WO2002096744A1

WO2002096744A1 - A hidden bicycle lock

Info

Publication number: WO2002096744A1
Application number: PCT/CN2001/000878
Authority: WO
Inventors: Chi-Yuan Li
Original assignee: Wenzhou Shenglun Auto And Motorcycle Fittings Co., Ltd.
Priority date: 2001-05-29
Filing date: 2001-05-29
Publication date: 2002-12-05

Abstract

A bicycle antitheft lock mainly comprises a lock body fixed in a center shaft of a bicycle front fork, a lock core, a gearing mounted in the lock body and a crosspiece. There is a core hole at an upper wall of the lock body and a crosspiece hole at a bottom wall of the lock body so the lock core is mounted in the core hole. The center shaft and a sleeve of a frame member are provided a key hole and a crosspiece hole corresponding to a key hole of the lock core and the crosspiece hole of the lock body respectively. At one end of the gearing, it is connected to the lock core, at the other end, it is connected to the crosspiece. The crosspiece is seated in the crosspiece hole of the lock body and the crosspiece hole of the center shaft. Since the lock is hidden inside the bicycle, so it is good at theftproof function, keeping and difficult to be lost.

Description

Hidden bicycle lock The present invention belongs to the technical field of locks, and relates to bicycle locks, and particularly relates to a hidden bicycle lock.

Generally, there are two types of bicycle locks. One is a disc lock that is directly fixed to the rear wheel of the bicycle, and the other is a chain lock that can be used to fix the bicycle at will. Both types of locks are exposed on the outside of the vehicle. It is very easy for thieves to use tools The lock body is stolen, and the latter chain lock is not fixed on the car body. During use, it is often taken off the car body, which is not easy to store and is very easy to lose.

An object of the present invention is to provide a hidden bicycle lock, which has a good anti-theft function, is convenient to store, and is not easy to lose.

To achieve the above objective, the solution of the present invention is:

The hidden bicycle lock mainly includes a lock body, a lock core, a transmission device and a card body; the lock body is fixed in the central shaft of the bicycle front fork passing through the frame, and the lock body is provided with a lock core on the top wall. A hole is provided on the bottom wall; a lock center is placed in the lock center hole; the key hole of the front fork center shaft and the frame corresponding to the lock center and the lock hole of the lock body also form a key hole and a card hole; a transmission device The lock body is arranged, and the top end of the transmission device is connected to the lock core for transmission, and the end is connected to the card body for transmission; the card body is located on the lock hole of the lock body and the front fork central axis.

The first specific solution of the present invention is: the lock core is rotatable, the lock core cannot be rotated, the lock core is placed in the lock hole, and the lock core is fixed on the lock body; the transmission device is a card body, and the card The bead is arranged in the lock body, and the top end of the bead body is connected with the lock shell. The end of the bead body forms an arc groove. A spring is set between the bottom surface of the bead body and the bottom of the lock body. The card body is a steel ball, a steel ball It is placed in the arc-shaped groove and just on the locking hole of the lock body and the fork's central axis.

Wherein, the surface of the lock housing of the above lock core forms teeth; the transmission device further includes a rack, and the rack and the bead body are arranged in the lock body, the teeth on the rack precisely mesh with the teeth on the surface of the lock housing, and the ends of the rack and The tops of the card beads are fixedly connected together.

The lock body is provided with a positioning hole opposite the lock core hole. The inner end of the lock mandrel protrudes to form a positioning post, and the lock mandrel is fixed on the lock body through the positioning post inserted into the positioning hole.

An inserting post is formed at the end of the rack, and a jack is opened at the top of the card bead. The rack is fixedly inserted into the jack through the insert post to be connected with the card bead for transmission.

A slide groove is provided on the top wall of the lock body. The rack is placed in the lock body by the slide groove, and the outside of the rack is located on the slide groove.

The second specific solution of the present invention is: the lock core is placed in the lock core hole, and the bottom of the lock shaft is Forming a reversing gear; the transmission device is a bead body, the bead body is arranged in the lock body, and the top end of the bead body forms a gear meshing with the reversing gear of the lock shaft, and the end of the bead body forms an arc-shaped groove; the card The body is a steel ball, and the steel ball is placed in the arc-shaped M groove, and is just on the locking hole of the lock body and the central axis of the front fork.

A slot is formed on the inner wall of the end of the lock body corresponding to the bottom end of the bead body, and a spring is placed in the groove to limit the bead body in the lock body.

The third specific solution of the present invention is: the lock core is fixed in the lock core hole, and a pin is axially provided at the bottom end of the lock mandrel; the transmission device is a lock tongue, the lock tongue is provided in the lock body, and the lock tongue is A guide groove is provided corresponding to the pin, and the end of the lock tongue forms an arc-shaped push-pull surface; the card body is a steel ball, and the steel ball is placed on the arc-shaped push-pull surface and is located on the lock hole of the lock body and the front fork central axis.

An upper fixing hole is provided on the bottom end surface of the lock mandrel of the lock core, and a pin is fixedly inserted into the fixing hole.

The bottom end wall of the above lock core is symmetrically provided with two slots, and the lock body is provided with a through chute, and the lock body is provided with an assembly hole opposite the lock core hole; the lock tongue is inserted through the chute, and The two slots are inserted into the lock housing to ensure the accuracy of the axial movement of the lock bolt. The pins are inserted through the mounting holes and fixed to the bottom end of the lock mandrel and in the guide groove of the lock tongue.

The fourth specific solution of the present invention is: the lock core is rotatable, and the lock mandrel cannot be rotated; the lock core is placed in the lock hole; the lock mandrel is fixed on the lock body; the surface of the lock shell forms teeth; It is a gear. The gear meshes with the teeth on the surface of the lock shell, and the gear is fixed on the card body. The two ends of the card body are radially mounted on the socket and the card hole at the bottom of the lock body. The surface of the card body is provided with a spiral groove. One end of the screw is fixed to the bottom end of the lock body, and the other end abuts on the spiral groove of the card cylinder.

Wherein, the lock body has a positioning hole opposite the lock core hole, and the inner end of the lock mandrel protrudes to form a positioning post, and the lock mandrel is fixed to the lock body through the positioning post inserted into the positioning hole.

A small hole is formed at the bottom end of the lock body, and a screw tooth is inserted into the small hole and extends into the lock body. A clamping block is plugged in the small hole to prevent the screw tooth from falling out of the lock body.

The shaft hole of the gear is a hexagonal hole, a hexagonal necked section is formed on the card cylinder correspondingly, and the gear is fixed on the necked section of the card cylinder by means of a fixed spring.

With the above structure, the present invention has a better anti-theft function than the prior art, because the lock body is hidden inside the bicycle, and the thief cannot destroy the lock body with the tool without damaging the bicycle body. Since the lock body is fixedly installed inside the car, it is only necessary to carry the key, and it is not necessary to consider the storage of the lock body, which is convenient for storage and is not easy to lose.

The present invention will be further described in detail below with reference to the accompanying drawings and the preferred embodiments.

FIG. 1 is an exploded perspective view of a first preferred embodiment of the present invention;

2 is an external view of a combined state (unlocked state) according to a preferred embodiment of the present invention; 3 is a partially enlarged sectional view of FIG. 2;

4 is an external view (a locked state diagram) of a first embodiment of the present invention; FIG. 5 is a partially enlarged sectional view of FIG. 4;

6 is an exploded perspective view of the second preferred embodiment of the present invention;

FIG. 7 is a partially enlarged sectional view of the unlocked state of the second preferred embodiment of the present invention; FIG. 8 is a partially enlarged sectional view of the locked state of the second preferred embodiment of the present invention; FIG. 9 is a three-dimensional exploded view of the preferred embodiment of the present invention (1) ;

FIG. 10 is a three-dimensional exploded view (b) of the third preferred embodiment of the present invention;

FIG. 11 is a partially enlarged sectional view of the unlocked state of the third preferred embodiment of the present invention; FIG. 12 is a partially enlarged sectional view of the locked state of the third preferred embodiment of the present invention; and FIG. 13 is an exploded perspective view of the fourth preferred embodiment of the present invention. One) ;

14 is an exploded perspective view (b) of the fourth preferred embodiment of the present invention;

FIG. 15 is a partially enlarged sectional view of the fourth unlocked state of the preferred embodiment of the present invention; FIG. 16 is a partially enlarged sectional view of the fourth locked state of the preferred embodiment of the present invention; Example 1. The specific structure in this embodiment is shown in FIG. 1 and mainly includes a lock body 1, a lock core 2, a rack 31, and a bead body 32, a transmission device 3, a spring 5, a card body 4, and other components, among which:

The lock body 1 is fixed to the central shaft 9 of the bicycle fork through the frame 8 through two pins. A lock hole 11 is opened on the wall at the top of the lock body 1, and a positioning hole 12 is opposite the lock hole 1 1; a long chute 1 3 is also provided on the wall at the top of the lock body 1. Two lock holes 14 are also symmetrically formed on the wall of the lock body 1.

The lock core 2 is placed in the lock core hole 11. The lock housing 21 of the lock core 2 is rotatable, the lock spindle 22 is not rotatable, and the inner end of the lock spindle 22 protrudes to form a positioning post 23. The lock spindle 22 passes The positioning post 23 is inserted into the positioning hole 12 and fixed on the lock body 1, and the surface of the lock housing 21 forms teeth.

The front fork central shaft 9 and the frame 8 correspond to the key hole of the lock core 2 and the bead hole 14 of the lock body 1 each forming a key hole 91, 81 and two bead holes 92, 82, and the key hole 91, bead hole 92, and When the positions of the key hole 81 and the bead hole 82 are aligned, the handle fixed on the top end of the front fork central shaft 9 is inclined at an angle of 45 degrees.

The transmission device 3 is composed of a rack 31 and a bead body 32. The rack 31 is placed in the lock body 1 by a sliding groove 13 and the outside of the rack 31 is on the sliding groove 13. The teeth on the rack 31 mesh with the teeth on the surface of the lock housing 21, and the ends of the rack 31 form a plug.柱 311。 311. The bead body 32 (which may be circular, square, flat, or other shapes, which is circular in this embodiment) is disposed in the lock body 1. The top end of the bead body 32 is provided with a socket 321, and the rack 31 passes through the insert post 311. It is fixedly inserted into the insertion hole 321 and connected to the bead body 32 for transmission. The end of the bead body 32 forms a circular arc-shaped groove 322. A spring 5 is disposed between the bottom surface of the bead body 32 and the bottom of the lock body 1.

The two card bodies 4 (steel balls) are placed in the arc-shaped grooves 322 and are located exactly in the lock body 1 And two hook holes 14, 92 of the front fork central shaft 9.

When the embodiment is assembled, as shown in FIGS. 2 and 3, the lock core 1 is first placed in the lock hole 1 1 of the lock body 1, the lock spindle 22 is fixed on the lock body 1, and then the rack 31 is set. In the lock body 1, the teeth on the rack 31 are engaged with the teeth on the surface of the lock housing 21, and then the bead body 32 is placed in the lock body 1, so that the end of the rack 31 and the top end of the bead body 32 are fixedly connected to Together, at the same time, a spring 5 is fixed between the bottom surface of the bead body 32 and the bottom of the lock body 1, and then the lock body 1 assembled with the lock core 2, the rack 31, the bead body 32, and the spring 5 is fixed to the Inside the fork center shaft 9, the key hole 91 and the card hole 92 of the front fork center shaft 9 correspond to the key hole of the lock core 2 and the card hole 14 of the lock body 1, and the card body 4 is placed in an arc-shaped groove. 322 and the locking holes 14 and 92 of the lock body 1 and the front fork central shaft 9. Finally, the front fork central shaft 9 assembled with the lock body 1 and the card body 4 is inserted and fixed in the frame 8 so that the frame 8 The key hole 81 and the card hole 82 are located on the same circle as the key hole of the lock core 2 and the card hole 14 of the lock body 1. The entire combination of the lock body.

When this embodiment is used, in the unlocked state, as shown in FIGS. 2 and 3, the card body 4 is only in the arc groove 322 of the card bead body 32 and the card holes 14 and 92 of the lock body 1 and the front fork central shaft 9. , It is not in the clamping hole 82 of the frame 8, and the relative rotation between the front fork central shaft 9 and the frame 8 is possible without any positioning.

When you want to lock, first turn the front fork center shaft 9 so that the key hole 81 and the card hole 82 on the frame 8 are aligned with the key hole 91 and the card hole 92 of the front fork center shaft 9, respectively, and then pass the key through the vehicle in sequence. The keyholes of the frame 8, the front fork central shaft 9, and the lock core 2 are inserted into the lock core 1, and the key is rotated to drive the lock housing 21 to rotate accordingly. The teeth on the surface of the lock housing 21 mesh with the teeth on the rack 31 to transmit As the rack 31 moves downwards, pushing the bead body 32 also moves downward. The arc-shaped groove 322 at the end of the bead body 32 is gradually misaligned with the card hole 14 of the lock body 1, and the bead body 32 gradually moves the card body. 4 push out, so that the card body 4 is located on the lock body 1 and the front fork central axis 9, the card hole 1 4, 92, 82 of the frame 8, as shown in FIG. 5, between the front fork central axis 9 and the frame 8 Relative rotation cannot occur due to the positioning of the card body 4. When the key is pulled out, it is in a locked state. At this time, the handle fixed at the top of the front fork central shaft 9 is inclined at a 45-degree angle, which can facilitate parking of the bicycle, as shown in FIG. 4.

When you want to unlock again, directly pass the key through the keyholes of the frame 8, the front fork center shaft 9, and the lock core 2 in order, insert it into the lock core 2, and turn the key in the opposite direction to drive the lock housing 21 to rotate with it. As the teeth on the surface of the lock housing 21 mesh with the teeth on the rack 31, the rack 31 is driven to move upward, pushing the bead body 32 to move upward, and the arc-shaped HJ groove 322 at the end of the bead body 32 gradually comes into contact with the lock body 1 The card hole 14 is aligned, and the card body 4 falls into the arc groove 322 of the card bead body 32 again, and is located on the card holes I ⁴ and 92 of the lock body 1 and the front fork central axis 9 without being in the vehicle. In the locking hole 82 of the frame 8, as shown in FIG. 3, the card body 4 is no longer positioned between the front fork central shaft 9 and the frame 8 and can rotate relative to each other. When the key is pulled out, it is in an unlocked state. As shown in Figure 1.

Please refer to FIG. 6-8 for the second preferred embodiment of the present invention. The specific structure in this embodiment is shown in FIG. 6 and mainly includes components such as a lock body 1, a lock core 2, a transmission device (a bead body 3 ') and a card body 4, wherein:

The lock body 1 is fixed to the central shaft 9 of the bicycle fork through the frame 8 through two pins. A lock hole 11 is opened on the wall of the top of the lock body 1, two locking holes 14 are symmetrically opened on the wall of the lock body 1, and another groove 15 is provided on the inner wall of the end of the lock body 1. The spring 16 is placed in this groove 15.

The lock core 2 is placed in the lock core hole 1 1. The lock shell of the lock core 1 and the lock body 1 are integrally formed. The bottom of the lock mandrel protrudes to form a reversing gear 24.

The front fork central shaft 9 and the frame 8 are the same as those in the first embodiment. The key hole corresponding to the lock core 1 and the card hole 14 of the lock body 1 each form a key hole 91, 81 and two card holes 92, 82. When the positions of the hole 91, the card hole 92 and the key hole 81 are aligned, the handle fixed on the top end of the front fork central shaft 9 is inclined at an angle of 45 degrees.

The transmission device is a bead body 3, which is placed in the groove 15 by means of a snap spring 16 and is limitedly disposed in the lock body 1. The top end of the bead body 3 'is formed in phase with the reversing gear 24 of the lock core 1. The meshed gear 31, can cause the lock core 2 to drive the bead body 3 to rotate through the engagement of the reversing gear 24 and the gear 31, to form a circular arc-shaped groove 32 at the end.

The two card bodies 4 (steel balls) are placed in the arc-shaped groove 32, and are located on the two card holes 14, 92 of the lock body 1 and the front fork central axis 9, as shown in FIG.

When the embodiment is assembled, as shown in FIG. 7, the lock core 2 is first placed in the lock hole 11 of the lock body 1, and then the bead body 3 is placed in the lock body 1 to make the bead body 3 ′. The top gear 31 ′ meshes with the reversing gear 24 on the lock core 1, and fixes a snap spring 16 between the bottom end of the card body 3 ′ and the groove 15 of the inner wall of the lock body 1, so that the card body 3 The snap spring 16 is fixed in the lock body 1, and then the lock body 1 assembled with the lock core 2 and the bead body 3 is fixed in the front fork central shaft 9 by pins, so that the key hole 91 of the front fork central shaft 9 and The card hole 92 corresponds to the position of the key hole of the lock core 2 and the card hole 14 of the lock body 1, and the card body 4 is placed in the arc groove 32, and the card holes 14 and 92 of the lock body 1 and the front fork central shaft 9 Finally, finally, the front fork central shaft 9 assembled with the lock body 1 and the card body 4 is fixed in the frame 8 so that the key hole 81 and the card hole 82 on the frame 8 and the key hole of the lock core 1 are inserted and fixed. It is on the same circle as the locking hole 14 of the lock body 1, that is, the combination of the entire lock body is completed. The combined appearance is shown in FIG. 2.

When this embodiment is used, in the unlocked state, as shown in FIG. 7, the card body 4 is only in the arc groove 32 of the card bead body 3, and the lock holes 1 and 92 of the lock body 1 and the front fork central shaft 9. , It is not in the clamping hole 82 of the frame 8, and the relative rotation between the front fork central shaft 9 and the frame 8 is possible without any positioning.

When you want to lock, in the state of Fig. 7, first turn the front fork center shaft 9 so that the The key hole 81 and the card hole 82 are respectively aligned with the key hole 91 and the card hole 92 of the center axis 9 of the front fork, and then pass the key through the frame hole, the center axis of the front fork 9, and the key hole of the lock center 1, respectively. Insert it into the lock core 2 and turn the key to drive the lock core 2 to rotate with it. Through the meshing of the reversing gear 24 and the gear 3 Γ, the transmission to the bead body 3 'also rotates, the bead body 3, the arc-shaped groove at the end 32, gradually misaligned with the card hole 14 of the lock body 1, and the card bead body 3 'gradually pushes the card body 4 out, so that the card body 4 is located at the card hole 14 of the lock body 1 and the front fork central axis 9, and the frame 8. On 92, 82, the relative rotation between the front fork center axis 9 and the frame 8 cannot occur due to the positioning of the card body 4, the key is pulled out, and it is locked, as shown in FIG. 8, at this time, it is fixed at the center of the front fork The handle at the top of the shaft 9 is inclined at a 45-degree angle, as shown in FIG. 4, which facilitates parking of the bicycle.

When you want to unlock again, directly pass the key through the keyholes of the frame 8, the front fork center shaft 9, and the lock core 2 in sequence, insert it into the lock core 2, and turn the key in the opposite direction to drive the lock core 1 to rotate. The meshing of the reversing gear 24 and the gear 3 Γ is also rotated by the bead body 3 ′. The bead body 3 and the arc-shaped groove 32 at the end are gradually aligned with the card hole 14 of the lock body 1. 4 Fall back into the arc-shaped groove 32 ′ of the bead body 3 ′ and be located on the latch holes 14 and 92 of the lock body 1 and the front fork central shaft 9, but not in the latch holes 82 of the frame 8, such as As shown in FIG. 7, the card body 4 is no longer positioned between the front fork central shaft 9 and the frame 8 and can rotate relative to each other. When the key is pulled out, it is in an unlocked state, as shown in FIG. 2.

Please refer to FIG. 9- 12 again, which is the third preferred embodiment of the present invention. The specific structure in this embodiment is shown in Figs. 9 and 10, and mainly includes the lock body 1, the lock core 2, the transmission device (the lock tongue 3 "), and the card body 4 and other components, wherein:

The lock body 1 is fixed to the central shaft 9 of the bicycle fork through the frame 8 through two pins. A lock hole 11 is opened on the top wall of the lock body 1, an assembly hole 12 is opened opposite the lock hole 1 1, a through chute 1 3 ′ is opened on the lock body 1, and the bottom of the lock body 1 is opened. On the end wall, a mounting hole 12 is also opened below the mounting hole 12.

The lock core 2 is placed in the lock core hole 11, and an upper fixing hole 221 is provided on the bottom end surface of the lock shaft 22 of the lock core 2 so that the pin 25 is axially fixedly inserted into the fixing hole 221; There are ¾ slots 2 1 1 symmetrically formed on the bottom end wall of the shell 2 1.

The front fork central shaft 9 and the frame 8 correspond to the key hole of the lock core 2 and the card hole 14 of the lock body 1 to form a key hole 91, 81 and a card hole 92, 82, and the key hole 91, card hole 92, and key When the positions of the holes 81 and 82 are aligned, the handle fixed at the top end of the front fork central shaft 9 is inclined at an angle of 45 degrees.

The lock tongue 3 "is inserted into the lock body 1 by the slide groove 1 3 ', and is inserted into the two slots 2 1 1 of the lock housing 21, and a guide groove 31" is provided on the lock tongue 3 "corresponding to the pin 25 The pin 25 is inserted into the lock body 1 through the mounting hole 12 and fixed in the fixing hole 22 1 at the bottom end of the lock mandrel 22 in the guide groove 31 "of the lock tongue 3", and the end of the lock tongue 3 "is in the lock The bottom of the body 1 forms an arc-shaped push-push surface 32 "corresponding to the card hole 14. The card body 4 (steel ball) is placed on the arc-shaped push-and-pull surface 32 ", and is just on the card hole 14, 92 of the lock body 1 and the front fork central shaft 9.

When the embodiment is assembled, as shown in FIG. 11, the lock core 2 is first placed in the lock core hole 11 of the lock body 1, so that the two slots 2 1 1 of the lock housing 21 and the lock body 1 slide. The slots 1 3 'are connected, and the locking tongue 3 "is inserted into the lock body 1 from the sliding slot 1 3', and is inserted into the two slots 2 1 1 of the lock housing 21 to ensure that the locking tongue 3" is axial The accuracy of the movement, and put the pin 25 into the lock body 1 through the mounting hole 1 2 ′, and fixed in the fixing hole 22 1 at the bottom end of the lock mandrel 22, and the guide groove 31 "of the lock tongue 3" is exactly the same as the pin The sub-25 is matched. At this time, the arc-shaped push-and-pull surface 32 "of the lock tongue 3" is located on the side below the locking hole 14 of the lock body 1, and then the lock body 1 with the lock core 2 and the lock tongue 3 "assembled through the pin It is fixed in the front fork center shaft 9 so that the key hole 91 and the card hole 92 of the front fork center shaft 9 correspond to the positions of the key hole 2 and the key hole 14 of the lock body 1, and the card body 4 is placed in an arc The push-push surface 32 ″ and the locking holes 14 and 92 of the lock body 1 and the front fork central shaft 9. Finally, the front fork central shaft 9 assembled with the lock body 1 and the card body 4 is fixed in the frame 8 through Make the car The key hole 81 and the card hole 82 on the rack 8 are located on the same circle as the key hole of the lock core 2 and the card hole 14 of the lock body 1, and the combination of the entire lock body is completed, as shown in FIG. 1.

When this embodiment is used, in the unlocked state, as shown in FIG. 11, the card body 4 is only in the arc-shaped push-push surface 32 ″ of the lock tongue 3 ″ and the lock holes 14 and 92 of the lock body 1 and the front fork central shaft 9. It is not located in the clamping hole 82 of the frame 8. The front fork central shaft 9 and the frame 8 can rotate relative to each other without any positioning.

To lock, in the state of FIG. 11, first rotate the front fork central shaft 9 so that the key hole 81 and the locking hole 82 on the frame 8 are aligned with the key hole 91 and the locking hole 92 of the front fork center shaft 9, respectively. Then insert the key through the keyhole of the frame 8, the front fork center shaft 9, and the lock core 2 in sequence, insert it into the lock core 2, and turn the key to drive the lock spindle 22 to rotate with it through the pins at the bottom end of the lock spindle 22. When the sub-25 is matched with the guide groove 31 "of the lock tongue 3", the pin 25 pushes the lock tongue 3 "toward the bottom of the lock body 1 when the pin 25 rotates with the lock mandrel 11. The arc shape of the end of the lock tongue 3" The pushing surface 32 "is gradually located directly below the locking hole 14 of the lock body 1, and at the same time, the card body 4 is gradually pushed out, so that the card body 4 is located at the locking hole 14 of the lock body 1 and the front fork central axis 9 and the frame 8 As shown in FIG. 12, relative rotation between the front fork central shaft 9 and the frame 8 cannot occur due to the positioning of the card body 4. When the key is pulled out, it is in a locked state. At this time, it is fixed at the center of the front fork. The handle at the top of the shaft 9 is inclined at a 45-degree angle to facilitate parking of the bicycle, as shown in FIG. 4.

When you want to unlock again, in the state shown in Figure 12, directly pass the key through the keyhole of the frame 8, the front fork center shaft 9, and the lock core 1, and insert it into the lock core 1, and turn the key in the opposite direction to drive the lock core. The shaft 22 rotates with the pin 25 on the bottom end surface of the lock shaft 11 and the guide groove 31 "of the lock tongue 3", so that the pin 25 pushes the lock tongue 3 "toward the lock body when the lock shaft 22 rotates The top of 1 is moved axially, and the arc-shaped push-pushing surface 32 "at the end of the 3" tongue is gradually with The locking hole 14 of the lock body 1 is misaligned. At the same time, the locking body 4 again falls on the arc-shaped pushing surface 32 "of the locking tongue 3", and is located on the locking holes 14, 92 of the lock body 1 and the front fork central shaft 9. It is not in the clamping hole 82 of the frame 8. As shown in FIG. 11, the card body 4 is no longer positioned between the front fork central shaft 9 and the frame 8 and can be relatively rotated. When the key is pulled out, it is unlocked. , as shown in picture 2.

Please refer to FIGS. 13-16, which is the fourth preferred embodiment of the present invention. The specific structure in this embodiment is shown in Figs. 13 and 14, and mainly includes the lock body 1, the lock core 2, the transmission device (gear 7), the card body 4, and other components, wherein:

The lock body 1 is fixed in the central shaft 9 of the bicycle fork through the frame 8 through two pins, and a lock hole 11 is provided on the top, bottom and opposite walls of the lock body 1 respectively. A socket 141 and a locking hole 141; a positioning hole 12 is also opened opposite the lock core hole 11, a small hole 17 is opened at the bottom end of the lock body 1, and an assembly is opened on the side wall of the lock body 1. Hole 18.

The lock core 1 is placed in the lock core hole 11, the lock housing 21 of the lock core 1 can be rotated, the lock spindle 22 cannot be rotated, and the inner end of the lock spindle 22 protrudes to form a positioning post 23, and the lock spindle 22 is positioned by The post 23 is inserted into the positioning hole 12 and fixed to the lock body 1, and teeth are formed on the surface of the lock housing 21.

The front fork central shaft 9 and the frame 8 correspond to the key hole of the lock core 2 and the key hole 14 of the lock body 1 to form key holes 91, 81 and key holes 92, 82, and the key hole 91, key hole 92, and key hole 81, When the positions of the clamping holes 82 are aligned, the handle fixed at the top end of the front fork central shaft 9 is inclined at an angle of 45 degrees.

The gear 7 meshes with the teeth on the surface of the lock housing 21, and the shaft hole of the gear 3 is a hexagonal hole.

The two ends of the card body 4 'are respectively supported on the jack 141 and the card hole 14. A spiral groove 41 ′ is formed on the surface of the card body 4 ′, and a hexagonal necked section 42 is formed corresponding to the hexagonal shaft hole of the gear 7. The gear 7 is fixed on the necked section 42 by means of a snap spring 43. , On.

The screw 10 is fixedly inserted into the small hole 17 and extends into the lock body 1. A ^^ block (not shown) is inserted in the small hole 17 to fix the screw 10 and prevent the screw 10 from the lock body 1 The inner end of the screw tooth 10 abuts on the spiral groove 41, of the card body 4 '. ''

When the embodiment is assembled, as shown in FIG. 15, the gear 7 is first inserted into the lock body 1 through the mounting hole 18, and the card body 4 ′ is inserted into the lock body 1 through the card hole 14, so that the gear 7 is assisted by the card. The cooperation of the spring 43, the hexagonal shaft hole and the hexagonal necked section 42 is fixedly sleeved on the necked section 42 'of the card body 4', and at the same time, the two ends of the card body 4 'are respectively supported on The insertion hole 141 and the clamping hole 14, and then, the lock core 2 is placed in the lock core hole 11 of the lock body 1, the lock spindle 22 is fixed on the lock body 1, and the gear 7 and the teeth on the surface of the lock housing 21 Engage, and then insert the screw 10 into the small hole 17 by means of a clip, and the inner end of the screw 10 abuts on the spiral groove 41 'of the card body 4'. Then, the assembly is assembled The lock body 2, the gear 7, the card body 4, and the lock body 1 of the screw 10 are fixed in the front fork central shaft 9 by pins, so that the front fork central shaft 9 The key hole 91 and the card hole 92 correspond to the key hole of the lock core 2 and the key hole 13 of the lock body 1. Finally, the front fork central shaft 9 assembled with the lock body 1 is put through and fixed in the frame 8, The keyhole 81 and the card hole 82 on the frame 8 are located on the same circle as the keyhole 13 of the lock core 1 and the keyhole 13 of the lock body 1 to complete the combination of the entire lock body, as shown in FIG. 2.

When this embodiment is used, in the unlocked state, as shown in FIG. 15, the card body 4 is only in the card hole 14 of the lock body 1 and is not in the card hole 82 of the frame 8. The front fork central shaft 9 and the frame 8 There is no positioning between them and relative rotation can occur.

When locking, in the state of FIG. 15, first rotate the front fork central shaft 9 so that the key hole 81 and the locking hole 82 on the frame 8 are aligned with the key hole 91 and the locking hole 92 of the front fork center shaft 9 respectively, and then The key passes through the keyholes of the frame 8, the front fork center shaft 9, and the lock core 2 in order, and is inserted into the lock core 2. Turning the key causes the lock housing 21 to rotate with it, and the teeth on the surface of the lock housing 21 mesh with the gear 7, Driven by the rotation of the gear 7, the card body 4 also rotates. The card body 4 'moves axially due to the cooperation of the screw 10 and the spiral groove 41. The card body 4 gradually protrudes from the card hole 14 until it passes through. On the lock body 1, the front fork central axis 9, and the locking holes 14, 92, 82 of the frame 8, as shown in FIG. 16, the positioning between the front fork central axis 9 and the frame 8 cannot occur due to the positioning of the card body 4. With relative rotation, the key is pulled out, which means that it is in a locked state. At this time, the handle fixed at the top of the front fork central shaft 9 is inclined at a 45-degree angle, which can facilitate parking of the bicycle, as shown in FIG. 4.

When you want to unlock again, directly pass the key through the keyholes of the frame 8, front fork central shaft 9, and lock core 2 in order, insert it into the lock core 2, turn the key in the opposite direction, and drive the lock housing 21 to rotate with The teeth on the surface of the lock housing 21 mesh with the gear 7 and are driven by the gear 7 to rotate, which drives the card body 4 and also rotates. The card body 4 is axially moved due to the cooperation of the screw 10 and the spiral groove 41. Gradually shrink inward until it is again in the hole 14 of the lock body 1 and not in the hole 82 of the frame 8, as shown in FIG. 15, there is no longer a card between the front fork central shaft 9 and the frame 8 The body 4 is positioned and can rotate relative to each other. When the key is pulled out, it is in an unlocked state, as shown in FIG. 2.

In short, the key of the winter invention is: the key drives the lock core 2, and the lock core 2 is transmitted to the card body through a transmission device, so that the card body is locked between the lock body 1, the front fork center axis 9 and the frame 8, and the center of the front fork The shaft 9 cannot rotate, and the anti-theft function is achieved. The specific implementation structures of the lock core 2, the transmission device, and the card body may also be structures other than the four embodiments described herein, and are not enumerated here.

Claims

Rights request

1. A hidden bicycle lock, which is characterized by: mainly including a lock body, a lock core, a transmission device and a card body; the lock body is fixed in the central shaft of the bicycle front fork passing through the frame, and the lock body is at the top A lock center hole is provided on the wall, and a card hole is provided on the bottom wall; a lock center is placed in the lock center hole; the key hole of the center axis of the front fork and the frame corresponding to the lock center and the key hole of the lock body also form a key hole. And the card hole; the transmission device is arranged in the lock body, and the top end of the transmission device is connected with the lock core for transmission, and the end is connected with the card body for transmission; the card body is located on the card hole of the lock body and the front fork central axis.

2. The hidden bicycle lock according to claim 1, characterized in that: the lock core is a lock housing rotatable, the lock spindle cannot be rotated, the lock core is placed in the lock hole, and the lock spindle is fixed on the lock body The transmission device is a bead body. The bead body is set in the lock body, and the top end of the bead body is connected with the lock shell. The end of the bead body forms an arc groove. The bottom surface of the bead body and the bottom of the lock body are provided. A spring; the card body is a steel ball, and the steel ball is placed in the arc-shaped groove and is just on the card hole of the lock body and the central axis of the front fork.

3. The hidden bicycle lock according to claim 2, characterized in that: the surface of the lock housing of the lock core forms teeth; the transmission device further comprises a rack, the rack and the bead body are arranged in the lock body, on the rack The teeth of the lock mesh with the teeth on the surface of the lock shell, and the ends of the rack are fixedly connected with the top of the bead body.

4. The hidden bicycle lock according to claim 2 or 3, characterized in that: the lock body is provided with a positioning hole opposite the lock core hole, the inner end of the lock spindle protrudes to form a positioning post, and the lock spindle passes through the positioning post It is inserted into the positioning hole and fixed on the lock body.

5. The hidden bicycle lock according to claim 4, characterized in that: the end of the rack is formed with an insert post, and a jack is opened at the top of the card bead, and the rack is fixedly inserted into the jack through the insert post to communicate with the card bead. Connect the drive.

6. The hidden bicycle lock according to claim 5, characterized in that: a slide groove is further provided on the wall of the top end of the lock body, the rack is placed in the lock body by the slide groove, and the outside of the rack is on the slide groove.

7. The hidden bicycle lock according to claim 1, characterized in that: the lock core is placed in the lock core hole, and a reversing gear is formed at the bottom of the lock spindle; the transmission device is a bead body, and the bead body is provided on the lock In the body, the top of the bead body forms a gear that meshes with the reversing gear of the lock spindle, and the end of the bead body forms an arc-shaped groove; the card body is a steel ball, and the steel ball is placed in the arc-shaped groove and is just in the lock body And the fork hole on the central axis of the fork.

8. The hidden bicycle lock according to claim 7, characterized in that: a groove is formed on the inner wall of the end of the lock body corresponding to the bottom end of the bead body, and a snap spring is placed in the ω groove.

9. The hidden bicycle lock according to claim 1, wherein: the lock core is fixed A lock pin is provided in the lock hole and the bottom end of the lock mandrel is axially provided; the transmission device is a lock tongue; the lock tongue is arranged in the lock body; and a guide groove is provided on the lock tongue corresponding to the pin, and the end of the lock tongue is formed The arc-shaped push-pull surface; the card body is a steel ball, and the steel ball is placed on the arc-shaped push-pull surface and is exactly on the locking hole of the lock body and the central axis of the front fork.

10. The bicycle hidden lock according to claim 9, characterized in that: an upper fixing hole is opened on the bottom end surface of the lock core of the lock core, and the pin is fixedly inserted into the fixing hole.

11. The bicycle hidden lock according to claim 9 or 10, characterized in that: two slots are symmetrically formed on the bottom end wall of the lock housing of the lock core, and a through chute is provided on the lock body, and The lock body is provided with an assembly hole opposite the lock core hole; the lock tongue is inserted through the chute and is inserted into the two slots of the lock shell, and the pin is inserted through the installation hole and fixed to the bottom end of the lock spindle In the guide groove of the bolt.

12. The hidden bicycle lock according to claim 1, characterized in that: the lock core is rotatable, the lock spindle cannot be rotated, the lock core is placed in the lock hole, and the lock spindle is fixed on the lock body The surface of the lock shell forms teeth; the transmission device is a gear, the gear meshes with the teeth on the surface of the lock shell, and the gear is fixed on the card body; the two ends of the card body are radially mounted on the socket and the card hole at the bottom of the lock body. A spiral groove is formed on the surface of the body; one end of a screw tooth is fixed to the bottom end of the lock body, and the other end abuts the spiral groove of the card cylinder.

1. The hidden bicycle lock according to claim 12, characterized in that: the lock body is provided with a positioning hole opposite the lock core hole, the inner end of the lock spindle protrudes to form a positioning post, and the lock spindle is inserted through the positioning post. It is fixed in the lock body in the positioning hole.

14. The hidden lock for a bicycle according to claim 12 or 13, characterized in that: a small hole is formed at the bottom end of the lock body, a screw thread is inserted into the small hole, and the lock body is extended into the lock body, and a block plug In the hole.

15. The hidden bicycle lock according to claim 14, characterized in that: the shaft hole of the gear is a hexagonal hole, a hexagonal necked section is correspondingly formed on the card cylinder, and the gear is fixed on the sleeve by means of a snap spring. On the flaring section of the card cylinder.