CN201103278Y

CN201103278Y - No-load lock head

Info

Publication number: CN201103278Y
Application number: CNU2007200559270U
Authority: CN
Inventors: 骆国基
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-08-24
Filing date: 2007-08-24
Publication date: 2008-08-20
Anticipated expiration: 2017-08-24

Abstract

The utility model discloses an idling lock head which consists of a shell, a front lock core and a rear lock core. The front lock core which is arranged in the front and the rear lock core and at the back are sheathed inside the shell; the rear lock core is the unlocking main body, a plurality of ring belt grooves is opened at the front lock core, a lock blade and a spring are arranged in the ring belt groove, a recess is opened at the back of the lock blade and a secondary marble groove is opened at the position corresponding to the recess; secondary marbles are arranged inside the secondary marble groove; a plurality of lugs are arranged at the margin of the secondary marbles and the front end of the lug is connected with the back of the lock blade; a front clutch pin groove is opened at the tail of the front lock core while a rear clutch pin groove is opened at the rear lock core corresponding to the front clutch pin groove, and clutch pins and return springs are arranged inside the rear clutch pin groove; a locking groove is opened at the shell and corresponding to the rear clutch pin groove. The front lock core and the rear lock core are separated with each other when the lock is closed; the front lock core can be rotated freely while the lock is kept locked, thus effectively preventing the lock from being unlocked by force with special tools and having high anti-theft performance.

Description

A kind of idle-run lock head

Technical field:

The utility model relates to a kind of lock, especially idle-run lock head.

Background technology:

The majority that uses at present is cylinder lock, by housing be enclosed within the housing rotating lock core and pellet shot from a slingshot and form.On lock core and housing, have corresponding pellet shot from a slingshot hole vertically, a spring is housed, a housing pellet shot from a slingshot, a lock core marble in each hole.Under blocking, housing pellet shot from a slingshot insertion lock core in various degree is stuck in lock core can not be rotated.The lock of this structure, when lock core is inserted when reversing as brute force from keyhole by special instrument, the pellet shot from a slingshot that stops lock core to rotate can be twisted off, and makes this lock by unnormal unlocking, thereby loses anti-theft feature.

Summary of the invention:

The purpose of this utility model provides a kind of idle-run lock head that can overcome existing defective in the prior art.Its adopts front and back lock core structure, and under blocking, preceding lock core can rotate arbitrarily and lock and be not unlocked.Can effectively defend the brute force of special instrument to unblank, theftproof greatly improves.

The utility model is achieved by the following technical solution:

It is by housing, preceding lock core, formations such as rear lock core, before lock core front and back lock core after be enclosed within the housing, rear lock core is the main body of unblanking, have some annular grooves at preceding lock core, put into locking plate and spring in the groove, the back side of locking plate has one or more notch, be in preceding lock core corresponding to the locking plate notch and have secondary bullet groove vertically, built-in secondary pellet shot from a slingshot has some projections on the limit of secondary pellet shot from a slingshot, the front end of projection is connected with the back side of locking plate, clutch cotter way before preceding lock core afterbody has, have clutch cotter way in back at rear lock core corresponding to preceding clutch cotter way place, built-in on-of pin and return spring have lock slots at housing corresponding to back clutch cotter way place.

The lock core of the utility model idle-run lock head is made up of preceding lock core and rear lock core, and during expense, forward and backward lock core is connected as a single entity, and the twisting key just can drive rear lock core by preceding lock core will lock unlatching; Under the blocking, forward and backward lock core separates, and preceding lock core can rotate arbitrarily and lock and be not unlocked, and can effectively defend the brute force of special instrument to unblank, and theftproof greatly improves.

Description of drawings:

Fig. 1 is the cross sectional representation of first embodiment of the utility model.

Fig. 2 is the sectional view of Fig. 1.

Fig. 3 is the sectional view of the unlocking condition of Fig. 1, first embodiment shown in Figure 2.

Fig. 4 is the front view of locking plate of the present utility model.

Fig. 5 is the left view of Fig. 4.

Fig. 6 is the front view of secondary pellet shot from a slingshot of the present utility model

Fig. 7 is the left view of Fig. 6.

Fig. 8 is the vertical view of Fig. 6.

Fig. 9 is the vertical view of on-of pin of the present utility model.

Figure 10 is the cross sectional representation of preceding lock core of the present utility model.

Figure 11 is the left view of Figure 10.

Figure 12 is the front view of rear lock core of the present utility model.

Figure 13 is the sectional view of Figure 12.

Figure 14 is the structural representation of second embodiment of the utility model.

Figure 15 is the structural representation of the 3rd embodiment of the utility model.

Figure 16 is the structural representation of the 4th embodiment of the utility model.

Figure 17 is the structural representation of the 5th embodiment of the utility model.

The specific embodiment:

Fig. 1-3 illustrated embodiment idle-run lock head, by housing 1, preceding lock core 2, rear lock core 3 formations such as grade, preceding lock core 2 is preceding, rear lock core 3 after, be enclosed within the housing 1, rear lock core 3 is the main body of unblanking, have some annular grooves 4 at preceding lock core 2, every annular groove 4 is put into 15, two locking plates 5 of a spring, and the back side of locking plate 5 has one or more notch 14, be in preceding lock core 2 corresponding to notch 14 and have two secondary bullet groove 6 vertically, the afterbody of lock core 2 before secondary bullet groove 6 extends to, every secondary bullet groove 6 is put into 7 one of secondary pellets shot from a slingshot, and some projections 17 are arranged on the limit of secondary pellet shot from a slingshot 7, the front end of projection 17 is connected with the back side of locking plate 5, clutch cotter way 16 before preceding lock core 2 afterbodys have has back clutch cotter way 8, built-in on-of pin 9 and return spring 10 at rear lock core 3 corresponding to preceding clutch cotter way 16 places, have lock slots 10 at housing 1 corresponding to back clutch cotter way 8 places, have collar groove 11 at preceding lock core 2 afterbodys, housing has collar groove 12 in the position of correspondence, puts into collar 13.When unblanking, under the effect of key, locking plate 5 moves, the notch 14 at its back side is all to chief and vice pellet shot from a slingshot 7, and on-of pin 9 and secondary pellet shot from a slingshot 7 move together under the effect of return pellet shot from a slingshot spring 10, and the front end of secondary pellet shot from a slingshot 7 enters notch 14, lock core 2 before the front end of on-of pin 9 inserts, between lock core 2 and the rear lock core 3, lock slots 10 is withdrawed from the rear end of on-of pin 9 before being stuck in, and at this moment twists key and just can will lock unlatching by preceding lock core 2 drive rear lock cores 3.During locking, locking plate 5 moves under the effect of spring 15, and its notch 14 departs from secondary pellet shot from a slingshot 7, the top is compeled secondary pellet shot from a slingshot 7 and is moved backward, secondary pellet shot from a slingshot 7 promotes on-of pin 9, and the front end of on-of pin 9 withdraws from preceding lock core 2, and preceding lock core 2 separates fully with rear lock core 3, preceding lock core 2 is in idling conditions, the rear end of on-of pin 9 enters the lock slots 10 of housing 1, forms lock-out state, at this moment, lock core 2 before non-lock key or other foreign matters insert and can rotate, but can not unblank.

Shown in Figure 14 is second embodiment of the present utility model, and the difference of first embodiment is as follows shown in it and Fig. 1-3: secondary pellet shot from a slingshot 7 is disjunctors.

Shown in Figure 15 is the 3rd embodiment of the present utility model, and the difference of it and first, second embodiment is as follows: on-of pin 9 is an oblique angle type, and running orbit is oblique

Figure 16.Shown in be the 4th embodiment of the present utility model, the difference of it and first, second, third embodiment is as follows: put into 15, one locking plates 5 of a spring in each annular groove 4, be equipped with a secondary pellet shot from a slingshot 7.Figure 17.Shown in be the 5th embodiment of the present utility model, the difference of it and first, second, third, fourth embodiment is as follows: put into 15, one locking plates 5 of a spring in each annular groove, be equipped with two secondary pellets shot from a slingshot 7.

Claims

1. idle-run lock head, it is by housing, preceding lock core, formations such as rear lock core, it is characterized in that: preceding lock core is preceding, rear lock core after, be enclosed within the housing, rear lock core is the main body of unblanking, have some annular grooves at preceding lock core, put into locking plate and spring in the groove, the back side of locking plate has notch, and lock core has secondary bullet groove vertically before being in corresponding to the locking plate notch, put into secondary pellet shot from a slingshot in the groove, on the limit of secondary pellet shot from a slingshot some projections are arranged, the front end of projection is connected with the back side of locking plate, clutch cotter way before preceding lock core afterbody has, have clutch cotter way in back at rear lock core corresponding to preceding clutch cotter way place, put into on-of pin and return spring in the groove, in housing, the place has lock slots corresponding to back clutch cotter way.

2. according to the described idle-run lock head of claim 1, it is characterized in that: respectively have the collar groove that matches each other at preceding lock core and housing, be provided with fixed card ring in the collar groove.