JP3775857B2 - Composite rail connection structure - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a connection structure of a composite handrail for connecting end portions of composite handrails formed by combining a plurality of long members having different linear expansion coefficients in the thickness direction along the longitudinal direction.
[0002]
[Prior art]
6 and 7 show a joint portion between conventional handrails. FIG. 6 is a longitudinal sectional view of the joint portion between the handrails, and FIG. 7 is an external perspective view of the joint portion between the handrails. It is shown.
The joint portion between the conventional handrails is provided with a handrail joint bracket 110 that is formed so that the end portion of the handrail 120 made of a long columnar wood can be inserted from both ends and is fixed to the building frame. The handrail joint bracket 110 includes a cylindrical handrail insertion portion 111 formed so that an end of a columnar handrail 120 can be inserted, a fixing portion 112 fixed to a wall surface 150 of the building frame, and the fixing portion 112 And a connecting portion 113 that connects the handrail insertion portion 111 with the connecting portion 113.
The end portion of the handrail 120 is inserted into the handrail insertion portion 111 of the handrail joint bracket 110 from both the left and right sides in the lateral direction so that the handrails 120 can be connected in the longitudinal direction. The inserted handrail 120 is fixed to the handrail insertion portion 111 with a screw 130, and the fixing portion 112 is fixed to a wall surface 150 which is a building frame with a fixing screw 140.
[0003]
In recent years, handrails are provided with a core material made of metal at the central axis and a cap wood made of resin or the like that is fitted on the surface of the core material, without being made of wood alone, in order to increase its strength. Composite materials have been used.
[0004]
[Problems to be solved by the invention]
However, in the joint portion of the conventional handrail 120 described above, since the handrail insertion portion 111 covers the end surfaces of the handrails 120, a convex convex step 114 is formed from the surface of the handrail 120 toward the indoor side. It became. For this reason, when the hand is slid along the surface of the handrail 120, there is a problem that the hand cannot be smoothly moved along the surface of the handrail 120 by being caught by the convex step 114.
[0005]
In addition, if the ends are connected without covering the surface side of the end of the handrail, the above-described convex step does not occur and the surface can be moved smoothly on the surface of the handrail. When a composite member in which a plurality of members are combined in the thickness direction is used, it is difficult to match the edges in the longitudinal direction due to the difference in linear expansion.
For example, when using a composite handrail composed of a core material made of a metal having a large linear expansion coefficient to increase the strength of the handrail and a cap material made of resin covering the core material, a linear expansion coefficient is used. Due to the difference, the core material stretched in the longitudinal direction more than the shade wood and a gap was generated on the surface side, making it very unsightly. On the other hand, when a material having a large linear expansion coefficient is used on the surface side of the handrail, the seam portion comes into contact with each other, resulting in partial bulge, which is very unsightly.
Further, when trying to match the edges of adjacent handrails, there is a case where the joints of the edges of the handrails are not flush with each other due to deformation of the handrail itself or dimensional errors. In the case as described above, since the appearance is not good, it is not easy to perform a part of the scraping work in order to eliminate the shift, and there is a problem that it takes much time and effort.
[0006]
Therefore, the invention described in claim 1 has been made in view of the above-described problems of the prior art, and the object of the invention is that the surface of the composite handrail can be made up with the shade wood. The outer edge of the composite handrail can be adapted to the longitudinal linear expansion of the composite handrail as well as the strength can be ensured by the metal headboard core made of metal. It is an object of the present invention to provide a connection structure of a composite handrail capable of maintaining an excellent appearance including a connection portion between the two.
In addition to this, the invention described in claim 1 is intended to provide a connection structure of a composite handrail capable of smoothly moving a hand along the surface of the composite handrail including the connection section.
[0007]
In order to solve the above-mentioned problems, patent applications and utility model registration applications after 1980 were searched using the following search formula by using the prior art search (Patris) of Japan Patent Information Organization (JAPIO).
[0008]
Search formula: E04F11 / 18 * (Fitting + Connection + Connection) * (Fitting + Hardware)
As a result, more than 30 patent applications and more than 170 utility model registration applications were extracted. However, by this prior art search, the same technology as the present invention could not be found.
[0009]
[Means for Solving the Problems]
The present invention is for achieving the above-described object.
The invention according to claim 1 is a composite handrail for connecting the ends of a composite handrail (20) formed by combining a plurality of long members having different linear expansion coefficients in the thickness direction along the longitudinal direction. The composite handrail (20) includes a long shade wood (30) for making up the interior surface of the composite handrail (20) and the shade wood (30). And a cap core receiving material (40) made of metal having a larger linear expansion coefficient than the cap lumber (30), and the cap lumber (30) includes the cap lumber main body (32) and the cap lumber main body. (32) covering the surface of the cap body and soft body ( 33) made of a softer material than the cap body (32), near the center of the cap base (40) , the composite handrail (20) A slide groove (41) extending in the longitudinal direction from the end of each side is formed, and each end is inserted into the slide groove (41) at the end of the composite handrail (20) to be connected. The bar-shaped mounting member (60) connecting the ends of the composite handrail (20) by being fixed to each other, and the end of the composite handrail (20) in a state assembled to the outside of the mounting member (60) A joint ring (10) sandwiched between the parts, the joint ring (10) is formed of a soft material softer than each long member forming the composite handrail (20) , and the joint ring ( interior side of the surface 10) is to be positioned inside the side of the composite from the surface of the composite while being formed continuously on the surface of the composite handrail (20) as seen from the outside railing (20) handrail (20) It is characterized by being formed .
[0010]
Here, the “thickness direction” refers to, for example, the thickness direction of the surface material forming the surface of the composite handrail (20) and the core material located at the center of the composite handrail (20). And, “combining a plurality of long members in the thickness direction” means that, for example, when the composite handrail (20) is formed in a cylindrical shape, the long members overlap in the radial direction from the center side to the surface side. This means the combined state.
Specifically, for example, a long shade wood (30) for making up the indoor side surface of the composite handrail (20), and the shade wood (30) is fitted on the outside and the core material of the composite handrail (20) This is a combination of long members composed of a long headboard receiving core material (40) that is a radial combination. Furthermore, when the shade wood (30) is formed from two members such as a body member and a soft soft member that covers the surface of the body member instead of a single member, This includes a state in which the main body member and the soft member of the cap lumber (30) are combined in the thickness direction.
[0011]
According to the present invention, the joint ring (10) made of a soft material softer than the long member forming the composite handrail (20) is used at the connection between the ends of the composite handrail (20). , Which can also be used for composite handrails (20) made of materials with different linear expansion coefficients, such as the cap wood (30) for decorating the indoor surface and the cap base material (40) made of metal fitted on the outside It is. That is, even if the linear expansion coefficients of the long members constituting the composite handrail (20) are different, and each member is expanded or contracted by a different deformation amount in the longitudinal direction, the joint ring is elastically deformed, so that Can absorb the deformation. As a result, the gap between the joint ring (10) and the composite handrail (20) can be suppressed, and the occurrence of bulge due to the extension can be suppressed, and the appearance of the composite handrail (20) including the connection portion can be maintained well. It can be done.
Further, in the above-described composite handrail (20), the cap material core material (40) made of metal can secure the strength of the composite handrail (20), and the cap material (30) is made of the composite handrail (20). A material can be selected as a decorative material without particularly considering strength. As a result, it is possible to select a material suitable for the interior appearance without suppressing the strength, and it is possible to obtain a composite handrail (20) having a good appearance.
[0012]
In addition, since the joint ring (10) is sandwiched between the ends of the composite handrail (20), the ends of the composite handrail (20) are brought into contact with each other without contacting the ends. Can be pulled apart. As a result, even if the edges of adjacent composite handrails (20) cannot be formed flush with each other due to dimensional errors or the like, it can be made inconspicuous and a good appearance can be obtained. it can.
[0013]
The `` soft material softer than the long member forming the composite handrail (20) '' here refers to a member having a smaller hardness than the member forming the composite handrail (20), such as rubber, It refers to a soft resin or the like .
[0014]
Further , according to the present invention, the surface on the indoor side of the joint ring (10) is continuously formed on the surface of the composite handrail (20), and the composite handrail (20) has a surface more than the surface of the composite handrail (20). Since it is formed so as to be located on the inner side, the joint ring (10) does not protrude from the surface of the composite handrail (20). As a result, it is possible to suppress the joint ring (10) from being caught by a hand moving in the longitudinal direction along the surface of the composite handrail (20) and being turned up between the ends of the composite handrail (20).
Furthermore, since the surface of the joint ring (10) is retracted from the surface of the composite handrail (20), when the hand between the ends of the composite handrail (20) is gripped by hand, the hand bites between the ends, The grip force can be increased, and the grip can be held securely.
[0015]
In addition, according to the present invention, the interior side surface of the joint ring (10) is formed so as to be visible from the outside, so that the space between the composite handrails (20) can be emphasized. Thereby, the joint ring (10) can be used as an accent on the appearance design of the composite handrail (20), and good appearance quality can be obtained.
[0016]
[0017]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in more detail with reference to the drawings.
1 to 5 show an embodiment of the present invention. FIG. 1 is an exploded view of an end portion of a composite handrail. FIG. 2 is a state in which an attachment member is inserted into the end portion of the composite handrail. FIG. 3 is an exploded view, FIG. 3 is a front view showing a state in which composite handrails are connected, FIG. 4 is a front view of the joint ring, and FIG. 5 is a sectional view taken along line AA of the joint ring in FIG.
[0018]
First, the configuration of the present embodiment will be described.
The present embodiment is a joint ring 10 that is sandwiched between the end portions of the handrails in order to connect the end portions of the long handrails formed on the side walls of the stairs or the like along the longitudinal direction. Specifically, the joint ring 10 is formed by connecting the composite handrails 20 to each other in order to connect the ends of the composite handrails 20 in which a plurality of long members having different linear expansion coefficients are combined in the thickness direction. Between the two ends.
[0019]
The joint ring 10 has a substantially thin disk-shaped disk portion 11 whose overall shape matches the cross section of the composite handrail 20, and protrudes from the approximate center of the surface of the disk portion 11 outward in the vertical direction. And a trapezoidal protrusion 12. The disk portion 11 is formed with a ring opening 13 that is partially cut out in a square shape and opened. In addition, the disc portion 11 includes an outer peripheral portion 14 that is formed so that its outer peripheral edge is thick, and whose vertical cross-sectional shape is substantially Y-shaped and whose outer peripheral surface is slightly concave. ing. That is, the surface on the indoor side of the outer peripheral portion 14 of the joint ring 10 is continuously formed on the surface of the composite handrail 20 so that it can be seen from the outside, and is located on the inner side of the composite handrail 20 with respect to the surface of the composite handrail 20 It is formed as follows.
The joint ring 10 is made of a soft material made of a soft vinyl chloride resin, which is softer than each long member forming the composite handrail 20. Of course, the material of the joint ring 10 is not limited to soft vinyl chloride resin, but may be other soft resin material or rubber as long as it is softer than each member forming the composite handrail 20 It is.
[0020]
Between the end portions of the composite handrail 20, a handrail bracket 70 for fixing the composite handrail 20 to the building housing 90 is formed. The handrail bracket 70 includes a bracket main body 50 having one end fixed to the building housing 90 and an attachment member 60 attached to the end of the bracket main body 50 on the side opposite to the building housing. The bracket body 50 is in the shape of a strip and has a substantially J-shaped longitudinal section. The bracket body 50 is formed on the side of the building housing 90 in a flange shape so as to follow the building housing 90 and is fixed to the building housing 90 by three housing fixing screws 51.
[0021]
The mounting member 60 has a square bar shape as a whole, is arranged so that the center of the mounting member 60 is located at the upper end of the bracket body 50, and is fixed to the bracket body 50 from above by two bracket fixing screws 61. ing. Then, the mounting member 60 is screwed upward from the lower surface of the mounting member 60 in order to fix the mounting member 60 and the composite handrail 20, and a slide fixing screw 62 whose front end protrudes on the upper surface of the mounting member 60 (FIG. 2). Two slide fixing screws 62 are formed on the left and right sides of the mounting member 60 to which the bracket body 50 is fixed.
[0022]
The composite handrail 20 is made of a long-shaped shade wood 30 for making up the interior surface of the composite handrail 20 and an aluminum metal having a linear expansion coefficient larger than that of the shade wood 30 while fitting the shade wood 30 on the outside. It is provided with a headwood core 40. The shade wood 30 includes a shade wood opening 31 that opens downward along the longitudinal direction.
Furthermore, the coping member 30 is provided with a coping member body 32, and a coping material soft portion 33 made of soft material than coping material body 32 covering the surface of the coping material body 32.
[0023]
The outer surface of the head member 40 is formed in a substantially cylindrical shape so that its outer surface can be fitted into the inner surface of the head member 30. The coping receiving core member 40 includes a core member opening 43 that opens downward along the longitudinal direction at the lower portion thereof. Then, the handrail opening 21 having a substantially rectangular shape in the longitudinal section and opening toward the handrail bracket 70 side is formed by the headwood opening 31 of the headwood 30 and the core opening 43 of the headboard receiving core 40. Is formed.
In addition, in the coping receiving core member 40, a mounting groove 60 is inserted in the vicinity of the center of the cross section of the composite handrail 20, and a slide groove 41 that can slide only in the longitudinal direction of the composite handrail 20 is formed.
[0024]
The headboard 40 is formed with an insertion groove 42 into which the tip of the slide fixing screw 62 protruding from the mounting member 60 abuts at the upper end of the handrail opening 21 and into which the protruding portion 12 of the joint ring 10 is inserted. Then, the slide fixing screw 62 abuts the insertion groove 42 via the mounting member 60 to fix the mounting member 60 inside the slide groove 41, thereby allowing the outer surface of the mounting member 60 to move inside the slide groove 41. It is formed on the surface so that it can be pressed.
[0025]
Next, the construction method of the connection part of the composite handrail 20 using the joint ring 10 according to the present embodiment will be described.
First, the cap 30 is attached to the outer surface of the cap receiving core 40.
Next, the attachment member 60 is attached to the end of the handrail bracket 70 on the side opposite to the building housing using the bracket fixing screw 61.
Next, as shown in FIG. 1, the left side of the mounting member 60 fixed to the handrail bracket 70 is inserted into the slide groove 41 of the composite handrail 20 located on the left side of the handrail bracket 70.
[0026]
Next, as shown in FIG. 2, the joint ring 10 is pushed from the right side toward the mounting member 60 so that the mounting member 60 fits into the ring opening 13 of the joint ring 10. Then, the left protruding portion 12 of the joint ring 10 is inserted into the insertion groove 42 of the headboard receiving core member 40 of the left handrail 20.
Next, the right side of the mounting member 60 is inserted into the slide groove 41 of the headboard receiving core member 40 located on the right side of the handrail bracket 70 in the same manner. Then, the right protruding portion 12 of the joint ring 10 is inserted into the insertion groove 42 of the headboard receiving core member 40 of the composite handrail 20.
[0027]
Then, the attachment member 60 is slid into the slide groove 41, and the attachment member 60 is moved to a predetermined position inside the slide groove 41. Then, the end of the handrail bracket 70 is fixed to the building housing 90.
Next, the mounting member 60 is fixed at a predetermined position inside the slide groove 41 by the slide fixing screw 62. Thereby, the composite handrail 20 can be fixed to the building housing 90 via the handrail bracket 70.
[0028]
Note that the handrail bracket 70 may be fixed to the building housing 90 after the mounting member 60 is inserted into the slide groove 41 of the composite handrail 20 as described above. The slide groove 31 of the composite handrail 20 may be inserted and attached to the attachment member 60 of the fixed handrail bracket 70.
Next, the operation and effect of the joint ring 10 according to the present embodiment will be described.
[0029]
According to the present invention, the joint ring 10 is formed of a soft material softer than the long member of the cap member 30 and the cap member 40 that forms the composite handrail 20, and thus the cap member 30 and the cap member. Even if the linear expansion coefficient of the core member 40 is different and each member is expanded or contracted by a different deformation amount in the longitudinal direction, the deformation can be absorbed by the elastic deformation of the joint ring.
That is, the composite handrail 20 is formed of a cap wood 30 made of resin that makes up the interior surface of the handrail, and a cap wood receiving core member 40 made of aluminum metal that fits the cap wood 30 on the outside. For this reason, even if the metal headstock 40 made of metal is greatly elongated or shrunk in the longitudinal direction than the headwood 30, the occurrence of gaps or rises between the joint ring 10 and the composite handrail 20 is suppressed. And the appearance of the composite handrail 20 can be maintained well. Furthermore, the metal headboard 40 made of metal can secure the strength of the composite handrail 20, and the hardwood 30 can be selected as a good cosmetic material without particularly considering the strength of the composite handrail 20. Can do. As a result, it is possible to select a material suitable for the interior appearance without suppressing the strength, and the composite handrail 20 having a good appearance can be obtained.
[0030]
Further, since the joint ring 10 is sandwiched between the end portions of the composite handrail 20, the end portions can be pulled apart without contacting the end portions of the composite handrail 20. As a result, even if the edges of the adjacent composite handrails 20 cannot be formed flush with each other due to dimensional errors or the like, they can be made inconspicuous and a good appearance can be obtained.
[0031]
Further, the interior surface of the joint ring 10 is formed continuously with the surface of the composite handrail 20 and is positioned so as to be located on the inner side of the composite handrail 20 with respect to the surface of the composite handrail 20. The ring 10 does not protrude from the surface of the composite handrail 20. Thereby, it can be suppressed that the joint ring 10 is caught by a hand moving in the longitudinal direction along the surface of the composite handrail 20 and is turned up and removed from between the ends of the composite handrail 20.
Furthermore, since the surface of the joint ring 10 is retracted from the surface of the composite handrail 20, when the hand between the end portions of the composite handrail 20 is gripped by the hand, the hand bites between the end portions to increase the grip force. And can hold it securely.
[0032]
Moreover, since the joint ring 10 is formed so that the indoor side surface of the joint ring 10 according to the present invention can be seen from the outside, the space between the composite handrails 20 can be emphasized. Thereby, by making the color of only the joint ring 10 different from the color of the surface of the composite handrail 20, it can be used as an accent on the external design of the composite handrail 20, and good appearance quality can be obtained. .
[0033]
【The invention's effect】
Since this invention is comprised as mentioned above, there exists an effect as described below.
According to the first aspect of the present invention, the surface of the composite handrail can be made up with the shade wood, a good appearance can be obtained, and the strength can be ensured by the shade wood core material made of metal. Provided is a connection structure for a composite handrail that can cope with linear expansion in the longitudinal direction of the composite handrail and can maintain the appearance of the entire handrail including the connection between the composite handrails. can do.
[0034]
Furthermore, according to the first aspect of the present invention , there is provided a connection structure of a composite handrail capable of smoothly moving the hand along the surface of the handrail including the connection section connected using the joint ring. be able to.
[Brief description of the drawings]
FIG. 1 is an exploded view of an end portion of a composite handrail according to an embodiment of the present invention.
FIG. 2 is an exploded view of an embodiment of the present invention in a state where an attachment member is inserted into an end portion of a composite handrail.
FIG. 3 is an embodiment of the present invention, and shows a front view of a state in which composite handrails are connected to each other.
FIG. 4 is a front view of a joint ring according to an embodiment of the present invention.
FIG. 5 is a cross-sectional view of the joint ring of FIG. 4 according to the embodiment of the present invention.
FIG. 6 is a longitudinal sectional view of a connecting portion between conventional handrails.
FIG. 7 is an external perspective view of a connection portion between conventional handrails.
[Explanation of symbols]
10 ... Joint ring, 11 ... Disc part, 12 ... Projection part, 13 ... Ring opening part, 14 ... Peripheral part, 20 ... Composite handrail, 21 ... Handrail opening part, 30 ... Caps wood, 31 ... Caps wood opening, 32 ... Bagwood main body, 33 ... Bagwood soft part, 40 ... Cathlet receiving core material, 41 ... Slide groove, 42 ... Insertion groove, 43 ... Core material opening, 50 ... Bracket body, 51 ... Castle fixing screw, 60 ... Mounting member, 61 ... Bracket fixing screw, 62 ... Slide fixing screw, 70 ... Handrail bracket, 90 ... Building frame, 110 ... Handrail joint bracket, 111 ... Handrail insertion part, 112 ... Fixing part, 113 ... Connecting part, 114 ... Convex step, 120 ... handrail, 130 ... screw, 140 ... fixing screw, 150 ... wall.

Claims (1)

A connection structure of a composite handrail for connecting end portions of a composite handrail formed by combining a plurality of long members having different linear expansion coefficients in the thickness direction along the longitudinal direction,
Composite handrail is provided with a coping member elongated that makeup the interior surface of the composite handrail, and a coping receiving core linear expansion coefficient than coping material is made of a large metal with fitting the coping member outwardly ,
The shade wood includes a shade wood body, and a shade wood soft portion made of a material softer than the shade wood body covering the surface of the shade wood body,
A slide groove extending in the longitudinal direction from the end of the composite handrail is formed in the vicinity of the center of the headboard receiving core material ,
Each end is inserted into and fixed to the slide groove at the end of the composite handrail to be connected, so that the end of the composite handrail is connected to each other and assembled outside the mounting member. A joint ring sandwiched between the ends of the composite handrail
This joint ring is formed from a soft material softer than each long member forming the composite handrail ,
In addition, the surface on the indoor side of the joint ring is formed continuously on the surface of the composite handrail so that it can be seen from the outside, and is formed so as to be located on the inner side of the composite handrail than the surface of the composite handrail. The connecting structure of the characteristic handrail.

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