JP3069446B2 - Garage door opening and closing mechanism - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an opening / closing mechanism for a garage door, which opens a garage by lifting a door body and closes the door body by rotating the door downward. And a technique for simplifying the structure of the transmission system and facilitating manufacture.

[0002]

2. Description of the Related Art Conventionally, a door body is attached to a distal end of an arm 1 and a pin 3 integrated with a base end of the arm 1 is pivotally attached to a support column 4 to transmit driving force to the pin 3. In the garage door opening and closing mechanism that opens and closes the door body by opening and closing, as shown in FIGS. 9 and 10, the driving force from the electric motor 9 drives and rotates the pin 3 via bevel gears a and b. The arm 1 is swung and rotated, and the door body 2 is opened and closed and rotated.

[0003]

However, in order to use the bevel gears a and b in the transmission system, the meshing accuracy of the bevel gears a and b is required, and the holding members of the bevel gears a and b are required to be engaged. There is a problem that the rigidity of the material, the processing accuracy thereof, and the assembly accuracy are required, the configuration is complicated, and the production and assembly are complicated. FIG. 11 shows another conventional example in which the pin 3 is rotated via the arm 5b, which is difficult to be driven electrically.

The present invention has been made in view of such a problem, and an object of the present invention is to avoid the use of bevel gears and to avoid the need for manufacturing accuracy of bevel gears and their holding members. Another object of the present invention is to provide a garage door opening / closing mechanism that simplifies the structure of a transmission system and facilitates manufacture.

[0005]

According to the present invention, a door 2 is attached to a distal end of an arm 1 and a pin 3 integrated with a base end of the arm 1 is pivotally attached to a support 4 so as to be rotatable. A garage door opening / closing mechanism for transmitting a driving force to a gear 5 integrated with the door 3 and opening and closing the door body 2 to rotate the door body 2 therein. Provided, lifting body 6
A sprocket 10 driven and rotated by an electric motor 9 is engaged with the driven pins 8...
Is formed on the arm-shaped gear 5a extending from the pin 3,
The arm-shaped gear 5a is meshed with the driven pins 8.

[0006]

A group of driven pins 8,... Attached to the elevating body 6 at appropriate intervals form a rack gear, and the driven pins 8,... Mesh with the sprocket 10 on the electric motor 9 side as a rack gear. The arm-shaped gear 5 extended from the pin 3 on the door body 2 side with the driven pin 8 as a rack gear
meshes with a. Thus, the power transmitted from the electric motor 9 is transmitted to the driven pins 8 serving as rack gears and the driven pins 8.
.. To the arm-shaped gear 5a. In this way, the use of bevel gears is avoided. By avoiding an increase in manufacturing accuracy and assembling accuracy when using bevel gears, the structure is simplified, manufacturing is facilitated, and costs are reduced.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIGS. 1 and 2, a garage door has a first arm 1a as an arm 1 attached to the upper ends of left and right columns 4 pivoted on the upper ends of the columns 4 with pins 3. As shown in FIG. It is freely pivoted. A link 11 is pivotally supported by a pin 12 at the upper end of the column 4. 1st arm 1
A second arm 1b substantially parallel to a is pivotally supported at the tip of the link 11 by a pin. The door 2 is pivotally supported by pins 13 at the distal ends of the first arm 1a and the second arm 1b. Then, by rotating the pin 3 in the forward direction, the first arm 1a and the second arm 1b are lifted and rotated to open the door body 2, and the pin 3 is rotated.
Are turned in the opposite direction, so that the first arm 1a and the second arm
The arm 1b is pivoted down so that the door 2 can be pivotally closed.

As shown in FIGS. 4 and 5, an aluminum extruded product elevating body 6 is accommodated in a column 4 made of an extruded aluminum product so as to be vertically movable by a guide 7 described later. ing. The lifting body 6 is a first member 14
And the second member 15 are connected by screws 16. A concave groove 17 is formed in the first member 14 and the second member 15, in which a part of a pair of L-shaped main plates 18 is inserted and fixed with rivets 19. The L-shaped main plate 18 is connected to the connecting plate 20 via the driven pin 8, so that the driven pin 8
Are arranged at appropriate intervals in the concave groove 17.

FIGS. 6 to 8 show a mounting structure of the electric motor 9. The mounting plate 21 is formed in a substantially L-shape.
In the motor mounting opening 22 of the mounting plate 21
Is attached to the support 4 at the attachment hole 23, and then
The electric motor 9 is inserted from the motor mounting opening 22 and is mounted on the mounting plate 21 with bolts 24.
A sprocket 10 is mounted on an output shaft 25 of the electric motor 9, and the sprocket 10 meshes with a driven pin 8... Mounted on the elevating body 6 as a rack gear. Thus, the sprocket 1 is rotated by the forward rotation of the electric motor 9.
0 and the driven pins 8... Are engaged with each other so that the lift 6 can be driven upward.

As shown in FIG. 4, the pin 3 is formed in a hexagonal shaft shape, and a substantially fan-shaped arm-like gear 5a such as a partial gear as the gear 5 is inserted through the pin 3 and fixed. Such an arm-shaped gear 5a meshes with a driven pin 8 attached to the second member 15 of the elevating body 6. Thus, the arm-shaped gear 5a can be turned upward by raising the elevating body 6, the pin 3 can be turned upward, and the door 2 can be opened and rotated. Thus, the arm-shaped gear 5a is rotated downward, the pin 3 is rotated downward, and the door body 2 can be closed and rotated.

In this manner, the positioned sprocket 10 of the electric motor 9 and the positioned arm-shaped gear 5a mesh with the driven pins 8 in directions substantially orthogonal to each other with respect to the elevating body 6. In such a meshing, the positioning of the elevating body 6 is performed in reverse. On the upper and lower ends of the elevating body 6, guide rollers 26 as the guides 7 are rotatably mounted on an axis substantially parallel to the axis X of the pin 3, and are attached to the upper and lower guide rollers. 26 is in contact with the inner wall surface of the column 4 as the guide 7, so that the positioning in the direction perpendicular to the axis X is sufficient and the up-and-down body 6 can be moved up and down satisfactorily. Further, at the upper and lower ends of the elevating body 6, guide rollers 27 as the guides 7 are rotatably held and mounted on an axis substantially parallel to the axis Y of the sprocket 10. The contact of the support 27 with the inner wall surface of the column 4 as the guide 7 ensures sufficient positioning in the direction substantially perpendicular to the axis Y, and allows the up-and-down body 6 to move up and down satisfactorily. The design of such a guide 7 can be variously changed.

As described above, the elevating body 6 is provided inside the support column 4 so as to be able to move up and down via the guide 7, and the driven pin 8 is attached to the elevating body 6.
Are attached at appropriate intervals, and a sprocket 10 driven and rotated by an electric motor 9 is meshed with the driven pins 8..., And the gear 5 integrated with the pins 3 extends from the pins 3. The arm-shaped gear 5a is formed on the gear 5a, and is meshed with the driven pins 8.
A driven pin 8 attached to the elevating body 6 at appropriate intervals.
The group serves as a rack gear, and the driven pin 8... Meshes with the sprocket 10 on the electric motor 9 side as a rack gear, and extends from the pin 3 on the door 2 side as the driven pin 8. Outgoing arm-shaped gear 5a
It is engaged with. Thus, the power transmitted from the electric motor 9 is reliably transmitted to the driven pins 8 which are rack gears and from the driven pins 8 to the arm-shaped gear 5a. Then, the use of the bevel gear is avoided, and the production accuracy and the assembling accuracy when the bevel gear is used are avoided.

As shown in FIGS. 1 and 4, a gas spring 28 is interposed between the fixed portion 29 on the support column 4 side and the upper end of the elevating body 6. The gas spring 28 is in a compressed state in a closed state in which the door body 2 is lowered,
When the electric motor 9 is rotated forward by the input of the operation signal to the antenna 30 to drive the door body 2 upward, the opening drive can be performed with a small output of the electric motor 9 by the spring force of the gas spring 28, and The door 2 is prevented from violently colliding with the ground at the end of the closing rotation of the door 2.

[0014]

According to the present invention, as described above, a lifting body is provided inside a support column so as to be able to move up and down via a guide, and driven pins are attached to the lifting body at appropriate intervals, and are driven and rotated by an electric motor. The sprocket is meshed with the driven pin, and the gear integrated with the pin is formed into an arm-shaped gear extending from the pin. Since the arm-shaped gear is meshed with the driven pin, the sprocket is appropriately spaced from the elevating body. A group of driven pins that are mounted with a gap between them serves as a rack gear, and such a driven pin is meshed with a sprocket on the electric motor side as a rack gear, and the driven pin is used as a rack gear on an arm-shaped gear that extends from a pin on the door body side. Mesh, but
While reliably transmitting the power transmitted from the electric motor to the driven pin serving as the rack gear and from the driven pin to the arm-shaped gear, the use of bevel gears can be avoided, and the manufacturing accuracy and assembly accuracy when using bevel gears is increased. Can be avoided, the configuration can be simplified, the production can be easily performed, and the cost can be reduced.

[Brief description of the drawings]

FIG. 1 is a partially cut-away schematic side sectional view of a closed state according to an embodiment of the present invention.

FIG. 2 is a partial rear view of the same.

FIG. 3 is a partial plan sectional view of the same.

4 (a) is a schematic side view showing the transmission system of the above. FIG.
(B) is a schematic plan view.

FIG. 5 is a partial plan sectional view of the same.

FIG. 6 shows an attached state of the electric motor according to the first embodiment, and (a)
Is a side view, and (b) is a plan view.

FIG. 7 is a rear view showing an attached state of the electric motor.

FIG. 8 shows an attached state of the electric motor according to the first embodiment, and (a)
Is a side view, (b) is a plan view, and (c) is a rear view.

FIG. 9 is a partial front view of a conventional example.

FIG. 10 is a partial front view of a conventional example.

FIG. 11 is a partially omitted front view of a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Arm 2 Door body 3 Pin 4 Prop 5 Gear 6 Elevating body 7 Guide 8 Driven pin 9 Electric motor 10 Sprocket

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Katsuyuki Okumura 1048 Kadoma, Kadoma, Osaka Prefecture Matsushita Electric Works, Ltd. Inventor Kenji Noda 1048 Kazuma Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Works, Ltd. (58) Field surveyed (Int.Cl. ⁷ , DB name) E06B 11/02 E05D 15/04 E05D 15/40-15/46 E05F 15/00-15/20

Claims (1)

(57) [Claims] 1. A door is attached to a tip of an arm, a pin integrated with a base end of the arm is pivotally attached to a support column, and a driving force is transmitted to a gear integrated with the pin. An opening / closing mechanism for a garage door that opens and closes and rotates a door body, wherein an elevating body is provided inside a column so as to be able to move up and down via a guide, and driven pins are attached to the elevating body at appropriate intervals, and an electric motor is provided. The driven sprocket is meshed with the driven pin, and the gear integrated with the pin is formed as an arm-shaped gear extending from the pin, and the arm-shaped gear is meshed with the driven pin. Characteristic garage door opening and closing mechanism.