US2783334A - Thermostat casing structure - Google Patents

Thermostat casing structure Download PDF

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Publication number
US2783334A
US2783334A US477901A US47790154A US2783334A US 2783334 A US2783334 A US 2783334A US 477901 A US477901 A US 477901A US 47790154 A US47790154 A US 47790154A US 2783334 A US2783334 A US 2783334A
Authority
US
United States
Prior art keywords
supporting structure
enclosure member
supporting
active position
switch arm
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
US477901A
Other languages
English (en)
Inventor
Russell F Garner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robertshaw Controls Co
Original Assignee
Robertshaw Fulton Controls Co
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 to NL203157D priority Critical patent/NL203157A/xx
Priority to NL94855D priority patent/NL94855C/xx
Application filed by Robertshaw Fulton Controls Co filed Critical Robertshaw Fulton Controls Co
Priority to US477901A priority patent/US2783334A/en
Priority to GB24749/55A priority patent/GB784361A/en
Priority to DER18006A priority patent/DE1088136B/de
Priority to FR1142450D priority patent/FR1142450A/fr
Application granted granted Critical
Publication of US2783334A publication Critical patent/US2783334A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H37/00—Thermally-actuated switches
    • H01H37/02—Details
    • H01H37/04—Bases; Housings; Mountings

Definitions

  • This invention relates to casing structures for thermostats and more particularly to casing structures for electric thermostats.
  • the customary electric thermostat usually consists of a power element, a switch arm biased into engagement with the power element and a pair of contact terminals for the s itch arm.
  • the contact terminals or the switch arm is usually the first element to require replacement.
  • repair cost in such a device could be greatly reduced. It has been proposed to improve an electric thermostat by producing an improved casing structure which will afford easy replacement of the major operating parts.
  • Another object of this invention is to facilitate assembly and disassembly of an electric thermostat by mounting the major operating parts in separate casing portions which are easily assembled to place the major operating parts in active position with respect to each other.
  • Another object of this invention is to produce an improved casing structure that will have various useful applications.
  • a power element or thermostatic regulator is mounted in one casing structure, a switch arm in a second casing structure and contact terminals for said switch arm in a third casing structure and means is provided to detachably connect said second and third casing structures to said first casing structure.
  • a first supporting structure 10 having side walls12, 1'4, an'end wall 16, a top wall 18, and a bottom and end thereof open, is adapted to mount a thermostatic regulator within.
  • a raised portion 20 on the top wall 18 is adapted to mount a bracket 22 which provides a means for attaching the supporting structure to a suitable structure.
  • the thermostatic regulator comprises an expansible and contractable diaphragm element 24, in communication with a capillary tube 26 which extends exteriorly of the casing structure 10 for communication with the usual temperature sensing bulb element 28.
  • Thermostaticiregtu 2,783,334 Patented Feb. 26, 1957 lators of the described type are well known in the art and further description is unnecessary.
  • the diaphragm element 24 includes the usual movable member 30 and fixed end (not shown).
  • the fixed end is carried on the inner end of an adjusting screw 32.
  • the adjusting screw 32 is threaded within the bushing 34 and has an exterior and projecting from the casing structure It to carry the usual knob 36 by means of which the adjusting screw 32 can be rotated to change the position of the diaphragm 24 with respect to the supporting structure 10.
  • a slot 38 is cut in the side wall 14 to permit removal of the diaphragm 24 and the capillary tube 26.
  • a screw 40 is threaded into the top wall 18 to fix a portion of the capillary tube 26 to the supporting structure 10 by means of a clamp 42.
  • the threaded holes 44 in the top Wall 18 and two recesses 46 in the end Wall 16 are provided to facilitate attachment of supporting structures later to be described to the supporting structure 10.
  • a second supporting structure 48 of channel shape having side walls 50, 52 and a bottom wall 54. is adapted to mount a switch arm 56 which has a conducting element 58 pivoted on an end thereof.
  • the switch arm 56 is pivoted in oppositely disposed recesses 60 in the side walls 50, 52 and afforded snap action by a pair of springs 62 acting in cooperation with a lever 64 which is pivoted on the side walls 50, 52 and connected to the switch arm 56 by the springs 62. Snap acting mechanisms of this type are Well known in the art and further description is unnecessary.
  • the second supporting structure 48 is adapted to be detachably secured in an active position with respect to the first supporting structure 10, whereby the bottom wall 54 will provide a bottom wall for the first supporting structure 10 and the outer surfaces of the side walls 50, 52 will be in engagement with the inner surfaces of the side walls 12, 14.
  • the side walls 50, 52 each have a tongue 66 projecting from an end thereof, which are adapted to be detachably received by the recesses 46.
  • the bottom wall 54 is provided with two holes 68 which become aligned with the threaded holes 44 when the second supporting structure 48 is placed in an active position with respect to the first supporting structure 10.
  • the lever 64 When the second supporting structure 48 is in the abovedescribed active position with respect to the first supporting structure 10, the lever 64 will be engageable by the movable member 30 to cause snap acting movement of the switch arm 56 in response to temperature variations.
  • the springs 62 serve to bias the switch arm 56 and the lever 64 toward the open side of the second supporting structure 48 and toward the movable member 30 when the second supporting structure 48 is in an active position with respect to the first supporting structure 10.
  • the lever 64 will move with the movable member 30 in response to temperature variations.
  • a barrier 70 is loosely mounted across the top of the second supporting structure 48 having the ends thereof in oppositely disposed recesses 72 in the side walls 50, 52.
  • a third supporting structure 74 of non-conducting material has a hollow body portion 76 and a flanged end wall 78 which is adapted to provide an end wall for the main supporting structure 10 when the third supporting structure 74 is placed in an active position with respect to the first supporting structure 10 and the second supporting structure 48.
  • the body portion 76 is adapted to engage'the inner surfaces of the side walls 50, 52 and the bottom wall 54 of the second supporting structure 48 and the top wall 18 of the first supporting structure when placed in an active position therewith.
  • the flanged end wall 78 is adapted to overlap the ends ofthe side walls 50,52 and bottom wall 54 of the second supporting structure and side walls 12, 14 and top wall 10 of the first supporting structure when placed in an active position therewith.
  • the open end of the body portion 76 engages the barrier 70.
  • the third supporting structure 74 has an open chamber 80 within the hollow body portion 76.
  • the chamber 80 is adapted to allow movement of the end of the switch arm 56 and its conducting element 58 within.
  • Two conducting elements 82 are mounted within the third supporting structure 74 and have portions within the chamber 80 which define contact surfaces for the conducting element 58 of the switch arm 56 and portions projecting from the flanged face portion 78 to define two lugs which are adapted to be connected to an electric circuit.
  • Two holes 84 are spaced in the body portion 76 of the third supporting structure 74 and extend through the body portion 76.
  • the holes 84 are positioned to become aligned with the holes 68 and the holes 44 when the third supporting structure 74 is placed in an active position with respect to the second supporting structure 48 and the first supporting structure 10.
  • Each of the holes 84 in the body portion 76 is provided with arecess 86 at each end.
  • screws 88 may be inserted into the holes 68 in the bottom Wall 54 of the second supporting structure 48 and through the holes 84 in the body portion of the third supporting structure 76 to be threaded within the top wall 18 of the first supporting structure 10.
  • the screws 88 thus cooperate with the tongues 66 in the recesses 46 to hold the second supporting structure 48 and the third supporting structure 74 in an active position with the first supporting structure 10.
  • a casing structure for a thermostat having thermally responsive means, controlling means, and operating means for actuating the controlling means in response to variations in the temperature condition of the. ther mally responsive means
  • the combination comprising a Since it is only necessary to 4 main supporting structure for supporting the thermally responsive means, a second supporting structure for operating the operating means, a third supporting structure for supporting the controlling means, and means for detachably connecting said second and third supporting structures to said main supporting structure thereby placing said operating means in an operative position with respect to the thermally responsive means and with respect to the controlling means.
  • a casing structure for a thermostat having thermally responsive means, switch means, and operating means for actuating the switch means between positions in response to variations in the temperature condition of the thermally responsive means
  • the combination comprising a main supporting structure of generally rectangular configuration for supporting the thermally responsive means and having a plurality of side walls, a second supporting structure of generally rectangular configuration for supporting the operating means and having a plurality of side walls, a plurality of tongues projecting from said side walls of said second supporting structure, said main supporting structure having a plurality of recesses in said side walls thereof for receiving said tongues to partially hold said second supporting structure in an active position with respect to said main supporting structure, a third supporting structure of generally rectangular configuration for supporting the switch means, the switch means being positioned to be actuated by the operating means when said third supporting structure is in an active position with respect to said second supporting structure, and means cooperable with tongues for holding said third supporting structure and said second supporting structure in an active position with respect to said main supporting structure.
  • a switch arm engageable with the thermally responsive means and conducting elements engageable by the switch arm
  • the combination comprising a main supporting structure of generally rectangular configuration for supporting the thermally responsive means and having an open end and side, a second supporting structure of generally rectangular configuration for supporting the switch arm, means for detachably connecting said second structure to said main supporting structure to close said open side of said main supporting structure, means supported by said second structure for biasing the switch arm into engagement with the thermally responsive means when said second supporting structure is detachably connected to said main supporting structure, means within said second supporting structure for limiting movement of said switch arm by said biasing means when said second supporting structure is detached from said main supporting structure, a third supporting structure of generally rectangular configuration for supporting the conducting elements, means for detachably connecting said second structure to said main supporting structure to establish a closure for said open end of said main supporting structure, and to position the conducting elements in an operative position with respect to the switch arm, and means for holding said second and third supporting structures in an active position with
  • a casing structure for a thermostat as claimed in claim 3 wherein said movement limiting means comprises a barrier connecting the walls of said second supporting structure and positioned to be engaged by the switch arm.
  • a casing structure comprising a first enclosure member of generally rectangular configuration having an adjacent end and side thereof open, a second enclosure member of generally rectangular configuration and having bottom and side Walls, said bottom wall beingadapted to provide a side wall for said first enclosure mmeber, said second enclosure member having tongues projecting from said side walls, said first enclosure member having recesses in an end wall to detachably receive said tongues and partially hold said first and second enclosure member in an active position, a third enclosure member of generally rectangular configuration and having an end portion thereof open, said third enclosure member being adapted to provide an end wall for said first enclosure member, and means cooperable with said tongues to hold said second enclosure member and said third enclosure member in an active position with respect to said first enclosure member.
  • a casing structure comprising a first enclosure member of generally rectangular configuration having an adjacent end and side thereof open, said first enclosure member including an end wall having a plurality of recesses therein, a second enclosure member of generally rectangular configuration and adapted to provide a side wall for said first enclosure member thereby closing said open side thereof, said second enclosure member having a plurality of side walls and a plurality of tongues projecting from said side Walls, said tongues being adapted to be detachably received in said recesses to partially hold said second enclosure member in an active position with respect to said first enclosure member, a third enclosure member of generally rectangular configuration and having a side thereof open, said third enclosure member being adapted to provide an end wall for said first enclosure member when in an active position therewith, and means cooperable with said tongues to hold said second and third enclosure members in an active position with said first enclosure member.
  • a casing structure comprising a first enclosure member of generally rectangular configuration and having a plurality of supporting walls and two adjacent sides thereof open, said first enclosure member having a plurality of recesses in one of said supporting walls, a second enclosure member of generally rectangular configuration and having a plurality of supporting walls, said supporting walls of said second enclosure member being adapted to engage the inner surfaces of said supporting walls of said first enclosure member, one of said supporting walls of said second enclosure member being adapted to close one of said open sides of said first enclosure member when said second enclosure member is in an active position with respect to said first enclosure member, a plurality of projecting tongues on said supporting walls of said second enclosure member, said projecting tongues being adapted to be detachably received in said recesses to partially hold said second enclosure member in an active position with respect to said first enclosure member, a third enclosure member of generally rectangular configuration and having a plurality of supporting walls, said supporting walls of said third enclosure member being adapted to engage the inner surfaces of said supporting walls of said first and second enclosure members, said third enclosure member having
  • a casing structure as claimed in claim 8 wherein said means comprises at least one screw extending through said second enclosure member and said third enclosure member and threaded into said first enclosure member.

Landscapes

  • Thermally Actuated Switches (AREA)
US477901A 1954-12-27 1954-12-27 Thermostat casing structure Expired - Lifetime US2783334A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
NL203157D NL203157A (en, 2012) 1954-12-27
NL94855D NL94855C (en, 2012) 1954-12-27
US477901A US2783334A (en) 1954-12-27 1954-12-27 Thermostat casing structure
GB24749/55A GB784361A (en) 1954-12-27 1955-08-29 Improvements in thermostat casing structures
DER18006A DE1088136B (de) 1954-12-27 1955-12-22 Gehaeuse fuer einen temperaturabhaengigen elektrischen Schalter
FR1142450D FR1142450A (fr) 1954-12-27 1955-12-23 Logement perfectionné des éléments d'un thermostat

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US477901A US2783334A (en) 1954-12-27 1954-12-27 Thermostat casing structure

Publications (1)

Publication Number Publication Date
US2783334A true US2783334A (en) 1957-02-26

Family

ID=23897797

Family Applications (1)

Application Number Title Priority Date Filing Date
US477901A Expired - Lifetime US2783334A (en) 1954-12-27 1954-12-27 Thermostat casing structure

Country Status (5)

Country Link
US (1) US2783334A (en, 2012)
DE (1) DE1088136B (en, 2012)
FR (1) FR1142450A (en, 2012)
GB (1) GB784361A (en, 2012)
NL (2) NL94855C (en, 2012)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3065323A (en) * 1959-06-05 1962-11-20 Gen Electric Condition responsive electric switch mechanism
CN111966146A (zh) * 2020-08-20 2020-11-20 嘉兴霸能智能家居有限公司 一种智能家居用浴室温控器

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8601296D0 (en) * 1986-01-20 1986-02-26 Wandsworth Electrical Ltd Electrical switch

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1072009A (en) * 1910-10-17 1913-09-02 John H Parker Sectional box.
US1620047A (en) * 1921-09-03 1927-03-08 Ind Controller Company Sectional cabinet for electrical apparatus
US1641265A (en) * 1924-04-23 1927-09-06 Arthur C Gaynor Insulating inclosure
US1944687A (en) * 1933-05-27 1934-01-23 United American Bosch Corp Combined casing and support
US2320895A (en) * 1940-06-07 1943-06-01 Sherlock John Edward Thermally operated electric switch

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL53019C (en, 2012) * 1937-03-01
NL116223C (en, 2012) * 1944-02-21
DE871797C (de) * 1949-12-29 1953-03-26 Sunvic Controls Ltd Elektrischer Energieregler
NL77543C (en, 2012) * 1951-01-16
DE890207C (de) * 1951-05-06 1953-09-17 Siemens Ag Anordnung zum formschluessigen Einbau von Schalt-, insbesondere Bi-Metallelementen in Isoliergehaeuse
DE877165C (de) * 1951-11-01 1953-05-21 Felten & Guilleaume Carlswerk Aus Sockel und Oberteil bestehender Schutzschalter

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1072009A (en) * 1910-10-17 1913-09-02 John H Parker Sectional box.
US1620047A (en) * 1921-09-03 1927-03-08 Ind Controller Company Sectional cabinet for electrical apparatus
US1641265A (en) * 1924-04-23 1927-09-06 Arthur C Gaynor Insulating inclosure
US1944687A (en) * 1933-05-27 1934-01-23 United American Bosch Corp Combined casing and support
US2320895A (en) * 1940-06-07 1943-06-01 Sherlock John Edward Thermally operated electric switch

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3065323A (en) * 1959-06-05 1962-11-20 Gen Electric Condition responsive electric switch mechanism
CN111966146A (zh) * 2020-08-20 2020-11-20 嘉兴霸能智能家居有限公司 一种智能家居用浴室温控器
CN111966146B (zh) * 2020-08-20 2021-10-29 嘉兴霸能智能家居有限公司 一种智能家居用浴室温控器

Also Published As

Publication number Publication date
NL203157A (en, 2012)
NL94855C (en, 2012)
GB784361A (en) 1957-10-09
FR1142450A (fr) 1957-09-18
DE1088136B (de) 1960-09-01

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