Elevator parking fire-fighting lock
By designing an elevator fire lock integrating fire switches and lei locks, using specific key control circuit switches, the safety hazards and management problems of damage to elevator lei locks and fire switches in the prior art are solved, and the problem of inconvenience in management is realized. Higher security and management convenience.
Patent Information
- Application Number
- CN202421423298.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-20
- Publication Date
- 2025-02-25
- Estimated Expiration
- 2034-06-20
AI Technical Summary
The existing elevator elevator locks and fire switches have safety risks of intentional damage by non-professionals, and the management is inconvenient, so the fire lock box and the fire lock key need to be managed separately.
Design an elevator fire lock, including a lock core, a paddle and at least two sets of circuit switches. The circuit switch is controlled by a specific key, and the fire switch and the elevator lock are integrated to ensure that only a specific key can open the corresponding switch.
Effectively prevent the elevator fire lock from being deliberately damaged by others, simplifies the management of the administrator and improves the safety and management convenience of the elevator.
Smart Images
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Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of elevators, in particular to an elevator parking fire lock. Background Art
[0002] In recent years, with the advancement of urbanization and the improvement of residents' living standards, elevators have become an indispensable vertical transportation tool for people's production and life. People are paying more and more attention to the safety, reliability, stable performance, good comfort, energy saving and environmental protection, and elevator safety of elevators. Each elevator hall is usually equipped with a parking lock and a fire switch. The parking lock has only two gears: "reset" and "park". When the key is turned to the "park" gear, the elevator automatically stops at the base station and then cuts off the power to facilitate maintenance personnel to enter the elevator for maintenance; after the maintenance is completed, turn the key to the "reset" gear to operate normally. Pressing the fire switch can trigger the fire alarm and notify the rescue personnel to go to the rescue in time; at the same time, the emergency landing function of the elevator can be activated, so that the elevator can quickly stop at the base station, providing convenience for rescue personnel. The setting of parking locks and fire switches is conducive to ensuring the timely maintenance and safe operation of elevators.
[0003] Please refer to the prior art parking lock and fire switch Figure 1 The fire switch 2 and the parking ladder lock 3 of the prior art are respectively arranged on the panel 1, wherein the fire switch 2 is a push button switch, which is arranged in a fire lock box made of plastic or glass to prevent passengers from accidentally touching it; the parking ladder lock 3 is made of metal and is switched on and off by a designated key.
[0004] However, when the fire switch of the prior art is needed, the fire lock box must be destroyed before the fire switch can be pressed; it may also be intentionally destroyed by non-professionals, which may bring safety hazards to passengers in the elevator; after the fire lock box is destroyed, a new fire lock box needs to be installed to restore the original function, which consumes manpower and material resources. In addition, since the fire switch and the parking ladder lock have different opening methods, the fire lock box and the parking ladder lock keys need to be managed respectively, so the existing fire switch and parking ladder lock also have the disadvantage of inconvenient management. Utility Model Content
[0005] Based on this, the purpose of the utility model is to overcome the defects or shortcomings of the prior art and provide an elevator parking fire lock, including a lock cylinder, a paddle and at least two sets of circuit switches; the paddle is connected to the tail end of the lock cylinder and can rotate coaxially with the lock cylinder, the circuit switch is arranged on the rotation path of the paddle, the paddle controls the on and off of the circuit switch, and the circuit switch is connected to the control system of the elevator.
[0006] The elevator parking ladder fire lock described in the utility model requires a specific key to open the corresponding switch, which can prevent deliberate damage by others; in addition, the fire switch and the parking ladder lock can be integrated together, which has the advantage of being convenient for administrators to manage.
[0007] Furthermore, the circuit switch comprises an electric contact and a contact point; the electric contact is elastic, one end of which is fixed on a circuit board of the elevator control system, and the other end of which is located directly above the two contacts at the circuit board disconnection point.
[0008] Furthermore, the circuit switches are provided in two groups, one group is used to control the on-off of the circuit of the fire switch, and the other group is used to control the on-off of the circuit of the elevator parking system.
[0009] Furthermore, it also includes a lock body, in which the lock core is embedded; two groups of circuit switches are centrally symmetrically arranged on both sides of the center of the lock body, and the two groups of circuit switches are located on the same horizontal plane.
[0010] Furthermore, it also includes a limit block arranged corresponding to the circuit switch, and the position where the paddle rotates to the position just above the electric contact corresponding to the circuit switch is the end of the paddle rotation path, and the limit block is arranged at the end position of the paddle rotation path.
[0011] Furthermore, it also includes a reset gear limit block, which is a retractable limit block and is arranged at a middle position of the paddle rotation path.
[0012] Furthermore, it also includes a key that cooperates with the lock core; the lock core includes a rotating part and a fixed part, the rotating part is provided with a plurality of pins inserted therein, and the same number of pins are inserted and arranged on the fixed part, the pins of the rotating part and the fixed part are relatively arranged at positions on the same axis, and the fixed part is also provided with a spring; the key is inserted into the lock core, compresses the spring and moves the position of the pins in the fixed part, the pins on the fixed part and the rotating part are connected at the interface between the rotating part and the fixed part, so that the rotating part can rotate axially.
[0013] Furthermore, it also includes a shell, the shell is provided with a cavity structure, and the lock core, the paddle, the circuit switch, the limit block, the reset gear limit block and the lock body are arranged in the cavity structure of the shell.
[0014] Furthermore, the circuit board is electrically connected to the control system of the elevator via an electric wire, and a pin is provided at the end of the electric wire.
[0015] Furthermore, the electric wire is led out from the cavity structure of the shell to the outside of the shell, and a section of heat shrink tube is provided on the outer surface of the electric wire, which is located outside the lead-out port of the shell.
[0016] In order to better understand and implement the present invention, the present invention is described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 A schematic diagram of a parking ladder lock and a fire switch in the prior art;
[0018] Figure 2 This is a schematic diagram of the structure of the elevator fire lock for this application;
[0019] Figure 3 A schematic diagram of the shifting structure of the elevator parking fire lock of this application;
[0020] Figure 4 The front view, rear view, top view and left view of the elevator fire lock for this application;
[0021] Figure 5 This is the front view and side sectional view of the lock core structure of the elevator parking fire lock of this application.
[0022] Figure numerals: lock cylinder 10 , rotating part 11 , fixing part 12 , pin 13 , spring 14 , lock body 20 , shift structure 30 , paddle 31 , circuit switch 32 , contact 321 , electric contact 322 , wire 34 , pin 341 , housing 40 , heat shrink tube 41 , key 50 . DETAILED DESCRIPTION
[0023] In view of the shortcomings of the fire switch and parking ladder lock in the prior art, the utility model of this application is to improve the parking ladder lock of the prior art with only two gears to three gears, integrate the functions of the fire switch and the parking ladder lock into one lock, and form the parking ladder fire lock of this application. Figure 2 The elevator parking fire lock of the present application includes a lock core 10, a lock body 20, a shift structure 30, a shell 40 and a key 50 matching the lock core 10.
[0024] The lock core 10 is provided with a keyhole, and the keyhole matches the key 50. One end provided with the keyhole is the head end of the lock core 10; the other end is the tail end. The tail end of the lock core 10 is connected to the shift structure 30. When the key 50 rotates, the shift structure 30 switches to the switch of the corresponding gear position to control the conduction or closing of the gear position.
[0025] Specifically, the lock core 10 is embedded in a lock body 20 whose shape matches that of the lock core 10, and the lock body 20 can protect the lock core 10 from being damaged. The lock core 10 and the lock body 20 are both made of materials such as copper and zinc alloy.
[0026] See also Figure 3, which is a schematic diagram of the shifting structure of the elevator parking fire lock of the present application. In some embodiments, the shifting structure 30 includes a paddle 31 and a circuit switch 32. The paddle 31 is connected to the tail end of the lock cylinder 10 and can rotate coaxially with the lock cylinder 10; the circuit switch 32 is connected to the control system of the elevator and is arranged on the rotation path of the paddle 31, and the paddle 31 controls the on and off of the circuit switch 32. The circuit switch 32 can be a push button switch. In this embodiment, the circuit switch 32 includes a contact 321 and an electric contact 322. The contact 321 is arranged at both ends of the circuit board of the elevator control system. The electric contact 322 is elastic, one end of which is insulated and fixed on the circuit board of the elevator control system, and the other end is located directly above the two contacts 321 at the circuit board break. The paddle 31 can be rotated to the position of the electric contact 322 and press the electric contact 322 downward, so that the electric contact 322 contacts the two contacts 321 on the circuit board, and the electric contact 322 is conductively connected to the contacts 321, thereby realizing the connection of the circuit; after the paddle 31 is rotated again to completely separate it from the electric contact 322, the electric contact 322 is also reset due to its elasticity, and the circuit is restored to the disconnected state. In order to prevent leakage, insulating material is provided on the contact surface between the paddle 31 and the electric contact 322, so that the paddle 31 and the electric contact 322 are insulated from each other.
[0027] In this embodiment, the elevator parking fire lock is provided with three gears, including the fire switch gear, the parking gear and the reset gear. Specifically, two groups of circuit switches 32 are provided, each group of circuit switches includes an electric contact piece 322 and a corresponding contact 321, one group is used to control the circuit on and off of the fire switch, and the other group corresponds to the circuit on and off of the elevator parking system. Since the circuit is disconnected after the paddle 31 leaves the electric contact piece 322, the reset gear is located between the fire switch gear and the parking gear. In some embodiments, multiple groups of circuit switches 32 corresponding to different elevator control systems can also be provided to achieve management and control of multiple gears in one lock.
[0028] It should be noted that the contact of the reset position of the present application is set as a normally open contact, and the corresponding circuit is connected when it is necessary to switch to the fire switch position or the parking position; the contact of the parking lock reset position of the prior art is a normally closed contact, and the circuit is disconnected when it is necessary to switch to the parking position, so multiple gears cannot be set. The normally open contact of the present application can meet the needs of multi-gear setting, and is safer than the normally closed contact of the prior art. It can remain open when there is no control signal, ensuring that the circuit is in a safe state under normal conditions, thereby reducing the risk of circuit short circuit.
[0029] Preferably, the two sets of circuit switches 32 are centrally symmetrically arranged on both sides of the center of the lock body 20, and the two sets of circuit switches 32 are located on the same horizontal plane. Such an arrangement enables the two sets of circuit switches 32 to be far apart, thereby avoiding accidental short circuits caused by discharge, breakdown, etc., and also avoids poor heat dissipation caused by excessive concentration of circuit components, thereby ensuring stable operation of the circuit board. In addition, the two sets of circuit switches 32 are arranged far apart, which also has the advantage of convenient maintenance.
[0030] The shifting structure 30 also includes a limit block (not shown), which can timely remind the administrator that the shifting is completed, so as to prevent the administrator from rotating the paddle 31 to a position other than directly above the electric contact 322 when rotating the key to shift the gear, resulting in uneven pressure of the electric contact 322 on the contact 321, and further causing safety hazards caused by poor contact between the two. Specifically, the limit block includes a reset gear limit block, a fire switch gear limit block and a parking gear limit block. The position directly above the electric contact 322 corresponding to the fire switch gear and the parking gear is the end of the paddle rotation path, and the fire switch gear limit block and the parking gear limit block are respectively set at the end positions of the two ends of the rotation path of the paddle 31; the reset gear limit block is set at the middle position of the rotation path of the paddle 31. Accordingly, the reset gear is set in the vertical direction of the lock body 20, and the gear corresponding to rotating the key 50 rightward or leftward 90° from the reset gear is the fire switch gear or the parking gear. Among them, the reset gear limit block is a retractable limit block. When the administrator rotates the key 50 corresponding to the lock cylinder 10, the external force applied by it can cause the paddle 31 to compress the retractable limit block, ensuring that the lock cylinder 10 can smoothly rotate in two directions from the reset gear; after the paddle 31 passes through the retractable limit block, the retractable limit block automatically resets. When the paddle 31 rotates to the fire switch gear limit block or the parking gear limit block, the administrator can feel the resistance of the limit block and stop applying external force, completing the shift of the fire switch gear or the parking gear. When the administrator rotates the key 50 from the fire switch gear or the parking gear position to the position of the retractable limit block, the administrator can feel the resistance of the retractable limit block and stop applying external force, completing the shift of the reset gear.
[0031] The circuit board of the shift structure 30 is electrically connected to the corresponding fire control module, parking module and reset module in the control system of the elevator through the wire 34. Figure 4 , which are the front view, rear view, top view and left view of the elevator parking fire lock of the present application. The end of the wire 34 is provided with a pin 341, and the pin 341 can be conveniently connected to the slots on the fire control module, parking module and reset module.
[0032] The housing 40 is provided with a cavity structure, and the lock core 10, the lock body 20, and the shift structure 30 are arranged in the cavity structure of the housing 40. The housing 40 is used to protect the lock core 10, the shift structure 30 and the lock body 20. The shift structure 30 and the lock body 20 can be fixed in the housing 40 by welding, screw fixing, etc. The wire 34 is led out from the cavity structure of the housing 40 to the outside of the housing 40 and connected to the control system. A section of heat shrink tube 41 is provided on the outer surface of the wire 34, which is located outside the lead-out port of the housing 40. The heat shrink tube 41 is used to fix and protect the wire 34.
[0033] See also Figure 5 , which are the front view and side sectional view of the lock core structure of the elevator parking ladder fire lock of the present application. In order to prevent the elevator parking ladder fire lock from being directly pried open by pliers, the lock core 10 of the present application specifically includes a rotating part 11, a fixed part 12, a pin 13 and a spring 14. A plurality of pins 13 are inserted into the rotating part 11, and the same number of pins are inserted into the fixed part 12. Each pin 13 on the rotating part 11 is arranged relative to a pin on the fixed part 12 at the same axial position. The spring 14 is arranged at the bottom of the pin 13 in the fixed part 12, and is used to reset the pin 13. A groove matching the position of the pin 13 on the rotating part is arranged on the key 50. When the correct matching key 50 is not inserted into the lock core 10, the pin 13 on the fixed part 12 penetrates into the rotating part 11, blocking the rotating part 11 so that it cannot rotate; the correct key 50 is provided with a groove matching the position of the pin 13. When the correct matching key 50 is inserted into the lock core 10, the spring 14 of the fixed part 12 is compressed, so that the pin position in the fixed part moves, and the pin 13 on the fixed part 12 and the rotating part 11 happens to contact the interface between the rotating part 11 and the fixed part 12. At this time, the rotating part 11 can rotate axially, that is, enter the unlocking state. The lock core 10 of the present application can prevent others from prying it open with simple tools such as pliers, and has the advantages of anti-theft and anti-destruction.
[0034] The working principle of the elevator parking fire lock of the present application is as follows: the key 50 is inserted into the keyhole at the head end of the lock cylinder 10. When the key 50 is turned to the parking position, the lock cylinder 10 and the paddle 31 at its tail end rotate accordingly, and the paddle 31 forms pressure on the electric contact 322, so that the electric contact 322 contacts the contact 321 corresponding to the parking position circuit, thereby realizing the conduction of the parking position circuit, and the parking module of the elevator control system controls the elevator to automatically park at the base station and then cut off the power to facilitate maintenance personnel to enter the elevator for maintenance; when the key 50 is turned to the reset position, the elevator resumes normal operation; when the key 50 is turned to the fire switch position, its specific working process is similar to the parking position, so that the fire control module circuit of the elevator control system is turned on, thereby triggering the fire alarm and notifying the rescue personnel to go to the rescue; at the same time, the emergency landing function activated by the elevator enables the elevator to quickly park at the base station, providing convenience for the rescue personnel.
[0035] Compared with the prior art, the elevator parking ladder fire lock of the present application requires a specific key to open the corresponding switch, which can prevent deliberate damage by others; in addition, the fire switch and the parking ladder lock are integrated together, which has the advantage of being convenient for administrators to manage. The lock core of the present application is provided with a structure of a pin spring arranged on a ring, which further improves the anti-theft level. The present application is also provided with a limit block for reminding the administrator that the gear shift is completed, so as to avoid the paddle rotating out of the position directly above the electric contact when rotating the key to shift gears, resulting in poor contact between the electric contact and the contact point, causing safety hazards.
[0036] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, and the utility model is also intended to include these modifications and modifications.
Claims
1. An elevator parking fire lock, characterized in that: It includes a lock core, a paddle and at least two sets of circuit switches; the paddle is connected to the rear end of the lock core and can rotate coaxially with the lock core, the circuit switch is arranged on the rotation path of the paddle, the paddle controls the on and off of the circuit switch, and the circuit switch is connected to the control system of the elevator.
2. The elevator fire lock according to claim 1, characterized in that: The circuit switch comprises an electric contact piece and a contact point; the electric contact piece is elastic, one end of which is fixed on the circuit board of the elevator control system, and the other end is located just above the two contact points at the circuit board disconnection point.
3. The elevator fire lock according to claim 2, characterized in that: The circuit switches are arranged in two groups, one group is used to control the on-off of the circuit of the fire switch, and the other group is used to control the on-off of the circuit of the elevator parking system.
4. The elevator fire lock according to claim 3, characterized in that: It also includes a lock body, in which the lock core is embedded; two groups of circuit switches are centrally symmetrically arranged on both sides of the center of the lock body, and the two groups of circuit switches are located on the same horizontal plane.
5. The elevator fire lock according to claim 4, characterized in that: It also includes a limit block arranged corresponding to the circuit switch, and the position where the paddle rotates to the position just above the electric contact piece corresponding to the circuit switch is the end of the paddle rotation path, and the limit block is arranged at the end position of the paddle rotation path.
6. The elevator fire lock according to claim 5, characterized in that: It also includes a reset gear limit block, which is a retractable limit block and is arranged at the middle position of the paddle rotation path.
7. The elevator parking fire lock according to claim 6, characterized in that: It also includes a key that cooperates with the lock core; the lock core includes a rotating part and a fixed part, the rotating part is provided with a plurality of pins inserted therein, and the same number of pins are inserted and arranged on the fixed part, the pins of the rotating part and the fixed part are relatively arranged at positions on the same axis, and the fixed part is also provided with a spring; the key is inserted into the lock core, compresses the spring and moves the position of the pins in the fixed part, the pins on the fixed part and the rotating part are connected at the interface between the rotating part and the fixed part, so that the rotating part can rotate axially.
8. The elevator parking fire lock according to claim 7, characterized in that: It also includes a shell, which is provided with a cavity structure, and the lock core, the paddle, the circuit switch, the limit block, the reset gear limit block and the lock body are arranged in the cavity structure of the shell.
9. The elevator parking fire lock according to claim 8, characterized in that: The circuit board is electrically connected to the control system of the elevator through an electric wire, and a pin is arranged at the end of the electric wire.
10. The elevator parking fire lock according to claim 9, characterized in that: The electric wire is led out from the cavity structure of the shell to the outside of the shell, and a section of heat shrink tube is provided on the outer surface of the electric wire, which is located outside the lead-out port of the shell.