JPH04512Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field The present invention relates to a switch device used in small electrical equipment such as a portable electric light.

(b) Prior art This type of switch device, for example,
Publication No. 31707 is known. However, in the above structure, the movable contact piece is pressed by the operating piece to bring it into point contact with the fixed contact.
There was a risk that poor contact would occur at the contact portion between the movable contact and the fixed contact due to corrosion due to aging.

(c) Problems to be Solved by the Invention In view of the above-mentioned problems, the technical problem of the present invention is to provide a switch device that is free from the risk of contact failure.

(d) Means for solving the problem In order to solve the above problem, the present invention has a fixed contact fixed to the horizontal part of a substantially L-shaped switch board and a fixed frame fixed to the vertical part of the switch board. is,
Almost inverted L with the free end located on the horizontal part of the switch board
A letter-shaped movable contact piece, the movable contact piece is elastically deformed about the fixed frame of the switch board as a fulcrum, and the free end of the movable contact piece is slid along the horizontal part of the switch board to the fixed contact. It is characterized by comprising an operation piece for dynamic pressure contact.

(E) Function Since the present invention has the above-described structure, the movable contact is elastically deformed using the fixed frame of the switch board as a fulcrum by the operation of the operating piece, and the free end of the movable contact piece is brought into sliding pressure contact with the fixed contact. In addition, since the fixed contacts and movable contacts are mounted together on the switch board, these contacts and contact pieces can be attached to the switch board in advance, and then the switch board can be attached to the main body, making assembly easy. It is.
Furthermore, since the contacts and the contact piece members are attached to the same member, it is easy to set the attachment positions of the contacts and the contact piece members.

(f) Example An example in which the present invention is applied to a portable electric lamp will be described in detail below based on the drawings.

Reference numeral 1 denotes a portable light main body, which is composed of a bottomed cylindrical main body case 2 having a storage battery and a charging plug (both not shown), and a cover 3 that covers the front opening of the main body case 2.

A lens 4 made of translucent synthetic resin and a reflective plate 5 made of synthetic resin whose surface is plated with nickel chrome are crimped and fixed to the front surface of the cover 3, and a light bulb 6 is attached to the reflective plate 5. has been done. Reference numeral 7 denotes a switch board removably fixed within the cover 3, which has a substantially inverted L shape with a horizontal portion approximately parallel to the side wall of the cover 3 at the top and a vertical portion hanging from one end of the horizontal portion. A fixed frame 8 is provided at the vertical portion. Reference numeral 9 denotes a power supply contact piece whose one end is caulked and fixed vertically below the switch board 7, and the other end is brought into contact with the reflector plate 5. This power supply contact piece 9 is connected to a storage battery by a lead wire (not shown). has been done. 1
0 is a groove 11 formed in the horizontal part of the switch board 7.
It is a fixed contact fixed to the battery, and is connected to the storage battery by a lead wire (not shown). The groove 11 is formed to a depth such that the upper surface of the fixed contact 10 is flush with the horizontal portion of the switch board 7. Reference numeral 12 denotes an elastic movable contact piece having an approximately inverted L-shape whose intermediate portion is caulked and fixed to the fixed frame 8 of the switch board 7;
One end is bent into a U-shape and brought into contact with a contact point of the light bulb 6, and the other end is made into a free end and brought into contact with a horizontal portion of the switch board 7.

Reference numeral 13 denotes an operation piece that is slidably supported by the opening 14 on the top surface of the cover 3, and has grooves 15 on both sides, and this groove 15 is fitted into a flange 16 on the periphery of the opening 14 to prevent it from coming out. Ru. 17 is the operation piece 13
The operating section is integrally installed vertically on the back surface of the operating panel 13.
By sliding the movable contact piece 12, the movable contact piece 12 is elastically deformed using the upper end of the fixed frame 8 of the switch board 7 as a fulcrum. The free end of the movable contact piece 12 slides on the horizontal portion of the switch board 7 and comes into contact with the surface of the fixed contact 10 in a sliding pressure contact state. Reference numeral 18 denotes an engagement piece formed on the side surface of the operation piece 13, and has an engagement protrusion 19 at its tip. The operation piece 13
is held in the sliding position against the return force of the movable contact piece 12 by engaging the engagement protrusion 19 with a protrusion 20 formed integrally with the horizontal portion of the switch base plate 7 during the sliding operation.

Therefore, in the off state shown in FIG. 1, the movable contact piece 1
2 is not pressed by the operation piece 13 and is not in contact with the fixed contact 10. Therefore, no power is supplied to the light bulb 6, and the light bulb 6 is turned off.

When the operation piece 13 is slid, the operation part 17 elastically deforms the movable contact piece 12 using the upper end of the fixed frame 8 of the switch board 7 as a fulcrum. And the movable contact piece 12
The free end is the horizontal part of the switch board 7 and the fixed contact 10
sliding on the surface. At this time, the contact part with the fixed contact 10 is polished by sliding of the movable contact piece 12, and even if corrosion etc. occurs, the contact part can always be kept clean. Since the contact pressure to the contact point 10 is increased, power can be reliably supplied to the light bulb 6 without causing contact failure. Then, the engagement protrusion 19 of the engagement piece 18 engages with the protrusion 20 on the horizontal portion of the switch board 7, and is locked against the return force of the movable contact piece 12, thereby maintaining the lighting state.

(g) Effects of the invention Since the invention is constructed as described above, the contact part with the fixed contact can be polished by sliding the movable contact piece.
In addition, the contact pressure of the movable contact piece to the fixed contact can be increased as the movable contact piece slides, and the movable contact piece and the fixed contact can be reliably brought into contact without causing contact failure. In addition, since the fixed contacts and movable contacts are mounted together on the switch board, these contacts and
Assembly is easy because the switch board can be attached to the main body after the contact piece member is attached to the switch board. Furthermore, since the contacts and the contact piece members are attached to the same member, it is easy to set the attachment positions of the contacts and the contact piece members.

[Brief explanation of drawings]

The drawings all show an embodiment in which the present invention is applied to a portable electric lamp, with FIG. 1 being a partial sectional view, FIG. 2 being an exploded perspective view, and FIG. 3 being an external perspective view of the main body. 7... Switch board, 8... Fixed frame, 10...
Fixed contact, 12...movable contact piece, 13... operating piece.

Claims (1)

[Scope of utility model registration request] A fixed contact fixed to a horizontal portion of a substantially inverted L-shaped switch board, and a substantially inverted L-shaped fixed contact fixed to a fixed frame of a vertical part of the switch board, with a free end positioned above the horizontal part of the switch board. a movable contact piece; the movable contact piece is elastically deformed using a fixed frame of the switch board as a fulcrum, and a free end of the movable contact piece is slid along a horizontal portion of the switch board to slide onto the fixed contact; A switch device characterized by comprising an operation piece that is brought into pressure contact.