JP4627115B2 - Solenoid valve - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a solenoid valve suitably used for various fluid pressure controls and the like.
[0002]
[Prior art]
Conventionally, as this type of solenoid valve, for example, there is one shown in FIG. FIG. 7 is a schematic cross-sectional view of a conventional solenoid valve.
[0003]
The solenoid valve 200 includes a solenoid part 200A and a valve part 200B.
[0004]
Here, since the valve portion 200B is a spool valve, and the opening area of the valve changes according to the stroke of the spool, the inflow amount and the outflow amount of the fluid can be controlled by controlling the stroke amount of the spool with a solenoid. It has become.
[0005]
The solenoid part 200A generally transmits the coil 203, the plunger 201 that is magnetically attracted to the center post 202 by energizing the coil 203, and the drive of the plunger 201 to the valve part 200B (specifically, a spool). A rod 204 connected to the plunger 201, a case member 208 in which various solenoid constituent members are incorporated, and a connector 211 for supplying power to the coil 203.
[0006]
Further, a first bearing 205 and a second bearing 210 for increasing the coaxiality of the reciprocating plunger 201 and the rod 204 are provided, and the rod 204 fitted to the plunger 201 is supported by the bearings 205 and 210. One bearing 205 is held by a sleeve 206. The other bearing 210 is held by the center post 202. In addition, an upper plate 207 that forms a magnetic path is provided.
[0007]
Here, the plunger 201 is configured to be positioned in a direction away from the center post 202 in a normal state, that is, in a state where the coil 203 is not energized.
[0008]
In general, the plunger 201 is biased in a direction away from the center post 202 by a biasing member such as a spring. In the illustrated example, the plunger is configured to be separated from the center post 202 via the spool by providing a spring that biases the spool in the direction of the solenoid portion 200A.
[0009]
When the coil 203 is energized, a magnetic path is formed, and the plunger 201 is magnetically attracted to the center post 202.
[0010]
Therefore, the magnetic force can be controlled by the magnitude of the current flowing through the coil 203, and the stroke amount of the spool can be controlled by controlling the movement amount of the plunger 201, thereby controlling the flow rate of the fluid. In addition, various fluid pressure controls such as hydraulic control can be performed.
[0011]
Here, in the solenoid valve 200 according to the prior art, various solenoid constituent members including the plunger 201 and the center post 202 are provided in the hollow inside of the substantially cylindrical case member 208 according to the shape of each member. After being assembled appropriately from both ends, the end portion of the upper plate 207 is caulked by a caulking portion 208a provided on one end side of the case member 208, and further, the caulking portion 208b provided on the other end side is caulked. Assembling is performed by caulking the ends (however, the caulking portion 208a is not always the first in the caulking order).
[0012]
By the way, in the case where the connector 211 is of a type arranged in a part in the circumferential direction at the rear end of the solenoid valve body as in the solenoid valve 200 according to the prior art shown in FIG. Since the positional relationship with the bracket 212 for mounting at a predetermined mounting location must be changed according to the mounting location, there is a disadvantage that the compatibility is poor.
[0013]
Therefore, in order to improve compatibility, as shown in FIG. 8, a connector 311 in which the connector 311 protrudes from one end side of the case member 308 at the rear end portion of the main body of the solenoid valve 300 is known. Yes.
[0014]
In this case, since the connector 311 protrudes outward from one end of the case member 308 and the connector 311 is on the axis, it is not necessary to consider the positional relationship with the bracket or the like, and the compatibility is excellent. Is.
[0015]
In the case of this type, a step portion 311a is formed in the connector 311 formed by insert molding of the connector terminal, and the caulking portion 311a provided at one end of the case member 308 is caulked to the step portion 311a. I was assembling.
[0016]
[Problems to be solved by the invention]
However, in the case of the prior art as described above, the following problems have occurred.
[0017]
As described above, in the case of the solenoid valve according to the prior art, since various solenoid constituent members must be assembled from both sides with respect to the case member 208, the case member 208 must be properly reversed during the assembly process. Therefore, an increase in the number of assembling steps and a complicated assembly work were caused.
[0018]
Moreover, since various solenoid components must be assembled from both sides, a caulking process is required at two locations on both sides in order to fix the various components.
[0019]
When assembling the seal ring on the inner periphery of the case member, if the seal ring is in sliding contact with the inner periphery of the case member for a long time, the seal ring is worn or the seal ring is twisted. There is also a demand that such a situation must be prevented because there is a risk that the mounting state of the device may deteriorate and the sealing performance may deteriorate.
[0020]
Further, in the inner peripheral portion of the case, the inner diameter accuracy and the surface condition accuracy are required for the portion where the above-described seal ring abuts and the portion where the outer periphery of the upper plate serving as the magnetic flux supply portion abuts.
[0021]
Further, in the configuration of the solenoid valve according to the prior art as shown in FIG. 8, since a caulking load is applied to the resin material among the solenoid constituent members, deformation is likely to occur, which also deteriorates the positioning accuracy between the members. Was the cause.
[0022]
Therefore, in the case of the solenoid valve 300 shown in FIG. 8, the burden of the resin material to which the caulking load is applied must be sufficiently considered, and the wall thickness L0 from the groove where the seal member O is mounted to the end surface is sufficiently large. Had to do.
[0023]
The present invention has been made to solve the above-described problems of the prior art, and its object is to improve the assembly workability and to make it possible to reduce the burden on each component during assembly. The object is to provide a solenoid valve with excellent performance.
[0024]
[Means for Solving the Problems]
In order to achieve the above object, in the present invention, a substantially cylindrical case member having a bent portion bent inward on one end side, and inserted into the hollow interior from the other end side of the case member A connector member having a step portion positioned at the bent portion and having a connector portion protruding to the outside from one end side of the case member; and after the connector member is inserted, the case member A solenoid valve comprising: various solenoid components inserted into the hollow interior from the other end side; and a valve attached after the various solenoid components are inserted, the valve at the other end of the case member The caulking projection for assembling the valve and the various solenoid components with the valve mounted But Establishment The solenoid valve is provided with a seal ring that is in close contact with and seals the inner peripheral surface of the case on one end side of the case, and the case is on one end side of the case and is in close contact with the seal ring. A region including the portion is a small diameter portion, and the other end side of the small diameter portion of the case is a large diameter portion that does not contact the outer peripheral surface of the seal ring. It is characterized by that.
[0025]
Therefore, all the solenoid constituent members need only be assembled from the other end side of the case member, and a process such as reversing the case member during the assembling process is not necessary, and only one location is required. In addition, since the connector portion has a structure projecting outward from one end side of the case member, the compatibility is excellent because there is a degree of freedom in the arrangement relationship in the rotation direction as compared with the case member provided with the connector on the outer peripheral surface. Further, since the caulking is performed only on the other end side of the case member, the load load during caulking on the connector member disposed on the one end side is small.
[0027]
Also, During assembly of the connector member, the large diameter portion of the case does not contact the seal ring. Moreover, the part (small diameter part) by which the precision with which a seal ring is closely_contact | adhered is requested | required can be limited to a part. That is, it is not necessary to increase the dimensional accuracy and the like for the entire case member, and it is only necessary to make the large diameter portion rough and increase the accuracy only for the small diameter portion.
[0028]
A bracket plate for attaching a solenoid valve body to another element, and a bracket plate formed integrally with a plate on the valve side that forms a magnetic path between the case member and the solenoid component member;
The bracket plate is in a state where one end of the valve is in contact with one surface thereof, and a part of the edge on the other end side of the case member is in contact with the other surface,
Assembling is performed by sandwiching and fixing the bracket plate and one end of the valve with the caulking protrusion and a part of the edge on the other end side of the case member,
The solenoid component includes an upper plate having one end abutting against the inner peripheral surface of the case and forming a magnetic path, and one end of the upper plate contacts the inner peripheral surface of the small diameter portion of the case. It is good to touch.
[0029]
Here, “molded integrally” means that a plurality of parts (in this case, a bracket and a plate) are joined to one member by welding, caulking, or uneven fitting, or one member (for example, one A form formed from a single sheet of steel) into one part by pressing or the like.
[0030]
Thus, the caulking load when caulking is applied only to the plate, one end of the valve, and the case member. In addition, the portion with which the upper plate is in contact is in contact with a portion (small diameter portion) that is limited to a part and requires relatively high accuracy. Thereby, it is not necessary to improve the dimensional accuracy and the like for the entire case member, and it is only necessary to make the large diameter portion rough and increase the accuracy only for the small diameter portion.
[0031]
DETAILED DESCRIPTION OF THE INVENTION
Exemplary embodiments of the present invention will be described in detail below with reference to the drawings. However, the dimensions, materials, shapes, relative arrangements, and the like of the components described in this embodiment are not intended to limit the scope of the present invention only to those unless otherwise specified. Absent.
[0032]
A solenoid valve according to an embodiment of the present invention will be described with reference to FIGS. First, an overview of the entire solenoid valve according to the present embodiment will be described with reference to FIGS. 1 and 2. FIG. 1 is a schematic sectional view of a solenoid valve according to an embodiment of the present invention. FIG. 2 is a schematic sectional view of a solenoid valve according to the embodiment of the present invention. (B) is an overview diagram viewed from the P direction in (A), and (C) is an overview diagram viewed from the Q direction in (A).
[0033]
The solenoid valve 100 includes a solenoid part 100A and a valve part 100B.
[0034]
Here, the valve portion 100B is a spool valve, and a spool 15 is provided in a valve sleeve 16 serving as a valve portion main body so as to be capable of reciprocating. A valve formed on the valve sleeve 16 according to the stroke of the spool 15 is provided. Therefore, the fluid inflow and outflow can be controlled by controlling the stroke amount of the spool 15 with a solenoid.
[0035]
The solenoid part 100A is generally magnetically attracted to the center post 2 by energizing the coil 3 and the connector member 17 in which a terminal 17a electrically connected to supply power to the coil 3 is insert-molded. A plunger 1 connected to the plunger 1 to transmit the drive of the plunger 1 to the spool 15, and a case member 9 for incorporating various solenoid components (the coil 3, the center post 2, etc.) It is equipped with.
[0036]
In addition, a sleeve 4 serving as a bearing for the plunger 1, a bobbin 6 around which the coil 3 is wound, a shim 8 for facilitating the separation of the plunger 1 from the center post 2, and fluid flow from the inside of the valve portion 100 </ b> B toward the coil 3 A packing 10 for preventing leakage, an upper plate 11 for forming a magnetic path, and a bracket plate 12 for forming the magnetic path and fixing the solenoid valve body at a predetermined position (other components) are provided. Yes.
[0037]
Further, the bearing 13 of the rod 7 and the spring 14 that urges the plunger 1 in the direction of separating from the center post 2 through the rod 7 together with the spool 15 by urging the E-shaped ring 18 fixed to the spool 15. It is equipped with.
[0038]
The coil 3 and the bobbin 6 are made assy by molding to constitute a molded coil sub assembly 5.
[0039]
Here, the plunger 1 is configured to be positioned in a direction away from the center post 2 in the normal state, that is, in a state where the coil 3 is not energized. That is, in the present embodiment, the spool 1 is spooled as described above. The plunger 1 is separated from the center post 2 by urging 15 in the direction of the solenoid part 100 </ b> A via the E-shaped ring 18.
[0040]
When the coil 3 is energized, the coil 3 generates a magnetic field, and a magnetic path (magnetic path formed by the case 9, the upper plate 11, the plunger 1, the center post 2, and the bracket plate 12) is formed. 1 is magnetically attracted to the center post 2.
[0041]
Accordingly, the magnetic force can be controlled by the magnitude of the current flowing through the coil 3, and the stroke amount of the spool 15 can be controlled by controlling the movement amount of the plunger 1, thereby controlling the flow rate of the fluid. In addition, various fluid pressure controls such as hydraulic control can be performed.
[0042]
Next, the assembly structure of the solenoid valve according to the present embodiment will be described.
[0043]
In the case of the solenoid valve 100 according to the present embodiment, the connector member 17 is on the axial center in order to make the arrangement relationship with the bracket irrelevant to the circumferential direction in order to achieve excellent compatibility. In this way, the case member 9 has a structure protruding from one end side (rear end side) to the outside.
[0044]
Here, the case member 9 has a substantially cylindrical shape, and has a bent portion 93 bent inward on one end side.
[0045]
On the other hand, the connector member 17 has a stepped portion 17b having a diameter larger than the portion protruding to the outside. When the connector member 17 is inserted from the opening on the other end side of the case member 9, the stepped portion 17b becomes the bent portion 93. It is comprised so that it may be hooked and positioned.
[0046]
After inserting the connector member 17 in this manner, the dimensions and shapes of the respective constituent members are set so that all of the various solenoid constituent members can be sequentially inserted from the opening on the other end side of the case member 9. Then, for example, the molded coil sub assembly 5, the sleeve 4, the plunger 1 and the rod 7 are assembled in advance, and the packing 10, the shim 8, the center post 2, the bearing 13 and the bracket plate 12 are assembled in advance. Install the correct one.
[0047]
Here, the case member 9 is provided with a caulking projection 94 at the end opposite to the bent portion 93 described above. FIG. 1 shows a state after caulking.
[0048]
And in the area | region where the protrusion 94 for this crimping is not provided, it comprises so that one surface of the bracket plate 12 may contact | abut.
[0049]
Further, when the valve portion 100B is attached after the bracket plate 12 is attached, one end 16b of the valve sleeve 16 which is a main body thereof is configured to come into contact with the other surface of the bracket plate 12.
[0050]
In this state, the caulking protrusion 94 is caulked to the stepped portion 16a which is the caulking portion of the valve sleeve 16, whereby the solenoid component member, the bracket plate 12 and the valve portion 100B are positioned and fixed, and the assembly is completed.
[0051]
This caulking process will be described in more detail with reference to FIGS.
[0052]
FIG. 3 is a schematic diagram for explaining the attachment of the case member and the bracket plate ((A) is a schematic plan view of the case member, (B) is a schematic plan view of the bracket plate, and (C) is a bracket plate on the case member) (D) is a sectional view taken along line AA in (C), FIG. 4 shows a modification of FIG. 3 ((A) is a schematic plan view of the case member, B) is a schematic plan view of the bracket plate, (C) is a schematic plan view of the case member with the bracket plate attached, (D) is a sectional view taken along the line BB in (C), and FIG. 5 is a caulking process. FIG. 6 is a schematic diagram showing a preferred embodiment of the caulking projection.
[0053]
As shown in FIG. 3A, at the end of the cylindrical case member 9, a plurality of notches (three notches in the illustrated example) are provided to caulk the portions that are not notched. This is a projection 94 for use.
[0054]
Therefore, the inner peripheral surface 94a of the caulking projection 94 has a curved surface shape.
[0055]
On the other hand, as shown in FIG. 3B, the bracket plate 12 is formed with a plurality of (three in the illustrated example) notch grooves corresponding to the caulking projections 94 to form an outer peripheral surface. The groove bottom 12a of the cutout groove has a curved shape that follows the curved shape of the inner peripheral surface 94a of the caulking projection 94 described above.
[0056]
Therefore, as shown in FIGS. 3C and 3D, when the caulking projection 94 is fitted into the notch groove of the bracket plate 12, the inner peripheral surface 94a of the caulking projection 94 and the bracket plate 12 are fitted. The outer peripheral surface (the portion of the groove bottom 12a) is in a state where the entire surface is in contact.
[0057]
Although not particularly illustrated, at least a part of the outer peripheral surface of the stepped portion 16a that is the caulking portion of the valve sleeve 16 is set to follow the curved shape of the inner peripheral surface 94a of the caulking projection 94 described above. Similarly, the entire surface is abutted.
[0058]
Thus, by caulking with the curved inner peripheral surface 94a of the caulking projection 94 in contact with at least part of the outer peripheral surface of the bracket plate 12 and the valve sleeve 16, The backlash in the radial direction of the bracket plate 12 and the valve sleeve 16 with respect to the case member 9 can be prevented (prevention of misalignment), and the lateral force acting on the plunger 1 is increased by the eccentricity of the center post 2 integrated with the bracket plate 12. It is possible to prevent this from happening, thereby reducing the hysteresis.
[0059]
Further, when the bracket plate 12 is attached to another element (an apparatus to which the solenoid valve 100 is attached), the positional accuracy between the other elements and the center position of the solenoid valve 100 can be improved.
[0060]
In the illustrated example, the end of the spool 15 has a spherical shape, and this portion is in contact with the rod 7, so that even if there is an inclination between the solenoid portion 100A and the valve portion 100B, Thus, the hysteresis can be further reduced.
[0061]
In the example shown in the figure, the caulking projections 94 are provided at three equal positions, so that when caulking is performed, the caulking force acts equally toward the center direction, thereby reducing the axial deviation. Can do.
[0062]
In the example shown in FIG. 3, the case where the entire wall of the portion not provided with the notch is used as the caulking protrusion 94 at the end of the cylindrical case member 9 is shown in FIG. As described above, only the outer peripheral side of the cylinder can be used as the caulking protrusion 94, and the contact surface 94b with which the bracket plate 12 is contacted can be left on the inner peripheral side.
[0063]
Next, the behavior of the caulking jig (die) and the caulking projection during caulking will be described with reference to FIG.
[0064]
FIG. 5 shows a partial cross-sectional view of a jig (mold) for caulking, and a partial cross-sectional view of each of the step portions 16 a that are caulked portions of the case member 9, the bracket plate 12, and the valve sleeve 16. (A) shows the state at the start of caulking, and (B) shows the state at the end of caulking.
[0065]
As shown in the figure, the mold 500 for caulking is provided with an abutting surface 501 for abutting the tip of the caulking projection 94 and bending the caulking projection 94. The contact surface 501 is inclined in a curved surface shape.
[0066]
When caulking is performed, the mold 500 is driven in the direction of arrow X in FIG. 5A with the bracket plate 12 and the valve sleeve 16 assembled.
[0067]
As a result, first, the contact surface 501 contacts the tip of the caulking projection 94 and is further driven in the X direction so that the tip of the caulking projection 94 is connected to the bracket plate 12 side by the contact surface 501. Each receives a component force on the inner diameter side.
[0068]
Accordingly, the caulking projection 94 is bent inward as indicated by an arrow in FIG.
[0069]
In this case, since the caulking projection 94 is first defined by the first corner portion 16c provided in the step portion 16a which is the caulking portion of the valve sleeve 16, the first corner portion is defined. Bend around 16c.
[0070]
Then, when further bent, the tip of the caulking projection 94 comes into contact with the second corner portion 16d provided in the step portion 16a that is the caulking portion of the valve sleeve 16, and the second corner portion 16d is pushed in, while the tip of the caulking projection 94 is pushed. The sleeve 16 bends to a position where it abuts against an inclined surface provided in the stepped portion 16a which is a caulking portion of the sleeve 16.
[0071]
Thus, by providing the first corner portion 16c, the bending position of the caulking projection 94 can be defined, and by providing the second corner portion 16d, the bracket plate 12 can be formed by the caulking projection 94. Since it is actively pushed toward the side, sufficient caulking fixing force can be obtained.
[0072]
In general, when caulking is performed, a springback occurs in which the tip of the caulking portion returns to its original position due to its own elastic restoring force.
[0073]
That is, in the state shown in FIG. 5B, the tip of the caulking projection 94 is in contact with the inclined surface provided on the stepped portion 16a of the valve sleeve 16, but thereafter, due to its own elastic restoring force. A spring back is generated, and the tip of the spring back is slightly returned to a position away from the inclined surface.
[0074]
However, in the present embodiment, even if the tip is separated, the second corner portion 16d remains pressed, so that a sufficient caulking fixing force is maintained.
[0075]
From the above, the configuration of the present embodiment makes it possible to obtain a sufficient caulking fixing force even if the caulking load is relatively lowered.
[0076]
Here, as shown in FIG. 6, as a suitable example of the caulking projection 94, a groove 94c may be provided. At this time, the depth of the groove bottom of the groove 94c is close to (or equal to or slightly deeper than) the position of the first corner of the stepped portion 16a that is the caulked portion of the valve sleeve 16. Thus, when caulking is performed, the caulking protrusion 94 has low rigidity, and thus is easily bent from the vicinity of the groove bottom of the groove 94c, thereby preventing the bulging of the caulking protrusion 94 near the base. be able to.
[0077]
As described above, when assembling work is performed, various members need only be inserted or attached to the case member 9 in only one direction. In addition, since the process of reversing the case member is unnecessary, the number of assembly steps can be reduced and the complexity of the assembly work can be eliminated. Further, it is only necessary to perform caulking at one place.
[0078]
Further, by performing caulking as described above, the valve sleeve 16 and the bracket plate 12 are clamped and fixed between the one end of the valve sleeve 16 and the bracket plate 12 by the caulking projection 94 and the edge of the case member 9. The plate 12 is positioned and fixed, the connector member 17 is positioned with respect to the bent portion 93 as described above, and other solenoid components are confined by the connector member 17 and the bracket plate 12. Positioning is fixed.
[0079]
Here, at the time of caulking, a caulking load is applied to one end of the valve sleeve 16 by the caulking projection 94, and this load is transmitted to the bracket plate 12. Since the opposite surface is in contact with the edge of the case member 9, only the case member 9 receives a load, and the other solenoid components contained in the case member 9 do not receive a caulking load.
[0080]
Therefore, the burden considering the caulking load of various solenoid constituent members is eliminated, and the burden when designing the dimensional shape of each constituent member is reduced.
[0081]
In particular, when caulking the end portion on the connector member side of the case member as in the prior art, as described above, the wall from the groove for mounting the sealing member of the mold portion made of resin to the end face is used. While the thickness has to be increased sufficiently, the present embodiment does not receive a caulking load, so this thickness (L1 in FIG. 1) can be reduced.
[0082]
Accordingly, the axial dimension can be reduced, and the weight and size can be reduced.
[0083]
Further, in the solenoid valve 100 according to the present embodiment, the case member 9 is composed of a small diameter portion 91 and a large diameter portion 92, and this point will be described.
[0084]
First, in the small diameter portion 91, an O-ring 19 that is a seal member (seal ring) is in close contact with an inner peripheral surface thereof, and an end surface of the upper plate 11 is brought into contact, and a magnetic path is formed between the upper diameter plate 91 and the upper plate 11. In order to form, it is a part with a comparatively large request | requirement of the precision of an internal diameter and the surface condition. In this case, the structure of the upper plate 11 is formed by a cylindrical portion and a flange portion in which one end side of the cylindrical portion is bent in the radial direction, and this end surface refers to the outer peripheral surface of the distal end of the flange portion. Yes.
[0085]
On the other hand, the large-diameter portion 92 is a portion that requires relatively little inner diameter accuracy and the like. The packing 10 is also in close contact with the inner peripheral surface of the large-diameter portion 92. The packing 10 has a structure that can sufficiently exhibit a sealing property against dimensional variations. Description of is omitted.
[0086]
Thus, it becomes possible to reduce a manufacturing burden by reducing the part for which dimensional accuracy is required.
[0087]
In addition, by setting the inner diameter of the large-diameter portion 92 to such a size that the outer peripheral surface of the O-ring 19 does not come into contact, it is possible to prevent the quality of the O-ring 19 from deteriorating.
[0088]
That is, when assembling as described above, the connector member 17 is inserted from the opening on the other end side of the case member 9, but the O-ring 19 is mounted in the mounting groove of the connector member 17. Since the insertion operation is performed in the state, the inner diameter of the large-diameter portion 92 on the insertion side is set as described above, so that the large O-ring 19 can reach the small-diameter portion 91 during insertion. Since it can be prevented from rubbing against the inner peripheral surface of the diameter portion 92, the quality of the O-ring 19 can be prevented from being deteriorated.
[0089]
Next, a preferred application example of the solenoid valve 100 according to the present embodiment will be described.
[0090]
In engines such as automobiles, the intake / exhaust valves of the engine are opened and closed by rotating the camshaft. However, the fuel efficiency is improved by controlling the valve timing appropriately according to the operating conditions (high speed and low speed). It becomes possible to obtain exhaust gas purification.
[0091]
This valve timing control can be performed by shifting the camshaft in the rotational direction and changing the phase, and a technique of performing this by a solenoid valve is known as a known technique.
[0092]
Here, in order to shift the camshaft in the rotational direction, hydraulic control by a solenoid valve is performed. However, due to the arrangement space and the like, a solenoid valve is installed on the path of the engine oil flow path, It is common to use it.
[0093]
Conventionally, by using a solenoid valve that performs on / off control, control has been performed in two types of states at high speed and low speed, but in recent years linear control has been performed in order to perform more precise control. Possible solenoid valves are used.
[0094]
Therefore, the solenoid valve according to the embodiment of the present invention described above can be suitably used as such a linear control solenoid valve for valve timing control (VTC).
[0095]
【The invention's effect】
As described above, according to the present invention, all the members can be assembled in one direction with respect to the case member, and it is only necessary to perform caulking at one place. Since work complexity can be eliminated, assembly workability is improved.
[0096]
In addition, the compatibility is excellent, and the load on the connector member when caulking is small.
[0097]
In addition, the case is divided into a small diameter portion and a large diameter portion that are closely attached by a seal ring. Because we adopt composition In addition, it is possible to prevent the outer periphery of the seal ring from rubbing against the inner periphery of the large-diameter portion of the case at the time of assembly, and to prevent deterioration in the quality of the seal ring.
[0098]
Also, if the caulking projection and a part of the edge on the other end side of the case member are clamped and fixed between the bracket plate and one end of the valve, the positioning and fixing of each member is performed. It is possible to prevent a caulking load from being applied when caulking to various members included in the case member. Furthermore, the part for which dimensional accuracy is required can be limited to a part by abutting one end of the upper plate with the inner peripheral surface of the small diameter portion of the case.
[Brief description of the drawings]
FIG. 1 is a schematic sectional view of a solenoid valve according to an embodiment of the present invention.
FIG. 2 is a schematic configuration diagram of a solenoid valve according to an embodiment of the present invention.
FIG. 3 is a schematic diagram illustrating attachment of a case member and a bracket plate.
4 is a schematic diagram showing a modification of FIG. 3. FIG.
FIG. 5 is a schematic view showing a caulking step.
FIG. 6 is a schematic view showing a preferred embodiment of a caulking projection.
FIG. 7 is a schematic sectional view of a solenoid valve according to the prior art.
FIG. 8 is a part of a schematic sectional view of a solenoid valve according to the prior art.
[Explanation of symbols]
1 Plunger
2 Center post
3 coils
4 Sleeve
5 Molded coil sub assembly
6 Bobbins
7 Rod
8 Sim
9 Case material
91 Small diameter part
92 Large diameter part
93 Bending part
94 protrusion
94a (projection) inner surface
94b Contact surface
94c groove
10 Packing
11 Upper plate
12 Bracket plate
12a Groove bottom
13 Bearing
14 Spring
15 spool
16 Valve sleeve
16a Step part
16b (one end of valve sleeve)
16c first corner
16d second corner
17 Connector member
17a terminal
17b Stepped part
18 E-ring
19 Seal ring
100 Solenoid valve
100A Solenoid part
100B Valve part
500 mold
501 Contact surface

Claims (2)

A substantially cylindrical case member having a bent portion bent inward on one end side;
A connector member that is inserted into the hollow interior from the other end side of the case member, has a stepped portion that is positioned at the bent portion, and has a connector portion that protrudes outward from one end side of the case member;
After the connector member is inserted, various solenoid constituent members that are sequentially inserted into the hollow interior from the other end side of the case member,
A solenoid valve provided with a valve attached after these various solenoid components are inserted,
The other end of the case member, in a state in which the valve is mounted, the solenoid valve caulking projection of assembling the valve and the solenoids constituting member is provided,
On one end side of the case, provided with a seal ring that adheres and seals to the inner peripheral surface of the case,
The case has a small diameter portion on one end side of the case and including a portion that is in close contact with the seal ring, and the other end side of the small diameter portion of the case is in contact with the outer peripheral surface of the seal ring. Solenoid valve characterized by having a large diameter part that does not cause A bracket plate for attaching a solenoid valve body to another element, and a bracket plate formed integrally with a plate on the valve side that forms a magnetic path between the case member and the solenoid component member;
The bracket plate is in a state where one end of the valve is in contact with one surface thereof, and a part of the edge on the other end side of the case member is in contact with the other surface,
Assembling is performed by sandwiching and fixing the bracket plate and one end of the valve with the caulking protrusion and a part of the edge on the other end side of the case member,
The solenoid component includes an upper plate having one end abutting against the inner peripheral surface of the case and forming a magnetic path, and one end of the upper plate contacts the inner peripheral surface of the small diameter portion of the case. The solenoid valve according to claim 1 , wherein the solenoid valve is in contact with the solenoid valve.

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