JP2002343629A - Plunger solenoid unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a plunger solenoid unit which is manufactured using a simple manufacturing method, simple in structure, so as to be easily assembled, and reduced in manufacturing cost as a whole. SOLUTION: A plunger solenoid unit 1 is equipped with an arc-shaped coil (solenoid) 3, an arc-shaped plunger 4, a yoke 5 which serves as a member for forming a magnetic circuit and is provided with a U-shaped cutout 5a located at its one end and quipped with an opening part 5b, and a stationary iron core 8, which is fitted into the cutout 5a via the opening part 5b and then fixed by caulking an opening piece 5b1 out of two opening pieces 5b1 and 5b2 which form the opening part 5b. As a result of this setup, this plunger solenoid unit is manufactured using a simple manufacturing method and is significantly reduced in manufacturing cost as a whole.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plunger solenoid device used as a small electromagnetic drive device, and more particularly, to a device which can be operated reliably and smoothly when the device is formed in an arc shape. The present invention relates to a plunger solenoid device having a structure suitable for downsizing.

[0002]

2. Description of the Related Art Conventionally, a plunger solenoid device has been used in electronic equipment as a small electromagnetic drive device according to the purpose. A plunger solenoid device generally includes a bobbin (electromagnetic solenoid) wound with a coil, a yoke that is disposed on the bobbin and is a magnetic material that strengthens a generated magnetic field, and a movable iron core (an operably disposed inside the bobbin). The plunger) and the bobbin have a fixed iron core fixed on the side opposite to the movable iron core.

When the coil is energized by such a plunger solenoid device, a magnetic flux is generated in an electromagnetic solenoid including the fixed iron core, and is attracted in the direction of the plunger fixed iron core operatively disposed inside the bobbin. Will be.

As described above, the plunger solenoid device is an actuator that moves the plunger by energizing the coil.

[0005] By the way, this type of conventional plunger solenoid device mainly has a bobbin and a plunger itself formed in a linear shape, and the driving operation of the bobbin and the plunger itself also moves straight in accordance with the linear shape. .
For this reason, in such a linear plunger solenoid device, the method of use and the place of use of the electronic device are limited, and especially when applied to a shutter that is required to be miniaturized, Because of its linear shape, it is not suitable for installation in a lens barrel. Even if it is installed, space loss occurs, and as a result, the demand for miniaturization cannot be satisfied.

Therefore, conventionally, for example, Japanese Patent Application Laid-Open No. Sho 50-1
As shown in the electric shutter described in Japanese Patent No. 47929, there is also a plunger solenoid device in which a bobbin and a plunger themselves are formed in an arc shape.

This type of plunger solenoid device is formed in an arc shape, and when it is applied, for example, as a shutter driving means of a camera, it is arranged so as to correspond to the shape of a lens barrel on which the shutter is mounted. Therefore, it can be installed without losing the installation space, and when it is applied to another electronic device, if it is used together with a linear one, the method of use and the place of use are not limited.

However, considering the operability of the arc-shaped plunger solenoid device, since the bobbin and the plunger itself are formed in an arc shape, the plunger is kinked during operation or slides inside the bobbin. If the plunger shifts, the sliding operation of the plunger cannot be performed smoothly, which may adversely affect the suction characteristics. A linear device does not cause such operational inconvenience, but such a configuration causes problems such as a loss of installation space especially when applied as a driving means of a shutter blade of a camera as described above. Not optimal because there are.

Therefore, in order to prevent the plunger from being twisted during operation or from displacing the plunger sliding inside the bobbin, for example, the communication between the plunger and the fixed iron core, and the bobbin sliding the plunger slides. The hole may be formed in a square shape. However, with such a configuration, the manufacturing process for manufacturing various components becomes complicated, and as a result, the manufacturing cost increases.

Usually, the fixed iron core and the plunger used in the plunger solenoid device are formed in a round shape, and are formed by a manufacturing process using a lathe or the like, for example. For this reason, if these members are formed in a square shape, a lathe or the like cannot be used, and they must be manufactured by another manufacturing method, and the manufacturing process becomes complicated.

[0011]

As described above, in the conventional arc-shaped plunger solenoid device, in order to improve its operability, for example, the communicating holes of the plunger and the fixed iron core and the bobbin on which the plunger slides are formed in a rectangular shape. Such a configuration may be used, but with such a configuration, it is not possible to use a lathe or the like conventionally used for molding a round fixed iron core or a plunger. For this reason, it has to be manufactured by another manufacturing method, and the manufacturing process becomes complicated, resulting in a problem that the manufacturing cost is increased.

The present invention has been made in view of the above problems, and has a plunger that can be manufactured by a simple manufacturing method and has a structure that is easy to assemble, so that the overall manufacturing cost can be reduced. It is intended to provide a solenoid device.

[0013]

A plunger solenoid device according to the present invention is a member for forming a magnetic circuit in a plunger solenoid device having a solenoid and a plunger, and is disposed at one end. ,
A yoke member configured with a U-shaped notch part opened at one side, and a fixed iron core that forms a part of the magnetic circuit and is fitted and fixed in the notch part, The fixed iron core is fixed by being crimped by an open portion of the U-shaped notch portion after being fitted into the notch portion.

According to the first aspect of the present invention, in the plunger solenoid device having the above-described configuration, after the fixed iron core is fitted into the notch portion, it is swaged by the open portion of the U-shaped notch portion. As a result, the structure can be easily assembled, and the manufacturing method can be manufactured by a simple manufacturing method. Therefore, the manufacturing process can be simplified, and as a result, the manufacturing cost can be reduced. Reduction can be achieved.

A plunger solenoid device according to a second aspect of the present invention is a plunger solenoid device having a solenoid and a plunger, wherein the plunger solenoid device is a member for forming a magnetic circuit. And a fixed iron core made of a sintered alloy and having a fitting portion fitted into the fitted portion and a fitting portion fitted into a hollow portion formed in the solenoid, The fixed iron core is crimped to the yoke member by caulking a base end of the fitted portion with the fitted portion of the fixed iron core fitted to the fitted portion. It is assumed that.

According to the second aspect of the present invention, in the plunger solenoid device having the above structure, the fixed iron core has a fitting end of the fixed iron core fitted to the fitted portion, and a base end of the fitting portion. By caulking the portion, the configuration is such that it is caulked and connected to the yoke member, so that the same effect as the first aspect of the invention can be obtained.

According to a third aspect of the present invention, in the plunger solenoid device according to the second aspect, the fitting portion of the fixed iron core has a rectangular parallelepiped shape.

According to the third aspect of the present invention, in the plunger solenoid device having the above-described configuration, the fixed iron core can be manufactured by a simple press working because the fitting portion of the fixed iron core has a rectangular parallelepiped shape. It is possible to further simplify the manufacturing process. Other functions and effects are the same as those of the second aspect of the present invention.

A plunger solenoid device according to a fourth aspect of the present invention is a plunger solenoid device having a solenoid and a plunger, which is a member for forming a magnetic circuit, and is provided with a hole at one end. A yoke member, a fixed rectangular iron core attached to one end of the yoke member and forming a part of the magnetic circuit together with the yoke member, and provided on an end face of the fixed iron core via the hole. And a cylindrical member for fixing the fixed iron core to the yoke member by caulking an outer base end portion after fitting into the hole.

According to a fourth aspect of the present invention, in the plunger solenoid device having the above structure, the fixed iron core is divided into a fixed iron core main body and a cylindrical member, and is further provided through a hole of the fixed iron core. After being fitted into the hole provided in the end face of the fixed iron core, by caulking the outer base end, the fixed iron core was configured to fix the yoke member.
The fixed iron core and the columnar member can be manufactured by a simple manufacturing method, and the fixed iron core can be securely mounted on the yoke by a simple assembling method. This makes it possible to reduce the manufacturing cost of the device.

A plunger solenoid device according to a fifth aspect of the present invention is a plunger solenoid device having a solenoid and a plunger, which is a member for forming a magnetic circuit, and is provided with a hole at one end. A yoke member, a fixing column attached to one end of the yoke member and fitted and fixed in the hole, and an iron core having the same axis as the fixing column and forming a part of a magnetic circuit with the yoke member And a fixed iron core having a cylindrical portion.

According to a fifth aspect of the present invention, in the plunger solenoid device having the above-mentioned configuration, the fixed iron core has a fixing column portion fitted and fixed in the hole portion and the same yoke having the same axis as the fixing column portion. Since it is configured to have the iron core columnar part forming a part of the magnetic circuit together with the member, in addition to simplifying the method of manufacturing the fixed iron core, the assembling method is also simple similarly to the above invention. As a result, it is possible to reduce the manufacturing cost of the device.

A plunger solenoid device according to a sixth aspect of the present invention is the plunger solenoid device according to any one of the first to fifth aspects, wherein a tip of the fixed iron core abutting on the plunger is V. A character-shaped concave portion is formed, and a V-shaped convex portion is formed at the tip of the plunger in contact with the concave portion.

According to the sixth aspect of the present invention, also in the plunger solenoid device according to any one of the first to fifth aspects, the tip of the fixed iron core abutting on the plunger has a V-shape. A concave portion is formed, and a V-shaped convex portion is formed at the tip of the plunger in contact with the concave portion. Therefore, even when the stroke between the plunger and the fixed iron core is long, the magnetic field works effectively, The suction characteristics can be improved. Other functions and effects are the same as those of the above invention.

[0025]

Embodiments of the present invention will be described with reference to the drawings. First Embodiment (Configuration) FIGS. 1 to 4 show a first embodiment of a plunger solenoid device according to the present invention. FIG. 1 is a perspective view showing the entire configuration of the plunger solenoid device, and FIG. FIGS. 2A and 2B are views for explaining the configuration of a bobbin used in each embodiment of the present invention. FIG. 2A is a perspective view showing the configuration of an integrally formed bobbin, and FIG. FIG. 3 is a perspective view showing a specific configuration of the apparatus shown in FIG. 1, and FIG. 3A is a cross-sectional view of the apparatus shown in FIG. FIG. 3 (b) is a view of A in FIG. 3 (a).
FIG. 4 is a cross-sectional view taken along the line A, and FIG.
FIG. 4A is an exploded perspective view showing a configuration of a main part of the device, and FIG. 4B is a cross-sectional view of a yoke mounting portion for explaining a method of fixing a fixed iron core.

As shown in FIG. 1, a plunger solenoid device 1 according to the present embodiment has a coil (electromagnetic solenoid) 3.
, A yoke 5 which is a magnetic material attached to the bobbin 2, and an arc-shaped plunger (movable iron core) slidably disposed inside the arc-shaped bobbin 2. 4 and a fixed iron core 8 (FIG. 3) which is disposed at the base end of the bobbin 2 and generates a magnetic flux for attracting the plunger 5.
Reference) and the like.

The coil 3 forms an electromagnetic solenoid by winding a winding of a copper wire or the like. Although not shown, both base ends of the copper wire are led out. Connected to a current generating means (for example, a control means). That is, the on / off of the current flowing through the coil 3 is controlled by the control means, whereby the suction operation of the plunger solenoid device of the device is controlled.

The bobbin 2 around which the coil 3 is wound has a communication hole formed therein for sliding the plunger. A plunger 4 having the same arc shape is slidably disposed in the communication hole. I have.

On the outside of the bobbin 2, a yoke 5 made of a magnetic material is attached. The yoke 5 is used to generate a magnetic field (magnetic flux) necessary for electromagnetically driving the plunger 4 by a current flowing through the coil 3. The yoke 5 is formed in a U-shape. Are fixed so as to sandwich the base ends of both sides.

In the present embodiment, in order to further improve the suction characteristics, the working surface (bottom surface) of the U-shaped yoke 5 is arranged inside the arc-shaped bobbin 2. In other words, the action surface of the yoke 5 is arranged inside the arc shape, thereby shortening the magnetic path generated between the yoke 5 and the coil 3 and increasing the magnetic force to increase the attraction force of the plunger 4. ing.

In the plunger solenoid device 1 of the present embodiment, the operability is improved by preventing the plunger from being twisted during operation or by preventing the bobbin from sliding between the plunger and the inside thereof.
The bobbin 2 and the plunger 5 that slides inside the bobbin 2 are configured to have a shape with low friction and guide means capable of regulating the sliding position.

A specific configuration of the guide means is as follows. For example, the communication hole of the bobbin 2 is formed in a square shape, and accordingly, the cross-sectional shape of the plunger 4 sliding in the square communication hole is formed in the same square shape. (See FIG. 3).
That is, by forming both the communication hole of the bobbin 2 and the plunger 4 in a rectangular shape, when the plunger 4 slides inside the communication hole, the position of the plunger having the same shape is regulated (guided) by the square of the communication hole. Can be. This prevents the plunger 4 from kinking during sliding, and allows the plunger 4 to slide reliably without causing any displacement between the bobbin 2 and the plunger 4.

The plunger solenoid device 1 shown in FIG.
The bobbin 2 used for (1) has also been improved to reduce and simplify the manufacturing cost. FIG. 2 shows a specific configuration example of the bobbin 2 having such an improvement.

In the configuration example shown in FIG. 2A, the arc-shaped bobbin 2 is formed by a normal forming process. That is, the body shape of the bobbin 2 can be formed by a simple forming process without a complicated manufacturing operation. Although this method has been conventionally practiced, it can of course be applied to the case of manufacturing a bobbin 2 having an arc-shaped and square hole 2d.

The bobbin 2 molded by this molding method
As shown in FIG. 2 (a), the two side surfaces 2a formed in an arc shape and opposed to each other, the bottom surface 2c interposed between the side surfaces 2a, and the base ends on both sides of the both side surfaces 2a. It is arranged so as to be sandwiched, and is formed to include the mounting surface 2E for mounting the yoke 5. In the case of this example, the plunger 4 having a rectangular shape slides while being guided by the side surface portions 2a and the bottom surface portion 2c.

On the other hand, in the configuration example shown in FIG. 2B, the main body of the arc-shaped bobbin 2 is divided into upper and lower parts, each of which is formed and assembled to form the bobbin 2.
Is employed. Such a manufacturing method is a particularly desirable method for implementing the embodiments of the present invention.

More specifically, the first and second housings 6A and 7A obtained by dividing the bobbin 2 into upper and lower parts are respectively formed by ordinary forming steps. In this case, the first housing 6A sandwiches a U-shaped main body 6b having a groove 6e for forming a rectangular communication hole 2E, and base ends on both sides of the main body 6b. And a mounting surface portion 6 a for mounting the yoke 5. The positioning projection 6c for easily and reliably performing positioning when combined with the other housing 7A is provided with the main body 6b.
Are formed at predetermined positions on both side surfaces.

The second housing 7A combined with the first housing 6A has a groove 7e for forming a rectangular communication hole 2E substantially in the same manner as the first housing 6A. It is formed to include a U-shaped main body portion 7b and a mounting surface portion 7a for mounting the yoke 5 so as to sandwich the base end portions on both sides of the main body portion 7b. Further, positioning concave portions 7c are formed at predetermined positions on both side surfaces of the main body portion 7b so as to fit with the positioning convex portions 6c on the first housing 6A side when being combined with the first housing 6A. ing.

Next, the first housing 6 thus formed
A and the second housing 7A are combined as shown in FIG. At this time, positioning is performed by combining the positioning protrusions 6c of the first housing 6A so as to fit into the positioning recesses 7c of the second housing 7A. That is, the fitting of the positioning projection 6c and the positioning recess 7c causes the end surface 6d of the main body 6b of the first housing 6A other than the positioning projection 6c and the positioning recess 7c of the main body 7b of the second housing 7A. 7d of the first housing 6A and the mounting surfaces 7a of the second housing 7A.
Can be brought into close contact with each other in a state where they are completely positioned.

Thus, the first housing 6A and the second housing 7
The bobbin 2 having the rectangular communication hole 2E used in the present embodiment is formed by completely fixing the joint portion A by, for example, a bonding step using an adhesive or a welding step.

The communication hole 2 of the bobbin 2 thus configured
The shape of the plunger 4 is also formed in a square shape according to the square shape of E.

FIG. 3 shows the configuration of the plunger solenoid device of the present embodiment completed using the bobbin 2 and the plunger 4 having the above configuration.

As shown in FIG. 3 (a), in the present embodiment, the plunger 4 of the same shape is slidably fitted in the communication hole 2E of the arc-shaped bobbin 2. A fixed iron core 8 is attached to the base end.

The base end of the plunger 4 is formed in a pyramid shape, and the base end of the fixed iron core 8 on the plunger side to be joined thereto is formed in a concave pyramid shape. I have. Further, an air hole 8a is provided at a predetermined location inside the fixed iron core 8 to allow air compressed by sliding of the plunger 4 to escape to the outside. Thereby, the slidability of the plunger 4 can be further improved.

In the plunger solenoid device 1 having the above configuration, it is assumed that the plunger solenoid device 1 is driven. At this time, when a current is applied to the coil 3 by a control unit (not shown), a magnetic flux is generated inside the bobbin 2.

Then, the plunger 4 slidably mounted inside the bobbin 2 slides toward the center of the magnetic flux with the generation of the magnetic flux.

At this time, in the present embodiment, FIG.
As shown in the cross-sectional view taken along the line A-A, the shape of the communication hole 2E of the plunger 4 and the bobbin 2 is a square shape.
The base end of the plunger 4 slides toward the fixed iron core 8 while its position is regulated (guided) at the four corners of the communication hole 2E. Thereby, the plunger 4 can be slid reliably without twisting of the plunger 4 at the time of sliding, and without causing displacement between the bobbin 2 and the plunger 4.

Then, the base end of the plunger 4 is sucked in the direction of the fixed iron core 8 by this sliding drive.

To cancel the suction, the supply of current to the coil 3 is stopped by control means (not shown), whereby the magnetic flux generated in the center of the bobbin 2 with the yoke 5 is canceled. You.

Then, the plunger 4 joined to the fixed iron core 8 of the bobbin 2 is released from the magnetic force attracted by the generation of the magnetic flux, so that, for example, the spring attached to the opposite base end of the plunger 4 By such biasing force, the bobbin 2 slides outward.

Also at this time, the plunger 4 slides toward the outside of the bobbin 2 while its position is regulated (guided) at the four corners of the communication hole 2E, similarly to the above-described sliding operation at the time of energization. Is separated from the fixed iron core 8.

The plunger solenoid device according to the present invention achieves the above object by improving the shape of the fixed iron core 8 and the mounting structure of the yoke 5 for mounting the fixed iron core 8. It is characteristic.

More specifically, the base end of the plunger 4 used in the present embodiment is formed in a V-shaped convex shape, and the base end of the fixed iron core 8 to be joined therewith on the plunger side is as follows. As shown in FIG. 4A, the plunger 4 is formed in a V-shaped concave shape in accordance with the V-shaped convex shape.

The fixed iron core 8 is formed in a rectangular parallelepiped shape, and the base end on the plunger side is V-shaped as described above.
It has a V-shaped concave portion 8c formed in a concave shape. An air hole 8 through which the air compressed by the sliding of the plunger 4 escapes to the outside is provided inside the fixed iron core 8 through the opposite side from a predetermined position of the V-shaped recess 8c.
a is provided. By providing this air hole 8a,
The slidability of the plunger 4 can be improved.

Further, U-shaped mounting grooves 8b are formed on the upper and lower sides of the fixed iron core 8, respectively. These mounting grooves 8a are used when the fixed iron core 8 is fitted into a predetermined portion of the yoke 5 and mounted.

The fixed iron core 8 having such a configuration is easily manufactured by a simple pressing process, that is, by pressing a single plate material used.

In this embodiment, the V-shaped recess 8 is also used.
An air hole 8a for letting out air compressed by sliding of the plunger 4 to the outside is provided in the inside of the fixed iron core 8 through a base end face on the opposite side from a predetermined position of c.

On the other hand, in the yoke 5 to which the fixed iron core 8 is attached, an opening 5b for fitting the fixed iron core 8 into the bent surface on one side of the yoke 5 formed in an arc shape, and A U-shaped notch 5a is formed.

The size of the notch 5a in the height direction (vertical direction in the figure) is formed in accordance with the height of the fixed iron core 8 fitted in the notch 5a. It has become. The width of the upper and lower end surfaces 5a1 and 5a2 of the cutout portion 5a is formed to have substantially the same size as the width of the fixed iron core 8 in order to reliably position the fixed iron core 8 of a rectangular parallelepiped when it is inserted into the fixed position. Have been.

Further, the opening width of the opening 5b is formed so as to fit the mounting groove 8b of the fixed iron core 8. One of the opening pieces 5b1 and 5b2 on the bent surface of the yoke 5 forming the opening 5b is formed.
b1 has an inner peripheral surface formed in a tapered shape, and when the fixed iron core 8 is mounted, the opening piece 5b1 is deformed so as to be crushed by pressure from above, so that the fixed iron inserted therein is inserted. It is possible to fix the wick 8. In addition, the other opening piece 5b2 can reliably position the fixed iron core 8 inserted therein when fixed by the opening piece 5b1.

(Operation) Next, a method of mounting the fixed iron core, which is a feature of the present embodiment, will be described in detail with reference to FIG.

In the plunger solenoid device 1 of the present embodiment, the fixed iron core 8 constituting the device 1 is manufactured by a simple pressing process because it has a rectangular parallelepiped shape. The yoke 5 can also be easily manufactured by, for example, pressing a single plate of a magnetic material to be used, and further performing a process of bending the yoke 5 into an arc shape.

Now, it is assumed that the fixed iron core 8 having the above configuration is mounted on the yoke 5. First, as shown in FIG. 4 (a), fixed irons are formed such that opening pieces 5b1 and 5b2 forming openings 5b of the yoke 5 are fitted into mounting grooves 8b provided on the upper and lower surfaces of the fixed iron core 8, respectively. The core 8 is slid into the notch 5 a in the yoke 5.

Thereafter, the fixed iron core 8 is moved in the direction of the plunger in the yoke 5, and as shown in FIG. 4 (b), the lower surface of the fixed iron core 8 at the end side is cut out of the notch 5a. While abutting on the lower end surface 5a2 and performing positioning with the yoke 5,
The fixed iron core 8 is fitted into the notch 5a by moving the upper surface of the fixed iron core 8 in the direction of the notch 5a.

Then, while maintaining this state, pressure is applied in the vertical direction from the upper portion of the opening piece 5b1 by, for example, a crushing machine to thereby open the opening piece 5b1.
Is deformed as shown in the figure, thereby caulking the fixed iron core 8 fitted therein, and as a result, the fixed iron core 8 is securely fixed to the yoke 5. In this case, the positioning of the fixed iron core 8 is easily and accurately performed by the upper and lower end surfaces 5a1 and 5a2 of the notch 5a of the yoke 5.

That is, in the prior art, since the fixed iron core 8 had a round shape, it was necessary to perform positioning with the yoke 5 using a jig or the like. Thus, the fixed iron core 8 can be positioned with respect to the yoke 5 without using a jig or the like, and the manufacturing process can be simplified.

(Effect) Therefore, according to the present embodiment, after the rectangular parallelepiped fixed iron core 8 is fitted into the U-shaped notch 5a, one of which is open at one end of the yoke 5, With the configuration in which the fixed iron core 8 is fixed by caulking with the opening piece 5b1 forming the opening 5b, various parts can be manufactured by a simple manufacturing method, and the assembly can be easily performed. . This makes it possible to realize the plunger solenoid device 1 that can reduce the overall manufacturing cost.

Second Embodiment (Structure) FIG. 5 is a view for explaining the structure of a fixed iron core and a yoke, which are features of a plunger solenoid device according to a second embodiment of the present invention. 5 (a) is a perspective view showing a configuration of a fixed iron core employed in the apparatus, FIG. 5 (b) is a perspective view showing a configuration of a main part of a yoke to which the fixed iron core is attached, and FIG. 5 (c). FIG. 6 is a sectional view taken along the line AA of FIG. 5B for explaining a method of fixing the fixed iron core. In FIG. 5, the same components as those in the first embodiment are denoted by the same reference numerals, and description thereof will be omitted. Only different portions will be described.

In the present embodiment, only the crimped portion of the fixed iron core 8 in the first embodiment is formed in a round shape, and a mounting hole for passing the crimped portion is provided in the yoke. 5 is provided on one of the bent surfaces.

The overall configuration of the plunger solenoid device 1 of the present embodiment is substantially the same as that of the first embodiment.

The fixed iron core 8A employed in the plunger solenoid device 1 of the present embodiment is substantially the same as the fixed iron core 8 employed in the first embodiment, as shown in FIG. The base end of the plunger has a V-shaped concave portion 8c formed in a V-shaped concave shape. Also,
At the opposite end of the fixed iron core 8A, a round caulking portion 8d for attachment is integrally formed.

That is, the fixed iron core 8A having such a configuration
Is manufactured by a manufacturing method such as sintering because the mounting caulking portion 8d has a round shape and the main body portion has a rectangular parallelepiped shape, so that press working or lathing cannot be performed. Will be. In such a manufacturing method, for example, a mold having a shape of the fixed iron core 8A shown in FIG.
Using this mold, the fixed iron core 8A is extracted from the material components of the fixed iron core.
Of the fixed iron core 8A by molding the prototype and further performing a sintering process using a furnace or the like.

In this embodiment, the V-shaped recess 8 is also provided.
An air hole 8a is provided in the fixed iron core 8A through a base end surface of the attachment caulking portion 8d from a predetermined position c to allow air compressed by sliding of the plunger 4 to escape to the outside. .

On the other hand, in the yoke 5 on which the fixed iron core 8A is mounted, as shown in FIG. 5B, the crimping portion 8d for mounting the fixed iron core 8A is inserted through the bent surface to be mounted. The mounting hole 5c is provided. Since the mounting hole 5c is a mere hole, the manufacturing method can be implemented by a simple boring operation.

(Operation) Next, a method of mounting the fixed iron core, which is a feature of the present embodiment, will be described in detail with reference to FIG.

Now, the fixed iron core 8A having the above configuration is connected to the yoke 5
Shall be attached to First, the crimping portion 8d for mounting the fixed iron core 8 shown in FIG. 5A is fitted into the mounting hole 5c from the inside of the bent surface of the yoke 5 as shown in FIG.

Then, while maintaining this state, the fixed iron core 8 is set so that the V-shaped recess 8c of the fixed iron core 8 is at a predetermined position.
Positioning is performed by using a jig (not shown) while rotating A, and while maintaining this state, the base end of the crimping portion 8d for attachment of the fixed iron core 8A is crushed by a machine or the like to form the crimping portion 8d.
As a result, the fixed iron core 8 </ b> A is crimped and fixed to the bent surface of the yoke 5.

(Effects) Therefore, according to the present embodiment, since the fixed iron core 8A is manufactured by the sintering method from its shape, the manufacturing process is somewhat difficult. If it is manufactured, it is suitable for mass production. Further, the crimping portion 8d for attaching the fixed iron core 8 to the yoke 5 is also suitable.
Can be securely fixed by caulking, so that assembly can be easily performed. As a result, it is possible to realize the plunger solenoid device 1 that can reduce the overall manufacturing cost as compared with the conventional technology.

Third Embodiment (Structure) FIG. 6 is a view for explaining the structure of a fixed iron core and a yoke, which are features of a plunger solenoid device according to a third embodiment of the present invention. 6A is a perspective view showing a configuration of a fixed iron core employed in the device, and FIG. 6B is a cross-sectional view showing a configuration of a main part of a yoke to which the fixed iron core is attached. In FIG. 6, the same components as those of the first embodiment are denoted by the same reference numerals, and the description thereof will be omitted. Only different portions will be described.

In this embodiment, the plunger solenoid device 1 of the second embodiment is improved.
The fixed iron core 8A employed in the device 1 is
B and the crimping portion 8C for attachment.

The overall configuration of the plunger solenoid device 1 of this embodiment is substantially the same as that of the second embodiment.

The fixed iron core 8B employed in the plunger solenoid device 1 of this embodiment is substantially the same as the fixed iron core 8 employed in the first embodiment, as shown in FIG. A fixed iron core main body 8B having a V-shaped recess 8c having a V-shaped recess at the base end on the plunger side,
The fixed iron core 8B comprises a round-shaped caulking portion 8C mounted on the opposite end.

A mounting hole 8e for mounting the mounting caulking portion 8C is formed on the end face of the fixed iron core body 8B. On the other hand, the mounting hole 8e is provided in the mounting caulking portion 8C.
And a fixing shaft 8f for press-fitting and fixing to the fixed iron core body 8B.

Therefore, when the fixed iron core is to be mounted on the yoke 5, the mounting shaft 8f of the mounting caulking portion 8C is press-fitted into the mounting hole 8e of the fixed iron core body 8B in advance. 8C needs to be fixed to the fixed iron core 8B.

In the present embodiment, the fixed iron core is divided into a fixed iron core body 8B and a fixing caulking portion 8C. It is possible to manufacture by a simple press working as in the embodiment described above, while the crimping portion 8C for mounting can be manufactured by a lathe or the like as in the prior art. Thus, the fixed iron core can be manufactured by a simpler manufacturing method than the sintering method according to the second embodiment.

In this embodiment, although not shown, a predetermined portion of the V-shaped concave portion 8c is inserted into the mounting caulking portion 8C.
An air hole 8a is provided in the fixed iron core 8B through the base end surface for releasing the air compressed by the sliding of the plunger 4 to the outside.

On the other hand, in the yoke 5 to which the fixed iron core 8A is mounted, the yoke 5 shown in FIG.
As shown in (b), the fixed iron core 8B is
The mounting hole 5d through which the mounting caulking portion 8C is inserted is provided. Since the mounting hole 5d is a simple hole, the manufacturing method can be implemented by a simple boring operation.

(Operation) Next, a method of mounting the fixed iron core, which is a feature of the present embodiment, will be described in detail with reference to FIG.

First, as described above, the mounting caulking portion 8C
The mounting shaft 8f is press-fitted into the mounting hole 8e of the fixed iron core body 8B, and the additional tightening portion 8C is fixed to the fixed iron core 8B.

When the integrated fixed iron core 8B is mounted on the yoke 5, the crimping portion 8C for mounting the fixed iron core 8B is connected to the bent surface of the yoke 5 as shown in FIG. The fitting hole 5d is fitted from the inside.

Thereafter, while maintaining this state, the positioning is performed using a jig (not shown) while rotating the fixed iron core 8B so that the V-shaped concave portion 8c of the fixed iron core 8B is at a predetermined position. A caulking portion 8C for attaching the fixed iron core 8B
By crimping the base end of the machine with a machine or the like, the caulked portion 8C
1 is formed and the fixed iron core 8B is crimped and fixed to the bent surface.

(Effect) Therefore, according to the present embodiment, the fixed iron core is fixed to the fixed iron core body 8B and the fixing caulking portion 8C.
The fixed iron core body 8
B can be manufactured by simple press working as in the first embodiment, while the crimping portion 8 for mounting is used.
Since C can be manufactured using a lathe or the like as in the prior art, the fixed iron core can be manufactured by a simpler manufacturing method than the sintering method according to the second embodiment. Other effects are the same as those of the second embodiment.

In the present embodiment, the material of the fixing caulking portion 8C, which is a divided member, is
The material may be made of the same material as B, but is not limited thereto, and may be made of another material.

Fourth Embodiment (Structure) FIG. 7 is a view for explaining the structure of a fixed iron core and a yoke which characterize a fourth embodiment of the plunger solenoid device according to the present invention. 7A is a perspective view showing a configuration of a fixed iron core employed in the device, FIG. 7B is a cross-sectional view showing a configuration of a main part of a yoke to which the fixed iron core is attached, and FIG. FIG. 4 is a perspective view showing a schematic configuration of a fixed iron core side tip of a plunger employed in the device. In addition,
In FIG. 7, the same components as those in the first embodiment are denoted by the same reference numerals, and the description thereof will be omitted. Only different portions will be described.

In this embodiment, the plunger solenoid device 1 of the second embodiment is improved.
The fixed iron core 8A employed in the device 1 is formed not in a rectangular parallelepiped but in a round shape, and accordingly, the communication hole 2 of the bobbin 2 is formed.
It is characteristic that the shapes of the E and the plunger 4 are also round.

The plunger solenoid device 1 of the present embodiment is substantially the same in overall configuration as the second embodiment, but the fixed iron core 8D employed in the device 1
Is formed in a round shape as shown in FIG.

Further, the base end of the fixed iron core 8D on the plunger side has a V-shaped recess 8c formed in a V-shaped recess substantially similarly to the fixed iron core 8A of the second embodiment. The fixed iron core 8A is integrally formed with a round-shaped caulking portion 8g at the opposite end thereof.

In this embodiment, too, air compressed by the sliding of the plunger 4 flows from a predetermined portion of the V-shaped recess 8c to the inside of the fixed iron core 8D through the base end surface of the caulking portion 8g. Is provided with an air hole 8a for allowing the air to escape to the outside.

The outer diameter of the mounting caulking portion 8g is formed such that the outer diameter of the fixed iron core 8D is smaller.

Therefore, although the fixed iron core 8D is formed integrally with the mounting caulking portions 8g having different warps, the fixed iron core 8D is manufactured by a lathe or the like in the same manner as in the prior art because the shape is round. It is possible. Thus, the fixed iron core can be manufactured by a simpler manufacturing method than the sintering method according to the second embodiment.

On the other hand, in the yoke 5 on which the fixed iron core 8D is mounted, as shown in FIG. 7B, the crimping portion 8g for mounting the fixed iron core 8D is inserted through the bent surface to be mounted. The mounting hole 5d is provided. Since the mounting hole 5d is a simple hole, the manufacturing method can be implemented by a simple boring operation.

In the present embodiment, the first to third
Unlike the plunger 4 and the bobbin 2 in the embodiment, the cross-sectional shape of the plunger 4 and the communication hole 2E of the bobbin 2 on which the plunger 4 slides are also formed in a round shape as in the related art.

The plunger 4 is formed in a generally round shape as shown in FIG. 7 (c), and a base end 4A which is joined to the V-shaped recess 8c of the fixed iron core 8D is formed as follows.
It is provided with a convex V-shaped convex portion 4c.

Therefore, even when the plunger 4 is manufactured, it can be manufactured by a manufacturing method such as a lathe.

(Operation) Next, a method of mounting the fixed iron core, which is a feature of the present embodiment, will be described in detail with reference to FIG.

Now, the fixed iron core 8D having the above-described configuration is attached to the yoke 5
Shall be attached to First, the mounting caulking portion 8g of the fixed iron core 8D shown in FIG. 7A is fitted into the mounting hole 5d from the inside of the bent surface of the yoke 5 as shown in FIG.

Then, while maintaining this state, positioning is performed using a jig (not shown) while rotating the fixed iron core 8D so that the V-shaped recess 8c of the fixed iron core 8D is at a predetermined position. The base end of the crimping portion 8g for attachment of the fixed iron core 8D is crushed by a machine or the like while holding the crimping portion 8.
g1 is formed so that the fixed iron core 8D
Is fixed to the bent surface of the yoke 5 by caulking.

(Effect) Therefore, according to the present embodiment, since the mounting caulked portion 8g and the fixed iron core 8D are all formed in a round shape, the sintering and the like in the second embodiment are performed. It can be manufactured by a manufacturing method using a simple lathe or the like without performing a difficult manufacturing process. Other effects are the same as those of the second embodiment.

In the first to fourth embodiments according to the present invention, the V-shaped concave portion 8c is provided at the base end of the fixed iron core 8 on the plunger side.
The plunger 4 which engages with the fixed iron core 8 also has a V-shaped protrusion 4c fitted into the V-shaped recess 8c at the base end on the engagement side.
(See FIG. 7C). That is, by forming both connecting portions in a V-shape, the magnetic field works effectively even when the stroke between the plunger and the fixed iron core is long, and the attraction characteristics of the plunger can be improved. Further, the V-shaped recess 8c of the fixed iron core 8 can be manufactured by a simple manufacturing method such as cutting.

In the first to fourth embodiments according to the present invention, the shape of the air hole 8a of the fixed iron core 8 is desirably a linear shape, but there is no problem with a curved line. The configuration is not limited to the configuration of these embodiments, and any configuration may be used as long as it has a function of reliably releasing the compressed air inside the communication hole 2E to the outside.

Further, the present invention is not limited to the first to fourth embodiments, and combinations and applications of these embodiments are also applied to the present invention.

[0112]

As described above, according to the present invention, the fixed iron core and the yoke to which the fixed iron core is attached can be manufactured by a simple manufacturing method and can be easily assembled. It is possible to provide a plunger solenoid device whose cost can be reduced.

[Brief description of the drawings]

FIG. 1 is a configuration perspective view showing a first embodiment of a plunger solenoid device of the present invention, and showing the entire configuration of the device.

FIG. 2 is a configuration perspective view for explaining a configuration of a bobbin used in each embodiment of the present invention.

FIG. 3 is a sectional view of the device for explaining a specific configuration of the device of FIG. 1;

FIG. 4 is a configuration diagram for explaining a configuration of a fixed iron core and a yoke, which are features of the present embodiment.

FIG. 5 is a perspective view illustrating a plunger solenoid device according to a second embodiment of the present invention and illustrating a characteristic configuration of the device.

FIG. 6 is a perspective view showing a third embodiment of a plunger solenoid device according to the present invention, and illustrating a characteristic configuration of the device.

FIG. 7 is a perspective view illustrating a plunger solenoid device according to a fourth embodiment of the present invention and illustrating a characteristic configuration of the device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Plunger solenoid device, 2 ... Bobbin, 2E ... Communication hole, 3 ... Coil (solenoid), 4 ... Plunger (movable iron core), 4A ... Base end part, 4c ... V-shaped convex part, 5 ... Yoke (magnetic material) ), 5a ... notch, 5b ... opening, 5a1 ... upper end surface, 5a2 ... lower end surface, 5b1, 5b2 ... opening piece, 5c, 5d ... mounting hole, 6A ... first housing, 6c ... positioning convex portion 7A: second housing, 7c: positioning concave portion, 8, 8A, 8B, 8D: fixed iron core, 8b: mounting groove, 8c: V-shaped concave portion, 8d, 8c, 8g: mounting caulking portion.

Continued on the front page F-term (reference) 2H044 BE01 BE07 BE13 2H081 BB16 CC34 CC35 CC36 5E048 AB07 AD12

Claims (6)

[Claims] 1. A plunger solenoid device having a solenoid and a plunger, which is a member for forming a magnetic circuit, comprising: a U-shaped notch which is disposed at one end and one of which is open. The configured yoke member, and a fixed iron core that forms a part of the magnetic circuit and is fitted and fixed in the cutout portion, wherein the fixed iron core is provided in the cutout portion. The plunger solenoid device, wherein after being fitted, the plunger solenoid device is fixed by caulking by an open portion of the U-shaped cutout portion. 2. A plunger solenoid device having a solenoid and a plunger, which is a member for forming a magnetic circuit, the yoke member having one end provided with a fitted portion, and a sintered alloy. A fixed iron core having a fitting portion fitted to the fitted portion and a fitting portion fitted to a hollow portion formed in the solenoid, wherein the fixed iron core is formed of the fixed iron core. A plunger solenoid device characterized by being caulked to the yoke member by caulking a base end of the fitted portion in a state where the fitted portion is fitted to the fitted portion. 3. The plunger solenoid device according to claim 2, wherein the fitting portion of the fixed iron core has a rectangular parallelepiped shape. 4. A plunger solenoid device having a solenoid and a plunger, wherein the yoke member is a member for forming a magnetic circuit, the yoke member having a hole at one end thereof, and a yoke member having a hole at one end thereof. A fixed iron core having a rectangular parallelepiped shape and forming a part of the magnetic circuit together with the yoke member; and And a cylindrical member for fixing the fixed iron core to the yoke member by caulking the plunger. 5. A plunger solenoid device having a solenoid and a plunger, wherein the yoke member is a member for forming a magnetic circuit, the yoke member having a hole provided at one end, and a yoke member provided at one end of the yoke member. A fixed iron core having a fixed columnar portion fitted and fixed in the hole portion and having an iron core columnar portion having the same axis and forming a part of a magnetic circuit with the yoke member; A plunger solenoid device characterized by comprising: 6. A V-shaped concave portion is formed at the tip of the fixed iron core that contacts the plunger, and a V-shaped convex portion is formed at the tip of the fixed iron core that contacts the plunger. The plunger solenoid device according to any one of claims 1 to 5, characterized in that: