JPH072184U - Bicycle equipped with locking device and locking device for the bicycle - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a bicycle having a lock device that is difficult to be operated accidentally from the outside and a lock device for the bicycle. A lock main body 11 is provided on one end surface of the crankshaft 1 along the axis of the crankshaft 1, and is located inside the hanger rack 2 on which the crankshaft 1 is fitted. The lock device 10 is configured by providing the lock member 22 that engages with and disengages from the locking portion 24 provided on the hanger rack 2 to prevent the crankshaft 1 from rotating.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a bicycle equipped with an antitheft lock device and a bicycle lock device.

[0002]

[Prior art]

 Conventionally, as a bicycle lock device, a lock body is attached to a front fork of a bicycle so as to be sandwiched, a lock member is provided in a penetrating manner on the lock body, and the lock member is operated by locking and unlocking the front wheel. Some come and go between the spokes.

[0003]

[Problems to be solved by the device]

 However, since the conventional lock device is attached to the front fork so that the lock body is clamped, it is possible to easily operate the attachment of the lock device from the outside and shift the attachment position of the lock body to the front fork. As a result, the position of the locking member protruding between the spokes was shifted and the front wheels were unlocked, which could result in the bicycle being stolen.

In view of the above problems, it is an object of the present invention to provide a bicycle equipped with a locking device that is difficult to be operated accidentally from the outside, and a bicycle locking device for the bicycle.

[0005]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention takes the following measures. That is, the feature of the present invention resides in that a lock device for preventing rotation of the crankshaft is provided in the crankshaft or the frame. A lock main body is provided on one end surface of the crankshaft along the axis of the crankshaft, and the lock main body is located inside the hanger rack to which the crankshaft is fitted, and is provided on the hanger rack. The locking member is provided to prevent the crankshaft from rotating by engaging and disengaging from the locking portion.

Further, a lock main body is internally provided in the frame, and a lock member that is located inside the frame and is engaged with and disengaged from the crankshaft to prevent the crankshaft from rotating is connected to the lock main body. It is in.

[0007]

[Action]

 In the present invention, since the bicycle has the lock device for preventing the crank shaft from rotating in the crank shaft or the frame, the lock device cannot be operated carelessly from the outside. Since the lock device blocks the rotation of the crankshaft by the lock member, power cannot be transmitted to the wheels unless the lock device is released. Therefore, the risk of the bicycle being stolen is extremely low.

[0008]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. 1 to 3 show a first embodiment of a bicycle lock device 10 according to the present invention. In FIG. 1, reference numeral 1 is a crankshaft of a bicycle, which is rotatably supported by a hanger rack 2. Crank arms 3 are attached to both ends of the crank shaft 1, and a chain gear 4 is fixed to the right crank arm 3.

The crankshaft 1 is provided with a lock body insertion hole 5 opening on the left side end face along the axis of the crankshaft 1, and the inner surface of the lock body insertion hole 5 is as shown in FIG. An engaging recess 6 is provided along the axis. Further, an L-shaped guide groove 7 extending in the axial direction and the circumferential direction and an elongated hole 8 extending in the axial direction are provided in the middle of the shaft 1 so as to respectively communicate with the lock body insertion hole 5. There is.

A coil spring 9 and a lock body 11 are installed in the lock body insertion hole 5 in this order from the back, and the coil spring 9 constantly urges the lock body 11 outward. The lock body 11 is composed of an inner cylinder 12 and an outer cylinder 13, and an outer periphery of the outer cylinder 13 is provided with an engagement projection 14 which is fitted into the engagement recess 6 of the lock body insertion hole 5 and which is external to the crankshaft 1. The cylinder 13 is slidable in the axial direction and is not rotatable in the circumferential direction. A slide groove 15 along the circumferential direction is provided in the middle of the outer cylinder 13, and a screw hole 16 is provided in the rear end.

A desired number of desk tumblers 17 are respectively fitted in the inner cylinder 12 by being biased by lock springs 18, and the inner cylinder 12 is rotated in the circumferential direction with respect to the outer cylinder 13 by operating a key 19. It is provided to be free. A pin hole 20 is formed at the rear end portion of the inner cylinder 12, the outer cylinder 13 is fitted in the crankshaft 1, the inner cylinder 12 is fitted in the outer cylinder 13, and the spring pin 21 is provided with a guide groove 7 and a slide groove 15. It is set in the pin hole 20 through. Further, after the crankshaft 1 is fitted into the hanger rack 2, the lock member 22 is screwed into the screw hole 16 of the outer cylinder 13 using the opening 25 of the hanger rack 2.

A ring-shaped member 23 is fixed to the inner surface of the hanger rack 2 at a position corresponding to the lock member 22 in the locked state of the lock body 11. A locking recess 24 is provided on the inner peripheral side of the ring-shaped member 23 so as to be recessed radially outward. The locking member 22 is fitted into and engaged with the locking recess 24 (locking part). As a result, the rotation of the crankshaft 1 is prevented. The lock body 10 and the locking recess 24 constitute the locking device 10 of the present invention.

Next, locking and unlocking of the lock device 10 will be described. When locking the lock device 10, the crank shaft 1 on the lock body 11 side is set to the upper position in order to align the positions of the crank shaft 1 and the locking recess 24, and the key 19 is inserted into the key hole 26 of the inner cylinder 12. When the lock body 11 is pushed against the coil spring 9, the lock member 22 is fitted into the locking recess 24, and the crankshaft 1 is prevented from rotating. Next, the key 19 is rotated in the direction of arrow a in FIG. 3 so that the pin 21 is engaged with the circumferential groove 27 of the guide groove 7, and the inner cylinder 12 is rotated in the direction of arrow a. Then, the lock body 11 is pushed into the locked state, and the key 19 is removed to complete the locking.

When the lock device 10 is unlocked, the reverse operation of locking the lock device 10 may be performed. That is, when the key 19 is inserted into the key hole 26 of the inner cylinder 12 and the inner cylinder 12 is rotated in the direction of arrow B, the pin 21 is disengaged from the groove 27, and the coil spring 9 causes the lock body to move. 11 protrudes outward, the engagement between the lock member 22 and the locking recess 24 is released, the crankshaft 1 becomes rotatable, and the lock device 10 is unlocked. At this time, if the key 19 is removed, it is safe because it will not come into contact with the key 19 when the foot is removed from the pedal.

According to the above configuration, since the lock body 11 is provided inside the crankshaft 1 and the locking portion between the lock member 22 and the locking recess 24 is located inside the hanger rack 2, the lock body 11 is conventional. As described above, since the position of the lock body 11 is not displaced and the locking portion cannot be operated from the outside, the lock member 22 and the locking recess 24 are unlocked and the bicycle is robbed. There is no such thing. In particular, since the crankshaft 1 is a main constituent part of the bicycle, if this part is broken, the bicycle itself cannot be used, and in that respect also, the possibility of the bicycle being stolen is extremely low. As shown by the alternate long and short dash line in FIG. 3, the guide groove 7 of the crankshaft 1 is provided with a groove 28 in the circumferential direction and the pin 21 is locked at the time of unlocking, so that the lock main body 11 is careless. It is also possible to prevent the crankshaft 1 from rotating by being pushed in.

FIG. 4 shows a second embodiment of the present invention. The same components as those of the first embodiment are designated by the same reference numerals and the description thereof will be omitted. A vertical pipe (frame) 30 of the bicycle is provided with a lock main body 11 inside the vertical pipe 30 so that a key insertion hole 31 is opened at the front side of the vertical pipe. The lock body 11 is provided with a swing arm 32 that is rotated in the vertical direction by rotating the key 19. The other end of the swing arm 32 is connected to a lock member 22 that is located inside the frame and that is engaged with and disengaged from the crankshaft 1 to prevent the crankshaft 1 from rotating.

As shown in the figure, the lock member 22 is composed of a link mechanism. When the swing arm 32 is moved upward, the tip 33 is moved downward and the swing arm 32 is moved downward. The tip 33 is configured to move upward. The tip portion 33 of the swing arm 32 is inserted inside through the opening 34 of the hanger rack 2 and can be engaged with and disengaged from a locking hole (locking portion) 35 provided in the crank shaft 1. .

When locking the locking device 10, the left crank arm 3 is moved upward and the locking hole 35 of the crankshaft 1 is moved upward so that the lock member 22 and the locking hole 35 are aligned with each other. After that, by inserting the key 19 into the lock body 11 and moving the swing arm 32 upward by rotating the key 19, the tip 33 of the lock member 22 is moved downward, so that the tip 33 is moved. It is inserted into the locking hole 35. As a result, the rotation of the crank shaft 1 is prevented and the locking is completed.

When the lock device 10 is unlocked, the key 19 is inserted into the lock body 11 and the swinging arm 32 is moved downward by the pivotal operation of the key 19, and the tip portion 33 of the lock member 22 is moved. Is moved upward, the tip 33 of the lock member 22 is withdrawn from the locking hole 35, the crankshaft 1 can be rotated, and unlocking is completed. The present invention is not limited to the above embodiment, but in the second embodiment, the moving distance of the lock member 22 is increased to lock the crankshaft 1 or the hanger rack 2 in a penetrating manner. Good.

[0020]

[Effect of device]

 According to the present invention, since the lock device for preventing the rotation of the crank shaft is provided in the crank shaft or the frame, the lock device cannot be inadvertently operated from the outside to prevent theft. It can be effectively achieved. Since the lock device blocks the rotation of the crankshaft by the lock member, power cannot be transmitted to the wheels unless the lock device is released. Therefore, the bicycle can be more effectively prevented from being stolen. You can

[Brief description of drawings]

FIG. 1 is a longitudinal sectional view of an essential part showing a first embodiment of the present invention.

FIG. 2 is a sectional view taken along the line AA of FIG.

FIG. 3 is an exploded perspective view of a lock body.

FIG. 4 is a vertical front view showing a second embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Crankshaft 2 Hanger rack 10 Lock device 11 Lock body 22 Lock member 24 Locking concave part (locking part) 30 Standing pipe (frame) 35 Locking hole (locking part)

Claims (3)

[Scope of utility model registration request] 1. A bicycle having a lock device for preventing rotation of the crankshaft in a crankshaft or a frame. 2. A lock main body is provided inside one end surface of the crank shaft along an axis of the crank shaft, and the lock main body is located inside a hanger rack for externally fitting the crank shaft, and the hanger rack. A lock device for a bicycle, comprising: a lock member which is engaged with and disengaged from a locking portion provided on the lock member to prevent the crankshaft from rotating. 3. A lock main body is internally provided in the frame, and a lock member which is located inside the frame and is engaged with and disengaged from the crankshaft to prevent rotation of the crankshaft is connected to the lock main body. A bicycle lock device characterized by.