CN2695408Y - Device for opening lid of garbage can - Google Patents

Abstract

The utility model relates to a garbage storage device, in particular to a garbage bin lid opening device, which comprises a drive circuit, a motor and a transmission gear set, the motor, the transmission gear set and the bucket cover are sequentially connected by transmission, and the drive circuit is electrically connected to the motor. The key point of the structure is that it also includes a counting device, which includes a counter, a reference device and a comparison device, wherein the rotating shaft of the motor is electrically connected to the counter, and the counter and the reference device are respectively connected to the two comparison input terminals of the comparison device, and the trigger of the comparison device The output end is electrically connected with the motor through the drive circuit. The advantage is that the counting device is used to determine the number of turns of the motor each time it works, so that the opening or closing range of the lid can be determined each time, and the opening range of the lid is prevented from being affected by the power supply voltage, so that the lid will not be damaged. Too large a switch will cause the motor to stall, or not enough switch range will cause the inconvenience of throwing garbage.

Description

Garbage can opening device

technical field

The utility model relates to a garbage storage device, in particular to a garbage bin cover opening device.

Background technique

The garbage can lid opening device in the prior art includes a delay circuit, a drive circuit, a motor and a transmission gear set, the motor, the transmission gear set and the lid of the garbage can are sequentially connected by transmission, and the delay circuit is electrically connected to the motor through the drive circuit . When the delay circuit is triggered and starts timing, the drive circuit drives the motor to drive the transmission gear set to rotate, thereby opening or closing the bucket lid. Among them, the working time of the motor (that is, the delay time of the delay circuit) is determined according to the average value of the power supply voltage as a reference calculation value. Once the average value of the power supply is determined, the working time of the motor is also determined, and the motor’s The rotation speed is proportional to its power supply voltage. Therefore, in the same working time, the higher the power supply voltage, the faster the motor’s rotation speed and the more rotations, and the larger the range of the lid switch; the lower the power supply voltage, the slower the motor’s rotation speed. , The number of turns that rotates is few, and the range of bung lid switch is just little.

Its disadvantage is that in the same working time, the switching range of the barrel lid is affected by the power supply voltage. The power supply of the motor for the trash can generally adopts an ordinary battery, and its voltage will change with the time of use. When the battery is first used, the voltage is high, so that after the lid is opened or closed to the maximum, the motor is energized, causing the motor to stall, which consumes power and affects the performance of the motor; when the battery is used for a period of time, The low voltage makes it impossible to open the lid to a predetermined level, causing inconvenience in throwing garbage.

Invention composition

The purpose of the utility model is to overcome the deficiencies in the prior art and provide a trash can lid opening device which can make the width of the lid switch not affected by the power supply voltage.

The purpose of this utility model is achieved by the following approach:

The device for opening the lid of the trash can includes a drive circuit, a motor, and a transmission gear set. The motor, the transmission gear set, and the lid are sequentially connected by transmission. The drive circuit is electrically connected to the motor. The key point of its structure is that it also includes a counting device. The counting device It includes a counter, a reference device and a comparison device, wherein the rotating shaft of the motor is electrically connected to the counter, the counter and the reference device are respectively connected to two comparison input terminals of the comparison device, and the trigger output terminal of the comparison device is electrically connected to the motor through a drive circuit.

The counter is used to count the number of turns of the motor shaft, and the comparison device is used to compare the counted number of turns with the reference value in the reference device. When the counted number of turns is equal to the reference value, the comparison device will send out a trigger device to trigger the drive circuit , thus closing the drive circuit to stop the motor from rotating. Therefore, the counting device can accurately control the number of rotations of the motor each time, so that the lid will not be opened and closed too much to cause the motor to stall, or the opening and closing range will not be insufficient to cause the inconvenience of throwing garbage. If the number of turns that the motor rotates each time is the same, then regardless of the speed of the motor, the amplitude of each opening and closing of the bucket lid will be the same. Therefore, the utility model avoids the influence of the power supply voltage on the switching amplitude of the bung by controlling the number of rotations of the motor.

The counter can be further specified as the following options:

The counter includes a magnet, a magnetic switch and an arithmetic unit. The magnet is installed on the rotating shaft of the motor and magnetically connected with the magnetic switch. The magnetic switch is electrically connected with the input terminal of the comparison device through the arithmetic unit.

When the motor starts to rotate, it will drive the magnet to rotate together, and the magnet will approach the magnetic switch once every time it rotates. At this time, the magnetic switch will be triggered by the magnetic force of the magnet and send a counting pulse to the calculator for accumulation. Just compare it once with the reference value of the reference device in the comparison device. After reaching the reference value, the comparison device sends a driving signal to stop the motor, and the arithmetic unit will also be cleared to wait for the next cumulative calculation.

The magnet can be further specifically installed on any gear in the transmission gear set connected to the motor shaft.

Because the rotation area of the gear is larger than the motor shaft, it prevents the magnet from being too close to the magnetic switch to cause misoperation, resulting in too small opening range of the bucket lid.

There may be more than one magnet evenly distributed on the gear. In order to increase the number of counting and reduce the large error caused by misoperation.

The counter can also include a cam, a travel switch and an arithmetic unit. The cam is installed on the rotating shaft of the motor and is in contact with the travel switch. The travel switch is electrically connected to the input end of the comparison device through the arithmetic unit.

The rotation of the motor will drive the cam to rotate together. According to the special structure of the cam, when the cam rotates one circle, it will touch the travel switch once, so that the travel switch will send a counting pulse to the calculator, and accumulate in the calculator. After the value reaches the reference value, the motor stops rotating and the arithmetic unit is reset to zero.

In summary, the utility model has the advantages of: using the counting device to determine the number of turns the motor rotates each time, so that the opening or closing range of the lid can be determined each time, so that regardless of the speed of the motor, the lid The magnitude of each opening is the same. The counting device prevents the opening range of the lid from being affected by the power supply voltage, but can precisely control the number of rotations of the motor each time, so that the lid will not be too large to switch and cause the motor to stall, or the switching range will not be insufficient. And cause the inconvenience of throwing away rubbish.

Description of drawings

Fig. 1 shows the use structural representation of embodiment 1 described in the utility model;

Figure 2 is a schematic diagram of an enlarged structure marked as 1A in the accompanying drawing 1;

Fig. 3 shows the schematic diagram of the circuit frame of the trash can opening device described in the utility model;

Fig. 4 shows the circuit diagram of the dustbin lid opening device described in the utility model;

Fig. 5 shows the schematic diagram of the use of the preferred embodiment of the utility model;

Fig. 6 is a schematic diagram of an enlarged structure marked as 1B in accompanying drawing 5;

Below in conjunction with embodiment the utility model is described further.

specific embodiment

Example 1:

Referring to accompanying drawing 1, dustbin lid opening device, it is installed in the upper staving rear portion of dustbin, is connected with bucket lid 3 transmissions. The specific structure of the lid opening device is shown in Figure 2. The garbage bin lid opening device includes a drive circuit 5, a motor 1, a transmission gear set 2 and a counting device 4, wherein the motor 1, the transmission gear set 2 and the bucket lid 3 are sequentially connected by transmission. , the counting device 4 is electrically connected to the motor 1 through the drive circuit 5 .

Referring to accompanying drawing 3, counting device 4 comprises counter 41, reference device 42 and comparison device 43, wherein, the rotating shaft of motor 1 is electrically connected with counter 41, and counter 41 and reference device 42 are respectively connected with two comparison input terminals of comparison device 43. The trigger terminal of the comparison device 43 is electrically connected to the motor 1 through the drive circuit 5 . Whether it is to open or close the cover, the counter will count the number of rotations of the motor 1 rotating shaft, and the comparator 43 is used to compare the counted number of turns with the reference value 10 circles in the reference device 42, when the counted number of turns and the reference value When the 10 turns are equal, the comparison device 43 will send a trigger signal to close the drive circuit, so that the motor 1 stops rotating. Under the control of the counting device, the motor rotates 10 times to control the swing of the lid at an absolute value of up to 80 degrees. When the lid is opened, the motor and the counting device will swing the lid from 0 to 80 degrees, and the lid will Continue to swing for 5 degrees under the inertia of swinging, reaching an opening range of 85 degrees; when closing the lid, the action of the motor and the action of the counting device will swing the lid from 85 degrees to 5 degrees, and then the lid will continue to swing under the inertia of swinging 5 degrees to close the lid completely.

Referring to accompanying drawing 4, and in conjunction with accompanying drawing 2, counter 41 comprises magnet 411, magnetic switch 412 and arithmetic unit, and magnet 411 is installed in the gear tooth on the rotating shaft of motor 1, and magnetic switch 412 is the circuit diagram shown in accompanying drawing 4 S3, the arithmetic unit, the reference device and the comparison device are IC3 in the circuit diagram, the chip model is CF745, the trigger output terminal of the comparison device is the RA0 pin and RA1 pin of IC3, and Q2~Q5 form the drive circuit, the motor is M, the above The connection relationship is shown in Figure 4.

When the magnet is close to the magnetic switch S3, it enters the chip through the third pin of IC3 for calculation and comparison. After reaching the reference value, it sends a trigger signal to RA0 and RA1 to clear them, thereby triggering the drive circuit and turning off the drive. circuit, the motor will also stop turning. For other circuit descriptions of the accompanying drawing 4, please refer to another patent document, that is, the patent number is: 012725765, the control circuit of the infrared induction automatic lid opening container.

The undescribed part of the utility model is the same as the prior art.

Best practice:

Referring to accompanying drawings 5 and 6, the counter 41 includes a cam 414, a travel switch and an arithmetic unit. The cam 414 is installed on the rotating shaft of the motor 1, touches the travel switch during rotation, and is electrically connected with the arithmetic unit. Travel switch represents S3 among the same accompanying drawing 4 on circuit diagram.

The parts not described in this embodiment are the same as those in Embodiment 1.

Claims (5)

1. Garbage bin lid opening device, including drive circuit (5), motor (1) and transmission gear set (2), motor (1), transmission gear set (2) and bucket lid (3) are sequentially connected by transmission, driving The circuit (5) is electrically connected with the motor (1), and is characterized in that it also includes a counting device (4), and the counting device (4) includes a counter (41), a reference device (42) and a comparison device (43), wherein The rotating shaft of the motor (1) is electrically connected to the counter (41), the counter (41) and the reference device (42) are respectively connected to the two comparison input terminals of the comparison device (43), and the trigger output terminal of the comparison device (43) passes through the drive circuit It is electrically connected with the motor (1). 2. The garbage bin lid opening device according to claim 1, characterized in that the counter (41) includes a magnet, a magnetic switch and an arithmetic unit, the magnet is installed on the rotating shaft of the motor (1), and is magnetically connected with the magnetic switch, and the magnetic The switch is electrically connected with the input terminal of the comparison device through the arithmetic unit. 3. The device for opening the lid of the trash can according to claim 2, characterized in that the magnet is installed on any gear in the transmission gear set connected to the rotating shaft of the motor (1). 4. The garbage bin lid opening device according to claim 2, characterized in that there are more than one magnet evenly distributed on the rotating shaft of the motor (1). 5. The garbage can lid opening device according to claim 1, characterized in that the counter (41) includes a cam, a travel switch and an arithmetic unit, the cam is installed on the rotating shaft of the motor (1) and is in contact with the travel switch, The travel switch is electrically connected with the input end of the comparator (43) through an arithmetic unit.

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