FR2854775A1 - Anti-slip tip for end of walking stick has inner fixed and outer pivoting metal components that imitate movements of human foot - Google Patents

Abstract

A tip consists of two components made from sheet metal: an inverted T-shaped component with its base (3) set in a slot and its shank (2) fitting inside the hollow end of the walking stick and having a hole (1) for a rivet, and an outer U-shaped component with vertical sides (4) having holes so it can pivot about the rivet, and a broad sole (9). The tip consists of two components made from sheet metal: an inverted T-shaped component with its base (3) set in a slot and its shank (2) fitting inside the hollow end of the walking stick and having a hole (1) for a rivet, and an outer U-shaped component with vertical sides (4) having holes so it can pivot about the rivet, and a broad sole (9). The sole has a non-slip under layer of rubber or cork, or can be fitted with a child's boot, laced up over it. During use the sole stays flat on the ground as the inner component pivots above it.

Description

The present invention relates to a device for optimizing contact

  with the ground of the canes used by the handicapped deprived of the support of a lower limbs, in this year 2003 which is dedicated to them.

  This device is attached to the lower end of any cylindri5 rod that is fitted with a rubber tip of conical shape.

  When the cane leaves the ground or resumes contact with it, it is most often inclined and its contact with the ground is reduced, making the stability of the support precarious, especially if the ground is wet, icy, snowy, muddy, grassy or sandy.

  In addition, an inclined floor or climbing stairs accentuate this instability. Inspired by the movements of the human ankle which conquered the whole planet or almost, capable of adapting to all soils, the device was designed as follows: It indeed has, according to a first characteristic, a rigid metal piece 1 mm thick, inverted T-shaped, asymmetrical which fits into the lumen of the cylindrical lower end of the rod, released from its rubber tip. A vertical incision 1 mm wide and 1.4 cm high is made in the wall of the metal tube in the sagittal plane, that of the step forward This piece, thus embedded, is held in the tube by a rivet which pierces it at 3 cm in height in its vertical part Its role is that of a stop.

  Its length is 6.5 cm in its horizontal part and it is rounded at both ends. Its vertical part rises 1.5 cm from the rear end 25 of the part over a height of 2.5 cm and its width is that of the internal diameter of the cylinder of the rod which is 1.4 cm.

  The second part of the device, metallic, is the same thickness and comprises: - A rectangular part resting on the ground, 6 cm long by 5 cm 30 wide - Two fins secured to the base, folded over it in the direction of the entire length and 1.5 cm in the width direction of each side, to then verticalize, parallel to the cylinder of the rod, on a height of 5 cm.

  In the sagittal plane, the two fins are profiled in their verticality, taking the shape of a rising shoe, narrowing asymmetrically after 1cm in height: - 1 cm for the posterior drawing - 2.5 cm for the previous drawing.

  They then climb on the last two centimeters, keeping a width of 2 cm to finish the piece in rounding.

  Thus, the metal part, the center of gravity of which is shifted backwards, swings forward as soon as it leaves the ground. Attached to the assembly which precedes by the same rivet which pierces it at 3.5 cm in height, it rocks respectively. about 20 forward and 15 backward, flip-flops limited by the abutment.

  A lateral tilting occurs if one pierces the two fins of an elongated hole in its vertical part of twice the horizontal diameter, tilting which is of the order of 5. The moving part can be lightened by drilling several holes in particular at the base. According to a variant of this device, a third rectangular metal part can be fixed by a central rivet or a ball bearing 15 under the horizontal part of the previous piece.

  Its dimensions are the same 5 x 6 cm or more if necessary, depending on the terrain, and there are cut two strips 0.5 cm wide, the bases of which are symmetrically 2.5 cm from the center of the room and whose points are located 1.3 cm from the same center.

  The two tabs are verticalized and slide in two grooves cut in the overlying part delimited by a layout of two arcs of concentric circles of 2.5 and 2 cm, on a width of 2 cm, allowing to limit the rotation to 15 of each side . The contact with the floor of the device, depending on whether one chooses the first proposition or the variant, is protected either - By a rubberized coating, - By a cork coating bonded to neoprene, - By a child's shoe, which has the advantage of accepting other parts on difficult grounds, such as crampons, snowshoes ...

  This widens the contact surface, protects the metal device from corrosion and brings a note of humor The figures which illustrate the device are at real scale - Figure 1 represents the butted part with its orifice (1) its part vertical (2) and its horizontal support (3) - Figure 2 shows the movable part of the profile, the vertical fin (4), its rear design (5) and its front design (6), as well as its base (9 ).

  Xv r 2854775 -Figure 3 represents in section, the preceding moving part, in the frontal plane, this section passing through the orifice (1), the base in its width (10) and the folds (7) and (8) horizontal fins.

  -Figure 4 represents the base of the rectangular piece, 5 cm wide (10) and 6 cm long (9).

  FIG. 5 represents a front section of the end of the paired rod passing through the center of the orifice (1) and of the abutment (2) inserted in the lumen of the cylinder.

  FIG. 6 represents the sagittal section passing through the orifice (1) of the as10 semblage of the cylindrical lower part of the rod (12) fitted with the abutment (2).

  FIG. 7 represents an external sagittal view of the assembly of the three parts named above.

  FIG. 8 illustrates, under the same conditions, the maximum anterior rocker 15.

  -Figure 9 illustrates the maximum posterior tilt.

  FIG. 10 represents a front section of the assembly of the three parts: the cylinder (12), the abutment (2) and the movable part in the form of a shoe (4).

  The dimensions of the device are presented by way of nonlimiting example. The device according to the invention is particularly intended to optimize the contact with the ground of the lower end of a cane used by the disabled, inspired by the mobility of the human ankle.

  FIG. 11 represents a variant of the base (9) and carries two arcuate orifices (13), arranged symmetrically with respect to the orifice (15) of the base.

  FIG. 12 represents a rectangular metal part (11) of the same dimensions as the base and in which two tongues (14) have been cut which are verticalized on their base to be inserted in the orifices (13) of the part above- adjacent, thus limiting the rotation of the assembly.

  FIG. 13 represents in section, the assembly of the two parts of the variant, in the frontal plane.

  FIG. 14 represents this same assembly in the sagittal plane.

  FIG. 15 represents the maximum rotation of 15 possible between the two parts.

  FIG. 16 represents this same rotation when the two parts are articulated by means of a ball bearing (16), a variant of the device.

rS '2854775

Claims (3)

  1) Device for optimizing the contact with the ground of the cylindrical lower end of a cane used for the movement of any disabled person deprived of the support of one of the lower limbs characterized in that it comprises: metal (2) introduced into the lumen of the cylinder of the rod and secured to this rod by a rivet (1). This piece fixed at 3.5 cm from the ground in the form of an asymmetrical inverted T, is a stop.   -A second mobile metal part, the same thickness as the previous one has a rectangular base (9), on the ground of 6 x 5 cm and 10 two fins attached to the base (4), verticalized on a height of 5 cm conforming to the shape of a rising shoe in the sagittal plane. Fixed to the previous assembly by the same rivet (1) this piece rocks, limited in front and back by the stop (2).   2) Device according to claim 1 characterized in that the movable part (9) rests on another rectangular part (11) of the same dimensions or larger. The two parts accepting an angle of rotation of 5 each side secured by a horizontal ball bearing (16) or a rivet.   This rotation is limited by two metal tabs (14) cut in the lower part Verticalized they abut on the ends of two grooves (13) hollowed out in the overlying part (9).   3) Device according to claim 1 or claim 2, characterized in that the surface in contact with the ground is protected -Either by a rubberized coating of the base of the moving part -Either by a cork coating bonded to neoprene -Either by a child's shoe slipped on the device and laced, this shoe can be provided with accessories chosen according to the terrain on which it progresses;