Simple elevator lock

Abstract

The utility model discloses a simple elevator lock which comprises a shell, a driving mechanism, a pull rope, a spring bolt, a moving contact assembly and a static contact assembly, the static contact assembly is fixedly installed in the shell, and the moving contact assembly is assembled with the spring bolt; the driving mechanism comprises a motor and a driving wheel, and the driving wheel is connected with the motor; the spring bolt is installed in the shell to form a telescopic structure, and the spring bolt is connected with the driving mechanism through the V-shaped frame. One end of the pull rope is connected with the driving wheel, the other end of the pull rope is connected with the V-shaped frame, and the pull rope and the driving wheel form a structure in which the motor directly drives the V-shaped frame to rotate. The driving wheel is directly connected with the flexible pull rope on the shell, and the pull rope is directly connected with the V-shaped frame, so that transition transmission structures such as a gear, a rack and a pull rod do not need to be arranged. The structure is further simplified, the number of parts is reduced, the cost is reduced, the requirement for the precision of the parts is lower, and the manufacturing cost of the parts is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of elevator equipment accessories, in particular to a lock for an elevator. Background Technique

[0002] The door lock is an extremely important safety protection device in the elevator. Only when it is determined that the door lock is in the unlocked state or the locked state, the elevator will perform actions such as opening the door, closing the door, and moving. The elevator door lock generally includes a lock tongue, a driving mechanism, moving and static contact components, etc. The driving mechanism drives the lock tongue to extend or retract into the lock body to achieve locking or unlocking. Currently, the elevator door locks on the market usually adopt a gear cooperating with a rack (or a pull rod) as the transmission structure. For example, the Chinese utility model patent CN215924117U applied by the applicant discloses an elevator single-door lock. However, adopting such a transmission structure results in a relatively complex product structure, a large number of required parts, and high precision requirements for the parts, causing the cost to increase. Summary of the Utility Model

[0003] Aiming at the deficiencies of the existing technology, the utility model provides a simple elevator lock with a simpler structure, lower precision requirements for parts, fewer required parts, and lower cost.

[0004] To solve the above technical problems, the utility model adopts the following technical scheme: A simple elevator lock includes a housing, a driving mechanism, a pull rope, a lock tongue, a moving contact component, and a static contact component. The static contact component is fixedly installed in the housing and has a signal communication connection with the elevator control system. The moving contact component is assembled with the lock tongue. The driving mechanism includes a motor and a driving wheel, and the driving wheel is connected to the motor. The lock tongue is installed in the housing to form a telescopic structure, and the lock tongue is connected to the driving mechanism through a V-shaped frame. It is characterized in that: one end of the pull rope is connected to the driving wheel, and the other end is connected to the V-shaped frame, forming a structure in which the motor directly drives the V-shaped frame to rotate through the pull rope and the driving wheel.

[0005] Further, the driving wheel is an I-shaped wheel with a winding groove in the middle, and one end of the pull rope is fixed in the winding groove of the driving wheel to form a structure that can be wound around the driving wheel.

[0006] Further, the V-shaped frame is arranged between the motor and the lock tongue. The head end of the V-shaped frame is connected to the lock tongue, and the tail end of the V-shaped frame is close to the driving wheel. The pull rope is connected to the tail end of the V-shaped frame in a straight-line routing manner after being led out from the driving wheel. This can minimize the length of the pull rope and further reduce the cost.

[0007] Further, the lock tongue is installed in the housing through a guiding column, and a return spring is sleeved on the guiding column. One end of the return spring abuts against the housing, and the other end abuts against the lock tongue to form a structure for driving the lock tongue to reset and extend.

[0008] Further, a Z-shaped bracket is fixed on one side of the housing, and a manual unlocking mechanism is installed through the Z-shaped bracket. The manual unlocking mechanism is connected to a V-shaped frame.

[0009] Further, a decorative plate is provided on the side of the housing where the locking tongue extends. The exposed surface of the housing is covered by the decorative plate, making the lock more beautiful and tidy.

[0010] In the present utility model, a driving wheel is directly used in the housing to connect a flexible pulling rope, and the pulling rope is directly connected to the V-shaped frame. In this way, there is no need to set up transitional transmission structures such as gears, racks, and pull rods. This not only further simplifies the structure, reduces the number of parts, and lowers the cost, but also has lower precision requirements for the parts, which is beneficial to reducing the manufacturing cost of the parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 is a front structural schematic diagram of the present utility model;

[0012] Figure 2 is a back structural schematic diagram of the present utility model;

[0013] Figure 3 is a side structural schematic diagram of the present utility model;

[0014] Figure 4 is an internal structural schematic diagram of the present utility model.

[0015] In the figure, 1 is the housing, 2 is the motor, 3 is the driving wheel, 4 is the pulling rope, 5 is the V-shaped frame, 6 is the locking tongue, 7 is the return spring, 8 is the moving contact assembly, 9 is the static contact assembly, 10 is the decorative plate, and 11 is the Z-shaped bracket. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0016] In this embodiment, referring to Figures 1-4 , the simple elevator lock includes a housing 1, a driving mechanism, a pulling rope 4, a locking tongue 6, a moving contact assembly 8, and a static contact assembly 9. The static contact assembly 9 is fixedly installed in the housing 1 and has a signal communication connection with the elevator control system. The moving contact assembly 8 is movably assembled with the locking tongue 6. The driving mechanism includes a motor 2 and a driving wheel 3, and the driving wheel 3 is connected to the motor 2. The locking tongue 6 is installed in the housing 1 to form a telescopic structure, and the locking tongue 6 is connected to the driving mechanism through a V-shaped frame 5. One end of the pulling rope 4 is connected to the driving wheel 3, and the other end is connected to the V-shaped frame 5. A structure in which the motor 2 directly drives the V-shaped frame 5 to rotate is formed through the pulling rope 4 and the driving wheel 3.

[0017] The driving wheel 3 is an I-shaped wheel, which has a winding groove in the middle. One end of the pulling rope 4 is fixed in the winding groove of the driving wheel 3. When the driving wheel 3 rotates, the pulling rope 4 can be released from or wound in the winding groove.

[0018] The V-shaped frame 5 is arranged between the motor 2 and the locking tongue 6, the head end of the V-shaped frame 5 is connected to the locking tongue 6 through an axle pin, the tail end of the V-shaped frame 5 is close to the driving wheel 3, and the pull rope 4 is connected to the tail end of the V-shaped frame 5 in a straight line after being led out from the driving wheel 3. In this way, the length of the pull rope 4 can be reduced as much as possible, further reducing the cost.

[0019] The lock tongue 6 is installed in the housing 1 through a guide column, and a return spring 7 is sleeved on the guide column. One end of the return spring 7 abuts against the housing 1, and the other end abuts against the lock tongue 6 to form a structure for driving the lock tongue 6 to return and extend.

[0020] A Z-shaped bracket 11 is fixed on one side of the housing 1, and a cable of the manual unlocking mechanism is installed through the Z-shaped bracket 11, and the cable is connected to the V-shaped frame 5. In an emergency, the V-shaped frame 5 can be rotated by pulling the cable to achieve emergency unlocking. Of course, the structure of emergency unlocking itself belongs to the prior art and will not be described in detail here.

[0021] A decorative plate 10 is provided on one side of the housing 1 from which the lock tongue 6 extends. The decorative plate 10 covers the exposed surface of the housing 1, making the lock more beautiful and neat.

[0022] Under normal working conditions, when the motor 2 is powered on, the system controls the motor 2 to work, driving the driving wheel 3 to rotate forward, the driving wheel 3 drives the pull rope 4, and the pull rope 4 pulls the V-shaped frame 5 to rotate. The V-shaped frame 5 rotates to move the lock tongue 6 and the moving contact assembly 8 toward the unlocking direction, and the unlocking moving contact and the unlocking static contact are connected to achieve unlocking. At this time, the lock tongue 6 is retracted into the housing 1 and the reset spring 7 is in a compressed state.

[0023] When the motor 2 is powered off, the resetting spring 7 pushes the locking tongue 6 and the moving contact assembly 8 outward, thereby driving the V-shaped frame 5 to rotate in the opposite direction. The V-shaped frame 5 pushes the driving wheel 3 and the motor 2 in the opposite direction to rotate, and the locking moving contact and the locking static contact are connected to achieve locking. The coordination of the moving and static contacts is the prior art.

[0024] The present invention has been described in detail above. The above description is only a preferred embodiment of the present invention and should not limit the scope of implementation of the present invention. That is, all equivalent changes and modifications made within the scope of this application should still fall within the scope of the present invention.

Claims

1. A simple elevator lock, comprising a housing, a driving mechanism, a pulling rope, a locking tongue, a moving contact assembly and a static contact assembly. The static contact assembly is fixedly installed in the housing and has a signal communication connection with the elevator control system. The moving contact assembly is assembled with the locking tongue. The driving mechanism includes a motor and a driving wheel, and the driving wheel is connected to the motor. The locking tongue is installed in the housing to form a telescopic structure, and the locking tongue is connected to the driving mechanism through a V-shaped frame. It is characterized in that: One end of the drawstring is connected to the driving wheel, and the other end is connected to the V-shaped frame. A structure in which the motor directly drives the V-shaped frame to rotate is formed by the drawstring and the driving wheel.

2. The simple elevator lock according to claim 1, wherein: The driving wheel is an I-shaped wheel, which has a winding groove in the middle. One end of the drawstring is fixed in the winding groove of the driving wheel to form a structure that can be wound around the driving wheel.

3. The simple elevator lock according to claim 1, wherein: The V-shaped frame is arranged between the motor and the lock tongue. The head end of the V-shaped frame is connected to the lock tongue, and the tail end of the V-shaped frame is close to the driving wheel. After the drawstring is led out from the driving wheel, it is connected to the tail end of the V-shaped frame in a straight-line routing manner.

4. The simple elevator lock according to claim 1, characterized in that: The lock tongue is installed in the housing through a guide post. A return spring is sleeved on the guide post. One end of the return spring abuts against the housing, and the other end abuts against the lock tongue to form a structure for driving the lock tongue to reset and extend.

5. The simple elevator lock according to claim 1, characterized in that: A Z-shaped bracket is fixed on one side of the housing. The manual unlocking mechanism is installed through the Z-shaped bracket, and the manual unlocking mechanism is connected to the V-shaped frame.

6. The simple elevator lock according to claim 1, characterized in that: A decorative plate is arranged on the side of the housing where the lock tongue extends, and the exposed surface of the housing is covered by the decorative plate.

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