FI58194B - ANORDNING VID LAOSHAKE FOER ARBETSSTAELLNING - Google Patents

Description

PtiSFH [B] (11) ADVERTISEMENT] ULICAISU -ft1Q '^ Ta L J'; UTLÄGGN I NGSSKRIFT D Ο Ί y 4 C Patent granted 10 12 1930 * ίίϋΐΊ ^ Patent oeddelat (S1) Kv.ik.Va.3 e 04 G 7/00, E 06 C 7/06 FINLAND —FINLAND (21) Pittnttlhik # im «—PstMCsmBkning 7 ^ 17 ^ 2 (22) Hftkamltptlvi - AmBknlngtdag 01.06.78 (23) The beginning of the cloud — Glltlgh« tsdtg 01.06.78 (41) Tulhit {ulktoakii - Bltvlt offwtllg 30.12.78

National Board of Patents and Registration (44) Date of issue and issue. -

Patent- och registerstyrelsen AnsBkan utiagd och uti. * Krift * n pubikwad 29.08.80 (32) (33) (31) Pyydetty «tuolkmit —Begird prlorltet 29.06.77

Sweden-Sweden (SE) 77076 ^ 2-0 "" (71) (72) Per Olof Lissmyr, Box 132, S-792 01 Mora, Sweden-Sweden (SE) (7 * 0 Oy Heinänen Ab (5I +) Equipment for workbench in the lock hook - Anordning vid läshake för Arbets-ställning

The present invention relates to a device in a lock hook of a work stand, which work stand consists of at least two movable parts relative to each other! a part, wherein at least one lock hook is fitted to the second part and the second part has at least a plurality of stops, one at a time intended to engage the lock hook.

The work stand and the like, which consist of two or more preferred telescopically arranged parts, must have a space between the parts so that they can be moved with each other. On the other hand, when the parts of the work stand have been moved to the desired position, they must be together! interconnected in such a way that the spaces i between the parts are as small as possible, otherwise the stability of the rack will be jeopardized. The object of the invention is to provide a device which automatically ensures that the intermediate space required for the transition exists during the movement of the parts 5.8194, but when the desired position is reached the parts are rigidly connected, i.e. without the intermediate space.

The device according to the invention is essentially characterized in that the locking hook is connected to the second part by means of a limited displaceable intermediate member which, as long as the locking hook is in the operative abutment position, assumes its first displacement position; is moved to its second displacement position, and that the displacement movement of the intermediate coupling member is adapted to act on pivotable locking pieces arranged in one of the two parts, which in the first position bridge the space between the displaceable parts and in the second position release said space.

An embodiment of the device according to the invention will be described in more detail below with reference to the accompanying drawing, in which Figures 1 and 2 show side and front parts respectively of two rack parts with intermediate member and lock in first transition position and Fig. 3 ;

Of the two parts of the stand which are movable relative to each other, only two side pieces 8 and 11, respectively, are included in the drawing for simplicity. In the example shown, the side piece 11 is required to be fixed, while the side piece 8 is movable up and down.

Between the side piece 8 and the side piece (not shown), which is included in the movable part, extends a number of rods 9 defining positioning positions for said parts. Between the side piece 11 and the second non-shown side piece, which belongs to the fixed part, a pair of rods 5 ·! i

Generally, each part consists of two pairs of side pieces 8 and respectively 11, which are connected so that each part has a rectangular cross-section. In the example shown, the side piece 8 forms an angle in one part which is threaded inside the part in which the side piece 11 is included. The former part is thus movable outwards and downwards inside the latter part.

The lock hook box, which forms an intermediate coupling member and is denoted by the reference numeral 1, consists of a pair of interconnected plates 58 5844 and 12, between which there is a pivot pin 10 for the locking hook 2. There is an elongate hole 6 at each end of the lock hook. lovi 14.

Each rod 5 as a whole has a sleeve marked with reference numeral 15 as being rotatably mounted. The sleeve has a small cylindrical part 16, the diameter of which corresponds to the width of the holes 6 in the intermediate part 1 and along which a cam-like protrusion 7 extends. »Which is substantially cylindrical in its circumference but has a substantially planar part 3, so that the sleeve part in question forms an eccentric.

In the installed position, the smaller sleeve part 16 extends through the holes 6 in the plates of the intermediate part, whereby the protrusion 7 engages the notch 14. The thicker part extends past the side piece 8 in the movable part, which runs diagonally along the side piece 11.

The lock hook 2 is pivotable between the shown gripping position determined by the pin 18 gripping the end of the lock hook 13 and the inwardly moved position, the protrusion of the hook being located inside the edge of the lock hook box 1. · I

A spring 4 is tensioned between the lock and the bracket suitably fitted to the sleeve 15 in such a way that it tends to turn the hook outwards towards the gripping position and to rotate the sleeve 15 ·

A locking plate 19 is arranged on the lock hook to facilitate the mutual transfer chute past the positions to be passed.

The device according to the invention operates in the following way. When, via the rope winding part (not shown), the part included in the cord side piece 8 is lifted so that the pressure of the rod 9 adhering to the lock hook ceases against it, the spring 4 will move the lock hook box 1 upwards to the position shown in Fig. 1. During the upward movement of the lock hook box, due to the adhesion between the cam projection 7 and the notches 14 of the holes 6, the sleeves 15 at both ends of the box come to rotate by about 60 °. As a result, the part 17 thicker than the same sleeves will assume its position, whereby the planar part 3 extends towards the side piece 8 of the part to be moved. A desired intermediate space S is thus created between said planar part and said side piece.

4 58194

When the intended position has been reached and the lock hook is again made to grip the displaced part and take the load therefrom, the lock hook 2 and with it the lock hook box 1 are pulled down against the action of the spring 4. The notches 14 and the cam projections 7 then cause the sleeve to rotate again, whereby the planar part of the thicker part 17 rotates away, so that the cylindrical part of the same part will press against the side piece 8. As a result, as shown in Figure 3, the intermediate space becomes removed.

The invention is not limited to what is described and shown in the drawings, but can be modified in many ways within the scope of the following claims.

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Claims (2)

5,581 94 A device in a lock hook of a work stand, which work stand consists of at least two parts movable relative to each other, wherein at least one lock hook is arranged in one part and the second part has a plurality of stops one by one for gripping the lock hook, characterized in that the lock hook (2) is connected to the second part by a spacer (1) with limited movement in the direction of movement of the parts, which, as long as the lock hook is in the operative engaging position, assumes its first displacement position, but when said engagement ceases, the displacement movement is adapted to act on pivotable locking pieces (15) arranged in one of the two parts, which in one position bridge the space between the movable parts (8, 11) and in the other position release said space (5). Device according to claim 1, characterized in that the locking pieces (15) consist of rotating eccentric or cam-like members (3, 17) mounted on the second part (II), which are rotatable in a position in which the protruding part (17) engages the second part (8). ) and a position in which said part (17) is spaced apart from said part. Device according to claim 2, characterized in that the rotational movement of the eccentric or cam-like members (3, 17) is provided such that the intermediate coupling member acts on the cam-like part (7) of said members.