CN103956871A - Stator punching piece and single-phase induction motor with same - Google Patents
Stator punching piece and single-phase induction motor with same Download PDFInfo
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- CN103956871A CN103956871A CN201410123315.5A CN201410123315A CN103956871A CN 103956871 A CN103956871 A CN 103956871A CN 201410123315 A CN201410123315 A CN 201410123315A CN 103956871 A CN103956871 A CN 103956871A
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Abstract
The invention discloses a stator punching piece and a single-phase induction motor with the stator punching piece. The stator punching piece comprises a body, wherein the body is provided with an inner hole and a plurality of stator grooves communicated with the inner hole, the multiple stator grooves are distributed in the circumferential direction of the inner hole at intervals, the adjacent stator grooves are separated through stator teeth, the inner ends of the stator teeth are respectively provided with a tooth boot, and an opening of each stator groove is located between the adjacent tooth boots of the adjacent stator teeth. The body is divided into a plurality of parts through the multiple reference straight lines which intersect and pass through the center of the inner hole. In each part, each stator tooth deviates by a preset distance relative to the center line of the tooth boot of the corresponding stator tooth in the direction from one reference straight line to the other reference straight line, and the lengths of the parts, extend to the openings of the stator grooves, of the tooth boots are different. When the stator punching piece is applied to the motor, the end span length of a secondary phase winding can be effectively shortened, the overall use quantity of copper wires is reduced, and the cost is lowered.
Description
Technical field
The present invention relates to field of motor manufacturing, especially relate to a kind of stator punching and there is its single phase induction motor.
Background technology
General two electrode structures that adopt of single phase induction motor for traditional freezer compressor, stator core has 24 stator slots, principal phase winding M and parafacies winding all adopt ceoncentrically wound coil, as shown in Figure 8, principal phase winding comprises 5 coils, pitch is respectively 11,9,7,5 and 3 grooves, and parafacies winding comprises 4 coils, and pitch is respectively 11,9,7 and 5 grooves.As shown in Figure 8, the tooth center line of stator tooth is all by the stator inner circle center of circle, and the facewidth equates simultaneously.Like this, will cause winding overhang span large, not only cause copper cash consumption more, winding resistance is also larger simultaneously, affects motor operational efficiency.
Summary of the invention
The present invention is intended at least solve one of technical problem existing in prior art.For this reason, one object of the present invention is to propose a kind of stator punching that reduces winding overhang span and do not affect motor runnability.
Another object of the present invention is to propose a kind of single phase induction motor with described stator punching.
According to a kind of stator punching of first aspect present invention embodiment, comprise: body, a plurality of stator slots that described body has endoporus and is communicated with described endoporus, a plurality of described stator slots are spaced apart by stator tooth along the circumferential spaced apart and adjacent stators groove of described endoporus, the inner of described stator tooth has tooth boots, the notch of wherein said stator slot is between the adjacent teeth boots of adjacent stators tooth, wherein said body is by intersecting each other and many consult straight lines at center by described endoporus are divided into a plurality of parts, therein in each part, described stator tooth is with respect to the center line of the tooth boots of this stator tooth, along from described consult straight line wherein to the direction skew preset distance of another described consult straight line, the length that described tooth boots extend to described notch is unequal.
By by stator tooth along from described consult straight line wherein to the direction skew certain distance of another described consult straight line, on the basis of runnability that does not affect motor, can effectively shorten the parafacies winding overhang length of span, reduce whole copper cash consumption, reduce cost.In addition, because the tooth boots length of stator tooth both sides is inconsistent, while being used for motor according to the stator punching of the embodiment of the present invention, can effectively weaken the cogging torque of motor, reduce vibration and the noise of motor in running.
According to one embodiment of present invention, described preset distance be less than described stator tooth width 1/2.
According to one embodiment of present invention, the outer end of described stator tooth is with respect to the inner of this stator tooth, along the direction rotation predetermined angular from described the first consult straight line to described the second consult straight line.Thus, by the rotation to stator tooth, also reduced the length of span of principal phase winding overhang, further reduced copper consumption, thereby further reduced cost.
Alternatively, described predetermined angular is 0-10 degree.
According to one embodiment of present invention, described body is divided into first to fourth part by the first consult straight line and the second consult straight line orthogonal and by described endoporus center, in each part of described first to fourth part, edge is from described the second consult straight line the direction of the first consult straight line, and the facewidth of described stator tooth reduces gradually.
According to one embodiment of present invention, in each part in described first to fourth part, the opening direction of the notch of described stator slot is parallel with the center line of stator tooth of a side that is positioned at contiguous described the second consult straight line of this stator slot.
Thus, by the opening direction of notch is changed, the line of fall direction in the time of can changing coiling winding, thus reduced end span, further reduce copper consumption, thereby further reduced cost.
According to one embodiment of present invention, in each part in described first to fourth part, described stator slot comprises along the sulculus of arranging to described the first consult straight line from described the second consult straight line, middle slot and vat, the degree of depth of described sulculus is less than the degree of depth of described middle slot, the degree of depth of described middle slot is less than the degree of depth of described vat, described stator slot in described first and the stator slot in described second portion are symmetrical with respect to described the second consult straight line, and symmetrical with respect to described the first consult straight line with the stator slot in described the 4th part, described stator slot in described third part and the stator slot in described first are symmetrical with respect to described the first consult straight line, and symmetrical with respect to described the second consult straight line with the stator slot in described the 4th part.
According to one embodiment of present invention, the exterior bottom wall that described stator slot is flat-bottom slot and described stator slot and the sidewall arc transition of this stator slot.
In sum, according to stator punching of the present invention, reduced the length of span of winding overhang, reduced copper consumption, thereby reduced cost.
A kind of single phase induction motor according to second aspect present invention embodiment, comprising: stator core, and described stator core consists of according to the stator punching described in first aspect present invention embodiment a plurality of; Winding, described winding technique is on described stator core and comprise principal phase winding and parafacies winding.
According to one embodiment of present invention, at least one in described a plurality of parts, edge is from wherein a described consult straight line is the direction of another adjacent described consult straight line, and the facewidth of described stator tooth reduces gradually.
Additional aspect of the present invention and advantage in the following description part provide, and part will become obviously from the following description, or recognize by practice of the present invention.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present invention and advantage accompanying drawing below combination obviously and is easily understood becoming the description of embodiment, wherein:
Fig. 1 is the schematic diagram of stator punching according to an embodiment of the invention;
Fig. 2 is the schematic diagram that Fig. 1 centre circle shows A portion;
Fig. 3 is the schematic diagram of stator punching in accordance with another embodiment of the present invention;
Fig. 4 is Fig. 3 and schematic diagram of the prior art;
Fig. 5 is the schematic diagram of stator punching in the single phase induction motor of another embodiment according to the present invention;
Fig. 6 is the schematic diagram of stator punching in the single phase induction motor of another embodiment according to the present invention;
Fig. 7 is C portion schematic diagram in Fig. 6;
Fig. 8 is the coiling schematic diagram of traditional stator punching, and wherein M represents principal phase winding, N vice phase winding.
Reference numeral:
Stator punching 100;
Body 1; Endoporus 10;
Stator slot 2; Notch 20; Sulculus 21; Middle slot 22; Vat 23;
Stator tooth 3; Tooth boots 31;
The first consult straight line X; The second consult straight line Y;
The P1 of first; Second portion P2;
Third part P3; The 4th part P4;
Stator tooth centre line L 1; Tooth boots centre line L 2
Embodiment
Describe embodiments of the invention below in detail, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has the element of identical or similar functions from start to finish.Below by the embodiment being described with reference to the drawings, be exemplary, only for explaining the present invention, and can not be interpreted as limitation of the present invention.
In description of the invention, it will be appreciated that, term " " center ", " width ", " vertically ", " level ", " interior ", " outward ", " clockwise ", " counterclockwise ", " axially ", " radially ", " circumferentially " etc. orientation or the position relationship of indication be based on orientation shown in the drawings or position relationship; be only the present invention for convenience of description and simplified characterization; rather than indication or the hint device of indication or element must have specific orientation, with specific orientation structure and operation, so can not be interpreted as limitation of the present invention.In addition, term " first ", " second " be only for describing object, and can not be interpreted as indication or hint relative importance or the implicit quantity that indicates indicated technical characterictic.Thus, one or more these features can be expressed or impliedly be comprised to the feature that is limited with " first ", " second ".In description of the invention, except as otherwise noted, the implication of " a plurality of " is two or more.
Below with reference to Fig. 1-Fig. 8, describe according to a kind of stator punching 100 of first aspect present invention embodiment.Wherein a plurality of stator punchings 100 laminate the stator core (scheming not shown) that forms motor, are wound with principal phase winding and parafacies winding on this stator core.
As shown in Figure 1, according to the stator punching 100 of the embodiment of the present invention, comprise body 1, a plurality of stator slots 2 that body 1 has endoporus 10 and is communicated with endoporus 10, a plurality of stator slots 2 are spaced apart by stator tooth 3 along the circumferential spaced apart and adjacent stators groove 2 of endoporus 10, the inner of stator tooth 3 has tooth boots 31, and wherein the notch 20 of stator slot 2 is between the adjacent teeth boots 31 of adjacent stators tooth 3.
As shown in figures 1 and 3, body 1 is by intersecting each other and many consult straight lines by endoporus 10 center are divided into a plurality of parts, in each part, along from a consult straight line wherein the direction of another adjacent consult straight line, stator tooth 3 is with respect to the center line of the tooth boots 31 of this stator tooth, along from wherein consult straight line is to the direction skew preset distance of another consult straight line, and the length that tooth boots 31 extend to notch 20 is unequal.By by stator tooth along from described consult straight line wherein to the direction skew certain distance of another described consult straight line, on the basis of runnability that does not affect motor, can effectively shorten the parafacies winding overhang length of span, reduce whole copper cash consumption, reduce cost.
In the following description, take stator punching 100 according to the present invention describes as example for the motor of freezer compressor.Wherein the stator core for the motor of freezer compressor has 24 stator slots.Like this, in each part of first to fourth part P1-P4, there are 6 stator slots.Now, as shown in figures 1 and 3, body 1 is divided into first to fourth part P1-P4 by the first consult straight line X and the second consult straight line Y orthogonal and by endoporus 10 center, a plurality of stator punchings 100 laminate form stator core and be wound with principal phase winding and parafacies winding after, the axis of principal phase winding overlaps with the second consult straight line Y, and the axis of parafacies winding overlaps with the first consult straight line X.
In each part in first to fourth part P1-P4, stator tooth 3 is with respect to the centre line L 2 of the tooth boots 31 of this stator tooth 3, along the direction skew preset distance from the second consult straight line Y to the first consult straight line X the journal offset of parafacies winding (towards), so as tooth boots 31 from the inner extended length of the first side of stator tooth 3 with unequal from the inner extended length of the second side of stator tooth 3.In one embodiment of the invention, the center line of stator tooth 3 is offset with respect to the centre line L 2 of the tooth boots 31 of this stator tooth 3, i.e. stator tooth 3 overall offset.The stator slot 2 of for example take in second portion P2 is when example describes, as shown in Figure 2, tooth boots 31 are greater than tooth boots 31 from the extended length in inner right side of stator tooth 3, in second portion P2 from the extended length in inner left side of stator tooth 3, right side is positioned at the clockwise direction in left side
The length of the tooth boots 31 of wherein mentioning in this application, refers to tooth boots 31 in the length making progress in week.Those skilled in the art are appreciated that, because the stator tooth at the first consult straight line X and the second consult straight line Y place is not all arranged in one of them part of first to fourth above-mentioned part P1-P4, now, the stator tooth at the first consult straight line X and the second consult straight line Y place can be offset also and can not be offset.
By stator tooth 3 is offset to certain angle to parafacies winding axis (i.e. the first consult straight line X), on the basis of runnability that does not affect motor, can effectively shorten the parafacies winding overhang length of span, reduced whole copper cash consumption, reduced cost.In addition, because the tooth boots length of stator tooth both sides is inconsistent, while being used for motor according to the stator punching of the embodiment of the present invention, can effectively weaken the cogging torque of motor, reduce vibration and the noise of motor in running.
Alternatively, above-mentioned preset distance be less than stator tooth 3 width 1/2.
In one embodiment of the invention, the outer end of stator tooth 3 is with respect to the inner of this stator tooth 3, along the direction rotation predetermined angular from the first consult straight line X to the second consult straight line Y.That is to say, as shown in Figure 3 and Figure 4, after tooth boots 31 skews at stator tooth 3 with respect to this stator tooth 3, the inner by the outer end of stator tooth 3 with respect to this stator tooth 3 is offset towards principal phase winding axis, as shown in Figure 4, now between the centre line L 2 of tooth boots 31 and the centre line L 1 of stator tooth 3, there is angle.Thus, by the rotation to stator tooth 3, also reduced the length of span of principal phase winding overhang, further reduced copper consumption, thereby further reduced cost.Alternatively, predetermined angular is 0-10 degree.
In further embodiment of the present invention, as shown in Figure 3, in each part in first to fourth part P1-P4, the opening direction of the notch 20 of stator slot 2 is parallel with the center line of stator tooth 3 of a side that is positioned at this stator slot 2 contiguous the second consult straight line Y, the stator slot 2 of for example take in second portion P2 is when example describes, and the opening direction of notch 20 is concordant with the centre line L 1 of stator tooth 3 that is positioned at its left side.Particularly, as shown in Figure 4, the stator slot that dotted line represents is stator slot of the prior art, what dotted arrow represented is the opening direction of stator slot in prior art, and the stator slot that solid line represents is according to the stator slot in the stator punching of the embodiment of the present invention, what dotted arrow represented is the opening direction of stator slot of the present invention.As can be seen from Figure, the opening direction of notch 20 is concordant with the centre line L 1 of stator tooth 3 that is positioned at its left side.
Thus, by the opening direction of notch 20 is changed, the line of fall direction in the time of can changing coiling winding, thus reduced end span, further reduce copper consumption, thereby further reduced cost.
In some embodiments of the invention, as depicted in figs. 1 and 2, in each part in first to fourth part P1-P4, stator slot 2 comprises along the sulculus 21 of arranging to the first consult straight line X from the second consult straight line Y, middle slot 22 and vat 23, the degree of depth of sulculus 21 is less than the degree of depth of middle slot 22, the degree of depth of middle slot 22 is less than the degree of depth of vat 23, stator slot 2 in the P1 of first is symmetrical with respect to the second consult straight line Y with the stator slot 2 in second portion P2, and symmetrical with respect to the first consult straight line X with the stator slot 2 in the 4th part P4, stator slot 2 in third part P3 is symmetrical with respect to the first consult straight line X with the stator slot 2 in the P1 of first, and symmetrical with respect to the second consult straight line Y with the stator slot 2 in the 4th part P4, in other words, stator slot 2 in third part P3 and the stator slot 2 in the P1 of first are with respect to the Central Symmetry of endoporus 10.
When during for the motor of freezer compressor, in each part of first to fourth part P1-P4, thering are 6 stator slots 2 according to the stator punching 100 of the embodiment of the present invention.The stator slot 2 of take in second portion P2 describes as example, and the direction from the second consult straight line Y to the first consult straight line X (being the clockwise direction Fig. 1 and Fig. 3) is upper, comprises the sulculus 21 being arranged in order, middle slot 22 and four vats 23.
Alternatively, after stator tooth 3 rotations, stator slot 2 forms the exterior bottom wall of flat-bottom slot and stator slot 2 and the sidewall arc transition of this stator slot 2, as shown in Figure 3 and Figure 4.
In sum, according to stator punching of the present invention, reduce the length of span of winding overhang, reduced copper consumption, thereby reduced cost, and increased the area of stator slot, guaranteed carrying out smoothly of coiling.
According to a kind of single phase induction motor of second aspect present invention embodiment, comprise: stator core and winding (scheming not shown), the stator punching 100 that stator core is described in a plurality of above-described embodiments forms, for example, by laminating formation, winding technique is on stator core and comprise principal phase winding and parafacies winding, and wherein the axis of principal phase winding and above-mentioned the second consult straight line Y overlap.Can be in freezer compressor according to the single phase induction motor of the embodiment of the present invention.
In some examples, at least one in a plurality of parts that the body 1 of stator punching 100 is separated out, edge is from wherein a consult straight line is the direction of another adjacent consult straight line therein, and the facewidth of stator tooth reduces gradually.Thus, by by wherein at least one part being separated out on body, along the width of stator tooth being reduced gradually the direction of another adjacent consult straight line from a consult straight line wherein, not only do not affect the runnability of motor, and can reduce the length of span of winding overhang, reduce copper consumption, thereby reduced cost.
Similarly, take stator punching 100 according to the present invention for the motor of freezer compressor during as example, body 1 is divided into first to fourth part P1-P4 by the first consult straight line X and the second consult straight line Y orthogonal and by endoporus 10 center, and wherein the first consult straight line X and the position of the second consult straight line Y on the stator tooth 3 at its place overlap with the center line of this stator tooth 3.In each part in first to fourth part, edge is from the second consult straight line Y the direction of the first consult straight line X, and the facewidth of stator tooth 3 reduces gradually.
Due in motor, more close lower away from the magnetic of the stator tooth of principal phase axis (i.e. the second consult straight line Y), therefore, by by each part in first to fourth part, along from the second consult straight line Y to the direction of the first consult straight line X, the width of stator tooth is reduced gradually, not only do not affect the runnability of motor, and can reduce the length of span of principal phase winding overhang, reduce copper consumption, thereby reduced cost.
Alternatively, the difference between the facewidth of adjacent stators tooth 3 is 0.15mm.For example, during for the motor of freezer compressor, the width of the stator tooth 3 that the second consult straight line Y passes through can be 4mm, and as shown in Figure 5, the width of the stator tooth 3 that now the first consult straight line X passes through is 3.1mm.
In one embodiment of the invention, as shown in Figure 5, the center line of stator tooth 3 passes through endoporus 10 center, that is to say, when the facewidth of stator tooth 3 gradually changes, the center line of stator tooth 3 still passes through endoporus 10 center.Like this, the width of the stator slot of corresponding position will increase, and has increased the area of stator slot, has guaranteed carrying out smoothly of coiling.
Certainly, the present invention is not limited to this.In another embodiment of the present invention, as shown in Figure 6 and Figure 7, the inner of stator tooth 3 has tooth boots 31, in at least one part in a plurality of parts, stator tooth 3 be take the side of this stator tooth 3 and the intersection point of tooth boots 31 as the center of circle, rotate up predetermined angular along the side from consult straight line wherein to another adjacent consult straight line.For example, when stator punching of the present invention is used for the motor of freezer compressor, in each part in first to fourth part, stator tooth 3 be take the side of this stator tooth 3 and the intersection point C of tooth boots 31 as the center of circle, rotate up predetermined angular along the side from the first consult straight line X to the second consult straight line Y, the direction rotation of this stator tooth 3 principal phase axis on stator core predetermined angular.Wherein those skilled in the art are appreciated that this predetermined angular can be chosen by the design parameter of concrete motor.Alternatively, predetermined angular is 0-10 degree.
Thus, by stator tooth 3 is rotated to an angle to principal phase winding axis (i.e. the second consult straight line Y), can further effectively shorten the principal phase winding overhang length of span.Although the parafacies winding overhang length of span increases, at freezer compressor, use in single phase induction motor, large 3 to 4 times than parafacies winding proportion of principal phase winding proportions, therefore whole copper cash consumption has still reduced, and that is to say, has further reduced cost.
According to other configuration examples of the single phase induction motor of the embodiment of the present invention, if the coiling of principal phase winding and parafacies winding etc. and operation are all known for those of ordinary skills, be not described in detail here.
In the description of this specification, the description of reference term " embodiment ", " some embodiment ", " illustrative examples ", " example ", " concrete example " or " some examples " etc. means to be contained at least one embodiment of the present invention or example in conjunction with specific features, structure, material or the feature of this embodiment or example description.In this manual, the schematic statement of above-mentioned term is not necessarily referred to identical embodiment or example.And the specific features of description, structure, material or feature can be with suitable mode combinations in any one or more embodiment or example.
Although illustrated and described embodiments of the invention, those having ordinary skill in the art will appreciate that: in the situation that not departing from principle of the present invention and aim, can carry out multiple variation, modification, replacement and modification to these embodiment, scope of the present invention is limited by claim and equivalent thereof.
Claims (10)
1. a stator punching, is characterized in that, comprising:
Body, a plurality of stator slots that described body has endoporus and is communicated with described endoporus, a plurality of described stator slots are spaced apart by stator tooth along the circumferential spaced apart and adjacent stators groove of described endoporus, the inner of described stator tooth has tooth boots, the notch of wherein said stator slot is between the adjacent teeth boots of adjacent stators tooth, wherein
Described body is by intersecting each other and many consult straight lines at center by described endoporus are divided into a plurality of parts, therein in each part, described stator tooth is with respect to the center line of the tooth boots of this stator tooth, along from wherein described consult straight line is to the direction skew preset distance of another described consult straight line, and the length that described tooth boots extend to described notch is unequal.
2. stator punching according to claim 1, is characterized in that, described preset distance be less than described stator tooth width 1/2.
3. stator punching according to claim 1, is characterized in that, the outer end of described stator tooth is with respect to the inner of this stator tooth, along the direction rotation predetermined angular from described the first consult straight line to described the second consult straight line.
4. stator punching according to claim 3, is characterized in that, described predetermined angular is 0-10 degree.
5. according to the stator punching described in any one in claim 1-4, it is characterized in that, described body is divided into first to fourth part by the first consult straight line and the second consult straight line orthogonal and by described endoporus center, in each part of described first to fourth part, edge is from described the second consult straight line the direction of the first consult straight line, and the facewidth of described stator tooth reduces gradually.
6. stator punching according to claim 5, it is characterized in that, in each part in described first to fourth part, the opening direction of the notch of described stator slot is parallel with the center line of stator tooth of a side that is positioned at contiguous described the second consult straight line of this stator slot.
7. stator punching according to claim 6, it is characterized in that, in each part in described first to fourth part, described stator slot comprises along the sulculus of arranging to described the first consult straight line from described the second consult straight line, middle slot and vat, the degree of depth of described sulculus is less than the degree of depth of described middle slot, the degree of depth of described middle slot is less than the degree of depth of described vat, described stator slot in described first and the stator slot in described second portion are symmetrical with respect to described the second consult straight line, and symmetrical with respect to described the first consult straight line with the stator slot in described the 4th part, described stator slot in described third part and the stator slot in described first are symmetrical with respect to described the first consult straight line, and symmetrical with respect to described the second consult straight line with the stator slot in described the 4th part.
8. stator punching according to claim 1, is characterized in that, described stator slot is the exterior bottom wall of flat-bottom slot and described stator slot and the sidewall arc transition of this stator slot.
9. a single phase induction motor, is characterized in that, comprising:
Stator core, described stator core consists of according to the stator punching described in any one in claim 1-7 a plurality of;
Winding, described winding technique is on described stator core and comprise principal phase winding and parafacies winding.
10. single phase induction motor according to claim 9, it is characterized in that, in at least one in described a plurality of parts, edge is from wherein a described consult straight line is the direction of another adjacent described consult straight line, and the facewidth of described stator tooth reduces gradually.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410123315.5A CN103956871B (en) | 2014-03-28 | 2014-03-28 | Stator punching and there is its single phase induction motor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410123315.5A CN103956871B (en) | 2014-03-28 | 2014-03-28 | Stator punching and there is its single phase induction motor |
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| CN103956871A true CN103956871A (en) | 2014-07-30 |
| CN103956871B CN103956871B (en) | 2017-12-08 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110544994A (en) * | 2018-05-28 | 2019-12-06 | 上海鸣志电器股份有限公司 | Stepping motor stator and stepping motor with same |
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| CN202940650U (en) * | 2012-11-08 | 2013-05-15 | 成都微精电机股份公司 | Stator punching sheet of alternating current motor |
| CN103227522A (en) * | 2013-04-28 | 2013-07-31 | 安徽美芝制冷设备有限公司 | Efficient aluminum conductor machine of refrigerator compressor |
| CN203883642U (en) * | 2014-03-28 | 2014-10-15 | 广东威灵电机制造有限公司 | Stator lamination and single-phase induction motor having the same |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110544994A (en) * | 2018-05-28 | 2019-12-06 | 上海鸣志电器股份有限公司 | Stepping motor stator and stepping motor with same |
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