JP2007051459A - Connector and handrail connecting method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a connector and a handrail connecting method using its connector, capable of largely shortening construction work time by easily connecting mutual handrails. <P>SOLUTION: This connector is formed by joining a connecting member and a movable member for connecting the handrail by a joining means so that an angle can be changed. The connecting member is composed of a pair of divided pieces mutually detachably joined by a fastening means. One divided piece has a receiving surface part slidingly contacting with the movable member in one end part, and the other divided piece has a receiving surface part slidingly contacting with the movable member in the other end part. The movable member has a sliding contact part opposed to the receiving surface part on one end side and a connecting part connecting the handrail on the other end side. The joining means mutually joins the divided pieces and the movable member so that the angle can be changed by opposing the receiving surface part and the sliding contact part. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a connection tool for connecting a handrail attached to a wall surface or the like of a building at an angle and a method for connecting the handrail using the connection tool.

  Handrails installed on walls such as stairs and corridors are required to be installed in a continuous line from the viewpoint of ensuring safety during walking and aesthetics. For this reason, a plurality of handrails having a predetermined length are added by a connecting tool and fixed to the wall surface by a wall surface mounting tool or the like.

  In recent years, there are many cases in which a staircase with a landing or a spiral staircase is adopted in a detached house of construction technology, and it is necessary to install a handrail along an L-shaped or arc-shaped wall surface. In such a case, as shown in Patent Document 1 below, a universal connector that can freely change the coupling angle between the handrails is used.

The universal connector includes a coupling member and a movable member for connecting a handrail to both ends thereof, and the movable member is configured to be coupled to the coupling member so as to be movable relative to the coupling member. Has been. When connecting a handrail using this universal connector, it is performed by the following construction method. For example, when connecting two handrails as a first handrail and a second handrail,
1) The tip of the first handrail is inserted into the insertion port of the one side movable member of the universal connector to connect the first handrail and the one side movable member.
2) The insertion port of the other side movable member is adjusted so as to face the axial direction of the second handrail.
3) The second handrail is slid in its axial direction and inserted into the insertion port, and the second handrail and the other side movable member are connected.
Is done by.
Japanese Patent Laid-Open No. 11-6267

  According to the construction method, when the second handrail is connected to the connection tool, since the connection tool is attached to the first handrail, the position at which the second handrail is inserted into the insertion port. It is necessary to slide the entire second handrail and insert it into the insertion slot.

  Also, if the handrail once installed is removed, due to problems such as warpage of the handrail itself and construction accuracy, the center axis of the connector does not match the center axis of the handrail, and the handrail is inserted again. May be difficult to insert into. Even in this case, it is necessary to repeat the sliding in the axial direction for the removed handrail T, and to perform construction by forcibly fitting the handrail into the insertion port.

  Thus, in the conventional connection tool, when connecting the handrail to the connection tool, the handrail side which is a long object is forced to move with respect to the insertion port. In addition, since it is necessary to fit in the insertion opening having an opening depth in the axial direction, the direction of moving the entire handrail is limited only to the axial direction when fitting, and the handrail connection construction work is very This is a cumbersome and time-consuming work.

  The present invention solves the above-described problems, and provides a connection tool that can easily connect handrails and can significantly reduce the construction work time, and a method for connecting handrails using the connection tool. The purpose is that.

  In order to solve the above-described problems, a connecting device according to the present invention is a connecting device in which a connecting member and a movable member for connecting a handrail to both ends of the connecting member are coupled to each other so that the angle can be changed by a coupling means. The connecting member is composed of a pair of split pieces that are detachably coupled to each other by fastening means, and one of the split pieces includes a receiving surface portion that is in sliding contact with the movable member at one end, and the other split portion. The piece includes a receiving surface portion that is in sliding contact with the movable member at the other end portion, and the movable member includes a sliding contact portion that faces the receiving surface portion on one end side, and a connection portion that connects a handrail to the other end side. The coupling means is characterized in that the receiving surface portion and the sliding contact portion face each other, and the divided piece and the movable member are coupled to each other so that the angle can be changed.

  According to the above connection tool, since the connecting member is composed of a pair of split pieces, and the movable member is coupled to one end of the split piece so that the angle can be changed, each of the connection tools includes the split piece and the movable member. It can divide | segment into two sets of parts (after-mentioned connection piece tool). Therefore, after attaching each of the two sets of parts to both handrails to be connected, the handrails can be connected by fastening the divided pieces.

  The split piece includes a half barrel-like or half-cylindrical fastened portion formed integrally with the receiving surface portion, and is fastened by a fastening means in a state where the fastened portions of both split pieces are combined. It is preferable to make it.

  By comprising in this way, the said division | segmentation pieces can be easily fastened with a volt | bolt etc.

  Further, the sliding contact portion of the movable member is a convex surface portion formed of a hemispherical convex surface, and the receiving surface portion of the divided piece is formed of a hemispherical concave surface into which the convex surface portion is fitted. It is preferable that it is a concave surface part.

  With such a configuration, the convex surface portion of the movable member and the concave surface portion of the divided piece are in a spherical contact state, so that the movable member and the divided piece can be rotationally displaced at any angle relatively.

  The coupling means includes a shaft member disposed on the receiving surface portion of the divided piece and a guide groove provided in a sliding contact portion of the movable member, and the shaft member is movably penetrated into the guide groove. When the shaft member is inserted and moved along the guide groove, it is preferable that the split piece and the movable member are configured to be capable of relative movement so that their central axes intersect.

  With this configuration, the shaft member is displaced along the guide groove, so that the angle between the split piece and the movable member can be changed relative to the guide groove direction.

  Further, in the coupling means, a pressing member attached to a tip end portion of the shaft member that penetrates the receiving surface portion of the divided piece and the sliding contact portion of the movable member abuts from the inner wall surface side of the sliding contact portion. It is preferable that it is constructed by caulking.

  By comprising in this way, the said movable member can change an angle with respect to a division | segmentation piece, maintaining the state with which the division | segmentation piece and the movable member were couple | bonded.

  Moreover, in order to solve the said subject, the connection method of the handrail concerning this invention is a method of connecting the 1st handrail and the 2nd handrail using the connection tool of the said invention, The divided pieces and the movable members are integrally coupled by the coupling means to form two sets of connection pieces, and one of the connection pieces is connected to the first handrail and the other connection After the piece is connected to the second handrail, the divided pieces are fastened together by the fastening means to connect the first and second handrails.

  According to the connection method, since the connection tool is once divided into connection piece tools and separately attached to the first handrail and the second handrail, the connection tool can be easily connected to the handrail. Also, since the handrails can be connected by simply arranging and fastening the split pieces so that they can be joined together, it is possible to move the handrail with the connecting piece attached as freely as possible and easily align it. it can. Therefore, the troublesome work in the conventional connection construction work becomes unnecessary, and the construction time can be shortened.

  According to the connecting tool and the handrail coupling method of the present invention, since the connecting tool can be divided into two sets of connecting pieces, the connecting piece is attached to the first and second handrails in advance, and then divided. The pieces can be fastened together to connect the first and second handrails. Therefore, the connection construction work between the handrails is simplified, and the construction work time can be shortened.

  Preferred embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a perspective view showing the whole connecting tool 1 of the present invention, FIG. 2 is a perspective view showing a state in which the connecting tool 1 is divided, and FIG. 3 is a cross-sectional view of a connecting piece 20 described later. is there.

  1 to 3 includes a connecting member 10 and a movable member 2 provided at both ends of the central axis α direction (see FIG. 3). The movable member 2 includes a handrail 3. Is connected.

  The connecting member 10 is made of plastic or the like and is formed in a substantially barrel shape centered on the direction of the central axis α. The connecting member 10 includes a pair of detachable split pieces 11a and 11b that are divided with a plane passing through the central axis α as a boundary (in the case where it is not necessary to identify both, the “split piece 11” is representative of each. And are fastened with bolts 4.

  Each of the divided pieces 11a and 11b includes a fastened portion 12 that is fastened integrally, and a receiving surface portion 15 that is integrally formed with the fastened portion 12 at one end of the central axis α.

  The fastened portion 12 is formed in a substantially half-barrel shape having a substantially constant thickness. At both ends of the central axis α direction, semicircular surfaces having a predetermined angle with respect to the central axis α are formed symmetrically with respect to an axis β perpendicular to the central axis α. Therefore, a long arc-shaped portion 16 and a short arc-shaped portion 17 extending in a direction substantially parallel to the central axis α are formed at the circumferential end of the fastened portion 12, and the long arc-shaped portion 16 and the short arc-shaped portion are formed. 17 is formed with a joining surface 13 on which the fastened portions 12 of the split pieces 11a and 11b are joined.

  In addition, an insertion hole 12a is provided at a substantially central portion of the fastened portion 12 so as to penetrate the fastened portion 12 in a direction perpendicular to the central axis α. And the thread groove 12b screwed with the said volt | bolt 4 is formed in the inner wall face of the said insertion hole 12a of the division | segmentation piece 11a. Therefore, when the bolt 4 inserted into the insertion hole 12a of the divided piece 11b is screwed into the screw groove 12b of the insertion hole 12a of the divided piece 11a, the divided piece 11a and the divided piece 11b are fastened. Yes. That is, a fastening means is configured by the fastened portion 12 and the bolt 4.

  A claw portion 14 is formed in the vicinity of the joint surface 13 of the fastened portion 12 so as to protrude from the inner surface side. That is, as shown in FIG. 2, the divided piece 11a is formed at four locations on the upper and lower sides, and the divided piece 11b is located at a position where it is inserted between the lower claw portions 14 of the divided piece 11a. A total of three portions are formed on the outer side of each of the upper claw portions 14 of the divided piece 11a. These claw portions 14 serve as positioning and guides when the divided pieces 11a and 11b are fastened, so that the claw portions 14 are slidably in contact with each other, and the assembly of the connector 1 is facilitated. belongs to.

  Further, the receiving surface portion 15 of the divided piece 11 is provided at one end of the fastened portion 12 in the direction of the central axis α. The receiving surface portion 15 faces the movable member 2, and as shown in FIG. 2, the divided piece 11a is provided with the receiving surface portion 15 at the end on the handrail 3a side, and the divided piece 11b. Although not shown in figure, the receiving surface part 15 is provided in the edge part by the side of the handrail 3b. As shown in FIG. 3, the concave surface portion 15 a of the receiving surface portion 15 faces the tip portion of the movable member 2.

  Therefore, the connection tool 1 is divided into two sets of connection pieces 20, 20 composed of the split piece 11 and the movable member 2 coupled to one end of the split piece 11.

  As shown in FIGS. 1 to 3, the movable member 2 is formed in a substantially cylindrical shape having a substantially constant thickness by die-casting a zinc alloy, and at one end thereof, the receiving surface portion 15 of the divided piece 11 and The sliding contact part 21 which faces is provided. In the present embodiment, a hemispherical convex surface portion 21a is formed on the sliding contact portion 21, while a hemispherical concave surface portion 15a is formed on the receiving surface portion 15, and the convex surface portion 21a and the concave surface portion 15a are formed. And slidably face each other along the spherical surface.

  A connecting portion 24 is formed at the other end of the movable member 2 where the sliding contact portion 21 is not provided. The connection portion 24 is composed of an insertion port 23 and a screw hole 25. In order to prevent the handrail 3 from being inserted into the insertion port 23 and the handrail from being inserted beyond a predetermined depth from the other end, a locking portion 23a having a stepped inner diameter is formed. . A screw hole 25 for inserting a screw is formed on the circumferential surface of the movable member 2 so that the handrail 3 inserted through the insertion hole 23 and the movable member 2 can be connected and fixed. ing.

  Further, the receiving surface portion 15 of the split piece 11 is provided with a shaft hole 15b having a circular cross section at the center thereof. The shaft hole 15b is formed to open toward the center of curvature of the concave surface portion 15a. The movable member 2 has a center axis α and a central axis γ of the movable member 2 in parallel with each other from a position substantially corresponding to the shaft hole 15b formed in the receiving surface portion 15 (center side position 5a). The guide groove 5 having the same width as the diameter of the shaft hole 15b is provided up to a position corresponding to the vicinity of the edge portion 15c of the concave surface portion 15a (terminal side position 5b).

  The shaft member 6 is formed of a round bar material such as steel and has a tip portion 6a and a head portion 6b. The head portion 6 b of the shaft member 6 abuts on the inner wall side of the receiving surface portion 15 of the split piece 11, and the tip portion 6 a passes through the shaft hole 15 b and the guide groove 5.

  Furthermore, the front end portion 6a of the shaft member 6 passes through the center of the press member 7 made of synthetic resin having a low friction coefficient, and one end surface of the press member 7 is held by a press washer 8 fixed to the front end portion 6a. 7b is held down. Thereby, the spherical contact state between the spherical surface portion 7a formed on the other end surface of the pressing member 7 and the inner wall surface 22 of the movable member 2 formed in a hemispherical shape is maintained.

  A sliding washer 9 made of a synthetic resin having a low friction coefficient is sandwiched between the receiving surface portion 15 of the split piece 11 and the movable member 2.

  According to such a configuration, the movable member 2 is sandwiched from both sides by the receiving surface portion 15 of the divided piece 11 and the presser member 7, and these are caulked by the presser washer 8 to prevent separation.

  The concave surface portion 15a of the split piece 11 and the convex surface portion 21a of the movable member 2 are formed in a hemispherical shape, and the joint surface between the inner wall surface 22 of the movable member 2 and the pressing member 7 is also formed in a hemispherical shape. Therefore, the movable member 2 can be bent with respect to the divided piece 11 while maintaining the spherical contact on the hemispherical surface. Further, since the shaft member 6 has a circular cross section, the movable member 2 can perform torsional rotation (twisting operation) with the shaft member 6 as the rotation center with the spherical contact maintained with respect to the divided piece 11. it can. In this specification, the contact state via the sliding washer 9 and the like is also included in the spherical contact state.

  Since the bending operation is accompanied by the movement of the shaft member 6 along the guide groove 5, the shaft member 6 is located at the center position 5a of the guide groove 5 and is located at the end position 5b. Between. In other words, the center side position 5a shown in FIG. 3 to the terminal side position 5b shown in FIG.

  As shown in FIG. 4, since the movable member 2 can change the angle by about 45 degrees in the direction of the short arc-shaped portion 17, the connection tool 1 can move the handrails 3 a and 3 b connected to the movable member 2 up to 90 degrees. It can be bent and connected to any angle within a range up to a certain extent. Thus, even if it is a case where it bends to the maximum bending angle, the two movable members 2 and 2 do not interfere.

  Therefore, when interlocked with the torsional operation, the movable member 2 can be directed in an arbitrary direction within a conical region having an apex angle of 90 degrees with the axial direction of the shaft member 6 as the center.

  Since a sliding washer 9 and a presser member 7 made of a synthetic resin with good sliding properties are used on the surfaces that slide in these bending and twisting operations, smooth sliding is possible.

  Here, the sliding washer 9 and the pressing member 7 are made of synthetic resin, but other materials having a low coefficient of friction may be used, or the sliding surface may be formed without using a member of such a material. You may comprise so that it can slide smoothly, such as processing sufficiently smoothly.

  In addition, here, the connecting member 10 is molded of plastic or the like, and the movable member 2 is formed by die casting of zinc alloy. However, the connecting member 10 has strength as a universal connector for connecting the handrail 3. If there are, for example, a synthetic resin, wood, metal, or the like can be arbitrarily selected depending on the required texture.

  Here, the other end surface of the pressing member 7 is a spherical surface portion 7a and is configured to make spherical contact with the inner wall surface 22 of the movable member 2 formed in a hemispherical shape. However, the other end surface of the pressing member 7 is not necessarily spherical. It is not necessary to form in the shape, and the structure which contact | abuts to the inner wall surface 22 in a point contact or a surface contact state may be sufficient.

  Moreover, although the to-be-fastened part 12 of the division | segmentation piece 11 becomes a half barrel shape in embodiment of illustration, a half cylinder shape may be sufficient.

  Next, a method for connecting handrails using the connection tool of the present invention will be described.

  As shown in FIG. 2, two sets of connecting pieces 20 in which the movable member 2 is fastened to the divided pieces 11 are prepared and attached to the handrails 3 to be coupled. That is, the handrail 3a is inserted into the insertion port 23 of the movable member 2 in one connection piece 20, and a screw is driven into the screw hole 25 to fix the movable member 2 and the handrail 3a. Similarly, the other connection piece 20 is attached to the handrail 3b (FIG. 2).

  Thereafter, the connecting pieces 20 and 20 are fitted so that the divided surfaces 11a and the divided surfaces 11b of the connecting pieces 20 and 20 coincide with each other. That is, the entire handrails 3a and 3b are moved to a position where the fastened portions 12 of the split pieces 11a and 11b attached to the handrails 3a and 3b face each other. Then, the entire handrails 3a and 3b are moved in the direction in which the fastened parts 12 are joined to each other until the joint surfaces 13 come into contact with each other.

  When the fastened parts 12 are joined together, they are guided to a predetermined position by the claw parts 14 provided on both fastened parts 12. And after fitting the division piece 11a and the division piece 11b, the volt | bolt 4 is inserted from the division piece 11b side, and the division piece 11a and the division piece 11b are fastened. In this way, the handrail 3a and the handrail 3b are connected.

  Thus, since the connecting member 1 of the present invention can divide the connecting member 10 to form two sets of connecting pieces 20, the handrails 3 can be connected to each other with the connecting pieces 20 attached to the handrail 3 in advance. Can be linked. Therefore, it is not necessary to perform the troublesome work of moving the handrail 3 in the axial direction in order to fit into the insertion port 23 of the movable member of the connection tool, which has been conventionally required.

  Further, when joining the split pieces 11 together, it is only necessary to match the joint surfaces 13 with each other. Therefore, the handrail 3 to which the connection piece 20 is attached is moved as freely as possible to perform the positioning easily. Can do. Therefore, it is possible to shorten the time for connecting and operating the handrail 3.

It is a perspective view which shows the whole connection tool of this invention. It is a perspective view which shows the state which divided | segmented the connection tool of this invention. It is sectional drawing which shows a connection piece. It is sectional drawing which shows the state which changed the angle of the movable member of the connection piece.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Connection tool 2 Movable member 10 Connecting member 11 Dividing piece 11a Dividing piece 11b Dividing piece 12 Fastened part 15 Receiving part 15a Concave part 20 Connecting piece 21 Sliding part 21a Convex part 24 Connecting part

Claims (6)

In the connecting device in which the connecting member and the movable member for connecting the handrail to both ends of the connecting member are coupled by the coupling means so that the angle can be changed,
The connecting member is constituted by a pair of divided pieces that are detachably coupled to each other by fastening means,
One of the divided pieces includes a receiving surface portion that comes into sliding contact with the movable member at one end portion, and the other divided piece includes a receiving surface portion that comes into sliding contact with the movable member at the other end portion,
The movable member includes a sliding contact portion that faces the receiving surface portion on one end side, and a connection portion that connects a handrail to the other end side,
The coupling means is characterized in that the receiving surface portion and the sliding contact portion face each other, and the divided piece and the movable member are coupled to each other so that the angle can be changed.   The split piece is provided with a half barrel-like or half-cylindrical fastened portion integrally formed with the receiving surface portion, and is fastened by fastening means in a state where the fastened portions of both split pieces are combined. The connector according to claim 1.   The sliding contact portion of the movable member includes a convex surface portion formed of a hemispherical convex surface, and the receiving surface portion of the divided piece is a hemispherical concave surface into which the convex surface portion of the sliding contact portion is fitted. The connection tool according to claim 1, further comprising a portion.   The coupling means includes a shaft member disposed on a receiving surface portion of the divided piece and a guide groove provided in a sliding contact portion of the movable member, and the shaft member is movably inserted into the guide groove. When the shaft member moves along the guide groove, the split piece and the movable member are configured to be capable of relative movement so that their central axes intersect. Item 4. The connector according to any one of Items 1 to 3.   The coupling means is configured such that a pressing member attached to a distal end portion of the shaft member penetrating the receiving surface portion of the divided piece and the sliding contact portion of the movable member abuts from an inner wall surface side of the sliding contact portion. The connector according to claim 4, wherein the connector is configured to be fastened. A method for connecting the first handrail and the second handrail using the connection tool according to any one of claims 1 to 5,
The divided pieces and the movable members are integrally coupled by the coupling means to form two sets of connecting pieces,
While connecting one said connection piece to a 1st handrail and connecting the other connection piece tool to a 2nd handrail, the said division pieces are fastened by the said fastening means, 1st and 1st A method for connecting handrails, comprising connecting two handrails.

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