JPH10331787A - Power junction device for scroll compressor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent contact of the root parts of a cluster and a cable with the inner wall of a case without increasing a terminal mounting surface to a high value more than necessary and to facilitate insertion. SOLUTION: A seat is pressed from the internal part of a case 4 and a plane-form terminal mounting surface 16 on which a junction terminal 3 is mounted is formed. A normal extending from the center of the terminal mounting surface 16 is formed in a manner to be deviated from the center of the cylindrical case 4 and formed such that the tangential direction of the case on the side where the root part of a cable 18 is formed approximately in parallel to the terminal mounting surface 16. This constitution facilitates insertion of the cluster 17 even when the terminal mounting surface 16 is not increased and further, and contact of the end part thereof with the inner wall of the case 4 is prevented form occurring.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cluster connected to a relay terminal which contacts a case when a relay terminal of a cable for externally supplying power to a motor housed in a cylindrical case is fixed to the case. Without
The present invention relates to a power transfer device for a scroll compressor that can be easily mounted.

[0002]

2. Description of the Related Art A scroll compressor case 30 is shown in FIG.
As shown in the figure, it is formed in a cylindrical shape, and is formed with high security because the inside becomes high pressure. Then, the case 30
Parts such as a motor are housed inside.

For this reason, a cable for supplying power cannot be directly connected to a motor or the like, and the relay terminal 31 is mounted on a case 30 and power is supplied via the relay terminal 31.

FIG. 5 is a cross-sectional view for explaining a mounting state of the relay terminal 31. Note that components such as a motor provided inside are not shown in FIG.

[0005] As described above, the case 30 is formed in a cylindrical shape. In order to mount the flat relay terminal 31 on such a cylindrical surface, the terminal mounting surface is formed in a planar shape from the viewpoint of securing the work efficiency of mounting the relay terminal 31 and securing confidentiality or high pressure resistance. Is preferred.

Therefore, conventionally, a part of the cylindrical surface is pressed from the inside to form a flat portion, and the relay terminal 3 is formed there.
1 is being installed. When connecting the cable 33 on the motor side to the relay terminal 31,
This is performed by inserting the cluster 32 to which the cable 33 is connected into the terminal of the relay terminal 31.

[0007]

However, if the terminal mounting surface 34 is small, the ends of the clusters 32 may come into contact with the inner wall of the case 30 and the insertion operation may not be performed efficiently.

Of course, it is possible to enlarge the terminal mounting surface 34. However, in such a case, the layout of components such as a motor provided inside is limited, and it is difficult to ensure high withstand voltage. This is not preferable because of the problem that

The cluster 32 is connected to the relay terminal 31.
The terminal of the cable 33 connected to the cluster 32 contacts the inner wall of the case 30,
There has been a problem that the cluster 32 may come off the relay terminal 31 or cause a leakage due to vibrations or the like generated by rotation of the motor.

Accordingly, the present invention provides a power transfer device for a scroll compressor in which a root portion of a cluster or a cable is prevented from coming into contact with an inner wall of a case without making a terminal mounting surface unnecessarily large, and which can be easily inserted. It is intended to provide a device.

[0011]

According to a first aspect of the present invention, a relay terminal for relaying a power supply cable is provided on a surface of a cylindrical case. In a power relay device of a scroll compressor for supplying power to a motor in a case by inserting a cluster with a cable connected to a terminal of the scroll compressor, the case is pushed down, and a flat terminal mounting on which a relay terminal is mounted. Form a surface.

At this time, the normal extending from the center of the terminal mounting surface is deviated from the center of the cylindrical case, and the tangential direction of the case on the side where the root of the cable connected to the cluster is located. Are formed substantially parallel to the terminal mounting surface.

[0013] Thus, the mounting space of the cluster can be increased without increasing the terminal mounting surface more than necessary.
In addition to facilitating the mounting of the cluster, the end of the cluster does not contact the inner wall of the case, and the root of the cable connected to the cluster does not contact the inner wall of the case. .

According to a second aspect of the present invention, the terminal mounting surface is formed by pressing the terminal mounting surface from the inside of the case.

According to a third aspect of the present invention, the terminal mounting surface is formed by pressing the root of the cable connected to the cluster from the outside of the case and opposing the portion from the inside of the case. Features.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a diagram showing a vertical section of a scroll compressor according to the present invention.

The scroll compressor has a fixed scroll 1 and a movable scroll 2 provided with a spiral wrap, and the fixed scroll 1 and the movable scroll 2 are eccentrically combined to form a space 3 for compressing the refrigerant gas. Have been.

The fixed scroll 1 is provided at a fixed distance from the frame 5 fixed to the case 4, and the movable scroll 2 is arranged with its lower surface in contact with the frame 5.

Further, a frame 5 is provided at the center of the case 4.
And a crankshaft 8 supported by a bearing plate 7. A motor 9 is connected to the main shaft of the crankshaft 8, and the movable scroll 2 is engaged with the eccentric pin via a swing link 10.

The movable scroll 2 is provided with an Oldham ring 11 for changing the rotation of the crankshaft 8 into the revolution of the movable scroll 2.

In the Oldham ring 11, a key 12 provided on the upper surface is fitted into a key groove 13 of the movable scroll 2,
The key 14 provided on the lower surface is fitted into the key groove 15 of the frame 5 so that the movable scroll 2 revolves while the Oldham ring 11 and the movable scroll 2 move relatively while the crankshaft 8 rotates. I have.

The discharge port 23 of the spool 19 is
Spiral wrap 24 extending to the center of fixed scroll 1
And communicates with a compression space 3 formed between the wrap 24 of the fixed scroll 1 and the spiral wrap 25 of the movable scroll 2 to be combined.

Reference numeral 26 denotes a reservoir for storing a high-temperature and high-pressure refrigerant gas, reference numeral 27 denotes an inlet pipe for introducing a refrigerant gas from outside into the case 4, and reference numeral 28 denotes an outlet pipe for discharging the refrigerant gas.

The relay terminal 3 is attached to the side of the case 4. FIG. 2 is a cross-sectional view showing the mounting configuration of the relay terminal 3. In the figure, components such as a motor are not shown.

The case 4 has a flat terminal mounting surface 16 formed by being pressed from the inside, and the relay terminal 3 is mounted on the terminal mounting surface 16.

At this time, the normal line (perpendicular line) extending from the center of the terminal mounting surface 16 is shifted from the center O of the cylindrical case 4 and the root portion of the cable 18 connected to the cluster 17 is located. The tangential direction of the side is substantially parallel to the terminal mounting surface 16.

As a result, the cluster 17 can be easily inserted without increasing the size of the terminal mounting surface 16, and the end of the cluster 17 can be prevented from contacting the inner wall of the case 4. Become.

Also, since the terminal mounting surface 16 is formed to be substantially equal in the tangential direction, the cable 18
Of the cluster 17 does not come into contact with the inner wall of the case 4, the vibration of the motor 9 causes the cluster 17 to come off the terminal,
It is possible to prevent the occurrence of electric leakage or the like.

In the above description, the case where the terminal mounting surface 16 is formed by pushing the inside of the case 4 is described. However, the present invention is not limited to this. For example, as shown in FIG. The same effect can be obtained if the portion where the root of the cable 18 is located is pressed from the outside of the case 4 and the opposite portion is pressed from the inside of the case 4.

Although not particularly shown, the portion where the root of the cable 18 is located may be formed by pressing from the inside of the case 4 and the opposite portion may be formed by pressing from the outside of the case 4.

In the present embodiment, the movable scroll 2 is turned by the rotation of the crankshaft 8, and the refrigerant gas flowing into the case 4 from the inlet pipe 27 and the wrap 24 of the fixed scroll 1 and the movable scroll 2 are rotated. It is sucked into the compression space 3 between the wrap 25.

Further, when the movable scroll 2 turns,
The volume of the compression space 3 gradually decreases, and when the orbiting scroll 2 continues to turn, the volume of the compression space 3 further decreases, and the refrigerant gas inside is compressed to a high pressure.

Thereafter, the compressed gas reaches the reservoir 26 through the discharge port 23 at the center of the spool 19, and flows through the outlet pipe 28 in the upper part of the case 4 to the condenser of a unit (not shown).

[0034]

As described above, the terminal mounting surface is set so that the normal extending from the center thereof is shifted from the center of the cylindrical case, and the root portion of the cable connected to the cluster is located. Since the tangential direction of the case on the side was formed so as to be substantially parallel to the terminal mounting surface,
The cluster can be easily inserted without making the terminal mounting surface larger than necessary, and the ends and the root of the cable can be prevented from contacting the inner wall of the case. Performance and reliability can be improved, and productivity can be improved.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a scroll compressor applied to the description of an embodiment of the present invention.

FIG. 2 is a cross-sectional view of the scroll compressor showing a mounting configuration of the relay terminal.

FIG. 3 is a cross-sectional view of a scroll compressor showing a mounting configuration of a relay terminal according to another embodiment instead of FIG. 2;

FIG. 4 is an external perspective view of a scroll compressor applied to a description of a conventional technique.

FIG. 5 is a cross-sectional view of a scroll compressor showing a mounting structure of a conventional relay terminal.

[Explanation of symbols]

 3 Relay terminal 4 Case 16, 22 Terminal mounting surface 17 Cluster 18 Cable

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Toshihiko Mitsunaga 2-5-5 Keihanhondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd. (72) Inventor Toshiyuki Ehara 2-5-2 Keihanhondori, Moriguchi-shi, Osaka No. 5 Sanyo Electric Co., Ltd.

Claims (3)

[Claims] An electric power supply cable relay terminal is provided on a surface of a cylindrical case, and a power supply cable is connected to a terminal of the relay terminal to supply power to a motor in the case. In the power transfer device of a scroll compressor,
A normal line extending from the center of the terminal mounting surface, which forms a planar terminal mounting surface on which the relay terminal is mounted, is offset from the center of the cylindrical case, and the cable connected to the cluster is A power relay device for a scroll compressor, wherein a tangential direction of the case on a side where a root portion is located is substantially parallel to the terminal mounting surface. 2. The power relay device for a scroll compressor, wherein the terminal mounting surface is pressed from the inside of the case. 3. The terminal mounting surface is formed by pressing a root portion of a cable connected to the cluster from outside the case and opposing a portion from the inside of the case. A power relay device for a scroll compressor.