# US 9,750,379 B2 · Vacuum cleaner for vehicle manufacturing production line

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- Number: US 9,750,379 B2
- Document ID: US9750379B2
- Status: Granted
- Kind: B2
- Application number: 14/879,038
- Filed: 2015-10-08
- Published: 2016-11-10
- Granted: 2017-09-05
- Earliest claimed: 2015-05-08
- Assignees: Hyundai Motor Company
- Applicants: Hyundai Motor Company
- Inventors: Hyun Jung Ryu
- Web page: https://patentgrep.com/patent/US9750379B2

## CPC

- A47L 9/02: Nozzles (suction nozzles for fluid transport B65G51/00)
- A47L: DOMESTIC WASHING OR CLEANING (brushes A46B; cleaning quantities of bottles or of other hollow articles of one kind B08B9/00; laundry D06F); SUCTION CLEANERS IN GENERAL (cleaning in general B08)

## Abstract

A vacuum cleaner includes a vacuum suction pipe through which impurities are collected together with air. A suction side plate has a central hole which corresponds with the vacuum suction pipe so that the vacuum suction pipe is fitted in the central hole. A holding plate is spaced apart from the suction side plate. A spring unit connects the suction side plate with the holding plate to elastically adjust a distance between the suction side plate and the holding plate.

## Claims

### Claim 1

A vacuum cleaner, comprising:
a vacuum suction pipe through which impurities are collected together with air;
a suction side plate having a central hole which corresponds with the vacuum suction pipe so that the vacuum suction pipe is fitted in the central hole;
a holding plate spaced apart from the suction side plate; and
a spring unit connecting the suction side plate with the holding plate to elastically adjust a distance between the suction side plate and the holding plate,
wherein the spring unit comprises:
a rod having one end connected with the suction side plate through a ball joint and another end penetrating the holding plate;
a stopper ring fixing the rod to the holding plate to prevent disengagement between the rod and the holding plate; and
an elastic member disposed along the rod to vary the distance between the holding plate and the suction side plate.

### Claim 2 (depends on 1)

The vacuum cleaner of claim 1, wherein the vacuum suction pipe is connected with the central hole to collect the impurities through the central hole of the suction side plate.

### Claim 3 (depends on 1)

The vacuum cleaner of claim 1, wherein the spring unit is arranged along a circumference of the vacuum suction pipe.

### Claim 4 (depends on 3)

The vacuum cleaner of claim 3, wherein the spring unit includes at least two spring units.

### Claim 5 (depends on 1)

The vacuum cleaner of claim 1, wherein the elastic member is a coil spring and surrounds an exterior of the rod.

### Claim 6 (depends on 1)

The vacuum cleaner of claim 1, wherein the holding plate is movably connected with a robot arm.

### Claim 7 (depends on 1)

The vacuum cleaner of claim 1, further comprising a suction pad formed of a rubber material and mounted to a lower side of the suction side plate along an external circumference.

### Claim 8 (depends on 1)

The vacuum cleaner of claim 1, wherein the ball joint comprises:
a ball housing fixed to the suction side plate; and
a ball formed at the one end of the rod and inserted into the ball housing.

### Claim 9

A vacuum cleaner comprising:
a vacuum suction pipe through which impurities are collected together with air;
a suction side plate having a central hole which corresponds with the vacuum suction pipe so that the vacuum suction pipe is fitted in the central hole;
a holding plate spaced apart from the suction side plate;
a rod having one end connected with the suction side plate through a ball joint and another end penetrating the holding plate;
a stopper ring fixing the rod to the holding plate to prevent disengagement between the rod and the holding plate; and
an elastic member disposed along the rod to vary a distance between the holding plate and the suction side plate.

### Claim 10 (depends on 9)

The vacuum cleaner of claim 9, wherein the ball joint comprises:
a ball housing fixed to the suction side plate; and
a ball formed at the one end of the rod and inserted into the ball housing.

### Claim 11 (depends on 10)

The vacuum cleaner of claim 10, wherein the ball housing is arranged along a circumference of the vacuum suction pipe.

### Claim 12 (depends on 10)

The vacuum cleaner of claim 10, wherein the vacuum suction pipe collects the impurities through the central hole of the suction side plate.

### Claim 13 (depends on 9)

The vacuum cleaner of claim 9, further comprising a suction pad formed of an elastic material and mounted to a lower side of the suction side plate along an external circumference of the central hole,
wherein the suction pad deflects according to a form of a contact surface.