FR2821781A1 - ASSISTANCE DEVICE FOR MOUNTING A FASTENING CLIP - Google Patents

Abstract

Assembly aid device, which comprises at least one means for producing a pushing force and at least one means for transmitting said pushing force to an end provided with a tip, with a fixing clip (4 ), consisting of at least one base, in the center of which is formed an orifice (10) intended to receive a mounting pin (5), and from which extend two arms (8) and (9) of which the free ends extend substantially above said orifice (10), characterized in that the pusher (7) comprises at least two distinct pressure zones (11) and (12) which cooperate respectively with the arms (8) and (9) of the clip.

Description

direction of rotation of the ratchet.

  ASSISTING DEVICE FOR ASSEMBLING A CLIP

OF FIXATION

  The invention relates to a device for mounting fixing clips and more particularly to a device for mounting clips which have two arms which act radially on a fixed axis in order to maintain in position.

  heat shields or any other type of element.

  In general, on assembly lines, staples of the type which comprise two arms which act radially on a fixed axis are put in place manually. The assembly is carried out by the operator by exerting a pressure on the arms of the clip in order to allow the sliding of said clip on the fixing axis. However, a certain pressure is recommended for the installation of the staples. The pressurization is therefore more difficult and less precise manually, which can cause a disparity in the quality of the assembly. In addition, the manual positioning of staples 1S repeatedly can cause discomfort and physical inconvenience for the operator, in particular at the fingers. The physical inconvenience caused produces disparities

  in the fastening quality of the clip.

  The publication US-A-5125296 describes a device for mounting clamps produced in the form of a pneumatic gun comprising jaws actuated by means of a trigger. Opening the jaws requires a large space around the attachment area. These measures

  being too bulky, it does not allow access to narrow places.

  Furthermore there is also known a staple mounting device described 2s in the publication W O-A-9926545 which represents a gun comprising a cartridge containing several staples. This cartridge makes the tool heavier and less manageable. In addition, with more complex mechanics,

  the tool is more expensive and risks having more details.

  - 2 In order to overcome these drawbacks, the invention relates to a housing device, manageable and precise, making it possible to set up a staple automatically and in places that are difficult to access while ensuring

  homogeneity in the quality of fixing.

  According to a characteristic of the invention, the pusher comprises at least two distinct pressure zones which cooperate respectively with the

staple arm.

  According to another characteristic of the invention, the pusher is mounted in translation in a guide by limiting the relative rotational movements

o between said guide and pusher.

  According to another characteristic of the invention, the pusher comprises a

  central hole with a diameter greater than the diameter of the mounting axis.

  According to another characteristic of the invention, the junction of the arms with the base of the clip are mounted in translation in grooves made

in direction x in the guide.

  Other characteristics and advantages of the invention will become apparent on

  reading of the description of examples of embodiment of a device for assisting in

  mounting of a fastening clip to the attached drawing in which: - Figure 1 shows a schematic sectional view of the nozzle

the tool according to the invention.

  - Figure 2 shows a schematic sectional view of the tip of

  the tool according to the invention after displacement of the pusher.

  - Figure 3 shows a schematic view of the type of clip used.

  - Figure 4 shows a schematic bottom view of the tip of

  2s the tool according to the invention comprising a staple.

  The present invention relates essentially to the tip of an aid tool

  when mounting staples, the following description does not describe the standard part

  - 3 and known per se of the tool which includes the force transmission elements

  by pneumatic means or other equivalent means.

  As shown in FIG. 1, the tool comprises a rod 1 for connection between a pneumatic system, for example, known per se and a pusher 7, in order to

  s transmit a pushing force to a clip 4.

  The agrate 4, as described in FIGS. 3 and 4, is used to fix flexible walls of the heat shield type for example and has two arms 8 and 9 and a central hole 10. To be put in place, it is inserted on an axis 5 in a direction x. AgraDe 4 has a substantially conical shape. The arms 8 and 9 are attached to the base 17 of the cone in a diametrically opposite manner and extend above the top 18. The arms 8 and 9 of the agrate 4 are attached in such a way that they protrude from the base 17 of the cone and that the

  base of the agrate 4 fits substantially in a rectangle.

  The pusher 7 is mounted in translation along the axis x in a fixed guide 2 which forms the tip of the tool. The agrate 4 is positioned so that the arms 8 and 9 of the latter are in contact with an external part of the pusher 7. As shown in FIG. 4, the pusher 7, of rectangular shape, has two zones of separate pressures 11 and 12, located in opposite corners of the external part of said pusher 7, intended to cooperate respectively with the ends of the arms 8 and 9 of the agrate 4. The pusher 7 also includes a sufficient recess in the central position so not to interfere with the axis 5 intended to receive the clip 4 during

its mounting.

  The guide 2 and the pusher 7 are of rectangular section so that the pressure zones 2s always have the same orientation relative to the body of the tool. Advantageously, grooves 15 and 16 can also be added to the guide 2 in order to limit the rotation of the clip 4 in the end piece and can also serve to hold the clip so that the latter does not fall

during the operation.

  In order to position the clip 4 on the axis 5, the operator places the clip 4 in the end piece of the tool by making the free ends 13 and 14 of the arms - 4 8 and 9 cooperate with the zones d 'support 11 and 12, as shown in Figure 1, and applies the tip of the tool against a wall 6. As shown in Figure 2, it operates a translational movement to the pusher 7 via of the pneumatic control which acts on the rod and which applies the clip 4 against the wall 6. When a pressure is exerted on the aggregate 4 in the direction x, the arms 8 and 9 fold back and move apart l '' of one another thus allowing a sliding of the clip 4 on the axis S. When the operator releases the force provided by the tool, the arms 8 and 9 of the clip 4 are raised and tightened on axis 5 so that the clip

  o 4 is securely locked and holds the wall 6 in place.

Claims (4)

  1) assembly aid device, which comprises at least one means for producing a pushing force and at least one means for transmitting said pushing force to an end provided with a nozzle, with a fastening clip (4), consisting of at least one base, in the center of which is an orifice (10) intended to receive a mounting pin (5), and from which extend two arms (8) and (9 ) whose free ends extend substantially above said orifice (10), characterized in that the pusher (7) has at least 0 two separate pressure zones (11) and (12) which cooperate   respectively with the arms (8) and (9) of the clip.   2) Device according to claim 1, characterized in that the pusher (7) is mounted in translation in a guide (2) limiting the movements   relative rotation between said guide (2) and pusher (7).   i5 3) Device according to any one of the preceding claims,   characterized in that the pusher (7) has a central orifice (10)   with a diameter greater than the diameter of the mounting pin (5).   4) Device according to claim 2, characterized in that the junction of the arms (8) and (9) with the base of the clip (4) are mounted in translation