Device for adjusting the closing position of a sliding door for a cold storage room

Abstract

 A device for adjusting the closing position of a sliding door (1) for cold storage room having a body (2) with vertical, lateral sidewalls (3) connected on an upper side (5) and on a lower side, at the upper side (5) there being present a guide (15) fixed to a wall (7) of the cold storage room in which there is provided an opening (10) on which the door (1) is adapted to be enclosed, a member (17) for supporting and guiding the door (1) fixed to such body (2) being sliding in such guide and provided with the aforementioned adjustment device. The latter comprises a first portion (25) fixed to the door (1) in rigid position and a second portion (60) bearing the sliding element in the guide that can be positioned and locked in a plurality of different angular positions with respect to such first position (25) so as to allow a different positioning of the door to the wall (7).

Description

[0001] A device for adjusting the closing position of a sliding door for a cold storage room, according to the preamble of the main claim, forms an object of the present invention.

[0002] As known, a cold storage room has an opening in a wall thereof adapted to be closed by a door, usually sliding on a guide arranged at an upper side of the door and fixed to such wall (externally with respect to cold storage room). In such guide there slides at least one and usually two guided elements supported by corresponding support members integral to the body of the door and in particular to the lateral sidewalls of the latter in proximity of the upper side thereof.

[0003] With such doors, there arises the problem related to the fact that the opening of the cold storage room may be provided with a perimeter frame or the thickness of the very door varies as a function of the temperature of the cold storage room with the aim of having a suitable insulation thereof. For such reasons, there arises the need of adjusting, during assembly, the position of the door along the upper guide associated to the wall of the cold storage room with the aim of ensuring the closure thereof on the latter, at the opening provided therein and create the required sealing thereon by means of known gaskets associated to the body of the door, in proximity to the sidewalls thereof and the upper and lower sides thereof.

[0004] Various solutions that allow obtaining such adjustment are known; however said devices adapted to obtain the latter are not easy to use, often they do not allow obtaining the required sealing closure of the door on the wall of the cold storage room around the opening provided for in the latter and they are difficult and complex to mount on the door.

[0005] An object of the present invention is that of providing a device for adjusting the closing position of a door for cold storage rooms that is improved with respect to the equivalent devices of the prior art.

[0006] In particular, an object of the present invention is that of providing a device of the aforementioned type that can be universally used on a door for a cold storage room regardless of the thickness thereof and regardless of whether the opening of the cold storage room on which such door is adapted to be enclosed is provided with a perimeter frame.

[0007] Another object is that of providing a device of the aforementioned type that is easy to use and mount and that is capable of allowing a quick adjustment of the position of the door with respect to the opening of the cold storage room.

[0008] These and other objects which will be apparent to a man skilled in the art are attained by an adjustment device according to the attached claims.

[0009] For a better understanding of the present invention there are attached - purely by way of non-limiting example - the following drawings, wherein:

figure 1 shows an exploded perspective view of an adjustment device according to the invention associated to a door for a cold storage room;

figure 2 shows an exploded perspective view of the device of figure 1;

figure 3 shows a perspective view of the device of figure 1 in a use position; and

figures 4, 5 and 6 show the various use positions of a door for a cold storage room obtained through the use of the device of figure 1.

[0010] With reference to the aforementioned figures a door for a cold storage room is generally indicated with 1 and it comprises a body 2 with lateral sidewalls 3, vertical, connected to each other on an upper side 5 and on a lower side (not shown and moveable in proximity of a floor of the environment proximal to the cold storage room).

[0011] The cold storage room is delimited by a wall 7 having a side 8 outside the cold storage room and another one, 9, inner with respect to the latter. For access into such cold storage room there is provided an opening 10 obtained in the wall 7 adapted to be closed by the door 1; the latter is provided with gaskets 12 on a face 13 thereof faced towards such wall with the aim of providing sealing thereon when it is closed.

[0012] The door moves along a guide 15 integral with the wall 7 in which there slides an element 16 of a support member 17 perforated centrally in 36 which divides such recess from a cavity 37 adapted to contain a cylindrical body 38 integral with a plate 39 and provided with the through hole 40 adapted to be arranged coaxially to that 36 of the wall 35 when such body 38 is inserted in the cavity (cylindrical) 37. From the plate 39 there rises, laterally, a projection 42 provided with a seat 43 adapted to receive a fin 44 projecting from a body 45 having a first cylindrical element 46 projecting therefrom, adapted to penetrate into the recess 31 and having a wall or toothed lateral surface 48 adapted to cooperate with the teeth 33 of the wall 32 mentioned above. The cooperation is such to relatively lock the teeth 33 between those of the wall 48 and thus lock the element 46 in the recess 31. Such locking is obtained by fastening a screw 50, passing in the holes 36 and 40 and in a hole (not shown) of the element 46, with a bolt 51 inserted in a seat 52 of the plate 45, provided on one side 45A of the latter opposite to that 45B from which the body 46 projects. The screw (or corresponding mechanical coupling member) cooperates with an anti-unscrewing member 53 (for example a broken ring) and the seat 52 is closed by a cap 55. The screw 50 also cooperates with a slot seat 56 (so as to allow the adjustment) of a bracket 57 fixed to the side 5 of the door 1.

[0013] The adjustment device comprises a second portion 60 adapted to be constrained to the first through the plate 39 of the door along such guide arranged at the upper part on the side 5 of the door. Such support member 17 is provided with a device for adjusting the position of the door 1 with respect to the opening 10 i.e. to the wall 7 of the cold storage room and adapted to allow adjusting such position regardless of the thickness of the door (as a function of the interior temperature of the cold storage room) and regardless of whether the opening 10 is delimited by a frame 23.

[0014] More in particular, such adjustment device comprises a first portion 25 fixed to the door, for example to each lateral sidewall thereof, by means of usual screws 26 inserted in seats 27 which, preferably are of the slot type so as to allow an adjustment of the position of such first portion 25 along the corresponding sidewall 3 as a function of the position of the guide 15. The seats 27 are covered by a protection casing 28.

[0015] Such first portion comprises an end (upper, with reference to the drawings and the position on the door) 30 having a cylindrical recess 31, with the lateral wall 32 provided with projecting teeth 33 faced towards the internal of such recess. The latter is closed - at the lower part - by a wall 35 and the body 45 and bearing the sliding element 16 in the guide 5.

[0016] More in particular, such element 16 is borne by a shaft 61 coupled to brackets 62 projecting from a body 63 of the second portion 60 mentioned above. Contingently, such shaft 61 penetrates into holes of such brackets and protrudes therefrom through a threaded end 64 thereof on which there is arranged a nut 66 which constrains the shaft to the aforementioned brackets.

[0017] The latter projects from the body 63 which is cylindrical shaped and comprises two opposite recesses 70 and 71, the first facing towards the body 45 and the second towards the plate 39. The recess 70 has a wall 71 provided with teeth 72 adapted to cooperate (so as to be locked) with a toothed surface 74 of a cylindrical element 75 projecting from the side 45B of the body 45 and provided with a through hole opening in a seat 77 provided in the side 45A of such body.

[0018] The recess 70 has a closing wall 78 perforated centrally in 79 which divides such recess from the other one 71. The latter is adapted to penetrate a cylindrical body 80 borne by the plate 39 on the same side of the body 38; the body 80 is perforated in 81 so as to allow the passage of a screw 82 (or corresponding mechanical coupling member), adapted to also penetrate into the hole 79 and that of the body 45 so as to reach the seat 77 and cooperate with a nut 83 arranged therein (which is thus closed by a cap 85). The screw 82 cooperates with an anti-unfastening ring 87 and it is adapted to penetrate into a hole 90 of the bracket 57 so as to fix the second portion 60 to the door.

[0019] A further bracket 100 constrains, through a further screw 101, the first portion 25 to the door 1.

[0020] During use, as a function of the presence or absence of the frame 23 or of the thickness of the door, the position of the first and of the second portion 25, 60 of the adjustment device of the member 17 may be varied so as to bring the door 1 to contact with the wall 7 when it is in closure. Such variation or adjustment is obtained by unfastening the screws 50 and 82, separating the body 45 from the end 30 and from the body 63 and, after positioning the door against the wall 7, placing the element 46 and the element 75 in the recess 31 and in the other one 70 locking the mutual teeth to each other so as to lock the body 45 to the aforementioned portions 25 and 60.

[0021] Thus, due to the cooperation of the teeth of the recesses 31 and 70 with those of the elements 46 and 75 there occurs the mutual locking, in a desired position, of the first and of the second portion 25 and 60 of the member 17, the locking allowing the door to have the desired positioning so as to be sealingly enclosed on the wall 7. For example, the portions 25 and 60 may assume the mutual positions shown in the figures 4, 5 and 6 or intermediate portions between the shown ones, as a function of the needs.

[0022] The adjustment device comprises the portions 25 and 60 mentioned above and part of the member 17 can thus be universally used for any door of a cold storage room, of any thickness and adapted to cooperate with openings regardless of whether they are provided with a frame 23. The use of the device is simple and intuitive, it does not require particular tools and it allows a quick positioning of each (specific) door on the corresponding (specific) opening of a (specific) cold storage room.

[0023] Other variants of the invention (like the one in which the elements 46 and 75 and the corresponding recesses 31 and 70 have teeth projecting in a lesser number than the indicated one) can be obtained in the light of the description above and they are to be deemed falling within the scope of protection of the present document.

Claims

1. Device for adjusting the closing position of a sliding door (1) for a cold storage room, said door (1) having a body (2) with vertical, lateral sidewalls (3) connected on an upper side (5) and on a lower side, at the upper side (5) there being present a guide (15) fixed to a wall (7) of the cold storage room in which there is provided an opening (10) for access to the latter on which the door (1) is adapted to be enclosed, there being provided for at least one member (17) for supporting and guiding the door (1) fixed to such body (2), having a element (16) which is slidable in such guide and provided with the aforementioned adjustment device, said support member (17) comprising a first portion (25) fixed to the door (1) in a rigid position and a second portion (60) bearing the sliding element (16) in the guide that can be positioned and locked in a plurality of different angular positions with respect to such first position (25) so as to allow a different positioning of the door (1) with respect to the wall (7) of the cold storage room and allow a suitable closure of the access opening (10) of the latter, said first portion (28) and said second portion (60) being coupled to each other through a body (45) separable from said portions and fixedly couplable to the latter so as to modify the relative spatial positioning thereof, such body (45) having elements (46, 75) adapted to cooperate in a separable and lockable manner with counter-elements (31, 70) associated to said portions (25, 60), said elements (46, 75) and counter-elements (31, 70) having mutual engagement members (33, 48; 72, 74) adapted to prevent relative rotations between said body (45) and said portions (25, 60), characterised in that said elements (46, 75) of the body (45) adapted to cooperate with said first and second portion (25, 60) are cylindrical elements projecting on one side (45B) of such body, the counter-elements being recesses (31, 70) provided for in said first and in said second portion, said cylindrical elements (46, 75) having toothed lateral surfaces (48, 74) adapted to cooperate with teeth (33, 72) of the recesses (31, 70).

2. Device according to claim 1, characterised in that said elements (46, 75) and counter-elements (31, 70) are constrained to each other by means of mechanical coupling members (50, 82), such members also constraining the entire support member (17) to the door (2) through the constraint to the latter of said first and second portion (25, 60) of the adjustment device.

3. Device according to claim 2, characterised in that there is also provided for the direct fixing of the first portion (25) to the door (1).

4. Device according to claim 2, characterised in that the mechanical coupling members (50, 82) cooperate with a plate (39) from whose one side there projects cylindrical bodies (38, 80) adapted to cooperate with corresponding seats (32, 71) respectively present in the first and in the second portion (25, 60) of the adjustment device, said cylindrical bodies (38, 80) and said portions (25, 60) as well as said elements (46, 75) of said separable body (45) being perforated for receiving said mechanical coupling members so as to fix such plate and said separable body to said portions (25, 60).

5. Device according to claim 1, characterised in that said second portion (60) has a body (63) to which there is associated a support (61) of said element (16) sliding in the guide (15).

6. Device according to claim 5, characterised in that said body (63) has projecting and perforated brackets (62) adapted to receive the support (61) of said sliding element (16), such support being fixed to such brackets and thus to said body (63).

Drawing