Arrangement for securing a panel in a rail by tightening outer wedges from an inner side of the panel

1. An arrangement for securing a vertical panel in a longitudinal groove opened vertically upwards for receiving a lower edge of the panel, the panel comprising an inner face and an outer face, the securing being carried out by transverse tightening between transversely opposed wedges, the arrangement comprising:

at least one first upper outer wedge and at least one second lower outer wedge which are each interposed between a vertical outer face of the groove and the vertical outer face of the panel, each of the outer wedges being mounted so as to slide vertically in the groove between a released position and a tight position between the outer face of the groove and the outer face of the panel;

at least two movable transmission members which are interposed between the edge of the panel and a bottom of the groove and which are each adapted to transmit a sliding force to an associated outer wedge applied from an inner side of the panel;

wherein the upper and lower outer wedges slide vertically upwards from their one released position to their tight position located above the released position.

2. The arrangement according to claim 1 , wherein, for controlling the outer wedges towards their tight position, all movable transmission members are biased in compression by at least one control device which is arranged on the inner side of the panel.

3. The arrangement according to claim 2 , wherein each movable transmission member is formed by at least one rigid element in the form of a semicircular segment which is slidably received in a channel of complementary shape arranged between the edge of the panel and the bottom of the groove.

4. The arrangement according to claim 3 , wherein the transmission members are mounted parallel to each other.

5. The arrangement according to claim 3 , wherein the channel is formed in a cradle which straddles the edge of the panel and which is interposed between the panel and the bottom) of the groove.

6. The arrangement according to claim 5 , wherein each outer wedge is interposed between an outer flange of the cradle and the outer face of the panel.

7. The arrangement according to claim 5 , wherein the at least one control device comprises two separate control devices for independently controlling the sliding of the upper outer wedge and the lower outer wedge.

8. The arrangement according to claim 7 , wherein each control device comprises at least one screw which is capable of biasing each transmission member, the control screw being screwed into a nut which is mounted in a fixed manner with respect to the cradle in order to allow the axial displacement of the control screw relative to the cradle by screwing or unscrewing, each control device controlling the tightening of each of the upper and lower outer wedges independently of each other.

9. The arrangement according to claim 5 , wherein the at least one control device is common to the two upper and lower outer wedges to allow their simultaneous tightening.

10. The arrangement according to claim 9 , wherein the control device comprises at least one control screw which is screwed into a nut which is mounted so as to slide vertically in the cradle, the downward sliding of the control screw biasing the transmission member associated with one of the outer wedges towards its tight position, while the upward sliding of the nut biases the transmission member associated with the other of the outer wedges towards its tight position by means of force return means, the tightening of the outer wedges thus being achieved simultaneously by screwing the control screw into the nut.

11. The arrangement according to claim 7 , wherein the force return means are formed by at least one cam slidingly integral with the nut and by at least one pusher guided in displacement along an arcuate path in the cradle, the cam being capable of moving a cam follower of the pusher away from the axis of the control screw by causing a lower end of the pusher to slide downwards in order to push the associated transmission member.

12. The arrangement according to the preceding claim 11 , wherein the control device comprises two cams and two pushers arranged symmetrically with respect to the axis of the control screw.

13. The arrangement according to claim 1 , wherein at least one of the outer wedges moves transversely towards the panel as it slides towards its tight position, said outer wedge comprising a tightening face which is turned towards the outer face of the panel.

14. The arrangement according to claim 13 , wherein a shim is interposed between the outer face of the panel and the tightening face.

15. The arrangement according to claim 1 , wherein at least one of the outer wedges moves only vertically when sliding into its tight position, at least one transversely slidably mounted tightening pad being interposed between at least one of the outer wedges and the outer face of the panel, the tightening pad comprising a tightening face facing the outer face of the panel.

16. The arrangement according to claim 15 , wherein a shim is interposed between the outer face of the panel and the tightening face.