JPS6047189A - Screen wind-up apparatus - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

Detailed Description of the Invention (a) Technical Field of the Invention The present invention relates to various types of screens, such as curtains, blinds, lightweight shutters, tents, and projection screens, which are rolled up and stored, or rewound and unfolded for use. This invention relates to a winding device.

(B) Background of the Invention In general, this type of screen winding device is equipped with a winding motor and its speed reduction mechanism at one end of the winding shaft, and a manual winding device at the other end. The winding operation rotates the winding shaft of the screen.

However, such a screen winding device requires electric and manual winding mechanisms to be installed at both ends of the winding shaft. Installation space was wasted on both sides of the mounting shaft, and the installation space was not effectively utilized due to the limited width of the screen installation, resulting in inefficient installation.

(c) Purpose of the Invention Therefore, it is an object of the present invention to provide a screen winding device that can completely eliminate and save wasted installation space during installation.

(d) Summary of the Invention This invention eliminates the need for external installation of one end of the winding shaft by housing the winding motor and its speed reduction mechanism in the internal space of the winding shaft. The screen winding device is characterized by extending the winding surface of the shaft to effectively utilize the installation space.

(B) Effects of the invention According to this invention, a cylindrical winding shaft is used,
In the internal space of this winding shaft, the forward/reverse motors and the drive mechanisms of the "iAm gear reduction mechanism" are installed via the support shaft.
This means that the winding shaft can be extended by that amount, and the winding width of the screen can be made sufficiently long compared to the current winding device, and the entire installation space can be used efficiently.

Normally, the screen is automatically wound up, stored, and rewound and unfolded by driving the motor, but in the event of a power outage, etc., the screen can be wound up and unfolded as appropriate by manually operating the manual winding pulley. Manipulate. In addition, since the reduction mechanism that reduces the output of the motor uses a planetary gear reduction mechanism that is small and can obtain high output, it is suitable for installation inside the hollow of the winding shaft and is suitable for winding. 'J
J can be formed compactly.

Kube) Examples of the invention An embodiment of the present invention will be described in detail below based on the drawings.

The drawing shows, as an example of a screen winding device, a roll blind winding device that performs light screening and light shielding, and in FIG. The winding shaft 2, its drive section 3, deceleration mechanism section 4, and the first t? It is composed of a luff lock part 5, a second self-lock part 6, a manual winding part 7, and a blind positioning mechanism part 8.

The above-mentioned winding shaft 2 is formed into a cylindrical body, and a drive 1 for driving and controlling the winding shaft 2 is housed inside the hollow interior. It is provided with recesses 09 and 10, respectively, for attachment to the C.

For installation on the - side (left end side in the figure), the member 9 is fitted into the front end of the winding shaft 2 and attached to the IC end plate 11.
A bottle 13 is attached via a bearing 12 in order to cut off conduction from the winding shaft 2, and the outer end of the bottle 13 protrudes from the end surface of the winding shaft 2, and a circumference formed on this protrusion is used. The stopper 14 is fixedly held and attached to a fixing member (not shown) on the wall surface.

In this installation, the position of the inner end of the bottle 13 is regulated by a receiving member 16 via a steel ball 15.

On the other hand, when mounting the member 10 on the other side (the right end side in the figure), a connecting ring 18 is pivotally supported at the front end of the winding shaft 2 via a bearing 17 in order to prevent conduction from the winding shaft 2. One side is fitted internally, and a fixed case with a square cross section is fixed externally on the other side, and a square fixing protrusion 20 protruding from the center of the outer end surface of the fixing case 19 is attached to a fixing member on the wall (Fig. It is fixedly supported and installed on the outside).

On the other hand, the outer end of a support shaft 21 formed in a long cylindrical body is fitted and fixed in the center of the inner end surface of this fixed case 19, and is prevented from coming out with a fixing pin 20a. 2
The winding shaft 2 is inserted into the winding shaft 2 so as to be supported by a bearing 23 on the inner peripheral surface of the winding shaft 2 via a support ring 22 . and,
On this fixed support shaft 21, respective driving machines 1r4, which will be described later, for the winding shaft 2 are installed.

The above-mentioned drive unit 3 is, for example, an Arata loaf type positive drive unit.
It is composed of a reversing motor 24, and this forward/reverse motor 2
4, both ends of the rotor 26 are connected to the support shaft 21 via bearings 27 and 27 so that the outer rotor 26 does not rotate around the outer periphery of the stator 25 fixed to the shaft at the inner end of the support shaft 21.
It is pivoted on top. .

Further, the inner end of the support shaft 21 is threadedly connected to the driver C of this motor. A lead wire 28 for motor wiring is connected to the hollow interior of the support shaft 21 and is inserted from the outer end side of the shaft 21 to the inner hexameter position and the condenser position. 24 HaON,
OFFfl+! l1llien le.

As a result, the outer rotor 26 is rotated and stopped, and the output of the outer rotor 26 is transmitted to a deceleration mechanism section, which will be described later, to rotate the winding shaft 2.

The above-mentioned speed reduction mechanism section 4 has the first to
The fourth stage planetary gear reduction mechanism 29.30°] 1.32 is arranged in series on the support shaft 21.
Reference numeral 9 denotes a first sun gear 1733 that is integrally connected to the outer end side of the outer rotor 26 and rotates, a first planetary gear 34 that meshes with this, and each of the first to third stage planetary gears. 34, 35, 36..., and a first carrier 38 that transmits the revolution output of the first planetary gear 34... to the second stage 30. .

A shaft serving as a second sun gear is protruded from the outer end of the first carrier 3B, and the power is transmitted to the second stage 30t via the first carrier 38 which also serves as the second sun gear. In this way, the second to fourth stage planetary gear reduction mechanisms 30.3
1.32, the motor output is transmitted to the fourth stage 32 in a similar gear V4:4 configuration. In A4 column 32,
The speed is reduced to a predetermined rotational force, and the winding shaft 2 is rotated at a constant speed. In this case, in the fourth stage 32, the circular surface of the shaft end of the fourth carrier 39 is formed into a hexagonal shape, and a second self-locking member, which will be described later, is formed. Therefore, the fourth planetary gear 40 is in a state where only rotation is allowed, and the second internal gear 41 corresponding to the fourth stage 332 is rotated, and based on the rotation of this gear 41, the fourth planetary gear 40 is rotated. The winding shaft 2 is rotated. Note that the first internal gear 31 described above is integrally fitted onto the inner circumferential surface of the winding shaft 2.

The aforementioned 111th? The reflow vine section 5 is provided as a locking means for locking the blind in the rolled up position and the unfolded position, and is a self-locking mechanism that automatically locks in response to load from the load side. It has a function, for example, as shown in Figures 2 and 3.
As shown in the figure, a protrusion 42 is provided on the outer peripheral surface of the second internal gear P41, and a fixed ring 43 that holds this gear 41 is provided.
A recess 44 is formed in which the projection 42 is fitted, and the projection 42 is restricted by this recess 44. The self-locking function is automatically performed by the reaction force of the second internal gear 41 corresponding to .

The above-mentioned second internal gear 41 and fourth gear 1 Noah 39
are located opposite to each other on the side, and 'X571
A ratchet pawl v45 is engraved on the outer peripheral surface of the '4-T7 rear 39, and a pair of ratchet pawls 46 and 47 are engaged with the ratchet gear 45, respectively, from the forward and reverse directions.

A shaft 4.
8.48 is integrally formed, this shaft 4848 is supported by a fixed ring 43, and both ratchet pawls 46.47 are urged in the meshing direction by a plate spring 49 supported by this fixed ring 43. 0ru.

The width of the meshing portion of the ratchet pawls 46 and 47 described above extends from the width of the gear 45 to the second internal gear 174.
Further, release cam surfaces 51.52 are formed on the left and right parts of the second internal gear 41 of the notch 50, and these release cam surfaces 51.52 In response to the forward and reverse outputs of the motor 24, the ratchet pawls 46 and 47 are engaged and disengaged within a minute rotation range regulated by the protrusion 42 and recess 44 of the second internal gear 41.

j3, the second internal gear 41 rotates in the opposite direction via the fourth planetary gear 40 with respect to the forward and reverse directions of the motor 24.

Figure 2 shows the state of the lock A) that allows the rotation of the winding shaft 2, which occurs when the forward/reverse motor 2/I rotates once and when i1
The rotating part 3 is rotated in the direction, thereby the second internal gear A.4
1 rotates too far counterclockwise, and the winding shaft 2 integrated therewith rotates counterclockwise to unfold the blind to a predetermined position. At this time, the release cam surface 52 pushes up the lower surface of the ratchet pawl 47 against the leaf spring 49, and the ratchet pawl 4
7 and Love - To release the mesh with the lock 1745, the second internal lock 41 rotates in the counterclockwise direction B'
f is accepted. In addition, at this time, the ratchet on the other side (~claw 4G
is the fixed 4th Ki 11 rear 39 Kuchi 1 I ~ Gito 4
5, so there is no problem with rotation.

Figure 3 shows the state of the winding shaft 2 with restricted rotation, which means that when the blind is wound up or unfolded at a predetermined position, it is locked on to stop the blind at that position. Therefore, when the rotation of the motor 24 is stopped, the rotation of the winding shaft 2 is stopped. At this time, a counterclockwise rotational force acts on the winding shaft 2 due to the weight of the blind, and this action causes the recess 44 of the fixed ring 43 to rotate within a minute range where it is locked by the protrusion 42. With this rotation, the release cam surface 52 separates from the lower surface of the ratchet pawl 47, and the ratchet pawl 47 receives the biasing force of the leaf spring 49, meshing with the ratchet gear 45 and rotating the winding shaft 2 counterclockwise. locks the rotation naturally.

Thereby, the blind is automatically self-locked at each stop position of the winding position and the unfolding position based on the rotation stop operation of the motor.

In the case of motor reverse rotation, the rotation of the second internal gear 41 causes the release cam surface 51 to release the engagement of the ratchet pawl 46, so that the second internal gear 11 is allowed to rotate in reverse. As a result, at the initial stage of driving the motor 24, the latch corresponding to the forward/reverse rotation of the motor output, the claw 46.47
The meshing of the blinds is released, the first roll lock part 5 is in the released state, and the first winding shaft 27 is rotated to wind up the blind.

Note that 53.53 is a stopper for the ratchet pawl, and 54 is a cover for the ratchet pawl, which is attached to the fixed ring 43.
=, t tJ is given.

The first self-locking section 5 configured in this manner transmits the output from the motor 24 side to the winding shaft 2 and locks the protruding horn on the winding shaft 2 side.

The aforementioned second self-locking section 6 has the role of transmitting the output from the manual winding pulley described later to the winding shaft 2 and locking the output from the winding shaft 2 side. During automatic winding operation, lock the rotation of the fifth kitria 55 that fixes the fourth kitria 39 (above), prevent the rotation of the winding shaft 2, and move it to the manual winding boo side. On the other hand, during manual winding operation, the lock is released to allow rotation of the fifth carrier 55, and based on this, the C winding shaft 2 is rotated.

This locking mechanism is connected to the outer side of the first self-locking part 5 with a bearing 56 in between.
and the same aircraft 414, the fifth planetary gear 57 corresponds to the aforementioned fourth planetary gear 40, the third internal gear 58 corresponds to the second internal gear A741, and the fifth carrier 55 corresponds to the fourth carrier 39. The inner end of the connecting ring 18 corresponds to the fixed ring 43 and has a similar locking effect, so a description thereof will be omitted.

The above-mentioned manual winding section 7 is, for example, a manual winding pulley 5.
The pulley 59 is rotatably disposed on the outer end of the support shaft 21 and is rotated from the outside. 60
The pulley 59 is mounted vertically below the lower surface of the pulley 59.Furthermore, a hollow shaft for transmission extending long on the support shaft 21 is protruded from the center of the inner end of the pulley 59.
A manual fifth sun gear is provided on the circumferential surface of the inner end of the hollow shaft, and meshes with the fifth planetary gear 57 of the second self-locking portion 6 of the front (e).

The manual winding section 7 configured as J: has a pulley 59.
The output from the manual operation via the button unlocks the second self-locking section 6, thereby rotating the fourth carrier 39, which is integrated with the fifth::SA = rear 55, and based on this, the deceleration mechanism is activated. The entire portion 4 is rotated, and the winding shaft 2 is rotated accordingly. Note that even if the winding shaft 2 is rotated based on the output J from the motor side located on the opposite side, the second
Since both carriers 3, 9, and 55 are fixed by the hook portion 6, the motor output is not transmitted to the manual winding portion 7 side.

The positioning mechanism section 8 of the blind in the front j-h is configured to adjust the positions of the winding setting position 1 when the blind is wound up and stored, and the unfolding setting position when the blind is rewound and unfolded. This positioning operation is performed in accordance with the amount of rotation of the winding shaft 2 (CI direction determination, 'ifl star tooth IZ 41 gear 61 for winding positioning, and planetary gear mechanism for deployment positioning). 62 and corresponding limit I-switches 63 and 64.

The planetary gear mechanism 61 for determining the winding position described above is connected to a fourth internal gear 65 that is integrally fitted into the outer end opening of the winding shaft 2, as shown in FIGS. 4 to 6. , the large-diameter gear of the binion 66, which is equipped with large and small gears of different diameters, meshes with the small-diameter gear, and the sixth and seventh Zang gears 67 and 68 are on both sides of the small-diameter gear, with the sixth Zang gear 67 side facing the winding side, and meshing with the small-diameter gear. The sixth Zang gear 67 side is provided for positioning on the winding side, and the seventh Zang gear V68 side is provided for positioning on the unfolding side.

The double sixth Zang gear 67 has a small diameter shaft 69 protruding from the center of its outer end surface, and a Zang gear is formed on the curved surface of the outer end of the small diameter shaft 69. Also, on this small diameter shaft 69, →)
- The sixth carrier 71 that holds the shaft of the sixth gear 70 that meshes with the gear is Mlf)t, and this sixth gear A/rear 71 is connected to a clutch (to be described later) (rotation is restricted by a shallow groove). The fifth internal gear 72 corresponds to the sixth planetary gear pro.
2 has a small-diameter gear shaft with a zigzag gear formed protruding from the center of the outer end surface, and a seventh planetary gear 73 is mounted on the gear shaft C.
Equally distributed, and 3 to this! The eighth brane gear V is rotated with its shaft held by the seventh gear/rear 75, respectively. The sixth internal gear 1776 corresponds to the seventh brane gear 73 described above, and the eighth brane gear t! 74
The fin internal gears 77 are independent and correspond to -C.

And these 5th to 5th Finterburgi p72.76
．． 77, a limit switch 63 on the winding side is installed, and these gears X are formed with the same diameter on their outer circumferential surfaces and with different rotations. Engagement grooves 78 are provided in the axial direction at each position in the circumferential direction.
...is engraved. Then, these keys +-72, 76,
When the engagement grooves 78 of 77 align with the - straight line, the limit [~actuator 79 of the switch 63 engages and the O
FF operates, stops the rotation of the motor 24, and fixes the winding position.

Note that the above-mentioned winding-side limit switch 633 is set to the ON state when not operated, and is turned OFF when the winding position is reached.

Next, when making fine adjustments to the winding position of the blind, use the fifth to first fin internal gears 1772.76 described above.
．． Clutch mechanism 80 that allows eye movement of 77 and regulates lC
This clutch mechanism 80 necessarily engages and releases the worm gear 1181 and the gear carved on the circumferential surface of the sixth carrier 71, and the worm gear 1-81 f The inner end is attached to member 10.
A pivot shaft 8 is rotatably supported by a pivot pin 82 appropriately supported inside the
3 by moving up and down using the pivot pin 82 as a fulcrum from the outside through the opening window 84 of the pull part IJ 10.
Against Carrier 71. Engaging and disengaging operations are performed.

A winding setting switch 85 is disposed at the upper position of the rotating shaft 83, and the motor 2
4 for fine adjustment. Note that each of these switches is connected to the motor 24 via a lead wire that passes through the support shaft 21. Further, the rotation shaft 83 is constantly urged by a spring 86 in the direction of meshing with the sixth carrier 71.

When adjusting the setting position of the winding side limit switch 63 using the clutch mechanism 80 configured in this manner, the A-mgya 81 normally engages with the sixth kitria 71 to restrict rotation of the sixth kitria 71. As a result, the fifth
The winding side limit 1 switch 63 is in an operable state by allowing rotation of the ?th fin internal. To make fine adjustments from this state, first push the rotation shaft 83 upwards to allow rotation of the sixth carrier 71, and in conjunction with this, the winding setting switch 85 is turned on. Itta 2
4 to rotate the winding shaft 12.

When the predetermined winding position is reached, the rotating shaft 83
Move down to return to the original engagement position, and press this setting switch 8.
5 is turned off, the rotation of the 24 stops and the desired setting position can be adjusted immediately.

In this case, it is possible to reset the worm gear 81 in the disengaged state, in which the so-called engagement grooves 78 .

Also, by rotating the worm gear 81 from the outside, the fifth to fifth internal gears 72, 76, 77
You can easily make fine adjustments to the setting position by rotating the .

The components connected to Moe's seventh sun gear 68 and after are:
It is arranged in exactly the same way as the constituent members after the sixth Zangito 67 described above, and the winding side limit switch 6
A limit switch 64 on the deployment side is installed in place of 3, and a deployment setting switch 87 is installed in place of the winding setting switch 85. Since a positioning mechanism is obtained, its explanation will be omitted.

In FIG. 7, the forward/reverse motor 24 is driven in the forward/reverse direction by switching the forward/reverse changeover switch 88, and is stopped when the switch 88 is in the neutral position.

The winding side limit switch 63, the winding setting switch 85, the rolling side limit switch 1-64, etc. are connected in parallel between them.

In the IC roll blind winding device configured as described above, when the forward/reverse motor 24 rotates in the forward direction or in the reverse direction, the remote motor output reaches a predetermined rotational speed via the first to fourth mu dual-purpose deceleration mechanisms 29 to 32. The rotational force is transmitted to the winding shaft 2, and the winding shaft 2 winds or unrolls the blind at a predetermined rotational speed. 8 is activated to stop the rotation of the motor 2'l, and the winding or unfolding position of the blind is automatically fixed, completing the raising and lowering operation of the blind.

In addition, when manual operation is required, by pulling the row 160 and rotating the pulley 59 in the forward direction and rotating the pulley 59 in the reverse direction,
The winding shaft 2 interlocked with this is rotated to fix the blind in an appropriate predetermined position and then used for winding or unfolding.

(d3, top) In one embodiment of the 21S, a worm was used for the clutch mechanism used during resetting positioning, but the invention is not limited to this, and other members may also be used.
The sixth planetary gear 70 and the sixth carrier 71, which are used as a part of the clutch mechanism, may be provided in a desired clutch mechanism as necessary, such as by forming 414 so as to have mutually opposite roles. In addition, for the winding shaft 2, if the winding width of the screen is long or the winding distance is large, a reinforcing winding pipe is fitted and fixed on the winding shaft as appropriate depending on the required strength. .

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a longitudinal sectional front view of a main part showing a winding device for a roll blind. Figures 2 and 3 are enlarged longitudinal sectional side views of the main parts showing the reluf lock mechanism. Fig. 4 is an enlarged longitudinal sectional front view of the main part showing the positioning of the device (shallow groove section). Fig. 5 and Fig. 6 are enlarged longitudinal sectional side views of the main part. Fig. 7 is a control circuit diagram of the motor. 1... Roll blind winding device 2... Winding shaft 3... Drive section 4... Reduction mechanism section 5.6... Self-locking section 7... Manual winding section 8...・Blind positioning mechanism section 21...Support shaft 24...Forward/reverse motors 29-3
2...5 planetary gear reduction mechanisms...Manual take-up pulley Fig. 2 Fig. 3 Fig. 4 Fig. 5 Fig. 1゜

Claims (1)

[Claims] 1. A winding shaft for a cylindrical body is provided, and the inner end side of a support shaft whose outer end is fixed on the outside is inserted into one open end of this winding shaft, and the inner end side is inserted onto this support shaft. A forward/reverse motor and a planetary gear reduction mechanism that decelerates the output of this motor are arranged, and the output of this planetary gear reduction mechanism drives a winding shaft. A screen winding device equipped with a manual winding pulley.