Suction hose connecting piece

Patent metadata

Field	Value
Publication number	US-10893784-B2
Application number	US-201515536365-A
Country	US
Kind code	B2
Filing date	Dec 17, 2015
Priority date	Dec 19, 2014
Publication date	Jan 19, 2021
Grant date	Jan 19, 2021

Abstract

A suction hose connecting piece for a suction hose for producing a flow connection from a machine tool to a vacuum cleaner, the connecting piece including a tubular body with a circumferential wall that delimits a flow channel, and a plug section which is arranged on the tubular body for the purpose of producing a plug connection with a mating connecting piece, it being possible to plug the connecting piece and mating connecting piece one onto the other along a longitudinal axis of the plug section, a longitudinal latch contour being arranged on the plug section, counteracting release of the mating connecting piece from the connecting piece relative to the longitudinal axis, and engaging with a longitudinal mating latch contour of the mating connecting piece when the mating connecting piece is plugged onto the connecting piece, along the longitudinal axis of the plug section.

First claim

The invention claimed is:

1. A suction hose connecting piece for a suction hose designed to create a flow connection from a machine tool to a vacuum cleaner, said connecting piece comprising:
a tubular body with a circumferential wall which delimits a flow channel; and
a plug section arranged on said tubular body designed to create a plug connection with a mating connecting piece, wherein the connecting piece and the mating connecting piece can be plugged together along a longitudinal axis of the plug section, the plug section comprising:
an inner circumferential surface;
an outer circumferential surface;
a longitudinal latch contour formed on the inner circumferential surface of the plug section, the longitudinal latch contour being adapted to counteract detachment of the mating connecting piece from the connecting piece relative to the longitudinal axis and being further adapted to engage with a mating longitudinal latch contour of the mating connecting piece when the mating connecting piece is plugged onto the connecting piece along the longitudinal axis of the plug section; and
at least one rotational form-fit contour formed on the same inner circumferential surface and the same piece of the plug section as the longitudinal latch contour, the at least one rotational form-fit contour being adapted to create a form-fit connection with a rotational form-fit mating contour of the mating connecting piece, wherein the at least one rotational form-fit contour can be brought into or out of engagement with a mating rotational form-fit mating contour of the mating connecting piece through a relative rotational movement of the connecting piece and the mating connecting piece,

wherein at least one of the rotational form-fit contour or at least one latch contour comprises a harder material than the main plug section body of the plug section carrying the rotational form-fit contour or latch contour.

2. The suction hose connecting piece according to claim 1 , wherein the longitudinal latch contour comprises an annular peripheral groove or an annular peripheral projection.

3. The suction hose connecting piece according to claim 1 , wherein the longitudinal latch contour forms a component of an arrangement of at least two longitudinal latch contours, which are arranged next to one another or behind one another relative to the longitudinal axis.

4. The suction hose connecting piece according to claim 1 , wherein the at least one rotational form-fit contour is arranged, in a plugging direction, behind or in front of the longitudinal latch contour, so that on being plugged onto the connecting piece the mating connecting piece first comes into contact with the longitudinal latch contour and then with the rotational form-fit contour, or vice versa.

5. The suction hose connecting piece according to claim 1 , wherein the at least one rotational form-fit contour comprises at least one peripheral rotational form-fit contour running helically or at a right angle, relative to the longitudinal axis of the plug section in the form of a peripheral groove, or a thread or a bayonet-type rotational form-fit contour or at least one form-fit cam, designed to screw into a rotational form-fit mating contour running in a peripheral direction around the longitudinal axis of the plug section.

6. The suction hose connecting piece according to claim 1 , wherein the at least one rotational form-fit contour comprises at least one inner rotational form-fit contour arranged on an inner periphery of the plug section to accommodate a mating outer rotational form-fit contour arranged on an outer periphery of the mating plug-in connecting piece and at least one outer rotational form-fit contour arranged on an outer periphery of the plug section to accommodate a mating inner rotational form-fit contour arranged on an inner periphery of the plug-on mating connecting piece.

7. The suction hose connecting piece according to claim 1 , further comprising at least one latch contour, which can be brought into snap-locking engagement or out of snap-locking engagement with a mating latch contour of the mating connecting piece through the relative rotational movement of the connecting piece and the mating connecting piece around the longitudinal axis of the plug section or a longitudinal movement or sliding movement parallel to the longitudinal axis of the plug section.

8. The suction hose connecting piece according to claim 7 , wherein, in order to achieve a spring effect, the at least one latch contour consists of an elastic material or is arranged on an elastic section of the connecting piece or the at least one latch contour comprises a snap-locking recess running transversely to the relative rotational movement or a snap-locking projection running transversely to the relative rotational movement.

9. The suction hose connecting piece according to claim 7 , wherein the at least one rotational form-fit contour or the at least one latch contour is provided on a form-fit body which comprises a recess, which is suitable for deformation of the form-fit body, so that the form-fit body yields on being brought into engagement with the associated rotational form-fit mating contour or mating latch contour, or brought out of engagement with the mating contour.

10. The suction hose connecting piece according to claim 7 , wherein the rotational form-fit contours or the at least one latch contour associated therewith can, through the elastic deformation, be brought into snap-locking engagement or out of a snap-locking engagement with the rotational form-fit mating contours or a mating latch contour.

11. The suction hose connecting piece according to claim 1 , wherein at least one of the rotational form-fit contours or at least one latch contour is elastically yielding or arranged on an elastically yielding main plug section body or basic material of the plug section.

12. The suction hose connecting piece according to claim 1 , further comprising at least one form-fit body for forming a form-fit contour the basic material of which is covered, at least in sections in the region of the rotational form-fit contour, with a softer or more elastic material or one with a higher friction coefficient relative to the basic material.

13. The suction hose connecting piece according to claim 1 , further comprising a mounting for a suction hose arranged in a fixed manner on the tubular body or mounted on the tubular body so as to be resistant to displacement relative to the longitudinal axis or rotatable, or it forms a component of a suction hose or of a vacuum cleaner or a hand-held machine tool or it forms an adapter for connecting two tubular components for connecting two suction hoses, or wherein it forms a system comprising the connecting piece and the mating connecting piece.

14. The suction hose connecting piece according to claim 1 , wherein a longitudinal latch contour is arranged on the plug section, which counteracts detachment of the mating connecting piece from the connecting piece relative to the longitudinal axis which engages with a mating longitudinal latch contour of the mating connecting piece when the mating connecting piece is plugged onto the connecting piece along the longitudinal axis of the plug section.

15. A device with a suction hose connecting piece according to claim 1 , wherein the device is a suction hose or a machine tool or a hand-held machine tool or a vacuum cleaner.

16. The suction hose connecting piece according to claim 1 , wherein the plug section further comprises an annular peripheral groove or an annular peripheral projection formed on the outer circ

Assignees

• Festool Gmbh

Inventors

• Majer Michael

Classifications

• A47L9/248

  Parts, details or accessories of hoses or pipes (nozzles A47L9/02) · CPC title

• A47L7/0095 Primary

  Suction cleaners or attachments adapted to collect dust or waste from power tools · CPC title

• A47L9/242 Primary

  Hose or pipe couplings · CPC title

• A47L9/0036

  specially adapted for holding the suction hose · CPC title

• A47L5/14

  cleaning by blowing-off, also combined with suction cleaning · CPC title