Battery compartment for an HVAC controller

• US 9,146,041 B2
• Filed: 03/27/2015
• Issued: 09/29/2015
• Est. Priority Date: 04/30/2013
• Status: Active Grant

• Current Assignee: Ademco Inc. (Resideo Technologies, Inc.)
• Original Assignee: Honeywell International Inc.
• Inventors: Novotny, Josef, Losak, Tomas, Takach, Eugene J.
• Primary Examiner(s): NORMAN, MARC E
• Application Number:
  US14/671,720
• Publication Number:
  US 20150204572A1
• Time in Patent Office: 186 Days
• Field of Search: 236/94
• US Class Current: 1/1
• CPC Class Codes: F24F 11/30 for purposes related to the operation of the system, e.g. for safety or monitoring
• CPC Class Codes: F24F 11/52 Indication arrangements, e.g. displays
• CPC Class Codes: F24F 11/523 for displaying temperature data
• CPC Class Codes: F24F 11/56 Remote control
• CPC Class Codes: F24F 11/62 characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
• CPC Class Codes: F24F 11/76 by means responsive to temperature, e.g. bimetal springs
• CPC Class Codes: F24F 13/20 Casings or covers
• CPC Class Codes: G02B 6/0031 Reflecting element, sheet or layer
• CPC Class Codes: G02B 6/0088 of the light guide or other optical sheets in the package
• CPC Class Codes: G05D 23/19 characterised by the use of electric means G05D23/1393 takes precedence
• CPC Class Codes: G05D 23/1904 variable in time
• CPC Class Codes: G05D 23/1917 using digital means
• CPC Class Codes: G05D 23/1919 characterised by the type of controller
• CPC Class Codes: H02H 9/04 responsive to excess voltage lightning arrestors H01C7/12, H01C8/04, H01G9/18, H01T
• CPC Class Codes: H05K 1/0215 Grounding of printed circuits by connection to external grounding means
• CPC Class Codes: H05K 13/00 Apparatus or processes specially adapted for manufacturing or adjusting assemblages of electric components
• CPC Class Codes: H05K 7/1427 Housings
• CPC Class Codes: Y10T 29/49117 Conductor or circuit manufacturing
• CPC Class Codes: Y10T 29/49126 Assembling bases

Abstract

An HVAC controller may include a first sub-assembly and a second sub-assembly releasably securable to the first sub-assembly. The first sub-assembly may include a housing having the back and a cover, a printed circuit board at least substantially enclosed by the housing, a battery compartment formed in the back of the housing for receiving one or more batteries, and a display exposed for viewing through an aperture in the cover of the housing for viewing the display by a user. The printed circuit board may include one or more battery terminals that extend from the printed circuit board through the back of the housing and into the battery compartment. In some cases, the battery compartment may define a cup-shaped reservoir that may be configured to collect leakage from one or more of the batteries.

Claims

1. A thermostat for controlling an HVAC system, comprising:

a first sub-assembly having a front side and a back side, the first sub-assembly comprising;

a housing including a back cover facing toward the back side of the first sub-assembly and a front cover facing toward the front side of the first sub-assembly, wherein the back cover is secured relative to the front cover;

a printed circuit board housed by the housing, the printed circuit board having a front side facing toward the front cover and a back side facing toward the back cover;

a display positioned adjacent the front side of the printed circuit board and electrically connected to the printed circuit board via a display connector, the front cover comprising a viewing aperture that exposes at least part of the display for viewing the display from the front side of the first sub-assembly;

the back cover having a front side facing toward the front cover and a back side facing toward the back side of the first sub-assembly, the back cover defining a hole in the back side of the back cover that extends inward toward the printed circuit board for optionally receiving at least part of one or more batteries;

a first sub-assembly electrical connector extending from the back side of the printed circuit board and accessible through the back cover;

a second sub-assembly having a front side and a back side, wherein the second sub-assembly and the first sub-assembly are configured to be releasably secured together with the front side of the second sub-assembly facing toward the back side of the first sub-assembly, the second sub-assembly comprising;

a plate that has a front side facing toward the front side of the second sub-assembly and a back side facing toward the back side of the second sub-assembly, the front side of the plate having a raised ridge around a perimeter of the plate that extends toward the front side of the second sub-assembly;

the plate further defining a hole in the front side of the plate that extends inward toward the back side of the second sub-assembly, the hole defined by the plate is positioned to be in registration with the hole defined in the back side of the back cover of the first sub-assembly when the second sub-assembly is secured to the first sub-assembly, the hole defined by the plate is sized to optionally receive at least part of one or more batteries;

a second sub-assembly electrical connector configured to electrically connect with the first sub-assembly electrical connector of the first sub-assembly when the second sub-assembly is secured to the first sub-assembly; and

one or more terminals accessible from the front side of the second sub-assembly, the one or more terminals configured to receive one or more control wires; and

a control wire aperture for allowing one or more control wires to pass from the back side of the second sub-assembly to the one or more terminals on the front side of the second sub-assembly.

2. The thermostat of claim 1, wherein the hole defined in the back side of the back cover of the first sub-assembly is defined at least in part by an upper side wall and a lower side wall both extend inward toward the printed circuit board, at least part of the lower side wall curving up toward the upper side wall.

3. The thermostat of claim 1, wherein the back side of the plate of the second sub-assembly does not extend out in a manner that mirrors the shape of the hole in the front side of the plate.

4. The thermostat of claim 1, wherein the printed circuit board comprises one or more battery terminals that extend from the printed circuit board through the back cover and into the hole defined in the back side of the back cover of the first sub-assembly.

5. The thermostat of claim 1, further comprising a wireless interface for wirelessly receiving control signals from a remote location.

6. The thermostat of claim 1 configured to be powered by one or more batteries if present.

7. The thermostat of claim 1 configured to be powered by a power wire in combination with a common wire.

8. The thermostat of claim 1 configured to be selectively powered by one or more batteries and/or a power wire in combination with a common wire.