Hose assembly for canister vacuum cleaner

• US 4,881,909 A
• Filed: 10/31/1988
• Issued: 11/21/1989
• Est. Priority Date: 10/31/1988
• Status: Expired due to Term

• Current Assignee: Panasonic Corporation Of North America (Panasonic Holdings Corporation)
• Original Assignee: Whirlpool Corporation
• Inventors: Blackman, Gordon R.
• Primary Examiner(s): Desmond, Eugene F.
• Application Number:
  US07/264,550
• Time in Patent Office: 386 Days
• Field of Search: 439/191, 439/192, 439/194, 439/195, 439/449, 174/47, 15/377, 285/7
• US Class Current: 439/191
• CPC Class Codes: A47L 9/246 with electrical connectors
• CPC Class Codes: F16L 25/01 specially adapted for realising electrical conduction between the two pipe ends of the joint or between parts thereof
• CPC Class Codes: H01R 13/58 Means for relieving strain on wire connection, e.g. cord grip , for avoiding loosening of connections between wires and terminals within a coupling device terminating a cable for flat or ribbon cables H01R12/771

Abstract

An electrically conductive hose assembly for a vacuum cleaner includes a hose body having a plurality of resilient helical conductive wires and a handle assembly having a projecting hollow end portion received within the hose body. Handle assembly wires are connected to the hose body wires by terminals fitted over the wire ends and crimped thereto, and a shrink wrap insulation is secured therearound. The hollow end portion has outwardly projecting wire termination blocks defining circumferential slots for removably securing the hose body wire end portions adjacent their connection to the handle wires, and the hollow end portion includes a depressed section aligned with that connection. At least one of the hose wires is secured between the hollow end portion and an axially extending resilient arm which is supported from one end in a radially spaced relation from the hollow end portion and has an inwardly extending tab at the other end. A removable sleeve is also disposed around the hose body and has inwardly projecting tabs. Mounting tabs project outwardly from opposite sides of the handle assembly end portion, and engage the sleeve tabs when the sleeve is mounted thereon.

Claims

1. An electrically conductive hose assembly for a vacuum cleaner, comprising:

a hose body having a plurality of resilient helical electrically conductive wires, said wires having end portions terminating along a line substantially axial with respect to said hose body;

a terminal assembly having a projecting hollow end portion received within said hose body, said hollow end portion having on its exterior a plurality of outwardly projecting wire termination blocks for removably securing said wire end portions; and

a removable sleeve disposed around the hose body receiving the terminal assembly end portion, said sleeve when so disposed preventing removal of the wire end portions from the termination blocks.

2. The hose assembly of claim 1, further comprising terminal conductive wires secured to said hose body wires adjacent said termination blocks.

3. The hose assembly of claim 2, further comprising wire harness terminals, each of said terminals fitting over an end of one terminal wire and one hose body wire end portion.

4. The hose assembly of claim 3, wherein said harness terminals are crimped to the terminal wire end portions and connected to the hose body wire ends, and insulation is secured around each harness terminal and the wire ends at their connection.

5. The hose assembly of claim 2, wherein the hose body wire end portions are exposed and extend beyond the termination blocks for connection to the terminal wires, and further comprising a depressed section in said terminal hollow end portion aligned with the connected end portions of the hose body wires and terminal wires.

6. The hose assembly of claim 5, further comprising wire harness terminals, each of said terminals fitting over an end of one terminal wire and one hose body wire end portion.

7. The hose assembly of claim 6, wherein said harness terminals are crimped to the terminal wire end portions and connected to the hose body wire ends, and insulation is secured around each harness terminal and the wire ends at their connection.

8. The hose assembly of claim 1, wherein the termination blocks define substantially circumferentially extending slots receiving the hose wires.

9. The hose assembly of claim 8, wherein the termination blocks are axially spaced to accommodate the ends of the helically wound wires.

10. The hose assembly of claim 9, further comprising an axially extending resilient arm supported from one end in a radially spaced relation from the terminal assembly end portion, said arm further having an inwardly extending tab at its other end whereby at least one of the hose wires is located between said arm and said terminal assembly end portion with the arm tab engaging said one hose wire to hinder separation of the hose and terminal assembly.

11. The hose assembly of claim 10, wherein said arm and said termination blocks are spaced circumferentially around the terminal assembly end portion, and are further axially offset to accommodate the helical winding of the hose wires.

12. The hose assembly of claim 1, further comprising:

mounting means projecting outwardly from the terminal assembly end portion; and

an inwardly projecting tab on said sleeve engaging said mounting means to secure said sleeve to said terminal assembly end portion.

13. The hose assembly of claim 12, wherein said mounting means project from opposite sides of the terminal assembly end portion, whereby flattening of the sleeve disengages said sleeve tab therefrom for removal of the sleeve during maintenance.

14. An electrically conductive hose and handle for a vacuum cleaner, comprising:

a hose having

a flexible tubular body securable on its proximal end to the vacuum cleaner, and

a plurality of resilient conductive hose wires wound helically within said tubular body to provide support therefor, each of said hose wires having an end portion projecting from the distal end of the tubular body;

a handle secured to the distal end of the hose tubular body and having

means for securing a cleaner attachment to the handle distal end,

a tubular proximal end of the handle extending into the distal end of the hose tubular body, said proximal end having means for securing said hose wire end portions against axial movement with respect to the proximal end, said hose wire end portions further being precisely located with respect to said proximal end, and

a handle plug with a plurality of connector wires, each of said handle wires having an end projecting substantially helically around said handle proximal end; and

means for connecting the hose wire end portions to the handle wire ends.

15. The structure of claim 14, further comprising means for covering the connection of the hose and handle.

16. The structure of claim 15, further comprising mounting means projecting outwardly from the handle proximal end, wherein said covering means comprises:

a substantially rigid sleeve extending over said hose tubular body and said handle tubular proximal end, said sleeve having inwardly projecting tabs engaging said mounting means to secure said sleeve to said handle proximal end.

17. The structure of claim 16, wherein said mounting means project from opposite sides of the handle proximal end, whereby flattening of the sleeve disengages said sleeve tabs therefrom for removal of the sleeve during maintenance.

18. The structure of claim 14, wherein said wire connecting means comprises wire harness terminals, each of said terminals fitting over one end portion of one hose wire and on handle wire end.

19. The structure of claim 18, wherein insulation is secured around the terminal and wires at their connection.

20. The structure of claim 14, wherein the securing means for the hose wires and handle wires comprises wire termination blocks defining substantially circumferentially extending slots receiving the hose wire end portions.

21. The structure of claim 20, wherein the termination blocks are axially spaced to accommodate the helically wound hose wire end portions.

22. The structure of claim 21, wherein the securing means for hose wires and handle wires further comprises an axially extending arm supported from its distal end in a radially spaced relation from the handle proximal end, said arm further having an inwardly extending tab at its proximal end whereby at least one of said hose wires is located between said arm and said handle proximal end with the arm tab engaging said one hose wire to hinder separation of the hose and handle.

23. The structure of claim 22, wherein said arm and said termination blocks are spaced circumferentially around the handle proximal end, and are further axially offset to accommodate the helical winding of the hose wires.

24. The structure of claim 20, wherein said hose wire end portions have exposed portions extending beyond the termination blocks for connection to the handle wire ends, and further comprising a depressed section in said handle proximal end aligned with said wire connecting means.

25. The structure of claim 24, wherein said wire connecting means comprises wire harness terminals, each of said terminals fitting over one end portion of one hose wire and one handle wire end.

26. The structure of claim 25, wherein said terminals are pushed on to the hose wires and crimped to the handle wires, and a shrink wrap insulation is secured around the terminal and wires at their connection.

27. An electrically conductive hose assembly for a vacuum cleaner, comprising:

a self supporting hose body having a plurality of resilient metal helical conductive wires, said wires each having an electrically insulated exterior covering and a nominally curved end portion;

said nominally curved end portions each having a portion of said exterior covering removed for electrically exposing a length of bare metal conductive wire and terminating along a line defined by a radial of said hose body;

a hard plastic hollow handle body having a handle portion and a projecting hollow end portion,

said handle portion having a projecting rib adjacent said end portion, and

said end portion being received within said hose body and having outwardly projecting mounting means adjacent said handle portion rib;

a plurality of outwardly projecting wire termination blocks mounted longitudinally on said handle body end portion for aligning and securing said wire end portions to said handle body end portion;

a plurality of electrically conductive connector wires secured to said handle portion and extending outside said handle body end portion, said connector wires each having an electrically exposed end securely affixed to one of said electrically exposed end portions of said hose body wires for providing electrical contact between said hose body and said handle body; and

a slideable hard plastic sleeve of nominally circular cross-section and a diameter greater than said hose body for securing said hose body to said handle body, said sleeve having interiorly projecting distal tabs for removably securing said sleeve to the rib and mounting means located on said handle body end portion.

28. The hose assembly of claim 27, wherein the sleeve closes the termination blocks to prevent removal of the hose body wire end portions.