FR2482863A1 - APPARATUS FOR RECLAIMING THE WINDING OF AN INDIVIDUAL BELT OF SAFETY, BY SPRING, IN NON-USE IN A MOTOR VEHICLE - Google Patents

Abstract

SPIRAL SPIRAL 40 RECALLING BAND 2 WINDING UP ON EXTERNAL DRUM 4 IS PRELIMINATED BY ROTATION OF SHAFT 30, THEN INSERTION OF PINS SOLIDARIZING BOX 20 BEFORE RELEASING IT ON SHAFT 10 OF THE DRUM.

Description

The present invention relates to a winding return device

  of the belt of a seat belt in

  a motor vehicle, after a deployment of use.

  The apparatus according to the invention comprises a spring device having a housing, a winding axis in this housing, and a spiral spring, the ends of which are respectively connected

  liming and the axis, together with the means of

  from the shaft to the housing after winding the spring, in order to

  maintain this one in previous winding.

  The objects and advantages of the invention will be better

  understood using the following description of preferred examples

  embodiment, and the accompanying drawings, in which: - Figure 1 is an axial section of an apparatus according to the invention, which is associated with a return device of the winding tape; - Figure 2 is a cross section along the line 2-2 of Figure 1; FIG. 3 is an exploded perspective view showing the parts of the apparatus according to the invention; - Figure 4 is a section similar to Figure 1 of a variant of the apparatus; - Figure 5 is a section similar to Figure 2, along the line 5-5 of Figure 4; and FIG. 6 is a view similar to FIG.

the apparatus of Figures 4 and 5.

  The apparatus according to the invention of FIGS. 1, 2 and 3 is associated with a seat belt band 2, wound on a

  drum 4 with end flanges 6, only one of which is shown.

  This winding device of the strip is mounted to rotate on one or more trays 8 which form part of the main frame of the apparatus. A shaft 10 is axially connected to this device and passes through the plate 8, its outer end surface having a blade

diametric 12.

  The apparatus equipped according to the invention comprises a housing formed by a lid 20 in the form of a cup or bucket and a plate 22 which closes it and which is associated with the fixed plate 8 by

  all suitable elements, such as screws 24. An axis 30 is

  it is trussed to the box and rotates in a central opening 31 of

  plate 22 relative to the fixed casing 20. A surface 32 of

  mity of the axis, in contact with the winding device, comprises a slot recess 34 which receives the blade 12 projecting from the shaft 10 integral with the drum 4 tape. A spiral spring 40 is wound on the axis 30 inside the casing, its ends being linked

  respectively to this axis and to the peripheral wall of the cover 20.

  It is essential, in the use of the apparatus of the invention, to maintain the return spring 40 in winding, so that it is tight on the axis 30 when the barnde is

  deployed, thus being in a recall condition of the released band.

  It is therefore necessary to tighten the spring prior to mounting the device, means according to the invention maintaining it in this state. These means comprise holes 50, 52 parallel to the axis 30 and which open on its end surface 54, which

  is in contact with the cover 20, and which are thus opposed to the arrangement

  winding device, which can be aligned with corresponding holes

  56, 58, through the wall 60 of the cover, by pivoting the axis, and in which can be introduced the links of a fastener 62 in U., together with in said holes 50, 52,

  thus blocking the axis 30 in the casing 20 to prevent rotation

  It is obvious to those skilled in the art that, when assembling the apparatus to the winding device of the web, the spring must be tensioned by the pivoting of the web. 'axis, then locked in this tension by insertion of the branches of the fastener 62 in the holes 56, 58, and simultaneously in the holes 50, 52 of the axis 30, locking this axis in the casing and now the spring in its prior winding. The spring return device is

  then connected in operating condition to the winding device

  tape, the blade 12 of the shaft 10 being placed in the

  slot 34 of the shaft 30 to secure these shaft and axis in function.

tioning.

  An alternative embodiment of the invention is

  4, 5 and 6, where the basic parts of the device

  the winding device and the spring device may be identical to those of the first embodiment and, being indicated by the same

  reference numbers, will not be described again. -

  The means shown, which make it possible to link releasably the axis 30 to the housing, comprise in the first place two rectilinear holes, or grooves, 70, 72 formed in the housing.

  end face 32 of the axis, on either side of the slot 34.

  An elongated passage 76 is housed in the cover flange 22 and crosses it in the part surrounding the opening 32 in which

  turns the axis 30, according to a rope, then the opposite side of the flange.

  A straight pin 80, of diameter allowing its introduction without play in the passage 76, has a sufficient length to cross

  the entire length of the passage. This pin advantageously comprises

  at its outer end, a bent part 82,

  facilitating its insertion and withdrawal from the passage 76.

  It is obvious to those skilled in the art relating to the invention that the assembly of this apparatus the spring must be set in condition of winding complete or partial necessary, by the rotation of the axis, followed by its blocking in this condition by aligning one of the holes or grooves 70, 72 on the passage 76, followed by the insertion of the pin 80 therethrough and one of the holes of the axis, which connects releasably the axis to the box by blocking the spring in its prior tension. Setting

  in place is achieved by attaching the spring device to the drum.

  band, by placing the blade 12 of the shaft 10 in the slot 34

  axis 30, to link the two elements in working condition.

  after which the pin 44 is removed to release the spring,

  which then elastically maintains the winding strip. - -

-4

RE V END ICA TI ON S

  1. Seatbelt spring return device comprising a cylindrical housing, a rotating shaft (30)

  therein, a spiral spring (40) surrounding this axis in the bowl

  tier and whose ends are respectively related to the stacker and the axis, and releasable connection means of the axis to the boot, for

  maintain the spring in the desired condition of winding around the axis.

  2. Apparatus according to claim 1, wherein the bot-

  tier comprises a cup-shaped portion (20) having a bottom wall, and said releasable connection means comprise movable elements for mutual connection of said axis and the bottom wall

- of housing.-

  An apparatus according to claim 2, wherein said connecting means comprises spaced holes (56, 58) in the housing and corresponding holes (50, 52) in the bottom of the axis and parallel thereto, a U-shaped clip (62) being inserted

  removably in said housing holes and bottom of the axis.

  Apparatus according to claim 1, wherein the

  box comprises a bowl-shaped portion or bucket and a neck

  its open end, and said connecting means

  include the mobile elements of the mutual connection of

axis and cover.

  Apparatus according to claim 4, wherein the coupling

  there is a hole therethrough, according to its general plane, and the end surface of the axis has at least one groove (70) extending

  crosswise, a pin (80) being inserted into these hole and groove.