JP2598754B2 - Universal joint - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a universal joint having a novel structure in which a connected object is connected by performing centering in the width direction while permitting tilting and longitudinal displacement, and the connected object is supported at an initial position. It is about.

[0002]

2. Description of the Related Art Conventionally, various types of connection support members have been developed as members for performing connection or initial position support by performing centering in the width direction of an object to be connected while permitting tilting and longitudinal displacement. .

For example, a cover plate such as an expansion joint for concealing a gap structure of a building, which is configured as a means for preventing the destruction of the building caused by expansion and contraction due to a temperature change of the building, uneven settlement, and distortion due to an earthquake or the like, Flexible terminals for boarding and disembarking that are configured in aircraft terminals and ship terminals
Various structures are also used as means for suspending a bridge plate or the like constituting a joint of a bridge.

[0004] In this type of connection support structure, the centering must be maintained in the width direction and supported at the same height position while allowing the cover plate and the connection side plate to be tilted and displaced in the front-rear direction. Those having a structure in which rods are formed in a pantograph shape are generally used.

[0005]

However, the pantograph-type suspension structure not only has a problem in rigidity due to its complicated structure, but also has a problem in that the load of the suspension structure itself increases. Was. The present invention has been made in view of the above problems, and has a third structure supported between the structures at the same height while maintaining centering in the width direction while allowing tilting and displacement in the front-rear direction. An object of the present invention is to provide a universal joint having a robust, lightweight, and simple structure, which can be used at a place where the joint is formed.

[0006]

SUMMARY OF THE INVENTION A universal joint according to the present invention is a universal joint for connecting a third structure between supporting structures facing each other with a gap in between without disturbing the displacement of both structures. A support arm is pivotally attached to each of the support arms having the same length in the opposite directions of the connecting member so as to be hinged, and pivotally attached to the outer ends of the support arms so as to be rotatable with respect to the support-side structure. Each of the side mounting members is hinged and pivotably connected to each other, and one end of a suspension arm of equal length, which is flexibly extended and stretched in a V-shape, is connected to the connection member, and both support arms and a T-shape are provided. Hinged to swing freely so as to make
A supported-side mounting member rotatably pivotally connected to the supported-side structure is hinged to the outer end of the other suspension arm so as to be rotatable with respect to the supported-side structure. The gist of the invention is that a stable support connection is always provided at the center between the support-side members. In the above configuration, the support arm and the suspension arm can be formed of an extruded aluminum material.

[0007]

The universal joint has a structure in which a support arm that can be bent and stretched in a V-shape and a suspension arm that can be bent and stretched in a V-shape are connected in a T-shape by a hinge structure via a connecting member at the center. At the same time, the supporting-side mounting member and the supported-side mounting member are configured to be rotatably connected to the support and the supported body, respectively, so that the three parts have three degrees of freedom in three planes orthogonal to each other. Have.

Further, since the two support arms are configured to have the same length, even if the gap between the two support members expands and contracts and the refraction angle of the support arms changes, the connecting member is always in the center between the two support members. In position. In addition, since the suspension arms are also configured to have the same length, even if the refraction angles of the both suspension arms follow the displacement, the height of the supported-side mounting member and the connecting member pivotally connected to the supported member is increased. The position is always kept constant.

When the two supports are displaced in the plane direction, a support-side mounting member pivotally attached to the end of the support arm is pivotally attached to the support and pivotally connected to the end of the suspension arm. Since the pivotally attached supporting member is pivotally attached to the supported member, the displacement of the universal joint is absorbed by tilting of the universal joint. The center position is maintained at the initial position and stable support is achieved.

[0010] Further, since the universal joint can be made of an extruded aluminum material, a lightweight and robust member having a simple structure can be obtained.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The structure of a universal joint according to the present invention will be described below with reference to FIG. The universal joint 1 of the present invention can be formed from an extruded aluminum material. Reference numeral 2 denotes a rectangular flat plate-shaped connecting member, and both lateral edges of the connecting member 2 have the same length. The supporting arms 3 are hinged via a pin shaft 4 so as to be swingable in the horizontal direction. The swinging ends of the two support arms 3 are hinged via a pin shaft 5 so that the support-side mounting member 6 can swing freely in the horizontal direction.

A shaft hole 7 is formed in each of the support-side mounting members 6, 6, and supports a, a are opposed to each other via a pin shaft 8 rotatably inserted into the shaft hole 7. The hinged portion is pivotally attached to the side a, and has a structure in which a pivot surface orthogonal to the pivot surface of the hinge structure formed on both sides of the support arms 3 is formed.

At the lower end edge of the connecting member 2, a pair of equal-length hanging arms 9, 10 are hingedly connected via a pin shaft 11 so as to be able to flexibly extend and extend. The ends are hingedly connected via a pin shaft 12 so as to be swingable in the vertical direction, and the other end of the suspension arm 10 is connected to the pin shaft 1.
3 and is hingedly connected to the supported-side mounting member 14 through a swingable vertical direction.

A shaft hole 15 is formed in the support-side mounting member 14, and a pin shaft 16 rotatably inserted into the shaft hole 15 is provided between the support members a. It is pivotally connected to the center of the supported member b to be supported, and is connected to and supported by the supported member b.

The universal joint 1 having the above structure
Has a structure in which support arms 3 and 3 which can be bent and stretched in a V-shape and suspension arms 9 and 10 which can be bent and stretched in a V-shape are connected in a T-shape by a hinge structure via a connecting member 2 at the center. At the same time, the supporting-side mounting members 6, 6 and the supported-side mounting member 1
4 are pivotally connected to the supports a and a and the supported body b by pivot connection, respectively, and the three portions have degrees of freedom in planes orthogonal to each other.

Since the two supporting arms 3 and 3 have the same length, even if the gap G between the two supporting members a and a expands and contracts and the refraction angle of the supporting arms 3 and 3 changes accordingly, The connecting member 2 is always at the central position between the two supports a. In addition, the suspension arms 9, 10
Are also of equal length, even if the refraction angles of the two suspension arms 9 and 10 follow the displacement, the height of the supported-side mounting member 14 and the connecting member 2 pivotally connected to the supported body b is increased. The position is always kept constant.

When both supports b, b are displaced in the plane direction, the support-side mounting members 6, which are pivotally attached to the ends of the support arms 3, 3, are provided.
6 is rotatably pivotally connected to the supports b, b via a pin shaft 5, and a supported mounting member 14 pivotally connected to an end of the suspension arm 10 via a pin shaft 13. Since the universal joint 1 is pivotally attached to the supported member b, the displacement is absorbed by the tilting of the universal joint 1.

By this action, the supported member b is always stably supported at a fixed height at the center of the two supports a.

Next, an embodiment in which the universal joint according to the present invention is applied to a suspension member of an expansion joint device used as a structure for concealing a gap G for absorbing strain in a building will be described with reference to FIGS. Reference numerals 21 and 21 denote a pair of base frames fixed along the opposing edges of the buildings (supports) a and a with the strain absorbing gap G interposed therebetween, and are formed of an extruded aluminum material or the like. Anchor bolts 23 are attached to brackets 22 fixed to the edges of the buildings a.
And the like.

Reference numeral "b" denotes a cover plate (supported body) which slidably hangs both side edges of the base frames 21 and 21 and covers the gap G. Are slidably inserted toward a pocket 28 from a slit 27 formed on the inner side edge of a base frame cover 26 fixed to the front surfaces of both base frames 21 and 21 by screws 25.

The universal joint 1 is mounted between the base frames 21, 21 fixed to the buildings a, a and the cover plate b, and the description of the basic structure is omitted. The support arms 3, 3 connected to the connecting member 2 in a hinge-like manner so as to be swingable in the horizontal direction via the pin shaft 4 can freely bend in the horizontal direction and are sufficiently wider than the width of the gap G when expanded. (1.5 to 2.5 times). The support-side mounting members 6 and 6 connected to the ends of the support arms 3 and 3 are provided at predetermined positions on mounting edges 25 formed on the bases of the base frames 21 and 21 via the pin shaft 8. It is pivotally attached.

The supported mounting member 14 pivotally provided at the end of the suspension arm 10 of the universal joint 1 is connected to both base frames 21 and 2.
1 is rotatably connected to the center of the cover plate b via a pin shaft 13 so as to be suspended, and the cover plate b covering the gap G is supported by suspension.

In the expansion joint device having the above-described structure, the universal joint 1 has supporting arms 3 and 3 which can be bent and stretched in a V-shape in the horizontal direction and suspension arms 9 and which can be bent and stretched in a V-shape in the vertical direction. 10 are connected in a T-shape by a hinge structure via a connecting member 2 at the center. Since the two support arms 3 and 3 have the same length, the gap G for strain absorption is used.
The connecting member 2 is always at the center position between the two base frames 21 and 21 even if the angle of refraction of the supporting arms 3 and 3 changes following the expansion and contraction of the supporting arms 3 and 3.

Further, since the suspension arms 9 and 10 are also configured to have the same length, even if the refraction angles of the suspension arms 9 and 10 follow the displacement, the supported arms pivotally connected to the cover plate a. The height position of the side mounting member 14 and the connecting member 2 is always kept constant. By this action, the cover plate a is always suspended at the center position of both base frames 21 and 21 so as to maintain a constant height, and the gap G
Stable position to cover.

[0025]

As described above, the universal joint according to the present invention has a simple structure in which a member that bends in the horizontal direction and a member that bends in the vertical direction are connected in a T-shape at the center, and the universal joint can be used in the width direction. For example, when used in an expansion joint structure, when the cover plate that covers the gap in the building is supported by this universal joint, the angle of the bi-stretch structure of the device follows the displacement because it is a structure that maintains the support position in the front-rear direction. However, the end of the suspension arm, which is pivotally connected to the cover plate, is always at a constant height and is located at the center of both base frames, thereby stabilizing the cover plate so that it always covers the gap. Can be supported.

Further, since the universal joint can be made of an extruded aluminum material, it has features such as the ability to obtain a member having a lightweight and robust structure, and the effect of the present invention is extremely large.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing one embodiment of a universal joint according to the present invention.

FIG. 2 is an exploded perspective view showing an example in which the universal joint according to the present invention is applied to an expansion joint device for an outer wall surface.

FIG. 3 is a plan view of the same.

FIG. 4 is a longitudinal sectional view of the same.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Universal joint 2 Connecting member 3 Support arm 4,5,8,11,12,13,16 Pin shaft 6 Support side mounting member 9,10 Suspended arm 14 Supported side mounting member a Support body b Supported body (cover Board) G gap

Claims (2)

(57) [Claims] 1. A universal joint for connecting a third structure between support-side structures opposed to each other with a gap therebetween without hindering displacement of the two structures, wherein the universal joint has equal lengths in both directions opposite to a connecting member. The support arms are each hinged to pivot freely, and support-side mounting members pivotally attached to the outer ends of the two support arms so as to be rotatable with respect to the support-side structure. At the same time, one end of a suspension arm of equal length, which is flexibly connected in a V-shape, is hinged to the connection member so as to be hinged so as to form a T-shape with both support arms. And a support-side mounting member pivotally connected to the outer end of the other suspension arm so as to be rotatable with respect to the supported-side structure. Universally connected to a central portion between both supporting side members by a stable support connection at all times. . 2. The universal joint according to claim 1, wherein the support arm and the suspension arm are made of an extruded aluminum material.