JP3038286B2 - Rotary pulse switch - Google Patents

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 for outputting a rectangular wave.

[0002]

2. Description of the Related Art A conventional rotary pulse switch is provided with an A-phase switch pattern, a B-phase switch pattern, and a common electrode pattern in the radial direction in order to extract two-phase outputs. This type is disclosed, for example, in Japanese Patent Application No. 4-246513.
Is disclosed.

[0003]

In the conventional rotary pulse switch, when two-phase output is taken out, an A-phase switch pattern, a B-phase switch pattern, and a common electrode pattern are sequentially provided in the radial direction. The pattern became larger and the pattern holding member became larger.

A first object of the present invention is to provide a rotary pulse switch which can reduce the radius of the pattern holding member and is excellent in miniaturization. A second object of the present invention is that at least one of the contact points of the slider piece can come into contact with the common electrode pattern, and after any of the contact points has passed through the phase, the next contact point has the same off-angle. An object of the present invention is to provide a rotary pulse switch capable of contacting the phase and taking out an N-phase output having a phase difference Z by taking an output between the common electrode pattern and the switch pattern.

[0005]

The first object of the present invention is to provide a continuous
In a rotary pulse switch that outputs a rectangular wave in a regular manner, a switch pattern in which comb-shaped conductive patterns are arranged in an arc, and a common electrode pattern arranged in an arc having the same radius as the switch pattern. A slider piece having at least two contact points for contacting the switch pattern and the common electrode pattern at any position during the rotation operation; a pattern holding member for holding the switch pattern and the common electrode pattern; comprises a sliding piece holding member for holding the Doko piece, and an operation shaft, wherein the sliding piece holding member and is integrally coupled is rotated operatively supported, 3
At any position within a range of 60 degrees, the common electrode pattern
The angle between the contact points to make contact is
This is achieved by a first means that is narrower than the angle at which the turn is formed .

The second object is that, in the first means, the number of phases is N, and the angle between the first ON position and the last ON position of the comb electrode of the switch pattern in each phase is Y.
Degree, the interval (off width) between adjacent comb-tooth electrodes in the phase is X degrees, and when the pattern range of the common electrode is W, the contact point that can contact the switch pattern of the slider piece is When (N + 1) places are provided in the circumferential direction and the interval is 360 / (N + 1) degrees, 360 / (N + 1) −Y = X, 360 / (N + 1) <W Achieved by the second means involved.

[0007]

According to the first means, the switch pattern and the common electrode pattern are provided at the same radius, and the switch pattern and the common electrode pattern are disposed within a range of 360 degrees.
Between the contact points so that they touch the common electrode pattern
Is the angle at which the common electrode pattern is formed.
Ri since the narrow, Parususui for outputting continuous square wave
Switch can be made smaller.

[0008] In the second means, at least one of the contact points of the slider piece can contact the common electrode pattern, and after the arbitrary contact point has passed through the phase, the next contact point has the same off angle. Contact points can contact the phase. Therefore, if an output is obtained between the common electrode pattern and the switch pattern, an N-phase output having a phase difference Z can be obtained.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the rotary pulse switch according to the present invention will be described below with reference to FIGS. FIG. 1 is a longitudinal sectional view showing the overall configuration of one embodiment, FIG. 2 is an explanatory diagram showing a pattern configuration of one embodiment, FIG. 3 is an explanatory diagram showing a slider piece of one embodiment, and FIG. FIG. 5 is a waveform diagram showing a pulse in the example, and FIG. 5 is an explanatory diagram showing a pattern configuration when an N phase is set.

The rotary type pulse switch shown in FIGS. 1 to 4 is a pulse switch for outputting two phases of A-phase and B-phase, and detects a rotation angle and a rotation direction by the pulse.

As shown in these figures, the rotary pulse switch comprises an operating shaft 7 supported by a bearing 8 and a slider which is a slider piece holding member inserted through and fixed to the operating shaft 7. A receiver 6 and a slider piece 4 fixed to the slider receiver 6
And a pattern 1 and 2 formed of a metal material, which are arranged to face the slider piece 4, and a case 5 which is a pattern holding member for holding the patterns 1 and 2. 8 and the case 5 are inserted through through holes provided in the peripheral portion to be integrated. Reference numeral 9 denotes a click leaf spring.

As shown in FIG. 2, patterns 1 and 2 are A-phase and B-phase switch patterns 1A and 1B in which comb-shaped conductive patterns are arranged in an arc shape, and A-phase and B-phase switch patterns. The common electrode pattern 2 includes a common electrode pattern 2 disposed in an arc having the same radius as 1A and 1B, and the switch pattern 1 has an A-phase switch pattern 1A and a B-phase switch pattern 1B. 13 is a terminal connected to the switch pattern 1A, 14 is a terminal connected to the B-phase switch pattern 1B, and 15 is a terminal connected to the common electrode pattern 2.

As shown in FIG. 2, the dimensional relationship between the A-phase switch pattern 1A, the B-phase switch pattern 1B, and the common electrode pattern 2 is such that, as shown in FIG. Angle between position and last on position is 10
8 degrees, the interval (off-width) between adjacent comb electrodes 1a and 1b in the phase is 12
Degree, the common electrode pattern 2 range is 125 degrees, and the gap 10 between the A-phase switch pattern 1A and the common electrode pattern 2
6 degrees, the gap 11 between the A-phase switch pattern 1A and the B-phase switch pattern 1B is 6 degrees, and the gap 1 between the B-phase switch pattern 1B and the common electrode pattern 2
2 is set to 7 degrees.

The slider piece 4 is formed of a metal material, and as shown in FIG. 3, a contact point 3 which contacts each of the patterns 1A, 1B, 2
a, 3b, and 3c are provided at three locations every 120 degrees in the radial direction.

Next, the operation of the above embodiment will be described. In the pulse switch of the present embodiment, the A-phase is taken out between the terminals 13 and 15, the B-phase is taken out between the terminals 14 and 15, and then the A-phase and the B-phase as shown in FIG.
Each phase pulse is output.

Hereinafter, the reason why the pulse is generated will be described. For simplification, only the pulse for the A phase will be described.
As described above, since the range of the common electrode pattern 2 is 125 degrees, at least one of the contact points 3a to 3c is in contact. Therefore, only the contact points that slide on the A-phase switch pattern 1A need to be considered. First, there is a contact point (this is, for example, 3a) at a position (first ON position) in FIG. 2 and when the operation shaft 7 is rotated counterclockwise, It is clear that a 12-degree rectangular wave is output both on and off up to the position (last on position). And contact point 3
Since the contact points 3b following a are arranged at intervals of 120 degrees,
When it is further rotated 12 degrees from the position, it comes to the position of the A-phase switch pattern 1A and is turned on. Therefore A
Contact points 3a and 3b (3b
And 3c, 3c and 3a) are also turned off every 12 degrees.

Also, as shown in FIG. 4, a 12-degree rectangular wave is output from the B-phase switch pattern 1B as in the case of the A-phase switch pattern 1A. There is a phase difference. This phase difference is because the gap 11 between the A-phase switch pattern 1A and the B-phase switch pattern 1B is set to 6 degrees.

Since the above embodiment has been described with reference to the example of the two-phase rotary pulse switch, the interval between the contact points 3 of the slider piece 4 is set to 120 degrees, and the switch pattern 1 of each phase is set to one.
Since the angle is set to 08 degrees, a 12-degree off portion occurs when the contact point 3 is switched, which is the same as the off interval of the comb tooth patterns (1a, 1b). At least one contact point of the slider piece 4 is in contact with the common electrode pattern 2. Further, in the above-described embodiment, an example has been described in which only one contact point of at most one slider piece 4 contacts the switch patterns 1A and 1B of each phase. Even if two or more switch patterns are in contact with each other, if these contact points are arranged at a multiple of 12 degrees, the pulses become the same and there is no problem. Therefore, in the above embodiment, three contact points of the slider piece 4 are provided at 120-degree intervals in the case of two phases, but the contact point of the slider piece 4 is 12 degrees [comb tooth pattern (1a, 1
If the interval is a multiple of [off interval of b)], more than three intervals may be provided.

In the above embodiment, a two-phase rotary pulse switch has been described as an example, but the present invention is not limited to this. That is, as shown in FIG. 5, the number of phases is N, the angle between the first ON position and the last ON position of the comb electrode of the switch pattern 1 in each phase is Y degrees, and the adjacent comb teeth in the phase Electrode spacing
When (off width) is X degrees and the range of the common electrode pattern 2 is W, contact points 3 that can contact the switch pattern 1 of the slider piece 4 are provided at (N + 1) locations in the circumferential direction, 360 /
When (N + 1) degrees, 360 / (N + 1) −Y = X, 360 / (N + 1) <W. For example, in the case of three phases, the range W of the common electrode pattern 2 is set to 90 or more, and the interval between adjacent comb-tooth electrodes in the phase is set.
If (off width) X is, for example, 12 degrees, the angle Y between the first ON position and the last ON position of the comb electrode may be 78 degrees.
Further, Z may be set to 6 degrees. Even in the case of one-phase, by setting the angle of the off portion generated when the contact point 3 is switched to be the same as the off interval X degrees of the comb tooth patterns (1a, 1b), at least the slider piece 4 One of the contact points 3 can contact the common electrode pattern 2 and after the arbitrary contact point 3 has passed through the switch pattern 1 of a certain phase, the next contact point 3 has the same off angle and the switch pattern of that phase 1 can be contacted. Therefore, if an output is taken between the common electrode pattern 2 and the switch patterns 1, 1,..., An N-phase output having a phase difference Z can be obtained.

In the case of N-phase, the contact point of the slider piece 4 is
(N + 1) pieces, but as described above, the slider piece 4
If the number of contact points is more than (N + 1) as long as it is a multiple of X degrees, the function of the N-phase rotary pulse switch will not be affected even if other points are provided.

In the above-described embodiment, in the rotary pulse switch for outputting a rectangular wave, the switch patterns 1A and 1B in which the comb-shaped conductive patterns are arranged in an arc shape, and the switch Common electrode pattern 2 arranged in an arc at the same radius as that of patterns 1A and 1B
And a slider piece 4 having at least two or more contact points 3 that contact the switch patterns 1A, 1B and the common electrode pattern 2 at any position during the rotation operation of the rotary pulse switch, and are shared with the switch patterns 1A, 1B. A case 5 for holding the electrode pattern 2, a slider receiver 6 for holding the slider piece 4, and an operating shaft 7 integrally coupled to the slider receiver 6 and rotatably supported. Since the switch patterns 1A and 1B and the common electrode pattern 2 are provided with the same radius, the radius of the pattern holding portion of the case 5 can be reduced, and the size can be reduced.

In the above embodiment, the number of phases is set to N
Phase, the angle between the first ON position and the last ON position of the comb electrode of the switch pattern 1 in each phase is Y degrees, the interval (off width) between adjacent comb electrodes in the phase is X degrees, the common electrode pattern When the range of 2 is set to W, contact points 3 that can contact the switch pattern 1 of the slider piece 4 are provided at (N + 1) locations in the circumferential direction, and the interval is 360 / (N + 1) degrees. Since 360 / (N + 1) −Y = X and 360 / (N + 1) <W, at least one of the contact points 3 of the slider piece 4 has the common electrode pattern 2 After passing through the switch pattern 1 of a certain phase at which any contact point 3 can be contacted with the next contact point 3 at the same off angle,
Can be taken out, and if an output is taken between the common electrode pattern 2 and the switch patterns 1, 1,..., An N-phase output having a phase difference Z can be taken out.

[0023]

According to the first aspect of the present invention, the switch pattern and the common electrode pattern are provided at the same radius, and 36
Touch the common electrode pattern at any position within 0 degree
The angle between the contact points so that the common electrode pattern is formed
Having smaller than the angle which is continuously outputs a rectangular wave
The pulse switch to be used can be downsized.

According to the invention described in claim 2, according to claim 1,
In addition to the effects of the above, at least one of the contact points of the slider piece can come into contact with the common electrode pattern, and after the arbitrary contact point has passed through the phase, the next contact point has the same off angle and the next contact point has the same phase. Therefore, if an output is taken between the common electrode pattern and the switch pattern, an N-phase output having a phase difference Z can be obtained.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing the entire configuration of an embodiment of a rotary pulse switch according to the present invention.

FIG. 2 is an explanatory diagram showing a pattern configuration of an embodiment of a rotary pulse switch according to the present invention.

FIG. 3 is an explanatory view showing a slider piece of an embodiment of the rotary pulse switch according to the present invention.

FIG. 4 is a waveform diagram showing pulses in one embodiment of the rotary pulse switch according to the present invention.

FIG. 5 is an explanatory diagram showing a pattern configuration when the rotary pulse switch according to the present invention has N phases.

[Explanation of symbols]

 1, 1A, 1B Switch pattern 2 Common electrode pattern 3, 3a, 3b, 3c Contact point 4 Slider piece 5 Case 6 Slider receiver 7 Operating shaft 11 Gap N Number of phases Y First on-position of comb electrode And the angle of the last ON position X Interval between adjacent comb-tooth electrodes in the phase (OFF width) W Range of common electrode pattern 2 Z Phase difference

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) H01H 19/00 H01H 19/58

Claims (2)

(57) [Claims] 1. A rotary pulse switch for continuously outputting a rectangular wave, comprising: a switch pattern in which comb-shaped conductive patterns are arranged in an arc; and a switch pattern in which arcs are arranged in the same radius as the switch pattern. A common electrode pattern provided, a slider piece having at least two or more contact points in contact with the switch pattern and the common electrode pattern at any position during the rotation operation, and a pattern holding the switch pattern and the common electrode pattern comprising a holding member, a wiper contact holding member that holds the sliding piece, and a pivoting movement supported by the operating shaft integrally coupled with the wiper contact holding member, the range of 360 degrees At any position of the common electrode pattern
The angle between the contact points to contact the common electrode
A rotary pulse switch characterized by being narrower than the angle at which the pattern is formed . 2. The number of phases is N, the angle between the first ON position and the last ON position of the comb electrode of the switch pattern in each phase is Y degrees, and the distance between adjacent comb electrodes in the phase ( OFF width) X
When the range of the common electrode pattern is W, the (N + 1) contact points that can be in contact with the switch pattern of the slider piece are provided in the circumferential direction, and the interval is 360 /.
2. The rotary pulse switch according to claim 1, wherein, when (N + 1) degrees, 360 / (N + 1) -Y = X, 360 / (N + 1) <W. .