WO2011001733A1 - Potentiometer - Google Patents
Potentiometer Download PDFInfo
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- WO2011001733A1 WO2011001733A1 PCT/JP2010/056826 JP2010056826W WO2011001733A1 WO 2011001733 A1 WO2011001733 A1 WO 2011001733A1 JP 2010056826 W JP2010056826 W JP 2010056826W WO 2011001733 A1 WO2011001733 A1 WO 2011001733A1
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- spring
- torsion coil
- coil spring
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- case
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
- G01D5/14—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
- G01D5/16—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying resistance
- G01D5/165—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying resistance by relative movement of a point of contact or actuation and a resistive track
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D11/00—Component parts of measuring arrangements not specially adapted for a specific variable
- G01D11/10—Elements for damping the movement of parts
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D11/00—Component parts of measuring arrangements not specially adapted for a specific variable
- G01D11/16—Elements for restraining, or preventing the movement of, parts, e.g. for zeroising
- G01D11/18—Springs
Definitions
- the present invention relates to a potentiometer equipped with an automatic return mechanism for a rotating shaft, which is used for detecting the position of various devices.
- FIG. 1 shows an exploded perspective view of a potentiometer described in Patent Document 1 as a conventional example of this type of potentiometer.
- reference numeral 11 denotes a slider receiver.
- a boss 11b projects from the center of the bottom plate 11a, and a shaft 11c is formed upward and downward from the center.
- a pair of regulating walls 11d and 11e are erected on the outer periphery of the bottom plate 11a while maintaining a predetermined angle.
- the case 12 is a torsion coil spring that surrounds the boss 11b, and has a multi-turn laminated portion 12a, and an upper bent portion 12b and a lower bent portion 12c at the open end
- 13 is a case that houses the slider receiver 11.
- the case 13 has a notch 13a, and both side edges of the notch 13a are spring receivers 13b and 13c.
- the upper shaft 11 c of the slider receiver 11 is supported by the hole 13 d of the case 13, and the lower shaft 11 c is supported by the hole 15 b of the insulating substrate 15.
- the upper bent portion 12b of the torsion coil spring 12 is elastically locked to the spring receiver 13b and the restriction wall 11d
- the lower bent portion 12c is elastically locked to the spring receiver 13c and the restriction wall 11e.
- the end surfaces of the regulating walls 11d and 11e provided on the slider receiver 11 and the end surfaces of the spring receivers 13b and 13c provided on the case 13 are both flat. Therefore, the contact between the upper bent portion 12b and the lower bent portion 12c of the torsion coil spring 12 and the restriction walls 11d and 11e and the spring receivers 13b and 13c is basically a line contact.
- the end surfaces of the regulating walls 11d and 11e and the end surfaces of the spring receivers 13b and 13c may not be aligned with each other in a stationary state (neutral position) as shown in FIG. , 11e may be wider than the gap between the pair of spring receivers 13b, 13c, or vice versa.
- An object of the present invention is to provide a potentiometer having excellent detection accuracy by preventing backlash from occurring in a rotating shaft even in a neutral position in view of the above-described problems.
- the substrate on which the resistor pattern is formed, the rotor to which the slider that is in sliding contact with the resistor pattern is fixed, and the torsion coil spring are accommodated in the case, and the torsion coil spring is inserted.
- the rotor surrounds the torsion coil spring and includes a pair of spring guides having a circular arc shape along the outer diameter of the torsion coil spring. Both end portions led out in the direction are elastically contacted with both end surfaces in the circumferential direction of one spring guide of the pair of spring guides and both end surfaces in the circumferential direction of spring receivers protruding from the inner peripheral surface of the case. Both end surfaces in the direction and both end surfaces in the circumferential direction of the spring receiver are formed in point contact with both ends of the torsion coil spring.
- both end portions of the torsion coil spring for automatically returning the rotating shaft are in point contact with both end surfaces of the spring guide of the rotor and both end surfaces of the spring receiver of the case. Therefore, even if the both ends of the spring guide and the both ends of the spring receiver are not aligned at the neutral position due to, for example, dimensional tolerance, the shape of the ends of the torsion coil spring is not defined unlike the conventional line contact structure, Bending can be expected, that is, both ends of the torsion coil spring can be in good elastic contact with both the spring guide of the rotor and the spring receiver of the case. Thereby, according to this invention, the backlash of the rotor and the rotating shaft in the neutral position can be prevented, and a potentiometer excellent in detection accuracy can be obtained in this respect.
- FIG. 1 is an exploded perspective view of a conventional potentiometer.
- 2 is a sectional view of the potentiometer shown in FIG. 1 in a stationary state (neutral position).
- FIG. 3 is a cross-sectional view of the operation state of the potentiometer shown in FIG. 4A is a perspective view showing an embodiment of a potentiometer according to the present invention, and FIG. 4B is a front view thereof.
- 5A is a cross-sectional view taken along the line CC of FIG. 4B
- FIG. 5B is a cross-sectional view taken along the line DD of FIG. 4B.
- 6 is an exploded perspective view of the potentiometer shown in FIG. 4A.
- FIG. 7 is a view for explaining attachment of the slider to the rotor.
- FIG. 8A is a sectional view when the rotating shaft is in a neutral position
- FIG. 8B is a partially enlarged view thereof.
- FIG. 9A is a cross-sectional view of the state where the rotation shaft is fully rotated counterclockwise
- FIG. 9B is a cross-sectional view of the state where the rotation shaft is fully rotated clockwise.
- FIGS. 5A and 5B show the appearance of an embodiment of the potentiometer according to the present invention
- FIGS. 5A and 5B show the cross-sectional structure thereof.
- FIG. 6 is an exploded view of each part.
- the case 20 has a cylindrical base 21, and a rectangular plate portion 22 is formed on the back side of the base 21 so as to protrude from the outer peripheral surface. Largely projecting and formed in a flange shape in opposite directions.
- a stepped cylindrical portion 24 is formed on the front surface of the base 21 so as to protrude.
- a bearing 31 is accommodated in the cylindrical portion 24 of the case 20, and a metal sleeve 32 is accommodated in each sleeve hole 23 a of the pair of attachment portions 23.
- the case 20 and the bearing 31 are each made of synthetic resin. In this example, the bearing 31 and the sleeve 32 are insert-molded in the case 20. Both the case 20 and the bearing 31 are made of synthetic resin, but the case 20 is made of a resin having high rigidity and excellent flame retardancy, and the bearing 31 is made of a resin having excellent wear resistance.
- the rotor 40 has a plate portion 41 and a pair of spring guides 42 and 43 formed to protrude from one surface of the plate portion 41, and is made of synthetic resin.
- the pair of spring guides 42 and 43 each have an arc shape in cross section, and these arcs are positioned on the same circumference.
- the plate portion 41 has a disc shape, and a portion located on the outer peripheral side of one spring guide 43 is cut out.
- the rotary shaft 33 is made of metal, and an oval portion 33a is formed at one end thereof, and a small-diameter shaft 33b is protruded from the tip surface of the oval portion 33a.
- the rotary shaft 33 is insert-molded in the plate portion 41 of the rotor 40 and the rotor shaft 40 is integrated with the rotor 40 and positioned at the center of the arc formed by the spring guides 42 and 43.
- the shaft 33b formed on the front end surface of the oval shaped portion 33a protrudes from the back side of the plate portion 41 of the rotor 40.
- a slider 34 is attached to the back side of the plate portion 41 of the rotor 40. As shown in FIG. 7, a push nut press-fitting portion 44, a heat caulking portion 45, and a guide portion 46 are formed on the back surface of the plate portion 41 so as to protrude.
- the slider 34 is made of a metal having spring properties, and has a push nut portion 34a, a caulking hole 34b, and a notch 34c.
- the push nut portion 34a of the slider 34 is press-fitted into the push nut press-fit portion 44 of the rotor 40, and the heat caulking portion 45 of the rotor 40 is inserted into the caulking hole 34b, thereby performing the heat caulking, whereby the slider 34 is moved to the rotor 40. Attached to and fixed.
- the guide portion 46 of the rotor 40 and the notch 34c of the slider 34 corresponding to the guide portion 46 function as a guide when the slider 34 is assembled.
- the torsion coil spring 35 is inserted into the rotary shaft 33 and accommodated in a space in the pair of spring guides 42 and 43 of the rotor 40.
- the pair of spring guides 42, 43 surround the torsion coil spring 35 along the outer diameter of the torsion coil spring 35, so that the torsion coil spring 35 is held in contact with the pair of spring guides 42, 43.
- the rotary shaft 33 is inserted into the hole 31a of the bearing 31 which is insert-molded in the case 20, and is pivotally supported.
- a lip seal 36 is disposed outside the bearing 31 in the cylindrical portion 24 of the case 20, and a washer 37 and an E ring 38 that restrict the movement of the lip seal 36 are disposed.
- the E-ring 38 is fitted into an E-ring insertion groove 33 c provided on the rotating shaft 33.
- the front side of the case 20 is sealed with a lip seal 36.
- a substrate 50 is attached to the back side opening of the base 21 of the case 20.
- the substrate 50 includes an annular portion 51 and a protruding portion 52 protruding in a square shape from a part of the outer periphery thereof.
- a pair of arcuate resistor patterns 53, 54 are formed concentrically on the annular portion 51, and are connected to both ends of each of the resistor patterns 53, 54 and protrude through the annular portion 51.
- Conductor patterns 55 to 57 reaching the tip of the portion 52 are formed.
- the resistor patterns 53 and 54 are formed, for example, by printing and baking a resin paste mixed with carbon particles, and the conductor patterns 55 to 57 are formed by printing and baking a silver paste.
- Terminal insertion holes 58 are formed at the tips of the respective conductor patterns 55 to 57 through the substrate 50, and terminals 61 are caulked and attached to these terminal insertion holes 58, respectively.
- the caulking portion 61a of the terminal 61 is shown as a shape after caulking.
- the substrate 50 is press-fitted into the base body 21 of the case 20 and is abutted against the abutting portion 21 a provided in the base body 21 to be accommodated. As a result, the slider 34 attached to the rotor 40 is pressed against the resistor patterns 53 and 54. A ring-shaped portion 47 that protrudes from the back side of the plate portion 41 of the rotor 40 so as to surround the shaft 33 b is positioned in the opening 59 of the substrate 50.
- a cover 62 is further attached to the back side opening of the base 21 of the case 20.
- the cover 62 is fixed by heat caulking a heat caulking portion 21 b provided in the base 21 of the case 20.
- a bearing hole 62a for bearing a shaft 33b formed at the tip of the rotary shaft 33 is formed on the inner surface of the cover 62, and the shaft 33b is supported by the bearing hole 62a.
- an adhesive 63 is applied and filled around the cover 62 attached to the case 20, thereby sealing the back side of the case 20.
- a space is provided in a portion where the terminal 61 is located inside the case 20, and the periphery of the terminal 61 and the periphery of the caulking portion 61a are filled with the adhesive 63 as shown in FIG. 5B.
- the terminal 61 is firmly fixed, and migration between the terminals 61 can be prevented.
- the terminal 61 is made of, for example, carbon steel plated with tin, the growth of tin-plated whiskers can be prevented.
- Both end portions 35a, 35b of the torsion coil spring 35, both end surfaces 43a, 43b of the spring guide 43, and both end surfaces 25a, 25b of the spring receiver 25 are in contact with each other by point contact.
- the ends 35a and 35b of the torsion coil spring 35 are point-contacted with the end surfaces 25a and 25b of the spring receiver 25, respectively, between the end portions 35a and 25a, and between the end portions 35b and 25b.
- a wedge-shaped space that extends toward the center of the rotor 40 is formed between them.
- the end surfaces 43a and 43b of the spring guide 43 are in point contact with the end portions 35a and 35b of the torsion coil spring 35 at the inner peripheral corners, respectively, and between the end portions 35a and the end surfaces 43a and the end portions 35b.
- a wedge-shaped space is formed between the end surface 43b and extends toward the outer periphery of the rotor 40.
- both end surfaces 43a and 43b of the spring guide 43 and both end surfaces 25a and 25b of the spring receiver 25 are in point contact with the both end portions 35a and 35b of the torsion coil spring 35, the torsion coil spring 35 is provided. Both end portions 35a and 35b of the torsion coil spring 35 are easy to bend. Therefore, even if the both end surfaces 43a and 43b of the spring guide 43 and the both end surfaces 25a and 25b of the spring receiver 25 are not aligned in a neutral state due to dimensional tolerances or the like.
- Both end portions 35a and 35b are bent so that both end portions 35a and 35b of the torsion coil spring 35 are in good elastic contact with both the spring guide 43 and the spring receiver 25 so that the rotor 40 and the rotating shaft 33 are not loose. be able to.
- both ends 43a and 43b of the spring guide 43 and both ends 25a and 25b of the spring receiver 25 are formed so that a wedge-shaped space is formed between the ends 35a and 35b of the torsion coil spring 35.
- a required inclination that is, an inclined surface, but may be a curved surface, for example.
- FIG. 9A and 9B show a state in which the rotating shaft 33 is rotated counterclockwise and clockwise, respectively, and the spring guide 43 of the rotor 40 makes the end portion 35a of the torsion coil spring 35 elastic in FIG. 9A. 9B, the end portion 35b is pressed against its elasticity.
- the slider 34 slides on the resistor patterns 53 and 54 of the substrate 50, and a desired output signal can be obtained from the terminal 61.
- the rotational force of the rotating shaft 33 is released, the rotor 40 and the rotating shaft 33 return to the original neutral position shown in FIG. 8A by the elastic restoring force of the torsion coil spring 35.
- the play of the rotating shaft 33 can be prevented at the neutral position. Further, since the torsion coil spring 35 is held in contact with the pair of spring guides 42 and 43 of the rotor 40, the axis of the spring does not tilt and unexpected deformation does not occur. Rotational performance can be obtained.
- this potentiometer is used, for example, for detecting the amount of accelerator depression in an electric cart, a scooter, or the like.
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Abstract
Provided is a potentiometer wherein a substrate (50) on which resistance patterns (53, 54) are formed, a rotor (40) to which a sliding element is fixed, and a torsion coil spring (35) are housed in a case (20), and wherein a rotation shaft (33) which is inserted through the torsion coil spring (35) and is connected to the rotor (40) protrudes from the case (20). In this potentiometer, the rotor (40) is equipped with a pair of spring guides (42, 43) which each partially enclose, and are in contact with, the circular cross section torsion coil spring (35). It is configured in such a way that two ends (35a, 35b) which are extended in radial directions of the torsion coil spring (35) are in elastic contact, respectively, with the two circumferential ends (43a, 43b) of the spring guide 43 and with two circumferential ends of a spring shoe (25) which are installed in such a way as to protrude from the inner circumferential surface of the case (20), and that the two ends (43a, 43b) of the spring guide 43 and the two ends (25a, 25b) of the spring shoe (25) are in point contact, respectively, with the two ends (35a, 35b) of the torsion coil spring (35). In this potentiometer equipped with an automatic return mechanism, it is possible to prevent rattle of the rotation shaft (33) in the neutral position.
Description
この発明は各種機器類の位置検出に利用される、回転軸の自動復帰機構を備えたポテンショメータに関する。
The present invention relates to a potentiometer equipped with an automatic return mechanism for a rotating shaft, which is used for detecting the position of various devices.
図1はこの種のポテンショメータの従来例として、特許文献1に記載されているポテンショメータの分解斜視図を示したものである。
FIG. 1 shows an exploded perspective view of a potentiometer described in Patent Document 1 as a conventional example of this type of potentiometer.
図1において、11は摺動子受であり、その底板11aの中央部にはボス11bが突設され、さらに軸11cが中央部から上方、下方に向けて形成されている。底板11aの外周には所定の角度を保って一対の規制壁11d,11eが立設されている。
In FIG. 1, reference numeral 11 denotes a slider receiver. A boss 11b projects from the center of the bottom plate 11a, and a shaft 11c is formed upward and downward from the center. A pair of regulating walls 11d and 11e are erected on the outer periphery of the bottom plate 11a while maintaining a predetermined angle.
12はボス11bを取り巻き、複数ターンの積層部12aと、解放端に上部折曲部12bと下部折曲部12cを有する捩りコイルばねであり、13は摺動子受11を収納するケースで、ケース13は切欠部13aを有し、切欠部13aの両側縁はばね受13b,13cとなっている。
12 is a torsion coil spring that surrounds the boss 11b, and has a multi-turn laminated portion 12a, and an upper bent portion 12b and a lower bent portion 12c at the open end, and 13 is a case that houses the slider receiver 11. The case 13 has a notch 13a, and both side edges of the notch 13a are spring receivers 13b and 13c.
14は摺動子受11の下面に固定される摺動子であり、15はケース13の開放面に固定される絶縁基板である。絶縁基板15の上面には摺動子14が摺動する抵抗体パターン15aが形成されている。
14 is a slider fixed to the lower surface of the slider receiver 11, and 15 is an insulating substrate fixed to the open surface of the case 13. A resistor pattern 15 a on which the slider 14 slides is formed on the upper surface of the insulating substrate 15.
摺動子受11の上方の軸11cはケース13の孔13dに支承され、下方の軸11cは絶縁基板15の孔15bに支承される。捩りコイルばね12の上部折曲部12bは図2に示すようにばね受13b及び規制壁11dに弾圧係止され、下部折曲部12cはばね受13c及び規制壁11eに弾圧係止される。
The upper shaft 11 c of the slider receiver 11 is supported by the hole 13 d of the case 13, and the lower shaft 11 c is supported by the hole 15 b of the insulating substrate 15. As shown in FIG. 2, the upper bent portion 12b of the torsion coil spring 12 is elastically locked to the spring receiver 13b and the restriction wall 11d, and the lower bent portion 12c is elastically locked to the spring receiver 13c and the restriction wall 11e.
このポテンショメータでは図2の静止状態から軸11cを反時計方向に回転すると、図3に示すように摺動子受11の左方の規制壁11eが捩りコイルばね12の下部折曲部12cを捩りコイルばね12の弾性に抗して反時計方向に押圧し、捩りコイルばね12の上部折曲部12bはケース13のばね受13bに係止されたままで、規制壁11dが反時計方向に回転する。その間に摺動子14が抵抗体パターン15a上を反時計方向に摺動し、抵抗値変化によって所望の出力信号が得られるものとなっている。
ここで、軸11cの回転力を取り去ると、捩りコイルばね12の弾性復元力により下部折曲部12cは時計方向に押圧され、摺動子受11及び捩りコイルばね12は図2の元の静止状態に復帰する。 In this potentiometer, when theshaft 11c is rotated counterclockwise from the stationary state of FIG. 2, the left regulating wall 11e of the slider receiver 11 twists the lower bent portion 12c of the torsion coil spring 12 as shown in FIG. The spring 12 is pressed counterclockwise against the elasticity of the coil spring 12, and the upper bent portion 12b of the torsion coil spring 12 remains engaged with the spring receiver 13b of the case 13, and the regulating wall 11d rotates counterclockwise. . Meanwhile, the slider 14 slides counterclockwise on the resistor pattern 15a, and a desired output signal can be obtained by changing the resistance value.
Here, when the rotational force of theshaft 11c is removed, the lower bent portion 12c is pressed clockwise by the elastic restoring force of the torsion coil spring 12, and the slider receiver 11 and the torsion coil spring 12 are restored to the original stationary state shown in FIG. Return to the state.
ここで、軸11cの回転力を取り去ると、捩りコイルばね12の弾性復元力により下部折曲部12cは時計方向に押圧され、摺動子受11及び捩りコイルばね12は図2の元の静止状態に復帰する。 In this potentiometer, when the
Here, when the rotational force of the
同様に、図2の静止状態から軸11cを時計方向に回転すると、摺動子受11の右方の規制壁11dが捩りコイルばね12の上部折曲部12bを押圧し、捩りコイルばね12の下部折曲部12cはケース13のばね受13cに係止されたままで、規制壁11eが時計方向に回転する。これにより、摺動子14が抵抗体パターン15a上を時計方向に摺動して所望の出力信号が得られるものとなっている。
Similarly, when the shaft 11c is rotated clockwise from the stationary state of FIG. 2, the right restriction wall 11d of the slider receiver 11 presses the upper bent portion 12b of the torsion coil spring 12, and the torsion coil spring 12 While the lower bent portion 12c remains locked to the spring receiver 13c of the case 13, the regulating wall 11e rotates in the clockwise direction. Thereby, the slider 14 slides clockwise on the resistor pattern 15a, and a desired output signal is obtained.
ところで、上記のような構成とされたポテンショメータでは、摺動子受11に設けられた規制壁11d,11eの各端面及びケース13に設けられたばね受13b,13cの各端面はいずれも平面を構成しているため、捩りコイルばね12の上部折曲部12bや下部折曲部12cと、それら規制壁11d,11e、ばね受13b,13cとの接触は基本的に線接触となる。
By the way, in the potentiometer configured as described above, the end surfaces of the regulating walls 11d and 11e provided on the slider receiver 11 and the end surfaces of the spring receivers 13b and 13c provided on the case 13 are both flat. Therefore, the contact between the upper bent portion 12b and the lower bent portion 12c of the torsion coil spring 12 and the restriction walls 11d and 11e and the spring receivers 13b and 13c is basically a line contact.
一方、規制壁11d,11eの端面とばね受13b,13cの端面とは寸法公差等により例えば図2の静止状態(中立位置)で面が確実に揃わないことがあり、つまり一対の規制壁11d,11e間の間隔が一対のばね受13b,13c間の間隔より広いといった状態やあるいはその逆の状態が生じうる。
On the other hand, the end surfaces of the regulating walls 11d and 11e and the end surfaces of the spring receivers 13b and 13c may not be aligned with each other in a stationary state (neutral position) as shown in FIG. , 11e may be wider than the gap between the pair of spring receivers 13b, 13c, or vice versa.
一対の規制壁11d,11e間の間隔が一対のばね受13b,13c間の間隔より広くなっている場合、捩りコイルばね12の上部折曲部12b及び下部折曲部12cは図2の中立位置ではばね受13b,13cにのみ弾接し、規制壁11d,11eには接触しないといった状態が発生し、また、これとは逆に一対の規制壁11d,11e間の間隔が一対のばね受13b,13c間の間隔より狭くなっている場合、上部折曲部12b及び下部折曲部12cは規制壁11d,11eにのみ弾接し、ばね受13b,13cには接触しないといった状態が発生する。
When the interval between the pair of regulating walls 11d and 11e is wider than the interval between the pair of spring receivers 13b and 13c, the upper bent portion 12b and the lower bent portion 12c of the torsion coil spring 12 are in the neutral position in FIG. Then, there occurs a state in which only the spring receivers 13b and 13c are elastically contacted but not in contact with the regulating walls 11d and 11e, and conversely, the interval between the pair of regulating walls 11d and 11e is a pair of spring receivers 13b and 13e. When the distance is smaller than the distance between 13c, the upper bent portion 12b and the lower bent portion 12c are in elastic contact with only the regulating walls 11d and 11e, and are not in contact with the spring receivers 13b and 13c.
このような状態は上部折曲部12bや下部折曲部12cと、規制壁11d,11e、ばね受13b,13cとが線接触する構成となっているため、線接触によって上部折曲部12b、下部折曲部12cの延伸方向の形状が規定され、つまり撓みが制限されることに起因する。そして、このような状態が発生すると、軸11cの回転が中立位置で完全に規制されず、ガタが生じることになり、このようなガタは検出精度の低下を招くことになる。
In such a state, the upper bent portion 12b and the lower bent portion 12c are in line contact with the regulating walls 11d and 11e and the spring receivers 13b and 13c. This is because the shape of the lower bent portion 12c in the extending direction is defined, that is, the bending is limited. When such a state occurs, the rotation of the shaft 11c is not completely regulated at the neutral position, and play occurs, and such play causes a decrease in detection accuracy.
この発明の目的は上述した問題に鑑み、中立位置においても回転軸にガタが生じないようにし、検出精度に優れたポテンショメータを提供することにある。
An object of the present invention is to provide a potentiometer having excellent detection accuracy by preventing backlash from occurring in a rotating shaft even in a neutral position in view of the above-described problems.
この発明によれば、ケース内に、抵抗体パターンが形成された基板と、抵抗体パターンと摺接する摺動子が固定されたロータと、捩りコイルばねとが収容され、捩りコイルばねを挿通してロータと結合された回転軸がケースから突出されているポテンショメータにおいて、ロータは捩りコイルばねを囲み、捩りコイルばねの外径に沿う断面円弧状の一対のばねガイドを備え、捩りコイルばねの径方向に導出された両端部は一対のばねガイドの一方のばねガイドの周方向両端面及びケースの内周面に突設されたばね受の周方向両端面に弾接され、一方のばねガイドの周方向両端面及びばね受の周方向両端面はそれぞれ捩りコイルばねの両端部と点接触する形状とされる。
According to this invention, the substrate on which the resistor pattern is formed, the rotor to which the slider that is in sliding contact with the resistor pattern is fixed, and the torsion coil spring are accommodated in the case, and the torsion coil spring is inserted. In the potentiometer in which the rotating shaft coupled to the rotor protrudes from the case, the rotor surrounds the torsion coil spring and includes a pair of spring guides having a circular arc shape along the outer diameter of the torsion coil spring. Both end portions led out in the direction are elastically contacted with both end surfaces in the circumferential direction of one spring guide of the pair of spring guides and both end surfaces in the circumferential direction of spring receivers protruding from the inner peripheral surface of the case. Both end surfaces in the direction and both end surfaces in the circumferential direction of the spring receiver are formed in point contact with both ends of the torsion coil spring.
この発明では、回転軸を自動復帰させる捩りコイルばねの両端部はロータのばねガイドの両端面及びケースのばね受の両端面に点接触する構造となっている。従って、例えば寸法公差等により中立位置でばねガイドの両端面とばね受の両端面とが揃っていなくても、従来の線接触構造と異なり、捩りコイルばねの両端部の形状が規定されず、撓みを期待することができ、つまり両端部が撓むことによってロータのばねガイドとケースのばね受の双方に捩りコイルばねの両端部が良好に弾接する状態を得ることができる。これにより、この発明によれば、中立位置におけるロータ及び回転軸のガタを防止することができ、その点で検出精度に優れたポテンショメータを得ることができる。
In the present invention, both end portions of the torsion coil spring for automatically returning the rotating shaft are in point contact with both end surfaces of the spring guide of the rotor and both end surfaces of the spring receiver of the case. Therefore, even if the both ends of the spring guide and the both ends of the spring receiver are not aligned at the neutral position due to, for example, dimensional tolerance, the shape of the ends of the torsion coil spring is not defined unlike the conventional line contact structure, Bending can be expected, that is, both ends of the torsion coil spring can be in good elastic contact with both the spring guide of the rotor and the spring receiver of the case. Thereby, according to this invention, the backlash of the rotor and the rotating shaft in the neutral position can be prevented, and a potentiometer excellent in detection accuracy can be obtained in this respect.
この発明の実施形態を図面を参照して実施例により説明する。
Embodiments of the present invention will be described by way of example with reference to the drawings.
図4A,4Bはこの発明によるポテンショメータの一実施例の外観を示したものであり、図5A,5Bはその断面構造を示したものである。また、図6は各部に分解して示したものである。
4A and 4B show the appearance of an embodiment of the potentiometer according to the present invention, and FIGS. 5A and 5B show the cross-sectional structure thereof. FIG. 6 is an exploded view of each part.
ケース20は円筒状の基体21を有し、基体21の背面側にはその外周面から方形状板部22が突出形成され、基体21の前面側にはその外周面から一対の取り付け部23が互いに逆向きにフランジ状に大きく突出形成されている。また、基体21の前面には段付きの円筒部24が突出形成されている。
ケース20の円筒部24には軸受31が収容配置されており、また一対の取り付け部23の各スリーブ穴23aには金属製のスリーブ32が収容配置されている。ケース20及び軸受31はそれぞれ合成樹脂製とされ、この例では軸受31及びスリーブ32はケース20にインサート成形されている。なお、ケース20と軸受31は共に合成樹脂製とされるが、ケース20には高剛性で難燃性に優れた樹脂を用い、軸受31には耐摩耗性に優れた樹脂を用いる。 Thecase 20 has a cylindrical base 21, and a rectangular plate portion 22 is formed on the back side of the base 21 so as to protrude from the outer peripheral surface. Largely projecting and formed in a flange shape in opposite directions. A stepped cylindrical portion 24 is formed on the front surface of the base 21 so as to protrude.
Abearing 31 is accommodated in the cylindrical portion 24 of the case 20, and a metal sleeve 32 is accommodated in each sleeve hole 23 a of the pair of attachment portions 23. The case 20 and the bearing 31 are each made of synthetic resin. In this example, the bearing 31 and the sleeve 32 are insert-molded in the case 20. Both the case 20 and the bearing 31 are made of synthetic resin, but the case 20 is made of a resin having high rigidity and excellent flame retardancy, and the bearing 31 is made of a resin having excellent wear resistance.
ケース20の円筒部24には軸受31が収容配置されており、また一対の取り付け部23の各スリーブ穴23aには金属製のスリーブ32が収容配置されている。ケース20及び軸受31はそれぞれ合成樹脂製とされ、この例では軸受31及びスリーブ32はケース20にインサート成形されている。なお、ケース20と軸受31は共に合成樹脂製とされるが、ケース20には高剛性で難燃性に優れた樹脂を用い、軸受31には耐摩耗性に優れた樹脂を用いる。 The
A
ロータ40は板部41と、その板部41の一面に突出形成された一対のばねガイド42,43とを有し、合成樹脂製とされる。一対のばねガイド42,43はそれぞれ断面円弧状をなし、それら円弧は同一円周上に位置されている。板部41は円板状をなし、一方のばねガイド43の外周側に位置する部分は切り欠かれた形状とされている。
The rotor 40 has a plate portion 41 and a pair of spring guides 42 and 43 formed to protrude from one surface of the plate portion 41, and is made of synthetic resin. The pair of spring guides 42 and 43 each have an arc shape in cross section, and these arcs are positioned on the same circumference. The plate portion 41 has a disc shape, and a portion located on the outer peripheral side of one spring guide 43 is cut out.
回転軸33は金属製とされ、その一端には小判形部33aが形成され、さらに小判形部33aの先端面に小径の軸33bが突出形成されている。回転軸33はその小判形部33aがロータ40の板部41にインサート成形されてロータ40と一体化され、ばねガイド42,43のなす円弧の中心に位置される。なお、小判形部33aの先端面に形成されている軸33bはロータ40の板部41の背面側より突出される。
The rotary shaft 33 is made of metal, and an oval portion 33a is formed at one end thereof, and a small-diameter shaft 33b is protruded from the tip surface of the oval portion 33a. The rotary shaft 33 is insert-molded in the plate portion 41 of the rotor 40 and the rotor shaft 40 is integrated with the rotor 40 and positioned at the center of the arc formed by the spring guides 42 and 43. The shaft 33b formed on the front end surface of the oval shaped portion 33a protrudes from the back side of the plate portion 41 of the rotor 40.
ロータ40の板部41の背面側には摺動子34が取り付けられる。板部41の背面には図7に示したようにプッシュナット圧入部44、熱かしめ部45及びガイド部46が突出形成されている。摺動子34はばね性を有する金属製とされ、プッシュナット部34aとかしめ穴34bと切り欠き34cとが形成されている。摺動子34のプッシュナット部34aをロータ40のプッシュナット圧入部44に圧入し、かしめ穴34bにロータ40の熱かしめ部45を挿通させ、熱かしめを行うことによって摺動子34がロータ40に取り付け固定される。なお、ロータ40のガイド部46及びそのガイド部46と対応する摺動子34の切り欠き34cは摺動子34の組み込み時のガイドとして機能する。
A slider 34 is attached to the back side of the plate portion 41 of the rotor 40. As shown in FIG. 7, a push nut press-fitting portion 44, a heat caulking portion 45, and a guide portion 46 are formed on the back surface of the plate portion 41 so as to protrude. The slider 34 is made of a metal having spring properties, and has a push nut portion 34a, a caulking hole 34b, and a notch 34c. The push nut portion 34a of the slider 34 is press-fitted into the push nut press-fit portion 44 of the rotor 40, and the heat caulking portion 45 of the rotor 40 is inserted into the caulking hole 34b, thereby performing the heat caulking, whereby the slider 34 is moved to the rotor 40. Attached to and fixed. The guide portion 46 of the rotor 40 and the notch 34c of the slider 34 corresponding to the guide portion 46 function as a guide when the slider 34 is assembled.
捩りコイルばね35は回転軸33に挿通されてロータ40の一対のばねガイド42,43内の空間に収容される。一対のばねガイド42,43は捩りコイルばね35の外径に沿って捩りコイルばね35を囲み、これにより捩りコイルばね35は一対のばねガイド42,43に外接して保持される。
The torsion coil spring 35 is inserted into the rotary shaft 33 and accommodated in a space in the pair of spring guides 42 and 43 of the rotor 40. The pair of spring guides 42, 43 surround the torsion coil spring 35 along the outer diameter of the torsion coil spring 35, so that the torsion coil spring 35 is held in contact with the pair of spring guides 42, 43.
回転軸33はケース20にインサート成形されている軸受31の穴31aに挿通されて軸支される。ケース20の円筒部24において軸受31の外側にはリップシール36が配置され、さらにリップシール36の移動を規制するワッシャ37、Eリング38が配置される。Eリング38は回転軸33に設けられているEリング挿入溝33cに嵌め込まれる。ケース20の前面側はリップシール36によって封止される。
The rotary shaft 33 is inserted into the hole 31a of the bearing 31 which is insert-molded in the case 20, and is pivotally supported. A lip seal 36 is disposed outside the bearing 31 in the cylindrical portion 24 of the case 20, and a washer 37 and an E ring 38 that restrict the movement of the lip seal 36 are disposed. The E-ring 38 is fitted into an E-ring insertion groove 33 c provided on the rotating shaft 33. The front side of the case 20 is sealed with a lip seal 36.
ケース20の基体21の背面側開口部には基板50が取り付けられる。基板50は円環状部51とその外周の一部から方形状に突出された突出部52とよりなる。円環状部51には円弧状をなす一対の抵抗体パターン53,54が同心状に形成されており、さらにこれら各抵抗体パターン53,54の両端と接続され、円環状部51を通って突出部52の先端に至る導体パターン55~57が形成されている。抵抗体パターン53,54は例えばカーボン粒子を混入した樹脂ペーストを印刷、焼成することによって形成され、導体パターン55~57は銀ペーストを印刷、焼成することによって形成される。
A substrate 50 is attached to the back side opening of the base 21 of the case 20. The substrate 50 includes an annular portion 51 and a protruding portion 52 protruding in a square shape from a part of the outer periphery thereof. A pair of arcuate resistor patterns 53, 54 are formed concentrically on the annular portion 51, and are connected to both ends of each of the resistor patterns 53, 54 and protrude through the annular portion 51. Conductor patterns 55 to 57 reaching the tip of the portion 52 are formed. The resistor patterns 53 and 54 are formed, for example, by printing and baking a resin paste mixed with carbon particles, and the conductor patterns 55 to 57 are formed by printing and baking a silver paste.
各導体パターン55~57の先端には基板50を貫通して端子挿入穴58がそれぞれ形成されており、これら端子挿入穴58には端子61がそれぞれかしめられて取り付けられる。なお、図6では端子61のかしめ部61aはかしめられた後の形状として示している。
Terminal insertion holes 58 are formed at the tips of the respective conductor patterns 55 to 57 through the substrate 50, and terminals 61 are caulked and attached to these terminal insertion holes 58, respectively. In FIG. 6, the caulking portion 61a of the terminal 61 is shown as a shape after caulking.
基板50はケース20の基体21内に圧入され、基体21内に設けられている突き当て部21aに突き当てられて収容される。これにより、ロータ40に取り付けられている摺動子34は抵抗体パターン53,54と圧接される。なお、ロータ40の板部41の背面側に軸33bを囲んで突出形成されているリング状部47は基板50の開口59内に位置される。
The substrate 50 is press-fitted into the base body 21 of the case 20 and is abutted against the abutting portion 21 a provided in the base body 21 to be accommodated. As a result, the slider 34 attached to the rotor 40 is pressed against the resistor patterns 53 and 54. A ring-shaped portion 47 that protrudes from the back side of the plate portion 41 of the rotor 40 so as to surround the shaft 33 b is positioned in the opening 59 of the substrate 50.
ケース20の基体21の背面側開口部にはさらにカバー62が取り付けられる。カバー62はケース20の基体21内に設けられている熱かしめ部21bを熱かしめすることによって固定される。カバー62の内面には回転軸33の先端に形成されている軸33bを軸受する軸受穴62aが形成されており、軸33bはこの軸受穴62aに軸支される。
ケース20に取り付けられたカバー62の周囲には図5A,5Bに示したように接着剤63が塗布・充填され、これによりケース20の背面側が封止される。また、この例ではケース20内部において端子61が位置する部分に空間部を設け、端子61の周囲及びかしめ部61aの周囲にも図5Bに示したように接着剤63を充填している。これにより、端子61は堅固に固定され、また端子61間のマイグレーションを防止することができるものとなっている。加えて、端子61を例えば炭素鋼に錫めっきを施した構成とした場合には錫めっきのウイスカの成長を阻止することができる。 Acover 62 is further attached to the back side opening of the base 21 of the case 20. The cover 62 is fixed by heat caulking a heat caulking portion 21 b provided in the base 21 of the case 20. A bearing hole 62a for bearing a shaft 33b formed at the tip of the rotary shaft 33 is formed on the inner surface of the cover 62, and the shaft 33b is supported by the bearing hole 62a.
As shown in FIGS. 5A and 5B, an adhesive 63 is applied and filled around thecover 62 attached to the case 20, thereby sealing the back side of the case 20. Further, in this example, a space is provided in a portion where the terminal 61 is located inside the case 20, and the periphery of the terminal 61 and the periphery of the caulking portion 61a are filled with the adhesive 63 as shown in FIG. 5B. Thereby, the terminal 61 is firmly fixed, and migration between the terminals 61 can be prevented. In addition, when the terminal 61 is made of, for example, carbon steel plated with tin, the growth of tin-plated whiskers can be prevented.
ケース20に取り付けられたカバー62の周囲には図5A,5Bに示したように接着剤63が塗布・充填され、これによりケース20の背面側が封止される。また、この例ではケース20内部において端子61が位置する部分に空間部を設け、端子61の周囲及びかしめ部61aの周囲にも図5Bに示したように接着剤63を充填している。これにより、端子61は堅固に固定され、また端子61間のマイグレーションを防止することができるものとなっている。加えて、端子61を例えば炭素鋼に錫めっきを施した構成とした場合には錫めっきのウイスカの成長を阻止することができる。 A
As shown in FIGS. 5A and 5B, an adhesive 63 is applied and filled around the
次に、捩りコイルばね35の径方向に導出されている両端部35a,35bの、ケース20内における位置・係止状態について図8A,8Bを参照して説明する。
Next, the position / locking state in the case 20 of both end portions 35a and 35b led out in the radial direction of the torsion coil spring 35 will be described with reference to FIGS. 8A and 8B.
図8A,8Bは回転軸33が中立位置に位置している状態を示したものであり、捩りコイルばね35の両端部35a,35bはロータ40のばねガイド43の周方向両端面43a,43bに弾接され、さらにケース20の内周面に円弧状に突設されているばね受25の周方向両端面25a,25bに弾接されている。
8A and 8B show a state in which the rotary shaft 33 is positioned at the neutral position, and both end portions 35a and 35b of the torsion coil spring 35 are connected to the circumferential end surfaces 43a and 43b of the spring guide 43 of the rotor 40. It is elastically contacted, and is further elastically contacted with both circumferential end surfaces 25a, 25b of the spring receiver 25 that protrudes in an arc shape on the inner peripheral surface of the case 20.
捩りコイルばね35の両端部35a,35bとばねガイド43の両端面43a,43b及びばね受25の両端面25a,25bとはいずれも点接触で接触する構造とされている。この例では捩りコイルばね35の端部35a,35bはそれぞれその先端がばね受25の端面25a,25bと点接触しており、端部35aと端面25aとの間及び端部35bと端面25bとの間にはそれぞれロータ40の中心に向かって広がるくさび状の空間が構成されている。一方、ばねガイド43の端面43a,43bはその内周側角部において捩りコイルばね35の端部35a,35bとそれぞれ点接触しており、端部35aと端面43aとの間及び端部35bと端面43bとの間にはそれぞれロータ40の外周側に向かって広がるくさび状の空間が構成されている。
Both end portions 35a, 35b of the torsion coil spring 35, both end surfaces 43a, 43b of the spring guide 43, and both end surfaces 25a, 25b of the spring receiver 25 are in contact with each other by point contact. In this example, the ends 35a and 35b of the torsion coil spring 35 are point-contacted with the end surfaces 25a and 25b of the spring receiver 25, respectively, between the end portions 35a and 25a, and between the end portions 35b and 25b. A wedge-shaped space that extends toward the center of the rotor 40 is formed between them. On the other hand, the end surfaces 43a and 43b of the spring guide 43 are in point contact with the end portions 35a and 35b of the torsion coil spring 35 at the inner peripheral corners, respectively, and between the end portions 35a and the end surfaces 43a and the end portions 35b. A wedge-shaped space is formed between the end surface 43b and extends toward the outer periphery of the rotor 40.
このように、ばねガイド43の両端面43a,43b及びばね受25の両端面25a,25bは捩りコイルばね35の両端部35a,35bとそれぞれ点接触する形状とされているため、捩りコイルばね35の両端部35a,35bは撓みやすく、よって寸法公差等により中立状態でばねガイド43の両端面43a,43bとばね受25の両端面25a,25bとが揃っていなくても、捩りコイルばね35の両端部35a,35bが撓むことによってばねガイド43及びばね受25の双方に捩りコイルばね35の両端部35a,35bが良好に弾接し、ロータ40及び回転軸33にガタが生じないものとすることができる。
Thus, since both end surfaces 43a and 43b of the spring guide 43 and both end surfaces 25a and 25b of the spring receiver 25 are in point contact with the both end portions 35a and 35b of the torsion coil spring 35, the torsion coil spring 35 is provided. Both end portions 35a and 35b of the torsion coil spring 35 are easy to bend. Therefore, even if the both end surfaces 43a and 43b of the spring guide 43 and the both end surfaces 25a and 25b of the spring receiver 25 are not aligned in a neutral state due to dimensional tolerances or the like. Both end portions 35a and 35b are bent so that both end portions 35a and 35b of the torsion coil spring 35 are in good elastic contact with both the spring guide 43 and the spring receiver 25 so that the rotor 40 and the rotating shaft 33 are not loose. be able to.
なお、この例では捩りコイルばね35の端部35a,35bとの間にくさび状の空間が構成されるように、ばねガイド43の両端面43a,43b及びばね受25の両端面25a,25bには所要の傾斜を設け、つまり傾斜面としているが、例えば曲面としてもよい。
In this example, both ends 43a and 43b of the spring guide 43 and both ends 25a and 25b of the spring receiver 25 are formed so that a wedge-shaped space is formed between the ends 35a and 35b of the torsion coil spring 35. Is provided with a required inclination, that is, an inclined surface, but may be a curved surface, for example.
図9A,9Bはそれぞれ回転軸33が反時計方向及び時計方向に回転された状態を示したものであり、ロータ40のばねガイド43は図9Aでは捩りコイルばね35の端部35aをその弾性に抗して押圧し、図9Bでは端部35bをその弾性に抗して押圧する。ロータ40が回転することにより摺動子34は基板50の抵抗体パターン53,54上を摺動し、所望の出力信号を端子61より得ることができる。回転軸33の回転力を解除すると、捩りコイルばね35の弾性復元力により、ロータ40及び回転軸33は図8Aに示した元の中立位置に復帰する。
9A and 9B show a state in which the rotating shaft 33 is rotated counterclockwise and clockwise, respectively, and the spring guide 43 of the rotor 40 makes the end portion 35a of the torsion coil spring 35 elastic in FIG. 9A. 9B, the end portion 35b is pressed against its elasticity. As the rotor 40 rotates, the slider 34 slides on the resistor patterns 53 and 54 of the substrate 50, and a desired output signal can be obtained from the terminal 61. When the rotational force of the rotating shaft 33 is released, the rotor 40 and the rotating shaft 33 return to the original neutral position shown in FIG. 8A by the elastic restoring force of the torsion coil spring 35.
以上説明したように、この例によれば中立位置において回転軸33のガタ発生を防止することができる。また、捩りコイルばね35はロータ40の一対のばねガイド42,43に外接して保持されているため、ばねの軸が傾くことはなく、予期せぬ変形が発生することもなく、よって良好な回転性能を得ることができる。
As described above, according to this example, the play of the rotating shaft 33 can be prevented at the neutral position. Further, since the torsion coil spring 35 is held in contact with the pair of spring guides 42 and 43 of the rotor 40, the axis of the spring does not tilt and unexpected deformation does not occur. Rotational performance can be obtained.
なお、このポテンショメータは例えば電動カートやスクータ等におけるアクセル踏み込み量の検出等に用いられる。
Note that this potentiometer is used, for example, for detecting the amount of accelerator depression in an electric cart, a scooter, or the like.
Claims (3)
- ケース内に、抵抗体パターンが形成された基板と、前記抵抗体パターンと摺接する摺動子が固定されたロータと、捩りコイルばねとが収容され、前記捩りコイルばねを挿通して前記ロータと結合された回転軸が前記ケースから突出されているポテンショメータであり、
前記ロータは前記捩りコイルばねを囲み、前記捩りコイルばねの外径に沿う断面円弧状の一対のばねガイドを備え、
前記捩りコイルばねの径方向に導出された両端部は前記一対のばねガイドの一方のばねガイドの周方向両端面及び前記ケースの内周面に突設されたばね受の周方向両端面に弾接され、
前記一方のばねガイドの周方向両端面及び前記ばね受の周方向両端面はそれぞれ前記捩りコイルばねの両端部と点接触する形状とされている。 In the case, a substrate on which a resistor pattern is formed, a rotor to which a slider that is in sliding contact with the resistor pattern is fixed, and a torsion coil spring are housed, and the rotor is inserted through the torsion coil spring. A potentiometer with a coupled rotating shaft protruding from the case;
The rotor includes a pair of spring guides that surround the torsion coil spring and have a cross-sectional arc shape along the outer diameter of the torsion coil spring;
Both ends of the torsion coil spring that are led out in the radial direction are elastically contacted with both end surfaces in the circumferential direction of one spring guide of the pair of spring guides and both end surfaces in the circumferential direction of a spring receiver that protrudes from the inner peripheral surface of the case. And
Both end surfaces in the circumferential direction of the one spring guide and both end surfaces in the circumferential direction of the spring receiver are in a shape that makes point contact with both end portions of the torsion coil spring. - 請求項1のポテンショメータにおいて、
前記捩りコイルばねの両端部はそれぞれその先端が前記ばね受の周方向両端面と点接触している。 The potentiometer of claim 1,
Both ends of the torsion coil spring are in point contact with both circumferential end surfaces of the spring receiver. - 請求項1のポテンショメータにおいて、
前記一方のばねガイドの周方向両端面はその内周側角部において前記捩りコイルばねの両端部とそれぞれ点接触している。 The potentiometer of claim 1,
Both end surfaces in the circumferential direction of the one spring guide are in point contact with both end portions of the torsion coil spring at the inner peripheral corners thereof.
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Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201080025352.2A CN102803903B (en) | 2009-06-30 | 2010-04-16 | Pot |
HK13103374.5A HK1176115A1 (en) | 2009-06-30 | 2013-03-19 | Potentiometer |
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JP2009-154817 | 2009-06-30 | ||
JP2009154817A JP5166363B2 (en) | 2009-06-30 | 2009-06-30 | Potentiometer |
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WO2011001733A1 true WO2011001733A1 (en) | 2011-01-06 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP2010/056826 WO2011001733A1 (en) | 2009-06-30 | 2010-04-16 | Potentiometer |
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JP (1) | JP5166363B2 (en) |
CN (1) | CN102803903B (en) |
HK (1) | HK1176115A1 (en) |
TW (1) | TWI470237B (en) |
WO (1) | WO2011001733A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2018092224A1 (en) * | 2016-11-16 | 2018-05-24 | 東京コスモス電機株式会社 | Switch device for variable resistor |
WO2018092225A1 (en) * | 2016-11-16 | 2018-05-24 | 東京コスモス電機株式会社 | Switch device for variable resistor |
ES2728136A1 (en) * | 2018-04-20 | 2019-10-22 | Aragonesa De Componentes Pasivos S A | RETURNABLE CONTROL KNOB (Machine-translation by Google Translate, not legally binding) |
Citations (3)
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US3968338A (en) * | 1974-08-13 | 1976-07-06 | Cts Corporation | Electrical switch control |
JP2533523Y2 (en) * | 1991-09-09 | 1997-04-23 | アルプス電気株式会社 | Rotating electrical parts |
JPH11339598A (en) * | 1998-05-25 | 1999-12-10 | Alps Electric Co Ltd | Composite operation electric part |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
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JP3141647B2 (en) * | 1993-04-15 | 2001-03-05 | 松下電器産業株式会社 | Rotary electronic components |
-
2009
- 2009-06-30 JP JP2009154817A patent/JP5166363B2/en active Active
-
2010
- 2010-04-16 CN CN201080025352.2A patent/CN102803903B/en active Active
- 2010-04-16 WO PCT/JP2010/056826 patent/WO2011001733A1/en active Application Filing
- 2010-04-27 TW TW99113324A patent/TWI470237B/en active
-
2013
- 2013-03-19 HK HK13103374.5A patent/HK1176115A1/en unknown
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3968338A (en) * | 1974-08-13 | 1976-07-06 | Cts Corporation | Electrical switch control |
JP2533523Y2 (en) * | 1991-09-09 | 1997-04-23 | アルプス電気株式会社 | Rotating electrical parts |
JPH11339598A (en) * | 1998-05-25 | 1999-12-10 | Alps Electric Co Ltd | Composite operation electric part |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2018092224A1 (en) * | 2016-11-16 | 2018-05-24 | 東京コスモス電機株式会社 | Switch device for variable resistor |
WO2018092225A1 (en) * | 2016-11-16 | 2018-05-24 | 東京コスモス電機株式会社 | Switch device for variable resistor |
ES2728136A1 (en) * | 2018-04-20 | 2019-10-22 | Aragonesa De Componentes Pasivos S A | RETURNABLE CONTROL KNOB (Machine-translation by Google Translate, not legally binding) |
WO2019202187A1 (en) * | 2018-04-20 | 2019-10-24 | Aragonesa De Componentes Pasivos, S.A. | Reversible controller |
Also Published As
Publication number | Publication date |
---|---|
TW201109679A (en) | 2011-03-16 |
TWI470237B (en) | 2015-01-21 |
JP5166363B2 (en) | 2013-03-21 |
CN102803903B (en) | 2015-09-30 |
JP2011012978A (en) | 2011-01-20 |
CN102803903A (en) | 2012-11-28 |
HK1176115A1 (en) | 2013-07-19 |
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