JPS60138196A - 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 provides a method for winding up and storing various screens such as car anchors, blinds, lightweight shutters, tents, and projection screens, or (unwinding and unfolding them). This invention relates to a screen winding device.

(B) Background of the Invention Normally, this type of screen winding device drives a winding shaft that winds up the screen by a motor via a speed reduction mechanism, and the winding or unfolded screen is thereby driven by a motor via a speed reduction mechanism. An electromagnetic brake is used to fix the screen at its stop position, and this brake action is linked to the rotation stop operation of the motor to fix the screen, thereby preventing the screen from slipping off due to its own weight.

However, such screen winding devices require an innovative electromagnetic brake in addition to the motor and its speed reduction mechanism.
This not only increases the size of the entire device equipped with these, but also requires a spring mechanism for the brake to stop the electromagnetic brake in conjunction with the motor OFF. This had the problem of being uneconomical due to the large number of parts.

(c) Purpose of the Invention Therefore, it is an object of the present invention to provide a screen winding device capable of stopping the screen without requiring the spring force of an electromagnetic brake.

(D) Summary of the Invention This invention is based on the fact that the winding motor and its speed reduction mechanism are housed in the internal space of the winding shaft, thereby reducing the size of the end of the winding shaft, and the stopping position of the winding shaft when the screen is raised and lowered. A screen winding device is characterized in that the screen can be automatically locked by a self-locking mechanism.

(e) Effects of the invention According to the invention, a forward/reverse motor and a planetary gear reducer am
Since each drive mechanism is internally installed, there is no need for a drive mechanism on the outside of the end of the winding shaft, and the winding shaft can be extended by that amount, which is much cleaner than current winding devices. The winding width can be sufficiently long, and the entire installation space can be used efficiently without wasting space.

Since this screen winding device is equipped with a self-locking mechanism, it is possible to lock the rotation of the winding shaft at the same time as stopping the motor output, and automatically fix the winding and unfolding positions of the screen. .

In particular, this self-locking mechanism uses a coiled spring (IF) and has a simple structure that allows locking and unlocking functions to be performed by pressing the button, so it requires fewer components and can be manufactured at low cost.

In addition, the reduction mechanism that reduces the output of the motor uses a planetary gear reduction mechanism that is small and can obtain high output, so it is suitable for installation inside the hollow of the winding shaft and the winding device. 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 the screen winding device, a winding device for a roll blind that provides sunshading and light blocking.
In the figure, this roll blind winding device 1 includes a winding shaft 2 equipped with a blind, a drive section 3 thereof, a deceleration mechanism section 4, a first self-locking section 5, a second self-locking section 6, It is composed of a manual winding section 7 and a blind positioning mechanism section 8.

The above-mentioned winding shaft 2t is formed into a cylindrical body, and a drive mechanism for driving and controlling the winding @ 2 is installed inside this hollow interior, and this shaft 2 is attached to the wall surface at both ends. The mounting for this comprises members 9 and 10, respectively.

The member 9 is attached to the end plate 11 fitted inside the open end of the winding shaft 2 via a bearing 12 in order to cut off conduction from the winding shaft 2. For installation, use pin 1
3 is attached, and this attachment is done by having the outer end of the pin 13 protrude from the end surface of the winding shaft 2, and the rotation stopper 14 formed on this protruding portion being fixed and held by a fixing member 14a on the wall surface. It will be done.

In this attachment, the position of the inner end of the pin 13 is regulated by a receiving member 16 with a steel ball 15 interposed therebetween.

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 attached to the open end of the winding @ 20 via a bearing 17 to block conduction from the winding shaft 2. A fixing case 19 is fitted inside on one side and externally fitted 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 the fixing member 14 on the wall surface. It is fixedly supported and attached to b.

On the other hand, the outer end of a support shaft 21 formed in an elongated cylinder 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, and the inner end thereof is a winding shaft. 2
They are inserted into the inner side of the winding shaft 2 and are supported by a bearing 23 on the inner circumferential surface of the winding shaft 2 via a support ring 22. and,
Each drive mechanism for the winding shaft 2, which will be described later, is provided on the fixed support shaft 21.

The aforementioned drive unit 3 is constituted by, for example, an outer rotor type forward/reverse motor 24, and this forward/reverse motor 24 has a stator 25 fixed on the shaft at the inner end of the support shaft 21.
Both ends of the rotor 26 are pivotally supported on the support shaft 21 via bearings 27.degree. 27 so that the outer rotor 26 rotates around the outer periphery of the rotor 26.

Further, a capacitor C of this motor is screwed to the inner end side of the support shaft 21. 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 of the shaft 21 to the inner motor position and the capacitor position. -O
FF controlled.

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°31.32 is arranged in series on the support shaft 21, and the first stage 2
Reference numeral 9 denotes a first sun gear 33 that is integrally connected to the outer end side of the outer rotor 26 and rotates, and a first sun gear 9 that meshes with the first sun gear 33.
The first internal gear 36 meshes with and covers the planetary gears 34, 34, 35, and the first to second stage planetary gears 34, 35, and the first planetary gears 34...
a first carrier 37 that transmits the revolving output to the second stage 30;
It consists of

A shaft serving as a second sun gear is protruded from the outer end of the first carrier 37, and the power is transmitted to the second stage 30 via the first carrier 37 which also serves as the second sun gear. This second
The stage 30 is connected to the third stage via a first self-locking part 5, which will be described later.
- The power is transmitted to the fourth stage 31, 32, and the planetary gear reduction mechanism 30.31.3 of these second to fourth stages
2 has a gear configuration similar to that of the first stage 29, and the motor output is transmitted to the fourth stage 32. In the fourth stage 32, the motor output is decelerated to a predetermined rotation speed and the winding shaft 2 is rotated. Rotate at a constant speed. In this case, in the fourth stage 32, the peripheral surface of the shaft end of the fourth carrier 38 is formed into a hexagonal shape, and is fitted and fixed to the fifth carrier of the second self-locking section 1', which will be described later, to prevent rotation. Therefore, the fourth planetary gear 39 is in a state where only rotation is allowed, and the third stage 31 and fourth stage 32
The second internal gear 1740 corresponding to the second internal gear 1740 is rotated, and the winding shaft 2 integrated with the gear 40 is rotated based on the rotation of the gear 40. Note that the first and second internal gears 36 and 40 of the upper 'rflS are integrally fitted onto the inner circumferential surface of the winder @2.

Furthermore, the second internal gear 40 rotates in the opposite direction to the forward and reverse directions of the motor 24 via the fourth planetary gear 39.

The above-mentioned first self-locking section 5 has a self-locking function that automatically locks the position where the Brighton is wound up and the position where it is unfolded and used in response to the load from the load side. , a fixed ring 41, a locking spring 42, a second driving carrier 43, and a second driven carrier 44.

The above-mentioned fixed ring 41 is formed in an annular shape on the inner end side of the second internal gear 40, and is disposed between the second and third stage planetary gear reducers wJ30.31. One locking spring 42 is installed on the inner peripheral surface.

The locking spring 42 described above is formed in a coil shape, and the outer circumferential surface of the spring 42 is fitted in sliding contact with the inner circumferential surface of the fixed ring 41 described above, and both ends of the spring 42 The portion has opposing protrusions 45.4 protruding inwardly in the radial direction.
5 is provided in a protruding manner, and is normally integrated with the fixed ring 41 by the biasing force of this spring 42 in the direction of diameter expansion.

Then, on the inner circumference of this spring 42, a slight gap is formed between the outer circumferential surface of the shaft portion of the second driving carrier 43 and the second driven carrier 44 and the inner circumferential surface of the spring 42. The shaft portions 43 and 44 are fitted into the spring 42.

The second drive carrier 43 has a large diameter shaft on the inner end that pivotally supports each planetary gear 35 of the second stage 30, and a small diameter shaft on the outer end has a half-moon cross section in the axial direction. It is formed into a shape and inserted into the above-mentioned spring 42 from its inner end surface side.

The second driven carrier 44 has a small-diameter shaft portion on the inner end side formed in a semicircular cross section in the axial direction, and this shaft portion is
It is inserted into the spring 42 from its outer end face side in correspondence with the half-moon-shaped shaft portion of the drive carrier 43, and its outer end is provided to also serve as a third sun gear for the third stage planetary gear mechanism 31.

Furthermore, these carriers 43 and 44 are arranged so that the spring 42 is inserted between the opposing surfaces of the half-moon shaft portions inserted into each other from both sides on the inner circumferential surface of the spring 42 from both sides of the plane facing each other in the radial direction.
Both protrusions 45 and 45 are interposed, and these protrusions 4
They are arranged opposite to each other with an allowable space 46 that allows initial rotation in the circumferential direction of 5.45 mm.

In this case, even if the second drive carrier 43 is rotated in either the forward or reverse direction, the spring 42 is initially set so that it does not rotate in the direction of loosening the spring 42 via the protrusion 45 on the negative side or the other side. 4
inserted into one side of 2. On the other hand, the second driven carrier 44 facing the opposite side is inserted into the other side of the spring 42 which is set in the direction of tightening the spring 42 via the protrusion 45 in both forward and reverse directions. be done.

Furthermore, the gap was set between the outer circumferential surface of these carriers 43 and 44 and the inner circumferential surface of the spring 42 when the diameter of the spring 42 was reduced by the lock release operation described later and the fixing action of the spring was released. This is to allow the inner and outer circumferential surfaces of the spring 42 to uniformly restrict diameter reduction in the circumferential direction without causing uneven contact. Reference numeral 47 denotes a spring housing cylinder fitted inside the fixed ring.

FIG. 2 shows a lock-off state in which rotation of the winding shaft 2 is allowed, in which the forward/reverse motor 24 rotates in the forward and clockwise direction, thereby causing the second internal gear 40 to rotate counterclockwise. The winding shaft 2, which is integrated with the winding shaft 2, rotates counterclockwise to extend the blind to a predetermined position and unfold it.
Based on the output from By releasing the lock, rotation with respect to the second driven carrier 44 is permitted, and power is transmitted to the subsequent stage.

FIG. 3 shows a lock-on state in which the rotation of the winding shaft 2 is restricted. This is a lock-on state in which when the blind is wound up or unfolded at a predetermined position, the blind is locked to stop at that position. When the rotation of this motor 24 is stopped, the rotation of the winding shaft 2 is stopped, but at this time, a counterclockwise rotational force is applied to the winding shaft 2, which tends to lower the winding shaft 2 further due to the weight of the blind. , the second driven carrier V rear 44 tries to rotate under this action, but at the beginning of the rotation of the second driven carrier 44, the diameter of the spring 42 is expanded via the protrusion 45 on the negative side. Since the second driven carrier 44 is rotated in the direction, the spring 42 is integrally fixed to the fixed ring 41 and the rotation of the second driven carrier 44 is restricted. Therefore, a self-locking operation is automatically performed by the reaction force of the second driven carrier 44 corresponding to the load of the blind, and the counterclockwise rotation of the winding shaft 2 is naturally locked.

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.

Further, since the first self-locking portion 5 described above is arranged symmetrically in the circumferential direction, similar locking and unlocking operations are performed even when the motor is reversed.

Note that since the locking and unlocking operations of the locking spring 42 are performed by the sliding action of the outer circumferential surface of the spring that expands and contracts, it is suitable that the linear cross section of the spring is rectangular so that the sliding resistance can be sufficiently large.

The above-mentioned second self-locking part 6 transmits the output from the manual winding boot (to be described later) to the winding shaft 2, and the winding shaft 2
It functions to lock the output from the side, and during automatic winding operation via the aforementioned motor 24, the rotation of the fifth carrier 48 that fixes the aforementioned fourth carrier 38 is locked and winding is performed. Rotation of the take-up shaft 2 is allowed, and conduction to the manual take-up pulley is cut off.

On the other hand, during manual winding operation, the lock is released to allow rotation of the fifth carrier 48, and the winding shaft 2 is rotated based on this.

This locking part 6 has fifth and sixth planetary gear reduction mechanisms 49 and 50 for manual winding located outside the first self-locking part 5.
The fixed ring 41 corresponds to the inner peripheral surface formed on the outer end side of the third internal gear 1P51, and the second drive carrier 4 has the same mechanism as the first self-locking part 5.
3 corresponds to the seventh driving carrier 52, the second driven carrier 44 corresponds to the seventh driven carrier 53, and the second planetary gear 35 corresponds to the seventh driving carrier 52 for manual use connected to a manual winding pulley to be described later. The sun gear 54 corresponds to this, and the 6th and 5th stages 50.49 correspond to the 3rd and 4th stage planetary gear reduction mechanisms 31.32, respectively, and have a similar locking action, so their explanation will be omitted. do. In the figure, 55 is a supporting member;
6 is a blind, 57 is a sixth carrier, and 58 is a spring of the second self-locking portion.

The above-mentioned manual winding section 7 is, for example, a manual winding pulley 5.
9 is rotatably disposed on the outer end of the support shaft 21 and is rotated from the outside, and a rope for rotating the pulley 59 is provided on the outer peripheral surface of the pulley 59. 60
, and is attached vertically below the lower surface of the member 10. Furthermore, a hollow shaft for transmission is protruded from the center of the inner end side of the pulley 59 and extends long on the support shaft 21, and a seventh sun gear for manual use is provided on the circumferential surface of the inner end of the hollow shaft. and meshes with the seventh drive carrier of the second self-locking portion 6 described above.

In the manual winding section 7 configured in this way, the output during manual operation via the pulley 59 unlocks the second self-locking section 6, and thereby the fourth self-locking section 7 integrated with the fifth carrier 48
The carrier 38 is rotated, and based on this rotation, the entire deceleration mechanism section 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 from the motor located on the opposite side, both carriers 38 and 48 are fixed by the second self-locking part 6.
The motor output is not transmitted to the manual winding section γ side.

The aforementioned blind positioning 111 section 8 is for positioning each set position of the winding setting position when the blind is wound up and stored, and the unfolding setting position when it is rewound and used for unfolding. The operation is performed by a combination of a planetary gear mechanism 61 for winding positioning that positions the winding shaft 2 in response to rotation m, a planetary gear mechanism 62 for deploying positioning, and limit switches 63 and 64 corresponding to these. Consisted of.

As shown in FIGS. 4 to 6, the planetary gear mechanism 61 for winding positioning described above has a fourth internal gear 65 that is integrally fitted into the outer end opening of the winding shaft 2. The large diameter gear of the pinion 66 having a different diameter gear meshes with the small diameter gear, and the 8th and 9th sun gears v67.
The ninth ring 1768 side is provided for positioning the deployment side.

The above-mentioned eighth sun gear 67 has six small diameter shafts protruding from the center of its outer end surface, and a sun gear is formed on the inner surface of the outer end portion of the small diameter Q'11169. Moreover, an eighth carrier 71 holding the shaft of a seventh planetary gear 70 that meshes with the sun gear is loosely fitted onto this small diameter shaft 69, and rotation of this eighth carrier 71 is regulated by a clutch mechanism to be described later. has been done. A fifth internal gear 72 corresponds to the seventh planetary gear 70, and this gear 72 has a small diameter gear shaft formed with a lean gear protruding from the center of its outer end surface, and an eighth gear shaft is provided on this gear shaft. The planetary gears 73 are arranged equally, and the ninth planetary gears are connected to the ninth planetary gears, and the shafts of the ninth planetary gears are respectively held by the ninth carriers 75 and revolve around the planetary gears. The sixth internal gear 76 corresponds to the above-mentioned eighth planetary gear 73, and the fin internal gear 77 independently corresponds to the ninth planetary gear 1774.

And these fifth to fifth internals v72.76
．． 77, a take-up side limit switch 3 is installed, and these gears are formed with the same diameter on the outer circumferential surface and with different rotation ratios, so that the rotation in the circumferential direction is There are engagement grooves 78 in the axial direction, respectively.
to be engraved. When the engagement grooves 78... of these wheels 772, 76, 77 align with the - straight line, the actuator 79 of the limit switch 63 engages and turns off, stopping the rotation of the motor 24 and winding. Fix the pick position.

The winding-side limit switch 63 is kept in the ON state when not operated, and is set to be OFF when the winding position is reached.

Next, when finely adjusting the winding position of the blind, use the fifth to fifth internal gears 72, 76, 7 described above.
This is accomplished by a clutch mechanism 80 that allows or restricts the rotation of the eighth carrier 71, and this clutch mechanism 80 is operated by engaging and disengaging a worm gear 81 and a gear carved on the surface of the eighth carrier 71. And, one A
- The inner end of the worm gear 81 is rotatably supported by a pivot pin 82 appropriately supported inside the member 10, and a rotating shaft 83 protruding from the outer end of the worm gear is attached to the member 1.
When the eighth carrier 71 is attached to the eighth carrier 71 by vertically operating the pivot pin 82 from the outside through the open window 84, the release operation is performed. A winding setting switch 85 is disposed at the upper position of the rotating shaft 83, and the motor 24 is driven for fine adjustment via this switch 85. Each of these switches is connected to the motor 24 via a single lead wire 28 that passes through the support shaft 21. Also, the rotation axis 8
3 is constantly biased by a spring 86 in the direction of meshing with the eighth carrier 71.

When adjusting the set position of the winding side limit switch 63 using the clutch mechanism 80 configured in this way, normally the worm gear r81 meshes with the eighth carrier 71 and the eighth
The rotation of the carrier 71 is restricted, which allows the fifth to
The winding-side limit switch 63 is in an operable state by allowing rotation of the fin internal gears 72, 76, and 77. When making fine adjustments from this state, first
is pushed upward to allow rotation of the eighth carrier 71,
In response to this, the winding setting switch 85 is turned on to drive the motor 24 and 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 motor 24 is stopped and the desired setting position can be adjusted immediately.

In this case, the worm gear 81 can be reset in the disengaged state, that is, the so-called let state in which the engagement grooves 78 are aligned, and the setting operation can be easily performed.

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 .

Components connected to the ninth sun gear 68 and thereafter are as follows:
The winding side limit switch 6 is arranged in exactly the same way as the constituent members after the eighth sun gear 67 described above.
3 is replaced by a deployment side limit switch 64, and the winding setting switch 85 is replaced by a deployment setting switch 87, and the deployment positioning operation and deployment positioning mechanism are based on similar structural members. is obtained, so 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 and the winding setting switch 85 and the unfolding side limit switch 64 and the unfolding setting switch 87 are installed in parallel between the changeover switch 88 and the motor 24 on each line of the forward and reverse directions of the motor 24. and is connected.

In the roll blind winding device configured in this way, the motor output is brought to a predetermined rotational speed via the first to fourth planetary gear reduction mechanisms 29 to 32 by the forward rotation or reverse rotation of the forward/reverse rotation motor 24. The rotational force is transmitted to the winding shaft 2, and the winding shaft 2 winds or unfolds the blind at a predetermined rotational speed, and when it reaches a predetermined set position, the positioning mechanism section 8 is activated. Then, the rotation of the motor 24 is stopped, the winding or unfolding position of the blind is automatically fixed, and the raising/lowering operation of the blind is completed.

When manual operation is required, by pulling the row 160 and rotating the pulley 59 in the forward or reverse direction, the winding shaft 2 interlocked with this can be rotated to fix the blind at a predetermined position as appropriate, and the winding or Use expansion.

For the winding shaft 2, if the winding width of the screen is long or the winding width is large, a reinforcing winding pipe may be fitted on the winding shaft as appropriate depending on the required strength. Fix it.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a longitudinal sectional front view of the main part showing a roll blind winding device. FIGS. 2 and 3 are enlarged vertical side views of essential parts showing the self-locking mechanism. Figure 4 shows the positioning mechanism of the device! 1′ Enlarged vertical front view of the main part. FIGS. 5 and 6 are enlarged vertical side views of the main parts thereof. 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 part 41...Fixed ring 42.58...Lock spring 43...Second drive carrier 44...Second driven carrier 45...Protrusion 46...Permissible space part Figure 2 Figure 3 Figure 4 Figure 5 Figure 0 Figure 6 0 Figure 7

Claims (1)

[Claims] 1. A screen winding device that controls the winding shaft in forward and reverse directions through a forward and reverse motor built into the winding shaft of a cylindrical body and a planetary gear reduction mechanism that reduces the output of this motor. A coiled locking spring is fitted into the fixed ring fitted and fixed to the winding shaft with the outer circumferential surface of the locking spring in sliding contact with the inner circumferential surface of the fixed ring. With,
Both ends of a locking spring are provided so as to protrude inwardly in the radial direction facing each other, and on the inner periphery of the locking spring there is a space between the outer surface of the shaft of the carrier of the planetary gear reduction mechanism and the inner peripheral surface of the spring. The shaft portion of the carrier is fitted with a slight gap formed between the carrier shaft portions, and the shaft portion of the carrier is divided into a front stage side and a rear stage side with a cross section shaped like a half moon in the axial direction, and the radial direction of these half moon shaft portions is Based on the fact that a self-locking mechanism is provided between the opposing surfaces, in which both ends of the locking spring are interposed with an allowable space that allows initial rotation of both ends of the locking spring in the circumferential direction.
- A screen winding device with a grooved bottom to conduct the output from the 9 side and lock the output from the winding shaft side.