Quick release automatic tensioning motor base and wear indicator

Patent metadata

Field	Value
Publication number	US-9803726-B2
Application number	US-201414158991-A
Country	US
Kind code	B2
Filing date	Jan 20, 2014
Priority date	Jan 20, 2014
Publication date	Oct 31, 2017
Grant date	Oct 31, 2017

Abstract

A quick-release automatic tensioning motor base for supporting a motor. The motor is operably coupled to a device to be driven via a drive belt. The motor base includes at least two base brackets and at least one guide rail fixedly coupled between the base brackets. A platform assembly, which supports the motor, is slidably coupled to the guide rail for movement there along. A spring assembly is selectively coupled between the base brackets and fixedly coupled to the platform assembly. The spring assembly applies a biasing force to the platform assembly to maintain a belt tension along the drive belt. A quick-release assembly selectively engages the spring assembly and the at least two base brackets to permit movement of the quick-release assembly between a first position to retain the spring assembly and a second position to release the spring assembly to permit movement of the platform assembly.

First claim

What is claimed is:

1. A quick-release automatic tensioning motor base for supporting a motor relative to a fixed structure, the motor driving a device to be driven via a drive belt, the quick-release automatic tensioning motor base comprising:
first and second base brackets connectable to a fixed structure,
a guide rail being fixedly coupled between the first and second base brackets;
a platform assembly slidably coupled to the guide rail for movement along the guide rail relative to the first and second base brackets, the platform assembly being configured to support and retain the motor thereon;
a spring assembly being selectively coupled to the first base bracket and fixedly coupled to the platform assembly for movement therewith, the spring assembly applying a biasing force to the platform assembly to automatically maintain a predetermined belt tension along the drive belt; and
a quick-release assembly having a quick-release member selectively engageable between the spring assembly and the first base bracket, the quick-release assembly being positionable in a first position to couple the spring assembly to the first base bracket and a second position to release the spring assembly from the first base bracket.

2. The quick-release automatic tensioning motor base according to claim 1 wherein the quick-release member is pivotally coupled to the first base bracket to permit rotation relative thereto.

3. The quick-release automatic tensioning motor base according to claim 2 wherein the quick-release member comprises an arcuate slot, the arcuate slot sized to receive a rod of the spring assembly therein.

4. The quick-release automatic tensioning motor base according to claim 3 wherein the rod of the spring assembly comprising a fastening head, the arcuate slot having a slot width that is greater than a diameter of the rod and less than a diameter of the fastening head.

5. The quick-release automatic tensioning motor base according to claim 4 wherein the first base bracket comprises an aperture having a diameter greater than the diameter of the fastening head, the quick-release member spanning the aperture thereby preventing the fastening head from passing through the aperture in the first position, the quick-release member permitting the fastening head to pass through the aperture in the second position.

6. The quick-release automatic tensioning motor base according to claim 1 wherein the second position that releases the spring assembly from the first base bracket further releases the platform assembly for unrestricted movement between the first and second base brackets.

7. The quick-release automatic tensioning motor base according to claim 1 , further comprising:
a wear indicator system being operably coupled between the platform assembly and a stationary structure, the wear indicator system being operable to indicate movement of the platform assembly relative to the stationary structure indicative of wear of the drive belt.

8. The quick-release automatic tensioning motor base according to claim 7 wherein the stationary structure is the at least one guide rail.

9. The quick-release automatic tensioning motor base according to claim 7 wherein the stationary structure is at least one of the first and second base brackets.

10. The quick-release automatic tensioning motor base according to claim 7 wherein the wear indicator system comprises a marker member marking an initial position of a relative position of the platform assembly and the stationary structure.

11. The quick-release automatic tensioning motor base according to claim 10 wherein the marker member comprises an O-ring disposed on the at least one guide rail.

12. A quick-release automatic tensioning motor base for supporting a motor relative to a fixed structure, the motor driving a device to be driven via a drive belt, the quick-release automatic tensioning motor base comprising:
first and second base brackets connectable to a fixed structure,
a guide rail being fixedly coupled between the first and second base brackets;
a platform assembly slidably coupled to the guide rail for movement along the guide rail relative to the first and second base brackets, the platform assembly being configured to support and retain the motor thereon;
a spring assembly being selectively coupled to the first base bracket and fixedly coupled to the platform assembly for movement therewith, the spring assembly applying a biasing force to the platform assembly to automatically maintain a predetermined belt tension along the drive belt; and
a quick-release assembly having a quick-release member selectively engageable between the spring assembly and the first base bracket, the quick-release assembly being positionable in a first position to couple the spring assembly to the first base bracket and a second position to release the spring assembly from the first base bracket,
wherein the quick-release member is slidably coupled to the first base bracket to permit linear translation relative thereto.

13. The quick-release automatic tensioning motor base according to claim 12 wherein the quick-release member comprises a linear slot, the linear slot sized to receive a rod of the spring assembly therein.

14. The quick-release automatic tensioning motor base according to claim 13 wherein the rod of the spring assembly comprising a fastening head, the linear slot having a slot width that is greater than a diameter of the rod and less than a diameter of the fastening head.

15. The quick-release automatic tensioning motor base according to claim 14 wherein the first base bracket comprises an aperture having a diameter greater than the diameter of the fastening head, the quick-release member spanning the aperture thereby preventing the fastening head from passing through the aperture in the first position, the quick-release member permitting the fastening head to pass through the aperture in the second position.

16. The quick-release automatic tensioning motor base according to claim 13 wherein the rod of the spring assembly comprising a fastening head, the linear slot having a keyhole shape having a hole portion and a slot portion extending from the hole portion, a slot width of the slot portion being greater than a diameter of the rod and less than a diameter of the fastening head, a diameter of the hole portion being greater than the diameter of the fastening head.

17. The quick-release automatic tensioning motor base according to claim 16 wherein the fastening head is retained by the slot portion when the quick-release member is in the first position and is permitted to pass through the hole portion when the quick-release member is in the second position.

Assignees

• Regal Beloit America Inc

Inventors

• Lindsay David
• Bees Edward
• Copanas Thomas

Classifications

• F16M11/2092

  comprising means allowing depth adjustment, i.e. forward-backward translation of the head relatively to the undercarriage · CPC title

• F16H2007/0842

  Mounting or support of tensioner · CPC title

• F16H7/14 Primary

  of a driving or driven pulley · CPC title