Poka-yoke V-clamp for exhaust systems

Patent metadata

Field	Value
Publication number	US-11644133-B2
Application number	US-202017126410-A
Country	US
Kind code	B2
Filing date	Dec 18, 2020
Priority date	Dec 18, 2020
Publication date	May 9, 2023
Grant date	May 9, 2023

Abstract

An exhaust clamp may connect two exhaust components or conduits together in a leak tight manner while minimizing alignment issues during the assembly process. The clamp may include a split band having a clamping mechanism and a plurality of poka-yoke locking pins configured radially about the band. The poka-yoke locking mechanism may be configured to slidably engage a bead or ridge formed on the exhaust components to align the exhaust components during the assembly process an allow the operator to tighten the clamp about the exhaust components.

First claim

What is claimed is:

1. An exhaust clamp comprising:
a circular band clamp extending around a central axis, the band clamp including an outer clamp surface, an inner surface facing the central axis, and at least one aperture extending through the outer and inner surfaces, the circular band clamp configured to engage at least one exhaust component; and
a locking pin slidably engaged with and extending through the at least one aperture, wherein the locking pin includes a shaft, a head, and a chamfer, wherein the head is at least one of fixed and removably configured on a first end of the shaft and the chamfer is at least one of fixed and removably configured on a second end of the shaft, the chamfer configured to engage a portion of the at least one exhaust component, wherein the chamfer is angled to provide a surface, the surface is configured to slide past a ridge configured on an outer surface of the at least one exhaust component, and wherein the locking pin includes a spring, the spring extends around the shaft and is configured to exert a longitudinal force on the locking pin to push the head into the at least one exhaust component.

2. The exhaust clamp of claim 1 , further comprising a plurality of the at least one aperture configured radially around the circular band clamp and each aperture extending through the outer and inner surfaces, and a plurality of corresponding locking pins configured in the plurality of at least one aperture, wherein a single locking pin is configured in a single aperture.

3. The exhaust clamp of claim 1 , wherein the cap includes a grab surface that extends radially outward from the shaft at a distance that is greater than the shaft diameter and the at least one aperture.

4. The exhaust clamp of claim 1 , wherein the circular band clamp inner and outer surfaces include a v-shaped cross-section.

5. The exhaust clamp of claim 1 , wherein the circular band clamp includes a split, the split configured to separate the circular band to position the circular band around at least one exhaust component.

6. The exhaust clamp of claim 5 , further comprising a clamping mechanism, the clamping mechanism is configured to at least one of secure and connect the circular band clamp to a first exhaust component and a second exhaust component.

7. An exhaust clamp comprising:
a split circular band clamp extending around a central axis, the band clamp including an outer surface, an inner engagement surface, and at least one aperture configured radially about the central axis and extending through the outer and inner surfaces; and
a locking pin slidably extending through the at least one aperture, the locking pin configured to engage at least one exhaust component, wherein the locking pin includes a shaft, a cap configured on a first end of the shaft, and an engagement head configured on a second end of the shaft and wherein the locking pin includes a spring, the spring extends around the shaft and is configured to exert a longitudinal force on the locking pin to push the engagement head into the at least one exhaust component.

8. The exhaust system clamp of claim 7 , wherein the split band further includes a clamping mechanism, the clamping mechanism is configured to secure the band clamp to at least one exhaust component.

9. The exhaust system clamp of claim 8 , wherein the split band is v-shaped and is configured to open and close radially when the clamping mechanism is one of tightened or loosened.

10. The exhaust system clamp of claim 7 , wherein the cap includes a grab surface that extends radially outward from the shaft at a distance that is greater than the shaft diameter.

11. The exhaust system clamp of claim 7 , wherein the engagement head is angled to provide a surface, the surface is configured to slide past a ridge configured on an outer surface of the at least one exhaust component.

12. The exhaust clamp of claim 7 , wherein the at least on exhaust component includes at least one of a bead and a ridge configured on at least one of a component outer surface and a component inner surface.

13. An exhaust assembly comprising:
a first exhaust conduit;
a second exhaust conduit, the first conduit and second conduit are configured to engage one another;
a band clamp configured to extend around and fixedly connect the first conduit and the second conduit together where the band clamp is preassembled to the first conduit prior to engagement with the second conduit; and
a locking pin slidably extending through at least one aperture configured through an outer surface of the band clamp, the locking pin configured to slide longitudinally away from a center line of the band clamp when at least one of the first exhaust conduit and the second exhaust conduit are joined during engagement; and wherein the locking pin further includes a spring, the spring is configured to force the pin against at least one of the first exhaust conduit and the second exhaust conduit to align and lock the two conduits in place.

14. The exhaust assembly of claim 13 , further comprising a clamping mechanism, the clamping mechanism configured to transfer between a first position and a second position, wherein the first position has a first arcuate formation of the band clamp and the second position has a second arcuate formation of the band clamp, the second formation includes a diameter that is less than a diameter of the first arcuate formation.

15. The exhaust system clamp of claim 13 , wherein the locking pin further includes a visual indicator, the visual indicator is at least one of visible when the locking pin slides longitudinally away from the center line of the band clamp and visible when the locking pin slides longitudinally toward the center line of the band clamp, the visual indicator is configured to indicate when the first exhaust conduit and the second exhaust conduit are aligned.

Assignees

• Ford Global Tech Llc

Inventors

• Rabasa Luis
• Carcamo Miguel Angel
• Salgado Juan Pablo

Classifications

• F16B19/02

  Bolts or sleeves for positioning of machine parts, e.g. notched taper pins, fitting pins, sleeves, eccentric positioning rings · CPC title

• F16L2201/10

  Indicators for correct coupling · CPC title

• F16L23/08 Primary

  connection by tangentially arranged pin and nut · CPC title

• F01N13/1805

  Fixing exhaust manifolds, exhaust pipes or pipe sections to each other, to engine or to vehicle body (pipe joints in general F16L; fixing auxiliaries in motor vehicles in general B60K) · CPC title

• F16B2/08

  using bands · CPC title