JP2005163575A - Enclosed electric compressor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a compressor provided with high quality and enabling a cluster to be vertically inserted and fixed to the hermetic terminal without extending assembly cycle time. <P>SOLUTION: The cluster 130 abuts on a flange part of a hermetic terminal 112 at a plurality of portions facing on both side of a terminal pin 124 of the cluster 130 when the cluster 130 is inserted in the terminal pin 124. Since positioning of the cluster 130 is made easy, an operator can vertically insert and fix the cluster 130 in the hermetic terminal 112. A terminal 134 of the cluster 130 is not deformed and retention under a wrenched condition is prevented, and drop of retention force in reassembly can be prevented. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an improvement of a cluster used in a hermetic electric compressor (hereinafter referred to as a compressor).

  Conventionally, this type of compressor is generally equipped with a cluster connected to an electric element on a hermetic terminal for electrically connecting the inside and outside of a sealed container. (For example, refer to Patent Document 1).

  The conventional compressor will be described below with reference to the drawings.

  7 is a cross-sectional view of a conventional hermetic electric compressor described in Patent Document 1, FIG. 8 is an enlarged view of a main part of the conventional hermetic electric compressor, and FIG. 9 is a view from the direction of arrow C in FIG. FIG. 10 is an attachment state diagram showing an attachment state of a conventional hermetic electric compressor.

  7 to 10, the sealed container 1 is formed of an upper container 2 and a lower container 3 formed by drawing a steel plate. In the sealed container 1, the electric element 6 and the compression element 11 driven by the electric element 6 are elastically held by a plurality of springs 10. The electric element 6 includes a stator 8 and a rotor 9 provided with a winding 7.

  The hermetic container 1 includes a hermetic terminal 12 that electrically communicates the inside and outside of the container. The hermetic terminal 12 includes a substantially cup-shaped main body 20 formed of a flange portion 15 and a bottom surface portion 16, and three terminal pins 24 that are penetrated and fixed to the bottom surface portion 16 through a glass insulator 22. Yes. A flange portion 15 is airtightly fixed to the sealed container 1 from the inside by resistance welding.

  A cluster 30 is detachably attached to the inside of the hermetic container 1 of the hermetic terminal 12. The cluster 30 is formed of three terminals 34 corresponding to the three terminal pins 24 and a housing 36 that accommodates the terminals 34. The winding 7 of the stator 8 and the terminal 34 are connected by a lead wire 40.

  The housing 36 is formed of an insulating resin material, is long in the direction of the lead wire 40 led out downward, and the lower end portion 37 overhangs from the outer peripheral diameter of the flange portion 15. On the other hand, the upper end portion 38 of the housing 36 is inside the outer peripheral diameter of the flange portion 15.

  The operation of the compressor configured as described above will be described below.

  By supplying electricity from the hermetic terminal 12 to the electric element 6 through the cluster 30, the compression element 11 is driven to perform a compression operation. The mechanical vibration generated from the compression element 11 at this time is blocked from the sealed container 1 by the spring 10.

  Next, the process of assembling the compressor will be described.

  The hermetic terminal 12 is fixed to the lower container 3 in an airtight manner by fixing the flange portion 15 to the lower container 3 in advance from the inside thereof by resistance welding.

  Next, the electric element 6 and the compression element 11 are assembled together in advance and loaded into the lower container 3 via the spring 10, the cluster 30 is attached inside the hermetic terminal 1 of the hermetic terminal 12, and the upper container 2 is attached to the lower container 3. 3 and weld all around the joint.

The cluster 30 is inserted and fixed to the hermetic terminal 12 by inserting three corresponding terminals 34 into the three terminal pins 24 by the manual operation of a normal operator.
JP 2003-42064 A

  However, in the conventional configuration, as shown in FIG. 10, when the cluster 30 is inserted and fixed to the hermetic terminal 12, the lower end portion 37 of the housing 36 overhangs from the outer peripheral diameter of the flange portion 15. The portion 37 is brought into contact with the flange portion 15 to obtain a predetermined insertion depth. On the other hand, since the upper end portion 38 of the housing 36 is inside the outer peripheral diameter of the flange portion 15, it is inclined when the operator strongly inserts it. It was sometimes plugged in.

  The inclination is such that when the hermetic terminal having three terminal pins arranged on the rotation object is fixed to the lower container of the sealed container, the force inserted by the operator is one upper terminal pin. In many cases, it was inserted in a more inclined state.

  As a result, the terminal pin 24 is deformed due to this inclination, or the terminal 34 is deformed due to the occurrence of a twist between the terminal pin 24 and the terminal 34. When the terminal 34 is inserted / removed again, the gripping force is reduced and detached during transportation. There was a problem of causing poor connection.

  In addition, in order to avoid such a tilting insertion, the operator makes an insertion allowance by visual observation, and as a result, there is a problem that the manufacturing cycle time becomes long.

  The present invention solves the above-described conventional problems, and can provide a compressor having high quality in which a cluster can be inserted and fixed vertically to a hermetic terminal without extending the assembly cycle time.

  In order to solve the above conventional problems, the compressor of the present invention, when the cluster is inserted into the terminal pin, comes into contact with the flange portion of the hermetic terminal at a plurality of locations where the cluster is opposed across the terminal pin. The operator can easily position the cluster, and the cluster can be inserted and fixed vertically to the hermetic terminal. As a result, the terminal can be prevented from being deformed or held in a state of being twisted.

  In the compressor according to the present invention, when the cluster is mounted on the hermetic terminal, the cluster comes into contact with the flange portion at a plurality of locations opposed to each other with the plurality of terminal pins interposed therebetween, so that the cluster is a hermetic terminal. Thus, a compressor having high quality can be provided without extending the assembly cycle time.

  According to the first aspect of the present invention, an electric element and a compression element driven by the electric element are accommodated in a sealed container, fixed to the sealed container, and attached to the bottom surface portion of the main body including a flange portion and a bottom surface portion. A hermetic terminal having a plurality of terminal pins which are fixed through through a glass insulator, a cluster which is locked to the plurality of terminal pins in the sealed container and stores a plurality of terminals, the terminal and the electric element And when the cluster is mounted on the hermetic terminal, the cluster abuts on the flange portion at a plurality of locations facing each other with the plurality of terminal pins interposed therebetween. The operator can easily position the cluster and insert the cluster perpendicular to the hermetic terminal without increasing the assembly cycle time. Constant can, as a result can be deformed terminal, and it is possible to prevent the held in a state in which pry, it is possible to provide a compressor having a high quality.

  According to a second aspect of the present invention, in the first aspect, the lead wire is led out from below the cluster, and the insulating sheet is wider than the outer periphery of the flange portion and interposed between the lead wire and the sealed container. When the cluster is inserted into the hermetic terminal with the material sandwiched between the flanges, the entire circumference of the flange can be sealed when the cluster sandwiches the insulation sheet, preventing the entry of carbide into the hermetic terminal and high quality. A compressor provided can be provided.

  The invention described in claim 3 is the invention according to claim 1 or 2, wherein a hermetic terminal having three terminal pins arranged in a triangular shape having one side in the horizontal direction is fixed to a lower container of a sealed container. Even though the force inserted by the operator works strongly on one terminal pin located on a side other than one side in the horizontal direction, the cluster abuts the flange portion at a plurality of locations facing each other across the plurality of terminal pins. This makes it easy for the operator to position the cluster and inserts and fixes the cluster vertically to the hermetic terminal without extending the assembly cycle time, resulting in the terminal being deformed or held in a strained state. Therefore, it is possible to provide a compressor having high quality.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. The present invention is not limited to the embodiments.

(Embodiment 1)
FIG. 1 is a cross-sectional view of a compressor in Embodiment 1 of the present invention, FIG. 2 is an enlarged view of a main part in the embodiment, and FIG. 3 is an arrow view from the direction of arrow A in FIG. 1 to 3, the sealed container 101 is formed of an upper container 102 and a lower container 103 formed by drawing a steel plate.

  In the sealed container 101, the electric element 106 and the compression element 111 driven by the electric element 106 are elastically held by a plurality of springs 110.

  The electric element 106 includes a stator 108 with a winding 107 and a rotor 109.

  The lower container 103 includes a hermetic terminal 112 that electrically connects the inside and outside of the container. The hermetic terminal 112 includes a substantially cup-shaped main body 120 formed of a flange portion 115 and a bottom surface portion 116, and three terminal pins 124 that are fixed to the bottom surface portion 116 through a glass insulator 122. These three terminal pins are arranged in a triangular shape having one side in the horizontal direction. The flange 115 is airtightly fixed from the inside of the lower container 103 by resistance welding.

  A cluster 130 is detachably attached inside the hermetic terminal 1 of the hermetic terminal 112. The cluster 130 is formed of three terminals 134 corresponding to the three terminal pins 124 and a housing 136 that accommodates the terminals 134, and a lead wire 140 is provided between the winding 107 of the stator 108 and the terminals 134. Connected by.

  The housing 136 is formed of an insulating resin material, is long in the direction of the lead wire 140 led out downward, and the lower end portion 137 is overhanging from the outer peripheral diameter of the flange portion 115, and the upper end of one housing 136 is In this portion, a rib 150 overhanging from the outer peripheral diameter of the flange portion 115 is provided.

  The operation of the compressor configured as described above will be described below.

  When electricity is supplied from the hermetic terminal 112 to the electric element 106 through the cluster 130, the compression element 111 is driven to perform a compression operation. The mechanical vibration generated from the compression element 111 at this time is blocked from the sealed container 101 by the spring 110.

  Next, the process of assembling the compressor will be described.

  The hermetic terminal 112 is airtightly fixed to the lower container 103 by fixing the flange portion 115 to the lower container 103 from the inner side in advance by resistance welding.

  Next, the electric element 106 and the compression element 111 are assembled together in advance and loaded into the lower container 103 via the spring 110, and the cluster 130 is inserted inside the hermetic terminal 101 of the hermetic terminal 112.

  The operation of inserting the cluster 130 is normally performed manually by an operator, and the operator inserts his hand between the electric element 106 and the compression element 111 assembled in advance and the lower container 103 to hold the cluster 130. Then, by inserting three corresponding terminals 134 into the three terminal pins 124, the cluster 130 is inserted and fixed inside the hermetic container 101 of the hermetic terminal 112.

  Thereafter, the upper container 102 is fitted into the lower container 103, and the joint is welded all around.

  In the process of assembling the compressor as described above, when the cluster 130 is inserted and fixed to the hermetic terminal 112, the lower end portion 137 extends from the outer peripheral diameter of the flange portion 115, and the upper end rib 150 of one housing 136. Is outside the outer peripheral diameter of the flange portion 115, and when inserted, the cluster 130 is substantially perpendicular to the terminal pin 124 without tilting by inserting until inserting at a plurality of locations facing each other across the terminal pin 124. Placed in. As a result, the terminal 134 is also arranged perpendicular to the terminal pin 124, the terminal 134 is not deformed, and even when the cluster 130 is inserted into and removed from the hermetic terminal 112, the gripping force is reduced and does not come off during transportation.

  In addition, the operator has conventionally determined the insertion allowance visually, but it may be pushed in until the cluster 130 comes into contact with the hermetic terminal 112, so that the operator can easily perform the positioning operation, resulting in the manufacturing cycle time Is shortened.

  As described above, according to the present embodiment, a hermetic electric compressor having high productivity and high quality can be obtained even when the plug is inserted and removed without lowering the gripping force and coming off during transportation.

(Embodiment 2)
4 is a cross-sectional view of the compressor according to the first embodiment of the present invention, FIG. 5 is an enlarged view of a main part in the same embodiment, and FIG. 6 is an arrow view from the direction B of FIG.

  Hereinafter, the second embodiment will be described with reference to FIGS. Note that the same components as those in the first embodiment are denoted by the same reference numerals and detailed description thereof is omitted.

The sealed container 101 is formed of an upper container 102 and a lower container 103 formed by drawing a steel plate. In the sealed container 101, the electric element 106 and the compression element 111 driven by the electric element 106 are elastically held by a plurality of springs 110.
The electric element 106 includes a stator 108 with a winding 107 and a rotor 109.

  The lower container 103 is provided with a hermetic terminal 112 for electrically connecting the inside and outside of the container.

  The hermetic terminal 112 includes a substantially cup-shaped main body 120 formed of a flange portion 115 and a bottom surface portion 116, and three terminal pins 124 that are fixed to the bottom surface portion 116 through a glass insulator 122. These three terminal pins are arranged in a triangular shape having one side in the horizontal direction. The flange 115 is airtightly fixed from the inside of the lower container 103 by resistance welding.

  A cluster 130 is detachably attached inside the hermetic terminal 1 of the hermetic terminal 112. The cluster 130 is formed of three terminals 134 corresponding to the three terminal pins 124 and a housing 136 that accommodates the terminals 134, and a lead wire 140 is provided between the winding 107 of the stator 108 and the terminals 134. Connected by.

  The housing 136 is formed of an insulating resin material, is long in the direction of the lead wire 140 led out downward, and the lower end portion 137 is overhanging from the outer peripheral diameter of the flange portion 115, and the upper end of one housing 136 is In this portion, a rib 150 overhanging from the outer peripheral diameter of the flange portion 115 is provided.

  Between the cluster 130 and the hermetic terminal 112, an insulating sheet 160 that is wider than the outer periphery of the flange portion 105 and extends between the lead wire 140 and the sealed container 101 is provided. The insulating sheet 160 is formed of a PET film or the like, and is provided with corresponding holes in the three terminal pins 124, and is sandwiched between the housing 136 and the flange portion 115 of the hermetic terminal.

  The operation of the compressor configured as described above will be described below.

  When electricity is supplied from the hermetic terminal 112 to the electric element 106 through the cluster 130, the compression element 111 is driven to perform a compression operation. The mechanical vibration generated from the compression element 111 at this time is blocked from the sealed container 101 by the spring 110.

  Further, the lead wire 140 is also vibrated at the same time due to mechanical vibration during the compression operation, but contact with the lower container 103 is prevented by the insulating sheet 160 extending between the airtight container 101.

  Next, the process of assembling the compressor will be described.

  The hermetic terminal 112 is airtightly fixed to the lower container 103 by fixing the flange portion 115 to the lower container 103 from the inner side in advance by resistance welding.

  Next, the electric element 106 and the compression element 111 are assembled together in advance and loaded into the lower container 103 via the spring 110.

  Next, the insulating sheet 160 and the cluster 130 are sequentially inserted into the hermetic terminal 112 inside the hermetic container 101.

  The operation of inserting the insulating sheet 160 and the cluster 130 is normally performed manually by an operator, and the operator inserts his / her hand between the electric element 106 and the compression element 111 assembled in advance and the lower container 103. After the insulating sheet 160 is inserted inside the hermetic container 101 of the hermetic terminal 112, the cluster 130 is held, and the three terminals 134 corresponding to these are inserted into the three terminal pins 124 so that the hermetic terminal 160 is inserted. The cluster 130 is inserted and fixed inside the sealed container 101 of the terminal 112.

  Thereafter, the upper container 102 is fitted into the lower container 103, and the joint is welded all around.

  In the process of assembling the compressor as described above, when the cluster 130 is inserted and fixed to the hermetic terminal 112, the lower end portion 137 overhangs from the outer peripheral diameter of the flange portion 115, and the upper end rib of one housing 136 is 150 is outside the outer peripheral diameter of the flange portion 115, and when inserted, it is inserted until it abuts at a plurality of locations facing each other across the terminal pin 124. Arranged vertically. As a result, the terminal 134 is also arranged perpendicular to the terminal pin 124, the terminal 134 is not deformed, and even when the cluster 130 is inserted into and removed from the hermetic terminal 112, the gripping force is reduced and does not come off during transportation.

  In addition, the operator has conventionally determined the insertion allowance visually, but it is only necessary to push in until the cluster 130 comes into contact with the hermetic terminal 112, so that the operator can easily perform the positioning operation, and as a result, the manufacturing cycle time Is shortened.

  Further, an insulating sheet 160 that is wider than the outer periphery of the flange portion 105 and extends between the lead wire 140 and the sealed container 101 is provided between the cluster 130 and the hermetic terminal 112. When inserting and fixing to the terminal 112, the lower end 137 overhangs from the outer peripheral diameter of the flange 115, and the rib 150 at the upper end of one housing 136 is outside the outer peripheral diameter of the flange 115 and is inserted. At this time, the insulating sheet 160 is firmly pressed against the flange portion 115 by the lower end portion 137 and the rib 150 by inserting until abutting at a plurality of locations facing each other across the terminal pin 124, whereby the insulating sheet 160 and the flange portion 115 are pressed. Can be tightly closed and the entire periphery of the open end of the flange 115 can be closed by the insulating sheet 160.

  As a result, metal abrasion powder, carbides generated by compression heat generation, etc., are less likely to enter the inside of the flange portion 115, and can be prevented from being adsorbed near the glass insulator 122. Occurrence of insulation failure between the terminal pin 124 and the main body 120 can be prevented in advance, and a compressor having high quality can be provided.

  As described above, according to the present embodiment, even when the connector is inserted and removed, the gripping force does not decrease and does not come off during transportation, and the insulation between the terminal pins 124 or between the terminal pins 124 and the main body 120 is poor. The hermetic electric compressor with high productivity and high quality can be obtained.

  As described above, the compressor according to the present invention can insert and fix the cluster vertically to the hermetic terminal, and can provide a compressor with high quality without extending the assembly cycle time. It can also be applied to applications such as showcases and dehumidifiers.

Cross-sectional view in Embodiment 1 of the present invention The principal part enlarged view in Embodiment 1 of this invention Arrow view from direction A of FIG. 2 in Embodiment 1 of the present invention Cross-sectional view in Embodiment 2 of the present invention The principal part enlarged view in Embodiment 2 of this invention The arrow view from the B direction of FIG. 5 in Embodiment 2 of this invention Cross-sectional view of a conventional hermetic electric compressor Enlarged view of the main parts of a conventional hermetic electric compressor Arrow view from direction C of FIG. 8 of a conventional hermetic electric compressor Installation state diagram of a conventional hermetic electric compressor

Explanation of symbols

DESCRIPTION OF SYMBOLS 101 Airtight container 103 Lower container 106 Electric element 111 Compression element 112 Hermetic terminal 115 Flange part 116 Bottom face part 120 Main body 122 Glass insulator 124 Terminal pin 130 Cluster 134 Terminal 137 Lower end part 140 Lead wire 160 Insulation sheet

Claims (3)

An electric element and a compression element driven by the electric element are housed in a sealed container, fixed to the sealed container, and fixed to the bottom surface portion of the main body composed of a flange portion and a bottom surface through a glass insulator. A hermetic terminal including a plurality of terminal pins, a cluster that is locked to the plurality of terminal pins in the sealed container and stores a plurality of terminals, and a lead wire that connects the terminal and the electric element. In addition, when the cluster is mounted on the hermetic terminal, the hermetic type electric compressor in which the cluster contacts the flange portion at a plurality of locations facing each other with the plurality of terminal pins interposed therebetween. The hermetic seal according to claim 1, wherein the lead wire is led out from below the cluster, and is wider than the outer periphery of the flange portion, and an insulating sheet interposed between the lead wire and the sealed container is sandwiched between the flange portion and the cluster. Type electric compressor. 3. The hermetic electric compressor according to claim 1, wherein a hermetic terminal having three terminal pins arranged in a triangular shape having one side in the horizontal direction is fixed to a lower container of the hermetic container.

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