Slat control mechanism for window blind

Abstract

A slat control mechanism for a window blind, the slat control mechanism comprising a pull rope (1), a ladder rope (2), a rope winder (3), a transmission gear set and slats (14), wherein the transmission gear set comprises a driving gear (5) and a driven gear (6), the driven gear (6) being an intermittent gear provided with teeth (19) meshed with the driving gear (5); one end of the pull rope (1) is fixed to the rope winder (3), and one end of the ladder rope (2) is fixed to the driven gear (6); and the pull rope (1) continuously acts under the rotation of the rope winder (3), and the ladder rope (2) acts intermittently along with the action of the driven gear (6). In the process whereby the pull rope (1) continuously retracts the slats (14) or releases the slats (14), the ladder rope (2) acts intermittently along with the action of the driven gear (6), thereby avoiding the abnormal wear of the ladder rope (2) in the conventional technology caused by the continuous retraction of the ladder rope (2) along with the pull rope (1), and even avoiding the additional load on the entire transmission mechanism.

Description

Blade control mechanism of shutter TECHNICAL FIELD

[0001] The present application relates to the field of architectural decoration, in particular to the shutter of door, window and other parts, and specifically relates to a blade control mechanism of shutter. BACKGROUND

[0002] The shutter is a functional window curtain which can adjust the light transmittance and ventilation rate by controlling the turning angle of curtain piece. The main components of the shutter include blades, pull ropes and ladder ropes. When in use, the curtain piece can be folded by operating the pull rope, and the blades can be turned to a certain angle by operating the ladder rope.

[0003] At present, the transmission mode between the pull rope and the ladder rope mainly includes the following two modes: the pull rope and the ladder rope are simultaneously driven by the same rotating shaft (as shown in the publication CN 201843497U) or the pull rope and the ladder rope are driven by two independent power sources (as shown in the publications CN 106996256B and CN 207332716U).

[0004] For the above two modes, there are defects:

[0005] 1. When the pull rope and the ladder rope are simultaneously driven by the same rotating shaft, the movable stroke of the ladder rope is far smaller than that of the pull rope. Therefore, when the rotating shaft drives the pull rope to rotate and exceeds the movable stroke of the ladder rope, the ladder rope will be driven by the rotating shaft to rub against the surrounding components and generate additional load. Over a long period of time, a lot of dust will be generated and the service life of the ladder rope will be reduced.

[0006] 2. When the ladder rope is rotated by an independent power source, the production cost of the whole control mechanism is increased. In addition, as the mechanism becomes more complex, the probability of failure is also increased. SUMMARY

[0007] The present application aims to overcome the above-mentioned defects and provides a blade control mechanism of shutter, which is simple, efficient and has high reliability.

[0008] In order to achieve the above-mentioned purpose, the present application is implemented as follows:

[0009] A shutter control mechanism of a shutter, comprising a pull rope (1), a ladder rope (2), a winding rope device (3), an upper beam (15), a lower beam assembly and a shutter (14), the pull rope (1) and the ladder rope (2) respectively pass through the shutter (14) and are respectively used for controlling the folding, unfolding and turning actions of the shutter (14); further comprising a fixed seat (4) and a transmission gear set located inside the fixed seat (4); the transmission gear set comprises a driving gear (5) and a driven gear (6); the driven gear (6) is an incomplete gear, and a gear tooth (19) engaged with the driving gear (5) is arranged on the driven gear (6); one end of the winding rope device (3) is fixedly connected with the driving gear (5) and is rotationally connected with the fixed seat (4), a pin shaft (11) is arranged at the center of the driven gear (6), and the pin shaft (11) is also rotationally connected with the fixed seat (4); one end of the pull rope (1) is fixed on the end of the winding rope device (3), and one end of the ladder rope (2) is fixed on the driven gear (6); the winding rope device (3), the fixed seat (4) and the transmission gear set are all arranged in the hollow upper beam (15); when the winding rope device (3) rotates in one direction and drives the driving gear (5) to rotate, the driving gear (5) is engaged with the gear tooth (19) of the driven gear (6), then the driving gear (5) drives the driven gear (6) to rotate, and when the driving gear (5) continues to rotate and is disengaged from the gear tooth (19) of the driven gear (6), the driving gear (5) continues to rotate with the winding rope device (3), and the driven gear (6) stops rotating; in this way, when the pull rope (1) is continuously wound or unfolded by the rotation of the winding rope device (3), the ladder rope (2) remains stationary because the gear tooth (19) of the driven gear (6) is disengaged from the driving gear (5).

[0010] The shutter control mechanism of the shutter described above, a bearing (23) is arranged on the winding rope device (3), the bearing (23) is embedded in the fixed seat (4), in this way, the winding rope device (3) can smoothly rotate under the action of the bearing (23).

[0011] In the shutter control mechanism for the shutter according to the present application, the pull rope (1) and the ladder rope (2) are fixed on the driving rope winding device (3) and the driven gear (6) respectively; meanwhile, the driven gear (6) is designed as an incomplete gear with gear teeth (19); thus, when the driving rope winding device (3) continuously rotates the driving gear (5), the driven gear (6) has two states of "follow-up rotation" or "non-follow-up rotation"; in the present application, during the process of continuously folding or unfolding the shutter (14) by the pull rope (1), the ladder rope (2) moves intermittently according to the movement of the driven gear (6), that is, when the shutter (14) is turned to the vertical state, it is not affected by the continuous movement of the pull rope (1), that is, the ladder rope (2) which is straddled on the driving rope winding device (3) is prevented from continuously rubbing and even from bringing additional load to the whole transmission mechanism, so as to ensure the service life and normal operation of the whole transmission mechanism.

[0012] On the basis of the above, the present application further provides an elastic component with elastic deformation function between the driving gear (5) and the driven gear (6), so that the driving gear (5) and the driven gear (6) can be returned from the disengaged state to the required engaged state at any time, thereby realizing the one-way transmission purpose from the driving gear (5) to the driven gear (6).

[0013] In order to achieve the above-mentioned purpose, the present application adopts the following mode:

[0014] In the shutter control mechanism, a spring (8) is embedded in the driven gear (6), the opening of the spring (8) faces the gear teeth (19), and the two ends of the spring (8) extend to the two ends of the gear teeth (19) respectively; the spring (8) is used to realize the one-way transmission function, so that when the driving gear (5) is disengaged from the gear teeth (19) of the driven gear (6), the driving gear (5) will contact the spring (8) and make it elastically deform towards the gear teeth (19), so that the driving gear (5) cannot transmit torque to the driven gear (6), and thus the driving gear (5) continues to rotate while the driven gear (6) remains stationary; at this time, if the driving gear (5) is reversed, the end of the spring (8) bears the pushing force of the driving gear (5) away from the gear teeth (19) and does not elastically deform, at this time, the driving gear (5) normally transmits power through the spring (8) and makes the driven gear (6) rotate, and the driving gear (5) returns to the engaged state with the driven gear (6) with the rotation of the driven gear (6), so as to adjust the angle of the shutter (14).

[0015] Further, the above-mentioned leaf spring (8) can also be replaced by a torsion spring (9) embedded in the driven gear (6) and having two legs extending towards the two ends of the gear teeth (19); the torsion spring (9) is used to realize the function of one-way transmission, so that when the driving gear (5) is disengaged from the gear teeth (19) of the driven gear (6), the driving gear (5) will contact the torsion spring (9) and cause it to elastically deform towards the gear teeth (19), so that the torsion spring (9) cannot transmit torque to the driven gear (6), and thus even if the driving gear (5) continues to rotate, the driven gear (6) remains stationary; at this time, if the driving gear (5) is reversed, the end of the torsion spring (9) will bear the pushing force of the driving gear (5) away from the gear teeth (19) and will not elastically deform, at this time the driving gear (5) will normally transmit power through the torsion spring (9) and make the driven gear (6) rotate, and with the rotation of the driven gear (6) the driving gear (5) will return to the engaged state with the driven gear (6), and the angle of the louver (14) can be adjusted.

[0016] Further, the above-mentioned torsion spring (9) can also be replaced by two elastic metal sheets (10) embedded in the driven gear (6) and extending towards the two ends of the gear teeth (19); the two elastic metal sheets (10) are used to realize the function of one-way transmission, so that when the driving gear (5) is disengaged from the gear teeth (19) of the driven gear (6), the driving gear (5) will contact the elastic metal sheets (10) and cause them to elastically deform towards the gear teeth (19), so that the elastic metal sheets (10) cannot transmit torque to the driven gear (6), and thus even if the driving gear (5) continues to rotate, the driven gear (6) remains stationary; at this time, if the driving gear (5) is reversed, the end of the elastic metal sheet (10) will bear the pushing force of the driving gear (5) away from the gear teeth (19) and will not elastically deform, at this time the driving gear (5) will normally transmit power through the elastic metal sheet (10) and make the driven gear (6) rotate, and with the rotation of the driven gear (6) the driving gear (5) will return to the engaged state with the driven gear (6), and the angle of the louver (14) can be adjusted.

[0017] Further, the above-mentioned leaf spring (8) can also adopt another deformation, both ends of the spring (8) have bends, wherein the last bend first section (8.1) is located outside the opening (7), the bend second section is partially located inside the opening (7), and the bend third section (8.3) is located inside the opening (7). When the driving gear (5) is about to disengage from the gear teeth (19) of the driven gear (6), under the action of the elastic force, the bend first section (8.1) and the bend second section (8.2) form an outwardly extending corner, which engages with the driving gear (5); when the driving gear (5) continues to rotate in the same direction, the gear teeth of the driving gear (5) will press on the bend first section (8.1), forcing the bend second section (8.2) to retreat away from the driving gear (5), so that the driving gear (5) cannot transmit torque to the driven gear (6), and the driven gear (6) remains stationary with the ladder rope (2); at this time, if the driving gear (5) reverses, its gear teeth will move away from the bend first section (8.1), and under the action of the elastic force, the bend first section (8.1) and the bend second section (8.2) form an outwardly extending corner, which engages with the driving gear (5), the gear teeth of the driving gear (5) press on the bend second section (8.2), and the bend second section (8.2) presses on the inner wall of the opening (7) of the driven gear (6), so that the driven gear (6) rotates and its gear teeth (19) re-engage with the driving gear (5), thereby driving the ladder rope (2) to reverse and making the louver (14) reverse.

[0018] In order to facilitate the disassembly of the driven gear, one side of the circular hole (25) on the fixed seat (4) is provided with an open sliding groove (21), and the pin shaft (11) inserted at the center of the driven gear (6) can enter the circular hole (25) through the open sliding groove (21).

[0019] In addition to the above transmission mechanism, the louver control mechanism of the louver window also proposes a series of improvements for the assembly of the pull rope (1) and the ladder rope (2).

[0020] In the louver control mechanism of the louver window, a ladder rope guide groove (18) is also included, which is arranged beside the driven gear (6) and rotates with the driven gear (6), and one end of the ladder rope (2) is fixedly embedded in the ladder rope guide groove (18).

[0021] In the louver control mechanism of the louver window, a ladder rope guide groove (18) is also included, which is arranged beside the driven gear (6) and rotates with the driven gear (6), and one end of the ladder rope (2) is fixedly embedded in the ladder rope guide groove (18).

[0021] In the louver control mechanism of the louver window, a ladder rope guide groove (18) is also included, which is arranged beside the driven gear (6) and rotates with the driven gear (6), and one end of the ladder rope (2) is fixedly embedded in the ladder rope guide groove (18).

[0022] In the shutter control mechanism of the shutter of the present application, a stopper (13) is arranged on the inner side of the fixed seat (4) below the round hole (25), and is used to limit the rotation range of the driven gear (6) to the range required for the shutter to turn over, for example, between 0 o ~180 o .

[0023] In the shutter control mechanism of the shutter of the present application, the bottom of the fixed seat (4) is provided with a rope passing hole (12) and a pull rope hole (26), the diameter of the rope passing hole (12) is larger than that of the pull rope hole (26), and the pull rope hole (26) is in communication with the rope passing hole (12). When assembled, one end of the pull rope (1) is first passed through the rope passing hole (12) with a larger diameter, and then translated into the pull rope hole (26) with a smaller diameter, thereby improving the assembly efficiency.

[0024] In the shutter control mechanism of the shutter according to the present application, a lower beam assembly is further included for completely collecting all the shutters (14) in the folding operation, preventing the collected shutters (14) from contacting the glass on both sides, and avoiding unnecessary frictional resistance with the glass in the lifting and lowering process. The lower beam assembly includes a lower beam body (40), lower beam groove rails (41) on both sides of the lower beam body (40), and a connecting assembly for connecting the lower beam body (40) and the lower beam groove rails (41). The connecting assembly is fixed at both ends of the lower beam body (40). The lower beam groove rails (41) further include a U-shaped groove (48). Both ends of the lower beam body (40) are fixed on the connecting assembly and can slide up and down in the U-shaped groove (48) of the lower beam groove rails (41) together with the connecting assembly. The connecting assembly includes a guide connecting plate (42), springs (44), and connecting ropes (43) connected with the guide connecting plate (42) and the lower beam groove rails (41) respectively. In this way, the lower beam groove body (41) and the guide connecting plate (42) are elastically connected by the springs (44) and the connecting ropes (43) to always maintain tension. The guide connecting plate (42) is further connected with the end of the pull rope (1). In this way, when performing the folding operation, the rotation of the winding rope device (3) first drives the driven gear (6) to rotate, and the shutters (14) are turned to the vertical state through the ladder rope (3). With further rotation of the winding rope device (3), the pull rope (1) drives the lower beam assembly to gradually rise, and the shutters (14) gradually fall into the U-shaped groove (48) of the lower beam groove rails (41) in sequence and are supported by the lower beam body (40). With the continuous rotation of the winding rope device (3), when the top end of the lower beam groove rails (41) hits the upper beam (15), the lower beam groove rails (41) stop rising, and the lower beam body (40) continues to rise in the U-shaped groove (48) under the continuous tightening force of the pull rope (1) until all the shutters (14) are collected and hit the upper beam (15). Conversely, when performing the unfolding operation, the winding rope device (3) reverses rotation and drives the driven gear (6) to reverse rotation, so that the ladder rope (3) reverses adjustment to the vertical position of the shutters (14). At the same time, with the continuous descent of the pull rope (1), the lower beam body (40) returns to the bottom of the U-shaped groove (48) under the tension of the springs (44) and the connecting ropes (43). At the same time, with the continuous action of the winding rope device (3), the pull rope (1) is further relaxed, and the shutters (14) are unfolded in sequence. In the above process, the uncollected shutters (14) are in the vertical state, and the collected shutters (14) are in the U-shaped groove (48), avoiding the friction of the shutters (14) with the glass in the lifting and lowering process.

[0025] The lower beam assembly can also be fixed, which comprises a lower beam body (40), a lower beam channel rail (41) and a fixed connecting plate (47), two ends of the fixed connecting plate (47) are fixedly connected with the lower beam body (40) and the lower beam channel rail (41) respectively, one end of the pull rope (1) is fixedly connected with the fixed connecting plate (47); the lower beam channel rail (41) comprises a U-shaped groove (48), and a first guide piece (45) and a second guide piece (46) are arranged at the opening at the top of the U-shaped groove (48), the outer sides of the first guide piece (45) and the second guide piece (46) are tightly attached to the two sides of the glass respectively, for guiding the louvers (14) into the U-shaped groove (48) of the lower beam channel rail (41) and preventing the louvers (14) from falling out of the U-shaped groove (48). When the lower beam assembly rises under the action of the pull rope (1), the louvers (14) above the lower beam assembly are in a vertical state due to the action of the ladder rope (2) and are sequentially fallen into the U-shaped groove (48) and then turned into a horizontal state, and rise together with the lower beam assembly until all the louvers (14) are neatly stacked and hit the upper beam (15), so that the contact between the louvers (14) and the glass and the additional resistance generated thereby are avoided. BRIEF DESCRIPTION OF DRAWINGS

[0026] Fig. 1 is a partial assembly schematic view of the embodiment 1 of the present application.

[0027] Fig. 2 is an exploded view of the louver control mechanism in the embodiment 1 of the present application.

[0028] Fig. 3 is a cross-sectional view I of the transmission gear set in the embodiment 1 of the present application.

[0029] Fig. 4 is a cross-sectional view II of the transmission gear set in the embodiment 1 of the present application.

[0030] Fig. 5 is a structural schematic view of the fixed seat in the embodiment 1 of the present application.

[0031] Fig. 6 is a working state view of the gear set and the metal sheet in the embodiment 1 of the present application.

[0032] Fig. 7 is an assembly view of the driven gear in the embodiment 2 of the present application.

[0033] Fig. 8 is a working state view of the gear set and the metal sheet in the embodiment 3 of the present application.

[0034] Fig. 9 is another schematic view of the spring (8) in the present application.

[0035] Fig. 10 is an assembly schematic view I of the modified spring (8) in the present application.

[0036] Fig. 11 is a schematic view I of the action of the modified spring (8) in the present application (the driving gear rotates counterclockwise).

[0037] Figure 12 is a schematic diagram of the operation of the spring (8) after modification (clockwise rotation of the driving gear).

[0038] Figure 13 is a schematic diagram of the assembly of the lower beam assembly (lower beam assembly with spring) according to the present application.

[0039] Figure 14 is a partial sectional view of Figure 13.

[0040] Figure 15 is a schematic diagram of the assembly of the lower beam assembly (lower beam assembly with fixed spring) according to the present application.

[0041] Figure 16 is an enlarged view of Figure 15. DETAILED DESCRIPTION

[0042] The technical solutions of the embodiments of the present application will be described clearly and completely below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of the present application. Embodiment 1

[0043] As shown in Figure 1, a shutter comprises an upper beam (15), a power source (16) fixed on the upper beam (15), an output shaft (17) of the power source (16) connected with a rope winding device (3), and a shutter control mechanism fixed on the upper beam (15) and sleeved on the rope winding device (3) and the output shaft (17), and a pull rope (1) and a ladder rope (2) are controlled by the shutter control mechanism.

[0044] As shown in Figures 2-6, the above-mentioned shutter control mechanism includes a fixed seat (4) and a transmission gear set inside the fixed seat (4); the transmission gear set includes a driving gear (5) and a driven gear (6), one end of the rope winding device (3) passes through the driving gear (5) and is rotatably connected with the fixed seat (4), and the center of the driven gear (6) is provided with a pin shaft (11), which is also rotatably connected with the fixed seat (4); the driven gear (6) is an incomplete gear, which includes a gear tooth (19) engaged with the driving gear (5); in this way, the rotation of the rope winding device (3) drives the driving gear (5) to rotate, when the driving gear (5) is engaged with the gear tooth (19) of the driven gear (6), the driving gear (5) drives the driven gear (6) to rotate, and when the driving gear (5) rotates to disengage from the gear tooth (19), the driving gear (5) continues to rotate with the rope winding device (3), and the driven gear (6) stops rotating; the pull rope (1) and the ladder rope (2) are respectively sleeved and fixed on the rope winding device (3) and the driven gear (6); the rotation of the rope winding device (3) drives the driving gear (5) to rotate and continuously wind or unwind the pull rope (1), and the ladder rope (2) remains stationary due to the stop of the driven gear (6); in this way, the pull rope (1) is continuously wound or unwound by the rotation of the rope winding device (3), and the ladder rope (2) remains stationary after the shutter (14) is turned to the vertical position.

[0045] The shutter control mechanism of the above-mentioned shutter, a bearing (23) is sleeved on the rope winding device (3), and the bearing (23) is embedded in the fixed seat (4); in this way, the rope winding device (3) can smoothly rotate under the action of the bearing (23).

[0046] The shutter control mechanism of the above-mentioned shutter, the pull rope (1) and the ladder rope (2) are respectively fixed on the driving rope winding device (3) and the driven gear (6); at the same time, the driven gear (6) is designed as an incomplete gear, which has a gear tooth (19); in this way, when the rope winding device (3) continuously rotates to drive the driving gear (5), the driven gear (6) has two states of "follow-up rotation" or "non-follow-up rotation"; in this way, in the present application, the pull rope (1) continuously folds or unfolds the shutter (14), and the ladder rope (2) intermittently moves according to the action of the driven gear (6), that is, when the shutter (14) is turned to the vertical position, it is not affected by the continuous action of the pull rope (1), that is, it avoids the continuous friction of the ladder rope (2) sitting on the rope winding device (3) and the additional load on the entire transmission mechanism caused by the continuous winding of the pull rope (1), thereby ensuring the service life and normal operation of the entire transmission mechanism.

[0047] In actual use, the pull rope (1) is driven by the winding device (3) to rotate the driving gear (5) clockwise or counterclockwise to realize the folding or unfolding of the louver (14). To this end, the application further provides an elastic component with elastic deformation function between the driving gear (5) and the driven gear (6), so that the meshing range between the driving gear (5) and the driven gear (6) is controlled within the designed range through the component.

[0048] In order to achieve the above purpose, the following method is adopted in embodiment 1:

[0049] As shown in Figure 6, the louver control mechanism of the above-mentioned louver window, in the driven gear (6), a piece of spring (8) is embedded, the opening of the piece of spring (8) faces the gear teeth (19), and the two ends of the piece of spring (8) extend to the two ends of the gear teeth (19) respectively; the piece of spring (8) is used to realize the function of one-way transmission, so that when the gear teeth (19) of the driving gear (5) and the driven gear (6) are disengaged, the driving gear (5) will contact the piece of spring (8) and make it elastically deform towards the gear teeth (19), so that the torque cannot be transmitted to the driven gear (6), so that even if the driving gear (5) continues to rotate, the driven gear (6) remains stationary; at this time, if the driving gear (5) is reversed, the end of the piece of spring (8) bears the thrust of the driving gear (5) away from the gear teeth (19) and does not elastically deform, at this time the driving gear (5) normally transmits power through the piece of spring (8) and makes the driven gear (6) rotate, and with the rotation of the driven gear (6) the driving gear (5) returns to the state of engaging with the driven gear (6), the angle of the louver (14) can be adjusted.

[0050] The louver control mechanism of the louver window further comprises a stop block (13), the stop block (13) is arranged on the inner side of the fixed seat (4) and below the circular hole (25), and the stop block (13) is used to limit the rotation range of the driven gear (6) within the required range of louver turning. Embodiment 2

[0051] Embodiment 2 is a modification of embodiment 1, specifically replacing the piece of spring (8) in embodiment 1 with an equivalent, and the rest of the components remain unchanged, so that the rest of the components in embodiment 2 are the same as those in embodiment 1.

[0052] In view of the above reasons, as shown in Fig. 7, in Embodiment 2, the leaf spring (8) is replaced by a torsion spring (9) embedded in the driven gear (6) and having two legs extending to the two ends of the gear teeth (19); the torsion spring (9) is used to achieve the effect of one-way transmission, so that when the driving gear (5) is disengaged from the gear teeth (19) of the driven gear (6), the driving gear (5) will contact the torsion spring (9) and cause it to elastically deform towards the gear teeth (19), so that it cannot transmit torque to the driven gear (6), so that even if the driving gear (5) continues to rotate, the driven gear (6) remains stationary; at this time, if the driving gear (5) is reversed, the end of the torsion spring (9) bears the pushing force of the driving gear (5) away from the gear teeth (19) and does not elastically deform, at this time the driving gear (5) normally transmits power through the torsion spring (9) and makes the driven gear (6) rotate, and with the rotation of the driven gear (6) the driving gear (5) returns to the engaged state with the driven gear (6), the angle of the louvers (14) can be adjusted. Embodiment 3

[0053] Embodiment 3 is a modification of Embodiment 1 or Embodiment 2, specifically replacing the leaf spring (8) or the torsion spring (9) in Embodiment 1 or Embodiment 2 with an equivalent replacement, while the remaining components remain unchanged, so that the remaining components in Embodiment 3 are the same as those in Embodiment 1 or Embodiment 2.

[0054] In view of the above reasons, as shown in Fig. 8, in Embodiment 2, the leaf spring (8) or the torsion spring (9) is replaced by two elastic metal sheets (10) embedded in the driven gear (6) and extending to the two ends of the gear teeth (19); the two elastic metal sheets (10) are used to achieve the effect of one-way transmission, so that when the driving gear (5) is disengaged from the gear teeth (19) of the driven gear (6), the driving gear (5) will contact the elastic metal sheets (10) and cause them to elastically deform towards the gear teeth (19), so that they cannot transmit torque to the driven gear (6), so that even if the driving gear (5) continues to rotate, the driven gear (6) remains stationary; at this time, if the driving gear (5) is reversed, the end of the elastic metal sheet (10) bears the pushing force of the driving gear (5) away from the gear teeth (19) and does not elastically deform, at this time the driving gear (5) normally transmits power through the elastic metal sheet (10) and makes the driven gear (6) rotate, and with the rotation of the driven gear (6) the driving gear (5) returns to the engaged state with the driven gear (6), the angle of the louvers (14) can be adjusted. Embodiment 4

[0055] The embodiment 4 is a modification of the embodiment 1, and specifically, the elastic deformation direction of the leaf spring (8) in the embodiment 1 is changed from the direction of deforming towards the tooth (19) to the direction of deforming away from the driving gear (5) to achieve disengagement from the meshing with the driving gear (5) and realize one-way transmission, and the specific implementation is as follows:

[0056] The spring (8) has two ends with bending, wherein the last bending first section (8.1) is located outside the opening (7), the bending second section is partially located inside the opening (7), and the bending third section (8.3) is located inside the opening (7). When the driving gear (5) is about to disengage from the tooth (19) of the driven gear (6), under the action of the elastic force, the outer extension of the corner formed by the bending first section (8.1) and the bending second section (8.2) meshes with the driving gear (5); when the driving gear (5) continues to rotate in the same direction, the tooth of the driving gear (5) will press on the bending first section (8.1), forcing the bending second section (8.2) to retreat away from the driving gear (5), so that the driving gear (5) cannot transmit torque to the driven gear (6), and the driven gear (6) remains stationary with the ladder rope (2); at this time, if the driving gear (5) reverses, its tooth will move away from the bending first section (8.1), and under the action of the elastic force, the outer extension of the corner formed by the bending first section (8.1) and the bending second section (8.2) meshes with the driving gear (5), the tooth of the driving gear (5) presses on the bending second section (8.2), and the bending second section (8.2) presses on the inner wall of the opening (7) of the driven gear (6), so that the driven gear (6) rotates and its tooth (19) re-meshes with the driving gear (5), thereby driving the ladder rope (2) to reverse and making the louver (14) reverse the angle.

[0057] From the above embodiments 1-4, it can be seen that the functions of the leaf spring (8), the torsion spring (9) and the elastic metal sheet (10) are the same, that is, by utilizing the elastic deformation capability, the leaf spring (8), the torsion spring (9) and the elastic metal sheet (10) produce elastic deformation in the backward or forward, upward or downward direction when subjected to the thrust of the driving gear (5), thereby achieving the purpose of one-way transmission of torque from the driving gear (5) to the driven gear (6) in the technical scheme of the present application.

[0058] Further, in the above embodiments 1-3, in order to facilitate the disassembly and assembly of the driven gear (6), the fixed seat (4) is provided with an open sliding groove (21), and the pin shaft (11) inserted at the center of the driven gear (6) can enter the circular hole (25) through the open sliding groove (21).

[0059] In addition to the above transmission mechanism, for the assembly of the pull rope (1) and the ladder rope (2), a series of improvements are also proposed in the above embodiments 1-4:

[0060] Further, in the above-mentioned embodiments 1-4, a ladder rope guide groove (18) is further included, which is arranged beside the driven gear (6) and rotates with the driven gear (6), and one end of the ladder rope (2) is fixedly embedded in the ladder rope guide groove (18).

[0061] Further, a ladder rope excess groove (22) is further arranged at the back of the above-mentioned ladder rope guide groove (18), when the driving gear (5) is disengaged from the driven gear (6) and the louvers (14) are in the vertical state, the ladder rope passes through the center of the driven gear (6) in the ladder rope excess groove (22), and no torque is generated on the driven gear (6), and no reverse torque is transmitted to the driving gear (5), so that the folding and unfolding of the louvers (14) is labor-saving.

[0062] Further, in the above-mentioned embodiments 1-4, a stop block (13) is further included, which is arranged inside the fixed seat (4) and below the ladder rope guide groove (18), and is used to limit the rotation range of the ladder rope guide groove (18) to 0 o ~180 o .

[0063] Further, in the above-mentioned embodiments 1-4, the bottom of the fixed seat (4) is provided with a rope passing hole (12) and a pull rope hole (26), the diameter of the rope passing hole (12) is larger than that of the pull rope hole (26), and the pull rope hole (26) is in communication with the rope passing hole (12), when assembled, one end of the pull rope (1) first passes through the rope passing hole (12) with larger diameter, and then translates into the pull rope hole (26) with smaller diameter, thereby improving the assembly efficiency.

[0064] Further, the above-mentioned embodiments 1~4 all further comprise a lower beam assembly for achieving the complete collection of all the louvers (14) in the folding operation, preventing the collected louvers (14) from contacting the glass on both sides, and avoiding unnecessary frictional resistance with the glass during the rising and falling process; the lower beam assembly comprises a lower beam body (40), a lower beam channel rail (41) located on both sides of the lower beam body (40), and a connecting assembly for connecting the lower beam body (40) and the lower beam channel rail (41), the connecting assembly is fixed at both ends of the lower beam body (40), the lower beam channel rail (41) further comprises a U-shaped groove (48), both ends of the lower beam body (40) are fixed on the connecting assembly and can slide up and down in the U-shaped groove (48) of the lower beam channel rail (41) together with the connecting assembly, the connecting assembly comprises a guide connecting plate (42), and a spring (44) and a connecting rope (43) connected with the guide connecting plate (42) and the lower beam channel rail (41) respectively, in this way, the lower beam channel body (41) and the guide connecting plate (42) are elastically connected through the spring (44) and the connecting rope (43) to always maintain tension, and the guide connecting plate (42) is further connected with the end of the pull rope (1); in this way, when the folding operation is performed, through the rotation of the winding rope device (3), the driven gear (6) is first driven to rotate, and the louvers (14) are turned to the vertical state through the ladder rope (3), with the further rotation of the winding rope device (3), the pull rope (1) drives the lower beam assembly to gradually rise, the louvers (14) gradually fall into the U-shaped groove (48) of the lower beam channel rail (41) in sequence and are supported by the lower beam body (40), with the continuous rotation of the winding rope device (3), when the top end of the lower beam channel rail (41) hits the upper beam (15), the lower beam channel rail (41) stops rising, and the lower beam body (40) continues to rise in the U-shaped groove (48) under the continuous tightening force of the pull rope (1) until all the louvers (14) are collected and hit the upper beam (15); conversely, when the unfolding operation is performed, the winding rope device (3) is reversely rotated and drives the driven gear (6) to reversely rotate, so that the ladder rope (3) is reversely adjusted to the vertical position of the louvers (14), at the same time, with the continuous descent of the pull rope (1), the lower beam body (40) returns to the bottom of the U-shaped groove (48) under the tension of the spring (44) and the connecting rope (43), and with the continuous action of the winding rope device (3), the pull rope (1) is further relaxed, and the louvers (14) are unfolded in sequence, in the above-mentioned process, the uncollected louvers (14) are in the vertical state, and the collected louvers (14) are in the U-shaped groove (48), avoiding the friction of the louvers (14) with the glass during the operation.

[0065] Further, the lower beam assembly can also be fixed: it includes a lower beam body (40), a lower beam channel rail (41) and a fixed connecting plate (47), the two ends of the fixed connecting plate (47) are fixedly connected with the lower beam body (40) and the lower beam channel rail (41) respectively, one end of the pull rope (1) is fixedly connected with the fixed connecting plate (47); the lower beam channel rail (41) includes a U-shaped groove (48), and a first guide piece (45) and a second guide piece (46) are arranged at the opening at the top of the U-shaped groove (48), the outer sides of the first guide piece (45) and the second guide piece (46) are tightly attached to the two sides of the glass respectively, for guiding the louvers (14) into the U-shaped groove (48) of the lower beam channel rail (41) and preventing the louvers (14) from falling out of the U-shaped groove (48). When the lower beam assembly rises under the action of the pull rope (1), the louvers (14) above the lower beam assembly are in a vertical state under the action of the ladder rope (2) and then fall into the U-shaped groove (48) in sequence and turn into a horizontal state, and rise together with the lower beam assembly, avoiding the contact between the louvers (14) and the glass and generating additional resistance.

[0066] The phase engagement control principle of the driven gear (6) and the driving gear (5) in the above-mentioned embodiments 1-4 is as follows:

[0067] Taking the leaf spring 8 in embodiment 1 as an example, when the driving gear (5) is disengaged from the tooth (19) of the driven gear (6) and continues to rotate, the ladder rope groove transition groove (22) of the driven gear (6) is in a vertical state, and the louver (14) is also in a vertical state under the action of the ladder rope (2). At this time, the spring (8) is elastically deformed in the direction of approaching the tooth (19) under the thrust of the driving gear (5), and at this time, the driving gear (5) cannot normally transmit power to the driven gear (6), and the driven gear (6) and the ladder rope (2) remain stationary. When the driving gear (5) reverses, the end of the spring (8) engages with the driving gear (5), and the spring (8) is driven by the driving gear (5) to rotate in the direction away from the tooth (19), so that the tooth (19) of the driven gear (6) reengages with the driving gear (5), thereby driving the ladder rope (2) to reverse and making the louver (14) reverse the angle.

[0068] The above are only embodiments provided by the present application and are not used to limit the present application. Although the present application is described in detail with reference to the embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or make equivalent replacements for some technical features, but any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A louver control mechanism of a louvered window, comprising a pull rope (1), a ladder rope (2), a winding device (3), an upper beam (15), a lower beam assembly and a louver (14), the pull rope (1) and the ladder rope (2) respectively passing through the louver (14) and being used to control the folding, unfolding and turning actions of the louver (14); characterized in that: The fixed seat (4) is internally provided with a transmission gear set, which comprises a driving gear (5) and a driven gear (6). The driven gear (6) is an incomplete gear, which is provided with a gear tooth (19) engaged with the driving gear (5). One end of the rope winding device (3) is fixedly connected with the driving gear (5) and rotatably connected with the fixed seat (4). A pin shaft (11) is arranged at the center of the driven gear (6), and the pin shaft (11) is also rotatably connected with the fixed seat (4). One end of the pull rope (1) is fixed on the end of the rope winding device (3), and one end of the ladder rope (2) is fixed on the driven gear (6). The rope winding device (3), the fixed seat (4) and the transmission gear set are arranged in the hollow upper beam (15). When the rope winding device (3) rotates in one direction and drives the driving gear (5) to rotate, the driving gear (5) is engaged with the gear tooth (19) of the driven gear (6), so that the driving gear (5) drives the driven gear (6) to rotate. When the driving gear (5) continues to rotate and is disengaged from the gear tooth (19) of the driven gear (6), the driving gear (5) continues to rotate with the rope winding device (3), and the driven gear (6) stops rotating. In this way, when the pull rope (1) is continuously wound or unwound by the rotation of the rope winding device (3), the ladder rope (2) remains stationary because the gear tooth (19) of the driven gear (6) is disengaged from the driving gear (5).

2. A louver control mechanism for a louvered window according to claim 1, characterized in that: The driven gear (6) further comprises a ladder belt groove (18) beside the gear tooth (19), and one end of the ladder rope (2) is fixed in the ladder rope groove (18) of the driven gear (6) and drives the louver (14) to adjust the angle with the rotation of the driven gear (6). The back of the ladder rope groove (18) of the driven gear (6) is provided with a ladder rope transition groove (22), and the depth reaches or approaches the center of the driven gear (6).

3. A louver control mechanism for a louvered window according to claim 1, wherein: Further comprising The spring (8) is arranged in the recess (24), and both ends of the spring (8) extend out of the opening (7); the width of the opening (7) is greater than the thickness of the spring (8) through the opening (7); under the action of the elasticity, the spring (8) is pressed on the side of the opening (7) away from the tooth (19), and the end of the spring (8) cannot move in the direction away from the tooth (19) under the action of the external force and must rotate together with the driven gear (6), but can be elastically deformed and move in the direction close to the tooth (19) under the action of the external force; when the driving gear (5) is disengaged from the tooth (19) of the driven gear (6) and continues to rotate, the transition groove (22) on the driven gear (6) is in a vertical state, and the louver (14) is also in a vertical state under the action of the ladder rope (2); at this time, the spring (8) is elastically deformed in the direction close to the tooth (19) under the action of the thrust of the driving gear (5), and the driving gear (5) cannot normally transmit power to the driven gear (6); the driven gear (6) and the ladder rope (2) remain stationary, and when the driving gear (5) reversely rotates, the end of the spring (8) engages with the driving gear (5), and is driven by the driving gear (5) to rotate in the direction away from the tooth (19), so that the tooth (19) of the driven gear (6) reengages with the driving gear (5), thereby driving the ladder rope (2) to overturn and making the louver (14) overturn.

4. A louver control mechanism for a louvered window according to claim 1, characterized by: The fixed seat (4) is provided with an open sliding groove (21), and the pin shaft (11) inserted in the center of the driven gear (6) enters the circular hole (25) at the end of the open sliding groove (21) through the open sliding groove (21).

5. A louver control mechanism for a louvered window according to claim 3 wherein: The spring (8) is a leaf spring, and the height of the spring (8) extending out of the opening (7) is lower than the addendum height of the tooth (19).

6. A louver control mechanism for a louvered window according to claim 3, wherein: The spring (8) is replaced by a torsion spring (9), and the height of the torsion spring (9) extending out of the opening (7) is lower than the addendum height of the tooth (19).

7. A louver control mechanism for a louvered window according to claim 3 wherein: The spring (8) has two ends with bending, wherein the last bending first section (8.1) is located outside the opening (7), the bending second section is partially located inside the opening (7), and the bending third section (8.3) is located inside the opening (7). When the driving gear (5) is about to disengage from the gear teeth (19) of the driven gear (6), under the action of the elastic force, the bending first section (8.1) and the bending second section (8.2) form an outwardly extending corner, which engages with the driving gear (5); when the driving gear (5) continues to rotate in the same direction, the gear teeth of the driving gear (5) will press on the bending first section (8.1), forcing the bending second section (8.2) to retreat away from the driving gear (5), so that the driving gear (5) continues to rotate and cannot transmit torque to the driven gear (6), and the driven gear (6) remains stationary with the ladder rope (2); at this time, if the driving gear (5) reverses, its gear teeth will move away from the bending first section (8.1), and under the action of the elastic force, the bending first section (8.1) and the bending second section (8.2) form an outwardly extending corner, which engages with the driving gear (5), the gear teeth of the driving gear (5) press on the bending second section (8.2), and the bending second section (8.2) presses on the inner wall of the opening (7) of the driven gear (6), so that the driven gear (6) rotates and its gear teeth (19) re-engage with the driving gear (5), thereby driving the ladder rope (2) to reverse and making the louver (14) reverse an angle.

8. A louver control mechanism for a louvered window according to claim 3, characterized by: The fixed seat (4) further comprises a stop block (13) located inside the fixed seat (4) and below the circular hole (25), which is used to limit the rotation range of the driven gear (6) within the required range of louver reversing.

9. A louver control mechanism for a louvered window according to claim 1, characterized by: The bottom of the fixed seat (4) is provided with a rope passing hole (12) and a pull rope hole (26), the diameter of the rope passing hole (12) is larger than that of the pull rope hole (26), and the pull rope hole (26) communicates with the rope passing hole (12), when assembled, one end of the pull rope (1) first passes through the larger diameter rope passing hole (12), and then translates into the smaller diameter pull rope hole (26), thereby improving the assembly efficiency.

10. A louver control mechanism for a louvered window according to claim 1, characterized by: The lower beam assembly is used to realize the complete collection of all shutters (14) in the folding work, prevent the collected shutters (14) from contacting the glass on both sides, and avoid unnecessary friction resistance with the glass in the process of rising and falling. The lower beam assembly comprises a lower beam body (40), lower beam groove rails (41) located on both sides of the lower beam body (40), and a connecting assembly for connecting the lower beam body (40) and the lower beam groove rails (41). The connecting assembly is fixed on both ends of the lower beam body (40). The lower beam groove rails (41) further comprise a U-shaped groove (48). Both ends of the lower beam body (40) are fixed on the connecting assembly and can slide up and down in the U-shaped groove (48) of the lower beam groove rails (41) together with the connecting assembly. The connecting assembly comprises a guide connecting plate (42), springs (44), and connecting ropes (43) connected with the guide connecting plate (42) and the lower beam groove rails (41) respectively. In this way, the lower beam groove body (41) and the guide connecting plate (42) are elastically connected by the springs (44) and the connecting ropes (43) to always maintain tension. The guide connecting plate (42) is further connected with the end of the pull rope (1). In this way, when performing the folding work, the rotation of the winding rope device (3) first drives the driven gear (6) to rotate, and the ladder rope (3) turns the shutter (14) to the vertical state. With the further rotation of the winding rope device (3), the pull rope (1) drives the lower beam assembly to gradually rise, and the shutter (14) gradually falls into the U-shaped groove (48) of the lower beam groove rail (41) in sequence and is supported by the lower beam body (40). With the continuous rotation of the winding rope device (3), when the top end of the lower beam groove rail (41) hits the upper beam (15), the lower beam groove rail (41) stops rising, and the lower beam body (40) and the guide connecting plate (42) continue to rise in the U-shaped groove (48) under the continuous tightening force of the pull rope (1) until all the shutters (14) are collected and hit the upper beam (15). Conversely, when performing the unfolding work, the winding rope device (3) reverses and drives the driven gear (6) to reverse, so that the ladder rope (3) reverses to adjust the shutter (14) to the vertical position. At the same time, with the continuous descent of the pull rope (1), the lower beam body (40) returns to the bottom of the U-shaped groove (48) under the tension of the spring (44) and the connecting rope (43). At the same time, with the continuous action of the winding rope device (3), the pull rope (1) is further relaxed, and the shutter (14) is unfolded in sequence. In the above process, the uncollected shutter (14) is in the vertical state, and the collected shutter (14) is in the U-shaped groove (48), avoiding the friction of the shutter (14) with the glass in the rising and falling process.

11. A louver control mechanism for a louvered window according to claim 1, characterized by: The lower beam assembly is fixed, which comprises a lower beam body (40), a lower beam channel rail (41) and a fixed connecting plate (47), two ends of the fixed connecting plate (47) are fixedly connected with the lower beam body (40) and the lower beam channel rail (41) respectively, one end of the pull rope (1) is fixedly connected with the fixed connecting plate (47); the lower beam channel rail (41) comprises a U-shaped groove (48), and a first guide piece (45) and a second guide piece (46) are arranged at the opening at the top of the U-shaped groove (48), the outer sides of the first guide piece (45) and the second guide piece (46) are tightly attached to the two sides of the glass respectively, for guiding the louvers (14) into the U-shaped groove (48) of the lower beam channel rail (41) and preventing the louvers (14) from falling out of the U-shaped groove (48). When the lower beam assembly rises under the action of the pull rope (1), the louvers (14) above the lower beam assembly are in a vertical state under the action of the ladder rope (2) and are sequentially fallen into the U-shaped groove (48) and turned into a horizontal state, and rise together with the lower beam assembly until all the louvers (14) are neatly stacked and hit the upper beam (15), so that the contact between the louvers (14) and the glass and the additional resistance generated thereby are avoided.

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