JPS595604Y2 - Vehicle air sensor device - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an air sensor device that is attached to a vehicle such as a motorcycle, and is used to detect and remotely display an abnormality in tire air pressure due to a puncture or the like.

More specifically, the transmitting means constituting the air sensor together with the receiving means is formed by combining a plurality of single cases, and the single case is formed as a part of a spoke plate that connects the rim and hub of the wheel. This invention relates to an air sensor device for a vehicle in which a spoke plate is also used as a structural member of the air sensor, the number of parts is reduced, the weight and cost are reduced, and the accuracy of attachment to a wheel is improved.

Air sensors are known that are installed in vehicles such as automobiles and motorcycles, and when the tire air pressure drops below a specified value due to a puncture, etc., the abnormality in tire air pressure is displayed remotely so that the driver can feel it. .

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 that receives a tire pressure drop signal from the transmitting means and activates a warning means such as a lamp. Consisting of

When assembling the transmitting means on the wheel side and the receiving means on the vehicle body, considering that vehicles such as automobiles and motorcycles are constructed by combining an extremely large number of devices and parts, it is necessary to newly add an air sensor. It is desirable to suppress the increase in the number of parts as much as possible.

If the air sensor is constructed completely independently of the vehicle, not only will the number of parts in the entire vehicle increase by the amount of the air sensor, but this will also directly affect the cost, making it expensive.
In addition, for example, in a transmitting means attached to a wheel, the weight of the transmitting means directly becomes an amount of unbalance in the rotational balance of the wheel.

Further, due to inclusions such as connectors used for attaching the transmitting means to the wheel, variations occur in the mounting accuracy of the transmitting means, and the dispersion in the mounting position becomes large.

In view of the above points, the present inventor has developed the present invention in order to effectively solve the problems.

The purpose of this invention is to provide a transmitting means attached to the wheel side,
In an air sensor consisting of a receiving means attached to the vehicle body side facing the air sensor, the case of the transmitting means is formed by combining a plurality of individual cases such as the main body and a cap, and the rim and hub of the wheel are combined. One of the plurality of individual cases is integrally formed with the spoke plate to be combined, so that the spoke plate is also used as a single case,
To provide an air sensor device for a vehicle in which a case for a transmitting means can be automatically provided by combining and assembling another case alone.

Therefore, the purpose of the present invention is to form a single case as a part of the spoke plate and use the spoke plate as a structural member of the air sensor, so that the single case of one air sensor can be omitted, and the number of parts can be reduced. In addition to trying to reduce
In addition to reducing weight and cost I, it is possible to reduce variations in installation accuracy because other cases can be assembled to a specific case that is integrally formed with the spoke plate. To provide an air sensor device for a vehicle, which can be mounted at a higher precision than before.

Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

FIGS. 1 and 2 show an embodiment of the present invention, and are enlarged views of the main parts of the wheel.

This wheel 1 is used for a motorcycle, and may be a front wheel or a rear wheel.

The wheel 1 includes a hub (not shown) on the inner diameter side, a rim 2 on the outer diameter side, and spoke plates 3 that connect the hub and the rim 2.

The spoke plates 3 are obtained by pressing or shaping a metal plate material made of, for example, an aluminum alloy, and the spoke plates 3 are arranged as a set of two, facing each other in the axle direction, and the base ends of these two plates 3, 3 are It is attached to the hub with bolts, nuts, etc., and its tip is fixed to a ring-shaped protrusion 2a provided on the inner peripheral surface of the rim 2 with rivets 3a, 3a.

In this way, the hub and rim 2 are connected and integrated by the spoke plates 3, and the wheel 1 is constructed by arranging a plurality of sets of two plates 3 in the circumferential direction.

The air sensor 4 is a transmitting means 5 attached to the wheel 1 side.
The transmitting means 5 is composed of a receiving means 6 mounted on the vehicle body so as to face the transmitting means 5 with an appropriate distance in the width direction of the vehicle body.

A case 7 of the transmitting means 5 is formed by combining a main body 8 and a cap 9, and the case 7 is provided by a combination of two single cases 8 and 9.

The main body 8 is formed integrally with the spoke plate 3, and is provided with a bulging portion 3a that partially protrudes outward from the axle when the spoke plate 3 is press-formed. do.

The cap 9 of the case 7 has a flange 9a on the peripheral edge as shown in FIG. 2, and the end face is open on the side of the flange 9a. The main body 8 and the cap 9 are combined and assembled by applying the flange 9a and riveting the flange 9a with rivets 10.

As a result, the spoke plate 3 formed integrally with the specific case unit 8 is also used as a part of the case 7 of the transmitting means 5, and the number of parts is reduced by the main body 8.

When the cap 9 is coupled to the spoke plate 3 with the rivet 10, a diaphragm 11 is incorporated inside and its peripheral portion is clamped and supported.

A magnet 12 is coupled to the front surface of the diaphragm 11 with a fastener 13 such as a screw, and a resilient force of a spring 15 is applied to the rear surface of the diaphragm 11 via a receiving member 14.

The air pressure of the tire 17 is guided to the front chamber A of the case 7 divided by the diaphragm 11 through the pipe member 16 shown in FIG. 1, and the rear chamber B is open to the atmosphere.

When the tire air pressure is normal, the magnet 12 overcomes the elastic force of the spring 15 and moves backward. When the tire air pressure decreases due to a puncture, etc., the magnet 12 moves forward due to the elastic force of the spring 15, and the magnet 12 moves backward by the elastic force of the spring 15. approach.

As a result, the reed switch 6 incorporated in the receiving means 6
a is closed by the magnetic action of the magnet 12, and a warning means such as a lamp is activated to make the driver aware of an abnormality in the tire air pressure.

The device according to the present invention described above is applicable not only to motorcycles but also to vehicles such as automobiles.

As is clear from the above explanation, according to the present invention, the case of the transmitting means that monitors the air sensor together with the receiving means can be formed by combining or assembling multiple cases such as the main body and the cap, or by forming the case on the rim of the wheel. Since a single case is integrally formed with the spoke plate that connects the hub and the spoke plate, the spoke plate also serves as a part of the case of the transmitting means, and the spoke plate also serves as a structural member of the air sensor, which reduces the number of parts. This allows the device to be manufactured at low cost, resulting in cost reduction.

In addition, by using one case as a spoke plate, the weight of the device is reduced by the amount of the omitted case, and by reducing the weight of the transmission means attached to the wheel, imbalances in the rotational balance of the wheel can be reduced. The amount can be reduced accordingly, which contributes to reducing the capacity of the balance weight attached to the wheel.

Furthermore, since it is only necessary to combine and assemble other cases to the case that is formed integrally with the spoke plate, the installation accuracy can be improved compared to the case where the transmission means is formed separately from the wheel. This reduces the variation in installation accuracy due to inclusions, making it possible to achieve a high-precision installation position.In addition, since the cap of the transmission means is relatively protruding between the pair of spoke plates, this cap, and even the transmission The means can be protected by the other spoke plate, and the appearance is also excellent.

Furthermore, since a part of one spoke plate is bulged outward to provide a transmitting means, it can be easily shaped by pressing or the like.

Generally speaking, this type of wheel has a pair of spoke plates that are spaced apart on the hub and joined together, and on the other hand, these plates are joined together so that they converge on the rim, so as mentioned above, storage space can inevitably be secured. In addition, since it is excellent in strength, it exhibits various effects such as being able to further protect the transmission means and improve reliability.

[Brief explanation of the drawing]

FIG. 1 is an enlarged side view of the main part of the wheel according to the first embodiment;
FIG. 2 is a longitudinal sectional view of the same. In the drawings, 1 is a wheel, 3 is a spoke plate, 4 is an air sensor, 5 is a transmitting means, 6 is a receiving means, 7 is a case, 8 is a main body, 9 is a cap, 11 is a diaphragm, 1
2 is a magnet, and A is a front chamber.

Claims (1)

[Scope of utility model registration request] In a wheel in which a rim and a hub are connected to each other by a plurality of pairs of left and right spoke plates 3, 3 spaced apart from each other,
A part of one spoke plate 3 is bulged outward to form a main body 8, a cap 9 is provided inside this 8 to form a case, and a magnet 1 is placed inside this case 7.
The vehicle is characterized by comprising a transmitting means 5 having a diaphragm 11 for holding the tire and a front chamber A for guiding air from the tire, and a receiving means 6 attached to the vehicle body so as to face the transmitting means 5. air sensor device.