JPH0729534Y2 - Switch with indicator - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a switch with an indicator, which is used in, for example, an automatic ticket vending machine, an automatic vending machine, or the like, and has both a switch function and a display function.

[Background technology]

A switch with a display device of this kind, which has a feature that the depth dimension can be made small, has been separately proposed by the same applicant (for example, Japanese Patent Application No. 63-207963).
Etc.).

An example of this will be described with reference to FIG. 6. The switch with indicator 12 includes a box-shaped holder 14 having an opening on the front surface (left side in the drawing), and a rectangular tube fitted and fitted to the opening surface side of the holder 14. The case-like cover 16 and the cover 16 are both made of an insulating material and form a case 18.

Inside the case 18, the front and back surfaces of the reinforcing plate 20 wound with the flexible printed circuit board 22 having a single-sided conductor are arranged along the front surface of the case 18. Then, the flexible printed circuit board 22 is bent along the wall surface in the case 18, and a part of the flexible printed circuit board 22 is passed between the holder 14 and the cover 16 to be taken out from the rear surface of the case 18 for external connection.

Then, the display 24 is attached to the front side of the printed circuit board 22 in the case 18, and the switch 26 such as a tact switch is attached to the rear side of the same printed circuit board 22 so that the actuator 261 is extended to the rear side. There is.

Further, in the front part of the case 18, there are provided two fitting pieces 281 which are rotatably and detachably fitted to the two protruding shafts 161 protruding inwardly from the left and right side surfaces of the cover 16, respectively. A translucent operation cover 28, which is rotatable in the front-rear direction as shown by an arrow A using the protruding shaft 161 as a support shaft, is detachably fitted. The operation cover 28 may be transparent, semi-transparent, or colored.

The front portion of the operation cover 28 and the display device 24 are tilted upward because it is preferable in that the display contents of the display device 24 can be easily viewed from diagonally above.

In the bottom of the case 18 (more specifically, in the holder 14 thereof), a lever-like movable piece 30 having elasticity, which is bent in an inverted V shape when viewed from the side, is housed. And holder
The support portion 141 provided on the bottom surface of 14 is used as a fulcrum of the movable piece 30, and the end portion on the long side thereof is used as a force point, and the protrusion portion 282 provided on the operation cover 28 serves as a point of arrow A of the operation cover 28. In response to such a pressing operation, the switch 26 is pushed or released as indicated by the arrow B, and accordingly, the actuator 261 of the switch 26 is indicated by the arrow C by setting the end of the movable piece 30 on the short piece side as the action point. Switch 26 to reverse the pressure of the operation cover 28.
Constitutes an operating mechanism for operating the.

When the operation mechanism of the switch 26 is configured in this way, the structure is simplified, the number of parts is small, and it contributes to the reduction of the depth dimension L ₁ described later.

The reinforcing leaf spring 32 is provided on the back side of the movable piece 30 because it is preferable for increasing the restoring force of the movable piece 30 and the operation cover 28.

In the display-equipped switch 12, the flexible printed circuit board 22 and the like are arranged along the front surface of the case 18, and the display 24 and the switch 26 are attached to the front and rear surfaces of the printed circuit board 22 and the like. The length of the terminal portion has almost no effect on the depth dimension, so that the space in the front-rear direction of the case 18 is effectively used without waste, so that the depth dimension L ₁ of the display-equipped switch 12 can be reduced. it can. For example, the depth dimension of the conventional switch with a display device of this type is about 36 mm, but the depth dimension L ₁ of the switch 12 with a display device can be reduced to about 19 mm, which is about half that of the conventional switch.

[Purpose of device]

However, it can be said that the display-equipped switch 12 as described above still has room for improvement in the following points.

This will be explained with reference to FIG. 7.
For example, a plurality of LED chips 242 are arranged on the surface of the printed circuit board 241 in a segment shape so as to display numbers, each LED chip 242 and the conductor of the printed circuit board 241 are connected by a bonding wire 243, and a plurality of printed circuit boards 241 are connected. Pin terminal
Lamp house 246 with diffusion filter 247 attached on top of what was soldered through 244 (245 indicates that solder)
It has a structure that covers.

Then, each pin terminal 244 of such an indicator 24 is connected to the reinforcing plate 2
0 and the flexible printed circuit board 22 are passed through and soldered to the conductor of the same printed circuit board 22. 34 indicates the solder.

As described above, in the switch 12 with the display device, the display device 24 and the printed circuit board 22 are completely separate from each other, and both of them are provided with a plurality of pin terminals 244 (for example, 12 for a 4-digit number display). Therefore, when viewed as the switch 12 with an indicator as a whole, since a plurality of pin terminals 244 are required, the number of parts is increased and the cost is high. Since each of the connection points is formed, the number of connection points increases accordingly, and the number of man-hours for soldering and the like increases, resulting in cost, and there is still room for improvement in that it also causes a decrease in reliability.

Therefore, the main object of the present invention is to provide a switch with a display in which such a point is further improved.

[Means for achieving the purpose]

A first switch with an indicator of the present invention is a case made of an insulating material, and a translucent operation cover operably fitted in a front surface portion of the case in a pressing direction, the front surface portion being the front surface of the case. And a printed circuit board that is tilted upwards with respect to the operation cover and that is disposed inside the case so as to be substantially parallel to the front surface of the operation cover and that is partially pulled out of the case.
An indicator having a plurality of LED chips directly mounted on the front side of the printed circuit board case and a lamp house directly fixed to the front side, and a switch mounted on the rear surface side of the printed circuit board case. , And an operating mechanism for operating the switch by reversing the pressing force according to the pressing operation of the operation cover.

A second indicator-equipped switch of the present invention includes an insulating case, a translucent operation cover operably fitted in the front surface of the case in the pressing direction, and a front surface of the operation cover. A flexible printed circuit board arranged along the case and partly pulled out of the case, and an indicator having a printed circuit board on which a plurality of LED chips are mounted, wherein the flexible printed circuit board is provided on the front side in the case. The printed circuit board is directly soldered, the switch mounted on the rear surface side in the case of the flexible printed circuit board, and the pressing force is inverted according to the pressing operation of the operation cover to operate this switch. And an operating mechanism.

[Action]

In the first switch with a display device, since the plurality of LED chips forming the display device are directly mounted on the front surface side of the printed circuit board in the case, the display device and the printed circuit board as in the prior example are provided. It eliminates the need for multiple pin terminals to be connected and reduces the number of connection points accordingly. Also, a printed circuit board unique to the display is not necessary.

In addition, in the above second switch with indicator, a plurality of switches
The printed circuit board for the display with the LED chip mounted is soldered directly to the front side of the flexible printed circuit board inside the case, so there is no need for multiple pin terminals to connect the display and the printed circuit board as in the previous example. And the number of connection points is reduced accordingly.

〔Example〕

FIG. 1 is a longitudinal sectional view showing a switch with a display according to an embodiment of the present invention. The same or corresponding parts as those in the example of FIG. 6 are designated by the same reference numerals, and in the following, differences from the preceding example will be mainly described.

In the switch 40 with a display of this embodiment, a fixed printed circuit board (in this specification, a rigid printed circuit board with respect to a flexible printed circuit board) 42 is tilted in the operation cover 28 in the case 18 as described above. It is arranged so as to be substantially parallel to the front part of the case 18 and a part of it is extended (sideways) from one side surface of the case 18 to be used for external connection. The front portion of the operation cover 28 is tilted upward with respect to the front surface of the case 18, as shown in the figure.

The display 44 is provided on the front side of the case 18 of the printed circuit board 42, and two switches 26 as described above are arranged side by side on the rear side in this example (the positions of the actuators 261 are set to the third position). (Shown in the figure).

The part of the indicator 44 will be described with reference to FIG. 2. In this embodiment, a plurality of LED chips 442 constituting the indicator 44 are
It is directly mounted on the front surface side of the printed circuit board 42 in the case 18.

That is, a plurality of LED chips 442 are arranged in a segment shape so as to display numbers, for example, and are bonded with a conductive adhesive on a conductor (not shown) of a predetermined pattern provided on the front surface side of the printed circuit board 42. At the same time, each LED chip 442 and a predetermined conductor on the surface of the printed circuit board 42 are wire-bonded using a wire 443.

Further, a diffusion filter 447 is provided on the front side of the printed circuit board 42.
The lamp house 446 to which is attached is directly fixed so as to cover the LED chip 442, and the display unit 44 is configured in this manner.

When the LED chip 442 is wire-bonded to the conductor on the surface of the printed circuit board 42, in order to facilitate the bonding, at least the surface of the conductor to be bonded is plated with, for example, gold or silver. Is preferred.

According to such a switch 40 with a display, since the plurality of LED chips 442 forming the display 44 are directly mounted on the front surface side of the printed circuit board 42 in the case 18, the switch with a display of the prior example. 12 like indicator 24 and printed circuit board
A plurality of pin terminals 244 for connecting to and 22 are not necessary, and the number of connecting points is reduced accordingly. Further, the printed circuit board 241 unique to the display device is also unnecessary.

As a result, when viewed as the display-equipped switch 40 as a whole, compared with the display-equipped switch 12 of the preceding example, the number of parts and the work man-hours such as soldering are reduced, so that the cost can be reduced and the number of connection points is reduced. Therefore, reliability is also improved.

Also, unlike the previous example, the display 44 and the printed circuit board 42
Since there is no extra gap between and, the depth dimension L ₂ of the display-equipped switch 40 can be reduced accordingly. For example, with the indicator-equipped switch 12 of the preceding example, the depth dimension
Although L ₁ was about 19 mm as described above, the depth dimension L ₂ could be set to about 16 mm in this switch 40 with an indicator.

Note that FIG. 3 shows the inside of the bottom of the case 18 of the switch 40 with an indicator, and on the reinforcing leaf spring 32, in this example, a planar U-shape for collectively operating the two switches 26. The movable piece 30 that has been installed is fitted. The holder 14 is provided with an engaging portion 142 for preventing the floating of the movable piece 30 and an engaging portion 143 for preventing the movable piece 30 from popping out.

Further, in FIG. 1, the rear corner of the side surface of the case 18 opposite to the side where the printed circuit board 42 is taken out is removed (cut) (181 indicates the cut surface). For example, when the switch 40 with the display is attached to the operation panel 48, after inserting the portion of the printed circuit board 42 that has come out of the case 18 into the opening 481 of the operation panel 48, close the point P at the outlet of the printed circuit board 42. By pressing the switch 40 with the display unit around the center (rotating left in FIG. 1) into the operation panel 48, the printed board 42 does not get in the way and the rear corner of the case 18 hits the operation panel 48. This is because the switch with indicator 40 can be fitted into the opening 481 of the operation panel 48 without the need.

Further, if the fixed printed circuit board 42 is used as the printed circuit board as in the above embodiment, the cost can be reduced as compared with the case where the flexible printed circuit board is used, but of course, if necessary, similar to the case of the preceding example. Alternatively, the flexible printed board may be used in combination with a reinforcing plate.

By doing so, the flexible printed circuit board can be made long and can also serve as the wiring with other devices, so that a cable for relay can be omitted and the flexible printed circuit board can be stored in the case 18. Since it can be bent out of the case 18 and a part thereof can be pushed out from the rear surface of the case 18, the rear corner of the case 18 does not necessarily have to be cut as in the embodiment of FIG. It becomes possible (see the embodiment of FIG. 4).

Even when using the flexible printed circuit board as described above, when wire-bonding the LED chip 442 forming the indicator 44 thereto, in order to facilitate the bonding, at least on the conductor surface of the portion to be wire-bonded, for example, It is preferable to plate gold or silver.

Alternatively, when a flexible printed board is used, the embodiment shown in FIG. 4 may be used.

That is, in the switch with display device 50, the flexible printed circuit board 22 is used instead of the fixed printed circuit board 42, but the reinforcing plate 20 is provided only in the switch 26 portion.

In addition, the LED chip 442 as described above is fixed to the printed circuit board.
The display unit 44 is configured by mounting it on the lamp 46 and mounting the lamp house 446, etc., and this printed circuit board 46 is arranged on the front side of the flexible printed circuit board 22 and directly between them (that is, the pin terminal 244 as in the prior example). Without going through)
Soldering.

A detailed example of the soldered portion will be described with reference to FIG. 5 which is an enlarged sectional view of the R portion in FIG.

The printed board 46 has conductors 462 and 463 of a predetermined pattern on both front and back surfaces of the board 461, both of which are through holes.
They are connected to each other via conductors 465 in 464.

Then, as described above, the plurality of LED chips 442 are attached to the conductor 462 on the front surface side of the printed board 46 by a conductive adhesive or the like, and are wire-bonded using the wires 443.

In this example, the flexible printed board 22 is one in which a conductor 222 having a predetermined pattern is provided on the surface of a base film 221, and a cover film 223 is covered, through holes 224 are formed at required connection points, and conductors are provided around the through holes 224. 222 is exposed, and this and the conductor 463 on the back surface side of the printed board 46 are directly soldered by the solder 34.

In the switch with display device 50, the fixed printed circuit board 46 forming the display device 44 also functions as a reinforcing plate for the flexible printed circuit board 22.

Moreover, even when the flexible printed circuit board 22 is used, it is not necessary to wire-bond the LED chip 442 directly to it, so there is no need to plate the flexible printed circuit board 22 with gold, silver, etc., that is, the front side of the printed circuit board 46. Since it suffices that the conductor 462 be plated with gold, silver or the like, the flexible printed circuit board 22 having a normal soldering specification can be used.

Also in this embodiment, since the printed circuit board 46 and the flexible printed circuit board 22 constituting the display device 44 are directly soldered, the display device 24 and the printed circuit board 22 such as the switch 12 with a display device of the prior example. The plurality of pin terminals 244 connecting with and becomes unnecessary. Further, even if the printed circuit board 46 and the flexible printed circuit board 22 are soldered, the number of soldering points is half that in the case of using the pin terminals 244 (that is, one side), so that the number of connection points is also reduced.

As a result, when viewed as the display-equipped switch 50 as a whole, compared to the display-equipped switch 12 of the preceding example, the number of parts and the work man-hours such as soldering are reduced, so that the cost can be reduced and the connection point can be reduced. Reliability is also improved because it decreases.

Further, since there is no extra gap between the display unit 44 and the flexible printed circuit board 22, as in the case of the previous embodiment,
The depth dimension L ₃ of the display switch 50 can be reduced (for example, to about 16 mm).

It should be noted that the operation cover 28 may be linearly movable (sliding) in the front-rear direction, instead of being rotatable in the front-rear direction in the front surface portion of the case 18 as in the above-described examples.

In addition, the front surface of the operation cover 18 is tilted upward as in each of the above-mentioned examples, and the printed circuit board 4 in the case 18 is adjusted accordingly.
It is preferable to incline 2, 22, etc. as in the above examples, in terms of the operability of the operation cover 28 from an obliquely upper position and the readability of the display content of the display 44, but it is not essential and they are inclined. Instead, it may be arranged along the front surface of the case 18.

[Effect of device]

As described above, according to the present invention, the following effects can be obtained in addition to the effects of the switch with a display device of the prior art.

That is, according to the first indicator-equipped switch according to the present invention, since the plurality of LED chips forming the indicator are directly mounted on the front surface side of the printed circuit board in the case, the display as in the prior example is displayed. A plurality of pin terminals for connecting the container and the printed circuit board are not necessary, and the number of connecting points is reduced accordingly. Also, a printed circuit board unique to the display is not necessary.

As a result, when viewed as a switch with an indicator as a whole, compared to the previous example, the number of parts and the number of man-hours for soldering are reduced, so that cost can be reduced, and the number of connection points is reduced, so reliability is also improved. To do. Further, since there is no extra gap between the display and the printed circuit board, the depth dimension of the display-equipped switch can be reduced accordingly.

Moreover, since the front surface of the operation cover is tilted upward with respect to the front surface of the case, and the printed circuit board in the case is almost parallel to the front surface of the operation cover, the LED chip and the lamp are attached to the front side of the printed circuit board. Attaching the house directly results in the LED chip and lamp house also tilting upward. In this way, both the front part of the operation cover and the display device at the back of the operation cover are tilted upward, so that the display contents of the internal display device can be easily viewed from diagonally above. Moreover, even in that case, no special means and work for tilting the internal display unit itself upward are required, and accordingly, the assembly of the switch with the display unit becomes easy. Further, unlike the case where the display device is mounted on the printed circuit board by inclining upward, there is no extra gap between the display device and the printed circuit board, so the depth dimension of the switch with the display device can be reduced accordingly.

Also, in the second switch with a display according to the present invention, the printed circuit board for a display mounted with a plurality of LED chips is directly soldered to the front side of the flexible printed circuit board in the case. A plurality of pin terminals for connecting the display and the printed circuit board as described above are not necessary, and the number of connection points is reduced accordingly.

As a result, when viewed as a switch with an indicator as a whole, the number of parts and the work man-hours such as soldering are reduced as compared with those of the above-described first switch, but the cost is reduced. In addition to being possible, the number of connecting points is reduced, so that reliability is also improved. Further, since there is no extra gap between the display unit and the printed circuit board, the depth dimension of the switch with display unit can be reduced accordingly, as in the case of the first switch with display unit. .

Further, in this second switch with an indicator, it is not necessary to wire-bond the LED chip directly to the flexible printed circuit board, so it is not necessary to plate the flexible printed circuit board with gold, silver or the like to facilitate wire bonding. Therefore, it is possible to use a flexible printed circuit board having a normal soldering specification.

[Brief description of drawings]

FIG. 1 is a longitudinal sectional view showing a switch with a display according to an embodiment of the present invention. FIG. 2 is an enlarged cross-sectional view of the display portion of FIG. FIG. 3 is a view showing the inside of the bottom portion of the case shown in FIG. FIG. 4 is a longitudinal sectional view showing a switch with a display according to another embodiment of the present invention. FIG. 5 is an enlarged sectional view of the R portion in FIG. FIG. 6 is a vertical sectional view showing a switch with a display, which is the background of the present invention. FIG. 7 is an enlarged sectional view of the indicator portion of FIG. 18 …… Case, 22 …… Flexible printed circuit board, 26…
… Switch, 28 …… Operation cover, 30 …… Movable piece, 34 ……
Solder, 40,50 ... Switch with indicator according to the embodiment, 42,46
...... Fixed printed circuit board, 44 …… Display unit, 442 …… LED chip.

Claims (2)

[Scope of utility model registration request] 1. A case made of an insulating material, and a translucent operation cover which is movably fitted in a front surface portion of the case in a pressing direction, and the front surface portion is inclined upward with respect to the front surface of the case. A printed circuit board which is arranged in the case so as to be substantially parallel to the front surface of the operation cover and a part of which is pulled out of the case; and a plurality of printed circuit boards which are directly mounted on the front surface side of the printed circuit board in the case. LED chip and an indicator having a lamp house directly fixed to the front side, a switch mounted on the rear side in the case of the same printed circuit board, and the pressing force is inverted according to the pressing operation of the operation cover. A switch with an indicator provided with an operating mechanism for operating the switch. 2. A case made of an insulating material, a translucent operation cover which is movably fitted in the front surface of the case in the pressing direction, and arranged inside the case along the front surface of the operation cover. And a display having a flexible printed circuit board partially pulled out of the case, and a printed circuit board on which a plurality of LED chips are mounted, the printed circuit board being directly soldered to the front side in the case of the flexible printed circuit board. And a switch mounted on the rear surface side in the case of the flexible printed circuit board, and an operation mechanism for inverting the pressing force according to the pressing operation of the operation cover to operate the switch. Switch with indicator.