Twist-in mounting for a thermostat

• US 4,653,708 A
• Filed: 12/16/1985
• Issued: 03/31/1987
• Est. Priority Date: 12/16/1985
• Status: Expired due to Fees

• Current Assignee: Sensors & Switches, Inc.
• Original Assignee: Hamilton Standard Controls, Inc.
• Inventors: Rich, William N.
• Primary Examiner(s): Husar, Cornelius J.
• Assistant Examiner(s): Nicholson, Eric K.
• Application Number:
  US06/809,376
• Time in Patent Office: 470 Days
• Field of Search: 248/27.1, 248/27.3, 248/221.3, 248/222.1, 248/222.2, 248/222.3, 248/224.4, 248/231.9, 248/274, 403/348, 403/349, 24/590, 24/597, 337/112, 337/380, 339/127 R, 339/188 R
• US Class Current: 248/27.1
• CPC Class Codes: G01K 1/14 Supports; Fastening devices; Arrangements for mounting thermometers in particular locations
• CPC Class Codes: H01H 37/5436 mounted on controlled apparatus
• CPC Class Codes: Y10S 24/53 Projection or cavity rotates about axis of cavity access opening to interlock
• CPC Class Codes: Y10T 403/7005 Lugged member, rotary engagement

Abstract

A thermostat mounting arrangement includes a thermostat fixedly retained by a mounting member, and the mounting member then being mounted in a panel using a "twist-in" motion. The mounting member is of one-piece metal construction having a tubular housing portion, a pair of rigid arcuate flanges at its base and, intermediate the arcuate flanges, a pair of separate resilient flange tabs. The flange tabs are spaced above the rigid arcuate flanges and include downwardly-extending detent knobs. The panel includes a notched aperture for passing the mounting member housing and the flange tabs in a certain rotative position. The flange tabs are inclined to facilitate both the rotation of the mounting member relative to the panel and its retention in the panel. The mounting member is rotated until the detent knobs on the flange tabs detentingly snap into detent holes in the panel.

Claims

1. A mounting member for mounting a thermostat on a panel, the panel having spaced, substantially parallel and oppositely facing surfaces and including a mounting aperture extending therethrough and having a plurality of radial notches, the panel further including a plurality of holes extending therethrough and being angularly displaced from said notches as one part of a complementary detenting means, said mounting member being of one piece and comprising:

a housing portion and a mounting flange portion, said housing portion being configured to receive a thermostat therein, and said mounting flange portion extending transversely outward from said housing portion for engaging said panel, said mounting flange portion including a first relatively rigid portion for engaging one said surface of the panel and a plurality of separate resilient tabs longitudinally spaced from said first portion for resiliently engaging the other said surface of the panel, said first mounting flange portion being configured to resist passage through the notched aperture and said tabs being configured to pass through said notched aperture in a first rotative position and to resist said passage in other rotative positions relative to said panel, and wherein said tabs each include a respective knob formed by an upset thereon, the positioning of said knobs being such that each knob is received in a respective hole in said panel in a second rotative position of said support member relative to said panel thereby to yieldably retain said mounting member against rotation relative to said panel.

2. The mounting member of claim 1 wherein each said tab is inclined such that its longitudinal spacing from said first mounting flange portion varies in a circumferential direction with respect to said housing portion to facilitate rotation of said mounting member into said detented engagement with said panel for a range of panel thicknesses and to ensure secured retention.

3. The mounting member of claim 2 wherein said housing portion is tubular, said first mounting flange portion extends radially outward from an end of said housing portion and said longitudinal spacing of said tabs from said first mounting flange portion is toward said housing portion.

4. The mounting member of claim 2 wherein said first mounting flange portion extends from one end of said housing portion and said longitudinal spacing of said tabs from said first mounting flange portion is toward said housing portion.

5. The mounting member of claim 3 wherein said thermostat is fixedly retained in said housing portion against relative motion and extends outwardly therefrom to provide a surface for receiving a gripping force to enable the mounting of said mounting member and thermostat on said panel.

6. The mounting member of claim 5 wherein said member is formed of metal and said tabs appear as substantially an L-shaped displacement of metal relative to said first mounting flange portion.

7. The combination of a panel, a mounting member and a thermostat, said thermostat being fixedly retained in said mounting member and said mounting member being mounted on said panel, and wherein said panel has spaced, substantially parallel and oppositely facing surfaces having a circular mounting aperture extending therethrough, said mounting aperture including a plurality of angularly-spaced notches extending radially outward therefrom, said panel further including a plurality of circular detent holes extending therethrough in angularly-spaced relation with said notches and radially-spaced relation with said mounting aperture, said mounting member being of one-piece, metal construction and including a tubular housing portion having a pair of relatively rigid, arcuate mounting flanges extending radially outward therefrom at one end and a pair of separate resilient tabs extending radially outward therefrom angularly intermediate said arcuate flanges, said tabs being axially-spaced from said arcuate flanges in a direction toward said housing and by a distance which affords resilient engagement of said panel therebetween, said housing portion and said tabs being configured for insertion through said notched aperture in said panel in a first particular rotative position, said arcuate mounting flanges being configured to resist insertion through said notched aperture in said panel in substantially all rotative positions, and said tabs including circular knob-like protrusions extending axially toward said arcuate flanges for detenting engagement with said panel within respective said detenting holes when said mounting member is rotated to a second particular rotative position.

8. The combination of claim 7 wherein said mounting member tabs are each inclined to provide a lead-in with said panel when said mounting member is rotated from said first to said second rotative position.