JP2003092044A - Rotating type pulse switch - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rotating type pulse switch that is suitable for small sizing and easy to manufacture. SOLUTION: The switch comprises a first substrate 11 that has A-phase contact pattern 10a and B-phase contact pattern 10b on one side, a second substrate 12 that has a common electrode pattern 13 on the side opposed to the first substrate 11, and a movable unit 9 that holds a moving contact 15 on a drive axle 14 in free rotation. The moving contact 15 is clipped between the first substrate 11 and the second substrate 12, and protrusions 16a, 16b that are provided in the vicinity of the fitting part 16 of the moving contact 15 are constantly contacted to the common electrode pattern 13, and the contact parts 17a, 18a provided at a pair of arm parts 17, 18 of the moving contact 15 are contacted sliding to the first substrate 11. Thereby, the contact parts 17a, 18a contact and separate from each contact pattern 10a, 10b in accordance with the rotation of the drive axle 14, and a rectangular wave is outputted.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary pulse switch that outputs rectangular waves of A-phase and B-phase signals with a predetermined phase difference as the drive shaft rotates, and is particularly suitable for miniaturization. The present invention relates to a rotary pulse switch.

[0002]

2. Description of the Related Art A rotary pulse switch of this type has hitherto been provided with an A-phase contact pattern and a B-phase contact pattern on one surface (pattern surface).
A substrate provided with the phase contact pattern and the common electrode pattern, and a slider receiver holding a slider slidingly contacting the pattern surface are provided, and one of the substrate and the slider receiver is provided with respect to the other. It has been generally configured to be rotatably supported. For example, the A-phase contact pattern, the B-phase contact pattern, and the common electrode pattern are arranged with a predetermined gap on the substantially same circumference of the pattern surface of the substrate by insert molding or the like, and are movable with respect to this substrate. A rotary pulse switch has been proposed in which a body is rotatably assembled and a slider held by the movable body is brought into sliding contact with a pattern surface of a substrate.

In the rotary type pulse switch having the above-mentioned structure, the movable body is rotated to
Since a plurality of contact portions provided on the slider contact and separate from each contact pattern, and any contact portion is always contacted with the common electrode pattern regardless of the rotational position of the movable body, When an electric signal is measured between the terminal derived from each contact pattern and the terminal derived from the common electrode pattern, a rectangular wave of the A phase signal and a rectangular wave of the B phase signal are output with a predetermined phase difference, It is possible to detect the rotation angle (rotation amount) and the rotation direction.

[0004]

In the conventional rotary pulse switch described above, the A-phase contact pattern, the B-phase contact pattern and the common electrode pattern are provided on one surface (pattern surface) of the substrate. There is a problem in that it is difficult to achieve a desired miniaturization because it is inevitable to increase the diameter of the pattern surface when arranging types of patterns on substantially the same circumference. Further, in order to accurately set the phase difference between the A-phase signal and the B-phase signal, the relative positional relationship between the three types of patterns on the same surface must be defined with high accuracy, and therefore each pattern made of a metal plate There is also a problem in that workability is poor because complicated alignment is required when the is integrated with the substrate by insert molding. If the contact patterns and the common electrode pattern are arranged concentrically on one surface of the substrate, the pattern surface will be remarkably large in diameter, which is not suitable for downsizing.

The present invention has been made in view of such circumstances of the prior art, and an object thereof is to provide a rotary pulse switch suitable for miniaturization and easy to manufacture.

[0006]

In order to achieve the above-mentioned object, in the rotary pulse switch of the present invention, a first substrate having an A-phase contact pattern and a B-phase contact pattern and a common electrode pattern are provided. A second substrate, and a movable body that holds a slider on a rotatable drive shaft.
The slider is sandwiched between the substrate and the second substrate, and the slider is always brought into contact with the common electrode pattern, and the contact portion provided on the slider is provided with the phase A and the phase B. The contact pattern is slidably attached to and detached from the contact pattern.

In the rotary pulse switch thus constructed, the A-phase and B-phase contact patterns and the common electrode pattern are provided on different substrates and face each other, so that the pattern surface of each substrate can be made small in diameter. This facilitates miniaturization of the entire switch. Further, it is not necessary to align the A-phase and B-phase contact patterns and the common electrode pattern in the same plane, and only the relative positional relationship between the A-phase contact pattern and the B-phase contact pattern needs to be considered. The forming work becomes easy.

In the above structure, the slider is provided with an attachment portion fixed to the drive shaft, and from the attachment portion, the first portion is provided.
A pair of arm portions projecting toward the substrate side and provided with the contact point portion at the tip end portion, and if the pair of arm portions are set to have a symmetrical positional relationship about the drive shaft, Since the two contact portions in which the pair of arm portions elastically contact the first substrate are arranged in a well-balanced manner around the drive shaft,
The drive shaft is less likely to be tilted with respect to the first substrate, and it is possible to always operate in a stable state. At that time, the slider has a pair of protrusions that protrude toward the second substrate in the vicinity of the attachment portion and are in constant contact with the common electrode pattern, and the pair of protrusions are located symmetrically with respect to the drive shaft. It is preferable to set the relationship so that the contact state between the slider and the second substrate is stable.

Further, in the above-mentioned structure, a cylindrical operation knob to be rotated by an operator is provided, and connecting the drive shaft to one end side in the axial direction of the operation knob is a miniaturized rotary type. It is preferable for realizing a pulse switch.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an exploded perspective view of a composite operation type electronic component according to this embodiment, and FIG. 2 is a composite operation type electronic component. 3 is an external view of the component, FIG. 3 is a cross-sectional view of the composite operation type electronic component along the axis of the operation knob, FIG. 4 is a cross-sectional view of the composite operation type electronic component along the radial direction of the operation knob, and FIG. Parts diagram of the rotary type pulse switch and operation knob shown, FIG. 6 is a part diagram of the block body including the frame body and the click mechanism section shown in FIG. 3, FIG. 7 is a part diagram of the mounting plate shown in FIG. 3, and FIG. 5 is a part view of the rotary pulse switch and the operation knob showing a cross section orthogonal to 5, FIG. 9 is an exploded perspective view of the rotary pulse switch, and FIG. 10 is a front view showing a second substrate provided in the rotary pulse switch. Fig. 11 and Fig. 11 show cutting planes orthogonal to Fig. 6. Parts view of the block body, FIG. 12 is an exploded perspective view of the block body, FIG. 13 is an operation explanatory view of a rotary type pulse switch.

The composite operation type electronic parts shown in these figures are
A mounting plate 1 made of a metal plate, a frame body 2 swingably held by the mounting plate 1, a click mechanism section 3 incorporated in the frame body 2, and a click shaft body 4 of the click mechanism section 3. Mounted on the mounting plate 1 is a cylindrical operation knob 5 rotatably held on the frame body 2 via a rotary pulse switch 6 that generates a rectangular wave in conjunction with the rotation of the operation knob 5. The flexible substrate 7 placed on the mounting plate 1 and a push-button switch 8 of a self-returning type that is driven by the frame body 2 that is also placed on the mounting plate 1 and is swung in one direction are driven.

The mounting plate 1 is formed with a rotary shaft holding portion 1a having a semicircular cross section, and oval-shaped engagement holes 1b and 1c are formed in both side plates of the mounting plate 1.

The frame body 2 is formed of synthetic resin, and the support shaft 2a, the housing portion 2b and the driving body 2c are integrated. The accommodating portion 2b has a substantially cylindrical shape, and the support shaft 2a and the driving body 2c extend in parallel to each other with the accommodating portion 2b interposed therebetween. Then, by fitting the support shaft 2a into the rotating shaft holding portion 1a of the mounting plate 1, the frame body 2 is swingably held by the mounting plate 1 with the supporting shaft 2a as the rotating shaft.

The operating knob 5 is made of synthetic resin, and the operating knob 5 has recesses 5a at both ends in the axial direction.
5b is provided. As shown in FIG. 3, a part of the rotary pulse switch 6 is housed in one recess 5a, and a part of the housing part 2b of the frame body 2 is housed in the other recess 5b. . However, some clearance is secured between the inner wall surface of the recess 5a and the rotary pulse switch 6, and between the inner wall surface of the recess 5b and the housing portion 2b of the frame body 2.

The rotary type pulse switch 6 is also called an encoder. As shown in FIGS. 5 and 8 to 10, an A-phase contact pattern 10a and a B-phase contact pattern 10b are provided on one surface (pattern surface). A first substrate 11, a second substrate 12 provided with a common electrode pattern 13 on a surface facing the pattern surface of the first substrate 11, and a rotatable shaft 15 having a slider 15 held on a drive shaft 14. It is composed of a movable body 9. A shaft hole 11a is provided in the center of the first substrate 11, and a plurality of mounting legs 11b are provided so as to project around the pattern surface of the first substrate 11. And drive shaft 1
4 is inserted into the shaft hole 11a from the pattern surface side of the first substrate 11, and each mounting leg 11b of the first substrate 11 is attached to the second substrate 1
By press-fitting into the mounting hole 12d provided in 2, the rotary pulse switch 6 having a hermetic structure in which the slider 15 is sandwiched between the first substrate 11 and the second substrate 12 is realized. That is, the rotary pulse switch 6 includes the slider 1 sandwiched between the first substrate 11 and the second substrate 12.
5 is always brought into contact with the common electrode pattern 13, and the contact portions 17a and 18a formed on the slider 15 are brought into sliding contact with the pattern surface of the first substrate 11 so that the contact is accompanied by the rotation of the drive shaft 14. The parts 17a and 18a contact and separate from the contact patterns 10a and 10b to output a rectangular wave.

The slider 15 is formed by forming a thin metal plate, and has an annular mounting portion 16 insert-molded on the drive shaft 14 made of synthetic resin, and a first mounting portion from this mounting portion 16.
And a pair of arm portions 17 and 18 protruding toward the substrate 11 side. The pair of arm portions 17 and 18 are set in a symmetrical positional relationship with the drive shaft 14 as a center.
Contact points 17a and 18a are provided at the center of the projecting end portion of 8, respectively. Therefore, the pair of arm portions 17, 18 elastically contact the first substrate 11 at the two contact portions 17a, 18
Since a is always arranged in a well-balanced manner around the drive shaft 14, and the drive shaft 14 is less likely to tilt with respect to the first substrate 11, it is possible to always operate in a stable state. In addition, in the vicinity of the mounting portion 16 of the slider 5, the common electrode pattern 13 is projected toward the second substrate 12 side.
A pair of protrusions 16a and 16b that are always in contact with the drive shaft 14
Since the positional relationship is symmetrical with respect to, the contact state between the slider 15 and the second substrate 12 is also stable. In addition,
In the present embodiment example, each contact portion 17a, 18a and each protrusion 1
Since 6a and 16b are arranged in a well-balanced manner at equal intervals of 90 degrees, there is no concern that the drive shaft 14 tilts with respect to the first and second substrates 11 and 12.

If the pair of arm portions 17 and 18 of the slider 15 are configured to project to the first substrate 11 side,
The first substrate 11 and the second substrate 12 can be configured by exchanging the mutual arrangement in the axial direction of the drive shaft 14, but as in the present embodiment, the tip side of the drive shaft 14 ( The first substrate 11 is provided on a side on which an operation knob 5 described later is arranged).
Is more preferably arranged, and the second substrate 12 is arranged on the rear end side of the drive shaft 14. With such an arrangement, even if a pressing force is applied to the drive shaft 14 in the axial direction at the time of operation, the rear end side of the drive shaft 14 will have the common electrode pattern of the second substrate 12 via the mounting portion 16. Since it is supported by 13 and positioned in the axial direction, the drive shaft 14 does not move in the axial direction. Therefore, the electrical connection between the first substrate 11 and the second substrate 12 via the contact portions 17a and 18a can be surely performed, which is preferable.

As shown in FIGS. 1 and 9, the first substrate 11
On the lower surface of the terminal 19 derived from the A-phase contact pattern 10a
A terminal 19b extending from the a-phase and B-phase contact pattern 10b is provided, a terminal 20 extending from the common electrode pattern 13 is provided on the lower surface of the second substrate 12, and each terminal 19a, 19b, 20 is flexible. Soldered to the tongue portion 7 a of the board 7. At that time, the terminals 19a and 19b of the first substrate 11 and the terminals 20 of the second substrate 12 are projected in the state of being aligned in a line and are projected to the outside.
The a, 19b, 20 and the flexible substrate 7 can be easily soldered. In this embodiment, the patterns 10a, 10b, 13 made of a metal plate are integrated with the substrates 11, 12 by insert molding. However, the patterns 10a, 10b, 13 are made by the substrates 11, 12 respectively.
It is also possible to form by printing on the surface of.

The click mechanism section 3 comprises a click shaft body 4 and a metal cover 21, and the click mechanism section 3 is connected to the frame body 2.
1 and 11, 12 in combination with
The block body 22 is formed as shown in FIG. The click shaft body 4 is molded of synthetic resin, and a click cam lobe 4b is formed on the collar portion 4a on one end side thereof, and the other end side thereof is an oval cross section which is press-fitted and fixed to the shaft core portion of the operation knob 5. Is a connecting shaft 4c. The click shaft body 4 is rotatably held by the frame body 2 in a state where the connecting shaft 4c is inserted into the housing portion 2b of the frame body 2 and the collar portion 4a is housed in the housing portion 2b. The drive shaft 14 projecting from the first substrate 11 of the rotary pulse switch 6 is press-fitted inside the operation knob 5 at the tip of the connecting shaft 4c of the click shaft body 4, and the drive shaft 14 is connected. The operation knob 5 is interlocked with the rotation via the shaft 4c. On the other hand, the metal cover 21
In addition, a leaf spring portion 21a that engages with and disengages from the click cam mountain 4b of the collar portion 4a is formed in a folded shape.
A book locking piece 21b is formed to project. Each locking piece 21
b is caulked and fixed to the housing portion 2b of the frame body 2 from the outside, and the inner space of the housing portion 2b is closed by a metal cover 21.

The support shaft 2a of the frame body 2 and the tip of the driving body 2c are inserted and retained in connection holes 12a and 12b (see FIG. 10) provided on both sides of the second substrate 12, respectively. . And the second projecting on the extension line of the driving body 2c
The protrusion 12c of the base plate 12 and the protrusion 2d of the frame 2 protruding toward the base end side of the driving body 2c are respectively inserted into the oval-shaped engaging holes 1b and 1c formed on both side plates of the mounting plate 1. Has been inserted. As a result, the entire movable portion of the composite operation type electronic component in which the rotary pulse switch 6 and the block body 22 (the frame body 2 and the click mechanism portion 3) are incorporated at both ends of the operation knob 5 is located in the engagement holes 1b and 1c. Thus, the protrusions 12c and 2d are held on the mounting plate 1 in a state in which a slight swing that allows the protrusions 12c and 2d to move up and down is allowed.

Next, the operation of the composite operation type electronic component thus constructed will be described. Now, when the operator rotationally operates the operation knob 5, the drive shaft 14 integrally rotates through the click shaft body 4, so that the contact portion 1 of the slider 15 is rotated.
7a and 18a contact and separate from the A-phase contact pattern 10a and the B-phase contact pattern 10b. However, the protrusions 16a and 16b of the slider 15 are always in contact with the common electrode pattern 13. The A-phase contact pattern 10a and the B-phase contact pattern 10b on the first substrate 11 have a pattern shape as shown in FIG. 13. For example, as shown in FIG. Contact patterns 10a, 1
In the state where it is not in contact with 0b, neither the A-phase signal nor the B-phase signal is output.

However, when the slider 15 is rotated to the position shown in FIG. 2 (b), the contact portion 17a is not in contact with any of the contact patterns 10a and 10b, but the contact portion 18a.
Contacts the A-phase contact pattern 10a, the contact pattern 10a and the common electrode pattern 13 are electrically connected, and only the output of the A-phase signal is switched from off to on.

When the slider 15 further rotates and reaches the position shown in FIG. 1C, the contact portion 17a contacts the B-phase contact pattern 10b and the contact portion 18a contacts the A-phase contact pattern 10.
Since it remains in contact with a, the output of the A-phase signal remains on, and the output of the B-phase signal also switches from off to on.

When the slider 15 further rotates and reaches the position shown in FIG. 4D, the contact portion 17a remains in contact with the B-phase contact pattern 10b, but the contact portion 18a remains in contact with the A-phase contact pattern 10a. Since the output of the A-phase signal is switched from on to off, the output of the B-phase signal remains on.

When the slider 15 further rotates and reaches the position shown in FIG. 7E, the contact portion 17a is separated from the B-phase contact pattern 10b, and the contact portion 18a has any contact pattern 10a, 10b. I'm not in contact with
The outputs of the A-phase and B-phase signals are turned off again. After that, similar on / off is repeated with the rotation of the slider 15 which is interlocked with the operation knob 5. Therefore, A
A rectangular wave is output from the phase signal and the B-phase signal with a predetermined phase difference, and the rotation angle (rotation amount) and the rotation direction of the operation knob 5 can be detected based on the pulse signal. The collar 4a of the click shaft body 4 has six click cam ridges 4 corresponding to the contact patterns 10a and 10b.
b is formed and the output of the A-phase or B-phase signal is turned on.
A feeling of click is generated each time it is switched off.

When the operator presses the operation knob 5 in the direction of the arrow in FIG. 4, the frame is formed by using the support shaft 2a held by the rotary shaft holding portion 1a of the mounting plate 1 as the rotary shaft. Since the body 2 swings in the pressing operation direction, the driving body 2c is pushed in the same direction and presses the push button switch 8. As a result, the ON signal is output from the push button switch 8,
For example, the detection signal selected by rotating the operation knob 5 is
It can be confirmed by the ON signal of the push button switch 8. Further, when the pressing operation force on the operation knob 5 is removed, the driving body 2c is pushed up by the elastic force of the spring member (for example, a tact spring) provided in the push button switch 8, and accordingly the frame body 2 and the operation knob 5 are restored. It is supposed to return to the position. The elastic force of the spring member is erroneously generated when the operation knob 5 is rotated.
Is set to a strength that does not work.

As described above, in this embodiment, the A-phase and B-phase contact patterns 10a and 10b and the common electrode pattern 13 are provided on the different substrates 11 and 12 and face each other. The diameter of the pattern surface can be reduced, and the miniaturization of the rotary pulse switch 6 can be facilitated. Therefore, the rotary pulse switch 6 can be downsized and the diameter of the operation knob 5 can be easily reduced. Also, A-phase and B-phase contact pattern 1
0a, 10b and the common electrode pattern 13 do not need to be aligned in the same plane.
Since it suffices to consider only the relative positional relationship of the phase contact pattern 10b, the pattern surfaces of the substrates 11 and 12 can be easily formed.

Further, in this embodiment, since the rotary pulse switch 6 and the housing portion 2b of the frame body 2 are respectively incorporated in the recesses 5a and 5b provided at both ends of the operation knob 5 in the axial direction, the operation is performed. The length dimension of the entire electronic component along the axial direction of the knob 5 can be shortened. Further, the rotary pulse switch 6 includes the pair of substrates 11 and 12 and the slider 15
The rotary type pulse switch 6 has a dust-proof property and reliability because it has a sealed structure in which is sandwiched.

[0029]

The present invention is carried out in the form as described above, and has the following effects.

Since the A-phase and B-phase contact patterns and the common electrode pattern are provided on different substrates and face each other,
It is possible to reduce the diameter of the pattern surface of each substrate.
Since it is not necessary to align the phase and B-phase contact patterns with the common electrode pattern in the same plane, only the relative positional relationship between the A-phase contact pattern and the B-phase contact pattern needs to be taken into consideration. It will be easier. as a result,
It is possible to provide a rotary pulse switch that is easy to miniaturize and easy to manufacture.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a composite operation type electronic component according to an exemplary embodiment of the present invention.

FIG. 2 is an external view of the composite operation type electronic component.

FIG. 3 is a sectional view of the composite operation type electronic component taken along the axis of the operation knob.

FIG. 4 is a cross-sectional view of the composite operation type electronic component along the radial direction of the operation knob.

5 is a component diagram of the rotary pulse switch and operating knob shown in FIG. 3. FIG.

6 is a component diagram of a block body including a frame body and a click mechanism section shown in FIG. 3. FIG.

FIG. 7 is a component diagram of the mounting plate shown in FIG.

8 is a component diagram of a rotary pulse switch and an operating knob showing a cross section orthogonal to FIG.

FIG. 9 is an exploded perspective view of the rotary pulse switch.

FIG. 10 is a front view showing a second substrate provided in the rotary pulse switch.

FIG. 11 is a component diagram of the block body showing a cross section orthogonal to FIG. 6;

FIG. 12 is an exploded perspective view of the block body.

FIG. 13 is an operation explanatory diagram of a rotary pulse switch.

[Explanation of symbols]

1 Mounting plate 2 frame 2a Support shaft 2c driver 4 click shaft 4b Cam mountain for click 4c connecting shaft 5 operation knob 6 rotary pulse switch 7 Flexible substrate 8 push button switch 9 movable body 10a A phase contact pattern 10b B phase contact pattern 11 First substrate 12 Second substrate 13 Common electrode pattern 14 Drive shaft 15 Slider 16 Mounting part 16a, 16b protrusion 17,18 Arm 17a, 18a contact part 19a, 19b, 20 terminals 21 metal cover 21a leaf spring part

Claims (4)

[Claims] 1. A first substrate provided with an A-phase contact pattern and a B-phase contact pattern, a second substrate provided with a common electrode pattern, and a movable body holding a slider on a rotatable drive shaft. And sandwiching the slider between the first substrate and the second substrate, keeping the slider in constant contact with the common electrode pattern, and a contact portion provided on the slider. Is a slidable contact with the A-phase and B-phase contact patterns so as to be able to contact and separate from each other. 2. The attachment according to claim 1, wherein the slider is fixed to the drive shaft, and the contact portion is provided at a protruding end portion protruding from the attachment portion toward the first substrate. And a pair of arm portions, and the pair of arm portions are set so as to have a symmetrical positional relationship with respect to the drive shaft. 3. The pair of protrusions according to claim 2, wherein the slider has a pair of protrusions protruding toward the second substrate in the vicinity of the mounting portion and being in constant contact with the common electrode pattern.
A rotary pulse switch, wherein the pair of protrusions are set to have a symmetrical positional relationship with respect to the drive shaft. 4. The operation knob according to claim 1, further comprising a cylindrical operation knob that is rotated by an operator, and the drive shaft is connected to one end side in the axial direction of the operation knob. A rotary pulse switch characterized in that