CN108798261B - Key with a key holder - Google Patents

Abstract

The invention relates to the field of keys and discloses a key which comprises a key handle and a key body for unlocking, wherein the key body comprises a main body part and one, two or three key sheets, the key sheets are hinged on the main body part and can incline outwards relative to the main body part, and the key sheets and the main body part are respectively provided with a first unlocking part and a second unlocking part for unlocking a lock cylinder. The key is used for being matched with an anti-theft lock, the inside of the anti-theft lock is provided with a turning key groove, and the key can be inserted into the key groove to unlock the lock cylinder through the first unlocking part and the second unlocking part; because the key slot has the characteristic of turning, the unlocking tool is difficult to turn in the slot, and even if the key slot turns backwards, the lock core at the chute after unlocking and turning is impossible to stir, so the so-called technical unlocking is stopped, and the anti-theft performance of the lockset is greatly improved.

Description

Key with a key holder

Technical Field

The present invention relates to the field of keys.

Background

Currently, the domestic lock core market includes locks of three levels A, B, C. The class A lock generally comprises a traditional straight lock, a cross lock, a crescent lock and locks with a row of marble structures in most lock cylinders, the anti-theft performance is poor, the mutual unlocking rate is extremely high, the technical unlocking time is generally about a few seconds to two minutes, and among numerous theft cases which occur in China, the class A lock is adopted by most of stolen portals. The B-stage lock is provided with double-row spring grooves, and the B-stage lock is different from the A-stage lock in that the key surface is provided with a row of grooves with irregular bending curves, the main types of the lock cylinders are 3 types, the computer double-row lock cylinders, the double-row crescent lock cylinders and the double-sided blade lock cylinders are prevented from being technically opened within 5 minutes, the mutual opening rate is high, and the lock cylinders can be opened within 1 minute through a strong torsion tool. The C-level lock is safer in the market at present, and is technically impossible to open by adopting double-row computer compound curve groove keys for 270 minutes, but the C-level lock is more used in the financial industry and less used for civil use. The unlocking time of the three levels is different, the longer the time is, the higher the safety coefficient is, and the lower the possibility of being stolen is.

However, the key slot rails of the existing class A, class B and class C locks are all straight-through, so that a tool can enter the key slot, and then a thief uses skills to toggle the marble or the locking plate. In the straight-through track, the tool can be opened for experienced thieves, and the problem of long unlocking time is solved.

Disclosure of Invention

The key is used for being matched with an anti-theft lock, the inside of the anti-theft lock is provided with a turning key groove, the key is used for being inserted into the turning key groove and unlocking a lock cylinder, and an unlocking tool cannot turn in the groove and extend into the innermost end of the groove to unlock the key due to the turning characteristic of the key groove, so that so-called technical unlocking is avoided, and the anti-theft performance of the lock is greatly improved.

The technical scheme adopted for solving the technical problems is as follows: the key comprises a key handle and a key body for unlocking, the key body comprises a main body part and key pieces, the number of the key pieces is one, two or three, the key pieces are hinged to the main body part and can incline outwards relative to the main body part, and the key pieces and the main body part are respectively provided with a first unlocking part and a second unlocking part for unlocking the lock cylinder.

Further, the first unlocking part is an eyelet arranged on the outer surface of the key sheet, and the second unlocking part is a groove arranged on the outer surface of the main body part.

Further, the main body part is provided with an extension surface matched with the key sheet in a molding way, the extension surface extends from the root position of the key sheet to the end position of the key sheet, and a four-periphery structure is formed with the key sheet.

Further, corresponding to the groove, a straight groove communicated with the groove is formed in the extension surface, and a drainage chamfer is arranged at the front end of the straight groove.

Further, a return device for automatically resetting the key sheet is arranged in the main body part.

Further, the return device comprises a return rod, a return spring, a return piston and a return end;

the return end is arranged at the root of the key sheet and used for pressing the root of the key sheet to be in a return state;

the return rod is arranged in the main body part, and the outer end of the return rod is fixedly connected with the return end;

the return piston is fixedly connected with the inner end of the return rod;

the return spring is sleeved on the return rod, one end of the return spring is propped against the return piston, and the other end of the return spring is propped against the end face in the main body part.

The beneficial effects of the invention are as follows: the key is used for being matched with an anti-theft lock, the inside of the anti-theft lock is provided with a turning key groove, and the key can be inserted into the key groove to unlock the lock cylinder through the first unlocking part and the second unlocking part; because the key slot has the characteristic of turning, the unlocking tool is difficult to turn in the slot, and even if the key slot turns backwards, the lock core at the chute after unlocking and turning is impossible to stir, so the so-called technical unlocking is stopped, and the anti-theft performance of the lockset is greatly improved.

Drawings

FIG. 1 is an exploded view of the anti-theft lock of example 1 (the connecting piece is not shown in this view);

FIG. 2 is an enlarged view of the cylinder housing and locking plate assembly of FIG. 1;

fig. 3 is a bottom view of the guide device in embodiment 1;

fig. 4 is a schematic structural view of the antitheft lock of embodiment 1;

FIG. 5 is a cross-sectional view taken along A-A of FIG. 4;

FIG. 6 is a schematic structural view of a locking piece of example 1;

FIG. 7 is a schematic diagram of the key of embodiment 1, wherein the key blade is in a closed state;

FIG. 8 is a schematic structural view of a key of embodiment 1, wherein the key blade is in an open state;

FIG. 9 is a configuration diagram showing the external shape of a key according to embodiment 1;

FIG. 10 is a view in the B direction of FIG. 9;

FIG. 11 is a view in the direction C of FIG. 9;

FIG. 12 is a schematic diagram of the key of example 1 unlocking the anti-theft lock;

FIG. 13 is a schematic view of the anti-theft lock of embodiment 1 in a locked state;

fig. 14 is a bottom view of the guide device in embodiment 2;

fig. 15 is a configuration diagram of the outer shape of the cylinder housing in embodiment 2;

fig. 16 is a bottom view of the guide device in embodiment 3;

fig. 17 is a configuration diagram of the outer shape of the cylinder housing in embodiment 3;

marked in the figure as: 1-lock body, 2-lock cylinder, 11-boss structure, 12-lock plate accommodating cavity, 13-marble groove B, 21-lock cylinder shell, 22-guiding device, 23-marble component, 24-straight groove, 25-chute, 26-elastic component, 27-sealing end, 28-connecting piece, 29-lock plate, 30-lock plate spring, 211-front section lock cylinder shell, 212-rear section lock cylinder shell, 221-inclined plane B, 222-second axial through hole, 231-upper marble, 232-lower marble, 233-marble spring, 261-connecting screw, 262-spring, 271-first axial through hole, 291-protrusion, 2111-lock plate groove, 2112-lock plate spring groove, 2121-inclined plane a, 2122-threaded hole, 2123-marble groove a; 3-handle, 4-key body, 5-return device, 41-key body main part, 42-key body key piece, 51-return pole, 52-return spring, 53-return piston, 54-return end, 411-slot, 421-eyelet, 422-straight recess, 423-drainage chamfer, H1-lock plate holding cavity's height, H2-lock plate's height.

Detailed Description

The present invention will be described in further detail with reference to specific examples, but embodiments of the present invention are not limited thereto.

The invention provides an anti-theft lock, which comprises a lock body 1 and a lock cylinder 2 arranged in the lock body 1, wherein the lock cylinder 2 has two states of locking and unlocking relative to the lock body 1, and the lock cylinder 2 can rotate relative to the lock body when being in the unlocking state. The lock core 2 is internally provided with a key slot for inserting a key, the key slot comprises a front section and a rear section which are communicated, wherein the key slot of the front section is a straight slot 24, the key slot of the rear section is a chute 25, and an included angle between the chute 25 and the straight slot 24 is an obtuse angle. The anti-theft lock is provided with a first locking part at the chute 25 and a second locking part at the straight chute 24, both of which can lock or unlock the lock cylinder 2.

The invention provides a key which can be matched with the anti-theft lock for use. The key comprises a key handle 3 and a key body 4 for unlocking, the key body 4 comprises a main body part 41 and key pieces 42, the number of the key pieces 42 is one, two or three, the key pieces 42 are hinged on the main body part 41 and can incline outwards relative to the main body part 41, and the key pieces 42 and the main body part 41 are respectively provided with a first unlocking part and a second unlocking part for unlocking a lock cylinder. The first unlocking part and the second unlocking part are respectively used for unlocking the first locking part at the anti-theft lock chute 25 and the second locking part at the straight chute 24. In manufacturing, the first unlocking part of the key needs to be matched with the first locking part at the anti-theft lock chute 25, and the second unlocking part needs to be matched with the second locking part at the straight chute 24.

In the invention, a marble assembly 23 is adopted as a first locking part at a chute 25 of the anti-theft lock, and a eyelet 421 is arranged on the outer surface of a key sheet 42 of a key for the marble assembly 23 as a first unlocking part; a locking piece assembly for which a groove 411 is provided on the outer surface of the key main body portion 41 as a second unlocking portion is employed as a second locking member at the straight groove 24 of the antitheft lock 25.

Example 1 (two key pieces of key, two chute of anti-theft lock):

as shown in fig. 1-6, the lock cylinder 2 includes a cylinder housing 21, a guide 22, and a sealing head 27.

The lock core shell 21 comprises a front section and a rear section, the straight groove 24 is positioned in the front section lock core shell 211, the rear section lock core shell 212 is internally provided with two inclined planes A2121, and as shown in fig. 1 and 2, the two inclined planes A2121 are distributed in a straight line;

the outer surface of the guiding device 22 is provided with two protruding inclined planes B221, and the inclined planes B221 are matched with the inclined planes A2121 to be arranged in a straight line. Thereby, two said inclined grooves 25 are formed between the two inclined surfaces 2121, 221, and the two inclined grooves 25 are V-shaped;

the two groups of the ball assemblies 23 are respectively installed corresponding to the two inclined grooves 25, and each group of ball assemblies 23 is installed in the ball groove A2123 of the rear lock cylinder shell 212 and the ball groove B13 of the lock body 1, and has two locking and unlocking states, and the lock cylinder shell 21 cannot rotate relative to the lock body 1 when in the locking state. Specifically, in this embodiment, each set of the marble assemblies 23 includes five upper marbles 231, five lower marbles 232 and five marble springs 233, and the marbles in each set of the marble assemblies 23 may be arranged in various manners, i.e. the intervals and positions of the marbles may be arranged at will; the locking state of the marble assembly is in two cases, one is that when a key is not inserted (the marble spring 233 is in a natural state), the lower marble 232 is clamped between the rear-stage lock cylinder shell 212 and the lock body 1, as shown in fig. 13, so that the rotation of the lock cylinder 2 is clamped, and the other is that when the arrangement mode of the eyelet 421 of the inserted key is not matched with that of the marble, the marble 231 is propped up on the rear side of the key to be positioned between the rear-stage lock cylinder shell 212 and the lock body 1, and the rotation of the lock cylinder 2 is clamped; as shown in fig. 11, in the unlocked state of the marble assembly, when the eyelet 421 into which the key is inserted is matched with the arrangement of the marbles, under the action of the eyelet 421, the upper marble 232 and the lower marble 233 are retracted and then are just positioned in the rear-stage cylinder housing 212 and the lock body 1, respectively, and at this time, the parting line of the upper marble and the lower marble is flush with the parting line of the rear-stage cylinder housing 212 and the lock body 1, and the rear-stage cylinder housing 212 is unlocked and just can rotate along the parting line of the upper marble and the lower marble.

The sealing end 27 is used for sealing the internal components of the lock cylinder 2, is of a concave structure, is arranged on the back surface of the guide device 22, and has an end surface in surface contact with the end surface of the lock cylinder shell 212, so that the guide device 22 is positioned in a groove of the concave structure. The guide device 22 is further provided with an elastic component 26, the elastic component 26 comprises a connecting screw 261 and a spring 262, the connecting screw 261 sequentially penetrates through a first axial through hole 271 on the sealing end head 27 and a second axial through hole 222 on the guide device 22 and then is fixed in a threaded hole 2122 on the rear lock cylinder shell 212, the aperture of the second axial through hole 222 is slightly larger than the outer diameter of the connecting screw 261, the spring 262 is sleeved outside the connecting screw 261 and is installed on the step surface of the second axial through hole 222, one end of the spring is tightly propped against the guide device 22 in a compressed state, and the other end of the spring is tightly propped against the sealing end head 27. When the key is inserted into the chute 25, the guide device 22 is pushed forward by the key, so that the guide device 22 is retracted along the axial direction of the connecting bolt 261, the width of the chute 25 is widened, the key is convenient to enter, when the eyelet of the key is matched with the arrangement mode of the marble, after the key is completely inserted, the upper marble 231 is fully aligned with the eyelet of the key, at the moment, the inclined plane B221 of the guide device 22 can push against one side surface of the key under the action of the elastic restoring force of the spring 262, so that the eyelet on the other side surface of the key pushes the upper marble 231, and the marble assembly 23 is just in an unlocking state. In the above description, since the guiding device 22 reserves a space for the extending surface 412 of the key, a hole or a slot 223 is provided in the middle of the guiding device 22 for the extending surface 412 to pass through, so as to avoid blocking the insertion of the key, as shown in fig. 3.

In addition, the antitheft lock of this embodiment includes four sets of lock piece assemblies, each of which includes three lock pieces 29 and three lock piece springs 30. The lock plate 29 is of a frame-shaped structure, a groove for inserting a key is formed in the middle of the lock plate 29, protrusions 291 which are used for being linked with the groove 411 of the key are arranged on two opposite sides of the groove, correspondingly, a lock plate groove 2111 for radially moving the lock plate 29 is formed in the front section lock cylinder shell 211, one end of the lock plate spring 30 is arranged on the lock plate 29, the other end of the lock plate spring 30 is arranged on the lock plate spring groove 2112 beside the lock plate groove 2111, and meanwhile, a lock plate accommodating cavity 12 is formed in the lock body 1 at the corresponding position of the lock plate assembly; when the lock piece 29 is in a natural state (when a key is not inserted), the lock piece 29 is distributed in a staggered mode in the lock piece groove 2111, the lock piece 29 protrudes from two sides of the lock piece groove 2111 into the lock piece accommodating cavity 12 respectively, the height H1 of the lock piece accommodating cavity 12 is slightly larger than the height H2 of the lock piece 29 (as shown in fig. 5 and 6), the rotation of the lock piece 29 around the shaft can be limited after the lock piece 29 enters the accommodating cavity, the rotation of the lock piece shell 21 relative to the lock body 1 is limited, and only when a groove for inserting the key is matched with a protrusion 291 on the lock piece 29, the key can drive all the lock pieces 29 to move into the lock piece groove 2111 and two sides of the lock piece groove are not protruded outwards, and at the moment, the front lock piece shell 211 can rotate relative to the lock body 1.

In order to enable the parts of the lock cylinder 2 to rotate relative to the lock body 1 as a whole, a connecting piece 28 with an L-shaped section is fixed on the sealing end 27, and the connecting piece 28 is fastened on the boss structure 11 on the outer wall of the lock body 1 after being fixed, and the sealing end 27 is abutted against the rear lock cylinder shell 212 to be in surface contact with the end surface of the rear lock cylinder shell 212, so that the connecting piece 28 can limit the axial movement of the parts of the lock cylinder through the boss structure 11 after being pulled together as a whole, but the connecting piece 28 does not limit the rotation of the lock cylinder 2 relative to the lock body 1.

As shown in fig. 7-11, in order to protect the return device 5, the main body 41 has an extending surface 412 formed by matching with the key piece 42, and as shown in fig. 9, the extending surface 412 is preferably integrally formed with the main body 41, and the extending surface 412 extends from the root position of the key piece 42 to the end position of the key piece 42 to form a four-surrounding structure with the key piece 42, so that when the key piece 42 is folded, the four-surrounding structure can not only protect the return device 5, but also have a beautiful appearance, and of course, the extending surface 412 can also be an independent component and movably or fixedly connected to the main body 41 to form the four-surrounding structure, thereby protecting the return device 5. The grooves 411 on the surface of the main body 41 are required to be matched with the protrusions 291 on the lock pieces 29 of the anti-theft lock, when a key is inserted into the straight groove 24 of the anti-theft lock, the grooves 411 can drive each lock piece 29 to move into the lock piece groove 2111 without protruding outwards, so that the front lock core shell 211 is unlocked. The hole 421 on the outer side of the key blade 42 needs to be arranged corresponding to the above-mentioned arrangement of the marble, and the hole 421 enables the marble assembly 23 to be in an unlocked state. Corresponding to the groove 411, a straight groove 422 communicated with the groove 411 is formed in the extending surface 412, and a drainage chamfer 423 is formed at the front end of the straight groove 422, so that when the key piece 42 is inserted into the straight groove 24, the drainage chamfer 423 firstly introduces the protrusion 291 of the locking piece 29 into the straight groove 422, and then when the key is continuously inserted, the protrusion 291 can move into the groove 411 of the main body 41 along the straight groove 422, thereby ensuring that the key piece 42 can be smoothly inserted into the straight groove without being influenced by the protrusion 291 by designing the straight groove 422. After the protrusion 291 enters the groove 411, the key is inserted continuously, the key piece 42 is separated along the chute 24, meanwhile, the groove 411 can drive the locking plate 29 to move, finally, the groove 411 unlocks the locking plate component, the eyelet 421 unlocks the marble component 23, unlocking of the straight groove 24 and the chute 25 is completed respectively, so that the whole lock cylinder shell 21 is unlocked, then, the handle 3 of the key is rotated again, the key piece 42 drives the lock cylinder shell 21 and the guide device 22 to rotate together, the lock cylinder shell 21 is connected with the sealing end 27 into a whole through the connecting screw 261, the sealing end 27 rotates together, and finally, under the action of the connecting piece 28, the parts of the lock cylinder 2 rotate as a whole along with the rotation of the key, so that unlocking of the anti-theft lock is completed.

It should be noted that the drawing of this embodiment does not show the pick of the anti-theft lock, and the pick may be disposed on the seal head 27 or at other reasonable positions during manufacturing, so as to be guaranteed to rotate together with the lock cylinder 2.

In order to enable the key sheet 42 to automatically reset (two key sheets are in a close state), a reset device 5 is further arranged in the main body part 41 of the key, the reset device 5 comprises a reset rod 51, a reset spring 52, a reset piston 53 and a reset end head 54, the reset rod 51 is arranged in the main body part 41, the reset end head 54 is fixed on the outer end head of the reset rod 51 and is positioned at the root part between the two key sheets 42, the reset piston 53 is fixed on the inner end head of the reset rod 51, the reset spring 52 is sleeved on the reset rod 51, one end of the reset piston 53 is tightly propped against the end face of the main body part 41, and the other end of the reset piston 53 is tightly propped against the end face of the main body part 41. Thus, when the key is not in use, as shown in fig. 7, under the action of the return spring 52, the return rod 51 is retracted, the return end 54 brings the two key pieces 42 into the closed state, and the closed key pieces 42 are flush with the main body portion 41 so as to receive or store the key; when a key is inserted into the chute 25, as shown in fig. 8 and 12, under the action of the inclined plane B221 of the deflector 22, the two key sheets 42 are opened to enter the two chute 25 respectively, the return rod 51 is extended, the return end 54 is lifted up by the key sheets 42, and after the key is taken out, the return rod 51 is retracted again, so that the key sheets 42 are in a folded state.

Example 2 (one key piece of key, one chute of anti-theft lock):

the embodiment is substantially the same as the technical solution of embodiment 1, and the main difference is that the number of the anti-theft lock chute is one.

Based on one chute, the lock cylinder and the key of the embodiment 1 are changed as follows:

regarding the lock cylinder, the number of inclined surfaces a 2121 provided in the interior of the rear-stage cylinder housing 212 is one, as shown in fig. 15; correspondingly, the number of the inclined surfaces B221 protruding from the outer surface of the guide device 22 is also one, as shown in FIG. 14; thereby forming one of said chute between the inclined surfaces; of course, the number of the marble assemblies is also one, and is arranged corresponding to the chute.

In the key, the number of the key sheets is one, the number of the extending surfaces of the main body part is three, the three extending surfaces are integrally formed on the main body part, and the extending surfaces extend from the root position of the key sheet to the end position of the key sheet and form a four-periphery structure with the key sheet. Of course, the straight grooves and drainage chamfers are also provided on the extension surface, and the functions of the straight grooves and drainage chamfers are the same as those of the embodiment 1. The key of this embodiment is similar to that of embodiment 1 in structure, and the description of the drawings is not separately given here.

In the above description, since the guiding device 22 reserves a space for the extending surface 412 of the key, a hole or a notch 223 is also provided in the middle of the guiding device 22 for the extending surface 412 to pass through, so as to avoid blocking the insertion of the key, as shown in fig. 14, the notch 223 has a concave shape.

Example 3 (three key pieces of key, three chute of anti-theft lock):

the embodiment is substantially the same as the technical solution of embodiment 1, and the main difference is that the number of the anti-theft lock chute is three.

Based on three inclined grooves, the lock cylinder and the key of the embodiment 1 are changed as follows:

regarding the lock cylinder, the number of the inclined surfaces a 2121 provided in the interior of the rear-stage cylinder housing 212 is three as shown in fig. 17; correspondingly, the number of the convex inclined surfaces B221 on the outer surface of the guide device 22 is three, as shown in FIG. 16; thereby, three of said inclined grooves 25 are formed between the inclined surfaces 2121, 221; of course, the number of the marble assemblies 23 is three, and is set corresponding to the chute 25.

In the key, the number of the key sheets is three, the extending surface of the main body part is one, the extending surface is integrally formed on the main body part, and the extending surface extends from the root position of the key sheet to the end position of the key sheet and forms a four-periphery structure with the key sheet. Of course, the extending surface is also provided with a straight groove and a drainage chamfer, and the functions of the extending surface are the same as those of the embodiment 1. The key of this embodiment is similar to that of embodiment 1 in structure, and the description of the drawings is not separately given here.

In the above description, since the guide 22 reserves a space for the extending surface 412 of the key, a hole or a slot 223 is also provided in the middle of the guide 22 for the extending surface 412 to pass through, so as to avoid blocking the insertion of the key, as shown in fig. 16.

The lock of this embodiment sets up locking plate subassembly and marble subassembly respectively in straight flute and chute department, unblanks and to need unblock locking plate subassembly and marble subassembly side simultaneously, consequently has extremely strong theftproof performance, and the specialty unlocking personnel adopts present instrument even after the locking plate of straight flute has been unlocked, also hardly unlock the marble subassembly of chute again after the diversion in the key way track, moreover under the circumstances that has a plurality of chute, still need to unlock the marble subassembly in each chute simultaneously, this is impossible for present technicians and instrument. Therefore, the anti-theft lock has excellent anti-theft performance and excellent market prospect, the key is specially configured for the anti-theft lock, and the key and the anti-theft lock provide a better scheme for the current lockset market, so that the safety performance of the lockset is greatly improved.

Claims (6)

1. A key comprising a key handle (3) and a key body (4) for unlocking, characterized in that: the key body (4) comprises a main body part (41) and key pieces (42), wherein the number of the key pieces (42) is one, two or three, the key pieces (42) are hinged on the main body part (41) and can incline outwards relative to the main body part (41), and the key pieces (42) and the main body part (41) are respectively provided with a first unlocking part and a second unlocking part for unlocking the lock cylinder.

2. A key as defined in claim 1, wherein: the first unlocking part is a eyelet (421) arranged on the outer surface of the key sheet (42), and the second unlocking part is a groove (411) arranged on the outer surface of the main body part (41).

3. A key as defined in claim 2, wherein: the main body part (41) is provided with an extension surface (412) which is matched with the key piece (42) in a molding way, the extension surface (412) extends from the root position of the key piece (42) to the end position of the key piece (42) and forms a four-round structure with the key piece (42).

4. A key according to claim 3, wherein: corresponding to the groove (411), a straight groove (422) communicated with the groove (411) is formed in the extension surface (412), and a drainage chamfer (423) is arranged at the front end of the straight groove (422).

5. A key according to any one of claims 1-4, wherein: the inside of the main body part (41) is provided with a return device (5) for automatically resetting the key blade (42).

6. A key as defined in claim 5, wherein: the return device (5) comprises a return rod (51), a return spring (52), a return piston (53) and a return end (54);

the return end (54) is arranged at the root of the key sheet (42) and is used for pressing the root of the key sheet (42) to be in a return state;

the return rod (51) is arranged in the main body part (51), and the outer end of the return rod is fixedly connected with the return end (54);

the return piston (53) is fixedly connected with the inner end of the return rod (51);

the return spring (52) is sleeved on the return rod (51), one end of the return spring is propped against the return piston (53), and the other end of the return spring is propped against the end face inside the main body part (41).

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