CN2041707U

CN2041707U - Door lock with indicating three states function

Info

Publication number: CN2041707U
Application number: CN 88206927
Authority: CN
Inventors: 王彩霞; 金慧生
Original assignee: Individual
Current assignee: Individual
Priority date: 1988-06-16
Filing date: 1988-06-16
Publication date: 1989-07-26

Abstract

The utility model discloses a door lock with indicating three states function, which is formed by increasing some parts on the basis of the existing door lock. The door lock can be used in places where the triple indication states are needed, such as the train toilet, etc. The triple states can be 'nobody in the room' (lock opened), 'someone in the room' (lock from inside), 'out of service' (lock from outside), etc. The utility model has the advantages of simple structure, low cost, firm and durable structure, fearlessness of shock and fearlessness of the electric interference. Besides, the door lockset has the function of the triple states signal remote transmission.

Description

Door lock with indicating three states function

This door lock is contained on the door of train washroom, can make the passenger correctly understand the mode of occupation of washroom

At present, the door lock of train washroom only has the function of indication two states.I.e. " unmanned in the room " (lock is opened), " people is arranged in the room " (lock is shut).When train entered the station soon, the attendant need stop using the washroom from key lock being shut outdoors.After train was leaving from station, the attendant opened lock with key again, allowed to use the washroom.But, sometimes train leave the station for a long time after, the attendant has forgotten to open door lock, and door lock is still indicated " people is arranged in the room ".The passenger is hard to tell very someone or the attendant has forgotten to open door lock of washroom, and offending thing usually takes place.

When being used for the train washroom, this door lock can indicate three kinds of states, i.e. " unmanned in the room ", " people is arranged in the room ", " stopping using ".By the remote transfer signal of door lock, the passenger can understand the mode of occupation of washroom on the seat, must not come and go and walk about, and has reduced the occupant and has flowed.

This door lock is the main shaft outer end at original door lock, increases part and constitutes.Fig. 1 is a front view, and Fig. 2 is a structure chart, and Fig. 3 is cam A, and Fig. 4 is cam B, and Fig. 5 is the direction board schematic diagram.1_ shell wherein, 2_ base plate, 3_ magnetic switch, the 4_ bar magnet, 5_ direction board, 6_ cam B, the 7_ linkage pin, 8_ cam A, 9_ locating wheel, 10_ main shaft, the 11_ snap ring, the 12_ spring, 13_ spring center axle 14_ retainer spring, 15_ axle sleeve.

The operating principle of this door lock is as follows: see Fig. 1, Fig. 2, Fig. 3, Fig. 4.

Wherein the outside of locating wheel is circular, and locating shoulder is arranged above, endoporus is a polygon, be enclosed within on the main shaft, the center of rotation of cam A is a circular hole, and a location shoulder is arranged, this shoulder matches with shoulder on the locating wheel, can stop locating wheel to move vertically, cam A is enclosed within on the locating wheel, and is free to rotate, 2 locating holes are arranged on the cam A, locating hole A is to the top edge of cam A, and along the circumferential direction thickness reduces gradually, and the opposite side in hole to locating hole B thickness strengthens gradually, so that alignment pin can slip over locating hole A from the top edge of cam A, enter locating hole B, locating hole B to the lower limb of cam A along the circumferential direction thickness reduce gradually so that alignment pin can enter locating hole B from the below of cam A, the center of rotation of cam B is a polygonal hole (identical with the main shaft shape), cam B goes up and cam A upward has a location pin-and-hole in the corresponding place of locating hole B, and an alignment pin is arranged in the hole, and spring is housed on the alignment pin.

1, unmanned in the room, lock is opened.Cam A and cam B all are positioned at horizontal level, so the printed words of " unmanned in the room " expose from the slot of shell.

2, in the room people is arranged, and when the inside shuts.Main shaft 90 degree that turn right of lock because spindle end is leg-of-mutton profile, also have on the cam B one tri-angle-holed, and be enclosed within on the main shaft, so cam B is also driven 90 degree that turn right by main shaft.Cam B is in vertical position, with the direction board jack-up that makes progress.The second row word " has the people " on the direction board in the room, exposes from the slot of shell.

3, in the room people is arranged, and when unblank in the inside.Main shaft 90 degree that turn left of lock, and drive cam B 90 degree that also turn left.Cam B gets back to horizontal level, and direction board is also got back to extreme lower position, and the printed words of " unmanned in the room " expose from the slot of shell again.

When 4, shutting with key from the outside, key just can be enclosed within 90 degree that turn right on the main shaft after at first cam B being compressed into.After cam B is pressed into, move backward along main shaft.Linkage pin on the cam B enters in the pin-and-hole of cam A simultaneously.Like this, linkage pin is main shaft and cam A, and cam B is connected as a single entity.Cam A has circular hole, and is enclosed within on the locating wheel.The endoporus of locating wheel is a triangle, is enclosed within on the main shaft.The outside of locating wheel is circular, so, after cam A is enclosed within on the locating wheel, can freely rotate.Main shaft turned right for 90 degree time, cam A and cam B 90 degree that also turn right.Cam A pushes up the extreme higher position to direction board, and the third line word " is stopped using " from the slot of shell and exposed on the direction board.After key was pulled up from main shaft, cam B got back to the outer end of main shaft under the effect of spring.Simultaneously, linkage pin also withdraws from from the pin-and-hole of cam A.Cam A keeps the upright position under the effect of retainer spring.

5, shut in the room after, open the lock with the key from the outside if desired.This moment, cam A was a horizontal level, and cam B is the upright position.With key cover 90 degree that turn left on main shaft, cam B is compressed into by key, and 90 degree that also turn left are simultaneously got back to horizontal level.Direction board also drops to extreme lower position, indication " unmanned in the room ".After cam B is compressed into by key, the linkage pin above it will be run into base plate.Because linkage pin can move axially in the pin-and-hole on the cam B, so can not hinder cam B moving along major axes orientation.When cam B turns left the 60 degree left and right sides, linkage pin will be run into the edge of cam A, because the edge of cam A is a ramped shaped, so linkage pin can continue along the slope to move, and can not hinder the rotation of cam B.

6, in order to guarantee not malfunction of cam A, the navigation system of being made up of retainer spring, spring center axle and axle sleeve is housed on base plate.

7, the front of direction board can be " unmanned in the room " with the triplex row word, " people is arranged in the room ", " stopping using ".There is a bar permanent magnet at the back side of board.On the base plate of lock, two magnetic switch are housed.Magnetic switch is subjected to the control of bar permanent magnet and break-make.Thereby, the signal of three kinds of states can be carried out teletransmission.

8, in order to reduce the outer cover height of lock, available other two kinds of methods are by the dress direction board.As Fig. 5.

A, cam A are identical with cam B diameter and respectively drive a direction board and move up and down, and the direction board 2 that cam B drives is positioned at the front of the direction board 1 that cam A drives.When cam A and cam B were horizontal level, two direction boards were extreme lower position.The first half of direction board 2 is exposed, indication " unmanned in the room ".A is positioned at horizontal level when cam, and when cam B was positioned at the upright position, direction board 2 was by jack-up, and the first half of direction board 1 is exposed from the slot of the latter half of direction board 2, indication " people is arranged in the room ".When cam A and cam B were the upright position, direction board 1 and direction board 2 were all by jack-up.The latter half of direction board 1 is exposed from the slot of the latter half of direction board 2, indication " stopping using ".

B, cam A drive direction board 1 or and its be connected as a single entity, cam B drive direction board 2 or and its be connected as a single entity.They all are to move around main axis rotation.When cam A and cam B all were positioned at horizontal level, the right half part of direction board 2 exposed (at this moment, cam A and cam B can do circular or other shape), indication " unmanned within doors ".B is positioned at the upright position when cam, and when cam A was positioned at horizontal level, direction board 2 was spent to right rotation 90 by cam B, and the right half part of direction board 1 exposes from the scallop hole of the left-half of direction board 2, indication " people is arranged within doors ".When cam A and cam B are the upright position, direction board 1, direction board 2 90 degree that all turned right, the left-half of direction board 1 is exposed from the scallop hole of the left-half of direction board 2, indication " stopping using ".

Claims

1, a kind of door lock with three kinds of status functions of indication, it is characterized in that, on the main shaft outer end of lock two cams, a locating wheel and a spring are housed, and by these two cam driven direction boards, indicate three kinds of different conditions, the navigation system of retainer spring, spring center axle, axle sleeve composition is housed on the base plate of lock, and the magnet that is equipped with on the base plate on two magnetic switch and the direction board is formed the status signal remote transmitting system.

2, a kind of door lock according to claim 1 with three kinds of status functions of indication, it is characterized in that, the outside of locating wheel is circular, and locating shoulder is arranged above, endoporus is a polygon, is enclosed within on the main shaft, and the center of rotation of cam A is a circular hole, and a location shoulder is arranged, this shoulder matches with shoulder on the locating wheel, can stop locating wheel to move vertically, and cam A is enclosed within on the locating wheel, free to rotate, 2 locating holes are arranged on the cam A, and locating hole A is to the top edge of cam A, and along the circumferential direction thickness reduces gradually, the opposite side in hole strengthens gradually to locating hole B thickness, locating hole B to the lower limb of cam A along the circumferential direction thickness reduce gradually.The center of rotation of cam B is a polygonal hole (identical with the main shaft shape), and cam B goes up and cam A upward has a location pin-and-hole in the corresponding place of locating hole B, and an alignment pin is arranged in the hole, and spring is housed on the alignment pin.

3, a kind of door lock with three kinds of status functions of indication according to claim 1 is characterized in that the direction board of indicating status has three kinds of mounting meanss: (as Fig. 5)

A. one have two direction boards, cam A and cam B drive direction board 1 respectively and direction board 2 moves up and down.

B. one have two direction boards, direction board 1 is driven by cam A or is connected as a single entity with it, and direction board 2 is driven by cam B or is connected as a single entity with it, moves around main axis rotation.(at this moment, cam A and cam B can do circular or other shape)

C. have only a direction board, cam A and cam B can both make its rising or decline.