JP2004270365A - Open/close type bar unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To simply install a cone or the like, and to facilitate handling. <P>SOLUTION: An open/close type bar unit is composed of a mounting body 1, a rotary mechanism 2 fixed to the body 1 and a bar body 3 installed to the mechanism 2. Three plates are connected in a bendable manner on a substantially parallel line to the axial center of the body 1 in the mechanism 2. A first plate 20 is fixed to the body 1, a second plate 23 in succession to the plate 20 is mounted rotatably at the front end of the plate 20 through a first shaft pin 21 only in the forward direction and a third plate 26 is secured rotatably at the front end of the plate 23 through a second shaft pin 24 only in the opposite direction. The root of the bar body 3 is fixed to the plate 26, and coil springs 22 and 25 set up to the pin 21 and the pin 24 function so as to return the plate 23 and the plate 26 at specified places. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
[Industrial applications]
The present invention relates to an openable / closable bar unit attached to a cone, a single pipe scaffold, or the like.
[0002]
[Prior art]
As is well known, a cone is installed on the road at the time of construction work or road construction, so that vehicles and pedestrians can recognize the construction area. Then, adjacent cones are connected by a cone bar so that a person other than the worker does not enter the work area. This cone bar is provided with ring members at both ends, and this ring member is fitted to the cone head and fixed, so when the worker enters and exits the work area, the bar must be removed or straddled each time. Must. Further, there are various improved inventions of cone bars (for example, see Patent Document 1), but a retractable cone bar cannot be found. There is also a temporary gate for temporarily enclosing a work area (for example, see Patent Document 2). However, since the temporary gate is formed like a foldable accordion door and has a relatively large structure, there is a problem that handling such as transportation and installation is difficult.
[0003]
[Patent Document 1]
Japanese Patent Application Laid-Open No. 2000-34712 [Patent Document 2]
JP-A-8-165873
[Problems to be solved by the invention]
The present invention has been made in view of the above-described problems, and has as its object to provide an openable / closable bar unit that can be easily installed on a cone or a single-tube scaffold and that can be easily handled.
[0005]
[Means for Solving the Problems]
The opening / closing bar unit of the present invention includes a mounting body, a rotating mechanism fixed to the mounting body, and a bar body provided on the rotating mechanism, and the rotating mechanism is substantially orthogonal to the axis of the mounting body. The bar main body can be rotated forward and reverse in the plane, and the bar main body is returned to a fixed position by an elastic body provided in a rotating mechanism.
[0006]
Preferably, the rotating mechanism is configured to foldably connect the three plates on a line substantially parallel to the axis of the mounting body, wherein the first plate is fixed to the mounting body, The subsequent second plate is rotatably attached to the tip of the first plate only through the first shaft pin in the forward direction, and the third plate is inverted through the second shaft pin at the tip of the second plate. The third plate is fixed so that the root of the bar body is fixed to the third plate, and a coil spring provided on the first shaft pin and the second shaft pin connects the second plate and the third plate. Function to return to the home position.
[0007]
More preferably, the mounting body comprises a sleeve-like member.
[0008]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an embodiment of the openable bar unit according to the present invention will be described in detail with reference to the accompanying drawings.
[0009]
FIG. 1 is an explanatory diagram showing an openable / closable bar unit, where A is a perspective view and B is a plan view. The openable / closable bar unit includes a mounting body 1, a rotating mechanism 2 fixed to the mounting body 1, and a bar body 3 provided on the rotating mechanism 2, and the rotating mechanism 2 corrects the bar body 3. Enable rotation in the opposite direction. Hereinafter, each component will be described in detail. The mounting body 1 is composed of a first sleeve 10 having a large diameter and a second sleeve 11 having a small diameter. One piece portion 20 a of the angle-shaped first plate 20 is attached to the first sleeve 10 via a joint member 27. ing.
[0010]
The broken line of the first plate is attached in parallel to the axis of the mounting main body 1, and one side edge of the other piece 20 b of the first plate 20 is connected to the second plate 23 via the first shaft pin 21. Is pivotally supported, and the second plate 23 is rotatable only in the forward direction about the first shaft pin 21. The first shaft pin 21 is provided with a coil spring 22. At a regular time, the other piece 20b of the first plate 20 and the second plate 23 are opposed to each other in parallel.
[0011]
On the other side edge of the second plate 23, one side edge of a third plate 26 is supported via a second shaft pin 24, and the third plate 26 is inverted around the second shaft pin 24. It can rotate only in the direction. The second shaft pin 24 is also provided with a coil spring 25, and the second plate 23 and the third plate 26 are positioned at right angles at regular times.
[0012]
Further, the third plate 26 is provided with a vertically extending sleeve-shaped bar holding portion 30. The bar main body 3 is inserted into the bar holding portion 30, and the bar holding portion 30 is attached by a mounting bracket 31 such as a bolt. Is fixed to the bar body 3. That is, the bar main body 3 can be replaced with a short one or a long one according to the use state.
[0013]
Next, the operation when rotating the bar body 3 will be described. FIGS. 2A and 2B are explanatory diagrams showing the rotating state of the openable bar unit, where A is a plan view at a regular time, and B and C are plan views at a rotating time. By rotating the bar body 3 in the counterclockwise direction (positive direction) from the state shown in FIG. 2A, the second plate 23 is rotated counterclockwise (positively) about the first shaft pin 21 as shown in FIG. 2B. Direction), and when the rotation of the bar body 3 is released, the state returns to the state shown in FIG. Here, the second plate 23 is configured to be rotatable only in the counterclockwise direction (forward direction) and not to rotate in the clockwise direction (reverse direction).
[0014]
By rotating the bar main body 3 clockwise (reverse direction) from the state shown in FIG. 2A, the third plate 26 is rotated clockwise around the second shaft pin 24 (see FIG. 2C). When the rotation of the bar body 3 is released and the rotation of the bar body 3 is released, the state returns to the state shown in FIG. Here, the third plate 26 is configured to be rotatable only in the clockwise direction (reverse direction) and not to rotate in the counterclockwise direction (forward direction).
[0015]
FIG. 3 shows a perspective view in which the openable bar unit is attached to the cone 100 head. As shown in FIG. 3A, the work area can be surrounded by preparing two cones 100 each having the openable bar unit attached to the head and abutting the tips of the bar bodies 3, 3 '. Then, when entering and exiting from the work area, as shown in FIGS. 3B and 3C, the bar bodies 3 and 3 'are rotated to enable entry and exit from the work area. FIG. 3B shows a state in which the bar bodies 3, 3 'are rotated in one direction, and FIG. 3C shows a state in which the bar bodies 3, 3' are rotated in the other direction.
[0016]
FIG. 4 shows a usage mode of the openable bar unit. As shown in FIG. 4A, the cone 100 having a cut head has a circular opening 101. By inserting the second sleeve 11 of the opening / closing bar unit into the opening 101, the opening / closing bar is opened. The unit can be mounted on the cone 100 head. Further, a display plate 105 for preventing danger can be attached to the first sleeve 10 of the openable bar unit. Further, as shown in FIG. 4B, a ring member 201 can be attached to a single pipe 200 such as a scaffold, and the second sleeve 11 of the openable / closable bar unit can be inserted and attached to the ring member 201. Further, although not shown, a warning light and the like can also be attached to the first sleeve 10.
[0017]
【The invention's effect】
According to the present invention, since the bar main body is rotatable in the forward and reverse directions, the operator can enter and exit the work area without having to remove the bar main body as in the related art. Further, after the bar body is rotated to enter and exit the work area, the elastic urging force of the coil spring returns the operator to the state before the rotation without the trouble of returning the bar body. In addition, since this openable bar unit can be installed not only on a cone but also on a single pipe scaffold, a gate support, or the like, there is an advantage that the range of application is wide. In addition, a display plate, a warning light, and the like can be installed above the openable bar unit.
[Brief description of the drawings]
FIG. 1 is an explanatory diagram showing one embodiment of the present invention.
FIG. 2 is an explanatory diagram showing a rotating state of the present invention.
FIG. 3 is a perspective view showing a state where the present invention is attached to a cone.
FIG. 4 is an explanatory diagram showing a use mode of the present invention.
[Explanation of symbols]
REFERENCE SIGNS LIST 1 mounting body 2 rotating mechanism 3 bar body 10 first sleeve 11 second sleeve 20 first plate 21 first shaft pin 22 coil spring 23 second plate 24 second shaft pin 25 coil spring 26 third plate

Claims (3)

An attachment body, a rotation mechanism fixed to the attachment body, and a bar body provided on the rotation mechanism, wherein the rotation mechanism is arranged such that the rotation of the bar body is substantially perpendicular to an axis of the attachment body. , And the bar body returns to a fixed position with an elastic body provided in the rotating mechanism. The rotation mechanism is configured to bendably connect the three plates on a line substantially parallel to the axis of the mounting body, wherein the first plate is fixed to the mounting body, A subsequent second plate is rotatably attached to the tip of the first plate via the first shaft pin only in the forward direction, and the third plate is inverted via the second shaft pin at the tip of the second plate. The third plate has a bar body fixed to the third plate, and a coil spring provided on the first shaft pin and the second shaft pin is attached to the second plate and the third plate. The rotary bar unit according to claim 1, wherein the rotary bar unit functions to return the plate to a home position. The rotary bar unit according to claim 1, wherein the mounting body is formed of a sleeve-shaped member.

Images