CN210003180U

CN210003180U - vertical curtains

Info

Publication number: CN210003180U
Application number: CN201920403237.2U
Authority: CN
Inventors: 孙勇; 周亚飞; 鲍永林; 姜春
Original assignee: Ningbo Dooya Mechanic and Electronic Technology Co Ltd
Current assignee: Ningbo Dooya Mechanic and Electronic Technology Co Ltd
Priority date: 2019-03-27
Filing date: 2019-03-27
Publication date: 2020-01-31
Anticipated expiration: 2029-03-27

Abstract

The utility model discloses an perpendicular curtains, including track subassembly, drive arrangement, dimming axle and drive shaft, the track subassembly includes the track, dimming axle and drive shaft extend along orbital length direction respectively, drive arrangement includes the drive case and sets up the transmission case in track end, the drive case includes actuating mechanism, the transmission case includes drive mechanism, its characterized in that, the transmission case is still including being used for and being used for controlling actuating mechanism's control scheme board with the remote control ware communication to and be used for detecting the stroke detection mechanism of dimming axle and drive shaft stroke, stroke detection mechanism is including setting up the hall element on the control scheme board, and respectively with dimming axle and drive shaft synchronous operation, can by two magnets of hall element response.

Description

vertical curtains

Technical Field

The utility model relates to a curtain, in particular to an vertical curtain.

Background

The electric vertical curtain adopts a swinging-page type structure, so that the curtain sheet can move left and right to realize the folding and unfolding of the vertical curtain, and the curtain sheet can also turn to change the light transmission direction, and the vertical curtain has an increasing application range of because the vertical curtain can adjust indoor light, ventilate and can also shield sunlight.

The existing vertical curtain realizes the dimming and the folding and unfolding of the curtain through a motor mechanical transmission mode, a rotary transmission rod and a translational transmission rod are arranged in a sliding block in a penetrating mode, the sliding block can slide in a track under the driving of a transmission mechanism, a hook is arranged at the lower part of the sliding block, a curtain sheet is fixed on the hook, a motor driving mechanism is arranged at the end of the track, when the motor is powered on to operate, the operation of the motor is controlled through the transmission of planetary speed reduction and a planetary speed change system, the translational transmission rod controls the opening and closing of the curtain sheet, and the rotary transmission rod controls the steering of the curtain sheet, so that the control of the stroke.

For example, in the present applicant's chinese patent application No. 201320285411.0, motorized vertical blinds are disclosed, which include a rail, and a driving mechanism disposed at the end of the rail , in which a dimming shaft and a driving shaft are disposed, and the driving mechanism includes a th motor and a second motor, which respectively drive the dimming shaft and the driving shaft through gear sets, and operate independently of each other, thereby achieving separation of dimming and upgrading of the blinds.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that to the problem that above-mentioned prior art exists, provide kinds of perpendicular curtains, can realize meeting and hinder automatic record position after stopping to the realization is to curtain stroke length's calibration.

The utility model provides a technical scheme that the aforesaid technical problem adopted is perpendicular curtains, including track subassembly, drive arrangement, dimming axle and drive shaft, the track subassembly includes the track, dimming axle and drive shaft extend along orbital length direction respectively, drive arrangement includes drive box and the transmission case of setting at track end, the drive box includes actuating mechanism, the transmission case includes drive mechanism, its characterized in that, the transmission case still including be used for with remote controller communication and be used for controlling actuating mechanism's control scheme board to and be used for detecting the stroke detection mechanism of dimming axle and drive shaft stroke, stroke detection mechanism is including setting up the hall element on the control scheme board to and respectively with dimming axle and drive shaft synchronous operation, can be by two magnets of hall element response.

Preferably, in order to facilitate the arrangement of the magnets, the two magnets are th magnet and a second magnet, respectively, the stroke sensing mechanism further comprises a th synchronizing shaft synchronized with the dimming shaft and a second synchronizing shaft synchronized with the driving shaft, the th magnet is disc-shaped and arranged on the th synchronizing shaft, the second magnet is disc-shaped and arranged on the second synchronizing shaft, and at least two opposite poles are formed on each magnet.

To facilitate the transmission mechanism to transmit the torque of the driving mechanism to the dimming shaft and the driving shaft, the transmission mechanism comprises a gear set drivingly connected to the output shaft of the driving mechanism, an th transmission member connected to the dimming shaft, and a second transmission member connected to the driving shaft, the gear set being selectively engageable with the th transmission member and the second transmission member.

Preferably, the th driving medium is a planetary gear, the planetary gear includes a transmission gear sleeve connected with the end of the dimming shaft, a planet wheel arranged in the transmission gear sleeve, a sun wheel arranged in the middle of the planet wheel, and a transmission shaft coaxially connected with the sun wheel and extending out of the transmission gear sleeve, and the th synchronizing shaft penetrates into and is connected with the sun wheel.

Preferably, the second transmission member is a bevel gear assembly, and the bevel gear assembly comprises a th bevel gear connected with the gear set and a second bevel gear connected with the driving shaft, and the second bevel gear is meshed with the th bevel gear.

To facilitate the arrangement of the driving shaft, the rail assembly further comprises th guide wheels and a second guide wheel arranged at two ends of the rail, wherein the th guide wheel is arranged coaxially with the second bevel gear, and the driving shaft is a closed ring-shaped pull ball and extends th distance downwards around the th guide wheel and the second guide wheel and penetrates out of the rail assembly at the second guide wheel.

Preferably, the output shaft of the driving mechanism extends into the transmission case, the gear set comprises a driving gear arranged on the part of the output shaft of the driving mechanism, which is positioned in the transmission case, a movable gear capable of being directly or indirectly connected with the driving gear, and a transmission gear which is arranged between the movable gear and the transmission member and capable of being directly or indirectly connected with or disconnected from the movable gear, the transmission gear is connected with the second transmission member, and the second synchronizing shaft penetrates into the transmission gear and is connected with the second transmission member.

Preferably, in order to enable smooth transmission of the output, a second transmission gear is provided between the movable gear and the drive gear, a third transmission gear is provided between the movable gear and the th transmission gear, the second transmission gear is kept meshed with the drive gear and the movable gear, the movable gear and the th transmission gear are provided on both sides of the third transmission gear, the third transmission gear can be meshed with or separated from the movable gear, and the axial direction of the rotating shaft of each gear is parallel to the axial direction of the output shaft of the drive mechanism.

Compared with the prior art, the utility model has the advantages of: through setting up the stroke and detecting the structure, be convenient for detect the stroke of dimming axle and drive shaft, realize meeting and hinder automatic recording position after stopping to can detect the concrete state of adjusting luminance, and the displacement of curtain piece, realize the calibration to curtain stroke length.

Drawings

FIG. 1 is a schematic view of a vertical curtain according to an embodiment of the present invention;

FIG. 2 is an exploded view of the vertical curtain according to the embodiment of the present invention;

FIG. 3 is a schematic view of a slider of a track assembly of a vertical curtain in accordance with an embodiment of the present invention;

FIG. 4 is an enlarged view of a portion I of FIG. 2;

FIG. 5 is an enlarged view of portion II of FIG. 2;

fig. 6 is a schematic view of a partially exploded structure of a vertical curtain according to an embodiment of the present invention;

FIG. 7 is a cross-sectional view of the th magnet of the vertical curtain and its synchronizing shaft of an embodiment of the present invention;

fig. 8 is a cross-sectional view of a second magnet of the vertical curtain and its synchronizing shaft according to an embodiment of the present invention.

Fig. 9 is a partial schematic view of the vertical curtain of the embodiment of the present invention at the gear 1;

fig. 10 is a partial schematic view of the vertical curtain in gear 2 according to the embodiment of the present invention.

Detailed Description

The present invention will be described in further detail in with reference to the following embodiments.

Referring to fig. 1 and 2, vertical curtains comprise a track assembly 1 and a driving device 2 arranged at the end of the track assembly 1 . the track assembly 1 is provided with a plurality of parallel sliding blocks 3, the sliding blocks 3 can slide in the track assembly 1. a driving rod for driving the curtain sheet, a dimming shaft 4 for driving the curtain sheet to rotate and a driving shaft 5 for driving the sliding blocks 3 to translate respectively pass through the sliding blocks 3.

Referring to fig. 3 to 10, the driving device 2 includes a driving case 21 and a transmission case 22, the driving case 21 includes a driving mechanism for driving the dimming axis 4 and the driving axis 5 to rotate, and the transmission case 22 includes a transmission mechanism for transmitting an output of the driving mechanism to the dimming axis 4 and the driving axis 5. the transmission case 22 of the driving device 2 is disposed at an end of the rail assembly 1, the driving case 21 is disposed in parallel with the end of the rail assembly 1, and the transmission case 22 is further disposed at an end of the driving case 21.

The track assembly 1 comprises a track 11, two slideways 12 are respectively formed on two sides in the track 11, each slideway 12 extends along the length direction of the track assembly 1, the transmission case 22 is arranged outside the end of the track 11, the end cover 13 is arranged outside the other end of the track 11, and preferably, the transmission case 22 is perpendicular to the track 11.

The slider 3 has a plurality of sliders arranged at intervals along the length direction of the rail 11. Each slider 3 includes a slider body 31, two opposite sides of the slider body 31 are respectively formed with a cylindrical pulley 32 protruding outward, the axial direction of the pulley 32 is transverse (preferably horizontal), and the pulleys 32 are respectively disposed in the corresponding slide ways 12, so that the slider 3 can slide in the rail 11 along the length direction of the rail 11. A hook 33 is provided below the slider body 31 to be fixed to a curtain sheet of a vertical curtain.

The slider body 31 includes a th portion 311 adjacent to pulleys 32 and a second portion 312 adjacent to another pulleys 32, as shown in fig. 3, a st portion 311 and the second portion 312 are disposed left and right, wherein a nd portion 311 is formed with a th through hole 313, a th through hole 313 penetrates through th portion 311 along the length direction of the track 11, the above-mentioned hook 33 is disposed below the th portion 311, the dimming shaft 4 penetrates through the th through hole 313 of each slider 3, an end of the dimming shaft 4 is connected to the transmission mechanism in the transmission case 22, and another end is rotatably connected to the end cap 13 at the end of the track assembly 1, the surface of the dimming shaft 4 has at least ribs 41, preferably, the outer surface of the dimming shaft 4 is uniformly provided with 3 ribs 41 along the circumferential direction, a th through hole 313 is provided with a worm transmission sleeve 314 capable of rotating relative to the th portion 311, and the same rotation axis, the transmission sleeve 314 passes through the transmission sleeve 85 along the length direction of the track 11, and the worm transmission sleeve 33 is rotated relative to the worm transmission sleeve 33, thereby the worm transmission sleeve is rotated to drive the worm transmission sleeve 314 to rotate the dimming shaft 33 to form a lower end of the worm wheel 33, thereby driving the worm wheel 311 and the worm wheel 33 to rotate the worm transmission sleeve to rotate the worm wheel 33 to rotate the worm transmission sleeve to drive the worm wheel 33 to rotate the worm transmission sleeve to rotate the worm wheel 33 to rotate the worm transmission sleeve to drive the worm transmission sleeve 33 to rotate the worm.

The second portion 312 is provided with a second through hole 316, the second through hole 316 penetrates the second portion 312 in the length direction of the track 11, the driving shaft 5 penetrates through the second through hole 316 of each sliding block 3 and is connected with the sliding block 3, in the embodiment, the driving shaft 5 adopts a ball-pulling chain which is integrally in a closed ring shape, and when the driving shaft 5 circularly moves, the sliding block 3 can be driven to slide in the length direction of the track 11, a sliding groove 317 is arranged at the upper end of the second portion 312, the sliding groove 317 is formed by downwards recessing the top surface of the second portion 312, two sides in the sliding groove 317 are provided with positioning protrusions 318 (the two positioning protrusions 318 extend oppositely) which protrude inwards, the track assembly 1 further comprises a limit bar 14 which slidably penetrates through the sliding groove 317, two ends of the limit bar 14 are provided with a mechanism which can be respectively abutted and matched with the positioning protrusions 318 of adjacent sliding blocks 3, in the embodiment, the limit bar 14 is provided with protrusions (not shown) which are obliquely arranged upwards towards the end of the driving device 2 and are used for being abutted with the side of the positioning protrusions of the driving device 2, the limit bar 14, the sliding block 14 is provided with another protrusion which is used for being abutted with a larger width, when the front side of the front limit bar 14 and the front end of the front limit bar 14 is used for limiting slide block which is used as a limit curtain, and a limit curtain, the front limit curtain which is used for limiting curtain 3, and a limit curtain which is used for limiting the front side which is used for limiting curtain 3, and a.

Thereby, the dimming shaft 4 and the driving shaft 5 respectively extend along the length direction of the track 11, and the track assembly 1, the dimming shaft 4 and the driving shaft 5 may be of the prior art and will not be described in detail herein.

The structure of the driving device 2 is described below, the driving box 21 includes a th box 211, a driving mechanism 212 disposed in the th box 211, in this embodiment, the driving mechanism 212 is a motor, the extending direction of an output shaft 2121 of the driving mechanism 212 is parallel to the longitudinal direction of the rail 11, the transmission box 22 includes a second box 221, a transmission mechanism disposed in the second box 221, an electromagnetic clutch switch 213 is disposed between the driving mechanism 212 and the transmission mechanism, the output shaft 2121 of the driving mechanism 212 passes through the electromagnetic clutch switch 213, the electromagnetic clutch switch 213 includes a switch main body 2131 and a clutch moving portion 2132, the clutch moving portion 2132 is disposed on the switch main body 2131 facing the side of the transmission box 22 and is capable of moving linearly in the axial direction of the output shaft 2121 of the driving mechanism 212, the clutch moving portion 2132 is closer to the transmission box 22 than to the switch main body 2131, and the output shaft 2121 of the driving mechanism 212 passes through the clutch moving portion 2132 and penetrates into the second box 221 of the transmission box 22.

The transmission mechanism of the transmission case 22 includes a gear train including a driving gear 2225 provided on a portion of the output shaft 2121 of the driving mechanism 212 located in the second case 221, a movable gear 2221 rotated by the driving gear 2225, and a th transmission gear 2222 rotated by the movable gear 2221, a second transmission gear 2223 may be provided between the movable gear 2221 and the driving gear 2225, a third transmission gear 2224 may be provided between the movable gear 2221 and the th transmission gear 2222, the second transmission gear 2223 is kept engaged with the driving gear 2225 and the movable gear 2221, the movable gear 2221 and the th transmission gear 2222 are provided on both sides of the third transmission gear 2224, and the third transmission gear 2224 can be engaged with or disengaged from the movable gear 2221.

The electromagnetic clutch switch 213 further includes a linking block 2133 respectively connected to the clutch moving part 2132 and the movable gear 2221, wherein an end of the linking block 2133 is connected to the clutch moving part 2132 and can be driven by the clutch moving part 2132 to move, a neck portion 22211 which is recessed radially inwards is disposed on the outer periphery of the movable gear 2221, and another end of the linking block 2133 is clamped on the outer periphery of the neck portion 22211, so that the movable gear 2221 can be driven to move linearly in the longitudinal direction of the track 11, close to the track 11, or away from the track 11.

The transmission mechanism in the transmission case 22 further includes a planetary gear 2226 (as the -th transmission member for connecting the gear set and the dimming shaft 4) for connecting with the dimming shaft 4, including a transmission sleeve 22261 connected with the end of the dimming shaft 4, a planetary gear 22262 arranged in the transmission sleeve 22261, a sun gear 22263 arranged in the middle of the planetary gear 22262, and a transmission shaft 22264 coaxially connected with the sun gear 22263 and extending out of the transmission sleeve 22261, the transmission shaft 22264 can be inserted into the movable gear 2221 so as to be rotated by the movable gear 2221, when the movable gear 2221 moves to the position closest to the track 22211, the movable gear 2221 is engaged with the transmission shaft 22264, and at this time, the movable gear 2221 can rotate the transmission shaft 22264, thereby rotating the sun gear 22263, so that the planetary gear 22262, and thus the transmission sleeve 22261, and finally the dimming shaft 4.

In order to enable the second transmission gear 2223 to always mesh with the movable gear 2221, the length in the axial direction thereof is not less than the moving distance of the movable gear 2221. In order to allow the movable gear 2221 to move in a direction away from the orbit 11 and then to mesh with the third transmission gear 2224, the third transmission gear 2224 and the planetary gears 2226 have a spacing in the extending direction of the orbit 11, and the third transmission gear 2224 is located farther away from the orbit 11 than the planetary gears 2226.

The transmission in the transmission case 22 further comprises a bevel gear assembly (as a second transmission connecting the gear set and the drive shaft 5) comprising a bevel gear 22271 and a second bevel gear 22272, the a bevel gear 22271 being coaxially connected with the a transmission gear 2222 and located on the side of the a transmission gear 2222 facing into the track 11, the second bevel gear 22272 being in mesh with the a bevel gear 22271 the transmission and the second transmission being interchangeable.

The track assembly 1 further comprises

guide wheels

151 and 152 disposed at two ends of the track 11, wherein the guide wheel 151 and the second bevel gear 22272 are coaxially disposed, in this embodiment, the second bevel gear 22272 is in the shape of an umbrella gradually enlarged from top to bottom, the guide wheel 151 is disposed below the second bevel gear 22272, the second guide wheel 152 is rotatably disposed in the end cap 13, the axial direction (vertical direction) of the rotating shaft of the guide wheel 151 and the second guide wheel 152 is perpendicular to the axial direction (horizontal direction) of the output shaft 2121 of the driving mechanism 212, the driving shaft 5 is wound on the guide wheel 151 and the second guide wheel 152, and penetrates the end cap 13 at the second guide wheel 152 to extend distance downward for manual operation.

The second casing 221 of the transmission case 22 is also provided with a control circuit board 223 for receiving a control signal from a remote controller, in the present embodiment, the transmission mechanism is provided on the side of the control circuit board 223 facing the track 11.

In order to detect the operation stroke of the dimming axis 4 and the driving shaft 5, a stroke detecting mechanism is further disposed in the transmission case 22, and includes a hall element 2241 disposed on the control circuit board 223, and a th magnet 2242 and a second magnet 2243 respectively cooperating with the hall element 2241, which are synchronously operated with the dimming axis 4 and the driving shaft 5, respectively, in the present embodiment, a th synchronizing shaft 2244 is connected to the sun gear 22263 of the planetary gear 2226, the th synchronizing shaft 2244 passes through the movable gear 2221 and the control circuit board 223, the th magnet 2242 is disk-shaped, is disposed on the th synchronizing shaft 2244 on the side of the control circuit board 223 far from the track 11, a second synchronizing shaft 2245 is inserted and connected to the transmission gear 2222, the second synchronizing shaft 2245 passes through the control circuit board 223, and the second magnet 2243 is disk-shaped, is disposed on the second synchronizing shaft 2245 on the side of the control circuit board 223 far from the track 11.

The th magnet 2242 is provided with two opposite poles, namely a N pole 22421 and a S pole 22422 of , a 1N pole 22421 and a S pole 22422 of semi-ring shapes, so that the disk-shaped th magnet 2242 is spliced, thereby a magnetic field with periodic variation can be formed in the circumferential direction of the corresponding synchronous shaft, the th magnet 2242 can be pairs of poles (namely only N pole and S pole), or a plurality of pairs of stages (namely, a plurality of N poles and S poles are arranged at intervals in the circumferential direction of the magnet, the number of the N poles and the S poles are the same and are arranged symmetrically along the axial direction), the th synchronous shaft 2244 drives the th magnet 8652 to rotate for every circles, the hall element 2241 on the control circuit board 223 generates signal waveforms according to the variation of the magnetic field, and transmits the generated signals to a processor on the control circuit board 223, the processor can obtain the stroke of the operation of the second magnet 2243 according to the optical axis waveforms, and the second magnet 22424 has the same N pole 22432 and the second magnet 2243.

The vertical curtain has two steps when in use:

1) the hand-pulling or light-adjusting gear is controlled to be switched to the gear by transmitting a signal to the control circuit board 223 through the remote controller, and the gear is automatically switched to the gear when the power is off, at this time, the electromagnetic clutch switch 213 works to generate a magnetic field to suck the clutch moving part 2132, at this time, the movable gear 2221 is located at the th position close to the track 11, so that the movable gear 2221 can be engaged with the planetary gear 2226, referring to fig. 9, the output shaft 2121 of the driving mechanism 212 and the light-adjusting shaft 4 are in transmission connection through the driving gear 2225, the second transmission gear 2223, the movable gear 2221 and the planetary gear 2226, and at this time, the driving shaft 5 is separated from the driving mechanism 212.

2) And opening and closing gears, namely, a signal is transmitted to the control circuit board 223 through a remote controller to control switching to enter the gears, at the moment, the electromagnetic clutch switch 213 does not work, a spring in the electromagnetic clutch switch is restored to a natural state, the clutch moving part 2132 moves towards a direction far away from the switch main body 2131, so that the linkage block 2133 is driven to synchronously act, the movable gear 2221 is driven to synchronously act, at the moment, the movable gear 2221 is located at a second position far away from the track 11, the movable gear 2221 is separated from the planetary gear 2226 to be meshed with the third transmission gear 2224, referring to fig. 10, the output shaft 2121 of the driving mechanism 212 is in transmission connection with the driving shaft 5 through the driving gear 2225, the second transmission gear 2223, the movable gear 2221, the third transmission gear 2224, the third transmission gear 222 , the transmission gear 2222, two bevel gears and the guide.

The utility model discloses a set up electromagnetic clutch switch between actuating mechanism and drive mechanism for drive mechanism is alternative with adjust luminance axle or drive shaft joint, thereby conveniently switches the gear, and need not to use two sets of actuating mechanism and drive mechanism, just can adjust luminance and open and shut the switching between, and can the electronic perpendicular curtain of hand power when the outage or under the mode of adjusting luminance.

Claims

The utility model provides an vertical curtain, including track subassembly (1), drive arrangement (2), dimming axis (4) and drive shaft (5), track subassembly (1) includes track (11), dimming axis (4) and drive shaft (5) extend along the length direction of track (11) respectively, drive arrangement (2) include drive case (21) and set up transmission case (22) at track (11) end, drive case (21) include actuating mechanism (212), transmission case (22) include drive mechanism, characterized in that, transmission case (22) still include be used for with remote controller communication and be used for controlling control circuit board (223) of actuating mechanism (212) to and be used for detecting the stroke detection mechanism of dimming axis (4) and drive shaft (5) stroke, stroke detection mechanism is including setting up hall element (2241) on control circuit board (223), and respectively with dimming axis (4) and drive shaft (5) synchronous operation, can be by two magnets of hall element 2241) response.
2. The vertical curtain as claimed in claim 1, wherein the two magnets are th magnet (2242) and a second magnet (2243), respectively, the stroke sensing mechanism further comprises a th synchronizing shaft (2244) synchronized with the dimming axis (4), and a second synchronizing shaft (2245) synchronized with the driving axis (5), the th magnet (2242) has a disk shape and is disposed on the th synchronizing shaft (2244), and the second magnet (2243) has a disk shape and is disposed on the second synchronizing shaft (2245), and at least two poles facing each other are formed on each magnet.
3. The vertical blind according to claim 2, characterized in that said transmission comprises a gear train drivingly connected to the output shaft (2121) of the drive mechanism (212), a th transmission element connected to said dimming axis (4), and a second transmission element connected to said drive shaft (5), said gear train being selectively engageable with said and second transmission elements.
4. The vertical curtain as claimed in claim 3, wherein the th driving element is a planetary gear (2226), the planetary gear (2226) comprises a driving gear sleeve (22261) connected with the end of the dimming shaft (4), a planetary gear (22262) arranged in the driving gear sleeve (22261), a sun gear (22263) arranged in the middle of the planetary gear (22262), and a driving shaft (22264) coaxially connected with the sun gear (22263) and extending out of the driving gear sleeve (22261), and the th synchronizing shaft (2244) penetrates into the sun gear (22263) and is connected with the sun gear.
5. The vertical blind of claim 3, wherein the second transmission member is a bevel gear assembly comprising a bevel gear (22271) connected to the gear train, a second bevel gear (22272) connected to the drive shaft (5), the second bevel gear (22272) meshing with the a bevel gear (22271).
6. The vertical blind of claim 5, wherein the track assembly (1) further comprises th guide wheels (151) and 152 disposed at both ends of the track (11), the th guide wheel (151) is disposed coaxially with the second bevel gear (22272), and the driving shaft (5) is a closed ring-shaped pull ball and extends around the th guide wheel (151) and the second guide wheel (152) and penetrates the track assembly (1) at the second guide wheel (152) to extend downward for a distance of .
7. The vertical curtain as claimed in wherein the output shaft (2121) of the driving mechanism (212) extends into the transmission case (22), the gear set comprises a driving gear (2225) disposed on a portion of the output shaft (2121) of the driving mechanism (212) within the transmission case (22), a movable gear (2221) capable of being directly or indirectly connected with the driving gear, and a transmission gear (2222) disposed between the movable gear (2221) and a transmission member and capable of being directly or indirectly connected with or disconnected from the movable gear (2221), the transmission gear (2222) is connected with a second transmission member, and the second synchronizing shaft (2245) penetrates into and is connected with the transmission gear.
8. The vertical blind according to claim 7, wherein a second transmission gear 2223 is provided between the movable gear 2221 and the drive gear 2225, a third transmission gear 2224 is provided between the movable gear 2221 and the transmission gear 2222 of the , the second transmission gear 2223 is kept in mesh with the drive gear 2225 and the movable gear 2221, the movable gear 2221 and the transmission gear 2222 of the are provided on both sides of the third transmission gear 2224, the third transmission gear 2224 can be engaged with or disengaged from the movable gear 2221, and the axial direction of the rotation shaft of each gear is parallel to the axial direction of the output shaft 2121 of the drive mechanism 212.