile cabinet 200. When the bottom, top or other parts of the mobile cabinet 200 touch the hand or obstacles, or the support base 600 touches the hand or obstacles, the weighing sensor 400 can detect the pressure change, thereby controlling the lifting mechanism 300 to stop lifting or move in the opposite direction to prevent the hand from being pinched or the lifting cabinet from being hit, thereby improving the safety of the anti-pinch lifting cabinet 1000 when in use.

[0053] A first cushion block 420 is fixedly connected between the first end of the metal sensitive beam 410 and the support seat 600, and a second cushion block 430 is fixedly connected between the second end of the metal sensitive beam 410 and the movable 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 movable cabinet 200, thereby forming a second clearance space 800.

[0054] Reference Figures 5 to 7 In this embodiment, the first pad 420 and the second pad 430 are both detachably arranged with 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. Specifically, a first through hole 421 is provided on the first pad 420, a second through hole 411 is provided on the first end of the metal sensitive beam 410, and a third through hole 612 is provided 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 connected. 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 pad 420 and the horizontal support plate 610.

[0055] In this embodiment, the second cushion block 430 is connected to the second end of the metal sensitive beam 410 by bolts. The outer periphery of the second cushion block 430 is convexly provided with a circle of flange 431, which is attached to the movable cabinet 200, and a plurality of connection holes 432 are provided on the flange 431. The flange 431 is fixed to the lower side of the movable cabinet 200 by bolts passing through the connection holes 432.

[0056] 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 .

[0057] Reference Figure 2 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 upper side of the horizontal support plate 610. Thus, the four weighing sensors 400 stably and evenly support the mobile cabinet 200, improve the stability of the 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.

[0058] Reference Figure 2 and Figure 4In this embodiment, a guide column 650 is fixedly connected to the horizontal support plate 610 by bolts, and the guide column 650 protrudes upward in a direction away from the horizontal support plate 610. A guide hole 210 is provided at the bottom of the mobile cabinet 200, and the guide column 650 is penetrated by the guide hole 210. The guide column 650 fits with the guide hole 210, and the guide column 650 can slide up and down relative to the guide hole 210. When an external force acts on the mobile cabinet 200, the force on the mobile cabinet 200 acts on the weighing sensor 400, and the weighing sensor 400 is deformed, so that the mobile cabinet 200 is vertically displaced relative to the support seat 600. The cooperation between the guide column 650 and the guide hole 210 makes the movement of the mobile cabinet 200 relative to the horizontal support plate 610 more stable.

[0059] In addition, in other embodiments, guide holes 210 may also be provided on the horizontal support plate 610 , and guide posts 650 may be fixedly connected to the bottom of the movable cabinet 200 .

[0060] Reference Figure 1 In this embodiment, the mobile cabinet 200 is a cabinet with an opening at the front and closed on all sides. The mobile 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 at the bottom of the back panel 220 and connected to the weighing sensor 400.

[0061] In addition, in other embodiments, the mobile cabinet 200 may also be a cabinet of other forms.

[0062] Reference Figure 8 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 fixed cabinet 100.

[0063] The circuit board 520 is electrically connected to the induction sheet 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 .

[0064] Preferably, a control button is provided on the outer side of the fixed cabinet 100 or the upper side of the movable 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 by the control button.

[0065] Preferably, the anti-pinch lifting cabinet 1000 further includes a battery, which is fixed in the fixed cabinet body 100 and electrically connected to the motor 310. The battery is used to power the motor 310, so that the anti-pinch lifting cabinet 1000 can be arranged in a place without an external power supply, thereby improving its applicability.

[0066] Preferably, the anti-pinch lifting cabinet 1000 also includes a voice broadcast module, which is electrically connected to the controller 500. The voice broadcast module can make voice broadcasts when the movable cabinet 200 starts to move, stops moving, moves up, moves down, and touches an obstacle, so as to remind the user to pay attention to the status of the anti-pinch lifting cabinet 1000.

[0067] 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 mobile cabinet 200 and its load by adding the readings of the four weighing sensors 400. In addition, in other embodiments, each weighing sensor 400 may be connected to a controller 500, so that each controller 500 can obtain the weight of the corresponding mobile cabinet 200 at each corner, so as to determine whether the mobile cabinet 200 is tilted, so as to remind the user to make corrections.

[0068] 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. An anti-pinch lifting cabinet, comprising a fixed cabinet (100), a movable cabinet (200) and a lifting mechanism (300), wherein the fixed cabinet (100) has a accommodating cabinet cavity (110), the upper portion of the accommodating cabinet cavity (110) is connected to a lifting opening (120), the movable cabinet (200) is arranged in the accommodating cabinet cavity (110), and the lifting mechanism (300) is used for driving the movable cabinet (200) to vertically lift; It is characterized in that The anti-pinch lifting cabinet (1000) further comprises a weighing sensor (400) and a controller (500); the lifting mechanism (300) is connected to a support seat (600), and the support seat (600) can be lifted vertically under the drive of the lifting mechanism (300); 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 first end of the metal sensitive beam (410) is fixed to the support seat (600), and the metal The second end of the metal sensitive beam (410) is fixed to the movable cabinet (200); a first clearance space (700) is formed between the metal sensitive beam (410) and the support seat (600), and a second clearance space (800) is formed between the metal sensitive beam (410) and the movable cabinet (200); the controller (500) is electrically connected to the lifting mechanism (300), and the controller (500) controls the lifting mechanism (300) to stop lifting or controls the lifting mechanism (300) to move in the reverse direction when the reading value of the strain gauge changes.

2. The anti-pinch lifting cabinet according to claim 1, characterized in that: A first cushion block (420) is fixedly connected between the first end of the metal sensitive beam (410) and the support seat (600), and a second cushion block (430) is fixedly connected between the second end of the metal sensitive beam (410) and the movable cabinet (200).

3. The anti-pinch lifting cabinet according to claim 2, characterized in that: The outer periphery of the second cushion block (430) is convexly provided to form a circle of flange (431), the flange (431) is fitted to the movable cabinet (200), and a plurality of connection holes (432) are provided on the flange (431).

4. The anti-pinch lifting cabinet according to claim 2, characterized in that: The first cushion block (420) and the metal sensitive beam (410) are detachably arranged, a first through hole (421) is provided on the first cushion block (420), a second through hole (411) is provided on the first end of the metal sensitive beam (410), and a third through hole (612) is provided on the support seat (600), and the first through hole (421), the second through hole (411) and the third through hole (612) are aligned with each other and are connected.

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

6. The anti-pinch lifting cabinet according to claim 3, characterized in that: Four weighing sensors (400) are provided, and the four weighing sensors (400) are arranged at the four corners of the support seat (600) in a one-to-one correspondence.

7. The anti-pinch lifting cabinet according to claim 3, characterized in that: A guide column (650) is provided on one of the support seat (600) and the movable cabinet (200), and a guide hole (210) is provided on the other of the support seat (600) and the movable cabinet (200), and the guide column (650) is inserted into the guide hole (210) and can slide up and down relative to the guide hole (210).

8. The anti-pinch lifting cabinet according to claim 1, 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 fixed 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 in the fixed cabinet (100); the screw nut (340) is matched with the screw rod (330); and the screw nut (340) is fixedly connected to the support seat (600).

9. The anti-pinch lifting cabinet according to claim 8, characterized in that: The support seat (600) comprises a horizontal support plate (610) and a vertical connecting plate (620), wherein the horizontal support plate (610) is vertically connected to the vertical connecting plate (620); the weighing sensor (400) is arranged on the horizontal support plate (610), and the lead screw nut (340) is fixedly connected to the vertical connecting plate (620).

10. The anti-pinch lifting cabinet according to claim 8, characterized in that: The lifting mechanism (300) further comprises a guide rail (370) and a guide slider (380); the guide rail (370) is arranged in parallel with the screw rod (330) in the fixed cabinet (100); the guide slider (380) is slidably engaged with the guide rail (370); and the guide slider (380) is fixedly connected to the support seat (600).

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