JP3335768B2 - Railing fixture - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a handrail connecting device for connecting two handrails in series, and more particularly to a handrail connecting device which can be tightened so as not to be loosened after assembly and has a reduced number of parts. Things.

[0002]

2. Description of the Related Art Handrails used on stairs or the like are sometimes used in a continuous state without any gaps by connecting a certain length of railings in series. A handrail connecting device is used to join the handrails. This conventional example will be described with reference to FIG.

[0003] A conventional handrail connecting device includes a first fixing plate 110 to be joined to an end surface of one handrail 1 and a second handrail 2.
And a wooden rotating body 130 interposed between the pair of first and second fixing plates 110 and 120. First and second fixing plates 1
At the center on the opposite side of the bulging portions 11 and 12, respectively.
1, 121 are protruded. A hexagonal recess 112 for accommodating the nut 140 is formed outside the bulge 111 protruding from the first fixing plate 110. By forming the concave fitting portion 112 in a hexagonal shape, the nut 140 is stored so as not to rotate.

The bulging portion 12 protruding from the second fixing plate 120
At the center of 1, a female screw 122 of a left-hand thread is formed. The first and second fixing plates 110 and 120 are provided with a double screw 15 with a locking portion 150 that is screwed into a nut 140 and a female screw 122.
1 are integrated. Further, the first and second fixing plates 110 and 120 are provided with three countersunk holes 113 through which the wood screws 141 are inserted at three locations around the protrusions 111 and 121.
123 are drilled in three places at 120 ° intervals.

The rotating body 130 interposed between the first and second fixing plates 110 and 120 is a thick columnar body, and circular recesses 131 and 131 are formed on both end surfaces. Long holes 132 communicating with 131, 131 are formed.
The bulges 111 and 121 of the first and second fixing plates 110 and 120 are embedded in the recesses 131 and 131 on each end surface. The locking portion 150 of the two screws 151 is inserted into the long hole 132, and the two screws 151 are rotated by rotating the rotating body 130.

The conventional handrail connecting device is constructed as described above. Next, a method of connecting two handrails 1 and 2 will be described. First, the concave fitting portion 112 of the first fixing plate 110
The first fixing plate 110 is fixed to one of the handrails 1 with a wood screw 141. The second fixing plate 120 is also fixed to the other handrail 2 with a wood screw 141. Next, the right screws of both screws 151 are slightly screwed into the nut 140 housed in the concave fitting portion 112 of the first fixing plate 110.

[0007] Thereafter, the two screws 151 are externally fitted by the rotating body 130 so that the locking portions 150 of the both screws 151 are housed in the long holes 132 of the rotating body 130. Then, the first and second fixing plates 110 and 120 to which the handrails 1 and 2 are fixed.
The rotator 130 is sandwiched between them. When the rotating body 130 is rotated clockwise, the locking portion 150 housed in the elongated hole 132 rotates. Then, the concave fitting portion 112 of the first fixing plate 110
Since the nut 140 housed therein does not rotate and the female screw 122 of the second fixing plate 120 is a left-handed screw, both screws 151 are housed in the concave fitting portion 112 of the first fixing plate 110. Nut 140 and female screw 12 of second fixing plate 120
2 and screw. When the two screws 151, the nut 140 and the female screw 122 are tightened, the two first and second fixing plates 110 and 120 and the rotating body 130 come into close contact with each other, and the two handrails 1 and 2 are handrail connecting devices. Are connected in series in a continuous state.

[0008]

In the conventional handrail connecting device, the two screws 151 have the concave fitting portions 112 of the first fixing plate 110.
The two handrails 1 and 2 are connected in series by screwing into the nut 140 housed in the inside and the female screw 122 of the second fixing plate 120. The two screws 151 are screwed with the nut 140 and the female screw 122 by rotating the rotating body 130. It is difficult to screw the right screws of both screws 151 into nut 140 when both screws 151 are housed in rotating body 130 in advance, so that the right screws of both screws 151 are slightly screwed into nut 140. After the two screws 151
Is stored in the rotating body 130, and the rotating body 130 is rotated.

However, at the site where the handrail connecting device is attached, the right screw of both screws 151 is often overtightened to the nut 140, and even if the rotating body 130 is rotated in such an overtightened state, the two screws 151 are not tightened. Cannot be completely screwed with the female screw 122 of the second fixing plate 120. Then, there is a problem that the screws are loosened after the assembly, and the two handrails 1 and 2 come off.
Also, the number of parts was large, and the assembling work was troublesome.

Accordingly, an object of the present invention is to provide a handrail connecting device which can be tightened so as not to be loosened after assembling and has a reduced number of parts.

[0011]

A first means for achieving the above object is a first and a second fixing plate fixed to opposing surfaces of two handrails connected in series; In a handrail connecting device comprising a rotating body interposed between plates, an engagement hole is formed at the center of the first fixing plate, and a female screw is formed at the center of the second fixing plate. A screw hole is formed in the fixing plate, and the rotating body is formed in a disk shape having a through hole that can be connected to the screw hole, and is loosely fitted to the engaging hole of the first fixing plate at the center of the rotating body. A handrail connecting device having a shaft and a male screw screwed with a female screw of a second fixing plate.

A second means for achieving the above object is as follows:
A handrail connecting device, wherein a flange portion for externally fitting a side surface of the first and second fixing plates on opposite sides is formed on an outer periphery of the rotating body according to the first means.

[0013] A third means for achieving the above object is as follows.
A handrail connecting device, wherein a ring for locking a first fixing plate is fitted to the shaft described in the first means.

[0014]

According to the first aspect, the shaft protruding from the center of the rotating body is loosely fitted into the engaging hole of the first fixed plate, whereby the rotating body is restrained by the first fixed plate. It is integrated with the first fixed plate so that it can rotate freely without any trouble. The first fixing plate is fixed to the handrail by screws passing through the screw holes. The screw can be passed through the screw hole at a position where the through hole of the rotating body and the screw hole of the first fixing plate are continuous. A second fixing plate separate from the first fixing plate is fixed to the other handrail by a screw penetrating a screw hole. Then, when the rotating body is rotated in a state where the female screw of the second fixing plate and the male screw of the rotating body are joined, the male screw of the rotating body is screwed with the female screw of the second fixing plate, and 2 The handrails of the book are connected in series without gaps.

According to the second means, when the second fixed plate is joined to the rotating body, the mounting position of the second fixed plate is regulated by the flange of the rotating body. Further, the first and second fixing plates and the rotating body are held not only by the shaft and the male screw but also by the flange, so that the connecting portion of the two handrails is reinforced.

According to the third means, the shaft of the rotating body is loosely fitted to the first fixed plate by the ring and does not come off.
Moreover, the rotating body can freely rotate without being restricted by the first fixed plate.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A specific embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a cross-sectional view of a handrail connecting portion according to a specific embodiment of the present invention. FIG. 2 is a side view of the first or second fixing plate according to the specific embodiment of the present invention. FIG. 3 is a side view of a rotating body according to a specific embodiment of the present invention.

The handrail connecting device according to the present invention comprises a first fixed plate 10 joined to the end surface of one handrail 1, a second fixed plate 20 joined to the end surface of the other handrail 2, and the two fixed plates. And a rotating body 30 interposed between the first and second rotating bodies 10 and 20. An engagement hole 11 is formed at the center of the first fixing plate 10, and around the engagement hole 11, screw holes 12 such as countersunk holes for penetrating the screw 40 are formed at intervals of, for example, 120 °. Drilled at the location. At the center of the second fixing plate 20 is a female screw 2
1 are formed, and screw holes 22 such as countersunk holes for penetrating the screw 40 are also formed around the female screw 21 at three locations, for example, at 120 ° intervals. A recess 13 is formed on the surface where the first fixing plate 10 is joined to the handrail 1. The first fixing plate 10 and the second fixing plate 20 are separated from each other by forming the engaging hole 11 formed in the first fixing plate 10 into a female screw and forming the concave portion 23 in the second fixing plate 20. It can be shared.

The rotating body 30 interposed between the first and second fixing plates 10 and 20 is a disk-shaped member having a through hole 31 formed therein. A shaft 32 loosely fitted in the hole 11 and a male screw 33 screwed with the female screw 21 of the second fixing plate 20 are formed in opposite directions. Rotating body 3
For example, the 0 through-holes 31 are formed at three places at 120 ° intervals so as to be continuous with the screw holes 12 formed in the first fixing plate 10, and the diameter of the through-holes 31 is slightly larger than that of the screw holes 12. Be larger. The shaft 32 is provided with the engagement hole 11 of the first fixed plate 10.
And a length that does not protrude from the concave portion 13 of the first fixing plate 10. By fitting a ring 34 such as a C-ring to the tip of the shaft 32, the shaft 32
0, and the rotating body 30 can freely rotate without being restrained by the first fixed plate 10. The male screw 33 screwed with the female screw 21 of the second fixing plate 20 has a length that does not protrude from the concave portion 23 when the concave portion 23 is formed in the second fixing plate 20. Rotating body 30
A flange 35 is formed on the outer periphery of the first and second fixing plates 10 and 20 so as to externally fit side surfaces of the first and second fixing plates 10 and 20 on opposite sides.

The handrail connecting device according to the present invention is configured as described above. Next, a method for joining the two handrails 1 and 2 will be described. Although the first fixed plate 10 and the rotating body 30 are integrated, the rotating body 30 can freely rotate without being restricted by the first fixed plate 10. Therefore, the through hole 31 of the rotating body 30 and the screw hole 12 of the first fixing plate 10 can be made continuous, and the screw 4
0 through the first screw hole 12 from the through hole 31 of the rotating body 30 and is fastened to the handrail 1 so that the first fixed plate 1
0 is fixed to the handrail 1 with the screw 40.

A second fixing plate 20 is fixed to the other handrail 2. By passing the screw 40 through the screw hole 12 formed in the second fixing plate 20 and tightening the screw 40, the second
Can be fixed to the other handrail 2. The second fixed plate 20 fixed to the other handrail 2 is joined to a rotating body 30 integrated with the first fixed plate 10 fixed to the one handrail 1. The position of the second fixing plate 20 is regulated by the flange 35 of the rotating body 30, and the female screw 21 of the second fixing plate 20 is
And the male screw 33 of the rotating body 30 are joined. Therefore, when the rotating body 30 is rotated, the male screw 3 formed on the rotating body 30 is rotated.
3 is screwed with the female screw 21 of the second fixing plate 20. When the male screw 33 of the rotating body 30 and the female screw 21 of the second fixing plate 20 are completely tightened, the first fixing plate 10 and the rotating body 3
The two handrails 1 and 2 are connected in series with the 0 and the second fixing plate 20 being integrated.

The present invention is not limited to the above embodiment, but can be modified within the scope of the present invention. For example, since the rotating body 30 can freely rotate without being restricted by the first fixed plate 10, the through hole 31
The through hole 31 may be formed by a frame-shaped disk such as a rib.

[0023]

According to the present invention, the rotating body freely rotates without being restrained by the first fixing plate by loosely fitting the shaft of the rotating body into the engaging hole of the first fixing plate. Since the screw is screwed only by the male screw formed on the rotating body and the female screw formed on the second fixing plate, both are completely screwed and tightened, so that they are not loosened after mounting. . Therefore, the disadvantage that two handrails come off is eliminated. Also, the number of parts during assembly is small,
The assembly workability is improved.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a handrail connecting portion according to a specific embodiment of the present invention.

FIG. 2 shows a first or second embodiment of the present invention.
It is a side view of the fixing plate of FIG.

FIG. 3 is a side view of a rotating body according to a specific embodiment of the present invention.

FIG. 4 is a cross-sectional view of a conventional connecting portion.

[Description of Signs] 1 Handrail 2 Handrail 10 First fixing plate 11 Engagement hole 20 Second fixing plate 21 Female screw 30 Rotating body 31 Shaft 33 Male screw 34 Ring 35 Flange

Claims (3)

(57) [Claims] 1. A handrail connecting device comprising: first and second fixing plates fixed to opposing surfaces of two handrails connected in series; and a rotating body interposed between the two fixing plates. An engaging hole is formed in the center of the first fixing plate, a female screw is formed in the center of the second fixing plate, and a screw hole is formed in the first and second fixing plates. A disk formed with a through hole that can be continuous with the hole, a shaft loosely fitted in the engagement hole of the first fixed plate, and a male screw screwed with the female screw of the second fixed plate at the center of the rotating body. A handrail connecting device characterized by forming: 2. An outer periphery of the rotating body according to claim 1,
A handrail connecting device, wherein a flange portion for externally fitting a side surface of the second fixing plate to the opposite side is formed. 3. A handrail connecting device, wherein a ring for locking the first fixing plate is fitted to the shaft according to claim 1.