JP3793702B2 - Connector - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention belongs to a technical field related to a joint for connecting a handrail at a corner portion or an angle changing portion of a handrail attached to a corridor, a staircase, a toilet, an entrance, or the like, or an extension portion of a straight portion.
[0002]
[Prior art]
As a conventional coupling tool, for example, there is one disclosed in Utility Model No. 3070750. This connector is composed of one member 1 having a spherical convex portion 1a and the other member 2 having an opening holding portion 2a having a circular cross section for holding the convex portion 1a of the one member 1. In the position where the angle is changed, the end portion of the handrail d is fitted into the base portion of the one member 1 and the other member 2, and the convex portion 1a of the one member 1 and the opening holding portion 2a of the other member are fitted. d is a joint.
[0003]
Another conventional connector is disclosed in Japanese Utility Model No. 3040197. In this connecting tool, two joints made of the block piece 1 having the shaft hole 11 are opposed to each other, the bolt 21 is attached to the shaft hole 11 and hinged, and the cross member B connected to the end of the block piece 1 is connected. The angle formed can be adjusted.
[0004]
[Problems to be solved by the invention]
However, in the connector disclosed in the above-mentioned utility model No. 3070750, since the shape of one member 1 and the other member 2 is different, it is necessary to use two types of molds in manufacturing, resulting in an increase in cost. In other words, there is a problem that it is necessary to pay attention in order to attach the two types of members without making mistakes at the time of construction on site.
[0005]
Moreover, in the coupler disclosed in Utility Model No. 3040197, the bolt 21 is attached to the shaft hole 11 of the block piece 1, so there is a problem that the number of parts is large and the cost is increased.
[0006]
The present invention has been made in consideration of such problems, and it is an object of the present invention to provide a connector that can be manufactured at low cost and does not require labor for construction.
[0007]
[Means for Solving the Problems]
In order to solve the above-described problems, the connector according to the present invention employs the following means.
[0008]
That is, in claim 1, the cross section perpendicular to the central axis is formed in a semi-circle having a substantially semi-circle paired with the projecting portion that forms a semi-circle, a plane that is formed in the projecting portion and includes the central axis. A hole portion and an outer peripheral portion that forms an edge of the hole portion, the tip end portion of the protrusion portion is formed from a deformed hemispherical surface, and the central axis of the protrusion portion is curved in one direction and at the same time The outer peripheral portion is composed of two connecting members having the same shape that are inclined in the direction in which the central axis is curved, and one connecting member and the other connecting member slide each other on the planes overlapping each other. The connecting angle between one connecting member and the other connecting member can be changed, and the protruding portions of the one connecting member and the other connecting member are respectively inserted into the hole portions to the full, so that the hemispherical shape of the protruding portion The tip of the Is the concatenation as lifting.
[0009]
In this means, one connecting member having a projecting portion and a hole having a substantially semicircular cross section, a plane formed in the projecting portion, and an outer peripheral portion forming an edge of the hole overlaps the other connecting member with each other. At the same time, the protrusion of one connecting member is inserted into the other hole to the full and connected. With this configuration, the connecting angle of the connecting member can be changed by sliding the overlapping planes.
Further, since the central axis of the collision force portion linking giving articulation angle of the coupling member in a direction that is curved, insertion depth of the hole portion of the protrusion is less likely to decrease. Furthermore, the level difference at the joint of the connecting member is reduced.
[0010]
Delete [0011]
In this means, the outer peripheral portion that holds the protrusion of the other connecting member is provided to be inclined with respect to the central axis of the connecting member, and when the inclination changes the connecting angle of the connecting member, It is provided so that the insertion depth is unlikely to decrease. Therefore, even if the connection angle is changed, a decrease in insertion depth can be suppressed.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of a connector according to the present invention will be described with reference to the drawings.
[0013]
1 to 10 show an embodiment (1) of a connector according to the present invention.
[0014]
The connector 100 in this embodiment is a handrail connector attached to a corner portion of a staircase.
[0015]
The connection tool 100 is configured by combining two connection members 1 connected to the handrail T with screws 5.
[0016]
The connecting member 1 forms a protrusion 11 whose cross section in a direction perpendicular to the central axis C forms a semicircle, a hole 12 formed in a semicircle that forms a pair with the protrusion 11, and an edge of the hole 12. The outer peripheral part 13 and the cylindrical part 15 into which the handrail T is inserted are mainly configured.
[0017]
The protrusion 11 has a hemispherical tip 11b, a flat surface 11a including the central axis C, and a core 11c of the protrusion 11 having a substantially semicircular cross section. . Further, the central axis C of the protrusion 11 is curved in one direction.
[0018]
The hole portion 12 is surrounded by the cylindrical portion 15, the flat surface 11 a, and the outer peripheral portion 13, is a space having a substantially semicircular cross section, and is configured such that the protruding portion 11 of the connecting member 1 to be connected is inserted. Yes.
[0019]
The outer peripheral portion 13 forms the edge of the hole portion 12 with the same thickness as the thickness t of the cylindrical portion 15. Further, the outer peripheral portion 13 is provided to be inclined with respect to the central axis C. In particular, the outer portion 13b where the central axis C of the protrusion 11 is curved is inclined in the direction in which the central axis C is curved. This inclination is such that when the connecting member 1 is combined and the connecting angle is changed, the insertion depth at which the protrusion 11 of one connecting member 1 is inserted into the hole 12 of the other connecting member 1 is difficult to decrease. Is provided.
[0020]
The cylindrical portion 15 is a cylinder having a thickness t, and is provided with a hole 151 for the screw 5 for fixing the handrail T and an attachment hole 14 for the handrail T. Note that a flat surface 11 a projects from the mounting hole 14.
[0021]
The handrail T connected by the connecting member 1 is supported by the supporting member 2 near the connecting member 1, and the supporting member 2 is fixed to the wall surface with screws 21.
[0022]
As shown in FIG. 5, the connecting tool 100 is formed by overlapping the connecting member 1 having the same shape and the flat surface 11 a, and inserting the protruding portion 11 of one connecting member 1 into the hole 12 of the other connecting member 1. Connection is possible by holding the part 11 at the outer peripheral part 13.
[0023]
Then, by sliding the overlapping planes 11a, the connection angle S of the connection member 1 can be changed as shown in FIG.
[0024]
Next, the attachment method and operation of the connector 100 in this embodiment will be described.
[0025]
First, the handrail T is attached to the staircase or the like using the support member 2, and the connecting members 1 are attached to the angle changing portions (the K portion in FIG. 4, etc.) of the handrail T. At this time, since the mounting hole 14 of the cylindrical portion 15 has a predetermined length in the axial direction, by adjusting the insertion depth of the mounting hole 14 with respect to the handrail T, the flat surface 11a of each connecting member 1 is adjusted. Can be mounted in a stacked manner. Then, the protruding portion 11 of one connecting member 1 is fully inserted into the hole 12 of the other connecting member 1, the hemispherical tip portion 11 b is brought into contact with the outer peripheral portion 13, and the connecting member 1 is handrailed with the screw 5. Fixing to T completes the installation.
[0026]
The connecting tool 100 attached in this way can receive the force applied to the handrail T by the support member 2 with respect to the force acting outside the two support members 2 near the angle changing portion of the handrail T. it can. On the other hand, with respect to the force acting on the inside (between) of the two support members 2 in the vicinity of the angle changing portion of the handrail T with respect to the handrail T, the protrusion 11 inserted into the hole 12 of the connector 100 and the outer periphery The force can be received by fitting with the portion 13.
[0027]
That is, when the connection angle S shown in FIG. 5B is relatively small, the regions where the protrusions 11 are inserted into the holes 12 are indicated by the insertion regions E1 and E2 indicated by the hatched portions in FIG. And has a large insertion area. Accordingly, the one projecting portion 11 is held by the other outer peripheral portion 13 and the connecting member 1 is fixed to the handrail T by the screw 5, whereby a force acting in the vicinity of the angle changing portion of the handrail T can be received. .
[0028]
In addition, the area | region where the planes 11a of the connection member 1 overlap is the fitting area | region F shown in FIG.7 (b), and it can receive the force in this fitting area | region F with respect to the force of a substantially perpendicular direction to the plane 11a. it can.
[0029]
Further, when the connection angle S shown in FIG. 6B is 90 ° which is the maximum angle in this embodiment, the region where the protrusion 11 is inserted into the hole 12 is the shaded portion in FIG. The insertion areas E3 and E4 are smaller than the insertion areas E1 and E2 in FIG. 7A, but have relatively large insertion areas. Accordingly, the one projecting portion 11 is held by the other outer peripheral portion 13 and the connecting member 1 is fixed to the handrail T by the screw 5, whereby a force acting in the vicinity of the angle changing portion of the handrail T can be received. .
[0030]
In addition, the area | region where the planes 11a of the connection member 1 overlap is the fitting area | region F shown in FIG.8 (b), and it can receive the force in this area | region G with respect to the force of a substantially perpendicular direction to the plane 11a. .
[0031]
Further, in this connector 100, the distal end portion 11b of the projection 11 is not a complete hemispherical surface (a semicircle having a complete cross section), but the joint 3 of the connecting member 1 has a shape with a small step, as will be described later. It is assumed that the hemisphere is deformed (the cross section is almost a semicircle). As a result, as shown in FIGS. 9 and 10, when the connection angle changes (when the connection angle in FIG. 9A is relatively small to the maximum connection angle in FIG. 9B), the central axis thereof The intersection where C1 and C2 intersect will deviate from P1 to P2. The amount of deviation is the X dimension shown in FIG. 9 in the horizontal direction, and the Y dimension shown in FIG. 10 in the vertical direction.
[0032]
Therefore, the connector 100 is not fixed at the center position of the flat surface 11a as in the utility model No. 3040197 shown in the conventional example, so that the center position of the flat surface 11a is freely shifted according to the connection angle. It is configured. Thereby, the joint 3 of the connecting member 1 is formed in a shape in which one pipe is bent (a shape having a small step in the joint) from the inner corner portion R1 to the outer corner portion R2 of the portion where the two planes 11a overlap. In addition, the connection angle can be changed from the straight line state until the maximum connection angle of 90 ° is reached.
[0033]
That is, the joint 3 of the connecting member 1 extending from the inner corner portion R1 to the outer corner portion R2 where the two planes 11a overlap each other has a small step as shown in FIG. 11A when the connecting angle is relatively small. Only the joint 3 is formed, and even when the connection angle is the maximum connection angle of 90 °, as shown in FIG. 11B, only the joint 3 having a small step is formed.
[0034]
The connecting function can be obtained in the same way even if the tip 11b of the protrusion 11 is a complete hemispherical surface (a semicircle having a complete cross-section). In this case, the joint 3 of the connecting member 1 is slightly compared with the above step. It just becomes a large shape.
[0035]
According to the connector 100 of this embodiment (1), the protrusion 11 and the hole 12 having a substantially semicircular cross section, the flat surface 11 a formed in the protrusion 11, and the outer peripheral part 13 forming the edge of the hole 12. One connecting member 1 provided with the other connecting member 1 overlaps the other connecting member 1 and the flat surface 11a, and the protruding portion 11 of the one connecting member 1 is inserted into the other hole portion 12 to be connected to slide the overlapping flat surface 11a. By doing so, the joint 3 of the connecting member 1 can be changed while maintaining the state where the joint 3 at the corner portion where the two planes 11a overlap each other has a small step.
[0036]
Moreover, according to the connector 100, since the same connection member 1 is sufficient, without using a different connection member like what is shown to utility model 3070750 gazette, one type | mold in manufacture is sufficient. Further, since the shape of the parts is simple, the structure of the mold is also simplified, the mold cost is reduced, and the manufacturing cost can be reduced.
[0037]
Moreover, according to the connector 100, since it is not necessary to fix the connection members 1 with a volt | bolt etc. like the prior art example, in addition to low product cost, the effort of the construction | work which fixes a volt | bolt etc. is saved. The construction cost can be reduced.
[0038]
FIGS. 11-13 shows Embodiment (2) of the coupling tool based on this invention.
[0039]
The connecting tool 200 in this embodiment is obtained by eliminating the bending of the central axis C of the connecting member 4 with respect to the connecting tool 100 of the embodiment (1). Other configurations are the same as those of the connector 100 of the embodiment (1).
[0040]
As shown in FIGS. 13 (a) and 13 (b), the insertion area secured by the connecting tool 200 is an insertion area indicated by E5 and E6 by straight coupling, and when the connection angle is 90 °, the insertion area indicated by E5 and E6. As described in the embodiment (1), it has a function for connection.
[0041]
According to this connecting tool 200, although the level difference 3 of the joint of the overlapped portion is relatively large, the effect similar to that of the embodiment (1) can be obtained, and the structure becomes simpler. Can be further reduced.
[0042]
14-16 shows embodiment (3) of the coupling tool based on this invention.
[0043]
The connecting device 300 in this embodiment is obtained by eliminating the inclination of the outer peripheral portion 13 of the connecting member 6 with respect to the connecting device 200 of the embodiment (2). Other configurations are the same as those of the connector 100 of the embodiment (1).
[0044]
As shown in FIGS. 16 (a) and 16 (b), the insertion area secured by the coupling tool 300 is an insertion area indicated by E7 and E8 by straight coupling, and when the connection angle is 45 °, the insertion area indicated by E9 and E10. As described in the embodiment (1), it has a function for connection up to about 45 °.
[0045]
According to this connection tool 300, although the level difference 3 of the joint part of the overlapped portion is large and the connectable angle is narrowed, the effect similar to that of the embodiment (1) can be obtained, and the structure becomes simpler. Therefore, it is effective depending on the place of use (a place where the connection angle is small and the step 3 of the overlapped portion is not concerned), and the manufacturing cost can be further reduced.
[0046]
【The invention's effect】
As described above, the connecting device according to the present invention includes a protrusion and a hole having a substantially semicircular cross section, a flat surface formed in the protrusion, and one connection member including an outer peripheral part forming an edge of the hole. Since the other connecting member and the plane are overlapped, and the protruding portion of one connecting member is inserted into the other hole and connected, the overlapping plane a is slid, so the corner portion where the two planes overlap The connection angle S of the connecting member can be changed while maintaining a state where the joint is small in level difference.
[0047]
Moreover, since the same connection member 1 is sufficient, without using a different connection member like a prior art example, one type | mold is sufficient for manufacture. Further, since the shape of the parts is simple, the structure of the mold is also simplified, the mold cost is reduced, and the manufacturing cost can be reduced.
[0048]
Moreover, since it is not necessary to fix the connecting members 1 with bolts, etc., in addition to low product cost, the work of fixing such bolts can be saved (workability is good) and the construction cost can be reduced. There is an effect of becoming.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an embodiment (1) of a connector according to the present invention.
FIGS. 2A and 2B are a front sectional view and a plan sectional view of main parts of an embodiment (1) of a connector according to the present invention. FIGS.
FIGS. 3A and 3B are a front view and a plan view of main parts of an embodiment (1) of a connector according to the present invention. FIGS.
FIG. 4 is a perspective view showing an attachment state of the embodiment (1) of the connector according to the present invention.
FIG. 5 is a front view and a plan sectional view showing an embodiment (1) of a connector according to the present invention.
FIG. 6 is a front view showing an embodiment (1) of a connector according to the present invention. (A) and (b) have shown the case where an attachment state differs.
FIG. 7 is an explanatory view for explaining the operation of the embodiment (1) of the connector according to the present invention. (A) shows the insertion area, and (b) shows the overlapping area.
FIG. 8 is an explanatory view for explaining the operation of the embodiment (1) of the connector according to the present invention. (A) shows the insertion area, and (b) shows the overlapping area.
FIG. 9 is an explanatory view for explaining the operation of the embodiment (1) of the connector according to the present invention. (A) and (b) have shown the case where an attachment state differs.
FIG. 10 is an explanatory view for explaining the operation of the embodiment (1) of the connector according to the present invention. (A) and (b) have shown the case where an attachment state differs.
FIG. 11 is a perspective view showing an embodiment (2) of a connector according to the present invention.
FIG. 12 is a front view of main components of the embodiment (2) of the connector according to the present invention.
FIG. 13 is an explanatory diagram for explaining the operation of the embodiment (2) of the connector according to the present invention. (A) and (b) have shown the case where an attachment state differs.
FIG. 14 is a perspective view showing an embodiment (3) of a connector according to the present invention.
FIG. 15 is a front view of main components of the embodiment (3) of the connector according to the present invention.
FIG. 16 is an explanatory view for explaining the operation of the embodiment (3) of the connector according to the present invention. (A) and (b) have shown the case where an attachment state differs.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Connection member 2 Support member 3 Joint 4 Connection member 5 Screw 6 Connection member 11 Protrusion part 11a Flat surface 11b Tip part 11c Core part 12 Hole part 13 Outer part 14 Mounting hole 15 Cylindrical part 100 Connection tool 200 Connection tool 300 Center of connection tool C Axis E1 Insertion area E2 Insertion area F Matching area R1 Inner corner R2 Outer corner T Handrail

Claims (1)

A projecting portion having a substantially semicircular cross section perpendicular to the central axis, a plane formed on the projecting portion and including the central axis, a hole formed in a substantially semicircle paired with the projecting portion, and An outer periphery that forms an edge, and the tip of the protrusion is formed from a deformed hemisphere, and the center axis of the protrusion is curved in one direction and at the same time the outer periphery is the center axis. It is composed of two connecting members of the same shape that are inclined in the bending direction,
One connecting member and the other connecting member are overlapped with each other to slide the planes, and the connecting angle between one connecting member and the other connecting member can be changed. A coupling tool in which the protrusions of the member are inserted into the holes to the full, and the hemispherical tips of the protrusions are connected to the outer portions of the outer periphery.

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