Seat pumping device for vehicle

Patent metadata

Field	Value
Publication number	US-11345260-B2
Application number	US-202016881679-A
Country	US
Kind code	B2
Filing date	May 22, 2020
Priority date	Jun 19, 2019
Publication date	May 31, 2022
Grant date	May 31, 2022

Abstract

A seat pumping device for a vehicle is mounted to a vehicle seat frame at a lower end part thereof, and may include: a housing having inner space provided therein and a slit hole provided in an upper end surface thereof; a clutch cam rotatably received into the inner space of the housing and having protrusions provided thereon, the protrusions protruding toward an outside of the housing by passing through the slit hole of the upper end surface thereof; and a lever bracket arranged at the outside of the housing to face the upper end surface of the housing, and having an insertion portion into which each of the protrusions of the clutch cam is inserted, so that the lever bracket is coupled to the clutch cam by coupling of the protrusion and the insertion portion to each other, and is rotated with the clutch cam.

First claim

What is claimed is:

1. A seat pumping device for a vehicle, the device comprising:
a housing having an inner space defined therein and at least one slit hole disposed in an upper end surface thereof;
a clutch cam disposed in the inner space of the housing and having at least one protrusion disposed thereon, the at least one protrusion protruding toward an outside of the housing by passing through the at least one slit hole of the upper end surface thereof; and
a lever bracket arranged at the outside of the housing to face the upper end surface of the housing, and having at least one insertion portion into which the at least one protrusion of the clutch cam is inserted, so that the lever bracket is coupled to the clutch cam by coupling of the at least one protrusion and the at least one insertion portion to each other, and is rotatable with the clutch cam,
wherein the lever bracket is spaced apart by a predetermined distance from the upper end surface of the housing while the at least one insertion portion and the at least one protrusion are coupled to each other,
wherein the at least one insertion portion of the lever bracket is at least one hole, and is disposed at a position corresponding to that of the at least one protrusion of the clutch cam,
wherein the at least one hole comprises a first hole and a second hole which are different from each other in inner diameters, and
wherein the inner diameter of the second hole is larger than the inner diameter of the first hole, and an end of the at least one protrusion is held by the first hole when the lever bracket is coupled to the clutch cam, such that the lever bracket is spaced apart by the predetermined distance from the upper end surface of the housing.

2. The device of claim 1 , wherein the clutch cam comprises a clutch body, and the at least one protrusion is protruding from a surface of the clutch body toward the upper end surface of the housing.

3. The device of claim 1 , wherein the inner diameter of the first hole is configured to be smaller than a diameter of the at least one protrusion, and the inner diameter of the second hole is configured to be larger than or the same as the diameter of the at least one protrusion.

4. The device of claim 1 , wherein each of the at least one protrusion disposed on the clutch cam has the same height, and the at least one protrusion is spaced apart from each other in a circumferential direction of the clutch cam.

5. A seat pumping device for a vehicle, the device comprising:
a housing having an inner space defined therein and at least one slit hole disposed in an upper end surface thereof;
a clutch cam disposed in the inner space of the housing and having at least one protrusion disposed thereon, the at least one protrusion protruding toward an outside of the housing by passing through the at least one slit hole of the upper end surface thereof; and
a lever bracket arranged at the outside of the housing to face the upper end surface of the housing, and having at least one insertion portion into which the at least one protrusion of the clutch cam is inserted, so that the lever bracket is coupled to the clutch cam by coupling of the at least one protrusion and the at least one insertion portion to each other, and is rotatable with the clutch cam,
wherein the lever bracket is spaced apart by a predetermined distance from the upper end surface of the housing while the at least one insertion portion and the at least one protrusion are coupled to each other,
wherein the at least one insertion portion of the lever bracket is at least one hole, and is disposed at a position corresponding to that of the at least one protrusion of the clutch cam, and
wherein the at least one protrusion has a first protrusion and a second protrusion, and wherein the first protrusion has a tapered end and the second protrusion has a non-tapered end.

6. The device of claim 5 , wherein a size of an inner diameter of the at least one hole is between a size of the diameter of the tapered end of the first protrusion and a size of the diameter of the non-tapered end of the second protrusion.

7. A seat pumping device for a vehicle, the device comprising:
a housing having an inner space defined therein and at least one slit hole disposed in an upper end surface thereof;
a clutch cam disposed in the inner space of the housing and having at least one protrusion disposed thereon, the at least one protrusion protruding toward an outside of the housing by passing through the at least one slit hole of the upper end surface thereof; and
a lever bracket arranged at the outside of the housing to face the upper end surface of the housing, and having at least one insertion portion into which the at least one protrusion of the clutch cam is inserted, so that the lever bracket is coupled to the clutch cam by coupling of the at least one protrusion and the at least one insertion portion to each other, and is rotatable with the clutch cam,
wherein the lever bracket is spaced apart by a predetermined distance from the upper end surface of the housing while the at least one insertion portion and the at least one protrusion are coupled to each other,
wherein the at least one insertion portion of the lever bracket is at least one hole, and is disposed at a position corresponding to that of the at least one protrusion of the clutch cam, and
wherein an end of the at least one protrusion and an inner circumferential surface of the at least one hole are tapered, and a surface of the tapered end of the at least one protrusion is in surface contact with the tapered inner circumferential surface of the at least one hole while the at least one protrusion is fitted into the at least one hole.

8. The device of claim 1 , wherein one of the at least one protrusion has an additional protrusion extending from an end thereof, and
wherein a diameter of the additional protrusion is smaller than a diameter of the one of the at least one protrusion, is smaller than a diameter of the at least one hole, and the diameter of the one of the at least one protrusion is larger than the diameter of the at least one hole.

Assignees

• Hyundai Transys Inc

Inventors

• Lee Young Sun

Classifications

• F16H31/002

  Hand-driven ratchets · CPC title

• B60N2/1635 Primary

  characterised by the drive mechanism · CPC title

• F16H2035/005

  Gearings or mechanisms preventing back-driving · CPC title

• B60N2/914

  Hydro-pneumatic adjustments of the shape · CPC title

• B60N2/167 Primary

  Ratchet mechanism · CPC title