IT201800001900U1 - Release device for motorized door - Google Patents

Description

DESCRIPTION of the utility model with TITLE:

RELEASE DEVICE FOR MOTORIZED DOOR

CONTEXT OF THE FOUND

The present invention relates to an unlocking device, with lock, for a motorized door such as for example a sectional door.

STATE OF THE ART

The use of motorized doors is known, for example sectional doors, equipped with an electric motor which, powered by mains electricity, is arranged to raise and lower the door without any effort on the part of a user.

Motor release devices are known which, in the event of a power failure (e.g. due to a black-out), or in the event of an electric motor failure, can be operated by the user in order to mechanically disengage the motor. from the door itself in order to allow the user to manually raise or lower the door without any resistance opposed by the electric motor itself.

A first type of release device comprises a revolving lever, mechanically connected to the electric motor, and associated with a lock cylinder, located in an area close to the lever, which enables / prevents its rotation. Once a special key has been inserted and rotated in the aforementioned lock, the latter enables the rotation of the lever; at this point the lever can be operated to release the aforementioned electric motor.

This solution therefore requires the assembly on the door of both the lever and the lock cylinder, which being to be applied in mutually distinct areas of the door, require two specific holes or processes to obtain the respective housing seats. This solution is therefore rather complex from a structural point of view, expensive, and expensive in terms of time and labor required for its assembly.

Furthermore, the levels of reliability and safety provided by this technical solution are not always considered satisfactory.

Another type of release device comprises a normal lock cylinder, the so-called "round cylinder", which is received, releasably, in a special bush-type element fixed to the door. A cable is connected to the rear end of the cylinder and is connected to the coupling and release area that is provided between the electric motor and the door. The aforementioned cylinder, once rotated using the appropriate key, can be extracted from the respective bush element that contains it, and it is thus possible to pull the aforementioned cable in order to intervene on the coupling and release area, thus disengaging the motor. from the door itself. The bush element is fixed to the door by providing a plate on the front face and an additional plate on the rear face of the door; the two plates, therefore arranged on the opposite faces of the door, are interconnected by means of special screws. The fixing operation is rather laborious and often requires the simultaneous presence of two operators, on opposite sides of the door.

Although this technical solution is well functioning and also cheap and simple to build, it would be desirable to improve both the reliability and the safety levels provided.

There is also still the need to provide a technical solution that greatly simplifies and speeds up the assembly operations of the release device on a door, while ensuring higher levels of mechanical reliability and security against break-in attempts.

AIMS OF THE FOUND

An object of the present invention is to improve the current release devices for motorized doors.

In particular, an object of the present invention is to provide a release device which is particularly convenient and easy to assemble, which is constructively simple and economical to produce and which is equipped with higher levels of security against burglary.

BRIEF DESCRIPTION OF THE FIND

The above is achieved by means of an unlocking device for a motorized door, comprising:

- a housing body designed to be received and fixed in a seat opening made on said motorized door,

- a key cylinder-assembly, shaped to be removably received in said housing body, and to which a first end of a cable is connected, able to be connected, at a second end, to a release member of a motor of said motorized door,

- said cylinder group with key comprising a European profile cylinder configured to enable / disable, by means of a key, an extraction of said cylinder group from said housing body, said extraction allowing, with a pulling action transmitted through said cable, to act on said release member in order to mechanically uncouple said motor from said motorized door and therefore allow the manual movement of said door, - a positioning element adapted to be fixed on a rear face of said motorized door and shaped to coupling with and guiding said housing body into a correct mounting position, holding means configured to couple with said housing body and to cooperate with said positioning element so as to retain said housing body in said mounting position already preliminarily to a subsequent tightening step with screw elements, said means of retention by preventing disengagement of said housing body from said seat opening and allowing an operator to comfortably tighten said housing body on said door by himself by means of said screw elements.

Thanks to the device according to the invention, the limits associated with the release devices of the state of the art are overcome.

BRIEF DESCRIPTION OF THE DRAWINGS

These and further characteristics according to the present invention will become clearer from the following description with reference to the attached drawings, in which:

Figures 1 and 2 are two perspective views, respectively from a front side and a rear side, of the device according to the present invention;

Figure 3 shows a cylinder group which forms part of the device according to the present invention;

Figure 4 is a perspective view showing the front side of a motorized door on which the device according to the invention is mounted, in which the device is in a "stand-by" position, i.e. it does not intervene on the release of the motorized door motor;

Figure 5 is an enlarged detail of Figure 4;

Figure 6 is a perspective view showing the rear side of a motorized door on which the device is mounted in the “stand-by” position;

Figure 7 is an enlarged detail of Figure 6;

Figure 8 is a front perspective view of the motorized door with the device in an operating position for unlocking the door motor;

Figure 9 is an enlarged detail of Figure 8;

Figure 10 is a rear perspective view of the motorized door on which the device is mounted in the operating position for unlocking the door motor;

Figure 11 is an enlarged detail of Figure 10;

Figures 12 and 13 are two exploded views of the device according to the invention;

Figure 14 is a front view of the device;

Figure 15 is a section taken along the XV-XV plane in Figure 14;

Figure 16 is a section taken along the XVI-XVI plane in figure 14;

Figure 17 is a section taken along the XVII-XVII plane in figure 14;

Figures 18 to 20 are different views of a European profile cylinder included in the device according to the invention.

DETAILED DESCRIPTION OF THE UTILITY MODEL

The general characteristics of the present invention will be illustrated hereinafter through an exemplary and non-limiting embodiment.

With reference to the attached drawings, a release device 1 for a motorized door 2 is described, in particular, but not in a limiting manner, a sectional door 2, operated by a motor M to be raised and lowered.

The device 1 comprises a housing body 3 adapted to be received and fixed in an opening 4 with a seat formed in the thickness of the aforementioned door 2.

The housing body 3 comprises a cylindrical portion 12 shaped to be received in the aforementioned opening 4 with a seat formed in the door 2, and a front abutment portion 13, annular in shape, able to abut on a front face surface 14 of the door 2 motorized.

The housing body 3 is made of a high-strength tear-proof and anti-drill material to resist drilling attempts with a drill or, in general, break-in attempts. A more detailed example of material that can be used for making the housing body 3 will be provided below.

The release device 1 further comprises a key cylinder unit 5, shaped to be removably received in the aforementioned housing body 3.

The cylinder-group 5 comprises a cylinder-support 15 shaped to support, with fixing means 16, a cylinder C with a European profile. The European profile cylinder C is configured to enable / disable, by means of a key K, an extraction of the cylinder group 5 from the housing body 3. In particular, with reference to figures 18 to 20, a cylinder C of the half-cylinder type, with total length LT equal to 41 mm; the distance L1 of the mounting hole 33 from the front end is 31 mm. However, it is possible to provide different dimensions according to specific assembly requirements.

In the device 1, a contrast plate 22 is provided which is fixed in the housing body 3 and is configured to interact with an ingenious element 23 of the aforementioned European profile cylinder C. More precisely, the contrast plate 22 is equipped with fins 31 which engage in suitable holes 30 provided on the longitudinal wall of the housing body 3. A screw 32 engaging in a threaded hole of the contrast plate 22 firmly secures the latter to the housing body 3.

In a closed position of the European profile cylinder C, the contrast plate 22 is an obstacle to the ingot element 23 to prevent and disable the extraction of the cylinder assembly 5 from the housing body 3. Otherwise, in an opening position of the European profile cylinder C, the extraction of the cylinder-group 5 from the housing body (3) is enabled.

Connected to the cylinder-group 5 is a first end E1 of a cable 6 adapted to be connected, at a second end E2 thereof, to a release member 7 of the motor M.

In the support-cylinder 15 there is a circular opening 17 which allows you to insert the key K in the European profile cylinder C. The cylinder support 15 can be inserted into and removed from the housing body 3 from an external side of the motorized door 2, that is to say from the front side 14 of the door 2.

The extraction of the cylinder-group 5 allows, with a pulling action transmitted through the cable 6, to act on the release member 7 in order to mechanically uncouple the motor M of the motorized door 2 and thus allow its manual movement.

The cylinder-group 5 also includes a protective ring 18 positioned at the circular opening 17 and arranged to cover the front end of the European profile cylinder C. On the protective ring 18 there is a through slot 19 for the insertion of the K key.

The protective ring 18 is coupled in a freely rotatable manner with respect to the support-cylinder 15 and to the European profile cylinder C: this makes it extremely difficult, practically impossible, to drill a hole on said ring 18, as the latter would be driven in rotation integrally with the drill bit, canceling any attempt of abrasion or chip removal. Furthermore, the protective ring nut 18, as well as the cylinder support 15, are made of a high tear-resistant material to resist drilling attempts with a drill or, in general, burglary attempts.

To further increase the level of security and the degree of anti-burglary resistance, a pin element 20 in hardened drill-resistant material is included in the cylinder assembly 5, housed along a hole 21 which extends through the cylinder support 15, transversely with respect to the longitudinal axis L of the European profile cylinder C. Said pin 20 makes vain any attempt to drill with a drill aimed at reaching the European profile cylinder C.

The external front surface of said protective ring 18 is substantially flush and coplanar with the external front surface of the support-cylinder 15, and the further external front surface of the support-cylinder 15 substantially does not have stepped areas and / or gaps in the perimeter interfacing with the front abutment portion 13 of the housing body 3. This configuration allows you to successfully counter any attempt to grab and tear aimed at burglary, thus contributing to the safety and resistance of the device 1.

The device 1 comprises a positioning element 8, in particular having a washer shape, adapted to be fixed on a rear face 9 of the motorized door 2 and shaped to couple with and guide the housing body 3 in the correct position PM of mounting through opening 4 to seat.

In particular, the positioning element comprises a flat washer area 8 from which two pairs of projecting portions 24 are projected in a direction parallel to the longitudinal axis L of the housing body 3. During assembly, the projecting portions 24 are arranged outside, and on opposite sides, of a rear part of the wall of the housing body 3. The positioning element 8 can be fixed to the rear surface 9 of the motorized door 2 by means of special screws 25.

The device 1 also comprises retaining means 10 configured to couple with the housing body 3 and to cooperate with the washer positioning element 8 so as to retain the housing body 3 in the mounting position PM already preliminary to a subsequent step clamping with screw elements 11.

The retention means 10 include through retention holes 26 made on opposite areas of a rear region of the wall of the housing body 3. In particular, the holding means 10 comprise a rod 27 shaped to be received in the aforementioned holding holes 26 so as to be arranged transversely with respect to the longitudinal axis L of the housing body 3.

On the end areas of the rod 27 there are threaded holes 28 arranged to engage with screws 11 that can be screwed to match and insist on the positioning element 8.

During assembly, once the housing body 3 has been inserted into the seat opening 4, from the front face 14 of the door 2, the rod 27 can be inserted into the special retaining holes 26, across the housing body 3, as can be seen for example in Figures 2, 16, 17. By making the ends of the rod 27 engage in corresponding seating areas S1, S2 defined by the above-described overhanging portions 24, both rotation and translation of the housing 3 with respect to the positioning element 8.

Already in this configuration, therefore even before tightening the device by means of the screws 11, the device 1 is well constrained, ie a disengagement of the housing body 3 from the opening 4 in the seat is prevented. The operator, alone, can comfortably and autonomously tighten, by means of the screws 11, the housing body 3 on the door 2, positioning himself in proximity to the rear face 9 of the latter, without any risk that the housing body 3 can be expelled. previously.

The rod 27 and the threaded holes 28 are configured so that the screws 11, once screwed, press on the washer area 8 of the positioning element 8; in this way the rod 27 is stretched to move away from the rear surface of the door and then pulls the housing body 3 at the rear, tightening the front abutment portion 13 against the front surface 14 of the motorized door 2.

As already mentioned, the protection ring 18, the support-cylinder 15 and the housing body 3 are made of a high-strength tear-proof and anti-drill material to resist drilling attempts with a drill or, in general, break-in attempts with burglary. This high tear-resistant material, in particular, comprises a steel of the FE37 type subjected to a deep carbon-nitriding treatment with a surface hardness class of 60HRC and a treatment depth of 0.5 mm.

Through carbonitriding, the wear resistance and surface hardness of the aforementioned components are significantly increased.

During operation, under normal operating conditions of the engine M, the device 1 is in an inoperative, "stand-by" position, as shown in figures 4 to 7. In this case, the European profile cylinder C is in the "closed" position, and cannot be extracted from the housing body 3.

In the event of engine failure M or "black out", simply insert the key K and rotate the cylinder C, disengaging the ingot element 23 from the contrast plate 22. At this point, the cylinder-assembly 5 is released and free to be extracted from the housing body 3. By extracting the cylinder-group 5, it is possible to pull the cable 6 so as to act on the release member 7 to mechanically uncouple the motor M from the door 2 which at this point can be raised or lowered manually without the motor M opposing any resistance .

From the above it is evident that the release device 1 according to the invention has a high versatility and ease of use, improved characteristics of resistance to burglary, and considerable ease of assembly, as well as a structural configuration that does not require the need to be more than one mounting opening on the door 2.

The device 1 according to the invention is also constructively simple and economical to produce.

What has been said and shown with reference to the attached drawings has been given purely by way of example and illustrative of the general characteristics of the device, as well as of a preferential embodiment thereof; therefore other modifications and variations are possible, without thereby departing from the scope of the claims.

It is possible to configure and size the device 1 as desired according to the particular applications. Finally, the materials used can be chosen according to requirements as long as they are suitable for the specific use for which they are intended.

Claims (13)

CLAIMS 1. Release device for a motorized door (2), comprising: - a housing body (3) designed to be received and fixed in an opening (4) with a seat made on said motorized door (2), - a key cylinder unit (5), shaped to be removably received in said housing body (3), and to which a first end (E1) of a cable (6) is connected, able to be connected to a second end (E2), to a release member (7) of a motor (M) of said motorized door (2), - said key cylinder group (5) comprising a European profile cylinder (C) configured to enable / disable, by means of a key (K), an extraction of said cylinder-group (5) from said housing body (3), said extraction allowing, with a pulling action transmitted through said cable (6), to act on said release member (7) in order to mechanically decouple said motor (M) from said motorized door (2) and therefore allow the manual movement of said door (2), - a positioning element (8) adapted to be fixed on a rear face (9) of said motorized door (2) and shaped to couple with, and guide, said housing body (3) in a correct position (PM) of assembly, - retaining means (10) configured to couple with said housing body (3) and to cooperate with said positioning element (8) so as to retain said housing body (3) in said mounting position (PM) already preliminarily to a subsequent tightening step with screw elements (11), said holding means (10) preventing disengagement of said housing body (3) from said opening (4) to seat and allowing an operator to be able to carry out comfortably from only the tightening of said housing body (3) on said door (2) by means of said screw elements (11). 2. Release device according to claim 1, wherein said housing body (3) is made of a high-strength tear-proof and anti-drill material to resist drilling attempts or, in general, break-in attempts, and is equipped with: - a cylindrical portion (12) shaped to be received in said opening (4) with a seat formed in said motorized door (2), and - a front abutment portion (13) able to abut against a front face surface (14) of said motorized door (2). Release device according to claim 1 or 2, wherein said key cylinder-assembly (5) comprises: - a cylinder support (15) shaped to support, with fixing means (16), said European profile cylinder (C), a circular opening (17) being made in said cylinder support (15) for insertion of said key (K) in said European profile cylinder (C), said cylinder-support (15) being inserted into, and removable from, said housing body (3) from an external side of the motorized door (2), and - a protective ring (18) positioned in correspondence with said circular opening (17) and arranged to cover the front end of said European profile cylinder (C), a through slot being formed on said protective ring (18) (19) for the insertion of the key, said protective ring nut (18) being freely rotatable with respect to said cylinder support (15) and said European profile cylinder (C) to prevent drilling with a drill. 4. Release device according to claim 3, wherein said cylinder support (15) and said protective ring nut (18) are made of a high tear-resistant material to resist drilling attempts with a drill or, in general, attempts to burglary with burglary. 5. Device according to claim 3 or 4, wherein said cylinder-assembly (5) includes a pin element (20) made of hardened drill-resistant material, housed along a hole (21) which extends through said cylinder-support (15) transversely with respect to a longitudinal axis (L) of said European profile cylinder (C), said pin element (20) being arranged to further increase the resistance of the cylinder group (5) against drilling attempts with a drill. 6. Device according to one of claims 3 to 5, in which the external front surface of said protective ring (18) is substantially flush and coplanar with the external front surface of said support-cylinder (15), and the further surface external front of said cylinder support (15) substantially does not have stepped areas and cavities in the perimeter of interface with said front abutment portion (13) of said housing body (3), so as to oppose any attempt to grasp and tear aimed at breaking in. 7. Device according to one of the preceding claims, further comprising a contrast plate (22) fixed inside said housing body (3) and configured to interact with a key element (23) of said profile cylinder (C) European profile, so that in a closing position of the European profile cylinder (C) said contrast plate (22) is an obstacle to said ingenious element (23) to prevent and disable the extraction of said cylinder group (5 ) from said housing body (3), and so that in an opening position of the European profile cylinder (C) the extraction of said cylinder group (5) from said housing body (3) is enabled. 8. Device according to one of the preceding claims, in which said positioning element comprises a flat washer area (8) provided with projecting portions (24) which project backwards in a direction parallel to the longitudinal axis (L) of said housing body (3) so as to be, during assembly, arranged outside, and on opposite sides, of a rear part of the wall of said housing body (3), said positioning element (8) being fixable to the rear surface of said door (2) powered by screw means (25). Device according to one of the preceding claims, wherein said holding means comprise through holding holes (26) made on opposite areas of a rear wall region of said housing body (3), said holding means including a rod (27) shaped to be received in said retaining holes (26) so as to be arranged transversely with respect to the longitudinal axis (L) of said housing body (3). 10. Device according to claim 9, in which the ends of said rod (27) engage in corresponding seated areas (S1, S2) defined by respective pairs of cantilevered portions (24), so as to prevent both rotation and a translation of said housing body (3) with respect to said positioning element (8). 11. Device according to claim 9 or 10, in which threaded holes (28) are provided on the end areas of said rod (27), arranged to engage with said screw elements (11) which can be screwed to abut and insist on said element (8) positioning. 12. Device according to claim 11, when claim 9 depends on claim 8, in which said rod (27) and said threaded holes (28) are configured so that said screw elements (11), once screwed, press on the washer-like area (8) of said positioning element (8) and said rod (27) pulls said housing body (3) by tightening said front abutment portion (13) abutment against the front surface (14) of said door ( 2) motorized. 13. Device according to claim 2, or according to any one of claims 3 to 12 when dependent on claim 2, wherein said high tear-resistant material comprises a steel of the FE37 type subjected to a deep carbon-nitriding treatment with class of surface hardness 60HRC and treatment depth of 0.5 mm.