FR2519716A1 - Joint for fastening of ladder rung - has countersunk screw recessed to prevent accidental loosening - Google Patents
Joint for fastening of ladder rung - has countersunk screw recessed to prevent accidental loosening Download PDFInfo
- Publication number
- FR2519716A1 FR2519716A1 FR8200759A FR8200759A FR2519716A1 FR 2519716 A1 FR2519716 A1 FR 2519716A1 FR 8200759 A FR8200759 A FR 8200759A FR 8200759 A FR8200759 A FR 8200759A FR 2519716 A1 FR2519716 A1 FR 2519716A1
- Authority
- FR
- France
- Prior art keywords
- rung
- ring
- screw
- housing
- upright
- 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.)
- Pending
Links
- 230000008878 coupling Effects 0.000 abstract 1
- 238000010168 coupling process Methods 0.000 abstract 1
- 238000005859 coupling reaction Methods 0.000 abstract 1
- 238000005553 drilling Methods 0.000 description 3
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06C—LADDERS
- E06C7/00—Component parts, supporting parts, or accessories
- E06C7/08—Special construction of longitudinal members, or rungs or other treads
-
- 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
- F16B2/00—Friction-grip releasable fastenings
- F16B2/02—Clamps, i.e. with gripping action effected by positive means other than the inherent resistance to deformation of the material of the fastening
- F16B2/06—Clamps, i.e. with gripping action effected by positive means other than the inherent resistance to deformation of the material of the fastening external, i.e. with contracting action
- F16B2/065—Clamps, i.e. with gripping action effected by positive means other than the inherent resistance to deformation of the material of the fastening external, i.e. with contracting action using screw-thread elements
-
- 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
- F16B7/00—Connections of rods or tubes, e.g. of non-circular section, mutually, including resilient connections
- F16B7/04—Clamping or clipping connections
- F16B7/044—Clamping or clipping connections for rods or tubes being in angled relationship
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Ladders (AREA)
Abstract
Description
L'invention se rapporte à un dispositif d'assemblage angulaire de deux éléments dont l'un présente un logement recevant l'autre élément. The invention relates to a device for angular assembly of two elements, one of which has a housing receiving the other element.
Elie se rapporte également aux ensembles constitués d'éléments assemblés à l'aide d'au moins un tel dispositif et notamment aux ensembles équipant les aires de jeux d'extérieur tels des échelles. Elie also relates to assemblies made up of elements assembled using at least one such device and in particular to assemblies equipping outdoor play areas such as ladders.
On connalt déjà des échelles d'aires de jeux dont les montants, qui sont généralement en bois, recoivent des éche longs qui le plus souvent sont métalliques. We already know ladders of play areas whose uprights, which are generally made of wood, receive long shanks which most often are metallic.
Pour des raisons de sécurité qui sont évidentes, chaque extrémité d'échelon doit être associée au montant par un dispositif d'assemblage sûr et dont les moyens de manoeuvre sont noyés dans l'élément extérieur pour éviter tout desserage accidentel ou par des personnes non autorisées. For obvious safety reasons, each rung end must be associated with the upright by a secure assembly device, the operating means of which are embedded in the external element to avoid any accidental loosening or by unauthorized persons .
Si un boulon dont le corps est passé au travers des deux éléments et dont la tête et l'écrou sont noyés dans des lamages de l'élément extérieur parait être une solution simple au problème posé par le dispositif d'assemblage, il présente toutefois l'inconvénient d'affaiblir l'élément interne qu'il traverse et qui, à cet effet, doit être percé de part en part. If a bolt whose body has passed through the two elements and whose head and nut are embedded in counterbores of the external element seems to be a simple solution to the problem posed by the assembly device, it nevertheless presents the disadvantage of weakening the internal element which it crosses and which, for this purpose, must be drilled right through.
Ce perçage pose en outre des difficultés pour son positionnement compte tenu des larges tolérances de fabrication notamment des jeux à ossature en bois ce qui implique généralement que le perçage soit opéré au montage et exige donc d'amener, sur les lieux du montage, les moyens de ce perçage. This drilling also poses difficulties for its positioning given the wide manufacturing tolerances, in particular wooden frame games, which generally implies that the drilling is carried out during assembly and therefore requires bringing the means to the assembly site. of this piercing.
Un résultat que l'invention vise à obtenir est un dispositif d'assemblage sûr et dont les moyens de manoeuvre sont noyés dans l'élément externe. A result which the invention aims to obtain is a secure assembly device and the operating means of which are embedded in the external element.
Un autre résultat que l'invention vise à obtenir est un tel dispositif qui n'affaiblit pas l'élément interne et ne nécessite pas d'amener, sur les lieux de montage, des moyens de perçage. Another result which the invention aims to obtain is such a device which does not weaken the internal element and does not require bringing drilling means to the mounting locations.
A cet effet, elle a pour objet un dispositif d'assemblage du type précité, notamment caractérisé en ce que l'é- lément externe présente un perçage qui débouche à la fois dans le logement et à l'extérieur de l'élément externe et loge une bague laquelle présente une semelle d'appui sur la face interne du logement de manière qu'après engagement de l'élément interne, la dite bague soit rendue prisonnière du perçage. To this end, it relates to an assembly device of the aforementioned type, in particular characterized in that the external element has a bore which opens both into the housing and outside of the external element and houses a ring which has a bearing sole on the internal face of the housing so that after engagement of the internal element, said ring is made captive of the bore.
L'invention sera bien comprise à l'aide de la description ci-après faite, à titre d'exemple non limitatif, en regard du dessin ci-annexé, qui représente schématiquement
- figure l : le dispositif vu en coupe,
- figure 2 : une variante de réalisation de ce dis
positif.The invention will be better understood with the aid of the description given below, by way of nonlimiting example, with reference to the attached drawing, which schematically represents
- Figure l: the device seen in section,
- Figure 2: an alternative embodiment of this dis
positive.
En se reportant au dessin, on voit que l'ensemble comprend au moins un élément externe l, tel un montant et au moins un élément interne 2, tel un échelon. Referring to the drawing, it can be seen that the assembly includes at least one external element l, such as an upright and at least one internal element 2, such as a rung.
Le montant l qui présente un logement 3 recevant avec un jeu important, l'échelon 2, présente par ailleurs un perçage 4 débouchant à la fois dans le logement 3 et à l'extérieur du montant l. The upright l which has a housing 3 receiving with significant play, the step 2, also has a bore 4 opening both into the housing 3 and outside the upright l.
Dans le perçage 4 est logée une bague 5 qui, à la manière d'un écrou est filetée et qui présente une semelle 6 d'appui sur la face interne du logement 3. In the bore 4 is housed a ring 5 which, like a nut is threaded and which has a sole 6 of support on the internal face of the housing 3.
Après engagement de l'échelon, l'écrou 5 est donc rendu prisonnier du perçagè. After engagement of the rung, the nut 5 is therefore made prisoner of the borehole.
Dans la bague 5 est engagée une vis 7, et ce, dans un sens tel que la tête de manoeuvre 8 demeure accessible à un outil de serrage tel un tourne-vis ou une clé, depuis l'extérieur du montant. In the ring 5 is engaged a screw 7, and this, in a direction such that the operating head 8 remains accessible to a tightening tool such as a screwdriver or a wrench, from the outside of the upright.
Par le vissage, l'extrémité de la tige 9 de la vis 7 prend appui sur l'échelon 2 et assure son blocage énergique. By screwing, the end of the rod 9 of the screw 7 is supported on the rung 2 and ensures its energetic blocking.
La longueur de la tige 7 de même que les hauteurs de l'écrou 5 et de la tête 8 sont déterminées de manière telle qu'au moins après serrage, la tête 8 soit complétement noyée dans le perçage afin que soit interdit tout dessérage accidentel ou par une personne non munie de l'outil précité. The length of the rod 7 as well as the heights of the nut 5 and of the head 8 are determined so that at least after tightening, the head 8 is completely embedded in the bore so that any accidental loosening is prohibited or by a person not equipped with the above-mentioned tool.
Dans une variante de réalisation, l'échelon 2a, qui est tubulaire, présente au moins à l'une de ses extrémités une découpe en "U" 10 ouverte à cette extrémité de l'échelon et de largeur suffisante pour recevoir avec jeu la tige 9a de la vis 7a dont l'extrémité s'engage à son tour dans un écrou il logé dans l'échelon. In an alternative embodiment, the rung 2a, which is tubular, has at least at one of its ends a "U" cutout 10 open at this end of the rung and of sufficient width to receive with clearance the rod 9a of the screw 7a, the end of which engages in turn in a nut housed in the rung.
De préférence, cet écrou il porte une semelle 12 d'appui sur la face interne du tube 2a
Dans cette variante de réalisation, la bague 5a prisonnière du perçage 4 peut, au lieu d'être filetée, être alésée de manière à recevoir avec jeu la tige 9a de la vis 7a
L'avantage de ce mode d'assemblage est d'assurer positivement l'immobilisation en rotation de l'échelon dans son logement. Preferably, this nut carries a support plate 12 on the internal face of the tube 2a
In this alternative embodiment, the ring 5a trapped in the bore 4 can, instead of being threaded, be bored so as to receive with play the rod 9a of the screw 7a
The advantage of this method of assembly is to positively secure the rotation of the rung in its housing.
Claims (6)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8200759A FR2519716A1 (en) | 1982-01-08 | 1982-01-08 | Joint for fastening of ladder rung - has countersunk screw recessed to prevent accidental loosening |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8200759A FR2519716A1 (en) | 1982-01-08 | 1982-01-08 | Joint for fastening of ladder rung - has countersunk screw recessed to prevent accidental loosening |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2519716A1 true FR2519716A1 (en) | 1983-07-18 |
Family
ID=9270109
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR8200759A Pending FR2519716A1 (en) | 1982-01-08 | 1982-01-08 | Joint for fastening of ladder rung - has countersunk screw recessed to prevent accidental loosening |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2519716A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0239781A1 (en) * | 1986-03-05 | 1987-10-07 | Achille Castiglioni | A coupling for connecting intersecting rod-shaped bodies together |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB191121606A (en) * | 1911-09-30 | 1912-09-26 | Carl August Teske | Improvements in Joints for Tubular Structures. |
US1380468A (en) * | 1918-11-29 | 1921-06-07 | Herbert H Drew | Coupling |
FR1272587A (en) * | 1960-08-13 | 1961-09-29 | Device for assembling tubes, particularly applicable to removable legs of metal furniture | |
CH555984A (en) * | 1972-02-23 | 1974-11-15 | Hasena Ag | SCREW CONNECTION. |
-
1982
- 1982-01-08 FR FR8200759A patent/FR2519716A1/en active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB191121606A (en) * | 1911-09-30 | 1912-09-26 | Carl August Teske | Improvements in Joints for Tubular Structures. |
US1380468A (en) * | 1918-11-29 | 1921-06-07 | Herbert H Drew | Coupling |
FR1272587A (en) * | 1960-08-13 | 1961-09-29 | Device for assembling tubes, particularly applicable to removable legs of metal furniture | |
CH555984A (en) * | 1972-02-23 | 1974-11-15 | Hasena Ag | SCREW CONNECTION. |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0239781A1 (en) * | 1986-03-05 | 1987-10-07 | Achille Castiglioni | A coupling for connecting intersecting rod-shaped bodies together |
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