A fully automatic drawer

Abstract

The application relates to a full-automatic drawer and relates to the technical field of a vehicle-mounted refrigerator. The full-automatic drawer comprises a frame body and a conveying belt, the conveying belt transports the frame body to move along a predetermined track, the frame body is fixed with a drawer fixing block, the drawer fixing block has a hollow area, a sliding block is fixed on the conveying belt, the sliding block is located in the hollow area of the drawer fixing block, both ends of the sliding block are respectively provided with elastic members, both the elastic members abut against both ends of the drawer fixing block, the extension direction of the elastic members is along the moving direction of the frame body, a sensor is arranged on one side of the moving direction of the frame body, and the sensor is used for sensing the movement of the frame body. The application has the effects of being convenient and efficient for opening and closing the drawer, being stable in structure and being convenient to maintain.

Description

Technical Field

[0001] This application relates to the technical field of vehicle refrigerators, and in particular to a fully automatic drawer. Background Technology

[0002] With the development of intelligent new energy vehicles, users' demand for "mobile living spaces" has given rise to more scenario-based essential needs. A car refrigerator is a device installed in a vehicle for refrigerating items. Traditional car refrigerators with manual push-pull drawers are inconvenient when the vehicle is in motion or when manual operation is inconvenient for the user. Therefore, refrigerator drawers with automatic opening and closing functions have emerged. Existing fully automatic drawers are equipped with a one-button opening and closing function, allowing users to control the opening and closing of the refrigerator drawer door via a touch screen panel or drive motor control switch. Some fully automatic drawers also have anti-pinch and anti-collision functions. When the drawer encounters an obstacle while open, the MCU controller detects the Hall signal output by the motor and controls the motor to reverse a certain distance at an appropriate time based on the Hall signal.

[0003] Therefore, it is evident that existing car refrigerator drawers are in a partially open state when the anti-pinch or anti-collision function is triggered. Due to the motor's built-in locking function, the motor cannot be turned at this time; instead, the control switch must be pressed again to fully open or close the drawer. Consequently, this type of drawer cannot achieve the user's expected push-pull motion function, making it inconvenient to use. Utility Model Content

[0004] To address the issue that fully automatic drawers in car refrigerators can only be opened and closed by triggering the power switch again when fully open or partially open, this application provides a fully automatic drawer.

[0005] The fully automatic drawer provided in this application adopts the following technical solution: A fully automatic drawer includes a frame and a conveyor belt. The conveyor belt transports the frame along a predetermined track. A drawer fixing block is fixed to the frame, and the drawer fixing block has a hollow area. A sliding block is fixed on the conveyor belt, and the sliding block is located within the hollow area of ​​the drawer fixing block. Elastic elements are respectively provided at both ends of the sliding block, and the two elastic elements abut against the two ends of the drawer fixing block. The extension and retraction direction of the elastic elements is along the movement direction of the frame. A sensor is provided on one side of the frame in the movement direction to sense the movement of the frame.

[0006] By adopting the above technical solution, when the drawer encounters an obstacle during opening and closing, the drive motor stops rotating, the conveyor belt stops conveying, and the frame stops moving. After removing the obstacle, the elastic element provides a certain displacement space for the frame's movement. Manually pushing or pulling the frame allows for slight movement, which the sensor detects and sends a signal to make the drive motor continue rotating. Therefore, the drawer can be opened or closed manually after the obstacle is removed, without needing to trigger the power button again. Compared to existing technologies, this application triggers the drive motor immediately after manually pushing or pulling the frame after obstacle removal, thus opening and closing the drawer. This method is more suitable for common application scenarios.

[0007] Preferably, the drawer fixing block includes a fixing part, a mounting part, and a connecting part. The fixing part is fixedly connected to the frame, the mounting part is fixed at both ends of the fixing part, and the connecting part is fixed at the end of the mounting part away from the fixing part. The fixing part, the mounting part, and the connecting part together form a hollow area of ​​the drawer fixing block.

[0008] Preferably, the elastic element is a compression spring.

[0009] Preferably, the mounting part is provided with and fixed with a guide rod, the guide rod passes through both ends of the sliding block, and the two elastic elements are respectively sleeved on both ends of the guide rod.

[0010] Preferably, the sliding block has mounting grooves at both ends, one end of the elastic member is embedded in the mounting groove, and the other end of the elastic member abuts against the side of the mounting part facing the sliding block.

[0011] Preferably, retaining rings are provided at both ends of the guide rod, and the retaining rings abut against the side of the mounting part away from the sliding block to limit the axial displacement of the guide rod.

[0012] Preferably, the two ends of the sliding block form limiting protrusions along the extension and retraction direction of the elastic element, and the limiting protrusions abut against the side of the drawer fixing block facing the sliding block to prevent the elastic element from being over-compressed.

[0013] Preferably, the back of the conveyor belt is provided with a rack, the sliding block is provided with a toothed groove for the rack to engage, and a fixing plate is fixedly connected to the sliding block. The fixing plate presses onto the conveyor belt to prevent the rack from disengaging from the toothed groove.

[0014] Preferably, a limiting block is provided on the side of the frame facing the sensor, and the sensor abuts against the limiting block to limit the frame.

[0015] In summary, this application includes at least one of the following beneficial technical effects: Convenient and efficient, and more in line with user habits, after manually removing obstacles, the frame can be pushed or pulled immediately to trigger the drive motor, thereby opening and closing the drawer without having to trigger the switch again. The structure is stable and reliable, with precise positioning. The sliding block and the conveyor belt are firmly connected by a fixed plate, and the guide rod is clamped and fixed by a retaining ring. The mounting groove limits the installation position of the compression spring, and the limiting protrusion limits the compression of the compression spring to prevent excessive compression of the elastic element. The limiting block limits the movement of the frame to prevent the frame from falling out.

[0016] It is easy to maintain, can be flexibly replaced, and the components can be disassembled and fixed, enabling flexible and efficient maintenance and extending the service life of the mechanism. Attached Figure Description

[0017] Figure 1 This is a cross-sectional view of the fully automatic drawer in the embodiments of this application.

[0018] Figure 2 This is a partial structural diagram of the fully automatic drawer in an embodiment of this application.

[0019] Figure 3 This is another partial structural diagram of the fully automatic drawer in the embodiments of this application.

[0020] Figure 4 This is an exploded view of the fully automatic drawer in the embodiments of this application.

[0021] Figure 5 This is another cross-sectional view of the fully automatic drawer in the application embodiment.

[0022] Figure 6 This is another exploded view of the fully automatic drawer in the embodiments of this application.

[0023] Figure 7 This is another partial structural diagram of the fully automatic drawer in the embodiments of this application.

[0024] Figure 8 This is an exploded view of the sensor of the fully automatic drawer in the embodiment of this application.

[0025] Explanation of reference numerals in the attached drawings: 1. Frame; 2. Outer base; 3. Transmission mechanism; 4. Drawer drive assembly; 45. Connecting assembly; 43. Sensor; 35. Coupling part; 41. Fixing assembly; 42. Elastic buffer system; 411. Drawer fixing block; 412. Sliding block; 421. Elastic element; 422. Compression spring; 413. Fixing part; 414. Mounting part; 415. Connecting part; 423. Guide rod; 416. Mounting groove; 417. Retaining ring; 418. Limiting protrusion; 31. Driving pulley; 32. Driven pulley; 33. Motor; 34. Conveyor belt; 419. Gear groove; 44. Fixing plate; 5. Base plate; 6. Sensor; 51. Slit; 52. Grating strip; 61. Slide groove; 53. Grating part; 54. Assembly part; 11. Limiting block. Detailed Implementation

[0026] The following is in conjunction with the appendix Figure 1-8 This application will be described in further detail.

[0027] This application discloses a fully automatic drawer. (Refer to...) Figure 1 and Figure 2 The fully automatic drawer includes a frame 1, an outer base 2, a transmission mechanism 3, and a drawer drive assembly 4. The frame 1 and the outer base 2 are slidably connected. The drawer drive assembly 4 connects the frame 1 and the pulley transmission mechanism 3, enabling the pulley transmission mechanism 3 to drive the frame 1 to automatically open or close. The drawer drive assembly 4 includes a connecting component 45 and a sensor 43 for detecting the displacement of the frame 1. The connecting component 45 connects the transmission mechanism 3 and the frame 1. The transmission mechanism 3 has a coupling part 35 fixedly connected to the connecting component 45. The connecting component 45 allows the frame 1 to be forced to move a certain distance along the pull-out direction of the frame 1. The connecting component 45 includes a fixing component 41 and an elastic buffer system 42. The fixing component 41 is fixedly connected to the coupling part 35 to fix the transmission mechanism 3 and the frame 1 relatively. The elastic buffer system 42 allows the user to manually drive the frame 1 to move a certain distance when the transmission mechanism 3 stops working. When the frame 1 encounters an obstacle during the opening and closing process, the transmission mechanism 3 stops working. At this time, after manually removing the obstacle, the frame 1 is manually pushed and pulled to move the frame 1 a certain distance. At this time, the sensor 43 senses the movement of the frame 1 and sends a signal to make the transmission mechanism 3 resume working, thereby realizing the rapid and efficient opening and closing of the frame 1.

[0028] Reference Figure 3 and Figure 4The fixing component 41 includes a drawer fixing block 411 and a sliding block 412. The drawer fixing block 411 is fixed to the frame 1, and the sliding block 412 is fixedly connected to the coupling part 35. The drawer fixing block 411 has a hollow area, and the sliding block 412 is relatively fixed in the hollow area of ​​the drawer fixing block 411. The elastic buffer system 42 includes elastic elements 421, which are disposed in the hollow areas at both ends of the sliding block 412. The two elastic elements 421 respectively abut against the two ends of the drawer fixing block 411. When the frame 1 is manually pushed or pulled, due to the elastic deformation of the elastic element 421, the drawer fixing block 411 compresses the elastic element 421, causing the frame 1 to move. At this time, the sensor 43 senses the movement of the frame 1 and transmits a signal. As a preferred embodiment, the elastic element 421 is a compression spring 422. Furthermore, the elastic element 421 can also be made of an elastic filling material. For example, an elastic filling material shaped into a column can be filled between the sliding block 412 and the drawer fixing block 411 so that the sliding block 412 can move relative to the drawer fixing block 411. Thus, the elastic element 421 only needs to allow the sliding element to move to a certain extent.

[0029] Reference Figure 2 and Figure 4 The drawer fixing block 411 includes a fixing part 413, a mounting part 414, and a connecting part 415. The fixing part 413 is fixedly connected to the frame 1, specifically by bolts or screws. The mounting part 414 is fixed at both ends of the fixing part 413, and the connecting part 415 is fixed at the end of the mounting part 414 away from the fixing part 413. The fixing part 413, the mounting part 414, and the connecting part 415 together form the hollow area of ​​the drawer fixing block 411. Preferably, the fixing part 413, the mounting part 414, and the connecting part 415 are integrally formed.

[0030] Reference Figure 5 and Figure 6The elastic buffer system 42 also includes a guide rod 423, which passes through and is fixed to the mounting part 414. The guide rod 423 passes through both ends of the sliding block 412, and the drawer fixing block 411 and the sliding block 412 are relatively fixed by the guide rod 423. Two compression springs 422 are respectively sleeved on both ends of the guide rod 423. One end of the compression spring 422 abuts against the sliding block 412, and the other end of the compression spring 422 abuts against the side of the mounting part 414 facing the sliding block 412. The sliding block 412 is also provided with a mounting groove 416, and one end of the compression spring 422 is embedded in the mounting groove 416. The mounting groove 416 limits the compression spring 422, making the compression spring 422 more stable when it extends and retracts. The guide rod 423 passes through the mounting groove 416 and is fixed to the mounting part 414. In one embodiment, retaining rings 417 are provided at both ends of the guide rod 423. The retaining rings 417 are fixed to the guide rod 423 so that the guide rod 423 is fixedly connected to the drawer fixing block 411. The sliding block 412 is fixed relative to the drawer fixing block 411. The retaining rings 417 abut against the side of the mounting part 414 away from the sliding block 412 to limit the axial displacement of the guide rod 423.

[0031] Reference Figure 3 and Figure 6 Limiting protrusions 418 are formed at both ends of the sliding block 412. The limiting protrusions 418 are set along the extension and retraction direction of the compression spring 422. When the compression spring 422 is compressed, the limiting protrusions 418 abut against the side of the drawer fixing block 411 facing the sliding block 412. The compression spring 422 reaches the maximum compression amount. The limiting protrusions 418 prevent the compression spring 422 from being compressed further, resulting in excessive compression.

[0032] Reference Figure 2 and Figure 4 In one embodiment, the transmission mechanism 3 employs a belt pulley drive. The transmission mechanism 3 includes a driving pulley 31, a driven pulley 32, a motor 33, and a conveyor belt 34. The driving pulley 31 is connected to the output shaft of the motor 33. The driven pulley 32 is fixedly connected to the frame 1. The conveyor belt 34 is sleeved on the driving pulley 31 and the driven pulley 32 to achieve linkage between the two pulleys. Specifically, the conveyor belt 34 is meshed with the driving pulley 31 and the driven pulley 32. A rack is provided on the back of the conveyor belt 34. The coupling part 35 is a section of the belt with the rack on the conveyor belt 34. The sliding block 412 has a toothed groove 419 for the rack to mesh with. The meshing of the rack and the toothed groove 419 fixes the sliding block 412 relatively to the conveyor belt 34. Further, a fixing plate 44 is fixedly connected to the sliding block 412. The fixing plate 44 and the sliding block 412 can be fixedly connected by screws. After the rack is engaged in the tooth groove 419, the fixing plate 44 presses and fixes itself onto the sliding block 412. The fixing plate 44 abuts against the coupling part 35 to prevent the rack from dislodging from the tooth groove 419. Alternatively, the transmission mechanism 3 can also employ a lead screw motor or a cylinder.

[0033] Reference Figure 7 and Figure 8 In a preferred embodiment, sensor 43 employs a photoelectric encoder. Specifically, the photoelectric encoder includes a substrate 5 with periodically light-transmitting areas and a sensor 6. The substrate 5 is fixed to the frame 1, and the sensor 6 is fixed to the outer base 2. The sensor 6 is slidably connected to the substrate 5. When the frame 1 moves, the sensor 6 can slide relative to the substrate 5 along the length direction of the substrate 5. The substrate 5 and the frame 1, and the sensor 6 and the outer base 2 can be fixed by bolt fastening, screw fixing, or other fixed connection methods. The substrate 5 has a plurality of slits 51 spaced along its length direction, penetrating the substrate 5. The slits 51 divide the substrate 5 into light-transmitting and light-shielding portions. The slits 51 are light-transmitting portions, and grating strips 52 are formed on both sides of the slits 51, which are light-shielding portions. The light-shielding and light-transmitting portions are arranged alternately to form a grating array.

[0034] Sensor 6 has a light source and a photosensitive element, which can be a photodiode or phototransistor. When the light-transmitting part on substrate 5 moves between the light source and the photosensitive element, light can pass through substrate 5 and illuminate the photosensitive element, at which point the photosensitive element conducts and generates a high-level or current signal. When the light-shielding part on substrate 5 moves between the light source and the photosensitive element, the light is blocked, and the photosensitive element is cut off, generating a low-level or no-current signal. When the frame 1 moves, the substrate 5 fixed on the frame 1 moves accordingly. Since the light-transmitting and light-shielding parts are arranged periodically and alternately, the light intensity received by the photosensitive element will periodically change during the relative sliding process of substrate 5 and sensor 6, resulting in a periodic change in the output electrical signal of the photosensitive element, generating a series of square wave pulse signals. Each pulse corresponds to a movement of one grating spacing. By counting the number of pulse signals generated, the number of "grating periods" that substrate 5 moves relative to sensor 6 can be determined, thereby allowing the calculation of the displacement of frame 1 relative to outer base 2.

[0035] In one specific embodiment, the sensor 6 has a groove 61 through which the substrate 5 passes. A light source and a photosensitive element are respectively arranged on the two sides of the groove 61, so that the substrate 5 is located between the light source and the photosensitive element. When the substrate 5 slides relative to each other along the groove 61, the light source and the photosensitive element cooperate to output a pulse signal.

[0036] More specifically, the critical distance at which the frame 1 moves to trigger the sensor 43 to transmit a signal can be set to 3mm. When the frame 1 moves a distance ≥3mm, the sensor 43 transmits a signal to make the transmission mechanism 3 resume operation.

[0037] The substrate 5 includes an integrally connected grating portion 53 and an assembly portion 54. The assembly portion 54 is fixedly connected to the frame 1 to fix the substrate 5 and the frame 1. Specifically, it can be fixed by bolts or screws. The grating portion 53 is arranged along the moving direction of the frame 1, and a slit 51 is provided on the grating portion 53. When the frame 1 moves, the grating portion 53 slides relative to the frame 1 along the slide groove 61, and the sensor 6 senses the periodic change of the light signal and transmits the displacement signal.

[0038] In addition, the sensor 43 can also be an infrared rangefinder, an ultrasonic sensor, or other ranging sensors. A limiting block 11 is provided on the side of the frame 1 facing the sensor 43. When the frame 1 is pulled out to the point where the limiting block 11 abuts against the sensor 43, the frame 1 reaches its maximum pull-out limit. The limiting block 11 limits the frame 1 to prevent the frame 1 from completely coming out.

[0039] The implementation principle of a fully automatic drawer according to an embodiment of this application is as follows: a drawer fixing block 411 is fixed on the frame 1, a sliding block 412 is fixed in the hollow area of ​​the drawer fixing block 411, the sliding block 412 is fixed to the conveyor belt 34 through a rack and tooth groove 419 meshing, and a fixing plate 44 is fixed on the sliding block 412 and abuts against the conveyor belt 34 to prevent the rack from disengaging from the tooth groove 419. A guide rod 423 passes through both ends of the sliding block 412 and passes through the mounting part 414. The guide rod 423 is fixed to the mounting part 414 through a retaining ring 417, which restricts the axial sliding of the guide rod 423. The sliding block 412 is provided with a mounting groove 416 for mounting a compression spring 422. The compression spring 422 is sleeved on the guide rod 423. One end of the compression spring 422 is embedded in the mounting groove 416, and the other end of the compression spring 422 abuts against the side of the mounting part 414 facing the sliding block 412. The two ends of the sliding block 412 are also provided with limiting protrusions 418. The compression spring 422 is compressed to the maximum amount when the limiting protrusions 418 abut against the mounting part 414. The limiting protrusions 418 prevent the compression spring 422 from being over-compressed. The light-transmitting part and the light-blocking part are arranged alternately periodically. When the frame 1 moves, the grating part 53 located between the light source and the photosensitive element slides relative to the sliding groove 61. The light signal received by the photosensitive element changes periodically to generate a pulse signal. The movement distance of the frame 1 is measured by the pulse signal. If the movement distance of the frame 1 reaches the critical value, the sensor 6 transmits a signal to the motor 33. Therefore, when the frame 1 encounters an obstacle during its movement, the motor 33 stops working. After the obstacle is manually removed, the frame 1 is manually pushed or pulled to move it a certain distance. After the sensor 6 senses the displacement of the frame 1, it sends a signal to make the motor 33 resume working, thereby making the frame 1 continue to move to complete the opening or closing.

[0040] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A fully automatic drawer, comprising a frame (1) and a conveyor belt (34), the conveyor belt (34) conveying the frame (1) along a predetermined track, characterized in that: The frame (1) is fixed with a drawer fixing block (411), the drawer fixing block (411) has a hollow area, the conveyor belt (34) is fixed with a sliding block (412), the sliding block (412) is located in the hollow area of ​​the drawer fixing block (411), the two ends of the sliding block (412) are respectively provided with elastic elements (421), the two elastic elements (421) respectively abut against the two ends of the drawer fixing block (411), the extension and retraction direction of the elastic elements (421) is along the moving direction of the frame (1), a sensor (43) is provided on one side of the moving direction of the frame (1), the sensor (43) is used to sense the movement of the frame (1).

2. The fully automatic drawer according to claim 1, characterized in that: The drawer fixing block (411) includes a fixing part (413), a mounting part (414), and a connecting part (415). The fixing part (413) is fixedly connected to the frame (1). The mounting part (414) is fixed at both ends of the fixing part (413). The connecting part (415) is fixed at one end of the mounting part (414) away from the fixing part (413). The fixing part (413), the mounting part (414), and the connecting part (415) enclose and form the hollow area of ​​the drawer fixing block (411).

3. The fully automatic drawer according to claim 2, characterized in that: The elastic element (421) is a compression spring (422).

4. The fully automatic drawer according to claim 3, characterized in that: The mounting part (414) is provided with a guide rod (423) which passes through both ends of the sliding block (412). The two elastic elements (421) are respectively sleeved on both ends of the guide rod (423).

5. The fully automatic drawer according to claim 3, characterized in that: The sliding block (412) has mounting grooves (416) at both ends. One end of the elastic member (421) is embedded in the mounting groove (416), and the other end of the elastic member (421) abuts against the side of the mounting part (414) facing the sliding block (412).

6. The fully automatic drawer according to claim 4, characterized in that: The guide rod (423) has retaining rings (417) at both ends. The retaining rings (417) abut against the side of the mounting part (414) away from the sliding block (412) to limit the axial displacement of the guide rod (423).

7. The fully automatic drawer according to claim 1, characterized in that: The sliding block (412) has limit protrusions (418) at both ends along the extension and retraction direction of the elastic member (421). The limit protrusions (418) abut against the side of the drawer fixing block (411) facing the sliding block (412) to prevent the elastic member (421) from being compressed excessively.

8. The fully automatic drawer according to claim 1, characterized in that: The back of the conveyor belt (34) is provided with a rack, and the sliding block (412) is provided with a toothed groove (419) for the rack to engage. A fixing plate (44) is fixedly connected to the sliding block (412), and the fixing plate (44) presses on the conveyor belt (34) to restrict the rack from coming out of the toothed groove (419).

9. The fully automatic drawer according to claim 1, characterized in that: The frame (1) has a limiting block (11) on the side facing the sensor (43), and the sensor (43) abuts against the limiting block (11) to limit the frame (1).

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