Seat pumping device for vehicle

Patent metadata

Field	Value
Publication number	US-10875424-B2
Application number	US-201816199758-A
Country	US
Kind code	B2
Filing date	Nov 26, 2018
Priority date	Dec 26, 2017
Publication date	Dec 29, 2020
Grant date	Dec 29, 2020

Abstract

Disclosed is a seat pumping device for a vehicle. The seat pumping device includes: a housing having a through hole formed therein; a clutch cam positioned on an inside of the housing and coupled such that a coupling protrusion protruding outwardly of the housing through the through hole is turnable relative to the housing; a lever bracket positioned on an outside of an upper surface of the housing so as to face the clutch cam with the housing interposed therebetween, the lever bracket being coupled to the coupling protrusion of the clutch cam to be turned integrally with the clutch cam; and a supporting portion protruding from one of the upper surface of the housing and a lower surface of the lever bracket toward a remaining one, the upper surface of the housing and the lower surface of the lever bracket facing each other, the supporting portion supporting the lever bracket and the housing so as to be spaced apart from each other at a regular interval.

First claim

What is claimed is:

1. A seat pumping device for a vehicle, the seat pumping device comprising:
a housing having a through hole formed therein;
a clutch cam positioned on an inside of the housing and coupled such that a coupling protrusion protruding outwardly of the housing through the through hole is turnable relative to the housing;
a lever bracket positioned on an outside of an upper surface of the housing so as to face the clutch cam with the housing interposed therebetween, the lever bracket being coupled to the coupling protrusion of the clutch cam to be turned integrally with the clutch cam; and
a supporting portion protruding from the upper surface of the housing or a lower surface of the lever bracket toward a remaining one among the upper surface of the housing and the lower surface of the lever bracket, the upper surface of the housing and the lower surface of the lever bracket facing each other, the supporting portion supporting the lever bracket and the housing such that the lever bracket and the housing are spaced apart from each other at a predetermined distance.

2. The seat pumping device of claim 1 , wherein the supporting portion further includes multiple supporting portions supportively arranged at positions spaced apart from each other.

3. The seat pumping device of claim 2 , wherein each of the multiple supporting portions is configured such that a protruding end thereof is in point contact with either of the lever bracket and the housing.

4. The seat pumping device of claim 1 , wherein the supporting portion protrudes from the upper surface of the housing toward the lower surface of the lever bracket, and is configured such that an end thereof has a hemispherical shape to be in point contact with the lower surface of the lever bracket.

5. The seat pumping device of claim 1 , wherein the supporting portion protrudes from the lower surface of the lever bracket toward the upper surface of the housing, and is configured such that an end thereof has a hemispherical shape to be in point contact with the upper surface of the housing.

6. The seat pumping device of claim 2 , wherein a part of the multiple supporting portions protrudes from the upper surface of the housing toward the lower surface of the lever bracket while a remaining part protrudes from the lower surface of the lever bracket toward the upper surface of the housing.

7. The seat pumping device of claim 1 , wherein the supporting portion further includes multiple supporting portions circumferentially arranged along a circle of which a center coincides with a turning axis of the lever bracket, the multiple supporting portions being arranged at positions spaced apart from each other.

8. The seat pumping device of claim 7 , wherein the multiple supporting portions are arranged to be spaced apart from each other at angular intervals of 120 degrees.

9. The seat pumping device of claim 1 , wherein the housing has a limiting step protruding from an edge of the through hole toward a center of the through hole to limit turning of the coupling protrusion, and the supporting portion is positioned on an upper surface of the limiting step.

10. The seat pumping device of claim 1 , wherein the coupling protrusions of the clutch cam are circumferentially arranged along a circle of which center coincides with a turning axis of the clutch cam, and the supporting portion is positioned circumferentially on a circle larger in radius than the circle along which the coupling protrusions are circumferentially arranged.

11. The seat pumping device of claim 1 , further comprising:
a return spring guide secured to the housing on an outside of the housing,
wherein the lever bracket has a circular vertical flange protruding toward inside of the return spring guide.

12. The seat pumping device of claim 11 , wherein the supporting portion is positioned closely to an edge of the vertical flange.

13. The seat pumping device of claim 11 , wherein the return spring guide is coupled to the housing such that the housing is spaced apart from the lever bracket at a predetermined distance in a state where the lever bracket and the housing are coupled to each other.

Assignees

• Hyundai Dymos Inc

Inventors

• Kim Won

Classifications

• B60N2/1635 Primary

  characterised by the drive mechanism · CPC title

• B60N2/167

  Ratchet mechanism · CPC title

• B60N2/169

  Stepwise movement mechanisms, e.g. ratchets (B60N2/167 takes precedence) · CPC title

• B60N2/168 Primary

  and provided with braking systems · CPC title

• B60N2/02

  the seat or part thereof being movable, e.g. adjustable (adjustable arm-rests B60N2/75; adjustable head-rests B60N2/806) · CPC title