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JP5843387B2 - Position detection sensor, clutch actuator provided with the same, and clutch device provided with the same - Google Patents

Position detection sensor, clutch actuator provided with the same, and clutch device provided with the same Download PDF

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Publication number
JP5843387B2
JP5843387B2 JP2011222887A JP2011222887A JP5843387B2 JP 5843387 B2 JP5843387 B2 JP 5843387B2 JP 2011222887 A JP2011222887 A JP 2011222887A JP 2011222887 A JP2011222887 A JP 2011222887A JP 5843387 B2 JP5843387 B2 JP 5843387B2
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position detection
magnetic field
clutch
linear movement
detection sensor
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JP2013083516A (en
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篤史 鈴木
篤史 鈴木
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Bosch Corp
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Bosch Corp
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Priority to CN201210370502.4A priority patent/CN103033201B/en
Priority to KR1020120110436A priority patent/KR101384225B1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K23/00—Arrangement or mounting of control devices for vehicle transmissions, or parts thereof, not otherwise provided for
    • B60K23/02—Arrangement or mounting of control devices for vehicle transmissions, or parts thereof, not otherwise provided for for main transmission clutches
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
    • F16H59/02—Selector apparatus
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
    • G01D5/14—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
    • G01D5/142—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage using Hall-effect devices
    • G01D5/145—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage using Hall-effect devices influenced by the relative movement between the Hall device and magnetic fields

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
  • Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)

Description

本発明は、被位置検出部材の直線状の移動に応じて直線状に移動するとともに磁界を発生する磁界発生部材の磁界の変化を検出することで、被位置検出部材の位置を検出する位置検出センサの技術分野、この位置検出センサを備えたクラッチアクチュエータの技術分野、およびクラッチアクチュエータを備えたクラッチ装置の技術分野に関するものである。   The present invention detects a position of a position detection member by detecting a change in the magnetic field of a magnetic field generation member that moves linearly according to the linear movement of the position detection member and generates a magnetic field. The present invention relates to a technical field of a sensor, a technical field of a clutch actuator including the position detection sensor, and a technical field of a clutch device including the clutch actuator.

従来、車両のクラッチ制御やチェンジレバー制御等の種々の制御には、磁気センサを用い、被位置検出部材の直線状の移動に応じて直線移動するとともに磁界を発生する磁界発生部材の磁界の変化を磁界検出部で検出することで、被位置検出部材の位置を検出する位置検出センサが多々用いられている。このような位置検出センサとして、被位置検出部材であるチェンジレバーの移動に応じて直線移動するシャフトに磁界発生部材であるマグネットを設けるとともに、シャフトの移動とともに移動するマグネットの磁界の変化を磁界検出部で検出することで、チェンジレバーの位置を検出する位置検出センサが知られている（例えば、特許文献１参照）。   Conventionally, magnetic sensors are used for various controls such as vehicle clutch control and change lever control, and the magnetic field of the magnetic field generating member that linearly moves and generates a magnetic field in accordance with the linear movement of the position detection member is changed. A position detection sensor that detects the position of the position detection member by detecting the position with a magnetic field detection unit is often used. As such a position detection sensor, a magnet that is a magnetic field generating member is provided on a shaft that moves linearly in accordance with the movement of a change lever that is a position detection member, and a change in the magnetic field of the magnet that moves as the shaft moves is detected. A position detection sensor that detects the position of a change lever by detecting at a section is known (see, for example, Patent Document 1).

図６は、従来のこのような磁気センサを用いた位置検出センサを模式的に示す図である。図６中、１は位置検出センサ、２は図６において位置が検出される直線状に移動可能な被位置検出部材、３は被位置検出部材２に設けられた磁石を有する磁界発生部材、４は磁界発生部材３の磁石の磁界を検出して電気信号に変換する、例えばホール素子やコイル等の磁界検出部、５は磁界検出部４で検出した磁界の変化の電気信号を読み出す信号読出部、６は信号読出部５からの電気信号が入力される電子制御装置（ＥＣＵ）である。その場合、位置検出センサ１は磁界発生部材３および磁界検出部４から構成される。   FIG. 6 is a diagram schematically showing a conventional position detection sensor using such a magnetic sensor. In FIG. 6, 1 is a position detection sensor, 2 is a position detection member that can move linearly in FIG. 6, and 3 is a magnetic field generation member having a magnet provided on the position detection member 2. Detects the magnetic field of the magnet of the magnetic field generating member 3 and converts it into an electric signal, for example, a magnetic field detecting unit such as a Hall element or a coil, 5 is a signal reading unit for reading out the electric signal of the change in magnetic field detected by the magnetic field detecting unit , 6 is an electronic control unit (ECU) to which an electric signal from the signal reading unit 5 is inputted. In that case, the position detection sensor 1 includes a magnetic field generation member 3 and a magnetic field detection unit 4.

このような位置検出センサ１においては、被位置検出部材２が図６において左右方向に直線移動すると、磁界発生部材３も被位置検出部材２と同方向に一体に直線移動する。この磁界発生部材３の移動により、磁界検出部４が検出する磁界発生部材３の磁界が変化する。磁界検出部４は検出した磁界発生部材３の磁界の変化を検出して電圧の変化等の電気信号に変換する。そして、信号読出部５が信号読出部磁界検出部４で検出した磁界の変化の電気信号を読み出して、例えば電子制御装置（ＥＣＵ）６に送出する。ＥＣＵ６は、信号読出部５からの磁界の変化の電気信号に基づいて被位置検出部材２の位置を判断する。   In such a position detection sensor 1, when the position detection member 2 moves linearly in the left-right direction in FIG. 6, the magnetic field generation member 3 also moves linearly in the same direction as the position detection member 2. Due to the movement of the magnetic field generating member 3, the magnetic field of the magnetic field generating member 3 detected by the magnetic field detector 4 changes. The magnetic field detection unit 4 detects the detected change in the magnetic field of the magnetic field generating member 3 and converts it into an electrical signal such as a change in voltage. Then, the signal reading unit 5 reads out the electric signal of the change of the magnetic field detected by the signal reading unit magnetic field detection unit 4 and sends it out to, for example, an electronic control unit (ECU) 6. The ECU 6 determines the position of the position detection member 2 based on the electric signal indicating the change in the magnetic field from the signal reading unit 5.

特開２００７−９９２５８号公報。JP 2007-99258 A.

ところで、近年、従来の被位置検出部材２の移動量に比べてかなり大きい移動量の被位置検出部材２の位置を検出することが求められる場合がある。しかし、このような場合従来の位置検出センサ１では、被位置検出部材２の直線移動方向の磁界発生部材３の長さＬ′が大きな被位置検出部材２の移動量に対して短いため、被位置検出部材２の位置を正確に検出することが難しいという問題がある。   By the way, in recent years, it may be required to detect the position of the position detection member 2 having a considerably large movement amount compared to the movement amount of the conventional position detection member 2. However, in such a case, in the conventional position detection sensor 1, the length L ′ of the magnetic field generating member 3 in the linear movement direction of the position detection member 2 is short with respect to the large movement amount of the position detection member 2. There is a problem that it is difficult to accurately detect the position of the position detection member 2.

そこで、図７に示すように被位置検出部材２の直線移動方向の磁界発生部材３の磁石の
長さＬを従来の磁石に比べて単純に長くすることが考えられる。しかしながら、磁石は比較的高価であるため、磁界発生部材３の磁石の長さＬを単純に長くしたのでは、磁石の体積が増加して位置検出センサ１のコストが高くなるという別の問題が生じる。 Therefore, as shown in FIG. 7, it is conceivable that the length L of the magnet of the magnetic field generating member 3 in the linear movement direction of the position detection member 2 is simply made longer than that of the conventional magnet. However, since the magnet is relatively expensive, simply increasing the length L of the magnet of the magnetic field generating member 3 causes another problem that the volume of the magnet increases and the cost of the position detection sensor 1 increases. Arise.

本発明はこのような事情に鑑みてなされたものであって、その目的は、被位置検出部材の直線移動が大きい場合にも磁界発生部材による位置検出をより正確に検出しながら、しかもコストを安くすることのできる位置検出センサを提供することである。
本発明の他の目的は、本発明の位置検出センサを備えることで動力伝達制御をより正確に行うことのできるクラッチアクチュエータ、およびこれを備えたクラッチ装置を提供することである。 The present invention has been made in view of such circumstances, and its purpose is to detect the position detection by the magnetic field generating member more accurately and reduce the cost even when the linear movement of the position detection member is large. It is to provide a position detection sensor that can be made cheap.
Another object of the present invention is to provide a clutch actuator that can perform power transmission control more accurately by including the position detection sensor of the present invention, and a clutch device including the clutch actuator.

前述の課題を解決するために、本発明に係る位置検出センサは、位置が検出される被位置検出部材の直線移動に応じて直線移動するとともに磁界を発生する磁界発生部材と、前記磁界発生部材の磁界を検出する磁界検出部とを少なくとも有し、前記被位置検出部材の直線移動により前記磁界発生部材が直線移動するとき、前記磁界検出部で前記磁界の変化を検出することで、前記被位置検出部材の位置を検出する位置検出センサにおいて、前記磁界発生部材が、予め定められた第１の所定数の磁石と予め定められた第２の所定数の軟磁性体とが前記被位置検出部材の直線移動方向に直線状に接合されて形成されていることを特徴としている。   In order to solve the above-described problems, a position detection sensor according to the present invention includes a magnetic field generation member that linearly moves in accordance with a linear movement of a position detection member whose position is detected and generates a magnetic field, and the magnetic field generation member A magnetic field detection unit for detecting the magnetic field of the position detection member, and when the magnetic field generation member linearly moves by the linear movement of the position detection member, the magnetic field detection unit detects the change in the magnetic field, In the position detection sensor for detecting the position of the position detection member, the magnetic field generating member includes a predetermined first predetermined number of magnets and a predetermined second predetermined number of soft magnetic bodies. It is characterized in that it is formed by linearly joining in the linear movement direction of the member.

また、本発明に係る位置検出センサは、前記磁石と前記軟磁性体が、前記被位置検出部材の直線移動方向に交互に配設されていることを特徴としている。   The position detection sensor according to the present invention is characterized in that the magnets and the soft magnetic bodies are alternately arranged in a linear movement direction of the position detection member.

更に、本発明に係る位置検出センサは、前記磁界発生部材が、前記被位置検出部材の直線移動方向の中心を通りかつ前記被位置検出部材の直線移動方向と直交する面に関して対称に形成されていることを特徴としている。   In the position detection sensor according to the present invention, the magnetic field generation member is formed symmetrically with respect to a plane that passes through the center of the position detection member in the linear movement direction and is orthogonal to the linear movement direction of the position detection member. It is characterized by being.

一方、本発明に係るクラッチアクチュエータは、第１クラッチ板を第２クラッチ板に対して当接離間させるようにストロークするピストンと、前記ピストンのストロークに応じて直線移動する直線移動部材と、前記直線移動部材の直線移動を検出する位置検出センサとを少なくとも備えるクラッチアクチュエータにおいて、前記位置検出センサが、前述の本発明の位置検出センサのいずれか１つであり、前記被位置検出部材が前記直線移動部材であり、前記位置検出センサが前記直線移動部材の位置を検出することを特徴としている。   On the other hand, a clutch actuator according to the present invention includes a piston that strokes the first clutch plate so as to contact and separate from the second clutch plate, a linear moving member that linearly moves according to the stroke of the piston, and the linear A clutch actuator comprising at least a position detection sensor for detecting linear movement of a moving member, wherein the position detection sensor is any one of the position detection sensors of the present invention described above, and the position detection member is the linear movement. It is a member, and the position detection sensor detects the position of the linearly moving member.

また、本発明に係るクラッチ装置は、互いに当接離間可能に設けられた第１および第２クラッチ板と、前記第１クラッチ板を前記第２クラッチ板に対して当接離間させるようにストロークするピストンを有するクラッチアクチュエータとを少なくとも備えるクラッチ装置において、前記クラッチアクチュエータが、前述の本発明のクラッチアクチュエータであることを特徴としている。   Further, the clutch device according to the present invention strokes the first and second clutch plates provided so as to be able to contact and separate from each other, and the first clutch plate to contact and separate from the second clutch plate. A clutch device including at least a clutch actuator having a piston is characterized in that the clutch actuator is the above-described clutch actuator of the present invention.

更に、本発明に係るクラッチ装置は、前記位置検出センサの前記磁界発生部材が前記直線移動部材に設けられていることを特徴としている。   Furthermore, the clutch device according to the present invention is characterized in that the magnetic field generating member of the position detection sensor is provided on the linearly moving member.

このように構成された本発明に係る位置検出センサによれば、磁石に軟磁性体を接合して磁界発生部材を構成しているので、軟磁性体が磁石により磁化されることにより磁界発生部材を１つの磁石として構成することができる。これにより、被位置検出部材の直線移動方向の磁界発生部材の長さを従来の磁界発生部材の長さに比べて長く設定することがで
きる。したがって、被位置検出部材の直線移動が大きい場合にも磁界発生部材による被位置検出部材の位置検出をより正確に検出することが可能となる。 According to the position detection sensor of the present invention configured as described above, the magnetic field generating member is configured by joining the soft magnetic body to the magnet, and therefore the magnetic field generating member is obtained by magnetizing the soft magnetic body by the magnet. Can be configured as one magnet. Thereby, the length of the magnetic field generating member in the linear movement direction of the position detection member can be set longer than the length of the conventional magnetic field generating member. Therefore, even when the linear movement of the position detection member is large, the position detection of the position detection member by the magnetic field generation member can be detected more accurately.

また、被位置検出部材の直線移動方向の磁界発生部材の長さが従来の磁界発生部材の長さに比べて長く設定されても、磁石よりコストの安い軟磁性体を用いているので、磁界発生部材の体積が磁石だけで構成される磁界発生部材に比べて軟磁性体の体積の分低減する。これにより、磁界発生部材を効果的に安価に製造することができる。
このようにして、被位置検出部材の直線移動が大きい場合にも磁界発生部材による位置検出をより正確に検出しながら、しかもコストを安くすることが可能となる。 Even if the length of the magnetic field generating member in the linear movement direction of the position detection member is set longer than the length of the conventional magnetic field generating member, a soft magnetic material that is less expensive than a magnet is used. The volume of the generating member is reduced by the volume of the soft magnetic material as compared with the magnetic field generating member constituted only by the magnet. Thereby, a magnetic field generation member can be manufactured effectively and inexpensively.
In this way, even when the position detection member moves linearly, the position detection by the magnetic field generating member can be detected more accurately and the cost can be reduced.

一方、本発明に係るクラッチアクチュエータおよびクラッチ装置によれば、本発明の位置検出センサを備えているので、クラッチ板のストロークが従来のクラッチ板より大きい場合にも、クラッチの制御をより正確に行うことができるとともに、長い直線移動を検出可能な位置検出センサをクラッチに設けても、クラッチのコストの上昇を抑制することが可能となる。   On the other hand, according to the clutch actuator and the clutch device according to the present invention, since the position detection sensor of the present invention is provided, even when the stroke of the clutch plate is larger than that of the conventional clutch plate, the clutch is controlled more accurately. In addition, even if a position detection sensor capable of detecting a long linear movement is provided in the clutch, an increase in the cost of the clutch can be suppressed.

本発明に係る位置検出センサの実施の形態の第１例を模式的に示すブロック図である。It is a block diagram showing typically the 1st example of an embodiment of a position detection sensor concerning the present invention. 図１に示す位置検出センサを備える本発明のクラッチの実施の形態の一例を模式的に示す図である。It is a figure which shows typically an example of embodiment of the clutch of this invention provided with the position detection sensor shown in FIG. 本発明に係る位置検出センサの実施の形態の第２例を模式的に示すブロック図である。It is a block diagram showing typically the 2nd example of an embodiment of a position detection sensor concerning the present invention. 本発明に係る位置検出センサの実施の形態の第３例を模式的に示すブロック図である。It is a block diagram showing typically the 3rd example of an embodiment of a position detection sensor concerning the present invention. 本発明に係る位置検出センサの実施の形態の第４例を模式的に示すブロック図である。It is a block diagram which shows typically the 4th example of embodiment of the position detection sensor which concerns on this invention. 従来の磁気センサを用いた位置検出センサを模式的に示す図である。It is a figure which shows typically the position detection sensor using the conventional magnetic sensor. 従来の位置検出センサの問題を解決可能であると考えられる位置検出センサを模式的に示す図である。It is a figure which shows typically the position detection sensor considered that the problem of the conventional position detection sensor can be solved.

以下、図面を用いて本発明を実施するための形態について説明する。
図１は本発明に係る位置検出センサの実施の形態の第１例を模式的に示すブロック図である。なお、前述の図６に示す構成要素と同じ構成要素には同じ符号を付すことで、それらの詳細な説明は省略する。 Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.
FIG. 1 is a block diagram schematically showing a first example of an embodiment of a position detection sensor according to the present invention. In addition, the same code | symbol is attached | subjected to the same component as the component shown in above-mentioned FIG. 6, and those detailed description is abbreviate | omitted.

図１に示すように、第１例の位置検出センサ１の磁界発生部材３は、被位置検出部材２の直線移動方向の長さが所定長さで磁石により磁化される例えば鉄等の軟磁性体３ａと、同じ大きさの一対の磁石３ｂ,３ｃとを有している。一対の磁石３ｂ,３ｃは、それぞれ、軟磁性体３ａの両端に被位置検出部材２の直線移動方向に直線状に接合されている。すなわち、磁石３ｂ,３ｃと軟磁性体３ａは被位置検出部材２の直線移動方向に交互に配設さ
れる。その場合、磁石３ｂ,３ｃと軟磁性体３ａは、磁石３ｂ,３ｃの磁力で分離可能に接合されるか、あるいは適宜の接着剤で分離不能に接合される。 As shown in FIG. 1, the magnetic field generating member 3 of the position detection sensor 1 of the first example is a soft magnetic material such as iron that is magnetized by a magnet with a predetermined length in the linear movement direction of the position detection member 2. It has a body 3a and a pair of magnets 3b, 3c of the same size. The pair of magnets 3b and 3c are joined linearly in the linear movement direction of the position detection member 2 to both ends of the soft magnetic body 3a. That is, the magnets 3 b and 3 c and the soft magnetic body 3 a are alternately arranged in the linear movement direction of the position detection member 2. In that case, the magnets 3b and 3c and the soft magnetic body 3a are joined so as to be separable by the magnetic force of the magnets 3b and 3c, or joined so as not to be separable by an appropriate adhesive.

そして、被位置検出部材２の直線移動方向の磁界発生部材３の長さＬは、図６に示す被位置検出部材２の直線移動方向の従来の磁界発生部材３の長さＬ′より長く設定されている。つまり、磁界発生部材３は、軟磁性体３ａが磁石３ｂ,３ｃによって磁化されて被位
置検出部材２の直線移動方向の長さＬの１つの長い磁石として構成される。その場合、磁界発生部材３は被位置検出部材２の直線移動方向の中心を通りかつ被位置検出部材２の直
線移動方向と直交する面に関して対称に形成される。 The length L of the magnetic field generating member 3 in the linear movement direction of the position detection member 2 is set longer than the length L ′ of the conventional magnetic field generation member 3 in the linear movement direction of the position detection member 2 shown in FIG. Has been. That is, the magnetic field generating member 3 is configured as one long magnet having the length L in the linear movement direction of the position detection member 2 by the soft magnetic body 3a being magnetized by the magnets 3b and 3c. In this case, the magnetic field generating member 3 is formed symmetrically with respect to a plane that passes through the center of the position detection member 2 in the linear movement direction and is orthogonal to the linear movement direction of the position detection member 2.

このように構成された第１例の位置検出センサ１によれば、磁石３ｂ,３ｃに軟磁性体
３ａを接合して磁界発生部材３を構成しているので、軟磁性体３ａが磁石３ｂ,３ｃによ
り磁化されることにより磁界発生部材３を１つの磁石として構成することができる。これにより、被位置検出部材２の直線移動方向の磁界発生部材３の長さＬを従来の磁界発生部材３の長さＬ′に比べて長く設定することができる。したがって、被位置検出部材２の直線移動が大きい場合にも磁界発生部材３による被位置検出部材２の位置検出をより正確に検出することが可能となる。 According to the position detection sensor 1 of the first example configured as described above, since the soft magnetic body 3a is joined to the magnets 3b and 3c to form the magnetic field generating member 3, the soft magnetic body 3a is replaced with the magnets 3b and 3c. The magnetic field generating member 3 can be configured as one magnet by being magnetized by 3c. Thereby, the length L of the magnetic field generating member 3 in the linear movement direction of the position detection member 2 can be set longer than the length L ′ of the conventional magnetic field generating member 3. Therefore, even when the position detection member 2 moves linearly, the position detection of the position detection member 2 by the magnetic field generation member 3 can be detected more accurately.

また、被位置検出部材２の直線移動方向の磁界発生部材３の長さＬが従来の磁界発生部材３の長さＬ′に比べて長く設定されても、磁石よりコストの安い軟磁性体３ａを用いているので、磁界発生部材３の体積が磁石だけで構成される磁界発生部材に比べて軟磁性体３ａの体積の分低減する。これにより、磁界発生部材３を効果的に安価に製造することができる。
このようにして、被位置検出部材２の直線移動が大きい場合にも磁界発生部材３による位置検出をより正確に検出しながら、しかもコストを安くすることが可能となる。
第１例の位置検出センサ１の他の構成および他の作用効果は、図６に示す従来例と同じである。 Even if the length L of the magnetic field generating member 3 in the linear movement direction of the position detecting member 2 is set longer than the length L ′ of the conventional magnetic field generating member 3, the soft magnetic body 3a is cheaper than the magnet. Is used, the volume of the magnetic field generating member 3 is reduced by the volume of the soft magnetic body 3a as compared with the magnetic field generating member constituted only by magnets. Thereby, the magnetic field generation member 3 can be manufactured effectively and inexpensively.
In this way, even when the position detection member 2 is linearly moved, the cost can be reduced while detecting the position detection by the magnetic field generating member 3 more accurately.
Other configurations and other functions and effects of the position detection sensor 1 of the first example are the same as those of the conventional example shown in FIG.

図２は、図１に示す第１例の位置検出センサを備える本発明のクラッチアクチュエータの実施の形態の一例、およびこのクラッチアクチュエータを備える本発明のクラッチ装置の実施の形態の一例を模式的に示す図である。
図２に示すように、この例のクラッチ装置７は、互いに当接離間可能な一対の第１および第２クラッチ板８,９と、第１クラッチ板８を作動するクラッチアクチュエータ１０と
、クラッチアクチュエータ１０を作動するための作動液を供給・排出制御するための電磁切換弁１１と、クラッチアクチュエータ１０へ作動液を供給するためのポンプ１２と、ポンプ１２を駆動するモータ１３と、作動液を貯留するリザーバタンク１４とを少なくとも備えている。 2 schematically shows an example of an embodiment of the clutch actuator of the present invention that includes the position detection sensor of the first example shown in FIG. 1, and an example of an embodiment of the clutch device of the present invention that includes this clutch actuator. FIG.
As shown in FIG. 2, the clutch device 7 of this example includes a pair of first and second clutch plates 8 and 9 that can contact and separate from each other, a clutch actuator 10 that operates the first clutch plate 8, and a clutch actuator An electromagnetic switching valve 11 for controlling supply / discharge of a hydraulic fluid for operating 10, a pump 12 for supplying hydraulic fluid to the clutch actuator 10, a motor 13 for driving the pump 12, and storing the hydraulic fluid And at least a reservoir tank 14.

クラッチアクチュエータ１０は、シリンダ部１０ａと、シリンダ部１０ａ内に液圧室１０ｂを液密に区画するピストン１０ｃと、ピストン１０ｃを第１クラッチ板８に連結するピストンロッド１０ｄ（本発明の直線移動部材に相当）と、ピストン１０ｃを非作動位置の方へ常時付勢するリタースプリング１０ｅとを有する。ピストン１０ｃは第１クラッチ板８を第２クラッチ板９に対して当接離間させるようにストロークする。その場合、この例のクラッチ装置７では、クラッチアクチュエータ１０のピストン１０ｃのストロークが従来のクラッチアクチュエータのピストン１０ｃのストロークより長く設定されている。したがって、クラッチアクチュエータ１０のピストン１０ｃがストロークするとき、ピストンロッド１０ｄの直線移動が従来のクラッチのアクチュエータのピストンロッドの直線移動よりかなり長くなる。また、電磁切換弁１１は、非作動時には図２に示すようにクラッチアクチュエータ１０の液圧室１０ｂをポンプ１２から遮断しかつリザーバタンク１４に接続するとともに、作動時にはクラッチアクチュエータ１０の液圧室１０ｂをリザーバタンク１４から遮断しかつポンプ１２に接続する。   The clutch actuator 10 includes a cylinder portion 10a, a piston 10c that fluid-tightly partitions the hydraulic chamber 10b in the cylinder portion 10a, and a piston rod 10d that connects the piston 10c to the first clutch plate 8 (the linear movement member of the present invention). And a litter spring 10e that constantly urges the piston 10c toward the inoperative position. The piston 10c strokes so that the first clutch plate 8 contacts and separates from the second clutch plate 9. In that case, in the clutch device 7 of this example, the stroke of the piston 10c of the clutch actuator 10 is set longer than the stroke of the piston 10c of the conventional clutch actuator. Therefore, when the piston 10c of the clutch actuator 10 strokes, the linear movement of the piston rod 10d is considerably longer than the linear movement of the piston rod of the conventional clutch actuator. Further, as shown in FIG. 2, the electromagnetic switching valve 11 shuts off the hydraulic pressure chamber 10b of the clutch actuator 10 from the pump 12 and connects to the reservoir tank 14 as shown in FIG. Is disconnected from the reservoir tank 14 and connected to the pump 12.

更に、この例のクラッチ装置７は、図１に示す第１例の位置検出センサ１を備えている。その場合、位置検出センサ１の磁界発生部材３は、クラッチアクチュエータ１０のピストンロッド１０ｄ（本発明における被位置検出部材に相当）に設けられている。したがって、磁界発生部材３はピストンロッド１０ｄと一体に直線移動する。また、位置検出センサ１の磁界検出部４は信号読出部５を介して電子制御装置（ＥＣＵ）６に接続されている。また、電磁切換弁１１およびポンプ１２のモータ１３もＥＣＵ６に接続されている。   Further, the clutch device 7 of this example includes the position detection sensor 1 of the first example shown in FIG. In this case, the magnetic field generating member 3 of the position detection sensor 1 is provided on the piston rod 10d (corresponding to the position detection member in the present invention) of the clutch actuator 10. Therefore, the magnetic field generating member 3 moves linearly integrally with the piston rod 10d. The magnetic field detection unit 4 of the position detection sensor 1 is connected to an electronic control unit (ECU) 6 via a signal reading unit 5. The electromagnetic switching valve 11 and the motor 13 of the pump 12 are also connected to the ECU 6.

このように構成されたこの例のクラッチ装置７においては、図２に示すようにクラッチ装置７の切断時には、クラッチアクチュエータ１０の液圧室１０ｂが電磁切換弁１１によりリザーバタンク１４に接続され、ピストン１０ｃが非作動位置に設定される。したがって、クラッチアクチュエータ１０が非作動状態になっている。クラッチ装置７を接続するために、ＥＣＵ６が電磁切換弁１１を切り換えると、クラッチアクチュエータ１０の液圧室１０ｂがポンプ１２に接続される。同時に、ＥＣＵ６はモータ１３を駆動してポンプ１２を作動する。これにより、作動液が液圧室１０ｂに供給されてピストン１０ｃがストロークする。したがって、第１クラッチ板８が第２クラッチ板９の方へ移動して第２クラッチ板９に当接する。これにより、クラッチが接続される。このとき、ＥＣＵ６は、位置検出センサ１で検出されたピストンロッド１０ｄの直線移動の位置に基づいて電磁切換弁１１およびモータ１３を制御して、クラッチの接続を制御する。クラッチ装置７を切断するために、ＥＣＵ６が電磁切換弁１１を非作動位置に切り換えると、クラッチアクチュエータ１０の液圧室１０ｂがリザーバタンク１４に接続される。同時に、ＥＣＵ６はモータ１３を停止してポンプ１２の作動を停止する。これにより、液圧室１０ｂの作動液がリザーバタンク１４に排出され、ピストン１０ｃがリターンスプリング１０ｅの付勢力により図２に示す非作動位置となる。   In the clutch device 7 of this example configured as described above, as shown in FIG. 2, when the clutch device 7 is disconnected, the hydraulic chamber 10b of the clutch actuator 10 is connected to the reservoir tank 14 by the electromagnetic switching valve 11, and the piston 10c is set to the inoperative position. Therefore, the clutch actuator 10 is in an inoperative state. When the ECU 6 switches the electromagnetic switching valve 11 to connect the clutch device 7, the hydraulic pressure chamber 10 b of the clutch actuator 10 is connected to the pump 12. At the same time, the ECU 6 drives the motor 13 to operate the pump 12. As a result, the hydraulic fluid is supplied to the hydraulic chamber 10b and the piston 10c strokes. Accordingly, the first clutch plate 8 moves toward the second clutch plate 9 and comes into contact with the second clutch plate 9. As a result, the clutch is connected. At this time, the ECU 6 controls the connection of the clutch by controlling the electromagnetic switching valve 11 and the motor 13 based on the position of the linear movement of the piston rod 10d detected by the position detection sensor 1. When the ECU 6 switches the electromagnetic switching valve 11 to the non-operation position in order to disconnect the clutch device 7, the hydraulic pressure chamber 10 b of the clutch actuator 10 is connected to the reservoir tank 14. At the same time, the ECU 6 stops the motor 13 and stops the operation of the pump 12. As a result, the hydraulic fluid in the hydraulic chamber 10b is discharged to the reservoir tank 14, and the piston 10c is brought into the non-operating position shown in FIG. 2 by the urging force of the return spring 10e.

この例のクラッチアクチュエータ１０およびクラッチ装置７によれば、第１例の位置検出センサを備えているので、クラッチ板８のストロークが従来のクラッチ板より大きい場合にも、クラッチ装置７の制御をより正確に行うことができるとともに、長い直線移動を検出可能な位置検出センサ１をクラッチアクチュエータ１０およびクラッチ装置７に設けても、クラッチアクチュエータ１０およびクラッチ装置７のコストの上昇を抑制することが可能となる。   According to the clutch actuator 10 and the clutch device 7 of this example, since the position detection sensor of the first example is provided, even when the stroke of the clutch plate 8 is larger than the conventional clutch plate, the control of the clutch device 7 is further improved. Even if the position detection sensor 1 capable of detecting a long linear movement is provided in the clutch actuator 10 and the clutch device 7, it is possible to suppress an increase in cost of the clutch actuator 10 and the clutch device 7. Become.

図３は、本発明に係る位置検出センサの実施の形態の第２例を模式的に示すブロック図である。
図３に示すように、第２例の位置検出センサ１は、磁界発生部材３が３個の磁石３ｄ,
３ｅ,３ｆと２個の軟磁性体３ｇ,３ｈとを有する。その場合、２個の軟磁性体３ｇ,３ｈ
がそれぞれ３個の磁石３ｄ,３ｅ,３ｆの間に配設されて分離可能にあるいは分離不能に直線状に接合されている。そして、被位置検出部材２の直線移動方向の磁界発生部材３の長さＬは、図６に示す被位置検出部材２の直線移動方向の従来の磁界発生部材３の長さＬ′より長く設定されている。 FIG. 3 is a block diagram schematically showing a second example of the embodiment of the position detection sensor according to the present invention.
As shown in FIG. 3, in the position detection sensor 1 of the second example, the magnetic field generating member 3 includes three magnets 3d,
3e, 3f and two soft magnetic bodies 3g, 3h. In that case, two soft magnetic bodies 3g, 3h
Are arranged between the three magnets 3d, 3e, and 3f, and are joined in a straight line such that they can be separated or cannot be separated. The length L of the magnetic field generating member 3 in the linear movement direction of the position detection member 2 is set longer than the length L ′ of the conventional magnetic field generation member 3 in the linear movement direction of the position detection member 2 shown in FIG. Has been.

第２例の位置検出センサ１の他の構成および作用効果は、第１例の位置検出センサ１と同様である。また、第２例の位置検出センサ１を備えるクラッチ装置７の構成および作用効果は、第１例の位置検出センサ１を備えるクラッチ装置７と同様である。   Other configurations and operational effects of the position detection sensor 1 of the second example are the same as those of the position detection sensor 1 of the first example. Further, the configuration and operational effects of the clutch device 7 including the position detection sensor 1 of the second example are the same as those of the clutch device 7 including the position detection sensor 1 of the first example.

図４は、本発明に係る位置検出センサの実施の形態の第３例を模式的に示すブロック図である。
図４に示すように、第３例の位置検出センサ１は、第１例の位置検出センサ１とは逆に、磁界発生部材３が１個の磁石３ｉと一対の軟磁性体３ｊ,３ｋとを有する。その場合、
一対の軟磁性体３ｊ,３ｋがそれぞれ１個の磁石３ｉの両端に分離可能にあるいは分離不
能に直線状に接合されている。そして、被位置検出部材２の直線移動方向の磁界発生部材３の長さＬは、図６に示す被位置検出部材２の直線移動方向の従来の磁界発生部材３の長さＬ′より長く設定されている。 FIG. 4 is a block diagram schematically showing a third example of the embodiment of the position detection sensor according to the present invention.
As shown in FIG. 4, the position detection sensor 1 of the third example, contrary to the position detection sensor 1 of the first example, includes a magnetic field generating member 3 having one magnet 3 i and a pair of soft magnetic bodies 3 j and 3 k. Have In that case,
A pair of soft magnetic bodies 3j and 3k are linearly joined to both ends of one magnet 3i so as to be separable or inseparable. The length L of the magnetic field generating member 3 in the linear movement direction of the position detection member 2 is set longer than the length L ′ of the conventional magnetic field generation member 3 in the linear movement direction of the position detection member 2 shown in FIG. Has been.

第３例の位置検出センサ１の他の構成および作用効果は、第１例の位置検出センサ１と同様である。また、第３例の位置検出センサ１を備えるクラッチ装置７の構成および作用効果は、第１例の位置検出センサ１を備えるクラッチ装置７と同様である。   Other configurations and operational effects of the position detection sensor 1 of the third example are the same as those of the position detection sensor 1 of the first example. Further, the configuration and operational effects of the clutch device 7 including the position detection sensor 1 of the third example are the same as those of the clutch device 7 including the position detection sensor 1 of the first example.

図５は、本発明に係る位置検出センサの実施の形態の第４例を模式的に示すブロック図である。
図５に示すように、第４例の位置検出センサ１は、第３例の位置検出センサ１とは逆に、磁界発生部材３が２個の磁石３ｍ,３ｎと３個の軟磁性体３ｏ,３ｐ,３ｑとを有する。
その場合、２個の磁石３ｍ,３ｎがそれぞれ３個の軟磁性体３ｏ,３ｐ,３ｑの間に配設さ
れて分離可能にあるいは分離不能に直線状に接合されている。そして、被位置検出部材２の直線移動方向の磁界発生部材３の長さＬは、図６に示す被位置検出部材２の直線移動方向の従来の磁界発生部材３の長さＬ′より長く設定されている。 FIG. 5 is a block diagram schematically showing a fourth example of the embodiment of the position detection sensor according to the present invention.
As shown in FIG. 5, in the position detection sensor 1 of the fourth example, the magnetic field generating member 3 includes two magnets 3m and 3n and three soft magnetic bodies 3o, contrary to the position detection sensor 1 of the third example. , 3p, 3q.
In that case, the two magnets 3m, 3n are disposed between the three soft magnetic bodies 3o, 3p, 3q, respectively, and are linearly joined so as to be separable or not separable. The length L of the magnetic field generating member 3 in the linear movement direction of the position detection member 2 is set longer than the length L ′ of the conventional magnetic field generation member 3 in the linear movement direction of the position detection member 2 shown in FIG. Has been.

第４例の位置検出センサ１の他の構成および作用効果は、第１例の位置検出センサ１と同様である。また、第４例の位置検出センサ１を備えるクラッチ装置７の構成および作用効果は、第１例の位置検出センサ１を備えるクラッチ装置７と同様である。   Other configurations and operational effects of the position detection sensor 1 of the fourth example are the same as those of the position detection sensor 1 of the first example. Further, the configuration and operational effects of the clutch device 7 including the position detection sensor 1 of the fourth example are the same as those of the clutch device 7 including the position detection sensor 1 of the first example.

なお、本発明は前述の各例に限定されることはなく、種々設計変更が可能である。例えば、磁性発生部材３つまり磁石は被位置検出部材２に直接設ける必要はなく、被位置検出部材２の直線移動に応じて直線移動する部材に設けることもできる。また、磁石の数および軟磁性体の数はいずれも任意に設定することができる。その場合、各磁石および各軟磁性体は、それぞれ、被位置検出部材２の直線移動方向の中心を通りかつ被位置検出部材２の直線移動方向と直交する面に関して対称に形成される。要は、本発明は、特許請求の範囲に記載された技術事項の範囲内で種々の設計変更が可能である。   In addition, this invention is not limited to each above-mentioned example, A various design change is possible. For example, the magnetism generating member 3, that is, the magnet does not have to be directly provided on the position detection member 2, but can be provided on a member that moves linearly according to the linear movement of the position detection member 2. Moreover, both the number of magnets and the number of soft magnetic bodies can be set arbitrarily. In this case, each magnet and each soft magnetic body are formed symmetrically with respect to a plane passing through the center of the position detection member 2 in the linear movement direction and orthogonal to the linear movement direction of the position detection member 2. In short, the present invention can be modified in various ways within the scope of the technical matters described in the claims.

本発明に係る位置検出センサは、被位置検出部材の直線移動に応じて直線状に移動するとともに磁界を発生する磁界発生部材の磁界の変化を検出することで、被位置検出部材の位置を検出する位置検出センサに好適に利用可能である。
また、本発明に係るクラッチは、本発明の位置検出センサを用いて制御可能なクラッチ好適に利用可能である。 The position detection sensor according to the present invention detects the position of the position detection member by detecting a change in the magnetic field of the magnetic field generation member that moves linearly according to the linear movement of the position detection member and generates a magnetic field. It can be suitably used for a position detection sensor.
The clutch according to the present invention can be suitably used as a clutch that can be controlled using the position detection sensor of the present invention.

１…位置検出センサ、２…被位置検出部材、３…磁界発生部材、３ａ,３ｇ,３ｈ,３ｊ,３ｋ,３ｏ,３ｐ,３ｑ…軟磁性体、３ｂ,３ｃ,３ｄ,３ｅ,３ｆ,３ｉ,３ｍ,３ｎ…磁石、４…磁界検出部、５…信号読出部、６…電子制御装置（ＥＣＵ）、７…クラッチ装置、８…第１クラッチ板、９…第２クラッチ板、１０…クラッチアクチュエータ、１０ｂ…液圧室、１０ｃ…ピストン、１０ｄ…ピストンロッド、１０ｅ…リタースプリング、１１…電磁切換弁、１２…ポンプ、１３…モータ DESCRIPTION OF SYMBOLS 1 ... Position detection sensor, 2 ... Position detection member, 3 ... Magnetic field generation member, 3a, 3g, 3h, 3j, 3k, 3o, 3p, 3q ... Soft magnetic material, 3b, 3c, 3d, 3e, 3f, 3i , 3m, 3n ... magnets, 4 ... magnetic field detection unit, 5 ... signal reading unit, 6 ... electronic control unit (ECU), 7 ... clutch device, 8 ... first clutch plate, 9 ... second clutch plate, 10 ... clutch Actuator, 10b ... Hydraulic chamber, 10c ... Piston, 10d ... Piston rod, 10e ... Litter spring, 11 ... Electromagnetic switching valve, 12 ... Pump, 13 ... Motor

Claims (6)

位置が検出される被位置検出部材の直線移動に応じて直線移動するとともに磁界を発生する磁界発生部材と、前記磁界発生部材の磁界を検出する磁界検出部とを少なくとも有し、前記被位置検出部材の直線移動により前記磁界発生部材が直線移動するとき、前記磁界検出部で前記磁界の変化を検出することで、前記被位置検出部材の位置を検出する位置検出センサにおいて、
前記磁界発生部材は、所定数の磁石と所定数の軟磁性体とが前記被位置検出部材の直線移動方向に直線状に接合されて形成されており、
前記軟磁性体は、前記磁石と同じ大きさ又は前記磁石よりも大きい
ことを特徴とする位置検出センサ。 The position detection member includes at least a magnetic field generation member that linearly moves in accordance with the linear movement of the position detection member whose position is detected and generates a magnetic field, and a magnetic field detection unit that detects the magnetic field of the magnetic field generation member, In the position detection sensor for detecting the position of the position detection member by detecting the change of the magnetic field by the magnetic field detection unit when the magnetic field generating member linearly moves by the linear movement of the member,
The magnetic field generating member is formed by linearly joining a predetermined number of magnets and a predetermined number of soft magnetic bodies in the linear movement direction of the position detection member ,
The position detection sensor , wherein the soft magnetic body is the same size as the magnet or larger than the magnet . 前記磁石と前記軟磁性体は、前記被位置検出部材の直線移動方向に交互に配設されて分離可能に接合されており、直線移動方向における前記軟磁性体の長さは、前記磁石よりも長いことを特徴とする請求項１に記載の位置検出センサ。 The magnet and the soft magnetic body are alternately arranged in the linear movement direction of the position detection member and are separably joined, and the length of the soft magnetic body in the linear movement direction is larger than that of the magnet. position detecting sensor according to claim 1, wherein the longer. 前記磁界発生部材は、前記被位置検出部材の直線移動方向の中心を通りかつ前記被位置検出部材の直線移動方向と直交する面に関して対称に形成されていることを特徴とする請求項１または２に記載の位置検出センサ。   3. The magnetic field generating member is formed symmetrically with respect to a plane that passes through the center of the position detection member in the linear movement direction and is orthogonal to the linear movement direction of the position detection member. The position detection sensor described in 1. 第１クラッチ板を第２クラッチ板に対して当接離間させるようにストロークするピストンと、前記ピストンのストロークに応じて直線移動する直線移動部材と、前記直線移動部材の直線移動を検出する位置検出センサとを少なくとも備えるクラッチアクチュエータにおいて、
前記位置検出センサは、請求項１ないし３に記載のいずれか１つの位置検出センサであり、
前記被位置検出部材は前記直線移動部材であり、
前記位置検出センサは前記直線移動部材の位置を検出することを特徴とするクラッチアクチュエータ。 A piston that makes a stroke so that the first clutch plate contacts and separates from the second clutch plate, a linearly moving member that linearly moves in accordance with the stroke of the piston, and a position detection that detects the linear movement of the linearly moving member A clutch actuator comprising at least a sensor;
The position detection sensor is any one of the position detection sensors according to claims 1 to 3,
The position detection member is the linear movement member,
The clutch actuator, wherein the position detection sensor detects a position of the linearly moving member. 互いに当接離間可能に設けられた第１および第２クラッチ板と、前記第１クラッチ板を前記第２クラッチ板に対して当接離間させるようにストロークするピストンを有するクラッチアクチュエータとを少なくとも備えるクラッチ装置において、
前記クラッチアクチュエータは、請求項４に記載のクラッチアクチュエータであることを特徴とするクラッチ装置。 A clutch comprising at least first and second clutch plates provided so as to be able to contact and separate from each other, and a clutch actuator having a piston that strokes the first clutch plate so as to contact and separate from the second clutch plate. In the device
The clutch device according to claim 4, wherein the clutch actuator is the clutch actuator according to claim 4. 前記位置検出センサの前記磁界発生部材は前記直線移動部材に設けられていることを特徴とする請求項５に記載のクラッチ装置。   The clutch device according to claim 5, wherein the magnetic field generating member of the position detection sensor is provided on the linearly moving member.
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