JPS5916581Y2 - Brakes on bicycles, etc. - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to the improvement of brake shoes for bicycles, etc. When attaching this brake shoe to the tip of the brake arm of a caliper brake, it can be attached according to the size of the rim diameter ( This is what it aims to do.

Conventionally, a pair of brake arms of a caliper brake have a vertically elongated hole or a three-pronged section formed at each end, and the mounting bolt of the brake shoe can be adjusted by sliding vertically within the vertical hole or the groove of the three-pronged section. In the past, brake shoes were installed to fit large or small diameter rims, but this required a vertical hole or forked part to be machined at the end of the brake arm. The work was tedious.

Furthermore, the machining of the elongated hole or the three-pronged portion makes the brake arm susceptible to deflection, and especially when the brake shoe is attached to the tip end of the brake arm, the deflection is large and there is a problem in that the braking force of the brake shoe is impaired.

The present invention improves the above-mentioned drawbacks of the conventional brake arm, and without forming a special vertical hole or bifurcated part at the tip of the brake arm, it is possible to easily adjust the diameter of the rim by simply machining a round hole. The aim is to provide a new brake shoe that allows the brake shoe to be installed in accordance with the
The feature is that the shoe that is pressed against the rim of the wheel is held between the shoe holders, and the mounting bolt is inserted into the shoe holder through the insertion hole opened in the shoe holder so that the head is located on the shoe side. In a brake device for a bicycle or the like, in which the shoe holder is inserted into the brake arm and fixed to the brake arm by tightening the shoe holder between the head of the mounting bolt and a nut screwed onto the mounting bolt, the head of the mounting bolt is inserted into the brake arm. The insertion hole is formed to be elongated in the circumferential direction of the rim, and the insertion hole is elongated so that the mounting bolt can move in the radial direction of the rim, and the head of the mounting bolt is inserted in the radial direction of the rim between the shoe and the shoe holder. The point is that a space is provided to allow sliding.

Hereinafter, an embodiment of the present invention will be described based on the drawings. One embodiment is shown in FIGS. It has a braking surface 2 on the side and a groove 4 on the rectangular back surface 3.
is formed in the short side direction a.

Reference numeral 5 designates a boat-shaped shoe holder, and an insertion hole 6 is formed on the rectangular bottom surface 5a of the holder 5 so as to become longer in the direction of its short side.

Shoe mounting holes 1 to 7 are embedded and fixed in this shoe holder 5 so that the back surface 3 side of the shoe 1 is aligned with the direction a of the groove 4 and the direction b of the insertion hole 6, and has a head 7a. The head 7a is fixed to the concave groove 4, and a,
The shoe mounting bolt 7 is fitted so as to be slidable in the direction a), and the shoe mounting bolt 7 is inserted into the insertion hole 6, so that the shoe mounting bolt 7 is mounted on the bottom surface of the shoe holder 5 so as to be movable in the direction a. .

8 is a caliper brake, 9 is a pair of brake arms of the caliper brake 8, 10 is a round shoe mounting hole formed in a part of the tip of the brake arm 9, and 11 is a rim.

To attach the brake shoes to each tip of the pair of arms 9, 9 of the caliper brake 8, insert the mounting bolt 7 into the shoe mounting hole 10 from the inside of the arm 9, and then
Adjust the posture so that the long side direction C is parallel to the circumferential direction of the rim 11 and the short side direction a is the same direction as the radial direction e of the rim 11, and then It is attached by tightening a cap nut 12 to the threaded end of the arm 9 that protrudes outside. At this time, if the diameter of the rim 11 is large or small, the shoe 1 and the shoe holder 5 must be tightened together with the mounting bolt 7. It is sufficient to move the shaft up and down in the e direction as a support shaft, and after determining the position, tighten the nut 12.

In this way, when the shoe mounting bolt 7 is attached to the rear side of the shoe 1 so that it can be moved and adjusted in the same direction a, l) as the rim radial direction e, when attaching this brake shoe to the tip of the brake arm 9, the rim Even when the diameter of the shoe 11 is large or small, or an intermediate diameter, the shoe 1 can be adjusted to match the diameter of the rim 11 by simply moving the shoe 1 together with the shoe holder 5 in the direction e before tightening the nut 12. The mounting condition can be obtained, and according to this, the shoe mounting hole 10 can be simply a round hole, and the tip of the brake arm 9 can be easily machined.

5 and 6 show other embodiments of the concave groove of the brake shoe, in which a groove plate 13 made of metal and having a groove shape in cross section is attached to the shoe 1.
The head 7a of the shoe mounting bolt 7 can be slid in the groove of the groove plate 13 in the direction a,
It is also housed in a rotating lock.

When the groove 4 of the shoe 1 is configured in this manner, the shoe mounting bolt 7 can be reliably prevented from rotating within the groove 4.

FIG. 7 shows another embodiment of the brake shoe, in which a groove 4 is formed on the bottom surface of the shoe holder 5 for guiding the head 7a of the shoe mounting bolt 7 in the direction e when the shoe mounting bolt 7 is moved in the direction e. In addition, the insertion hole 6 is formed in the groove 4 itself.

When the brake shoe is configured like this, shoe 1
There is an effect that it is not necessary to form a groove in itself, and other effects can be obtained in the same manner as in the above embodiment.

In the embodiment, the groove 4 forms a space between the shoe 1 and the shoe holder 5 in which the head 7a of the mounting bolt 7 can slide in the radial direction of the rim 11.

The brake system of the present invention can also be applied to brake devices for motorcycles and other two-wheeled vehicles other than bicycles.

According to the present invention, the insertion hole 6 is formed to be elongated so that the mounting bolt 7 can move in the radial direction of the rim 11, and the head 7a of the mounting bolt 7 is inserted between the shoe 1 and the shoe holder 5 in the radial direction of the rim 11. Since it has a space that allows it to slide in the direction,
The mounting bolt 7 can be moved and adjusted in the radial direction of the rim 11 relative to the shoe holder 5, and by this adjustment, the mounting position of the shoe 1 can be adjusted to match the diameter of the rim 11.

Therefore, the brake arm 9 only needs to be provided with a round mounting hole into which the mounting bolt 7 can be inserted, making the machining of the brake arm 9 very simple. It will no longer become dull.

That is, since the shoe holder 5 does not require as strong a rigidity as the brake arm 9 and is made of a thinner material than the brake arm 9, forming the insertion hole 6 elongated means that the brake arm 9 has a long hole or a thin material. Processing is simpler than forming bifurcated portions, and manufacturing is easier as a whole.

Further, the shoe holder 5 is tightened to the brake arm 9 between the head 7a of the mounting bolt 7 and the nut 12, and when the shoe 1 is pressed against the rim 11, the shoe holder 5 is pressed by the brake arm 9. Even if the rigidity of the holder 5 is weak, as long as the brake arm 9 does not bend, the braking force will not be reduced. Therefore, even if the insertion hole 6 is formed long, the braking force of the brake shoe will not be impaired.

Furthermore, since the head 7a of the mounting bolt 7 is formed to be elongated in the circumferential direction of the rim 11, the mounting bolt 1-7 can be moved and adjusted over approximately the entire length of the insertion hole 6, and the adjustment width of the mounting position of the shoe 1 can be adjusted. can be made as large as possible, and sufficient tightening force can be obtained between the head 7a and the nut 12.

[Brief explanation of the drawings] Figure 1 shows the caliper equipped with the brake shoes of the present invention.
A front view of the brake, FIG. 2 is a sectional view of the brake shoe taken in the direction a, FIG. 3 is a sectional view of the brake shoe taken in the direction C, FIG. 4 is a rear view of the brake shoe, and FIG. The figure is a sectional view showing an example of another brake shoe.
6 is a rear view of the shoe shown in FIG. 5 with the shoe holder removed, and FIG. 7 is a sectional view showing still another embodiment of the brake shoe. 1... shoe, 11... rim, 7...
...Shoe mounting bolt, e...Rim radial direction.

Claims (1)

[Scope of utility model registration request] The shoe 1 pressed against the rim 11 of the wheel is held by the shoe holder 5, and the mounting bolt 7 is inserted into the shoe holder through the insertion hole 6 opened in the shoe holder 5 so that the head 7a is located on the shoe 1 side. 5 and screwed into the head 7a of this mounting bolt 7 and the mounting bolt 7.
In a brake device for a bicycle, etc., in which the shoe holder 5 is tightened and fixed to the brake arm 9 between the shoe holder 5 and the brake arm 9, the head 7a of the mounting bolt 7 is formed elongated in the circumferential direction of the rim 11, and the head 7a of the mounting bolt 7 is formed to be elongated in the circumferential direction of the rim 11, and 6 to mounting bolt 7
is formed to be elongated so that it can move in the radial direction of the rim 11,
A brake shoe for a bicycle, etc., characterized in that a space is provided between the shoe 1 and the shoe holder 5 to allow the head 7a of the mounting bolt 7 to slide in the radial direction of the rim 11.