WO2016177499A1 - Collier de serrage - Google Patents

Collier de serrage Download PDF

Info

Publication number
WO2016177499A1
WO2016177499A1 PCT/EP2016/055510 EP2016055510W WO2016177499A1 WO 2016177499 A1 WO2016177499 A1 WO 2016177499A1 EP 2016055510 W EP2016055510 W EP 2016055510W WO 2016177499 A1 WO2016177499 A1 WO 2016177499A1
Authority
WO
WIPO (PCT)
Prior art keywords
clamp
clamping screw
housing
hose clamp
hose
Prior art date
Application number
PCT/EP2016/055510
Other languages
German (de)
English (en)
Inventor
Martin Hielscher
Original Assignee
Norma Germany Gmbh
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 Norma Germany Gmbh filed Critical Norma Germany Gmbh
Publication of WO2016177499A1 publication Critical patent/WO2016177499A1/fr

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
    • F16L33/00—Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses
    • F16L33/02—Hose-clips
    • F16L33/08—Hose-clips in which a worm coacts with a part of the hose-encircling member that is toothed like a worm-wheel

Definitions

  • the invention relates to a hose clamp with a clamp band and a clamp housing with the features of the preamble of claim 1.
  • Hose clamps are used in a variety of ways, in particular for fastening fluid lines to connecting pieces.
  • the hose clamp is arranged radially outward around the end of the fluid line and tensioned after attaching the fluid line to the connecting piece.
  • For clamping usually serves a clamping screw, which cooperates with its thread in an externally introduced in the clamp band threaded structure.
  • the clamping screw is rotatably but axially fixed in the clamp housing. Accordingly, the hose clamp is contracted or expanded upon actuation of the clamping screw.
  • a hose clamp is also referred to as a worm thread clamp.
  • DE 42 1 1 132 C2 describes a plug-on device for ensuring a predetermined torque when tightening a screw or the like, which has an end section which can be placed on a screw head and a second end section connected to this end section via a predetermined breaking point Type torque application surface is provided.
  • the screw is screwed with a commercial tool until the second end portion shears from the first end portion at the predetermined breaking point. This is a sign that the screw has been screwed in with the desired torque.
  • a clamping screw for a hose clamp which has an inner head part and an outer head part, which are connected to each other via a predetermined breaking point.
  • the outer head part tears off the inner head part.
  • At the inner headboard remains an attack surface for a screwdriver with attack surfaces that are inclined so that a further screwing the clamping screw is not possible, but the clamping screw can be unscrewed.
  • the invention is based on the object to provide a hose clamp that allows repeated use, with a defined torque can be limited. According to the invention this object is achieved by a hose clamp having the features of claim 1. Advantageous embodiments can be found in the subclaims.
  • the invention provides that the clamping screw in at least one radial direction outwardly guided against a spring force in the clamp housing is.
  • the radial direction refers to a radial direction with respect to the clamping screw.
  • an axial clamping force on the other hand, due to a flank angle of the thread of the clamping screw and / or the threaded structure and a radial force, which endeavors to push the clamping screw from the clamp band radially outward Shen. Contrary to this outward Shen directed radial direction now acts a spring force.
  • tightening the hose clamp and accordingly further increase in the acting on the clamping screw tightening torque increases not only the clamping force, but also in the radial direction outward acting on the clamping screw force until this force exceeds the spring force. Then the clamping screw moves radially outward Shen, and it comes to skipping a thread.
  • the clamping screw With a suitable choice of the spring force, the clamping screw will thus skip over the thread structure after reaching the desired torque, but before reaching a fractional torque.
  • the function of a torque clutch is achieved, which is maintained unchanged after repeated actuation.
  • a loosening and re-tightening the clamping screw is easily possible.
  • the radial direction extends in the engagement region of the clamping screw in the thread structure perpendicular to the clamp band.
  • a movement of the radial direction perpendicular to the clamp band already allows for a very short distance, namely after exceeding the thread depth, skipping and thus a torque limit.
  • the clamping screw has a trapezoidal thread.
  • a trapezoidal thread allows for a good interaction with the thread structure of the clamp band, since a thread base can be made relatively wide.
  • a flank angle can be relatively easily set such that corresponding radial forces occur. For example, a preferred flank angle between 45 ° and 60 ° to the groove bottom, which is parallel to the axial direction.
  • the clamping screw has a fine thread. This is a way by which the hose clamp dissolves in response to the torque limiting by skipping the clamping screw again, kept low.
  • the term fine thread is not strictly to DIN standard to understand, but should generally designate a thread with a low pitch.
  • a spring element is arranged in the clamp housing, which acts resiliently on the clamping screw. This spring element may be formed, for example, in the form of a leaf spring, which is positioned on the side facing away from the clamp band side of the clamping screw in the clamp housing and rests with bias on the clamping screw.
  • a housing wall of the clamp housing is designed such that it acts resiliently on the clamping screw. This can be achieved for example by a corresponding elasticity in the upper region of the clamp housing, wherein the clamping screw is at least partially in contact with an inner side of the housing wall. This relates in particular to an inside of the housing wall facing away from the spring band clamp.
  • At least one recess is formed in the side facing away from the clamp band side of the housing wall.
  • a recess or material weakening makes it relatively easy to introduce a targeted elasticity into the clamp housing at the desired location. Thus, a spring force and thus a desired torque can be set relatively accurately.
  • a plurality of recesses are formed next to one another in the axial direction in the housing wall. With several recesses can be a To achieve more uniform deformation of the clamp housing and thus specify the desired torque more accurately.
  • Fig. 1 is a side view of a hose clamp in a partially cut view
  • Fig. 2 shows a detail of a hose point in plan view.
  • FIG. 1 shows a hose clamp 1 with a clamp band 2.
  • a clamp housing 4 is fixed, through which a second end 5 of the clamp band 2 is passed.
  • a thread structure 6 is embossed on an outer side of the clamp band 2, at least in the region of the second end 5, a thread structure 6 is embossed.
  • a clamping screw 7 with an external thread 8 rotatably and axially fixed so arranged that the Au texwinde 8 cooperates with the threaded structure 6 of the clamp band 2. Turning the clamping screw 7 thus causes a further retraction of the second end 5 of the clamp band 2 and thus a contraction of the hose clamp 1 or conveys the second end 5 out of the clamp housing 4, so that the hose clamp 1 is expanded.
  • a spring element 9 is arranged in the clamp housing 4, which exerts a radially inwardly directed force on the clamping screw 7.
  • the clamping screw 7 is movably mounted in the clamp housing 4, wherein in particular a movement corresponding to a thread depth of Au ogewindes 8 of the clamping screw 7 is possible.
  • a limitation of the tightening torque is provided via a torque coupling, which allows repeated release and setting of the hose clamp 1 and ensures that even without torque wrench always the required torque can be achieved without the risk of the hose clamp 1 by too strong a moment to overload.
  • the use of a torque wrench can be dispensed with.
  • FIG. 2 shows a section of the hose clamp 1, in which the clamp housing 4 is designed to be elastically deformable by means of recesses 11 which are inserted in an upper side of a housing wall 12 of the clamp housing 4 facing away from the clamp band 2.
  • the clamping screw 7 is directly against the housing wall 12 and causes an elastic deformation as soon as the force acting in the radial direction 10 is sufficient to elastically deform the housing wall 12 until a thread of the clamping screw 7 is exceeded.
  • the clamp body itself serves as a spring element.
  • the desired tightening torque can be set relatively precisely, so that a response can be ensured before reaching a fracture torque.
  • the desired tightening torque targeted skipping a thread, whereby further tightening is prevented. Rather, a precise tightening the hose clamp is possible even after reopening without torque wrench.
  • the spring element can also be designed as a compression spring.
  • a pitch of the thread should be relatively small.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Clamps And Clips (AREA)

Abstract

L'invention concerne un collier de serrage comprenant une bande de collier (2) et un boîtier de collier (4), la bande de collier (2) comprenant une structure filetée (6) côté extérieur. La structure filetée coopère avec une vis de serrage (7) qui est montée dans le boîtier de collier (4). Afin de limiter le couple, la vis de serrage (7) est guidée de manière mobile dans le boîtier de collier (4) dans au moins une direction radiale (10) vers l'extérieur à l'encontre d'une force élastique.
PCT/EP2016/055510 2015-05-04 2016-03-15 Collier de serrage WO2016177499A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015106910.5 2015-05-04
DE102015106910.5A DE102015106910B3 (de) 2015-05-04 2015-05-04 Schlauchschelle

Publications (1)

Publication Number Publication Date
WO2016177499A1 true WO2016177499A1 (fr) 2016-11-10

Family

ID=55527918

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2016/055510 WO2016177499A1 (fr) 2015-05-04 2016-03-15 Collier de serrage

Country Status (2)

Country Link
DE (1) DE102015106910B3 (fr)
WO (1) WO2016177499A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113803547A (zh) * 2021-09-03 2021-12-17 安徽宏源钢构有限公司 可拆卸式酸液管道接口

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4993124A (en) * 1990-01-22 1991-02-19 Serge Ouimet Worm drive clamp with automatic spring lever
DE4231003A1 (de) 1992-09-16 1994-03-17 Bayerische Motoren Werke Ag Schraube
DE4211132C2 (de) 1992-04-03 1995-09-28 Rasmussen Gmbh Aufsteckbare Vorrichtung zur Sicherstellung eines vorbestimmten Drehmoments beim Anziehen einer Schraube oder dergleichen
KR20120086173A (ko) * 2011-01-25 2012-08-02 (주)동아금속 호스용 클램프

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE620374C (de) * 1933-02-23 1935-10-19 Hunt & Turner Ltd Schlauchbinder

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4993124A (en) * 1990-01-22 1991-02-19 Serge Ouimet Worm drive clamp with automatic spring lever
DE4211132C2 (de) 1992-04-03 1995-09-28 Rasmussen Gmbh Aufsteckbare Vorrichtung zur Sicherstellung eines vorbestimmten Drehmoments beim Anziehen einer Schraube oder dergleichen
DE4231003A1 (de) 1992-09-16 1994-03-17 Bayerische Motoren Werke Ag Schraube
KR20120086173A (ko) * 2011-01-25 2012-08-02 (주)동아금속 호스용 클램프

Also Published As

Publication number Publication date
DE102015106910B3 (de) 2016-11-03

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