JPH07242189A - Parking safety mechanism for bicycle - Google Patents

Abstract

PURPOSE:To carry out storage of a handlebar and prevention of rotation and turning of a front wheel at the same time. CONSTITUTION:A handlebar 1 is installed in a projection 6, in which an outward projection 8 is rotationally, mounted on an inward projection 7 vertically projecting and being fixed in the front side of a handle stem 5, and is positioned horizontally in the operating position or positioned slantingly in the vertical direction in the operation impossible position. In a front wheel rotation preventing mechanism 27, when the handlebar l is rotated to the operation impossible position, an operation rod 28 connected to the outward projection 8 via a swivel joint 31, a rotary pin 33, and an operation lever 32 is lowered, and a front wheel latch 34 connected to the lower end of the operation rod 28 is reciprocated to be projected in the direction crossing the front wheel 2, and consequently, the rotation of the front wheel 2 is prevented. In a front wheel tuning preventing mechanism 37, a joint projection 38 is engaged with a joint receiving 39 arranged in a head pipe 4 according to the descent of the operation rod 28, and the handlebar 1 and the head pipe 4 are secured around a handle stem 5, and as a result, the front wheel 2 is prevented from turning.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bicycle, and more particularly, to a bicycle parking safety mechanism capable of safely and smoothly parking a bicycle even in a narrow place, an inclined place or the like.

[0002]

2. Description of the Related Art In order to safely park a bicycle, a bicycle is provided with a stand such as a compatible stand and a stand, and when the bicycle is parked, the stand is activated to stop in a standing state. . However, when parking in a narrow place such as a garage or a bicycle parking lot, it is difficult to park the bicycle smoothly because the handlebar interferes.For example, in the garage, the handlebar is damaged or the handlebar is parked at the bicycle parking lot. There is a risk that the bicycle may fall over due to contact with an adjacent bicycle, making it difficult to park the bicycle smoothly and safely.

Therefore, conventionally, various bicycle parking safety mechanisms have been proposed in which a handlebar is rotatably mounted around a handlepost, and when the bicycle is parked, the handlebar is turned in the front-rear direction to take an uncontrollable posture. Yes (eg, Kaikai Sho 5
6-22183, Japanese Utility Model Laid-Open No. 63-43993, etc.).

[0004]

However, in the above-mentioned bicycle parking safety mechanism, a large torque acts around the handle post during operation, so that play around the handle post is likely to occur between the handle bar and the handle post. As a result, it is difficult to operate the front wheels sharply, which may cause a trouble in driving. Also, when turning the handlebar in the front-back direction, the front wheels may sway and the direction may change.
There is a problem in that it is difficult to park the bicycle smoothly because the front wheel must be pressed down with the foot.

Further, since most of the bicycle parking places are not necessarily flat but are inclined, there is a tendency that the direction of the front wheels changes greatly when the bicycle is parked, or the front wheels rotate and move forward. Therefore, even if the bicycle is once parked, the stopping posture changes significantly, it is not possible to stop at a predetermined place, and in some cases, the bicycle may fall over, which makes it difficult to park the bicycle smoothly and safely. is there. Therefore, a lock has been provided between the conventionally proposed handle post or front fork and the head pipe, and when the bicycle is parked, the handle post or front fork is fixed to the head pipe and locked, and the handle bar or the front wheel is prevented from turning. Bicycle parking safety mechanism (ex.
No. 3, gazette of Japanese Utility Model Laid-Open No. 3-26683), a front wheel rotation blocking member is provided on the front fork so that it can be retracted to the front wheel side, and a handlebar or a handle post is provided with an operating portion having a locking mechanism. The front wheel rotation preventing member is projected in a direction that crosses the front wheel by means of a portion, and the bicycle parking safety mechanism is adapted to be locked while maintaining this posture (eg, actual opening Sho 61-150).
No. 683, Japanese Utility Model Laid-Open No. 3-28988, etc.) may be adopted. However, when these bicycle parking safety mechanisms are adopted, each of them must be operated individually, which causes a problem that the bicycle parking operation becomes complicated.

The present invention has been made in view of the above-mentioned conventional circumstances, and its object is to solve a problem in driving in a narrow place,
(EN) It is intended to provide a bicycle parking safety mechanism that allows a bicycle to be parked smoothly and safely by a simple operation even in an inclined place.

[0007]

In order to solve the above-mentioned problems, in the bicycle parking safety mechanism of the present invention, the handlebar can be rotated by a predetermined angle about the axis intersecting the axis of the head pipe within the vertical plane in the front-rear direction. The handle post is provided so that it can be positioned and fixed at two positions, a steering position and an uncontrollable position that is inclined in the vertical direction.

A locking mechanism may be provided for locking and locking the handle bar at the steering position and the unsteerable position with respect to the handle post.

The handlebar is provided on the handle post through a protrusion provided so as to intersect the axis of the head pipe in a vertical plane in the front-rear direction, and the protrusion includes an inward protrusion fixed to the handle post and an inward protrusion. It may be rotatably mounted on the outside and has an outside protrusion having a handlebar attachment portion at one end. At that time, the locking mechanism may be provided so as to lock by locking the outer protrusion to the inner protrusion, for example, by forming a lock hole in the inner protrusion corresponding to the steering position and the uncontrollable position of the handlebar, A lock pin that engages with the lock hole is provided so as to be able to move forward and backward so as to project outward, a key protrusion is provided on the lock pin, a key ring having a key groove is rotatably provided outside the lock pin, and the key ring is rotated to match the key protrusion with the key protrusion. Alternatively, the lock pin may be released from the lock pin.

A front wheel turning prevention mechanism may be provided to prevent the turning of the front wheels by connecting and fixing the handle bar to the head pipe when the bicycle is parked. The front wheel turning prevention mechanism has an upper end rotatably mounted about an axis parallel to an axis intersecting the axis of the head pipe within a vertical plane in the front-rear direction with respect to the handlebar, and a lower end vertically with respect to the handle post or the front hawk. It may be composed of an actuating rod movably mounted, and a connecting projection and a connecting bridge respectively provided on the operating rod and the head pipe so as to be engaged with each other in association with the lowering movement of the operating rod. At this time, an L-shaped connecting projection may be provided on the operating rod downward, and a connecting receiver having a connecting hole may be provided on the head pipe. Further, the connection receiver has a plurality of connection holes provided in parallel in the direction around the head pipe, or a projection guide portion that guides the tip of the connection protrusion to the side of the connection hole in the direction around the head pipe. But it's okay.

A front wheel rotation preventing mechanism for preventing rotation of the front wheels when the bicycle is parked may be provided. The front wheel rotation preventing mechanism has an upper end rotatably mounted about an axis parallel to an axis intersecting the axis of the head pipe in a vertical plane in the front-rear direction with respect to the handlebar, and the other end with respect to the handle post or the front hawk. It may be composed of an actuating rod that is vertically movable and a front wheel latch that is interlockingly connected to the actuating rod so as to project in a direction that traverses the front wheel in conjunction with the lowering movement of the actuating rod. The front wheel latch may have a middle portion rotatably attached to the front fork and one end rotatably connected to the operating rod.

[0012]

[Operation] When the bicycle is parked, the handlebar is released from the fixed position, rotated from the control position by a predetermined angle and fixed to the uncontrollable position. The handlebar rotates about an axis intersecting the axis of the head pipe and is in a vertically inclined state at the uncontrollable position. That is, the handlebar does not protrude significantly from both sides of the body of the bicycle, and the width of the bicycle is reduced. For those equipped with a locking mechanism, the handlebar is locked in the uncontrollable position when the bicycle is parked, and is held so that it cannot be rotated to the control position.

In the case where the handlebar is attached to the handlepost via the protrusion, the handlebar is pushed in the vertical direction when the bicycle is parked so as to rotate around the inward protrusion and rotate from the steering position to the uncontrollable position in the vertical direction. It will be tilted. Further, in the case where the locking mechanism is provided, the outer protrusion is fixed to the inner protrusion to lock the handlebar, and the handlebar is fixedly held at the uncontrollable position. For those with a locking mechanism that locks or unlocks the lock pin with the key ring, the lock pin is unlocked by rotating the key ring when the bicycle is parked to match the key groove with the key protrusion, and the lock pin is retracted and pulled out from the lock hole. To unlock. This allows the outer protrusion to rotate freely with respect to the inner protrusion,
Rotate the handlebar to project inward and position it in the non-steerable position. Then, at the uncontrollable position, the lock pin is advanced to engage with the lock hole, and the key ring is rotated. As a result, the lock pin is held in a state of being engaged with the lock hole, and the outer protrusion is fixed to the inner protrusion to be locked.

In the case of the one provided with the front wheel turning prevention mechanism, the upper end of the operating rod is rotated around the axis intersecting with the axis of the head pipe and is lowered by pushing the handle bar up and down to rotate, and the entire operating rod is lowered. To do. As a result, the operating rod, the connecting projection provided on the head pipe, and the connecting bridge engage with each other, and the operating rod is restrained from rotating around the head pipe. By the way, the operating rod has its upper end rotatably attached to the handlebar and its lower end attached to the handlepost or the front hawk so that it can move up and down. Rotate around. Therefore, the handlebar, the handlepost, and the front fork are restrained from rotating around the head pipe by the engagement of the connecting protrusion and the connecting bridge, and the front wheel is held in a predetermined direction.

At this time, in the case where the connection receiver has a plurality of connection holes, the front wheel is selectively restrained in a plurality of directions by selecting the connection hole with which the connection protrusion is engaged.
Also, in the case where the projection guide portion is provided on the side of the connection hole in the direction around the head pipe, when the front wheel is not oriented in the predetermined direction, the tip of the connection projection comes into contact with the projection guide portion, and The rotation is blocked on the way. As a result, it is determined that the front wheels are not oriented in a predetermined direction, and in this state, the handlebar is rotated around the head pipe so that the tip of the connecting projection is disengaged from the protruding guide portion and enters the connecting hole. Then, by rotating the handlebar again about the axis intersecting with the axis of the head pipe, the connecting protrusion moves downward in the connecting hole while moving substantially in the left-right direction, and engages with the connecting bridge in a predetermined state to set the front wheel to the predetermined position. Restrain in the direction of. That is, even when the front wheels are not oriented in the predetermined direction, the connection protrusions and the connection receivers are engaged smoothly and reliably, and the front wheels are restrained in the predetermined direction.

In the case of the one provided with the front wheel rotation preventing mechanism, by pushing the handle bar in the vertical direction to rotate, the upper end of the operating rod is rotated around the axis intersecting with the axis of the head pipe to descend, and the entire operating rod is lowered. Lowers to project the front wheel latch in the direction crossing the front wheel. With this, when the front wheels rotate, the spokes of the front wheels come into contact with the front wheel latches,
Prevent rotation of the front wheels. In addition, for those with a connecting protrusion or connecting receiver of the front wheel turning prevention mechanism on the operating rod,
By pushing the handlebar up and down and rotating,
The handlebars are stored in the uncontrollable position, the front wheel turning prevention mechanism is operated, and the front wheel rotation prevention mechanism is operated together.
At that time, for those equipped with a locking mechanism, the operating bar is held in the lowered position by locking the handlebar at the uncontrollable position, and the front wheel turning prevention mechanism and the front wheel rotation prevention mechanism are also linked. Keep locked. When the handlebar is returned from the uncontrollable position to the control position, the operating rod is raised, and the front wheel turning prevention mechanism and the front wheel rotation inhibiting mechanism are also released at the same time. Then, by fixing the handlebar to the handlepost, the handlebar is fixedly held in the control position, and
The front wheel turning prevention mechanism and the front wheel rotation prevention mechanism are held in an inoperative state.

[0017]

Embodiments of the present invention will be described with reference to the drawings. The bicycle parking safety mechanism shown in the drawing prevents the front wheels from rotating by moving the handlebar 1 from the horizontal steering position as shown in FIGS. 1 and 2 to the vertically uncontrollable position as shown in FIG. The mechanism 27 and the front wheel turning prevention mechanism 37 are operated simultaneously. The handlebar 1 is integrally connected to a front fork 3 that rotatably supports a front wheel 2, and is attached to a handle post 5 that is rotatably supported around the axis of a head pipe 4 via a protrusion 6. As shown in FIGS. 4 to 7, the protrusion 6 has an inner protrusion 7 having a circular cross section that is vertically protruded and fixed to the front of the handle post 5, and is rotatably mounted outside the inner protrusion 7. An outer protrusion 8 is retained by a half nut 9, and a handlebar mounting portion 10 for sandwiching and fixing the handlebar 1 is provided on the tip side of the outer protrusion 8. Since the handle post 5 is provided along the axis of the head pipe 4, the inward protrusion 7 is
It is provided along an axis line (hereinafter, referred to as an intersecting axis line) that perpendicularly intersects with the axis line of the head pipe 4 in the front-rear direction in a vertical plane in the front direction. Therefore, the outer protrusion 8
Will rotate around the intersecting axis and support the handlebar 1 so as to be rotatable in the up and down direction with the inward projection 7 as the center.

Between the inner protrusion 7 and the outer protrusion 8,
The locking mechanism 11 and the auxiliary fixing means 24 are provided, and the outer protrusion 8 is positioned so that the handlebar 1 is in the steering position and the uncontrollable position, and is fixed and locked in each position. The locking mechanism 11 has a locking operation part 1 having a lock pin 13 provided on the outer protrusion 8.
2 and a first lock hole 20 and a second lock hole 21 provided in the inner protrusion 7. The locking operation unit 12 is
The lock pin 13 is provided with a key fixing portion 14 having a plurality of key projections 15 formed at equal intervals in the longitudinal direction of the lock pin 13.
The lock pin 13 can be moved forwards and backwards in the operating portion main body 16 and is elastically biased in the direction of 7 by the spring 17 so that a plurality of key rings 18 having key grooves 19 are provided. It is rotatably installed outside. An unlocking mark (not shown) is displayed on the actuating portion main body 16 in correspondence with the position of the key projection 15, and a serial number (not shown) is displayed on the outer periphery of each key ring 18 for each key ring. The keyway 19 is adapted to be aligned with the key protrusion 15 by rotating 18 so that the dark number matches the unlock mark. Then, as shown in FIGS. 6 and 9, the key groove 19 is aligned with the key protrusion 15 so that the lock pin 13 can freely move back and forth, and the key groove 19 is separated from the key protrusion 15 as shown in FIGS. 5 and 8. This prevents the lock pin 13 from moving back and forth by the key ring 18. Further, the lock pin 13 is provided such that the tip end thereof protrudes outward and always protrudes inward of the lock pin 13, and is engaged with the first lock hole 20 and the second lock hole 21. The first lock hole 20 is formed on the upper side of the inner protrusion 7 as shown in FIG.
1 is formed on the side which is separated by 90 degrees counterclockwise, and when the lock pin 13 is engaged with the first lock hole 20, the handlebar 1 is positioned so that the handlebar 1 is in the steering position and the outer protrusion 8 is positioned. The handlebar 1 is positioned so as to be in an uncontrollable position when engaged with the hole 21. A guide groove 22 is formed in the upper part of each lock hole 20 and 21 so as to connect them, and when the outer protruding portion 8 rotates, the tip end of the lock pin 13 moves along the guide groove 22 and each lock hole is moved. It stops at the positions of the holes 20 and 21. As a result, the rotation range of the outer protrusion 8 is restricted to 90 degrees and positioned, and the handlebar 1 is positioned at the steering position and the uncontrollable position. A seal member 23 is mounted between the actuating portion main body 16 and the lock pin 13, so that the lock pin 1 can be protected by water intrusion.
It is designed to prevent the malfunction of item 3.

The auxiliary fixing means 24 reinforces the fixed state of the outer protruding portion 8 and the inner protruding portion 7 by the locking mechanism 11, and as shown in FIGS. 4 to 7, the tightening bolt 25 is reversed on the right side of the outer protruding portion 8. It is mounted with a screw, and the tightening bolt 25 is rotated rearward by the operating lever 26 so as to be protruded inward of the outer protrusion 8, and the outer protrusion 8 is pressed to the inner protrusion 7 to be fixed. Auxiliary fixing means 24
Does not necessarily have to be provided, but it reduces the load on the locking mechanism 11 during operation, and the handlebar 1
Is preferably provided to further stabilize the fixation.

Next, the front wheel rotation preventing mechanism 27 includes an operating rod 28 which is interlocked with the handlebar 1, and the operating rod 28 is provided.
Is activated by the movement of the. Operating rod 28
The first operating rod 29 and the second operating rod 30 are connected so that their lengths can be adjusted, and a universal joint 31 is attached to the upper end of the first operating rod 29.
Is provided, and the universal joint 31 is rotatably connected to an actuating lever 32 which protrudes outward and is vertically fixed to the left side of 8 by a rotating pin 33, and the lower end of the second actuating rod 30 is rotatably connected to one end of a front wheel latch 34. They are connected and provided parallel to the head pipe 4. The front wheel latch 34 is rotatably attached to a mounting seat 35, the middle of which is fixed to the front fork 3, and one end of which is the second.
It is rotatably connected to the operating rod 30 and extends along the front fork 3 as shown in FIG. 10 when it is not operating, and when operating it projects across the front wheel 2 as shown in FIG. . The operation of the front wheel rotation preventing mechanism 27 is performed by rotating the handlebar 1. When the bicycle is parked, the handlebar 1 is rotated to the uncontrollable position, and this rotation causes the upper end of the operating rod 28 to project around the protrusion 6. Rotate,
Move to the right while descending. As a result, the operating rod 28
Of the front wheel latch 34 swings with the middle supporting the front wheel latch 34 on the mounting seat 35 as a fulcrum, and one end of the front wheel latch 34 projects in the direction crossing the front wheel 2. Therefore, when the front wheels 2 are about to rotate, the spokes 36 come into contact with the front wheel latches 34 and prevent the front wheels 2 from rotating. In addition, the first operating rod 29 and the second
By connecting the operating rod 30 so that the length thereof can be adjusted, the height of the handle post 5 can be adjusted, and the bicycle can be adapted to a bicycle having the handle posts 5 of various heights.

In the front wheel turning prevention mechanism 37, an inverted L-shaped rod-shaped connecting projection 38 is projected and fixed at about 45 degrees to the rear right of the operating rod 28, and a plate-like connecting receiver 39 having a connecting hole 40 is attached to the head pipe 4. It is fixed by protruding to the left front about 45 degrees.
As shown in FIG. 12, the connection hole 40 is arranged so as to face the connection protrusion 38 when it is not operated, and is formed long in the left-right direction. At the time of operation, as shown in FIG. 13, the connecting projection 38 engages with the connecting hole 40 to prevent the operating rod 28 from rotating around the head pipe 28 and hold the front wheel 2 substantially forward. . The operation of the front wheel turning prevention mechanism 37 is performed by rotating the handlebar 1, and the operating rod 28 moves as described above when the bicycle is parked.
Since the protrusion 6 is provided perpendicularly to the handle post 5, the operating rod 28 moves in parallel to the horizontal plane passing through the center of the handle post 5. Also, the operating rod 28
The upper end of the operating rod 28 moves to the right in parallel to the left-right surface, the lower end of the operating rod 28 moves to the left parallel to the left-right surface, and the operating rod 28 is inclined to the right. As a result, the connecting protrusion 38 is moved from the position shown in FIG.
After moving to the position shown by the chain double-dashed line 38 in FIG. 14, it moves to the position shown by the solid line 38 in FIG. 14, that is, to the position shown in FIG. 13, and as shown in FIG. In this state, the connecting hole 40 is engaged.

The bicycle parking safety mechanism of this embodiment is constructed as described above, and its operation will be described below. When the front wheel 2 is parked frontward, the front wheel 2 is stopped at the parking position in the state shown in FIG. 1, the operation lever 26 is rotated forward to loosen the tightening bolt 25, and the fixing operation of the auxiliary fixing means 24 is released. To do.
Then, each key ring 18 of the locking mechanism 11 is sequentially rotated to match a predetermined dark number with the unlock mark. As a result, the key groove 19 is aligned with the key projection 15, and the engagement between each key ring 18 and the key fixing portion 14 is released, and the locking mechanism 11 is released.
Unlock. In this state, the lock pin 13
Is freely moved, and the lock pin 13 is pulled up and retracted as shown in FIG. 6 to be disengaged from the first lock hole 20. As a result, the outer protrusion 8 becomes rotatable and the handlebar 1 can be rotated leftward. By rotating the handlebar 1 to the left, the locking actuating portion 12 is rotated integrally with the outer protrusion 8 and the tip of the lock pin 13 abuts the upper end of the second lock hole 21 to prevent the handlebar 1 from rotating. To do. In this state, the handlebar 1 is in the uncontrollable position and has a posture inclined in the vertical direction. Then, the lock pin 13 is advanced to the second position.
The key ring 18 is arbitrarily rotated by engaging with the lock hole 21. As a result, the key groove 19 is separated from the key protrusion 15,
The key ring 18 engages between the key protrusions 15 to fix and hold the key fixing portion 14. That is, the locking pin 13 is prevented from moving back and forth, the outer protruding portion 8 and the inner protruding portion 7 are fixed and locked, and the handlebar 1 is fixed and locked at the uncontrollable position.

On the other hand, by moving the handlebar 1 to the uncontrollable position, as described above, the front wheel rotation preventing mechanism 2 is provided.
7 is actuated and the front wheel latch 34 is swung by the lowering of the actuating rod 28, one end of which is projected in the direction crossing the front wheel 2 as shown in FIGS. 3 and 11, and rotation of the front wheel 2 is blocked. At the same time, the front wheel turning prevention mechanism 37 is operated to move the connecting projection 38 from the position shown in FIG. 12 to the position shown by the chain double-dashed line 38 in FIG. 14, and then the position shown by the solid line 38 in FIG.
While moving to the position shown in FIG. 3, as shown in FIG. 3, it engages with the connecting hole 40 with the tip end facing downward left. As a result, the rotation of the operating rod 28 around the handle post 5 is blocked. Further, the upper end of the operating rod 28 is the operating lever 3
2, since it is connected to the handlebar 1 via the outer protruding portion 8 and the like, and the lower end is connected to the front fork 3 via the front wheel latch 34, the mounting seat 35, etc. Handlebar 1 and front hawk 3
Since the connection protrusion 38 engages with the connection hole 40, the rotation of the handlebar 1 and the front fork 3 around the handle post 5 is prevented, and the front wheel 2 moves forward. Hold in a fixed position.

As described above, according to the present embodiment, by moving the handlebar 1 to the uncontrollable position, the front wheel rotation blocking mechanism 27 and the front wheel turning blocking mechanism 37 are simultaneously actuated. It is possible to park bicycles smoothly and safely with a simple operation even in an inclined place. Moreover, only by locking the handlebar 1, the handlebar 1
Since the rotation of the front wheel 2 to the steering position and the rotation and turning of the front wheel 2 are also locked, a complicated locking mechanism is applied to the front wheel rotation prevention mechanism 27.
Also, since it is not necessary to provide the front wheel turning prevention mechanism 37, it is possible to surely prevent theft with a simple operation.

Next, another embodiment will be described. The locking mechanism 11 in the present embodiment may be another method such as a cylinder key, and may have any structure as long as the outer protruding portion 8 and the inner protruding portion 7 are securely fixed and locked. The protrusion 6 may be provided so as to protrude rearward, may be provided upward or downward, and the outer protrusion 8 or the handle bar 1 may be an axis line that intersects the axis of the head pipe 4 in the vertical plane in the front-rear direction. It only needs to be able to rotate around. The outer protrusion 8 may be provided in the clockwise direction, and its rotation angle may be set to an angle other than 90 degrees, and the handlebar 1 may be stored so as not to get in the way when the bicycle is parked. It should be like this. The rotation direction and the rotation angle of the outer protrusion 8 can be arbitrarily set by changing the arrangement of the first lock hole 20 and the second lock hole 21 provided in the inner protrusion 7.
The rotation range of the outer protrusion 8 is set by the relationship between the lock pin 13 of the locking mechanism and the lock holes 20 and 21, but it may be set by another positioning mechanism.

The upper end of the operating rod 28 is connected to the operating lever 32 by the universal joint 31 and the rotating pin 33, but may be directly connected by the rotating pin 33. When the protrusion 6 is attached to the handle post 5 at an angle other than vertical, the upper end of the operating rod 28 does not move in parallel with the horizontal surface passing through the center of the handle post 5,
Since it also moves in the front-rear direction, the upper end of the operating rod 28 is rotatably connected to the operating lever 32 via a universal joint or with play, and the lower end is attached via a universal joint or with play to the front wheel latch. It is preferably adapted to be rotatably connected to 34. The upper end of the operating rod 28 may be rotatably connected to a portion that rotates integrally with the handlebar 1, and may be directly connected to the handlebar 1, for example.

The arrangement, orientation, etc. of the connection holes 40 of the connection receiver differ depending on the orientation of the front wheel 2 and the arrangement, orientation, etc. of the connection protrusions 38 when the bicycle is parked. In the case of looping, the connection receiver 39 may be set by attaching it at an angle smaller than 45 degrees to the left front. Also,
When the protrusion 6 is attached to the handle post 5 in an upward or downward direction, the protrusion 6 may be formed to be slightly longer in the radial direction of the head pipe 4 or may be formed along the radial direction. In order to smoothly engage the connecting protrusion 38 with the connecting hole 40 even when the front wheel 2 is slightly deviated from the predetermined direction, a protruding guide portion is formed in the connecting hole 40 around the head pipe 4. Is preferred. For example, the front wheel turning prevention mechanism 37 shown in FIG.
Is connected to the protrusion 6 that is attached to the front of the handle post 4 in an upward direction, and a connection hole 40 is formed in the connection receiver 39 along the radial direction of the head pipe 4, and flat protrusion guide portions are provided on both sides of the connection hole 40. It is formed. According to the front wheel turning prevention mechanism 37, the front wheels 2 are not operated during the parking operation.
Is in the direction deviated from the front in the X arrow direction, the operating rod 28 and the connecting projection 38 are at the position shown by the two-dot chain line on the right side, and the tip of the connecting protrusion 38 is connected by the lowering of the operating rod 28. When it reaches the height position of the receiver 39, it becomes the position shown by the solid line. In this state, the tip of the connecting protrusion 38 contacts the protrusion guide portion of the connecting bridge 39, and prevents the handlebar 1 from rotating to the unsteerable position. Then, the handle bar 1 is rotated around the handle post 4 in the Y arrow direction, and when the position reaches the position shown by the two-dot chain line on the left side, the tip of the connecting protrusion 38 starts to engage with the connecting hole 40. In this state, by rotating the handlebar 1 again to the uncontrollable position, the connection protrusion 38
Moves in the connecting hole 40 while descending, and the handlebar 1
The engagement with the coupling receiver 39 is completed when the vehicle reaches the uncontrollable position. Further, since the connecting hole 40 is formed to be slightly wider than the connecting protrusion 38, the front wheel 2 stops toward the front. In order to select the direction of the front wheels according to the situation of the bicycle parking place, a plurality of connection holes 40 are formed in the connection receiver 39.
It is preferable that the operating rod 28 is connected to the protrusion 6 in the same manner as that shown in FIG. 15, but a plurality of connecting holes 40 are formed in the radial direction of the head pipe 4. May be. Note that, in FIGS. 15 and 16, the same reference numerals as those in the other drawings mean the same functional members.

[0028]

According to the bicycle parking safety mechanism of the present invention, since the width of the vehicle body can be narrowed by moving the handle bar to the uncontrollable position which is inclined in the vertical direction when the bicycle is parked, the garage, the bicycle parking lot, etc. are narrow. Even in places, there is no risk of the parked car being damaged by the handlebars or coming into contact with an adjacent bicycle and tipping over. Further, when the handlebar is moved to the uncontrollable position, the force for rotating the handlepost does not act, so that the handlebar can be smoothly set to the uncontrollable position without changing the direction of the front wheels. Therefore, it has become possible to park the bicycle safely and smoothly. Further, since the handlebar is provided so as to be rotatable about an axis intersecting the axis of the head pipe in the vertical plane in the front-rear direction with respect to the handlepost, the handlebar is not rotated between the handlebar and the handlepost as in the conventional case. There is no play in the. Therefore, at the time of driving, the handlebar is rotated at the same time when the handlebar is operated, and the direction of the front wheels can be swiftly turned, so that there is no problem in driving.

In the case where a lock mechanism is provided, it is impossible to rotate the handle bar to the control position by fixing the handle bar to the uncontrollable position inclined in the vertical direction and locking the handle bar. It has become possible to prevent this.

When a front wheel turning prevention mechanism is provided,
Since the handle bar, the handle post, or the front fork is coupled and fixed through the actuating rod so as not to rotate around the head pipe by the engagement of the coupling projection and the coupling receiver, the front wheel can be restrained in a predetermined direction. This allows
Even when the bicycle is parked in an inclined place, the front wheels can be parked in a predetermined direction, the bicycle can be prevented from moving or falling, and the bicycle can be parked safely in a predetermined posture.
Further, since the connecting projection and the connecting bridge are engaged or disengaged by rotating the handlebar between the steering position and the uncontrollable position, it is not necessary to provide a separate operation portion in the front wheel turning prevention mechanism, and the structure is simpler. be able to. further,
When parking the bicycle, the handlebar is rotated to the uncontrollable position and tilted up and down, and at the same time the front wheel turning prevention mechanism is activated, so it is possible to park the bicycle safely even in a narrowly sloped place. It became.

When the connection receiver of the front wheel turning prevention mechanism has a plurality of connection holes, the front wheel can be restrained in a plurality of directions by selecting the connection holes for engaging the connection protrusions. It is possible to park more safely depending on the situation of the place where the bicycle is parked. Further, when the connection receiver has the projection guide portion on the side of the connection hole, the front wheel is directed in a predetermined direction by rotating around the head pipe while rotating the handlebar to the uncontrollable position. Even if there is not, the connecting protrusion can be properly engaged with the connecting hole, the position of the connecting hole,
The front wheel turning prevention mechanism can now be operated reliably without checking the direction of the front wheels.

If a front wheel rotation preventing mechanism is provided,
Since the front wheel latch protrudes in the direction crossing the front wheel when the bicycle is parked, the spokes come into contact with the front wheel latch when the front wheel rotates, and prevent the front wheel from rotating. Therefore, even when the bicycle is parked in an inclined place, the rotation of the front wheels can be prevented, the movement of the bicycle from the stop position can be prevented, and the bicycle can be parked safely in a predetermined posture. Further, since the front wheel latch is operated by rotating the handlebar between the steering position and the uncontrollable position, it is not necessary to separately provide an operating portion for the front wheel rotation preventing mechanism, and the structure can be simplified accordingly.

When the front wheel turning prevention mechanism and the front wheel rotation prevention mechanism are both provided, the handlebar is lowered by rotating the handlebar to the uncontrollable position, so that the handlebar is tilted in the vertical direction. At the same time, the above mechanisms operate. Therefore, the width of the bicycle is narrowed, the direction of the front wheels is maintained in a predetermined direction, and the front wheels are parked in a state in which the rotation of the front wheels is blocked, making it possible to park the bicycle smoothly and safely. It was At that time, if a lock mechanism is provided, the handlebar is locked at the uncontrollable position and locked, and each mechanism is fixed and held in the operating state, which enables more reliable prevention of theft. It became.

[Brief description of drawings]

FIG. 1 is a conceptual explanatory view of an embodiment of the present invention, showing a non-operating state of a bicycle parking safety mechanism.

FIG. 2 is a view on arrow AA of FIG.

FIG. 3 is a view taken along the line AA of FIG. 1 and shows a state when the bicycle parking safety mechanism is in operation.

FIG. 4 is an enlarged view taken along the line BB of FIG.

5 is a cross-sectional view taken along the line CC of FIG. 4, showing a state in which the protrusion is locked by the locking mechanism.

FIG. 6 is a cross-sectional view taken along the line CC of FIG. 4, showing a state in which the locking of the protrusion is released.

FIG. 7 is a cross-sectional view taken along the line DD of FIG.

8 is an enlarged cross-sectional view taken along the line EE of FIG. 5, showing a state when the locking mechanism is in operation.

9 is an enlarged cross-sectional view taken along the line FF of FIG. 6, showing a state when the locking mechanism is inoperative.

FIG. 10 is an enlarged view of a main part of the embodiment of the present invention, showing a state in which the front wheel rotation blocking mechanism is not operated.

FIG. 11 is also an enlarged view of a main part, showing a state during operation of the front wheel rotation prevention mechanism.

FIG. 12 is an enlarged cross-sectional view taken along the line GG of FIG. 2, showing a state in which the front wheel turning prevention mechanism is not in operation.

FIG. 13 is an enlarged cross-sectional view taken along the line HH of FIG. 3, showing a state of the front wheel turning prevention mechanism during operation.

FIG. 14 is an operation explanatory view of the front wheel turning prevention mechanism according to the embodiment of the present invention.

FIG. 15 is an operation explanatory view of the front wheel turning prevention mechanism in another embodiment of the present invention.

FIG. 16 is an explanatory view of a coupling receiver of a front wheel turning prevention mechanism according to another embodiment of the present invention.

[Explanation of symbols]

1 Handlebar 2 Front Wheel 3 Front Hawk 4 Headpipe 5 Handlepost 6 Protruding 7 Protruding inward 8 Protruding outward 10 Handlebar mounting part 11 Locking mechanism 13 Lock pin 14 Key fixing part 15 Key protrusion of key fixing part 18 Key ring 19 Key groove 20 1st Lock hole 21 Second lock hole 27 Front wheel rotation blocking mechanism 28 Actuating rod 31 Universal joint 32 Actuating lever 33 Rotating pin 34 Front wheel latch 37 Front wheel turning blocking mechanism 38 Coupling projection 39 Coupling receiving 40 Coupling hole

Claims (11)

[Claims] 1. A handlebar can be rotated by a predetermined angle about an axis intersecting the axis of a head pipe in a vertical plane in the front-rear direction, and can be positioned and fixed at two positions, a steering position and an unsteerable position inclined in the vertical direction. A bicycle parking safety mechanism that is provided on the handle post. 2. The bicycle parking safety mechanism according to claim 1, further comprising a locking mechanism that locks the handlebar by locking the handlebar in a steering position and a non-steering position. 3. A handlebar is provided on a handlepost via a protrusion provided so as to intersect the axis of the head pipe within a vertical plane in the front-rear direction, and the protrusion is an inward protrusion fixed to the handlepost. 3. An outer protrusion that is rotatably mounted on the outer side of the inner protrusion and has a handlebar mounting portion at one end.
Bicycle parking safety mechanism described. 4. The bicycle bicycle parking safety mechanism according to claim 3, wherein the locking mechanism is provided so that the outer protrusion is fixed to the inner protrusion to lock. 5. A locking mechanism is provided with a lock hole protruding inward corresponding to a steering position and a non-controllable position of a handlebar, and a lock pin engaging with the lock hole is provided so as to advance and retreat outward, and a key is attached to the lock pin. Providing a protrusion, a key ring with a key groove is rotatably provided outside the lock pin,
The bicycle parking safety mechanism according to claim 4, wherein the locking of the locking pin is released by rotating the key ring to align the key groove with the key protrusion. 6. A front wheel turning prevention mechanism for preventing the turning of the front wheels by connecting and fixing the handle bar to a head pipe during parking of a bicycle, the front wheel turning prevention mechanism having an upper end in a vertical plane in the front-rear direction with respect to the handle bar. Is attached rotatably around an axis parallel to the axis intersecting the axis of the head pipe, and the lower end is attached to the handle post or the front hawk so that it can move up and down. The bicycle bicycle parking safety mechanism according to any one of claims 1 to 5, further comprising a connecting projection and a connecting bridge provided on the operating rod and the head pipe so as to be engaged with each other. 7. The bicycle bicycle parking safety mechanism according to claim 6, wherein the front wheel turning prevention mechanism is provided with a downwardly L-shaped connecting projection on the operating rod and a connecting receiver having a connecting hole in the head pipe. 8. The bicycle parking safety mechanism according to claim 7, wherein the connecting bridge has a plurality of connecting holes arranged in parallel in a direction around the head pipe. 9. The bicycle parking according to claim 7, wherein the coupling receiver is provided with a protrusion guide portion that guides the tip of the coupling protrusion to the side of the coupling hole in the direction around the head pipe. Wheel safety mechanism. 10. A front wheel rotation preventing mechanism for preventing rotation of a front wheel when parked, wherein the front wheel rotation preventing mechanism has an axis line which intersects an axis line of a head pipe in a vertical plane in a front-rear direction with respect to a handle bar. It is attached so as to be rotatable about parallel axes, and the lower end of the operating rod is provided so as to be vertically movable relative to the handle post or the front fork, and the lower end of the operating rod projects in the direction crossing the front wheels in conjunction with the lowering movement of the operating rod. The bicycle bicycle parking safety mechanism according to any one of claims 1 to 9, which comprises a front wheel latch which is interlockingly connected to the operating rod. 11. The bicycle bicycle parking safety mechanism according to claim 10, wherein the front wheel latch has a middle portion rotatably attached to the front fork and one end rotatably connected to the operating rod.