Brush head of vacuum cleaner

• US 6,532,622 B2
• Filed: 01/31/2001
• Issued: 03/18/2003
• Est. Priority Date: 05/17/2000
• Status: Expired due to Fees

• Current Assignee: Dongbu Daewoo Electronics Corporation (Dayou Holdings Co.,Ltd.)
• Original Assignee: Daewoo Electronics Company Limited (Dayou Holdings Co.,Ltd.)
• Inventors: Kang, Sang-Bo, Seon, Chang-Woo
• Primary Examiner(s): Snider, Theresa T.
• Application Number:
  US09/774,507
• Publication Number:
  US 20010042285A1
• Time in Patent Office: 776 Days
• Field of Search: 154/11, 154/151, 285/7, 285/184, 285/185, 285/223, 285/283
• US Class Current: 15/415.1
• CPC Class Codes: A47L 9/02 Nozzles suction nozzles for fluid transport B65G51/00

Abstract

A brush head of a vacuum cleaner can pivot in a horizontal direction as well as a vertical direction with respect to a suction pipe, so as to easily clean an area narrower than the width of the brush head. The brush head of a vacuum cleaner includes a body which is detachably coupled to a suction pipe and is formed with a suction hole for sucking dust. A hollow cylindrical pivoting part is integrally formed with the body at a rear central portion of the body and is formed with a roller receiving cut along a periphery of the lower surface of the pivoting part. A cylindrical pivot supporting member is inserted into the pivoting part to support a horizontal pivoting movement of the pivoting part. The pivot supporting member is formed with a communicating space at its peripheral wall which communicates with the suction hole and the suction pipe, and is provided with a roller at its rear bottom surface. And, a pair of elastic bands are mounted to support the connection between the pivoting part and the pivot supporting member. One end of each elastic band is caught on the pivot supporting member and the other end of each elastic band is caught on the body. The elastic bands are disposed symmetrically on both sides of the body.

Claims

1. A brush head of a vacuum cleaner, comprising:

a body being detachably coupled to a suction pipe and being formed with a suction hole for sucking dust from a floor;

a fixing means for pivotally supporting the body, the fixing means including a cylindrical pivot-supporting member, in which an end of the fixing means is detachably coupled to the suction pipe, the pivot-supporting member is formed with a communicating space at a peripheral wall thereof, and is provided with a roller at its rear bottom surface, the pivot-supporting member communicates with the suction hole and the suction pipe, the fixing means including a fixing coupler, one end of which is detachably coupled to the suction pipe;

a pivoting means for pivoting the pivot-supporting member therein, an end of which is fixedly coupled to the body and another end of which is coupled to the other end of the fixing means pivotally in a horizontal direction, the pivoting means pivoting together with the body, the pivoting means including a pivoting part, in which the pivoting part is integrally formed with the body at a rear central portion of the body, the pivot-supporting member is inserted into a roller receiving cut so that it is pivotally moved along the roller receivng cut; and

a coupling means for elastically supporting the connection between the body and the pivoting means, the coupling means being mounted to the fixing means and the pivoting means so as to support securely the connection there between, the coupling means including a pair of elastic members, in which an end of each elastic member is fixed at the pivot-supporting member and an other end of each elastic member is fixed at the body, the pair of elastic members are disposed symmetrically on both sides of the body,

wherein a supporting shaft which is inserted into the pivot-supporting member to support the pivoting movement of the pivoting part protrudes upward from a central portion of a lower surface of the pivoting part, the roller receiving cut, which receives the roller, is formed along a periphery of the lower surface of the pivoting part, through which the roller can contact continuously with the floor.

2. The brush head of a vacuum cleaner as claimed in claim 1, wherein the roller receiving cut is formed at a circumferential angle of 180°

at a rear lower surface of the pivoting part.

3. The brush head of a vacuum cleaner as claimed in claim 1, wherein

the end of each elastic member is fixed at the pivot-supporting member by means of a fixing pin being perpendicularly inserted in the pivot-supporting member at a front upper portion thereof, in which an upper end of the fixing pin is upwardly exposed to the outside of the pivot-supporting member, wherein a pair of supporting protuberances protrude upward symmetrically at the body, adjacently to each lateral end of the body, on which the other end of each elastic member is fixed respectively.

4. The brush head of a vacuum cleaner as claimed in claim 3, wherein the elastic member is an elastic band which is made from a silicon resin material.

5. The brush head of a vacuum cleaner as claimed in claim 1, wherein between the suction pipe and the pivot-supporting member are provided a connecting member, one end of which is detachably coupled to the suction pipe and the other end of which is hingedly coupled to the pivot-supporting member, and the connecting member is provided with a pair of pivot shafts which protrude from both sides of the connecting member respectively so that the body can pivot in a vertical direction with respect to the suction pipe.

6. The brush head of a vacuum cleaner as claimed in claim 5, wherein a cover is coupled to an upper portion of the pivoting part for shielding the pivot-supporting member, and

a vertical cut is formed at the rear portion of the cover through which the connecting member passes, when the suction pipe is pivoted in a vertical direction with respect to the body.

7. A brush head of a vacuum cleaner, comprising:

a body being detachably coupled to a suction pipe and being formed with a suction hole for sucking dust from a floor;

a fixing means for pivotally supporting the body, the fixing means including a cylindrical pivot-supporting member, in which an end of the fixing means is detachably coupled to the suction pipe, the pivot-supporting member is formed with a communicating space at a peripheral wall thereof, and is provided with a roller at its rear bottom surface, the pivot-supporting member communicates with the suction hole and the suction pipe, the fixing means including a fixing coupler, one end of which is detachably coupled to the suction pipe;

a pivoting means for pivoting the pivot-supporting member therein, an end of which is fixedly coupled to the body and an other end of which is coupled to the other end of the fixing means pivotally in a horizontal direction, the pivoting means pivoting together with the body, the pivoting moans including a pivoting part, in which the pivoting part is integrally formed with the body at a rear central portion of the body, the pivot-supporting member is inserted into a roller receiving cut so that it is pivotally moved along the roller receiving cut;

the pivoting means including a pivoting coupler which is coupled at one end to the body pivotally in a vertical direction at a rear central portion of the body and at another end to the fixing coupler, and

a coupling means for supporting the connection between the body and the pivoting means, the coupling means being mounted to the fixing means and the pivoting means so as to support securely the connection therebetween, the coupling means including a hinge screw which is fastened to the pivoting and fixing couplers so that the pivoting coupler can pivot in a horizontal direction with respect to the fixing coupler;

wherein a supporting shaft which is inserted into the pivot-supporting member to support the pivoting movement of the pivoting part protrudes upward from a central portion of a lower surface of the pivoting part, the roller receiving out, which receives the roller, is formed along a periphery of the lower surface of the pivoting part, through which the roller can contact continuously with the floor.

8. The brush head of a vacuum cleaner as claimed in claim 7, wherein one end of the pivoting coupler is disposed inside the body and is formed with a curved vertical pivoting part so that the body can pivot in a vertical direction, the other end of the pivoting coupler is disposed at a rear central portion of the body and is formed with a circular first air hole which communicates with the suction hole, and a hollow female holder protrudes upward from the central portion of a bottom surface of the first air hole.

9. The brush head of a vacuum cleaner as claimed in claim 8, wherein the fixing coupler includes a circular second air hole which is of equal size and formed opposed to the first air hole, the second air hole communicating with the suction pipe, a pivot-supporting part which is disposed lower than the second air hole and received in the first air hole when the fixing coupler is coupled to the pivoting coupler, and a male holder which protrudes downward from an upper surface of the pivot-supporting part formed at an end portion of the suction pipe and is inserted into the hollow female holder formed in the first air hole, the male holder being formed with a screw hole there inside in a longitudinal direction, wherein the hinge screw penetrates the bottom surface of the pivoting coupler and is fastened into the screw hole of the male holder which is inserted into the female holder.

10. A brush head of a vacuum cleaner, comprising:

a body being detachably coupled to a suction pipe and being formed with a suction hole for sucking dust from a surface of a floor;

a hollow cylindrical pivoting part which is integrally formed with the body at a rear central portion of the body and is formed with a roller receiving cut along a periphery of a lower surface of the pivoting part;

a cylindrical pivot-supporting member which is inserted into the pivoting part to support a horizontal pivoting movement of the pivoting part, the pivot-supporting member being formed with a communicating space at its peripheral wall which communicates with the suction hole and the suction pipe, and being provided with a roller at its rear bottom surface, and

a pair of elastic bands, one end of each elastic band being fixed to the pivot-supporting member and the other end of each elastic band being fixed to the body, the pair of elastic bands being disposed symmetrically on both sides of the body,

in which an end of the suction pipe is pivotally inserted into an interior of the pivoting supporting member when a cover and the pivot-supporting member are engaged with each other.

11. The brush head of a vacuum cleaner as claimed in claim 10, wherein

the end of each elastic band is fixed at the pivot-supporting member by means of a fixing pin being perpendicularly inserted in the pivot-supporting member at a front upper portion thereof, in which an upper end of the fixing pin is upwardly exposed to the outside of the pivot-supporting member, wherein a pair of supporting protuberances protrude upward symmetrically at the body, adjacently to each lateral end of the body, on which the other end of each elastic band is fixed respectively.

12. The brush head of a vacuum cleaner as claimed in claim 10, wherein between the suction pipe and the pivot-supporting member are provided a connecting member, one end of which is detachably coupled to the suction pipe and the other end of which is hingedly coupled to the pivot-supporting member, and the connecting member is provided with a pair of pivot shafts which protrude from both sides of the connecting member respectively so that the body can pivot in a vertical direction with respect to the suction pipe.

13. The brush head of a vacuum cleaner as claimed in claim 12, wherein the cover is coupled to the upper portion of the pivoting part for shielding the pivot-supporting member, and a vertical cut is formed at the rear portion of the cover through which the connecting member passes, when the suction pipe is pivoted in a vertical direction with respect to the body.

14. A brush head of a vacuum cleaner, comprising:

a body being detachably coupled to a suction pipe and being formed with a suction hole for sucking dust from a surface of a floor;

a pivoting coupler, one end of which is disposed inside the body and is formed with a curved vertical pivoting part so that the body can pivot in a vertical direction, and the other end of which extends rearwardly from a rear central portion of the body and is formed as a first cylindrical air chamber communicating with the suction hole;

a fixing coupler, one end of which is detachably coupled to the suction pipe and the other end of which is coupled to the pivoting coupler, the fixing coupler including a second cylindrical air chamber and a pivot-supporting part in which the second cylindrical air chamber is of equal size and formed opposed to the first cylindrical air chamber and the pivot-supporting part extends downwardly from the second cylindrical air chamber and received in the first cylindrical air chamber when the fixing coupler is coupled to the pivoting coupler, the second cylindrical air chamber communicating with the suction pipe; and

a hinge screw is fastened to the pivoting and fixing couplers so that the pivoting coupler can pivot in a horizontal direction with respect to the fixing coupler.

15. The brush head of a vacuum cleaner as claimed in claim 14, wherein a hollow female holder is disposed inside the first cylindrical air chamber and protrudes upward from the central portion of a bottom surface of the pivoting coupler, a male holder protrudes downward from an upper surface of the pivot-supporting part, formed at an end portion of the suction pipe and is inserted into the hollow female holder formed in the first cylindrical air chamber, the male holder being formed with a screw hole there inside in a longitudinal direction, and the hinge screw penetrates the bottom surface of the pivoting coupler and is fastened into the screw hole of the male holder which is inserted into the female holder.