EP0085631A1 - Safety hooks - Google Patents
Safety hooks Download PDFInfo
- Publication number
- EP0085631A1 EP0085631A1 EP83400216A EP83400216A EP0085631A1 EP 0085631 A1 EP0085631 A1 EP 0085631A1 EP 83400216 A EP83400216 A EP 83400216A EP 83400216 A EP83400216 A EP 83400216A EP 0085631 A1 EP0085631 A1 EP 0085631A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- latch
- hook
- opening
- spout
- lock
- 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.)
- Withdrawn
Links
- 210000003323 beak Anatomy 0.000 claims description 5
- 210000003813 thumb Anatomy 0.000 description 4
- 230000000295 complement effect Effects 0.000 description 2
- 210000005069 ears Anatomy 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 230000003100 immobilizing effect Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
- B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
- B66C1/22—Rigid members, e.g. L-shaped members, with parts engaging the under surface of the loads; Crane hooks
- B66C1/34—Crane hooks
- B66C1/36—Crane hooks with means, e.g. spring-biased detents, for preventing inadvertent disengagement of loads
Definitions
- the present invention relates to hooks comprising a safety latch which is pivotally mounted on the body of the hook so as to be able to be applied to the spout of this hook and to close the opening thereof, and the end portion of which opposite the spout possibly has a connecting element, for example an eye.
- the latch thus automatically comes into the safety position when the hook is subjected to a load.
- hooks of this kind comprising a latch which is disposed at the rear of the hook and of which a spout can engage in an opening provided in the central part of the latch, when the latter is in the safety position.
- the latch cannot thus inadvertently release the opening of the hook. But experience shows that it can happen that the latch, by pivoting from its safety position, comes to jam the thumb placed on the lock.
- the present invention relates to an improvement made to these hooks in order to avoid this drawback.
- the hook according to the invention is characterized in that the latch comprises, at its rear part, a boss capable of coming into abutment against a substantially tangent face of the lock, which limits the pivoting of the latch, and in that the hook body is shaped so as to allow the latch to pivot by a sufficient angle so that its beak emerges from the opening of the latch in the safety position, but insufficient for it come outside the path of the boss of this latch.
- the central part of the pawl has a second opening in which the spout of the latch can engage when the boss of the pawl bears against this latch.
- the safety latch 4 is pivotally mounted around an axis 5 between two ears the provided at the upper part of the body 1.
- the upper end of this latch is provided with an eye 6 and its lower end can be applied to the spout 3 by closing the opening 2 and thus preventing the release of the sling or the ring in which the spout 3 has been engaged.
- the lock 7 is pivotally mounted at 8 at the rear of the body 3, between the two ears la.
- the bolt or beak 9 of this lock can engage in an opening 10 of complementary shape provided at the periphery of the central part 4a, forming a hub, of the latch 4 so immobilizing the latter in its safety position; a certain play is of course provided to allow the spout 9 of the lock to disengage from the opening 10.
- a machining 11 provided in the body 1 allows the lock 7 to pivot enough so that its beak 9 emerges from the opening 10.
- the hub 4a of the length 4 has a second opening 12 in which the spout 9 of the lock can engage when the latch is in the open position ( Figure 2).
- This opening also has a shape complementary to that of the spout 9, that is to say it has two faces 12a and 12b against which the faces 9a and 9b of this spout 9 come to bear.
- the latch has a boss 4b which comes to bear on the face 9c of the spout 9, opposite the face 9a thereof.
- This face 9c is substantially tangent, that is to say perpendicular to the radius of rotation of the latch 7, passing through the point of contact.
- the machining 11 has a depth allowing the latch 7 to pivot sufficiently so that the thumb 13 of the user operating the latch is not crushed by the latch coming in the open position. However, this depth is insufficient to allow the face 9c of the spout 9 to come out of the path of the boss 4b.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Hooks, Suction Cups, And Attachment By Adhesive Means (AREA)
Abstract
Description
La présente invention concerne les crochets comportant un linguet de sécurité qui est monté pivotant sur le corps du crochet de façon à pouvoir s'appliquer sur le bec de ce crochet et fermer l'ouverture de celui-ci, et dont la portion d'extrémité opposée au bec présente éventuellement un élément de raccordement, par exemple un oeil. Le linguet vient ainsi automatiquement en position de sécurité lorsque le crochet est soumis à une charge.The present invention relates to hooks comprising a safety latch which is pivotally mounted on the body of the hook so as to be able to be applied to the spout of this hook and to close the opening thereof, and the end portion of which opposite the spout possibly has a connecting element, for example an eye. The latch thus automatically comes into the safety position when the hook is subjected to a load.
Il existe des crochets de ce genre comportant un verrou qui est disposé à l'arrière du crochet et dont un bec peut s'engager dans une ouverture prévue dans la partie centrale du linguet, lorsque celui-ci est en position de sécurité. Le linguet ne peut ainsi libérer intempestivement l'ouverture du crochet. Mais l'expérience montre qu'il peut arriver que le linguet, en pivotant depuis sa position de sécurité, vienne coincer le pouce posé sur le verrou.There are hooks of this kind comprising a latch which is disposed at the rear of the hook and of which a spout can engage in an opening provided in the central part of the latch, when the latter is in the safety position. The latch cannot thus inadvertently release the opening of the hook. But experience shows that it can happen that the latch, by pivoting from its safety position, comes to jam the thumb placed on the lock.
La présente invention a pour objet un perfectionnement apporté à ces crochets dans le but d'éviter cet inconvénient.The present invention relates to an improvement made to these hooks in order to avoid this drawback.
Le crochet selon l'invention est caractérisé en ce que le linguet comporte, à sa partie arrière, un bossage propre à venir en butée contre une face sensiblement tangente du verrou, ce qui limite le pivotement du linguet, et en ce que le corps du crochet est conformé de manière à permettre au verrou de pivoter d'un angle suffisant pour que son bec se dégage de l'ouverture du linguet en position de sécurité, mais insuffisant pour qu'il vienne en dehors du trajet du bossage de ce linguet.The hook according to the invention is characterized in that the latch comprises, at its rear part, a boss capable of coming into abutment against a substantially tangent face of the lock, which limits the pivoting of the latch, and in that the hook body is shaped so as to allow the latch to pivot by a sufficient angle so that its beak emerges from the opening of the latch in the safety position, but insufficient for it come outside the path of the boss of this latch.
Dans ces conditions, lorsque le linguet pivote, sa course est limitée par la rencontre de son bossage avec le verrou, ce qui empêche le coincement du pouce de l'utilisateur.Under these conditions, when the latch swivels, its stroke is limited by the meeting of its boss with the latch, which prevents the thumb of the user from being trapped.
Dans un mode particulier de l'invention, la partie centrale du linguet comporte une deuxième ouverture dans laquelle peut s'engager le bec du verrou lorsque le bossage du linguet est en appui contre ce verrou.In a particular embodiment of the invention, the central part of the pawl has a second opening in which the spout of the latch can engage when the boss of the pawl bears against this latch.
On a décrit ci-après, à titre d'exemple non limitatif, un mode de réalisation d'un crochet de sécurité perfectionné selon la présente invention, avec référence au dessin annexé dans lequel :
- . La Figure 1 est une vue en élévation du crochet avec arrachement partiel, le linguet étant verrouillé en position de sécurité,
- . La Figure 2 montre une partie du crochet, le linguet étant en butée contre le verrou.
- . FIG. 1 is an elevation view of the hook with partial cutaway, the latch being locked in the safety position,
- . Figure 2 shows part of the hook, the latch abutting against the latch.
Au dessin, on voit en 1 le corps d'un crochet qui délimite l'ouverture 2 et est terminé par un bec 3.In the drawing, we see in 1 the body of a hook which delimits the
Le linguet de sécurité 4 est monté pivotant autour d'un axe 5 entre deux oreilles la prévue à la partie supérieure du corps 1. L'extrémité supérieure de ce linguet est munie d'un oeil 6 et son extrémité inférieure peut s'appliquer sur le bec 3 en fermant l'ouverture 2 et empêchant ainsi le dégagement de l'élingue ou de l'anneau dans lequel a été engagé le bec 3.The
Le verrou 7 est monté pivotant en 8 à l'arrière du corps 3, entre les deux oreilles la. Le pène ou bec 9 de ce verrou peut s'engager dans une ouverture 10 de forme complémentaire prévue à la périphérie de la partie centrale 4a, formant moyeu, du linguet 4 de façon à immobiliser ce dernier dans sa position de sécurité; un certain jeu est bien entendu prévu pour permettre au bec 9 du verrou de se dégager de l'ouverture 10.The
Un usinage 11 prévu dans le corps 1 permet au verrou 7 de pivoter suffisamment pour que son bec 9 se dégage de l'ouverture 10.A
Le moyeu 4a du longuet 4 présente une deuxième ouverture 12 dans laquelle le bec 9 du verrou peut s'engager lorsque le linguet est en position d'ouverture (Figure 2). Cette ouverture a également une forme complémentaire de celle du bec 9, c'est-à-dire qu'elle présente deux faces 12a et 12b contre lesquelles viennent en appui les faces 9a et 9b de ce bec 9.The
Au-delà de l'ouverture 12, le linguet présente un bossage 4b qui vient en appui sur la face 9c du bec 9, opposée à la face 9a de celui-ci. Cette face 9c est sensiblementtangente c'est-à-dire perpendiculaire au rayon de rotation du verrou 7, passant par le point de contact.Beyond the opening 12, the latch has a
L'usinage 11 présente une profondeur permettant au verrou 7 de pivoter suffisamment pour que le pouce 13 de l'utilisateur manoeuvrant le verrou ne soit pas écrasé par le linguet venant en position d'ouverture. Mais cette profondeur est insuffisante pour permettre à la face 9c du bec 9, de venir hors du trajet du bossage 4b.The
Dans ces conditions, lorsque le linguet 4 prend sa position d'ouverture, le bossage 4b rencontre de manière sûre la face 9c du bec 9; la course du linguet est ainsi limitée, ce qui évite le coincement du pouce. Comme la face 9c est sensiblement tangente l'effort exercé sur le verrou 7 est normal à la surface de contact et ne peut créer un moment qui aurait pour résultat de faire pivoter le verrou autour de son axe 8, dans un sens ou dans l'autre.Under these conditions, when the
Il suffit alors de faire pivoter le verrou 7 de façon à engager son bec dans l'ouverture 12, ce qui verrouille le linguet dans sa position d'ouverture.It then suffices to pivot the
Il va de soi que la présente invention ne doit pas être considérée comme limitée au mode de réalisation décrit et représenté, mais en couvre, au contraire, toutes les variantes.It goes without saying that the present invention should not be considered as limited to the embodiment described and shown, but on the contrary covers all variants thereof.
Claims (2)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8201943A FR2520711B1 (en) | 1982-02-02 | 1982-02-02 | IMPROVEMENTS ON LOCKING HOOKS |
| FR8201943 | 1982-02-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP0085631A1 true EP0085631A1 (en) | 1983-08-10 |
Family
ID=9270735
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP83400216A Withdrawn EP0085631A1 (en) | 1982-02-02 | 1983-02-01 | Safety hooks |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP0085631A1 (en) |
| FR (1) | FR2520711B1 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1992007199A1 (en) * | 1990-10-12 | 1992-04-30 | Gunnebo Lifting Ab | Safety lifting hook |
| GB2379478A (en) * | 2001-04-20 | 2003-03-12 | Steven Hong | Coupling self-locking hook |
| USRE47349E1 (en) * | 2008-01-24 | 2019-04-16 | Nautilus Rigging Llp | Hook |
| DE102019103517A1 (en) * | 2019-02-12 | 2020-08-13 | Pewag Austria Gmbh | Safety hook |
| CN115215202A (en) * | 2021-04-15 | 2022-10-21 | 广东博智林机器人有限公司 | Hooks and hoisting devices |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1915524A (en) * | 1931-04-29 | 1933-06-27 | Fraser Joseph | Cargo hook |
| FR1063684A (en) * | 1952-09-26 | 1954-05-05 | Carabiner applicable in particular to lifting devices | |
| US3722943A (en) * | 1971-05-12 | 1973-03-27 | J Kalua | Safety hook |
| AU437514B2 (en) * | 1968-07-15 | 1973-07-03 | Kannas Broks Aktiebolag | Safety hook |
| DE2425867A1 (en) * | 1973-06-01 | 1974-12-19 | Bulten Kanthal Ab | SAFETY HOOK |
| FR2327186A1 (en) * | 1974-01-18 | 1977-05-06 | Forges Du Creux Du Sable | Lifting hook locking device - has hook with yoke in which closing finger with lifting eye pivots |
| FR2425400A1 (en) * | 1978-05-09 | 1979-12-07 | Beon Roger Le | Safety catch for crane hook - has sprung pawl engaging notch in fork end to hold hook in closed or open position as required |
| FR2491901A3 (en) * | 1980-10-10 | 1982-04-16 | Charlet Sa | Safety lifting hook for use with block and tackle - has pivoted closing link pivoted to part of main hooking body to lock it shut |
-
1982
- 1982-02-02 FR FR8201943A patent/FR2520711B1/en not_active Expired
-
1983
- 1983-02-01 EP EP83400216A patent/EP0085631A1/en not_active Withdrawn
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1915524A (en) * | 1931-04-29 | 1933-06-27 | Fraser Joseph | Cargo hook |
| FR1063684A (en) * | 1952-09-26 | 1954-05-05 | Carabiner applicable in particular to lifting devices | |
| AU437514B2 (en) * | 1968-07-15 | 1973-07-03 | Kannas Broks Aktiebolag | Safety hook |
| US3722943A (en) * | 1971-05-12 | 1973-03-27 | J Kalua | Safety hook |
| DE2425867A1 (en) * | 1973-06-01 | 1974-12-19 | Bulten Kanthal Ab | SAFETY HOOK |
| FR2327186A1 (en) * | 1974-01-18 | 1977-05-06 | Forges Du Creux Du Sable | Lifting hook locking device - has hook with yoke in which closing finger with lifting eye pivots |
| FR2425400A1 (en) * | 1978-05-09 | 1979-12-07 | Beon Roger Le | Safety catch for crane hook - has sprung pawl engaging notch in fork end to hold hook in closed or open position as required |
| FR2491901A3 (en) * | 1980-10-10 | 1982-04-16 | Charlet Sa | Safety lifting hook for use with block and tackle - has pivoted closing link pivoted to part of main hooking body to lock it shut |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1992007199A1 (en) * | 1990-10-12 | 1992-04-30 | Gunnebo Lifting Ab | Safety lifting hook |
| GB2379478A (en) * | 2001-04-20 | 2003-03-12 | Steven Hong | Coupling self-locking hook |
| USRE47349E1 (en) * | 2008-01-24 | 2019-04-16 | Nautilus Rigging Llp | Hook |
| DE102019103517A1 (en) * | 2019-02-12 | 2020-08-13 | Pewag Austria Gmbh | Safety hook |
| DE102019103517B4 (en) * | 2019-02-12 | 2021-04-22 | Pewag Austria Gmbh | Safety hook |
| US11142432B2 (en) | 2019-02-12 | 2021-10-12 | Pewag Austria Gmbh | Safety load hook |
| CN115215202A (en) * | 2021-04-15 | 2022-10-21 | 广东博智林机器人有限公司 | Hooks and hoisting devices |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2520711A1 (en) | 1983-08-05 |
| FR2520711B1 (en) | 1986-07-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0581693B1 (en) | Snap hook with roller for automatic locking | |
| EP1465507B1 (en) | Buckle for self-locking and adjustment fixing of a belt | |
| FR2663549A1 (en) | SELF-LOCKING CARABINER. | |
| EP0024976B1 (en) | Device for adjusting the inclination between two members, more particularly the two members of a vehicle seat | |
| FR2836964A1 (en) | CARABINER EQUIPPED WITH A LOCKING RING WITH SEPARATION LEG | |
| EP1101959A1 (en) | Snap-hook device, particularly for mooring boats | |
| FR2705064A1 (en) | Coupling hook for the lower arms of a tractor three-point hitch. | |
| FR2479166A1 (en) | DEVICE FOR ATTACHING A PREFABRICATED CONCRETE PIECE TO A LIFTING MACHINE | |
| EP1498384A1 (en) | Snap hook with two opposite fingers | |
| FR2697207A1 (en) | Hitch hook for the lower arm of a tractor three-point hitch. | |
| CA2408897C (en) | Quick fastening safety device for fixing a tool to the end of a loader arm or the like | |
| EP0002396B1 (en) | Load engaging hook | |
| EP0039301B1 (en) | Securing means for closure device for manhole cover | |
| EP0420777B1 (en) | Manhole cover with locked hinge | |
| EP0115518B1 (en) | Improvements to safety hooks | |
| EP0085631A1 (en) | Safety hooks | |
| FR2485658A1 (en) | CARBINER WITH AUTOMATIC LOCKING | |
| EP1213038B1 (en) | Fire hose comprising a safety device to prevent it from moving under the action of water ensuring its feeding | |
| EP0058810A1 (en) | Openable pulley block | |
| FR2461146A1 (en) | D=shaped snap hook for climber - has self-locking recoil sprung pivot gate with recoil sprung rotating locking sleeve which latches when gate is open | |
| EP0081108B1 (en) | Device to remotely pass a band around a fastening support | |
| EP0014148B1 (en) | Safety hook | |
| EP0235475A1 (en) | Spring-driven gyroscope | |
| FR2491901A3 (en) | Safety lifting hook for use with block and tackle - has pivoted closing link pivoted to part of main hooking body to lock it shut | |
| FR2485123A1 (en) | Link-chain adjusting hook - has self-locking safety catch pivoting on split bushing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| AK | Designated contracting states |
Designated state(s): BE CH DE GB LI SE |
|
| 17P | Request for examination filed |
Effective date: 19830919 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
| 18D | Application deemed to be withdrawn |
Effective date: 19850514 |