solenoid valve

Abstract

To provide an electromagnetic valve which can suppress the rotation of a solenoid case with respect to a bracket while suppressing increase of the weight of the bracket.SOLUTION: An electromagnetic valve 1 comprises a valve body 4, a spool, and an electromagnetic solenoid 2. The electromagnetic solenoid 2 comprises a bottomed cylindrical solenoid case 21, a connector 24 drawn out to the outside from the inside of the solenoid case 21, and a bracket 26 fixed to the valve body 4. In the solenoid case 21, a connector insertion hole 212e into which the connector 24 is inserted, and a bracket insertion hole 212h into which the bracket 26 is inserted are formed at positions which are different from each other in a peripheral direction. A whirl stop part 212i for whirl-stopping the solenoid case 21 with respect to the bracket 26 is formed between the connector insertion hole 212e and the bracket insertion hollow 212h of the solenoid case 21.SELECTED DRAWING: Figure 5

Description

[Technical Field]

[0001] The present invention relates to a solenoid valve. [Background technology]

[0002] Patent Document 1 discloses a solenoid valve including a solenoid unit that moves a pin axially when a coil is excited, and a valve body that houses a spool that moves axially as the pin moves. The solenoid unit includes a solenoid case that houses the components of the solenoid unit. The solenoid case is cylindrical and has a bottom that opens toward the valve body. The solenoid unit also includes a bracket and a terminal that extend from the inside of the solenoid case to the outside. The bracket has a bracket main body that is crimped to the open end of the solenoid case inside the solenoid case, and an attachment portion that is attached to the valve body outside the solenoid case. The terminal is a connector for connecting the coil to an external device and extends from the inside of the solenoid case to the outside. The solenoid case has a notch that is continuous with the open end, and the terminal and the bracket are inserted into the common notch. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2019-60348 Summary of the Invention [Problem to be solved by the invention]

[0004] Here, space is required around the terminal to connect the mating connector to the terminal, and space must be secured around the bracket's mounting portion to accommodate fastening members such as bolts. Therefore, when the notch in the solenoid case is configured to allow both the terminal and the bracket to pass through, as in the solenoid valve described in Patent Document 1, the notch must be large in the circumferential direction. This makes it easy for a circumferential gap to form between the bracket and the solenoid case. When such a gap is formed, vibrations or other factors generated in the solenoid may cause the solenoid case to rotate relative to the bracket, and the connector may rotate in response to the rotation of the solenoid case, potentially causing the connector to deviate from its desired circumferential position.

[0005] To prevent the solenoid case from rotating relative to the bracket, it is possible to widen the portion of the bracket that passes through the notch, so that the width of the notch is roughly the same as that of the bracket. This allows the bracket and the notch to abut in the circumferential direction, preventing the solenoid case from rotating relative to the bracket, but it increases the weight of the bracket.

[0006] The present invention has been made in consideration of the above circumstances, and has an object to provide a solenoid valve that can suppress rotation of the solenoid case relative to the bracket while suppressing an increase in the weight of the bracket. [Means for solving the problem]

[0007] In order to achieve the above object, the present invention provides a valve hole formation body having a valve hole formed in the axial direction, a spool that is axially movable within the valve hole, and an electromagnetic solenoid that is arranged on one axial side of the valve hole and moves the spool in the axial direction when current is applied to an electromagnetic coil, the electromagnetic solenoid comprising a cylindrical solenoid case that houses the electromagnetic coil and opens to the valve hole side in the axial direction, a connector that has a terminal electrically connected to the electromagnetic coil and is drawn out from inside the solenoid case to the outside, and a terminal that is electrically connected to the electromagnetic coil and extends from the solenoid case to the outside. and a bracket fixed to the solenoid case and having another part fixed to the valve body outside the solenoid case, wherein the solenoid case has a connector insertion hole formed to be continuous with an open end of the solenoid case and through which the connector is inserted, and a bracket insertion hole formed to be continuous with the open end and through which the bracket is inserted, at different positions in the circumferential direction, and a rotation prevention portion is formed in the solenoid case between the connector insertion hole and the bracket insertion hole to prevent rotation of the solenoid case relative to the bracket. the open end of the solenoid case is crimped toward the bracket except for the anti-rotation portion, and the anti-rotation portion is not crimped toward the bracket. Provide solenoid valve 。 Furthermore, in order to achieve the above object, the present invention provides a valve hole formation body having a valve hole formed in the axial direction, a spool that is axially movable within the valve hole, and an electromagnetic solenoid that is arranged on one axial side of the valve hole and moves the spool in the axial direction when current is passed through an electromagnetic coil, wherein the electromagnetic solenoid houses the electromagnetic coil and comprises a cylindrical solenoid case with a bottom that opens toward the valve hole in the axial direction, a connector that has a terminal electrically connected to the electromagnetic coil and is drawn out from inside the solenoid case to the outside, and a connector that is partly fixed to the solenoid case within the solenoid case and another part is fixed to a valve body outside the solenoid case. and a bracket for inserting the connector into the solenoid case, wherein the solenoid case has a connector insertion hole formed continuous with the open end of the solenoid case and for inserting the connector, and a bracket insertion hole formed continuous with the open end and for inserting the bracket, at different positions in the circumferential direction, and a rotation prevention portion for preventing rotation of the solenoid case relative to the bracket is formed between the connector insertion hole and the bracket insertion hole in the solenoid case, and a recess that is open to one side in the circumferential direction is formed in the bracket on the surface facing opposite to the side where the solenoid case is open, and the rotation prevention portion is disposed within the recess. [Effects of the Invention]

[0008] According to the present invention, it is possible to provide a solenoid valve that can suppress rotation of the solenoid case relative to the bracket while suppressing an increase in the weight of the bracket. [Brief explanation of the drawings]

[0009] [Figure 1] FIG. 1 is a front view of a solenoid valve according to a first embodiment. [Figure 2] FIG. 2 is a cross-sectional view taken along the line II-II in FIG. [Figure 3] FIG. 3 is a cross-sectional view taken along the line III-III in FIG. [Figure 4] FIG. 4 is a cross-sectional view taken along the line IV-IV in FIG. [Figure 5] FIG. 1 is a perspective view of a solenoid valve according to a first embodiment. [Figure 6] FIG. 2 is a perspective view of a solenoid case in the first embodiment. [Figure 7] FIG. 2 is a perspective view of a bracket according to the first embodiment. [Figure 8] FIG. 2 is a plan view of a bracket according to the first embodiment. [Figure 9] FIG. 10 is a perspective view of a solenoid valve according to a second embodiment. [Figure 10] FIG. 10 is a perspective view of a bracket according to a second embodiment. [Figure 11] FIG. 10 is a plan view of a bracket according to a second embodiment. [Figure 12] FIG. 11 is a front view of a solenoid case according to a third embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0010] [First embodiment] A first embodiment of the present invention will be described with reference to Figures 1 to 8. The embodiment described below is shown as a preferred specific example for carrying out the present invention, and although various technically preferable technical matters are specifically exemplified, the technical scope of the present invention is not limited to this specific embodiment.

[0011] Fig. 1 is a front view of a solenoid valve 1 in this embodiment. Fig. 2 is a cross-sectional view taken along line II-II in Fig. 1. Fig. 3 is a cross-sectional view taken along line III-III in Fig. 1. Note that a connector is not shown in Fig. 3. Fig. 4 is a cross-sectional view taken along line IV-IV in Fig. 1. Fig. 5 is a perspective view of the solenoid valve 1 in this embodiment.

[0012] The solenoid valve 1 is used, for example, to control the hydraulic pressure of a hydraulic actuator in an automobile transmission. As shown in Figures 1 and 2, the solenoid valve 1 includes an electromagnetic solenoid 2, a spool 3, a valve hole formation body 4, and a biasing member 5. Hereinafter, the direction in which the central axis C of the spool 3 extends will be simply referred to as the "axial direction." Furthermore, one side of the axial direction, where the spool 3 is disposed relative to the electromagnetic solenoid 2, will be referred to as the front, and the opposite side will be referred to as the rear.

[0013] When current is applied to the electromagnetic coil 23, the electromagnetic solenoid 2 moves the spool 3 disposed in a valve hole 40 formed in the valve hole formation body 4 forward in the axial direction, thereby varying the state of communication between a plurality of ports 42 formed in the valve hole formation body 4 to communicate with the valve hole 40. As shown in Figures 2 to 4, the electromagnetic solenoid 2 includes a solenoid case 21, a bobbin 22, an electromagnetic coil 23, a connector 24, a solenoid core 25, a bracket 26, a plunger 27, and a shaft 28.

[0014] 6 is a perspective view of the solenoid case 21 in this embodiment. The solenoid case 21 is made of a soft magnetic material such as iron and houses each component part of the electromagnetic solenoid 2. The solenoid case 21 has a cylindrical shape with a bottom that opens toward the front. The solenoid case 21 has a bottom wall portion 211 that is approximately circular when viewed from the rear, and a cylindrical side wall portion 212 that extends forward from the entire circumference of the bottom wall portion 211.

[0015] 2 to 4, a support hole 211a that supports the shaft 28 is formed in the center of the bottom wall portion 211. The support hole 211a supports the shaft 28 via the bushing 11 so that the shaft 28 is slidable in the axial direction. A cylindrical bottom wall protrusion 211b that protrudes forward from the bottom wall portion 211 is formed on the outer periphery of the support hole 211a. The bottom wall protrusion 211b separates an area in the solenoid case 21 where the plunger 27 is disposed from an area where the bobbin 22 and the electromagnetic coil 23 are disposed. The plunger 27 is disposed on the inner periphery of the bottom wall protrusion 211b, and the bobbin 22 and the electromagnetic coil 23 are disposed between the bottom wall protrusion 211b and the side wall portion 212.

[0016] The side wall portion 212 includes a first side wall portion 212a formed forward from the bottom wall portion 211, and a second side wall portion 212b formed further forward from the first side wall portion 212a and having an inner diameter larger than that of the first side wall portion 212a. The first side wall portion 212a and the second side wall portion 212b have the same outer diameter, and the second side wall portion 212b is formed thinner than the first side wall portion 212a. The solenoid core 25 axially abuts against a step portion 212c between the first side wall portion 212a and the second side wall portion 212b, thereby positioning the solenoid core 25 relative to the solenoid case 21.

[0017] As shown in FIG. 6, a connector insertion hole 212e and a bracket insertion hole 212h are formed in the side wall portion 212 so as to be continuous with the open end of the solenoid case 21. Each of the connector insertion hole 212e and the bracket insertion hole 212h has a shape such that a notch is cut out from the open end of the second side wall portion 212b. The connector insertion hole 212e and the bracket insertion hole 212h are formed at different positions in the circumferential direction of the side wall portion 212 (hereinafter simply referred to as the "circumferential direction"). The bracket insertion hole 212h and the connector insertion hole 212e are formed at positions adjacent to each other in the circumferential direction and occupy an area equal to or less than half of the entire circumference of the side wall portion 212. The bracket insertion hole 212h is long in the circumferential direction and short in the axial direction, while the connector insertion hole 212e is short in the circumferential direction and long in the axial direction. The bracket insertion hole 212h is formed in the first side wall portion 212a, and the connector insertion hole 212e is formed in the first side wall portion 212a and the second side wall portion 212b.

[0018] A rotation prevention portion 212i that prevents rotation of the solenoid case 21 relative to the bracket 26 is formed in a portion of the second side wall portion 212b between the connector insertion hole 212e and the bracket insertion hole 212h. As shown in FIG. 5, the rotation prevention portion 212i is closely opposed to the bracket 26 in the circumferential direction and abuts against the bracket 26 in the circumferential direction, thereby preventing rotation of the solenoid case 21 relative to the bracket 26. The distance between the bracket 26 and the rotation prevention portion 212i in the circumferential direction is equal to or less than 1 / 10 of the entire circumferential length of the side wall portion 212 (preferably equal to or less than 1 / 20 of the entire circumferential length of the side wall portion 212), and the bracket and the rotation prevention portion 212i may abut against each other. By reducing the distance between the bracket 26 and the rotation prevention portion 212i (or eliminating the distance) as described above, rotation of the solenoid case 21 relative to the bracket 26 can be prevented. The circumferential dimension of the rotation prevention portion 212i is smaller than the axial dimension. The circumferential width of the anti-rotation portion 212i is 1 / 10 or less of the total circumferential length of the side wall portion 212 (preferably 1 / 20 or less of the total circumferential length of the side wall portion 212).

[0019] A crimped portion 212d is formed in the front portion of the second side wall portion 212b, with the inner and outer surfaces having smaller diameters than the adjacent rear portion. The crimped portion 212d is crimped toward the bracket 26 disposed inside the solenoid case 21. As a result, as shown in FIGS. 2 to 4, the solenoid core 25 and the bracket 26 are sandwiched between the step portion 212c of the side wall portion 212 and the crimped portion 212d, and the solenoid core 25 and the bracket 26 are fixed to the solenoid case 21. In this embodiment, the anti-rotation portion 212i does not constitute the crimped portion 212d. That is, in this embodiment, the anti-rotation portion 212i is formed straight in the axial direction and is not crimped.

[0020] The bobbin 22 is made of an electrically insulating material, and has an electromagnetic coil 23 wound around it from the outer periphery. The electromagnetic coil 23 is electrically connected to a terminal 242b (see FIGS. 1 and 4) of the connector 24. The connector 24 is electrically connected to an external device and supplies an excitation current to the electromagnetic coil 23. As shown in FIG. 4, the connector 24 is configured integrally with the bobbin 22. The connector 24 can be manufactured, for example, by insert molding in which the bobbin 22 is placed in a mold for molding the connector 24.

[0021] 4, the connector 24 has a connector extension portion 241 that extends radially outward from the side wall portion 212 from the portion connected to the bobbin 22, and a connector connection portion 242 to which a mating connector is connected. The connector extension portion 241 extends radially from the side wall portion 212 and is inserted into the connector insertion hole 212e of the solenoid case 21. The connector connection portion 242 has an opening 242a that opens toward the rear and a terminal 242b that protrudes rearward within the opening 242a, and is connected to a mating connector to supply an excitation current. The connector connection portion 242 has a portion that is wider in the circumferential direction than the connector extension portion 241, and a portion of this portion is formed at the same position in the circumferential direction as the anti-rotation portion 212i.

[0022] The solenoid core 25 is made of a soft magnetic material. A core through hole 25a is formed in the solenoid core 25, penetrating in the axial direction and allowing the shaft 28 to be inserted therein. The solenoid core 25 supports the shaft 28 slidably in the axial direction via a bushing 12 fitted into the core through hole 25a. The solenoid core 25 has a core body 251 inserted inside the bobbin 22 and the electromagnetic coil 23, and a core flange 252 located at the front end of the solenoid core 25 and protruding radially outward beyond the core body 251.

[0023] The core body 251 has a cylindrical core protrusion 251a extending rearward from its outer periphery. The core body 251 faces the bottom wall protrusion 211b of the solenoid case 21 across an axial gap. The core protrusion 251a has a portion on its outer periphery that tapers toward the rear so that magnetic flux is concentrated between the core protrusion 251a and the bottom wall protrusion 211b when the electromagnetic coil 23 is energized, thereby making it easier to attract the plunger 27 to the solenoid core 25. The inner diameter of the core protrusion 251a is larger than the outer diameter of the plunger 27, and when the plunger 27 is attracted to the solenoid core 25 when the electromagnetic coil 23 is energized, the plunger 27 is inserted inside the core protrusion 251a.

[0024] The core flange portion 252 is disposed in front of the bobbin 22 and the electromagnetic coil 23. The outer peripheral end of the core flange portion 252 abuts in the axial direction against the step portion 212c of the solenoid case 21. The bracket 26 abuts against the front surface of the core flange portion 252.

[0025] FIG. 7 is a perspective view of the bracket 26 in this embodiment. FIG. 8 is a plan view of the bracket 26 in this embodiment. The bracket 26 has a bracket main body 261 housed in the solenoid case 21 and an attachment portion 262 protruding radially outward from a circumferential portion of the bracket main body 261. A bracket through-hole 261a penetrating the axial direction is formed in the center of the bracket main body 261 when viewed from the axial direction. As shown in FIGS. 2 to 4, the shaft 28 and the spool 3 are inserted through the bracket through-hole 261a. The bracket main body 261 has a crimped portion 261b protruding outward and rearward. As shown in FIG. 4, the crimped portion 261b abuts against the outer periphery of the core flange portion 252 in the axial direction and is crimped to the crimped portion 212d of the solenoid case 21 together with the core flange portion 252.

[0026] A notch 261c is provided in a region of the bracket main body 261 opposite the region where the mounting portion 262 is provided in the circumferential direction, and the notch 261c is open facing away from the mounting portion 262. As shown in Fig. 2, the notch 261c is intended to form a gap between the bracket 26 and the solenoid case 21. By forming this gap, as the spool 3 moves axially inside the valve hole formation body 4, some of the hydraulic oil flows in and out of the solenoid case 21 through the notch 261c. The circumferential region of the bracket 26 where the notch 261c is formed is not crimped to the crimping portion 212d of the solenoid case 21.

[0027] 7 and 8, a protective wall 261d that protrudes rearward is formed around the bracket through-hole 261a on the rear surface of the bracket main body 261. The protective wall 261d is formed in a U-shape that opens toward the side opposite the cutout 261c. The protective wall 261d is provided to separate the cutout 261c and the bracket through-hole 261a, and serves to prevent foreign matter from entering the electromagnetic solenoid 2 from outside through the cutout 261c. As shown in FIGS. 2 to 4, the protective wall 261d abuts against or closely faces the rear surface of the solenoid core 25.

[0028] 2 and 5, the mounting portion 262 is inserted into the bracket insertion hole 212h of the solenoid case 21. On both sides of the mounting portion 262 in the circumferential direction, the circumferential distance between the mounting portion 262 and the portion of the solenoid case 21 that forms the bracket insertion hole 212h is equal to or less than ¼ of the entire circumferential length of the side wall portion 212 (preferably equal to or less than ⅙ of the entire circumferential length of the side wall portion 212). This makes it possible to prevent the solenoid case 21 from rotating relative to the bracket 26.

[0029] A bolt insertion hole 262a is formed in the mounting portion 262, penetrating in the axial direction. The mounting portion 262 also overlaps in the axial direction with a fixing portion 41 formed in the valve body, which serves as the valve hole formation body 4. As shown in Fig. 2, a female threaded hole 411 that communicates with the bolt insertion hole 262a is formed in the fixing portion 41. A bolt B is inserted into the bolt insertion hole 262a and threaded into the female threaded hole 411 of the fixing portion 41, thereby fastening the bracket 26 to the valve body.

[0030] As shown in FIGS. 3, 5, 7, and 8, a recess 263 that is open to one side in the circumferential direction is formed on the rear surface of the mounting portion 262. As shown in FIG. 5, the recess 263 is open toward the side where the anti-rotation portion 212i is located relative to the bracket 26 in the circumferential direction. The anti-rotation portion 212i is inserted into the recess 263. As shown in FIGS. 7 and 8, in this embodiment, the recess 263 is also formed on the outer periphery of the bracket main body 261. That is, a portion of the recess 263 is formed so that the outer periphery of the bracket main body 261 is partially recessed. This prevents the anti-rotation portion from colliding with the bracket 26 and causing deformation when the solenoid case 21 is assembled to the bracket 26. In this embodiment, the recess 263 is formed on the mounting portion 262, preventing the bracket 26 from being inserted into the connector insertion hole 212e. As shown in FIG. 1, a portion of the recess 263 is formed in a position that overlaps a portion of the connector 24 when viewed in the axial direction.

[0031] 2 to 4, the plunger 27 is made of a soft magnetic material and formed into a cylindrical shape. When the electromagnetic coil 23 is in a non-energized state, the plunger 27 is disposed at a distance rearward from the solenoid core 25. When the electromagnetic coil 23 is energized, the plunger 27 is magnetically attracted toward the solenoid core 25. A plunger through-hole 271 that passes through the plunger 27 in the axial direction is formed in the center of the plunger 27 when viewed from the axial direction, and a shaft 28 is inserted and fitted into the plunger through-hole 271. The shaft 28 is made of a non-magnetic material and moves axially together with the plunger 27 while pushing the spool 3 to move it axially. The central axis of the shaft 28 is approximately aligned with that of the spool 3.

[0032] The forward movement of the plunger 27 and the shaft 28 is restricted when the front surface of the plunger 27 abuts against the solenoid core 25 via a front stopper 291, and the rearward movement of the plunger 27 is restricted when the rear surface of the plunger 27 abuts against the solenoid case 21 via a rear stopper 292. As the plunger 27 and the shaft 28 move, the spool 3 is pushed by the shaft 28 and moves in the axial direction. The spool 3 is disposed in front of the shaft 28 so that the axial ends of the spool 3 and the shaft 28 abut against each other.

[0033] The spool 3 is formed in the shape of a shaft extending in the axial direction, and is movable within an axial range between a forward end position where the plunger 27 abuts against the solenoid core 25 via a front stopper 291 and a backward end position where the plunger 27 abuts against the solenoid case 21 via a rear stopper 292.

[0034] Lands 31 protruding outward from the outer periphery are formed at multiple locations in the axial direction on the spool 3. As the spool 3 moves in the axial direction, the lands 31 open or close the communication between multiple ports 42 formed in the valve hole formation body 4, changing the communication state of the multiple ports 42.

[0035] In this embodiment, the valve hole formation body 4 is a valve body. The valve hole formation body 4 is made of metal formed by casting using a mold. A plurality of valve holes 40 are formed in parallel in the valve hole formation body 4. Each valve hole 40 is formed to pass through the valve hole formation body 4 in the axial direction. A spool 3 is housed in each of the plurality of valve holes 40. An electromagnetic solenoid 2 is disposed behind each of the plurality of valve holes 40.

[0036] The valve hole formation body 4 has a plurality of ports 42 formed in correspondence with the respective valve holes 40. The ports 42 are openings that connect the valve holes 40 to the outside of the valve hole formation body 4. As the spool 3 moves in the axial direction, the state of communication between the plurality of ports 42 fluctuates, thereby fluctuating the pressure of the hydraulic oil output from the valve hole formation body 4. As shown in Figures 2 and 5, the valve hole formation body 4, which is made up of a valve body, has a fixing portion 41 formed therein for fastening the bracket 26 of the electromagnetic solenoid 2.

[0037] As shown in Figure 2, the front of the valve hole 40 is closed by a plug 43. The plug 43 has a screw thread on its outer periphery and is screwed into an internally threaded hole on the inner periphery of the valve hole 40. A biasing member 5 is disposed between the plug 43 and the spool 3. The biasing member 5 is made of a coil spring that can expand and contract in the axial direction, and is disposed in an axially compressed state whether the spool 3 is in the forward or reverse end position. The biasing member 5 elastically biases the spool 3 rearward by its restoring force.

[0038] (Functions and Effects of the First Embodiment) In this embodiment, the solenoid case 21 has a connector insertion hole 212e that is continuous with the open end of the solenoid case 21 and through which the connector 24 is inserted, and a bracket insertion hole 212h that is continuous with the open end and through which the bracket 26 is inserted, formed at mutually different positions in the circumferential direction. A rotation prevention portion 212i that prevents rotation of the solenoid case 21 relative to the bracket 26 is formed between the connector insertion hole 212e and the bracket insertion hole 212h in the solenoid case 21. Therefore, in this embodiment, it is not necessary to form the bracket insertion hole 212h excessively wide. This allows the circumferential distance between the portion of the solenoid case 21 where the bracket insertion hole 212h is formed and the bracket 26 to be small while suppressing an increase in the weight of the bracket 26, thereby preventing rotation of the solenoid case 21 relative to the bracket 26.

[0039] Furthermore, the open end of the solenoid case 21 is crimped toward the bracket 26 except for the anti-rotation portion 212i, and the anti-rotation portion 212i is not crimped toward the bracket 26. By crimping the open end of the solenoid case 21 toward the bracket 26, the bracket 26 and the solenoid case 21 can be fixed to each other. Furthermore, because the anti-rotation portion 212i is not crimped, a decrease in the rigidity of the anti-rotation portion 212i is suppressed, and the anti-rotation effect of the anti-rotation portion 212i in preventing the solenoid case 21 from rotating relative to the bracket 26 can be further obtained.

[0040] Furthermore, the width of the anti-rotation portion 212i is smaller than its length in the axial direction. If the width of the anti-rotation portion 212i were larger, the area of the solenoid case 21 that is crimped to the bracket 26 would be narrower, which could reduce the fixing force between the bracket 26 and the solenoid case 21. However, according to this embodiment, the bracket 26 and the solenoid case 21 can be firmly fixed together.

[0041] Furthermore, a recess 263 that is open to one side in the circumferential direction is formed on the surface of bracket 26 that faces the opposite side to the side where solenoid case 21 is open, and anti-rotation portion 212i is disposed within recess 263. This allows a portion of bracket 26 to be formed wide without increasing the width of mounting portion 262 of bracket 26, thereby improving the strength of bracket 26 (particularly the strength of the base portion of mounting portion 262).

[0042] As described above, according to this embodiment, it is possible to provide a solenoid valve that can suppress an increase in the weight of the bracket and also suppress rotation of the solenoid case relative to the bracket.

[0043] [Second embodiment] Fig. 9 is a perspective view of the solenoid valve 1 in this embodiment. Fig. 10 is a perspective view of the bracket 26 in this embodiment. Fig. 11 is a plan view of the bracket 26 in this embodiment.

[0044] In this embodiment, the configuration of the bracket 26 is modified from that of the first embodiment. A hole 264 that opens to the rear surface is formed in the mounting portion 262. The diameter of the hole 264 is slightly larger than the width of the anti-rotation portion 212i. The anti-rotation portion 212i is inserted into the hole 264. In this embodiment, a portion of the mounting portion 262 is inserted into the connector insertion hole 212e.

[0045] The rest is the same as in the first embodiment. It should be noted that, among the symbols used in the second and subsequent embodiments, the same symbols as those used in the previously described embodiments represent the same components, etc. as those in the previously described embodiments, unless otherwise specified.

[0046] (Functions and Effects of the Second Embodiment) This embodiment also has the same functions and effects as the first embodiment.

[0047] [Third embodiment] FIG. 12 is a front view of the solenoid case 21 in this embodiment.

[0048] This embodiment is an embodiment in which the configuration of the solenoid case 21 is changed from that of the first or second embodiment. Specifically, in this embodiment, the shape of the connector insertion hole 212e is changed from that of the first embodiment.

[0049] In this embodiment, the connector insertion hole 212e has a first insertion hole portion 212f that is adjacent to the bracket insertion hole 212h via the anti-rotation portion 212i and has the same axial dimension as the bracket insertion hole 212h, and a second insertion hole portion 212g that is formed on the opposite side of the first insertion hole portion 212f from the anti-rotation portion 212i side and is formed to be longer in the axial direction than the first insertion hole portion 212f. The rest is the same as the first or second embodiment.

[0050] (Functions and Effects of the Third Embodiment) This embodiment also has the same functions and effects as the first or second embodiment.

[0051] (Addendum) Although the present invention has been described above based on the embodiments, the invention according to the claims is not limited to these embodiments. It should be noted that not all of the combinations of features described in the embodiments are necessarily essential to the means for solving the problems of the invention.

[0052] Furthermore, the present invention can be implemented in various ways, such as by omitting some components or adding or substituting components, without departing from the spirit of the invention.

[0053] Although the valve hole formation body is configured by the valve body in the above embodiment, the present invention is not limited to this and may be configured by a sleeve that is separate from the valve body and is inserted into the valve body. [Explanation of symbols]

[0054] 1...Solenoid valve 2...Electromagnetic solenoid 21...Solenoid case 212e...Connector insertion hole 212h: Bracket insertion hole 212i...Stop 23...Electromagnetic coil 24...Connector 242b…Terminal 26…Bracket 263...recess 264...Hole 3...Spool 4...Valvuloplast 40...Valve orifice

Claims

1. a valve hole formation body having a valve hole formed in the axial direction; a spool axially movable within the valve bore; an electromagnetic solenoid disposed on one axial side of the valve hole, for moving the spool in the axial direction by energizing an electromagnetic coil; The electromagnetic solenoid a cylindrical solenoid case that houses the electromagnetic coil and is open toward the valve hole in the axial direction; a connector having a terminal electrically connected to the electromagnetic coil and extending from the inside of the solenoid case to the outside; a bracket having a portion fixed to the solenoid case within the solenoid case and another portion fixed to the valve body outside the solenoid case, The solenoid case has a connector insertion hole formed to be continuous with an open end of the solenoid case and through which the connector is inserted, and a bracket insertion hole formed to be continuous with the open end and through which the bracket is inserted, which are formed at mutually different positions in the circumferential direction, a rotation prevention portion that prevents the solenoid case from rotating relative to the bracket is formed between the connector insertion hole and the bracket insertion hole in the solenoid case; The open end of the solenoid case is crimped toward the bracket except for the anti-rotation portion, The anti-rotation portion is not crimped toward the bracket. Solenoid valve.

2. The anti-rotation portion has a width smaller than its axial length, The solenoid valve according to claim 1 .

3. The bracket has a recess formed on a surface facing the opposite side to the side where the solenoid case is open, the recess being open on one side in the circumferential direction; The anti-rotation portion is disposed within the recess.

3. The solenoid valve according to claim 1 or 2.

4. The bracket has a hole formed on a surface facing the opposite side to the side where the solenoid case is open, The anti-rotation portion is disposed in the hole portion.

3. The solenoid valve according to claim 1 or 2.

5. A valve hole forming body having a valve hole formed in the axial direction; a spool axially movable within the valve bore; an electromagnetic solenoid disposed on one axial side of the valve hole, for moving the spool in the axial direction by energizing an electromagnetic coil; The electromagnetic solenoid a cylindrical solenoid case that houses the electromagnetic coil and is open toward the valve hole in the axial direction; a connector having a terminal electrically connected to the electromagnetic coil and extending from the inside of the solenoid case to the outside; a bracket having a portion fixed to the solenoid case within the solenoid case and another portion fixed to the valve body outside the solenoid case, The solenoid case has a connector insertion hole formed to be continuous with an open end of the solenoid case and through which the connector is inserted, and a bracket insertion hole formed to be continuous with the open end and through which the bracket is inserted, which are formed at mutually different positions in the circumferential direction, a rotation prevention portion that prevents the solenoid case from rotating relative to the bracket is formed between the connector insertion hole and the bracket insertion hole in the solenoid case; The bracket has a recess formed on a surface facing the opposite side to the side where the solenoid case is open, the recess being open on one side in the circumferential direction. The anti-rotation portion is disposed within the recess. Solenoid valve.

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