JP2004172007A - Rotary electronic parts - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enhance reliability and obtain optimum actuating force by using an optimum grease for each part. <P>SOLUTION: A leaf spring 8 for click is mounted on the surface of a footing 4, a groove 13 for click is formed so as to slide on the leaf spring 8 for click on the backside of a flange part 12, a slider piece 15 is mounted on the surface of the flange part 12, and a conductor pattern 19 is formed so as to slide on the slider piece 15 on the backside of an insulating substrate 17 mounted on a position opposing to the surface of the flange part 12. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a rotary electronic component used for various electronic devices.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, rotary electronic components such as a rotary encoder have been used as electronic components for controlling various electronic devices such as an air conditioner.
[0003]
To describe such a conventional rotary electronic component, the rotary electronic component is extended in the axial direction with a base having a through-hole formed in a central portion and an outer edge of the through-hole in the base as a base end. A fixed body having a fixed side tubular portion is provided, and a conductive pattern is formed on a surface of the base.
[0004]
In addition, the rotary electronic component includes a rotation-side cylinder portion rotatably mounted on the cylinder portion of the fixed body, and a flange portion extending outward from one edge of the rotation-side cylinder portion. Having a rotating body. A slider piece is fixed to the bottom surface of the flange of the rotor, and the slider piece rotates with the rotor while slidingly contacting the conductive pattern when the rotor rotates. It has become. Further, a plurality of click grooves are formed on the surface of the flange.
[0005]
Further, the rotary electronic component includes an annular click leaf spring as a click member disposed so as to face each of the click grooves, and the fixed body, the rotating body and the click body. The leaf spring is integrally held by the frame. And the said rotary electronic component was attached to various electronic devices by the said frame (for example, patent document 1).
[0006]
In such a rotary electronic component, a sliding portion between the tubular portion of the fixed body and the tubular portion of the rotating body, the leaf spring for click, and The viscous grease was filled in the sliding contact with the groove. On the other hand, the sliding contact portion between the slider piece and the conductive pattern is filled with low-viscosity grease, and this grease is separated by a brush or the like, thereby causing poor contact between the slider piece and the conductive pattern. Had been prevented.
[0007]
[Patent Document 1]
JP-A-2002-110001
[Problems to be solved by the invention]
However, in the rotating electronic component, when the rotating body is mounted on the fixed body, highly viscous grease applied to the surface of the fixed side cylindrical portion flows into the base surface of the fixed body, and the slider There is a possibility that the sliding contact portion between the piece and the conductive pattern may be reached. And since such highly viscous grease cannot be separated by a brush or the like, poor contact between the slider piece and the conductive pattern occurs, and as a result, the reliability of the rotary electronic component is impaired. There was a problem that sometimes.
[0009]
On the other hand, in order to solve the above-described problem, it is conceivable to fill a sliding portion between the fixed-side tubular portion and the rotating body-side tubular portion with low-viscosity grease. In this case, it becomes impossible to achieve the purpose of obtaining the operating force by increasing the rotational torque.
[0010]
The present invention has been made in view of these points, and provides a rotary electronic component that can obtain an optimal operating force without impairing reliability by using an optimal grease for each part. The purpose is to:
[0011]
[Means for Solving the Problems]
In order to achieve the above object, a rotary electronic component according to the present invention includes a fixed body having a base portion and a fixed side shaft portion extending in an axial direction from an inner peripheral portion of the base portion, A rotating body having a rotating side shaft portion rotatably mounted on the outside and a flange portion extending in an outer peripheral direction from one end edge of the rotating side shaft portion and formed so as to face the base portion; and the fixed body. And a frame body that integrally holds the rotating body, a click member mounted on the front surface of the base or the back surface of the flange, and the click member on one of the front surface of the base and the back surface of the flange. A click groove formed so as to slide on the member, a slider piece mounted on the surface of the flange portion or a position facing the surface of the flange portion, and a surface of the flange portion or the flange portion. The slider is located at one of the other positions facing the surface. And having a arranged conductive patterns to slide.
[0012]
According to the rotary electronic component of the present invention, since the sliding portion between the slider piece and the conductive pattern is positioned above the flange portion of the rotating body, the fixed-side shaft portion and the rotating-side shaft portion It is possible to prevent high-viscosity grease filled in the sliding surface from flowing into the sliding portion between the slider piece and the conductive pattern. Even when the amount of high-viscosity grease used on the sliding surface between the fixed-side shaft portion and the rotation-side shaft portion is large, the grease is applied to the sliding portion between the click member and each of the click grooves. And can be effectively used as grease for the sliding portion. In addition, since low-viscosity grease can be used for a sliding portion between the slider piece and the conductive pattern, optimal grease can be used for each part.
[0013]
Further, another rotary electronic component according to the present invention includes an insulating substrate mounted so as to face the surface of the flange portion, and mounting the slider piece on the surface of the flange portion, The conductive pattern is formed on the back surface of the insulating substrate.
[0014]
According to the other rotary electronic component according to the present invention, since the insulating substrate is mounted so as to face the surface of the flange portion of the rotating body, the sliding portion between the slider piece and the conductive pattern can be used. Dust protection can be achieved. In addition, the sliding surface between the slider piece and the conductive pattern is a surface on which the conductive pattern is formed. According to another rotary electronic component according to the present invention, the conductive pattern is provided on the insulating substrate. Therefore, compared to the case where the conductive pattern is provided on the surface of the flange portion, it is more likely that the highly viscous grease filled in the sliding surface between the fixed shaft and the rotating shaft will adhere to the sliding surface. It can be reliably prevented.
[0015]
BEST MODE FOR CARRYING OUT THE INVENTION
An embodiment of a rotary electronic component according to the present invention will be described below with reference to FIGS. Here, in the present embodiment, a rotary encoder will be described as an example.
[0016]
FIG. 1 is a plan view showing an embodiment of a rotary encoder according to the present embodiment, and FIG. 2 is a cross-sectional side view taken along AA of the rotary encoder shown in FIG.
[0017]
As shown in FIGS. 1 and 2, the rotary encoder 1 has a fixed body 2 made of a material such as a synthetic resin which is an insulating material. The fixed body 2 has a base portion 4 having a substantially octagonal cross section and a circular through hole 3 inside, and extends upward in the axial direction with the outer edge of the through hole 3 in the base portion 4 as a base end. A fixed-side cylindrical portion as a fixed-side shaft portion; and a side wall portion 6 extending axially upward with a shorter height than the fixed-side cylindrical portion 5 with an outer edge of the base portion 4 as a base end. ing. Further, two small projections (not shown) for positioning are provided on the surface of the base 4 of the fixed body 2, and two small protrusions for positioning are provided on the surface edge of the side wall of the fixed body. Three small projections 7 are provided.
[0018]
An annular click leaf spring 8 as a click member is disposed on the surface of the base portion 4 of the fixed body 2, and the position where the small projections are formed on the outer peripheral edge of the click leaf spring 8. A protrusion (not shown) protrudes outward at a position corresponding to. A positioning hole (not shown) is formed in each of the projections so as to correspond to each of the small projections, and the click leaf spring 8 is formed in the base 4 of the fixed body 2. The small projections and the positioning holes are fitted to each other to be fixed to the surface of the base 4 of the fixed body 2.
[0019]
Further, the rotary encoder 1 has a rotating body 10 made of a material such as a synthetic resin which is an insulating material. The rotating body 10 includes a rotating cylinder 11 as a rotating shaft that is rotatably mounted outside the fixed cylinder 5, and one end edge of the rotating cylinder 11 from the rotating cylinder 11. And a flange portion 12 extending outward at an angle perpendicular to the fixed-side cylindrical portion 11 around the axis of the center portion. The flange 12 is formed on the surface of the fixed body 2 so as to fit inside the side wall 6, and has four small projections (see FIG. (Not shown), and a plurality of click grooves 13 are formed on the back surface of the flange portion 12.
[0020]
Furthermore, a semi-annular slider piece 15 is disposed on the surface of the flange 12 of the rotating body 10, and a position corresponding to each small projection of the flange 12 on the slider piece 15. Are formed with positioning holes (not shown). The slider piece 15 is fixed to the surface of the flange 12 of the rotating body 10 by fitting each small projection of the rotating body 10 with each of the positioning holes. I have.
[0021]
In addition, the rotary encoder 1 has a substantially octagonal insulating substrate 17 having the same size as the base 4 of the fixed body 2, and a rotary side cylinder of the rotating body 10 at the center of the insulating substrate 17. A through hole 18 having a size that fits on the outer surface of the portion 11 is formed. Further, a conductive pattern 19 is formed on the back surface of the insulating substrate 17, and a position corresponding to each small protrusion 7 protruding from the side wall 6 of the fixed body 2 on the insulating substrate 17 is provided. Each has a positioning hole 20 formed therein. The insulating substrate 17 is provided on the surface of the side wall 6 of the fixed body 2 by fitting each small projection 7 formed on the side wall 6 of the fixed body 2 with each of the positioning holes 20. The conductive pattern 19 is slidably contacted with the slider piece 15 when the rotating body 10 is turned on in this state.
[0022]
Further, the rotary encoder 1 has a frame 22 made of a metal plate, and the frame 22 has a substantially annular shape having a size that fits on the outer surface of the rotation-side cylindrical portion 11 of the rotating body 10. The frame body 23 includes a plurality of mounting portions 24 extending downward from the outer peripheral edge of the frame main body 23 and a plurality of terminals 25 extending downward from the outer peripheral edge of the frame main body 23. The frame body 22 is mounted so that the frame main body 23 is fitted to the outside of the rotation-side tubular portion 11, and the fixing body 2, the rotating body 10, and the insulating substrate 17 are fixed by the mounting portions 24. And the rotary encoder 1 is mounted on various electronic devices by the mounting portions 24.
[0023]
Next, an assembly process of the rotary encoder 1 according to the present embodiment will be described.
[0024]
First, the click leaf spring 8 is mounted and fixed on the surface of the base 4 such that each positioning hole of the click spring 8 fits into each small projection on the surface of the base 4 of the fixed body 2.
[0025]
Next, as shown in FIG. 3, a highly viscous grease 27 is applied to the outer surface of the fixed side cylindrical portion 5 of the fixed body 2 and the surface of the click leaf spring 8, as shown in FIG. The rotating body 10 is fixed to the fixed body so that each click groove 13 of the flange 12 abuts against the click leaf spring 8 while sliding the inner surface of the side cylindrical part 11 against the outer surface of the fixed side cylindrical part 5. 2 is mounted on the surface of the base 4. At this time, the highly viscous grease 27 applied to the outer surface of the fixed-side cylindrical portion 5 slides on the inner surface of the rotating-side cylindrical portion 11 so that the fixed-side cylindrical portion 5 and the rotating-side cylindrical portion The grease 27 spreads evenly over the entire sliding surface of the portion 11 and the excess grease 27 flows on the surface of the click leaf spring 8.
[0026]
Further, the slider piece 15 is mounted and fixed on the surface of the flange 12 so that each positioning hole of the slider piece 15 fits into each small projection of the flange 12 of the rotating body 10. A low-viscosity grease 28 is applied to the surface of the piece 15. Subsequently, the positioning holes 20 of the insulating substrate 17 are fitted into the small projections 7 of the side wall 6 of the fixed body 2, and the surface of the slider piece 15 is electrically connected to the conductive pattern 19 of the insulating substrate 17. Is mounted on the surface of the flange portion 12 so as to abut against.
[0027]
Then, the frame body 22 is mounted so that the back surface of the frame body 23 abuts on the surface of the insulating substrate 2 and the back surface of each mounting portion 24 abuts on the surface of the side wall portion 6 of the fixed body 2, and is rotated. Assemble the encoder 1.
[0028]
In such a rotary encoder 1, when the rotating body 10 is rotated, each of the click grooves 13 slides on the clicking leaf spring 8 fixed to the fixed body 2 and is fixed to the rotating body 10. The sliding piece 15 slides on the conductive pattern 19 on the insulating substrate 17 to generate a pulse signal.
[0029]
According to the present embodiment, since the sliding portion between the slider piece 15 and the conductive pattern 19 is located more than the flange portion 12 in the rotating body 10, the fixed-side tubular portion and the rotating-side tubular portion are located. It is possible to prevent high-viscosity grease filled in the sliding surface between the sliding piece and the conductive pattern from flowing into the sliding portion between the slider piece and the conductive pattern as in the related art. Even when the amount of high-viscosity grease 27 used on the sliding surface between the fixed-side cylinder portion 5 and the rotation-side cylinder portion 11 is large, the grease 27 is It flows into the sliding portion with each of the click grooves 13 and can be used as grease for this sliding portion. Then, since low-viscosity grease 28 can be used for the sliding portion between the slider piece 15 and the conductive pattern 19, as a result, the optimal grease 27, 28 can be used for each part. .
[0030]
Therefore, the rotary encoder 1 has a high sliding surface between the fixed-side tubular portion 5 and the rotating-side tubular portion 11 and a sliding portion between the click leaf spring 8 and each of the click grooves 13. By using the viscous grease 27, it is possible to obtain an optimal operating force with a large rotating torque. Further, even when the amount of grease 27 used on the sliding surface between the fixed-side cylindrical portion 5 and the rotating-side cylindrical portion 11 is large, the grease 27 is removed by the click leaf spring 8 and the clicks. The grease 27 can be used as the grease 27 in the sliding portion with the groove 13, so that the application amount of the grease 27 can be easily managed. Further, since a low-viscosity grease 28 can be used in a sliding portion between the slider piece 15 and the conductive pattern 19, a contact failure between the slider piece 15 and the conductive pattern 19 is prevented. As a result, the reliability of the rotary encoder 1 can be improved.
[0031]
Further, since the insulating substrate 17 is mounted so as to face the surface of the flange portion 12 of the rotating body 10, dust on the sliding portion between the slider piece 15 and the conductive pattern 19 can be prevented. it can. Therefore, poor contact between the slider piece 15 and the conductive pattern 19 can be further prevented.
[0032]
Note that the present invention is not limited to the above embodiment, and can be variously modified as needed.
[0033]
For example, in the present embodiment, the click leaf spring 8 is mounted on the surface of the base 4 of the fixed body 2, and each click groove 13 is formed on the back surface of the flange 12 of the rotating body 10. The present invention is not limited to this, and a plurality of click grooves may be formed on the front surface of the base, and a click member may be mounted on the back surface of the front device.
[0034]
Further, a slider piece 15 is mounted on the surface of the flange portion 12 of the rotating body 10, and an insulating substrate 17 on which the conductive pattern 19 is formed is mounted so as to contact the surface of the slider piece 15. However, the present invention is not limited to this, and a conductive pattern may be formed on the surface of the flange portion, and a slider piece may be mounted on the back surface of the insulating substrate.
[0035]
Furthermore, the rotary encoder 1 in the present embodiment is of a hollow type, but is not limited to this.
[0036]
Further, in the present embodiment, the description has been given using the rotary encoder 1 as the rotary electronic component. However, the present invention is not limited to this, and may be applied to, for example, a variable resistor. In that case, the conductive pattern may be formed by a resistor pair pattern.
[0037]
【The invention's effect】
As described above, according to the rotary electronic component according to the present invention, the rotary electronic component has a sliding surface between the fixed shaft and the rotary shaft, and a sliding surface between the click member and each of the click grooves. By using high viscosity grease for the part, the rotational torque is heavy and an optimal operating force can be obtained. Further, even when the amount of grease used on the sliding surface between the fixed side shaft and the rotating side shaft is large, the grease is used as the grease of the sliding portion between the click member and each of the click grooves. Since the grease can be used, the amount of the grease applied can be easily managed. Further, since low-viscosity grease can be used in the sliding portion between the slider piece and the conductive pattern, it is possible to prevent poor contact between the slider piece and the conductive pattern, and thereby, The reliability of the mold electronic component can be improved.
[0038]
Further, according to another rotary electronic component according to the present invention, it is possible to prevent dust on a sliding portion between the slider piece and the conductive pattern. It can be further prevented. In addition, since highly viscous grease can be reliably prevented from adhering to the conductive pattern, poor contact between the slider piece and the conductive pattern can be further prevented. Thereby, the reliability of the rotary electronic component can be further improved.
[Brief description of the drawings]
FIG. 1 is a plan view showing an embodiment of a rotary electronic component according to the present invention; FIG. 2 is a cross-sectional side view taken along AA of the rotary electronic component shown in FIG. 1; FIG. Cross-sectional schematic diagram showing a case where grease is filled between a fixed-side tubular portion and a rotating-side tubular portion of an electronic component.
DESCRIPTION OF SYMBOLS 1 Rotary encoder 2 Fixed body 4 Base part 5 Fixed side cylinder part 6 Side wall part 8 Click leaf spring 10 Rotary body 11 Rotation side cylinder part 12 Flange part 13 Click groove 15 Slider piece 17 Insulating substrate 19 Conductive pattern 22 Frame Body 23 Frame body 27 High-viscosity grease 28 Low-viscosity grease

Claims (2)

A fixed body having a base portion and a fixed side shaft portion extending in the axial direction from an inner peripheral portion of the base portion;
A rotation-side shaft portion rotatably mounted on the outside with respect to the fixed-side shaft portion; and a flange portion extending from one end edge of the rotation-side shaft portion in an outer peripheral direction and formed to face the base portion. A rotating body,
A frame body that integrally holds the fixed body and the rotating body,
A click member mounted on the front surface of the base portion or the back surface of the flange portion,
A click groove formed to slide on the click plate member on one of the front surface of the base portion and the back surface of the flange portion,
A slider piece mounted on the surface of the flange or at a position facing the surface of the flange,
A rotating electronic component, comprising: a conductor pattern disposed so as to slide on the slider piece on the other of the surface of the flange portion and a position facing the surface of the flange portion. Having an insulating substrate mounted so as to face the surface of the flange portion,
The rotary electronic component according to claim 1, wherein the slider piece is mounted on a surface of the flange portion, and the conductor pattern is formed on a back surface of the insulating substrate.

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