JPH0429450Y2 - - Google Patents

Description

[Detailed Description of the Invention] Technical Field The present invention relates to a contact device suitably used in electromagnetic relays and the like.

BACKGROUND ART FIG. 7 is a perspective view showing the shape of a prior art contact. The contact point 61 has a cross section 6 perpendicular to its axis a.
1a consists of a so-called semi-cylindrical contact surface 61b which is curved in an outwardly convex arc shape, and flat portions 61c continuous to both ends of the contact surface 61b in the circumferential direction, and has a uniform shape in the direction of the axis a. The flat surface 61c of the contact 61 is integrally fixed to the contact plate 62 by welding or the like to form a contact member 63.

FIG. 8 is a perspective view showing the shape of a contact according to another prior art. A first contact 67a and a second contact 6 are connected to the end 66a of the contact plate 66 with the contact plate 66 in between.
7b are integrally fixed by welding or the like,
A contact member 68 is formed. A contact member 68 having a structure in which contacts 67a and 67b are provided on the front and back sides of the contact plate 66 is used, for example, as a movable contact plate for circuit switching.

The contact points shown in FIG. 7 or 8 as described above are each formed in a so-called semicylindrical shape, with the contact surface convexly curved outward.
Although it has the advantage of better contact properties compared to a flat contact surface, the contact area is limited to a small part of the contact surface, and the rest is the part that does not actually make contact. , it was a useless part that was not used as a contact surface. Moreover, the contacts are designed to prevent deterioration due to repeated use over a long period of time, and to improve arc resistance and environmental resistance.
Since the material used is a noble metal such as gold (Au), the material cost is high and the contact structure is not economical. Therefore, it was inevitable that a contact device formed using such a contact point would also have an increased production cost.

Purpose Therefore, the purpose of the present invention is to solve the above-mentioned technical problems, reduce the amount of contact material required compared to conventional ones, and reduce production costs without deteriorating contact performance. The purpose of the present invention is to provide a streamlined contact device using contacts.

Embodiment FIG. 1 is a perspective view showing the shape of a contact point according to an embodiment of the present invention. The contact point 1 consists of a contact surface 1b whose axis-perpendicular cross section 1a is curved in an outwardly convex arc, and a pair of flat portions 1c and 1d that are connected to both ends of the contact surface 1b in the circumferential direction and are substantially perpendicular to each other. , has a uniform shape in the axial direction. One flat portion 1d is fixed to the end portion 2a of the contact plate 2 by welding or the like. The shape of the contact 1 of this embodiment is different from that of the contact according to the prior art described above, and the feature is that the virtual line A
Therefore, the amount of material required for the contact 1 is approximately 1/2 that of the prior art.

FIG. 2 is a perspective view showing the arrangement of contacts in the embodiment of the present invention. The first contact 3 is fixed to the end 4a of the first contact plate 4, and the second contact 5 is fixed to the end 6a of the second contact plate 6 opposite to the first contact plate 4.
is fixed to. Each contact 3, 5 has its axis B,
C are fixed to the contact plates 4 and 6 so as to be orthogonal to each other, thereby realizing a so-called crossbar type contact device 7 and improving the contact performance between the contacts. In arranging such a pair of opposing contact plates 4 and 6, in this embodiment, the first contact plate 4
and the second contact plate 6, respectively, extending in the longitudinal direction L1 and L2 intersect at a first angle α (α<45°),
L3 and L4, which are the widthwise extensions of the first contact plate 4 and the second contact plate 6, are arranged to intersect at a second angle β (β<45°). Therefore, the pair of contacts 3,
5, the curved contact surfaces 3b and 5b are in complete contact with each other, and the crossbar contact method is realized as described above, so the contact performance is improved even though the contact material is reduced. do.

FIG. 3 is a side view showing the shape of a contact according to an embodiment of the present invention. What should be noted is that the first contact 8 and the second contact 9 are integrally fixed to the end 10a of the contact plate 10 with the contact plate 10 in between by welding or the like. A contact member 11 having a structure in which a pair of contacts 8 and 9 are provided on the front and back sides of one contact plate is suitably used, for example, as a movable contact for circuit switching.

FIG. 4 is a partially cutaway perspective view showing the structure of an electromagnetic relay using contacts according to the present invention. The electromagnetic relay 29 includes a movable contact plate 14 to which a pair of movable contacts 12 and 13, which are realized by the above-described embodiment, are fixed, and a movable contact plate 14 that is arranged in the longitudinal direction of the movable contact plate 14 when the movable contact plate 14 is always in a stationary position. a predetermined first angle γ with respect to the width direction of the movable contact plate 14, and a predetermined second angle δ with respect to the width direction of the movable contact plate 14.
A pair of fixed contact plates 15 and 16 facing each other are arranged on an insulating base 17.
Fixed contacts 18 and 19 are respectively fixed to the movable contacts 12 and 13 facing each other so that their axes are perpendicular to each other. As a result, the contact device 20 of the electromagnetic relay 11 realizes a crossbar contact type. Movable contact plate 14, fixed contact plate 1
5 and 16, the coil 23 wound around the coil bobbin 21, and the like are individually connected to a plurality of terminal members 22 through conductive wires (not shown) or directly through the insulating substrate 17.

The coil 23 of the electromagnetic relay is energized, and the coil 2
3 is excited, the armature 24 and the card material 25
The movable contact plate 5 is angularly displaced in the direction shown by the arrow C by a driving member such as the contact surface 13b of the movable contact 13 and the contact surface 19b of the opposing fixed contact 19.
The contact points 13 and 19 are in contact with each other, and conduction occurs between both contacts 13-19. When the coil 23 is demagnetized, the movable contact plate 14 returns to its original resting position, and the movable contact 12 and fixed contact 18
and make contact with the crossbar.

FIG. 5 is a perspective view showing the shape of a contact point used in another embodiment of the present invention. It should be noted that the contact 31 according to this embodiment has a cross section that is about 1/1 that of the so-called semicylindrical contact described in the prior art section.
It is made of the material No. 2 and is cut so as to form a right-angled trapezoid when viewed from the contact surface side. Therefore, although the part surrounded by the imaginary line D is missing, the wide end 31a of the contact surface
If the other side is brought into contact with the other party's contacts (not shown), the contact performance will not be impaired in any way.

FIG. 6 is a perspective view showing the arrangement of contacts in another embodiment of the present invention. In FIG. 6, parts corresponding to those in FIG. 5 above are given the same reference numerals. The first contact 31 is fixed to the end 32a of the first contact plate 32, and the second contact 33 is fixed to the end 32a of the first contact plate 32.
The contact plate 34 is fixed to the end 34a of the second contact plate 34 facing the contact plate 34. Each contact 31, 33 has its axis G, H
are fixed to the contact plates 32 and 34 so as to be perpendicular to each other, thereby realizing a so-called crossbar type contact device 36 and improving the contact performance between the contacts. A pair of contact plates 3 facing each other like this
2 and 34, in this embodiment, M1 and M2, which extend the first contact plate 32 and the second contact plate 34 in the longitudinal direction, respectively, form a first angle ζ (ζ<
45°), the first contact plate 32 and the second contact plate 3
Lines M3 and M4, which are obtained by extending 4 in the width direction, are arranged to intersect at a second angle η (η<45°). Therefore, since the pair of contacts 31 and 33 cross-contact with the other contact on the wide end portions 31a and 33a of the contact surface, contact performance does not deteriorate even though the contact material is reduced. In the above-described embodiment, the arrangement of the pair of contacts 31 and 33 facing each other has been described, but for example, contacts may be fixed to the front and back of the first contact plate 32 to form switching contacts. Good too. Further, in the above embodiment, although fixed contacts and movable contacts were not determined, the first contact plate 32 may be a movable contact, and the second contact plate 34 may be a movable contact plate.

Effects As described above, the contact device according to the present invention includes a first contact, a first contact plate to which the first contact is fixed, a second contact, and a second contact plate to which the second contact is fixed. a line extending in the longitudinal direction of the second contact plate and the second contact plate, respectively, intersect at a first angle;
Lines extending in the width direction of the contact plate and the second contact plate were arranged so as to intersect at two angles.

Each contact has a shape that uses less material than conventional contacts. In addition, when arranging the opposing contacts, the axes of the contacts are orthogonal to each other, so a crossbar contact method is realized, which has excellent contact performance and reduces the amount of material used. It is possible to realize a contact device that is capable of

[Brief explanation of drawings]

Fig. 1 is a perspective view showing the shape of a contact in an embodiment of the invention, Fig. 2 is a perspective view showing the arrangement of contacts in an embodiment of the invention, and Fig. 3 is another embodiment of the invention. FIG. 4 is a side view showing the shape of a contact according to an example, and FIG. 4 shows the structure of an electromagnetic relay using a contact according to an embodiment of the present invention.
FIG. 5 is a perspective view showing the shape of a contact point used in another embodiment of the present invention; FIG. 6 is a perspective view showing another embodiment of the present invention;
FIG. 7 is a perspective view showing the shape of a contact according to the prior art, and FIG. 8 is a perspective view showing the shape of a contact according to another prior art. 1, 3, 5, 8, 9, 61, 67a, 67b...
...Contacts, 2, 4, 6, 32, 34, 62, 66...
...Contact plate, 12,13...Movable contact, 14...Movable contact plate, 15,16...Fixed contact plate, 18,1
9... Fixed contact, 29... Electromagnetic relay.

Claims (1)

[Claims for Utility Model Registration] A first contact, a first contact plate to which the first contact is fixed, a second contact, and a second contact plate to which the second contact is fixed; The lines extending the first contact plate and the second contact plate in the longitudinal direction intersect at the first angle, and the lines extending the first contact plate and the second contact plate in the width direction intersect at the second angle.
A contact device characterized in that the contact devices are arranged so as to intersect at an angle of.