IP Library Granted Patent US 11,421,761
Granted Patent B2
US 11,421,761 · App. 16/708,619 · Granted Aug 23, 2022

Motor stop for a through-frame slide out system

Inventors: Brian Carlson (South Bend, IN); Patrick Quigley (South Bend, IN)
Assignee: Lippert Components, Inc.
F16H25/2015B60P3/34F16D48/06F16D2500/10418F16H2025/2075
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Quick Facts
Patent No.
US 11,421,761
App. No.
16/708,619
Granted
Aug 23, 2022
Kind
B2
Abstract

A motor stop mechanism serves as a stop limit for a motor including an output shaft. The motor stop mechanism includes a motor mounting surface to which the motor is attachable, where the motor output shaft is positionable through the motor mounting surface. A coupler is fixable to and rotatable with the output shaft, and a threaded drive shaft is fixed to and rotatable with the coupler. A trunnion threaded on the threaded drive shaft is displaceable on the threaded drive shaft with rotation of the threaded drive shaft. The trunnion is displaceable between a retracted position and an extended position by forward and reverse rotation of the threaded drive shaft. A stop limit defines the extended position of the trunnion. In use, when the trunnion reaches the stop limit, the motor is stopped.

Claims (36)

1. A motor stop mechanism for a motor including an output shaft, the motor stop mechanism comprising:

a motor mounting surface to which the motor is attachable, the motor output shaft being positionable through the motor mounting surface;

a coupler fixable to and rotatable with the motor output shaft;

a threaded drive shaft fixed to and rotatable with the coupler;

a trunnion threaded on the threaded drive shaft and displaceable on the threaded drive shaft with rotation of the threaded drive shaft, wherein the trunnion is displaceable between a retracted position and an extended position by forward and reverse rotation of the threaded drive shaft;

a stop limit defining the extended position of the trunnion; and

an engaging output shaft coupled to and rotatable with the threaded drive shaft, the engaging output shaft being coupled to the threaded drive shaft on a side of the stop limit opposite from the trunnion and on an end of the threaded drive shaft opposite from the coupler, wherein the engaging output shaft is connectable to a drive system for displacing a load.

2. The motor stop mechanism according to claim 1 , wherein the motor mounting surface comprises a mounting bracket positioned adjacent the threaded drive shaft, the motor stop mechanism further comprising a track member secured to the mounting bracket, wherein the trunnion engages the track member.

3. The motor stop mechanism according to claim 2 , wherein the track member comprises a track, and wherein the trunnion comprises a guide positioned in the track.

4. The motor stop mechanism according to claim 3 , wherein the guide of the trunnion is shaped in complement to a shape of the track such that the guide engages the track.

5. The motor stop mechanism according to claim 3 , wherein the stop limit comprises at least one jack bolt positioned in the track in a path of the guide.

6. The motor stop mechanism according to claim 1 , wherein the motor mounting surface comprises a mounting bracket positioned adjacent the threaded drive shaft, and wherein the trunnion directly engages the mounting bracket.

7. The motor stop mechanism according to claim 1 , wherein the stop limit comprises a stop nut threaded onto the threaded drive shaft.

8. The motor stop mechanism according to claim 7 , wherein the stop limit comprises a double nut threaded onto the threaded drive shaft.

9. The motor stop mechanism according to claim 1 , further comprising:

a mounting bracket; and

a non-driven shaft fixed to the mounting bracket and parallel with the threaded drive shaft,

wherein the trunnion is connected between the threaded drive shaft and the non-driven shaft, and wherein the stop limit is positioned on the non-driven shaft and separated from the threaded drive shaft.

10. The motor stop mechanism according to claim 9 , wherein the stop limit is connected between the mounting bracket and the non-driven shaft.

11. A slide-out frame assembly including a slide-out frame displaceable relative to a fixed frame, the slide-out frame assembly comprising:

a motor including an output shaft;

a drive system coupled with the output shaft and engaging the slide-out frame, the drive system driving the slide-out frame linearly in a first direction between an inside position and an outside position; and

a motor stop mechanism acting between the motor and the drive system, wherein the motor stop mechanism includes:

a motor mounting surface to which the motor is attached, the motor output shaft being positioned through the motor mounting surface,

a coupler fixed to and rotatable with the output shaft,

a threaded drive shaft fixed to and rotatable with the coupler,

a trunnion threaded on the threaded drive shaft and displaceable on the threaded drive shaft with rotation of the threaded drive shaft in a second direction perpendicular to the first direction, wherein the trunnion is displaceable between a retracted position and an extended position by forward and reverse rotation of the threaded drive shaft, and

a stop limit defining the extended position of the trunnion,

wherein the extended position of the trunnion corresponds to the outside position of the slide-out frame.

12. The slide-out frame assembly according to claim 11 , further comprising a control circuit connected with the motor, the control circuit being programmed to cut power to the motor when the trunnion reaches the extended position.

13. The slide-out frame assembly according to claim 12 , wherein the motor comprises a clutch, and wherein the control circuit is programmed to discontinue operation of the motor via the clutch when the control circuit detects that a torque limit is reached.

14. The slide-out frame assembly according to claim 12 , further comprising a resettable breaker connected between the motor and a power source for the motor, wherein the control circuit is programmed to activate the resettable breaker to cut power to the motor when the control circuit detects that a current limit is reached.

15. The slide-out frame assembly according to claim 12 , wherein the control circuit is programmed to cut power to the motor when the control circuit detects a predetermined current change over a given time period.

16. The slide-out frame assembly according to claim 12 , further comprising a Hall effect sensor that is configured to measure a power supply and monitor movement data, wherein the control circuit is programmed to cut power to the motor based on a signal from the Hall effect sensor.

17. The slide-out frame assembly according to claim 12 , further comprising an in-line torque sensor coupled with the motor, wherein the control circuit is programmed to cut power to the motor when the in-line torque sensor detects a torque limit or a predefined change in torque over a given time period.

18. The slide-out frame assembly according to claim 11 , further comprising a limit switch coupled with the motor that is tripped when the trunnion reaches the extended position.

Assignments (3)
SECURITY INTEREST Recorded Mar 25, 2025
From: LIPPERT COMPONENTS, INC.; CURT MANUFACTURING, LLC; FURRION, LLC; FURRION LTD; INNOVATIVE DESIGN SOLUTIONS, INC.; KASPAR RANCH HAND EQUIPMENT, LLC; LIPPERT COMPONENTS MANUFACTURING, INC.; TAYLOR MADE GROUP, LLC
To: JPMORGAN CHASE BANK, N.A.
Reel/Frame 070719/0650 →
CORRECTIVE ASSIGNMENT TO CORRECT THE ASSIGNEE TO READ LIPPERT COMPONENTS, INC. PREVIOUSLY RECORDED ON REEL 051239 FRAME 0357. ASSIGNOR(S) HEREBY CONFIRMS THE ASSIGNMENT. Recorded Dec 13, 2019
From: CARLSON, BRIAN; QUIGLEY, PATRICK
To: LIPPERT COMPONENTS, INC.
Reel/Frame 051285/0718 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Dec 10, 2019
From: CARLSON, BRIAN; QUIGLEY, PATRICK
To: LIPPERT COMPONENTS MANUFACTURING, INC.
Reel/Frame 051239/0357 →