Safety door lock system for hand sliding door elevator

Abstract

The invention discloses a safety door lock system for a hand sliding door elevator. The safety door lock system comprises a door lock structure and a door lock safety circuit. The door lock structure comprises an elevator door, a door frame and a door lock unit installed on the door frame. The elevator door is provided with a door lock hole corresponding to the door lock unit, and the door frame is provided with a door lock installation position corresponding to the elevator door and used for installing the door lock unit. The door lock unit comprises a lock shell, a spring bolt arranged in the lock shell, a door lock connecting rod for driving the spring bolt to move and a driving mechanism for driving the door lock connecting rod to act; the driving mechanism comprises a driving motor, a driving screw rod and a moving block; the door lock connecting rod comprises a spring bolt arm linked with the spring bolt, a rotating arm linked with the moving block and a rotating part for connecting the rotating arm with the spring bolt arm; the door lock connecting rod drives the spring bolt to stretch out of or retract into the lock shell. The door lock has the advantages of low use noise and low failure rate.

Description

Technical Field

[0001] The invention relates to the technical field of elevators, in particular to a safety door lock system for a manual door elevator. Background Art

[0002] Hand-pull doors are currently a commonly used way to open doors in home elevators, etc. The door locks of hand-pull doors usually use electromagnetic induction or magnetic lock tongue.

[0003] The electromagnetic induction method does not require the lock core and the lock head to be completely aligned. As long as the lock core and the lock head can reach a satisfactory level of mutual inductance, the detection circuit will believe that the door lock is fully closed, thereby allowing the elevator to operate up and down. Even if the hand-pull door is crooked or has a minor fault, the elevator will continue to operate, posing a safety hazard.

[0004] The method of using a magnetic lock tongue, which uses an electromagnetic on-off method to move the lock tongue in and out, thereby realizing the opening and closing of the door lock. Although it can ensure that the door lock is closed in place to a certain extent, the magnetic locking tongue is noisy when it is moved in and out, seriously affecting the user experience, and the magnetic structure has a high failure rate after long-term use, affecting its use. Summary of the invention

[0005] The object of the present invention is to provide a safety door lock system for a manual door elevator. The present invention has the advantages of low noise in door lock use and low failure rate.

[0006] The technical solution of the present invention is as follows: a safety door lock system for a manual door elevator, comprising a door lock structure and a door lock safety circuit; the door lock structure comprises an elevator door, a door frame and a door lock unit installed on the door frame; the elevator door is provided with a door lock hole corresponding to the door lock unit, and the door frame is provided with a door lock installation position corresponding to the elevator door for installing the door lock unit; the door lock unit comprises a lock shell, a lock tongue arranged in the lock shell, a door lock connecting rod driving the lock tongue to move, and a driving mechanism driving the door lock connecting rod to move; the driving mechanism comprises a driving motor, a driving screw and a moving block; the door lock connecting rod comprises a lock tongue arm linked to the lock tongue, a rotating arm linked to the moving block and a rotating part connecting the rotating arm and the lock tongue arm; the door lock connecting rod drives the lock tongue to extend out of or retract into the lock shell.

[0007] The aforementioned safety door lock system for a manual door elevator, the lock housing is provided with a mounting seat for mounting a driving mechanism, the mounting seat includes an upper fixing plate, a lower fixing plate and a limiting column arranged between the upper fixing plate and the lower fixing plate; the driving screw rod can be rotatably sleeved between the upper fixing plate and the lower fixing plate; the driving motor is connected to the driving screw rod through a linkage.

[0008] The aforementioned safety door lock system for a hand-pull door elevator has a threaded portion on the driving screw, and a threaded tooth block screwed to the threaded portion is provided on one side of the moving block; a limiting groove corresponding to the rotating arm is provided inside the moving block.

[0009] In the aforementioned safety door lock system for a hand-pull door elevator, the movable block is liftably mounted on the limit column; and the linkage member is a gear set.

[0010] The aforementioned safety door lock system for a manual door elevator is characterized in that a rotating seat for mounting a door lock connecting rod is provided on the lock housing; the rotating portion is rotatably arranged on the rotating seat; the lock tongue is provided with guide blocks corresponding to the lock tongue arm and distributed on both sides of the lock tongue arm; each of the guide blocks is circular and has an elastic layer on the outer side; a guide column corresponding to the lock tongue is provided in the lock housing, a limiting sleeve block is provided at the end of the lock tongue, and the lock tongue sleeve is provided on the guide column.

[0011] The aforementioned safety door lock system for a manual door elevator has contact switches correspondingly distributed in the lock housing, and a trigger block distributed between the contact switches is connected below the lock tongue.

[0012] The aforementioned safety door lock system for a hand-operated door elevator, the door lock safety circuit includes a detection circuit, a hall door lock feedback circuit and a car door lock feedback circuit; the hall door lock feedback circuit and the car door lock feedback circuit are both connected in series with the detection circuit; the hall door lock feedback circuit and the car door lock feedback circuit are both provided with an intermediate relay; the signal detector of the detection circuit is respectively connected to the intermediate relays of the hall door lock feedback circuit and the car door lock feedback circuit.

[0013] Compared with the prior art, the present invention provides a safety door lock system dedicated to a hand-pull door elevator, which starts from the two aspects of mechanical mechanism and circuit. The door lock structure is composed of a door lock unit including a lock shell, a lock tongue, a door lock connecting rod and a driving mechanism, an elevator door and a door frame. The door lock connecting rod includes a rotating arm, a lock tongue arm and a rotating part. The driving mechanism is composed of a driving motor, a driving screw and a moving block. The driving motor drives the driving screw to rotate by forward and reverse rotation, thereby driving the moving block to move up and down. The moving block is connected to drive the rotating arm to rotate with the rotating part as the axis, thereby driving the lock tongue arm to rotate. The rotation of the lock tongue arm drives the lock tongue to translate to achieve the throughput of the lock tongue, thereby completing the opening and closing of the door lock.

[0014] The structure of the present application is adopted, and the motor drive is used to replace the traditional magnetic attraction method. In combination with the linkage mechanism such as the door lock connecting rod, the driving stroke can be converted and amplified multiple times, and only a small torque motor is needed to drive the action of the lock tongue; the small torque motor action is adopted, and the force of driving the lock tongue action is small, and a small force can be maintained when the switch lock tongue is in place, and no malfunction will occur due to excessive force of the switch lock;

[0015] Moreover, the use of a small torque motor will not cause the motor to heat up during long-term operation, and its service life will be greatly extended, ensuring long-term stable operation.

[0016] Therefore, the door lock of the present invention has the advantages of low noise in use and low failure rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the door lock structure of the present invention;

[0018] Figure 2 is a circuit diagram of a detection circuit according to an embodiment of the present invention;

[0019] Figure 3 is a circuit diagram of a hall door lock feedback loop according to an embodiment of the present invention;

[0020] Figure 4 4 is a circuit diagram of a car door lock feedback loop according to an embodiment of the present invention.

[0021] Markings in the accompanying drawings: 1-lock housing, 11-contact switch, 12-guide column, 21-rotating arm, 22-lock tongue arm, 23-rotating part, 3-rotating seat, 4-lock tongue, 41-limiting sleeve block, 42-guide block, 43-touch block, 51-drive motor, 52-drive screw, 53-threaded part, 61-upper fixed plate, 62-lower fixed plate, 63-limiting column, 7-moving block, 71-threaded tooth block. DETAILED DESCRIPTION

[0022] The present invention is further described below in conjunction with the accompanying drawings and embodiments, but they are not intended to limit the present invention.

[0023] Embodiment. A safety door lock system for a hand-operated door elevator, such as Figure 1 , including a door lock structure and a door lock safety circuit; the door lock structure includes an elevator door, a door frame and a door lock unit installed on the door frame; the elevator door is provided with a door lock hole corresponding to the door lock unit, and the door frame is provided with a door lock installation position corresponding to the elevator door for installing the door lock unit; the door lock unit includes a lock shell 1, a lock tongue 4 arranged in the lock shell 1, a door lock connecting rod driving the lock tongue 4 to move, and a driving mechanism driving the door lock connecting rod to move; the driving mechanism includes a driving motor 51, a driving screw rod 52 and a moving block 7; the door lock connecting rod includes a lock tongue arm 22 linked to the lock tongue 4, a rotating arm 21 linked to the moving block 7 and a rotating part 23 connecting the rotating arm 21 and the lock tongue arm 22; the door lock connecting rod drives the lock tongue 4 to extend or retract into the lock shell 1.

[0024] The lock housing 1 is provided with a mounting seat for installing the driving mechanism, and the mounting seat includes an upper fixing plate 61, a lower fixing plate 62 and a limiting column 63 arranged between the upper fixing plate 61 and the lower fixing plate 62; the driving screw 52 can be rotatably sleeved between the upper fixing plate 61 and the lower fixing plate 62; the driving motor 51 is connected to the driving screw 52 through a linkage.

[0025] The driving screw rod 52 is provided with a threaded portion 53 , and one side of the moving block 7 is provided with a threaded tooth block 71 screwed to the threaded portion 53 ; a limiting groove corresponding to the rotating arm 21 is provided inside the moving block 7 .

[0026] The moving block 7 is liftably mounted on the limiting column 63; the linkage member is a gear set.

[0027] The lock housing 1 is provided with a rotating seat 3 for installing a door lock connecting rod; the rotating portion 23 can be rotatably arranged on the rotating seat 3; the lock tongue 4 is provided with guide blocks 42 corresponding to the lock tongue arm 22 and distributed on both sides of the lock tongue arm 22; each of the guide blocks 42 is circular and has an elastic layer on the outer side; a guide column 12 corresponding to the lock tongue 4 is provided in the lock housing 1, a limiting sleeve block 41 is provided at the end of the lock tongue 4, and the lock tongue 4 is sleeved on the guide column 12.

[0028] Contact switches 11 are correspondingly distributed in the lock housing 1 , and a trigger block 43 distributed between the contact switches 11 is connected below the lock tongue 4 .

[0029] As attached Figure 2-4 As shown, the door lock safety circuit includes a detection circuit, a hall door lock feedback circuit and a car door lock feedback circuit; the hall door lock feedback circuit and the car door lock feedback circuit are both connected in series with the detection circuit; the hall door lock feedback circuit and the car door lock feedback circuit are both provided with intermediate relays; the signal detector of the detection circuit is respectively connected to the intermediate relays of the hall door lock feedback circuit and the car door lock feedback circuit.

[0030] By adding an intermediate relay to each hall door lock feedback loop and car door lock feedback loop, the signal of the intermediate relay of each hall door lock feedback loop or car door lock feedback loop can be detected while ensuring that the original function of the detection loop remains unchanged. Through signal detection, it can be quickly determined which floor hall door or car door is not closed properly, which can quickly locate and solve the problem conveniently.

[0031] The door lock safety circuit of the present application effectively solves the problem that the traditional detection circuit cannot determine which hall door or car door is not closed properly, resulting in a malfunction and inability to operate. The staff needs to check and confirm each level, which is a huge workload and seriously affects the use.

Claims

1. A safety door lock system for a manual door elevator, characterized in that: The invention comprises a door lock structure and a door lock safety circuit; the door lock structure comprises an elevator door, a door frame and a door lock unit installed on the door frame; the elevator door is provided with a door lock hole corresponding to the door lock unit, and the door frame is provided with a door lock installation position corresponding to the elevator door for installing the door lock unit; the door lock unit comprises a lock housing (1), a lock tongue (4) arranged in the lock housing (1), a door lock connecting rod for driving the lock tongue (4) to move, and a driving mechanism for driving the door lock connecting rod to move; the driving mechanism comprises a driving motor (51), a driving screw rod (52) and a moving block (7); the door lock connecting rod comprises a lock tongue arm (22) linked to the lock tongue (4), a rotating arm (21) linked to the moving block (7) and a rotating part (23) connecting the rotating arm (21) and the lock tongue arm (22); the door lock connecting rod drives the lock tongue (4) to extend or retract into the lock housing (1).

2. A safety door lock system for a manual door elevator according to claim 1, characterized in that: The lock housing (1) is provided with a mounting seat for mounting a driving mechanism, the mounting seat comprising an upper fixing plate (61), a lower fixing plate (62) and a limiting column (63) arranged between the upper fixing plate (61) and the lower fixing plate (62); the driving screw rod (52) is rotatably sleeved between the upper fixing plate (61) and the lower fixing plate (62); the driving motor (51) is connected to the driving screw rod (52) through a linkage member.

3. A safety door lock system for a manual door elevator according to claim 1, characterized in that: The driving screw rod (52) is provided with a threaded portion (53), and one side of the moving block (7) is provided with a threaded tooth block (71) threadedly connected to the threaded portion (53); a limiting groove corresponding to the rotating arm (21) is provided inside the moving block (7).

4. A safety door lock system for a manual door elevator according to claim 2, characterized in that: The moving block (7) is liftably sleeved on the limiting column (63); and the linkage member is a gear set.

5. A safety door lock system for a manual door elevator according to claim 1, characterized in that: The lock housing (1) is provided with a rotating seat (3) for mounting a door lock connecting rod; the rotating portion (23) is rotatably arranged on the rotating seat (3); the lock tongue (4) is provided with guide blocks (42) corresponding to the lock tongue arm (22) and distributed on both sides of the lock tongue arm (22); each of the guide blocks (42) is circular and has an elastic layer on the outer side; a guide column (12) corresponding to the lock tongue (4) is provided in the lock housing (1), a limiting sleeve block (41) is provided at the end of the lock tongue (4), and the lock tongue (4) is sleeved on the guide column (12).

6. A safety door lock system for a manual door elevator according to claim 1, characterized in that: Contact switches (11) are correspondingly distributed in the lock housing (1), and a trigger block (43) distributed between the contact switches (11) is connected below the lock tongue (4).

7. A safety door lock system for a manual door elevator according to claim 1, characterized in that: The door lock safety circuit includes a detection circuit, a hall door lock feedback circuit and a car door lock feedback circuit; the hall door lock feedback circuit and the car door lock feedback circuit are both connected in series with the detection circuit; the hall door lock feedback circuit and the car door lock feedback circuit are both provided with intermediate relays; the signal detector of the detection circuit is respectively connected to the intermediate relays of the hall door lock feedback circuit and the car door lock feedback circuit.

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