JPS6226695Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a switch device for a discharge spark type gas lighter using a battery as a power source.

Conventionally, a printed circuit board on which two conductive parts are patterned is fixed to a frame, a conductive rubber is pasted on the surface of the printed circuit board with a slight gap, and the conductive rubber is pressed from the outside. A switch device is known that connects both conductive parts on a printed circuit board. However, with this type of switch device, it is difficult to create an appropriate gap between the conductive rubber and the printed circuit board; if this gap is too narrow, the conductive rubber will constantly come into contact with both conductive parts. If the gap is too wide, the movable stroke of the conductive rubber becomes large, causing the conductive rubber to peel off.

SUMMARY OF THE INVENTION In view of the above-mentioned drawbacks, it is an object of the present invention to provide a switch device for a gas lighter that is reliable in its operation and easy to assemble.

Embodiments of the present invention will be described below based on the drawings.

The lighter case 1 rotatably supports a fire extinguishing lid 2 at the top, and includes components for an ignition circuit (not shown).
It has a built-in chassis 3 that stores the. A rectangular mounting hole 1a is bored in the side wall of the lighter case 1, and a frame 4 made of a synthetic resin material plated with metal is fixed to the mounting hole 1a by an elastic plate 5. A plurality of engagement protrusions 4a are formed on the left and right inner circumferential walls of the frame 4, and a hook-shaped protrusion 4b is formed on the upper inner circumferential wall. A printed circuit board 6 is inserted between them. This printed circuit board 6 is made of an insulating resin material, and has two conductive parts 6 on the back side as shown in FIG.
a, 6b, and as shown in FIG.
In a, the inner conductive portion 6d is electrically connected to the conductive portion 6b via the through hole 6e. Two elastic connection plates 3a, 3b are fixed to the chassis 3, which are electrically connected to the switch terminals of the ignition circuit, and these elastic connection plates 3a, 3b are elastically attached to both conductive parts 6a, 6b of the printed circuit board 6, respectively. This causes the printed circuit board 6 to contact the frame 4.
Further, the frame bodies 4 are each securely fixed to the lighter case 1. Reference numeral 7 denotes a switch member made of a thin metal plate such as phosphor bronze. This switch member 7 is curved into a hemispherical shape, and has two bent pieces 7a at opposing positions.
has been formed. This bent piece 7a is inserted into the through hole 6e formed in the outer conductive portion 6c of the printed circuit board 6 and the hole 6f similarly bored through the outer conductive portion 6c, thereby allowing the switch to be activated. The member 7 is attached to the printed circuit board 6 at an appropriate position so as not to come into contact with the conductive frame 4. When no external force is applied to the switch member 7, the peripheral portion of the switch member 7 is in contact only with the outer conductive portion 6c, and the center portion of the switch member 7 is not in contact with the inner conductive portion 6d. Then, when a pressing force is applied to the central part of the switch member 7, the switch member 7 makes a click movement, thereby causing the switch member 7 to also come into contact with the inner conductive part 6d, and to contact the outer conductive part 6d. 6c and the inner conductive portion 6d are electrically connected via the switch member 7. Reference numeral 8 denotes a pressing plate for applying a pressing force to the switch member 7, and this pressing plate 8 is made of a flexible synthetic resin plate such as polyacetal, and has a total of three foot portions 8a on the left and right upper and lower sides. , and a protrusion 8b is formed in the center. Each of the legs 8a is engaged with the frame 4 so that it does not fall off from the frame 4, but in order to facilitate this engagement, a notch 8c is formed in the press plate 8. . Reference numeral 9 denotes a decorative plate made of a thin aluminum plate or the like, which is attached to the surface of the pressing plate 8 with double-sided adhesive tape or the like. The upper legs 8a are prevented from deforming in the horizontal direction, and the frame 4
It's designed to stay in place.

Next, the assembly process of the switch device having the above-described structure will be explained. First, the engaging protrusion 4 of the frame 4
A printed circuit board 6 is inserted between the hook-shaped protrusion 4b and the double bent piece 7a is inserted into the through hole 6e and hole 6f of this printed circuit board 6, and the switch member 7 is inserted.
is placed on the printed circuit board 6. Next, the lower foot portion 8a of the pressing plate 8 is engaged with the frame 4, and after deforming both upper foot portions 8a horizontally inward using the notch portion 8c, the upper foot portion 8a is is also engaged with the frame 4. When the decorative plate 9 is attached to the surface of the pressing plate 8, the upper legs 8a cannot be deformed inward in the horizontal direction, so the pressing plate 8 does not come off the frame 4, and each component of the switch device can be made into a unit in the frame 4. Then, attach this unit frame 4 to the mounting hole 1 of the lighter case 1.
When the elastic plate 5 inserted into the upper opening of the lighter case 1 is engaged with the recess 4c above the frame 4, the frame 4 and the components assembled therein are fixed to the lighter case 1, and the printing Board 6
Both conductive parts 6a, 6b are electrically connected to both elastic connecting plates 3a, 3b of the chassis 3.

In the switching operation, when the decorative plate 9 is pressed from the outside, the decorative plate 9 and the pressing plate 8 are deformed inwardly, and the central portion of the switching member 7 is pressed by the projection 8b of the pressing plate 8. Then, the switch member 7 makes a click movement, and the switch member 7
The center portion of the contact portion contacts an inner conductive portion 6d patterned on the printed circuit board 6. When the switch member 7 contacts the inner conductive portion 6d, the inner conductive portion 6d and the outer conductive portion 6c are electrically connected via the switch member 7.
A and 6b are electrically connected, and the ignition circuit is turned on. When the pressing force on the decorative plate 9 is removed, the decorative plate 9 and the pressing plate 8 return to their original positions due to the elastic force of the pressing plate 8, and the switch member 7 also returns to its original state due to its own elastic force. , the switch member 7 separates from the inner conductive portion 6d again, thereby turning off the switch.

As mentioned above, the gas lighter switch device according to the present invention has a frame fixed to a mounting hole drilled in a lighter case, and a printed circuit board having a pattern of an inner conductive part and an outer conductive part formed on the frame. stop,
A plurality of legs formed on the periphery of a flexible press plate are engaged with the frame, a switch member made of a thin metal plate capable of click movement is disposed between the press plate and the base plate, and the switch member is A gap is formed between the central curved part of the member and the inner conductive part, the peripheral part of the switch member is brought into contact with the outer conductive part, and a decorative plate is attached to the surface of the pressing plate. The switching operation can be performed reliably with a clicking sound, and the assembly is easy.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a partially sectional side view of the switch device and lighter case, and FIG.
The figure is a front view of the switch device with the decorative plate removed, FIG. 3 is a front view of the printed circuit board, and FIG. 4 is an exploded perspective view of the switch device. 1... Lighter case, 1a... Mounting hole, 4...
... Frame, 6... Printed circuit board, 6c... Outer conductive part, 6d... Inner conductive part, 7... Switch member,
8... Pressing plate, 8a... Foot portion, 9... Decorative plate.

Claims (1)

[Scope of utility model registration request] A frame body is fixed to the mounting hole drilled in the lighter case, and a printed circuit board on which an inner conductive part and an outer conductive part are patterned is secured to the frame body, and the printed circuit board is formed around the flexible press plate. A plurality of legs are engaged with the frame, a switch member made of a thin metal plate that can be clicked is disposed between the pressing plate and the base plate, and a central curved portion of the switch member is connected to the inner conductive portion. A gas lighter switch device comprising: a gap being formed between the switching member and the outer conductive portion, a peripheral portion of the switching member being in contact with the outer conductive portion, and a decorative plate being attached to the surface of the pressing plate.