CN115929855B - Roller blind control device and blind - Google Patents
Roller blind control device and blind Download PDFInfo
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- CN115929855B CN115929855B CN202310239427.6A CN202310239427A CN115929855B CN 115929855 B CN115929855 B CN 115929855B CN 202310239427 A CN202310239427 A CN 202310239427A CN 115929855 B CN115929855 B CN 115929855B
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Abstract
The invention discloses a roller blind control device and a blind, comprising a shell, a transmission mechanism and a reversing mechanism; the transmission mechanism comprises a main shaft, a transmission shaft, an input shaft, a transmission wheel, a duplex gear, a transmission ratchet wheel, a middle wheel, a first driving wheel and a second driving wheel, wherein the main shaft, the transmission shaft and the input shaft are arranged between the rear vertical plate and the front vertical plate; the reversing mechanism comprises a steering wheel and a pawl arranged on the steering wheel; the number of the pawls is two, and the pawls are respectively matched with the duplex output ratchet wheel and the transmission ratchet wheel to form a ratchet mechanism, so that the functions of the power output by the roller blind control device and the unique movement direction of the blind are realized; meanwhile, the technical effects that the pawl direction is changed, and the power direction output by the roller blind control device and the lifting of the blind are also changed are achieved.
Description
Technical Field
The invention belongs to the field of roller shades, and particularly relates to a roller shade control device.
Background
The window shade plays an important role in the production and the living of people, indoor light can be adjusted by using the window shade, and lighting or shading is carried out according to the requirements. When the indoor light is in rest, the light is required to be darker, and when the indoor light is required to be brighter when working and learning, the shading area of the shading curtain can be used for changing and adjusting the intensity of indoor light, so that the generation of chord light is avoided.
In the teaching process, places such as classrooms, offices, gymnasiums and the like tend to have larger window areas, shading requirements are also more outstanding, the teaching, offices and sports are often subjected to direct sunlight, glare is formed to influence the teaching office quality, and therefore indoor light needs to be frequently regulated to meet indoor light needs. Roller shades are widely installed in schools at present, and the aim of lifting the curtain is fulfilled by pulling the adjusting ropes in the forward direction and the reverse direction. CN202559997U discloses a traction device of hollow glass with built-in curtain, comprising a shutter overturning inner handle arranged in a frame, a shutter overturning outer handle arranged outside the frame, and a shutter overturning inner handle and a shutter overturning outer handle which are correspondingly matched in position; the blade overturning component comprises a roller support arranged on the frame cross beam, an overturning roller in close fit connection with the 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; 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 a handle in hundred She Fanzhuai in a reciprocating transmission manner through a connecting push rod, and the gear set is connected with a turnover roller through a gear output shaft, so that the function of shading adjustment is realized. CN213597842U discloses an electric lifting type window shade, through setting up motor, switching-over drive mechanism and reel drive window shade lift, wherein motor and reel set up side by side, and the drive shaft of motor is connected with switching-over drive mechanism's power input, and the reel is connected with switching-over drive mechanism's power take off end, further links to each other stroke control mechanism and reel, controls the stroke that the rotatory drive bracket of reel risees, and wherein switching-over drive mechanism changes power transmission direction, makes the window shade more stable at the in-process focus of lifting.
In the above technology, when the curtain is adjusted, the movement direction of the hauling rope corresponds to the movement direction of the curtain or the window shade only. In the teaching process of schools, teaching activities and inter-class activities are alternately performed, a window shade is required to be properly put down to reduce or avoid strong light from entering, indoor illumination intensity is required to be properly enhanced during rest between classes, so that the window shade is required to be frequently adjusted, a plurality of users often operate by mistake when in use, the roller of the roller window shade exceeds the limit to cause faults, and the direction of the adjusting rope is required to be changed again when the window shade is adjusted due to the fact that the adjusting rope is uniquely corresponding to the movement direction of the window shade; in addition, when the window shade is jammed or reaches a limit position, the control device is damaged by pulling the adjusting rope.
Disclosure of Invention
The invention aims to provide a roller blind control device, wherein the movement direction of a blind can be moved according to a specified direction no matter whether an adjusting rope is in a forward direction or a reverse direction.
In order to achieve the above 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 connected with the rear vertical plate and the front vertical plate, and a right vertical plate connected with the rear vertical plate and the front vertical plate;
the transmission mechanism comprises a main shaft, a transmission shaft, an input shaft, a transmission wheel, a duplex gear, a transmission ratchet wheel, a middle wheel, a first driving wheel and a second driving wheel, wherein the main shaft, the transmission shaft and the input shaft are arranged between the rear vertical plate and the front vertical plate;
the driving wheel is in driving connection with the first driving wheel through the middle wheel;
the duplicate 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 steering wheel rotationally linked to the second end of the main shaft and a pawl arranged on the steering wheel;
the number of the pawls is two, and the pawls are respectively matched with the duplex output ratchet wheel and the transmission ratchet wheel to form a ratchet mechanism;
the pawl comprises a 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 lever 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.
Further, the reversing mechanism further comprises a linkage rod movably connected with the two reversing rods and a spring damper movably connected with one end of the linkage rod;
the special-shaped block comprises a sliding surface and a non-return surface;
the other end of the spring damper is rotationally linked with the steering wheel.
The reversing lever is arranged on an extension line of an intersection line of the sliding surface and the non-return surface.
Further, the sliding surface is a conical surface or two inclined surfaces;
the non-return surface is a cylindrical surface or two plane surfaces.
Further, the control device of the roller blind also comprises a direction adjusting mechanism;
the steering mechanism comprises a reversing ring sleeved on the outer side of the steering wheel and a manual shifting fork for controlling the reversing ring to axially move along the steering 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.
Further, the reversing mechanism further comprises an output wheel fixedly connected to the transmission shaft;
the output wheel is in transmission connection with the steering wheel.
Further, the control device of the roller blind also comprises an automatic rotation mechanism;
the automatic rotation mechanism comprises a mounting seat, a sliding block, a swinging rod, a spring sleeve, a compression spring, a lever, a limit column and a sliding block which are arranged on the lower cover and are rotatably connected with the input shaft and the transmission shaft;
the limiting columns comprise a first limiting column and a second limiting column;
the first limit posts and the second limit posts are arranged at intervals, and the local distance between the first limit posts and the second limit posts 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;
the first end of the swing rod is provided with a swing rod chute; the swing rod is movably connected with the sliding block through a swing rod chute, and the second end of the swing rod is rotatably connected with the mounting seat;
the first end of the spring rod is rotationally 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 rotationally connected with the first end of the lever;
the mounting seat is provided with a first limit column and a second limit column;
the middle part of the lever is rotationally connected with the installed seat, the first end of the lever is arranged between the first limit post and the second limit post, and the second end of the lever is arranged between the first deflector rod and the second deflector rod.
Further, the reversing mechanism further 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 rotationally 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.
Further, the reversing mechanism also comprises a plane thrust bearing sleeved on the friction output shaft and a thrust adjusting rod;
the plane thrust bearing is rotationally connected with the friction output shaft;
and one end of the thrust adjusting rod compresses the plane thrust bearing on the friction output shaft.
A window shade comprising any one of the roller shade control devices, a window shade and a roller bin for winding and unwinding the window shade;
one end of the tube rolling bin is provided with a rolling roller input shaft;
the winding roller input shaft is in transmission connection with the steering wheel, the transmission shaft or the friction output shaft.
Compared with the prior art, the invention has the following beneficial effects:
according to the invention, the power of the input shaft is transmitted to the transmission ratchet wheel through the first driving wheel, the middle wheel, the driving wheel and the main shaft, and meanwhile, 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 effects that the rotation direction of the duplex output ratchet wheel is opposite to the rotation direction of the transmission ratchet wheel, the rotation angular velocity is equal, and the same torque output by the roller blind control device is ensured; 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 rotates reversely, and the duplex output ratchet rotates positively; when the two pawls on the steering wheel are forward, namely the pawls are driven to rotate forward, one of the duplex output ratchet wheel and the transmission ratchet wheel which rotates forward is driven by the pawls to rotate forward and transmit power, and the other of the duplex output ratchet wheel and the transmission ratchet wheel which rotates backward slides with the pawls and does not transmit power; similarly, when the two pawls on the steering wheel are in reverse directions, one of the duplex output ratchet wheel and the transmission ratchet wheel which rotates in reverse directions drives the steering wheel to rotate in reverse directions through the pawls and transmit power, and the other of the duplex output ratchet wheel and the transmission ratchet wheel which rotates in forward directions slides with the pawls and does not transmit power; so as long as the pawl direction is determined, no matter whether the input power is forward or reverse, the direction of the power output by the roller blind control device is unique; the pawl direction is changed, so the power direction output by the roller blind control device is also changed.
The reversing rod is arranged in the pawl, and the profiled 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 roller blind control device is realized.
The synchronization of the adjustment directions of the two pawls is ensured through a linkage rod of the reversing mechanism; the switching speed of the linkage rod can be guaranteed through the arrangement of the spring shock absorber, and the abnormal block is prevented from being damaged.
The reversing ring is linked with the linkage rod, the sliding direction of the reversing ring can be controlled by sliding the 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 in power direction control.
The power of the steering wheel is output through the transmission shaft through the output wheel fixedly connected to the transmission shaft, meanwhile, the transmission shaft is provided with transmission external threads, and the first end of the sliding block is provided with transmission internal threads, so that the spiral transmission of the transmission shaft and the first end of the flow 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, and the second end of the lever can be poked, so that the spring sleeve and the spring rod are driven to slide, and the compression spring is compressed; when the first shifting lever or the second shifting lever shifts the lever to be parallel to the spring lever, the compression spring is compressed to be shortest, the second end of the lever is continuously shifted, the compression spring rapidly separates the spring sleeve from the spring lever to two sides, the first end of the lever is abutted on the first limit column or the second limit column, and the second end of the lever is separated from the first shifting lever or the second shifting lever and moves 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 block to slide along the guide hole, and the first shifting block and the second shifting block on the sliding block shift the reversing ring from one limit position to the other limit position, so that the steering direction of the steering wheel is changed, the automatic rotation function of the control device is realized, and the control device is prevented from being damaged by continuous operation after the window shade reaches the limit position.
When the symmetry plane of the first shifting lever and the second shifting lever are overlapped with the symmetry plane of the first limiting column and the second limiting column, the first end of the lever can swing between the first limiting column and the second limiting column freely, and the second end of the lever swings between the first shifting lever and the second shifting lever, so that when the sliding block is positioned at the middle position, the manual shifting fork can slide in a throwing way, and the direction of output torque can be changed at any position.
The friction connection of friction disc and friction output shaft through the positive pressure between the thrust regulation pole and the plane thrust bearing regulation, can adjust the moment of torsion upper limit of output, solves the problem of preventing damage controlling means and window shade.
Drawings
FIG. 1 is a schematic view showing the structure of a window shade according to an embodiment 4 of the present invention;
FIG. 2 is a schematic structural diagram of embodiment 5 of the present invention;
FIG. 3 is a cross-sectional view of a roller shade control device of the present invention;
FIG. 4 is a cross-sectional view taken along line A-A of FIG. 3 in accordance with the present invention;
FIG. 5 is a partial cross-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 FIG. 6 in accordance with the present invention;
FIG. 8 is a perspective view of a pawl of the present invention;
fig. 9 is a bottom view of the pawl of the present invention.
FIG. 10 is a schematic structural diagram of a mechanism state I of the automatic swing mechanism of the present invention;
FIG. 11 is a schematic diagram of the mechanism switching process I of the automatic slewing mechanism of the present invention;
FIG. 12 is a schematic diagram of a mechanism switching process II of the automatic swing mechanism of the present invention;
FIG. 13 is a schematic structural diagram of a mechanism state II of the automatic swing mechanism of the present invention;
in the drawings: the device comprises a rear vertical plate 11, a front vertical plate 12, a left vertical plate 13, a right vertical plate 14, a top cover 15, a bottom cover 16, a main shaft 21, a transmission shaft 22, an input shaft 23, a transmission wheel 31, a middle wheel 32, a first transmission wheel 33, a second transmission wheel 34, a double input gear 351, a double output ratchet 352, a transmission ratchet 36, a direction-adjusting wheel 37, a output wheel 38, a friction plate 381, a friction output shaft 39, a 391 plane thrust bearing, a push adjusting rod 392, a reversing ring 41, a manual shifting fork 42, a sliding block 43, a first shifting lever 431, a second shifting lever 432, a 5 automatic rotating mechanism 51, a mounting seat 511, a guide hole 52 sliding shifting block 521, a first shifting block 522, a second shifting block 53, a swing rod 531, a swing rod 541, a spring 542, a spring sleeve 543 compression spring, a 55 lever 56 spacing column 561 first spacing column 562 second spacing column, a 6 pawl 61 pawl column 62 pawl spring, 63 special-shaped blocks, sliding surfaces 632 check surfaces, 64 levers 65 levers 66, 66 spring bins, 71, a shock absorbing roller shutter input shafts 72.
Description of the embodiments
The present invention is further described in detail below with reference to the accompanying drawings, in this 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, etc., and the shaft is provided with a stepped shaft, a key slot, etc. according to actual needs for positioning, and in this embodiment, the connection manner, the positioning manner, the size design, etc. are not described in detail, and are well known to those skilled in the art.
Example 1: as shown in fig. 3-5, a roller shade 72 control device includes a housing, a transmission mechanism, and a reversing mechanism; the housing 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, an input shaft 23, a transmission wheel 31, a duplex gear, a transmission ratchet 36, a middle wheel 32, a first driving wheel 33 and a second driving wheel 34, wherein the main shaft 21, the transmission shaft 22 and the input shaft 23 are arranged between the rear vertical plate 11 and the front vertical plate 12; 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 perpendicular bisector of the axis connecting line of the main shaft 21 and the input shaft 23; the driving wheel 31 is in driving 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 36 is fixedly connected with the main shaft 21; the reversing mechanism comprises a steering wheel 37 rotationally linked to the second end of the main shaft 21 and a pawl 6 arranged on the steering wheel 37; the number of the pawls 6 is two, and the pawls are respectively matched with the duplex output ratchet 352 and the transmission ratchet 36 to form a ratchet mechanism; the dual output ratchet 352 and the transmission ratchet 36 are disposed in the cavity of the steering wheel 37, the second end of the steering wheel 37 penetrates through the front vertical plate 12 and is rotationally linked with the front vertical plate 12, and the second end of the steering wheel 37 is a power output end.
The working process comprises the following steps: the input shaft 23 inputs power in the forward direction, 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 driving wheel 31 to rotate in the forward direction through the middle wheel 32, the driving wheel 31 drives the main shaft 21 to rotate in the forward direction and drives the driving 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 drives the duplex output ratchet wheel 352 to rotate in the reverse direction because the duplex input gear is rotationally connected between the driving wheel 31 and the driving ratchet wheel 36; because the transmission ratio of the duplex output ratchet 352 to the transmission ratchet 36 is 1:1, the rotation speeds of the duplex output ratchet 352 and the transmission ratchet 36 are the same; the speed ratio of the power input end and the power output end is constant; because the two pawls 6 on the steering wheel 37 are both positive, the pawls 6 can only be driven to rotate in the positive direction, so that the dual output ratchet 352 and the pawls 6 slide and cannot transmit power, and the transmission ratchet 36 and the pawls 6 are clamped and transmit torque to drive the steering wheel 37 to rotate in the positive direction; similarly, power is reversely input through the input shaft 23, the duplex output ratchet wheel 352 rotates in the forward direction, the transmission ratchet wheel 36 rotates in the reverse direction, two pawls 6 on the steering wheel 37 are in the forward direction, the duplex output ratchet wheel 352 is clamped with the pawls 6 and transmits torque to drive the steering wheel 37 to rotate in the forward direction, the transmission ratchet wheel 36 and the pawls 6 slide, power cannot be transmitted, and the steering wheel 37 cannot be prevented from rotating in the forward direction; in summary, when the two pawls 6 are both forward, the reversing mechanism outputs power in the forward direction regardless of the forward rotation or reverse rotation of the input shaft 23. Similarly, when both pawls 6 are reversed, the reversing mechanism outputs power in the reverse direction regardless of the forward rotation or reverse rotation of the input shaft 23.
Example 2: as shown in fig. 3-8, a roller shade 72 control device includes a housing, a transmission mechanism, a reversing mechanism, and a direction-adjusting mechanism; the housing 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, an input shaft 23, a transmission wheel 31, a duplex gear, a transmission ratchet 36, a middle wheel 32, a first driving wheel 33 and a second driving wheel 34, wherein the main shaft 21, the transmission shaft 22 and the input shaft 23 are arranged between the rear vertical plate 11 and the front vertical plate 12; 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 perpendicular bisector of the axis connecting line of the main shaft 21 and the input shaft 23; the driving wheel 31 is in driving 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 36 is fixedly connected with the main shaft 21; the reversing mechanism comprises a steering wheel 37 rotationally linked to the second end of the main shaft 21, two pawls 6 arranged on the steering wheel 37, a linkage rod 65 movably connected with the two pawls 6, an output wheel 38 fixedly connected to the transmission shaft 22 and a spring damper 66 movably connected with one end of the linkage rod 65; the other end of the spring damper 66 is rotationally linked to 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 a ratchet column 61 penetrating through the steering 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 lever 64 is arranged outside the steering wheel 37; the two ends of the linkage rod 65 are respectively and rotatably connected with the two reversing rods 64; the profiled block 63 is arranged inside the steering wheel 37; the pawl spring 62 is arranged between the profiled block 63 and the steering wheel 37; the special-shaped block 63 comprises a conical sliding surface 631 and a cylindrical non-return surface 632; the other end of the spring damper 66 is rotationally linked to the steering wheel 37; the steering mechanism comprises a reversing ring 41 sleeved on the outer side of the steering wheel 37 and a manual shifting fork 42 for controlling the reversing ring 41 to axially move along the steering 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 the cavity of the steering wheel 37, and the output wheel 38 is in transmission connection with the steering wheel 37; one end of the transmission shaft 22 penetrates the front vertical plate 12 or the rear vertical plate 11 to form a moment output end of a control device of the roller blind 72.
The working process comprises the following steps: the input shaft 23 inputs power in the forward direction, 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 driving wheel 31 to rotate in the forward direction through the middle wheel 32, the driving wheel 31 drives the main shaft 21 to rotate in the forward direction and drives the driving 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 drives the duplex output ratchet wheel 352 to rotate in the reverse direction because the duplex input gear is rotationally connected between the driving wheel 31 and the driving ratchet wheel 36; because the transmission ratio of the duplex output ratchet 352 to the transmission ratchet 36 is 1:1, the rotation speeds of the duplex output ratchet 352 and the transmission ratchet 36 are the same; the speed ratio of the power input end and the power output end is constant; because the conical surfaces on the two special-shaped blocks 63 are in the same direction and face forward, when the transmission ratchet 36 rotates forward, the conical surface type sliding surface 631 corresponding to the transmission ratchet 36 is not stressed, the cylindrical check surface 632 is stressed and cannot press the special-shaped blocks 63 upwards, the special-shaped blocks 63 can only be driven to rotate forward, the duplex output ratchet 352 reversely rotates, the conical surface type sliding 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 352, the special-shaped blocks 63 slide relative to the steering wheel 37, the duplex output ratchet 352 reversely rotates and cannot prevent the steering wheel 37 from rotating forward, and therefore the transmission ratchet 36 is clamped with the special-shaped blocks 63 and transmits torque, and the steering wheel 37 rotates forward; 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 steering wheel 37 cannot be prevented from rotating in the forward direction; in summary, when the sliding surfaces 631 on the two profiled blocks 63 are both forward, the reversing mechanism outputs power in both forward and reverse directions, regardless of whether the input shaft 23 is rotating forward or rotating backward. Similarly, when both pawls 6 are reversed, the reversing mechanism outputs power in the reverse direction regardless of the forward rotation or reverse rotation of the input shaft 23. When the direction of the output torque is required to be changed, only the manual shifting fork 42 is required 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 is provided with a linkage rod 65 to drive two reversing rods 64 to rotate around the ratchet posts 61 which are respectively linked, the special-shaped block 63 fixedly linked with the ratchet posts 61 also rotates, and the sliding surface 631 on the special-shaped block 63 faces to the reverse direction; in the process of rotating the reversing lever 64, the spring damper 66 is compressed and then rapidly relaxed, so that the special-shaped block 63 is driven to rapidly switch the direction of the sliding surface 631, and meanwhile, the breaking sense in the switching process is obvious.
Example 3: like example 2, fig. 3-13 differ in that: 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 simultaneously, the first end of the friction output shaft 39 is in friction connection with one side of the friction plate 381; the planar thrust bearing 391 is rotatably coupled to the friction output shaft 39; one end of the thrust adjustment rod 392 presses the planar thrust bearing 391 against the friction output shaft 39; the control device of the roller blind 72 further comprises an automatic rotation mechanism 5; the automatic rotation mechanism 5 comprises a mounting seat 51, a sliding block 52, a swinging 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, which are arranged on the lower cover 16; the limit posts 56 include a first limit post 561 and a second limit post 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 deflector rod 431 and a second deflector rod 432 are arranged on the sliding block 43; when the symmetry plane of the first deflector rod 431 and the second deflector rod 432 is coincident with the symmetry plane of the first limit post 561 and the second limit post 562, the first end of the lever 55 can freely swing between the first limit post 561 and the second limit post 562, and the second end of the lever 55 swings between the first deflector rod 431 and the second deflector rod 432; the mounting seat 51 is provided with a strip-shaped guide hole 511, the sliding block 52 is slidably connected with the mounting seat 51 through the guide hole 511, the sliding 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 first end of the swing rod 53 is provided with a swing rod sliding groove 531; the swing rod 53 is movably connected with the sliding block 52 through a swing rod chute 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 to 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 limit column 561 and a second limit column 562 are arranged on the mounting seat 51; the middle part of the lever 55 is rotatably connected with the installed seat 51, a first end of the lever 55 is arranged between the first limit column 561 and the second limit column 562, and a second end of the lever 55 is arranged between the first deflector rod 431 and the second deflector rod 432.
The working process comprises the following steps: as shown in fig. 3 to 13, similar to example 2, the difference is that: the present embodiment can realize 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 profiled block 63 is forward, the reversing ring 41 is located at the reverse output position, the steering wheel 37 rotates forward, the steering wheel 37 drives the output wheel 38 to rotate reversely, the output wheel 38 drives the transmission shaft 22 to rotate reversely, and the transmission shaft 22 drives the sliding block 43 to move in the alpha direction in a spiral transmission manner; when the first deflector 431 contacts the second end of the lever 55, the first end of the lever 55 abuts against the second limiting post 562; the symmetry planes of the first deflector rod 431 and the second deflector rod 432 are already coincident with the symmetry planes of the first limit post 561 and the second limit post 562 and separated again; the sliding block 43 continuously moves towards the alpha direction, the first deflector rod 431 dials the lever 55 to be separated from the second limiting column 562, and then the spring sleeve 542 and the spring rod 541 are driven to slide, and the compression spring 543 compresses and 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 continuously stirred, the compression spring 543 rapidly separates the spring sleeve 542 and the spring rod 541 from both sides, the first end of the lever 55 is abutted against the first limit post 561, the second end of the lever 55 is separated from the first deflector rod 431, the spring sleeve 542 and the spring rod 541 are continuously separated from both sides, the transfer speed slides from the reverse output position to the forward output position along the guide hole 511, meanwhile, the first deflector 521 stirs the reversing ring 41 to axially slide along the steering wheel 37, the manual fork 42 moves along the reversing ring 41, the reversing rod 64 drives the special-shaped block 63 to reverse, the sliding surface 631 is changed from forward to reverse, the steering wheel 37 is changed from forward rotation to reverse rotation, the output wheel 38 is changed to forward rotation, the sliding block 43 moves in reverse direction in the alpha direction, when the second deflector rod 432 contacts the second end of the lever 55, the first end of the lever 55 is abutted against the first limit post 561, the symmetrical surfaces 561 and the second deflector rod 432 are overlapped with the first limit post 561 and the second limit post 562 again separated symmetrically; the sliding block 43 continuously moves reversely in the alpha direction, the second deflector rod 432 dials the lever 55 to be separated from the first limit column 561, and then the spring sleeve 542 and the spring rod 541 are driven to slide, and the compression spring 543 compresses and compresses; when the lever 55 is parallel to the spring rod 541, the compression spring 543 compresses to the shortest, the second end of the lever 55 is continuously stirred, the compression spring 543 rapidly separates the spring sleeve 542 and the spring rod 541 to two sides, the first end of the lever 55 is abutted against the second limiting column 562, the second end of the lever 55 is separated from the second deflector rod 432, the spring sleeve 542 and the spring rod 541 are continuously separated to two sides, the transfer speed slides from the reverse output position to the forward output position along the guide hole 511, meanwhile, the second deflector 522 stirs the reversing ring 41 to axially slide along the reversing wheel 37, the manual fork 42 moves along the reversing ring 41, the reversing rod 64 drives the special-shaped block 63 to reverse, the sliding surface 631 is changed from reverse to forward, the reversing wheel 37 is changed from reverse rotation to forward rotation, the output wheel 38 is changed to reverse rotation, and the forward and reverse switching of the output wheel 38 is completed for one cycle. The output wheel 38 drives the friction output shaft 39 to rotate through the friction plate 381, positive pressure between the friction output shafts 39 is adjusted through the adjusting rod, so that maximum output torque of the friction output shafts 39 is adjusted, when required torque of the friction output shafts 39 exceeds maximum torque between the friction plate 381 and the friction output shafts 39, the friction output shafts 39 and the output wheels 38 rotate relatively, sliding friction force acts between the friction output shafts 39 and the friction output shafts 38, and the friction output shafts 39 stop rotating, so that a control device of the roller blind 72 is prevented from being damaged.
Example 4: as shown in fig. 1 and 3 to 5, a window shade 72 includes a roll screen housing 71, a window shade 72, and two sets of control devices for the roll screen 72 in embodiment 1; the torque output by the output shafts of the control devices of the roller shades 72 of the two groups 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 respectively in transmission connection with the second ends of the output wheels 38 of the control devices of the roller shades 72 of the two groups.
The working process comprises the following steps: when the window shade 72 needs to be retracted, a roller window shade 72 control device with one group of output torque of forward rotation is started; when it is desired to open the shade 72, another set of roller shades 72 with opposite output torque is activated.
Example 5: as shown in fig. 2 to 13, a window shade 72 includes a roller housing 71, a window shade 72, and a control device for the roller window shade 72 of embodiment 3, wherein the roller input shaft 711 is in driving connection with the friction output shaft 39 of the control device for the roller window shade 72.
The working process comprises the following steps: when the window shade 72 needs to be lifted, the manual shifting fork 42 is only required to be slid to the lifting position, and the traction rope is pulled to move forward and backward; when the window shade 72 needs to be lowered, the manual shifting fork 42 is only required to be slid to the lowered position, and the traction rope is pulled to move forward and backward. The pull cord may be pulled all the way and the shade 72 will reciprocate between the upper and lower extreme positions.
The above described embodiments are only preferred examples of the invention and are not exhaustive of the possible implementations of the invention. Any obvious modifications thereof, which would be apparent to those skilled in the art without departing from the principles and spirit of the present invention, should be considered to be within the scope of the appended claims.
Claims (9)
1. A control device for roller shades (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) which is arranged in parallel with the rear vertical plate (11), a left vertical plate (13) which is connected with the rear vertical plate (11) and the front vertical plate (12) and a right vertical plate (14) which is connected with 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), a transmission wheel (31), a duplex gear, a transmission ratchet wheel (36), a middle wheel (32), a first driving wheel (33) and a second driving wheel (34), wherein the main shaft (21), the transmission shaft (22) and the input shaft (23) are arranged between the rear vertical plate (11) and the front vertical plate (12), the transmission wheel (31) is fixedly connected with the first end of the main shaft (21), the duplex gear is arranged on one side of the transmission wheel (31), the transmission ratchet wheel (36) is arranged on one side of the duplex gear, the middle wheel (32) is rotatably connected with the first end of the transmission shaft (22), and the first driving wheel (33) and the second driving wheel (34) are sequentially and fixedly connected with the first end of the input shaft (23);
the driving wheel (31) is in transmission connection with the first driving wheel (33) through the middle wheel (32);
the duplicate gear is rotationally connected with the main shaft (21);
the duplex gear comprises a duplex input gear (351) and a duplex 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 steering wheel (37) rotationally linked to the second end of the main shaft (21), and a pawl (6) arranged on the steering wheel (37);
the pawl (6) comprises a ratchet column (61) penetrating through the steering 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 lever (64) is arranged outside the steering wheel (37);
the profiled block (63) is arranged inside the steering wheel (37).
2. A roller shade (72) control device according to claim 1, wherein:
the reversing mechanism further comprises a linkage rod (65) movably connected with the two reversing rods (64) and a spring damper (66) movably connected with one end of the linkage rod (65);
the profiled block (63) comprises a sliding surface (631) and a non-return surface (632);
the other end of the spring damper (66) is rotationally linked to the steering wheel (37).
3. A roller shade (72) control device according to claim 2, wherein:
the sliding surface (631) is a conical surface or two inclined surfaces;
the non-return surface (632) is a cylindrical surface or two flat surfaces.
4. A roller shade (72) control device according to claim 3, wherein:
the control device of the roller blind (72) further comprises a direction adjusting mechanism;
the steering mechanism comprises a reversing ring (41) sleeved on the outer side of the steering wheel (37) and a manual shifting fork (42) for controlling the reversing ring (41) to axially move along the steering 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.
5. A roller shade (72) control device according to claim 4, wherein:
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 steering wheel (37).
6. A roller shade (72) control device according to claim 5, wherein:
the control device of the roller blind (72) further comprises an automatic rotation mechanism (5);
the automatic rotation mechanism (5) comprises a mounting seat (51), a sliding block (52), a swinging 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) which is rotatably connected to the input shaft (23) and the transmission shaft (22) which are arranged on the lower cover (16);
the limiting posts (56) comprise a first limiting post (561) and a second limiting post (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 deflector rod (431) and a second deflector rod (432) are arranged on the sliding block (43);
the mounting seat (51) is provided with a strip-shaped guide hole (511), the sliding block (52) is in sliding connection with the mounting seat (51) through the guide hole,
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 first end of the swing rod (53) is provided with a swing rod sliding groove (531); the swing rod (53) is movably connected with the sliding block (52) through a swing rod chute (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 rotationally connected to the middle part 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 rotationally connected with the first end of the lever (55);
a first limit column (561) and a second limit column (562) are arranged on the mounting seat (51);
the middle part of lever (55) is connected with installed seat (51) rotation, lever (55) first end sets up between first spacing post (561) and second spacing post (562), lever (55) second end sets up between first driving lever (431) and second driving lever (432).
7. A roller shade (72) control device according to claim 6, wherein:
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).
8. A roller shade (72) control device according to claim 7, 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 planar thrust bearing (391) is rotationally connected to the friction output shaft (39);
one end of the thrust adjusting rod (392) presses the planar thrust bearing (391) against the friction output shaft (39).
9. A window shade (72) characterized by:
a control device comprising a roller blind (72) according to any one of claims 1-8, a blind (72) and a roller housing (71) for retracting the blind (72);
one end of the roller bin is provided with a roller input shaft (711);
the roller input shaft (711) is in transmission connection with the steering 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 |
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| CN115929855A CN115929855A (en) | 2023-04-07 |
| CN115929855B true 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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| 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 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW567811U (en) * | 2002-12-04 | 2003-12-21 | Nien Made Entpr Co Ltd | Curtain scroll stopper |
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| 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 |
| 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 |
|---|---|
| CN115929855A (en) | 2023-04-07 |
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