NL2029476B1 - Conduit coupling, clamping arrangement, and clamping claw - Google Patents

Conduit coupling, clamping arrangement, and clamping claw Download PDF

Info

Publication number
NL2029476B1
NL2029476B1 NL2029476A NL2029476A NL2029476B1 NL 2029476 B1 NL2029476 B1 NL 2029476B1 NL 2029476 A NL2029476 A NL 2029476A NL 2029476 A NL2029476 A NL 2029476A NL 2029476 B1 NL2029476 B1 NL 2029476B1
Authority
NL
Netherlands
Prior art keywords
clamping
coupling
extension
engagement surface
hook portion
Prior art date
Application number
NL2029476A
Other languages
Dutch (nl)
Inventor
Bruin Johannes
Original Assignee
B B A Participaties B V
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by B B A Participaties B V filed Critical B B A Participaties B V
Priority to NL2029476A priority Critical patent/NL2029476B1/en
Application granted granted Critical
Publication of NL2029476B1 publication Critical patent/NL2029476B1/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L37/00—Couplings of the quick-acting type
    • F16L37/08—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members
    • F16L37/12—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members using hooks, pawls or other movable or insertable locking members
    • F16L37/20—Joints tightened by toggle-action levers

Abstract

The invention relates to a conduit coupling that comprises a first and second coupling member, and a clamping arrangement, wherein the first coupling member comprises a first tube and a first collar, and the second coupling member 5 comprises a second tube, a second. collar, and a circumferential clamping ridge, and the clamping arrangement comprises a claw that comprises an elongate claw body having a connecting portion, and a hook portion having an engagement surface for engaging the clamping ridge, wherein the claw 10 body extends in a first extension direction, and the hook portion extends in a second extension direction, and wherein the engagement surface is concave in a plane parallel to the first extension direction and parallel to the second extension direction towards the connecting portion, and 15 convex in a plane parallel to the first extension direction and transverse to the second extension direction towards the connecting portion.

Description

P140185NL00
Conduit coupling, clamping arrangement, and clamping claw
BACKGROUND
The invention relates to a conduit coupling, a clamping arrangement for use in the conduit coupling, and a clamping claw for use in the conduit coupling or the clamping arrangement.
A known conduit coupling comprises a first conduit coupling member having a first coupling end and a clamping arrangement, and a second conduit coupling member having a second coupling end and a circumferential clamping ridge. The clamping arrangement comprises two clamping claws that are pivotably connected to the first conduit coupling member at opposite sides thereof, and a lever that is pivotably connected to one of the clamping claws. The clamping claws can hook behind and engage with the clamping ridge, and the lever can be operated to clamp the first coupling end and the second coupling end together, to thereby couple the two conduit sections.
SUMMARY OF THE INVENTION
A disadvantage of the known clamping conduit coupling is that the coupling tolerances can be tight. The first conduit coupling member and the second conduit coupling member need to be accurately aligned prior to coupling them together. The coupling of the conduit coupling members is performed manually and the aligning of the conduit coupling members can be cumbersome, especially at sites that are difficult to reach and/or with little room to move.
It is an object of the present invention to provide a conduit coupling, a clamping arrangement, and a clamping claw with improved coupling tolerances.
According to a first aspect, the invention provides a conduit coupling for coupling a first conduit section and a second conduit section, wherein the conduit coupling comprises a first conduit coupling member configured for being arranged on the first conduit section, a second conduit coupling member configured for being arranged on the second conduit section, and a clamping arrangement configured for clamping the first and second conduit coupling members with respect to each other, wherein the first conduit coupling member comprises a first coupling tube with a longitudinal center axis, and that merges into a circumferential first collar, and the second conduit coupling member comprises a second coupling tube that merges into a circumferential second collar, wherein the second conduit coupling member comprises a circumferential clamping ridge on the second collar that outwardly protrudes with respect to the second coupling tube, and the clamping arrangement comprises a clamping claw that is provided outside the first coupling tube, and that comprises an elongate claw body having a connecting portion that is pivotably connected to the first coupling tube, and a hook portion having an engagement surface for engaging the clamping ridge, wherein the elongate claw body extends between the connecting portion and the hook portion in a first extension direction that is substantially parallel to the longitudinal center axis, and wherein the hook portion extends in a second extension direction substantially transverse to the first extension direction and towards the longitudinal center axis, and wherein the engagement surface is concave in a plane parallel to the first extension direction and parallel to the second extension direction towards the connecting portion, and the engagement surface is convex in a plane parallel to the first extension direction and transverse to the second extension direction towards the connecting portion.
To couple the first conduit member to the second coupling member, the second collar is brought in abutment with or in close proximity to the first collar near the clamping claw. Subsequently the hook portion of the clamping claw is hooked behind or engaged with the circumferential clamping ridge of the second conduit coupling member. The concave shape of the engagement surface in the plane parallel to the first extension direction and parallel to the second extension direction provides a hook that is securely engageable behind the clamping ridge. Due to the concave shape of the engagement surface, prior to or during the engagement of the hook portion behind the clamping ridge, the clamping ridge can rotate and/or translate with respect to the hook portion in the plane parallel to the first extension direction and parallel to the second extension direction. This allows the second coupling member to be at an angle or off center to the first coupling member during engaging of the clamping ridge by the clamping claw in the plane parallel to the first extension direction and parallel to the second extension direction.
Due to the convex shape of the engagement surface of the hook portion in the plane parallel to the first extension direction and transverse to the second extension direction, prior to or during the engagement of the hook portion behind the clamping ridge, the clamping ridge can rotate and/or translate with respect to the engagement surface of the hook portion of the clamping claw in the plane parallel to the first extension direction and transverse to the second extension direction. This allows for the rotation of the first conduit coupling member with respect to the second conduit coupling member in the plane parallel to the first extension direction and transverse to the second extension direction.
When, subsequently, the clamping arrangement clamps the first and second conduit coupling members together, the first conduit coupling member and the second conduit coupling member are forced into alignment with each other by the clamping action.
The conduit coupling, in particular the concave shape of the engagement surface in the plane parallel to the first extension direction and parallel to the second extension direction and the convex shape of the engagement surface of the hook portion in the plane parallel to the first extension direction and transverse to the second extension direction, ensures that the first conduit coupling member and the second conduit coupling member can be coupled to each other while they are at an angle with respect to each other, both in the plane parallel to the first extension direction and parallel to the second extension direction and in the plane parallel to the first extension direction and transverse to the second extension direction. As a result the invention provides a conduit coupling with improved coupling tolerances.
Furthermore, the double curved shape of the engagement surface, in particular the convex curved shape, ensures that the clamping ridge is engaged by a rounded surface, as a result of which the clamping ridge and/or the engagement surface of the hook portion of the clamping claw is less likely to get damaged during the clamping of the first conduit coupling member to the second conduit coupling member. As the clamping ridge is engaged by the rounded surface the point of contact between the hook portion and the clamping ridge is determined.
In an embodiment the engagement surface of the hook portion is continuous between the elongate claw body and the distal end of the hook portion that hooks into the clamping ridge. In an embodiment the hook portion of the clamping claw has full material between the end of the hook portion and the elongate claw body to provide a continuous engagement surface. In an embodiment at least the hook portion of the clamping claw is made by injection moulding, casting or additive manufacturing. The advantages of the invention can be best achieved when the engagement surface of the hook portion of the clamping claw is smooth and continuous. These 5 features of the engagement surface can be achieved by a one- piece engagement surface of full material, preferably manufactured by one of the above methods.
In an embodiment the elongate claw body comprises, at least partially, a U-shaped cross section. In an embodiment the clamping claw comprises at least one reinforcement rib behind the engagement surface. The U-shape and/or the reinforcement rib provide stiffness and strength to the clamping claw whereby the functioning and durability of the clamping claw can be improved.
In an embodiment the clamping ridge is convex in a plane parallel to or containing the longitudinal center axis away from the connecting portion. The shape of the engagement surface substantially corresponds to the shape of the clamping ridge in the plane parallel to the first extension direction and parallel to the second extension direction. The engagement surface engages the clamping ridge along a contact line, increasing the clamping surface between the clamping claw and the clamping ridge. The increased clamping surface reduces or distributes the clamping loads between the engagement surface and the clamping ridge, whereby the chance that the engagement surface of the hook portion of the clamping claw and/or the clamping ridge gets damaged under the clamping action is reduced.
In an embodiment the clamping arrangement comprises a lever, wherein the lever is pivotably connected to the first coupling tube and the clamping claw is at the connecting portion pivotably connected to the lever, wherein the lever is operable to clamp the first and second conduit coupling members with respect to each other by pivoting the lever in a lever pivot direction. The lever is a robust and straightforward manner to provide clamping action or functionality to the conduit coupling.
In an embodiment the clamping claw is a first clamping claw and the clamping arrangement comprises a second clamping claw, wherein the first clamping claw and the second clamping claw are arranged at opposite sides of the first coupling tube with respect to the longitudinal center axis.
In an embodiment thereof the first clamping claw and the second clamping claw are identical. By providing a clamping claw at opposite sides of the first coupling tube the first conduit coupling member and the second conduit coupling member can be coupled in a straightforward and easy manner.
According to a second aspect, the invention provides a clamping arrangement for use in the conduit coupling according to any one of the aforementioned embodiments, wherein the clamping arrangement comprises a clamping claw that comprises an elongate claw body having a connecting portion, and a hook portion having an engagement surface, wherein the elongate claw body extends between the connecting portion and the hook portion in a first extension direction, and wherein the hook portion extends in a second extension direction substantially transverse to the first extension direction, and wherein the engagement surface is concave in a plane parallel to the first extension direction and parallel to the second extension direction towards the connecting portion, and the engagement surface is convex in a plane parallel to the first extension direction and transverse to the second extension direction towards the connecting portion.
According to a third aspect, the invention provides a clamping claw for use in the conduit coupling or for use in the clamping arrangement according to any one of the aforementioned embodiments, wherein the clamping claw comprises an elongate claw body having a connecting portion, and a hook portion having an engagement surface, wherein the elongate claw body extends between the connecting portion and the hook portion in a first extension direction, and wherein the hook portion extends in a second extension direction substantially transverse to the first extension direction,
: and wherein the engagement surface is concave in a plane parallel to the first extension direction and parallel to the second extension direction towards the connecting portion, and the engagement surface is convex in a plane parallel to the first extension direction and transverse to the second extension direction towards the connecting portion.
The clamping arrangement and the clamping claw relate to the conduit coupling according to any one of the aforementioned embodiments and thus has at least the same technical advantages, which will not be repeated hereafter.
The various aspects and features described and shown in the specification can be applied, individually, wherever possible. These individual aspects, in particular the aspects and features described in the attached dependent claims, can be made subject of divisional patent applications.
BRIEF DESCRIPTION OF THE DRAWINGS
The invention will be elucidated on the basis of an exemplary embodiment shown in the attached drawings, in which:
Figure 1A and 1B are isometric views from respective opposite sides of a conduit coupling according to the invention having a first conduit coupling member, a second conduit coupling member, and a clamping arrangement;
Figure 2 is a transverse view of the first conduit coupling member of figures 1A and 1B;
Figure 3 is a longitudinal section view of the conduit coupling of figures 1A and 1B; and
Figure 4A and 4B are sectional views of a first clamping claw of the clamping arrangement of the first conduit coupling member.
DETAILED DESCRIPTION OF THE INVENTION
Figure 1A and 1B show a conduit coupling 1 for coupling a first conduit 2 section to a second conduit section 3. The conduit coupling 1 comprises a first conduit coupling member 10 that is connected, connectable to or merges into the first conduit section 2, and a second conduit coupling member 50 that is connected, connectable to or merges into the second conduit section 3. The conduit coupling 1 comprises a clamping arrangement 30 for clamping the first conduit coupling member 10 to the second conduit coupling member 50 in order to couple the first conduit section 2 to the second conduit section 3. The conduit sections 2, 3 can be a hose, tube or pipe and may be part of or integrated with an adapter piece or equipment such as a pump, a turbine or a valve, or couplings such as bends, T-pieces, Y-pieces or reducers.
The first conduit coupling member 10 comprises a first coupling tube 11 with a center axis that coincides with a longitudinal center axis Z of the conduit coupling 1. On the outer surface of the first coupling tube 11 a circumferential ridge 14 is formed that divides the first coupling tube 11 in a first connecting section 15 and a first coupling section 16.
The first connecting section 15 and most part of the first coupling section 16 of the first coupling tube 11 have a substantially constant diameter. The first coupling section 16 comprises or merges into a circumferential receiving collar or first collar 17 for receiving a distal end of the second conduit coupling member 50. The first collar 17 terminates in a circumferential distal edge 13 that is located in a notional first plane XY that is substantially transverse to the center axis Z. In this example the distal edge 13 forms a distal end face in the notional first plane
XY. The first collar 17 is generally convex outwards and has a proximal section 18 that is curved and flared away from the center axis Z. The proximal section 18 merges, via a circumferential first apex 20 into a distal section 19 that is curved back towards the center axis Z.
The first collar 17 defines a circumferential gasket seat 21 that encloses a ring shaped gasket 22 that has, in its normal state, a circular cross section. The first coupling tube 11 comprises multiple reinforcing ribs 25 that extend at the proximal section 18 of the first collar 17, substantially parallel to the center axis Z.
The first coupling tube 11, in this example, comprises two guard blocks 23. The guard blocks 23 are provided at or near the distal edge 13 of the first coupling tube 11, at two opposite sides of the first coupling tube 11 with respect to the center axis Z.
The second conduit coupling member 50 comprises a second coupling tube 51 having a center axis that, in a coupled state of the conduit coupling 1, coincides with the longitudinal center axis Z of the conduit coupling 1. The second coupling tube 51 comprises a second connecting section 54 that merges into an opposite second coupling section 53.
As best shown in figure 3, in a section view of the conduit coupling 1, the second connecting section 54 is substantially straight and extends parallel to the center axis Z. The second coupling section 53 comprises a second collar 52 that has an engaging or clamping section 55 that, from the second connecting section 54, curves away from the center axis Z over more than 90 degrees so that the clamping section 55 extends outwardly from the second connecting section 54 obliquely away from the center axis Z. The clamping section 55 further curves back in the opposite direction to a circumferential second apex 56. At the second apex 56 the clamping section 55 merges into an abutment section 57 that curves back towards the center axis Z.
The clamping section 55 defines a circumferential engagement ridge or clamping ridge 60 on the second collar 52 at the outer surface of the second coupling section 53 of the second coupling tube 51. The clamping ridge 60 outwardly protrudes with respect to the second coupling tube 51. The clamping section 55 defines a circumferential concave clamping gutter 61 at the outer surface of the second coupling section 53. The abutment section 57 defines a circumferential convex outer abutment surface 58 that corresponds to the first coupling section 16 of the first conduit coupling member 10, more particular that corresponds to the gasket 22 thereof.
As shown in figure 1A, 1B, 2 and 3, the clamping arrangement 30 comprises a ring 31 that surrounds the first coupling section 16 of the first coupling tube 11 and that is pivotably connected to the first coupling tube 11. The ring 31 1s composed of two substantially identical semicircular ring sections 33 that are connected to or connectable to each other at their respective ends to form the ring 31. Each ring section 33 is pivotably connected to the first coupling tube 11 by a pivot 32. Each pivot 32, in this example, is composed of a socket on the outer surface of the first coupling section 16, and a corresponding cam on the inner surface of the ring section 33 that is received in the socket. The pivots 32 are arranged at two opposite sides of the first coupling tube 11 with respect to the longitudinal center axis Z, such that the ring 31 is pivotable with respect to the first coupling tube 11 around a ring pivot axis P in a ring pivot direction N. The ring pivot axis P is substantially transverse to and intersects the center axis
Z.
The clamping arrangement 30 comprises a first securing member or first clamping claw 70 that is provided outside the first coupling tube 11. The first clamping claw 70 comprises a substantially elongate first claw body 71 having or merging into a connecting portion or first base end 72 that is pivotably connected to the first coupling tube 11, and at the opposite end a first hook portion 73 having an engagement surface 75 for engaging the clamping ridge 60. The first clamping claw 70 is at the first base end 72 pivotably connected to the ring 31 by a first claw pivot 34, which, in this example, is a pin-hole connection between the first clamping claw 70 and the ring 31. The first clamping claw 70 is pivotable with respect to the ring 31, and therefore with respect to the first coupling tube 11, around a first claw pivot axis C in a first claw pivot direction K. The first claw pivot axis C is substantially parallel to the ring pivot axis P.
As best shown in figure 3, the first claw body 71 extends between the first base end 72 and the first hook portion 73 in a first extension direction El that substantially coincides with the elongate direction of the claw body 71. The first hook portion 73 extends in a second extension direction E2 that is substantially transverse to the first extension direction and towards the longitudinal center axis Z.
The first engagement surface 75 of the first hook portion 73 is concave in a plane parallel to the first extension direction El and parallel to the second extension direction E2 towards the first base end 72. The plane parallel to the first extension direction El and parallel to the second extension direction E2 coincides with a plane of symmetry of the first clamping claw 70. The first engagement surface 75 of the first hook portion 73 is convex in a plane parallel to the first extension direction El and transverse to the second extension direction E2 towards the first base end 72.
The first engagement surface 75 of the first hook portion 73 comprises a saddle point S at the location where the concave and the convex curve of the engagement surface 75 intersect.
The saddle point S coincides with the point of the first engagement surface 75 in the plane of symmetry of the first clamping claw 70 that is located furthest away from the first base end 72.
The first engagement surface 75 curves away from the first extension direction El of the first claw body 71 over more than 90 degrees so that the first engagement surface 75 extends obliquely away from the first extension direction
El of the elongate first claw body 71. The concave shape of the first engagement surface 75 can be matched to the convex shape of the clamping ridge 60 in the plane parallel to the first extension direction E1 and parallel to the second extension direction E2, so that the engagement area between the engagement surface 75 and the clamping ridge 60 is increased, in order to reduce the point load therebetween.
The first hook portion 73 of the first clamping claw 70 has full material between the end of the hook portion 73 and the elongate claw body 71. The full material provides or ensures that the first engagement surface 75 is fluent and continuous while being curved in multiple planes or directions. In particular the first engagement surface 75 is continuous between the distal end or tip of the first hook portion 73 and the elongate claw body 71. The first clamping claw 70, or at least the first hook portion 73 thereof may be made by injection moulding, casting or additive manufacturing.
The first claw body 71 has, at the first base end 72 and between the first base end 72 and the first hook portion 73, a substantially U-shaped cross section that is open towards the first coupling tube 11. The open side of the first claw body 71 accommodates, at least partly, the first claw pivot 34 between the first base end 72 and the ring 31.
The first clamping claw 70 has multiple reinforcement ribs to provide stiffness and strength thereto. Two longitudinal reinforcement ribs 74 extend from the first base end 72 to the first hook portion 73 at opposite sides of the first claw body 71. Multiple hook reinforcement ribs 76 are arranged behind the engagement surface 75 at the hook portion 73.
The clamping arrangement 30 comprises a handle or lever 35 that is pivotably connected to the ring section 33 of the ring 31 by a lever pivot 43 which, in this example, is a pin-hole connection between the lever 35 and the ring 31. The lever 35 is pivotable with respect to the ring 31, and therefore with respect to the first coupling tube 11, around a lever pivot axis G in a lever pivot direction L. The lever pivot axis G that is substantially parallel to the ring pivot axis P and to the first claw pivot axis C.
The clamping arrangement 30 comprises a second securing member or second clamping claw 36 that is provided outside the first coupling tube 11. The second clamping claw 36 comprises a substantially elongate second claw body 37 that at a second base end 38 is pivotably connected to the lever 35 by a second claw pivot 44, which, in this example, is a pin-hole connection between the second clamping claw 36 and the lever 35. The second clamping claw 36 1s pivotable with respect to the lever 35, and therefore with respect to the ring 31 and the first coupling tube 11, around a second claw pivot axis F in a second claw pivot direction M. The second claw pivot axis F is substantially parallel to the ring pivot axis P, to the first claw pivot axis C, and to the lever pivot axis G. The second claw pivot axis F is spaced apart from the lever pivot axis G.
The elongate second claw body 37 merges at the opposite end into a second hook portion 39. The second claw body 37 and the second hook portion 39 have a substantially
U-shaped cross section that is open towards the first coupling tube 11. The legs of the U-shaped cross section of the second hook portion 39 curve away from the elongate direction of the second claw body 37 over more than 90 degrees so that they extend obliquely away from the longitudinal direction of the elongate second claw body 37. The legs of the second hook portion 39 form two substantially parallel engagement hooks 40.
The first clamping claw 70 and the second clamping claw 36 are located at opposite sides of the center axis Z and extend in a notional second plane YZ that is transverse to the notional first plane XY and that contains the center axis Z.
The first clamping claw 70 and the second clamping claw 36 are provided opposite to each other at the outer surface of the first coupling tube 11 at opposite sides of the first coupling tube 11 with respect to the center axis
Z. The first clamping claw 70 and the second clamping claw 36 extend over the first apex 20 of the collar outer surface 26 beyond the first coupling end 13.
In an alternative embodiment of the conduit coupling 1 the second clamping claw 36 1s identical to the first clamping claw 70, or at least the second hook portion 39 is identical to the first hook portion 73.
In this example, the first conduit section 2 is connected to the first conduit coupling member 10 by sliding it around the first connecting section 15 up to the ridge 14.
The first conduit section 2 can be further secured to the first conduit coupling member 10 by gluing it to the first connecting section 15, by clamping it around the first connecting section 15, for instance using a hose clamp, or by welding. The second conduit section 3 can be coupled to the second conduit coupling member 50 in a similar fashion.
The first conduit coupling member 10 is coupled to the second conduit coupling member 50 by inserting the second collar 52 of the second coupling tube 51 at least partly into the first collar 17 of the first coupling tube 11, preferably until the abutment surface 58 of the abutment section 57 is in abutment with the ring shaped gasket 22. Subsequently the first hook portion 73 of the first clamping claw 70 is hooked behind or engaged with the circumferential clamping ridge 60 of the second conduit coupling member 50, by hinging the first clamping claw 70 in the first claw pivot direction K towards the second conduit coupling member 50.
To accommodate the engagement of the first clamping claw 70 with the clamping ridge 60, the second coupling tube 51 is inserted into the first coupling tube 11 at an angle with respect to the center axis Z in the notional second plane
YZ. After the engagement of the first hook portion 73 with the clamping ridge 60, the second coupling tube 51 can be rotated or hinged in the notional second plane YZ with respect to the first coupling tube 11 around a notional pivot point at or near the saddle point S of the engagement surface 75, until the center axis of the first coupling tube 11 and the center axis B of the second coupling tube 51 are substantially aligned, or preferably coincide along the center axis Z of the conduit coupling 1.
The convexly curved shape towards the first base end 72 of the first engagement surface 75 of the first clamping claw 70, allows that the first clamping claw 70 is engaged with the clamping ridge 60 while the first conduit coupling member 10 and the second conduit coupling member 50 are at an angle with respect to each other in a notional third plane XZ, that is transverse to the notional first plane XY and to the notional second plane YZ, and that is transverse to and that contains the center axis Z. After the engagement of the first hook portion 73 with the clamping ridge 60, the second coupling tube 51 can be rotated or hinged in the notional third plane XZ with respect to the first coupling tube 11 around the notional pivot point at or near the saddle point S of the engagement surface 75, until the center axis of the first coupling tube 11 and the center axis of the second coupling tube 51 are substantially aligned, or preferably substantially coincide along the center axis Z of the conduit coupling 1.
Subsequently, with the elongate lever 35 in an idle state extending obliquely from the first coupling tube 11, the second hook portion 39 of the second claw 36 is hooked behind or engaged with the circumferential clamping ridge 60 of the second coupling tube 51, by hinging the second claw 36 in the second claw pivot direction M towards the second conduit coupling member 50. Then the conduit coupling 1 is brought into the coupled state by moving the lever 35 in the lever pivot direction L towards the first coupling tube 11 into a clamped state. The lever 35 pulls the engaged second claw 36 towards the first connecting section 15 in a direction that is substantially parallel to the first extension direction El and to the center axis Z. The pulling action of the lever 35 further forces the first coupling tube 11 and the second coupling tube 51 substantially in alignment with each other, or preferably with their respective center axes in coincidence with each other along the center axis Z of the conduit coupling 1.
In the coupled state of the conduit coupling 1 the abutment surface 58 of the abutment section 57 of the second coupling tube 51 is clamped against the gasket 22 of the first coupling tube 11. Under the clamping force the gasket 22 is clamped tightly between the abutment surface 58 and the gasket seat 21, forming a substantially watertight seal between the first conduit coupling member 10 and the second conduit coupling member 50. In the coupled state the cross section of the gasket 22 is deformed by the clamping force.
As best shown in figure 3, in the coupled state of the conduit coupling 1, the elongate first clamping claw 70 and the elongate second claw 36 extend substantially parallel to the first center axis Z and the second center axis B. The first extension direction El of the first clamping claw 70 is substantially parallel to the first center axis Z of the first coupling tube 11. The first hook portion 73 of the first clamping claw 70 and the second hook portion 39 of the second claw 36 both engage the circumferential clamping ridge 60.
The hook portion 73 extends in the second extension direction
E2 substantially transverse towards the first center axis Z.
At least in the noticnal second plane YZ the concave engagement surface 75 of the first hook portion 73 corresponds to and is in abutment with the convex clamping ridge 60. The engagement hooks 40 of the second hook portion 39 are at least partially in abutment with the clamping ridge 60.
Figure 4A and 4B are sectional views of the first hook portion 73 of the first clamping claw 70, as indicated by IV-IV’ in figure 3. The sections are in a notional plane that is parallel to the notional third plane XZ, and that extends through the circumferential clamping ridge 60 of the second coupling tube 51 and through the hook portion 73 of the first clamping claw 70.
In figure 4A the conduit coupling 1 is in the coupled state. As the center axis of the first conduit coupling member 10 and the center axis of the second conduit coupling member 50 coincide, the first clamping claw 70 is aligned with and substantially parallel to the center axis zZz. Therefore the first engagement surface 75 is convex towards the schematically indicated clamping ridge 60 and is orientated symmetrically with respect to the notional second plane YZ. The first engagement surface 75 abuts the clamping ridge 60 centrally in a straight manner.
In figure 4B the conduit coupling 1 is shown in an uncoupled state just prior to coupling the first coupling tube 11 to the second coupling tube 51, with the first engagement surface 75 in abutment with the clamping ridge 60.
The center axis of the first conduit coupling member 10 is at an angle with respect to the center axis of the second conduit coupling member 50. Therefore the first engagement surface 75 is orientated rotated with respect to the notional second plane YZ. The first engagement surface 75 abuts the clamping ridge 60 off-center at an angle. The convexly curved shape of the engagement surface 75 allows for the rotation of the first clamping claw 70 with respect to the clamping ridge 60, i.e. the convexly curved shape of the engagement surface 75 allows for the rotation of the first conduit coupling member 10 with respect to the second conduit coupling member 50.
It is to be understood that the above description is included to illustrate the operation of the preferred embodiments and is not meant to limit the scope of the invention. From the above discussion, many variations will be apparent to one skilled in the art that would yet be encompassed by the scope of the present invention.

Claims (12)

CONCLUSIESCONCLUSIONS 1. Leidingkoppeling voor het koppelen van een eerste leidingsectie en een tweede leidingsectie, waarbij de leidingkoppeling is voorzien van een eerste leidingkoppeldeel dat is geconfigureerd om te worden aangebracht aan het eerste leidingdeel, een tweede leidingkoppeldeel dat is geconfigureerd om te worden aangebracht aan de tweede leidingsectie, en een kleminrichting die is geconfigureerd voor het klemmen van de eerste en tweede leidingkoppeldelen ten opzichte van elkaar, waarbij het eerste leidingkoppeldeel is voorzien van een eerste koppelbuis met een longitudinale centrale as, en die overgaat in een omlopenede eerste kraag omvat, en het tweede leidingkoppeldeel een tweede koppelbuis die overgaat in een tweede kraag, waarbij het tweede leidingkoppeldeel een omlopende klemrand aan de tweede kraag omvat die buitenwaarts uitsteekt ten opzichte van de tweede koppelbuis, en de kleminrichting een klemklauw omvat die is verschaft buiten de eerste koppelbuis, en die een langwerpig klauwlichaam omvat dat een verbindgedeelte dat scharnierbaar is verbonden met de eerste koppelbuis, en een haakgedeelte met een aangrijpoppervlak voor het aangrijpen van de klemrand heeft, waarbij het langwerpige klauwlichaam zich tussen het verbindgedeelte en het haakgedeelte uitstrekt in een eerste uitstrekrichting die in hoofdzaak parallel is aan de longitudinale centrale as, en waarbij het haakgedeelte zich uitstrekt in een tweede uitstrekrichting die in hoofdzaak dwars op de eerste uitstrekrichting en richting de longitudinale centrale as is, en waarbij het aangrijpoppervlak hol is in een vlak dat parallel s aan de eerste uitstrekrichting en dat parallel is aan de tweede uitstrekrichting richting het verbindgedeelte, en het aangrijpoppervlak bol is in een vlak dat parallel is aan de eerste uitstrekrichting en dat dwars op de tweede uitstrekrichting is richting het verbindgedeelte.A pipe coupling for coupling a first pipe section and a second pipe section, the pipe coupling comprising a first pipe coupling part configured to be fitted to the first pipe part, a second pipe coupling part configured to be fitted to the second pipe section and a clamping device configured for clamping the first and second conduit coupling members relative to each other, the first conduit coupling member having a first coupling tube having a longitudinal central axis and merging into a circumferential first collar, and the second conduit coupling member a second coupling tube merging into a second collar, the second conduit coupling member comprising a circumferential clamping edge on the second collar projecting outwardly of the second coupling tube, and the clamping device comprising a clamping jaw provided outside the first coupling tube, and having a elongated claw body comprising a connecting portion pivotally connected to the first coupling tube, and a hook portion having an engagement surface for engaging the clamping edge, the elongated claw body extending between the connecting portion and the hook portion in a first extension direction that is substantially parallel to the longitudinal central axis, and wherein the hook portion extends in a second direction of extension that is substantially transverse to the first direction of extension and toward the longitudinal central axis, and wherein the engagement surface is concave in a plane parallel to the first direction of extension and that is parallel to the second direction of extension toward the connecting portion, and the engagement surface is convex in a plane parallel to the first direction of extension and transverse to the second direction of extension toward the connecting portion. 2. Leidingkoppeling volgens conclusie 1, waarbij het aangrijpoppervlak van het haakgedeelte continu is tussen het langwerpige klauwlichaam en het distale eind van het haakgedeelte.The conduit coupling of claim 1, wherein the engagement surface of the hook portion is continuous between the elongate claw body and the distal end of the hook portion. 3. Leidingkoppeling volgens conclusie 1 of 2, waarbij het haakgedeelte van de klemklauw vol materiaal heeft tussen het eind van het haakgedeelte en het langwerpige klauwlichaam om een continu aangrijpoppervlak te verschaffen.A conduit coupling according to claim 1 or 2, wherein the hook portion of the clamping jaw has full material between the end of the hook portion and the elongate jaw body to provide a continuous gripping surface. 4. Leidingkoppeling volgens één der voorgaande conclusies, waarbij ten minste het haakgedeelte van de klemklauw is gemaakt door spuitgieten, gieten of additieve vervaardiging.A pipe coupling according to any one of the preceding claims, wherein at least the hook portion of the clamping jaw is made by injection moulding, molding or additive manufacturing. 5. Leidingkoppeling volgens één der voorgaande conclusies, waarbij het langwerpige klauwlichaam, ten minste gedeeltelijk, een U-vormige dwarsdoorsnede omvat.5. Conduit coupling according to any one of the preceding claims, wherein the elongate claw body comprises, at least in part, a U-shaped cross-section. 6. Leidingkoppeling volgens één der voorgaande conclusies, waarbij de klemklauw versterkingsribben achter het aangrijpoppervlak omvat.A pipe coupling according to any one of the preceding claims, wherein the clamping claw comprises reinforcing ribs behind the engagement surface. 7. Leidingkoppeling volgens één der voorgaande conclusies, waarbij de klemrand bol is in een vlak dat parallel is aan of dat de longitudinale centrale as bevat weg van het verbindgedeelte.A conduit coupling according to any one of the preceding claims, wherein the clamping edge is convex in a plane parallel to or containing the longitudinal central axis away from the connecting portion. 8. Leidingkoppeling volgens één der voorgaande conclusies, waarbij de kleminrichting een hefboom omvat, waarbij de hefboom scharnierbaar is verbonden met de eerste koppelbuis en de klemklauw aan het verbindgedeelte scharnierbaar is verbonden met de hefboom, waarbij de hefboom werkzaam 1s om de eerste en tweede leidingkoppeldelen ten opzichte van elkaar te klemmen door het scharnieren van de hefboom in een hefboomscharnierrichting.8. A pipe coupling according to any one of the preceding claims, wherein the clamping device comprises a lever, wherein the lever is hingedly connected to the first coupling pipe and the clamping claw at the connecting portion is pivotally connected to the lever, wherein the lever is operatively connected to the first and second pipe coupling parts. clamped relative to each other by pivoting the lever in a lever pivot direction. 9. Leidingkoppeling volgens één der voorgaande conclusies, waarbij de klemklauw een eerste klemklauw is en de kleminrichting een tweede klemklauw omvat, waarbij de eerste klemklauw en de tweede klemklauw aan tegengestelde zijden van de eerste koppelbuis ten opzichte van de longitudinale centrale as zijn aangebracht.A pipe coupling according to any one of the preceding claims, wherein the clamping jaw is a first clamping jaw and the clamping device comprises a second clamping jaw, the first clamping jaw and the second clamping jaw being arranged on opposite sides of the first coupling tube relative to the longitudinal central axis. 10. Leidingkoppeling volgens conclusie 9, waarbij de eerste klemklauw en de tweede klemklauw identiek zijn.A pipe coupling according to claim 9, wherein the first clamping jaw and the second clamping jaw are identical. 11. Kleminrichting voor gebruik in de leidingkoppeling volgens één der conclusies 1-10, waarbij de kleminrichting een klemklauw omvat die een langwerpig klauwlichaam omvat dat een verbindgedeelte, en een haakgedeelte met een aangrijpoppervlak heeft, waarbij het langwerpige klauwlichaam zich tussen het verbindgedeelte en het haakgedeelte uitstrekt in een eerste uitstrekrichting, en waarbij het haakgedeelte zich uitstrekt in een tweede uitstrekrichting die in hoofdzaak dwars op de eerste uitstrekrichting is, en waarbij het aangrijpoppervlak hol is in een vlak dat parallel is aan de eerste uitstrekrichting en dat parallel is aan de tweede uitstrekrichting richting het verbindgedeelte, en het aangrijpoppervlak bol is in een vlak dat parallel is aan de eerste uitstrekrichting en dat dwars op de tweede uitstrekrichting is richting het verbindgedeelte.A clamping device for use in the pipe coupling according to any one of claims 1-10, wherein the clamping device comprises a clamping jaw comprising an elongate claw body having a connecting portion, and a hooking portion having an engagement surface, the elongate claw body being located between the connecting portion and the hooking portion extending in a first direction of extension, and wherein the hook portion extends in a second direction of extension that is substantially transverse to the first direction of extension, and wherein the engagement surface is concave in a plane parallel to the first direction of extension and which is parallel to the second direction of extension toward the connecting portion, and the engagement surface is convex in a plane parallel to the first direction of extension and transverse to the second direction of extension toward the connecting portion. 12. Klemklauw voor gebruik in de leidingkoppeling volgens één der conclusies 1-10, of voor gebruik in de kleminrichting volgens conclusie 11, waarbij de klemklauw een langwerpig klauwlichaam omvat dat een verbindgedeelte, en een haakgedeelte met een aangrijpoppervlak heeft, waarbij het langwerpige klauwlichaam zich tussen het verbindgedeelte en het haakgedeelte uitstrekt in een eerste uitstrekrichting, en waarbij het haakgedeelte zich uitstrekt in een tweede uitstrekrichting die in hoofdzaak dwars op de eerste uitstrekrichting is, en waarbij het aangrijpoppervlak hol is in een vlak dat parallel is aan de eerste uitstrekrichting en dat parallel is aan de tweede uitstrekrichting richting het verbindgedeelte, en het aangrijpoppervlak bol is in een vlak dat parallel is aan de eerste uitstrekrichting en dat dwars op de tweede uitstrekrichting is richting het verbindgedeelte.A clamping jaw for use in the pipe coupling according to any one of claims 1-10, or for use in the clamping device according to claim 11, wherein the clamping jaw comprises an elongated claw body having a connecting portion, and a hook portion having an engagement surface, the elongated claw body being extending between the connecting portion and the hook portion in a first extension direction, and wherein the hook portion extends in a second extension direction that is substantially transverse to the first extension direction, and wherein the engagement surface is concave in a plane parallel to the first extension direction and that is parallel to the second direction of extension toward the connecting portion, and the engagement surface is convex in a plane parallel to the first direction of extension and transverse to the second direction of extension toward the connecting portion.
NL2029476A 2021-10-20 2021-10-20 Conduit coupling, clamping arrangement, and clamping claw NL2029476B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
NL2029476A NL2029476B1 (en) 2021-10-20 2021-10-20 Conduit coupling, clamping arrangement, and clamping claw

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL2029476A NL2029476B1 (en) 2021-10-20 2021-10-20 Conduit coupling, clamping arrangement, and clamping claw

Publications (1)

Publication Number Publication Date
NL2029476B1 true NL2029476B1 (en) 2023-05-16

Family

ID=79270273

Family Applications (1)

Application Number Title Priority Date Filing Date
NL2029476A NL2029476B1 (en) 2021-10-20 2021-10-20 Conduit coupling, clamping arrangement, and clamping claw

Country Status (1)

Country Link
NL (1) NL2029476B1 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2701148A (en) * 1949-08-17 1955-02-01 Lanninger Karl Ludwig Pipe coupling
DE1046964B (en) * 1957-11-07 1958-12-18 Roehrenwerk Hook strap for pipe couplings
DE1173744B (en) * 1953-05-19 1964-07-09 Alvenius Ind Ab Knee lever lock for quick coupling of two pipe ends
DE8229357U1 (en) * 1982-10-20 1983-02-17 Conrad Pollmann Norddeutsche Karosseriefabrik u. Pumpenbau GmbH, 2800 Bremen (QUICK) COUPLING FOR TUBES AND FITTINGS OF GROUNDWATER SILLING SYSTEMS

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2701148A (en) * 1949-08-17 1955-02-01 Lanninger Karl Ludwig Pipe coupling
DE1173744B (en) * 1953-05-19 1964-07-09 Alvenius Ind Ab Knee lever lock for quick coupling of two pipe ends
DE1046964B (en) * 1957-11-07 1958-12-18 Roehrenwerk Hook strap for pipe couplings
DE8229357U1 (en) * 1982-10-20 1983-02-17 Conrad Pollmann Norddeutsche Karosseriefabrik u. Pumpenbau GmbH, 2800 Bremen (QUICK) COUPLING FOR TUBES AND FITTINGS OF GROUNDWATER SILLING SYSTEMS

Similar Documents

Publication Publication Date Title
AU2012326295B2 (en) Tool for coupling fluid lines
US7163238B1 (en) Connector for flexible and semi-rigid pipings
US3145035A (en) Pipe coupling having a flexible sealing lip
US10203058B2 (en) Reverse barb fluid connector and method of fluid connection
US10352488B2 (en) Connection system for connecting PEX tubing to a fitting which includes a clamp
US144997A (en) Improvement in hose-couplings
JP2000515953A (en) Quick connection type coupling
CS277632B6 (en) Dismountable device for tight and quick connecting of a pipe to a hose
BR112012013213B1 (en) IMPROVED Grease Coupler
US20040164550A1 (en) Method and apparatus for connecting coupler fittings to conduit sections
US7954356B1 (en) PEX crimping tool
NL2029476B1 (en) Conduit coupling, clamping arrangement, and clamping claw
US4722555A (en) Quick-connect coupling having heads unified with pipe
KR200491729Y1 (en) T-type crimped piping connector
CN209385877U (en) Quick connector
NL2029475B1 (en) Conduit coupling, conduit coupling member, and conduit
US20030127851A1 (en) Auto lock coupling with assymetrically-shaped gasket
US20200278060A1 (en) Hydraulic hose clamp
US5924744A (en) Pipe coupling
US2821411A (en) Pipe couplings
US325686A (en) Pipe-coupling
US317030A (en) Pipe-coupling
WO2007019270A2 (en) Connector for flexible and semi-rigid pipings
US3585703A (en) Tool for joining soil pipe
US377075A (en) Fbank a