CN115929855A - Control device of roller blind and blind - Google Patents
Control device of roller blind and blind Download PDFInfo
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- CN115929855A CN115929855A CN202310239427.6A CN202310239427A CN115929855A CN 115929855 A CN115929855 A CN 115929855A CN 202310239427 A CN202310239427 A CN 202310239427A CN 115929855 A CN115929855 A CN 115929855A
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Abstract
The invention discloses a control device of a roller blind and the roller blind, comprising a shell, a transmission mechanism and a reversing mechanism; the transmission mechanism comprises a main shaft, a transmission shaft and an input shaft which are arranged between the rear vertical plate and the front vertical plate, a transmission wheel fixedly connected with the first end of the main shaft, a duplicate gear arranged on one side of the transmission wheel, a transmission ratchet wheel arranged on one side of the duplicate gear, an intermediate wheel rotatably connected with the first end of the transmission shaft, and a first driving wheel and a second driving wheel which are sequentially and fixedly connected with the first end of the input shaft; the reversing mechanism comprises a direction adjusting wheel and a pawl arranged on the direction adjusting wheel; the two pawls are respectively matched with the duplex output ratchet wheel and the transmission ratchet wheel to form a ratchet mechanism, so that the unique functions of the power output by the control device of the roller window shade and the movement direction of the window shade are realized; meanwhile, the technical effects that the direction of the pawl is changed, and the power direction output by the control device of the roller blind and the lifting of the blind are also changed are achieved.
Description
Technical Field
The invention belongs to the field of roller window shades, and particularly relates to a control device of a roller window shade.
Background
The window shade plays an important role in production and life of people, indoor light can be adjusted by the window shade, and lighting or shading can be carried out according to needs. When the person has a rest, the light is required to be darker, and when the person works and learns, the light is required to be brighter, and at the moment, the intensity of the light in the room can be adjusted by changing the shading area of the shading curtain, so that string light is prevented from being generated.
In the teaching process, the window area is often great in places such as classroom, office, gymnasium, and the shading demand is also comparatively outstanding, often can receive the direct projection of sunshine during teaching, official working and sports, forms the glare and influences teaching office quality, consequently needs frequently to mediate indoor light to satisfy indoor light needs. At present, roller window shades are widely installed in schools, and the purpose of lifting the window curtains is achieved by pulling adjusting ropes forwards and backwards. CN202559997U discloses a hollow glass traction device with a built-in curtain, which comprises a louver overturning inner handle arranged in a frame and a louver overturning outer handle arranged outside the frame, wherein the louver overturning inner handle is correspondingly matched with the louver overturning outer handle; the blade overturning component comprises a roller support arranged on the frame cross beam, an overturning roller tightly matched and connected with a gear set arranged on the frame, and an overturning ladder rope which passes through the roller support, is wound on the overturning roller and is linked with the overturning roller; and the transmission device comprises a gear set and a transmission rack, teeth at one end of the transmission rack are meshed with the gear set, the other end of the transmission rack is connected with the shutter turnover inner handle in a reciprocating transmission manner through a connecting push rod, and the gear set is connected with the turnover roller through a gear output shaft, so that the function of shading adjustment is realized. CN213597842U discloses an electric lifting type window shade, which is driven by a motor, a reversing transmission mechanism and a winding drum to lift, wherein the motor and the winding drum are arranged side by side, a driving shaft of the motor is connected with a power input end of the reversing transmission mechanism, the winding drum is connected with a power output end of the reversing transmission mechanism, a stroke control mechanism is further connected with the winding drum to control the winding drum to rotate to drive a bracket to lift, and the reversing transmission mechanism changes the power transmission direction, so that the center of gravity of the window shade is more stable in the lifting process.
In the above-mentioned technology, when adjusting the curtain, the direction of motion of haulage rope and the direction of motion of curtain or window shade only correspond. In the teaching process of a school, teaching activities and class activities are carried out alternately, during teaching, a shading curtain needs to be put down properly to reduce or prevent strong light from entering, when a class has a rest, the indoor illumination intensity needs to be enhanced properly, so the shading curtain needs to be adjusted frequently, and a plurality of users often operate by mistake when using the shading curtain, so that a roller of the roller shading curtain exceeds the limit and breaks down, and because the adjusting rope is only corresponding to the moving direction of the shading curtain, the adjusting rope is often reversed when adjusting the shading curtain, and the direction of the adjusting rope needs to be changed again; in addition, when the shade is stuck or reaches a limit position, the control device may be damaged by pulling the adjusting cord.
Disclosure of Invention
The invention aims to provide a control device of a roller blind, which can move in the specified direction no matter whether an adjusting rope is in the forward direction or the reverse direction.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a control device of a roller blind comprises a shell, a transmission mechanism and a reversing mechanism;
the shell comprises a rear upper cover, a lower cover, a rear vertical plate, a front vertical plate arranged in parallel with the rear vertical plate, a left vertical plate connecting the rear vertical plate and the front vertical plate, and a right vertical plate connecting the rear vertical plate and the front vertical plate;
the transmission mechanism comprises a main shaft, a transmission shaft and an input shaft which are arranged between the rear vertical plate and the front vertical plate, a transmission wheel fixedly connected with the first end of the main shaft, a duplicate gear arranged on one side of the transmission wheel, a transmission ratchet wheel arranged on one side of the duplicate gear, an intermediate wheel rotatably connected with the first end of the transmission shaft, and a first driving wheel and a second driving wheel which are sequentially and fixedly connected with the first end of the input shaft;
the transmission wheel is in transmission connection with the first driving wheel through the middle wheel;
the dual gear is rotationally connected with the main shaft;
the duplex gear comprises a duplex input gear and a duplex output ratchet;
the duplex input gear is in transmission connection with the second driving wheel;
the transmission ratchet wheel is fixedly connected with the main shaft;
the reversing mechanism comprises a direction adjusting wheel which is rotationally linked with the second end of the main shaft and a pawl arranged on the direction adjusting wheel;
the number of the pawls is two, and the pawls are respectively matched with the duplex output ratchet and the transmission ratchet to form a ratchet mechanism.
Further, the pawl comprises the ratchet column penetrating through the direction adjusting wheel, a reversing rod fixedly connected with the top end of the ratchet column, a special-shaped block fixedly connected with the lower end of the ratchet column and a pawl spring sleeved on the ratchet column;
the reversing rod is arranged on the outer side of the steering wheel;
the special-shaped block is arranged on the inner side of the steering wheel;
the pawl spring is arranged between the special-shaped block and the steering wheel.
Furthermore, the reversing mechanism also comprises a linkage rod movably connected with the two reversing rods and a spring shock absorber movably connected with the linkage rod at one end;
the special-shaped block comprises a slide surface and a non-return surface;
the other end of the spring shock absorber is rotatably connected with the direction adjusting wheel.
The reversing rod is arranged on an extension line of an intersection line of the slide-jump surface and the non-return surface.
Furthermore, the sliding surface is a conical surface or two inclined surfaces;
the non-return surface is a cylindrical surface or two planes.
Furthermore, the control device of the roller blind also comprises a direction adjusting mechanism;
the direction adjusting mechanism comprises a reversing ring sleeved on the outer side of the direction adjusting wheel and a manual shifting fork for controlling the reversing ring to move along the axial direction of the direction adjusting wheel;
the reversing ring is rotationally connected with the linkage rod;
the manual shifting fork is connected to the left vertical plate in a sliding mode.
Furthermore, the reversing mechanism also comprises an output wheel fixedly connected to the transmission shaft;
the output wheel is in transmission connection with the direction-adjusting wheel.
Furthermore, the control device of the roller blind also comprises an automatic rotating mechanism;
the automatic swing mechanism comprises a mounting seat, a sliding block, a swing rod, a spring sleeve, a compression spring, a lever, a limiting column and a sliding block, wherein the mounting seat, the sliding block, the swing rod, the spring sleeve, the compression spring, the lever, the limiting column and the sliding block are arranged on the lower cover;
the limiting column comprises a first limiting column and a second limiting column;
the first limiting column and the second limiting column are arranged at intervals, and the local spacing between the first limiting column and the second limiting column is larger than the sliding stroke of the sliding block;
the first end of the sliding block is in spiral transmission connection with the transmission shaft, the second end of the sliding block is in sliding connection with the driving shaft, and a first deflector rod and a second deflector rod are arranged on the sliding block;
the mounting seat is provided with a strip-shaped guide hole, the sliding block is connected with the mounting seat in a sliding way through the guide hole,
the sliding shifting block is provided with a first shifting block and a second shifting block, and the reversing ring is arranged between the first shifting block and the second shifting block;
a swing rod chute is arranged at the first end of the swing rod; the swing rod is movably connected with the sliding and shifting block through a swing rod sliding groove, and the second end of the swing rod is rotatably connected with the mounting seat;
the first end of the spring rod is rotatably connected to the middle part of the swing rod, and the second end of the spring rod is in sliding connection with the first end of the spring sleeve;
the compression spring is arranged between the spring rod and the spring sleeve;
the second end of the spring sleeve is rotatably connected with the first end of the lever;
a first limiting column and a second limiting column are arranged on the base;
the middle part of the lever is rotatably connected with the mounting seat, the first end of the lever is arranged between the first limiting column and the second limiting column, and the second end of the lever is arranged between the first driving lever and the second driving lever.
Furthermore, the reversing mechanism also comprises a friction plate fixedly connected with one side of the output wheel and a friction output shaft arranged on one side of the friction plate;
the first end of the friction output shaft is rotatably connected with the second end of the transmission shaft, and meanwhile, the first end of the friction output shaft is in friction connection with one side of the friction plate.
Furthermore, the reversing mechanism also comprises a plane thrust bearing and a thrust adjusting rod which are sleeved on the friction output shaft;
the plane thrust bearing is rotationally connected with the friction output shaft;
one end of the thrust adjusting rod presses the plane thrust bearing on the friction output shaft.
A window shade comprises any one of the above control devices for rolling the window shade, the window shade and a rolling roller bin for rolling and releasing the window shade;
one end of the pipe rolling bin is provided with a winding roller input shaft;
the winding roller input shaft is in transmission connection with the direction adjusting wheel, the transmission shaft or the friction output shaft.
Compared with the prior art, the invention has the following beneficial effects:
the power of the input shaft is transmitted to the transmission ratchet wheel through the first driving wheel, the intermediate wheel, the transmission wheel and the main shaft, and the power of the main shaft is transmitted to the duplex output ratchet wheel through the second driving wheel and the duplex input wheel, so that the rotation direction of the duplex output ratchet wheel is opposite to the rotation direction of the transmission ratchet wheel, the rotation angular speeds are equal, and the torque output by the control device of the roller shade is ensured to be the same; when the input shaft rotates in the forward direction, the transmission ratchet wheel rotates in the forward direction, and the duplex output ratchet wheel rotates in the reverse direction; when the input shaft rotates reversely, the transmission ratchet wheel rotates reversely, and the duplex output ratchet wheel rotates forwards; when two pawls on the direction-adjusting wheel are in forward directions, namely the pawls are driven to rotate in forward directions, one of the duplex output ratchet wheel and the transmission ratchet wheel which rotates in forward directions drives the direction-adjusting wheel to rotate in forward directions through the pawls and transmit power, and the other one of the duplex output ratchet wheel and the transmission ratchet wheel which rotates in reverse directions slides with the pawls and does not transmit power; similarly, when the two pawls on the direction-adjusting wheel are in reverse directions, one of the duplex output ratchet wheel and the transmission ratchet wheel which rotates in the reverse direction drives the direction-adjusting wheel to rotate in the reverse direction through the pawls and transmit power, and the other one of the duplex output ratchet wheel and the transmission ratchet wheel which rotates in the forward direction slides with the pawls and does not transmit power; therefore, as long as the direction of the pawl is determined, the direction of the power output by the control device of the roller blind is unique no matter whether the input power is forward or reverse; when the direction of the pawl is changed, the direction of the power output by the control device of the roller blind is also changed.
The pawl is internally provided with a reversing rod, and the special-shaped block is driven to rotate by rotating the reversing rod, so that the forward direction or the reverse direction of the pawl is switched, and the control of the power direction output by the control device of the roller blind is realized.
The synchronization of the adjusting directions of the two pawls is ensured through the linkage rod of the reversing mechanism; the switching speed of the linkage rod can be guaranteed by arranging the spring shock absorber, and the abnormal-shaped block is prevented from being damaged.
The reversing ring is connected with the linkage rod, the sliding direction of the reversing ring can be controlled through the sliding manual shifting fork, and then the directions of the two pawls are changed simultaneously, so that the control device of the roller blind is more convenient to control the power direction.
The power of the direction regulating wheel is output through the transmission shaft by the output wheel fixedly connected to the transmission shaft, the transmission shaft is provided with a transmission external thread, and the first end of the sliding block is provided with a transmission internal thread, so that the spiral transmission of the transmission shaft and the first end of the flowing block is realized; the second end of the sliding block is in sliding connection with the driving shaft, so that the sliding block only moves along the axial direction of the transmission shaft and the driving shaft; the first end of the sliding block is provided with a first deflector rod and a second deflector rod which can be used for deflecting the second end of the lever so as to drive the spring sleeve and the spring rod to slide, and the compression spring is compressed and compressed; when the first shifting lever or the second shifting lever shifts the lever to be parallel to the spring rod, the compression spring is compressed to the shortest, the second end of the lever is continuously shifted, the compression spring quickly separates the spring sleeve and the spring rod to two sides, the first end of the lever is abutted against the first limiting column or the second limiting column, and the second end of the lever is separated from the first shifting lever or the second shifting lever and moves to a position between the first shifting lever and the second shifting lever; under the continuous action of the compression spring, the first end of the spring rod pushes the swing rod to rotate, the first end of the swing rod drives the sliding shifting block to slide along the guide hole, the reversing ring is shifted to another limit position from one limit position by the first shifting block and the second shifting block on the sliding shifting block, and therefore the steering of the steering wheel is changed, the automatic rotation function of the control device is achieved, and the control device is prevented from being damaged due to continuous operation after the window shade reaches the limit position.
When the symmetry plane of first driving lever and second driving lever and first spacing post and the coincidence of the spacing post symmetry plane of second, the first end of lever can freely swing between first spacing post and the spacing post of second, and the lever second end swings between first driving lever and second driving lever for when the swift current piece is located the intermediate position, manual shift fork is thrown away and can slides, has guaranteed at the optional position, all can change the direction of the moment of torsion of output.
The friction plate is in friction connection with the friction output shaft, positive pressure between the friction plate and the friction output shaft is adjusted through the thrust adjusting rod and the plane thrust bearing, the upper limit of output torque can be adjusted, and the problem of preventing the control device and the window shade from being damaged is solved.
Drawings
FIG. 1 is a schematic structural view of a window shade of embodiment 4 of the present invention;
FIG. 2 is a schematic structural view of embodiment 5 of the present invention;
FIG. 3 is a cross-sectional view of a control device for a roller shade according to the present invention;
FIG. 4 isbase:Sub>A cross-sectional view taken along line A-A of FIG. 3 in accordance with the present invention;
FIG. 5 is a partial sectional view of the mechanism of the automatic swing mechanism of the present invention;
FIG. 6 is a cross-sectional view of a steering wheel half of the present invention;
FIG. 7 is a right side view of the present invention shown in FIG. 6;
FIG. 8 is a perspective view of the pawl of the present invention;
fig. 9 is a bottom view of the pawl of the present invention.
FIG. 10 is a structural diagram of a mechanism state I of the automatic slewing mechanism of the present invention;
FIG. 11 is a schematic structural diagram of a mechanism switching process I of the automatic slewing mechanism of the present invention;
FIG. 12 is a structural diagram of a mechanism switching process II of the automatic slewing mechanism of the present invention;
FIG. 13 is a structural diagram of the mechanism status II of the automatic slewing mechanism of the present invention;
in the drawings: 11 rear vertical plate, 12 front vertical plate, 13 left vertical plate, 14 right vertical plate, 15 upper cover, 16 lower cover, 21 main shaft, 22 transmission shaft, 23 input shaft, 31 transmission wheel, 32 intermediate wheel, 33 first driving wheel, 34 second driving wheel, 351 duplex input gear, 352 duplex output ratchet wheel, 36 transmission ratchet wheel, 37 direction regulating wheel, 38 output wheel, 381 friction plate, 39 friction output shaft, 391 plane thrust bearing, 392 thrust adjusting rod, 41 reversing ring, 42 manual shifting fork, 43 sliding block, 431 first shifting rod, 432 second shifting rod, 5 automatic rotating mechanism, 51 mounting seat, 511 guide hole, 52 sliding block, 521 first shifting block, 522 second shifting block, 53 swinging rod, 531 swinging rod sliding groove, 541 spring rod, 542 sleeve, 543 compression spring, 55 lever, 56 limit column, 561 first limit column, 562 second limit column, 6 pawl, 61 ratchet column, 62 pawl spring, 63 special block, 631 sliding surface, 64 rod, 65 reversing rod, 66 damping rod, 71 roller, 711 roller shutter roll up roller, 72 input roller 72.
Description of the preferred embodiment
In the present application, the fixed connection manner of the gear and the shaft may be a conventional fixed manner such as a key connection, a snap spring connection, a threaded connection, and the like, and the shaft is provided with a stepped shaft, a key groove, and the like for positioning according to actual needs.
Example 1: as shown in fig. 3-5, a control device for a roller shade 72 includes a housing, a transmission mechanism, and a reversing mechanism; the shell comprises a rear upper cover 15, a lower cover 16, a rear vertical plate 11, a front vertical plate 12 arranged in parallel with the rear vertical plate 11, a left vertical plate 13 connecting the rear vertical plate 11 and the front vertical plate 12, and a right vertical plate 14 connecting the rear vertical plate 11 and the front vertical plate 12; the transmission mechanism comprises a main shaft 21, a transmission shaft 22 and an input shaft 23 which are arranged between the rear vertical plate 11 and the front vertical plate 12, a transmission wheel 31 fixedly connected with the first end of the main shaft 21, a duplicate gear arranged on one side of the transmission wheel 31, a transmission ratchet wheel 36 arranged on one side of the duplicate gear, a middle wheel 32 rotatably connected with the first end of the transmission shaft 22, and a first driving wheel 33 and a second driving wheel 34 which are sequentially and fixedly connected with the first end of the input shaft 23; the input shaft 23 is a power input end, and the power input comprises manual and power mechanical driving; the transmission shaft 22 is positioned on a vertical bisector of a connecting line of the axes of the main shaft 21 and the input shaft 23; the transmission wheel 31 is in transmission connection with the first driving wheel 33 through the intermediate wheel 32; the duplicate gear is rotationally connected with the main shaft 21; the dual gears comprise a dual input gear 351 and a dual output ratchet 352; the duplex input gear 351 is in transmission connection with the second driving wheel 34; the transmission ratchet wheel 36 is fixedly connected with the main shaft 21; the reversing mechanism comprises a direction adjusting wheel 37 which is rotationally linked with the second end of the main shaft 21 and a pawl 6 arranged on the direction adjusting wheel 37; the number of the pawls 6 is two, and the two pawls are respectively matched with the duplex output ratchet 352 and the transmission ratchet 36 to form a ratchet mechanism; the duplex output ratchet 352 and the transmission ratchet 36 are arranged in a cavity of the direction adjusting wheel 37, a second end of the direction adjusting wheel 37 penetrates through the front vertical plate 12 and is rotationally linked with the front vertical plate 12, and a second end of the direction adjusting wheel 37 is a power output end.
The working process is as follows: the input shaft 23 is used for inputting power in a forward direction through the input shaft 23, the input shaft 23 drives the first driving wheel 33 and the second driving wheel 34 to rotate in the forward direction, the first driving wheel 33 drives the transmission wheel 31 to rotate in the forward direction through the intermediate wheel 32, the transmission wheel 31 drives the main shaft 21 to rotate in the forward direction and drives the transmission ratchet wheel 36 to rotate in the forward direction, the second driving wheel 34 is meshed with the duplex input gear 351, and the duplex input gear 351 is rotationally connected between the transmission wheel 31 and the transmission ratchet wheel 36, so that the duplex output ratchet wheel 352 is driven to rotate in a reverse direction through the duplex input gear 351; since the transmission ratio of the duplex output ratchet 352 to the transmission ratchet 36 is 1, the rotation speed of the duplex output ratchet 352 and the transmission ratchet 36 is the same; the speed ratio of the power input end to the power output end is constant; because the two pawls 6 on the direction-adjusting wheel 37 are both in the positive direction, the pawls 6 can only be driven to rotate in the positive direction, so the duplex output ratchet 352 slides with the pawls 6, power cannot be transmitted, and the transmission ratchet 36 is clamped with the pawls 6 and transmits torque to drive the direction-adjusting wheel 37 to rotate in the positive direction; similarly, power is reversely input through the input shaft 23, the duplex output ratchet 352 rotates in the forward direction, the transmission ratchet 36 rotates in the reverse direction, the two pawls 6 on the direction adjusting wheel 37 are both in the forward direction, the duplex output ratchet 352 is clamped with the pawls 6 and transmits torque to drive the direction adjusting wheel 37 to rotate in the forward direction, the transmission ratchet 36 slides with the pawls 6, power cannot be transmitted, and the forward rotation of the direction adjusting wheel 37 cannot be blocked; in summary, when the two pawls 6 are both in the forward direction, the output power of the reversing mechanism is in the forward direction regardless of whether the input shaft 23 rotates in the forward direction or in the reverse direction. Similarly, when both pawls 6 are in reverse, the reverse outputs power in both directions regardless of whether the input shaft 23 is rotating in the forward direction or in the reverse direction.
Example 2: as shown in fig. 3-8, a control device for a roller shade 72 includes a housing, a transmission mechanism, a reversing mechanism, and a direction-adjusting mechanism; the shell comprises a rear upper cover 15, a lower cover 16, a vertical plate, a front vertical plate 12 arranged in parallel with the rear vertical plate 11, a left vertical plate 13 connecting the rear vertical plate 11 and the front vertical plate 12, and a right vertical plate 14 connecting the rear vertical plate 11 and the front vertical plate 12; the transmission mechanism comprises a main shaft 21, a transmission shaft 22 and an input shaft 23 which are arranged between the rear vertical plate 11 and the front vertical plate 12, a transmission wheel 31 which is fixedly connected with the first end of the main shaft 21, a duplicate gear which is arranged on one side of the transmission wheel 31, a transmission ratchet wheel 36 which is arranged on one side of the duplicate gear, a middle wheel 32 which is rotatably connected with the first end of the transmission shaft 22, and a first driving wheel 33 and a second driving wheel 34 which are sequentially and fixedly connected with the first end of the input shaft 23; the input shaft 23 is a power input end, and the power input comprises manual and power mechanical driving; the transmission shaft 22 is positioned on a vertical bisector of a connecting line of the axes of the main shaft 21 and the input shaft 23; the transmission wheel 31 is in transmission connection with the first driving wheel 33 through the intermediate wheel 32; the duplicate gear is rotationally connected with the main shaft 21; the duplicate gear comprises a duplicate input gear 351 and a duplicate output ratchet 352; the duplex input gear 351 is in transmission connection with the second driving wheel 34; the transmission ratchet wheel 36 is fixedly connected with the main shaft 21; the reversing mechanism comprises a direction adjusting wheel 37 which is rotationally linked with the second end of the main shaft 21, two pawls 6 which are arranged on the direction adjusting wheel 37, a linkage rod 65 which is movably connected with the two pawls 6, an output wheel 38 which is fixedly connected with the transmission shaft 22 and a spring shock absorber 66 which is movably connected with the linkage rod 65 at one end; the other end of the spring shock absorber 66 is rotationally connected with the steering wheel 37; the pawl 6 is respectively matched with the duplex output ratchet 352 and the transmission ratchet 36 to form a ratchet mechanism; the pawl 6 comprises the ratchet column 61 penetrating through the direction-adjusting wheel 37, a reversing rod 64 fixedly connected with the top end of the ratchet column 61, a special-shaped block 63 fixedly connected with the lower end of the ratchet column 61 and a pawl spring 62 sleeved on the ratchet column 61; the reversing rod 64 is arranged on the outer side of the steering wheel 37; two ends of the linkage rod 65 are respectively rotatably connected with the two reversing rods 64; the special-shaped block 63 is arranged on the inner side of the steering wheel 37; the pawl spring 62 is arranged between the profile block 63 and the direction-adjusting wheel 37; the special-shaped block 63 comprises a conical slide surface 631 and a cylindrical check surface 632; the other end of the spring shock absorber 66 is rotationally connected with the steering wheel 37; the direction adjusting mechanism comprises a reversing ring 41 sleeved on the outer side of the direction adjusting wheel 37 and a manual shifting fork 42 for controlling the reversing ring 41 to move along the axial direction of the direction adjusting wheel 37; the reversing ring 41 is rotationally connected with the linkage rod 65; the manual shifting fork 42 is connected to the left vertical plate 13 in a sliding manner; the duplex output ratchet 352 and the transmission ratchet 36 are arranged in a cavity of the direction-adjusting wheel 37, and the output wheel 38 is in transmission connection with the direction-adjusting wheel 37; one end of the transmission shaft 22 penetrates through the front vertical plate 12 or the rear vertical plate 11 to form a torque output end of a control device of the roller shade 72.
The working process is as follows: the input shaft 23 is used for inputting power in a forward direction through the input shaft 23, the input shaft 23 drives the first driving wheel 33 and the second driving wheel 34 to rotate in the forward direction, the first driving wheel 33 drives the transmission wheel 31 to rotate in the forward direction through the intermediate wheel 32, the transmission wheel 31 drives the main shaft 21 to rotate in the forward direction and drives the transmission ratchet wheel 36 to rotate in the forward direction, the second driving wheel 34 is meshed with the duplex input gear 351, and the duplex input gear 351 is rotationally connected between the transmission wheel 31 and the transmission ratchet wheel 36, so that the duplex output ratchet wheel 352 is driven by the duplex input gear 351 to rotate in the reverse direction; since the transmission ratio of the duplex output ratchet 352 to the transmission ratchet 36 is 1, the rotation speed of the duplex output ratchet 352 and the transmission ratchet 36 is the same; the speed ratio of the power input end to the power output end is constant; because the directions of the conical surfaces on the two special-shaped blocks 63 are the same and both face the forward direction, when the transmission ratchet wheel 36 rotates in the forward direction, the conical slide surface 631 corresponding to the transmission ratchet wheel 36 is not stressed, the cylindrical non-return surface 632 is stressed and cannot extrude the special-shaped blocks 63 upwards, the special-shaped blocks 63 can only be driven to rotate in the forward direction, the duplex output ratchet wheel 352 rotates in the reverse direction, the conical slide surface 631 is stressed to move upwards, the pawl spring 62 is compressed until the special-shaped blocks 63 are separated from the duplex output ratchet wheel 352, the special-shaped blocks 63 slide relative to the steering wheel 37, the duplex output ratchet wheel 352 rotates in the reverse direction, and the forward rotation of the steering wheel 37 cannot be blocked, so that the transmission ratchet wheel 36 is clamped with the special-shaped blocks 63 and transmits torque, and the steering wheel 37 rotates in the forward direction; similarly, power is reversely input through the input shaft 23, the duplex output ratchet 352 rotates in the forward direction, the transmission ratchet 36 rotates in the reverse direction, the sliding surface 631 on the special-shaped block 63 rotates in the forward direction, the duplex output ratchet 352 is clamped with the pawl 6 and transmits torque to drive the steering wheel 37 to rotate in the forward direction, the transmission ratchet 36 slides with the special-shaped block 63, power cannot be transmitted, and the forward rotation of the steering wheel 37 cannot be hindered; in summary, when the sliding surfaces 631 of the two profile blocks 63 are both in the forward direction, the output power of the reversing mechanism is in the forward direction regardless of whether the input shaft 23 rotates in the forward direction or in the reverse direction. Similarly, when both pawls 6 are in reverse, the reverse outputs power in both directions regardless of whether the input shaft 23 is rotating in the forward direction or in the reverse direction. When the direction of the output torque needs to be changed, only the manual shifting fork 42 needs to be switched, the manual shifting fork 42 drives the reversing ring 41 to slide along the axial direction of the steering wheel 37, the reversing ring 41 drives the two reversing rods 64 to rotate around the respective linked ratchet columns 61 through the linkage rod 65, the special-shaped blocks 63 fixedly linked with the ratchet columns 61 also rotate, and the sliding surfaces 631 on the special-shaped blocks 63 face in opposite directions; then, during the rotation of the reversing lever 64, the spring damper 66 is compressed and then rapidly expands to drive the special-shaped block 63 to rapidly switch the orientation of the slide surface 631, and meanwhile, the switching process has obvious breaking feeling.
Example 3: as in fig. 3-13, similar to example 2, the differences are: the reversing mechanism further comprises a friction plate 381 fixedly connected with one side of the output wheel 38, a friction output shaft 39 arranged on one side of the friction plate 381, a plane thrust bearing 391 sleeved on the friction output shaft 39 and a thrust adjusting rod 392; a first end of the friction output shaft 39 is rotatably connected with the transmission shaft 22, and a first end of the friction output shaft 39 is frictionally connected with one side of the friction plate 381; the plane thrust bearing 391 is rotatably connected with the friction output shaft 39; one end of the thrust adjustment rod 392 presses the flat thrust bearing 391 against the friction output shaft 39; the control device of the roller shade 72 also comprises an automatic slewing mechanism 5; the automatic slewing mechanism 5 comprises a mounting seat 51 arranged on the lower cover 16, a sliding block 52, a swing rod 53, a spring rod 541, a spring sleeve 542, a compression spring 543, a lever 55, a limit column 56 and a sliding block 43 rotatably connected to the input shaft 23 and the transmission shaft 22; the position-limiting column 56 comprises a first position-limiting column 561 and a second position-limiting column 562; the first end of the sliding block 43 is in spiral transmission connection with the transmission shaft 22, the second end of the sliding block 43 is in sliding connection with the driving shaft, and a first driving lever 431 and a second driving lever 432 are arranged on the sliding block 43; when the symmetrical surfaces of the first driving lever 431 and the second driving lever 432 are superposed with the symmetrical surfaces of the first limiting column 561 and the second limiting column 562, the first end of the lever 55 can freely swing between the first limiting column 561 and the second limiting column 562, and the second end of the lever 55 swings between the first driving lever 431 and the second driving lever 432; a strip-shaped guide hole 51 is formed in the mounting seat 51, the sliding block 52 is connected with the mounting seat 51 in a sliding manner through the guide hole 51, a first shifting block 521 and a second shifting block 522 are arranged on the sliding block 52, and the reversing ring 41 is arranged between the first shifting block 521 and the second shifting block 522; a swing link chute 531 is arranged at the first end of the swing link 53; the swing rod 53 is movably connected with the sliding and shifting block 52 through a swing rod sliding groove 531, and the second end of the swing rod 53 is rotatably connected with the mounting base 51; the first end of the spring rod 541 is rotatably connected to the middle of the swing rod 53, and the second end of the spring rod 541 is slidably connected with the first end of the spring sleeve 542; the compression spring 543 is disposed between the spring rod 541 and the spring sleeve 542; the second end of the spring sleeve 542 is rotatably connected to the first end of the lever 55; a first limiting column 561 and a second limiting column 562 are arranged on the base; the middle part of the lever 55 is rotatably connected with the mounting seat 51, the first end of the lever 55 is arranged between the first limiting column 561 and the second limiting column 562, and the second end of the lever 55 is arranged between the first driving lever 431 and the second driving lever 432.
The working process is as follows: as shown in fig. 3 to 13, similar to example 2, the difference is that: the present embodiment enables switching of the power output direction at the limit position while limiting the maximum output torque of the control device of the roller blind 72.
Specifically, when the sliding surface 631 on the special-shaped block 63 is in the forward direction, the reversing ring 41 is located at the reverse output position, the direction-adjusting wheel 37 rotates in the forward direction, the direction-adjusting wheel 37 drives the output wheel 38 to rotate in the reverse direction, the output wheel 38 drives the transmission shaft 22 to rotate in the reverse direction, and the transmission shaft 22 drives the sliding block 43 to move in the α direction in a spiral transmission manner; when the first shift lever 431 contacts the second end of the lever 55, the first end of the lever 55 abuts against the second limit post 562; the symmetrical planes of the first driving lever 431 and the second driving lever 432 are overlapped with the symmetrical planes of the first limiting column 561 and the second limiting column 562 and are separated again; the sliding block 43 moves to the direction α continuously, the first shift lever 431 shifts the lever 55 to separate from the second limit post 562, and then the spring sleeve 542 and the spring rod 541 are driven to slide, and the compression spring 543 compresses; when the lever 55 is parallel to the spring rod 541, the compression spring 543 is compressed to the shortest, the second end of the lever 55 is shifted continuously, the compression spring 543 quickly separates the spring sleeve 542 and the spring rod 541 to two sides, the first end of the lever 55 abuts against the first limit post 561, the second end of the lever 55 is separated from the first shift rod 431, then the spring sleeve 542 and the spring rod 541 are separated continuously to two sides, the transfer block slides from the reverse output position to the forward output position along the guide hole 51, meanwhile, the first shift block 521 shifts the reversing ring 41 to slide axially along the direction-adjusting wheel 37, the manual shift fork 42 moves along with the reversing ring 41, the reversing rod 64 drives the special-shaped block 63 to reverse, the sliding surface 631 changes from forward to reverse, the direction-adjusting wheel 37 changes from forward to reverse, the output wheel 38 changes from forward to forward, the sliding block 43 moves reversely to the alpha direction, when the second shift rod 432 contacts with the second end of the lever 55, the first end of the lever 55 abuts against the first limit post 561, and the symmetrical surfaces of the first shift rod 431 and the second limit post 562 are superposed again; the sliding block 43 moves reversely to the direction α, and the second driving lever 432 drives the lever 55 to separate from the first limiting post 561, so as to drive the spring sleeve 542 and the spring rod 541 to slide, and compress the compression spring 543; when the lever 55 is parallel to the spring rod 541, the compression spring 543 is compressed to the shortest, the second end of the lever 55 is shifted continuously, the compression spring 543 quickly separates the spring sleeve 542 and the spring rod 541 to two sides, the first end of the lever 55 abuts against the second limit post 562, the second end of the lever 55 is separated from the second shift lever 432, then the spring sleeve 542 and the spring rod 541 are separated continuously to two sides, the dial block slides from the reverse output position to the forward output position along the guide hole 51, meanwhile, the second shift block 522 shifts the reversing ring 41 to slide axially along the direction-changing wheel 37, the manual shift fork 42 moves along the reversing ring 41, the reversing rod 64 drives the special-shaped block 63 to reverse, the sliding surface 631 changes from the reverse direction to the forward direction, the direction-changing wheel 37 changes from the reverse direction rotation to the forward direction rotation, the output wheel 38 changes to the reverse direction rotation, and the forward and reverse direction switching of the output wheel 38 is completed by one cycle. The output wheel 38 drives the friction output shaft 39 to rotate through the friction plate 381, the positive pressure between the friction output shaft 39 and the friction plate 381 is adjusted through the adjusting rod, so that the maximum output torque of the friction output shaft 39 is adjusted, when the required torque of the friction output shaft 39 exceeds the maximum torque between the friction plate 381 and the friction output shaft 39, the friction output shaft 39 and the output wheel 38 rotate relatively, the friction output shaft 39 stops rotating under the action of sliding friction force between the friction output shaft and the friction output shaft, and therefore the control device of the roller window shade 72 cannot be damaged.
Example 4: as shown in fig. 1 and 3-5, a window shade 72 comprises a roller magazine 71, a window shade 72 and two sets of control devices for the roller shade 72 in embodiment 1; the output torques of the output shafts of the control devices of the two groups of roller shades 72 are equal in magnitude and opposite in direction, the roller bin 71 comprises a roller input shaft 711, and the roller input shaft 711 is in transmission connection with the second ends of the output wheels 38 of the control devices of the two groups of roller shades 72 respectively.
The working process is as follows: when the roller blind 72 needs to be retracted, a roller blind 72 control device with one group of output torques of positive rotation is started; when it is desired to open the shade 72, another set of roller shades 72 having a reverse output torque is activated.
Example 5: as shown in fig. 2 to 13, a window shade 72 includes a roller magazine 71, a window shade 72, and a control device of the roller window shade 72 in embodiment 3, and the roller input shaft 711 is in transmission connection with the friction output shaft 39 of the control device of the roller window shade 72.
The working process is as follows: when the window shade 72 needs to be lifted, the manual shifting fork 42 only needs to be slid to the lifting position, the traction rope is pulled, and the forward direction and the reverse direction can be realized; when the window shade 72 needs to be lowered, the manual shifting fork 42 only needs to be slid to the descending position to pull the traction rope, and the forward direction and the reverse direction can be achieved. The pull cord may also be pulled at all times and the shade 72 will reciprocate between the upper and lower limits.
The embodiments described above are only preferred embodiments of the invention and are not exhaustive of the possible implementations of the invention. Any obvious modifications to the above would be obvious to those of ordinary skill in the art, but would not bring the invention so modified beyond the spirit and scope of the present invention.
Claims (10)
1. A control device for a roller blind (72), characterized by:
comprises a shell, a transmission mechanism and a reversing mechanism;
the shell comprises a rear upper cover (15), a lower cover (16), a rear vertical plate (11), a front vertical plate (12) arranged in parallel with the rear vertical plate (11), a left vertical plate (13) connecting the rear vertical plate (11) and the front vertical plate (12), and a right vertical plate (14) connecting the rear vertical plate (11) and the front vertical plate (12);
the transmission mechanism comprises a main shaft (21), a transmission shaft (22) and an input shaft (23) which are arranged between the rear vertical plate (11) and the front vertical plate (12), a transmission wheel (31) fixedly connected with the first end of the main shaft (21), a duplicate gear arranged on one side of the transmission wheel (31), a transmission ratchet wheel (36) arranged on one side of the duplicate gear, an intermediate wheel (32) rotatably connected with the first end of the transmission shaft (22), and a first driving wheel (33) and a second driving wheel (34) which are sequentially and fixedly connected with the first end of the input shaft (23);
the transmission wheel (31) is in transmission connection with the first driving wheel (33) through the intermediate wheel (32);
the duplicate gear is rotationally connected with the main shaft (21);
the dual gears comprise a dual input gear (351) and a dual output ratchet wheel (352);
the duplex input gear (351) is in transmission connection with the second driving wheel (34);
the transmission ratchet wheel (36) is fixedly connected with the main shaft (21);
the reversing mechanism comprises a direction adjusting wheel (37) rotationally linked to the second end of the main shaft (21) and a pawl (6) arranged on the direction adjusting wheel (37).
2. A control device for a roller shade (72) as defined in claim 1, wherein:
the pawl (6) comprises a ratchet column (61) penetrating through the direction adjusting wheel (37), a reversing rod (64) fixedly connected with the top end of the ratchet column (61), a special-shaped block (63) fixedly connected with the lower end of the ratchet column (61) and a pawl spring (62) sleeved on the ratchet column (61);
the reversing rod (64) is arranged on the outer side of the steering wheel (37);
the special-shaped block (63) is arranged on the inner side of the steering wheel (37).
3. A control device for a roller blind (72) according to claim 2, characterized by:
the reversing mechanism further comprises a linkage rod (65) movably connected with the two reversing rods (64) and a spring shock absorber (66) movably connected with one end of the linkage rod (65);
the profile block (63) comprises a slide surface (631) and a non-return surface (632);
the other end of the spring shock absorber (66) is rotationally connected with the steering wheel (37).
4. A control device for a roller blind (72) according to claim 3, characterized by:
the sliding surface (631) is a conical surface or two inclined surfaces;
the non-return surface (632) is a cylindrical surface or two planes.
5. A control device for a roller blind (72) according to claim 4, characterized by:
the control device of the roller blind (72) also comprises a direction adjusting mechanism;
the direction adjusting mechanism comprises a reversing ring (41) sleeved on the outer side of the direction adjusting wheel (37) and a manual shifting fork (42) for controlling the reversing ring (41) to move along the axial direction of the direction adjusting wheel (37);
the reversing ring (41) is rotationally connected with the linkage rod (65);
the manual shifting fork (42) is connected to the left vertical plate (13) in a sliding mode.
6. A control device for a roller blind (72) according to claim 5, characterized by:
the reversing mechanism further comprises an output wheel (38) fixedly connected to the transmission shaft (22);
the output wheel (38) is in transmission connection with the direction adjusting wheel (37).
7. A control device for a roller blind (72) according to claim 6, characterized by:
the control device of the roller blind (72) also comprises an automatic slewing mechanism (5);
the automatic slewing mechanism (5) comprises a mounting seat (51) arranged on the lower cover (16), a sliding block (52), a swinging rod (53), a spring rod (541), a spring sleeve (542), a compression spring (543), a lever (55), a limiting column (56) and a sliding block (43) rotatably connected to the input shaft (23) and the transmission shaft (22);
the limiting column (56) comprises a first limiting column (561) and a second limiting column (562);
the first end of the sliding block (43) is in spiral transmission connection with the transmission shaft (22), the second end of the sliding block (43) is in sliding connection with the driving shaft, and a first driving lever (431) and a second driving lever (432) are arranged on the sliding block (43);
the mounting seat (51) is provided with a strip-shaped guide hole (51), the sliding block (52) is connected with the mounting seat (51) in a sliding way through the guide hole (51),
the sliding shifting block (52) is provided with a first shifting block (521) and a second shifting block (522), and the reversing ring (41) is arranged between the first shifting block (521) and the second shifting block (522);
a swing rod sliding groove (531) is formed in the first end of the swing rod (53); the swing rod (53) is movably connected with the sliding and shifting block (52) through a swing rod sliding groove (531), and the second end of the swing rod (53) is rotatably connected with the mounting seat (51);
the first end of the spring rod (541) is rotatably connected to the middle of the swing rod (53), and the second end of the spring rod (541) is slidably connected with the first end of the spring sleeve (542);
the compression spring (543) is arranged between the spring rod (541) and the spring sleeve (542);
the second end of the spring sleeve (542) is rotatably connected with the first end of the lever (55);
a first limit column (561) and a second limit column (562) are arranged on the base;
the middle part of the lever (55) is rotatably connected with the mounting seat (51), the first end of the lever (55) is arranged between the first limiting column (561) and the second limiting column (562), and the second end of the lever (55) is arranged between the first deflector rod (431) and the second deflector rod (432).
8. A control device for a roller blind (72) according to claim 5, characterized by:
the reversing mechanism further comprises a friction plate (381) fixedly connected with one side of the output wheel (38) and a friction output shaft (39) arranged on one side of the friction plate (381);
the first end of the friction output shaft (39) is rotationally connected with the second end of the transmission shaft (22), and meanwhile, the first end of the friction output shaft (39) is in friction connection with one side of the friction plate (381).
9. A control device for a roller shade (72) as defined in claim 8, wherein:
the reversing mechanism also comprises a plane thrust bearing (391) sleeved on the friction output shaft (39) and a thrust adjusting rod (392);
the plane thrust bearing (391) is connected with the friction output shaft (39) in a rotating way;
one end of the thrust adjusting rod (392) presses the plane thrust bearing (391) against the friction output shaft (39).
10. A window blind (72), characterized by:
control device comprising a roller blind (72) according to any of claims 1 to 9, a blind (72) and a roller magazine (71) for storing said blind (72);
a winding roller input shaft (711) is arranged at one end of the pipe rolling bin;
the winding roller input shaft (711) is in transmission linkage with the direction adjusting wheel (37), the transmission shaft (22) or the friction output shaft (39).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310239427.6A CN115929855B (en) | 2023-03-14 | 2023-03-14 | Roller blind control device and blind |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310239427.6A CN115929855B (en) | 2023-03-14 | 2023-03-14 | Roller blind control device and blind |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115929855A true CN115929855A (en) | 2023-04-07 |
| CN115929855B CN115929855B (en) | 2023-05-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310239427.6A Active CN115929855B (en) | 2023-03-14 | 2023-03-14 | Roller blind control device and blind |
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| US20040108080A1 (en) * | 2002-12-04 | 2004-06-10 | Nien Made Enterprise Co., Ltd. | Blind lift rod control lock |
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| CN104594785A (en) * | 2014-11-27 | 2015-05-06 | 杭州欧卡索拉科技有限公司 | Sequential control roll system for variable-pitch window blind provided with built-in hollow glass |
| CN105286467A (en) * | 2014-06-09 | 2016-02-03 | 德侑股份有限公司 | Window Shade and Actuating System Thereof |
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2023
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Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB191313303A (en) * | 1913-06-09 | 1914-01-08 | Edward Ellis Harris | Improvements in Window Shade Controlling Devices. |
| CN2067313U (en) * | 1990-04-17 | 1990-12-12 | 杨兴雅 | Rolling-up curtain |
| JPH04261994A (en) * | 1991-02-18 | 1992-09-17 | Bunka Shutter Co Ltd | Spring winding fine adjusting device for lightweight shutter |
| US20040108080A1 (en) * | 2002-12-04 | 2004-06-10 | Nien Made Enterprise Co., Ltd. | Blind lift rod control lock |
| GB0917121D0 (en) * | 2007-03-21 | 2009-11-11 | Snap On Tools Corp | Dual pawl ratchet mechanism and reversing method |
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| CN105286467A (en) * | 2014-06-09 | 2016-02-03 | 德侑股份有限公司 | Window Shade and Actuating System Thereof |
| EP3152380A2 (en) * | 2014-06-09 | 2017-04-12 | Teh Yor Co., Ltd. | Window shade, actuating system thereof, and method of operating the same |
| CN104594785A (en) * | 2014-11-27 | 2015-05-06 | 杭州欧卡索拉科技有限公司 | Sequential control roll system for variable-pitch window blind provided with built-in hollow glass |
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| Publication number | Publication date |
|---|---|
| CN115929855B (en) | 2023-05-09 |
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