JP2002309746A - Universal connector for handrail - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate the disassembling of a universal connector even in the assembled state with a handrail installed thereto. SOLUTION: A pair of movable members 20 comprise a slit 25 provided on a protruding surface part 24 so as to extend in the circumferential direction for inserting a shaft member 40, respectively. The shaft member 40 is formed of a shaft body 41 inserted through a connecting member 30 in a rotation- preventive state, a locking part formed on one end part of the shaft body 41 and attached to and detached from the slit 25 of one movable member 20 so as to be capable of preventing the dropping-out thereof, and a pressing shaft concentric to the shaft body 41 which is concentrically extended from the other end part of the shaft body 41 and inserted to the slit 25 of the other movable member 20 in a relatively rotatably dropping-out preventive state. The locking part is constituted so as to be phase-changeable between a passing phase for passing the slit 25 by rotating the shaft body 41 around the shaft center and a locking phase for forming the locking state to the slit 25.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a handrail connecting member interposed between opposed ends of handrails arranged in series.

[0002]

2. Description of the Related Art Conventionally, there has been known a handrail free connector as shown in FIG. 6 described in Japanese Patent Application Laid-Open No. 11-6267. This free connection tool 100 includes a pair of movable members 101 into which a handrail T is fitted, a connecting member 102 provided between the movable members 101, and a connecting member 102 provided between the movable members 101. And a shaft member 103 which penetrates and couples them in the closed state.

The movable member 101 is formed of a cylindrical body having a hemispherical convex surface 104 at one end, and a handrail T is fitted at the other end.
04 is provided with a slit 105 formed radially outward from an axial center position through which the shaft member 103 passes.

The connecting member 102 is formed in a columnar shape, and has a shaft hole 106 through which the shaft member 103 is inserted at an axial center position, and each end face corresponding to the convex surface 104 of the movable member 101. A hemispherical concave portion 107 is provided, and the convex portion 104 of each movable member 101 is
07 and each slit 105 and shaft hole 1
06 by inserting the shaft member 103 into the movable member 10.
1 can rotate around the center of curvature in the direction in which the slit 105 extends.

The shaft member 103 is formed in a columnar shape, and a pressing member 108 is externally fitted to each side while being inserted into each slit 105 and the shaft hole 106, and is fixed by screws, thereby forming a pair of movable members. The member 101 is the connecting member 10
2 are connected to each other by a shaft member 103.

According to the universal connector 100 thus constructed, each movable member 101 is rotatable about the shaft member 103 and has a center of curvature in the direction in which the slit 105 extends with respect to the connecting member 102. Since it can rotate around, it is possible to freely change the posture three-dimensionally within a predetermined range, and thereby the handrail T fixed to the movable member 101 can be used at the construction site. The installation direction can be freely set according to the situation.

[0007]

However, in the conventional universal connecting device 100 as described above, the pair of movable members 101 are connected with the connecting member 102 and the shaft member 103 without the handrail T attached. After handrails T are attached to each other after they are connected to each other via the handrails, the movable members 101 cannot be connected to each other when the movable members 101 are attached to the handrails T in advance. However, there is a problem that the assemblability and workability in the handrail mounting work in the field are inferior.

Further, since the connecting member 102 can rotate around the shaft member 103, when the user of the handrail grasps the connecting member 102 in a state where the universal connecting device 100 is installed, the force is applied to the handrail. There is a disadvantage that the connecting member 102 may rotate and lack stability as a handrail.

Also, once each movable member 101 is
If the handrail T is attached to each movable member 101 after being connected to the connecting member 102 via the
Since the space surrounded by 1 and the end face of the handrail T is a closed space, the pressing member 108 located in the closed space cannot be removed, and as a result, the universal connecting device 100 cannot be disassembled. Therefore, there is also a problem that the maintainability such as inspection and repair is poor.

The present invention has been made in view of the above situation, and has excellent on-site assemblability and workability.
It is another object of the present invention to provide a handrail free connection tool that can be easily disassembled even when the handrail is once assembled and attached.

[0011]

According to the first aspect of the present invention,
A coupling member having a semi-spherical concave portion at both ends of a substantially cylindrical shape, and a semi-spherical convex surface portion fitted into the concave portion at one end of the substantially cylindrical shape, and a handrail at the other end. A connecting member provided with a pair of movable members; and a coupling member and a shaft member coupled to the movable member. The coupling member and the movable member are provided on the coupling member and the movable member in a state where the coupling members are coupled to each other. In the handrail free connecting device configured so that relative movement can be performed between the concave portion and the convex portion in a spherical contact state, the connecting member has a center hole through which the shaft member is inserted. The pair of movable members has a slit through which the shaft member extending outward from the center position of the concave portion is inserted, and the shaft member is penetrated by the connecting member in a non-rotating state. Formed at one end of the shaft body,
A retaining portion detachably attached to and detachable from a slit of one movable member, and a retaining member which is relatively rotatably inserted into a slit of the other movable member extending from the other end of the shaft main body. A retaining shaft that is concentric with the shaft main body, wherein the retaining portion has a passage phase that passes through the slit by rotating the shaft main body around the axial center, and a retaining stopper that is in a retaining state with respect to the slit. It is characterized in that it is configured to be able to change the phase with the phase.

According to the present invention, the relative bending operation of the connecting member and the pair of movable members along the spherical shape of the concave surface portion and the convex surface portion, and the relative torsional rotation of the other movable member and the connecting member. By combining the operations, the handrails respectively connected to the pair of movable members can be three-dimensionally connected at any angle.

By setting the retaining portion to the passing phase by rotating the shaft body via the connecting member, the shaft body can be attached to and detached from the slit of the movable member. By setting the phase to the retaining state once the part is passed through the slit, the shaft main body is connected to the movable member in the retaining state. Therefore, after passing the shaft main body through the slit from the inside of the other movable member and externally fitting the connecting member to a portion protruding from the slit to the outside, and inserting the retaining portion set to the passage phase into the slit of one movable member, By setting the retaining phase by rotating the connecting member, the pair of movable members is in a state of being assembled to the connecting member.

Further, even when the movable member is mounted on the handrail in advance, it is possible to connect the handrail via the universal connection device at the handrail installation site, and the assembling property of the universal connection device is improved. And the workability of the handrail is significantly improved as compared with the conventional case.

[0015] When disassembling the universal connecting device once assembled and having the handrail attached to each movable member, the phase of the retaining portion of the retaining portion is changed to the passing phase by rotating the connecting member. It should be done. By doing so, the retaining portion passes through the slit and is disengaged from one of the movable members, and the universal connection device is disassembled.

As described above, since the universal connecting device can be disassembled by rotating the connecting member, even if the movable member is assembled with the handrail attached to each movable member,
Conventionally, the universal connection device once assembled cannot be disassembled, and the inconvenience that inspection and repair cannot be easily performed is eliminated, thereby improving maintainability.

According to a second aspect of the present invention, in the first aspect of the present invention, the retaining member has a phase caused by relative rotation of the movable member and the shaft main body around the axis by applying a force of a predetermined amount or more. It is characterized by being configured to change.

According to the present invention, when the handrail is connected via the universal connecting device, the connecting member is rotated by a force equal to or more than two predetermined forces after the retaining portion is fitted into the slit. The retaining portion of the passing phase changes its phase to the retaining phase, whereby a pair of adjacent handrails are connected to each other via the universal connection tool. When the handrail connected is removed, the retaining portion set to the retaining phase may be changed to the passing phase by rotating the connecting member. By doing so, the retaining portion can pass through the slit, and each handrail can be separated.

According to a third aspect of the present invention, in the second aspect of the invention, the shaft main body is formed by a prism having a side length that can fit into the gap of the slit in a sliding contact state. The stopper portion is formed by cutting a base end side protruding in a radial direction from a distal end of the shaft main body to be engaged with an inner surface of the movable member and a cutout from an end surface of the shaft main body so as to include the shaft center. And a split groove provided.

According to the present invention, the projecting direction of the locking projection is adjusted to the extending direction of the slit so that the locking projection can pass through the slit, whereby the shaft body can be attached to and detached from the movable member. On the other hand, by rotating the shaft body by a predetermined angle by operating the connecting member in a state where the locking protrusion is inserted into the slit, the locking protrusion is locked on the inner surface of the movable member, and the shaft body is It becomes a state of retaining.

The shaft main body is formed by a prism and has a split groove cut from the end surface of the shaft main body. When the corner of the prism interferes with the wall surface of the slit, the shaft body is elastically deformed so that the groove width of the split groove is reduced, so that the shaft body can rotate. And since the connecting member does not rotate unless a force capable of causing the elastic deformation is applied to the connecting member around the axis, the connecting member does not rotate in a normal use state of the handrail. The conventional inconvenience that the connecting member is turned only by touching is solved, and the connecting member is in a stable state during normal use.

According to a fourth aspect of the present invention, in the first aspect of the present invention, the holding shaft has a cylindrical portion having a length set to at least a depth of a slit, and And a head that slides on the inner surface.

According to the present invention, since the pressing shaft to be inserted into the slit of the movable member is formed by the cylindrical portion and the head, the movable member is inserted into the slit while the pressing shaft is inserted into the slit. The movable member can be freely rotated around the cylindrical portion, thereby improving the degree of freedom in setting the handrail posture.

According to a fifth aspect of the present invention, in the first aspect of the present invention, the shaft main body is radially located at a position slightly longer than the depth of the slit from the retaining portion. Characterized in that it has a fitting prevention projection protruding toward.

According to the present invention, the fitting prevention protrusion interferes with the connecting member in a state where the shaft main body is fitted into the center hole of the connecting member, so that the shaft main body cannot be further fitted into the center hole. The state is prevented. Then, in a state where the handrail is fitted and fixed to the movable member after the movable member is connected to the connecting member, when the slit of the other movable member is externally fitted to the shaft main body, even if the convex portion of the movable member is Even if it hits the shaft main body, the inconvenience that the shaft main body fits into the center hole due to the presence of the fitting prevention projection and the movable member cannot be connected to the shaft main body is reliably prevented.

[0026]

FIG. 1 is an exploded perspective view, partially cut away, showing a first embodiment of a handrail free connection device according to the present invention, and FIG. 2 is an assembled perspective view thereof. FIG. 3 is a sectional view taken along line AA of FIG. As shown in these figures, the universal connecting device 10 includes a pair of movable members 20 mounted on the handrail T, a connecting member 30 sandwiched between the pair of movable members 20, a pair of movable members 20, It has a basic configuration including a shaft member 40 for connecting the connecting member 30.

The movable member 20 has a cylindrical portion 21 having an inner diameter into which a cylindrical handrail T can be fitted in a sliding contact state.
And a hemispherical portion 22 extending concentrically at one end of the cylindrical portion 21. A screw hole 23 is formed at an appropriate position on the peripheral surface of the cylindrical portion 21. The screw hole 23 is formed in the radial direction, and a wooden screw is inserted into the screw hole 23 with the handrail T inserted into the cylindrical portion 21. The handrail T is fixed to the movable member 20 by being passed through and screwed into the handrail T.

On the surface of the hemispherical portion 22, a convex portion 24 having a radius equal to one half of the outer diameter of the cylindrical portion 21 is formed. The convex portion 24 has a central position 22a.
A slit 25 is bored outward from (an intersection point between the axis of the cylindrical portion 21 and the convex surface 24). The slit 25 is for inserting the connecting member 30.

The connecting member 30 includes a base disk 31 whose outer diameter is substantially equal to that of the movable member 20,
1, a rectangular tube 32 formed concentrically and integrally at the center, an inner cylinder 33 formed concentrically and integrally at a position radially outside the rectangular tube 32, and a further radially outer portion of the inner cylinder 33 An outer cylinder 34 is formed concentrically and integrally at the position. The square tube 32 has a square hole 32a through which the shaft member 40 is inserted.

Each of the cylinders 32, 33, and 34 protrudes outward so as to be symmetrical from the front and back of the base disk 31.
And in the order of the outer cylinder 34. An envelope formed by connecting the edge surfaces of the inner cylinder 33 and the outer cylinder 34 so as to extend radially outward from the center position of the square tube 32 around the center is formed by an envelope surface formed by the envelope surface. A semicircular concave portion 35 is formed.

The radius of curvature of the concave portion 35 is set to be substantially the same as the radius of curvature of the convex portion 24 of the movable member 20. Therefore, by sandwiching the connecting member 30 between the hemispherical portions 22 of the movable members 20, as shown in FIG. 3, the convex portion 24 of the hemispherical portion 22 of each movable member 20 and the concave portion 35 of the connecting member 30 are respectively formed. The movable member 20 is thereby brought into sliding contact with the connecting member 30 so that the convex portion 2
4 can be three-dimensionally rotated around the center of curvature.

However, the amount of protrusion of the rectangular tube 32 to one side (the left side in FIGS. 1 to 3) is determined by the fitting prevention protrusion 4 described later.
In order to secure a space for mounting the movable member 4 between the hemispherical portion 22 of the movable member 20 and the tip of the rectangular tube 32, the amount of protrusion of the movable member 20 to the other side is made smaller.

The shaft member 40 has a prismatic shaft body 41.
A shaft (cylindrical portion) 42 concentrically protruding from one end face (right side in FIGS. 1 to 3) of the shaft body 41;
A pair of locking projections 43 projecting from the other end of the shaft body in the opposite direction, and a pair of fitting projections projecting in the opposite direction at a substantially intermediate position in the longitudinal direction of the shaft body 41. It comprises a prevention projection 44 and a retaining disc (head) 45 which is concentrically fixed to the end face of the circular shaft 42.

The shaft main body 41 is formed in a rectangular cylindrical shape so that the length of one side is slightly smaller than the width of the slit 25, and can be fitted into the square hole 32a in a sliding contact state. As a result, the shaft main body 41 is fitted into the slit 25 and the square hole 32a in a detented state. In particular, the shaft main body 41 is fitted into the square hole 32a in a completely detented state, while the slit 2
5, by applying a force equal to or more than a predetermined force toward the axial direction of the shaft main body 41 by the action of a split groove 46 described later, the shaft main body 41 rotates due to its reduced diameter elastic deformation. You can do it.

The width of the locking projection 43 in the direction perpendicular to the axis of the shaft main body 41 is set to be the same as the length of one side of the shaft main body 41, whereby the locking projection 43 and the shaft main body 41 are formed. Can be inserted through the slit 25.
The locking projection 43 has a passing phase that can pass through the slit 25 by a forward / reverse rotation operation about the axis of the connecting member 30,
It cannot interfere with the edge of the slit 25 and cannot pass therethrough, so that the phase can be changed between the retaining phase and the retaining phase which is prevented from coming off from the hemispherical portion 22.

The length of the shaft main body 41 from the right end in FIG.
And the length from the fitting prevention protrusion 44 to the locking projection 43 is set slightly larger than the thickness of the hemispherical portion 22. The circular shaft 42 has a diameter of the shaft main body 41.
And the length is set slightly longer than the thickness of the hemispherical portion 22.

The retaining disc 45 has a diameter larger than that of the circular shaft 42, and the surface of the movable member 20 facing the hemispherical portion 22 is spherical so as to be in sliding contact with the inner surface of the hemispherical portion 22. . A center hole 45a is formed at the center of the retaining disc 45, and a screw hole 42a is screwed concentrically on the end face of the circular shaft 42 so that the circular shaft 42 is positioned outside the movable member 20 from outside. By inserting the screw S into the center hole 45a and screwing it into the screw hole 42a while being inserted into the slit 25, as shown in FIG.
0 is connected to the connecting member 30 in a retaining state.

The shaft main body 41 of the shaft member 40 thus configured has a V-shaped split groove cut toward the center from the end face on the side where the locking projection 43 is provided. 4
6 are provided. Due to the presence of the split groove 46, by applying a force of a predetermined strength or more in a direction of rotating the shaft main body 41 around the axis with respect to the movable member 20 in a state where the shaft main body 41 is fitted into the slit 25, Shaft body 41
Is rotated while being elastically deformed so that the groove width dimension of the split groove 46 is reduced, and is restored to the original state by the rotation of 90 °.

The circular axis (column portion) of the shaft member 40
42 and the retaining disc (head) 45 form a pressing shaft of the present invention, and a locking projection 43 protruding from the distal end of the shaft member 40, and cut from the distal end surface. The retaining portion according to the present invention is formed by the split groove 46 formed in the inserted state.

FIG. 4 is an explanatory view for explaining the assembling of the universal connection device 10 of the first embodiment.
Is a state immediately before mounting the movable member 20 on the right side of the connecting member 30, (b) is a state in which the handrail T is attached to the right movable member 20 connected to the connecting member 30, (c).
The state where the left movable member 20 is being connected to the connecting member 30 is shown.
3 shows a state in which the connection member 30 is prevented from falling off and is connected to the connection member 30. In addition, (d)-is a cross-sectional view in a side view, and (d)-is a BB line view of (d)-.

First, in the state shown in FIG. 4A, the shaft main body 41 is fitted into the square hole 32a of the square tube 32 of the connecting member 30 from the left side, and the fitting prevention projection 44 is fitted to the left edge of the square tube 32. , The shaft body 41 is prevented from further fitting into the shaft body 41, and the circular shaft 42 protrudes outside from the right end of the square tube 32. In this state,
The slit 25 of the movable member 20 on the right side on which the handrail T is not mounted is externally fitted to the circular shaft 42, and furthermore, a retaining disc 45
The screw S is screwed into the screw hole 42a through the center hole 45a and fastened in a state where the center hole 45a is opposed to the screw hole 42a of the circular shaft 42, as shown in FIG. , The right movable member 20 is connected to the connection member 30.

Next, the movable member 20 on the left side, on which the handrail T is already mounted, is brought close to the connecting member 30 so that the slit 25 is fitted on the shaft main body 41 via the locking projection 43. After confirming that the locking projection 43 has been fitted into the hemispherical portion 22 by this operation, the connecting member 30 is rotated by 90 ° about the axis, as shown in FIG. In addition, the left movable member 20 is connected to the connecting member 30, and the adjacent handrail T is
And the connection member 30.

Then, the left movable member 20 is connected to the connecting member 3.
In a state where the movable member 20 and the connecting member 30 are connected to the movable member 20 and the connecting member 30, as shown in FIG. Will be reliably prevented from coming off.

Also, once the left movable member 20 is connected to the connecting member 30, if a force for elastically deforming the shaft main body 41 is not applied to the connecting member 30 so as to reduce the width of the split groove 46, the connecting member 30 is not connected. Does not rotate, and the user of the handrail T does not apply such a large force to the connecting member 30, so that there is no inconvenience that the connecting member 30 rotates while using the handrail T.

When the handrail T must be removed from the connecting member 30 for maintenance and inspection, the connecting member 30 is moved around the axis by a large force capable of elastically deforming the shaft body 41.
By rotating by 0 °, the locking projection 43 is
5 so that the left handrail T can be removed from the connecting member 30.

As described in detail above, the universal connecting device 10 of the present invention includes a connecting member 30 having a semi-spherical concave surface 35 at both ends of a columnar shape, and a concave portion 35 at one end of a substantially cylindrical shape.
A pair of movable members 20 each having a hemispherical convex surface portion 24 that fits with the other hand, and the other end connected to the handrail T; a coupling member 30 and a shaft member 40 coupled to the movable member 20; The member 30 and the movable member 20 are configured so that the concave portion 35 and the convex portion 24 provided on the member 30 and the movable member 20 can move relative to each other in a spherical contact state. Each of the convex portions 24 is provided with a slit 25 through which the shaft member 40 is inserted, and the shaft member 40 is inserted through the connecting member 30 in a detented state.
A retaining member detachably attached to the slit 25 of one movable member 20 formed at one end of the shaft member 41, and the other movable member 20 extending concentrically from the other end of the shaft body 41. The shaft 25 is provided with a holding shaft that is concentrically inserted into the slit 25 so as to be relatively rotatable so that the slit 25 can be rotated by rotating the shaft main body 41 around the axis. Since the phase can be changed between the passing phase that passes through and the retaining phase that is in the retaining state with respect to the slit 25, the pivoting operation of the shaft main body 41 via the connecting member 30 causes the removal. By setting the stop portion to the passing phase, the shaft main body 41 can be attached to and detached from the slit 25 of the movable member 20 and set to the stop prevention phase once the stopper portion is once passed through the slit 25. By doing, the shaft body 4 It can be coupled to the movable member 20 to a retaining state.

Therefore, the shaft main body 41 is connected to the other movable member 20.
The connecting member 30 is externally fitted to a portion of the movable member 20 which passes through the slit 25 and protrudes to the outside from the inside of the movable member 20. The pair of movable members 20 are connected to the connecting member 30
The assemblability and on-site workability are greatly improved as compared with the past.

Then, once assembled, each movable member 2
When disassembling the universal connection tool 10 with the handrail T attached to 0, the phase of the retaining portion of the retaining portion can be changed to the passing phase by rotating the connecting member 30. By doing so, the retaining portion passes through the slit 25 and is disengaged from the one movable member 20, whereby the universal connection device 10 can be disassembled.

As described above, even if the universal connecting device 10 is assembled with the handrail T attached to each movable member 20, it can be disassembled by rotating the connecting member 30. Once assembled, the universal connecting device 10 cannot be disassembled, so that the inconvenience that inspection and repair are difficult is eliminated, and the maintainability can be improved.

In the first embodiment,
The shaft main body 41 is formed by a prism having a length of one side so that the shaft main body 41 can be fitted into the gap of the slit 25 in a slidable state, and the retaining portion has a base end side protruding radially from the distal end of the shaft main body 41. A locking projection 43 for locking to the inner surface of the movable member 20;
Since it is composed of the split groove 46 cut from the end face of the shaft main body 41 so as to include the axis, the projecting direction of the locking projection 43 is adjusted to the extending direction of the slit 25 so that the locking projection 43 is The shaft main body 41 can be attached to and detached from the movable member 20 while the locking projection 43 is inserted through the slit 25. By rotating 41 by 90 °, the locking projection 43 is locked on the inner surface of the movable member 20, whereby the shaft main body 41 can be kept in a retaining state.

Since the shaft main body 41 is formed of a prism and has a split groove 46 cut from the end face of the shaft main body 41, the connecting member 30 is formed.
In the rotation operation about the axis of the shaft body 41, the corner of the prism interferes with the wall surface of the slit 25 so that the split groove 4
The shaft body 41 is elastically deformed so that the groove width of the shaft 6 is reduced.
Can be turned around the axis.

The connecting member 30 does not rotate unless a force capable of causing elastic deformation is applied to the connecting member 30 around the axis.
0 does not rotate, and therefore, the conventional inconvenience that the connecting member 30 rotates only by touching it is eliminated, and the connecting member 30 can be in a stable state during normal use.

Further, the holding shaft is provided with a circular shaft 42 having a length set to at least the thickness of the edge of the other slit 25,
The movable member 20 is smoothly rotated around the circular shaft 42 in a state where the circular shaft 42 is inserted into the slit 25 because the retaining disk 45 is configured to be in sliding contact with the inner surface of the other movable member 20. In this manner, each movable member 20 can be arbitrarily rotated around the circular axis 42, and the degree of freedom in setting the posture of the handrail T can be easily improved.

Furthermore, in the first embodiment, since the fitting prevention protrusion 44 for preventing the shaft main body 41 from being fitted into the square hole 32 a of the connecting member 30 is provided, the shaft main body 41 is connected to the connecting member 30. In the state fitted in the square hole 32a,
The fitting prevention protrusion 44 interferes with the connecting member 30, so that the fitting of the shaft main body 41 into the square hole 32 a can be prevented.

Therefore, after the movable member 20 is connected to the connecting member 30 and the handrail T is fitted and fixed in the movable member 20, the slit 25 of the other movable member 20 is fixed.
When the shaft member 41 is externally fitted to the shaft body 41, even if the convex portion 24 of the movable member 20 collides with the shaft body 41, the shaft body 41 is fitted into the square hole 32 a due to the presence of the fitting prevention protrusion 44. The inconvenience can be prevented, and the movable member 20 can always be reliably connected to the shaft main body 41.

FIG. 5 is a side sectional view showing a second embodiment of the universal connection device according to the present invention. The universal connection device 10a of the second embodiment has the movable member 20 and the connection member 30 that are completely the same as those of the first embodiment, but the shaft member 40a is slightly different from that of the first embodiment. ing. That is, in the second embodiment, the shaft member 40
In a, the shaft main body 41, the circular shaft 42 and the retaining disc 45 are integrally formed from the beginning, and the shaft main body 41 is provided with a member corresponding to the fitting prevention protrusion 44 of the first embodiment. Not.

Therefore, the pair of movable members 20 and the connecting members 3
When the handrails T are connected to each other, the shaft member 40a is first passed through the slit 25 from the inside of the right movable member 20 in FIG. 43 is pressed into the square hole 32 a of the connecting member 30. Then, the presence of the split groove 46 allows the shaft body 41
The pair of locking protrusions 43 elastically deform so as to approach each other and go under the square hole 32a, and the locking member 43 comes out of the square hole 32a, so that the connecting member 30 is connected to the shaft member 4.
0.

In this state, the handrail T is fitted into the right movable member 20 and fixed to the movable member 20 by screwing.
Next, the slit 25 of the left movable member 20 is
The connecting member 30 is rotated by 90 ° around the axis in a state in which the engaging protrusion 43 is positioned inside the movable member 20 by being fitted to the outside of the movable member 20.
By doing so, as shown in FIG.
3 are locked to both side edges of the slit 25, and the shaft member 40a is held in a state where the pair of movable members 20 sandwich the connecting member 30.
Are connected to each other.

According to the universal connecting device 10a of the second embodiment, the shaft member 40a composed of the shaft main body 41, the circular shaft 42 and the retaining disc 45 is integrally formed from the beginning, and in the first embodiment, Since the provided fitting prevention protrusion 44 is not provided on the shaft main body 41, the shaft member 40
The structure of “a” is simplified, which contributes to a reduction in the cost of parts, and facilitates the on-site construction of the handrail T as in the first embodiment.

The present invention is not limited to the above embodiment, but includes the following contents.

(1) In the above embodiment, the connecting member 30 has the concave portion 35 formed by the envelope surface of the edges of the rectangular cylinder 32, the inner cylinder 33, and the outer cylinder 34. The concave portion 35 is not limited to being formed by the envelope surface as described above, and the connecting member 30 may be formed by a completely solid body in which the square tube 32, the inner cylinder 33, and the outer cylinder 34 are not present. Formed by goods,
A concave portion 35 may be formed on the end face of this solid product.

(2) In the above embodiment, in order to rotate the shaft main body 41 integrally with the connecting member 30, the square cylinder 32 having the square hole 32 a is provided at the axial center position of the connecting member 30, while the shaft main body 41 is provided. Is formed in a prismatic shape corresponding to the square hole 32a.
a is provided, and the shaft main body 41 is not limited to the prismatic shape. The shape of the hole at the axial center position of the connecting member 30 and the shape of the shaft main body 41 fitted into the hole are not limited to a circular shape ( For example, a hexagonal shape, an octagonal shape, a shape in which a key groove is provided on one side and a key is provided on the other side, or the like may be used.

(3) In the first embodiment described above, the circular shaft 42 is formed integrally with the shaft main body 41. Instead of this, the circular shaft 42 is formed integrally with the retaining disc 45. It may be.

(4) In the second embodiment described above, FIG.
The tip of the handrail T may be tapered so that the tip of the handrail T can be brought into contact with the retaining disc 45 in a state where the handrail T is fitted in the right movable member 20. By doing so, the shaft member 40a
Is prevented from moving relative to the right movable member 20 to the right, the movable member 20 is locked when the slit 25 of the left movable member 20 is fitted to the locking protrusion 43. Even if it hits the projecting piece 43, the locking projecting piece 43
The inconvenience of moving in the direction of the square hole 32a does not occur, and the slit 25 can be externally fitted to the locking projection 43 in a constantly stable state, which leads to an improvement in assembly efficiency.

[0065]

According to the first aspect of the present invention, the shaft member connecting the pair of movable members and the connecting member is provided with a shaft main body penetrating the connecting member in a detented state, and one of the shaft main bodies. A retaining part detachably attached to and detachable from a slit of one movable member formed at one end, and a rotatable relative to a slit of the other movable member extending concentrically from the other end of the shaft body. It is composed of a shaft main body and a concentric presser shaft that is inserted in the state of being prevented from being pulled out, especially the retaining part, the passing phase that passes through the slit by rotating the shaft body around the axis, and the slit Since the phase can be changed between the retaining phase and the retaining phase to be in the retaining state, the retaining section is set to the passing phase by rotating the shaft main body via the connecting member, and the shaft is When the main body can be attached to and detached from the slit of the movable member Moni, by setting the retainer phase while passing through once slit the retained portion may be connected to the movable member to the shaft body in a retaining state.

Then, when disassembling the universal connecting device once assembled and having the handrail attached to each movable member, the phase of changing the retaining phase of the retaining portion into the passing phase by rotating the connecting member is changed. It should be done. By doing so, the retaining portion passes through the slit and comes off one of the movable members, so that the universal connecting device can be disassembled.

As described above, even if the universal connecting device is assembled with the handrail attached to each movable member, it can be disassembled by rotating the connecting member.
The inconvenience that the conventional universal connecting device once assembled cannot be disassembled is eliminated, and maintenance and maintenance can be improved, such as easy inspection and repair.

According to the second aspect of the present invention, the phase of the retaining portion is changed by the relative rotation of the movable member and the shaft main body around the axis by applying a force of a predetermined amount or more. When the handrail is connected via the connector, the retaining member is inserted into the slit, and then the connecting member is rotated with a force of at least two predetermined forces. As a result, the pair of adjacent handrails can be connected to each other via the universal connection tool. Also, when removing the handrail that is connected, it is only necessary to change the retaining portion set to the retaining phase to the passing phase by rotating the connecting member, so that the retaining portion passes through the slit. Each railing can be made separable.

According to the third aspect of the present invention, the shaft body is
It is formed by a polygonal column having one side length that can be fitted into the gap of the slit in a sliding contact state, and the retaining portion is formed such that a base end side protruding radially from a distal end of the shaft main body is engaged with an inner surface of the movable member. Since it was configured to include a locking projection to be stopped and a split groove formed by cutting from the end face of the shaft main body so as to include the shaft center,
By aligning the projecting direction of the locking projection with the direction in which the slit extends, the locking projection can be passed through the slit, whereby the shaft body can be attached to and detached from the movable member. By rotating the shaft main body by 90 ° by operating the connecting member in a state in which the shaft main body is inserted into the slit, the locking projection is locked to the inner surface of the movable member, and thereby the shaft main body can be prevented from coming off. it can.

The shaft body is formed by a prism and has a split groove cut from the end face of the shaft body, so that the shaft body can be rotated by the connecting member around the axis. When the corner of the prism interferes with the wall surface of the slit, the shaft main body can be made rotatable by elastically deforming so as to reduce the groove width of the split groove. The connecting member does not rotate unless a force capable of causing elastic deformation is applied to the connecting member around the axis, so that the connecting member does not rotate in a normal handrail use state. The conventional inconvenience that the connecting member rotates only by touching it is solved, and the connecting member can be brought into a stable state during normal use.

According to the fourth aspect of the present invention, the holding shaft is
At least the other slit has a cylindrical portion whose length is set to the thickness of the edge, and a head that is in sliding contact with the inner surface of the other movable member. In the inserted state, the movable member can smoothly rotate around the columnar portion, whereby each movable member can be arbitrarily rotated around the columnar portion, and the degree of freedom of the handrail posture setting can be set. Can be improved.

According to the fifth aspect of the present invention, the shaft main body includes:
Since the fitting prevention protrusion protruded radially is provided at a position slightly longer than the depth dimension of the slit from the retaining part, the fitting is performed with the shaft main body fitted into the center hole of the connecting member. The prevention protrusion interferes with the connecting member, so that it is possible to prevent the shaft main body from being fitted into the center hole further. Then, in a state where the handrail is fitted and fixed to the movable member after the movable member is connected to the connecting member, when the slit of the other movable member is externally fitted to the shaft main body, even if the convex portion of the movable member is Even if it hits the shaft main body, the inconvenience that the shaft main body fits into the center hole due to the presence of the fitting prevention protrusion and the movable member cannot be coupled to the shaft main body can be reliably prevented.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing a first embodiment of a handrail free connection device according to the present invention, which is partially cut away.

FIG. 2 is an assembled perspective view of the universal connection device of FIG. 1;

FIG. 3 is a sectional view taken along line AA of FIG. 2;

FIGS. 4A and 4B are explanatory diagrams for explaining the assembly of the universal connection device of the first embodiment, wherein FIG. 4A shows a state immediately before a movable member is mounted on the right side of the connection member, and FIG. (B) is a state where the left movable member is being connected to the connecting member, (D) is a state where the left movable member is being connected to the shaft member. The state where it was stopped and was connected to the connecting member is shown. In addition, (d)-is a cross-sectional view in a side view, and (d)-is a BB line view of (d)-.

FIG. 5 is a side sectional view showing a second embodiment of the universal connection device according to the present invention.

FIG. 6 is a cross-sectional side view showing a conventional handrail free connection tool.

[Explanation of symbols]

 10, 10a Free connector 20 Movable member 21 Cylindrical part 22 Hemisphere part 22a Central position 23 Screw hole 24 Convex part 25 Slit 30 Connecting member 31 Base disk 32 Square cylinder 32a Square hole 33 Inner cylinder 34 Outer cylinder 35 Concave part 40 , 40a Shaft member 41 Shaft main body 42 Circular shaft 42a Screw hole 43 Locking protruding piece 44 Fitting prevention protrusion 45 Retaining disc 45a Center hole 46 Split groove

Claims (5)

[Claims] 1. A connection member having a semi-cylindrical concave portion at both ends of a substantially cylindrical shape, and a semi-spherical convex surface portion fitted into the concave portion at one end of the substantially cylindrical shape, and the other end. A pair of movable members provided with handrail connection means, a coupling member and a shaft member coupled to the movable member, wherein the coupling member and the movable member are coupled by the shaft member. In the handrail free connecting device configured to be able to relatively move the concave surface portion and the convex surface portion provided in these in a spherical contact state, the connecting member has a central hole through which the shaft member is inserted. The pair of movable members has a slit through which the shaft member extends outward from the center position of the concave portion, and the shaft member is penetrated by the connecting member in a detented state. A shaft body, formed at one end of the shaft body; A retaining portion detachably attached to and detachable from the slit of one of the movable members, and a retaining member inserted into the slit of the other movable member extending from the other end of the shaft main body so as to be relatively rotatable. A retaining shaft that is concentric with the shaft main body, wherein the retaining portion has a passage phase that passes through the slit by rotating the shaft main body around the axial center, and a retaining stopper that is in a retaining state with respect to the slit. A handrail free connection device characterized in that it can be changed in phase between the handrail and the handrail. 2. A structure in which the phase of the retaining portion is changed by relative rotation of the movable member and the shaft main body around the axis by applying a force of a predetermined amount or more. Item 2. A handrail free connection tool according to Item 1. 3. The shaft main body is formed by a polygonal column having a side length of a dimension that can fit into the slit in a sliding contact state, and the retaining portion protrudes radially from a tip of the shaft main body. And a split groove formed by cutting from the end surface of the shaft main body and capable of elastically deforming the shaft main body so as to reduce the diameter. The handrail universal connection device according to claim 2, wherein 4. The holding shaft according to claim 1, wherein the holding shaft includes a cylindrical portion having a length set to at least a depth dimension of the slit, and a head slidably contacting an inner surface of the movable member. The handrail free connection device according to any one of 1 to 3. 5. The shaft body has a fitting prevention projection protruding radially at a position slightly longer than a depth dimension of a slit from the retaining portion. The handrail free connecting device according to any one of claims 1 to 4.