JP4982633B2 - Tire pressure warning device - Google Patents

Tire pressure warning device Download PDF

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JP4982633B2
JP4982633B2 JP2006126343A JP2006126343A JP4982633B2 JP 4982633 B2 JP4982633 B2 JP 4982633B2 JP 2006126343 A JP2006126343 A JP 2006126343A JP 2006126343 A JP2006126343 A JP 2006126343A JP 4982633 B2 JP4982633 B2 JP 4982633B2
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pressure
introduction path
tire
path
internal pressure
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JP2007296966A (en
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滋 山口
孝夫 國分
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Bridgestone Corp
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Bridgestone Corp
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Description

本発明は、タイヤの内圧を検出する圧力センサをケーシング内に内蔵し、このケーシングの外表面に形成された入り口から前記圧力センサの感圧部に前記内圧を導入する圧力導入路を設けたタイヤ内圧警報装置に関する。   The present invention is a tire in which a pressure sensor for detecting an internal pressure of a tire is incorporated in a casing, and a pressure introduction path is provided for introducing the internal pressure from an inlet formed on the outer surface of the casing to a pressure-sensitive portion of the pressure sensor. The present invention relates to an internal pressure alarm device.

従来から、車両のリムに取り付けられて、タイヤの内圧を検出し、この内圧に関する情報を、電波により、車体側に設けた受信機に送信するタイヤ内圧警報装置は広く知られており（例えば、特許文献１参照）、このような装置を用いたシステムでは、受信機で受信したタイヤ内圧に関する情報に基づいて、内圧の異常を運転者に知らせることができる。   2. Description of the Related Art Conventionally, tire internal pressure alarm devices that are attached to a rim of a vehicle, detect the internal pressure of a tire, and transmit information related to the internal pressure to a receiver provided on the vehicle body side by radio waves are widely known (for example, In a system using such a device, it is possible to notify the driver of an abnormality in the internal pressure based on the information related to the tire internal pressure received by the receiver.

このようなタイヤ内圧警報装置は、タイヤの内圧を検知する圧力センサと、検知した圧力信号を、車体側に設けられた受信機に電波として発信する送信部や、圧力信号を送信する制御を行う制御部等を搭載する電子基板等をケーシング内に配置して構成される。そして、圧力センサの感圧部には、タイヤの内圧を加えるための内圧導入路が形成されている。
特開２００４−３１４９２４号公報 Such a tire internal pressure warning device performs a control to transmit a pressure sensor that detects the internal pressure of the tire, a transmission unit that transmits the detected pressure signal as a radio wave to a receiver provided on the vehicle body side, and a pressure signal. An electronic board or the like on which a control unit or the like is mounted is arranged in a casing. And the internal pressure introduction path for applying the internal pressure of a tire is formed in the pressure sensitive part of the pressure sensor.
JP 2004-314924 A

しかしながら、従来の内圧導入路は、タイヤ内の液体や異物がこの導入路内に進入して圧力センサの感圧部を破損する虞があり、この点において改良が求められていた。   However, in the conventional internal pressure introduction path, there is a risk that liquid or foreign matter in the tire may enter the introduction path and damage the pressure-sensitive portion of the pressure sensor.

本発明は、このような問題点に鑑みてなされたものであり、タイヤ内の液体や異物が直接、圧力センサの感圧部に到達して圧力センサを破損するのを抑制することのできるタイヤ内圧警報装置を提供することを目的とする。   The present invention has been made in view of such problems, and a tire capable of suppressing the liquid or foreign matter in the tire from directly reaching the pressure-sensitive portion of the pressure sensor and damaging the pressure sensor. An object is to provide an internal pressure alarm device.

＜１＞は、タイヤの内圧を検出する圧力センサをケーシング内に内蔵し、このケーシングの外表面に形成された入り口から前記圧力センサの感圧部に前記内圧を導入する圧力導入路を設けたタイヤ内圧警報装置において、前記圧力導入路を、迂回通路で構成してなり、前記圧力導入路を画成する壁部は、その入り口から前記感圧部に向かうパスの進行方向に直交する壁面部分を具え、前記圧力導入路は、少なくとも、滑らかに延在する主パス部分と、この主パス部分から直角に分岐する分岐パスとを有してなるタイヤ内圧警報装置である。 <1> includes a pressure sensor that detects the internal pressure of the tire in the casing, and a pressure introduction path that introduces the internal pressure from the entrance formed on the outer surface of the casing to the pressure-sensitive portion of the pressure sensor. In the tire internal pressure warning device, the pressure introduction path is constituted by a bypass path, and the wall part defining the pressure introduction path is a wall surface part orthogonal to the traveling direction of the path from the entrance to the pressure sensitive part The pressure introduction path is a tire internal pressure alarm device having at least a main path portion that extends smoothly and a branch path that branches at right angles from the main path portion .

＜２＞は、＜１＞において、前記圧力導入路は少なくとも２つの入り口を有してなるタイヤ内圧警報装置である。 <2> is a tire internal pressure alarm device according to <1> , wherein the pressure introduction path has at least two inlets.

＜３＞は、＜１＞または＜２＞において、前記ケーシングの一部を、交換可能なアタッチメントで構成し、このアタッチメントに前記圧力導入路を形成してなるタイヤ内圧警報装置である。 <3> is a tire internal pressure alarm device in which a part of the casing is configured with a replaceable attachment in <1> or <2> , and the pressure introduction path is formed in the attachment.

＜１＞によれば、圧力導入路を、迂回通路で構成したので、タイヤ内の液体や異物が直接、圧力センサの感圧部まで到達する可能性を減少させることができ、圧力センサを破損するのを抑制することができる。
また、圧力導入路を画成する壁部は、その入り口から前記感圧部に向かうパスの進行方向に直交する壁面部分を具えるので、前記液体や異物は、その直交する壁面にぶつかって、これらが、前記感圧部にまで到達するのをさらに抑えることができる。
また、前記圧力導入路は、少なくとも、滑らかに延在する主パス部分と、この主パス部分から直角に分岐する分岐パスとを有するので、液体や異物が、分岐パスに入る可能性は低く、このことによって、これらが、前記感圧部にまで到達する可能性をなお一層減じることができる。 According to <1>, since the pressure introduction path is constituted by a bypass path, the possibility of liquid or foreign matter in the tire directly reaching the pressure sensor of the pressure sensor can be reduced, and the pressure sensor is damaged. Can be suppressed.
Further, since the wall portion defining the pressure introduction path includes a wall surface portion orthogonal to the traveling direction of the path from the entrance to the pressure sensitive portion, the liquid and the foreign matter collide with the orthogonal wall surface, These can further suppress reaching the pressure sensitive part.
Further, since the pressure introduction path has at least a main path portion that extends smoothly and a branch path that branches at right angles from the main path portion, there is a low possibility that liquid or foreign matter enters the branch path. This can further reduce the possibility that they will reach the pressure sensitive part.

＜２＞によれば、前記圧力導入路は少なくとも２つの入り口を有するので、タイヤの内圧を抜いて、タイヤ内圧警報装置を保守するに際し、一方の入り口から高圧の空気を流入させ、他方の口からその空気を排気することによって、圧力導入路に蓄積した液体や異物を清掃することができる。 <2> According to <2> , since the pressure introduction path has at least two inlets, when the tire internal pressure is released and the tire internal pressure alarm device is maintained, high-pressure air is introduced from one of the inlets, By exhausting the air from the liquid, it is possible to clean the liquid and foreign matter accumulated in the pressure introduction path.

＜３＞によれば、前記ケーシングの一部を、交換可能なアタッチメントで構成し、このアタッチメントに前記圧力導入路を形成したので、圧力センサの種類に応じてアタッチメントを取り替えることにより、種々の圧力センサに対応させることができ、さらに、アタッチメントを分解可能にすることによって圧力導入路の清掃を一層容易なものにすることができる。 <3> According to <3> , a part of the casing is configured with a replaceable attachment, and the pressure introduction path is formed in the attachment, so that various pressures can be obtained by replacing the attachment according to the type of the pressure sensor. Further, the pressure introduction path can be more easily cleaned by allowing the attachment to be disassembled.

本発明の実施形態について、図に基づいて説明する。図１は、本発明に係る実施形態の内圧警報装置を示す概略断面図、図２は、図１の”b”を拡大して示す断面図であり、タイヤ内圧警報装置１０は、タイヤの内圧を検知する圧力センサ１と、電子基板３と、これらの部分に電気を供給する電池４とを、ケーシング２内に内蔵して構成される。そして、これらの圧力センサ１、電子基板３、電池４は、周囲を樹脂９でポッティングされてケーシング２に固定されている。   Embodiments of the present invention will be described with reference to the drawings. 1 is a schematic cross-sectional view showing an internal pressure alarm device according to an embodiment of the present invention, FIG. 2 is an enlarged cross-sectional view showing “b” in FIG. 1, and a tire internal pressure alarm device 10 is an internal pressure of a tire. The pressure sensor 1, the electronic substrate 3, and the battery 4 for supplying electricity to these parts are built in the casing 2. The pressure sensor 1, the electronic board 3, and the battery 4 are fixed to the casing 2 by potting the periphery with a resin 9.

また、ケーシング２の、圧力センサ１の位置に対応する部分には、アタッチメント２０が交換可能に組み付けられ、アタッチメント２０は、ケーシング２に設けられた穴に嵌入される外側部１２と、その内側にはめ込まれた内側部１１とで構成され、圧力センサ１と内側部１１との間には、感圧部となるダイヤフラム８が取り付けられる。   In addition, an attachment 20 is assembled to a portion of the casing 2 corresponding to the position of the pressure sensor 1 in an exchangeable manner, and the attachment 20 has an outer portion 12 fitted into a hole provided in the casing 2 and an inner side thereof. A diaphragm 8 serving as a pressure-sensitive part is attached between the pressure sensor 1 and the inner part 11.

内側部１１には、ダイヤフラム８に圧力を導くための穴２５が形成され、また、外側部１２の、内側部１１と隣接する面１２ａには、タイヤの内圧を圧力センサ１の感圧部８に導く圧力導入路２１が形成されている。   A hole 25 for guiding pressure to the diaphragm 8 is formed in the inner portion 11, and the inner pressure of the tire is measured on the surface 12 a of the outer portion 12 adjacent to the inner portion 11. A pressure introduction path 21 is formed to lead to

図３は、この外側部１２を、取付状態における内圧警報装置１０の内側から見たときの平面図であり、外側部１２は、圧力導入路２１に空気を導入する入り口として機能する貫通穴６ａ、６ｂが２カ所設けられ、これらの貫通穴６ａ、６ｂに連続して圧力導入路２１が形成されている。圧力導入路２１は、貫通穴６ａ、６ｂを起点として、壁部２２ａ、２２ｂ、２３ａ、２３ｂ、２４ａ、２４ｂを迂回し、内側部１１の穴２５を通過して圧力センサ１の感圧部８に達する迂回通路で構成される。   FIG. 3 is a plan view of the outer portion 12 when viewed from the inside of the internal pressure alarm device 10 in the mounted state. The outer portion 12 has a through hole 6a that functions as an inlet for introducing air into the pressure introduction path 21. , 6b are provided at two locations, and a pressure introduction path 21 is formed continuously to these through holes 6a, 6b. The pressure introduction path 21 starts from the through holes 6a and 6b, bypasses the walls 22a, 22b, 23a, 23b, 24a, and 24b, passes through the hole 25 in the inner portion 11, and passes through the hole 25 in the pressure sensor 1. It consists of a detour passage that reaches

ここで、圧力導入路２１は入り口となる貫通穴６ａ、６ｂから、感圧部８に至るまでの流路の１カ所以上に、流路の進行方向に対して直交する壁面部分が設けられ、このことによって、空気中の液体や異物が感圧部８に到達するのを抑制しており、図示の場合、壁面部分３１（内側部１１の外表面）、壁面部分３２、３３がこれに該当する。   Here, the pressure introduction path 21 is provided with a wall surface portion orthogonal to the traveling direction of the flow path at one or more locations of the flow path from the through holes 6a and 6b serving as the inlets to the pressure sensing portion 8, In this way, the liquid or foreign matter in the air is prevented from reaching the pressure-sensitive portion 8, and in the illustrated case, the wall surface portion 31 (the outer surface of the inner portion 11) and the wall surface portions 32 and 33 correspond to this. To do.

また、圧力導入路２１は滑らかに延在する主パス部分４１、４３、４５から分岐して感圧部８に向かう分岐パス部分４２、４４、４６を具え、このことによっても、空気中の液体や異物が感圧部８に到達するのを一層抑制することができる。   Further, the pressure introduction path 21 includes branch path portions 42, 44, and 46 that branch from the smoothly extending main path portions 41, 43, and 45 toward the pressure-sensitive portion 8, and this also allows liquid in the air to flow. Or foreign matter can reach the pressure-sensitive portion 8 even more.

なお、圧力導入路２１を、ケーシング２から取り外し可能なアタッチメント２０内に設けたので、種々の圧力センサ１に容易に対応させることができ、また、圧力導入路２１の内部の清掃も、例えば、アタッチメント２０をケーシング２から取り外し、外側部１２と内側部１１とを分解することにより、容易に行うことができる。   In addition, since the pressure introduction path 21 is provided in the attachment 20 that can be detached from the casing 2, it can be easily adapted to various pressure sensors 1, and cleaning of the inside of the pressure introduction path 21 can be performed, for example, This can be easily performed by removing the attachment 20 from the casing 2 and disassembling the outer portion 12 and the inner portion 11.

また、圧力導入路２１は、２カ所の貫通穴６ａ、６ｂを入り口としており、このことによって、一方の入り口から高圧空気を流入させ、他方の入り口からその空気を流出させることによって、圧力導入路２１ないをブローして清掃することも容易に行わせることができる。   Further, the pressure introduction path 21 has two through holes 6a and 6b as inlets. By this, high pressure air is introduced from one inlet and the air is caused to flow out from the other entrance. It is also possible to easily perform cleaning by blowing 21.

本発明は、車輪に取り付けられる種々の圧力センサに適用することができる。   The present invention can be applied to various pressure sensors attached to wheels.

本発明に係る実施形態のタイヤ内圧警報装置を示す断面図である。It is sectional drawing which shows the tire internal pressure alarm apparatus of embodiment which concerns on this invention. 図３における”b”部に対応する部分詳細図である。FIG. 4 is a partial detail view corresponding to a “b” portion in FIG. 3. アタッチメントの外側を示す平面図である。It is a top view which shows the outer side of an attachment.

符号の説明Explanation of symbols

１ 圧力センサ
２ ケーシング
３ 電子基板
４ 電池
８ ダイヤフラム（感圧部）
９ 樹脂
１０ タイヤ内圧警報装置
１１ 内側部
１２ 外側部
１２ａ 外側部の、内側部と隣接する面
２０ アタッチメント
２１ 圧力導入路
２２ａ、２２ｂ 壁部
２３ａ、２３ｂ 壁部
２４ａ、２４ｂ 壁部
２５ 穴
３１、３２、３３ 圧力導入路の進行方向に直角な壁面部分
４１、４３、４５ 主パス部分
４２、４４、４６ 分岐パス部分 DESCRIPTION OF SYMBOLS 1 Pressure sensor 2 Casing 3 Electronic substrate 4 Battery 8 Diaphragm (pressure-sensitive part)
DESCRIPTION OF SYMBOLS 9 Resin 10 Tire internal pressure alarm device 11 Inner part 12 Outer part 12a The surface of the outer part adjacent to the inner part 20 Attachment 21 Pressure introduction path 22a, 22b Wall part 23a, 23b Wall part 24a, 24b Wall part 25 Hole 31, 32 , 33 Wall surface portion perpendicular to the traveling direction of the pressure introduction path 41, 43, 45 Main path portion 42, 44, 46 Branch path portion

Claims (3)

タイヤの内圧を検出する圧力センサをケーシング内に内蔵し、このケーシングの外表面に形成された入り口から前記圧力センサの感圧部に前記内圧を導入する圧力導入路を設けたタイヤ内圧警報装置において、前記圧力導入路を、迂回通路で構成してなり、前記圧力導入路を画成する壁部は、その入り口から前記感圧部に向かうパスの進行方向に直交する壁面部分を具え、前記圧力導入路は、少なくとも、滑らかに延在する主パス部分と、この主パス部分から直角に分岐する分岐パスとを有してなるタイヤ内圧警報装置。 In a tire internal pressure alarm device including a pressure sensor for detecting an internal pressure of a tire in a casing and provided with a pressure introduction path for introducing the internal pressure from an inlet formed on an outer surface of the casing to a pressure-sensitive portion of the pressure sensor. The pressure introduction path is constituted by a bypass passage, and the wall portion defining the pressure introduction path includes a wall surface portion orthogonal to the traveling direction of the path from the entrance to the pressure sensing portion, and the pressure The tire internal pressure warning device , wherein the introduction path includes at least a main path portion that extends smoothly and a branch path that branches at right angles from the main path portion . 前記圧力導入路は少なくとも２つの入り口を有してなる請求項１に記載のタイヤ内圧警報装置。 The tire pressure alarm device according to claim 1 , wherein the pressure introduction path has at least two inlets. 前記ケーシングの一部を、交換可能なアタッチメントで構成し、このアタッチメントに前記圧力導入路を形成してなる請求項１または２に記載のタイヤ内圧警報装置。 The tire internal pressure alarm device according to claim 1 or 2 , wherein a part of the casing is constituted by a replaceable attachment, and the pressure introduction path is formed in the attachment.
JP2006126343A 2006-04-28 2006-04-28 Tire pressure warning device Expired - Fee Related JP4982633B2 (en)

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Publication number Priority date Publication date Assignee Title
JP2007326475A (en) 2006-06-08 2007-12-20 Yokowo Co Ltd Tire air pressure sensor
AU2007282416B2 (en) * 2006-08-11 2010-08-26 Bridgestone Corporation Tire internal pressure alarm device
JP5084198B2 (en) * 2006-08-11 2012-11-28 株式会社ブリヂストン Pressure sensor
JP4623229B1 (en) * 2009-11-16 2011-02-02 横浜ゴム株式会社 Transmitter for transmitting information on tire condition and tire condition monitoring system
JP5741002B2 (en) * 2011-01-19 2015-07-01 横浜ゴム株式会社 Tire condition acquisition device and tire condition monitoring system
EP3765314A4 (en) * 2018-03-16 2022-06-08 Wheels India Ltd A tire pressure monitoring adapter for off-highway wheels

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US6016102A (en) * 1999-01-29 2000-01-18 Eaton Corporation Pressure sensor housing
JP2003146033A (en) * 2001-11-15 2003-05-21 Bridgestone Corp Tire internal pressure alarm device

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