Espagnolette handle with cremone bolt for door and window fixtures

Abstract

A handle (M) for door and window fixtures comprises a box (2), a handle piece (1), two blocks (8, 9) connected to respective operating rods (A1, A2) slidingly mounted on the post (L) of the leaf to close the leaf, and an operating mechanism (7) connected to the handle piece (1) and to the blocks (8, 9) so that a rotation of the handle piece (1) causes a translation of the operating rods (A1, A2) in opposite direction; the operating mechanism (7) comprises a toothed wheel (3), a first lever (4) and a second lever (5) provided with respective toothed sectors (41a, 41b) that are engaged in the toothed wheel (3).

Description

[0001] The present invention relates to an espagnolette handle with cremone bolt for door and window fixtures.

[0002] A window or door fixture consists of a leaf that opens and closes an opening defined by a frame installed in a wall. Therefore, the fixture may comprise a door, a window, or a French window.

[0003] Generally, a window or French window fixture has an opening and closing system based on the use of two operating rods that slide along one of the posts of the leaf. The operating rods are suitable for being alternately disposed in an extracted closing position and in a retracted opening position due to the action of a suitable mechanism controlled by a rotating handle.

[0004] In the extracted closing position of the fixture, the two rods protrude with respect to the upper and lower end of the post of the leaf to fit into appropriate holes provided in the frame of the fixture.

[0005] In the retracted opening position of the fixture, the two sliding rods assume a retracted position with respect to the ends of the post of the leaf in such a way that they can be released from the holes of the frame to let the user rotate the window or French window freely.

[0006] Two main types of handles are currently available to operate such fixtures, namely the so-called espagnolette handle with cremone bolt and the casement handle with cockspur.

[0007] Fig. 6 shows a typical espagnolette handle in which the rotations of the handle (100) are transmitted to a toothed wheel (101) located between two racks (102) arranged with axes parallel to the post of the leaf.

[0008] In this way, the rotations of the toothed wheel (101) in either direction cause the racks (102) to slide alternately from a side-by-side position to a staggered position achieved as a result of the upward sliding of the first rack and of a simultaneous downward sliding of the second rack.

[0009] The two racks (102) support respective lugs (102a) to which the sliding rods used for opening and closing the leaf are fixed. In this way, the two sliding rods of the leaf are disposed in the retracted opening position when the handle is turned clockwise, whereas they are disposed in the extracted closing position when the handle is turned counterclockwise.

[0010] A similar opening / closing mechanism of a door / window fixture that is based on the use of an espagnolette handle is very efficient and reliable, but has the disadvantage of being rather bulky.

[0011] In fact, the handle piece (100) of the handle is engaged in a box (103) fixed on the post of the leaf. The box (103) must be suitably dimensioned to contain the two racks (102) and the toothed wheel (101). The large size of the box (103) is perceived as an unpleasant feature of the handle.

[0012] The casement handle is specifically designed for fixtures made of tubular profiles. In such a case, the handle operates a square pin that is inserted into a slot provided on the post of the leaf in order to operate a pinion and rack mechanism housed inside the post. The pinion-rack mechanism provides the alternate travels of the two roods of the leaf.

[0013] In view of the aforementioned design solution, the casement handle can have a very compact box with an aesthetically attractive linear profile. However, the casement handle requires a complicated structure of the fixture, as the mechanism for the alternating movement of the sliding rods must be housed in the post of the fixture.

[0014] Furthermore, both the espagnolette handle and the casement handle are designed to impose a travel of approximately 17 mm on each one of the two rods used to close the fixture, without the possibility of varying such a travel.

[0015] EP2921622A1 describes a handle for a window equipped with two operating rods that can be operated in opposite directions. The operating rods face a frame assembly provided with a recess to accommodate the operating rods. An operating pin creates a closed position of the window, whereas another operating pin allows to tilt-and-turn the window.

[0016] The purpose of the present invention is to eliminate the drawbacks of the prior art by providing a handle for door and window fixtures that has a compact box and a mechanism suitable for operating externally with respect to the post of the frame of the leaf.

[0017] Another purpose of the present invention is to provide a handle for door and window fixtures that is highly versatile and can be easily installed both on a right-hand and a left-hand rotating leaf.

[0018] Yet another purpose of this invention is to devise a handle capable of adapting to the operating rods of a traditional door and window fixture.

[0019] These purposes are achieved in accordance with the invention, with the characteristics listed in the attached independent claim 1.

[0020] Advantageous embodiments of this invention are apparent from the dependent claims.

[0021] The handle according to the invention is defined in the independent claim 1.

[0022] Advantageously, such a solution minimizes the dimensions of the box of the handle (as in the case of a casement handle) and at the same time avoids the need to modify the structure of the frame of the post of the leaf (as in the case of an espagnolette handle).

[0023] For greater clarity, the description of the invention continues with reference to the attached drawings, which are illustrative and not limiting, wherein: Fig. 1 is an axonometric view of the handle according to the invention in open position; Fig. 1A is an exploded view of the handle of Fig. 1, seen from the outside; Fig. 1B is an exploded view of the handle of Fig. 1, seen from the inside; Fig. 2 is an axonometric view of the handle according to the invention in closing position; Fig. 2A is an exploded view of the handle of Fig. 2, seen from the outside; Fig. 3 is a perspective view illustrating two blocks of the handle according to the invention; Fig. 4A is a perspective view illustrating the mechanism of the handle with the blocks in opening position; Fig. 4B is the same view as Fig. 4A, except for it illustrates the mechanism of the handle with the blocks in closing position; Fig. 5A is an axonometric view of the handle of Fig. 1 that is being mounted on a post of a leaf of a fixture; Fig. 5B is the same view as Fig. 5A, except for it shows the handle already mounted on the post of the leaf; Fig. 6 is an exploded perspective view of an espagnolette handle with cremone bolt according to the prior art.

[0024] With the aid of the Figures, a handle according to the invention is described, which is comprehensively indicated with the reference letter M.

[0025] With reference to Figs. 1, 1A, and 3, the handle (M) comprises a handle piece (1), a box (2), an operating mechanism (7), and blocks (8, 9).

[0026] With reference to Fig. 3B, the box (2) is fixed to a front edge (L1) of a post (L) of the leaf of the fixture, so as to protrude anteriorly from the leaf.

[0027] With reference to Fig. 1, the operating mechanism (7) is mounted inside the box (2) and the handle piece (1) is mounted so as to rotate externally with respect to the box (2).

[0028] With reference to Fig. 5A, the blocks (8, 9) are respectively fixed to operating rods (A1, A2) that are slidingly mounted in a groove (L2) that extends longitudinally in the post (L) of the leaf.

[0029] Going back to Fig. 1, the handle piece (1) comprises a handgrip (1a) and a tang (1b) arranged at 90° with respect to the handgrip (1a).

[0030] With reference to Fig. 1B, the tang (1b) of the handle piece has an axial hole (1b') with prismatic cross-section and at least one pair of peripheral seats (11) arranged in diametrically opposite positions.

[0031] With reference to Fig. 1B, the box (2) has a seat (25) wherein the operating mechanism (7) is housed. In the seat (25) of the box there are two grooves (26) arranged in opposite positions.

[0032] With reference to Fig. 1A, the box (2) has a front portion (20) with a central hole (20a), a first pair of peripheral holes (21a), and a second pair of peripheral holes (21b). The central hole (20a) is a through hole and communicates with the seat (25) of the box. The first pair of peripheral holes (21a) comprises two holes arranged in diametrically opposite directions. The second pair of peripheral holes (21b) comprises two holes arranged in diametrically opposite directions. The four peripheral holes (21a, 21b) of the front part of the box are angularly spaced by 90° from each other.

[0033] Stabilizing means (27) are mounted in the peripheral seats (11) of the tang (1b) of the handle piece and are selectively engaged either in the first pair of peripheral holes (21a) or in the second pair of peripheral holes (21b) to stabilize the handle piece (1) in opening position or in closing position. The stabilizing means (27) comprise a pair of springs (23) connected to respective balls (22). The springs (23) are housed in the peripheral seats (11) of the tang of the handle piece in diametrically opposite positions. The balls (22) are stressed by the springs in order to be selectively housed either in the first pair of peripheral holes (21a) or in the second pair of peripheral holes (21b).

[0034] With reference to Figs. 1A and 1B, the operating mechanism (7) comprises: a toothed wheel (3) suitable for being connected to the handle piece (1), and a first lever (4) and a second lever (5) suitable for being operated by the toothed wheel (3).

[0035] With reference to Figs. 4A and 4B, the first lever (4) and the second lever (5) of the operating mechanism are connected to respective blocks (8, 9). In such a case, the front edge (L1) of the post has an opening (AL) through which the two levers (4, 5) are inserted and connected to the blocks (8, 9).

[0036] With reference to Figs. 5A and 5B, the blocks (8, 9) are connected to the respective operating rods (A1, A2) arranged along the post (L) of the leaf of the fixture.

[0037] Returning to Figs. 1A and 1B, the toothed wheel (3) is a wheel with conical teeth. A square pin (30) protrudes axially from the toothed wheel (3). The square pin (30) is connected to the toothed wheel (3) by means of a cylindrical shoulder (31).

[0038] The square pin (30) passes through the central hole (20a) of the front part of the box and is engaged in the central hole (1b') of the tang of the handle piece. In this way, an operation of the handle piece (1) causes a rotations of the toothed wheel (3) in either direction.

[0039] The levers (4, 5) are pivoted to the box (2) by means of a pivoting pin (6). The pivoting pin (6) passes through holes (40, 50) of the levers. The ends (6a, 6b) of the pivoting pin (6) are engaged in the grooves (26) of the box.

[0040] With reference to Fig. 1, the first lever (4) comprises: a plate (4a) arranged edgeways; a rounded tip (4b) with higher height than the plate (4a); a lug (41) connected to the plate (4a) on the opposite side of the rounded tip (4b).

[0041] The lug (41) of the first lever is a sector of a circle of a conical toothed when having a toothed sector (41a) with conical toothing.

[0042] The second lever (5) comprises: a plate (5a) arranged edgeways; a rounded tip (5b) with higher height than the plate (4a); an arm (5c) that protrudes perpendicularly from the plate (5a); and a lug (51) connected to the arm (4c).

[0043] The lug (51) of the second lever is a sector of a circle of a conical toothed wheel having a toothed sector (51a) with conical toothing.

[0044] The two lugs (41, 51) of the levers are arranged in such a way that the respective toothed sectors (41a, 51a) face each other at a suitable distance to engage the toothed wheel between them (3). The pivoting pin (6) of the two levers (4, 5) is perpendicular to the axis of rotation of the toothed wheel (3).

[0045] The two levers (4, 5) are partially contained inside the box (2), in a condition in which the lugs (41, 51) are inside the box that contains the toothed wheel (3), whereas the plates (4a, 5a) and the tips (4b, 4c) of the levers protrude from the box (2) on the opposite side of the handle piece (1).

[0046] With reference to Fig. 3, each block (8, 9) has a body (80) in which a seat (81, 91) is formed. The seats (81, 91) of the body of each block are closed seats, i.e., they are surrounded by the body of the block. The seats (81, 91) of the blocks are shaped like slots with a rectangular cross-section.

[0047] With reference to Figs. 4A and 4B, the plates (4a, 5a) of the levers are arranged in the seats (81, 91) of the blocks.

[0048] Returning to Fig. 3, the blocks (8, 9) have respective slides (82, 92) that are slidingly mounted in the longitudinal groove (L1) of the post.

[0049] The first block (8) has a wing (83) that protrudes upwards. The second block (9) has a wing (93) that protrudes downwards. The wing (83) is connected to the body (80) of the first block by means of a step (84). In this way, the wing (83) of the first block is lowered with respect to the body (80) of the first block.

[0050] The wings (83, 93) of the blocks have respective attachments (85, 95) that are respectively fixed to the first operating rod (A1) and to the second operating rod (A2).

[0051] With reference to Figs. 3A and 3B, the operating rods (A1, A2) are slidingly mounted in a groove (L2) of the post. The first operating rod (A1) extends above the first block (8) and slides in the groove (L1) of the post. The second operating rod (A2) extends below the second block (9) and slides in the groove (L1) of the post.

[0052] Returning to Fig. 3, the wings (83, 93) of the blocks are provided with respective elliptical-shaped engagement seats (86, 96) that protrude outwards in opposite direction with respect to the attachments (85, 95). The engagement seats (86, 96) are engaged into a counter seat fixed to a frame of the fixture to close the fixture.

[0053] The counter seats have a standard configuration and are arranged in standard positions in the frame of a fixture. In this way, the engagement seats (86, 96) of the blocks (8, 9) are suitable for being engaged into standard counter seats arranged in standard positions in the frame of a fixture.

[0054] The operating mechanism (7) can move from an opening position, wherein the levers (4, 5) are superimposed and also the bodies (80, 90) of the blocks are superimposed, to a closing position, wherein the levers (4, 5) are spread apart and the bodies (80, 90) of the blocks are spaced apart.

[0055] Therefore, the blocks (8, 9) have been designed so that the bodies (80, 90) of the blocks can be superimposed one in front of the other (in a space-saving configuration) when the operating mechanism (7) is in the opening position of the fixture.

[0056] It should be noted that, when the operating mechanism (7) is in opening position and the bodies (80, 90) of the blocks are superimposed, the body (90) of the second block abuts against the step (84) of the first block and the wings (83, 93) of the two blocks lie on the same plane so as to ensure a perfect coupling with the operating rods (A1, A2).

[0057] Furthermore, the blocks (8, 9) have been designed to engage with the levers (4, 5) of the operating mechanism that innovatively move in a scissor-like manner, one in front of the other, as well as to engage with operating rods (A1, A2) of traditional type that are commonly used in the leaves of door and window fixtures and with standard counter seats arranged in standard positions in the frames of traditional door and window fixtures.

[0058] The operation of the handle (M) is described below.

[0059] The operating mechanism (7) of the handle (M) can be alternately disposed in an opening position and in a closing position when the handle piece (1) rotates in either direction by an angle of 90°. The rotations of the handle piece (1) cause the toothed wheel (3) to rotate in either direction. The rotations of the toothed wheel (3) cause a scissor-like movement of the levers (4, 5) that go from a position in which they are superimposed to a position in which they are spread apart.

[0060] The scissor-like movement of the levers (4, 5) causes a translation of the blocks (8, 9) that are integral with the first and the second operating rod (A1, A2), respectively. In this way, the two operating rods (A1, A2) translate simultaneously, one upwards and the other downwards or vice versa, closing or opening the fixture.

[0061] Figs. 1 and 1A show the handle (M) in the opening position of the fixture, wherein the handle piece (1) of the handle is orthogonal to the post (L) of the leaf. In such an opening position, the two levers (4, 5) of the handle (M) are kept in a superimposed position outside the box (2).

[0062] Figs. 2 and 2A show the handle (M) in the closing position of the fixture, wherein the handle piece (1) of the handle is parallel to the post (L) of the leaf. In such a closing position, the two levers (4, 5) are disposed outside of the box (2) in a spread-apart position with an angle of approximately 60°-100° between them.

[0063] Fig. 4A shows the opening position of the operating mechanism (7) wherein the levers (4, 5) are superimposed and also the bodies (80, 90) of the blocks are superimposed.

[0064] Fig. 4B shows the closing position of the operating mechanism (7), wherein the levers (4, 5) are spread apart and the bodies (80, 90) of the blocks are spaced apart.

[0065] Such a spread-apart position of the levers (4, 5) is assumed when the handle piece (1) of the handle has been rotated downwards by 90°, in a position parallel to that of the post (L) of the leaf. Such a spreading apart of the levers (4, 5) causes the sliding in opposite directions of the two blocks (8, 9) that are integral with the two operating rods (A1, A2). Otherwise said, the first operating rod (A1) slides upwards and the second operating rod (A2) slides downwards, thus locking the window fixture.

[0066] Having a rounded shape, the tips (4b, 5b) of the two levers facilitate the travels of the two blocks (8, 9) in opposite directions, acting as cams inside the seats (81, 91) of the blocks.

[0067] A rotation of the handle piece (1) of the handle (M) in opposite direction causes the two operating rods (A1, A2) to slide in the opposite direction, resulting in the disengagement of the operating rods (A1, A2) from the locking position.

[0068] Figs. 5A and 5B illustrate the cooperation modes between the levers (4, 5) of the handle, the blocks (8, 9), and the traditional pair of operating rods (A1, A2) that are slidingly housed in the groove (L1) of the post (L) of the leaf in order to open and close the fixture.

[0069] The front edge (L1) of the post (L) has the slot (AL) in the position where the box (2) of the handle is to be fixed. Therefore, the levers (4, 5) of the handle are inserted through the slot (AL) and are engaged in the seats (81, 91) of the blocks fixed to the operating rods (A1, A2).

[0070] Fig. 2 shows the main advantage of the present invention in terms of limiting the height of the box (2) of the handle. The height of the box (2) is limited to the space necessary to allow the levers (4, 5) to spread apart.

[0071] The handle (M) allows to easily vary the length of the travel of the operating rods (A1, A2) mounted on the post (L) of the leaf.

[0072] In a preferred embodiment of the invention, the transmission ratio between the toothed wheel (3) and the toothed sectors (41a, 51a) of the two lugs of the levers is set in such a way that the spreading apart of the two levers (4, 5) imposes opposite travels on the two operating rods (A1, A2) of the fixture - i.e. an upward travel and a downward travel - for a standard length of 17 mm. However, a simple variation in the transmission ratio between the toothed wheel (3) and the toothed sectors (41a, 51a) allows to vary the tilt angle between the two levers (4, 5), with a consequent variation in the length of the travels of the operating rods (A1, A2). The variation in the transmission ratio between the toothed wheel (3) and the toothed sectors (41a, 51a) can be obtained by modifying the radii of the toothed wheel and / or of the toothed sectors.

[0073] The handle (M) can be mounted on window fixtures with either right-hand or left-hand opening by simply reversing the positions of the first lever (4) and of the second lever (5).

Claims

1. Handle (M) for door / window fixtures comprising: - a box (2) suitable for being fixed to a front edge (L1) of a post (L) of a leaf of a fixture, - a handle piece (1) rotatably mounted on the box (2), - two blocks (8, 9) connected to respective operating rods (A1, A2) slidingly mounted on the post (L) of the leaf to close the leaf, and - an operating mechanism (7) arranged in the box (2) and connected to the handle piece (1) and to the blocks (8, 9) so that a rotation of the handle piece (1) causes a translation of the operating rods (A1, A2) in opposite directions; wherein each block (8, 9) has a body (80, 90) with a slot-shaped seat (81, 91) with a rectangular cross-section; said operating mechanism (7) comprises two levers (4, 5) having a tip (4a, 5a) that is engaged in a respective seat (81, 91) of said blocks connected to the operating rods, the bodies (80, 90) of said blocks are superimposed one in front of the other when the operating mechanism (7) is in the opening position of the fixture and are spaced apart when the operating mechanism (7) is in the closing position of the fixture.

2. The handle (M) according to claim 1, wherein each block (8, 9) has an engagement seat (86) that protrudes from the block to be engaged into a counter seat fixed to a frame of the fixture.

3. The handle (M) according to claim 1 or 2, wherein said operating mechanism (7) comprises: - a toothed wheel (3) connected to the handle piece (1) so as to rotate together with the handle piece, and - a first lever (4) and a second lever (5) pivoted to the box (2) and provided with respective toothed sectors (41a, 41b) that are engaged in said toothed wheel (3), so that a rotation of the toothed wheel (3) causes a scissor-like movement of the levers (4, 5) from an opening position of the fixture, wherein the levers are superimposed one in front of the other, to a closing position of the fixture, wherein the levers are spread apart.

4. The handle (M) according to claim 3, wherein said toothed wheel (3) has a conical toothing and said toothed sectors (41a, 51a) have a conical toothing.

5. The handle (M) according to claim 3 or 4, wherein said toothed wheel (3) comprises a pin (30) with prismatic section that passes through a central hole (20a) of said box and is engaged in a hole (1b') with prismatic section of said handle piece (1).

6. The handle (M) according to any of claims 3 to 5, wherein said levers (4, 5) are pivoted to said box (2) by means of a pivoting pin (6) with orthogonal axis relative to the axis of rotation of said toothed wheel (3).

7. The handle (M) according to any of the preceding claims, wherein the tips (5a, 5b) of said levers are rounded so as to act as cams in the seats (81, 91) of the blocks.

8. The handle (M) according to any of claims 2 to 7, wherein said blocks (8, 9) have respective wings (83, 93) projecting upward and downward to support said engagement seats (86, 96).

9. The handle (M) according to claim 8, wherein said blocks (8, 9) have respective attachments (85, 95) provided in said wings (83, 93) in opposite position to the engagement seats (86, 96); wherein said attachments (85, 95) are configured to be fixed to said operating rods (A1, A2).

10. The handle (M) according to any of the preceding claims, wherein said blocks (8, 9) have respective slides (82, 92) that are slidingly mounted in a groove (L2) of said post of the leaf.

11. The handle (M) according to any of claims 8 to 10, wherein the first block (8) has a step (84) between the body (80) and the wing (83) of the first block, so that when said operating mechanism (7) is in the opening position and the bodies (80, 90) of said blocks are superimposed, the body (90) of the second block abuts against the step (84) of the first block and the wings (83, 93) of the two blocks lie in the same plane.

12. The handle (M) according to any of the preceding claims, comprising stabilizing means (27) arranged between the handle piece (1) and the box (2) to stabilize the handle piece in the opening position and in the closing position.

13. The handle (M) according to claim 12, wherein said handle piece (1) has a handgrip (1a) and a tang (20) with peripheral seats (11); said box (2) has a front portion (20) with a first pair of peripheral holes (21a) and a second pair of peripheral holes (21b); said stabilizing means (27) are mounted in the peripheral seats (11) of the tang (1b) of the handle piece and are selectively engaged either in the first pair of peripheral holes (21a) or in the second pair of peripheral holes (21b) to stabilize the handle piece (1) in the opening position or in the closing position.

14. The handle (M) according to claim 13, wherein said stabilizing means (27) comprise a pair of springs (23) connected to respective balls (22); wherein the springs (23) are housed in the peripheral seats (11) of the tang of the handle piece in diametrically opposite positions and the balls (22) are stressed by the springs (23) to be selectively engaged either in the first pair of peripheral holes (21a) or in the second pair of peripheral holes (21b).

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