JPH03276531A - Thin reed relay - Google Patents

Abstract

PURPOSE:To dispense with a reed support spring by extending the other end of the flat plate-shaped base section of the reed as a terminal section, and extending opposite sections opposed to each other across part of the terminal section on both yokes. CONSTITUTION:An opposite section 14d opposed to the terminal root section 11d of a reed 11 is extended from a lower base piece 14a, and an opposite section 13d is likewise extended from an upper base piece 13a. Both opposite sections 13d, 14d are opposed to each other across a terminal root section 11d which is part of the terminal section 11c of the reed 11. The opposite sections 13d, 14d of the base pieces 13a, 14a of yokes 13, 14 are opposed to the terminal section 11c (other end) of the reed 11, and the tip pieces 13c, 14c are opposed to fixed contacts 3, 4 respectively for magnetic coupling. No reed support spring is required.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a thin reed relay suitable for communication equipment, measuring equipment, etc.

[Conventional technology]

General reed relays (for example, JP-A-6O-1072
27), it was difficult to make it thin due to its basic structure. Therefore, a thin reed relay suitable for use in communication equipment, measuring equipment, etc., having the basic structure shown in Figs. 8 to 11 was proposed (for example, Utility Model Application No. 62-24455)
.

This device includes a coil frame 1 having a cylindrical portion 1a and flanges 1b and 1c on both sides thereof, a coil 2 wound around the cylindrical portion 1a of the coil frame 1, and contact surfaces 3a and 4a with a predetermined gap g. Between the two fixed contacts 3゜4 made of a magnetic material disposed on one of the alligator parts 1b of the coil frame 1 so as to face each other with A permanent magnet 5.6 inserted in an insulating manner, an insulating substrate 10 on which a terminal 7.8 electrically connected to each fixed contact 3.4 is implanted, and one end 11b of a flat base 11a are connected to each fixed contact point 3.4. contact surface 3a of the contact,
4a, and the other end 11 of the flat base 11a of the lead 11.
Two yokes 1 that magnetically couple c and each fixed contact 3.4
3.14.

More specifically, lead terminals 9 are also implanted in the insulating substrate 10 between the terminals 7 and 8. Further, a U-shaped lead support spring 12 is also implanted in the insulating substrate 10, and one leg piece and the lead terminal 9 are connected by welding or the like. The other end 11c of the lead 11 is fixed to the connecting piece of the lead support spring 12 by welding or the like at the other end 11c of the flat base 11a. Therefore, most of the lead support spring 12 is located inside the cylindrical portion 1a of the coil frame 1. As a result, one end ITo of the lead 11 can be displaced in the thickness direction using the base of the opposing leg of the lead support spring 12 or the fixed location of the other end 11c as a fulcrum.

Further, the yokes 13 and 14 have the same shape in plan, and include base pieces 13a, 14a, intermediate pieces 13b, 14b, and tip piece 1.
3c and 14C form a square C shape, base pieces 13a, 1
4a is a tip piece L3 in the longitudinal grooves 1d and ld of the other flange 1c.
c, 14c are in the recesses 1e, le of one flange 1b,
They are fitted and fixed respectively. Therefore, the base pieces 13a, 14
The end face of a and the other end 11c of the lead 11 are the other crocodile part 1c.
The tip pieces 13c, 14c and each of the fixed contacts 3.4 face each other via the thin portions of one of the flange portions 1b.

A coil terminal 15 is electrically connected to the coil 2 and is provided on the other flange 1c of the coil frame.

This thin reed relay has a flat base 11 of the lead 11.
Most of a is located inside the cylindrical part 1a of the coil frame 1, and only one end 11b corresponding to the movable contact protrudes from the cylindrical part 1a, so it can be made thinner than the conventional one. did it.

[Problem to be solved by the invention]

However, in the above-mentioned case, inside the cylindrical part of the coil frame,
Since the lead and the lead support spring are positioned in a movable state, the cylindrical part needs to have a certain size. Therefore, if the overall size is kept constant, the space for winding the coil becomes small.

Further, since it is necessary to secure the lead and the lead support spring by welding or the like, this work is troublesome and causes an increase in magnetic resistance in some areas. Furthermore, the facing area of the lead and each yoke is also small, which causes problems such as increased magnetic resistance at that location.

The present invention has been made in view of the above circumstances, and its purpose is to provide a thin reed relay that improves magnetic efficiency without increasing the overall size and has a simplified structure.

[Means for Solving the Problem] In order to solve the problem, the thin reed relay according to claim (1) includes a coil frame having a cylindrical portion and a crocodile portion on both sides thereof, and a coil frame wound around the cylindrical portion of the coil frame. The coil to be rotated, two fixed contacts made of magnetic material arranged on one flange of the coil frame so that the contact surfaces face each other with a predetermined gap, and the ends of the re-fixed contacts excluding the contact surfaces. A permanent magnet is inserted insulatively between them, an insulating substrate is embedded with a terminal electrically connected to each fixed contact, and one end of a flat base is alternately brought into contact with and separated from the contact surface of each fixed contact. A lead made of a magnetic material, most of whose flat base is located inside the cylindrical part of the coil frame, and two yokes that magnetically connect the other end of the flat base of the lead to each fixed contact. In the thin reed relay, the other end of the flat base of the lead is connected as a terminal part, and opposing parts are connected to both yokes that face each other with a part of the terminal part interposed therebetween. It is structured as follows.

The thin reed relay according to claim (2) includes a coil frame having a cylindrical portion and flanges on both sides thereof, a coil wound around the cylindrical portion of the coil frame, and contact surfaces facing each other with a predetermined gap therebetween. Two fixed contacts made of magnetic material arranged on one flange of the coil frame, a permanent magnet inserted insulatively between the ends of both fixed contacts except for the contact surfaces, and each fixed contact. The main part of the flat base is located inside the cylindrical part of the coil frame so that one end of the flat base alternately contacts and separates from the contact surface of each fixed contact. A thin reed relay having a lead made of a magnetic material, and two yokes that magnetically connect the other end of the flat base of the lead to each fixed contact. The ends are arranged in series as a terminal part and as a bent part at a position different from the terminal part, and these are configured to face each of the yokes.

[Effect]

According to the thin reed relay according to claim (1), there is no need for a reed support spring that was required in the conventional one, and the cylindrical portion of the coil frame can be made smaller accordingly, resulting in a larger coil winding space ( This naturally eliminates the need for welding.Furthermore, since the facing parts of both yokes face each other with a part of the terminal part of the lead in between, it is possible to increase the facing area between the lead and the yoke.

According to the thin reed relay according to claim (2), there is no need for a reed support spring which is required in the conventional relay, and the cylindrical portion of the coil frame can be made smaller accordingly, resulting in a larger space for winding the coil. This naturally eliminates the need for welding.

In addition, since the terminal portion and the bent portion of the lead face each yoke, the opposing area between the lead and the yoke can be increased.

〔Example〕

Hereinafter, a first embodiment of the present invention will be described based on FIGS. 1 to 4. Note that members having the same basic functions as those of the conventional example described above are given the same reference numerals.

1 is a coil frame, which has a cylindrical part 1a and flanges 1b and l on both sides thereof.
It has c. The cylindrical portion 1a has a rectangular cross section, and its inner space is made as small as possible within a range that allows a predetermined operation of the lead, which will be described later.

One flange part ib has a recess le into which a yoke, which will be described later, is fitted;
le, and an accommodating part If that accommodates members such as fixed contacts. This accommodating portion 1f communicates with the inner space of the cylindrical portion 1a, and is open on the outside in the axial direction.

The other flange 1c is provided with a coil terminal 15, and
It has vertical grooves 1d and ld into which the yoke fits. This vertical groove 1d
, lc3 (upper side in the figure) has a U-shape in plan view, and is located further outward in the axial direction than the other side (lower side in the figure). and coil terminal 15
is provided so as to protrude from the side surface in the width direction.

A coil 2 is wound around the cylindrical portion 1a.

3.4 is a fixed contact, which is made of a magnetic material and has a rectangular parallelepiped-shaped base 3b having a length equal to the inner dimension of the housing part 1f of the coil frame 1.
, 4b, and central portions 3c, 4c protruding from the center of the base portions 3b, 4b.

The end surfaces of the central portions 3c, 4c are conductive plated to become contact surfaces 3a, 4a. The fixed contacts 3 and 4 are housed in the housing portion If of the coil frame so that the contact surfaces 3a and 4a face each other with a predetermined gap g interposed therebetween.

5.6 is a permanent magnet, which has a rectangular parallelepiped shape and is magnetized in the vertical direction in the figure, and is attached to the contact surfaces 3a, 4a of both fixed contacts 3.4.
It is insulatively inserted between the ends except for the For this insulation, an insulating sheet is inserted between the permanent magnet 5.6 and the fixed contact 3.4, or the permanent magnet 5.6 itself is made of an insulating permanent magnet material.

1O is an insulating substrate, which is made of synthetic resin and has a base 10a that fits almost tightly into the accommodating part if of the coil frame 1, and a fixed contact 3.
．． 4 and the protrusions 10b and 1 for positioning the permanent magnets 5 and 6.
It is molded into a shape with 0b. During this molding, terminals 7.8 electrically connected to each fixed contact 3.4 are implanted by simultaneous molding. End surfaces 7a and 8a on the implanted side of the terminals 7.8 are exposed on the inner surface of the base 10a and welded to the fixed contact 3.4.

11 is a lead, which is made of a magnetic thin plate material and is connected to a flat base 11a.
and a terminal portion Lie corresponding to the other end thereof, forming an L-shape. In this terminal portion 11c, the terminal root portion lid on the side closer to the flat plate-like base portion 11a is formed to be wider, and the terminal tip portion lie is formed in a narrower width. Fixed to IC. The flat base 11a penetrates through the cylindrical part 1a so that most of it is located inside the cylindrical part 1a of the coil frame 1, and its one end 11b is located at a predetermined area formed by the contact surfaces 3a and 4a of both fixed contacts 3 and 4. It has entered the gap g. - The end 11b is bifurcated, and both surfaces thereof are conductive plated to form twin contact surfaces 11f and 11g. As a result, one end 11b of the lead 11 can be displaced in the thickness direction, and therefore the contact surfaces 11f and 11g are the contact surfaces 3a and 4a of each fixed contact.
It becomes possible to alternately approach and separate.

Reference numerals 13 and 14 denote yokes, which are made of magnetic plates and are formed into a rectangular C-shape by base pieces 13a, 14a, intermediate pieces 13b, 14b, and flat plate-like tip pieces 13c, 14c. The base pieces 13a, 14a are fitted into the longitudinal grooves 1d, Id of the other flange 1c, and the tip pieces 13c, 14c are fitted into the recesses 1e, le of one flange 1b, respectively. Therefore, in both yokes 13 and 14, the upper one in the figure has a slightly larger planar shape, that is, each tip piece 13c,
14c are in a superposed relationship with each other, but the upper base piece 13
a will be located outward from the lower base piece 14a.

The terminal portion 11c of the lead 11 is located approximately midway between the vertical pieces of both base pieces 13a and 14a in plan view.

What is important about such a yoke 13.14 is that the facing part 14d facing the terminal base Lid of the lead 11 is connected from the lower base piece 14a, and the facing part 13d is also connected from the upper base piece 13a. This is what is being done. As a result, the opposing portions 13d and 14d face each other with the terminal base portion 11d, which is a part of the terminal portion 11C of the lead 11, interposed therebetween. Therefore, the yoke 13. ．． 14, the opposing parts 13d and 14d of the base pieces 13a and 14a face the terminal part 11c (other end) of the lead 11, and the tip pieces 13c and 14c face each fixed contact 3.4, respectively. magnetically coupled.

As shown in FIG. 1, the relay main body composed of such members includes protruding terminals 7, 8, . lie.

15, 15 are bent at the position shown by the dashed line and housed in a casing (not shown) so that their tips are exposed.

In such a thin reed relay, the permanent magnet 5,
The magnetic flux of 6 is as follows: Permanent magnets 5, 6 → Fixed point 3 → Predetermined gap g
(The other end 11b of the lead 11, that is, the contact surface 11f,
11g)→fixed contact 4→permanent magnets 5, 6, permanent magnets 5, 6→yoke 13 (including those via fixed contact 3)→opposing part 13d of the yoke→root of lead terminal The liquid flows along the following paths: lid → lead 1 → contact surface 11g of the lead → fixed contact 4 → permanent magnets 5 and 6, respectively.

Therefore, when the coil 2 is not energized, the lead 11 is attracted to the fixed contact 4 and the contact surface 11g is the contact surface 4 of the fixed contact.
contact a. When the contact surface 11f of the lead is brought into contact with the contact surface 3a of the fixed contact 3 from this state, the permanent magnet 5.
The coil 2 is energized so that a magnetic flux flows in a direction that cancels out the magnetic flux of the coil 2.

Next, a second embodiment of the present invention will be described based on FIGS. 5 to 7. This one differs from the previous embodiment in the shape of the leads, and the shapes of the coil frame and yoke are determined accordingly. Therefore, since the members other than these are the same as those in the previous embodiment, they are given the same reference numerals and detailed explanations will be omitted.

The lead 3I includes a flat base 31a, and a terminal portion 31c and a terminal portion 31 that are connected to each other as a portion corresponding to the other end of the flat base portion 31a.
The bent portions 31h and 31j are located at different positions from the bent portions 31h and 31j. Specifically, the flat base portion 31a has approximately the same length as in the previous embodiment, but the base portion 31k thereof is wider. Further, in the figure, the bent portion 31h, which is continuously bent upward, has approximately the same width as the flat base portion 31a and is located approximately at the center. In the terminal portions 31c which are bent and arranged downward, the terminal root portion 31d on the side closer to the flat base portion 31a is formed to have a wide width, and the terminal tip portion 31e is formed to have a narrow width, and is located biased to one side. The bent portion 31j, which is also continuously bent downward, is located on the opposite side from the terminal portion 31c and is approximately at the same height as the terminal root portion 31d. And the terminal part 31c and/or the bent part 31
h, 31j is the other crocodile part 21c of the coil frame 21, which will be described later.
Fixed. Further, one end 31b of the flat base 31a is bifurcated, and both surfaces thereof are conductive plated to form twin contact surfaces 31f and 31g.

In this way, the yokes 23 and 24 corresponding to the portion 31 are the base pieces 23a and 24a and the intermediate piece 2, each having a cross-sectional shape.
3b.

241] and flat tip pieces 23c and 24c form an angle C.
Although it is formed in a letter shape, the planar shape is the same.

In other words, all the pieces are in a superposed relationship with each other. In addition, an opposing portion 23 is provided continuously from the base pieces 23a and 24a.
d and 24d are also not very high, and should be approximately the same height. However, the lower opposing portion 24d is made wide enough to reliably face the terminal root portion 31d and the bent portion 31j.

In addition, the coil frame 21 having the cylindrical portion 21a and the flanges 21b and 21c has vertical grooves 2 in the upper and lower sides of the other flanges 21c so that the yokes 23 and 24 described above can be disposed in a mutually overlapping relationship.
1d and 21d are formed at positions where they will be polymerized.

The base pieces 23a, 24a of the yokes 23, 24 fit into the vertical grooves 21d, 21d of the other flange 21c, and the tip piece 2
3c, 24c are recesses 21e of one flange 21b,
21e, respectively, and the terminal base portion 31d, bent portion 31j, and bent portion 31h of the lead 31 are
It faces the opposing parts 23d and 24d of the yokes 23 and 24.

Therefore, in the yokes 23 and 24, the base pieces 23a and 24a are connected to the other ends of the leads 31 (terminal portions 31c and bent portions 31h and 31
j), and the tip pieces 23c and 24c are each fixed contact 3.4,
They will face each other and will be magnetically coupled.

The relay body, which is made up of these various members, has protruding terminals as in the previous embodiment. , 8.31e.

15, 15 are bent and housed in a casing (not shown) so that their tips are exposed. Furthermore, the flow of magnetic flux, operation, etc. are substantially the same as in the previous embodiment.

〔Effect of the invention〕

According to the thin reed relay according to claim (1), there is no need for a reed support spring that was required in the conventional one, and the cylindrical portion of the coil frame can be made smaller accordingly, resulting in a larger coil winding space ( This naturally eliminates the need for welding.Furthermore, since the facing parts of both yokes face each other with a part of the terminal part of the lead in between, it is possible to increase the facing area between the lead and the yoke.

According to the thin reed relay according to claim (2), there is no need for a reed support spring which is required in the conventional relay, and the cylindrical portion of the coil frame can be made smaller accordingly, resulting in a larger space for winding the coil. This naturally eliminates the need for welding.

In addition, since the terminal portion and the bent portion of the lead face each yoke, the opposing area between the lead and the yoke can be increased. Furthermore, since the yoke can be made smaller than the one described in claim (1), it is more suitable for miniaturization.

Therefore, it is possible to obtain an Al12 reed relay that improves magnetic efficiency without increasing the overall size and has a simplified structure.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing the first embodiment of the present invention, Fig. 2 is an exploded perspective view with the coil omitted, Fig. 3 is a partially exploded perspective view thereof, and Fig. 4 is a sectional view thereof. , FIG. 5 is an exploded perspective view showing a second embodiment of the present invention, and FIG.
The figure is a sectional view, FIG. 7 is a perspective view of the lead, FIG. 8 is a perspective view of a conventional example with the coil omitted, and FIG. 9 is a perspective view of the lead.
The figure is an exploded perspective view with the coil omitted, and Figure 10 is
FIG. 11 is an exploded perspective view of the main parts and a sectional view thereof. 1.=coil frame, LA-cylindrical section, lb, lc-flange section, 2.
- Coil, 3.4... Fixed contact, 3a, 4a-... Contact surface, 5.
6--permanent magnet, io--insulating substrate, 7.13--terminal, 11--lead, 1la--flat base, llb--...
One end, 11cm・Terminal part (other end), 11d-...Terminal base, lle...One terminal tip, t
o, l1g - contact surface, 13.14 - = yoke, 13d, 14d - opposing part,
15...Coil terminal, g--predetermined gap. 1 Figure 2 Figure 3 g $411 Figure 5 4 1611 117 Figure 8 gl 119 飄 13 111 Figure

Claims (2)

[Claims] (1) A coil frame having a cylindrical part and flanges on both sides thereof, a coil wound around the cylindrical part of the coil frame, and one flange of the coil frame so that the contact surfaces face each other with a predetermined gap between them. Two fixed contacts made of magnetic material are arranged, a permanent magnet is insulated between the ends of both fixed contacts except for the contact surfaces, and a terminal is electrically connected to each fixed contact. a lead made of a magnetic material, the majority of the flat base being located inside the cylindrical part of the coil frame so that one end of the flat base alternately comes into contact with and away from the contact surface of each fixed contact; two yokes that magnetically couple the other end of the flat base of the lead and each fixed contact;
In the thin reed relay, the other end of the flat base of the lead is connected as a terminal part, and the two yokes are connected with opposing parts facing each other with a part of the terminal part interposed therebetween. A thin reed relay featuring (2) A coil frame having a cylindrical part and flanges on both sides thereof, and a coil wound around the cylindrical part of the coil frame, and one flange of the coil frame so that the contact surfaces face each other with a predetermined gap between them. Two fixed contacts made of magnetic material are arranged, a permanent magnet is insulated between the ends of both fixed contacts except for the contact surfaces, and a terminal is electrically connected to each fixed contact. a lead made of a magnetic material, the majority of the flat base being located inside the cylindrical part of the coil frame so that one end of the flat base alternately comes into contact with and away from the contact surface of each fixed contact; two yokes that magnetically couple the other end of the flat base of the lead and each fixed contact;
In the thin reed relay, the other end of the flat base of the lead is connected as a terminal part and as a bent part at a position different from the terminal part, so that these face each of the yokes. A thin reed relay that is characterized by: