JPH11301560A - Steering wheel conversion unit for bicycle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow selecting according to the necessity either of temporary locking the steering wheel at a conversion position and of formerly locking the steering wheel at the conversion position, by improving the locking mecha nism of the conversion unit. SOLUTION: A lock ring 5 and a receiving disc member 8 are fixed on a handle stem 2, and a movable disc member 9 is piled up on the receiving disc member. The both members are pressure welded by a bar plate spring 13. A concavo-convex portion 11 is engaged that is arranged at the periphery of both of the disc members. A lock mechanism comprising a slide block member 18 and a rotatable block member 19 is used as a lock mechanism 15 that operates a lock lever 16 having a first lock portion 16a that is engaged with the movable disc member from the side and a second disc member 16b that is engaged with a lock ring at a fitting cylinder. The rotatable block member 19 assembled with the lock lever is turned in two steps by a locking operation of the key. A first locking operation temporarily locks the handle stem and the second locking operation formerly locks it at the conversion position.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is to rotate a handle post rotatably inserted into a fitting tube provided at a front portion of a bicycle body to a turning position parallel to the vehicle body when parking a bicycle. The present invention relates to a bicycle handlebar turning device characterized in that the bicycle handlebar turning device can be locked in an impossible manner or can be arbitrarily locked in a turning position.

[0002]

2. Description of the Related Art In order to reduce the space for a bicycle when placed in a bicycle parking lot, a steering wheel is turned in parallel with the vehicle body, and locking is possible at the turning position. And actual Kaihei 4-818
In addition to Japanese Patent Application Laid-open No. 94-94, Japanese Patent Application Laid-Open No. 9-310
No. 249 publication.

[0003] Also, when a bicycle with a front basket is loaded with heavy luggage and parked, it is possible to prevent the front wheel of the bicycle mounted on the stand from rolling in the eccentric direction of the load and accidentally tipping the bicycle. For example, Japanese Patent Application Laid-Open No. 2-6693 (Japanese Utility Model Application Publication No. 7-17666) discloses a turning device in which the steering wheel can be non-rotatably locked at the turning position.
Publication).

[0004]

Among the above-mentioned prior applications, the former in which the steering wheel is locked at the turning position is provided with an unexpected rotation of the front wheel unless the locking operation is performed each time even if the bicycle is parked. There is a drawback that cannot be prevented, and the latter has an inconvenience in use that even if the handle post is temporarily fixed so that it cannot be rotated, it must be separately locked to prevent theft.

[0005] From the above, it is an object of the present invention to temporarily lock a handle post so that it cannot be rotated at a turning position of a handle and to permanently lock a handle post at a turning position with one device. To provide a bicycle handlebar turning device which is convenient to use.

[0006]

SUMMARY OF THE INVENTION Accordingly, the present invention provides a thrust bearing which is rotatably mounted on a thrust bearing by inserting a handle post having a screw cylinder shaft integrally mounted on the outer periphery thereof into a fitting cylinder provided at a front portion of a vehicle body. Then, a lock ring having a notch for setting the turning position of the handle at the periphery is fitted to the handle post, and the receiving disk member is fitted to the handle post and fixed so as to rotate integrally with the handle post via the screw cylinder shaft. A movable disc member having a latch portion provided on the handle post, which is superimposed on the receiving disc member and is provided at a position adjacent to the notch portion of the lock ring on the periphery thereof, to loosely fit the two discs. The members are tightened to each other by a pressing spring mounted on a screw shaft, and are pressed against the peripheral portions of the two disk members so that the radially formed uneven portions always mesh with each other, while being supported on the outside of the fitting tube. Part At the tip of the lock lever assembled to this locking mechanism, two locking portions are formed at the tip of the locking portion of the movable disk member and the notch of the lock ring, respectively, The first of the lock levers
The first locking operation of the locking mechanism engages the locking portion of the movable disk member with the locking portion of the movable disk member to fix the movable disk member on the fitting cylinder side, and temporarily locks the handle to the turning position. The second locking operation of the locking mechanism engages the second locking portion of the lock lever with the notch of the lock ring, thereby fully locking the handle temporarily locked at the turning position. The present invention provides a bicycle turning and locking device for bicycles.

In the device of the present invention having the above-described configuration, the first locking operation of the locking mechanism causes the first locking portion of the lock lever to engage with the locking portion of the movable disk member, and the fitting cylinder The movable disk member is fixed to the side, and the handle is temporarily locked at the turning position. Next, by the second locking operation of the locking mechanism, the second locking portion of the lock lever is engaged with the cutout portion of the lock ring, so that the handle temporarily locked at the turning position is fully locked. Can be used. Therefore, the user can selectively use the turning device in the temporary locking state and the main locking at the turning position as necessary. The present invention has solved the above-mentioned problems as described above.

In the present invention, the locking mechanism has a first
As a locking mechanism, a cylindrical slide block member that slides in the axial direction when a key is pushed in is provided on the outside, and inside the slide block member, as a second locking mechanism, in the circumferential direction according to the rotation of the key. A rotating block member that rotates, the rotating block member is provided so that a predetermined rotation is possible after the slide block member is slid by the first locking operation, and the rotation of the lock lever is performed in the middle of the rotation. A first locking portion for temporarily locking the handle to the turning position by engaging the locking portion of the first locking portion with the locking portion of the movable disk member; and a second locking portion of the lock lever when the rotating block member is fully rotated. When the handle is locked in the notch of the lock ring and the handle is fully locked at the turning position,
Both the operation of temporarily locking the handle post at the turning position and the operation of locking the handle post do not switch to the locked state until after the operation of pushing in the key, so that the handle may be temporarily locked accidentally. Can be prevented and bicycles can be used safely.

Further, in the present invention, as a slide guide of a slide block member forming a first locking mechanism,
On the inner surface of the lock case, a vertical guide groove is provided along the axial direction, and a guide projection attached to the rotation block member is guided in the guide groove, and as a rotation guide of the rotation block member as the second locking mechanism, By providing a continuous horizontal guide groove at the end of the vertical guide groove and continuously guiding the guide protrusion to the horizontal guide groove, the device of the present invention can be easily assembled with a simple structure. It can be provided at low cost, and the safety function of the device of the present invention can be further improved.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. In FIG. 1, reference numeral 1 denotes a fitting cylinder integrally formed on a front portion of a bicycle body, and 2 denotes a handle post inserted through the fitting cylinder 1 with a screw cylinder shaft 3 integrally mounted on the outer periphery. Is
One of the thrust bearings provided at both ends of the fitting cylinder 1 and rotatably bearing the handle post 2.

Reference numeral 5 denotes a notch 6 in which the turning position of the handle is set at a plurality of positions on the periphery, which is fitted to the handle post 2, the lower end of which is supported by the thrust bearing 4, and the key 7 is fitted inside. The lock ring 8, which is non-rotatably mounted on the screw cylinder shaft 3, is a receiving disk member which is screwed to the screw cylinder shaft 3 and is provided so as to rotate together with the lock ring 5 together with the handle post 2, and 9 The notch 6 of the lock ring 5 on the periphery
The movable disk member is provided with a hook portion 10 at a position vertically adjacent to the handle disk member, and is superimposed on the receiving disk member 8 and loosely fitted on the handle post 2.

The receiving disk member 8 and the movable disk member 9 are provided with irregularities 11 which are formed radially at the peripheral edges joined to each other and are engaged with each other, and a washer mounted in the middle of the receiving disk member 8. 12 and the receiving disk member 8
By means of the pressing spring 13 mounted via the
Under a state in which the handle post 1 is engaged, the handle post 2 is tightened on the handle post 2 so as to always press against each other, and is always provided so as to rotate integrally with the handle post 2.

Reference numeral 14 denotes a thrust bearing 4 outside the fitting cylinder 1.
The support part 15 extending integrally from the handle post 2
And a lock case H provided so as to surround the receiving and movable disk members 8, 9 and the lock ring 5,
This is a locking mechanism installed on one side of the support unit 14. The locking mechanism 15 engages with the first locking portion 16a which engages with the engaging portion 10 of the movable disk member 9 as a temporary locking portion, and engages with the notch portion 6 of the lock ring 5 as the main locking portion. Lock lever 1 provided with two locking portions with second locking portion 16b
6 is assembled.

As shown in FIGS. 2, 3 and 4, the locking mechanism 15 has a cylindrical sliding block member 18 which slides in the axial direction as the key 17 is pushed in, as a first locking mechanism. In addition, a rotary block member 19 that rotates in the circumferential direction in accordance with the rotation of the key 17 is fitted in the slide block member 18 as a second locking mechanism.

The rotary block member 19 has a guide projection 20 projecting in the radial direction fitted on a square shaft 19 'provided at the inner end, and the distal end of the guide projection 20 is locked as shown in FIG. Vertical guide groove 2 formed on the inner surface of case 16
1a and a lateral guide groove 21b formed continuously at the tip thereof
The second locking operation, that is, the rotation at a predetermined angle is not possible unless the slide block member 18 is slid by the first locking operation by being fitted into the guide groove 21 composed of I have.

As shown in FIG. 1, the lock lever 1 is attached to the rotation block member 19 in the middle of its rotation.
6, the first locking portion 16a is engaged with the engaging portion 10 of the movable disc member 9.
A first locking portion 22a for temporarily locking the handle to the turning position by engaging with the second locking portion 16b in front of the rotating block member 19 at the full rotation of the lock block 5 (left hand in the figure). A second locking portion 22b that locks the handle at the turning position by locking the notch 6 is provided.

In the illustrated embodiment, the first locking portion 22a and the second locking portion 22b are
The lock case H moves along the sliding direction of the lever 16 so as to engage with the leaf spring 22d with a protrusion mounted on the upper surface of the lock case H.
And two recesses in the front and rear (left and right in the figure) provided on the inner surface of the. In the figure, reference numeral 22c denotes a non-locking portion.

Next, the operation of the deflecting device having the above-described structure will be described together with the detailed structure. As shown in FIGS. 1 and 2, when the engagement position of the leaf spring with projection 22 d is in the non-locking portion 22 c and the lock lever 16 is retracted to the maximum, the handle post 2 can rotate freely.

As shown in FIG. 3, the key 17 inserted into the locking mechanism 15 is pushed in, and the first locking operation of rotating clockwise in the drawing first moves the slide block member 18 forward together with the rotary block member 19, thereby causing a vertical guide. After the tip of the guide projection 20 reaches the tip of the groove 21a, only the rotating block member 19 rotates, and the lock lever 16 reaches the first locking portion 22a.

At this time, the angular axis 1 of the rotary block member 19 is
The rotation lever 23 having the square hole 23 ′ fitted to the 9 ′ moves forward while compressing the coil-shaped restoring spring 24 spring-loaded on the inner surface of the lock case H, and rotates together with the rotation block member 19, thereby rotating the inner end. Connecting pin 25 and lock lever 16
The lock lever 16 is slid to the left in the drawing through the long hole 26 provided on the side.

When the lock lever 16 reaches the first locking portion 22a, the handle is turned to the turning position by engaging the first locking portion 16a with the locking portion 10 of the movable disk member 9 as described above. Temporary lock. If the direction of the handle is not turned to the turning position during the temporary locking, the handle post and the handle post are pressed against the frictional resistance of the pressing spring 13 and the concave and convex portions 11 of the receiving disk member 8 and the movable disk member 9. 2 can be rotated to the turning position.

Then, if necessary, if the key 17 is further turned clockwise, the lock lever 16 which has reached the second locking portion 22b moves forward as shown in FIG. 2
Is locked in the notch 6 of the lock ring 5, and the handle is fully locked at the turning position. In this fully locked state, the lock ring 5 is non-rotatably fixed to the handle post 2 via the key 7, so that the handle cannot be rotated as in the case of temporary locking, and locking for theft prevention is not possible. it can.

The key 17 is provided with a locking mechanism 15 when unlocked and when temporarily locked, similarly to a conventionally known cylinder lock.
Needless to say, it is locked inside, and can be pulled out and can be carried at the time of the main locking. In the figure, 2
Reference numeral 7 denotes a cover for covering the upper part of the lock case 16, reference numeral 28 denotes an intermediate nut, reference numeral 29 denotes a holder for the front basket, and reference numeral 30 denotes a cap nut.

[0024]

As described above, the turning device of the present invention can be used for temporary locking of the turning position of the steering wheel and for permanent locking with one device, so that it is easier to use than conventional turning devices of this type, and It is convenient for users.

[Brief description of the drawings]

FIG. 1 is a partially cutaway elevation view of an embodiment.

FIG. 2 is a partially cutaway plan view showing an unlocked state.

FIG. 3 is a partially cutaway plan view of a temporarily locked state.

FIG. 4 is a partially cutaway plan view of the locked state.

FIG. 5 is a schematic view showing engagement between a guide groove and a guide projection of the locking mechanism.

[Description of sign]

 DESCRIPTION OF SYMBOLS 1 Fitting cylinder 2 Handle post 3 Screw cylinder shaft 4 Thrust bearing 5 Lock ring 6 Notch 7 Key 8 Receiving disk member 9 Movable disk member 10 Hook portion 11 Irregular portion 12 Washer 13 Presser spring 14 Support plate H Lock case DESCRIPTION OF SYMBOLS 15 Locking mechanism 16 Lock lever 16a 1st locking part 16b 2nd locking part 17 key 18 Slide block member 19 Rotation block member 19 'Square axis 20 Guide protrusion 21 Guide groove 21a Vertical guide groove 21b Horizontal guide groove 22a 1st lock Locking portion 22b Second locking locking portion 22c Non-locking locking portion 22d Leaf spring with projection 23 Rotating lever 24 Restoring spring 25 Connecting pin 26 Slot

Claims (3)

[Claims] 1. A handle post having a screw cylinder shaft integrally mounted on an outer periphery thereof is inserted into a fitting cylinder provided at a front portion of a vehicle body, and is rotatably supported on a thrust bearing. A lock ring provided with a notch for setting the turning position of the handle and a receiving disk member are fitted and fixed so as to rotate integrally with the handle post via the screw cylinder shaft,
Similarly, on the handle post, a movable disk member having a latching portion provided at a position close to the notch portion of the lock ring on the periphery so as to overlap with the receiving disk member is loosely fitted to the two disk members. Are pressed against each other by presser springs mounted on the screw shafts, and are pressed against the peripheral portions of the two disk members so that the radially formed uneven portions always mesh with each other, while the support portions are provided outside the fitting cylinder. And a locking mechanism attached to the locking mechanism. At the tip of the lock lever assembled to the locking mechanism, two locking portions are respectively engaged with the engaging portion of the movable disk member and the cutout portion of the lock ring. A first locking portion of the lock lever is engaged with a locking portion of the movable disk member by a first locking operation of the locking mechanism, and the movable disk member is placed on the fitting cylinder side. Fix and temporarily lock the handle to the turning position, By the second locking operation of the locking mechanism, the second locking portion of the lock lever is engaged with the cutout portion of the lock ring, and the handle temporarily locked at the turning position is fully locked. Bicycle steering device. 2. The lock mechanism according to claim 1, further comprising a cylindrical slide block member that slides in an axial direction as a key is pushed in as a first lock mechanism, and a slide block member that slides in the axial direction as a key is inserted. On the inside, a rotation block member that rotates in the circumferential direction according to the rotation of the key is provided, and the rotation block member is provided so as to allow predetermined rotation after sliding of the slide block member by a first locking operation, and A temporary locking portion for engaging the first locking portion of the lock lever with a locking portion of the movable disk member to lock the handle at the turning position in the middle of the rotation, and A main locking portion for performing a main locking operation of locking the handle at the turning position by engaging a second locking portion of the lock lever with the notch of the lock ring. The bicycle turning device according to claim 1. 3. The locking mechanism includes a vertical guide groove provided as a slide guide for the slide block member along an axial direction on an inner surface of a lock case and guiding a guide protrusion attached to the rotary block member. The bicycle handle according to claim 2, wherein the guide protrusion is guided to a horizontal guide groove provided continuously at a tip of the vertical guide groove as a rotation guide of the rotary block member. Turning device.