阅读说明：本技术 一种机械式防盗锁芯 (Mechanical anti-theft lock cylinder ) 是由 陈勇 李新祥 于 2021-01-20 设计创作，主要内容包括：本发明提供一种机械式防盗锁芯,包括锁芯体和锁壳体,锁芯体可转动连接在锁壳体内,锁芯体上设有弹子结构的主锁部分,锁芯体上设有供钥匙插入的插孔,在锁芯体上还设有二次锁定机构,该二次锁定机构上设有供主锁部分的弹子卡入的槽孔,该槽孔内活动设有活动件,活动件一端延伸至插孔中与钥匙的窄侧面配合本发明通过设置二次锁定机构,使得本发明具有更高的防技术开启能力,且二次锁定机构借用主锁部分的弹子结构,使得二次锁定机构的结构简单,制作成本较低,由于所述锁芯体采用新型镶嵌技术,镶件体采用全不锈钢结构加固了锁芯体防暴、和使用耐久的性能。(The invention provides a mechanical anti-theft lock core, which comprises a lock core body and a lock shell, wherein the lock core body is rotatably connected in the lock shell, a main lock part with a marble structure is arranged on the lock core body, a jack for inserting a key is arranged on the lock core body, a secondary locking mechanism is also arranged on the lock core body, the secondary locking mechanism is provided with a slot hole for the marble of the main locking part to be clamped in, a moving part is movably arranged in the slot hole, one end of the moving part extends into the jack and is matched with the narrow side surface of the key, the secondary locking mechanism is arranged, so that the secondary locking mechanism has higher technical opening prevention capability, and the secondary locking mechanism uses the marble structure of the main lock part, so that the secondary locking mechanism has simple structure and lower manufacturing cost, because the lock core body adopts novel inlay technique, the mold insert body adopts the stainless steel structure of whole to consolidate the anti-riot of lock core body and use durable performance.)

1. The utility model provides a mechanical type theftproof lock core, includes lock core body and lock casing, lock core body rotatable coupling is equipped with the main lock part of pellet shot from a slingshot structure in the lock core body, is equipped with on the lock core body to supply key male jack, its characterized in that: the lock core body is also provided with a secondary locking mechanism, the secondary locking mechanism is provided with a slot hole for the marble of the main lock part to be clamped in, a movable part is movably arranged in the slot hole, one end of the movable part extends into the jack and is matched with the narrow side surface of the key, and the movable part moves in the slot hole under the unlocking state of the secondary locking mechanism so that the marble of the main lock part cannot be clamped in the slot hole when being aligned with the slot hole; the movable piece moves in the slotted hole under the locking state of the secondary locking mechanism, so that the marble of the main locking part can be clamped into the slotted hole when being aligned with the slotted hole, and the lock cylinder body is limited to rotate.

2. A mechanical anti-theft lock cylinder according to claim 1, characterized in that: the secondary locking mechanism comprises an insert, the insert is embedded in the outer side of the lock cylinder body, a complete cylindrical lock cylinder body is formed after the insert is embedded, a space for the movable part to move is arranged between the insert and the lock cylinder body, a convex bulge is arranged on one side, close to the insert, of the movable part, a through groove for the bulge of the movable part to insert is formed in the insert, the bulge of the movable part moves in the through groove of the insert to change the space of the through groove of the insert on two sides of the bulge, when the bulge is located in the middle of the through groove, the space on two sides of the bulge is not enough for the marble of the main; when the bulge deviates from the middle position of the through groove, the space on at least one side of the bulge can be used for the marble of the main lock part to be clamped in, and the secondary locking mechanism is in a locking state.

3. A mechanical anti-theft lock cylinder according to claim 1, characterized in that: the number of the movable parts is one or more.

4. A mechanical anti-theft lock cylinder according to claim 2, characterized in that: the movable piece comprises an outer convex part, an inner convex part and a main body part, and a first sliding groove for the inner convex part and the main body part to slide is formed in the lock cylinder body.

5. The mechanical anti-theft lock cylinder according to claim 4, characterized in that: the inner side of the insert is provided with a second sliding chute for the main body part of the moving part to slide, the insert is provided with a clamping groove for the insertion of the convex part, when the convex parts of all the moving parts are pushed by a key to move to the middle position of the clamping groove, the space on the clamping groove of the insert cannot be clamped by the marble of the main lock part, and then the lock cylinder body can rotate relative to the lock shell, so that the unlocking of the secondary locking mechanism is realized; when the outward protruding part of one of the moving parts deviates from the middle position of the clamping groove, the space on the clamping groove can be clamped by the marble of the main lock part, when the lock cylinder body rotates to align the clamping groove and the marble of the main lock part, the lock cylinder body and the lock shell are clamped with each other, and the secondary locking mechanism is in a locking state.

6. The mechanical anti-theft lock cylinder according to claim 5, characterized in that: the insert is made of stainless steel.

7. The mechanical anti-theft lock cylinder according to claim 5, characterized in that: the clamping groove is an elliptical hole.

8. The mechanical anti-theft lock cylinder according to claim 5, characterized in that: the positions of the inner convex portions of the moving members are different from each other, or the positions of the outer convex portions of the moving members are different from each other.

Technical Field

The invention belongs to the technical field of locks, and particularly relates to a mechanical anti-theft lock cylinder.

Background

Although the shapes of various existing mechanical lock cylinders are varied, the common spring lock cylinder is simple in structure and high in market occupation ratio, mainly comprises a lock shell, a lock cylinder body, a key and the like, and is assisted by springs and spring springs with different lengths to jointly form the locking and unlocking functions of the lock cylinder. When the lock is in a locking state, the lower marbles in the marble holes are all lower than the surface of the lock cylinder body under the action of the elastic force of the marble spring, one half of the upper marbles enter the lock shell, the other half of the upper marbles are left in the lock cylinder body, and the lock cylinder body cannot rotate at the moment. After the key is inserted, the key teeth with different heights on the key overcome the elasticity of the spring and then extrude the lower marble to make the lower marble upwards perform ascending movement with different heights, so that the tail parts of all the lower marbles are flush with the surface of the lock cylinder body, all the upper marbles are discharged out of the lock cylinder body, the lock cylinder body can freely rotate relative to the lock cylinder body under the drive of the key, and the lock cylinder can be opened. When the lock core is just released to the market, because the marbles are distributed along the circumference and are distributed more, a lawless person does not have a special theft-off tool at any time, and the anti-theft performance is better; after years of use, a special theft-proof tool for the lock cylinder appears on the market, and the anti-theft performance is continuously reduced along with the lapse of time.

People also develop a blade anti-theft lock core, which comprises a lock shell, a lock core body and a key, wherein the lock core body is rotatably arranged in the lock shell, the lock core body is provided with a key jack, the lock core body is provided with a plurality of blade grooves which are crossed with the key jack, and a first blade, a second blade or a third blade is sequentially arranged in the blade grooves; the upper part of the first blade is provided with a blade notch, the lower part of the first blade is provided with a spring positioning seat, and the key jack is provided with right side teeth or right middle teeth; the upper part of the third blade is provided with a blade notch, and a middle tooth is arranged in a key jack; the upper part of the second blade is provided with a blade notch, the lower part of the second blade is provided with a spring positioning seat, and a key jack is internally provided with a left side tooth or a left middle tooth; the lock core body and the lock shell are correspondingly provided with locking piece notches parallel to the key insertion hole, locking pieces are arranged on the locking piece notches, the upper parts of the locking pieces correspond to the locking piece notches of the lock shell, and the lower parts of the locking pieces are matched with blade notches on all the blades; when a key is inserted into the first blade, the second blade or the third blade of the key jack of the lock body, the first blade, the second blade or the third blade moves in the blade groove under the action of the spring according to the shape of the carved snake-shaped curve groove on the key, so that a plurality of blade notches and the lock core body locking piece notches form a straight line locking piece which falls into the lock core body, the locking piece is leveled with the surface of the lock core body to form a circumferential body, and the function of rotating the lock core body to open the lock core of the blade lock core is achieved.

Although the anti-theft and anti-prying effects of the novel blade lock cylinder are improved, the key amount is insufficient, the quick unlocking tool is still opened by lawbreakers, and the anti-theft safety performance still cannot meet the market requirement. Therefore, many manufacturers and knowledgeable persons develop and research, but no reasonable products are yet available.

Disclosure of Invention

The invention aims to solve the technical problem of providing a mechanical anti-theft lock cylinder with secondary locking.

The invention is realized by the following technical scheme:

a mechanical anti-theft lock core comprises a lock core body and a lock shell, wherein the lock core body is rotatably connected in the lock shell, a main lock part with a pin tumbler structure is arranged on the lock core body, a jack for a key to insert is arranged on the lock core body, a secondary locking mechanism is also arranged on the lock core body, a slotted hole for the pin tumbler of the main lock part to be clamped is arranged on the secondary locking mechanism, a movable part is movably arranged in the slotted hole, one end of the movable part extends into the jack and is matched with the narrow side face of the key, and the movable part moves in the slotted hole under the unlocking state of the secondary locking mechanism so that the pin tumbler of the main lock part cannot be clamped into the slotted hole; the movable piece moves in the slotted hole under the locking state of the secondary locking mechanism, so that the marble of the main locking part can be clamped into the slotted hole when being aligned with the slotted hole, and the lock cylinder body is limited to rotate.

As a preferred scheme, the secondary locking mechanism in the scheme comprises an insert, wherein the insert is embedded in the outer side of the lock cylinder body, and a complete cylindrical lock cylinder body is formed after the insert is embedded, a space for the movable part to move is arranged between the insert and the lock cylinder body, a convex bulge is arranged on one side, close to the insert, of the movable part, a through groove for the bulge of the movable part to insert is arranged on the insert, the bulge of the movable part moves in the through groove of the insert to change the through groove space of the insert on two sides of the bulge, when the bulge is positioned in the middle of the through groove, the space on two sides of the bulge is not enough for the marble of; when the bulge deviates from the middle position of the through groove, the space on at least one side of the bulge can be used for the marble of the main lock part to be clamped in, and the secondary locking mechanism is in a locking state.

Preferably, the number of the movable parts in the scheme is one or more.

Preferably, the movable member includes an outer convex portion, an inner convex portion and a main body portion, and the lock cylinder body is provided with a first sliding groove for the inner convex portion and the main body portion to slide.

As a further preferable scheme, a second sliding chute for the sliding of the main body part of the moving part is arranged on the inner side of the insert, a clamping groove for the insertion of the convex part is arranged on the insert, when the convex parts of all the moving parts are pushed by a key to move to the middle position of the clamping groove, the space on the clamping groove of the insert cannot be clamped by the marble of the main lock part, and then the lock cylinder body can rotate relative to the lock shell, so that the unlocking of the secondary locking mechanism is realized; when the outward protruding part of one of the moving parts deviates from the middle position of the clamping groove, the space on the clamping groove can be clamped by the marble of the main lock part, when the lock cylinder body rotates to align the clamping groove and the marble of the main lock part, the lock cylinder body and the lock shell are clamped with each other, and the secondary locking mechanism is in a locking state.

Preferably, the insert is made of stainless steel.

Preferably, the clamping groove is an elliptical hole.

Preferably, the position of the inner protrusion of each movable member is different from the position of the movable member, or the position of the outer protrusion of each movable member is different from the position of the movable member.

The invention has the beneficial effects that: the lock core body adopts a novel embedding technology, and the insert body adopts a full stainless steel structure to reinforce the anti-explosion and durable use performance of the lock core body.

Drawings

FIG. 1 is an exploded view of the present invention;

FIG. 2 is a schematic view of the key of the present invention;

FIG. 3 is a perspective view of the cylinder body;

FIG. 4 is a front view of the cylinder body;

FIG. 5 is a perspective view of a stainless steel insert;

FIG. 6 is a schematic structural view of the movable member;

fig. 7 is a schematic view of the movable member in a different position from the inward projection of fig. 6.

Detailed Description

The present invention will be further described with reference to the following examples.

Examples

As shown in fig. 1-7, a mechanical anti-theft lock core, in particular to an anti-theft lock core, which comprises a lock shell 1, a lock core body 2 and a key 3, wherein the lock core body 2 is rotatably arranged in the shell 1, the lock core body 2 is provided with a key jack 24, and the lock core body 2 is connected with a rotating piece 5 and an unlocking fork 4; the lock core body 2 is provided with a main lock part with a pin tumbler structure, wherein the main lock part comprises a T-shaped pin tumbler 8, an upper pin tumbler 9, a spring 10 and a seal ball 11, and the lock core body 2 is provided with a plurality of pin tumbler holes 21 parallel to a key insertion hole 24; the T-shaped marble 8 is sequentially arranged in the marble hole 21, the unlocking and locking principle of the main lock part is the prior art, and details are not described, it is worth noting that stainless steel insert fixing grooves 23 are arranged on two sides of the lock cylinder body 2 in the embodiment and are used for embedding a stainless steel insert 6, the stainless steel insert 6 and the lock cylinder body 2 form a circular whole when being embedded into the lock cylinder body 2, a plurality of oval holes 61 are arranged on the side edge of the stainless steel insert 6, a plurality of vertical second sliding grooves 62 are arranged on the inner side of the stainless steel insert 6, moving parts 7 with different extreme differences are arranged in the second sliding grooves 62 of the stainless steel insert 6 and can move up and down, so that the size of the oval holes 61 on the side edge of the stainless steel insert 6 is controlled, the moving parts 7 comprise an outer convex part 71, an inner convex part 72 and a main body part 73, a first sliding groove 22 for the inner convex part 72 and the main body, in this embodiment, the first sliding groove 22 of the cylinder body and the second sliding groove 62 of the stainless steel insert together form a space for the movable member to move.

When the lock core body 2 is installed in the lock shell 1, a plurality of pin holes 21 on the lock core body and the pin holes 12 of the lock shell form a concentric circle state, and when the pin holes 21 and the pin holes 12 of the lock shell form concentric circles, T-shaped pins 8, upper pins 9, springs 10 and seal balls 11 are sequentially arranged in the holes; the front surface and the back surface of the key 3 are provided with a plurality of V-shaped grooves 31, and two sides of the side edge of the key are respectively provided with a snake-shaped tooth socket 32; the V-shaped groove 31 is matched with the T-shaped marble 8, and the snake-shaped tooth groove 32 is matched with the movable piece 7.

The invention has the following working process that when the key insertion hole 24 of the lock cylinder body 2 is inserted into the key 3, the movable piece 7 can move in the second sliding groove 62 of the stainless steel insert 6 and the first sliding groove 22 of the lock cylinder body 2 in a way of being matched with the snake-shaped groove teeth 32 of the key 3, the convex part 71 of the movable piece 7 can follow the elliptical hole 61 of the stainless steel insert 6 when the movable piece moves in a matching way, and the convex part 71 can be in the middle of the elliptical hole 61 when the movable piece is correctly matched, so that the diameter of the residual space of the elliptical hole 61 is smaller than that of the upper marble 9, and the residual space can smoothly pass through the elliptical hole; when the key 3 is inserted into the key insertion hole 24 of the lock cylinder body 2, the T-shaped marbles 8 sequentially move up and down in a plurality of marble holes 21 of the lock shell 1 and the lock cylinder body 2 in a concentric circle state under the extrusion of the seal beads 11, the springs 10 and the upper marbles 9 according to the tooth-pattern tooth shape of the V-shaped groove 31 of the key 3, and are level with the circumference of the lock cylinder body, and the lock cylinder body can rotate; the key 3 is used to rotate the lock cylinder body 2 to drive the rotating piece 5 and the unlocking shifting fork 4 to realize the unlocking function.

When the key 3 is pulled out, the T-shaped marble 8 has no support of the key 3, and can fall into a marble hole 21 of the lock cylinder body 2 to form a negative value with the circumferential surface of the lock cylinder body 2 under the pressure of the upper marble 9, the spring 10 and the seal bead 11, and the upper marble 9 can also fall into the marble hole 21 to form a cross to realize a locking function; after the key 3 is pulled out, the movable piece 7 forms messy codes in the second sliding groove 62 of the stainless steel insert 6 and the second sliding groove of the lock cylinder body 2 under natural gravity, so that the outer convex part 71 is not in the middle of the elliptical hole 61, the diameter of the residual space of the elliptical hole 61 is larger than that of the upper marble 9, and when the lock cylinder body 2 rotates clockwise and anticlockwise for 90 degrees, the upper marble 9 falls into the elliptical hole 61 to form locking again to realize secondary locking because the diameter of the residual space of the elliptical hole 61 is larger than that of the upper marble 9.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to explain the principles of the invention, and that various modifications and alterations can be made by those skilled in the art without departing from the spirit and scope of the invention.