JP6672843B2

JP6672843B2 - Oil pressure sensor module

Info

Publication number: JP6672843B2
Application number: JP2016017201A
Authority: JP
Inventors: 朝華大澤; 弘宣若林; 俊晃中村; 洋立田
Original assignee: Nidec Tosok Corp
Current assignee: Nidec Tosok Corp
Priority date: 2016-02-01
Filing date: 2016-02-01
Publication date: 2020-03-25
Anticipated expiration: 2036-02-01
Also published as: JP2017138113A

Description

本発明は、油圧センサモジュールに関する。 The present invention relates to a hydraulic sensor module.

車両の自動変速機には、変速機構を制御するため、コントロールバルブ機構が設けられている。コントロールバルブ機構には、油圧センサ、油圧スイッチなどの電子部品が装着されており、コントロールバルブ機構は、バルブにおけるオイル室内の油圧を制御することで変速機構を制御する。例えば、油圧センサによりオイル室内の油圧を計測し、計測した油圧に応じた油圧制御により変速機構が制御される。 The automatic transmission of the vehicle is provided with a control valve mechanism for controlling the transmission mechanism. Electronic components such as a hydraulic sensor and a hydraulic switch are mounted on the control valve mechanism, and the control valve mechanism controls the transmission mechanism by controlling the oil pressure in the oil chamber of the valve. For example, the hydraulic pressure in the oil chamber is measured by a hydraulic pressure sensor, and the transmission mechanism is controlled by hydraulic pressure control according to the measured hydraulic pressure.

特開２００２− １２０９７号公報JP-A-2002-12097

油圧センサによりオイル室内の油圧等を計測する場合には、オイル室と外部との密閉構造が要求される。このため、コントロールバルブ機構への油圧センサの取付構造としては、オイル室が密閉される構造が必要となる。 When measuring the oil pressure or the like in the oil chamber by the oil pressure sensor, a closed structure between the oil chamber and the outside is required. Therefore, a structure for mounting the oil pressure sensor on the control valve mechanism requires a structure in which the oil chamber is sealed.

さらに、油圧センサに高圧の油圧が加わることもあるため、油圧による荷重に耐えられる高強度な取付構造が必要となる。このため、高強度にしようとして取付構造として補強する部材を設けるなどにより取付構造が大型化し、また重量化してしまうという問題があった。特に、油圧センサを高圧が発生するＣＶＴ等に搭載する場合、取付構造の大型化、重量化が顕著である。 Furthermore, since high pressure oil pressure may be applied to the oil pressure sensor, a high-strength mounting structure that can withstand a load due to the oil pressure is required. For this reason, there has been a problem that the mounting structure is increased in size and weight by providing a reinforcing member as the mounting structure to increase the strength. In particular, when the oil pressure sensor is mounted on a CVT or the like where high pressure is generated, the mounting structure is significantly increased in size and weight.

上記のような、コントロールバルブ機構への取付構造として高強度な密閉構造を要する点、および、取付構造の大型化、重量化の問題点は、油圧スイッチなど油圧を検出する電子部品にも当てはまる問題である。以下では、部品としての油圧センサ、油圧スイッチなど油圧を検出する電子部品を総称して「油圧センサ」と呼ぶ。 The need for a high-strength hermetic structure as the mounting structure to the control valve mechanism as described above, and the problem of increasing the size and weight of the mounting structure also apply to electronic components such as hydraulic switches that detect oil pressure. It is. Hereinafter, electronic components that detect oil pressure, such as a hydraulic pressure sensor and a hydraulic switch, are collectively referred to as “oil pressure sensors”.

本発明は、大型化、重量化せずに小型化および軽量化を図ることのできる取付構造を有する油圧センサモジュールを提供することを目的とする。 An object of the present invention is to provide a hydraulic sensor module having a mounting structure that can be reduced in size and weight without increasing the size and weight.

本発明の油圧センサモジュールは、内部に油路が設けられたバルブボディに油圧を検出するセンサ部が取り付けられた油圧センサモジュールであって、次のような構成を備えることを特徴とする。
（１）前記センサ部の下面に密着固定された柱状の取付部材。
（２）前記バルブボディに設けられ、前記取付部材が嵌め込まれる凹部。
（３）前記バルブボディに設けられ、少なくとも端部が前記取付部材の径方向に延び、前記凹部に繋がる前記油路。
（４）前記取付部材に設けられ、前記油路と繋がり、前記取付部材の軸を中心として径方向に放射状に複数設けられた横穴。
（５）前記取付部材に設けられ、前記横穴から軸方向上方に延び、前記センサ部の下面に
達する縦穴。
（６）前記取付部材の外周面全周又は前記凹部の内周面全周であって、前記横穴を挟んで
、軸方向の上側および下側に設けられた上側溝部および下側溝部。
（７）前記上側溝部および前記下側溝部に配置された環状のシール部材。
本発明の一態様は、上述の油圧センサモジュールあって、前記上側のシール部材により囲まれた部分の、軸方向に直交する平面への投影面積と、前記下側のシール部材により囲まれた部分の、軸方向に直交する平面への投影面積とが等しいことを特徴とする。
本発明の一態様は、上述の油圧センサモジュールあって、前記上側のシール部材により囲まれた部分の、軸方向に直交する平面への投影面積が、前記下側のシール部材により囲まれた部分の、軸方向に直交する平面への投影面積より大きいことを特徴とする。
本発明の一態様は、上述の油圧センサモジュールあって、前記上側のシール部材の径は、前記下側のシール部材の径より大きく、前記取付部材は、前記下側溝部が設けられた小径部と、前記上側溝部が設けられた大径部とを有し、前記凹部の内周面には、段差が設けられ、前記段差よりも前記凹部の軸方向上側の内径が、前記下側のシール部材の外径より大きいことを特徴とする。
本発明の一態様は、上述の油圧センサモジュールあって、前記凹部の内周面には、周方向に沿った内周溝が設けられ、前記内周溝は、周方向の少なくとも一部において前記バルブボディの油路と接続され、前記横穴と前記バルブボディの油路とを繋ぐことを特徴とする。
本発明の一態様は、上述の油圧センサモジュールあって、前記取付部材の外周面において、前記上側溝部と前記下側溝部との間に設けられ、前記バルブボディの油路と繋がる溝部を備え、前記横穴は、その一端の開口が前記溝部の底面に設けられ、前記溝部と繋がっていることを特徴とする。
本発明の一態様は、上述の油圧センサモジュールあって、前記取付部材は、前記大径部の軸方向上側に設けられ、前記大径部および前記凹部の径より径が大きい拡径部を有し、前記凹部の内周面には、前記バルブボディの油路の一端となる開口が設けられ、軸方向において、前記拡径部の下端から前記横穴までの距離と、前記バルブボディ上端から前記油路の開口までの距離とが等しくされ、前記拡径部の下端が前記凹部の上端に載っていることを特徴とする。
本発明の一態様は、上述の油圧センサモジュールあって、前記凹部は、前記段差より軸方向上側の径が前記大径部の外径と等しく、前記段差より軸方向下側の径が前記小径部の外径と等しく、前記バルブボディの油路の一端である開口は、前記凹部の内周面の、前記段差より軸方向上側に設けられ、前記溝部は、前記大径部に、軸方向において、当該大径部の下端から前記段差と前記開口との距離だけ離れて設けられ、前記大径部の下端が前記段差に載っていることを特徴とする。
本発明の一態様は、上述の油圧センサモジュールあって、前記取付部材内部に設けられ、前記横穴から軸方向下側に延びる下側穴を備え、前記縦穴の径が、前記下側穴の径より大きいことを特徴とする。
本発明の一態様は、上述の油圧センサモジュールあって、前記横穴は、前記取付部材の中心軸から径方向に２箇所以上設けられていることを特徴とする。
本発明の一態様は、上述の油圧センサモジュールあって、前記縦穴は、前記センサ部側で前記センサ部に向かって拡がる漏斗形状を有することを特徴とする。
本発明の一態様は、内部に油路が設けられたバルブボディに油圧を検出するセンサ部が取り付けられた油圧センサモジュールであって、前記センサ部の下面に密着固定された柱状の取付部材と、前記バルブボディに設けられ、前記取付部材が嵌め込まれる凹部と、前記バルブボディに設けられ、少なくとも端部が前記取付部材の径方向に延び、前記凹部に繋がる前記油路と、前記取付部材に設けられ、前記油路と繋がり、前記取付部材の側面から軸方向に向けて延びる横穴と、前記取付部材に設けられ、前記横穴から軸方向上方に延び、前記センサ部の下面に達する縦穴と、前記取付部材の外周面全周又は前記凹部の内周面全周であって、前記横穴を挟んで、軸方向の上側および下側に設けられた上側溝部および下側溝部と、前記上側溝部および前記下側溝部に配置された環状のシール部材と、前記上側のシール部材により囲まれた部分の、軸方向に直交する平面への投影面積が、前記下側のシール部材により囲まれた部分の、軸方向に直交する平面への投影面積より大きい前記取付部材と、前記取付部材は、前記下側溝部が設けられた小径部と、前記上側溝部が設けられた大径部とを有し、前記凹部の内周面には、段差が設けられ、前記段差よりも前記凹部の軸方向上側の内径が、前記下側のシール部材の外径より大きく、前記取付部材は、前記大径部の軸方向上側に設けられ、前記大径部および前記凹部の径より径が大きい拡径部を有し、前記凹部の内周面には、前記バルブボディの油路の一端となる開口が設けられ、軸方向において、前記拡径部の下端から前記横穴までの距離と、前記バルブボディ上端から前記油路の開口までの距離とが等しくされ、前記拡径部の下端が前記凹部の上端に載っていることを特徴とする。
本発明の一態様は、内部に油路が設けられたバルブボディに油圧を検出するセンサ部が取り付けられた油圧センサモジュールであって、前記センサ部の下面に密着固定された柱状の取付部材と、前記バルブボディに設けられ、前記取付部材が嵌め込まれる凹部と、前記バルブボディに設けられ、少なくとも端部が前記取付部材の径方向に延び、前記凹部に繋がる前記油路と、前記取付部材に設けられ、前記油路と繋がり、前記取付部材の側面から軸方向に向けて延びる横穴と、前記取付部材に設けられ、前記横穴から軸方向上方に延び、前記センサ部の下面に達する縦穴と、前記取付部材の外周面全周又は前記凹部の内周面全周であって、前記横穴を挟んで、軸方向の上側および下側に設けられた上側溝部および下側溝部と、前記上側溝部および前記下側溝部に配置された環状のシール部材と、前記上側のシール部材により囲まれた部分の、軸方向に直交する平面への投影面積が、前記下側のシール部材により囲まれた部分の、軸方向に直交する平面への投影面積より大きい前記取付部材と、前記取付部材は、前記下側溝部が設けられた小径部と、前記上側溝部が設けられた大径部とを有し、前記凹部の内周面には、段差が設けられ、前記段差よりも前記凹部の軸方向上側の内径が、前記下側のシール部材の外径より大きく、前記取付部材の外周面において、前記上側溝部と前記下側溝部との間に設けられ、前記バルブボディの油路と繋がる溝部を備え、前記横穴は、その一端の開口が前記溝部の底面に設けられ、前記溝部と繋がっており、前記凹部は、前記段差より軸方向上側の径が前記大径部の外径と等しく、前記段差より軸方向下側の径が前記小径部の外径と等しく、前記バルブボディの油路の一端である開口は、前記凹部の内周面の、前記段差より軸方向上側に設けられ、前記溝部は、前記大径部に、軸方向において、当該大径部の下端から前記段差と前記開口との距離だけ離れて設けられ、前記大径部の下端が前記段差に載っていることを特徴とする。
本発明の一態様は、内部に油路が設けられたバルブボディに油圧を検出するセンサ部が取り付けられた油圧センサモジュールであって、前記センサ部の下面に密着固定された柱状の取付部材と、前記バルブボディに設けられ、前記取付部材が嵌め込まれる凹部と、前記バルブボディに設けられ、少なくとも端部が前記取付部材の径方向に延び、前記凹部に繋がる前記油路と、前記取付部材に設けられ、前記油路と繋がり、前記取付部材の側面から軸方向に向けて延びる横穴と、前記取付部材に設けられ、前記横穴から軸方向上方に延び、前記センサ部の下面に達する縦穴と、前記取付部材の外周面全周又は前記凹部の内周面全周であって、前記横穴を挟んで、軸方向の上側および下側に設けられた上側溝部および下側溝部と、前記上側溝部および前記下側溝部に配置された環状のシール部材と、前記取付部材内部に設けられ、前記横穴から軸方向下側に延びる下側穴を備え、前記縦穴の径が、前記下側穴の径より大きいことを特徴とする。 A hydraulic sensor module according to the present invention is a hydraulic sensor module in which a sensor unit for detecting a hydraulic pressure is mounted on a valve body having an oil passage therein, and has the following configuration.
(1) A column-shaped mounting member tightly fixed to the lower surface of the sensor section.
(2) A recess provided in the valve body and into which the mounting member is fitted.
(3) The oil passage provided in the valve body, at least an end of which extends in a radial direction of the mounting member and is connected to the recess.
(4) A plurality of lateral holes provided in the mounting member, connected to the oil passage, and radially provided radially around the axis of the mounting member.
(5) A vertical hole provided in the mounting member, extending upward in the axial direction from the horizontal hole, and reaching the lower surface of the sensor unit.
(6) An upper groove portion and a lower groove portion provided on the upper side and the lower side in the axial direction with the lateral hole interposed therebetween on the entire outer peripheral surface of the mounting member or the entire inner peripheral surface of the concave portion.
(7) An annular seal member arranged in the upper groove portion and the lower groove portion.
One embodiment of the present invention is the above-described hydraulic sensor module, wherein a projected area of a portion surrounded by the upper seal member on a plane orthogonal to an axial direction and a portion surrounded by the lower seal member are provided. Is equal to the projected area on a plane orthogonal to the axial direction.
One embodiment of the present invention is the above-described hydraulic sensor module, wherein a projected area of a portion surrounded by the upper seal member on a plane orthogonal to the axial direction is a portion surrounded by the lower seal member. Is larger than the projected area on a plane orthogonal to the axial direction.
One aspect of the present invention is the above-described hydraulic sensor module, wherein the diameter of the upper seal member is larger than the diameter of the lower seal member, and the mounting member is a small-diameter portion provided with the lower groove portion. And a large-diameter portion provided with the upper groove portion, a step is provided on the inner peripheral surface of the recess, and an inner diameter of the recess in the axial direction above the step is lower than the lower portion. It is characterized by being larger than the outer diameter of the seal member.
One embodiment of the present invention is the above-described hydraulic sensor module, wherein an inner circumferential groove is provided on an inner circumferential surface of the concave portion along a circumferential direction, and the inner circumferential groove is formed in at least a part of the circumferential direction. It is connected to an oil passage of the valve body, and connects the side hole to the oil passage of the valve body.
One embodiment of the present invention is the above-described hydraulic sensor module, further including a groove provided on the outer peripheral surface of the mounting member, between the upper groove and the lower groove, and connected to an oil passage of the valve body. The lateral hole is characterized in that an opening at one end is provided on the bottom surface of the groove, and is connected to the groove.
One embodiment of the present invention is the above-described hydraulic sensor module, wherein the attachment member has an enlarged-diameter portion that is provided axially above the large-diameter portion and that has a diameter larger than the diameter of the large-diameter portion and the concave portion. An opening which is one end of an oil passage of the valve body is provided on an inner peripheral surface of the concave portion, and a distance from a lower end of the enlarged diameter portion to the lateral hole and an upper end of the valve body in an axial direction are provided. The distance to the opening of the oil passage is made equal, and the lower end of the enlarged diameter portion is placed on the upper end of the concave portion.
One embodiment of the present invention is the above-described hydraulic sensor module, wherein the concave portion has a diameter in the axial direction above the step is equal to the outer diameter of the large diameter portion, and a diameter in the axial direction below the step is the small diameter. An opening that is equal to the outer diameter of the portion and is one end of the oil passage of the valve body is provided axially above the step on the inner peripheral surface of the concave portion, and the groove portion is formed in the large diameter portion in the axial direction. , Is provided at a distance from the lower end of the large diameter portion by the distance between the step and the opening, and the lower end of the large diameter portion is placed on the step.
One embodiment of the present invention is the above-described hydraulic sensor module, wherein the hydraulic sensor module includes a lower hole provided inside the mounting member and extending axially downward from the horizontal hole, wherein the diameter of the vertical hole is the diameter of the lower hole. It is characterized by being larger.
One embodiment of the present invention is the above-described hydraulic sensor module, wherein the lateral hole is provided at two or more locations in a radial direction from a central axis of the mounting member.
One embodiment of the present invention is the above-described hydraulic sensor module, wherein the vertical hole has a funnel shape expanding toward the sensor unit on the sensor unit side.
One aspect of the present invention is a hydraulic sensor module in which a sensor unit for detecting oil pressure is attached to a valve body provided with an oil passage therein, and a column-shaped attachment member tightly fixed to a lower surface of the sensor unit. A concave portion provided in the valve body, into which the mounting member is fitted; and an oil passage provided in the valve body, at least one end of which extends in a radial direction of the mounting member and is connected to the concave portion; Provided, connected to the oil passage, a horizontal hole extending in the axial direction from the side surface of the mounting member, a vertical hole provided in the mounting member, extending axially upward from the horizontal hole, and reaching the lower surface of the sensor unit, An upper groove and a lower groove provided on the upper and lower sides in the axial direction with the lateral hole interposed therebetween, the upper groove being the entire outer peripheral surface of the mounting member or the entire inner peripheral surface of the concave portion; Part And an annular seal member disposed in the lower groove portion, and a portion surrounded by the lower seal member, the projected area of a portion surrounded by the upper seal member onto a plane orthogonal to the axial direction. The mounting member has a smaller diameter portion provided with the lower groove portion, and a larger diameter portion provided with the upper groove portion. A step is provided on the inner peripheral surface of the recess, an inner diameter of the recess in the axial direction above the step is larger than an outer diameter of the lower seal member, and the mounting member has a large diameter. An opening which is provided on the upper side in the axial direction of the portion and has a larger diameter than the large diameter portion and the diameter of the concave portion, and an inner peripheral surface of the concave portion has an opening serving as one end of an oil passage of the valve body. A distance from the lower end of the enlarged diameter portion to the lateral hole in the axial direction. When the distance from the valve body upper end to an opening of the oil passage is equal to the lower end of the enlarged diameter portion is equal to or resting on the upper end of the recess.
One aspect of the present invention is a hydraulic sensor module in which a sensor unit for detecting oil pressure is attached to a valve body provided with an oil passage therein, and a column-shaped attachment member tightly fixed to a lower surface of the sensor unit. A concave portion provided in the valve body, into which the mounting member is fitted; and an oil passage provided in the valve body, at least one end of which extends in a radial direction of the mounting member and is connected to the concave portion; Provided, connected to the oil passage, a horizontal hole extending in the axial direction from the side surface of the mounting member, a vertical hole provided in the mounting member, extending axially upward from the horizontal hole, and reaching the lower surface of the sensor unit, An upper groove and a lower groove provided on the upper and lower sides in the axial direction with the lateral hole interposed therebetween, the upper groove being the entire outer peripheral surface of the mounting member or the entire inner peripheral surface of the concave portion; Part And an annular seal member disposed in the lower groove portion, and a portion surrounded by the lower seal member, the projected area of a portion surrounded by the upper seal member onto a plane orthogonal to the axial direction. The mounting member has a smaller diameter portion provided with the lower groove portion, and a larger diameter portion provided with the upper groove portion. A step is provided on the inner peripheral surface of the concave portion, and the inner diameter of the concave portion above the concave portion in the axial direction is larger than the outer diameter of the lower seal member, and on the outer peripheral surface of the mounting member, A groove is provided between the upper groove and the lower groove, and the groove is connected to an oil passage of the valve body. The lateral hole has an opening at one end provided on a bottom surface of the groove, and is connected to the groove. And the recess is axially above the step. Is equal to the outer diameter of the large-diameter portion, the diameter axially below the step is equal to the outer diameter of the small-diameter portion, and the opening at one end of the oil passage of the valve body has an inner peripheral surface of the recess. The groove is provided axially above the step, and the groove is provided in the large-diameter portion in the axial direction at a distance from the lower end of the large-diameter portion to the distance between the step and the opening. Is mounted on the step.
One aspect of the present invention is a hydraulic sensor module in which a sensor unit for detecting oil pressure is attached to a valve body provided with an oil passage therein, and a column-shaped attachment member tightly fixed to a lower surface of the sensor unit. A concave portion provided in the valve body, into which the mounting member is fitted; and an oil passage provided in the valve body, at least one end of which extends in a radial direction of the mounting member and is connected to the concave portion; Provided, connected to the oil passage, a horizontal hole extending in the axial direction from the side surface of the mounting member, a vertical hole provided in the mounting member, extending axially upward from the horizontal hole, and reaching the lower surface of the sensor unit, An upper groove and a lower groove provided on the upper and lower sides in the axial direction with the lateral hole interposed therebetween, the upper groove being the entire outer peripheral surface of the mounting member or the entire inner peripheral surface of the concave portion; Part An annular seal member disposed in the lower groove, and a lower hole provided inside the mounting member and extending downward in the axial direction from the lateral hole, wherein the diameter of the vertical hole is the diameter of the lower hole. It is characterized by being larger.

本発明においては、シール部材で凹部の密閉性を確保した上で、各シール部材の間に横穴が配置されているので、横穴内面には、パスカルの原理により一様な圧力が加わる。そして、この横穴は、取付部材の側面から軸方向に向けて延びるので、横穴内面の軸方向上側に加わる圧力と、その下側に加わる圧力とが相殺され、取付部材に加わる荷重を相殺することができる。従って、センサ部をバルブボディに取り付けるための取付構造が大型化、重量化することなく、小型化および軽量化した油圧センサモジュールを得ることができる。 In the present invention, the horizontal holes are arranged between the seal members after ensuring the hermeticity of the concave portion by the seal members, so that a uniform pressure is applied to the inner surface of the horizontal holes by the principle of Pascal. Since the lateral hole extends in the axial direction from the side surface of the mounting member, the pressure applied to the upper side in the axial direction of the inner surface of the lateral hole and the pressure applied to the lower side of the horizontal hole cancel each other, and the load applied to the mounting member is offset. Can be. Accordingly, it is possible to obtain a hydraulic sensor module that is reduced in size and weight without increasing the size and weight of the mounting structure for mounting the sensor unit to the valve body.

図１は、第１実施形態に係る油圧センサモジュールの断面図である。FIG. 1 is a cross-sectional view of the hydraulic sensor module according to the first embodiment. 図２は、第１実施形態に係る油圧センサモジュールの変形例１の断面図である。FIG. 2 is a cross-sectional view of a first modification of the hydraulic sensor module according to the first embodiment. 図３は、第１実施形態に係る油圧センサモジュールの変形例２の断面図である。FIG. 3 is a cross-sectional view of Modification 2 of the hydraulic sensor module according to the first embodiment. 図４は、第２実施形態に係る油圧センサモジュールの断面図である。FIG. 4 is a cross-sectional view of a hydraulic sensor module according to the second embodiment.

［１．第１実施形態］
［１．１概略構成］
以下、本発明の第１実施形態について、図１を参照して説明する。本明細書において軸とは、取付部材の長手方向に沿った中心軸をいい、単に周方向あるいは軸方向と言った場合は、中心軸の周方向あるいは中心軸の軸方向を示す。単に径方向と言った場合は、中心軸と直交する方向を示す。軸方向の一方側を「上」と呼び、他方側を「下」と呼ぶ。なお、上下方向は、説明の便宜上定めるものであり、重力方向に一致する必要はない。 [1. First Embodiment]
[1.1 Schematic configuration]
Hereinafter, a first embodiment of the present invention will be described with reference to FIG. In this specification, the axis refers to a central axis along the longitudinal direction of the mounting member, and when simply referred to as a circumferential direction or an axial direction, indicates the circumferential direction of the central axis or the axial direction of the central axis. When simply referred to as a radial direction, it indicates a direction orthogonal to the central axis. One side in the axial direction is called "up" and the other side is called "down". Note that the vertical direction is determined for convenience of description, and does not need to coincide with the direction of gravity.

本実施形態の油圧センサモジュールは、センサ部１を備える。センサ部１は、油圧を検出する油圧センサである。なお、センサ部１は、所定の油圧を検出してオン又はオフを切り換える、ダイヤフラム等を備えた油圧スイッチなどの電子部品としても良い。センサ部１の下面には円柱状の取付部材２が密着固定されており、センサ部１は取付部材２を介してコントロールバルブ機構の一部材であるバルブボディ３に装着される。すなわち、バルブボディ３には、凹部３１が設けられており、この凹部３１に取付部材２が嵌め込まれることで、センサ部１がバルブボディ３に搭載される。なお、必須の構成ではないが、図１に示すように、センサ部１にフランジを備えた樹脂キャップ５を被せて、樹脂キャップ５をバルブボディ３にネジ６およびスペーサ７を介して固定し、樹脂キャップ５を介してセンサ部１を固定しても良い。 The hydraulic sensor module according to the present embodiment includes a sensor unit 1. The sensor unit 1 is a hydraulic pressure sensor that detects a hydraulic pressure. The sensor unit 1 may be an electronic component such as a hydraulic switch provided with a diaphragm or the like, which switches on or off by detecting a predetermined oil pressure. A column-shaped mounting member 2 is tightly fixed to the lower surface of the sensor unit 1, and the sensor unit 1 is mounted via the mounting member 2 to a valve body 3 which is a member of a control valve mechanism. That is, the concave portion 31 is provided in the valve body 3, and the sensor portion 1 is mounted on the valve body 3 by fitting the mounting member 2 into the concave portion 31. Although not an essential configuration, as shown in FIG. 1, a resin cap 5 having a flange is put on the sensor unit 1, and the resin cap 5 is fixed to the valve body 3 via a screw 6 and a spacer 7. The sensor unit 1 may be fixed via the resin cap 5.

バルブボディ３には、少なくとも端部が取付部材２の径方向に延び、凹部３１に繋がる油路３２が設けられている。本実施形態では、油路３２は、取付部材２の軸上から外れた位置において取付部材２の軸方向に延び、かつ、その端部は、取付部材２の径方向中心軸側に向かって延びている。また、取付部材２には、油路３２とセンサ部１の下面とを繋ぐ穴部２０が設けられている。このため、バルブボディ３の油路３２から供給された油が穴部２０を介してセンサ部１下面に達し、センサ部１によって油圧を検出することができる。 The valve body 3 is provided with an oil passage 32 that extends at least in the radial direction of the mounting member 2 and that is connected to the recess 31. In the present embodiment, the oil passage 32 extends in the axial direction of the mounting member 2 at a position off the axis of the mounting member 2, and its end extends toward the radial center axis side of the mounting member 2. ing. In addition, the mounting member 2 is provided with a hole 20 that connects the oil passage 32 and the lower surface of the sensor unit 1. Therefore, the oil supplied from the oil passage 32 of the valve body 3 reaches the lower surface of the sensor unit 1 through the hole 20, and the oil pressure can be detected by the sensor unit 1.

［１．２詳細構成］
本実施形態の油圧センサモジュールの各構成について、詳細に説明する。円柱状の取付部材２は、例えばアルミニウム、ステンレスなどの金属、又は高度の高い樹脂で構成された部材であり、小径部２１、大径部２２、拡径部２３を有している。各部２１〜２３は、この順で軸方向下側から上側に配置され、各部２１〜２３の径がそれぞれ異なっている。小径部２１は、各部２１〜２３において最も外径が小さい部分であり、大径部２２は、小径部２１の軸方向上側に設けられ、小径部２１の径よりも径が大きい。拡径部２３は、大径部２２の軸方向上側に設けられ、大径部２２および凹部３１の径より径が大きい。このため、拡径部２３の下端は凹部３１の上縁と接触している。 [1.2 Detailed configuration]
Each configuration of the hydraulic sensor module of the present embodiment will be described in detail. The cylindrical mounting member 2 is a member made of, for example, a metal such as aluminum or stainless steel, or a high-grade resin, and has a small-diameter portion 21, a large-diameter portion 22, and a large-diameter portion 23. The parts 21 to 23 are arranged in this order from the lower side to the upper side in the axial direction, and the diameters of the parts 21 to 23 are different from each other. The small diameter portion 21 is a portion having the smallest outer diameter in each of the portions 21 to 23, and the large diameter portion 22 is provided above the small diameter portion 21 in the axial direction, and has a larger diameter than the diameter of the small diameter portion 21. The large-diameter portion 23 is provided above the large-diameter portion 22 in the axial direction, and has a larger diameter than the large-diameter portion 22 and the concave portion 31. Therefore, the lower end of the enlarged diameter portion 23 is in contact with the upper edge of the concave portion 31.

取付部材２には、上記の通り、油路３２とセンサ部１の下面とを繋ぐ穴部２０が設けられている。穴部２０は、横穴２４と縦穴２５とを有する。横穴２４は、取付部材２内部に設けられ、油路３２と繋がり、取付部材２の側面から軸方向に向けて延びる穴である。本実施形態では、横穴２４は、取付部材２の軸を中心として径方向に放射状に複数設けられている。ここでは、横穴２４は、取付部材２の軸から径方向に４箇所設けられ、周方向に９０度ずつ等間隔に配置されている。 As described above, the attachment member 2 is provided with the hole 20 that connects the oil passage 32 and the lower surface of the sensor unit 1. The hole 20 has a horizontal hole 24 and a vertical hole 25. The lateral hole 24 is a hole provided inside the mounting member 2, connected to the oil passage 32, and extending from the side surface of the mounting member 2 in the axial direction. In the present embodiment, a plurality of lateral holes 24 are provided radially around the axis of the mounting member 2 in the radial direction. Here, the lateral holes 24 are provided at four locations in the radial direction from the axis of the mounting member 2 and are arranged at regular intervals of 90 degrees in the circumferential direction.

縦穴２５は、横穴２４と繋がり、取付部材２の軸上に軸方向に延びる穴である。縦穴２５は、センサ部１の下面に達している。縦穴２５は、取付部材２内部において、小径部２１、大径部２２、拡径部２３にわたって設けられている。縦穴２５は、横穴２４と繋がっていれば良く、横穴２４より下側に延びている必要は必ずしもないが、本実施形態では、横穴２４から軸方向下側に延びる下側穴２５ａが設けられている。但し、下側穴２５ａが取付部材２の下端まで延びて貫通することはない。取付部材２が樹脂で構成される場合には、下側穴２５ａを設けると良い。取付部材２を例えば射出成型などにより樹脂で作製する場合の、成形性の安定化と軽量化を図るためである。取付部材２が金属で構成される場合、下側穴２５ａを設けることで軽量化を図ることができる。大径部２２における縦穴２５の径は、下側穴２５ａの径より大きく、拡径部２３における縦穴２５は、センサ部１側でセンサ部１に向かって漏斗状に拡がっている。 The vertical hole 25 is a hole that is connected to the horizontal hole 24 and extends on the axis of the mounting member 2 in the axial direction. The vertical hole 25 reaches the lower surface of the sensor unit 1. The vertical hole 25 is provided over the small diameter portion 21, the large diameter portion 22, and the large diameter portion 23 inside the mounting member 2. The vertical hole 25 only needs to be connected to the horizontal hole 24 and does not necessarily need to extend below the horizontal hole 24. In the present embodiment, a lower hole 25a extending axially downward from the horizontal hole 24 is provided. I have. However, the lower hole 25a does not extend to the lower end of the mounting member 2 and penetrate therethrough. When the mounting member 2 is made of resin, it is preferable to provide the lower hole 25a. This is for stabilizing the moldability and reducing the weight when the attachment member 2 is made of resin by, for example, injection molding. When the mounting member 2 is made of metal, the weight can be reduced by providing the lower hole 25a. The diameter of the vertical hole 25 in the large-diameter portion 22 is larger than the diameter of the lower hole 25a, and the vertical hole 25 in the enlarged-diameter portion 23 expands in a funnel shape toward the sensor unit 1 on the sensor unit 1 side.

小径部２１の外周面全周には、横穴２４より軸方向下側に下側溝部２１ａが設けられ、大径部２２の外周面全周には、横穴２４より軸方向上側に上側溝部２２ａが設けられている。各溝部２１ａ、２２ａには、環状のシール部材４１、４２が配置されている。シール部材４１、４２は、例えば弾性を有するゴム製のＯリングである。以下では、下側溝部２１ａに配置されたシール部材４１を「下側シール部材４１」と称し、上側溝部２２ａに配置されたシール部材４２を「上側シール部材４２」と称する場合がある。 A lower groove portion 21a is provided on the entire outer peripheral surface of the small diameter portion 21 below the horizontal hole 24 in the axial direction, and an upper groove portion 22a is provided on the entire outer peripheral surface of the large diameter portion 22 in the upper axial direction from the horizontal hole 24. Is provided. Annular seal members 41, 42 are arranged in the respective grooves 21a, 22a. The sealing members 41 and 42 are, for example, rubber O-rings having elasticity. Hereinafter, the seal member 41 disposed in the lower groove 21a may be referred to as “lower seal member 41”, and the seal member 42 disposed in the upper groove 22a may be referred to as “upper seal member 42”.

下側シール部材４１と上側シール部材４２とは径が異なっており、上側シール部材４２の方が下側シール部材４１よりも径が大きい。換言すれば、上側シール部材４２により囲まれた部分の、軸方向に直交する平面への投影面積は、下側シール部材４１により囲まれた部分の、軸方向に直交する平面への投影面積より大きい。 The lower seal member 41 and the upper seal member 42 have different diameters, and the upper seal member 42 has a larger diameter than the lower seal member 41. In other words, the projected area of the portion surrounded by the upper seal member 42 on the plane orthogonal to the axial direction is larger than the projected area of the portion surrounded by the lower seal member 41 on the plane orthogonal to the axial direction. large.

凹部３１は、バルブボディ３において取付部材２が嵌め込まれる箇所である。このため、凹部３１の形状は、取付部材２の形状に倣った形状を有している。凹部３１の底面、すなわち、軸方向と直交する下面には凹部３１とバルブボディ３の外部と繋ぐ穴３４が設けられている。取付部材２が凹部３１に嵌め込まれた際の空気をバルブボディ３外部に逃がすことで凹部３１下側における空気圧を下げ、取付部材２の挿入性を高めるためである。凹部３１の径は、軸方向上側が大きく、軸方向下側が小さい。すなわち、凹部３１の内周面には、段差３１ａが設けられている。段差３１ａよりも凹部３１の軸方向下側の内径は、小径部２１の外径と等しい。段差３１ａよりも凹部３１の軸方向上側の内径は、大径部２２の外径と等しく、下側シール部材４１の外径より大きい。 The concave portion 31 is a place where the mounting member 2 is fitted in the valve body 3. For this reason, the shape of the concave portion 31 has a shape following the shape of the mounting member 2. On the bottom surface of the concave portion 31, that is, on the lower surface orthogonal to the axial direction, a hole 34 that connects the concave portion 31 to the outside of the valve body 3 is provided. This is because, when the mounting member 2 is fitted into the concave portion 31, the air is released to the outside of the valve body 3, thereby lowering the air pressure below the concave portion 31 and improving the insertability of the mounting member 2. The diameter of the concave portion 31 is large at the upper side in the axial direction and small at the lower side in the axial direction. That is, a step 31 a is provided on the inner peripheral surface of the recess 31. The inner diameter of the concave portion 31 below the step 31a in the axial direction is equal to the outer diameter of the small diameter portion 21. The inner diameter of the concave portion 31 above the step 31 a in the axial direction is equal to the outer diameter of the large diameter portion 22 and larger than the outer diameter of the lower seal member 41.

各溝部２１ａ、２２ａにシール部材４１、４２が配置された状態で、取付部材２が凹部３１に挿入されると、下側シール部材４１は段差３１より下側の凹部３１の内周面に押圧され、上側シール部材４２は、段差より上側の凹部３１の内周面に押圧され、穴部２０および油路３２が密閉される。 When the mounting member 2 is inserted into the concave portion 31 in a state where the seal members 41 and 42 are disposed in the respective groove portions 21a and 22a, the lower seal member 41 presses against the inner peripheral surface of the concave portion 31 below the step 31. Then, the upper seal member 42 is pressed against the inner peripheral surface of the recess 31 above the step, and the hole 20 and the oil passage 32 are sealed.

本実施形態では、油路３２は、バルブボディ３内部において取付部材２の軸上から外れて軸方向に延び、その端部が屈折しており、取付部材２の径方向中心軸側に延びている。凹部３１の内周面には、周方向に沿って内周溝３１ｂが設けられている。すなわち、内周溝３１ｂは、周方向の少なくとも一部においてバルブボディ３の油路３２と接続されており、横穴２４と油路３２とを繋いでいる。具体的には、凹部３１の内周面には、油路３２の一端となる開口が設けられ、当該開口が内周溝３１ｂと接続されている。このため、油路３１の油は当該開口、内周溝３１ｂを介して横穴２４、縦穴２５に供給され、センサ部１の下面に達する。 In the present embodiment, the oil passage 32 extends axially off the axis of the mounting member 2 inside the valve body 3, the end thereof is bent, and extends toward the radial center axis side of the mounting member 2. I have. An inner circumferential groove 31b is provided on the inner circumferential surface of the concave portion 31 along the circumferential direction. That is, the inner peripheral groove 31b is connected to the oil passage 32 of the valve body 3 at least at a part in the circumferential direction, and connects the lateral hole 24 and the oil passage 32. Specifically, an opening serving as one end of the oil passage 32 is provided on the inner peripheral surface of the concave portion 31, and the opening is connected to the inner peripheral groove 31b. Therefore, the oil in the oil passage 31 is supplied to the horizontal hole 24 and the vertical hole 25 via the opening and the inner peripheral groove 31b, and reaches the lower surface of the sensor unit 1.

図１に示すように、凹部３１に取付部材２が挿入された状態では、軸方向において、拡径部２３の下端から横穴までの距離と、バルブボディ３上端から油路３２の開口までの距離とは等しくされており、拡径部２３の下端が凹部３１の上端に載っている。 As shown in FIG. 1, when the mounting member 2 is inserted into the concave portion 31, the distance from the lower end of the enlarged diameter portion 23 to the lateral hole and the distance from the upper end of the valve body 3 to the opening of the oil passage 32 in the axial direction. And the lower end of the enlarged diameter portion 23 rests on the upper end of the concave portion 31.

［１．３作用］
上記のような構成を有する第１実施形態の作用について説明する。まず、油路３２の油の供給について説明すると、油路３２の油は、上記開口を介して凹部３１の内周面全周に設けられた内周溝３１ｂに供給される。そして、周方向に９０度ずつ等間隔に配置された横穴２４を通って取付部材２の側面から軸に向けて油が流れ、縦穴２５に供給される。油が軸中心において分流する。すなわち、一方が下側穴２５ａに供給され、他方が軸方向上側に供給される。そして軸方向上側に流れた油はセンサ部１の下面に達し、センサ部１により油圧が検出される。 [1.3 Action]
The operation of the first embodiment having the above configuration will be described. First, the supply of the oil in the oil passage 32 will be described. The oil in the oil passage 32 is supplied to the inner peripheral groove 31b provided on the entire inner peripheral surface of the concave portion 31 through the opening. Then, the oil flows from the side surface of the mounting member 2 toward the shaft through the horizontal holes 24 arranged at regular intervals of 90 degrees in the circumferential direction, and is supplied to the vertical holes 25. Oil splits at the center of the shaft. That is, one is supplied to the lower hole 25a, and the other is supplied to the upper side in the axial direction. Then, the oil flowing upward in the axial direction reaches the lower surface of the sensor unit 1, and the oil pressure is detected by the sensor unit 1.

このように、バルブボディ３の油路３２の油は穴部２０を介してセンサ部１に供給される。ここで、各シール部材４１、４２により、凹部３１の密閉性が確保されている。すなわち、下側シール部材４１と上側シール部材４２との間に横穴２４が配置されているので、横穴２４内面には、パルカルの原理により一様な圧力が加わる。そのため、横穴２４内の各面に加わる荷重はその受圧面積に依存する。特に、横穴２４内の軸方向上側の面と軸方向下側の面における受圧面積は、各シール部材４１、４２の囲う、軸方向に直交する平面への投影面積に依存する。 As described above, the oil in the oil passage 32 of the valve body 3 is supplied to the sensor unit 1 through the hole 20. Here, the sealability of the recess 31 is ensured by the seal members 41 and 42. That is, since the horizontal hole 24 is disposed between the lower seal member 41 and the upper seal member 42, a uniform pressure is applied to the inner surface of the horizontal hole 24 according to the principle of Palcal. Therefore, the load applied to each surface in the lateral hole 24 depends on the pressure receiving area. In particular, the pressure receiving areas on the upper surface in the axial direction and the lower surface in the axial direction in the lateral hole 24 depend on the projected area of each seal member 41, 42 on a plane orthogonal to the axial direction.

本実施形態では、横穴２４は取付部材２の側面から軸に向けて延びるので、横穴２４の内面の軸方向上側に加わる圧力と、横穴２４の内面の軸方向下側に加わる圧力とが相殺され、取付部材２に加わる荷重が相殺される。すなわち、取付部材２に加わる軸方向の荷重は、上側シール部材４２により囲まれた部分の、軸方向に直交する平面への投影面積と、下側シール部材４１により囲まれた部分の、軸方向に直交する平面への投影面積との差分に応じた分だけで済む。このため、過大な取付構造を不要とすることができる。 In the present embodiment, since the lateral hole 24 extends toward the axis from the side surface of the mounting member 2, the pressure applied to the inner surface of the lateral hole 24 in the axial direction and the pressure applied to the inner surface of the lateral hole 24 in the axial direction are offset. And the load applied to the mounting member 2 is offset. That is, the axial load applied to the mounting member 2 depends on the projected area of the portion surrounded by the upper seal member 42 on a plane orthogonal to the axial direction and the axial area of the portion surrounded by the lower seal member 41. Only the amount corresponding to the difference from the projected area on a plane orthogonal to For this reason, an excessive mounting structure can be eliminated.

［１．４効果］
（１）本実施形態の油圧センサモジュールは、内部に油路３２が設けられたバルブボディ３に油圧を検出するセンサ部１が取り付けられた油圧センサモジュールであって、センサ部１の下面に密着固定された柱状の取付部材２と、バルブボディ３に設けられ、取付部材２が嵌め込まれる凹部３１と、バルブボディ３に設けられ、少なくとも端部が取付部材２の径方向に延び、凹部３１に繋がる油路３２と、取付部材２に設けられ、油路３２と繋がり、取付部材２の側面から軸方向に向けて延びる横穴２４と、取付部材２に設けられ、横穴２４から軸方向上方に延び、センサ部１の下面に達する縦穴２５と、取付部材２の外周面全周であって、横穴２４を挟んで、軸方向の上側および下側に設けられた上側溝部２２ａおよび下側溝部２１ａと、上側溝部２２ａおよび下側溝部２１ａに配置された環状のシール部材４１、４２と、を備えるようにした。 [1.4 Effect]
(1) The hydraulic sensor module of the present embodiment is a hydraulic sensor module in which a sensor unit 1 for detecting oil pressure is attached to a valve body 3 having an oil passage 32 provided therein, and is closely attached to the lower surface of the sensor unit 1. A fixed columnar mounting member 2, a concave portion 31 provided in the valve body 3, into which the mounting member 2 is fitted, and a concave portion provided in the valve body 3, at least an end portion of which extends in the radial direction of the mounting member 2, and An oil passage 32 connected to the mounting member 2, a horizontal hole 24 connected to the oil passage 32 and extending in the axial direction from a side surface of the mounting member 2, and a horizontal hole 24 provided in the mounting member 2 and extending axially upward from the horizontal hole 24. A vertical hole 25 reaching the lower surface of the sensor portion 1 and an upper groove portion 22a and a lower groove portion 21a provided on the upper and lower sides of the mounting member 2 in the axial direction with the horizontal hole 24 interposed therebetween. When, An annular seal member 41 disposed in the groove portion 22a and the lower groove portion 21a, and so comprises a.

これにより、シール部材４１、４２で凹部３１の密閉性を確保した上で、各シール部材４１、４２の間に横穴２４が配置されているので、横穴２４内面には、パスカルの原理により一様な圧力が加わる。そして、この横穴２４は、取付部材２の側面から軸方向に向けて延びるので、横穴２４内面の軸方向上側に加わる圧力と、その下側に加わる圧力とが相殺され、取付部材２に加わる荷重を相殺することができる。従って、センサ部１をバルブボディ３に取り付けるための取付構造が大型化、重量化することなく、小型化および軽量化を図った油圧センサモジュールを得ることができる。 With this, the sealing member 41, 42 secures the sealing of the concave portion 31, and the horizontal hole 24 is disposed between the sealing members 41, 42. Therefore, the inner surface of the horizontal hole 24 is uniformly formed by the principle of Pascal. Pressure is applied. Since the horizontal hole 24 extends in the axial direction from the side surface of the mounting member 2, the pressure applied to the upper side in the axial direction of the inner surface of the horizontal hole 24 and the pressure applied to the lower side thereof are offset, and the load applied to the mounting member 2 is cancelled. Can be offset. Therefore, it is possible to obtain a hydraulic sensor module that is reduced in size and weight without increasing the size and weight of the mounting structure for mounting the sensor unit 1 to the valve body 3.

（２）上側シール部材４２により囲まれた部分の、軸方向に直交する平面への投影面積を、下側シール部材４１により囲まれた部分の、軸方向に直交する平面への投影面積より大きくした。これにより、取付部材２に加わる荷重は、上側シール部材４２と下側シール部材４１の投影面積差分で済むので、過大な取付構造を不要とし、油圧センサモジュールの小型化および軽量化を図ることができる。 (2) The projected area of the portion surrounded by the upper seal member 42 on a plane orthogonal to the axial direction is larger than the projected area of the portion surrounded by the lower seal member 41 on a plane orthogonal to the axial direction. did. As a result, the load applied to the mounting member 2 can be the projection area difference between the upper seal member 42 and the lower seal member 41, so that an excessive mounting structure is not required, and the hydraulic sensor module can be reduced in size and weight. it can.

（３）上側シール部材４２の径を、下側シール部材４１の径より大きくし、取付部材２は、下側溝部２１ａが設けられた小径部２１と、上側溝部２２ａが設けられた大径部２２と、を有し、凹部３１の内周面には、段差３１ａが設けられ、段差３１ａよりも凹部３１の軸方向上側の内径を、下側シール部材４１の外径より大きくした。 (3) The diameter of the upper seal member 42 is made larger than the diameter of the lower seal member 41, and the mounting member 2 has a small diameter portion 21 provided with the lower groove portion 21a and a large diameter portion provided with the upper groove portion 22a. A step 31 a is provided on the inner peripheral surface of the recess 31, and the inner diameter of the recess 31 in the axial direction above the step 31 a is larger than the outer diameter of the lower seal member 41.

これにより、凹部３１の上部の径が下側シール部材４１の径より大きくされているので、取付部材２を凹部３１に上側から嵌め込む際に、下側シール部材４１が凹部３１の上縁および凹部３１の内周面上部と擦れず、下側シール部材４１がすり切れるなどの損傷を受けることを防止することができる。また、取付部材２を凹部３１へ嵌め込む際、入り口となる凹部３１の上部が取付部材２の小径部２１の外径より大きいので挿入しやすく、取付部材２の凹部３１への作業性を向上させることができる。 As a result, the diameter of the upper portion of the concave portion 31 is made larger than the diameter of the lower seal member 41. Therefore, when the mounting member 2 is fitted into the concave portion 31 from above, the lower seal member 41 It is possible to prevent the lower seal member 41 from being damaged, such as being worn, without rubbing against the upper portion of the inner peripheral surface of the concave portion 31. Also, when the mounting member 2 is fitted into the concave portion 31, the upper portion of the concave portion 31 serving as an entrance is larger than the outer diameter of the small diameter portion 21 of the mounting member 2 so that it is easy to insert, and the workability of the mounting member 2 into the concave portion 31 is improved. Can be done.

（４）凹部３１の内周面には、周方向に沿った内周溝３１ｂが設けられ、内周溝３１ｂは、周方向の少なくとも一部においてバルブボディ３の油路３２と接続され、横穴２４とバルブボディ３の油路３２とを繋ぐようにした。これにより、内周溝３１ｂを介してバルブボディ３の油路３２と横穴２４とを繋ぐことができるので、横穴２４の向きを気にして取り付ける必要性がなくなる。このため、取付部材２を凹部３１に嵌め込む際の作業性を向上させることができる。例えば、本実施形態では、横穴２４は、取付部材２の軸を中心として９０度ずつ等間隔に４箇所設けられているが、特に、凹部３１の内周面全周に内周溝３１ｂを設けることで、取付部材２の外周面に形成される横穴２４の一端の開口が軸周りのどの向きにあっても内周溝３１ｂと接続される。従って、作業性を向上させることができる。 (4) An inner circumferential groove 31b is provided on the inner circumferential surface of the concave portion 31 along the circumferential direction. The inner circumferential groove 31b is connected to the oil passage 32 of the valve body 3 at least in a part of the circumferential direction, and 24 and the oil passage 32 of the valve body 3. Thus, the oil passage 32 of the valve body 3 and the side hole 24 can be connected via the inner peripheral groove 31b, so that there is no need to attach the side hole 24 with care. For this reason, the workability when fitting the mounting member 2 into the concave portion 31 can be improved. For example, in the present embodiment, the lateral holes 24 are provided at four locations at regular intervals of 90 degrees about the axis of the mounting member 2. In particular, the inner peripheral groove 31 b is provided on the entire inner peripheral surface of the concave portion 31. Thus, the opening at one end of the lateral hole 24 formed on the outer peripheral surface of the mounting member 2 is connected to the inner peripheral groove 31b regardless of the direction around the axis. Therefore, workability can be improved.

（５）取付部材２は、大径部２２の軸方向上側に設けられ、大径部２２および凹部３１の径より径が大きい拡径部２３を有し、凹部３１の内周面には、バルブボディ３の油路３２の一端となる開口が設けられ、軸方向において、拡径部２３の下端から横穴２４までの距離と、バルブボディ３上端から油路３２の開口までの距離とが等しくされ、拡径部２３の下端が凹部３１の上端に載るようにした。これにより、取付部材２の凹部３１への嵌め込みの際に拡径部２３が凹部３１上端に載るとともに、自動的に横穴２４と油路３２の開口と高さが一致するので、高さを一致させる等の調整をする必要がなく、作業性を向上させることができる。 (5) The mounting member 2 is provided above the large-diameter portion 22 in the axial direction, has a large-diameter portion 22 and an enlarged-diameter portion 23 having a diameter larger than the diameter of the concave portion 31. An opening that is one end of the oil passage 32 of the valve body 3 is provided, and the distance from the lower end of the enlarged diameter portion 23 to the lateral hole 24 is equal to the distance from the upper end of the valve body 3 to the opening of the oil passage 32 in the axial direction. Then, the lower end of the enlarged diameter portion 23 is placed on the upper end of the concave portion 31. As a result, when the mounting member 2 is fitted into the concave portion 31, the enlarged diameter portion 23 is placed on the upper end of the concave portion 31, and the horizontal hole 24 and the opening of the oil passage 32 automatically coincide with each other. There is no need to make any adjustments such as making it work, and the workability can be improved.

（６）取付部材２内部に設けられ、横穴２４から軸方向下側に延びる下側穴２５ａを備え、大径部２２における縦穴２５の径を、下側穴２５ａの径より大きくした。これにより、下側溝部２１ａおよび上側溝部２２ａの寸法精度を向上させ、各シール部材４１、４２による密閉性を高めることができる。例えば、取付部材２が樹脂からなる場合、大径部２２、小径部２１のように肉厚が異なると、樹脂が冷却されることで収縮し形状にバラツキが生じ得るが、小径部２１に下側穴２５ａを設けるとともに、大径部２２に下側穴２５ａより大きい縦穴２５を設けることで、取付部材２の形状のバラツキを防止し、各溝部２１ａ、２２ｂの寸法精度を向上させることができる。 (6) A lower hole 25a is provided inside the mounting member 2 and extends axially downward from the horizontal hole 24. The diameter of the vertical hole 25 in the large diameter portion 22 is larger than the diameter of the lower hole 25a. As a result, the dimensional accuracy of the lower groove 21a and the upper groove 22a can be improved, and the sealing performance of the seal members 41 and 42 can be improved. For example, when the mounting member 2 is made of resin, if the wall thickness is different, such as the large-diameter portion 22 and the small-diameter portion 21, the resin may shrink due to cooling, causing variations in the shape. By providing the side hole 25a and the vertical hole 25 larger than the lower hole 25a in the large-diameter portion 22, variation in the shape of the mounting member 2 can be prevented, and the dimensional accuracy of each groove 21a, 22b can be improved. .

（７）横穴２４は、取付部材２の中心軸から径方向に２箇所以上設けるようにした。これにより、取付部材２を凹部３１に挿入した際の空気抜けを良くすることができる。 (7) Two or more lateral holes 24 are provided in the radial direction from the center axis of the mounting member 2. Thereby, the air bleeding when the mounting member 2 is inserted into the concave portion 31 can be improved.

（８）縦穴２５は、センサ部１側でセンサ部１に向かって拡がる漏斗形状を有するようにした。これにより、センサ部１の受圧面積が大きくなるので、センサ部１によって縦穴２５から加わる油圧の微妙な変化を検出することができる。 (8) The vertical hole 25 has a funnel shape expanding toward the sensor unit 1 on the sensor unit 1 side. Accordingly, the pressure receiving area of the sensor unit 1 is increased, so that the sensor unit 1 can detect a subtle change in the hydraulic pressure applied from the vertical hole 25.

［１．５第１実施形態の変形例］
第１実施形態の変形例１、２について、図２、図３を用いて説明する。各変形例は、第１実施形態と基本構成は同じである。よって、第１実施形態と異なる点のみを説明し、第１実施形態と同じ部分については同じ符号を付して詳細な説明は省略する。 [1.5 Modification of First Embodiment]
Modifications 1 and 2 of the first embodiment will be described with reference to FIGS. Each modified example has the same basic configuration as the first embodiment. Therefore, only different points from the first embodiment will be described, and the same parts as those in the first embodiment will be denoted by the same reference numerals and detailed description thereof will be omitted.

（変形例１）
図２に示すように、横穴２４、縦穴２５の構成が異なっている。すなわち、横穴２４は、取付部材２の軸に対して斜めに延びている。ここでは、取付部材２の軸に対して斜め上側に向かって延びているが、取付部材２の軸に対して斜め下側に向かって延びていても良い。図２では横穴２４は一箇所のみ設けているが、空気抜けを良くするため複数箇所設けても良い。また、縦穴２５は、横穴２４と繋がっている箇所より下側に下側穴２５ａが設けられていない。 (Modification 1)
As shown in FIG. 2, the configuration of the horizontal hole 24 and the vertical hole 25 is different. That is, the horizontal hole 24 extends obliquely with respect to the axis of the mounting member 2. Here, it extends obliquely upward with respect to the axis of the mounting member 2, but may extend obliquely downward with respect to the axis of the mounting member 2. Although only one lateral hole 24 is provided in FIG. 2, a plurality of lateral holes 24 may be provided to improve air leakage. Further, the vertical hole 25 is not provided with a lower hole 25 a below a portion connected to the horizontal hole 24.

図２に示すように、取付部材２は、拡径部２３より下側に、外径が軸方向において一定である径部２６を有している。径部２６の外周面全周には、径部２６の軸方向下側に下側溝部２６ａが設けられ、径部２６の軸方向上側に上側溝部２６ｂが設けられている。これら径部２６ａ、２６ｂは、横穴２４を挟んで配置されている。下側溝部２６ａには下側シール部材４１が配置され、上側溝部２６ｂには上側シール部材４２が配置されている。すなわち、本変形例の取付部材２は、第１実施形態における小径部２１と大径部２２の径を等しくし、各溝部２１ａ、２２ａの外径も等しくした構成を有する。このため、本変形例では、下側シール部材４１と上側シール部材４２との外径が等しい。 As shown in FIG. 2, the mounting member 2 has a diameter portion 26 whose outer diameter is constant in the axial direction below the enlarged diameter portion 23. A lower groove 26a is provided on the entire outer peripheral surface of the radial portion 26 below the radial portion 26 in the axial direction, and an upper groove 26b is provided on the upper side of the radial portion 26 in the axial direction. These radial portions 26a and 26b are arranged with the lateral hole 24 interposed therebetween. A lower seal member 41 is disposed in the lower groove 26a, and an upper seal member 42 is disposed in the upper groove 26b. That is, the attachment member 2 of this modification has a configuration in which the small diameter portion 21 and the large diameter portion 22 in the first embodiment have the same diameter, and the outer diameters of the grooves 21a and 22a are also equal. For this reason, in this modification, the outer diameters of the lower seal member 41 and the upper seal member 42 are equal.

そのため、上側シール部材４２により囲まれた部分の、軸方向に直交する平面への投影面積と、下側シール部材４１により囲まれた部分の、軸方向に直交する平面への投影面積とが等しい。これにより、取付部材２に加わる荷重が０になり、センサ部１をバルブボディ３に押さえつけるなどの構造自体が不要となるので、油圧センサモジュールの小型化および軽量化を図ることができる。 Therefore, the projected area on the plane orthogonal to the axial direction of the part surrounded by the upper seal member 42 is equal to the projected area on the plane orthogonal to the axial direction of the part surrounded by the lower seal member 41. . As a result, the load applied to the mounting member 2 becomes zero, and the structure itself such as pressing the sensor unit 1 against the valve body 3 becomes unnecessary, so that the hydraulic sensor module can be reduced in size and weight.

すなわち、横穴２４内部の油圧は、パスカルの原理により、横穴２４内面に一様に加わる。本変形例では各シール部材４１、４２の径を等しくすることにより、横穴２４内の上側の面を介して上向きに加わる力と、横穴２４内の下側の面を介して下向きに加わる力とが相殺され、取付部材２に加わる荷重は０となる。従って、特別な取付構造を不要とし、油圧センサモジュールの小型化および軽量化を図ることができる。 That is, the oil pressure inside the lateral hole 24 is uniformly applied to the inner surface of the lateral hole 24 according to the principle of Pascal. In this modification, by making the diameters of the seal members 41 and 42 equal, the force applied upward through the upper surface in the horizontal hole 24 and the force applied downward through the lower surface in the horizontal hole 24 are reduced. Are offset, and the load applied to the mounting member 2 becomes zero. Therefore, a special mounting structure is not required, and the size and weight of the hydraulic sensor module can be reduced.

（変形例２）
図３に示すように、変形例２のバルブボディ３の油路３３は、取付部材２の軸に対して直角方向に延びており、その一端が横穴２４と繋がっている。すなわち、第１実施形態の油路３２は、取付部材２の軸方向に延び、途中で取付部材２の径方向に屈折して径方向軸側に延びていたが、図３に示すように、少なくとも凹部３１周辺において取付部材２の軸に向かって延びていれば良い。このように、横穴２４に接続される油路３２の端部が、取付部材２の軸上に延びるのではなく、当該軸に向かって延びていれば、上記第１実施形態と同様の作用効果を奏することができる。 (Modification 2)
As shown in FIG. 3, the oil passage 33 of the valve body 3 of the second modification extends in a direction perpendicular to the axis of the mounting member 2, and one end thereof is connected to the lateral hole 24. That is, the oil passage 32 of the first embodiment extends in the axial direction of the mounting member 2, refracts in the radial direction of the mounting member 2 on the way, and extends to the radial axis side, but as shown in FIG. What is necessary is that it extends toward the axis of the mounting member 2 at least around the concave portion 31. As described above, if the end of the oil passage 32 connected to the lateral hole 24 does not extend on the axis of the mounting member 2 but extends toward the axis, the same operation and effect as in the first embodiment described above. Can be played.

［２．第２実施形態］
［２．１構成］
第２実施形態について、図４を用いて説明する。第２実施形態は、第１実施形態と基本構成は同じである。よって、第１実施形態と異なる点のみを説明し、第１実施形態と同じ部分については同じ符号を付して詳細な説明は省略する。 [2. Second Embodiment]
[2.1 Configuration]
A second embodiment will be described with reference to FIG. The second embodiment has the same basic configuration as the first embodiment. Therefore, only different points from the first embodiment will be described, and the same parts as those in the first embodiment will be denoted by the same reference numerals and detailed description thereof will be omitted.

図４に示すように、第２実施形態では、取付部材２の外周面全周において、上側溝部２２ａと下側溝部２１ａとの間に溝部２７が設けられている。溝部２７は、バルブボディ３の油路３２と繋がっている。また、溝部２７は横穴２４とも繋がっている。すなわち、横穴２４の一端の開口が溝部２７の底面に設けられている。溝部２７の底面とは、溝部２７の奥の部分の面であり、取付部材２の軸側の面をいう。 As shown in FIG. 4, in the second embodiment, a groove 27 is provided between the upper groove 22a and the lower groove 21a on the entire outer peripheral surface of the mounting member 2. The groove 27 is connected to the oil passage 32 of the valve body 3. The groove 27 is also connected to the lateral hole 24. That is, an opening at one end of the horizontal hole 24 is provided on the bottom surface of the groove 27. The bottom surface of the groove 27 is a surface at the back of the groove 27 and refers to a surface of the mounting member 2 on the shaft side.

バルブボディ３の油路３２は、少なくとも端部が軸方向に対して直角に延びており、油路３２の一端である開口は、凹部３１の内周面の段差３１ａより軸方向上側に設けられている。溝部２７は、大径部２２に、軸方向において、大径部２２の下端から段差３１ａと油路３２の開口との距離だけ離れて設けられている。このため、取付部材２を凹部３１に嵌め込んだ状態では、大径部２２の下端が段差３１ａに載った状態となる。 At least one end of the oil passage 32 of the valve body 3 extends at right angles to the axial direction, and an opening, which is one end of the oil passage 32, is provided axially above a step 31 a of the inner peripheral surface of the concave portion 31. ing. The groove 27 is provided in the large-diameter portion 22 in the axial direction at a distance from the lower end of the large-diameter portion 22 to the distance between the step 31 a and the opening of the oil passage 32. Therefore, when the mounting member 2 is fitted into the concave portion 31, the lower end of the large-diameter portion 22 is placed on the step 31a.

［２．２作用・効果］
（１）本実施形態では、取付部材２の外周面において、上側溝部２２ａと下側溝部２１ａとの間に設けられ、バルブボディ３の油路３２と繋がる溝部２７を備えた。横穴２４は、その一端の開口が溝部２７の底面に設けられ、溝部２７と繋がるようにした。 [2.2 Action / Effect]
(1) In the present embodiment, the outer peripheral surface of the mounting member 2 is provided between the upper groove 22a and the lower groove 21a, and has the groove 27 connected to the oil passage 32 of the valve body 3. The lateral hole 24 has an opening at one end provided on the bottom surface of the groove 27 so as to be connected to the groove 27.

これにより、溝部２７を介してバルブボディ３の油路３２が横穴２４と繋がるので、横穴２４の一端の開口と、バルブボディ３の油路３２の開口とを位置合わせする必要がない。すなわち、バルブボディ３の油路３２から供給された油は、溝部２７に充填され、横穴２４へと供給されるので、取付部材２の軸周りの向き、すなわち横穴２４の向きを気にしてバルブボディ３に取り付ける必要性がなくなる。その結果として、作業性を向上させることができる。 Thus, the oil passage 32 of the valve body 3 is connected to the lateral hole 24 via the groove 27, so that it is not necessary to align the opening of one end of the lateral hole 24 with the opening of the oil passage 32 of the valve body 3. That is, the oil supplied from the oil passage 32 of the valve body 3 fills the groove 27 and is supplied to the lateral hole 24. There is no need to attach to the body 3. As a result, workability can be improved.

また、溝部２７は取付部材２の外周面に設けられるため、外側から加工することが可能である。すなわち、第１実施形態のように、凹部３１の内周面に内周溝３１ｂを設けてバルブボディ３の油路３２と横穴２４とを繋げる方法を採ることもできるが、バルブボディ３の内側を加工するよりも、取付部材２の外側を加工する方が、加工性が良いという利点がある。 Further, since the groove 27 is provided on the outer peripheral surface of the mounting member 2, it can be processed from the outside. That is, as in the first embodiment, a method of providing an inner peripheral groove 31b on the inner peripheral surface of the concave portion 31 to connect the oil passage 32 of the valve body 3 to the lateral hole 24 can be adopted. Machining the outside of the mounting member 2 has an advantage of better workability than machining.

（２）第１実施形態と同様に、凹部３１は、段差３１ａより軸方向上側の径が大径部２２の外径と等しく、段差３１ａより軸方向下側の径が小径部２１の外径と等しい。また、バルブボディ３の油路３２の一端である開口は、凹部３１の内周面の、段差３１ａより軸方向上側に設けられ、溝部２７は、大径部２２に、軸方向において、当該大径部２２の下端から段差３１ａと油路３２の開口との距離だけ離れて設けられ、大径部２２の下端が段差３１ａに載るようにした。 (2) As in the first embodiment, the concave portion 31 has a diameter on the upper side in the axial direction from the step 31a equal to the outer diameter of the large-diameter portion 22 and a diameter on the lower side in the axial direction from the step 31a outside the small-diameter portion 21. Is equal to The opening, which is one end of the oil passage 32 of the valve body 3, is provided on the inner peripheral surface of the concave portion 31 in the axial direction above the step 31 a, and the groove 27 is formed in the large-diameter portion 22 in the axial direction. The lower end of the large-diameter portion 22 is provided on the step 31a at a distance from the lower end of the diameter portion 22 to the distance between the step 31a and the opening of the oil passage 32.

これにより、溝部２７とバルブボディ３の油路３２の開口との、軸方向における位置合わせをすることができる。大径部２２の下端が凹部３１の段差３１ａに載るまで取付部材２を凹部３１に差し込むことで、溝部２７とバルブボディ３の油路３２の開口とを繋げることができるので、取付作業が簡易になり、作業性を向上させることができる。 Thereby, the axial position of the groove 27 and the opening of the oil passage 32 of the valve body 3 can be aligned. By inserting the mounting member 2 into the concave portion 31 until the lower end of the large diameter portion 22 is placed on the step 31a of the concave portion 31, the groove portion 27 and the opening of the oil passage 32 of the valve body 3 can be connected. And workability can be improved.

［３．他の実施形態］
本発明は、以上の実施形態に限定されるものではない。以上の実施形態は例として提示したものであって、その他の様々な形態で実施されることが可能である。発明の範囲を逸脱しない範囲で、種々の省略や置き換え、変更を行うことができる。これら実施形態やその変形は、発明の範囲、要旨、その均等の範囲に含まれる。以下、その一例を示す。 [3. Other Embodiments]
The present invention is not limited to the above embodiment. The above embodiments have been presented as examples, and can be implemented in other various forms. Various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and their modifications are included in the scope, gist, and equivalents of the invention. Hereinafter, an example is shown.

例えば、第１実施形態、その変形例１、２および第２実施形態では、下側溝部２１ａ、上側溝部２２ａを取付部材２の外周面全周に設けたが、バルブボディ３の内周面全周に設けても良い。このようにしても、取付部材２内の穴部２０の密閉性を確保することができ、上記実施形態、変形例と同様の作用効果を得ることができる。 For example, in the first embodiment, modified examples 1 and 2, and the second embodiment, the lower groove 21a and the upper groove 22a are provided on the entire outer peripheral surface of the mounting member 2, but the inner peripheral surface of the valve body 3 is provided. It may be provided all around. Also in this case, the hermeticity of the hole 20 in the mounting member 2 can be ensured, and the same operation and effect as those of the above-described embodiment and the modified example can be obtained.

１…センサ部、２…取付部材、２０…穴部、２１…小径部、２１ａ…下側溝部、２２…大径部、２２ａ…上側溝部、２３…拡径部、２４…横穴、２５…縦穴、２５ａ…下側穴、２６…径部、２６ａ…下側溝部、２６ｂ…上側溝部、２７…溝部、３…バルブボディ、３１…凹部、３１ａ…段差、３１ｂ…内周溝、３２…油路、３３…油路、３４…穴、４１…下側シール部材、４２…上側シール部材、５…樹脂キャップ、６…ネジ、７…スペーサ DESCRIPTION OF SYMBOLS 1 ... Sensor part, 2 ... Mounting member, 20 ... Hole part, 21 ... Small diameter part, 21a ... Lower groove part, 22 ... Large diameter part, 22a ... Upper groove part, 23 ... Large diameter part, 24 ... Side hole, 25 ... Vertical hole, 25a: lower hole, 26: diameter portion, 26a: lower groove portion, 26b: upper groove portion, 27: groove portion, 3: valve body, 31: concave portion, 31a: step, 31b: inner peripheral groove, 32 ... Oil passage, 33 ... oil passage, 34 ... hole, 41 ... lower seal member, 42 ... upper seal member, 5 ... resin cap, 6 ... screw, 7 ... spacer

Claims

A hydraulic sensor module in which a sensor unit for detecting oil pressure is attached to a valve body provided with an oil passage therein, and a column-shaped attachment member tightly fixed to a lower surface of the sensor unit; A concave portion in which the mounting member is fitted; provided in the valve body, at least an end portion extending in a radial direction of the mounting member, and connected to the concave portion; and an oil passage provided in the mounting member; A plurality of lateral holes radially provided around the axis of the mounting member in a radial direction, and a vertical hole provided in the mounting member, extending upward in the axial direction from the horizontal hole, and reaching the lower surface of the sensor unit; An upper groove portion and a lower groove portion provided on the entire circumference of the outer peripheral surface of the member or the entire circumference of the inner surface of the concave portion and provided on the upper side and the lower side in the axial direction with the lateral hole interposed therebetween; A hydraulic sensor module comprising: and an annular seal member disposed in the lower groove.

The projected area on the plane orthogonal to the axial direction of the part surrounded by the upper seal member is equal to the projected area on the plane orthogonal to the axial direction of the part surrounded by the lower seal member. The hydraulic sensor module according to claim 1.

A projected area of a portion surrounded by the upper seal member on a plane orthogonal to the axial direction is larger than a projected area of a portion surrounded by the lower seal member on a plane orthogonal to the axial direction. Item 2. A hydraulic sensor module according to item 1.

The diameter of the upper seal member is larger than the diameter of the lower seal member, the mounting member is a small diameter portion provided with the lower groove portion, a large diameter portion provided with the upper groove portion, The hydraulic pressure according to claim 3, wherein a step is provided on an inner peripheral surface of the recess, and an inner diameter of the recess in the axial direction above the step is larger than an outer diameter of the lower seal member. Sensor module.

An inner circumferential groove is provided on an inner circumferential surface of the concave portion along a circumferential direction. The inner circumferential groove is connected to an oil passage of the valve body in at least a part of a circumferential direction, and the side hole and the valve body The hydraulic sensor module according to any one of claims 1 to 4, wherein the hydraulic sensor module is connected to an oil passage.

On the outer peripheral surface of the mounting member, a groove is provided between the upper groove and the lower groove, and is connected to an oil passage of the valve body.The lateral hole has an opening at one end thereof at a bottom surface of the groove. The hydraulic sensor module according to claim 4, wherein the hydraulic sensor module is provided and connected to the groove.

The attachment member is provided on the axially upper side of the large diameter portion, and has an enlarged portion having a diameter larger than the diameter of the large diameter portion and the concave portion. An opening that becomes one end of an oil passage is provided. In the axial direction, a distance from a lower end of the enlarged diameter portion to the lateral hole is equal to a distance from an upper end of the valve body to an opening of the oil passage. The hydraulic sensor module according to claim 4, wherein a lower end of the portion rests on an upper end of the recess.

In the concave portion, a diameter in the axial direction above the step is equal to the outer diameter of the large diameter portion, a diameter in the axial direction below the step is equal to the outer diameter of the small diameter portion, and one end of an oil passage of the valve body. The opening is provided on the inner peripheral surface of the concave portion in the axial direction above the step. The groove portion is formed in the large-diameter portion in the axial direction from the lower end of the large-diameter portion to the step and the opening. 7. The hydraulic sensor module according to claim 6, wherein the lower end of the large-diameter portion is placed on the step.

9. The apparatus according to claim 1, further comprising a lower hole provided inside the mounting member and extending axially downward from the lateral hole, wherein a diameter of the vertical hole is larger than a diameter of the lower hole. 10. An oil pressure sensor module as described in the above.

The hydraulic sensor module according to any one of claims 1 to 9, wherein the lateral hole is provided at two or more locations in a radial direction from a central axis of the mounting member.

The hydraulic sensor module according to any one of claims 1 to 10, wherein the vertical hole has a funnel shape that expands toward the sensor unit on the sensor unit side.

A hydraulic sensor module in which a sensor unit for detecting oil pressure is attached to a valve body provided with an oil passage therein, and a column-shaped attachment member tightly fixed to a lower surface of the sensor unit; A concave portion in which the mounting member is fitted; provided in the valve body, at least an end portion extending in a radial direction of the mounting member, and connected to the concave portion; and an oil passage provided in the mounting member; A horizontal hole connected to the mounting member and extending in the axial direction from a side surface of the mounting member; a vertical hole provided in the mounting member, extending upward in the axial direction from the horizontal hole, and reaching the lower surface of the sensor unit; and a whole outer peripheral surface of the mounting member. An upper groove and a lower groove provided on the upper side and the lower side in the axial direction with the lateral hole interposed therebetween, and the upper groove and the An annular seal member disposed side groove,
The projected area of the portion surrounded by the upper seal member on a plane orthogonal to the axial direction is larger than the projected area of the portion surrounded by the lower seal member on a plane orthogonal to the axial direction. Mounting members,
The mounting member,
  A small diameter portion provided with the lower groove portion,
  A large diameter portion provided with the upper groove portion,
  Has,
  On the inner peripheral surface of the recess, a step is provided, and the inner diameter of the recess in the axial direction above the step is larger than the outer diameter of the lower seal member,
  The mounting member,
  A large-diameter portion is provided on the upper side in the axial direction of the large-diameter portion and has a larger diameter than the diameter of the large-diameter portion and the concave portion.
  An opening that is one end of an oil passage of the valve body is provided on an inner peripheral surface of the recess,
  In the axial direction, the distance from the lower end of the enlarged diameter portion to the lateral hole is equal to the distance from the upper end of the valve body to the opening of the oil passage,
  A hydraulic sensor module in which a lower end of the enlarged diameter portion rests on an upper end of the concave portion.

A hydraulic sensor module in which a sensor unit for detecting oil pressure is attached to a valve body provided with an oil passage therein, and a column-shaped attachment member tightly fixed to a lower surface of the sensor unit; A concave portion in which the mounting member is fitted; provided in the valve body, at least an end portion extending in a radial direction of the mounting member, and connected to the concave portion; and an oil passage provided in the mounting member; A horizontal hole connected to the mounting member and extending in the axial direction from a side surface of the mounting member; a vertical hole provided in the mounting member, extending upward in the axial direction from the horizontal hole, and reaching the lower surface of the sensor unit; and a whole outer peripheral surface of the mounting member. An upper groove and a lower groove provided on the upper side and the lower side in the axial direction with the lateral hole interposed therebetween, and the upper groove and the An annular seal member disposed side groove,
The projected area of the portion surrounded by the upper seal member on a plane orthogonal to the axial direction is larger than the projected area of the portion surrounded by the lower seal member on a plane orthogonal to the axial direction. Mounting members,
The mounting member,
  A small diameter portion provided with the lower groove portion,
  A large diameter portion provided with the upper groove portion,
  Has,
  On the inner peripheral surface of the recess, a step is provided, and the inner diameter of the recess in the axial direction above the step is larger than the outer diameter of the lower seal member,
On the outer peripheral surface of the mounting member, a groove is provided between the upper groove and the lower groove, and is connected to an oil passage of the valve body.
  The lateral hole, an opening at one end thereof is provided on the bottom surface of the groove, and is connected to the groove,
In the concave portion, a diameter in the axial direction above the step is equal to the outer diameter of the large diameter portion, a diameter in the axial direction below the step is equal to the outer diameter of the small diameter portion, and one end of an oil passage of the valve body. The opening is provided on the inner peripheral surface of the concave portion in the axial direction above the step. The groove portion is formed in the large-diameter portion in the axial direction from the lower end of the large-diameter portion to the step and the opening. And a lower end of the large diameter portion rests on the step.

A hydraulic sensor module in which a sensor unit for detecting oil pressure is attached to a valve body provided with an oil passage therein, and a column-shaped attachment member tightly fixed to a lower surface of the sensor unit; A concave portion in which the mounting member is fitted; provided in the valve body, at least an end portion extending in a radial direction of the mounting member, and connected to the concave portion; and an oil passage provided in the mounting member; A horizontal hole connected to the mounting member and extending in the axial direction from a side surface of the mounting member; a vertical hole provided in the mounting member, extending upward in the axial direction from the horizontal hole, and reaching the lower surface of the sensor unit; and a whole outer peripheral surface of the mounting member. An upper groove and a lower groove provided on the upper side and the lower side in the axial direction with the lateral hole interposed therebetween, and the upper groove and the An annular seal member disposed in the side groove portion; and a lower hole provided inside the mounting member and extending downward in the axial direction from the lateral hole, wherein a diameter of the vertical hole is larger than a diameter of the lower hole. Sensor module.