JPH076599Y2 - relay - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a relay.

(Prior Art) A conventional relay is shown in FIG. The yoke 102 is fixed to the base 100, and the terminals 104 and 106 are press-fitted and fixed to the base 100. Electromagnetic coil 108 is yoke 102 and base 100
And one end of the core 110 is caulked and fixed to the yoke 102. The coil bobbin 112 is prevented from coming off by a flange portion 114 formed at the other end of the core 110.

(Problems to be Solved by the Invention) However, the above-described conventional relay has the following problems.

Coil bobbin 112, core 110, yoke 102, terminal 104,
Since the 106 and the base 100 are independent parts, respectively, the number of parts increases and the cost increases. During assembly, the core 110 and the yoke 102 are caulked and fixed at the portion 116, the yoke 102 and the terminal 106 are spot-welded at the portion 118, and the yoke 102 and the base 100 are caulked and fixed at the portion 120. The terminals 104 and 106 are pressed into the base 100. Therefore, the number of assembling steps is increased, which causes deterioration of work efficiency and high cost.

Therefore, an object of the present invention is to provide an inexpensive relay having a small number of parts and a small number of assembly steps.

(Means for Solving the Problems) In order to solve the above problems, the present invention has the following configuration.

That is, at least a first composite member integrally formed with a yoke and a first terminal connected to the core of the electromagnetic coil and the circuit, and a second terminal connected to the circuit,
At least the coil bobbin of the electromagnetic coil and a second composite member integrally formed of resin are formed, and at least the first composite member and the second terminal are combined into the second composite member. It is characterized by being insert-molded.

(Operation) The operation will be described.

The core, the yoke, and the first terminal are integrally formed as a first composite member in advance, and when the second composite member including the coil bobbin and the base is resin-molded, the first composite member and the second terminal are formed. It suffices if insert molding is performed, and the assembly process can be reduced.

(Embodiment) Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 shows an embodiment of a relay according to the present invention. In addition,
The relay case is omitted.

In the figure, 10 is a first composite member, and a core portion 12 and a yoke portion 14 extending in an L-shape at the upper end of the core portion 12,
A first terminal portion 14 extending downward from the lower end of the core portion 12 is integrally formed. The first composite member 10 is made of a metallic material having conductivity and magnetism.

Reference numeral 18 denotes a strip, which is formed of a thin metal plate having elasticity and conductivity. The upper end of the strip 18 is fixed to the yoke portion 14. On the other hand, the lower end of the strip 18 is a free end and the contact 20 is provided. In addition, strips
An L-shaped magnetic body 22 is fixed in the middle of the yoke 18, and when the electromagnetic coil 24 described later is energized, the yoke portion 14
A magnetic circuit is closed between the core portion 12 and the magnetic body 22. The tip of the magnetic body 22 is usually the core portion due to the spring property of the strip 18.
Although separated from 12, the magnetic body 22 is attracted to the core portion 12 when the electromagnetic coil 24 is energized.

Reference numeral 26 is a second composite member in which the coil bobbin portion 28, the base portion 30 and the like are integrally formed of resin. Coil bobbin section
The core portion 12 of the first composite member 10 is inserted into the center hole 32 of the coil 28, and the coil bobbin portion 28 is wound with an electric wire to form the electromagnetic coil 24. In addition, the first composite member 10
The lower end portion of the first terminal portion 16 of the first terminal portion 16 projects into the inner space 34 of the base portion 30.

A second terminal 36 is formed of a conductive material, and a contact 38 is provided at a position facing the contact 20. The contacts 20 and 38 are normally not in contact with each other, and the electromagnetic coil 24
When the magnetic material 22 is energized to be attracted to the core portion 12, it comes into contact with the magnetic material 22. The lower end portion of the second terminal 36 also projects into the inner space 34 of the base portion 30. Therefore, the contacts connected to each other close the circuits connected to the first terminal portion 16 and the second terminal 36.

In addition, 40 is a stopper portion provided upright on the base portion 30,
When the electromagnetic coil 24 is energized and the contacts 20, 38 are in contact with each other, the electromagnetic coil 24 is de-energized and the strip 18
Is provided to regulate the amount of movement of the strip 18 when moving to the left due to its own springiness.

Next, a method of manufacturing this relay will be described. When the second composite member 26 is resin-molded, insert molding is performed by arranging the first composite member 10 and the second terminal 36 or the like having the fixed contact 38 in the mold. As a result, the first composite member 10
Thus, the second composite member 26, the second terminal 36, etc. can be integrally formed. Next, an electric wire is wound around the coil bobbin portion 28 formed by insert molding to form the electromagnetic coil 24. After that, the strip 18 to which the magnetic body 22 and the contact 20 are attached may be fixed to the yoke portion 14.

Although various preferred embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and many modifications can be made without departing from the spirit of the invention. is there.

(Effect of the Invention) With the relay according to the present invention, not only can the coil bobbin, the base, etc. be integrally molded by insert molding, but the core, yoke, terminal, etc. can be mounted in one step. Become. As a result, not only the number of parts constituting the relay can be extremely reduced, but also the number of assembling steps can be reduced, and the cost of the relay can be reduced.

[Brief description of drawings]

FIG. 1 is a side sectional view showing an embodiment of a relay according to the present invention, and FIG. 2 is a side sectional view showing a conventional relay. 10 …… first composite member, 12 …… core part, 14 …… yoke part,
16 …… First terminal part, 24 …… Electromagnetic coil, 26 ……
Second composite member 28 ... Coil bobbin portion, 30 ... Base portion, 36 ... Second terminal.

Claims (1)

[Scope of utility model registration request] 1. A first composite member integrally formed with a yoke and at least a first terminal connected to a core of an electromagnetic coil and a circuit; a second terminal connected to the circuit; And a second composite member in which a coil bobbin of the electromagnetic coil and a base portion are integrally molded with resin, and at least the first composite member and the second terminal are inserted into the second composite member. A relay characterized by being molded.