JPS5816105Y2 - Keidenki - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a relay in which a bobbin is fixed to an iron core without play.

When fixing a coil-wound bobbin to an iron core, adhesives and locking springs were conventionally used to prevent looseness between the iron core and bobbin, but this required many man-hours to use adhesives and required a large number of parts. Each had their own drawbacks, such as an increase in

The purpose of the present invention is to eliminate such drawbacks and provide a relay that can fix the bobbin to the iron core without any looseness with a simple configuration.To achieve this purpose, a fixed contact block is used. It is made of elastic synthetic resin and has a protrusion integrally formed on the fixed contact block,
The protrusion is crimped onto the end face of the bobbin flange to secure the fixed contact block to the iron core.

Embodiments of the present invention will be described below with reference to the drawings.

Figure 1 shows a lift and off-type relay. 1 is an E-shaped core, 2 is an armature, 3 is a coil, 4 is a bobbin that is inserted into the E-shaped core 1, and 5 is a coil terminal. be.

The coil 3 is wound around a bobbin 4, and the bobbin 4 is inserted into the iron core 1.

When current is applied to the coil 3 from the coil terminal 5, the armature 2 is attracted to the iron core 1 and raises the card 6, and the movable springs 7 and 8 are also raised by the card 6 and come into contact with the fixed contact 9 of the fixed contact spring 25. Switching is performed by opening the movable contact 10, which was previously in use, and by bringing the movable contact 11 into contact with the fixed contact 9, and by cutting off the current in the coil 3,
The armature 2 supported by the hinge spring 12 is the recovery spring 1
3 returns to the illustrated position, the card 6 also descends, the movable contact 10 comes into contact with the fixed contact 9, and the movable contact 11 is opened.

14 is a fixed contact block to which a fixed contact spring 25 is attached;
15 is a fixed terminal which is the other end of a fixed contact spring 25 equipped with a fixed contact 9 at one end; 16 and 17 are movable spring molds;
18 and 19 are movable spring terminals, 20 is a terminal plate, and 21 is a band.

As shown in FIGS. 2 to 4, the fixed contact block 14 is integrally formed with approximately triangular elastic protrusions 14', 14', and a bobbin 4 fitted with the central leg of the iron core 1. Place the tips of the protrusions 14' and 14' on the flange ends 4' of the iron core 1 and press the fixed contact pads 4 in the direction of the arrow in Fig. 3.
The bolts 24.2 are aligned with the end screw holes 22.22 on both legs of the bolt 24.2 and the holes 23.23 of the fixed contact block 14.
4 to fix the fixed contact block 14 to the iron core 1, the protrusions 14', 14' are elastically deformed and press the bobbin 4 firmly against the iron core 1, so that the bobbin 4 can be fixed to the iron core 1 without play. Can be done.

As explained above, according to the present invention, the bobbin can be fixed without looseness by the protrusion formed integrally on the fixed contact block, which prevents the coil lead wire from breaking and also saves man-hours compared to using adhesive. The number of parts can be reduced compared to the case where a stop spring is used.

Furthermore, in this relay, the fixed contact block is fixed to the iron core to which the movable spring mold is fixed, so the contact position relationship between the movable contact spring and the fixed contact spring can be set with high precision, and assembly is easy and highly reliable. This has the remarkable effect of making it possible to obtain a relay at a low cost.

[Brief explanation of the drawing]

1 is an overall front view of the relay, FIG. 2 is an exploded perspective view of the main parts, FIG. 3 is a plan view of the fixed contact block before it is fixed, and FIG. 4 is a plan view of the same in the fixed state. In the figure, 1 is an iron core, 3 is a coil, 4 is a bobbin, 4' is an end face of a bobbin flange, 14 is a fixed contact block, 14' is a protrusion, and 24 is a bolt.

Claims (1)

[Scope of utility model registration request] An E-shaped iron core 1, a bobbin 4 wound with a coil 3 to be inserted into the center leg of the iron core 1, and movable spring molds 16, 17 with movable contact springs 7, 8 fixed to the rear end of the iron core.
, a fixed contact block 14 made of synthetic resin having a fixed contact spring 25, an armature 2 for vertically moving the drive card 6 of the movable contact springs 1 and 8, and the coil 3
When the iron core 1 is excited, the armature 2 moves and the movable contact spring 7.8
In this relay, a plurality of substantially triangular elastic projections 14' are integrally formed on the fixed contact block 14, and the fixed contact block 14 is attached to both legs of the iron core 1. A relay in which the tip of the protrusion 14' presses the bobbin 4 toward the rear of the core, and the fixed contact spring 25 is fastened and fixed to the movable contact spring so that the contacts face each other.