CN210095137U

CN210095137U - Drawer opening mechanism adaptive to load and capable of automatically adjusting output

Info

Publication number: CN210095137U
Application number: CN201920630255.4U
Authority: CN
Inventors: 王建伟; 荆涛; 于谦; 邓佳骏
Original assignee: Jiangsu Leili Motor Co Ltd
Current assignee: Jiangsu Leili Motor Co Ltd
Priority date: 2019-05-06
Filing date: 2019-05-06
Publication date: 2020-02-21
Anticipated expiration: 2029-05-06

Abstract

The utility model discloses a drawer opening mechanism of adaptation load automatic adjustment output, including last cap, last casing and lower casing, it is provided with mechanism control circuit board to go up between cap and the last casing, internal motor and push rod subassembly that is provided with of inferior valve, the motor passes through drive assembly drive push rod subassembly and rotates, be provided with motor control unit on the motor, motor control unit is including the motor control circuit board of fixing in the inferior valve and fix the epaxial magnetic ring of motor rotation, the last hall element circuit that is used for detecting magnetic ring rotation direction and rotational speed that is provided with of motor control circuit board, hall element circuit links to each other with mechanism control circuit board. The utility model provides a drawer opening mechanism of adaptation load automatic adjustment output, it can be according to the weight automatically regulated drawer speed of opening of drawer, makes the drawer remain smooth-going throughout the process of opening.

Description

Drawer opening mechanism adaptive to load and capable of automatically adjusting output

Technical Field

The utility model relates to a drawer opening mechanism of adaptation load automatic adjustment output belongs to electronic supplementary drawer field of opening.

Background

Currently, cabinet drawers and the like have many auxiliary opening and closing mechanisms, both electrical and mechanical. Mechanical systems generally provide only an auxiliary mechanical power at the beginning or end of the opening or closing phase of the drawer, which power is generally output by the elastic element and the air cushion element and absorbed by the impact.

The typical electric drawer opening mechanism is driven by a direct current brush motor, and the characteristics of the brush motor determine that the rotating speed and the load are in an inverse proportion at a rated voltage. Therefore, when one set of mechanism drives different drawers, the ejection speed of the mechanism can also change according to the weight of different drawers and the load of internal articles, and the rotation speed of the motor can be reduced due to the large load of the heavier drawer on the motor, so that the ejection speed of the drawer is relatively low. In order to make the drawer opening effect more excellent, the general manufacturer needs to improve the performance of the motor. However, when the performance of the motor is improved, if a user installs the mechanism in a set of relatively light drawers or the drawers have no articles, the motor load is reduced, so that the rotating speed is relatively high, and the ejection speed of the drawer is relatively high. This can cause the drawer to pop up relatively suddenly and even bump into the user.

In order to balance the difference, some manufacturers can arrange an adjusting switch on an electric control board of the mechanism, and the adjusting switch is respectively in full-power operation and half-power operation, so that when the drawer is heavy, an installer can adjust the drawer to be in full-power operation, and otherwise, when the drawer is light, the installer can adjust the drawer to be in half-power operation. Therefore, the weight of the drawer can be changed along with the amount of articles put into the drawer in practical use, and a user cannot toggle a switch arranged in the drawer cabinet body at any time to adjust the opening smoothness of the drawer, so that a mechanism capable of automatically adapting to the load of the drawer to change the output power of the motor is needed.

Disclosure of Invention

The utility model aims to solve the technical problem that, overcome prior art not enough, provide a drawer opening mechanism who adapts to load automatic adjustment output, it can be according to the weight automatically regulated drawer speed of opening of drawer, makes the drawer remain smoothly throughout the process of opening.

In order to solve the technical problem, the technical scheme of the utility model is that:

the utility model provides a drawer opening mechanism of adaptation load automatic adjustment output, includes cap, last casing and lower casing, it is provided with mechanism control circuit board to go up between cap and the last casing, internal motor and the push rod subassembly of being provided with of inferior valve, the motor passes through transmission assembly drive push rod subassembly and rotates, be provided with the machine control part on the motor, the machine control part is including the machine control circuit board of fixing in the casing down and fix the magnetic ring in the motor rotation epaxial, be provided with the hall element circuit who is used for detecting magnetic ring rotation direction and rotational speed on the machine control circuit board, hall element circuit links to each other with mechanism control circuit board.

Further, be provided with on the mechanism control circuit board and be used for the pivoted potentiometre of starter motor, push rod subassembly links to each other with the potentiometre through starting signal transmission subassembly.

Further, the push rod subassembly includes drive gear, the piece that resets, torsional spring, push rod and jack catch, the jack catch setting is on drive gear and upwards extends, the push rod suit is on the jack catch, set up the jack catch groove on the piece that resets, the piece that resets passes through jack catch groove chucking on the jack catch, the torsional spring sets up between piece and the push rod that resets, the one end and the push rod of torsional spring are connected, the other end and the piece that resets of torsional spring are connected, there is the clearance between push rod and the jack catch, the one end of push rod suit on the jack catch is provided with the start tooth.

Furthermore, the motor rotating shaft extends out of two ends of the motor, a rotating shaft gear is arranged at one end of the motor rotating shaft, and the other end of the motor rotating shaft is fixedly connected with the magnetic ring.

Furthermore, the transmission assembly is a gear pair, one end of the gear pair is meshed with a rotating shaft gear on a rotating shaft of the motor, and the other end of the gear pair is meshed with the transmission gear.

Further, the gear pair is formed by one or more reduction gears which are meshed in sequence.

Further, the starting signal transmission assembly comprises a starting gear and a driven rod, the starting gear is meshed with the starting teeth, and the driven rod is arranged on the starting gear and is inserted into a large semicircular hole in the potentiometer.

Further, the Hall element circuit is provided with two paths.

Further, the Hall element circuit comprises a Hall element, a pull-up resistor, a voltage regulator tube and a capacitor, wherein a pin 1 of the Hall element is connected with a power supply VCC, the capacitor for filtering and the voltage regulator tube for stabilizing the power supply are connected between the pin 1 of the Hall element and a power supply ground, a pin 2 of the Hall element is connected with the power supply ground, and a pin 3 of the Hall element is an output pin and is connected with the pull-up resistor so as to ensure the stability of the output high level.

Further, the hall elements comprise a first hall element and a second hall element, and an included angle of the first hall element and the second hall element on the motor control circuit board is 45 degrees.

Having adopted above-mentioned technical scheme, the utility model discloses a little control MCU unit of mechanism control panel is given with motor speed transmission to hall element circuit to real-time supervision and accommodate motor speed make push rod assembly release the drawer with a suitable output thrust, thereby guarantee the ride comfort that the drawer was opened.

Drawings

FIG. 1 is a diagram illustrating a state of the drawer opening mechanism of the present invention for automatically adjusting the output of the drawer according to the load;

FIG. 2 is a front view of the drawer opening mechanism of the present invention adapted to automatically adjust the output of the load;

FIG. 3 is an exploded view of FIG. 2;

fig. 4 is a front view of the push rod assembly of the present invention;

fig. 5 is a schematic view of the push rod assembly of the present invention cooperating with the start signal transmission assembly;

FIG. 6 is an exploded view of FIG. 4;

fig. 7 is a flow chart of the working state of the push rod assembly of the present invention;

fig. 8 is a schematic structural diagram of the motor of the present invention;

FIG. 9 is an exploded view of FIG. 8;

fig. 10 is a schematic structural diagram of the motor control circuit board of the present invention;

fig. 11 is a schematic structural diagram of the mechanism control circuit board of the present invention;

fig. 12 is a schematic circuit diagram of a hall element circuit according to the present invention;

fig. 13 is a waveform diagram of the orthogonal encoder of the present invention.

Detailed Description

In order that the present invention may be more readily and clearly understood, the following detailed description of the present invention is provided in connection with the accompanying drawings.

Fig. 1 is the usage state diagram of the present invention, there is a certain gap between the inner side of the cabinet 14 and the drawer 15, in the gap, the mounting bracket 13 is installed at one side of the inner side of the cabinet 14 main body, the relative height with the bottom of the cabinet 14 main body can be adjusted up and down, the drawer opening mechanism 12 is fixed on the mounting bracket 13, when the drawer 15 is not opened and is in the static state, the drawer 15 is attached to the drawer opening mechanism 12.

As shown in fig. 2 to 13, a drawer opening mechanism adapted to load and automatically adjusting output comprises an upper shell cover 1, an upper shell 2 and a lower shell 3, wherein a mechanism control circuit board 4 is arranged between the upper shell cover 1 and the upper shell 2, a motor 5 and a push rod assembly are arranged in the lower shell 3, the motor 5 drives the push rod assembly to rotate through a transmission assembly, a motor control part is arranged on the motor 5, the motor control part comprises a motor control circuit board 6 fixed in the lower shell 3 and a magnetic ring 52 fixed on a motor rotating shaft 51, a hall element circuit for detecting the rotating direction and the rotating speed of the magnetic ring 52 is arranged on the motor control circuit board 6, the hall element circuit is connected with the mechanism control circuit board 4, the motor rotates during the pushing process of the drawer, the hall element circuit receives the rotating signal of the magnetic ring 52 and provides a signal for a micro control MCU unit 43 on the mechanism control circuit board 4, the micro control MCU unit 43 compares the detected rotating speed with the preset motor rotating speed and then adjusts the input voltage of the motor, when the drawer and the article are heavy, the drawer is slowly opened, the motor rotating speed is lower than the preset rotating speed value, the motor control circuit board 6 controls the input voltage of the motor 5 to be increased, otherwise, the input voltage of the motor 5 is reduced until the detected motor rotating speed is equal to the preset rotating speed, and the push rod assembly pushes out the drawer by proper output thrust.

As shown in fig. 5 and 11, the mechanism control circuit board 4 is provided with a potentiometer 41 for starting the rotation of the motor 5, the push rod assembly is connected with the potentiometer 41 through a starting signal transmission assembly, the starting signal transmission assembly comprises a starting gear 9 and a driven rod 91, the starting gear 9 is meshed with the starting tooth 77, and the driven rod 91 is arranged on the starting gear 9 and is inserted into a large semicircular hole 42 on the potentiometer 41.

As shown in fig. 4 and 6, the push rod assembly includes a transmission gear 7, a reset plate 71, a torsion spring 72, a push rod 73 and a jaw 74, the jaw 74 is disposed on the transmission gear 7 and extends upward, the push rod 73 is sleeved on the jaw 74, the reset plate 71 is provided with a jaw slot 75, the reset plate 71 is clamped on the jaw 74 through the jaw slot 75, the torsion spring 72 is disposed between the reset plate 71 and the push rod 73, one end of the torsion spring 72 is connected with the push rod 73, the other end of the torsion spring 72 is connected with the reset plate 71, a gap 76 is formed between the push rod 73 and the jaw 74, so that the push rod 73 rotates 45 degrees relative to the jaw 74, when there is relative rotation between the push rod 73 and the jaw 74, the loaded torsion spring 72 stores power again, and when the rotation stops, the torsion spring 72 resets the push rod 73 to an initial state, one end of the push rod 73 sleeved on the jaw 74 is provided with, when the push rod 73 and the claw 74 rotate relatively and rotate at least 40 degrees, the starting gear 77 of the push rod 73 drives the starting gear 9 to do accelerated motion, the driven rod 91 on the starting gear 9 drives the rotating part on the potentiometer 41 to rotate, and the starting gear 9 rotates about one circle.

As shown in fig. 7, the initial position a of the drawer opening mechanism is a position where the drawer opening mechanism is closely attached to the drawer, and both are in a stationary state; the user touches the drawer, the push rod component is changed from an initial position a to a triggering position b under the action of drawing in the drawer after the drawer is touched, then the user releases the hand, the drawer rebounds to the initial position under the action of the sliding rail, the torsion spring 72 drives the push rod 73 to rotate from the position b to the position a ' for resetting, the starting gear 9 rotates, the starting gear 9 drives the rotating part of the potentiometer 41 to rotate through the driven rod 91, the starting condition of the drawer opening mechanism is triggered, the motor control part of the drawer opening mechanism supplies power to the motor 5, the motor 5 rotates, so that the push rod 73 is driven to rotate continuously to push out the drawer, the magnetic ring 52 rotates, the push rod 73 is driven by the torsion spring 72 from the triggering position b to the resetting position a ', the push rod 73 is in a no-load state to apply no force to the drawer, then the push rod 73 moves from the initial position a ' to the position c, in the process, the motor 5 runs for a fixed number of turns, when the push rod 73 reaches the output position, the drawer is completely opened, after the motor 5 stops for 2S, the motor control part gives a signal again, and the motor 5 reversely rotates to control the push rod 73 to return to the initial position a.

As shown in fig. 8 and 9, the motor rotating shaft 51 extends out from two ends of the motor 5, one end of the motor rotating shaft 51 is provided with a shaft gear 53, and the other end of the motor rotating shaft 51 is fixedly connected with a magnetic ring 52.

As shown in fig. 3, the transmission assembly is a gear pair 8, one end of the gear pair 8 is engaged with a rotating shaft gear 53 on a rotating shaft 51 of the motor, the other end of the gear pair 8 is engaged with the transmission gear 7, and the gear pair 8 is formed by sequentially engaging one or more reduction gears.

As shown in fig. 12, the hall element circuit is provided with two ways.

As shown in fig. 12, the first hall element circuit includes a hall element H1, a pull-up resistor R2, a voltage regulator DZ1, and a capacitor C1, a pin 1 of the hall element H1 is connected to a power source VCC through a resistor R1, a capacitor C1 for filtering and a voltage regulator DZ1 for stabilizing the power source are connected between the pin 1 of the hall element and the power source ground, a pin 2 of the hall element H1 is connected to the power source ground, a pin 3 of the hall element H1 is an output pin and is connected to a pull-up resistor R2, and the other end of the pull-up resistor R2 is connected to the power source VCC to ensure the high level stability of the output.

As shown in fig. 12, the second hall element circuit includes a hall element H2, a pull-up resistor R4, a voltage regulator DZ2, and a capacitor C2, where a pin 1 of the hall element H2 is connected to a power VCC through a resistor R3, a capacitor C2 for filtering and a voltage regulator DZ2 for stabilizing the power are connected between a pin 1 of the hall element H2 and the power ground, a pin 2 of the hall element H2 is connected to the power ground, and a pin 3 of the hall element H2 is an output pin and is connected to a pull-up resistor R4 to ensure high level stability of output.

As shown in fig. 10, an included angle between the first hall element H1 and the second hall element H2 in the two hall element circuits on the motor control circuit board 6 is 45 °.

Two hall elements H1 and H2 are distributed on a circular ring which takes the center of the magnetic ring 52 as a circular point, and an included angle of 45 degrees is formed between the two hall elements, as shown in fig. 13, waveforms output by the two hall elements are combined together to form a waveform of an orthogonal encoder type, the rotating direction of the motor and the rotating speed of the motor can be judged through the waveform of the orthogonal encoder type, the rotating speed of the motor can be calculated through the waveform output by the circuit and can be fed back to the micro control MCU unit 43 on the mechanism control circuit board 4, the rotating speed of the motor 5 can be adjusted by the micro control MCU unit 43 in real time, so that the motor 5 can keep a constant rotating speed, the smoothness of opening the drawer is improved, and the opening of the drawer is.

The above-mentioned embodiments further explain in detail the technical problems, technical solutions and advantages solved by the present invention, and it should be understood that the above only is a specific embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. The utility model provides a drawer opening mechanism of adaptation load automatic adjustment output, includes upper cover (1), goes up casing (2) and casing (3) down, go up and be provided with mechanism control circuit board (4) between upper cover (1) and upper cover (2), be provided with motor (5) and push rod subassembly in casing (3) down, motor (5) rotate its characterized in that through transmission assembly drive push rod subassembly: the motor control device is characterized in that a motor control part is arranged on the motor (5), the motor control part comprises a motor control circuit board (6) fixed in the lower shell (3) and a magnetic ring (52) fixed on a motor rotating shaft (51), a Hall element circuit used for detecting the rotating direction and the rotating speed of the magnetic ring (52) is arranged on the motor control circuit board (6), and the Hall element circuit is connected with the mechanism control circuit board (4).

2. The load-adaptive automatic output-adjusting drawer opening mechanism according to claim 1, wherein: the mechanism control circuit board (4) is provided with a potentiometer (41) used for starting the motor (5) to rotate, and the push rod assembly is connected with the potentiometer (41) through a starting signal transmission assembly.

3. The load-adaptive automatic output-adjusting drawer opening mechanism according to claim 1, wherein: the push rod assembly comprises a transmission gear (7), a reset piece (71), a torsion spring (72), a push rod (73) and a clamping jaw (74), the clamping jaw (74) is arranged on the transmission gear (7) and extends upwards, the push rod (73) is sleeved on the clamping jaw (74), a clamping jaw groove (75) is formed in the reset piece (71), the reset piece (71) is clamped on the clamping jaw (74) through the clamping jaw groove (75), the torsion spring (72) is arranged between the reset piece (71) and the push rod (73), one end of the torsion spring (72) is connected with the push rod (73), the other end of the torsion spring (72) is connected with the reset piece (71), a gap (76) exists between the push rod (73) and the clamping jaw (74), and the one end, sleeved on the clamping jaw (74), of the push rod (73) is provided with a starting tooth (77).

4. The load-adaptive automatic output-adjusting drawer opening mechanism according to claim 1, wherein: the motor rotating shaft (51) extends out of two ends of the motor (5), a rotating shaft gear (53) is arranged at one end of the motor rotating shaft (51), and the other end of the motor rotating shaft (51) is fixedly connected with the magnetic ring (52).

5. The load-adaptive automatic output-adjusting drawer opening mechanism according to claim 3, wherein: the transmission assembly is a gear pair (8), one end of the gear pair (8) is meshed with a rotating shaft gear (53) on a motor rotating shaft (51), and the other end of the gear pair (8) is meshed with the transmission gear (7).

6. The load-adaptive automatic output-adjusting drawer opening mechanism according to claim 5, wherein: the gear pair (8) is formed by one or more reduction gears which are meshed in sequence.

7. The load-adaptive automatic output-adjusting drawer opening mechanism according to claim 2, wherein: the starting signal transmission assembly comprises a starting gear (9) and a driven rod (91), the starting gear (9) is meshed with the starting teeth (77), and the driven rod (91) is arranged on the starting gear (9) and is inserted into a large semicircular hole (42) in the potentiometer (41).

8. The load-adaptive automatic output-adjusting drawer opening mechanism according to claim 1, wherein: the Hall element circuit is provided with two paths.

9. The load-adaptive automatic output-adjusting drawer opening mechanism according to claim 1, wherein: the Hall element circuit comprises a Hall element, a pull-up resistor, a voltage stabilizing tube and a capacitor, wherein a pin 1 of the Hall element is connected with a power supply VCC, the capacitor for filtering and the voltage stabilizing tube for stabilizing the power supply are connected between the pin 1 of the Hall element and a power supply ground, a pin 2 of the Hall element is connected with the power supply ground, and a pin 3 of the Hall element is an output pin and is connected with the pull-up resistor so as to ensure the stability of the output high level.

10. The load-adaptive self-adjusting output drawer opening mechanism of claim 9, wherein: the Hall elements comprise a first Hall element and a second Hall element, and the included angle of the first Hall element and the second Hall element on the motor control circuit board (6) is 45 degrees.