FR3030003A1 - "MEANS OF SUSPENSION OF AN AGGREGATE HAVING A ROPE EQUIPPED WITH A JUNCTION MEMBER FIXED ON A DORMANT STRAND AND A ROCKET HAVING A CURRENT STRAND RECEIVED FLOWING IN THE JUNCTION BODY" - Google Patents

Abstract

The invention relates to suspension means for an apparatus (16) to a gantry (10), the suspension means comprising a rope (18) which comprises a lower end loop (22) for attachment to the apparatus. (16) formed by attaching a free end (24) of the rope (18) to an intermediate strand (26) of the rope; characterized in that they comprise a device (27) for fixing comprising: - a stop (32) stop which is fixed to one of said two free end (24) or intermediate (26); - a connecting member (34) which is fixed to the other of said two free end (24) or intermediate (26) ends, and which comprises an orifice (38) for the running passage of the current strand, the form of the orifice (38) being adapted to stop the stop (32) in order to block the sliding of the current strand.

Description

1 "Means for suspending an apparatus comprising a rope equipped with a connecting member fixed on a dormant strand and an abutment carried by a received running strand flowing in the joining member" TECHNICAL FIELD OF THE INVENTION The invention refers to means of suspension of an apparatus, including a swing, to a gantry. TECHNICAL BACKGROUND OF THE INVENTION The invention relates more particularly to suspension means of an apparatus, in particular a swing, to a gantry, the suspension means comprising: a rope which comprises an upper end strand intended to be attached to the gantry, and a bottom end buckle attachment to the tackle formed by attaching a free end of the rope to an intermediate strand of the rope; a device for fixing said free end strand on said intermediate strand. An apparatus, such as a swing, is generally suspended from a portico by two ropes. The lower end of each string is attached to an associated transverse end of the apparatus forming a loop. The free end of the rope is passed through two eyes of the tackle before being attached to an intermediate strand of the rope to form the loop in which the tackle is attached.

Several solutions are already known for attaching the free end of the rope to its intermediate strand. According to a first known solution, the free end strand is spliced onto the intermediate strand. This solution has the advantage of not requiring patches on the rope. Nevertheless, the splice is a complex operation that does not lend itself to mass production of suspended apparatus.

According to a second known solution, the free end strand is clamped parallel against the intermediate strand by means of a sleeve or a clamping flange. Nevertheless, this clamping operation is binding for the mass production of apparatus because it requires keeping the apparatus mounted on the rope while the sleeve is fixed around the two strands. BRIEF SUMMARY OF THE INVENTION The present invention proposes to simplify the process of assembling the apparatus inexpensively. For this purpose, the invention proposes suspension means of the type described above, characterized in that the fixing device comprises: - a stopper which is fixed to one of said two free or intermediate end strands of the rope, called "running strand"; a junction member which is fixed to the other of said two free or intermediate ends of the rope, called a "sleeping strand", and which comprises an orifice for the running passage of the current strand, the shape of the orifice being adapted to stop the abutment in order to block the sliding of the current strand relative to the sleeping strand against the weight of the apparatus. According to other characteristics of the invention: the connecting member comprises a passage sleeve which is traversed axially by the flowing passage opening of the cord, and it has a fixing ring on the dormant strand which extends from an outer face of the passage sleeve, the passage sleeve 3 and the fastening ring being made in one piece integrally made of plastic material; - The fixing ring is fixed to the rope overmoulding directly around the dormant strand; The passage sleeve has an axis which forms an angle of attachment with the axis of the fixing ring; said attachment angle is between 45 ° and 90 °; - The stop is formed by an annular stop which is fixed around the current strand; The abutment is made of a plastic material which is overmolded around the current strand; the inner face of the orifice of the passage sleeve and / or the outer face of the abutment has a frustoconical axial section so that the annular abutment is force-fitted in the orifice of the passage sleeve by the weight of the apparatus; the flowing strand is formed by the intermediate strand of the string, the strand being formed by the lower end strand of the string; The passage sleeve of the joining member has a closed annular cross-section so that the rope is radially trapped in the passage sleeve; - The passage sleeve of the connecting member has an axial slot which extends over its entire length, the width of the slot for the lateral insertion of the current strand in the passage sleeve. BRIEF DESCRIPTION OF THE FIGURES Other characteristics and advantages of the invention will appear on reading the detailed description which follows 3030003 4 for the understanding of which reference will be made to the appended drawings in which: FIG. assembly of a gantry equipped with various apparatus including a swing which is provided with suspension means made according to a first embodiment of the invention; - Figure 2 is a sectional view along the section plane 2-2 of Figure 1 which shows the suspension means of the swing; Figure 3 is an enlarged view of the rope of Figure 2; FIG. 4 is a view in radial section with respect to the axis "A" along the sectional plane 4-4 of FIG. 2, which represents the rope in the passage sleeve of the joining member 15 made according to FIG. first embodiment of the invention; - Figure 5 is a view similar to that of Figure 4 which shows the passage sleeve made according to a second embodiment of the invention.

DETAILED DESCRIPTION OF THE FIGURES In the rest of the description, elements having identical structure or similar functions will be designated by the same reference.

For the remainder of the description, the longitudinal, vertical and transverse orientations indicated by the "L, V, T" trihedron of the figures will be adopted without limitation. There is shown in Figure 1 a gantry 10 which has feet 12 which carry a cross 14 superior. Various apparatus 30 are suspended from the cross-member 14, in particular swings 15. Each swing 15 comprises a transverse seat 16 which is suspended from the cross-piece 14 by two ropes 18.

The two ropes 18 of a swing 15 have the same structure and arrangement. Only one of the two strings 18 will be described later, the description being applicable to the other strings.

The rope 18 is here made by braiding fibers. The fibers are for example made of a plastic material such as polypropylene. The rope 18 has an upper end strand 20 which is intended to be attached to the cross member 14 of the gantry 10. Thereafter, said upper end strand will be referred to as the "strand of suspension". The strand 20 suspension further comprises means for adjusting the suspension height of the seat 16 which will not be described in more detail. FIG. 2 shows the seat 16 attached to a lower end loop 22 of the rope 18. The buckle 22 is formed by the attachment of a free bottom end strand 24 of the rope 18, called subsequently strand 24 free, on an intermediate 26 of the rope 18. The attachment is performed by a fixing device 27 which will be described in more detail later.

The rope 18 is passed through two eyes 28 of the seat 16 which are both arranged at the same transverse end of the seat 16. Said eyes 28 are aligned longitudinally so that the loop 22 extends in a plane longitudinal vertical.

The loop 22 thus has a support strand 30 which is arranged under the seat 16 so as to support its weight. The support strand 30 is situated between: on the one hand, the free strand 24, which rises above the seat by the eye 28 arranged on the right in FIG. 2; 30 - and, secondly, the intermediate strand 26, which rises above the seat 16 by the eye 28 arranged on the left in FIG.

The strand 24 free and the intermediate strand 26 are thus stretched by the weight of the seat 16 between the seat 16 and the fixing device 27 so as to form an isosceles triangle whose base is formed by the seat 16 .

A first embodiment of the fixing device 27 is shown in FIGS. 2 to 4. The fastening device 27 comprises a stop 32 which is fastened to one of the two free or intermediate strands 24 of the rope 18. , called "running strand".

The fixing device 27 also comprises a connecting member 34 which is fixed to the other of said two free or intermediate strands 26 of the rope 18, referred to as the "sleeping strand". In this first embodiment, the current strand is formed by the intermediate strand 26. As a result, the current run will also be referenced 26 in the following description of this first embodiment. Therefore, the dormant strand is formed by the free strand 24. Therefore, the dormant strand will also bear the reference 24 in the following description of this first embodiment.

The connecting member 34 comprises a bushing 36 of axis passage "A". The sleeve 36 is traversed axially by an orifice 38 for flowing through the current strand 26 of the cord 18. The passage orifice 38 is delimited radially by an internal face. When the swing 15 is assembled, as shown in FIG. 2, the passage opening 38 opens upwards through an upper opening 39 and downwards through an opening 41 below. The connecting member 34 also comprises a ring 40 for fixing the strand 24 dormant. The fixing ring 40 extends in a vertical longitudinal plane from an outer cylindrical face of the sleeve 36. The fixing ring 40 has a passage of axis "B" which is delimited radially by an inner face. The axis "B" of the ring 303 is thus arranged in the same longitudinal vertical plane as the axis "A" of the sleeve 36 of passage. The sleeve 36 and the fixing ring 40 are made in one piece made of material made of a rigid plastic material. The connecting member 27 is made by molding. The fixing ring 40 is directly overmolded around the strand 24 dormant. This embodiment makes it possible to fix the fixing ring 40 to the strand 24, the inner face of the fixing ring 40 following the braiding of the fibers of the cord 18. It has also been found that the temperature at which the molten plastic material is injected into the mold used to weld the peripheral fibers of the rope 18 with the inner face of the ring 40 fixing. The overmoulding makes it possible to manufacture the joining member 34 and at the same time to fix the latter on the frame 24. The fixation thus made is strong enough to withstand very high traction. For example, for a rope 18 made of polypropylene and a fixing ring 40 having an internal face in contact with the rope 18 over a length of about 10 cm in the direction of its axis "B", it has been found that the fixation resists a tension of about 80 kg. The strand 24 being formed by the free end of the rope 18, the fixing ring 40 is here closed at its axial end of connection with the sleeve 36 passage. The fixing ring 40 thus forms a tip adapted to the free end of the rope 18, as shown in FIG. 3. The axis "A" of the sleeve 36 of passage forms an angle of attachment with the axis "B" of the fixing ring 40. Said angle "a" of attachment is between 45 ° and 90 °. This attachment angle "a" forms the vertex angle of the isosceles triangle formed between the sleeping strand 24, the running strand 26 and the support strand 30 when the swing 15 is assembled, as shown in FIG. 2.

In order to prevent the connecting member 34 from being damaged, it is preferable that the running strand 24 is arranged in the axis "A" of the sleeve 36 and that the strand 26 is arranged in the axis " B "of the fixing ring 40.

Said angle "a" of attachment thus makes it possible to define the optimum distance at which the function member 34 must be arranged above the seat 16. The length of rope 18 between the stop 16 and the member 34 junction is therefore defined accordingly. To reinforce the rigidity of the connecting member 34, a vertical longitudinal rib 42 extends between the outer face of the sleeve 36 and an outer face of the fixing ring 40. The abutment 32 is formed by an annular insert which is fixed around the running strand 26. The abutment 32 is delimited radially by an outer face 43, and it is delimited axially by a first axial end annular face 45 directed towards the free end 24 and by a second axial end opposite end face 47 directed towards the end. As shown in FIG. 3.

In the same way as the connecting member 34, the abutment 32 is made of a plastic material which is overmolded around the current strand 26. As previously explained for the connecting member 34, the embodiment by overmolding of the stop 32 makes it possible to guarantee its attachment to the rope 18. The stop 32 has an axial length which is substantially equal to the length of the fixing ring 40 . Thus, the contact surface between the abutment 32 and the rope 18 is sufficient to guarantee the strength of its attachment during the use of the swing 15. The shape of the orifice 38 of the passage sleeve 36 is adapted to stop the stop 32 to block the sliding 3030003 9 of the current strand 26 relative to the strand 24 against the weight of the apparatus 16. In the embodiment shown in Figure 2, the stop 32 has an outer face of frustoconical shape so that its first axial end face 45, which is directed towards the suspension strand, has an outer diameter greater than that of its second axial end face 47, which is directed towards the strand 24 free. The first axial end face 45 has an outer diameter greater than the smallest inner diameter of the orifice 38 of the passage sleeve 36. In this embodiment, the inner face of the orifice 38 of the passage sleeve 36 also has a frustoconical shape complementary to that of the abutment 32. Thus, the lower opening 41 has an inside diameter larger than the opening 39 superior. The inside diameter of the lower opening 41 is greater than the outside diameter of the first axial end face 45 of the abutment 32 to allow the insertion of the abutment 32 into the passage orifice 38.

This makes it possible to guarantee a jamming effect of the abutment 32 in the passage sleeve 36. To reinforce the wedging effect, the contact surface between the passage sleeve 36 and the stop 32 is maximized by providing a sleeve 36 of passage at least as long, axially, as the stop 32. To further improve the effect wedging, the outer face 43 of the stop 32 is advantageously provided with several stages of annular fins (not shown) flexible. These fins are deformed elastically during the insertion of the abutment 32 into the orifice 38 of the passage sleeve 36. When a force is applied to the stop 32 to remove it from the passage sleeve 36, the fins are arched against the inner face of the orifice 38 in order to oppose the removal of the stop 32.

In a variant not shown, the stop has a cylindrical outer face having an outer diameter greater than the largest inner diameter of the orifice of the passage sleeve. Thus, the stop is capable of being stopped by contact against the periphery of the orifice of the passage sleeve. The passage sleeve 34 of the connecting member 34 has a closed annular radial section as shown in FIG. 4. In other words, the internal face of the orifice 38 of the passage sleeve 36 has a section 10. closed circular transverse. Therefore, when the passage sleeve 36 is threaded on the rope 18, the rope 18 is radially trapped in the sleeve 36 passage. The manufacture of the swing 15 made according to this first embodiment will now be described.

The fixing device 27 is overmolded on the unrolled rope 18, as shown in FIG. 3. Only the strands 24, 26 of rope 18 concerned must be held in associated molds. The remainder of the rope 18 may be freely arranged depending on the equipment used for producing the fastening device 27. The abutment 32 and the connecting member 34 are overmolded directly on the rope 18 at their final location. The manufacture of the abutment 32 and that of the connecting member 34 can be performed simultaneously or successively starting with the abutment 32 or by the connecting member 34. As explained above, this overmolding operation makes it possible to fix on the rope 18 the abutment 32 and the connecting member 34. Then the rope 18 is mounted on the seat 16. The seat 16 30 has previously been manufactured independently of the fixing device 27. Since the connecting member 34 is too large to pass into the eyes 28 of the seat 16, the seat 3030003 11 16 is threaded by the upper end of the rope 18. In doing so, the stop 32 also passes 28. The orifice 38 of the passage sleeve 36 is then threaded onto the upper end of the rope 18. The rope 18 is then pulled through the eyes 28 and the sleeve 36 passes to the finish current strand 26. The abutment 32 is then inserted into the orifice 38 of the passage sleeve 36 until it is forcibly jammed in the passage sleeve 36.

The seat 16 is thus assembled with the rope 18 to form the swing 15. When using the swing 15, as illustrated in FIG. 2, the weight of the user sitting on the seat 16 acts as the rope 18 so as to further wedge the abutment 32 in the sleeve 38. This configuration of the first embodiment is particularly safe because the fact that the passage sleeve 36 is completely closed around the current strand 26 ensures that the The user will not be able to disassemble the seat 16 without previously unhooking the swing 15 of the frame 10. In addition, the fixing of the stop 32 by overmolding is sufficiently solid to support the weight of a user. But even if the abutment 32 slips relative to the current strand 26, the loop 22 would form, in this configuration, a flowing loop which would tighten around the seat 16 thus avoiding an accident. A second embodiment has been shown in FIG. 5. The only difference between this second embodiment and the first embodiment lies in the structure of the passage sleeve 36. Only the passage sleeve 36 thus modified will be described later. The sleeve 36 of passage of the connecting member 27 here has an axial slot 44 which extends over its entire length.

The slot 44 thus extends from the upper opening 39 of the passage sleeve 36 to its lower opening 41. The width of the slot 44 is defined so as to allow lateral insertion of the current strand 24 into the sleeve 36. Thus, when assembling the rope 18 with the seat 16, it is not necessary to threading the sleeve 36 through the suspension strand 20 of the rope 18. The sleeve 36 is directly fitted around the current strand 24. On the other hand, the width of the slot is insufficient to allow the lateral passage of the abutment 32 after it has jammed in the passage sleeve 36. The stop 32 must thus be inserted by its second end 47 into the lower opening 41 of the sleeve 36 of passage. The slot 44 is advantageously located in an area 15 in which the rope 18 is not in strong demand during the use of the swing 15. This variant does not guarantee the same safety of use as before, but it makes it easier to assemble the rope 18 with the seat 16.

According to a third non-illustrated embodiment of the invention, with reference to the second embodiment, the position on the chord of the abutment can be reversed with the position of the junction member. Thus, the current strand is formed by the lower end strand of the rope. Therefore, the dormant strand is formed by the intermediate strand. In this third embodiment, the connecting member is made as in the second embodiment, that is to say that the passage sleeve has a slot to allow the lateral insertion of the rope. Without this slot, it would not be possible to insert the current run into the passage sleeve because of the position of the connecting member between the two ends of the rope.

This third embodiment has the advantage of allowing the assembly of the seat on the rope while the rope is already suspended from the gantry. The suspension means made according to the teachings of the invention thus make it possible to manufacture the fastening device 27 independently of the seat 16. The assembly of the seat 16 with the rope 18 can thus be achieved without the presence of an overmolding installation. In addition, overmoulding the abutment 32 and the connecting member 34 directly on the rope 18 makes it possible simultaneously to manufacture these two elements and to fasten them to the rope 18.

Claims (11)

REVENDICATIONS1. Means for suspending an apparatus (16), in particular a swing, from a gantry (10), the suspension means comprising: - a rope (18) having an upper end strand (20) intended to be attached to the gantry (10), and a lower attachment fastener end loop (22) formed by attaching a free end (24) of the rope (18) to a strand ( 26) intermediate rope; - a device (27) for fixing said free end strand (24) on said intermediate strand (26); characterized in that the fixing device (27) comprises: - a stop (32) which is fixed to one of said two free end (24) or intermediate (26) end of the rope (18) , called "running strand"; - a connecting member (34) which is fixed to the other of said two free end (24) or intermediate (26) end of the rope (18), said "sleeping strand", and which comprises a hole (38); ) for the flow passage of the current strand, the shape of the orifice (38) being adapted to stop the stop (32) to block the sliding of the current strand relative to the sleeping strand against the weight of the apparatus (16). 2. Means of suspension according to the preceding claim, characterized in that the member (34) junction comprises a sleeve (36) passage which is traversed axially through the orifice (38) for the passage of the rope (18). , and it has a ring (40) for fixing on the fixed strand which extends from an external face of the sleeve (36) of passage, the sleeve (36) of passage and the ring (40) of fixing being made in a only piece of material made of plastic material. 3030003 15 3. Suspension means according to the preceding claim, characterized in that the fixing ring (40) is fixed to the rope (18) by overmolding directly around the dormant strand. 5 4. Means of suspension according to any one of claims 2 or 3, characterized in that the sleeve (36) has an axis (A) which forms an angle (a) of attachment with the axis (B) of the fixing ring (40). 5. Means of suspension according to claim 10, characterized in that said angle (a) of attachment is between 45 ° and 90 °. 6. Suspension means according to any one of the preceding claims, characterized in that the stop (32) is formed by an annular abutment which is fixed around the current strand. 7. Means of suspension according to the preceding claim, characterized in that the abutment (32) is made of a plastic material which is overmolded around the current strand. 8. Suspension means according to any one of claims 2 to 7, characterized in that the inner face of the orifice (38) of the passage sleeve and / or the outer face (45) of the stop (32). has a frustoconical axial section so that the annular stop (32) is forcibly wedged in the orifice (38) of the passage sleeve (36) by the weight of the device (16). 25 9. Means for suspension according to any one of the preceding claims, characterized in that the flowing strand is formed by the intermediate strand (26) of the rope (18), the strand being formed by the strand (24) of lower end of the rope (18). 30 10. Means of suspension according to the preceding claim, characterized in that the sleeve (36) for passage of the member (34) junction has a closed annular cross section 3030003 16 so that the rope is trapped radially in the sleeve ( 36). 11. Suspension means according to any one of claims 2 to 9, characterized in that the sleeve (36) of passage of the member (34) junction has an axial slot (44) which extends over any its length, the width of the slot allowing the lateral insertion of the current strand into the sleeve (36) of passage.