CN2220513Y

CN2220513Y - Special type safety spring lock and its key

Info

Publication number: CN2220513Y
Application number: CN 94239269
Authority: CN
Inventors: 孙忠琦
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-08-27
Filing date: 1994-08-27
Publication date: 1996-02-21
Anticipated expiration: 2004-08-27

Abstract

The utility model relates to a special safety spring lock which is characterized in that a rotary core shaft is arranged in the central circular hole of a lock core, a plurality of spring mechanisms in the lock core and a lock core body which form a lock are arranged in a spiral line shape, and a key hole in the lock core is a key slot in a spiral line shape. The external form of a key which is matched with the special safety spring lock is like a multi-head drill bit and can be divided into two sections or three sections, so that the key can be stored respectively. The utility model has good anti-theft performance and can prevent that the spring of the lock core is prized by a steel wire or a skeleton key and the lock core is damaged by the drill bit, and the key of the utility model can not be sampled and duplicated, and the safety performance is high. The utility model is especially suitable for being used on safety devices, such as the safe of industrial and commercial enterprises, the dollar case of banks, etc.

Description

Special policies cylinder lock and key thereof

The utility model relates to lockset, refers to a kind of insurance cylinder lock set especially.

Existing cylinder lock set constitutes by lock housing, dead bolt, locking mechanism and the tapered end be made up of lock core with keyhole and lock core body, and billiard mechanism one to one is housed mutually in lock core and the lock core body.According to length that is arranged on pellet shot from a slingshot in the tapered end and quantity, arrange by various combination, constitute different lockset, reach tool lock and have only a corresponding key.Existing cylinder lock its be arranged in the tapered end one-tenth row billiards structure all with lock core shaft in the same way, the row billiards structure be arranged in a straight line abreast with keyhole, the billiards structure that becomes to be listed as have one be listed as, two row, four row billiards structures are also arranged.This multiple row billiards structure is distributed on the circumferential wall of lock core and lock core body.Though existing this cylinder lock has certain antitheft, safety effect, can not stop the burglar.The inventor had once done than sufficient investigation the picking lock means, draw, for cylinder lock, the picking lock person is except stirring from crack between a door and its frame with instrument dead bolt unblanks, mainly be on tapered end, to try every possible means, the one, with iron wire or " master key " put in keyhole and go to stir pellet shot from a slingshot and unblank; The 2nd, with bad lock core of bit drills, make lock core lose blocking function because of dropping out pellet shot from a slingshot.Lockset with multiple row billiards structure is than the lockset that has only single-row billiards structure, its repetitive rate is much lower, safe, but billiards structure arranged in a straight line does not still stop the surreptitiously superb burglar of skill, and, the cylinder lock of existing these structures can't prevent the violence damage means at all, and it is easy especially particularly to make lockset lose blocking function with drill bit destruction lock core.Just because this, the cylinder lock of these structures also must add that other insurance institution assists when the safety lock on strongbox, security door.And, also must prevent during lockset as insurance " defalcate " possibility, but the cylinder lock of general lock head structure can not prevent the behavior of copy key.

The purpose of this utility model is for a kind of insurance cylinder lock of unique construction is provided, make the thief stir pellet shot from a slingshot or to destroy tapered end from keyhole with instrument, also can't copy key, have only the key of using through the manufacturer production of national security security department approval that matches with the utility model lockset to open lockset.

The utility model of realizing above-mentioned purpose is the same with existing cylinder lock, the tapered end that also includes lock housing, dead bolt, locking mechanism and form by lock core with multiple row billiard mechanism and lock core body, the design's characteristics are to have a circular hole at the center of lock core, be provided with a rotating mandrel in this center hole, the degree of depth of the length of mandrel and this lock core center hole adapts, and the diameter of mandrel is less than the diameter of lock core center hole.The effect one of mandrel is the position of dropping of restriction pellet shot from a slingshot, and promptly pellet shot from a slingshot falls when the lock core center hole after extracting key, and the core axle bumper is lived when dropping down onto the mandrel place; The 2nd, reduced the space of stirring of crime, promptly have only a very little gap (wall thickness that is equivalent to key) between the interior circle of lock core center hole and the mandrel cylindrical, it is just very difficult to remove to stir pellet shot from a slingshot with instruments such as iron wires; The 3rd, anti-violence destroys, because this mandrel energy freely rotate, then when with the bit drills lock core hole, drill bit is at first run into the mandrel head, the result, and the rotation of drill bit just drives mandrel and does to rotate with one heart, so drill bit does not advance lock core hole with regard to boring.The design's another characteristics be on the lock core from the periphery of center hole initial outwards have direct-axis to spiral yarn shaped key, this spiral yarn shaped key extends to the rear end from the lock core front end, be shaped on the groove bottom spaced, in order to the pellet shot from a slingshot hole of pellet shot from a slingshot to be installed, correspondingly be shaped on the lock core body with lock core on the pellet shot from a slingshot hole one to one, in order to the pellet shot from a slingshot hole of pellet shot from a slingshot and spring to be installed.

The spiral yarn shaped billiards structure of arranging of above-mentioned this set on lock core and lock core body can be row or a multiple row, when having the spiral yarn shaped billiards structure of multiple row, is distributed on the circumference of lock core and lock core body; Consider that from structure and use this spiral yarn shaped billiards structure preferably is provided with three row or six row.

The key that matches with above-mentioned lockset is a kind of spiral yarn shaped key of special construction, consists predominantly of key main body, sleeve and caudal peduncle.The key main body is a hollow cylinder, and the internal diameter of this cylinder body matches with the external diameter of sleeve, is raised with tooth bar linear in the shape of a spiral and have bullet groove at its apical margin on the outer peripheral face of main body.The pitch of this spiral yarn shaped tooth bar, helical pitch and a number are corresponding with spiral yarn shaped key on the lock core.The front end of sleeve has a locking flange, and the rear end is shaped on screw thread; The internal diameter of sleeve matches with axle diameter in being arranged on the lock core center hole; The length of sleeve slightly is longer than the length of key main body.The key main body is nested with back being set in the afterbody place in the caudal peduncle and with setscrew nut on the sleeve and locks, and promptly becomes a complete key.

For preventing interior robber, this key can be made into two sections or three stage structure with same helix parameter, then when after the lockset locking, it is two sections or three sections that this key can one be torn open, the relevant personnel respectively get one section keeping, in the time will unblanking, close up assembling to two sections that take care of respectively or three sections, promptly be spendable key.

Advantage of the present utility model is very obvious, is arranged on a rotating mandrel at lock core center, and the boring that can resist any drill bit destroys; The billiards structure of spiral yarn shaped arrangement setting can break the picking lock, and the person stirs pellet shot from a slingshot to reach the attempt of picking lock purpose with instrument.Because, by the bullet of spiral yarn shaped arrangement more inward by just having concealment more, even can not find the position of pellet shot from a slingshot, the person can't pry open this lockset with the mode of dial-up to the property offered an explanation that is difficult to of this pellet shot from a slingshot position with regard to making the picking lock.Having is this spiral yarn shaped and segmentation structure of key again, and making under general condition can't copy key.Therefore, the utility model is specially adapted to place and the purposes that strict defendances such as industrial and commercial enterprises' safety cabinet, bank vault, the keeping of national important department classified papers are maintained secrecy.

A typical case of the present utility model implements to revolve for example shown in the accompanying drawing.

Description of drawings:

Fig. 1 is the transverse sectional view of the utility model tapered end part;

Fig. 2 is the longitudinal sectional view of the utility model tapered end part;

Fig. 3 is the longitudinal sectional view of key in the utility model;

Fig. 4 is the B-B sectional drawing of Fig. 3.

Below in conjunction with the accompanying drawing illustrated embodiment the utility model is described specifically.

The lock housing of present embodiment, dead bolt, locking mechanism are identical with general common cylinder lock.Seen that by Fig. 1, Fig. 2 its lock core 4 of the tapered end of present embodiment is arranged on the center of lock core body 8, the center of lock core 4 has a circular hole 3 that connects.On the lock core 4 from 360 degree of circular hole 3 circumferential outer have six uniform and with axial helical key 6, be evenly equipped with the pellet shot from a slingshot hole that connects lock core 4 outer circumference surfaces on the groove bottom, the installation pellet shot from a slingshot of unblanking in the pellet shot from a slingshot hole.In the present embodiment, be evenly equipped with 5 pellet shot from a slingshot holes on each spiral yarn shaped key 6 A1, A3, the A5 bottom land, 4 pellet shot from a slingshot holes are all arranged on each key A2, A4, the A6 bottom land, the pellet shot from a slingshot span at the bottom of the adjacent slot is provided with.Seen that by Fig. 2 place the mandrel 5 that an end has the rotating support face in the center hole 3 of lock core 4, the length of mandrel 5 and the degree of depth of lock core hole adapt, diameter is less than the aperture.It is uniform and with the axial pellet shot from a slingshot hole of the perforation of linear array in the shape of a spiral that 360 degree of lock core body 8 have six row on the circumference, pellet shot from a slingshot and spring are installed in this pellet shot from a slingshot hole, and spiral yarn shaped key and pellet shot from a slingshot hole site are corresponding one by one on the pellet shot from a slingshot hole site that is provided with on the position of helix and each helix and the lock core 4.

For easy for installation, be with the overcoat 7 of a close-fitting on the periphery of the lock core body 8 in the present embodiment, in order to the fixing position of billiard mechanism.

The key of opening above-mentioned lockset as shown in Figure 3, Figure 4.Key profile in the present embodiment mainly is made of key main body 11, sleeve 12 and caudal peduncle 10 as a drill bit.Key main body 11 is a hollow cylinder, is raised with the tooth bar 9 (bullet groove is not drawn in the drawings) that wire, edge in the shape of a spiral have bullet groove on the outer peripheral face of this cylinder-shaped body.Please consult key sectional view shown in Figure 4 simultaneously, match, have six on cylinder-shaped body 11 peripheries of this key and be the uniform spiral yarn shaped tooth bar 9 of 60 degree with the present embodiment lock head structure.Seen by Fig. 3 that again key main body 11 is nested with on sleeve 12, these sleeve 12 front ends have a locking flange, the inclined-plane smooth connection of shape inclined-plane and each tooth bar head outside the flange, and the rear end of sleeve 12 is shaped on screw thread.The internal diameter of sleeve 12 matches with mandrel 5 diameters that are arranged on lock core 4 centers, and the length summary degree of sleeve 12 is in the length of key main body 11.After key main body 11 is nested with on sleeve 12 so, is set in the caudal peduncle 10 and in the afterbody place and locks with setscrew nut.Sleeve 12 usefulness steel materials in the present embodiment are made.Key main body 11 is divided into two sections (can be made as three sections in a further embodiment), and two sections key main bodys are contained on the sleeve 12 and with becoming a complete key after the nut check; Unclamp nut, extract the key main body, and after taking off from sleeve 12, then two sections key main bodys can be by two people keeping, anyone can't open lockset.The spiral yarn shaped key of this segmentation structure is difficult to sampling and duplicates, so its safety is also just high especially.

Claims

1, a kind of special policies cylinder lock, the tapered end that includes lock housing, dead bolt, locking mechanism and be made of lock core with multiple row billiard mechanism and lock core body is characterized in that:

A, has a circular hole (3) at the center of lock core (4), be provided with a rotating mandrel (5) in this center hole (3), the degree of depth of the length of mandrel (5) and this lock core center hole (3) adapts, and the diameter of mandrel (5) is less than the diameter of lock core center hole (3);

B, lock core (4) go up from the periphery of center hole (3) initial outwards have direct-axis to spiral yarn shaped key (6), this spiral yarn shaped key (6) extends to the rear end from lock core (4) front end, have on the groove bottom be spaced, in order to the pellet shot from a slingshot hole of pellet shot from a slingshot to be installed; Correspondingly on lock core body (8), have with lock core (4) go up the pellet shot from a slingshot hole one to one, in order to the pellet shot from a slingshot hole of pellet shot from a slingshot and spring to be installed.

2, according to the described cylinder lock of claim 1, it is characterized in that being arranged on spiral yarn shaped billiards structure of arranging on lock core (4) and the lock core body (8) can be row or a multiple row, when having the spiral yarn shaped billiards structure of multiple row, is distributed on the circumference of lock core (4) and lock core body (8).

3, according to claim 1 or 2 described cylinder locks, it is characterized in that preferably three row or six row of said multiple row billiards structure.

4, a kind of key that matches with the described insurance cylinder lock of claim 1 is characterized in that including key main body (11), sleeve (12) and caudal peduncle (10), wherein

A, key main body (11) is a hollow cylinder, is raised with the tooth bar (9) that has bullet groove with the last corresponding wire in the shape of a spiral of spiral yarn shaped key (6) of lock core (4), edge on the outer peripheral face of this cylinder-shaped body (11);

B, said sleeve (12) front end has a locking flange, and the rear end is shaped on screw thread, and the internal diameter of sleeve (12) matches with mandrel (6) diameter that is arranged on lock core (4) center, and the length of sleeve (11) slightly is longer than the length of key main body (11);

C, key main body (11) is nested with last back being set in the caudal peduncle (10) and with setscrew nut in the afterbody place of sleeve (12) and locks.

5, according to the described key of claim 4, it is characterized in that key main body (11) combines by having same pitch, lead angle and a number two sections or three sections main bodys.