CN108798263B - 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 (3) and a key body (4) for unlocking, wherein the key body (4) comprises a main body part (41) and key sheets (42), the number of the key sheets (42) is at least one, the key sheets (42) are hinged on the main body part (41) and can incline outwards relative to the main body part (41), and a first unlocking part for unlocking a lock cylinder is arranged on the key sheets (42). The key is used in combination with an anti-theft lock, the inside of the anti-theft lock is provided with the turning key groove, and the unlocking tool cannot turn in the groove to go deep into the innermost end of the key groove due to the turning of the key groove, so that 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 the turning key groove, and an unlocking tool cannot turn in the groove and extend into the innermost end of the groove to unlock the turning key groove 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, wherein the key body comprises a main body part and key sheets, the number of the key sheets is at least one, the key sheets are hinged on the main body part and can incline outwards relative to the main body part, and a first unlocking part for unlocking a lock cylinder is arranged on the key sheets.

The first unlocking part is an eyelet arranged on the outer surface of the key sheet.

Preferably, the number of key blades is four, and the four key blades are hinged to the end of the main body part and can be inclined towards four different outer directions respectively relative to the main body part.

Another preferred number of key blades is one, two or three.

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.

Preferably, a return means for automatically resetting the key blade is provided inside the main body portion.

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.

Preferably, the main body portion is provided with a second unlocking portion for unlocking the lock cylinder.

Further, the second unlocking part is a groove formed on the surface of 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 slot, and the key can be inserted into the key slot and unlock the key slot; 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 schematic view of the structure of the anti-theft lock of embodiment 1;

FIG. 4 is a cross-sectional view taken along A-A of FIG. 3;

FIG. 5 is a schematic structural view of a locking piece of example 1;

FIG. 6 is a schematic structural view of the key of embodiment 1, wherein the key blade is in a closed state (only two key blades are shown in this figure);

FIG. 7 is a schematic view of the structure of the key of embodiment 1, wherein the key blade is in an open state (only two key blades are shown in this figure);

FIG. 8 is a configuration diagram showing the external shape of a key according to embodiment 1;

FIG. 9 is a view in the B direction of FIG. 8;

FIG. 10 is a view in the direction C of FIG. 8;

FIG. 11 is a schematic diagram of the key of example 1 when unlocking the anti-theft lock;

FIG. 12 is a schematic view of the anti-theft lock of embodiment 1 in a locked state;

fig. 13 is a configuration diagram of the cylinder housing and the guide of the antitheft lock of embodiment 2;

FIG. 14 is a diagram showing the outline configuration of a key in embodiment 2;

fig. 15 is a bottom view of the guide device in embodiment 2;

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, 223-lack groove, 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, 412-extension, 421-eyelet, 422-straight recess, 423-drainage chamfer, H1-lock plate holding cavity height, H2-lock plate 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 embodiment 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 member at the chute 25, which first locking member is capable of locking or unlocking 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 at least one, the key pieces 42 are hinged on the main body part 41 and can incline outwards relative to the main body part 41, and a first unlocking part for unlocking a lock cylinder is arranged on the key pieces 42. In this embodiment, the first unlocking portion is used for unlocking the first locking member at the anti-theft lock chute 25, so that the first unlocking portion of the key is matched with the first locking member at the anti-theft lock chute 25 during manufacturing.

In the present embodiment, the ball assembly 23 is used as the first locking member in the anti-theft lock chute 25, and the hole 421 is provided on the outer surface of the key piece 42 of the key as the first unlocking portion for the ball assembly 23.

In order to improve the anti-theft performance of the anti-theft lock, a second locking member is further arranged at the straight groove 24 of the anti-theft lock, and a second unlocking part for unlocking the second locking member is arranged at the main body part 41 of the key for the second locking member. The present embodiment adopts a lock plate assembly for which a groove 411 is opened in the surface of the key main body portion as a second unlocking portion as a second locking member at the straight groove 24 of the antitheft lock 25.

Example 1:

as shown in fig. 1 to 5, the antitheft lock of the present embodiment, the lock cylinder 2 includes a cylinder housing 21, a guide 22, and a seal 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, four inclined planes A2121 are arranged in the rear section lock core shell 212, and as shown in fig. 1 and 2, the four inclined planes A2121 are distributed in a cross shape;

the outer surface of the guiding device 22 is provided with four protruding inclined planes B221, and the inclined planes B221 are matched with the inclined planes A2121 and are also distributed in a cross shape. Thereby, four of said inclined grooves 25 are formed between the four inclined surfaces 2121, 221, wherein the two opposing inclined grooves 25 are V-shaped;

the four marble assemblies 23 are respectively installed corresponding to the four inclined grooves 25, and each marble assembly 23 is installed in the marble groove A2123 of the rear lock cylinder shell 212 and the marble 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. 12, 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 so as 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 addition, the embodiment includes four sets of lock plate assemblies, each set of lock plate assemblies includes three lock plates 29 and three lock plate springs 30, the lock plates 29 are in a frame structure, a groove for inserting a key is formed in the middle, two opposite sides of the groove are provided with protrusions 291 for being linked with a groove 411 of the key, correspondingly, a lock plate groove 2111 for radially moving the lock plates 29 is formed in the front lock cylinder shell 211, one end of each lock plate spring 30 is mounted on the lock plate 29, the other end of each lock plate spring 30 is mounted on a 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 corresponding to 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. 4 and 5), 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. 6 to 10, in the key of this embodiment, the groove 411 on the surface of the main body 41 needs to be opened in cooperation with the protrusion 291 on the lock piece 29 of the anti-theft lock, when the key is inserted into the straight groove 24 of the anti-theft lock, the groove 411 can drive each lock piece 29 to move into the lock piece groove 2111 without protruding outwards, so as to unlock the front lock core shell 211; the number of key blades 42 provided at the end of the main body 41 is four, and the holes 421 on the outer surface of the key blade 42 are required to be provided corresponding to the arrangement of the marbles, so that the marbles assembly 23 can be in the unlocked state.

Specifically, four key blades 42 are each hinged to an end of the key body portion 41; a return device 5 is further arranged in the main body portion 41 of the key, the return device is used for automatically resetting the key sheets 42 (the four key sheets are in a close state), the return device 5 comprises a return rod 51, a return spring 52, a return piston 53 and a return end head 54, the return rod 51 is arranged in the main body portion 41, the return end head 54 is fixed on the outer end head of the return rod 51 and is positioned at the root part among the four key sheets 42, the return piston 53 is fixed on the inner end head of the return rod 51, the return spring 52 is sleeved on the return rod 51, one end of the return spring is tightly propped against the return piston 53, and the other end of the return spring is tightly propped against the end face in the main body portion 41. Thus, when the key is not in use, as shown in fig. 6, the return lever 51 is retracted by the return spring 52, the return end 54 brings the four 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. 7 and 11, under the action of the inclined plane B221 of the deflector 22, the four key sheets 42 are opened to enter the four 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.

With respect to the anti-theft lock and the key of the present embodiment, it should be noted that, since the key piece 42 is first inserted into the straight slot 24, and the locking piece 29 is provided at the straight slot 24, and the protrusion 291 is provided on the locking piece 29, in order to prevent the protrusion 291 from affecting the insertion of the key piece 42, in cooperation with the protrusions 291 on opposite sides of the locking piece 29, two corresponding key pieces 42 are provided with the straight grooves 422 in communication with the grooves 411 of the main body portion 41, and the front ends of the straight grooves 422 are provided with the drainage chamfer 423, so that when the key piece 42 is inserted into the straight slot 24, the drainage chamfer 423 will first introduce 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 grooves 411 of the main body portion 41 along the straight groove 422, thereby ensuring that the key piece 42 can be smoothly inserted into the straight slot without being affected by the protrusions 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.

Example 2:

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 two.

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

regarding the lock cylinder, the rear-stage cylinder housing 212 has two inclined surfaces a 2121 in the interior thereof, and as shown in fig. 13, the two inclined surfaces a 2121 are distributed in a straight line; correspondingly, the number of the convex inclined planes B221 on the outer surface of the guide device 22 is two, and the convex inclined planes B221 are also distributed in a straight line shape; thereby, two said inclined grooves 25 are formed between the two inclined surfaces 2121, 221, and the two inclined grooves 25 are V-shaped; of course, the number of the marble assemblies 23 is two, and two corresponding chute 25 are respectively arranged.

Regarding the key, the number of the key sheet 42 is two, in order to protect the return device 5, the main body 41 has an extension surface 412 formed in cooperation with the key sheet 42, the extension surface 412 is integrally formed on the main body 41, and the extension surface 412 extends from the root position of the key sheet 42 to the end position of the key sheet 42, and forms a four-round structure with the key sheet 42. Thus, when the key blade 42 is folded, the four-periphery structure not only can protect the return device 5, but also has a beautiful appearance, as shown in fig. 14. Of course, the straight groove 422 and the drainage chamfer 423 are also formed on the extension surface 412, and the functions thereof are the same as those of embodiment 1.

In the above description, because the extending surface 412 exists, after the key is inserted, the guiding device 22 needs to reserve a space for the extending surface 412 to be unseated, so 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. 15.

It should be noted that the number of the chute is not limited to four or two, and four or two chute are selected as two preferred embodiments listed in the above embodiment, and of course, the chute may be one, three or more. Correspondingly, the number of key blades can also be one, three or more. In the case of one, three or more key sheets, the specific structure of the key is similar to that of the above-described embodiments, and thus, the embodiments are not separately enumerated, and it should be noted that, in order to protect the return device, the main body portion needs to be provided with corresponding extension surfaces in accordance with the number of key sheets.

The anti-theft lock in the above two embodiments is provided with the lock plate component and the marble component at the straight groove and the chute respectively, and the lock is unlocked by simultaneously unlocking the lock plate component and the marble component, so that the anti-theft lock has extremely strong anti-theft performance, and a professional unlocking staff adopts the current tool to unlock the lock plate of the straight groove, so that the marble component of the chute is difficult to unlock after the direction change in the key groove track, and under the condition of a plurality of chutes, the marble component in each chute is also required to be unlocked simultaneously, which is impossible for the current technicians and tools. 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 at least one, the key pieces (42) are hinged on the main body part (41) and can incline outwards relative to the main body part (41), and a first unlocking part for unlocking a lock cylinder with a turning key slot is arranged on the key pieces (42).

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).

3. A key as defined in claim 2, wherein: the number of key blades (42) is one, two or three.

4. A key according to claim 3, 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).

5. A key as defined in claim 1, 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).

Images