JPS5868590A - Joint spring of spherical surface joint pipe - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a one-handed spring for a spherical joint pipe, and is particularly suitable as a one-handed spring for joining spherical joints such as automobile exhaust pipes.

Conventionally, as shown in Fig. 1, an automobile exhaust pipe has two parts: a part a that vibrates a lot, and a part that prevents vibrations as much as possible under the floor of the vehicle. A spherical joint may be incorporated into the In order to join these joints together, and to make the vibration-permitting and non-vibrating sides flexible, we welded 7 flanges C and d to the outside of the spherical part at both ends of the pipe, and both flanges/jumps. C and d as bolt c
It is often tightened with a coil spring f. In this case, a load set by the coil spring f is applied to the spherical sliding part,
Although the sliding angle allowed by the bolt hole is secured, there are many disadvantages such as the overall size, the natural weight, and the low product price, so it is desired that a different plan be realized. was.

The present invention achieves this without impairing the original function of the spherical joint.
The purpose of the present invention is to provide a joint spring for a spherical joint pipe, which can reduce the size t to reduce the storage space and weight, reduce the price by having a simple structure, and simplify assembly work. There is something to be said.

For this reason, the configuration of the joint spring of the present invention is such that it has a shape that follows the outer shape of the spherical universal joint that connects one pipe and the other pipe, while simultaneously connecting both the one joint and the other joint. a spring member for pressing a joint outer shape bent into a safety pin shape so as to have a spring force for pressing from the outside; a positioning ring surrounding the outer periphery of the other pipe by winding a part of this spring member; It is characterized in that it is attached to a spring load imparting ring which surrounds the outer periphery of the one tube and is formed by VC so that the end of the spring member is inscribed therein to obtain a spring load.

An embodiment of the present invention will be described below with reference to FIGS. 2 to 4.

8 in Figures 2 to 4, 1 is a spring load imparting ring, 2 is a spring member for pressing the outer shape of the Ti joint, 3 is a positioning ring, one of the four pipes (engine side exhaust pipe made of steel pipe),
5ti The other pipe (underfloor exhaust pipe made of steel pipe), 6 is a spherical flexible flat part connecting the one pipe 4 and the other pipe 5.

FIG. 2 shows the spring load-applying member 1 and the positioning spring member 2. As shown in FIG. In the figure, 7 is one end of the spring member 2, and 8 is the other end. Mako 9,1
0, 11.12 are the abutting portions of the one pipe 4 on the outer surface of the joint, 16°14.15, 16 are the abutting portions of the other pipe 5 on the outer surface of the joint, 17.1B, 19. Reference numeral 20 denotes a loosely curved portion n, and 21 and 22#'i are portions wound around the positioning ring 5.

That is, in FIG. 2, the spring member 2 for pressing the joint outline
shows the natural state, p1 free state,
Generally speaking, the spring member 2 has a shape that follows the outer shape of the spherical universal joint 6, and has a contact portion 9 that contacts the outer surface of the joint portion of one pipe 4 and a contact portion 9 that contacts the outer surface of the joint portion of the other pipe 5. The angle α between the contact portion 15 and the angle β between the similar contact portions 1o and 14 are the sixth
It is processed to be smaller than the angle formed by the outer shape of the spherical universal joint portion 6 shown in the figure.

Therefore, the spring member 2 in the state shown in figure s2 is #!
As shown in Figures 3 and 4, in order to assemble it to the outer surface of the spherical universal joint 6, attach the spring load imparting ring 1 to one of the tubes 4.
Put the spring members 2 together with the positioning ring 3 into the other tube 5, perform the necessary pipe end processing of the other tube 5, and then fit the plurality of spring members 2 into the outer shape of the armpit joint flat part 6. A bent portion 17 in which the abutting portions 9 and 15 are formed into a safety pin shape.
and a bent portion 2 in which the abutments s12 and 16 are shaped like safety pins.
0 toward the center of one tube 4, the one end 7S and the other end 8 become smaller than the inner diameter of the spring load imparting ring 1, so the ring 1 is assembled and the bent portion 17 and remove the presser 20. By doing this, the remaining loads of the angles α and β support the pipes 4 and 5 in the direction in which the joint portion 6 comes into close contact with each other, and if both 4 and 5 are bent by a stronger force, Since the spherical contact portion of the joint portion 6 slides, the desired universal joint is completed.

As described above, the joint spring of the present invention is composed of a spring member for pressing the joint outer shape, a positioning ring, and a spring load imparting ring, and the spring member is configured to connect one pipe to the other pipe. This is because it is bent into a safety pin shape so that it has a spring force that presses both one joint part and the other joint part from the outside while having a shape that follows the outer shape of the connected spherical universal joint parts. , without impairing the original function of the coccal joint, the size can be reduced to reduce the storage space and weight, and the price can be lowered by simplifying the structure, and the assembly work can be simplified. I can do it.

[Brief explanation of drawings]

Fig. 1 is a side view showing a part of a conventional spherical joint pipe in cross section, Fig. 2 is a partially cutaway perspective view showing an embodiment of the present invention, and Fig. 3 shows its assembled state. Partially sectional side view shown;
FIG. 4 is a front view with some parts of FIG. 5 omitted. DESCRIPTION OF SYMBOLS 1... Spring load imparting ring, 2... Spring member for pressing joint outer shape, 5... Positioning ring, 4...
One pipe, 5... The other pipe, 6... Spherical universal joint part O

Claims (1)

[Claims] (1) The outer shape of the spherical universal joint that connects one pipe and the other pipe is shaped like a bow and has a spring force that presses both the one joint part and the other joint part from the outside. a member for pressing the outer circumference of the joint bent into a safety bottle shape, a positioning ring that wraps a part of the member 72 around the outer periphery of the other pipe, and the outer periphery of the one pipe. A one-handed spring for a spherical joint tube, comprising: and a spring load imparting ring, which is arranged so as to obtain a spring load by inscribing the end of the spring member.