JPS5829859Y2 - sliding switch - Google Patents

Description

[Detailed description of the invention] This invention arranges fixed contacts in a protruding manner on an insulating substrate.
This invention relates to a sliding switch that opens and closes between contacts using a movable contact that slides on the upper surface of the contacts.

Conventionally, this type of sliding switch has a plurality (three) of convex fixed contacts 2 (2a, 2b) on an insulating substrate 1, as shown in FIG.
, 2C) are arranged at regular intervals, and the concave movable contacts 3 are mounted by applying downward pressure to the lower surface of the contact holder 5 via the pressure spring 4, and the contact holder 5 is placed inside the switch case 6. The operation button 5a on the upper surface of the holder 5 is inserted into the operation hole 6a of the case 6 so as to protrude from the operation hole 6a, and the switch case 6 is fixed to the upper surface of the insulating substrate 1.The operation button 5a is operated to open the movable contact 3. By sliding the upper surface of the fixed contact 2, as shown by the dashed-dotted line in FIG.
Nj, and as shown by the solid line, the switch is turned off by disconnecting adjacent fixed contacts.

In the above-mentioned sliding switch, as shown by the two-dot chain line in FIG. 2, when the end of the movable contact 3 falls into the recess between the protruding fixed contacts 2a and 2b and 2b and 2C when the switch is OFF, Since the movable contacts cannot slide, the fixed contacts 2a and 2b, 2b and 2C of the insulating substrate 1
A protruding pillow 7 is provided by punching out the insulating substrate 1 between the switches to prevent the movable contacts 3 from falling. However, in this switch, the movable contacts 3 are in contact with the fixed contacts 2b even at 011. There is a problem with insulation,
In addition, since the movable contacts only slide on the same plane when ON and 011, there is a problem with the reliability of switching.

This idea was devised in view of the above problem, and consists of protruding feet that slide on an insulating substrate on both the left and right sides of the lower surface of the movable contact to prevent the movable contact from falling into between the fixed contacts. , a recess or hole is provided in the insulating substrate into which the foot of the movable contact fits in at the switch ON position so that the lower surface of the movable contact contacts the upper surface of the fixed contact, thereby ensuring reliable switching at the switch ON position; When the movable contact leg is located on the insulating substrate in the switch OFF position, a gap is created between the movable contact and the fixed contact, and a recess or hole for fitting the contact leg is formed between the fixed contact. The present invention provides a sliding switch that also improves insulation due to its arrangement.

This invention will be explained in detail below with reference to embodiments shown in the drawings.

The components of the switch are the same as the switch shown in FIG. 1, including an insulating substrate 10. Contact 11. contact 11
A contact holder 12 made of an insulating material that fits onto the lower surface of the contact holder 12. A pressurizing spring 13 compressed between the contact holder 12 and the contacts 11 for pressurizing the contacts 11. Contact holder 1 fitted with contact 11
2 is built into the insulating substrate 10 with the operation button 12a on the top surface of the contact holder protruding from the operation hole 14a.
The switch case 14 is fixed to the top surface of the switch case 14.

The contact 11 is made of a conductive metal, and as shown in the figure, contact holder fitting surfaces 11b are provided on both short sides of the rectangular lower surface 11a, and the contact holder fitting surfaces 11b project upward.
A foot portion 11C protruding downward from one end of one long side,
Also, a foot portion 11 protruding downward at the other end of the other long side.
d protrudes.

As shown in FIG. 4, the opposing inner surfaces of both leg portions 11C911d are provided with sloped portions 11C1 having an inclination angle θ of 30 to 45°.
, 11di.

As shown in the figure, on the upper surface of the insulating substrate 10 are disk-shaped fixed contacts 15 a , 15 b , 15 C made of metal silver or the like.
are provided protrudingly at regular intervals, and I-shaped holes 16a and 16b for fitting the contact legs as shown in the figure are bored between the contacts 15a and 15b, and 15b and 15C.

The hole 16a has its vertical hole portion 16a1 connected to the fixed contact 15.
A horizontal hole portion 16a2 provided between a and 15b and on one end side.
on the front side in the figure of the fixed contact 15a, and the side hole 16 on the other end side.
a3 is located on the rear side of the fixed contact 15b, and when connecting the contacts 15a and 15b via the contact 11, one leg 11C of the contact 11 is located in the side hole 16a.
2, the other foot portion 11d is just fitted into the horizontal hole portion 16a3, and both sides of the contact lower surface 1a are set so as to come into contact with the upper surfaces of the fixed contacts 15a and 15b.

The same is true for the other hole 16b, and the vertical hole portion 16b1 is located between the contacts 15b and 15C, and one horizontal hole portion 16b2 is located between the front side of the contact 15b and the other horizontal hole portion 16b.
3 is located on the rear side of contact 15C, and
When connecting b and 15 C with contact 11, foot 11
C fits into the horizontal hole 16b2, and 11d fits into the side hole 16b3.

The holes 16a and 16b are defined by the holes 16a, 1 when the center of the contact 11 is in the neutral position on the central fixed contact 15b.
They are set at intervals so that they do not fit into 6b.

Note that instead of the holes 16a and 16b, the contact foot 1
Four parts into which the 1C211d fits may be carved on the insulating substrate 1.

The opposing inner end surfaces of the horizontal hole portions of the holes 16a, 16a are sloped portions as shown in FIG.

Incidentally, although slope portions are formed on both the inner end surface of the hole 16a and the inner surface of the foot portion 11C911d, the slope portion may be formed only on either one.

The operation of the switch having the above structure will be explained below. When the operating button 12a is set to the neutral OFF position, the foot portion 11C911d of the contact 11 is inserted into the hole 16 as shown in FIG.
A and 16b are located on the upper surface of the insulating substrate 1, and the contact lower surface 11a is each fixed contact 15a.

15b and 15C, and there is a gap S between the center fixed contact 15b and the fixed contacts 15a to 15C, so that the fixed contacts 15a to 15C are completely insulated and no circuit connection is made.

When the operation button 12a is moved to the left in the figure from this OFF position to the ON position, the contact 11 pressurized by the pressurizing spring 13 releases its foot 11C911d.
As shown in the opening of FIG.
Foot part 11 C is hole 16a (7) Lateral hole part 16 a2, 11
d is fitted into 16a3, and the lower surface 11a of the contact is pressed against the fixed contacts 15a and 15b, ensuring a reliable switching action.

When the switch is turned on, as shown in FIG. 4, the lower surface 11a of the contact and the fixed contact come into contact with each other facing each other, and the side surfaces of the feet 11C and 11d are sloped 11C1°11d1, so that the contact 11 sinks. The speed is made sufficiently faster than the lateral movement speed of the contact.

Therefore, switching speed can be increased and switch performance can be improved.

Move to the right in the figure from the above ON position to the neutral OFF position, or close the fixed contacts 15b and 15C.
When moved to the position, the contact legs 11C, 11d easily rise from the holes 16a to the inclined surfaces 11C1, 11dl, and slide on the insulating substrate 10.

The operation of moving the operating button 12a from the neutral OFF position to the right in the figure and closing the fixed contacts 15b and 15C is the operation of the fixed contact 1.
Since it is the same as the closing operation of 5a and 15b, the explanation will be omitted.

As is clear from the above explanation, according to the switch according to this invention, the contact is provided with a protruding foot, and the insulating substrate is provided with a hole or a recess into which the contact foot fits when the switch is turned on. , has the effects listed below.

■ In the switch OFF position, the contacts do not come into contact with any of the fixed contacts, improving insulation when the switch is OFF.

■ When the switch is turned on, the contacts perform opposite movements regardless of the sliding type, and at the same time, the switching speed can be increased and the switch performance can be improved.

■ Continuous holes or recesses are provided between the fixed contacts, which increases the air gap or surface distance and improves the insulation between the fixed contacts.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view showing a conventional sliding switch, Fig. 2 is an explanatory diagram of the operation of the switch shown in Fig. 1, Fig. 3 is an exploded perspective view showing an embodiment of the switch of this invention, and Fig. The figure is an enlarged view of the main part of FIG. 3, and FIG. 5A-9 is an explanatory diagram of the operation of the switch shown in FIG. 10...Insulating substrate, 11...Contact (11a...bottom surface, 11C, 11d...
...foot), 12...contact holder,
13... Pressure spring, 14... Switch case, 15a, 15b, 15C... Fixed contact, 16 a, 16 b... Hole.

Claims (2)

[Scope of utility model registration request] (1) Three fixed contacts are arranged at intervals on the top surface of an insulating substrate, and a movable contact pressurized by a spring is slidably provided on the insulating substrate, and the movable contact is moved from the neutral position where the switch is OFF. In a sliding switch that is moved in both left and right directions to bring a central fixed contact and a fixed contact on either side into contact with a movable contact to turn on the switch, the feet are protruded on both left and right sides of the lower surface of the movable contact. On the other hand, a hole or a recess is provided in the insulating substrate into which the foot of the movable contact fits in when the switch is in the ON position, and either or both of the inner surface facing the hole or recess and the inner surface facing the both feet are provided. A sliding switch characterized by forming a sloped portion. (2) Utility model registration Claims (1) The hole or recess into which the foot of the movable contact fits is provided continuously between the fixed contacts to form an air gap between the fixed contacts. A sliding switch featuring: