JP2003056527A - Connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a connector which is manufactured at low cost and which does not require much time for operation. SOLUTION: This connection device is so formed that one connecting member 1, comprising a projecting part 11 whose cross section perpendicular to a central axis C, is approximately semicircular, a plane 11a formed in a projecting part 11 and including the central axis C, a hole part 12 making a pair with the projection part 11 and formed into an approximately semicircular shape, and an outer circumferential part 13 forming the edge of the hole part 12, and the other member are stacked with each other in their planes 11a, the projection part 11 of one connecting member 1 is inserted into the hole part 12 of the other connecting member 1 and is retained by the outer circumferential part 13. The mutually stacked planes 11a are slid, to make the connection angle of the connecting member 1 variable.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a technical field relating to a knot for connecting handrails at a corner portion, an angle changing portion, and an extension portion of a straight portion of a handrail attached to a corridor, stairs, toilet, entrance, etc.

[0002]

2. Description of the Related Art As a conventional connector, for example, there is one disclosed in Japanese Utility Model No. 3070750.
This connector is 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, and at the angle changing place such as stairs, the one member 1 and the other member 2 are The end of the handrail d is fitted into the base, and the one member 1
The convex portion 1a and the opening holding portion 2a of the other member are fitted and the handrail d is jointed.

Another conventional connector is disclosed in Japanese Utility Model No. 3040197. In this connecting tool, two joints composed of the block piece 1 having the shaft hole 11 are opposed to each other, the bolts 21 are attached to the shaft hole 11 to perform hinge connection, and the horizontal member B connected to the end of the block piece 1 is connected. The angle to make is adjustable.

[0004]

However, in the connecting device 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, which leads to an increase in cost.
There is the problem that care must be taken to ensure that the types of components are installed correctly.

Further, in the connector disclosed in Japanese Utility Model No. 3040197, since the bolt 21 is mounted in the shaft hole 11 of the block piece 1, the number of parts is large and the cost is increased. There is.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a connector which can be manufactured at low cost and does not require much labor for construction.

[0007]

[Means for Solving the Problems] In order to solve the above-mentioned problems, the connector according to the present invention employs the following means.

That is, according to the first aspect of the present invention, a projection having a semicircle in a cross section perpendicular to the central axis, a plane formed on the projection including the central axis, and a semicircle forming a pair with the projection are provided. One connecting member composed of the formed hole portion and the outer peripheral portion forming the edge of the hole portion overlaps the other connecting member with the above-mentioned plane, and the protruding portion of one connecting member is connected to the other connecting member. It is inserted into the hole portion of the connecting member and held by the outer peripheral portion, and the connecting plane of the connecting member can be changed by sliding the overlapping flat surfaces.

According to this means, one connecting member having a protrusion and a hole having a substantially semicircular cross section, a flat surface formed on the protrusion, and an outer peripheral portion forming an edge of the hole is flat with the other connecting member. The parts are overlapped with each other, and the projections of one of the connecting members are inserted into the holes of the other to connect them. With this configuration, the connecting angle of the connecting member can be changed by sliding the overlapping planes.

According to a second aspect of the present invention, in the connecting tool according to the first aspect, the tip of the protrusion is formed in a hemispherical shape.

With this means, since the tip of the projection of the connecting member is formed in a hemispherical shape, it is held in close contact with the outer periphery of the hole to be inserted.

According to a third aspect of the present invention, in the connector according to the first or second aspect, the central axis of the protrusion is curved.

According to this means, the connection angle of the connecting member is given in the direction in which the central axis of the protrusion is curved so that the connecting member is connected, so that the insertion depth of the protrusion into the hole is less likely to decrease.

According to a fourth aspect of the present invention, in the connector according to any one of the first to third aspects, by changing the connecting angle of the connecting member, the protrusion of one connecting member is a hole of the other connecting member. The outer peripheral portion is provided so as to be inclined with respect to the central axis of the connecting member so that the insertion depth of the connecting member is not easily reduced.

According to this means, the outer peripheral portion for holding the protrusion of the other connecting member is provided so as to be inclined with respect to the central axis of the connecting portion, and when the inclination changes the connecting angle of the connecting member,
It is provided so that the insertion depth of the protrusion into the hole is less likely to decrease. Therefore, even if the connecting angle is changed, the insertion depth can be prevented from decreasing.

According to a fifth aspect of the present invention, a projection having a semicircular cross section in a direction perpendicular to the central axis, a plane formed on the projection including the central axis, and a semicircular shape paired with the projection. One connecting member composed of the formed hole portion and the outer peripheral portion forming the edge of the hole portion overlaps the other connecting member with the above-mentioned plane, and the protruding portion of one connecting member is connected to the other connecting member. It is inserted into the hole portion of the above and is held by the outer peripheral portion, and the connecting member is linearly connected.

According to this means, one connecting member having a protrusion and a hole having a substantially semicircular cross section, a flat surface formed on the protrusion, and an outer peripheral portion forming the edge of the hole is flat with the other connecting member. The parts are overlapped with each other, and the projections of one of the connecting members are inserted into the holes of the other to connect them. With this configuration, the connecting members are linearly connected.

[0018]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of a connector according to the present invention will be described with reference to the drawings.

1 to 10 show an embodiment (1) of a connector according to the present invention.

The connecting device 100 in this embodiment is
It is a handrail connector attached to the corner of the stairs.

The connecting member 100 is constructed by combining two connecting members 1 connected to the handrail T with screws 5.

The connecting member 1 has a protrusion 11 whose cross section in a direction perpendicular to the central axis C is substantially semicircular, a hole 12 formed in a substantially semicircle that makes a pair with the protrusion 11, and a hole 12. It is mainly composed of an outer peripheral portion 13 forming an edge and a cylindrical portion 15 into which the handrail T is inserted.

The protrusion 11 has a tip 11b formed in a hemispherical shape, has a flat surface 11a including the central axis C, and the core 11c of the protrusion 11 having a substantially semicircular cross section is hollow. Has become. Further, the central axis C of the protrusion 11 is curved in one direction.

The hole 12 has a cylindrical portion 15 and a flat surface 11a.
Is a space having a substantially semi-circular cross section and surrounded by the outer peripheral portion 13 and the projection 11 of the connecting member 1 to be connected is inserted.

The outer peripheral portion 13 forms the edge of the hole 12 with the same thickness as the wall thickness t of the cylindrical portion 15. In addition, the outer peripheral portion 13
Are inclined with respect to the central axis C. In particular,
In the outer portion 13b where the central axis C of the protrusion 11 is curved, it is inclined in the direction in which the central axis C is curved. This inclination is such that, when the connecting members 1 are combined and the connecting angle is changed, the projection 11 of one connecting member 1 is connected to the other connecting member 1
It is provided so that the insertion depth to be inserted into the hole 12 is difficult to decrease.

The cylindrical portion 15 is a cylinder having a wall thickness t, and is provided with a hole 151 for the screw 5 for fixing the handrail T and a mounting hole 14 for the handrail T. A flat surface 11a projects from the mounting hole 14.

The handrail T connected by the connecting member 1 is
It is supported by a supporting member 2 near the connecting member 1, and the supporting member 2 is fixed to the wall surface with screws 21.

As shown in FIG. 5, the connecting member 100 has the connecting member 1 of the same shape and the flat surface 11a overlapped with each other, and the projection 11 of one connecting member 1 is inserted into the hole 12 of the other connecting member 1. The projection 11 is held by the outer peripheral portion 13 so that they can be connected.

By sliding the overlapping flat surfaces 11a, the connecting angle S of the connecting member 1 can be changed as shown in FIG.

Next, the connector 10 in this embodiment.
The mounting method and operation of 0 will be described.

First, the handrail T is attached to the stairs or the like by using the support member 2, and the angle changing portion of the handrail T (K portion in FIG. 4 or the like).
Attach the connecting members 1 to each of them. At that 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 on top of each other. Then, the protrusion 11 of the one connecting member 1 is fully inserted into the hole 12 of the other connecting member 1 to bring the hemispherical tip portion 11b into contact with the outer peripheral portion 13, and the screw 5
The attachment is completed by fixing the connecting member 1 to the handrail T.

The connecting device 100 attached in this way is
With respect to the handrail T, the force acting on the outside of the two support members 2 near the angle changing portion of the handrail T can be received by the support member 2. On the other hand, for the handrail T,
For the force acting on the inner side (between) of the two support members 2 in the vicinity of the angle changing portion of the handrail T, the hole portion 1 of the connector 100 is used.
The force can be received by the fitting of the protrusion 11 and the outer peripheral portion 13 inserted in the second member.

That is, the connection angle S shown in FIG.
Is relatively small, the areas where the protrusions 11 are inserted into the holes 12 are the insertion areas E1 and E shown by the shaded areas in FIG.
2 and has a large insertion area. Therefore, since one protrusion 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, it is possible to receive a force acting in the vicinity of the angle changing portion of the handrail T. .

The area where the flat surfaces 11a of the connecting member 1 overlap each other is a matching area F shown in FIG. 7B.
With respect to the force in the direction substantially perpendicular to the plane 11a, the force can be received in the fitting region F.

Further, when the connecting angle S shown in FIG. 6B is 90 ° which is the maximum angle in this embodiment, the protrusion 11
The regions into which the holes are inserted are the insertion regions E3 and E4 shown by the shaded portions in FIG. 8A, which are smaller than the insertion regions E1 and E2 in FIG. 7A, but are relatively large. have. Therefore, since one protrusion 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, it is possible to receive a force acting in the vicinity of the angle changing portion of the handrail T. .

The area where the flat surfaces 11a of the connecting member 1 overlap each other becomes a mating area F shown in FIG. 8B.
For a force almost perpendicular to the plane 11a, this region G
You can receive that power at.

Further, in this connecting tool 100, the tip end portion 11b of the protrusion 11 is not a perfect hemispherical surface (completely semicircular in cross section), but the joint 3 of the connecting member 1 has a small step as described later. The hemispherical surface is deformed so that 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 line The intersection point where C1 and C2 intersect is shifted from P1 to P2. The shift amount is the X dimension shown in FIG. 9 in the horizontal direction, and is the vertical dimension in FIG.
Is the Y dimension.

Therefore, the connector 100 has a flat surface 1 as in the utility model No. 3040197 disclosed in the conventional example.
The center position of 1a is not fixed, and the center position of the plane 11a is freely displaced according to the connection angle. As a result, the joint 3 of the connecting member 1 is formed in a shape in which almost one pipe is bent (a shape with a small step in the joint) from the inner corner R1 to the outer corner R2 where the two flat surfaces 11a overlap. In addition, the connection angle can be changed from the straight state to the maximum connection angle of 90 °.

That is, the joint 3 of the connecting member 1 extending from the inner corner R1 to the outer corner R2 of the portion where the two flat surfaces 11a overlap each other, as shown in FIG. Only the joint 3 having a small step is formed, and even when the connecting angle is the maximum connecting angle of 90 °, the joint 3 having a small step is only formed as shown in FIG. 11B.

The connecting function can be obtained in the same manner even if the tip portion 11b of the protrusion 11 is formed as a complete hemispherical surface (the cross section is a complete semicircle). In that case, the joint 3 of the connecting member 1 has the above step. It is only slightly larger in size than the comparison.

According to the connector 100 of this embodiment (1), the projection 11 and the hole 12 having a substantially semicircular cross section, the flat surface 11a formed on the projection 11 and the edge of the hole 12 are formed. One connecting member 1 provided with the outer peripheral portion 13 and the other connecting member 1 and the flat surfaces 11a are overlapped with each other.
The protrusion 11 is inserted into the other hole 12 to be connected, and the overlapping flat surfaces 11a are slid so that the joint 3 at the corner portion where the two flat surfaces 11a overlap each other maintains a small step, and the connecting member Connection angle S of 1
Can be changed.

Further, according to the connecting device 100, the same connecting member 1 can be used without using different connecting members as shown in Utility Model No. 3070750.
Only one mold is needed for manufacturing. Further, since the shape of the parts is simple, the structure of the mold is also simple, the mold cost is reduced, and the manufacturing cost can be reduced.

Further, according to the connector 100, since it is not necessary to fix the connecting members 1 to each other with bolts unlike the conventional example, the product cost is low, and the labor for fixing the bolts is saved. (Construction is good) and construction cost can be reduced.

11 to 13 show an embodiment (2) of the connector according to the present invention.

The connecting tool 200 in this embodiment is
The bending of the central axis C of the connecting member 4 is eliminated from the connecting device 100 of the embodiment (1). Other configurations are similar to those of the connector 100 of the embodiment (1).

As shown in FIGS. 13 (a) and 13 (b), the insertion areas secured by the connecting tool 200 are E5 and E6 when the connection angle is 90 ° and E5 and E6 when the connection angle is 90 °. The insertion area shown can be secured, and has a function for connection as described in the embodiment (1).

According to this connecting tool 200, although the step 3 at the joint of the overlapped portions is relatively large, the same effect as that of the embodiment (1) can be obtained, and the structure becomes simpler. The manufacturing cost can be further reduced.

14 to 16 show an embodiment (3) of the connector according to the present invention.

The connecting tool 300 in this embodiment is
The outer peripheral portion 13 of the connecting member 6 is not inclined relative to the connecting tool 200 of the embodiment (2). Other configurations are similar to those of the connector 100 of the embodiment (1).

As shown in FIGS. 16 (a) and 16 (b), the insertion areas secured by the connecting tool 300 are E9 and E10 when the connecting area is 45 ° and the insertion areas shown by E7 and E8 are straight. The insertion area shown can be secured and 4
Up to about 5 °, it has a function for connection as described in the embodiment (1).

According to this connecting tool 300, the step 3 at the joint of the overlapped portions is large and the connectable angle is narrow, but the effect similar to that of the embodiment (1) can be obtained, and the connection is simpler. Since it has a structure, it is effective depending on the place of use (where the connection angle is small and the step 3 at the joint of the overlapping parts is not a concern).
The manufacturing cost can be further reduced.

17 to 19 show an embodiment (4) of the connector according to the present invention.

The connecting tool 400 in this embodiment is
It is a connecting tool for connecting the handrail T at a place where a long straight portion is required.

The connecting tool 400 is constructed by combining two connecting members 7. The connecting member 7 forms a protrusion 71 having a substantially semicircular cross section in a direction perpendicular to the central axis C, a hole 72 formed in a substantially semicircle that makes a pair with the protrusion 71, and an edge of the hole 72. The outer peripheral portion 73 and the cylindrical portion 75 into which the handrail T is inserted are mainly configured.

The difference from the embodiment (3) will be shown below. The protrusion 71 has an outer diameter portion 711 smaller than the outer diameter of the cylindrical portion 75 and can be inserted into the hole portion 72. ,
The tip 71b of the protrusion 71 is flat. Also,
The hole 72 has a bottom surface 721 instead of a through hole.
1 is a screw hole 76 for fixing the connecting member 7 to the handrail T.
And a spot facing 76a.

In this connecting tool 300, the connecting member 7 is attached to the handrail T.
It is fitted into the mounting hole 74 of the cylindrical portion 75, the connecting member 7 is fixed to the handrail T with the countersunk screw 77, and the connecting member 7 is fixed to the other handrail in the same manner, and the projecting portions 71 are formed in the hole portions 7.
The connection is completed only by inserting it in 2. This connector 300
Since the supporting member 2 as shown in FIG. 4 is attached in the vicinity of, the connecting member 7 is not likely to come off.

According to this connecting tool 300, when connecting handrails on a straight line, the same connecting member 1 can be used without using different connecting members, so that only one mold is required for manufacturing. Further, since the shape of the parts is simple, the structure of the mold is also simple, the mold cost is reduced, and the manufacturing cost can be reduced. Further, unlike the conventional example, since it is not necessary to fix the connecting members 1 to each other with bolts or the like, the product cost is low, and the work of fixing the bolts or the like is saved (the workability is good), and the construction cost is low. Reduction is possible.

Further, according to the connecting tool 300, even if the handrail T which requires a long straight line portion, the handrail T having a standard length can be connected without using a handrail having a custom-made length. The construction cost can be reduced.

[0059]

As described above, the connector according to the present invention includes the protrusion and the hole having a substantially semicircular cross section, the flat surface formed on the protrusion, and the outer peripheral portion forming the edge of the hole. Since one coupling member and the other coupling member are superposed on each other and the projections of the one coupling member are inserted into the other holes, the overlapping planes a are slid.
It is possible to change the connection angle S of the connection member while maintaining a state in which the joint between the corners where the two planes overlap each other has a small step.

Further, unlike the conventional example, the same connecting member 1 may be used without using different connecting members, so that only one mold is required for manufacturing. Further, since the shape of the parts is simple, the structure of the mold is also simple, the mold cost is reduced, and the manufacturing cost can be reduced.

Further, since it is not necessary to fix the connecting members 1 to each other with a bolt or the like, the product cost is low, and the work of fixing such a bolt is saved (the workability is good), and the construction cost is low. The effect is that it can be reduced.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment (1) of a connector according to the present invention.

FIG. 2 is a front cross-sectional view and a plan cross-sectional view of the main parts of the embodiment (1) of the connector according to the present invention.

3A and 3B are a front view and a plan view of the main parts of the embodiment (1) of the connector according to the present invention.

FIG. 4 is a perspective view showing an attached 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 the connector according to the present invention. (A) and (b) have shown the case where an attachment state differs.

FIG. 7 is an explanatory view explaining an action of the embodiment (1) of the connector according to the present invention. (A) shows the insertion area,
(B) shows the overlapping area.

FIG. 8 is an explanatory view explaining an action of the embodiment (1) of the connector according to the present invention. (A) shows the insertion area,
(B) shows the overlapping area.

FIG. 9 is an explanatory view explaining an action 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 explaining an action 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 the connector according to the present invention.

FIG. 12 is a front view of the main parts of the embodiment (2) of the connector according to the present invention.

FIG. 13 is an explanatory view explaining an action 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 the connector according to the present invention.

FIG. 15 is a front view of the main parts of the embodiment (3) of the coupling tool according to the present invention.

FIG. 16 is an explanatory view explaining the action of the embodiment (3) of the connector according to the present invention. (A) and (b) have shown the case where an attachment state differs.

FIG. 17 is a perspective view showing an embodiment (4) of the connector according to the present invention.

FIG. 18 is a front view, a left side view, and a right side view of main parts of the embodiment (4) of the coupling tool according to the present invention.

FIG. 19 is a front view showing an embodiment (4) of the connector according to the present invention. (A) is a state before connection, (b) is a front sectional view, and (c) is a view in a connected state.

[Explanation of symbols]

1 connecting member 2 Support members Three seams 4 connecting members 5 screws 6 connecting members 7 Connection member 11 protrusion 11a plane 11b tip 11c core 12 holes 13 Outer periphery 14 mounting holes 15 Cylindrical part 100 connector 200 connector 300 connector 400 connector C central axis E1 insertion area E2 insertion area F matching area R1 inside corner R2 outer corner T handrail

Claims (5)

[Claims] 1. A protrusion having a semicircle in a cross section perpendicular to the central axis, a plane formed on the protrusion and including the central axis, and a hole formed in a substantially semicircle forming a pair with the protrusion. And one outer peripheral portion forming the edge of the hole, the one connecting member is superposed on the other connecting member, and the projection of one connecting member is inserted into the hole of the other connecting member. Then, a connecting tool that is held by the outer peripheral portion and is capable of changing the connecting angle of the connecting member by sliding the overlapping flat surfaces. 2. The connector according to claim 1, wherein a tip of the protrusion is formed in a hemispherical shape. 3. The connector according to claim 1 or 2, wherein the central axis of the protrusion is curved. 4. The insert according to claim 1, wherein the protrusion of one of the connecting members is inserted into the hole of the other connecting member by changing the connecting angle of the connecting member. The connector according to claim 1, wherein the outer peripheral portion is provided so as to be inclined with respect to the central axis of the connecting member so that the depth is less likely to decrease. 5. A projection having a semicircular cross section in a direction perpendicular to the central axis, a plane formed on the projection including the central axis, and a hole formed in a semicircular shape that makes a pair with the projection. And one outer peripheral portion forming the edge of the hole, the one connecting member is superposed on the other connecting member, and the projection of one connecting member is inserted into the hole of the other connecting member. Then, a connecting tool formed by holding the outer peripheral portion and connecting the connecting members linearly.