Connecting structure of electromagnetic valve and hydraulic pressure control device

An connecting structure of an electromagnetic valve includes: a first connecting structure body that prohibits a relative movement between a hydraulic pressure circuit body and an electromagnetic valve in an axis line direction; a second connecting structure body that prohibits a relative movement therebetween in a plane orthogonal to the axis line direction; a third connecting structure body that prohibits a relative rotation about the axis therebetween; and a connection body that is prohibited from moving relatively to the hydraulic pressure circuit body, wherein the first connecting structure body includes a first target connection tool that is provided in an accommodation body and a first connection tool that locks the first target connection tool in the axis line direction at a wall portion constituting an accommodation space.

CROSS-REFERENCE TO RELATED APPLICATION(S)

The present application claims priority to and incorporates by reference the entire contents of Japanese Patent Application No. 2016-017709 filed in Japan on Feb. 2, 2016 and Japanese Patent Application No. 2016-128046 filed in Japan on Jun. 28, 2016.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to a connecting structure of an electromagnetic valve and a hydraulic pressure control device.

2. Description of the Related Art

Conventionally, there is known a technology involving with a hydraulic pressure control device including a hydraulic pressure circuit body that is provided with a hydraulic pressure circuit causing a hydraulic liquid of a control target to flow therethrough and an electromagnetic valve that is attached to the hydraulic pressure circuit body to adjust a flow rate of a working fluid in the hydraulic pressure circuit (refer to Japanese Patent Application Laid-open Nos. H11-008023, 2010-216552, 2002-31263, H09-306558, 2009-181709, 2006-004840, and H08-051019).

Incidentally, when the hydraulic pressure control device is mounted on a vehicle such as an automobile, various input loads act on the electromagnetic valve in a traveling state. Thus, it is desirable to keep a predetermined connecting state of the electromagnetic valve with respect to the hydraulic pressure circuit body even when the input load is applied thereto so that the accuracy of adjusting the flow rate of the working fluid is kept. Then, the hydraulic pressure control device of the related art has a room for improvement of keeping a predetermined connecting state of the electromagnetic valve with respect to the hydraulic pressure circuit body.

SUMMARY OF THE INVENTION

An object of the present invention is to provide a connecting structure of an electromagnetic valve and a hydraulic pressure control device capable of keeping a predetermined connection state of the electromagnetic valve.

In order to achieve the above mentioned object, a connecting structure of an electromagnetic valve according to one aspect of the present invention includes: a first connecting structure body that prohibits a relative movement between a hydraulic pressure circuit body and an electromagnetic valve in an axis line direction of a center axis when a cylindrical or an annular accommodation body of the electromagnetic valve capable of adjusting a flow rate of a working fluid in a hydraulic pressure circuit is inserted in the axis line direction to be accommodated into a columnar accommodation space of the hydraulic pressure circuit body including the hydraulic pressure circuit causing a working fluid of a control target to flow therethrough and the accommodation space communicating the hydraulic pressure circuit with an outside; a second connecting structure body that prohibits a relative movement between the hydraulic pressure circuit body and the electromagnetic valve in a plane orthogonal to the axis line direction when the accommodation body is accommodated in the accommodation space; a third connecting structure body that prohibits a relative rotation about the center axis between the hydraulic pressure circuit body and the electromagnetic valve when the accommodation body is accommodated in the accommodation space; and a connection body that is prohibited from moving relatively to the hydraulic pressure circuit body, wherein the first connecting structure body includes a first target connection tool that is provided at one of the accommodation body and a wall portion constituting the accommodation space, and a first connection tool that is provided at the other thereof to lock the first target connection tool in the axis line direction when the accommodation body is accommodated in the accommodation space, the second connecting structure body includes a second target connection tool that is provided at one of the accommodation body and the wall portion constituting the accommodation space, and a second connection tool that is provided at the other thereof and prohibits a relative movement of the second target connection tool in a plane orthogonal to the axis line direction when the accommodation body is accommodated in the accommodation space, and the third connecting structure body includes a third target connection tool that is provided at one of the connection body and the accommodation body, and a third connection tool that is provided at the other thereof and locks the third target connection tool when the accommodation body is accommodated in the accommodation space to prohibit a relative rotation about the center axis of the electromagnetic valve with respect to the hydraulic pressure circuit body.

In order to achieve the above mentioned object, a connecting structure of an electromagnetic valve according to another aspect of the present invention includes: at least two first connecting structure bodies that prohibit a relative movement between a hydraulic pressure circuit body and an electromagnetic valve in an axis line direction of a center axis when a cylindrical or an annular accommodation body of the electromagnetic valve capable of adjusting a flow rate of a working fluid in a hydraulic pressure circuit is inserted in the axis line direction to be accommodated into a columnar accommodation space of the hydraulic pressure circuit body including the hydraulic pressure circuit causing a working fluid of a control target to flow therethrough and the accommodation space communicating the hydraulic pressure circuit with an outside; a second connecting structure body that prohibits a relative movement between the hydraulic pressure circuit body and the electromagnetic valve in a plane orthogonal to the axis line direction when the accommodation body is accommodated in the accommodation space; at least two third connecting structure bodies that prohibit a relative rotation about the center axis between the hydraulic pressure circuit body and the electromagnetic valve when the accommodation body is accommodated in the accommodation space; and a connection body that is prohibited from moving relatively to the hydraulic pressure circuit body, wherein the first connecting structure body includes a first target connection tool that is provided at one of the accommodation body and a wall portion constituting the accommodation space, and a first connection tool that is provided at the other thereof to lock the first target connection tool in the axis line direction when the accommodation body is accommodated in the accommodation space, the second connecting structure body includes a second target connection tool that is provided at one of the accommodation body and the wall portion constituting the accommodation space, and a second connection tool that is provided at the other thereof and prohibits a relative movement of the second target connection tool in a plane orthogonal to the axis line direction when the accommodation body is accommodated in the accommodation space, and the third connecting structure body includes a third target connection tool that is provided at one of the connection body and the accommodation body, and a third connection tool that is provided at the other thereof and locks the third target connection tool when the accommodation body is accommodated in the accommodation space to prohibit a relative rotation about the center axis of the electromagnetic valve with respect to the hydraulic pressure circuit body.

According to still another aspect of the present invention, in the connecting structure of an electromagnetic valve, it is desirable that the first target connection tool is a protrusion portion that protrudes from one of the accommodation body and the wall portion constituting the accommodation space, and the first connection tool is a groove portion that guides the first target connection tool in response to an operation in which the accommodation body is accommodated into the accommodation space and locks the first target connection tool in the axis line direction after the rotation operation about the center axis in the accommodation body accommodating operation.

According to still another aspect of the present invention, in the connecting structure of an electromagnetic valve, it is desirable that the third target connection tool is a protrusion portion that protrudes from one of the connection body and the accommodation body, and the third connection tool is a locking portion that locks the third target connection tool while being pressed by the third target connection tool together with rotating operation of the accommodation body to stop the rotation operation.

According to still another aspect of the present invention, in the connecting structure of an electromagnetic valve, it is desirable that the hydraulic pressure circuit body is formed of a material having strength higher than that of the connection body.

According to still another aspect of the present invention, in the connecting structure of an electromagnetic valve, it is desirable that the connection body includes a through-hole that overlaps the accommodation space so that the accommodation body is inserted therethrough, and a holding portion that holds a conductive member electrically connecting the electromagnetic valve to a control unit controlling a driving of the electromagnetic valve, the conductive member includes a valve contact point that is exposed to the through-hole, and the electromagnetic valve includes a valve-side contact point that comes into contact with the valve contact point when the rotating operation of the accommodation body stops.

According to still another aspect of the present invention, in the connecting structure of an electromagnetic valve, it is desirable to further include that an erroneous assembly preventing mechanism that is provided between the electromagnetic valve and the hydraulic pressure circuit body or the connection body to prevent an erroneous assembly of the electromagnetic valve, wherein the erroneous assembly preventing mechanism includes a first engagement portion and a second engagement portion that are formed and arranged to engage with each other when the electromagnetic valve is assembled to a normal assembly position, the first engagement portion is provided at one of the electromagnetic valve and the hydraulic pressure circuit body or the connection body, and the second engagement portion is provided at the other of the electromagnetic valve and the hydraulic pressure circuit body or the connection body.

In order to achieve the above mentioned object, a hydraulic pressure control device according to still another aspect of the present invention includes: a hydraulic pressure circuit body that includes a hydraulic pressure circuit causing a working fluid of a control target to flow therethrough, and a columnar accommodation space communicating the hydraulic pressure circuit with an outside; a control unit that controls a flow rate of the working fluid in the hydraulic pressure circuit; an electromagnetic valve that is connected to the hydraulic pressure circuit body while a cylindrical or an annular accommodation body is inserted in an axis line direction of a center axis to be accommodated into the accommodation space and is controlled by the control unit to be driven so that the flow rate of the working fluid in the hydraulic pressure circuit is adjusted; a connection body that is prohibited from moving relatively to the hydraulic pressure circuit body; a first connecting structure body that prohibits a relative movement between the hydraulic pressure circuit body and the electromagnetic valve in the axis line direction when the accommodation body is accommodated in the accommodation space; a second connecting structure body that prohibits a relative movement between the hydraulic pressure circuit body and the electromagnetic valve in a plane orthogonal to the axis line direction when the accommodation body is accommodated in the accommodation space; and a third connecting structure body that prohibits a relative rotation about the center axis between the hydraulic pressure circuit body and the electromagnetic valve when the accommodation body is accommodated in the accommodation space, wherein the first connecting structure body includes a first target connection tool that is provided at one of the accommodation body and a wall portion constituting the accommodation space, and a first connection tool that is provided at the other thereof to lock the first target connection tool in the axis line direction when the accommodation body is accommodated in the accommodation space, the second connecting structure body includes a second target connection tool that is provided at one of the accommodation body and the wall portion constituting the accommodation space, and a second connection tool that is provided at the other thereof and prohibits a relative movement of the second target connection tool in a plane orthogonal to the axis line direction when the accommodation body is accommodated in the accommodation space, and the third connecting structure body includes a third target connection tool that is provided at one of the connection body and the accommodation body, and a third connection tool that is provided at the other thereof and locks the third target connection tool when the accommodation body is accommodated in the accommodation space to prohibit a relative rotation about the center axis of the electromagnetic valve with respect to the hydraulic pressure circuit body.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

Hereinafter, an embodiment of a connecting structure of an electromagnetic valve and a hydraulic pressure control device according to the present invention will be described in detail with reference to the drawings. Further, the present invention is not limited to the embodiment.

Embodiment

An embodiment of a connecting structure of an electromagnetic valve and a hydraulic pressure control device according to the present invention will be described with reference toFIGS. 1 to 15.

A hydraulic pressure control device according to the embodiment is used to control an operation of a control target by adjusting a flow rate of a working fluid sent to the control target to change a hydraulic pressure of the working fluid. The hydraulic pressure control device includes a hydraulic pressure circuit body that causes a working fluid fed from a pump or the like to flow therethrough and at least one electromagnetic valve that adjusts a flow rate of the working fluid. The hydraulic pressure circuit body is provided with a hydraulic pressure circuit serving as a working fluid flow passage. The electromagnetic valve adjusts the flow rate of the working fluid in the hydraulic pressure circuit.

Here, the control target may be any control target which is operated by utilizing the hydraulic pressure of the working fluid. Then, the working fluid may be any working fluid which is used to operate the control target. In the embodiment, an automatic transmission which is mounted on a vehicle such as an automobile is exemplified as the control target. For this reason, an automatic transmission fluid (ATF) which is used to operate and lubricate the automatic transmission is used as the working fluid. Here, in the description below, a description will be made on the assumption that the control target is the automatic transmission. Further, in the description below, a description will be made on the assumption that the working fluid is the automatic transmission fluid and the hydraulic pressure is an oil pressure.

Reference Numeral1ofFIGS. 1 and 2indicates an oil pressure control device (a hydraulic pressure control device) of the embodiment. The oil pressure control device1includes an oil pressure circuit body (a hydraulic pressure circuit body)10, an electromagnetic valve20, and a control unit30. The oil pressure control device1of the drawing corresponds to a part of the oil pressure circuit body10.

The oil pressure circuit body10is a so-called valve body. The oil pressure circuit body10has a configuration in which an oil pressure circuit (a hydraulic pressure circuit)12causing a working fluid for an automatic transmission (not illustrated) to flow therethrough is formed inside a main body11(FIGS. 3 to 5). The oil pressure circuit12includes a main passage (not illustrated) which forms a flow passage of the working fluid between a pump side of the automatic transmission and a control mechanism side (for example, a brake or a clutch), and a flow rate adjustment passage12awhich communicates with the main passage in the course of the main passage.

The main passage connects an inlet for the working fluid pressure-fed from the pump to an outlet for discharging the working fluid toward the control mechanism. The main passage is provided with various flow passages corresponding to gear shift stages of the automatic transmission. The flow rate adjustment passage12ais a columnar passage through which a valve body22of the electromagnetic valve20to be described later moves in a reciprocating manner and is provided for each valve body22. The valve body22adjusts the flow rate of the working fluid at the main passage in response to the position of the flow rate adjustment passage12a.

The oil pressure circuit body10is provided with a columnar accommodation space13which communicates the oil pressure circuit12with the outside. The accommodation space13is disposed to be coaxial to the flow rate adjustment passage12aand communicates with the flow rate adjustment passage12a. The accommodation space13is a space which accommodates an accommodation body23of the electromagnetic valve20to be described later and is formed to have an outer diameter larger than that of the flow rate adjustment passage12a. For this reason, the oil pressure circuit body10is provided with an annular bottom portion13aof the accommodation space13(FIGS. 4 and 5). An annular front end face23a(FIGS. 6 and 7) of the accommodation body23comes into contact with the bottom portion13awhen the accommodation body23is accommodated in the accommodation space13.

The electromagnetic valve20includes a main body21which accommodates a driving mechanism such as a coil or a return spring, and the valve body22which is moved in a reciprocating manner in the axis line direction by the driving mechanism (FIGS. 3, 6, and 7). The valve body22of the drawing is formed in a columnar shape for the convenience of description, but the shape is not particularly limited. For example, the valve body22is prepared in response to the shape of the oil pressure circuit12and may be a spool-shaped member (a so-called spool valve) in which columns having different outer diameters are concentrically combined with each other. The valve body22is disposed concentrically with respect to the flow rate adjustment passage12aand moves in a reciprocating manner inside the flow rate adjustment passage12aalong the center axis thereof.

The electromagnetic valve20is provided with the cylindrical or annular accommodation body23which is disposed to be concentric with the valve body22. The accommodation body23is inserted into the accommodation space13of the oil pressure circuit body10in the axis line direction of the center axis to be accommodated therein. The electromagnetic valve20is connected to the oil pressure circuit body10in the accommodation state. In the electromagnetic valve20, the accommodation body23is connected to the main body21, and the valve body22protrudes from the accommodation body23to be movable in a reciprocating manner. As the accommodation body23of this example, first and second accommodation bodies23A and23B having different outer diameters are concentrically provided (FIGS. 6 and 7). Further, the first accommodation body23A includes two cylindrical or annular members having different outer diameters in the drawing. However, it is assumed that only one cylindrical or annular member is used for the convenience of description. The second accommodation body23B has an outer diameter lager than that of the first accommodation body23A and is disposed near the main body21.

Further, the electromagnetic valve20is provided with a terminal24which is electrically connected to the driving mechanism. The terminal24is obtained by bending a plate-shaped base member formed of a conductive material such as metal in order to have a repulsive force and is deflected when a load is applied to a valve-side contact point24ato be described later.

The control unit30is an electronic control unit (ECU) which is charge of a control operation of the oil pressure control device1and controls the flow rate of the working fluid in the oil pressure circuit12by controlling the driving of the electromagnetic valve20. The control unit30transmits an instruction to the electromagnetic valve20corresponding to a control target in response to a target gear shift stage of the automatic transmission and controls the driving of the electromagnetic valve20so that the electromagnetic valve is opened or closed.

The oil pressure control device1is provided with a conductive member40which electrically connects the electromagnetic valve20and the control unit30to each other (FIGS. 2 and 8). The conductive member40has a function of a terminal (hereinafter, referred to as a “valve terminal”) electrically connected to the electromagnetic valve20and a function of a terminal (hereinafter, referred to as an “ECU terminal”) electrically connected to the control unit30. In the conductive member40, a combination of the valve terminal and the ECU terminal is provided for each electromagnetic valve20. The valve terminal and the ECU terminal are electrically connected to each other in each combination. For example, the conductive member40is formed as a flexible printed circuit (FPC) in which a thin film of a conductive material is formed on an insulation film or a plate-shaped busbar which is formed of a conductive material such as metal. Here, the conductive member40is exemplified as the flexible printed circuit. The conductive member40is provided with a valve terminal contact point (hereinafter, referred to as a “valve contact point”)41(FIGS. 8 and 9) electrically connected to the electromagnetic valve20and an ECU terminal contact point (an ECU contact point) electrically connected to the control unit30although not illustrated in the drawings. Further, the electromagnetic valve20is provided with the contact point (hereinafter, referred to as a “valve-side contact point”)24awhich comes into contact with the valve contact point41so that the driving mechanism of the electromagnetic valve20is electrically connected to the valve contact point41(FIGS. 6 and 7). The valve-side contact point24ais formed to protrude from the terminal24of the electromagnetic valve20.

The oil pressure control device1is provided with a connecting structure which keeps a predetermined connection state of the electromagnetic valve20with respect to the oil pressure circuit body10according to a design. The oil pressure control device1is provided with a connection body50which serves as a part of the connecting structure and is connected to the accommodation body23of the electromagnetic valve20(FIGS. 1 to 3). The connection body50is disposed so as not to move relatively to the oil pressure circuit body10. For example, the connection body50is fixed to the oil pressure circuit body10through a fixing tool (not illustrated) such as a bolt. The connection body50is nipped between the electromagnetic valve20and the oil pressure circuit body10and is connected to the accommodation body23when the accommodation body23of the electromagnetic valve20is accommodated in the accommodation space13of the oil pressure circuit body10. Without such a fixing tool, the connection body50may be configured to be prohibited from moving relatively to the oil pressure circuit body10while being nipped between the oil pressure circuit body10and the electromagnetic valve20when the electromagnetic valve20is completely connected to the oil pressure circuit body10.

The connection body50is attached to the outer wall side of the oil pressure circuit body10and includes a through-hole51which overlaps the accommodation space13so that the accommodation body23is inserted therethrough (FIG. 3). The accommodation body23of the electromagnetic valve20is inserted into the accommodation space13through the through-hole51. As will be described later, the accommodation body23of this example is provided with a first target connection tool61and a third target connection tool81which protrude outward in the radial direction. For this reason, the through-hole51is formed in a shape avoiding the first target connection tool61and the third target connection tool81so that the first target connection tool61and the third target connection tool81are not caught by the accommodation body23when the accommodation body is inserted therethrough. For example, in order to determine the shape in this example, the through-hole51is provided with a insertion portion51athrough which the third target connection tool81can be inserted in accordance with the shape of the third target connection tool81protruding outward to maximum (FIG. 2). The shape of the insertion portion51ais similar to, for example, the shape of the third target connection tool81when viewed from the insertion direction. However, if the insertion portion is formed to be larger than the projection area of the third target connection tool81when viewed from the insertion direction, the insertion portion can be also used as a guide portion that guides the insertion of the accommodation body23.

Incidentally, the connection body50may be provided as a component that just physically connects the electromagnetic valve20and the oil pressure circuit body10to each other or may have the other functions. In the former case, the connection body50may be individually provided for each electromagnetic valve20or may include a plurality of the through-holes51respectively corresponding to a plurality of the electromagnetic valves20. Then, the connection body50in this case may be integrally molded with the oil pressure circuit body10. Meanwhile, in the latter case, the connection body50may has an electrical connection function between the electromagnetic valve20and the control unit30other than a physical connection function between the electromagnetic valve20and the oil pressure circuit body10, for example, in such a manner that a main body portion including a plurality of through-holes51respectively corresponding to a plurality of the electromagnetic valves20is molded and the conductive member40is held by the main body portion. The connection body50of the embodiment corresponds to the latter example.

The connection body50of the embodiment includes a first connection body50A and a second connection body50B (FIGS. 1 to 3) and the first connection body50A corresponding to a main body portion has a function of connecting the electromagnetic valve20and the oil pressure circuit body10to each other. Furthermore, the conductive member40is held by the first connection body50A and the second connection body50B of the connection body50. For this reason, the first connection body50A and the second connection body50B are molded from an insulation material such as a synthetic resin material. The first connection body50A is provided with a holding portion (hereinafter, referred to as a “first holding portion”) which holds the valve contact point41of the conductive member40. The second connection body50B is provided with a holding portion (hereinafter, referred to as a “second holding portion”) which holds the ECU contact point of the conductive member40. The first connection body50A is obtained by integrating a plate-shaped base portion50A1and a plate-shaped main portion50A2in an overlapping state and the valve contact point41of the conductive member40is nipped between the base portion50A1and the main portion50A2. In the first connection body50A, the through-hole51is formed by the through-holes of the base portion50A1and the main portion50A2and the valve contact point41is exposed to the through-hole51(FIGS. 8 and 9). The second connection body50B is obtained by integrating a plate-shaped base portion50B1and a plate-shaped main portion50B2in an overlapping state and the ECU contact point of the conductive member40is nipped between the base portion50B1and the main portion50B2.

Here, in the oil pressure control device1, the valve contact point41of the conductive member40is nipped between the oil pressure circuit body10and the valve-side contact point24aof the electromagnetic valve20after the connection between the oil pressure circuit body10and the electromagnetic valve20is completed (FIG. 10). Then, the valve-side contact point24aand the valve contact point41are disposed to come into contact with each other when the rotation operation of the electromagnetic valve20stops (that is, the valve-side contact point and the valve contact point are electrically connected to each other when the electromagnetic valve20is completely connected to the oil pressure circuit body10). Accordingly, there is no need to perform a separate electrical connection operation between the electromagnetic valve20and the conductive member40of the oil pressure control device1. Further, in the oil pressure control device1, the valve-side contact point24aslides along the valve contact point41together with the rotation operation so that a contact portion between the valve-side contact point24aand the valve contact point41is wiped. Accordingly, an oxide coating formed on the contact portion can be removed. Then, in the oil pressure control device1, the contact portion is disposed at the opposite side to the flow rate adjustment passage12a. For this reason, it is possible to suppress a removed oxide coating from intruding into the flow rate adjustment passage12aand to suppress a contamination inside the working fluid. Further, in the drawing, for the convenience of description, the inner shapes of the oil pressure circuit body10and the electromagnetic valve20are omitted.

In this way, a member obtained by integrating the conductive member40and the connection body50in the oil pressure control device1serves as a connector module that electrically connects the electromagnetic valve20and the control unit30to each other. Here, the main portion50B2of the second connection body50B of this example is provided with an ECU holding portion52which holds the control unit30(FIGS. 1 and 2). For this reason, in the oil pressure control device1, the control unit30and the conductive member40may be connected to the connection body50to be integrated therewith. Accordingly, the integrated member may be used as a module.

The connecting structure of the electromagnetic valve20includes a first connecting structure body60, a second connecting structure body70, and a third connecting structure body80using the connection body50(FIG. 3). Each of the first to third connecting structure bodies60,70, and80may be provided at one position. In the embodiment, as will be described later, each of the first connecting structure body60and the third connecting structure body80is provided at two positions and the second connecting structure body70is provided at one position.

The first connecting structure body60is used to prohibit the relative movement between the oil pressure circuit body10and the electromagnetic valve20in the axis line direction when the accommodation body23of the electromagnetic valve20is accommodated in the accommodation space13of the oil pressure circuit body10.

The first connecting structure body60includes the first target connection tool61(FIGS. 6 and 7) which is provided at one of the accommodation body23and a wall portion (an inner peripheral wall portion13b) constituting the accommodation space13and a first connection tool62(FIGS. 4 and 5) which is provided at the other thereof and locks the first target connection tool61in the axis line direction (the axis line direction of the accommodation space13or the accommodation body23) when the accommodation body23is accommodated in the accommodation space13.

Specifically, the first target connection tool61is a protrusion portion that protrudes from one of the accommodation body23and the wall portion constituting the accommodation space13. When the first target connection tool61is provided at the accommodation space13, the first target connection tool61partially protrudes inward in the radial direction from, for example, the wall portion (the inner peripheral wall portion13b) of the accommodation space13. On the contrary, when the first target connection tool61is provided at the accommodation body23, the first target connection tool61partially protrudes outward in the radial direction from, for example, the outer peripheral wall portion of the accommodation body23.

Here, in a case where the electromagnetic valve20is attached to the oil pressure circuit body10, the accommodation body23is inserted into the accommodation space13in the axis line direction of the center axis (the center axis of the accommodation body23). After the front end face23aof the accommodation body23comes into contact with the bottom portion13aof the accommodation space13, the entire accommodation body is rotated about the center axis. For this reason, the first connection tool62is formed as a groove portion that guides the first target connection tool61in response to an operation in which the accommodation body23is accommodated into the accommodation space13and locks the first target connection tool61in the axis line direction (the axis line direction of the accommodation space13or the accommodation body23) after the rotation operation about the center axis (the center axis of the accommodation body23) in the accommodation operation of the accommodation body23. In a case where the first connection tool62is provided at the accommodation space13, for example, a part of the wall portion (the inner peripheral wall portion13b) of the accommodation space13is formed in a groove shape that is recessed outward in the radial direction. On the contrary, in a case where the first connection tool62is provided at the accommodation body23, the first connection tool62is formed in, for example, a groove shape in which a part of the outer peripheral wall portion of the accommodation body23is recessed inward in the radial direction.

Specifically, the first connection tool62includes an axis-line-direction groove portion62A. The axis-line-direction groove portion62A is a groove that guides the first target connection tool61when the accommodation body23is inserted into the accommodation space13in the axis line direction. The axis-line-direction groove portion62A extends in the axis line direction from the outer wall face of the oil pressure circuit body10to the bottom portion13aof the accommodation space13. For example, the axis-line-direction groove portion62A has a shape similar to the shape of the first target connection tool61when viewed from the insertion direction. However, when the axis-line-direction groove portion62A is formed to have a circumferential projection area larger than that of the first target connection tool61when viewed from the insertion direction, the axis-line-direction groove portion62A also serves as a guide portion that guides the insertion of the accommodation body23with respect to the accommodation space13. Further, the first connection tool62includes a circumferential groove portion62B. The circumferential groove portion62B is a groove that guides the first target connection tool61when the accommodation body23is rotated about the center axis inside the accommodation space13. The circumferential groove portion62B extends in the circumferential direction from the bottom portion13aof the axis-line-direction groove portion62A. The circumferential groove portion62B includes a first side wall62B1which is flush with the bottom portion13aand a second side wall62B2which faces the first side wall62B1in the axis line direction (FIG. 11). Further, in the drawing, for the convenience of description, the inner shapes of the oil pressure circuit body10and the electromagnetic valve20are omitted.

It is desirable that a gap between the first side wall62B1and the second side wall62B2be substantially equal to the length of the first target connection tool61in the axis line direction within a range in which the rotation operation of the electromagnetic valve20is not disturbed. Accordingly, the movement of the first target connection tool61in the axis line direction is regulated by the first side wall62B1and the second side wall62B2. In the oil pressure control device1, since the first connecting structure body60is provided in at least one position, the relative movement between the oil pressure circuit body10and the electromagnetic valve20in the axis line direction can be prohibited. Further, when the first connecting structure body60is provided in at least two positions, the relative movement prohibiting effect can be further improved. For example, in this example, the first connecting structure body60is provided at two positions at the substantially same interval about the axis line (about the center axis). Thus, in the oil pressure control device1, the movement between the oil pressure circuit body10and the electromagnetic valve20in the axis line direction is uniformly regulated. Accordingly, the relative movement between the oil pressure circuit body10and the electromagnetic valve20in the axis line direction can be further appropriately prohibited.

Next, the second connecting structure body70is used to prohibit the relative movement between the oil pressure circuit body10and the electromagnetic valve20in a plane orthogonal to the axis line direction when the accommodation body23of the electromagnetic valve20is accommodated in the accommodation space13of the oil pressure circuit body10. The relative movement to be prohibited indicates the relative movement in a direction orthogonal to the axis line direction.

The second connecting structure body70includes a second target connection tool71(FIGS. 3, 6, and 7) which is provided at one of the accommodation body23and the wall portion (the inner peripheral wall portion13b) constituting the accommodation space13and a second connection tool72(FIGS. 3 to 5) which is provided at the other thereof and prohibits the relative movement of the second target connection tool71in a plane orthogonal to the axis line direction (the axis line direction of the accommodation space13or the accommodation body23) when the accommodation body23is accommodated in the accommodation space13.

For example, in this example, an outer peripheral wall portion23bof the first accommodation body23A is used as the second target connection tool71and the inner peripheral wall portion13bof the accommodation space13is used as the second connection tool72. In the second connecting structure body70in this case, the relative movement between the accommodation body23and the accommodation space13in a direction orthogonal to the axis line direction is prohibited in such a manner that the outer peripheral wall portion23b(the second target connection tool71) and the inner peripheral wall portion13b(the second connection tool72) are formed to have the same outer diameter and are fitted to each other while the rattling thereof is suppressed. Accordingly, the second connecting structure body70can prohibit the relative movement between the oil pressure circuit body10and the electromagnetic valve20in a direction orthogonal to the axis line direction.

Here, since the first connecting structure body60is disposed at a plurality of positions about the axis line (about the center axis) at the same interval in the oil pressure control device1, the first target connection tool61may be configured to have the function of the second target connection tool71and the first connection tool62may have the function of the second connection tool72. In this case, at least two pairs of the first target connection tool61and the first connection tool62are disposed to face each other in the radial direction (the radial direction of the accommodation space13or the accommodation body23) and the first target connection tool61and the first connection tool62are formed to be fitted to each other while the rattling thereof is suppressed. Accordingly, the relative movement between the accommodation body23and the accommodation space13in a direction orthogonal to the axis line direction is prohibited.

In order to realize such a configuration, the first target connection tool61and the first connection tool62are formed to be fitted to each other, for example, while the rattling thereof in the axis line direction is suppressed. For example, as described above, a gap between the first side wall62B1and the second side wall62B2is formed to be substantially equal to the length of the first target connection tool61in the axis line direction within a range in which the rotation operation of the electromagnetic valve20is not disturbed. Then, two pairs facing each other in the radial direction are formed to be fitted to each other while the rattling thereof in the radial direction between the accommodation body23and the accommodation space13is suppressed by the first target connection tool61and the first connection tool62of both combinations. For example, two pairs of the first target connection tool61and the first connection tool62are formed to come into contact with each other within a range in which the insertion operation and the rotation operation of the accommodation body23are not disturbed at a position where an outer radial wall portion61aof the first target connection tool61and an outer radial wall portion (a bottom wall)62B3of the circumferential groove portion62B are completely connected to each other (FIG. 11). That is, in this case, the accommodation space13and the accommodation body23can be fitted to each other in the radial direction by two pairs of the wall portion61aof the first target connection tool61and the bottom wall62B3of the circumferential groove portion62B. Accordingly, the relative movement between the oil pressure circuit body10and the electromagnetic valve20in a direction orthogonal to the axis line direction can be prohibited.

Next, the third connecting structure body80is used to prohibit the relative rotation between the oil pressure circuit body10and the electromagnetic valve20about the center axis (the center axis of the accommodation space13or the accommodation body23) when the accommodation body23of the electromagnetic valve20is accommodated in the accommodation space13of the oil pressure circuit body10.

The third connecting structure body80includes a third target connection tool81(FIGS. 6 and 7) which is provided at one of the connection body50and the accommodation body23and a third connection tool82(FIGS. 8 and 9) which is provided at the other thereof and locks the third target connection tool81when the accommodation body23is accommodated in the accommodation space13to prohibit the relative rotation of the electromagnetic valve20about the center axis with respect to the oil pressure circuit body10.

Specifically, the third target connection tool81is a protrusion portion that protrudes from one of the connection body50and the accommodation body23. When the third target connection tool81is provided at the connection body50, the third target connection tool81protrudes inward in the radial direction from, for example, the wall portion (the inner wall portion) constituting the through-hole51of the connection body50. On the contrary, when the third target connection tool81is provided at the accommodation body23, the third target connection tool81protrudes outward in the radial direction from, for example, the outer peripheral wall portion of the accommodation body23.

Meanwhile, the third connection tool82is a locking portion which locks the third target connection tool81while being pressed by the third target connection tool81together with the above-described rotation operation of the accommodation body23to stop the rotation operation. When the third connection tool82is provided at the connection body50, the third connection tool82protrudes inward in the radial direction from, for example, the wall portion (the inner wall portion) of the through-hole51. On the contrary, when the third connection tool82is provided at the accommodation body23, the third connection tool82protrudes outward in the radial direction from, for example, the outer peripheral wall portion of the accommodation body23. Specifically, the third connection tool82includes a claw portion82aover which the third target connection tool81gets while moving in a pressed state together with the rotation operation of the accommodation body23and a connection portion82bthat connects the claw portion82ato any one of the connection body50and the accommodation body23. It is desirable that the connection portion82bhave flexibility so that a pressing force is applied to the third target connection tool81when the third target connection tool81gets over the claw portion82awhile pressing the claw portion.

Since the third connecting structure body80is provided in at least one position of the oil pressure control device1, the rotation operation in a direction opposite to the rotation operation of the accommodation body23with respect to the connection body50(the rotation operation when the electromagnetic valve20is attached to the oil pressure circuit body10) is regulated. Then, in the oil pressure control device1, the connection body50is fixed to the oil pressure circuit body10as described above. Thus, in the oil pressure control device1, the relative rotation about the axis between the oil pressure circuit body10and the electromagnetic valve20can be prohibited. Here, when the third connecting structure body80is provided in at least two positions, the relative rotation prohibiting effect can be improved. For example, in this example, the third connecting structure body80is provided at two positions about the axis at the same interval. Thus, in the oil pressure control device1, the relative rotation about the axis between the oil pressure circuit body10and the electromagnetic valve20can be prohibited.

Here, in each of the third connecting structure bodies80, the third target connection tool81and the third connection tool82may be formed so that a pressing force is applied between the third target connection tool81and the third connection tool82in the radial direction. Accordingly, the third connecting structure body80can regulate the relative movement between the accommodation body23and the connection body50in the axis line direction of the center axis (the center axis of the accommodation space13or the accommodation body23). That is, since the third connecting structure body80has the above-described configuration, the third connecting structure body80can also has the function of the second connecting structure body70. Accordingly, in the oil pressure control device1, the relative movement between the oil pressure circuit body10and the electromagnetic valve20in a plane orthogonal to the axis line direction can be also prohibited. The function of the second connecting structure body70of the third connecting structure body80may be used together with the above-described configuration of the second connecting structure body70or may be used instead of the configuration of the second connecting structure body70.

In this example, the first accommodation body23A is provided with the first target connection tool61and the inner peripheral wall portion13bof the accommodation space13is provided with the first connection tool62. Then, in this example, the second accommodation body23B is provided with the third target connection tool81and the connection body50is provided with the third connection tool82.

In a case where the oil pressure circuit body10and the electromagnetic valve20of the oil pressure control device1are connected to each other, the first target connection tool61protruding from the first accommodation body23A is guided in the axis line direction along the axis-line-direction groove portion62A of the oil pressure circuit body10(FIG. 12) and then the third target connection tool81protruding from the second accommodation body23B is inserted into the through-hole51of the connection body50(FIG. 13), in accordance with an operation in which the accommodation body23of the electromagnetic valve20is accommodated into the accommodation space13of the oil pressure circuit body10. At this time, since the outer peripheral wall portion23b(the second target connection tool71) and the inner peripheral wall portion13b(the second connection tool72) are fitted to each other by the second connecting structure body70, the relative movement between the oil pressure circuit body10and the electromagnetic valve20in a plane orthogonal to the axis line direction is prohibited. Meanwhile, at this time, the relative movement between the first target connection tool61and the first connection tool62of the first connecting structure body60in the axis line direction is not regulated and the third target connection tool81and the third connection tool82of the third connecting structure body80do not engage with each other. In the drawings, for the convenience of description, the inner shape of the electromagnetic valve20is omitted.

Next, the electromagnetic valve20in the oil pressure control device1is rotated about the axis. In the oil pressure control device1, the first target connection tool61is guided along the circumferential groove portion62B of the oil pressure circuit body10(FIG. 14) and the third target connection tool81gets over the claw portion82aof the third connection tool82of the connection body50to be locked to the claw portion82a(FIG. 15) together with the rotation operation of the electromagnetic valve20. In the oil pressure control device1, the rotation of the electromagnetic valve20about the axis is suppressed and the connection between the oil pressure circuit body10and the electromagnetic valve20is completed together with the operation in which the third target connection tool81gets over the claw portion82a. In the second connecting structure body70, the outer peripheral wall portion23b(the second target connection tool71) is fitted to the inner peripheral wall portion13b(the second connection tool72) from the timing of rotating the electromagnetic valve20. For this reason, in the oil pressure control device1, the relative movement between the oil pressure circuit body10and the electromagnetic valve20in a plane orthogonal to the axis line direction is prohibited after the connection of the electromagnetic valve20is completed. Further, in the oil pressure control device1, since the relative movement between the first target connection tool61and the first connection tool62in the axis line direction is regulated after the connection of the electromagnetic valve20is completed, the relative movement between the oil pressure circuit body10and the electromagnetic valve20in the axis line direction is prohibited. Further, in the oil pressure control device1, since the third target connection tool81and the third connection tool82engage with each other to regulate the rotation in a direction opposite to the rotation in the connection operation of the electromagnetic valve20after the connection of the electromagnetic valve20is completed, the relative rotation about the axis between the oil pressure circuit body10and the electromagnetic valve20is prohibited. In the drawings, for the convenience of description, the inner shape of the electromagnetic valve20is omitted.

As described above, in the connecting structure of the electromagnetic valve20and the hydraulic pressure control device (the oil pressure control device1) of the embodiment, the first connecting structure body60and the second connecting structure body70provided between the hydraulic pressure circuit body (the oil pressure circuit body10) and the electromagnetic valve20are in charge of the relative movement other than the relative rotation about the axis between the hydraulic pressure circuit body (the oil pressure circuit body10) and the electromagnetic valve20and the third connecting structure body80provided between the electromagnetic valve20and the connection body50is in charge of the relative rotation about the axis. Thus, the connecting structure of the electromagnetic valve20and the hydraulic pressure control device (the oil pressure control device1) can prohibit the relative movement (including the relative rotation) between the hydraulic pressure circuit body (the oil pressure circuit body10) and the electromagnetic valve20in all directions without using a fixing tool such as a bolt. Then, the connecting structure of the electromagnetic valve20and the hydraulic pressure control device (the oil pressure control device1) can keep a predetermined connection strength between the hydraulic pressure circuit body (the oil pressure circuit body10) and the electromagnetic valve20even when an input load is applied thereto from the outside in the traveling state by a simple configuration that does not need such a fixing tool. For this reason, the connecting structure of the electromagnetic valve20and the hydraulic pressure control device (the oil pressure control device1) can keep a predetermined connection state of the electromagnetic valve20with respect to the hydraulic pressure circuit body (the oil pressure circuit body10) with a simple configuration.

Further, since the connecting structure of the electromagnetic valve20and the hydraulic pressure control device (the oil pressure control device1) have a small configuration involving with the connection between the hydraulic pressure circuit body (the oil pressure circuit body10) and the electromagnetic valve20compared with the related art that requires a fixing tool, the positional accuracy between the hydraulic pressure circuit body (the oil pressure circuit body10) and the electromagnetic valve20can be improved after the connection therebetween is completed. For this reason, since the connecting structure of the electromagnetic valve20and the hydraulic pressure control device (the oil pressure control device1) can suppress a difference in hydraulic pressure caused by the positional deviation between the hydraulic pressure circuit body (the oil pressure circuit body10) and the electromagnetic valve20, the accuracy of controlling the control target can be improved.

Further, since the connecting structure of the electromagnetic valve20and the hydraulic pressure control device (the oil pressure control device1) have a small configuration involving with the connection between the hydraulic pressure circuit body (the oil pressure circuit body10) and the electromagnetic valve20compared with the related art that needs a fixing tool and completes the connection therebetween only by the insertion operation and the rotation operation of the electromagnetic valve20, the attachment workability of the hydraulic pressure control device (the oil pressure control device1) can be improved. Then, in this example, the electrical connection between the valve-side contact point24aof the electromagnetic valve20and the valve contact point41of the conductive member40can be also completed in accordance with the rotation operation. For this reason, since the connecting structure of the electromagnetic valve20and the hydraulic pressure control device (the oil pressure control device1) of this example can abolish the electrical connection operation between the electromagnetic valve20and the conductive member40compared with the related art, the attachment workability of the hydraulic pressure control device (the oil pressure control device1) can be further improved. In this way, since the connecting structure of the electromagnetic valve20and the hydraulic pressure control device (the oil pressure control device1) can improve the attachment workability, a decrease in manufacturing cost of the hydraulic pressure control device (the oil pressure control device1) can be realized.

Further, since the connecting structure of the electromagnetic valve20and the hydraulic pressure control device (the oil pressure control device1) can provide a configuration involving with the connection between the hydraulic pressure circuit body (the oil pressure circuit body10) and the electromagnetic valve20in, for example, a dead space compared with the related art that needs a fixing tool, an increase in structure size of the hydraulic pressure circuit body (the oil pressure circuit body10) or the electromagnetic valve20(that is, an increase in structure size of the hydraulic pressure control device) can be suppressed. Rather, since the connecting structure of the electromagnetic valve20and the hydraulic pressure control device (the oil pressure control device1) do not need a fixing tool, a space dedicated for the fixing tool is not need and thus a decrease in structure size of the hydraulic pressure control device (the oil pressure control device1) can be realized. In this way, since the connecting structure of the electromagnetic valve20and the hydraulic pressure control device (the oil pressure control device1) can suppress an increase in structure size of the hydraulic pressure control device (the oil pressure control device1) or realize a decrease in structure size thereof, for example, the amount of a material to be used decreases. As a result, a decrease in manufacturing cost can be realized.

Incidentally, even when an input load is applied to the electromagnetic valve20from the outside in the hydraulic pressure control device (the oil pressure control device1), there is a low possibility that the direction of the input load becomes a direction in which the electromagnetic valve20rotates about the axis relatively to the hydraulic pressure circuit body (the oil pressure circuit body10). For this reason, in the hydraulic pressure control device (the oil pressure control device1), a difference in strength may be set between the hydraulic pressure circuit body (the oil pressure circuit body10) and the connection body50(particularly, the first connection body50A). For example, the hydraulic pressure circuit body (the oil pressure circuit body10) is molded from a high-strength material having strength higher than that of the connection body50(particularly, the first connection body50A). In this case, for example, the connection body50is molded from an insulation material such as a synthetic resin material and the hydraulic pressure circuit body (the oil pressure circuit body10) is molded from a metal material. That is, in the connecting structure of the electromagnetic valve20and the hydraulic pressure control device (the oil pressure control device1), the first connecting structure body60and the second connecting structure body70using the hydraulic pressure circuit body (the oil pressure circuit body10) having strength higher than that of the connection body50are in charge of the relative movement other than the relative rotation about the axis between the hydraulic pressure circuit body (the oil pressure circuit body10) and the electromagnetic valve20and the third connecting structure body80provided between the electromagnetic valve20and the connection body50having strength lower than that of the hydraulic pressure circuit body (the oil pressure circuit body10) is in charge of the relative rotation which does not occur frequently compared with the relative movement. Accordingly, the electromagnetic valve20can be strongly connected to the hydraulic pressure circuit body (the oil pressure circuit body10) by the high-strength hydraulic pressure circuit body (the oil pressure circuit body10) without using a fixing tool. Then, in the connecting structure of the electromagnetic valve20and the hydraulic pressure control device (the oil pressure control device1), since the electromagnetic valve20is strongly connected to the hydraulic pressure circuit body (the oil pressure circuit body10) by the connection body50, it is possible to reduce a load applied from the electromagnetic valve20to the connection body50when an input load is applied to the electromagnetic valve20from the outside. For this reason, the connecting structure of the electromagnetic valve20and the hydraulic pressure control device (the oil pressure control device1) can improve the durability of the connection body50and the durability of the control unit30and the conductive member40held therein. Further, in the connecting structure of the electromagnetic valve20and the hydraulic pressure control device (the oil pressure control device1), a locking mechanism formed of a synthetic resin material is not particularly provided to prohibit the relative movement other than the relative rotation between the hydraulic pressure circuit body (the oil pressure circuit body10) and the electromagnetic valve20after the connection therebetween is completed and the relative movement can be prohibited by the high-strength hydraulic pressure circuit body (the oil pressure circuit body10). Even in this regard, the durability can be improved.

Further, since the hydraulic pressure circuit body (the oil pressure circuit body10) is molded from a metal material, a dimensional tolerance can be reduced compared with the case where a synthetic resin material or the like is used. Thus, the connecting structure of the electromagnetic valve20and the hydraulic pressure control device (the oil pressure control device1) can further improve the positional accuracy between the hydraulic pressure circuit body (the oil pressure circuit body10) and the electromagnetic valve20after the connection therebetween is completed.

First Modified Example

This modified example has a configuration in which two third connecting structure bodies80provided in each electromagnetic valve20of the above-described embodiment are replaced by one third connecting structure body80. Reference Numeral2ofFIG. 16indicates an oil pressure control device which is an example of a hydraulic pressure control device of the modified example. Further, the same reference numerals will be given to the same components as those of the embodiment and the same description as that of the embodiment will be omitted for the convenience of description.

The oil pressure control device2of the modified example has a configuration in which two third connecting structure bodies80provided in each electromagnetic valve20of the oil pressure control device1of the above-described embodiment are provided as one third connecting structure body80. In the oil pressure control device2, the electromagnetic valve20similar to the embodiment is used. For this reason, the third target connection tool81is provided at two positions of the electromagnetic valve20. Meanwhile, in the oil pressure control device2, the connection body50of the oil pressure control device1of the embodiment is replaced by a connection body150and thus only one third connecting structure body80is disposed.

The connection body150of the modified example has a configuration in which the first connection body50A of the connection body50of the embodiment is replaced by a first connection body150A. Then, the first connection body150A has a configuration in which two third connection tools82provided at each through-hole51in the first connection body50A of the embodiment are provided as one third connection tool82(FIGS. 16 and 17). Accordingly, in the electromagnetic valve20, only one third target connection tool81engages with the third connection tool82. Thus, in the oil pressure control device2of the modified example, only one third connecting structure body80is provided to correspond to one electromagnetic valve20. In the oil pressure control device2, when the electromagnetic valve20is assembled similarly to the embodiment, one third target connection tool81and the third connection tool82engage with each other and thus the relative rotation about the axis between the oil pressure circuit body10and the electromagnetic valve20can be prohibited.

In this way, although the hydraulic pressure control device (the oil pressure control device2) of the modified example includes only one third connecting structure body80, the third target connection tool81and the third connection tool82constituting the third connecting structure body80can engage with each other. Accordingly, the relative rotation of the electromagnetic valve20about the axis can be prohibited similarly to the hydraulic pressure control device (the oil pressure control device1) of the above-described embodiment.

Further, since the hydraulic pressure control device (the oil pressure control device1) of the embodiment includes the plurality of third connecting structure bodies80, the design tolerance involving with the shapes or the arrangement of the third target connection tools81and the third connection tools82of all third connecting structure bodies80needs to be decreased. Here, for example, even when the third target connection tool81and the third connection tool82of one third connecting structure body80can engage with each other, there is a possibility that the third target connection tools81and the third connection tools82of the other third connecting structure bodies80cannot engage with one another. However, since the hydraulic pressure control device (the oil pressure control device2) of the modified example includes only one third connecting structure body80, the third target connection tool81and the third connection tool82can engage with each other even when the design tolerance is managed with difficulty as in the hydraulic pressure control device (the oil pressure control device1) of the embodiment. For this reason, the hydraulic pressure control device (the oil pressure control device2) of the modified example can have the third connecting structure body80which suppresses an increase in manufacturing cost compared with the hydraulic pressure control device (the oil pressure control device1) of the embodiment.

Furthermore, since the first connection body150A of the modified example has a configuration in which the third connection tools82provided in the first connection body50A of the embodiment are provided as one third connection tool82, both third target connection tools81of the electromagnetic valve20can be accommodated into the through-holes51from the insertion portions51asimilarly to the hydraulic pressure control device (the oil pressure control device1) of the embodiment. Then, in the conductive member40of the modified example, the valve contact point41is disposed to match each position of both third target connection tools81of the electromagnetic valve20similarly to the hydraulic pressure control device (the oil pressure control device1) of the embodiment. Accordingly, even when the terminal24is included in only one of the third target connection tools81, the valve-side contact point24aof the terminal24can be electrically connected to the valve contact point41. For this reason, although the hydraulic pressure control device (the oil pressure control device2) of the modified example includes only one third connecting structure body80, the electromagnetic valve20can be assembled while being shifted by 180° about the axis.

Second Modified Example

In this modified example, only one third connecting structure body80is provided in each electromagnetic valve20similarly to the hydraulic pressure control device (the oil pressure control device2) of the above-described first modified example. Here, in the modified example, the electromagnetic valve20is replaced by an electromagnetic valve120illustrated inFIGS. 18 and 19. The electromagnetic valve120used in the modified example has a configuration in which one of two third target connection tools81in the electromagnetic valve20of the embodiment or the first modified example is removed (FIG. 19). In the electromagnetic valve120, the terminal24is disposed at the inside of one third target connection tool81provided therein. Reference Numeral3ofFIG. 18indicates an oil pressure control device which is an example of a hydraulic pressure control device of the modified example. Further, the same reference numerals will be given to the same components as those of the embodiment or the first modified example and the same description as that of the embodiment or the first modified example will be omitted for the convenience of description.

The oil pressure control device3of the modified example has a configuration in which the connection body150of the oil pressure control device2of the first modified example is replaced by a connection body250and the conductive member40thereof is replaced by a conductive member140(FIGS. 18 and 20).

The connection body250of the modified example has a configuration in which the first connection body150A of the connection body150of the first modified example is replaced by a first connection body250A. Then, the first connection body250A has a configuration in which the through-hole51of each of the first connection bodies150A of the first modified example is replaced by a through-hole251.

The through-hole251is used to insert the accommodation body23of the electromagnetic valve120therethrough similarly to the through-hole51of the first modified example and is formed in a shape avoiding one third target connection tool81and two first target connection tools61of the electromagnetic valve120. For this reason, the through-hole251includes an insertion portion251athrough which the third target connection tool81can be inserted similarly to the through-hole51of the first modified example. Here, the through-hole251of the modified example includes the insertion portion251awhich is provided only at one position corresponding to the third target connection tool81of the electromagnetic valve120. Here, the accommodation body23cannot be inserted unless the position of the insertion portion251amatches the position of the third target connection tool81. The third connection tool82is disposed at the inside of the insertion portion251a. Thus, in the oil pressure control device3of the modified example, only one third connecting structure body80is provided in each electromagnetic valve120. In the oil pressure control device3, when the electromagnetic valve120is inserted into the through-hole251while the position of the insertion portion251amatches the position of the third target connection tool81and the electromagnetic valve120is rotated about the axis, the third target connection tool81and the third connection tool82engage with each other and thus the relative rotation about the axis between the oil pressure circuit body10and the electromagnetic valve120can be prohibited.

The conductive member140of the modified example is different from the conductive member40of the embodiment or the first modified example in that one of two valve contact points41provided in each electromagnetic valve20is removed. The conductive member140is formed so that the valve contact point41is disposed only at the inside of the insertion portion251a.

In this way, since the hydraulic pressure control device (the oil pressure control device3) of the modified example includes only one third connecting structure body80, the relative rotation about the axis of the electromagnetic valve120can be prohibited similarly to the hydraulic pressure control device (the oil pressure control device2) of the first modified example.

Further, since the hydraulic pressure control device (the oil pressure control device3) of the modified example includes only one third connecting structure body80, an increase in manufacturing cost necessary for the third connecting structure body80can be suppressed similarly to the hydraulic pressure control device (the oil pressure control device2) of the first modified example. Then, since the hydraulic pressure control device (the oil pressure control device3) is different from the hydraulic pressure control device (the oil pressure control device2) of the first modified example in that one of the valve contact points41is removed, a decrease in manufacturing cost can be realized in this regard.

Furthermore, since the electromagnetic valve120can be assembled only in one specific direction in accordance with the shape of the through-hole251, the hydraulic pressure control device (the oil pressure control device3) of the modified example can prevent the erroneous assembly of the electromagnetic valve120.

Third Modified Example

This modified example is used to prevent the erroneous assembly of the electromagnetic valve20. The electromagnetic valve20of the above-described embodiment or the first modified example has a configuration in which the terminal24is included in only one of two third target connection tools81. For this reason, in the hydraulic pressure control device (the oil pressure control device1) of the embodiment or the hydraulic pressure control device (the oil pressure control device2) of the first modified example, one valve contact point41is disposed at the inside of two insertion portions51aso that the valve-side contact point24aof the terminal24is electrically connected to the valve contact point41of the conductive member40even when the electromagnetic valve20is assembled while being shifted by 180° about the axis. That is, in the hydraulic pressure control device (the oil pressure control device1) of the embodiment or the hydraulic pressure control device (the oil pressure control device2) of the first modified example, the unused valve contact point41is provided at one position of each electromagnetic valve20and thus the erroneous assembly of the electromagnetic valve20is prevented. However, there is a possibility that the unused valve contact point41may cause an increase in manufacturing cost. Here, in the modified example, the erroneous assembly of the electromagnetic valve20can be prevented while an increase in manufacturing cost is suppressed. Reference Numeral4ofFIG. 21indicates an oil pressure control device which is an example of a hydraulic pressure control device of the modified example. Further, the same reference numerals will be given to the same components as those of the embodiment or the first and second modified examples and the same description as those of the embodiment or the first and second modified examples will be omitted for the convenience of description.

The oil pressure control device4of the modified example is different from the oil pressure control device1of the above-described embodiment or the oil pressure control device2of the first modified example in that the conductive member40is replaced by the conductive member140of the second modified example (FIGS. 21 and 22) and the erroneous assembly preventing mechanism of the electromagnetic valve20is provided between the electromagnetic valve20and the oil pressure circuit body10or the connection body50(150). For this reason, the valve contact point41is disposed only at one of two insertion portions51aof the through-hole51in the oil pressure control device4(FIG. 22).

Here, the erroneous assembly preventing mechanism is described on the basis of the oil pressure control device1of the embodiment. However, even when the erroneous assembly preventing mechanism is described on the basis of the oil pressure control device2of the first modified example, the same effect as that of the erroneous assembly preventing mechanism can be obtained.

The erroneous assembly preventing mechanism includes a first engagement portion and a second engagement portion which are formed and arranged to engage with each other only when the electromagnetic valve is assembled at a normal assembly position according to a design. For this reason, since the erroneous assembly preventing mechanism can prevent the erroneous assembly of the electromagnetic valve, the electromagnetic valve can be assembled only at the normal assembly position according to a design. In the oil pressure control device4of the modified example, the electromagnetic valve20, the oil pressure circuit body10, and the connection body50of the oil pressure control device1of the embodiment are appropriately replaced in response to the configurations of the first engagement portion and the second engagement portion of the erroneous assembly preventing mechanism.

For example, the first engagement portion is provided as a protrusion portion which protrudes from one of the electromagnetic valve and the oil pressure circuit body or the connection body. Then, the second engagement portion is provided as a groove portion, a notch portion, or a through-hole portion which is provided at the other thereof and into which the first engagement portion can be inserted only when the electromagnetic valve is assembled at the normal assembly position according to a design.

The first engagement portion and the second engagement portion may be provided only for the erroneous assembly preventing function or may be also provided for the other functions different from the erroneous assembly preventing function. In the description below, the latter case will be described in detail.

For example, the first connecting structure body60is provided between the electromagnetic valve and the oil pressure circuit body. Then, in the first connecting structure body60, the first target connection tool61serving as the protrusion portion and the first connection tool62serving as the groove portion are formed to engage with each other. For this reason, in the oil pressure control device4of the modified example, the first connecting structure body60is also used as the erroneous assembly preventing mechanism.

When one first connecting structure body60is provided, the first target connection tool61is caught by the oil pressure circuit body or the connection body at a position other than the normal assembly position. Accordingly, the first target connection tool61and the first connection tool62are formed and arranged so that the electromagnetic valve cannot be assembled to the oil pressure circuit body and the connection body. Accordingly, the first connecting structure body60can be also used as the erroneous assembly preventing mechanism.

Meanwhile, when the first connecting structure bodies60are disposed at the same interval about the axis similarly to the oil pressure control device1of the embodiment in the case where the first connecting structure body60is provided at a plurality of positions, all first target connection tools61can be inserted into the axis-line-direction groove portions62A of the first connection tools62at a predetermined position different from the normal assembly position even when the electromagnetic valve is rotated about the axis from the normal assembly position. For this reason, when the plurality of first connecting structure bodies60are used as the erroneous assembly preventing mechanism in the oil pressure control device4of the modified example, the plurality of first connecting structure bodies are disposed so that an angle (that is, a center angle) forming a gap (that is, a circular-arc length) about the axis of one first connecting structure body60with respect to at least one of the first connecting structure bodies60is different from an angle forming a gap about the axis of the other first connecting structure body60with respect thereto. Accordingly, since the erroneous assembly preventing mechanism can insert all first target connection tools61into the axis-line-direction groove portions62A of the first connection tools62only when the electromagnetic valve is located at one specific position (the normal assembly position) about the axis, the erroneous assembly of the electromagnetic valve can be prevented.

Specifically, the oil pressure control device4of the modified example has a configuration in which the electromagnetic valve20of the oil pressure control device1of the embodiment is replaced by an electromagnetic valve220as below (FIG. 23). The electromagnetic valve220has a configuration in which a protrusion portion serving as the first engagement portion of the erroneous assembly preventing mechanism is provided in the electromagnetic valve20of the embodiment. In the electromagnetic valve220of this example, the first target connection tools61are disposed about the axis so that one angle (a center angle) θ1forming one gap about the axis of each of the first target connection tools61is smaller than the other angle (a center angle) θ2forming the other gap. In the oil pressure control device4of the modified example, the first connection tools62are disposed to correspond to the positions of the first target connection tools61. The first connection tool62corresponds to a groove portion serving as the second engagement portion of the erroneous assembly preventing mechanism.

The first connection tool62of the modified example is provided in an oil pressure circuit body110similarly to the oil pressure control device1of the embodiment (FIG. 24). The oil pressure circuit body110has a configuration in which two first connection tools62of the oil pressure circuit body10of the embodiment are disposed differently. Here, one angle (a center angle) θa forming a gap about the axis therebetween is set to θ1and the other angle (a center angle) θb is set to θ2.

Since the oil pressure control device4of the modified example includes the first connecting structure bodies60having different center angles, the first target connection tools61are respectively inserted into the axis-line-direction groove portions62A of the first connection tools62(FIG. 25) and thus the electromagnetic valve220is correctly assembled to the oil pressure circuit body110and the connection body50when the electromagnetic valve220is assembled at the normal assembly position. Meanwhile, in the oil pressure control device4, the electromagnetic valve220is assembled to the normal assembly position while being shifted by 180°. Accordingly, even when one first target connection tool61is inserted into the axis-line-direction groove portion62A of one first connection tool62, the other first target connection tool61is caught by the wall face of the oil pressure circuit body110while not being inserted into the axis-line-direction groove portion62A of the other first connection tool62(FIG. 26) and thus the electromagnetic valve220cannot be assembled to the oil pressure circuit body110and the connection body50.

In this way, since the hydraulic pressure control device (the oil pressure control device4) of the modified example can prevent the erroneous assembly of the electromagnetic valve220, the electromagnetic valve220is assembled at the normal assembly position. Thus, the hydraulic pressure control device (the oil pressure control device4) can electrically connect the valve-side contact point24aof the terminal24to the valve contact point41at one position of the conductive member40even when only one terminal24is provided at the electromagnetic valve220. Thus, since there is no need to provide the unused valve contact point41in the hydraulic pressure control device (the oil pressure control device4), a decrease in manufacturing cost can be realized. Further, the hydraulic pressure control device (the oil pressure control device4) can electrically connect one valve-side contact point24ato the valve contact point41only at one position of the conductive member40even when the terminal24is provided at two positions of the electromagnetic valve220.

Incidentally, the oil pressure control device4of the modified example is provided with the third connecting structure body80. Then, in the third connecting structure body80, the third target connection tool81serving as the protrusion portion and the third connection tool82serving as the groove portion are formed to engage with each other. For this reason, although not illustrated in the drawings, in the oil pressure control device4of the modified example, the third connecting structure body80can be also used as the erroneous assembly preventing mechanism. In this case, when only one third connecting structure body80is provided, the third target connection tool81is caught by the oil pressure circuit body or the connection body at a position other than the normal assembly position. Accordingly, the third target connection tool81and the third connection tool82are formed and arranged so that the electromagnetic valve cannot be assembled to the oil pressure circuit body and the connection body. Meanwhile, when the third connecting structure body80is provided at a plurality of positions, the third connecting structure bodies80are disposed so that an angle (a center angle) forming a gap (a circular-arc length) about the axis of one third connecting structure body80with respect to at least one of the third connecting structure bodies80is different from an angle forming a gap about the axis of the other third connecting structure body80with respect thereto. The oil pressure control device4of the modified example can obtain the same effect as that of the above-described example even in such a configuration.

Further, in the above-described example, since two first target connection tools61and two first connection tools62are formed to have the same shape, one of a gap about the axis of two first target connection tools61and a gap about the axis of two first connection tools62becomes a narrow angle (θ1, θa) and the other thereof becomes an obtuse angle (θ2, θb). On the contrary, although not illustrated in the drawings, in the hydraulic pressure control device (the oil pressure control device4) of the modified example, one of two first target connection tools61may be formed in a different shape and one of two first connection tools62may be formed in a different shape. Thus, only when the combination of the first target connection tool61and the first connection tool62is reversed, the first target connection tool61may not be inserted into the axis-line-direction groove portion62A of the first connection tool62. In this case, two first target connection tools61may be disposed while being shifted by 180° about the axis and two first connection tools62may be disposed while being shifted by 180° about the axis. When the electromagnetic valve including two first target connection tools61having different shapes is assembled at the normal assembly position, one first target connection tool61is inserted into the axis-line-direction groove portion62A of one first connection tool62and the other first target connection tool61is inserted into the axis-line-direction groove portion62A of the other first connection tool62. Accordingly, the electromagnetic valve can be assembled correctly. On the contrary, in a case where the electromagnetic valve is assembled while being shifted by 180°, for example, when one first target connection tool61is larger than the other first target connection tool61in structure size, one first target connection tool61cannot be inserted into the axis-line-direction groove portion62A of the other first connection tool62. Accordingly, the electromagnetic valve cannot be assembled. In this way, the hydraulic pressure control device (the oil pressure control device4) of the modified example can have the same effect as that of the above-described example even when the plurality of first target connection tools61and the plurality of first connection tools62are provided to have different shapes. This idea can be also applied to a case where the erroneous assembly preventing mechanism is configured by the third connecting structure body80(the third target connection tool81and the third connection tool82).

Although not illustrated in the drawings, the erroneous assembly preventing mechanism may include the first engagement portion and the second engagement portion which are formed so that the electromagnetic valve can be inserted in the axis line direction when the electromagnetic valve is deviated from the normal assembly position about the axis and the inserted electromagnetic valve cannot be rotated about the axis. The oil pressure control device4of the modified example can obtain the same effect as that of the above-described example even in such a configuration.

Although not illustrated in the drawings, the erroneous assembly preventing mechanism may be provided only to prevent the erroneous assembly. For example, the erroneous assembly preventing mechanism includes the first engagement portion that serves as a protrusion portion protruding from the electromagnetic valve and the second engagement portion that serves as a groove portion into which the first engagement portion is inserted only when the electromagnetic valve is located at the normal assembly position, wherein the first engagement portion is formed to be caught by the oil pressure circuit body or the connection body when the electromagnetic valve is located at a position other than the normal assembly position.

The connecting structure of an electromagnetic valve and the hydraulic pressure control device according to the embodiments includes the first connecting structure body, the second connecting structure body, and the third connecting structure body as described above and thus can prohibit a relative movement between the hydraulic pressure circuit body and the electromagnetic valve in all directions without using a fixing tool such as a bolt after the connection therebetween is completed. Then, the connecting structure of an electromagnetic valve and the hydraulic pressure control device can keep a predetermined connection strength between the hydraulic pressure circuit body and the electromagnetic valve with a simple configuration that does not need such a fixing tool even when an input load is applied to the electromagnetic valve from an outside in a traveling state. For this reason, the connecting structure of an electromagnetic valve and the hydraulic pressure control device can keep a predetermined connection state of the electromagnetic valve with respect to the hydraulic pressure circuit body with a simple configuration.