JP4470731B2 - Operation panel unit - Google Patents

Description

  The present invention relates to an operation panel unit used in a printer apparatus and other electrical devices.

  Conventionally, for example, a start button and a stop button are provided on the front surface or the upper surface of a printer device, and these operation buttons are usually concentrated on one place of the housing of the printer device for the convenience of the user. Yes. In order to facilitate the assembly of these operation buttons and assembly to the housing, several operation buttons are arranged close to each operation button, and the LED lamps are turned on / off according to the switching state of the operation buttons. The translucent part to be displayed is configured in a unit (operation panel unit), and this unit is assembled to the housing. The tact switch and LED lamp on the printed wiring board are located on the back of the operation panel unit assembled in the housing. If the operation button on the operation panel unit side is pressed, the tact switch on the back is switched, and the LED lamp The light emitted from the light illuminates the translucent part.

  On the other hand, although it is not a unit, a frame having a holding portion for accommodating the LED lamp is provided below the operation button, and a moving portion that is elastically deformed by pressing the operation button is formed in a part of the frame. A button holder having a structure in which a tact switch on the substrate is positioned below the moving unit, and the pressure by which the operation button is pressed is transmitted to the tact switch via the moving unit, and the tact switch is switched. (See Patent Document 1). In the button holder having this structure, the operation button itself is made of a translucent material, and the operation button itself receives light from the LED lamp and shines.

  In addition, a portion that transmits light is provided on the surface of the push button, the entire push button is placed and fixed on a rubber contact switch that can be elastically deformed, the rubber contact switch is formed in a cylindrical shape, and an LED lamp is disposed below the rubber contact switch. A push button switch device having a structure in which light from an LED lamp shines on the surface of the push button is known (see Patent Document 2).

Further, an illumination display part is formed on the surface of the knob, the knob is placed on the rubber contact switch, and the illumination display part on the knob surface is provided by a lamp provided so as to protrude upward from the upper surface of the rubber contact switch. A switch having a structure for lighting is known (see Patent Document 3).
Japanese Utility Model Publication No. 5-11240 JP 2002-190225 A Japanese Utility Model Publication No. 5-81917

  Conventionally, it is assumed that the above-described operation buttons are arranged in the vicinity of each operation button, and the translucent part that displays the switching state by the operation button by turning on / off the LED lamp is configured as an integrated unit. 6 and FIG. The schematic structure of a conventional operation panel unit will be described below with reference to FIGS. 6 is a perspective view seen from the front side, and FIG. 7 is a perspective view seen from the back side.

  The operation panel unit 50 has a vertically long operation panel 54 having a push button operator 51 on the front surface and a translucent portion 53 that is illuminated by the LED lamp 52 on the back, and the operation panel 54. A housing 55 for fixing to a main body side housing (not shown) fixed to the back side of the lens, and an acrylic resin lens plate 56 inserted between the operation panel plate 54 and the fixing housing 55. . A screw hole 55a and a protrusion 55b are formed on the side surface of the fixing housing 55, and when attaching to the main body side housing, the protrusion 55b is fitted into the hole of the main body side housing and aligned. The mounting screw is screwed into the screw hole 55a to be fixed to the main body side housing.

  On the main body side, a printed wiring board 58 having a tact switch 57 and an LED lamp 52 mounted on the surface is provided. When the operation panel unit 50 is fixed to the main body side housing, a push button operator 51 is provided. If the tact switch 57 is located at the rear surface position of the head and the push button is pressed, the tact switch 57 is indirectly pressed. In addition, the LED lamp 52 is positioned at the rear surface position of the translucent part 53, and the translucent part 53 is turned on via the lens unit 56 when the LED lamp 52 emits light. In the case of this conventional device, the heads of the five LED lamps 52 are respectively inserted into light-shielding cylindrical portions 55 c formed in the fixing housing 55, and light emitted from the LED lamps 52 is formed on the lens plate 56. The light transmitting portion 53 is turned on by being condensed by a portion (not shown). That is, the translucent portion 53 is configured by inserting pin-like protrusions protruding from the lens plate 56 into small holes opened in the operation panel plate 54.

  Further, the push button operation element 51 comes into contact with an elastic piece 55d formed on the fixing housing 55 so that when the user pushes the operation element 51, the operation element 51 can be operated with an appropriate elasticity. It has become. The elastic piece 55d is constituted by a substantially U-shaped cutout 55e formed in the fixing housing 55. Since the entire fixing housing 55 is made of a resin material having elasticity, only a part of the fixing housing 55 is cut into a substantially U shape, and the section becomes an elastic piece 55d having an appropriate flexibility.

  If the structure of the fixing housing 55 is kept constant, the above-described operation panel unit 50 can be used only for the operation panel plate 54 in the case of a product specification change (for example, the number of light transmitting portions 53 is increased or decreased). There is an advantage that it can be dealt with if it is replaced, but there is a disadvantage that the number of parts is large. In order to solve this problem, it is conceivable that one of the functions of the lens plate 56 and the fixing housing 54 is shared with other parts and any of the parts is omitted. However, the material of the lens plate 56 is transparent. Therefore, it is impossible to share the function with other parts, and the fixing housing 55 has an elastic piece 55d formed on a part of the fixing housing 55 on the operator 51 of the push button at the time of operation by the user. An elastic restoring force is imparted, and this function cannot be shared by the lens plate 56 made of acrylic resin, which is a hard material.

  Accordingly, as a result of various studies, the present inventor has noticed that a lens plate with appropriate elasticity and transparency can be produced with the ABS resin, although the transparency is slightly inferior to the acrylic resin. In the panel unit, the lens plate was successfully provided with a function of imparting elasticity to the push button operator, and the present invention was completed. The present invention provides an operation panel unit configured with an operation button and a light-transmitting unit as an integral unit, and does not require a housing for fixing the operation panel unit to the main body side housing, and the number of parts is significantly reduced. It is an object to provide an operation panel unit that can be used.

The invention of claim 1 for achieving the above object comprises an operation panel plate having a push button operation element and an LED lamp translucent portion on the surface, and a lens plate fixed to the back surface of the operation panel plate. The operation panel unit has a tact switch located on the back of the push button operator via a lens plate and an LED lamp located on the back of the translucent part via the lens plate when assembled in the main body housing. The push button operator has a cross-shaped leg portion, and the entire lens plate is made of a transparent ABS resin, and the lens plate is placed on the back surface of the translucent portion from the LED lamp. draft is the lens portion is formed to condense light to the light transmitting portion, to the back position of the push button operating element, the legs so that the legs be movable in the longitudinal direction Guide portion of the push button operator is formed of, and the the bottom of the guide portion is formed with a rear view resilient piece substantially to have a flexible by-out U-shaped notch, said guide portion, The lens plate is formed to bulge into a vertically long cross shape, and a guide groove for guiding the leg portion is formed in the lens plate, and the tip of the leg portion is guided by the guide groove to form the elastic piece. in contact with the front side of, deflecting the elastic pieces, characterized in that the make contact before Symbol tact switch the rear side of the elastic piece.

  According to the present invention, as compared with the conventional operation panel unit, a housing for fixing to the main body side housing becomes unnecessary, and the number of parts can be greatly reduced.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view of the operation panel unit of the present embodiment as viewed from the front side, FIG. 2 is a perspective view of the operation panel unit of the present embodiment as viewed from the rear side, and FIG. It is a schematic front view which shows the printer apparatus 30 fixed so that it might expose. The operation panel unit 1 according to the present embodiment is a vertically long display having two push button operators 2 and 3 on the surface, and two light-transmitting portions 4 and 5 that are illuminated by LED lamps to be described later. An operation panel plate 6 and a lens plate 7 fixed to the back side of the operation panel plate 6 are configured. On the back surface of the operation panel 6, bosses 9 and 10 for fixing to a printed wiring board 8, which will be described later, and bosses 11, 12, and 13 for connecting and fixing the lens plate 7 are erected. In addition, a rectangular thick portion 6 a formed with a step is formed on the front surface of the operation panel 6, and the rectangular thick portion 6 a is formed on the front surface of the printer device 30 after being assembled into the printer device 30. To be exposed. The two push buttons 2 and 3 are a restart button and a stop button, respectively.

  Next, the lens plate 7 will be described. The lens plate 7 of the present embodiment is made of a transparent ABS resin plate as a whole, and the tips of the bosses 11, 12, 13 erected from the back surface of the operation panel plate 6 are fitted into holes formed at appropriate positions, It is fixed to the operation panel plate 6 with screws 14. In addition, lens portions 15 and 16 for condensing light from an LED lamp, which will be described later, are formed on the back surface positions of the light transmitting portions 4 and 5 of the operation panel plate 6, and a push button operation element supported by the operation panel plate 6. Guide portions 17 and 18 of push button operators for guiding the push button operators 2 and 3 in the front-rear direction are formed at the back and back positions of 2 and 3, respectively.

  The lens portion 15 is formed in a cylindrical shape extending through the plate portion 7a of the lens plate 7 in the front-rear direction, as clearly seen in the side view of FIG. It extends so as to be close to the LED lamp 19. A small-diameter pin-like portion 15 b is formed on the front surface side, and the pin-like portion is inserted into a small hole of the operation panel plate 6 to constitute the translucent portion 4. In the present embodiment, the printed wiring board 8 is fixed to the main body side of the printer device 30, and the operation panel board 6 is fixed to the printed wiring board 8. The lens unit 16 has a similar structure.

  Next, the guide parts 17 and 18 of the push button operators 2 and 3 will be described. As shown in an enlarged view in FIG. 5, the guide portion 17 is formed by bulging the plate portion 7a of the lens plate into a vertically long cross shape, and the tip of the push button operator 2 is inserted therein. It is like that. The push button operator 2 includes a circular portion 2a constituting a pressing surface by the user, and a leg portion 2b having a cross-sectional shape following the circular portion 2a. Inside the guide portion 17, the cross-shaped leg portion 2b is provided in the front-rear direction. A guide groove 17a is formed to guide it so that it can move only. Further, a notch 17b having a substantially U-shape in rear view is formed at the bottom of the guide portion 17, and a thin elastic piece 17c is formed by the notch 17b, and the U-shaped notch 17b and the guide groove 17a are formed. Connected. Accordingly, as clearly shown in FIG. 4, the push button operator 2 with the cross-shaped leg portion 2b inserted into the guide portion 17 has its tip abutted against the free end of the elastic piece 17c, and the circular portion 2a is pressed by the user. Then, the elastic piece 17c is bent rightward in FIG. The tact switch 20 on the printed circuit board 8 is positioned at the back surface of the guide portion 17 so that the switch head 20a of the tact switch 20 is pressed by the back surface of the bent elastic piece 17c. ing. The structure of the guide part 18 is the same as that of the guide part 17, and the push button operator 3 is also the same structure as the push button operator 2.

  The operation panel plate 6 and the lens plate 7 of the present embodiment are structured as described above. As shown in FIG. 2, the operation panel unit 1 is composed of the operation panel plate 6 and the lens plate 7 fixed to the back surface thereof. Configure. When the operation panel unit 1 is fixed to the printed wiring board 8 fixed on the main body side using screws 21 or the like, and the main body housing is further installed thereon, the front surface of the printer device 30 in the mode shown in FIG. The operation panel. When the user pushes the push button 2 on the operation panel, the tip of the push button operator 2 moves by bending the elastic piece 17c and presses against the switch head 20a of the tact switch 20 on the printed circuit board 8. Acts and switches the tact switch 20. At this time, since the lens plate 7 is entirely made of elastic ABS resin, the elastic piece 17c has sufficient elasticity, and the operation feeling obtained when the user operates the push button operator 2 is as follows: Same as the conventional operation panel unit. Further, since the cross-shaped cross-shaped leg portion 2b of the push button operator 2 is guided by the guide groove 17a of the guide portion 7, when the push button operator 2 is pushed by the user, it moves smoothly without rattling.

  Further, the light emitted from the LED lamp 19 is condensed by the lens portion 15 of the lens plate 7 and lights the translucent portion 4 of the operation panel plate 6. However, since the lens plate 7 is a sufficiently transparent resin, the translucent light is transmitted. The illuminance sufficient for the portion 4 is obtained so that there is no practical problem. If the illuminance of the translucent portion 4 is insufficient, sufficient illuminance can be obtained by increasing the diameter of the small hole opened in the operation panel plate 6 and increasing the diameter of the pin-shaped portion 15b of the lens portion 15. .

  Accordingly, the lens plate 7 is made of a transparent ABS resin in the present embodiment, but it may be a resin having a degree of elasticity equivalent to that of the ABS resin, even if the resin is slightly inferior in transparency. Thus, it is possible to configure the lens plate 7. Further, in the present embodiment, the structure of the guide portions 17 and 18 is formed in a shape bulging in a vertically long cross shape in accordance with the structure of the push button operation elements 2 and 3, and a guide groove 17a is formed there. However, the shape of the guide parts 17 and 18 can be various according to the shape of the tip part of the push button operation elements 2 and 3. Furthermore, in the present embodiment, the elastic piece 17c is formed by cutting the lens plate 7 into a substantially U shape when viewed from the back. For example, the lens plate is formed in a circular shape leaving one or a plurality of thin connection portions. Various modifications such as cutting into a shape or a rectangular shape, and using a circular portion or a rectangular portion connected by the thin connecting portion as an elastic piece are possible.

The front perspective view of the operation panel unit which concerns on one Embodiment of this invention. The rear perspective view of the operation panel unit. The front view of the printer apparatus which assembled | attached the operation panel unit. The partial cross section side view of the same operation panel unit. The expanded perspective view which shows the structure of the same pushbutton operator and a guide part. The front perspective view of the conventional operation panel unit. FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Operation panel unit 2 Push button operation element 3 Push button operation element 4 Light transmission part 5 Light transmission part 6 Operation panel board 7 Lens plate 8 Printed wiring board 15 Lens part 16 Lens part 17 Guide part 17a Guide groove 17b U-shaped cutting Notch 17c Elastic piece 18 Guide part 19 LED lamp 20 Tact switch

Claims (1)

A push button operator on the surface and an operation panel plate having a translucent portion of the LED lamp, and a lens plate fixed to the back of the operation panel plate. An operation panel unit in which a tact switch is positioned via a lens plate on the back of the LED lamp and an LED lamp is positioned via the lens plate on the back of the translucent part,
The push button operator has a cross-shaped leg portion,
The entire lens plate is made of transparent ABS resin ,
The lens plate, the rear position of the translucent portion, the lens portion for condensing light to the light transmitting portion of the LED lamp is formed, the rear position of the push button operator, the leg before and after A guide part of a push button operator for guiding the leg part is formed so as to be movable in the direction , and the bottom part of the guide part is provided with flexibility by a substantially U-shaped notch in rear view. the elastic piece is formed,
The guide part is formed by bulging the lens plate into a vertically long cross shape, and a guide groove for guiding the leg part is formed therein,
Tip of the leg portion is guided by the guide groove comes into contact with the front surface side of the elastic pieces, to deflect the elastic piece, and wherein the make contact before Symbol tact switch the rear side of the elastic piece Operation panel unit to be used.

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