JP2004359123A - Mounting structure of housing and mounting method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a mounting structure of a housing and a mounting method capable of easily mounting and dismounting the housing to a wheel of a vehicle. <P>SOLUTION: The mounting structure of the housing 1 mounts the housing 1 to the axis of a vehicle wheel W, and equipped with wheel nuts 8 having thread holes 8a in heads, bolts 9 screwed in the thread holes 8a, and a stay 7 for fixing which is integrally mounted with the housing 1 and forms mounting holes 7b at positions opposed to the wheel nuts 8. The housing 1 is constituted so as to be mounted to the wheel W by inserting the bolts 9 from the mounting holes 7b and screwing the bolts 9 into the thread holes 8a of the wheel nuts 8. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a housing mounting structure and a mounting method for mounting a housing to a vehicle wheel.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, as a system for detecting a tire puncture early, for example, a pneumatic pressure drop monitor that detects a tire pressure drop based on the rotation speed of each wheel in order to let a driver recognize a tire pressure drop during driving of an automobile. There is a system (for example, see Patent Literature 1) and an air pressure drop monitoring system that detects a decrease in tire air pressure with a pressure sensor.
[0003]
In recent years, such air pressure drop monitoring systems have been regarded as important with the spread of US regulations and run-flat tires, and thus need to be evaluated by an optimum performance evaluation test in order to improve their performance. In addition, such a performance evaluation test required a test device for intentionally bleeding tires during traveling in order to know whether or not the system can normally detect a decrease in air pressure.
[0004]
The applicant has already filed a Japanese Patent Application No. 2002-315237 (not disclosed) as a device (pneumatic pressure control device) for deflating the tire.
FIG. 8 is an exploded perspective view of the air pressure control device.
In the pneumatic pressure control device 100 described in the specification and the drawings of Japanese Patent Application No. 2002-315237, when a control signal is input from an external transmitter 101 outside the vehicle, the control signal is transmitted to a tire-side receiver provided on the tire T side. The data is transmitted to the pressing device 103 via the key 102. Then, based on the control signal, the control wire 104 connected to the pressing device 103 presses the valve pin of the valve B provided on the tire T, and releases the air in the tire T. With this configuration, the air in the tire T can be evacuated by a predetermined amount at a predetermined time, and pressure reduction control in the tire T during vehicle running, which could not be performed conventionally, has become possible.
[0005]
In such a pneumatic pressure control device 100, a fixing board 105 to which components such as a tire-side receiver 102 and a pressing device 103 provided on the tire T are joined and fixed to a wheel flange 106 with a screw 107 is attached. The lid 108 covers the fixing board 105 from above. The wheel flange 106 is fixed to the wheel W with a nut 109, and each component is fixed to the tire T side.
[0006]
[Patent Document 1]
JP-B-48-6829 [0007]
[Problems to be solved by the invention]
However, when the components of the pneumatic pressure control device 100 described in the specification and drawings of the above-mentioned Japanese Patent Application No. 2002-315237 are mounted on the tire T side, the wheel flange 106 having the screw hole 106a is fixed to the wheel W with the nut 109. After that, the fixing board 105 must be fixed to the wheel flange 106 with the screws 107. Therefore, there has been a problem that the efficiency of the mounting operation is low.
Further, since the screw holes 106a for inserting the screws 107 for attaching the fixing board must be formed in the wheel flange 106 in advance, it is necessary to manufacture a dedicated wheel flange, which causes a problem that the cost is increased. Was.
[0008]
Further, the number, position, and the like of the nuts 109 for fixing the wheel flange 106 to the wheel W differ depending on each manufacturer. Therefore, the fixing board 105 for joining each component also needs design adjustment such as forming a screw hole 105a at a position where it does not interfere with the nut 109 in accordance with the number and position of the nut 109, etc. There was such a problem.
In particular, when used in the above-described performance evaluation test, it is inefficient to attach and detach the fixed board 105 to which each component is joined in accordance with the type of the wheel W or the nut 109 each time.
[0009]
Then, this invention is made in order to solve the said problem, and makes it a subject to provide the mounting structure and mounting method of the housing | casing which can attach / detach the housing | casing to a vehicle wheel easily.
[0010]
[Means for Solving the Problems]
The present invention is configured to solve the above-mentioned problem, and the invention according to claim 1 is a mounting structure of a housing for mounting the housing around an axis of a wheel of a vehicle, wherein And a wheel nut provided with a screw hole in the head, a bolt screwed into the screw hole, and a mounting hole formed integrally with the housing and opposed to the wheel nut. The housing is attached to the wheel by inserting the bolt through the attachment hole and screwing the bolt into the screw hole of the wheel nut.
[0011]
According to the first aspect of the present invention, when mounting the housing in which the flange portion is integrally provided to the wheel, the screw hole of the wheel nut is aligned with the mounting hole of the flange portion, and the bolt is inserted from the flange portion side. And screw it into the screw hole of the wheel nut. In this manner, the housing can be easily attached to the center of the wheel axis only by fastening the bolt and the wheel nut, and the housing can be easily removed by removing the bolt. Note that various means such as fastening with bolts and nuts, bonding and welding, and the like can be used for integrating the flange portion and the housing.
[0012]
According to a second aspect of the present invention, in the mounting structure of the casing according to the first aspect, the flange portion is exchangeably attached to the casing.
[0013]
According to the second aspect of the invention, in addition to the operation of the first aspect, when a housing attached to one wheel is replaced with another wheel, the position and the number of wheel nuts of the other wheel are changed. The combined flange portion is selected, and the flange portion attached to the housing and the selected flange portion are exchanged and attached integrally to the housing. Then, the screw hole of the wheel nut is aligned with the mounting hole of the flange portion, and the bolt is inserted from the flange portion and screwed into the screw hole of the wheel nut. As described above, by replacing the flange portion, one housing can be easily attached to various wheels.
[0014]
The invention according to claim 3 is a method of mounting a housing for mounting the housing at the center of the axis of a wheel of a vehicle, wherein a step of fastening a wheel nut provided with a screw hole in a head to a wheel bolt is provided. A step of selecting a flange portion having a mounting hole at a position facing the wheel nut from a plurality of flange portions, and integrally mounting the selected flange portion and the housing; And a step of inserting a bolt through the mounting hole and screwing the bolt into the screw hole of the wheel nut.
[0015]
According to the invention described in claim 3, a wheel nut provided with a screw on its head is previously mounted on the wheel side (wheel bolt), and a flange portion having a mounting hole aligned with the position of the wheel nut is provided. Select to integrate the flange with the housing. Then, the bolt is inserted through the mounting hole of the flange portion and screwed into the screw hole of the wheel nut. In this way, a wheel nut with a screw on the head is attached to the wheel in advance, so simply by screwing a bolt to this wheel nut, the housing can be easily attached to the center of the axis of the ready-made wheel. it can. Note that various means such as fastening with bolts and nuts, bonding and welding, and the like can be used for integrating the flange portion and the housing.
[0016]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, with reference to the drawings, embodiments of a housing mounting structure and a mounting method according to the present invention will be described in detail. In the present embodiment, a case will be described in which a housing containing components to be mounted on the tire side of the tire pressure control device is mounted on the center of the wheel axis. In the drawings to be referred to, FIG. 1 is an exploded perspective view showing components inside a housing, FIG. 2 is a perspective view showing a layout inside the housing, and FIG. 3 is a plan view showing a layout inside the housing.
In the present embodiment, the configuration and operation of the tire pressure control device will be described first, and then the mounting structure and mounting method of the housing will be described.
[0017]
The tire pressure control device is a control device for removing air from the tire T, and includes a control board 2, a stepping motor 3, a control wire 4 connected to the stepping motor 3, a battery 5, an external transmitter ( (Not shown) mainly (see FIG. 1). As shown in FIGS. 2 and 3, the control board 2, the stepping motor 3, and the battery 5 are built in the housing 1 to which the fixing stay (flange portion) 7 is integrally attached, and It is attached to W. The external transmitter is provided in a vehicle interior (not shown).
[0018]
The housing 1 shown in FIG. 1 includes a cylindrical storage body 11 having an open top and a lid 12 fitted into the storage body 11, and is a PCD (Pitch Circle Diameter) for mounting a wheel to a hub. (Distance between bolt holes). Five screw holes 11a are formed in the bottom surface of the housing main body 11 along the outer circumference so that a fixing stay 7 described later can be fixed thereto. In the present embodiment, five screw holes 11a are provided. However, the number of screw holes 11a is not particularly limited, and three screw holes 11a may be used as long as the fixing stay 7 can be fixed to the housing body 11. But four is fine.
An air hole 11b is formed in the center of the bottom surface of the storage body 11, so that the inside air can be released to the outside and the inside moisture can be released to the outside.
[0019]
At the center of the lid 12, a mounting screw 13 is provided so as to penetrate therethrough, so that the head 13 a of the mounting screw 13 is gripped and easily fitted to the storage body 11.
A bracket 6 is fixed in the housing body 11 with a screw V1 (see FIG. 2), and a screw hole 6a formed in the center of the bracket 6 and a screw portion 13b of a mounting screw 13 of the lid 12 are screwed. Then, the housing body 11 and the lid 12 are crimped. In addition, in order to improve water resistance, a watertight packing may be interposed between the storage main body 11 and the lid 12.
[0020]
The control board 2 has a function as a receiver for receiving a control signal for driving the stepping motor 3 from an external transmitter, and a function of a control device for controlling the stepping motor 3.
[0021]
The stepping motor 3 converts the force in the rotational direction into the force in the axial direction of the rotating shaft 3a inside, and the tip 3b is configured to be able to advance and retreat at predetermined strokes in the axial direction of the rotating shaft 3a. By projecting the distal end 3b by a predetermined stroke, a valve pin C1 (see FIG. 4) of a valve C provided on the control wire 4 described later is pressed, and the air in the tire T is discharged by a predetermined amount. Further, after the predetermined time elapses, the tip 3b is retracted by an amount corresponding to the advance, whereby the release of air is stopped.
[0022]
FIG. 4 is an exploded perspective view showing the valve pin pressed by the tip of the stepping motor.
The control wire 4 shown in FIG. 4 is a hollow tube that guides the air in the tire T to the housing 1 at the center of the wheel W (see FIG. 6). The control wire 4 is formed of a member having high rigidity in order to suppress deflection due to centrifugal force and vertical vibration during running of the vehicle, and is formed of a member having pressure resistance and airtightness because high air pressure in the tire T is applied. Is done. One end (the tire T side) of the control wire 4 is connected to a valve B provided on the tire T while the valve pin is constantly pressed (see FIG. 6), and the other end (the tire air pressure control device side) is It penetrates the outer peripheral surface of the storage main body 11 and is fixed to the inside thereof, and is connected to the stepping motor 3 via a valve C having the same structure as the valve B provided on the tire T (FIGS. 2 to 2). (See FIG. 4).
[0023]
In other words, the air in the tire T passes through the air hole 11 b and the air hole 11 b through the housing 1 when the tip 3 b of the stepping motor 3 presses the valve pin C 1 of the valve C provided on the other end of the control wire 4. It is configured to be discharged to the outside through an air hole 7c of a fixing stay 7 described later. In the present embodiment, the control wire 4 has a structure having the valve C and the valve pin C1 on the side of the stepping motor 3, but the present invention is not particularly limited, and the valve pin of the valve B provided on the tire T is directly connected. A structure for pressing may be used.
[0024]
The battery 5 supplies power to the control board 2 and the stepping motor 3. In the present embodiment, the battery 5 is configured by connecting a plurality of AAA batteries 5a, 5b,... 5h in series. The dry batteries 5a,... 5h are arranged so as to face each other along the inner peripheral surface of the storage body 11. By doing so, the rotation balance when attached to the wheel W and rotating with the wheel W is improved, and the storage efficiency can be improved. However, the battery 5 is not particularly limited. For example, a single battery may be used, or a plurality of plate-shaped lithium batteries connected in series may be used.
[0025]
The external transmitter has a function of a transmitter that transmits a control signal for driving the stepping motor 3 to the control board 2. The wireless communication between the control board 2 and the external transmitter can use an analog method based on FM modulation or a digital method based on PCM modulation. The communication direction may be one-way communication from the external transmitter to the control board 2 or two-way communication.
[0026]
Here, the arrangement of the components included in the housing 1 will be described.
As shown in FIGS. 2 and 3, the stepping motor 3 is disposed at the center of the bottom of the storage main body 11, and dry batteries 5 a, 5 b,... 5 h are disposed along the inner peripheral surface of the storage main body 11. The control board 2 is disposed above the stepping motor 3 and is fixed to the bracket 6 with screws V2 so as not to move inside the housing body 11. With this arrangement, the balance of the center of gravity of the housing 1 is improved, and the strength and durability of the device itself, and the rotational balance when attached to the wheel W and rotated with the wheel W are improved. Further, by arranging the heavy stepping motor 3 at the center where the centrifugal force is not easily applied, the operation accuracy of the stepping motor 3 can be improved, and it is possible to prevent the stepping motor 3 from falling off inside the housing 1 while the vehicle is running.
[0027]
The operation of the thus-configured tire pressure control device will be schematically described.
When a control signal is transmitted from the external transmitter while the vehicle is running, the control signal is transmitted to the stepping motor 3 via the control board 2. The tip 3b of the stepping motor 3 moves forward based on the control signal and retreats after a lapse of a predetermined time, so that the valve pin C1 of the valve C provided at the center of the wheel W is moved for a predetermined time by a predetermined time. Pressing with a stroke (see FIG. 4), a predetermined amount of air is discharged from the tire T into the housing 1, and is discharged to the outside through an air hole 11b and an air hole 7c formed in a fixing stay 7 described later. . Thereby, air can be evacuated by a predetermined amount at a predetermined time while the vehicle is running. Therefore, the accuracy of the performance evaluation test of the air pressure drop monitoring system can be improved.
[0028]
Next, an attachment structure for attaching the housing 7 to the wheel W will be described.
FIG. 5 is a perspective view of the housing, and FIG. 6 is an exploded perspective view showing components of the mounting structure according to the present embodiment.
As shown in FIG. 6, the fixing stay 7 is formed by screwing a screw V3 into a screw hole 11a of the housing body 11 through a fixing hole 7a formed at a position facing the screw hole 11a. 1 is fixed (see FIG. 5). The fixing stay 7 has a mounting hole 7b for mounting the wheel W at a position facing the wheel nut 8 fixed to the wheel W, and an air hole 7c near the center. .
[0029]
Note that the fixing stay 7 is configured to be replaceable with respect to the housing 1 so as to be compatible with wheels W having different positions and numbers of wheel nuts 8. Further, in the present embodiment, the fixing stay 7 is formed in a star shape, but the shape of the fixing stay 7 is not particularly limited, and a portion extending outward from the storage body 11 integrally attached. As long as it has a mounting hole 7b, it may be square or circular. For example, if the fixing stay 7 is formed in a circular shape, a plurality of mounting holes corresponding to the number and positions of the wheel nuts 10 can be formed at desired positions, which can be applied to various wheels. Further, if the fixing stay 7 is circular, interference of the housing is minimized, and versatility is improved.
[0030]
As shown in FIG. 6, a screw hole 8a is provided in the head of the wheel nut 8 screwed into the wheel bolt WB.
[0031]
Next, a method of attaching the housing according to the present embodiment will be described with reference to FIG. 7A and 7B are diagrams illustrating a method of attaching the housing to the wheel according to the present embodiment, wherein FIG. 7A is an exploded perspective view illustrating a procedure for attaching the housing to the wheel, and FIG. 7B is an exploded perspective view. It is a perspective view of a body.
[0032]
First, as shown in FIG. 7 (a), a wheel nut 8 having a screw hole 8a at the head is screwed into five wheel bolts WB protruding from the wheel W. Then, the fixing stay 7 to which the housing 1 is fixed is disposed so that the mounting hole 7b and the screw hole 8a of the wheel nut 8 face each other, and the bolt 9 is inserted through the mounting hole 7b, and the screw 9 is screwed into the screw hole 8a. To wear. In this manner, the housing 1 is easily attached to the wheel W, as shown in FIG. Further, the wheel W can be easily removed simply by removing the bolt 9.
[0033]
According to the above, the following effects can be obtained in the present embodiment.
The housing 1 can be attached to the center of the axis of the wheel W only by fastening together with the fixing stays 7 that match the number and position of the wheel nuts 8, so that the attachment operation can be facilitated. Further, even various wheels W having different positions, numbers, etc. of the wheel nuts 8 can be dealt with simply by replacing the fixing stay 7, so that versatility can be increased. Furthermore, since the wheel W and the tire T do not need to be removed for mounting on the wheel W, the mounting operation can be easily performed. In addition, there is no need to make a mounting jig dedicated to mounting, and the cost is economically low.
[0034]
In addition, since the housing 1 is formed in a cylindrical shape and has no corners, the shock resistance and aging of the housing 1 are made uniform, and the strength and durability of the housing 1 itself are improved as a whole. . Furthermore, since the housing 1 is formed in a cylindrical shape having a smaller diameter than the PCD, the housing 1 can be attached to the wheel W without interfering with the wheel nut 8.
[0035]
As described above, an example of a preferred embodiment of the present invention has been described. However, the present invention is not limited to the above-described embodiment, and a design can be appropriately changed without departing from the gist of the present invention.
In the present embodiment, the housing 1 is formed in a cylindrical shape, but the shape of the housing 1 is formed in a square, a pentagon, or a hexagon, for example, in accordance with the number of spokes of the wheel W and the number of wheel nuts. May be used. If it is formed in a quadrangular shape, it is possible to increase the storage efficiency of the components to be stored therein, and the manufacturing cost can be reduced because the shape is simple.
[0036]
Further, in the present embodiment, the case where the components of the tire pressure control device are incorporated in the housing 1 and the mounting structure according to the present invention is applied to the housing 1 has been described. The present invention can also be applied to a housing that accommodates
[0037]
【The invention's effect】
According to the first aspect of the present invention, the housing can be easily attached to the center of the wheel axis only by fastening the bolt and the wheel nut, and the housing can be easily removed by removing the bolt. it can.
[0038]
According to the invention described in claim 2, by replacing the flange portion, one housing can be easily attached to various wheels.
[0039]
According to the third aspect of the present invention, since a wheel nut provided with a screw on the head is attached in advance, only by screwing a bolt to the wheel nut, the housing can be set at the center of the axis of the ready-made wheel. Can be easily installed.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view showing components in a housing.
FIG. 2 is a perspective view showing a layout inside a housing.
FIG. 3 is a plan view showing a layout in a housing.
FIG. 4 is an exploded perspective view showing a valve pin pressed by a tip of a stepping motor.
FIG. 5 is a perspective view of a housing.
FIG. 6 is an exploded perspective view showing components of the mounting structure according to the embodiment.
7A and 7B are diagrams illustrating a method of attaching a housing to a wheel according to the present embodiment, wherein FIG. 7A is an exploded perspective view illustrating a procedure for attaching the housing to the wheel, and FIG. It is a perspective view of a case.
FIG. 8 is an exploded perspective view of the air pressure control device of Japanese Patent Application No. 2002-315237.
[Explanation of symbols]
Reference Signs List 1 housing 2 control board 3 stepping motor 4 control wire 5 battery 6 bracket 7 fixing stay 8 wheel nut 9 bolt T tire W wheel

Claims (3)

A housing mounting structure for mounting the housing around the axis of a vehicle wheel,
A wheel nut fixed to the wheel, and having a screw hole in a head thereof;
A bolt screwed into the screw hole,
A flange portion having an attachment hole formed at a position opposed to the wheel nut, which is integrally attached to the housing,
A housing mounting structure, wherein the housing is mounted on the wheel by inserting the bolt through the mounting hole and screwing the bolt into the screw hole of the wheel nut. The housing mounting structure according to claim 1, wherein the flange portion is exchangeably mounted on the housing. A housing mounting method for mounting the housing at the center of the axis of a vehicle wheel,
A step of fastening a wheel nut provided with a screw hole on the head to a wheel bolt,
A step of selecting a flange portion having a mounting hole at a position facing the wheel nut from a plurality of flange portions, and integrally mounting the selected flange portion to the housing;
Arranging the flange portion so that the mounting hole and the position of the wheel nut coincide with each other;
Inserting a bolt through the mounting hole, and screwing the bolt into the screw hole of the wheel nut.

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