KR102495045B1 - Handrail Fixing Structure for Construction - Google Patents

Abstract

The present invention relates to a handrail fixing device for a building handrail, which can conveniently and easily install a handrail, comprising: a wall connection plate formed with a plurality of connection holes; a fixing body provided on a front surface of the wall connection plate; a fixture including a support bar; an installation port formed with a plurality of installation holes; and a control unit including a fixing plate and a controller.

Description

Handrail fixing device for handrails for buildings {Handrail Fixing Structure for Construction}

The present invention relates to a handrail fixing device for a handrail of a building, and specifically, it is possible to conveniently and easily install a handrail constituting a handrail in an open space of a building, and firmly secure the installation position of the handrail. It relates to a handrail fixing device for handrails for buildings that can be maintained, respond quickly when the position of the installed handrail is changed, and maintain the installation position of the handrail.

In the process of constructing a building, many open spaces are formed to connect the exterior and interior spaces.

As described above, the open space is formed so as to connect the interior of the building to the exterior and to install windows, doors, handrails, and the like.

At this time, windows, doors, etc. are installed in open spaces used for people to come in and out or formed for circulation of indoor and outdoor air, and handrails are installed to prevent people living indoors from falling into external spaces. is used

In addition, handrails installed in buildings are made in various shapes to prevent people living indoors from falling into external spaces, but in general, handrails are installed above the lower rails fixedly installed on the floor of the building, It consists of a baluster connecting the lower rail and the handrail.

However, recently, a method of installing only a handrail in an open part of a building and using it as a handrail has been proposed, and a trend is that a handrail is gradually installed and used using a fixing device that can fix the handrail.

For example, conventionally, as in Document (1), a method for installing a handrail using a fixing device capable of installing the handrail in an open area of a building has been provided.

However, the conventional handrail fixing device such as document (1) can achieve the installation of the handrail in the open part of the building, but it is difficult to use while stably maintaining the installation position of the installed handrail. .

In addition, when the installation position of the handrail installed in the building is changed due to the lapse of use time or external impact, it is difficult to respond quickly and maintain a stable installation form.

In addition, it is difficult to adjust and use the installation location of the handrail installed in the building, responding to changes in the shape or installation location of the building, and it is difficult to maintain the installation and use of the handrail, resulting in unnecessary re-installation or replacement costs. it could have been

Republic of Korea Patent No. 10-2118536 (2020.05.28)

The present invention has been made to solve the above problems, and the object of the present invention is as follows.

First, it makes it possible to conveniently and stably install handrails forming handrails in open areas of buildings.

Second, the installation position of the installed handrail can be stably maintained, and even when the installation position of the handrail is changed due to changes in the external environment or impact, the installation position of the handrail is adjusted so that stable use can be achieved.

Third, even when the width and length of the building to which the handrail is to be installed is changed, the handrail can be easily installed, and the installation position of the handrail is adjusted during use to achieve stable use.

Fourth, even if the handrail is deflected due to an external shock, it responds quickly and maintains a stable installation form.

Fifth, it is possible to prevent unnecessary maintenance costs by minimizing the occurrence of replacement or re-installation costs even during use by installing handrails in open areas of buildings.

In order to achieve the above object, the present invention is fixedly installed on a wall on which a handrail is installed, a plurality of fixing holes to which bolts are coupled are formed at a portion corresponding to the wall, and a plurality of connecting holes are formed at an upper portion adjacent to the fixing hole. A wall connection plate, a fixing body provided on the front surface of the wall connection plate, with a seating groove formed at an inner central portion and a plurality of support holes formed at an edge portion adjacent to the seating, and a spherical seating coupled to the seating groove. A fixture composed of a ball and a bar protruding to the front of the seating ball, an insertion groove is formed in the center of the front surface, a position sensor is provided on the upper surface, and a support bar is provided with a fixing ring adjacent to the insertion groove; It is fixedly installed on the front surface of the fixing body so as to surround the rear surface of the seating ball coupled to the seating groove, and a contact hole is formed at the center of the rear surface to surround and support the rear surface of the seating ball, and a penetration hole communicating with the contact ball is formed at the center of the front surface. A ball is formed and a mounting hole having a plurality of installation holes corresponding to the support hole is formed in the edge portion adjacent to the close contact hole, and a plurality of bolt holes to which bolts are coupled are formed at the portion corresponding to the connection hole and installed on the upper front surface of the wall connection plate. A fixed plate, a rotating motor rotatably installed on the front of the fixed plate and connected to the fixing ring by a wire, and a rotary motor provided on the front of the fixed plate and electrically connected to the rotary motor and the position sensor to detect signals from the position sensor. And a control unit composed of a controller for operating the rotary motor according to the following, and when the fixed body and the installation hole are coupled, the front surface of the seating ball is seated and coupled to the seating groove, and the rear surface of the seating ball is seated and coupled to the inner diameter of the contact hole. The seating ball may be configured to flow around the connection portion of the seating groove and the close contact ball.

At this time, an insertion hole is further formed in the lower portion of the wall connection plate, and a support for supporting the lower portion of the fixture is further installed in the insertion hole, and the support includes a support plate having a fastening hole formed at a portion corresponding to the insertion hole, and the In the form of a plate extending from the upper end of the support plate to the front, an extension plate having a screw hole having a female screw thread in an inner diameter is formed at the end, an elastic member installed to connect the support plate and the extension plate, and a male screw thread coupled to the female screw thread at the lower end. It may be configured to include a fastening bar formed and coupled to the screw hole, and a support plate provided on an upper surface of the fastening bar to support a lower surface of the fixture.

In addition, the controller includes a battery electrically connected to the rotary motor, a receiver electrically connected to the position sensor and receiving a detection signal of the position sensor, and electrically connected to the rotary motor, the battery, and the receiver to According to the detection signal received by the receiver, it may be configured to include a control module that transfers the power of the battery to the rotating motor.

In addition, a friction plate may be further provided on the inner diameter of the insertion groove, and a plurality of contact rings having an outer diameter in close contact with the friction plate may be further coupled to an outer diameter of the handrail coupled to the insertion groove.

The present invention as described above can obtain the following effects.

First, it is possible to conveniently and stably install a handrail forming a handrail in an open part of a building.

Second, the installation position of the installed handrail can be stably maintained, and even when the installation position of the handrail is changed due to changes in the external environment or impact, the installation position of the handrail can be adjusted and stable use can be achieved.

Third, even if the width and length of the building to which the handrail is to be installed is changed, the handrail can be easily installed, and the handrail installation position can be adjusted during use to achieve stable use.

Fourth, even when the handrail sags due to external impact, it can respond quickly and maintain a stable installation form.

Fifth, it is possible to prevent unnecessary maintenance costs from occurring by minimizing replacement or re-installation costs even during use by installing a handrail in an open area of a building.

1 is a cross-sectional view showing a state in which a handrail fixing device for a handrail for a building according to the present invention is coupled.
Figure 2 is another cross-sectional view showing a state in which the handrail fixing device of the building handrail according to the present invention is coupled.
Figure 3 is another cross-sectional view showing a state in which the handrail fixing device of the building handrail according to the present invention is coupled.
Figure 4 is a cross-sectional view showing a state in which the handrail fixing device of the handrail for the present invention building handrail is installed on the wall.
Figure 5 is another cross-sectional view showing a state in which the handrail fixing device of the handrail for the present invention building handrail is installed on the wall.
Figure 6 is a cross-sectional view showing an operating state of the handrail fixing device for handrails for buildings according to the present invention.
Figure 7 is another cross-sectional view showing an operating state of the handrail fixing device for handrails for buildings according to the present invention.

The terms or words used in this specification and claims are not to be construed as being limited to a common or dictionary meaning, but 'the inventor must properly define the concept of the term in order to best explain his/her invention. It should be interpreted as a meaning and concept consistent with the technical idea of the present invention based on the principle of '.

In addition, the embodiments described in this specification and the configurations shown in the drawings are only preferred embodiments of the present invention, and do not represent all the technical ideas of the present invention, so that they can be replaced at the time of the present application. It should be understood that there may be many equivalents and variations.

And in the description of the handrail fixing device for handrails for buildings of the present invention, the part where the coupling is made in the direction of the handrail from the direction of the wall is called the front side, and the part where the coupling is made in the direction from the handrail to the wall is called the back side. I'm going to do it.

Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the accompanying drawings.

The present invention is fixedly installed on the wall 1 where the handrail is installed, and a plurality of fixing holes 11 to which bolts P are coupled are formed in a portion corresponding to the wall 1, and the fixing holes ( 11) and a wall connection plate 10 having a plurality of connection holes 12 formed on the upper part adjacent to the wall connection plate 10, provided on the front surface of the wall connection plate 10, and a seating groove 21 is formed in the inner center portion and the seating A fixing body 20 having a plurality of support holes 22 formed on the rim portion adjacent to the groove 21, a spherical seating ball 31 coupled to the seating groove 21, and the seating ball 31 In the shape of a bar protruding to the front, an insertion groove 32a is formed in the center of the front surface, a position sensor 32b is provided on the upper surface, and a support provided with a fixing ring 32c adjacent to the insertion groove 32a. It is fixedly installed on the front surface of the fixing body 20 so as to surround the rear surface of the fixture 30 composed of a bar 32 and the seating ball 31 coupled to the seating groove 21, and at the center of the rear surface. A contact hole 41 is formed to surround and support the rear surface of the seating ball 31, and a through hole 42 communicating with the contact hole 41 is formed at the center of the front surface, and an edge portion adjacent to the contact hole 41 is formed. A mounting hole 40 having a plurality of installation holes 43 corresponding to the support hole 22 is formed and installed on the upper front surface of the wall connection plate 10, and a portion corresponding to the connection hole 12 In the fixed plate 51 formed with a plurality of bolt holes 51a to which the bolt P is coupled, and rotatably installed on the front surface of the fixed plate 51, rotates connected to the fixing ring 32c and the wire 52a. It is provided on the front of the motor 52 and the fixing plate 51 and is electrically connected to the rotation motor 52 and the position sensor 32b, according to the detection signal of the position sensor 32b, the rotation motor 52 ), and the front surface of the seating ball 31 is seated in the seating groove 21 when the fixing body 20 and the installation hole 40 are coupled. coupled and set in the inner diameter of the close-fitting hole 41 The rear surface of the seating ball 31 is seated and coupled so that the seating ball 31 flows around the connection between the seating groove 21 and the contact hole 41.

As shown in FIGS. 1 to 4, the wall connecting plate 10 is fixedly installed on the open wall 1 of the building for installing the handrail fixing device of the present invention, and the fixing hole 11 Through the bolt (P) to be coupled, it is fixedly installed on the front of the wall (1).

At this time, the connection hole 12 formed on the upper part of the wall connection plate 10 is configured to install a control unit 50 to be described in detail below.

In addition, the wall connecting plate 10 is formed of a solid metal material or synthetic resin material, and the fixing body 20, fixture 30, installation tool 40, and control unit 50 described in detail below are wall connecting plate ( Even when installed on the front of 10), it is configured to maintain a solidly installed state on the front of the wall (1).

In addition, the fixing body 20 is configured to be provided on the front surface of the wall connection plate 10, and in the present invention, as shown in FIGS. 1 to 4, it is integrally formed on the front surface of the wall connection plate 10. Although illustrated and described as much as possible, it may be used by configuring it to be combined and separated from the wall connecting plate 10 according to the user's choice.

In addition, the fixing body 20 is configured such that a seating groove 21 is formed in the inner center portion to be coupled to the rear surface of the fixture 30, and a plurality of rims adjacent to the seating groove 21 are formed. A support hole 22 is formed so that the installation hole 40 can be installed on the front of the fixed body 20.

In addition, as shown in FIGS. 1 to 7, the fixture 30 has a seating ball 31 coupled to the seating groove 21. It is formed to protrude to the front of the seating ball 31 and is composed of a support bar 32 to which the handrail 2 is coupled.

Describing this configuration in more detail, the seating ball 31 is coupled to the seating groove 21 of the fixing body 20 and is formed in a spherical shape so as to be movable, and the support bar 32 is the seating groove 21. It is provided to protrude to the front of the ball 31, and an insertion groove 32a into which the handrail 2 can be inserted is formed in the center of the front surface, and the controller of the control unit 50 to be described in detail below is formed on the upper surface. (53) and electrically connected to the position sensor (32b) is provided and configured, the portion adjacent to the insertion groove (32a) is connected to the rotary motor 52 of the control unit 50 and the wire (52a) A fixing ring 32c is provided and configured.

In the above configuration, as shown in FIGS. 2 and 3, the seating ball 31 coupled to the seating groove 21 forms a flexible coupling, through the configuration of the control unit 50, the fixing ring ( When pulling the wire 52a connected to 32c), as shown in FIG. 7, the seating ball 31 moves around the seating groove 21, and the hand coupled to the insertion groove 32a of the support bar 32 It is configured to be able to adjust the position of the rail (2).

In addition, the installation hole 40 is fixedly installed on the front surface of the fixing body 20 and configured to surround the rear surface of the seating ball 31 coupled to the seating groove 21, and closely adheres to the center portion of the rear surface. A ball 41 is formed and a through hole 42 connected to the contact hole 41 is formed at the center of the front surface, and the support hole 22 and the support hole 22 are formed at the edge portion adjacent to the contact hole 41. A plurality of corresponding installation holes 43 are formed and configured.

As shown in FIGS. 1 to 4, when the seating ball 31 of the fixture 30 is inserted into the seating groove 21 of the fixing body 20 to form a coupling, The close contact hole 41 is installed in close contact with the front surface of the fixing body 20 so as to surround the rear surface of the seating ball 31, and the bolt P coupled to the installation hole 43 is attached to the fixing body 22. It is configured to be coupled to the support hole 22, so that the seating ball 31 can be positioned at the joint between the seating groove 21 of the fixed body 20 and the close contact hole 41 of the installation tool 40 It will be.

In addition, the support bar 32 of the fixture 30 is configured to penetrate through the through hole 42, so as shown in FIGS. 3 and 4, the fixing body 20 and the fixture 40 The seating ball 31 of the fixture 30 is positioned between them, and the support bar 32 of the fixture 30 is coupled to the through hole 42 of the fixture 40, and the seating ball 31 As shown in FIGS. 6 and 7, the hand is coupled to the insertion groove 32a of the support bar 32 around the connection portion of the seating groove 21 and the close contact hole 41. The rail 2 is configured to move in correspondence with the flow of the seating ball 31 and adjust its position.

In addition, as described above, the controller 50 is coupled to the connection hole 12 formed on the upper front surface of the wall connection plate 10, and a bolt P is provided at a portion corresponding to the connection hole 12. A fixed plate 51 formed with a plurality of bolt holes 51a to be coupled, and a rotation motor 52 rotatably installed on the front surface of the fixed plate 51 and connected to the fixing ring 32c by a wire 52a, A controller provided on the front of the fixed plate 51 and electrically connected to the rotary motor 52 and the position sensor 32b to operate the rotary motor 52 according to the detection signal of the position sensor 32b ( 53).

In the above configuration, the bolt P coupled to the bolt hole 51a is coupled to the connecting hole 12 so that the fixing plate 51 is firmly coupled to the front of the wall connecting plate 10. As the wire 52a, one end of which is connected to the rotation motor 52, is connected to the fixing ring 32c of the fixture 30, the wire 52a is pulled through the rotation of the rotation motor 52. In this case, as shown in FIG. 7, the position of the handrail 2 connected to the support bar 32 can be adjusted by adjusting the position of the support bar 32 of the fixture 30.

In addition, the rotary motor 52 is configured to be electrically connected to the position sensor 32b and the controller 53 provided on the upper surface of the fixture 30, so that according to the detection signal of the position sensor 32b The controller 53 is configured to control the operation of the rotary motor 52 to adjust the position of the support bar 32 on which the handrail 2 is installed.

Describing this configuration in more detail, the controller 53 includes a battery 53a electrically connected to the rotary motor 52 and electrically connected to the position sensor 32b to generate the position sensor 32b. The receiver 53b for receiving the detection signal is electrically connected to the rotary motor 52, the battery 53a, and the receiver 53b, and the battery 53a is electrically connected according to the detection signal received by the receiver 53b. It is configured to include a control module (53c) for transmitting the power of the rotary motor (52).

That is, as shown in FIG. 6, when a sagging phenomenon occurs in the handrail 2 connected to the support bar 32, the position sensor 32b provided on the upper surface of the support bar 32 detects this. It is configured to detect and transmit a detection signal to the receiver 53b, and when the detection signal is received by the receiver 53b, the control module 53c converts power of the battery 53a to the rotation motor 52. By transmitting, the rotation motor 52 rotates and pulls the fixing ring 32c connected to the wire 52a, as shown in FIG. 7, the handrail 2 connected to the support bar 32 of the fixture 30 It is configured to improve the sagging phenomenon.

At this time, in the present invention, as shown in FIGS. 6 and 7 to explain the operating relationship of the controller 50 in detail, by pulling the wire 52a connected to the rotation motor 52, the support bar of the fixture 30 ( 32) and the position of the handrail 2 have been illustrated and described to be excessively adjusted, but the rotation motor 52 pulls the wire 52a to maintain the original installed state of the handrail 2. It is desirable.

In addition, as shown in FIGS. 1 to 7, an insertion hole 13 is further formed in the lower portion of the wall connecting plate 10, and the insertion hole 13 supports the lower portion of the fixture 30. The support 60 is further installed, and the support 60 includes a support plate 61 having a fastening hole 61a formed at a portion corresponding to the insertion hole 13, and the support plate 61 An extension plate 62 having a plate shape extending from the upper end to the front and having a screw hole 62a having a female screw thread 62a-1 formed on the inner diameter at the end thereof, and connecting the support plate 61 and the extension plate 62. An elastic member 63 to be installed, a male screw thread 64a coupled to the female screw thread 62a-1 are formed at the lower end and a fastening bar 64 coupled to the screw hole 62a, and the fastening bar ( 64) is provided on the upper surface and includes a support plate 65 supporting the lower surface of the fixture 30.

In this configuration, when the fixing body 20, the fixture 30, and the installation fixture 40 are installed on the front of the wall connecting plate 10, the fixture 30 through the configuration of the support 60 By supporting the lower surface, it is to prevent sagging of the handrail 2 connected to the fixture 30 in advance.

This is so that the bolt P coupled to the fastening hole 61a is coupled to the insertion hole 13 so that the support plate 61 is firmly installed on the lower front surface of the wall connecting plate 10, The connection plate 62 is formed to extend from the upper end of the support plate 61 to the front, and is configured to be connected to the elastic member 63 so that the extension plate 62 is affected by the impact transmitted to the extension plate 62. It is configured to minimize the change of the installation location of the .

In addition, the fastening bar 64 is coupled to the screw hole 62a of the extension plate 62, and the male screw thread 64a formed at the lower end is female screw thread 62a formed on the inner diameter of the screw hole 62a. By being configured to be coupled to -1), the user adjusts the installation position of the fastening bar 64 coupled to the screw hole 62a to form a coupling, and after the fastening bar 64 is coupled to the screw hole 62a is configured to maintain a solid installation position.

This configuration, that is, as shown in FIGS. 3 to 5, the fastening bar 64 so that the support plate 65 provided on the upper surface of the fastening bar 64 can maintain a state in close contact with the lower surface of the fixture 30. ) Adjusts the installation position and is combined with the extension plate 62.

Through this, even when impact or weight is transmitted to the handrail 2, the support 60 firmly supports the lower end of the fixture 30, so that the installation position of the fixture 30 and the handrail 2 is changed. This will prevent it from happening and achieve stable use.

In addition, a friction plate 32a-1 is further provided on the inner diameter of the insertion groove 32a, and the outer diameter of the handrail 2 coupled to the insertion groove 32a has an outer diameter of the friction plate 32a-1. The plurality of close contact rings 70 are further coupled to each other.

As shown in FIGS. 4 and 5, when the handrail 2 is coupled to the insertion groove 32a of the fixture 30, a plurality of close contact coupled to the outside of the handrail 2 Through the configuration of the ring 70, it is configured to adjust the coupling position of the insertion groove 32a and the handrail 2 and achieve coupling.

This makes it possible to easily install the handrail 2 by adjusting the coupling position of the handrail 2 coupled to the insertion groove 32a even when the width and length of the building to which the handrail is to be installed is changed. After the installation is made, the outer diameter of the contact ring 70 coupled to the outer diameter of the handrail 2 is firmly adhered to the friction plate 32a-1 provided in the inner diameter of the insertion groove 32a to insert the groove ( It is configured to firmly maintain the installation position of the handrail 2 coupled to 32a) and achieve stable use.

Although the present invention has been shown and described in relation to specific embodiments, it is known in the art that the present invention can be variously improved and changed without departing from the gist or scope of the present invention provided by the claims below. It will be self-evident to those skilled in the art.

1: wall 2: handrail
10: wall connecting plate
11: fixed hole 12: connecting hole
13: insertion hole 20: fixed body
21: seating groove 22: support ball
30: fixture 31: seating ball
32: support bar 32a: insertion groove
32a-1: friction plate 32b: position sensor
32c: fixing ring 40: installation hole
41: contact hole 42: through hole
43: installer 50: control unit
51: fixed plate 51a: bolt hole
52: rotation motor 52a: wire
53: controller 53a: battery
53b: receiver 53c: control module
60: support 61: support plate
62: extension plate 62a: screw hole
62a-1: female thread 63: elastic member
64: fastening bar 64a: male thread
70: close ring P: bolt

Claims (4)

It is installed to be fixed to the wall 1 where the handrail is installed, and a plurality of fixing holes 11 to which bolts P are coupled are formed at a portion corresponding to the wall 1, and adjacent to the fixing hole 11 A wall connection plate 10 having a plurality of connection holes 12 formed thereon,
A fixed body (20) provided on the front surface of the wall connecting plate (10), with a seating groove (21) formed at the inner center and a plurality of support holes (22) formed at the edge portion adjacent to the seating groove (21). and,
A spherical seating ball 31 coupled to the seating groove 21, and an insertion groove 32a formed in the center of the front surface in a bar shape protruding to the front of the seating ball 31, and a position sensor on the upper surface. (32b) is provided and a fixture 30 composed of a support bar 32 provided with a fixing ring 32c at a portion adjacent to the insertion groove 32a;
It is fixedly installed on the front surface of the fixed body 20 so as to surround the rear surface of the seating ball 31 coupled to the seating groove 21, and close contact with the rear surface of the seating ball 31 at the center of the rear surface. A ball 41 is formed, a through hole 42 communicating with the contact hole 41 is formed at the center of the front surface, and a plurality of holes corresponding to the support hole 22 are formed at the edge portion adjacent to the contact hole 41. An installation hole 40 in which an installation hole 43 is formed;
A fixing plate 51 installed on the upper front surface of the wall connecting plate 10 and having a plurality of bolt holes 51a to which bolts P are coupled to a portion corresponding to the connecting hole 12, and the fixing plate ( 51) is rotatably installed on the front side and connected to the fixing ring 32c and the wire 52a, the rotation motor 52 is provided on the front side of the fixing plate 51 and the rotation motor 52 and the position sensor (32b) and electrically connected to the control unit 50 composed of a controller 53 for operating the rotary motor 52 according to the detection signal of the position sensor (32b),
When the fixed body 20 and the installation hole 40 are coupled, the front surface of the seating ball 31 is seated and coupled to the seating groove 21, and the rear surface of the seating ball 31 is attached to the inner diameter of the contact hole 41. This seat combination is configured so that the seat ball 31 moves around the connection portion of the seat groove 21 and the close contact hole 41,
An insertion hole 13 is further formed at the bottom of the wall connecting plate 10,
A support 60 for supporting the lower portion of the fixture 30 is further installed in the insertion hole 13,
The support 60 is
A support plate 61 having a fastening hole 61a formed at a portion corresponding to the insertion hole 13;
An extension plate 62 having a plate shape extending from the upper end of the support plate 61 to the front and having a screw hole 62a having a female thread 62a-1 at an inner diameter at the end thereof;
An elastic member 63 installed to connect the support plate 61 and the extension plate 62;
A fastening bar 64 having a male thread 64a coupled to the female thread 62a-1 formed at a lower end and coupled to the screw hole 62a;
It includes a support plate 65 provided on the upper surface of the fastening bar 64 to support the lower surface of the fixture 30,
The controller 53 is
A battery 53a electrically connected to the rotary motor 52;
A receiver 53b electrically connected to the position sensor 32b and receiving a detection signal of the position sensor 32b;
It is electrically connected to the rotary motor 52, the battery 53a, and the receiver 53b, and transfers the power of the battery 53a to the rotary motor 52 according to the detection signal received by the receiver 53b. It includes a control module (53c),
A friction plate 32a-1 is further provided on the inner diameter of the insertion groove 32a,
A handrail of handrails for buildings, characterized in that a plurality of contact rings 70 having an outer diameter in close contact with the friction plate 32a-1 are further coupled to the outer diameter of the handrail 2 coupled to the insertion groove 32a. fixture.
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