Horizontal folding and automatic descending type double-layer curtain system controlled by single-cycle pull beads

Abstract

The invention discloses a horizontal folding and automatic descending type double-layer curtain system controlled by single-cycle pull beads. The system comprises a top rail, a bottom rail, a middle rail, a first curtain, a second curtain, the pull beads, a second curtain lifting rope, a first curtain lifting rope and a control assembly. The control assembly is arranged in the top rail, a pull bead is wound at one end of the control assembly, one end of the second curtain lifting rope and one end of the first curtain lifting rope are wound in the control assembly, the middle rail is located below the top rail, the bottom rail is located below the middle rail, and the bottom rail is located below the bottom rail. The second curtain is installed between the bottom rail and the middle rail in a folded mode, and the first curtain is installed between the middle rail and the top rail in a folded mode. Through action cooperation of the control assembly, the rope wheel and the pull bead, single-rope control over the curtain is achieved, single-cycle actions of first curtain unfolding, second curtain unfolding, second curtain storage and first curtain storage are achieved, and compared with an existing curtain, the curtain is simpler and more attractive, operation is convenient, and the integration degree is high.

Description

Technical Field

[0001] The present invention relates to the field of curtains, and in particular to a horizontally folding and automatically descending double-layer curtain system controlled by a single-loop pull bead. Background Art

[0002] Existing curtains are usually provided with two pull beads, one of which is used to control the expansion of the curtains, and the other is used to rotate the curtain blades to adjust the shading degree accordingly; or the other pull bead is used to control the expansion and closing of the gauze curtain; and because the curtains are very high, the user needs to pull the pull beads from the bottom of the curtains, so that the pull beads of existing curtains are even very long, and the two pull beads are very easy to get entangled with each other, making the curtains inconvenient to use, and the appearance is not high, and not simple enough. Summary of the Invention

[0003] In view of this, the object of the present invention is to provide a single-loop pull-bead controlled horizontal folding automatic descending double-layer curtain system to solve the above-mentioned problems.

[0004] In order to solve the above technical problems, the technical solution of the present invention is: a single-cycle pull-bead controlled horizontal folding and automatic descending double-layer curtain system, comprising a top rail, a bottom rail, a middle rail, a first curtain, a second curtain, a pull-bead, a second curtain hanging cord, a first curtain hanging cord, and a control assembly; the control assembly is arranged inside the top rail, one end of the control assembly is wound with a pull-bead, one end of the second curtain hanging cord and the first curtain hanging cord are wound inside the control assembly, the other end of the second curtain hanging cord is fixedly mounted to the bottom rail, and the first curtain hanging cord is fixedly mounted to the middle rail, the middle rail is located below the top rail, the bottom rail is located below the middle rail, the second curtain is folded and installed between the bottom rail and the middle rail, and the first curtain is folded and installed between the middle rail and the top rail; by pulling a single pull-bead, the second curtain hanging cord and the first curtain hanging cord in the control assembly are driven to synchronously release, synchronously retract, independently release, and independently retract, thereby realizing the deployment and storage of the first curtain and the deployment and storage of the second curtain.

[0005] Furthermore, the control assembly includes a first curtain rotating shaft, a rope pulley, a second curtain rotating shaft, a reversing component, a linkage component, a rope brake component, a damping component, a locking component and an end limit component; the second curtain rotating shaft and the first curtain rotating shaft both pass through the linkage component, at least two rope brake components, a damping component and a locking component; one end of the second curtain rotating shaft is connected to the end limit component, and the other end is connected to the first output end of the reversing component; one end of the first curtain is hinged to the top rail, and the other end is connected to the second output end of the reversing component; the input end of the reversing component is connected to the rope pulley; the control assembly includes a first curtain unfolded state, a first curtain stored state When the first curtain and the second curtain are both in the retracted state, when the pull bead is pulled downward for the first time, the control assembly enters the first curtain extended state, the reversing component outputs the torque to the first curtain rotating shaft through the second output end, and the linkage component is in the state of linkage between the first curtain rotating shaft and the second curtain rotating shaft. At this time, the second curtain hanging rope and the first curtain hanging rope are both in the rope-releasing state, the bottom rail and the middle rail both descend, and the first curtain is unfolded as the middle rail descends; the first curtain is unfolded to the maximum range, when the pull bead is pulled downward in the opposite direction for the first time, it enters the second curtain extended state, and the reversing component twists the rope through the first output end to release the rope. The output end is output to the second curtain rotating shaft, and the linkage component is in a state where the first curtain rotating shaft and the second curtain rotating shaft are disconnected. The first curtain rotating shaft is locked by the locking component, so that the bottom rail is suspended. At this time, the second curtain rotating shaft rotates in the opposite direction, so that the rope brake component reels the second curtain hanging rope, so that the middle rail rises, thereby making the second curtain unfold and the first curtain retract; after rising to a preset height, when the pull bead is released, the second curtain rotating shaft is locked by the locking component; when the pull bead is pulled forward for the second time, the locking component can be reversed to release the locking state of the second curtain rotating shaft, thereby entering the second curtain storage state, at this time the first curtain rotating shaft The second curtain rotating shaft continues to rotate in the opposite direction, thereby releasing the first curtain hanging rope, causing the middle rail to drop, thereby causing the second curtain to be retracted and the first curtain to be unfolded; when the second curtain is lowered to the maximum range, the end limit assembly pushes the second curtain rotating shaft to move radially, causing the reversing assembly to switch the torque from the first output end to the second output end, so that when the pull bead is pulled in the opposite direction for the second time, the first curtain enters the retracted state, and the linkage assembly is at a turntable where the first curtain rotating shaft and the second curtain rotating shaft are linked. At this time, the second curtain hanging rope and the first curtain hanging rope are in the rope-retracting state, causing the bottom rail and the middle rail to rise, and the first curtain to retract as the middle rail rises.

[0006] Furthermore, the reversing assembly includes a first housing, a reduction gear set, a reversing input shaft, a first rotating disk, a second rotating disk, a first gear, a second gear, a first output shaft sleeve, and a second output shaft sleeve; the rope pulley is hingedly mounted in the first housing, and a third gear is provided beside the rope pulley, the input end of the reduction gear set is meshed with the third gear, and the output end of the reduction gear set is fixedly connected to the reversing input shaft; the reversing input shaft, the first rotating disk, the first gear and the first output shaft sleeve are arranged on the extension line of the axis of the second curtain rotating shaft, and the second gear and the second output shaft sleeve are arranged on the extension line of the axis of the first curtain rotating shaft; a first axial groove is provided on the reversing input shaft, the first rotating disk is limited in the first axial groove, and the first A second rotating disk is fixedly mounted on the output shaft sleeve, a limiting shaft sleeve is provided on the second rotating disk, a push plate parallel to the second rotating disk is sleeved on the limiting shaft sleeve, and a spring is provided between the push plate and the second rotating disk; the first gear is hingedly mounted on one end of the reversing input shaft close to the reduction gear group; an elastic limiting slider is provided on the first housing at a position corresponding to the first rotating disk, and a first limiting track and a second limiting track are provided on the first rotating disk corresponding to the elastic limiting slider; wedge-shaped protrusions are arranged in an array on both sides of the first rotating disk, a wedge-shaped protrusion is also provided on the side of the second rotating disk close to the first rotating disk, and a wedge-shaped protrusion is also provided on the side of the first gear close to the first rotating disk; the second gear is meshed and installed with the first gear.

[0007] Furthermore, the locking assembly includes a second shell and an inner sleeve, an outer sleeve, a movable ball and a buffer spring which are mirror-imaged in the second shell, the inner sleeve being hingedly mounted on the second shell, the outer sleeve being sleeved on the inner sleeve, one end of the buffer spring being arranged on the inner sleeve, and the other end being sleeved and fixed on the outer sleeve, and the outer sleeve can only rotate in one direction relative to the inner sleeve; a first circulating limit groove for accommodating the movable ball is provided on the circumferential surface of the outer sleeve; a linear groove for accommodating the movable ball is provided in the second shell, so that half of the movable ball is located in the first circulating limit groove and the other half is located in the linear groove; the circulating groove includes a forward pulling circulating section, a reverse locking section and a reverse pulling unlocking section; when the pull bead is pulled, the outer sleeve and the inner sleeve rotate along with the second curtain rotating shaft or the first curtain rotating shaft, and at this time the movable ball is always in In the forward circulation section, when the pulling action is stopped or the bead is released, the weight of the bottom rail and the middle rail causes the second curtain rotating shaft and the first curtain rotating shaft to rotate in the opposite direction. At this time, the movable ball moves in the opposite direction and enters the reverse locking section, thereby preventing the second curtain rotating shaft and the first curtain rotating shaft from continuing to rotate; when the bead is continuously pulled in the opposite direction, the movable ball enters the reverse pull unlocking section from the reverse locking section; thereby, the outer sleeve can only rotate in one direction relative to the inner sleeve, thereby realizing the reverse rotation of the first curtain rotating shaft and the second curtain rotating shaft; when it is necessary to continue to pull the bead forward, it is necessary to first pull the bead backward so that the movable ball enters the reverse pull unlocking section from the reverse locking section, and then continue to pull the bead forwardly downward so that the movable ball returns from the reverse pull unlocking section to the forward pulling circulation section, thereby realizing the continued forward rotation of the first curtain rotating shaft and the second curtain rotating shaft.

[0008] Furthermore, the linkage assembly includes a third shell, a sliding plate, a return spring, a hinge seat, a linkage sleeve, a swing plate, a fourth gear, a fifth gear, a lifting top rod, and a sixth gear; the inner bottom of the third shell is provided with a sliding groove in the radial direction toward the second curtain rotation axis, the sliding plate limit is set in the sliding groove, the inner upper limit of the third shell is provided with a lifting top rod that can only move up and down, the bottom of the lifting top rod abuts against the swing rod, the bottom of the top rail is provided with a first wire hole corresponding to the position of the lifting top rod, the bottom of the third shell is provided with a second wire hole corresponding to the rope brake assembly, the sliding plate is provided with a third wire hole that is staggered with the first wire hole, and one end of the second curtain hanging rope and the first curtain hanging rope pass through the first wire hole in sequence. , the second wire passing hole and the third wire passing hole are then wound on the rope brake assembly; the return spring is arranged between the sliding plate and the third shell, and the first wire passing hole is covered with an elastic diaphragm that protrudes in the corresponding direction when the second curtain hanging rope and the first curtain hanging rope are pulled, and the bottom of the lifting top rod abuts against the elastic diaphragm, the fourth gear is fixedly mounted on the linkage sleeve, the fifth gear is hingedly mounted on the swing pendulum and meshes with the fourth gear, and the sixth gear is sleeved on the second curtain rotating shaft. When the swing plate swings toward the second curtain rotating shaft, the fifth gear meshes with the sixth gear. When the lifting top rod rises as the elastic diaphragm protrudes upward and pushes up the swing plate, the fifth gear and the sixth gear are disengaged.

[0009] Furthermore, the rope brake assembly includes a brake drum, a rotating drum, a brake sleeve and a brake bump; the brake drum is arranged parallel to the rotating drum; a section of the brake sleeve enters one end of the brake drum, and the brake drum is hinged; an inclined groove is provided at one end of the brake drum close to the brake sleeve; a wedge-shaped brake block is provided in a ring array at one end of the brake sleeve away from the brake sleeve, and a brake limit block is provided at the other end corresponding to the inclined groove; the brake bump is provided on the third shell, and the brake bump is also spaced apart from the wedge-shaped brake block.

[0010] Furthermore, the brake drum and the rotating drum are arranged in a conical barrel shape.

[0011] Furthermore, the cross-sections of the second curtain rotation axis and the first curtain rotation axis are polygonal.

[0012] Furthermore, the end limit assembly includes a fourth housing, a first helical gear, a second helical gear, an externally threaded sleeve and an internally threaded sleeve; one end of the externally threaded sleeve is hinged to the fourth housing, and the other end is hinged to the screw, one end of the first helical gear is hinged to the fourth housing, the second helical gear is arranged beside the first helical gear and meshes with the first helical gear, the second helical gear intersects with the axis of the first helical gear, and both ends of the second helical gear are hinged to and limited by the fourth housing; the fourth housing is provided with a second limiting groove corresponding to the externally threaded sleeve, and the internally threaded sleeve is sleeved on the externally threaded sleeve and extends outward into the second limiting groove.

[0013] The technical effect of the present invention is mainly reflected in: through the coordination of the control assembly with the pulley and the pull bead, a single rope is used to control the curtain to achieve a single cycle of unfolding the first curtain, unfolding the second curtain, folding the second curtain and folding the first curtain. Compared with existing curtains, it is simpler, more beautiful, easier to operate and has a high degree of integration. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a front view of the present invention;

[0015] Figure 2 It is a top sectional view of the control assembly;

[0016] Figure 3 It is a top sectional view of the reversing assembly;

[0017] Figure 4 is a side sectional view of the locking assembly;

[0018] Figure 5 A front view of the second housing concealing the locking assembly;

[0019] Figure 6 A top view of the second housing is hidden for the locking assembly;

[0020] Figure 7 a rear mirror image of the second housing concealing the locking assembly;

[0021] Figure 8 a bottom view of the second housing concealing the locking assembly;

[0022] Figure 9 is a side sectional view of the linkage assembly;

[0023] Figure 10 Top view of the linkage assembly and the rope brake assembly

[0024] Figure 11 A top view of the end stop assembly.

[0025] The accompanying drawings are marked as follows: 1-top rail, 11-first wire hole, 2-bottom rail, 3-middle rail, 4-first curtain, 5-second curtain, 6-pull bead, 7-second curtain hanging rope, 8-first curtain hanging rope, 9-control assembly, 91-first curtain rotating shaft, 92-pulley, 93-second curtain rotating shaft, 94-reversing assembly, 941-first housing, 9411-elastic limiting slider, 942-reduction gear set, 943-reversing input shaft, 944-first A rotating disk, 9441-limiting sleeve, 9442-push plate, 9443-first limiting rail, 9444-second limiting rail, 9445-wedge-shaped protrusion, 945-second rotating disk, 946-first gear, 947-second gear, 948-first output sleeve, 949-second output sleeve, 950-third gear, 95-linkage assembly, 951-third housing, 9511-second wire hole, 952-sliding plate, 9521- The third wire hole, 953-reset spring, 954-hinge seat, 955-linkage sleeve, 956-swing plate, 957-fourth gear, 958-fifth gear, 959-lifting top rod, 960-sixth gear, 96-rope brake assembly, 961-brake drum, 962-rotating drum, 963-brake sleeve, 964-brake bump, 9611-tilted groove, 9631-wedge brake block, 9632-brake limit block, 97-block Ni assembly, 98-locking assembly, 981-second housing, 982-inner sleeve, 983-outer sleeve, 984-movable ball, 985-buffer spring, 986-first limit groove, 9811-linear groove, 99-end limit assembly, 991-fourth housing, 992-first bevel gear, 993-second bevel gear, 994-externally threaded sleeve, 995-internally threaded sleeve, A-forward pull cycle section, B-reverse locking section, C-reverse pull unlocking section. DETAILED DESCRIPTION

[0026] The specific embodiments of the present invention are further described below in conjunction with the accompanying drawings to make the technical solutions of the present invention easier to understand and grasp.

[0027] In this embodiment, it should be understood that the terms "middle", "upper", "lower", "top", "right", "left end", "above", "back", "middle", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0028] In addition, in this specific embodiment, if the connection or fixing method between components is not specifically described, the connection or fixing method can be through bolt fixing or pin fixing, or pin shaft connection, etc. commonly used in the prior art, so it will not be described in detail in this embodiment.

[0029] The present invention provides a double-layer curtain system with single-loop pull-bead control and horizontal folding and automatic descending. Figure 1-2 As shown, it includes a top rail 1, a bottom rail 2, a middle rail 3, a first curtain, a second curtain, a bead 6, a second curtain hanging rope 7, a first curtain hanging rope 8, and a control assembly 9; the control assembly 9 is arranged inside the top rail 1, one end of the control assembly 9 is wrapped with a bead 6, one end of the second curtain hanging rope 7 and the first curtain hanging rope 8 is rolled up in the control assembly 9, the other end of the second curtain hanging rope 7 is fixedly installed with the bottom rail 2, and the first curtain hanging rope 8 is fixedly installed with the middle rail 3, the middle rail 3 is located below the top rail 1, and the bottom rail 2 is located below the middle rail 3, the second curtain is folded and installed between the bottom rail 2 and the middle rail 3, and the first curtain is folded and installed between the middle rail 3 and the top rail 1; by pulling a separate bead 6 to drive the control assembly 9, the second curtain hanging rope 7 and the first curtain hanging rope 8 can be synchronously released, synchronously collected, released and collected separately, thereby realizing the deployment and storage of the first curtain and the deployment and storage of the second curtain;

[0030] In this embodiment, the first curtain and the second curtain are one of a gauze curtain and a blackout curtain.

[0031] The control assembly 9 includes a first curtain rotating shaft 91, a rope pulley 92, a second curtain rotating shaft 93, a reversing component 94, a linkage component 95, a rope brake component 96, a damping component 97, a locking component 98 and an end limit component 99; the second curtain rotating shaft 93 and the first curtain rotating shaft 91 both pass through the linkage component 95, at least two rope brake components 96, the damping component 97 and the locking component 98; one end of the second curtain rotating shaft 93 is connected to the end limit component 99, and the other end is connected to the first output end of the reversing component 94; one end of the first curtain is hinged to the top rail 1, and the other end is connected to the second output end of the reversing component 94; the input end of the reversing component 94 is connected to the rope pulley 92; the damping component 97 is used The invention is used to slow down the rotation rate of the second curtain rotating shaft 93 and the first curtain rotating shaft 91, so as to prevent the bottom rail 2 and the middle rail 3 from falling too quickly; the rope pulley 92 is used to convert the pulling action of the bead 6 into the axial rotation of the rope pulley 92; the reversing component 94 is used to control the torque output switching of the rope pulley 92 on the second curtain rotating shaft 93 and the first curtain rotating shaft 91; the rope brake component 96 is used to roll up or release the second curtain hanging rope 7 and the first curtain hanging rope 8; the linkage component 95 is used to control the synchronous rotation or independent rotation of the second curtain rotating shaft 93 and the first curtain rotating shaft 91; the locking component 98 is used to lock the naturally falling bottom rail 2 and the middle rail 3, so as to maintain the height of the bottom rail 2 and the middle rail 3, and the unlocking is required by reverse rotation;

[0032] The control assembly 9 includes a first curtain unfolding state, a first curtain stowing state, a second curtain unfolding state and a second curtain stowing state; when the first curtain and the second curtain are both in the stowed state, when the pull bead 6 is pulled downward for the first time, the control assembly 9 enters the first curtain unfolding state, the reversing component 94 outputs the torque to the first curtain rotating shaft 91 through the second output end, and the linkage component 95 is in a state of linkage between the first curtain rotating shaft 91 and the second curtain rotating shaft 93. At this time, the second curtain hanging rope 7 and the first curtain hanging rope 8 are both in the rope-releasing state, the bottom rail 2 and the middle rail 3 are both lowered, and the first curtain is lowered as the middle rail 3 is lowered. When the first curtain is unfolded to the maximum range and the pull bead 6 is pulled down in the reverse direction for the first time, the second curtain enters the unfolded state. The reversing component 94 outputs the twist to the second curtain rotating shaft 93 through the first output end. The linkage component 95 is in a state where the first curtain rotating shaft 91 and the second curtain rotating shaft 93 are disconnected. The first curtain rotating shaft 91 is locked by the locking component 98, so that the bottom rail 2 is suspended. At this time, the second curtain rotating shaft 93 rotates in the opposite direction, so that the rope brake component 96 reels the second curtain hanging rope 7, so that the middle rail 3 rises, thereby causing the second curtain to unfold and the first curtain to retract. When it rises to the preset After the height is reached, when the bead 6 is released, the second curtain rotating shaft 93 is locked by the locking component 98; when the bead 6 is pulled forward for the second time, the locking component 98 can be reversed to release the locking state of the second curtain rotating shaft 93, thereby entering the second curtain storage state. At this time, the second curtain rotating shaft 93 continues to rotate in the opposite direction, thereby releasing the first curtain hanging rope 8, causing the middle rail 3 to drop, thereby causing the second curtain to be stored and the first curtain to be unfolded; when the second curtain is lowered to the maximum range, the end limit component 99 pushes the second curtain rotating shaft 93 to move radially, so that the reversing component 94 switches the torque from the first output end To the second output end, when the pull bead 6 is pulled in the opposite direction for the second time, the first curtain enters the storage state. At this time, the linkage component 95 is on a turntable where the first curtain rotating shaft 91 and the second curtain rotating shaft 93 are linked. At this time, the second curtain hanging rope 7 and the first curtain hanging rope 8 are in the rope-collecting state, so that the bottom rail 2 and the middle rail 3 both rise, and the first curtain contracts as the middle rail 3 rises; through the coordination of the control assembly 9 with the pulley 92 and the pull bead 6, a single-rope control curtain is realized to realize the first curtain unfolding, the first curtain folding, the second curtain unfolding and the second curtain folding. Compared with the existing curtains, it is more simple, beautiful, easy to operate and has a high degree of integration.

[0033] In this embodiment, the pull beads 6 can be replaced by pull ropes.

[0034] Furthermore, if Figure 3As shown, the reversing assembly 94 includes a first housing 941, a reduction gear set 942, a reversing input shaft 943, a first rotating disk 944, a second rotating disk 945, a first gear 946, a second gear 947, a first output shaft sleeve 948, and a second output shaft sleeve 949; the rope pulley 92 is hingedly mounted in the first housing 941, and a third gear 950 is provided on the side of the rope pulley 92, the input end of the reduction gear set 942 is meshed with the third gear 950, and the output end of the reduction gear set 942 is fixedly connected to the reversing input shaft 943; the reversing input shaft 943, the first rotating disk 944, the first gear 946 and the first output shaft The sleeve 948 is arranged on the extension line of the axis of the second curtain rotating shaft 93, and the second gear 947 and the second output shaft sleeve 949 are arranged on the extension line of the axis of the first curtain rotating shaft 91; the reversing input shaft 943 is provided with a first axial groove, the first rotating disk 944 is limitedly set in the first axial groove, the second rotating disk 945 is fixedly installed on the first output shaft sleeve 948, and the second rotating disk 945 is provided with a limiting shaft sleeve 9441. The limiting shaft sleeve 9441 is sleeved with a push plate 9442 parallel to the second rotating disk 945, and a spring is provided between the push plate 9442 and the second rotating disk 945; the reversing output The first gear 946 is hingedly mounted on one end of the input shaft 943 near the reduction gear set 942; an elastic limiting slider 9441 is provided on the first housing 941 at a position corresponding to the first rotating disk 944, and a first limiting track 9443 and a second limiting track 9444 are provided on the first rotating disk 944 corresponding to the elastic limiting slider 9441; wedge-shaped protrusions 9445 are arranged in an array on both sides of the first rotating disk 944, and a wedge-shaped protrusion 9445 is also provided on the side of the second rotating disk 945 near the first rotating disk 944. A wedge-shaped protrusion 9445 is also provided on the side of the first gear 946 near the first rotating disk 944. The second gear 947 is meshed with the first gear 946; when the first rotating disk 944 receives a radial thrust, the elastic limiting slider 9441 is deformed downward, thereby causing the first rotating disk 944 to move axially, so that the elastic limiting slider 9441 changes from the corresponding first limiting track 9443 to the second limiting track 9444, or from the corresponding second limiting track 9444 to the first limiting track 9443; the wedge-shaped protrusion 9445 is provided with an inclined surface and a right-angle surface. When the first rotating disk 944 rotates unidirectionally, the inclined surface between the wedge-shaped protrusion 9445 on the second rotating disk 945 and the inclined surface between the first rotating disk 944 can generate radial thrust;The first rotating disk 944 is caused to move laterally and approach the first gear 946. At this time, the wedge-shaped protrusion 9445 on the other side of the first rotating disk 944 abuts against the right-angled surface of the wedge-shaped protrusion 9445 on the first gear 946, thereby realizing that the first rotating disk 944 drives the first gear 946 to rotate; and when the first rotating disk 944 rotates in the opposite direction, the inclined surfaces of the wedge-shaped protrusion 9445 on the first rotating disk 944 and the first gear 946 abut against the inclined surfaces, so that the first rotating disk 944 moves radially toward the second rotating disk 945; the second rotating disk 945 is also provided with a second axial groove. When the first rotating disk 944 approaches the second rotating disk 945, the first rotating disk 944 is rotated in the opposite direction. One end of 944 enters the second axial groove, so that when the first rotating disk 944 rotates in the opposite direction, the inclined surfaces of the wedge-shaped protrusion 9445 abut against each other, but the first rotating disk 944 abuts against the second axial groove, preventing the first rotating disk 944 from moving axially. When the second curtain falls to the lowest point, the end stop assembly 99 pushes the second curtain rotating shaft 93 to move radially toward the second rotating disk 945, causing the push plate 9442 on the second rotating disk 945 to push the first rotating disk 944 to move radially and disengage from the second axial groove. At this time, the thrust generated by the abutment of the inclined surfaces of the wedge-shaped protrusion 9445 causes the first rotating disk 944 to move toward the first gear 946.

[0035] Furthermore, if Figure 4-8As shown, the locking assembly 98 includes a second housing 981 and an inner sleeve 982, an outer sleeve 983, a movable ball 984 and a buffer spring 985 which are mirror-imaged in the second housing 981. The inner sleeve 982 is hingedly mounted on the second housing 981, and the outer sleeve 983 is sleeved on the inner sleeve 982. One end of the buffer spring 985 is arranged on the inner sleeve 982, and the other end is sleeved and fixed on the outer sleeve 983. The outer sleeve 983 can only rotate in one direction relative to the inner sleeve 982. The circumferential surface of the movable ball 984 is provided with a first limiting groove 986 for accommodating the movable ball 984; the second shell 981 is provided with a linear groove 9811 for accommodating the movable ball 984, so that half of the movable ball 984 is located in the first limiting groove 986 and the other half is located in the linear groove 9811; the circulating groove includes a positive pull circulating section A, a reverse locking section B and a reverse pull unlocking section C; when the pull bead 6 is pulled, the outer sleeve 983 and the inner sleeve 982 are moved along with the second curtain rotating shaft 93 or the first window The curtain rotating shaft 91 rotates, and at this time the movable ball 984 is always located in the forward circulation section. When the pulling action is stopped or the bead 6 is released, the weight of the bottom rail 2 and the middle rail 3 causes the second curtain rotating shaft 93 and the first curtain rotating shaft 91 to rotate in the opposite direction. At this time, the movable ball 984 moves in the opposite direction and enters the reverse locking section B, thereby preventing the second curtain rotating shaft 93 and the first curtain rotating shaft 91 from continuing to rotate; when the bead 6 is continuously pulled in the reverse direction, the movable ball 984 enters the reverse pull unlocking section from the reverse locking section B. C; thereby, the outer sleeve 983 can only rotate in one direction relative to the inner sleeve 982, thereby realizing the reverse rotation of the first curtain rotating shaft 91 and the second curtain rotating shaft 93; when it is necessary to continue to pull the pull bead 6 in the forward direction, it is necessary to first pull the pull bead 6 in the reverse direction, so that the movable ball 984 enters the reverse pull unlocking section C from the reverse locking section B, and then continue to pull the pull bead 6 downward in the forward direction, so that the movable ball 984 returns from the reverse pull unlocking section C to the forward pull cycle section A, thereby realizing the continued forward rotation of the first curtain rotating shaft 91 and the second curtain rotating shaft 93.

[0036] Furthermore, if Figure 9-10As shown, the linkage assembly 95 includes a third shell 951, a sliding plate 952, a return spring 953, a hinge seat 954, a linkage sleeve 955, a swing plate 956, a fourth gear 957, a fifth gear 958, a lifting push rod 959, and a sixth gear 960; the inner bottom of the third shell 951 is provided with a sliding groove in the radial direction toward the second curtain rotation shaft 93, the sliding plate 952 is limited in the sliding groove, and the inner upper limit of the third shell 951 is provided with a lifting push rod 959 that can only move up and down, the bottom of the lifting push rod 959 is in contact with the swing plate 956, and the bottom of the top rail 1 is provided with a first wire hole corresponding to the position of the lifting push rod 959 11, the bottom of the third shell 951 is provided with a second wire hole 9511 corresponding to the rope brake assembly 96, and the sliding plate 952 is provided with a third wire hole 9521 which is staggered with the first wire hole 11. One end of the second curtain hanging rope 7 and the first curtain hanging rope 8 passes through the first wire hole 11, the second wire hole 9511 and the third wire hole 9521 in sequence and is then wound on the rope brake assembly 96; the return spring 953 is provided between the sliding plate 952 and the third shell 951. When the second curtain hanging rope 7 and the first curtain hanging rope 8 are in a straightened state, the tension generated pushes the sliding plate 952 to compress the return spring 953, so that the second wire hole 95 11 is aligned with the third wire hole 9521, and the hinge seat 954 is used to generate a swinging force on the swing plate 956, so that the fifth gear 958 is disengaged from the sixth gear 960. The first wire hole 11 is covered with an elastic diaphragm that protrudes in the corresponding direction when the second curtain hanging rope 7 and the first curtain hanging rope 8 are pulled. The bottom of the lifting top rod 959 abuts against the elastic diaphragm. The fourth gear 957 is fixedly installed on the linkage sleeve 955. The fifth gear 958 is hingedly installed on the swing pendulum and meshes with the fourth gear 957. The sixth gear 960 is sleeved on the second curtain rotating shaft 93. When the swing plate 956 is moved toward the second curtain rotating shaft When the first curtain is unfolded, the second curtain rope 7 and the first curtain rope 8 are in the rope-releasing state, so that the lifting rod 959 descends, and the fifth gear 958 and the sixth gear 960 remain in meshing. When the second curtain is unfolded, the second curtain rope 7 remains stationary, and the first curtain rope 8 is in the rope-retracting state, so that the lifting rod 959 ascends and lifts the swing plate 956, so that the fifth gear 958 and the sixth gear 960 are disengaged.In the second curtain storage state, the second curtain hanging cord 7 remains stationary, while the first curtain hanging cord 8 is in the rope-releasing state. However, at this time, the second curtain rotating shaft 93 rotates clockwise, and the meshing torque between the fifth gear 958 and the sixth gear 960 is less than the torque driving the first curtain rotating shaft 91, so that the fifth gear 958 receives the thrust of the sixth gear 960 and rotates around the first curtain rotating shaft 91. Moreover, due to gravity, the fifth gear 958 hits the sixth gear 960, resulting in the effect that only the second curtain rotating shaft 93 rotates. In the first curtain storage state, the second curtain hanging cord 7 and the first curtain hanging cord 8 are in the rope-retracting state. Although the meshing force of the fifth gear 958 and the sixth gear 960 is greater than the force of the lifting rod 959, the fifth gear 958 and the sixth gear 960 remain meshed.

[0037] Furthermore, if Figure 10 As shown, the rope brake assembly 96 includes a brake drum 961, a rotating drum 962, a brake sleeve 963 and a brake bump 964; the brake drum 961 is arranged in parallel with the rotating drum 962; a section of the brake sleeve 963 enters one end of the brake drum 961, and the brake drum 961 is hinged; an inclined groove 9611 is provided at one end of the brake drum 961 close to the brake sleeve 963; a wedge-shaped brake block 9631 is provided in a circular array at one end of the brake sleeve 963 away from the brake sleeve 963, and a brake limit block 9632 is provided at the other end corresponding to the inclined groove 9611; the brake The car bump 964 is arranged on the third shell 951, and the brake bump 964 is also spaced apart from the wedge-shaped brake block 9631. After the action of pulling the bead 6 is completed, the bottom rail 2 and the middle rail 3 pull the second curtain hanging rope 7 and the first curtain hanging rope 8 downward, so that the brake drum 961 rotates actively, thereby causing the inclined groove 9611 to move relative to the brake bump 964, thereby pushing the brake bump 964 and the brake shaft sleeve 963 to move radially, and then the wedge-shaped brake block 9631 on the brake shaft sleeve 963 abuts against the brake bump 964, so that the brake drum 961 stops rotating, thereby realizing automatic braking when the curtain falls.

[0038] Furthermore, the brake drum 961 and the rotating drum 962 are arranged in a cone barrel shape, which facilitates the second curtain hanging rope 7 and the first curtain hanging rope 8 to be wound on the brake drum 961.

[0039] Furthermore, the cross-sections of the second curtain rotating shaft 93 and the first curtain rotating shaft 91 are polygonal. In this embodiment, the cross-sections of the second curtain rotating shaft 93 and the first curtain rotating shaft 91 are hexagonal.

[0040] Furthermore, if Figure 11As shown, the end limit assembly 99 includes a fourth shell 991, a first bevel gear 992, a second bevel gear 993, an externally threaded sleeve 994 and an internally threaded sleeve 995; one end of the externally threaded sleeve 994 is hinged to the fourth shell 991, and the other end is hinged to the screw, one end of the first bevel gear 992 is hinged to the fourth shell 991, the second bevel gear 993 is arranged beside the first bevel gear 992, and is meshed with the first bevel gear 992, the second bevel gear 993 intersects with the axis of the first bevel gear 992, and both ends of the second bevel gear 993 are hinged to the fourth shell 991 and limited; the fourth shell 991 is provided with a second limit groove corresponding to the externally threaded sleeve 994 The internally threaded sleeve 995 is sleeved on the externally threaded sleeve 994 and extends outward into the second limiting groove. The externally threaded sleeve 994 rotates with the second curtain rotating shaft 93, and the internally threaded sleeve 995 moves toward the first bevel gear 992 under the transmission action of the thread. When the internally threaded sleeve 995 abuts against the first bevel gear 992, the second curtain is retracted to the minimum range, and at this time the internally threaded sleeve 995 and the externally threaded sleeve 994 together generate torque on the first bevel gear 992, and the first bevel gear 992 generates torque on the second bevel gear 993. Since the second bevel gear 993 is limited, the first bevel gear 992 is pushed in the opposite direction toward the externally threaded sleeve 994 and the second curtain rotating shaft 93 to generate radial thrust.

[0041] The technical effect of the present invention is mainly reflected in: through the coordination of the control assembly with the pulley and the pull bead, a single rope is used to control the curtain to achieve a single cycle of unfolding the first curtain, unfolding the second curtain, folding the second curtain and folding the first curtain. Compared with existing curtains, it is simpler, more beautiful, easier to operate and has a high degree of integration.

[0042] Of course, the above are only typical examples of the present invention. In addition, the present invention may also have many other specific implementation methods. Any technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the present invention.

Claims

1. A single-loop pull-bead controlled horizontal folding automatic descending double-layer curtain system, characterized in that: The curtain comprises a top rail, a bottom rail, a middle rail, a first curtain, a second curtain, a bead, a first curtain hanging rope, a second curtain hanging rope and a control assembly; the control assembly is arranged inside the top rail, a bead is wound around one end of the control assembly, one end of the second curtain hanging rope and the first curtain hanging rope are rolled up in the control assembly, the other end of the second curtain hanging rope is fixedly mounted to the bottom rail, the first curtain hanging rope is fixedly mounted to the middle rail, the middle rail is located below the top rail, the bottom rail is located below the middle rail, the second curtain is folded and installed between the bottom rail and the middle rail, and the first curtain is folded and installed between the middle rail and the top rail; by pulling a separate bead, the second curtain hanging rope and the first curtain hanging rope in the control assembly are driven to synchronously release, synchronously retract, release and retract separately, thereby realizing the deployment and storage of the first curtain and the deployment and storage of the second curtain.

2. A single-loop pull-bead controlled horizontal folding automatic descending double-layer curtain system as claimed in claim 1, characterized in that: The control assembly includes a first curtain rotating shaft, a rope pulley, a second curtain rotating shaft, a reversing component, a linkage component, a rope brake component, a damping component, a locking component and an end limit component; the second curtain rotating shaft and the first curtain rotating shaft both pass through the linkage component, at least two rope brake components, a damping component and a locking component; one end of the second curtain rotating shaft is connected to the end limit component, and the other end is connected to the first output end of the reversing component; one end of the first curtain is hinged to the top rail, and the other end is connected to the second output end of the reversing component; the input end of the reversing component is connected to the rope pulley; the control assembly includes a first curtain unfolded state, a first curtain stored state, a second curtain closed state, and a second curtain closed state. The first curtain is in an extended state and the second curtain is in a retracted state; when the first curtain and the second curtain are both in the retracted state, when the pull bead is pulled downward for the first time, the control assembly enters the first curtain extended state, the reversing component outputs the torque to the first curtain rotating shaft through the second output end, and the linkage component is in a state where the first curtain rotating shaft and the second curtain rotating shaft are linked. At this time, the second curtain hanging rope and the first curtain hanging rope are both in a rope-releasing state, the bottom rail and the middle rail both descend, and the first curtain is extended as the middle rail descends; the first curtain is extended to the maximum range, and when the pull bead is pulled downward in the opposite direction for the first time, the second curtain is extended, and the reversing component outputs the torque to the first curtain rotating shaft through the first output end. The first curtain rotating shaft is locked by the locking assembly so that the bottom rail is suspended. At this time, the second curtain rotating shaft rotates in the opposite direction, so that the rope brake assembly rewinds the second curtain hanging rope, so that the middle rail rises, thereby making the second curtain unfold and the first curtain retract; after rising to a preset height, when the pull bead is released, the second curtain rotating shaft is locked by the locking assembly; when the pull bead is pulled forward for the second time, the locking assembly can be reversed to release the locking state of the second curtain rotating shaft, thereby entering the second curtain storage state. At this time, the second curtain The curtain rotating shaft continues to rotate in the opposite direction, thereby releasing the first curtain hanging rope, causing the middle rail to drop, thereby causing the second curtain to be stored and the first curtain to be unfolded; when the second curtain is lowered to the maximum range, the end limit assembly pushes the second curtain rotating shaft to move radially, causing the reversing assembly to switch the torque from the first output end to the second output end, so that when the pull bead is pulled in the opposite direction for the second time, the first curtain enters the storage state, and the linkage assembly is at a turntable where the first curtain rotating shaft and the second curtain rotating shaft are linked. At this time, the second curtain hanging rope and the first curtain hanging rope are in the rope-collecting state, causing the bottom rail and the middle rail to rise, and the first curtain to shrink as the middle rail rises.

3. The single-loop pull-bead controlled horizontal folding automatic descending double-layer curtain system according to claim 1, characterized in that: The reversing assembly includes a first housing, a reduction gear set, a reversing input shaft, a first rotating disk, a second rotating disk, a first gear, a second gear, a first output shaft sleeve, and a second output shaft sleeve; the rope pulley is hingedly mounted in the first housing, and a third gear is provided beside the rope pulley, the input end of the reduction gear set is meshed with the third gear, and the output end of the reduction gear set is fixedly connected to the reversing input shaft; the reversing input shaft, the first rotating disk, the first gear and the first output shaft sleeve are arranged on the extension line of the axis of the second curtain rotating shaft, and the second gear and the second output shaft sleeve are arranged on the extension line of the axis of the first curtain rotating shaft; a first axial groove is provided on the reversing input shaft, the first rotating disk is limited in the first axial groove, and the first output shaft sleeve is fixedly connected to the reversing input shaft. A second rotating disk is fixedly mounted on the sleeve, a limiting sleeve is provided on the second rotating disk, a push plate parallel to the second rotating disk is sleeved on the limiting sleeve, and a spring is provided between the push plate and the second rotating disk; the first gear is hingedly mounted on one end of the reversing input shaft close to the reduction gear group; an elastic limiting slider is provided on the first housing at a position corresponding to the first rotating disk, and a first limiting track and a second limiting track are provided on the first rotating disk corresponding to the elastic limiting slider; wedge-shaped protrusions are arranged in an array on both sides of the first rotating disk, a wedge-shaped protrusion is also provided on the side of the second rotating disk close to the first rotating disk, and a wedge-shaped protrusion is also provided on the side of the first gear close to the first rotating disk; the second gear is meshed and installed with the first gear.

4. The single-loop pull-bead controlled horizontal folding automatic descending double-layer curtain system according to claim 3, characterized in that: The locking assembly includes a second shell and an inner sleeve, an outer sleeve, a movable ball and a buffer spring which are mirror-imaged in the second shell, the inner sleeve being hingedly mounted on the second shell, the outer sleeve being sleeved on the inner sleeve, one end of the buffer spring being arranged on the inner sleeve, the other end being sleeved and fixed on the outer sleeve, and the outer sleeve can only rotate in one direction relative to the inner sleeve; a first circulating limiting groove for accommodating the movable ball is provided on the circumferential surface of the outer sleeve; a linear groove for accommodating the movable ball is provided in the second shell, so that half of the movable ball is located in the first circulating limiting groove and the other half is located in the linear groove; the circulating groove includes a positive pulling circulating section, a reverse locking section and a reverse pulling circulating section. Unlocking section; when the pull bead is pulled, the outer sleeve and the inner sleeve rotate along with the second curtain rotating shaft or the first curtain rotating shaft. At this time, the movable ball is always located in the forward circulation section. When the pulling action is stopped or the pull bead is released, the weight of the bottom rail and the middle rail causes the second curtain rotating shaft and the first curtain rotating shaft to rotate in the opposite direction. At this time, the movable ball moves in the opposite direction and enters the reverse locking section, thereby preventing the second curtain rotating shaft and the first curtain rotating shaft from continuing to rotate. When the pull bead is continuously pulled in the opposite direction, the movable ball enters the reverse pull unlocking section from the reverse locking section. Therefore, the outer sleeve can only rotate in one direction relative to the inner sleeve, thereby realizing the reverse rotation of the first curtain rotating shaft and the second curtain rotating shaft. When it is necessary to continue pulling the bead forward, it is necessary to first pull the bead in the reverse direction so that the movable ball enters the reverse pull unlocking section from the reverse locking section, and then continue to pull the bead downward in the forward direction so that the movable ball returns from the reverse pull unlocking section to the forward pull cycle section, thereby realizing the continued forward rotation of the first curtain rotating shaft and the second curtain rotating shaft.

5. The single-loop pull-bead controlled horizontal folding automatic descending double-layer curtain system according to claim 4, characterized in that: The linkage assembly includes a third shell, a sliding plate, a return spring, a hinge seat, a linkage sleeve, a swing plate, a fourth gear, a fifth gear, a lifting top rod, and a sixth gear; the inner bottom of the third shell is provided with a sliding groove in the radial direction toward the second curtain rotation axis, the sliding plate limit is set in the sliding groove, the inner upper limit of the third shell is provided with a lifting top rod that can only move up and down, the bottom of the lifting top rod abuts against the swing rod, the bottom of the top rail is provided with a first wire hole corresponding to the position of the lifting top rod, the bottom of the third shell is provided with a second wire hole corresponding to the rope brake assembly, the sliding plate is provided with a third wire hole that is staggered with the first wire hole, and one end of the second curtain hanging rope and the first curtain hanging rope passes through the first wire hole, the third wire hole and the fourth wire hole in turn. The second wire passing hole and the third wire passing hole are rear-wound on the rope brake assembly; the return spring is arranged between the sliding plate and the third shell, and the first wire passing hole is covered with an elastic diaphragm that protrudes in the corresponding direction when the second curtain hanging rope and the first curtain hanging rope are pulled. The bottom of the lifting top rod abuts against the elastic diaphragm, the fourth gear is fixedly mounted on the linkage sleeve, the fifth gear is hingedly mounted on the swing pendulum and meshes with the fourth gear, and the sixth gear is sleeved on the second curtain rotating shaft. When the swing plate swings toward the second curtain rotating shaft, the fifth gear meshes with the sixth gear. When the lifting top rod rises as the elastic diaphragm protrudes upward and pushes up the swing plate, the fifth gear and the sixth gear are disengaged.

6. The single-loop pull-bead controlled horizontal folding automatic descending double-layer curtain system according to claim 5, characterized in that: The rope brake assembly includes a brake drum, a rotating drum, a brake sleeve and a brake bump; the brake drum is arranged parallel to the rotating drum; a section of the brake sleeve enters one end of the brake drum, and the brake drum is hinged; an inclined groove is provided at one end of the brake drum close to the brake sleeve; a wedge-shaped brake block is provided in a circular array at one end of the brake sleeve away from the brake sleeve, and a brake limit block is provided at the other end corresponding to the inclined groove; the brake bump is provided on the third shell, and the brake bump is also spaced apart from the wedge-shaped brake block.

7. A single-loop pull-bead controlled horizontal folding automatic descending double-layer curtain system as claimed in claim 6, characterized in that: The brake drum and the rotating drum are arranged in a cone barrel shape.

8. The single-loop pull-bead controlled horizontal folding automatic descending double-layer curtain system according to claim 2, characterized in that: The cross-sections of the second curtain rotation axis and the first curtain rotation axis are polygonal.

9. The single-loop pull-bead controlled horizontal folding automatic descending double-layer curtain system according to claim 2, characterized in that: The end limit assembly includes a fourth housing, a first helical gear, a second helical gear, an externally threaded sleeve and an internally threaded sleeve; one end of the externally threaded sleeve is hinged to the fourth housing, and the other end is hinged to the screw, one end of the first helical gear is hinged to the fourth housing, the second helical gear is arranged beside the first helical gear and meshes with the first helical gear, the second helical gear intersects with the axis of the first helical gear, and both ends of the second helical gear are hinged to and limited by the fourth housing; the fourth housing is provided with a second limiting groove corresponding to the externally threaded sleeve, and the internally threaded sleeve is sleeved and mounted on the externally threaded sleeve and extends outward into the second limiting groove.

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