JPS6021535Y2 - Butt rod fastening structure - Google Patents

Description

[Detailed description of the invention] This invention is designed to make it extremely easy to adjust the length of the two rods when joining them on the same axis, and to ensure that the two rods are fixed securely. The present invention relates to a fastening structure for a butt rod.

Conventionally, when trying to join two rods on the same axis, a method was generally used in which a female thread was provided at the end of one rod, a male thread was formed at the end of the other rod, and the two were screwed together. To prevent loosening, a double nut is used, or a small-diameter female thread is provided perpendicular to the female thread.
Methods such as fixing the male threaded part of the rod with small diameter bolts were used.

However, the above-mentioned conventional loosening prevention means cannot be used unless sufficient space is provided near the joint of the two rods, and for this reason, the two rods cannot be used against the parts incorporated in the equipment. The cases in which a joining structure can be adopted are inevitably limited, and if it is done, it is troublesome as it requires disassembling the device and removing the joining rod to adjust the length. there were.

In view of the above-mentioned shortcomings of the prior art, the present invention has been developed to make it possible to very easily adjust the length of two joined rods and to fix them when the two rods are used exclusively for tension or tension. To provide a butt rod fastening structure that can be reliably fastened.

Hereinafter, the present invention will be explained with reference to illustrated embodiments.

In FIG. 1, reference numeral 1 indicates a center line that rotates around a center line a as a fulcrum and is eccentric with respect to the center line a.

A main shaft integrally formed with eccentric shafts 1a+1b centered on C, 2 an orbital case to which a cover plate 2a is attached and rotated by the eccentric shaft 1b, and 3 an orbital case rotated by the eccentric shaft 1c. Plate, A is cover plate 2 integrated with orbital case 2
This is a snap head of a rotary wringing machine that performs a known slicing motion between a and an orbital plate 3.The top part is supported by the orbital plate 3, and the middle part is held by a cover plate 2a.

In FIG. 2, reference numeral 4 denotes a tenth node constituting the snap head A, and forms a female screw portion 4b as the hole 4as.

5 is the 20th node inserted into the hole 4a, and an inclined cutout 5a is formed.

6 is Kirikaki 5, as shown in detail in FIG.
7 is a backing made of an elastic material such as rubber, which is formed to match the slope of a, and has a male threaded portion 6a formed on the outer circumferential arcuate portion to be able to engage with the female threaded portion 4b.

FIG. 1 shows an embodiment in which the present invention is applied to a known multi-axis rotary tightening device, in which a rivet is tightened at the lower end of a snap head A, and a plurality of snap heads A are used depending on the number of rivets to be tightened. If there is a height difference in the tightening position, the length L of the snap head A shown in FIG. 2 is adjusted accordingly.

In FIG. 2, to explain the operation of adjusting the length L, when the 20th tube 5 is pulled downward with respect to the 10th tube 4,
The wedge 6 remains because the male threaded portion 6a is screwed into the female threaded portion 4b, and the 20th wedge 5 distorts the backing 7 between it and the wedge 6 and descends.

As a result, the cutter 5a that was pressing the male threaded portion 6a against the female threaded portion 4b also descends, so that the pressure bonding of the male threaded portion 6a to the female threaded portion 4b loosens.

If the 20th bolt is rotated in this state, the wedge 6 held by the cutter 5a will also rotate integrally and move up and down due to the screw engagement with the female screw part 4b, and accordingly the wedge 6 will be rotated.
The 20th dot 5 connected at a also moves up and down.

Once the predetermined length L is set, the 20th prong 5 is pushed up against the 10th prong 4 to join them together.

When the 20th wedge 5 is raised as described above, the wedge 6
does not rise because the male threaded portion 6a is screwed with the female threaded portion 4b, but the cut shim 5a rises, and its inclined surface presses the wedge 6 against the female threaded portion 4b.

As a result, the male threaded portion 6a and the female threaded portion 4b are screwed together very strongly and are bitten into each other to be coupled.

When the 10th bolt 4 and the 20th bolt 5 are configured to constitute the snap head A of a rotary wringing machine as in the above embodiment, the two are pressed together each time the wringing operation is performed, so the male screws are always screwed together. The threaded portion of the portion 6a with the female threaded portion 4b is also fastened, so this threaded portion will not loosen.
Moreover, the fastening can be unfastened very easily by simply pulling the 20th bolt 5 as necessary.

Contrary to the above-described embodiment, if the two rods are always pulled apart, the slope of the cutter 5a may be reversed and the wedge 6 may be loaded upside down. In order to release the fastening, the 20th rod 5 may be pushed into the first rod 4.

According to the present invention, extremely strong and reliable screw fastening can be achieved by adding only one part, the axle screw 6, as described above, so the structure is simple and the effect is easy to implement. can get.

According to the present invention, in order to fasten and release the joint when two rods butt and join,
There is no need to operate tools such as spanners or screwdrivers around the joints, and the first It is sufficient to operate either one of the 20th nodes in the thrust direction, and an extremely advantageous effect can be obtained when the device is installed in a space-restricted device.

According to the present invention, due to the synergistic action of the threaded part of the male screw and the female thread and the tapered part of the cut piece and the wedge, the length L can be adjusted extremely easily by tightening and releasing the joint part and adjusting the position of the joint part. The effect can be obtained by being able to perform the process easily, reliably, and accurately.

[Brief explanation of the drawing]

Fig. 1 is a cross-sectional view showing the head portion of a multi-axis rotary wringing machine to which an embodiment of the present invention is applied, Fig. 2 is an enlarged cross-sectional view of the snap head A shown in Fig. 1, and Fig. 3 is a cross-sectional view of the snap head A shown in Fig. 2. FIG. 2 is an enlarged perspective view of the wedge 6 shown in FIG. A...Snap head, '4 eases 1st
0 rod, 4b...Female thread part, 5...20th thread, 5a...Curved corner, 6...Wedge, 6a...Male thread part.

Claims (1)

[Claims for Utility Model Registration] A 10th bolt with a female thread in the thrust direction formed at one end, and an outer diameter that allows the other end to be inserted into the pilot hole of the female thread of the 10th bolt, and a bottom. having a 20th ridge formed with a ridge inclined in the thrust direction, and a surface that matches the slope of the ridge of the 20th ridge;
A male screw part was formed on the circumferential part to be screwed into the female thread part of the 10th ring, and it was loaded into the 20th ring so as to be movable in the thrust direction relative to the 20th ring. The wedge loaded in the 20th hole is screwed into the female threaded portion of the 10th knot by its male thread, and the male threaded portion and the female thread are connected to the 10th needle in the thrust direction. A fastening structure for abutting rod, which is constructed so that a crimped state or a crimped state is loosened by operating an inclined surface against a wedge due to relative action.