CN106968518B

CN106968518B - AB lock

Info

Publication number: CN106968518B
Application number: CN201710243025.8A
Authority: CN
Inventors: 骆国基
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-08-31
Filing date: 2017-04-07
Publication date: 2020-12-11
Anticipated expiration: 2037-04-07
Also published as: CN106968518A

Abstract

An AB lock comprises a lock body, a lock core, an A blade, a B blade, a lock pin, an A key and a B key, wherein the lock core is provided with a plurality of blade grooves, the A blade and the B blade are arranged in the lock core, the lock pin groove is also arranged in the lock core, the lock pin is arranged in the lock pin, a positioning clamping piece is arranged at the front end or the rear end of the lock pin groove, a positioning hook is arranged at the front end or the rear end of the lock pin, a clearance groove is arranged in the lock pin, the clearance groove is aligned with the B blade before AB function conversion, the clearance groove is shifted after AB function conversion and is not aligned with the B blade any more, a magnetic block or a spring for pushing or pulling the lock pin to perform AB function conversion is arranged in the lock body or the lock core, the A key is provided with a correct A tooth pattern corresponding to the A blade, and is provided with an incorrect B tooth pattern corresponding to the B blade, and the B key is provided. By adopting the technical scheme, after the AB function is converted, the lock cannot be unlocked by a method of filling the A key, and the safety performance of the AB lock is greatly improved.

Description

AB lock

Technical Field

The invention relates to a lock, in particular to an AB lock.

Background

The AB lock and the AB key are two kinds of keys which can be inserted into A, B, the key A is only used as an engineering key and is used for a building to be mastered by constructors before delivery, the key B is mastered by owners, when the building is delivered and used after completion of the engineering, the AB function is converted after the owners use the key B to unlock the lock, the key A can not unlock the lock, and the owners do not need to replace the lock for safety when the lock is installed.

Most of keys of AB locks in the prior art are that the A key has one more hole or one more gap than the B key, after AB function conversion, the lock can be unlocked if the hole or gap of the A key is supplemented by foreign matters, in addition, the A key is easy to be matched with the B key, and the A key is the same as the B key as long as one hole or gap is machined less, so that great potential safety hazard exists in practice.

Disclosure of Invention

To overcome the disadvantages of the prior art, the present invention provides an AB lock.

The invention is realized by the following steps: the lock comprises a lock body, a lock core, an A blade, a B blade, a lock pin, an A key and a B key, wherein the lock core is axially provided with a plurality of blade grooves, the A blade and the B blade are arranged in the lock core, the A blade and the B blade are both provided with unlocking grooves, the lock pin groove is longitudinally arranged on the lock core perpendicular to the blade grooves, the lock pin is arranged in the lock core, a positioning clamp is arranged at the front end or the rear end of the lock pin groove, the front end or the rear end of the lock pin is provided with a positioning hook, the lock pin is provided with a plurality of clearance grooves, the clearance grooves are aligned with the B blade before AB function conversion, the clearance grooves are shifted after the AB function conversion and are not aligned with the B blade, the lock body is provided with a lock groove corresponding to the lock pin, a magnetic block or a spring for pushing or pulling the lock pin to perform AB function conversion is arranged at a corresponding position of the lock body, the A key is a correct A tooth pattern, the B-key is set to the correct a-bit and the correct B-bit, either as a straight line or as a jagged bit.

By adopting the technical scheme, after the AB function is converted, the lock can not be unlocked by a method of filling the key A, the risk that a person uses the key A to match the key B does not exist, the potential safety hazard of the AB lock in the prior art is solved, and the safety performance of the AB lock is greatly improved.

The invention has novel and unique structure, strong safety and good social and economic benefits.

Drawings

Fig. 1 is a schematic structural diagram of a first embodiment of the present invention before AB function conversion.

Fig. 2 is a schematic structural diagram of the key a unlocking before the AB function is switched in the first embodiment of the invention.

Fig. 3 is a schematic structural diagram of AB function conversion according to the first embodiment of the present invention.

Fig. 4 is a schematic structural diagram of the first embodiment of the present invention after AB function conversion is completed.

Fig. 5 is a schematic structural diagram of a third embodiment of the present invention.

Fig. 6 is a schematic structural diagram of a fourth embodiment of the present invention.

Fig. 7 is a schematic structural view of a fifth embodiment of the present invention.

Fig. 8 is a schematic structural diagram of a seventh embodiment of the present invention.

Fig. 9 is a left side view of a fifth embodiment of the detent structure of the present invention.

Fig. 10 is a top view of a fifth embodiment detent construction of the present invention.

Fig. 11 is a schematic structural view of a key according to a first embodiment a of the present invention.

Fig. 12 is a schematic structural view of a key B according to a first embodiment of the present invention.

Fig. 13 is a schematic structural view of a key according to a second embodiment a of the present invention.

Fig. 14 is a schematic structural view of a key B according to a second embodiment of the present invention.

Fig. 15 is a schematic structural view of a key according to a sixth embodiment a of the present invention.

Fig. 16 is a schematic structural view of a key according to a sixth embodiment B of the present invention.

Fig. 17 is a schematic structural view of a key according to a seventh embodiment a of the present invention.

Fig. 18 is a schematic structural view of a key B according to a seventh embodiment of the present invention.

Fig. 19 is a schematic structural view of a key according to an eighth embodiment a of the present invention.

Fig. 20 is a schematic structural view of a key according to an eighth embodiment B of the present invention.

Fig. 21 is a schematic structural view of a key according to a ninth embodiment a of the present invention.

Fig. 22 is a schematic structural view of a key B according to a ninth embodiment of the present invention.

Fig. 23 is a schematic structural view of a key according to a tenth embodiment a of the present invention.

Fig. 24 is a schematic structural view of a key according to a tenth embodiment B of the present invention.

Fig. 25 is a schematic structural view of a key according to an eleventh embodiment a of the present invention.

Fig. 26 is a schematic structural view of a key B according to an eleventh embodiment of the present invention.

Fig. 27 is a schematic structural view of a twelfth embodiment of the present invention.

Fig. 28 is a top view of a twelfth embodiment of the invention.

Fig. 29 is a schematic structural diagram of a thirteenth embodiment of the present invention.

Fig. 30 is a top view of a thirteenth embodiment of the invention.

FIG. 31 is a schematic structural diagram of a fourteenth embodiment of the present invention

Detailed Description

Fig. 1-4 and 11-12 show a first embodiment of the present invention, which includes a lock body 1, a lock cylinder 2, an a blade 3 and a B blade 4, a lock pin 5, an a key 6 and a B key 7, wherein the lock cylinder is axially provided with blade grooves, three blades are placed in each blade groove, two blades are provided with the a blade 3 provided with a spring and one blade 4 provided with no spring, the a blade 3 and the B blade 4 are both provided with unlocking grooves, the lock pin groove is longitudinally provided in the lock cylinder 2 perpendicular to the blade grooves, the lock pin 5 is internally provided, a positioning clip 21 is provided at the front end of the lock pin groove, the front end of the lock pin 5 is provided with a positioning hook 51, the lock pin 5 is provided with a clearance groove 52, the clearance groove 52 is aligned with the B blade 4 before the AB function is switched, the clearance groove 52 is provided in the clearance groove 52, after the AB function is switched, the clearance groove 52 is not aligned with the B blade 4, the lock pin 5 is made of a magnetic material, the lock body 1 is provided with a locking groove corresponding to the lock pin 5, an unlocking marble and a spring thereof are arranged in the locking groove, a magnetic block 11 for pulling the lock pin 5 to perform AB function conversion is arranged at the corresponding position of the lock body 1, the A tooth corresponding to the A blade 3 of the A key is an outer milling tooth and a correct tooth, the curve groove tooth corresponding to the B blade 4 is an incorrect tooth B, and is a straight line, and the B key 7 is provided with a correct outer milling tooth A tooth and a correct curve groove B tooth.

Before AB function is converted, the key A6 is used for unlocking, when the key A6 is inserted, the unlocking grooves of all the blades A3 are aligned to form a straight line, the teeth B of the key A6 are not aligned, the unlocking grooves of the blades B4 are not aligned, but because the clearance grooves 52 of the lock pins 5 are aligned with the blades B4, the unlocking grooves of the blades B4 are not aligned and the falling of the lock pins 5 is not influenced, at the moment, under the action of unlocking marbles and springs thereof, the inner ends of the lock pins 5 fall into the unlocking grooves of the blades A, the outer edges of the blades B4 enter the clearance grooves 52 of the lock pins 5, the outer ends of the lock pins 5 are flush with the outer circle surface of the lock cylinder 2, the lock cylinder of the key A6 is twisted to rotate the lock cylinder 2, when the lock cylinder is rotated to 11, the magnetic blocks generate suction to the lock pins 5, but are clamped on the clearance grooves 52 of the blades B4 of the lock pins 5, so that, the AB function can not be converted, and the lock can be unlocked by continuously twisting the A key 6.

The switch of AB function is inserted into the B key 7, because the B key 7 has correct tooth A and tooth B, the unlocking grooves of the blade A3 and the blade B4 are aligned to form a straight line, the lock pin 5 falls into the unlocking grooves of the blade A3 and the blade B4 under the action of the unlocking marble and the spring thereof, the lock core 2 can be rotated by twisting the B key 7, when the B key is rotated to the position of the magnetic block 11, the magnetic block generates suction to the lock pin 5, the unlocking grooves of the blade B4 are aligned at the moment, no obstruction is caused to the lock pin 5, the lock pin 5 moves axially under the action of the magnetic block 11, the positioning hook 51 at the front end of the lock pin 5 reaches a preset position, the B key 7 can be unlocked by continuously twisting the B key 7, the B key 7 is pulled out after the lock is started, and the unlocking grooves of the blade A3 and the blade B4 force the lock pin 5 to move outwards under the action of the tooth A and the tooth B of the B key 7 in the process of pulling out the B key 7, the outer end of the lock pin 5 enters the locking groove of the lock body 1 to form a locking state, at the moment, the clearance groove 52 of the lock pin 5 is not aligned with the B blade 4 any more, the lock pin 5 is already contacted with the B blade 4, the opening and closing functions of the B blade 4 to the lock pin 5 are started, the positioning hook 51 of the lock pin 5 hooks the positioning clamp 21, the AB function is converted and completed, at the moment, if the A key 6 is inserted, the A key 6 cannot be opened naturally due to the fact that the B blade 4 is already started to open and close the lock pin 5.

Fig. 13-14 show a second embodiment of the invention, which differs from the first embodiment in that: the teeth B in the middle of the key A6 are not straight lines, but are arranged into disordered curved groove teeth B.

Fig. 5 shows a third embodiment of the invention, which differs from the above embodiments in that: the lock pin 5 is made of non-magnetic-absorption material, a magnetic block 53 is embedded in a proper position, and the polarity of the magnetic block 53 is different from that of the magnetic block 11.

Fig. 6 shows a fourth embodiment of the invention, which differs from the above-described embodiments in that: the lock pin 5 is made of non-magnetic-absorption material, a magnetic block 53 is embedded in a proper position, and the polarity of the magnetic block 53 is the same as that of the magnetic block 11.

Fig. 7, 9-10 show a fifth embodiment of the present invention, which differs from the above embodiments in that: its magnet 11 is replaced by spring 12, and the locking groove of lock body 1 is equipped with spring 12, and the correspondent position of lock pin 5 is equipped with oblique surface 54 matched with spring 12.

Fig. 15-16 show a sixth embodiment of the invention, which differs from the above embodiments in that: one of the outer milling teeth on two sides of the key A6 is provided with a B tooth, and the curved slot tooth in the middle is changed into an A tooth.

Fig. 8, 17-18 show a seventh embodiment of the present invention, which differs from the above embodiments in that: only two blades are placed in each blade groove, the two blades are provided with springs, one blade is set as an A blade 3, the other blade is set as a B blade 4, an A key 6 and a B key 7 of the blade are outer teeth milling keys, the middle part of the key is not provided with curve groove teeth, one edge of each outer tooth milling on two sides is set as an A tooth, and the other edge of each outer tooth milling on two sides is set as a B tooth.

Fig. 19 to 20 show an eighth embodiment of the present invention, which differs from the above-described embodiments in that: a key 6 and a key 7 of the key are inner milling teeth keys, one side of each inner milling tooth on two sides is provided with a tooth A, and the other side is provided with a tooth B.

Fig. 21 to 22 show a ninth embodiment of the present invention, which differs from the above embodiments in that: a key 6 and a key 7 are curved slot keys, and one of the two curved slot keys is provided with an A tooth and the other is provided with a B tooth.

Fig. 23-24 show a tenth embodiment of the invention, which differs from the above embodiments in that: a key 6 and a key 7 of the key are inner milling teeth and outer milling teeth mixed keys, and the two sides are mixed teeth, wherein one side of the mixed teeth is provided with A teeth, and the other side of the mixed teeth is provided with B teeth.

Fig. 25-26 show an eleventh embodiment of the invention which differs from the previous embodiments in that: the teeth B of the key A6 and the key B7 are not fixed.

Fig. 27-28 show a twelfth embodiment of the invention which differs from the above embodiment in that: the magnetic block 11 is disposed in the latch slot adjacent to the magnetic block 53.

Fig. 29-30 show a thirteenth embodiment of the invention, which differs from the above-described embodiments in that: a spring 21 is arranged between the lock pin 5 and the lock cylinder 2 in the lock pin groove to replace the AB conversion function of the spring 12, the magnetic block 11 and the magnetic block 53.

Fig. 31 shows a fourteenth embodiment of the present invention, which differs from the above-described embodiments in that: the detent 21 of the detent groove and the detent hook 51 of the detent 5 are not provided at both ends, at corresponding positions in the middle section.

The above example is only a preferred embodiment of the AB lock of the present invention, and several embodiments can be made on the premise of the inventive concept, which all belong to the protection scope of the present invention.

Claims

1. The AB lock comprises a lock body, a lock cylinder, a blade A, a blade B, a lock pin, a key A and a key B, wherein the lock cylinder is axially provided with a plurality of blade grooves, the blade A and the blade B are arranged in the lock cylinder, the blade A and the blade B are both provided with unlocking grooves, the lock pin groove and the lock pin are longitudinally arranged in the lock cylinder, and the lock pin is arranged in the lock pin groove and is perpendicular to the blade grooves, and the AB lock is characterized in that: the lock body is provided with a locking groove corresponding to the lock pin, the locking groove is provided with an unlocking marble and a spring thereof, the unlocking marble and the spring thereof act on the lock pin to enable the lock pin to move radially inwards to complete unlocking action and AB function conversion, when the AB function is converted, a B key is inserted, the unlocking grooves of all the A blades and the B blades are aligned to form a straight line, under the action of the unlocking marble and the spring thereof, the lock pin falls into the unlocking grooves of the A blades and the B blades, the lock core can be rotated by twisting the B key, and the lock pin moves axially under the action of a magnetic block or the spring, when the positioning hook of the lock pin reaches a preset position, the B key is continuously twisted to unlock, the B key is pulled out after unlocking, in the process of pulling out the B key, under the action of the tooth A and the tooth B of the B key, the unlocking grooves of the blade A and the blade B force the lock pin to move outwards, the outer end of the lock pin enters the locking groove of the lock body to form a locking state, at the moment, the clearance groove of the lock pin is not aligned with the blade B any more, the lock pin is in contact with the blade B, the opening and closing functions of the blade B on the lock pin are started, the positioning hook of the lock pin hooks the positioning clamp, and the AB function is converted and completed; the tooth of the key A corresponding to the blade A is a correct tooth A, the tooth of the key B corresponding to the blade B is set to be an incorrect tooth B, and the key B is set to be a correct tooth A and a correct tooth B.

2. An AB lock as claimed in claim 1, wherein: the lock body is provided with an AB function conversion magnetic block matched with the lock pin.

3. An AB lock as claimed in claim 1, wherein: the lock pin is made of a magnetic absorption material.

4. An AB lock as claimed in claim 1, wherein: the lock pin is made of non-magnetic-absorption material, and an AB function conversion magnetic block is arranged on the lock pin.

5. An AB lock as claimed in claim 1, wherein: an AB function conversion magnetic block matched with the AB function conversion magnetic block of the lock pin is arranged in the lock pin groove.

6. An AB lock as claimed in claim 1, wherein: the lock body is provided with an AB function conversion spring matched with the lock pin.

7. An AB lock as claimed in claim 1, wherein: the AB function conversion spring is arranged in a lock pin groove of the lock cylinder and between the lock pin and the lock cylinder.