CURTAIN CONTROLLER

Abstract

The invention discloses a curtain controller comprising a cover plate, a housing, a clutch head, a clutch device, a pushing device and a pull rope; wherein the pull rope drives the pushing device for forward movement to push the clutch device to be engaged with the clutch head; and after the pull rope is released, the pushing device moves backward to drive the clutch device to be disengaged with the clutch head and the pull rope is wound onto the pushing device. The curtain controller of the invention has a simple structure and few parts and components to reduce the production cost, and provides simple operation to facilitate maintenance and replacement when a fault occurs.

Claims

1. A curtain controller, comprising a cover plate (1) and a housing (2); the cover plate being connected with the housing to form a cavity; and further comprising a clutch head (3), a clutch device, a pushing device and a pull rope; a positioning table (31) being arranged at a middle part of the clutch head (3); the positioning table being provided with an annular slot (32); the clutch head (3) being capable of rotating freely on the housing by cooperation between a clamping ring (4) clamped on the annular slot (32) and the positioning table; toothed chutes (33) evenly distributed around an axis being arranged at a tail part of the clutch head (3); the pushing device and the clutch device being arranged in the cavity; the clutch device comprising a connecting shaft (5) and a guide pulley (6); the connecting shaft (5) being sleeved in the guide pulley (6); chutes (61) cooperating with the toothed chutes of the clutch head being arranged at the top of the guide pulley (6); one end of the pull rope being wound on the pushing device and the other end thereof passing through a rope outlet (21) arranged on the housing (2) to extend outside the housing; the pull rope driving the pushing device for forward movement to push the clutch device to be engaged with the clutch head; after the pull rope is released, the pushing device moving backward to drive the clutch device to be disengaged with the clutch head and the pull rope being wound onto the pushing device; the pushing device comprising a rope disc (7), a spiral spring (8) and a guide shaft (9); an annular boss (11) being arranged at a central area of an inner side of the cover plate (1), a fixing shaft (12) being arranged at a central position of the annular boss (11) and the fixing shaft (12) being provided with a clamping slot (121); the rope disc (7) being internally provided with a chamber (71); a winding slot (72) being arranged on an outer wall of the rope disc (7); protrusions (73) for limiting the guide pulley from sliding out of the rope disc during rotation being arranged at the top of the rope disc; a starting point of the spiral spring (8) being clamped at a position of the fixing shaft (12) near the cover plate (1) by the clamping slot (121); the coiled spiral spring (8) being placed in the chamber of the rope disc (7); and one end of the guide shaft (9) being fixed at the top of the fixing shaft (12) and the other end thereof being sleeved with the connecting shaft (5).

2. The curtain controller according to claim 1, wherein a side wall of the guide pulley (6) is provided with two symmetrical track slots (62) which are inclined downward from the top; the protrusions (73) are symmetrically distributed; and the protrusions (73) cooperate with the track slots (62) to limit the guide pulley (6) from sliding out of the rope disc.

3. The curtain controller according to claim 1, wherein a disc-shaped base (91) is arranged at the bottom of the guide shaft (9).

4. The curtain controller according to claim 1, wherein a circular table (51) is arranged at the bottom of the connecting shaft (5); the connecting shaft is internally provided with bar-shaped protrusions (52) evenly distributed around a central axis; the guide shaft (9) is provided with bar-shaped recesses (92) cooperating with the bar-shaped protrusions; a limiting table (63) is arranged at the top of the guide pulley (6); a clamping tongue (64) is arranged at the bottom of the guide pulley; and the connecting shaft (5) is clamped inside the guide pulley (6) by cooperation between the limiting table and the clamping tongue.

5. The curtain controller according to claim 3, wherein an anti-skid slot (65) is arranged at a position symmetrical to the clamping tongue inside the guide pulley; and the anti-skid slot is internally provided with a friction-enhancing gasket.

6. The curtain controller according to claim 1, further comprising a pull rope guide buckle (10); the pull rope guide buckle being internally provided with a rope guiding hole (101), and provided with clamping blocks (102) at two sides thereof; and the pull rope guide buckle being fixed on the rope outlet (21) of the housing by the clamping blocks.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0015] FIG. 1 is a schematic exploded view of a curtain controller;

[0016] FIG. 2 is a first partial schematic exploded view of the curtain controller; and

[0017] FIG. 3 is a second partial schematic exploded view of the curtain controller.

[0018] In the Figures: 1. cover plate; 2. housing; 3. clutch head; 4. clamping ring; 5. connecting shaft; 6. guide pulley; 7. rope disc; 8. spiral spring; 9. guide shaft; 10. pull rope guide buckle; 11. annular boss; 12. fixing shaft; 21. rope outlet; 31. positioning table; 32. annular slot; 33. toothed chute; 51. circular table; 52. bar-shaped protrusion; 61. chute; 62. track slot; 63. limiting table; 64. clamping tongue; 65. anti-skid slot; 71. chamber; 72. winding slot; 73. protrusion; 74. annular slot; 75. first notch; 76. second notch; 77. opening; 91. disc-shaped base; 92. bar-shaped recess; 93. raised bar; 101. rope guiding hole; 102. clamping block; 121. clamping slot.

DETAILED DESCRIPTION OF THE INVENTION

[0019] A preferred embodiment of the invention will be further described below with reference to the accompany drawings.

[0020] As shown in FIGS. 1 to 3, a curtain controller comprises a cover plate 1, a housing 2, a clutch head 3 connected with a winding shaft of a curtain, a clutch device, a pushing device, a pull rope and a pull rope guide buckle 10; wherein the cover plate is fixedly connected with the housing via screws, and the cover plate is connected with the housing to form a cavity.

[0021] An annular boss 11 is arranged at a central area of an inner side of the cover plate 1, the annular boss 11 is designed to prevent the rope disc from swinging during pulling, a fixing shaft 12 is arranged at a central position of the annular boss 11 and the fixing shaft 12 is provided with a clamping slot 121; and the clamping slot 121 extends all the way to the bottom of the fixing shaft from the top of the fixing shaft 12 such that the fixing shaft 12 is divided into two parts.

[0022] A positioning table 31 is arranged at a middle part of the clutch head 3; the positioning table is provided with an annular slot 32; the clutch head 3 is capable of rotating freely on the housing by cooperation between a clamping ring 4 clamped on the annular slot 32 and the positioning table; and toothed chutes 33 evenly distributed around an axis are arranged at a tail part of the clutch head 3.

[0023] The pushing device and the clutch device are arranged in the cavity.

[0024] The clutch device comprises a connecting shaft 5 and a guide pulley 6. A circular table 51 is arranged at the bottom of the connecting shaft 5; and the connecting shaft is internally provided with bar-shaped protrusions 52 evenly distributed around a central axis. Chutes 61 cooperating with the toothed chutes 33 of the clutch head 3 are arranged at the top of the guide pulley 6; a side wall of the guide pulley 6 is provided with two symmetrical track slots 62 which are inclined downward from the top; a limiting table 63 is arranged at the top of the guide pulley 6; a clamping tongue 64 is arranged at the bottom of the guide pulley; an anti-skid slot 65 is arranged at a position symmetrical to the clamping tongue inside the guide pulley 6; and the anti-skid slot is internally provided with a friction-enhancing gasket. The connecting shaft 5 is sleeved inside the guide pulley 6 by cooperation between the limiting table 63 and the clamping tongue 64.

[0025] The pushing device comprises a rope disc 7, a spiral spring 8 and a guide shaft 9. The rope disc 7 is internally provided with a chamber 71; a winding slot 72 is arranged on an outer wall of the rope disc 7; protrusions 73 for limiting the guide pulley from sliding out of the rope disc during rotation are arranged at the top of the rope disc; and the protrusions 73 are two symmetrically distributed protrusions. The protrusions 73 cooperate with the track slots 62 to limit the guide pulley 6 from sliding out of the rope disc. An annular slot 74 is also arranged between the chamber 71 and a housing of the rope disc; and a first notch 75 and a second notch 76 are arranged between a side wall of the annular slot and the chamber, wherein the first notch 75 is used for clamping an end point of the spiral spring and the second notch 76 is used for clamping a starting point of the pull rope. An opening 77 through which the pull rope can pass is arranged between an outer side wall of the annular slot 74 and the winding slot. A starting point 81 of the spiral spring 8 is clamped at a position of the fixing shaft 12 near the cover plate 1 by the clamping slot 121; the coiled spiral spring 8 is placed in the chamber of the rope disc 7; and an end point 82 of the spiral spring is clamped at the first notch 75 of the rope disc. A disc-shaped base 91 is arranged at the bottom of the guide shaft 9, and the design of the disc-shaped base can allow the spring to be pressed down, which prevents axial movement and also can prevent the guide shaft from sliding out of the rope disc. The guide shaft 9 is provided with bar-shaped recesses 92 cooperating with the bar-shaped protrusions 52 of the connecting shaft 5. A through hole fixedly clamped with the fixing shaft 12 is arranged on a central axis of the guide shaft; two symmetrical raised bars 93 are arranged on the through hole; and the raised bars 53 just can be clamped in the clamping slot 121 of the fixing shaft 12 when one end of the guide shaft 9 is connected with the top of the fixing shaft 12. The other end of the guide shaft is sleeved with the connecting shaft 5 by cooperation between the bar-shaped protrusions 52 and the bar-shaped recesses 92. The housing 2 is provided with a rope outlet 21; the pull rope guide buckle 10 is internally provided with a rope guiding hole 101, and provided with clamping blocks 102 at two sides thereof; and the pull rope guide buckle is fixed on the rope outlet 21 of the housing by the clamping blocks. The starting point of the pull rope is fixedly clamped by the second notch 76, then passes through the opening of the rope disc and then is wound onto the winding slot of the rope disc; and the other end of the pull rope passes through the rope guiding hole 101 of the pull rope guide buckle 10 to extend outside the housing. The pull rope drives the rope disc of the pushing device for forward movement to push the guide pulley of the clutch device to be engaged with the clutch head; and after the pull rope is released, the pushing device moves backward to drive the clutch device to be disengaged with the clutch head and the pull rope is wound onto the pushing device.

[0026] When a roller blind controller is assembled, the guide shaft 9 first passes through the guide pulley 6 and then is placed inside the rope disc 7, protrusions 33 of the rope disc 3 need to slide into the track slots 62 at an outer side of the guide pulley during placement, and then the wound spiral spring 8 is placed in the chamber of the rope disc 7, wherein the end point 82 of the spiral spring 8 is clamped on the first notch 75; and then the starting point 81 of the spiral spring 8 is clamped in the clamping slot 121 of the fixing shaft 12 of the cover plate. The clutch head 3 passes through the housing 2, and the clutch head is clamped with the housing by the clamping ring 4. After connection, the clutch head 3 is tested by rotation to ensure that the clutch head is capable of rotating freely around an axis on the housing 2. One end of the pull rope is twisted into a joint, then placed in the second notch 76 and then wound onto the winding slot through the opening 77. The other end of the pull rope passes through the rope guiding hole 101 of the pull rope buckle 10, and then the pull rope buckle 10 is clamped at the rope outlet 21 of the housing by the clamping blocks. Subsequently, the housing is fixedly connected with the cover plate via screws. Finally, the curtain controller is mounted at a corresponding position to control the curtain.