Folding lock structure

Abstract

The invention provides a folding lock structure, which is provided with a lock body and a folding plate group, the lock body is provided with an outer pipe, a cover body, an inner body, a lock cylinder, a fixed seat, a torsion spring, a transmission block, a brake rod, a buckle seat, a connecting block, a shell and a buckle seat bottom plate, the folding plate set is composed of a plurality of connecting plates, a fixed connecting plate and a lock catch connecting plate, during unlocking, a key is used for rotating the lock cylinder to drive the fixed base to rotate, the torsion spring is driven to twist, a lock cylinder rod of the lock cylinder is linked with the transmission block to rotate, a guide steel ball located on the transmission block slides along a guide groove of the inner body, and the lock catch is locked. When the brake rod is driven to move, then the transmission block and the brake rod are driven to move, the brake rod is separated from the insertion hole of the lock catch connecting plate, and when the positioning caulking groove of the brake rod moves to the position of the buckle steel ball of the connecting block, the buckle steel ball is pushed by the release rod to be clamped in the positioning caulking groove of the brake rod, so that the brake rod is positioned. And unlocking and positioning can be completed.

Description

TECHNICAL FIELD

[0001] The present invention relates to a folding lock structure which can be automatically locked and conveniently positioned. BACKGROUND

[0002] The most common locks for securing articles such as bicycles against theft are cable locks, U-shaped locks and folding locks. Although there are many types of locks for securing articles, folding locks are the most convenient. This is mainly because cable locks and U-shaped locks are bulky and heavy, and take up a lot of space when stored. Folding locks, on the other hand, can be reduced to the smallest size by folding, so that the size of the folded lock is relatively small. Most folding locks have a slot on the lock body for inserting one end of a locking plate of a folding piece group, and a lock cylinder drives a locking lever into the insertion hole of the locking plate to complete the locking action. However, the assembly of the components of conventional folding locks is relatively troublesome and time-consuming because the components must be fixed by fixed pins. The lock cylinder of conventional folding locks drives the rotation and lifting of the locking lever by a latch, which is prone to jamming and is not smooth when the key is turned. The key must be used to drive the lock and the unlocking, which is not ideal. SUMMARY

[0003] The main purpose of the present invention is to provide a folding lock structure which can effectively solve the problems of conventional folding locks in assembly and use.

[0004] The present application provides a folding lock structure, mainly comprising a lock body and a folding plate set. The lock body comprises an outer tube, a cover, an inner body, a lock cylinder, a fixed seat, a torsion spring, a transmission block, a brake lever, a buckle seat, a connecting block, a shell and a buckle seat bottom plate. One end of the outer tube is provided with an outer tube notch. A fixed ring groove is formed on the inner wall of the outer tube. The cover is fixed on one end of the outer tube. A keyhole is formed on the cover. One end of the cover is provided with a reinforcing plate. The inner body is arranged in the outer tube. A lock cylinder accommodating groove is formed in one end of the inner body. A chamber is formed in the other end of the inner body. A through hole is formed between the lock cylinder accommodating groove and the chamber. Two inclined guide grooves are oppositely arranged on the outer wall of the inner body. The two guide grooves are communicated with the chamber. A guide steel ball is arranged in each of the two guide grooves. The lock cylinder is arranged in the lock cylinder accommodating groove of the inner body. One end of the lock cylinder is provided with a fixed part. A keyhole is formed on the fixed part. The other end of the lock cylinder is provided with a lock cylinder lever. The lock cylinder is provided with a fixed insertion hole. The fixed seat is fixed on the lock cylinder lever of the lock cylinder by a first fixed pin. The fixed seat is provided with a lock cylinder lever hole for the lock cylinder lever. A fixed embedded hole is formed on the fixed seat. The torsion spring is arranged between the lock cylinder and the fixed seat. One end of the torsion spring is fixed in the fixed insertion hole of the lock cylinder. The other end of the torsion spring is fixed in the fixed embedded hole of the fixed seat. The fixed seat is located in the through hole of the inner body. The transmission block is arranged in the chamber of the inner body. A convex body is protruded on one side of the transmission block. A stepped perforation is formed in the middle of the transmission block. A fixed perforation is formed on the convex body and communicated with the stepped perforation. A second fixed pin is arranged in the fixed perforation. A steel ball hole is oppositely arranged on the outer wall of the transmission block. A part of the guide steel ball arranged in the guide groove of the inner body is located in the steel ball hole. The brake lever is connected to the convex body of the transmission block by the second fixed pin. One end of the brake lever is provided with a fixed recess. A positioning embedded groove is annularly arranged on the wall surface of the other end of the brake lever. One end surface of the buckle seat is provided with a connecting convex body. The connecting convex body is arranged in the outer tube. The other end surface of the buckle seat is provided with a positioning flange. A recess is arranged in the buckle seat. A buckle seat notch communicated with the recess is formed on the wall surface of the buckle seat. A accommodating groove communicated with the recess is arranged in the connecting convex body. A plurality of steel ball holes communicated with the accommodating groove are formed on the wall surface of the connecting convex body. A fixed steel ball is arranged in each of the steel ball holes. The connecting block is arranged in the accommodating groove of the buckle seat. A plurality of assembly recesses are arranged on one end edge of the connecting block. A positioning recess is arranged on one end surface of the connecting block. A communicating hole communicated with the positioning recess is arranged on the other end surface of the connecting block. A through groove communicated with the communicating hole is arranged on the wall surface of the connecting block. A clamping steel ball is arranged in the through groove. A release rod perforation penetrating through the through groove and the other end surface of the connecting block is arranged on one end surface of the connecting block. A release rod and a compression spring are arranged in the release rod perforation. One end of the release rod is provided with a release end with a smaller diameter. The shell is fixed on the buckle seat.The wall of the shell is provided with an insertion groove corresponding to the position of the seat notch of the seat, and the seat bottom plate is arranged in the shell, and one end surface of the seat bottom plate is provided with a positioning ring groove for the positioning flange of the seat, and the folding plate set is composed of a plurality of connecting plates, a fixed connecting plate and a lock connecting plate, the plurality of connecting plates, the fixed connecting plate and the lock connecting plate are stacked with each other and are connected by the pivot elements, one side surface of one end of the fixed connecting plate is provided with a lock core fixing groove, the other side surface of the fixed connecting plate is provided with a key hole connected to the lock core fixing groove, one end of the fixed connecting plate is arranged in the outer pipe notch of the outer pipe and is fixed to the cover body and the reinforcing plate, the fixed part of the lock core is arranged in the lock core fixing groove of the fixed connecting plate, and one end of the lock connecting plate is arranged in the insertion groove of the shell and the seat notch of the seat, and one end of the lock connecting plate is provided with an insertion hole and an inclined surface, and the insertion hole is arranged for the insertion of the stop rod.

[0005] The folding lock structure of the present application, wherein the fixed part of the lock core is provided with a sliding groove, the sliding groove is provided with a key hole, two dust covers and two return springs are arranged in the sliding groove of the lock core, the opposite inner sides of the two dust covers are provided with inclined surfaces, and the two return springs are arranged on the opposite outer sides of the two dust covers and abut against the two dust covers. By arranging the two dust covers, the key hole can be shielded, and dust can be prevented from entering the inside of the lock core.

[0006] The folding lock structure of the present application, wherein the wall of the seat is further provided with a spring containing groove connected to the recess, and a push spring is arranged in the spring containing groove, and the push spring is arranged on the end surface of the lock connecting plate.

[0007] The folding lock structure of the present application has the advantages of convenient assembly, saving assembly time, automatic locking without using a key, positioning the stop rod after unlocking with the key, facilitating the removal of the lock connecting plate from the lock body, convenient use of unlocking and locking, and achieving the best anti-theft effect. BRIEF DESCRIPTION OF DRAWINGS

[0008] Figure 1 The folding lock structure of the present application has the advantages of convenient assembly, saving assembly time, automatic locking without using a key, positioning the stop rod after unlocking with the key, facilitating the removal of the lock connecting plate from the lock body, convenient use of unlocking and locking, and achieving the best anti-theft effect.

[0009] Figure 2 The folding lock structure of the present application has the advantages of convenient assembly, saving assembly time, automatic locking without using a key, positioning the stop rod after unlocking with the key, facilitating the removal of the lock connecting plate from the lock body, convenient use of unlocking and locking, and achieving the best anti-theft effect.

[0010] Figure 3 The folding lock structure of the present application has the advantages of convenient assembly, saving assembly time, automatic locking without using a key, positioning the stop rod after unlocking with the key, facilitating the removal of the lock connecting plate from the lock body, convenient use of unlocking and locking, and achieving the best anti-theft effect.

[0011] Figure 4 The folding lock structure of the present application has the advantages of convenient assembly, saving assembly time, automatic locking without using a key, positioning the stop rod after unlocking with the key, facilitating the removal of the lock connecting plate from the lock body, convenient use of unlocking and locking, and achieving the best anti-theft effect.

[0012] Figure 5The combination profile view of the embodiment of the present application is shown.

[0013] Figure 6 The combination profile view of another angle of the embodiment of the present application is shown.

[0014] Figure 7 The profile view of the key insertion into the lock body to open the lock of the embodiment of the present application is shown.

[0015] Reference signs: 1 lock body; 10 outer tube; 100 cover body; 1001 key insertion hole; 1002 reinforcing plate; 101 outer tube notch; 102 fixing ring groove; 11 inner body; 111 lock core accommodating groove; 112 accommodating chamber; 113 through hole; 114 guide groove; 115 guide steel ball; 12 lock core; 121 fixed part; 122 sliding groove; 123 key insertion hole; 124 lock core rod; 125 fixed insertion hole; 126 dustproof cover; 1261 bevel surface; 127 return spring; 13 fixing seat; 130 torsion spring; 1301 one end; 1302 the other end; 131 first fixing pin; 132 lock core rod hole; 133 fixed embedding hole; 14 transmission block; 141 convex body; 142 stepped perforation; 143 fixed perforation; 144 second fixing pin; 145 steel ball hole; 15 brake rod; 151 fixed groove; 152 pin hole; 153 positioning embedding groove; 16 buckle seat; 161 connecting convex body; 162 positioning flange; 163 concave chamber; 164 buckle seat notch; 165 accommodating groove; 166 steel ball hole; 167 fixed steel ball; 168 spring accommodating groove; 169 push spring; 17 connecting block; 171 assembly groove; 172 positioning groove; 173 communication hole; 174 through groove; 175 clamping steel ball; 176 release rod perforation; 177 release rod; 1771 release end; 178 compression spring; 18 outer shell; 181 insertion groove; 19 buckle seat bottom plate; 191 positioning ring groove; 2 folding plate group; 20 connecting plate; 21 fixed connecting plate; 211 lock core fixing groove; 212 key insertion hole; 22 lock buckle connecting plate; 221 insertion hole; 222 bevel surface; 23 pivoting element; A key. DETAILED DESCRIPTION

[0016] In order to achieve the above-mentioned use purposes and effects, the technical means adopted by the present application is described in detail as follows by taking the preferred embodiments and in combination with the drawings shown:

[0017] Please refer to Figures 1-3As shown, the folding lock structure of the present application is mainly composed of a lock body 1 and a folding plate set 2. The lock body 1 is composed of an outer tube 10, a cover 100, an inner body 11, a lock cylinder 12, a fixed seat 13, a torsion spring 130, a transmission block 14, a brake lever 15, a clamping seat 16, a connecting block 17, a shell 18 and a clamping seat bottom plate 19. One end of the outer tube 10 is provided with an outer tube notch 101, and the inner wall surface of the outer tube 10 is provided with a fixed ring groove 102. The cover 100 is fixed to one end of the outer tube 10. The cover 100 is provided with a key insertion hole 1001, and one end of the cover 100 is provided with a reinforcing plate 1002. The inner body 11 is arranged in the outer tube 10. One end of the inner body 11 is provided with a lock cylinder accommodating groove 111, and the other end of the inner body 11 is provided with a chamber 112. A through hole 113 is arranged between the lock cylinder accommodating groove 111 and the chamber 112. Two inclined guide grooves 114 are oppositely arranged on the outer wall surface of the inner body 11, and the two guide grooves 114 are communicated with the chamber 112. Two guide steel balls 115 are respectively arranged in the two guide grooves 114. The lock cylinder 12 is arranged in the lock cylinder accommodating groove 111 of the inner body 11. One end of the lock cylinder 12 is provided with a fixed part 121, and the fixed part 121 is provided with a sliding groove 122. The sliding groove 122 is provided with a key insertion hole 123. The other end of the lock cylinder 12 is provided with a lock cylinder lever 124, and the other end surface of the lock cylinder 12 is provided with a fixed insertion hole 125. Two dust covers 126 and two return springs 127 are arranged in the sliding groove 122 of the lock cylinder 12. The opposite inner sides of the two dust covers 126 are provided with inclined surfaces 1261. The two return springs 127 are respectively arranged on the opposite outer sides of the two dust covers 126. The fixed seat 13 is fixed to the lock cylinder lever 124 of the lock cylinder 12 by a first fixed pin 131. The fixed seat 13 is provided with a lock cylinder lever hole 132 for the lock cylinder lever 124 to pass through. The fixed seat 13 is provided with a fixed embedded hole 133. The torsion spring 130 is arranged between the lock cylinder 12 and the fixed seat 13. One end 1301 of the torsion spring 130 is fixed in the fixed insertion hole 125 of the lock cylinder 12, and the other end 1302 of the torsion spring 130 is fixed in the fixed embedded hole 133 of the fixed seat 13. The fixed seat 13 is located in the through hole 113 of the inner body 11. The transmission block 14 is arranged in the chamber 112 of the inner body 11. One side of the transmission block 14 protrudes a protruding body 141. A stepped through hole 142 is arranged in the transmission block 14. A fixed through hole 143 is arranged on the protruding body 141 and communicated with the stepped through hole 142. A second fixed pin 144 passes through the fixed through hole 143. Two steel ball holes 145 are oppositely arranged on the outer wall surface of the transmission block 14. A part of the guide steel ball 115 arranged in the guide groove 114 of the inner body 11 is located in the steel ball hole 145. The brake lever 15 is connected to the protruding body 141 of the transmission block 14. One end of the brake lever 15 is provided with a fixed recess 151.The wall surface of one end of the brake lever 15 is provided with a pin hole 152 for the second fixing pin 144, and the wall surface of the other end of the brake lever 15 is provided with a positioning slot 153. One end surface of the buckle base 16 is provided with a connecting convex body 161 which is arranged in the outer tube 10. The other end surface of the buckle base 16 is provided with a positioning flange 162. The buckle base 16 is provided with a recess 163. The wall surface of the buckle base 16 is provided with a buckle gap 164 which is communicated with the recess 163. The connecting convex body 161 is provided with a containing groove 165 which is communicated with the recess 163. The wall surface of the connecting convex body 161 is provided with a plurality of steel ball holes 166 which are communicated with the containing groove 165. Each of the steel ball holes 166 is provided with a fixed steel ball 167. The wall surface of the buckle base 16 is further provided with a spring containing groove 168. The spring containing groove 168 is provided with a pushing spring 169. The connecting block 17 is arranged in the containing groove 165 of the buckle base 16. One end edge of the connecting block 17 is provided with a plurality of assembling grooves 171. One end surface of the connecting block 17 is provided with a positioning groove 172. The other end surface of the connecting block 17 is provided with a communicating hole 173 which is communicated with the positioning groove 172. The wall surface of the connecting block 17 is provided with a through groove 174 which is communicated with the communicating hole 173. The through groove 174 is provided with a clamping steel ball 175. One end surface of the connecting block 17 is provided with a release rod through hole 176 which penetrates through the through groove 174 and the other end surface of the connecting block 17. The release rod through hole 176 is provided with a release rod 177 and a compression spring 178. One end of the release rod 177 is provided with a release end 1771 which has a smaller diameter. The shell 18 is fixedly arranged on the buckle base 16. The wall surface of the shell 18 is provided with an insertion slot 181. The buckle base bottom plate 19 is arranged in the shell 18. One end surface of the buckle base bottom plate 19 is provided with a positioning ring groove 191 in which the positioning flange 162 of the buckle base 16 is arranged. The folding lock structure is composed of a plurality of connecting plates 20, a fixed connecting plate 21 and a lock buckle connecting plate 22. The plurality of connecting plates 20, the fixed connecting plate 21 and the lock buckle connecting plate 22 are stacked and pivotally connected by the pivot connecting elements 23. One side surface of one end of the fixed connecting plate 21 is provided with a lock core fixing groove 211. The other side surface of the fixed connecting plate 21 is provided with a key insertion hole 212 which is communicated with the lock core fixing groove 211. One end of the fixed connecting plate 21 is arranged in the outer tube gap 101 of the outer tube 10 and is fixed on the cover 100 and the reinforcing plate 1002. One end of the lock buckle connecting plate 22 is arranged in the insertion slot 181 of the shell 18 and the buckle gap 164 of the buckle base 16. One end of the lock buckle connecting plate 22 is provided with an insertion hole 221 and an inclined surface 222. Thus, the folding lock structure is formed.

[0018] Please refer to Figures 1-6As shown, when the present application is assembled, the torsion spring 130 is first assembled on the lock bar 124 of the lock cylinder 12, with one end 1301 of the torsion spring 130 inserted into the fixed insertion hole 125 of the lock cylinder 12, then the fixed seat 13 is assembled on the lock bar 124 of the lock cylinder 12, and the fixed seat 13 is fixed on the lock bar 124 by the first fixed pin 131, while the other end 1302 of the torsion spring 130 is embedded in the fixed embedding hole 133 of the fixed seat 13, then the above-mentioned assembled lock cylinder 12, fixed seat 13 and torsion spring 130 are assembled together in the lock cylinder accommodating groove 111 of the inner body 11, and the fixed seat 13 is arranged in the through hole 113 of the inner body 11, the one end of the brake lever 15 is inserted into the stepped perforation 142 of the transmission block 14, the brake lever 15 is fixed on the transmission block 14 by the second fixed pin 144 inserted into the fixed perforation 143 of the transmission block 14 and the pin hole 152 of the brake lever 15, then the transmission block 14 is arranged in the accommodating chamber 112 of the inner body 11, and the steel ball hole 145 of the transmission block 14 corresponds to the position of the guide groove 114 of the inner body 11, then the two guide steel balls 115 are respectively arranged in the two guide grooves 114 of the inner body 11 and the two steel ball holes 145 of the transmission block 14, and the lock bar 124 of the lock cylinder 12 is inserted into the stepped perforation 142 of the transmission block 14, the cover 100 and the fixed connecting plate 21 of the folding plate set 2 are fixed as a whole, the key insertion hole 1001 on the cover 100 corresponds to the key insertion hole 212 of the fixed connecting plate 21, and the cover 100 and the fixed connecting plate 21 are fixed on the outer tube 10, so that one end of the fixed connecting plate 21 is inserted into the outer tube notch 101 of the outer tube 10, the two dust covers 126 and the two return springs 127 are arranged opposite to each other in the sliding groove 122 of the lock cylinder 12, the two dust covers 126 are arranged opposite to each other with the beveled surfaces 1261, the two return springs 127 are respectively elastically abutted against the two dust covers 126, so that the opposite end surfaces of the two dust covers 126 are elastically abutted against each other, and the key insertion hole 123 of the lock cylinder 12 is shielded, then the above-mentioned components assembled in the inner body 11 are arranged together in the outer tube 10, and the fixed part 121 of the lock cylinder 12 is arranged in the lock cylinder fixed groove 211 of the fixed connecting plate 21, so that the lock cylinder 12 is fixed in the inner body 11, the clamping steel ball 175 is arranged in the through groove 174 of the connecting block 17, the release rod 177 and the compression spring 178 are arranged in the release rod perforation 176 of the connecting block 17, the clamping steel ball 175 is blocked in the through groove 174 by the release rod 177, then the connecting block 17 is assembled in the accommodating groove 165 of the clamping seat 16, so that the assembly groove 171 of the connecting block 17 is aligned with the position of the steel ball hole 166 of the clamping seat 16, and the fixed steel ball 167 is arranged in the steel ball hole 166 of the clamping seat 16 and the assembly groove 171 of the connecting block 17, then the connecting protrusion 161 of the clamping seat 16 is assembled in the outer tube 10, when the steel ball hole 166 of the clamping seat 16 is aligned with the fixed ring groove 102 of the outer tube 10,A portion of the fixed steel ball 167 is arranged in the fixed ring groove 102 of the outer tube 10. The connecting block 17 is pushed into the accommodating groove 165, so that the outer wall surface of the connecting block 17 abuts against the fixed steel ball 167, the fixed steel ball 167 is arranged in the steel ball hole 166 of the buckle seat 16 and the fixed ring groove 102 of the outer tube 10, the buckle seat 16 and the outer tube 10 are fixedly connected by the fixed steel ball 167, the push spring 169 is arranged in the spring accommodating groove 168 of the buckle seat 16, the buckle seat bottom plate 19 is arranged in the outer shell 18, the outer shell 18 is fixedly arranged on the buckle seat 16, the positioning flange 162 of the buckle seat 16 is arranged in the positioning ring groove 191 of the buckle seat bottom plate 19, the buckle seat gap 164 of the buckle seat 16 is aligned with the insertion groove 181 of the outer shell 18, the buckle seat bottom plate 19 and the buckle seat 16 are combined into one body, one end of the push spring 169 abuts against the inner wall surface of the outer shell 18, the end of the lock buckle connecting plate 22 of the folding plate set 2 is inserted into the insertion groove 181 of the outer shell 18 and the buckle seat gap 164 of the buckle seat 16, the lock buckle connecting plate 22 is elastically compressed by the push spring 169, the stop lever 15 is inserted into the insertion hole 221 of the lock buckle connecting plate 22, and thus the overall assembly is completed. The assembly of the present application is convenient and fast.

[0019] Please refer to Figures 5-7As shown, when the present application is used, when unlocking, the key A is inserted into the keyhole 123 of the lock cylinder 12 from the key insertion holes 1001, 212 of the cover 100 and the fixed connecting plate 21, when the key A is inserted into the key insertion holes 1001, 212, the end of the key A pushes the bevel surface 1261 of the two dust covers 126, so that the two dust covers 126 are in the state of being opened outward, and the reset spring 127 is in the state of being elastically compressed, and the key A can be inserted into the lock cylinder 12 to unlock and drive the lock cylinder rod 124 to rotate, the rotation of the lock cylinder rod 124 drives the fixed seat 13 and the transmission block 14 to rotate, the rotation of the fixed seat 13 drives the torsion spring 130 to be in the state of being elastically twisted, the rotation of the transmission block 14 drives the guide steel ball 115 to slide in the guide groove 114 of the inner body 11, and then drives the transmission block 14 to move into the cavity 112 of the inner body 11, and the transmission block 14 drives the brake rod 15 to move into the connecting block 17, so that the end of the brake rod 15 is separated from the insertion hole 221 of the lock catch connecting plate 22, when the brake rod 15 is no longer inserted and limited to the lock catch connecting plate 22, the push spring 169 is in the state of being elastically recovered to push the lock catch connecting plate 22 outward, so that the lock catch connecting plate 22 can be extracted from the insertion groove 181 of the outer shell 18, and thus the unlocking action is completed, when the positioning slot 153 on the wall surface of the brake rod 15 moves and is aligned with the position of the clamping steel ball 175 of the connecting block 17, and the end of the release rod 177 is no longer abutted on the lock catch connecting plate 22, the compression spring 178 is in the state of being elastically recovered to push the release rod 177 to move outward, so that the wall surface of the release rod 177 pushes the clamping steel ball 175, and a part of the clamping steel ball 175 is inserted into the positioning slot 153 of the brake rod 15, so as to position the brake rod 15 (as shown in Figure 7 As shown), so that the end of the brake rod 15 does not protrude into the recess 163 of the buckle seat 16, and the insertion of the lock catch connecting plate 22 is not blocked, so that when unlocking, the brake rod 15 can be positioned, and the lock catch connecting plate 22 can be inserted into the lock body 1 again for use; when locking, only the end of the lock catch connecting plate 22 is inserted into the recess 163 of the buckle seat 16 from the insertion groove 181 of the outer shell 18 of the lock body 1 and the buckle gap 164 of the buckle seat 16, the bevel surface 222 of the end of the lock catch connecting plate 22 guides and pushes the release end 1771 of the release rod 177, so that the release end 1771 of the release rod 177 is retracted into the release rod through hole 176 of the connecting block 17 and the compression spring 178 is in the state of being elastically compressed, and the release end 1771 corresponds to the position of the clamping steel ball 175, so that the clamping steel ball 175 is not abutted by the wall surface of the release rod 177 and can move to the release end 1771, when the insertion hole 221 of the lock catch connecting plate 22 is aligned with the position of the brake rod 15, the brake rod 15 is not clamped by the clamping steel ball 175, so that the torsion spring 130 is in the state of being elastically recovered to drive the fixed seat 13 and the transmission block 14 to rotate, the transmission block 14 is recovered to rotate, the guide steel ball 115 moves along the guide groove 114 and drives the transmission block 14 to move back to the original position (as shown in Figure 5When the lock is unlocked, the driving block 14 moves and the brake lever 15 moves again to be inserted into the insertion hole 221 of the lock plate 22, and the lock plate 22 is locked again. Thus, the locking operation is completed. The present application uses the buckle steel ball 175 and the release rod 177 to buckle and position the brake lever 15 when the lock is unlocked, so that the locking operation can be completed without using the key A when the lock is locked again. The application is very convenient to use and has a good anti-theft effect.

[0020] In summary, the present application has achieved the intended use and effect, and is more ideal and practical than the prior art. The above examples are only specific descriptions of the preferred embodiments of the present application and are not intended to limit the scope of the claims. Any equivalent changes and modifications made without departing from the technical means disclosed by the present application should be included in the scope of the claims.

Claims

1. A folding lock structure, comprising a lock body and a folding plate assembly, characterized in that: The lock body comprises an outer tube, a cover, an inner body, a lock cylinder, a fixing seat, a torsion spring, a transmission block, a brake lever, a buckle, a connecting block, an outer shell, and a buckle base plate. One end of the outer tube has an outer tube notch, and the inner wall of the outer tube has a fixing ring groove. The cover is fixed to one end of the outer tube and has a keyhole. One end of the cover has a reinforcing plate. The inner body is located inside the outer tube. One end of the inner body has a lock cylinder receiving groove, and the other end has a receiving chamber. A through hole connects the lock cylinder receiving groove and the receiving chamber. Two oblique guide grooves are arranged opposite each other on the outer wall of the inner body, connecting to the receiving chamber. A guide steel ball is inserted into each of the two guide grooves. The lock cylinder is... Within the lock cylinder receiving groove of the inner body, one end of the lock cylinder is a fixed part with a keyhole. The other end of the lock cylinder has a lock cylinder rod with a fixed insertion hole. A fixing seat is fixed to the lock cylinder rod by a first fixing pin. The fixing seat has a lock cylinder rod hole for the lock cylinder rod to pass through and a fixing recess. A torsion spring is located between the lock cylinder and the fixing seat. One end of the torsion spring is fixed in the fixing insertion hole of the lock cylinder, and the other end is fixed in the fixing recess of the fixing seat. The fixing seat is located within the through hole of the inner body. A transmission block is located within the chamber of the inner body. A protrusion is provided on one side of the transmission block, and a stepped through hole is provided in the middle of the transmission block. A fixing pin is provided on the protrusion. A perforation is connected to the stepped perforation, and a second fixing pin is inserted through the fixing perforation. A steel ball hole is provided opposite to the outer wall surface of the transmission block. A portion of the guide steel ball is located within the guide groove of the inner body and within the steel ball hole. The brake lever is connected to the protrusion of the transmission block by the second fixing pin. One end of the brake lever has a fixing groove, and the other end of the brake lever has a positioning groove circumferentially provided on its wall surface. One end face of the buckle has a connecting protrusion located inside the outer tube. The other end face of the buckle has a positioning flange. The buckle has a recess, and its wall surface has a buckle notch communicating with the recess. The connecting protrusion has a receiving groove communicating with the recess, and its wall surface has several steel balls communicating with the receiving groove. Each of the steel ball holes contains a fixing steel ball. The connecting block is located in the receiving groove of the buckle seat. Several assembly grooves are provided on one end of the connecting block. A positioning groove is provided on one end face of the connecting block. A connecting hole communicating with the positioning groove is provided on the other end face of the connecting block. A through groove communicating with the connecting hole is provided on the wall surface of the connecting block. A snap-fit ​​steel ball is located in the through groove. A release rod through hole is provided on one end face of the connecting block, penetrating the through groove and the other end face of the connecting block. A release rod and a compression spring are located in the release rod through hole. One end of the release rod is a release end with a smaller diameter. The outer shell is fixed to the buckle seat. An insertion groove is provided on the wall surface of the outer shell corresponding to the buckle seat notch position of the buckle seat. The buckle seat base plate is located inside the outer shell.The base plate of the buckle has a positioning ring groove on one end face for the positioning flange of the buckle to enter. The folding plate assembly is composed of several connecting plates, a fixing connecting plate, and a locking connecting plate. The connecting plates, the fixing connecting plate, and the locking connecting plate are stacked on top of each other and pivotally connected as a whole by a pivot element. One side of one end of the fixing connecting plate has a lock cylinder fixing groove, and the other side of the fixing connecting plate has a keyhole that communicates with the lock cylinder fixing groove. One end of the fixing connecting plate passes through the outer tube notch of the outer tube and is fixed to the cover and the reinforcing plate. The fixing part of the lock cylinder is located in the lock cylinder fixing groove of the fixing connecting plate. One end of the locking connecting plate is for insertion into the insertion groove of the outer shell and the buckle notch of the buckle. One end of the locking connecting plate has an insertion hole and a beveled surface. The insertion hole is for the brake lever to be inserted.

2. The folding lock structure as described in claim 1, characterized in that, The lock cylinder has a sliding groove on its fixed part, and a key hole is provided in the sliding groove. Two dust covers and two return springs are provided in the sliding groove of the lock cylinder. The opposite inner sides of the two dust covers are beveled, and the two return springs are respectively provided on the opposite outer sides of the two dust covers and abut against the two dust covers.

3. The folding lock structure as described in claim 1, characterized in that, The wall of the buckle is provided with a spring groove that connects to the recess, and a push spring is provided in the spring groove.

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