CN115929855B - Roller blind control device and blind - Google Patents

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

A control device for a roller shade and the shade

technical field

The invention belongs to the field of roller shades, in particular to a control device for roller shades.

Background technique

Blackout curtains have played an important role in people's production and life, and the indoor light can be adjusted by using the blackout curtains, and lighting or shading can be carried out as required. For example, when resting, the light is required to be darker, and when working and studying, the light is required to be brighter. At this time, the shading area of the blackout curtain can be used to adjust the intensity of the indoor light to avoid stringy light.

During the teaching process, classrooms, offices, gymnasiums and other places often have large window areas, and the need for shading is also more prominent. During teaching, office work and sports, they are often exposed to direct sunlight, forming glare and affecting the quality of teaching and office work. The light is adjusted to meet the indoor lighting needs. Roller shades are widely installed in schools at present, and the purpose of lifting the curtains is realized by pulling the adjustment rope in the forward and reverse directions. CN202559997U discloses a traction device for hollow glass with built-in curtains, which includes a louver turning inner handle located inside the frame, and a louver turning outer handle located outside the frame, the positions of the louver turning inner handle and the louver turning outer handle are correspondingly matched; The blade turning part includes a roller support arranged on the beam of the frame, a turning roller tightly connected with the gear set arranged on the frame, and passing through the roller support and being wound on the turning roller and connected with the turning roller The flipping ladder rope linked with the flipping rollers; the transmission device, the transmission device includes a gear set and a drive rack, the teeth of one end of the drive rack are meshed with the gear set, and the other end reciprocates with the louver flip inner handle through the connection push rod Transmission connection, the gear set is connected with the turning roller through the gear output shaft, so as to realize the function of shading adjustment. CN213597842U discloses an electric lifting type shading curtain, which is driven by setting a motor, a reversing transmission mechanism and a reel to lift the shading curtain, wherein the motor and the reel are arranged side by side, and the drive shaft of the motor is connected to the power input end of the reversing transmission mechanism , the reel is connected to the power output end of the reversing transmission mechanism, and the stroke control mechanism is further connected to the reel to control the stroke of the reel rotating and driving the bracket to rise and fall. The center of gravity is more stable during the process.

In the above technology, when the curtain is adjusted, the movement direction of the traction rope is uniquely corresponding to the movement direction of the curtain or the blackout curtain. During the teaching process of the school, teaching activities and recess activities are carried out alternately. During teaching, it is necessary to properly lower the blackout curtains to reduce or avoid strong light from entering. During breaks, it is necessary to properly increase the indoor light intensity, so the blackout curtains need to be adjusted frequently , and many users often make misoperations when using it, causing the roller of the roller blind to exceed the limit and malfunction, and because the adjustment rope is uniquely corresponding to the direction of movement of the blind, it is often reversed when adjusting the blind. It is necessary to re-transform the direction of the adjustment rope; in addition, when the shade is stuck or reaches the limit position, continuing to pull the adjustment rope will also cause damage to the control device.

Contents of the invention

The present invention aims to provide a control device for roller shades, no matter whether the adjustment rope is forward or reverse, the movement direction of the shades can be moved in a specified direction.

In order to achieve the above object, the technical scheme that the present invention takes is as follows:

A control device for roller shades includes a housing, a transmission mechanism and a reversing mechanism;

The housing includes a rear upper cover, a lower cover, a rear vertical plate, a front vertical plate arranged parallel to the rear vertical plate, a left vertical plate connecting the rear vertical plate and the front vertical plate, and a left vertical plate connected to the rear vertical plate. a vertical panel and the right vertical panel of said front vertical panel;

The transmission mechanism includes a main shaft arranged between the rear vertical board and the front vertical board, a transmission shaft and an input shaft, a transmission wheel fixedly connected to the first end of the main shaft, and a transmission wheel arranged on one side of the transmission wheel. A double gear, a transmission ratchet arranged on one side of the double gear, an intermediate wheel rotatably connected to the first end of the transmission shaft, and a first driving wheel and a second driving wheel fixedly connected to the first end of the input shaft in turn. wheel;

The transmission wheel is in transmission connection with the first driving wheel through the intermediate wheel;

The duplex gear is rotatably connected to the main shaft;

The dual gears include a dual input gear and a dual output ratchet;

The duplex input gear is in transmission connection with the second driving wheel;

The transmission ratchet is fixedly connected to the main shaft;

The reversing mechanism includes a steering wheel rotatably linked to the second end of the main shaft and a pawl arranged on the steering wheel;

The number of the ratchets is two, which cooperate with the double output ratchet and the transmission ratchet respectively to form a ratchet mechanism;

The pawl includes a ratchet post that runs through the steering wheel, a reversing rod that is fixedly connected to the top of the ratchet post, a special-shaped block that is fixedly connected to the lower end of the ratchet post, and a ratchet that is sleeved on the ratchet post. Claw spring;

The reversing rod is arranged on the outer side of the reversing wheel;

The special-shaped block is arranged on the inner side of the steering wheel;

The pawl spring is arranged between the shaped block and the steering wheel.

Further, the reversing mechanism further includes a linkage rod movably connected with the two reversing rods and a spring damper movably connected with the linkage rod at one end;

The shaped block includes a sliding jump surface and a non-return surface;

The other end of the spring shock absorber is rotatably linked to the steering wheel.

The reversing rod is arranged on the extension line of the intersecting line of the ski jump surface and the non-return surface.

Further, the ski jump is a conical surface or two inclined surfaces;

The non-return surface is a cylinder or two planes.

Further, the control device of the roller shade also includes a direction adjustment mechanism;

The steering mechanism includes a steering ring sleeved on the outside of the steering wheel and a manual fork that controls the axial movement of the steering ring along the steering wheel;

The reversing ring is rotatably connected with the linkage rod;

The manual shift fork is slidably connected to the left vertical plate.

Further, the reversing mechanism also includes an output wheel fixedly connected to the transmission shaft;

The output wheel is in driving connection with the steering wheel.

Further, the control device of the roller shade also includes an automatic turning mechanism;

The automatic turning mechanism includes a mounting seat arranged on the lower cover, a sliding block, a swing bar, a spring rod, a spring sleeve, a compression spring, a lever, a limit post, and a sliding block rotatably connected to the input shaft and the transmission shaft ;

The limit post includes a first limit post and a second limit post;

The first limit post and the second limit post are arranged at intervals, and the partial distance between the first limit post and the second limit post is greater than the sliding stroke of the sliding block;

The first end of the sliding block is connected to the transmission shaft by screw transmission, the second end of the sliding block is slidingly connected to the drive shaft, and the sliding block is provided with a first driving rod and a second driving rod;

The mounting seat is provided with a bar-shaped guide hole, and the sliding block is slidably connected with the mounting seat through the guide hole,

The sliding 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 the 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 rotatably connected to the middle of the swing rod, and the second end of the spring rod is slidably connected to 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 to the first end of the lever;

A first limit post and a second limit post are arranged on the mounting base;

The middle part of the lever is rotatably connected to the mounting 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 driving lever and the second stop post. between the levers.

Further, the reversing mechanism also includes a friction plate fixedly connected to 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 to the second end of the transmission shaft, and at the same time, the first end of the friction output shaft is frictionally connected to one side of the friction plate.

Further, the reversing mechanism also includes a plane thrust bearing sleeved on the friction output shaft and a thrust adjustment rod;

The plane thrust bearing is rotatably connected to the friction output shaft;

One end of the thrust adjustment rod presses the plane thrust bearing onto the friction output shaft.

A shading blind, comprising any one of the above-mentioned roller shading control devices, a shading curtain, and a roller bin for retracting the shading blind;

One end of the tube roll chamber is provided with a roll input shaft;

The winding roller input shaft is in transmission link with the steering wheel, transmission shaft or friction output shaft.

Compared with prior art, the beneficial effect that the present invention obtains is as follows:

The invention transmits the power of the input shaft to the transmission ratchet through the first driving wheel, the intermediate wheel, the transmission wheel and the main shaft, and at the same time transmits the power of the main shaft to the double output ratchet through the second driving wheel and the double input wheel, thereby realizing double The rotation direction of the output ratchet is opposite to the rotation direction of the transmission ratchet, and the rotation angular velocity is equal to ensure that the output torque of the control device of the rolling roller shade is the same; when the input shaft rotates in the forward direction, the transmission ratchet rotates in the forward direction. The output ratchet rotates in the reverse direction; when the input shaft rotates in the reverse direction, the transmission ratchet rotates in the reverse direction, and the double output ratchet rotates in the forward direction; When rotating in the forward direction, the forward rotating one of the double output ratchet and the transmission ratchet will drive the steering wheel to rotate forward through the pawl and transmit power, and the reverse rotating one of the double output ratchet and the transmission ratchet will interact with the pawl Sliding and not transmitting power; similarly, when the two pawls on the steering wheel are reversed, the reverse rotation of the double output ratchet and the transmission ratchet will drive the steering wheel to rotate reversely through the pawl and transmit Power, one of the forward rotation of the double output ratchet and the transmission ratchet will slide with the ratchet and not transmit power; therefore, as long as the direction of the ratchet is determined, no matter whether the input power is forward or reverse, the control device of the roller shade will output The direction of the power is unique; if the direction of the pawl changes, the direction of the power output by the control device of the roller shade will also change.

A reversing rod is arranged in the ratchet. By rotating the reversing rod, the special-shaped block is driven to rotate, thereby switching the forward or reverse direction of the ratchet, and then realizing the control of the power direction output by the control device of the rolling roller shade.

Through the linkage lever of the reversing mechanism, the synchronization of the adjustment direction of the two pawls is guaranteed; the switching speed of the linkage lever can be guaranteed by setting the spring shock absorber, and the damage of the special-shaped block can be prevented.

The reversing ring is connected with the linkage rod, and the sliding direction of the reversing ring can be controlled by sliding the manual fork, and then the direction of the two pawls can be changed at the same time, which makes the power direction control of the roller shade control device more convenient.

Through the output wheel fixedly connected to the transmission shaft, the power of the steering wheel is output through the transmission shaft. At the same time, 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 transmission shaft and the flow can be realized. The screw drive at the first end of the sliding block; the second end of the sliding block is slidingly linked 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 lever and a second The second driving lever can move the second end of the lever, and then drive the spring sleeve and the spring rod to slide, and the compression spring is compressed; when the first driving lever or the second driving lever moves the lever parallel to the spring rod, the compression spring compresses To the shortest, continue to toggle the second end of the lever, the compression spring quickly separates the spring sleeve and the spring rod to both sides, the first end of the lever abuts on the first or second limit post, the second end of the lever The two ends are separated from the first driving rod or the second driving rod and move between the first driving rod and the second driving rod; under the continuous action of the compression spring, the first end of the spring rod pushes the swing rod to rotate, and the swing rod moves to the second One end drives the sliding block to slide along the guide hole, and the first shifting block and the second shifting block on the sliding block move the reversing ring from one limit position to another limit position, thereby changing the direction of the steering wheel, and then Realize the function of automatic rotation of the control device to prevent the control device from being damaged after the shading curtain reaches the limit position and continues to run.

When the symmetrical planes of the first driving rod and the second driving rod coincide with the symmetrical planes of the first limiting post and the second limiting post, the first end of the lever can freely move between the first limiting post and the second limiting post. The second end of the lever swings between the first lever and the second lever, so that when the sliding block is in the middle position, the manual fork can slide, ensuring that the output can be changed at any position direction of torque.

The friction connection between the friction plate and the friction output shaft can adjust the positive pressure between the two through the thrust adjustment rod and the plane thrust bearing, which can adjust the upper limit of the output torque and solve the problem of preventing damage to the control device and the shading curtain.

Description of drawings

Accompanying drawing 1 is the structural representation of embodiment 4 of shading curtain of the present invention;

Accompanying drawing 2 is the structural representation of embodiment 5 of the present invention;

Accompanying drawing 3 is the sectional view of the control device of roller shade of the present invention;

Accompanying drawing 4 is the A-A direction sectional view of accompanying drawing 3 of the present invention;

Accompanying drawing 5 is the partial sectional view of the mechanism of automatic revolving mechanism of the present invention;

Accompanying drawing 6 is the sectional view of steering wheel half of the present invention;

Accompanying drawing 7 is the right view of accompanying drawing 6 of the present invention;

Accompanying drawing 8 is the perspective view of ratchet of the present invention;

Accompanying drawing 9 is the bottom view of ratchet of the present invention.

Accompanying drawing 10 is the structural representation of the mechanism state I of automatic revolving mechanism of the present invention;

Accompanying drawing 11 is the structure schematic diagram of the mechanism switching process I of automatic revolving mechanism of the present invention;

Accompanying drawing 12 is the schematic structural diagram of the mechanism switching process II of the automatic revolving mechanism of the present invention;

Accompanying drawing 13 is the schematic diagram of the mechanism state II structure of the automatic turning mechanism of the present invention;

In the accompanying drawings: 11 rear vertical board, 12 front vertical board, 13 left vertical board, 14 right vertical board, 15 upper cover, 16 lower cover, 21 main shaft, 22 transmission shaft, 23 input shaft, 31 transmission wheel, 32 middle Wheel, 33 first driving wheel, 34 second driving wheel, 351 double input gear, 352 double output ratchet, 36 transmission ratchet, 37 steering wheel, 38 output wheel, 381 friction plate, 39 friction output shaft, 391 plane Thrust bearing, 392 thrust adjustment lever, 41 reversing ring, 42 manual fork, 43 sliding block, 431 first lever, 432 second lever, 5 automatic turning mechanism, 51 mounting seat, 511 guide hole, 52 slide Shift block, 521 first shift block, 522 second shift block, 53 swing rod, 531 swing rod chute, 541 spring rod, 542 spring sleeve, 543 compression spring, 55 lever, 56 limit column, 561 first limit Position column, 562 second limit column, 6 pawls, 61 pawl springs, 62 pawl springs, 63 special-shaped blocks, 631 sliding surfaces, 632 non-return surfaces, 64 reversing rods, 65 linkage rods, 66 spring shock absorbers device, 71 roller bins, 711 roller input shafts, 72 blackout curtains.

Implementation

The present invention will be further described in detail below in conjunction with the accompanying drawings. In this application, the fixed connection mode of the gear and the shaft can be a conventional fixed mode such as a key connection, a circlip with a screw connection, etc., and a stepped shaft and a keyway are arranged on the shaft according to actual needs. and other methods are used for positioning, and technical means well known to those skilled in the art, such as connection methods, positioning methods, and dimensional design, are not described in detail in this embodiment.

Embodiment 1: As shown in Figure 3-5, a control device for roller shade 72 includes a housing, a transmission mechanism and a reversing mechanism; the housing includes a rear upper cover 15, a lower cover 16, a rear stand Plate 11, the front vertical board 12 that is arranged in parallel with described rear vertical board 11, the left vertical board 13 that connects described rear vertical board 11 and described front vertical board 12 and connects described rear vertical board 11 and described front vertical board The right vertical plate 14 of the plate 12; the transmission mechanism includes a main shaft 21, a transmission shaft 22 and an input shaft 23 arranged between the rear vertical plate 11 and the front vertical plate 12, and the fixing of the first end of the main shaft 21 The connected transmission wheel 31, the dual gear arranged on one side of the transmission wheel 31, the transmission ratchet 36 arranged on one side of the dual gear, the intermediate wheel 32 rotatably connected to the first end of the transmission shaft 22, And the first drive wheel 33 and the second drive wheel 34 that are fixedly connected to the first end of the input shaft 23 in turn; the input shaft 23 is a power input end, and the power input includes manual and power mechanical drive; the transmission shaft 22 is located on the main shaft 21 and the perpendicular bisector of the line connecting the axes 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 duplex gear is in rotation connection with the main shaft 21; The duplex gear includes 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 36 is fixedly connected with the main shaft 21; The reversing mechanism includes a steering wheel 37 rotationally linked to the second end of the main shaft 21 and a ratchet 6 arranged on the steering wheel 37; the number of the ratchets 6 is two, which are connected with the double output ratchet 352 and the ratchet wheel 352 respectively. The transmission ratchet 36 cooperates to form a ratchet mechanism; the double output ratchet 352 and the transmission ratchet 36 are arranged in the cavity of the steering wheel 37, and the second end of the steering wheel 37 runs 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.

Working process: through the input shaft 23 positive input power, the input shaft 23 drives the first driving wheel 33 and the second driving wheel 34 to rotate forward, the first driving wheel 33 drives the driving wheel 31 through the intermediate wheel 32 For forward rotation, the transmission wheel 31 drives the main shaft 21 to rotate forward and drives the transmission ratchet 36 to rotate forward. between the transmission ratchets 36, so the dual input gear 351 drives the dual output ratchets 352 to reversely rotate; since the transmission ratio of the dual output ratchets 352 and the transmission ratchets 36 is 1:1, the dual output ratchets 352 and the The rotating speed of transmission ratchet 36 is identical; The speed ratio of power input end and power output end is constant; Because two ratchets 6 on the steering wheel 37 are all positive, ratchet 6 can only be driven to forward rotation, so double The joint output ratchet 352 slides with the pawl 6, and power cannot be transmitted. The transmission ratchet 36 is engaged with the pawl 6 and transmits torque, which drives the steering wheel 37 to rotate in the forward direction; The joint output ratchet 352 rotates in the forward direction, and the transmission ratchet 36 rotates in the reverse direction. The two pawls 6 on the steering wheel 37 are both positive. The wheel 37 rotates in the forward direction, and the transmission ratchet 36 and the pawl 6 slide, so that power cannot be transmitted, and the forward rotation of the steering wheel 37 will not be hindered; in summary, when the two pawls 6 are both in the forward direction, no matter the input When the shaft 23 rotates in the forward direction or in the reverse direction, the output power of the reversing mechanism is in the forward direction. Similarly, when the two ratchets 6 are reversed, no matter whether the input shaft 23 rotates forward or reverse, the output power of the reversing mechanism is reversed.

Embodiment 2: As shown in Figure 3-8, a control device for roller shade 72 includes a housing, a transmission mechanism, a reversing mechanism and a direction adjustment mechanism; the housing includes a rear upper cover 15, a lower cover 16, vertical board, the front vertical board 12 that is arranged in parallel with described rear vertical board 11, the left vertical board 13 that connects described rear vertical board 11 and described front vertical board 12 and connects described rear vertical board 11 and described The right vertical plate 14 of the front vertical plate 12; the transmission mechanism includes a main shaft 21, a transmission shaft 22 and an input shaft 23 arranged between the rear vertical plate 11 and the front vertical plate 12, and the first end of the main shaft 21 The transmission wheel 31 that is fixedly connected, the dual gear that is arranged on one side of the transmission wheel 31, the transmission ratchet 36 that is arranged on one side of the dual gear, and the intermediate wheel that is rotatably connected to the first end of the transmission shaft 22 32, and the first driving wheel 33 and the second driving wheel 34 fixedly connected to the first end of the input shaft 23 in sequence; the input shaft 23 is a power input end, and the power input includes manual and power mechanical drive; the transmission shaft 22 shown Located on the perpendicular bisector of the line connecting 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 dual gear rotates with the main shaft 21 connection; the dual gears include a dual input gear 351 and a dual output ratchet 352; the dual 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 includes a steering wheel 37 that is rotationally linked to the second end of the main shaft 21, two ratchets 6 arranged on the steering wheel 37, a linkage rod 65 that is movably connected with the two ratchets 6, and fixedly connected to the transmission. The output wheel 38 on the shaft 22 and the spring shock absorber 66 that is movably connected with the linkage rod 65 at one end; the other end of the spring shock absorber 66 is rotationally linked to the steering wheel 37; Respectively cooperate with the double output ratchet 352 and the transmission ratchet 36 to form a ratchet mechanism; the ratchet 6 includes the ratchet column 61 that passes through the steering wheel 37, and the ratchet column 61 that is fixedly connected to the top of the ratchet column 61. The reversing rod 64, the special-shaped block 63 fixedly connected to the lower end of the ratchet column 61 and the pawl spring 62 sleeved on the ratchet post 61; the reversing rod 64 is arranged on the outside of the steering wheel 37 The two ends of the linkage rod 65 are respectively connected to the two reversing rods 64 in rotation; the special-shaped block 63 is arranged on the inner side of the steering wheel 37; the pawl spring 62 is arranged on the special-shaped block 63 and Between the steering wheel 37; the special-shaped block 63 includes a conical sliding surface 631 and a cylindrical non-return surface 632; the other end of the spring shock absorber 66 is rotatably linked to the steering wheel 37; the steering mechanism includes a steering ring 41 sleeved on the outside of the steering wheel 37 and a manual shift fork 42 that controls the steering ring 41 to move axially along the steering wheel 37; the steering ring 41 and the steering wheel The linkage rod 65 is rotationally connected; the manual shift fork 42 is slidably connected to the left vertical plate 13; the double output ratchet 352 and the transmission ratchet 36 are arranged in the cavity of the steering wheel 37, so The output wheel 38 is in transmission connection with the steering wheel 37; one end of the transmission shaft 22 passes through the front vertical plate 12 or the rear vertical plate 11 to form the torque output end of the control device for the roller shade 72.

Working process: through the input shaft 23 positive input power, the input shaft 23 drives the first driving wheel 33 and the second driving wheel 34 to rotate forward, the first driving wheel 33 drives the driving wheel 31 through the intermediate wheel 32 For forward rotation, the transmission wheel 31 drives the main shaft 21 to rotate forward and drives the transmission ratchet 36 to rotate forward. between the transmission ratchets 36, so the dual input gear 351 drives the dual output ratchets 352 to reversely rotate; since the transmission ratio of the dual output ratchets 352 and the transmission ratchets 36 is 1:1, the dual output ratchets 352 and the The rotating speed of transmission ratchet 36 is identical; The speed ratio of power input end and power output end is constant; Because the direction of the taper surface on two special-shaped blocks 63 is identical, all towards positive direction, when described transmission ratchet 36 forward rotation, with transmission ratchet 36 The corresponding cone-shaped sliding surface 631 has no force, and the cylindrical non-return surface 632 is under force, which cannot push the special-shaped block 63 upwards, and the special-shaped block 63 can only be driven to rotate in the forward direction, while the double output ratchet 352 rotates in the opposite direction, the conical sliding surface 631 is forced to move upward, and the pawl spring 62 is compressed until the special-shaped block 63 breaks away from the double output ratchet 352, and the special-shaped block 63 slides relative to the steering wheel 37, and the double output ratchet 352 reverse rotation will not hinder the forward rotation of the steering wheel 37, so the transmission ratchet 36 is clamped with the special-shaped block 63 and transmits the torque, and the steering wheel 37 rotates forward; similarly, through the input shaft 23 reverse input power, The double output ratchet 352 rotates forward, the transmission ratchet 36 rotates reversely, the sliding surface 631 on the special-shaped block 63 is positive, the double output ratchet 352 is engaged with the pawl 6 and transmits torque, driving the steering wheel 37 forward Rotate, transmission ratchet 36 and special-shaped block 63 slip, can not transmit power, can not hinder the forward rotation of steering wheel 37; In summary, when the sliding surface 631 on the two special-shaped blocks 63 is positive, no matter Whether the input shaft 23 rotates in the forward direction or in the reverse direction, the output power of the reversing mechanism is in the forward direction. Similarly, when the two ratchets 6 are reversed, no matter whether the input shaft 23 rotates forward or reverse, the output power of the reversing mechanism is reversed. When it is necessary to change the direction of the output torque, it is only necessary to switch the direction of the manual shift fork 42. The manual shift fork 42 drives the reversing ring 41 to slide along the axial direction of the steering wheel 37, and the reversing ring 41 is driven by the linkage rod 65. Two reversing rods 64 rotate around the ratchet posts 61 linked separately, and 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 in the opposite direction; , the spring shock absorber 66 is first compressed and then rapidly dilated, driving the special-shaped block 63 to quickly switch the orientation of the sliding surface 631, and at the same time, the feeling of falling is obvious during the switching process.

Embodiment 3: as shown in Figure 3-13, similar to Embodiment 2, the difference is that the reversing mechanism also includes a friction plate 381 fixedly connected to the side of the output wheel 38, and a friction output set on the side of the friction plate 381 shaft 39, a plane thrust bearing 391 and a thrust adjustment rod 392 sleeved on the friction output shaft 39; One end is frictionally connected with one side of the friction plate 381; the plane thrust bearing 391 is rotationally connected with the friction output shaft 39; one end of the thrust adjustment rod 392 presses the plane thrust bearing 391 on the On the above-mentioned friction output shaft 39; the control device of the roller shade 72 also includes an automatic turning mechanism 5; Spring bar 541, spring sleeve 542, compression spring 543, lever 55, limit post 56 and the sliding piece 43 that is rotatably connected on input shaft 23 and transmission shaft 22; Described limit post 56 comprises the first limit post 561 and the second limit post 562; the first end of the sliding block 43 is connected with the transmission shaft 22 by screw transmission, the second end of the sliding block 43 is slidingly connected with the drive shaft, and the sliding block 43 is A first shifting rod 431 and a second shifting rod 432 are provided; when the symmetrical planes of the first shifting rod 431 and the second shifting rod 432 coincide with the symmetrical planes of the first limiting post 561 and the second limiting post 562, the 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 driving rod 431 and the second driving rod 432; 51 is provided with a bar-shaped guide hole 511, and 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, The reversing ring 41 is arranged between the first shifting block 521 and the second shifting block 522; the first end of the swing rod 53 is provided with a swing rod chute 531; the swing rod 53 is connected with the swing rod chute 531 The sliding block 52 is movably connected, the second end of the swing rod 53 is rotatably connected to the mounting base 51; the first end of the spring rod 541 is rotatably connected to the middle part of the swing rod 53, and the second end of the spring rod 541 Slidingly 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 rotationally connected with the first end of the lever 55; The mounting base 51 is provided with a first limiting column 561 and a second limiting column 562; the middle part of the lever 55 is rotatably connected with the mounting base 51, and the first end of the lever 55 is arranged on the first limiting column 561 Between the second limiting post 562 , the second end of the lever 55 is disposed between the first driving rod 431 and the second driving rod 432 .

Working process: as shown in Figure 3-13, similar to Embodiment 2, the difference is that this embodiment can switch the power output direction at the extreme position, and can limit the maximum output torque of the control device of the rolling roller shade 72 at the same time .

Specifically, when the sliding jump surface 631 on the special-shaped block 63 is forward, the reversing ring 41 is located in the reverse output position, the steering wheel 37 rotates forward, the steering wheel 37 drives the output wheel 38 to rotate reversely, and the output wheel 38 Drive the transmission shaft 22 to rotate in reverse, and the transmission shaft 22 drives the sliding block 43 to move in the direction of α in the form of screw transmission; when the first driving rod 431 touches the second end of the lever 55, the first end of the lever 55 and the second limit The position post 562 abuts; the symmetry plane of the first shifting rod 431 and the second shifting rod 432 has coincided with the symmetry plane of the first stop post 561 and the second stop post 562 and is separated again; the sliding block 43 continues to α direction movement, the first lever 431 moves the lever 55 to separate from the second limit post 562, and then drives the spring sleeve 542 and the spring rod 541 to slide, and the compression spring 543 is compressed; when the lever 55 is parallel to the spring rod 541, the compression The spring 543 is compressed to the shortest, and the second end of the lever 55 is continued to be moved, the compression spring 543 quickly separates the spring sleeve 542 and the spring rod 541 to both sides, and 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 driving lever 431, and then the spring sleeve 542 and the spring rod 541 continue to separate to both sides. The block 521 moves the reversing ring 41 to slide axially along the reversing wheel 37, the manual fork 42 moves with the reversing ring 41, the reversing rod 64 drives the special-shaped block 63 to reversing, and the sliding surface 631 changes from positive to reverse. direction, the steering wheel 37 changes from forward rotation to reverse rotation, the output wheel 38 becomes forward rotation, and the sliding block 43 moves in the reverse direction to α. When the second driving lever 432 touches the second end of the lever 55 , the first end of the lever 55 abuts against the first limit post 561, and the symmetrical planes of the first shift rod 431 and the second shift rod 432 have coincided with the symmetrical planes of the first stop post 561 and the second stop post 562 Separate again; the slide block 43 continues to move in the opposite direction to the α direction, and the second driving lever 432 moves the lever 55 to separate from the first limit post 561, and then drives the spring sleeve 542 and the spring rod 541 to slide, and the compression spring 543 compresses Compression; when the lever 55 was parallel to the spring bar 541, the compression spring 543 was compressed to the shortest, and the second end of the lever 55 was continued to be moved, and the compression spring 543 quickly separated the spring sleeve 542 and the spring bar 541 to both sides, and the lever 55 first One end is abutted on the second limit post 562, the second end of the lever 55 is separated from the second driving lever 432, and then the spring sleeve 542 and the spring rod 541 continue to separate to both sides, and the dial is moved along the guide from the reverse output position. The hole 511 slides to the forward output position, and at the same time, the second dial 522 moves the reversing ring 41 to slide axially along the reversing wheel 37, the manual fork 42 moves with the reversing ring 41, and the reversing rod 64 drives the special-shaped block 63 Reversing, the ski jump surface 631 changes from reverse to forward, the steering wheel 37 changes from reverse rotation to forward rotation, and the output wheel 38 becomes reverse rotation, and the forward and reverse switching of the output wheel 38 completes a cycle. The output wheel 38 drives the friction output shaft 39 to rotate through the friction plate 381, adjusts the positive pressure between the friction plate 381 and the friction output shaft 39 through the adjustment rod, thereby adjusting the maximum output torque of the friction output shaft 39, when the friction output shaft 39 needs When the torque 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 will rotate relative to each other, and the friction output shaft 39 will stop rotating due to the sliding friction between the two, thus ensuring the winding The controls of the roller blind 72 are not damaged.

Embodiment 4: As shown in Fig. 1 and Fig. 3-5, a kind of shading curtain 72 includes a roller bin 71, a shading curtain 72 and two sets of control devices for the roller shading curtain 72 in Embodiment 1; The output shaft output torque of the control device of the roller shading curtain 72 is equal in size and opposite in direction. The second end of the output wheel 38 of the device is in drive connection.

Working process: when the shading curtain 72 needs to be retracted, start one of the roller shading curtain 72 control devices whose output torque is forward rotation; when the shading curtain 72 needs to be opened, start the other set of output torque to reverse Roller roller blinds 72 can be used.

Embodiment 5: As shown in Fig. 2-13, a kind of shading curtain 72, comprises the roller bin 71, the shading curtain 72 and the control device of the roller shading curtain 72 in embodiment 3, the roller input shaft 711 and The friction output shaft 39 of the control device of the rolling roller shade 72 is connected in transmission.

Working process: when it is necessary to raise the shading curtain 72, only need to slide the manual fork 42 to the raised position, pull the traction rope, forward and reverse can be used; when it is necessary to lower the shading curtain 72, only need to slide the manual fork 42 To the lowered position, pull the traction rope, both forward and reverse. It is also possible to pull the traction rope all the time, and the shade 72 will reciprocate between the upper and lower limit positions.

The implementation manners described above are only preferred embodiments of the present invention, rather than an exhaustive list of feasible implementations of the present invention. For those skilled in the art, any obvious changes made without departing from the principle and spirit of the present invention shall be deemed to be included in the protection scope of the claims of the present invention.

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).

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