JPS5810990Y2 - micro switch - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a pin lever type microswitch, and an object of the present invention is to provide a microswitch having a simple structure and a switch drive portion with sufficient strength.

Next, embodiments of the present invention will be described with reference to FIGS. 1 to 5.

In FIGS. 1 to 3, IA and IB are a pair of molded bodies forming a housing.

Magnet storage section 2 provided in one mold body 1A
A magnet 4 with a yoke 3 attached to the bottom surface is housed inside.

A shunt plate 6 is placed on the upper surface of the upper plate 5 of the magnet storage section 2, and one end of a leaf spring 7 is fixed to the shunt plate 6.

Further, the molded body 1A is provided with a switch driving section 8 for swinging the shunt plate 6 via a leaf spring 7.

This switch drive unit 8 is a feature of the present invention, and includes a rocker arm 9, a pin fixing member 10, and a pin lever 1.
1 and more.

Details of these are shown in FIG.

The rocker arm 9 is integrally provided with a semi-cylindrical locking part 13 concentric with the shaft 12 at the center of the shaft 12 and an arm 14 projecting in the radial direction of the shaft 12, and protruding from the molded body 1A of the shaft 12. A hole 15 for penetrating the pin lever 11 is provided in the part where the
It is formed by providing a rectangular protrusion 15 having a shape.

A protrusion 16 is provided at the tip of the arm 14.

This rocker arm 9 has a shaft 12 on the side of the protruding portion 15, and a locking portion 13 is inserted into a hole provided in the molded body 1A.
The arm 14 is inserted until it locks on the inner wall of the mold body 1A, and the protrusion 16 of the arm 14 is inserted into the hole provided in the leaf spring 7 to be stored inside the mold body 1A. stand out.

The pin fixing member 10 has a square hole 1 for fitting the protrusion 15.
7, grooves 18, 19, 20 for inserting the pin lever 11, and a groove 21 for locking the pin lever 11.

This pin fixing member 10 has a hole 17 in the pin fixing member 10.
into the protrusion 15 of the rocker arm 9, and the pin lever 11 into the groove 18. Groove 19. By passing through the hole 15a and the groove 20, it is securely fixed to the rocker arm 9.

This insertion of the pin lever 11 can be easily carried out by utilizing the elasticity of the pin lever 11, and the bent portion 11a of the head of the pin lever 11 that has been inserted is fitted into the groove 21 and locked.

In this way, the structure is simplified because no special parts are required to fix the pin lever 11.

A reed switch (switch element) 24 is fixed to the other molded body 1B to which terminals 22 and 23 that protrude outside the molded body are connected.

The microswitch 40 has a notch 25 in the molded body 1A.
, 26 and the protrusions 27 and 28 of the molded body 1B are applied with adhesive and fitted.

Further, when assembling this microswitch 40 into a device, bolts are passed through the holes 29.30 of the protruding portions 27.28 and both molded bodies IA and IB are tightened and fixed together.

Note that when both molded bodies IA and 1B are fitted together, the end of the shaft 12 of the rocker arm 9 on the opposite side to the protrusion 15 is supported by a recess 31 provided in the molded body 1B.

Next, the operation of this microswitch 40 will be explained.

When the switch drive unit 8 is not operated, the plate 6 to the shaft 1 is attracted to the magnet 4 as shown in FIG. 2, and the pin lever 11 of the switch drive unit 8 is engaged with the protrusion 32 provided on the molded body 1A. It has stopped.

In this case, the magnetic flux of the magnet 4 passes through the shunt plate 6 as shown in FIG. 5a, and the reed switch 24 does not operate.

From this state, when the tip of the pin lever 11 is pressed and swung until it locks with the protrusion 32' provided on the mold body 1A, the shaft 12 rotates clockwise in FIG.
presses the leaf spring 7.

Therefore, the shunt plate 6 swings in the direction away from the magnet 4 as shown in FIG. 24 is activated.

In this case, as described above, the pin fixing member 10 fits into the protrusion 15 of the rocker arm 9 and is fixed by the pin lever 11, and the switch drive unit 8 has sufficient strength, so it can be used for a long time. It will not be damaged.

When the pressing of the pin lever 11 is stopped, the shunt plate 6 returns to its original position due to the attraction force of the magnet 4, and the contact part of the reed switch 24 is opened, and the switch drive part 8 is biased by the leaf spring 7. Return to original position.

As mentioned above, the microswitch according to the present invention is
Since no special parts are required to fix the pin lever, the structure is simplified, and it also has sufficient strength, which provides various excellent effects.

[Brief explanation of the drawing]

The drawings show an embodiment of the microswitch according to the present invention; FIG. 1 is a front view, FIGS. 2 and 3 are perspective views showing the inside of each molded body, and FIG. 4 is an exploded view of the switch drive unit. The perspective view and FIG. 5 are explanatory views of the operation of the reed switch. In the figure, IA and IB are mold bodies, 4 is a magnet,
6 is a shunt plate, 7 is a leaf spring, 8 is a switch drive unit,
9 is a rocker arm, 10 is a pin fixing member, 11 is a pin lever, 11a is a bent part, 12 is a shaft, 13 is a locking part,
14 is an arm, 15 is a protrusion, 15a, 17 is a hole,
16 is a protrusion, 18°, 19, 20, and 21 are grooves, and 24 is a reed switch (switch element).

Claims (1)

[Scope of utility model registration request] A switch element, a magnet, a shunt plate, and a switch drive part are housed in a molded body, and by operating the switch drive part, the shunt plate attracted to the magnet is swung in a direction away from the magnet, and the switch is activated. In the microswitch for actuating an element, the switch driving section is rotatably supported by the mold body, integrally includes the shunt plate swinging arm, and has a pin lever penetration hole in a portion protruding from the mold body. a rocker arm having a protruding part; a pin fixing member that fits into the protruding part and has a pin lever insertion groove and a pin lever head locking groove; and a pin fixing member that is inserted through the groove of the pin fixing member and the hole of the protruding part. A microswitch, characterized in that the bent portion of the head is configured with a pin lever that is locked in a groove of the pin fixing member.