FR3084389A1 - DOOR EQUIPPED WITH A CYLINDER PROTECTOR - Google Patents

Abstract

The invention relates to a door comprising: a panel (3) having front and rear surfaces (5, 7), the front surface (5) having a cylinder protection orifice (19); a lock (25) housed in the panel (3), the lock (25) comprising a bolt (27), a cylinder (29) for driving the bolt (27), and a cylinder guard (31), the cylinder guard (31) comprising a tubular part (49) surrounding the cylinder (29) and a front part (51) closing one end of the tubular part (49) and covering the cylinder (29), the front part (51) being engaged in the cylinder guard hole (19); the cylinder protector (31) being made of a steel having undergone a corrosion protection treatment; the door (1) comprising an external plate (59) covering the cylinder protector (31), fixed to the front surface (5) of the door panel (3).

Description

Door fitted with a cylinder guard

The invention generally relates to doors fitted with cylinder guards.

Such doors are frequently mounted to close the exterior accesses of buildings. In this case, the cylinder guard must both be resistant to break-ins and resist corrosion. In addition, the door must have a neat finish.

In this context, the invention aims to propose a door making it possible to satisfy all of these criteria.

To this end, the invention relates to a door comprising: a door panel having front and rear surfaces substantially opposite to each other, the front surface having a cylinder guard orifice; a lock housed in the door panel, the lock comprising a bolt, a bolt drive cylinder, and a cylinder guard the cylinder guard comprising a tubular part surrounding the cylinder and a front part closing one end of the tubular part and covering the cylinder, the front part being engaged in the cylinder protection orifice; the cylinder guard being made of a steel having undergone a treatment for protection against corrosion; the door comprising an external plate covering the cylinder guard, fixed to the front surface of the door panel.

Because the cylinder guard is made of steel, it offers significant mechanical resistance and protects the cylinder from the lock effectively against external aggressions. The corrosion protection treatment allows the cylinder guard to withstand the weather. The outer plate gives the door a neat appearance. In particular, the outer plate hides the cylinder guard, which, due to the corrosion protection treatment, does not have an appearance that is sufficiently qualitative to be left visible.

The door can also represent one or more of the characteristics below, considered individually or in any technically possible combination:

- the steel constituting the cylinder protector is chosen from the following list: hardened steel, case-hardened steel, carbonitrided steel;

- the corrosion protection treatment is chosen from the following list: deltaflon, zinc plating, cataphoresis, copper plating, double copper plating, nickel plating, chrome plating, TIN treatment;

- The outer plate (59) is made of a material chosen from the following list: aluminum and its alloys, stainless steel and its alloys, copper and its alloys, thermoplastic, thermosetting material, zamak and its derivatives;

- The front part of the cylinder protector comprises a fixed part and a security pad with respect to the fixed part, the external plate comprising an orifice which leaves only the security pad exposed;

- the outer plate comprises a substantially flat area covering at least the front part of the cylinder protector and a raised edge extending around the flat area, the raised edge being in abutment against the front surface;

- The outer plate comprises a substantially planar area covering at least the front part of the cylinder guard and an erected edge extending around the planar area, at least one shim being interposed between the erected edge of the outer plate and the front surface Door.

Other characteristics and advantages of the invention will emerge from the detailed description which is given below, by way of indication and in no way limitative, with reference to the appended figures, among which:

- Figure 1 is a partial perspective view of a door according to the invention, the outer plate being shown separate from the door panel;

- Figure 2 is a sectional view of the door of Figure 1, taken according to the incidence of arrows II;

- Figure 3 is a view similar to that of Figure 1, showing the external plate assembled to the door panel.

The door 1 shown in Figures 1 to 3 is intended to close an opening of a building. It is more particularly intended to close an opening of a building leading to the outside.

The door 1 comprises a door panel 3 having the front and rear surfaces 5, 7 which are substantially opposite one another.

The front surface 5 is typically intended to be turned towards the outside of the building, and the rear surface 7 towards the inside of the building.

The door panel 3 is metallic. It typically comprises a front panel 9 and a rear panel 11 made of metal, substantially parallel and opposite one another. The front and rear panels 9, 11 respectively define the front and rear surfaces 5, 7.

The door panel 3 also has two longitudinal edges 13 and two transverse edges, not shown, connecting the front and rear panels to one another.

The longitudinal direction is intended to be oriented vertically once the door is mounted on the building. The transverse direction is then horizontal.

Only one of the two longitudinal edges 13 is visible in the figures.

The door panel 3 also comprises profiles 15 in Ω (FIG. 2), placed inside the door panel 3, between the front and rear panels 9, 11.

The Ω 15 profiles extend transversely. Front and back panels

9, 11 are rigidly fixed to the Ω profiles 15, which constitute reinforcements contributing to the rigidity of the door panel.

In the example shown, the door panel 3 also comprises a lining 17 pressed against an internal surface of the front panel 9. The lining 17 is pressed against an edge zone of the front panel 9, adjoining one of the two longitudinal edges 13 .

Advantageously the lining 17, the edge 13 and the rear panel 11 are parts of the same metal plate folded in C.

The front surface 5 has a cylinder protector orifice 19. This cylinder protector orifice 19 passes through the front panel 9 and the lining 17 and opens into the internal volume of the door panel 3.

The longitudinal edge 13 has, as can be seen in FIG. 1, a bolt hole 21 and a U-bolt hole 23.

The door 1 also has a lock 25, housed in the door panel 3.

The lock 25 comprises a bolt 27, a cylinder 29 for driving the bolt 27 and a cylinder guard 31.

The cylinder 29, in known manner, is designed to receive the key making it possible to lock and unlock the lock by moving the bolt 27. It includes a key recognition mechanism, configured to detect whether the key inserted into the cylinder 29 is coded for the lock. The cylinder 29 also has a mechanism configured to move the bolt 27 relative to the door panel 3, by rotation of the key inside the cylinder 29, when the key recognition mechanism indicates that the key has a coding corresponding to that of the lock.

The cylinder drive mechanism 29 moves the bolt 27 by means of a kinematic chain 33, visible in FIG. 2, housed in a lock box 35.

The lock box 35 is rigidly fixed inside the door panel 3. It has upper and lower faces 37, 39 facing respectively towards the front panel 9 and towards the rear panel 11. The slot for receiving the key of the cylinder 29 is substantially perpendicular to the front face 37. Thus, the central axis X of the cylinder 29 is also perpendicular to the front face 37, and perpendicular to the front and rear panels 9,11.

The cylinder 29 housed entirely inside the door panel 3.

The cylinder 29 thus has a central part 41 located in the lock box 35, and a front axial end 43 ..

The lock 25 comprises a latch bolt 45, and a mechanism not shown making it possible to drive the latch bolt 45 using a handle 47. The latch bolt is engaged in the half bolt hole - tower 23.

The cylinder protector 31 comprises a tubular part 49 surrounding the cylinder 29, and a front part 51 closing one end of the tubular part 49.

The tubular part 49 extends over the entire periphery of the cylinder 29. It is coaxial with the axis X and extends axially substantially over the entire height of the cylinder 29. It is supported on the lock box 35.

The front part 51 has a general shape of a disc. It closes an axial end of the tubular portion 49 opposite the lock box. It is engaged in the cylinder guard hole 19.

In the example shown, the front part 51 has, perpendicular to the axis X, a circular section, substantially conjugate with the section of the cylinder guard orifice 19.

As a variant, it has a rectangular section or any other section.

The cylinder protector 31 is provided to protect the cylinder 29 from external aggressions. It is a shielding piece preventing a possible burglar from gaining access to the cylinder.

The front part 51 covers the cylinder 29.

As can be seen in particular in FIG. 1, the front part 51 of the cylinder guard has a fixed part 53 and a safety pad 55 which is rotatable relative to the fixed part 53.

The security pad 55 is substantially cylindrical and coaxial with the axis X. It is placed axially immediately above the front end 43 of the cylinder 29.

The security pad 55 is housed in an orifice of corresponding shape, formed in the fixed part 53.

The security pad 55 is rotatable around the axis X relative to the fixed part 53.

It has a slot 57, aligned with the not shown slot provided for receiving the key inside the cylinder 29. Once the key introduced into the cylinder 29 through the slot 57, the key can rotate around the X axis both the safety pad 55 of the cylinder guard and the rotating part of the cylinder 29.

The door 1 also comprises an external plate 59, covering the cylinder protector 31 and fixed to the front surface 5 of the door panel 3.

The external plate 59 comprises an orifice 61 placed opposite the security pad 55 of the cylinder guard.

The orifice 61 has a cross section of size and shape substantially identical to that of the security pad 55.

Thus, the orifice 61 leaves uncovered only the safety pad 55. In other words, the orifice 61 covers only the safety pad 55. The fixed part 53 of the cylinder guard is entirely masked by the external plate 59 It is not apparent. It is not exposed to the weather.

Typically, the orifice 61 has a diameter substantially equal to the diameter of the security pad 55.

The outer plate 59 has a substantially planar area 63, and a raised edge 65 extending around the planar area 63 and projecting towards the front surface 5 from the planar area 63

The flat area 63 has a surface which is clearly larger than that of the front part 51 of the cylinder guard. It is slightly wider transversely than the front part 51. Longitudinally, it is much longer than the front part 51.

The flat area 63 thus covers the entire front part 51 of the cylinder guard, with the exception of the security pad 55.

The raised edge 65 is typically pressed against the front surface 5 of the door panel.

The outer plate 63 is rigidly fixed to the door panel 3 by screws, not shown, passing through holes 67 made in the outer plate 59. The threaded parts of the screws are screwed into holes 69 made in the door panel 3.

Thus, the plate 59 and the front surface 5 of the door panel 3 together define a closed volume, in which is housed the front part 51 of the cylinder protector. This volume is completely isolated from its environment and communicates with the outside only through port 61.

In order to offer significant mechanical resistance, the cylinder guard 31 is made of steel. The steel constituting the cylinder guard is chosen from the following list: hardened steel, case-hardened steel, carbonitrided steel. For example, the steel is of the 100c6, or Z160cdv12, or 42CrMo4, or 40cmd8, or 58crv4, or even Z200c12 type.

In order to withstand the weather, the selected steel has undergone a corrosion protection treatment.

This corrosion protection treatment is advantageously chosen from the following list: deltaflon, zinc plating, cataphoresis, copper plating, double copper plating, nickel plating, chrome plating, TIN treatment.

The outer plate 59 is made of a material chosen from the following list: aluminum and its alloys, stainless steel and its alloys, copper and its alloys, thermoplastic, thermosetting material, zamak and its derivatives.

Such a material offers good weather resistance. In addition, it has an attractive appearance for the user, and ensures a good finish for the door.

Typically, all of the cylinder guard 31 is made of the above material. In any event, at least the front part 51 of the cylinder guard 31 is made of the above material.

Typically, the entire cylinder guard 31 undergoes the corrosion protection treatment mentioned above.

In any event, at least the front part 51 of the cylinder guard undergoes the corrosion protection treatment mentioned above. This treatment is preferably applied to the surfaces of the front part situated outside the orifice 19, in particular the free face 71 and the circumferential edge 73 surrounding the free face 71.

In order to simplify the management of stocks and the manufacture of the door, all the doors according to the invention have the same thickness, taken between the front and rear surfaces 5, 7. Similarly, the bolt holes 21 and half bolt - tower 23 are always in the same position. The distance between the front face 37 of the lock box 35 and the front panel 9 is always the same, for all the doors according to the invention.

However, it is planned to mount several types of cylinder 29 on the door 3, axially having different heights.

It follows that the front part 51 of the cylinder guard, depending on the type of cylinder used, projects at a different height relative to the front surface 5, this height is depending on the type of cylinder used.

The height of the raised edge 65 is chosen so that the external plate 59 can be used over a large part of the range of cylinders 29. For cylinders 29 of great heights, for which the front part 51 of the cylinder guard protruding over a height greater than the height of the raised edge 65, it is planned to use shims. These shims are interposed between the raised edge 65 and the front surface 5 of the door 3.

Claims (7)

1. - Door (1) comprising: - A door panel (3) having front and rear surfaces (5, 7) substantially opposite to each other, the front surface (5) having a cylinder protector orifice (19); - a lock (25) housed in the door panel (3), the lock (25) comprising a bolt (27), a cylinder (29) for driving the bolt (27), and a cylinder protector (31), the cylinder protector (31) comprising a tubular part (49) surrounding the cylinder (29) and a front part (51) closing one end of the tubular part (49) and covering the cylinder (29), the front part (51) being engaged in the cylinder protector orifice (19); the cylinder protector (31) being made of a steel which has undergone a corrosion protection treatment; the door (1) comprising an external plate (59) covering the cylinder protector (31), fixed to the front surface (5) of the door panel (3). 2. - Door according to claim 1, in which the steel constituting the cylinder protector (31) is chosen from the following list: hardened steel, case-hardened steel, carbonitrided steel. 3. - Door according to claim 1 or 2, wherein the corrosion protection treatment is chosen from the following list: deltaflon, zinc plating, cataphoresis, copper plating, double copper plating, nickel plating, chrome plating, TIN treatment. 4. - Door according to any one of claims 1 to 3, in which the outer plate (59) is made of a material chosen from the following list: aluminum and its alloys, stainless steel and its alloys, copper and its alloys, thermoplastic , thermosetting material, zamak and its derivatives. 5. - Door according to any one of the preceding claims, in which the front part (51) of the cylinder protector (31) comprises a fixed part (53) and a safety pad (55) relative to the fixed part (53 ), the outer plate (59) comprising an orifice (61) which leaves only the safety pad (55) exposed. 6. - Door according to any one of the preceding claims, in which the external plate (59) comprises a zone (63) substantially planar covering at least the front part (51) of the cylinder guard (31) and an erected edge (65 ) extending around the flat area (63), the raised edge (65) being in abutment against the front surface (5). 7, - Door according to any one of claims 1 to 5, wherein the plate 5 external (59) comprises a substantially planar area (63) covering at least the front portion (51) of the cylinder guard (31) and a raised edge (65) extending around the planar area (63), at least a wedge being interposed between the raised edge (65) of the external plate (59) and the front surface (5) of the door (3).