Bicycle lock structure

Abstract

The utility model provides a bicycle lock structure which comprises a support and a transmission shaft, the transmission shaft penetrates through the support and is in running fit with the support, one end of the transmission shaft is provided with an output shaft, one end of the output shaft extends into the support, and the other end of the output shaft extends out of the support. A locking claw and a driving device are arranged in the support, the locking claw is fixedly connected with the transmission shaft in the circumferential direction, the transmission shaft allows the locking claw to move in the axial direction of the transmission shaft, a groove structure is arranged on the inner side of the output shaft, and the driving device drives the locking claw to get close to the groove structure in the axial direction of the transmission shaft and be meshed with the groove structure. The driving device drives the locking claw to be far away from the groove structure and separated from the groove structure in the axial direction of the transmission shaft 7. The locking claw, the driving device, the claw seat and the shifting piece are all integrated in the support, the support is a part of the bicycle body, on one hand, the support serves as an installation foundation of a transmission shaft, on the other hand, built-in hiding of the bicycle lock structure is achieved, and the integration degree of the bicycle lock and the bicycle is improved.

Description

Technical Field

[0001] This utility model relates to the field of bicycles, specifically to a bicycle lock structure. Background Technology

[0002] A bicycle lock is used to lock a bicycle. A typical bicycle lock is installed above the rear wheel of the bicycle. When people lock the lock, they can fix the rear wheel of the bicycle, thus locking the bicycle.

[0003] A Chinese patent application with publication number CN209585893U discloses a bicycle lock, including a lock body, a lock bar, a control module, a first photoelectric module, and a second photoelectric module. The lock body has a lock cavity with an opening on one side. The first photoelectric module and the second photoelectric module are respectively disposed on both sides of the opening of the lock cavity. The first photoelectric module and the second photoelectric module are used to send and receive optical signals. The first photoelectric module and the second photoelectric module are electrically connected to the control module. The lock bar can slide out or be stored in the lock body.

[0004] The existing bicycle lock described above is mounted at the wheel, and the locking lever acts on the wheel to lock it in place. This is an exposed lock structure. There is currently a great need in the market for a concealed bicycle lock. Utility Model Content

[0005] To address the shortcomings of existing technologies, the purpose of this utility model is to provide a bicycle lock structure, including a bracket and a drive shaft. The drive shaft passes through the bracket and rotatably engages with the bracket. One end of the drive shaft is provided with an output shaft, one end of which extends into the bracket, and the other end of which extends out of the bracket.

[0006] The bracket is equipped with a stop pawl and a drive device. The stop pawl is circumferentially fixed to the transmission shaft. The transmission shaft allows the stop pawl to move axially along the transmission shaft. The inner side of the output shaft is provided with a groove structure. The drive device drives the stop pawl to approach the groove structure along the axial direction of the transmission shaft and engage with the groove structure. Alternatively, the drive device drives the stop pawl to move away from the groove structure along the axial direction of the transmission shaft and separate from the groove structure.

[0007] Preferably, it also includes a claw base and a lever, both of which are disposed within the bracket;

[0008] The claw seat is mounted on the drive shaft and can move along the length of the drive shaft; the claw seat is provided with an internal toothed portion, and the drive shaft is provided with an external toothed portion, the internal toothed portion and the external toothed portion are matched;

[0009] The stop pawl is disposed on the pawl seat;

[0010] The drive device is directly or indirectly connected to the paddle; the paddle is in contact with the claw seat;

[0011] When the stop pawl matches the groove structure, the bicycle lock structure is in the unlocked state;

[0012] When in the unlocked state, the bicycle's drive chain is as follows: the drive shaft rotates due to external force, which drives the pawl seat meshed on the drive shaft to rotate, and the pawl seat drives the output shaft through the stop pawl;

[0013] When the drive device drives the paddle, and the paddle drives the pawl seat, causing the stop pawl to leave the output shaft, the bicycle lock structure is in a locked state.

[0014] When in the locked state, the stop pawl disengages from the output shaft, the transmission link between the drive shaft and the output shaft is disconnected, and the drive shaft cannot drive the output shaft to move.

[0015] Preferably, the driving device includes a motor, the output shaft of the motor is provided with an external thread, one end of the paddle is provided with an internal thread, the internal thread and the external thread mesh with each other, and when the output shaft of the motor rotates, it can drive the paddle to move back and forth.

[0016] Preferably, it also includes a first bearing, which is mounted on the output shaft, and the outer ring of the first bearing is in contact with the bracket.

[0017] Preferably, it also includes a second bearing, which is mounted on the drive shaft, and the outer ring of the second bearing is in contact with the bracket.

[0018] Preferably, it also includes a third bearing, which is mounted on the drive shaft and the outer ring of the third bearing is in contact with the output shaft.

[0019] Preferably, it further includes a first retaining ring, the bracket is provided with a retaining ring mounting groove, the first retaining ring is located in the retaining ring mounting groove, and the first retaining ring is located between the bracket and the first bearing.

[0020] Preferably, it further includes a second retaining ring, which is fitted onto the claw seat, and the end face of the second retaining ring abuts against the paddle.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] This utility model integrates the stop pawl, drive device, pawl seat and paddle into the bracket, which is part of the bicycle body. On the one hand, the bracket serves as the mounting base for the drive shaft, and on the other hand, it realizes the built-in concealment of the lock structure, which helps to improve the integration of the lock and the bicycle. Attached Figure Description

[0023] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0024] Figure 1 This is an exploded view of the structure of this utility model;

[0025] Figure 2 This is a cross-sectional view of the present invention.

[0026] Figure 3 This is a structural diagram showing the installation location of this utility model on a bicycle;

[0027] Figure 4 A schematic diagram of the chamfering of the output shaft groove structure;

[0028] Figure 5 This is a partial schematic diagram of the present invention in the unlocked state;

[0029] Figure 6 This is a schematic diagram of the structure of the present invention in the locked state.

[0030] The diagram shows:

[0031] Detailed Implementation

[0032] The present invention will now be described in detail with reference to specific embodiments. These embodiments will help those skilled in the art to further understand the present invention, but do not limit the present invention in any way. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all fall within the protection scope of the present invention.

[0033] This utility model provides a bicycle lock structure, specifically a bicycle lock structure, such as... Figure 3 As shown, its installation location is at the bottom bracket of the bicycle frame.

[0034] The bicycle lock structure includes a bracket 9 and a drive shaft 7, wherein the bracket is part of the bicycle body. The drive shaft 7 passes through the bracket 9 and is rotatably engaged with the bracket 9. One end of the drive shaft 7 is provided with an output shaft 1, one end of which extends into the bracket, and the other end of which extends out of the bracket. A stop pawl 4 and a drive device are provided inside the bracket 9. The stop pawl 4 is circumferentially fixedly connected to the drive shaft 7. The drive shaft 7 allows the stop pawl 4 to move axially along the drive shaft 7. A groove structure is provided on the inner side of the output shaft 1. The drive device drives the stop pawl 4 to approach the groove structure along the axial direction of the drive shaft 7 and engage with the groove structure, or the drive device drives the stop pawl 4 to move away from the groove structure along the axial direction of the drive shaft 7 and separate from the groove structure.

[0035] like Figure 1-2 As shown, specifically, the bicycle lock structure includes an output shaft 1, a stop pawl 4, a pawl seat 5, a paddle 6, a drive shaft 7, and a drive device; the pawl seat 5 is mounted on the drive shaft 7 and can move along the length of the drive shaft 7; specifically, the pawl seat 5 is provided with an internal tooth portion, and the drive shaft 7 is provided with an external tooth portion, and when the pawl seat 5 is mounted on the drive shaft 7, the internal tooth portion and the external tooth portion match.

[0036] The output shaft 1 has a groove structure on its inner side; the pawl seat 5 has a stop pawl 4, which can engage with the groove structure; the drive device is directly or indirectly connected to the paddle 6; the paddle 6 contacts the pawl seat 5 and can drive the pawl seat to move left and right, specifically, as shown in the example. Figure 2 As shown, the paddle 6 makes contact with the stepped structure 14 on the claw seat 5 by abutting its own side.

[0037] The inner ring of the paddle 6 does not contact the outer ring of the claw seat 5, or the inner ring of the paddle 6 contacts the outer ring of the claw seat 5, but the contact surface is particularly smooth. Therefore, when the claw seat 5 is driven to rotate by the output shaft 1, the paddle 6 will not rotate together.

[0038] When the stop pawl 4 matches the groove structure, the bicycle lock structure is in the unlocked state; when the drive device drives the paddle 6, the paddle 6 drives the pawl seat 5, causing the stop pawl 4 to leave the output shaft 1, the bicycle lock structure is in the locked state.

[0039] In a preferred example, such as Figure 2As shown, the driving device includes a motor 8, the output shaft of which has an external thread, and one end of the paddle 6 has an internal thread. The internal thread and the external thread mesh with each other. When the output shaft of the motor 8 rotates, it can drive the paddle 6 to move back and forth. The output shaft of the motor 8 and the paddle 6 can also be connected by a lead screw and nut structure. The transmission shaft 7 can be the bicycle's bottom bracket (BB) axle. That is, this invention uses the forward and reverse rotation of the motor 8 to switch the BB axle on and off with the output shaft, thereby achieving the locking effect. In another preferred embodiment, the driving device is an electromagnetic drive structure. When the electromagnetic drive structure is working, it can drive the paddle 6 to move back and forth.

[0040] The bicycle lock structure also includes a bracket 9, and the drive device, paddle 6, stop pawl 4, and pawl seat 5 are all installed in the bracket 9.

[0041] The bicycle lock structure further includes a first bearing 21, which is mounted on the output shaft 1, and the outer ring of the first bearing 21 is in contact with the bracket 9.

[0042] The bicycle lock structure further includes a second bearing 22, which is mounted on the drive shaft 7, and the outer ring of the second bearing 22 is in contact with the bracket 9.

[0043] The bicycle lock structure also includes a third bearing 23, which is mounted on the drive shaft 7, and the outer ring of the third bearing 23 is in contact with the output shaft 1.

[0044] The bicycle lock structure further includes a first retaining spring 31. The bracket 9 is provided with a retaining spring mounting groove. The first retaining spring 31 is located in the retaining spring mounting groove and is located between the bracket 9 and the first bearing 21.

[0045] The bicycle lock structure further includes a second retaining spring 32, which is fitted onto the claw seat 5, and the end face of the second retaining spring 32 abuts against the paddle 6.

[0046] In a preferred embodiment, the number of motor rotations is determined by the engagement depth between the stop pawl and the pawl seat. The thicker the stop pawl, the greater the engagement depth, and the more rotations the motor needs to make, and vice versa. Disengagement and engagement result in the same number of rotations, but in different directions.

[0047] This invention utilizes a motor to connect and disconnect the drive shaft and output shaft, thereby locking the vehicle. The rotation of the motor 8 causes the output shaft, which has an external thread, to rotate. A paddle fitted onto the motor output shaft, due to its threaded structure, converts the rotational motion of the motor output shaft into linear motion of the paddle. The paddle is then fixed to a pawl seat, enabling the pawl seat to move. When the bicycle needs to be locked, the micro motor 8 rotates forward, driving the paddle to move backward. The paddle then drives the pawl seat, causing the stop pawl 4 to disengage from the output shaft 1, thereby disconnecting the connection between the drive shaft 7 and the output shaft 1, making the bicycle unable to be ridden. Forcing the bicycle to ride is equivalent to "riding in the air." When riding is needed, the micro motor rotates in reverse, driving the paddle to move forward, causing the pawl seat to engage the stop pawl 4 with the output shaft, connecting the drive shaft 7 and the output shaft 1. The bicycle is then ready to be ridden. At this time, the overall transmission chain is as follows: the drive shaft 7 rotates due to external force, driving the pawl seat 5 engaged on the drive shaft 7 to rotate, and the pawl seat 5 drives the output shaft 1 through the stop pawl 4 to achieve the overall transmission effect.

[0048] Specifically, when the bicycle needs to be locked, the micro motor 8 receives a signal and starts working. At this time, the motor rotates forward, and the output shaft with external threads drives the paddle to move backward. Since the paddle is fixed on the pawl, the backward movement of the paddle pulls the stop pawl away from the output shaft 1, thereby cutting off the connection between the drive shaft and the output shaft, making the bicycle unrideable. When the bicycle needs to be ridden, the micro motor receives a signal and reverses direction. The output shaft with external threads drives the paddle to move forward. The paddle pushes the stop pawl into the output shaft, making the stop pawl and the output shaft engage, thereby connecting the drive shaft and the output shaft, making the bicycle rideable.

[0049] When the bicycle is in riding mode, the output shaft and the stop pawl 4 should engage. Ideally, the stop pawl should be fully engaged in the engagement groove regardless of its orientation, without getting stuck. To achieve this, in a preferred embodiment, such as... Figure 4 As shown, the groove structure 10 on the inner side of the output shaft 1 has a chamfer 11. The chamfer 11 is an arc surface structure, which facilitates the entry of the stop pawl 4 into the groove structure 10 and its engagement. Specifically, the output shaft groove structure guides the stop pawl. The smoother the chamfer of the groove structure (i.e., the larger the arc width h, the smoother the arc surface), the easier it is for the stop pawl to enter the groove structure. The movement trajectory of the stop pawl is described in the extreme case where the contact path between the stop pawl and the chamfer 11 is the longest. Figure 4As shown, the stop pawl 4 is driven by the transmission chain of the motor output shaft-pawl seat 5, moving from the initial contact point 12 with the chamfer 11 along the arc surface to the top tip 13 of the chamfer. Then, as long as the user slightly pedals the bicycle, the transmission shaft rotates, and the stop pawl will engage in the slot structure 10. In a preferred embodiment, the distance by which the pawl seat 5 drives the stop pawl 4 to move left and right is less than the width h of the chamfer 11 (i.e., the arc surface structure).

[0050] Figure 5 This refers to the engagement state of the stop pawl and the output shaft when the bicycle is in the unlocked state. When the bicycle is in the unlocked state, the stop pawl is in the groove of the output shaft, which connects the power path from the drive shaft to the pawl seat, the stop pawl, and the output shaft, and the bicycle is in a rideable state.

[0051] Figure 6 This describes the state of the stop pawl and output shaft when the bicycle is locked. When the bicycle is locked, the micro motor moves the paddle backward, and the paddle moves the pawl seat and the stop pawl backward together. After reaching a certain distance, the pawl seat-stop pawl and output shaft are disconnected. At this time, the stop pawl is in a naturally open state. In a preferred embodiment, its maximum outer diameter is smaller than the chamfer diameter of the output shaft groove. When the bicycle is unlocked, the stop pawl can slide into the groove along the chamfer of the output shaft groove, thereby unlocking the bicycle.

[0052] This invention uses a motor to connect and disconnect the stop pawl on the pawl holder from the output shaft, thus achieving a bicycle locking function. This eliminates the need for an external lock, reducing the number of accessories and minimizing the impact on the vehicle's appearance. The invention cleverly utilizes the connection between the drive shaft and the output shaft to lock the bicycle; even after locking, vigorous riding will not generate destructive torque. In addition, this invention offers safety advantages. Specifically, if the system locks the bicycle while riding, the bicycle will not suddenly stop due to a lock-up, preventing accidents. This invention cleverly uses the method of cutting off the transmission route to achieve the purpose of locking the bicycle. When the bicycle self-locks, the pawl holder, along with the stop pawl, disengages from the output shaft, the drive shaft spins freely, and power cannot be transmitted to the wheels, causing the bicycle to gradually stop due to loss of power.

[0053] In the description of this application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0054] The specific embodiments of this utility model have been described above. It should be understood that this utility model is not limited to the specific embodiments described above, and those skilled in the art can make various changes or modifications within the scope of the claims, which do not affect the substantive content of this utility model. Unless otherwise specified, the embodiments and features described in this application can be arbitrarily combined with each other.

Claims

1. A bicycle lock structure, characterized in that, Includes a bracket (9) and a drive shaft (7), the drive shaft (7) passes through the bracket (9) and rotates with the bracket (9), one end of the drive shaft (7) is provided with an output shaft (1), one end of the output shaft (1) extends into the bracket, and the other end of the output shaft (1) extends out of the bracket; The bracket (9) is provided with a stop pawl (4) and a driving device. The stop pawl (4) is circumferentially fixedly connected to the transmission shaft (7). The transmission shaft (7) allows the stop pawl (4) to move along the axial direction of the transmission shaft (7). The output shaft (1) is provided with a groove structure on its inner side. The driving device drives the stop pawl (4) to approach the groove structure along the axial direction of the transmission shaft (7) and engage with the groove structure; or, the driving device drives the stop pawl (4) to move away from the groove structure along the axial direction of the transmission shaft (7) and separate from the groove structure.

2. The bicycle lock structure according to claim 1, characterized in that, It also includes a claw seat (5) and a paddle (6), both of which are disposed within the bracket (9); The claw seat (5) is mounted on the transmission shaft (7) and can move along the length direction of the transmission shaft (7); the claw seat (5) is provided with an internal toothed portion, and the transmission shaft (7) is provided with an external toothed portion, and the internal toothed portion and the external toothed portion are matched. The stop pawl (4) is disposed on the pawl seat (5); The driving device is directly or indirectly connected to the paddle (6); the paddle (6) is in contact with the claw seat (5); When the stop pawl (4) matches the groove structure, the bicycle lock structure is in the unlocked state; When in the unlocked state, the bicycle's transmission chain is as follows: the transmission shaft (7) rotates due to external force, which drives the pawl seat (5) meshing on the transmission shaft (7) to rotate, and the pawl seat (5) drives the output shaft (1) through the stop pawl (4); When the drive device drives the paddle (6), the paddle (6) drives the pawl seat (5), causing the stop pawl (4) to leave the output shaft (1), the bicycle lock structure is in a locked state. When in the locked state, the stop pawl (4) leaves the output shaft (1), the transmission link between the transmission shaft (7) and the output shaft (1) is disconnected, and the transmission shaft (7) cannot drive the output shaft (1) to move.

3. The bicycle lock structure according to claim 2, characterized in that, The driving device includes a motor (8), the output shaft of the motor (8) is provided with an external thread, and one end of the paddle (6) is provided with an internal thread. The internal thread and the external thread mesh with each other. When the output shaft of the motor (8) rotates, it can drive the paddle (6) to move back and forth.

4. The bicycle lock structure according to claim 3, characterized in that, It also includes a first bearing (21), which is mounted on the output shaft (1), and the outer ring of the first bearing (21) is in contact with the bracket (9).

5. The bicycle lock structure according to claim 3, characterized in that, It also includes a second bearing (22), which is mounted on the drive shaft (7), and the outer ring of the second bearing (22) is in contact with the bracket (9).

6. The bicycle lock structure according to claim 3, characterized in that, It also includes a third bearing (23), which is mounted on the transmission shaft (7), and the outer ring of the third bearing (23) is in contact with the output shaft (1).

7. The bicycle lock structure according to claim 3, characterized in that, It also includes the first snap ring (31), The bracket (9) is provided with a retaining ring mounting groove, the first retaining ring (31) is located in the retaining ring mounting groove, and the first retaining ring (31) is located between the bracket (9) and the first bearing (21).

8. The bicycle lock structure according to claim 2, characterized in that, It also includes a second retaining ring (32), which is fitted onto the claw seat (5), and the end face of the second retaining ring (32) abuts against the paddle (6).

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