JP3727745B2 - Combined operation type switch - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a composite operation type switch that outputs different types of switching signals depending on the operation method.
[0002]
[Prior art]
Conventionally, as disclosed in Japanese Utility Model Laid-Open No. 5-43439, a composite operation type switch in which a rotary switch and a push switch are integrated is known. The composite operation type switch described in the publication has a through hole formed in the center of a wafer which is a component part of a rotary switch, and a push switch is fixed to the inner bottom portion of the through hole, and the push switch is inserted into the through hole. The key top for pressing operation is fitted so as to be movable up and down.
[0003]
In the composite operation type switch configured in this way, when the rotor is rotated in either the forward or reverse direction, a pulse signal is generated by the slider piece built in the rotary switch repeatedly contacting and separating from the pattern, On the other hand, when the key top is pressed down, the movable contact incorporated in the push switch comes into contact with the fixed contact, and an on / off switching signal is generated. Therefore, the user can operate two types of switches, the rotary switch and the push switch, by selecting either the rotor or the key top.
[0004]
[Problems to be solved by the invention]
By the way, in the conventional composite operation type switch described above, since the switch arranged at the center of the rotary switch is a push switch, it is referred to as a pulse signal due to the rotation operation of the rotor and an on / off switching signal due to the key top pressing operation. Only two kinds of signals can be generated, and there is a problem that the application is narrow despite being a composite operation type switch.
[0005]
[Means for Solving the Problems]
According to the present invention, an opening is provided in the center of the rotary switch to make it hollow, and a multi-directional switch that outputs a switching signal by tilting or pushing a stem is disposed in the hollow . According to the composite operation type switch configured in this way, a pulse signal generated by the rotation operation of the rotor, an ON / OFF switching signal generated by the tilting operation of the stem, and an ON / OFF switching signal generated by the push operation of the stem are generated. The range of applications is greatly expanded.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
In the composite operation type switch of the present invention, a rotary switch that sequentially outputs an on / off switching signal by rotating the rotor, and a multi-directional switch that respectively outputs a switching signal by a tilting operation of a stem and a switching signal by a push operation. Provided, an opening is provided in the center of the rotary switch to make it hollow, and the multidirectional switch is arranged in the hollow .
[0007]
The rotary switch and the multi-directional switch may be mechanically connected in advance. However, when the terminals of the rotary switch and the multi-directional switch are soldered to the same printed circuit board land, the printed circuit board passes through the printed circuit board. Thus, the rotary switch and the multidirectional switch can be integrated.
[0008]
In addition, a cap having a conical tapered surface is integrated with the stem, and a circular hole is provided at the center of the rotary knob integrated with the rotor to allow the cap to move. If a conical tapered surface facing the tapered surface of the cap is formed, the gap required between the cap and the rotary knob can be minimized.
[0009]
【Example】
1 is an exploded perspective view of a composite operation type switch, FIG. 2 is a plan view of the composite operation type switch, FIG. 3 is a cross-sectional view of the composite operation type switch, and FIG. FIG. 5 is a plan view of a wafer provided in the rotary switch, FIG. 6 is a bottom view of the rotor provided in the rotary switch as viewed from the wafer side, and FIG. FIG. 8 is an exploded perspective view of the multi-directional switch, FIG. 9 is a plan view of a housing provided for the multi-directional switch, and FIG. 10 is a plan view of the multi-directional switch. FIG. 11 is a cross-sectional view showing a tilting operation, and FIG. 11 is a cross-sectional view showing a push operation of the multidirectional switch.
[0010]
As shown in FIGS. 1 to 3, the composite operation type switch according to the present embodiment includes a rotary switch 1, a rotary knob 2 for rotating the rotary switch 1, and a multi-position switch arranged at the center of the rotary switch 1. The directional switch 3 and a cap 4 that tilts and pushes the multidirectional switch 3 are configured. The rotary switch 1 and the multidirectional switch 3 are mounted on the same printed circuit board 5.
[0011]
First, the rotary switch 1 will be described with reference to FIGS. 4 to 6. The rotary switch 1 includes a synthetic resin wafer 6, a synthetic resin rotor 7 rotatably mounted on the wafer 6, and the wafer 6. It is comprised with the cover 8 made from a metal plate attached to the upper part. As shown in FIG. 5, a circular opening 9 is formed at the center of the wafer 6, and a cylindrical body 10 is erected around the opening 9. An uneven portion 11 for clicking out is formed at the lower portion of the cylindrical body 10, and the uneven portion 11 continuously extends along the peripheral surface of the cylindrical body 10. Further, an outer ring wall 12 is erected on the outer peripheral edge of the wafer 6, and the outer ring wall 12 and the cylindrical body 10 are opposed to each other via a concave groove 13 having a ring shape in plan view. A common pattern 14, an A-phase pattern 15 and a B-phase pattern 16 are disposed on the inner bottom surface of the concave groove 13, and each pattern 14, 15, 16 is led out of the wafer 6 via a terminal 17. These terminals 17 are soldered to lands (not shown) of the printed circuit board 5. A plurality of common patterns 14 are arranged at predetermined intervals on the same track, and the A-phase pattern 15 and the B-phase pattern 16 are arranged on the same track outside the common pattern 14 over a range of about 180 degrees. ing.
[0012]
The rotor 7 includes a cylindrical shaft portion 18 and a ring-shaped holding portion 19 that protrudes radially outward from the lower end of the shaft portion 18, and the inner peripheral surface of the shaft portion 18 is an upper portion of the cylindrical body 10. By being guided by the peripheral surface, it is rotatably connected to the wafer 6. As shown in FIG. 6, a pair of locking protrusions 19a and a pair of guide protrusions 19b are formed on the lower surface of the holding part 19, and both ends of the click spring 20 having a protrusion 20a at the center are these locking protrusions. It is locked to 19a. The click spring 20 is formed by forming a wire spring, and the protrusion 20a is elastically in contact with the concavo-convex portion 11 in a state where the position of the protrusion 20a is regulated by both guide protrusions 19b. In addition, a pair of sliders 21 and 22 are caulked and fixed to the lower surface of the holding portion 19, and these sliders 21 and 22 are at an opposing position of 180 degrees through the opening 9. One slider 21 has arm portions extending in opposite directions from the central caulking portion, and contacts 21a and 21b are formed at the tips of the respective arm portions. The other slider 22 is configured in the same manner, and contacts 22a and 22b are formed at the tips of the arms extending in opposite directions. These contacts 21a, 21b, 22a, and 22b are in elastic contact with the inner bottom surface of the concave groove 13 of the wafer 6, but the contacts 21a and 22a of the sliders 21 and 22 have the common pattern 14 as shown in FIG. The contacts 21b and 22b of the sliders 21 and 22 are elastically contacted on the track on which the A-phase pattern 15 and the B-phase pattern 16 are arranged.
[0013]
A pair of locking grooves 18a are formed at positions facing the outer peripheral surface of the shaft portion 18 at 180 degrees, and a pair of positioning grooves 18b are formed at positions facing the top end of the shaft section 18 at 180 degrees. . As shown in FIG. 3, the rotary knob 2 is formed with a pair of snap claws 2a and a pair of engaging projections (not shown), and these snap claws 2a are locked in the locking grooves 18a. At the same time, the rotary knob 2 is integrated with the shaft portion 18 of the rotor 7 by fitting the engaging protrusion into the locking groove 18a. A circular hole 23 is formed in the center of the top surface of the rotary knob 2, and a conical tapered surface 23 a is formed on the inner peripheral edge of the circular hole 23.
[0014]
The cover 8 is fixed to the upper surface of the outer ring wall 12 of the wafer 6 using heat caulking or bonding, and the cover 8 covers the upper end of the groove 13. The holding part 19 of the rotor 7 is in sliding contact with the lower surface of the cover 8, and the cover 7 prevents the rotor 7 from coming off.
[0015]
Next, the multidirectional switch 3 will be described with reference to FIGS. 7 to 9. The multidirectional switch 3 includes a synthetic resin housing 24, one central tact spring 25 disposed inside the housing 24, and a central tact spring 25. Four peripheral tact springs 26, a first stem 27 that selectively drives each peripheral tact spring 26, a second stem 28 that drives the central tact spring 25, and a metal deposited on the top of the housing 24 It is comprised with the lid 29 made from a plate.
[0016]
As shown in FIG. 9, the inner bottom portion of the housing 24 is positioned at four positions, a circular center fixed contact 30, a common contact 31 surrounding the center fixed contact 30, and front, rear, left and right around the common contact 31. The peripheral fixed contact 32 is exposed, and the central fixed contact 30, the common contact 31, and each peripheral fixed contact 32 are led out from both sides of the housing 24 as terminals 33, and each terminal 33 is connected to the printed circuit board 5. Soldered to a land (not shown) (see FIG. 3). In addition, four protrusions 24a are erected on the inner bottom portion of the housing 24 so as to surround the central fixed contact 30, and positioning portions 24b and bosses 24c are respectively provided at the four corners of the housing 24 facing the protrusions 24a. Is formed.
[0017]
The central tact spring 25 and the peripheral tact spring 26 are made of an elastic material such as phosphor bronze or SUS as a base material, and the surface thereof is subjected to Ag treatment. The central tact spring 25 is formed in a circular dome shape as a whole, and this central tact spring 25 is placed on the common contact 31 around the central fixed contact 30 and positioned by the inside of each protrusion 24a. ing. On the other hand, the peripheral tact spring 26 is formed into a rectangular shape as a whole, and a double-supported bulging portion 26a is integrally formed at the center thereof. The peripheral tact spring 26 is placed on the common contact 31 on the inner side of each peripheral fixed contact 32, and is positioned between the inner wall of the housing 24 and the outside of each protrusion 24a.
[0018]
The first stem 27 has a cylindrical portion 27a and a skirt portion 27b extending obliquely downward from the cylindrical portion 27a, and four projecting portions 27c are maintained at an equal interval of about 90 degrees on the lower surface of the skirt portion 27b. The protrusions 27 c are in contact with the bulging portions 26 a of the peripheral tact springs 26. A guide hole 34 penetrating in the vertical direction is provided in the center of the cylindrical portion 27a, and four projecting pieces 27d are integrally formed on the lower peripheral edge of the skirt portion 27b, and these projecting pieces 27d are adjacent to each other. The two projecting portions 27 c extending outward from the middle are engaged with the aforementioned positioning portion 24 b of the housing 24. The first stem 27 is supported so as to be swingable with respect to the housing 24 by placing the protrusions 27c on the corresponding peripheral tact springs 26. Since it is inserted into the corresponding positioning part 24b, the positioning at the time of assembly is easy and the rotation after assembly is also prevented.
[0019]
The second stem 28 has a flange portion 28a at the lower end, and the lower surface of the flange portion 28a faces the upper surface of each protrusion 24a of the housing 24 with a predetermined distance. The second stem 28 is inserted from below in the guide hole 34 and protrudes upward from the first stem 27, and is prevented from coming off by a flange portion 28 a, and the cap 4 is attached to the tip of the second stem 28. It is mated. The cap 4 is exposed in the circular hole 23 of the rotary knob 2, and the conical taper surface 4a formed on the cap 4 is opposed to the taper surface 23a of the rotary knob 2 at a predetermined interval. Yes. A pressing projection 28 b is integrally formed at the center of the lower surface of the second stem 28, and the lower end of the pressing projection 28 b is in contact with the central tact spring 25.
[0020]
The lid 29 has a circular central hole 29a at the center and mounting holes 29b at the four corners, and a taper extending downward is formed at the periphery of the central hole 29a. The lid 29 is attached to the upper opening end of the housing 24 by caulking the bosses 24c inserted through the mounting holes 29b in a state where the skirt portion 27b of the first stem 27 is passed through the central hole 29a. Has been.
[0021]
In the composite operation type switch configured as described above, the rotary switch 1 is operated when the user rotates the rotary knob 2, and the multidirectional switch 3 is operated by tilting or pushing the cap 4. . For example, when the rotary knob 2 is rotated in either the forward or reverse direction, the shaft portion 18 of the rotor 7 rotates with the cylindrical body 10 of the wafer 6 as a guide surface in conjunction with the knob 2, and is integrated with the shaft portion 18. Since the holding part 19 rotates in the same direction in the concave groove 13, the contacts 21 a, 21 b, 22 a, 22 b of both sliders 21, 22 fixed to the lower surface of the holding part 19 are the inner bottom surfaces of the concave groove 13. Slide on the top. Here, since both the sliders 21 and 22 are at the opposing positions of 180 degrees, when the contact 21 b of the slider 21 slides on the A phase pattern 15, the contact 22 b of the slider 22 becomes the B phase pattern 16. On the contrary, when the contact 21 b of the slider 21 slides on the B phase pattern 16, the contact 22 b of the slider 22 slides on the A phase pattern 15. Therefore, for example, when one contact 21b of the slider 21 slides on the A-phase pattern 15 and the other contact 21a repeatedly contacts and separates from the common pattern 14, a pulse waveform for the A-phase signal is output. At this time, one contact point 22b of the slider 22 slides on the B-phase pattern 16, and the other contact point 22a repeatedly contacts and separates from the common pattern 14, thereby outputting a pulse waveform for the B-phase signal. The Then, the rotation direction of the rotor 7 is detected by determining the rising pulse of the A-phase signal and the B-phase signal, and the rotation amount of the rotor 7 is detected by counting the number of pulses.
[0022]
When the rotor 7 rotates as described above, the protrusion 20a of the click spring 20 held on the lower surface of the holding portion 19 repeatedly engages and disengages with the concavo-convex portion 11 formed on the lower portion of the cylindrical body 10, and a click feeling is caused at that time. Is born. Since the number of the concavo-convex portions 11 corresponds to the number of the common patterns 14, a click feeling is generated every time the contacts 21 a and 22 a repeat contact and separation with the common pattern 14. It is transmitted to the user. Since the protrusion 20a is prevented from moving in the circumferential direction (lateral movement) by the two guide protrusions 19b, the protrusion 20a is smoothly engaged and disengaged with the concavo-convex portion 11 to realize a reliable click operation.
[0023]
On the other hand, when the user tilts the cap 4 exposed in the circular hole 23 of the rotary knob 2 in any one of the four directions of front, rear, left and right where the peripheral fixed contacts 32 are arranged, as shown in FIG. In addition, the second stem 28 tilts in the same direction in conjunction with the cap 4, and the first stem 27 also tilts in the same direction by the second stem 28. As a result, the projecting portion 27c positioned in the tilting direction presses the peripheral tact spring 26 positioned therebelow, and when the peripheral tact spring 26 is reversed to generate a click feeling, the peripheral tact spring 26 is interposed via the peripheral tact spring 26. Since the peripheral fixed contact 32 and the common contact 31 located therebelow are conducted, a switch-on state is obtained. The tilt angle at this time is regulated by the flange portion 28a of the second stem 28 coming into contact with the protrusion 24a of the housing 24, and the second stem 28 is adjusted when the lower surface of the flange portion 28a comes into contact with the protrusion 24a. Since it does not tilt as described above, it is possible to reliably prevent the central tact spring 25 from reversing and contacting the central fixed contact 30 by mistake. Further, when the second stem 28 is tilted toward the middle of the two adjacent peripheral fixed contacts 32, the two projecting portions 27c positioned in the tilting direction press the peripheral tact springs 26 positioned therebelow. The peripheral fixed contact 32 and the common contact 31 located below are electrically connected to each other via the peripheral tact spring 26, and a switch-on state is obtained. When the pressing force in the tilting direction with respect to the second stem 28 is removed, the first stem 27 returns to the original position by the self-returning force of the inverted peripheral tact spring 26, and the second stem 28 is moved together with the second stem 28. Since the stem 28 also returns to the original position, it returns to the switch-off state shown in FIG. In that case, since the taper is formed in the periphery of the center hole 29a of the cover body 29, the 1st stem 27 can return smoothly.
[0024]
When the user pushes the cap 4 directly below, as shown in FIG. 11, the second stem 28 descends along the guide hole 34 of the first stem 27, and the pressing projection 28b is positioned below the second stem 28. The central tact spring 25 is pressed. When the central tact spring 25 is reversed and a click feeling is generated, the central fixed contact 30 and the common contact 31 located below the central tact spring 25 are electrically connected to each other. can get. In this case, the first stem 27 is supported in a neutral state by the four peripheral tact springs 26 and functions as a guide member that guides the pressing (pushing) operation of the second stem 28. When the pressing force directly below the second stem 28 is removed, the second stem 28 and the cap 4 are returned to their original positions by the self-returning force of the inverted central tact spring 25, and the switch-off state shown in FIG. Return.
[0025]
As described above, the composite operation type switch according to the present embodiment can not only generate a continuous pulse signal from the rotary switch 1 by rotating the rotary knob 2, but also select the tilting direction of the cap 4. Thus, the four types of on / off switching signals for conducting the desired one peripheral tact spring 26 from the multi-directional switch 3 to the peripheral fixed contact 32 and the desired two adjacent peripheral tact springs 26 to the peripheral fixed contact 32 are connected. A total of 8 types of on / off switching signals can be generated, and the on / off switching signal can be generated from the multidirectional switch 3 by pushing the cap 4. Can do. For this reason, the use of the composite operation type switch is remarkably expanded. For example, when the composite operation type switch according to the present embodiment is applied to an audio device, the various operations of the menu displayed on the display unit such as the LCD by tilting the cap 4 After selecting one of the menus, the selected menu can be determined by pushing the cap 4, and the volume and sound quality of the determined menu can be adjusted by rotating the rotary knob 2.
[0026]
【The invention's effect】
The present invention is implemented in the form as described above, and has the following effects.
[0027]
A rotary switch that sequentially outputs an on / off switching signal by rotating the rotor, and a multi-directional switch that outputs a switching signal by tilting the stem and a switching signal by pushing, respectively. an opening provided in a hollow, placing the multidirectional switch in this hollow, integrated cap having a conical tapered surface in said stem, said cap in the center of the rotary knob which is integrated with the rotor When a circular hole that allows movement is provided and a conical tapered surface opposite to the tapered surface of the cap is formed on the inner peripheral edge of the circular hole, a pulse signal generated by the rotation operation of the rotor and an ON operation performed by the tilting operation of the stem are performed. / Off switching signal and on / off switching signal by stem push operation are generated respectively. Bets can be, Ri application range Hiroga greatly also the clearance required between knob rotation cap can be minimized.
[0028]
Further, when the terminals of the rotary switch and the multidirectional switch are soldered to the same printed circuit board land, the rotary switch and the multidirectional switch can be integrated via the printed circuit board.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view of a composite operation type switch according to an embodiment of the present invention.
FIG. 2 is a plan view of the composite operation type switch.
FIG. 3 is a cross-sectional view of the composite operation type switch.
FIG. 4 is a cross-sectional view of a rotary switch provided in the composite operation type switch.
FIG. 5 is a plan view of a wafer provided in the rotary switch.
FIG. 6 is a bottom view of a rotor provided in the rotary switch as viewed from the wafer side.
FIG. 7 is a cross-sectional view of a multidirectional switch provided in the composite operation type switch.
FIG. 8 is an exploded perspective view of the multidirectional switch.
FIG. 9 is a plan view of a housing provided in the multidirectional switch.
FIG. 10 is a sectional view showing a tilting operation of the multidirectional switch.
FIG. 11 is a cross-sectional view showing a push operation of the multidirectional switch.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Rotary switch 2 Rotary knob 3 Multidirectional switch 4 Cap 4a Tapered surface 5 Printed circuit board 6 Wafer 7 Rotor 9 Opening 14 Common pattern 15 A phase pattern 16 B phase pattern 17 Terminal 18 Shaft part 20 Click springs 21, 22 Slider 23 Circular hole 23a Tapered surface 24 Housing 25 Central tact spring 26 Peripheral tact spring 27 First stem 28 Second stem 30 Central fixed contact 31 Common contact 32 Peripheral fixed contact 33 Terminal 34 Guide hole

Claims (2)

A rotary switch that sequentially outputs an on / off switching signal by rotating the rotor, and a multidirectional switch that outputs a switching signal by tilting the stem and a switching signal by pushing, respectively.
An opening is provided in the center of the rotary switch to make it hollow, and the multidirectional switch is arranged in the hollow ,
A cap having a conical tapered surface is integrated with the stem, and a circular hole allowing movement of the cap is provided at the center of a rotary knob integrated with the rotor. A compound operation type switch characterized in that a conical tapered surface facing the tapered surface is formed .   2. The composite operation type switch according to claim 1, wherein terminals of the rotary switch and the multidirectional switch are soldered to a land of the same printed circuit board.

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