Dining table rotating disc control system

Abstract

The utility model discloses a dining table rotating disc control system, which relates to catering utensils and comprises a main control unit, an infrared transmitting tube and an infrared receiving tube. The other end of the infrared transmitting tube is grounded through a third resistor, two output ends of the infrared receiving tube are electrically connected with base electrodes of a first triode and a third triode in a one-to-one correspondence mode respectively, and collector electrodes of the first triode and the third triode are electrically connected with a power input end at the same time. Emitting electrodes of the first triode and the third triode are electrically connected with the main control unit; the infrared transmitting tube and the infrared receiving tube are both installed in a dining table, the infrared transmitting tube and the infrared receiving tube are arranged in a horizontal correlation mode, a coded disc path gap is formed between the infrared transmitting tube and the infrared receiving tube, a coding disc is fixedly installed below the rotating disc, and the part, corresponding to the coded disc path gap, of the coding disc is located in the coded disc path gap. According to the utility model, the problem that the infrared transceiver module is easy to lose efficacy due to the influence of foreign objects is avoided, and the overall aesthetic property of the dining table is greatly improved.

Description

Technical Field

[0001] This utility model relates to catering utensils, and more specifically, to a rotating control system for a dining table. Background Technology

[0002] To facilitate easy access to food when dining with multiple people, rotating tables are the preferred choice. A rotating table typically adds a turntable to a traditional table; rotating the turntable rotates the food trays to their desired positions. In existing technology, publication number CN219781922U discloses an infrared automatic rotating plate. An infrared reflective strip is installed inside the movable plate of the rotating plate. An infrared transceiver module in the drive circuit transmits infrared light signals to the reflective strip and receives infrared light signals reflected back from it. The main control module controls the start, stop, speed, and direction of the drive motor based on the received infrared light signals via a motor drive module. In practical applications, diners sitting around the rotating plate control the rotation of the movable plate, thereby altering the infrared light signal transmitted to the main control module, effectively providing indirect control commands. This allows each diner to control the movable plate. In this existing technology, the automatic forward and reverse rotation recognition of the rotating plate is mainly achieved through the infrared transceiver module in conjunction with the reflective strip. The reflective strips are arranged in alternating black and white patterns. The white strips reflect infrared light, while the black strips absorb infrared light, thus forming an encoding disc that enables forward and reverse rotation recognition and control of the drive motor.

[0003] However, regarding its specific implementation and application, there are still some problems in its design and application, as follows:

[0004] Firstly, structurally, the reflective strip is installed on the edge of the rotating plate, which means that its infrared transceiver module and related control circuits need to protrude from the dining table, which is not aesthetically pleasing.

[0005] Secondly, because the infrared transceiver module and the reflector strip are arranged vertically, and the infrared transceiver module and related control circuits protrude from the dining table, they are more easily blocked by foreign objects during use. For example, if diners intentionally or unintentionally put in foreign objects, food residues, or oil stains to contaminate and block the infrared transceiver module, the forward and reverse rotation recognition of the rotating plate will fail, and the drive motor cannot be controlled by rotating the rotating plate. Utility Model Content

[0006] The technical problem this invention aims to solve is to address the shortcomings of existing technologies by providing a rotating dining table control system that avoids the problem of infrared transceiver modules failing due to external interference, thus greatly improving the overall aesthetics of the dining table.

[0007] This utility model discloses a rotating dining table control system, comprising a main control unit and an operating unit and a motor drive unit electrically connected thereto. The main control unit is electrically connected to a motor via the motor drive unit, and the motor drives the rotating table through a transmission mechanism. The system also includes an infrared emitting diode, an infrared receiving diode, a first transistor, and a third transistor. One end of the infrared emitting diode is electrically connected to a power input terminal, and the other end is grounded through a third resistor. The input terminal of the infrared receiving diode is electrically connected to the power input terminal, and the two output terminals of the infrared receiving diode are respectively connected to the first transistor and the third transistor. The bases of the transistors are electrically connected in a one-to-one correspondence. The collectors of the first and third transistors are simultaneously electrically connected to the power input terminal. The emitters of the first and third transistors are electrically connected in a one-to-one correspondence to the two signal acquisition terminals of the main control unit. The infrared emitting tube and the infrared receiving tube are both installed in the dining table, and the infrared emitting tube and the infrared receiving tube are arranged horizontally opposite each other. The infrared emitting tube and the infrared receiving tube are provided with a code disk path gap. An encoding disk is fixedly installed below the rotating disk, and the part of the encoding disk corresponding to the code disk path gap is located in the code disk path gap.

[0008] Preferably, the base of the first transistor is grounded through a first resistor, and the emitter of the first transistor is grounded through a second resistor.

[0009] Preferably, the base of the third transistor is grounded through a fourth resistor, and the emitter of the third transistor is grounded through a fifth resistor.

[0010] Preferably, the dining table turntable control system also includes a dining table turntable rotation reminder unit.

[0011] Preferably, the rotating tray reminder unit includes a buzzer, a fourth transistor, and a second diode; the base of the fourth transistor is electrically connected to another output terminal of the main control unit, the collector of the fourth transistor is electrically connected to one end of the buzzer and the anode of the second diode, the cathode of the second diode and the other end of the buzzer are electrically connected to the power input terminal, and the base of the fourth transistor is electrically connected to the power input terminal through a sixth resistor.

[0012] Preferably, the operation unit includes a forward control button, a reverse control button, and a pause button; the forward control button, the reverse control button, and the pause button are electrically connected to the three control terminals of the main control unit respectively.

[0013] Preferably, the rotating table control system further includes a remote control receiver unit.

[0014] Preferably, the rotating table control system further includes a battery and a charging unit; the positive terminal of the battery is electrically connected to the power input terminal, the negative terminal of the battery serves as the ground terminal, and the battery is electrically connected to the charging unit.

[0015] Preferably, the positive terminal of the battery is electrically connected to the power input terminal via a first switch.

[0016] Preferably, the transmission mechanism includes a reducer, a gear, and a gear ring; the reducer is installed in the dining table, the drive end of the motor is connected to the input end of the reducer, the gear is installed on the output end of the reducer, the gear ring is rotatably installed in the dining table, and the rotating disk is fixed on the gear ring.

[0017] Beneficial effects

[0018] The advantages of this utility model are as follows: This utility model aims to solve the shortcomings of the existing rotating disc forward and reverse recognition structure of rotating dining tables. Through a uniquely designed forward and reverse recognition unit mainly composed of infrared emitting tubes, infrared receiving tubes and encoding discs, it avoids the problem of infrared transceiver modules being easily affected by external objects and thus failing in a horizontally directed manner. At the same time, since the forward and reverse recognition unit of this design is located in the dining table, it achieves good concealment and greatly improves the overall aesthetics of the dining table. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the circuit structure of the main control unit, operation unit, and rotating tray reminder unit of the present invention;

[0020] Figure 2 This is a schematic diagram of the circuit structure of the motor drive unit of this utility model;

[0021] Figure 3 This is a schematic diagram of the forward / reverse identification unit circuit structure of this utility model;

[0022] Figure 4 This is a schematic diagram of the charging unit circuit structure of this utility model;

[0023] Figure 5 This is a schematic diagram of the circuit structure of the remote control receiving unit of this utility model;

[0024] Figure 6 This is a three-dimensional structural diagram of the dining table with a rotating tray according to the present invention;

[0025] Figure 7 This is a schematic diagram of the internal structure of the dining table of this utility model;

[0026] Figure 8 This is an exploded view of the dining table and rotating tray of this utility model;

[0027] Figure 9 for Figure 8 A magnified structural diagram of point A in the middle. Detailed Implementation

[0028] The present invention will be further described below with reference to embodiments, but this does not constitute any limitation on the present invention. Any limited modifications made by any person within the scope of the claims of the present invention are still within the scope of the claims of the present invention.

[0029] See Figures 1-9 This utility model discloses a rotating dining table control system, comprising a main control unit and an operating unit, a motor drive unit, a forward / reverse rotation recognition unit, a rotating dining table rotation reminder unit, and a remote control receiving unit electrically connected thereto. The main control unit controls a motor M via the motor drive unit, and the motor M drives the rotating table 2 via a transmission mechanism. Specifically, the transmission mechanism includes a reducer 3, a gear 4, and a gear ring 5. The reducer 3 is installed in the dining table 1, the drive end of the motor M is connected to the input end of the reducer 3, the gear 4 is installed on the output end of the reducer 3, the gear ring 5 is rotatably installed in the dining table 1, and the rotating table 2 is fixed to the gear ring 5, thus realizing the rotation of the rotating table 2 by the driving action of the motor M.

[0030] The control terminal of the main control unit is electrically connected to the operation unit, which allows control of the rotation direction or start / stop of motor M. The signal acquisition terminal of the main control unit is electrically connected to the forward / reverse rotation recognition unit, which effectively acquires the forward / reverse rotation status signal of the rotating disk 2. Based on this signal, the main control unit controls the forward or reverse rotation of motor M via the motor drive unit. The output terminal of the main control unit is electrically connected to the input terminal of the rotating disk rotation reminder unit. When the main control unit acquires and identifies a change in the rotation direction of the rotating disk 2, the rotating disk rotation reminder unit provides a corresponding prompt to remind the diners.

[0031] It should be noted that the method of controlling the motor's forward or reverse rotation by the rotation direction of the rotating disc, as described in this article, is existing technology and is widely used in automatically rotating dining tables. This invention does not improve upon this control technology. This invention aims to address the shortcomings of existing forward / reverse rotation recognition structures in rotating dining tables. Through a uniquely designed forward / reverse rotation recognition unit mainly composed of an infrared transmitter D1, an infrared receiver D2, and an encoder disc 6, it uses a horizontal beam-to-beam method to avoid the problem of infrared transceiver modules easily failing due to external interference. Furthermore, since the forward / reverse rotation recognition unit is located within the dining table 1, it achieves excellent concealment, greatly improving the overall aesthetics of the table. The circuit structure of the control system for this invention will be described below.

[0032] In this embodiment, the circuit structure of the main control unit is as follows: Figure 1 As shown, the main control unit mainly includes a first chip U1 and a first capacitor C1. The model of the first chip U1 is STC8G1k08A. The operation unit includes a forward control button S2, a reverse control button S3, and a pause button S4. The forward control button S2, the reverse control button S3, and the pause button S4 are electrically connected to the three pins P3.3 to P3.5 of the first chip U1, respectively, and are used to control the forward, reverse, and stop operation of the motor M. For example, with clockwise as the forward direction, pressing the reverse control button S3 will drive the rotating disk 2 to rotate in the opposite direction. Pressing the pause button S4 will stop the motor M from rotating.

[0033] like Figure 2 The diagram shows the drive circuit for motor M, which mainly consists of eleventh resistor R11, twelfth resistor R12, thirteenth resistor R13, fourteenth resistor R14, ninth capacitor C9, tenth capacitor C10, and motor driver chip P4. The signals output from pins P1.7 and P5.4 of the first chip U1 are fed to the twelfth resistor R12, thirteenth resistor R13, eleventh resistor R11, and fourteenth resistor R14 for current limiting, and then to pins 1 and 2 of the motor driver chip P4. After signal amplification by the motor driver chip P4, the signals are output to pins 5, 6, 7, and 8, and finally filtered by the ninth capacitor C9 before being output to motor M, thus enabling motor M to run and driving the rotating disk 2 to rotate.

[0034] like Figure 3As shown, the forward / reverse recognition unit includes an infrared emitting diode D1, an infrared receiving diode D2, a first transistor Q1, and a third transistor Q3. The infrared emitting diode D1 is model IR908-7C; the infrared receiving diode D2 is model PT2559B / L2 / H2. One end of the infrared emitting diode D1 is electrically connected to the power input terminal VCC, and the other end is grounded through a third resistor R3. The power input pin of the infrared receiving diode D2 is electrically connected to the power input terminal VCC. The two output terminals of the infrared receiving diode D2 are respectively electrically connected to the bases of the first transistor Q1 and the third transistor Q3. The collectors of the first transistor Q1 and the third transistor Q3 are also electrically connected to the power input terminal VCC. The emitter of the first transistor Q1 is connected to pin P3.2 of the first chip U1, and the emitter of the third transistor Q3 is connected to pin P3.7 of the first chip U1. The base of the first transistor Q1 is grounded through the first resistor R1, and the emitter of the first transistor Q1 is grounded through the second resistor R2. The base of the third transistor Q3 is grounded through the fourth resistor R4, and the emitter of the third transistor Q3 is grounded through the fifth resistor R5. Infrared emitting diode D1 and infrared receiving diode D2 are both installed in the dining table 1, and are arranged horizontally opposite each other. A code disk path gap 7 is provided between the infrared emitting diode D1 and the infrared receiving diode D2. An encoding disk 6 is fixedly installed below the rotating disk 2, and the portion of the encoding disk 6 corresponding to the code disk path gap 7 is located within the code disk path gap 7. The combination of the above circuit and the encoding disk 6 constitutes a simple and practical encoder circuit. Through the horizontal opposite beam of the infrared devices and the fact that the encoding disk 6 is completely installed below the rotating disk 2, the control system is hidden, improving aesthetics. It also solves the problem of the rotating disk's forward and reverse rotation recognition failing due to obstruction by external objects. As for the specific forward and reverse rotation recognition process of the aforementioned forward and reverse rotation recognition unit, it is consistent with the principle of encoder recognition of motor forward and reverse rotation in existing technology, so it will not be described in detail here.

[0035] In this embodiment, the design of the encoding disk 6 is as follows: Figure 8 As shown, it adopts a ring-shaped design, and in the ring ( Figure 8 Multiple evenly spaced, vertically extending code teeth are arranged on the lower end face of the (not visible ring) to form the encoding disk 6. To prevent the encoding disk 6 from being obstructed during rotation, an open-top groove is designed near the edge of the dining table 1, and the infrared emitting tube D1 and the infrared receiving tube D2 are installed in the groove, as shown below. Figure 9 As shown, when the rotating disk 2 rotates, the code teeth of the encoder disk 6 can pass through the code disk path gap 7. Moreover, this design has another advantage: because the code disk path is between the infrared emitting tube D1 and the infrared receiving tube D2, the encoder disk 6 can form a barrier between the infrared emitting tube D1 and the infrared receiving tube D2, thereby more effectively preventing foreign objects from entering between the infrared emitting tube D1 and the infrared receiving tube D2.

[0036] The rotating tray reminder unit designed in this embodiment includes a buzzer LS1, a fourth transistor Q4, and a second diode D2. The base of the fourth transistor Q4 is electrically connected to the P1.0 pin of the first chip U1. The collector of the fourth transistor Q4 is simultaneously connected to one end of the buzzer LS1 and the anode of the second diode D2. The cathode of the second diode D2 and the other end of the buzzer LS1 are simultaneously connected to the power input terminal VCC. The base of the fourth transistor Q4 is electrically connected to the power input terminal VCC through a sixth resistor R6. The signal sent through the P1.0 pin of the first chip U1 is sent to the base of the fourth transistor Q4. When P1.0 is high, the fourth transistor Q4 is saturated and conducting, and the buzzer LS1 emits a sound. When P1.0 is low, the transistor is cut off, and the buzzer LS1 does not emit a sound.

[0037] The rotating dining table control system of this embodiment also includes a battery BT1 and a charging unit. The positive terminal of battery BT1 is electrically connected to the power input terminal VCC, the negative terminal of battery BT1 serves as the ground terminal, and battery BT1 is electrically connected to the charging unit. The rotating dining table control system uses a built-in power supply, eliminating the need for AC power and making it safer to use. The charging unit provides a charging interface for battery BT1, improving its practicality. Furthermore, the positive terminal of battery BT1 is electrically connected to the power input terminal VCC via a first switch S1. The first switch S1 serves as the master switch for the rotating dining table control system, and is embedded in the side of the dining table 1, controlling the on / off state of the system circuit.

[0038] like Figure 4 As shown, the charging unit comprises a USB interface P3, a ninth resistor R9, a first indicator light DS1, a second indicator light DS2, a power processing chip P2, a tenth resistor R10, a first switch S1, a fifth capacitor C5, a sixth capacitor C6, a seventh capacitor C7, and an eighth capacitor C8. External power is input via the charging cable through the USB interface P3, and after current limiting protection by the ninth resistor R9, it is supplied to the eighth pin of the power processing chip P2. Then, the power is supplied to the battery BT1 via the indicator light circuit composed of DS1, DS2, R7, and R8, indicating a charging status. The power is then output from the fifth pin of the power processing chip P2, filtered by C7 and C8, and used to charge the battery BT1. Since this charging unit is widely used in lithium battery charging, it will not be discussed further. The battery used in this embodiment is a lithium battery.

[0039] To facilitate the rotation control of the rotating disk 2, this embodiment also provides a remote control receiving unit, and uses the currently mature 433 remote control receiving circuit, that is, a 433MHz wireless transmitter and receiver module to realize the remote control function of the remote control receiving unit. The specific circuit is as follows: Figure 5As shown. Since the 433 remote control receiver circuit is existing technology, it will not be discussed further in this paper. Through the application of the remote control receiver unit, it can be matched with a corresponding remote control, realizing remote control of the operation of motor M.

[0040] The working principle of this utility model is as follows: When the rotating tray 2 of the dining table 1 needs to rotate, the diner can manually rotate the rotating tray 2 to change its direction. Since this utility model does not improve the control method of this part, it will not be discussed further. However, the diner can also control the rotation of the rotating tray 2 using buttons. Specifically, the motor M is controlled to rotate via the forward control button S2 or the reverse control button S3. When the forward control button S2 is pressed, the P3.3 pin of the first chip U1 is pulled low from a high level. Due to the change in level, the first chip U1 sends a control signal to the motor drive unit, thereby controlling the motor M to drive the rotating tray 2 to rotate forward. To stop, the pause button S4 is pressed. After the level of P3.5 of the first chip U1 changes, the first chip U1 stops outputting signals to the motor drive unit, thereby stopping the motor M. If the reverse control button S3 is pressed while the motor M is rotating forward, the P3.4 pin of the first chip U1 is pulled from high level to low level. Due to the change in level, the first chip U1 first sends a control signal to the rotating tray reminder unit, causing the buzzer LS1 to sound, thereby reminding the diner that the rotating tray 2 is about to change direction. The first chip U1 also sends a control signal to the motor drive unit to control the motor M to rotate in the reverse direction, so that the rotating tray 2 changes direction.

[0041] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several modifications and improvements can be made without departing from the structure of the present utility model, and these will not affect the implementation effect of the present utility model or the practicality of the patent.

Claims

1. A rotating dining table control system, comprising a main control unit and an operating unit and a motor drive unit electrically connected thereto; the main control unit is electrically connected to a motor (M) via the motor drive unit, and the motor (M) drives the rotating disc (2) via a transmission mechanism, characterized in that, It also includes an infrared emitting diode (D1), an infrared receiving diode (D2), a first transistor (Q1), and a third transistor (Q3); one end of the infrared emitting diode (D1) is electrically connected to the power input terminal (VCC), and the other end of the infrared emitting diode (D1) is grounded through a third resistor (R3). The power input pin of the infrared receiving diode (D2) is electrically connected to the power input terminal (VCC), and the two output terminals of the infrared receiving diode (D2) are respectively electrically connected to the bases of the first transistor (Q1) and the third transistor (Q3). The collectors of the first transistor (Q1) and the third transistor (Q3) are simultaneously connected to the power input terminal. The first transistor (Q1) and the third transistor (Q3) are electrically connected to the two signal acquisition terminals of the main control unit respectively. The infrared emitting tube (D1) and the infrared receiving tube (D2) are installed in the dining table (1) and are arranged horizontally opposite each other. The infrared emitting tube (D1) and the infrared receiving tube (D2) are provided with a code disk path gap (7). An encoding disk (6) is fixedly installed below the rotating disk (2) and the part of the encoding disk (6) corresponding to the code disk path gap (7) is located in the code disk path gap (7).

2. The dining table rotating tray control system according to claim 1, characterized in that, The base of the first transistor (Q1) is grounded through the first resistor (R1), and the emitter of the first transistor (Q1) is grounded through the second resistor (R2).

3. The dining table rotating tray control system according to claim 1, characterized in that, The base of the third transistor (Q3) is grounded through the fourth resistor (R4), and the emitter of the third transistor (Q3) is grounded through the fifth resistor (R5).

4. A dining table rotating tray control system according to claim 1, characterized in that, The dining table rotating tray control system also includes a rotating tray rotation reminder unit.

5. A dining table rotating tray control system according to claim 4, characterized in that, The rotating tray reminder unit includes a buzzer (LS1), a fourth transistor (Q4), and a second diode (D2). The base of the fourth transistor (Q4) is electrically connected to another output terminal of the main control unit. The collector of the fourth transistor (Q4) is simultaneously electrically connected to one end of the buzzer (LS1) and the anode of the second diode (D2). The cathode of the second diode (D2) and the other end of the buzzer (LS1) are simultaneously electrically connected to the power input terminal (VCC). The base of the fourth transistor (Q4) is electrically connected to the power input terminal (VCC) through a sixth resistor (R6).

6. A rotating dining table control system according to claim 1, characterized in that, The operation unit includes a forward control button (S2), a reverse control button (S3), and a pause button (S4); the forward control button (S2), the reverse control button (S3), and the pause button (S4) are electrically connected to the three control terminals of the main control unit respectively.

7. A rotating dining table control system according to claim 1, characterized in that, The rotating table control system also includes a remote control receiver unit.

8. A dining table rotating tray control system according to claim 1, characterized in that, The rotating table control system also includes a battery (BT1) and a charging unit; the positive terminal of the battery (BT1) is electrically connected to the power input terminal (VCC), the negative terminal of the battery (BT1) serves as the ground terminal, and the battery (BT1) is electrically connected to the charging unit.

9. A dining table rotating tray control system according to claim 8, characterized in that, The positive terminal of the battery (BT1) is electrically connected to the power input terminal (VCC) via the first switch (S1).

10. A rotating dining table control system according to claim 1, characterized in that, The transmission mechanism includes a reducer (3), a gear (4) and a gear ring (5); the reducer (3) is installed in the dining table (1), the drive end of the motor (M) is connected to the input end of the reducer (3), the gear (4) is installed on the output end of the reducer (3), the gear ring (5) is rotatably installed in the dining table (1), and the rotating disk (2) is fixed on the gear ring (5).

Images