JP2000160969A - Shutter driving device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve assemblage and reduce cost for a tubular pipe by dispensing with the tubular pipe requiring machining accuracy so as to dispense with pressing a motor pipe into the tubular pipe. SOLUTION: This shutter driving device comprises a winding drum 3 rotatably supported in a shutter case 100 to wind and rewind a shutter; a motor 1 interposingly inserted in the winding drum 3 and locked to the shutter case 100; reduction mechanism 2 fixed to the motor 1 in the winding drum 3 to reduce the speed of rotation of the motor 1; and transmission mechanism 4 for transmitting the speed-reduced rotation of the motor 1 to the winding drum 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shutter driving device for driving a winding member such as a blind, a roll screen, and a shutter to open and close.

[0002]

2. Description of the Related Art A conventional tubular driving device for driving a winding member such as an electric blind to open and close (Japanese Utility Model Laid-Open No. 6-3039).
8) is to insert and fix the electric motor M and the speed reducer G in the tubular pipe T as shown in FIG.
The electric motor M is press-fitted into the tubular pipe T, and the speed reducer G is fixed to the tubular pipe T with a screw or the like.

[0003]

In the above-described conventional tubular driving device, the electric motor M and the speed reducer G are inserted and fixed in the tubular pipe T. Since the cost is increased by that much and the electric motor M is press-fitted into the tubular pipe T, there is a problem that processing accuracy is required and assemblability is poor.

The present inventor has proposed that the rotation of the motor is reduced by a reduction mechanism fixed to a motor fixed in a shutter case, and the reduced rotation of the motor is transmitted to the winding drum by a transmission mechanism. The present invention focuses on the technical idea of the present invention that the shutter is wound and rewinded by a winding drum rotatably supported in the shutter case, and as a result of further research and development, the electric motor and the speed reducer By eliminating the need for a tubular pipe that requires processing accuracy to insert and fix, the cost for the tubular pipe is not required, and the press-fitting of the electric motor into the tubular pipe is unnecessary. Accuracy is not required,
The present invention has been achieved which achieves the object of good assemblability.

[0005]

A shutter driving device according to the present invention (first invention according to claim 1) is rotatably supported in a shutter case, and takes up and rewinds a shutter. A drum, a motor interposed in the winding drum and locked to the shutter case, fixed to the motor in the winding drum,
A deceleration mechanism for decelerating the rotation of the motor, and an outer peripheral engaging portion interposed in the winding drum and mechanically engaging the winding drum at an outer peripheral portion, and the decelerating mechanism of A center engaging portion mechanically engaging the output shaft is formed,
A transmission mechanism for transmitting the reduced rotation of the motor to the winding drum.

According to a second aspect of the present invention, in the shutter driving device of the first aspect, the housing of the speed reduction mechanism is fixed to the housing of the motor by a fixing member. .

According to a third aspect of the present invention, in the shutter driving device according to the first or second aspect, the housing of the motor is connected to the shutter case by a locking member. It is fixed.

According to a fourth aspect of the present invention, in the shutter driving device according to any one of the first to third aspects, the motor and the speed reduction mechanism are coaxial within the winding drum. It is one that is arranged in a typical manner.

According to a fifth aspect of the present invention, there is provided a shutter driving device according to any one of the first to fourth aspects, wherein the transmission mechanism has an outer peripheral portion formed inside the winding drum. The outer peripheral engaging portion is formed by irregularities formed on the outer peripheral portion and a part of the inner peripheral surface of the winding drum, and the central portion is engaged with the output shaft of the reduction mechanism. And a coupling formed with the center engaging portion to be engaged with the portion.

According to a sixth aspect of the present invention, in the shutter driving device according to any one of the third to fifth aspects, one end of the winding drum is connected to the motor by the locking. The first end of the winding drum is slidably supported by a first support member interposed between the first and second members.
A second shaft inserted into the shutter case is inserted.
Is slidably supported by the supporting member.

According to a seventh aspect of the present invention, in the shutter driving device according to any one of the first to sixth aspects, the output shaft of the speed reduction mechanism is connected to the center of the transmission mechanism. It is loosely fitted to the engaging portion.

[0012]

According to the first aspect of the present invention, there is provided a shutter driving device having the above structure, wherein the rotation of the motor is performed by the speed reduction mechanism fixed to the motor interposed in the winding drum and locked to the shutter case. Through the outer peripheral engaging portion that mechanically engages the winding drum from the center engaging portion that mechanically engages the output shaft of the speed reduction mechanism with the reduced rotation of the motor. By transmitting to the winding drum by a transmission mechanism, the winding and rewinding of the shutter is performed by the winding drum rotatably supported in the shutter case.
An effect of reliably transmitting the rotation of the motor decelerated by the transmission mechanism to the winding drum is achieved, and a tubular pipe that requires processing precision for inserting and fixing the conventional electric motor and reduction gear is required. By making it unnecessary, the cost for the tubular pipe is made unnecessary, and since the press-fitting of the electric motor into the tubular pipe is not required, the processing accuracy is not required and the effect that the assembling property is good is exhibited. .

[0013] In the shutter drive device of the second invention having the above-mentioned structure, since the housing of the speed reduction mechanism is fixed to the motor housing by a fixing member in the first invention, processing accuracy is required. In addition, there is an effect that the assembling is easy.

[0014] In the shutter drive device of the third invention having the above structure, in any one of the first invention and the second invention, the motor housing is fixed to the shutter case by a locking member. There is an effect that the motor is securely fixed.

[0015] In the shutter driving apparatus according to a fourth aspect of the present invention, the motor and the speed reduction mechanism are coaxially arranged in the winding drum in any one of the first aspect to the third aspect. Therefore, there is an effect that the winding drum can be rotated for winding and rewinding the shutter.

A shutter driving device according to a fifth aspect of the present invention, which is configured as described above, engages with the engagement portion of the output shaft of the speed reduction mechanism constituting the transmission mechanism. The winding drum is rotated from the center engaging portion of the coupling via the outer peripheral engaging portion formed by the outer peripheral portion of the coupling and the irregularities formed on a part of the inner peripheral surface of the winding drum. Driving
An effect of realizing rotation transmission of the winding drum for winding and rewinding the shutter is provided by one member of the coupling.

According to a sixth aspect of the present invention, in the shutter driving apparatus according to any one of the third to fifth aspects, both ends of the winding drum are interposed between the motor and the locking member. Since the inserted first support member and the shaft locked to the shutter case are slidably supported by the inserted second support member,
An effect is provided that enables stable rotation of the winding drum for winding and rewinding the shutter.

According to a seventh aspect of the invention, there is provided a shutter driving device according to any one of the first to sixth aspects, wherein an output shaft of the speed reduction mechanism is loosely fitted to the center engaging portion of the transmission mechanism. Since the concentricity of the output shaft of the speed reduction mechanism with the transmission mechanism and the winding drum is not required, it is possible to reduce the processing accuracy and to facilitate the assembly. Play.

[0019]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described.
This will be described with reference to the drawings.

(First Embodiment) As shown in FIGS. 1 to 4, the shutter driving device of the first embodiment is rotatably supported in a shutter case 100, and takes up and rewinds a shutter. Take-up drum 3
A motor 1 interposed in the winding drum 3 and locked to the shutter case 100; a reduction mechanism 2 fixed to the motor 1 in the winding drum 3 to reduce the rotation of the motor; A transmission mechanism 4 for a disc-shaped coupling 40 having a center engaging portion 43 and an outer circumferential engaging portion 41 for transmitting the decelerated rotation of the motor to the winding drum 3.

The motor 1 has a stator core 12 on which a coil 11 is wound, a rotor 13 rotatably inserted into a rotor insertion hole of the stator core 12, and a penetratingly secured to the rotor 13. A rotor shaft 14 rotatably supported by bearings disposed at both ends of a housing as a case.

The housing 10 of the motor 1 is slidably supported at one end of the winding drum by a bracket 15 as a locking member via a disk-shaped receiving member 32 as a first supporting member. It is fixed to the shutter case 100.

The housing 20 of the speed reduction mechanism 2 is shown in FIG.
And a screw 25 as a fixing member as shown in FIG.
A large-diameter first housing 201 fixed to the housing 10 of the motor 1 by the first housing 2
01 and a second housing 202 having a small diameter and a long length which is fixed by screws 26.

The speed reduction mechanism 2 is constituted by a planetary gear speed reduction mechanism in which a plurality of planetary gear groups are connected in three stages 21, 22, and 23 in the present embodiment, and the first stage is the rotor of the motor 1. A plurality of resin-made planetary gears meshing with a sun gear formed at one end of the shaft 14, and first to third planetary gears at the outer peripheral edge of these planetary gears.
An internal gear that meshes with each of the planetary gears of the first stage and a first first planetary gear for pivotally supporting the first planetary gear to transmit the revolution output thereof to the second stage planetary gear. And drives the drive shaft 24 at a reduction ratio determined by the gear ratio of the planetary gears at each stage.

The motor 1 and the speed reduction mechanism 2 are coaxially arranged in the winding drum 3, as is apparent from FIGS.

As shown in FIGS. 3 and 4, the transmission mechanism 4 has an arc portion 42 inserted into the outer peripheral portion of the inner peripheral surface of the winding drum 3 and two opposing portions of the winding drum 3. A rectangular concave portion 41 is formed as an outer peripheral engaging portion with which the rectangular projecting portion 39 inward in the radial direction engages. A rectangular opening 43 as a side engaging portion is constituted by a disk-shaped coupling 40 formed at the center, and is mechanically connected to the drive shaft 24 of the speed reduction mechanism 2.

As shown in FIGS. 1 to 3, the winding drum 3 is constituted by a hollow cylindrical pipe member 30, and a drum cap 31 is attached to one end of the pipe member 30. It is slidably supported by the receiving part 32 as a first support member inserted between the bracket 1 and the bracket as the locking member.

As shown in FIG. 1, two other ends of the winding drum 3 are arranged side by side at a predetermined distance and are fixed to the inner peripheral wall of the winding drum 3 as a second support member. Disc members 33 and 34 are provided, and shafts 3 are rotatably provided in holes formed in central portions of the two disc members.
5 is inserted, and the shaft 35 is fixed to the shutter case 100 via the bracket 36. A coil spring 37 is inserted between the two disk members 33 and 34 so as to surround the shaft 35.

In the shutter driving device according to the first embodiment having the above-described structure, the rotation of the motor 1 fixed in the shutter case 100 is reduced by the reduction mechanism fixed to the motor 1, and the rotation is reduced. The rotation of the motor is transmitted to the winding drum 3 by the coupling 40 as the transmission mechanism 4.

The rotation of the take-up drum 3 transmitted by the coupling 40 causes the take-up drum 3 rotatably supported in the shutter case 100 to take up and rewind the shutter. is there.

In the shutter driving device of the first embodiment having the above-described operation, the rotation of the motor 1 is reduced by the reduction mechanism, and the rotation of the motor 1 is reduced by the coupling 40. 3 and the shutter can be wound and rewound by the winding drum 3.

Further, in the shutter driving device according to the first embodiment, the rotation of the motor 1 fixed in the shutter case 100 is decelerated by the speed reduction mechanism fixed to the motor 1, and the one-piece cup Since the power is transmitted to the winding drum 3 by the ring 40, the transmission mechanism can be made simple and inexpensive, and the conventional tubular pipe which requires the processing accuracy of inserting and fixing the electric motor and the speed reducer can be eliminated. This has the effect of eliminating the cost for the tubular pipe.

Further, the shutter drive device of the first embodiment does not require press-fitting the conventional electric motor into the tubular pipe and inserting and fixing the speed reducer, so that machining accuracy is not required and This has the effect that the assembling property is good.

That is, in the shutter driving device according to the first embodiment, the housing 20 of the speed reduction mechanism 2 is fixed to the housing 10 of the motor 1 by the screw 25 as the fixing member. Is not required, and the effect that assembly is easy is achieved.

Further, in the shutter driving device of the first embodiment, the housing 10 of the motor 1 is fixed to the shutter case 100 by the bracket 15 as the locking member, so that the motor 1 can be securely mounted. This has the effect of realizing the fixation.

Further, in the shutter driving device according to the first embodiment, the motor 1 and the speed reduction mechanism 2 are coaxially arranged in the winding drum 3, so that the shutter is wound and rewound. The effect of enabling the rotation of the winding drum 3 for performing the above is achieved.

Further, in the shutter drive device of the first embodiment, the drive shaft 24 having a rectangular cross section of the speed reduction mechanism 2 constituting the transmission mechanism 4 is mechanically connected to the rectangular opening 43 so as to be interposed therebetween. The take-up drum 3 is rotationally driven by the coupling 40 via a rectangular protrusion 39 protruding from the inner peripheral surface of the take-up drum 3 which is inserted and engaged with the rectangular recess 41 at the outer peripheral portion. This has the effect of realizing the rotation of the winding drum for winding and rewinding the shutter, and the transmission mechanism is constituted by the one-piece coupling 40. This has the effect of being simple and cheap.

That is, the coupling 40 constituting the transmission mechanism 4 is mechanically connected with the drive shaft 24 having a rectangular cross section of the speed reduction mechanism 2 by being inserted into and engaged with the rectangular opening 43. The winding drum 3 is configured to be rotationally driven by inserting and mechanically connecting a rectangular projection 39 projecting from the inner peripheral surface of the winding drum 3 to the rectangular recess 41 of the winding drum 3. In order to transmit the rotational torque through the two engaging portions, the coupling 40
Even if the concentricity between the motor 1 and the drive shaft 24 and the winding drum 3 cannot be ensured, the rotational force of the motor 1 is transmitted from the speed reduction mechanism 2 and the drive shaft 24 to the drive shaft 24 via the coupling 40. The power can be reliably transmitted to the winding drum 3.

Further, in the shutter driving device according to the first embodiment, both ends of the winding drum 3 are provided between the motor 1 and the bracket 15, and the receiving member 32 as the first supporting member is inserted between the motor 1 and the bracket 15. The shutter case 100
Since the shaft 35 locked to the shutter is slidably supported by the disc members 33 and 34 as the second support members interposed therebetween, the shutter for winding and rewinding the shutter is provided. This has the effect of enabling stable rotation of the winding drum 3.

In the shutter driving device of the first embodiment, the housing 20 of the speed reduction mechanism 2 includes a large-diameter first housing 201 fixed to the housing 10 of the motor 1 by a screw 25; Housing 201
The sun gear, a plurality of resin-made planetary gears, and each of the planetary gears are formed in the housing 20 because the sun gear, the plurality of resin-made planetary gears, This has the effect of facilitating the assembly of the internal gear, the first carrier, and the like, which are commonly meshed with each other.

(Second Embodiment) In the shutter drive device of the second embodiment, the housing 20 of the speed reduction mechanism 2 in the first embodiment is replaced with a screw 2 as the fixing member.
5, the first housing 21 of the speed reduction mechanism 2 is integrally formed with the first housing 21 as shown in FIG. Claw pieces 27 and 28 as members
The housing 10 of the motor 1 and the second
The difference is that it is changed so that it is locked to and fixed to the housing 22.

In the shutter drive device of the second embodiment having the above-described structure, the housing 10 and the second housing 22 of the motor 1 are connected to the housing 10 and the second housing 22 by the claw pieces 27 and 28 formed integrally with the first housing 21. Since the locking and fixing are performed, there is an effect that the locking and fixing can be performed with one touch by the claw pieces 27 and 28.

The above-described embodiments have been described by way of example only, and the present invention is not limited to these embodiments. Those skilled in the art will recognize from the claims, the detailed description of the invention, and the drawings. Modifications and additions are possible without departing from the technical idea of the present invention.

In the above-described first embodiment, as an example, the drive shaft 24 having a rectangular cross section of the speed reduction mechanism 2 is inserted and engaged with the rectangular opening 43 of the coupling 40, and The example in which the rectangular projection 39 protruding from the inner peripheral surface is interposed and engaged with the rectangular concave portion 41 on the outer peripheral portion has been described. However, the present invention is not limited to these shapes. It is possible to adopt a combining means.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view illustrating an entire shutter driving device according to a first embodiment of the present invention.

FIG. 2 is a cross-sectional view illustrating a main part of the shutter driving device according to the first embodiment.

FIG. 3 is a perspective view illustrating a main part of the shutter driving device according to the first embodiment.

FIG. 4 is a perspective view showing a coupling according to the first embodiment.

FIG. 5 is a cross-sectional view illustrating a main part of a shutter driving device according to a second embodiment of the present invention.

FIG. 6 is a sectional view showing a conventional device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Motor 2 Reduction mechanism 3 Winding drum 4 Transmission mechanism 40 Coupling 41 Outer periphery engaging part 43 Center engaging part 100 Shutter case

Continued on the front page (72) Inventor Mitsuyoshi Masuda 2-1-1 Asahi-cho, Kariya-shi, Aichi Aisin Seiki Co., Ltd. (72) Inventor Masayoshi Saeki 70, Hayakawa, Takaoka-shi, Toyama Pref. 72) Inventor Yoichi Urai 70 Hayakawa, Takaoka City, Toyama Prefecture F term in Sankyo Aluminum Industry Co., Ltd. (reference) 2E042 AA01 AA06 BA01 CA01 CB08

Claims (7)

[Claims] A winding drum that is rotatably supported in a shutter case and performs winding and rewinding of a shutter; a motor interposed in the winding drum and locked to the shutter case; A speed reduction mechanism fixed to the motor in the winding drum and configured to reduce the rotation of the motor; and an outer peripheral engaging portion interposed in the winding drum and mechanically engaging the outer peripheral portion with the winding drum. And a transmission mechanism for transmitting a rotation of the decelerated motor to the winding drum, wherein a center engagement portion that mechanically engages an output shaft of the speed reduction mechanism is formed at a central portion. A shutter driving device. 2. The shutter driving device according to claim 1, wherein a housing of the speed reduction mechanism is fixed to a housing of the motor by a fixing member. 3. The shutter driving device according to claim 1, wherein a housing of the motor is fixed to the shutter case by a locking member. 4. The shutter driving device according to claim 1, wherein the motor and the speed reduction mechanism are coaxially arranged in the winding drum. 5. The winding mechanism according to claim 1, wherein an outer peripheral portion of the transmission mechanism is inserted into an inner peripheral surface of the winding drum, and the outer peripheral portion and an inner peripheral surface of the winding drum are arranged. The outer peripheral engaging portion is formed by irregularities formed on a part of the shaft, and the central engaging portion is formed at a central portion to engage with the engaging portion of the output shaft of the speed reduction mechanism. A shutter driving device. 6. The winding drum according to claim 3, wherein one end of the winding drum is slidable by a first support member inserted between the motor and the locking member. A shutter driving device, wherein the other end of the take-up drum is supported and slidably supported by a second support member through which a shaft engaged with the shutter case is inserted. 7. The shutter driving device according to claim 1, wherein an output shaft of the speed reduction mechanism is loosely fitted to the center engaging portion of the transmission mechanism.