TW202346694A - Bicycle lock mainly provided with a horseshoe lock and a steel cable - Google Patents

Abstract

The present invention aims to provide a bicycle lock ,which is mainly provided with a horseshoe lock and a steel cable. The horseshoe lock is provided with a base. The base is provided with a lock seat. A lock core, a torsion spring, a rotating seat and a buckling member are arranged in the lock seat. The rotating seat is assembled on a rotating shaft of the lock core. The torsion spring is disposed between the lock core and the rotating seat. The buckling member is disposed in the buckling member receiving groove of the lock seat. A first return spring is provided in a notch outside the buckling member receiving groove. A second return spring is provided in a groove at the bottom of the buckling member receiving groove. A housing is fixed on the base, and a cover is provided on the housing to cover the lock seat. An accommodating groove of the housing is provided with a lock bolt, a tension spring, a first compression spring and an abutting member. The tension spring and the first compression spring are arranged between the lock bolt and the abutting member. The abutting member is located on an inner wall surface of the lock seat. A second compression spring is located in a spring receiving groove of the lock seat. One end of the steel cable is provided with a locking rod. The locking rod is inserted into an insertion hole of the housing and the spring receiving groove of the lock seat. The buckling member is pushed by the rotation of the rotating seat to move stably in the buckling member receiving groove of the lock seat, and is further buckled and inserted into the locking rod of the steel lock in the lock seat.

Description

bicycle lock

The present invention relates to a bicycle lock, in particular to a steel cable that can be directly and stably locked on a horse hoof lock without the need for an additional padlock.

Press, generally used to prevent bicycles from being stolen. Most people install locks on bicycles. Bicycle locks (horseshoe locks, also known as ring locks) that are used to lock on the wheels of bicycles to prevent them from rotating are commonly known. The horseshoe lock is fixed on the frame of the bicycle. When you want to lock it, the C-shaped locking bolt of the horseshoe lock is set on the wheel of the bicycle to complete the locking action. However, the conventional horseshoe lock can only be locked on the bicycle. On the wheel frame, the bicycle cannot be connected to other fixed objects (such as pillars, railings, etc.), so it is necessary to prepare a separate steel cable and padlock that can be wrapped around the fixed objects and the bicycle frame to connect the bicycle to the fixed objects. To prevent the bicycle from being directly carried away by thieves, it is customary to use two locks at the same time to prevent bicycle theft, which is time-consuming and troublesome to use when locking and unlocking.

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

The bicycle lock of the present invention is mainly provided with a horseshoe lock and a steel cable. The horseshoe lock is provided with a base. One end of the base is provided with a lock base. The lock base is provided with a chamber. The top of the chamber is provided with a There is a positioning groove, the side wall of the lock seat is provided with a spring receiving groove, the other side wall of the lock seat is provided with a through hole connected to the holding chamber, and a shell is fixed on the base, and the shell There is a receiving groove inside, and a chute is provided on the outer wall of the shell. A fixed rod and a positioning rod are provided in the receiving groove of the shell. One end of the shell is provided with a cover for the lock seat. Cover, the cover is provided with a lock core perforation corresponding to the position of the lock seat, the side wall of the cover is provided with a plug hole corresponding to the position of the spring receiving groove of the lock seat, and a lock core is provided with The lock core has a perforation in the lock seat and penetrates through the shell. The lock core is provided with a key insertion hole on the outer end surface. The lock core is protrudingly provided with a rotating shaft. The rotating shaft is provided with a pin hole. The lock core is provided with a key hole. A positioning protrusion is provided on the side wall, and the positioning protrusion is located in the positioning groove of the lock seat. The inner wall of the lock core is provided with an embedding hole, and a rotating base is assembled on the rotating shaft of the lock core. The rotating base is provided with a shaft hole for the rotating shaft to be inserted into. The rotating base is provided with an embedded hole. A torsion spring is arranged between the lock core and the rotating base. One end of the torsion spring is embedded in the rotating base. The other end of the torsion spring is embedded in the embedding hole of the lock core. The other end of the torsion spring is embedded in the embedding hole of the swivel base. The lock groove is provided with a push handle on the outer wall of the lock bolt. The push handle protrudes from the chute of the housing. The inner end of the lock bolt is provided with a through hole. A tension spring is assembled on the lock. Bolt, one end of the tension spring is set in the through hole of the lock bolt, the other end of the tension spring is set on the fixed rod of the housing, and a resisting member is set in the housing. In the groove and located on the inner wall of the lock seat, one end of the resisting member is provided with an embedded groove, the resisting member is provided with a guide chute, and the positioning rod of the housing is passed through the resisting member In the guide chute, a first compression spring is installed in the receiving groove of the housing. One end of the first compression spring is sleeved on the fixed rod of the housing, and the other end of the first compression spring is installed on the fixed rod of the housing. In the embedded groove of the resisting member, a second compression spring is located in the spring groove of the lock base, and one end of the steel cable is provided with a locking rod, which is inserted into the housing. In the insertion hole and the spring groove of the lock base, the lock rod is provided with a ring groove, and the other end of the steel cable is provided with a thru-ring; It is characterized in that: the spring receptacle of the lock seat is connected with the holding chamber by a snapper receptacle, and the wall surface of the swivel base is provided with a steel ball receptacle, a first groove and a second recess. groove, the second groove is provided with a positioning groove, the positioning groove is connected to the shaft hole of the swivel base, and a positioning pin is passed through the positioning groove and inserted into the rotating shaft of the lock core In the pin hole, a locking steel ball is arranged in the steel ball groove of the swivel seat and the through hole of the lock seat. A buckle is installed in the buckle groove of the lock seat. The buckle part A resisting portion is convexly provided on one side, and the resisting portion is arranged in the first groove of the swivel base. The other side of the buckle is provided with an arc concave surface corresponding to the spring groove.

In the bicycle lock of the present invention, one end of the buckle is extended with a positioning guide piece, one side of the buckle is provided with a positioning protrusion, and the outside of the buckle groove of the lock seat is provided with a positioning guide for the buckle. The positioning guide piece of the piece is provided with a slot, and a first return spring is provided in the slot. The first return spring also pushes against the positioning guide piece of the buckle piece. There is a slot at the bottom of the buckle piece for the clamping piece. The positioning protrusion of the fastener is provided with a groove, and a second return spring is provided in the groove. The second return spring also pushes against the positioning protrusion of the fastener.

The advantage of the bicycle lock of the present invention is that the steel cable can be directly and firmly locked on the lock seat of the horseshoe lock, without the need to prepare an additional padlock, which can save the cost of purchasing a padlock, and the lock is extremely convenient and fast, and can achieve the best results. Excellent anti-theft effect.

Regarding the technical means adopted by the present invention to achieve the above-mentioned purposes and effects, the best and feasible embodiments are listed below and are shown in the drawings. The details are as follows:

The embodiment of the present invention is shown in the first to fifth figures. It is mainly provided with a horseshoe lock 1 and a steel cable 2 (as shown in the first figure). The horseshoe lock 1 is provided with a base 10 (as shown in the second figure). (shown), the base 10 is C-shaped, and a lock seat 100 is provided on one end of the base 10. The lock seat 100 is provided with a chamber 101, and a positioning slot 102 is provided on the top of the chamber 101. A spring receiving groove 103 is provided on the side wall of the lock seat 100. A fastener receiving groove 104 is connected between the spring receiving groove 103 and the chamber 101. All grooves are provided on the outside of the fastening part receiving groove 104. 105. The bottom of the fastener receptacle 104 is provided with a groove 106. The other side wall of the lock base 100 is provided with a through hole 107 connected to the receptacle 101. A shell 11 is fixed on the base 10. The housing 11 is also C-shaped corresponding to the base 10. The housing 11 is provided with a receiving groove 110. A chute 111 is provided on the front section of the outer wall surface of the housing 11. The housing 11 accommodates A fixed rod 112 and a positioning rod 113 are provided in the groove 110. One end of the housing 11 is provided with a cover 114 covering the lock seat 100. The cover 114 corresponds to the chamber 101 of the lock seat 100. A lock core through hole 115 is provided at the position, and a plug hole 116 is provided on the side wall of the cover 114 corresponding to the spring groove 103 of the lock seat 100. The shell 11 and the base 10 are fixed by a number of rivets 117. In one piece, a lock core 12 is installed in the chamber 101 of the lock seat 100 and penetrates through the lock core through hole 115 of the housing 11. A key insertion hole 120 is provided on the outer end of the lock core 12. The lock core 12 A rotating shaft 121 is protrudingly provided with a pin hole 122 on the rotating shaft 121. A positioning protrusion 123 is provided on the side wall of the lock core 12. The positioning protrusion 123 is located in the positioning groove 102 of the lock seat 100. The inner wall of the lock core 12 is provided with an embedded hole 124. A rotating base 13 is assembled on the rotating shaft 121 of the lock core 12 and is located in the chamber 101 of the lock base 100. The rotating base 13 is provided with There is a shaft hole 130 for the rotating shaft 121 to be inserted into. The wall surface of the rotating base 13 is provided with a steel ball receiving groove 131 (as shown in the third figure), a first groove 132 and a second groove 133. A positioning slot 134 is provided in the second groove 133 . The positioning slot 134 is connected to the shaft hole 130 . A positioning pin 135 is passed through the positioning slot 134 and inserted into the pin of the rotating shaft 121 . In the hole 122, the swivel base 13 is provided with an embedded hole 136, a locking steel ball 137 is disposed in the steel ball groove 131 of the swivel base 13 and the through hole 107 of the lock seat 100, and a torsion spring 14 is disposed in the hole 122. Between the lock core 12 and the swivel base 13, one end of the torsion spring 14 is embedded in the embedding hole 124 of the lock core 12, and the other end of the torsion spring 14 is embedded in the embedding hole of the swivel base 13. 136, a buckle 15 is disposed in the buckle receptacle 104 of the lock base 100. A resisting portion 150 is protruding from one side of the buckling component 15, and the resisting portion 150 is disposed on the turn. In the first groove 132 of the seat 13, an arc concave surface 151 is provided on the other side of the buckle 15. The arc concave surface 151 corresponds to the spring groove 103 of the lock seat 100. One end of the buckle 15 extends There is a positioning guide 152, a positioning protrusion 153 is provided on one side of the buckle 15, and a first return spring 154 is disposed in the slot 105 outside the buckle accommodation groove 104 of the lock base 100 (as shown in the first As shown in Figure 5), the first return spring 154 pushes against the positioning guide 152 of the buckle 15, and a second return spring 155 is located in the groove 106 at the bottom of the buckle accommodation groove 104. The second return spring 155 pushes against the positioning protrusion 153 of the buckle 15. A lock bolt 16 is disposed in the receiving groove 110 of the housing 11. One end of the lock bolt 16 is provided with a lock groove 160. The outer wall of the lock bolt 16 is provided with a push handle 161, and the other end of the lock bolt 16 is provided with a through hole 162. A tension spring 17 is assembled on the lock bolt 16, and one end of the tension spring 17 is sleeved It is located in the through hole 162 of the lock bolt 16. The other end of the tension spring 17 is sleeved on the fixed rod 112 of the housing 11. A resisting member 18 is located in the receiving groove 110 of the housing 11. And located on the inner wall surface of the lock seat 100, one end of the resisting member 18 is provided with a slot 180, the resisting member 18 is provided with a guide chute 181, and the positioning rod 113 of the housing 11 is passed through In the guide chute 181, a first compression spring 191 is disposed in the receiving groove 110 of the housing 11. One end of the first compression spring 191 is sleeved on the fixing rod 112 of the housing 11. The other end of a compression spring 191 is located in the slot 180 of the resisting member 18, a second compression spring 192 is located in the spring groove 103 of the lock seat 100, and one end of the steel cable 2 is provided with a lock. The locking rod 20 (as shown in the first figure) is provided with a ring groove 200, and the other end of the steel cable 2 is provided with a through ring 21. The steel cable 2 can also be set as a chain. In this way, it is A bicycle lock structure.

When assembling the present invention, please refer to the first to fifth figures, first set the torsion spring 14 on the rotating shaft 121 of the lock core 12, and then set the rotating seat 13 on the rotating shaft 121 of the lock core 12, so that the torsion force One end of the spring 14 is embedded in the embedded hole 124 of the lock core 12 , the other end of the torsion spring 14 is embedded in the embedded hole 136 of the rotating base 13 , and the rotating shaft 121 is inserted into the shaft hole 130 of the rotating base 13 , and then insert the positioning pin 135 into the positioning slot 134 of the rotating base 13 and the pin hole 122 of the rotating shaft 121, assemble the rotating base 13, the torsion spring 14 and the lock core 12 into one body, and place the locking steel ball 137 into the steel ball groove 131 of the turntable 13, place the resisting portion 150 of the buckle 15 into the first groove 132 of the turntable 13, and set the second return spring 155 in the buckle. into the groove 106 at the bottom of the groove 104, and then place the swivel base 13, the torsion spring 14, the lock core 12, the locking steel ball 137 and the buckle 15 into the chamber 101 of the lock seat 100, and the locking steel ball 137 A part is also set in the through hole 107 of the lock base 100, and the buckle 15 is also set in the buckle slot 104 of the lock base 100 (as shown in the third, fourth and fifth figures). The positioning protrusion 153 at the bottom of 15 is located in the groove 106 and is pushed by the second return spring 155. In addition, the second compression spring 192 is placed in the spring groove 103 of the lock seat 100, outside the second compression spring 192 The end can be extended from the arc concave surface 151 of the buckle 15, and the buckle 15 is positioned inwardly, and then the first return spring 154 is set outside the buckle groove 104 of the lock seat 100. In the slot 105, the first return spring 154 is pushed against the positioning guide 152 of the buckle 15 (as shown in the fifth figure), and one end of the tension spring 17 is sleeved in the through hole 162 of the lock bolt 16. , put the lock bolt 16 and the tension spring 17 into the receiving groove 110 of the housing 11, set the other end of the tension spring 17 on the fixed rod 112 of the housing 11, and then put the first compression spring 191 One end of the first compression spring 191 is sleeved on the fixed rod 112 of the housing 11, and the resisting member 18 is located in the receiving groove 110 of the housing 11. The other end of the first compression spring 191 is located in the embedded groove 180 of the resisting member 18. Inside, the shell 11 is assembled on the base 10, and the cover 114 on the shell 11 is covered on the lock base 100. The shell 11 and the base 10 are then riveted with several rivets 117, and the resisting member The side wall surface of 18 holds the lock steel ball 137 into the lock seat 100 and positions it. In this way, the assembly of the horseshoe lock 1 can be completed.

When using the present invention, please refer to the fourth to seventh figures. The horseshoe lock 1 of the present invention is fixed on the frame of the bicycle. When you want to lock it, you only need to pull the push handle 161 on the horseshoe lock 1 to lock it. The lock bolt 16 is pushed out from the accommodation groove 110 at one end of the housing 11 , and the tension spring 17 is pulled by the lock bolt 16 into an elastically stretched state, and the outer end of the lock bolt 16 is inserted into the accommodation at the other end of the housing 11 In the groove 110, the lock bolt 16 pushes against the resisting member 18 and moves inward, and the resisting member 18 squeezes the first compression spring 191, so that the first compression spring 191 is in an elastic compression state, and waits for the lock bolt 16 to lock. When the groove 160 corresponds to the position of the locking steel ball 137 in the lock seat 100, the locking steel ball 137 can move outward and be embedded in the locking groove 160 of the lock bolt 16. At this time, the rotating seat 13 is supported by the torsion spring 14 Part of the elastic recovery and slight rotation (as shown in the sixth figure), the steel ball groove 131 of the swivel base 13 is separated from the position of the locking steel ball 137, and the wall surface of the swivel base 13 holds the locking steel ball 137 outwards , the locking steel ball 137 can lock the lock bolt 16 to form the first section of the horseshoe lock 1 lock, and the steel cable 2 is wound around the fixed object to be fixed on the bicycle (such as a pillar or a railing, etc.) on the horse shoe lock 1, insert the locking rod 20 into the through ring 21, and then insert the locking rod 20 into the insertion hole 116 of the housing 11 of the horseshoe lock 1 and the spring groove 103 of the lock seat 100. The rod 20 is inserted into the spring groove 103 and squeezes the second compression spring 192 in the lock seat 100 to be in an elastic compression state, and the second compression spring 192 no longer resists the buckle 15. At this time, the swivel base 13 is pressed again. The elastic restoring force of the torsion spring 14 drives the swivel base 13 to rotate again. The first groove 132 of the swivel base 13 is separated from the resisting portion 150 of the buckle 15 , and the outer wall of the swivel base 13 moves the buckle 15 The resisting portion 150 pushes outward (as shown in the seventh figure), and the buckle 15 moves toward the spring groove 103. Its positioning guide piece 152 and positioning protrusion 153 squeeze the first return spring 154 and The two return springs 155 are in an elastic compression state, and the arc concave surface 151 is clamped in the annular groove 200 of the locking rod 20 to lock and position the locking rod 20 of the steel cable 2 to form the second section of the steel cable 2 lock. In this way, the steel cable 2 of the present invention can be directly locked on the lock seat 100 of the horseshoe lock 1, without the need to prepare an additional padlock, which can save the cost of purchasing a padlock. The lock is extremely convenient and fast, and can achieve the best anti-theft effect of the lock. , and through the arrangement of the positioning guide piece 152, the positioning protrusion 153, the first return spring 154 and the second return spring 155 of the buckle 15, the buckle 15 can be placed in the buckle receptacle of the lock seat 100 The stable movement within 104 makes the locking of the horseshoe lock 1 to the steel cable 2 more stable.

When unlocking the lock of the present invention, the key only needs to be inserted into the key hole 120 of the lock core 12 and rotated, so that the rotating shaft 121 drives the rotating base 13 to rotate, so that the steel ball groove 131 of the rotating base 13 corresponds to the locking steel ball 137. A groove 132 corresponds to the buckle 15, and the locking steel ball 137 and the buckle 15 are no longer resisted by the wall of the swivel base 13 and can be retracted into the steel ball receiving groove 131 and the first groove 132 respectively, so that The locking steel ball 137 is no longer held in the locking groove 160 of the locking bolt 16. The locking bolt 16 is pulled back by the elastic recovery of the tension spring 17 and retracts into the receiving groove 110 of the housing 11, and the resisting member 18 It is no longer resisted by the lock bolt 16 and is pushed back to its original position by the elastic recovery of the first compression spring 191, and the lock steel ball 137 is blocked and positioned in the through hole 107 of the lock base 100 again. The buckle 15 is pushed and reset by the elastic recovery of the first return spring 154 and the second return spring 155 , so that the resisting portion 150 of the buckle 15 is reset and moved to be located in the first groove 132 of the turntable 13 again. , the arc concave surface 151 of the buckle 15 is reset and is no longer held in the annular groove 200 of the lock rod 20 of the steel cable 2, and the second compression spring 192 elastically returns to push the lock rod 20 outward, so that the lock The buckle rod 20 is separated from the horseshoe lock 1 (as shown in the fourth figure), and the outer end of the second compression spring 192 blocks and positions the buckle 15 in the buckle groove 104 again. In this way, it is completed. The unlocking action is very convenient to use.

To sum up, the present invention has indeed achieved the expected purpose and effect, and is more ideal and practical than the conventional ones. However, the above embodiments are only specific descriptions of the preferred embodiments of the present invention. This embodiment is not intended to limit the patentable scope of the present invention. All other equivalent changes and modifications made without departing from the technical means disclosed in the present invention should be included in the patentable scope of the present invention.

1: Horseshoe lock 10: Base 100: Lock seat 101: Chamber 102: Positioning slot 103: Spring slot 104: Fastener slot 105: Cutting groove 106: Groove 107: Through hole 11: Shell 110: Accommodation slot 111:Chute 112:Fixing rod 113:Locating rod 114: cover 115: lock core perforation 116: plug hole 117: Rivet 12: Lock core 120: Key socket 121: Rotating shaft 122: Pin hole 123: Positioning convex body 124: embedded hole 13: swivel seat 130: shaft hole 131: Steel ball holding groove 132: First groove 133: Second groove 134: Positioning groove 135: Positioning pin 136: Embedding hole 137: Lock steel ball 14: Torsion spring 15: Fastener 150: Resisting part 151: Arc concave surface 152: Positioning guide 153: Positioning projection 154: First return spring 155: Second return spring 16: Lock bolt 160: Lock slot 161: Push handle 162: Perforation 17: Tension spring 18: Resistance piece 180: Embedding groove 181: Guide chute 191: First compression spring 192: Second compression spring 2: Steel cable 20: Locking rod 200: Ring groove 21: Put on the ring

The first figure is a three-dimensional exploded view of the horseshoe lock and the steel cable according to the embodiment of the present invention. The second figure shows an exploded three-dimensional view of the horseshoe lock according to the embodiment of the present invention. The third figure is an enlarged three-dimensional view of part of the structure of the horseshoe lock according to the embodiment of the present invention. The fourth figure shows an assembled cross-sectional view of an embodiment of the present invention. The fifth figure is a side cross-sectional view of the lock base part according to the embodiment of the present invention. The sixth figure is a schematic diagram of the horseshoe lock locking according to the embodiment of the present invention. The seventh figure shows a schematic diagram of the horseshoe lock and the steel cable locking at the same time according to the embodiment of the present invention.

1: Horseshoe lock

10: Base

100:Lock seat

101:Room

102: Positioning slot

103:Spring slot

105: Grooving

107:Through hole

11: Shell

110: Accommodation tank

111:Chute

112:Fixed rod

113: Positioning rod

114:Cover

115: Lock center perforation

116:Plug hole

117:Rivets

12: Lock the heart

120:Key jack

121:Rotating axis

122: Pin hole

123: Positioning convex body

124:embedded hole

13:Transposition

130:Shaft hole

132: First groove

133: Second groove

135: Positioning pin

136:embedded hole

137:Lock steel ball

14: Torsion spring

15: fasteners

150: Resistance Department

151: Arc concave surface

152: Positioning guide

153: Positioning convex body

154:First return spring

155:Second return spring

16:Latch

160: Lock slot

161:Push handle

162:Perforation

17: Tension spring

18: Resistance piece

180: Groove

181:Guide chute

191:First compression spring

192: Second compression spring

Claims (2)

A bicycle lock is mainly provided with a horseshoe lock and a steel cable. The horseshoe lock is provided with a base. One end of the base is provided with a lock base. The lock base is provided with a chamber. The top of the chamber is provided with a positioning position. The side wall of the lock seat is provided with a spring receiving groove, the other side wall of the lock seat is provided with a through hole connected to the holding chamber, a shell is fixed on the base, and the shell has a There is a receiving groove, a chute is provided on the outer wall of the housing, a fixing rod and a positioning rod are provided in the receiving groove of the housing, and a cover is provided on one end of the housing for covering the lock seat , the cover is provided with a lock core perforation corresponding to the position of the lock seat, the side wall of the cover is provided with a plug hole corresponding to the position of the spring receiving groove of the lock seat, and a lock core is provided on the The lock core has a hole in the housing and is inserted into the lock seat. The outer end of the lock core is provided with a key insertion hole. The lock core is protrudingly provided with a rotating shaft. The rotating shaft is provided with a pin hole. The side wall of the lock core is There is a positioning protrusion on the lock core. The positioning protrusion is installed in the positioning groove of the lock seat. The inner wall of the lock core is provided with an embedding hole. A rotating base is assembled on the rotating shaft of the lock core. The base is provided with a shaft hole for the rotating shaft to be inserted into. The rotating base is provided with an embedded hole. A torsion spring is arranged between the lock core and the rotating base. One end of the torsion spring is embedded in the lock. The other end of the torsion spring is embedded in the embedded hole of the swivel base. A lock bolt is installed in the receiving groove of the housing. The outer end of the lock bolt is provided with a lock catch. groove, the outer wall of the lock bolt is provided with a push handle, the push handle protrudes from the chute of the housing, the inner end of the lock bolt is provided with a through hole, and a tension spring is assembled on the lock bolt , one end of the tension spring is set in the through hole of the lock bolt, the other end of the tension spring is set on the fixed rod of the housing, and a resisting member is set in the receiving groove of the housing And located on the inner wall of the lock seat, one end of the resisting member is provided with a slot, the resisting member is provided with a guide chute, and the positioning rod of the housing is passed through the guide of the resisting member. In the chute, a first compression spring is installed in the receiving groove of the housing. One end of the first compression spring is sleeved on the fixed rod of the housing, and the other end of the first compression spring is installed on the housing. In the slot of the resisting member, a second compression spring is arranged in the spring groove of the lock seat, and one end of the steel cable is provided with a locking rod, which is used for insertion into the shell. In the hole and the spring groove of the lock seat, the lock rod is provided with a ring groove, and the other end of the steel cable is provided with a threaded ring; It is characterized in that: the spring receptacle of the lock seat is connected with the holding chamber by a snapper receptacle, and the wall surface of the swivel base is provided with a steel ball receptacle, a first groove and a second recess. groove, the second groove is provided with a positioning groove, the positioning groove is connected to the shaft hole of the swivel base, and a positioning pin is passed through the positioning groove and inserted into the rotating shaft of the lock core In the pin hole, a locking steel ball is arranged in the steel ball groove of the swivel seat and the through hole of the lock seat. A buckle is installed in the buckle groove of the lock seat. The buckle part A resisting portion is convexly provided on one side, and the resisting portion is arranged in the first groove of the swivel base. The other side of the buckle is provided with an arc concave surface corresponding to the spring groove. The bicycle lock according to claim 1, wherein one end of the buckle is extended with a positioning guide piece, one side of the buckle is provided with a positioning protrusion, and the outside of the buckle groove of the lock base is provided with a A slot is provided for the positioning guide piece of the buckle. A first return spring is provided in the slot. The first return spring also pushes against the positioning guide piece of the buckle. The bottom of the buckle groove is provided with a first return spring. There is a groove for the positioning protrusion of the buckle part, and a second return spring is provided in the groove, and the second return spring pushes against the positioning protrusion of the buckle part.