JP2004360412A - Door support structure of trap gate door - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a door support structure of a trap gate door for improving durability by reinforcing an arm installing member with a simple constitution, without increasing the number of part items and cost. <P>SOLUTION: This trap gate door opens and closes a door body by vertically rotating the door body around a journaling part (a rotary shaft 6) of the arm installing member 7, by fitting and fixing the respective other ends of a pipe-shaped upper arm 3 and a lower arm 4 (a metallic arm) having one ends respectively installed on the left and right of the door body, to the casting (or resin) arm installing member 7 respectively rotatably journaled to a pair of respective left-right columns 5. The other ends of the respective arms 3 and 4 are fitted and fixed by including the journaling part in the arm installing member 7. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
TECHNICAL FIELD The present invention relates to a support structure of a door body which is supported up and down by a support column via an arm and an arm mounting member in a flip-up type gate.
[0002]
[Prior art]
A flip-up gate installed at the entrance of the garage, etc., has a pipe-shaped metal arm with one end attached to the left and right sides of the door body, and the other end pivotally supported by a pair of left and right columns. The door body is rotated up and down around the pivot of the arm mounting member by fitting and fixing to the arm mounting member thus opened and closed.
[0003]
By the way, in such a flip-up type gate, a casting made of aluminum die-casting, zinc die-casting, or the like is generally used for the arm mounting member because a complicated shape is easily formed and the forming accuracy is high.
[0004]
However, since the casting is fragile and has low impact resistance compared to steel, etc., when the impact accompanying opening and closing of the door propagates to the arm mounting member through the arm and the shaft support, the impact causes the arm mounting member to crack or break. There is a problem that the durability is reduced due to the occurrence of.
[0005]
Therefore, as shown in FIGS. 10 and 11, a proposal has been made to reinforce a cast arm mounting member (bracket) 107 with a steel plate 122 (see Patent Document 1).
[0006]
That is, FIG. 10 is an exploded perspective view showing a mounting structure of the arm mounting member to the column, FIG. 11 is a rear view of the arm mounting member formed by mounting a steel plate, and in FIG. An arm mounting member 107 is rotatably supported on a support 105 by a prismatic rotating shaft 106.
[0007]
Here, the arm mounting member 107 has a shaft support portion 107a and rectangular column-shaped insertion portions (arm mounting portions) 107b and 107c integrally projecting from the shaft support portion 107a in a V-shape. One end of a square pipe-shaped arm (support arm) 103 (only one is shown) is fitted to 107b and 107c and fixed with screws. The arm mounting member 107 has a steel plate 122 superimposed on the back surface thereof. (See FIG. 11), and is reinforced by the steel plate 122 to prevent cracks and breaks due to impact.
[0008]
[Patent Document 1]
JP 2002-339677 A
[Problems to be solved by the invention]
However, the configuration according to the above proposal requires the steel plate 122 that constitutes another part, so that the number of parts increases and the number of steps involved in mounting the steel plate 122 increases, resulting in a problem that the cost is increased.
[0010]
The present invention has been made in view of the above problems, and an object thereof is to enhance the durability by reinforcing the arm mounting member with a simple configuration without increasing the number of parts or increasing the cost. It is an object of the present invention to provide a door support structure of a flip-up type gate that can perform the above.
[0011]
[Means for Solving the Problems]
In order to achieve the above object, the invention according to claim 1 is characterized in that one end of a pipe-shaped metal arm having one end attached to each of the left and right sides of the door body is rotatably pivoted to a pair of right and left columns. In a flip-up type gate that is fitted and fixed to a supported cast or resin arm mounting member, the door body is turned up and down around a pivot portion of the arm mounting member to open and close it. The other end of each arm is fitted and fixed to the arm mounting member including its pivotal support.
[0012]
According to a second aspect of the present invention, in the first aspect of the invention, each of the arms is constituted by two upper and lower arms and a lower arm, and the arm mounting member is formed into a V-shape in a side view to form a bifurcated shape. And a shaft support is provided on one of the insertion portions.
[0013]
Therefore, according to the first or second aspect of the present invention, it is necessary to newly add a part to the arm attachment member made of a casting or resin because the portion including the pivot portion is reinforced by the existing metal arm. In addition, the arm mounting member can be reinforced with a simple configuration to improve the durability without increasing the number of parts or increasing the cost.
[0014]
According to a third aspect of the present invention, in the first or second aspect, a steel plate is inserted into the arm mounting member.
[0015]
Therefore, according to the third aspect of the present invention, since the arm mounting member is reinforced by the steel plate in addition to the metal arm, the durability is further enhanced.
[0016]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
[0017]
<Embodiment 1>
FIG. 1 is a side view of a flip-up gate according to the present invention, and FIG. 2 is an enlarged detailed view of a portion A in FIG.
[0018]
As shown in FIG. 1, the flip-up type gate 1 according to the present embodiment includes a pair of upper and lower arms 3, 4 (FIG. 1 is supported by a pair of left and right columns 5 (only one is shown in FIG. 1) via a pair of left and right pivots via respective ones only.
[0019]
Here, the door body 2 is formed into a rectangular frame shape by welding aluminum pipes, and a pair of upper and lower upper arms 3 is provided on the back surfaces of left and right vertical frames 2a (only one is shown in FIG. 1). And one end of the lower arm 4 (front end: the left side in FIG. 1 is the front). The upper arm 3 and the lower arm 4 are each formed of an aluminum square pipe having a rectangular cross section, and one end (front end) of the upper arm 3 is attached at a right angle to the upper rear surface of each vertical frame 2 a of the door body 2. The upper arm 3 extends rearward from the door body 2 to the column 5. One end (front end) of the lower arm 4 is obliquely attached to the middle part of the back of each vertical frame 2 a of the door body 2, and the lower arm 4 has an angle θ between the door body 2 and the upper arm 3. , And extends obliquely upward toward the support 5 to the rear.
[0020]
The other end (rear end) of each of the upper arm 3 and the lower arm 4 on each side is rotatably pivoted to the outer side of each support 5 by a prism-shaped rotation shaft 6 as shown in detail in FIG. It is fitted and fixed to a supported arm mounting member 7 (only one is shown). As shown in FIG. 1, shock absorbers 8 (only one is shown) for absorbing and relaxing the impact when the door 2 is lowered and closed are respectively provided at the lower rear portions of the left and right vertical frames 2 a of the door 2. Installed.
[0021]
By the way, the pair of right and left columns 5 is formed of a metal square pipe having a rectangular cross section, and a lower portion thereof is buried in the ground and vertically erected. A rotating mechanism (not shown) that is driven by electric power or manually is built in each of the columns 5, and the rotating shaft 6 that is rotationally driven by the rotating mechanism moves from the outer surface of each of the columns 5. The arm mounting member 7 protrudes horizontally toward the side, and is inserted and fixed to an end thereof.
[0022]
Here, details of the configuration of each arm mounting member 7 will be described with reference to FIGS. 3 is a front view of the arm mounting member, FIG. 4 is a view in the direction of arrow B in FIG. 3, and FIG. 5 is a view in the direction of arrow C in FIG.
[0023]
In the present embodiment, the arm mounting member 7 is a casting formed into a V-shape in a side view by aluminum die casting, and is integrally formed with bifurcated prism-shaped insertion portions 7a and 7b. The insertion portions 7a and 7b are integrally connected by a connection portion 7c. The two insertion portions 7a, 7b extend in a V-shape toward the front (to the left in FIG. 3) at the same angle θ as the angle θ formed by the upper arm 3 and the lower arm 4. At the base end near the connecting portion 7c of the long insertion portion 7a (above), a square hole-shaped insertion hole 9 for inserting and fitting the rotary shaft 6 is provided in the lateral direction (perpendicular to the sheet of FIG. 3). Direction). Further, as shown in FIGS. 3 and 4, two screw holes 10 are vertically provided at the tip of the insertion portion 7a.
[0024]
Then, as shown in FIG. 3, predetermined positions on both sides of the rear end of the upper arm 3 (positions that match the insertion holes 9 when the upper arm 3 is inserted into the insertion portion 7a of the arm mounting member 7). Is provided with a rectangular hole-shaped insertion hole 11 extending in the lateral direction. As shown in FIG. 4, a predetermined position (only the upper surface is shown in FIG. Each of the two circular holes 12 is vertically penetrated at a position corresponding to the screw hole 10 when 3 is inserted into the insertion portion 7a of the arm mounting member 7).
[0025]
As shown in FIGS. 3 and 5, a circular hole 13 is provided in the middle portion in the length direction of the other (lower) insertion portion 7 b of the arm mounting member 7, and a circular hole 13 is provided on both sides thereof. Has a screw hole 14 also penetrating in the lateral direction. Then, at a predetermined position on the rear end side of the lower arm 4 (a position matching the circular hole 13 and the screw hole 14 when the lower arm 4 is inserted into the insertion portion 7b of the arm mounting member 7). Has one circular hole 15 and two circular holes 16 each penetrating in the lateral direction.
[0026]
Thus, the ends (rear ends) of the upper and lower arms 3 and 4 extending rearward from the left and right sides of the door body 2 are inserted into the insertion portions 7a and 7b of the arm mounting member 7, respectively. Fixed.
[0027]
That is, the rear end of the upper arm 3 is inserted and fitted into the insertion portion 7a above the arm mounting member 7 from the direction of the arrow in FIGS. The insertion hole 11 and the circular hole 12 formed in the portion match the insertion hole 9 and the screw hole 10 formed in the insertion portion 7a of the arm mounting member 7, respectively.
[0028]
Also, the rear end of the lower arm 4 is inserted and fitted into the insertion portion 7b below the arm mounting member 7 from the direction of the arrow in FIGS. The circular holes 15 and 16 formed in the portions match the circular holes 13 and the screw holes 14 formed in the insertion portion 7b of the arm mounting member 7, respectively.
[0029]
In the above state, a bolt 17 inserted into each of the circular holes 12 formed on the upper and lower surfaces of the rear end portion of the upper arm 3 is screwed into a screw hole 10 formed in the insertion portion 7a of the arm mounting member 7. 2, the rear end of the upper arm 3 is fitted and fixed to the insertion portion 7a of the arm attachment member 7 as shown in FIG. 2, but in this embodiment, the insertion of the arm attachment member 7 is performed. The rear end of the upper arm 3 is fitted and fixed to the entire portion including the shaft support portion (portion supported by the rotating shaft 6) of the portion 7a.
[0030]
As shown in FIG. 2, the rear end of the lower arm 4 inserted into the insertion portion 7b of the arm mounting member 7 is fastened together with the lock member 19 by two screws 18 so that the arm mounting member 7 is The fitting is fixed to the insertion portion 7b. That is, screws 18 inserted into the circular holes 16 formed at both ends of the lock member 19 and the rear end side of the lower arm 4 are screwed into the screw holes 14 formed in the insertion portion 7b of the arm mounting member 7. By tightening, the rear end of the lower arm 4 is fitted and fixed to the insertion portion 7b of the arm mounting member 7, and the lock member 19 is attached to the rear end side of the lower arm 4.
[0031]
As described above, when the rear ends of the upper arm 3 and the lower arm 4 are respectively fitted and fixed to the insertion portions 7a and 7b of the arm mounting member 7, as shown in FIG. The rotary shafts 6 projecting horizontally from the outer portions of the columns 5 are inserted into insertion holes 9 and 11 formed in the insertion portion 7 a of the mounting member 7 and the rear end of the upper arm 3. By fixing a disc-shaped cover (washer) 20 to the end face with a screw 21, each of the left and right arm mounting members 7 is rotatably supported by each of the columns 5, and the door 2 is It is supported on left and right supports 5 via an upper arm 3 and a lower arm 4 whose rear ends are fitted and fixed to an arm mounting member 7 so as to be rotatable up and down around a rotation shaft 6.
[0032]
Next, the operation of the flip-up gate 1 having the above configuration will be described.
In the flip-up type gate 1 according to the present embodiment, the door 2 is in the descending closed state when the door 2 is held in the vertical state as shown by the solid line in FIG. When the two need to be opened, a rotating mechanism (not shown) built in the left and right columns 5 is driven electrically or manually.
[0033]
Then, the rotating shaft 6 rotates clockwise in FIG. 1, and the left and right arm mounting members 7 and the left and right upper and lower arms 3 and 4 and the door body 2 are integrally rotated around the rotating shaft 6 in the same direction. The door body 2 is flipped upward along an arc trajectory as shown in the drawing, and maintains an upwardly opened state (horizontal state) as shown by a chain line in FIG. Therefore, in this state, it is possible for the vehicle to enter and exit, and when the vehicle enters and exits, the rotating shaft 6 is driven to rotate in the opposite direction (counterclockwise in FIG. 1) to the upwardly opened state (horizontal). 1), the door body 2 pivots downward about the rotary shaft 6 to return to the lower closed state shown by the solid line in FIG. The impact at the time of closing the door body 2 is absorbed and reduced by the shock absorber.
[0034]
As described above, in the present embodiment, the cast arm mounting member 7 that is fragile and has low impact resistance as compared with steel or the like has a portion including the shaft support portion that is formed of the existing metal (aluminum) upper arm 3. Therefore, the arm mounting member 7 can be reinforced with a simple configuration and the durability thereof can be improved without adding a new component, increasing the number of components and increasing the cost.
[0035]
In the present embodiment, the arm mounting member 7 is made of a metal casting (aluminum casting), but may be made of an integrally molded product such as hard plastic instead.
[0036]
<Embodiment 2>
Next, a second embodiment of the present invention will be described with reference to FIGS. 6 is a front view of the arm mounting member, FIG. 7 is a cross-sectional view in the direction of arrow D in FIG. 6, FIG. 8 is a cross-sectional view in the direction of arrow E in FIG. 6, and FIG. 6 to 8, the same elements as those shown in FIGS. 3 to 5 are denoted by the same reference numerals, and description thereof will be omitted below.
[0037]
The present embodiment is characterized in that a steel plate 22 is inserted into the arm mounting member 7, and the other configuration is the same as that of the first embodiment.
[0038]
That is, in the present embodiment, as shown in FIGS. 6 to 8, the steel plate 22 shown in FIG. 9 is inserted into the back surface (the surface facing the column 5) of the arm mounting member 7, and this insert is This is performed by simultaneously casting the steel plate 22 at the time of casting the arm mounting member 7.
[0039]
Here, the steel plate 22 is formed in a V-shape along the shape of the arm mounting member 7, and at positions corresponding to the insertion hole 9, the circular hole 13, and the screw hole 14 formed in the arm mounting member, A rectangular insertion hole 23 and circular holes 24 and 25 are respectively formed.
[0040]
According to the present embodiment, the arm mounting member 7 is reinforced not only by the metal (aluminum) arm 3 but also by the steel plate 22, so that the effect of further increasing the durability is obtained. Can be
[0041]
【The invention's effect】
As is apparent from the above description, according to the present invention, one end of each of the pipe-shaped metal arms having one end attached to the left and right sides of the door body is rotatably pivoted to a pair of right and left columns. In a flip-up type gate that is fitted and fixed to a supported cast or resin arm mounting member, the door body is turned up and down around a pivot portion of the arm mounting member to open and close it. Since the other end of each arm is fitted and fixed to the arm mounting member including its pivot portion, the arm mounting member is reinforced with a simple configuration to improve the durability without increasing the number of parts or increasing the cost. The effect that can be achieved is obtained.
[Brief description of the drawings]
FIG. 1 is a side view of a flip-up gate according to the present invention.
FIG. 2 is an enlarged detail view of a portion A in FIG. 1;
FIG. 3 is a front view of the arm mounting member according to the first embodiment of the present invention.
FIG. 4 is a view in the direction of arrow B in FIG. 3;
FIG. 5 is a view in the direction of arrow C in FIG. 3;
FIG. 6 is a front view of an arm mounting member according to Embodiment 2 of the present invention.
7 is a cutaway view in the direction of arrow D in FIG. 6;
8 is a cutaway view in the direction of arrow E in FIG. 6;
FIG. 9 is a front view of a steel plate.
FIG. 10 is an exploded perspective view showing a conventional example of a mounting structure of an arm mounting member to a support.
FIG. 11 is a rear view of a conventional arm mounting member to which a steel plate is mounted.
[Explanation of symbols]
1 flip-up gate 2 door 3 upper arm (metallic arm)
4 Lower arm (metal arm)
5 Support 6 Rotating shaft 7 Arm mounting members 7a, 7b Insertion section 8 Shore absorber 9 Insertion hole 10 Screw hole 11 Insertion hole 12, 13 Circular hole 14 Screw hole 15, 16 Circular hole 17 Bolt 18 Screw 19 Lock member 20 Cover 21 Screw 22 Steel plate 23 Insertion hole 24, 25 Circular hole

Claims (3)

The other ends of the pipe-shaped metal arms each having one end attached to the left and right sides of the door body are fitted and fixed to a cast or resin arm attachment member rotatably supported by a pair of left and right columns, respectively. By doing so, in a flip-up gate that opens and closes the door body by rotating the door body up and down around the pivot of the arm mounting member,
The other end of each of the arms is fitted and fixed to the arm mounting member including a pivot portion thereof, and the door support structure of the flip-up type gate. Each of the arms is constituted by two upper and lower arms and an upper arm and a lower arm, and the arm mounting member is formed into a V-shape in a side view to form a bifurcated insertion portion. 2. A door support structure for a flip-up gate according to claim 1, further comprising a pivot portion. 3. The door support structure for a flip-up gate according to claim 1, wherein a steel plate is inserted into the arm mounting member.

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