JPH0243838Y2 - - Google Patents

Description

[Detailed explanation of the invention] A. Purpose of the invention a. Industrial application field This invention relates to an improvement of a handlebar post for a bicycle, and relates to a handlebar post that can easily adjust the front and rear and up and down positions of the handlebar. It is.

b. Prior Art Most conventional general handlebar posts have a forward projecting portion integrally formed at the top of the post portion, and a horizontal hole for passing the handlebar through at the front end of the projecting portion. . In some cases, the protruding part of the post part is square in longitudinal section and has no horizontal hole for passing the bar through, and a separate member with a horizontal hole for passing the bar is attached to the band part of the protruding part. There is something that fixes the cloak.

C. Problems that the invention aims to solve In the above conventional bicycle handle post,
If the post part has a protruding part with a horizontal hole for passing the bar through, the height of the handlebar can be adjusted to the desired height by raising or lowering the post part within the Hawk stem. However, since the front and rear lengths of the protrusion remain unchanged, it is not possible to obtain an optimal posture depending on the size of the occupant's upper limbs. If you want to optimize the front-to-back position of the bar, you'll need to replace it with a different handle post with a different length of protrusion.

On the other hand, in the case of a member having a horizontal hole for passing a bar in the protruding part and fixed to the jacket with a band part, the front and rear positions can be adjusted by loosening the band part and sliding it.
However, since the protruding part has a square cross section to prevent the band from rotating, it is necessary to manufacture a square pipe for the protruding part in frames and handles, etc., which are mostly round pipes, making it difficult to manufacture. It gets complicated.
Also, if you want to adjust only the height while leaving the front and back positions unchanged, if you pull up the handle post, it will move closer to you by the amount of inclination, causing the position to shift. Therefore, it is conceivable to change the member with the horizontal hole for bar insertion from downward to upward, but this has problems such as the need to pull out the member from the protrusion and put it back in the upward position. .

The present invention is an attempt to solve the above-mentioned problems of conventional bicycle handlebar posts. In other words, the aim is to create a bicycle that allows the rider to easily and quickly adjust the front and back position and height of the handlebar to provide an optimal posture, is easy to manufacture without using square pipes, and has a good appearance. The purpose is to provide a handle post.

B. Structure of the invention a. Means for solving problems In the bicycle handle post according to the invention, the forward protruding part 2 of the upper part of the post part 1 is formed into a cylinder having a deep adjustment hole 3 at the front opening. On the other hand, a bar support member 4 is formed, which has a bar insertion horizontal hole 5 in the lower front part and an adjustment cylinder part 6 in the rear part so as to be slidable and rotatable within the adjustment hole 3. At the same time,
A tightening threaded rod 7 is inserted into the cylindrical portion 6 from the front, a locking screw 8 is screwed onto the rear end, and the bar support member 4 inserted into the protruding portion 2 is tightened and fixed by the screw 8. This is what I did.

In the above configuration, the length of the protruding part 2 and the length of the adjusting cylinder part 6 are such that the bar support member 4 can be slid back and forth by about 30 mm and can be securely tightened and fixed. Locking hole 8 at the rear end of the adjustment cylinder part 6
It may be a round truncated cone shape as shown in FIG. 1, or a raised shape as shown in FIG. Bar support member 4
It is preferable that the inner diameter of the adjustment hole 3 of the protrusion 2 be the same as the inner diameter of the Hawk stem 9 so that a ready-made handle post can be shortened and used. Further, the post part 1 and the protruding part 2 may be integrally formed, for example, made of aluminum alloy.
2 may be fixed.

In the figure, 10 is a handlebar post fixing hole, 11 is a pulling rod thereof, and 12 is a handlebar.

b. Function The usage conditions of this bicycle handle post are as follows. First, the height of the handlebar 12 is adjusted by adjusting the length of insertion of the post portion 1 of the handlebar post into the Hawk stem 9, which is the same as in the conventional case. Next, the adjustment of the front and rear positions of the handlebar 12 is performed using the bar support member 4.
All that is required is to loosen the locking pad 8 by turning the front tightening threaded rod 7, and the adjustment cylindrical portion 6 of the bar support member 4 becomes free within the adjustment hole 3 of the protruding portion 2. Then, the support member 4 is pulled out or pushed in to determine the desired front and back position, and the tightening threaded rod 7 is turned to tighten the thin plate 8. As a result, the adjustment tube 6 is fixed in the adjustment hole 3, and the position of the handlebar 12 supported in the bar insertion horizontal hole 5 at the front lower part of the bar support member 4 is adjusted to the desired longitudinal position. That means that.

Furthermore, if you just want to make the handlebar 12 higher without changing its front-rear position, you can loosen the thinning 8 by turning the tightening screw rod 7 in the same way as above, and free the adjustment cylinder part 6 of the bar support member 4. Bye. The adjustment cylinder part 6 is now rotatable, so turn it 180 degrees so that the bar insertion horizontal hole 5 in the lower front part is at the upper front part, and then turn the tightening screw rod 7 to All you have to do is tighten it. Conversely, the handlebar 12, which is located at a high position, can be lowered, and by doing so, the height of the handlebar 12 can be changed by about 4 to 6 cm.

C. Effects of the invention As is clear from the above, the bicycle handle post of the invention has the following effects. In other words, by loosening the tightening threaded rod, the bar support member can slide and rotate, which allows the handlebar to be placed in the desired front-rear position, and the height can be adjusted without changing the front-rear position. This means that you can change the position to find the best fit. In addition, unlike conventional similar products, it is easy to manufacture because it does not use square pipes, and the bar support member can also be used by shortening a ready-made handle post, which can reduce costs. It is.

[Brief explanation of the drawing]

The figures show an embodiment of the present invention, with FIG. 1 being a partially cutaway side view and FIG. 2 being a partially cutaway side view of another embodiment. Drawing code 1...Post part, 2...Protrusion part, 3
...Adjustment hole, 4...Bar support member, 5...Horizontal hole for bar insertion, 6...Adjustment cylinder part, 7...Threaded tightening rod, 8...Locking thin.

Claims (1)

[Scope of utility model registration request] The forward protruding part 2 at the top of the post part 1 is formed into a cylindrical shape with a deep adjustment hole 3 at the front opening, and a horizontal hole 5 for bar insertion at the lower front part, and a horizontal hole 5 at the rear part. A bar support member 4 is formed which has an adjustment cylindrical portion 6 that is slidable and rotatable within the adjustment hole 3, and a tightening threaded rod 7 is inserted into the cylindrical portion 6 from the front and engaged with the rear end. By screwing the stopper 8,
The bar support member 4 inserted into the protrusion 2 is thinned by 8
A bicycle handle post that can be tightened and fixed.