JP2598370Y2 - Electromagnetic device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electromagnetic device in which a movable core is attracted toward a fixed core by a magnetic force generated by applying an electric current to a coil wound around a coil bobbin. And fixing to a set plate that closes the opening of the opening.

[0002]

2. Description of the Related Art A conventional electromagnetic device is shown in FIG. 20
Is an inverted U-shaped housing, which extends downward from one end 21A of the upper bottom 21 to one side plate 21B and the other end 2B.
The other side plate portion 21D extends downward from 1C, and the lower side is opened. The one side plate 21B and the other side plate 21
A bent portion 21E is formed at a part of the lower end of D. Reference numeral 22 denotes a set plate that closes an opening below the housing 20. The electromagnetic unit V is configured as follows. 2
Reference numeral 3 denotes a coil bobbin having upper and lower flange portions. A coil 24 is wound around the outer periphery of the coil bobbin 23, and a fixed core 25 is fixedly disposed on the upper inside of the coil bobbin 23. Coil bobbin 23 facing 25
A movable core 26 that can move inside is disposed.

[0003] The electromagnetic device is assembled as follows. The electromagnetic portion V is inserted from the lower opening of the housing 20 toward the upper bottom portion 21, and the set plate 22 is disposed on the lower flange portion of the coil bobbin 23. Next, the bent portion 21E of the housing 20 is caulked inward toward the set plate 22. According to this, the lower opening of the housing 20 is closed by the set plate 22 and the electromagnetic portion V can be arranged between the upper bottom portion 21 of the housing 20 and the set plate 22.

[0004]

The conventional electromagnetic device has the following disadvantages. Since an external force is applied to the bent portion 21E of the housing 20 by a press or the like to bend toward the set plate 22, a large force is applied to the housing 20, the set plate 22, and the electromagnetic portion V, which is not preferable. In particular, one side plate portion 21 of the inverted U-shaped housing 20
B, when a bending force is applied to the side where the opening of the other side plate portion 21D is enlarged (a force is applied in the direction of B in FIG. 3), the electromagnetic portion V disposed inside may fall out of the housing 20. It is extremely difficult to assemble. The housing 20 is generally formed of a cold-rolled steel plate (SPCC). When the bent portion 21E of the housing 20 is bent toward the set plate 22 and caulked, the plating process of the bent portion 21E is separated. After the caulking, it is necessary to perform the treatment again from the point of rust prevention, and since the electromagnetic portion V is already disposed in the housing 20, this treatment is extremely difficult. Housing 2
In order to stabilize the crimping, the zero bent portion 21E is provided at two places on each of the one side plate part 21B and the other side plate part 21D, that is, a total of four places. The crimping of the bent portion 21E must be performed at the same time. According to this, the press machine and the receiving jig need to be specially prepared, which increases the investment cost, which is not preferable.

The electromagnetic device according to the present invention has been made in view of the above-mentioned problem, and has as its object to extremely securely fix the housing and the set plate to each other at a low cost.

[0006]

According to the present invention, the above object is achieved by one side plate portion directed downward from one end of the upper bottom portion and the other side plate portion directed downward from the other end of the upper bottom portion facing the one end. An inverted U-shaped housing having an opening at the bottom,
A set plate for closing an opening below the housing, a coil wound around a coil bobbin, a fixed core fixedly arranged above the coil bobbin, and a movable core movably arranged facing the fixed core In the electromagnetic device in which the set electromagnetic portion is disposed between the upper bottom portion of the housing and the set plate, the set plate has a bottom portion, one side plate portion that is directed upward from one end of the bottom portion, and the other end of the bottom portion facing the one end. A U-shaped upper side is formed on the other side plate portion, and a locking claw portion is provided on the one side plate portion and the other side plate portion so as to project inward from the inner surface of the plate portion. In one side plate part and the other side plate part,
At the lower end, a notch groove having a groove width A substantially equal to the width A of the locking claw portion and having an open lower end is formed, and the locking claw is positioned above and concentric with the notch groove. A locking hole capable of locking the portion is formed, and a bottom portion of the set plate is opposed to an opening below the housing, and a locking claw portion of the set plate is engaged with the locking hole through a cutout groove of the housing. This is achieved by stopping and placing the electromagnetic unit between the upper bottom of the housing and the bottom of the set plate.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the electromagnetic device according to the present invention will be described below with reference to FIGS. The electromagnetic part V is shown in FIG.
Therefore, the same reference numerals are used and the description is omitted. 1
Is an inverted U-shaped housing having the following configuration. The upper bottom portion 1A has a short shape, one side plate portion 1C extends below the left end 1B, and the other side plate portion 1E extends below the right other end 1D. One side plate 1C, other side plate 1E
A lower opening 1G is formed by the lower end portion 1F of the lower portion.
(Incidentally, a space is opened laterally between the one side plate 1C and the other side plate 1E.) A cutout groove 2 and a locking hole 3 are formed in the one side plate 1C and the other side plate 1E. You. The notch groove 2 has a groove width A which is open in the lower end portion 1F and has a short shape which is directed upward. (The groove width A will be described later.) The locking hole 3 is located concentrically with the notch groove and above the notch groove 2, and is formed through the plate portions 1C and 1E. (Here, "concentric" means extending above the notch groove 2.)

Reference numeral 4 denotes a U-shaped set plate having the following structure. 4A is a short bottom, one end 4 on the left side.
One side plate portion 4C extends upward from B, and the other right side 4
The other side plate portion 4E extends upward from D. The one side plate portion 4C and the other side plate portion 4E have respective plate portions 4C,
A locking claw 4G protruding inward from the inner surface 4F of E is formed. The locking claw 4G has a base 4H connected to the plates 4E and 4F, and an end 4J connected to the inner surface 4F. It protrudes more inward and is formed by pressing. And this locking claw part 4G has width A. Therefore, the groove width A of the notch groove 2 of the housing 1 is set to the groove width A into which the locking claw portion 4G can enter, and the locking hole 3 is also formed in the locking claw portion 4G.
G is penetrated to enter and be locked.

The electromagnetic device is assembled as follows. A set plate 4 is set in the opening 1G below the housing 1.
The electromagnetic portion V is disposed between the upper bottom portion 1A of the housing 1 and the bottom portion 4A of the set plate 4. In such a state, the outer surface 1H of the other side plate portion 1E and the one side plate portion 1C of the housing 1 is in contact with the other side plate portion 4E of the set plate 4 and the inner surface 4F of the one side plate portion 4C, and the opening 1G below the housing 1 and the set plate 4
With the bottom 4A of According to this, each locking claw 4G of the set plate 4 is connected to the lower end 1F of the housing 1.
The notch groove 2 is formed so as to enter the notch groove 2 through the opening of the notch groove 2, and at this time, the groove width A of the notch groove 2 is
G is substantially equal to the width A.
The positioning of the housing 1 and the set plate 4 is accurately performed. At this time, the engagement of the locking claw portion 4G into the notch groove 2 can be extremely easily performed without receiving any resistance.

Next, in the above state, the housing 1
Is pressed toward the bottom 4A of the set plate 4. According to this, the locking claw 4G escapes upward from the notch groove 2 and then reenters the locking hole 3 so that the end 4J of the locking claw 4G is inserted into the locking hole 3. Locked,
Thus, the housing 1 and the set plate 4 can be fixed,
An electromagnetic portion V is provided between the upper bottom portion 1A and the bottom portion 4A of the housing 1.
Can be stored and arranged. In this embodiment, in order to facilitate the description, it is preferable that the notch groove 2, the locking hole 3 and the locking claw portion 4G of the set plate 4 are individually provided on one side plate portion, respectively. If a plurality is provided on one side of the plate portion, the positioning and fixing of the housing 1 and the set plate 4 can be optimally performed.

[0011]

According to the electromagnetic device of the present invention, the following effects are obtained. To fix the housing to the set plate, simply press the lower end of the housing toward the bottom of the set plate and lock the locking claw of the set plate into the locking hole through the cutout groove of the housing. Since there is no need to apply a large external force such as caulking, it is possible to greatly improve the assembly workability and to prevent the large force from acting on the electromagnetic part. Electromagnetic parts are not damaged.
At first, in the initial stage, the housing and the set plate are extremely easily and accurately positioned by the notch groove of the housing and the locking claw of the set plate. Since the locking with the stop hole is performed, the positioning of the housing and the set plate can be performed very easily and accurately. A locking claw projecting from the inner surface of the set plate is provided, and the inner surface of the set plate is inserted toward the outer surface of the housing. It will no longer expand outwards,
At the time of assembly, the electromagnetic section was stably housed in the housing, and workability was greatly improved. Eliminating the caulking operation eliminates the need for special presses, jigs, and the like, and eliminates the need for re-plating treatment for peeling of plating caused by caulking.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing one embodiment of an electromagnetic device according to the present invention.

FIG. 2 is a perspective view of a housing and a set plate used in FIG.

FIG. 3 is a longitudinal sectional view of a conventional electromagnetic device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Housing 1A Upper bottom part 1B One end 1C One side plate part 1D Other end 1E Other side plate part 1F Lower part 1G Lower opening 4 Set plate 4A Bottom part 4B One end 4C One side end 4D Other end 4E Other side plate part 4F Inner surface 4G of a plate part Locking claw V Electromagnetic part

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) H02K 33/02 H01F 7/16 F16B 5/07

Claims (1)

(57) [Scope of request for utility model registration] 1. An upper plate 1A includes one side plate 1C directed downward from one end 1B thereof, and an upper plate 1A opposed to the other end 1D directed downward from the other end 1D of the upper base 1A. U-shaped housing 1 and housing 1
A coil 24 wound around the coil bobbin 23, a fixed core 25 is fixedly disposed above the coil bobbin 23, and the movable core faces the fixed core 25. In an electromagnetic device in which an electromagnetic portion V in which the movable portion 26 is movably disposed is disposed between the upper bottom portion 1A of the housing 1 and the set plate 4, the set plate 4 is moved upward from the bottom portion 4A and one end 4B of the bottom portion 4A. A side plate portion 4C and another side plate portion 4E which faces upward from the other end 4D of the bottom portion 4A opposed to the one end, and has a U-shape with an open top and one side plate portion 4
C, the other side plate portion 4E is provided with a locking claw portion 4G protruding inward from the inner surface 4F of the plate portion 4C, 4E, while the one side plate portion 1C of the housing 1 and the other side plate portion 1E have the same. A notch groove 2 having a groove width A substantially equal to the width A of the locking claw portion 4G and having an open lower end is formed in the lower end portion 1F, and the notch groove 2 is concentrically located above the notch groove 2. A locking hole 3 for locking the locking claw portion is formed, and the bottom portion 4A of the set plate 4 faces the opening 1G below the housing 1 and the locking claw portion 4G of the set plate 4 is cut into the housing 1. Notch groove 2
Into the locking hole 3 through the upper bottom 1 of the housing 1
An electromagnetic device, wherein an electromagnetic portion (V) is housed and arranged between A and a bottom portion (4A) of the set plate (4).