JP3673105B2 - Compressor motor stator - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a stator of a motor for a compressor incorporated in a compressor mounted on an air conditioner or the like.
[0002]
[Prior art]
An electric motor for a compressor incorporated in a compressor mounted on an air conditioner or the like includes a rotor that is integrally attached to a rotating shaft, and a stator that is disposed with a small gap between the outer peripheral surface of the rotor and Consists of
[0003]
The stator includes an annular yoke iron core in which a plurality of magnetic pole teeth are radially arranged along the inner peripheral portion with a predetermined interval, and the magnetic pole teeth of the yoke iron core are wound via an insulating member. It consists of windings to be mounted, and forms a multiphase winding.
[0004]
The winding wound around the insulating member has a winding start terminal and a winding end terminal drawn out from the insulating member, which are called crossover wires, or a neutral point connection line or a power source depending on the connection position. It is also called a connection line, and is connected and wired to constitute a predetermined electric circuit.
[0005]
If it demonstrates, conventionally, as shown in FIG. 12, the terminal of the coil | winding c will be connected on the metal pin b provided on the insulating member a called a bobbin. Then, a disk-shaped insulating member d composed of a printed circuit board or the like is fitted into the metal pin b, and the insulating film of the winding c is melted with solder or the like, so that the connection between the winding c and the electric circuit in the board It was done.
[0006]
A power connector e is provided in a part of the disk-shaped insulating member d, and is connected to a power source by using a lead wire which is not shown. Another insulating member g is inserted between the winding c and the yoke core f in order to insulate the winding c protruding from the insulating member a and the yoke core f.
[0007]
[Problems to be solved by the invention]
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 connector e, and a power connection lead are separately required, and the cost becomes high.
[0008]
2) As the current capacity increases, it is necessary to increase the diameters of the metal pin b and the winding c, so that the winding operation of the winding c around the metal pin b becomes difficult and the contact reliability is lowered.
[0009]
3) An inexpensive printed circuit board cannot be used as the disk-shaped insulating member d, and a copper plate or a thick copper wire is required to be directly incorporated into the circuit board. Become expensive. Further, the power connector e becomes large and complicated, and becomes very expensive.
[0010]
4) When the winding c having a high heat resistance film is used, the film cannot be completely peeled off by melting with solder. Therefore, an expensive film peeling mechanism must be used instead of the metal pin, and contact reliability is not sufficient.
[0011]
The present invention has been made paying attention to the above circumstances, and the object of the present invention is to use an insulating member or a dedicated fixing member when processing a winding terminal that is drawn directly from the winding as a power connection line. The aim is to provide a highly reliable stator for an electric motor for a compressor while reducing the direct material cost and the work man-hours by minimizing as much as possible.
[0012]
[Means for Solving the Problems]
In order to satisfy the above object, a stator of a motor for a compressor according to the present invention includes an annular yoke core in which a plurality of magnetic pole teeth are radially disposed along an inner peripheral portion with a predetermined interval, Windings wound around the magnetic pole teeth of the yoke iron core via an insulating member, and power connection lines drawn from these windings and connected to each other to form a multiphase winding, The winding terminal that is directly drawn out as the power connection line is drawn from the windings adjacent to each other, and at the upper part of the winding start terminal position of the predetermined winding, together with the winding terminal that is drawn out from the remaining windings as the power connection line, They are twisted together and set up .
[0013]
Furthermore, according to the present invention , the power supply connection line has the rising position at the upper part of the middle winding.
Further, according to the present invention, a flange portion is provided at a position protruding from the end surface of the yoke core of the insulating member, and a pair of locking claw portions are provided on the flange portion. The power connection line thus formed is raised along the inner peripheral surface of the flange through the lower side of the locking claw, and the other power connection line is raised along the outer peripheral surface of the flange.
[0014]
Further, according to the present invention , each of the windings is formed by connecting windings facing each other in parallel, and one power connection line of the winding is formed along the insulating member flange protruding from the end surface of the yoke core. It was routed about half a turn and fixed with the terminal of the power connection line connected to the other winding.
Further, in the present invention, each of the windings is formed by connecting windings facing each other in series , and a power connection line connected to each winding is used as a winding start terminal .
[0015]
In this way, by adopting the present invention, when processing the winding terminal drawn directly from the winding as a power connection line, the use of an insulating member or a dedicated fixing member is suppressed as much as possible, and the direct material cost and the work man-hour are reduced. Reduction and improvement in reliability can be obtained.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
The first embodiment of the present invention will be described below with reference to the drawings.
FIG. 1 shows an 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 described later are wound) are integrally formed radially at predetermined intervals along the inner periphery. And windings 4a to 4f wound directly on the magnetic pole teeth of the yoke iron core 1 from the central portion side through the insulating member 2.
[0017]
Here, since there are six sets of magnetic pole teeth, that is, windings 4a to 4f, so-called 6-slot stators are provided, and winding terminals that are directly drawn out from the windings 4a to 4f as power connection lines 17u, 17v, and 17w are provided. By connecting as described later, a multiphase winding is formed.
[0018]
From the upper and lower end faces 1 a of the yoke iron core 1, flanges 5 a to 5 f formed integrally with the insulating member 2 protrude. These flanges 5a to 5f are juxtaposed at a predetermined interval, and their positions correspond to windings 4a to 4f described later.
[0019]
FIG. 2 shows an example of the connection of a compressor motor stator, in which a so-called star-shaped parallel connection is formed. FIG. 4 is a diagram showing a wiring block constituting the motor stator for the compressor, and FIG. 5 shows the outer peripheral surfaces of the flanges 5a to 5f in an expanded manner.
[0020]
First, the connection state of the compressor motor stator of FIG. 2 will be described.
Here, one winding terminal 14a drawn from the winding 4a serves as a winding start terminal, and one winding terminal 13d drawn from the winding 4d positioned opposite to the winding 4a serves as a winding end terminal. The power connection lines 17w are formed by being twisted together.
[0021]
One winding terminal 14c drawn from the winding 4c serves as a winding start terminal, and one winding terminal 13f drawn from the winding 4f located at a position opposite to the winding 4c serves as a winding end terminal. A twisted power connection line 17v is formed.
[0022]
Furthermore, one winding terminal 14e drawn from the winding 4e serves as a winding start terminal, and one winding terminal 13b drawn from the winding 4b located opposite to the winding 4e serves as a winding end terminal. The power connection line 17u is formed by being twisted.
[0023]
Each of the windings 4a and 4d, 4b and 4e, 4c and 4f connected in parallel is wound continuously, and these connecting wires are connected to each other as a neutral point connection line H at a predetermined position.
[0024]
As shown in the wiring block of FIG. 4, the windings adjacent to each other are formed in the opposite winding directions in a state where the windings 4 a to 4 f are arranged in numerical order. That is, the winding direction of the winding 4a and the winding 4b is opposite to each other, and the winding direction of the winding 4b and the winding 4c is opposite to each other.
[0025]
In other words, every other winding 4a, 4c, 4e and 4b, 4d, 4f have the same winding direction. The power connection line 17w drawn from one end of the windings 4a and 4d is connected to the W phase, and the power connection line 17u drawn from the windings 4b and 4e is connected to the U phase. Then, the power connection line 17v drawn and drawn from the winding 4c and the winding 4f is connected to the V phase.
[0026]
As shown in FIG. 5, the winding start terminal for locking the winding start terminal 14 a constituting the power supply connection line 17 w to the flange 5 a corresponding to the winding 4 a on the outer peripheral surface of the insulating member flange 5. A locking groove 7a is provided. The groove bottom of the locking groove 7a is cut to the vicinity of the yoke core end face 1a.
[0027]
Further, a winding terminal guide groove 8a is provided on the outer peripheral surface of the flange portion 5a with a gentle slope from a position away from the upper edge to the lower side. The groove depth of the winding terminal guide groove 8a is equal to or greater than the outer diameter of the winding, and the winding end terminal 13f constituting the power supply connection line 17v is guided and held here.
[0028]
Further, a winding terminal guide protrusion 9a for restricting the upward movement of the winding start terminal 14a constituting the power supply connecting line 17w is provided in the vicinity of the groove bottom of the winding start terminal locking groove 7a in the flange portion 5a. Yes.
[0029]
In the flange portion 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 portion in the drawing. The end-of-winding terminal 13b constituting the power connection line 17u drawn from the winding 4b is locked in the locking groove 10b.
[0030]
In particular, as shown in FIG. 3, the end-of-winding terminal locking groove 10b is provided obliquely with respect to the surface direction of the flange portion 5b, and the angle of the groove 10b is different from the pull-out direction of the end-of-winding terminal 13b. Only a predetermined angle θ is changed.
[0031]
As shown in FIG. 5 again, the upper end of the winding end terminal 13f, which is drawn out of the winding 4f and constitutes the power supply connection line 17v, is located at the substantially vertical center of the left end in the figure of the flange 5b. A winding terminal guide protrusion 11b is provided to restrict the protrusion. Further, a winding terminal guide protrusion 12b that restricts the downward movement of the winding end terminal 13f is provided in the vicinity of the lower end in the vertical direction of the right end portion of the flange portion 5b.
[0032]
The following four collar portions 5c to 5f are also provided with two patterns similar to those described above, and here, the figures are numbered and replaced with new descriptions.
[0033]
In particular, only in the collar portion 5c, a pair of latching claw portions 15 and 15 are provided on both the left and right sides of the upper end portion so as to protrude right and left, and these latching claw portions 15 and 15 and the collar portion 5c are utilized. The power supply connection lines 17u, 17v, and 17w are started up and processed together.
[0034]
In the processing of the power connection line 17v, the winding end terminal 13f locked in the winding end terminal locking groove 10f of the flange portion 5f is drawn obliquely downward in the right direction and provided on the outer peripheral surface of the adjacent flange portion 5a. It is guided to the winding terminal guide groove 8a.
[0035]
Furthermore, it passes diagonally between two winding terminal guide protrusions 11b and 12b provided on the left and right of the outer peripheral portion of the adjacent flange portion 5b. Finally, it passes under the winding terminal guide projection 9c provided on the outer periphery of the adjacent flange 5c.
[0036]
As described above, the winding end terminal 13f is drawn about a half turn along the insulating member flange 5, and then pulled out while being twisted together with the winding start terminal 14c locked in the winding start terminal locking groove 7c. This constitutes a power supply connection line 17v.
[0037]
On the other hand, the winding start terminal 14e locked in the winding start terminal locking groove 7e of the flange portion 5e is pulled out to the left through the lower side of the winding terminal guide projection 9e provided in the vicinity thereof, and the adjacent flange It is pulled out obliquely upward along two winding terminal guide projections 11d and 12d provided apart from the portion 5d.
[0038]
Further, after the winding start terminal 14e is guided by the winding terminal guide groove 8c of the adjacent flange 5c and is routed about a half turn along the flange 5, the winding end terminal locking groove 10b of the adjacent flange 5b is reached. Is pulled out while being twisted together with the end-of-winding terminal 13b previously locked here, and constitutes a power connection line 17u.
[0039]
Similarly, the winding start terminal 14a drawn out from the collar part 5a is drawn about a half turn along the collar part 5 and drawn out while being twisted together with the winding end terminal 13d to constitute the power supply connection line 17w. .
[0040]
Each power connection line 17u, 17v, 17w is covered with an insulating tube 16u, 16v, 16w, respectively, and as shown in FIG. 6A, the power connection line 17u is bent rightward to It passes along the inner peripheral surface of the flange 5c through the lower side of the locking claw 15 provided at the left end, and is pulled out to the rising position.
[0041]
Similarly, the power connection line 17w is bent leftward and passes along the inner peripheral surface of the flange portion 5c through the lower side of the engagement claw portion 15 at the right end portion that makes a pair with the engagement claw portion 15. Pulled out to the starting position.
[0042]
Further, as shown in FIG. 6B, the power connection line 17v contacts the winding start terminal 14e held in the winding terminal guide groove 8c via the insulating tube 16v and is almost directly above. Launched.
[0043]
Thereafter, the power supply connection lines 17u to 17w are integrally formed, and the motor stator is completed by attaching the connection terminals 18 directly to the exposed copper wires by peeling off the coating of the respective tip portions.
[0044]
In this way, the power connection lines 17u to 17w are drawn from the adjacent windings 4b to 4d, and the rising positions of the power connection lines 17u to 17w are made to correspond to the middle winding 4c. Can be shortened as much as possible, and it is not necessary to fix the power supply connection lines 17u to 17w to the flange part 5, so that the operation is easy and the cost can be reduced.
[0045]
Since the end-of-winding terminal locking groove 10b provided at the right end of the flange portion, for example, 5b, has an angle different from the direction in which the end-of-winding terminal 13b is led out, the end-of-winding terminal 13b is changed to the above-mentioned end of winding terminal locking groove. It is possible to reliably prevent the dropout after being locked to 10b.
[0046]
The winding end terminal 13f constituting the power connection line, for example, 17v, passes from the winding terminal locking groove 10f via the winding terminal guide groove 8a and the projections 9c, 11b, 12b provided on the outer peripheral surface of the flange 5a. Since they are led out substantially obliquely in parallel, the upward and downward movement of the winding terminal 13f can be reliably controlled, and there is no risk that the winding terminals as the respective power connection lines come into contact with each other. Can be easily and reliably performed, and a highly reliable motor stator can be supplied.
[0047]
Since the end-of-winding terminal 13f is twisted together at a fixed position with respect to the start-of-winding terminal 14c constituting the power supply connection line 17v, the end-of-winding terminal 13f drawn about half a turn along the flange 5 It is more closely contacted with the outer peripheral surface and the movement in the vertical and axial directions is restricted, so that there is no need for so-called tying yarns or other separate fixing members, and the operation is simple, inexpensive and can be firmly fixed.
[0048]
Furthermore, the lengths of the insulating tubes 16u to 16w covering the power connection lines 17u to 17w can be shortened as much as possible, and these costs can be kept low.
[0049]
The power connection line 17v is raised by being twisted together with the other power connection lines 17u and 17w above the winding 4c, but the winding start terminal 14e is completely pressed down and fixed by the power connection line 17v. Therefore, even if some tension is applied to the entire power supply connection line, the movement is surely prevented.
[0050]
Further, the power connection lines 17u and 17w drawn from the left and right windings 4b and 4d are led out to the rising position which is a predetermined position on the inner peripheral surface of the flange portion 5c through the bottom of the locking claws 15 and 15, and then Since the middle power connection line 17v is led out from the outer periphery of the flange part 5c to the rising position, the flange part 5c can be sandwiched by the three power supply connection lines 17u to 17w. Therefore, variations in the starting position can be prevented, and movement of the entire power supply connection lines 17u to 17w can be reliably prevented.
[0051]
When the power supply connection line 17v is raised from the middle winding 5c, the winding terminal 13f guided along the flange 5c is locked in the winding terminal guide groove 8a and almost hidden, so that the power connection line 17v It can prevent overhanging in the direction.
[0052]
By twisting the power supply connection lines 17u to 17w led up to the starting position at the upper part of the collar portion 5c, it is possible to save time and labor for gathering them with a binding thread and to fix the three power supply connection lines 17u to 17w more reliably. Can be.
[0053]
Next, a second embodiment will be described with reference to FIGS.
FIG. 7 shows a part of the outer peripheral surface of the flange 5 developed, and FIG. 8 shows a part of the plane of the compressor motor stator. The flange notches 19b to 19d are provided from the upper end to the center of the flange 5, and the windings 4b to 4d are wound around the magnetic pole teeth. The end-of-winding terminal 13 f and the start-of-winding terminals 14 a and 14 e that are connected to 17 w are routed about a half turn along the flange 5.
[0054]
As shown in FIG. 9, the winding start terminal 14c is led out obliquely from a collar notch 19c provided in the collar 5c. After the winding 4c is wound around the magnetic pole teeth, it rises upward through the gaps in the inner peripheral groove 21 as shown in FIG.
[0055]
The winding end terminal 13f is folded back by a folding protrusion 20 provided at the lower right end of the flange portion 5b, and is called a winding start terminal 14c that passes through the inner periphery of the flange portion 5c and continues to the power connection line 17v. Withdrawn.
[0056]
Further, the winding start terminals 14a and 14e are called winding end terminals 13d and 13b connected to the power supply connecting lines 17w and 17u at the upper end portions of the flange notches 19d and 19b, respectively, and are drawn out in the outer peripheral direction.
[0057]
Then, the power supply connection lines 17w and 17u are respectively covered with the insulating tubes 16w and 16u, and the power supply connection lines 17u and 17w are folded back to the inner peripheral side of the flange portion 5 as shown in FIG. Is done. Further, the power connection line 17v is raised as it is and covered with the insulating tube 16v, and thereafter, the processing is performed as described above.
[0058]
As described above, according to the second embodiment, since the power connection lines 17u to 17w all crawl the inside of the flange portion 5, even if the insulating tube 16 is inserted into each of them and the outer diameter increases, It does not protrude from the outer peripheral portion of the portion 5, and damage when assembled in the frame is prevented.
[0059]
Next, a third embodiment will be described with reference to FIG.
Here, the power supply connection lines 17u to 17w are assumed on the premise that the windings 4a and 4d, 4b and 4e, 4c and 4f, which are mutually opposed in position, are connected in series in constituting the compressor motor stator. Insulation tubes 16u to 16w are put on after starting the winding of the electric wire connected to the terminal as a terminal.
[0060]
The left and right power supply connection lines 17u and 17w are led along the inner peripheral surface of the flange portion 5 described above, and the middle power supply connection line 17v is started up as it is. Then, it is twisted together with the power connection lines 17u and 17w derived from the left and right, and is raised upward.
[0061]
Therefore, even in a series-connected motor stator for a compressor, by using an electric wire connected to the power supply connection lines 17u to 17w as a winding start terminal, each terminal is pressed down by a winding wound thereafter and completely fixed. In addition, since it can be guided as it is along the flange portion 5 and led out to the starting position, the operation becomes very easy.
[0062]
【The invention's effect】
As described above, according to the present invention, when processing a winding terminal drawn directly from a winding as a power supply connection line, the use of an insulating member or a dedicated fixing member is suppressed as much as possible, and the direct material cost and the work man-hour are reduced. As a result, the reliability can be improved.
[Brief description of the drawings]
FIG. 1 is an external perspective view of a stator of an electric motor for a compressor, showing a first embodiment of the present invention.
FIG. 2 is a development view of the outer periphery of a flange portion in an insulating member that constitutes a part of the stator of the compressor motor, showing the embodiment;
FIG. 3 is a star parallel connection diagram of a compressor motor stator showing the same embodiment;
FIG. 4 is an actual wiring diagram of a compressor motor stator showing the same embodiment;
FIG. 5 is a view showing a flange outer peripheral surface of a power connection line rising portion, showing the embodiment;
FIG. 6 is a plan view showing a winding end terminal locking groove showing the embodiment;
FIG. 7 is a view showing an outer peripheral surface of a collar portion, showing a second embodiment.
FIG. 8 is a plan view of an electric motor stator showing the embodiment.
FIG. 9 is a view showing a state in which the winding start terminal is pulled out to the outer periphery of the collar portion, showing the embodiment;
FIG. 10 is a view showing a state in which the winding start terminal is raised through the groove portion after winding, showing the embodiment;
FIG. 11 is a series connection diagram of an electric 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]
1 ... Annular yoke,
2 ... Insulating member,
4a to 4f ... windings,
17u, 17v, 17w ... power connection line,
5a-5f ... buttocks,
15 ... locking claw part,
14a, 14c, 14e ... winding start terminal,
13b, 13d, 13f ... end of volume terminal,
10b, 10d, 10f ... end-of-winding terminal locking groove,
8a, 8c, 8e ... Winding terminal guide groove,
16u, 16v, 16w ... Insulating tube.

Claims (5)

An annular yoke iron core in which a plurality of magnetic pole teeth are radially disposed along the inner peripheral portion, and a winding wound around the pole teeth of the yoke iron core via an insulating member; In the stator of the motor for a compressor provided with a power connection line that is drawn from these windings and connected to each other to form a multiphase winding,
Winding terminals that are drawn directly from each of the above windings as power connection lines are drawn from adjacent windings , and are drawn from the remaining windings as power connection lines above the winding start terminal position of the predetermined winding. A stator for an electric motor for a compressor, which is twisted together and started together with a winding terminal . The stator of the motor for a compressor according to claim 1 , wherein the power connection line has a rising position at an upper part of a middle winding. A flange portion is provided at a position protruding from the end surface of the yoke core of the insulating member, and a pair of locking claws are provided on the flange portion. the locking claw portion standing raised along an inner circumferential surface of the collar portion through the lower of claim 1 and claims other power connection line, characterized in that is raised along the outer peripheral surface of the flange portion Item 3. A stator of an electric motor for a compressor according to any one of items 2 . Each of the windings is formed by connecting windings facing each other in parallel .
One power connection line of the winding is routed about half a circumference along the insulating member flange protruding from the end surface of the yoke iron core, and is fixed by a power connection terminal connected to the other winding. The stator of the motor for compressors according to claim 1 . Each of the windings is formed by connecting windings facing each other in series ,
2. The compressor motor stator according to claim 1 , wherein a power connection line connected to each winding is used as a winding start terminal.

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