JPH08207522A - Pneumatic sensor for tire - Google Patents
Pneumatic sensor for tireInfo
- Publication number
- JPH08207522A JPH08207522A JP7021443A JP2144395A JPH08207522A JP H08207522 A JPH08207522 A JP H08207522A JP 7021443 A JP7021443 A JP 7021443A JP 2144395 A JP2144395 A JP 2144395A JP H08207522 A JPH08207522 A JP H08207522A
- Authority
- JP
- Japan
- Prior art keywords
- rim
- air pressure
- tire
- pressure sensor
- end portion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Measuring Fluid Pressure (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は空気圧センサに係り、よ
り詳細には、車両走行中にタイヤの空気圧を感知して空
気圧が所定値未満となった時に、これを検出し、ドライ
バ−にタイヤの空気圧の低下を警報する内圧警報装置に
使用されるタイヤ用空気圧センサに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air pressure sensor, and more particularly to a tire pressure sensor which detects a tire air pressure when the vehicle is running and detects the tire pressure when the tire pressure is lower than a predetermined value. The present invention relates to a tire air pressure sensor used in an internal pressure alarm device for alarming a decrease in air pressure.
【０００２】[0002]
【従来の技術】一般に、リム組みされ空気を充填された
タイヤの内側の内圧は透過等により極めて除々に低下し
て行くので、随時空気の補充がなされている。近年、こ
のタイヤの内圧の低下を検出し、運転者に警報する内圧
警報装置が提案されている。内圧警報装置はホイ−ルの
リムに取り付けられ、タイヤの内圧を検出し検出信号を
発信する空気圧センサと、車両の固定側である車軸ケ−
スまたは車体に取り付けられ検出信号を受信し運転手に
警報する受信警報部とを有している。2. Description of the Related Art Generally, the inner pressure of the inside of a tire assembled with a rim and filled with air is extremely gradually decreased due to permeation or the like, so that air is replenished at any time. In recent years, there has been proposed an internal pressure alarm device that detects a decrease in the internal pressure of the tire and warns the driver. The internal pressure alarm device is attached to the rim of the wheel, detects the internal pressure of the tire and outputs a detection signal, and the axle casing that is the fixed side of the vehicle.
And a reception warning unit attached to the vehicle body or the vehicle body to receive a detection signal and warn the driver.
【０００３】従来の内圧警報装置の空気圧センサとして
は、例えば、図６に示すようなものがある。図６に示す
空気圧センサ３００は、チュ−ブレスタイヤ用のリム３
０２のリム開口部３０１にリム内部側２Ａから挿入され
る円筒状の基端部３０３とこの基端部の一端に一体的に
形成され、リム内表面に係合するフランジ状の先端部３
０４を備える。また、前記基端部にはネジ３０３Ａが切
ってあり、この基端部のネジ３０３Ａにナット３０５を
ねじ込みこのナットの締め付け力によりリム内の空気を
封止している。この時、先端部３０４と、リム内表面の
間に図示しないＯリング等のシ−ル手段を介在し、気密
性をより高いものとしている。An example of a conventional air pressure sensor for an internal pressure alarm device is shown in FIG. An air pressure sensor 300 shown in FIG. 6 is a rim 3 for a tubeless tire.
A cylindrical base end portion 303 which is inserted into the rim opening portion 301 of No. 02 from the inner side 2A of the rim and a flange-like tip end portion 3 which is integrally formed at one end of the base end portion and engages with the inner surface of the rim.
04. Further, a screw 303A is cut at the base end portion, and a nut 305 is screwed into the screw 303A at the base end portion to seal air in the rim by the tightening force of the nut. At this time, seal means such as an O-ring (not shown) is interposed between the tip portion 304 and the inner surface of the rim to enhance airtightness.
【０００４】さらに、図７に示す空気圧センサ４００
は、リム開口部４０１に直接雌ネジ４０１Ａを切り、こ
のリム開口部に雄ネジ４０３Ａが形成された空気圧セン
サの基端部４０３をねじ込み、空気圧センサ４００を気
密に固定していた。Further, the air pressure sensor 400 shown in FIG.
The female screw 401A is directly cut into the rim opening 401, and the base end portion 403 of the air pressure sensor having the male screw 403A formed therein is screwed into the rim opening 401 to fix the air pressure sensor 400 in an airtight manner.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら、上記構
成の空気圧センサを備えた内圧警報装置では、空気圧セ
ンサの基端部に直接ネジを切る為に、ネジ山の分だけ基
端部の径を大きくする必要があり、空気圧センサをコン
パクトなものにする事が難しかった。更に、ナットによ
り空気圧センサを取り付けるものでは、基端部の径に合
わせて、専用のナットを作製しなければならず、コスト
アップの原因となっていた。また、リム開口部にネジを
切るものにおいては、リムを加工する工程が増え、しか
も取付部の強度はリム部の肉厚に大きく左右されるた
め、肉厚の薄いリムには取付不可能であった。However, in the internal pressure alarm device equipped with the air pressure sensor having the above structure, the diameter of the base end portion is increased by the amount of the screw thread because the screw is directly cut to the base end portion of the air pressure sensor. It was difficult to make the air pressure sensor compact. Furthermore, in the case where the air pressure sensor is attached by a nut, a dedicated nut must be manufactured in accordance with the diameter of the base end portion, which causes a cost increase. Also, in the case of cutting a screw into the rim opening, the process of processing the rim is increased, and the strength of the mounting part greatly depends on the wall thickness of the rim part, so it cannot be mounted on a thin rim. there were.
【０００６】本発明は、上記従来技術の問題点を解決す
る為に成されたもので、空気圧センサやリムにネジを切
らずまた、専用の取付ナットを使用せずにリムへの取付
けが可能なタイヤ用空気圧センサを提供する事を目的と
する。The present invention has been made in order to solve the above-mentioned problems of the prior art, and can be mounted on the rim without screwing the air pressure sensor or the rim and without using a dedicated mounting nut. An object of the present invention is to provide a tire pressure sensor for tires.
【課題を解決するための手段】上述の目的を達成する為
に、本発明のタイヤ用空気圧センサは、ホイ−ルのリム
に開けられたリム開口部に貫通して取り付けられ、タイ
ヤ空気室内の空気圧を検出するタイヤ用空気圧センサに
おいて、タイヤ空気室内でリムに係合するフランジ状の
先端部と、この先端部に連設されリム開口部を貫通する
前記先端部より外径の小さい基端部と、前記基端部の外
周面に形成されたリング状の切り欠きと、この切り欠き
にはめ込まれ、前記先端部との間で前記タイヤ用空気圧
センサをリムに挟持させる為の拡径自在のストップリン
グとを備えた事を特徴とする。In order to achieve the above-mentioned object, a tire pressure sensor of the present invention is mounted through a rim opening formed in a rim of a wheel so as to penetrate the tire air chamber. In a tire air pressure sensor for detecting air pressure, a flange-shaped tip portion that engages with a rim in a tire air chamber, and a base end portion that is connected to the tip portion and that penetrates through a rim opening and has a smaller outer diameter than the tip portion. A ring-shaped notch formed on the outer peripheral surface of the base end portion, and a ring-shaped notch which is fitted into the notch and which allows the tire air pressure sensor to be clamped to the rim between the tip end portion and the ring-shaped notch. It is characterized by having a stop ring.
【０００７】[0007]
【作用】本発明のタイヤ用空気圧センサによれば、基端
部外周面の切り欠きにストップリングをはめ込む事によ
り、このストップリングとフランジ状の先端部とでタイ
ヤ用空気圧センサをリムに挟持出来るようにしたもので
ある。従って、空気圧センサやリムにネジを切る必要が
無く、また、専用のナットを使う必要も無い為、センサ
本体をコンパクト出来ると共に、リムへの取り付け加工
作業が極めて容易で、かつ安価になる。According to the tire air pressure sensor of the present invention, the tire air pressure sensor can be sandwiched between the stop ring and the flange-shaped tip portion by fitting the stop ring into the notch on the outer peripheral surface of the base end portion. It was done like this. Therefore, since it is not necessary to screw the air pressure sensor and the rim, and it is not necessary to use a dedicated nut, the sensor main body can be made compact, and the work of attaching the rim to the rim is extremely easy and inexpensive.
【０００８】[0008]
【実施例】以下、本発明の一実施例を図１〜図５に基づ
いて説明する。図５は本発明の実施例に係るタイヤ用空
気圧センサ１００（以下空気圧センサ１００）の取り付
け図を示す。空気圧センサ１００は、その内部の圧力検
出手段がタイヤ１の内部に配置されるように、タイヤ１
のリム２に取り付けられている。車体側のブレ−キカバ
−３には内圧警報装置のアンテナコイル４が空気圧セン
サ１００と対向するように取り付けられている。このア
ンテナコイル４はリ−ド線６を介して内圧警報装置の受
信ユニット５に電気的に接続されている。この受信ユニ
ット５はアンテナコイル４に空気圧センサ１００に向け
て電磁波を放射させ、かつ空気圧センサ１００によって
受信されるエコ−信号を受信して、エコ−信号の周波数
変化によりタイヤの内圧異常を検出する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. FIG. 5 shows a mounting view of a tire air pressure sensor 100 (hereinafter, air pressure sensor 100) according to an embodiment of the present invention. The air pressure sensor 100 has the tire 1 so that the pressure detecting means inside the air pressure sensor 100 is arranged inside the tire 1.
It is attached to the rim 2. An antenna coil 4 of the internal pressure alarm device is attached to the brake cover 3 on the vehicle body side so as to face the air pressure sensor 100. The antenna coil 4 is electrically connected to a receiving unit 5 of the internal pressure alarm device via a lead wire 6. The receiving unit 5 causes the antenna coil 4 to radiate an electromagnetic wave toward the air pressure sensor 100, receives an echo signal received by the air pressure sensor 100, and detects an abnormal tire internal pressure by a frequency change of the echo signal. .
【０００９】図１は本発明の実施例に係る空気圧センサ
１００の断面図を示す。図１に示すように、本発明の空
気圧センサ１００は、タイヤ空気室内でリムに係合する
フランジ状の先端部１０１と、この先端部に連設されリ
ム開口部を貫通する前記先端部より外径の小さい基端部
１０２と、センサカバ−１０３とによってそのケ−スが
構成されている。このケ−ス内には、後述する圧力スイ
ッチ、回路基板、発振コイル等が配置される。また、先
端部１０１のフランジ面１０１Ａには空気圧センサがタ
イヤのリムに取り付けられた場合に、タイヤ内を密封す
るためのＯリング１０４が配置されている。FIG. 1 is a sectional view of an air pressure sensor 100 according to an embodiment of the present invention. As shown in FIG. 1, an air pressure sensor 100 of the present invention includes a flange-shaped tip portion 101 that engages with a rim in a tire air chamber, and a tip portion that is connected to the tip portion and penetrates a rim opening. The case is constituted by the base end portion 102 having a small diameter and the sensor cover 103. A pressure switch, a circuit board, an oscillation coil, etc., which will be described later, are arranged in this case. Further, an O-ring 104 for sealing the inside of the tire when the air pressure sensor is attached to the rim of the tire is arranged on the flange surface 101A of the tip portion 101.
【００１０】また、リムのタイヤ外部側に突出した基端
部１０２の外周面に、先端部のフランジ面からの間隔
が、リムのタイヤ内部側のリム表面と先端部１０１のフ
ランジ面１０１Ａの間でＯリング１０４が潰れ、タイヤ
内の空気が密封される程度の間隔Ｌ、即ち、リムの肉厚
とＯリングの厚さを加えた間隔よりも若干小さい間隔Ｌ
を持って、リング状に切り欠き１０５が形成される。Further, on the outer peripheral surface of the base end portion 102 projecting to the outside of the tire of the rim, the distance from the flange surface of the tip portion is between the rim surface on the tire inner side of the rim and the flange surface 101A of the tip portion 101. At a distance L at which the O-ring 104 is crushed and the air inside the tire is sealed, that is, a distance L slightly smaller than the sum of the thickness of the rim and the thickness of the O-ring.
And the notch 105 is formed in a ring shape.
【００１１】空気圧センサ１００の開口端に配置される
センサカバ−１０３は、有底円筒状とされ、閉端部の略
中央部には、タイヤの空気室と連通させるための連通路
１０６が設けられている。センサカバ−１０３内には、
リン青銅のような金属等の導電性の材料で形成された可
動電極１０７が収納されている。この可動電極は、内外
の圧力差によって伸縮可能な蛇腹状のべロ−ズ１０７Ａ
と、このベロ−ズ１０７Ａの一端に電子ビ−ム等で溶接
されたダイヤフラム１０７Ｂとで構成されており、セン
サカバ−の開口側に配置されたスイッチハウジング１０
８にベロ−ズ１０７Ａの他端が電子ビ−ム溶接等で固定
され、電気的に接続さている。また、このスイッチハウ
ジング１０８へベロ−ズ１０７Ａが溶接されることによ
り、可動電極１０７及びスイッチハウジング１０８で形
成される空間が密封されている。また、この空気圧セン
サ１００の内壁でセンサカバ−１０３の先端部に略対向
する内周面にリング状に切り欠きを形成し、その切り欠
きとスイッチハウジング１０８との間には、Ｏリング１
０９が介在しており、内部圧力及び水分等の密封が達成
されている。The sensor cover 103 arranged at the open end of the air pressure sensor 100 has a cylindrical shape with a bottom, and a communication passage 106 for communicating with the air chamber of the tire is provided at a substantially central portion of the closed end. ing. In the sensor cover 103,
A movable electrode 107 formed of a conductive material such as metal such as phosphor bronze is housed. This movable electrode is a bellows-shaped bellows 107A that can expand and contract depending on the pressure difference between the inside and the outside.
And a diaphragm 107B welded to one end of the bellows 107A with an electronic beam or the like, and the switch housing 10 disposed on the opening side of the sensor cover.
8, the other end of the bellows 107A is fixed by electronic beam welding or the like and electrically connected. By welding the bellows 107A to the switch housing 108, the space formed by the movable electrode 107 and the switch housing 108 is sealed. A ring-shaped cutout is formed on the inner wall of the air pressure sensor 100 substantially opposite to the tip of the sensor cover 103, and an O-ring 1 is formed between the cutout and the switch housing 108.
09 is interposed, and the internal pressure and moisture are sealed.
【００１２】スイッチハウジング１０８は、ステンレス
のような金属等の導電性の材料で形成され、略円盤状と
されている。このスイッチハウジングには、略円筒状の
突出部１０８Ａが同軸的に形成されており、この突出部
が可動電極内に収納されている。また、この突出部と同
心状にゴム等の絶縁材料でた略円筒状の絶縁部１１０が
圧入されており、またこの絶縁部内には、更に、金属等
の導電材で形成され、内部に雌ネジ構造を有するネジ構
造部である略円筒状のガイド１１１が圧入されて同軸的
に配置されている。そして、このガイド１１１には、金
属等の導電性の材料で形成され、かつ外周に雄ねじ構造
を有する接点ネジ１１２がねじ込まれている。The switch housing 108 is formed of a conductive material such as metal such as stainless steel and has a substantially disc shape. A substantially cylindrical protrusion 108A is coaxially formed in the switch housing, and the protrusion is housed in the movable electrode. Further, a substantially cylindrical insulating portion 110 made of an insulating material such as rubber is press-fitted concentrically with the protruding portion, and the insulating portion is further formed of a conductive material such as metal and has a female inside. A substantially cylindrical guide 111 that is a screw structure portion having a screw structure is press-fitted and arranged coaxially. A contact screw 112 formed of a conductive material such as metal and having a male screw structure is screwed into the outer periphery of the guide 111.
【００１３】上記のスイッチハウジング１０８は、可動
電極１０７と共に調整室１１３を形成しており、また、
センサカバ−１０３、可動電極１０７及びスイッチハウ
ジング１０８の一部とで気密室１１４が形成されてい
る。調整室１１３の内圧は、通常はセンサカバ−の連通
路１０６をかいしてタイヤの内圧と同一の圧力に保たれ
ている気密室１１４の内圧よりも低く設定されている。
また、接点ネジ１１２は、タイヤの内圧が所定値以上で
ある場合には接点ネジ方向の力を受け可動電極１０７と
接触し、且つ、タイヤの内圧が所定値未満となった場合
には、タイヤの内圧低下に伴う気密室１１４の内圧の低
下により、可動電極１０７と非接触状態になるように、
位置決めされている。The switch housing 108 forms an adjusting chamber 113 together with the movable electrode 107, and
An airtight chamber 114 is formed by the sensor cover 103, the movable electrode 107 and a part of the switch housing 108. The internal pressure of the adjustment chamber 113 is usually set lower than the internal pressure of the airtight chamber 114 which is kept at the same pressure as the internal pressure of the tire through the communication passage 106 of the sensor cover.
Further, the contact screw 112 receives a force in the direction of the contact screw and contacts the movable electrode 107 when the inner pressure of the tire is equal to or higher than a predetermined value, and when the inner pressure of the tire is lower than the predetermined value, Since the internal pressure of the airtight chamber 114 is decreased due to the decrease of the internal pressure of the
It is positioned.
【００１４】スイッチハウジングの前記可動電極と反対
に位置する場所に、円盤状のプリント基盤１１５が配置
されている。プリント基盤１１５の略中央部及び周縁部
側のは、それぞれ貫通孔が形成されており、図５に示す
ように、これらの貫通孔内には、回路基盤の導体の一部
を構成し、かつ導電材で構成された略円筒状のソケット
１１５Ａ、１１５Ｂがそれぞれ固定されている。ソケッ
ト１１５Ａ内には接点ネジ１１２の他端が差し込まれて
おり、これにより接点ネジが電気的に接触するようにな
っている。また、ソケット１１５Ｂ内には、スイッチハ
ウジング１０８に形成された有底孔１１６に一端が挿入
され、導電性の材料で形成された略棒状の接続ピン１１
７の他端が差し込まれている。これにより、スイッチハ
ウジングとプリント基板１１５とを電気的に接続してい
る。A disk-shaped printed board 115 is arranged at a position opposite to the movable electrode of the switch housing. Through holes are formed in each of the substantially central portion and the peripheral portion side of the printed board 115, and as shown in FIG. 5, a part of the conductor of the circuit board is formed in these through holes, and The substantially cylindrical sockets 115A and 115B made of a conductive material are fixed. The other end of the contact screw 112 is inserted into the socket 115A so that the contact screw is in electrical contact. Further, in the socket 115B, one end is inserted into a bottomed hole 116 formed in the switch housing 108, and the substantially rod-shaped connection pin 11 formed of a conductive material.
The other end of 7 is plugged. As a result, the switch housing and the printed circuit board 115 are electrically connected.
【００１５】更に、プリント基板上には、車体側に固定
されてる送受信回路から送信される電磁波を受信しエコ
−信号を発生するコイル１１８が固定されている。ま
た、プリント基板のセンサカバ−側の面の対抗する位置
には、コンデンサが半田付けされ発振回路が構成されて
いる。Further, a coil 118 for receiving an electromagnetic wave transmitted from a transmission / reception circuit fixed to the vehicle body and generating an echo signal is fixed on the printed circuit board. In addition, a capacitor is soldered at a position facing the sensor cover side surface of the printed circuit board to form an oscillation circuit.
【００１６】以上の空気圧センサの動作を以下に説明す
る。上記のように、調整室１１３の内圧は、通常はセン
サカバ−１０３の連通路１０６をかいしてタイヤの内圧
と同一の圧力に保たれている気密室の内圧よりも低く設
定されている。また、接点ネジ１１２は、タイヤの内圧
が所定値以上である場合には接点ネジ方向の力を受ける
可動電極と接触し、且つ、タイヤの内圧が所定値未満と
なった場合には、タイヤの内圧低下に伴う気密室の内圧
の低下による可動電極と非接触状態になるように、位置
決めされている。従って、タイヤが正常圧である時には
接点ネジ１１２と可動電極１０７とで構成された、圧力
スイッチがオン状態となり、タイヤの内圧が所定値未満
となった時には、圧力スイッチはオフ状態となる。これ
により、車体側に取り付けられたタイヤ空気圧検出装置
の送受信ユニットに接続されたアンテナコイルから空気
圧センサ１００にむけて投射された電磁波に対する空気
圧センサからのエコ−信号の周波数が変化し、タイヤ内
の空気圧低下が検出される。The operation of the above air pressure sensor will be described below. As described above, the internal pressure of the adjustment chamber 113 is normally set to be lower than the internal pressure of the airtight chamber which is maintained at the same pressure as the internal pressure of the tire through the communication passage 106 of the sensor cover 103. The contact screw 112 contacts the movable electrode that receives a force in the contact screw direction when the tire internal pressure is equal to or higher than a predetermined value, and when the tire internal pressure is less than the predetermined value, It is positioned so as to be in non-contact with the movable electrode due to the decrease in the internal pressure of the hermetic chamber due to the decrease in the internal pressure. Therefore, when the tire has a normal pressure, the pressure switch constituted by the contact screw 112 and the movable electrode 107 is turned on, and when the internal pressure of the tire is less than the predetermined value, the pressure switch is turned off. As a result, the frequency of the eco-signal from the air pressure sensor with respect to the electromagnetic waves projected toward the air pressure sensor 100 from the antenna coil connected to the transmission / reception unit of the tire air pressure detection device mounted on the vehicle body side changes, and Low air pressure is detected.
【００１７】図２及び図３は本発明の実施例に係る空気
圧センサのホイ−ルリムへの取り付けを示した概略断面
図及び平面図である。図２に示すように、上記空気圧セ
ンサ１００は、車体側のブレ−キカバ−に取り付けられ
たアンテナコイルに対向する位置のリム２上にリム開口
部が開けられ、そのリム開口部に空気圧センサが取り付
けられる。空気圧センサの取り付けは、Ｏリング１０４
を空気圧センサ１００の基端部１０２に通しておき、こ
の状態でタイヤ内部側２Ａからリム孔に基端部１０２を
貫通させる。この時前述のＯリング１０４はリムの内周
面と空気圧センサ先端部のフランジ面１０１Ａとの間に
挟まれているので、空気圧センサの先端部１０１をリム
の内周面にＯリング１０４がしっかり潰れるように押さ
えつけることでタイヤ内の空気を密封できる。そして、
基端部１０２の、タイヤ外部側２Ｂに突出した部分に形
成された切り欠き１０５にストップリング２００をはめ
込み空気圧センサ１００を固定する。尚、空気圧センサ
１００の基端部１０２に形成された切り欠き１０５はＯ
リング１０４の潰し代がとれるように、先端部１０１の
フランジ面１０１Ａから切り欠き１０５までの長さＬ
は、リムの肉厚とＯリングの厚さを加えた長さより若干
小さくしておくことが望ましい。2 and 3 are a schematic sectional view and a plan view showing the mounting of the air pressure sensor according to the embodiment of the present invention on a wheel rim. As shown in FIG. 2, in the air pressure sensor 100, a rim opening is formed on the rim 2 at a position facing the antenna coil attached to the brake cover on the vehicle body side, and the air pressure sensor is provided in the rim opening. It is attached. Install the air pressure sensor using the O-ring 104
Is passed through the base end portion 102 of the air pressure sensor 100, and in this state, the base end portion 102 is made to penetrate from the tire inner side 2A to the rim hole. At this time, since the above-mentioned O-ring 104 is sandwiched between the inner peripheral surface of the rim and the flange surface 101A of the tip of the air pressure sensor, the O-ring 104 is firmly attached to the inner peripheral surface of the rim with the tip 101 of the air pressure sensor. The air inside the tire can be sealed by pressing it so that it collapses. And
A stop ring 200 is fitted in a notch 105 formed in a portion of the base end portion 102 that protrudes to the tire outer side 2B to fix the air pressure sensor 100. The notch 105 formed in the base end portion 102 of the air pressure sensor 100 is O-shaped.
The length L from the flange surface 101A of the tip portion 101 to the notch 105 so that the crushing margin of the ring 104 can be taken.
Is preferably slightly smaller than the total length of the rim thickness and the O-ring thickness.
【００１８】上記ストップリングを４図に示す。このス
トップリング２００はホイ−ルのリムを空気圧センサの
先端部フランジ面と上記ストップリングで挟み込むこと
でタイヤ空気圧検出センサのリムへの固定とタイヤ内の
空気の密封を行うので、切り欠き１０５から十分周方向
に突出する外径と空気圧センサを挟持するに十分な強度
をもつような例えば、バネ鋼等によって構成されてい
る。The stop ring is shown in FIG. This stop ring 200 fixes the tire air pressure detection sensor to the rim and seals the air inside the tire by sandwiching the wheel rim with the front end flange surface of the air pressure sensor and the above stop ring, so that the notch 105 It is made of, for example, spring steel or the like having a sufficient outer diameter that projects in the circumferential direction and a sufficient strength to hold the air pressure sensor.
【００１９】[0019]
【発明の効果】本発明の空気圧センサは上記構成とした
ため、空気圧センサやリムにネジを切る必要が無く、ま
た、専用のナットを使う必要も無い為、センサ本体をコ
ンパクト出来ると共に、リムへの取り付け加工作業が極
めて容易で、かつ安価になる。Since the air pressure sensor of the present invention has the above-mentioned structure, it is not necessary to screw the air pressure sensor and the rim, and it is not necessary to use a dedicated nut. The mounting work is extremely easy and inexpensive.
【図１】図１は本発明の実施例に係る空気圧センサの断
面図である。FIG. 1 is a cross-sectional view of an air pressure sensor according to an embodiment of the present invention.
【図２】図２は本発明の実施例に係る空気圧センサをリ
ムへ取り付けたときの概略断面図である。FIG. 2 is a schematic cross-sectional view when an air pressure sensor according to an embodiment of the present invention is attached to a rim.
【図３】図３は本発明の実施例に係る空気圧センサをリ
ムへ取り付けた状態でのタイヤ外部側から見た平面図で
ある。FIG. 3 is a plan view seen from the outside of the tire with the air pressure sensor according to the embodiment of the present invention attached to a rim.
【図４】図４は本発明の実施例に係る空気圧センサをリ
ムの固定する為のストップリングを示した平面図であ
る。FIG. 4 is a plan view showing a stop ring for fixing the rim of the air pressure sensor according to the embodiment of the present invention.
【図５】図５は本発明の実施例に係る空気圧センサを含
む内圧警報装置の構成を示す図を示す。FIG. 5 is a diagram showing a configuration of an internal pressure alarm device including an air pressure sensor according to an embodiment of the present invention.
【図６】図６は従来の空気圧センサを示す概略側面図で
ある。FIG. 6 is a schematic side view showing a conventional air pressure sensor.
【図７】図７は従来の空気圧センサの別例を示す概略側
面図である。FIG. 7 is a schematic side view showing another example of a conventional air pressure sensor.
１００ タイヤ用空気圧検出センサ １０１ 先端部 １０２ 基端部 １０４ Ｏリング １０５ 切り欠き ２００ ストップリング 100 Tire Pressure Detection Sensor 101 Tip 102 Base End 104 O-ring 105 Notch 200 Stop Ring
Claims (1)
貫通して取り付けられ、タイヤ空気室内の空気圧を検出
するタイヤ用空気圧センサにおいて、タイヤ空気室内で
リムに係合するフランジ状の先端部と、この先端部に連
設されリム開口部を貫通する前記先端部より外径の小さ
い基端部と、前記基端部の外周面に形成されたリング状
の切り欠きと、この切り欠きにはめ込まれ、前記先端部
との間で前記タイヤ用空気圧センサをリムに挟持させる
為の拡径自在のストップリングとを備えた事を特徴とす
るタイヤ用空気圧センサ。1. A tire air pressure sensor for penetrating a rim opening formed in a rim of a wheel to detect an air pressure in a tire air chamber, the flange having a flange shape engaging with the rim in the tire air chamber. A tip end portion, a base end portion that is connected to the tip end portion and penetrates the rim opening, and has a smaller outer diameter than the tip end portion; a ring-shaped notch formed on the outer peripheral surface of the base end portion; A tire air pressure sensor fitted in the notch, comprising a stop ring that can be expanded in diameter for holding the tire air pressure sensor on a rim between the tip end portion and the end portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7021443A JPH08207522A (en) | 1995-02-09 | 1995-02-09 | Pneumatic sensor for tire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7021443A JPH08207522A (en) | 1995-02-09 | 1995-02-09 | Pneumatic sensor for tire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08207522A true JPH08207522A (en) | 1996-08-13 |
Family
ID=12055116
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7021443A Pending JPH08207522A (en) | 1995-02-09 | 1995-02-09 | Pneumatic sensor for tire |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08207522A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7242284B2 (en) | 2004-02-26 | 2007-07-10 | Denso Corporation | Tire condition detecting device, tire condition monitoring system, and method of attaching tire condition detecting device to tire wheel |
| WO2012112157A1 (en) * | 2011-02-17 | 2012-08-23 | Dill Air Controls Products, Llc | Tire monitoring systems and methods |
| WO2013046832A1 (en) * | 2011-09-30 | 2013-04-04 | 横浜ゴム株式会社 | Sensor housing container for pneumatic fender, and pneumatic fender |
| US8576059B2 (en) | 2011-02-17 | 2013-11-05 | Dill Air Controls Products, Llc | Tire monitoring systems and methods |
| CN109990988A (en) * | 2017-12-29 | 2019-07-09 | 上海共联通信信息发展有限公司 | A kind of 4G wireless base station device board performance testing device |
-
1995
- 1995-02-09 JP JP7021443A patent/JPH08207522A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7242284B2 (en) | 2004-02-26 | 2007-07-10 | Denso Corporation | Tire condition detecting device, tire condition monitoring system, and method of attaching tire condition detecting device to tire wheel |
| WO2012112157A1 (en) * | 2011-02-17 | 2012-08-23 | Dill Air Controls Products, Llc | Tire monitoring systems and methods |
| US8576059B2 (en) | 2011-02-17 | 2013-11-05 | Dill Air Controls Products, Llc | Tire monitoring systems and methods |
| WO2013046832A1 (en) * | 2011-09-30 | 2013-04-04 | 横浜ゴム株式会社 | Sensor housing container for pneumatic fender, and pneumatic fender |
| JP2013076609A (en) * | 2011-09-30 | 2013-04-25 | Yokohama Rubber Co Ltd:The | Sensor storage container for pneumatic fender and pneumatic fender |
| KR101383147B1 (en) * | 2011-09-30 | 2014-04-08 | 요코하마 고무 가부시키가이샤 | Sensor housing container for pneumatic fender, and pneumatic fender |
| CN103842788A (en) * | 2011-09-30 | 2014-06-04 | 横滨橡胶株式会社 | Sensor housing container for pneumatic fender, and pneumatic fender |
| US9352811B2 (en) | 2011-09-30 | 2016-05-31 | The Yokohama Rubber Co., Ltd. | Sensor accommodation container for a pneumatic fender and pneumatic fender |
| CN109990988A (en) * | 2017-12-29 | 2019-07-09 | 上海共联通信信息发展有限公司 | A kind of 4G wireless base station device board performance testing device |
| CN109990988B (en) * | 2017-12-29 | 2023-11-07 | 上海共联通信信息发展有限公司 | Board card performance testing device for 4G wireless base station equipment |
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