US3771093A - Multiple stage interlock type variable resistor - Google Patents

Multiple stage interlock type variable resistor Download PDF

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Publication number
US3771093A
US3771093A US00283999A US3771093DA US3771093A US 3771093 A US3771093 A US 3771093A US 00283999 A US00283999 A US 00283999A US 3771093D A US3771093D A US 3771093DA US 3771093 A US3771093 A US 3771093A
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United States
Prior art keywords
slider
resistors
cover
sliders
opening
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US00283999A
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English (en)
Inventor
S Ishikawa
H Takemi
H Komatsu
J Imura
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Alps Alpine Co Ltd
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Alps Electric Co Ltd
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Filing date
Publication date
Application filed by Alps Electric Co Ltd filed Critical Alps Electric Co Ltd
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Publication of US3771093A publication Critical patent/US3771093A/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C10/00—Adjustable resistors
    • H01C10/16—Adjustable resistors including plural resistive elements
    • H01C10/20—Contact structure or movable resistive elements being ganged

Definitions

  • ABSTRACT A cover, surrounding commonly coupled slider for paired resistors actuated by a common actuator, carries at least one hole permitting access to an adjusting mechanism for shifting one slider relative to the other and to overcome interlock error in a multi-stage interlock type variable resistor.
  • the present invention relates to a multiple stage interlock type variable resistor and, more particularly, to a resistor of the rotary or slide type in which the interlock error resulting during assembling of the multiple stage resistor may be readily corrected.
  • the present invention allows ready correction for the interlocking error after assembly and without the necessity of removing the cover by a simple expedient without appreciably increasing the cost of the resistor.
  • FIG. 1 is a perspective view of a multistage variable resistor constituting one embodiment of the present invention.
  • FIG. 2 is a sectional, side elevation of the resistor of FIG. 1.
  • FIG. 3 is a perspective view, partially broken away, showing the essential elements of the front and rear slider supports and the roating shaft supporting the same.
  • FIG. 4 is an enlarged perspective view of portions of the variable resistor of FIG. 1 showing the technique of adjusting the resistor to overcome the interlocking error using a tool T.
  • FIG. 5 is a perspective view, partially broken away, of the resistor of FIG. 1 slightly modified from the illustration of FIG. 3.
  • FIG. 6 is an enlarged, perspective view of the essential parts of the resistor of FIG. 1 in modified form for adjusting the resistor which incorporates the elements of FIG. 5 therein.
  • FIG. 7 is a perspective view of a modified multi-stage variable resistor forming a third embodiment of the present invention.
  • FIG. 8 is a sectional, side elevational view of the resistor of FIG. 7.
  • FIG. 9 is a perspective view of a slide type variable resistor forming another embodiment of thepresent invention.
  • FIG. 10 is an end,sectional elevational view of the variable resistor of FIG. 9.
  • FIG. 11 is an enlarged perspective view of portions of the resistor of FIGS. 9 and 10.
  • FIG. 12 is an enlarged perspective view of portions of the resistor of FIG. 9 illustrating the manner of adjustment for interlocking error.
  • FIGS. 1-6 a rotary type variable resistor is illustrated in FIGS. 1-6 which incorporates the invention in one form.
  • a front stage variable resistor is indicated generally at 1
  • a rear stage vaiable resistor is indicated generally at 2
  • both stages being operated commonly by a rotating shaft 3 which is mounted for rotation within a cover 9 by means of bearing 4.
  • An insulating base plate 1,, for the front stage resistor I supports the bearing 4 and additionally a resistor 5 as well as a conducting plate 6 which are secured thereto in a well known manner.
  • the slider support 1,, FIG. 3 receives projecting, elongated portion 3a of the rotatable shaft 3, the slider support being formed of insulating material.
  • the slider support carries slider 7 which slidably contacts the resistor 5 during rotation of shaft 3 and the conducting plate 6, the slider 7 being fixed to slider support 1,.
  • metal plate 8 is superposed with and enforceably fitted to the front stage slider support 1,,, the metal plate serving as a stop for the rotating shaft as well as an electrical shield between the variable reistors l and 2 of the front and rear stages respectively.
  • a cover 9 which is fixed to the front stage insulating plate 1,, by means of bent tabs 9 is further fixed to the insulating plate 2,, of the rear stage by means of the similar bent over tabs 9
  • a resistor 5 and a conductive plate 6 are fixed to the insulating base plate 2,, of the rear stage by conventional means in similar fashion to the front stage resistor.
  • a slider support 2, of disc form in similar fashion to the slider support 1,, of the front stage, receives the inserted, elongated portion 3,, of rotating shaft 3 in a manner similar to that of the slider support 1,, the slider support 2,, being also formed of an'electrically insulating material.
  • a slider 7 is likewise carried on the slider support 2, and is in contact with resistor 5 in the conducting plate 6 of the rear stage resistor, slider 7 being fixed to slider support 2,.
  • the rear stage slider support 2 is coupled to the rotating shaft by receiving the elongated portion 3,, of the rotating shaft 3, which is non-circular in cross-sectional configuration and being provided with two opposed flattened sides, the opening within the rear stage slider support 2,, conforming closely with the elongated portion 3,, of the rotating shaft such that there is no relative rotation between the rear stage slider support 2,, and shaft 3.
  • the rear stage slider support 2, is carried on'the rotating shaft 3 as is metal plate 1, and the front stage slider support b in such a manner that the three members 2,, l and 8 are pressed against one another.
  • the metal plate 8 and one of the front and rear slider supports (in' this case, rear slider support 2 is forceably fitted onto the elongated shaft.
  • a hole 9, (see FIG. 1) is provided within the cover 9 at a position and in longitudinal alignment with slider support 1,, such that the interlocking error may be regulated and eliminated by rotating slider support 1, slightly on the shaft 3 by the act of causing the tip end of tool T to engage the rotatable slider support 1, and by moving tool T in either of two directions as indicated by the double headed arrow in FIG. 4.
  • the rotatable slider support 1 is formed with peripheral recesses or teeth.
  • both peripheries of the slider supports 1, and 2 are provided with recesses or cut portions as at 1, l and 2, with a two prong tool T, FIG. 6, permitting rotation in either direction.
  • the front and rear stage slider supports 1,, 2, and the metal plate 8 are rotated in unison which also rotates the sliders 7 fixed to the slider supports 1, and 2,.
  • the sliders 7 slide on and in contact with the resistor 5 and conducting plate 6, whereby the resistance values of the front and rear stage variable resistors 1 and 2 are readily varied.
  • the relative position between the slider supports 1, nd 2 may be shifted by inserting the tool T into the hole 9, of the cover 9, causing the tip portion of the tool to engage with at least one of the rotatable slider supports such as rotatable slider support 1,, FIG. 4, and by moving the tool T, a regulation of the interlocking error may be effected externally of the cover without the necessity of disassembling the variable resistor.
  • FIGS. 7 and 8 a modified embodiment of the rotary type variable resistor as illustrated in FIGS. 7 and 8 will be explained, in which in the drawings and in the description the same reference numerals are employed for the same elements as in the previous embodiment.
  • This embodiment has the same construction as that previously described, except that the front and rear variable resistors 1 and 2 are formed by separate covers 9, and 9 and furthergthe front and rear slider supports 1, and 2, and the sliders 7 are accommodated in separate covers 9, and 9 respectively, so that the detailed explanation is necessarily omitted.
  • the embodiment is similar to that previously described except in this case, it is the slider support 2, that is made rotatable slightly on the rotating shaft 3 and triangular teeth are formed on the periphery of the slider support 2, so that the tool T may be engaged therewith easily, and in this case, th e regulatir1g hole' 9 'is provided in cover 9,.
  • FIGS. 9-12 show type variable resistor illustrated in FIGS. 9-12 and again, the same reference numerals are employed to illustrate the parts corresponding to those appearing in the rotary type variable resistors previously described.
  • the numeral 1 designates one of the variable resistors, while the other variable resistor is indicated at 2.
  • a box type cover 9 is provided with a rectangular opening 9 and an insulating base plate 10 is fixed to the lower portion of the cover 9.
  • Resistors 5 are fixed in parallel on the insulating base plate 10 as are conducting plates 6 and provided at positions corresponding to each of the resistors 5.
  • a metal plate 8 is fixed to the cover, FIG. 9, which serves as a shield between both variable resistors 1 and 2.
  • a slider 11 is accommodated in the cover 10 and is formed of an insulating material, the slider 11 consisting of a main body 11,, a knob 11, protruding integrally from the main body 11,, and through the openings 9' within the upper surface of cover 9.
  • Sliders 7 are fixed on the lower surfaces of the main body 1 1,, and the movable portion 1 1, of the body and are slidably in contact with the resistors and the conducting plates.
  • knob 11 slide on the resistors 5 and the conducting plate 6, whereby the resistance values of both variable resistors 1 and 2 are changed, FIG. 10.
  • a regulating hole 9, is provided in the cover 9 on the side closest to the movable portion 11, of the slider assembly 11 and the movable portion 11, may be moved relative to the main portion or main body 11,, by engaging the tip portion of a tool T within an engaging hole 11, of a movable portion 11,, which preliminarily passes through a hole 11, of the main body 11,, and moving the tool in one of two directions as shown by the arrows in FIG. 12.
  • the relative position of the main body l1, and the movable portion 11, of the slider assembly 11 may be shifted.
  • both portions can be coupled firmly without any coupling members required.
  • a multi-stage resistor comprising a cover surrounding first and second fixed resistors, first and second sliders mounted within said cover for sliding contact respectively with said first and second resistors, a common actuator for moving said sliders in unison,'and means permitting adjustment in position of one slider relative to the other to correct for interlocking error existing between said resistors, the improvement comprising:

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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Adjustable Resistors (AREA)
US00283999A 1971-08-28 1972-08-28 Multiple stage interlock type variable resistor Expired - Lifetime US3771093A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP46065969A JPS4831449A (enrdf_load_stackoverflow) 1971-08-28 1971-08-28

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US3771093A true US3771093A (en) 1973-11-06

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Family Applications (1)

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US00283999A Expired - Lifetime US3771093A (en) 1971-08-28 1972-08-28 Multiple stage interlock type variable resistor

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US (1) US3771093A (enrdf_load_stackoverflow)
JP (1) JPS4831449A (enrdf_load_stackoverflow)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4225844A (en) * 1979-02-01 1980-09-30 Emhart Industries, Inc. Adjustable variable resistance control system
US4973939A (en) * 1988-04-16 1990-11-27 Bsg-Schalttechnik Gmbh & Co. Kg Potentiometer combination mounted on a circuit board
USD665752S1 (en) * 2011-09-09 2012-08-21 Tokyo Cosmos Electric Co., Ltd. Case for variable resistor

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5073853U (enrdf_load_stackoverflow) * 1973-11-09 1975-06-28
JPS5171209A (ja) * 1974-12-18 1976-06-19 Dainichi Nippon Cables Ltd Dodenyoaruminiumugokin oyobi sonoseizoho
IT1065014B (it) * 1975-12-12 1985-02-25 Plessey Handel Investment Ag Potenziometro a rotazione
JPS6031209Y2 (ja) * 1977-09-14 1985-09-18 アルプス電気株式会社 回転形可変抵抗器
CN103103391A (zh) * 2012-11-09 2013-05-15 安徽欣意电缆有限公司 Al-Fe-Cu-RE铝合金及其制备方法和电力电缆

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2572651A (en) * 1950-05-11 1951-10-23 Clarostat Mfg Co Inc Control
US2959729A (en) * 1959-11-06 1960-11-08 Giannini Controls Corp Rotary potentiometer
US3566330A (en) * 1967-12-21 1971-02-23 Matsushita Electric Ind Co Ltd Variable resistor of sliding type

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2572651A (en) * 1950-05-11 1951-10-23 Clarostat Mfg Co Inc Control
US2959729A (en) * 1959-11-06 1960-11-08 Giannini Controls Corp Rotary potentiometer
US3566330A (en) * 1967-12-21 1971-02-23 Matsushita Electric Ind Co Ltd Variable resistor of sliding type

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4225844A (en) * 1979-02-01 1980-09-30 Emhart Industries, Inc. Adjustable variable resistance control system
US4973939A (en) * 1988-04-16 1990-11-27 Bsg-Schalttechnik Gmbh & Co. Kg Potentiometer combination mounted on a circuit board
USD665752S1 (en) * 2011-09-09 2012-08-21 Tokyo Cosmos Electric Co., Ltd. Case for variable resistor

Also Published As

Publication number Publication date
JPS4831449A (enrdf_load_stackoverflow) 1973-04-25

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