CN2514072Y

CN2514072Y - Worm and wormwheel type clutch for digital intelligent lock

Info

Publication number: CN2514072Y
Application number: CN 01257585
Authority: CN
Inventors: 廖华
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-12-19
Filing date: 2001-12-19
Publication date: 2002-10-02
Anticipated expiration: 2011-12-19

Abstract

A worm wheel clutch for digital intelligent lock includes a shell 1 and a sleeve 11 which are distributed symmetrically in a guide groove, the sleeve 11 is provided with a sliding ring 2, a guide rib is arranged in the sliding ring 2 and a boss 21 is distributed symmetrically out of the sliding ring, the right side of the shell 1 is provided with a micro motor 3. The utility model is characterized in that a worm wheel component 4 is socketed on the sliding ring 2 and is provided with a boss 41 which is corresponding to the boss 21; the left side of the outer circumference of the worm wheel component is provided with sector wheel teeth 42 and the right side is provided with a stop block 43; the left side of the shell 1 is provided with a worm 5 which is engaged with the sector wheel teeth 42; the central shaft of the worm 5 is fixedly connected with a driving wheel 6; a sliding gear 7 is socketed on the central shaft of the worm 5 and leans on the driving wheel 6 by a spring 8; a gear reducing device consisting of gears 31, 32, 33 is arranged between the main shaft gear of the micro motor 3 and the sliding gear 7. The utility model is characterized in that the service life of the battery is increased by more than two times, the startup is powerful, the sound is clear cut, the working quality is stable and the installation is convenient.

Description

A kind of digital intelligent lock Worm-gear type clutch

The mechanical part of using on a kind of safe-guard door lock of technical field.

Background technology has a kind of digital intelligent safe-guard door lock in the market, as long as the key of band password is near lockhole, identification chip in the lockhole promptly sends instruction, the micro machine action, drive is installed in the clutch operating between door handle and the spring bolt mechanism, door handle and spring bolt mechanism are combined as a whole, and this moment, swing handle could be opened door.Otherwise clutch is in the disconnection situation, and promptly door handle separates with spring bolt mechanism, and swing handle all can not be opened door in any case.Digital intelligent is locked general use spring clutch now, it is to utilize the micro motor for driving gear, gear driven is equipped with the axle of spring, by rotation compression spring, drive shifting block by the pin on the axle, make with internal perisporium that shifting block links to each other on the sleeve deflection certain angle of boss is arranged, boss jack-up sliding ring on it, the movable shaft coupling piece of sliding ring jack-up spring bolt mechanism, and it is bumped in the dead bolt, thus door handle and spring bolt mechanism are combined as a whole.

There is following defective in the spring clutch:

1, consumed power is bigger, needs supply voltage to remain on 4.8 volts of above ability operate as normal.

2, in the length of spring compressed process, reaction force is ascending, intermittent movement takes place easily or gets stuck.

3, slipping ring pushes movable shaft coupling piece when bumping card, does not have the obvious sound, is difficult for judging whether clutch moves.

The summary of the invention the purpose of this utility model provides a kind of Worm-gear type clutch, and it is strong to accomplish to be swift in motion, and the sound is clear-cut, and consumed power is little, prolongs battery application life.

The technical solution of the utility model is as follows: be rotated in the forward when instruction when identification chip sends, the micro machine main shaft is rotated in the forward, and its rotary speed drives the balladeur train that is enclosed within on the worm screw central axis through mechanical reduction gear.Balladeur train is abutting against on the drive that is solidified as a whole with the worm screw central axis under the effect of spring.Balladeur train and drive are in contact with one another boss and pit respectively on the face, balladeur train drives drive by being in contact with one another of boss and pit and worm screw is rotated in the forward, and the worm screw rotation drives quadrant tooth positive deflection 40～45 degree on the Worm-gear assembly.At this moment, the boss on the boss jack-up sliding ring periphery wall on the Worm-gear assembly internal perisporium forces sliding ring toward 2.5～3 millimeters of outer displacements, and the movable shaft coupling piece that pushes spring bolt mechanism bumps into dead bolt, and this moment, rotatable handles was opened door.Simultaneously, make Worm-gear assembly stop deflection because of the limited block on the Worm-gear assembly is blocked by motor cabinet with it, worm screw also stops the rotation; balladeur train will dally on drive by the compression spring; back gear idle running, thus the protection micro machine does not damage, and realizes overload protection.

When identification chip sends the reverse rotation instruction, micro machine drives the worm screw reverse rotation by mechanical reduction gear and balladeur train, reverse deflection 40～45 degree of quadrant tooth on the Worm-gear assembly, at this moment the boss on the sliding ring falls into the recessed place on the Worm-gear assembly internal perisporium, be that sliding ring is toward 2.5～3 millimeters of intrinsic displacements, with it simultaneously movable shaft coupling piece under the effect of elastic force followed by sliding ring displacement back and be separated from dead bolt, promptly swing handle can not have been opened door.After one to two second, identification chip will send the instruction that stops operating, the micro machine stall.

Compared with the prior art, the utility model has following characteristics:

1, battery increases application life

Because of essentially no power attenuation, promptly power attenuation is very little, and supply voltage is lower than 4.2 volts still can operate as normal, thereby prolongs more than 2 times the application life of battery.

2, startup is strong and powerful, and the sound is clear-cut, and work quality is stable

Owing to adopt the worm and gear transmission, work quality is stable, and transmission precision is reliable, and is strong and powerful, can make the displacement of slipping ring and movable shaft coupling piece clear-cut rapidly, and the sound is clear-cut, and the people is easy to judge the operating state of clutch.

3, easy for installation

Description of drawings Fig. 1 is a Worm-gear type clutch master pseudosection;

Fig. 2 is the Worm-gear assembly front view;

Fig. 3 is the Worm-gear assembly top plan view;

Fig. 4 is a Worm-gear assembly left side pseudosection;

Fig. 5 is the sliding ring front view;

Fig. 6 is the sliding ring vertical view;

Fig. 7 is a sliding ring left side pseudosection;

Fig. 8 is the sliding ring upward view;

Fig. 9 is the housing rear elevation.

The specific embodiment is described concrete structure of the present utility model and operating principle in detail below in conjunction with drawings and Examples.

Present embodiment includes housing 1 and is positioned at the axle sleeve 11 that three symmetrical distribution gathering sills are arranged on the periphery wall at housing 1 middle part, be set with sliding ring 2 on the axle sleeve 11, have on sliding ring 2 internal perisporiums and corresponding three guiding ribs of axle sleeve 11 gathering sills, three symmetrical distribution boss 21 are arranged on the periphery wall, on the housing 1 right motor seat 12 micro machine 3 is housed, difference is that Worm-gear assembly 4 is sleeved on the sliding ring 2, have corresponding protruding on Worm-gear assembly 4 internal perisporiums to opposite boss 41 with boss 21, on the periphery wall of left side quadrant tooth 42 is arranged, limited block 43 is arranged on the periphery wall of right side, limited block 43 is between two motor cabinets 12, the worm screw 5 that is meshed with quadrant tooth 42 is equipped with in housing 1 left side, be connected with the drive 6 of surface band pit on worm screw 5 central axiss, balladeur train 7 is sleeved on worm screw 5 central axiss and is abutting against under the effect of spring 8 on the drive 6, on balladeur train 7 and the drive 6 contacted surfaces corresponding boss is arranged, worm screw 5 central axis two ends are equipped with baffle plate 9 and snap ring 10 respectively, are equipped with by gear 31 between micro machine 3 mainshaft gears and the balladeur train 7,32,33 deceleration devices of forming.

Operating principle is as follows: in the time of need opening the door, with the close lockhole of the key of band password, identification chip in the lockhole sends instruction immediately, give micro machine 3 input forward currents, micro machine 3 is rotated in the forward, drive balladeur train 7 rotations through mechanical reduction gear, balladeur train 7 drives worm screw 5 rotations by surperficial boss with contacting with friction effect of drive 6 surface craters, worm screw 5 is ordered about quadrant tooth 42 deflections 40～45 degree of Worm-gear assembly 4, at this moment the boss 41 of Worm-gear assembly 4 is with boss 21 jack-up of sliding ring 2, force sliding ring 2 to 2.5～3 millimeters of outer displacements, driving activity shaft coupling piece bumps in the dead bolt, be that handle combines as a whole in spring bolt mechanism, swing handle can be opened door.When quadrant tooth 42 deflections 40～45 were spent, limited block 43 was blocked by motor cabinet 12 simultaneously, and Worm-gear assembly 4 stops deflection, and worm screw 5 is stuck motionless, and balladeur train 7 will compress spring 8 and idle running on drive 6, and mechanical reduction gear and micro machine 3 dally simultaneously.

After spending for 8 seconds, identification chip will send instruction, give micro machine 3 input reversing the currents, micro machine 3 reverse rotations, after slowing down, drive balladeur train 7 reverse rotations, drive 6 and worm screw 5 reverse rotation thereupon, order about quadrant tooth 42 deflection back 40～45 degree of Worm-gear assembly 4, at this moment the boss 21 of sliding ring 2 will fall into the recessed place of Worm-gear assembly 4 internal perisporium convex platforms 41, be that sliding ring 2 is to 2.5～3 millimeters of intrinsic displacements, be close to the movable shaft coupling piece of sliding ring 2 and will follow displacement back under elastic reaction and be separated from dead bolt, promptly swing handle can not have been opened door.After one second, identification chip will send stall instruction, micro machine 3 stalls.

Claims

1, a kind of digital intelligent lock Worm-gear type clutch, include housing (1) and be positioned at the axle sleeve (11) that the symmetrical distribution gathering sill is arranged on the periphery wall at housing (1) middle part, be set with sliding ring (2) on the axle sleeve (11), have on sliding ring (2) internal perisporium and the corresponding guiding rib of axle sleeve (11) gathering sill, symmetrical distribution boss (21) is arranged on the periphery wall, micro machine (3) is housed on housing (1) the right motor seat (12), it is characterized in that Worm-gear assembly (4) is sleeved on the sliding ring (2), have corresponding protruding on Worm-gear assembly (4) internal perisporium to opposite boss (41) with boss (21), on the periphery wall of left side quadrant tooth (42) is arranged, limited block (43) is arranged on the periphery wall of right side, limited block (43) is positioned between two motor cabinets (12), the worm screw (5) that is meshed with quadrant tooth (42) is equipped with in housing (1) left side, be connected with the drive (6) of surface band pit on worm screw (5) central axis, balladeur train (7) is sleeved on worm screw (5) central axis, and abutting against under the effect of spring (8) on the drive (6), on balladeur train (7) and the contacted surface of drive (6) corresponding boss is arranged, worm screw (5) central axis two ends are equipped with plate washer (9) and snap ring (10) respectively, are equipped with by gear (31) between micro machine (3) mainshaft gear and the balladeur train (7), (32), (33) mechanical reduction gear of Zu Chenging.