CN201209343Y

CN201209343Y - Lock head

Info

Publication number: CN201209343Y
Application number: CNU2008200486217U
Authority: CN
Inventors: 谭耀新
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-05-27
Filing date: 2008-05-27
Publication date: 2009-03-18
Anticipated expiration: 2018-05-27

Abstract

The utility model relates to an idling lock with simple structure and strong anti-theft performance, which comprises a key, a lock tube, a lock core and a marble group and is characterized in that an outer sleeve is sleeved on the lock tube and is axially positioned with the lock tube, and an inclined groove is arranged on the surface of the outer cylinder of the lock core; a guide positioning pin extending into the inclined groove is fixed on the inner wall of the lock tube, and a lock lever on the lock core extends out of the lock tube. When the key is inserted and rotated, a certain friction force exists between the lock tube and the outer sleeve and enables the lock core to axially move corresponding to the lock tube so as to drive the lock lever to stretch or retract and realize the locking of a lock mechanism by the lock lever. When the key is drawn out, because a flat marble of the marble group is arranged between the lock core and the lock tube, if the lock core is forcefully rotated, the lock tube can be driven to rotate, but the lock core can not stretch or retract so that the lock tube and the lock core can synchronously idle and can not be forcefully twisted to unlock the lock. The utility model has high anti-theft performance.

Description

Tapered end

Technical field

The utility model relates to a kind of tapered end, the tapered end that particularly a kind of lock core moves in opening process vertically.

Background technology

Existing tapered end comprises key, lock tube, lock core and hoodle group, lock tube entangles lock core, wherein the hoodle group is made up of flat pearl, the decorative pearl on top of an official cap, spring and envelope pearl, described flat pearl, spring and envelope pearl are positioned in the radial hole of lock tube from inside to outside, and the envelope pearl is fixed in this radial hole outermost, and the decorative pearl on top of an official cap is positioned at the radial hole of lock core, and flat pearl is suitable with decorative pearl on top of an official cap external diameter, radial hole on lock tube and the lock core be positioned at lock core shaft to the same position place, the effect of envelope pearl is that the afterbody to spring plays position-limiting action; After inserting key, tooth on the key is respectively with the decorative pearl on top of an official cap jack-up on the correspondence position, the decorative pearl on top of an official cap is the outside top and make interface between the decorative pearl on top of an official cap and the flat pearl between the interface of lock tube and lock core of the flat pearl of the other end, thereby lock core can be unblanked with respect to lock tube rotation and realization; Lock core is rotated back into the decorative pearl on top of an official cap can extract key out over against flat pearl position, at this moment, flat pearl is inwardly pushed away under spring action and across between lock tube and the lock core, lock core can not be rotated with respect to lock tube, thereby realizes locking.The shortcoming of existing this tapered end is that theftproof performance is not high, if the human instrument of unblanking inserts keyhole and then firmly twisting, then the flat pearl between lock core and lock tube might be cut off or turns round bad, thereby make lock core rotate and unblank with respect to lock tube.

Summary of the invention

The purpose of this utility model is that the theftproof performance that exists in the existing tapered end is not high in order to solve, lock core is turned round bad problem easily, and a kind of simple in structure, idle-run lock head that theftproof is strong is provided.

The purpose of this utility model is achieved in that a kind of tapered end, comprise key, lock tube, lock core and hoodle group, it is characterized in that described lock tube is with overcoat outward, axial location between overcoat and the lock tube, the outer cylinder surface of described lock core is provided with drift slot, be fixed with the guide positioning pin that stretches in the described skewed slot on the inwall of described lock tube, the locking bar on the described lock core stretches out outside the lock tube; Utilize vertically flexible of locking bar and realize locking and unblank.

Described tapered end is characterized in that the outer cylinder of lock tube is provided with cannelure, puts outside described and is fixed with the alignment pin that stretches in this cannelure.Its effect is an axial location between lock tube and the overcoat.

Described tapered end is characterized in that described lock tube external surface is provided with blind hole, and this blind hole order is from inside to outside placed spring and friction post.Its effect is the frictional force that increases between lock tube and the overcoat.

Owing to adopted technical scheme described in the utility model, after key inserted keyhole, key, lock core is with key turns the time, at this moment, because the interface of the flat pearl and the decorative pearl on top of an official cap just in time is positioned on the interface of lock core and lock tube, and there is certain frictional force between lock tube and the overcoat, so the lock core skewed slot on its outer surface and the effect of the guide finger of lock tube, lock core is done axial displacement with respect to lock tube, the locking bar that stretches out lock tube and overcoat afterbody moves with lock core and contracts to lock tube, thereby makes the locking mechanism release, and realizes unblanking; Lock core is resetted, locking bar stretches out and locking mechanism is sealed, realize locking, extract key then, then described flat pearl is between lock tube and lock core, if insert keyhole and rotate foreign object with foreign object this moment, then lock core can be with lock tube to rotate synchronously, and the locking bar on the lock core is not made axial stretching, so the lock core of this moment and lock tube are realized idle running.

Description of drawings

The utility model is described in further detail below in conjunction with drawings and Examples.

Fig. 1 is the three-dimensional exploded view of an embodiment of tapered end described in the utility model.

Fig. 2 is the assembly drawing of Fig. 1 embodiment.

Fig. 3 has taken the stereoscopic figure behind the overcoat away among Fig. 2.

Fig. 4 is the stereogram of another angle of Fig. 2.

Fig. 5 is the schematic diagram of Fig. 4 when being in unlocking condition.

Among the figure.1, overcoat, 102, inner chamber, 101, the hole, 204, through hole, 201, cannelure, 44, the envelope pearl, 43, spring, 42, flat pearl, 41, the decorative pearl on top of an official cap, 3, lock core, 301, breach, 304, through hole, 302, skewed slot, 303, locking bar, 203, through hole, 23, the friction post, 22, spring, 2, lock tube, 21, guide finger, 202, hole, 11, alignment pin, 0, keyhole.

The specific embodiment:

Seeing shown in Figure 1ly, is the three-dimensional exploded view of an embodiment of tapered end described in the utility model, and it comprises key (not drawing among the figure), lock tube 2, lock core 3 and five groups of hoodle groups, the hole 102 in the lock tube entangle lock core 3 external surface both be slidingly matched; Wherein every group of hoodle group is respectively by envelope pearl 44, spring 43, the flat pearl 42 and the decorative pearl on top of an official cap 41 constitute, each hoodle group is placed on respectively in the radial direction through

hole

204 and 304 of lock tube 2 and lock core 3, each hoodle group is the same to the sealed principle of lock tube and lock core with existing tapered end, unique distinction of the present utility model is to be provided with skewed slot 302 on the external surface of lock core, guide positioning pin 21 stretches in this skewed slot 302 after passing hole 202 on the lock tube, inner chamber 102 in the overcoat 1 entangle lock tube 2 external surface both be slidingly matched, surround keyhole (seeing the keyhole 0 among Fig. 2) between through hole 203 inwalls of breach 301 on the lock core and lock tube; Fig. 3 has taken the stereoscopic figure behind the overcoat away among Fig. 2, alignment pin 11 stretches in the cannelure 201 of lock tube as can be seen from Fig. 3, and the spring in Fig. 1 22 and friction post 23 are put into the outer state of lock tube when surperficial that be exposed at of friction post 23 after the blind hole of lock tube external surface and also can be seen from Fig. 3.

Principle: after key inserted keyhole, key, lock core is with key turns the time, at this moment, because the interface of the flat pearl and the decorative pearl on top of an official cap just in time is positioned on the interface of lock core and lock tube, and under the effect of spring 22 in Fig. 1 and spring stack 23, there is enough frictional force between lock tube and the overcoat and lock tube is not rotated with lock core, but under the skewed slot 302 and the effect of the guide finger 21 of lock tube of lock core in Fig. 1, lock core is done axial displacement with respect to lock tube, the locking bar that stretches out lock tube and overcoat afterbody moves with lock core and contracts to lock tube as shown in Figure 5, thereby makes the locking mechanism release, and realizes unblanking.

Schematic diagram when Fig. 4 is blocking, as can be seen from Fig. 4, at this moment, it is long and block locking mechanism that the locking bar 303 that links to each other with lock core stretches out the outer length of overcoat 1, and the locking bar 303 when being in unlocking condition among Fig. 5 stretches out overcoat 1 outer length and lacks (locking bar 303 contracts to overcoat and lock tube direction) and separate with locking mechanism.

Claims

1, a kind of tapered end, comprise key, lock tube, lock core and hoodle group, it is characterized in that described lock tube is with overcoat outward, axial location between overcoat and the lock tube, the outer cylinder surface of described lock core is provided with drift slot, be fixed with the guide positioning pin that stretches in the described skewed slot on the inwall of described lock tube, the locking bar on the described lock core stretches out outside the lock tube.

2, according to the described tapered end of claim 1, it is characterized in that the outer cylinder of lock tube is provided with cannelure, outside described, put and be fixed with the alignment pin that stretches in this cannelure.

3, according to claim 1 or 2 described tapered ends, it is characterized in that described lock tube external surface is provided with blind hole, this blind hole order is from inside to outside placed spring and friction post.