JPS60205919A - Illuminating pushbutton switch - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention]

(A) Field of the Invention The present invention relates to an illuminated push button switch used as a lighting display switch for various electronic devices such as audio equipment. This invention relates to an illuminated push button switch with an alternate function that locks and unlocks the switch by operating the second floor entrance. (0) Back loading of the invention The above-mentioned illuminated push button switch alternate mechanism,
In the case of a cam and a cam corresponding part that locks the cam by rotating it by a predetermined angle, the above-mentioned cam corresponding part corresponds to the rotation direction of the cam, the predetermined rotation angle of the cam, and the rotation lock position of the cam.) Jmu support is required. When the above-mentioned cams and cam corresponding parts are formed in a housing, for example, one of them is formed as a switch unit and the other is formed as a push-down operation member, the relative positional relationship of these cams is If the switch is misaligned, the switch will not be locked properly. In particular, in the case of a cylindrical switch, the members tend to rotate relative to each other in the circumferential direction, making it difficult to assemble accurately and regulate the position. (c) Purpose of the invention This invention is a method that is

[The above-mentioned cam can be rotated reliably to securely lock the switch, even if it is a cylindrical switch.
The purpose of the present invention is to provide an illuminated pushbutton switch that allows for accurate assembly and position regulation. (D) Summary of the Invention This invention provides vertical movement of the operation unit between the side surface of the cylindrical operation unit that operates the switch ON/OFF in conjunction with the pressing operation of the illumination unit and the switch unit facing the same. A rotation preventing means is provided to restrict mutual rotation in the circumferential direction in a permissible state, and one of the opposing units has cam grooves formed in the upper and lower surfaces of a rectangular shape that is rotatably supported in the rotational direction. The other unit has a first cam corresponding part that contacts the upper end of the cam and regulates the direction of rotation of the cam when the operating units 1 to 1 start to move downward, and the operating unit has a cam formed along the cam. a second cam corresponding part that rotates the cam by a predetermined angle when the cam reaches the pressed position; and a third cam corresponding part that locks the suppressed state of the operating unit in correspondence with the cam groove on the lower surface at the position where the cam is rotated. The switch is characterized by being an illuminated push button switch with an opening window. (e) Effects of the Invention According to the present invention, an alternate mechanism is formed by a cam that is allowed to rotate and a window provided with first to third cam corresponding parts that rotate and lock the cam, and these Since one is placed in the fixed side switch unit and the other is placed in the movable side operation unit 1~ and housed in the housing, there is no misalignment between the cam and the cam corresponding part, and the relationship with dimensional intersection with other parts is eliminated. The pressed state of the operation unit can be reliably locked and released without being affected by the operation unit. Further, since the switch is cylindrical, the rotation preventing means can prevent the alternate mechanism from shifting in the circumferential direction. Therefore, positioning during assembly is easy, and since the cam and the cam corresponding part correspond to high-precision mating, stable alternate operation can be obtained. (f) Embodiment of the Invention An embodiment of the invention will be described in detail below with reference to the drawings. The drawing shows an illuminated pushbutton switch, and as shown in FIGS. 1 to 3, the illuminated pushbutton switch 1 is roughly divided into an illumination unit 2, an operation unit 3, a switch unit 4, and houses these units. It is composed of a housing 5 for holding. The above-mentioned illumination unit 2 is provided as an illumination body that also serves as a push button part, and is housed in a box-shaped color cap 6 that is colored in any color such as red, yellow, or green and has an open bottom surface.
An engraving plate 7 and a diffuser plate (reflection plate) 8 are installed inside and fitted onto the upper surface of the reflective plunger 9 corresponding to the lower side. The color cap 6 has a rectangular open surface corresponding to the open lower surface of the collar cap 6, and the collar cap 6 and the convex portion 11 are engaged in a locking recess 10 carved in a part of the outer periphery of the rectangular open surface. Correspondingly, they are fitted together. A trumpet-shaped reflective surface 12 whose circumferential surface is converged downward from the top surface of the temple into a pyramidal shape guides the light upward.
It has a cylindrical holding part 14 in the center of its lower part that holds a light emitting element 13 such as a lamp or a light emitting diode,
This cylindrical holding part 14 has openings on both sides along the pressing direction for the length of the pressing stroke! A hanging piece 16 having ζ elongated holes 15 is provided vertically, and upper projections 17 protruding from both side surfaces of the light emitting element 13 are respectively engaged with these elongated holes 15 . As a result, the light emitting element 13 is mounted with the upper light emitting portion facing the upper surface of the reflective plunger 9 and the lower light emitting element external terminal 18 exposed below the reflective plunger 9. Further, IC upper protrusions 19 are provided protruding from both sides of the light emitting element 13.
(Later) The light emitting element 13 is fixed by being locked to the locking claw 21 of the light emitting element water holder 20 so as not to come off. As a result, the reflective plunger 9 is allowed to perform a depressing operation of the depressing stroke length G independently of the light emitting element 13. Furthermore, the reflective plunger 9 is detachably attached to the upper open surface 22 of the housing 5, and is guided in sliding contact with the inner surface of the housing 5 to obtain a stable pressing operation. If the light emitting element 13 is pulled out from the upper open surface, the upper protrusion 19 will be removed at the same time and the light emitting element 13 will be pulled out.
can be easily replaced. The above-mentioned engraved plate 7 has required letters or numbers printed on its surface, and the diffuser plate 8 uniformly disperses and reflects the light from the light emitting element 13, and is completely sealed to the reflection plunger ν9 by ultrasonic welding or the like. Can be installed. Below the above-mentioned illumination unit 2, the operating unit 3 is installed inside the housing 5 via an auxiliary seal ring 23 and a seal ring 24. Note that the seal ring 24 is arranged to seal between the inner surface of the housing 5 and the inner surface of the cylindrical holding portion 14 with enough margin to follow the downward movement of the reflective plunger 9 and seal the space. The above-mentioned operating unit 3 is composed of an operating plunger 25 and a spring 26 that biases it upward, and the operating plunger 1225 is a stepped cylindrical body having a small diameter portion on the upper side and a large diameter portion on the lower side. The engagement pawl 28 of the reflective plunger 9 corresponds to a protrusion 27 which is formed and protrudes from the inner circumferential surface of the small diameter portion, so that both plunger arms 9.degree. 25 are integrally connected. The upper end of a coiled spring 26 is fixed to the inner circumferential surface of the large diameter portion, and the lower end is attached to a light emitting element holder 2, which will be described later.
Locked on 0. And this spring 26 i→
The operating plunger 25 is in the upward movement position due to the force, and the outer circumferential step 29 of the operating plunger 1225 is locked to the inner circumferential step 30 of the housing 5 to prevent it from coming off. Furthermore, a vertical hole 32 is provided on the large diameter portion to the right of a long hole 31 which is opened for the length of the pressing stroke along the pressing direction.
This elongated hole 31 engages with a locking protrusion 34 of a switch cover 33, which will be described later, so that the downward stroke of the operation plunger 725 is restricted. Further, a pair of operation pieces 35 are vertically provided on the large diameter portion for turning the switch ON and OFF at the lower end in the push-down operation 11.1. Further, the operating plunger 25 is provided with an opening window 36 opening in an inverted shape on the circumferential surface of the large diameter portion thereof, and a cam 37 which will be described later is freely guided by this window 36 to the depressed position of the operating plunger 25. A so-called A-mutaney 1-machine M43B is formed in which the press and release positions are regulated. This A alternating mechanism 38 is composed of a relatively large opening window 36 and a small piece of cam 37 disposed inside this opening window 36. This notch recess 39 is roughly cut out.
A first upper corner 40 having one corner in contact with the upper surface formed into an arc shape, and a second upper corner 41 having a slightly higher corner at the other corner, furthermore, the first upper corner 40 Each corner 40° 41 with the intermediate corner 42 of the lower L-shaped intermediate portion facing
．． 42 restricts the rotation of the above-mentioned cam 37. The above-mentioned cam 37 has a rectangular shape, and a V-shaped cam W443 is installed at the center part of both side sides for engagement with the above-mentioned corner part, and the inner surface of the center part of the cam 37 has a switch to be described later. It is freely rotatably supported by the rotating protrusion on the base. Next, the operating state of the A alternating mechanism 38- will be explained with reference to FIGS.
As shown in FIG. The aperture window 36 moves downward as shown in Figs. 4 (b) to (c).
As shown in FIG. 1, the upper surface corner portion 40 in FIG.
Cam:! l 43 is locked and the operating plunger 2
The downward movement of 5 is regulated. Then, when the push-down blade is released and covered, as shown in FIGS. The pressed state of the operation plunger 1725 is locked in response to the locking. Then, when the pressing operation J is performed again, as shown in FIG.
The cam 37 is brought into contact with the upper surface of the cam 37, and the cam 37 is tilted.
As shown in FIG. 2, when the cam 37 is in the horizontal position, the operating plunger l-25 is restricted from being pressed down. Next, when the push-down blade is released, the intermediate corner 42 returns (downward movement) as shown in FIG.
It returns to its original state again, not shown in FIG. 4(a). The above-mentioned switch unit 4 includes a light emitting element holder 20,
The light emitting element holder 20 is composed of a switch cover 33 and a switch base 44. The light emitting element holder 20 has an insertion hole 45 in the center of the upper surface into which the external terminal 18 of the light emitting element is inserted, and locking claws 21 are protruded from the upper surfaces on both sides thereof. Then, the above-mentioned upper projection 19 of the light emitting element is locked with a certain holding force to prevent it from coming off. The lower end of the spring 26 is held against the upper surface of the holder 20, and 46. /17 is a guide protrusion between the light emitting element and the spring. Furthermore, a pair of support protrusions 4 are provided on both sides of the holder 20 in the radial direction.
These support protrusions 20 are supported by a switch cover 33, which will be described later. The switch cover 33 described above accommodates and supports the support protrusion 48 of the holder 20 described above in a support groove 49 formed in the radial direction of the upper surface, and inner ends of the light emitting terminals 13 are provided on both sides of the support groove 49. A contact terminal 51 in the shape of a leaf spring is connected to the inner end of the light emitting terminal 50.
is the light emitting element external terminal 18 inside the switch cover 33.
It is arranged in the insertion space 52 into which the holder is inserted so that it can be contacted. A locking protrusion 34 that engages with the elongated hole 31 of the operating plunger 25 is formed on the outer circumferential surface, and a locking protrusion 34 is provided on the opposite outer circumferential surface to support a cam as the alternator 1 structure. A protrusion 53 is provided protrudingly. Note that 54 is a lower engagement protrusion for integrally connecting to a switch base, which will be described later. The above-mentioned switch base 44 is integrally connected by fitting the lower engagement protrusions 54 of the above-mentioned switch cover into the openings 55 on both sides of the switch base. A pair of left and right switch mechanisms 56 of the new two-circuit layer type are mounted on the nl plane of the upper surface. As shown in FIG. 5, this switch i structure 56 includes a first upper terminal 58 and a first lower terminal 59, which are provided with contact members 57 facing each other in the upper and lower directions. A second upper terminal 60 and a second lower terminal 61 are disposed opposite to each other on the switch base 44, and a wide first movable piece 62 is disposed between these upper and lower opposing surfaces and is in common contact with each other in the horizontal direction. The first movable piece 62 is provided with a contact member 63 that comes into contact with each of the upper and lower terminals of both sides.
The movable piece 62 has one end locked in a notch 65 of a planting piece 64 planted on the switch base 44, and an engagement protrusion 66 formed on the other end. The second movable piece 67 is engaged with the mating hole 68 and the other end of the second movable piece 67 is locked with the lower end of the above-mentioned operating piece 35. An upright piece 69 is provided ( ), and this upright piece 69 engages with a vertical groove 70 at the lower end of the operation piece to restrict upward movement. Then, by locking one end of the coil spring 71 to this upright piece 69 and locking the other end to the upper part of the planting piece 64 to apply a tensile action to the coil spring 71, the first movable piece 62 is moved to the notch portion. The second movable piece 67 uses the lower end of the operation piece 35 as a fulcrum to urge the other side downward in an inclined state, and normally the first movable piece 62 1. OF in contact with second lower terminal 59.61
It is in F state. Then, as the operation piece 35 is pressed down, the upper side of the second movable piece 67 which is in the tilted state is moved downward, and this second movable piece 67
When it exceeds the linear state with the first movable piece 62, the connecting portions of both the rotary pieces 62 and 67 move to switch to the ON operation. The switch mechanism 56 is set to the ON state when the operation plunger +725 is pressed down and locked by the Δ ruternate mechanism 38, and the switch mechanism 56 is set to the OFF state when the operation 1 plunger 25 returns. And, such a switch mechanism is a switch base 44.
It is similarly arranged on the same plane on the opposite side, and is provided for ON/O [F operation] using the operation piece on the other side. Note that the aforementioned operation unit 3 and switch unit 4 are inserted and attached through the lower openings of the housing 5, respectively. Reference numeral 72 indicates a fastening nut for wall mounting which is screwed onto the outer peripheral surface of the housing, and reference numeral 73 indicates a seat thereof. In the illuminated push button switch configured as described above, when the surface of the color cap 6 of the illumination unit 2 is pressed down with a finger, the operation piece 35 of the operation plunger 25 moves down together with the reflective plunger 9 in response to the pressing horn. The contact side of the first movable piece 62 is thereby moved upward by the tensile force of the coil spring 71. As a result, the first and second upper terminals 58 and 60 are electrically connected through the first movable piece 12 and turned on. In response to such a press input signal, the light emitting element 13 emits light and is illuminated. In addition, the J signal is input to a predetermined device set in advance and used as appropriate. Note that this ON state is locked by the alternate machine 1+"l 38, and it will remain ON until this lock is released and reversed.
The state is maintained. Then, by pressing down the illumination unit 2 again, the lock of the alternate mechanism 38 is released, whereby the illumination unit 2 is returned to its original position, and the switch mechanism 38 is also returned to its original position and switched to the OFF state. In the structure of this invention, the rotation preventing means d31 corresponds to the long hole 31 of the operation plunger and the locking protrusion 34 of the switch cover, the first cam corresponding part corresponds to the first ground corner part 40, The second cam corresponding portion corresponds to the second upper surface corner portion 41, and the third cam corresponding portion corresponds to the second upper surface corner portion 41.
The cam corresponding portion corresponds to the intermediate corner portion 42 .

[Brief explanation of the drawing]

The drawings show an embodiment of the invention, and FIG. 1 is an exploded perspective view of an illuminated pushbutton switch. Figure 2 is its side view. Figure 3 is a longitudinal cross-sectional view. FIG. 4 is an explanatory diagram of the operation of the A alternator 1N control 211' when the switch is pressed. FIG. 5 is a perspective view of the main part of the switch mechanism. 1...Illuminated push button switch 2...Illumination unit 3...Operation unit] -4...
・Switch units 1 to 5... Housing 31... Long hole 34... Locking protrusion 36... Frontage window 37...
-Cam 38...Alternate mechanism 40...First top corner part 41...Second top corner part 42
...Intermediate corner part 43...JIX groove Fig. 2 1 Fig. 3. / Figure 74 (A) (B) (E) (F) (C) (S-) (G) (+)

Claims (1)

[Claims] 1. Each independent switch of the switch unit 1m4FJ is synchronously turned ON/or-t via a cylindrical operation unit that is linked to the pressing operation of the illumination unit: Illumination push button to be operated The switch includes a rotation preventing means for restricting rotation in the circumferential direction of each other while allowing vertical movement of the operation unit between a side surface of the operation unit and a switch unit opposing thereto, and a rotatable shaft support. A cam with cam grooves formed along the rotational direction on the upper and lower surfaces of a rectangular shape, and a cam housed in a housing facing the cam, and when the operation unit starts to move downward, the cam touches the upper end of the cam and guides the rotational direction of the cam. A first cam corresponding part that regulates the cam, a second cam corresponding part that rotates the cam by a predetermined angle when the operating unit reaches the cam suppression position, and a cam corresponding part that corresponds to the cam groove on the lower surface at the position where the cam rotates. ] and a third cam corresponding part that locks the suppressed state, and the downward movement of the operating unit avoids rotation of this cam by a predetermined angle and locks the operating unit in the suppressed state,
Furthermore, it is equipped with an opening window that rotates the cam by a predetermined angle by suppressing the operation unit to release the lock to the operation unit 1,
one of the cam and the opening window toward the switch unit,
An illuminated push button switch with the other side formed on the operation unit side.