A rotation direction sensing device and a lock

Abstract

The present invention discloses a rotation direction sensing device and a lock. A knob is provided on the inner panel of the lock. The knob is connected to the lock pin and the rotation direction sensing device. Thus, the lock can start an auxiliary motor to perform unlocking or locking according to the detection and determination of the rotation direction of the knob by the rotation direction sensing device. The rotation direction sensing device includes a first panel and a second panel arranged in parallel. The first panel can rotate around its center and is provided with a magnet. No less than four Hall sensors are provided on the second panel. Each Hall sensor is arranged on the second panel at equal intervals in the circumferential direction with the rotation center of the first panel as the center of the circle. When the magnet on the first panel rotates to any position, at least one Hall sensor on the second panel can detect the magnetic field of the magnet. Thus, the lock can determine the rotation direction according to the data changes detected by each Hall sensor.

Description

Technical Field

[0001] The invention relates to an intelligent door lock, and in particular to an auxiliary unlocking mechanism of the intelligent door lock. Background Art

[0002] There are many fully automatic smart door locks on the market. This type of lock can automatically open and close the door, which greatly facilitates users. When users go out, they only need to press the unlock button to automatically open the door driven by the auxiliary motor. However, there is a risk: when the electronic part of the lock is damaged, the motor is damaged, the lock is underpowered, etc., the user cannot open the door by pressing the unlock button. At this time, the user needs to use the emergency knob to unlock the door, but the knob usually needs to be pressed to turn, which is inconvenient to operate. Under normal circumstances, users will not use this knob. In an emergency, it is difficult for users to quickly unlock the door. Summary of the invention

[0003] Problem to be solved by the present invention: In current fully automatic intelligent door locks, it is inconvenient to use an emergency knob to unlock the door.

[0004] To solve the above problems, the solution adopted by the present invention is as follows:

[0005] A rotation direction sensing device according to the present invention comprises a first panel and a second panel arranged parallel to each other;

[0006] The first panel is rotatable around its center and is provided with magnetic steel;

[0007] The second panel is provided with no less than four Hall sensors;

[0008] The Hall sensors are arranged on the second panel at equal intervals in a circumferential direction with the rotation center of the first panel as the center of the circle;

[0009] When the magnetic steel on the first panel rotates to any position, at least one Hall sensor on the second panel can detect the magnetic field of the magnetic steel.

[0010] Further, according to the rotation direction sensing device of the present invention, the distance between the magnetic steel on the first panel and the rotation center of the first panel is the same as the radius at which each Hall sensor on the second panel is arranged.

[0011] Further, according to the rotation direction sensing device of the present invention, the magnetic steel on the first panel is an arc-shaped magnetic steel; the arc-shaped magnetic steel takes the rotation center of the first panel as the center of the circle, and the arc center angle is not greater than the phase angle between two adjacent Hall sensors.

[0012] Furthermore, according to the rotation direction sensor device of the present invention, the arc-shaped magnetic steel is composed of a plurality of small magnetic steels.

[0013] Further, according to the rotation direction sensing device of the present invention, there are a plurality of magnets on the first panel; the magnets are arranged on the first panel at equal intervals in the circumferential direction with the rotation center of the first panel as the center; the number of the magnets does not exceed one quarter of the number of Hall sensors on the second panel.

[0014] Further, according to the rotation direction sensor device of the present invention, the first panel is a gear plate; the first panel is connected to the detected component by means of gear meshing of the gear plate.

[0015] A lock according to the present invention includes an inner door panel, an auxiliary motor and a controller arranged on the inner side of the door; the controller is connected to the auxiliary motor; the auxiliary motor is connected to the lock pin; and also includes the above-mentioned rotation direction sensing device; the inner door panel is provided with a knob; the knob is connected to the first panel of the rotation direction sensing device; the controller is connected to each Hall sensor of the rotation direction sensing device.

[0016] Furthermore, according to the lock of the present invention, the controller determines the rotation direction of the knob by receiving real-time data from each Hall sensor, and then starts the auxiliary motor according to the rotation direction of the knob to perform auxiliary door opening.

[0017] Further, according to the lock of the present invention, the knob is also connected to the lock pin.

[0018] Further, according to the lock of the present invention, the knob is connected to the transmission rod; the transmission rod is provided with a transmission gear; the first panel is a gear plate; the first panel is connected to the transmission gear by gear meshing.

[0019] The technical effects of the present invention are as follows: The present invention simplifies the design of the inner door panel, and only retains one knob. Under normal circumstances, the user only needs to rotate the knob in the unlocking direction to start the motor, and the motor assists in opening the door. Under abnormal circumstances, the user can still rotate the knob to open the lock. The user's operating habits are simplified, and the user experience is greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of a lock embodiment of the present invention.

[0021] Figure 2 It is a schematic diagram of the connection structure of the rotation direction sensor device in the lock of the present invention.

[0022] Figure 3 It is a schematic diagram of the electrical connection structure of the rotation direction sensor device in the lock of the present invention.

[0023] Figure 4 It is a schematic diagram of the exploded structure of an embodiment of the rotation direction sensor device of the present invention.

[0024] Figure 5 It is a structural schematic diagram of another embodiment of the magnetic steel of the present invention.

[0025] Figure 6 It is a structural schematic diagram of a first panel double magnetic steel implementation method of the present invention.

[0026] in,

[0027] 11 is a first panel, 12 is a second panel, 13 is a magnetic steel, and 14 is a Hall sensor;

[0028] 300 is a rotation direction sensing device, 400 is a controller, and 500 is an auxiliary motor.

[0029] 910 is the door inner panel, 920 is the door outer panel, 930 is the lock core assembly, and 931 is the lock pin;

[0030] 940 is a knob, 941 is a transmission gear, 942 is a rotation direction sensing device, and 950 is a transmission rod. DETAILED DESCRIPTION

[0031] The present invention is further described in detail below with reference to the accompanying drawings.

[0032] Example 1

[0033] This embodiment is a rotation direction sensing device, which is used to connect to a detected component and detect and sense the rotation direction of the connected detected component. Figure 4 As shown, the rotation direction sensing device includes a first panel 11 and a second panel 12 arranged in parallel with each other. The first panel 11 is used to connect the detected component. When the detected component rotates, it can drive the first panel 11 to rotate around its center. In this embodiment, the first panel 11 is a gear plate, and the detected component is connected through the meshing between the gears of the gear plate. The first panel 11 is provided with a magnet 13. The center distance between the magnet 13 and the rotation center of the first panel 11 is R1. No less than four Hall sensors 14 are provided on the second panel 12. Figure 4 In the example given, there are eight Hall sensors 14 provided on the second panel 12. The Hall sensors 14 are arranged on the second panel 12 at equal intervals in the circumferential direction with the rotation center of the first panel 11 as the center, and the radius R2 and R1 of the arrangement of the Hall sensors 14 are the same. In other words, the Hall sensors 14 on the second panel 12 form a circle, the center of which is located at the axis of the rotation axis of the first panel 11, and the radius R2 of the circle is the same as the center distance R1 of the magnetic steel 13 from the rotation center of the first panel 11.

[0034] When the first panel 11 rotates driven by the detected component, the magnetic steel 13 on the first panel 11 rotates around the rotation axis of the first panel 11. When the magnetic steel 13 rotates around the rotation axis of the first panel 11, the magnetic steel 13 moves along the arrangement direction of the Hall sensors 14. When the magnetic steel 13 on the first panel 11 rotates to any position, it can be detected by at least one Hall sensor 14 on the second panel 12. Therefore, when the magnetic steel 13 rotates to any position, the Hall sensor 14 at the corresponding position can detect the magnetic field generated by the magnetic steel 13. Figure 1 In the example given, the magnetic steel 13 on the first panel 11 is a point-shaped magnetic steel with strong magnetism. For the magnetic steel with weak magnetism, in order to enable the Hall sensor 14 at the corresponding position to detect when the magnetic steel 13 rotates to any position, the following method can also be used: Figure 5 The arc-shaped magnetic steel 13 has the rotation center of the first panel 11 as the center of the circle, and the arc center angle is A2. Generally speaking, the arc center angle A2 of the arc-shaped magnetic steel should not be greater than the phase angle A1 between two adjacent Hall sensors 14. Figure 5 In the example given, the arc center angle A2 of the arc-shaped magnetic steel is the same as the phase angle A1 between two adjacent Hall sensors 14 .

[0035] In addition, it should be noted that there may be a plurality of magnetic steels 13 on the first panel 11, as shown in FIG. Figure 6 . Figure 6 In the example, there are two magnetic steels 13 on the first panel 11. The two magnetic steels differ in phase angle by 180 degrees, or in other words, the two magnetic steels 13 are arranged on the first panel 11 at equal intervals in the circumferential direction with the rotation center of the first panel 11 as the center. Specifically, in the case where there are multiple magnetic steels 13 on the first panel 11, each magnetic steel 13 is arranged on the first panel 11 at equal intervals in the circumferential direction with the rotation center of the first panel 11 as the center. In addition, in this case, it is generally required that the number of magnetic steels 13 does not exceed one-fourth of the number of Hall sensors 14 on the second panel 12.

[0036] In addition, for Figure 5 As for the arc-shaped magnetic steel 13 in the example, those skilled in the art will appreciate that the arc-shaped magnetic steel 13 may be composed of a plurality of small magnetic steels.

[0037] Example 2

[0038] This embodiment is a lock, specifically, a smart door lock for installation on a door panel. Figure 1As shown, it includes an inner door panel 910, an outer door panel 920 and a lock core assembly 930. The inner door panel 910 is a part used to be set on the inner side of the door body. The outer door panel 920 is a part used to be set on the outer side of the door body. The lock core assembly 930 is a part set inside the door body. The lock core assembly 930 is provided with a circuit board, a lock core and a lock pin 931. The circuit board is connected to the lock core; the lock core is connected to the lock pin 931. However, when the rotatable part of the lock core rotates, it can drive the lock pin 931 to extend and retract to open and close the door. The outer door panel 920 is provided with a component for identity authentication input, such as: a fingerprint input module, a password input module, a facial recognition input module or a finger vein input module, etc. In this embodiment, the inner door panel 910 is also provided with a knob 940, and the outer door panel 920 is also provided with an auxiliary motor. The knob 940 and the auxiliary motor are connected to a square transmission rod 950. The transmission rod 950 is connected to the lock core in the lock core assembly 930. When the transmission rod 950 rotates, the transmission components in the lock core assembly 930 drive the lock pin 931 to extend and retract to open and close the door. Figure 2 As shown, a transmission gear 941 is provided on the square transmission rod 950, and the rotation direction sensing device 300 is connected through the transmission gear 941. The rotation direction sensing device 300 is the rotation direction sensing device in Example 1. In the rotation direction sensing device, the first panel 11 is a gear plate meshing with the transmission gear 941. Therefore, when the knob 940 is rotated, the transmission rod 950 is driven to rotate, and then the first panel 11 is driven to rotate through the transmission gear 941. When the first panel 11 rotates, the magnet 13 on the first panel 11 moves along the arrangement direction of the Hall sensor 14 on the second panel 12. The electrical connection of the Hall sensor 14 in the rotation direction sensing device 300 refers to Figure 3 .

[0039] like Figure 3As shown, the Hall sensor 14 in the rotation direction sensing device 300 is connected to the controller 400; the controller 400 is connected to the auxiliary motor 500. The auxiliary motor 500 is an auxiliary motor arranged in the door outer panel 92, and is connected to the transmission rod 950. The controller 400 is implemented by a circuit board in the lock core assembly 930, including components such as a microprocessor and a memory. The controller 400 executes a program instruction set through a microprocessor to realize the intelligence of the lock. Specifically in the lock of this embodiment, the controller 400 determines the rotation direction of the knob 940 by receiving the real-time data of each Hall sensor 14, and then starts the auxiliary motor 500 according to the rotation direction of the knob 940 to perform auxiliary door opening. More specifically, the controller 400 determines the rotation direction of the knob 940 based on the front and back changes of the collected magnetic data of the Hall sensor 14; if the rotation direction of the knob 940 is the door opening direction, the auxiliary motor 500 is started to perform auxiliary door opening. At this time, the auxiliary motor 500 drives the transmission rod 950 to rotate, thereby driving the lock pin 931 to retract to achieve the door opening action; if the rotation direction of the knob 940 is the door closing direction, the auxiliary motor 500 is started to perform auxiliary door closing. At this time, the auxiliary motor 500 drives the transmission rod 950 to rotate, thereby driving the lock pin 931 to extend to achieve the door closing action.

[0040] In this embodiment, the knob 940 is connected to the transmission rod 950 through a ratchet structure, so that when the knob 940 is rotated, the transmission rod 950 can be driven to rotate; and when the transmission rod 950 is rotated, the knob 940 cannot be driven to rotate. When the lock is working normally, after the knob 940 is rotated, the controller 400 determines the rotation direction of the knob 940 by receiving the real-time data of each Hall sensor 14, and then starts the auxiliary motor 500 according to the rotation direction of the knob 940. The auxiliary motor 500 drives the transmission rod 950 to rotate further, thereby realizing the door opening or closing action. When the lock is in an abnormal state, the door opening or closing action can be realized through the transmission of the transmission rod 950 by continuously rotating the knob 940.

Claims

1. A lock, comprising an inner door panel arranged on the inner side of a door, an auxiliary motor and a controller; the controller is connected to the auxiliary motor; the auxiliary motor is connected to a lock pin; characterized in that; Also included is a rotation direction sensing device; the rotation direction sensing device includes a first panel and a second panel arranged parallel to each other; The first panel is rotatable around its center and is provided with magnetic steel; The second panel is provided with no less than four Hall sensors; The Hall sensors are arranged on the second panel at equal intervals in a circumferential direction with the rotation center of the first panel as the center of the circle; When the magnetic steel on the first panel rotates to any position, at least one Hall sensor on the second panel can detect the magnetic field of the magnetic steel; The door inner panel is provided with a knob; the knob is connected to the lock pin and to the first panel of the rotation direction sensor device; the controller is connected to each Hall sensor of the rotation direction sensor device; The controller determines the rotation direction of the knob by receiving real-time data from each Hall sensor, and then starts the auxiliary motor according to the rotation direction of the knob to perform auxiliary door opening or closing.

2. The lock according to claim 1, characterized in that: The distance between the magnetic steel on the first panel and the rotation center of the first panel is the same as the radius at which each Hall sensor on the second panel is arranged.

3. The lock according to claim 1, characterized in that: The magnetic steel on the first panel is an arc-shaped magnetic steel; the arc-shaped magnetic steel takes the rotation center of the first panel as the center of the circle, and the central angle of the arc is not greater than the phase angle between two adjacent Hall sensors.

4. The lock according to claim 3, characterized in that: The arc-shaped magnetic steel is composed of a plurality of small magnetic steels.

5. The lock according to claim 1, characterized in that: There are a plurality of magnetic steels on the first panel; the magnetic steels are arranged on the first panel at equal intervals in the circumferential direction with the rotation center of the first panel as the center; the number of the magnetic steels does not exceed one quarter of the number of the Hall sensors on the second panel.

6. The lock according to claim 1, characterized in that: The knob is connected to a transmission rod; a transmission gear is arranged on the transmission rod; the first panel is a gear plate; the first panel is connected to the transmission gear by gear meshing.

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