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Clamping collar

A clamping sleeve, clamping surface technology, applied in the direction of friction clamping detachable fasteners, sleeve/socket connections, rod connections, etc., can solve the problem of increasing hook length, diameter increase, unreliable clamping, etc. problems, to prevent deformation, ensure integrity, and be easy to operate

Pending Publication Date: 2021-03-23
ESTAB CAILLAU SARL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the other hand, deformation of the rear fold of the hook often results in an "unfolding" of this fold, which increases the length of the hook
If this length increase is irreversible, the diameter of the collar increases and the clamping may be less reliable

Method used

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Examples

Experimental program
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Effect test

Embodiment Construction

[0035] see figure 1 , it can be seen that the clamping collar 1 has a strap 10 with a lug 12 at a first end 10A and a hook 14 at a second end 10B. Shown here is the collar in the open state, with the hook not hooked on the lug and with the ends 10A and 10B spaced apart. It will be understood that the band defines a cylindrical circumference centered on the axis A when the collar is closed by the hook on the lug.

[0036] In this case, the lug 12 comprises a double folded portion 12A, 12B projecting radially outwards with respect to the circumference of the band and attached at 12C to the end 10A of the band. The outer face of the front folded portion 12A has a reinforcing rib 12' which in this case extends to an extension 12'A of the first end 10A located in front of the lug.

[0037] The hook has a front wall 14A and a common portion 14B attached to the second end 10B of the strap in 14C. The front wall 14A is folded inwardly, that is to say towards the axis A, so as to be...

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PUM

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Abstract

A clamping collar comprises a metal belt (10) carrying a protruding lug (12) in the vicinity of a first end (10A) and a hook (14) in the vicinity of a second end (10B). The hook has a front wall (14A)and a common part (14B). The wall (14A) is intended to be retained behind the lug (12) while the hook (14) is hooked on the lug (12) to keep the collar in the clamped state. The common part (14B) links the front wall (14A) to the belt (10) and has a gripping surface (16) protruding radially outwardly and two lateral borders (18, 19) which extend axially on either side of the gripping surface by being radially set back from the gripping surface.

Description

technical field [0001] The present disclosure relates to a clamping collar that includes a metal strip with protruding lugs near a first end and hooks near a second end. Background technique [0002] Such clamping collars are used to clamp objects such as pipes fitted on end pieces, or two pipe sections joined together end-to-end or by fitting. [0003] The clamping collar may be used in environments that are subject to significant temperature changes, for example, outdoors or in the engine compartment of a vehicle or on the exhaust pipe of a vehicle engine. [0004] Collars of this type are known, for example, from patent applications EP 2 480 355 , EP 0 627 591 , EP 1 352 192 , FR 2 777 970 or US 5 353 478 . For clamping such a collar it is suitable to use pliers or the like, one jaw of which engages the rear of the hook and the other jaw engages the rear of the lug so as to bring the hook close to the lug until its leading edge passes over lug and hook behind it. Once ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L21/08
CPCF16B7/04F16L23/04F16L21/08F16L33/035F16L51/04F16B7/0406F16B2/06
Inventor 尼古拉斯·里格利特法布里斯·普雷沃
Owner ESTAB CAILLAU SARL