JP6192117B2 - Self-supporting moving fence - Google Patents

Description

  This invention is for example prevention of shattering of generated materials in pavement shaving, road marking work, road surface cleaning work, spraying work, planting, pruning, weeding work, slope work on mountain roads and coastal roads in road construction, For preventing sparks and swarf from being shattered during cutting and dismantling of buildings and steel products, for blindfolding in a safe place such as a serious injury in a traffic accident, for temporarily evacuating a disaster evacuation site, or for other temporary work such as construction sites The present invention relates to a self-supporting moving fence for blindfolding and prevention of outsider intrusion.

Conventionally, as a partition for the above-mentioned use, for traffic vehicles that come and go, one side traffic is restricted, and a plywood, blue sheet, or net is given to workers to prevent scattering, or the net frame 2 surface, 3 Often, a foldable surface is used to prevent scattering.
Also, as the folding board or fence used for the above-mentioned purpose, as disclosed in Patent Documents 1 and 2, those which are provided with casters or anti-slip legs that protrude forward and backward of the fence and are intended to be stable and independent are known. It is.

JP-A-2005-139817 JP 2010-281148 A

However, although the thing of the said patent document 1 is a folding type and is easy to convey and manage, since the leg always protrudes in the front-rear direction, the part takes a large front-rear width according to the length of the leg part, and therefore it is transported. In addition, there is a disadvantage that a large size and space are required for storage.
In addition, in Patent Document 2, two fences are slid and overlapped in the direction of the fence frame, and the leg portion can be folded to the lower end side of the fence frame, so that the storage space is small and the handling is easy. However, with this type, it is necessary to secure the fence by other workers when opening and closing the front and rear legs for folding and pulling out (one person is difficult to work). In addition to poor workability because it must be opened and closed separately, support for the fence's independence depends exclusively on the leg and its pivot axis, so the circumference of the pivot fulcrum is thicker and less loose. Therefore, high processing accuracy is required.

In order to solve the above problems, the self-supporting movable fence according to the present invention firstly attaches leg frames 8 to the lower ends of at least the left and right sides of a rectangular or square body frame 2 so as to be horizontally rotatable. A caster 7 that protrudes downward is attached, and the leg frame 8 is integrated with the structure, and is stable in an open state in an intersecting direction with respect to the main body frame 2 and in an inverted T shape in a side view. At least one of the front and rear sides of the plurality of leg frames 8 projecting forward and backward of the main body frame 2 in the above-mentioned self- supporting posture, with the self-standing posture held and closed along the direction of the main body frame 2 Are connected by a connecting link 12 along the direction of the main body frame 2, and each leg frame 8 is a mechanism that opens and closes and rotates in conjunction with each other.

Second, support between the main body frame 2 and the leg frame 8 or the connecting link 12, as the lower end along the rotation of the leg frame 8 is swung in an arc shape in plan view, which is inclined downward outwardly The mechanism is characterized in that it is connected by a rod 14, and the support rod 14 is a mechanism for reinforcing the self-standing posture of the main body frame 2 and a guide for opening and closing the leg frame 8.

Thirdly, linked to at least two possible to the left-right direction folding the body frame 2 is provided a connecting link 12 to the rear side, the auxiliary end portions of the connecting links 12 on the rear side of the connecting portion of the body frame 2 The mechanism is characterized in that it is connected by a link 36, and the main frame 2 is folded and opened to the front side so that the leg frame 8 rotates in conjunction with the main frame 2 and automatically opens and closes the main frame 2.

Fourth, the upper end of the body frame 2, an upright or before傾又holds the backward tilting state, rotatable auxiliary frame 3 consisting of a rectangular frame of the horizontal rotatable folded downwardly on either side of the front and rear It is characterized by being attached to.

Fifth , the rotation fulcrum 16 on the upper end side of the support rod 14 and the rotation fulcrum 13 on the leg frame 8 side are arranged on the same axis on the body frame 2, and the rotation fulcrum 13 on the lower end side of the support rod 14. Is arranged on the same axis as the connection fulcrum between the leg frame 8 and the connection link 12.

The present invention configured as described above has the effects as described above.
(1) Since the leg frame with casters attached to the lower end of the main body frame is integrated with the front and rear, the pair of casters can be simultaneously rotated by one operation to change the main body frame to a self-supporting / retracting posture. There is an advantage that can be done alone.
Further, by connecting the leg frames with the connecting links, it is possible to rotate all the leg frames of at least one main body frame by one operation to change to a self-standing posture or a retracted posture.

(2) The lower part of the support rod with the main body frame side as the upper fulcrum is connected to the leg frame side in a stable and swingable manner, so that the vertical posture of the main body frame and smooth rotation guidance of the leg frame are ensured. Therefore, there is no need to thicken or precisely machine the pivoting shaft or bearing of the leg frame in order to hold the standing posture firmly.

(3) When at least two main body frames are connected side by side, the left and right widths of the fence can be amplified, and two main body frames can be connected by connecting adjacent ends of the connection links of both main body frames with auxiliary links. Since all the leg frames are opened and closed simultaneously with the folding opening and closing operation at the connecting portion, the operability is greatly improved.

(4) By providing an auxiliary frame that can be tilted back and forth at the upper end of the main body frame, the effective area of the fence can be increased, and it can be set in a tilted posture, so that it can catch scattered objects, wind protection, sun protection, Blindfolding is performed more effectively.

(5) Since the rotation fulcrum between the upper part of the support rod and the leg frame and the connection (rotation) fulcrum between the lower part of the support rod and the connection link on the leg frame side are respectively arranged on the same axis. The leg frame and the connecting link can be opened and closed and folded smoothly and reliably.

It is a whole front view which shows the expansion | deployment installation state of the fence of this invention. It is also a plan view. Similarly, it is a right side view. It is a right side rear perspective view which shows the final folding state of the fence. It is a right side rear perspective view which shows the attachment part of the leg part of the same fence, a connection link, and a support rod. It is a perspective view which shows the mechanism of the extension fixing | fixed part in the back surface between the two fence main body frames connected.

  1 to 6 show an embodiment of the present invention, and the fence shown in FIGS. 1 to 3 connects two main body frames 2 in the left-right direction, and can be pivoted back and forth at the top of each main body frame 2. The expansion | deployment use state which fixed the connected auxiliary | assistant frame 3 in the forward-tilt state is shown.

  The main body frame 2 is made of, for example, an aluminum extruded shape member having a channel-shaped cross section, FRP, or other molding material, and is formed integrally or by assembly into a horizontally long rectangle (or a square shape) of about 1500 × 1250 mm as a whole. A transverse beam 4 is installed and reinforced at an intermediate position in the vertical direction of the main body frame 2. A vertical reinforcing rod 5 is attached to the intermediate position between the horizontal beam 4 and the upper frame in the horizontal direction. In the frame of the main body frame 2, a protective sheet 6 made of a transparent net made of resin, metal, or fiber is stretched.

  On the bottom side of the lower frame of the main body frame 2, a leg frame 8 with a caster 7 having a plate shape or a box shape and protruding at both ends of the fence 1 is pivoted horizontally to the left and right sides via a fulcrum shaft 9. It is installed freely. The caster 7 is a caster with a lock device (not shown) for locking the rotation, and is attached to the leg frame 8 via a fulcrum shaft 11 so as to be horizontally rotatable as shown in FIG.

  Further, the leg frame 8 is folded so that the left and right leg frames 8 turn 90 ° from one direction perpendicular to the main body frame 2 toward one side and approach the main body frame 2 or partly or entirely overlap. As shown in FIG. 3, the connecting link 12 in the left-right direction is connected by a fulcrum shaft 13 (see FIGS. 3 and 5).

  Further, between the fulcrum shaft 13 of each leg frame 8 and the connecting link 12 and the reinforcing rod 5 of the main body frame 2, the leg frame 8 is in an open leg state (the fence 1 is in a self-supporting state), and the fence 1 is self-supporting. 4 and 5 are connected fulcrum shafts on the reinforcing rod 5 side (respective fulcrum shafts 9, 11, 13). Will be described later in detail.)

  The upper end of the main body frame 2 can be folded up by rotating downward to either the front or rear side so that the standing state can be maintained in an upright, forwardly inclined, or backwardly inclined state, for example, about 1500 × 300 mm. An auxiliary frame 3 (having the same width as the main body frame 2) made of a horizontally long rectangular frame is attached via a hinge 17. The embodiment shown in the figure has a structure in which it is fixed in a forward tilting posture and folded backward, and a set bolt 18 attached downward to a mounting frame 3a having a channel-like cross section at the lower end of the auxiliary frame 3, and a main body frame 2 is a mechanism that can be tightened in a forward inclined posture by a screw hole 19 formed in the upper frame.

  The set bolt 18 may be simply inserted into the mounting frame 3a and screwed into the screw hole 19 to fasten the auxiliary frame 3 at a certain angle. However, the set bolt 18 can be freely rotated on the mounting frame 3a. By restricting the movement in the axial direction, the set bolt 18 and the screw hole 19 can be configured in a jack shape, and the auxiliary frame 3 can be set to be inclined at an arbitrary angle.

  A vertical reinforcing bar 21 is provided integrally or attached at the center of the auxiliary frame 3 in the left-right direction, and a protective sheet 6 similar to the main body frame 2 is stretched on the front side. An engaging claw 22 having an angled cross section is attached to the center of the upper end, and the engaging claw 22 can be engaged and disengaged with a thumbscrew 25 or the like on the back side of the reinforcing bar 21 while the auxiliary frame 3 is folded to the back side of the fence. A locking plate 23 that is locked to and fastened to is fastened as a locking tool.

  In this embodiment, as shown in FIGS. 1, 2, 4 and 6, two fences 1 are connected to each other so that the vertical frames of the main body frame 2 can be folded and rotated by a hinge 24 toward the front side. 1 to 3, the fence can be used with the reinforcing frame 3 tilted forward and extended in a straight line in the left-right direction. The auxiliary frame 3 is folded to the back side. Folded to the front side by the hinge 24 in a state of being locked by the locking tool 23, and folded and conveyed in a state where the two main body frames 2 are locked by the clamp 26 provided on the outer frame of each main body frame 2. Can be stored.

  In addition, the two fences 1 are linearly extended as described above to stably use and maintain a self-supporting state, as shown in FIG. 6, as shown in FIG. , 2 is provided with an extension fixture 27. The extension fixture 27 includes a rail-like fixing plate 28 having a C-shaped cross-section or a T-shaped cross-sectional space 28a facing the proximal end of the transverse beam 4 of each main body frame 2 in the left-right direction, and the left-right direction of the fixing plate 28. A plate-like slider 29a that is loosely fitted in the space section and slides left and right, and a presser plate 29b that is outside the space section and slides left and right together with the slider 29a and is fastened to the fixed plate 28 with a thumbscrew 31. I have.

  The slider 29a is slid between the stoppers 32, 32 projecting from the fixed plate 28, and is slid to one stop position (left side in FIG. 6 in the illustrated example) and tightened by the thumbscrew 31. By doing so, the two fences are fixed in a linearly extended state, and the fixed state is released in a state in which the two fences are slid to the other (right side of the back surface) and become a free state that can be folded or bent. .

  In order to enable switching between the fixed state and the released state by left and right slides, assuming that the length of the slider 29a and the holding plate 29b is L, the length to the connection center between the stopper 32 on the left side of FIG. The length from the connection center to the right side stopper 32 is set to be approximately the same as (or slightly less than) the length of the slider 29a. Reference numeral 33 denotes a bracket having an angled section for attaching the fixing plate 28 to each transverse beam 4.

  Further, the two fences 1 and 1 connected as described above are folded and opened, and in the extended state, the leg frame 8 intersects the fence 1 in an orthogonal direction as shown in FIGS. In the folded state, the leg frame 8 also employs a mechanism that automatically folds along the fence 1 along the outside in the folded state (the back side in the extended state). 4 and 5, the upper surface of the leg frame 8 has an angled shape that comes into contact with the main body frame 2 and stops when the leg frame 8 is opened in a direction orthogonal to the main body frame 2 from the folded state. A stopper 34 is projected.

Next, the interlocking mechanism that opens and closes the leg frame 8 as the fence 1 is folded and extended will be described in detail.
As shown in FIGS. 2 and 4, the connecting links 12 of the two fences 1 are connected to each other via auxiliary connecting links 37 at the rear of the connecting portion of the fence 1 via connecting fulcrums 37. As a result, after the auxiliary frame 3 is folded backward in advance from the state shown in FIG. 2 and then the left and right fences 1 are folded and turned in the direction of the arrow a toward the front side, they are connected by the auxiliary link 36. The left and right connecting links rotate the connecting fulcrum 13 of each leg frame 8 in the direction of arrow b (inward direction in FIG. 2), and fold and rotate each connecting link 12 along the main body frame 2. At the same time, each leg frame 8 is also rotated in the direction of arrow b in FIG. 2 by the connecting fulcrums 9 and 13, and at least a part of the leg frame 8 is moved along the main body frame 2 as shown in FIG. 2 is folded and rotated so as to be inserted into the lower part of 2.

  When the left and right fences 1 are extended and rotated in the direction of the arrow c from the folded state of FIG. 4, the connecting link 12 and the leg frame 8 are rotated in the opposite direction to the arrows a and b (the direction of the arrow d in FIG. 4). To return to the open state.

  At this time, the support rod 14 also rotates while the lower connection fulcrum 13 is twisted and rotated in the direction of the arrow b around the upper connection fulcrum 16 to guide the folding rotation of the connection link 12 and the leg frame 8. As apparent from this operation, the support rod 14 has a function of guiding the opening / closing rotation of the connecting link 12 and the leg frame 8 in addition to supporting the self-standing state of the fence 1 on the back side when the fence 1 is self-supporting. .

In order to smoothly perform the operation at the time of opening and closing, the connection fulcrums 9, 13, and 16 are arranged in the state shown in FIG. In other words concatenated right fence, leftward the connecting fulcrum 9 and the widthwise center O ₂ at a position (right side in the closed state) ahead longitudinal center O ₁ of the leg frame 8 of the leg frame 8 (the front in the closed state) The upper connection fulcrum 16 of the support rod 14 is set at the same position as the connection fulcrum 9 in plan view.

The lower connection point (13) of the connecting link 12 and the leg frame 8 and support rods 14 is a right side (a closed state from the widthwise center O ₂ at a position (left side in the closed state) than the central longitudinal O ₁ of the leg frame 8 rearward It is arranged at the rear) position.

  When the two fences 1 are connected to each other, the fulcrum 9, 13, 16 is arranged symmetrically as shown in FIG. The movement is performed smoothly, and the expected “open” and “closed” states are maintained.

  Note that the two connected fences 1 are not limited to the two open / closed states described above, but may be used in the open state in the middle of the fence. Interference can be prevented by changing the tilt angle so that they do not interfere with each other or by setting the tilt angles of both auxiliary frames 3 to be different.

  In the said Example, although the case where it used by connecting with two fences left and right which attached the auxiliary | assistant frame 3 was used, the thing which set the auxiliary | assistant frame 3 in the upright state, or what does not provide the auxiliary | assistant frame 3, The fence can be used by being bent in an L shape in plan view, and further, three or four fences can be combined and connected, and can be freely bent into a U shape or other shapes. In these modes of use, it is possible to use a part or all of a fence that does not connect the connecting links 12 for linking the leg frames 8 together when the fence is folded, or does not provide the connecting links 12 themselves.

  In the above embodiment, the support rod 14 is connected to the connecting fulcrums 16 and 13 by providing horizontal plates 14a and 14b at the upper and lower ends in order to make the rotation of the support rod 14 itself smooth. The plates 14a and 14b may be attached to the support rod 14 with screws or the like. In addition, the support rod 14 and the upper and lower connecting fulcrums 16 and 13 can be connected via a universal bearing, a ball joint, or a ball bearing (all not shown).

DESCRIPTION OF SYMBOLS 1 Fence 2 Main body frame 3 Auxiliary frame 4 Horizontal beam 6 Protective sheet 7 Caster 8 Leg frame 9, 13, 16, 37 Supporting shaft (connection supporting point)
12 Connecting link 14 Support rod 17 Hinge 18 Set bolt 19 Screw hole 24 Hinge 26 Clamp 27 Extension fixture 36 Auxiliary link

Claims (5)

Mounting each rectangular or square main body frame (2) leg frame (8) to at least the left and right sides of the lower end of the horizontal rotatably, and attaching a caster (7) projecting downward into the leg frame (8), the upper The leg frame (8) has an integral structure and maintains a stable self-supporting posture in an open state so as to be an inverted T-shape in a crossing direction with respect to the main body frame (2), In a self-supporting movable fence that is retracted in a closed state along the direction of the main body frame (2), at least one of the front and rear sides of the plurality of leg frames (8) that protrudes forward and rearward of the main body frame (2) in the self-standing posture Is a self-supporting movable fence in which the leg frames (8) are linked to each other along the direction of the main body frame (2) and the leg frames (8) are opened and closed in conjunction with each other . The body frame (2) and the leg frame (8) or the connecting link (12) face outward so that the lower end swings in an arc shape in plan view along the rotation of the leg frame (8). connected by downward inclined support rod (14), in claim 1 in which the mechanism for reinforcing the self-supporting posture of the support rod (14) guides the rotation opening and closing of the leg frame (8) by the body frame (2) The self-supporting movable fence described. At least two main body frames (2) provided with a connecting link (12) on the back side are connected in a foldable left and right direction, and the end of the connecting link (12) on the back side of the connecting portion of the main body frame (2) The parts are connected to each other by an auxiliary link (36), and the main body frame (2) is folded and opened to the front side so that the leg frame (8) rotates in conjunction with the main body frame (2) automatically. The self-supporting movable fence according to claim 1 or 2 , wherein the mechanism is configured to open and close. At the upper end of the main body frame (2), the auxiliary frame (3) is held in an upright, forward-tilted or backward-tilted state, and can be folded and folded downward on either the front or back side, and it can be rotated horizontally. The self-supporting movable fence according to any one of claims 1 to 3 , wherein the fence is attached to the fence. The support fulcrum (16) on the upper end side of the support rod (14) and the rotation fulcrum (13) on the leg frame (8) side are arranged on the same axis on the body frame (2), and the support rod (14) The self-moving fence according to any one of claims 2 to 4 , wherein a pivotal fulcrum (13) on the lower end side of the frame is disposed on the same axis as the coupling fulcrum of the leg frame (8) and the coupling link (12). .

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