• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Step (1) comprising: - a front plane (2) comprising a pair of uprights (3) before and at least one step (4) connecting the uprights (3) before, - a plane (9) rear hinged on the plane (2) before, - a floor (16) extending astride between the front plane (2) and the rear plane (9) in unfolded configuration of the step (1), - a shelf (21) which extends transversely between the uprights (3) before, at an upper end thereof, by means of two brackets (22), the uprights (3) being provided, at the top end, with a first lower axis and a second upper axis, the first axis passing through a first lumen of a fitting (22), the second axis passing through a second slot of the fitting (22), the first lumen and the second slot ensuring the guiding movement of the tablet (21) between an extreme high position and an extreme low position.
    公开号:FR3036423A1
    申请号:FR1554519
    申请日:2015-05-20
    公开日:2016-11-25
    发明作者:Olivier Morel；Jean-Paul Benard
    申请人:CDH Group SAS；
    IPC主号:
    专利说明:

    [0001] The invention relates to footboards, in particular of the individual rolling platform (PIR) type as defined by the French standards NF P 93-352, NF P 93-353 and the platforms secure EMER (Radiation Equipment) as defined by the French standard FD E 85-301. [0002] A step comprises, conventionally, a front plane having two front uprights and at least one step connecting the front uprights, and a rear plane having two rear uprights and at least one bar connecting the rear uprights, hingedly mounted relative to the plane. before. The footboards of the PIR type further include a floor mounted between the front plane and the rear plane to allow an operator to work at height without fatigue, his two feet resting flat on the floor, and wheels facilitating the movement of the footboard . [0003] The steps of this type are folding, the rear plane hinging on the front plane to allow easy storage and relatively compact footboard. It is not planned to bend the step to simply move it on site between two neighboring work positions. Such handling would be too tiring and tedious. This is why the step is equipped with wheels. More specifically, on a large number of models, the rear plane is provided with wheels fixed to the rear uprights, and which, when the step is unfolded and rests on the ground in the normal working position, are raised above the ground. When the user wishes to move the step, he grasps it by the front upright, tilts it back until the wheels touch the ground, allowing it to be maneuvered and rolled. Traditionally, the steps are provided with a shelf, about 1 m from the floor, to meet the security requirements, the tablet serving as a guardrail. This arrangement has disadvantages. The height of the floor is generally 50 cm from the ground, the tablet is too high for the ergonomics of the workstation, 3036423 2 the operator to load packages on the shelf of the step from the ground to a height 1.50 m. The invention aims to provide a step with improved ergonomics, and significantly reduce the risk of 5 TMS (Musculoskeletal Disorders). For these purposes, it is proposed, in the first place, a step comprising: - a front plane comprising a pair of front uprights and at least one step connecting the front uprights, 10 - a rear plane mounted articulated on the front plane and comprising a pair of rear uprights and at least one bar connecting the rear uprights, the rear uprights terminating at ends which, with ends of the front uprights, define a landing plane for the step in an unfolded position thereof. ci, where the rear plane forms an angle with the front plane, - a floor which straddles between the front plane and the rear plane in unfolded configuration of the step, - a shelf which extends transversely between the uprights 20 before , at an upper end thereof, by means of two fittings, the front uprights being provided, in the upper extreme part, of a first lower axis and a second upper axis, the first r axis traversing a first light of a fitting, the second axis 25 passing through a second slot of the fitting, the first slot and the second slot providing guidance for moving the table between an extreme high position and an extreme low position. The step according to various embodiments, the following characteristics, if any combined: - the first light and the second light define in the fitting, two passages closed contour. By this arrangement, the tablet can not accidentally detach from the step, and the guidance of its movement can be ensured over its entire travel path; The first lumen is oblong and extends in a first direction, the second lumen comprising a first, upper, and a second extreme end section, substantially aligned and parallel to the first direction; - In the extreme high position of the tablet, the second axis bears against the contour of the second end section, the first axis being at a distance from the lower end of the first light. By this arrangement, a weight applied to the tablet prohibits its return to the low position; - The fitting comprises a flat plate in which are formed the lights and an upper fold of support and attachment 10 a tray. This flat plate is for example made of molded polymer material, or of stamped metal material; the two axes carried by each amount of the front plane comprise a shoulder ring; The two lights have a substantially constant width; - The two lights have substantially the same width, the two axes being advantageously of the same structure; the second light comprises a first section, substantially parallel to the first guide light; a second section, at an angle to the first section, and approaching the first guide lumen; a third section, substantially parallel to the first guide light; a fourth section, substantially perpendicular to the third section; a fifth section, substantially parallel to the first guiding light and forming a support abutment for the second axis, upper, in extreme high position of the tablet. Other objects and advantages of the invention will become apparent in the light of the description of an embodiment, given hereinafter with reference to the accompanying drawings, in which: FIG. 1 is a perspective view showing a step; - Figure 2 is a perspective view of a mounting bracket of a footboard; FIG. 3 is a detailed view of the guide pins placed at the upper end of the uprights of a front step plane; FIG. 4 is a perspective view of the upper part of a step provided with a shelf, in the extreme low position; - Figure 5 is a view similar to Figure 4, the tablet being in the extreme high position. In Figure 1 is shown a step 1 to allow work at height. In the example illustrated, the step 1 is of the individual rolling platform type. The step 1 comprises a front plane 2 having a pair of uprights 3 before and at least one step 4 transversely connecting the uprights 3 before. In the example shown, the step 1 comprises a single step 4. Alternatively, a different number of steps could be provided. The amounts 3 are in this case formed of metal profiles (for example aluminum or aluminum alloy), in particular rectangular section. At lower ends, the uprights 3 are provided with non-slip pads 6. As illustrated in Figure 1, the step 4 is formed of a folded cut sheet. The step 4 has a nose 7 of step formed by a fold which extends projecting from the front plane 2, extended downwards by a lower flange 8 by which the step 4 is fixed on the uprights 3, in particular by riveting. The step 1 further comprises a rear plane 9, hinged on the front plane 2, and having a pair of rear uprights 10 and at least one bar 11 connecting the uprights 10 back. In the illustrated example, the rear uprights 10 are, like the front pillars 3, formed of metal sections (for example made of aluminum or of aluminum alloy), in particular of rectangular section. At lower ends 12, the rear uprights are provided with non-slip pads 6. When the step 1 is unfolded (configuration shown in Fig. 1), the rear plane 9 forms an angle with the front plane 2, and the lower ends 12 of the rear legs 10 form, with the lower ends 3 of the front legs 3, a laying plan for the step 1, corresponding to an ideally flat ground on which the step 1 would rest. [0017] In the example illustrated, the rear plane 9 comprises three bars 11. Depending on the height of the step 1, the number of bars 11 could be different (especially higher). Fixing 3036423 5 bars 11 to the uprights 10 is for example made by bouterollage. The rear plane 9 is hinged relative to the front plane 2 at the upper ends 13 of the uprights 10, 5 which are shorter than the amounts 3 before. The pivot axis of the rear plane is formed by screws 14 secured to fixed plates 15 (in this case by bolting) on external lateral faces of the uprights 3 before. The step 1 further comprises a floor 16 which extends astride between the front plane 2 and the rear plane 9 in unfolded configuration of the step 1. This floor 16 is hingedly mounted relative to the plane 2 before by means of a cylindrical lintel 17 fitted on a bar 18 connecting the uprights 3 before. The floor 16 is also hinged relative to the rear plane 9 15 through connecting rods 19, the floor 16 resting, in deployed configuration, on a bar 11 connecting the rear uprights 10. According to a preferred embodiment illustrated, the floor 16 may be provided with a skirting board 20 covering three sides of the floor 16, with the exception of a front edge to facilitate the access of the user to the floor 16 by plane 2 before. This baseboard 20 forms a stop for the feet of the user and thus prevents it from tripping, limiting the risk of falling. The step 1 is also equipped with a shelf 21 25 tool holder (or package carrier), which extends transversely between the uprights 3 before, at an upper end thereof. In the illustrated embodiment, the shelf 21 is fixed to the front uprights 3 by means of hardware 22. The step 1 is also equipped with a railing 23, 30 mounted on the plane 2 before to the plumb of the floor 16 unfolded configuration of the step 1, and intended to retain the user in case of imbalance, so as to minimize the risk of falling. This railing 23 is foldable. It comprises a pair of side barriers, namely a left barrier and a right barrier, each mounted hinged to a front post between an extended position (illustrated in FIG. 1) in which each barrier 24, 25 s extends substantially perpendicularly to the front plane 2, and a folded position in which each barrier 24, 25 extends against the front plane 2. Each barrier 24, 25 has a U-shaped profile and is preferably formed of a folded metal tube (for example aluminum or aluminum alloy). Each barrier 24, 25 has an upper section or ramp 26, intended to extend at the height of the trunk of the user (between the belt and the bust), an intermediate section or main 27 current, vertical in the deployed position of the barrier 24, 25 and unfolded configuration of the step 1, and a lower section 28. Each barrier 24, 25 is hinged relative to the upright 3 before its ramp 26 and its lower section 28, both mounted on coaxial pivots 29 (formed for example by screws) secured to clevises 30 in which come accommodating, in the deployed position, the respective ends of the ramp 26 and the lower section 28, as illustrated in FIG. 1. [0026] Latches 31, for example in the form of angled wires pivotally mounted relative to each other. to the amounts 3 before, ensure the reversible maintenance of the barriers 24, 25 in the deployed position. The railing 23 further includes a movable gate 32 for retaining the unbalanced user toward the front of the step while delimiting the work area so that only one user can move with ease. on the floor 16. [0028] To allow the mobility of the step 1 in unfolded configuration when the user has descended, the step 1 is provided with retractable wheels. More specifically, the step 1 is equipped with a pair of rear wheels 33 and a pair of retractable front wheels 34 movably mounted between a retracted position in which they extend above the laying plane, and an extended position in which they extend at least partially below the laying plane. Each rear wheel 33 and each front wheel 34 is permanently biased towards its deployed position by a spring. The gate 32 comprises a high strap 35 and a strap 35 36 low. The high strap is attached to the barrier 24 at the junction between the current hand and the ramp 26, while the low strap 3036423 is attached to the barrier 24 at the junction between the current hand and the lower section. . According to one embodiment, each strap 35, 36 is formed by the combination of two straps connected to each other by a snap buckle system of male-female type, the strap 35 in connection with the barrier 25 being equipped with a half-male buckle, the strap 36 in connection with the same barrier being equipped with a half-loop female, which allows them to be engaged with each other during movement or folding of the step, this complementarity of 10 straps being taken up on the barrier 24. In a variant, not shown, each strap is linked at one end to the barrier 24 and at its other end, via a hook, for example metal, to the barrier 25. [0032] In the open position of the door 32, the user can freely access the floor 16, for example by using ordinary hands 27 during his climb. In the closed position of the gate 32, the straps 35, 36 thus extend transversely between the barriers 24, 25, themselves in the deployed position. The structure of the tablet 21 is shown in detail in FIGS. 2 to 5. [0034] The tablet 21 comprises a plate 40, of substantially rectangular shape with 41 beveled front edges. The plate 40 may be made of wood, of polymeric material, for example molded, or even of composite material or metal, for example light alloy. The upper surface 42 of the plate 40 may be flat, or include recesses forming a reservation, for example to house tools. The plate 40 is fixed to the uprights 3 of the front plane 2 by two fittings 22. The fittings may be made of metal material, of polymeric material, for example molded, or even of composite material. In the implementation shown, the two fittings 22 are in mirror symmetry with each other. As is more particularly apparent in FIG. 2, each fitting 22 comprises a flat plate-like main portion 43 and an upper fold 44, substantially perpendicular to the main portion 3036423. The plate 40 is fixed on the upper fold 44 of each fitting 22. Depending in particular on the materials used for the plate 40 and the fittings 22, this attachment can be provided by screwing, riveting, welding, gluing. In the embodiment shown, the upper fold 44 of each fitting 22 comprises two through holes 45 through which an assembly 46 is screwed. The flat plate 43 of each fitting 22 comprises a first guide slot 47 and a second slot 48 for guiding the movement of the fitting 22 about two axes 49, 50, between a top position of the shelf 21, shown in FIG. in FIG. 5, and a lower position of the shelf 21, represented in FIG. 4. The two axes 49, 50 carried by each upright 3 of the front plane 2 advantageously comprise a stepped ring, the friction between the axes 49, 50 and the fittings 22 allowing the user to place the tablet 21 in an intermediate position between the extreme high position of FIG. 4 and the extreme low position of FIG. 5. The high position is advantageously used to deposit on the tablet 21 bulky loads. The possibility of one or more intermediate positions allows a good ergonomics of the workstation, including a position less than 1.40 m from the ground to reduce hardship at work. The position of the two axes 49, 50 along the uprights 3 and the shape of the slots 47, 48 provide guidance of the fittings 22, throughout the kinematics and the maintenance in the chosen position. The two lumens 47, 48 are of constant width and substantially equal in the embodiment shown. The first guide light 47 is oblong and extends substantially vertically, when the shelf 21 is in the extreme high or low position. A first, lower axis 49 passes through this first guide slot 47. The second guide light 48 has a hook-shaped opening when viewed from the front. More precisely, the second guiding slot 48 forms, starting from the fold 44: a first section 51, substantially parallel to the first guiding light 47; A second section 52, forming an angle with the first section 51, and approaching the first guide light 47; a third section 53, substantially parallel to the first guide light 47; a fourth section 54, substantially perpendicular to the third section 53; a fifth section 55, substantially parallel to the first guiding slot 47 and acting as a support abutment for the second upper axis 50, in the extreme high position of the shelf 21. Starting from the extreme low position represented in FIG. 4, a manual action on the shelf 21 makes it possible to raise it to an intermediate position, the axes 49, 50 sliding in the slots 47, 48. [0046] In the extreme high position, represented in FIG. 5, the second axis 50 is supported in the fifth section 55 of the second lumen 48, the first axis 49 being at a distance from the lower end portion of the first lumen 47. Starting from the extreme high position shown in FIG. 5, an action on the tablet 21 causes the sliding of the first axis 49 towards the lower end portion of the first lumen 47, and the sliding of the second axis 50 into the fourth section 54 of the second lumen 48. The tablet 21 had to be manipulated to be lowered. The invention has many advantages. Each light 47, 48 being closed, the shelf 21 is guided at each moment and can not rock freely. The presence of a load on the shelf 21 has the effect of keeping the fitting 22 in its locking position, in extreme high position of the shelf 21, the system offers good security. It is possible to place the tablet 21 at different heights, depending on the desired use. The safety of the operator is maintained by the presence of a fixed railing system 60, independent of the mobility of the tablet. 35
    权利要求:
    Claims (9)
    [0001]
    REVENDICATIONS1. Step (1) comprising: a front plane (2) comprising a pair of uprights (3) before and at least one step (4) connecting the uprights (3) before, a rear plane (9) hinged on the plane (2) ) and comprising a pair of rear uprights (10) and at least one bar (11) connecting the rear uprights (10), the rear uprights (10) terminating at ends (12) which, with ends (5), front uprights (3) define an installation plane for the step (1) in an unfolded position thereof, wherein the rear plane (9) forms an angle with the front plane (2), a floor (16) which extends astride between the front plane (2) and the rear plane (9) in unfolded configuration of the step (1), a shelf (21) extending transversely between the uprights (3) at one end upper thereof, by means of two fittings (22), characterized in that the uprights (3) are provided, in the upper extreme part of a first a xe (49) lower and a second axis (50) upper, the first axis (49) passing through a first lumen (47) of a fitting (22), the second axis (50) passing through a second lumen (48) the fitting (22), the first lumen (47) and the second lumen (48) guiding the tablet (21) in displacement between an extreme high position and an extreme low position.
    [0002]
    2. Step according to claim 1, characterized in that the first lumen (47) and the second lumen (48) define, in the fitting (22), two passages with closed contour.
    [0003]
    Step according to claim 1 or 2, characterized in that the first lumen (47) is oblong and extends in a first direction, the second lumen (48) comprising a first upper end section (51) and a first second end section (55), lower, substantially aligned and parallel to the first direction. 3036423 11
    [0004]
    4. Step according to claim 3, characterized in that, in the extreme high position of the shelf (21), the second axis (50) bears against the contour of the second end section (55), the first axis (49). ) being at a distance from the lower end of the first light (47).
    [0005]
    5. Step according to any one of claims 1 to 4, characterized in that the fitting (22) comprises a flat plate (43) in which are formed the slots (47, 48) and an upper fold (44) d supporting and fixing a plate (40).
    [0006]
    6. Step according to any one of claims 1 to 5, characterized in that the two axes (49, 50) carried by each upright (3) of the front plane (2) comprise a shoulder ring 15
    [0007]
    7. Step according to any one of claims 1 to 6, characterized in that the two slots (47, 48) have a substantially constant width. 20
    [0008]
    8. Step according to claim 7, characterized in that the two slots (47, 48) have substantially the same width.
    [0009]
    9. Step according to any one of the preceding claims, characterized in that the second lumen (48) comprises: - a first section (51), substantially parallel to the first guide lumen (47); a second section (52) forming an angle with the first section (51) and approaching the first guide lumen (47); A third section (53) substantially parallel to the first guide lumen (47); a fourth section (54) substantially perpendicular to the third section (53); a fifth section (55), substantially parallel to the first guiding light (47) and forming a support abutment for the second axis (50), at the topmost position of the tablet (21).
    类似技术:
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    同族专利:
    公开号 | 公开日
    EP3095952A1|2016-11-23|
    EP3095952B1|2017-12-27|
    FR3036423B1|2017-05-26|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US656946A|1900-01-11|1900-08-28|Hubert A Banning|Step-ladder.|
    US4953661A|1989-10-17|1990-09-04|Hilton Allan R|Ladder attachment|
    US20080142301A1|2006-12-18|2008-06-19|Cosco Management, Inc.|Stepladder|
    EP2818625A1|2013-06-25|2014-12-31|CDH Group|Step with retractable wheels with control by railing|
    FR3111940A1|2020-06-29|2021-12-31|Cdh Group|GATE LEAF FOR WORK PLATFORM AT HEIGHT AND WORK PLATFORM INCLUDING SUCH A GATE LEAF|
    FR3112570A1|2020-07-15|2022-01-21|Cdh Group|DEVICE FOR WORKING AT HEIGHT WITH ARTICULATED GUARDRAIL AND AUTOMATIC GATE|
    FR3113695A1|2020-08-27|2022-03-04|Cdh Group|DEVICE FOR WORKING AT HEIGHT WITH ARTICULATED GUARDRAIL AND MEANS OF MAINTAINING IN FOLDED POSITION|
    法律状态:
    2016-05-03| PLFP| Fee payment|Year of fee payment: 2 |
    2016-11-25| PLSC| Search report ready|Effective date: 20161125 |
    2017-05-30| PLFP| Fee payment|Year of fee payment: 3 |
    2018-05-15| PLFP| Fee payment|Year of fee payment: 4 |
    2019-05-20| PLFP| Fee payment|Year of fee payment: 5 |
    2020-05-19| PLFP| Fee payment|Year of fee payment: 6 |
    2021-05-17| PLFP| Fee payment|Year of fee payment: 7 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1554519A|FR3036423B1|2015-05-20|2015-05-20|TABLET FOOTBOARD WITH ADJUSTABLE HEIGHT|FR1554519A| FR3036423B1|2015-05-20|2015-05-20|TABLET FOOTBOARD WITH ADJUSTABLE HEIGHT|
    EP16170081.0A| EP3095952B1|2015-05-20|2016-05-18|Step plate with height-adjustable step|
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