FR2792022A1 - PARASOL AND ITS DEPLOYMENT AND REPLOYMENT ASSISTANCE DEVICE - Google Patents

Abstract

Parasol (1) of the type comprising a main mast (2) and a secondary radial arm movable in displacement relative to the main mast between an inactive folded position and an active deployed position (B), characterized in that it comprises a device for 'deployment and / or folding aid (DA) intended to exert a force so as to drive the secondary arm in movement towards its folded and / or deployed position (B).

Description

PARASOL AND ITS DEPLOYMENT ASSISTANCE DEVICE AND

REPLOYMENT

  The present invention relates to a parasol and more precisely its deployment and folding device. There are known in the prior art parasols of all types, and in particular so-called offset mast parasols such as that described in French patent application No. 82 01747. These parasols are in the form of a main mast on which is mounted a movable secondary arm which carries at its end the canvas of the parasol as well as the means for opening and closing said canvas. These parasols have the advantage of leaving free the entire surface on the ground located directly above the canvas; nevertheless they have certain drawbacks which

  still deter some potential users.

  Indeed, the deployment of the parasol and the folding of it is generally delicate and requires a relatively large effort on the part of the user. Some parasols include actuation means intended to increase the effort, while others can also be motorized. However, these systems are either excessively

  complex and expensive, or unsuitable for the use made.

  Thus, the invention aims to remedy the aforementioned drawbacks using simple and reliable means. It facilitates the handling of parasols of the offset mast type by limiting the effort to

provided by the user.

  According to its main characteristic, the parasol of the invention is of the type comprising a main pole and a secondary radial arm movable in displacement relative to the main pole between a folded inactive position and a deployed active position, and is characterized in that it includes a deployment and / or folding aid to exert a force so as to cause the displacement

  secondary arm towards its folded and / or deployed position.

  According to another characteristic of the parasol of the invention, the radial arm is slidably mounted in a clevis pivotally articulated at the end of the main mast and is actuated in displacement by the pivoting of an articulation and control arm articulated on the main mast at one of its ends and on the secondary arm at the other of

its ends.

  According to a complementary characteristic of the parasol of the invention, the deployment and / or folding aid device comprises complementary deployment means arranged between the main mast and the articulation and control arm intended to urge the arm in displacement control and secondary arm

towards their deployed position.

  According to another characteristic of the parasol, the additional deployment means consist of a jack articulated on the main mast at one of its ends and articulated on the arm of

  command at the other of its ends.

  According to one embodiment of the parasol of the invention, the jack is disposed between the main mast and the control arm, so as to be in the maximum compression position when the parasol is in

folded position.

  According to another embodiment of the parasol of the invention, the jack is disposed between the main mast and the control arm so that it is in the maximum compression position when the parasol is in an intermediate position located between the

  folded position and deployed position.

  According to a complementary characteristic of this other embodiment of the parasol, on one side of the intermediate position, the jack biases the control arm and the secondary arm towards their deployed position, while on the other side of the intermediate position, the jack

  requests the arms towards their folded position.

  According to another characteristic of this other embodiment of the parasol of the invention, its intermediate position is located at

  near its folded inactive position.

  According to a third embodiment of the parasol, on the main mast is slidably mounted a yoke carrying an articulated secondary radial arm while a control and connection arm is articulated between the top of the mast and the secondary arm to allow the secondary arm to move from a folded position to a deployed position. According to this embodiment, the deployment and / or folding aid device is disposed between the control arm and

  link (15) and the secondary arm (14).

  Other characteristics and advantages of the invention will emerge

  of the description which will follow with regard to the appended drawings which are not

  given only by way of nonlimiting examples.

  Figures 1 to 9c illustrate several embodiments of the

  parasol and its deployment and / or folding aid.

  Figure 1 illustrates in perspective a parasol with offset pole

folded position.

  Figure 2 shows, according to a vlue similar to Figure 1, the parasol

in the deployed position.

  Figures 3a to 3d illustrate in side view a first embodiment of the parasol respectively in the folded position in two passage positions and in the deployed position during its deployment. Figures 4a to 4d illustrate in side view a second embodiment of the parasol respectively in the folded position, in the position

  intermediate, in a passage position, then in the deployed position.

  Figure 5 illustrates in perspective the cylinder and its joints.

  FIGS. 6a, 6b and 6c respectively illustrate in side view a first position close to the intermediate position, the intermediate compression position of the jack, and a second neighboring position

  from the intermediate position on the other side.

  Figure 7 illustrates in side view a third mode of

  realization of the parasol of the invention in the folded position.

  Figure 8 illustrates in a view similar to Figure 7 the parasol

in the deployed position.

  Figures 9a to 9c illustrate in three successive positions an alternative embodiment of the third embodiment of the parasol According to the invention, the parasol, bearing the general reference (1), is of the offset pole type. It has a secondary radial arm (3) arranged movable in displacement relative to a main mast (2) between a folded inactive position (A) and a deployed active position (B). Note that this secondary arm could be mounted mobile, no longer on a main mast, but equivalently on a chassis

  any fixed in the ground or likely to be moved.

  According to the invention, the parasol (1) comprises a device for assisting the deployment and / or folding back (DA) of the secondary arm (3). This device is intended to assist the displacement of the radial secondary arm (3)

  from its inactive position (A) to its active position (B) or vice versa.

  According to the illustrated embodiment of the parasol (1) of the invention, the deployment or folding aid device (DA) comprises complementary deployment means and / or complementary folding means, this or these means being susceptible to exert a force on the secondary radial arm (3) so as to drive it in displacement to bring it towards its deployed position (B)

  and / or towards its folded position (A).

  According to the first embodiment of the parasol (1) of the invention, it is in the form of a main pole (2) at the end of which is pivotally mounted a yoke (4) in which the secondary arm (3) can slide. The secondary radial arm carries at one of its ends all of the ribs (35) on which the fabric (5) is arranged as well as its opening and closing means (MOF) and is articulated at the other of its ends on a control articulation arm (6) pivotally mounted on the main mast (2) around a pivot axis (7). It can be noted, as shown in FIGS. 1 and 2, that in this embodiment the fabric (5) passes over the secondary arm (3). Thus, during its pivoting around its axis (7), the articulation arm and control (6) pushes the radial arm (3) to slide in the yoke (4) which pivots on the main mast (2). This sliding and pivoting which takes place at the level of the yoke (4) allows the secondary arm (3) to pass from its folded position (A) where it is vertical towards its active deployed position (B) where it is disposed. cantilevered on the main mast (2) to leave it entirely free

the space under the canvas (5).

  According to this first embodiment, the combined movement of the articulation and control arm (6) and the secondary radial arm (3) towards their deployed position (B) is obtained with the help of additional deployment means which allow the use of a force (F) intended to drive said arms (3, 6) in movement. The complementary deployment means are advantageously arranged between the main mast (2) and the control arm (6) so as to exert their force (F) on the articulation arm (6) to cause it to pivot at least for part of her

  displacement between its stowed position (A) and its deployed position (B).

  It goes without saying that these means could be arranged directly on the secondary radial arm without however leaving the protective field of

the invention.

  According to this first embodiment, the additional deployment means consist of a jack (8) such as, for example, a pneumatic, gas, hydraulic or other jack pivotally articulated on the main mast (2) at one from its ends (8a) and on the articulation and control arm (6) to the other of its

ends (8b).

  According to this first embodiment, the parasol only comprises complementary deployment means which urge the articulation arm from its folded position (A) towards its deployed position (B) by imparting a force (F) to it, and this, during its entire pivot. Note that the force (F) of the jack (8) imparted to the articulation arm (6) is a function of the position of the arm and decreases during the movement of the arms (3, 6) from their folded position to their deployed position. According to this embodiment, the jack (8) is arranged so as to be in the maximum compression position when the arms (3, 6) are

in the folded position (A).

  According to an alternative embodiment not shown, the parasol includes folding means which allow the articulation arm and the secondary arm to be urged from their deployed position to their folded position. These means can advantageously be constituted by elastic return devices which tend to return the articulation arm to its folded position. Note that for this embodiment, in the deployed position (B), the weight located on one side of the yoke (canvas, opening means and secondary arm) creates a torque which opposes the force of the means of folding back and that is greater than

  said restoring force to obtain a stable deployed position (B).

  According to a second embodiment, the parasol (1) comprises

  deployment assistance resources and deployment assistance resources.

  These means can advantageously be formed by the same member as, for example, a jack (8) capable of urging the pivoting of the articulated arm (6) towards one or the other of its extreme positions in

  function of the position in which the parasol (1) is located.

  According to this second embodiment, the parasol (1) is of the offset pole type and has a system of secondary radial arm (3) and control arm (6) similar to that described in the first embodiment. According to this second embodiment which constitutes the preferred embodiment of the device according to the invention, the jack (8) is arranged so that, during the movement of the secondary arm (3) and the control arm (6) , the distance (L) between the articulation axes (8a, 8b) arranged at its ends passes through a minimum (L1) corresponding to an intermediate position (C) where the jack (S) is in

maximum compression position.

  According to this embodiment, the intermediate position (C) of the arms (3, 6) and of the jack (8) is an unstable equilibrium position. Thus, when the system switches to one side of the intermediate position (C), the jack (8) constitutes a complementary deployment means by urging the arms (3, 6) towards their deployed position (A), while, from the other side of the intermediate position, the jack (8) biases the arms (3, 6) towards their folded position (B) and therefore constitutes a means

help with re-deployment.

  According to the preferred embodiment of the parasol (1) of the invention, the jack (8) and more precisely its articulations (8a, 8b) are positioned so that the intermediate position (C) of unstable equilibrium of the device is located in the vicinity of the folded inactive position. Thus, according to this embodiment, the pivot angle (c) not shown necessary for the articulation arm (6) to pass from its folded position (B) to its intermediate position (C) is

  between 0 and 30 and advantageously chosen substantially equal to 10.

  It goes without saying that the intermediate position (C) could be positioned differently from the deployed (A) and folded (B) positions and

  lie in a middle position between the two extreme positions.

  According to the preferred embodiment of the parasol and its deployment and / or folding aid (DA), the jack (S) is advantageously a jack of pneumatic type. However, the means of deployment or re-deployment could be obtained by

  equivalent bodies such as compression springs or the like.

  According to the first two embodiments described, the weight transfer which takes place during the sliding of the secondary arm (3) in the yoke (4) carried by the main mast makes it possible to create a torque around the pivot point of the yoke which also drives the articulated arms (3, 6) to their extreme positions. This weight transfer as well as the specific kinematics of the two arms (3, 6) require precise positioning of the jack (S) as well as a dimensioning of the latter in order to obtain the desired characteristics and in particular to relieve the torque created. by the weight so as to make the deployment and the folding back of the parasol easy to carry out by the user to avoid the latter of providing too great efforts when opening and closing the

Beach umbrella.

  According to a third embodiment of the parasol (1) of the invention, it is formed by a main mast (12) on which is slidably mounted a yoke (13) carrying a secondary radial arm (14) articulated. A control and connection arm (15) is articulated between the top of the mast (12) and the secondary arm (14) to allow the secondary arm to pass from a folded position (A) illustrated in FIG. 7 where it is located substantially vertical to a deployed position (B) illustrated in Figure 8 in which it is cantilevered at the end of the mast

main (12).

  According to this embodiment, the movement of the articulated arms (14, 15) is due to the displacement in translation of the yoke (13) which is obtained using a chain system (17) known per se, actuated for example by a handle (20). According to this variant, the parasol (1) comprises a jack (18) intended to exert a force (F) directly or indirectly on the chain (17) or on the fork (13) to make it slide from its low position (A) corresponding to the folded position of the

  parasol towards its high position (B) corresponding to the deployed position.

  The jack (18) can be mounted between a stop (19) located on the main mast (12) and the sliding handle (20) fixed to the chain so as to urge the yoke (13) from its low position (A) towards its high position (B) via the chain (17). This jack (18) therefore constitutes the complementary deployment means of the parasol (1). Note that according to this embodiment, the opening and closing of the whales (35) carrying the fabric (5) is obtained using a control cable (40) fixed to a traction point (45) located on the chain (17), said point undergoing a reverse movement from that of the sliding yoke (13) so as to cause the displacement of the nut (50) of the opening and closing means (MOF). It goes without saying that provision could be made in this embodiment for folding back or mixed means enabling folding or deployment without departing from the scope of protection of the invention. According to an alternative embodiment of this third embodiment illustrated in FIG. 9a to 9c, the jack (8) is arranged between the secondary arm (14) and the control and connection arm (15) to allow the secondary arm to be stressed. towards its deployed position. It is important to note that according to this alternative embodiment, the jack can be arranged so as to have a maximum compression position corresponding to an intermediate position of the parasol close to the folded-back position of the secondary arm as in the second embodiment of the parasol so as to obtain in particular a

stable folded position.

  Note also that in the third embodiment and in this variant, unlike the first embodiment described, the fabric (5) does not cover the secondary arm (14) but is held below said arm by a set whales

  (35) arranged under the secondary arm.

  It Of course, the invention is not limited to the embodiments described and shown by way of examples, but it comprises

  also all technical equivalents and their combinations.

Claims (10)

  1. Umbrella (1) of the type comprising a main mast (2, 12) and a secondary radial arm (3, 14) movable in displacement relative to the main mast between an inactive folded position (A) and an active deployed position (B ), characterized in that it comprises a deployment and / or folding-back aid device (DA) intended to exert a force so as to move the secondary arm (3, 14) towards its   folded (A) and / or extended (B) position.   2. Parasol (1) according to claim 1, characterized in that the radial arm (3) is slidably mounted in a yoke (4) pivotally articulated at the end of the main mast (2) and is actuated in displacement by the pivoting of an articulation and control arm (6) articulated on the main mast (2) at one of its ends and on the arm   secondary (3) at the other of its ends.   3. Parasol (1) according to claim 2, characterized in that the deployment and / or folding-in aid device (DA) comprises complementary deployment means arranged between the main mast (2) and the articulation arm and control (6) intended to urge the control arm (6) and the secondary arm to move (3) towards their deployed position.   4. Parasol (1) according to claim 3, characterized in that the additional deployment means consist of a jack (8) articulated on the main mast (2) at one of its ends (8a) and   articulated on the control arm (6) to the other of its extremities (8b).   5. Parasol (1) according to claim 4, characterized in that the jack (8) is disposed between the main mast (2) and the control arm (6), so as to be in the maximum compression position when the   parasol (1) is in the folded position (A).   6. Parasol (1) according to claim 4, characterized in that the jack (8) is disposed between the main mast (2) and the control arm (6) so that it is in the compression position maximum when the parasol (1) is in an intermediate position (C) located between   the folded position (A) and the deployed position (B).   7. Umbrella (1) according to claim 6, characterized in that on one side of the intermediate position (C), the jack (8) biases the control arm (6) and the secondary arm (3) towards their position deployed (B), while on the other side of the intermediate position (C), the jack (8)   biases the arms (3, 6) towards their folded position (A).   8. Parasol (1) according to claim 6 or 7, characterized in that its intermediate position (C) is located in the vicinity of its position inactive folded (A).   9. Umbrella (1) according to claim 1, characterized in that on the main mast (12) is slidably mounted a yoke (13) carrying a secondary radial arm (14) articulated while a control and connection arm ( 15) is articulated between the top of the mast (12) and the secondary arm (14) to allow the secondary arm to pass from a folded position   (A) to a deployed position (B).   10. Parasol (1) according to claim 9, characterized in that the deployment and / or folding-out assistance device is arranged between   the control and link arm (15) and the secondary arm (14).