FI84515B - STAENGNINGSANORDNING, SAERSKILT FOER STAENGNING AV DOERRAR I KAKETBILAR, KONTAINER, FRYSBILAR OCH MOTSVARANDE. - Google Patents

Abstract

The closure device comprises a T-shaped element (8) having a vertical portion (9), fixed to the end (1a) of a rod (1) rotatable on the face of the shutter of the door, and a horizontal part (10) fork-shaped at one end, with curved prongs (10a,10b) insertable within a coupler element having a double lug (19) protruding at one end of a plate-like element (16) fixed to the door-frame of the vehicle, said horizontal part (10) of said T-shaped element (8) having a longitudinal groove (13) engaging an element in the shape of a continuous rib (18) provided on said plate-like element (16). The coupling between the hook (8) and the coupler (16) begins when the curved tips (11,11a) of the prongs (10a,10b), as a consequence of the initial rotation of the vertical rod (1), act as levers by resting on the double lug (19) and force, by means of a further rotation of the fork-bearing rod, the rib (18) of the coupler to be gradually inserted in the longitudinal groove (13) until, when the coupling is achieved, the end of the horizontal part (10) of the T-shaped element (8) rests against an arrester abutment (20).

Description

1 84515

Closing device, in particular for closing a door in vans, containers, refrigerated trucks and the like. Stängningsanordning, särskilt för stängning av dörrar i paketbilar, kontainer, frysbilar och motsvarande.

The invention relates to a closing device, in particular for closing a door in vans, containers, refrigerated trucks and the like, which gives the door the greatest possible stability when closed, regardless of the type and direction of tension to which said closing is subjected when moving the vehicle.

Various systems have long been known and used based on presses to ensure the closing of the front and side doors of vans and containers in general. Typically, these mechanisms comprise one or more rods mounted vertically and rotatably outside the door, be it a single door or a door with two closures with the free sides partially overlapping in the closing phase; at the opposite ends of each rotating rod there is a fork-like (or eccentric) closing member arranged at an angle of 90 ° to the longitudinal axis of the rotating rod, attached at the final stage of closing the door to different pointing outwards from said upper body, the forks thus connecting the respective connecting members when moving the door close to the closing space and "pulling", i.e. forcing said closure into a supportive closure during the final steps of rotating the fork-bearing bar.

These known press designs for closing a door in vans and the like, while allowing the doors to be closed firmly, are virtually unable to effectively withstand the stresses to which the presses are exposed due to both the load being moved and the movement itself on the road. As is known, this type of press must be able to cover all possible resilient deformations in an assembly consisting of a door frame or top and closures relative to them, and to withstand as much vertical and bouncing stresses as possible along the vertical axis of the presses. The closing member must also react to the internal stresses created by the load resting against the latches during the acceleration of the vehicle and resist the torsional stresses caused by road deformations.

In order to partially eliminate these drawbacks and disadvantages, hook-like connecting pieces provided with an edge or a protrusion have already been shown in the form of a substantially truncated cone at the opposite end and axial to the end of the connecting fork bearing head. Once the connection has been made, the protrusion is positioned in a correspondingly shaped groove in the connecting plate; this prevents the fork from moving during the closing with respect to the rod rotating transversely and therefore it resists any tension which occurs transversely with respect to the closures, ensuring a firm closing in this direction. However, these known fittings are not able to withstand all the other aforementioned stresses to which the press is subjected during the transition and which compromise the press's own stability.

It is therefore an object of the present invention to provide a door closure device, in particular for closing a door in vans, containers, refrigerated trucks and the like, which can overcome the disadvantages and shortcomings of known systems and in particular be able to cover all elastic deformations affecting the door frame / closure assembly. is able to withstand, with the greatest possible efficiency, the varying stresses to which the closure is normally exposed during the movement of the vehicle on the road or the like, such as during carriage.

3,84515

Another object of the invention is to provide a structurally simple and highly reliable door closing device which is easy to use when closing and opening and which can also be adapted for use with two or more closing bars for two closures depending on how much load is carried and the requirements for strength and safety. .

A closure device according to the invention, in particular for closing a door in vans, containers, refrigerated trucks and the like, the closure device having one or more rods rotatably connected to the door, a hook connected to the ends of said rods, a connecting piece rigidly connected to the door opening frame, a hook, a vertical part a horizontal part shaped at one end as a fork and having curved spikes with a groove between them, the connecting piece comprising a plate-like body attached to the door opening frame, a protrusion projecting from the plate-like body and having an outer shape corresponding to the inner shape of the groove arranged at one end of the protrusion perpendicular to the protrusion, when the rod is rotated the curved forks of the fork are placed on the connecting piece to provide a closed position in which the fork grips the two lugs transverse piece and the groove engages the protrusion to close and lock the door, characterized in that the double-lug transverse piece is substantially cylindrical in shape and its ends protrude above and below the protrusion, the protruding support being arranged in a plate-like body opposite the double-lug transverse head the planar surface of the head, the protruding support projecting towards the end of the protrusion to which the double-eared transverse piece is attached to form an acute angle between the plate-like element and the protruding support, the horizontal part is partially bevelled and partially inclined so that the planar surface fits the protrusion is continuous and extends 4 84515 along the plate-like element from the double-eared transverse piece to the protruding support, the groove is continuous and extends in the horizontal part into a fork formed from the end to the opposite end so that the groove is open at the end, the fork tines have curved tips, the size of the tips, fork, groove and protrusion being such as to initiate coupling between the hook and the connector when the curved tips of the tines act as levers as a result of the rotation of the rod, as the rod is further rotated, the longitudinal groove gradually settles around the protrusion, and when the coupling is completed, the inclined plane of the horizontal part rests firmly against the protruding support.

More specifically, both said longitudinal grooves present in the horizontal portion of said T-shaped body and said protrusion pointing outwardly from said plate-shaped body have a substantially conical cross-section to facilitate their interconnection and improve their stability.

The invention is described in more detail below, primarily as a whole, but does not exclude any detail, by way of non-limiting example with reference to the accompanying figures, where:

Fig. 1 is a schematic front view of a conventional closure member for container doors and the like;

Figure 2 is a side elevational view of a hook according to the invention separated from a rotatably steerable rod;

Figure 3 is a front view of the hook of Figure 2;

Fig. 4 is a top plan view of the hook of Fig. 2 in section A-A; 5,84515

Fig. 5 is a cross-sectional view taken in section B-B of Fig. 2;

Fig. 6 is a front view of the hook connecting piece of Fig. 2;

Figure 7 is a top plan view of the connector of Figure 6;

Fig. 8 is a cross-sectional drawing in section VIII -7ΪΪΪ of Fig. 6:

Fig. 9 is a cross-sectional view taken along section IX-IX of Fig. 6;

Fig. 10 is a drawing of the location of the hook of Fig. 2 as it approaches the connector of Figs. 6 and 7;

Fig. 11 is a front view of the corresponding connecting piece of the hook fork; and

Fig. 12 is a partial sectional view of the joint of Fig. 11.

Referring to said figures, and in particular to Figure 1, a conventional press for doors or latches in vans and the like consists of at least one rod 1, usually tubular at least at its ends, mounted vertically and rotatably on the outside of the door and, in the case of a door with two latches, installed in the area where the closures overlap; the rod 1 is rotatably supported at its ends by supports 2 and between them by supports 3. The rod-like handle 5 hangs perpendicular to the rod from the support 4, in order to rotate the closure. The handle 5 can be rotated after the closure is closed until it is at 5a, drawn in broken lines, and can be locked to the support 6 by means of a lock 7 or the like.

6,84515

The hook parts intended to be inserted into the rigidly connected connecting pieces to the door opening frame of vans or containers are rigidly connected to the ends 1a of the rod 1 and form essentially the main features of the present invention and will be described in more detail below with reference to Figures 2-12.

Thus, with reference to the present invention, the closure member comprises a hook welded to the ends of the rod 1 and joints welded or bolted to the upper and lower edges of the body of the vehicle door opening, said door opening not being shown in the figures.

The hook consists of a substantially T-shaped body, substantially indicated by the number 8 in Figure 2, with a vertical portion 9 positioned around the ends 1a of the rotating tubular rod 1; the edge 9a forms a base against the head support 2. The horizontal part 10 of the T-shaped body consists in part of a hook part and a setting piece.

The other end of the hook part 10 is made in the form of a fork 10c, the spikes 10a to 10b being provided at their ends with two teeth, or tips, 11a to 11b, rounded outwards according to the plane of the door (Figures 2-3), i.e. . The horizontal portion 10 of the T-shaped body is longitudinally grooved along its entire length to form a continuous groove 13 having a substantially conical cross-section; said groove is open at an end 14 opposite the fork end; the head 14 is rounded and connected to the lower inclined plane 15 for reasons which become apparent below.

As previously mentioned, two similar hooks 8 are placed at opposite ends of the rotating rod 1, as schematically shown in Fig. 1. Figure 5 shows a cross-section of the vertical part 10 along the line B-B in Figure 2.

The connector, mounted to co-operate with the hook 7 84515 described above, # consists of a plate-like body 16 (Figures 6 and 7) provided with points # where it can be attached to the vehicle door frame # as for example, bolted to holes 17 or welded.

The enlarged part forming a continuous protrusion 18 having a substantially conical cross-section, clearly shown in Fig. 9, is rigidly connected to said plate 16 and its size is such as to fit into the longitudinal groove 13 of the hook 8.

The other end of the protrusion 18 is provided with a transverse body 19, the other end being provided with a base or an outwardly pointing base 20 (Fig. 7), against which the plane 15 of the hook rests when the connection is activated.

The closing member operates as follows (Fig. 10): by moving the handle of the rotating rod 1 with opposite hooks, the door rotates with its hinges along the accumulation radius R so that the hooks 8 move from position 8 to position 8a, etc. until the hook fork tips 11-11a touch the double lug 19; by changing the direction of accumulation of the rod 1 on the first mutual contact 19a of the tips and the double lug, the hook is placed in the connecting piece, because the fork tips act as lifting levers resting against the double lug.

With the latches closed, the hook is in the position shown in Figures 11 and 12 where: a) the fork 10a to 10b #, which is attached by a double lug, covers the outwardly directed stresses against the door from the inside; b) the end plane of the hook rests against the base 20 #, whereby all lateral force components are covered, and c) a conical connection between the groove 13 and the edge 18.

8 84515 by preventing all possible clearances eliminates vertical elastic stresses while reacting to torsional stresses.

In addition, the double lug is attached to the largest possible length and thus the closure is "pulled" into the door frame, making it easier to place a seal made of rubber or the like around it.

Of course, the invention described above is practically modifiable in terms of structural and functional corresponding modifications and alternatives without, however, altering the scope of the invention.

Claims (5)

9,84515 A closing device, in particular for closing a door in vans, containers, refrigerated trucks and the like, the closing device having one or more rods (1) rotatably connected to the door, a hook (8) connected to the ends (1a) of said rods (1), a connecting piece (16-20) rigidly connected to the door opening frame, the hook (8) has a vertical part (9) fixed to the end (1a) of the rod (1) and a horizontal part (10) shaped at one end into a fork (10c) and provided with curved spikes (10a) , 10b), between which there is a groove (13), the connecting piece (16-20) comprises a plate-like body (16) fixed to the door opening frame, a protrusion (18) projecting from the plate-like body (16) and having an external shape corresponds to the inner shape of the groove (13), and the double-eared transverse piece (19) is arranged at one end of the protrusion (18) perpendicular to the protrusion, when the rod (1) is rotated by the curved spikes (10a, 10b) settle on the connecting piece (16-20) to provide a closed position, in which position the fork (10c) engages the double-lined transverse piece (19) and the groove (13) engages the protrusion (18) to close and lock the door, characterized in that the double-lined transverse piece (19) ) is substantially cylindrical in shape and its ends protrude above and below the protrusion (18), the protruding support (20) is arranged on the plate-like body (16) at the opposite end of the double-eared transverse body (19) to receive the horizontal surface of the horizontal part (10) 15), the protruding support (20) protrudes towards the end of the protrusion (18) to which the double-eared transverse piece (19) is attached to form an acute angle between the plate-like element (16) and the protruding support (20), the plane of the horizontal part (10) ) is partly bevelled and partly inclined so that the planar surface (15) fits the shape of the projecting support (20). n in the closed position, the protrusion (18) is continuous and extends along the 10 8451 5 plate-like elements from the double-eared transverse body (19) to the projecting support (20), the groove (13) is continuous and extends in the horizontal part (10) to the end (14) so that the groove (13) is open at the end (14), the spikes (10a, 10b) of the fork (10c) have curved tips (11, 11a), whereby the fork (10c) of the tips (10a, 10b), the size of the groove (13) and the protrusion (18) is such as to initiate the coupling between the hook (8) and the connecting piece (16-20) when the curved tips (11, 11a) of the spikes (10a, 10b) act as levers resting against the double lug lugs as a result of the rotation of the rod (1), as the rod (1) is further rotated, the longitudinal groove (13) gradually settles around the protrusion (18), and when the coupling is completed the inclined plane surface (15) of the horizontal part (10) rests firmly against the protrusion evaa support (20). Device according to claim 1, characterized in that the groove (13) and the protrusion (18) have a substantially conical cross-section in order to facilitate their interconnection and to improve the stability of the device. Device according to claim 1, characterized in that the curved tips (11, 11a) of the spikes (10a, 10b) of the fork (10c) are in the shape of a tooth or the like, the curved tips (11, 11a) are arranged to form spikes (10a, 10b) start-up support areas in the double-eared transverse body (19). Device according to one of the preceding claims, characterized in that the plate-like body (16) supports a double-lug transverse body (19) and the protrusion (18) is rigidly connected to the door frame, the plate-like body being provided with holes (17) for bolts. 11,8451 5 P§tentkrav