An automatically sensing push-pull box structure

Abstract

This utility model discloses an automatically sensing push-pull cabinet structure, including: a drawer with a movable plate at the bottom; a base slidably connected to the drawer; a drive structure disposed on the base for driving the drawer's movement; and a detection system mounted on the movable plate for providing control signals to the drive structure. The movable plate has a light-transmitting area. The detection system includes multiple sets of infrared photodiodes and an MCU controller. The infrared photodiodes transmit signals through the light-transmitting area and transmit the signals to the MCU controller. The MCU controller is connected to the drive structure and controls its forward and reverse rotation. The drive structure also includes a motor connected to the MCU controller and a synchronous pulley, driving the pulley to rotate. The infrared photodiodes include a transmitter and a receiver. The transmitter and receiver generate low or high voltage levels through the movement of the light-transmitting area, and generate waveforms in the MCU controller. This design solves the problems of high cost and poor stability in existing vehicle-mounted drawer automatic control systems.

Description

Technical Field

[0001] This utility model belongs to the field of intelligent vehicle equipment, and in particular relates to an automatically sensing push-pull box structure. Background Technology

[0002] With the trend of intelligent upgrades in automotive interiors, the demand for intelligent and automated in-vehicle push-pull storage boxes is increasing. Existing door control systems for in-vehicle push-pull storage devices mainly rely on manual pushing and pulling. To achieve intelligent and automated systems and improve the convenience and user experience of controlling the storage device doors, the following solutions exist in existing technologies:

[0003] Hall sensor solution: susceptible to electromagnetic interference from vehicle components (such as motors and audio systems), which can cause signal distortion.

[0004] Mechanical contact encoders: suffer from physical wear and tear, and are prone to poor contact in the vibration environment of a car.

[0005] Laser ranging module: high cost, complex structure, and poor environmental adaptability.

[0006] In general, existing automatic control solutions suffer from high costs and susceptibility to failure. Utility Model Content

[0007] The purpose of this invention is to provide an automatically sensing push-pull box structure to solve the problems of high cost and poor stability of existing vehicle drawer automatic control.

[0008] This utility model discloses an automatically sensing push-pull box structure, including:

[0009] The drawer has a movable panel at the bottom;

[0010] The base slides into the drawer;

[0011] The drive structure, located on the base, is used to drive the drawer movement;

[0012] The detection system, mounted on the movable plate, provides control signals to the drive structure.

[0013] Preferably, the movable plate is provided with a light-transmitting area, and the detection system includes multiple sets of infrared phototransistors and at least one MCU controller. The infrared phototransistors detect the movement signal of the movable plate through the light-transmitting area and transmit the movement signal of the movable plate to the MCU controller. The MCU controller is connected to the driving structure and is used to control the forward and reverse rotation of the driving structure.

[0014] Preferably, the light-transmitting area is a closed-loop perforation structure or an unclosed groove structure. The closed-loop perforation structure can be a square hole, a round hole, or any other type of hole. The unclosed groove structure can be a rectangular groove, an arc-shaped groove, or a polygonal sawtooth groove, allowing light to pass through. Alternatively, transparent material can be installed in this area to achieve light transmission. The goal is to meet the light transmission requirements.

[0015] Preferably, the drive structure includes a first mounting block and a second mounting block, which are fixedly mounted on the base. Synchronous pulleys are rotatably mounted in both the first and second mounting blocks, and a synchronous belt is provided between the two pulleys. A chuck is mounted on the synchronous belt and connected to a drawer. The synchronous pulleys are mounted on a rotating shaft, which is mounted within the mounting blocks via bearings. The first and second mounting blocks are respectively mounted on both sides of the base. The synchronous belt structure should be designed with a tension adjustment mechanism, allowing for installation at a suitable position. Since precise positional movement is not required here, a pre-tensioning design can replace the tension adjustment mechanism.

[0016] Preferably, the chuck is equipped with a position sensor, which is connected to the MCU controller and used to provide a stop signal. The position sensor is used to define limit positions and set motion boundaries. If a distance sensor is used, the motion boundaries can be adjusted via the control panel.

[0017] Preferably, the synchronous belt is a toothed synchronous belt. The toothed synchronous belt transmits power through the meshing of the teeth, avoiding slippage and slippage, thereby achieving extremely high position control accuracy.

[0018] Preferably, the drive structure further includes a motor, which is connected to the MCU controller and to one of the synchronous pulleys, driving the synchronous pulleys to rotate. A speed reduction device may be installed between the motor and the synchronous pulleys.

[0019] Preferably, the infrared pair includes a transmitter and a receiver connected in parallel. The receiver is connected to an output terminal, which is connected to an MCU controller. The transmitter and receiver generate a low or high level through the movement of the light-transmitting area, and generate a waveform in the MCU controller.

[0020] Preferably, the infrared transistor circuit structure includes an infrared emitting unit, an infrared receiving unit, and an output unit. The infrared emitting unit includes an infrared emitting diode IR1 and a current-limiting resistor R3. The infrared emitting diode IR1 and the current-limiting resistor R3 are connected in series. One end of the infrared emitting diode IR1 is connected to a 5V power supply through the current-limiting resistor R3, and the other end is connected to GND. The infrared receiving unit includes an infrared receiving diode U3 and a pull-up resistor R4. The infrared receiving diode U3 and the pull-up resistor R4 are connected in series. One end of the infrared receiving diode U3 is connected to a 5V power supply through the pull-up resistor R4, and the other end is connected to GND. The output unit includes a MOSFET Q1 and a pull-up resistor R5. The gate of the MOSFET Q1 is connected to the junction of the infrared receiving diode U3 and the pull-up resistor R4. The drain of the MOSFET Q1 is connected to a 5V power supply through the pull-up resistor R5, and the source is connected to GND. VOUT is led out from the drain of the MOSFET Q1 as the circuit output. The change in the light signal received by the infrared receiving diode U3 will change the gate voltage of the MOSFET Q1, thereby controlling the MOSFET Q1 to be turned on or off, realizing the change of VOUT level.

[0021] Preferably, the base and the drawer are slidably connected via a slide rail assembly.

[0022] Compared with the prior art, the beneficial effects of this utility model are:

[0023] Achieve automatic sensing and intelligent control: Without the need for physical switches, the system detects the pushing and pulling motion of the drawer, uses infrared photocells and an MCU controller to automatically determine the direction of movement (forward / reverse), and controls the motor to rotate forward or backward accordingly, thus achieving automatic opening and closing of the drawer, improving the convenience and intelligence of use.

[0024] High-precision and reliable transmission: The use of toothed synchronous belts and pulleys ensures the synchronicity and accuracy of the drawer's movement, avoiding slippage that can occur with traditional belt drives, thus improving positioning accuracy and operational reliability. The high load capacity and long lifespan of the toothed synchronous belts also guarantee the stability of the structure under frequent use.

[0025] Low noise and comfortable experience: The toothed synchronous belt and overall flexible structure design make the drawer quiet and vibrate during operation, providing users with a quieter and more comfortable environment, especially suitable for noise-sensitive occasions.

[0026] Simple structure and low cost: Compared with Hall effect, traditional mechanical or laser solutions, this embodiment only uses two simple infrared photodiodes to achieve the direction detection function. The structural design is relatively simple, the number of components is small, and the manufacturing cost and complexity are significantly reduced.

[0027] Strong environmental adaptability: This design places special emphasis on its applicability in the automotive environment, possessing vibration resistance and wide temperature range characteristics, meeting automotive-grade requirements, indicating that it has strong environmental adaptability and can work stably under various operating conditions. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0029] Figure 2 This is a side view of the structure of this utility model;

[0030] Figure 3 This is one of the schematic diagrams of the internal structure of this utility model;

[0031] Figure 4 This is the second schematic diagram of the internal structure of this utility model;

[0032] Figure 5 This is a schematic diagram of the detection system of this utility model;

[0033] Figure 6 This is a schematic diagram of the movable plate structure of this utility model;

[0034] Figure 7 This is a schematic diagram of the infrared phototransistor circuit structure of this utility model;

[0035] Figure 8 This is a schematic diagram of the internal structure of the detection system of this utility model;

[0036] Figure 9 This is a schematic diagram of the infrared phototransistor waveform of this utility model.

[0037] Reference numerals: 1. Drawer; 11. Movable plate; 111. Light-transmitting area; 2. Base; 3. Drive structure; 31. First mounting block; 32. Second mounting block; 33. Synchronous pulley; 34. Synchronous belt; 35. Chuck; 36. Position sensor; 4. Detection system; 5. Slide rail assembly. Detailed Implementation

[0038] To make the technical means, creative features, and achieved objectives and effects of this utility model readily understandable, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0039] like Figures 1 to 4 As shown, the automatic sensing push-pull box structure of this embodiment includes:

[0040] Drawer 1, with a movable panel 11 at the bottom;

[0041] The base 2 is slidably connected to the drawer 1; the base 2 and the drawer 1 are slidably connected via a slide rail assembly 5. The slide rail assembly 5 is connected to the base 2 and the drawer 1 by screws or clips, facilitating maintenance and disassembly.

[0042] Drive structure 3, located on base 2, is used to drive drawer 1 to move;

[0043] The detection system 4, mounted on the movable plate 11, provides control signals to the drive structure 3. The drive structure 3 includes a first mounting block 31 and a second mounting block 32, both fixedly mounted on the base 2. Synchronous pulleys 33 are rotatably mounted in both blocks, and a synchronous belt 34 is positioned between them. A chuck 35 is mounted on the synchronous belt 34 and fixed to the toothed synchronous belt. The chuck 35 is connected to the drawer 1. The synchronous belt 34 is a toothed synchronous belt. The toothed synchronous belt meshes with the toothed synchronous pulleys 33, and the rotation of the pulleys 33 drives the toothed synchronous belt. The chuck 35 is fixedly mounted on the toothed synchronous belt and controls its movement. The drive structure 3 also includes a motor connected to an MCU controller and a synchronous pulley 33, driving the pulley 33 to rotate. The MCU controller is mainly used here to control the motor's forward, reverse, and stop functions, enabling the drawer to open and close.

[0044] A position sensor 36 is installed on the chuck 35. The position sensor 36 is connected to the MCU controller and is used to provide a stop signal. The position sensor 36 is a proximity sensor for limit position setting. When the chuck 35 reaches the set limit position, the proximity sensor sends a signal to the MCU controller, causing the motor to stop. Alternatively, the position sensor 36 can be a rigid contact sensor. When the chuck 35 collides with the positioning block, a signal is generated to the MCU controller to stop the motor.

[0045] The active plate 11 is provided with a light-transmitting area 111. The detection system 4 includes multiple sets of infrared phototransistors and an MCU controller. The infrared phototransistors transmit signals through the light-transmitting area 111 and transmit the signals to the MCU controller. The MCU controller is connected to the drive structure 3 and is used to control the forward and reverse rotation of the drive structure 3.

[0046] like Figure 5 and Figure 6 As shown, the light-transmitting area 111 is a closed-pore structure or an unclosed groove structure.

[0047] The infrared pair includes a transmitter and a receiver connected in parallel. The receiver is connected to an output terminal, which is connected to an MCU controller. The transmitter and receiver generate low or high levels through the movement of the light-transmitting area 111, and generate a waveform in the MCU controller.

[0048] like Figure 7 As shown, the infrared transistor circuit structure includes an infrared emitting unit, an infrared receiving unit, and an output unit. The infrared emitting unit includes an infrared emitting diode IR1 and a current-limiting resistor R3. The infrared emitting diode IR1 and the current-limiting resistor R3 are connected in series. One end of the infrared emitting diode IR1 is connected to a 5V power supply through the current-limiting resistor R3, and the other end is connected to GND. The infrared receiving unit includes an infrared receiving diode U3 and a pull-up resistor R4. The infrared receiving diode U3 and the pull-up resistor R4 are connected in series. One end of the infrared receiving diode U3 is connected to a 5V power supply through the pull-up resistor R4, and the other end is connected to GND. The output unit includes a MOSFET Q1 and a pull-up resistor R5. The gate of the MOSFET Q1 is connected to the junction of the infrared receiving diode U3 and the pull-up resistor R4. The drain of the MOSFET Q1 is connected to a 5V power supply through the pull-up resistor R5, and the source is connected to GND. The output voltage VOUT is led out from the drain of the MOSFET Q1 as the circuit output. The change in the light signal received by the infrared receiving diode U3 will change the gate voltage of the MOSFET Q1, thereby controlling the MOSFET Q1 to turn on or off, realizing the change of VOUT level. The selection of the above-mentioned resistor values ​​is a conventional technique in this field and is not detailed here.

[0049] like Figure 8 The diagram shows a schematic of an infrared photodiode pair, comprising two sets of infrared photodiodes A and B. A1 and B1 are the transmitting ends, and A2 and B2 are the receiving ends. The transmitting and receiving ends of infrared photodiodes A and B are staggered; this staggered placement prevents interference between the transmitting and receiving ends of the two sets of infrared photodiodes.

[0050] like Figure 9The diagram shows the waveforms of infrared photodiodes A and B. The principle of the infrared photodiode module is as follows: When the movable plate 11 blocks the infrared photodiode, the infrared receiver U3 does not receive infrared light, is cut off, and generates no current signal. The MOSFET Q1 is also cut off, and no current flows through the pull-up resistor R5, causing VOUT voltage to approach 5V and output a high level. When the movable plate 11 does not block the infrared photodiode, the infrared receiver U3 receives infrared light, conducts, and generates a current signal, which is transmitted to the base of the MOSFET Q1. The MOSFET Q1 conducts, and current flows through the pull-up resistor R5 to GND, causing VOUT voltage to drop and output a low level. When the movable plate 11 horizontally moves forward / backward, it smoothly blocks infrared photodiode module A, generating a signal output to the controller module to trigger the judgment of the change in VOUT level of infrared photodiode module B. The forward / backward direction of the movable plate is determined based on the high / low level of infrared module B. Finally, the controller module outputs a signal via a serial port. The signal output uses UART communication, which transmits data bit by bit through a single line, splitting bytes into multiple bits for sequential transmission. Communication between the sensor and the MCU can be achieved by using the same baud rate, check bit, and stop bit between the sending and receiving parties, and by encrypting and decrypting the data according to the data format agreed upon by both parties.

[0051] Specifically, in forward motion, when the drawer is pulled outward, A is faster than B. The rising edge of the waveform of A is taken, and B is at a high level. This is used to determine that it is forward motion, so the motor is controlled to move in the forward direction.

[0052] Reverse motion, that is, when the drawer is pushed inward, B is faster than A. Taking the rising edge of the waveform of A, B is at a low level. Based on this, it is determined that it is reverse motion, so the motor is controlled to move in the opposite direction.

[0053] It should be noted that the drawer product in this embodiment has no switch control. The movable plate 11 moves by manually pushing or pulling out the drawer. The detection system determines whether the movement is forward or reverse, and the MCU sends a movement command to the motor.

[0054] This embodiment utilizes a photoelectric induction encoder sensor to output signals to an MCU, controlling the opening and closing of the storage unit. The photoelectric induction encoder sensor employs two sets of infrared transmitter-receiver pairs placed at fixed horizontal intervals. A movable plate with spaced infrared light-transmitting holes is positioned between the transmitter and receiver LEDs. The movable plate is fixed to the drawer; the drawer's movement moves the movable plate along with it. The direction of movement can be determined by the sequence of blockages by the movable plate, and displacement quantization is achieved through pulse counting. The sensor sends signals to the MCU, which determines whether the storage unit is open or closed, thereby activating the motor to rotate forward or reverse, automatically opening or closing the storage unit.

[0055] This embodiment utilizes only two sets of infrared transmitter-receiver pairs to realize the encoder function of the sensor, achieving automation and intelligence of the push-pull equipment enclosure. In the vehicle environment, it also has vibration resistance and wide temperature range characteristics, meeting automotive-grade requirements.

[0056] Compared with existing technologies using Hall effect solutions, traditional mechanical solutions, and laser solutions, this technology is simpler in structure, lower in cost, easier to install, more adaptable to the environment, and compatible with various sliding storage door types.

[0057] The above descriptions are merely embodiments of this utility model, and the specific structures and characteristics disclosed in the solutions are not described in detail here. It will be apparent to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this utility model is defined by the appended claims rather than the foregoing description. Therefore, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. An automatically sensing push-pull box structure, characterized in that, include: Drawer (1), with a movable panel (11) at the bottom; The base (2) is slidably connected to the drawer (1); A drive structure (3) is provided on the base (2) and is used to drive the drawer (1) to move; The detection system (4) is installed on the movable plate (11) and provides control signals to the drive structure (3).

2. The automatically sensing push-pull box structure according to claim 1, characterized in that, The movable plate (11) is provided with a light-transmitting area (111). The detection system (4) includes multiple sets of infrared phototransistors and at least one MCU controller. The infrared phototransistors detect the moving signal of the movable plate through the light-transmitting area (111) and transmit the moving signal of the movable plate to the MCU controller. The MCU controller is connected to the driving structure (3) and is used to control the forward and reverse rotation of the driving structure (3).

3. The automatically sensing push-pull box structure according to claim 2, characterized in that, The light-transmitting area (111) is a closed pore structure or an unclosed groove structure.

4. The automatically sensing push-pull box structure according to claim 3, characterized in that, The drive structure (3) includes a first mounting block (31) and a second mounting block (32). The first mounting block (31) and the second mounting block (32) are fixedly mounted on the base (2). Synchronous pulleys (33) are rotatably mounted in the first mounting block (31) and the second mounting block (32). A synchronous belt (34) is provided between the two synchronous pulleys (33). A chuck (35) is mounted on the synchronous belt (34). The chuck (35) is connected to the drawer (1).

5. The automatically sensing push-pull box structure according to claim 4, characterized in that, The chuck (35) is equipped with a position sensor (36), which is connected to the MCU controller and is used to provide a stop signal.

6. The automatically sensing push-pull box structure according to claim 4, characterized in that, The synchronous belt (34) is a toothed synchronous belt.

7. The automatically sensing push-pull box structure according to claim 4, characterized in that, The drive structure (3) also includes a motor, which is connected to the MCU controller and a synchronous pulley (33) to drive the synchronous pulley (33) to rotate.

8. The automatically sensing push-pull box structure according to claim 7, characterized in that, The infrared pair includes a transmitter and a receiver connected in parallel. The receiver is connected to an output terminal, which is connected to an MCU controller.

9. The automatically sensing push-pull box structure according to claim 8, characterized in that, The infrared transistor circuit structure includes an infrared emitting unit, an infrared receiving unit, and an output unit. The infrared emitting unit includes an infrared emitting diode IR1 and a current-limiting resistor R3. The infrared emitting diode IR1 and the current-limiting resistor R3 are connected in series. One end of the infrared emitting diode IR1 is connected to a 5V power supply through the current-limiting resistor R3, and the other end is connected to GND. The infrared receiving unit includes an infrared receiving diode U3 and a pull-up resistor R4. The infrared receiving diode U3 and the pull-up resistor R4 are connected in series. One end of the infrared receiving diode U3 is connected to a 5V power supply through the pull-up resistor R4, and the other end is connected to GND. The output unit includes a MOSFET Q1 and a pull-up resistor R5. The gate of the MOSFET Q1 is connected to the junction of the infrared receiving diode U3 and the pull-up resistor R4. The drain of the MOSFET Q1 is connected to a 5V power supply through the pull-up resistor R5, and the source is connected to GND. VOUT is led out from the drain of the MOSFET Q1 as the circuit output. The change in the light signal received by the infrared receiving diode U3 will change the gate voltage of the MOSFET Q1, thereby controlling the MOSFET Q1 to turn on or off, realizing the change of VOUT level.

10. The automatically sensing push-pull box structure according to claim 1, characterized in that, The base (2) and the drawer (1) are slidably connected by a slide rail assembly (5).

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