JPH10131648A - Expansion gate door - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make an expansion gate door smoothly expandable to open/close even on the inclined ground in a vertically balanced form. SOLUTION: Links 2 connected in a pantograph type are disposed in two vertical stages of longitudinal sash bars 1 in an expansion gate door. The upper connecting parts of the upper stage links 2 and the lower connecting parts of the lower stage links 2 are rotatably and slidably journalled to the longitudinal sash bars 1 by supporting shafts 5, 6. The lower connecting parts of the upper stage links 2 and the upper connecting parts of the lower stage links 2 are rotatably journalled to both ends of connecting links by supporting shafts 5, 6, and the center parts of the connecting links are journalled by supporting shaft so as to be formed rotatably. The gate door can thereby be expanded easily in an inclined state.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a pantograph-type link, which is engaged with a number of vertical rails, so that a gate provided with the vertical rails can be freely opened and closed in the horizontal direction, and can be installed on a slope. The present invention relates to a telescopic gate that can be freely opened and closed.

[0002]

2. Description of the Related Art FIG.
As shown in FIG. 2, the links connected to the pantograph type are arranged vertically in two stages on the vertical rail of the gate, and the upper connecting portions of the links are respectively supported on the vertical rails, and both ends of the swinging rods are connected together. The lower connecting portion of each link is slidably supported on a supporting rod, and the other end of the supporting rod is freely inserted into a guide groove of a fixture having a horizontal guide groove fixed to a vertical rail. Japanese Patent Publication No. 61-53509 discloses a telescopic gate in which a support rod is formed so as to be swingable and a link connected to a pantograph type is formed to be telescopic.

[0003] Further, as shown in FIG. 13, links connected in a pantograph type are arranged vertically in two stages on a vertical bar of a gate, and an upper connecting portion of each link is pivotally supported on the vertical bar, and a lower connecting portion of each link is connected. The part is pivotally supported at one end, that is, the upper end, on the other end, that is, the lower end of the lever, which is slidably and loosely fitted to the vertical rail, so that the link can swing. A telescopic gate is disclosed in Japanese Patent Publication No. 61-53510.

[0004]

In any of the telescopic gates described in the preceding paragraph, the link is completely separated into an upper stage and a lower stage to take an independent form, so that the operation is not linked. There is a problem that the upper and lower links tend to operate individually, and as a result, the upper and lower links may be in the form of a well-balanced gate and may not be able to open and close accurately and smoothly.

The present invention has been made in view of the above-mentioned problems, and the invention according to claims 1 and 2 is a telescopic gate, in which a link connected to a pantograph type is connected to the upper and lower ends of a vertical bar of the gate. Arrange the stages, link the upper and lower stages of the link, link the expansion and contraction operation, operate the gate vertically up and down,
The main object of each is to provide a telescopic gate which can be opened and closed accurately and smoothly, and which has a simple link mechanism which can be smoothly opened and closed even on a slope in a balanced form.

According to the third and fourth aspects of the present invention, in addition to the objects of the first and second aspects of the present invention, for example, by specifying an operating mode of a connecting link connecting two upper and lower pantograph-type links, An object of the present invention is to provide a telescopic gate capable of opening and closing and expanding and contracting the gate extremely smoothly by adding a sliding operation to the swinging operation.

[0007]

In order to achieve the above-mentioned object, according to the first aspect of the present invention, a link 2 connected to a pantograph type is provided in an up and down two-stage manner in a vertical bar 1 which is erected as a telescopic gate. Then, the upper link 2 and the lower link 2 are connected via a connecting link 7, and the upper connecting portion 3 of the upper link 2 and the lower connecting portion 4 of the lower link 2 are respectively connected to the vertical rail 1. The lower link 4 of the upper link 2 and the upper link 3 of the lower link 2 are rotatably supported at both ends of the connection link 7, respectively. The main structure of the telescopic gate is such that the center of the connecting link 7 is pivotally supported on the vertical rail 1 so as to be rotatable.

The invention according to claim 2 is a vertical rail 1 in which a link 2 connected to a pantograph type is erected as a telescopic gate.
, The upper link 2 and the lower link 2 are connected via a connecting link 7, and the upper connecting portion 3 of the upper link 2 and the lower connecting portion 4 of the lower link 2 are connected to each other. The lower link 4 of the upper link 2 and the upper link 3 of the lower link 2 are rotatably supported on the vertical rail 1 respectively.
The telescopic gates are pivotally and slidably supported at both ends of the connecting link 7 respectively, and the center of the connecting link 7 is rotatably supported with respect to the vertical rail 1. It has a configuration.

According to a third aspect of the present invention, in addition to the configuration of the first aspect, a guide groove for guiding the support shaft 8 at a central portion of a connecting link 7 connecting the upper link 2 and the lower link 2. 9 is a telescopic gate in which the support shaft 8 is loosely fitted in the guide groove 9 and the connecting link 7 is slidably and rotatably supported on the vertical bar 1 by the support shaft 8.

According to a fourth aspect of the present invention, in addition to the structure of the second aspect, a connecting shaft 7 and an upper and lower link 2 are connected to a connecting link 7 connecting the upper link 2 and the lower link 2.
A guide groove 9 for guiding the supporting shafts 5 and 6 of the connecting portions 3 and 4 is provided, and the supporting shaft 8 and the connecting portions 3 and 4 are provided in the guide grooves.
This is a telescopic gate door in which the support shafts 5 and 6 are loosely fitted, and the connecting link 7 is slidably and rotatably supported by the vertical bar 1 by the support shaft 8.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, an embodiment of a telescopic gate according to the present invention will be specifically described with reference to the drawings.

In the telescopic gate of the present invention, as shown in FIG. 1, on both the left and right sides, a vertical bar 1 formed of a thick profile is opposed to the front and back, and a thin profile is interposed therebetween. As shown in FIG. 2, several sets of the formed vertical rails 1 are provided opposite to each other, and these vertical rails 1 themselves are provided with concave grooves 10 on their opposing surfaces. Then, links 2 connected to a pantograph type, which are erected between the left and right vertical rails 1, are disposed at two locations, an upper row and a lower row, between the front and back of the vertical rail 1.
A support shaft 5 for supporting the upper connecting portion 3 is formed so as to be slidable by loosely fitting into the concave groove 10 of the vertical rail 1, and a supporting shaft 6 for supporting the lower connecting portion 4 of the lower link 2 is also provided. Similarly, it is loosely fitted in the groove 10 of the vertical rail 1 so as to be slidable. The upper and lower links 2 are rotatably formed by connecting shafts 5 and 6 at connecting portions 3 and 4.

In order to form the support shafts 5 and 6 so as to be slidable by loosely fitting into the concave grooves 10 of the vertical rail 1, for example, the support shafts 5 and 6 are mounted on a slider 11 which slides in the concave grooves 10. In order to rotatably support the support shafts 5 and 6 in the concave groove 10, the slider 11 may be fixed in the concave groove 10.

Further, the support shaft 6 of the lower connecting portion 4 of the upper link 2 and the support shaft 5 of the upper connecting portion 3 of the lower link 2
Are rotatably supported by support shafts 5 and 6 at both ends of a connecting link 7 for connecting the lower connecting portion 4 and the upper connecting portion 3. The connecting link 7 is rotatably fixed to the concave groove 10 of the vertical rail 1 at the center by a support shaft 8.

When the support shaft 8 for supporting the connecting link 7 is installed, a slider 11 is used to fix the support shaft 8 to the concave groove 10 of the vertical rail 1.
The slider 11 may be fixed so as not to slide in the concave groove 10.

Both the upper link 2 and the lower link 2 in the gate are formed so as to be able to intersect with the adjacent link 2 at the center of the link 2 by means of a pin 12 and to intersect in an X-shape. And lower link 2
Are arranged at both ends of the left and right ends, and at both ends of the connecting link 7 for connecting the upper link 2 and the lower link 2 in the same manner as in the above-described intermediate portion. The vertical bar 1 is hinged to the gate 13, a locking device 14 for locking the gate 13 is attached to the vertical bar 1 at the other end, and a caster 15 is attached to the lower end to be slidable. ing.

In the telescopic gate of the embodiment described above, opening and closing in a flat place is the same as that of a normal type gate. When the gate is extended, when viewed from the front, the vertical bar 1 and the connecting link 7 overlap. It looks like one vertical bar. However, when the gate is installed on a slope and extended, as shown in FIG. 3, the vertical rail 1 at the tip extends while moving downward, so that the links 2 connected to the upper and lower pantograph types are entirely along the slope. Inclined and with it the connecting link 7
Also swings right and left around the support shaft 8 to assist the downward movement of the vertical rail 1 and the extension of the gate.

The mode of operation of the telescopic gate is shown in FIGS. 4 to 7. FIG. 4 shows a state where the telescopic gate is installed on a flat ground and the telescopic gate is folded, and the gate is folded horizontally. . FIG. 5 shows a state where the telescopic gate is extended on a flat ground, but the gate is extended horizontally. Next, FIG. 6 shows a state in which a telescopic gate is installed on a sloped ground and the telescopic gate is folded. It is inclined and stretched.

In this gate, as shown in FIG. 10, a connecting link 7 for connecting the upper link 2 and the lower link 2 is provided at the upper end of the connecting link 7 with the support shaft 6 of the lower connecting portion 4 of the upper link 2. At the lower end of the connecting link 7, the upper and lower link 2 are rotatably supported by the supporting shaft 5 of the upper connecting portion 3 of the lower link 2, respectively. A guide groove 9 for guiding a support shaft 8 for mounting the connecting link 7 to the vertical rail 1 is provided, and the support shaft 8 is loosely fitted into the guide groove 9 and fixed to the vertical rail 1, and the connecting link 7 is turned. It can also be movably and slidably formed.

Another aspect of the telescopic gate will now be described. As can be understood from the operation diagrams shown in FIGS. 8 and 9, the link 2 connected in a pantograph type between the right and left vertical bars 1 of the telescopic gate is in the upper stage. And the lower connecting part 4 of the upper link 2 and the lower connecting part 4 of the lower link 2 are respectively provided with support shafts 5 and 6.
Thereby, it is rotatably fixed to the inner surface of the vertical rail 1.

The connecting link 7 for connecting the upper link 2 and the lower link 2 includes a support shaft 6 of the lower connecting portion 4 of the upper link 2 and an upper connecting portion 3 of the lower link 2 on both ends. Guide grooves 9 for guiding the support shafts 5 are provided, and the guide shafts 9 of the connecting portions 3 and 4 are provided in the guide grooves 9.
6, the upper link 2 and the lower link 2 are both formed to be rotatable and slidable, and the connecting link 7 is rotatable by the support shaft 8 on the vertical bar 1 at the center. It is fixed to. The operation of the telescopic gate operates in the same manner as in the previous example.

In the case of FIG. 8 showing the mode of operation, when the telescopic gate is installed on a flat ground and the gate is extended, it extends horizontally in a horizontal state as a whole. However, as shown in FIG. 9, when the telescopic gate is installed on a sloped land and the gate is extended, the gate is also extended in an inclined state as a whole in accordance with the sloped ground.

Further, the upper link 2 and the lower link 2
As shown in FIG. 11, both guides for loosely fitting the support shaft 6 of the lower connection portion 4 of the upper link 2 and the support shaft 5 of the upper connection portion 3 of the lower link 2 as shown in FIG. The grooves 9 are connected to each other to form a single groove, and the support shafts 5 and 6 are loosely fitted to both ends of the guide groove 9, and the support shaft 8 for supporting the connecting link 7 between the support shafts 5 and 6. Is loosely fitted and the connecting link 7 is fixed to the vertical rail 1 by the supporting shaft 8, so that the connecting link 7 is formed to be slidable and rotatable, that is, swingable, and the supporting shafts 5, 6 are also slidable. By being movably formed, the door can be freely expanded and contracted even when the gate is installed on a slope. The guide grooves 9 are not formed in one groove, but are formed in three guide grooves 9 so that the respective support shafts 5, 6, 8 can be loosely fitted. It is also possible to play the 6, 8 loosely.

As described above, the telescopic gate according to the present invention is provided with the telescopic gate installed on an inclined ground by connecting the upper link 2 and the lower link 2 by the connecting link 7 in any case. As a result, the connecting link 7 swings right and left, and as a result, both the upper link 2 and the lower link 2 are easily tilted, and the telescopic gate is deformed along the sloped ground.

[0025]

The telescopic gate according to the present invention has the above-described structure, and the following effects can be obtained by this structure.

According to the first aspect of the present invention, the links connected to the pantograph type are arranged at two upper and lower stages of the vertical bar in the telescopic gate, and the upper link and the lower link are connected via the connecting link. The upper link of the upper link and the lower link of the lower link are pivotally and slidably supported on the vertical rail, and the lower link of the upper link and the upper link of the lower link are connected to each other. The connecting link is rotatably supported at both ends, and the connecting link is rotatably supported on the vertical rail.

According to the second aspect of the present invention, the links connected to the pantograph type are arranged at two upper and lower stages of the vertical rail in the telescopic gate, and the upper link and the lower link are connected via the connecting link. The upper connecting portion of the link and the lower connecting portion of the lower link are rotatably supported on the vertical rail, and the lower connecting portion of the upper link and the upper connecting portion of the lower link are provided at both ends of the connecting link. By pivotally and slidably pivotally supporting the connecting link to the vertical rail so as to be freely rotatable, the following effects can be obtained by the configurations of the first and second aspects of the present invention.

That is, since the links connected in the pantograph type are arranged in two stages in the upper and lower directions and the upper and lower links are connected by the connecting links, the expansion and contraction operations are linked up and down, and the gates are operated up and down in synchronism to balance. When installed on a slope, the opening / closing operation can be performed accurately and smoothly, and the extension operation can be achieved by a simple link mechanism.

According to a third aspect of the present invention, in addition to the effects of the first aspect of the present invention, a guide groove for guiding a support shaft is provided at a central portion of the connecting link, and the connecting link slides and rotates with respect to the vertical rail. Being freely supported by a support shaft.

According to a fourth aspect of the present invention, in addition to the effects of the second aspect, a connecting shaft and an upper stage
5. The invention according to claim 3, wherein a guide groove for guiding the support shaft of the connecting portion in the lower link is provided, and the connecting link is supported by the support shaft so as to be slidable and rotatable with respect to the vertical rail. Has the following effects.

That is, since the connecting link for connecting the pantograph type links arranged in the upper and lower stages is rotatably and slidably supported with respect to the vertical bar, the pressure applied to the vertical bar in the expansion and contraction operation of the gate is reduced. Regardless of the present invention, the connecting link can be easily swung, the opening and closing operation of the gate can be performed extremely smoothly even when the connecting link is installed on a slope, and the simple link mechanism can be utilized for the gate. The effect of is very remarkable.

[Brief description of the drawings]

FIG. 1 is a front view showing an extended state of a telescopic gate on a flat ground.

FIG. 2 is a sectional view taken along line AA in FIG.

FIG. 3 is a front view showing an extended state of a telescopic gate on a slope.

FIG. 4 is an operation diagram showing a state in which the telescopic gate is folded on a flat ground.

FIG. 5 is an operation view showing an extended state of the telescopic gate on a flat ground of the above.

FIG. 6 is an operation diagram showing a state in which the telescopic gate is folded on a slope.

FIG. 7 is an operation view showing an extended state of the telescopic gate on a sloped land of the same 7;

FIG. 8 is an operation diagram showing an extended state of a telescopic gate on a flat ground according to another embodiment.

FIG. 9 is an operation diagram showing an extended state of the telescopic gate on the sloping land.

FIG. 10 is an operation diagram showing a modification of the connection link.

FIG. 11 is an operation diagram showing another modification of the connection link.

FIG. 12 is a perspective view of a main part of a known telescopic gate.

FIG. 13 is a perspective view of a main part of another known telescopic gate.

[Explanation of symbols] 1 vertical bar 2 link (upper and lower) 3 upper connecting part 4 lower connecting part 5, 6 support shaft (upper and lower connecting portion) 7 connecting link 8 supporting shaft (connecting link) 9 guide groove

Claims (4)

[Claims] 1. A link connected to a pantograph type is arranged at two upper and lower stages of a vertical bar in an expansion gate, and an upper link and a lower link are connected via a connecting link, and an upper connecting portion of the upper link is provided. And the lower link of the lower link are pivotally and slidably supported on the vertical rail, and the lower link of the upper link and the upper link of the lower link are rotatable at both ends of the link. A telescoping gate that pivotally supports the center of the link and pivotally supports the center of the connecting link to the vertical rail. 2. A link connected to a pantograph type is arranged in two upper and lower stages of a vertical rail in an expansion gate, and an upper link and a lower link are connected via a connecting link, and an upper connecting portion of the upper link is provided. The lower link of the lower link and the lower link of the lower link are rotatably supported on the vertical rail, and the lower link of the upper link and the upper link of the lower link are rotated and slid to both ends of the link. A telescoping gate that pivots freely and pivots the center of the connecting link to a vertical rail. 3. A telescopic gate according to claim 1, wherein a guide groove for guiding the support shaft is provided at a central portion of the connection link, and the connection link is supported by the support shaft so as to be slidable and rotatable with respect to the vertical rail. . 4. A connecting shaft is provided with a guide groove for guiding a supporting shaft and a supporting shaft of a connecting portion of the upper and lower links, and the connecting link is supported by the supporting shaft so as to be slidable and rotatable with respect to the vertical rail. 3. The telescopic gate according to claim 2, wherein