JPH08260857A - Gate wheel device - Google Patents

Abstract

PURPOSE: To provide a gate wheel device which is manufacturable in a simple structure and at a low cost with a minimum number of part items and excellent in durability. CONSTITUTION: Both sides of a gate main body 6 on both inward and outward directions interconnecting with the opening direction of the gate 6 are provided with oscillating wheels 19 which may turn freely. Both wheels 19 are mounted on the gate main body 6 so that the center of each wheel 23 may be positioned on a straight line substantially identical to the inward and outward directions when each wheel 19 is directed to the opening direction of the gate main body 6. One wheel 24 which supports each wheel 23 turnably is inserted across both the oscillating wheels 19 in the inward and outward direction in a state wherein each wheel 23 is opened to the opening direction of the gate main body 6.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wheel device for a gate used for a retractable gate installed at a doorway of a building or a garage.

[0002]

2. Description of the Related Art Conventionally, as described in Japanese Utility Model Publication No. 6-19038, a wheel device for a telescopic gate having a pantograph mechanism has a vertical axis on both sides in the inner and outer directions orthogonal to the opening and closing direction of the gate body. Equipped with a swingable wheel that can swing freely around the center, a linking rod of a length that regulates the swingable wheel in a parallel state is placed horizontally between the swingable wheels. There is one in which both ends are detachably attached to a wheel receiver of each swingable wheel.

In this wheel device, when both ends of the connecting rod are attached to the wheel receiving member, both swingable wheels are regulated in a parallel state, and when the gate main body expands and contracts, each swingable wheel is placed on the ground side. It can be run along the guide rails. Therefore, if one kind of gate is provided with a pair of swingable wheels on both sides of the lower portion of the gate body, a connecting rod is laid horizontally between the swingable wheels to regulate it in a parallel state, or Depending on the construction site, there is an advantage that either the rail type or the caster type can be easily applied depending on whether the connecting rod is removed and the wheels can be swung freely.

[0004]

However, in the conventional wheel device, the connecting rod is horizontally mounted between the swingable wheels, and both ends of the connecting rod are used as wheel receivers of the swingable wheels. Since it is detachably attached and both swingable wheels are regulated in parallel, the structure is complicated, the number of parts increases, the manufacturing cost increases, and the horizontal swing of the swingable wheel is increased. It has the drawback that it tends to grow.

That is, since both ends of the connecting rod are detachably attached to the wheel holders of the swingable wheels, the connecting rods are provided separately from the constituent members constituting each swingable wheel. In addition to the necessity, it is necessary to provide a mounting means for mounting both ends of the connecting rod to each wheel receiver, such as integrally forming a protrusion having a through hole on each wheel receiver side.
There is a drawback that the structure is complicated and the number of parts increases.

Further, since the mounting means on the side of the wheel receiver is indispensable, it is difficult to use a commercially available general swingable wheel, and it is necessary to prepare a special swingable wheel. For this reason, the conventional wheel device has a drawback that the manufacturing cost is significantly increased in combination with the complicated structure and the increase in the number of parts.

Moreover, the swingable wheel is provided with a wheel receiving member which is rotatable around the vertical axis center through a swinging rotating portion, and the wheel is rotatably supported on the wheel receiving member by an axle. However, in the conventional wheel device, because the wheels of the swingable wheels are not directly regulated in parallel to each other, the wheel receivers of the swingable wheels are connected by the connecting rods. Lateral runout is likely to occur for each swingable wheel, and the lateral runout of the gate main body during opening and closing is large.

In other words, even if the wheel rods of the wheels which can swing freely are connected to each other by the connecting rod as in the conventional case, the swinging portion can easily perform the swinging motion of the wheel bearings around the vertical axis. Therefore, it is impossible to completely prevent the rattling of the wheel receiver that occurs for each swingable wheel because there is some play. Further, the connecting rod cannot prevent rattling that occurs between the wheel receiver and the axle, or between the axle and the wheel. For this reason, there is a drawback in that the shaft swing easily occurs in each swingable wheel, and the shaft swing causes lateral swing in the swingable wheel.

When the wheel of one swingable wheel rides on an obstacle or the like, the shaft runout of this wheel is coordinated with the other swingable wheel side via the axle, the wheel receiver, and the connecting rod. Since the movement is regulated, a large external force is applied to the wheel receiver of each swingable wheel. Moreover, when restricting the lateral shake of each swingable wheel, the distance from the swinging rotation part to the connecting rod is small compared to the distance from the swinging rotation part to the wheel, so mounting the wheel receiver A large external force may be applied to the part or the connecting rod.

Therefore, in the conventional wheel device, in order to improve the durability, the strength of the wheel receiving member and the connecting rod becomes a problem, and this also has a drawback that the manufacturing cost increases. In view of such conventional problems, an object of the present invention is to provide a wheel device for a gate that has a simple structure and can be manufactured at a low cost with a small number of parts, can reduce lateral shake, and has excellent durability. To do.

[0011]

According to the present invention as set forth in claim 1, swingable wheels 19 are provided on both sides in the inner and outer directions orthogonal to the opening and closing direction of the gate main body 6 so as to be swingable about the longitudinal axis. In the wheel device for gates, the swingable wheels 19 are swung freely so that the centers of the wheels 23 are located on substantially the same straight line in the inner and outer directions when the wheels 23 are oriented in the opening / closing direction of the gate body 6. One axle that is mounted on 6 and rotatably supports each wheel 23 with each wheel 23 facing the opening / closing direction of the gate body 6.
24 is mounted on the wheels 19 which can swing freely on both sides, and is mounted inward and outward.

[0012]

[Function] When the swingable wheels 19 are mounted on the gate body 6, when the wheels 23 are oriented in the opening / closing direction of the gate body 6, the centers of the wheels 23 are positioned on substantially the same straight line in the inward / outward direction. To Then, in a state where the wheels 23 of the swingable wheels 19 are oriented in the opening / closing direction of the gate body 6, one axle 24 is laid across the swingable wheels 19 in the inner and outer directions to A wheel (23) of a swingable wheel (19) is rotatably supported. As a result, the wheel 23 of each swingable wheel 19 can be supported by one axle 24, and both swingable wheels 19 can be regulated in a parallel state.

[0013]

Embodiments of the present invention will now be described in detail with reference to the drawings. The drawings illustrate one embodiment of the present invention. In FIGS. 1 and 2, reference numeral 1 is a suspension base side pillar, 2 is a door stop side pillar, and these pillars 1 and 2 are erected on the ground 4 at both left and right ends of a doorway 3 of a garage or the like. Reference numeral 5 is a guide rail, which is the ground 4 between the suspension base 1 and the door stop side support 2.
Two inside and outside are laid parallel to. The ground 4 between the two guide rails 5 is substantially level with the upper end side of the guide rails 5.

Reference numeral 6 denotes a telescopic gate body, which is provided between the suspension base 1 and the door stop side prop 2 so as to open and close so as to open and close the entrance / exit 3. The gate main body 6 includes a large number of vertical frame members 7 arranged at equal intervals in the expansion / contraction direction (opening / closing direction), and a pantograph mechanism 8 for connecting the vertical frame members 7 in an expandable / contractible manner in the opening / closing direction. I have it.

Each of the vertical frame members 7 has an inverted U shape having substantially the same width as each of the columns 1 and 2.
It is provided with a pair of vertical bars 9 that are in the shape of a letter and are arranged facing each other while being spaced apart in the inner and outer directions, and a connecting bar 10 that connects the upper end portions of the vertical bars 9 to each other. The vertical frame members 7 at both ends of the gate main body 6 in the expansion and contraction direction are integrally provided on the suspension base side end frame 11 and the door stop side end frame 12, and the suspension base side end frame 11 is connected via the hinge 13 to the suspension base side. It is connected to the strut 1 so as to be rotatable around the vertical axis. The door stop side end frame 12 has locking means 14 for locking the gate body 6 on the door stop side column 2 in a closed state, and a gate body.
A handle 15 to be held when opening and closing 6 is provided.

The pantograph mechanism 8 is inclined in an oblique direction so that each vertical frame member 7 intersects at four vertical positions, and adjacent vertical frame members 7 intersect at three vertical positions. And a plurality of diagonal crosspieces 16 arranged in a cross shape. Then, of the four pin shafts 17 inserted into the diagonal bars 16 at the intersections corresponding to the vertical frame members 7, the second pin shaft 17 from the bottom is inserted into each vertical bar member and the other The pin shaft 17 is fitted in each vertical frame member 7 so as to be vertically slidable.

Reference numeral 18 denotes a wheel device arranged at the center of the gate main body 6 in the direction of expansion and contraction and at the end on the door-stop side. It is provided with wheels 19 and is configured to support the gate body 6 along the guide rails 5 so as to be movable in the opening / closing direction.

Each of the wheel devices 18 has substantially the same structure, and is constructed so as to illustrate the door stop side in FIGS. 3 to 6. That is, each swingable wheel 19 has a mounting portion 20.
And a wheel receiving member 22 provided at the lower end of the mounting unit 20 via a swinging rotating unit 21 so as to be rotatable about the longitudinal axis, a wheel 23, and the wheel 23 being rotated by the wheel receiving unit 22. An axle 24 that is freely supported is provided, and the axle 24 has a length that straddles the swingable wheels 19, and one axle serves as the swingable wheels 19.

The mounting portion 20 is composed of a male screw in the vertical direction, is screwed into a female screw hole 26 of the mounting base 25 so as to be vertically adjustable, and a lock nut 27 is used to mount the mounting base 25.
It is fixed to. Each mount 25 is detachably attached to the lower portion of the vertical frame member 7 from the outside with a screw 28. A cap 37 is fitted to the upper side of the female screw hole 26.

The wheel receiver 22 has an inverted U-shaped cross section having a pair of leg portions 29 integrally formed therein, and each leg portion 29 is formed with an axle hole 30 located on the same axis. This axle hole 30
Is formed on the outside. The wheel 23 is made of synthetic resin, has a bush 31 embedded in the center thereof, and the axle 24 is inserted into the bush 31.

When the respective wheels 23 of the two swingable wheels 19 are oriented in the opening / closing direction of the gate main body 6, the axle holes 30 of the leg portions 29 of the wheel receivers 22 and the centers of the respective wheels 23 are in the inward / outward direction. They are located on substantially the same straight line, and one axle 24 is free to swing so that each wheel 23 is rotatably supported with each wheel 23 facing the opening / closing direction of the gate body 6. It is laid across the wheels 19 inward and outward. Axle 24 is head on one end
33 is integrally formed, and the cap nut 34 is detachably screwed to the screw portion of the other end.
Both swingable wheels 19 are regulated in parallel by 34 and the like.

The head portion 33 and the cap nut 34 constitute a stopper for preventing coming off, and are fitted from the outside into a recess 32 formed in the leg portion 29. The head 33 may be formed by a cap nut. The wheel device 18 of this embodiment has the following advantages. Since one axle 24 is mounted across the swingable wheels 19 on both sides of the gate main body 6, the swingable wheels 19 can be swung by this one axle 24.
Can be regulated in parallel. That is, by inserting one axle 24 across the two swingable wheels 19, the one axle 24 is mounted on the wheel 23 of each swingable wheel 19.
It has a function of rotatably supporting the wheel and a function of restricting the wheels 19 which can be swung freely in a parallel state.

Therefore, in this embodiment, in addition to the original role of supporting the wheel 23 by one axle 24, it also functions as a conventional connecting rod. Can be regulated in parallel. Therefore, the structure can be greatly simplified and the number of parts can be reduced as compared with the conventional case.

When the axle 24 is mounted on the swingable wheels 19, the single axle 24 is inserted into the axle hole 30 formed in the wheel receiver 22 of the swingable wheels 19, and Cap nut on axle 24 so that swingable wheel 19 is in parallel
34 should be screwed and tightened. Therefore, as compared with the case where both ends of the conventional connecting rod are mounted on the wheel receiving members 22,
It is not necessary to perform special processing such as providing a mounting means on the wheel receiver 22 side, and it can be sufficiently performed even if a commercially available general swingable wheel 19 is used. Therefore, the manufacturing is easy, and the manufacturing cost can be reduced in combination with the simplification of the above-described structure and the reduction in the number of parts, and the cost can be reduced.

Further, the axle is straddled over the wheels 19 which can swing freely.
Since 24 is inserted and regulated in a parallel state, the external appearance is improved and the appearance is better than in the past. That is, in the past, since the wheel receiving members 22 are connected by the connecting rod, there is a connecting rod only for regulation separately from the constituent members of the swingable wheel 19, and the connecting rod is located above the axle 24. Since it is located, the external appearance may be greatly impaired depending on the structure of the connecting rod and the mounting means, particularly the mounting means.

However, in this embodiment, the swingable wheels 19 are regulated in a parallel state by the axles 24 that are inserted over the swingable wheels 19. For this reason, it is sufficient to change the structure such that the axle 24 extends, and since it is located at a low position where it is hard to see, the appearance can be improved without impairing the external design.

Further, by inserting the axle 24 so as to straddle the swingable wheels 19, the lateral swing of each swingable wheel 19 can be reduced. That is, the wheels that swing freely on both sides 19
Even if the wheel is restricted to a parallel state, since the swingable wheel 19 has play in each part thereof, the wheel receiver 22 rotates around the vertical axis centering around the swinging rotation part 21 as a fulcrum. Then, the wheel 23 pivots slightly with respect to the wheel receiver 22, and lateral swing occurs in each swingable wheel 19.

However, if the axle 24 is passed over the swingable wheels 19 as in this embodiment, the axle holes 30 of the wheel receiver 22 and the axle 24 of each swingable wheel 19 are inserted. Even if there is some play between and, there is almost no rotation of each wheel receiver 22 about the swinging rotation part 21 as a fulcrum, and there is almost no axial runout of the axle 24 with respect to each wheel receiver 22.

Even if there is some play between the axle 24 and the bush 31 of the wheel 23, one axle 24 straddles the two swingable wheels 19, and the axle runout of the axle 24 itself is almost eliminated. Since there is no wheel 23, the shaft runout of the wheel 23 is equivalent to the amount of play, which is not a problem. Therefore, the lateral swing of each swingable wheel 19 can be reduced as compared with the conventional case in which the axle 24 is independent for each swingable wheel 19, and the gate body 6 is smoothly guided along the guide rails 5 to expand and contract. be able to.

Further, since the wheel 24 swingable by the axle 24 is restricted to the parallel state, even if an external force in the axial runout direction is applied to one of the wheels 23 due to an obstacle on the guide rail 5, the wheel 23 can be swung. Since the shaft runout of the wheelchair can be directly regulated by the axle 24, it is possible to reduce the load on the wheel support 22 and prevent damage.
The durability of the swingable wheel 19 is improved.

The axle 24 is removably inserted into an axle hole 30 formed in the wheel receiving member 22 of the swingable wheel 19, and a cap nut 34 is detachably screwed to the end of the axle 24. Therefore, the work for assembling and disassembling is easy.

In particular, one axle 24 swings freely on both sides of the wheel 19
Since it is inserted through the pair of legs 29 of the wheel receiver 22 and the wheel 23 between the pair of legs 29, the heads are attached to both ends of the axle 24.
It is sufficient to provide 33 and a cap nut 34 to prevent them from coming off, and it is necessary to provide a stopper or the like on the axle 24 inside each swingable wheel 19 so as to positively regulate the interval between the swingable wheels 19. Nor. In other words, 1
It suffices to insert a book axle 24 and provide stoppers at both ends of the axle 24 to prevent the wheels from swinging.
Since it is not necessary to provide a stopper such as a nut so as to sandwich the wheel receiver 22 from both sides for each 19, the structure for preventing the axle 24 from coming off is extremely simple and the work such as assembling is easy.

In the case of a caster type construction site, it is sufficient to use swingable wheels 19 with independent axles 24. Although the embodiment of the present invention has been described above, the present invention is not limited to this embodiment. For example,
Stoppers at both ends of the axle 24 are cap nuts 34
In addition to the above, a split pin, a retaining ring or the like may be used as long as it can prevent the axle 24 from coming off the wheel receiver 22. Further, the gate body 6 may have a non-stretchable structure. Further swingable wheels
The shapes and structures of the mounting portion 20, the wheel receiving member 22 and the like of 19 may be those other than the embodiment.

[0034]

According to the present invention as set forth in claim 1, the gate is provided with swingable wheels 19 which are swingable about the longitudinal axis on both sides in the inner and outer directions orthogonal to the opening and closing direction of the gate body 6. In the wheel device, the swingable wheels 19 are attached to the gate main body 6 so that when the wheels 23 are oriented in the opening / closing direction of the gate main body 6, the centers of the wheels 23 are located on substantially the same straight line in the inward / outward direction. One axle 24, which is mounted and rotatably supports each wheel 23 in a state in which each wheel 23 is oriented in the opening / closing direction of the gate body 6, is mounted in the inward / outward direction across the freely swingable wheels 19. Because
The structure can be simplified, the number of parts can be reduced, the manufacturing can be performed inexpensively and easily, the lateral swing of each swingable wheel 19 can be reduced, and the design and the durability can be improved.

[Brief description of drawings]

FIG. 1 is a front view of an entire gate showing an embodiment of the present invention.

FIG. 2 is a plan view of the entire gate showing an embodiment of the present invention.

FIG. 3 is a partially cutaway front view of a wheel device according to an embodiment of the present invention.

FIG. 4 is a side view of a wheel device showing an embodiment of the present invention.

FIG. 5 is a cross-sectional plan view of a wheel device showing an embodiment of the present invention.

FIG. 6 is a cross-sectional plan view of a wheel device showing an embodiment of the present invention.

[Explanation of symbols]

 6 Gate body 18 Wheel device 19 Wheels that can swing freely 22 Wheel supports 23 Wheels 24 Axles

Claims (1)

[Claims] 1. A wheel device for a gate, comprising swingable wheels (19) swingable about a longitudinal axis on both sides in an inner and outer direction orthogonal to an opening and closing direction of a gate body (6), wherein each wheel ( When swinging 23) toward the opening / closing direction of the gate body (6), the swingable wheels (19) are swung freely so that the centers of the wheels (23) are located on substantially the same straight line in the inward and outward directions. ) Mounted on each wheel (23), with one wheel (23) rotatably supporting each wheel (23) with the wheels (23) directed toward the opening and closing direction of the gate body (6).
A wheel device for a gate, characterized by being installed inward and outward over the (19).