JP3207365B2 - Manufacturing method of electromagnetic relay - 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 of manufacturing an electromagnetic relay having a quiet operation sound.

[0002]

2. Description of the Related Art In an electromagnetic relay, when a coil is energized, a predetermined plurality of contacts come into contact with each other by attracting an excited armature of an iron core. An operating sound is generated.

[0003] The operating noise is annoying depending on the environment in which the electromagnetic relay is used, and when the electromagnetic relay is mounted on a printed circuit board, the operating noise is transmitted to the printed circuit board via external terminals, and the operating noise is increased. Since there is a problem, an electromagnetic relay in which the operation noise is reduced has been conventionally provided. As shown in Japanese Utility Model Publication No. 3-12198, the applicant of the present application has also disclosed this type of silent electromagnetic relay. Is provided.

The silent electromagnetic relay provided earlier by the applicant of the present application has a double case structure as shown in FIG.

That is, in FIG. 7, reference numeral 1 denotes a first case, in which an electromagnetic relay main body is housed. 2
Is a terminal portion of the electromagnetic relay main body, which protrudes outside the first case 1.

[0006] Reference numeral 3 denotes a second case partially open, and the first case 1 is housed in the second case 3. Reference numeral 4 denotes a terminal plate for closing the opening of the second case with the terminal plate 4 to seal the inside of the second case 3. Reference numeral 5 denotes an external terminal, which penetrates the terminal plate 4, one end and the other end of which are inside and outside the second case 3.

Then, an elastic member 7 made of, for example, sponge is put on the outer wall of the first case 1 except for the surface from which the terminal portion 2 of the electromagnetic relay main body projects, and in that state, the terminal portion 2 of the electromagnetic relay main body is placed. And the inside of the second case of the external terminal 5 is connected by a flexible lead wire 6. Further, an elastic member 8 made of, for example, a sponge is placed on the surface of the electromagnetic relay main body from which the terminal portion 2 projects, and the elastic member 8 is interposed between the flexible lead wire 6 and the inner wall of the second case 3. In this state, the first case 1 is housed in the second case 3, and the terminal plate 4 seals the second case 3.

According to the electromagnetic relay having the structure as shown in FIG. 7 described above, the first case 1 accommodating the electromagnetic relay main body.
Are supported by the second case 3 with the elastic members 7 and 8 interposed therebetween so as to be in non-contact with the terminal plate 4 in the second case 3, so that operation noise is reduced, and ,
The operation sound is less likely to be transmitted to the printed circuit board via the external terminal 5.

[0009]

However, in the configuration of FIG. 7, after the elastic member 7 is put on the first case 1, the flexible lead wire 6 is directly connected between the terminal portion 2 of the electromagnetic relay main body and the external terminal 5. Therefore, there is a problem that the production of the electromagnetic relay is relatively complicated and is not suitable for automation of the production process.

In view of the above, an object of the present invention is to provide a method of manufacturing an electromagnetic relay in which the manufacturing process can be easily automated.

[0011]

In order to solve the above-mentioned problems, a method of manufacturing an electromagnetic relay according to the present invention comprises the steps of:
The first case in which the body is stored and a part of which is an opening,
A second case for accommodating the first case ;
Close the opening of the case and tightly close the second case.
Terminal plate for closing and unfolded in a plane
A method of manufacturing an electromagnetic relay using the conductive member.
The conductive member has one end side commonly connected to a frame portion.
The other ends, each extending in the same direction from
Connected to the plurality of external terminal portions and the frame portion,
The plurality of external terminal portions are separated from the other end by a predetermined distance.
A connection portion for connecting to the external terminal portion at the
And a terminal of the electromagnetic relay main body.
Body connection including a coupling portion electrically coupled to the main body.
And covering portions a plate-like conductive member having a planar shape development
In the conductive member in a state, the plurality of external terminal portions
The other end and the external terminal corresponding to the main body terminal coupling portion
Between the connecting part and the connecting part with a flexible conductive material.
A first step of pneumatically connecting , and after the first step,
The extension direction of the external terminal portion is a plane direction of the coupling portion.
The conductive member is bent so as to face
The first case may be attached to the connecting portion of the main body terminal connecting portion.
The terminal of the electromagnetic relay main body derived from
A second step of causing the main body after the second step
A third step of cutting the terminal coupling portions from said frame portion, before
After the third step, the main body terminal coupling portion and the electromagnetic relay are connected.
The second case from the side of the part connected to the terminal part of the appliance body;
In the first case, the flexible conductive material, the front
The main body terminal coupling portion and the external terminal portion of the conductive member
Accommodates at least a connection portion with the flexible conductive material
A fourth step of making the conductive layer conductive after the fourth step.
In a state where a part of the external terminal portion of the member is exposed to the outside,
The opening of the second case is closed by the terminal plate.
Then, the first case is combined with the second case and
In the second case in a non-contact state with the terminal plate.
A fifth step of supporting and after the fifth step
Then, the external terminal portion and the frame portion of the conductive member are cut off.
And a sixth step of cutting off .

[0012]

[0013]

[Action] In the manufacturing method of the electromagnetic relay having the above configuration ,
The description will be made by associating the reference numerals of the respective parts of the above-described embodiment.
A first portion 27 in which the conductive member 14 is coupled to the terminal portion 15 of the electromagnetic relay main body; and second portions 22a and 22b whose ends are exposed to the outside via the terminal plate 13 and serve as external terminals.
And a flexible conductive material 30 for connecting the first portion 27 and the second portions 22a and 22b. The first portion 27 of the conductive member is
By simply connecting to the terminal portion 15 of the electromagnetic relay main body derived from the above, the connection between the terminal portion 15 of the electromagnetic relay main body and the external terminal is completed. Then, the conductive member 14 is bent along the first case 11 to form the first case 1.
By accommodating the external terminal portion in the second case 12 together with the external terminal, the silent electromagnetic relay according to the present invention can be easily manufactured.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of an electromagnetic relay according to the present invention and a method for manufacturing the same will be described below with reference to the drawings.

FIG. 1 is a partial sectional view of an embodiment of an electromagnetic relay according to the present invention. In FIG. 1, 11 is the first
In this case, the main body of the electromagnetic relay is housed inside. Reference numeral 12 denotes a second case, a part of which is an opening, and has a size to accommodate the first case 11 therein. Reference numeral 13 denotes a terminal plate that closes the opening of the second case 12 to seal the second case 12. Reference numeral 18 denotes a sealing portion for sealing the terminal plate 13 to the second case 12. In this example, an epoxy resin is used as the sealant, for example.

Reference numeral 14 denotes a conductive member including a plate-shaped body 20 made of a conductive material having rigidity and a flexible conductive wire 30. Reference numeral 15 denotes a terminal portion of the electromagnetic relay main body that protrudes from the first case 11, and is fixed to the conductive member 14 by soldering, as described later. Reference numeral 15a is a terminal solder fixing portion formed by the soldering. 16 is a terminal solder fixing part 15 between the terminal part 15 of the electromagnetic relay main body and the conductive member 14.
a and an elastic member for ensuring non-contact with the second case 12. 17 is the terminal plate 13 and the first case 1
An elastic member for ensuring non-contact with the first member. These elastic members 16 and 17 are made of a foamed resin material in this example.

FIG. 2 shows a specific configuration of the conductive member 14. FIG. 2 is a view showing a state where the conductive member 14 is stretched flat. As described above, and as shown in FIG. 2, the conductive member 14 includes the plate-shaped body 20 made of a rigid conductive material and the flexible conductive wire 30. In this example, the flexible conductive wire 30 is formed of a mesh lead wire, for example, a flat wire.

The plate-like body 20 is, for example, a rectangular copper plate having a predetermined thickness cut out into a predetermined pattern.
It has a pattern shape as shown in FIG. 2 and FIG. 5A described later. That is, the plate-shaped body 20 is
A plurality of, in this example, four and three, external terminal portions 22a and 22b and a main body terminal coupling portion 23 are held in a pattern shape. In the case of this example, the external terminal portions 22a and 22b are provided at both ends in the longitudinal direction of the rectangular plate-like body 20, and the main body terminal coupling portion 23 is provided at the central portion in the longitudinal direction of the rectangular plate-like body 20. .

In the case of this example, a plurality of external terminal portions 22a
Each of the ends 22b and 22b is integrally formed on the plate 20 with one end exposed to the outside of the second case 12 connected to both short sides of the frame portion 21 in common. The other end of each of the plurality of external terminal portions 22 a and 22 b is separated from each other, and extends toward the main body terminal coupling portion 23 in the longitudinal direction of the plate 20. In this example, the distal ends 24a and 24b on the other end side of the external terminal portions 22a and 22b are not shown in FIG.
As shown in (A), the flexible conductive wire 30 is formed slightly larger so that it can be fixed by caulking.

The plurality of external terminal portions 22a and 22
Each of the tip portions 24a and 24b on the other end side of b
The plate 20 is arranged at the same position in the longitudinal direction. That is, they are linearly arranged in the short side direction of the plate-shaped body 20. As described later, this is because connection with a plurality of flexible conductive wires 30 can be performed simultaneously, and automation can be easily performed.

The main body terminal connecting portion 23 is
Are connected to both long side sides of the
It is formed integrally with. Body terminal connection 2
Reference numeral 3 denotes a portion for connection with the external terminal portion at a position separated by a predetermined distance d in the longitudinal direction of the plate-like body 20 from the tip portions 24a and 24b on the other end side of the plurality of external terminal portions 22a and 22b. 26a and 26b, and a connecting portion 27 connected to the connecting portions 26a and 26b and electrically connected to a terminal portion of the electromagnetic relay main body. Connection part 2
A plurality of 6a and 26b are independently provided corresponding to the plurality of external terminal portions 22a and 22b.

As shown in FIG. 5A, each of the connecting portions 26a and 26b for connecting to the external terminal portion is formed slightly larger so that the flexible conductive wire 30 can be fixed by caulking. In addition, each of the connecting portions 26a and 26b for connecting to the external terminal portion is linearly arranged at the same position in the longitudinal direction of the plate-like body 20, that is, in the short side direction of the plate-like body 20, and as described later. Book flexible conductive wire 3
It is formed so as to be able to be simultaneously connected to 0 and to be easily automated.

One end of the connecting portion 27 is one of the connecting portions 26a and 26b for connection to the external terminal portion, and the other end is the first connecting portion.
A plurality of independent pieces 2 connected to each of the terminal portions 15 of the electromagnetic relay main body led out of the case 11 to the outside.
7s. Each of the independent pieces 27 s is connected to both long sides of the frame portion 21 via the support pieces 25, so that the main body terminal coupling portion 23 is formed integrally with the plate 20.

The other end of each of the independent pieces 27s is hatched in FIG. 1 to be fitted to each of the terminal portions 15 of the electromagnetic relay main body which is led out of the first case 11. 27h are formed.

Then, as shown in FIG. 2, the external terminal portion 22a of the plate-shaped body 20 having the above-described pattern structure is formed.
And 22b on the other end side, 24a and 24b,
A connection part 26a for connecting the main body terminal coupling part 23 to an external terminal part,
26b, the flexible conductive wires 30 slightly longer than the distance d are respectively bridged, and both ends of the flexible conductive wires 30 are crimped by the tips 24a and 24b and the connecting portions 26a and 26b, and further welded. Fix it.

As described above, the plate member 20 and the flexible conductive wire 30 are integrally connected to each other to form the conductive member 14.
Is configured. The conductive member 14 is bent substantially at a right angle as shown in FIG. 3 at a bending position 28 shown by a dashed line in FIG. 2 so that the flexible conductive wire 30 of the conductive member 14 follows the side surface of the first case 11. To be. That is, the bending position 28 is the position of the flexible conductive wire 3
0 becomes a position along the side surface of the first case 11, and
The position is such that there is a space between the flexible conductive wire 30 and the side surface of the first case 11. That is, the side surface of the first case 11 and the flexible conductive wire 30 are configured to be in non-contact.

The terminal portion 15 of the electromagnetic relay main body of the first case 11 is joined by soldering at the joining portion 27 of the conductive member 14 to form the terminal solder fixing portion 15.
a is formed. FIG. 4 is a sectional view taken along line BB of FIG.

In this case, the distal end of the bent portion of the conductive member 14, that is, one end of the external terminal portions 22a and 22b penetrates the terminal plate 13 to become external terminals. The conductive member 14 is fixed between the terminal plate 13 and the second case 12 by a sealant at a sealing position indicated by a two-dot chain line 31 in FIG. Also,
As shown in FIG. 1, an elastic member 17 is interposed between the terminal plate 13 and the first case 11 so that the terminal plate 13 and the first case 11 are in a non-contact state. I have.

The frame portion 21 of the plate 20 constituting the conductive member 14 is cut off from the conductive member 14 at a position indicated by a broken line 29 in FIGS.

As described above, the electromagnetic relay according to the present invention is formed by assembling the flexible conductive wire 30 using the conductive member 14 mounted on the plate 20 in advance. Like the electromagnetic relay of
There is no need to directly connect a flexible conductive wire between the terminal portion 15 of the electromagnetic relay main body and the external terminal, which facilitates manufacturing.

In this case, since the terminal portion 15 of the electromagnetic relay main body is on the opposite side to the surface of the first case 11 facing the terminal plate 13, the conductive member integrated with the external terminal portions 22a and 22b is provided. 14 is relatively long, and the vibration of the operation sound propagating through the conductive member 14 via the terminal of the electromagnetic relay main body is attenuated and reduced before reaching the external terminals 22a and 22b.

In addition, a terminal solder fixing portion 15a of the conductive member 14 with the terminal portion 15 of the electromagnetic relay main body and the external terminal portion 2
2a and 22b are connected by a flexible conductive wire 30 made of a mesh wire, so that the vibration energy of the operation sound propagating through the conductive member 14 is absorbed by friction in the mesh wire, and the external terminal portion 22a , 22b are hardly transmitted to the vibration energy of the operation sound.
Therefore, when the electromagnetic relay of FIG. 1 is mounted on a printed circuit board, the operation sound of the electromagnetic relay main body is hardly transmitted to the printed circuit board, and the operation sound is not amplified.

Hereinafter, an embodiment of a method of manufacturing an electromagnetic relay according to the present invention will be described step by step with reference to FIGS.

First, in the method of manufacturing the electromagnetic relay according to this embodiment, a plate 20 made of the above-described copper plate is prepared as shown in FIG.

Next, the external terminal 22a of the plate 20
And 22b on the other end side, 24a and 24b,
A connection part 26a for connecting the main body terminal coupling part 23 to an external terminal part,
26b is bent into a U-shape for swaging as described later. A flexible conductive wire 30 that is slightly longer than the distance d between the connecting portions 26a and 26b so as to connect between the tip portions 24a and 24b facing the longitudinal direction of the plate 20 and the connecting portions 26a and 26b. Of the tip 24
a, 24b and the U-shaped portions of the connecting portions 26a, 26b.

Then, as shown in FIG. 5B, the U-shaped tip portions 24a and 24b and the connection portions 26a and
The flexible conductive wire 30 is attached to the plate-like body 20 by caulking 26b and the caulked portion is welded to form the conductive member 14.

In this example, the external terminals 22a, 22b are arranged so that the plate 20 is symmetrical in the longitudinal direction.
Are provided four by four, but the number of external terminals required in this embodiment may be three on the right side. Therefore, before or after the attaching step of the flexible conductive wire 30, unnecessary external terminal portions 22 b Is cut off.

Next, referring to FIG.
In addition to bending the entire plate 20 at the bending position indicated by, the frame portion 21 is further bent at the bending position indicated by the dashed line 28a. By this bending, the conductive member 1
4 is a main body terminal coupling portion 2 as shown in FIG.
3, while maintaining the planar state of at least the coupling portion 27, the extension direction of the external terminal portions 22a and 22b is
7 in a direction substantially orthogonal to the plane. FIG. 5C-2 shows the conductive member 14 in a bent state.
FIG.

The two bending positions indicated by the alternate long and short dash line 28 are positions where the distance between these two bending positions 28 is slightly longer than the width of the first case 11. And
By further bending the frame portion 28a at the bending position indicated by the one-dot chain line 28a, the rigid conductive material 30 is separated from the side surface of the first case 11 by utilizing the rigidity of the plate-like body 20.

Next, the terminal portions 15 of the electromagnetic relay main body that are led out of the first case 11 are cut into appropriate lengths, and each of the terminal portions 15 of the electromagnetic relay main body is separated from the independent piece of the coupling portion 27. It is inserted into the through hole 27h of 27s so as to slightly protrude. Then, as shown in FIG. 6 (D-1), the portion is soldered to form and fix the terminal solder fixing portion 15a.

Next, in the right side view of FIG. 6D-2, the support portion 25 of the connecting portion 27 to the frame portion 21 is cut at a cutting position indicated by a broken line 29.

Next, the first case 11 to which the conductive member 14 is fixed is attached to the terminal solder fixing portion 15 by the elastic member 16.
6A to 6C after covering the portions from the connection portion 26a to the connection portions 26a and 26b, which are the connection portions with the flexible conductive wire 30.
-1) and the right side view of FIG. 6 (E-2), the coupling portion 27 side is in the second case 12 in the second case 12.
To be located on the bottom side of the case 12. At this time, as shown in FIG. 6 (E-2), one end side of the external terminal portions 22a and 22b of the plate-shaped body 20, the short side of the frame portion 21, and the long side portion of the frame portion 21 Case 1 of 2
Outside of 2.

Next, as shown in the cross-sectional view of FIG. 6 (F-1), an elastic member 17 is placed on the upper surface of the first case 11 from the opening side of the second case 12 and then opened by the terminal plate 13. Close the part. Then, the seal portion 18 is formed with a sealant, and the external terminal portions 22 a and 22 b are fixed to the terminal plate 13 and the second case 12. Then, FIG.
In 2), the external terminal portions 22a and 22b of the plate 20 are separated from the frame portion 21 at a cutting position indicated by a broken line 29. Thereby, the electromagnetic relay shown in FIG. 1 is completed.

In the above manufacturing method, the conductive member 1
The terminal 15 of the electromagnetic relay main body, which is drawn out of the first case 11 after being bent, is connected to the conductive member 14 by soldering, but the terminal 15 of the electromagnetic relay main body is soldered to the conductive member 14. Then, the conductive member 14 may be bent after being connected and fixed.

In the above embodiment, the elastic member 1
The terminal part of the electromagnetic relay main body and the second case 12 are brought into non-contact with each other by using the elastic member 17 and the elastic member 17.
However, since the plate-like body 20 forming the conductive member 14 has rigidity, the external terminal portions 22a and 22b are sealed by the seal portion 18 to the terminal plate 1.
By specifying the positions to be fixed to the third and second cases 12, non-contact between the terminal solder fixing portion 15a and the second case 12 and non-contact between the terminal plate 13 and the first case 11 are realized. You can also.

However, when the elastic members 16 and 17 are used, the non-contact between the terminal solder fixing portion 15a and the second case 12 and the non-contact between the terminal plate 13 and the first case 11 are ensured. And the sound insulation effect of the double case structure can be further enhanced by the elastic members 16 and 17.

In the case of the structure using the elastic members 16 and 17, the conductive member 14 does not have rigidity enough to support the first case 11 reliably, and the terminal plate 13 and the first case 11 and non-contact between the terminal 15 of the electromagnetic relay main body and the second case 12 can be realized.

[0048]

As described above, the electromagnetic relay according to the present invention uses a plate-like body and a flexible conductive wire which are integrally formed in advance as a conductive member. Thus, an electromagnetic relay having a double case structure of a silent type that can be easily manufactured can be realized.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view for explaining an embodiment of an electromagnetic relay according to the present invention.

FIG. 2 is a diagram for explaining a main part of an embodiment of the electromagnetic relay according to the present invention.

FIG. 3 is a diagram for explaining a main part of an embodiment of the electromagnetic relay according to the present invention.

FIG. 4 is a sectional view taken along line BB of FIG. 3;

FIG. 5 is a diagram for explaining a method of manufacturing an electromagnetic relay according to the present invention.

FIG. 6 is a diagram for explaining a method of manufacturing an electromagnetic relay according to the present invention.

FIG. 7 is a cross-sectional view illustrating a conventional electromagnetic relay.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 1st case 12 2nd case 13 Terminal board 14 Conductive member 15 Terminal part of an electromagnetic relay main body 15a Terminal solder fixing part 16 Elastic member 17 Elastic member 18 Sealing part 20 Plate 21 Frame parts 22a, 22b External terminal part 23 Body Terminal Coupling Section 26a, 26b Connection Section with External Terminal Section 27 Coupling Section 28 Bending Position 29 Cutting Position 30 Flexible Conductive Wire

──────────────────────────────────────────────────続 き Continuation of front page (56) References JP-A-10-134690 (JP, A) JP-A-3-179629 (JP, A) JP-A-3-127424 (JP, A) JP-A-10-134 21811 (JP, A) JP-A-9-306323 (JP, A) JP-A-9-82196 (JP, A) JP-A-5-342296 (JP, A) JP-A-6-11245 (JP, U) Hikaru 2-70335 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) H01H 45/00-51/36

Claims (2)

(57) [Claims] A first case accommodating an electromagnetic relay main body, a second case accommodating a part of the first case, the second case accommodating the first case, and closing the opening of the second case. And a terminal plate for hermetically sealing the second case, and a conductive member developed in a plane. A method for manufacturing an electromagnetic relay using: a conductive member; A plurality of external terminal portions each extending in the same direction from one end side commonly connected to the plurality of external terminal portions separated from each other; and the other end side of the plurality of external terminal portions connected to the frame portion. a connecting portion between the external terminal portion of the position at a distance of Jo Tokoro and, along with being connected to the connecting portion,
A main body terminal coupling portion comprising: a coupling portion electrically coupled to a terminal portion of the electromagnetic relay main body.A plate-shaped conductive member comprising: A first step of electrically connecting the other end of the external terminal portion and a connecting portion of the main body terminal coupling portion with the corresponding external terminal portion by a flexible conductive material; After the step, the extension direction of the external terminal portion is
The conductive member is bent so as to face the plane direction of the coupling portion, and the terminal portion of the electromagnetic relay main body derived from the first case is electrically connected to the coupling portion of the main body terminal coupling portion. A second step of cutting the main body terminal coupling portion from the frame portion after the second step; and after the third step, the main body terminal coupling portion and the The first case, the flexible conductive material,
A fourth step of accommodating at least a connection part of the conductive member with the flexible conductive material of the main body terminal coupling part and the external terminal part, and, after the fourth step, the external terminal part of the conductive member. In a state where a part is exposed to the outside, the opening of the second case is closed by the terminal plate, and the first case is brought into non-contact with the second case and the terminal plate. A fifth step of supporting the inside of the second case in the state, and a sixth step of cutting the external terminal portion and the frame portion of the conductive member after the fifth step; Manufacturing method of electromagnetic relay consisting of. 2. In the fourth step, the first case, the flexible conductive material, and the main body of the conductive member are provided in the second case via an elastic member covering at least the coupling portion. A terminal coupling portion and at least a connection portion of the external terminal portion with the flexible conductive material are accommodated, and in the fifth step, an elastic member is interposed between the terminal plate and the first case. The method for manufacturing an electromagnetic relay according to claim 1, wherein: