Cleaning head for sweeping and wringing apparatus

• US 7,555,804 B2
• Filed: 08/31/2006
• Issued: 07/07/2009
• Est. Priority Date: 08/31/2006
• Status: Expired due to Fees

• Current Assignee: Ming-Hsien Lin
• Original Assignee: Ming-Hsien Lin
• Inventors: Lin, Ming-Hsien
• Primary Examiner(s): NGUYEN, DUNG V
• Application Number:
  US11/514,046
• Publication Number:
  US 20080052851A1
• Time in Patent Office: 1,041 Days
• Field of Search: 151/192, 151/191, 152/442, 151/161, 151/162, 151/471, 152/28
• US Class Current: 15/119.2
• CPC Class Codes: A47L 13/144 having squeezing rollers
• CPC Class Codes: A47L 13/257 for mops made of sponge material
• CPC Class Codes: B25G 3/18 comprising catches or pawls
• CPC Class Codes: B25G 3/38 Hinged, pivoted, swivelling, or folding joints

Abstract

A cleaning head for a sweeping and wringing apparatus is mounted on a lower end of a connecting rod thereof and comprises a cleaning element, having a sweeping part and a held part, a base plate, holding the held part of said cleaning element and having two fixing elements, which each have a fixing hole and a guiding surface.

Claims

1. A cleaning head for a sweeping and wringing apparatus, mounted on a lower end of a handle thereof, said cleaning head comprising:

a cleaning element having a sweeping part and a held part;

a base plate, holding said held part of said cleaning element and having two fixing elements, which each have a fixing hole and a guiding surface;

a fastening assembly, fixed to a lower portion of the handle, having an open-bottomed chamber;

an elastic insertion assembly, housed in the chamber of the fastening assembly, and having at least one retractable insertion head, urged by a first elastic member, for engaging a fixing element of the base plate;

a release assembly slideably mounted to a wall of the fastening assembly, having a second elastic member urged against the fastening assembly;

wherein when a user presses the release assembly toward the fastening assembly, the at least one insertion head is retracted, thereby releasing the base plate from the fastening assembly.

2. The cleaning head for a sweeping and wringing apparatus according to claim 1, wherein said two fixing elements are continuous with said base plate to form a single body.

3. The cleaning head for a sweeping and wringing apparatus according to claim 1, wherein said two fixing elements are attached to a connecting plate which is fastened to said base plate by bolts.

4. The cleaning head for a sweeping and wringing apparatus according to claim 1, wherein said guiding surfaces are placed on inner sides of said fixing elements.

5. The cleaning head for a sweeping and wringing apparatus according to claim 4, wherein said guiding surfaces are inclined surfaces.

6. The cleaning head for a sweeping and wringing apparatus according to claim 4, wherein said guiding surfaces are curved surfaces.

7. The cleaning head for a sweeping and wringing apparatus according to claim 1, wherein said guiding surfaces are placed on outer sides of said fixing elements.

8. The cleaning head for a sweeping and wringing apparatus according to claim 7, wherein said guiding surfaces are inclined surfaces.

9. The cleaning head for a sweeping and wringing apparatus according to claim 7, wherein said guiding surfaces are curved surfaces.

10. The cleaning head for a sweeping and wringing apparatus according to claim 1, wherein said fixing elements each have a guiding groove on a top side, with said guiding surfaces being placed on inner sides of said guiding grooves.

11. The cleaning head for a sweeping and wringing apparatus according to claim 10, wherein said guiding surfaces are inclined surfaces.

12. The cleaning head for a sweeping and wringing apparatus according to claim 10, wherein said guiding surfaces are curved surfaces.

13. The cleaning head for a sweeping and wringing apparatus according to claim 1, wherein said fixing elements each have a guiding groove on a top side, with said guiding surfaces being placed on outer sides of said guiding grooves.

14. The cleaning head for a sweeping and wringing apparatus according to claim 13, wherein said guiding surfaces are inclined surfaces.

15. The cleaning head for a sweeping and wringing apparatus according to claim 13, wherein said guiding surfaces are curved surfaces.

16. A cleaning head for a sweeping and wringing apparatus, mounted on a lower end of a handle thereof, said cleaning head comprising:

a cleaning element having a sweeping part and a held part;

a base plate, holding said held part of said cleaning element and having two fixing elements, which each have a fixing hole and a guiding surface;

a holding rod fastened to a lower portion of the handle;

a fastening assembly fixed to a lower end of the holding rod, having an open-bottomed chamber with openings cut into a front wall and a rear wall, and insertion holes through a left wall and a right wall aligned with the fixing holes of the base plate;

an elastic insertion assembly having two retractable insertion heads separated by a first elastic member, and inserted in compression between the insertion holes, each insertion head having an outer projection extending through the insertion holes to releaseably engage with the fixing holes of the base plate;

a U-shaped release assembly slideably mounted to the front wall of the fastening assembly, having end sections extending into the chamber through the holes in the front wall, and a middle section with a retainer fixing an outer end of a second elastic member in compression with the inner end supported against the front wall and substantially orthogonal to the first elastic member;

wherein when a user presses the middle section of the release assembly toward the front wall, the end sections engage the insertion heads causing the outer projections to be retracted, thereby releasing the base plate from the fastening assembly.

17. The cleaning head for a sweeping and wringing apparatus according to claim 16, wherein said end sections of the release assembly have chamfered end faces.

18. The cleaning head for a sweeping and wringing apparatus according to claim 17, wherein said insertion heads each have a blocking piece and an inner projection for retaining the first elastic member.