JPH04110290A - Brake device for bicycle and brake application - Google Patents

Abstract

PURPOSE:To carry out all the brake application by one hand operation, by allowing a rear wheel rim brake to turn by a certain angle, together with rear wheels, and then to pull a wire for front wheels, thus providing a delay in time for the brake application for front wheels. CONSTITUTION:The installation tool 22 of a fixing tool 30 is installed so as to perform a pendulum movement, having a pin as revolution center 24. The brake rubber 45 of a rim brake 40 is arranged in the state where a pair of rubber pieces 47 are bent fanwise and has a length nearly twice the length of the conventional article. A device 10 is fixed on an erection pipe 53 by the fixing tool 30. When a brake bar is gripped. The rubber 45 is operated through a wire 12, and presses the rim 64 of a rear wheel from both sides. In this case, the rubber piece on the upper side which is opposed in parallel to the rim among a pair of rubber pieces 47 carries out brake action mainly. Then, the whole of the brake 40 revolves, together with the rear wheels, and shifts. Then, the rubber piece 47 on the underside carries out brake action mainly. The shift range is equal to the angle in which the installation tool 22 performs a pendulum shift. Since a wire 15 as connecting means 14 shifts, front wheels are brake- applied.

Description

DETAILED DESCRIPTION OF THE INVENTION OBJECT OF THE INVENTION 1 (Industrial Application Field) The present invention relates to a bicycle brake device and its brake which are improved so that the front and rear wheel brakes can be operated with one hand.

(Prior art) -A. Brake devices for bicycles mainly use friction force to stop the rotation of the wheels, with hunt brakes being used for the rear wheels and rim brakes being used for the front wheels. .

Bunt brakes for the rear wheels have a large braking force, as they utilize the frictional force of a drum fixed to the huffing fence and a band-shaped hunt wrapped around it and pulled.

A rim brake for the front wheel uses a hard rubber piece pressed against the rim that forms the wheel to stop the wheel using its frictional force.

These brakes are located at both ends of the bicycle's handlebars.
A flake lever that operates using a lever is provided.1. Squeeze the second flake lever. The two are connected to each other so that the wire is pulled and the brake is activated. On the right side of the handle, there is a flake lever that operates the rim brake for the 111 wheels, and on the left side of the handle, there is a brake lever that operates the hunt brake for the rear wheels. be.

(Problem to be solved by the invention) According to the bicycle brake device having such a configuration,
When braking both the front and rear wheels, both hands are used to grip each brake lever. If these brake devices are properly adjusted and operate normally, there will be no problem, but if either one is malfunctioning, the brakes will not only be inefficient, but also cause accidents.

For example, if the front brakes are too strong and apply too quickly, a forward leaning force will be applied that causes the rear wheels to lift, causing problems such as the vehicle body tending to fall over and becoming unstable when the steering wheel is turned.

As a bicycle brake, the 4i first activates the rear wheel, then when the front wheel activates, the brakes on the bicycle's body? It acts as if being pulled in both directions, providing stable braking.

In the past, in addition to the degree to which the left and right brake levers are gripped, the amount of time the left and right brake levers are gripped also has a bearing on stable braking. Because of the fact that both brakes are provided, there is a time delay in either direction, and due to the user's habits or operational errors, stable braking cannot be obtained.

The present invention was developed to solve this problem, and it is possible to apply the brakes by operating all 11 motions with one hand, first the rear wheels, then the front wheels, with a time delay. 9 [Structure of the invention] (Means for solving the problem) In order to solve the above-mentioned problems, the present invention has the following structure. .

The conventional punt brake for the rear wheel has been deleted, and 1
Both rear wheels used rim brakes. The brake lever is only on one side of the handlebar.1. When squeezed, it activates the rear rim brake. When the brake rubber comes into contact with the rim, the rim brake rotates along with the rear wheel while applying braking at a certain angle within a certain range.
Install rim brakes.

In addition, the rim brake for the front wheel is connected to the rim brake for the rear wheel by a wire as a connecting means, and the rim brake for the front wheel is operated by rotating the rim brake for the rear wheel. The brake rubber of the rim brake used in this bicycle brake device is arranged in a pair of bent rubber pieces.

(Operation) By using the rim brake as a brake for the rear wheel, the rim brake for the rear wheel rotates at a certain angle together with the rear wheel while being activated. This rotational movement causes the wire serving as the connecting means to pull the rim brake of the front wheel, and braking force is applied to both wheels.

Therefore, by connecting the front and rear rim brakes, both the front and rear wheels can be braked with one hand, and by momentarily delaying the braking of the front wheels, the vehicle body can be braked in a stable state. In addition, by arranging the pair of comb pieces provided on the rim brake in a bent state,
The braking action can now follow the rotational movement of the rim brake.

(Example) Examples of the present invention will be described with reference to the drawings. 1 is a perspective view showing the bicycle brake device of the present invention, FIG. 2 is a perspective view showing the movable body shown in FIG. 1, and FIG. 3 is a perspective view showing the rim brake shown in FIG. 1.

As shown in FIG. 1, a bicycle brake device 1 of the present invention
0 consists of a movable body 20 that is fixed to the vehicle body and whose one end makes a pendulum motion, and a rim brake 40 attached to this movable body.

The second rim brake 40 is basically the same as a known commercially available rim brake, except that the brake comb 45 that contacts the rim of the wheel is different.9About the movable body 20 and the rim brake 10. , will be explained in more detail with reference to FIGS. 2 and 3.

As shown in FIG. 2, the movable body 20 is attached to the bicycle body.
, a fixture 30 that is attached to the fixture 30, and a fixture 22 that is attached to allow pendulum movement of the fixture.

The fixture 30 includes band-shaped arcuate walls 32 arranged facing each other, and holes 34 arranged facing each other by extending each pair of the arcuate walls.
The attached fixing piece 33 and the U-shaped connecting piece 36, which is provided on the other end side of the arcuate wall 32 provided with the fixing piece and connects the arcuate walls 32 arranged oppositely, are each integrated. The connecting pieces 36 are provided with holes 37 facing each other on the arcuate wall 32 side, and can be fixed together with the holes 34 provided in the fixing piece 33 to a pillar of the vehicle body by screwing.

The fixture 22 is made of a wooden board having a U-shaped cross section, and has a bolt 26 attached to one end thereof. One end of the side wall 23 of this fixture 22 is connected to the end of the connecting piece 36 forming the fixture 30 using a pin F, and the second pin is connected to the rotation center 2,
'1, attach the fixture 22 to the indicated top mark J'ij'1.
It is attached to a yoke that allows pendulum movement.

The rim brake 40, not shown in FIG. It consists of a brake body 42 provided with wire receivers 44, 44 on the outside, and a brake comb 45 disposed opposite to each other at the open end of the brake body.

The brake comb 45 has a pair of rubber pieces 47 bent in a U-shape or a V-shape and arranged on a fitting 46 having a U-shaped cross section.

The size of this comb piece 47 is the same as that of the conventional example, or because two pieces are arranged in the longitudinal direction of the fixture 46,
Brake rubber 45 (i) Approximately twice the size of conventional products.

The rim play 440 of the present invention uses either the brake body 42 or a known rim brake, and has a major feature in the brake comb 45. When the wire [2] is connected to the wire receiver 44 of the brake comb and pulled in the direction of the arrow shown in Fig. 3, the brake rubber 45 moves in the direction closer to each other, which is the same as in the conventional product. .

The reason why only the tip of the brake body 42 opens and closes is because a hole is provided at the center of the U-shape, and the tip of the pair of curved bodies 41 opens and closes using this hole as the rotation center hole 43.

The rotation center hole 43 can be fixed by being inserted into the bolt 26 provided in the above-mentioned fixture 22, or a wire fixture 48 for holding a wire can also be used as a connecting means 14 for operating other brakes. It is set up so that they can be installed at the same time. There is no need to be particular about the shape of the wire fixture 48 as long as it can hold the wire.

For example, the wire receiver 44 may be formed to protrude from the curved body 41.

The movable body 20 and the rim brake 404 thus formed are assembled as shown in FIG. It is possible to move like a pendulum in the direction C shown by . And this bicycle's brake device 10
is mainly used for braking the rear wheels of bicycles.1
Note that the wire 15 as the connection means 4 connected to the wire fitting 48 explained in FIG. 3 passes through the wire through hole 3g of the guide piece 38 shown in FIG. Connects to the rim brake that performs braking for the front wheels.

That is, the wire 15 is a connecting hand Vj, 14 that is connected to the rear wheel brake device 10 of the present invention and operates the front wheel brake.

An example of the use of the bicycle brake device 10 configured as described above will be described with reference to FIGS. 4 and 5.

FIG. 4 is an explanatory view showing how the bicycle brake device according to the invention is installed, and FIG. 5 is a perspective view showing the main parts of FIG. 4.

As shown in FIG. 4, the bicycle 50 has a front wheel 51 and a rear wheel 52.
The pipe material forms a triangular frame between the two. The triangular frame consists of a vertical pipe 53 that supports the saddle, an upper pipe 54 that connects one end of this vertical pipe to a node 7, and this upper pipe and a vertical pipe.

It is a triangle formed by a lower pipe 55 connecting the lower ends of the pipes 53 and 53.

Between the upper pipe 54 and the lower pipe 55, there is a
is interposed, and a knob or front fork 57 is connected to this front pipe 56. Further, a rear fork 58 is provided from the lower side of the saddle of the standing nob 53 toward the center of the rear wheel 52, and these pipes, forks, etc. constitute the body of the bicycle.

In contrast to the bicycle 50 shown in Fig. 2, the bicycle brake device 10 of the present invention has a standing nozzle (eve 53) that supports the saddle.
The fixture 30 of the movable body 20 is fixed, the rim brake 40 is placed toward the center of the rear wheel 52, and the entire device is attached so that the brake rubber 45 approaches the rim 64 of the rear wheel.

How to attach these components will be explained in more detail with reference to FIG.

The 5th UA shows the vertical pipe 53 and the rear wheel viewed diagonally from the rear of the bicycle body, and the fixing device 30 constituting the bicycle brake system 0 is an 8-rim flake 40 fixed to the vertical pipe 53 with a screw. Alternatively, by being arranged in line with the attachment 22, the brake rubber 45 is arranged close to the rim 64 of the rear wheel.

Brake device of this bicycle] Wire 12 that operates 0
As before, on either end of the handle!
By squeezing the brake lever (0), the wire 12 is pulled.

On the other hand, a wire 15 as a connecting means 14 pulled out from the opening/closing center of the rim brake 40 is arranged approximately parallel to the front fork and connected to the rim brake, which is a front wheel flake kilo 2 attached to a front pipe 56. .

The braking state of the bicycle brake system]0 installed in this way will be explained with reference to FIGS. 6 and 7. FIG. 6 and FIG. 7 are explanatory diagrams showing the braking state of the rear wheels.

When the Fluke lever is squeezed, the pair of brake rubbers 45 is actuated by the wire 12 shown in FIG. 6, pressing the rim 64 of the rear wheel from both sides. At this time, as shown in the figure, among the pair of rubber pieces 47 bent in a V-shape, the upper rubber piece facing parallel to the rim mainly performs braking. This state is the state shown in FIG.

When the brake rubber 45 comes into contact with the brake pad 4, as shown in FIG. 7, the entire rim brake 40 rotates and moves together with the rear wheel in the direction of the arrow in the figure. Then, the rubber piece 47 also rotates together with the rim brake, and the lower rubber piece 47 shown in the figure faces the rim in parallel. The lower rubber piece mainly performs braking.9 The movement of the rubber piece 47 shown in FIGS. 6 and 7 is always performed while braking. Further, this movement range is the same as the angle through which the pendulum movement of the fixture 22 supported at the negative point. Braking of the rear wheels is then continued in the state shown in FIG.

On the other hand, when the rim brake starts to move to the position shown in FIGS. 6 to 7, the wire 15 serving as the connecting means 14, which is large enough for the rim brake, also moves, so that the wire 15 is pulled by this movement. By this movement, the wire 15 serving as the connecting means 14 connected to the rim brake for the front wheel brakes the front wheel.

Therefore, when the brake lever is squeezed, braking of the rear wheels begins immediately, followed by a momentary delay before braking of the front wheels.

When braking is finished, the brake system returns to its original state by releasing the brake lever.

[Effects of the Invention] As explained above, according to the present invention, the rim brake for the rear wheel is attached so as to rotate, and this movement is utilized to brake the front wheel brake, thereby obtaining many effects. I was able to do something.

In other words, the rear wheels are braked first, and then, after an instant of delay, the front wheels begin braking, making it possible to brake the bicycle in a stable manner.

According to the second brake device, only one brake lever is required, and both wheels can be braked even when driving with one hand. This brake lever can be attached to either the left or right side of the steering wheel, so it can be attached to the dominant side, and the other side can be used for other purposes by providing a lever, etc. Ta.

Furthermore, the hunt brake, which is a conventional brake for the rear wheels, is not very effective as a brake for reversing, and is not reliable on steep slopes. However, if you use this brake system on the rear wheels, it will brake with the same strength both forward and backward, and both wheels can be locked, giving you peace of mind.It has many benefits not only in terms of performance but also in terms of safety. I was able to get it.

lO... Bicycle brake device,

Claims (2)

[Claims] (1) A movable body whose one end is fixed and whose other end rotates in the direction of rotation of the wheel; a rim brake whose one end is fixed to the movable body and which brakes the wheel; A bicycle braking device comprising a rim brake and a connecting means for operating another brake different from the rim brake. (2) A brake body in which a pair of curved bodies are arranged in a U-shape, and the U-shaped open end moves to open and close using the center of the curved part as a fulcrum; A brake comprising a pair of rubber pieces bent along an arc of a brake.