JP2006342863A - Solenoid valve - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a solenoid valve capable of preventing rattling of a yoke even if vibration and shock are applied on it, reducing the number of parts to simplify structure, and reducing assembly man-hours. <P>SOLUTION: A tongue piece 75 extending from a bottom part 73A toward a basic body 100 is formed by cutting and raising the bottom part 73A in the yoke 73 constituting a coil assembly body 70 of the solenoid valve 30. A tip part of the tongue piece 75 is made to elastically abut on an end face 101 of the basic body 100. Consequently, the coil assembly body 70 is energized toward a protruding part 14 provided protrudedly in a housing 10 by utilizing elastic restoration force of the tongue piece 75. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an electromagnetic valve equipped in a vehicle brake hydraulic pressure control device.

  In general, a vehicle brake hydraulic pressure control device includes a base body on which an oil passage is formed, and an electromagnetic valve that appropriately blocks and opens the oil passage in the base body. The electromagnetic valve includes a substantially cylindrical coil assembly (coil, yoke) for moving a movable core for opening and closing a valve mechanism built in the electromagnetic valve by magnetic force, and supply of current to the coil assembly. -It is mainly composed of a housing with a control board that controls stopping and the like. As such a brake fluid pressure control device for a vehicle, a guide member (valve body) that is fixed to a housing and guides a movable core as a technique for preventing the coil assembly of an electromagnetic valve, particularly a yoke, has been hitherto known. And a spool (bobbin) in which a coil is housed are provided with a plate spring that biases the spool toward the flange of the yoke (see, for example, Patent Document 1).

Japanese Patent Laying-Open No. 2002-243056 (paragraph 0053, FIG. 3)

  By the way, in the structure of patent document 1, since the structure which provides a leaf | plate spring separately between the guide fixed to the housing and a spool is employ | adopted, the number of parts of a solenoid valve increases and the whole structure is only complicated. Or there is a problem that the number of assembly steps increases.

  Therefore, in the present invention, even when vibration, impact, etc. are applied, it is possible to prevent rattling of the yoke, reduce the number of parts, simplify the overall structure, and reduce assembly man-hours. An object is to provide a solenoid valve.

  In order to solve the above-mentioned problem, the electromagnetic valve according to the first aspect of the present invention includes a coil disposed so as to surround a valve body fixed to a base body from an outer peripheral side, and a yoke disposed outside the coil. A coil assembly comprising: a coil assembly that is supported by a mounting member that is mounted on the base body, and that extends from the yoke to the yoke and elastically deforms at least one of the base body and the mounting member. It is characterized by providing an elastic part that abuts as possible.

  According to such a configuration, since the elastic portion extending from the yoke is in contact with at least one of the base body and the mounting member so as to be elastically deformable, even if vibration, impact, or the like is applied to the electromagnetic valve, When the elastic portion is elastically deformed, the coil assembly can be biased toward the base body or the mounting member. Thereby, the rattling of the coil assembly can be absorbed by the elastic portion without using another member such as a leaf spring as described in the above prior art.

  According to a second aspect of the present invention, there is provided a solenoid valve according to a second aspect of the present invention, which is fixed to a solenoid valve mounting hole of a base on which a fluid circuit is formed, and a movable body having a movable core disposed therein, and the movable core is moved. Therefore, a coil disposed so as to surround the valve body from the periphery and a yoke having a bottom portion provided around the coil, the coil and the yoke being mounted on the base and the base The electromagnetic valve is disposed between and supported by the mounting member, and is characterized in that the yoke is provided with an elastic portion that extends from the bottom and abuts against the base body so as to be elastically deformable.

  According to such a configuration, since the elastic portion extending from the bottom of the yoke is in contact with the base body so as to be elastically deformable, the elastic portion is elastically deformed even if vibration, impact, or the like is applied to the electromagnetic valve. As a result, the yoke can be biased toward the mounting member mounted on the base, and the rattling of the yoke can be absorbed by the elastic portion without using another member such as a leaf spring as described in the prior art. can do.

  The electromagnetic valve according to the third aspect of the present invention is characterized in that the elastic portion is a tongue piece formed by cutting and raising the yoke.

  According to such a structure, the tongue piece which is an elastic part can be easily formed by cutting and raising the yoke, and the manufacturing cost of the tongue piece can be reduced.

  The electromagnetic valve of the present invention according to claim 4 is characterized in that the tip of the tongue piece is bent and the bent position or a portion closer to the tip than the bent position is brought into contact with the base body or the mounting member.

  With such a configuration, the bent portion formed at the tip of the tongue piece or the tip side of the bent portion can be elastically brought into contact with the base body or the mounting member with a large area. The durability, life, etc. of the contact part can be improved.

  The electromagnetic valve according to the fifth aspect of the present invention is characterized in that the proximal end side of the tongue piece is wider than the distal end side.

  With such a configuration, the material strength on the base end side of the tongue piece can be increased, and durability against repeated deformation of the tongue piece due to vibration, impact, etc. applied to the electromagnetic valve can be improved.

  The electromagnetic valve according to the sixth aspect of the present invention is formed by cutting a plurality of tongue pieces in a tangential direction in contact with a concentric circle centering on the axis of the yoke and facing each other across the yoke axis. It is characterized by that.

  With this configuration, a plurality of tongue pieces are arranged in a direction in contact with a concentric circle with the yoke axis as the center, and at positions facing each other across the yoke axis, so that the rattling of the yoke is stabilized without unevenness. Can be absorbed.

  The electromagnetic valve of the present invention according to claim 7 is characterized in that the tongue piece is formed by being cut and raised in the radial direction of the bottom portion.

  With such a configuration, since the tongue piece is arranged so as to extend in the radial direction of the bottom portion of the yoke, the rattling of the yoke can be stably absorbed without unevenness.

  In the electromagnetic valve according to the eighth aspect of the present invention, the yoke has a side portion that continuously extends from the outer periphery of the bottom portion in the axial direction of the coil, and the tongue piece is located at the bottom portion of the yoke at the base end side. The side includes a part of the side portion of the yoke.

  With such a configuration, the bent portion where the bottom and side portions of the yoke intersect can be used as the bent portion of the tongue piece as it is, so when the yoke is manufactured, the pressing process for forming the bent portion on the tongue piece is purposely made. It is no longer necessary to perform the above and the like, and the man-hours for manufacturing the yoke can be reduced.

  The electromagnetic valve of the present invention according to claim 9 is characterized in that a midway portion from the proximal end to the distal end of the tongue piece is curved.

  With such a configuration, the spring constant of the tongue piece can be adjusted by appropriately changing the curvature of the curved portion in the middle of the tongue piece, and the degree of freedom in designing the spring constant can be increased. In addition, by curving the intermediate part of the tongue piece, the contact area of the tongue piece can be increased, the surface pressure of the contact part can be reduced, and the durability can be enhanced.

  According to the present invention, it is possible to stably suppress the rattling of the yoke of the solenoid valve without using a separate member such as a leaf spring as described in the prior art, and to reduce the number of parts of the solenoid valve. The structure can be simplified and the number of assembling steps can be reduced.

(First embodiment)
Next, a first embodiment of the present invention will be described in detail with reference to the drawings as appropriate. In the drawings to be referred to, FIG. 1 is an exploded perspective view showing a vehicle brake hydraulic pressure control device according to the present embodiment.

  As shown in FIG. 1, the vehicle brake hydraulic pressure control device A is a base body 100 in which a hydraulic circuit (not shown) is formed, and a mounting member that is mounted on one end face 101 of the base body 100. A resin housing 10 and an electric motor 20 that is mounted on the other end face 102 of the base body 100 and drives a pump (not shown) in the base body 100 are mainly provided.

  The base body 100 is a metal part formed in a substantially rectangular parallelepiped, and eight electromagnetic valves 30 (only one) are arranged on one end face 101 in two rows and four columns and arranged at predetermined intervals. (Shown) is provided. The detailed structure of the solenoid valve 30 and the surroundings of the solenoid valve 30 will be described later.

  The housing 10 includes a first housing portion S1 (see FIG. 2) that opens toward the base body 100 side and a second housing portion S2 (see FIG. 2) that opens toward the opposite side of the base body 100. The electromagnetic valve 30 is accommodated in the accommodating portion S1. Further, the electronic control unit 12 is accommodated in the second accommodating portion S2, and the opening of the second accommodating portion S2 is closed by the lid portion 13. The housing 10 is formed in a substantially cylindrical shape, and a partition wall 11 for partitioning the internal space of the housing 10 into the first housing portion S1 and the second housing portion S2 is formed at an axially intermediate portion thereof. . A through hole 11A (see FIG. 2) is formed in the partition wall 11, and a case 41 of an electromagnetic valve 30 described later is inserted into the through hole 11A with a gap. A connection terminal 15 (see FIG. 2) made of a metal plate bent in a substantially L shape is attached to the partition wall 11, and one end side of the connection terminal 15 is embedded in the partition wall 11. Further, the partition wall 11 is provided with a plurality of protrusions 14 (only one is shown in FIG. 2) protruding from the surface of the partition wall 11 toward the yoke 73 which will be described later.

  The electronic control unit 12 is fixed to the second housing portion S2 side of the housing 10 and is electrically connected to the electromagnetic valve 30 and the electric motor 20 through a connection terminal 15 or the like embedded in the housing 10. The electromagnetic control unit 12 has a function as a control device that controls the operation of the electromagnetic valve 30 and the electric motor 20 by appropriately controlling the current supplied to the electromagnetic valve 30 and the electric motor 20 and the like. ing.

  Hereinafter, the electromagnetic valve 30 and the structure around the electromagnetic valve 30 will be described in detail with reference to FIGS. 2 and 3. In the drawings to be referred to, FIG. 2 is an enlarged cross-sectional view of a main part showing a solenoid valve and a structure around the solenoid valve.

  As shown in FIG. 2, the electromagnetic valve 30 is generally constituted by a fixed core 40, a valve body 50, a movable core 60, and a coil assembly 70 that are valve bodies.

  The fixed core 40 is formed as a stepped cylindrical body, and is fixedly attached to the electromagnetic valve mounting hole 100 </ b> A of the base body 100 in a state of being prevented from being detached via the clip 102. The fixed core 40 has a guide hole 40 </ b> A extending along the axial direction of a coil 72 described later on the inner peripheral side thereof. The fixed core 40 is provided with a cylindrical case 41 fixed on the outer peripheral side of a protruding portion protruding from the base body 100. Furthermore, oil passages 40B and 40B that open to the guide hole 40A are formed in the fixed core 40, and these oil passages 40B and 40B communicate with the hydraulic circuit formed in the base body 100.

  The valve body 50 is provided in the guide hole 40A of the fixed core 40 so as to be movable together with the movable core 60, and moves in the guide hole 40A in the direction of the axis L (vertical direction in FIG. 2) of the guide hole 40A. The valve seat 51 fixed to 40A is detached and seated. Further, the movable core 60 is provided in the case 41 so as to be movable in the vertical direction, and is in contact with the end of the valve body 50 (the upper end in FIG. 2).

  The valve body 50 is normally separated from the valve seat 51 by being biased toward the movable core 60 by a spring (not shown) provided between the valve body 50 and the valve seat 51. Thus, the bottom portion 100B of the electromagnetic valve mounting hole 100A, which is held in the valve open position (state of FIG. 2) and is opened by the hydraulic circuit, and the oil passage 40B are communicated with each other. When the coil 72 described later is excited, the movable core 60 moves downward in FIG. 2 against the urging force of the retainer and pushes the valve body 50, so that the valve body 50 is moved to the valve seat. The valve 51 is placed in a valve closing position that is seated on 51 and blocks between the bottom 100B of the solenoid valve mounting hole 100A and the oil passage 40B.

  The coil assembly 70 is formed in a cylindrical shape and is fitted around the case 41, a coil 72 wound around the outer periphery of the bobbin 71, and a coil 72. The coil assembly 70 is disposed around the coil 72. And a yoke 73 that forms a magnetic path through which the magnetic field from the coil 72 passes.

  Here, the bobbin 71 is provided with a connection terminal 74 protruding from the end 71 </ b> A toward the outside in the axial direction, and the connection terminal 74 is electrically connected to the coil 72. The connection terminal 74 is projection welded to the connection terminal 15 of the housing 10 described above. For this reason, the coil assembly 70 is supported (fixed) in a state of being suspended from the housing 10 via the connection terminals 74 before the housing 10 is mounted on the base body 100.

  The coil 72 is disposed so as to surround the axis L of the guide hole 40A of the fixed core 40 from the periphery. The coil 72 is excited or demagnetized by controlling the current supplied from the outside via the connection terminals 15 and 74 and the like, thereby moving the movable core 60 in the case 41 in the axial direction. .

  Next, the yoke 73 of the electromagnetic valve 30 will be described in detail with reference to FIG. 3A and 3B are views showing a yoke of a solenoid valve as a single unit, wherein FIG. 3A is a bottom view showing the yoke, and FIG. 3B is a partially broken side view of the yoke viewed from the direction of arrows III-III in FIG. (C) is a fragmentary perspective view which shows the bottom part side of a yoke.

  As shown in FIGS. 3A, 3B, and 3C, the yoke 73 is formed in a cylindrical shape using a metal material or the like. The yoke 73 rises upward in FIG. 2 continuously from the annular bottom 73A and the outer periphery of the bottom 73A, and is a cylindrical portion 73B that is a side portion concentrically arranged with the coil 72, and the opening of the cylindrical portion 73B. In order to close the end, it is constituted by an annular lid plate 73C (see FIG. 2) which is fixed by caulking to the opening end (the caulking portion is not shown). An insertion hole 73 </ b> D through which the fixed core 40 is inserted is formed at the center of the bottom 73 </ b> A of the yoke 73.

  Here, the bottom 73A of the yoke 73 is provided with a pair of tongue pieces 75, 75 which are elastic portions by cutting and raising the bottom 73A. The tongue 75 is formed as an elongated rectangular plate, is opposed in the radial direction across the insertion hole 73D of the bottom 73A, and is a concentric circle R centering on the axis of the yoke 73 (see FIG. 3A). ). The tongue 75 is bent and extended obliquely from a base end 75A located at the bottom 73A of the yoke 73, and the tip 75B is elastically applied to the end face 101 of the base body 100 under the axial load of the coil assembly 70. Abut. As a result, the tongue piece 75 urges the coil assembly 70 toward the partition wall 11 of the housing 10 by its elastic restoring force (elastic reaction force), and the lid portion 73 </ b> C of the yoke 73 projects from the partition wall 11. The protruding portion 14 is elastically pressed. For this reason, the yoke 73 of the coil assembly 70 is configured to be stably fixed while being sandwiched between the protrusion 14 and the tongue piece 75.

  According to the electromagnetic valve 30 according to the present embodiment configured as described above, the partition wall 11 is formed by elastically bringing the tongue piece 75 extending from the bottom 73A of the yoke 73 into contact with the end surface 101 of the base body 100. Since the yoke 73 is sandwiched between the protruding portion 14 and the tongue piece 75, even if vibration, impact, or the like is applied to the electromagnetic valve 30, the rattling 75 stabilizes the rattling of the yoke 73. Can be absorbed. For this reason, it is possible to prevent an excessive load from being applied to the welded portion between the connection terminal 15 and the connection terminal 74, to prevent the welded portion from being damaged, and to improve the performance, reliability, etc. of the solenoid valve 30. Can do.

  Therefore, according to the present embodiment, rattling of the yoke 73 of the electromagnetic valve 30 can be stably suppressed without using another member such as a leaf spring as described in the prior art. The number of parts can be reduced to simplify the overall structure, and the number of assembly steps can be reduced.

  Further, since a plurality of tongue pieces 75 are arranged in a direction in contact with the concentric circle R with the axis of the yoke 73 as the center and at positions facing each other across the axis of the yoke 73, the rattling of the yoke 73 can be stably prevented. Thus, the performance, reliability, etc. of the electromagnetic valve 30 can be reliably improved.

(Second Embodiment)
Next, a second embodiment of the present invention will be described with reference to FIG. FIG. 4 is a partially cutaway side view of the yoke of the solenoid valve according to the present embodiment as seen from the same direction as FIG.

  As shown in FIG. 4, the yoke 110 used in the present embodiment is similar to the first embodiment in that it has an annular bottom portion 110A and a cylinder that is a side portion provided continuously on the outer periphery of the bottom portion 110A. It is comprised by the part 110B and the cover plate (not shown) which obstruct | occludes the opening end of the cylindrical part 110B. The bottom 110A of the yoke 110 has a pair of tongue pieces 111 (only one shown) as elastic portions at positions opposed to each other across the insertion hole 110C by cutting the bottom 110A along the tangential direction of the concentric circle R. The tongue piece 111 is formed to bend and extend obliquely from the base end portion 111A located at the bottom portion 110A toward the end surface (not shown) of the base body.

  However, in the present embodiment, the tip portion 111B side of the tongue piece 111 is formed as a bent portion 111C bent in a letter shape toward the bottom portion 110A side of the yoke 110. Is different. The bent portion 111C of the tongue piece 111 is a contact portion that elastically contacts the end surface of the base.

  In this embodiment configured as described above, the bent portion 111C of the tongue piece 111 is elastically abutted against the end surface of the base with a larger area than the tongue piece 75 described in the first embodiment. The durability and life of the bent portion 111C of the tongue piece 111 can be improved.

(Third embodiment)
Next, a third embodiment of the present invention will be described with reference to FIG. FIG. 5 is a bottom view of the solenoid valve yoke according to the present embodiment as viewed from the same direction as FIG.

  As shown in FIG. 5, the yoke 120 used in the present embodiment is similar to the first embodiment in that the annular bottom portion 120A and a cylinder that is a side portion provided continuously on the outer periphery of the bottom portion 120A are provided. Part (not shown) and a cover plate (not shown) for closing the opening end of the cylindrical part. The bottom 120A of the yoke 120 is formed with a pair of tongue pieces 121 and 121 as elastic portions at positions facing each other with the insertion hole 120B interposed therebetween by cutting and raising the bottom 120A along the tangential direction of the concentric circle R. The tongue 121 extends obliquely from the base end 121A located at the bottom 120A toward the end surface (not shown) of the base.

  However, in the present embodiment, the tongue piece 121 is formed as an elongated substantially trapezoidal plate body, and the base end portion 121A is formed wider than the distal end portion 121B. It is different from the form.

  In this embodiment configured as described above, since the tongue piece 121 is formed in a substantially trapezoidal shape, the material strength on the base end portion 121A side of the tongue piece 121 can be increased, and vibration applied to the electromagnetic valve Further, durability against repeated deformation on the base end 121A side of the tongue piece 121 due to impact or the like can be improved. As shown in FIG. 4, the tongue piece 121 may of course be provided with a bent portion (corresponding to the bent portion 111C in FIG. 4) near the tip 121B.

(Fourth embodiment)
Next, a fourth embodiment of the present invention will be described with reference to FIG. FIG. 6 is a bottom view of the yoke of the electromagnetic valve according to the present embodiment as seen from the same direction as FIG.

  As shown in FIG. 6, the yoke 130 used in the present embodiment is similar to the first embodiment in that it has an annular bottom portion 130A and a cylinder that is a side portion provided continuously on the outer periphery of the bottom portion 130A. Part (not shown) and a cover plate (not shown) for closing the opening end of the cylindrical part. The bottom portion 130A of the yoke 130 is cut and raised to form a pair of tongue pieces 131 and 131 as elastic portions at positions facing each other with the insertion hole 130B interposed therebetween. The tongue piece 131 is formed at the bottom portion 130A. The base end portion 131A located at the end is bent obliquely and extended toward the end surface (not shown) of the base body.

  However, the tongue piece 131 used in the present embodiment is that of the first embodiment in that the middle part thereof is bent in two stages by curved portions 131B and 131C having a substantially U shape. Is different. The tongue 131 is formed by raising the bottom 130A in the tangential direction of the concentric circle R. The curved portion 131C has a tip portion 131D.

  In the present embodiment configured as described above, the spring constant of the tongue piece 131 can be adjusted by appropriately changing the curvatures of the curved portions 131B and 131C formed in the middle part of the tongue piece 131, The degree of freedom in designing the spring constant can be increased. In addition, by curving the intermediate portion of the tongue piece 131 with the curved portions 131B and 131C, the contact area of the tongue piece 131 with the end surface of the base can be increased, and the surface pressure of the contact portion is reduced to improve durability. Can be increased. In the present embodiment, the case where two tongues 131B and 131C are provided on the tongue piece 131 has been described as an example. However, instead of this, the number of corners may be increased to three or more. Of course, the tongue piece 131 may have a configuration in which the base end portion 131A is formed wider than the tip end portion 131D, as shown in FIG. Further, the tongue piece 131 may be arranged along the radial direction of the bottom portion 130A. Furthermore, the tongue piece 131 may have a configuration in which a bent portion (corresponding to the bent portion 111C in FIG. 4) is provided at a portion near the distal end portion 131D.

(Fifth embodiment)
Next, a fifth embodiment of the present invention will be described with reference to FIG. FIG. 7 is a bottom view of the yoke of the electromagnetic valve according to the present embodiment as viewed from the same direction as FIG.

  As shown in FIG. 7, the yoke 140 used in the present embodiment is similar to the first embodiment in that it has an annular bottom 140A and a cylindrical cylinder that is a side provided continuously on the outer periphery of the bottom 140A. Part (not shown) and a cover plate (not shown) for closing the opening end of the cylindrical part. Then, the bottom portion 140A of the yoke 140 is formed by cutting and raising the bottom portion 140A to form three tongue pieces 141, 141, 141 which are elastic portions. The tongue piece 141 is formed in the insertion hole 140B of the bottom portion 140A. The base end portion 141A located at the peripheral edge is bent and extended obliquely toward the end surface (not shown) of the base body, and the front end portion 141B is in elastic contact with the end surface of the base body. Here, each tongue piece 141 extends radially in the radial direction of the bottom portion 140A, and is disposed at substantially equal intervals in the circumferential direction. Further, the tongue piece 141 has a base end portion 141A wider than the tip end portion 141B as in the third embodiment.

  Also in the present embodiment configured as above, each tongue piece 141 is arranged so as to extend radially toward the radial direction of the bottom portion 140A of the yoke 140, so that the rattling of the yoke 140 is stabilized without unevenness. Therefore, it is possible to obtain substantially the same operational effects as those of the first embodiment. As shown in FIG. 4, the tongue piece 141 may of course be provided with a bent portion (corresponding to the bent portion 111C in FIG. 4) near the tip 121B.

(Sixth embodiment)
Next, a sixth embodiment of the present invention will be described with reference to FIG. 8A and 8B are views showing the yoke of the solenoid valve according to the present embodiment as a single unit. FIG. 8A is a bottom view of the yoke viewed from the same direction as FIG. 3A, and FIG. It is the longitudinal cross-sectional view seen from the arrow VIII-VIII direction in the inside.

  As shown in FIGS. 8A and 8B, the yoke 150 used in the present embodiment is provided continuously on the annular bottom 150A and the outer periphery of the bottom 150A, as in the first embodiment. A cylindrical portion 150B serving as the side portion formed, a cover plate (not shown) that closes the opening end of the cylindrical portion 150B, and an insertion hole 150C. The yoke 150 has a bent portion 150D where the bottom portion 150A and the cylindrical portion 150B intersect. Similarly to the fifth embodiment, the bottom 150A of the yoke 150 is an elastic portion that extends radially in the radial direction of the bottom 150A and is arranged at substantially equal intervals in the circumferential direction. Tongue pieces 151, 151, 151 are provided.

  Here, the tongue piece 151 is formed by cutting and raising the yoke 150 from the bottom portion 150A to the cylindrical portion 150B, so that the base end portion 151A side is positioned at the bottom portion 150A and the distal end portion 151B side includes a part of the cylindrical portion 150B. It is formed as an L-shaped elongated plate. The tongue piece 151 extends from the bottom 150A toward the end surface (not shown) of the base, and the bent portion 151C is elastically brought into contact with the end surface.

  In the present embodiment configured as described above, the bent portion 150D where the bottom 150A of the yoke 150 and the cylindrical portion 150B intersect with each other as it is is the bent portion 151C of the tongue piece 151 (corresponding to the bent portion 111C of the second embodiment). Therefore, when the yoke 150 is manufactured, it is not necessary to additionally perform a pressing process or the like for forming the bent portion 151C on the tongue piece 151, and the manufacturing man-hour of the yoke 150 can be reduced.

  In the first embodiment, the case where the tongue piece 80 provided on the bottom 73A of the yoke 73 is formed as a substantially rectangular plate extending straight has been described as an example. For example, the tongue pieces 75 ′ and 75 ′ may be formed as arcuate plates extending in the circumferential direction of the bottom 73 </ b> A of the yoke 73, as in the first modification of the present invention shown in FIG. 9. .

  Further, in the first embodiment, the case where the cylindrical yoke 73 is employed has been described as an example. However, the present invention is not limited thereto, and for example, as shown in FIGS. You may employ | adopt the yoke 200 which makes | forms the substantially U shape which consists of side plate part 200A, 200A and the connection board part 200B which connects these each side plate part 200A. In this case, for example, the side plate portion 200 </ b> A of the yoke 200 is cut and raised to form the tongue piece 201, and the tip portion 201 </ b> A of the tongue piece 201 is elastically brought into contact with the protrusion 202 protruding from the end surface 101 of the base body 100. Thus, rattling can be prevented by fixing the yoke 200.

  Further, in the first embodiment, the case where the tongue piece 75 is formed by cutting and raising the bottom portion 73A of the yoke 73 has been described as an example. However, the present invention is not limited to this, and for example, the virtual piece in FIG. The tongue piece 300 may be formed by cutting and raising the cylindrical portion 73B of the yoke 73 as indicated by a line. In this case, for example, the tongue piece 300 can be elastically brought into contact with the protruding portion 301 protruding from the end surface 101 of the base body 100 to fix the yoke 73 and prevent rattling. Alternatively, the tip of the tongue piece 300 may be bent and brought into direct contact with the end surface 101 of the base body 100.

  Furthermore, in the second embodiment, the case where the bent portion 111C is brought into contact with the end surface of the base body by bending the distal end portion 111B side of the tongue piece 111 into a square shape has been described as an example. For example, as shown by a phantom line in FIG. 4B, the bent portion 111C is bent by bending the tip end portion 111B side of the tongue piece 111 so as to be substantially parallel to the bottom portion 110A of the yoke 110. Alternatively, the end 111B ′ side, which is the tip side, may be brought into wide contact with the end surface of the base.

  Furthermore, in each of the embodiments, the case where the tongue piece is brought into contact with the base body has been described as an example. However, the present invention is not limited thereto, and for example, the tongue piece is formed by cutting and raising the cylindrical portion or the lid portion of the yoke. You may make it contact | abut to the partition wall of a housing.

  In each embodiment, the case of employing a normally open type electromagnetic valve has been described as an example. However, a normally closed type electromagnetic valve may be used.

1 is an exploded perspective view showing a vehicle brake hydraulic pressure control apparatus according to a first embodiment of the present invention. It is a principal part expanded sectional view which shows the structure around the solenoid valve which concerns on the 1st Embodiment of this invention, and a solenoid valve. It is a figure which shows the yoke of the solenoid valve concerning the 1st Embodiment of this invention alone, (a) is a bottom view which shows a yoke, (b) is the arrow III-III direction in (a) in a yoke FIG. 3C is a partially cutaway side view as seen from the perspective, and FIG. 4C is a perspective view showing the bottom side of the yoke. It is the side view of a partially broken view which looked at the yoke of the solenoid valve concerning the 2nd Embodiment of this invention from the same direction as FIG.3 (b). It is the bottom view which looked at the yoke of the solenoid valve concerning the 3rd Embodiment of this invention from the same direction as Fig.3 (a). It is the bottom view which looked at the yoke of the solenoid valve concerning the 4th Embodiment of this invention from the same direction as Fig.3 (a). It is the bottom view which looked at the yoke of the solenoid valve concerning the 5th Embodiment of this invention from the same direction as Fig.3 (a). It is a figure which shows the yoke of the solenoid valve concerning the 6th Embodiment of this invention alone, (a) is the bottom view which looked at the yoke from the same direction as Fig.3 (a), (b) is a yoke ( It is the longitudinal cross-sectional view seen from the arrow VIII-VIII direction in a). It is the bottom view which looked at the yoke of the solenoid valve concerning the 1st modification of the present invention from the same direction as Drawing 3 (a). It is a principal part expanded sectional view which shows the structure around the solenoid valve which concerns on the 2nd modification of this invention, and a solenoid valve. It is a perspective view which shows the yoke in FIG. 10 alone.

Explanation of symbols

10 Housing (Mounting member)
11 Partition Wall 100 Base 30 Solenoid Valve 40 Fixed Core (Valve Body)
40A guide hole 50 valve body 51 valve seat 60 movable core 70 coil assembly 72 coil 73, 110, 120, 130, 140, 150, 200 yoke 73A, 110A, 120A, 130A, 140A, 150A bottom 73B, 110B, 150B cylinder Part (side)
75, 75 ', 111, 121, 131, 141, 151, 201, 300 Tongue piece 75A, 111A, 121A, 131A, 141A, 151A Base end portion 75B, 111B, 121B, 131D, 151B, 201A Tip portion 111C Bending portion 131B, 131C Bending part 150D Bending part 151C Bending part L Axis line R Concentric circle

Claims (9)

A coil assembly including a coil disposed so as to surround the valve body fixed to the base from the outer peripheral side and a yoke disposed outside the coil is supported by a mounting member mounted on the base. A valve,
An electromagnetic valve characterized in that an elastic part is provided on the yoke so as to extend from the yoke and abut against at least one of the base and the mounting member so as to be elastically deformable. A valve body that is fixed to the electromagnetic valve mounting hole of the base on which the fluid circuit is formed, and in which a movable core is movably provided;
A coil disposed so as to surround the valve body from the periphery in order to move the movable core;
A yoke provided around the coil and having a bottom,
The coil and the yoke are electromagnetic valves arranged between the base and a mounting member mounted on the base and supported by the mounting member,
An electromagnetic valve characterized in that the yoke is provided with an elastic portion extending from the bottom and abutting on the base so as to be elastically deformable.   The electromagnetic valve according to claim 1, wherein the elastic portion is a tongue piece formed by cutting and raising the yoke.   The electromagnetic valve according to claim 3, wherein the tongue piece is bent at a tip, and a bent position or a portion closer to the tip than the bent position is brought into contact with the base body or the mounting member.   The electromagnetic valve according to claim 3 or 4, wherein the tongue piece has a base end side wider than a tip end side.   4. The tongue piece is formed by cutting a plurality of tongue pieces in a tangential direction in contact with a concentric circle centering on the axis of the yoke and facing each other across the yoke axis. Item 6. The solenoid valve according to any one of items 5 to 6.   The electromagnetic valve according to any one of claims 3 to 5, wherein the tongue piece is formed by being cut and raised in a radial direction of the bottom portion.   The yoke has a side portion that continuously extends from the outer periphery of the bottom portion in the axial direction of the coil, and the tongue piece is located at the bottom portion of the yoke and the distal end side is a part of the side portion of the yoke. The electromagnetic valve according to claim 7, comprising:   The solenoid valve according to any one of claims 3 to 7, wherein the tongue piece is curved at a midpoint from a base end to a tip end.

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