JP2008303600A - Handrail - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enable a person to grip a handrail firmly with his/her hand without feeling a disorder of the basipodite (a region from the second joint from the third one) of his/her forefinger F when he/she grips the handrail with his/her hand. <P>SOLUTION: In this handrail, a planar portion 1 of a planar cross section is provided on a surface of an area which is brought into contact with the basipodite between the second and third joints J2 and J3 of the person's forefinger F when he/she grips the handrail from the upside by directing his/her palm downward. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a handrail used inside and outside a building such as a staircase, a corridor, a washroom, a toilet, a bathroom, and the like.

2. Description of the Related Art Conventionally, as handrails used indoors and outdoors in this type of building, those having a circular cross section are generally used. For example, as shown in Patent Document 1, a handrail having a surface with streak-like irregularities has been proposed as an example in consideration of ease of gripping. In this proposal, it becomes easy to grip by providing streak-like irregularities, and a handrail that is difficult to slip is obtained.
JP-A-2005-42345

  By the way, when a human grasps a handrail, due to the structure of the hand, the thumb and forefinger form a ring so that a handrail is inserted into the thumb and forefinger. For this reason, in a handrail having a circular cross section, the curved surface is hit by a portion (base) that is not straight and bent from the second joint to the third joint of the index finger. There is an unavoidable difficulty in feeling uncomfortable in the part between the joint and the third joint.

  The present invention has been made in view of such a point, and an object of the present invention is to devise the cross-sectional shape of the handrail so that when the person grasps it, the index finger base joint (from the second joint to the third joint). It is to be able to grasp the handrail firmly without feeling uncomfortable.

  In order to achieve the above object, according to the present invention, a portion of the surface of the handrail that touches the base of the index finger when a person grips it is made to have a planar shape corresponding to the substantially straight shape of the base of the index finger. I did it.

  Specifically, the handrail of the invention of claim 1 is a surface in a range in which the proximal joint between the second joint and the third joint of the index finger contacts when a person grasps the palm from the upper side with the palm down. Further, a flat portion having a planar cross section is provided.

  According to said structure, since the cross section of the range in which the base joint between the 2nd joint of the index finger from the 2nd joint of the index finger is in general contact with the surface of the handrail is a plane, the index finger is similar to a conventional handrail. The base joint from the second joint to the third joint does not feel uncomfortable when it hits the curved surface of the handrail, and the handrail can be firmly held.

  According to a second aspect of the present invention, the corners of both side edges in the width direction of the flat part are chamfered in a circular arc shape in cross section.

  In the present invention, the corners of both side edges in the width direction of the flat surface portion are chamfered, so that even when the corner portions hit the palm, there is no pain.

  As described above, according to the handrail of the first aspect of the present invention, when the person grasps from above with the palm down, the range of contact between the second joint and the third joint of the index finger is in contact. By providing a flat portion having a planar cross section on the surface, it is possible to firmly grasp the handrail without feeling uncomfortable.

  According to the second aspect of the present invention, the corners of the both side edges in the width direction of the flat part are chamfered in the shape of a circular arc in cross section, so that the hand does not hurt when the corners of both side edges hit the palm. You can grip the slide.

  Hereinafter, the best embodiment of the present invention will be described in detail with reference to the drawings. The following description of the preferred embodiments is merely exemplary in nature and is in no way intended to limit the invention, its application, or its application.

(Embodiment 1)
1 and 2 show a handrail A according to Embodiment 1 of the present invention. The handrail A is a rod-shaped member whose vertical height (vertical height in FIG. 1) is, for example, 35 mm, and as its material, laminated wood, plywood, wood fiberboard (IB, MDF, etc.), wood chip A board (particle board, strand board, OSB, etc.), a solid material, other wood materials, a synthetic resin such as plastic, a metal such as aluminum, or a composite material obtained by arbitrarily combining these materials can be used. However, in order to prevent feeling cold when touched by hand, at least the surface of the handrail A is preferably made of a material having a lower thermal conductivity than a metal or the like such as a wood material or a synthetic resin. Moreover, when using a wooden material, it is desirable to use the laminated material which does not generate | occur | produce a curvature especially when it is made long.

  Furthermore, if necessary, a decorative material such as a synthetic resin sheet may be attached to the surface of the handrail A, or colored coating, pattern printing, clear coating, or the like may be applied. Moreover, you may give the colored coating and clear coating to the surface after sticking of cosmetics.

  For the purpose of increasing the strength of the handrail A, a core material made of a metal such as iron or stainless steel or a high-strength resin such as ABS can be embedded in the handrail A.

  The surface of the handrail A can be dimpled or grooved as necessary for the purpose of preventing slipping.

  As a feature of the present invention, a plane portion 1 having a planar cross section is formed on the surface of the handrail A. The flat surface portion 1 has a shape in which a diagonal upper portion of the surface of a round bar A ′ (shown by a wavy line in FIG. 1) having a diameter of 35 mm, for example, having a diameter of 35 mm, is cut out in a planar shape over the entire length direction. As shown in FIG. 3, when the person grips (holds) the handrail A from the upper side with the hand H on the surface of the handrail A, the index finger F is The proximal joint between the second joint J2 and the third joint J3 is provided in a range where they are in general contact (J1 is the first joint of the index finger F in FIG. 3). Further, the corner portions 2 and 3 at both side edges in the width direction of the flat portion 1 are chamfered in a circular arc shape in cross section.

  The attachment structure of the handrail A is the same as the conventional structure, and is attached to a place where the handrail A inside or outside the building is required, such as a washroom, a toilet, and a bathroom, as well as stairs and corridors. For example, FIG. 3 illustrates an attachment structure for attaching the handrail A to the wall surface W by the handrail bracket 20, and the handrail bracket 20 is a known one and is a plate-like shape extending in the vertical direction attached to the wall surface W. A base 21, a handrail receiving portion 22 having an arcuate cross section that protrudes downward, one end (lower end) on the side surface of the base 21, and the other end (upper end) on the lower surface of the handrail receiving portion 22. Each has a L-shaped arm portion 23 that is fixed and connects the handrail receiving portion 22 to the base portion 21, and mounting member insertion holes 24, 24,... Are formed in the base portion 21 and the handrail receiving portion 22. ing. Then, an attachment member 26 such as a screw is inserted into the attachment member insertion hole 24 of the base portion 21 and fastened to the wall surface W, whereby the base portion 21 is attached and fixed to the wall surface W, while a handrail A is attached to the handrail receiving portion 22. Is mounted at the lower end so that the flat surface portion 1 is located on the wall surface W side, and a mounting member 26 such as a screw is inserted into the mounting member insertion hole 24 from below to be screwed into the handrail A. The handrail receiving portion 22 is fixedly attached to the handrail A.

  Moreover, the attachment height and angle of the handrail A can be suitably adjusted and attached according to a use condition and ease of use.

  Therefore, in this embodiment, as shown in FIG. 3, when the user grasps the handrail A attached to the wall surface W from the upper side, the index finger F of the user's hand H is formed on the surface of the handrail A. Since the flat section 1 having a planar cross section is formed in a range where the proximal joint between the second joint J2 and the third joint J3 substantially contacts, the second joint J2 of the index finger F to the third joint J3. Between the second joint J2 and the third joint J3 of the index finger F, like a conventional handrail having a circular cross section. Does not feel a sense of incongruity when hitting the curved surface of the handrail, and the handrail A can be firmly held by that amount.

  Further, on the surface of the handrail A, the corners 2 and 3 at both side edges in the width direction of the flat portion 1 are chamfered in a cross-section arc shape, so that the corners 2 and 3 hit the palm and become painful. Absent.

(Embodiment 2)
FIG. 4 shows a second embodiment of the present invention (in the following embodiments, the same parts as those in FIGS. 1 to 3 are denoted by the same reference numerals and detailed description thereof is omitted), and the handrail A is shown. The cross-sectional shape is changed.

  That is, in this embodiment, as in the first embodiment, the flat surface portion 1 is formed in a range in which the root joints of the index finger F on the surface of the handrail A from the second joint J2 to the third joint J3 are in general contact. Yes. In addition, a similar upper flat part 5 is formed adjacent to the flat part 1 at the upper end of the surface of the handrail A, and the part where the base of the thumb T is in contact with the round bar A 'having a circular cross section. On the other hand, a similar front side flat part 6 is formed adjacent to the upper side flat part 5, which bulges outward and has a bulged part cut out in a cross-sectional plane. And the corner | angular part 2,3,7,8 of the width direction both-sides edge of each of these plane parts 1,5,6 is a chamfering shape of cross-section arc shape. Other configurations are the same as those of the first embodiment.

  Therefore, this embodiment can achieve the same effects as those of the first embodiment. Further, since the near side flat portion 6 is also formed at the portion where the root of the thumb T comes into contact, the root of the thumb T becomes familiar with the near side flat portion 6 when the handrail A is gripped. The handrail A can be gripped without any further discomfort.

(Embodiment 3)
FIG. 5 shows Embodiment 3 of the present invention, in which the cross-sectional shape of the handrail A is further changed. In this embodiment, on the surface of the handrail A, when a person grips the handrail A from above with the hand H with the palm down, the part of the index finger F from the first joint J1 to the second joint J2 Are provided on the back side flat surface portion 10 in a range where they generally contact each other, and a recess 11 is provided in a portion where the thumb T contacts. Other configurations are the same as those of the first embodiment.

  Therefore, this embodiment can achieve the same effects as those of the first embodiment. Moreover, since the back side plane part 10 is formed in the range which the question part from the 1st joint J1 of the index finger F to the 2nd joint J2 substantially contacts, from the 1st joint J1 of the index finger F to the 2nd joint J2. Since the dent 11 is formed in the portion where the root of the thumb T contacts, the portion between the two is evenly along the flat surface portion 10. Get caught. Thus, the handrail A can be gripped more firmly.

(Embodiment 4)
FIG. 6 shows Embodiment 4 of the present invention, in which the cross-sectional shape of the handrail A is further changed. In this embodiment, the protrusion 12 is provided on the upper part of the portion where the thumb T comes into contact when a person grasps the handrail A from the upper side with the palm down, and the protrusion 12 is caught by the thumb T. As part. Moreover, the upper side plane part 5 is formed similarly to Embodiment 2. FIG. Other configurations are the same as those of the third embodiment. Therefore, this embodiment can provide the same effects as those of the third embodiment.

  The present invention can be grasped firmly without feeling a sense of incongruity at the base of the index finger when a person grasps it, so it is extremely useful and has high industrial applicability.

FIG. 1 is a cross-sectional view showing a handrail according to Embodiment 1 of the present invention. FIG. 2 is a perspective view showing the handrail of the first embodiment. FIG. 3 is a diagram illustrating a state in which the handrail is attached to the wall surface. FIG. 4 is a view corresponding to FIG. 1 illustrating a handrail according to the second embodiment of the present invention. FIG. 5 is a view corresponding to FIG. 1 and showing a handrail according to the third embodiment of the present invention. FIG. 6 is a view corresponding to FIG. 1 showing a handrail according to the fourth embodiment of the present invention.

Explanation of symbols

A handrail F index finger J2 2nd joint J3 3rd joint 1 plane part 2 corner part 3 corner part

Claims (2)

  A flat surface section having a planar cross section is provided on the surface of the area where the proximal joint between the second joint and the third joint of the index finger contacts when the person grasps the palm from below with the palm down. Characteristic handrail. The handrail of claim 1,
A handrail characterized in that corners of both side edges in the width direction of the flat portion are chamfered in a circular arc shape in cross section.

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