JP3472858B2 - Manufacturing method of leaf spring integrated type core - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a leaf spring integrated core, which is capable of producing a large number of leaf spring integrated cores easily and in a short time.

[0002]

2. Description of the Related Art A conventional leaf spring integrated core (Japanese Patent Application Laid-Open No. 62-
(See FIGS. 3a and 3b of Japanese Patent No. 113977)
The manufacturing method of is that the movable iron cores are individually superposed on the separated leaf springs and set in a mold, and the rubber is poured into the mold to form the rubber for the valve seal and the rubber for the packing. The movable iron core is integrally formed of these rubbers.

[0003]

However, the conventional method of manufacturing the leaf spring integrated core has the problems that the leaf springs are handled individually, so that they cannot be mass-produced and the manufacturing cost is high.

[0004]

An object of the present invention is to produce a large number of leaf spring integrated cores easily and in a short time.

[0005]

DISCLOSURE OF THE INVENTION The present invention includes a leaf spring and a movable member.
An iron core, and the leaf spring is a ring-shaped outer peripheral packing.
Part, a disk-shaped valve seal part having a central hole,
Connects the outer peripheral packing part and the valve seal part
The movable iron core is the leaf spring.
Of the leaf spring integrated type fixed to the valve sealing part
In the method for manufacturing A, before the plurality by pressing
A step of forming a spring holder having a leaf spring,
Set the spring holder in the mold and place it in the mold.
By pouring rubber into the outer packing
Rubber for packing is formed on both sides,
While forming the rubber for valve seal on one surface,
On the other surface of the valve seal part, a spring guide and seal
Forming a use rubber, the said spring holder
The other surface of the valve sealing portion of the plurality of leaf springs
Fixing the movable core to the spring holder,
A plurality of leaf springs by individually separating the plurality of leaf springs from the
And a step of obtaining a spring integrated core.
It

[0006]

1 (a) and 1 (b) are front plan views showing one leaf spring integrated core for explaining an embodiment of a method for manufacturing a leaf spring integrated core according to the present invention. FIG. 2 is a cross-sectional view taken along line AA, and FIG. 2 is a backside plan view of FIG. 1 (a), 1 (b) and 2 in FIG.
Is a leaf spring, and the leaf spring 1 has a ring-shaped outer peripheral packing portion 1a, as shown in a detailed plan view of FIG.
A circular valve sealing portion 1c having a central hole 1b and, for example, three radial arm portions 1d, 1e, 1f are provided. The three radial arms 1d, 1e, 1f connect the ring-shaped outer peripheral packing portion 1a and the valve seal portion 1c.

Reference numeral 2 is a movable iron core, and this movable iron core 2 is
A detailed plan view thereof is shown in FIG. 4 (a), and its BB cross-sectional view is shown in FIG. 4 (b), which is composed of a cylindrical portion 2a and a flange portion 2b fixed to one end of the cylindrical portion 2a. Has been done.
3 is a packing rubber, and this packing rubber 3 is
The leaf spring 1 is vulcanized and adhered to both surfaces of the ring-shaped outer peripheral packing portion 1a.

Reference numeral 4 is a rubber for valve sealing, and this rubber 4 for valve sealing is vulcanized and adhered to the front surface of the circular valve sealing portion 1c (see FIG. 3) of the leaf spring 1.
Reference numeral 5 denotes a spring guide / seal rubber. The spring guide / seal rubber 5 is vulcanized and adhered to the back side surface of the circular valve seal portion 1c (see FIG. 3) of the leaf spring 1. Through the center hole 1b (see FIG. 3) of the spring 1, it is integrally connected to the back side of the valve sealing rubber 4. The spring guide rubber 5 projects to the back side surface to act as a spring guide (not shown) and also to prevent the valve seal rubber 4 from coming off. 6a to 6f are welding points, and the leaf spring 1 and the movable iron core 2 are firmly integrated by welding the welding points 6a to 6f.

Next, the manufacturing process of the manufacturing method of the leaf spring integrated type core having the above structure will be described. First, as shown in FIG. 5, a plurality of, for example, four leaf springs 1 (see FIG. 3) are formed in the spring holder 7 by pressing. Incidentally, 7a is a through hole for positioning. This leaf spring 1 is 4
The individually formed spring holder 7 is set in a mold (not shown), and the rubber is poured into the mold (not shown), whereby the packing rubber 3 is provided on both surfaces of the ring-shaped packing portion 1a of the leaf spring 1. In addition to being vulcanized and adhered, the valve seal rubber 4 is vulcanized and adhered to one surface of the circular valve seal portion 1c of the leaf spring 1 and the other surface thereof is vulcanized and adhered.

Then, a plurality of movable iron cores 2 (see FIG. 4) prepared in advance by pressing are attached to the spring holder 7.
The back surface of the four leaf springs 1 formed on the surface (see FIG. 1B)
And the welded portions 6a to 6f are welded to each other to form a leaf spring integral type core in which the movable iron core 2 is firmly integrated with the leaf spring 1. And
The leaf spring integrated core is separated into four pieces by a separating means (not shown).

FIG. 6 is a front side plan view showing one leaf spring integrated core for explaining another embodiment of the method of manufacturing the leaf spring integrated core according to the present invention. This is an embodiment in which the spring 1 and the movable iron core 2 are firmly integrated. Hereinafter, this embodiment will be described. First,
As shown in FIG. 7, the valve sealing portion 1c of the leaf spring 1 is provided with, for example, three caulking portions 1g to 1i. Then, as shown in FIG. 6, the three caulked portions 1g of the leaf spring 1 are
1 to 1i can be swaged so as to wrap around the collar portion 2b of the movable iron core 2, and the movable iron core 2 can be firmly integrated with the leaf spring 1. Note that FIG. 8 shows a plurality of leaf springs 1 (see FIG. 7) provided with three caulking portions 1g to 1i, for example, four leaf springs 1 formed in the spring holder 7 by pressing. Then, the leaf spring integrated type core having this structure can be manufactured in a single manufacturing process.
In the case of individual production, it goes without saying that the same production as shown in the embodiment of FIG. 1 can be performed.

9 (a) and 9 (b) are front side plan views showing one leaf spring integrated core for explaining still another embodiment of the method for manufacturing the leaf spring integrated core according to the present invention. It is a figure and its CC sectional view, and is an Example which solidified the above-mentioned leaf spring 1 and the above-mentioned movable iron core 2 firmly by caulking means. Hereinafter, this embodiment will be described. First, as shown in FIGS. 10A and 10B, the movable iron core 2 is provided with, for example, three caulking portions 2c to 2e. Further, the valve seal 1c of the leaf spring 1 is provided with three notches 1j to 1l as shown in FIG. Then, after these three caulked portions 2c to 2e are fitted into the notches 1j to 1l of the leaf spring 1 as shown in FIG.
By caulking, the movable iron core 2 can be firmly integrated with the leaf spring 1. In addition, FIG. 12 shows a plurality of leaf springs 1 (see FIG. 11) provided with three notches 1j to 1l.
For example, four spring holders 7 are formed by pressing.

In the above description, four leaf springs 1 are provided in the spring holder 7 and four leaf spring integrated cores are manufactured in one manufacturing process. However, the present invention is not limited to this. It is needless to say that the same can be applied to a case where N pieces (2 pieces, 3 pieces, or 5 pieces or more) are provided and N pieces of leaf spring integrated cores are manufactured in one manufacturing step.

[0014]

As described above in detail, according to the method of manufacturing the leaf spring integrated core according to the present invention,
Moreover, there is an effect that a plurality of leaf spring integrated cores can be easily produced.

[Brief description of drawings]

FIG. 1 is a front side plan view showing one leaf spring integrated core for explaining an embodiment of a method for manufacturing a leaf spring integrated core according to the present invention and a sectional view taken along the line AA.

FIG. 2 is a backside plan view showing one leaf spring integrated core shown in FIG.

FIG. 3 is a detailed plan view of the leaf spring shown in FIG.

FIG. 4 is a detailed plan view of the movable core shown in FIG. 1 and its BB cross-sectional view.

FIG. 5 is a plan view of a spring holder used in an embodiment of a method of manufacturing a leaf spring integrated core according to the present invention.

FIG. 6 is a backside plan view showing one leaf spring integrated core for explaining another embodiment of the method for manufacturing the leaf spring integrated core according to the present invention.

FIG. 7 is a detailed plan view of the leaf spring shown in FIG.

FIG. 8 is a plan view of a spring holder used in another embodiment of the method of manufacturing a leaf spring integrated core according to the present invention.

9A and 9B are a front side plan view and a CC cross-sectional view showing one leaf spring integrated core for explaining still another embodiment of the method for manufacturing the leaf spring integrated core according to the present invention.

FIG. 10 is a detailed plan view of the movable iron core shown in FIG. 9 and a DD cross-sectional view thereof.

11 is a detailed plan view of the leaf spring shown in FIG. 9. FIG.

FIG. 12 is a plan view of a spring holder used in still another embodiment of the method of manufacturing a leaf spring integrated core according to the present invention.

[Explanation of symbols]

1 leaf spring 2 movable iron core 3 Rubber for packing 4 Rubber for valve seal 5 Rubber for spring guide and seal 6 welding points 7 Spring holder

Claims (2)

(57) [Claims] 1. A leaf spring and a movable iron core, wherein the leaf spring has a ring-shaped outer peripheral packing portion, a disk-shaped valve sealing portion having a central hole, the outer peripheral packing portion, and the valve. It has an arm portion that connects the sealing portion,
In the method of manufacturing a leaf spring integrated core, wherein the movable iron core is fixed to the valve sealing portion of the leaf spring, a step of forming a spring holder having a plurality of the leaf springs by press working, By setting the holder in the mold and pouring the rubber into the mold, the packing rubber is formed on both sides of the outer peripheral packing part, and the valve sealing rubber is formed on one surface of the valve sealing part. Along with
Forming a spring guide and sealing rubber on the other surface of the valve sealing portion, and fixing the movable core to the other surface of the valve sealing portion of the plurality of leaf springs of the spring holder. And a step of individually separating the plurality of leaf springs from the spring holder to obtain a plurality of leaf spring integrated cores. 2. The method for manufacturing a core integrated with a leaf spring according to claim 1, wherein the means for fixing the movable iron cores to the leaf spring is by welding or caulking.