JP4177739B2 - handrail - Google Patents

Description

  The present invention relates to a handrail installed on a handrail mounting portion of a structure.

  Conventionally, handrails installed on handrail mounting parts of other structures such as stairs, stair landings, lofts, balconies, etc., have a plurality of main pillars that are erected and fixed to the handrail mounting parts, and headboards that are erected on the upper ends of these. A horizontal support member that connects lower portions of adjacent main pillars, and a plurality of handrails disposed between the headboard and the horizontal support member (for example, see Patent Document 1).

JP-A-11-303353 (paragraphs 0018 to 0024, FIGS. 1 to 4 and FIG. 9)

  However, in such a handrail, all the loads acting on the headboard are concentrated on the main pillar, so the main pillar itself is composed of a heavy member, and the mounting structure of the main pillar and the handrail mounting portion is made into a heavy structure. However, there is a problem that the beauty is lost because it is heavy.

  In addition, since the dimensions and shapes of the main pillar to which a large load acts and the handrail to which no large load acts are not uniform, there is also a problem that it hinders a unified design.

  Furthermore, in order to secure a wide service space, for example, on stairs and balconies, it is necessary to reduce the installation space of the handrail, but the installation space is ultimately defined by the size and shape of the main pillar. Therefore, even if the handrail has a light structure, there is a limit to narrowing the installation space of the entire handrail.

  Therefore, the present invention is a handrail that has a sense of unity and can adopt a sophisticated design, and can be made lighter in structure for individual members constituting the handrail, and further, the installation space can be reduced. It is an object to provide a handrail that can be simplified.

The invention of claim 1, which is developed to solve such problems is a handrail which is mounted a plurality of step boards constituting stairs, comprising a coping and a grating unit disposed in each step board, the each grid unit has three and more baluster supporting the coping, and a connecting member connecting the upper ends of the respective baluster, and a base member connecting lower ends of said each baluster, each step board A number of notches corresponding to the number of the handrails are formed at the side ends of the handrails, and the lower ends of the handrails are inserted into the notches from the sides of the respective treads, member, wherein fixed to the lower surface of each step board, said three or more baluster is characterized in that it is erected fixed to all the base member.
Invention of Claim 2 is the handrail of Claim 1, Comprising: The said coping has the lower surface opened, and the said connection member is covered from the upper direction of the said connection member, The said connection member Is fixed to the inner upper surface of the headboard.
Invention of Claim 3 is the handrail of Claim 2, Comprising: The bracket is interposed between the upper end of the handrail, and the connection member, The upper part of the bracket is in the inside of the headboard. It is inserted.
Invention of Claim 4 is the handrail of Claim 1, Comprising: The said headboard is provided with the receiving material which the lower surface opened, and the cover which covers the said receiving material, The said connection member is the said receiving material. It is characterized by being fixed to the inner upper surface.
Invention of Claim 5 is the handrail of Claim 1, Comprising: The said headboard is provided with the receiving material which the lower surface opened, and the cover which covers the said receiving material, The inner upper surface of the said receiving material is A concave groove is formed along the longitudinal direction of the receiving member, and the connecting member is fitted into the concave groove.
Invention of Claim 6 is the handrail of Claim 4 or Claim 5, Comprising: The bracket is interposed between the upper end of the handrail, and the connection member, The upper part of the bracket is the said handrail. It is inserted in the receiving material, It is characterized by the above-mentioned.

The handrail according to the present invention is configured by connecting a plurality of lattice units along the longitudinal direction of the headboard, but all of the three or more handrails constituting each lattice unit are interposed via the base member. action are fixed to the tread plate, without the load acting on the coping concentrated on a specific baluster, further, since the upper ends of the balusters are integrated by a connecting member, the coping Te It is possible to reliably distribute the applied load to the plurality of handrails. In other words, it means that the load acting on the coping is supported distributed across multiple baluster, it is possible to achieve a light structuring of the mounting structure of a light-structured and baluster and step board of balusters itself As a result, it is possible to reduce the installation space. Also, according to this handrail, the load does not concentrate on a specific handrail, so the dimensions and shape of all handrails can be made the same, and as a result, a unified and sophisticated design Can be adopted.
Furthermore, according to this handrail, since at least three handrails are arranged on one step board, it is possible to give a sense of security to a person who goes up and down the stairs.
Moreover, according to this handrail, since the operation | work which fixes each handrail element to a footboard in a construction site becomes unnecessary, a handrail attachment operation | work becomes easy. That is, if a predetermined number of handrails are connected and integrated in advance with a base member, each handrail is erected and fixed to the footboard simply by attaching the base member to the footboard.
Needless to say, the caps are not limited to wooden ones but can be made of various materials such as synthetic resin, aluminum alloy, and stainless steel.

The invention of claim 7 is the handrail according to any one of claims 1 to 6 , wherein the connecting member is placed on an upper end surface of each handrail, and each handrail is The connecting member is fixed to the connecting member by a screw screwed from above, and the connecting member is fixed to the headboard by a screw screwed from below.

  According to this handrail, the screw for fixing the handrail to the connecting member is not exposed to the outer surface.

Invention of Claim 8 is the handrail as described in any one of Claim 1 thru | or 7, Comprising: The said base member by the some screw | thread in which each said handrail screwed from the lower side of the said base member. The plurality of screws are arranged along a direction perpendicular to the longitudinal direction of the headboard.

  In this handrail, each handrail is fixed by a plurality of screws arranged along a direction perpendicular to the longitudinal direction of the headboard, so that direction (that is, a direction that normally acts when a person leans against the handrail). High resistance to load acting on Further, since the screw for fixing the handrail to the base member is not exposed at all on the upper surface of the handrail mounting portion, the aesthetic appearance is not impaired.

Invention of Claim 9 is the handrail as described in any one of Claim 1 thru | or 8 , Comprising: Each said handrail consists of extruded shapes made from aluminum alloy, and each has the same cross-sectional shape. Features.

  According to such a handrail, since the handrail is made of an extruded shape made of an aluminum alloy, it is possible to obtain a handrail that is lightweight, has high strength, and has a good appearance.

According to the handrail according to the present invention, it means that the load applied to the coping is supported distributed across multiple baluster, light structuring of the mounting structure of the light structuring and baluster and step board of balusters itself As a result, it is possible to narrow the handrail installation space. In addition, since the load does not concentrate on a specific balustrade, it is possible to make the dimensions and shapes of all balustrades the same, and as a result, adopt a sophisticated design with a sense of unity. It becomes possible.

  Hereinafter, the best mode for carrying out the present invention will be described in detail with reference to the accompanying drawings.

(First embodiment)
As shown in FIG. 1, the handrail T1 according to the first embodiment is installed on a step board F, F,... As a handrail mounting portion of a structure, and has the same gradient as the stairs above each step board F. The installed headboard K and a plurality of lattice units U, U,... Connected in the longitudinal direction of the headboard K are configured.

  As shown in FIG. 2, the headboard K includes a cover 10 that is held by a person who goes up and down the stairs and a receiving member 20 that is inserted into the cover 10. As shown in FIG. 4A, the cover 10 is made of an extruded product made of a synthetic resin having a substantially circular cross section with an open bottom surface. Moreover, the receiving material 20 consists of the extruded shape part made from the aluminum alloy which the lower surface opened, and the ditch | groove 20a is formed in the inner upper surface along the extrusion direction (longitudinal direction). Needless to say, the material of the cover 10 and the receiving material 20 is not limited to synthetic resin or aluminum alloy, and various materials such as synthetic resin and stainless steel can be used. In the present embodiment, the cover 10 and the receiving member 20 constitute the headboard K. However, the headboard K may be integrally formed, and in this case, wood or the like may be used. As shown in FIG. 4B, a cap 11 that closes the opening is fitted into the opening of the cover 10.

  As shown in FIG. 1, the lattice unit U is installed on the tread F, and connects the three handrails 30, 30, 30 that support the headboard K and the upper ends of the handrails 30, 30, 30. And a base member 50 that connects and integrates the lower ends of the handrails 30, 30, 30. The three handrails 30, 30, 30 are all provided. Is fixed to the tread board F through the base member 50 and is fixed to the headboard K through the connecting member 40. That is, the lattice unit U is obtained by integrating the three balustrades 30, 30, 30, the connecting member 40, and the base member 50 in a panel shape. In this embodiment, since the bracket 35 is interposed between the upper end of each balustrade 30 and the connecting member 40, each balustrade 30 is connected to the Kasagi K via the bracket 35 and the connecting member 40. It will be fixed to.

  As shown in FIG. 2, the handrail 30 is made of an extruded material made of a substantially rectangular tube-shaped aluminum alloy having a hollow portion 31, and has two lower ends screwed from below the base member 50. It is fixed to the upper surface of the base member 50 by tapping screws N1, N1. The hollow portion 31 is formed with a pair of screw pockets 31a and 31a along the extrusion direction (longitudinal direction). Two tapping screws N1 and N1 are screwed into the lower ends of the screw pockets 31a and 31a. Entered. A rivet hole 30a is formed in the upper part of the handrail 30 in a direction perpendicular to the longitudinal direction. As shown in FIG. 3, when the interval between the handrails 30 and 30 adjacent to each other is d and the stair inclination angle is θ, the handrails 30 arranged on the lower floor side are closer to the upper floor side. It is shorter than the handrail 30 to be arranged by d × tan θ.

  As shown in FIG. 2, the bracket 35 includes a leg portion 36 inserted into the hollow portion 31 of the handrail 30 from above, a lid portion 37 that closes the upper surface of the handrail 30 when the leg portion 36 is inserted, It is a cast member made of an aluminum alloy that is composed of a column part 38 that rises upward from the upper surface of the lid part 37. The leg part 36 is inserted into the hollow part 31 of the handrail 30 and then drilled in the leg part 36. The rivet R1 is driven into the rivet hole 36a and the rivet hole 30a of the handrail 30 and caulked to be fixed to the upper end of the handrail 30. As shown in FIG. 4A, the column portion 38 rises upward while being inclined toward the center of the staircase, and is further bent so that the upper portion thereof is orthogonal to the headboard K as shown in FIG. Yes. Further, the upper portion of the bracket 35 is inserted into the inside from the openings of the cover 10 and the receiving material 20.

  As shown in FIG. 2, the connecting member 40 is made of an aluminum alloy bar (so-called flat bar) having a cross-sectional shape that just fits in the recessed groove 20 a (see FIG. 4A) of the headboard K, and the lower side thereof. Is fixed to the receiving member 20 of the headboard K by a tapping screw N3 screwed in from the top. The connecting member 40 has screw holes 40a, 40a, 40a at positions corresponding to the three handrails 30, 30, 30, and is screwed into the upper end of each bracket 35 while inserting the tapping screw N2 from above. By being inserted, it is fixed to each bracket 35. In this way, the tapping screw N2 is not exposed on the outer surface.

  As shown in FIGS. 5 (a) and 5 (b), the base member 50 is made of an aluminum alloy plate having a rectangular shape in plan view, and three handrails 30, 30, and 30 are erected on the side edges thereof. Fixed portions 51, 51, 51 to be fixed are formed. Screw holes 51a and 51a are formed in the fixing portion 51 along a direction P orthogonal to the longitudinal direction of the headboard K (see FIG. 2). The screw holes 51a and 51a correspond to the screw pockets 31a and 31a (see FIG. 2) of the handrail 30. After the handrail 30 is erected on the upper surface of the fixing portion 51, the tapping screws N1 and N1 are attached. The handrail 30 is fixed to the base member 50 when screwed into the lower ends of the screw pockets 31a, 31a (see FIG. 2) of the handrail 30 while being inserted into the screw holes 51a, 51a from the lower side of the base member 50. The base member 50 has a plurality of screw holes 50a in addition to the screw holes 51a of the fixing portion 51. A wood screw N4 is inserted into the screw hole 50a from the lower side of the base member 50, and the tread F It is fixed to the tread F by being screwed into the lower surface of the board. In this embodiment, two screw holes 51a and 51a are formed in each fixing part 51. However, more screw holes are fixed along the direction P perpendicular to the longitudinal direction of the cap board K (see FIG. 2). 51 may be formed.

  As shown in FIG. 2, the step board F has a cutout portion F <b> 1 having a shape in which the lower end portion of the handrail 30 is just accommodated in the side end portion, and the base member 50 is just accommodated in the back surface of the side end portion. It has a shaped recess F2. The notch F1 has an opening through which the lower end portion of the handrail 30 can be inserted from the side of the tread F, and the recess F2 has an opening through which the base member 50 can be inserted from the side of the tread F. The tread board F is not limited to a wooden one, and may be made of steel or other materials.

  As described above, according to the handrail T1 according to the present embodiment, as shown in FIG. 1, in each lattice unit U, all of the three consecutive handrails 30, 30, 30 are erected on the tread board F. Since it is fixed, the load acting on the headboard K does not concentrate on a specific balustrade, and the upper ends of the three balustrades 30, 30, 30 are integrated by the connecting member 40. Thus, the load acting on the headboard K can be reliably distributed to the plurality of handrails 30. The same applies to the entire handrail constructed by connecting a plurality of such lattice units U. That is, since the load acting on the headboard K is distributed and supported by the plurality of handrails 30, the handrail 30 itself is lightly structured and the structure of the handrail 30 and the footboard F is lightly structured. As a result, the installation space for the handrail T1 can be reduced.

  Further, since the load does not concentrate on a specific balustrade, the cross-sectional dimensions of all balustrades 30 can be made the same. As a result, as shown in FIG. The handrail T1 having the designed design can be obtained. Furthermore, since the three handrails 30, 30, 30 are arranged on one step board F, the interval between the handrails 30, 30 adjacent to each other is reduced, and as a result, a sense of security is given to those who go up and down the stairs. be able to.

  In addition, since the lattice unit U is given a predetermined strength when the three balustrades 30, 30, 30 are integrated into a panel shape by the connecting member 40 and the base member 50, a plurality of lattice units U are provided. , U,... Are configured with a continuous handrail T1 having a very high strength.

  Further, as shown in FIG. 2, each handrail 30 is fixed to the base member 50 by two tapping screws N1, N1 screwed from below the base member 50, and the two tapping screws N1. , N1 are arranged along a direction P perpendicular to the longitudinal direction of the headboard K, and therefore, a high resistance force is exerted against a load acting in this direction P. Moreover, since the tapping screws N1 and N1 are not exposed at all on the upper surface of the tread board F, the aesthetic appearance is not impaired.

  In addition, since the headboard K (receiving member 20) and each handrail 30 are extruded shapes made of an aluminum alloy, the handrail can be light, high in strength and good in appearance.

  In addition, when constructing the handrail T1 at the construction site, the lattice unit U is formed by previously integrating the three handrails 30, 30, 30 into a panel shape with the connecting member 40 and the base member 50, After constructing the staircase, the lattice unit U may be installed on the side end of the tread board F, and then the headboard K may be disposed on the upper ends of the plurality of lattice units U, U,.

  More specifically, as shown in FIG. 2, in each of the plurality of treads F, F,..., The lattice unit U is positioned on the side, and the lower end of each handrail 30 is connected to the notch F <b> 1. Next, the base member 50 is inserted into each of the recesses F2, and then a wood screw N4 is screwed into the tread F from the lower side of the base member 50 to fix the base member 50 to the tread F, and the lattice unit U is installed. After installing the lattice unit U on the treads F, F,..., The headboard K may be attached to the upper ends of the plurality of lattice units U, U,. Further, as shown in FIGS. 2 and 3, in order to attach the headboard K to each lattice unit U, the headboard K is covered from above the connecting member 40, and the concave groove 20a of the headboard K (see FIG. 4A). The tapping screw N3 may be screwed into the receiving member 20 from the lower side of the connecting member 40 after the connecting member 40 is fitted into the receiving member 20.

  In this way, if the three handrails 30, 30, and 30 are erected and fixed to the base member 50 in advance, the operation of fixing the individual handrails 30 to the footboard F at the construction site becomes unnecessary. Installation work becomes very easy, and work efficiency can be improved. In addition, since the upper ends of the three handrails 30, 30, and 30 are integrated by the connecting member 40, the work of fixing the individual handrails 30 to the headboard K is not required.

  In this embodiment, the handrail 30 is erected and fixed to the step board F via the base member 50. However, the present invention is not limited to this, and the base member 50 is omitted and the handrail 30 is directly attached to the step board F. You may fix upright. Even in this case, the load acting on the cap board K does not concentrate on a specific balustrade, and the load acting on the cap board K is distributed and supported by a plurality of balustrades 30. Therefore, the balustrade 30 itself. It is possible to achieve a lighter structure and a lighter structure for the attachment structure of the handrail 30 and the footboard F, and as a result, it is possible to reduce the installation space.

  Moreover, in this embodiment, although the bracket 35 was interposed between the handrail 30 and the connection member 40, it is not limited to this, Although illustration is abbreviate | omitted, a connection member is directly attached to the upper end of a handrail. It may be fixed.

  Moreover, in this embodiment, although the lattice unit U was comprised with the three handrails 30, you may comprise a lattice unit with the four or more handrails 30. FIG. When the number of handrails 30 is increased, the size of the load acting on one handrail 30 is reduced, so that the cross-sectional dimension can be reduced, and as a result, the handrail installation space can be further reduced. It becomes possible. In the present embodiment, the interval between the handrails 30 and 30 between the upper and lower adjacent stepboards F and F (the handrailer 30 at the foremost portion of the upper stepboard F and the handrail at the rearmost portion of the lower stepboard F). 30) is formed at the same interval as the interval between the handrails 30 and 30 attached to the same tread board F, forming a unified design throughout.

( Reference embodiment)
In the first embodiment described above, a plurality of lattice units are connected in the longitudinal direction of the headboard to constitute the handrail. However, all of the plurality of handrails are erected and fixed to the handrail mounting portion of the structure. If it is a thing, it does not need to be set as the structure which arranges a some grid | lattice unit continuously.

As shown in FIG. 7, the handrail T2 according to the reference embodiment connects the upper end of the top board Fr1 and the upper edge of the headboard K, three or more handrails 30, 30,. The connecting member 40 ′ to be integrated and the base member 50 ′ to be integrated by connecting the lower ends, and all of the three or more handrails 30, 30,... Are interposed via the base member 50 ′. And fixed to the headboard K via the connecting member 40 '. In the present embodiment, since the bracket 35 is interposed between the upper end of each handrail 30 and the connecting member 40 ', each handrail 30 is interposed via the bracket 35 and the connecting member 40'. It will be fixed to Kasagi K. In the drawing, the symbol Fr2 is an edge member that covers the side end portion of the base member 50 ′. The edge member Fr2 is formed with a notch having a shape that just fits the lower end of the handrail 30.

  Here, since the configuration of the headboard K, the handrail 30 and the bracket 35 is the same as that described in the first embodiment, a detailed description thereof will be omitted.

  The connecting member 40 'has an aluminum alloy having a cross-sectional shape that just fits in the recessed groove 20a (see FIG. 4 (a)) of the headboard K and a length that can connect at least three continuous handrails 30. It is made of a bar material (a so-called flat bar) and is fixed to the headboard K by a tapping screw (not shown) screwed from below. Further, the connecting member 40 ′ has a plurality of screw holes (not shown) at positions corresponding to the handrails 30, 30,..., And tapping screws (not shown) are inserted into the screw holes. Each bracket 35 is fixed to each bracket 35 by being screwed into the upper end thereof. The connecting member 40 ′ may be any member that connects at least three continuous handrails 30. Similarly, the base member 50 ′ may connect at least three consecutive handrails 30. That's fine. That is, the connecting member 40 ′ does not need to have a length that extends over the entire length of the headboard K, and may be set to an appropriate length in consideration of workability and the like.

  The base member 50 ′ is made of an aluminum alloy plate having a length capable of connecting at least three continuous handrails 30, and a fixing portion 51 on which the handrails 30 are erected and fixed is formed on a side edge portion thereof. Has been. Screw holes 51 a and 51 a are formed in the fixing portion 51 along a direction orthogonal to the longitudinal direction of the headboard K. The screw holes 51a and 51a correspond to the screw pockets 31a and 31a (see FIG. 2) of the handrail 30. After the handrail 30 is erected on the upper surface of the fixing portion 51, the tapping screws N1 and N1 are attached. When screwed into the lower ends of the screw pockets 31a and 31a (see FIG. 2) of the handrail 30 while being inserted into the screw holes 51a and 51a from below the base member 50 ′, the handrail 30 is fixed to the base member 50 ′. . The base member 50 ′ has a plurality of screw holes 50 a in addition to the screw holes 51 a of the fixing portion 51. The wood member N 5 is screwed into the beam member H from the upper side of the base member 50 ′. Fixed to the top surface. Note that the base member 50 ′ only needs to connect at least three continuous handrails 30. That is, the base member 50 ′ does not need to have a length that extends over the entire length of the headboard K, and may be set to an appropriate length in consideration of workability and the like.

  As described above, according to the handrail T2 according to the present embodiment, all of the three or more continuous handrails 30, 30,... Are erected and fixed to the beam member H via the base member 50 ′. Therefore, the load acting on the headboard K does not concentrate on a specific handrail, and furthermore, the upper ends of three or more continuous handrails 30, 30,... Are integrated by the connecting member 40 ′. Thus, the load acting on the headboard K can be reliably distributed to the plurality of handrails 30, 30,. That is, since the load acting on the headboard K is distributed and supported by the plurality of handrails 30, 30,..., The handrail 30 itself is lightened and each handrail 30 and the beam member H (base member) are supported. 50 ') can be made lighter, and as a result, the installation space for the handrail T2 can be reduced.

  Further, since a predetermined strength is given when a predetermined number of handrails 30, 30,... Are integrated by the connecting member 40 'and the base member 50', the strength of the entire handrail is very high.

  Further, since the load does not concentrate on a specific handrail, the cross-sectional dimensions of all the handrails 30 can be made the same, and as a result, the handrail has a unified and refined design. T2 can be obtained.

  Further, each handrail 30 is fixed to the base member 50 'by two tapping screws N1, N1 screwed from the lower side of the base member 50', and the two tapping screws N1, N1 are fixed to the cap board K. Since it is arranged along the direction orthogonal to the longitudinal direction, a high resistance to a load acting in the direction orthogonal to the longitudinal direction is exhibited.

  When constructing the handrail T2 at the construction site, a plurality of handrails 30, 30,... Are erected and fixed to the base member 50 ′ in advance, and the base member 50 ′ is mounted on the upper surface of the beam member H. Next, after attaching the bracket 35 to the upper end of each balustrade 30, the upper ends (the upper ends of the brackets 35) of the plurality of balustrades 30, 30,. Thereafter, the cap 35 is covered with the brackets 35, 35,... And the connecting member 40 ′, and a tapping screw (not shown) may be screwed into the cap K from the lower side of the connecting member 40 ′.

  As described above, if the plurality of handrails 30, 30,... Are fixed in advance to the base member 50 ', the work of standing and fixing the individual handrails 30 to the beam member H at the construction site becomes unnecessary. Therefore, the handrail attachment work becomes very easy and the work efficiency can be improved. Further, since the upper ends of the plurality of handrails 30, 30,... Are integrated by the connecting member 40 ', the work of fixing the individual handrails 30 to the headboard K is not required.

  A bracket 35 is attached to the upper end of each handrail 30, and a plurality of brackets 35, 35,... Are integrated by a connecting member 40 ′ to form a panel-like unit, and then a base member is formed on the upper surface of the beam member H. 50 'may be placed and fixed, and furthermore, the base member 50' may be placed and fixed on the upper surface of the beam member H after the headboard K is attached to the connecting member 40 '.

  In the present embodiment, each handrail 30 is erected and fixed to the beam member H via the base member 50 ′. However, the present invention is not limited to this, and the base member 50 ′ is omitted, and each handrail 30. May be directly erected and fixed to the beam member H. Similarly, the connecting member 40 ′ may be omitted, and each bracket 35 may be directly fixed to the headboard K. Even in such a case, the load acting on the headboard K does not concentrate on a specific handrail, and the load acting on the headboard K is supported by being distributed to the plurality of handrails 30, 30,. Therefore, it is possible to reduce the structure of the handrail 30 itself and to reduce the mounting structure of each handrail 30 and the beam member H, and as a result, it is possible to reduce the installation space of the handrail T2. It becomes.

  Moreover, in this embodiment, although the bracket 35 was interposed between each handrail 30 and connection member 40 ', it is not limited to this, Although illustration is abbreviate | omitted, a connection member is attached to the upper end of a handrail. May be fixed directly.

  In each of the above-described embodiments, the handrail T1 installed on the step board F (see FIG. 6) and the handrail T2 installed on the beam member H (see FIG. 7) are exemplified. The handrail is not limited to this, and may be installed on the side girders of the staircase, and further, on the handrail mounting portion of various structures such as the stair landing, balcony, and waist wall. Can be installed. That is, the handrail according to the present invention can be used as a balcony handrail, a window handrail, etc. in addition to a stair handrail. In addition, although a handrail attachment part may be formed in a wall surface in this case, although illustration is abbreviate | omitted, what is necessary is just to bend the lower part of a handrail. In the present embodiment, the plurality of handrails 30, 30,... Are arranged at equal intervals, that is, the intervals between the adjacent handrails 30, 30 are all formed at the same interval. A unified design is formed throughout. Further, as the headboard K is supported only by the handrails 30, 30... As in the present embodiment, the design becomes extremely sophisticated.

It is an expansion perspective view of the handrail concerning a first embodiment. It is a disassembled perspective view of a lattice unit. It is an enlarged side view of a lattice unit upper part. (A) is X1-X1 sectional drawing of FIG. 3, Comprising: A figure which shows the state which isolate | separated the headboard and the bracket, (b) is X2-X2 sectional drawing of FIG. (A) is a top view of a base member, (b) is an enlarged side view of the lattice unit lower part. It is the whole handrail side view concerning a first embodiment. It is an expansion side view of the handrail which concerns on reference embodiment.

Explanation of symbols

T1, T2 Handrail K Kasagi U Lattice unit 30 Handrail 40, 40 'Connecting member 50, 50' Base member

Claims (9)

A handrail installed on a plurality of treads constituting the stairs ,
A headboard and a lattice unit disposed on each of the treads ,
Each lattice unit has three or more balustrades that support the headboard, a connecting member that connects the upper ends of the balustrades, and a base member that connects the lower ends of the balustrades ,
A number of notches corresponding to the number of handrails are formed at the side end of each of the treads,
The lower end of each balustrade is inserted into each notch from the side of each tread,
The base member is fixed to the lower surface of each of the treads,
The handrail characterized in that all of the three or more handrails are erected and fixed to the base member . The underboard has an open bottom surface, and is covered with the connecting member from above the connecting member,
The handrail according to claim 1, wherein the connecting member is fixed to an inner upper surface of the headboard. A bracket is interposed between the upper end of the handrail and the connecting member,
The handrail according to claim 2, wherein an upper portion of the bracket is inserted into the headboard. The headboard includes a receiving material whose bottom surface is opened, and a cover that covers the receiving material,
The handrail according to claim 1, wherein the connecting member is fixed to an inner upper surface of the receiving member. The headboard includes a receiving material whose bottom surface is opened, and a cover that covers the receiving material,
On the inner upper surface of the receiving material, a groove is formed along the longitudinal direction of the receiving material,
The handrail according to claim 1, wherein the connecting member is fitted in the concave groove. A bracket is interposed between the upper end of the handrail and the connecting member,
The handrail according to claim 4 or 5, wherein an upper portion of the bracket is inserted into the receiving member. The connecting member is placed on the upper end surface of each handrail;
Each handrail is fixed to the connecting member by a screw screwed from above the connecting member,
The handrail according to any one of claims 1 to 6, wherein the connecting member is fixed to the headboard by a screw screwed from below. Each handrail is fixed to the base member by a plurality of screws screwed from below the base member;
The handrail according to any one of claims 1 to 7, wherein the plurality of screws are arranged along a direction orthogonal to a longitudinal direction of the headboard. The handrail according to any one of claims 1 to 8 , wherein each handrail is made of an extruded shape made of an aluminum alloy and has the same cross-sectional shape.

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