JPS6314346Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a push button type switch device.

Conventionally, there has been a push button type switch device in which a fixing plate and a printed circuit board are attached to two sides of a switch case, and the switch is attached to the mounting plate via the fixing plate. In this device, the mounting board and the printed circuit board are usually attached using mounting screws.

However, the conventional configuration described above requires many screws for installation, and the pressing force of the push button is directly transmitted to the printed circuit board, which easily damages the connection part with the printed circuit board, and the lead wires connected to the printed circuit board are easily damaged. This has had problems such as getting in the way when attaching other parts.

In view of the above problems, it is an object of the present invention to provide a switch device that can be firmly attached with a small number of screws and in which the lead wire does not interfere with the attachment of other parts.

In order to achieve the above object, the present invention has first and second side surfaces that are orthogonal to each other, with a mounting leg and a connecting terminal protruding from the first side, and an operation shaft having a push button attached to the tip thereof protruding from the second side. a switch, a printed circuit board disposed opposite a first side surface of the switch, a fixing plate disposed opposite a second side surface, and a mounting piece disposed on the upper surface of the fixing plate. A mounting board for a chassis or the like having In addition, a through hole is formed in the fixing plate through which the operating shaft and the locking piece pass through and the locking piece is locked, and a lead wire holder connected to the switch and the fixing plate are attached to the mounting board. The printed circuit board is provided with mounting holes for the mounting legs and through holes for the connection terminals, and the printed circuit board is inserted into the first side with the fixing plate engaged with the second side surface of the switch. The fixing plate is attached to the side surface, the connecting terminals are soldered, the lead wires are held in the holding part, and the fixing plate is attached to the mounting board with one screw.

With the above-mentioned configuration, the present invention allows the switch case to be firmly attached to the mounting board via the fixing plate, so even if a large operating force is applied to the push button, the force is transmitted to the fixing plate and dispersed, allowing it to be directly attached to the mounting base. No excessive force is applied to the switch or terminals, the switch is not tilted, and the connection part with the printed circuit board is not damaged.
Furthermore, since the lead wires are held by the holding portion, the lead wires do not get in the way of attaching other parts. Furthermore, the fixing plate is also attached to the mounting board with a single screw, making the mounting work easier.

An embodiment of the present invention will be described below with reference to the drawings. In the figure, 1 is a switch, 2 is a nearly rectangular parallelepiped switch case, 2a is a mounting leg protruding from the side surface (first side surface) of case 2, and 2b is a top surface (second side surface) of case 2. ), 2c is a T-shaped locking piece also formed on the top surface of case 2, and 3 is a locking piece of case 2.
Terminals protruding from the side surface of the case 2, 4 an operation shaft protruding from the top surface of the case 2, 5 a printed circuit board, 5a
is the mounting hole to which the mounting leg 2a of the case 2 is attached,
5b is a through hole into which the terminal 3 is inserted, 5c is a recess into which the lead wire 6 is inserted, 7 is a fixing plate attached to the top surface of the case 2, 7a is a through hole formed in the center of the fixing plate 7, and 7b is a through hole formed in the center of the fixing plate 7. V-shaped grooves are formed at two places around the through hole 7a, 7c is a protrusion protruding into the through hole 7a, 7d is a through hole formed behind the protrusion 7c, and 7e is a hole formed in the screw 8. 7f is a holding part for the lead wire 6, 9 is a mounting board for a chassis, etc., 9a is a window provided in a part thereof, 9b is a mounting piece provided inside the window 9a, 10 is a mounting board 9. The cabinet covering the top surface, 11, is a push button attached to the operating shaft 4.

In the above configuration, first, from the state shown in FIG.
By penetrating the letter-shaped locking pieces 2b and 2c and moving the fixing plate 7 in the direction of arrow A in FIG. 3, the V-shaped groove 7
b is engaged with the L-shaped locking piece 2b, and the protrusion 7c is engaged with the T-shaped locking piece 2c. At this time, the tip of the fixing plate 7 (left end in FIGS. 1 and 2) and the tip of the L-shaped locking piece 2b are substantially flush with each other.

Next, the case 2 is inserted into the mounting hole 5a of the printed circuit board 5.
The switch 1 can be attached to the printed circuit board 5 by engaging the mounting legs 2a of the switch, inserting the terminals 3 into the through holes 5b, and soldering the terminals 3 to copper foil (not shown) on the printed circuit board 5. can. At this time, as described above, the tip of the L-shaped locking piece 2b and the tip of the fixing plate 7 are flush with each other, and the surface of the printed circuit board 5 comes into contact with this surface, so the printed circuit board 5
At the same time as the work of attaching the switch 1, the fixing plate 7 can be fixed to the case 2 without wobbling in the vertical and lateral directions.

From this state, if the fixing plate 7 is attached to the mounting piece 9b of the mounting board 9 using the screws 8, the switch 1
The printed circuit board 5 and the mounting board 9 can be integrally combined.

Therefore, if these parts are housed in the cabinet 10 in this state, and the operation shaft 4 of the switch 1 is made to protrude outside the cabinet 10 and the push button 11 is attached to the tip, the result will be as shown in FIG. The switch device is completed.

In this embodiment, the upper surface of the case 2 is bent into an L shape in a direction perpendicular to the printed circuit board 5.
Although the two locking pieces 2b, 2b and the T-shaped locking piece 2c are formed, it is clear that the locking piece 2c may be bent in the same direction as the locking piece 2b.

As described above, according to the present invention, the switch case is firmly attached to the mounting board via the fixing plate using a plurality of locking pieces such as a locking piece bent into an L shape and screws. Even if a large downward operating force is applied to the push button, the force is transmitted to the fixing plate and dispersed, and no undue force is applied directly to the mounting legs or terminals, preventing the switch from tilting or preventing connection with the printed circuit board. The problem of parts being damaged can be completely eliminated. Moreover, when attaching the switch to the mounting board, you only need to screw one screw into the mounting board through the fixing plate.
Assembly work is also significantly easier. In addition, the fixing plate is equipped with a holding part for the lead wires, so the lead wires pulled out from the printed circuit board can be routed in an orderly manner, ensuring that the lead wires do not get in the way of installing other parts. It can be prevented. As a result, the switch can be installed stably with extremely simple operations.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing a switch device according to an embodiment of the present invention, FIG. 2 is a plan view of the main parts thereof, and FIG. 3 is an exploded perspective view thereof. 1... Switch, 2... Case, 2a... Mounting leg, 2b... L-shaped locking piece, 2c... T-shaped locking piece, 3... Terminal, 4... Operating shaft, 5 ...Printed circuit board, 6...Lead wire, 7...Fixing plate, 7
a, 7d...through hole, 8...screw, 9...mounting board, 10...cabinet, 11...push button.

Claims (1)

[Scope of utility model registration request] In the first side surface and the second side surface that are perpendicular to each other, the mounting leg and the connecting terminal are connected to the second side surface from the first side surface.
A switch having operating shafts each having a push button attached to the tip thereof protrudes from the side surface of the switch, a printed circuit board disposed at a position facing the first side surface of the switch, and a printed circuit board disposed at a position facing the second side surface of the switch. The switch is equipped with a fixing plate and a mounting board for a chassis or the like that is placed on the top surface of the fixing plate and has a mounting piece, and the second side of the switch has an L extending toward the first side.
A plurality of locking pieces, including a locking piece bent into a letter shape, are provided around the operating shaft, and the fixing plate has a transparent plate that passes through the operating shaft and the locking pieces and locks the locking pieces. In addition to forming holes, screw insertion holes are formed for attaching the lead wire holder connected to the switch and this fixing plate to the mounting board, and the printed circuit board has mounting holes for the mounting legs and through holes for the connection terminals. The fixed plate is engaged with the second side of the switch, the printed circuit board is attached to the first side, the connection terminals are soldered, and the lead wires are held in the holding part, and the fixed plate is attached to the second side of the switch. A switch device characterized in that it is attached to a mounting board with a single screw.