CN108331466B - chain lock - Google Patents

Abstract

The present invention provides a chain lock, which is mainly provided with a lock body, a chain slot is provided in the lock body, a compression spring is provided in the accommodation chamber of the convex seat of the lock body, a lock core seat is also provided in the accommodation chamber of the convex seat of the lock body, a lock core is provided in the accommodation groove of the lock core seat, a connecting seat is provided below the lock core seat and is provided in the accommodation chamber of the lock body, the connecting seat is supported on the compression spring, an insert rod whose upper end is passed through the through hole of the connecting seat and inserted into the inserting slot of the lock core, the bottom end of the insert rod is extended through the through hole of the lock body, one end of a chain is fixed in one end of the chain slot of the lock body by the fixing bolt, and the other end of the chain is buckled in the other end of the chain slot of the lock body by the insert rod. In this way, objects can be locked conveniently and the best anti-theft effect can be achieved.

Description

chain lock

technical field

The invention relates to a chain lock, in particular to an item that can be easily locked and can achieve the best anti-theft effect.

Background technique

General chain locks are mainly used to lock objects on fixed objects, for example, to lock bicycles on pillars, and the structure of general chain locks 1, as shown in Figure 1, consists of two ends of a chain 10. A lock 11 that can be locked with each other is connected, and the lock 11 is a check lock or a padlock, mainly to prevent the locked items from being moved to prevent the items from being stolen. However, in the existing chain lock 1, the lock device 11 and the chain 10 are separated, the lock device 11 is easy to lose, and the locking structure of the lock device 11 is extremely simple, and a thief can easily unlock or destroy the lock device 11 with a tool. The anti-theft effect is not ideal.

SUMMARY OF THE INVENTION

The main purpose of the present invention is to provide a chain lock that can effectively solve the shortcomings of the existing chain locks in use.

The chain lock of the present invention includes:

a lock body, the lock body is provided with a chain slot, the top surface of the lock body is provided with a first through hole communicating with the chain slot, and the bottom surface of the lock body is provided with a second through hole at a position corresponding to the first through hole , a fixing bolt penetrates through the first through hole and the chain slot and penetrates into the second through hole, one end of the fixing bolt is provided with a ring groove, and a positioning sleeve is inserted into the second hole of the lock body The through hole is sleeved on one end of the fixing bolt, the positioning sleeve is provided with a concave hole, the concave hole is protruded with a rim for being embedded in the annular groove of the fixing bolt, and the lock body is provided with a The convex seat is provided with a chamber, the inner ring of the chamber is provided with a positioning groove, the diameter of the positioning groove is larger than the diameter of the chamber and is in the shape of a circular arc, and a fixing hole is provided on the wall surface of the boss, The fixing hole communicates with the accommodating chamber, and a fixing post is inserted into the fixing hole. The bottom of the accommodating chamber is provided with a through hole that communicates with the chain slot. The inner wall of the chain slot of the lock body corresponds to the chain slot. The position of the through hole is provided with an insertion slot;

a compression spring, arranged in the cavity of the convex seat of the lock body;

A lock core seat is arranged in the accommodating chamber of the convex seat of the lock body, the lock core seat is provided with a key socket, the lock core socket is provided with an accommodating groove, and the key socket is communicated with the accommodating groove, The wall surface of the accommodating groove is provided with a limit groove, the wall surface of the lock core seat is provided with a guide groove for the end of the fixing column to be set in, and the wall surface of the lock core seat is further provided with a positioning hole, a positioning steel ball set in the positioning hole, the wall surface of the lock core seat is further provided with a positioning pin hole, a positioning pin is inserted in the positioning pin hole, and the bottom surface of the lock core seat is provided with an insertion hole;

A lock core is installed in the accommodating groove of the lock core seat, the bottom of the lock core is provided with a convex body, the convex body is provided with an insertion slot, and the wall surface of the convex body is provided with an arc-shaped groove, the The arc-shaped groove is communicated with the insertion slot, the wall surface of the convex body is further provided with a through hole, a fixing pin is inserted into the through hole on the wall surface of the convex body, and the wall surface of the lock core is provided with a cut groove, a A part of the limit post is set in the cut slot, and the other part of the limit post is set in the limit slot of the lock core seat;

A connecting seat is arranged below the lock core seat and inside the container of the lock body. There is an arc-shaped slot, the bottom of the connection seat is provided with a socket, a coil spring is arranged between the connection seat and the lock core seat, and one end of the coil spring is inserted into the socket of the lock core seat, the The other end of the coil spring is inserted into the socket of the connector;

an insertion rod, the upper end of which is inserted into the through hole of the connecting seat and inserted into the insertion groove of the lock core, and the bottom end of the insertion rod extends through the through hole of the lock body, the insertion rod The upper end of the rod is provided with a protruding post, the protruding post is provided with a pin hole, the pin hole of the insertion rod is inserted into the fixing pin that penetrates the lock core, and the insertion rod and the lock core are integrated into one ;

A chain, one end of which is fixed in one end of the chain slot of the lock body, and the other end of the chain is locked in the other end of the chain slot of the lock body by the insertion rod.

The chain lock of the present invention has the advantages that the lock body and the chain are connected together and will not be lost, and the overall structure is hidden inside the lock body, which is not easy to be damaged, and it is difficult to unlock without the correct key, and has excellent anti-theft effect.

Description of drawings

Figure 1 is a schematic diagram of the use of the existing chain lock.

FIG. 2 is a perspective combined view of an embodiment of the present invention.

FIG. 3 is an exploded perspective view of the lock according to the embodiment of the present invention.

FIG. 4 is an exploded perspective view of the chain and the lock according to the embodiment of the present invention.

FIG. 5 is a combined cross-sectional view of the lock according to the embodiment of the present invention.

FIG. 6 is another schematic cross-sectional view of the lock according to the embodiment of the present invention.

FIG. 7 is a schematic cross-sectional view of the lock according to the embodiment of the present invention when it is locked.

FIG. 8 is a schematic diagram of use when the embodiment of the present invention is locked.

Description of reference numerals: 1 chain lock; 10 chain; 11 lock; 2 lock body; 20 chain slot; 21 first perforation; 22 second perforation; 23 fixing bolt; 230 ring groove; 24 positioning sleeve; 241 flange; 25 convex seat; 250 chamber; 251 positioning slot; 252 fixing hole; 26 fixing post; 27 through hole; slot; 42 limit slot; 43 guide slot; 44 positioning hole; 45 positioning steel ball; 46 positioning pin hole; 47 positioning pin; 48 socket; 5 lock core; 50 convex body; ;53 perforation; 54 fixed pin; 55 slot; 56 limit post; 6 connection seat; 60 perforation; 61 arc cut surface; 62 arc through slot; 63 jack; 64 coil spring; one end of 640; the other end of 641; 7 70 post; 71 pin hole; 8 chain; 80 one end; 81 the other end.

Detailed ways

In order to achieve the above-mentioned purpose of use and effect of the present invention, the technical means adopted are hereby citing preferable feasible embodiments, and shown in the drawings, detailed as follows:

The embodiment of the present invention, please refer to FIG. 2, FIG. 3, FIG. 4, and FIG. 5, mainly includes a lock body 2, the lock body 2 is provided with a chain slot 20, and the top surface of the lock body 2 is provided with a communication In the first through hole 21 of the chain slot 20 , a second through hole 22 is defined on the bottom surface of the lock body 2 corresponding to the first through hole 21 , and a fixing bolt 23 passes through the first through hole 21 and the chain insert. The groove 20 is inserted into the second through hole 22, one end of the fixing bolt 23 is provided with a ring groove 230, and a positioning sleeve 24 is inserted into the second through hole 22 of the lock body 2 and sleeved on the fixing bolt 23. On one end of the bolt 23, the positioning sleeve 24 is provided with a concave hole 240, the concave hole 240 is protruded with a rim 241 for being embedded in the annular groove 230 of the fixing bolt 23, and the lock body 2 is provided with a The convex seat 25 is provided with a chamber 250, and a positioning groove 251 is arranged in the inner ring of the chamber 250. The diameter of the positioning groove 251 is larger than the diameter of the chamber 250 and is arranged in an arc shape. 25 is provided with a fixing hole 252 on the wall surface, the fixing hole 252 communicates with the accommodating chamber 250, a fixing post 26 is inserted into the fixing hole 252, and the bottom of the accommodating chamber 250 is provided with a connecting hole 250 connected to the chain slot 20. A through hole 27, the inner wall surface of the chain slot 20 of the lock body 2 is provided with an insertion slot 28 corresponding to the position of the through hole 27; Inside; a lock core seat 4, located in the chamber 250 of the convex seat 25 of the lock body 2, the lock core seat 4 is provided with a key socket 40, and the lock core seat 4 is provided with an accommodating slot 41, The key socket 40 is communicated with the accommodating groove 41 , a limiting groove 42 is formed on the wall surface of the accommodating groove 41 , and a guide groove for the end of the fixing post 26 is formed on the wall surface of the lock cylinder seat 4 43. A positioning hole 44 is provided on the wall surface of the lock core seat 4, a positioning steel ball 45 is set in the positioning hole 44, and a positioning pin hole 46 is provided on the wall surface of the lock core seat 4. A positioning pin 47 Inserted into the positioning pin hole 46, a socket 48 is provided on the bottom surface of the lock core seat 4; a lock core 5 is set in the accommodating groove 41 of the lock core A convex body 50 is provided with an insertion groove 51 in the convex body 50, and an arc-shaped groove 52 is formed on the wall surface of the convex body 50. The arc-shaped groove 52 communicates with the insertion groove 51. The convex body 50 There is another hole 53 on the wall of the lock core 53, a fixing pin 54 is inserted in the hole 53, a slot 55 is arranged on the wall of the lock core 5, and a part of a limit post 56 is arranged in the slot 55, the The other part of the limit post 56 is arranged in the limit slot 42 of the lock core seat 4 ; a connecting seat 6 is arranged below the lock core seat 4 and is arranged in the chamber 250 of the lock body 2 . The connection seat 6 is provided with a through hole 60 , the inner wall of the through hole 60 of the connection seat 6 is provided with an arc cut surface 61 , the wall surface of the connection seat 6 is provided with an arc-shaped through groove 62 , and the bottom of the connection seat 6 is provided with an insertion hole 63 , a coil spring 64 is arranged on the connection seat 6 and the lock core seat 4 In between, one end 640 of the coil spring 64 is inserted into the insertion hole 48 of the lock core seat 4, and the other end 641 of the coil spring 64 is inserted into the insertion hole 63 of the connection seat 6; an insertion rod 7 , its upper end is inserted into the through hole 60 of the connecting seat 6 and inserted into the insertion slot 51 of the lock core 5, and the bottom end of the insertion rod 7 extends through the through hole 27 of the lock body 2, The upper end of the insertion rod 7 is provided with a protruding post 70, and a pin hole 71 is provided on the protruding post 70. The pin hole 71 of the insertion rod 7 is used for the fixing pin 54 passing through the lock core 5 to be inserted; a One end 80 of the chain 8 is fastened in one end of the chain slot 20 of the lock body 2 , and the other end 81 of the chain 8 is set in the other end of the chain slot 20 of the lock body 2 , so, it is A chain lock structure.

When assembling, please refer to FIG. 3 to FIG. 5 , first insert the insertion rod 7 through the through hole 60 of the connecting base 6 , and set the protruding column 70 of the insertion rod 7 into the insertion slot 51 of the lock core 5 Inside, the fixing pin 54 is inserted into the through hole 53 of the lock core 5 and the pin hole 71 of the insertion rod 7, the lock core 5 and the insertion rod 7 are assembled together, and then the coil spring 64 is sleeved on the connecting seat 6. , insert the other end 641 of the coil spring 64 into the socket 63 of the connecting seat 6, set the limit post 56 into the slot 55 of the lock core 5, and then set the lock core 5 into the lock core seat In the accommodating groove 41 of Insert the positioning pin 47 into the pin hole 46 of the lock core seat 4, and insert a part of the positioning pin 47 into the arc-shaped through-groove 62 of the connecting seat 6 and the arc-shaped groove 52 of the lock core 5, so that the lock core 5. The connection seat 6 and the insertion rod 7 are assembled with the lock core seat 4 as a whole, and the positioning steel ball 45 is set in the positioning hole 44 of the lock core seat 4, and a part of the positioning steel ball 45 is also set in the connecting seat. In the arc-shaped through groove 62 of In the chamber 250, the lower end of the insertion rod 7 is inserted into the compression spring 3 and into the through hole 27 of the lock body 2, and then the fixing post 26 is inserted into the fixing hole 252 of the convex seat 25, so that the fixing The inner end of the column 26 is set in the guide groove 43 of the lock core seat 4, so that the lock core seat 4 and its assembled components are positioned in the accommodating chamber 250 of the lock body 2, and the connecting seat 6 is abutted against. On the compression spring 3, one end 80 of the chain 8 is placed in one end of the chain slot 20 of the lock body 2, and then the fixing bolt 23 is inserted into the first through hole 21 of the lock body 2, one end 80 of the chain 8 and The positioning sleeve 24 is inserted into the second through hole 22, so that the rim 241 of the positioning sleeve 24 is embedded in the annular groove 230 of the fixing bolt 23, so that the fixing bolt 23 will not pass through the first through hole 22. 21, and by virtue of the combination of the fixing bolt 23 and the positioning sleeve 24, one end 80 of the chain 8 is fixed in the chain slot 20 of the lock body 2, and the other end 81 of the chain 8 is set in the lock body 2. In the other end of the chain slot 20, the other end 81 of the chain 8 and the insertion slot 28 can be inserted downward by means of the insertion rod 7, and the other end 81 of the chain 8 can be positioned in the chain slot of the lock body 2. In the groove 20, in this way, the whole assembly can be completed.

When in use, please refer to FIGS. 5 to 8 , thread the chain 8 of the present invention around the object to be locked, such as the frame or wheel of a bicycle, and then insert the other end 81 of the chain 8 into the lock. In the chain slot 20 of the main body 2, align the other end 81 of the chain 8 with the position of the insertion hole 28 and the through hole 27 of the lock main body 2 (as shown in Figure 5), and then align the outwardly protruding lock core seat 4 to The convex seat 25 of the lock body 2 is pressed in, and the lock core seat 4 drives the lock core 5, the coil spring 64, the connecting seat 6 and the insertion rod 7 to move down, and the compression spring 3 is pressed and held, so that the compression spring 3 is in the In the elastically compressed state, the lower end of the insertion rod 7 penetrated through the through hole 27 of the lock body 2 is inserted into the other end 81 of the chain 8 and inserted into the chain slot 20 and the insertion slot 28 of the lock body 2 Inside, when the lock core seat 4 is pressed down, the positioning steel ball 45 in the positioning hole 44 of the lock core seat 4 moves down accordingly and is located in the positioning groove 251 of the lock body 2. 26 cannot rotate, so when the coil spring 64 is elastically restored, the other end 641 of the coil spring 641 drives the connecting seat 6 to rotate, and because the connecting seat 6 is provided with an arc-shaped through groove 62, the positioning pin 47 is located in the arc-shaped through groove 62. In the groove 62, when the connecting seat 6 is driven to rotate by the coil spring 64, the lock core 5 and the insertion rod 7 will not be driven, and the connecting seat 6 is driven by the elastic recovery of the coil spring 64, and its arc-shaped groove penetrates 62 is separated from the position of the positioning hole 44 corresponding to the lock core seat 4, so that the outer wall surface of the connecting seat 6 abuts the positioning steel ball 45 provided in the positioning hole 44 of the lock core seat 4, and pushes the positioning steel ball 45 outward. , a part of the positioning steel ball 45 is moved outward and embedded into the positioning groove 251 in the convex seat 25 of the lock body 2 (as shown in FIG. 6 ), so that the locking action can be completed. The present invention relies on the fixing bolt 23 and positioning The sleeve 24 fixes one end 80 of the chain 8 in the chain slot 20 of the lock body 2, and the other end 81 of the chain 8 can be stably fixed by the embedded setting of the positioning steel ball 45 and the buckle of the insertion rod 7. The lock is locked in the chain slot 20 of the lock body 2 (as shown in Figures 7 and 8). With the lock structure of the present invention, the thief cannot know the internal lock structure from the appearance, so the best anti-theft effect can be achieved. When wanting to unlock, only need to use the key (not shown in the figure) to be inserted into the key hole 40 of the lock core seat 4, so that the key goes deep into the lock core 5, and when the key drives the lock core 5 to rotate, the lock core 5 and rely on the fixed pin 54 to link the connecting seat 6 to rotate, when the connecting seat 6 rotates, the connecting seat 6 drives the coil spring 64 to be in an elastic torsion state, and the arc-shaped through groove 62 of the connecting seat 6 is again connected with the lock core seat. Corresponding to the positioning hole 44 of 4, the positioning steel ball 45 embedded in the positioning groove 251 of the lock body 2 can be pushed inward along the arc surface of the positioning groove 251 because it is no longer pressed by the outer wall surface of the connecting seat 6. The arc-shaped through groove 62 of the connecting seat 6 is no longer embedded in the positioning groove 251 of the lock body 2, while the compression spring 3 provided in the chamber 250 of the lock body 2 elastically restores the connecting seat 6. And the lock core seat 4 is pushed upward (as shown in Figure 5), so that the upper part of the lock core seat 4 protrudes out of the lock Outside the body 2, the insertion rod 7 moves up with the lock core seat 4 and is separated from the insertion slot 28 of the lock body 2 and the other end 80 of the chain 8, and the chain 8 can be taken out from the chain slot 20 of the lock body 2. , in this way, the unlocking action can be completed, the present invention is very convenient to use, can be used for the locking and positioning of any item, and has excellent anti-theft effect.

The above description is only illustrative rather than restrictive for the present invention. Those skilled in the art understand that many modifications, changes or equivalents can be made without departing from the spirit and scope defined by the claims. All will fall within the protection scope of the present invention.

Claims (1)

1. a chain lock is characterized in that including: a lock body, the lock body is provided with a chain slot, the top surface of the lock body is provided with a first through hole communicating with the chain slot, and the bottom surface of the lock body is provided with a second through hole at a position corresponding to the first through hole , a fixing bolt penetrates through the first through hole and the chain slot and penetrates into the second through hole, one end of the fixing bolt is provided with a ring groove, and a positioning sleeve is inserted into the second hole of the lock body The through hole is sleeved on one end of the fixing bolt, the positioning sleeve is provided with a concave hole, the concave hole is protruded with a rim for being embedded in the annular groove of the fixing bolt, and the lock body is provided with a A convex seat, the convex seat is provided with a chamber, the inner ring of the chamber is provided with a positioning groove, the diameter of the positioning groove is larger than the diameter of the chamber and is in the shape of an arc, the wall surface of the convex seat is provided with a fixing hole, the The fixing hole communicates with the accommodating chamber, a fixing post is inserted into the fixing hole, the bottom of the accommodating chamber is provided with a through hole which is communicated with the chain slot, and the inner wall surface of the chain slot of the lock body corresponds to the through hole. The position of the hole is provided with an insertion slot; a compression spring, arranged in the cavity of the convex seat of the lock body; A lock core seat is arranged in the accommodating chamber of the convex seat of the lock body, the lock core seat is provided with a key socket, the lock core socket is provided with an accommodating groove, and the key socket is communicated with the accommodating groove, The wall surface of the accommodating groove is provided with a limit groove, the wall surface of the lock core seat is provided with a guide groove for the end of the fixing column to be set in, and the wall surface of the lock core seat is further provided with a positioning hole, a positioning steel ball set in the positioning hole, the wall surface of the lock core seat is further provided with a positioning pin hole, a positioning pin is inserted in the positioning pin hole, and the bottom surface of the lock core seat is provided with an insertion hole; A lock core is installed in the accommodating groove of the lock core seat, the bottom of the lock core is provided with a convex body, the convex body is provided with an insertion slot, and the wall surface of the convex body is provided with an arc-shaped groove, the The arc-shaped groove is communicated with the insertion slot, the wall surface of the convex body is further provided with a through hole, a fixing pin is inserted into the through hole on the wall surface of the convex body, and the wall surface of the lock core is provided with a cut groove, a A part of the limit post is set in the cut slot, and the other part of the limit post is set in the limit slot of the lock core seat; A connecting seat is arranged below the lock core seat and inside the container of the lock body. There is an arc-shaped slot, the bottom of the connection seat is provided with a socket, a coil spring is arranged between the connection seat and the lock core seat, and one end of the coil spring is inserted into the socket of the lock core seat, the The other end of the coil spring is inserted into the socket of the connector; an insertion lever, the upper end of which is inserted into the through hole of the connecting seat and inserted into the insertion slot of the lock core, the bottom end of the insertion lever is inserted through the through hole of the lock body, the insertion lever The upper end is provided with a protruding post, the protruding post is provided with a pin hole, the pin hole of the inserting rod is inserted into the fixing pin that penetrates through the lock core, and the inserting rod and the lock core are integrated into one; A chain, one end of which is fixed in one end of the chain slot of the lock body, and the other end of the chain is locked in the other end of the chain slot of the lock body by the insertion rod.