JP2002154781A - Swing connecting implement - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a swing connecting implement reasonably heightened in withstand load by improving the bearing value of a shackle by shear. SOLUTION: This swing connecting implement is provided with a shackle 5, a support body 19 screwable to a fitting object 6, and a swing support mechanism 8 for supporting the shackle 5 to the support body 19 swingingly around a horizontal axis Y. The swing connecting implement is further provided with a rotational support mechanism 9 for supporting the shackle 5 to the support body 19 rotatably around a vertical axis X. The swing support mechanism 8 is constituted by fitting a pair of shaft parts 14, 14 integrally formed at the support body 19 in the state of having a smooth outer peripheral surface, into connecting holes 15 respectively formed in a pair of leg parts 5a, 5a of the shackle 5, and providing a means s for impeding the slip-off of the leg parts 5a from the shaft parts 14.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention comprises a shackle, a support body configured to be screwed to an object to be mounted, and a swing support mechanism for swingably supporting the shackle with respect to the support body. Regarding the swing connection tool,
The present invention relates to a technique for increasing the support strength of a shackle on a support body.

[0002]

2. Description of the Related Art As shown in FIG. 4 and FIG.
And a support ring 2 which is rotatably fitted to the boss member 1 composed of the two parts, and a U-shaped shackle 3 which is swingably supported with respect to the support ring 2. Was. A pair of connecting bolts (4, 4) screwed to the support ring (2) through holes (3a) formed in a pair of legs (3A, 3A) of the shackle (3) is provided. By fixing, a rocking support mechanism having a horizontal axis Y was configured.

That is, since the shackle 3 is swingably supported by the support body 18 composed of the boss member 1 and the support ring 2, the shackle follows the inclination of the object to be mounted in the direction of the tensile load. As 3 swings,
A large bending moment due to the inclination in the load direction is less likely to act, so that the load resistance of the connecting tool can be increased. Incidentally, the support ring 2 has a vertical axis X
Thus, it is also rotatable with respect to the boss member 1.

[0004]

In the above-described rocking connection device according to the prior art, the screw portion 4a of the connection bolt 4 is connected to the support ring 2 in order to connect the shackle 3 with a small amount of play while allowing the rocking movement of the shackle 3. The shear force caused by the load applied to the connecting bolt 4 via the shackle 3 acts on the screw portion 4a since the portion is formed up to the position where the shackle 3 travels. Since a shearing force acts on a screw portion in which a thread groove having a crack shape is formed in a cross section in advance, it is disadvantageous in load resistance, and an expensive material having excellent strength is required to compensate for the disadvantage. There was room for improvement in this respect.

[0005] An object of the present invention is to provide an oscillating coupling device in which the shackle supporting force due to shearing is improved and the load resistance is increased without difficulty.

[0006]

[Structure] According to the structure of the first aspect, as shown in FIGS. 1 and 2, the shackle 5 and the supporting body 1 which can be screwed to the mounting object 6 can be fixed.
9 and a swing support mechanism 8 that swingably supports the shackle 5 with respect to the support body 19, the swing support mechanism 8 is connected to the pair of legs 5 of the shackle 5.
a and a pair of shafts 14 and 14 integrally formed in the support body 19 with a smooth outer peripheral surface, and a leg 5a.
Characterized in that it is provided with means s for preventing extraction from the shaft portion 14.

As shown in FIGS. 1 and 2, the second aspect of the present invention is the same as the first aspect, except that an axis X orthogonal to a swing axis Y of the shackle 5 by the swing support mechanism 8 is provided. A rotation support mechanism 9 for rotatably supporting the shackle 5 with respect to the support body 19 is provided.

[0008] As described above, reference numerals are provided for convenience of comparison with the drawings, but the present invention is not limited to the configuration shown in the accompanying drawings.

According to the first aspect of the present invention, the shaft formed integrally with the supporting body with a smooth outer peripheral surface is fitted into the connecting hole of the shackle leg. So
A portion receiving a shearing force acting on the shaft portion via the shackle does not have unevenness such as a screw portion, has a smooth outer peripheral surface, and can improve the shearing resistance. In addition, there are the following effects.

For example, the means of providing a pin shaft inserted in a retaining state instead of the connecting bolt in the conventional structure has a problem that the pin shaft, which is separate from the support main body, cannot be removed at all. On the other hand, in the present invention in which the shaft portion is integrally formed on the support body,
This is preferable because there is no possibility that the shaft portion comes off the support body. Also, in the structure in which the connecting bolts and the pin shaft are mounted, there is often backlash between these and the supporting body side, that is, there are many gaps, though slight, so that an impact load or a bending moment acts, and the May be lower than the expected value, but it is also preferable that such a risk does not first occur in the structure of the present invention.

According to the second aspect of the present invention, the shackle is rotatably supported with respect to the support main body around the axis perpendicular to the swing axis of the shackle by the swing support mechanism. As described above, it is possible to follow the inclination in the direction of the tensile load, and also to follow the inclination about the axis perpendicular to the axis about the inclination. Can be prevented from acting.

[Effect] In the swing connection device according to the first aspect, the hole of the shackle leg is fitted into the shaft formed integrally with the support body to prevent the shaft from coming off. Since the shear force is improved and the bending load and the impact load are not applied first, the load limit is improved and the reliability is improved.

[0013] In the swing connector according to the present invention, the shackle is supported so as to be swingable and rotatable with respect to the supporting body, and the posture of the shackle is adapted to any pulling direction. It has the advantage of being more convenient.

[0014]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 and FIG. 2 show the swinging connecting member B in an assembled state, and FIG. 3 shows an exploded perspective view, respectively. The swing connection tool B includes a shackle 5 and an attachment object 6.
A boss member 7 configured to be capable of being screwed to the boss member 7, a swing support mechanism 8 that supports the shackle 5 so as to swing with respect to the boss member 7, and a shackle 5 that is rotatably supported with respect to the boss member 7. And a rotating support mechanism 9 that rotates.

The boss member 7 includes a flange-shaped lower boss 7A having a bolt hole 7a and a lid-shaped upper boss 7B having a bolt hole 7b.
The C-ring relief 10 is formed at the upper end of the bolt hole 7a of the lower boss 7A. Mounting bolt 11 which can be screwed to mounting object 6
Are mounted through the bolt holes 7a and 7b, and a C-ring 12 externally fitted to the shaft portion 11a is located in the C-ring relief 10.

A ring-shaped trunnion 13 is fitted to the boss member 7 so as to be rotatable around a vertical axis X along the axial direction of the mounting bolt 11, and a pair of shaft portions integrally formed with the trunnion 13 is provided. By fitting the connecting holes 15 formed in the pair of legs 5a of the shackle 5 to the outside of the shackle 5, a horizontal axis perpendicular to the vertical axis X (an example of a swing axis) ) A swing support mechanism 8 that swings the shackle 5 around Y is constituted. The shaft portion 14 is formed in a state having no smooth irregularities such as a screw portion and a groove for mounting a snap ring, and has a smooth outer peripheral surface.

The rotation support mechanism 9 is formed by fitting the trunnion 13 and the boss member 7 so that the trunnion 13, that is, the shackle 5 is attached to the boss member 7 on the vertical axis (the swing axis Y). An example of an orthogonal axis is supported rotatably around X. The support body 19 is formed by the boss member 7 and the trunnion 13, and the shaft portion 14 is formed integrally with the support body 19.

The inverted U-shaped shackle 5 is formed by bending a straight double-ended shackle rod 5R shown in FIG. 3 hot (or at normal temperature), and is connected at the time of the bending. A step of fitting the hole 15 to the shaft 14 is also performed. In other words, the shackle 5 is fitted to the shafts 14 and 14 in a mating manner and does not normally come off. is there. Therefore, a means s for preventing the leg 5a from being pulled out from the shaft 14 is provided by providing a washer 17 fixed to a screw hole 14a formed in the shaft 14 with a screw 16.

Since the screw hole 14a and the pilot hole thereof do not reach the deepest portion of the shaft portion 14 at the root end thereof, the screw hole 14a and the lower hole of the shaft portion 14 which receive the shearing force due to the load from the shackle 5 are formed. At the root, the reduction of the cross-sectional area is avoided, and this also contributes to an increase in the shearing force.

[Alternative Embodiment] Although not shown, a support body 20 having a shape such that the boss member 7 and the trunnion 13 are integrated is provided, and only the swing movement of the shackle 5 about the horizontal axis Y is provided. May be a freely swingable coupling B. Also, when the leg 5a comes off from the shaft 14, the shaft 1
The pull-out preventing means s may be constituted by a shaft exterior type snap ring such as an E-ring provided in 4.

[Brief description of the drawings]

FIG. 1 is a front view, partially cut away, of an oscillating connector.

FIG. 2 is an overall side view of an oscillating connector.

FIG. 3 is an exploded perspective view of the swinging connector.

FIG. 4 is a partially cutaway front view showing a conventional swing connection tool.

FIG. 5 is a partially cutaway plan view of the swinging connector shown in FIG. 4;

[Explanation of symbols]

 Reference Signs List 5 shackle 5a leg 6 attachment target 8 swing support mechanism 9 rotation support mechanism 14 shaft section 15 connection hole 19 support body s means for preventing withdrawal Y swing axis X axis

Claims (2)

[Claims] An oscillating connector comprising a shackle, a support body configured to be screwed to an object to be mounted, and a swing support mechanism that swingably supports the shackle with respect to the support body. The swing support mechanism comprises a pair of shafts integrally formed on the support body with a connection hole formed in each of a pair of legs of the shackle and a smooth outer peripheral surface. A swing coupling tool comprising a means for fitting with a part and preventing the leg part from being pulled out from the shaft part. 2. A rotation support mechanism for rotatably supporting the shackle with respect to the support main body around an axis perpendicular to a swing axis of the shackle by the swing support mechanism. Item 2. The swing connection device according to Item 1.