Auxiliary door lock with insurance function

Abstract

The present invention belongs to the technical field of electronic locks, and particularly refers to a secondary door lock with a safety function, comprising a lock shell, in which a motor, a reduction gear set, an upper gutter pull rod and a lower gutter pull rod are installed, the upper gutter pull rod and the lower gutter pull rod are slidably arranged in the lock shell and slide up and down driven by the reduction gear set, comprising a control circuit board, and the control circuit board controls the forward and reverse rotation of the motor; at least one hole position is arranged on the side of the lock shell, and the hole position is used for the pin of the main door lock body to extend into and realize the closing of the main door and the secondary door, and an induction switch is arranged in the lock shell, and the induction switch is used to detect the pin of the main door lock body; when the pin of the main door lock body enters the hole position, the induction switch detects the pin of the main door lock body, and the motor cannot rotate; when the pin of the main door lock body is out of the hole position, the control circuit board can control the forward and reverse rotation of the motor. The present invention provides a secondary door lock with a safety function that is simple in structure and stable.

Description

Technical Field

[0001] The invention belongs to the technical field of electronic locks, and in particular relates to a secondary door lock with a safety function. Background Art

[0002] The double door consists of a main door and a secondary door (the main door and the secondary door can also be called two single doors). The main door and the secondary door can be opened in two directions. The secondary door is equipped with a latch, which can lock the secondary door to the door frame. The main door is equipped with a lock, which can lock the main door to the secondary door. The secondary door on the market can lock the door frame through the upper and lower gutters, but it has the following shortcomings: a. There is a priority between the main door and the secondary door. The main door must be opened first and then the secondary door. However, the products on the market do not have this secondary door post-opening protection. If the user opens the secondary door first, the pin of the main door lock body is still in the secondary door lock. The pin of the main door lock body will be subjected to shear force, which is very easy to damage the main door lock body; b. It is necessary to manually pull the upper and lower gutters. Some doors are high. Pulling the upper gutter requires a chair / ladder to climb up, which increases the risk of climbing; c. Manual operation will inevitably result in the phenomenon that the pin of the secondary door is not pulled back into the secondary door. When the upper pin / lower pin of the secondary door is not pulled back into the secondary door and the secondary door is turned, the pin will collide with the door frame, and even the longer pin will collide / scratch the ground, affecting the appearance of the door frame and the ground. Summary of the invention

[0003] The object of the present invention is to provide a secondary door lock with a simple and stable structure and a safety function.

[0004] The object of the present invention is achieved in that:

[0005] A secondary door lock with a safety function comprises a lock housing, wherein a motor, a reduction gear set, an upper gutter pull rod and a lower gutter pull rod are installed in the lock housing, the upper gutter pull rod and the lower gutter pull rod are slidably arranged in the lock housing and slide up and down driven by the reduction gear set.

[0006] It includes a control circuit board, which controls the forward and reverse rotation of the motor;

[0007] At least one hole is provided on the side of the lock shell, and the hole is used for the pin of the main door lock body to extend into and realize the closing of the main door and the auxiliary door. In addition, an induction switch is provided in the lock shell, and the induction switch is used to detect the pin of the main door lock body; when the pin of the main door lock body enters the hole, the induction switch detects the pin of the main door lock body, and the motor cannot rotate; when the pin of the main door lock body is out of the hole, the induction switch does not detect the pin of the main door lock body, and the control circuit board can control the forward and reverse rotation of the motor.

[0008] The induction switch is a magnetic induction switch, and a magnet is arranged on the latch of the main door lock body.

[0009] The magnetic induction switch is a Hall switch, the magnet is an independent component, the magnet can be adsorbed / embedded / fixed on the latch of the main door lock body, and the induction switch is electrically connected to the control circuit board.

[0010] The magnet does not contact the lock housing and the induction switch.

[0011] The sides of the upper gutter pull rod and the lower gutter pull rod are provided with longitudinal racks, and the same gear in the reduction gear set is engaged with the longitudinal racks of the upper gutter pull rod and the lower gutter pull rod, and the same gear in the reduction gear set drives the upper gutter pull rod and the lower gutter pull rod to move synchronously.

[0012] The upper gutter pull rod and the lower gutter pull rod are both provided with at least two longitudinal slots, and a support rod is provided in the lock housing, and the support rod is placed in the longitudinal slots.

[0013] A power source is arranged in the lock housing, and the power source supplies power to the control circuit board, the magnetic induction switch and the motor; the reduction gear set comprises at least one pair of bevel gears and at least two pairs of reduction gears.

[0014] A gyroscope is installed in the lock housing, and the gyroscope is used to detect the position of the lock housing.

[0015] The control circuit board includes a receiving module, which receives an external driving signal and feeds it back to the control circuit board, so that the control circuit board controls the motor.

[0016] The switch gives a signal to the control circuit board, which in turn controls the motor.

[0017] Compared with the prior art, the present invention has the following outstanding and beneficial technical effects:

[0018] 1. The present invention realizes the detection function of the main door lock body by using an induction switch arranged in the lock body to sense whether the bolt of the main door lock body is away from the lock body. This is a safety protection step for the main door lock body. The user can open the secondary door only when the main door is in the open state.

[0019] 2. The magnetic induction switch of the present invention is a Hall switch, and the magnet is an independent component. The magnet can be adsorbed / embedded / fixed on the bolt of the main door lock body. The bolt detection of the main door lock body is realized by means of the magnet and the Hall switch, and the advantage of the high detection accuracy of the Hall switch itself is utilized to make the product more accurate. In addition, in order to prevent the magnet from being adsorbed by other metals, the magnet does not contact the lock housing and the induction switch. When the magnet does not contact other components except the bolt of the main door lock body, it can be ensured that the magnet is effectively placed on the bolt of the main door lock body.

[0020] 3. The present invention uses a motor to pull the upper gutter pull rod and the lower gutter pull rod, which are used to drive the upper and lower latches of the auxiliary door respectively. The user only needs to send a signal / press a switch to unlock the auxiliary door lock, which is simple to operate. In addition, when unlocking, the upper gutter pull rod and the lower gutter pull rod are always retracted into the lock body, and when locking, the upper gutter pull rod and the lower gutter pull rod are extended from the lock body. Therefore, in the unlocked state, the latch of the auxiliary door can always be kept inside the auxiliary door and not exposed, ensuring the effectiveness of opening the door.

[0021] 4. The present invention uses a gyroscope to detect the position of the lock shell. When the auxiliary door is opened, the gyroscope is activated. When the auxiliary door is effectively closed, the gyroscope gives a signal to the control circuit board, and the control circuit board can control the motor to pull the upper gutter pull rod and the lower gutter pull rod, thereby closing the auxiliary door and ensuring the stability of closing the door.

[0022] 5. The present invention adopts the same gear to synchronously drive the upper gutter pull rod and the lower gutter pull rod to ensure effective unlocking / unlocking of the auxiliary door lock, and the upper gutter pull rod and the lower gutter pull rod are both provided with at least two longitudinal slots, and a support rod is provided in the lock housing, and the support rod is placed in the longitudinal slots. Through this structure, the upper gutter pull rod and the lower gutter pull rod are guaranteed to slide longitudinally effectively in the lock housing, thereby ensuring the stability of the structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is one of the structural schematic diagrams of the present invention;

[0024] Figure 2 This is the second structural schematic diagram of the present invention;

[0025] Figure 3 It is one of the internal structure schematic diagrams of the present invention;

[0026] Figure 4 This is the second schematic diagram of the internal structure of the present invention;

[0027] Figure 5 yes Figure 4 A schematic diagram of the enlarged structure at point A;

[0028] Figure 6 It is one of the partial structural schematic diagrams of the present invention;

[0029] Figure 7 This is the second partial structural schematic diagram of the present invention;

[0030] Figure 8 It is one of the control block diagrams of the present invention;

[0031] Fig. 9 This is the second control block diagram of the present invention;

[0032] Fig.10This is the third control block diagram of the present invention;

[0033] Fig.11 This is the fourth control block diagram of the present invention.

[0034] In the figure: 1-lock housing; 10-hole position; 11-support rod; 21-upper gutter pull rod; 211-upper gutter pull rod longitudinal rack; 22-lower gutter pull rod; 221-lower gutter pull rod longitudinal rack; 23-longitudinal notch; 3-motor; 31-sensor; 4-reduction gear set; 41-bevel gear set; 42-reduction gear; 5-control circuit board; 51-receiving module; 52-induction switch; 6-power supply; 7-pin of main door lock body. DETAILED DESCRIPTION

[0035] The present invention will be further described below with reference to specific embodiments of the present invention. Figure 1-11 As shown:

[0036] A secondary door lock with a safety function comprises a lock housing 1, wherein a motor 3, a reduction gear set 4, an upper gutter pull rod 21 and a lower gutter pull rod 22 are installed in the lock housing 1, and the upper gutter pull rod 21 and the lower gutter pull rod 22 are slidably arranged in the lock housing 1 and slide up and down under the drive of the reduction gear set 4.

[0037] It includes a control circuit board 5, which controls the forward and reverse rotation of the motor 3;

[0038] At least one hole 10 is provided on the side of the lock housing 1. The hole 10 is used for the bolt 7 of the main door lock body to extend into and realize the closing of the main door and the auxiliary door. The number of holes 10 is related to the actual lock body. The number of bolts 7 of different main door lock bodies is different. In addition, a sensor switch 52 is provided in the lock housing 1. The sensor switch 52 is used to detect the bolt 7 of the main door lock body. When the bolt 7 of the main door lock body enters the hole 10, the sensor switch 52 detects the bolt 7 of the main door lock body, and the motor 3 cannot rotate. When the bolt 7 of the main door lock body is out of the hole 10, the sensor switch 52 does not detect the bolt 7 of the main door lock body, and the control circuit board 5 can control the forward and reverse rotation of the motor 3. The detection function of the main door lock body is realized by the sensor switch 52. This is a safety protection step for the main door lock body. The user can open the auxiliary door only when the main door is in the open state.

[0039] The lock housing 1 is provided with a power supply 6 , which supplies power to the control circuit board 5 , the induction switch 52 and the motor 3 .

[0040] The induction switch 52 is a magnetic induction switch, and a magnet is provided on the latch 7 of the main door lock body, which is not shown in the attached figure. The stability of detection is improved by magnetic induction. The induction switch 52 is a Hall switch, and the magnet is an independent component. The magnet can be adsorbed / embedded / fixed on the latch 7 of the main door lock body, preferably at the end position of the latch 7 of the main door lock body. The latch 7 of the main door lock body is detected by means of a magnet and a Hall switch, and the advantage of the high detection accuracy of the Hall switch itself is utilized to make the product more accurate. In addition, in order to prevent the magnet from being adsorbed by other metals, the magnet does not contact the lock housing 1 and the induction switch 52. The magnet does not contact other components except the latch 7 of the main door lock body, which can ensure that the magnet is effectively placed on the latch 7 of the main door lock body.

[0041] The induction switch 52 is electrically connected to the control circuit board 5 . The control circuit board 5 can control the motor 3 to rotate only when and if the induction switch 52 gives a signal that the latch 7 of the main door lock body is away from the hole 10 .

[0042] The motor 3 is used to pull the upper gutter pull rod 21 and the lower gutter pull rod 22, which are used to drive the upper and lower latches of the auxiliary door respectively. The auxiliary door is fixed to the door frame by the latch. The user only needs to send a signal / press the switch to unlock the auxiliary door lock, which is simple to operate. In addition, when unlocking, the upper gutter pull rod 21 and the lower gutter pull rod 22 are always retracted into the lock body, and when locking, the upper gutter pull rod 21 and the lower gutter pull rod 22 are extended out of the lock body. Therefore, in the unlocked state, the latch of the auxiliary door can always be kept in the auxiliary door without being exposed, ensuring the effectiveness of opening the door.

[0043] The upper gutter rod 21 is provided with an upper gutter rod longitudinal rack 211 on the side, and the lower gutter rod 22 is provided with a lower gutter rod longitudinal rack 221 on the side. The same gear in the reduction gear set 4 is engaged with the upper gutter rod longitudinal rack 211 and the lower gutter rod longitudinal rack 221. The same gear in the reduction gear set 4 drives the upper gutter rod 21 and the lower gutter rod 22 to move synchronously. The same gear is used to synchronously drive the upper gutter rod 21 and the lower gutter rod 22 to ensure effective unlocking / unlocking of the auxiliary door lock, and the upper gutter rod 21 and the lower gutter rod 22 are both provided with at least two longitudinal notches 23. The lock housing 1 is provided with a support rod 11, and the support rod 11 is placed in the longitudinal notches 23. The structure at this location ensures that the upper gutter rod 21 and the lower gutter rod 22 can slide effectively longitudinally in the lock housing 1, thereby ensuring the stability of the structure.

[0044] The reduction gear set 4 includes at least one pair of bevel gears 41 and at least two pairs of reduction gears 42. The bevel gear set 41 changes the transmission direction and reduces the speed, and cooperates with the three pairs of reduction gears 42 to reduce the speed, ensuring that the motor 3 can stably drive the upper gutter pull rod 21 and the lower gutter pull rod 22.

[0045] A gyroscope is installed in the lock housing 1, and the gyroscope is used to detect the position of the lock housing 1. When the auxiliary door is opened, the gyroscope is activated. When the auxiliary door is effectively closed, the gyroscope gives a signal to the control circuit board, and the control circuit board 5 can control the motor 3 to pull the upper gutter pull rod 21 and the lower gutter pull rod 22, so as to close the auxiliary door and ensure the stability of the door closing. When the auxiliary door is closed, the gyroscope is preferably in a dormant state and waits for the next auxiliary door opening signal. The gyroscope preferably performs signal analysis by detecting the position of the auxiliary door / the rotation angle of the auxiliary door.

[0046] Preferably, a detection switch is provided in the lock housing 1, and the detection switch can be used to detect the number of revolutions of the motor 3. A rotating shaft extends from the rear of the motor 3, and the rotating shaft rotates synchronously with the motor 3. A sensor 31 is provided on the rotating shaft, and a detection switch for detecting the sensor 31 is provided in the lock housing 1. The detection switch is a chip on the control circuit board, so it is not marked in the drawings. Detecting the number of revolutions of the motor 3 can more effectively achieve accurate pulling of the stroke of the upper gutter pull rod 21 and the lower gutter pull rod 22. The sensor 31 can be a magnetic sensor, and the detection switch can detect a signal every time it rotates a certain angle. Of course, there are several other ways to detect the number of revolutions of the motor 3 on the market, and the above scheme is preferred.

[0047] There are several ways to control the rotation of the motor 3: Method 1, such as Figure 8 As shown, the user can send a signal to the receiving module 51 through Bluetooth communication / mobile phone communication, and the control circuit board 5 controls the motor 3 to rotate after receiving the signal; method 2, such as Fig. 9 As shown, the control circuit board 5 can be directly controlled by the switch, and then the control circuit board 5 controls the motor 3 to rotate after receiving the signal, or a signal can be sent to the receiving module 51 by Bluetooth communication / mobile phone communication, and the control circuit board 5 controls the motor 3 to rotate after receiving the signal; method 3, such as Fig.10 As shown, the switch sends a signal to the receiving module 51, and the receiving module 51 processes the signal and then transmits it to the control circuit board 5, the control circuit board; mode 4, such as Fig.11 As shown, the control circuit board is directly controlled by the switch, and then the control circuit board 5 controls the motor 3 to rotate after receiving the signal. Since the switch needs to be installed on the auxiliary door, it is not shown in the figure. There are various control methods. In fact, one method or a combination of several methods can be selected. The manufacturer can configure it according to actual needs. Moreover, the above four methods are all subject to the restrictions of the induction switch. The motor can be driven only when the main door is opened, that is, the induction switch does not detect the bolt state of the main door lock body.

[0048] The product described in this invention will inevitably involve circuits, but the control circuit board used in this invention is an outsourced part. According to the needs of our products, it is provided to the circuit design manufacturer, and the manufacturer can provide the corresponding control circuit board. We only need to connect the wires. In addition, the present invention only needs to drive the motor forward and reverse, switch / external communication equipment to control the motor, gyroscope positioning, etc. The circuit design is very simple, and people in this field can easily design the circuit control board.

[0049] The above embodiments are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A secondary door lock with a safety function, comprising a lock housing (1), characterized in that: The lock housing (1) is provided with a motor (3), a reduction gear set (4), an upper gutter pull rod (21) and a lower gutter pull rod (22). The upper gutter pull rod (21) and the lower gutter pull rod (22) are slidably arranged in the lock housing (1) and slide up and down under the drive of the reduction gear set (4). It comprises a control circuit board (5), and the control circuit board (5) controls the forward and reverse rotation of the motor (3); The lock housing (1) is provided with at least one hole (10) on the side thereof, and the hole (10) is used for the bolt (7) of the main door lock body to extend therein and realize the closing of the main door and the auxiliary door, and the lock housing (1) is provided with a sensing switch (52) therein, and the sensing switch (52) is used for detecting the bolt (7) of the main door lock body; when the bolt (7) of the main door lock body enters the hole (10), the sensing switch (52) detects the bolt (7) of the main door lock body, and the motor (3) cannot rotate; when the bolt (7) of the main door lock body is out of the hole (10), the sensing switch (52) does not detect the bolt (7) of the main door lock body, and the control circuit board (5) can control the forward and reverse rotation of the motor (3); A gyroscope is installed in the lock housing (1), and the gyroscope is used to detect the position of the lock housing (1); The switch gives a signal to the control circuit board, which in turn controls the motor (3).

2. The auxiliary door lock with safety function according to claim 1, characterized in that: The induction switch (52) is a magnetic induction switch, and a magnet is arranged on the latch pin (7) of the main door lock body.

3. The auxiliary door lock with safety function according to claim 2, characterized in that: The inductive switch (52) is a Hall switch, and the magnet is an independent component. The magnet can be adsorbed / embedded / fixed on the latch (7) of the main door lock body, and the inductive switch (52) is electrically connected to the control circuit board (5).

4. The auxiliary door lock with safety function according to claim 2 or 3, characterized in that: The magnet does not contact the lock housing (1) and the induction switch (52).

5. The auxiliary door lock with safety function according to claim 1, 2 or 3, characterized in that: The sides of the upper gutter pull rod (21) and the lower gutter pull rod (22) are provided with longitudinal racks, and the same gear in the reduction gear set (4) is engaged with the longitudinal racks of the upper gutter pull rod (21) and the lower gutter pull rod (22), and the same gear in the reduction gear set drives the upper gutter pull rod (21) and the lower gutter pull rod (22) to move synchronously.

6. The auxiliary door lock with safety function according to claim 5, characterized in that: The upper gutter pull rod (21) and the lower gutter pull rod (22) are both provided with at least two longitudinal slots (23), and a support rod (11) is provided in the lock housing (1), and the support rod (11) is placed in the longitudinal slots (23).

7. The auxiliary door lock with safety function according to claim 2 or 3, characterized in that: A power source (6) is arranged in the lock housing (1), and the power source (6) supplies power to the control circuit board (5), the induction switch (52) and the motor (3); the reduction gear set (4) comprises at least one pair of bevel gears (41) and at least two pairs of reduction gears (42).

8. The auxiliary door lock with safety function according to claim 1, 2 or 3, characterized in that: The control circuit board (5) comprises a receiving module, which receives an external driving signal and feeds it back to the control circuit board (5), thereby allowing the control circuit board to control the motor (3).

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