| 摘要 |
1,183,036. Releasable fastenings. F.T. PRODUCTS Ltd. 3 July, 1967 [4 July, 1966; 6 Sept., 1966], Nos. 29828/66 and 39813/66. Heading E2B. A resilient clip for retaining a bolt 11 having a shank 29 and a head 28 in an elongate moulding 13 which is formed with a web 32 joining a pair of inturned longitudinal flanges 30, 31 having spaced facing edges, comprises a substantially flat base 15 the width of which is greater than the gap between the facing edges of the flanges of the moulding, a resilient pressure member 22 overlying the base and formed integrally therewith and adapted to engage the web of the moulding to resiliently press the base against the flanges, a slot 16 extending into the base from an edge thereof and adapted to receive the shank of the bolt, the clip having means for resisting withdrawal of the bolt laterally from the slot. In the construction shown the slot has two transverse cuts 18, 19 approximately half way along its length formed in opposite edge portions and the material lying between the cuts 18, 19 and the edge 17 of the base is bent upwardly to form a pair of projections 20 and 21 which constitute the means for resisting withdrawal of the bolt laterally from the slot. The pressure member is in the form of an arm which has two wing elements 24, 25 which are inclined upwardly away from the base 15. In an alternative construction the pressure member is longer than that shown and extends beyond the opposite edge of the base to that from which it extends and it is bowed downwardly and formed with two outwardly extending wing elements which are approximately aligned with the base when the pressure member is unstressed. In this construction the slot is formed with facing arcuate recesses intermediate its length which form a part circular seat for the shank of the bolt and the means for resisting withdrawal of the bolt laterally from the slot are portions of the base laterally on each side of the slot between the arcuate recesses and the edge of the base; these can be resiliently prised apart to accept the shank because the slot extends into the pressure member which thereby acts as a spring for the base. The corners at the entry end of the slot are bent downwardly to form prongs which in use are located between the flanges of the moulding and guide and align the clip in the moulding. |
