JP3890031B2 - Joint members such as handrails - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a joint member that connects end portions of handrails and the like that are abutted against each other, and more particularly to a joint member that connects end portions of handrails and the like whose traveling direction changes in corner portions.
[0002]
[Prior art]
In general, in a portion where the traveling direction of the handrail or the like in the corner portion changes, an end portion of the handrail or the like having a different direction is connected by using a joint member capable of adjusting the angle.
As such a joint member, as shown in Japanese Patent Laid-Open No. 10-169142 (Patent Document 1), a plurality of angle adjusting bodies having curved axes are rotatably connected, and the angle adjusting body is rotated. In some cases, the crossing angle of the connecting members located on both sides is adjustable by adjusting the movement, and the connecting member is attached to an end portion of a handrail or the like.
[0003]
According to this prior art, the crossing angle of the connecting member can be adjusted steplessly by rotating the angle adjusting body according to the crossing angle of the trunk edges of handrails, fences, etc. It is possible to attach a connecting member. In addition, by making the cross-sectional shape of the angle adjusting body substantially coincide with the cross-sectional shape of a handrail or the like, it is possible to form a handrail with a continuous feeling despite the presence of a joint member.
However, if the angle adjustment body that is curved is rotated and adjusted, the direction of the axis changes, the center position of the axis of each angle adjustment body differs, and the shaft center of the joint member swells. The obtained appearance cannot be obtained, and furthermore, the crossing angle of the connecting members has to be adjusted by rotating the respective angle adjusters.
[0004]
JP-A-63-110373 (patent document 2), JP-A-9-137573 (patent document 3), JP-A-2-138296 (patent document 4), JP-A-5-7806 (patent document) 5) discloses a joint member in which a deformable core member is bent and connected in accordance with an intersection angle of a handrail end portion or a fence trunk end portion.
With such a joint member, the joint member is uniformly curved without undulation, so that the appearance is good and the continuity can be further enhanced. Further, the adjustment work of the crossing angle can be performed extremely easily because the operator only needs to bend the joint member in the direction in which the joint member is to be bent.
[0005]
In the case of a joint member in which the core member can be bent and deformed, the core member can be easily bent and deformed, and after construction, the joint member is required to have satisfactory strength as a joint member such as a handrail. In Japanese Patent Application No. 2002-34987 filed earlier by the present applicant, the core member is formed of a metal cylindrical body, and a notch is formed in a direction perpendicular to the axis, leaving a part of the core member. A joint member is disclosed in which a part of the member is left as a connecting portion and the connecting portion can be bent in a curved shape.
[0006]
When the joint member shown in Japanese Patent Application No. 2002-34987 is bent with the connecting portion positioned inside, the bending angle cannot be regulated, and the connecting portion is bent to the extent that the connecting portion is folded in half. Since there is a possibility of causing breakage, the connecting portion must be bent so as to be positioned on the outside. If the connecting portion is outside, the connecting portion is bent in a direction in which the interval between the cutout portions is reduced. Therefore, when the interval between the cutout portions becomes zero, the maximum bending angle is obtained, and the bending angle of the joint member can be regulated. Therefore, in order to prevent the operator from mistakenly bending the bending direction of the joint member during construction, it is necessary to take measures such as attaching a mark indicating the bending direction. Moreover, even if a mark is added, the possibility that the bending direction is mistaken due to human error cannot be solved.
Furthermore, since the connecting portion is formed by a part on one side of the core member, the cross-sectional area is small and the portion is easily broken, and it is difficult to withstand long-term use.
[0007]
[Patent Document 1]
JP-A-10-169142 [Patent Document 2]
Japanese Patent Laid-Open No. 63-110373 [Patent Document 3]
JP 9-137573 A [Patent Document 4]
Japanese Utility Model Publication No. 2-138296 [Patent Document 5]
Japanese Utility Model Publication No. 5-7806 [0008]
[Problems to be solved by the invention]
An object of the present invention is to provide a joint member having a core member in which a cutout portion is formed leaving a connection portion, as shown in Japanese Patent Application No. 2002-34987, and the bending direction of the joint member is not limited, and can withstand long-term use. An object of the present invention is to provide a joint member having sufficient strength.
[0009]
[Means for Solving the Problems]
As a result of intensive studies in view of such circumstances, the present inventors are joint members that connect end portions of handrails and the like that are faced together, and the joint member has a core member that can be bent and deformed, The core member has a circular cross-section connecting portion located in the center of the cross-section of the core member, continuous in the axial direction, an outer shape holding portion formed around the connecting portion, and alternately provided with notches and stopper portions, and an outer shape holding The connecting end portions formed at both ends of the portion are integrally formed of resin, the periphery of the outer shape holding portion is covered with a cover member, ring members are provided on both sides of the outer shape holding portion, and the core is centered around the connecting portion. The desired purpose is achieved by allowing the member to be bent and deformed, and by restricting the bending angle by bringing adjacent stopper portions into contact with each other.
[0010]
[Action]
According to the present invention, the core member of the joint member is located in the center of the cross section of the core member and has a circular cross-section connecting portion that is continuous in the axial direction, and is formed around the connecting portion, and the notch portion and the stopper portion are alternately provided. The outer shape holding portion and the connecting end portions formed at both ends of the outer shape holding portion are integrally formed of resin so that the core member can be bent and deformed around the connecting portion, and the adjacent stopper portions are contacted with each other. Since the bending angle is regulated by contacting, the bending angle is always limited by the contact between adjacent stoppers regardless of the direction of bending with the connecting part as the center. Since it can only be bent, it is possible to solve the problem that the connecting portion is bent indefinitely and breaks.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the invention will be described based on examples.
1 to 5 show a first reference example of the joint member of the present invention. In the figure, 1 represents a joint member, and the joint member 1 has a connection end 2 that can be connected to both ends of a handrail on both sides, and a connection end. 2 and a bendable main body 3 located between the two. The connecting end portion 2 can be inserted into an end opening of a handrail or the like formed by an extruded shape member or the like, is attached to the end surface of the main body portion 3 by a screw 21, and is provided so as to be rotatable around the screw 21. .
[0012]
Ring members 4 and 4 are provided on both side positions of the main body 3, and a core member 5 is disposed between the ring members 4 and 4. The core member 5 is formed of an aluminum extruded profile, and a screw hole 51 is integrally provided on the inner side. The ring members 4 and 4 on both sides are fixed to both sides of the core member 5 by screws screwed into the screw hole 51. Is done. The periphery of the core member 5 is covered with a cover member 6 formed of an olefin-based thermoplastic elastomer such as ethylene propylene rubber, so that the touch feeling is good. The end portion 61 of the cover member 6 is located in a space portion 7 formed between the ring member 4 and the outer periphery of the core member 5, and will be described later when the joint member 1 is bent and adjusted. The end portion 61 of the 6 moves in the space 7 to prevent the cover member 6 from wrinkling.
[0013]
A connecting portion 52 that is continuous in the axial direction is formed at the central position of the cross section of the core member 5, and an outer shape holding portion 53 that forms the outer edge of the main body portion 3 is formed at both sides of the connecting portion 52. The outer shape holding portion 53 is formed of notches 54 formed in a direction intersecting with the axis of the core member 5 and stoppers 55 formed alternately with the notches 54. The cover member 6 is supported by the outer shape holding portion 53 and has a cylindrical shape along the core member 5.
As described above, the core member 5 has the notch 54 formed in the direction intersecting the axis, and can be bent until the adjacent stoppers 55 come into contact with each other. Therefore, the notch portion 54 and the stopper portion 55 constituting the outer shape holding portion 53 are formed on both sides with the connecting portion 52 interposed therebetween, and can be bent in any direction until the stopper portions 55 come into contact with each other. When the portion 55 abuts, further bending is restricted, and the connecting portion 52 is not broken. And since the connection part 52 is formed in the cross-sectional center position of the core member 5, even if it bends in which direction, the largest bending angle of the coupling member 1 is substantially the same.
[0014]
The end 61 of the cover member 6 is located in the space 7 formed between the ring member 4 and the outer periphery of the core member 5. When the joint member 1 is bent as shown in FIG. 3, the length of the core member 5 on the side (lower side in FIG. 3) located in the bending direction is short and the core located on the opposite side (upper side in FIG. 3). The length of the member 5 is increased, and the length of the core member 5 is changed between the inner side and the outer side position. However, since the end portion 61 of the cover member 6 can move in the space portion 7, the cover member 6 is loosened. It is possible to prevent the occurrence of wrinkles due to etc.
In the figure, reference numeral 56 denotes engaging groove portions formed on both sides of the core member 5, and protrusions (not shown) formed inside the cover member 6 engage with the engaging groove portion 56, so that the circumferential direction of the core member 5 The rotation of the cover member 6 is prevented.
[0015]
Since the connecting portion 52 is formed at the central position of the cross section of the core member 5, it can be bent at the same angle in any direction around the connecting portion 52, but the connecting portion 52 is moved from the central position of the cross section to one side. By bending, the bending angle around the connecting portion 52 can be changed. That is, on the side where the connecting portion 52 is biased, the notch depth of the notch portion 54 becomes shallow, and the bending angle until the adjacent stopper portion 55 abuts is large. On the opposite side, the notch depth of the notch portion 54 is large. Since it becomes deep, the bending angle until the adjacent stopper part 55 contacts is reduced.
As described above, the bending angle can be adjusted depending on the position where the connecting portion 52 is formed. However, the bending angle can also be adjusted by the width of the notch portion 53, in other words, the interval between the adjacent stopper portions 54. When the width of the notch 53 is increased, the bending angle is increased. When the width of the notch 53 is decreased, the bending angle is decreased.
[0016]
FIG. 6 shows a second reference example of the present invention, and the same parts as those in the first reference example are denoted by the same reference numerals and the description thereof is omitted. The difference from the first reference example is the form of the connecting portion 52. The first reference example is a plate-like body, whereas the second reference example has a rod-like body having a circular cross section.
By using the connecting portion 52 of the rod-shaped body, the cutout portion 53 can be formed in the entire periphery of the connecting portion 52, and the core member 5 can be bent in any direction around the connecting portion 52 of the rod-shaped body. It can be set as the coupling member 1 in which a direction is not restrict | limited.
[0017]
Figure 7-8 is a real施例of the present invention, the same parts as in Reference Example will be omitted using the same reference numerals. In this embodiment , the core member 5 is formed of a resin portion 57 made of an olefin-based thermoplastic elastomer and an aluminum core material 56 built in the central portion of the resin portion 57. As shown in FIG. 9, a groove 561 by knurling is formed around the aluminum core material 56, and the adhesion between the aluminum core material 56 and the resin portion 57 formed integrally is enhanced.
Thus, by making the aluminum core material 56 and the resin part 57 into an integral structure, the interface between the aluminum core material 56 and the resin part 57 is peeled off, and the aluminum core material 56 becomes a resin during bending of the joint member 1. The shaft 57 does not rotate independently of the portion 57, and the joint member 1 can be easily bent and a uniform bend can be obtained.
[0018]
Furthermore, a connecting end 58 that can be connected to an end T such as a handrail is integrally formed at both ends of the core member 5, and the handrail end T is screwed to the connecting end 58. Ring members 4, 4 are screwed to the core member 5 using drill screws 8 at both side positions of the main body 3. A step portion 62 is formed at the end portion 61 of the cover member 6, a ring member is fitted on the step portion 62, and an overlapping portion of the step portion 62 and the ring member 4 is bonded. In the first reference example , the space portion 7 is formed between the end portion of the cover member 6 and the ring member 4 so that the end portion of the cover member 6 moves. However, as in this embodiment , the cover member By adhering the end of 6 and the ring member 4, the resin material forming the cover member 6 can be uniformly expanded and contracted, and the generation of wrinkles can be prevented. Since the ring member 4 is externally fitted to the step portion 62 of the cover member 6, as shown in FIG. A certain appearance can be exhibited.
[0019]
According to the present embodiment , the core member 5 can be bent in any direction as in the second reference example , and the joint member 1 is formed by the ring member 4, the core member 5, and the cover member 6, so Moreover, it can contribute to cost reduction.
Note that the core material 56 in this embodiment may be formed of a metal material other than aluminum. Further, the resin portion 57 may be made of a resin material other than the olefinic thermoplastic elastomer.
[0020]
Next, the case where the joint member 1 of a present Example is attached to the edge part of a handrail is demonstrated. First, the joint member 1 is bent according to the crossing angle of the handrail. At this time, the ring member 4 and the core member are not fixed by the drill screw 8, and the ring member 4 and the cover member 6 can rotate in the circumferential direction of the core member 5. The ring member 4 and the cover member 6 are integrated by an adhesive or the like. After the connecting end portion 58 of the core member 5 is inserted into the handrail end portion and the handrail and the connecting end portion 58 are screwed together, if wrinkles due to torsion or the like occur in the cover member 6, The ring member 4 and the cover member 6 are rotated in the direction to remove the twist of the cover member 6. Finally, the drill screw 8 is inserted from the screw insertion hole 41 of the ring member 4, the drill screw 8 is screwed into the core member 5 to fix the ring member 4, and the attachment of the joint member 1 is completed. Since the connecting end portion 58 of the core member 5 is formed of resin, the drill screw 8 can be easily screwed.
[0021]
In the above embodiment, the joint member 1 has been described for the case of connecting the ends of the handrail, not a safely be used as a coupling member for coupling the furring strip end of the fence.
[0022]
【The invention's effect】
According to the joint member of the present invention, the core member of the joint member is located in the center of the cross-section of the core member and has a circular cross-section connecting portion that is continuous in the axial direction, and the cut-out portion and the stopper portion are alternately formed around the connecting portion. The outer shape holding portion provided in the outer shape holding portion and the connecting end portions formed at both ends of the outer shape holding portion are integrally formed of resin , the core member can be bent and deformed around the connecting portion, and adjacent stopper portions can be Since the bending angle is regulated by abutting, the adjacent stopper part always comes into contact with any direction around the connecting part, and the bending angle of the connecting part can be limited by the stopper part. It is possible to prevent damage to the connecting part due to handling.
[Brief description of the drawings]
In FIG. 1 a first reference example of the front view [FIG 2] first reference example side view [FIG 3 is a front view illustrating a state in which bending of the first reference example 4] the core member of the first reference example (A) Front view, (B) Plan view, (C) Side view [FIG. 5] A cross-sectional view taken along line II in FIG. 4 (A). [FIG. 6] The core member in the second reference example of the joint member of the present invention. sectional view FIG. 7 is a cross-sectional view of a core member in the embodiment of the overall view [9] the present invention joint member in the embodiment of a longitudinal sectional view the present invention; FIG coupling member in the embodiment of the present invention the joint member Figure 10] Cross-sectional view of the core member in the embodiment of the joint member of the present invention [Explanation of symbols]
1 Joint member
4- ring member
5 core member
6 cover members
52 connecting part
53 Outline holder
54 Notch
55 Stopper part
58 connection end

Claims (1)

A joint member that connects ends of handrails and the like that are faced together, and the joint member has a core member that can be bent and deformed, and the core member has a cross-sectional circle that is located in the center of the cross section of the core member and that is continuous in the axial direction. A shape connecting portion, an outer shape holding portion formed around the connecting portion and provided alternately with notches and stopper portions, and connecting end portions formed at both ends of the outer shape holding portion are integrally formed of resin. The outer periphery holding portion is covered with a cover member, ring members are provided on both sides of the outer shape holding portion, the core member can be bent and deformed around the connecting portion, and adjacent stopper portions are brought into contact with each other. A joint member such as a handrail, wherein the bending angle is regulated.

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