JP5657993B2 - Telescopic gate - Google Patents

Description

  The present invention relates to a telescopic gate. More specifically, the present invention relates to a telescopic gate provided with wheels that run on rails laid on the ground.

In general, a telescopic gate has a structure in which a plurality of vertical frames are connected by a link mechanism, and a movable end frame that is a vertical frame on a door-to-door support column is provided with handles on the inside and outside of the gate. ing.
When opening and closing the telescopic gate, a pulling force is applied to the moving end frame to pull the inner or outer handle, and the moving end frame and other vertical frame are applied. Since there is some play in the link mechanism that connects the two, the moving end frame is twisted about the vertical axis. When this twist is large, the wheel provided at the lower end of the moving end frame is inclined with respect to the rail, and the flange of the wheel comes into strong contact with the side surface of the rail, and the smooth resistance prevents opening and closing operation. is there.

Moreover, in order to prevent a wheel from derailing from a rail or a telescopic gate from falling down, a fall prevention metal fitting may be attached to the telescopic gate (for example, patent document 1).
In FIG. 11, reference numeral 3 denotes a rail, which includes a rolling surface 31, a side surface 32 that hangs down from one side of the rolling surface 31, and a U-shaped locking groove 33 that is connected to the lower end of the side surface 32. Have. A support bracket 51 is attached to the lower end of the movable end frame 41 a of the telescopic gate. A wheel 50 is rotatably supported on the support bracket 51 so that the wheel 50 rolls along the rolling surface 31. It has become. The support bracket 51 is attached with an L-shaped fall-preventing metal fitting 170 in side view, and a locking portion 175 at the lower end is inserted into the locking groove 33 of the rail 3. The front end of the locking portion 175 and the vertical surface of the locking groove 33 are usually provided with a gap of about 3 mm, so that it does not affect the opening / closing operation of the telescopic gate, but it falls over the telescopic gate. When an external force is applied, the locking portion 175 is locked in the locking groove 33, so that the telescopic gate can be prevented from falling down.

  However, as described above, when the telescopic gate is opened and closed, the moving end frame 41a is twisted around the vertical axis, and if the twist is large, the fall prevention metal fitting 170 and the rail 3 come into contact with each other. More specifically, as shown in FIG. 12A, when one handle 43a attached to the moving end frame 41a (for example, the handle inside the gate) is grasped and pulled rightward in FIG. The moving end frame 41a tends to be twisted counterclockwise in plan view. Therefore, as shown in FIG. 12B, the fall prevention metal fitting 170 attached to the handle 43 a side (inside the gate) is inclined so that the right side thereof approaches the rail 3. Then, the right corner of the locking portion 175 contacts the locking groove 33 of the rail 3. Therefore, there is a problem that smooth opening / closing operation cannot be performed due to the frictional resistance.

No. 8-474

  In view of the above circumstances, an object of the present invention is to provide a telescopic gate that can be smoothly opened and closed without frictional resistance.

The telescopic gate according to the first aspect of the invention is an telescopic gate to which wheels running on the rail are attached, and a torsion suppressing member having an abutting portion is attached, and the abutting portion contacts the side surface of the rail. It is provided so that it may contact, and the torsion prevention member is integrally formed with a locking portion to be inserted into the locking groove of the rail .
The telescopic gate of the second invention is the first invention, wherein the dimension of the locking portion protruding direction between the contact portion and the tip of the locking portion is the side surface of the rail and the vertical surface of the locking groove. It is characterized by being shorter than the dimension between .
A telescopic gate according to a third aspect of the invention is characterized in that, in the first or second aspect of the invention, the telescopic gate includes a height adjusting mechanism that adjusts the height of the contact portion with respect to the wheel .
A telescopic gate according to a fourth aspect of the present invention is the first, second, or third aspect of the invention, wherein a torsion suppressing member having a pair of abutting portions is attached, and the pair of abutting portions abuts against the side surface of the rail. As described above, the rails are provided in the direction in which the rail extends so as to sandwich the wheels.
The telescopic gate according to a fifth aspect of the present invention is characterized in that, in the first, second, third or fourth aspect, the contact portion is a side roller.
The telescopic gate of the sixth invention is characterized in that, in the first, second, third or fourth invention, the abutting portion is a sliding portion .

The first invention has the following effects.
a) Since the abutting portion is provided, even when the vertical frame is about to be twisted around the vertical axis when opening and closing the telescopic gate, the abutting portion abuts on the side surface to suppress twisting around the vertical axis. be able to. Therefore, it can prevent that the flange of a wheel contacts a rail strongly, and a fall prevention metal fitting contacts a rail.
b) Since the locking portion is provided, the fall-preventing metal fitting attached to the telescopic gate can be twisted and replaced with the restraining member. Therefore, the present invention can also be applied to a conventional telescopic gate door to which a fall prevention metal fitting is attached. Moreover, since the latching | locking part is provided, even if the external force which falls to an expansion-contraction gate door is added, it can prevent that an expansion-contraction gate door falls.
According to the second aspect of the present invention, the gap between the locking portion and the locking groove is larger than the gap between the contact portion and the side surface, so that the vertical frame is twisted around the vertical axis when opening and closing the telescopic gate. However, the locking part does not contact the locking groove, and the telescopic gate can be opened and closed smoothly.
According to the third invention, since the height of the contact portion can be adjusted to the same height as the side surface of the rail by the height adjusting mechanism, it is possible to deal with rails having various shapes.
According to the fourth aspect of the invention, since the pair of abutting portions are provided with the wheels interposed therebetween, either the pair of abutting portions is a side surface when the telescopic gate is opened or closed. Can be prevented from being twisted. Therefore, it is possible to prevent the wheel flange from coming into strong contact with the rail and the fall-preventing metal fitting from coming into contact with the rail, and to smoothly open and close the telescopic gate.
According to the fifth aspect, even if the side roller contacts the rail, the side roller rotates along the rail, so that no frictional resistance is generated. Therefore, the telescopic gate can be opened and closed smoothly.
According to the sixth aspect of the present invention, even if the sliding portion comes into contact with the rail, it slides along the rail, so that a large frictional resistance is not generated. Therefore, the telescopic gate can be opened and closed smoothly .

It is a front view of the expansion-contraction gate which concerns on 1st Embodiment of this invention. It is a top view of the expansion-contraction gate. It is a side view of the telescopic gate. It is an enlarged view of the lower end part of the movement end frame body of the expansion-contraction gate, Comprising: (A) is a front view, (B) is a sectional view in side view. The twist prevention member attached to the expansion-contraction gate is shown, (A) is a top view, (B) is a front view, (C) is a side view. It is explanatory drawing of the twist suppression effect, Comprising: (A) is a top view, (B) is a top view of the twist suppression member attached to B part in (A) figure. It is an enlarged view of the lower end part of the movement end frame body of the expansion-contraction gate, Comprising: (A) is a front view, (B) is a sectional view in side view. The twist prevention member attached to the expansion-contraction gate which concerns on 2nd Embodiment of this invention is shown, (A) is a top view, (B) is a front view, (C) is a side view. It is an enlarged view of the lower end part of the movement end frame body of the expansion-contraction gate, Comprising: (A) is a front view, (B) is a sectional view in side view. It is explanatory drawing of the twist suppression effect, Comprising: (A) is a top view, (B) is a top view of the twist suppression member attached to B part in (A) figure. It is an enlarged view of the lower end part of the movement end frame body of the conventional expansion-contraction gate, Comprising: (A) is a front view, (B) is side view sectional drawing. It is explanatory drawing of the state in which a fall prevention metal fitting contacts a rail, Comprising: (A) is a top view, (B) is a top view of the fall prevention metal fitting attached to B part in (A) figure.

Next, an embodiment of the present invention will be described with reference to the drawings.
(First embodiment)
1, 2, and 3, reference numeral 1 is a suspension support column, 2 is a door support column, and two rails 3 and 3 are laid between the suspension support column 1 and the door support column 2. Yes. The telescopic gate body 4 includes a plurality of vertical frame bodies 41 arranged between the suspension base column 1 and the door-to-door column 2, and a pantograph mechanism 42 that connects the intervals between the vertical frame units 41 in a telescopic manner. ing. A pair of wheels 50 and 50 are attached to the lower ends of the moving end frame 41a, which is a vertical frame on the door-to-door support column 2 side, and the other part of the vertical frame 41, respectively. It is designed to run on the top.

The moving end frame 41a is provided with handles 43, 43 on the inner side and the outer side (the right side and the left side in FIG. 3), respectively. If the handle 43 is grasped and pulled in the direction in which the telescopic gate main body 4 is contracted (the suspension side), the pantograph mechanism 42 contracts and the gate can be opened. Moreover, if the handle 43 is grasped and it pulls in the direction (door stop side) to which the expansion-contraction gate main body 4 is extended, the pantograph mechanism 42 will expand | extend and a gate can be closed.
Normally, the opening / closing operation is performed by grasping only one handle 43 inside or outside the gate. Therefore, a force that twists around the vertical axis is applied to the moving end frame 41a during the opening / closing operation.

  As shown in FIG. 4, the rail 3 includes a rolling surface 31, a side surface 32 that hangs down from one side of the rolling surface 31, and a U-shaped locking groove 33 that is connected to the lower end of the side surface 32. have. The rail 3 is embedded so that the rolling surface 31 is at the same height as the ground, and is generally called a flat rail. The flat rail has the feature that there is little unevenness on the ground at the entrance / exit where the gate is installed, so that it does not rattle even if the vehicle passes.

Support brackets 51 are respectively attached to the inner and outer sides of the gate at the lower end of the moving end frame 41a, and wheels 50 are rotatably supported on the support bracket 51. The support bracket 51 has an inverted U shape when viewed from the side, and covers the upper portion of the wheel 50. The wheel 50 rolls along the rolling surface 31 of the rail 3, and the flange 50 a of the wheel 50 comes into contact with the side surface 32 of the rail 3.
A wheel 50 and a support bracket 51 having the same configuration are also attached to the lower ends of the other part of the vertical frame bodies 41.

A twist suppressing member 60 is attached to the support bracket 51 attached to the lower end of the moving end frame 41a.
As shown in FIG. 5, the twist preventing member 60 includes a frame 61 and a pair of bearing portions 62 and 62 formed at both ends of the frame 61. The frame 61 is a flat plate member, and has a hole 61 h into which a bolt for attaching to the support bracket 51 is inserted. In addition, an arc-shaped depression is formed on the upper portion of the frame 61 so as not to interfere with the axle of the wheel 50 when attached to the support bracket 51. The bearing portion 62 is a cylindrical member, and an upper portion thereof is coupled to the frame 61 so that the axial direction is vertical. A pair of side rollers 63 and 63 are rotatably inserted into the pair of bearing portions 62 and 62. A screw 64 is screwed into the bearing portion 62 from below, and the side roller 63 is supported by the head of the screw 64. The side roller 63 is made of nylon resin.

The lower end of the frame 61 extends below the side rollers 63 and 63, and a locking portion 65 is connected thereto. The locking portion 65 is a flat plate-like member provided horizontally and has a substantially trapezoidal shape in plan view. The long side of the locking part 65 is connected to the lower end of the frame 61, and the frame 61 and the locking part 65 are L-shaped in side view.
In plan view, the side rollers 63 and 63 and the locking portion 65 protrude from the frame 61, but the locking portion 65 protrudes from the side rollers 63 and 63.

As shown in FIG. 4, the twist suppressing member 60 is attached to a support bracket 51. When the torsion preventing member 60 is attached to the support bracket 51, the pair of side rollers 63, 63 are provided at the same height as the side surface 32 of the rail 3 and sandwiching the wheel 50 in the direction in which the rail 3 extends. Be able to. Further, the locking portion 65 is inserted into the locking groove 33 of the rail 3.
A long hole 51h extending in the vertical direction is formed in the support bracket 51, and a bolt is passed through the hole 61h of the twist prevention member 60 and the long hole 51h of the support bracket 51, and a nut is screwed into the twist prevention member 60. Is attached to the support bracket 51. Since the support bracket 51 side is a long hole, the height of the twist preventing member 60 relative to the support bracket 51 can be adjusted, and the height of the side rollers 63 and 63 can be adjusted to the same height as the side surface 32 of the rail 3. A mechanism that allows the height of the side rollers 63 and 63 to be adjusted by forming a long hole 51h in the support bracket 51 corresponds to a “height adjusting mechanism” described in the claims.

With the configuration as described above, even when the moving end frame 41a is twisted about the vertical axis when the telescopic gate is opened and closed, the side roller 63 contacts the side surface 32 of the rail 3 to suppress twisting. Can do.
More specifically, as shown in FIG. 6 (A), when one grip 43a (for example, the handle inside the gate) attached to the moving end frame 41a is grasped and pulled rightward in FIG. The moving end frame 41a tends to be twisted counterclockwise in plan view. Therefore, as shown in FIG. 6B, the twist preventing member 60 attached to the handle 43 a side (inside the gate) is inclined so that the right side thereof approaches the rail 3. If it does so, it can suppress that the right side roller 63 contact | abuts to the side surface 32 of the rail 3, and the moving end frame 41a is twisted further by the reaction force. Similarly, the twist preventing member 60 attached to the other handle 43b side (outside of the gate) is inclined so that the left side approaches the rail 3. If it does so, the left side roller 63 will contact | abut to the side surface 32 of the rail 3, and it can suppress that the moving end frame 41a is twisted further by the reaction force. Therefore, even if the flange 50 a of the wheel 50 contacts the side surface 32, strong frictional resistance does not occur, and the locking portion 65 does not contact the locking groove 33. Even if the side roller 63 abuts on the side surface 32, the side roller 63 rotates along the rail 3, so that no frictional resistance is generated. Therefore, the telescopic gate can be opened and closed smoothly.

  In this embodiment, since the pair of side rollers 63, 63 are provided with the wheel 50 interposed therebetween, even if the handle 43a of the moving end frame 41a is grasped and pulled leftward in FIG. It can suppress that 63 contact | abuts to the side surface 32 of the rail 3, and the moving end frame 41a is twisted. That is, the opening / closing operation can be smoothly performed both when opening and closing the telescopic gate.

In addition, it is preferable to open a gap of about 1 mm between the side roller 63 and the side surface 32 in a state where the moving end frame body 41a is not twisted. This is because if the side roller 63 and the side surface 32 are always in contact with each other, unnecessary resistance may occur when the moving end frame 41a is not twisted. Also, when the moving end frame 41a is about to be twisted, the twist is minimized.
Moreover, it is preferable to open a gap of about 3 mm between the tip of the locking part 65 and the vertical surface of the locking groove 33, and it is necessary to open a gap larger than at least the gap between the side roller 63 and the side surface 32. When the clearance between the locking portion 65 and the locking groove 33 is smaller than the clearance between the side roller 63 and the side surface 32, the locking portion 65 is more than the side roller 63 when the moving end frame 41a is twisted. This is because the locking groove 33 is first contacted.

Since the torsion prevention member 60 of the present embodiment is configured by the frame 61 and the locking portion 65 to constitute a fall prevention metal fitting, the fall prevention metal fitting attached to the telescopic gate can be removed and replaced. That is, the torsional restraining member 60 can be attached to a conventional telescopic gate door to which a fall-preventing metal fitting is attached, and there is no need to replace the telescopic gate itself.
Moreover, since the latching | locking part 65 is provided, even if the external force which falls to an expansion-contraction gate door is added, it can prevent that an expansion-contraction gate door falls.

  Although the case where the rail 3 is a flat rail has been described above, the rail 3 may be a convex rail as shown in FIG. The convex rail 3 ′ has a rolling surface 31 ′ and a U-shaped locking groove 33 ′ in side view, which is connected by folding back one side of the rolling surface 31 ′. A folded portion 32 ′ between the rolling surface 31 ′ and the locking groove 33 ′ corresponds to the side surface 32 in the flat rail. The convex rail 3 ′ is filled with concrete or the like between the two rails 3 ′ and has the same height as the rolling surface 31 ′. On the outer side of the two rails 3 ′, the lower end of the locking groove 33 ′ and the height of the ground are the same.

Since the folded portion 32 ′ of the convex rail 3 ′ is located above the side surface 32 of the flat rail 3, it is necessary to make the side roller 63 higher in accordance with the folded portion 32 ′. As described above, since the height of the side roller 63 can be adjusted by adjusting the attachment position of the twist preventing member 60, the height of the side roller 63 can be set to the same height as the folded portion 32 ′.
As described above, the height of the side roller 63 can be adjusted to the same height as the side surface of the rail by the height adjusting mechanism, so that it is possible to deal with various shapes of rails.

(Second Embodiment)
In the telescopic gate according to the second embodiment of the present invention, the twist preventing member 60 'is attached to the support bracket 51 attached to the lower end of the moving end frame 41a.
As shown in FIG. 8, the twist preventing member 60 ′ has a pair of sliding portions 66, 66 instead of the pair of side rollers 63, 63 in the twist preventing member 60 according to the first embodiment. . The pair of sliding portions 66 and 66 are formed by bending both ends of the frame 61. The sliding portion 66 has a U-shape in plan view and protrudes with respect to the frame 61 in the same direction as the locking portion 65. Note that the locking portion 65 protrudes from the sliding portions 66 and 66. Since the remaining structure is the same as that of the twist preventing member 60 according to the first embodiment, the same members are denoted by the same reference numerals and description thereof is omitted.

As shown in FIG. 9, the twist prevention member 60 ′ is attached to the support bracket 51. When the twist preventing member 60 ′ is attached to the support bracket 51, the pair of sliding portions 66 and 66 are at the same height as the side surface 32 of the rail 3 and sandwich the wheel 50 side by side in the direction in which the rail 3 extends. Will be provided. Further, the locking portion 65 is inserted into the locking groove 33 of the rail 3.
A long hole 51h extending in the vertical direction is formed in the support bracket 51, and the bolt is passed through the hole 61h of the twist prevention member 60 'and the long hole 51h of the support bracket 51, and the nut is screwed into the twist prevention member. 60 ′ is attached to the support bracket 51. Since the support bracket 51 side is a long hole, the height of the twist preventing member 60 ′ with respect to the support bracket 51 can be adjusted, and the height of the sliding portions 66, 66 is adjusted to the same height as the side surface 32 of the rail 3. it can.

With the configuration as described above, even when the movable end frame 41a is twisted around the vertical axis when the telescopic gate is opened and closed, the sliding portion 66 contacts the side surface 32 of the rail 3 to suppress twisting. be able to.
More specifically, as shown in FIG. 10 (A), when one handle 43a (for example, the handle inside the gate) attached to the moving end frame 41a is grasped and pulled rightward in FIG. The moving end frame 41a tends to be twisted counterclockwise in plan view. Therefore, as shown in FIG. 10B, the twist preventing member 60 ′ attached to the handle 43 a side (inside the gate) is inclined so that the right side thereof approaches the rail 3. If it does so, the sliding part 66 of the right side will contact | abut to the side surface 32 of the rail 3, and it can suppress that the moving end frame 41a is twisted further by the reaction force. Similarly, the twist preventing member 60 ′ attached to the other handle 43 b side (outside of the gate) is inclined so that the left side thereof approaches the rail 3. If it does so, the left sliding part 66 will contact | abut to the side surface 32 of the rail 3, and it can suppress that the moving end frame 41a is twisted further by the reaction force. Therefore, even if the flange 50 a of the wheel 50 contacts the side surface 32, strong frictional resistance does not occur, and the locking portion 65 does not contact the locking groove 33.

  In the present embodiment, since the pair of sliding portions 66 and 66 are provided with the wheel 50 interposed therebetween, even if the handle 43a of the moving end frame 41a is grasped and pulled leftward in FIG. It can suppress that the moving part 66 contact | abuts to the side surface 32 of the rail 3, and the moving end frame 41a is twisted. That is, the opening / closing operation can be smoothly performed both when opening and closing the telescopic gate.

In addition, it is preferable that a gap of about 1 mm is opened between the sliding portion 66 and the side surface 32 in a state where the moving end frame body 41a is not twisted. This is because if the sliding portion 66 and the side surface 32 are always in contact with each other, unnecessary resistance occurs when the moving end frame 41a is not twisted. Also, when the moving end frame 41a is about to be twisted, the twist is minimized.
Moreover, it is preferable to open a gap of about 3 mm between the tip of the locking part 65 and the vertical surface of the locking groove 33, and it is necessary to open a gap larger than at least the gap between the sliding part 66 and the side surface 32. If the clearance between the locking portion 65 and the locking groove 33 is smaller than the clearance between the sliding portion 66 and the side surface 32, the locking portion 65 is positioned more than the sliding portion 66 when the moving end frame 41 a is twisted. This is because the end first comes into contact with the locking groove 33.

Since the torsion prevention member 60 ′ of the present embodiment is configured by the frame 61 and the locking portion 65 to constitute a fall prevention metal fitting, the fall prevention metal fitting attached to the telescopic gate can be removed and replaced. That is, the torsion preventing member 60 'can be attached to a conventional telescopic gate door to which a fall prevention metal fitting is attached, and the telescopic gate door itself does not need to be replaced.
Moreover, since the latching | locking part 65 is provided, even if the external force which falls to an expansion-contraction gate door is added, it can prevent that an expansion-contraction gate door falls.

Also in the twist suppressing member 60 ′ of the present embodiment, the rail 3 may be a convex rail. Since the height of the sliding portion 66 can be adjusted by adjusting the attachment position of the twist preventing member 60 ', the height of the sliding portion 66 can be made the same as the folded portion 32'.
Thus, since the height of the sliding part 66 can be adjusted to the same height as the side surface of the rail by the height adjusting mechanism, it is possible to deal with rails of various shapes.

(Other embodiments)
In the above embodiment, the height adjustment mechanism is realized by forming the long hole 51h in the support bracket 51, but other mechanisms may be adopted. For example, the hole 61h formed in the frame 61 of the twist preventing member 60 may be a long hole. Further, in the twist suppressing member 60 according to the first embodiment, a mechanism that can adjust the height of the bearing portion 62 with respect to the frame 61 may be used.

  In the above-described embodiment, the twist preventing member 60 is attached only to the lower end of the moving end frame 41 a on which the handle 43 is provided. It may be attached. Normally, if the twist preventing member 60 is attached only to the moving end frame 41a, it is possible to prevent the moving end frame 41a from being twisted. However, if there is still a possibility that the other vertical frame 41 may be twisted. If the twist preventing member 60 is attached to the vertical frame body 41, the vertical frame body 41 can be prevented from being twisted.

  Moreover, in the said embodiment, although the locking part 65 was formed in the twist suppression member 60, it was made to serve also as a fall prevention metal fitting, However, It is good also as embodiment which does not provide the locking part 65. FIG. In this case, it is preferable to adopt a configuration in which the twist preventing member 60 can be attached together with the existing fall prevention metal fitting.

DESCRIPTION OF SYMBOLS 1 Suspension post | post | post | pile 2 Per door | door 3 Rail 31 Rolling surface 32 Side surface 33 Locking groove | channel 4 Telescopic gate body 41 Vertical frame body 41a Moving end frame body 43 Handle 50 Wheel 51 Support bracket 60 Twist prevention member 61 Frame 62 Bearing part 63 Side roller 65 Locking part 66 Sliding part

Claims (6)

Telescopic gates with wheels that run on rails,
A torsion suppression member having a contact portion is attached,
The contact portion is provided so as to contact the side surface of the rail ,
A telescopic gate, wherein the twist preventing member is integrally formed with a locking portion to be inserted into a locking groove of the rail . The dimension of the locking part protruding direction between the contact part and the tip of the locking part is shorter than the dimension between the side surface of the rail and the vertical surface of the locking groove. 2. The telescopic gate according to claim 1, wherein Claim 1 or 2 telescopic gates according to further comprising a height adjusting mechanism for adjusting the height relative to the wheel contact portion. A twist-inhibiting member having a pair of abutting portions is attached,
Said pair of abutment, so as to be in contact with the side surface of the rail, and, according to claim 1, 2 or 3 further characterized in that provided to sandwich the wheel side by side in a direction in which the rail extends Telescopic gate. 5. The telescopic gate according to claim 1, wherein the contact portion is a side roller. 5. The telescopic gate according to claim 1, wherein the contact portion is a sliding portion.

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