JPS6237972Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a lifting device for a hermetic compressor main body that securely attaches the hermetic compressor main body to an outer shell via a plurality of coil springs.

Conventionally, in order to fix the hermetic compressor main body a to the outer shell b, a spring mounting part d having a mounting hole e is provided in the upper side of the main body a, as shown in Utility Model Application No. 52-27612 in Fig. 1. screw the coil spring e into the above mounting hole c, and screw the coil spring e into the above spring mounting part d.
A support fitting f is welded to the inner wall of the outer shell b facing the outer shell b. The support fitting f is bent into a U-shape, and the upper support arm g is provided with a cut-and-raised portion h whose tip faces outward, and the mounting hole c
The coil near the upper end of the coil spring e screwed upward from the main body a is press-fitted and locked into the cut-and-raised portion h, thereby elastically supporting the main body a. Such a support structure has the advantage of being easy to install, but if some abnormal force is applied to the compressor or if it is stacked horizontally to improve transport efficiency, the coil spring e will be forced to the cut-and-raised portion h. The unit will separate from the unit, causing abnormal vibrations and making normal operation impossible. In order to compensate for these shortcomings, the second
As shown in the figure, a coil spring j secured to a support fitting i was covered with a metal cup k and fixed with a screw l, but this had the disadvantage that there were a large number of parts and a large number of man-hours were required to tighten the screws. Also, the third
As shown in the figure, a method of inserting the terminal end of a coil spring m into a through hole o of a support fitting n is also well known, but it is impossible to securely hold it.

This invention was made in consideration of the above circumstances, and its purpose is to provide a spring locking part for locking to a coil spring and a mounting part to be inserted into a through hole of a spring hanger. It is an object of the present invention to provide a hermetic compressor in which there is no risk that the main body of the hermetic compressor will separate from a spring hanger due to a locking tool.

An embodiment of this invention will be described below with reference to the accompanying drawings. Reference numeral 1 in FIGS. 4 and 5 is a spring hanger welded to the inner wall of the outer shell, and a bent portion 1a serving as a locking portion is formed at the upper portion of the spring hanger 1. A circular through hole 2 is provided approximately at the center of the bent portion 1a, and a locking groove 3 is provided at the same center as the through hole 2. On the other hand, the through hole 2 has a spring locking part 6 formed of, for example, an elastic plastic material and having an annular groove 5 formed in the head part into which the coil spring 4 is inserted, and a spring locking part 6 that protrudes outward at the tip part. A locking tool 9 consisting of a plurality of attachment portions 8 on which claws 7 are formed is inserted, and the attachment portions 8 are configured to lock onto the back surface of the bent portion 1a. Further, the locking groove 3 has a circular arc shape with a diameter equal to the diameter of the coil spring 4, so that the coil spring 4 protruding from the lower part of the annular groove 5 can be stably fitted therein.

In the lifting device configured as described above, the first step is to attach the hermetic compressor main body to the outer shell of the compressor.
After the coil spring 4 is fixed to the mounting hole of the compressor main body as shown in the figure, the upper end of the coil spring 4 and its vicinity are pushed into the through hole 2 of the spring hanger 1. Next, the annular groove 5 formed in the spring locking part 6 of the locking tool 9 is fitted to the upper end of the coil spring 4, and the attachment part 8 is inserted into the through hole 2 of the spring hanger 1, thereby locking the claw 7. is locked on the back side of the bent portion 1a.

Next, FIG. 6 and subsequent figures, in which the same components in FIGS. 4 and 5 are given the same reference numerals, show another embodiment. That is, FIG. 6 shows a ring-shaped locking tool 9 made of an elastic wire material, the diameter of the ring 10 is made larger than that of the through hole 2, and the locking part 6 of the coil spring 4 is formed in the upper part. and can be provided at low cost.

In FIG. 7, the outer diameter of the spring locking part 6 is set larger than the inner diameter of the coil spring 4 to lock the coil spring 4, and the lower part of the spring locking part 6 has a plurality of attachment parts 8 having claws 7. It was established.

In FIG. 8, the attachment part 8 is shaped like a pin with a claw, and a slit 11 is provided in the longitudinal direction so that the claw 7 can be deformed and easily inserted into the through hole 2.

In FIG. 9, the outer periphery of the spring locking portion 6 is tapered upward so that the coil spring 4 can be locked therein.

10 and 11 show the spring locking part 6
A large diameter portion 6a is provided at the upper part of the large diameter portion 6a.
A has a knob 6b formed thereon, and a claw 7a facing the lower end thereof to form a mounting portion 8.
On the other hand, the through hole 2 of the bent portion 1a of the spring hanger 1
Grooves 12, 12 are provided for passing the claws 7a.

The locking tool 9 configured as described above is inserted into the coil spring 4, and the claws 7a are inserted into the groove 1 of the through hole 2.
2 and 12 and then rotate the locking tool 9 by 90 degrees to prevent the coil spring 4 from coming off.

FIG. 12 is a modification of the spring locking portion 6 shown in FIGS. 10 and 11, in which the diameter of the spring locking portion 6 is larger than the inner diameter of the coil spring 4 so that the spring locking portion 6 can be locked.

In FIG. 13, a threaded portion 13 having the same pitch as that of the coil spring 4 is formed in the recessed portion of the lower surface of the spring locking portion 6, and a pin 14 is implanted in the center thereof.

To fix the coil spring 4 using the locking tool 9 configured as described above, after pushing the bent part 1a of the spring hanger 1 between the coils near the upper end of the coil spring 4, The spring locking part 6 is screwed into the upper end of the spring hanger 1, and the pin 14 is inserted into the through hole 2 of the spring hanger 1.

In FIG. 16, a threaded portion 15 of the same pitch as the coil spring 4 is provided on the outer periphery of the spring locking portion 6, and a pin 14 is provided at the bottom of the spring locking portion 6, and the same effect as in FIG. 13 is obtained. have

As explained above, since a through hole is provided in the locking part of the spring hanger and the attachment part of the locking tool for locking the coil spring is inserted into this hole to lock the coil spring, the compressor body In addition to making the lifting work of the hermetic compressor easier, there is no risk of the coil spring coming off the spring hanger if abnormal vibrations are applied to the hermetic compressor or if it is transported horizontally. There is no leakage and it has a great practical effect.

[Brief explanation of the drawing]

FIG. 1 is a vertical side view of a hermetic compressor equipped with a conventional lifting device for the main body of the hermetic compressor, and FIGS. 2 and 3 are vertical side views showing the main parts of the conventional lifting device. Fig. 4 is an exploded perspective view showing the main parts of this invention, Fig. 5 is a sectional view of the assembled state, and Figs. 6 to 16 show other embodiments of this invention, and Fig. 6 is the main part. 7 to 9 are side views of the locking device, FIG. 10 is an exploded perspective view of the main parts, FIG. 11 is a sectional view of the assembled state, and FIG. 12 is a perspective view of the locking device. , FIG. 13 is a cross-sectional view of the locking device, FIG. 14 is a cross-sectional view showing the spring hanger inserted into the coil spring, FIG. 15 is a cross-sectional view of the assembled state, and FIG. 16 is a side view of the locking device. It is. 1...Spring hanger, 1a...Bending part (locking part), 2...Through hole, 4...Coil spring,
6...Spring locking part, 8...Mounting part, 9...
Locking device.

Claims (1)

[Scope of utility model registration request] A compressor main body is held by a coil spring, and the coils of the coil spring are engaged with the engagement part of a spring hanger to suspend the compressor, in which a through hole is provided in the engagement part of the spring hanger, and a through hole is provided in the engagement part of the spring hanger. A device for lifting a hermetic compressor main body, characterized in that a locking tool having a spring locking portion that locks with a spring is provided with a mounting portion that is inserted into the through hole.