JP2012193532A - Safety tool to be locked to handrail - Google Patents

Abstract

PROBLEM TO BE SOLVED: To detachably and easily attach a safety tool to a handrail of existing stairs or the like, and to prevent an operator from falling from the stairs or the like by connecting the safety tool with a safety belt worn by the operator.SOLUTION: The safety tool comprises: a loose attachment member which is to be freely detachably attached to a rod-like handrail frame part of a handrail, is provided with a void portion in the longitudinal direction and has a roughly cylindrical body part; a hooking member to be hooked to a safety belt; and a rope-like member for connecting them. The body part includes a plurality of joint members including a fitting body part in the shape of being cut by a cutting surface connected from a peripheral edge part of one side face of the body part to a peripheral edge part of the other side face and a joint part provided on the cutting surface or/and a peripheral edge part of the cutting surface, and the body part is movably and loosely attached to the handrail frame part by joining the plurality of joint members by the joint part. An interval of the void portion formed by joining is configured to be smaller than the shortest length on a cross section vertical to the center axial direction of the handrail frame part, and to be larger than a width of a support member for supporting the handrail.

Description

  The present invention relates to a safety device used when ascending and descending a staircase and the like, and in particular, can be easily attached to and detached from an existing handrail, and works by connecting a handrail and the safety belt worn by an operator. The present invention relates to a safety device that is attached to a handrail to prevent a person from falling from a staircase or the like.

Conventionally, handrails are provided on stairs, windows, and verandas. These handrails are classified according to their purpose of installation into those that function as auxiliary handrails to hold by hand and support the body, and those that function as fall prevention fences to prevent falling to the outside. Is done.
The handrail installed on the stairs functions as an auxiliary handrail that assists in raising and lowering the stairs and prevents falling down. It also has a function as a fall prevention fence to prevent falling to the outside.

The size of the staircase of a building is stipulated in the Building Standard Law Enforcement Ordinance and varies depending on the purpose of the building. Normally, the height of the kick-up and the size of the tread surface are specified so that it is safe and can be lifted without grabbing the handrail. Is used.
However, the above-mentioned provisions are not applicable to special stairs used for special purposes. For example, the staircase around the side of the crude oil tank used for equipment inspection work, etc. is relatively steep. The handrail is provided along the end of the tread plate on the opposite side of the tank by a support column, and these have a function as an auxiliary handrail and a function as a fall prevention fence.
Still, since the crude oil tank stairs are outside stairs, they may be beaten in strong winds and lose their balance, or they may fall from the stairs by slipping their feet with rain or snow. Moreover, depending on the case, it may fall from the top of a railing of a handrail to the downward direction outside a staircase.

In order to prevent such an accident, it is desirable to wear a safety belt and to hook a hook or the like at the tip of the rope part of the lifeline to the handrail. However, since the handrail is attached by a plurality of support posts, the hook is caught at the place where the support posts are installed. Therefore, it is necessary to remove the hook at the place where the column is installed and to hang it again. Moreover, since the support | pillar also has a function as a fall prevention fence, it is attached to every step, for example at a narrow interval. Therefore, when the tank is large, it must be re-applied several tens of times while moving from the lower part of the stairs to the upper part of the tank or from the upper part of the tank to the lower part of the stairs. Since it is a burden on the worker and the work itself is disturbed, it is not actually used. In other words, no measures such as fall prevention are taken, and there is nothing other than supporting the body by hand when something happens.
In addition, even when the handrail is attached to the wall by a support member instead of a support column, the hook will be caught at the installation location of the support member when it is raised and lowered. It needs to be multiplied and it takes time and effort.

  As an apparatus for assisting the raising and lowering of stairs, for example, Japanese Patent Application Laid-Open No. 10-179663 “Stair climbing assistance apparatus” has been proposed. This stair-climbing assist device includes a handrail-shaped guide rail installed inclined along the stairs, a slider portion that is slidable while being guided by the guide rail, a handle portion that is attached to the side surface, and a slider portion When the slider slides in the stairs ascending direction, it is equipped with a one-way motion restricting means that locks or resists when the slider part slides in the stairs descending direction. It is a stair lift assist device that can assist. It attaches to a handrail and assists in raising and lowering stairs safely.

  Moreover, as a security device for the purpose of preventing fall from the stairs and assisting raising and lowering, for example, Japanese Patent Application Laid-Open No. 8-24353 “Falling prevention device fitted on a handrail of a stairs” has been proposed. This overturn prevention device is used by being fitted into a handrail having a substantially square cross section, and is provided with a claw for preventing reverse rotation at the upper end of the upper surface of a substantially C-shaped hollow moving body provided with an opening in the handrail of the staircase. Attach a roller with anti-reverse claw equipped with a hole, open a hole for the stopper at the approximate center of the top of the moving body, attach two handle mounting seats, and attach a stopper rubber to the tip of the stopper. Is attached to the lower part of the handle, such as a rod, and a spring presser is attached below the handle on the opposite side. A handle with a compression spring attached to it is attached to the handle attachment seat so that it can be moved. On the inner surface of the upper part of the opening, a side stopper rubber is attached to the length of the moving body in a horizontally long manner.

Japanese Patent Laid-Open No. 10-179663 JP-A-8-24353

However, since the “stair climbing assist device” assists the lifting of the staircase also as a rehabilitation operation, it restricts the lifting operation more than necessary to be used by workers such as equipment inspection. There was a problem that.
Further, since the configuration of the slider portion described above is complicated, it is difficult to manufacture and is not economical. And if the handle part is released for some reason, there is a problem that the function as an auxiliary handrail cannot be exhibited.

  In addition, the “falling prevention device fitted to the handrail of the staircase” is limited to those having a complicated structure and having a substantially square cross section of the handrail. When the upper end and lower end of the handrail are bent, it is necessary to fit from the side or upper surface of the handrail, but in order to fit the handrail, it is necessary to widen the opening and there is a problem of lack of stability. there were. Furthermore, it is necessary to always move by holding the handle, and there has been a problem that it is not possible to prevent falling or the like when both hands are closed.

  The present invention has been proposed to solve the above-described problems. In other words, the object of the present invention is to easily attach and detachably attach to an existing handrail of a staircase or a processed handrail, connect with a safety belt worn by the worker, fall from the worker's staircase, etc. An object of the present invention is to provide a safety device that can be attached to a handrail that can be easily manufactured.

  The safety device attached to the handrail of the first aspect of the present invention for achieving the above object is attached to the handrail and a safety belt worn by the worker, and by connecting the worker and the handrail, A safety device that prevents an operator from falling or dropping, and the safety device (100, 100X, 100Y) is attached to or detached from a bar-shaped handrail frame (11, 11X, 21) of the handrail (10, 10X, 20). A loose attachment member (110, 110X, 110Y) having a substantially cylindrical main body portion (111, 111X, 111Y) having a gap portion (118) in the longitudinal direction, which is freely attached, and one end on the attachment member A rope-like member (150, 150X) to which the side is attached, and a latch member (130) attached to the other end side of the rope-like member and latched to the safety belt (1), Are a plurality of joining members (11 , 113, 112X, 113X, 112Y, 113Y), and the joining member is cut by a cut surface connected from the peripheral edge of one side of the main body to the peripheral edge of the other side ( 112a, 113a) and joints (112c, 112d, 113c, 113d, 112h, 113h, 117, 117Y) provided on the cut surface or / and the peripheral edge of the cut surface, The plurality of joining members are loosely attached to the handrail frame portion by joining the joint members by the joint portion, and an interval between the gap portions formed by joining is in a central axis direction of the handrail frame portion. In a vertical cross section, it is smaller than the shortest length and larger than the width of the support member (13) supporting the handrail.

  The safety device attached to the handrail of the second aspect of the present invention is attached to the handrail and a safety belt worn by the worker, and prevents the operator from falling or falling by connecting the worker and the handrail. A safety device, wherein the safety device (200, 200X, 300) is detachably attached to a bar-shaped handrail frame (11, 11X, 21) of the handrail (10, 10X, 20) in a longitudinal direction. A loose member (210, 210X, 310) having a substantially cylindrical main body portion (211, 211X, 311) having a gap portion (118), and a rope-like member (150) attached at one end to the loose member. , 150X) and a hook member (130) attached to the other end of the rope-like member and hooked on the safety belt (1), and the main body is perpendicular to the central axis direction. The cross section has an arc shape with a central angle of 90 degrees or less. And a plurality of pivotable columnar members (212, 212X, 213, 213X, 312, 313a, 313b), and the columnar members are slid to rotate and fixed by the fixing portions (214a, 214b, 215, 215a). By fixing, the space between the gaps is smaller than the shortest length of the handrail frame portion in the cross section perpendicular to the central axis direction, and the support member (13 ) Larger than the width of

In the first aspect or the second aspect, the handrail (10, 10X, 20) is a handrail installed along the stairs, and when the operator falls, the loosening member (110, 110X, 110Y, 210, 210X, 310) rotates, the gap (118) moves to the outside of the staircase, and the support member (13) moves to the main body (111, 111X, 111Y, 211, 211X, 311). ) May be configured to limit the downward movement of the stairs.
Further, a substantially plate-like elastic member (112i, 113i, 313i) having a large friction coefficient is affixed to the surface of the inner wall surface of the loose member (110, 110X, 110Y, 210, 210X, 310), The elastic member may be configured to restrict movement of the loose member when an operator presses the loose member against the handrail frame portion (11, 11X, 21).

A plurality of rotating bodies (R) are disposed on the inner wall surface of the loose member (110, 110X, 110Y, 210, 210X, 310), and the loose member is rotated by rotating the rotary body. May be configured to move the handrail frame portion of the handrail.
In addition, the upper part of the inner wall surface of the loose attachment member (310) is provided with a stretchable elastic member (s) having a stretchability and a rotating body (R) continuously connected to be movable by the stretchable elastic member. A mechanism portion (315) is provided, and in a normal state, a part of the rotating body protrudes from the surface of the substantially plate-like elastic member (313i), and an operator puts the loosening member on the handrail frame portion (11). When pressed, the projecting rotating body may be configured to move toward the outer wall surface of the loose member.

A brake mechanism (314) having gears (m, n) and pawls (i, j) for restricting the operation direction to one direction is disposed on the upper inner wall surface of the loose member (310). You may comprise so that a loose attachment member may restrict | limit that it moves below a staircase.
In addition, the adhering to the inner peripheral part of the main body part (211) of the loose attachment member (210) and / or the outer wall surface of the handrail frame part (21), in parallel with the central axis direction of the handrail frame part. You may provide the suppression part (213a, g) which restrict | limits that a member rotates to the direction opposite to the direction rotated when an operator falls.

According to the safety device attached to the handrail according to the present invention, the safety device (100, 100X, 100Y, 200, 200X, 300) and the safety belt worn by the operator and the handrail (10, 10X, 20) Can be easily connected to prevent the operator from falling or falling.
The worker only needs to attach the safety device (100, 100X, 100Y, 200, 200X, 300) before going up the stairs, and can move regardless of the presence of a column or the like. Installation and removal can be done easily, so it can be done without taking time, and the burden on the operator is light. Moreover, the existing handrail (10, 10X, 20) can be used effectively. Moreover, since the safety device (100, 100X, 100Y, 200, 200X, 300) has a simple structure, it is easy to manufacture and economical. Furthermore, the safety device (100, 100X, 100Y, 200, 200X, 300) can be used not only by being attached to the safety belt (1) and being pulled, but also by an operator.

It is the general | schematic front view which showed the mode that the safety gear which engages with the handrail of Example 1 was attached to the handrail, and the operator is moving the stairs. BRIEF DESCRIPTION OF THE DRAWINGS It is the figure which showed the safety device engaged with the handrail of Example 1, (a) is explanatory perspective view which shows the state at the time of use of a safety device, (b) shows a mode that two joining members are fitted. FIG. The state which mounted | wore the handrail frame part with a safety gear is shown, (a) is a top view, (b) is sectional drawing of the AA part of (a), (c) is the top view seen from the staircase side. It is the figure which showed the relationship between the loose fitting member of a safety gear, and a handrail, (a) is the front view which shows the state at the time of normal raising / lowering visually recognized from the staircase side, (b) is from the B direction of (a). The explanatory side view which shows the state visually recognized, (c) is the front view which shows the state at the time of the fall visually recognized from the stair side, (d) is the explanatory side view which shows the state visually recognized from the C direction of (c). It is the schematic about the loose fitting member of the safety device which is a modification of the safety device of Example 1, (a) is a top view, (b) is the DD part and EE part of (a). Sectional drawing, (c) is a front view seen from the stairs side. It is the schematic about the loose fitting member of the safety device which is a modification of the safety device of Example 1, (a) is a top view, (b) is the FF part and GG part of (a). Sectional drawing, (c) is a front view seen from the stairs side. It is a figure which shows the relationship between the fitting member of the safety gear of Example 2, and the handrail which has a handrail frame part of a cross-sectional view rectangular shape, (a) is visually recognized from the direction perpendicular | vertical with respect to the center axis direction of a handrail frame part. The explanatory plan view showing the state where the fitting member is put on the handrail frame part, (b) is the explanatory sectional view of the II part of (a), (c) is perpendicular to the central axis direction of the handrail frame part An explanatory plan view showing a state in which the fitting member is loosely fitted to the handrail frame portion 21 as viewed from various directions, and (d) is an explanatory sectional view of the JJ portion of (c). Steps perpendicular to the central axis direction of the handrail frame portion showing the relationship between the loosely fitting member of the safety device and the handrail having the handrail frame portion having a circular cross-sectional view, which is a modification of the safety device of the second embodiment. It is explanatory explanatory side view at the time of visually recognizing from the downward direction, (a) is a figure which shows the state which put the fitting member on the handrail frame part, (b) shows the state which loosely fitted the fitting member to the handrail frame part. FIGS. 3C and 3D are views showing how the fitting member rotates due to the operator falling or the like. Explanation when the loosely-fitting member of the safety device and the handrail provided with the receiving portion are viewed from below the stairs perpendicular to the central axis direction of the handrail frame portion, which is a modification of the safety device of the second embodiment. It is a side view and is a figure which shows the state which loosely fitted the fitting member to the handrail frame part. It is a figure which shows the state which covered the fitting member of the safety gear of Example 3 on the handrail frame part, (a) is the explanatory top view visually recognized from the direction perpendicular | vertical with respect to the center axis direction of a handrail frame part, (b) (A) is explanatory sectional drawing of the KK part, (c) is explanatory sectional drawing of the LL part of (a). It is a figure which shows the state which loosely fitted the attachment member of the safety gear of Example 3 to the handrail frame part, (a) is the explanatory top view visually recognized from the direction perpendicular | vertical with respect to the center axis direction of a handrail frame part, (b) ) Is an explanatory cross-sectional view of the MM portion of (a), and (c) is an explanatory cross-sectional view of the NN portion of (a). It is explanatory sectional drawing which cut | disconnected the fitting member of the safety device of Example 3 by the surface perpendicular | vertical with respect to the central-axis direction of a handrail frame part, (a) is a fitting member when an operator goes up stairs. The figure which shows the state pressed with the handrail frame part by hand, (b) is a figure which shows a mode that a fitting member is rotating by an operator fall etc., (c) is a movement of the main-body part of a fitting member It is a figure which shows the state from which it was blocked | prevented by the handrail frame part.

  DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of a safety device attached to a handrail according to the present invention will be described below based on the drawings.

FIG. 1 is a schematic front view illustrating a state in which a safety device 100 attached to a handrail according to the first embodiment is attached to a handrail 10 and an operator is moving up the stairs.
As shown in FIG. 1, the safety device 100 has a hook member 130 on one end side of a rope-like member 150 attached to a safety belt 1 worn by an operator, and a loose fitting member 110 on the other end side is attached to a staircase. The handrail 10 is used by being movably attached to the handrail frame portion 11 of the handrail 10. As shown in FIG. 1, the handrail 10 supports the body and holds the handrail frame portion 11 held by hand when assisting the raising and lowering of the stairs, and the handrail frame portion 11 at an appropriate height along the slope of the stairs. In order to support and prevent falling from the lower side of the handrail frame 11 to the outside of the staircase, it comprises a plurality of support members 13 provided in a fence shape at substantially equal intervals.

The safety belt 1 is a torso belt type safety belt for general high-altitude work, and includes a rope portion 1a as a lifeline, a belt 1b that is attached to a worker's torso portion and holds a human body when falling, and a rope portion. It consists of a hook portion 1c that holds 1a on a support or the like. The safety belt 1 is not limited to such a belt type as long as it prevents the operator from falling or falling.
The safety device 100 includes a loose fitting member 110 that is engaged with the peripheral portion of the handrail frame portion 11, a hook portion 130 that is hooked to the hook portion 1c of the safety belt 1, and a rope-like member 150 that connects them. Consists of. By attaching the latch member 130 to the safety belt 1 and attaching the loose fitting member 110 to the handrail frame portion 11 of the handrail 10 to be described later, the worker and the handrail 10 are connected to ensure the safety of the worker.

FIG. 2 is a view showing the safety device 100 attached to the handrail of Example 1, (a) is an explanatory perspective view showing a state when the safety device 100 is used, and (b) shows two joining members 112, It is explanatory explanatory drawing which shows a mode that 113 is fitted. 3 shows a state in which the safety device 100 is mounted on the handrail frame portion 11, (a) is a plan view, (b) is a cross-sectional view of the AA portion of (a), and (c) is a staircase side. It is the top view seen from. The upward direction of the drawing is the upper side of the stairs.
As shown in FIG. 2A, the safety device 100 includes a loose fitting member 110, a rope-like member 150 having one end attached to the loose fitting member 110, and a hook attached to the other end of the rope-like member 150. And a stop member 130.

As shown in FIG. 2A, the latching member 130 is a metal ring-shaped member, and one end side of the rope-shaped member 150 is attached. In addition, as described above, the hook portion 1c of the safety belt 1 is detachably hooked on the hook member 130.
The other end side of the rope-shaped member 150 is attached to the attachment hole H of the holding portion 119 of the loosely fitting member 110. The rope-shaped member 150 has a substantially circular cross section, and is made of a material having a strength capable of withstanding the weight of the operator and a load of a tool or the like worn by the operator when falling from the stairs. . Furthermore, the rope-shaped member 150 is attached so that it does not come off even if the above-described weight and load are applied to the loosely fitting member 110 and the retaining member 130.

The loose fitting member 110 is disposed on the outer wall surface of the abutting portion in order to fix the substantially bowl-shaped main body 111 formed by fitting the two joining members 112 and 113 and the two joining members 112 and 113. The locking member 117 is a vertical upper outer wall surface of the main body portion 111 and includes a holding portion 119 provided on the joining member 112.
The main body 111 is a substantially cylindrical member having a C-shaped cross-sectional view, and has a gap 118 on the lower side in the vertical direction, in which a part of the wall surface is cut out in parallel to the central axis direction.
The holding part 119 is a tongue-shaped member, and its base part is fixed to the main body part 111. Further, an attachment hole H for attaching the rope-like member 150 is provided in a substantially central portion of the holding portion 119.

As shown in FIG.2 (b), the joining member 112 of the main-body part 111 consists of the fitting body part 112a and the fitting convex part 112c. The fitting part 112a is a substantially cylindrical member having a C-shaped cross-sectional view, with the outer peripheral wall on the top and perpendicular to the line of sight. After cutting, it is shaped like a part cut to the left in parallel to the central axis direction. Specifically, the shape is such that one of the members in a columnar shape with a substantially arc-like cross section is removed when the member is divided into four in the longitudinal direction and the direction perpendicular thereto.
The fitting convex portion 112c is a rod-like member having a substantially circular shape in cross section, and is provided so as to protrude from the abutment surface 112b, which is a cross section perpendicular to the central axis at the central portion in the central axis direction. Yes. The contact surface 112b is also provided with a fitting recess 112d into which the fitting projection 113c of another joining member 113 is inserted. The fitting convex portions 112c and the fitting concave portions 112d are provided alternately at equal intervals three by three on the contact surface 112b having a substantially quarter shape of the ring.
As shown in FIG. 2B, the shape of the bonding member 113 is the same as that of the bonding member 112 and is disposed so as to face the bonding member 112, so that it corresponds to the bonding member 112. The reference numerals are assigned to and the description thereof is omitted. When the joining member 112 and the joining member 113 are assembled together, the gap portion 118 is formed in the longitudinal direction.

  As shown in FIG. 2B, since the joining member 112 and the joining member 113 have wide opening portions, the inner wall surfaces 112 e and 113 e can be covered with the outer peripheral wall of the handrail frame portion 11, respectively. The joining member 112 and the joining member 113 are put on the handrail frame portion 11 with the contact surface 112b and the contact surface 113b facing each other in a slightly separated state, and the fitting convex portion 112c is fitted into the fitting concave portion 113d. The mating convex portion 113c can be fitted into the fitting concave portion 112d and can be detachably fitted to form a substantially cylindrical main body portion 110 having a C-shaped sectional view.

A state in which the joining members 112 and 113 are fitted to the handrail 10 is shown in FIG.
As shown in FIGS. 3A to 3C, the connected main body portion 111 is attached so as to surround the handrail frame portion 11. As shown in FIG. 3, the loosely fitting member 110 of the safety device 100 is manufactured so that the gap 118 is kept in the vertically lower side and does not rotate as shown in FIG. For example, a material having a large specific gravity may be used for the lower portion in the vertical direction opposite to the staircase of the main body 111, or a balancer may be provided, although not shown. Further, the inner wall surfaces 112e and 113e of the joining members 112 and 113 are polished so that friction with the handrail frame portion 11 is reduced.

Next, the relationship such as the size of each component will be described with reference to FIG.
As shown in FIGS. 3A and 3B, the size m of the opening in the cut surface perpendicular to the central axis direction of the joining member 113 is the cut surface of the handrail frame portion 11 perpendicular to the central axis direction. Is larger than the size n of the maximum width (in this case, the diameter of the outer periphery of the handrail frame). The same applies to the joining member 112 having the same shape. Further, the interval s between the gaps 118 of the main body 111 is such that the main body 111 does not fall out of the handrail frame 11 and the support member 13 of the handrail 10 can pass through the gap 118.
The length of the main body portion 111 in the central axis direction is shorter than the interval between the support members 13 of the handrail 10 and is long enough to rotate while moving between the support members 13 when an operator described later falls. It has become.

As shown in FIGS. 2A and 3A, the joining members 112 and 113 are locked by a locking member 117 including a receiving portion and a hooking portion. Two sets of the locking members 117 are provided on the outer peripheral edge portion where the contact surfaces 112b and 113b are provided.
By fitting the latching part provided in the joining member 113 into the receiving part provided in the joining member 112, it is possible to prevent the fitted joining members 112 and 113 from being detached.
Further, if the latching portion provided in the joining member 113 is removed from the receiving portion provided in the joining member 112, and the connecting portion 112c is extracted from the connecting hole 113d and the connecting portion 113c is extracted from the connecting hole 112d, the joining member 112 is obtained. , 113 can be removed and removed from the handrail frame portion 11.

Hereinafter, the usage method of the safety device 100 of Example 1 is demonstrated.
4A and 4B are views showing the relationship between the loosely fitting member 110 of the safety device 100 and the handrail 10, wherein FIG. 4A is a front view showing a state during normal ascending and descending viewed from the stairs side, and FIG. (A) An explanatory side view showing a state visually recognized from the B direction, (c) a front view showing a state at the time of falling, viewed from the stairs side, and (d) a state visually recognized from the C direction of (c). FIG. The upward direction of the drawing is the upper side of the stairs.
First, before ascending / descending the stairs, the operator covers and attaches the joining members 112 and 113 to the handrail frame portion 11 as described above, and loosely fits the loose fitting member 110 of the safety device 100 to the handrail frame portion 11. To do. Then, the hook portion 1 c of the safety belt 1 that is worn is attached to the hooking member 130 on the one end side of the safety device 100. By making such a preparation, the operator's body can be connected to the handrail frame portion 11 via the safety device 100.

When going up the stairs, the hook 1c of the safety belt 1 that is worn pulls the rope-shaped member 150 and the loosely-fitting member 110 through the hooking member 130 as the worker moves. Therefore, as shown in FIGS. 1 and 4A, the safety device 100 moves upward so that the inner wall surfaces 112 e and 113 e of the loosely fitting member 110 slide on the upper side of the outer peripheral wall of the handrail frame portion 11. To go.
When the worker has gone up the stairs, the safety device 100 is removed from the handrail frame portion 11 as described above. Alternatively, the hook 1c of the safety belt 1 may be removed from the hook member 130, and the safety gear may be left attached until the work is finished.

  When going down the stairs, the safety device 100 is attached to the handrail frame 11 in the same state as when going up the stairs. The loose fitting member 110 slides to the handrail frame portion 11 in front (downward) of the operator by its own weight. The worker goes down the stairs in a state where the worker is pulled by the loose fitting member 110, that is, in a state where only the operator's direction is reversed in the same positional relationship as in FIG. 1. Once the stairs are completed, the operator can remove the safety device 100 from the handrail frame portion 11 as described above.

  As shown in FIGS. 4 (a) and 4 (b), during normal stair climbing, the loosely fitting member 110 of the safety device 100 slides on the handrail frame portion 11 with the gap portion 118 on the lower side in the vertical direction. . Therefore, since the support member 13 supporting the handrail frame portion 11 passes through the gap portion 118, the operator can move up and down smoothly.

  When the operator falls on the stairs, the position of the operator's waist is lowered, and the hook portion 1c of the safety belt 1 is pulled downward in the vertical direction. Therefore, the holding portion 119 of the loosely fitting member 110 is pulled downward in the vertical direction on the staircase side via the hooking member 130 and the rope-like member 150. Therefore, the loose fitting member 110 rotates in the direction of the arrow shown in FIG. 4B while moving downward so as to press the inner wall surfaces 112e and 113e against the handrail frame portion 11.

  4C and 4D show a state where the loose fitting member 110 is rotated. The loose fitting member 110 rotates between the support members 13, and the gap 118 of the loose fitting member 110 rotates from the lower side in the vertical direction to the outside of the staircase. After the rotation, the lower portion of the buffer member 110 (X portion in FIGS. 4C and 4D) hits the support member 13 of the handrail 10, so that the support member 13 prevents the safety device 100 from moving down the stairs. . Thereby, it is possible to prevent the operator from falling down the stairs.

5A and 5B are schematic views of a loose fitting member 110X of a safety device 100X that is a modified example of the safety device 100 of the first embodiment. FIG. 5A is a plan view, FIG. 5B is a DD portion of FIG. Sectional drawing of the EE part, (c) is the front view seen from the staircase side. Note that the upward direction of the drawing is the upper side of the stairs, and the same reference numerals as those in FIGS.
Hereinafter, the difference between the safety device 100X and the safety device 100 (see FIG. 3A) will be described with reference to FIG. The safety device 100 </ b> X is different in the shape and configuration of the safety device 100 and the joining members 112 and 113, the position and configuration of the holding portion 119, and the configuration of the rope-shaped member 150.

  As shown in FIGS. 5A and 5C, the joining members 112X and 113X of the loosely fitting member 110X of the safety device 100X are provided with rounds 112f and 113f, which are guide portions for guiding the support member 13, respectively. Yes. The rounds 112f and 113f are formed at the vertical lower end of the substantially C-shaped upper wall surface a or lower wall surface b of the main body portion 111X to which the joining members 112X and 113X are fitted, and on the straight edge of the side wall surface. It is provided so as to be cut out in a curved shape. For this reason, the gap 118 of the safety device 100X is configured such that the distance between the both ends is gradually increased. Further, the upper portions 112f and 113f are not provided on the upper portions of the upper wall surface a and the lower wall surface b in the vertical direction, and the cushioning materials 112g and 113g are bonded in accordance with the shape of the upper wall surface a or the lower wall surface b. Yes.

Further, as shown in FIG. 5 (b), engagement grooves 112h and 113h are provided on the surface that comes into contact with the main body portion 11X in parallel with the central axis direction when the joining members 112X and 113X are fitted. Yes.
Further, as shown in FIGS. 5A and 5B, the joining members 112X and 113X of the loosely fitting member 110X of the safety device 100X are configured to include a rotating body R. Four concave portions are provided on the inner wall surfaces of the joining members 112X and 113X, and a rotating body R made of a spherical body is rotatably disposed. The centers of the four rotating bodies R are on the same plane and are located at the vertices of a substantially rectangular shape. The loose fitting member 110X of the safety device 110X moves the handrail frame portion 11 when these rotating bodies R roll.

As shown in FIGS. 5A and 5C, the holding portion 119X of the loosely fitting member 110X is positioned at the center in the vertical direction of the main body portion 111X including the bonding members 112X and 113X, and is held on the bonding member 112X side. It consists of a piece c and a holding piece d on the joining member 113X side. The holding pieces c and d have the same shape as that of the safety device 100, and a mounting hole H is provided at a substantially central portion thereof so as to communicate in parallel with the central axis direction of the main body portion.
As shown in FIG. 5A, the rope-like member 150X of the safety device 100X has a hook-like member e attached to the other end opposite to the one end to which the hook 130 is attached. In the safety device 100X, the rope-like member 150X is detachably attached to the holding portion 119X of the loosely fitting member 110X.

  In the safety device 100X, the joining members 112X and 113X are fitted and the attachment holes H of the holding pieces c and d are communicated, and then the hook-like member e is latched. The hook-like member e not only connects the loosely-fitting member 110X and the rope-like member 150X, but also plays a role of preventing the two joined joining members 112X and 113X from coming off. Therefore, when removing the two joining members 112X and 113X that have been fitted, the hook-shaped member e is removed from the attachment hole H that is hooked before the two joining members 112X and 113X. Since the other usage methods are the same as those of the safety device 100, description thereof is omitted.

6A and 6B are schematic views of a loose fitting member 110Y of a safety device 100Y that is a modification of the safety device 100 of the first embodiment, where FIG. 6A is a plan view, and FIG. 6B is a FF portion of FIG. Sectional drawing of GG part, (c) is the front view seen from the staircase side. Note that the upward direction of the drawing is the upper side of the staircase, and the same components as those of the safety device 100 and the safety device 100X are denoted by the same reference numerals as those in FIGS. Moreover, since the rope-shaped member 150 and the latching member 130 are the same as those of the safety device 100, the description thereof is omitted.
Hereinafter, the difference between the safety device 100Y and the safety device 100 (see FIG. 3A) will be described with reference to FIG. The safety device 100Y differs from the safety device 100 in the configuration of the joining members 112 and 113 and the position of the holding portion 119.

  As shown in FIGS. 6 (a) and 6 (c), the safety device 100Y is not slid by the handrail frame 11, but moved by the operator with his / her hand. Therefore, a finger hooking portion 114 through which the thumb passes is disposed on the side surface portion of the staircase side outer wall on the joining member 112Y of the loosely fitting member 110Y obliquely so that the right side is lowered in plan view with respect to the central axis direction of the main body portion 111Y. It is installed. This finger hook portion 114 is used as an auxiliary when moving with the loosely fitting member 110Y, and is made of an elastic material such as rubber so as to fit the thickness of the operator's finger to be used. . Moreover, when the force more than necessary is applied, it is comprised so that the upper end part or lower end part of an elastic material may remove | deviate from the main-body part 111Y.

The joining members 112Y and 113Y are provided with a recess having a catching hole at substantially the same position as the catching member 117 of the safety device 100, and embedded with the catching member 117Y that connects the joining member 112Y and the joining member 113Y. It is attached as follows. This prevents the locking member 117Y from hitting the hand when the main body 111Y is gripped by hand.
The holding portion 119Y is provided to extend the lower wall surface b at the lower end portion on the upper side in the vertical direction of the outer wall of the main body portion 111Y. When the loose fitting member 111Y of the safety device 110Y is held by hand, it is in a position where it does not hit the hand.
As with the safety device 100X, buffer materials 112g and 113g are stretched on the upper wall surface a and the lower wall surface b of the main body 111Y, but unlike the case of 100X, the rounds 112f and 113f are not provided. It is attached to the entire upper wall surface a or lower end surface b.

  FIG. 6B shows a cross-sectional view of the FF portion and the GG portion of FIG. The position of the handrail frame member 11 when the loosely fitting member 110Y is moved by the broken line (fine broken line 11a) and when the loosely fitted member 110Y is pressed against the handrail frame portion 11 of the staircase (coarse broken line 11b). Is shown. Although the position of the handrail frame 11 is moved in the drawing, the position is actually moved to the loose fitting member 110Y.

As shown in FIG. 6B, elastic members 112i and 113i made of a material having a large friction coefficient are stretched on substantially the upper half of the inner wall surface of the main body 111Y. The worker presses the loosely fitting member 110Y of the safety device 100Y held on the hand against the handrail frame portion 11 of the handrail 10 in order to raise the body when going up the stairs and to support the body when going down. At this time, the handrail frame portion 11 is located at the position indicated by the rough broken line 11b in FIG. 6B, and the elastic members 112i and 113i are sandwiched between the loosely fitting member 110Y and the handrail frame portion 11 due to friction. The loose fitting member 110Y is prevented from sliding. Therefore, the operator can hold the safety device 100Y by hand and use the handrail 10 as an aid for raising and lowering the stairs.
Further, the loosely fitting member 110Y can be moved so as to float the main body member 111Y from the handrail frame portion 11 using the finger hook portion 114 passing through the thumb. At this time, since the handrail frame 11 is located at the position indicated by the fine broken line 11a in FIG. 6B, the frictional force of the elastic members 112i and 113i does not work.

  When the operator falls, the main body 111Y rotates and is prevented from moving by the support member 13 in the same manner as the safety devices 100 and 100X, so that the operator can be prevented from falling. Further, in the safety device 100Y, the elastic members 112i and 113i can come into contact with the outer wall surface of the handrail frame portion 11 during rotation, and the rotation speed and the downward movement speed can be suppressed.

The method of using the safety device 100Y is the same as that of the safety device 100, except that it is used by hand.
However, unlike the case of the safety devices 100 and 100X, the safety device 100Y is used by changing in the opposite direction when going up the stairs in the state shown in FIG. 6 and going down the stairs. That is, it fits in the handrail frame portion 11 so that the joining member 112Y comes below the joining member 113Y. Thereby, the finger hook part 114 can be used also when going down the stairs. In addition, by using such a replacement, it is possible to prevent the rope-shaped member 150 from being caught by a finger or the like of the hand having the main body portion 111Y and being injured.
As described above, in the case of the safety device 100Y, the loosely fitting member 111Y is moved by hand, so that it is possible to prevent the buffer member 110Y from rotating and hitting the support member 13 when moving. Therefore, it is not necessary to use the balancer described above.

According to the safety devices 100, 100X, and 100Y of the first embodiment, the safety belt 1 worn by the worker and the handrail 10 can be easily connected, and the worker can be prevented from falling from the stairs. Is possible.
The joining members 112, 113, 112X, 113X, 112Y, 113Y are assembled face to face, and the gaps 118 between the body portions 111, 111X, 111Y fitted to the handrail frame portion 11 (s in FIG. 3A). Etc.) is narrower than the size of the openings (m in FIG. 3B) of the individual joining members 112, 113, 112X, 113X, 112Y, 113Y. The gap 118 is smaller than the width (n) of the handrail frame 11 and larger than the width of the support member 13. Therefore, if the two joining members are individually put on and fitted to the handrail frame member 11, it can be prevented from falling off the handrail frame portion 11. Further, when moving up and down, the support member 13 of the handrail 10 can be smoothly moved by passing it through the space 118.
And when the operator slips his / her foot, the loose fitting members 110, 110X, 110Y of the safety devices 100, 100X, 100Y, which are loosely fitted to the handrail frame portion 11 of the handrail 10, work. When the person falls, the gap 118 moves from the lower side in the vertical direction to the outer side of the stairs. Thereby, since the movement of the loosely fitting members 110, 110X, and 110Y is hindered by the support member 13 of the handrail 10, the operator can be reliably prevented from falling.

The worker only needs to perform the work of attaching the safety devices 100, 100X, and 100Y before going up the stairs. During normal lifting, the gap 118 of the loosely fitting members 110, 110X, 110Y is on the lower side in the vertical direction, so that the operator can freely move the stairs regardless of the presence of the support member 13 of the handrail 10. Can do.
The operator can raise and lower the stairs while holding the loosely fitting members 110, 110 </ b> X, and 110 </ b> Y in his / her hand and moving along the handrail frame 11.
Installation and removal work can be done easily, so it can be done without taking time, and the burden on the operator is light. Furthermore, since the safety gears 100, 100X, and 100Y can use the existing handrail as they are and have a simple structure, they are easy to manufacture and economical. Even if it is the handrail 10 by which the upper end part and lower end part of the handrail frame part 11 are bent below etc. so that a sleeve etc. may not be caught, it is possible to attach.

  In the loosely fitting member 110X of the safety device 100X, the inner wall surface of the main body 111X does not slide on the outer wall surface of the handrail frame 11, but moves because the rotating body R rolls. It becomes. Further, if the rotating body R is rotated only in the central axis direction of the main body 111X, the loose fitting member 110X can be moved more stably rather than relying on the balance of the main body 11X described above. . Moreover, you may provide the shallow groove | channel parallel to a central-axis direction in the part where the rotary body R rolls at the time of normal raising / lowering of the outer wall surface of the handrail frame part 11. FIG. Furthermore, the movement of the loose fitting member 110X can be stabilized. It should be noted that it is necessary to set the depth so that the rotating body R can easily come out of the groove when the operator falls.

  The joining members 112X and 113X of the loose fitting member 110X of the safety device 100X are provided with rounds 112f and 113f for guiding the support member 13 to the lower end in the vertical direction of the upper wall surface a or the lower wall surface b. As a result, even if the balance of the main body 111X of the loosely fitting member 110X is somewhat disturbed and rotated, the support member 13 can be passed through the space 118 and the operator can move more easily. Become. Further, the rounds 112f and 113f are provided only at the lower end in the vertical direction so that the loose fitting member 110X does not hit the support member 13 when the operator falls or the like is rotated. It has become.

  According to the loose fitting member 110X of the safety device 100X, the hook-like member e provided at the tip of the rope-like member 150X is attached to the holding portion 119X of the joining member 112X, 113X, thereby fitting the joining members 112X, 113X. Can be prevented from coming off. Therefore, it is not necessary to dispose the locking member 117, and the shape of the joining member 112X and the joining member 113X is the same, so that the manufacturing is easy and economical. It can also be easily attached and removed.

  In the present embodiment, the case where the handrail 10 is installed on the left side of the staircase has been described. However, the safety devices 100 and 100Y can be connected to the joining members 112 and 112X even when the handrail 10 is installed on the right side of the staircase. Can be used in the same manner by fitting them in the opposite direction so as to be positioned below the stairs with respect to the joining members 113 and 113X.

In the safety devices 100X, 100Y, the engaging grooves 112h, 113h are provided in the joining members 112X, 113X, 112Y, 113Y. Even when the weight or the like of the operator is applied to the holding portions 119X and 119Y, the shapes of the main body portions 111X and 111Y can be prevented from being distorted, and the load applied to the base portion of the fitting convex portion 112c can be reduced. The engagement grooves 112h and 113h shown in the present embodiment are not limited to the above and may be shaped so as to bite each other.
Further, the safety devices 100X and 100Y are provided with cushioning materials 112g and 113g. Thereby, the main body portions 111X and 111Y rotate due to the operator's falling, and the impact when the end portions of the main body portions 111X and 111Y collide with the support member 13 can be reduced.

  The loose fitting member 110Y of the safety device 100Y is configured to be easily moved by an operator while moving up and down the stairs. The elastic members 112i and 113i are attached to the inner wall surface of the main body 111Y so that the handrail 10 can be used as an auxiliary handrail even when held in the hand. Thereby, when going up the stairs, the body part 11Y can be pressed against the handrail frame 11 and pulled up from below, and the body can be pulled up from below, and when going down the stairs, the body can be pushed forward to move the body forward. It can be.

Further, when the loose fitting member 110Y is moved in the handrail frame portion 11, the operator manually moves the main body portion 111Y from the handrail frame portion 11 so that the elastic members 112i and 113i do not hinder the movement. Lift up with. In the present embodiment, the finger-hanging portion 114 is provided so that the operator does not have to hold the main body portion 111Y by applying force to the finger, thereby reducing the burden on the operator. The locking member 117Y and the holding portion 119Y are provided so as not to obstruct the operator when holding the main body portion 111Y by hand.
When the loosely fitting member 110Y is held by hand like the safety device 110Y, the operator only has to move the support member 13 through the gap 118, so that the loosely fitting member such as the balancer described above is used. Since a function that prevents the rotation of 110Y is not required, the manufacture is easy.

The shape, size, and the like of each part of the safety device 100, 100X, 100Y are not limited to the configuration shown in the first embodiment. The main body portions 111, 111X, and 111Y are contacted by the joining members 112, 112X, and 112Y and the joining members 113, 113X, and 113Y on surfaces that are parallel to and perpendicular to the central axis direction of the main body portions 111, 111X, and 111Y. However, the present invention is not limited to this, and a surface that intersects the central axis direction may be used. The joining members 112, 112X, 112Y and the joining members 113, 113X, 113Y are individually covered with the handrail frame member 11 and joined to each other, so that the handrail frame portion 11 can be fitted. Any structure that does not fall off from 11 is acceptable.
In the present embodiment, the cross section perpendicular to the central axis direction of the main body portions 111, 111X, and 111Y has a shape that lacks a part of the annular shape (corresponding to the gap portion 118). , 111X, 111Y, the outer periphery and / or the inner periphery of the cross section perpendicular to the central axis direction may be a substantially polygonal shape with a part thereof (corresponding to the gap 118).

  Although the shape of the latching member 130 of Example 1 is a ring shape, what is necessary is just to be able to latch on the safety belt | band | zone 1, for example, a hook shape etc. may be sufficient. Further, the locking members 117 and 117Y are not limited to such a structure as long as the joining member 112 and the joining member 113 or the joining member 112Y and the joining member 113Y are fitted can be maintained. The length of the rope-shaped member 150 may be adjusted according to the operator to use.

  The finger hooking portion 114 of the safety device 100Y is not limited to the configuration described above. The safety device 100Y has a structure in which a thumb is hung. However, for example, if the fitting member 110Y can be firmly held by hand, such a portion may not be provided, and four fingers other than the thumb may be provided. You may make it hang around the base part and the wrist part. The fitting member 110Y can be easily held and moved, and a structure that does not injure the hand when the operator falls is acceptable. Moreover, it is desirable that the handrail installed on either the left or right side of the stairs can be used.

  Further, the safety devices 100 and 100X have been described as pulling the fitting portions 110 and 110X by the rope-shaped member 150 as shown in FIG. 1, but they may be moved by being held by hand like the safety device 110Y. . In that case, since it is not necessary to balance, any of the joining members 112, 113, 112 X, and 113 X may be located above the handrail frame portion 11.

In the first embodiment, the handrail 10 having a circular cross section perpendicular to the central axis direction of the handrail frame portion 11 is described. However, if the handrail frame portion 11 is large enough to fit the main body portions 111, 111X, and 111Y, The cross section may be a rectangle or the like. If the handrail frame 11 is provided not only in a straight line but also in a spiral staircase, the main body 111 may be curved.
Further, if the supporting member attached to the wall is used, the gap 118 may be changed to a desired position. In the case of a handrail 10 having a landing or the like and having a bent portion, the loosely fitting members 110, 110X, 110Y having a size capable of detaching or passing the bent portions 110, 110X, 110Y before and after the bent portion. 110X and 110Y may be used. Further, the shape, size, number, and the like of the rotating body R, the elastic members 112i and 113i, the engaging grooves 112h and 113h, and the like may be changed as appropriate, and are not limited to the present embodiment. You may change according to the shape etc. of the handrail frame part 11. FIG.

  The safety device 200 of the second embodiment has the same shape and configuration as the safety devices 100 and 100Y of the first embodiment, the rope-shaped member 150 and the hooking member 130, and the shapes and configurations of the loosely fitting members 110 and 110Y are different. It is. Specifically, the loosely fitting member 210 of the safety device 200 includes two columnar members having a cross-sectional shape that is substantially halved. Hereinafter, in the case where the cross section of the handrail is rectangular (the handrail 20 in FIG. 7) and in the case of the circular shape (the handrail 10 in FIG. 8), the parts different from those in the first embodiment will be described, and Are denoted by the same reference numerals and description thereof is omitted.

FIG. 7 is a diagram illustrating a relationship between the fitting member 210 of the safety device 200 according to the second embodiment and the handrail 20 having the handrail frame portion 21 having a rectangular cross-sectional view, and (a) is the center of the handrail frame portion 21. An explanatory plan view showing a state in which the fitting member 210 is put on the handrail frame portion 21 as viewed from a direction perpendicular to the axial direction, (b) is an explanatory sectional view of the II portion of (a), (c). Is an explanatory plan view showing a state in which the fitting member 210 is loosely fitted to the handrail frame portion 21 as viewed from a direction perpendicular to the central axis direction of the handrail frame portion 21, and (d) is a JJ portion of (c). FIG.
As shown in FIG. 7, the loose fitting member 210 of the safety device 200 includes a main body portion 211 composed of two members and a holding portion for holding a rope-like member 150 provided on the outer wall surface of the slide outer member 212. 219. The main body 211 has a columnar slide outer member 212 whose cross section is substantially half of an annulus, and the inner peripheral wall and outer peripheral wall of the slide outer member 212 have substantially the same shape. It consists of two members, a columnar inner slide member 213, which is slightly smaller in cross-section and shaped like a half of an annulus.

  As shown in FIGS. 7A and 7C, the slide outer member 212 has two elongated holes that are perpendicular to the central axis direction at the substantially central portions on the upper side and the lower side in plan view, respectively. A slit 214 is provided. At both ends of each slit 214, locking holes 214a and 214b in which the gaps of the slits 214 are widened are provided.

The inner slide member 213 is rotatably provided so as to overlap the inner side of the outer slide member 212. Specifically, the inner slide member 213 is provided with a protrusion (not shown) that is slidably engaged with the slit 214 of the outer slide member 212. Further, a locking tool 215 provided so that a protruding locking piece 215a that can be pushed in the direction of the central axis of the main body 211 is opposed to the end is fixed. The locking member 215 of the slide inner member 213 is prevented from rotating by the locking pieces 215 a in the locking holes 214 a and 214 b at both ends of the slit 214.
Moreover, although mentioned later for details, the suppression part 213a is provided in the one end part of the slide inner member 213 which comes up when it is made to fit in the handrail 20. FIG.

As shown in FIG. 7B, the loosely fitting member 210 of the safety device 200 covers the handrail frame portion 21 of the handrail 20, and then the slide outer member 212 is rotated counterclockwise (x direction) to move the slide inner member 213. Is rotated in the clockwise direction (y direction) to be fitted to the handrail frame portion 21 as shown in FIG.
At this time, in the state shown in FIG. 7A, the latching piece 215 a of the latching tool 215 fixed to the slide inner member 213 is a slit provided on the slide outer member 212 in the state where it is covered with the handrail frame portion 21. It is locked by a locking hole 214a of 214. Therefore, the locking piece 215a is removed from the locking hole 214a, and the overlapping slide outer member 212 and ride inner member 213 are rotated in opposite directions. And as shown in FIG.7 (c), the state which fitted the main-body part 211 to the handrail 20 can be maintained by locking the locking piece 215a of the locking tool 215 to the locking hole 214b.

  As shown in FIGS. 7C and 7D, the base portion of the holding portion 219 becomes the upper side in the vertical direction of the slide outer member 212 when the main body portion 211 is fitted to the handrail frame portion 21 of the handrail 20. It is fixed to the approximate center of the position. Since the shape of the holding part 219 and the relationship with the rope-shaped member 150 are the same as those of the holding part 119 of the safety device 100 according to the first embodiment, a description thereof will be omitted.

Next, the relationship such as the size of each component will be described with reference to FIG.
As shown in FIG. 7B, the inner wall surface of the cross section of the slide inner member 213 has a slightly larger diameter than the diameter of the circle having the vertices of the handrail frame 21 having a rectangular cross section on the circumference. It has a semicircular shape. Further, as shown in FIG. 7D, the gap 118 formed when the main body 211 is fitted to the handrail 20 is smaller than the shortest width in the cross section of the handrail frame 21, and the main body 211 Is formed so as not to fall out of the handrail frame portion 21. Further, the gap portion 118 is sized so that the support member 13 of the handrail 20 can pass through, so that the operator can move smoothly during normal lifting and lowering.

  As shown in FIG. 7 (d), a restraining portion 213a is provided at one end portion of the in-slide member 213 that is positioned upward when fitted into the handrail 20 or the like. When the locking piece 215a is locked to the suppression hole 214b as shown in FIG. 7 (c) and the holding portion 219 is positioned on the upper side in the vertical direction, the suppression portion as shown in FIG. 7 (d). 213a is formed so as to be cut out so as to be a horizontal straight line in a sectional view. Therefore, the fitting member 210 can be loosely fitted to the handrail 20 such that the restraining portion 213a is placed on one end of the upper surface of the outer wall of the handrail frame portion 21 and the other end is in contact with the inner wall of the slide inner member 213. Then, if necessary, an appropriate weight is given to one end portion side (the left side in the drawing) located below when the slide outer member 212 is fitted to the handrail 20 or the like. Although not shown, a balancer or the like may be provided.

With this configuration, even if the rope-like member 150 is pulled during normal movement, the main body 210 is prevented from rotating clockwise due to the weight of the slide outer member 212, and is counteracted by the restraining portion 213 a. Since the main body 210 can be prevented from rotating clockwise, the operator can move smoothly. When the operator falls and the weight is applied to the holding portion 219, a force much stronger than the weight of the slide outer member 212 is applied. In the handrail frame part 21, it rotates clockwise so that the space | gap part 118 may come outside a staircase. Therefore, similarly to the safety devices 100, 100X, and 100Y of the first embodiment, after the rotation, the downward movement of the fitting member 210 is hindered by the support member 13, and the operator can be prevented from falling. (See FIGS. 4C and 4D).
In addition, since the usage method of the safety device 200 of Example 2 is substantially the same as the safety device 100 of Example 1, it abbreviate | omits.

FIG. 8 shows the relationship between the loosely fitting member 210X of the safety device 200X, which is a modification of the safety device 200 of the second embodiment, and the handrail 10 having the handrail frame portion 11 having a circular shape in section, and the center of the handrail frame portion 11 It is explanatory side view at the time of visually recognizing perpendicularly to an axial direction from the stairs lower direction, (a) is a figure showing the state where covering member 210X was put on handrail frame part 11, (b) is fitting member 210X. Are views showing a state in which the fitting member 210X is loosely fitted to the handrail frame portion 11, and (c) and (d) are views showing a state in which the fitting member 210X rotates due to the fall of the operator or the like. In addition, about the same structure as the safety gears 100 and 200, the same code | symbol as FIGS.
Hereinafter, only parts of the safety device 200X that are different from the safety device 200 (FIG. 7) will be described with reference to FIG.

  The safety device 200 can be used as it is in the handrail 10 having the handrail frame portion 11 having a circular cross section. As described in the safety device 100 of the first embodiment, the gap portion 118 is formed on the lower side in the vertical direction. It can be configured and used so that an operator can move up and down the stairs while keeping it. The safety device 200X shown below can be moved more smoothly by performing a simple process on the handrail 10 having a circular cross section, as in the case of a handrail having a rectangular cross section shown by the safety device 200. It is a thing.

The safety device 200X differs from the safety device 200 only in the shape of one end side located outside the staircase of the outer slide member 212 and the inner slide member 213, and the basic structure is not changed.
Specifically, as shown in FIG. 8, the slide inner member 213 </ b> X is a columnar member whose cross section is a substantially half of an annular shape, and the restraining portion 213 a as in the first embodiment is not formed. . Further, the outer slide member 212X has an edge portion f extending so as to be bent in the central axis direction on one end side located on the outer side of the staircase when the main body portion 211X is put on the handrail frame member 21X.
The handrail frame portion 11 of the handrail 10 has a convex portion g shaped like a fan having a central angle of 90 degrees on the upper side of the outer side of the stairs (vertical cross-section At a position inclined approximately 40 degrees with respect to the upper side in the direction).

As shown in FIG. 8A, the safety device 200 </ b> X is covered with a handrail 10 having a circular cross section having a convex portion g. Then, the outer slide member 212 </ b> X and the inner slide member 213 </ b> X are rotated as described in the safety device 200 to loosely fit the main body portion 211 </ b> X to the handrail frame portion 11.
During normal movement, as shown in FIG. 8B, the end of the slide inner member 213X on the outside of the staircase is received by the convex portion g. An effect can be obtained.
Further, when the holding member 219 is pulled and rotated due to the operator falling or the like, as shown in FIG. 8C, the support member 13 prevents the operator from falling down as in the safety device 200. it can. Further, as shown in FIG. 8D, the edge f of the outer slide member 212X rides on the convex portion g, and the inner wall surface of the inner slide member 213X is pressed against the handrail frame portion 11, whereby the rotation speed and The downward movement speed can be suppressed.

Unlike the first embodiment, the safety devices 200 and 200X according to the second embodiment slide two members (the slide outer members 212 and 212X and the slide inner members 213 and 213X) and loosely fit the handrails 20 and 10. . In addition to the effects described in the first embodiment, there are the following effects.
Since the safety device 100 according to the first embodiment fits two members by the fitting convex portion 112c and the fitting concave portion 112d, a certain length is required. On the other hand, the safety devices 200 and 200X are formed in a substantially C shape by sliding two columnar members having different radii and having a substantially half shape of an annulus having a central angle of approximately 180 degrees in a cross-sectional view. Therefore, the length of the main body 211 in the central axis direction can be shortened. Therefore, according to the safety devices 200 and 200X, it is smaller than the safety device 100 of the first embodiment, so that it is easy to move, and the slide inner members 213 and 213X are stacked on the inner side of the slide outer members 212 and 212X to be compact and carried. This can reduce the burden on the operator. Moreover, it does not take a place for storage and is economical.

In the safety devices 200 and 200X, the unevenness and space of the inner wall of the member, which is formed when the outer slide members 212 and 212X and the inner slide members 213 and 213X are loosely fitted, can be handrailed 20 so that the worker can move more smoothly. , 10 according to the shape.
Specifically, by providing the safety member 200 with the restraining portion 213a on the slide inner member 213 and the safety device 200X with the convex portion g on the handrail 20X, the balance of the loosely fitting members 210 and 210X can be maintained more stably. it can.

FIG. 9 is an explanatory side view when the handrail 10X provided with the receiving portion h and the loosely-fitting member 210X of the safety device 200X are viewed from the lower side of the stairs, perpendicular to the central axis direction of the handrail frame portion 11X. It is a figure which shows the state which loosely fitted the fitting member 210X to the handrail frame part 11X. In addition, the same code | symbol as FIGS. 1-2, 8 is attached | subjected about the same structure as the safety gear 100,200X.
In the safety device 200X, instead of providing the convex portion g, as shown in FIG. 9, a receiving portion h may be provided like a handrail frame portion 11X of the handrail 10X. The receiving portion h is formed by cutting at approximately the same position as the convex portion g of the handrail 20X so as to have a step that lowers the staircase side, and receives one end portion on the staircase side of the slide inner member 213X. Thereby, the effect mentioned above can be acquired.

The shape and size of each part of the safety device 200, 200X, the slide mechanism, and the like are not limited to the configuration shown in the second embodiment. The latch member 130 as shown in the first embodiment may be used. The shape, size, and the like of the suppressing portion 213a, the edge portion f, and the protruding portion g are not limited to the present embodiment.
Further, as shown in the first embodiment, a rotating body R, R 112f and 113f, cushioning materials 112g and 113g, and the like may be provided as appropriate.

The safety devices 200 and 200X can be used with the up and down directions reversed even when the handrails 20, 10, and 10X are installed on the right side of the stairs. In that case, it is necessary to provide the convex part g of the handrail 10 and the receiving part h of the handrail 10X in the upper part outside the staircase as described above.
Further, as in the first embodiment, an elastic member may be attached to the inner wall surfaces of the main body portions 211 and 211X, and the operator may move the safety devices 200 and 200X by hand when moving up and down the stairs. When the safety device 200, 200X is always held and moved, it is not necessary to take the above-mentioned balance, so that the deterring portion 213a, the edge portion f, and the convex portion g have a function of preventing rotation. Etc. may not be provided. In addition, the inner slide wall member 213 or the like may be built in the slide outer member 212 or the like, so that the step between the inner wall surfaces of the two members when loosely fitted may be reduced.

  FIG. 10 is a diagram illustrating a state where the fitting member 310 of the safety device 300 according to the third embodiment is put on the handrail frame portion 11, and (a) is viewed from a direction perpendicular to the central axis direction of the handrail frame portion 11. An explanatory plan view, (b) is an explanatory sectional view of the KK portion of (a), and (c) is an explanatory sectional view of an LL portion of (a). FIG. 11 is a view showing a state in which the fitting member 310 of the safety device 300 according to the third embodiment is loosely fitted to the handrail frame portion 11, and (a) is a direction perpendicular to the central axis direction of the handrail frame portion 11. (B) is an explanatory sectional view of the MM part of (a), (c) is an explanatory sectional view of the NN part of (a). Note that the upward direction of the drawing is the upper side of the staircase, and the same components as those of the safety devices 100 and 100X are denoted by the same reference numerals as those in FIGS. Moreover, since the rope-shaped member 150 and the hooking member 130 have the same shape and configuration as the safety device 100, illustration and description thereof are omitted.

  The safety device 300 according to the third embodiment is different from the safety device 100 according to the first embodiment in the shape and configuration of the loose fitting member 110. Specifically, the loose fitting member 310 of the safety device 300 includes a braking member having a function of a ratchet or the like that restricts the operation direction to one direction, and can be used without being held by an operator. It can also be done. Hereinafter, the loose fitting member 310 different from that of the first embodiment will be described, and the slide mechanism is the same as that described in the second embodiment, and thus illustration and description thereof will be omitted.

  As shown in FIG. 10, the loose fitting member 310 of the safety device 300 is provided on the upper end side from the main body portion 311 including the three members 312, 313 a, and 313 b and the center portion of the outer wall surface of the slide holding member 312. And a holding portion 119 for holding the rope-shaped member 150. The three members 312, 313a, and 313b constituting the main body 311 have a columnar slide holding member 312 whose cross section is substantially half of an annular shape, an inner peripheral wall, and an outer peripheral wall of the slide holding member 312. The columnar slide left member 313a and the slide right member 313b have substantially the same shape and are slightly smaller than the slide holding member 312 and have a cross-sectional shape that is substantially a quarter. The slide left member 313a and the slide right member 313b are provided so as to face each other, and the outer peripheral wall thereof is provided in contact with the inner peripheral wall of the slide holding member 312.

  As shown in FIG. 10A, the slide holding member 312 includes slide holding portions 312a and 312b. The slide holding portion 312a locks the slide left member 313a and the slide right member 313b so as to be rotatable (see FIGS. 10 and 11; the slide mechanism is not shown). In addition, a braking mechanism portion 314 described later is accommodated in a substantially rectangular hollow portion 312b provided on the lower side of the center portion of the slide holding member 312 in plan view.

As shown in FIG. 10C, the braking mechanism unit 314 includes a switching unit 314a, a braking unit 314b, and a lid 314c.
The switching unit 314a includes a connecting unit that interlocks two pawls i and j, and a knob k that is fixed to the central portion and switches pawls i and j to be used.
The lid portion 314c whose upper surface is a curved surface along the slide holding portion 312a holds the switching portion 314a and the braking portion 314b. The knob k is engaged with the lid portion 314c (not shown), and its upper end portion passes through a rectangular hole provided in the center of the lid portion 314c so as to slightly protrude from the peripheral wall surface of the slide holding member 312. Is provided.

  The braking unit 314b has a structure in which the operation direction restricted by the switching unit 314a is switched. Specifically, the braking portion 314b has a substantially cylindrical shape having a peripheral wall whose central portion is gradually smaller than both peripheral portions, and a pressing member l made of an elastic material having a large surface friction coefficient, and both sides thereof. The two types of gears m and n, which are fixed to the projection, are communicated with the communication holes formed at the centers of these three members, and both end portions are bent upward at a right angle and locked by springs. And the shaft portion o. The upper end of the spring of the shaft portion o is fixed to the lid portion 314c. Moreover, the brake part 314b is rotatably attached to the shaft part o.

As shown in FIG. 10A, the slide left member 313a is not seen from the braking mechanism portion 314 housed in the hollow portion 321b of the slide holding member 312 from the lower side of the central portion of the right end edge in plan view. Is cut out in an inverted U shape. In addition, a substantially rectangular hole is provided in the upper and lower portions on the right end side in a plan view, and the rotation mechanism portion 315 is fitted therein. The rotation mechanism portion 315 slides as shown in FIG. A rotating body R provided so as to protrude from the inner wall surface of the left member 313a, and the rotating body R are connected to the rotating body R so that the rotating body R can be moved in a substantially diametrical direction in a cross section perpendicular to the central axis of the main body 311. It consists of a spring s to be locked and a holding body q for holding them.

As shown in FIG. 10, an elastic member 313 i is attached to the inner wall surface of the slide left member 313 a on the right end side in plan view other than the portion where the rotation mechanism unit 315 is disposed.
The slide right member 313b has a symmetrical shape and structure with respect to the vertical plane including the center axis of the slide left member 313a and the main body 311. Therefore, the slide right member 313b is assigned a symbol corresponding to the slide left member 313a. Is omitted. Note that the centers of the four rotating bodies R arranged on the slide left member 313a and the slide right member 313b are on the same plane and are located at the vertices of a rectangle.

  As shown in FIG. 10, the safety device 300 according to the third embodiment covers the main body 311 on the handrail frame 11 of the handrail 10 and then pulls out the slide left member 313a and the slide right member 313b as shown in FIG. The body portion 311 is loosely fitted to the handrail frame portion 11. By pulling out the slide left member 313a and the slide right member 313b, the gap portion 118 becomes smaller than the diameter of the handrail frame portion 11, and the main body portion 311 falls off the handrail frame portion 31 as in the first and second embodiments. Can be prevented.

As described above, the slide holding member 312 is provided with the braking mechanism unit 314 that restricts the operation direction to only one direction by the switching unit 314a. Further, as shown in FIGS. 10B and 11B, the rotating member R of the four rotation mechanism portions 315, that is, the slide left member 313a and the slide right member 313b, has an elastic member 313i attached thereto. It is arrange | positioned so that it may protrude from the wall surface to form. Therefore, when the safety device 300 is moved by hand or used without being held by hand, as shown in FIGS. 11B and 11C, only the rotating body R and the braking portion 314b are provided by the handrail frame portion 11. It touches the outer peripheral wall.
And as shown in FIG.10 (c), when the switching part 314a is located in the left side, if the force is applied to the safety device 300 as assistance at the time of stair climbing, the springs of the rotating body R and the braking part 314b will shrink, The pawl j meshes with the gear n. In this case, movement to the upper part of the staircase is possible, but movement in the reverse direction is limited. At this time, when the switching portion 314a is located on the left side, the pawl i is meshed with the gear m and can move to the lower part of the stairs, but the movement to the upper part of the stairs is restricted. .

FIG. 12 is an explanatory cross-sectional view of the fitting member 310 of the safety device 300 according to the third embodiment cut along a plane perpendicular to the central axis direction of the handrail frame portion 11, and (a) is when the worker climbs the stairs. The figure which shows the state which held the fitting member 310 by hand, and pressed on the handrail frame part 11, (b) is a figure which shows a mode that the fitting member 310 is rotating by fall of an operator etc., (c). These are figures which show the state by which the movement of the main-body part 311 of the fitting member 310 was blocked | prevented by the handrail frame part 11. FIG.
Hereinafter, the usage method of the safety device 300 will be described with reference to FIGS.

First, a case where the safety device 300 is used without being held like the safety device 100, 100X of the first embodiment will be described.
As shown in FIGS. 11 (b) and 11 (c), when the operator goes up and down the stairs after loosely fitting to the handrail frame portion 11, the four rotating bodies R and the brake portion 314 b are arranged around the handrail frame portion 11. By rotating on the wall surface, the loose fitting member 310 moves the handrail frame portion 11. Therefore, the effect as shown by the safety device 100X of the first embodiment, which is moved by the rotating body R, can be obtained. In addition, it is the same as that of the safety gears 100 and 100X of Example 1 to be configured so that the gap 118 is kept on the lower side in the vertical direction.

Next, a case where the safety belt 300 is used in the hand as in the case of 100Y of the first embodiment will be described.
After loosely fitting the safety device 300 to the handrail 10 as described above, the operator installs the loose fitting member 310 so that the portion where the braking mechanism 314 is disposed is close to the base of the thumb of the palm of the left hand. Have. When the worker uses the handrail 10 as an auxiliary handrail when going up the stairs, the loose fitting member 310 is pulled against the handrail frame 11 of the handrail 10 to pull up the body. At this time, as shown in FIG. 12A, when the loosely fitting member 310 is pressed against the handrail frame 11, the rotating body R contracts the spring s and moves into the holding body q. Further, the spring of the brake part 314b is contracted, the pawl j is engaged with the gear n, and the rotation of the brake part b is stopped. Therefore, the handrail frame portion 11 is in close contact with the elastic member 313i attached to the inner walls of the slide left member 313a and the slide right member 313b and the pressing member l of the brake mechanism portion 314. Accordingly, the downward movement of the stairs (downward in FIG. 11A) is suppressed by the frictional force of the elastic member 313i and by the pressing member 1 having the braking mechanism as described above.
Further, when the worker simply moves the position of the loose fitting member 310 when going up the stairs, it is not necessary to apply a force to the loose fitting member 310, so that it is moved by the rotation of the four rotating bodies R and the braking portion b. Just do it. When the stairs are fully climbed, the slide left member 313a and the slide right member 313b can be accommodated and easily removed from the handrail frame portion 11.

When going down the stairs, the brake mechanism 314 is attached to the handrail frame 11 so that the braking mechanism 314 comes above the holding part 119 in the opposite direction to when going up the stairs. This is because the worker can hold the loosely fitting member 310 so that the portion where the braking mechanism 314 is disposed is located near the base of the thumb of the palm of the right hand. Then, the knob k of the braking mechanism 314 is switched so that the pawl i and the gear m are engaged so that the downward movement of the stairs (the upward direction in FIG. 11A) is suppressed. . When an operator uses the handrail 10 as an auxiliary handrail, the loosely fitting member 310 is pressed against the handrail frame 11 of the handrail 10 in order to support the body. Therefore, the body can be supported by the above-described pressing member 1 of the braking mechanism 314 and the frictional force of the elastic member 313i.
In addition, when the operator simply moves the position of the loose fitting member 310 when going down the stairs, the process after going down the stairs is the same as when going up the stairs.

Next, a case where an operator falls over when moving up and down the stairs will be described.
When the worker falls, the weight of the worker is applied to the holding unit 119. This is much stronger than the force that the operator applies to the loosely fitting member 310 as an aid in raising and lowering. Therefore, as shown in FIGS. 12B and 12C, the fitting member 310 rotates clockwise so that the gap portion 118 is located outside the staircase. Therefore, similarly to the safety devices 100, 100X, and 100Y of the first embodiment, after the rotation, the downward movement of the fitting member 210 is hindered by the support member 13, and the operator falls down the stairs. This can be prevented (see FIGS. 4C and 4D).
In addition, as shown in FIG. 12B, the elastic member 313i of the slide left member 313a contacts the outer wall surface of the handrail frame portion 11 and the frictional force acts, as shown in FIG. Similar to the tool 100Y, the rotation speed and the downward movement speed can be suppressed.

The safety device 300 of the third embodiment has the following effects in addition to the effects of the rotating body R and the elastic members 112i and 113i described in the first embodiment and the effects of the slide structure described in the second embodiment. .
In the safety device 300 of the third embodiment, unlike the first and second embodiments, the loosely fitting member 310 includes a braking mechanism 314. Therefore, when the operator moves while holding the loosely fitting member 310 in his / her hand, the raising / lowering assistance can be more reliably performed. Further, when the loose fitting member 310 is moved without being held by hand, the loose fitting member 310 is prevented from turning due to the friction of the retaining member l that is rotatably supported by the braking mechanism portion 314. And it can be moved smoothly.
In addition, a rotating body R that can move up and down is provided, and the elastic member 313i is configured to act only when necessary. Therefore, unlike the safety device 100Y of the first embodiment, when the loose fitting member 310 is moved, it is only necessary to lightly move it with a hand, so that the burden on the operator is small. Furthermore, when the braking mechanism unit 314 and the elastic member 313i come into contact with the outer wall surface of the handrail frame unit 11 when the vehicle falls over, the falling speed can be relaxed, and the impact received by the operator can be reduced.

The shape and size of each part of the safety device 300, the slide mechanism, etc. are not limited to the configuration shown in the third embodiment, as shown in the first and second embodiments. The size and configuration are not limited to this.
In this embodiment, when used as an ascending / descending aid, the braking direction is switched by turning the loose fitting member 310 upside down between when going up and down the stairs. This is because it is placed between the thumb and forefinger when grasped by a hand so that the holding portion 119 does not get in the way and a place where force is applied is taken into consideration.

  In the present embodiment, when the handrail frame portion 11 is used as an auxiliary handrail, the braking mechanism portion 314 is disposed at the position where the most force is applied, but the length of the loosely fitting member 310 in the central axis direction is increased. If the brake mechanism 314 is arranged at the center, or the holding part 119 is provided at the upper end and the lower end of the main body 311 so that it can be attached and detached like the rope-like member 150X of the first embodiment, it may go up. The case can be used in the same direction. Also, the braking mechanism 314 needs only one set of pawls and gears. Moreover, it is good also as a structure which uses the brake mechanism part 314 only when it descends with many fall accidents. In addition, the position where the knob k protrudes is not limited to the present embodiment, and may be a position that does not hit the palm when the loose fitting member 310 is gripped by hand.

The configuration of the braking mechanism unit 314 and the rotation mechanism unit 315, the shape and position of the elastic member 313i are not limited to this, and the safety device 300 can be used only for prevention of falling, or can be used as an assist for raising and lowering the operator. Any configuration that can also be used.
Although not shown in the present embodiment, the slide left member 313a is provided with a braking portion that restricts the downward movement of the stairs, and acts when the operator falls down and is pressed against the handrail frame portion 11. If so, it is possible to more effectively prevent the operator from falling off the stairs.

  As shown in the safety device 200X, if the handrail 10 is provided with the convex portion g and the receiving portion h, and the slide left member 313a and the slide right member 313b are provided with portions corresponding thereto, the loose fitting member 310 is held by hand. Even when there is not, the operator can move smoothly.

The present invention is not limited to the embodiment of the invention described above, and is not limited to the configuration shown in the drawings and does not depart from the gist of the present invention as long as the handrail and the worker can be connected by a safety device and can be prevented from falling. Of course, various changes can be made within the range.
Further, if the handrail has a structure in which the convex portion g or the receiving portion h is not provided, the handrail installed obliquely on the stairs or the like is prevented from falling to the outside of the stairs, or the horizontal handrail installed at a high place or the like. Can be used to prevent falling from high places. For example, when a handrail on a staircase is connected to a handrail on a high place up the stairs, the work can be performed without removing the safety device from the handrail, and the stairs can be directly lowered after the work is finished.

  The safety device of the present invention can be used not only at a work place but also at various places where handrails are installed to prevent falling or falling.

1 Safety belt 100, 100X, 100Y, 200, 200X, 300 Safety device 110, 110X, 110Y, 210, 210X, 310 Loose fitting member 111, 111X, 111Y, 211, 211X, 311 Main body 112, 113, 112X, 113X , 112Y, 113Y Joint member 212, 212X Slide outer member 213, 213X Slide inner member 312 Slide holding member 313a Slide left member 313b Slide right member 118 Gap portion 119, 119X, 119Y, 219 Holding portion 130 Hooking member 150, 150X Rope Shaped member 10, 10X, 20 Handrail 11, 11X, 21 Handrail frame 13 Support member

Claims (8)

It is a safety tool that prevents the operator from falling or falling by attaching the handrail and the safety belt worn by the operator and connecting the operator and the handrail.
The safety device (100, 100X, 100Y)
A substantially cylindrical main body (111, 111X) having a gap (118) in the longitudinal direction, which is detachably attached to the bar-shaped handrail frame (11, 11X, 21) of the handrail (10, 10X, 20). , 111Y), a loose attachment member (110, 110X, 110Y),
A rope-like member (150, 150X) having one end attached to the loose member;
A hook member (130) attached to the other end of the rope-like member and hooked to the safety belt (1),
The main body portion is composed of a plurality of joining members (112, 113, 112X, 113X, 112Y, 113Y),
The joining member includes a fitting body portion (112a, 113a) having a shape cut by a cutting surface connected from a peripheral edge portion of one side surface of the main body portion to a peripheral edge portion of the other side surface, and the cutting surface and / or the cutting surface. A joint portion (112c, 112d, 113c, 113d, 112h, 113h, 117, 117Y) provided at the peripheral edge of the surface,
The body part is loosely attached to the handrail frame part so as to be movable by joining the plurality of joining members by the joining part,
The interval between the gaps formed by joining is smaller than the shortest length and larger than the width of the support member (13) that supports the handrail in the cross section perpendicular to the central axis direction of the handrail frame portion. A safety device attached to a handrail characterized by that. It is a safety tool that prevents the operator from falling or falling by attaching the handrail and the safety belt worn by the operator and connecting the operator and the handrail.
The safety device (200, 200X, 300)
A substantially cylindrical main body (211, 211X) having a gap (118) in the longitudinal direction, which is detachably attached to the bar-shaped handrail frame (11, 11 X, 21) of the handrail (10, 10 </ b> X, 20). , 311), loose attachment members (210, 210X, 310),
A rope-like member (150, 150X) having one end attached to the loose member;
A hook member (130) attached to the other end of the rope-like member and hooked to the safety belt (1),
The main body is composed of a plurality of rotatable columnar members (212, 212X, 213, 213X, 312, 313a, 313b) whose cross section perpendicular to the central axis direction has an arc shape with a central angle of 90 degrees or less,
The columnar member is slid so as to rotate, and is fixed to the handrail frame portion by being fixed by fixing portions (214a, 214b, 215, 215a),
The gap between the gaps is smaller than the shortest length in the cross section perpendicular to the central axis direction of the handrail frame, and larger than the width of the support member (13) supporting the handrail. Engaging safety device. The handrail (10, 10X, 20) is a handrail installed along the stairs,
When the operator falls, the loose member (110, 110X, 110Y, 210, 210X, 310) rotates, and the gap (118) moves to the outside of the staircase, and the support member (13). 3. The handrail according to claim 1 or 2, wherein the main body (111, 111X, 111Y, 211, 211X, 311) is configured to restrict movement of the main body portion downward from the stairs. Safety equipment.   A substantially plate-like elastic member (112i, 113i, 313i) having a large friction coefficient is affixed to the surface of the inner wall surface of the loose member (110, 110X, 110Y, 210, 210X, 310). When the operator presses the loose member on the handrail frame portion (11, 11X, 21) by the member, the movement of the loose member is limited. Item 4. A safety device attached to the handrail according to any one of Items 1 to 3.   A plurality of rotating bodies (R) are disposed on the inner wall surface of the loose member (110, 110X, 110Y, 210, 210X, 310), and the loose member is rotated by rotating the rotary body. The safety device attached to the handrail according to any one of claims 1 to 3, wherein the safety device is configured to move a handrail frame portion of the handrail. In the upper part of the inner wall surface of the loose member (310),
A rotation mechanism portion (315) including a stretchable elastic member (s) having stretchability and a rotating body (R) continuously connected by the stretchable elastic member is disposed,
Usually, a part of the rotating body protrudes from the surface of the substantially plate-like elastic member (313i),
When the operator presses the loosening member against the handrail frame portion (11), the protruding rotating body is configured to move toward the outer wall surface of the loosening member. A safety device that is attached to the handrail according to claim 4.   A brake mechanism (314) having gears (m, n) and pawls (i, j) for restricting the operation direction to one direction is disposed on the upper inner wall surface of the loose member (310). The safety device engaged with a handrail according to any one of claims 3 to 6, wherein the safety member is configured to restrict movement of the loose attachment member downward in the stairs.   On the inner peripheral portion of the main body portion (211) of the loose attachment member (210) and / or the outer wall surface of the handrail frame portion (21), the observing member is parallel to the central axis direction of the handrail frame portion. 8. A deterrent unit (213 a, g) for restricting rotation in a direction opposite to the direction of rotation when the operator falls is provided. 11. Safety equipment that is attached to the handrail described in 1.