JP3731109B2 - Power supply terminal structure and compressor equipped with the same - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a power terminal structure and a compressor including the same.
[0002]
[Prior art]
Conventionally, there is a power supply terminal structure of a compressor of a refrigerator as shown in FIG. This power terminal structure 101 is attached to a compressor casing formed by sealing a compressor that compresses refrigerant of a refrigerator and a three-phase motor that drives the compressor, and is attached to the power terminal main body 102. The three terminals 103, 103, 103 connected to the three-phase motor are fixed. The terminal 103 includes a pin portion 103a and a plate portion 103b. A flat sleeve-shaped flag terminal 106 having a lead wire 105 fixed to one end is fitted to the plate portion 103b of the terminal 103, and the terminal 103 and the lead wire 105 are connected. The flag-type terminal 106 is fixed to the lead wire 105 at a right angle, and has a slit-like notch on the flat surface on the right side when viewed from the lead wire 105, and this notch is used as a pin portion of the terminal 103. It fits in the plate part 103b toward 103a. The lead wires 105, 105, 105 are connected to a power circuit (not shown) and supply power to the three-phase motor. The power supply terminal structure 101 includes a case 107 that covers the main body 102 and the terminals 103, 103, 103, and 103. The lead wires 105, 105, and 105 are connected through openings 108 provided below the case 107. It is pulled out of the power terminal structure.
[0003]
FIG. 5 is a diagram showing a power supply terminal structure 110 provided in a compressor having a three-phase brushless motor. This power supply terminal structure 110 further includes a terminal connected to a sensor for detecting the phase of the rotor of the three-phase brushless motor, and has four terminals 111, 111, 111, 111. The terminals 111, 111, 111, 111 are arranged at equal intervals around the center of the power supply terminal main body 112 and with the plate portion 111 b of the terminal 111 facing outward. As with the terminal 103 shown in FIG. 4, the terminal 111 is composed of a pin portion 111a and a plate portion 111b. The flag portion terminal 115 connected to the lead wire 114 is fitted into the plate portion 111b, and The terminal 111 and the lead wire 114 are connected. The power supply terminal structure 110 also includes a case 117 that covers the periphery of the power supply terminal main body 112, and the lead wires 114, 114, 114, 114 are drawn out of the power supply terminal structure 110 from an opening 118 below the case 117. ing. Note that the terminals 111, 111, 111, 111 are arranged so that the line connecting the two terminals 111, 111 facing in the vertical direction in FIG. 5 intersects at right angles to the plane including the opening 118 of the case 117. Has been.
[0004]
[Problems to be solved by the invention]
However, in the conventional power supply terminal structure 110, the flag-type terminal 115 fitted to the plate portion 111b of the terminal 111 is standardized only in a type in which a notch is provided on the right flat surface when viewed from the lead wire 114. Absent. In addition, the rightmost terminal 111 in FIG. 5 is disposed so that the plate portion 111b included in the terminal 111 is located on the right side and intersects the plane including the opening 118 of the case 117 at a right angle. When the flag terminal 115 is connected to the terminal 111, the fixed portion between the terminal 111 and the lead wire 114 is positioned above the terminal 111. Therefore, in order to pull out the lead wire 114 from the opening 118 of the case 117, the lead wire 114 needs to be bent approximately 180 degrees above the terminal 111 and directed toward the opening 118. As a result, there is a problem that the lead wire 114 is easily disconnected at the bent portion. In addition, there is a problem that the coating of the lead wire 114 may be broken at the bent portion, and the circuit to which the lead wire 114 is connected may be short-circuited. Furthermore, since the lead wire 114 is bent approximately 180 degrees, there is a problem that the work of handling the lead wire 114 is troublesome.
[0005]
SUMMARY OF THE INVENTION An object of the present invention is to provide a power supply terminal structure in which a lead wire connected to a terminal can be pulled out from an opening of a cover without being bent greatly.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, the power supply terminal structure of the invention of claim 1 is characterized in that four terminals consisting of a pin portion and a plate portion are provided on the main body at substantially equal intervals in the circumferential direction, and the plate portion is disposed outside. In the power supply terminal structure in which the case is provided so as to be detachably attached to the main body, the case covering the terminal and having an opening in one circumferential direction,
The four terminals are terminals that are connected so that the flag-type terminal and the lead wire face the same direction of the circumference with respect to the flag-type terminal,
The opening of the case is an opening for pulling out the lead wire to the outside,
A line connecting the two terminals facing each other is characterized by intersecting obliquely with respect to a plane including the opening of the case.
[0007]
According to the power supply terminal structure of the first aspect, the terminals composed of the pin portion and the plate portion are arranged at substantially equal intervals in the circumferential direction, and the plate portion is positioned outside. Further, the terminals are arranged on the main body so that a line connecting the two terminals facing each other obliquely intersects a plane including the opening of the case. If it does so, the board part of the said terminal will face in the diagonal direction with respect to the plane containing the opening of the said case. The plate portion of the terminal, when fitting the flag type terminal secured to the end portion of the lead wire, the lead wire is oriented in a direction oblique to the plane containing the opening of the case. Therefore, the lead wire does not need to be bent greatly in order to pull out from the opening of the case. As a result, disconnection or short circuit of the lead wire is prevented. Further, since the lead wire does not need to be greatly bent, the lead wire can be easily handled.
[0008]
A power supply terminal structure according to a second aspect of the present invention is characterized in that, in the power supply terminal structure according to the first aspect, a line connecting the two opposing terminals intersects at approximately 45 ° with respect to a plane including the opening.
[0009]
According to the power supply terminal structure of claim 2, since the terminal is arranged in the main body so that the line connecting the two opposing terminals intersects at approximately 45 ° with respect to the plane including the opening, When the flag-type terminal is connected, the lead wire led from the flag-type terminal also forms approximately 45 ° with respect to the plane including the opening. Therefore, the bending of the lead wire can be reduced.
[0010]
According to a third aspect of the present invention, there is provided a compressor in which a compressor that compresses a refrigerant and a motor that drives the compressor are housed in a casing.
In the compressor casing,
Four terminals consisting of a pin portion and a plate portion are provided on the main body at substantially equal intervals in the circumferential direction and the plate portion is located on the outer side. A power supply terminal structure is provided in which a case having an opening in one direction is detachably attached. The four terminals include a flag-type terminal and a lead wire, and the lead wire has a circumferential shape with respect to the flag-type terminal. It is a terminal connected so as to face the same direction, the opening of the case is an opening for drawing out the lead wire to the outside, and the line connecting the two terminals facing each other is connected to the power terminal structure The structure is characterized in that it is configured to cross obliquely with respect to a plane including the opening of the case, and the opening is disposed downward.
[0011]
According to the compressor of claim 3, in the power terminal structure provided in the compressor, when the flag type terminal is connected to the terminal, the lead wire is pulled out from the opening of the case to pull out the lead wire of the flag type terminal. Since it is not necessary to bend greatly, disconnection or short circuit of the lead wire is prevented. Further, since the opening of the case is arranged so as to face downward, dust and water droplets hardly enter the case, and the terminal is hardly short-circuited by dust or water droplets. Therefore, the compressor provided with this power supply terminal structure is prevented from troubles due to disconnection or short circuit, and the performance becomes stable and safe.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described in detail with reference to the illustrated embodiments.
[0013]
FIG. 1 is a front view showing a power terminal structure 1. In the power supply terminal structure 1, four terminals 5, 5, 5, and 5 are arranged on a substantially circular power supply terminal main body 2 at equal intervals on the circumference of a concentric circle of the main body 2. The terminal 5 includes a pin portion 5a protruding from the main body 2 and a plate portion 5b fixed to the peripheral surface of the pin portion 5a. The terminal 5 has a circumference on which the terminals 5, 5, 5, and 5 are arranged. It arrange | positions with the said board part 5b facing outside. A case 6 that covers the terminals 5, 5, 5, and 5 is attached around the body 2, and an opening 7 is provided on the lower surface of the case 6 in FIG. 1. The terminals 5, 5, 5, and 5 are approximately 45 degrees with respect to the straight line 52 that is drawn between the two facing terminals 5 and 5 and that is parallel to the plane including the opening 7. Are arranged so as to form an angle α. In other words, the plate portion 5b of the terminal forms an angle of about 45 degrees with respect to the surface including the opening 7.
[0014]
As shown in the cross-sectional view of FIG. 2, the power terminal structure 1 is attached to a casing 11 of a compressor. Further, the power supply terminal structure 1 includes an inner terminal 12 that is connected to the terminal 5 and protrudes to the inner side of the casing 11 in an inner portion of the casing 11 of the main body 2. The inner terminal 12 is connected to a motor (not shown) for driving a compression unit (not shown) disposed in the casing 11 and the terminal 5 is connected to a power supply circuit and a control circuit (not shown) to control the motor. Drive as possible.
[0015]
In the power supply terminal structure 1 having the above configuration, the lead wires 15, 15, 15, and 15 connected to the power supply circuit and the control circuit are connected to the terminals 5, 5, 5, and 5, respectively. A flag-type terminal 16 as shown in the perspective view of FIG. 3 is fixed to the end of the lead wire 15. The flag-shaped terminal 16 has a lead wire 15 connected to the upper end of the flag-shaped terminal 16 at a right angle to the flag-shaped terminal 16 in FIG. 3, and the lower portion of the connecting portion with the lead wire 15 forms a flat sleeve shape. A sleeve portion 17 is formed. The sleeve portion 17 is provided with a striped cutout 17a, and the sleeve portion 17 is fitted to the plate portion 5b with the cutout 17a facing the pin portion 5a of the terminal 5. ing. That is, the notch 17a of the sleeve portion 17 is adapted to be fitted to a connecting portion between the pin portion 5a and the plate portion 5b of the terminal 5. The flag-type terminal 16 is connected to terminals 5, 5, 5, 5 arranged on the circumference as shown in FIG. Then, the plate portions 5b, 5b, 5b, 5b of the terminals 5, 5, 5, 5 are directed to the outside of the circumference, and the terminals 5, 5, 5, 5 are further opposed to the two terminals 5, 5 is arranged at an angle α of approximately 45 degrees with respect to the surface including the case 6 opening 7, the flag-type terminals 16, 16, 16, 16 are also angled approximately 45 degrees with respect to the surface including the opening 7. Make. That is, the lead wires 15, 15, 15, 15 also form an angle of approximately 45 degrees with the surface including the opening 7, and the fixing portion with the flag-type terminals 16, 16, 16, 16 is the flag flag. The mold terminals 16, 16, 16, and 16 are arranged on the counterclockwise side of the circumference. Therefore, even if the lead wires 15, 15, 15, and 15 are routed toward the opening 7 of the case 6 in order to pull them out of the power terminal structure 1, the lead wires 15, 15, 15, and 15 are large. Do not bend. As a result, disconnection or short circuit of the lead wires 15, 15, 15, 15 can be avoided. Further, since it is not necessary to bend the lead wires 15, 15, 15, and 15 greatly, the handling operation is facilitated.
[0016]
The terminals 5, 5, 5, 5 have a line 51 connecting the two facing terminals 5, 5, approximately 45 degrees with respect to a straight line 52 parallel to the surface including the opening 7 of the case 6. Although it arrange | positions so that the angle (alpha) may be made, this angle is not restricted to 45 degree | times, 60 degree | times etc. may be sufficient. In short, the line 51 connecting the two facing terminals 5 and 5 is inclined with respect to the surface including the opening 7 of the case 6, and the lead wire of the flag-type terminal 16 connected to the terminal 5 is It doesn't have to bend greatly
[0017]
【The invention's effect】
As is clear from the above, according to the power supply terminal structure of the first aspect of the present invention, the four terminals composed of the pin portion and the plate portion are arranged at substantially equal intervals in the circumferential direction, and the plate portion is on the outside. The four terminals are terminals that are connected so that the flag-type terminal and the lead wire face the same direction of the circumference with respect to the flag-type terminal. The opening of the case is an opening for pulling out the lead wire to the outside, and further, the main body so that a line connecting the two terminals facing each other obliquely intersects a plane including the opening of the case since was placed, the flag-type terminal lead line connected to the orientation in an oblique direction with respect to the plane including the opening of the case, therefore, even maneuverability to draw the lead wire from the opening of the case, lead The line is a big bend It does not, or broken lead wires, can prevent a short circuit which leads connected, also facilitates handling of the lead.
[0018]
According to the power supply terminal structure of the invention of claim 2, the terminals are arranged so that a line connecting the two opposing terminals intersects at a substantially 45 ° with respect to a plane including the opening. Bending can be reduced.
[0019]
According to the compressor of the invention of claim 3, in the power supply terminal structure provided in the compressor, the four terminals composed of the pin portion and the plate portion are arranged at substantially equal intervals in the circumferential direction, and the plate portion is provided. Arranged so as to be located on the outside, the four terminals are connected to the flag-type terminal and the lead wire so that the lead wire faces the same direction of the circumference with respect to the flag-type terminal. The opening of the case is an opening for pulling out the lead wire to the outside, and further, a line connecting the two terminals facing each other obliquely intersects a plane including the opening of the case Since it is arranged on the main body and the opening is arranged facing downward, it is possible to prevent disconnection or short circuit of the lead wire of the flag type terminal connected to the terminal, and dust or water drops etc. enter the case. This power terminator can be prevented The performance of the compressor provided with Le structural stability, and can be safely.
[Brief description of the drawings]
FIG. 1 is a front view showing a power supply terminal structure according to an embodiment of the present invention.
FIG. 2 is a cross-sectional view showing a state where the power supply terminal structure of FIG. 1 is installed in a compressor of a refrigerator.
3 is a perspective view showing a flag-type terminal connected to a terminal of the power supply terminal structure of FIG. 1. FIG.
FIG. 4 is a front view showing a conventional power terminal structure.
FIG. 5 is a front view showing a conventional power terminal structure.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Power supply terminal structure 2 Power supply terminal structure main body 5 Terminal 5a Terminal pin part 5b Terminal board part 6 Case 7 Case opening 15 Lead wire 16 Flag type terminal 51 Line 52 which connects between the terminals 5 and 5 which face each other A line parallel to the plane containing the opening 7

Claims (3)

Four terminals (5) consisting of a pin portion (5a) and a plate portion (5b) are arranged on the main body (2) at substantially equal intervals in the circumferential direction, and the plate portion (5b) is located outside. In the power supply terminal structure in which the case (6) having the opening (7) at one place in the circumferential direction is detachably attached to the main body (2) so as to cover the terminal (5),
The four terminals (5) have a flag terminal (16) and a lead wire (15), and the lead wire (15) faces the same direction of the circumference with respect to the flag terminal (16). The terminal (5) connected as follows:
The opening (7) of the case is an opening (7) for pulling out the lead wire (15) to the outside.
A power supply terminal structure, characterized in that a line (51) connecting the two terminals (5) facing each other obliquely intersects a plane including the opening (7) of the case (6).   The power supply terminal structure according to claim 1, characterized in that the line (51) connecting the two opposing terminals (5) intersects at approximately 45 ° with respect to the plane including the opening (7). . In the compressor having a casing (11) with a compressor that compresses the refrigerant and a motor that drives the compressor,
In the casing (11) of the compressor,
Four terminals (5) consisting of a pin portion (5a) and a plate portion (5b) are arranged on the main body (2) at substantially equal intervals in the circumferential direction, and the plate portion (5b) is located outside. provided so as, in the main body (2), covers the terminal (5), provided with a power supply terminal structure that the casing (6) mounted detachably with an opening (7) at one location in the circumferential direction, the 4 The two terminals (5) have the flag terminal (16) and the lead wire (15) so that the lead wire (15) faces the same direction of the circumference with respect to the flag terminal (16). It is a terminal (5) to be connected, and the opening (7) of the case is an opening (7) for drawing out the lead wire (15) to the outside. The line (51) connecting (5) to the plane including the opening (7) of the case (6) As well as configured to intersect obliquely, compressor, characterized in that arranged toward the opening (7) downwardly.

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