Door handle

Abstract

The present invention relates to a handle for doors and windows, and more particularly to a door handle with automatic return to the rest position. [Fig 1]

Description

Title of the invention: Door handle

[0001] The present invention relates to a handle for doors and windows, and more particularly to a door handle with an automatic return to the rest position.

[0002] As is well known, door handles are movable by rotation between a rest position, which corresponds to the locking pawl being extended (door closed), and a working position, which corresponds to the locking pawl being retracted (door open). The rotation of the handle between these two positions actuates the locking mechanism by moving the pawl between an extended position, in which it is oriented to engage with a corresponding seat on the fixed frame, and a retracted position, in which the pawl is retracted into the door lock and thus is not engaged with the corresponding seat.

[0003] Known handles usually have an internal return mechanism to the rest position, which of course makes them easier to use. This return mechanism is usually achieved using a spring.

[0004] Normally, this type of handle requires a large base to contain the spring mechanism and the screws anchoring it to the door.

[0005] The object of the invention is to obtain a handle which is more compact than those which are known and in particular which does not require a base.

[0006] These objects, as well as others, are reached by a handle adapted to be mounted operationally on a door, said handle being movable between a rest position and a working position, in which the rotational movement of said handle between said rest position and said working position achieves the opening / closing of said door, said handle comprising a gripping part and a main body arranged in continuity with the gripping part and along its own longitudinal axis of rotation, said main body defining a housing for the following elements arranged in longitudinal sequence: a base for anchoring the handle to the door frame, having at least means for anchoring said handle to said frame and a central longitudinal through hole, said base being inserted, in a rotatable manner, inside said housing of said main body; a first socket connected, in a permanent manner, to the base and having a through hole arranged coaxially with said hole of said base; a sleeve with a longitudinally coaxial through hole relative to said hole in said base and relative to said hole in said first socket, said sleeve being traversed along said hole by a spindle for operating a lock of said door, said sleeve being integral with said housing; in which means which are contained within said casing for the automatic return of said handle to the rest position are actuated by the mutual rotation between said main body and said base.

[0007] Other characteristics are defined below:

[0008] Advantageously, said means for automatic return to the rest position include a spring.

[0009] Advantageously, said spring is a spiral torsion spring type spring.

[0010] Advantageously, said spring is mounted around said sleeve.

[0011] Advantageously, said spring comprises a first and a second appendage, said first appendage being engaged with said base, said second appendage being engaged with said main body.

[0012] Advantageously, said spring is mounted in a pre-loaded manner in said rest condition of said handle.

[0013] Advantageously, said base includes a first projection projecting along said longitudinal axis.

[0014] Advantageously, said main body includes a second projection projecting from a side wall of said housing towards its interior.

[0015] Advantageously, said first appendage engages with said first projection and said second appendage engages with said second projection.

[0016] Advantageously, the handle comprises a first protrusion of said socket and said at least one protrusion of said housing at a given circumferential distance, said first protrusion and said at least one protrusion coming against each other, when said handle is in a working position.

[0017] Advantageously, said housing comprises a front part and a rear part located furthest inside relative to said main body, said operating pin being at least partially housed inside said rear part.

[0018] The characteristics and advantages of the handle according to the present invention will become clearer from the following description of its embodiment, proposed by way of non-limiting example with reference to the accompanying drawings, in which: [Fig.1] [Fig.1] is a cross-sectional view of the handle according to the invention; [Fig.2] [Fig.2] is an exploded view of the handle of [Fig.1]; [Fig. 3] [Fig. 3] is a cross-sectional view of the handle in a resting condition; and [Fig.4] [Fig.4] is a cross-sectional view of the handle in a working condition.

[0019] As shown in the figures, the handle 1 consists of a gripping part 10 which is intended to be grasped by a user to move the handle, when opening or closing a door P to which the handle is connected, in an operational manner.

[0020] The handle is rotatable between a rest position, which corresponds to the locking pawl being extended (door closed), and a working position, which corresponds to the locking pawl being retracted (door open). Rotating the handle between these two positions actuates the locking mechanism by moving the pawl between an extended position, in which it is engaged with a corresponding seat on the fixed frame, and a retracted position, in which the pawl is retracted inside the door lock and is therefore not engaged with the corresponding seat.

[0021] The handle further comprises a body 11 arranged in continuity with the gripping part 10 in an arrangement curved relative to the latter.

[0022] In particular, the body 11 of the handle is considered to be arranged along its own longitudinal axis X', which, in use, can be arranged parallel to the ground or perpendicular to the plane defined by the door. The handle can rotate about this longitudinal axis X'.

[0023] The body 11 defines a housing 2 for a group of elements for anchoring the handle to the door frame and a group of elements for operating the mechanism to open and / or close the door itself. The housing 2 has a front portion 20 adapted to face the door and to contain at least the elements to be fixed to the door, and a rear portion 21, arranged further back towards the interior of the body 11, adapted to house at least the operating elements.

[0024] The group of elements for anchoring the handle 1 to the door includes an anchoring base 3, which has means for anchoring the handle to the door. These anchoring means include, for example, through holes 31 for screws 32 to be fixed to the door profile F.

[0025] The holes 31 are arranged along their own longitudinal axis X'.

[0026] For this purpose, corresponding holes 320 are provided for inserting the screws 32.

[0027] The anchoring base 3 is shaped so that it can be positioned inside the housing 2, and in particular the front portion 20, in rotation. Preferably, but not limited to, the anchoring base 3 has a substantially cylindrical shape and extends around its own longitudinal axis X'. The anchoring base 3 also has a central longitudinal through hole 30.

[0028] Inside the hole 30, a first socket 4 is inserted, preferably, but not limited to, made of a plastic material. The first socket 4 has a central through hole 40 which is arranged coaxially with the central hole 30 of the base 3.

[0029] Furthermore, inside the central hole 40 of the first socket 4, a sleeve 5 is inserted having a frustoconical part with a circular cross-section 51 adapted to rotate inside the first socket 4; the sleeve further includes a substantially square rod 52 for connection with the rear part 21 of the housing 2 and an enlarged head 53 adapted to come abut through the first socket 4 on the base 3.

[0030] The sleeve 5 also has a central through hole 54 which is arranged coaxially with the through holes 30 and 40, defining a seat 60. An operating pin 6 of the lock passes through the seat 60.

[0031] The operating pin 6 is mounted in a non-rotating manner in the central through hole 54 of the sleeve 5, so that the rotation of the handle causes the rotation of the operating pin and, at the same time, the movement of the lock.

[0032] In addition, a transverse hole 70 is formed in the handle body and the sleeve to insert a setting screw 7 in order to lock the mutual position between the gripping part, the sleeve and the operating pin.

[0033] The operating pin 6, which is inserted into the sleeve, penetrates it, extending into the main body of the handle, affecting at least partially the rear part 21 of the housing 2.

[0034] The handle further includes a second socket 8 preferably, but not limited to, made of a suitable plastic material to couple to the inner wall of the front part 20 of the housing 2; the second socket 8 engages with the group formed by the base 3, the first socket 4 and the sleeve 5.

[0035] According to another aspect of the handle according to the invention, it includes spring-loaded return means arranged inside the housing 2.

[0036] The spring return means include a spring 9. In a preferred solution, the spring 9 is of the spiral torsion spring type.

[0037] The spring 9 is housed inside the casing 2 around the sleeve 5.

[0038] The base 3 includes a first projection 33 projecting along its own longitudinal axis X'.

[0039] Inside the housing 2 and in particular inside the front part 20 of the housing, a second projection 201 is formed which projects from the side wall of the front part of the housing 2 towards the inside of the housing.

[0040] The first projection 33 and the second projection 201 are aligned with each other in the rest condition of the handle, while rotation of the handle results in the two projections moving away from each other on a circumferential arc (figures 3 and 4).

[0041] The spring 9 comprises two appendages, a first appendage 90 which engages with the first projection 33 and a second appendage 91 which engages with the second projection 201.

[0042] The spring 9, in the handle rest condition, is mounted in preload with the appendages at the level of their respective projections.

[0043] When the gripping part of the handle is rotated, the second projection 201 rotates, dragging the second appendage 91 of the spring 9. When the handle is released, the spring returns the handle to the rest position.

[0044] If necessary, it is possible to provide a limit to the stroke of the rotating handle; in one embodiment, this limit is given by a first protrusion 34 formed on the sleeve 3 which comes to rest on a second protrusion 202 formed inside the housing 2, at a circumferential distance determined according to the rotation stroke to be given to the handle.

[0045] The handle may also include a third protrusion 203 further projecting from the inner wall of the housing 2 in a position substantially diametrically opposite to the second protrusion 202.

[0046] In the case where the handle has a rotation opposite to that described above, the third protrusion 203 will come to rest on the first 34.

[0047] The configuration described above is therefore applicable to both left-hand and right-hand rotation, without distinction. The handle can, therefore, be applied to left-hand or right-hand opening doors.

[0048] As can be seen from the description above, the handle achieves its intended purpose by being compact and structurally simple. In fact, the handle has no additional base but contains the entire door opening mechanism within the main body.

[0049] Furthermore, thanks to the arrangement of its parts, it is possible to utilize the entire housing inside the body, even the rear portion, to insert the operating pin. This allows the handle to be installed with operating pins of varying lengths.

[0050] The present invention has been described herein with reference to its preferred embodiments. It is anticipated that there may be other embodiments relating to the same subject matter of the invention, all falling within the scope of protection of the claims indicated below.

Claims

Demands

1. Handle adapted for operational mounting on a door, said handle is movable between a rest position and a working position, in which the rotational movement of said handle between said rest position and said working position achieves the opening / closing of said door, said handle comprising a gripping part (10) and a main body (11) arranged in continuity with the gripping part (10) and along its own longitudinal axis of rotation (X'), said main body (11) defining a housing (2) for the following elements arranged in longitudinal sequence: a base (3) for anchoring the handle to the door frame, having at least means for anchoring said handle to said frame and a central longitudinal through hole (30), said base being inserted, in a rotational manner, inside said housing (2) of said main body;a first socket (4) permanently connected to the base (3) and having a through hole (40) arranged coaxially with said hole (30) of said base (3); a sleeve (5) with a longitudinal through hole (54) coaxial with said hole (30) of said base (3) and with said hole (40) of said first socket (4), said sleeve being traversed along said hole (54) by an operating pin (6) of a lock of said door, said sleeve being integral with said housing; in which means are contained within said housing for the automatic return of said handle to the rest position, and are actuated by the mutual rotation between said main body (11) and said base (3).

2. Handle according to claim 1, wherein said means for automatic return to the rest position comprise a spring (9).

3. Handle according to claim 2, wherein said spring is a spiral torsion spring type spring.

4. Handle according to claim 2 or 3, wherein said spring is mounted around said sleeve.

5. Handle according to any one of claims 2 to 4, wherein said spring comprises a first (90) and a second (91) appendage, said first appendage being engaged with said base (3), said second appendage being engaged with said main body (11).

6. Handle according to claim 5, wherein said spring is mounted in a preloaded manner in said rest condition of said handle.

7. Handle according to any one of claims 2 to 6, wherein said base (3) comprises a first projection (33) projecting along said longitudinal axis (X').

8. Handle according to claim 7, wherein said main body (11) comprises a second projection (201) projecting from a side wall of said housing into its interior.

9. Handle according to claim 8, wherein said first appendage (90) engages with said first projection (33) and said second appendage (91) engages with said second projection (201).

10. Handle according to the preceding claim, comprising a first protrusion (34) of said socket (4) and at least one protrusion (202, 203) of said housing (2) at a given circumferential distance, said first protrusion (34) and said at least one protrusion (202, 203) abutting each other, when said handle is in a working position.

11. Handle according to any one of the preceding claims, wherein said housing comprises a front portion (20) and a rear portion (21) located furthest inside relative to said main body, said operating pin being at least partially housed inside said rear portion (21).