Coupling part and hose coupling provided therewith, and method for coupling a hose

Abstract

A coupling part for a hose coupling, a hose coupling provided therewith and method for coupling a hose or hose part. The coupling part includes an annular element; a number of hook-like coupling elements arranged at or on the annular element and configured to engage on a corresponding coupling element of a corresponding coupling part for the purpose of forming a coupling; and a wall surface provided on the inward directed side of the hook-like coupling element and provided at an angle of chamfer to the main throughflow direction of the coupling part.

Claims

1. A coupling part for a hose coupling, comprising: an annular element; a number of coupling elements arranged at or on the annular element and configured to engage on a corresponding coupling element of a corresponding coupling part for the purpose of forming a coupling, the coupling elements being shaped like a hook; a wall surface provided on the inward directed side of the coupling element, wherein an entirety of the wall surface is provided at an angle of chamfer to the main throughflow direction of the coupling part, and wherein the wall surface partially follows the contour of the annular element; and a locking element configured to lock an arranged corresponding coupling part, wherein the locking element is provided with a spring.

2. The coupling part according to claim 1, wherein the angle of chamfer lies in the range of 2° to 25°.

3. The coupling part according to claim 1, further comprising a locating surface provided on the coupling element and directed substantially in the peripheral direction of the annular element, wherein the locating surface is provided at a locating angle to the main throughflow direction of the coupling part.

4. The coupling part according to claim 3, wherein the locating angle lies in the range of 2° to 20°.

5. The coupling part according to claim 3, wherein the locating angle is in the range of 5° to 15°.

6. The coupling part according to claim 3, wherein the locating angle is about 10°.

7. The coupling part according to claim 3, wherein the locating surface is provided at the location angle.

8. The coupling part according to claim 2, further comprising a locating surface provided on the coupling element and directed substantially in the peripheral direction of the annular element, wherein the locating surface is provided at a locating angle to the main throughflow direction of the coupling part, wherein the locating angle is in the range of 2° to 20°.

9. The coupling part according to claim 8, wherein the locating surface is provided at the location angle.

10. The coupling part according to claim 1, comprising at least six coupling elements.

11. The coupling part according to claim 1, wherein the angle of chamfer is in the range of 5° to 20°.

12. The coupling part according to claim 1, wherein the angle of chamfer is about 15°.

13. The coupling part according to claim 1, comprising at least eight coupling elements.

14. A hose coupling for coupling a hose or hose part, the coupling comprising two coupling parts, wherein each coupling part comprises: an annular element; a number of coupling elements arranged at or on the annular element and configured to engage on a corresponding coupling element of a corresponding coupling part for the purpose of forming a coupling, the coupling elements being shaped like a hook; and a wall surface provided on the inward directed side of the coupling element, wherein an entirety of the wall surface is provided at an angle of chamfer to the main throughflow direction of the coupling part, and wherein the wall surface partially follows the contour of the annular element; and a locking element configured to lock an arranged corresponding coupling part, wherein the locking element is provided with a spring.

15. A method for coupling a hose or hose part, comprising the steps of: providing at least two coupling parts, wherein each coupling part comprises: an annular element; a number of coupling elements arranged at or on the annular element and configured to engage on a corresponding coupling element of a corresponding coupling part for the purpose of forming a coupling, the coupling elements being shaped like a hook; and a wall surface provided on the inward directed side of the coupling element, wherein an entirety of the wall surface is provided at an angle of chamfer to the main throughflow direction of the coupling part, and wherein the wall surface partially follows the contour of the annular element; and coupling the coupling parts.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) Further advantages, features and details of the invention are elucidated on the basis of preferred embodiments thereof, wherein reference is made to the accompanying drawings, in which:

(2) FIGS. 1A-1B are views of two corresponding coupling parts for a hose coupling according to the invention;

(3) FIGS. 2A-2B are views of an alternative embodiment of two coupling parts for the hose coupling according to the invention; and

(4) FIGS. 3A-3B are views of further alternative coupling parts of a coupling according to the invention.

DETAILED DESCRIPTION

(5) Coupling part 2 is provided with annular element 4 on which a number of hook-like coupling elements 6 (FIGS. 1A-1B) are arranged. In the shown embodiment coupling part 2 is provided with eight coupling elements 6. Each individual coupling element 6 is provided with hook 10, locating surface 12, outer surface 14, end surface 16, contact surface 17, and a chamfered surface or wall surface 18. Further provided are rear surface 20 and outer surface 22.

(6) In use, flow occurs through coupling part 2 in throughflow direction A or conversely in opposite direction. In the shown embodiment locating surface 12 is provided at a locating angle α to throughflow direction A. In the shown embodiment chamfered surface 18 is further provided at an angle of chamfer β relative to throughflow direction A. In the shown embodiment the locating angle α is about 10° and angle of chamfer β is about 15°. It will be apparent that application of other angles is likewise possible according to the invention. It is thus for instance possible to dispense with a locating angle α, i.e. to apply a locating angle of about 0°.

(7) Further provided is locking element 24. In the shown embodiment locking element 24 is provided with spring element 26.

(8) If two individual coupling parts 2 are moved toward each other in throughflow direction A for the purpose of coupling the coupling parts 2, one of eight coupling elements 6 will push locking element 24 radially outward in the shown embodiment. After rotation in coupling direction B, relative to corresponding coupling part 2, locking element 24 will be released and spring back to a free position, and thereby prevent rotation back in opposite rotation direction of coupling direction B. A coupling 28 which can be realized in effective manner is hereby provided from two coupling parts 2.

(9) For the purpose of uncoupling the coupling 28, locking element 24 is moved out of the free position again, after which a rotation in opposite coupling direction B can be performed through a coupling angle of about 5-30°, so that uncoupling of two coupling parts 2 is possible. Owing to the locating angle α and angle of chamfer β, coupling parts 2 can be moved relatively easily relative to each other, and an efficient uncoupling is for instance possible.

(10) Alternative coupling part 30 (FIGS. 2A-2B) enables hose coupling 32. Coupling part 30 is particularly suitable for larger hose diameters and in the shown embodiment is provided with ten coupling elements 34. Coupling part 30 is otherwise provided with the same elements and the same operation as the above described coupling part 2.

(11) A further alternative coupling part 36 (FIGS. 3A-3B) enables coupling 38. Coupling part 36 is particularly suitable for even larger hose diameters. In this embodiment coupling part 36 is provided with twelve hook-like coupling elements 40. The operation of coupling part 36 for realizing coupling 38 is the same as that described for the above shown coupling parts 2, 30.

(12) In a currently preferred embodiment contact surface 17 is provided at angle γ to the throughflow surface at right angles to throughflow direction A. Coupling 28, 32, 38 can hereby be realized with some force, such that a robust coupling is obtained in practice. It is further possible to provide an additional sealing ring in conventional manner (not shown). Hook-like coupling elements 6, 34, 40 are preferably provided integrally with ring 4.

(13) The present invention is by no means limited to the above described preferred embodiments thereof. The rights sought are defined by the following claims, within the scope of which many modifications can be envisaged. It is thus for instance possible to provide a number of hook-like coupling elements 6, 34, 40 other than the shown eight, ten or twelve. The number of hook-like coupling elements 6, 34, 40 is preferably adapted to the diameter of annular element 4. Coupling elements 2, 30, 36 can be provided from aluminium or another suitable material.