Swivel catch apparatus, enclosed switch assemblies, and operational methods thereof

Patent metadata

Field	Value
Publication number	US-10431398-B2
Application number	US-201715701973-A
Country	US
Kind code	B2
Filing date	Sep 12, 2017
Priority date	Sep 12, 2017
Publication date	Oct 1, 2019
Grant date	Oct 1, 2019

Abstract

A switch box mechanism of an enclosed switch assembly. The switch box mechanism includes a swivel catch having an elongated body, a pivot configured to allow the swivel catch to rotate relative to an enclosure, and a catch end including a catch configured to engage with an enclosure lid, and a slide feature formed in the elongated body, a rod configured to couple to a switch engagement member that is configured to engage with a rotor of a line base assembly, the rod having a slide portion slidably engaged with the slide feature, and a spring configured to bias the swivel catch. Enclosed switch assemblies and switch subassemblies including the switch box mechanism, and methods of operating enclosed switch assemblies are disclosed, as are other aspects.

First claim

What is claimed is:

1. A switch box mechanism, comprising:
a swivel catch having an elongated body, a pivot configured to allow the swivel catch to rotate, and a catch end, the catch end including a catch configured to engage with a lid, and a slide feature formed in the elongated body;
a rod including a first end configured to couple to a switch engagement member that is configured to engage with a rotor of a line base assembly, and a slide portion of the rod slidably engaged with the slide feature; and
a spring configured to bias the swivel catch,
wherein the catch end of the elongated body of the swivel catch including a lock-out hole therethrough and a second lock-out hole formed through an operating handle such that the swivel catch is mounted in such a way that the lock-out hole aligns with the second lock-out hole in an off position which allows a lock to be placed through the swivel catch and the operating handle while a gap between the swivel catch and the operating handle allows the lock to pass only through the swivel catch and not the operating handle thus providing a cover lock-out function in that an enclosure is locked with the lock without locking the operating handle.

2. The switch box mechanism of claim 1 , wherein the slide feature comprises a slot.

3. The switch box mechanism of claim 2 , wherein elongated body comprises a planar portion and a tab extending substantially perpendicularly from the planar portion, and wherein the slot is formed through a tab.

4. The switch box mechanism of claim 3 , wherein the slot is formed through a bend in the tab.

5. The switch box mechanism of claim 1 , wherein the elongated body comprises a planar portion and a tab extending substantially perpendicularly from the planar portion.

6. The switch box mechanism of claim 1 , comprising a lock-out hole through the catch end of the elongated body, and a second lock-out hole through an operating handle, wherein the lock-out hole and the second lock-out hole are aligned laterally to allow a locking member to be received there through in a lock-out configuration.

7. The switch box mechanism of claim 1 , comprising a detent.

8. The switch box mechanism of claim 1 , wherein the pivot comprises an aperture configured to receive a pivot pin.

9. The switch box mechanism of claim 8 , wherein the aperture is located between a line of action of the rod and the catch.

10. The switch box mechanism of claim 1 , further comprising a lateral catch formed on the catch end on a side of the swivel catch opposite the slide feature.

11. The switch box mechanism of claim 1 , wherein the first end of the rod comprises a shoulder pin that couples to the switch engagement member.

12. The switch box mechanism of claim 11 , wherein the shoulder pin is received in an open-sided slot the switch engagement member.

13. The switch box mechanism of claim 1 , wherein the rod comprises at least one step on the first end configured to allow compression of the spring against the swivel catch.

14. The switch box mechanism of claim 1 , wherein spring comprises a coil spring surrounding a portion of the rod between the first end and the slide portion.

15. The switch box mechanism of claim 1 , wherein spring contacts a tab of the swivel catch and biases the swivel catch to a closed orientation.

16. A switch subassembly, comprising:
a line base assembly including a line base, and a rotor received in the line base and configured to be rotatable therein, the rotor including one or more electrical switch components; and
a switch box mechanism, including:
a switch engagement member configured to engage with the rotor of the line base assembly,
a swivel catch having an elongated body, a pivot configured to allow the swivel catch to rotate, and a catch end, the catch end including a catch configured to engage with a lid of an enclosure, and a slide feature formed on the elongated body,
a rod including a first end coupled to the switch engagement member, and a slide portion received in the slide feature, and
a spring biasing the switch engagement member, the spring further biasing the swivel catch to a closed catch orientation,
wherein the catch end of the elongated body of the swivel catch including a lock-out hole therethrough and a second lock-out hole formed through an operating handle such that the swivel catch is mounted in such a way that the lock-out hole aligns with the second lock-out hole in an off position which allows a lock to be placed through the swivel catch and the operating handle while a gap between the swivel catch and the operating handle allows the lock to pass only through the swivel catch and not the operating handle thus providing a cover lock-out function in that the enclosure is locked with the lock without locking the operating handle.

17. An enclosed switch assembly, comprising:
an enclosure including an enclosure body and a lid on the enclosure body; and
a switch subassembly mounted to the enclosure body, the switch subassembly comprising:
a line base assembly including a line base coupled to the enclosure body, and a rotor received in the line base and configured to be rotatable therein, the rotor including one or more electrical switch components; and
a switch box mechanism, including:
a switch engagement member configured to engage with the rotor,
a swivel catch having an elongated body, a pivot configured to allow the swivel catch to rotate relative to the enclosure, and a catch end including a catch configured to engage with the lid, and a slide feature formed on the elongated body,
a rod including a first end coupled to the switch engagement member, and a slide portion received in the slide feature, and
a spring biasing the switch engagement member, the spring further biasing the swivel catch to a closed catch orientation wherein the catch engages the lid,
wherein the catch end of the elongated body of the swivel catch including a lock-out hole therethrough and a second lock-out hole formed through an operating handle such that the swivel catch is mounted in such a way that the lock-out hole aligns with the second lock-out hole in an off position which allows a lock to be placed through the swivel catch and the operating handle while a gap between the swivel catch and the operating handle allows the lock to pass only through the swivel catch and not the operating handle thus providing a cover lock-out function in that the enclosure is locked with the lock without locking the operating handle.

18. The switch box mechanism of claim 1 , wherein the spring biases the switch engagement member and the rotor to enable a quick-make and quick-break (QMQB) function such that the switch box mechanism not only enables the QMQB function of a switch of the rotor, but also provides a retention capability to catch the lid.

Assignees

• Siemens Industry Inc

Inventors

• Jameson Thomas
• Fisher Dan A

Classifications

• H01H9/20 Primary

  Interlocking, locking, or latching mechanisms · CPC title

• H01H21/42

  produced by compression or extension of coil spring · CPC title

• H01H9/281

  making use of a padlock (H01H9/287 takes precedence) · CPC title

• H01H21/06 Primary

  interlocked with operating mechanism · CPC title

• H01H9/22

  for interlocking between casing, cover, or protective shutter and mechanism for operating contacts {(explosion-proof cases H01H9/045; built-in fuses and interlocking mechanisms H01H9/104; by automatic release of circuit breakers H01H71/126)} · CPC title