Anti-pinch lifting cabinet

Abstract

The utility model discloses an anti-pinch lifting cabinet. The anti-pinch lifting cabinet comprises an outer cabinet, a lifting cabinet body, a lifting mechanism, a driving motor, a controller, a motor detection element and an echelette grating assembly. The outer cabinet is provided with a first bottom plate and a lifting cavity with an opening in the lower end, and the lifting cabinet body is provided with a second bottom plate used for covering the lifting cavity. The infrared grating assembly comprises an infrared emitter located on the first bottom plate and an infrared receiver located on the second bottom plate, the infrared emitter emits a plurality of parallel infrared beams to the infrared receiver to form an infrared grating, when any infrared beam is shielded, the infrared grating assembly generates a shading signal, and when any infrared beam is shielded, the infrared grating assembly transmits the shading signal to the second bottom plate. And the controller controls the driving motor to stop running. The motor detection element is used for detecting the rotating speed of the driving motor, when the rotating speed is lower than a preset value, it is judged that the lifting cabinet clamps an obstacle, and the controller controls the driving motor to stop running or rotate reversely. According to the anti-pinch lifting cabinet, the comprehensive anti-pinch function of the lifting cabinet is achieved.

Description

Technical Field

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

[0002] The cabinets used in modern families are generally wall cabinets fixed on the upper space of the wall, which is conducive to saving space, but the high position often makes it inconvenient to store and access items; the same situation is also the case with wardrobes, wine cabinets, bookcases and other storage cabinets, which often cause various inconveniences because the storage space is too high. Therefore, electric lifting cabinets are becoming more and more popular among the public.

[0003] However, when the electric lifting cabinet is in use, the lifting cabinet body cannot intelligently determine whether there are objects beyond the edge of the lifting cabinet body when it is rising, causing objects to be clamped between the lifting cabinet body and the front edge of the outer cabinet and causing damage. Even when the user takes objects when the lifting cabinet body is rising, their hands can easily be clamped and cause injury. Utility Model Content

[0004] The main purpose of the utility model is to provide an anti-pinch lifting cabinet, aiming to solve the problem that the existing lifting cabinet has no anti-pinch function during the cabinet body rising process.

[0005] In order to achieve the above-mentioned purpose, the utility model proposes an anti-pinch lifting cabinet comprising:

[0006] An outer cabinet, the outer cabinet having a first bottom plate and a lifting chamber with an opening at a lower end;

[0007] A lifting cabinet is arranged in the lifting chamber, and the lifting cabinet comprises a second bottom plate for covering the lifting chamber;

[0008] A lifting mechanism connected to the lifting cabinet;

[0009] A driving motor, the output shaft of which is connected to the lifting mechanism and is used to drive the lifting cabinet to move up and down;

[0010] A controller, electrically connected to the drive motor to control the action of the drive motor;

[0011] A motor detection element, used for detecting the rotation speed of the driving motor and sending a rotation speed detection signal to the controller, wherein the controller receives the rotation speed detection signal and controls the driving motor to stop running or rotate in the reverse direction according to the rotation speed detection signal;

[0012] An infrared grating assembly is electrically connected to the controller, and includes an infrared transmitter located on the first base plate, and an infrared receiver located on the second base plate and arranged opposite to the infrared transmitter. The infrared transmitter transmits multiple parallel infrared light beams to the infrared receiver to form an infrared grating. When any of the infrared light beams is blocked, the infrared grating assembly generates a shading signal and sends it to the controller, and the controller controls the drive motor to stop running.

[0013] Optionally, the lifting cabinet has a accommodating chamber with a front end opening.

[0014] Optionally, the infrared grating component is arranged at the front end of the accommodating chamber.

[0015] Optionally, the infrared grating assembly is activated when the lifting cabinet rises.

[0016] Optionally, the motor detection element is a Hall sensor, and a sensing end of the Hall sensor is arranged opposite to the output shaft.

[0017] Optionally, the anti-pinch lifting cabinet further comprises an alarm component, which is electrically connected to the controller. When the controller receives the shading signal and / or the rotation speed of the driving motor is lower than a preset value, the alarm component sends out an alarm signal.

[0018] Optionally, the alarm component is a buzzer.

[0019] The beneficial effects of the utility model are:

[0020] A motor detection element and an infrared grating assembly are added to the existing electric lifting cabinet. The infrared grating assembly is arranged at the front end opening near the accommodating chamber, and an infrared grating is formed between the first bottom plate and the second bottom plate. When an object exceeds the edge of the accommodating chamber and blocks the infrared light beam during the rising process of the lifting cabinet, the infrared grating assembly will send a shading signal to the controller, and the controller will control the drive motor to stop moving. In order to further enhance the anti-pinch protection function, the present application is also provided with a motor detection element to detect the rotation speed of the drive motor. When the lifting cabinet clamps an object during rising, the running resistance of the drive motor will increase and the rotation speed of the drive motor will decrease. The controller controls the drive motor to stop moving or rotate in the opposite direction according to the received motor speed detection signal, so that the lifting cabinet stops rising or retreats downward by a preset distance. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0022] Figure 1 This is a front view of an embodiment of the anti-pinch lifting cabinet of the utility model;

[0023] Figure 2 This is a three-dimensional structural diagram of an embodiment of the anti-pinch lifting cabinet of the utility model;

[0024] Figure 3 This is a cross-sectional structural diagram of an embodiment of the anti-pinch lifting cabinet of the utility model;

[0025] Figure 4 This is a principle block diagram of an embodiment of the anti-pinch lifting cabinet of the utility model.

[0026] Description of Figure Numbers:

[0027] Label name Label name 100 External cabinet 330 Controller 110 First base plate 400 Motor detection components 200 Lifting cabinet 500 Infrared grating components 210 Second base plate 510 Infrared transmitter 310 Drive motor 520 Infrared Receiver 320 Lifting mechanism 600 Alert Component

[0028] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0031] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0032] The utility model provides an anti-pinch lifting cabinet, aiming to solve the problem that the existing lifting cabinet has no anti-pinch function during the lifting process of the cabinet body.

[0033] To achieve the above purpose, in one embodiment, Figure 1-4 As shown, the anti-pinch lifting cabinet includes:

[0034] An outer cabinet 100, the outer cabinet 100 having a first bottom plate 110 and a lifting chamber with an opening at a lower end, wherein the opening is provided at the first bottom plate 110;

[0035] A lifting cabinet 200 is disposed in the lifting chamber, and the lifting cabinet 200 includes a second bottom plate 210 for covering the lifting chamber;

[0036] A lifting mechanism 320 connected to the lifting cabinet 200;

[0037] A driving motor 310, wherein the output shaft of the driving motor 310 is connected to the lifting mechanism 320, and is used to drive the lifting cabinet 200 to move up and down;

[0038] A controller 330, electrically connected to the drive motor 310 to control the start and stop of the drive motor 310;

[0039] The motor detection element 400 is used to detect the rotation speed of the driving motor 310 and send a rotation speed detection signal to the controller 330. The controller 330 receives the rotation speed detection signal and controls the driving motor 310 to stop running or rotate in the reverse direction according to the rotation speed detection signal.

[0040] The infrared grating assembly 500 is electrically connected to the controller 330, and includes an infrared transmitter 510 located on the first base plate 110, and an infrared receiver 520 located on the second base plate 210 and arranged opposite to the infrared transmitter 510. The infrared transmitter 510 transmits a plurality of parallel infrared light beams to the infrared receiver 520 to form an infrared grating. When any of the infrared light beams is blocked, the infrared grating assembly 500 generates a shading signal and sends it to the controller 330, and the controller 330 controls the drive motor 310 to stop running.

[0041] Specifically, the outer cabinet 100 can form a set of cabinets with the lifting cabinet 200, or the outer cabinet 100 can be a part of an integral cabinet such as a wall-mounted cabinet. The outer cabinet 100 has a lifting chamber with an opening at the bottom for accommodating and lifting the lifting cabinet 200. The outer cabinet 100 can be provided with a transparent front cabinet surface or an opaque front cabinet surface, or an opening and closing cabinet door according to needs.

[0042] The lifting cabinet 200 can be driven by a screw rod, and the lifting mechanism 320 includes structural parts such as guide rails, driving screw rods and screw rod brackets. The lifting cabinet 200 can also be driven by other motors, which is not limited here.

[0043] In order to realize the anti-pinch function of the lifting cabinet 200 when it is rising, first, Figure 1-Figure 3 As shown, an infrared transmitter 510 is arranged on the first bottom plate 110 and a corresponding infrared receiver 520 is arranged on the second bottom plate 210 to form an infrared grating. The infrared grating is located at the front of the lifting cabinet 200. When the lifting cabinet 200 performs an ascending operation, if an object in the lifting cabinet 200 exceeds the edge of the cabinet and blocks the infrared beam, or a user takes an object during the ascending process of the cabinet and blocks the infrared beam with his hand, the controller 330 receives a light shielding signal to control the lifting cabinet 200 to stop moving, thereby realizing anti-pinch prejudgment.

[0044] Secondly, since there are gaps between the beams of the infrared grating, or the clamped object is a transparent object, the infrared grating may fail to make an anti-pinch prediction. Therefore, the present embodiment provides a motor detection element 400 for real-time detection of the motor running resistance. When an obstacle is clamped between the lifting cabinet 200 and the outer cabinet 100, the running resistance of the motor increases, and the controller 330 controls the drive motor 310 to stop moving or rotate in the reverse direction. The motor rotates in the reverse direction to lower the lifting cabinet 200 by a preset distance, making it easier for the user to take the object.

[0045] This embodiment achieves anti-pinch prediction during the rising process of the lifting cabinet 200 by setting an infrared grating on the front side of the lifting cabinet 200. At the same time, a motor detection element 400 is set to cover the situation where the infrared grating fails to achieve anti-pinch prediction, thereby preventing the lifting cabinet from clamping objects during the rising process and causing damage to the objects and the cabinet, and also preventing users from getting hand injuries when taking objects.

[0046] Optionally, the lifting cabinet 200 has a accommodating chamber with a front end opening.

[0047] A shelf can also be arranged in the accommodating chamber as required, and the edge of the shelf does not exceed the edge of the second bottom plate 210 , and also does not exceed the edge of the infrared grating assembly 500 .

[0048] Optionally, the infrared grating assembly 500 is disposed at the front end of the accommodating chamber.

[0049] like Figure 3 As shown, in order for the infrared grating to achieve a better anti-pinch prediction detection effect, the infrared grating assembly 500 can be arranged at the edge of the first bottom plate 110 and the second bottom plate 210 near the front end opening of the accommodating chamber.

[0050] Optionally, the infrared grating assembly 500 is activated when the lifting cabinet rises.

[0051] In order to save energy, the infrared grating assembly 500 is only activated when the lifting cabinet executes the ascending command. When the lifting cabinet 200 completely enters the lifting chamber, the ascending command is considered to be completed, and the infrared grating assembly 500 enters the standby mode. It should be noted that if an obstacle blocks the infrared beam during the ascending process, the lifting cabinet 200 stops moving, but it is still considered that the lifting cabinet is in the process of executing the ascending command, and the infrared grating assembly 500 remains in the open state until the lifting cabinet 200 completely enters the lifting chamber.

[0052] Optionally, the motor detection element 400 is a Hall sensor, and a sensing end of the Hall sensor is arranged opposite to the output shaft.

[0053] Specifically, a radial magnetic ring can be set at the end of the output shaft of the drive motor 310, and a Hall sensor is set next to the radial magnetic ring to sense and output a pulse signal. The frequency and period of the pulse signal can reflect the real-time rotation speed of the drive motor 310. The current resistance value of the drive motor 310 is inversely proportional to the current rotation speed. Therefore, the controller 330 can determine whether the current resistance value is greater than the preset resistance value (the preset resistance value can be set to the maximum resistance value of the drive motor 310 when the lifting cabinet does not clamp an object during the rising process) according to the pulse signal sent by the Hall sensor. When the current resistance value is greater than the preset resistance value, it is manifested as the rotation speed of the drive motor is lower than the preset rotation speed, then it is determined that the lifting cabinet body 200 clamps an object, and the controller 330 controls the motor to stop running or reverse running.

[0054] Of course, the motor detection element 400 is not limited to the Hall sensor, and a torque sensor or a photoelectric speed sensor may also be used.

[0055] It can be understood that when the current resistance value is greater than the preset resistance value, the corresponding working current of the drive motor 310 should be less than the overload current.

[0056] It is understandable that an increase in the resistance value of the drive motor 310 will cause an increase in its operating current. Therefore, the operating current of the drive motor 310 needs to be lower than the overload current value so that the drive motor 310 will not overheat or even be damaged, thereby ensuring the working stability of the lifting cabinet.

[0057] Optionally, the anti-pinch lifting cabinet also includes an alarm component 600, which is electrically connected to the controller 330. When the controller 330 receives the shading signal, and / or the rotation speed of the drive motor 310 is lower than a preset value, the alarm component 600 sends an alarm signal.

[0058] Optionally, the alarm component 600 is a buzzer.

[0059] Specifically, an alarm signal may be sent out through a buzzer to remind the user that an object has exceeded the edge of the accommodating chamber during the lifting process of the lifting cabinet or an object has been clamped between the lifting cabinet body 200 and the outer cabinet 100, thereby ensuring safe use.

[0060] Of course, the alarm method is not limited to the sound of a buzzer. The controller 330 can also control the cabinet lighting to flash to achieve an alarm effect, and an alarm signal can also be issued through a human-computer interaction device (such as a display panel, a voice device).

[0061] In summary, the utility model realizes the anti-pinch function of the lifting cabinet when it is rising. By setting an infrared grating on the front of the lifting cabinet, when an obstruction blocks the infrared light beam, a shading signal is sent to the controller, and then the lifting cabinet is controlled to stop moving, thereby realizing anti-pinch prediction. At the same time, a motor detection element is set to detect the change in the running resistance of the driving motor to determine whether an object is clamped between the lifting cabinet and the outer cabinet. When an object is clamped, the controller controls the lifting cabinet to stop rising or descending a preset distance, thereby avoiding damage to the objects and the cabinet due to clamping of the objects, and also avoiding hand injuries when the user takes the object.

[0062] The above description is only a preferred embodiment of the utility model, and does not limit the patent scope of the utility model. All equivalent structures or equivalent process changes made by using the contents of the utility model specification and drawings under the utility model concept, or directly or indirectly used in other related technical fields are included in the patent protection scope of the utility model.

Claims

1. An anti-pinch lifting cabinet, characterized in that: The anti-pinch lifting cabinet comprises: An outer cabinet, the outer cabinet having a first bottom plate and a lifting chamber with an opening at a lower end; A lifting cabinet is arranged in the lifting chamber, and the lifting cabinet comprises a second bottom plate for covering the lifting chamber; A lifting mechanism connected to the lifting cabinet; A driving motor, the output shaft of which is connected to the lifting mechanism and is used to drive the lifting cabinet to move up and down; A controller, electrically connected to the drive motor to control the action of the drive motor; A motor detection element, used for detecting the rotation speed of the driving motor and sending a rotation speed detection signal to the controller, wherein the controller receives the rotation speed detection signal and controls the driving motor to stop running or rotate in the reverse direction according to the rotation speed detection signal; An infrared grating assembly is electrically connected to the controller, and includes an infrared transmitter located on the first base plate, and an infrared receiver located on the second base plate and arranged opposite to the infrared transmitter. The infrared transmitter transmits multiple parallel infrared light beams to the infrared receiver to form an infrared grating. When any of the infrared light beams is blocked, the infrared grating assembly generates a shading signal and sends it to the controller, and the controller controls the drive motor to stop running.

2. The anti-pinch lifting cabinet according to claim 1, characterized in that: The lifting cabinet has a accommodating chamber with a front end opening.

3. The anti-pinch lifting cabinet according to claim 2, characterized in that: The infrared grating component is arranged at the front end of the accommodating chamber.

4. The anti-pinch lifting cabinet according to any one of claims 1 to 3, characterized in that: The infrared grating component is activated when the lifting cabinet rises.

5. The anti-pinch lifting cabinet according to claim 1, characterized in that: The motor detection element is a Hall sensor, and the sensing end of the Hall sensor is arranged opposite to the output shaft.

6. The anti-pinch lifting cabinet according to claim 1, characterized in that: The anti-pinch lifting cabinet also includes an alarm component, which is electrically connected to the controller. When the controller receives the shading signal and / or the rotation speed of the drive motor is lower than a preset value, the alarm component sends an alarm signal.

7. The anti-pinch lifting cabinet according to claim 6, characterized in that: The alarm component is a buzzer.

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