JPH0545758Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> In the present invention, a plurality of stoppers expand and contract while being guided in grooves in the longitudinal direction of the vertical frame on both sides of the opening, and open and close the opening. This invention relates to a lifting/lowering opening/closing device for blinds that can be tilted.

<Prior Art> As a conventional blind lifting/closing device of this type, there is a blind lifting/lowering opening/closing device described in Japanese Utility Model Application Laid-Open No. 61-78993.

This conventional lifting/lowering opening/closing device has a configuration as shown in FIGS. 6 to 9.

FIG. 6 is a sectional view showing the opening/closing unit A of this conventional blind lifting/closing device.

Sleeves 41, 41 are rotatably disposed on the outer peripheral surface of the main shaft 10, and the sleeves 41, 41 are fixed to disks 16, 16.

The sleeves 41, 41 are provided with holes 42, 42 communicating with the outer circumferential surface and the inner hole.

The outer circumferential surface of the main shaft 10 is provided with recesses 43, 43 that communicate with the holes 42, 42 of the sleeves 41, 41 when the slats 6...6 are in the rotation ready position.

One end communicates with the holes 42, 42 of the sleeves 41, 41, and the recesses 43, 43 on the outer peripheral surface of the main shaft 10.
Cam pins 44, 44 arranged so that they can be inserted into and removed from the
Rollers 45, 45 are attached to the other end, and the rollers 45, 45 are connected to the fixed cam plate 4.
6 and 46 and cam holes 48 and 48 connected to the circumferential holes 47 and 47, respectively.

The slats 6...
After the brackets 11, 1 are rotated by a certain angle, engaging portions 49, 49 are formed to prevent the rotation of the brackets 11, 1.
A notch device 5 in which steel balls 51, 51 fixed to 2, 11, 12 and engaged with the engaging portions 49, 49 are disposed.
0,50 are provided.

Conventional opening/closing unit A configured in this way
In the closed state of each slat 6...6, the cam pins 44, 44 are connected to the holes 42, 42,
It fits into recesses 43, 43 communicating with 2.

When the main shaft 10 is rotated from this closed state to open the slats 6...6, the sleeves 41, 41 are also rotated by the cam pins 44, 44 fitted into the recesses 43, 43. Furthermore, the sleeve 4
By rotating the discs 16, 16 fixed to the discs 1, 41, the discs 15, 15 are connected to the discs 16, 16 by the stoppers 19, 19.
The tension members 21, 21 fixed to the slats 6...6 are tilted by pulling the tension members 21, 21 to tension them toward the open side.

FIGS. 7a and 7b are sectional views taken along the line DD in FIG. 6, showing the state of engagement between the cam plates 46, 46 and the rollers 45, 45 of the conventional blind lifting/lowering opening/closing device.

As the main shaft 10 rotates, the rollers 45, 45, which are rotatably attached to cam pins 44, 44 that rotate in conjunction with the main shaft 10, rotate from FIG. 7b toward FIG. 7a, rotating around the circumference. The cam pin 4 is fitted into and moved from the holes 47, 47 into the cam holes 48, 48.
4 and 44 and the recesses 43 and 43 are released. As a result, the sleeves 41, 41 stop rotating, and at the same time, the steel balls 50 of the notch devices 50, 50 are engaged with the engaging portions 49, 49 provided on the discs 16, 16.
1 and 51 are engaged, and each slat 6...6 is held in a state inclined toward the open side.

Conversely, when rotating the main shaft 10 from the open side to the closed state, the protrusions 2 provided on the chains 24, 24
By pressing and rotating the stoppers 19, 19 arranged between the discs 15, 16, 15, 16, the slats 9, 29 pull the other tendon 20, 20 and rotate the slats 6...6 in the direction of overlapping each other. move. At the same time, the sleeves 41, 41 fixed to the discs 16, 16 also rotate, and the cam pins 44, which are fitted into the holes 42, 42 provided in the sleeves 41, 41,
44, the rollers 45, 45 disposed at the ends of the cam pins 44, 44 rotate from FIG. 7a toward FIG.
by moving the other end to the recess 4 of the main shaft 10.
Insert into 3,43.

FIG. 8 is a top view showing a drive unit B' of a conventional blind lifting/lowering opening/closing device, and FIG. 9 is a sectional view of the drive unit B'.

The drive shaft 33 has a plurality of protrusions 52...52 having a semicircular cross section along the axial direction on the outer circumferential surface of the central part, and cylindrical shaft parts 53, 53 sandwiching the protrusions 52...52, The cylindrical shaft portions 53, 53 are connected to the main shaft 10.

The cylindrical clutch 54 has a flange portion 55 on its outer peripheral surface, and has a protrusion 52 of the drive shaft 33 on its inner peripheral surface.
. . . 52, and a plurality of engaging pawls 57 . . . 57, 58 .
58 is formed. The cylindrical clutch 54 is arranged so as to be movable in the axial direction along the protrusions 52 . . . 52 of the drive shaft 33.

The cylindrical shaft portions 53, 53 of the drive shaft 33 are provided with clutch gears 59, 59, with the cylindrical clutch 54 in between.
60 are rotatably arranged to face each other, and the clutch gears 59 and 60 have engaging pawls 6 on both end surfaces thereof.
1...61, 62...62 are provided so as to be able to engage and disengage with the engaging claws 57...57, 58...58 of the cylindrical clutch 54.

The electric operation shaft 63 connected to the motor M includes
It has a gear portion 64 that meshes with the clutch gear 59.

The manual operating shaft 39 has a gear portion 65 that meshes with the other clutch gear 60 .

The cylindrical clutch 54 has a clutch gear 59
A coil spring 6 arranged on the outer periphery of the side cylindrical shaft portion 53
6 toward the other clutch gear 60, and the engaging pawls 58...5 of the cylindrical clutch 54
8 and the engagement pawls 62 .

On the other hand, the cylindrical clutch 54 is pushed through a roller 67 that abuts against the flange portion 55 of the cylindrical clutch 54.
By pulling the pull cable 68, the clutch gear 60 is disengaged from the engagement pawls 62...62,
Engagement pawl 57 on the opposite side...57 and clutch gear 59
By engaging the engaging claws 61 .

<Problems to be solved by the invention> However, in such a conventional blind lifting/lowering opening/closing device, when each slat 6...6 is tilted from the closed state to the open side, the recess 56 provided in the main shaft 10 , 56 and cam pins 44, 44
Since a high load is applied to the small fitting portion between the rollers 45, 45, the shafts of the rollers 45, 45 sometimes bend. If the axes of the rollers 45, 45 are bent, the cam pins 44, 44 will not be released from the recesses 56, 56 even if the rollers 45, 45 move from the circumferential holes 47, 47 to the cam holes 48, 48, and each slat 6
... 6 does not rise and stops, or the rollers 45, 45 move from the cam holes 48, 48 to the circumferential holes 47,
Even if the cam pin 4 is moved to the recessed portion 56, 56
When 4 and 44 are not inserted and closed, each slat 6...6
This caused problems such as the lens remaining tilted toward the open side, which caused problems with its durability.

Furthermore, in drive unit B', manual
An electric switching operation is required, and when switching, the engaging claws 57...5 of the cylindrical clutch 54 are used.
7, 58...ends of 58 and clutch gears 59, 6
The ends of the engaging claws 61...61, 62...62 may come into contact with each other and not engage. In this case, electric
Of course, both manual and manual operations will become inoperable.
When each of the slats 6...6 is in an upwardly folded state, an accident may occur in which the slats 6...6 fall due to their own weight.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems and provide a durable and highly safe lifting/closing device for blinds.

<Means for solving the problems> In order to achieve the above object, the present invention adopts the following configuration.

That is, each slat 6, 6 for opening and closing the opening formed by the frame 1 has its both sides connected to each connecting lever 7...7 which is fitted into the groove 5, 5 of the vertical frame 4, 4, respectively. , 7', 7', and each connecting lever is connected by a link 9, and the connecting lever 7' located at the lowest end of the connecting levers is located within the upper frame 2 of the frame body. and sprockets 22, 22 fixed to the main shaft 10 rotatably supported via bearings on brackets 11, 12 fixed to the upper frame 2, and a sprocket 23 attached to the lower ends of the vertical frames 4, 4. It is connected to a moving body 8 which is connected to chains 24, 24 disposed in mesh with the vertical frames 4, 23 so as to be movable upward and downward as the chains move, and the connecting lever At both ends of the connecting lever 7 located at the uppermost end of the main shaft 10, there are tension members 20, 20 provided in the opening/closing unit A, which is constructed at the end of the main shaft 10 and rotates the slat 6 by a certain angle by the rotation of the main shaft 10. In the blind lifting/closing device, the opening/closing unit A is configured to open and close the opening by rotating each slat by a certain angle as the main shaft 10 rotates, with one end connected to each other. discs 15 and 16 facing each other across the sprocket 22 fixed to the main shaft 10 and fixed to bearings arranged on the main shaft 10; and a stopper located between the discs 15 and 16 and fixed to both discs. 19, and the bracket 11 is attached to the disc 16 located on the side of the bracket 11.
A stopper bolt 27 fixed to the periphery of a plate surface facing oppositely to the spring guide 26 fitted to the outer circumferential surface of the main shaft 10 between the disc 16 and the bracket 11; A coil spring 25 is disposed and has one end fitted and fixed to the disc 16 and the other end to the bracket 11 to rotate each slat 6 from a closed position to an open position by a spring force, and after each slat 6 is lowered, In order to rotate the slat 6 by a certain angle toward the closing side against the spring force of the coil spring 25, a protrusion 29 provided on the chain 24 contacts the stopper 19, and a projection 29 contacts the stopper bolt 27 to lower the slat 6. It consists of a stopper 28 that is fitted and fixed to the brackets 11 and 12 parallel to the main shaft to position the rear closing position, and the main shaft 10 has a gear 35 fixed thereto that meshes with a gear 36 fixed to the main shaft 10. It is connected to a drive shaft 33 arranged parallel to the main shaft 10, and the drive shaft 33 includes a sun gear 31 connected to the motor shaft 30 of the motor M, and a sun gear 31 arranged on the outer peripheral surface of the sun gear 31. A carrier 34 connecting a plurality of planetary gears 32 that engage with the gear 31 is fitted and fixed to constitute an electric opening/closing means, and is connected to a worm wheel 38 disposed on the drive shaft 33. A manual opening/closing means is constituted by an internal sun gear 37 that engages with the planetary gear 32, a worm gear 40 that engages with the worm wheel 38, and a main operating shaft 39 that is arranged to protrude from the upper frame 2. This is a blind lifting/lowering opening/closing device.

<Operation> When the blind opens its opening,
By driving motor M, motor shaft 3
The rotational force of 0 is transmitted to the drive unit B, and in the drive unit B, a sun gear 31 fixed to the motor shaft 30, a plurality of planet gears 32...32 meshing with the sun gear 31, and the planet gears 32 ……
is transmitted to the drive shaft 33 via a carrier 34 that is integrally coupled with 32 and fixed to the drive shaft 33,
Further, the rotational force of the drive shaft 33 meshes with a gear 35 fixed to the drive shaft 33, and the main shaft 10
is transmitted to the main shaft 10 via a gear 36 fixed to the main shaft 10. The rotation of the main shaft 10 drives chains 24, 24 that engage sprockets 22, 22 fixed to the ends of the main shaft 10, and
The movable bodies 8, 8 fixed to 4, 24 move downward, and the lowermost connecting levers 7', 7' also move downward. As the connecting levers 7', 7' move, each of the connecting levers 7...7 descends while stretching the respective folded links 9...9.
After descending, the protrusions 29, 29 of the chains 24, 24 contact the stoppers 19, 19, and the stoppers 1
9, 19 and accumulate the spring force of the coil springs 25, 25, the discs 15, 16, 15, 1
6 is rotated, and one of the tension members 20, 20 fixed to the discs 15, 15 is pulled, and the slat 6...
Tilt 6 in the direction of overlapping. The discs 16, 16
The stopper bolts 27 provided on the discs 16, 16 rotate until they come into contact with the stoppers 28, 28, and when the stopper bolts 27, 27 come into contact with the stoppers 28, 28, the slats 6
... 6 are held in an overlapping state.

On the other hand, due to the reverse rotation of the main shaft 10, the chain 2
The stoppers 19, 19, which were pressed by the protrusions 29, 29 of 4, 24, are replaced by the coil springs 25,
25 rotates together with the protrusions 29, 29 of the chains 24, 24, and the stoppers 19, 1
The disks 15, 16, 15, 16 to which the disks 9 are fixed are also rotated, and the tension members 21, 21, which are fixed to the disks 15, 15, tilt the tension slats 6...6 toward the open side. When the main shaft 10 is further rotated, the rotation of the disks 15, 16, 15, 16 is stopped at the neutral position where the return force of the coil springs 25, 25 is removed, and the moving bodies 8, 8 connected to the chains 24, 24 are rotated. By moving upward, each connecting lever 7...
7 and 7' rise while folding the links 8...8 to open the opening.

In addition, when opening/closing the blind manually instead of electrically opening/closing by motor drive, a form gear 40 that engages with a worm wheel 38 disposed on the drive shaft 33 of the drive unit B via a bearing may be used. This is done by rotating the manual operation shaft 39 provided.

<Example> Below, an example of the present invention will be described in detail based on the drawings.

FIG. 1 is a sectional view showing an embodiment of the blind lifting/closing device of the present invention, and FIG. 2 is a side view showing an embodiment of the blind lifting/closing device of the present invention.

1 is a frame body, and the frame body 1 is formed from an upper frame 2, a lower frame 3, and vertical frames 4, 4. The vertical frame 4, 4
Grooves 5, 5 are provided on the opposing surfaces of.

Reference numeral 6 denotes a slat that opens and closes the opening formed in the frame 1, and both ends of the slat 6...6 are inserted upward and downward into the grooves 5, 5 of the vertical frames 4, 4 along the grooves. Each connecting lever 7 is inserted so as to be movable in the direction...
7, 7', 7'.

Reference numeral 8 denotes a movable body, to which the lowermost connecting levers 7', 7' are pivotally mounted.

Reference numeral 9 denotes a link that connects the respective connecting levers 7...7, 7', 7'.

FIG. 3 is a sectional view showing the opening/closing unit A of the blind lifting/closing device of the present invention.

Reference numeral 10 denotes a main shaft disposed within the upper frame 2 of the frame 1, and is supported by bearings 13, 14, 13, 14 fitted to brackets 11, 12, 11, 12.

At the end of the main shaft 10, a disk 15, 1 is provided on the outer peripheral surface.
6, 15, 16 are fixed and bearings 17, 18, 17,
18 is supported. Stoppers 19, 19 are fixed between the discs 15, 16.

20 and 21 are attached to the plate surface of the disk 15.
The tension members 20, 21, 20, 21 are fixed at one end facing each other across the center, and the other ends of the tension members 20, 21, 20, 21 are fixed to both ends of the connecting levers 7, 7 located at the top, respectively. There is.

22 is a sprocket provided on the main shaft 10 between the bearings 17 and 18.

A sprocket 23 is pivotally mounted at the lower end of the vertical frame 4 so as to face the sprocket 22.

Reference numeral 24 designates a chain stretched between the sprockets 20 and 21. The chain 24 meshes with the sprockets 20 and 21, respectively, and has both ends fixed to the upper and lower ends of the movable body 8, respectively.

Reference numeral 25 denotes a coil spring, and the coil springs 25, 25 are connected to spring guides 26, 26 that are rotatably arranged to fit on the outer peripheral surface of the main shaft 10.
One end is attached to the outer periphery of the disc 16, and the other end is attached to the bracket 11.
The mating is fixed.

27 is a stopper bolt, and the stopper bolts 27, 27 are fixed to the plate surface of the disc 16.

28 is a stopper fixed to the brackets 11, 12, 11, 12.

Figures 4a and 4b show the disc 16 and the chain 2.
FIG. 4 is a cross-sectional view taken along line CC in FIG. 1 showing the relationship with FIG.

29 is a protrusion provided on the chain 24;
The protrusions 29, 29 are configured to come into contact with stoppers 19, 19 fixed between the disks 15, 16 when each slat 6...6 is lowered. The projections 29, 29 press the stoppers 19, 19 against the spring force of the coil springs 25, 25 fixed to the plate surfaces of the discs 16, 16 by further rotating the main shaft 10 toward the closing side, By rotating the discs 15, 15 to a position where the stopper bolts 27, 27 fixed to the plate surfaces contact the stoppers 28, 28, one tension member 20, 20 is pulled, and each slat 6...6 Tilt.

On the other hand, if the main shaft 10 is rotated to the open side,
The stoppers 19, 19 are released from the pressure by the protrusions 29, 29, and the biased coil springs 2
5, 25 by the return force of the coil spring 2
Disk 1 until the neutral position where the return force of 5 and 25 disappears.
Rotate 6 and 16. The rotation of the disc 16 causes the discs 15, 1 to be connected by stoppers 19, 19.
The other tension members 21, 21 fixed to the slats 6 are pulled to tilt each slat 6...6 toward the open side.

FIG. 5 is a sectional view showing the drive unit B of the blind lifting/closing device of the present invention.

M is a motor, and a motor shaft 30 of the motor M is fitted and fixed to a sun gear 31.

A plurality of planetary gears 32 .

A gear 35 is fitted and fixed on the drive shaft 33, and the gear 35 is connected to a gear 36 provided on the main shaft 10.
is engaged with.

In this way, the gear 36 fixed to the main shaft 10
a drive shaft 33 that fixes a gear 35 meshing with the main shaft 10 and is arranged parallel to the main shaft 10; a sun gear 31 connected to the motor shaft 30 of the motor M;
An electric opening/closing means is constituted by a carrier 34 which is fitted and fixed to the drive shaft 33 by connecting a plurality of planetary gears 32 disposed on the outer peripheral surface of the drive shaft 32 and engaged with the sun gear 31.

37 is an internal sun gear;
7 engages with the planetary gears 32 . . . 32 and is connected and fixed to a worm wheel 38 disposed on the drive shaft 33 .

A worm gear 40 formed at the end of a manual operation shaft 39 protruding from the upper frame 2 is engaged with the worm wheel 38 .

In this way, the worm wheel 38 disposed on the drive shaft 33, the internal sun gear 37 connected to the worm wheel 38 and engaging with the planetary gear 32, and the worm gear 40 meshing with the worm wheel 38.
and a manual operation shaft 39 protruding from the upper frame 2 constitute a manual opening/closing means.

During normal electric operation using the motor M, the rotation of the motor M rotates the sun gear 31 that is fitted and fixed to the motor shaft 30. A plurality of planetary gears 32 . The planetary gear 32...
32 are rotatably connected by a carrier 34, and the carrier 34 also rotates as the planetary gears 32...32 revolve. The rotation of the carrier 34 is
A gear 35 provided on a drive shaft 33 to which the carrier 34 is fixed engages with a gear 36 provided on the main shaft 30 to rotate the main shaft 30 to open and lower the blind.

On the other hand, when performing manual operation due to power outage or other reasons, use the handle (not shown), etc. to manually operate the manual operation shaft 3.
Rotate 9. The rotation of the manual operation shaft 39 rotates the worm wheel 38 which is engaged with the worm gear 40 formed at the end of the manual operation shaft 39 . The worm foil 3
8 is rotated by the internal sun gear 37 which is connected and fixed to the worm wheel 38.
The signal is transmitted to a plurality of planetary gears 32...32 that engage with the planetary gears 32...32. The rotation of the planetary gears 32 . . . 32 rotates the main shaft 30 through the same transmission path as in the electric operation described above to open and lower the blind.

<Effects of the invention> As explained above, the blind lifting/closing device of the present invention eliminates the roller cam mechanism by utilizing the spring force of the coil spring to tilt each slat toward the opening side in the opening/closing unit. As a result, durability has improved.

Furthermore, by adopting a planetary gear mechanism for the drive unit, the main shaft is always engaged with the motor shaft and the manual operation shaft, eliminating malfunctions and providing high safety with no accidents such as falling slats.

[Brief explanation of the drawing]

Fig. 1 is a sectional view showing an embodiment of the blind lifting/closing device of the present invention, Fig. 2 is a side view showing an embodiment of the blind lifting/closing device of the present invention, and Fig. 3 is a sectional view showing an embodiment of the blind lifting/closing device of the present invention. Cross-sectional views showing one embodiment of the opening/closing unit of the opening/closing device, Figures 4a and 4
Figure b is a sectional view taken along the line C-C in Figure 1, Figure 5 is a sectional view showing an embodiment of the drive unit of the blind lifting/closing device of the present invention, and Figure 6 is the opening/closing diagram of the conventional blind lifting/closing device. Sectional view showing the unit, No. 7
Figures a and 7b are sectional views taken along the line DD in Figure 6, Figure 8 is a top view showing a drive unit of a conventional blind lifting/closing device, and Figure 9 is a sectional view of the drive unit. 1... Frame body, 2... Upper frame, 3... Lower frame, 4...
Vertical frame, 5...Groove, 6...Slat, 7,7'...
Connection lever, 8... Moving body, 9... Link, 10
... Main shaft, 11, 12 ... Bracket, 13, 1
4... Bearing, 15, 16... Disc, 17, 18...
... Bearing, 19 ... Stopper, 20, 21 ... Tension material, 22, 23 ... Sprocket, 24 ... Chain, 25 ... Coil spring, 26 ... Spring guide, 27 ... Stopper bolt, 2
8... Stopper, 29... Protrusion, 30... Motor shaft, 31... Sun gear, 32... Planet gear,
33... Drive shaft, 34... Carrier, 35, 36
... Gear, 37 ... Internal sun gear, 38 ... Worm wheel, 39 ... Manual operation shaft, 40 ... Worm gear, A ... Opening/closing unit, B ... Drive unit, M ... Motor.

Claims (1)

[Claims for Utility Model Registration] Both ends of the slats 6, 6 for opening and closing the opening formed by the frame 1 are fitted into the grooves 5, 5 of the vertical frames 4, 4, respectively. Each connecting lever 7
...7, 7', 7', and each connecting lever is connected by a link 9, and the connecting lever 7' located at the lowest end of the connecting lever is inside the upper frame 2 of the frame body. Sprockets 22, 22 fixed to the main shaft 10, which are rotatably supported via bearings on brackets 11, 12 fixed to the upper frame 2, and sprockets attached to the lower ends of the vertical frames 4, 4. It is connected to a moving body 8 which is connected to chains 24, 24 disposed in mesh with the vertical frames 4, 23 so as to be movable upward and downward as the chains move. At both ends of the connecting lever 7 located at the uppermost end of the connecting lever, there are tension members 20 provided in the opening/closing unit A, which is constructed at the end of the main shaft 10 and rotates the slat 6 by a certain angle by the rotation of the main shaft 10. , 21 are connected to each other, and each slat is rotated by a certain angle as the main shaft 10 rotates to open and close the opening. , discs 15 and 16 facing each other with a sprocket 22 fixed to the main shaft 10 in between and fixed to bearings arranged on the main shaft 10, and discs 15 and 16 located between the discs 15 and 16 and fixed to both discs. a stopper 19, a stopper bolt 27 fixed to the periphery of the plate surface facing the bracket 11 on the disc 16 located on the side of the bracket 11;
A spring guide 26 is fitted on the outer circumferential surface of the main shaft 10 between the spring guide 6 and the bracket 11; a coil spring 25 that is fixed together and rotates each slat 6 from a closed position to an open position by a spring force;
After each slat 6 is lowered, a protrusion 29 provided on the chain 24 that contacts the stopper 19 and a stopper bolt 27 rotate the slat 6 by a certain angle toward the closing side against the spring force of the coil spring 25. The brackets 11,1 are arranged so as to abut each other and position the closed position after the slat 6 is lowered.
2 and a stopper 28 fitted and fixed parallel to the main shaft 10, the main shaft 10 fixes a gear 35 that meshes with a gear 36 fixed to the main shaft 10, and a drive disposed parallel to the main shaft 10. A sun gear 31 connected to a motor shaft 30 of a motor M and a sun gear 3 connected to a shaft 33 are connected to the drive shaft 33.
A carrier 34 which connects a plurality of planetary gears 32 disposed on the outer peripheral surface of the sun gear 31 and engaged with the sun gear 31 is fitted and fixed to constitute an electric opening/closing means, and a worm disposed on the drive shaft 33. foil 38
and an internal sun gear 37 connected to the worm wheel 38 and engaged with the planetary gear 32, and a manual operating shaft 39 that is provided with a worm gear 40 that meshes with the worm wheel 38 and is arranged to protrude from the upper frame 2. A blind lifting/lowering opening/closing device comprising a manual opening/closing means.