JP3405692B2 - Telescopic gate - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a telescopic gate having a pantograph telescopic mechanism, and in particular, a wheel device is not provided below a door body whose passage portion is openable and closable.
It is related to an expandable gate that is commonly called a hanger type.

[0002]

2. Description of the Related Art A hanger-type telescopic gate does not require full-scale construction such as fixing unevenness in aisles or laying rails that guide the gate, thus simplifying construction and saving labor. It is widely used because it can be designed. Particularly in recent years, there are various types of pavement for road surfaces including passages, such as wooden brick pavement, interlocking block pavement with unevenness on the road surface, or color pavement. There is a problem that the wheel marks of the caster device due to the rubber wheels remain on the pavement surface, but in these hanger type expansion / contraction gates, the caster device does not run in the passage and such a problem does not occur. It is a thing.

However, the hanger type expansion / contraction door having the pantograph expansion / contraction mechanism has the link members constituting the pantograph expansion / contraction mechanism pin-connected, and the link members rotate about the pin connection part, so that a clearance is provided at the pin connection part. It is difficult to apply because the door end suspended by a fixed part such as a gate pillar hangs down at its door stop end due to its own weight and the door end of the door comes into contact with the road surface in a passage with a wide opening. Met.

The applicant of the present patent application has proposed that the link member should be inclined in opposite directions at the front and rear positions as a means for eliminating the hanging of the end of the door body door which is already suspended on the gate pillar or the like in the expandable gate of this type. In a telescopic gate door in which one pin shaft is integrally fixed and the other pin shaft is slidably fitted to a vertical lattice that is pin-connected to the front and rear outside of the link member, It has been proposed to make the distance between the pin axes of the link member in the upper portion smaller than the distance between the pin axes of the link member in the lower portion of the door body (Japanese Patent Laid-Open No. 9-177).
455).

[0005]

The distance between the pin axes of the link members in the upper portion of the door body is made smaller than the distance between the pin axes of the link members in the lower portion of the door body when the pantograph expansion / contraction mechanism is extended. Due to the balance between the warping of the door body that occurs and the sagging of the extended door body due to its own weight, the door body is maintained in a horizontal state, and a remarkable effect is recognized.

However, when the door body of the expandable gate having such a structure is further lengthened, drooping due to its own weight increases sharply, and in order to avoid this, the distance between the pin axes of the link member in the upper part and the lower part in the lower part are avoided. If the difference between the pin-axis distances of the link members is large, it is not possible to fold the adjacent link members in close proximity to each other when the door is contracted, and the aesthetic appearance in the folded state is significantly reduced, and the folding width is reduced. There was a problem that it became large and the site could not be used effectively.

[0007]

DISCLOSURE OF THE INVENTION As a result of intensive studies in view of such circumstances, the present inventors have suspended one side of a door body having a pantograph expansion / contraction mechanism on a fixed portion such as a gate pillar, and The door can be expanded and contracted between the extension width where the expansion mechanism is in the extended state and the folding width where the pantograph expansion mechanism is in the folded state, and only in the lower part of the door that is located within the range of the folded width when the door is extended. It was confirmed that the intended purpose can be achieved by providing the caster device, and the present invention has been completed.

Further, according to the expandable gate of the present invention, the caster device is provided only on the door-contact end side of the lower part of the door body, which is located within the range of the folding width in the extended state of the door body, and the caster device is the most door-contact type. By disposing it on the end side, the length of the door body located closer to the door contact side than the caster device can be minimized, so that the door body can be prevented from hanging down.

[0009]

According to the present invention, since the caster device is provided only on the lower portion of the door body located within the range of the folding width in the extended state of the door body, the position for supporting the door body in the cantilever state is the gate post. It is possible to prevent the drooping of a large door body centering on the fixed portion by shifting from the fixed portion such as to the position where the caster device is provided.

Furthermore, since the caster device is not provided under the door for opening and closing the passage, there is no need to adjust the unevenness of the passage, and despite the caster being provided,
It can be applied to all types of pavement surfaces as in the past. The position where the caster device is installed is the lower part of the extended door body located within the range of the folding width of the door body, and the door body is always located within the range of the folding width of the door body and the folded state. Since the door body is stored in the part surrounded by the fence or in the door pocket provided along the passage, even if the caster device is installed in this part, the wheel marks should be easily visible from the outside. There is no such thing.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be specifically described with reference to Examples. 1 to 3 show a first embodiment of the present invention, in which 1 is an expansion / contraction gate, and the expansion / contraction gate 1 includes a door body 3 having a pantograph expansion / contraction mechanism 2. In the pantograph expansion / contraction mechanism 2, a link member 21 made of an aluminum mold material having a length of 30 mm, a width of 16 mm, and a thickness of 1.6 mm, which is inclined in opposite directions, is provided with a pin shaft 22.
The two rhombic patterns that are vertically connected and are surrounded by the link member 21 are arranged so as to be repeated in the left-right direction. The distance between the pin axes of the main link member 21 is 170 m from the upper end to the lower end.
m, 171 mm, 345 mm, and 174 mm, and the pin shaft 22 is loosely fitted and fixed at the intersecting position of the front and rear link members, and 22 m vertically and horizontally outside the front and rear link members 21.
m vertical cross-section vertical grids 23 each having a thickness of 1.6 mm and made of an aluminum mold material are provided.

The pin shaft 22 at the second intersecting position from the top where the link member 21 and the vertical lattice 23 intersect is projected outward in the front and rear direction and connected to the vertical lattice 23, and the pin shaft 22 at the intersecting position of the upper end and the lower end. 22 is projected outward in the front-rear direction, and its tip end is slidably fitted to the U-shaped portion of the vertical lattice 23 via a guide roller (not shown).

A hanging frame 4 is arranged at the hanging end of the door body 3, and a door contact frame 5 is arranged at the door contact end, and the pin shaft 22 of the link member 21 is attached in the same manner as the vertical grid 23. Has been. In addition, reference numeral 6 in the drawing denotes a suspension base, which is a fixed portion, to which the suspension frame 4 is fixed. Reference numeral 7 is a door-stop column, which can be locked with a lock device provided on the door-stop frame 5.

In the extended state in which the door body 3 shown in FIG. 1 is extended to the maximum, the extension width is 4.84 m, the distance between the adjacent vertical lattices 23 is 335 mm, while the door body 3 shown in FIG. 2 is in the folded state. The folding width L at is 810 mm. A caster device 8 is provided in the lower portion of the door body located within the range of the folding width L in the extended state of the door body 3, and in the present embodiment, is provided at the lower end of the vertical lattice 23 that is second from the hanging end. Has been.

Since the caster device 8 is provided under the extended door body 3 located within the range of the folding width L, the moving range of the caster device 8 is limited to the range of the folding width L. The range of the folding width L in which the caster device 8 rolls is preferably made smooth by adjusting the unevenness of the road surface with mortar or the like, but it is not necessary to match it with the pavement of the road surface such as a passage.

FIG. 3 shows a partially cutaway sectional view of a portion where the caster device 8 of the first embodiment is provided. The caster device 8 is provided at the lower end portion of the vertical lattice 23, Both ends of the shaft 81, which passes through the lower end of the vertical grid, are axially supported by bearings 83 fixed via L-shaped joint fittings 82 on both outer sides of the vertical grid 23, and wheels 84 are provided on both sides of the shaft 81. It is a thing.

In the expandable gate 1, the caster device 8
For each of the case (A) in which the caster device 8 is not provided and the case (B) in which the caster device 8 is provided at the lower end portion of the vertical lattice 23, the degree of sagging at the end of the door stop with respect to the hanging position of the extended door body As a result of examination, (A) is 100 m
m and (B) are 20 mm, and when the caster device 8 is provided, drooping at the door contact end of the door body 3 is dramatically reduced.

The expandable door 1 shown in FIG. 4 represents the second embodiment of the present invention, and is made up of aluminum mold members having a length of 30 mm, a width of 16 mm, and a thickness of 1.6 mm that compose the pantograph expansion mechanism 2. The link members 21 tilted in the direction are pivotally connected by the pin shafts 22, and two vertically arranged rhombic patterns surrounded by the link members are arranged so as to be repeated in the left-right direction. The distance between the pin axes of the main link member 21 is 170 mm, 171 mm, 345 mm and 174 from the upper end to the lower end.
The pin shaft 22 is loosely fitted and fixed at the intersecting position of the front and rear link members 21, and the hanging frame 4 is attached to the hanging end of the door body 3.
The door stop frame 5 is arranged at the door stop end in the same manner as in the first embodiment, the suspension base frame 4 is fixed to the suspension support post 6 which is a fixed portion, and the door stop frame 5 is engaged with the door stop support post 7. Then, the expandable door 1 having the opening width of the extended door body 3 the same as that of the first embodiment is configured.

The folding width L of the door body 3 in the folded state is 8
The support member 24 is provided on the door body 3 at a position of about 680 mm from the hanging side when the door body 3 is extended. The support member 24 has a length of 22 and a width of 22.
mm, a 1.6 mm thick prismatic aluminum mold member, and a pair of front and rear link members 21,
It is arranged between 21. The pin shaft 22 at the upper intersection position where the link member 21 and the support member 24 intersect is inserted into the shaft hole provided in the support member 24, and the pin shaft 22 at the lower intersection position is formed in the intermediate portion of the support member 24. The caster device 8 is provided at the lower end of the support member 24, which is inserted through a long hole extending in the vertical direction.

In the telescopic gate 1 of the second embodiment, the caster device 8 is not provided (A) and the caster device 8 is provided at the lower end portion of the support member 24 (B), respectively. As a result of investigating the degree of sagging at the end of the door contact with respect to the hanging position of the door body 3, (A)
Is 100 mm and (B) is 20 mm, and drooping at the end of the door contact of the door body 3 can be dramatically reduced as in the first embodiment.

[0021]

INDUSTRIAL APPLICABILITY According to the present invention, in an expandable gate door called a hanger type in which a door body for opening and closing a passage portion is suspended on a gate pillar or the like and the unevenness of the passage portion is not adjusted, the extended door body hangs down. This makes it possible to lengthen this type of expandable gate.

[Brief description of drawings]

FIG. 1 is an elevational view of a telescopic gate of a first embodiment of the present invention in a door body extended state.

FIG. 2 is an elevational view showing a telescopic gate of the first embodiment of the present invention in a folded state of a door body.

FIG. 3 is an enlarged vertical sectional view showing a main part of an expandable gate according to the first embodiment of the present invention.

FIG. 4 is an elevational view showing a telescopic gate of the second embodiment of the present invention in an extended state of a door body.

[Explanation of symbols]

1 Telescopic gate 2 Pantograph expansion mechanism 3 door body 4 hanging frame Frame for 5 units 6 Suspension base (fixed part) 7 door per support 8 casters L folding width

Claims (2)

(57) [Claims] 1. A door body having a pantograph expansion / contraction mechanism is suspended on one side of a fixed part such as a gate pillar, and extends between an extension width in which the pantograph expansion / contraction mechanism is in an extended state and a folding width in which the pantograph expansion / contraction mechanism is in a folded state. An expandable gate that is characterized in that the door body is made expandable and retractable, and the caster device is provided only on the lower portion of the door body located within the range of the folding width when the door body is in the extended state. 2. The expandable gate door according to claim 1, wherein the caster device is provided only on the door contact end side of the lower portion of the door body located within the range of the folding width in the extended state of the door body.