WO1992008901A1 - A quick-release fastener - Google Patents

A quick-release fastener Download PDF

Info

Publication number
WO1992008901A1
WO1992008901A1 PCT/GB1991/001976 GB9101976W WO9208901A1 WO 1992008901 A1 WO1992008901 A1 WO 1992008901A1 GB 9101976 W GB9101976 W GB 9101976W WO 9208901 A1 WO9208901 A1 WO 9208901A1
Authority
WO
WIPO (PCT)
Prior art keywords
sleeve
pawl member
stud
panel
support
Prior art date
Application number
PCT/GB1991/001976
Other languages
French (fr)
Inventor
Andrew Charles Walden Wright
Richard Herbert Bidwell
Original Assignee
Dzus Fastener Europe Limited
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 Dzus Fastener Europe Limited filed Critical Dzus Fastener Europe Limited
Publication of WO1992008901A1 publication Critical patent/WO1992008901A1/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
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B21/00—Means for preventing relative axial movement of a pin, spigot, shaft or the like and a member surrounding it; Stud-and-socket releasable fastenings
    • F16B21/02—Releasable fastening devices locking by rotation

Definitions

  • the present invention relates to a quick-release fastener and, more particularly, to a fastener which can be used for clamping together a panel and a support.
  • a fastener for a panel and a support comprises: a stud having a head and a screw-threaded shank; a sleeve having an axially extending slot and a flange at one end, the stud passing through the sleeve; a pawl member screw-threaded on to the stud, the pawl member being fixed against rotation relative to the sleeve and having a projection which passes through the axial slot in the sleeve; resilient means between the head and the pawl member for urging the pawl member away from the head of the stud; and an abutment on the sleeve for engaging the sides of an aperture in at least one of a panel and support in use to prevent further rotation of the sleeve relative to the panel and support, the stud being turned to draw the pawl member up the stud shank and so clamp the panel to the support.
  • the pawl and sleeve are passed through respective apertures in the panel and support and are then turned by rotation of the stud head or sleeve so that the projection on the pawl engages the rear surface of the support.
  • the invention provides a fastener which is both simple in construction and straightforward to use and in which the position of the pawl member is directly related to the position of the sleeve.
  • the fastener has a potentially low profile head.
  • the amount of pull-up of the pawl member can be altered by adjusting the lengths of the sleeve and stud, without having to alter the head profile.
  • the arrangement can be such that only tt of a turn is required to engage the fastener with a panel and support.
  • a detent may be provided on the flange for engagement with the aperture in the panel. This provides a further lock when the fastener is in position and provides an indication that the fastener is ready to be tightened.
  • the head of the stud may be knurled so that the fastener can be operated by hand.
  • it may be slotted so that a screw driver may be used or provided with a socket for an Allen key or the like.
  • Fig. 1 is an elevation of a first example
  • Fig. 2 is an underneath view of the first example
  • Fig. 3 is a sectional view along line III-III of Fig. 1;
  • Fig. 4 is an elevation of the stud of Fig. 1;
  • Fig. 5 is an end view of the stud of Fig. 1;
  • Fig. 6 is an elevation of the sleeve of Fig. 1;
  • Fig. 7 is an end view of the sleeve of Fig. 1;
  • Fig. 8 is an elevation of a second example;
  • Fig. 9 is an elevation of a third example;
  • Fig. 10 is an underneath view of the third example;
  • Fig. 11 is a top view of the third example;
  • Fig. 12 is an elevation of a fourth example;
  • Fig. 13 is a partial cross-sectional view on line XIII - XIII of Fig. 12;
  • Fig. 14 is an elevation of a fifth example;
  • Fig. 15 is an end view of the fifth example;
  • Fig. 16 is an end view of the pawl member of the fifth example;
  • Fig. 17 is a view from one end of the sleeve of the fifth example;
  • Fig. 18 is an elevation of the sleeve of the fifth example.
  • Fig. 19 is a view from the other end of the sleeve of the fifth example.
  • a fastener 1 comprising a stud 2, a sleeve 3, a pawl member 4, and a coil spring 5.
  • the stud 2 has a knurled head 6 and a screw threaded shank 7.
  • the sleeve 3 has a hollow generally cylindrical portion 8 with two, diametrically opposite external abutments 9 along its length and two, diametrically opposite, axially extending slots 10.
  • the sleeve 3 has a circular end flange 11 with a hole 12 through which the stud 2 passes.
  • the pawl member 4 has an internal screw thread which engages with the screw thread on the stud shank 7.
  • Two radially outwardly extending projections 13 are provided on the pawl member 4 which pass through the respective slots 10 in the sleeve 3 and which provide pawls.
  • the pawl member 4 also has a pair of relatively small shoulders 13' on its circumference.
  • a spring 5 is fitted within the sleeve 3 between the end flange 11 and the pawl member 4 around the stud shank, to increase friction between the threads on the stud 2 and the pawl member 4.
  • An alternative example of the invention is shown in Figure 8, in which the head 6 of the stud 2 is provided with slot(s) 15 for receiving a screwdriver tip.
  • the fastener 1 is passed through coinciding holes 16,17 in a panel P and support S which are to be clamped together, until the flange 11 abuts the front surface of the panel P.
  • the holes 16,17 are generally
  • the fastener can be turned to bring the projections 13 back into line with the apertures 16,17 so that the fastener can be pulled directly out of the holes 16,17.
  • the sleeve 3 is provided with a detent 18 on the under surface of the flange 11.
  • the detent 18 is double-D shaped and, in this example, is offset by 45° from the double-D shape created by the profile of the abutments 9 on the sleeve and the pawl projections 13.
  • the fastener of the third example is fitted through the double-D shaped apertures 16,17 in the panel P and support S.
  • the whole fastener 1 is turned through 45° as with the first and second examples described above.
  • the detent 18 then drops into the aperture 17 in the panel P which provides an indication that the fastener 1 is in position as well as providing a further lock for the fastener 1 in the panel P.
  • the stud 2 may be turned to draw the pawl member 4 up the stud shank 7 to clamp together the panel P and support S.
  • the fastener 1 On loosening of the pawl member 4, the fastener 1 may be withdrawn to remove the detent 18 from the aperture 17. The fastener 1 may then be turned through 45 ⁇ to align the pawls 13 and abutments 9 with the apertures 16,17 to allow the fastener to be completely removed.
  • mechanical means may be provided for retaining the pawl member 4 on the stud 2.
  • a circlip could be fitted under the pawl member 4 or the end of the shank 7 could be swaged over after fitting the pawl member 4 on the stud 2, so forming a retaining lip around the end of the shank 7.
  • a fourth example is shown in Figures 12 and 13.
  • the two abutments 9 are joined by a ring 19 at the nose portion of the sleeve 3. This allows the fastener to be fitted more easily to the apertures in the panel and support and also strengthens the whole assembly and the sleeve 3 in particular.
  • the head of the sleeve 3 is generally cup shaped and a washer 20 is interposed between the head 6 of the stud 2 and the flange portion 11 of the sleeve 3.
  • the spring 5 in this example bears against the washer 20.
  • the stud 2, pawl member 4, spring 5 and washer 20 can be fitted together as a subassembly, and then this sub assembly can be installed in the sleeve 3 by passing it through the head end of the sleeve 3.
  • the construction it may be possible to arrange the construction so that the pawl member 4 can be inserted between the abutments 9 and then slid away from the head end of the sleeve 3.
  • the spring 5 can then be inserted sideways as well and the stud 2 passed through the head end of the sleeve 3 and screwed into the pawl member 4; this construction does away with the need for the washer 20, but may be more time consuming in assembly.
  • a fifth example is shown in Figures 14 to 19.
  • This example is generally similar to that shown in Figures 9 to 11 and differs primarily in that, instead of having the shoulders 13' for preventing rotation of the pawl member 4 relative to the sleeve 3 in one direction, the pawl member 4 has a further pair of diametrically opposed minor projections 21, which are offset from the major projections 13.
  • Each abutment 9 on the sleeve 3 is cast with a slot 22 which runs from the head end of the sleeve 3 almost to the end of the respective abutment 9.
  • Each slot 22 is in fact stepped and has a wider portion 23 towards the head end of the sleeve 3.
  • the fastener is assembled by inserting the pawl member 4 between the abutments 9 towards the head end of the sleeve 3, each of the minor projections 21 being received in one of the relatively wide slots 23.
  • the pawl member 4 is then rotated so that the minor projections 21 are aligned with the relatively narrower slots 22 and the pawl member 4 then pushed down towards the nose end of the sleeve 3.
  • the spring 5 and stud 2 are then introduced into the fastener and the stud 2 screwed into the pawl member 4. Since the slots 22 are closed towards the nose member of the sleeve 3, the pawl member 4 is retained at all times within the fastener 1.
  • Each of the fourth and fifth examples has the advantage that on unscrewing the stud 2, the head 6 of the stud 2 will stand proud of the sleeve 3 when fully released, thus given a clear visual indication of the unscrewed condition and the fastener 1 cannot be disassembled simply by unscrewing the stud 2.
  • means may be provided for increasing the friction between the pawl member 4 and the shank 7 of the stud 2.
  • This could be in the form of a liner or sleeve, for example made of plastics, fitted within the pawl member, or perhaps a specially shaped spring within the threads in the pawl member, or even by carefully and deliberately distorting the threads on one or both of the pawl member 4 and the shank 7 of the stud 2.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Snaps, Bayonet Connections, Set Pins, And Snap Rings (AREA)
  • Dowels (AREA)

Abstract

In many pawl-type fasteners, there is often doubt as to the position of the pawl member since the pawl member is fixed behind the panel and support. Thus, there is provided a fastener (1) which has a screw-threaded stud (2) which passes through a sleeve (3) having at least one axially extending slot (10). A pawl member (4) is screw-threaded on to the stud (2), the pawl member (4) being fixed against rotation relative to the sleeve (3) and having a projection (13) which passes through the axial slot (10) in the sleeve (3). A spring (5) between the head (6) and the pawl member (4) urges the pawl member (4) away from the head (6) of the stud (2), and an abutment (9) on the sleeve (3) engages the sides of an aperture (16, 17) in at least one of a panel (P) and support (S) in use to prevent further rotation of the sleeve (3) relative to the panel (P) and support (S).

Description

A QUICK-RELEASE FASTENER
The present invention relates to a quick-release fastener and, more particularly, to a fastener which can be used for clamping together a panel and a support.
In many pawl-type fasteners which use friction between a pawl member and the screw on which the pawl member is mounted to rotate the pawl member, there is often doubt as to the position of the pawl member since the pawl member is fixed out of sight behind a panel and support being clamped together by the fastener. Typical of such fasteners is the fastener shown in EP-A-0365197 in which the pawl member is rotated relative to a housing so as to bring the pawls on the pawl member into engagement with the rear surface of a support. Whilst this fastener has stops to limit the rotation of the pawl member, there is still an ambiguity in the position of the pawl member under the panel and support.
According to the present invention, a fastener for a panel and a support comprises: a stud having a head and a screw-threaded shank; a sleeve having an axially extending slot and a flange at one end, the stud passing through the sleeve; a pawl member screw-threaded on to the stud, the pawl member being fixed against rotation relative to the sleeve and having a projection which passes through the axial slot in the sleeve; resilient means between the head and the pawl member for urging the pawl member away from the head of the stud; and an abutment on the sleeve for engaging the sides of an aperture in at least one of a panel and support in use to prevent further rotation of the sleeve relative to the panel and support, the stud being turned to draw the pawl member up the stud shank and so clamp the panel to the support.
In use, the pawl and sleeve are passed through respective apertures in the panel and support and are then turned by rotation of the stud head or sleeve so that the projection on the pawl engages the rear surface of the support.
The invention provides a fastener which is both simple in construction and straightforward to use and in which the position of the pawl member is directly related to the position of the sleeve. The fastener has a potentially low profile head. The amount of pull-up of the pawl member can be altered by adjusting the lengths of the sleeve and stud, without having to alter the head profile. The arrangement can be such that only tt of a turn is required to engage the fastener with a panel and support.
A detent may be provided on the flange for engagement with the aperture in the panel. This provides a further lock when the fastener is in position and provides an indication that the fastener is ready to be tightened.
The head of the stud may be knurled so that the fastener can be operated by hand. Alternatively, it may be slotted so that a screw driver may be used or provided with a socket for an Allen key or the like. Three examples of the present invention will now be described with reference to the accompanying drawings, in which:
Fig. 1 is an elevation of a first example; Fig. 2 is an underneath view of the first example; Fig. 3 is a sectional view along line III-III of Fig. 1;
Fig. 4 is an elevation of the stud of Fig. 1; Fig. 5 is an end view of the stud of Fig. 1; Fig. 6 is an elevation of the sleeve of Fig. 1; Fig. 7 is an end view of the sleeve of Fig. 1; Fig. 8 is an elevation of a second example; Fig. 9 is an elevation of a third example; Fig. 10 is an underneath view of the third example; Fig. 11 is a top view of the third example; Fig. 12 is an elevation of a fourth example;
Fig. 13 is a partial cross-sectional view on line XIII - XIII of Fig. 12; Fig. 14 is an elevation of a fifth example; Fig. 15 is an end view of the fifth example; Fig. 16 is an end view of the pawl member of the fifth example; Fig. 17 is a view from one end of the sleeve of the fifth example;
Fig. 18 is an elevation of the sleeve of the fifth example; and,
Fig. 19 is a view from the other end of the sleeve of the fifth example.
In figure 1 there is shown a fastener 1 comprising a stud 2, a sleeve 3, a pawl member 4, and a coil spring 5. The stud 2 has a knurled head 6 and a screw threaded shank 7. The sleeve 3 has a hollow generally cylindrical portion 8 with two, diametrically opposite external abutments 9 along its length and two, diametrically opposite, axially extending slots 10. The sleeve 3 has a circular end flange 11 with a hole 12 through which the stud 2 passes.
The pawl member 4 has an internal screw thread which engages with the screw thread on the stud shank 7. Two radially outwardly extending projections 13 are provided on the pawl member 4 which pass through the respective slots 10 in the sleeve 3 and which provide pawls. The pawl member 4 also has a pair of relatively small shoulders 13' on its circumference. When the fastener 1 is assembled, rotation of the pawl member 4 relative to the sleeve 3 in one direction is prevented by the projections 13 respectively engaging one side of a respective slot 10 and rotation in the other direction is prevented by the shoulders 13' respectively engaging the other side of a respective slot 10.
A spring 5 is fitted within the sleeve 3 between the end flange 11 and the pawl member 4 around the stud shank, to increase friction between the threads on the stud 2 and the pawl member 4. An alternative example of the invention is shown in Figure 8, in which the head 6 of the stud 2 is provided with slot(s) 15 for receiving a screwdriver tip.
In use, the fastener 1 is passed through coinciding holes 16,17 in a panel P and support S which are to be clamped together, until the flange 11 abuts the front surface of the panel P. The holes 16,17 are generally
Hdouble-DN shaped. The whole fastener 1 is then turned through 45°, by rotation of the stud which in turn carries the sleeve and pawl member, so that the projections 13 on the pawl member 4 fit behind the rear surface of the support S. Further rotation of the sleeve 3 and pawl 4 is prevented by virtue of the abutments 9 on the sleeve 3 engaging the sides of the apertures 16,17. Further turning of the stud 2 therefore draws the pawl member 4 up the shank 7 of the stud 2, thus drawing the projections 13 against the rear surface of the support S and clamping together the panel P and support S between the end flange
11 and projections 13. To release the panel from the support, the stud 2 is rotated in the opposite direction to cause the pawl member
4 to move down the stud 2. Then, once loose, the fastener can be turned to bring the projections 13 back into line with the apertures 16,17 so that the fastener can be pulled directly out of the holes 16,17.
In the third example shown in Figures 9 to 11, the sleeve 3 is provided with a detent 18 on the under surface of the flange 11. The detent 18 is double-D shaped and, in this example, is offset by 45° from the double-D shape created by the profile of the abutments 9 on the sleeve and the pawl projections 13.
In use, the fastener of the third example is fitted through the double-D shaped apertures 16,17 in the panel P and support S. Once the pawl member 4 has passed through the apertures 16,17 in the panel P and the support S, and the flange 11 abuts the panel P, the whole fastener 1 is turned through 45° as with the first and second examples described above. The detent 18 then drops into the aperture 17 in the panel P which provides an indication that the fastener 1 is in position as well as providing a further lock for the fastener 1 in the panel P. After the "click" of the detent 18 dropping in is felt, the stud 2 may be turned to draw the pawl member 4 up the stud shank 7 to clamp together the panel P and support S.
On loosening of the pawl member 4, the fastener 1 may be withdrawn to remove the detent 18 from the aperture 17. The fastener 1 may then be turned through 45β to align the pawls 13 and abutments 9 with the apertures 16,17 to allow the fastener to be completely removed.
In each of the above examples, mechanical means may be provided for retaining the pawl member 4 on the stud 2. For example, a circlip could be fitted under the pawl member 4 or the end of the shank 7 could be swaged over after fitting the pawl member 4 on the stud 2, so forming a retaining lip around the end of the shank 7.
A fourth example is shown in Figures 12 and 13. In this example, the two abutments 9 are joined by a ring 19 at the nose portion of the sleeve 3. This allows the fastener to be fitted more easily to the apertures in the panel and support and also strengthens the whole assembly and the sleeve 3 in particular. In the example shown, the head of the sleeve 3 is generally cup shaped and a washer 20 is interposed between the head 6 of the stud 2 and the flange portion 11 of the sleeve 3. The spring 5 in this example bears against the washer 20. In this example, the stud 2, pawl member 4, spring 5 and washer 20 can be fitted together as a subassembly, and then this sub assembly can be installed in the sleeve 3 by passing it through the head end of the sleeve 3. Alternatively, it may be possible to arrange the construction so that the pawl member 4 can be inserted between the abutments 9 and then slid away from the head end of the sleeve 3. The spring 5 can then be inserted sideways as well and the stud 2 passed through the head end of the sleeve 3 and screwed into the pawl member 4; this construction does away with the need for the washer 20, but may be more time consuming in assembly.
A fifth example is shown in Figures 14 to 19. This example is generally similar to that shown in Figures 9 to 11 and differs primarily in that, instead of having the shoulders 13' for preventing rotation of the pawl member 4 relative to the sleeve 3 in one direction, the pawl member 4 has a further pair of diametrically opposed minor projections 21, which are offset from the major projections 13. Each abutment 9 on the sleeve 3 is cast with a slot 22 which runs from the head end of the sleeve 3 almost to the end of the respective abutment 9. Each slot 22 is in fact stepped and has a wider portion 23 towards the head end of the sleeve 3. The fastener is assembled by inserting the pawl member 4 between the abutments 9 towards the head end of the sleeve 3, each of the minor projections 21 being received in one of the relatively wide slots 23. The pawl member 4 is then rotated so that the minor projections 21 are aligned with the relatively narrower slots 22 and the pawl member 4 then pushed down towards the nose end of the sleeve 3. The spring 5 and stud 2 are then introduced into the fastener and the stud 2 screwed into the pawl member 4. Since the slots 22 are closed towards the nose member of the sleeve 3, the pawl member 4 is retained at all times within the fastener 1.
Each of the fourth and fifth examples has the advantage that on unscrewing the stud 2, the head 6 of the stud 2 will stand proud of the sleeve 3 when fully released, thus given a clear visual indication of the unscrewed condition and the fastener 1 cannot be disassembled simply by unscrewing the stud 2.
In each of the examples described, as a further alternative, means may be provided for increasing the friction between the pawl member 4 and the shank 7 of the stud 2. This could be in the form of a liner or sleeve, for example made of plastics, fitted within the pawl member, or perhaps a specially shaped spring within the threads in the pawl member, or even by carefully and deliberately distorting the threads on one or both of the pawl member 4 and the shank 7 of the stud 2.

Claims

1. A fastener (1) for a panel (P) and a support (S) , the fastener comprising: a stud (2) having a head (6) and a screw-threaded shank (7); a sleeve (3) having an axially extending slot (10) and a flange (11) at one end, the stud
(2) passing through the sleeve (3) ; a pawl member (4) screw-threaded on to the stud (2), the pawl member (4) being fixed against rotation relative to the sleeve (3) and having a projection (13) which passes through the axial slot (10) in the sleeve (3); resilient means (5) between the head (6) and the pawl member (4) for urging the pawl member (4) away from the head (6) of the stud (2) ; and an abutment (9) on the sleeve (3) for engaging the sides of an aperture (16,17) in at least one of a panel (P) and support (S) in use to prevent further rotation of the sleeve (3) relative to the panel (P) and support (S) , the stud (2) being turned to draw the pawl member (4) up the stud shank (7) and so clamp the panel (P) to the support (S) .
2. A fastener according to claim 1, wherein the sleeve
(3) has two, diametrically opposite, axially extending slots (10) , the pawl member (4) having two diametrically opposed projections (13) each of which passes through a respective axial slot (10) .
3. A fastener according to claim 1 or claim 2, wherein the sleeve (3) has two, diametrically opposed abutments (9) for engaging the sides of an aperture (16,17) in at least one of a panel (P) and support (S) in use.
4. A fastener according to claim 3, wherein the two abutments (9) are joined at the nose end of the sleeve (3) .
5. A fastener according to any of claims l to 4, further comprising a washer (20) between the head (6) of the stud (2) and the sleeve (3) , the resilient means (5) comprising a coil spring (5) which bears against the washer (20) and the pawl member (4) .
6. A fastener according to any of claims 1 to 3, wherein the or each abutment (9) is provided with a slot (22) internally of the sleeve (3) for receiving a corresponding minor projection (21) on the pawl member, the or each slot (22) being closed towards the nose end of the sleeve (3) , by means of which the pawl member (4) is retained within the sleeve (3) .
7. A fastener according to any of claims 1 to 6, wherein the plate (11) of the sleeve (3) has a detent (18) for engaging the sides of an aperture (16,17) in at least one of a panel (P) and support (S) in use, the detent (18) being offset from the or each abutment (9) on the sleeve (3).
PCT/GB1991/001976 1990-11-12 1991-11-11 A quick-release fastener WO1992008901A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9024525.9 1990-11-12
GB909024525A GB9024525D0 (en) 1990-11-12 1990-11-12 A quick-release fastener

Publications (1)

Publication Number Publication Date
WO1992008901A1 true WO1992008901A1 (en) 1992-05-29

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ID=10685226

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Application Number Title Priority Date Filing Date
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WO (1) WO1992008901A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015024054A3 (en) * 2013-08-19 2016-07-14 Brian Investments Pty Ltd Releasable fastener
TWI736977B (en) * 2019-09-10 2021-08-21 英業達股份有限公司 Fixing structure

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2135463A2 (en) * 1968-12-17 1972-12-22 Launay Pierre Improvements to captive nuts and their accessories
FR2273967A1 (en) * 1974-06-04 1976-01-02 Itw De France WATERPROOF AND POSITIONED FIXING PART
EP0365197A2 (en) * 1988-10-18 1990-04-25 Camloc (U.K.) Limited Fixing device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2135463A2 (en) * 1968-12-17 1972-12-22 Launay Pierre Improvements to captive nuts and their accessories
FR2273967A1 (en) * 1974-06-04 1976-01-02 Itw De France WATERPROOF AND POSITIONED FIXING PART
EP0365197A2 (en) * 1988-10-18 1990-04-25 Camloc (U.K.) Limited Fixing device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015024054A3 (en) * 2013-08-19 2016-07-14 Brian Investments Pty Ltd Releasable fastener
TWI736977B (en) * 2019-09-10 2021-08-21 英業達股份有限公司 Fixing structure

Also Published As

Publication number Publication date
GB9024525D0 (en) 1991-01-02

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