JP4659652B2 - Foldable safety fence - Google Patents

Description

  The present invention relates to a folding safety fence. The foldable safety fence of the present invention can be reduced in size during transportation and storage by restricting access to the dangerous area by assembling it so as to surround the dangerous area in use. The foldable safety fence of the present invention can be used to display the presence of dangerous areas such as inspections, repairs, and other construction sites for elevators, escalators, etc., and to limit the entry of ordinary people. The foldable safety fence according to the present invention has a small number of parts, is lightweight, can be easily folded and downsized, can be easily transported and stored, and can be easily used in a short time during use. Have

Many safety fences for restricting access to construction sites such as elevators and escalators are conventionally known. For example, Patent Document 1 discloses a safety fence provided with a fixed leg, an upper and lower telescopic leg, an inspection display screen provided between the upper and lower telescopic legs, a left and right retractable leg, a front and rear telescopic leg and the like for improving portability and storage. To do. Patent Document 2 discloses a construction safety fence formed by removably fixing a plurality of substantially A-shaped frame bodies 1 to two pipes arranged in parallel.
JP 2002-173919 A JP 2000-54330 A

  Conventional variable or foldable safety fences are generally complicated in structure and have a large weight and outer shape, so the labor and storage costs are large, and the man-hours for assembly and disassembly from the use state to the transport state and vice versa However, there were shortcomings such as long time required. Moreover, since the weight and the outer shape are large, it is inconvenient for movement by human power.

  An object of the present invention is to provide a foldable safety fence that can be folded and reduced in size during transportation and storage by restricting access to the dangerous area by assembling it so as to surround the dangerous area in use. Is to provide. In particular, the present invention provides a foldable safety fence that can be used to display the presence of dangerous areas such as inspection and repair of elevators, escalators, and other construction sites, and to limit the entry of ordinary people. is there. In addition, the present invention is a foldable type having a structure that has a small number of parts, is lightweight, can be easily folded and downsized, can be easily transported and stored, and can be easily used in a short time when used. It is to provide a safety fence. Other objects and advantages of the invention will be apparent from the following description and drawings, and from the claims.

  The foldable safety fence of the present invention includes a rectangular main frame and a sub frame formed by rigidly connecting two vertical pipes and two horizontal pipes, respectively, and two adjacent main and sub frames. A first assembly comprising a first clip connecting the vertical pipes. The first clip includes two concave portions that can be engaged with the outer periphery of the vertical pipe, and each vertical pipe is engaged with the concave portion so as to be capable of rotational displacement. The sub-frame has an outer dimension that can be accommodated in the internal space of the main frame, and can be accommodated in the internal space of the main frame while maintaining the connection state between the first clip and the two vertical pipes. is there.

  The foldable safety fence of the present invention can include the following configurations. (1) A second assembly having a shape symmetrical to the first assembly is further included, and the vertical pipes of the main frame and the vertical pipes of the subframe that are not engaged with the first clips are the second clips. It is connected by. (2) The second clip includes two concave portions that can be engaged with the outer periphery of the vertical pipe, and each vertical pipe is engaged with the concave portion so as to be capable of rotational displacement. (3) The subframe can be accommodated in the internal space of the main frame in each assembly while maintaining the connection state between the second clip and the two vertical pipes. (4) Each of the first and second assemblies includes an angle fixing tool capable of fixing an angle in a horizontal plane between the main frame and the sub frame to at least one predetermined angle. (5) The sub-frame can be accommodated in the internal space of the main frame when the angle fixing tool is released.

  (6) Each of the first and second assemblies further includes a display sheet member supported by two vertical pipes of the main or sub frame. (7) It further includes a holding pipe connectable by a third clip to a horizontal pipe above adjacent main frames or sub-frames connected by the second clip, and the holding pipe is connected to two horizontal pipes to be connected. The pipes can be fixed in a linear array. (8) The two vertical and horizontal pipes and the holding pipe of the main or sub frame of the first or second assembly have the same outer diameter. (9) The 1st thru | or 3rd clip is detachable with respect to each pipe to engage, and has compatibility mutually. (10) It can be used on construction sites such as inspection or repair of elevators or escalators.

Embodiments of the Invention

  Embodiments of the invention will be described with reference to the accompanying drawings. 1 is a perspective view of the folding safety fence according to the embodiment of the present invention in a developed state, FIG. 2 is a front view of the folding safety fence according to the embodiment of the present invention in a first use state, FIG. FIG. 4 is a right side view of the foldable safety fence of FIG. 2, and FIG. 4 is a top view of the foldable safety fence of the embodiment of the present invention in a first use state. A foldable safety fence 1 shown in FIG. 1 includes a first assembly 4 composed of a main frame 2 and a subframe 3 and a second assembly 8 composed of a main frame 6 and a subframe 7. The first assembly 4 and the second assembly 8 have a substantially symmetrical shape structure. The first assembly 4 includes a first clip 25 that connects two adjacent vertical pipes 22 and 32 of the main and sub-frames 2 and 3. Similarly, the second assembly 8 includes a first clip 65 that connects two adjacent longitudinal pipes 62, 72 of the main and sub-frames 6, 7. The external dimensions (FIG. 3) of the main frames 2 and 6 are, for example, height 760 mm × width 760 mm, and the external dimensions of the sub-frames 3 and 7 are the two vertical pipes of the main frame and 2 The inner space of the horizontal pipe of the book can be accommodated.

  The main frame 2 of the first assembly 4 is formed by rigidly connecting two vertical pipes 21 and 22 and two horizontal pipes 23 and 24 with screws or the like, and has a substantially rectangular shape as a whole. The sub-frame 3 of the first assembly 4 is formed by rigidly connecting two vertical pipes 31 and 32 and two horizontal pipes 33 and 34 with screws or the like, and the whole is substantially rectangular. Two adjacent vertical pipes 22 and 32 of the first assembly 4 are connected by upper and lower first clips 25 and 25. Similarly, the main frame 6 of the second assembly 8 is formed by rigidly connecting two vertical pipes 61 and 62 and two horizontal pipes 63 and 64, respectively, and has a substantially rectangular shape as a whole. The sub-frame 7 of the second assembly 8 is formed by rigidly connecting two vertical pipes 71 and 72 and two horizontal pipes 73 and 74, and the whole is substantially rectangular. Two adjacent vertical pipes 62 and 72 of the second assembly 8 are connected by upper and lower second clips 65 and 65.

  In the folding safety fence 1 of FIG. 1, the first assembly 4 and the second assembly 8 are arranged so that the vertical pipes 31 and 71 of the subframes 3 and 7 that are not engaged with the respective first clips 25 and 65 And the second clip 35 below. Instead of this structure, the vertical pipes 21 and 61 of the main frames 2 and 6 can be connected by the second clip 35. 1, the display sheet member 37 is supported by the two vertical pipes 21 and 22 of the main frame 2, and the display sheet is also supported by the two vertical pipes 31 and 32 of the subframe 3. The member 37 is supported. The display sheet member 37 is fixed to the two vertical pipes 21, 22, 31, and 32 by sheet fasteners 28 at the ends thereof. Although the same display sheet member can be provided in the second assembly 8, it is omitted in FIG.

  Reference numeral 77 in the lower part of the front view of FIG. Both ends of the mesh member 77 are fixed to the vertical pipes 17 and 62 of the main frame, respectively, to prevent dust from entering the construction site from below the two sub frames 3 and 7 along the floor surface. FIG. 4 is a top view of the folding safety fence according to the embodiment of the present invention in a first use state, and FIG. 5 shows the angle between the main frame and the subframe in the folding safety fence of FIG. FIG. 6 is an enlarged view of the angle fixing tool 41 for fixing to a predetermined value, and FIG. 6 is an enlarged perspective view of the angle fixing tool 41 used in the folding safety fence of the present invention. As shown in FIG. 5, the angle fixture 41 includes a fixture body 42 and a rod 44. The fixture main body 42 is rotatably supported around a pin 43 fixed to the horizontal pipe 23 of the main frame, and also supports one end of the rod 44 to be rotatable. The other end 45 of the rod 44 is engaged with the first hole 46 or the second hole 47 of the horizontal pipe 33 of the subframe. The axis of the pin 43 and the axis of one end of the rod 44 are perpendicular to each other, and the other end 45 of the rod 44 is movable in the horizontal and vertical directions.

  When the other end 45 of the rod 44 is engaged with the first hole 46, the horizontal pipe 23 of the main frame and the horizontal pipe 33 of the subframe form an angle of 90 ° in the horizontal plane, and the other end 45 of the rod 44 is When engaged with the second hole 47, the first hole 46 and the second hole 47 are arranged so that the horizontal pipe 23 of the main frame and the horizontal pipe 33 of the sub-frame form an angle of 120 ° in the horizontal plane. The By changing the position of the first hole 46 or the second hole 47, the angle between the horizontal pipe 23 of the main frame and the horizontal pipe 33 of the sub-frame can be arbitrarily set.

  FIG. 6 is a perspective view of the first clips 25 and 65. The second clip 35 has the same shape as the first clip and has compatibility. The first clip 25 is made of a hard plastic material having elasticity. As shown in FIG. 6, the first clip 25 has two half-cylindrical portions 50, 50, a central portion 57 for joining the two half-cylindrical portions 50, 50 together, and each half-cylindrical portion 50 for receiving pipes. Cylindrical recesses 55 and 55 formed therein, and inner peripheral surfaces 54 and 54 surrounding the two cylindrical recesses 55 and 55 are included. The central portion 57 includes one ends of the inner peripheral surfaces 54, 54, and the other ends of the inner peripheral surfaces 54, 54 are defined by end portions 58, 58, respectively, and between the central portion 57 and the end portions 58, 58. Insertion openings 56 and 56 are formed, respectively.

  The first clip 25 of FIG. 6 further includes peripheral grooves 59 and 59 formed by extending in the circumferential direction in the semi-cylindrical portions 50 and 50. The insertion openings 56 and 56 are slightly smaller in size than the vertical or horizontal pipe to be inserted, and the insertion openings 56 and 56 are elastically expanded to insert the vertical or horizontal pipe into the cylindrical recesses 55 and 55. Is made possible. The vertical or horizontal pipe inserted into the cylindrical recesses 55, 55 is held in the cylindrical recesses 55, 55 so as to be rotatable with respect to the inner peripheral surface 54. That is, the vertical or horizontal pipe inserted into the cylindrical recesses 55, 55 can be rotated in the cylindrical recesses 55, 55 with respect to the inner peripheral surface 54, that is, slidable with respect to the inner peripheral surface 54. Is done.

  In the first use state of the folding safety fence of FIG. 4, the main frame 2 and the sub frame 3 of the first assembly 4 make 90 ° in the horizontal plane by the rod 44 of the angle fixing tool 41. Further, the second assembly 8 having a symmetrical shape with the first assembly 4 is connected in the same manner as in FIG. That is, the vertical pipes 31 and 71 of the subframe that are not engaged with the first clips 25 and 65 of the first assembly and the second assembly are connected by the second clips 35 and 35, or The vertical pipes 21 and 61 of the main frame that are not engaged with the first clips 25 and 65 are connected by the second clip. The second clip 35 preferably has the same shape as the first clips 35 and 65 and has compatibility. Further, in the folding safety fence of FIG. 4, the holding pipe connected by the third clips 36, 36 to the horizontal pipes 33, 73 above the adjacent subframes connected by the second clips 35, 35. 11 is further provided. The holding pipe 11 fixes the two horizontal pipes 33 and 73 to be connected in a linear arrangement.

  FIG. 7 is a top view of the folding safety fence according to the embodiment of the present invention in the middle of folding, FIG. 8A is a front view of the folding safety fence of FIG. 7 in a folded state, and FIG. FIG. 9 is a side view of the foldable safety fence in a folded state conveyed by a person denoted by reference numeral 15. To change the assembled safety fence of FIG. 5 to the folding state of FIG. 7, in the first and second assemblies, the other end 45 of the rod 44 of each angle fixture 41 and the horizontal pipe are engaged. And releasing the holding pipe 11 for fixing the first assembly and the second assembly to reduce the angle in the horizontal plane between each main frame and the subframe in the first and second assemblies, and Reduce the angle between the sub-frames 33 and 73 engaged by the two clips. In the folded state of FIG. 8A, as shown in FIG. 9, the sub-frames are inserted into the main frame, and in FIG. 7, the four frames are made the thickness of two frames in the front view of FIG. 8A. .

  FIG. 10 is a horizontal cross-sectional view showing a connected state of vertical pipes in the state of FIG. 4 or FIG. 7, and FIG. 11 is a horizontal cross-sectional view showing a connected state of vertical pipes in the states of FIGS. 10 and 11, the X and Y directions indicate the same direction as the X and Y directions described in FIG. In the state before folding in FIG. 4 or 7, as shown in FIG. 10, the vertical pipes 32 and 72 of each sub-frame are aligned and arranged in the X direction with respect to the vertical pipes 22 and 62 of each main frame. On the other hand, in the folded state of FIGS. 8A to 9, as shown in FIG. 11, the vertical pipes 32 and 72 of each subframe are aligned with the vertical pipes 22 and 62 of each main frame in the Y direction.

  The foldable safety fence according to the present invention is the first assembly, wherein the sub-frame has an outer dimension to be accommodated in the internal space of the main frame, and the first clip and the two vertical pipes It can be accommodated in the internal space of the main frame while maintaining the connected state. Therefore, in use, the main frame and sub-frame can be expanded to enclose the construction site, indicating that the work is underway, and restricting the entry of people. Can be accommodated in the main frame, and the thickness of the safety fence in the folded state can be set to the thickness of the main or sub-frame, so that it can be easily transported manually and the storage space can be reduced.

  The foldable safety fence of the present invention has a main frame and a sub frame formed by connecting two vertical pipes and two horizontal pipes, respectively, and a first clip is formed by two adjacent vertical pipes of the main and sub frames. Since the pipes are connected, there are advantages such as light weight, extremely simple structure, and ready to manufacture.

The perspective view of the state which the folding-type safety fence of the Example of this invention developed. The front view of the 1st use condition of the folding-type safety fence of the Example of this invention. The right view of the foldable safety fence of FIG. The top view of the 1st use condition of the folding-type safety fence of the Example of this invention. The enlarged view seen in the arrow A direction of the universal joint in the foldable safety fence of FIG. The expansion perspective view of the free hinge used for the foldable safety fence of this invention. The top view of the folding-type safety fence in the state in the middle of folding. The front view of the folding-type safety fence in a folding completion state. The side view of the folding-type safety fence in a folding completion state. It is a side view of the folding-type safety fence of the folding state conveyed by a person. Sectional drawing which shows the connection state of the vertical pipe in the state of FIG. It is sectional drawing which shows the connection state of the vertical pipe in the state of FIG. 8A.

Explanation of symbols

  1: Foldable safety fence, 2, 6: Main frame, 4: First assembly, 3, 7: Subframe, 8: First assembly, 11: Holding pipe, 21, 22, 31, 32, 61 62, 71, 72: Vertical pipe, 24, 24, 33, 34, 63, 64, 73, 74: Horizontal pipe, 25, 65, 35, 36: Clip, 37: Display sheet, 41: Angle fixing tool , 42: fixing tool main body, 43: pin, 44: rod, 45: other end, 46: first hole, 47: second hole, 50, 50: semi-cylindrical portion, 54, 54: inner peripheral surface, 55, 55: cylindrical recess, 56, 56: insertion opening, 57: center, 58, 58: end, 59, 59: peripheral groove.

Claims (7)

A foldable safety fence,
A rectangular main frame and sub-frame formed by rigidly connecting two vertical pipes and two horizontal pipes, respectively, and a first clip connecting two adjacent vertical pipes of the main and sub-frames A first assembly comprising:
The first clip has two recesses that can be engaged with the outer periphery of the vertical pipe, and each vertical pipe is engaged with the recess so as to be able to be rotationally displaced. And a folding safety fence that can be accommodated in the internal space of the main frame while maintaining the connection between the first clip and the two vertical pipes.   A second assembly having a shape symmetrical to the first assembly is further included, and the vertical pipes of the main frame or the vertical pipes of the subframe that are not engaged with the first clips are connected by the second clip. The second clip includes two recesses engageable with the outer periphery of the vertical pipe, and each vertical pipe is engaged with the recess so as to be capable of rotational displacement, and the second clip, the two vertical pipes, The foldable safety fence according to claim 1, wherein the subframe can be accommodated in the internal space of the main frame in each assembly while maintaining the connected state.   Each of the first and second assemblies includes an angle fixing device capable of fixing an angle in a horizontal plane between the main frame and the sub frame to at least one predetermined angle, and the angle fixing device is released. The folding safety fence according to claim 1 or 2, wherein the sub-frame can be accommodated in the internal space of the main frame.   The foldable safety fence according to any one of claims 1 to 3, wherein each of the first and second assemblies further includes a display sheet member supported by two vertical pipes of a main or sub frame.   A holding pipe connectable by a third clip to a horizontal pipe above adjacent main frames or sub-frames connected by the second clip, and the holding pipe includes two horizontal pipes to be connected. The foldable safety fence according to any one of claims 2 to 4, which is fixed to a linear array.   The two vertical and horizontal pipes and the holding pipe of the main or sub-frame of the first or second assembly have the same outer diameter, and the first to third clips are attached to and detached from each engaging pipe. 6. The foldable safety fence according to claim 5, which is free and compatible with each other.   The foldable safety fence according to any one of claims 1 to 6, wherein the foldable safety fence can be used at a construction site of an elevator or an escalator.

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