JP7222621B2 - handrail device - Google Patents

Description

TECHNICAL FIELD The present invention relates to a handrail device, and more particularly to a handrail device that is attached to H-bars, scaffolding boards, and other members to be attached to buildings, structures, and construction sites to ensure the safety of construction work.

Generally, handrail devices are provided corresponding to construction positions in the construction, construction work, and renovation work of structures such as high-rise buildings and bridges.

This handrail system consists of a plurality of vertical pillars erected on H-steel flanges, scaffolding boards, etc. via clamping members, and horizontally extending handrails attached to these vertical pillars. It is designed to ensure the safety of workers walking on scaffolding boards.

As such a handrail device, for example, one disclosed in Patent Document 1 has been developed and used. The handrail device of Patent Document 1 includes a plurality of vertical pillars attached to the H steel via a holding member and provided at predetermined intervals along the longitudinal direction of the H steel, and a handrail provided on the side opposite to the holding member of each vertical pillar. and a handrail connecting member for connecting the handrails.

The handrail connecting member has a cylindrical body with an open bottom, and a pair of wedge guides provided at the lower end of each end of the cylindrical body and into which wedges can be inserted. The handrails are connected to each other by inserting the handrails and inserting wedges into the wedge guide portions with the ends of the handrails opposed to each other.

JP 2018-44343 A (see FIG. 1, FIG. 7, paragraph 0055, abstract)

The handrail device disclosed in Patent Literature 1 can be used in various places because the handrail can be added according to the length of the attached member such as H steel or scaffolding board.

However, although this handrail device does not have any structural defects, it is desired to improve the following problems.

That is, since the handrail connecting member of this handrail device requires a wedge to be inserted into the wedge guide provided at the lower end of the cylindrical body, the wedge can be driven in and pulled out using a tool each time the handrail is attached or detached. It is necessary, and the operation of attaching and detaching the wedge is troublesome.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a handrail device that facilitates the attachment and detachment of handrails.

In order to achieve the above object , the handrail device of the present invention comprises at least two vertical posts arranged side by side, a handrail mounting member provided on each of the vertical posts, and a handrail mounting member held by each of the handrail mounting members. and a handrail connecting member for connecting the handrails held by the adjacent handrail mounting members, the handrail connecting member comprising a cylindrical body and a pair of openings formed in the cylindrical body. and a pair of handrail positioning members facing each of the openings, each handrail positioning member having a stop pin and a spring biasing the stop pin toward the opening. and the handrail has a hole facing the opening when inserted into the cylindrical body.

According to the present invention, the following effects can be achieved.
A) Since the stop pin is provided opposite to the opening of the barrel, the stop pin is automatically biased by the spring to the opening provided in the barrel and the hole provided at the end of the handrail. As a result, the tip of the handrail can be fixed while being automatically positioned in the cylindrical body, so that the positioning operation of the handrail is easy and the speed of assembling work of the handrail device can be increased.
B) When removing the handrail, for example, it is sufficient to simply pull the stop pin toward the outside of the opening against the spring with a finger, and no tools are required, so operability and economic efficiency can be improved.
C) It suffices for the handrail positioning member to have a stop pin and a spring.

1 is a perspective view of a handrail device according to the present invention; FIG. FIG. 2 is a partially enlarged perspective view of the handrail device of FIG. 1; (A) is a partially cutaway front view of a handrail connecting member according to one embodiment, and (B) is a partial vertical cross-sectional side view of the handrail connecting member according to one embodiment . (A) is a partially cutaway front view of the cylinder and the guide cylinder in the handrail connection member shown in FIG. 3, and (B) is a partial vertical cross-sectional side view of the cylinder and the guide cylinder in the handrail connection member shown in FIG. is. (A) is a partially cutaway front view of a handrail connecting member according to another embodiment, and (B) is a bottom view of the handrail connecting member according to another embodiment . 6A is a partially cutaway front view of a cylindrical body in the handrail connecting member shown in FIG. 5, and FIG. 6B is a bottom view of the cylindrical body in the handrail connecting member shown in FIG . (A) is a plan view of the stop pin shown in FIG. 5, and (B) is a front view of the stop pin shown in FIG . (A) is a front view of the spring shown in FIG. 5, and (B) is a bottom view of the spring shown in FIG . (A) is a partially cutaway front view of a handrail connecting member according to still another embodiment, and (B) is a bottom view of the handrail connecting member according to still another embodiment . 10A is a partially cutaway front view of a cylindrical body of the handrail connecting member shown in FIG. 9, and FIG. 10B is a bottom view of the cylindrical body of the handrail connecting member shown in FIG. 9 ; (A) is a plan view of the stop pin shown in FIG. 9, and (B) is a front view of the stop pin shown in FIG . (A) is a front view of the spring shown in FIG. 9, and (B) is a bottom view of the spring shown in FIG .

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.

1 to 4 show a handrail device according to one embodiment of the present invention, FIGS. 5 to 8 show a handrail device according to another embodiment of the present invention, and FIGS. 9 to 12 show still another handrail device. 1 shows a handrail device according to an embodiment.

The handrail device T according to each embodiment, as shown in FIG. To prevent a worker from falling from this H steel W when it is used as a scaffold. In addition, this handrail device T may be attached to a scaffold board provided at a building or construction site.

Furthermore, since it is difficult to provide a single long handrail when the attached member such as H steel W or scaffolding board is long, this handrail device T can be attached to various members by joining a plurality of handrails. It was developed with the main purpose of being compatible with

As shown in FIG. 1, the basic structure of the handrail device T according to each embodiment consists of at least two vertical pillars 1, 1 arranged adjacent to each other and handrail mounting members provided on each of the vertical pillars 1, 1. 2, a pair of handrails 3a and 3b held by the handrail mounting members 2, and a handrail connecting member 4 for connecting the handrails 3a and 3b held by the adjacent handrail mounting members 2 and 2. There is.

As shown in FIGS. 2 to 4, the handrail connecting member 4 includes a cylindrical body 5, a pair of openings 5C, 5C formed in the cylindrical body 5, and facing the respective openings 5C, 5C. It is composed of a pair of handrail positioning members 6, 6 provided.

Each handrail positioning member 6 has a stop pin 7 and a spring 8 that biases the stop pin 7 toward the opening 5C. It has a hole 3c facing 5C.

Each part will be described in detail below. As shown in FIG. 1, the vertical strut 1 consists of a strut body A and a clamping member B provided at the base end of the strut body A and attached to the H steel W by clamping the flange F of the H steel W. Further, a reinforcing member C made of a plate spring having a trapezoidal cross section is attached to an outer peripheral position of the supporting column body A close to the holding member B. As shown in FIG.

More specifically, the reinforcing member C includes a main body portion C1 having a trapezoidal cross section and both ends of which are welded to the outer surface of the support main body A; have In this example, the main body portion C1 has a trapezoidal cross section, but may have a C-shaped cross section.

This reinforcing member C prevents bending or breakage of the vertical support 1 even if a load is applied in the direction of tilting the handrail device T outward and a rotational moment is generated on the base end side of the vertical support 1. be.

The clamping member B includes a clamping piece B1 having a U-shaped cross section and a pair of plate portions B4, B4 connected to the base end of the column main body A and facing each other, and a shaft penetrating through the plate portion B4 on the column main body A side. It is composed of a bolt B2 provided movably in direction and a plate B3 provided at the lower end of the bolt B2.

Then, when the holding piece B1 is inserted into the flange F of the H steel W and the bolt B2 is tightened, the bolt B2 moves downward in the figure, and the flange F is held between the plate portion B4 and the plate B3 on the lower side in the figure. Therefore, the vertical strut 1 can be erected on the H steel W.

Next, as shown in FIG. 1, the handrail mounting member 2 is detachably fitted to a cylindrical portion 2A provided at the upper end of each vertical support 1 and through which the handrail 3a (3b) can be inserted. The handrail 3a (3b) is attached to the handrail by pressing the wedge K between the cylindrical portion 2A and the handrail 3a (3b) while the handrail 3a (3b) is inserted into the cylindrical portion 2A. It is held by member 2 .

Further, as described above, the handrail connecting member 4 includes a cylindrical body 5 into which the handrail 3a (3b) can be inserted, a pair of openings 5C, 5C formed in the cylindrical body 5, and openings 5C, 5C. and a pair of handrail positioning members 6, 6 provided facing each other.

Specifically, as shown in FIG. 4, a peep hole 5A is formed in the center of the cylindrical body 5 in the axial direction, and openings 5C and 5C are formed on the left and right sides of FIG. ing. As shown in the figure, the cylindrical body 5 has a square cross section. When the cross-sectional shape of 3b is circular, it is formed to have a cylindrical cross-section.

Next, a handrail positioning member 6 according to one embodiment of the present invention will be described with reference to FIGS. 2 to 4. FIG.

The handrail positioning member 6 shown in FIGS. 2 to 4 has a U-shaped cross section having a bottom portion 10a provided to cover the opening portion 5C of the cylindrical body 5 and a pair of side portions 10b, 10b rising from both ends of the bottom portion 10a. a case 10, a stop pin 7 which is retractably inserted into a pin insertion hole 11 formed in a bottom portion 10a, and a spring 8 which biases the stop pin 7 toward the opening portion 5C.

The stop pin 7 has a pin body 7A that can be inserted into the opening 5C through the pin insertion hole 11, and a pair of locking pins 9, 9 projecting radially from the pin body 7A. The pins 9, 9 are arranged on the same axis.

A ring 13 is attached to the end of the stop pin 7 protruding outward from the case 10 as a grip that can be gripped by the operator.

The spring 8 according to the present embodiment is a compression coil spring, which is arranged on the outer periphery of the stop pin 7 and interposed between the locking pin 9 and the bottom portion 10a of the case 10 to open the stop pin 7. It is biased toward the portion 5C side.

In addition, the side portions 10b, 10b of the case 10 are formed by notching in opposite directions so that the locking pins 9, 9 are hooked when the pin body 7A is not inserted into the opening 5C. A possible locking groove 12 is provided in each case.

According to this handrail positioning member 6, a ring 13 as a gripping portion is attached to the end of the stop pin 7 protruding outside the case 10, and the ring 13 is normally gripped as shown on the left side in FIG. Then, by rotating the stop pin 7 while pulling it outward against the spring 8 , the locking pin 9 is engaged with the locking groove 12, and the axial movement of the stop pin 7 is stopped. back. It should be noted that the grip portion does not have to be the ring 13, and the shape and configuration are not particularly limited as long as it can be gripped by the operator.

Next, when positioning the handrails 3a and 3b with the ends of the handrails 3a and 3b facing each other with the handrail positioning member 6, the ends of the handrails 3a and 3b are inserted from both sides of the cylindrical body 5 in advance, and the handrails 3a and 3b are positioned. Whether or not the end of 3b is in the center of cylinder 5 is visually observed through peep hole 5A. At this time, when the ends of the handrails 3a and 3b face each other at the central position of the peephole 5A, the holes 3c provided at the ends of the handrails 3a and 3b face the opening 5C of the cylindrical body 5. This facilitates alignment between the hole 3c and the opening 5C.

Then, after confirming that the tips of the handrails 3a and 3b face each other at the central position of the peephole 5A, the stop pin 7 is rotated while holding the ring 13, and the locking pin 9 is moved to the side of the case 10. When the engagement of the locking pin 9 with the locking groove 12 is released so as to face the opening side where the 10b is not provided, the spring 8 interposed between the locking pin 9 and the bottom portion 10a of the case 10 stops. When the pin 7 is pushed, the tip of the stop pin 7 fits into each opening 5C of the cylindrical body 5 and the holes 3c provided at the ends of the handrails 3a and 3b.

As a result, the handrails 3a and 3b are positioned and connected via the stop pins 7 in the cylindrical body 5 with their ends facing each other. In this example, the handrails 3a and 3b are connected to each other with the ends of the handrails 3a and 3b separated from each other, but they may be connected while they are in contact with each other.

Further, by providing a plurality of handrail positioning members 6, a plurality of handrails 3a and 3b can be connected along the lateral direction, and the length of the attached member such as H steel W can be accommodated.

When removing the handrails 3a and 3b from the hole 3c and the opening 5C, the ring 13 is pulled by fingers and the stop pin 7 is pulled out.

In this case, by manually rotating the stop pin 7 through the ring 13 and hooking the locking pin 9 in the locking groove 12, the axial movement of the stop pin 7 can be blocked. remains unplugged.

Next, a handrail device T according to another embodiment shown in FIGS. 5 to 8 will be described.

The basic structure of this embodiment is as described above. A handrail positioning member 6 of a handrail device T according to another embodiment includes a bracket 19 provided on the outer surface of the cylindrical body 5 and a direction orthogonal to the axial direction of the cylindrical body 5 attached to the bracket 19 . The spring 8 has a curl portion 18B wound around and fixed to the shaft 20, and a pair of spring portions 18A, 18A extending from the curl portion 18B to both sides along the axial direction of the cylindrical body 5. A stop pin 7 is attached to each tip of each spring portion 18A, 18A.

Specifically, as shown in FIG. 7, the stop pin 7 is composed of a pin body 17A, a flange 17B provided on the outer circumference of the pin body 17A, and a hole 17C formed in the pin body 17A in the radial direction. A bent portion 18C formed at the end of the spring portion 18A is fitted into the hole 17C, and the stop pin 7 is attached to the tip of the spring portion 18A.

Therefore, as shown in FIG. 5A, after inserting the handrails 3a and 3b into the cylindrical body 5, when the stop pin 7 is opposed to the opening 5C of the cylindrical body 5, the spring force of the spring 8 automatically The head portion of the pin body 17A is automatically fitted into the opening 5C and the holes 3c of the handrails 3a and 3b, and the handrails 3a and 3b are aligned and connected in the cylindrical body 5. As shown in FIG.

Conversely, when removing the handrails 3a and 3b from the cylindrical body 5, for example, the spring portion 18A may be pulled outward with fingers to remove the stop pin 7 from the hole 3c and the opening 5C.

Next, still another embodiment shown in FIGS. 9 to 12 will be described. The basic structure of this embodiment is as described above.

The handrail positioning member 6 according to this embodiment includes a bracket 29 provided on the outer surface of the cylindrical body 5, and the spring 8 has a spring body 28A having a trapezoidal cross section and having its center fixed to the bracket 29 via a bolt 30. and a pair of support pieces 28B, 28B extending along the axial direction of the cylindrical body 5 from both ends of the spring body 28A, respectively, and a stop pin 7 is attached to each support piece 28B . In this example, the spring main body 28A is formed to have a trapezoidal cross section, but may have a C-shaped cross section.

Specifically, as shown in FIG. 11, the stop pin 7 includes a pin main body 27A and a small-diameter pin body 27A which is provided continuously with the pin main body 27A in the axial direction and has a smaller diameter than the pin main body 27A and has a thread groove on the outer periphery. By fitting the small diameter portion 27B into a pin mounting hole 28D formed in the support piece 28B of the spring 8 and screwing a nut member (not shown) to the small diameter portion 27B, A stop pin 7 is attached to the support piece 28B .

Therefore, as shown in FIG. 9A, after inserting the handrails 3a and 3b into the cylindrical body 5, when the stop pin 7 is opposed to the opening 5C of the cylindrical body 5, the spring force of the spring 8 automatically The head portion of the pin body 27A automatically fits into the opening 5C and the holes 3c of the handrails 3a and 3b, and the handrails 3a and 3b are aligned and connected to the cylindrical body 5. As shown in FIG.

Conversely, when removing the handrails 3a and 3b from the cylindrical body 5, for example, the spring body 28A may be pulled outward with fingers to remove the stop pin 7 from the hole 3c and the opening 5C.

As described above, according to the handrail device T according to each embodiment, the stop pin 7 is provided facing the opening 5C of the cylindrical body 5, so that the stop pin 7 is biased by the spring 8. The handrails 3a and 3b are automatically inserted into the opening 5C and the holes 3c of the handrails 3a and 3b . Easy and speed up.

When removing the handrails 3a and 3b, for example, it is only necessary to pull the stop pin 7 to the outside of the opening 5C against the spring 8 with a finger, and no tools are required, so operability and economy are improved. can be achieved.

In addition, the handrail positioning member 6 only needs to have the stop pin 7 and the spring 8, and the structure is simple, and workability, assembly efficiency, and economic efficiency can be improved.

Further, as described above, the handrail positioning member 6 according to the embodiment shown in FIGS. A case 10 is provided with a pin insertion hole 11 into which the stop pin 7 is freely retractable. The stop pin 7 projects radially from the pin body 7A which can be freely inserted into and retracted from the opening 5C. The side portions 10b, 10b have locking grooves 12 into which the locking pin 9 can be hooked when the stop pin 7 is removed from the opening 5C. is a compression coil spring arranged on the outer periphery of the pin body 7A and interposed between the locking pin 9 and the bottom portion 10a.

According to this configuration, the stop pin 7 can be maintained in a state of being removed from the opening 5C and the holes 3c of the handrails 3a and 3b, so that the work of inserting the cylindrical body 5 into the handrails 3a and 3b is facilitated.

Further, in this example, since the pair of locking pins 9, 9 are arranged on the same axis, the biasing force of the spring 8 can be uniformly transmitted to the stop pin 7, so that the stop pin 7 is less likely to tilt. , the stop pin 7 can be smoothly taken in and out from the opening 5C. However, only one locking pin 9 may be provided.

A ring 13 is attached to the end portion of the pin main body 7A protruding outside the case 10, so that the operator can easily put in and take out the stop pin 7. As shown in FIG.

Although preferred embodiments of the present invention have been described in detail above, it should be appreciated that modifications, variations and changes can be made without departing from the scope of the appended claims.

DESCRIPTION OF SYMBOLS 1... Vertical support|pillar, 2... Handrail attachment member, 3a, 3b... Handrail, 3c... Hole, 4... Handrail connection member, 5... Cylindrical body, 5C... Opening part , 6... handrail positioning member, 7... stop pin, 7A... pin body, 8... spring, 9... locking pin, 10... case, 11... pin insertion hole , 12... Locking groove, 13... Ring (holding part), 18A... Spring part, 18B... Curl part, 19... Bracket, 20... Shaft, 28A... Spring Body, 28B... support piece, 29... bracket

Claims (6)

At least two vertical pillars arranged adjacent to each other, handrail mounting members provided on each of the vertical pillars , handrails held by each of the handrail mounting members, and adjacent handrail mounting members. a handrail connecting member for connecting the handrails held respectively,
The handrail connecting member has a cylindrical body, a pair of openings formed in the cylindrical body , and a pair of handrail positioning members provided facing each of the openings ,
each of the handrail positioning members has a stop pin and a spring that biases the stop pin toward the opening;
A handrail device, wherein the handrail has a hole facing the opening when the handrail is inserted into the cylindrical body . The handrail positioning member has a bottom portion and a pair of side portions standing from both ends of the bottom portion , and the bottom portion is provided with a pin insertion hole into which the stop pin is inserted so as to be retractable . with
The stop pin has a pin body that can be moved in and out of the opening, and a locking pin that projects radially from the pin body ,
The side portion has a locking groove in which the locking pin can be hooked with the stop pin removed from the opening,
2. The spring according to claim 1, wherein the spring is a compression coil spring, which is arranged on the outer periphery of the pin body and interposed between the locking pin and the bottom portion. handrail device. 3. The handrail device according to claim 2, wherein a graspable gripping portion is attached to an end portion of the pin body protruding outside the case . The handrail positioning member is attached to the outer surface of the cylindrical body via a bracket and has a shaft extending in a direction perpendicular to the axial direction of the cylindrical body ,
The spring is a torsion coil spring having a curl portion wound around and fixed to the shaft and a pair of spring portions extending from the curl portion to both sides along the axial direction of the cylinder,
The handrail device according to claim 1, wherein the stop pin is attached to the tip of each spring portion . The handrail positioning member includes a bracket provided on the outer surface of the cylindrical body ,
The spring includes a spring body having a trapezoidal or C-shaped cross section, the center of which is fixed to the bracket , and a pair of support pieces extending from both ends of the spring body along the axial direction of the cylinder. A leaf spring having
The handrail device according to claim 1, wherein the stop pin is attached to each of the support pieces . The vertical strut comprises a strut body and a clamping member provided at the proximal end of the strut body and attached to the mounted member,
A reinforcing member having a trapezoidal cross section or a C-shaped cross section is attached to an outer peripheral position of the support body close to the holding member. The handrail system described.

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