CN201265293Y - Lockset anti-theft device and key matching with the same - Google Patents

Abstract

The utility model provides an anti-theft device of a lock and a key thereof. The anti-theft device comprises an external sleeve (1), a middle sleeve (7) arranged in the external sleeve, and a small sleeve assembly arranged in the middle sleeve; the external sleeve, the middle sleeve and the small sleeve assembly are clamped and connected with each other by a lug, a bayonet lock and a slot; the small sleeve assembly comprises a small sleeve (14), a key handle bearing bolt (23), a limiting cover (26), a sealing piece (29) and a spring (32); the key handle bearing bolt (23) is provided with a pressing part (21) and a sliding pin (24); a spring hole (31) of the spring is arranged in a key handle inserting hole (22); the sealing piece (29) is arranged in the key handle inserting hole and can move up and down; the limiting cover is fixed on the right end of the small sleeve. The key thereof comprises a key piece (36) matching with the lock core, and a key handle (35), wherein, the left end of the key handle (35) is provided with a clamping lug (34) matching with the clamping groove (33) of the key handle inserting hole. The utility model has the advantages of simple structure, convenient use, low cost, high anti-theft performance and the like.

Description

The key of a kind of lock anti-theft device and adapted thereof

One, technical field

The utility model relates to the key of a kind of lock anti-theft device and adapted thereof.

Two, background technology

At present, the structure of known various locksets is made up of lock body, lock core, key, the shortcoming of such lockset maximum is that lock core hole is exposed at the lock body appearance outward, is easy to the crime one's share of expenses for a joint undertaking and with wire or other instrument lock is opened and entered the room and steal at the lockhole that exposes, and has certain potential safety hazard.

Three, utility model content

The purpose of this utility model provides and a kind ofly can overcome above-mentioned shortcoming, and the lockhole that lockset can be exposed is closed, and the key of totally enclosed lock anti-theft device of open and close lock process and adapted.

Lock anti-theft device of the present utility model comprises overcoat, middle cover, little cover assembly, cover inner chamber during described little cover assembly is sleeved on, and middle cover is sleeved on the overcoat inner chamber together with little cover assembly; Little cover assembly comprises little cover, holds the shank of the key pin, the limited cover, closure plate, the spring that penetrate chute is arranged, the described the shank of the key pin that holds has the press section, sliding pin, the shank of the key jack, with the spring eye of the shank of the key jack vertical connection, be respectively equipped with the chute that cooperates with closure plate at the two ends, the left and right sides of the shank of the key jack, closure plate is contained in the shank of the key jack, the two ends kink inserts in the chute, and closure plate can be up and down in the shank of the key jack; Describedly be arranged with for a short time and hold the inner chamber that the shank of the key pin matches, little cover profile is cylindrical, the arc surface of little cover have with hold the corresponding perforate in the shank of the key pin press section, with the outward flange and the bayonet lock of middle cover clamping, there are eccentric key hole and mobilizable draw ring in the left side; Described holding in the inner chamber that the shank of the key pin is installed in little cover, holding the shank of the key pin press section can be up and down at little cover tapping; Spring is contained in the spring eye, the spring upper end contacts with closure plate, and the lower end is fixed on little cover inner chamber lower wall, and limited cover is fixed on little cover right-hand member, the chute that penetrates of limited cover is stuck on the sliding pin that holds the shank of the key pin, make hold the shank of the key pin only can be up and down at little cover inner chamber assigned address; Be arranged with in described match with little cover penetrate inner chamber and inward flange, be provided with the draw-in groove with the clamping of little cover bayonet lock at middle cover inward flange place, also be provided with stopper at middle cover right-hand member and make the little cover can only be movable in middle cover; Described outer be arranged with cooperates with middle cover penetrate inner chamber, inward flange and draw-in groove, the screw that described overcoat right-hand member has and supporting installation cylinder plate face is fixed; Be with the outward flange with the clamping of overcoat inward flange in described, the bayonet lock that cooperates with the overcoat draw-in groove arranged at middle cover external surface.

Lock anti-theft device of the present utility model, described eccentric key hole with hold on the shank of the key pin the shank of the key jack when the playing level that exists together, enter the shank of the key jack for ease of key integral body, be provided with at the key hole periphery and be beneficial to the depression of pushing key.Can insert the shank of the key jack smoothly for the ease of key, described closure plate left end bending place is provided with the oblique angle, be pressed into little cover arc surface and when neat when holding the shank of the key pin press section, the shank of the key jack is on the position, axis, with the lock core hole of the lockset of the supporting installation level that exists together.

Described overcoat inner chamber is to penetrate to offer, the profile of overcoat is circular, square or other shapes, the inner chamber of overcoat is circular, square or other shapes, the profile of middle cover matches with the overcoat cavity shape, middle cover is installed in the overcoat, in during the inward flange clamping of outward flange and overcoat of cover, between overcoat right side and the middle cover right side generation have overcoat inner chamber section, the length of overcoat inner chamber section be the lock core of supporting installation effectively open key piece length 2/5 1 3/5 between.

Be arranged with the inner chamber that penetrates that cooperates with little cover in described, the cover inner chamber was equipped with stopper at middle cover right-hand member and makes little cover only in the activity of middle cover inner chamber during little cover assembly was installed in.When the inward flange clamping of the flange of little cover and middle cover, the also corresponding chucking of draw-in groove at the bayonet lock at little cover outward flange place and middle cover inward flange place, this moment, little cover can not rotate in middle cover, hold the shank of the key pin under the active force of spring, can upspring at little cover tapping in the press section, closure plate is also gone up bullet to the shank of the key jack upper wall simultaneously, thereby the shank of the key jack is closed; Simultaneously, between middle cover right side and little cover right side, produce have in cover inner chamber section, the length of this inner chamber section be the supporting installation of institute the effective unlatching of lock core key piece length 2/5 1 3/5 between; When little cover when middle cover inner chamber is movable, the draw-in groove of cover during the bayonet lock of little cover breaks away from, little cover can rotate in middle cover.

The total length of two inner chamber sections of above-mentioned overcoat inner chamber Duan Yuzhong cover inner chamber section is key piece equal in length that the lock core of supporting installation is effectively opened.

Hold the unlikely separate convex in the shank of the key pin press section for what make little cover assembly, the crime one's share of expenses for a joint undertaking is easy to knock or pull by force with instrument, and is contour in bayonet lock and press section that middle cover is set, and the draw-in groove of overcoat matches with the bayonet lock of middle cover.

A kind of key of and lock anti-theft device adapted, the right-hand member band tooth portion of this key is the key piece that mates with the lockset lock core, the left part of key is a shank of the key, the deep equality of the length of the shank of the key and the shank of the key jack, and the shank of the key left end has the card that matches with the card groove of the shank of the key jack protruding.

The device that will have the utility model structure is the coaxial installation of lockset of positive center of circle rotation with lock core hole, and is installed in lockset lockhole outside, will play splendid antitheft effect to lockset, and the crime one's share of expenses for a joint undertaking can't be carried out technical unlocking to lockset.Have simple in structure, easy operating, cost is low, the theftproof performance height, good anti-theft effect is waited until advantage.

Four, description of drawings

Fig. 1 is the generalized section of the utility model lock anti-theft device when opening;

Fig. 2 is the utility model lock anti-theft device STRUCTURE DECOMPOSITION schematic diagram;

Fig. 3 is that the utility model lock anti-theft device holds the shank of the key pin generalized section;

Fig. 4 is the structure chart of the utility model key.

1 is overcoat among the figure, the 2nd, and overcoat inward flange, the 3rd, overcoat inner chamber, the 4th, screw, the 5th, overcoat draw-in groove, the 6th, middle cover right-hand member stopper, the 7th, middle cover, the 8th, middle cover outward flange, the 9th, middle cover inward flange, the 10th, middle cover inner chamber, the 11st, middle cover bayonet lock, the 12nd, the draw-in groove at middle cover inward flange place, the 13rd, flush ring, the 14th, little cover, the 15th, little cover bayonet lock, the 16th, little cover inner chamber, the 17th, the position, chamber that limited cover is installed, the 18th, little cover perforate, the 20th, the depression of key hole periphery, the 21st, press section, the 22nd, the shank of the key jack, the 23rd, hold the shank of the key pin, the 24th, sliding pin, the 25th, the shank of the key jack right-hand member chute, the 26th, limited cover, the 27th, limited cover penetrates chute, and the 28th, key hole, the 29th, closure plate, the 30th, the shank of the key jack left end chute, the 31st, spring eye, the 32nd, spring, 33 are provided in a side of the card groove of the shank of the key jack, and 34 to be provided in a side of the card of the shank of the key left end protruding, the 35th, the shank of the key, the 36th, key piece.

Five, the specific embodiment

With reference to Fig. 1, Fig. 2, Fig. 3, Fig. 4, the utility model lock anti-theft device comprises overcoat 1, middle cover 7, little cover assembly, cover 7 inner chambers during described little cover assembly is sleeved on, and middle cover 7 is sleeved on overcoat 1 inner chamber together with little cover assembly; Little cover assembly comprises little cover 14, holds the shank of the key pin 23, the limited cover 26, closure plate 29, the spring 32 that penetrate chute 27 is arranged, the described the shank of the key pin 23 that holds has press section 21, sliding pin 24, the shank of the key jack 22, with the spring eye 31 of the shank of the key jack 22 vertical connections, have the chute 30,25 that cooperates with closure plate 29 at the two ends, the left and right sides of the shank of the key jack 22, closure plate 29 is contained in the shank of the key jack 22, the two ends kink inserts in the chute 30,25, and closure plate 29 can be up and down in the shank of the key jack 22; Described little cover 14 is provided with and holds the inner chamber 16 that the shank of the key pin 23 matches, the profile of little cover 14 is cylindrical, the arc surface of little cover 14 have with hold the 21 corresponding perforates 18 of the shank of the key pin press section and with the bayonet lock 15 of middle cover draw-in groove 12 clampings, the left side is provided with eccentric key hole 28 and mobilizable draw ring 13, and right-hand member is provided with the position, chamber 17 that matches with limited cover 26; Described holding in the inner chamber 16 that the shank of the key pin 23 is installed in little cover 14, holding the shank of the key pin press section can be up and down at little cover tapping; Spring 32 is contained in the spring eye 31, and spring 32 upper ends contact with closure plate 29, and the lower end is fixed on little cover 14 inner chambers 16 lower walls, and the chute 27 that penetrates of limited cover 26 is stuck on the sliding pin 24 that holds the shank of the key pin 23, and limited cover 26 is fixed on 17 places, position, chamber of little cover 14 right-hand members; In described cover 7 be provided with match with little cover 14 penetrate inner chamber 10, inward flange 9 and with the draw-in groove 12 of little cover bayonet lock 15 clampings, at middle cover 7 right-hand members stopper 6 is housed and makes the little cover 14 can only activity middle cover 7 in; Described little cover 14 is provided with the outward flange 19 with middle cover inward flange 9 clampings; Described overcoat 1 is provided with middle cover 7 and cooperates inner chamber 3, inward flange 2 and the draw-in groove 5 that penetrates, and has and the fixing screw 4 of supporting installation cylinder plate face at overcoat 1 right-hand member; Described middle cover 7 is provided with the outward flange 8 with the 2 corresponding clampings of overcoat inward flange, at middle cover 7 external surfaces the bayonet lock 11 that cooperates with overcoat draw-in groove 5 is arranged.

Lock anti-theft device of the present utility model, the key hole 28 of the off-centre of described little cover left side with hold the shank of the key jack 22 when playing on the shank of the key pin 23 level that exists together, enter the shank of the key jack 22 for ease of key integral body, be provided with at key hole 28 peripheries and be beneficial to the depression 20 of pushing key.Can insert the shank of the key jack 22 smoothly for the ease of key, described closure plate 29 left end bending places are provided with the oblique angle, be pressed into little cover arc surface and when neat when holding the shank of the key pin press section 21, the shank of the key jack 22 is on the position, axis, with the lockset lock core hole of the supporting installation level that exists together.

The inner chamber 3 of described overcoat 1 is to penetrate to offer, the profile of middle cover 7 matches with the inner chamber 3 of overcoat 1, the inward flange 2 of overcoat 1 cooperates with the outward flange 8 of middle cover to be offered, middle cover 7 is installed in the overcoat 1, when the outward flange 8 of central cover 7 and inward flange 2 clampings of overcoat 1, between overcoat 1 right side and middle cover 7 right sides, produce have overcoat inner chamber section, the length of overcoat inner chamber section be the lock core of supporting installation effectively open about 1/2nd of key piece length.

Be arranged with the inner chamber that penetrates that cooperates with little cover in described, overlap in the inner chamber 10 during little cover assembly is installed in, at middle cover 7 right-hand members stopper 6 being housed makes little cover 14 only in middle cover inner chamber 10 activities, when inward flange 9 clampings of the outward flange 19 of little cover and middle cover, the bayonet lock 15 at little cover outward flange place and the also corresponding chucking of draw-in groove 12 at middle cover inward flange place, at this moment little cover 14 can not rotate in middle cover 7, hold the shank of the key pin 23 under the active force of spring 32, can upspring at little cover perforate 18 places in press section 21, closure plate 29 is also gone up bullet to the shank of the key jack 22 upper walls, thereby the shank of the key jack 22 is closed; Simultaneously, between middle cover 7 right sides and little cover 14 right sides, produce have in cover inner chamber section, the length of this inner chamber section be supporting installation lock core effectively unlatching key piece length about 1/2nd; When little cover 14 when middle cover inner chamber 10 is movable, the draw-in groove 12 of cover during the bayonet lock 15 of little cover breaks away from, little cover 14 can rotate in middle cover inner chamber 10.

The total length of two inner chamber sections of above-mentioned overcoat inner chamber Duan Yuzhong cover inner chamber section is equal in length of the key piece 36 effectively opened with the lock core of supporting installation.

For the press section of the holding the shank of the key pin 23 21 unlikely separate convex that make little cover assembly, the crime one's share of expenses for a joint undertaking is easy to knock or pull by force with instrument, and contour with press section 21 at the bayonet lock 11 that middle cover is set, the draw-in groove 5 of overcoat matches with the bayonet lock 11 of middle cover.

For can with said structure the lockset of supporting installation open, the utility model provides a kind of and the key lock anti-theft device adapted, the right-hand member band tooth portion of this key is the key piece 36 that mates with the lockset lock core, the left part of key is a shank of the key 35, the deep equality of the length of the shank of the key 35 and the shank of the key jack 22, the shank of the key 35 left ends have the card protruding 34 that matches with the card groove 33 of the shank of the key jack 22.

When using the unlatching of this device or closing the lockset of supporting installation, the draw ring 13 of the little cover 14 of drawing, make inward flange 9 clampings of outward flange 19 with the middle cover 7 of little cover 14, and the bayonet lock 15 of little cover 14 is stuck in the draw-in groove 12 of middle cover 7, middle cover outward flange 8 and 2 clampings of overcoat inward flange, hold 7 internal chamber walls are overlapped in the press section 21 of the shank of the key pin 23 in not having restriction, under the tension force effect of spring 32, holding the press section 21 of the shank of the key pin 23 can upspring at arc surface perforate 18 places of little cover 14, the shank of the key jack 22 of this moment and the key hole 28 of little cover 14 level that exists together, this moment, this device can produce an inner chamber section, the key that will match with this device inserts from key hole 28, and key integral body is entered in the shank of the key jack 22, under the effect of the card of the shank of the key left end protruding 34 and the card groove 33 of the shank of the key jack, the shank of the key 35 is kept somewhere in the shank of the key jack 22, then stretch in the inner chamber section that this device produces with the key piece 36 of lockset coupling, press and hold the shank of the key pin press section 21, the shank of the key jack 22 sinks down into lock core hole coaxial position with supporting installation together with key, and the top of press section 21 is concordant with the cambered surface of little cover 14, little cover assembly is pushed the inner chamber 10 of middle cover 7, middle cover 7 pushes the inner chamber 3 of overcoat 1 together with little cover 14, enter the lock core hole of the lockset of supporting installation at this moment with the key piece 36 of lockset coupling, because little cover 14 overlaps 7 inner chamber 10 in pushing after, the draw-in groove 12 of cover 7 during the bayonet lock 15 that little cover 14 is provided with breaks away from, so little cover 14 can rotate, rotation draw ring 13, make little cover 14 together with key and supporting lock pin coaxial rotation, reach and open or closing function.

After opening or close the closed procedure end, rotate little cover 14, bayonet lock 15 is alignd with the draw-in groove 12 of middle cover 7, the draw ring 13 of the little cover 14 of drawing, make little cover outward flange 19 and middle cover inward flange 9 clampings, middle cover outward flange 8 and 2 clampings of overcoat inward flange, hold the shank of the key pin 23 overlaps internal chamber wall in not having restriction this moment, key in the shank of the key jack 22 can pop up to the key hole 28 with little cover 14 and is in same level with holding the active force of the shank of the key pin 23 at spring 32, cover 7 enters overcoat 1 in pushing away then, the right-hand member of key is under the plate face effect of supporting installation lockset, and key can withdraw from round about, takes conveniently.

When this device open mode, closure plate 29 is closed the shank of the key jack 22, the lock core hole mutual dislocation of the shank of the key jack 22 and coaxial supporting installation, even artificially push down the lock core hole that closure plate 29 also can't be spied on coaxial mounted lockset with other instrument this moment, when this device closure state, this device does not have Kong Weike to spy on lock core hole.The device that will have the utility model structure is the coaxial installation of lockset of positive center of circle rotation with the lock core perforate, and be installed in lockset lockhole outside, owing to can reach the lock core hole that to spy on supporting installation lockset after this device is installed, so theftproof performance is high, the crime one's share of expenses for a joint undertaking can't be carried out technical unlocking to lockset.

Claims (5)

1, a kind of lock anti-theft device is characterized in that it comprises overcoat (1), middle cover (7), little cover assembly, and described little cover assembly is sleeved on middle cover (7) inner chamber, and middle cover (7) is sleeved on overcoat (1) inner chamber together with little cover assembly; Little cover assembly comprises little cover (14), hold the shank of the key pin (23), the limited cover (26) that penetrates chute (27) is arranged, closure plate (29), spring (32), the described the shank of the key pin (23) that holds has press section (21), sliding pin (24), the shank of the key jack (22), spring eye (31) with the shank of the key jack (22) vertical connection, both ends of the surface at the shank of the key jack (22) have the chute (30) that cooperates with closure plate (29), (25), closure plate (29) is contained in the shank of the key jack (22), the two ends kink inserts chute (30), (25) in, closure plate (29) can be up and down in the shank of the key jack (22); Described little cover (14) is provided with and holds the inner chamber (16) that the shank of the key pin (23) matches, the profile of little cover (14) is cylindrical, the arc surface of little cover (14) have with hold the corresponding perforate in the shank of the key pin press section (21) (18) and with the bayonet lock (15) of middle cover draw-in groove (12) clamping, there are eccentric key hole (28) and mobilizable handle (13) in the left side; Described holding in the inner chamber (16) that the shank of the key pin (23) is installed in little cover (14) held the press section (21) of the shank of the key pin and can be located up and down in little cover perforate (18); Spring (32) is contained in the spring eye (31), spring (32) upper end contacts with closure plate (29), the lower end is fixed on little cover (14) inner chamber (16) lower wall, the chute (27) that penetrates of limited cover (26) is stuck on the sliding pin (24) that holds the shank of the key pin (23), and limited cover (26) is fixed on little cover (14) right-hand member; In described cover (7) be provided with the inner chamber (10) that matches with little cover (14), inward flange (9) and with the draw-in groove (12) of little cover bayonet lock (15) clamping, at middle cover (7) right-hand member stopper (6) is housed and makes the little cover (14) can only activity middle cover (7) in; Described little cover (14) is provided with the outward flange (19) with middle cover inward flange (9) clamping; Described overcoat (1) is provided with middle cover (7) and cooperates inner chamber (3), inward flange (2) and the draw-in groove (5) that penetrates, and has and the fixing screw (4) of supporting installation cylinder plate face at overcoat (1) right-hand member; Described middle cover (7) is provided with the outward flange (8) with the corresponding clamping of overcoat inward flange (2), and described middle cover (7) external surface is provided with the bayonet lock (11) that cooperates with overcoat draw-in groove (5).

2, lock anti-theft device according to claim 1, the shank of the key jack (22) when it is characterized in that described eccentric key hole (28) and holding the shank of the key pin (23) going up bullet is to be in same level, helps pushing the depression (20) of key at key hole (28) periphery.

3, lock anti-theft device according to claim 1, it is characterized in that described overcoat inner chamber (3) is to penetrate to offer, the shape of its profile is circular, square or other shapes, the profile of cover is circular in described, square or other shapes, overcoat inner chamber (3) is offered with middle cover profile and is cooperated, middle cover is installed in the overcoat, when the flange (8) of middle cover and flange (2) clamping of overcoat, produce between overcoat (1) right side and middle cover (7) right side have overcoat inner chamber section, the length of overcoat inner chamber section be the lock core of supporting installation effectively open key piece (36) length 2/5 1 3/5 between.

4, according to the described lock anti-theft device of claim 1, it is characterized in that described little cover (14) profile is cylindrical, in cover inner chamber (10) offer and will make little cover (14) can be in middle cover movable, little cover (14) is contained in the middle cover (7), during inward flange (9) clamping of the flange (19) of little cover (14) and middle cover, between middle cover (7) right side and little cover (14) right side, produce have in cover inner chamber section, the length of this inner chamber section be institute's key piece (36) length of joining the effective unlatching of lock core 2/5-3/5 between.

5, the key of the described lock anti-theft device adapted of a kind of claim 1, the right-hand member band tooth portion that it is characterized in that this key is the key piece (36) that mates with the lockset lock core, the left part of key is the shank of the key (35), the deep equality of the length of the shank of the key (35) and the shank of the key jack (22), the left end of the shank of the key (35) have the card protruding (34) that matches with the card groove (33) of the shank of the key jack (22).

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