JPH01296516A - Back-lighted push button switch - Google Patents

Abstract

PURPOSE:To facilitate production of a switch case by preparing a plurality of elastic arms with engaging stopper projections provided on the top thereof on a switch base and forming pushing strips for releasing stoppage in one body with the outer surface of the arms as a set. CONSTITUTION:This switch has a structure divided into three components a comprising a switch case 3 composed of a switch base 41A and a pair of switch covers 41B and 41C placed on its both sides, a pair of elastic arms 50 and an engaging strip 59 projected from the base 41A, and a recess for accommodating a microswitch 47 formed between the base 41A and the covers 41B and 41C. Respective external ends of the outer terminals 76, 77 and 78 of the microswitch 47 accommodated within a space between the covers 41B and 41C and the base 41A are bent in L-form, the bent strips 43c, 44c, 76a, 77a and 78a are placed along the external surfaces of the covers 41B and 41C to be fixed onto the base 41A, and the bent strip of an indicator connector terminal 26 on the side of an indicator unit 1 is placed along the external surface of the base 41A. This arrangement facilitates molding process of the base 41A and covers 41B and 41C, thus facilitating assemblage of the switch case 3.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an illuminated pushbutton switch that is attached to a control panel or the like.

<Prior art and problems> This type of switch generally includes a display unit having an operation block with a built-in display 2:), and a main body case of this front small unit that is held so as to be able to pivot in the front and back direction. A switch with a microswitch that is opened and closed by pushing the 1° operation block through the plunger A: L
The leek I and the leek are removably connected to each other.

Conventionally, as a coupling structure between the display unit and the switch unit, as shown in FIG. A circular pressure piece 105 is placed on the I)11 side of the I03i six-piece microswitch 104.
(Fig. 10) A plurality of pairs with one pair connected as one silk
Bullet/V1 arm 106.107 with switch case 110
1. An engaging protrusion J+ is provided on the inner wall of the pressing piece 105.
There is one in which a pair of engaging protrusions 108 and 109 are formed on both sides of 102 to releasably engage (see Fig. 11).
.

However, if 1+1η is established, then switch case 11
0 has a reprinted configuration in which the bullet f1 arms 106 and 107 are not provided protrudingly, and no recess is formed to accommodate the microswitch IO4, so its manufacturing is comparatively difficult. was there.

In addition, the external terminal 111 of the micro switch +04
External end for small size 2ii - 1' ] l 2 Threaded end 1
In order to construct a cylindrical terminal, conventionally, each external terminal had to have a circular 4'1 terminal structure, and a male screw had to be screwed into a female screw formed on the end surface of this cylindrical terminal. , the shape of the switch case 110 required 27 parts, and there was a disadvantage that the amount of gold 111 increased accordingly.
[Object 21 of the Invention] This invention was made to solve the problems of the conventional products described in 1-1 above.It is easy to manufacture a switch case, and the external terminals of the microphone ML switch and the external terminals for the display are arranged in a frame structure. The object of the present invention is to provide an illuminated pushbutton switch that can be applied to both a screw terminal structure and a screw terminal structure. ,
A switch case in a switch unit consists of a switch base and a pair of switch covers mounted on both sides of the switch base, and a microswitch is installed between at least one switch cover and the switch base. At the same time, the external terminal to which the ↑ connection terminal for the display unit on the display unit side is removably connected is connected to -1, the switch number 1! It is fixed to the stand, and the switch base shown in 1- shows the following:
- has a plurality of elastic arms on the tip end thereof, which protrudes from the side of the cutter and is removably engaged with the plurality of engagements j1; 1f
It is characterized in that the pressing piece for removing A is integrally formed.

According to this invention, the switch case is composed of a switch base and a pair of switch covers mounted on both sides of the switch base, and the base has a pair of bullet f1 arms and an engaging ) Since the structure is divided into 33 sections formed between the cover and the 1 protruding and recessed 1 writing table for housing the microswitch, the molding of the base and the cover 1' is easy. Instead, it is extremely easy to store the microswitch in a switch case.

In addition, by configuring the switch case into a three-part structure with the switch base and switch cover, each outer end of the external terminal of the microswitch housed between the switch cover and the switch base can be 1. Fold it into a letter shape and attach the bent piece to the outside of the switch cover described in 1. +> and fixed to the 1-1 switch base and -1, the display on the display unit side? )) Bend the outer ends of the external terminals to which the phase connection terminals are removably connected into a 1 shape, and place the bent pieces along the outer surface of the switch base. If a portion of the screw terminal is provided on the curved piece, it is easy to form the external terminal of the frame structure into a screw terminal structure.

<Explanation of Examples> Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is an exploded perspective view of an example of an illuminated pushbutton switch according to the present invention.

In the figure, the switches are divided into a display unit 1 and a switch unit 2.

3 is a synthetic resin main body case of the display unit 1, which includes a cylindrical body 3a and 11?1 of this body 321.
It consists of a rectangular front frame 3t) with a body formed at the end, and a ridge portion 30 that is screwed into the mounting ring 4 is formed on the outer circumferential surface of the body portion 3a.

531:i: l-Recorded body: washer fitted to 3a, [3 is G, It! Part 1114: Around the square that fits into 1 n]! Place the 11th protrusion (32) around the top of each hole.

70 It is a cylindrical plunger made of synthetic resin, and a pair of operating membranes 7a and 7b are fitted at 41゛, inside the main body case: 3 body: 38, so that it can be axially moved in the lii + rearward direction. Retained. , 70 is a guide river protrusion formed on the outer circumferential surface of the 11 q 11 horn direction on the outer circumferential surface of the 1-r brunge \・7, and a groove 3 d formed on the inner periphery of the l- body part 3a.
(Fig. 73) is fitted. 8 is made of an electrically insulating synthetic resin, and is fitted and fixed in the barrel 3a, and has a notch on its outer circumferential surface that does not hinder the movement of the pair of operating membranes 7a and 7b of the brushage A77. Part 8;), 8 b
is formed. Reference numeral 8c denotes an engaging pawl formed on the outer circumferential surface of the first hem 8, which engages the engaging hole 30 of the trunk 332]. 1- Main body case: 3. Plunger 7
and the body block 9 on the display unit 1 side with the head 8 etc.
It consists of.

Reference numeral 10 denotes a push button fitted to the front frame 3b of the main body case; 3, and a funnel-shaped button main body 1L that also serves as a reflector.
]) of the button body 11; translucent =V coated on the j end
On the inner surface side of the knob 12, light magnifying plates 1-13 and translucent plates 1-14 are accommodated and installed. 15 is the front surface of the pushbutton 1O (
The light-emitting elements r-1, for example, light-emitting diodes 1 and 16, are built-in light-emitting diodes 1 and 15, and are used to illuminate the operation surface).
The push button 10 and the push button 10 constitute an operation block 17. 18 is a rubber ring fitted onto the base 112 of the button body 11. The button body 1 is provided on the outer peripheral surface of the display 16.
A bottle 20 is formed to fit into a guide hole 19 formed in 1. -1) An Ω-shaped connecting piece 21 is protruded from the base +12) of the button body 11, and this connecting piece 2
1 is a connecting bottle 2 formed on the inner peripheral surface of the plunger 7;
2, the operation block 17 and the plunger 7 are connected.

23 is a ring-shaped rubber seal interposed between the body case and the plunger 7 in the display unit 1, and 24 is a fastener (1) for fixing the rubber seal 2 and 3 to the body case and the plunger 7; It's a ring.

Reference numerals 25 and 26 designate a pair of connection terminals for large and small devices that are press-fitted into the heath 8, and the inner ends 25a and 26a of both connection terminals 25.2 (i) are each composed of a conductive f1 leaf spring, and the display A pair of glues 1 to 16 on the 16 side are connected to the terminals 27 and 28 so as to be removable.

Each outer end 25b, 2 (3
1) is l', +! L! It protrudes rearward from the hair 8 (see Fig. 4). It':
/Made terminal insertion holes, S25c, 26c are I
The connection terminals 25.2 (i) are respectively formed in the terminal insertion holes 29, :30, respectively, and the holes +l
This is Megawa Kiriwa Shout 1.

31, :', 2 is a guide protrusion formed on the head 8 to guide the movement of the operating membranes 7a, 7b of the plunger 7, and the elongated holes 3 of the operating legs 7a, 7b described in -.
:3.34 is fitted.

35 is a lock wire bent into a mouth shape, and one end 35 a has a protrusion in the direction 4-1; a small hole 32;
6, and the other end:,'! 5b is a cam portion formed on one operating membrane 71) of the plunger 7;
Reference numeral 1, 38 is a handling spring which is adapted to perform a well-known alternating action by displacing around the shaft 7 (FIG. 10), and its base end 38a is connected to the hole of the protrusion 32 formed in the heath 8. 39, and its tip 381) comes into contact with the inner peripheral surface of the main body case 3, so that One end of 35 ``35 Fl is elastically in contact with this rotary A-'', deviation 1 of 35 (11 peaks is planned, and the alternating mechanism 40 is formed with the rotary 7:35 of I- and the cam part 37). It consists of

41△ is a switch head made of synthetic resin.
(On both sides of the stand 41△ are switch covers 411 (, 4 IC
is attached to form a -C box-shaped switch case 41 (see Fig. 2). That is, this cover 41 has
1- A recess 42 is formed into which the hese 8 is fitted in the state of being coupled with the display unit 1. 43 and 44 are a pair of external terminals for the display, and terminal insertion holes 45. and 44 are formed on the bottom of the writing table 41A. '16 is press-fitted and fixed,
Connection ends 1-8 -p25 and 26 are inserted into the two-film socket portions 43a and 448 on each tip side for connection. 4: 3b and 44b are each external terminal 4 listed in lz.
3. Terminal insertion holes 45.
46 are respectively cut and raised pieces of the stop river.

43c and 44c are -1-signed external terminals 43.44 (7)
These bent pieces 43c and 44c have insertion holes 71 through which the male screws 70 are inserted.
A female thread 7 is formed, into which the male thread 70 is screwed.
2 constitute a screw terminal portion 73.

47 is a microswitch, and the main body 48 of this microswitch 47 is accommodated in a recess 75 formed in the 112 switch cover 8-4113. 7 [3°77.78 is the external terminal of the microswitch 47," - body 4
8 protrudes outward from the bottom surface, each outer end thereof is bent,
These bent pieces 76a.

An insertion hole 100 into which the male screw 79 is inserted is formed in 77 a and 78 a, and a screw terminal portion 81 is constituted by a female screw 80 into which the male screw 79 is screwed. Note that the -1-registered screw end-r portion 73.81 may be constructed by inserting a washer 74 as shown in FIGS. 2 and 3.

The microswitch 47 is housed in a recess 75 formed in the base 41Δ and the cover 4113, and is pressed into the bottle hole 83 of the cover 4]B by the force of pins 82 protruding from both sides of the writing table 41A. By fixing the switch base 41A, the cover 41B and the micro switch 47
The operating rod 50 of the microswitch 47 described in -1- is driven by the operating leg 7a of the plunger 7.

51 is a dummy switch, and this dummy switch 5j
As shown in FIG.
II;:For =] Illu bar 5 (3) supports the operating rod 54 with a spring f1, and its spring load 1rI is set to be the same as that on the microswitch 47 side. It is the seat.

1- The dummy switch 51 includes the base 41A and the cover 4IC
The other of the bins 82 protruding from both sides of the writing table 41Δ is press-fitted into the bin hole 84 of the cover 4IO and fixed, thereby connecting the switch base 41A and the cover. 4IC and the dummy switch 51 are integrated, and the operating rod 54 of the dummy switch 51 is -I.
- It is adapted to be driven by the operating leg 7 [) of the plunger 7.

-j 2. Switch case 4L The switch unit 2 is composed of a micro switch 47, a dummy switch 51, and the like.

Body part 3 of main body case 3 in above Table 7Y unit 1
At the end of a, there are two approximately C-shaped engagement pieces 59.5≦]
are equally spaced in the circumferential direction (Fig. 4 (Δ) iB
)reference). -)- Corresponding to the registered engagement piece 59, the base 41A of the switch case 41 has a J'l' ++ firm 0 extending to the 11;j end position, as shown in FIG. 5 (Δ).
is formed. On the outer surface of the tip of each elastic arm 60,
1iii As shown in FIG. 6, a locking protrusion (51) is formed on the inside of the tie-engaging piece 59 to be releasably engaged, and a ``■''-shaped engagement is provided on the outer surface of the tie-engaging piece 59. 11J'l
' 62 is integrally formed. A) l are placed on both sides of this pusher 1F piece 62, and on the side of the switch case 41,
In FIG. 5(A), a low falling surface 63 is formed as shown in FIG.

In addition, in the figure, 64 is the recess 42 of the L switch case 41.
The wall 65.66 is a hole formed in the recess 42, and the wall 65.66 is a hole formed in the recess 42.
-1- operation rods 50.54 are arranged, and in order to press these operation rods 50.54, a plunger 7 is inserted.
The operating legs 7a and 7b are allowed to enter.

Next, the operation of the above configuration will be explained.

The ON/OI'1 operation of the microswitch 47 by pressing the push button 10 is basically the same as the conventional one.

That is, by pressing the push button 10 marked -1, the plunger 7 pivots, and its operation legs 7a, 7[) cause the microswitch 47 and the dummy switch 51, respectively.
The operating rods 50 and 54 are pushed in, and the microswitch 47 is turned on (01.1.''). On the other hand, at this time, press the operating leg 72) of the plunger 7 to open the mouth.
The other end of the holder A: 35 (351) is engaged with the C cam portion 37 from the small dispenser pushing device indicated by the solid line in FIG. 10 to the pushing release position indicated by the imaginary line.
OF' F ) state.

When the push button 10 is pressed again, the other end of the lock wire 35: 35b leaves the position indicated by - and at the same time moves around the cam portion: 37, so the micro switch 47 turns OFF'F (ON). Therefore, the returning force of the operating rod 50 returns the plunger 7, etc. to its original state (1). That is, each time the push button 10 is pressed, the microswitch 47 is switched between the ON state and the OI'='F state due to the alternate operation of the lock wire 35. .

1. As is clear from the structure 1, the switch case 41
is 3 minutes 7 by base 41A and cover 41F3.41C
f'l (see Figure 1). Therefore,
1. It becomes easy to mold the cover 41△ and the cover 4113.410. In other words, a pair of elastic arms 60 are protruded from the base 4A of the switch case 41 constituting the unit 2. As shown in FIG. As a result, the leather unit 1 and the switch unit 2 are connected.

In addition, by pressing the '-shaped pressing piece 62 formed on the outer surface of the elastic arm roller 0 from the side inward),
The above engagement is released and the connection between the L display unit 1 and the switch unit 2 is released.

In this way, (a pair of elastics is provided on the base 41Δ)'-
0 and an engaging bend 59 are provided protrudingly, and a micro switch 47 is provided.
The recess 75 for storing the dummy switch 51 and the dummy switch 51 is
] A cover 41B formed with A.

41C is constructed separately, it is not only easy to mold the base 41A and the cover 4113.4IC, but also to assemble the switch case 41 by storing the micro switch 47 and the dummy switch 51. It's extremely easy.

- Outer end F76.77.7 of microswitch 47
8 is formed by punching out a flat plate material, and screw terminal portions 81 are formed on bent pieces 76a, 77a, and 78a at each outer end thereof. In this way, the external terminal 76 of the microswitch 47
．． Since 77 and 78 are made of plate material, the external terminal 76 molded on the main body 48 is formed by punching out the plate material and molding the frame with resin in Gold 1-IJ.
．． 77°78 is bent into a 14-figure shape, and each bent piece 76a
, 77 a, and 78 a, by inserting the male screw 79 and the female screw 80 into the insertion holes 90 and connecting them, the microswitch 47 which also includes the screw terminal portion 81 is constructed, and the screw terminal portion 81 is fixed to the outer wall of the cover 4+B.

Furthermore, in the combined state of the display unit 1 and the switch unit 2, the connection terminals 25 and 26 fixed to the base 8 of the old display unit 1 are End-r-43,44
It is inserted into the two membrane-like socket parts 4', 3a, and 44a and connected.

The display external terminals 43 and 44 are also fixed to the base 41A of the switch case 41, and male screws 70 are inserted into the insertion holes 71 formed in the bent pieces 43c and 44c at each outer end.
By inserting and connecting the female screw 72, the screw terminal portion 73
The base 41Δ of the switch case 41 can be easily constructed.

In addition, in the embodiment described in 1-1, one pole is used, that is, a dummy switch 51 with the same operating load is arranged in parallel to one microswitch 47, so that the push button 10 is pressed one-sidedly. Also, the microswitch 47 can be operated properly.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view showing an example of a 116-light type pushbutton switch according to the present invention, Fig. 2 is a partially cut away top view of the same, Fig. 3 is a partially broken side view of the same, Fig. 4 (Δ), (+1) shows the display unit in the same pushbutton switch. Figure 5 (+3) shows the display unit in the same pushbutton switch. A partial cross-sectional view of the connecting part between the display unit and the switch unit in a button switch, Figure 8 is an explanatory diagram of the alternating operation in the pushbutton switch, and Figure 9 shows a conventional illuminated pushbutton switch in combination with the display unit and the switch unit. Figure 10 is a front view showing the switch unit in Figure 9;
FIG. 1 is a sectional view showing a connecting portion between the display unit and the switch unit in FIG. 9. 1... Display unit [..., 2... Switch unit,
3...Main case, 7...Plunge A), 8...
・Base, 16... Display hole, 17... Operation block, 25.26... Connection terminal for large and small devices, 41... Switch case, 41 ≦] 1△... Switch base, 411 (, 4IC...
・Switch cover, 4:3.44...External terminal for display -14: 3c, 44c, 76a, 7
721, 78 a-fJ1 song piece, 47...Micro switch, 51...Dummy switch-159,,
A series combination 1"+, 60... pull r'111 a-11,61
...(System 11-protrusion, 62-piece on push F, 73, 81
...Screw terminal part, 76.77.78...External terminal of micro switch. Patent Applicant: 8゛F Ishidenki Co., Ltd. Interest Agent Attorney: Kunihide Namba (1 other person)

Claims (2)

[Claims] (1) A display unit that has an operation block with a built-in display, and a microcontroller that is turned on and off by pushing the operation block through a plunger that is held in the main body case of this display unit so that it can pivot in the front and back direction. a switch unit having a switch, and the switch unit includes a plurality of elastic arms each having a locking protrusion at its tip that is removably engaged with a plurality of engaging pieces protruding from the display unit side. and a switch base having an engagement release pressing piece integrally formed on the outer surface of the elastic arm;
It consists of a pair of switch covers attached to both sides of the switch base, and a microswitch is housed between at least one switch cover and the switch base, and the display connection terminal on the display unit side is An illuminated pushbutton switch characterized in that an external terminal that can be connected in a detachable manner is fixed to the switch base. (2) Bending each outer end of the external terminal of the microswitch housed between the switch cover and the switch base into an L shape and aligning the bent pieces along the outer surface of the switch cover, The outer end of the external terminal fixed to the switch base and to which the display connection terminal on the display unit side is removably connected is bent into an L-shape and then bent onto the outer surface of the switch base. 2. The illuminated pushbutton switch according to claim 1, wherein the bent pieces of each of the external terminals are provided with screw terminal portions.