JPH08324479A - Folding handle locking mechanism for bicycle - Google Patents

Abstract

PURPOSE: To provide a lock mechanism by which folding of a handle of a bicycle and extending and contracting of a handle post can be locked, and the lock can be released by a single lever operation. CONSTITUTION: A handle post 1 is provided with a structure in which an inner post 1b is fitted in an outer post 1a so as to be housed and can be locked by a piece 6. A handle bar 5 is pivotally attached on the upper end of the inner post 1b through a rotational hinge so as to be rotated and inclined sideways, the inner post 1b can be locked and unlocked by the piece 6 through an interlocking mechanism of links 13, 14 and a rod 16 by a release lever 7 provided on the upper end of the inner post 1b so as to be vertically turned, and a toggle joint 8 for locking the handle bar 5 to the inner post 1b in the normal attitude is provided. A protrusion 9 for releasing lock of the toggle joint 8 is projectingly provided on the outer post 1a.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lock mechanism capable of locking and releasing a folding handle for a bicycle by operating one lever.

[0002]

2. Description of the Related Art Folding handle posts are disclosed in Japanese Utility Model Publication Nos. 60-44891 and 60-44892 for facilitating the carrying of a bicycle and storing it in a small space. As shown in FIG. 8 as a mechanism for folding the handle post, the handle post is divided into a lower post 20a and an upper post 20b, and the split portion is connected by a hinge 21 and a lever type in which a bendable lever 22 is connected. As shown by 97, a lock pin type in which the connecting portion is locked by the pin 23 is adopted, and as a mechanism for locking the expanding and contracting handle post, as shown in FIG.
As shown in FIG. 11, the inner post 41 inside the outer post 40 is attached to the screw shaft 42 and the lever 4 so that the circumference of the outer post 40 is fixed.
3 and the quick release type that is loosened by 3 are used.

[0003]

In the above conventional structure, the lock and lock release for folding the handle post and the lock and lock release for expansion and contraction of the handle post are separate operations. There are many problems that cannot be easily and quickly folded.

In view of the above conventional problems, an object of the present invention is to
It is an object of the present invention to provide a lock mechanism capable of locking and releasing the handle folding and the handle post expansion and contraction by one lever operation.

[0005]

The gist of the present invention for achieving the above object is to provide a handle post including an outer post and an inner post that is fitted in the outer post and is locked by a us. A handlebar pivotally attached to an upper end of the inner post so as to be capable of being rotated and tilted laterally with respect to the handlepost via a rotating hinge.
A release lever, which is provided at the upper end of the inner post so as to be rotatable in the vertical direction, and cooperates with the us via a link and rod linking mechanism, connects the handlebar and the inner post, and connects the handlebar to a regular Toggle joint that locks in a posture, and protruding from the outer post,
And a protrusion that abuts on the toggle joint and unlocks the toggle joint when the inner post is stored.

Further, in the above structure, the striker projecting downward on the inner post side and the striker on the outer post side when the inner post is housed are fitted to each other to restrain the rotation and movement of the inner post in the extending direction. And a catch stem for holding the handlebar which is tilted laterally at the upper end of the inner post.

[0007]

With the above configuration, the inner post is put into a free state in which it can be stored in the outer post by unlocking the mouse by operating the release lever, and the toggle joint projects into the outer post by lowering and storing the inner post. The toggle bar is unlocked by abutting on the provided protrusion, which allows the handle bar to be rotated and tilted laterally with respect to the handle post.

Further, when the inner post is lowered and stored in the outer post, the striker fits into the receiving member to restrain the rotation and movement of the inner post in the extension direction, and catches when the handlebar is tilted sideways. The stem holds the handlebar so that it can be folded and stored.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. In FIGS. 1 and 2, reference numeral 1 denotes a handle post, which is composed of an outer post 1a and an inner post 1b fitted in the outer post 1a so as to be capable of expanding and contracting and locked by a us 6. The inner post 1
A handle bar 5 is pivotally attached to the upper end of b via a rotary hinge so as to be able to be tilted laterally with respect to the handle post 1.

A specific structure in which the handlebar 5 can be rotated and tilted laterally with respect to the handle post 1 is that a lower stem 2 is fixed to the upper end of the inner post 1b, and an upper stem 3 is attached to the lower stem 2 by a rotating hinge. Rotatably and pivotally attached to the upper stem 3 by a handlebar 5
Is a fixed configuration.

The structure of the lock and lock release mechanism for the inner post 1b and the handlebar 5 will be described. A release lever 7 having a claw portion 7a on the upper end side of the lower stem 2 is provided so as to be constantly urged downward by a spring 12 so as to be rotatable in the vertical direction, and is locked between the lower stem 2 and the upper stem 3. The toggle joint 8 is attached via the rod 8a.

Further, a first link 13 and a second link 14 which can be bent and extended vertically by a connecting pin 17 near the claw portion 7a of the release lever 7 of the lower stem 2, and one end of which is connected to the second link 14. Bell crank 15 is provided, and the other end of the bell crank 15 is
And a rod 16 connected to the outer post 1a, and a protrusion 9 is provided on the outside of the upper end of the outer post 1a so as to abut the toggle joint 8 and unlock the toggle joint 8 when the inner post 1b is retracted. .

Further, when the inner post 1b is lowered and stored in the outer post 1a, in order to restrain the rotation and movement of the inner post 1b in the extension direction, the lower stem 2
The striker 10 is projected downward to the outer post 1
A heart cam-shaped receiving member 11 to which the striker 10 is fitted is provided outside the upper end of a.

Further, the lower stem 2 is provided with a catch stem 18 which holds the handle bar 5 when the handle bar 5 is rotated and tilted sideways and locks the folded and stored state.

In the above structure, the release lever 7 is pulled downward by the spring 12 in the locked state of the inner post 1b and the handlebar 5, that is, in the normal use state, as shown in FIGS. The claw portion 7a of 7 pushes down the connecting pin 17 of the first link 13 and the second link 14, pivots the bell crank 15 counterclockwise and pulls up the uss 6 via the lock rod 16, and the inner post 1b becomes the outer post. The handlebar 5 is locked by being pulled out from the la 1 by the uss 6, and the handlebar 5 pulls the upper stem 3 to the lower stem 2 by the toggle joint 8 as shown in FIGS. 2 and 5.

As shown in FIG. 4, the lock release of the inner post 1b and the handle bar 5 is performed by the release lever 7
Lift up. As a result, the claw portion 7a of the release lever 7 lifts the connecting pin 17 of the first link 13 and the second link 14 to raise the connecting point of the first link 13 and the second link 14, and the second link 14 moves to the bell. Crank 15
Rotate clockwise to insert the screw 6 through the lock rod 16.
Push down to unlock the inner post 1b. By unlocking the inner post 1b, the inner post 1b can be housed in the outer post 1a, and the inner post 1b is lowered and pushed into the outer post 1a for housing.

As shown in FIG. 6, the inner post 1b.
The lower part of the toggle joint 8 comes into contact with the protrusion 9 projecting outside the upper end portion of the outer post 1a by the storage operation by lowering, and the toggle joint 8 is unlocked to unlock the handlebar 5. As a result, as shown in FIG. 7, the handlebar 5 can be tilted laterally about the rotary hinge 4 as a fulcrum.

The striker 10 projecting downward on the lower stem 2 by the retracting operation of the inner post 1b is fitted into the heart cam-shaped receiving member 11 provided outside the upper end of the outer post 1a, and the inner post 1b is fitted. 1b
Constrain rotation and movement in the extension direction. In addition, the handlebar 5 tilted laterally with the rotary hinge 4 as a fulcrum.
Is held by the catch stem 18 provided on the lower stem 2 and locks the folded and stored state.

When the inner post 1b is housed and the handlebar 5 is laterally rotated and folded (folded back) to the normal use state (returned), the toggle joint is in an obliquely upward posture as shown in FIG. When 8 is pushed down once, the striker 10 fitted into the heart cam-shaped receiving member 11 is unlocked. When the inner joint 1b is pulled up by gripping the toggle joint 8 and the handlebar 5 is rotated in the horizontal posture, the toggle joint 8 automatically locks the handlebar 5 in a normal state and the uss 6 is pulled up. Inner post 1b as shown in 3
Then, the rotating and sliding parts are deployed in the normal use condition as shown in FIG.

[0020]

As described above, according to the present invention, the inner post can be housed and deployed in the outer post by operating one position of the release lever. Since the toggle joint that locks the handlebar that can be rotated and tilted can be locked and unlocked, the number of operation points and the number of operations in the folding and normal use of the handle section are greatly reduced, making it easy and quick. Folding and normal use can be achieved.

When the inner post is housed in the outer post, the striker is fitted to the receiving member to restrain the rotation and movement of the inner post in the extension direction, and the handlebar tilted sideways to the catch stem. Since it is held, it has an advantage of reliably and safely maintaining the folded state of the handle portion.

[Brief description of drawings]

FIG. 1 is a perspective view of the present invention.

FIG. 2 is a sectional front view of the present invention.

FIG. 3 is a sectional view showing a locked state of the inner post locking mechanism.

FIG. 4 is a sectional view showing an unlocked state of the inner post locking mechanism.

FIG. 5 is a front view showing a locked state of a lock mechanism of a handlebar.

FIG. 6 is a front view showing an unlocked state of a lock mechanism of a handlebar.

FIG. 7 is a front view showing a state in which the handlebar is rotated and tilted to the side.

FIG. 8 is an explanatory view of a lever type folding mechanism of a conventional handle post.

FIG. 9 is an explanatory view of a lock pin type folding mechanism of a conventional handle post.

FIG. 10 is an explanatory view of a bolt fixing type mechanism of a conventional handle post.

FIG. 11 is an explanatory view of a quick release type of a conventional handle post.

[Explanation of reference symbols] 1 handle post 1a outer post 1b inner post 2 lower stem 3 upper stem 4 rotating hinge 5 handle bar 6 us 7 release lever 8 toggle joint 9 convex portion 10 striker 11 receiving member 12 spring 13 first link 14 second link 15 Bell crank 16 Lock rod 17 Connecting pin 18 Catch stem

Claims (2)

[Claims] 1. A handle post comprising an outer post and an inner post that is fitted in the outer post so as to be retractable and locked by a us, and a side of the handle that is located at the upper end of the inner post with respect to the handle post via a rotary hinge. A handlebar pivotally pivoted in one direction, a release lever provided at the upper end of the inner post so as to be vertically rotatable, and a release lever that cooperates with the us via a link and rod linking mechanism; And a toggle joint that connects the inner post to the handlebar and locks the handlebar in a regular posture, and a protrusion that projects from the outer post and that abuts the toggle joint when the inner post is retracted to unlock the toggle joint. A folding handle lock mechanism for a bicycle, which is equipped with an up and down. 2. A striker projecting downwardly on the inner post side, and a receiving member on the outer post side for restraining the inner post from rotating and moving in the extending direction by fitting the striker when the inner post is stored, The foldable handlebar locking mechanism for a bicycle according to claim 1, further comprising a catch stem that holds a handlebar that is rotated and tilted sideways at an upper end of the inner post.