Fall prevention handrail

Abstract

To provide a fall prevention handrail that can prevent fall accidents and has improved durability.SOLUTION: A fall prevention handrail 1 comprises a handrail portion 2 including a pair of outer frame portions 3 and a rod-shaped horizontal piece 10 disposed horizontally between upper parts of the pair of outer frame portions 3. Each outer frame portion 3 consists of a rod-shaped inclined piece 4 and a vertical piece 5. The vertical piece 5 is suspended from a lower end of the inclined piece 4 that is inclined toward a floor surface F side in a side view to form an L-shape in the side view. The vertical piece 5 has, at its middle portion, a rotating portion 12 having a rotating shaft 6 that allows the handrail portion 2 to rotate freely relative to a base A, an energizing portion 17 that returns the handrail portion 2 rotated downward around the rotating shaft 6 to an upward position, and an upper regulating portion 18 that restricts upward rotation of the handrail portion 2. A lower end side of the vertical piece 5 is a downward regulating portion 20 in which the handrail portion 2 rotated downward abuts against a base A side to restrict rotation.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a handrail for preventing falls on a balcony, which prevents infants and children from falling off the balcony. [Background technology]

[0002] There have been many accidents in the past where infants and children have fallen from balconies, resulting in serious injury or death. Examples of fall accidents include children using objects placed on the balcony as a foothold to climb over the railing and fall, or grabbing onto the railing and falling forward. As seen in the examples above, existing handrails and fences alone have limitations in preventing infants and children from falling. Therefore, it is important to reduce the risk of falls by adding new handrails and fences that can be expected to prevent falls to existing handrails and fences.

[0003] A technology relating to a fall prevention fence for preventing falls like this is disclosed, for example, in Patent Document 1. According to this technology, the fall prevention fence cannot move, but is tilted in a safe direction and has the function of allowing futons to be hung out to dry.

[0004] In addition, to reduce the risk of falls, it is essential to have movable handrails so that people can fall in a safe direction.

[0005] Therefore, a technology relating to the movement of handrails (safety fences) is disclosed, for example, in Patent Document 2. According to this technology, a main axis is provided in an existing handrail, and a safety fence extending upward from the axis is rotated or moved up and down by an attached spring, and the structure is such that when the handrail (safety fence) is grabbed, the safety fence falls inward, making it difficult to climb over. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Japanese Patent Application Publication No. 11-140970 [Patent Document 2] Japanese Patent Application Laid-Open No. 2001-140335 Summary of the Invention [Problem to be solved by the invention]

[0007] It is true that the technology disclosed in Patent Document 2 allows the safety fence to rotate or move up and down, which is effective in preventing falls. However, because the safety fence is moved by the main shaft supported at the lower end, once the safety fence has rotated to the lower stopping position, excessive moment is concentrated around the periphery of the main shaft depending on the length of the safety fence, which poses a problem for the durability of the safety fence.

[0008] The present invention has been made in view of the above circumstances, and aims to provide a fall prevention handrail that makes it possible to prevent falls and has improved durability. [Means for solving the problem]

[0009] In order to achieve the above object, the present invention provides the following techniques.

[0010] The invention of claim 1 aims to provide a fall-prevention handrail that is arranged on top of a base that constitutes a protective fence for preventing falls outward from the floor of a balcony or roof, the handrail portion being composed of a pair of outer frame portions and a rod-shaped horizontal piece placed horizontally between the upper parts of the pair of outer frame portions, the outer frame portion being made up of rod-shaped inclined pieces and vertical pieces, the inclined pieces and the vertical pieces being formed in a U shape in side view by hanging the vertical pieces from the lower ends of the inclined pieces that are inclined towards the floor in side view, the vertical pieces being formed at their midpoints with a rotating part having a rotating shaft that allows the handrail portion to rotate freely relative to the base, a biasing part that returns the handrail portion that has been rotated downward around the rotating shaft to its upward direction, and an upward restricting part that restricts the upward rotation of the handrail portion, and the lower end side of the vertical piece is a downward restricting part that restricts the rotation of the handrail portion that has been rotated downward by abutting against the base side.

[0011] The invention according to claim 2 aims to provide the fall prevention handrail according to claim 1, characterized in that the upper restriction portion is formed above the rotating portion.

[0012] The invention according to claim 3 provides the fall prevention handrail according to claim 1 or 2, characterized in that the biasing portion is formed above the upper restriction portion.

[0013] The invention according to claim 4 provides the fall prevention handrail according to claim 1 or 2, characterized in that the biasing portion is formed below the rotating portion.

[0014] The invention of claim 5 aims to provide a fall prevention handrail as described in claim 2, characterized in that an alarm part is formed at the contact point between the downward restriction part and the base side to notify of contact. [Effects of the Invention]

[0015] According to the invention of claim 1, there is provided a handrail disposed on the upper part of a base that constitutes a protective fence for preventing falls from the floor of a balcony or roof to the outside, the handrail part being composed of a pair of outer frame parts and a rod-shaped horizontal piece placed horizontally between the upper parts of the pair of outer frame parts, the outer frame parts being composed of rod-shaped inclined pieces and vertical pieces, the inclined pieces and vertical pieces being formed in a letter V shape in side view by hanging the vertical piece from the lower end of the inclined piece that is inclined towards the floor surface in side view, and the vertical piece allowing the handrail part to be rotated freely with respect to the base body. The middle part of the structure is provided with a rotating part having a rotating shaft, a biasing part that returns the handrail part that has been rotated downward around the rotating shaft to its upward position, and an upper regulating part that regulates the upward rotation of the handrail part.The lower end side of the vertical piece is a downward regulating part that regulates the rotation of the handrail part that has been rotated downward by abutting against the base side, making it difficult to climb over the handrail.Furthermore, by arranging the rotating shaft in the middle part of the vertical piece of the outer frame part that is U-shaped when viewed from the side, durability can be maintained even when the structure is moved repeatedly.

[0016] According to the invention of claim 2, the upper restricting portion is formed above the rotating portion, so that the center of gravity is stabilized and durability can be maintained even when a load is applied.

[0017] According to the invention of claim 3, the biasing portion is formed above the upper restricting portion, so that bending of the handrail is stable and durability can be maintained.

[0018] According to the invention of claim 4, the biasing portion is formed below the rotating portion, so that the load on the rotating portion is reduced, and durability can be maintained.

[0019] According to the invention described in claim 5, by forming an alarm section at the contact point between the downward regulating section and the base side to notify of contact, contact can be detected in real time and an audible warning can be issued, thereby preventing falls from occurring at an early stage. [Brief explanation of the drawings]

[0020] [Figure 1] FIG. 1 is a perspective view of a safety fence equipped with a fall prevention handrail according to this embodiment. [Figure 2] 10 is a perspective side view of a fall prevention handrail in which the biasing portion and the upper regulating portion are arranged above the rotating portion. FIG. [Figure 3] FIG. 4 is a simplified plan cross-sectional view showing a rotating portion. [Figure 4] FIG. 10 is a rear view of a safety fence equipped with a fall prevention handrail according to this embodiment. [Figure 5] FIG. 10 is an oblique view of a safety fence equipped with another fall prevention handrail according to this embodiment. [Figure 6] FIG. 10 is a perspective side view of a fall prevention handrail in which a biasing portion is disposed below. DETAILED DESCRIPTION OF THE INVENTION

[0021] The gist of the fall prevention handrail according to an embodiment of the present invention is that it is a handrail that is arranged on top of a base that constitutes a protective fence for preventing falls outward from the floor of a balcony or roof, and the handrail portion is made up of a pair of outer frame portions and a rod-shaped horizontal piece that is placed horizontally between the top of the pair of outer frame portions, and the outer frame portion is made up of rod-shaped inclined pieces and vertical pieces, and the inclined pieces and vertical pieces are formed in a U shape in side view by hanging the vertical piece from the lower end of the inclined piece that is inclined towards the floor in side view, and the vertical piece has at its midpoint a rotating part that has a rotating shaft that allows the handrail portion to rotate freely relative to the base, a biasing part that returns the handrail portion that has been rotated downward around the rotating shaft to its upward direction, and an upper restricting part that restricts the upward rotation of the handrail portion, and the lower end side of the vertical piece is a downward restricting part that abuts the handrail portion that has been rotated downward against the base side to restrict the rotation. In other words, the aim is to provide a fall prevention handrail that not only makes it possible to prevent falls, but also maintains its durability even when moved repeatedly by adding a rotating part by arranging a rotating shaft in the middle of the vertical piece of the outer frame that is L-shaped when viewed from the side.

[0022] The fall prevention handrail 1 that is the subject of this invention is a handrail 1 that is arranged on top of a base A that constitutes a protective fence to prevent falls from a balcony B or a rooftop floor F to the outside U, and prevents falls from a balcony B or a rooftop to the outside U.

[0023] In this embodiment, the fall prevention handrail is described as being attached to the top of the base body A, but it may also be a fall prevention handrail that is integrated with the base body A.

[0024] The fall prevention handrail 1 according to the present invention will be described below with reference to the drawings. In addition, in this description, structures and parts that are identical or symmetrical on both sides will be generally given the same reference numerals, and only one side will be described, with the other side omitted as appropriate.

[0025] As shown in FIG. 1, a fall prevention handrail 1 according to an embodiment of the present invention is a handrail disposed on top of a base A that constitutes a protective fence for preventing falls from a balcony B or a rooftop floor F to the outside U. The handrail section 2 is made up of a pair of outer frame sections 3 and a rod-shaped horizontal piece 10 that is placed horizontally between the upper parts of the pair of outer frame sections 3. The outer frame section 3 is made up of rod-shaped inclined pieces 4 and vertical pieces 5. The inclined pieces 4 and vertical pieces 5 are arranged such that the vertical piece 5 hangs down from the lower end of the inclined piece 4 that is inclined toward the floor F in a side view. The vertical piece 5 is formed in an L-shape when viewed from the side, and is provided at its midpoint with a rotating section 12 having a rotating axis (indicating the rotating axis 6; the same applies below) that allows the handrail section 2 to rotate freely relative to the base A, a biasing section 17 that returns the handrail section 2 that has been rotated downward around the rotating axis 6 to its upward position, and an upper regulating section 18 that regulates the upward rotation of the handrail section 2, and the lower end side of the vertical piece 5 is configured as a lower regulating section 20 that abuts the handrail section 2 that has been rotated downward against the base A side to regulate the rotation.

[0026] By configuring it in this way, the outer frame part 3 that forms the handrail part 2 is formed in a V-shape, making it difficult to climb over, and the biasing part 17 and the rotating shaft 6 allow it to be used repeatedly.

[0027] Specifically, the protective fence erected from the floor F of the balcony B shown in Figure 1 is a rectangular base A made of concrete for convenience, and the fall prevention handrail 1 of this embodiment is installed on top of the base A via a metal installation section 41 that is U-shaped when viewed from the side and is arranged with an open downwards edge.

[0028] As shown in Figures 2 and 4, the installation section 41 is formed integrally with a rectangular plate-shaped installation reference piece 42 that abuts the inside of the base A, and a rectangular plate-shaped pressing reference piece 46 that has a pressing bolt 48 that can move back and forth and presses the base A from the outside of the base A to clamp the base A between it and the installation reference piece 42, via a connecting piece 49 that connects the upper ends of these reference pieces 42, 46, and is fixed by placing the connecting piece 49 on top of the base A.

[0029] In this embodiment, a fall prevention handrail 1 is arranged on an installation reference piece 42, and female screw holes 47 are formed on the left and right sides of the pressing reference piece 46. A pressing bolt 48 with a cushioning material or the like formed at the tip is screwed into the female screw hole 47, so that the cushioning material or the like of the pressing bolt 48 presses against the base A, thereby attaching the installation section 41 equipped with the fall prevention handrail 1 to the base A.

[0030] Furthermore, the protective fence that constitutes the base A is not limited to being made of concrete, but may be lattice-shaped or have other shapes, and it goes without saying that any protective fence that prevents falls from the balcony B or rooftop floor F to the outside U falls within the scope of the present invention.

[0031] Therefore, the configuration of the installation section 41 described above is one embodiment, and it goes without saying that as long as the fall prevention handrail 1 according to the present invention is installed, the installation section 41 can be modified and changed in various ways depending on the shape of the target protective fence, etc.

[0032] Next, the configuration of the fall prevention handrail 1 will be described in detail with reference to the drawings.

[0033] As shown in Figures 1 and 2, the outer frame portion 3 is formed integrally by bending a metal round bar into a U-shape in a plan view and inclining it toward the floor surface F to form an inclined piece 4 at the top, and a vertical piece 5 at the bottom hanging down from the lower end of the inclined piece 4.

[0034] In addition, a horizontal piece 10 made of a metal round bar is welded between the upper ends of the pair of outer frame parts 3 to form a handrail part 2 made up of the outer frame parts 3 and the horizontal piece 10.

[0035] As shown in Figure 5, the strength of the handrail section 2 can also be improved by installing a metal, round bar-shaped reinforcing piece 11 that extends from the end of the horizontal piece 10 to the lower end of the vertical piece 5.

[0036] In addition, at approximately the center of the vertical piece 5, as shown in Figures 2 and 3, a rotating section 12 is formed at the tip of a metal, round bar-shaped fixed piece 13 that extends horizontally from the installation reference piece 42 toward the floor surface F, allowing the handrail section 2 to rotate freely relative to the base A.

[0037] Specifically, the fixed piece 13 is arranged horizontally toward the floor surface F by having a male screw 14 threaded into the rear end and screwing it into a female screw hole 43 formed in the installation reference piece 42, and the tip end is formed by cutting the periphery of the round bar into a convex shape to form a plate-shaped engagement base 15 in the vertical direction and of a predetermined thickness, and a rotation shaft hole 16 is drilled into the tip end of the engagement base 15 to pivot the rotation shaft 6 freely.

[0038] In addition, the vertical piece 5 has an engagement receiving portion 7 cut into a concave shape in order to pivotally support the engagement base 15, and the pivot shaft 6 is inserted and fixed by passing through the pivot shaft hole 16 of the engagement base 15 from the side of the vertical piece 5.

[0039] By forming the rotating part 12 in this way, the handrail part 2 can be freely rotated around the rotation axis 6 relative to the base body A toward the lower side of the floor surface F and the return side.

[0040] 2, a biasing portion 17 is formed on the upper side of the rotating portion 12, which returns the handrail portion 2, which has been rotated downward around the rotation shaft 6, to its upward position.

[0041] Specifically, the urging portion 17 consists of a tension spring, and the surface of the installation reference piece 42 or the connection piece 49 on the floor surface F side of the installation portion 41 is cut into a circular concave shape to form a first insertion recess 44 into which one end of the urging portion 17 is inserted, and a second insertion recess 8 also cut into a circular concave shape is formed at the corresponding location on the opposing vertical piece 5, and the other end of the urging portion 17 is inserted, thereby allowing the urging portion 17 to be arranged in the gap between the installation reference piece 42 and the vertical piece 5.

[0042] In addition, the urging section 17 can also be formed below the rotating section 12, as shown in Figure 6. In this case, the urging section 17 can use a compression spring to return the handrail section 2 that has been rotated downward to its upward position.

[0043] In addition, in the gap between the urging portion 17 and the rotating portion 12, as shown in Figure 2, a metal, round bar-shaped upward regulating portion 18 is formed extending horizontally from the installation reference piece 42 toward the floor surface F, and is configured to regulate the upward rotation of the handrail portion 2.

[0044] Specifically, the upper regulating portion 18 is arranged horizontally toward the floor surface F by having a male screw 19 threaded into the rear end and screwing it into a female screw hole 45 formed in the installation reference piece 42, and the tip end is left as a round rod or is formed of a cushioning material such as rubber.

[0045] In addition, at the location of the vertical piece 5 opposite the upper regulating part 18, a third insertion recess 9 is formed, which is cut into a circular concave shape with a diameter larger than the outer diameter of the upper regulating part 18 so that the tip side of the upper regulating part 18 can be inserted without interference.This means that when the rotated handrail part 2 returns and the tip of the upper regulating part 18 abuts against the vertical piece 5 in the third insertion recess 9, stopping the rotation, the vertical piece 5 returns to its original, approximately vertical position.

[0046] Furthermore, the shape of the upper regulating portion 18 and the shape of the vertical piece 5 against which the upper regulating portion 18 abuts are not limited to this embodiment, and various modifications and variations are possible within the scope of the gist of the present invention, such as making the upper regulating portion 18 slightly shorter and cutting the peripheral surface of the round bar of the vertical piece 5 at that point from a curved surface to a vertical surface, thereby giving the upper regulating portion 18 a simple shape that abuts the tip of the upper regulating portion 18 against the vertical piece 5, as long as the vertical piece 5 is configured to return to its original approximately vertical position when the rotated handrail portion 2 is returned.

[0047] In addition, the lower end side of the vertical piece 5 is a downward regulating section 20 that restricts the rotation of the handrail section 2 when it is rotated downward by abutting against the base A side, and in this embodiment, the downward rotation of the handrail section 2 is stopped when the downward regulating section 20 of the vertical piece 5 abuts against the surface of the installation reference piece 42 (or alarm section 22) of the installation section 41.

[0048] Furthermore, as shown in Figure 2, an alarm section 22 that notifies of contact is formed on the surface of the installation reference piece 42 with which the downward regulating section 20 contacts. The alarm section 22 can be a mechanical bell that emits a sound to warn of danger, a bell, an electrical switch, or a method that sends a message to a smartphone when it contacts the surface.

[0049] In addition, by forming a cushioning material 21 such as rubber at the tip of the downward restriction portion 20, it is possible to reduce the impact when it comes into contact with the surface of the installation reference piece 42 or the notification portion 22.

[0050] Furthermore, when the notification section 22 is provided, a contact buffer section (not shown) may be formed to reduce the impact caused by contact between the downward restricting section 20 and the notification section 22 as much as possible.

[0051] The abutment buffer section stops the rotation of the handrail section 2 at a position where the downward regulating section 20 abuts the alarm section 22 but does not press more than necessary.For example, an extremely short abutment buffer section having a configuration similar to the above-mentioned upper regulating section 18 can be arranged directly above the alarm section 22, and the downward rotation of the handrail section 2 can be stopped by the abutment of the vertical piece 5 with the abutment buffer section.

[0052] As explained above, the fall prevention handrail 1 according to this embodiment is configured as a handrail disposed on the top of the base A that constitutes a protective fence for preventing falls from a balcony B or rooftop floor F to the outside U, and the handrail section 2 is configured from a pair of outer frame sections 3 and a rod-shaped horizontal piece 10 that is placed horizontally between the top of the pair of outer frame sections 3, and the outer frame section 3 is made up of rod-shaped inclined pieces 4 and vertical pieces 5, and the inclined pieces 4 and vertical pieces 5 are formed in a U-shape in side view by hanging the vertical piece 5 from the lower end of the inclined piece 4 that is inclined toward the floor F in side view, and the vertical piece 5 is The middle part of the structure is provided with a rotating part 12 having a rotating shaft 6 that allows the handrail part 2 to rotate freely, a biasing part 17 that returns the handrail part 2 that has been rotated downward around the rotating shaft 6 to its upward position, and an upper regulating part 18 that regulates the upward rotation of the handrail part 2. The lower end side of the vertical piece 5 is provided with a lower regulating part 20 that abuts the handrail part 2 that has been rotated downward against the base A side to regulate its rotation, making it difficult to climb over the handrail.Furthermore, by arranging the rotating shaft 6 in the middle part of the vertical piece 5 of the V-shaped outer frame part 3 when viewed from the side, durability can be maintained even when the structure is moved repeatedly.

[0053] Furthermore, since the upper restricting portion 18 is formed above the rotating portion 12, the center of gravity is stabilized and durability can be maintained even when a load is applied.

[0054] Furthermore, since the biasing portion 17 is formed above the upper restricting portion 18, the bending of the handrail is stabilized and durability can be maintained.

[0055] Furthermore, since the biasing portion 17 is formed below the rotating portion 12, the load on the rotating portion 12 is reduced, and durability can be maintained.

[0056] Furthermore, by forming an alarm section 22 at the contact point between the downward regulating section 20 and the base A side to notify of contact, contact can be detected in real time and an audible warning can be issued, thereby preventing falls from occurring at an early stage.

[0057] Although the preferred embodiments and modifications of the present invention have been described above, the present invention is not limited to such specific embodiments and modifications, and various modifications and variations are possible within the scope of the gist of the present invention as set forth in the claims. [Explanation of symbols]

[0058] A Base (protective fence) B. Balcony F Floor U outward 1. Handrails to prevent falls 2 Handrail section 3 Outer frame 4 Slant piece 5 vertical pieces 6 Rotating Axis 7 Engagement receiving part 8 Second insertion recess 9 Third insertion recess 10 horizontal piece 11 Reinforcement piece 12 Rotating part 13 Fixed piece 14 Male thread (rear end of fixed piece) 15 Engagement base 16 Rotating shaft hole 17. Actuation section 18 Upper restriction part 19 Male thread (rear end of upper restriction part) 20 Downward Regulation Department 21 Cushioning material 22 Information Department 41 Installation part 42 Installation reference piece 43 Female screw hole (for connecting the fixed piece) 44 First insertion recess 45 Female screw hole (for connecting the upper restriction part) 46 Pressure reference piece 47 female screw hole 48 Press bolt 49 Connection piece

Claims

1. A handrail is provided on the upper part of a base that constitutes a protective fence to prevent falls from the floor of a balcony or rooftop. A handrail portion is formed by a pair of outer frame portions and a rod-shaped horizontal piece disposed horizontally between the upper portions of the pair of outer frame portions, The outer frame portion is composed of rod-shaped inclined pieces and vertical pieces, and the inclined pieces and the vertical pieces are formed in a letter L shape in side view by hanging the vertical pieces from lower ends of the inclined pieces that are inclined toward the floor surface in side view, The vertical piece has a rotating part having a rotation axis that allows the handrail part to rotate freely relative to the base body, a biasing part that returns the handrail part that has been rotated downward around the rotation axis to an upward position, and an upward restricting part that restricts the upward rotation of the handrail part, A fall prevention handrail characterized in that the lower end side of the vertical piece is a downward restriction portion that abuts against the base side when the handrail portion is rotated downward to restrict rotation.

2. 2. The fall prevention handrail according to claim 1, wherein the upper restriction portion is formed above the pivot portion.

3. 3. The fall prevention handrail according to claim 1, wherein the biasing portion is formed above the upper restriction portion.

4. 3. The fall prevention handrail according to claim 1, wherein the biasing portion is formed below the rotating portion.

5. 3. A fall prevention handrail according to claim 2, characterized in that a notification part is formed at the contact point between the downward restriction part and the base side to notify the user of the contact.

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