JP4117362B2 - Handrail and handrail angle adjustment mechanism - Google Patents

Description

  The present invention relates to a handrail and a handrail angle adjusting mechanism.

  In homes where the elderly are, it is common to provide handrails near the floor or entrance of the residence to assist the elderly walking. Such a handrail is composed of a gripping part for a walking person to grip, a plurality of support pillars that support the gripping part, and an installation part that fixes the support pillar to an installation surface such as a floor or the ground.

When installing such a handrail on a floor or ground with a slope, in order to keep the support column vertical, the angle adjustment unit is set to 90 degrees with respect to the installation surface in accordance with the inclination of the installation surface. It is necessary to fix at an angle other than.
However, providing an installation unit corresponding to the inclination angle for each inclination of the slope described above is not practical in terms of labor and cost.
In this respect, if one installation unit can provide a slope corresponding to various inclination angles of the slope, the above problem does not occur. However, a handrail that can cope with various slopes, that is, a detailed installation surface of the support column. A handrail capable of adjusting the angle with respect to has not been put into practical use.
In recent years, in consideration of such problems, a support for supporting a handrail at a tip portion is fixed to a handrail installation object having an inclination angle via a base article, and the basic article can be attached to the handrail installation object. It shall have a 1st foundation member and the 2nd foundation member with which the foundation part of a support | pillar is couple | bonded, and the 2nd foundation member shall be rotatable by the curved convex part and curved concave part which surface-contact with respect to a 1st basic member. There has been proposed a handrail support structure in which the second base member is fastened to the first base member with bolts and nuts at a predetermined rotational position (Patent Document 1).

JP-A-10-299212

  The invention of Patent Document 1 adopting such a configuration can easily perform the work of fixing the support column at a predetermined angle to the handrail installation, and is versatile for various handrail installations having different inclination angles. It is intended to provide a handrail support structure having the following.

However, in the invention disclosed in Patent Document 1, the angle between the first foundation part and the second foundation member determined before tightening the bolt and nut is determined by the operator using both foundation members. Even if it is firmly held in place, it often shifts during the tightening operation, resulting in an angle different from the initially determined angle after completion of the operation.
Further, in the invention disclosed in Patent Document 1, it is necessary to insert a tightening tool such as a wrench into the inside of each column and perform the tightening work for the bolt and nut described above. Is difficult and extremely cumbersome.
And the trouble of inserting such a tightening tool into a support | pillar and working generate | occur | produces generation | occurrence | production of the angle shift | offset | difference between said both base members.

  On the other hand, the inventor of the present application has proposed a handrail as shown in Japanese Patent Application No. 2002-182716 in consideration of such points.

  This is an angle adjustment in a handrail provided with a gripping part, a support column that supports the gripping part, and an angle adjustment part, and the angle between the support and the installation surface or the gripping part is adjusted by the angle adjustment part. The part has a joint including two members, a positioning member and a rotating member that rotates relative to the positioning member. The rotating member includes a female screw and is screwed into the female screw. A fixing member that reaches the positioning member is arranged, and the positioning member is provided with a plurality of receiving portions for receiving the fixing member, thereby fixing the joint by adjusting the angle formed by the joint in a plurality of stages. On the other hand, a handrail characterized in that it is possible to make a finer work than the adjustment angle by the above-mentioned plurality of receiving portions by attaching a slider and providing the female screw on the slider. It is.

In the handrail according to the invention shown in Japanese Patent Application No. 2002-182716, a rough angle can be determined by providing a plurality of receiving portions for receiving the fixing member, and the angle shifts during the fastening operation of the fixing member. Is difficult to produce. As described above, in the invention shown in Japanese Patent Application No. 2002-182716, the rough angle can be surely selected, and the angle can be finely adjusted.
In other words, the handrail according to the invention described in Japanese Patent Application No. 2002-182716 eliminates the above-described deviation and makes it possible to more reliably select a desired angle.

On the other hand, the inventor of the present application has sought to obtain a handrail capable of reliably selecting an angle by eliminating such a shift with a simpler structure advantageous for manufacturing.
After earnest research, the present inventors have invented a handrail that can reliably select such an angle.

The first invention of the present application includes a gripping part, a support column that supports the gripping part, and an angle adjustment part, and the angle adjustment part adjusts the angle between the support and the installation surface or the gripping part, The angle adjustment unit is a joint including at least two members, a convex component having a convex curved surface having an arc shape in cross section and a concave surface forming member having a concave curved surface having an arc shape in cross section. In a handrail in which both constituent members are assembled together with a bolt or other fastener corresponding to the convex curved surface, one of the convex curved surface and the concave curved surface of the convex constituent member and the concave constituent member has a plurality along the circumferential direction. The groove is arranged, and at least one convex portion corresponding to the groove is provided on one of the convex curved surface and the concave curved surface, and the fastener includes a male screw member having a seating surface such as a bolt. And a female screw member with a seating surface such as a nut. The convex component is provided with a first penetrating portion penetrating from the convex curved surface to the opposite side of the convex curved surface, and the concave constituent member is a second penetrating portion penetrating from the concave curved surface to the opposite side of the concave curved surface. The first penetrating portion of the convex component member is a long hole extending in the circumferential direction along the curved surface of the concave component member, and the second penetrating portion of the concave component member is inserted through the male screw member. The male screw member is passed through the hole and the long hole, and the female screw member is fastened to the tip of the male screw member so that the seating surfaces of both screw members are opposite to the concave and convex curved surfaces. Both the constituent members are fixed by pressing the surface, and the concave constituent member is provided with a column, and the second penetrating portion is formed outside the column, and the shaft of the installation surface or the gripping unit and the male screw member is formed. Adjust the angle between the installation surface or the gripping part and the column by displacing the angle with the part. The left and right side surfaces are formed inside the convex surface constituting member, and the left and right side surfaces are in contact with the left and right side surfaces formed on the female screw member. Provided is a handrail characterized in that an attempt to rotate following the rotation of the shaft portion is prevented.

In the second invention of the present application, in the first invention of the present application, the portion that contacts the seat surface of the male screw member when the male screw member is fixed is located outside the support column. Provided is a handrail characterized in that the angle between the installation surface or the grip portion and the shaft portion of the male screw member is displaced to adjust the angle between the installation surface or the grip portion and the column. .

The handrails according to the first and second inventions of the present application adopting the above configuration tighten the fastening means by the convex portions corresponding to the grooves provided on the convex curved surface and the concave curved surface of the convex constituent member and the concave constituent member. In this case, both the constituent members can be reliably fixed to a desired angle without shifting the initially determined angle. In other words, even if slippery surfaces such as convex curved surface and concave curved surface are combined, once both curved surfaces are abutted, the convex portion is caught in the groove, so that the position does not change (temporarily fixed), and it is reliable The fastener can be tightened. Further, the fastener can be tightened outside the support column.

By implementing the first and second inventions of the present application, when tightening the fastener of the angle adjusting unit interposed between the support column and the installation surface or the holding unit in the handrail, the angle of the angle adjusting unit is being tightened. However, it can be kept stable and does not cause a deviation in the initially determined angle.
Further, by implementing the second invention of the present application, when tightening the fastener, the labor of inserting and tightening a tightening tool such as a wrench into the column is eliminated, and the work efficiency is remarkably improved.
As described above, according to the first and second inventions of the present application, regarding the handrail suitable for being provided on the slope, it is possible to reliably select the angle by eliminating the deviation at the time of attachment with respect to the desired angle in the angle adjusting portion. In addition, such a handrail was realized with a simple structure advantageous for manufacturing.

Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. 1 to 6 show an embodiment of a handrail according to the present invention.
FIG. 1 is a schematic side view of a handrail. FIG. 2 is a longitudinal sectional view of the handrail angle adjusting unit 3 of FIG. 1 showing a state corresponding to a horizontal installation surface. FIG. 3 is a longitudinal sectional view of the angle adjusting unit 3 showing a state corresponding to an installation surface with a slope. FIG. 4 is a perspective view mainly showing an upper part of the angle adjusting unit 3 in the state shown in FIG. FIG. 5 is an exploded perspective view of the angle adjusting unit 3. FIG. 6 is a perspective view mainly showing the bottom surface of the angle adjusting unit 3.
For convenience of explanation, in each figure, U indicates the upper side, S indicates the lower side, F indicates the front side, B indicates the rear side, R indicates the right side, and L indicates the left side.

As shown in FIG. 1, this handrail is provided in accordance with an installation surface provided with a slope, and includes a gripping portion 1, support columns 2... 2 that support the gripping portion 1, and angle adjustment portions 3. Is provided.
The configuration of each part will be described in the following order.

The grip portion 1 is a rod-like body that can be gripped by a person walking on the slope. In this embodiment, it is formed of a metal pipe.
Each of the columns 2... 2 supports the grip portion 1. In this embodiment, the columns 2... 2 are erected on the floor.

The angle adjusting unit 3 enables the support column 2 to be arranged vertically regardless of the slope of the slope. In this embodiment, the angle adjusting unit 3 adjusts the angle between the support column 2 and the installation surface g, and is provided at the lower end of each support column 3. That is, the angle adjusting unit 3 is interposed between the support column 3 and the floor (installation surface g).
As shown in FIGS. 2 to 5, the angle adjusting unit 3 includes a first component member 31 and a second component member 32 formed separately from the first component member 31, and the two component members 31, 32. Are assembled and fixed by the fastener 4.

The first component member 31 includes a base body 33 corresponding to the installation surface g and a male part 35 provided on the upper surface of the base body 33. The upper surface of the male part 35 is a convex curved surface 35a having an arc shape in a longitudinal sectional view. 30 in FIG. 4 to FIG. 6 indicate mounting holes in which fixing tools such as screws and bolts for fixing the base 33 to the installation surface g are mounted.
As shown in FIG. 6, the male portion 35 of the first component member 31 is a raised portion having a hollow inside and opens to the bottom surface side of the base 33. The upper surface (convex curved surface 35a) of the male part 35 is provided with a first penetration part 39 penetrating therethrough. That is, the male portion 35 is provided with a first through portion 39 that penetrates from the convex curved surface 35a to the opposite side of the convex curved surface 35a.

The second component member 32 includes a receiving member 34 that houses the lower end portion of the support column 2, and a female portion 36 that is provided below the receiving member 34. The receiving member 34 is a cylindrical body that can receive the lower end portion of the column 2 therein, and the female portion 36 is a protruding piece that protrudes forward F side from the lower end of the receiving member 34 that is the cylindrical body. It is. In other words, the female portion 36 is located outside the support 2 accommodated in the receiving member 34.
The receiving member 34 includes a fixing portion 5 that fixes the accommodated support column 2. As shown in FIGS. 4 and 5, the fixing portion 5 is provided on both sides of the slit 50 formed along the axial direction of the receiving member 34 from the opening end above the cylindrical receiving member 34. Projecting portions 51 and 51 and a tightening member 52 such as a bolt and a nut. Both projecting portions 51 and 51 are provided with through holes, and a fastening member 52 is passed through the through holes. Then, by tightening the tightening member 52, the width between the projecting portions 51, 51, that is, the width of the slit 50 is narrowed, and the support 2 in the receiving member 34 is tightened. In this way, the fixing portion 5 can fix the support column 2 to the receiving member 34.
In this embodiment, a left through hole 61 and a right through hole 62 are provided on the left and right side surfaces of the cylindrical receiving member 34, respectively. Further, a rear through hole 63 is provided in the upper part of the back surface of the receiving member 34. As described above, in the state where the lower end portion of the support column 2 is accommodated in the receiving member 34, the support column 2 also penetrates inward and outward at positions corresponding to the left through hole 61, the right through hole 62, and the rear through hole 63. A through hole is provided. A fixing means (not shown) such as a blind rivet or a tapping screw is attached to each of the through holes 61, 62, 63 of the receiving member 34 and the corresponding through holes of the column 2, thereby receiving the receiving member 34. The member 34 and the column 2 can be fixed more reliably.
The lower surface of the female portion 36 is a concave curved surface 36a having an arc shape in a longitudinal section.
On the upper surface 36b of the female portion 36 of the second component member 32, a second through portion 38 penetrating the lower surface (concave surface 36a) of the female portion 36 is provided. The 2nd penetration part 38 is provided with shelf part 38a. The inner diameter of the second through portion 38 on the upper surface 36b side with the shelf 38a is larger than the inner diameter on the opposite side (back side) with the shelf 38a interposed.

  On the convex curved surface 35a and the concave curved surface 36a of the male part 35 and the female part 36, a plurality of ridges extending in a direction intersecting the circumferential direction r (FIG. 2) of the circular arcs represented by the curved surfaces 35a and 36a, respectively. m ... m is formed. Each of the ridges m... M constitutes a convex portion, and a groove n is formed between adjacent ridges m and the ridge m.

The fastener 4 includes a male screw member 41 and a female screw member 42 that is formed separately from the male screw member 41 and can be screwed into the male screw member 41.
The male screw member 41 includes a shaft portion 43 provided with a male screw on the peripheral surface, and a head portion 45 provided at an end portion of the shaft portion 43 and including a seat surface 47. The female screw member 42 is a substantially rectangular parallelepiped member that can be accommodated in the hollow interior of the male portion 35, and includes a through hole 44 that vertically penetrates the female screw member 42. On the inner peripheral surface of the through hole 44, a female screw that is screwed into the shaft portion 43 is formed. The left and right side surfaces 46, 46 of the female screw member 42 face the left and right side surfaces 35 c, 35 c inside the male portion 35.

The second through portion 38 is a hole through which the male screw member 41 can be inserted. The first penetrating portion 39 is a long hole extending in the circumferential direction r of the curved surface along the curved surface (convex curved surface 35 a) of the male portion 35 of the first component member 31. The male screw member 41 is passed through the second through portion 38 and the first through portion 39, the tip of the male screw member 41 is screwed into the through hole 44 of the female screw member 42, and the male screw member 41 is attached to the female screw member 42. By tightening, the seat surfaces 48 and 47 (FIG. 5) of both screw members are opposite surfaces of the concave and convex curved surfaces 35a and 36a, that is, inside the shelf 38a and the male portion 35 (of the convex curved surface portion 35a). Hold the back side. In this way, the second component member 32 can be fixed to the first component member 31.
The above tightening can be performed by turning the head of the male screw member 41 with a tightening tool. When tightening, the female screw member 42 hits the left and right side surfaces 35c and 35c inside the male portion 35 facing each other. That is, the side surfaces 35 c and 35 c prevent the female screw member 42 from rotating following the rotation of the shaft portion 43 of the male screw member 41. For this reason, it is not necessary to hold down the female screw member 42 by hand during the tightening.
As shown in FIG. 6, it is preferable to provide a drain groove 7 on the bottom surface of the base 33. The drainage groove 7 communicates the inside of the male part 35 with the lower side of the installation surface g (inclined surface) of the base body 33, and allows rainwater collected in the internal space of the male part 35 to be discharged to the outside. To be discharged. In this embodiment, since the installation surface g is inclined downward toward the front F, the drain groove 7 is formed on the lower surface of the base 33 with the front F side of the base 33 in order to smoothly discharge rainwater. The male portion 35 is provided so as to communicate with the inside.

  When adjusting the angle of the column 2 with respect to the installation surface in accordance with the gradient of the installation surface g, the head 45 of the male screw member 41 is turned in the opposite direction with the tightening tool, and the male screw member 41 is changed into the female screw member. Loosen the assembly to 42. As described above, the angle between the two component members 31 and 32 can be adjusted as a joint in the state where the fasteners are loosened for the two component members 31 and 32. When changing the angle, the shaft portion 43 of the male screw member 41 can be displaced in the first through portion 39 which is a long hole, and the angle can be selected. However, in the state where the curved surfaces 35a and 36a are attached to each other, even when the fastener is not tightened, the other protrusions m ... m are caught in one groove n ... n, resulting in frictional resistance. The angle between the two constituent members 31 and 32 is not easily shifted. Therefore, by adopting such a configuration, the situation in which the angle after adjustment deviates from the desired angle during re-tightening has been reduced.

In this embodiment, the protrusions m are formed as protrusions protruding from the curved surface. However, if the protrusions protrude from the curved surface and can be caught in the groove n, shapes other than the protrusions are adopted. Even so, it can be implemented. That is, the convex portion is not limited to the above-mentioned convex stripes formed in a streak shape, but may be a hemispherical, conical, truncated cone-shaped, or spindle-shaped protruding portion, that is, a protrusion. Is possible.
Moreover, although the space between the adjacent ridges m and m is defined as the groove n, it is only necessary to be able to hook the above-mentioned ridges. It is also possible to form.

In the above embodiment, the first through portion 39 is a long hole. Conversely, the second through portion 38 may be a long hole extending along an arcuate concave curved surface. .
In the above embodiment, the first component 31 is a convex component, and the second component 32 is a concave component. Conversely, the first component 31 is a concave component, The second component 32 can be implemented as a convex component.
Furthermore, in the above-described embodiment, the angle adjusting unit 3 is provided between the support column and the installation surface g. However, the angle adjustment unit 3 may be provided between the support column 2 and the gripping unit 1. . Moreover, the installation surface g can be implemented as a wall surface in addition to the ground surface and the floor surface.

It is a substantially whole side view of the handrail which concerns on one embodiment of this invention. It is a longitudinal cross-sectional view which shows the state which can stand a support | pillar perpendicular | vertical with respect to the horizontal installation surface of the angle adjustment part 3 of the said handrail. It is a longitudinal cross-sectional view which shows the state which can stand a support | pillar perpendicularly | vertically with respect to the installation surface where the slope of the said handrail angle adjustment part 3 was attached. It is a perspective view of the angle adjustment part 3 shown in FIG. FIG. 3 is an exploded perspective view of the angle adjusting unit 3. FIG. 5 is a perspective view of the angle adjusting unit 3.

Explanation of symbols

1 Grasping part 2 Post 3 Angle adjustment part

Claims (2)

A gripping unit, a support column that supports the gripping unit, and an angle adjustment unit are provided, and an angle between the support column and the installation surface or the gripping unit is adjusted by the angle adjustment unit. A joint comprising at least two members, a convex component having an arcuate convex curve and a concave component having an arcuate concave curve in cross section, and the bolt corresponding to the concave curve and convex curve of both components In the handrail assembled with both components by fasteners such as
A plurality of grooves are arranged along the circumferential direction in one of the convex curved surface and the concave curved surface of the convex surface constituent member and the concave surface constituent member, and one of the convex curved surface and the concave curved surface corresponds to the groove. At least one protrusion is provided,
The fastener is composed of a male screw member having a seating surface such as a bolt and a female screw member having a seating surface such as a nut,
The convex component member includes a first penetrating portion penetrating from the convex curved surface to the opposite side of the convex curved surface, and the concave component member includes a second penetrating portion penetrating from the concave curved surface to the opposite side of the concave curved surface. Is,
The first penetrating portion of the convex component member is a long hole extending in the circumferential direction along the curved surface of the concave component member,
The second penetrating portion of the concave component member is a hole through which the male screw member can be inserted,
The male screw member is passed through the hole and the long hole, and the female screw member is fastened to the tip of the male screw member, so that the seating surfaces of both screw members press the surface opposite to the concave and convex curved surfaces, Is fixed,
The concave component member is provided with a column, and the second penetrating portion is formed outside the column.
The angle between the installation surface or the grip portion and the shaft portion of the male screw member is displaced, and the angle between the installation surface or the grip portion and the column is adjusted,
The left and right side surfaces are formed inside the convex surface constituting member, and the left and right side surfaces are in contact with the left and right side surfaces formed on the female screw member, so that the female screw member rotates following the rotation of the shaft portion of the male screw member. A handrail characterized by being prevented from trying. The portion that comes into contact with the seat surface of the male screw member when the male screw member is fixed is located outside the support column.
Claim wherein the above installation surface or the gripping portion, by displacing the angle of the shaft portion of the male screw member, that it has to perform the adjustment of the angle between the installation surface or the gripping portion and the post 1 The handrail described .

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