Bicycle lock structure

Abstract

The invention provides a bicycle lock structure. The bicycle lock structure comprises an output shaft, a locking claw, a claw seat, a shifting piece, a transmission shaft and a driving device. The claw seat is sleeved on the transmission shaft and can move along the length direction of the transmission shaft; a groove structure is arranged on the inner side of the output shaft; a locking claw is arranged on the claw seat and can be meshed with the groove structure; the driving device is directly or indirectly connected with the shifting piece; the shifting piece is in contact with the claw seat; when the locking claw is matched with the groove structure, the bicycle lock structure is in an unlocked state; when the driving device drives the shifting piece, the shifting piece drives the claw seat, so that the locking claw leaves the output shaft, and the bicycle lock structure is in a locked state. When the locking device is in a locking state, the locking claw leaves the output shaft, so that a transmission link of the transmission shaft and the output shaft is disconnected to lock a vehicle, and by adopting the principle of locking the vehicle, no part interferes with wheels, so that damage torque cannot be generated to damage the vehicle even if the vehicle is rided violently after the vehicle is locked.

Description

Technical Field

[0001] The invention relates to the field of bicycles, and in particular to a bicycle lock structure. Background Art

[0002] At present, bicycles are convenient for travel and are an essential means of transportation for many families. Anti-theft has been an issue that has been given great attention since ancient times and is also a favorable guarantee for the safety of our property.

[0003] However, the existing bicycle lock structures generally lock the bicycle by utilizing the principle of interference between the lock body and the wheel. Although this solution can lock the bicycle, if the owner forgets that he has locked the bicycle and rides without unlocking it, it will cause violent riding, that is, the wheel will interfere with the lock body and may damage the wheel. Or when someone wants to deliberately damage the wheel, the wheel may be damaged by violent riding in the locked state.

[0004] Patent document CN220905182U discloses a rainproof bicycle lock, which relates to a bicycle lock, specifically comprising a bicycle lock and a waterproof device. The bicycle lock is a bicycle lock of existing structure, wherein a circle of protrusions is provided below the outer side of the keyhole of the bicycle lock, a circle of grooves is provided above the protrusions, and a waterproof device is provided in the groove; the waterproof device is composed of a fixed block and a rainproof cloth, wherein the fixed block is a circular protrusion with a notch, and its size is adapted to the size of the groove and can be inserted into the groove, and a rainproof cloth is glued above the fixed block, and the rainproof cloth is a pocket structure, and a connecting block is sewn at the lower edge thereof, and the connecting block is glued in the groove with a strong glue, and the size of the connecting block is the same as the size of the notch of the fixed block, and the shape is also the same. However, this scheme still uses the principle of interference between the lock body and the wheel to lock the bicycle, and the above-mentioned technical problems still exist. Summary of the invention

[0005] In view of the defects in the prior art, the object of the present invention is to provide a bicycle lock structure, including an output shaft, a stop claw, a claw seat, a paddle, a transmission shaft and a driving device;

[0006] The claw seat is sleeved on the transmission shaft and can move along the length direction of the transmission shaft;

[0007] The claw seat is provided with an inner tooth portion, the transmission shaft is provided with an outer tooth portion, and the inner tooth portion matches the outer tooth portion;

[0008] A groove structure is provided on the inner side of the output shaft; a stop claw is provided on the claw seat, and the stop claw can mesh with the groove structure;

[0009] The driving device is directly or indirectly connected to the paddle; the paddle is in contact with the claw seat;

[0010] When the locking claw matches the slot structure, the bicycle lock structure is in an unlocked state;

[0011] When in the unlocked state, the transmission chain of the bicycle is as follows: the transmission shaft rotates due to the external force, driving the claw seat engaged on the transmission shaft to rotate, and the claw seat drives the output shaft through the stop claw;

[0012] When the driving device drives the paddle, the paddle drives the claw seat so that the locking claw leaves the output shaft, and the bicycle lock structure is in a locked state;

[0013] When in the locked state, the locking claw leaves the output shaft, the transmission link between the transmission shaft and the output shaft is disconnected, and the transmission shaft cannot drive the output shaft to move.

[0014] Preferably, the driving device includes a motor, an 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 are meshed with each other, and when the output shaft of the motor rotates, the paddle can be driven to move forward and backward.

[0015] Preferably, it further comprises a bracket, and the driving device, the paddle, the stopping claw and the claw seat are all installed in the bracket.

[0016] Preferably, it further comprises a first bearing, wherein the first bearing is sleeved on the output shaft, and an outer ring of the first bearing is in contact with the bracket.

[0017] Preferably, it further comprises a second bearing, wherein the second bearing is sleeved on the transmission shaft, and an outer ring of the second bearing is in contact with the bracket.

[0018] Preferably, it further comprises a third bearing, wherein the third bearing is sleeved on the transmission shaft, and an outer ring of the third bearing is in contact with the output shaft.

[0019] Preferably, it also includes a first clip spring,

[0020] The bracket is provided with a retaining spring installation groove, the first retaining spring is located in the retaining spring installation groove, and the first retaining spring is located between the bracket and the first bearing.

[0021] Preferably, it further comprises a second retaining spring, wherein the second retaining spring is sleeved on the claw seat, and an end surface of the second retaining spring abuts against the paddle.

[0022] Preferably, the distance that the claw seat drives the stopping claw to move left and right is less than the chamfer width h.

[0023] Preferably, the groove structure on the inner side of the output shaft has a chamfer, and the chamfer can facilitate the locking claw to enter the groove structure and engage with the groove structure.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] 1. When the present invention is in the locked state, the locking claw leaves the output shaft, so that the transmission link between the transmission shaft and the output shaft is disconnected to achieve vehicle locking. By using this principle to lock the vehicle, since no parts will interfere with the wheels, even if the vehicle is ridden violently after locking, no destructive torque will be generated to cause damage to the vehicle.

[0026] 2. In order to avoid misalignment caused by the misalignment of the angles of the stop claw and the groove structure when switching from the locked state to the unlocked state, the present invention provides a chamfer at the groove structure. The chamfer can guide the stop claw by adjusting the angle of the stop claw, making it easier for the stop claw to enter the groove structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings:

[0028] Figure 1 It is a schematic diagram of the exploded view structure of the present invention;

[0029] Figure 2 It is a cross-sectional structural schematic diagram of the present invention;

[0030] Figure 3 It is a structural schematic diagram of the installation position of the present invention on a bicycle;

[0031] Figure 4 This is a schematic diagram of the chamfering of the output shaft groove structure;

[0032] Figure 5 It is a partial schematic diagram of the present invention in unlocked state;

[0033] Figure 6 It is a structural schematic diagram of the present invention in a locked state.

[0034] The figure shows:

[0035] DETAILED DESCRIPTION

[0036] The present invention is described in detail below in conjunction with specific embodiments. The following embodiments will help those skilled in the art to further understand the present invention, but are not intended to limit the present invention in any form. It should be noted that, for those of ordinary skill in the art, several changes and improvements can also be made without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0037] The present invention provides a bicycle lock structure, specifically a bicycle lock structure, such as Figure 3As shown in the figure, its installation position is the bottom bracket of the bicycle frame. Figure 1-2 As shown, the bicycle lock structure includes an output shaft 1, a locking claw 4, a claw seat 5, a paddle 6, a transmission shaft 7 and a driving device; the claw seat 5 is mounted on the transmission shaft 7 and can move along the length direction of the transmission shaft 7; specifically, an inner tooth portion is provided on the claw seat 5, and an outer tooth portion is provided on the transmission shaft 7. When the claw seat 5 is mounted on the transmission shaft 7, the inner tooth portion matches the outer tooth portion.

[0038] The output shaft 1 is provided with a groove structure on the inner side; the claw seat 5 is provided with a stop claw 4, and the stop claw 4 can mesh with the groove structure; the driving device is directly or indirectly connected to the paddle 6; the paddle 6 is in contact with the claw seat 5 and can drive the claw seat to move left and right. Specifically, Figure 2 As shown, the paddle 6 is in contact with the step structure 14 on the claw seat 5 by the side surface thereof abutting against the step structure 14;

[0039] 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, so when the claw seat 5 is driven by the output shaft 1 to rotate, the paddle 6 does not rotate together.

[0040] When the locking claw 4 matches the groove structure, the bicycle lock structure is in an unlocked state; when the driving device drives the paddle 6 and the paddle 6 drives the claw seat 5 so that the locking claw 4 leaves the output shaft 1, the bicycle lock structure is in a locked state.

[0041] In a preferred embodiment, Figure 2 As shown, the driving device includes a motor 8, an external thread is provided on the output shaft of the motor 8, and an internal thread is provided at one end of the paddle 6, and the internal thread is meshed with the external thread. When the output shaft of the motor 8 rotates, the paddle 6 can be driven to move forward and backward. The output shaft of the motor 8 and the paddle 6 can also be connected in the form of a screw nut structure. The transmission shaft 7 can be the BB shaft of the bicycle, that is, the present invention realizes the connection and disconnection of the BB shaft and the output shaft through the forward and reverse rotation of the motor 8, thereby achieving the effect of locking the bicycle. In another preferred embodiment, the driving device is an electromagnetic drive structure, and when the electromagnetic drive structure works, it can drive the paddle 6 to move forward and backward.

[0042] The bicycle lock structure further comprises a bracket 9 , in which the driving device, the paddle 6 , the locking claw 4 and the claw seat 5 are all installed.

[0043] The bicycle lock structure further comprises a first bearing 21 . The first bearing 21 is sleeved on the output shaft 1 , and an outer ring of the first bearing 21 is in contact with the bracket 9 .

[0044] The bicycle lock structure further comprises a second bearing 22 . The second bearing 22 is sleeved on the transmission shaft 7 , and an outer ring of the second bearing 22 is in contact with the bracket 9 .

[0045] The bicycle lock structure further comprises a third bearing 23 . The third bearing 23 is sleeved on the transmission shaft 7 , and the outer ring of the third bearing 23 is in contact with the output shaft 1 .

[0046] The bicycle lock structure further includes a first retaining spring 31 . The bracket 9 is provided with a retaining spring installation groove. The first retaining spring 31 is located in the retaining spring installation groove. The first retaining spring 31 is located between the bracket 9 and the first bearing 21 .

[0047] The bicycle lock structure further comprises a second clamping spring 32 , which is sleeved on the claw seat 5 , and an end surface of the second clamping spring 32 abuts against the paddle 6 .

[0048] In a preferred embodiment, the number of motor rotations is determined by the meshing depth of the stop claw and the claw seat. The thicker the stop claw is, the greater the meshing depth is, and the more turns the motor needs to rotate, and vice versa. The number of turns for disengagement and engagement is the same, but the directions are different.

[0049] The present invention uses a motor to connect and disconnect the transmission shaft and the output shaft to achieve vehicle locking. The motor 8 rotates to realize the rotation of the motor output shaft provided with an external thread, and the paddle sleeved on the motor output shaft converts the rotational motion of the motor output shaft into the linear motion of the paddle due to the thread structure. The paddle is fixed on the claw seat and can move the claw seat. When the bicycle needs to be locked, the micromotor 8 rotates forward to drive the paddle to move backward, and the paddle drives the claw seat to disengage the locking claw 4 from the output shaft 1, thereby disconnecting the connection between the transmission shaft 7 and the output shaft 1, making the bicycle unable to be ridden, and forced riding is equivalent to "empty pedaling"; when it is necessary to ride, the micromotor reverses to drive the paddle to move forward, so that the claw seat drives the locking claw 4 to engage with the output shaft, connecting the transmission shaft 7 and the output shaft 1, and the bicycle enters a rideable state. At this time, the overall transmission chain is: the transmission shaft 7 rotates due to external force, driving the claw seat 5 engaged on the transmission shaft 7 to rotate, and the claw seat 5 drives the output shaft 1 through the locking claw 4 to achieve the overall transmission effect.

[0050] Specifically, when the bicycle needs to enter a locked state, the micromotor 8 receives a signal and starts working. At this time, the motor rotates forward, and the motor output shaft with an external thread drives the paddle to move backward. Since the paddle is fixed on the claw seat, the paddle moves backward, pulling the locking claw away from the output shaft 1, thereby cutting off the connection between the transmission shaft and the output shaft, making the bicycle in a non-rideable state; when the bicycle needs to be ridden, the micromotor receives a signal and reverses, and the motor output shaft with an external thread drives the paddle to move forward. The paddle pushes the locking claw into the output shaft, so that the locking claw and the output shaft are in a meshing state, thereby connecting the transmission shaft and the output shaft, making the bicycle in a rideable state.

[0051] When the bicycle enters the riding state, the output shaft and the locking claw 4 enter the meshing state. At this time, in an ideal state, no matter which direction the locking claw is in, it needs to be completely embedded in the meshing groove without getting stuck. In order to achieve this effect, in a preferred embodiment, as Figure 4 As shown, the groove structure 10 on the inner side of the output shaft 1 has a chamfer 11, and the chamfer 11 is a curved surface structure. The chamfer 11 can facilitate the stop claw 4 to enter the groove structure 10 and mesh with the groove structure. Specifically, the output shaft groove structure plays a guiding role for the stop claw. The smoother the chamfer of the groove structure (that is, the larger the arc width h, the smoother the arc surface), the easier it is for the stop claw to enter the groove structure. In the extreme case where the contact path between the stop claw and the chamfer 11 is the longest, the movement trajectory of the stop claw is described as follows: Figure 4 As shown, the locking claw 4 is driven by the transmission chain of the motor output shaft-claw seat 5, and moves along the arc surface from the initial contact point 12 with the chamfer 11 to the top of the chamfer 13, and then as long as the user slightly pedals the bicycle pedal, that is, the transmission shaft rotates, the locking claw will be stuck in the groove structure 10. In a preferred example, the distance that the claw seat 5 drives the locking claw 4 to move left and right is less than the width h of the chamfer 11 (i.e., the arc surface structure).

[0052] Figure 5 The locking claw is in the meshing state with the output shaft when the bicycle is in the unlocked state. When the bicycle is in the unlocked state, the locking claw is in the groove of the output shaft, so that the power route of the transmission shaft-claw seat-locking claw-output shaft is connected, and the bicycle is in a rideable state.

[0053] Figure 6 It is the state of the pawl and the output shaft when the bicycle is locked. When the vehicle is locked, the micro motor will move the paddle backward, and the paddle will move the pawl seat and the pawl backward together. After reaching a certain distance, the pawl seat-pawl and the output shaft are in a disconnected state. At this time, the pawl is in a naturally open state. In a preferred example, its maximum outer diameter is smaller than the chamfer diameter of the output shaft slot. When the vehicle is unlocked, the pawl can slide into the groove along the chamfer of the output shaft slot, thereby unlocking the vehicle.

[0054] The present invention realizes the connection and disconnection between the stop claw on the claw seat and the output shaft through a motor, thereby realizing the bicycle locking function. No external lock is needed, the use of accessories is reduced, and the impact on the appearance of the vehicle is minimized. The present invention cleverly uses the connection between the transmission shaft and the output shaft to achieve vehicle locking. Violent riding after locking the vehicle will not produce destructive torque. In addition, the present invention also has the advantage of safety. Specifically, when the vehicle is riding, if the system locks the vehicle, the vehicle will not suddenly get stuck and cause an emergency stop, causing a safety accident. The present invention cleverly uses the method of cutting off the transmission route to achieve the purpose of locking the vehicle. When the vehicle self-locks, the claw seat with the stop claw is disconnected from the output shaft, the transmission shaft is in an idling state, and the power cannot be transmitted to the wheels, so that the vehicle gradually stops due to loss of power.

[0055] In the description of the present application, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0056] The above describes the specific embodiments of the present invention. It should be understood that the present invention is not limited to the above specific embodiments, and those skilled in the art can make various changes or modifications within the scope of the claims, which does not affect the essence of the present invention. In the absence of conflict, the embodiments of the present application and the features in the embodiments can be combined with each other arbitrarily.

Claims

1. A bicycle lock structure, characterized in that: It comprises an output shaft (1), a stop claw (4), a claw seat (5), a paddle (6), a transmission shaft (7) and a driving device; The claw seat (5) is sleeved on the transmission shaft (7) and is movable along the length direction of the transmission shaft (7); The claw seat (5) is provided with an inner tooth portion, and the transmission shaft (7) is provided with an outer tooth portion, and the inner tooth portion matches the outer tooth portion; A groove structure is provided on the inner side of the output shaft (1); a stop claw (4) is provided on the claw seat (5), and the stop claw (4) can mesh with the groove structure; 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 locking claw (4) matches the groove structure, the bicycle lock structure is in an unlocked state; When in an unlocked state, the transmission chain of the bicycle is as follows: the transmission shaft (7) rotates due to an external force, driving the claw seat (5) engaged on the transmission shaft (7) to rotate, and the claw seat (5) drives the output shaft (1) through the locking claw (4); When the driving device drives the paddle (6), the paddle (6) drives the claw seat (5), so that the locking claw (4) leaves the output shaft (1), and the bicycle lock structure is in a locked state; When in the locked state, the locking claw (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; The groove structure inside the output shaft (1) has a chamfer (11), and the chamfer (11) can facilitate the locking claw (4) to enter the groove structure and mesh with the groove structure.

2. The bicycle lock structure according to claim 1, characterized in that: The driving device comprises a motor (8), an output shaft of the motor (8) is provided with an external thread, one end of the paddle (6) is provided with an internal thread, the internal thread and the external thread are meshed with each other, and when the output shaft of the motor (8) rotates, the paddle (6) can be driven to move forward and backward.

3. The bicycle lock structure according to claim 1, characterized in that: It also comprises a bracket (9), wherein the driving device, the paddle (6), the stop claw (4) and the claw seat (5) are all installed in the bracket (9).

4. The bicycle lock structure according to claim 3, characterized in that: It also comprises a first bearing (21), wherein the first bearing (21) is sleeved 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 sleeved on the transmission 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 comprises a third bearing (23), wherein the third bearing (23) is sleeved 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 a first retaining spring (31), A retaining spring installation groove is provided on the bracket (9), the first retaining spring (31) is located in the retaining spring installation groove, and the first retaining spring (31) is located between the bracket (9) and the first bearing (21).

8. The bicycle lock structure according to claim 1, characterized in that: It also includes a second clamping spring (32), which is sleeved on the claw seat (5), and the end surface of the second clamping spring (32) abuts against the paddle (6).

9. The bicycle lock structure according to claim 1, characterized in that: The distance that the claw seat (5) drives the stop claw (4) to move left and right is less than the width h of the chamfer (11).

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