KR100399172B1 - Snap-action switch with a piano key-touch handle and a process for decorating the piano key-touch handle - Google Patents

Abstract

A snap action switch is provided with a piano key-touch handle for the operation of the switch. The switch has a housing in which at least one fixed contact is housed, a moveable contact fastened to the fixed contact and a push button movably supported in the housing between a normal position and a pressurized position. The push button is biased to its normal position by the return spring. If the button is kept in this state until the button is pressed again, the button performs a snap action to connect the movable function contact to the fixed contact in association with the movable contact. The handle is pivotally supported at one end of the housing and is fastened to the push button to move the push button from the normal position to the pressed position with respect to the deflection of the return spring.

The handle is made of a plastic material and has decorative colored marks formed according to the reaction of the plastic material with the laser beam irradiated on its front surface.

Therefore, the colored mark can be accurately reproduced on the handle and it is low in cost compared to the decoration method by the conventional mold.

Description

How to decorate the piano handle switch and piano handle {SNAP-ACTION SWITCH WITH A PIANO KEY-TOUCH HANDLE AND A PROCESS FOR DECORATING THE PIANO KEY-TOUCH HANDLE}

The present invention relates to a piano handle switch and a method of decorating a piano handle provided with a snap action switch having a piano key-touch handle for switch operation.

Conventionally, a piano handle is arranged on the front side of a switch body including a switch body having a push button handle that can be pushed, with one end pivot mounted on the switch body and the rear side contacting the push button handle. A piano handle switch is provided. The piano handle is configured to press-fit the other end with one end as a support point, similar to the keyboard of the piano. In addition, the piano handle has a larger operation surface than the push button handle, and it is also possible to perform the push operation using a part other than the finger.

As a piano handle type switch of this kind, for example, as disclosed in Japanese Patent Application Laid-Open No. 10 (1998) -326539 and Japanese Patent Application Laid-Open No. 10 (1998) -326539, by a push operation of a pushbutton handle. A switch body comprising a switch body for contact switching of a contact portion, and a piano handle having one end pivotably rotatably supported on the front face of the switch body and a push handle operated by pressing the other end. It is disclosed to use a name cover in which a design ink layer is in-mold transferred to a surface by inserting a film having a design ink layer on a back surface thereof in a mold.

In this piano handle type switch, a plurality of exterior lines are formed in a stripe shape on the front face of the name cover mounted on the front face side of the piano handle. Here, the name cover is formed of a transparent material in the center portion so that the notation of the name card disposed on the back side can be seen from the outside, and the exterior line is formed at a portion except the center portion.

However, piano handles of different sizes are used in the above-described mounting frame depending on the number of switch bodies.

Therefore, in the above-described piano handle type switch, in-mold transfer forms a colored portion such as an outer line at a portion except the center portion of the name cover, but in-mold transfer has a high cost of the transfer film and a high molding cost, In addition, since the positional accuracy of the exterior line transferred to the front of the piano handle is not very good, there is a problem that the manufacturing cost is increased and the durability of the exterior line is not sufficient.

In view of the above problems, the present invention is not only to provide a snap-action switch with an improved piano key-touch handle which is manufactured at low cost, but also to implement decorative colored marks completely and accurately.

1 is a front view of a switch according to the first embodiment of the present invention.

2 is an enlarged perspective view for explaining an installation system for the switch.

3a and 3b show a detachable hinged connection of the handle to a switching housing;

4 is a perspective view of a handle used for the switch.

5 and 6 are schematic diagrams for explaining different ways of scanning a laser beam onto the handle to draw colored lines, respectively.

7 and 8 show different stripes formed on the handle.

9 is an enlarged perspective view of the handle;

10 is an enlarged perspective view of the nameplate support unit.

11 is a perspective view of a switch without a handle;

12 is a plan view of the switch.

13 is a bottom view of the switch.

14 is a side view of the switch.

15 is a front sectional view of the switch.

16 is an enlarged perspective view of the switch.

Fig. 17 is a plan view showing the internal structure of the lower part of the switch.

Fig. 18 is a bottom view showing the internal structure of the upper part of the switch.

19 is a circuit diagram of the switch.

20 is a plan view of the handle surrounded by a face plate;

21 is a front sectional view of the installation system.

FIG. 22 is a side view of the installation system in which the switch is mounted to the mounting frame and connected to the handle with a face plate associated with the mounting frame. FIG.

23 is another side view of the installation system.

Fig. 24 is a front view of the piano key-touch handle used for the snap action switch according to the first embodiment of the present invention.

25 is a front view of another piano key-touch handle usable for the switch.

26 is a perspective view of different handles usable for the switch.

27 shows two handles suitable for the face plate.

28 is a cross-sectional view of the handle.

29 is a plan view of the different handles used for the switch.

30 is a front sectional view of the modified switch.

Fig. 31 is a plan view for explaining the internal structure of the lower part of the switch.

32 is an enlarged perspective view of the switch.

33 is a front sectional view of another modified switch.

34 is an enlarged perspective view of the switch.

35 is a perspective view of the switch.

36 is a circuit diagram of the switch.

37 is a plan view of the switch.

38 is a front view of the switch shown with the handle.

39 is a bottom view of the switch.

40 is a side view of the switch.

41 shows two different handles suitable for the same face plate.

The switch according to the invention comprises a housing for receiving at least one fixed contact, a movable contact fastened to the fixed contact and a push button movably supported in the housing between a normal position and a pressurized position.

The push button is biased to its normal position by the return spring. If the button is kept in this state until it is pressed again, the push button is connected to the movable contact via a lever for conveying a toggle spring to connect the fixed contact with the movable contact. Do this.

A piano key-touch handle is pivotally supported at one end in the housing and is fastened to the push button to press the push button from the normal position to the press position with respect to the deflection of the return spring.

The handle is made of a plastic material and has decorative colored marks formed according to the reaction of the plastic material with the laser beam irradiated on its front surface. Thus, the vegetarian mark can be accurately replicated on the handle and costs less than the decorative technique by conventional molds.

Furthermore, the colored marks formed by the irradiation of the laser beam last longer without being deteriorated than by the decorative technique by the mold, thereby increasing durability.

The decorative colored mark is formed by carbonization of the plastic material by the laser beam, and can be realized without roughness and heterogeneity of the handle surface.

The decorative colored marks can be designed as stripes with parallel lines, and can be generated simultaneously by irradiating a plurality of laser beams emitted from one laser source. Therefore, each line can be reproduced with a relatively weak laser power using only one laser source, and each line can be softened to have a comfortable touch.

The handle is preferably provided with a transparent name plate window exposed from the front and a lid for closing the name plate window rear end to fix the name plate between the window.

The nameplate window constitutes a single unit, including a lid, for easily assembling a nameplate window on the handle to indicate the purpose or use of the switch described on the nameplate.

Preferably, the nameplate window has a curved surface at the rear to allow the nameplate to be easily inserted into or detached from the nameplate window. Furthermore, the nameplate window may include a stud at the back of the nameplate window to prevent the nameplate from unexpectedly adhering to the backside due to electrostatic forces generated between the nameplate and the nameplate window back.

The nameplate window is fixedly enclosed by a frame and attached to the periphery of the opening by ultrasonic welding at the opening of the handle with the frame. Thus, the nameplate window can be fastened to the handle simply and firmly.

The mall handle may be molded with an integral actuator for engagement with the handle to ensure an accurate connection between the handle and the button for reliable switching operation.

The handle is provided with a touch guide protruding from the front side of the opposite end portion of the one end pivotally supported by the housing, so that the user can easily check the correct position to operate the switch even in the dark.

The switches are designed in standardized sizes in which three switches can be mounted side by side in one standard mounting frame. The mounting frame has a mounting opening through the front ends of the three switches that are exposed to engage the push button with the handle.

The mounting frame is used to install the switch on the wall of a house or other building and is covered by a face plate having a front opening larger than the mounting opening to accommodate a handle provided in each switch for aesthetics.

The handle is designed in a first specification size so that the three respective handles are received side by side in the front opening. The first specification size of the handle is determined such that the three aligned handles can completely cover the front opening. When two switches are mounted on the same standard mounting frame and the same face plate is located on top of the mounting frame, the handle is in a second specification size determined such that the two aligned handles can completely cover the front opening. Is designed.

In addition, when one switch is mounted on the same standard mounting frame and the same face plate is located on top of the mounting frame, the handle is designed in a third standard size determined such that one handle can completely cover the front opening. do. Thus, the same face plate can be used even when one to three switches are mounted to the mounting frame.

Advantageously, said switch comprises a lamp for generating light indicative of a short circuit of said movable contact from said fixed contact.

The handle has a light arrangement member for guiding the light to the front of the handle so that the state of the switch is easily recognized. The light guide member is formed with wrinkles for emitting the light, thereby increasing the viewing angle of the light.

Moreover, a prism may be used in combination with the light guide member to collect the light to define one side of the light guide member and guide the light to an indicator exposed on the front of the handle. One side of the prism is fastened to the indicator, and the other side extends in the vertical direction of the handle to form a light receiving surface wider than a cross section directed to the indicator. The prism is ultrasonically welded to the back side of the handle such that at least a portion of the wide light receiving surface is positioned corresponding to the lamp of the switch.

Thus, even when the handle is disposed with the indicator vertically offset from the lamp of the switch, the light from the switch is successfully collected by the wide light receiving surface and directed through the prism to the indicator.

In order to realize decorative stripes comprising parallel colored lines, the laser beam can be irradiated to the handle in a single direction to consistently implement the vertical end of each line. Instead, the laser beam can be irradiated in both directions, for example in the front-rear direction, for rapid formation of colored lines. In this regard, several laser beam irradiators can be used to increase the efficiency of forming several stripes including several colored lines.

The above advantages and other features of the present invention will become more apparent from the following detailed description of the preferred embodiment of the present invention with reference to the accompanying drawings.

1 and 2, a snap action switch according to a preferred embodiment of the present invention is shown.

The switch 10 has one side of the housing 12 for pressing the push button 70 and the housing 12 provided with a push button 70 for opening and closing a circuit connected to the switch 10. Piano key-touch handle 100 is pivotally supported at the end.

The handle 100 is formed in a generally rectangular shape having a larger dimension than the push button 70 so that the user can easily operate the handle 100 with a finger or the like. As shown in FIG. 2, the switch 10 is secured by a standard mounting frame 200 with a rectangular mounting opening 202 having a defined size that can accommodate up to three switches in use.

The mounting frame 200 is provided for mounting the switch or switches by fixing the mounting frame 200 to a protective box buried inside a wall of a building, for example the wall.

The mounting frame 200 is covered with a holder frame 220, and the holder frame 220 is covered with a face plate 240 to expose one handle 100 or handles on the face plate 240.

The holder frame 220 extends through holes 224 formed at opposite ends of the holder frame 220, and screws are fastened to screw holes 204 formed at opposite ends of the mounting frame 200. 255 is fastened to the mounting frame 200.

The face plate 240 is detachably mounted to the holder frame 220 and has a size substantially the same as that of the holder opening 222 of the holder frame 220 but larger than the mounting opening 202 of the mounting frame 200. It has a rectangular face opening 242.

According to the mounting frame 200, the face plate 240 and the holder frame 220 are equal to the mounting frame 200 even in the case of one switch or three switches carried by the mounting frame 200. It is provided in a standard form with a face opening 242 and a holder opening 222 defined to be applicable.

However, as will be described later, handles having different sizes may be employed depending on the number of switches 10 carried by the mounting frame 200.

As shown in FIGS. 3A and 3B, a pair of hinge supports protruding from the upper surface of the switch housing 12 respectively corresponding to the bearing slots 102 formed at one end of the rear side of the handle 100 ( By employing 22), the handle 100 is pivotally supported by the switch 10 and detachably supported.

Each bearing slot 102 is provided with a catch spring 110 that detachably holds the hinge support 22. That is, the catch spring 110 is fixed to the anchor 111 with respect to the handle 100, the elastically deformable and the slot so that the hinge support 22 passes above the receiving protrusion 112 It is formed with a receiving protrusion 112 for holding the support 22 in the.

Therefore, the handle 100 may be attached to the switch 10 after the switch 10 is fastened to the mounting frame 200. Actuators 108 integrally molded to press the push button 70 are formed in the center portion behind the handle 100.

A pair of catches 101 protrude rearward from the handle 100 at opposite ends of the bearing slots 102, and the catch 101 is a slot corresponding to an upper end of the switch housing 12. It is loosely fixed in the field 29, and is fastened around the slot 29 to prevent unexpected removal of the handle 100 during use.

The handle 100 is in constant contact with the actuators 108 together with the push button 70 during the reciprocating motion of pressing the push button 70 to open and close the circuit. This process is performed by the return spring 74 to operate the push button 70 upward with respect to the handle 100 from the pressed state to the normal state, as will be described later. Thus, the handle 100 is fastened to the push button 70 for switching purposes and has a piano key touch feel switching function.

As shown in FIG. 4, the handle 100 has two stripes each composed of parallel colored lines 121 printed by the reaction of a laser beam and a plastic material on which the handle 100 is molded. It is provided with a decorative colored stripe 120 formed as. As the plastic material, for example, an ABS resin containing a pigment may be used, and partially carbonized by irradiating the laser beam to have a darker color than the background color of the handle 100 not irradiated with the laser beam. do.

The laser beam is irradiated onto the front surface of the handle 100 in a single direction as shown in FIG. 5 or in both directions as shown in FIG.

When simultaneously forming a plurality of spaced stripes 120 as shown in FIGS. 7 and 8, a corresponding number of laser beam generators (not shown) are used to form three or four colored lines, respectively. It is irradiated simultaneously to form streaks 120 at the same time. As the laser beam generator, a Q-switch laser for generating a laser beam having a wavelength of 1.06 μm may be used.

The laser has its power, irradiation size, Q-rate and excavation size (depending on irradiation speed and cue-switching frequency) to be adjusted so that the desired dimensions and number of colored lines per unit stripe are Coloring lines 121 having color quality may be formed. For example, if the background area not irradiated with a laser beam has a surface roughness Rp to Rm of 0.5 µm or less, each line has a length of 23.5 mm to form an area including and surrounding the colored lines. And a width of 0.37 mm and a surface roughness Rp to Rm of 10 µm or less. The color difference ΔE between the colored line and the background is three or more so that the colored line 121 stands out to give the user a sufficiently decorative image.

2, 4, and 9, the handle 100 includes a light guide member 130 for guiding light emitted from a lamp 83 coupled in the switch housing 12 to indicate a switching state. Comes with The light guide member 130 made of a transparent resin has an opening 103 of the handle 100 together with the integral flanges 132 of the light guide member 130 fastened to the rear of the handle 100 by ultrasonic welding. Is inserted into Accordingly, the light guide member 130 fastened to the handle 100 is limited to an indicator that allows the front end portion of the light guide member to determine the switching state. The light guide member 130 includes a pleated back light receiving surface 131 to emit incident light to increase the viewing angle. The handle 100 is formed with a touch guide member 170 protruding at an end opposite to an end pivotally supported on the surface thereof, so that the user can easily confirm the correct operation of the switch even in a dark environment.

9 and 10, the handle 100 is also provided with a nameplate support unit 140 for authenticating the special use of the switch.

The unit 140 is designed to be fixed within the opening 104 of the handle 100 as a single assembly, with letters or marks printed thereon to identify the transparent nameplate window 142 and the special use of the switch therebetween. It consists of a lead 150 for supporting the name plate 160.

The name plate window 142 is made of a transparent plastic formed in a shape fixed to the opening 104, and is formed on the rear surface of the handle 100 together with integrated side flanges 143 for ultrasonic welding.

The lid 150 is also made of a plastic material and is configured to have a pair of shafts 154 rotatably received in corresponding bearing holes 144 at the rear of the side flange lamp 143. 150 may pivot to open and close the back of the name plate window 142. The leads 150 each comprise a pair of elastic legs 151 provided with hooks 155 for latching on a notch 145 formed behind the side flanges 143. A handle 156 is formed between the hooks 155 to open the lid 150. The rear surface of the nameplate window 142 is surrounded by the side flanges 143 to form a recess in which the nameplate 160 and the lid 150 are located. The bottom surface of the recess or the rear surface of the nameplate window 142 is formed with a bend so that the nameplate 160 can easily slide into and out of the recess. In addition, the rear surface of the nameplate window 142 is provided with a small stud (not shown) to be in contact with the flat plate 160, whereby the nameplate 160 by the electrostatic force generated therebetween. This prevents unwanted attachment to the back of the nameplate window 142.

The name plate window 142 is also formed with ribs 147 fastened to the grooves 105 at the periphery of the opening 104 of the handle 100, such that the side flanges 143 are always on the handle 100. The plate unit 140 is temporarily held on the handle 100 before ultrasonic welding. The nameplate window 142 is adjacent to the side flanges 143 with slots 148 passing through the actuators 108 therethrough for engagement with the push button 70 of the switch 10. Is provided.

11 to 18, the detailed structure of the switch 10 will be described. The switch 10 includes a lower case 11 and an upper case 21 which are assembled to each other by fastening the nubs 13 of the lower case 11 to the hook holes 23 of the upper case 21.

The upper case 21 holds a push button 70 driven by the handle 100 and is provided with the hinge support 22 for pivotal support of the handle 100.

As shown in FIGS. 15 and 16, the lower case 11 includes first and second terminals 30 and 40 for connection to an external circuit including a load regulated by the switch 10. Is accommodated).

The switch, shown as a single-pole single-projection type, is in continuous electrical contact with the second terminal 40 and can move to engage and disengage to a fixed contact 32 formed at one end of the first terminal 30. With a movable contact 42.

The first terminal 30 includes a pair of terminal legs 34 accessible to the holes 14 in the bottom surface of the lower case 11 so as to be connected to the wirings, respectively.

Similarly, the second terminal 40 includes a pair of terminal legs 44 accessible to the holes 14 in the bottom of the lower case 11 so as to be connected to the wirings, respectively. The movable contact 42 is electrically connected at its lower end to a seating plate 41 which extends integrally from the second terminal 40.

Grip springs 35, 45, etc., which quickly connect the wiring to corresponding terminal legs 34, 44, respectively, cooperate with the terminal legs 34, 44, respectively. That is, after the wiring is fastened to the excavated end 37, 47 so as to be firmly connected to the corresponding terminal legs 34, 44, etc., the wiring is connected to the holes 14, 15, etc. By simply inserting the wiring through it, it is easily guided to engage between the corresponding terminal legs 34, 44, and the grip arcs 36, 46 of the springs 35, 45. The release buttons 38, 48, and the like are provided in connection with the terminal legs 34, 44, respectively, and may be fastened to the excavated ends 37, 47, etc. of the springs 35, 36. The release buttons 38, 48 are also accessible through the holes 16, 17, etc. of the bottom of the lower case 11, for example by the tip of the screw driver. When pressed, the release buttons 38, 48, etc. are moved to move the excavated end from the wire while elastically deforming the grip spring, so that the wire is easily separated from the excavated end and the corresponding terminal. The wiring is easily separated from the lower case 11 so that the wiring can be immediately disconnected from the wiring.

As shown in FIG. 15, the movable contact 42 defines a pair of horizontal pivot arms 43 protruding from the lower end of the movable contact 42 of the sidewalls of the lower case 11. By fastening into the V-notches 18, it is formed to have a generally flat configuration that is pivotally supported by the lower case 11. The movable contact 42 is associated with the push button 60 via a toggle spring 60 and a cradle lever 62.

The cradle lever 62 is pivotally supported by the upper case 21 to pivot about a horizontal axis, and conveys the toggle spring 60. The toggle spring 60 is squeezed between the cradle lever 62 and the movable contact 42, in response to the push button 70 being pressed or against or against the fixed contact 32. A snap action is performed to quickly connect or disconnect the movable contact 42 from 32 and remain in that state until the push button 70 is pressed again.

An upper end of the cradle lever 62 protrudes onto a bottom surface of the recess 24 formed on an upper surface of the upper case 21 to receive a lower portion of the push button 70.

The push button 70 is supported by the upper case 21 to move vertically between a normal or non-pressurized position and a pressed position, and is deflected by a return spring 64 facing the normal position.

The push button 70 transfers a slider 72 that is horizontally movable relative to the push button 70 at a lower side thereof, and is able to engage with one of the protrusions 64 at the upper end of the cradle lever 62. .

The slider to smoothly switch the vertical movement of the button 70 to the pivoting action of the cradle lever 62 to ensure a snap switching action in response to the button 70 pressed by the handle 100. 72 is interposed between the push button 70 and the cradle lever 62.

That is, when the push button 70 is pressed, the slider 72 is engaged with one of the protrusions 64 and an end thereof so that the slider 72 pivots as the cradle lever 62 pivots. By pivoting the cradle lever 62 to open and close the contacts while sliding horizontally along 64, the slider 72 is placed on the cradle lever 62 so that the snap-action switching is successfully performed. It is fastened continuously.

When the pressing force is removed, the push button 70 returns to its normal position with the handle 100, during which the slider 72 also returns to the neutral position and subsequently pushes to switch the switching state. In the pressing of the button 70, the protrusion 64 may be fastened. For this purpose, the slider 72 is formed of an integral return spring.

The lamp 83 is received at one end of the upper case 21 and is transported on a lamp holder 80 that matches the lamp 83 with the lamp window 26 on the upper case 21.

As shown in FIG. 19, the lamp holder 80 also carries a current limiting resistor 82 connected in series to the lamp 83 across the fixed contact 32 and the movable contact 42. do. That is, the lamp 83 has one end connected to the second terminal 40 through the resistor 84 and the other end connected to the second terminal 30. For this purpose, the lamp holder 80 has a first lead 81 connected to the first terminal 30 and a second lead 82 connected to the second terminal 40. The lamp 83 thus connected emits light when the switch 10 is operated without being connected to the load from the power source.

As shown in FIG. 2, the slots 206 are arranged along the longitudinal direction of the side racks 205 of the mounting frame 200 with tenons 27 on opposite end sidewalls of the upper case 21. By fastening to an optional set of, the switch 10 is firmly fixed to the mounting frame 200.

As shown in FIG. 14, the tenons 27 of one side end side wall of the upper case 21 are positioned on the elastic leg 28, and the elastic leg 28 is cut from the rest of the end side wall. It can be detached and deformed to fasten and disengage the tenons 27 quickly and easily into and out of the slot 206.

In addition, as shown in Fig. 14, a production mark 19 is printed on one end wall of the lower case 11 in order to confirm the production number, the form, the speed, the usage and other information of the switch. The production mark 19 is printed by irradiating a laser on a wall of the lower case 11 formed by molding a plastic material including a silicon compound such as silicon or a pigment. In the same way, as shown in Fig. 13, a mark 19A is printed on the bottom surface of the switch housing 12 so as to confirm the contact arrangement.

20-23 show a complete system in which one switch 10 is fastened to the mounting frame 20 and connected to a handle 100 having special dimensions to fit a face plate 240 of standard size.

24 and 25, the handle 100 may be designed to be distributed to the light guide member or the name plate holder unit by utilizing the above-described embodiment.

26 to 28 show a second type of handle 100 having dimensions suitable for a system in which two switches 10 are mounted in one mounting frame. In this case, the two switches 10 are held at the upper end and the lower end of the mounting hole of the mounting frame 220 used with the standard face plate 240.

The handle 100 of the second type has dimensions such that the two handles 100 completely fill the face openings 242 of the face plate 240, as shown in FIG. 27. In order to successfully transmit light from the lamp of the switch to the corresponding light guide member 130 of the handle 100, a prism 134 is additionally added to the light guide member 130, as shown in FIG. 28. Connected to the light guide member 130 to receive light from the lamp of the switch disposed in a vertical offset connection from the light guide member 130.

The light guide member 130 defines an indicator exposed on the front surface of the handle 100 at a front end thereof so as to display light in a switched state.

The prism 134 has a central end 135 having a vertical dimension substantially the same as the indicator. A pair of extensions 136 have respective rear light receiving surfaces 137 extending upwards and downwards from the rear of the central end 135 and defining a light receiving recess 138 therebetween. Thus, the prism 134 has three vertically spaced light receiving ends capable of receiving light from the adjacent lamp collecting the incident light towards the central end 135, through the central end 135. Light is successfully guided to the light guide member 130.

Subsequently, even in the case of the two handles 100 of the same configuration having the light guide member 130 in the vertical center which can be used for a system in which two switches are fastened to the top and bottom of the mounting frame, The light guide members 130 can successfully receive light from the vertical offset ramps of each switch.

In other words, exactly the same handles 100 can be used for the two switch mounting systems. The central end 135 has a front surface that is corrugated 139 so as to emit light guided through the light arrangement member 130 to improve visibility.

FIG. 29 shows another system in which the three switches are fastened in close proximity to one another and covered with three identical handles 110, respectively. In this case, the three switches 10 are located in the mounting opening 202 of the mounting frame 200.

The mounting opening 202 has a vertical length smaller than the face opening 242 of the face plate 240, and the lamps of the upper and lower switches are from the light guide members 130 of the upper and lower handles 100. While offset vertically, the lamp of the center switch is aligned perpendicular to the light guide member 130 of the center handle 100.

The handle 100 has the same structure as shown in FIG. 28 having a combination of a light guide member and a prism. Thus, light emitted from the upper and lower switches can be directed to the light guide member 130 through the extensions 135 of the prism 134, while light emitted from the central switch is directed to the prism 134. Can be led to the light arrangement member 130 through the light receiving recess 138.

Thus, only one type of the handle 100 can be used in the three switch systems, while it can successfully guide light from each switch in front of the corresponding handles 100.

Figures 30 to 32 show a modified switch which is identical to the embodiment described above but designed without a lamp in accordance with the present invention. Like parts are denoted by like reference numerals. Therefore, repetitive description is omitted.

33-40 show additional lamps 86 to indicate the load driven by a three-way switch circuit having a single-pole double-projection switch and two switches connected in series with the load of the power supply according to the present invention. Except that provided with another modified switch the same as the above-described embodiment. The same members are denoted by the same reference numerals and repeated description thereof will be omitted. The switch 10 additionally includes a third terminal 50 for conveying an additional fixed contact 52 opposite the fixed contact 32 of the first terminal 30. 70 is pressed, the movable contact 42 is movable between the fixed contacts 32, 52 so as to be selectively engaged with either of the fixed contacts 32, 52, and This state is maintained until the push button 70 is pressed again. The same grip spring 55 cooperates with the terminal leg 54 of the terminal 50 for quick connection and disconnection of the wiring. The terminal leg 54 is accessible through a hole 15A in the bottom of the housing 12.

The lamp 86 is transported with the lamp 83 on the lamp holder 80 to emit light through the lamp window 26.

The lamp 86 is embodied as a light emitting element (LED) connected to a current transformer 88 connected to a current path between the movable contact 42 and the second terminal 40, as shown in FIG. 36. .

That is, the light emitting device 86 is connected in parallel to the die rod 87 across the auxiliary wiring of the transformer 88, while the main wiring of the transformer 88 is connected to the second terminal 40. It is connected between the movable contacts 42. Thus, when the three-way switch is closed, current flows through the main wiring of the transformer 88, so that the light emitting element 86 is lit to indicate the operating load.

As shown in FIG. 33, the current transformer 88 is disposed at the center bottom of the lower case 11. The movable contact 42 is electrically connected at its lower end to a seating plate 41 which is connected to the second terminal 40 via the main wiring of the transformer 88.

The lamp 83 is connected in series with the resistor 84 across the fixed terminals 32, 52, and emits light when the three-way switch circuit is opened to stop the load. The light emitting device 86 emits light, for example, light emitted from the lamp 83, for example, white light and other red light, so that the light emitting device 86 is normally displayed through the light guide member 130 of the handle 100. As the color of light, the user can easily grasp the switching state.

That is, the light emitting element 86 emits red light to indicate the operation of the load, while the lamp 83 emits white light to indicate the stop of the load. FIG. 41 shows an example of two handles 100 provided in conjunction with two switches fastened to a mounting frame. Of course, the switch according to the present modification can be used in conjunction with handles having different sizes as shown in FIGS. 20 and 29.

Thus, the present invention not only provides a snap-action switch with an improved piano key-touch handle that is manufactured at low cost, but also has the effect of fully and accurately embodying decorative coloring marks.

Claims (20)

A housing for receiving therein at least one fixed contact and a movable contact engageable with the fixed contact therein, and a push button movably supported in the housing between a normal position and a pressed position, wherein the push button is moved by the return spring to Biased to a normal position, the push button connects the movable contact and the fixed contact when the push button is pressed and supports a snap operation of supporting the movable contact in this connected state until the push button is pressed again; And a piano key-touch handle pivotally supported at one end thereof on the housing, the handle being pushed from the normal position against the bias of the return spring. Piano key fill switch including a combination of the push button to move to the pressed position In the snap action switch having the tooth performance, Said piano key-touch handle being made of a plastic material and having a front surface provided with a decorative colored mark produced by the reaction of said plastic material with the irradiated laser beam. delete The method of claim 1, And the decorative colored mark is formed by carbonization of the plastic material and a laser beam. The method of claim 1, A piano handle switch in which the decorative colored mark is designed in stripes with parallel colored lines. The method of claim 1, Said handle having a transparent nameplate window exposed on the front side of the handle, said lid closing said rear end of said window to support said nameplate between the window and the lid. The method of claim 5, And the name plate window supporting the lid to constitute a single unit assembled within the handle. The method of claim 5, And the name plate window has a rear rounded curved surface in contact with the name plate. The method of claim 5, And a name plate window having a stud in contact with the name plate on its rear surface to prevent the name plate from being attached to the rear of the name plate window. The method of claim 5, And the name plate window is secured and enclosed by a flange and assembled within the opening of the handle with the frame and ultrasonically welded to the handle at the outer periphery of the opening. The method of claim 1, A piano-handle-type switch that is shaped such that the handle has an integral actuator coupled with the push button. The method of claim 1, And a touch guide protruding from a portion of the handle, the front surface of the handle being opposed to one end of the handle pivoted to the housing. The method of claim 1, The switch is configured in a standard size such that three switches can be fixed side by side to a standard mounting frame, the mounting frame having a mounting opening through which the front end of the switch is exposed to engage the push button with the handle; The handle is of a standard size so that the three handles arranged side by side can be received in a face opening of a face plate positioned over the mounting frame so as to be connected with the switch respectively, wherein the face opening is larger than the mounting opening. The standard size of the handle is determined such that three handles arranged side by side fully occupy the face opening. Piano handle switch. The method of claim 1, The switch is configured in a standard size such that three switches can be fixed side by side to a standard mounting frame, the mounting frame having a mounting opening through which the front end of the switch is exposed to engage the push button with the handle; The handles are of a standard size such that the two handles arranged side by side are received in a face opening of a faceplate positioned over the mounting frame so as to engage with the two switches fixed to the mounting frame, respectively. Configured to have a standard size of two handles arranged side by side received in a face opening of a face plate located above the mounting frame for connecting two switches to the mounting frame, the face opening being larger than the mounting opening, The standard size of the handle is determined such that the two handles arranged side by side completely occupy the face opening. Piano handle switch. The method of claim 1, The switch is configured in a standard size such that three switches can be fixed side by side to a standard mounting frame, the mounting frame having a mounting opening through which the front end of the switch is exposed to engage the push button with the handle; The handle is sized to be accommodated in a face opening of a face plate positioned over the mounting frame such that one handle is engaged with a switch fixed to the mounting frame, the face opening being more than the mounting opening. Large, the size of the handle is determined such that one handle fully occupies the face opening Piano handle switch. The method of claim 1, The switch includes a lamp for emitting light indicating that the movable contact has been disconnected from the fixed contact, The handle is provided with a light guide for directing the light onto the front of the handle, the light guide being provided with a pleat that emits light. Piano handle switch. The method of claim 1, The switch includes a lamp that emits light indicating that the movable contact has been disconnected from the fixed contact, The handle is provided with a prism that collects light and directs the light to an indicator on the front of the handle, The prism has a front end that mates with the indicator and a rear end that enlarges the vertical dimension of the handle to form a wide light receiving surface covering a wider range than the vertical dimension of the indicator, The prism is ultrasonically welded to the back side of the handle such that at least a portion of the wide light receiving surface faces the lamp of the switch. Piano handle switch. A method for decorating a piano key-touch handle according to claim 4, And scanning the laser beam in a single direction to implement the stripes. A method for decorating a piano key-touch handle according to claim 4, And scanning the laser beam in both directions to implement the stripes. The method of claim 17, A method of decorating a piano handle that simultaneously realizes a plurality of the stripes using a plurality of laser beam irradiation devices. The method of claim 18, A method of decorating a piano handle that simultaneously realizes a plurality of the stripes using a plurality of laser beam irradiation devices.