Anti-pinch device of fresh-keeping cabinet

Abstract

The utility model discloses an anti-pinch device of a fresh-keeping cabinet, which comprises a fresh-keeping cabinet main body, a sliding rail is fixedly connected on the fresh-keeping cabinet main body, a sliding block is connected in the sliding rail in a sliding way, a sliding door is fixedly connected on the sliding block, a lifting block is arranged in the sliding rail in a penetrating way, a second spring is arranged between the lifting block and the sliding rail, and the sliding door is fixedly connected on the sliding block. According to the fresh-keeping cabinet, when the distance between the sliding door and the edge of the fresh-keeping cabinet is too close, and the speed is high, the control assembly can start the driving part to work, the sliding door is driven by the driving part to move, and the sliding door is driven by the driving part to move to the fresh-keeping cabinet. The driving piece drives the moving frame to drive the abutting wheel to move, the abutting wheel abuts against the lifting block so that the buffering assembly can be lifted, then the sliding block at the bottom of the sliding door can collide with the buffering assembly, and therefore the sliding door is prevented from pinching fingers of other people.

Description

Technical Field

[0001] The utility model relates to the technical field of fresh-keeping cabinets, in particular to an anti-pinching device for fresh-keeping cabinets. Background Art

[0002] The function of a fresh-keeping cabinet is to slow down the activity of bacteria inside the food by lowering the temperature, thereby extending the shelf life. In businesses, fresh-keeping cabinets are often used to preserve food.

[0003] In the prior art, most of the fresh-keeping cabinets used by merchants are vertical cabinets with sliding doors installed on the outside of the cabinets. The inside of the cabinets can maintain a low temperature, thereby preserving food.

[0004] However, in actual use, there are the following defects: when multiple customers operate the sliding door on the fresh-keeping cabinet to select food, there is a possibility that the sliding door is operated with force, which may pinch the fingers or arms of other customers who are selecting food, thereby posing a corresponding safety hazard. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides an anti-pinch device for a fresh-keeping cabinet.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an anti-pinch device for a fresh-keeping cabinet, comprising a fresh-keeping cabinet main body, a slide rail fixedly connected to the fresh-keeping cabinet main body, a slider slidably connected in the slide rail, a sliding door fixedly connected to the slider, a lifting block running through the slide rail, a second spring provided between the lifting block and the slide rail, a buffer assembly on the lifting block, a moving frame provided at the bottom of the slide rail, a resistance wheel rotatably connected to one end of the moving frame, the bottom of the lifting block set as an inclined surface, a driving member for driving the moving frame to work is also provided at the bottom of the slide rail, and a control assembly is also provided on the outside of the fresh-keeping cabinet main body.

[0007] By adopting the above technical solution, when the distance between the sliding door and the edge of the fresh-keeping cabinet is too close and the speed is fast, the control component will start the driving part to drive the moving frame to drive the resistance wheel to move, and the resistance wheel will resist the lifting block to lift the buffer component, and then the slider at the bottom of the sliding door will hit the buffer component, thereby preventing the sliding door from pinching other people's fingers.

[0008] The utility model is further configured as follows: a connecting plate is fixedly connected to the outside of the lifting block, the second spring is fixedly connected to the convex plate, and the top end of the second spring is fixedly connected to the bottom end of the slide rail.

[0009] By adopting the above technical solution, the lifting block can be installed at the bottom of the slide rail.

[0010] The utility model is further configured such that magnets are fixedly connected to the top of the connecting plate and the bottom of the slide rail, and the two magnets are configured such that the same poles repel each other.

[0011] By adopting the above technical solution, the lifting block can be reset and retracted when the interference wheel no longer interferes with the lifting block.

[0012] The utility model is further configured such that a slide groove is also provided on the top of the lifting block, and the buffer assembly comprises a slide plate slidably connected in the slide groove, a third spring connected between the slide plate and the slide groove, and a buffer plate fixedly connected to the slide block.

[0013] By adopting the above technical solution, the sliding door will come into contact with the buffer plate, and the buffer plate will compress and buffer the third spring, thereby preventing the sliding door from directly hitting and pinching other customers' fingers.

[0014] The utility model is further configured such that the driving member includes a threaded rod rotatably connected to the bottom of the slide rail and a motor arranged at the bottom of the slide rail, the driving shaft of the motor is fixedly connected to the threaded rod, a convex plate is fixedly connected to the movable frame, and the convex plate is threadedly connected to the threaded rod.

[0015] By adopting the above technical solution, the motor drives the threaded rod to rotate, so that the moving frame contacts the lifting block through the contact wheel, and the lifting block drives the buffer plate to rise, thereby contacting and blocking the sliding door.

[0016] The utility model is further configured as follows: a fixing plate is fixedly connected to the bottom of the slide rail, the threaded rod is rotatably connected to the fixing plate, a guide rod is also fixedly connected to the outside of the fixing plate, and the guide rod penetrates and is slidably connected to the convex plate.

[0017] By adopting the above technical solution, the rotation installation of the threaded rod is achieved.

[0018] The utility model is further configured such that the control component is a controller fixedly connected to the outside of the safe and a distance sensor fixedly connected to the slide rail, and the motor and the distance sensor are both electrically coupled to the controller.

[0019] By adopting the above technical solution, if the controller detects that the speed of the moving frame is greater than the set value, the controller starts the motor, and the motor drives the threaded rod to rotate, so that the moving frame contacts the lifting block through the contact wheel.

[0020] The beneficial effect of the utility model is as follows: compared with the prior art, in the utility model, when the distance between the sliding door and the edge of the fresh-keeping cabinet is too close and the speed is fast, the control component will start the driving part to drive the moving frame to drive the resistance wheel to move, and the lifting block is resisted by the resistance wheel to lift the buffer component, and then the slider at the bottom of the sliding door will hit the buffer component, thereby preventing the sliding door from pinching other people's fingers. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0022] Figure 2 It is a structural schematic diagram of the sliding door in the utility model;

[0023] Figure 3 This is a schematic diagram of the slide rail structure in the utility model;

[0024] Figure 4 It is a structural schematic diagram of the mobile frame and the lifting block in the utility model;

[0025] Figure 5 It is a schematic diagram of the cross-sectional structure of the lifting block in the utility model.

[0026] In the figure: 1. Fresh-keeping cabinet body; 2. Controller; 3. Sliding door; 4. Slide rail; 5. Sliding block; 6. Distance sensor; 7. Moving frame; 8. Buffer plate; 9. Convex plate; 10. Fixed plate; 11. Guide rod; 12. Threaded rod; 13. Motor; 14. First spring; 15. Resistance wheel; 16. Lifting block; 17. Inclined surface; 18. Connecting plate; 19. Second spring; 20. Magnet; 21. Slide groove; 22. Slide plate; 23. Third spring. DETAILED DESCRIPTION

[0027] 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 in 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.

[0028] Example: As shown in the attached Figures 1 to 5The anti-pinch device of the fresh-keeping cabinet shown in the figure comprises a fresh-keeping cabinet body 1, a slide rail 4 is fixedly connected to the fresh-keeping cabinet body 1, a slider 5 is slidably connected to the slide rail 4, a sliding door 3 is fixedly connected to the slider 5, a lifting block 16 is penetrated in the slide rail 4, through holes are arranged at both ends of the slide rail 4, so that the lifting block 16 can realize lifting operation in the through holes, and a second spring 19 is arranged between the lifting block 16 and the slide rail 4, specifically, a connecting plate 18 is fixedly connected to the outside of the lifting block 16, the second spring 19 is fixedly connected to the convex plate 9, the top of the second spring 19 is fixedly connected to the bottom of the slide rail 4, and the second spring 19 It plays a resetting role. When the friction wheel 15 no longer conflicts with the lifting block 16, the lifting block 16 can fall. In order to increase the resetting effect, magnets 20 are fixedly connected to the top of the connecting plate 18 and the bottom of the slide rail 4. The two magnets 20 are arranged with the same poles repelling each other. Through the repulsive force, the lifting block 16 can be lowered. In order to avoid pinching hands, a buffer component is also provided on the lifting block 16. A moving frame 7 is provided at the bottom of the slide rail 4. One end of the moving frame 7 is rotatably connected to the friction wheel 15. The bottom of the lifting block 16 is set as an inclined surface 17. The bottom of the slide rail 4 is also provided with a driving member for driving the moving frame 7 to work.

[0029] Specifically, a slide groove 21 is also provided on the top of the lifting block 16, and the buffer assembly includes a slide plate 22 slidably connected in the slide groove 21, a third spring 23 connected between the slide plate 22 and the slide groove 21, and a buffer plate 8 fixedly connected to the slider 5. When the slider 5 contacts the buffer plate 8, the buffer plate 8 can compress the third spring 23, thereby playing a buffering role, and the driving member includes a threaded rod 12 rotatably connected to the bottom of the slide rail 4 and a motor 13 arranged at the bottom of the slide rail 4, the driving shaft of the motor 13 is fixedly connected to the threaded rod 12, a convex plate 9 is fixedly connected to the movable frame 7, and the convex plate 9 is threadedly connected to the threaded rod 12, and in addition, a fixed plate 10 is fixedly connected to the bottom of the slide rail 4, the threaded rod 12 is rotatably connected to the fixed plate 10, and a guide rod 11 is also fixedly connected to the outside of the fixed plate 10, and the guide rod 11 passes through and is slidably connected to the convex plate 9.

[0030] The above technical solution is explained as follows: the motor 13 drives the threaded rod 12 to rotate, so that the movable frame 7 contacts the lifting block 16 through the contact wheel 15, and the lifting block 16 drives the buffer plate 8 to rise and contacts the sliding door 3, so the sliding door 3 will contact the buffer plate 8, and the buffer plate 8 compresses and buffers the third spring 23, thereby preventing the sliding door 3 from directly colliding with other customers' fingers and causing pinching injuries.

[0031] For buffering, a first spring 14 is sleeved on the outside of the threaded rod 12 , and two ends of the first spring 14 are connected to the fixing plate 10 and the convex plate 9 respectively.

[0032] In order to play a control role, a control component is also provided on the outside of the fresh-keeping cabinet main body 1. The specific control component is a controller 2 fixedly connected to the outside of the safe and a distance sensor 6 fixedly connected to the slide rail 4. The motor 13 and the distance sensor 6 are both electrically coupled to the controller 2.

[0033] In order for those skilled in the art to fully understand the technical solution, this embodiment is summarized as follows:

[0034] When in use, when the customer pushes and pulls the sliding door 3, the distance between the sliding door 3 and the end of the slide rail 4 is detected by the laser distance measuring sensor 6, and then the distance information is fed back to the controller 2 in time to control the speed of the sliding door 3. The speed formula is: V=S / T, where S is the distance of the moving frame 7 per unit time, and T is time. For example, if the controller 2 detects that the distance between the sliding door 3 and the end of the slide rail 4 is less than or equal to 20 cm, the speed of the moving frame 7 of the sliding door 3 is detected. If the speed of the moving frame 7 is greater than After the setting value, the controller 2 starts the motor 13, and the motor 13 drives the threaded rod 12 to rotate, so that the movable frame 7 contacts the lifting block 16 through the contact wheel 15, and the lifting block 16 drives the buffer plate 8 to rise and contacts the sliding door 3, so the sliding door 3 will contact the buffer plate 8, and the buffer plate 8 compresses and buffers the third spring 23, thereby preventing the sliding door 3 from directly colliding with other customers' fingers and causing pinching injuries. Then 5-10 seconds later, the motor 13 drives the threaded rod 12 to reverse, so that the contact wheel 15 no longer contacts the lifting block 16.

[0035] In the present invention, terms such as "upper", "lower", "left", "right", "front", "back", "vertical", "horizontal", "side", "bottom" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. They are relational words determined only for the convenience of describing the structural relationships of the various parts or elements of the present invention, and do not specifically refer to any part or element in the present invention and cannot be understood as limitations on the present invention.

Claims

1. An anti-pinch device for a fresh-keeping cabinet, comprising a fresh-keeping cabinet body (1), a slide rail (4) fixedly connected to the fresh-keeping cabinet body (1), a slider (5) slidably connected inside the slide rail (4), a sliding door (3) fixedly connected to the slider (5), characterized in that: A lifting block (16) is provided through the slide rail (4), a second spring (19) is provided between the lifting block (16) and the slide rail (4), a buffer component is provided on the lifting block (16), a moving frame (7) is provided at the bottom of the slide rail (4), one end of the moving frame (7) is rotatably connected to a resistance wheel (15), the bottom of the lifting block (16) is arranged as an inclined surface (17), the bottom of the slide rail (4) is also provided with a driving member for driving the moving frame (7) to work, and a control component is also provided on the outside of the fresh-keeping cabinet body (1).

2. The anti-pinch device for a fresh-keeping cabinet according to claim 1, characterized in that: The outside of the lifting block (16) is fixedly connected to a connecting plate (18), the second spring (19) is fixedly connected to the convex plate (9), and the top end of the second spring (19) is fixedly connected to the bottom end of the slide rail (4).

3. The anti-pinch device for a fresh-keeping cabinet according to claim 2, characterized in that: The top of the connecting plate (18) and the bottom of the slide rail (4) are both fixedly connected with magnets (20), and the two magnets (20) are arranged with the same poles to repel each other.

4. The anti-pinch device for a fresh-keeping cabinet according to claim 3, characterized in that: A slide groove (21) is also provided on the top of the lifting block (16), and the buffer assembly comprises a slide plate (22) slidably connected in the slide groove (21), a third spring (23) connected between the slide plate (22) and the slide groove (21), and a buffer plate (8) fixedly connected to the slider (5).

5. The anti-pinch device for a fresh-keeping cabinet according to claim 4, characterized in that: The driving member comprises a threaded rod (12) rotatably connected to the bottom of the slide rail (4) and a motor (13) arranged at the bottom of the slide rail (4); a driving shaft of the motor (13) is fixedly connected to the threaded rod (12); a convex plate (9) is fixedly connected to the movable frame (7); and the convex plate (9) is threadedly connected to the threaded rod (12).

6. The anti-pinch device for a fresh-keeping cabinet according to claim 5, characterized in that: A fixing plate (10) is fixedly connected to the bottom of the slide rail (4), the threaded rod (12) is rotatably connected to the fixing plate (10), and a guide rod (11) is also fixedly connected to the outside of the fixing plate (10), and the guide rod (11) passes through and is slidably connected to the convex plate (9).

7. The anti-pinch device for a fresh-keeping cabinet according to claim 6, characterized in that: The control component comprises a controller (2) fixedly connected to the outside of the safe and a distance sensor (6) fixedly connected to the slide rail (4); the motor (13) and the distance sensor (6) are both electrically coupled to the controller (2).

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