GB2188362A - Plastics clamping strap device - Google Patents
Plastics clamping strap device Download PDFInfo
- Publication number
- GB2188362A GB2188362A GB08705898A GB8705898A GB2188362A GB 2188362 A GB2188362 A GB 2188362A GB 08705898 A GB08705898 A GB 08705898A GB 8705898 A GB8705898 A GB 8705898A GB 2188362 A GB2188362 A GB 2188362A
- Authority
- GB
- United Kingdom
- Prior art keywords
- retaining
- transverse
- strap
- latching hook
- fixing portion
- Prior art date
- Legal status (The legal status 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 status listed.)
- Granted
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
- F16L3/00—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets
- F16L3/22—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets specially adapted for supporting a number of parallel pipes at intervals
- F16L3/23—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets specially adapted for supporting a number of parallel pipes at intervals for a bundle of pipes or a plurality of pipes placed side by side in contact with each other
- F16L3/233—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets specially adapted for supporting a number of parallel pipes at intervals for a bundle of pipes or a plurality of pipes placed side by side in contact with each other by means of a flexible band
- F16L3/2332—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets specially adapted for supporting a number of parallel pipes at intervals for a bundle of pipes or a plurality of pipes placed side by side in contact with each other by means of a flexible band having a single plastic locking barb
Abstract
A plastics clamping strap device for embracing and holding cables, pipes and bunches of cables has an integral fixing portion (2) for press attachment to a connector pin, such as a screwthreaded pin or bolt, and a clamping strap portion (1) formed at the lower end of the fixing portion (2). The strap portion (1) is provided with uniformly spaced transverse portions (5) arranged transverse to the direction of the strap portion having a hook-like cross-section and which are engageable with a latching hook (7) also formed on the fixing portion (2). The transverse portions (5) are provided with retaining edges (6) which face towards the fixing portion (2) and which project above the strap portion (1) by an amount corresponding to the head height 'k' of the latching hook (7) so that the retaining edge (8) of the latching hook (7) can be pushed under the retaining edge (6) in the engagement operation. In addition the open gap 'd' between the retaining edge (6) of a transverse portion (5) and the rear wall (9) of the next following transverse portion (5) is somewhat smaller than the width 'b' of the head of the latching hook so that although the latter may be pressed into the passage 'd' by the application of a light force, it cannot be released again of its own accord after engagement of the hook (7) in to the retaining edge (6). <IMAGE>
Description
SPECIFICATION
Plastics clamping strap device
This invention relates to a plastics clamping strap device for embracing and holding one or more cables or pipes. Such a device usually has a fixing portion mounting on a screwthreaded pin or bolt and a clamping strap portion forwrapping around one or more cables or pipes. The clamping strap portion usually is attached to the fixing portion at one end thereof and has retaining elements spaced therealong transverse to the strap direction for engagement with a latching hook on the fixing portion.
In known clamping straps ofthis kind, the retaining elements are often in the form of transverse bars which are connected together by limb portions either at the centre (German laid-open application (DE-OS) No 31 43 775) or at the ends (German laid-open application (DE-OS) No 2847505) and which are hooked into what is referred to as holding claws. The clamping strap which is formed from transverse bars and web portions is tensioned after having been passed around the cable or bunch, until a transverse bar can just be pressed pastthetip of a claw, by means ofthe thumb, and, with a slight release of the clamping force, can be hooked into the groove in the claw.If the clamping strap isto be released again, itfirstly has to be retightened until the bar can be lifted out of the groove in the claw, over the tip thereof. This additional tightening operation when engaging the bar with the holding claw and when releasing the strap is found to be a disadvantage because it involves the application of an additional force. Furthermore, it is difficultto grip the end of the strap closely behind the holding claw, between a thumb and an index finger, and then pull it or press it towards the carrier plate.
There is thus a need for a generally improved clamping strap device with improved retaining and locking elements such that the operations of engaging the strap portion in the holding position and also releasing the strap are substantially improved.
According to the present invention there is provided a plastics clamping strap device for embracing and holding one or more cables or pipes, including a fixing portion for attachment, by pressing, to a connector pin, and a clamping strap portion, forwrapping around one or more cables or pipes, formed with and on the fixing portion at an end thereof which is lowermost in use, which clamping strap portion is provided with retaining elements uniformly spaced therealong transverse to the direction of the strap portion for engagement into a latching hook formed on the fixing portion, wherein the retaining elements aretransverse portions of hook-shaped cross-section, with retaining edges which face towards the fixing portion, when the strap portion is not attached around one or more cables or pipes, and which project proud of the strap portion by an amount corresponding to the height (k) of a head of the latching hook, and wherein the open gap 'd' between the retaining edge of a transverse portion and a rear wall of the adjacent transverse portion is less than the width 'b' of the head of the latching hook.The retaining elements in the device of the invention have the great advantage over known retaining bars that, when the clamping strap portion is being put into the engaged condition with the latching hook after having been firmly wrapped around the cable or bunch of cables, the latching hook can be pressed virtually like a wedge portion into the open gap between two adjacent transverse portions, while the resepctive retaining edge is first passed away somewhat from the oppositely disposed rearwall and, after passing the retaining edge ofthe latching hook, springs back into the original position and in so doing securely engages underthe retaining edge ofthe latching hook.
The operation of releasing the clamping strap portion is also substantially easierthan when dealing with the known straps with retaining bars.
For this purpose, it is sufficient simply to pull the free end ofthe strap portion upwardly. As a result, the engaged transverse portion is bent away from the latching hook and the open gap is increased in size until the two retaining edges can slide past against each other.
Preferably head edges of the transverse portions have a rounded configuration. This ensures that the head of the latching hook, which is also rounded, can be introduced into the open gap between two adjacent transverse portions, in a particularly simple manner.
Conveniently the rearwalls ofthetransverse portions incline towards the strap portion and the width 's' of the each transverse portion increases towards the strap portion. This ensures a good level ofstabilityforthe transverse portions.
Advantageously the latching hook has a retaining groove while the transverse portions have correspondingly rounded retaining surfaces to engage, one at a time, fully in the retaining groove.
This arrangement ensures that, in all inclined positions of the strap that can occur, the retaining edges of the transverse portions engage over a full area into the retaining groove of the latching hook.
Fora better understanding ofthe present invention, and to show how the same may be carried into effect, reference will now be made, by way of example, to the accompanying drawings, in which:
Figure lisa longitudinal sectional side view of a clamping strap device according to the invention, with integrated fixing portion for screwthreaded pins or bolts,
Figure 2 is a plan view of the device of Figure 1,
Figure 3 is a front view of the fixing portion of the device of Figures 1 and 2,
Figure 4shows a device of Figures 1 to 3 mounted on a screwthreaded pin or bolt, with the embracing strap portion in an engaged condition, with the smallest possible embracing diameter, Figure 5 is a longitudinal sectional view, to an enlarged scale, of a portion of the strap portion of
Figures 1 to 4, when it is being pressed on to a latching hook,
Figure 6shows the same portion of Figure 5 after engagement of a retaining edge,
Figure 7shows the same portion of Figure 5 when releasing the strap portion,
Figure 8shows a mounted clamping strap device as in Figure4, butwith the largest possible emb racing diameter, and
Figure9is a longitudinal sectional view to an enlarged scaleofa portion ofthestrap portion after engagement ofthe retaining edge with the latching hook.
The clamping strap device of the invention is made from hard-elastics plastics material and basically comprises an embracing strap portion 1 for holding cables,pipesand/orbunchesofcableswith different embracing diameters, and a fixing portion 2 for attachment, by pressing, to a connector pin, preferablyto ascrewthreaded pin or bolt 13which is welded or anchored in some other manner on a carrier plate or panel 14 (see Figures 4 and 7).
To this end the fixing portion 2 is provided with a mounting hole 3which in the illustrated embodimentisformed by arcuate clamping walls 4 which are resiliently connected together. It will be appreciated that other suitable clamping means for screwthreaded pins or bolts may be usedforthe mounting hole 3.
The strap portion 1 is formed or moulded on the fixing portion 2atthe lower end thereof, more particularly perpendicularly to the axis 'a' of the mounting hole3sothat,afterthefixing portion 2has been fitted on to the screwthreaded pin or bolt 13, the strap portion 1 projects parallel to the carrier plate or panel 14. Disposed on the strap portion 1 at uniform spacings therealong are transverse portions 5 5which are of a hook-like cross-section, with retaining edges 6 which face towards the fixing portion 2.Provided at the upper oppositely disposed end of the fixing portion 2 is a latching hook 7 which is rounded off upwardly, matches the retaining edges and hasa retaining edge8facing awayfrom the fixing portion 2. The retaining edges 6 ofthe transverse portions 5 can be engaged with the retaining edge 8 after the strap portion has been passed around a cable 15 or a bunch of cables 16 (see
Figures 4 and 7).
The retaining edges 6 project above the top side 17 ofthe strap portion 1 to such an extentthatthe retaining edge 8 of the latching hook7 can be pushed underthe retaining edge 6, in the engaging operation. In addition, the open gap 'd' between the retaining edge 6 of a transverse portion 5 and the rearwall 9 of the nextfollowing transverse portion 5 is desirably somewhat smaller than the width 'b' of the head of the latching hook7 so that although the latching hook 7 can be pressed into the passage 'd' by the application of a Iightforce, it cannot come open again of its own accord after engagement of the hook 7 with the retaining edge 6.
For the purposes of making it easierto insertthe rounded latching hook 7 intp the open gap 'd' between the retaining edge 6 of the transverse portion 5 which is to be used for the engagement action, and the oppositely disposed rearwall 9, the transverse portions 5 have rounded head edges 19, the curved surface of which runs downwardly to the retaining edge 6 on one side and runs into the rear wall 9 on the other side. In orderto impart the necessary stability and strength to the transverse portion 5, the rear walls 9 which face away from the fixing portion 2 incline towards the strap portion 1 preferably being inclined at an angle of700to 8050 thatthewidth 's' of the portions increases from the head edge 19 towards the strap portion 1.It will be appreciated that the frontwall 10 which is underthe retaining edge 6 is perpendiculartothetop side 17 of the strap portion, for reasons concerned with the procedure for removing the component from a mould, and thatthe strap portion 1 has a moulding-removal hole 20 perpendicularly below the retaining edge 6, corresponding to the length and width thereof.
As will be seen from Figure 5, the latching hook7 preferably is provided with a retaining groove or channel 11whilewhilethe whilethetransverseportionsShave correspondingly rounded retaining surfaces 12 which liefully in the retaining groove 11 in all inclined positions of the strap portion 1 that may occur (see Figures 6 and 9). This ensures optimum engagement of the clamping strap portion 1.
In orderto ensure lateral guidance forthe engaged clamping strap portion 1, guide lugs 18 are formed or moulded on the fixing portion 2, on both sides ofthe latching hook 7.
The mode of operation of the deviceforvarious diameters to be embraced is shown in Figures 4to 9.
Figu re 4 shows a clam ping strap device wh ich is mounted on a screwthreaded pin or bolt 13, with the embracing strap portion 1 in the engaged condition, extending around and holding a singlethin cable 15.
In this arrangement, the strap portion 1 firstly is laid around the cable 15 and pulled taut and then, as shown in Figure 5, pressed down in the direction indicated by the arrow so that the latching hook 7 penetrates with a wedgelike action between two adjacent transverse portions Sand bends the transverse portion S which is at the left in the drawing, somewhat towards the side, in the direction indicated by the small arrow. As soon as the retaining edge 8 of the hook 7 has passed beyond the constricted region between the retaining edge 6 and the rear wall 9, the left-hand transverse portion 5 springs back into its normal position.
In this case, the rounded retaining surface 12 snaps fully into the retaining groove 11 ofthe latching hook 7, thereby ensuring an absolutely secure latching action (see Figure 6).
If the strap portion 1 is to be released again, this is done in a simple manner by lifting the loose end 1' of the strap portion in the direction indicated bythe arrow in Figure 7. When this is done, the retaining edge 6 of the transverse portion 5 is pulled out of the retaining groove 11 until the above-mentioned edge 6 passes the retaining edge 8 of the hook 7. This retaining principle excludes automatic release or release due to an external force acting on the cable strap portion 1 extending around the cable.
Figure 8 shows a mounted clamping strap as in
Figure 6 which however extends around and holds a bunch of cables 16, of the larget possible diameter. In this case, the strap portion 1 meets the latching hook 7 at a severely inclined angle. By virtue of the rounded retaining surfaces 12 and the correspondingly curved retaining groove 11 however, the arrangement ensuresthatthe strap portion 1 is satisfactorily and positively locked in the latching hook 7, even in the inclined position referred to above, as can be seen from Figure 9. In orderto release the strap portion 1, the end 1 ' of the strap portion is pulled in the same manner as in Figure 7.
Claims (5)
1. A plastics clamping strap device for embracing and holding one or more cables or pipes, including a fixing portion for attachment, by pressing, to a connector pin, and a clamping strap portion, for wrapping around one or more cables or pipes, formed with and on the fixing portion at an end thereofwhich is lowermost in use, which clamping strap portion is provided with retaining uniformly spaced therealong transverse to the direction ofthe strap portion for engagement into a latching hook formed on the fixing portion, wherein the retaining elements are transverse portions of hook-shaped cross-section, with retaining edges which face towards the fixing portion, when the strap portion is not attached around one or more cables or pipes, and which project proud of the strap portion by an amnount corresponding to the height (k) of a head of the latching hook, and wherein the open gap 'd' between the retaining edge of a transverse portion and a rearwall of the adjacent transverse portion is less than the width 'b' of the head of the latching hook.
2. A device according to claim 1, wherein the transverse portions have rounded head edges, each having a curved surface which is extended on one side towards and as far as the associated retaining edge and which runs into the associated rear wall on the other side.
3. Adeviceaccordingtoclaiml orclaim2, wherein the rearwalls of the transverse portions, which rearwalls face away from the fixing portion, incline towards the strip portion, andthewidth of each transverse portion increases towards the strap portion.
4. A device according to any one of claims 1 to 3, wherein the latching hook has a retaining groove while the transverse portions have correspondingly rounded retaining surfaces which, when the strap portion is operatively wrapped around one or more cables or pipes, engage, one atatimefully inthe retaining groove of the latching hook.
5. A plastics clamping strap device for embracing and holding one or more cables or pipes, substantially as hereinbefore described and as illustrated in the accompanying drawings.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3608981A DE3608981C2 (en) | 1986-03-18 | 1986-03-18 | Plastic strap |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB8705898D0 GB8705898D0 (en) | 1987-04-15 |
| GB2188362A true GB2188362A (en) | 1987-09-30 |
| GB2188362B GB2188362B (en) | 1989-11-15 |
Family
ID=6296631
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8705898A Expired GB2188362B (en) | 1986-03-18 | 1987-03-12 | Plastics clamping strap device |
Country Status (4)
| Country | Link |
|---|---|
| DE (1) | DE3608981C2 (en) |
| FR (1) | FR2596132B1 (en) |
| GB (1) | GB2188362B (en) |
| IT (1) | IT1202624B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4860979A (en) * | 1987-03-11 | 1989-08-29 | A. Raymond | Adjustable fastening strap |
| US6807714B2 (en) * | 2002-03-04 | 2004-10-26 | Panduit Corp. | Cable tie having stepped down strap body teeth |
| CN105883188A (en) * | 2016-06-23 | 2016-08-24 | 国网山东省电力公司济阳县供电公司 | Computer room wire arranging device |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3911184A1 (en) * | 1989-04-06 | 1990-10-11 | Missel Gmbh & Co E | DEVICE FOR FIXING INSTALLATION PIPES |
| DE9420620U1 (en) * | 1994-12-23 | 1995-03-16 | Reinshagen Kabelwerk Gmbh | One-piece fastener |
| DE19653547C2 (en) * | 1996-12-20 | 1999-12-02 | Hans Simon | Tension strap with lever lock |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3054585A (en) * | 1960-07-19 | 1962-09-18 | Fred T Roberts & Company | Clamping means |
| DE2847505A1 (en) * | 1978-11-02 | 1980-05-14 | Itw Ateco Gmbh | ADJUSTABLE CLAMPING DEVICE FOR ATTACHING LONG OBJECTIVES TO A BRACKET |
| DE3143775A1 (en) * | 1981-11-04 | 1983-05-19 | United-Carr Gmbh, 6000 Frankfurt | DEVICE FOR FASTENING A PLASTIC ELEMENT WITH A CYLINDRICAL OPENING, IN PARTICULAR HOLDING PART |
| JPS6135520U (en) * | 1984-08-07 | 1986-03-05 | ポツプリベツト・フアスナ−株式会社 | wire cable ties |
-
1986
- 1986-03-18 DE DE3608981A patent/DE3608981C2/en not_active Expired - Fee Related
-
1987
- 1987-03-04 IT IT19570/87A patent/IT1202624B/en active
- 1987-03-12 GB GB8705898A patent/GB2188362B/en not_active Expired
- 1987-03-17 FR FR878703937A patent/FR2596132B1/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4860979A (en) * | 1987-03-11 | 1989-08-29 | A. Raymond | Adjustable fastening strap |
| US6807714B2 (en) * | 2002-03-04 | 2004-10-26 | Panduit Corp. | Cable tie having stepped down strap body teeth |
| CN105883188A (en) * | 2016-06-23 | 2016-08-24 | 国网山东省电力公司济阳县供电公司 | Computer room wire arranging device |
| CN105883188B (en) * | 2016-06-23 | 2018-01-26 | 国网山东省电力公司济阳县供电公司 | Computer room wire puts in order device |
Also Published As
| Publication number | Publication date |
|---|---|
| GB8705898D0 (en) | 1987-04-15 |
| DE3608981C2 (en) | 1994-11-24 |
| FR2596132A1 (en) | 1987-09-25 |
| GB2188362B (en) | 1989-11-15 |
| DE3608981A1 (en) | 1987-09-24 |
| FR2596132B1 (en) | 1990-11-02 |
| IT8719570A0 (en) | 1987-03-04 |
| IT1202624B (en) | 1989-02-09 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 732E | Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977) | ||
| PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 19980312 |