JP2000232748A - Stator for compressor motor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a highly reliable stator for a compressor motor by reducing the direct material cost and working man-hours, by suppressing as much as possible the used amount of insulating members and exclusive use fixing members at treating power supply connecting lines drawn out from windings. SOLUTION: A stator for compressor motor is provided with an annular yoke core 1, in which a plurality of magnetic pole teeth are radially arranged at prescribed intervals along its inner periphery, windings 4a-4f which are respectively wound around the magnetic pole teeth of the core 1 through insulating members 2, and power supply connecting lines 17u, 17v, and 17w, which are drawn out from the windings 4a-4f and connected to each other to form a polyphase winding. The winding terminals which are drawn out directly from the windings 4a-4f, and the power supply connecting lines 17u, 17v, and 17w are raised mutually collectively at a prescribed position.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stator for a compressor motor incorporated in a compressor mounted on an air conditioner or the like.

[0002]

2. Description of the Related Art A compressor motor incorporated in a compressor mounted on an air conditioner or the like is provided with a rotor integrally mounted on a rotating shaft and a small gap between the outer peripheral surface of the rotor and the rotor. And a fixed stator.

[0003] The stator has an annular yoke core in which a plurality of magnetic pole teeth are radially installed at predetermined intervals along an inner peripheral portion, and an insulating member is attached to the magnetic pole teeth of the yoke core. And a winding wound therethrough to form a multi-phase winding.

[0004] The winding wound around the insulating member has a winding start terminal and a winding end terminal pulled out from the insulating member, and these are called crossovers or neutral point connection depending on the connection position. Also called a line or a power supply connection line, they are connected and wired to form a predetermined electric circuit.

[0005] To explain, conventionally, as shown in Fig. 12, a terminal of a winding c is connected to a metal pin b provided on an insulating member a called a bobbin. Then, a disk-shaped insulating member d composed of a printed board or the like is fitted into the metal pin b, and the insulating film of the winding c is melted by soldering or the like, so that the connection between the winding c and an electric circuit in the board is established. It was done.

A power connector e is provided on a part of the disc-shaped insulating member d, and is connected to a power source by using a lead wire (not shown) of another member. The insulating member g of another piece is inserted between the winding c and the yoke core f to insulate the winding c protruding from the insulating member a and the yoke core f.

[0007]

According to such a configuration, there are the following problems. 1) In addition to the insulating member a, a disk-shaped insulating member d composed of a printed circuit board and the like, a power supply connector e and a lead wire for power supply connection are separately required, which is expensive.

2) It is necessary to increase the diameters of the metal pin b and the winding c as the current capacity increases.
Therefore, the work of winding the winding c around the metal pin b becomes difficult, and the contact reliability is reduced.

3) An inexpensive printed circuit board cannot be used as the disc-shaped insulating member d, and a copper plate or a thick copper wire directly incorporated into the board is required, and the production is difficult due to insulation problems. , And it becomes large and expensive. Also, the power supply connector e is large and complicated, and very expensive.

4) In the case where the winding c having a high heat resistance is used, the coating cannot be completely removed by melting with solder. Therefore, an expensive film peeling mechanism must be used instead of the metal pin, and the contact reliability is not sufficient.

The present invention has been made in view of the above circumstances. It is an object of the present invention to provide an insulating member or a dedicated fixing member for processing a winding terminal directly drawn out from a winding as a power supply connection line. The purpose of the present invention is to provide a highly reliable stator for an electric motor for a compressor, while minimizing the use of a compressor and reducing the cost of direct materials and the number of work steps.

[0012]

According to the present invention, there is provided a stator for a compressor motor according to the present invention, wherein a plurality of magnetic pole teeth are provided at predetermined intervals along an inner peripheral portion. An annular yoke core installed radially, windings wound around the magnetic pole teeth of the yoke iron through insulating members, and pulled out of these windings and connected to each other to form a polyphase winding Power supply connection lines, and winding terminals that are directly drawn out from the respective windings as power supply connection lines are collectively started up at predetermined positions.

Further, the stator of the compressor motor according to the present invention is characterized in that an annular yoke core in which a plurality of magnetic pole teeth are radially arranged at predetermined intervals along an inner peripheral portion. A winding wound around the magnetic pole teeth of the yoke core via an insulating member; and a power supply connection line formed by connecting the windings directly drawn from these windings and facing each other in parallel. One of the power supply connection lines is wound around a half circumference along an insulating member flange protruding from the end face of the yoke core, and is fixed by twisting with a power supply connection terminal connected to the other winding.

Further, in the stator of the compressor motor according to the present invention, as a twelfth aspect, an annular yoke core in which a plurality of magnetic pole teeth are radially installed at predetermined intervals along an inner peripheral portion. And a winding wound around the magnetic pole teeth of the yoke core via an insulating member, and a power supply connection line formed by connecting windings directly drawn from these windings and facing each other in series. And a terminal connected to the power supply connection line.

As described above, by employing the present invention, the use of an insulating member or a dedicated fixing member can be minimized in processing a winding terminal directly drawn out from the winding as a power supply connection line, thereby reducing the cost of direct material. Work man-hours can be reduced and reliability can be improved.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a first embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows the assembled motor stator for a compressor. This stator has an annular yoke core 1 in which a plurality of magnetic pole teeth (not shown because windings to be described later are wound thereon) are formed radially integrally along an inner peripheral portion at predetermined intervals. And a winding 4a wound directly around the magnetic pole teeth of the yoke core 1 from the center side via the insulating member 2.
To 4f.

Here, the magnetic pole teeth, that is, the windings 4a to 4f
Is a stator called a so-called 6 slot.
The multiphase winding is formed by connecting the winding terminals directly drawn out as u, 17v, and 17w as described later.

From upper and lower end surfaces 1a of the yoke core 1, flanges 5a to 5f formed integrally with the insulating member 2 protrude. These flange portions 5a to 5f are arranged side by side at a predetermined interval, and the positions of the flange portions 5a to 5f are described later.
4f.

FIG. 2 shows an example of the connection of the stator of the electric motor for the compressor, in which a so-called star-shaped parallel connection is formed.
FIG. 4 is a diagram showing a wiring block constituting a motor stator for a compressor, and FIG. 5 is an exploded view of the outer peripheral surfaces of the flange portions 5a to 5f.

First, the connection state of the stator for the motor for a compressor shown in FIG. 2 will be described. Here, one winding terminal 14a drawn from the winding 4a is a winding start terminal, and one winding terminal 13d drawn from the winding 4d at a position facing the winding 4a is a winding end terminal. The power supply connection lines 17w are formed by twisting each other.

One winding terminal 14c drawn from the winding 4c is a winding start terminal, and one winding terminal 13f drawn from the winding 4f at a position facing the winding 4c is a winding end terminal. And the power supply connection line 17v is formed.

Further, one winding terminal 14b drawn from the winding 4e is a winding start terminal, and one winding terminal 13b drawn from the winding 4b at a position facing the winding 4e is a winding end terminal. And the power supply connection line 17u is formed.

Each of the windings 4a and 4d connected in parallel,
4b and 4e, 4c and 4f are respectively wound continuously, and these crossovers are connected to each other at a predetermined position as a neutral point connection line H.

As shown in the wiring block of FIG. 4, in a state where the windings 4a to 4f are arranged in numerical order, windings adjacent to each other are formed in opposite winding directions. That is, the winding directions of the windings 4a and 4b are opposite to each other.
b and the winding 4c have opposite winding directions.

In other words, every other winding 4a, 4c,
The winding directions of 4e, 4b, 4d, and 4f are equal. The power supply connection line 17w drawn from one end of the windings 4a and 4d and twisted is connected to the W phase, and the power supply connection line 17u drawn from the windings 4b and 4e and twisted is connected to the U phase. Then, the power supply connection line 17v drawn from the windings 4c and 4f and twisted is connected to the V phase.

As shown in FIG. 5, on the outer peripheral surface of the insulating member flange 5 and on the flange 5a corresponding to the winding 4a, a winding start terminal 14a constituting the power supply connection line 17w is locked. A winding start terminal locking groove 7a is provided. The groove bottom of the locking groove 7a is cut into the vicinity of the end face 1a of the yoke core.

Further, a winding end guide groove 8a is provided on the outer peripheral surface of the flange portion 5a with a gentle inclination downward from a position separated from the upper end edge. The groove depth of the winding end guide groove 8a is equal to or greater than the outer diameter of the winding, and guides and holds the winding end terminal 13f constituting the power supply connection line 17v.

Further, near the groove bottom of the winding start terminal locking groove 7a in the flange portion 5a, a winding terminal guide projection 9a for regulating the upward movement of the winding start terminal 14a constituting the power supply connection line 17w is provided. Is provided.

In the flange 5b corresponding to the winding 4b adjacent to the winding 4a, a winding end locking groove 10b is provided from the upper end of the right end in the drawing. The end-of-winding terminal 13b constituting the power supply connection line 17u drawn from the winding wire 4b is locked in the locking groove 10b.

As shown in FIG. 3 in particular, the end-of-winding-end locking groove 10b is provided obliquely to the surface direction of the flange 5b, and the angle of the groove 10b is set to the end-of-winding end 13b.
Is changed by a predetermined angle θ.

As shown in FIG. 5 again, a winding 4f is provided at a substantially vertical center of the left end of the flange 5b in the drawing.
Terminal guide projection 1 that regulates the upward movement of end terminal 13f that is drawn out of power supply connection line 17v and that constitutes power supply connection line 17v
1b is protruded. Further, a winding terminal guide protrusion 12b for restricting the downward movement of the winding end terminal 13f in the downward direction is provided protruding near the lower end in the vertical direction of the right end of the flange 5b.

The same four patterns as described above are alternately provided on the subsequent four flanges 5c to 5f, and the figures are numbered here to replace the new description. I do.

It is to be noted that a pair of locking claws 15, 15 are provided on both left and right sides of the upper end portion of the flange 5 c so as to protrude right and left, and these locking claws 15, 15 and the flange 5 c are provided.
, The power supply connection lines 17u, 17v, 17w are started up and are integrally processed.

At the time of processing the power supply connection line 17v, the winding end terminal 13f locked in the winding end locking groove 10f of the flange 5f is pulled obliquely downward to the right, and is pulled out to the outer peripheral surface of the adjacent flange 5a. It is guided by the provided winding end guide groove 8a.

Further, two winding end guide projections 11b and 12b provided on the left and right sides of the outer periphery of the adjacent flange 5b.
It is passed diagonally between. Finally, a further adjacent flange 5
c is passed under the winding end guide projection 9c provided on the outer periphery of the coil c.

After the winding end terminal 13f is wound around the insulating member flange 5 for about half a turn as described above, it is twisted together with the winding start terminal 14c locked in the winding start terminal locking groove 7c. While being drawn out, and constitutes the power supply connection line 17v.

On the other hand, a groove 7e for locking the terminal at the beginning of winding of the flange 5e
The winding start terminal 14e is pulled out to the left through the lower side of the winding terminal guide protrusion 9e provided in the vicinity of the winding start terminal 14e, and is separated from the two winding terminal guides provided at the adjacent flange 5d. It is drawn obliquely upward along the gap between the protrusions 11d and 12d.

Further, the winding start terminal 14e is guided by the winding terminal guide groove 8c of the adjacent flange 5c and is wound around the flange 5 approximately half a turn. It is locked in the stop groove 10b, pulled out while being twisted together with the end-of-winding terminal 13b previously locked here, and constitutes the power supply connection line 17u.

Similarly, the winding start terminal 14a pulled out from the flange 5a is drawn around the semicircle along the flange 5, and is pulled out while being twisted together with the winding end 13d to form the power supply connection line 17w. are doing.

The power supply connection lines 17u, 17v, and 17w are covered with insulating tubes 16u, 16v, and 16w, respectively, as shown in FIG.
Is bent rightward, and is pulled along the inner peripheral surface of the flange 5c through the lower side of the locking claw 15 provided at the left end of the flange 5c, and is pulled out to the rising position.

Similarly, the power supply connection line 17w is bent to the left, passes under the locking claw 15 at the right end paired with the locking claw 15, and extends along the inner peripheral surface of the flange 5c. And pulled out to the starting position.

The power supply connection line 17v is
As shown in (B), the winding start end 14e held in the winding end guide groove 8c is contacted via the insulating tube 16v, and is raised almost directly above.

Thereafter, each of the power supply connection lines 17u to 17w is twisted together, and the terminal of the motor is completed by directly connecting the terminal 18 to the exposed copper wire by stripping the coating of the tip end. .

In this manner, the power supply connection lines 17u-17
w is drawn out from the windings 4b to 4d adjacent to each other, and the rising position of the power supply connection lines 17u to 17w is made to correspond to the middle winding 4c, so that the distance to the rising position can be made as short as possible. It is not necessary to fix the connection wires 17u to 17w to the flange 5, so that the work is easy and the cost can be reduced.

The end-of-winding terminal locking groove 10b provided on the right end of the flange portion, for example, 5b, changes the angle of the end-of-winding terminal 13b with respect to the lead-out direction of the end-of-winding terminal 13b. It is possible to reliably prevent the stopper from coming off after being locked in the stop groove 10b.

The end-of-winding terminal 13f constituting the power supply connection line, for example, 17v is connected to the winding terminal locking groove 10f through the flange portion 5f.
a, a winding end guide groove 8a and a projection 9 provided on the outer peripheral surface of
c, 11b, and 12b, so that the winding terminals 13f can be led up and down substantially in parallel, so that the upward and downward movement of the winding terminals 13f can be surely regulated. There is no danger of contact, electrical insulation can be easily and reliably performed, and a highly reliable motor stator can be supplied.

The end-of-winding terminal 13f is connected to the power supply connection line 17
The winding end terminal 13f, which is twisted together at a fixed position with the winding start terminal 14c constituting the v, is wound approximately half way along the flange 5 so that the winding end terminal 13f is more closely attached to the outer peripheral surface of each flange 5 and is vertically and axially connected. The movement in the direction is regulated, so that no so-called tying thread or other fixing member is required at all, and the operation is simple, inexpensive and can be firmly fixed.

Further, the lengths of the insulating tubes 16u to 16w covering the power supply connection lines 17u to 17w can be made as short as possible, and these costs can be reduced.

The power supply connection line 17v is twisted and rises with the other power supply connection lines 17u and 17w above the winding 4c, but the winding start terminal 14e is connected to the power supply connection line 17v.
Because it is completely pressed down and fixed by
Even if some tension is applied to the entire power supply connection line, the movement is reliably prevented.

Further, the power supply connecting lines 17u, 17w drawn from the left and right windings 4b, 4d are connected to the locking claws 15, 15 respectively.
To the rising position, which is a predetermined position on the inner peripheral surface of the flange portion 5c, and then the middle power supply connection line 17v is derived from the outer periphery of the flange portion 5c to the rising position, and is collected.
The flange portion 5c can be sandwiched between the three power supply connection lines 17u to 17w. Therefore, it is possible to prevent the start-up positions from being varied, and to surely prevent the entire power supply connection lines 17u to 17w from moving.

When the power supply connection line 17v is started from the middle winding 5c, the winding terminal 13 guided along the flange 5c
f is locked in the winding end guide groove 8a and is almost hidden, so that the power supply connection line 17v can be prevented from protruding in the axial direction.

Each power supply connection line 1 derived to the start-up position
By twisting 7u to 17w at the upper portion of the flange 5c, the labor of assembling with a binding thread or the like can be omitted, and the three power supply connection lines 17u to 17w can be more securely fixed.

Next, the second embodiment will be described with reference to FIGS.
Description will be made based on 0. FIG. 7 shows a part of the outer peripheral surface of the flange 5 developed, and FIG. 8 shows a part of a plane of the compressor motor stator. Flange notches 19b to 19d are provided from the upper end to the center of the flange 5, and each magnetic pole tooth has a winding 4b.
4d are wound, and the winding end terminal 13f and the winding start terminals 14a and 14e connected to the respective power supply connection lines 17u to 17w drawn out from these windings are wound around the collar 5 about half a turn.

As shown in FIG. 9, the winding start terminal 14c extends obliquely from a flange notch 19c provided in the flange 5c. After the winding 4c is wound around the magnetic pole teeth, it rises upward through the gap of the inner peripheral groove 21 as shown in FIG.

The end-of-winding terminal 13f is folded back by a folding protrusion 20 provided at the lower right end of the flange 5b, and the flange 5c
Start terminal 14 that passes through the inner periphery of the power supply connection line 17v
c and is pulled out to the outer peripheral side or upward.

Further, the winding start terminals 14a and 14e are connected to the power supply connecting lines 17w and 17u at the upper end portions of the flange cutouts 19d and 19b, respectively.
And 13b are pulled out in the outer peripheral direction.

Thereafter, the insulating tubes 16w and 16u are put on the power connection lines 17w and 17u, respectively, and the power connection lines 17u and 17w are folded back to the inner peripheral side of the flange portion 5 as shown in FIG. Derived to the position. Further, the power supply connection line 17v is raised up as it is, covered with the insulating tube 16v, and thereafter processed as described above.

As described above, according to the second embodiment, since all of the power supply connection lines 17u to 17w crawl inside the flange 5, the insulating tube 16 is inserted into each of them and the outer diameter becomes large. Also, the protrusion does not protrude to the outer peripheral portion of the flange portion 5, and damage at the time of assembling into the frame is prevented.

Next, a third embodiment will be described with reference to FIG. Here, the windings 4a and 4 which are opposed to each other in position in configuring the motor stator for the compressor are described.
Assuming that d, 4b and 4e, 4c and 4f are connected in series, an electric wire connected to the power supply connection lines 17u to 17w is started as a winding start terminal, and then the insulating tubes 16u to
16w is covered.

The left and right power supply connection lines 17u and 17w are led out along the inner peripheral surface of the flange 5 described above, and the middle power supply connection line 17v is raised as it is. Then, it is twisted together with the power supply connection lines 17u and 17w derived from the left and right, and is raised upward.

Therefore, also in the motor stator for a compressor connected in series, the electric wires connected to the power supply connection lines 17u to 17w are used as the terminals at the start of winding, so that each terminal is pressed down by the winding wound thereafter. Since it is completely fixed and can be drawn out to the rising position by being crawled along the flange 5 as it is, the work becomes very easy.

[0062]

As described above, according to the present invention, the use of an insulating member or a dedicated fixing member is minimized in processing a winding terminal directly drawn from a winding as a power supply connection line. In addition, the number of work steps can be reduced, and the reliability can be improved.

[Brief description of the drawings]

FIG. 1 is an external perspective view of a stator of a compressor electric motor, showing a first embodiment of the present invention.

FIG. 2 is an exploded view of an outer periphery of a flange portion of an insulating member constituting a part of a stator of the compressor motor, showing the embodiment.

FIG. 3 is a star parallel connection diagram of the motor stator for the compressor, showing the same embodiment.

FIG. 4 is an actual wiring diagram of a motor stator for a compressor, showing the embodiment.

FIG. 5 is a diagram showing an outer peripheral surface of a flange portion of a power supply connection line rising portion, showing the embodiment.

FIG. 6 is a plan view showing a groove for locking the end of the winding, showing the embodiment.

FIG. 7 is a diagram illustrating a flange outer peripheral surface according to a second embodiment.

FIG. 8 is a plan view of the motor stator, showing the same embodiment.

FIG. 9 is a view showing the embodiment, and showing a state in which a winding start terminal is pulled out to an outer periphery of a flange portion.

FIG. 10 is a view showing the same embodiment, showing a state in which the winding start terminal is raised through the groove after winding the winding.

FIG. 11 is a serial connection diagram of a motor stator for a compressor, showing a third embodiment.

FIG. 12 is a plan view and a side view of a conventional motor stator.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Toroidal yoke, 2 ... Insulating member, 4a-4f ... Winding, 17u, 17v, 17w ... Power supply connection line, 5a-5f ... Flange part, 15 ... Locking claw part, 14a, 14c, 14e ... Winding Start terminal, 13b, 13d, 13f ... end terminal of winding, 10b, 10d, 10f ... groove for locking end terminal of winding, 8a, 8c, 8e ... guide groove of winding terminal, 16u, 16v, 16w ... insulating tube.

Claims (12)

[Claims] An annular yoke core in which a plurality of magnetic pole teeth are radially installed at predetermined intervals along an inner peripheral portion, and wound around the magnetic pole teeth of the yoke core via an insulating member. And the winding
In a stator of a compressor motor having a power connection line drawn from these windings and connected to each other to form a multi-phase winding, a winding terminal directly drawn as a power connection line from each winding is A stator for a compressor electric motor, wherein the stators are started together at predetermined positions. 2. A winding terminal drawn directly from said winding as a power supply connection line is located above a winding start terminal position of a predetermined winding, together with a winding terminal drawn from the remaining windings as a power supply connection line. The stator for an electric motor for a compressor according to claim 1, wherein the stator is started up at a time. 3. The power supply connection line according to claim 1, wherein said power supply connection lines are drawn out of windings adjacent to each other, and a rising position thereof is located above a middle winding. 3. The stator of the electric motor for a compressor according to claim 1. 4. A flange portion is provided at a position protruding from the end face of the yoke core of the insulating member, and a pair of locking claws are provided on the flange portion. The power connection line is raised along the inner peripheral surface of the flange portion through the lower side of the locking claw portion, and another power supply connection line is raised along the outer peripheral surface of the flange portion. A stator for an electric motor for a compressor according to any one of claims 1 to 3. 5. The power supply connection line drawn from the winding,
The stator of a motor for a compressor according to any one of claims 1 to 4, wherein the stator is twisted and put together. 6. An annular yoke core in which a plurality of magnetic pole teeth are radially installed at predetermined intervals along an inner peripheral portion, and the magnetic pole teeth of the yoke core are wound around an insulating member. And the winding
In a stator for a compressor motor, comprising a power supply connecting line formed by connecting windings facing each other directly in parallel from these windings, one of the power supply connecting lines of the windings is connected from the end face of the yoke core. A stator for an electric motor for a compressor, wherein the stator is wound about a half circumference along a protruding insulating member flange portion, and is fixed by twisting with a power supply connection terminal connected to the other winding. 7. The winding start terminal is pulled out along the circumferential direction of the flange portion, and the winding end terminal is pulled out along the circumferential direction of the flange portion, and is inclined at a predetermined angle to the outer peripheral surface of the flange portion in parallel. The stator of a motor for a compressor according to claim 6, wherein 8. The stator for a compressor motor according to claim 6, wherein said windings have winding directions of adjacent windings opposite to each other. 9. An end-of-winding terminal locking groove is provided at an end edge of the insulating member flange portion facing the end-of-winding terminal position, and the end-of-winding terminal locking groove is shifted from a direction in which the end-of-winding terminal is led out. The stator according to claim 7, wherein the stator is provided at an angle. 10. The stator for a compressor motor according to claim 6, wherein the power supply connection line is led out inside the insulating member flange. 11. The end-of-winding terminal is drawn out along a guide groove provided on the outer peripheral surface of the insulating member flange portion, and the depth of the guide groove is equal to or greater than the outer diameter of the power supply connection line. The stator of a motor for a compressor according to claim 7, wherein 12. An annular yoke core in which a plurality of magnetic pole teeth are radially installed at predetermined intervals along an inner peripheral portion, and the magnetic pole teeth of the yoke core are wound around via an insulating member. And a power supply connection line formed by connecting the windings directly drawn from these windings and facing each other in series, in the stator of the compressor motor, starting to wind the power supply connection lines connected to the respective windings. A stator for an electric motor for a compressor, which is a terminal.