| 摘要 |
PCT No. PCT/EP87/00032 Sec. 371 Date Sep. 30, 1987 Sec. 102(e) Date Sep. 30, 1987 PCT Filed Jan. 24, 1987 PCT Pub. No. WO87/04674 PCT Pub. Date Aug. 13, 1987.The device consists of a guide strip (1) and a guide sleeve (2) movable along the guide strip (1), said sleeve being if possible, composed of a top section (2a) having a wide side at the front and a bottom section (2b) having a wide side at the rear, and of a spring strip, preferably in the form of a wide leaf spring (8). On the rear broad side of the guide sleeve (2) recesses or engagement lugs (7) are provided, whereas along the axis (3) of the guide strip (1) or symmetrically thereto, corresponding engagement lugs or recesses (4) are arranged. The engagement lugs (7) and recesses (4) mentioned enter into mutual engagement from the rear of the guide strip (1) as soon as they are in register by moving of the guide sleeve (2) on the guide strip (1). They are secured in this locking position by the leaf spring (8). To release, the guide sleeve (2) is pressed in the direction of arrow (10) towards the front face of the guide strip (1), and after this a further sliding movement and height adjustment can be effected. The tractional forces are operative, in the event of loading (collision), in the opposite direction to the arrow (10). The guide sleeve (2) is then in its locked position. It is a device of extremely simple design, safe manipulation and operation, and is very adaptable. Particularly attractive is the securing of a return-travel fitting to a threaded sleeve (12) on the front wide side of the guide sleeve (2).
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