US3087341A - Electric switches - Google Patents

Electric switches Download PDF

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Publication number
US3087341A
US3087341A US83022559A US3087341A US 3087341 A US3087341 A US 3087341A US 83022559 A US83022559 A US 83022559A US 3087341 A US3087341 A US 3087341A
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United States
Prior art keywords
bushing
spherical portion
sleeve
shoulder
sealing member
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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
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Inventor
Harold W Hults
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Cutler Hammer Inc
Original Assignee
Cutler Hammer Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from US749357A external-priority patent/US3047682A/en
Application filed by Cutler Hammer Inc filed Critical Cutler Hammer Inc
Priority to US83022559 priority Critical patent/US3087341A/en
Application granted granted Critical
Publication of US3087341A publication Critical patent/US3087341A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H23/00—Tumbler or rocker switches, i.e. switches characterised by being operated by rocking an operating member in the form of a rocker button
    • H01H23/02—Details
    • H01H23/04—Cases; Covers
    • H01H23/06—Dustproof, splashproof, drip-proof, waterproof, or flameproof casings
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/87056—With selective motion for plural valve actuator
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/32—Articulated members
    • Y10T403/32606—Pivoted
    • Y10T403/32631—Universal ball and socket
    • Y10T403/32737—Universal ball and socket including liner, shim, or discrete seat
    • Y10T403/32778—Completely spacing the members

Definitions

  • An object of the invention is to provide improved sealing means for electric switches.
  • a more specific object of the invention is to provide improved sealing means for toggle lever actuator openings in switch casings which are long lived, low cost, readily assembled and highly effective.
  • a still more specific object of the invention is to provide improved sealing and seal retaining means for actuator openings in electric switches of the type having a bushing opening for pivotally supporting the actuator of the toggle lever type.
  • the sealing means includes a substantially ring-shaped sealing member compressed into sealing engagement with the lever by a shoulder formed at one end of the bushing and a sleeve inserted and fastened in the other end of the bushing.
  • FIG. 1 is a fragmentary sectional view showing a sealing means for the toggle lever
  • FIG. 2 is a horizontal sectional view taken along line 2-2 of FIG. 1;
  • FIG. 3 is a vertical sectional view of the sealing member shown in FIGS. 1 and 2 showing the relationship between the internal diameter of the member and the diameter of the spherical portion of the toggle lever prior to assembly of the two parts.
  • an operating toggle lever 52 for the switch is mounted in a threaded bushing 120 having an axial opening 56 therethrough and a flange 58 at the lower end thereof fastened to the top of housing 46 by welding or other suitable means.
  • a sealing member 60 seated in a groove in the top of flange 58 provides a watertight seal when the switch is mounted in a suitable panel (not shown.)
  • Operating toggle lever 52 consists of a somewhat enlarged, generally spherical portion 66 disposed within axial opening 56 or" bushing 12%; an operating handle portion 63 formed integrally with and extending upwardly from spherical portion 66 and outwardly beyond the bushing; and an integral shank portion 70 which tapers downwardly from spherical portion 66 through an opening 72 in the housing to a generally spherical portion 74 at the end of the lever.
  • a reciprocal sliding motion is imparted to actuator block 50 by lever 52 by virtue of the engagement of spherical portion 74 at the end of the lever with a cylindrical recess 76 in the top face of the block.
  • FIGS. 1, 2 and 3 An arrangement for sealing lever 52 in a bushing 120 is shown in FIGS. 1, 2 and 3 wherein an elastic sealing member 122. and the operating lever are effectively centered and supported in the bushing by a sleeve 124.
  • a downwardly racing shoulder 126 is formed at the top of the inside surface of the bushing for retaining sealing member 122, spherical portion 66 of lever 52 and sleeve 124 inserted from the bottom of the bushing in that order.
  • Edge 128 of the shoulder and edge 130 of the sleeve bear against spherical portion 66 of the lever and serve to properly position the lever in the bushing without unduly resisting movement of the lever in the bushing.
  • Sealing member 122 is of substantially ring-shape having an in side surface which tapers to a nose 132. Sealing engage ment is established :between nose 132 and spherical portion 66 -by making the diameter of spherical portion 66 slightly greater than the inside diameter of sealing member 122 (FIG. 3), and by compressing the sealing member slightly between shoulder 126 and the end of sleeve 124.
  • the axial position of sleeve 124 in the bushing for properly supporting lever 52 and compressing sealing member 122 is established and maintained by a tongue 134 held between a shoulder 136 formed in the bottom end of the bushing and the top of housing 46.
  • a toggle switch having a hollow switch casing provided with a hole therein, a hollow supporting bushing secured at one end to said casing around said hole, an oscillatable operating lever having a handle portion extending outwardly through said bushing and an operating portion extending through said hole into said casing and an intermediate enlarged substantially spherical portion within said bushing, the improvement cornprising;
  • said sealing member having the configuration of a ring and having a dimension parallel to its major axis substantially greater than its radial dimension whereby said sealing member can be compressed between said shoulder and said sleeve to seal the space between the inner wall of said bushing and said spherical portion while said sharp edges of said shoulder and said sleeve remain a sufiicient distance apart to confine said spherical portion of said operating lever for pivoting therebetween.
  • said resilient sealing member is provided with a substantially rectangular cross-section with the inner wall thereof tapered in opposite directions to afiord greater radial thickness at the center for compressive engagement with said spherical portion of said lever thereby to provide a better seal with less frictional drag counteracting movement of the lever.

Description

April 1963 H. w. HULTS 3,087,341
ELECTRIC SWITCHES Original Filed July 18, 1958 uvmvron HAROLD-W. HULTS ATTORNEY:
United States Patent 3,087,341 ELECTRHI SWITCHES Harold W. Halts, Milwaukee, Wis, assignor t0 Cutler- Hammer, Inc, Milwaukee, Wis, a corporation of Delaware Original application July 18, 1958, Ser. No. 749,357. Di-
vided and this application July 29, 1959, Ser. No.
Claims. (61. 7418.1)
This invention relates to improvements in electric switches, and although not limited thereto, the invention relates more particularly to improvements in miniature switches of the toggle lever operated type wherein the switch mechanism is sealed in a suitable casing against the entry of moisture and dust.
This application is a division of Harold W. Hults copending application Serial No. 749,357, filed July 18, 1958.
An object of the invention is to provide improved sealing means for electric switches.
A more specific object of the invention is to provide improved sealing means for toggle lever actuator openings in switch casings which are long lived, low cost, readily assembled and highly effective.
A still more specific object of the invention is to provide improved sealing and seal retaining means for actuator openings in electric switches of the type having a bushing opening for pivotally supporting the actuator of the toggle lever type.
The sealing means includes a substantially ring-shaped sealing member compressed into sealing engagement with the lever by a shoulder formed at one end of the bushing and a sleeve inserted and fastened in the other end of the bushing.
Other objects and advantages will be pointed out in, or be apparent from the specification and claims, as will obvious modifications of the embodiment of the invention shown in the drawings, in which:
FIG. 1 is a fragmentary sectional view showing a sealing means for the toggle lever;
FIG. 2 is a horizontal sectional view taken along line 2-2 of FIG. 1; and
FIG. 3 is a vertical sectional view of the sealing member shown in FIGS. 1 and 2 showing the relationship between the internal diameter of the member and the diameter of the spherical portion of the toggle lever prior to assembly of the two parts.
Referring to FIG. 1, an operating toggle lever 52 for the switch is mounted in a threaded bushing 120 having an axial opening 56 therethrough and a flange 58 at the lower end thereof fastened to the top of housing 46 by welding or other suitable means. A sealing member 60 seated in a groove in the top of flange 58 provides a watertight seal when the switch is mounted in a suitable panel (not shown.)
Operating toggle lever 52 consists of a somewhat enlarged, generally spherical portion 66 disposed within axial opening 56 or" bushing 12%; an operating handle portion 63 formed integrally with and extending upwardly from spherical portion 66 and outwardly beyond the bushing; and an integral shank portion 70 which tapers downwardly from spherical portion 66 through an opening 72 in the housing to a generally spherical portion 74 at the end of the lever. A reciprocal sliding motion is imparted to actuator block 50 by lever 52 by virtue of the engagement of spherical portion 74 at the end of the lever with a cylindrical recess 76 in the top face of the block.
An arrangement for sealing lever 52 in a bushing 120 is shown in FIGS. 1, 2 and 3 wherein an elastic sealing member 122. and the operating lever are effectively centered and supported in the bushing by a sleeve 124. A downwardly racing shoulder 126 is formed at the top of the inside surface of the bushing for retaining sealing member 122, spherical portion 66 of lever 52 and sleeve 124 inserted from the bottom of the bushing in that order. Edge 128 of the shoulder and edge 130 of the sleeve bear against spherical portion 66 of the lever and serve to properly position the lever in the bushing without unduly resisting movement of the lever in the bushing. Sealing member 122 is of substantially ring-shape having an in side surface which tapers to a nose 132. Sealing engage ment is established :between nose 132 and spherical portion 66 -by making the diameter of spherical portion 66 slightly greater than the inside diameter of sealing member 122 (FIG. 3), and by compressing the sealing member slightly between shoulder 126 and the end of sleeve 124. The axial position of sleeve 124 in the bushing for properly supporting lever 52 and compressing sealing member 122 is established and maintained by a tongue 134 held between a shoulder 136 formed in the bottom end of the bushing and the top of housing 46.
Although a specific embodiment of the present invention has been illustrated and described, it will be apparent to those skilled in the art that various changes and modifications may be made therein without departing from the spirit of the invention or from the scope of the appended claims.
I claim:
1. In a toggle switch having a hollow switch casing provided with a hole therein, a hollow supporting bushing secured at one end to said casing around said hole, an oscillatable operating lever having a handle portion extending outwardly through said bushing and an operating portion extending through said hole into said casing and an intermediate enlarged substantially spherical portion within said bushing, the improvement cornprising;
(a) an annular shoulder formed integrally within the outer end of said bushing and having a sharp circular edge in engagement with and forming a seat for one side of said spherical port-ion;
(b) a sleeve inserted in said bushing on the other side of said ball portion and having a sharp circular edge in engagement with and forming a seat for the other side of said spherical portion;
(0) and a resilient seal-ing member between said shoulder and said sleeve, said sealing member having the configuration of a ring and having a dimension parallel to its major axis substantially greater than its radial dimension whereby said sealing member can be compressed between said shoulder and said sleeve to seal the space between the inner wall of said bushing and said spherical portion while said sharp edges of said shoulder and said sleeve remain a sufiicient distance apart to confine said spherical portion of said operating lever for pivoting therebetween.
2. The invention defined in claim 1, wherein said resilient sealing member is provided with a substantially rectangular cross-section with the inner wall thereof tapered in opposite directions to afiord greater radial thickness at the center for compressive engagement with said spherical portion of said lever thereby to provide a better seal with less frictional drag counteracting movement of the lever.
3. The invention defined in claim 2, wherein the inner diameter of said sealing member is smaller than the diameter of said spherical portion of said lever.
4. The invention defined in claim 1, wherein the inner surface of said sleeve is frusto-conical in shape and diverges from said sharp circular edge thereof to provide space for said operating portion when said lever is pivoted.
3 5. The invention defined in claim 1, together with an external flange formed integrally around said sleeve adjacent the end thereof opposite to the end having said sharp circular edge, and said flange being clamped between said casing and said bushing to rigidly retain said sleeve within said bushing.
References Cited in the file of this patent UNITED STATES PATENTS Stearns May 21, S l n 14-17-14"? Mar- Sunda Aug. 17, Koenig Dec. 6, Hults May 8, Hyde July 31, Hults Aug. 14, Hollander Apr. 15, Kulka Nov. 18,
FOREIGN PATENTS Great Britain Mar. 9,

Claims (1)

1. IN A TOGGLE SWITCH HAVING A HOLLOW SWITCH CASING PROVIDED WITH A HOLE THEREIN, A HOLLOW SUPPORTING BUSHING SECURED AT ONE END TO SAID CASING AROUND SAID HOLE, AN OSCILLATABLE OPERATING LEVER HAVING A HANDLE PORTION EXTENDING OUTWARDLY THROUGH SAID BUSHING AND AN OPERATING PORTION EXTENDING THROUGH SAID HOLE INTO SAID CASING AND AN INTERMEDIATE ENLARGED SUBSTANTIALLY SPHERICAL PORTION WITHIN SAID BUSHING, THE IMPROVEMENT COMPRISING; (A) AN ANNULAR SHOULDER FORMED INTEGRALLY WITHIN THE OUTER END OF SAID BUSHING AND HAVING A SHARP CIRCULAR EDGE IN ENGAGEMENT WITH AND FORMING A SEAT FOR ONE SIDE OF SAID SPHERICAL PORTION; (B) A SLEEVE INSERTED IN SAID BUSHING ON THE OTHER SIDE OF SAID BALL PORTION AND HAVING A SHARP CIRCULAR EDGE IN ENGAGEMENT WITH AND FORMING A SEAT FOR THE OTHER SIDE OF SAID SPHERICAL PORTION; (C) AND A RESILIENT SEALING MEMBER BETWEEN SAID SHOULDER AND SAID SLEEVE, SAID SEALING MEMBER HAVING THE CONFIGURATION OF A RING AND HAVING A DIMENSION PARALLEL TO ITS MAJOR AXIS SUBSTANTIALLY GREATER THAN ITS RADIAL DIMENSION WHEREBY SAID SEALING MEMBER CAN BE COMPRESSED BETWEEN SAID SHOULDER AND SAID SLEEVE TO SEAL THE SPACE BETWEEN THE INNER WALL OF SAID BUSHING AND SAID SPHERICAL PORTION WHILE SAID SHARP EDGES OF SAID SHOULDER AND SAID SLEEVE REMAIN A SUFFICIENT DISTANCE APART TO CONFINE SAID SPHERICAL PORTION OF SAID OPERATING LEVER FOR PIVOTING THEREBETWEEN.
US83022559 1958-07-18 1959-07-29 Electric switches Expired - Lifetime US3087341A (en)

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US749357A US3047682A (en) 1958-07-18 1958-07-18 Electric switches
US83022559 US3087341A (en) 1958-07-18 1959-07-29 Electric switches

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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3235679A (en) * 1963-10-18 1966-02-15 Indak Mfg Corp Lever toggle switch mechanism with lever rotation preventing means
US3366754A (en) * 1966-03-04 1968-01-30 Combustion Eng Rotatable primary element for level detection provided with sealed bearing means
US3765687A (en) * 1970-10-26 1973-10-16 F Weiss Sealed link for instruments
US3966168A (en) * 1973-12-18 1976-06-29 Sury Francis P Pressure responsive valve
US4074100A (en) * 1976-06-14 1978-02-14 Cutler-Hammer, Inc. Elastic toggle switch lever mounting
US4398074A (en) * 1981-06-12 1983-08-09 Oak Industries Inc. Low profile switch having a sealed interior
US4559865A (en) * 1984-02-21 1985-12-24 Decoto Aircraft Inc. Device to transfer mechanical motion across fluid barrier
US4789766A (en) * 1987-11-24 1988-12-06 Tower Manufacturing Corporation Water-resistant switch construction
US5113046A (en) * 1990-01-27 1992-05-12 Deere & Company Housing for a micro-switch unit
WO2004059675A1 (en) * 2002-12-20 2004-07-15 Honeywell International Inc. One piece toggle switch cover with integral panel standoff and seal receptacle
US20160069137A1 (en) * 2014-03-21 2016-03-10 Halliburton Energy Services, Inc. Apparatus with a Rotary Seal Assembly Axially Coincident with a Shaft Tilting Focal Point
CN107768177A (en) * 2016-08-17 2018-03-06 C & K元件股份有限公司 Elbow formula switch with remodeling molded seal device and the component with switch and panel

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB190509744A (en) * 1905-05-09 1906-01-25 Hugh Hannah Improvements in and connected with Spool Cams for Lace Machines
US1949451A (en) * 1932-08-23 1934-03-06 John L Brulatour Pipe coupler
US2010367A (en) * 1931-06-29 1935-08-06 Clark Equipment Co Ball and socket joint
US2220120A (en) * 1938-02-17 1940-11-05 Benjamin G Plummer Universal joint for tubing
US2400849A (en) * 1944-05-05 1946-05-21 Jason C Stearns Waterproof electric switch
US2633510A (en) * 1951-09-13 1953-03-31 Hetherington Inc Electric switch
US2686851A (en) * 1950-08-23 1954-08-17 Ark Les Switch Corp Electric switch of the toggle type
US2726105A (en) * 1952-06-16 1955-12-06 Cutler Hammer Inc Sealing means for electrical switches
US2744984A (en) * 1953-08-12 1956-05-08 Cutler Hammer Inc Sealing means for lever operated electric switches
US2756775A (en) * 1952-03-05 1956-07-31 Schaible Company Faucet construction
US2759075A (en) * 1953-08-12 1956-08-14 Cutler Hammer Inc Sealing means for electric switches
US2830619A (en) * 1954-09-20 1958-04-15 Walter C Hollander Protected valve seal
US2861156A (en) * 1956-10-25 1958-11-18 Kulka Electric Corp Lever mount assembly for toggle switches

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB190509744A (en) * 1905-05-09 1906-01-25 Hugh Hannah Improvements in and connected with Spool Cams for Lace Machines
US2010367A (en) * 1931-06-29 1935-08-06 Clark Equipment Co Ball and socket joint
US1949451A (en) * 1932-08-23 1934-03-06 John L Brulatour Pipe coupler
US2220120A (en) * 1938-02-17 1940-11-05 Benjamin G Plummer Universal joint for tubing
US2400849A (en) * 1944-05-05 1946-05-21 Jason C Stearns Waterproof electric switch
US2686851A (en) * 1950-08-23 1954-08-17 Ark Les Switch Corp Electric switch of the toggle type
US2633510A (en) * 1951-09-13 1953-03-31 Hetherington Inc Electric switch
US2756775A (en) * 1952-03-05 1956-07-31 Schaible Company Faucet construction
US2726105A (en) * 1952-06-16 1955-12-06 Cutler Hammer Inc Sealing means for electrical switches
US2744984A (en) * 1953-08-12 1956-05-08 Cutler Hammer Inc Sealing means for lever operated electric switches
US2759075A (en) * 1953-08-12 1956-08-14 Cutler Hammer Inc Sealing means for electric switches
US2830619A (en) * 1954-09-20 1958-04-15 Walter C Hollander Protected valve seal
US2861156A (en) * 1956-10-25 1958-11-18 Kulka Electric Corp Lever mount assembly for toggle switches

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3235679A (en) * 1963-10-18 1966-02-15 Indak Mfg Corp Lever toggle switch mechanism with lever rotation preventing means
US3366754A (en) * 1966-03-04 1968-01-30 Combustion Eng Rotatable primary element for level detection provided with sealed bearing means
US3765687A (en) * 1970-10-26 1973-10-16 F Weiss Sealed link for instruments
US3966168A (en) * 1973-12-18 1976-06-29 Sury Francis P Pressure responsive valve
US4074100A (en) * 1976-06-14 1978-02-14 Cutler-Hammer, Inc. Elastic toggle switch lever mounting
US4398074A (en) * 1981-06-12 1983-08-09 Oak Industries Inc. Low profile switch having a sealed interior
US4559865A (en) * 1984-02-21 1985-12-24 Decoto Aircraft Inc. Device to transfer mechanical motion across fluid barrier
US4789766A (en) * 1987-11-24 1988-12-06 Tower Manufacturing Corporation Water-resistant switch construction
US5113046A (en) * 1990-01-27 1992-05-12 Deere & Company Housing for a micro-switch unit
WO2004059675A1 (en) * 2002-12-20 2004-07-15 Honeywell International Inc. One piece toggle switch cover with integral panel standoff and seal receptacle
US20160069137A1 (en) * 2014-03-21 2016-03-10 Halliburton Energy Services, Inc. Apparatus with a Rotary Seal Assembly Axially Coincident with a Shaft Tilting Focal Point
US10081983B2 (en) * 2014-03-21 2018-09-25 Halliburton Energy Services, Inc. Apparatus with a rotary seal assembly axially coincident with a shaft tilting focal point
CN107768177A (en) * 2016-08-17 2018-03-06 C & K元件股份有限公司 Elbow formula switch with remodeling molded seal device and the component with switch and panel
CN107768177B (en) * 2016-08-17 2021-03-12 C & K元件股份有限公司 Toggle switch with retrofit molded sealing device and assembly having switch and faceplate

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