JPH0133430Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a safe and inexpensive handle folding mechanism for use in folding bicycles.

Conventional Structures and Their Problems Conventionally, in many cases of folding bicycles, the bicycle body is folded and the handlebars are also folded to make the whole bicycle compact. A method for folding the handle is to place the handle at the mounting portion of the handle post, loosen a mounting screw, rotate the handle, and fold the handle. A conventional handle is shown in FIGS. 1 and 2, and a handle post is shown in FIG.

Reference numeral 1 denotes a handlebar, and grips 2, 2 are attached to the ends thereof. The entire handlebar is curved in a U-shape, and the center part 3 of the handlebar is thicker in diameter than the other parts, and the entire circumference of this part is knurled to prevent it from rotating easily when tightened. I have to.

Reference numeral 4 denotes a handlebar post, which has a handlebar fitting part 5 and ears 6, 6 for tightening the fitting part at its front part.

7 is a fastener provided on the ear piece and has a handle 8. Note that the length of the handle 8 of the fastener 7 is made long so that the fastener 7 can be tightened with bare hands without using a separate tool.

As described above, in the configuration in which the center part 3 of the handlebar 1 is fitted into the fitting part 5 of the post 4 and tightened, the tightening force may be small when tightened by an ordinary person, and the fitting The inner shape of the portion 5 also changes from a perfect circle depending on the tightening condition, and does not necessarily match the shape of the fixing portion 3. Furthermore, since the fitting part 5 has a U-shape with one side open, all of the pressure applied by the fastener 7 is not applied to the pushing force of the fitting part 5, but is used to deform the post 4, which is a rigid body. The handle was not securely fixed, and there was a risk that it would rotate. Furthermore, since the fastener 7 and the handle 8 protrude forward, the appearance was not very desirable.

Purpose of the invention The present invention solves the above-mentioned conventional drawbacks.
To provide a structure that securely presses a handle fixing part, prevents the handle from rotating easily, and is easy to operate.

Structure of the Invention In order to achieve the above object, the handle device of the present invention has a fixed part sandwiched between upper and lower split-type posts, connecting parts of the upper and lower posts are provided at the front and rear of the fixed part, and a fastener is located at the rear. , to ensure fixation, and
The structure is designed to be easy to operate.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

In Figures 4 and 5, 10 is a handlebar, 11 is a grip, and 12 is a fixed part. The fixed part has a larger diameter than other parts, and the entire circumference of this part is knurled. This prevents it from rotating easily when tightened. Reference numeral 13 denotes a stopper, which is U-shaped and is fixed to the handle by sandwiching the fixing part 12, and is made of a steel wire rod having a circular cross section. 14 is a post, and 15 is an upper post, which sandwich and fix the fixing part 12 between them. Reference numeral 16 is a pipe portion that connects to the frame head portion of the bicycle. Post 14 and upper post 15
has holes 17 and 18 at the front and holes 19 and 20 at the rear, and are connected on the front side by a connecting rod 21 and on the rear side by a connecting tool 22, respectively.

The diameter of the connector 22 is smaller than the diameter of the holes 19 and 20, and a fastener 24 having a handle 23 is screwed into the threaded portion at the tip thereof. and connector 2
The contact portion with the post 14 of No. 2 has a flange shape and a curved surface. Therefore, when the fastener 24 is rotated and tightened by the handle 23, the coupling tool 22 is attached to the post 14.
The tension of the fastener 24 is always applied perpendicularly to the post without prying the post.

On the other hand, the front connecting portion of the upper post has a chevron-shaped projection 25 on its lower surface, the tip of which contacts the upper surface of the post 14, optimizing the position of the upper post. The connecting rod 21 is smaller than the diameter of the hole 17, the threaded portion of the tip is screwed into the threaded portion of the hole 18, and the contact surface with the upper post is provided with a curved surface so that the tension is efficiently converted into tension. There is. The connecting rod 21 can be screwed into a predetermined position with almost no tightening torque, and in this state, a locking agent is applied to the threaded portion to fix it.

As described above, in the front connecting portion between the post and the upper pot, it is sufficient that the upper post can be moved slightly away from the post on the rear side, and the structure is not limited to the above structure.

The stopper 13 restricts the rotation of the handle by coming into contact with the post or the connector, and also prevents the fixing part 12 from coming off from the post due to being shifted left and right by being clamped in a U-shape. When rotating the handle during folding, it is sufficient to loosen the fastener 24 and rotate it in the opposite direction to the direction in which the stopper 13 abuts.

Effects of the invention As mentioned above, in this invention, the post is divided into upper and lower parts, and the rear part of the two connecting parts is used as the tightening part, so the corresponding part of the post is shaped to match the diameter of the fixed part of the handle. The inner surface shape does not change even when tightened, so the handle is securely fixed.
In addition, by tightening a separate connector from the post through a hole with a larger diameter than the connector from the post side, the positional relationship between the upper post and the post will shift, and even if the screw tightening angle is slightly off, the connector will fall inside the hole. This allows for efficient tension transmission.

Since the fastener can be placed at the rear, it is halfway between the front and the pipe section, so it fits well without coming out to the front.

Furthermore, since the stopper is divided into upper and lower parts, the size of the stopper is not restricted, and the stopper can have a thickness sufficient for strength and an appropriate shape to prevent left and right shifting when the handle is rotated.

[Brief explanation of the drawing]

FIG. 1 is a front view showing a conventional handle, FIG. 2 is a side view thereof, FIG. 3 is a side view showing a handle post, and FIG. 4 is a front view showing a handle of the present invention.
FIG. 5 is a side view of the handle attached to the post, and FIG. 6 is a longitudinal sectional view of the fixed portion of the handle. 10...handle, 12...fixing part, 13...
Stopper, 14...post, 15...upper post,
17-20... hole, 21... connecting rod, 22... connecting tool, 24... tightening tool.

Claims (1)

[Scope of utility model registration request] An upper post and a post that have holes in the front and rear of the handle and are divided into two and fix the central part of the handle, a connecting rod that connects the front holes, a connector that connects the rear holes, and a connector that It is equipped with a fastener and a handle to be screwed in, and a substantially U-shaped stopper fixed to the handle on the left and right sides across the center of the handle. The connecting tool is thinner than the hole in the post, has a flange shape at one end, and a threaded section at the other end, and is inserted from the bottom of the post and tightened with a fastener on the top surface of the upper post to fix it. A handle device designed to