JPH02838Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a structure for fixing a fixed contact spring of a relay in which the fixed contact spring is held by a winding frame.
FIG. 1 is a front view showing the main parts of a conventional fixed contact spring fixing structure of this type of relay.

1 is a fixed contact spring, 2 is a fixed contact, 3 is a winding wire,
4 is a lower collar of the winding frame, 5 is an upper collar of the winding frame, and 6 is a fixed contact terminal. That is, grooves are provided in the upper collar 5 and lower collar 4 of the winding frame, and the fixed contact spring 1 is press-fitted therein. For this reason, when the fixed contact interval is determined, an extra height is required for the A1 and A2 portions of the upper flange 5 of the winding frame, resulting in a disadvantage that the relay becomes larger. The present invention aims to eliminate these drawbacks and provide a fixed contact spring fixing structure that can reduce the height of the winding frame and maintain the distance between the fixed contacts with high precision. The drawings will be explained in detail below.

FIG. 2 is a perspective view showing an embodiment of the present invention, and FIG. 3 is an exploded perspective view of the main parts thereof.

7 and 8 are fixed contact springs, 9 is the upper collar of the winding frame, 1
0 is the lower collar of the reel.

The upper collar 9 of the winding frame has two base parts 11 and 12, each of which has grooves 13 and 14 for locking the contact spring.

The fixed contact spring 7 is divided into two parts at the upper part, one spring part 7a is bent at an angle θ1 that is slightly more acute than a right angle, the vertical part is provided with protrusions 7c and 7d for locking, and the lower part is bent at an angle θ1 that is slightly more acute than a right angle. It is connected to terminal 7b.

The fixed contact spring 8 is also divided into two parts at the upper part, one spring part 8a is bent at an angle θ2 that is slightly obtuse than a right angle, the vertical part is provided with locking protrusions 8c and 8d, and the lower part is bent at an angle θ2 that is slightly obtuse. It is connected to terminal 8b.

When the fixed contact spring 7 is press-fitted into the grooves 13 and 15, it is engaged with the protrusions 13a and 15a in the grooves and is prevented from coming out of the grooves, and the protrusions 7c and 7d are provided in the grooves 13 and 15, respectively. The fixed contact spring 7 is fixed to the winding frame upper collar 9 and the winding frame lower collar 10 by being locked above and below the stepped portions (not visible in the figure) to restrict vertical movement. In this state, the spring part 7a becomes horizontal, and the tip part presses against the upper surface of the base part 12 with a tension to accurately determine the position of the fixed contact. The top surface of the stand 11 is slightly lower than the top surface of the stand 12, and a gap G1 is provided between it and the spring part 7a. It's an escape to avoid being bothered.

In addition, the spring portion 8a is also horizontal and its tip end is at the base portion 11.
The position of the fixed contact is determined accurately by pressing it against the lower surface of the contact with a certain tension. The lower surface of the pedestal 12 is slightly higher than the lower surface of the pedestal 11, and a gap G2 is provided between the lower surface of the pedestal 12 and the contact spring 8a. This is an escape to avoid being bothered by the base section 12.

18 is an armature, 17 is a movable contact spring, and 19 is a winding terminal.

As explained above, according to the present invention, the distance between the fixed contacts can be maintained with high precision, the height of the winding frame can be made lower than before, the structure is simple, and the fixed contact spring is suitable for small relays. A fixed structure is obtained.

[Brief explanation of the drawing]

FIG. 1 is a front view of a main part of a conventional relay of this type, FIG. 2 is a perspective view showing an embodiment of the present invention, and FIG. 3 is an exploded perspective view of the main part. 1, 7, 8... Fixed contact spring, 5, 9... Winding frame upper rib, 4, 10... Winding frame lower rib, 11, 12...
...Base part, 13, 14, 15, 16...Groove, 7a,
8a...Spring part, 7b, 8b, 19...Terminal, 7
e, 7d, 8c, 8d... Convex portion, 13a, 14
a, 15a, 16a...Protrusion, G1, G2...Gap, θ1, θ2...Corner, 7e, 8e...Contact.

Claims (1)

[Scope of utility model registration request] A winding frame having flanges at both ends is formed with two bases each having a groove on one of the ribs, and a groove is provided on the other rib corresponding to the groove provided on the base, forming an L-shape. The vertical portions of the T-shaped fixed contact spring are engaged with the grooves provided in both of the ribs, and the L-shaped fixed contact is formed on the upper surface of one of the bases. Fixation of a fixed contact spring in an electromagnetic relay, characterized in that the tip of the horizontal part of the spring is pressed into contact with the lower surface of the other base part, and the tip of the horizontal part of the fixed contact spring formed in the T-shape is pressed into contact with the lower surface of the other base part. structure.