Latch assembly incorporating a fan brake actuator for use in a cooling unit of a telecommunications system

Patent metadata

Field	Value
Publication number	US-10028407-B2
Application number	US-201514827605-A
Country	US
Kind code	B2
Filing date	Aug 17, 2015
Priority date	Aug 17, 2015
Publication date	Jul 17, 2018
Grant date	Jul 17, 2018

Abstract

A latch assembly for a cooling unit of a telecommunications shelf assembly, the latch assembly including: a faceplate; a latch handle movably coupled to the faceplate, wherein, when the latch handle is actuated, the cooling unit is attached to/released from the shelf assembly; and a locking mechanism coupled to the latch handle, wherein, when the locking mechanism is actuated, the cooling unit is locked to/unlocked from the shelf assembly; wherein the locking mechanism includes a fan brake actuator mechanism that is coupled to an electronic fan brake switch associated with one or more fans of the cooling unit. Optionally, the latch handle is pivotably coupled to the faceplate and is actuated by rotation. Optionally, the locking mechanism includes a captive screw that is advanced into/backed out of a threaded aperture associated with the faceplate. Optionally, the fan brake actuator mechanism includes a lever member that couples the locking mechanism to the electronic fan brake switch.

First claim

What is claimed is:

1. A latch assembly for a cooling unit of a telecommunications shelf assembly, the latch assembly comprising:
a faceplate;
a latch handle movably coupled to the faceplate, wherein, when the latch handle is actuated, the cooling unit is attached to/released from the shelf assembly; and
a locking mechanism coupled to the latch handle, wherein, when the locking mechanism is actuated, the cooling unit is locked to/unlocked from the shelf assembly;
wherein the locking mechanism comprises a fan brake actuator mechanism that is coupled to an electronic fan brake switch associated with one or more fans of the cooling unit, wherein the electronic fan brake switch engages an electronic brake on the one or more fans when the electronic fan brake switch is opened.

2. The latch assembly of claim 1 , wherein the latch handle is pivotably coupled to the faceplate and is actuated by rotation.

3. The latch assembly of claim 1 , wherein the locking mechanism comprises a captive screw that is advanced into/backed out of a threaded aperture associated with the faceplate.

4. The latch assembly of claim 1 , wherein the fan brake actuator mechanism comprises a lever member that couples the locking mechanism to the electronic fan brake switch.

5. The latch assembly of claim 4 , wherein a first end of the lever member is coupled to the faceplate, wherein a second end of the lever member contacts the electronic fan brake switch, and wherein the locking mechanism contacts the lever member between the first end and the second end of the lever member.

6. The latch assembly of claim 4 , wherein the lever member comprises a light pipe that transmits light from an interior portion of the cooling unit to an exterior portion of the cooling unit.

7. A cooling unit of a telecommunications shelf assembly, the cooling unit comprising:
a faceplate; and
a latch assembly, comprising:
a latch handle movably coupled to the faceplate, wherein, when the latch handle is actuated, the cooling unit is attached to/released from the shelf assembly; and
a locking mechanism coupled to the latch handle, wherein, when the locking mechanism is actuated, the cooling unit is locked to/unlocked from the shelf assembly;
wherein the locking mechanism comprises a fan brake actuator mechanism that is coupled to an electronic fan brake switch associated with one or more fans of the cooling unit, wherein the electronic fan brake switch engages an electronic brake on the one or more fans when the electronic fan brake switch is opened.

8. The cooling unit of claim 7 , wherein the latch handle is pivotably coupled to the faceplate and is actuated by rotation.

9. The cooling unit of claim 7 , wherein the locking mechanism comprises a captive screw that is advanced into/backed out of a threaded aperture associated with the faceplate.

10. The cooling unit of claim 7 , wherein the fan brake actuator mechanism comprises a lever member that couples the locking mechanism to the electronic fan brake switch.

11. The cooling unit of claim 10 , wherein a first end of the lever member is coupled to the faceplate, wherein a second end of the lever member contacts the electronic fan brake switch, and wherein the locking mechanism contacts the lever member between the first end and the second end of the lever member.

12. The cooling unit of claim 10 , wherein the lever member comprises a light pipe that transmits light from an interior portion of the cooling unit to an exterior portion of the cooling unit.

13. A method for providing and using a latch assembly for a cooling unit of a telecommunications shelf assembly, the method comprising:
providing a faceplate;
providing a latch handle movably coupled to the faceplate, wherein, when the latch handle is actuated, the cooling unit is attached to/released from the shelf assembly;
providing a locking mechanism coupled to the latch handle, wherein, when the locking mechanism is actuated, the cooling unit is locked to/unlocked from the shelf assembly;
wherein the locking mechanism comprises a fan brake actuator mechanism that is coupled to an electronic fan brake switch associated with one or more fans of the cooling unit, wherein the electronic fan brake switch engages an electronic brake on the one or more fans when the electronic fan brake switch is opened;
actuating the locking mechanism to actuate the electronic fan brake switch; and
actuating the latch handle to attach the cooling unit to/release the cooling unit from the telecommunications shelf assembly.

14. The method for using the latch assembly of claim 13 , wherein the latch handle is pivotably coupled to the faceplate and is actuated by rotation.

15. The method for using the latch assembly of claim 13 , wherein the locking mechanism comprises a captive screw that is advanced into/backed out of a threaded aperture associated with the faceplate.

16. The method for using the latch assembly of claim 13 , wherein the fan brake actuator mechanism comprises a lever member that couples the locking mechanism to the electronic fan brake switch.

17. The method for using the latch assembly of claim 16 , wherein a first end of the lever member is coupled to the faceplate, wherein a second end of the lever member contacts the electronic fan brake switch, and wherein the locking mechanism contacts the lever member between the first end and the second end of the lever member.

18. The method for using the latch assembly of claim 16 , wherein the lever member comprises a light pipe that transmits light from an interior portion of the cooling unit to an exterior portion of the cooling unit.

Assignees

• Ciena Corp

Inventors

• Meunier Trevor
• Saturley Peter

Classifications

• H05K7/20581

  Cabinets including a drawer for fans · CPC title

• H05K7/1409 Primary

  by lever-type mechanisms · CPC title

• H05K7/20136 Primary

  Forced ventilation, e.g. by fans (H05K7/202 takes precedence) · CPC title