Bicycle lock and bicycle equipped with bicycle lock

Abstract

To provide a bicycle lock capable of reducing noise of the bicycle lock when the bicycle is in motion.SOLUTION: A circle lock 30, which is provided on a frame 12 of an electrically assisted bicycle 10, is used to lock or unlock a rear wheel 13B of the electrically assisted bicycle 10. The circle lock 30 includes a horseshoe-shaped case 40 and an arc-shaped yoke 50 that is housed in the case 40 and can be extended from the case 40. The yoke 50 extends from the case 40, and the yoke 50 and the case 40 form a ring shape, which is passed between spokes of the rear wheel 13B to lock rotation of the rear wheel 13B. The yoke 50 is housed in the case 40 to unlock the rear wheel 13B, and a resin spring 60 is provided to urge the yoke 50 housed in the case 40 toward the case 40.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present disclosure relates to bicycle locks and bicycles equipped with bicycle locks. [Background technology]

[0002] There is a known circle lock that is attached to the body of a bicycle and that locks or unlocks the bicycle wheel (for example, see Patent Document 1). The circle lock has a horseshoe-shaped case and an arc-shaped bar that is housed in the case and can extend from the case.

[0003] A circle lock has a latch that extends from a case and passes between the spokes of the wheel, forming a ring with the latch and case to prevent the wheel from rotating, and the latch is placed back into the case to release the wheel and unlock the bicycle. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2012-225059 Summary of the Invention [Problem to be solved by the invention]

[0005] The circle locks mentioned above are sometimes designed with a large space inside the case for the latch to slide smoothly, which can cause the latch to vibrate and hit the case when riding over bumpy or rough roads, resulting in an unpleasant noise.

[0006] Therefore, an object of the present disclosure is to provide a bicycle lock that can reduce the noise made by the bicycle lock while the bicycle is in motion. [Means for solving the problem]

[0007] The bicycle lock disclosed herein is a bicycle lock that is attached to the body of a bicycle and that locks or unlocks the bicycle wheel, and is characterized in that it has a horseshoe-shaped case and an arc-shaped barb that is housed in the case and can be extended from the case, the barb extends from the case and is passed between the spokes of the wheel to form a ring with the barb and the case to lock the wheel from rotating, the barb is housed in the case to unlock the wheel, and the case is provided with an elastic member that urges the barb housed in the case toward the case. [Effects of the Invention]

[0008] The bicycle lock of the present disclosure can reduce the noise made by the bicycle lock while the bicycle is in motion. [Brief explanation of the drawings]

[0009] [Figure 1] 1 is a side view showing an electrically assisted bicycle as an example of an embodiment. [Figure 2] 1 is a perspective view of a circle lock as an example of an embodiment, as viewed from the front side. FIG. [Figure 3] 1 is a perspective view showing a circle lock as an example of an embodiment, as viewed from the rear side. FIG. [Figure 4] 1 is an exploded perspective view of a circle lock as an example of an embodiment, seen from the front side. FIG. [Figure 5] 1 is an exploded perspective view of a circle lock as an example of an embodiment, seen from the rear side. FIG. [Figure 6] 1 is a perspective view showing a resin spring as an example of an embodiment; [Figure 7] FIG. 10 is a perspective view showing a resin spring as another example of the embodiment. [Figure 8] 3 is a cross-sectional view taken along the line AA in FIG. 2. DETAILED DESCRIPTION OF THE INVENTION

[0010] An example of an embodiment of the present disclosure will be described in detail below. In the following description, specific shapes, materials, directions, numerical values, etc. are examples for facilitating understanding of the present disclosure, and can be appropriately changed according to the application, purpose, specifications, etc.

[0011] [bicycle] An electric power assisted bicycle 10 as an example of an embodiment will be described with reference to Figure 1. The following description will be given in accordance with the front-rear, left-right, and up-down directions of the electric power assisted bicycle 10.

[0012] The electrically assisted bicycle 10 is a bicycle that uses an electric motor to assist human power. However, the bicycle of the present disclosure is not limited to the electrically assisted bicycle 10 of this embodiment, and may be a normal bicycle or an electrically assisted bicycle that can be propelled by the electric motor alone. The electrically assisted bicycle 10 is equipped with a motor unit 21 that includes an electric motor. The electrically assisted bicycle 10 is equipped with a battery 22, and the electric motor is driven by power supplied from the battery 22. The electrically assisted bicycle 10 is also equipped with a circle lock 30 that serves as a bicycle lock, the details of which will be described later.

[0013] Like a typical bicycle, the electrically assisted bicycle 10 includes a frame 12 as a vehicle body, wheels (front wheel 13A and rear wheel 13B), handlebars 14, a saddle 15, crank arms 16, pedals 17, a chain 18, and a headlight 19. The crank arms 16 and the pedals 17 attached to one ends thereof are provided one on each side of the electrically assisted bicycle 10, and the other ends of the pair of crank arms 16 are connected to each other by a crank shaft.

[0014] The electrically assisted bicycle 10 includes a front sprocket that rotates with the rotation of the pedals 17, and a rear sprocket attached to the rear wheel 13B, with the front sprocket and rear sprocket connected via a chain 18. In this embodiment, the pedal force of the pedals 17 and the auxiliary power of the electric motor are transmitted to the rear wheel 13B via the chain 18. The motor unit 21 may be of a single-shaft type in which the rotational force of the electric motor is transmitted to the front sprocket via a reduction gear or the like, or may be of a two-shaft type in which the rotational force of the electric motor is transmitted via a reduction gear or the like to a sprocket for outputting auxiliary power, to which the chain 18 is attached.

[0015] The frame 12 is a framework that connects the front wheel 13A, rear wheel 13B, handlebars 14, saddle 15, etc. The frame 12 is made up of multiple pipes and supports a battery 22 and a motor unit 21. In this embodiment, the multiple pipes include a head pipe 12A, a front fork 12B, a down pipe 12C, a seat pipe 12D, a chain stay 12E, a seat stay 12F, and a bottom bracket. The bottom bracket is a pipe that connects the down pipe 12C, the seat pipe 12D, and the chain stay 12E.

[0016] The head pipe 12A supports the front forks 12B and handlebars 14 in a rotatable manner around the central axis of the pipe. The front forks 12B have a pair of legs that rotatably support the front wheel 13A, and a steering column that extends upward from the upper ends of the legs and is inserted into the cylinder of the head pipe 12A. The handlebars 14 are attached to the upper end of the steering column. The down pipe 12C is a pipe that connects the head pipe 12A and the seat pipe 12D. The seat pipe 12D is a pipe that supports the saddle 15.

[0017] The chain stays 12E are pipes connecting the seat stays 12F and the bottom bracket. They extend from the rear end of the bottom bracket toward the rear of the bicycle, with one on each side sandwiching the rear wheel 13B. Similarly to the chain stays 12E, the seat stays 12F are also provided, one on each side, sandwiching the rear wheel 13B. The left and right seat stays 12F extend from the top of the seat pipe 12D to the radial center of the rear wheel 13B and are connected one-to-one to the left and right chain stays 12E at this center. The rear wheel 13B is rotatably fixed to the rear end of the chain stay 12E. A circle lock 30, which will be described in detail later, is attached to the seat stay 12F as a bicycle lock.

[0018] [Circle Lock] The circle lock 30 will be described with reference to FIGS.

[0019] Below, the circle lock 30 may be described in terms of the front-to-rear, left-to-right, and up-and-down directions of the power-assisted bicycle 10. The rear side of the power-assisted bicycle 10, toward which the latch bolt 80 of the circle lock 30 (not shown) faces, may be referred to as the front side (surface side) of the circle lock 30, and the opposite side as the rear side (back side) of the circle lock 30. Furthermore, regarding the direction of movement of the yoke 50, the direction in which it is housed in the case 40 may be referred to as the housed side of the yoke 50, or the direction in which it extends from the case 40 may be referred to as the extending side of the yoke 50. The horseshoe-shaped case 40 or the arc-shaped yoke 50 may be described as an imaginary circle, with the inside and outside being used to refer to the circle. The direction along the arc of the arc-shaped yoke 50 may be referred to as the axial direction of the yoke 50.

[0020] The circle lock 30, which serves as a bicycle lock, is attached to the seat stay 12F of the frame 12 to lock or unlock the rear wheel 13B of the bicycle in order to prevent theft of the power-assisted bicycle 10. As will be described in more detail below, the circle lock 30 can reduce the noise made by the circle lock 30 while the power-assisted bicycle 10 is being ridden.

[0021] The circle lock 30 of this embodiment is provided on an electrically assisted bicycle 10, but is not limited to this. The bicycle lock of the present disclosure may also be provided on a normal bicycle or an electrically assisted bicycle that can be propelled by the electric motor alone. The circle lock 30 of this embodiment is configured to secure the rear wheel 13B of the electrically assisted bicycle 10, but is not limited to this. The bicycle lock of the present disclosure may also be configured to secure the front wheel 13A of the electrically assisted bicycle 10.

[0022] 1, the circle lock 30 is provided on the saddle 15 side of the seat stay 12F of the frame 12, and is positioned so as to straddle the rear wheel 13B. However, the bicycle lock (circle lock 30) of the present disclosure may also be provided on the carrier of the power-assisted bicycle 10 or on the mudguard of the rear wheel 13B, and be positioned so as to straddle the rear wheel 13B.

[0023] As shown in Figures 2 to 5, the circle lock 30 has a horseshoe-shaped case 40, each of which will be described in detail below, an arc-shaped latch 50 that is housed in the case 40 and can be extended from the case 40, a resin spring 60 that is provided inside the case 40 and serves as an elastic member that urges the latch 50 housed in the case 40 toward the case 40, and a latch bolt 80 that is urged toward the latch 50 and engages with a recess 51A of the latch 50 when the latch 50 is extended from the case 40.

[0024] The circle lock 30 fixes the rotation of the rear wheel 13B by extending the yoke 50 from the case 40 and passing it between the spokes of the rear wheel 13B to form a ring with the yoke 50 and the case 40. The circle lock 30 also stores the yoke 50 in the case 40 to release the fixation of the rear wheel 13B.

[0025] In the following, in the circle lock 30, the state in which the yoke 50 is completely housed in the case 40 may be described as the "unlocked state," and the position of the yoke 50 in the case 40 in the unlocked state may be described as the "unlocked position." Also, the state in which the yoke 50 is completely extended from the case 40 may be described as the "locked state," and the position of the yoke 50 in the case 40 in the locked state may be described as the "locked position."

[0026] [case] The case 40 accommodates the yoke 50. As described above, the case 40 is formed in a horseshoe shape with the opening facing downward. A yoke outlet 40A and a yoke inlet 40B are formed at both ends of the case 40. The yoke outlet 40A is formed by opening one end of the case 40. The yoke 50 extends from the yoke outlet 40A. The yoke inlet 40B is formed by opening the other end of the case 40. The yoke 50 extends from the yoke outlet 40A and is inserted into the yoke inlet 40B.

[0027] The case 40 has a die-cast case 41 with an opening on the rear side (back side) of the circle lock 30, a back plate 42 that covers the opening of the die-cast case 41, a pair of bases 43 for attaching the case 40 to the seat stay 12F of the frame 12, and a reinforcing member 44 that reinforces the latch outlet 40A, each of which will be described in detail below.

[0028] The die-cast case 41 is formed by die-casting a metal (for example, aluminum die-casting). On the back side of the die-cast case 41, there are formed a latch accommodating portion 41A for accommodating a latch 50, a guide hole 41B for guiding a pin 55 (described later) and a claw portion 54 of a safety button 53 (described later), an engagement portion 41C with which the claw portion 54 of a safety button 53 (described later) engages when the latch 50 is in the unlocked position, a pair of engagement holes 41D with which a pair of claw portions 63 of a resin spring 60 (described later) engage, and a latch bolt accommodating portion 41E with which the latch bolt 80 is accommodated, each of which will be described in detail later.

[0029] As described above, the yoke accommodating portion 41A accommodates the yoke 50. The yoke accommodating portion 41A is formed in an arc shape along the arc portion of the horseshoe-shaped die-cast case 41. The yoke 50 is accommodated in the yoke accommodating portion 41A so as to be movable to the extending side or the accommodating side.

[0030] As described above, the guide hole 41B is an opening that guides the pin 55 (described later) and the claw portion 54 of the safety button 53 (described later). The guide hole 41B is formed on the left side in the left-right direction when the circle lock 30 is viewed from the front, and communicates with the latch housing portion 41A.

[0031] As described above, the engagement portion 41C is an opening into which the claw portion 54 of the safety button 53 (described later) engages when the latch 50 is in the unlocked position. The engagement portion 41C is formed on the outer side of the guide hole 41B, continuing from the guide hole 41B, at the end of the guide hole 41B on the housing side.

[0032] As described above, the pair of engagement holes 41D are holes into which the pair of claw portions 63 of the resin spring 60, which will be described later, are respectively engaged. The pair of engagement holes 41D are formed in the center in the left-right direction at the upper end of the die-cast case 41.

[0033] As described above, the latch bolt accommodating portion 41E accommodates the latch bolt 80. The latch bolt accommodating portion 41E is formed in the vicinity of the latch inlet 40B of the case 40 so as to communicate with the latch accommodating portion 41A.

[0034] As described above, the back plate 42 closes the opening of the die-cast case 41. The back plate 42 is formed by bending a metal (for example, an aluminum alloy). A recess 42A is formed in the center of the upper part of the back plate 42 in the left-right direction. The recess 42A accommodates the resin spring 60, which will be described in detail later. This allows the resin spring 60 to be accommodated in the case 40 without changing the shape of the die-cast case 41. In other words, by forming the recess 42A in the back plate 42, whose design is easily modified, the resin spring 60 can be accommodated in the case 40.

[0035] As described above, the reinforcing member 44 reinforces the tack outlet 40A on the side of the back plate 42. The reinforcing member 44 can improve the strength of the tack outlet 40A through which the tack 50 goes in and out.

[0036] [Bar] As described above, the yoke 50 is an arc-shaped member that is housed in the case 40 and can be extended from the case 40. The yoke 50 has an arc-shaped main body 51, a knob 52 for moving the main body 51, and a safety button 53 provided on the knob 52, each of which will be described in detail later.

[0037] As described above, the main body 51 is formed in an arc shape when the circle lock 30 is viewed from the front, and is formed in a circular shape when viewed in cross section in the axial direction of the latch 50. The main body 51 is made of metal (e.g., iron). A knob 52, which will be described in detail later, is provided in the center of the arc length of the main body 51. The main body 51 also has a recess 51A formed therein that engages with a latch bolt 80, which will be described in detail later. The recess 51A is formed adjacent to the knob 52 on the extending side of the knob 52 when the circle lock 30 is viewed from the front.

[0038] As described above, knob 52 is a part that the user grips to move latch 50. Knob 52 is connected to main body 51 by pin 55. The user can grip knob 52 to move main body 51. At this time, pin 55 is guided along guide hole 41B of die-cast case 41. Knob 52 is provided with safety button 53.

[0039] The safety button 53 fixes the latch 50 in the unlocked position to the case 40. The safety button 53 is biased in a direction that causes it to protrude outward from the knob 52. A claw portion 54 is connected to the inside of the safety button 53.

[0040] With the safety button 53, the claw portion 54 engages with the engagement hole 41D of the die-cast case 41, thereby fixing the yoke 50 to the case 40 in the unlocked position. The user can move the yoke 50 to the extended side by pinching the knob 52 while pressing the safety button 53, causing the claw portion 54 to climb over the engagement portion 41C and move through the guide hole 41B. This releases the yoke 50 from being fixed in the unlocked position, allowing the yoke 50 to be moved.

[0041] [Elastic member] The resin spring 60 will be described with reference to FIG.

[0042] As described above, the resin spring 60 biases the yoke 50 housed in the case 40 toward the case 40. In other words, the resin spring 60 biases the yoke 50 toward the inside of the case 40 when it is in the unlocked position. Here, the inside of the case 40 includes the yoke storage portion 41A of the die-cast case 41 and the back plate 42. The resin spring 60 can reduce noise caused by rattle between the yoke 50 and the case 40 while the power-assisted bicycle 10 is in motion.

[0043] The resin spring 60 is provided in the center in the left-right direction of the upper part of the case 40. This allows the resin spring 60 to bias the approximate center of the latch 50 when the latch 50 is in the unlocked position. As a result, noise can be further reduced.

[0044] As described above, the resin spring 60 is accommodated in the recess 42A formed in the back plate 42. This allows the resin spring 60 to be accommodated in the case 40 without changing the shape of the die-cast case 41, as described above. In other words, the resin spring 60 can be accommodated in the case 40 by forming the recess 42A in the back plate 42, which is easy to change in design.

[0045] The resin spring 60 is made of resin. This reduces the coefficient of friction between the yoke 50 and the resin spring 60 when the yoke 50 moves and slides against the resin spring 60. In other words, the resin spring 60 does not create resistance when the yoke 50 moves. Furthermore, the sliding between the yoke 50 and the resin spring 60 does not generate any noise.

[0046] The resin spring 60 has a base portion 61 housed in the recess 42A of the back plate 42, each of which will be described in detail later, a pair of protrusions 62 protruding from the base portion 61 toward the front side, and a pair of claws 63 protruding toward the front side at the upper end of the base portion 61. The base portion 61, protrusions 62, and claws 63 are integrally formed by resin molding.

[0047] The base portion 61 is a portion that serves as the base of the resin spring 60 and is formed in a fan shape. As described above, the base portion 61 is housed in the recess 42A of the back plate 42. The base portion 61 is disposed so as to cover the latch housing portion 41A of the die-cast case 41.

[0048] The protrusion 62 is a bent portion that protrudes toward the front side and presses the yoke 50 to urge the yoke 50. As described above, the protrusion 62 protrudes toward the front side at the upper end of the base portion 61. The protrusion 62 is formed as a segment that is bent in an L-shape. The protrusion 62 can reduce noise caused by rattle between the yoke 50 and the case 40 while the power-assisted bicycle 10 is in motion.

[0049] The claw portion 63 is a portion that engages with the engagement hole 41D of the die-cast case 41. As described above, the claw portion 63 protrudes toward the front side at the upper end of the base portion 61. The claw portion 63 enables the resin spring 60 to be fixed in the case 40. This prevents the resin spring 60 from shifting when the yoke 50 moves, and prevents the resin spring 60 from moving in conjunction with the movement of the yoke 50.

[0050] [Elastic member (other embodiments)] The resin spring 70 will be described with reference to FIG.

[0051] As described above, the resin spring 70 biases the latch 50 housed in the case 40 toward the inside of the case 40. In other words, the resin spring 70 biases the latch 50 toward the inside of the case 40 when it is in the unlocked position. The resin spring 70 is a member that differs from the above-described resin spring 60 only in shape, and the material, arrangement position, function, effect, etc. are the same as those of the above-described resin spring 60, so a description thereof will be omitted.

[0052] The resin spring 70 has a base portion 71 that is housed in the recess 42A of the back plate 42, a protruding portion 72 that is bent in a V-shape at the center portion in the left-right direction of the base portion 71 and protrudes toward the front side, and a pair of claw portions 73 that protrude toward the front side at the upper end portion of the base portion 71. The base portion 71, the protruding portion 72, and the claw portions 73 are integrally formed by resin molding.

[0053] The base portion 71, the protrusion portion 72 and the claw portion 73 are components that differ only in shape from the above-described base portion 61, the protrusion portion 62 and the claw portion 63, respectively, and their functions, effects, etc. are the same as those of the above-described base portion 61, the protrusion portion 62 and the claw portion 63, respectively, and therefore their explanation will be omitted.

[0054] [Latch bolt] The latch bolt 80 will be described with reference to FIG.

[0055] As described above, the latch bolt 80 is biased toward the yoke 50 and engages with the recess 51A of the yoke 50 when the yoke 50 extends from the case 40 (locked state). More specifically, the latch bolt 80 is always biased toward the yoke 50 and engages with the recess 51A of the yoke 50 when the yoke 50 extends from the case 40 (locked state). The latch bolt 80 can fix the yoke 50 to the case 40 in the locked position. Furthermore, in the locked state, the user can fix the latch bolt 80 with a lock, the details of which will be described later, and lock the circle lock 30.

[0056] The latch bolt 80 is accommodated in the latch bolt accommodating portion 41E of the die-cast case 41. The latch bolt 80 has a main body 81 that is biased toward the yoke 50, a spring 82 that biases the main body 81 toward the yoke 50, and a lock (not shown) that fixes the main body 81 in a state where the main body 81 is engaged with the recess 51A of the yoke 50, each of which will be described in detail below.

[0057] As described above, the main body 81 is biased by the spring 82 toward the yoke 50, and engages with the recess 51A of the yoke 50 when the yoke 50 is extended from the case 40. The main body 81 is formed by die-casting a metal (for example, zinc die-casting).

[0058] Furthermore, when the latch 50 is housed in the case 40 (unlocked state), the main body 81 is formed with a slope 81A that presses the latch 50 toward the corner portion 41R of the latch housing portion 41A of the case 40 in a cross section perpendicular to the axial direction of the latch 50. In other words, the slope 81A is formed on the main body 81 on the inside of the case 40 and on the back side of the circle lock 30.

[0059] With the above configuration, when the yoke 50 is housed in the case 40 (unlocked state), the yoke 50 is pressed against the slope 81A of the main body 81 and pressed against the corner portion 41R of the yoke housing portion 41A. As a result, when the yoke 50 is housed in the case 40 (unlocked state), it is possible to reduce noise caused by rattle between the yoke 50 and the case 40 while the electrically assisted bicycle 10 is traveling.

[0060] As described above, the lock secures the main body 81 in a state where the main body 81 is engaged with the recess 51A of the latch 50. The user can unlock the circle lock 30 by using a key (not shown) to unlock the latch 50 from being fixed by the main body 81, and then pinching the knob 52 to move the latch 50 toward the storage side.

[0061] [summary] The present disclosure is further illustrated by the following embodiments. Configuration 1: A bicycle lock that is attached to a bicycle body and that locks or unlocks a wheel of the bicycle, a horseshoe-shaped case and an arc-shaped bar that is housed in the case and can extend from the case; The yoke extends from the case and passes between the spokes of the wheel to form a ring with the yoke and the case, thereby fixing the rotation of the wheel; The lock is placed in the case to release the wheel from being fixed. The case is provided with an elastic member that biases the latch housed in the case toward the case. Bicycle lock. Configuration 2: The bicycle lock according to configuration 1, The elastic member is provided at the center of the case in the left-right direction. Bicycle lock. Configuration 3: The bicycle lock according to configuration 2, The elastic member is formed of a resin. Bicycle lock. Configuration 4: The bicycle lock according to configuration 3, The elastic member is housed in a recess formed in the case. Bicycle lock. Configuration 5: The bicycle lock according to configuration 4, The elastic member has a base portion accommodated in the recess and a protruding portion protruding from the base portion to bias the latch. Bicycle lock. Configuration 6: The bicycle lock according to configuration 5, The elastic member has a claw portion that engages with the inside of the case. Bicycle lock. Configuration 7: The bicycle lock according to configuration 5, The protrusion is formed by bending the base. Bicycle lock. Configuration 8: The bicycle lock according to configuration 1, a latch bolt that is biased toward the latch and engages with a recess of the latch when the latch is extended from the case; When the latch bolt is housed in the case, a slope is formed on the latch bolt in a cross section perpendicular to the axial direction of the latch bolt, which slope presses the latch bolt toward a corner portion in the case. Bicycle lock. Configuration 9: A bicycle having a bicycle lock according to any one of configurations 1 to 8.

[0062] It should be noted that the present disclosure is not limited to the above-described embodiments and their variations, and it goes without saying that various modifications and improvements are possible within the scope of the matters described in the claims of the present application. [Explanation of symbols]

[0063] 10 Electrically assisted bicycle (bicycle), 12 Frame (body), 12A Head pipe, 12B Front fork, 12C Down pipe, 12D Seat pipe, 12E Chain stay, 12F Seat stay, 13A Front wheel, 13B Rear wheel (wheel), 14 Handlebar, 14D Steering column, 15 Saddle, 16 Crank arm, 17 Pedal, 18 Chain, 19 Headlight, 21 Motor unit, 22 Battery, 30 Circle lock (bicycle lock), 40 Case, 40A Latch outlet, 40B Latch inlet, 41 Die-cast case, 41A Latch holder, 41B Guide hole, 41C Engagement portion, 41D Engagement hole, 41E Latch bolt accommodating portion, 41R Corner portion, 42 Back plate, 42A Recess, 43 Base, 44 Reinforcement member, 50 Latch, 51 main body, 51A recess, 52 knob, 53 safety button, 54 claw portion, 55 pin, 60 resin spring (elastic member), 61 base portion, 62 protrusion portion, 63 claw portion, 70 resin spring (elastic member), 71 base portion, 72 protrusion portion, 73 claw portion, 80 latch bolt, 81 main body, 81A inclined surface, 82 spring

Claims

1. A bicycle lock that is attached to a bicycle body and that locks or unlocks a wheel of the bicycle, a horseshoe-shaped case and an arc-shaped bar that is housed in the case and can extend from the case; The yoke extends from the case and passes between the spokes of the wheel to form a ring with the yoke and the case, thereby fixing the rotation of the wheel; The lock is placed in the case to release the wheel from being fixed. The case is provided with an elastic member that biases the latch housed in the case toward the case. Bicycle lock.

2. 2. The bicycle lock according to claim 1, The elastic member is provided at the center of the case in the left-right direction. Bicycle lock.

3. 3. The bicycle lock according to claim 2, The elastic member is formed of a resin. Bicycle lock.

4. 4. The bicycle lock according to claim 3, The elastic member is housed in a recess formed in the case. Bicycle lock.

5. 5. A bicycle lock according to claim 4, The elastic member has a base portion accommodated in the recess and a protruding portion protruding from the base portion to bias the latch. Bicycle lock.

6. 6. A bicycle lock according to claim 5, The elastic member has a claw portion that engages with the inside of the case. Bicycle lock.

7. 6. A bicycle lock according to claim 5, The protrusion is formed by bending the base. Bicycle lock.

8. 2. The bicycle lock according to claim 1, a latch bolt that is biased toward the latch and engages with a recess of the latch when the latch is extended from the case; When the latch bolt is housed in the case, a slope is formed on the latch bolt in a cross section perpendicular to the axial direction of the latch bolt, which slope presses the latch bolt toward a corner portion in the case. Bicycle lock.

9. A bicycle having a bicycle lock according to any one of claims 1 to 8.

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