JPS5915684Y2 - Air sensor mounting device for motorcycles - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an air sensor mounting device that is mounted on a motorcycle and is used to remotely indicate abnormalities in tire air pressure such as a puncture.

More specifically, when installing the receiving means on the vehicle body side opposite to the transmitting means attached to the rotating wheel side, the transmitting means is attached near the center of the wheel and in the width direction of the vehicle body, taking into account the balance of centrifugal force, etc. The present invention relates to an air sensor mounting device for a motorcycle in which a receiving means is mounted near the axle support portion of a front fork so as to face the front fork.

2. Description of the Related Art Air sensors are known that are attached to motorcycles and that, when the tire air pressure decreases below a specified value due to a flat tire or the like, activate a warning means such as a lamp and display the information remotely so that the driver can sense this fact.

The air sensor consists of a transmitting means attached to the rotating wheel to introduce tire air pressure into the interior, and a receiving means attached to the vehicle body at an appropriate distance from the transmitting means.A magnet is installed inside the transmitting means. When the magnet moves forward due to a decrease in air pressure and approaches the receiving means, the reed switch of the receiving means is magnetically closed and the alarm means is activated.

In addition to the magnet, a plurality of parts such as a support member for holding the transmitting means are housed inside the transmitting means, and the transmitting means has a certain amount of weight in addition to its own housing.

When attaching a heavy transmitting means to a rotating wheel, it is desirable to take this weight into account.In order to avoid generating large centrifugal force and to obtain a good rotational balance of the wheel, it is desirable to attach it as close to the center of the wheel as possible. It is desirable to mount the transmitting means close to the reed switch by moving the magnet forward, or by opening the door in the width direction of the vehicle body and attaching the receiving means to the vehicle body at a location corresponding to this mounting position. This is required.

In view of the above-mentioned demands, the present invention has been developed to effectively meet the demands.

The object of the present invention is to install an air sensor consisting of a transmitting means attached to the rotating wheel and a receiving means attached to the vehicle body, and to install the receiving means near the axle support part of the front fork, thereby receiving the information. A motorcycle in which the transmission means attached to the wheel side facing the vehicle width direction can be brought close to the center of the wheel, which is advantageous in terms of centrifugal force due to the weight of the transmission means and rotational balance of the wheel. Provided is an air sensor mounting device.

A preferred embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

FIG. 1 shows a motorcycle 1 to which the present invention is applied. A front wheel 2, which is a front wheel, is supported by a front fork 3. An axle 5 is supported.

In addition, a wheel 2 is mounted on the axle 5 coaxially with the front wheel 2.
A brake disc 6 is provided for braking the brake disc 6, and the brake disc 6 has a plurality of window holes 6a near the center.
... are formed radially at equal angular intervals.

Front fender 7 that covers the top surface of front wheel 2
The upper part is connected and supported by the front fork 3 with a bolt (not shown), and the lower part is connected to the front fork 3 by a stay 8.
It is connected to and supported by the bottom case 4 of.

2 is an enlarged view of the main part of FIG. 1, and FIG. 3 is a cross-sectional plan view of FIG. 2.

The base of the stay 8 that supports the lower part of the front fender 7 is screwed to the bottom case 4 of the front fork 3 with bolts 9.
The connection point to is near the axle 5 of the front wheel 2.

The axle 5 is supported by the mating surface of the bottom case 4 and an axle holder 10 assembled to the lower surface of the bottom case 4, and a nut 1 is attached to threaded rods 11a, 11a protruding from the bottom case 4.
1b and llb, the axle holder 10 is fixed to the lower surface of the bottom case 4.

Further, the brake disc 6 is connected to the bub 12 of the wheel 2 by screwing means 13 such as bolts and nuts.

The transmitting means 15, which constitutes one side of the air sensor 14, faces any window hole 6a of the brake disc 6, and is inserted into this 6a.
Fixed at 16.

As a result, the transmitting means 15 is attached to the brake disk 6 by using the window hole 6a formed in advance on the brake disk 6 to reduce weight and improve designability, and the transmitting means 15 is brought closer to the center of the wheel 2. wheel 2
The transmitter is attached to the transmitter to suppress the centrifugal force generated due to the weight of the transmitter, thereby improving the rotational balance of the wheel 2.

The inside of the transmitting means 15 communicates with the tire interior via a pipe member 17, and tire air pressure is introduced therein.

In addition, a magnet is built into the interior supported by a floating plate made of a diaphragm and a plate spring material, and when the tire air pressure is normal, the magnet is pushed back by this air pressure, and when the air pressure decreases due to a puncture, the spring elasticity The magnet moves forward due to the force, and the transmitting means 15
and approaches the receiving means 18 which constitutes the other side of the air sensor 14.

A reed switch is incorporated inside the receiving means 18, and the node switch is closed by the magnetic action of the advanced magnet, and a warning means such as a lamp is activated to make the driver aware of an abnormality in the tire air pressure.

The receiving means 18 is attached to the vehicle body using a support stay 19, and the receiving means 18 is coupled and supported at the tip of the stay 19, and the rear end is attached to the front fender 7.
Insert the stay 8 into the bolt 9 screwed onto the front fork 3, and connect the support stay 19 to the lower end of the bottom case 4 of the front fork 3 by tightening the bolt 9. Receiving means 18
The supporting stays 19 are tightened together.

As a result, the receiving means 18 is connected to the axle 5 of the front fork 3.
The transmitting means 15 is attached near the supporting portion of the wheel 2 and faces the transmitting means 15 attached near the center of the wheel 2 with an interval in the width direction of the vehicle body.

The method of mounting the receiving means 18 is not limited to this.
The screw rod 11a and the nut 11b may be used.

That is, the rear part of the support stay 20, which has the receiving means 18 coupled to its tip, is inserted into the threaded rod 11a, and the rear part of the support stay 20, which is connected to the receiving means 18 at the tip, is inserted into the threaded rod 11a.
11b, the support stay 2 for the receiving means 18
0 can be fastened together with the axle holder 10 to the bottom case 4, and the receiving means 18 is installed near the axle 5 supporting portion of the front fork 3.

It is also possible to attach the receiving means 18 to the bottom case 4 of the front fork 3 using the bolts 22 that fix the caliper 21 of the brake disk 6.

In addition, as in the example, the bottom case 4 of the front fork 3
By arranging the receiving means 18 at the rear of the lower part, the receiving means 18 can be protected from flying objects from the front.

As is clear from the above explanation, according to the present invention, the receiving means is attached near the axle support part of the front fork in correspondence with the transmitting means close to the center of the wheel, so the mounting position of the transmitting means is near the center of the wheel. The centrifugal force generated when the wheel rotates can be suppressed by the heavy transmission means, and the influence on the rotational balance of the wheel can be minimized to achieve good balance.

[Brief explanation of the drawing]

FIG. 1 is an overall side view of the motorcycle, FIG. 2 is an enlarged view of the main parts of FIG. 1, and FIG. 3 is a cross-sectional plan view of FIG. 2. In the drawings, 1 is a motorcycle, 2 is a wheel, 3 is a front fork, 5 is an axle, 14 is an air sensor, 15 is a transmitter, and 18 is a receiver.

Claims (1)

[Scope of utility model registration request] A transmission means for sensing tire air pressure is installed in a window hole provided radially inward from the annular sliding surface of the brake disc attached to the wheel side so as to rotate integrally with the wheel, and the front fork is A motorcycle characterized in that a receiving means facing the transmitting means is arranged and attached to the rear side of the lower part of the front fork by using the mounting bolts of other parts located at the lower part and at the rear side of the lower part. Air sensor mounting device.