CA1266961A - Worm-band fastener - Google Patents
Worm-band fastenerInfo
- Publication number
- CA1266961A CA1266961A CA000453082A CA453082A CA1266961A CA 1266961 A CA1266961 A CA 1266961A CA 000453082 A CA000453082 A CA 000453082A CA 453082 A CA453082 A CA 453082A CA 1266961 A CA1266961 A CA 1266961A
- Authority
- CA
- Canada
- Prior art keywords
- band
- worm
- housing
- worm screw
- screw
- 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.)
- Expired
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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Clamps And Clips (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
A word-band fastener including a band having screw-thread receiving slots adjacent one end and a housing of seamless single piece construction mounted adjacent the other end. A worm screw being rotatably mounted in said housing; the housing having a portion of part circular cross-section with said worm screw therein and a saddle portion by which it is mounted adjacent said other end of said band. The band having adjacent said other end a pair of spaced projections for contracting and restraining the front and rear edges of the saddle portion said projection being located centrally of the band. The one end of said band being insertable through an opening at the front of said housing so that the slots can engage with the worm screw.
A word-band fastener including a band having screw-thread receiving slots adjacent one end and a housing of seamless single piece construction mounted adjacent the other end. A worm screw being rotatably mounted in said housing; the housing having a portion of part circular cross-section with said worm screw therein and a saddle portion by which it is mounted adjacent said other end of said band. The band having adjacent said other end a pair of spaced projections for contracting and restraining the front and rear edges of the saddle portion said projection being located centrally of the band. The one end of said band being insertable through an opening at the front of said housing so that the slots can engage with the worm screw.
Description
9~1.
The present invention relates tG a worm-band fastener for fasten-ing the connection of hoses or the like.
In aeneral, a worm-band fastener comprises an elastic band having adjacent one end thereof screw-threaded slots, a housing fixed on the other end of the band and a rotatable worm screw mounted in the housing.
The band end provided with slots is inserted through the front opening of the housing and engaged with the worm screw to form a loop which serves to fasten an object, such as a hose. In such a worm-band fastener, there have been proposed various structures for retaining the housing on the band but any of them involves some defects which will interfere with their use.
In brief, prior art devices are di-fficult to assemble, are structurally weak, and generally ineffective in use. A more detailed discussion of prior art assemb1y will follow.
Accordinclly, it is an object of the present invention to provicle a worm-band fastener which can eliminate the above disadvantages associated with the prior art.
It is another object of the present invention to provide a worm-bancl fastener which can exert high fastener force by employing a worm screw housing which is simple in construction anci has high ri~idity.
It is a further obJect of the present invention to provicle a worm-band fastener in which the worm screw may be smoothly ticJhtenecl.
In accorclance with one embodilllent of the present invention, there is is provicleci a worm-bancl fastener compYisinc! a worm screw, a band and a housing for accon~ odatincJ the worm screw -therein. The housincl is fornned ~ ,,~ ,.,~,, .
~L2 ~ L
from a single blank of seamless tubular metal and has integrally formed a semi-cylindrical portion for accommodating the worm screw and a saddle portion to be mounted on one end of the band. The bank end on which the housing is to be mounted is provided with projections for embracing the front and rear edges of the underside of the saddle portion.
In another embodiment, the housing comprises a tapered semi-cylindrical portion in place of the semi-cylindrical portion of the first embodiment and, correspondingly, a tapered worm screw is employed.
The present invention will become more fully apparent from the claims and description as it proceeds in connection with the drawings.
Figures 1 through 3 are perspective views illustrating various prior art constructions For retaining a housing on a band in a worm-band fastener;
Figure 4 is a perspective view similar to Figs. 1 through 3 illustra-ting the construction according to the first embodiment of the present invention;
Figure 5 is a front view of the firs-t embodiment of the present invention;
Figure 6 is a side elevational view of Fig. 5;
Figure 7 is a sectional view taken alony line VII-VII in Fig. 5;
Figure ~ is an enlargeti vertical sèctional view o-f the essential parts in Fig. 5;
Fi~lure 9 is a sectional view taken along iine IX-IX in Fiy. ~;
Figure L0 is a perspective view of one end of the band;
Figure Ll is a front view of a worm-band fastener accordin~ to the ~ 6 9 ~.
second embodiment of the present invention; and Figure 12 -is a vertical sectional view of the essential parts of Fig. 11.
An example of such a structure is shown in Fig. 1 in which a saddle portion 2 of a housing 1 is provided with lugs 3 at the underside 2a thereof. The lugs 3 are symmetrically bent and extended through an aperture 5 in the band ~ to retain the housing 1 on the band 4. However, the structure has not been easy to assemble and yet failed to ensure consistency in quality. Furthermore, when the worm screw 6 is tightened, rigidity of the housing 1 becomes insufficient, resulting in spreading of the folded portion of the saddle portion 2 adapted for holding the band ~ or lifting of the underside 2a apart from the band ~. These problems have caused wrenching, tearing and/or twisting of the lugs 3 and consequently, incomplete engagement will result between the thread of the worm screw 6 and the slots of the band 4 to induce reduced or inoperative fastening force. If the lugs 3 are made larger, to withstand higher fastening force. both of -the housing 1 and the band 4 must be Made as thick and wide as possible, or on the contrary, if the lugs 3 are made thinner and narrower, crackintJ ancl breaking will result when the housing 1 i s heat treatecl after its formation.
Figure 2 shows another example of such a structure in which the unclerside 12a o~ -the sadclle portion 12 of the housing 11 is provided wi-th a trapezoid (as shown in the clrawing) or c;rcular projection 13 and a perforation 14 which engages the projection 13 in a -form--Fit-ting manner.
Also in this case, insufficient rigiclity of the housing 11 causes the ;`~, "
6~;9~1 same reduced or inoperative fastening force as those in the structure shown in Fig. 1.
Figure 3 shows a ~urther example in which the underside portions 22a of the saddle portion 22 of the housing 21 are bent toward the centre line of the band 23 until the respective ends thereof contact one another.
One end of the band 23 is inserted into the saddle portion 22 and then fixed by spot welding. Such a structure suffers from, in addition to the defects of the structures in Figs. 1 and 2, the problems that the housing 21 may shift in the longitudinal direction of the band 23 or come off due to possible incomplete welding.
Referring now to Figs.4 throuah 10 in which the first embodiment of the presen-t invention is shown, numeral 31 indicates a narrow elastic band having slots 32 stamped therein at reaul~lar pitches from one end 31a thereof.
The band 31 has ladjacent the other end 131b ~hereof two projections 33 and 34 provided in spaced opposing relationship to each other, as shown in Fig. 10. The projections 33 and 34 are formed by press bencling, drawing or like operation along notches provicled in the transverse direction of the band 31. The band 31 further has an elongated aper-ture 35 disposed in the loncJitudinal clirection of the bancl 31 between the projections 33 and 34. The slots 32 are alitlned in sequence from the encl 31a of the bancl, the last one thereof being followed by holes 36a and 36b which are pro-cJressively smaller in area than the slots 32. Numeral 41 indicates a housin~cJ which is tightly held between the proJections 33 antl 34 provicled adjacent the encl 31b of the band 31, and a worln screw 51 is inserted into the housincJ 41. The housin~ 41 is formed from a single blank of seamless .~
~l~6~
tubular metal and has semi-cylindrical p~rtion 42lfor accommodating the worm screw 51 therein and a saddle portion 43 adapted to be mounted on the band end 31k which are integrally formed by drawing operation. The underside 43a of the saddle member 43 has at the front and rear edges thereof raised corners 43b adapted to be engaged with the projections 33 and 34 of the band 31. The semi-cylindrical portion ~2 has at the front end 42_ thereof, an end wall 44 provided with a semi-circular guide aporture 44a to serve as a guide for rotatably supporting the cxtreme end 51a of the worm screw 51.
The worm screw S1 has a shank 52 extending rearwardly from the extreme end 51a and having screw threads 53. The shank 52 is provided at the raar end thereof ~ith a shoulder 5~ which is larger in diameter than the shank 52 adapted to be abutted against the rear end surface of the housing 41 when the worm screw 51 is inserted therein. A hexagon head 56 is provided through a flange 55 at the back of the shoulder 5~. The extreme end 51a of th~ worm screw may be formed w;th a peened or up-set portlon 57 to anlarge the diarneter of a portion extending out of the guide aporture ~a 90 as to prevant the worm screw 51 from coming out of tho housing ~1 when the worm-b~nd fastener i5 out of u~e.
Now the oporatlon of the worm-band Ea~tunor thus constructed is as follows. Tho sacddle portion ~3 oE the hou31ng ~1 is mounted on the end 31b o~ the band 31, thu ralsed corners ~3~. at tho front ancl rear edges of the undor~ide ~3_ belng ~lttingly placed between the projections 33 and 3~ o~ the band 31. Then the worm screw 51 is in~erted into the semi-cylindrical portion ~2 Orc the housing, the extreme and 51a being fitted into the guide aper-ture 44a of the semi~cylindrical portion 42. Thus the guide aperture 44a assures smooth positioning and rotation of the worm screw 51. The band 31 is wound around an object such as a hose and the end 31a is inserted into -the housing 41 through the front end thereof between the worm screw 51 and the band end 31b. The hexagon head 56 of the worm screw 51 is rotated as by a hexagon wrench or the like in the tightening direction. Then the screw threads 53 are engaged with the slots 32 and, as the worrn screw 51 is rotated, the band 31 is wound up to fasten -the hose or the like.
During the use of the worm-band fastener, reaction force will be produced from continued fastening action. Thus the projection 33 of the band end 31b presses the lower front corner 43b of the saddle portion 43, and the rear end surface of the semi-cylindrical portion ~2 presses the shoulder 54 of the worm screw 51. As a result, the housing 41 is pressed at the rear end surface of the semi-cylindrical portion 42 by the shoulder 54 of the worm screw 51 and the lower front corner 43b of the saddle portion ~3 is pressed through reaction force from the projection 33 on the band end 31b Furthermore, reaction force will be cleveloped from the band 31 and the worm screw 51 to the side wall of the semi-cylindrical portion 42 and the side wall ancl the underside 43a of the saddle portion 43, and torsional stress will be procluced on the housing 41 every time torque is appliecl to the worm screw 51. ~lowever, since the housing 41 has sufficient rigidity to ensure full tightening oP the band 31, wi-thout causing possible de~ormation of the housincJ 41 or loose or out of engagelllent of the worm screw 51. When the -threatls 53 are engaged w;th the sio-ts 32 the crests of ~L~ 6 9~
the threads 53 are projected out of the slots 32 into the aperture 35 of the band end 31b, resulting in more reliable engagement. As the last slot 32a is followed by the holes 36a and 36b which gradually become smaller, concentration of stress is prevented, thereby eliminating the possibility of breakage of the band 31 at the section of the last slot 32a which would be caused when the band 31 is bent around the hose or the 1ike. The worm screw 51 having the ex-treme end 51a thereof a hammered portion 57 will not slip out of the housing 41 while the -fastener is out of use, permitting ease of handling.
Figures 11 and 12 show another embodiment of the present invention which is different from the first embodiment in that a housing 61 and a worm screw 71 are forrned in a tapered confiyuration. Like parts are given like reference numbers and any further description will be omitted. The housing 61 is formed by drawing and has integra'lly Formed a tapered semi-:L5 cylinclrical portion 62 for accommodating the worm screw 71 therein and a saddle portion 63 to be mounted on the bancl end 31b. The housing 61 is tightly held between the -two projections 33 and 34. The unclersicle 63a oF
the sadclle portion 63 has at the front and rear edcJes thereof raised corners 63a adapted to be engagecl with the projections 33 and 34. The tapered semi-cylindricAl portion 62 has at the front end 62a thereof an encl wall 6~ provided with a senni-circular guicle aperture 64a For rotatab'ly supportin$J the extreme encl 71a of the worm screw 71.
The tapered worm screw 71 has a taperecl shank 72 extencling rear-warclly from the ex-trellle encl 71a ancl having screw threacls 73. The shank 72is provicled at the rear encl thereof with a shou'lder 74 which is larger in . . .
3L~ 9 ~ ~
diame-ter than the shank 72 and adapted to be abutted against the rear end surface of the housing 61 when the worm screw 71 is inserted therein. A
nexagon head 76 is provided throuah a flange 75 at the back of the shoulder 74. The extreme end 71a of the worm screw may be formed with a hammered portion 77 as in the case in the first embodiment.
The worm-band fastener thus constructed has substantially the same operational effect as that of the first embodiment and further permits smooth tightening operation of the worm screw. In other words, owing to the tapered semi-cylindrical portion 62 and the forwardly inclining inner configuration of the saddle portion 63, the worm screw 71 is drawn forward to therehy exert a pressing force to the tapered semi-cylindrical portion 62 and band end 31b when the worm screw 71 is rotated in the tightening direction. Now the threads 73 of the worm screw 71 are always maintained in tight engagement with -the inner periphery of the tapered semi-cylindrical portion 62 and the slots 32 of the band end 31b, resulting in smooth tight-ening operation of the worm screw 71.
While the invention has been described with reference to preferred embodiments thereof, it is to be understood tha-t moclifica-tions or variations may be easily made without depart;ng from the scope of this invention wh;ch is cleFined by the appenclecl claims.
..:.,.~ :,., ' ,~
The present invention relates tG a worm-band fastener for fasten-ing the connection of hoses or the like.
In aeneral, a worm-band fastener comprises an elastic band having adjacent one end thereof screw-threaded slots, a housing fixed on the other end of the band and a rotatable worm screw mounted in the housing.
The band end provided with slots is inserted through the front opening of the housing and engaged with the worm screw to form a loop which serves to fasten an object, such as a hose. In such a worm-band fastener, there have been proposed various structures for retaining the housing on the band but any of them involves some defects which will interfere with their use.
In brief, prior art devices are di-fficult to assemble, are structurally weak, and generally ineffective in use. A more detailed discussion of prior art assemb1y will follow.
Accordinclly, it is an object of the present invention to provicle a worm-band fastener which can eliminate the above disadvantages associated with the prior art.
It is another object of the present invention to provide a worm-bancl fastener which can exert high fastener force by employing a worm screw housing which is simple in construction anci has high ri~idity.
It is a further obJect of the present invention to provicle a worm-band fastener in which the worm screw may be smoothly ticJhtenecl.
In accorclance with one embodilllent of the present invention, there is is provicleci a worm-bancl fastener compYisinc! a worm screw, a band and a housing for accon~ odatincJ the worm screw -therein. The housincl is fornned ~ ,,~ ,.,~,, .
~L2 ~ L
from a single blank of seamless tubular metal and has integrally formed a semi-cylindrical portion for accommodating the worm screw and a saddle portion to be mounted on one end of the band. The bank end on which the housing is to be mounted is provided with projections for embracing the front and rear edges of the underside of the saddle portion.
In another embodiment, the housing comprises a tapered semi-cylindrical portion in place of the semi-cylindrical portion of the first embodiment and, correspondingly, a tapered worm screw is employed.
The present invention will become more fully apparent from the claims and description as it proceeds in connection with the drawings.
Figures 1 through 3 are perspective views illustrating various prior art constructions For retaining a housing on a band in a worm-band fastener;
Figure 4 is a perspective view similar to Figs. 1 through 3 illustra-ting the construction according to the first embodiment of the present invention;
Figure 5 is a front view of the firs-t embodiment of the present invention;
Figure 6 is a side elevational view of Fig. 5;
Figure 7 is a sectional view taken alony line VII-VII in Fig. 5;
Figure ~ is an enlargeti vertical sèctional view o-f the essential parts in Fig. 5;
Fi~lure 9 is a sectional view taken along iine IX-IX in Fiy. ~;
Figure L0 is a perspective view of one end of the band;
Figure Ll is a front view of a worm-band fastener accordin~ to the ~ 6 9 ~.
second embodiment of the present invention; and Figure 12 -is a vertical sectional view of the essential parts of Fig. 11.
An example of such a structure is shown in Fig. 1 in which a saddle portion 2 of a housing 1 is provided with lugs 3 at the underside 2a thereof. The lugs 3 are symmetrically bent and extended through an aperture 5 in the band ~ to retain the housing 1 on the band 4. However, the structure has not been easy to assemble and yet failed to ensure consistency in quality. Furthermore, when the worm screw 6 is tightened, rigidity of the housing 1 becomes insufficient, resulting in spreading of the folded portion of the saddle portion 2 adapted for holding the band ~ or lifting of the underside 2a apart from the band ~. These problems have caused wrenching, tearing and/or twisting of the lugs 3 and consequently, incomplete engagement will result between the thread of the worm screw 6 and the slots of the band 4 to induce reduced or inoperative fastening force. If the lugs 3 are made larger, to withstand higher fastening force. both of -the housing 1 and the band 4 must be Made as thick and wide as possible, or on the contrary, if the lugs 3 are made thinner and narrower, crackintJ ancl breaking will result when the housing 1 i s heat treatecl after its formation.
Figure 2 shows another example of such a structure in which the unclerside 12a o~ -the sadclle portion 12 of the housing 11 is provided wi-th a trapezoid (as shown in the clrawing) or c;rcular projection 13 and a perforation 14 which engages the projection 13 in a -form--Fit-ting manner.
Also in this case, insufficient rigiclity of the housing 11 causes the ;`~, "
6~;9~1 same reduced or inoperative fastening force as those in the structure shown in Fig. 1.
Figure 3 shows a ~urther example in which the underside portions 22a of the saddle portion 22 of the housing 21 are bent toward the centre line of the band 23 until the respective ends thereof contact one another.
One end of the band 23 is inserted into the saddle portion 22 and then fixed by spot welding. Such a structure suffers from, in addition to the defects of the structures in Figs. 1 and 2, the problems that the housing 21 may shift in the longitudinal direction of the band 23 or come off due to possible incomplete welding.
Referring now to Figs.4 throuah 10 in which the first embodiment of the presen-t invention is shown, numeral 31 indicates a narrow elastic band having slots 32 stamped therein at reaul~lar pitches from one end 31a thereof.
The band 31 has ladjacent the other end 131b ~hereof two projections 33 and 34 provided in spaced opposing relationship to each other, as shown in Fig. 10. The projections 33 and 34 are formed by press bencling, drawing or like operation along notches provicled in the transverse direction of the band 31. The band 31 further has an elongated aper-ture 35 disposed in the loncJitudinal clirection of the bancl 31 between the projections 33 and 34. The slots 32 are alitlned in sequence from the encl 31a of the bancl, the last one thereof being followed by holes 36a and 36b which are pro-cJressively smaller in area than the slots 32. Numeral 41 indicates a housin~cJ which is tightly held between the proJections 33 antl 34 provicled adjacent the encl 31b of the band 31, and a worln screw 51 is inserted into the housincJ 41. The housin~ 41 is formed from a single blank of seamless .~
~l~6~
tubular metal and has semi-cylindrical p~rtion 42lfor accommodating the worm screw 51 therein and a saddle portion 43 adapted to be mounted on the band end 31k which are integrally formed by drawing operation. The underside 43a of the saddle member 43 has at the front and rear edges thereof raised corners 43b adapted to be engaged with the projections 33 and 34 of the band 31. The semi-cylindrical portion ~2 has at the front end 42_ thereof, an end wall 44 provided with a semi-circular guide aporture 44a to serve as a guide for rotatably supporting the cxtreme end 51a of the worm screw 51.
The worm screw S1 has a shank 52 extending rearwardly from the extreme end 51a and having screw threads 53. The shank 52 is provided at the raar end thereof ~ith a shoulder 5~ which is larger in diameter than the shank 52 adapted to be abutted against the rear end surface of the housing 41 when the worm screw 51 is inserted therein. A hexagon head 56 is provided through a flange 55 at the back of the shoulder 5~. The extreme end 51a of th~ worm screw may be formed w;th a peened or up-set portlon 57 to anlarge the diarneter of a portion extending out of the guide aporture ~a 90 as to prevant the worm screw 51 from coming out of tho housing ~1 when the worm-b~nd fastener i5 out of u~e.
Now the oporatlon of the worm-band Ea~tunor thus constructed is as follows. Tho sacddle portion ~3 oE the hou31ng ~1 is mounted on the end 31b o~ the band 31, thu ralsed corners ~3~. at tho front ancl rear edges of the undor~ide ~3_ belng ~lttingly placed between the projections 33 and 3~ o~ the band 31. Then the worm screw 51 is in~erted into the semi-cylindrical portion ~2 Orc the housing, the extreme and 51a being fitted into the guide aper-ture 44a of the semi~cylindrical portion 42. Thus the guide aperture 44a assures smooth positioning and rotation of the worm screw 51. The band 31 is wound around an object such as a hose and the end 31a is inserted into -the housing 41 through the front end thereof between the worm screw 51 and the band end 31b. The hexagon head 56 of the worm screw 51 is rotated as by a hexagon wrench or the like in the tightening direction. Then the screw threads 53 are engaged with the slots 32 and, as the worrn screw 51 is rotated, the band 31 is wound up to fasten -the hose or the like.
During the use of the worm-band fastener, reaction force will be produced from continued fastening action. Thus the projection 33 of the band end 31b presses the lower front corner 43b of the saddle portion 43, and the rear end surface of the semi-cylindrical portion ~2 presses the shoulder 54 of the worm screw 51. As a result, the housing 41 is pressed at the rear end surface of the semi-cylindrical portion 42 by the shoulder 54 of the worm screw 51 and the lower front corner 43b of the saddle portion ~3 is pressed through reaction force from the projection 33 on the band end 31b Furthermore, reaction force will be cleveloped from the band 31 and the worm screw 51 to the side wall of the semi-cylindrical portion 42 and the side wall ancl the underside 43a of the saddle portion 43, and torsional stress will be procluced on the housing 41 every time torque is appliecl to the worm screw 51. ~lowever, since the housing 41 has sufficient rigidity to ensure full tightening oP the band 31, wi-thout causing possible de~ormation of the housincJ 41 or loose or out of engagelllent of the worm screw 51. When the -threatls 53 are engaged w;th the sio-ts 32 the crests of ~L~ 6 9~
the threads 53 are projected out of the slots 32 into the aperture 35 of the band end 31b, resulting in more reliable engagement. As the last slot 32a is followed by the holes 36a and 36b which gradually become smaller, concentration of stress is prevented, thereby eliminating the possibility of breakage of the band 31 at the section of the last slot 32a which would be caused when the band 31 is bent around the hose or the 1ike. The worm screw 51 having the ex-treme end 51a thereof a hammered portion 57 will not slip out of the housing 41 while the -fastener is out of use, permitting ease of handling.
Figures 11 and 12 show another embodiment of the present invention which is different from the first embodiment in that a housing 61 and a worm screw 71 are forrned in a tapered confiyuration. Like parts are given like reference numbers and any further description will be omitted. The housing 61 is formed by drawing and has integra'lly Formed a tapered semi-:L5 cylinclrical portion 62 for accommodating the worm screw 71 therein and a saddle portion 63 to be mounted on the bancl end 31b. The housing 61 is tightly held between the -two projections 33 and 34. The unclersicle 63a oF
the sadclle portion 63 has at the front and rear edcJes thereof raised corners 63a adapted to be engagecl with the projections 33 and 34. The tapered semi-cylindricAl portion 62 has at the front end 62a thereof an encl wall 6~ provided with a senni-circular guicle aperture 64a For rotatab'ly supportin$J the extreme encl 71a of the worm screw 71.
The tapered worm screw 71 has a taperecl shank 72 extencling rear-warclly from the ex-trellle encl 71a ancl having screw threacls 73. The shank 72is provicled at the rear encl thereof with a shou'lder 74 which is larger in . . .
3L~ 9 ~ ~
diame-ter than the shank 72 and adapted to be abutted against the rear end surface of the housing 61 when the worm screw 71 is inserted therein. A
nexagon head 76 is provided throuah a flange 75 at the back of the shoulder 74. The extreme end 71a of the worm screw may be formed with a hammered portion 77 as in the case in the first embodiment.
The worm-band fastener thus constructed has substantially the same operational effect as that of the first embodiment and further permits smooth tightening operation of the worm screw. In other words, owing to the tapered semi-cylindrical portion 62 and the forwardly inclining inner configuration of the saddle portion 63, the worm screw 71 is drawn forward to therehy exert a pressing force to the tapered semi-cylindrical portion 62 and band end 31b when the worm screw 71 is rotated in the tightening direction. Now the threads 73 of the worm screw 71 are always maintained in tight engagement with -the inner periphery of the tapered semi-cylindrical portion 62 and the slots 32 of the band end 31b, resulting in smooth tight-ening operation of the worm screw 71.
While the invention has been described with reference to preferred embodiments thereof, it is to be understood tha-t moclifica-tions or variations may be easily made without depart;ng from the scope of this invention wh;ch is cleFined by the appenclecl claims.
..:.,.~ :,., ' ,~
Claims (7)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A worm-band fastener including a band having screw-thread slots adjacent one end and a housing of seamless, single piece construction mounted adjacent the other end; a worm screw being rotatably mounted in the housing; the housing having a portion of part circular cross-section with the worm screw therein and a saddle portion by which it is mounted adjacent said other end of the band: said band having adjacent said other end a pair of spaced projections for contacting and restraining the front and rear edges of the saddle portion said projections being located centrally of the band, said one end of the band being insertable through an opening at the front of the housing so that the slots can engage with said worm screw.
2. A worm-band fastener according to claim 1 including, at the front of the housing, a guide means adapted for supporting one end of the worm screw.
3. A worm-band fastener as defined in claim 2 wherein the worm screw has one end projecting out of the guide means and enlarged so as to retain the screw.
4. A worm-band fastener according to claim 1, 2 or 3 including an elongated longitudinal aperture formed in the band between the projections into which the threads of the worm screw projects to increase the surface contact of the threads wit the screw-thread slots when the worm screw engages with the slots.
5. A worm-band fastener according to claim 1, 2 or 3 wherein said band has a plurality of holes adjacent that one of the slots which is furthest from said one end, the holes being in a direction away from the one of the slots, of progressively smaller area.
6. A worm-band fastener according to claim 1 wherein the worm screw is of generally tapered configuration and the portion of the housing of part circular cross-section is tapered correspondingly.
7. A worm-band fastener according to claim 6 wherein the portion of the housing of part circular cross-section is semi-circular in cross-section.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22131183A JPS60113810A (en) | 1983-11-22 | 1983-11-22 | Worm band clamp tool |
| JP58-221311 | 1983-11-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1266961A true CA1266961A (en) | 1990-03-27 |
Family
ID=16764806
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000453082A Expired CA1266961A (en) | 1983-11-22 | 1984-04-27 | Worm-band fastener |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JPS60113810A (en) |
| CA (1) | CA1266961A (en) |
| DE (1) | DE3418017A1 (en) |
| GB (1) | GB2150205B (en) |
| SE (1) | SE8405824L (en) |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2167481A (en) * | 1984-06-15 | 1986-05-29 | Mccabe Albert George | Metal hose clip |
| JPH0665886B2 (en) * | 1985-04-17 | 1994-08-24 | 日本発条株式会社 | Worm gear type hose clamp |
| JPH0421923Y2 (en) * | 1987-01-31 | 1992-05-19 | ||
| AT401081B (en) * | 1991-10-24 | 1996-06-25 | Plein Wagner Soehne | Connection of chimney-pipe parts in the axial direction with the aid of a wind-on sleeve |
| JPH0573104U (en) * | 1991-11-07 | 1993-10-05 | 株式会社日本アルミ | Expansion joint device protection structure |
| JPH0573107U (en) * | 1992-03-04 | 1993-10-05 | 株式会社日本アルミ | Expansion joints |
| DE59700767D1 (en) * | 1997-09-06 | 1999-12-30 | Rasmussen Gmbh | One-piece housing of a worm gear clamp |
| DE19948488A1 (en) * | 1999-10-07 | 2001-04-12 | Sebastian Storz | Height and side adjustable wall mounting |
| JP4896808B2 (en) * | 2007-04-27 | 2012-03-14 | 東海ゴム工業株式会社 | Hose clamp |
| JP5269860B2 (en) * | 2010-11-25 | 2013-08-21 | 株式会社高木製作所 | Method of assembling the clamping device for connection |
| JP5235244B1 (en) * | 2012-11-06 | 2013-07-10 | 株式会社そうぎょう | Strap band device for connection |
| CA2806965C (en) | 2012-11-06 | 2015-04-21 | Sogyo Co., Ltd. | A strap-band type connecting device |
| JP5198681B1 (en) * | 2012-11-06 | 2013-05-15 | 株式会社そうぎょう | Strap band device for connection |
| RU2533283C2 (en) * | 2013-02-21 | 2014-11-20 | Валерий Николаевич Пышкин | Split squeezing clamp |
| CN112747225A (en) * | 2019-10-29 | 2021-05-04 | 华为技术有限公司 | Staple bolt and electronic equipment |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR336007A (en) * | 1903-10-06 | 1904-02-24 | Edouard Cheneaux | Connection flange for pipes, etc. |
| US2386629A (en) * | 1943-05-31 | 1945-10-09 | Nat Lock Co | Hose clamp |
| GB660981A (en) * | 1944-08-10 | 1951-11-14 | Michael Thomas Usborne Collier | Improvements in or relating to hose clips or clamps |
| DE1185432B (en) * | 1957-04-13 | 1965-01-14 | Evan Meirion Arthur | Hose or similar clamp |
| DK106129C (en) * | 1959-11-04 | 1966-12-19 | Allmaenna Brandredskapsaffaere | Device for hose clamps. |
| FR1263975A (en) * | 1960-05-04 | 1961-06-19 | Hose clamp | |
| SE342685B (en) * | 1969-11-05 | 1972-02-14 | Allmaenna Brandredskapsaffaere | |
| FR2133241A5 (en) * | 1971-04-14 | 1972-11-24 | Schmitt Ludwig | |
| US3950830A (en) * | 1974-09-03 | 1976-04-20 | Standard-Thomson Corporation | Quick attachment and release worm gear type hose clamp |
| DE2800824C2 (en) * | 1978-01-10 | 1983-07-14 | Rasmussen Gmbh, 6457 Maintal | Worm drive clamp |
-
1983
- 1983-11-22 JP JP22131183A patent/JPS60113810A/en active Granted
-
1984
- 1984-04-27 CA CA000453082A patent/CA1266961A/en not_active Expired
- 1984-05-11 DE DE19843418017 patent/DE3418017A1/en not_active Ceased
- 1984-05-14 GB GB08412286A patent/GB2150205B/en not_active Expired
- 1984-11-20 SE SE8405824A patent/SE8405824L/en not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| SE8405824L (en) | 1985-05-23 |
| GB2150205B (en) | 1987-09-30 |
| JPS60113810A (en) | 1985-06-20 |
| DE3418017A1 (en) | 1985-05-30 |
| JPS6323405B2 (en) | 1988-05-16 |
| GB8412286D0 (en) | 1984-06-20 |
| SE8405824D0 (en) | 1984-11-20 |
| GB2150205A (en) | 1985-06-26 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |