Locking rod for cremone bolt window frames

Abstract

Assembly comprising at least one profile (1) of a casement (T) of a cremone bolt window frame comprising a longitudinal channel (10) having a C-shaped cross-section with two undercuts under a first longitudinal edge (13a) and a second longitudinal edge (13b) of the profile (1); and at least one locking rod (100) arranged in the longitudinal channel (10) of said at least one profile (1); said locking rod (100) comprising a body (2) and at least one cover (3) removably coupled with the body (2).

Description

[0001] LOCKING ROD FOR CREMONE BOLT WINDOW FRAMES

[0002] DESCRIPTION

[0003] The present patent application for industrial invention relates to a locking rod for cremone bolt window frames.

[0004] The field of reference is that of window frames, and particularly the assembly of casements that are obtained by connecting profiles in the form of a frame.

[0005] The profiles of the prior art that are used in the construction of a cremone bolt window frame are usually provided with a longitudinal channel with C-shaped cross-section that defines two undercut portions. Specifically, the longitudinal channels of such profiles are defined by a base wall, two side walls projecting from the base wall, and two opposite longitudinal edges projecting perpendicularly from the side walls and facing each other. The longitudinal edges define a longitudinal opening with width smaller than the distance between the side walls of the profile, so that, in cross section, the longitudinal channel of the profile has a C-shaped profile with two undercut portions under the longitudinal edges.

[0006] The longitudinal channel of each profile is opened at both ends by respective axial openings. In view of the above, the longitudinal channel of the profile can be accessed from the axial openings and from the longitudinal opening defined by the two longitudinal edges.

[0007] In the field of window frames, locking and opening assemblies with cremone bolt are known, which comprise a handle connected to two locking rods that are slidingly inserted in the longitudinal channels of the profiles of the casement of the window frame.

[0008] Such a handle comprises a sprocket-rack mechanism. The sprocket is connected to a handle. The rack is connected to the locking rods that slide in the longitudinal channels of the casement profiles. Thus, a rotary motion of the handle results in a simultaneous translation of the locking rods housed in the longitudinal channel of the profile in opposite direction.Therefore, the locking rods are shaped and dimensioned in such a way to slide in the longitudinal channels of the profiles.

[0009] In the case when the locking rods have a width greater than the width of the longitudinal opening of the profiles, the locking rods must be inserted axially in the longitudinal channels of the profiles, that is to say, the locking rods must be inserted through the axial openings of the profiles.

[0010] If the casement is already assembled, consecutive profiles are connected to each other in correspondence of the casement comers and, as a result, the axial openings of the profiles are obstructed. Therefore, in order to insert the locking rods into the longitudinal channels of the profiles, notches need to be made at the casement comers in such a way to provide access to the axial openings of the profiles.

[0011] Obviously, such a procedure is arduous and complicated, and requires the use of specialized labor and special tools to make the notches, which, moreover, may affect the aesthetics of the window casement.

[0012] Conversely, the locking rods that have a lower width than the longitudinal opening of the profiles can be also used when the two profiles to be connected have already been installed and therefore their axial openings are not accessible.

[0013] In such a case, the locking rods are inserted in the longitudinal channels of the profiles according to a direction orthogonal to the longitudinal axis of the profiles.

[0014] DE2217458A1 describes an assembly for cremone bolt window frames according to the preamble of claim 1.

[0015] LIS2018010371 describes a corner deflection means of a fitting for a window casement or a door leaf.

[0016] DE19859587A describes a slide rod for window locking.

[0017] EP2754803A2 describes an espagnolette fitting for a window or door. Locking rods with flexible longitudinal lateral edges suitable for being snap-fitted into the longitudinal edges of the profile are known. In this way, the locking rod is inserted in the longitudinal channel of the profile according to a direction orthogonal to the longitudinal axis of the profile, so that the lateraledges of the locking rod are elastically bent and snap under the longitudinal edges of the profile.

[0018] Such a type of locking rod is made in one piece and is impaired by several drawbacks.

[0019] In fact, such type of rod is difficult to make because the flexible longitudinal edges of the rod are obtained by means of a complex co-molding process.

[0020] In addition, such type of rod is not adaptable to different sizes of the longitudinal channels of the profiles and, therefore, it must be made ad hoc for the respective profiles, as its dimensions are closely related to the dimensions of the longitudinal channel of the profile.

[0021] Therefore, the use of such locking rods requires to keep a stock of locking rods of different sizes for profiles provided with longitudinal channels of various widths, resulting in high costs in terms of stock management.

[0022] The purpose of the present invention is to overcome the drawbacks of the prior art by providing a locking rod for cremone bolt window frames that is versatile and installable in any window casement, without being strictly constrained to the dimensions of the longitudinal channel wherein it is to be inserted.

[0023] A further purpose is to provide a locking rod for cremone bolt window frames that is inexpensive, simple and quick to make, and easy to install.

[0024] These purposes are achieved in accordance with the invention with the features listed in the attached independent claim 1.

[0025] Advantageous embodiments appear from the dependent claims.

[0026] For explanatory clarity, the description of the locking rod according to the invention continues with reference to the attached drawings, which are for illustrative and non-limiting purposes only, wherein:

[0027] Fig. 1 is a perspective view illustrating a portion of a casement of a cremone bolt window frame suitable for accommodating the locking rods according to the invention;

[0028] Fig. 2 is a cross-sectional view of a profile of the window casement of Fig. 1 , taken along the sectional plane ll-ll of Fig. 1 ;Fig. 3 is an exploded perspective view illustrating the locking rod according to the invention;

[0029] Fig. 4 is a cross-sectional view of the locking rod of Fig. 3, taken along the sectional plane IV- IV of Fig. 3;

[0030] Fig. 5 is a cross-sectional view of the locking rod according to the invention, in assembled condition;

[0031] Figs. 6 and 7 are cross-sectional view illustrating the insertion of the locking rod according to the invention in a longitudinal channel of a profile.

[0032] With reference to the attached Figures, the locking rod according to the invention is described, which is generally indicated with reference numeral 100.

[0033] Fig. 1 illustrates a portion of a casement (T) for a cremone bolt window frame.

[0034] Said casement (T) comprises profiles (1 ) connected to each other at the comers (S) of the casement (T), in such a way that said profiles (1) originate a rectangular frame suitable for supporting a transparent panel. The connection of the profiles is known and, therefore, not illustrated herein in detail.

[0035] A handle (M) of cremone bolt type is mounted in the casement (T). The handle (M) has a mechanism connected to a handgrip (M1) of the handle and to two locking rods (100) suitable for being inserted in a profile (1 ) of the frame, so that a rotation of the handgrip (M1) of the handle causes a simultaneous translation of the two locking rods (100) in opposite directions.

[0036] Referring to Fig. 2, each profile (1) comprises a longitudinal channel (10) defined by a bottom wall (11 ), two side walls (12) orthogonal to the bottom wall (11), and two opposite longitudinal edges (13a, 13b) projecting orthogonally from the side walls (12) in parallel direction to the bottom wall (11).

[0037] In particular, each profile (1) comprises a first longitudinal edge (13a) and a second longitudinal edge (13b) that define a longitudinal opening (14) having a smaller width than the distance between the side walls (12), so that the longitudinal channel (10) has a C-shaped cross-section with two undercuts under the longitudinal edges (13a, 13b) of the profile.With particular reference to Figs. 3-5, the locking rod (100) according to the invention comprises a body (2) and at least one cover (3) that is removably coupled with the body (2).

[0038] The body (2) of the locking rod (100) has a plate-like shape and is made of a metal material. The body (2) comprises a first longitudinal side edge (20a) and a second longitudinal side edge (20b), parallel to each other. The body (2) has a lower surface (21) suitable for facing the bottom wall (11) of the profile (1), and an upper surface (22) suitable for facing the longitudinal opening (14) of the profile (1).

[0039] A longitudinal shelf (23) protrudes laterally from the first longitudinal side edge (20a) of the body, in correspondence with the upper surface (22) of the body, orthogonally to said longitudinal side edge (20a) of the body.

[0040] A longitudinal tenon (24) protrudes laterally from the second longitudinal lateral edge (20b) of the body, in correspondence with the lower surface (21) of the body.

[0041] The body (2) has at least one slot (25) formed in the first longitudinal lateral edge (20a) of the body. The slot (25) has a U-shaped profile and is defined by two transverse edges (25a), parallel to each other, and by a longitudinal edge (25b) substantially formed at the centerline of the body (2) to connect the two transverse edges (25a). A tooth (4) advantageously provided with an arcuate, substantially L-shaped profile protrudes from the longitudinal edge (25b) of the slot (25) of the body of the locking rod (100) in upward direction toward the first longitudinal edge (20a) of the body of the locking rod (100).

[0042] The cover (3) of the locking rod (100) is made of a plastic material. The cover (3) has a seat (30) suitable for accommodating the tooth (4). In this way, the tooth (4) can be inserted in the seat (30) of the cover (3), that is to say, the cover (3) is removably coupled with the tooth (4) of the body of the locking rod (100), in female-male coupling mode.

[0043] Moreover, the cover (3) comprises a flexible wing (31) that protrudes externally from the seat (30) of the cover. The flexible wing (31) of the cover has a V-shaped cross section with a rounded vertex (32).With reference to Fig. 5, when the cover (3) is coupled with the tooth (4), the flexible wing (31) of the cover (3) is arranged under the tooth (4) and the rounded vertex (32) of the flexible wing is arranged under the lower surface (21) of the body of the locking rod (100), basically at the same height as the lower surface of the longitudinal tenon (24) of the body of the locking rod (100).

[0044] With reference to Figs. 6 and 7, when the cover (3) is coupled with the tooth (4) of the body (2) of the locking rod (100), the locking rod (100) can be inserted in the longitudinal channel (10) of the profile (1) according to a direction transverse to the longitudinal axis of the body (2) of the locking rod, so that the longitudinal tenon (24) of the body (2) is positioned under the second longitudinal edge (13b) of the profile. At this point, the locking rod (100) is oscillated inward into the longitudinal channel (10) of the profile, bringing the flexible wing (31 ) of the cover into contact with the first longitudinal edge (13a) of the profile. As a result, the flexible wing (31) of the cover bends elastically until it overrides the first longitudinal edge (13a) of the profile and snaps under the first longitudinal edge (13a) of the profile, and the longitudinal shelf (23) of the body of the locking rod abuts above the first longitudinal edge (13a) of the profile.

[0045] Numerous variations and modifications can be made to the present embodiment of the invention, which are within the reach of an expert of the field, falling in any case within the scope of the invention as expressed by the appended claims.

Claims

CLAIMS1. Assembly comprising:- at least one profile (1) of a casement (T) of a cremone bolt window frame comprising a longitudinal channel (10) having a C-shaped cross-section with two undercuts under a first longitudinal edge (13a) and a second longitudinal edge (13b) of the profile (1); and- at least one locking rod (100) arranged in the longitudinal channel (10) of said at least one profile (1 );said locking rod (100) comprising a body (2) and at least one cover (3) removably coupled with the body (2);wherein said body (2) of said locking rod (100) comprises:- a first longitudinal lateral edge (20a) and a second longitudinal lateral edge (20b), parallel to each other;- a longitudinal shelf (23) protruding laterally from the first longitudinal lateral edge (20a) of the body and suitable for abutting above the first longitudinal edge (13a) of the profile; and- a longitudinal tenon (24) projecting laterally from the second longitudinal lateral edge (20b) of the body and suitable for being arranged under the second longitudinal edge (13b) of the profile;characterized in thatsaid body (2) of said locking rod (100) further comprises at least one tooth (4) protruding from the body (2) of the locking rod, in upward direction toward the first longitudinal lateral edge (20a) of the body of the locking rod (100); andsaid cover (3) of said at least one locking rod (100) comprises:- a seat (30) suitable for accommodating the tooth (4) of said body (2); and- a flexible wing (31 ) protruding outwardly from the seat (30) of the cover in such a way that, when the cover (3) is coupled with the tooth (4) of the body (2), the flexible wing (31) of the cover (3) is disposed under the tooth (4) andthe longitudinal shelf (23) of the body (2) to engage the first longitudinal edge (13a) of the profile.

2. The assembly according to claim 1 , wherein the body (2) of the locking rod (100) comprises at least one slot (25) formed in the first longitudinal lateral edge (20a) of the body; said slot (25) being defined by at least one transverse edge (25a, 25b) and said tooth (4) protruding from said at least one transverse edge (25a, 25b) defining the slot (25).

3. The assembly according to claim 2, wherein said at least one slot (25) has a U-shaped profile and is defined by two transverse edges (25a), parallel to each other, and by a longitudinal edge (25b) formed at a centerline of the body (2) of the locking rod (100) to connect the two transverse edges (25a); said at least one tooth (4) of the body (2) of the locking rod protrudes from said longitudinal edge (25b) defining the slot (25).

4. The assembly according to any one of the preceding claims, wherein said flexible wing (31 ) of the cover (3) of the locking rod (100) has a V-shaped cross-section with a rounded vertex (32).

5. The assembly according to any one of the preceding claims, wherein said at least one cover (3) of the locking rod (100) is made of a plastic material.

6. The assembly according to any one of the preceding claims, wherein said body (2) of the locking rod (100) has a plate-like shape and is made of a metal material.

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