JP2014149007A - Electromagnetic valve - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electromagnetic valve which secures the predetermined quality at low costs.SOLUTION: A cutout part 64 for avoiding interference with a terminal 65 of a solenoid 15 is provided at an electromagnetic part cover 12. An electromagnetic valve 1 includes a connector housing 91. The connector housing 91 is formed by integrally forming a connector part 92 attached to the terminal 65 with a protection cover 93 which is disposed on a coil 14 of the solenoid 15 and closes the cutout part 64. The connector part 92 of the connector housing 91 is attached to the terminal 65 thereby allowing the protection cover 93 to protect the coil of the solenoid 15 and close the cutout part 64 opened in the electromagnetic part cover 12.

Description

  The present invention relates to an electromagnetic valve used in, for example, a hydraulic circuit.

  Conventionally, a linear solenoid is known as an electromagnetic valve (for example, Patent Document 1).

  In this linear solenoid, a coil wound around a bobbin is resin-molded to form a molded type electromagnetic valve.

  On the other hand, as another electromagnetic valve, as shown in FIG. 3, a moldless type electromagnetic valve 801 is known. The electromagnetic valve 801 includes an electromagnetic valve body 802 and a nozzle 803, and a spool 804 is accommodated in the nozzle 803.

  The electromagnetic valve main body 802 includes a container-shaped electromagnetic part cover 811, and a solenoid 812 is accommodated in the electromagnetic part cover 811. A cutout portion 814 extending from the end opening 813 toward the inner side in the axial direction is provided on the peripheral surface of the electromagnetic portion cover 811, and the solenoid 812 is accommodated from the end opening 813. In addition, interference with a terminal 815 provided in the solenoid 812 is prevented.

  The solenoid 812 accommodates a core 821 excited by the solenoid 812 and a yoke 823 connected to the tip of the core 821 via a connection pipe 822. The core 821 and the yoke 823 are connected to each other. A plunger 824 is accommodated therebetween.

  Thus, the plunger 824 is configured to operate in accordance with the energized state of the solenoid 812, and the spool 804 can be driven in response thereto.

  In such an electromagnetic valve 801, a connector portion 832 surrounding the terminal 815 is attached to the bobbin 831 of the solenoid 812, and a harness for energizing the coil 833 of the solenoid 812 can be connected. Has been.

JP 2012-134234 A

  However, the former mold-type solenoid valve is advantageous for damage to coil windings and contamination due to external force, but it controls the molding pressure during secondary resin molding and suppresses cost increases. Is an issue.

  Further, in the latter moldless type solenoid valve 801, since the secondary resin molding is not performed, the cost can be reduced, but it is necessary to take measures against damage to the coil winding due to external force and contamination. .

  The present invention has been made in view of such conventional problems, and an object of the present invention is to provide an electromagnetic valve capable of ensuring a predetermined quality at a low cost.

  In order to solve the above-mentioned problem, the solenoid valve according to claim 1 of the present invention has a notch for avoiding interference with a terminal provided in the solenoid when the solenoid is surrounded by the electromagnetic part cover. In the solenoid valve provided on the peripheral surface of the electromagnetic part cover, a connector housing in which a protective cover that is disposed on the solenoid winding and closes the notch part is integrally formed on the connector part attached to the terminal. Prepared.

  That is, the electromagnetic part cover surrounding the solenoid is provided with a notch for avoiding interference with a terminal provided in the solenoid when the solenoid is accommodated.

  However, the solenoid valve includes a connector housing, and the connector housing is integrated with a connector portion mounted on the terminal and a protective cover that is disposed on the solenoid winding and closes the notch portion. Is formed.

  For this reason, by attaching the connector portion of the connector housing to the terminal, the winding of the solenoid is protected by the protective cover, and the notch portion opened in the electromagnetic portion cover is protected by the protective cover. Closed.

  According to a second aspect of the present invention, the coil is formed by winding a coil around the solenoid bobbin, the terminal is bent toward the coil, and the connector portion of the connector housing is connected to the terminal. At the same time, the connector housing is attached to the solenoid by a press-fitting structure and an engaging structure.

  That is, when the connector housing is mounted, a coil is formed by winding a winding around a solenoid bobbin, and then the terminal is bent toward the coil side. For this reason, winding of a coil | winding is performed easily compared with the case where the said terminal is extended to the coil side before winding winding.

  The connector portion of the connector housing is attached to the terminal, and the connector housing is attached to the solenoid by a press-fitting structure and an engagement structure.

  Further, in the electromagnetic valve according to claim 3, a slide groove into which an edge portion of the notch portion is slid and inserted when the solenoid to which the connector housing is mounted is surrounded by the electromagnetic portion cover is provided in the protective cover. .

  That is, when the solenoid with the connector housing attached is surrounded by the electromagnetic part cover, the edge part of the notch part is slid along the slide groove provided in the protective cover.

  As described above, in the solenoid valve according to the first aspect of the present invention, by attaching the connector portion of the connector housing to the terminal, the notch portion provided in the electromagnetic portion cover for preventing interference with the terminal is provided. Can be covered with a protective cover on the connector housing.

  Thereby, the winding of the solenoid in the electromagnetic part cover can be protected by the protective cover, and the notched part opened in the electromagnetic part cover can be closed by the protective cover.

  For this reason, compared with a mold-type solenoid valve that molds a solenoid, it is not necessary to manage the molding pressure at the time of secondary resin molding and to suppress the cost increase. In addition, as compared with a moldless type solenoid valve, it is not necessary to take measures against damage to the coil winding due to an external force or contamination.

  Thereby, predetermined quality can be ensured at low cost.

  In the electromagnetic valve according to claim 2, when the connector housing is mounted, the terminal can be bent to the coil side after the winding is wound around the bobbin of the solenoid to form the coil. For this reason, winding of a coil | winding can be performed easily compared with the case where the said terminal is extended to the coil side before winding winding.

  And while attaching the connector part of the said connector housing to the said terminal, the said connector housing can be attached to the said solenoid by a press-fit structure and an engagement structure. Thereby, mounting ease can be improved.

  Further, in the electromagnetic valve according to claim 3, when the solenoid with the connector housing is enclosed by the electromagnetic part cover, the edge of the notch part of the electromagnetic part cover extends along the slide groove provided in the protective cover. The electromagnetic part cover can be assembled by sliding insertion.

  Thereby, the sealing property with the said electromagnetic part cover can be improved, and the penetration | invasion of a contamination can be prevented reliably.

It is sectional drawing which shows one embodiment of this invention. It is a disassembled perspective view which shows the embodiment. It is sectional drawing which shows the conventional solenoid valve.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

  FIG. 1 is a diagram showing an electromagnetic valve 1 according to the present embodiment, and the electromagnetic valve 1 is used for hydraulic control of an automatic transmission of an automobile.

  The solenoid valve 1 includes a solenoid valve body 11, and a solenoid 15 in which a coil 14 is wound around a bobbin 13 is accommodated in a solenoid cover 12 of the solenoid valve body 11. A core 16 excited by the solenoid 15 is accommodated in the solenoid 15, and a yoke 18 is connected to an end of the core 16 via a connecting pipe 17.

  A plunger 21 is accommodated between the core 16 and the yoke 18, and a rod 22 is fixed to the plunger 21 in a penetrating manner. A portion of the rod 22 extending from the plunger 21 is supported by the core 16 and the yoke 18 via bearings 23 and 23, and the plunger 21 is supported so as to be movable in the axial direction. .

  Thus, when the solenoid 15 is energized and the core 16 is excited, the plunger 21 is attracted by the core 16 so that the rod 22 extending from the plunger 21 can be moved to the tip side. It is configured.

  The solenoid valve main body 11 is provided with a sleeve 31 extending to the distal end side. The sleeve 31 has a flange 32 provided at the proximal end thereof and a caulking formed at the end of the electromagnetic part cover 12. The part 33 is fixed to the electromagnetic valve body 11. The sleeve 31 is formed in a cylindrical shape, and a plurality of ports 34,...

  A spool 41 is accommodated in the sleeve 31, and the spool 41 is held movably in the axial direction. The spool 41 includes a cylindrical shaft portion 42 and valve portions 43,... Having a diameter larger than that of the shaft portion 42. The valve portions 43,. It is configured to be in sliding contact with the side surface.

  A coil spring 52 is elastically supported between the end face of the valve portion 43 provided at the tip of the spool 41 and the plug member 51 that closes the tip of the sleeve 31, and the spool 41 has the shaft portion 42. The base end face is urged so as to abut on the tip of the rod 22 extending from the plunger 21.

  Accordingly, the spool 41 urged toward the proximal end side by the coil spring 52 is configured to be driven toward the distal end side when the plunger 21 is operated.

  As shown in FIG. 2, the electromagnetic part cover 12 of the electromagnetic valve body 11 is formed in a bottomed cylindrical shape having one end opened by a circular bottom surface 61 and a cylindrical peripheral surface 62. The surface 62 is provided with a rectangular notch 64 extending from the end opening 63 toward the bottom surface 61 side. Thereby, when the solenoid 15 is accommodated from the end opening 63, interference between the terminals 65, 65 provided on the solenoid 15 and the electromagnetic part cover 12 is prevented.

  The opening edge of the end opening 63 of the electromagnetic part cover 12 is configured to be crimped after the solenoid 15 is accommodated in the electromagnetic part cover 12 as shown in FIG. The caulking portion 33 is formed.

  As shown in FIG. 2, the bobbin 13 of the solenoid 15 is provided with a plate-like bobbin side extending portion 71 extending laterally on the base end side thereof, and the bobbin side extending portion 71 is provided with the terminals 65 and 65 to which the windings of the coil 14 are connected. The terminals 65, 65 are extended along the bobbin-side extending portion 71 in the initial stage, and after the bobbin 13 is wound with a winding to form a coil 14, the terminal 65 is bent toward the coil 14. It is configured to be. Protrusions extending in the circumferential direction of the bobbin 13 are provided on both side surfaces of the bobbin side extending portion 71, and press-fitting portions 72, 72 are constituted by the respective protrusions.

  As shown in FIG. 1, an engagement claw 81 is provided on the tip surface of the bobbin 13, and the engagement claw 81 becomes thicker from the outer periphery of the bobbin 13 toward the center. It is configured.

  As shown in FIG. 2, a connector housing 91 is attached to the terminals 65, 65. The connector housing 91 is integrally formed with a connector portion 92 attached to the terminals 65, 65 and a protective cover 93 disposed on the coil 14 of the solenoid 15 and closing the notch portion 64 of the electromagnetic portion cover 12. It becomes.

  The protective cover 93 is formed in a curved plate shape, and is formed in a circular arc shape protruding upward in FIG. A cover side extension portion 94 extending upward in FIG. 2 is integrally formed at the base end portion of the protective cover 93, and the base end side is provided on both sides of the cover side extension portion 94. The cover side flange portions 95 and 95 are integrally formed. Between the cover side flange portions 95 and 95, a press-fit portion 96 capable of press-fitting the press-fit portions 72 and 72 provided in the bobbin side extending portion 71 is formed. This press-fit structure is configured so that it can be mounted on the bobbin 13.

  The cover side extending portion 94 is integrally formed with the rectangular cylindrical connector portion 92, and the connector portion 92 has a connector insertion hole 101 extending in the length direction of the protective cover 93. Has been. The connector insertion hole 101 is composed of a wide portion formed wide and a narrow portion provided on the upper portion of the wide portion, and has a rectangular shape into which a connector outside the figure provided in the harness can be inserted. Is formed.

  In the connector insertion hole 101, the terminals 65, 65 bent by the bobbin side extending portion 71 are inserted and arranged in a state where the connector housing 91 is mounted on the solenoid 15. The harness provided in the connector can be electrically connected to the terminals 65 and 65 in a state in which the connector is inserted into the connector insertion hole 101.

  A cover side tongue piece 111 extending toward the back side is integrally formed at the front end of the protective cover 93, and a rectangular engagement hole 112 is formed at the center front end portion of the cover side tongue piece 111. It has been established. As shown in FIG. 1, the cover-side tongue piece 111 is configured to be inserted between the flange portion 32 of the sleeve 31 and the end surface of the bobbin 13 of the solenoid 15. The cover-side tongue piece 111 is configured to get over the engagement claw 81 provided on the end surface of the bobbin 13 and to engage with each other in a state where the engagement claw 81 is inserted into the engagement hole 112. ing. As a result, the connector housing 91 can be attached to the solenoid 15 by this engagement structure (snap-fit structure).

  As shown in FIG. 2, slide grooves 121 and 121 (only one is shown) extend in the length direction on both sides of the protective cover 93. The edge portions 122 and 122 of the cutout portion 64 formed in the portion cover 12 can be inserted from the proximal end side. As a result, when the solenoid 15 with the connector housing 91 attached is surrounded by the electromagnetic part cover 12, the opposing edges 122, 122 of the notch part 64 are inserted into the slide grooves 121, 121, respectively. The protective cover 93 and the electromagnetic part cover 12 can be engaged with each other by sliding.

  In the present embodiment according to the above configuration, the electromagnetic unit cover 12 surrounding the solenoid 15 is for avoiding interference with the terminals 65 and 65 provided in the solenoid 15 when the solenoid 15 is accommodated. A notch 64 is provided.

  However, the electromagnetic valve 1 includes a connector housing 91, which is disposed on the connector portion 92 attached to the terminals 65 and 65 and the coil 14 of the solenoid 15, and the notch. A protective cover 93 that closes the portion 64 is integrally formed.

  For this reason, by attaching the connector portion 92 of the connector housing 91 to the terminals 65, 65, the winding of the solenoid 15 is protected by the protective cover 93 and opened in the electromagnetic portion cover 12. The notch 64 is closed by the protective cover 93.

  In this way, by attaching the connector portion 92 of the connector housing 91 to the terminals 65, 65, the notch portion 64 provided in the electromagnetic portion cover 12 for preventing interference with the terminals 65, 65, The connector housing 91 can be covered with a protective cover 93.

  Thereby, the winding of the solenoid 15 in the electromagnetic part cover 12 can be protected by the protective cover 93, and the notch part 64 opened in the electromagnetic part cover 12 is closed by the protective cover 93. Can do.

  For this reason, compared with a mold type solenoid valve that molds the solenoid 15, there is no need to manage the molding pressure at the time of secondary resin molding and to suppress the cost increase. In addition, as compared with a moldless type solenoid valve, it is not necessary to take measures against damage to the coil winding due to an external force or contamination.

  Thereby, predetermined quality can be ensured at low cost.

  When attaching the connector housing 91 to the solenoid 15, first, a coil 14 is formed by winding a winding around the bobbin 13 of the solenoid 15, and then extending along the bobbin side extending portion 71. The existing terminals 65 and 65 can be bent toward the coil 14 wound around.

  For this reason, it is possible to easily wind the winding as compared with the case where the terminals 65 and 65 extend toward the coil 14 before winding.

  Then, the terminals 65 and 65 extending from the bobbin side extending portion 71 are inserted into the connector insertion hole 101 of the connector portion 92 in the connector housing 91.

  Next, the press-fit portions 72 and 72 provided in the bobbin-side extension portion 71 are press-fitted into a press-fit portion 96 provided between the cover-side flange portions 95 and 95 of the cover-side extension portion 94, and The cover-side tongue piece 111 of the protective cover 93 is inserted between the flange portion 32 of the sleeve 31 and the end surface of the bobbin 13 of the solenoid 15, and the engagement of the cover-side tongue piece 111 is snap fitted. The engagement hole 112 is engaged with the engagement claw 81 on the solenoid 15 side.

  Thus, the connector portion 92 of the connector housing 91 is mounted on the terminals 65 and 65, and the connector housing 91 is inserted into the press-fit portions 72 and 72 and the press-fit portion 96, and the engagement is performed. The solenoid 15 can be mounted by the engagement structure of the hole 112 and the engagement claw 81. Thereby, mounting ease can be improved.

  When the solenoid 15 with the connector housing 91 attached is surrounded by the electromagnetic part cover 12, the edges 122 and 122 of the cutout part 64 in the electromagnetic part cover 12 are provided in the protective cover 93. The slide is inserted along the slide grooves 121 and 121.

  Thus, the electromagnetic part cover 12 is assembled by slidingly inserting the edge parts 122, 122 of the cutout part 64 of the electromagnetic part cover 12 along the slide grooves 121, 121 provided in the protective cover 93. Can do.

  Thereby, the sealing performance of the electromagnetic part cover 12 and the connector housing 91 can be improved, and the entry of contamination in the electromagnetic part cover 12 can be reliably prevented.

DESCRIPTION OF SYMBOLS 1 Solenoid valve 12 Electromagnetic part cover 13 Bobbin 14 Coil 15 Solenoid 62 Peripheral surface 65 Terminal 72 Press fit part 91 Connector housing 92 Connector part 93 Protection cover 96 Press fit part 112 Engagement hole 121 Slide groove

Claims (3)

When enclosing the solenoid with the electromagnetic part cover, in the electromagnetic valve provided with a notch part on the peripheral surface of the electromagnetic part cover for avoiding interference with the terminal provided in the solenoid,
An electromagnetic valve comprising: a connector housing in which a protective cover that is disposed on a winding of the solenoid and that closes the notch is integrally formed on a connector portion mounted on the terminal.   After winding the winding around the bobbin of the solenoid to form a coil, the terminal is bent to the coil side, the connector portion of the connector housing is attached to the terminal, and the connector housing is press-fitted and 2. The solenoid valve according to claim 1, wherein the solenoid valve is attached to the solenoid with an engagement structure.   3. The protective cover is provided with a slide groove into which an edge portion of the notch portion is slid and inserted when the solenoid to which the connector housing is mounted is surrounded by the electromagnetic portion cover. The solenoid valve described.

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