JPH1189153A - Electric compressor and its manufacture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily perform lead wire binding operation by bundling the middle part of a lead wire with a tape-shaped binding film, and then overlapping and sealing both the edge parts of the binding film and binding a plurality of lead wires. SOLUTION: The middle part of a lead wire 7 is bundled by a tape-shaped binding film 11, both edge parts of the binding film 11 are overlapped and are sealed each other, and then a plurality of lead wires 7 are bound. With the binding film 11, an insulation film with 1% or less oligomer, a polyethylene naphthalate(PEN) film, a polyethylene telephtharate(PET) film, or a polyphenylenesulfide(PES) film is used as a material, and its edge part is fixed by either method of adhesion due to a refrigerant-resistance adhesive such as ultrasonic wave welding, heat welding or varnish, and araldite F/hardener, thus easily binding the lead wires 7.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an electric compressor and a method for manufacturing the same.

[0002]

2. Description of the Related Art A conventional method for binding a lead wire of an electric motor built in a container of an electric compressor will be described below.
FIG. 8 is a cross-sectional view of the electric compressor when the conventional lead wire binding method of the electric motor built in the container of the electric compressor is performed. In FIG. 8, 1 is an electric compressor container, 2 is a compression mechanism, 3 is a discharge port, 4 is a suction port, 5 is a rotor, and 6 is a stator. Reference numeral 7 denotes a lead wire, and reference numeral 8 denotes a binding yarn that binds the lead wire 7. Reference numeral 9 denotes a cluster, which is electrically connected to terminals provided on the glass terminals 10.

[0003] Generally, a lead wire 7 contained in an electric compressor container is bound by a binding thread 8 or the like as shown in FIG. The purpose of binding the leads 7 in this manner is that when the leads 7 are incorporated into the electric compressor container 1, the leads 7 are separated, and some of the leads 7 come into contact with the inner wall of the electric compressor container 1, The lead wire 7 is melted by the heat generated when the container is welded, and the insulation of the motor becomes poor.
To prevent some of the lead wires 7 from coming into contact with the rotor 5 of the electric motor and being broken by the rotation of the rotor 5 due to the pressure caused by the vibration or the flow of the refrigerant during operation. .

[0004]

However, in the above-mentioned conventional construction, it is difficult to automate the process of tying the yarn, and even if it is mechanized, the equipment is complicated and expensive. When the mechanization is not performed, labor for firmly tying the yarn is required, and it is difficult for one person to continue the work for a long time, so that a plurality of people usually perform the tying work alternately. In addition, if the binding is not perfect, the yarn will be frayed and the lead wire will be separated, causing a quality problem in which the lead wire contacts the inner wall of the container of the electric compressor or contacts the rotor. Furthermore, there was a risk that the frayed yarn would enter the refrigeration cycle connected to the electric compressor and pinch the capillary tube, causing abnormalities in the refrigeration cycle.

SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems, and provides a high-quality, low-cost electric compressor which is excellent in productivity and free from problems such as poor motor insulation and lead wire disconnection. The purpose is to provide.

[0006]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a tape-like oligomer having a content of 1% at a substantially central portion of a plurality of lead wires of an electric motor built in a container of an electric compressor. The following electrical insulation film, PEN film, PE
A T film or a PPS film is wound so as to surround it, and its ends are bonded to each other by ultrasonic welding, heat welding or a refrigerant-resistant adhesive to bind the lead wires together. With the above configuration, it is possible to eliminate inconveniences in productivity and quality such as lead wire connection workability and clogging of the capillary tube.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claims 1 to 3 of the present invention relates to an electric motor having a plurality of leads incorporated in a container of an electric compressor, wherein an intermediate portion of the plurality of leads is provided. Are bundled with a tape-shaped binding film, and then the both ends of the binding film are overlapped and fixed to each other to bind the plurality of leads. Thus, the lead wire binding operation can be performed extremely easily. Has the effect that

According to a fourth aspect of the present invention, an insulating film having an oligomer content of 1% or less is used as the binding film, and has an effect that the capillary tube is hardly clogged by the extraction of the oligomer from the film.

According to a fifth aspect of the present invention, a polyethylene naphthalate (PEN) film is used as a binding film, and the capillary tube is hardly clogged due to oligomer extraction from the binding film, and is resistant to refrigerant and heat. It has the effect of being excellent.

According to a sixth aspect of the present invention, a polyethylene terephthalate (PET) film is used as the binding film, and it is difficult to cause clogging of the capillary tube due to the extraction of the oligomer from the binding film, and the refrigerant resistance and the heat resistance are improved. It has the effect of being excellent.

According to a seventh aspect of the present invention, a polyphenylene sulfide (PPS) film is used as the binding film, and the capillary tube is less likely to be clogged by the extraction of the oligomer from the binding film, and has a refrigerant resistance and a heat resistance. It has the effect of being excellent.

According to an eighth aspect of the present invention, the method of fixing the end portion of the binding film is performed by ultrasonic welding, and the end portion of the binding film is easily and firmly fixed without using a special material. Has the effect of being able to

According to a ninth aspect of the present invention, the method for fixing the ends of the binding film is performed by heat welding, and the ends of the binding film are fixed easily and firmly without using a special material. It has the effect of being able to.

According to a tenth aspect of the present invention, the method of fixing the ends of the binding film is performed by bonding with an adhesive having a refrigerant resistance, and the ends of the binding film can be fixed without requiring large-scale equipment. It has the effect that it can be fixed.

[0015]

Embodiments of the present invention will be described below with reference to the drawings.

(Embodiment 1) FIG. 1 is a sectional view showing a configuration of an electric compressor according to an embodiment of the present invention, FIG. 2 is an enlarged perspective view of a lead wire binding portion, and FIG. 3 is a sectional view of a lead wire binding portion. It is. 1, 2 and 3, reference numeral 2 denotes a compression mechanism for compressing the refrigerant by a pump action. Reference numeral 6 denotes a stator on which a stator winding is applied, which generates a rotating magnetic field when electricity is supplied to the stator winding. Reference numeral 5 denotes a rotor which is rotated by a rotating magnetic field generated by the stator 6 and is connected to the compression mechanism 2 to drive the compression mechanism 2. Reference numeral 7 denotes a lead wire having one end electrically connected to the stator winding end of the stator 6 and the other end electrically connected to the cluster 9. Reference numeral 11 denotes a binding tape that binds the plurality of lead wires 7. Reference numeral 1 denotes an electric compressor container 1 that hermetically stores the compression mechanism 2, the rotor 5, the stator 6, the lead wire 7, the binding film 11, and the cluster 9. An electric compressor container 1 is electrically connected to a discharge port 3 for discharging the compressed refrigerant to the refrigeration cycle and a cluster 9 by a suction port 3 for sucking refrigerant from a refrigeration cycle (not shown) and a compression mechanism 2. A glass terminal 10 having a terminal exposed to the outside of the electric compressor container 1 is provided.

The binding film 11 is made of an insulating film having an oligomer content of 1% or less, a PEN film, a PET film.
Either film or PPS film is used,
The ends 11a are fixed to each other by any one of ultrasonic welding, heat welding, and bonding with a varnish, a refrigerant resistant adhesive such as Araldite F / hardener.

With the above configuration, there is a problem in the case where the thread 8 is used to bind the plurality of lead wires 7 of the electric motor built in the container of the electric compressor according to the prior art shown in FIGS. 6 and 8. If the binding of the yarn 8 is not perfect, the yarn 8 is frayed and the lead wire 7 is separated, and the quality problem that the lead wire 7 comes into contact with the inner wall of the electric compressor container 1 and the rotor 5 and that the frayed yarn 8 is compressed A high-quality lead is obtained by entering a refrigeration cycle (not shown) connected to the discharge port 3 and the suction port 4 from the mechanism 2 and pinching a capillary tube (not shown) to cause an abnormality in the refrigeration cycle. An electric compressor employing a wire binding method can be provided.

(Embodiment 2) FIG. 4 is a perspective view of a binding portion of a plurality of lead wires 7 built in an electric compressor container, and FIG. 5 is a sectional view of a binding portion of the lead wires. 4 and 5, a substantially central portion of the plurality of lead wires 7 is sandwiched between two tape-shaped binding films 12 to form a binding film 1.
The lead wires 7 are bound together by overlapping both ends and fixing them in a tube shape. An insulating film having an oligomer content of 1% or less, or PE
Since the N film, PET film and PPS film are used, the amount of extracted oligomer is small, and the capillary tube (not shown) existing in the refrigeration cycle (not shown) connected from the discharge port 3 to the suction port 4 is pinched. I will not let you.

With the above configuration, there is a problem in the case where the thread 8 is used to bind the plurality of lead wires 7 of the electric motor built in the container of the electric compressor according to the prior art shown in FIGS. If the binding of the yarn 8 is not complete, the yarn 8 is frayed and the lead wire 7 is separated, and the quality of the lead wire 7 contacting the inner wall 1 and the rotor 5 of the electric compressor and the quality of the frayed yarn 8 are reduced. An electric compressor that employs a high-quality bundling method for lead wires by solving the problem of causing an abnormality in the refrigeration cycle by entering the refrigeration cycle connected to the discharge port 3 and the suction port 4 from the mechanism 2 and pinching the capillary tube. Can be provided.

[0021]

As described above, according to the first to third aspects of the present invention, the intermediate portion of the lead wire is bound with a tape-shaped binding film, and then both ends of the binding film are overlapped and fixed to each other. By doing so, by binding the plurality of lead wires, it is possible to obtain an effect that the lead wire binding operation can be performed extremely easily.

According to the fourth aspect of the present invention, since an insulating film having an oligomer content of 1% or less is used for the binding film, an effect is obtained that the capillary tube is hardly clogged by the extraction of the oligomer from the film.

According to the fifth aspect of the present invention, since the polyethylene naphthalate (PEN) film is used as the binding film, the capillary tube is hardly clogged by the oligomer extraction from the binding film, and the refrigerant resistance and the heat resistance. Is obtained.

According to the sixth aspect of the present invention, since the polyethylene terephthalate (PET) film is used as the binding film, the capillary tube is hardly clogged by the extraction of the oligomer from the binding film, and the refrigerant resistance and the heat resistance are improved. The effect of being excellent is obtained.

According to the seventh aspect of the present invention, since a polyphenylene sulfide (PPS) film is used as the binding film, the capillary tube is hardly clogged due to the extraction of the oligomer from the binding film, and the refrigerant resistance and heat resistance are reduced. The effect of being excellent is obtained.

According to the eighth aspect of the present invention, since the method for fixing the ends of the binding film is ultrasonic welding, the ends of the binding film can be fixed easily and firmly without using any special material. The effect is obtained.

According to the ninth aspect of the present invention, since the method for fixing the ends of the binding film is heat welding, the ends of the binding film can be fixed easily and firmly without using any special material. The effect that it can be obtained is obtained.

According to the tenth aspect of the present invention, the end of the binding film is fixed to the end of the binding film by using an adhesive having a refrigerant resistance, thereby eliminating the need for a large-scale facility. Can be fixed.

[Brief description of the drawings]

FIG. 1 is a sectional view of an electric compressor according to Embodiment 1 of the present invention.

FIG. 2 is a perspective view of the lead wire binding portion.

FIG. 3 is a cross-sectional view of the lead wire binding portion.

FIG. 4 is a perspective view of a lead wire binding portion according to a second embodiment of the present invention.

FIG. 5 is a sectional view of the lead wire binding portion.

FIG. 6 is a perspective view of a conventional lead wire binding portion.

FIG. 7 is a sectional view of a conventional lead wire binding portion.

FIG. 8 is a sectional view of a conventional electric compressor.

[Explanation of symbols]

 Reference Signs List 5 rotor 6 stator 7 lead wire 11, 12 binding film

 ──────────────────────────────────────────────────の Continued on the front page (72) Inventor Shinichi Okuyama 1006 Kazuma Kadoma, Osaka Prefecture Matsushita Electric Industrial Co., Ltd.

Claims (10)

[Claims] 1. An electric motor having a plurality of leads incorporated in a container of an electric compressor, wherein an intermediate portion of the plurality of leads is bound with a tape-shaped binding film, and then an end of the binding film is provided. A method for manufacturing an electric compressor, wherein the plurality of lead wires are bound by overlapping and fixing the portions. 2. A single binding film surrounds an intermediate portion of the plurality of lead wires so as to be bound, and thereafter, the both ends of the one binding film are overlapped and fixed to each other to thereby form the plurality of leads. The method for manufacturing an electric compressor according to claim 1, wherein the wires are bound. 3. A bundling film sandwiching the intermediate portions of the plurality of lead wires from both sides with two binding films and then binding the lead wires.
The method for manufacturing an electric compressor according to claim 1, wherein the plurality of lead wires are bound by overlapping and fixing both ends of a single binding film. 4. An electric compressor manufactured by the manufacturing method according to claim 1, wherein the binding film has an oligomer content of 1%.
% Of an electric insulating film using an electric insulating film of not more than 10%. 5. An electric compressor manufactured by the method according to claim 1, wherein a polyethylene naphthalate (PEN) film is used as a binding film. 6. An electric compressor manufactured by the method according to claim 1, wherein a polyethylene terephthalate (PET) film is used as a binding film. 7. An electric compressor manufactured by the manufacturing method according to claim 1, wherein a polyphenylene sulfide (PPS) film is used as a binding film. 8. The method for manufacturing an electric compressor according to claim 1, wherein the method of fixing the ends of the binding film is ultrasonic welding. 9. The method for manufacturing an electric compressor according to claim 1, wherein the method of fixing the ends of the binding film is heat welding. 10. A method for fixing an end of a binding film, comprising:
The method for manufacturing an electric compressor according to claim 1, wherein the bonding is performed by an adhesive having a refrigerant resistance.