JPH0455199Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an improvement of a door device and is used for garage doors and gates.

[Prior art] As a conventional door device, for example,
There is something disclosed in the publication No.

That is, the publication describes that the rear end of an extending member extending rearward from the door body is pivoted to a fixed part, the extending member and the fixed part are connected by a connecting rod, and the extending member is connected to the fixed part via the extending member. A device is disclosed in which a biasing member for biasing a connecting rod in a direction to flip up the door body is disposed at a fixed portion.

[Problems to be solved by the invention] However, in the conventional door device described above, the connecting rod swings greatly when the door device is opened and closed.
For safety and maintenance reasons, when covering connecting rods, etc., it is necessary to use a large cover that does not hit the connecting rods, which causes the problem that the cover hits the installation location and the door device cannot be installed in a narrow space. It was hot.

The present invention was made to solve the above problems, and aims to provide a versatile door device that can be installed even in narrow spaces.

[Means for Solving the Problems] In order to solve the above problems, the present invention extends an arm whose base end is fixed to the door body behind the door body,
The tip of the arm is pivotally supported on a support column, so that the door body and the arm can be flipped up as a unit, and the support column is disposed at a position facing both ends of the door body, It is formed in an inverted L shape by a vertical part and a horizontal part extending rearward continuously, and a pinion centered at a pivot point of the tip is fixed to the tip of the arm, and the pinion is connected to the pinion. The door device is characterized in that the supporting column is provided with a rack that meshes with the rack, and a biasing member that biases the rack in a direction to flip up the door body via the pinion and the arm. be.

[Function] In the present invention, when the door body is closed, the biasing member biases the rack in the direction of flipping up the door body via the pinion and the arm, but the self-weight of the door body is greater than the biasing force. Since it is large, the door body cannot be lifted up. When opening the door body, the door body is lifted in cooperation with the biasing member. As a result, the rack moves in a linear direction, and the movement of the rack causes the pinion to rotate around the pivot point, and the rotation of the pinion allows the door body to be flipped up via the arm.

[Example] A comparative example of the present invention will be described with reference to the drawings. 1 to 5 show comparative examples of the present invention.

<Configuration of comparative example> As shown in Figure 4, gateposts 1 are installed on both sides of the entrance.
0 and 10 are erected, and the door body 20 is arranged so as to be located between the gateposts 10 and 10 when closed.

As can be seen in FIGS. 3 to 5, support posts 11 and 11, which are fixed parts, are installed at the rear positions on both sides of the door body 20.
As can be seen in FIG. 4, the support pillar 11 is formed at a height slightly lower than the upper end of the gate post 10.

As can be seen in FIGS. 3 and 5, the door body 20
The base 21a of the arm 21 is fixed to both sides of the upper end, and the tip 21b of the arm 21 extends approximately horizontally to the tip 11a of the support column 11.
1 is pivotally supported on the support column 11 via a connecting member 22, and the connecting member 22 is provided with a pinion 30 centered at the pivot point.
A rack 40 that engages with the door body 20 and a gas spring 50 that is a biasing member that biases the rack 40 in the direction of flipping up the door body 20 via the pinion 30 and the arm 21 are attached along the support column 11 that is a fixed part. It is provided.

As can be seen from FIGS. 1 and 2, the connecting member 22 is formed by integrally forming a protruding member 23 that is fitted into the distal end portion 21b of the cylindrical arm 21 and a base member 24. The protruding member 23 of the connecting member 22 is fixed to the tip end 21b of the arm 21 with a mounting screw (not shown) so that it cannot be removed.

The support column 11 has a support column main body 12 formed in a cylindrical shape.
A protective cover 13 is provided at the upper end of the holder. The upper part 13a of the protective cover 13 is designed to prevent hands from touching the pinion 30, rack 40, and gas spring 50 disposed inside the support column body 12 and the protective cover 13, and to prevent rain from splashing on the pinion 30, rack 40, and gas spring 50. It is shaped like a case. Further, a positioning flange 14 is provided around the outer periphery of the central portion 13b of the protective cover 13, and the positioning flange 14 of the protective cover 13 is connected to the upper end surface 12a of the support column body 12.
The supporting column main body 12 is formed into a lid shape to prevent rain and the like from entering. Further, a guide portion 15 extends downward from the center portion 13b of the protective cover 13.

A pinion 3 is located in the center inside the protective cover 13.
0 is rotatably provided, and one end of the pivot shaft 25 to which the pinion 30 is fixed protrudes outside the protective cover 13 and is fixed to the base member 24 of the connecting member 22.

A rack 40 that meshes with the pinion 30 is disposed inside the protective cover 13 and the support column main body 12 connected to the protective cover 13, and the rack 40 has guides fixed to the front upper and lower positions of the protective cover 13, respectively. The pins 16 form a guided elongated hole 41 that is guided in the vertical direction. That is, the rack 40 is connected to the guide portion 15 and the guide pin 1.
6, it is provided so as to be movable in the vertical direction without swinging in the Y direction in FIG. 1 and without swinging in the X direction in FIG.

A gas spring 50 is provided inside the support column body 12 and below the rack 40 to constantly bias the rack 40 upward.
The operating rod 51 is pivotally supported by the pivot pin 42 of the rack 40 at the upper position, and the mounting member 52 is pivotally supported by the pivot pin 18 of the fixing member 17 of the support column body 12 at the lower position.

<Operation of Comparative Example> Next, the operation of the comparative example configured as described above will be described.

As shown by the solid line in FIG. 3 and the solid line in FIG. are doing. However, since the urging force of the gas spring 50 is set to be slightly small due to the weight of the door body 20, the door body 20 maintains a fully closed state and does not spring up. In addition, in FIG. 1, the upper end of the guided slot 41 of the rack 40 is connected to the protective cover 13.
The pinion 30 does not rotate counterclockwise as it comes into contact with the guide pin 16 of It does not move downward from the predetermined fully closed position (solid line in Figure 4).

When opening the door body 20, lift the door body 20. At this time as well, the biasing force of the gas spring 50 is acting in the direction of lifting the door body 20.
It is sufficient to lift the door body 20 with a slight force.

When the door body 20 is lifted, the arm 21 in the horizontal position in FIG. 1 rotates clockwise, and the pinion 30 also rotates clockwise via the connecting member 22. Thereby, the rack 40 is guided by the guide portion 15 of the protective cover 13 and the guide pin 16, and moves upward without swinging. Also,
The operating rod 51 of the gas spring 50 also moves as the pivot pin 42 of the rack 40 moves.

Furthermore, when the door body 20 is opened, the arm 21 rotates clockwise in FIG.
0 also rotates clockwise. As a result, easy 4
0 moves upward and guides the elongated hole 4 of the rack 40.
1 comes into contact with the guide pin 16 of the protective cover 13 and stops. At this time, the arm 21 is in a vertical position (the state shown by the imaginary line in FIG. 1), and the door body 20 is in a fully open state. Even at this time, the gas spring 50 urges the rack 40 upward. However, the lower end of the guided elongated hole 41 of the rack 40 is in contact with the guide pin 16 of the protective cover 13, and the rack 40 cannot move upward. As a result, even if you release your hand from the door body 20, the pinion 30 cannot rotate counterclockwise or clockwise in FIG. maintain the fully open state.

To close the door body 20 again, place your hand on a part of the door body 20 and rotate the door body 20 counterclockwise in FIG. 3. As a result, the arm 21 also rotates counterclockwise, and the pinion 30 also rotates counterclockwise. When the pinion 30 rotates counterclockwise, the rack 40 is guided by the guide portion 15 and guide pin 16 of the protective cover 13 and descends without swinging. The door body 20 comes into contact with the guide pin 16 and stops, and the door body 20 maintains the fully closed position.

Since the opening/closing drive transmission means of the door device is composed of the pinion 30 and the rack 40, the movements of the pinion 30 and the rack 40 are reduced, and therefore,
The protective cover 13 becomes smaller, and the door device can be made smaller.

In the comparative example, the pivot point of the arm 21 of the door body 20 was set at a key point on the protective cover 13 of the support column 11, but it goes without saying that it may be set on the support column body 12.

Next, an embodiment of the present invention will be described with reference to FIGS. 6 and 7.

The configuration of the embodiment differs from the comparative example in the shape of the support column 11c, the attachment state of the rack 40c and gas spring 50c disposed on the support column 11c, and the attachment state of the protective cover 13c.

That is, as shown in FIGS. 6 and 7,
The support column 11c is disposed at a position facing both end surfaces of the door body 20c, and includes a vertical portion 12c and a horizontal portion 12d extending rearward following the vertical portion 12c. That is, the support column 11c is formed in an inverted L-shape as a whole.

In addition, the rack 40c and the gas spring 50
The rack 40c is provided inside the horizontal portion 12d of the support column 11c, that is, the rack 40c is movable in the horizontal direction, and the gas spring 50c biases the rack 40c rearward.

Further, the protective cover 13c is provided at the rear end of the horizontal portion 12d of the support column 11c, and the protective cover 13c is
The guide portion 15c of the protective cover 13c is horizontally formed forward, and the guide pin 16c of the protective cover 13c is
They are provided at predetermined positions before and after 3c. That is, the guide portion 15 and the guide pin 16 are connected to the rack 4.
0 in the X direction and Z direction in FIG. 6 without swinging.

Since the support column 11c is provided facing both end surfaces of the door body 20c, the support column 11c can also serve as a gatepost.

[Effects of the invention] As explained above, the invention consists of a pinion and a rack for transmitting the opening/closing drive of the door body, reduces its movement, makes the protective cover 13 smaller, and therefore makes the door device smaller. This makes it possible to create a versatile door device that can be installed even in narrow spaces.

[Brief explanation of drawings]

Figures 1 to 5 show comparative examples of the present invention, and Figure 1 is a sectional view of the main parts of the door device seen from the side, with the upper part of the support column, which is the fixed part, cut away;
Figure 2 is a cross-sectional view of Figure 1, Figure 3 is a view taken in the direction of the arrow in Figure 4, Figure 4 is a front view of the door device as seen from the front, and Figure 5 is an overall perspective view of the door device. It is a diagram.
6 and 7 show a second embodiment of the present invention, in which FIG. 6 is an overall perspective view of the door device, and FIG. 7 is a view taken in the direction of the arrows in FIG. 6. 10...Gatepost, 11, 11c...Support pillar, 12
...Support column body, 13, 13c...Protection cover,
15, 15c... Guide portion, 16, 16c... Guide pin, 20, 20c... Door body, 21... Arm, 22... Connection portion, 25... Pivot shaft, 30...
...Pinion, 40,40c...Rack, 50,5
0c...Gas spring.

Claims (1)

[Claim for Utility Model Registration] An arm whose base end is fixed to the door body is extended to the rear of the door body, and its tip is pivoted to a support column so that the door body and arm can be flipped up as one unit. None, the support pillar is arranged at a position facing both ends of the door body, and is formed in an inverted L shape by a vertical part and a horizontal part extending rearward continuously from the vertical part, A pinion centered on the pivot point of the tip is fixed to the tip of the arm, and a rack that engages with the pinion and a rack that moves in the direction of flipping up the door body via the pinion and the arm. A door device characterized in that a biasing member for biasing the support column is provided on the support column.