JPH07324451A - Handrail connector - Google Patents

Abstract

PURPOSE:To prevent a handrail connector for connecting two handrails in a straight line from being loosened after fastening, and to facilitate connecting work with the number of component parts of the connector decreased. CONSTITUTION:A handrail connector is composed of first and second fixing plates 10 and 20 to be fixed to each of opposite faces of two handrails 1 and 2 to be connected and a rotator 30 interposed between the fixing plates 10 and 20. An engaging hole 11 is formed to the center of the first fixing plate 10 while an internal thread 21 is provided to the center of the second fixing plate 20. A pin 31 to be fitted loosely into the engaging hole 11 and an external thread 33 to be screwed into the internal thread 21 are provided to the rotator 30.

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 without loosening after assembly and has a reduced number of parts. It is a thing.

[0002]

2. Description of the Related Art Handrails used on stairs or the like are sometimes used in a continuous state without a gap by connecting pieces having a certain length in series. A handrail connector is used to connect the handrails, and this conventional example will be described with reference to FIG.

The conventional handrail coupling device includes a first fixing plate 110 joined to an end surface of one handrail 1 and the other handrail 2.
The second fixed plate 120 is joined to the end surface of the first fixed plate 110, and the wooden rotating body 130 is interposed between the pair of first and second fixed plates 110 and 120. First and second fixing plate 1
The bulging portion 11 is formed at the center of the opposite side of each of 10, 120.
1,121 are projected. A hexagonal concave fitting portion 112 that accommodates the nut 140 is formed on the outer side of the bulging portion 111 protruding from the first fixing plate 110. Since the concave fitting portion 112 is formed in a hexagonal shape, the nut 140 is stored so as not to rotate.

A bulging portion 12 protruding from the second fixing plate 120.
At the center of 1, a left-handed female thread 122 is formed. The first and second fixing plates 110 and 120 have both screws 15 with a locking portion 150 that engages with the nut 140 and the female screw 122.
Integrated by 1. Further, in the first and second fixing plates 110 and 120, countersink holes 113 penetrating the wood screws 141 are provided at three locations around the protruding portions 111 and 121.
123 are drilled in three places at intervals of 120 °.

The rotating body 130 interposed between the first and second fixed plates 110 and 120 is a thick-walled cylindrical body, and circular recesses 131 and 131 are formed on both end surfaces, and both recesses are formed. A long hole 132 is formed to connect the 131, 131.
The bulging portions 111 and 121 of the first and second fixing plates 110 and 120 are embedded in the recessed portions 131 and 131 of each end surface. The locking portions 150 of the screws 151 are inserted into the elongated holes 132, and the screws 151 are also rotated by rotating the rotating body 130.

The conventional handrail connector is constructed as described above. Next, a method of connecting the two handrails 1 and 2 will be described. First, the concave fitting portion 112 of the first fixing plate 110
The nut 140 is housed inside, and the first fixing plate 110 is fixed to the one handrail 1 by the wood screw 141. The second fixing plate 120 is also fixed to the other handrail 2 by wood screws 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.

After that, both 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 elongated 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 rotating body 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 screw, both screws 151 are housed in the concave fitting portion 112 of the first fixing plate 110. The nut 140 and the female screw 12 of the second fixing plate 120
Screw with 2. When the 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 are brought into close contact with each other, and the two handrails 1 and 2 are connected to the handrail. It is connected in series in a continuous state via.

[0008]

In the conventional handrail connector, both screws 151 have the concave fitting portion 112 of the first fixing plate 110.
The handrails 1 and 2 are connected in series by being screwed into a nut 140 housed inside and a female screw 122 of the second fixing plate 120. Both screws 151 are screwed to the nut 140 and the female screw 122 by rotating the rotating body 130. Since it is difficult to screw the right screw of both screws 151 into the nut 140 in a state where both screws 151 are stored in the rotating body 130 in advance, the right screw of both screws 151 is slightly screwed into the nut 140. And then both screws 151
Is stored in the rotating body 130, and the rotating body 130 is rotated.

However, at the installation site of the handrail connecting tool, the right screws of both screws 151 are often tightened too much to the nut 140, and even if the rotating body 130 is rotated in such a tightened state, both screws 151 will be rotated. The left-hand screw of No. cannot completely engage with the female screw 122 of the second fixing plate 120. Then, there was a problem that the screws were loosened after the assembling and the two handrails 1 and 2 came off.
In addition, the number of parts is large and assembly work is troublesome.

Therefore, an object of the present invention is to provide a handrail connector which can be tightened so as not to loosen after assembly and has a reduced number of parts.

[0011]

[Means for Solving the Problems] A first means for achieving the above-mentioned object is a first and a second fixing plate fixed to the facing surfaces of two handrails connected in series, and the both fixings. In a handrail connecting tool composed of a rotating body interposed between plates, an engaging 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. The fixing plate is provided with a screw hole, and the rotating body is formed into a disk shape having a through hole that can be continuous with the screw hole, and the center of the rotating body is loosely fitted in the engaging hole of the first fixing plate. It is a handrail coupling tool characterized in that a shaft and a male screw to be screwed with a female screw of the second fixing plate are formed.

A second means for achieving the above object is
A handrail connecting tool characterized in that a flange portion is formed on the outer periphery of the rotating body according to the first means, the side surfaces of the first and second fixing plates facing each other being externally fitted.

A third means for achieving the above object is to:
It is a handrail connector in which a ring for locking the first fixing plate is fitted to the shaft described in the first means.

[0014]

According to the above-mentioned first means, the shaft protruding from the center of the rotating body is loosely fitted in the engaging hole of the first fixing plate, so that the rotating body is restrained by the first fixing plate. It is integrated with the first fixed plate so as to rotate freely without moving. The first fixing plate is fixed to the handrail by a screw penetrating the screw hole. 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. The second fixing plate, which is separate from the first fixing plate, is fixed to the other handrail by a screw penetrating the screw hole. Then, when the rotating body is rotated while 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 into the female screw of the second fixing plate, and The handrails of the books are connected in series without gaps.

According to the second means, when the second fixed plate is joined to the rotary body, the mounting position of the second fixed plate is regulated by the flange portion of the rotary body. Further, since 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 portion, 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 cannot be removed.
Moreover, the rotating body can rotate freely without being restricted by the first fixing plate.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A concrete embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a sectional view of a handrail connecting portion in a specific embodiment of the present invention. FIG. 2 is a side view of the first or second fixing plate in 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 connector according to the present invention comprises a first fixing plate 10 which is joined to the end face of one handrail 1, a second fixing plate 20 which is joined to the end face of the other handrail 2, and both the fixing plates. It is composed of a rotating body 30 which is interposed between 10 and 20. An engaging hole 11 is formed in the center of the first fixing plate 10, and screw holes 12 such as countersinks for penetrating the screw 40 are formed around the engaging hole 11 at intervals of 120 °, for example. It is drilled in the place. A female screw 2 is provided at the center of the second fixing plate 20.
1 is formed, and screw holes 22 such as countersinks for penetrating the screw 40 are also formed around the female screw 21 at three positions at intervals of 120 °, for example. A recess 13 is formed on the surface of the first fixing plate 10 that is joined to the handrail 1. By forming the engaging hole 11 formed in the first fixing plate 10 with a female screw and forming the concave portion 23 in the second fixing plate 20, the first fixing plate 10 and the second fixing plate 20 are connected to each other. Can be combined.

The rotating body 30 interposed between the first and second fixed plates 10 and 20 is a disk-shaped member having a through hole 31 formed therein, and has an engagement formed in the first fixed plate 10 at the center thereof. A shaft 32 that is loosely fitted in the hole 11 and a male screw 33 that is screwed into the female screw 21 of the second fixing plate 20 are formed in opposite directions. Rotating body 3
0 through holes 31 are formed at three positions at 120 ° intervals so as to be continuous with the screw holes 12 formed in the first fixing plate 10, and the hole diameter of the through holes 31 is slightly larger than that of the screw holes 12. Make it large. In addition, the shaft 32 is provided in the engagement hole 11 of the first fixing plate 10.
To 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 is fixed to the first fixing plate 1.
It does not deviate from 0, and the rotating body 30 is allowed to rotate freely without being restricted by the first fixed plate 10. The male screw 33 screwed into the female screw 21 of the second fixing plate 20 has a length that does not protrude from the recess 23 when the recess 23 is formed in the second fixing plate 20. Rotating body 30
A flange portion 35 is formed on the outer periphery of the outer peripheral surface of the first and second fixing plates 10 and 20 so that the opposite side surfaces thereof are fitted.

The handrail connector according to the present invention is constructed as described above. Next, a method for connecting 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 in a continuous state, and the screw 4
0 passes 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 fixing plate 1
0 is fixed to the handrail 1 with screws 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 fixing plate 20 of can be fixed to the other handrail 2. The second fixing plate 20 fixed to the other handrail 2 is joined to the rotating body 30 integrated with the first fixing plate 10 fixed to the one handrail 1. The position of the second fixed plate 20 is regulated by the collar portion 35 of the rotating body 30, and the female screw 21 of the second fixed plate 20 is provided.
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
0 and the second fixing plate 20 are integrated, and the two handrails 1 and 2 are connected in series.

The present invention is not limited to the above embodiment, and the design can be changed within the scope of the present invention. For example, since the rotating body 30 can freely rotate without being constrained by the first fixed plate 10, the through hole 31
May be provided at one place, and the through hole 31 may be formed by a frame-shaped disk such as a rib.

[0023]

According to the present invention, the shaft of the rotating body is loosely fitted in the engaging hole of the first fixing plate, so that the rotating body can freely rotate without being restricted by the first fixing plate. However, since they are screwed together only by the male screw formed on the rotating body and the female screw formed on the second fixing plate, they are completely screwed together and tightened, so they do not loosen after mounting. . Therefore, the problem that the two handrails come off is eliminated. Also, the number of parts when assembled is small,
Assembly workability is improved.

[Brief description of drawings]

FIG. 1 is a sectional view of a handrail connecting portion in a specific embodiment of the present invention.

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

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.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Handrail 2 Handrail 10 1st fixing plate 11 Engagement hole 20 2nd fixing plate 21 Female screw 30 Rotating body 31 Shaft 33 Male screw 34 Ring 35 Collar part

Claims (3)

[Claims] 1. A handrail connector comprising a first and a second fixing plate 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 bored in the first and second fixing plates, and A disk having a through hole that can be continuous with the hole, and a shaft that is loosely fitted in the engaging hole of the first fixing plate and a male screw that engages with the female screw of the second fixing plate at the center of the rotating body. A handrail connector characterized in that 2. The outer periphery of the rotating body according to claim 1,
And a handrail connecting device, wherein a flange portion is formed to fit the opposite side surfaces of the second fixing plate. 3. A handrail connector, wherein the shaft according to claim 1 is fitted with a ring for locking the first fixing plate.