JPH08233143A - solenoid valve - Google Patents

Abstract

(57) [Abstract] [Purpose] The solenoid assembly and the main body member can be fixed by a simple assembling work in which the convex portion of the solenoid assembly is fitted in the concave portion of the main body member in the axial direction. What you get. [Structure] The fitting surface 18A is formed in the recess 18 of the main body member 14.
Is projected inward in the radial direction to project the radial projections 25A, ..., 25
In the convex portion 3 of the solenoid assembly 1, the fitting surface 3A is annularly recessed inward in the radial direction to form a radial concave portion 24.
Are provided so that they can be engaged with each other. Radial convex portion 25
25D has a gap X between the main body member 14 and the radial direction outward so as to expand outward in the radial direction by sliding contact with the fitting surface 3A of the convex portion 3. It is provided so as to restore from the expanded state by its own elastic force by engaging with 24.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a solenoid valve having a solenoid assembly fixed to a main body member.

[0002]

2. Description of the Related Art Conventionally, as a solenoid valve of this type, it has been fair and fair.
There is one such as shown in FIGS. As shown in FIG. 7 (A), this one has a recess 36 in a main body member 35 and two L-shaped grooves 37 facing the inner peripheral surface of the recess 36, and a solenoid assembly 38 has a circular shape. The columnar convex portion 39 and two protrusions 40 are provided on the circumference of the convex portion 39 in opposite directions. Then, in order to fix the solenoid assembly 38 to the main body member 35, the convex portion 39 is fitted in the concave portion 36, and the projection 40 is inserted and rotated along the groove 37, after which, as shown in FIG. Like,
It is provided so as to be fixed and integrated by a fixing plate 43 including a stopper 41 and a screw 42.

[0003]

However, in the solenoid valve having such a structure, the work of fitting the projection 39 in the recess 36 in the axial direction, the work of inserting and rotating the projection 40 along the groove 37, and the screw 42. Therefore, it is necessary to attach the stopper 43 to the main body member 3 by using the solenoid assembly 38.
There was a problem that the assembling work for fixing to 5 became troublesome. The present invention solves such a problem, and the solenoid assembly and the main body member can be fixed by a simple assembling work in which the convex portion is fitted in the concave portion in the axial direction, so that the assembling property can be improved. It is intended to provide a solenoid valve.

[0004]

Therefore, according to the present invention, the solenoid assembly has a projection protruding from the axial end of the main body, and the main body has a recess for fitting the projection of the solenoid assembly. The convex portion and the concave portion have a radial convex portion projecting in a radial direction on one of the fitting surfaces thereof and a radial concave portion on the other side of the fitting surface so that the radial concave portions can be engaged with each other. One of the convex portion and the concave portion is provided so as to be expandable / contractible in the radial direction by sliding contact with the other fitting surface of the radial convex portion provided on one fitting surface.

[0005]

In the above structure of the present invention, the convex portion of the solenoid assembly is axially fitted in the concave portion of the main body member, and the radial convex portion on one fitting surface and the other fitting surface slide against each other. Upon contact, either one of the convex portion and the concave portion expands or contracts in the radial direction by this sliding contact, and allows the convex portion to subsequently enter the concave portion in the axial direction. When the radial convex portion and the radial concave portion face each other due to the axial entry of the convex portion into the concave portion, the sliding contact between the radial convex portion and the other fitting surface is released, and the radial enlargement or reduction is performed. Either one of the convex portion and the concave portion that has been performed is restored, and by this restoration, the radial convex portion and the radial concave portion are engaged with each other to fix the solenoid assembly to the main body member. Therefore, the solenoid assembly and the main body member can be reliably fixed by an extremely simple assembling work of fitting the convex portion in the concave portion in the axial direction, and the assembling property can be improved.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to the drawings. In FIGS. 1 and 2, reference numeral 1 denotes a solenoid assembly, which has a cylindrical convex portion 3 having a smaller diameter than that of the main body portion 2 and protruding from the lower end of the cylindrical main body portion 2 in the axial direction. The main body 2 of the solenoid assembly 1 is provided with a fixed iron core 6 fixed to a bobbin member 5 around which a coil 4 is wound, and a movable iron core 7 attracted to the fixed iron core 6 by an electromagnetic force generated by energizing the coil 4. The movable iron core 7 is provided so as to be movable in the axial direction,
A sheet member 8 made of an elastic material is fixed to the lower end surface of the sheet member 8 extending in the axial direction so as to penetrate therethrough. Reference numeral 12 is a spring housed in the convex portion 3, and the movable iron core 7 is urged in the direction away from the fixed iron core 6. Reference numeral 9 denotes an outer shell member formed of a magnetic material that constitutes the main body 2 of the solenoid assembly 1, and is provided in a cylindrical shape that closes the upper side and opens the lower side, covers the bobbin member 5 and the fixed iron core 6, and The base of the yoke member 10 forming the convex portion 3 is inserted into the opening and fixed by caulking. Reference numeral 11 denotes an electrical connection pin provided on the upper end of the main body 2 in the axial direction, and is provided to electrically connect the lead wire of the coil 4 to an external power source. Reference numeral 13 is a stop portion provided by bending a part of the outer shell member 9 outward in the radial direction.

Reference numeral 14 denotes a main body member for fixing the solenoid assembly 1, which is constituted by fixing a first main body member 15 and a second main body member 16 made of a resin material, and the main body portion 2 of the solenoid assembly 1 is formed. A housing hole 17 for housing and a recess 18 for fitting the projection 3 of the solenoid assembly 1 are continuously provided, and the housing hole 1
7 is provided so as to open at one end face above the first main body member 15. The second main body member 16 includes a seat member 8 of the movable iron core 7.
A flow path 2 for the fluid that forms a valve seat 19 on which the
0 and the outflow path 21. Reference numeral 22 denotes an axial positioning portion provided on the lower surface of the concave portion 18 so as to project three circumferentially at equal intervals.
By fitting the convex portion 3 into the concave portion 18, the tip end of the convex portion 3 is brought into contact with the concave portion 18 to set the axial position of the solenoid valve 1. 23 is the first
The main body member 15 is provided in a radially outward direction of the housing hole 17 and is a recess formed by recessing from one end face where the housing hole 17 is opened, and the stopper portion 13 of the solenoid assembly 1 is inserted therein. . Reference numeral 26 is a seal member that seals between the first main body member 15 and the second main body member 16.

In the convex portion 3 of the solenoid assembly 1, the fitting surface 3A is depressed inward in the radial direction in an annular shape, and the radial concave portion 2 is formed.
Four. In the concave portion 18 of the main body member 14, the fitting surface 18A is projected inward in the radial direction so as to be engageable with the radial concave portion 24, and four radial convex portions 25A, 25 are arranged at equal intervals in the circumferential direction.
It has B, 25C, and 25D. , 25D provided in the concave portion 18 are arranged radially outwardly between the main body member 14 and the radial convex portions 25A, ..., 25D so as to expand outward in the radial direction by sliding contact with the fitting surface 3A of the convex portion 3. It has a gap X and is provided so as to be restored from its expanded state by its own elastic force by engagement with the radial concave portion 24 provided in the convex portion 3. Further, the tip end of the convex portion 3 is formed in a taper shape, and the axial upper ends of the radial convex portions 25A, ..., 25D are formed in a taper shape corresponding to the shape of the tip end of the convex portion 3, and the radial convex portion 25A, ..., 25D is provided so that it can be easily enlarged.

Next, the operation of this structure will be described. The state of FIG. 1 shows a state where the coil 4 is not energized, the movable iron core 7 is separated from the fixed iron core 6 by the force of the spring 12, and the sheet member 8
Sits on the valve seat 19 and blocks the inflow / outflow passages 20 and 21. When the coil 4 is energized from this state, the movable iron core 7 is attracted to the fixed iron core 6 against the force of the spring 12, the seat member 8 is separated from the valve seat 19, and the inflow / outflow passages 20 and 21.
Communicate between the two. When the coil 4 is de-energized, the movable iron core 7 is returned to the state of FIG. 1 by the force of the spring 12.

Next, the solenoid assembly 1 is attached to the main body member 14
In order to fix it to the above, the convex portion 3 is axially fitted into the concave portion 18 while the stopper portion 13 of the solenoid assembly 1 is inserted into the concave portion 23 of the main body member 14, and the radial convex portion 25 provided in the concave portion 18 is provided.
, 25D and the fitting surface 3A of the convex portion 3 are brought into sliding contact with each other, this sliding contact causes the radial convex portions 25A, ..., 25D of the concave portion 18 to expand outward in the radial direction and to the concave portion 18 thereafter. The projection 3 is allowed to enter in the axial direction. 25D and the radial concave portion 24 provided in the convex portion 3 face each other when the convex portion 3 enters the concave portion 18 in the axial direction, the radial convex portion 25.
25D, the sliding contact between the fitting surface 3A and the radial direction convex portion 25A of the concave portion 18 that has expanded outward in the radial direction,
25D is restored by its own elastic force, and by this restoration, the radial convex portions 25A, ..., 25D and the radial concave portion 24 are engaged with each other to fix the solenoid assembly 1 to the main body member 14. The axial position of the solenoid assembly 1 is accurately set by abutting the tip of the convex portion 3 on the axial positioning portion 22, and the circumferential position of the solenoid assembly 1 is such that the stopper 13 is inserted into the recess 23. And set correctly. The main body member 1
The solenoid assembly 1 fixed to No. 4 is to be newly replaced together with the main body member 14 within a certain period of use.
Removal from 4 is impossible. Therefore, the body member 14
The solenoid assembly 1 can be mounted by a very simple assembling work in which the projection 3 of the solenoid assembly 1 is fitted in the recess 18 of the shaft in the axial direction.
The main body member 14 and the main body member 14 can be securely fixed, and the assemblability can be improved, which is particularly effective when assembling a large number of solenoid assemblies 1. In addition, the concave portion 1 of the body member 14
25D by axially fitting the convex portion 3 of the solenoid assembly 1 to the radial convex portion 25A, ..., 25D provided in the concave portion 18 and the radial concave portion 24 provided in the convex portion 3 are engaged. Since the solenoid assembly 1 can be fixed to the main body member 14, it is possible to eliminate the conventional fixing plate composed of stoppers and screws, reduce the number of parts, and simplify the structure. Furthermore, since the concave portion 18 of the main body member 14 is divided into four at equal intervals in the circumferential direction and has radial convex portions 25A, ..., 25D, the convex portions 3 of the radial convex portions 25A ,. The sliding contact with the fitting surface 3A allows the expansion to be easily expanded outward in the radial direction.

FIG. 3 shows a second embodiment of the present invention. Explaining only parts different from the first embodiment, the main body member 1 will be described.
The radial convex portion 27 provided in the concave portion 18 of No. 4 has a fitting surface 18A.
Has a rigidity by being formed in a taper shape in which the diameter is gradually reduced toward the tip so as to project inward in the radial direction. The convex portion 3 of the solenoid assembly 1 is divided into four fitting faces 3A, 3B, ... By dividing the tip side into four circumferentially at equal intervals, and the four fitting faces 3A, 3B ,. Are recessed inward in the direction, and four radial recesses 28A, 28B, ... Are provided at equal intervals in the circumferential direction. Further, the tip side of the convex portion 3 divided into four is the fitting surfaces 3A and 3A.
B, ... has a gap Y between the movable core 7 and the movable iron core 7 inward in the radial direction so as to reduce inward in the radial direction by sliding contact with the radial convex portion 27. It is provided so as to be restored by its own elastic force from the contracted state by engaging with the recesses 28A, 28B, ....

In order to fix the solenoid assembly 1 to the main body member 14, when the convex portion 3 is axially fitted in the concave portion 18 and the radial convex portion 27 and the fitting surfaces 3A, 3B, ... By the sliding contact, the tip end side of the convex portion 3 is contracted inward in the radial direction to allow the convex portion 3 to enter the concave portion 18 in the axial direction thereafter.
When 7 and the radial concave portions 28A, 28B, ... Face each other, the tip end side of the convex portion 3 which has been reduced inward in the radial direction is restored by its own elastic force, and by this restoration, the radial convex portion 27 and the radial convex portion 27 are Direction recess 2
8A, 28B, ... Engage to fix the solenoid assembly 1 to the body member 14. Therefore, as in the first embodiment, the assembling property can be improved, the number of parts can be reduced, and the structure can be simplified. Further, since the convex portion 3 of the solenoid assembly 1 is divided into four fitting surfaces 3A, 3B, ... At the tip end side in the circumferential direction at equal intervals, the fitting surfaces 3A, 3B ,. By sliding contact with the radial convex portion 27, it can be easily reduced inward in the radial direction.

FIG. 4 shows a third embodiment of the present invention. Explaining only the points different from the first embodiment, the axial direction for abutting the tip of the convex portion 3 to set the axial position of the solenoid assembly 1 will be described. The positioning portions 29A, 29B, ... Are integrally formed with the four radial convex portions 25A, 25B, ..., and the fitting surface 18A of the convex portion 18 is projected downward in the axial direction thereof inward in the radial direction. Have Then, it is possible to obtain the same operation and effect as the first embodiment.

FIG. 5 shows a fourth embodiment of the present invention. Explaining only the points different from the first embodiment, the main body member 3 will be described.
0 is provided as a single member, and a fluid outflow passage 21A is formed in parallel with the inflow passage 20. And the main body member 3
The concave portion 18 of 0 has a radial concave portion 31 formed by annularly recessing the fitting surface 18A outward in the radial direction, and also has an axial positioning portion 33 for abutting the tip of the convex portion 3 of the solenoid assembly 1. The radial concave portion 31 is continuously provided below the radial concave portion 31 and has an annular projecting inward in the radial direction. Further, the convex portion 3 of the solenoid assembly 1 is divided into four radial convex portions 32A, 32B, ... Having, radial projections 32A, 32
B, ... have a gap Y1 inward in the radial direction between the movable iron core 7 and the radial recess 31 so as to reduce inward in the radial direction by sliding contact with the fitting surface 18A of the recess 18. It is provided so as to be restored by its own elastic force from the contracted state by engagement.

To fix the solenoid assembly 1 to the main body member 30, the convex portion 3 is axially fitted in the concave portion 18, and the radial convex portions 32A, 32B, ... Of the convex portion 3 are fitted to the concave portion 18. 18
When it comes into sliding contact with A, the radial projections 32A, 32
B, ... are reduced inward in the radial direction to allow the convex portion 3 to enter the concave portion 18 in the axial direction thereafter, and the radial convex portions 32A, 32
When B, ... And the radial concave portion 31 face each other, the radial convex portions 32A, 32B, ... which have been reduced inward in the radial direction are restored by their own elastic force, and by this restoration, the radial convex portion 32A, 32
, And the radial recess 31 are engaged with each other to fix the solenoid assembly 1 to the main body member 30. Therefore, it is possible to obtain the same effect as that of the first embodiment, and further, the main body member 30.
Is composed of a single member, it is possible to further simplify the structure.

FIG. 6 shows a modification of the fourth embodiment shown in FIG. 5, and only the points different from the fourth embodiment will be described.
The axial positioning portion 34 that sets the axial position of the solenoid assembly 1 is formed at the stepped portion of the housing hole 17 of the body member 30 and the recess 18, and is located at the lower end of the body portion 2 of the solenoid valve 1 in the axial direction. Are provided in contact with each other. The radial concave portion 31 provided in the concave portion 18 is formed wide because the axial positioning portion is not continuously provided at the axial lower end thereof. Therefore, it is possible to obtain the same operation and effect as those of the fourth embodiment, and further, since the axial positioning portion 34 is formed by utilizing the continuous step portion of the housing hole 17 and the concave portion 18, It is not necessary to particularly provide an axial positioning portion, and further simplification can be achieved.

[0017]

As described above, the present invention is an electromagnetic valve in which a solenoid assembly is fixed to a main body member, and the solenoid assembly has a convex portion projecting from an axial end of the main body portion and the main body member. Has a concave portion for fitting the convex portion of the solenoid assembly, and the convex portion and the concave portion have a radial convex portion projecting in a radial direction on one of the fitting surfaces and a radial concave portion on the other of the fitting surfaces. However, it has radial recesses that can be engaged with each other, and either the protrusion or the recess is slidably in contact with the other fitting surface of the radial projection on one fitting surface Since it is expandable / contractible, the solenoid assembly and the main body member can be reliably fixed by an extremely simple assembling work of fitting the convex portion in the concave portion in the axial direction, and the assembling property can be improved. Further, since the convex portion of the solenoid assembly and the concave portion of the main body member are engaged with the radial convex portion and the radial concave portion of the other body, the solenoid assembly can be fixed to the main body member. Such a fixing plate composed of stoppers and screws can be eliminated, the number of parts can be reduced, and the structure can be simplified.

Further, according to the second aspect, the axial position of the solenoid assembly fixed to the main body member can be accurately set. In addition, in addition to the effect of claim 2, in the third aspect, since the axial positioning portion can be formed by utilizing the continuous step portion of the recess and the housing hole, the axial positioning portion is not particularly provided. It is good and can be further simplified. Further, in the case of the billing hole 4, the position in the circumferential direction of the solenoid assembly fixed to the main body member can be accurately set. Further, in the case of the billing hole 5, either one of the convex portion and the concave portion can be easily expanded / contracted in the radial direction by sliding contact with the other fitting surface of the radial convex portion.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view of a solenoid valve showing a first embodiment of the present invention.

FIG. 2 is a cross-sectional view taken along the line AA of FIG.

FIG. 3 is a sectional view of an essential part showing a second embodiment of the present invention.

FIG. 4 is a sectional view of an essential part showing a third embodiment of the present invention.

FIG. 5 is a sectional view of an essential part showing a fourth embodiment of the present invention.

6 is a cross-sectional view of a main part showing a modified example of FIG.

FIG. 7 shows a conventional example, (A) is a perspective view before fixation,
(B) is a perspective view after fixing.

[Explanation of reference numerals] 1 solenoid assembly 2 main body portion 3 convex portion 3A, 18A fitting surface 14, 30 main body member 18 concave portion 24, 28A, 28B, 31 radial concave portion 25A, 25B, 25C, 25D, 27, 32A, 32
B radial projection

Claims (5)

[Claims] 1. A solenoid valve having a solenoid assembly fixed to a main body member, wherein the solenoid assembly has a convex portion projecting from an axial end of the main body portion, and the main body member has a convex portion of the solenoid assembly. The projection and the recess have radial recesses that project radially in one of the fitting surfaces and that are recessed in the other of the fitting surfaces in the radial direction so that the radial recesses Electromagnetically configured such that either one of the convex portion and the concave portion can be expanded and contracted in the radial direction by sliding contact with the other fitting surface of the radial convex portion on one fitting surface. valve. 2. The solenoid valve according to claim 1, wherein the main body member is provided with an axial positioning portion that abuts a tip end of a convex portion of the solenoid assembly to set an axial position of the solenoid assembly. . 3. The body member has a housing hole that is connected to the recess to house the body of the solenoid assembly, and the solenoid assembly has a convex portion at the step where the recess and the housing hole are connected. The solenoid valve according to claim 1, further comprising an axial positioning portion that abuts an axial end of the main body portion projecting the portion to set an axial position of the solenoid assembly. 4. A receiving hole for projecting radially outward from a main body portion of the solenoid assembly, and a holding hole for connecting the main body member with the recess to accommodate the main body portion of the solenoid assembly. Has an opening at one end face, and has a recessed portion that is continuously provided radially outward of the storage hole and is formed to be recessed from the one end face where the storage hole opens to insert the stop portion of the solenoid valve. The solenoid valve according to claim 1, wherein: 5. The solenoid valve according to claim 1, wherein one of the convex portion and the concave portion is provided so as to be divided in the circumferential direction and expandable and contractible in the radial direction.