CN211958884U - Stator fixing structure and electronic water pump using same - Google Patents
Stator fixing structure and electronic water pump using same Download PDFInfo
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- CN211958884U CN211958884U CN202021077618.5U CN202021077618U CN211958884U CN 211958884 U CN211958884 U CN 211958884U CN 202021077618 U CN202021077618 U CN 202021077618U CN 211958884 U CN211958884 U CN 211958884U
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Abstract
The utility model discloses a stator fixed knot constructs and uses this stator fixed knot to construct electronic water pump, including stator cavity and inserted sheet support. The stator cavity is suitable for containing a stator core, a positioning column is arranged in the stator cavity along the central axis direction of the stator cavity, and the positioning column is suitable for being inserted into the stator core from one end of the stator core along the axial direction of the stator core; the inserting sheet support is suitable for being inserted into the stator core from the other end of the stator core along the axial direction of the stator core, and the part of the inserting sheet support inserted into the stator core is suitable for being tightly matched with the positioning column in an inserting manner; the insert bracket has an abutting surface adapted to abut the stator core. The utility model discloses can improve the fastening positioning effect of stator.
Description
Technical Field
The utility model relates to an automobile-used accessory technical field especially relates to a stator fixed knot constructs and uses this stator fixed knot to construct's electronic water pump.
Background
In consideration of energy conservation and emission reduction, especially in order to meet the national emission standard, more and more whole vehicles and factories autonomously develop engines, especially engines with turbochargers, which have emission advantages. However, in the case of an engine with a turbocharger, in order to maintain the service life of the turbine as long as possible due to the extremely high temperature environment during operation of the turbine, it is necessary to provide an electronic water pump for cooling the turbine, and such a water pump is operated after parking. However, with the increasing popularization of the vehicle start-stop function, the electronic water pump is also required to be cooled in the frequent start-stop process of the vehicle, which also puts higher requirements on the temperature-resistant reliability of the electronic water pump. The existing electronic water pump is in an environment with continuous high temperature and vibration, because the difference of linear expansion coefficients caused by different materials of the iron core and the motor shell is large, a gap is generated between the iron core and the motor shell, and at the moment, if the stator is not fixedly positioned, the stator can be loosened, so that the winding is collided with the motor shell, and finally, the problem that the winding is burnt due to turn-to-turn short circuit after being injured is caused.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a first purpose provides a stator fixed knot constructs to solve the technical problem who improves the fastening positioning effect of stator.
A second object of the utility model is to provide an electronic water pump to solve the technical problem who improves the fastening positioning effect of stator.
The utility model discloses a stator fixed knot constructs and is realized like this:
a stator fixing structure comprising:
the stator cavity is suitable for containing a stator core, a positioning column is arranged in the stator cavity along the central axis direction of the stator cavity, and the positioning column is suitable for being inserted into the stator core from one end of the stator core along the axial direction of the stator core;
the inserting sheet support is suitable for being inserted into the stator core from the other end of the stator core along the axial direction of the stator core, and the part of the inserting sheet support inserted into the stator core is suitable for being in inserted tight fit with the positioning column; the insert bracket has an abutting surface adapted to abut against the stator core.
In a preferred embodiment of the present invention, the insert holder includes a first column, a second column and a third column of a columnar structure, which are coaxially connected in sequence;
the outer diameter of the first cylinder is larger than that of the second cylinder so as to form a first annular step between the first cylinder and the second cylinder; and
the outer diameter of the second cylinder is larger than that of the third cylinder so as to form a second annular step between the second cylinder and the third cylinder; and the end surface of the second annular step facing the third column is the abutting surface.
In a preferred embodiment of the present invention, a protruding portion of a circular ring structure is disposed on an end surface of the third column body away from the second column body, and the protruding portion and the third column body are coaxially distributed;
a third annular step is formed between the circumferential outer end of the convex part and the shaft end of the third cylinder, which is far away from the second cylinder; and
the first cylinder, the second cylinder, the third cylinder and the boss are integrally communicated with a hollow shaft hole, and the shaft hole is suitable for a fastening screw to penetrate through.
In a preferred embodiment of the present invention, the positioning column is provided with a hollow cavity suitable for the insertion of the protruding portion along an axial direction thereof from an end portion thereof facing the insert holder; and
the third annular step is adapted to abut an end of the locating post after the boss is inserted into the cavity.
In a preferred embodiment of the present invention, the first column is further provided with a jack for placing an insert;
the inserting sheet is also suitable for being matched and connected with a control panel; and
a screw hole communicated with the cavity is formed in the positioning column along the axial direction of the positioning column;
the fastening screw is suitable for penetrating the control panel and the inserting piece support in sequence and then inserting into the positioning column.
In a preferred embodiment of the present invention, the protruding portion includes at least two arc-shaped bosses circumferentially distributed and spaced apart from each other; and the at least two arc-shaped bosses are made of plastic materials.
In a preferred embodiment of the present invention, the radial cross section of the cavity is a D-shaped structure; and
and a milling plane is arranged on the axial side wall of the bulge part so that the bulge part is matched with a cavity with a D-shaped radial section.
In a preferred embodiment of the present invention, the outer sidewall of the positioning column has a milled flat end along the axial direction thereof so that the radial cross section of the positioning column is a D-shaped structure; and
the outer side wall of the third cylinder is provided with a milled flat wall which is suitable for corresponding to the milled flat end of the positioning column along the axial direction of the outer side wall, so that the radial section of the third cylinder is of a D-shaped structure.
In a preferred embodiment of the present invention, at least one anti-rotation rib is disposed on the inner sidewall of the stator cavity and axially distributed along the inner sidewall.
The utility model discloses an electronic pump is realized like this:
an electronic water pump comprising: the stator fixing structure is arranged in the machine shell, and the rotor cavity and the rotor assembly are suitable for being matched and connected with the rotor cavity.
By adopting the technical scheme, the utility model discloses following beneficial effect has: the utility model discloses a stator fixed knot constructs and uses this stator fixed knot to construct's electronic water pump realizes fastening the location of stator core through the cooperation of inserted sheet support with the stator chamber, and concrete joining in marriage by bellying and reference column and to realize the location to stator core's circumferencial direction to and combining the bellying through fastening screw and realize the axial location fastening effect to stator core, thereby prevent that stator core from appearing not hard up problem in the use.
In addition, the end of milling flat that further passes through the lateral wall of reference column combines the only commentaries on classics muscle that is equipped with on the inside wall in stator cavity can play the pivoted backstop effect to stator core's circumference angle jointly to make stator core all firmly fixed a position from the angle of axial and circumference, even can not take place not hard up under the condition of generating heat and vibration yet.
Drawings
Fig. 1 is a schematic sectional view of a stator fixing structure according to the present invention;
FIG. 2 is an enlarged view of section I of FIG. 1;
fig. 3 is a first view schematic diagram of the insert holder of the stator fixing structure of the present invention;
fig. 4 is a second view schematically illustrating the insert holder of the stator fixing structure according to the present invention;
fig. 5 is a third view schematic diagram of the insert holder of the stator fixing structure of the present invention;
fig. 6 is a schematic cross-sectional structural view of a stator cavity of the stator fixing structure of the present invention;
fig. 7 is a fourth view schematically illustrating the insert holder of the stator fixing structure according to the present invention;
fig. 8 is a first view schematically illustrating the casing of the stator fixing structure according to the present invention;
fig. 9 is a schematic cross-sectional view of the stator fixing structure of the present invention applied to an electronic water pump;
fig. 10 is an exploded view of the stator fixing structure of the present invention;
fig. 11 is the intention of the matching mechanism between the insert sheet bracket and the control panel and the insert sheet of the stator fixing structure of the present invention.
In the figure: casing 1, rotor chamber 2, motor shaft 3, inserted sheet 4, rotor subassembly 5, stator chamber 6, reference column 7, first cylinder 8, second cylinder 9, third cylinder 10, first annular step X, second annular step Y, butt face M, third annular step K, shaft hole 11, fastening screw 12, cavity 13, bellying 14, jack 15, screw hole 17, arc boss 18, clearance 19, mill plane E, mill flat end F, mill flat wall G, spline 20, control panel 21, stator core 22.
Detailed Description
In order that the present invention may be more readily and clearly understood, the following detailed description of the present invention is provided in connection with the accompanying drawings.
Example 1:
referring to fig. 1 to 11, the present embodiment provides a stator fixing structure, including: a stator cavity 6 adapted to receive the stator core 22 and a tab holder adapted to securely position the stator core 22 within the stator cavity 6 from the axial direction of the stator core 22.
Specifically, first, a positioning column 7 is disposed in the stator cavity 6 along the central axis direction of the stator cavity 6, and the positioning column 7 is adapted to be inserted into the stator core 22 from one end of the stator core 22 along the axial direction of the stator core 22, that is, after the positioning column 7 is inserted into the stator core 22, the stator core 22 forms a circumferential cladding structure for the positioning column 7.
Next, the tab holder is adapted to be inserted into the stator core 22 from the other end of the stator core 22 in the axial direction of the stator core 22. The part of the insert support inserted into the stator core 22 is suitable for being tightly matched with the positioning column 7 in an inserted manner; the tab holder has an abutment surface M adapted to abut the stator core 22. That is to say the tab holder and the inner cavity bottom wall of the stator cavity 6 together form a pressed position from both axial ends of the stator core 22, so that the stator core 22 is securely positioned between the tab holder and the stator cavity 6.
In detail, the insert support comprises a first column body 8, a second column body 9 and a third column body 10 which are coaxially connected in sequence and have a columnar structure; the first cylinder 8, the second cylinder 9 and the third cylinder 10 can be integrally formed, so that the convenience of processing is improved. Wherein the outer diameter of the first cylinder 8 is greater than the outer diameter of the second cylinder 9 to form a first annular step X between the first cylinder 8 and the second cylinder 9; and the outer diameter of the second cylinder 9 is greater than the outer diameter of the third cylinder 10 to form a second annular step Y between the second cylinder 9 and the third cylinder 10; that is, the first column 8, the second column 9 and the third column 10 together form a stepped structure therebetween. Here, the third column 10 is suitable for being inserted into the stator core 22, and an end surface of the second annular step Y facing the third column 10 is an abutting surface M.
Taking an alternative implementation case as an example: the plug-in fit between the blade holder and the positioning post 7 for this embodiment is achieved in the following manner. A bulge 14 of a circular ring structure which is coaxially distributed with the third column 10 is arranged on the end surface of the third column 10 far away from the second column 9; a third annular step K is formed between the circumferential outer end of the convex part 14 and the shaft end of the third cylinder 10 far away from the second cylinder 9; and a hollow shaft hole 11 is integrally penetrated through the first column 8, the second column 9, the third column 10 and the boss 14, and the shaft hole 11 is suitable for a fastening screw 12 to pass through. The fastening screw 12 is a self-tapping screw, and the fastening screw 12 is adapted to be inserted into the positioning column 7 after passing through the insert support, so that the insert support and the positioning column 7 are tightly fixed by the fastening screw 12.
Furthermore, the positioning column 7 is provided with a hollow cavity 13 suitable for the insertion of the convex part 14 along the axial direction thereof from the end part thereof facing the insert holder; and the third annular step K is adapted to abut against the end of the positioning post 7 after the projection 14 has been inserted into the cavity 13. It should be noted that the axial depth of the cavity 13 may be slightly greater than the vertical height of the protruding portion 14 relative to the third positioning post 7, because the abutment between the third annular step K and the end of the positioning post 7 makes the axial depth of the cavity 13 greater than the height of the protruding portion 14 not affect the tight fitting effect between the insert holder and the positioning post 7 in the axial direction.
It should be noted that, for the present embodiment, the height of the protrusion 14 relative to the third column 10 is preferably half of the circumferential diameter of the protrusion 14, so that the strength of the protrusion 14 can be effectively ensured, and the tight fit effect between the protrusion 14 and the cavity 13 can be optimized.
Furthermore, the first column 8 of this embodiment is further provided with a jack 15 for placing the insert 4; the insert is also suitable for matching and fixing with a control panel 21, where the insert 4 can be fixed and connected with the control panel 21 by, for example, but not limited to, welding and fixing; and a screw hole 17 which is communicated with the cavity 13 is arranged in the positioning column 7 along the axial direction, namely, a fastening screw 12 is suitable for being inserted into the positioning column 7 after sequentially passing through the control plate 21 and the insert support, and the fastening screw 12 is finally inserted into the screw hole 17 after passing through the cavity 13 in the process of inserting the positioning column 7.
In addition, the protruding portion 14 of the present embodiment includes at least two arc-shaped protruding portions 18 distributed circumferentially and arranged at intervals, and the drawing of the present embodiment exemplifies an optional four arc-shaped protruding portions 18. It should be noted that, here, a gap 19 exists between every two adjacent arc-shaped bosses 18, and in the case that the boss 14 is not coupled with the fastening screw 12, the hole diameter of the shaft hole 11 of the boss 14 is smaller than the outer diameter of the fastening screw 12, that is, when the fastening screw 12 needs to pass through the shaft hole 11 of the boss 14, the fastening screw 12 exerts an expanding force on the arc-shaped bosses 18 along the radial direction of the boss 14 and toward the direction away from the center of the boss 14. In the process of inserting the integral protruding portion 14 into the cavity 13 of the positioning column 7, after the inserting and connecting cooperation between the protruding portion 14 and the cavity 13 of the positioning column 7 is completed, when the fastening screw 12 passes through the protruding portion 14 and is inserted into the screw hole 17, the fastening screw 12 generates radial outward expansion force on the protruding portion 14, so that the protruding portion 14 can utilize a gap 19 between every two adjacent arc-shaped bosses 18 to realize outward expansion of the arc-shaped protrusions in the direction away from the center of the circle of the protruding portion 14 and cling to the cavity wall of the inner cavity of the positioning column 7, and therefore the tight fit effect between the insert sheet support and the positioning column 7 on the radial surface of the positioning column 7 is achieved. The axial connecting effect between the control panel, the inserting sheet support and the positioning column 7 realized by combining the fastening screw 12 is realized, so that the problem of looseness of the matching between the inserting sheet support and the positioning column 7 can not be caused no matter along the axial direction or the radial direction of the positioning column 7.
Preferably, the arc-shaped boss 18 of the present embodiment is made of a plastic material, such as but not limited to a nylon material with better plasticity. Of course, considering the convenience and high efficiency of the processing, for the protruding portion 14 of the present embodiment, the protruding portion 14, the first column 8, the second column 9, and the third column 10 can be integrally formed, and all of the four can be made of the same plastic material, that is, the entire insert holder is made of the plastic material. Under such structure for fastening screw 12 passes control panel and inserted sheet support in proper order and inserts the in-process in the reference column 7 again, utilizes fastening screw 12's external diameter to rise the shaft hole 11 of tight inserted sheet support, relies on the toughness of inserted sheet support material itself again, makes the inserted sheet support and the reference column 7 between the two part to inserting the part can fasten, even can not take place not hard up under the circumstances of generating heat and vibration.
Example 2:
on the basis of the stator fixing structure in embodiment 1, the radial cross section of the cavity 13 of the stator fixing structure provided in this embodiment is a D-shaped structure; and a milling plane E is arranged on the axial side wall of the lug boss 14 so that the lug boss 14 is matched with the cavity 13 with the radial section of a D-shaped structure. The significance of this is to prevent relative rotation problems after engagement between the boss 14 and the cavity 13.
Furthermore, in view of preventing the stator core 22 from rotating in the stator cavity 6, the outer side wall of the positioning column 7 of the present embodiment has a milled flat end F along the axial direction thereof so that the radial cross section of the positioning column 7 is a D-shaped structure; and the outer side wall of the third cylinder 10 has a milled flat wall G along its axial direction adapted to correspond to the milled flat end F of the positioning post 7 so that the radial section of the third cylinder 10 is a D-shaped structure. That is to say, the cooperation of the milled flat end F and the milled flat wall G makes the contact surface formed between the outer side wall of the insert holder and the positioning column 7 and the stator core 22 not be a circumferential contact surface, thereby playing a role in preventing the stator core 22 from rotating.
In a further alternative embodiment, the inner sidewall of the stator cavity 6 is provided with at least one rotation stopping rib 20 axially distributed along the inner sidewall. The rotation stop ribs 20 are also designed to prevent the stator core 22 from rotating within the stator cavity 6. Specifically, the rotation preventing rib 20 may be matched with the milled flat end F of the positioning column 7 and the milled flat wall G of the third column 10 to achieve rotation prevention of the stator core 22, or may be implemented separately, and this embodiment is not limited in any way.
Example 3:
on the basis of the stator fixing structure of embodiment 1 or embodiment 2, the present embodiment provides an electronic water pump including: the stator structure of the embodiment 1 or 2 comprises a machine shell 1, a stator fixing structure of the embodiment 1 or 2 arranged in the machine shell 1, a rotor cavity 2 and a rotor assembly 5 adapted to be matched with the rotor cavity 2. Rotor chamber 2 is used for placing rotor subassembly 5, restricts the axial displacement of rotor subassembly 5 through motor shaft 3, and the flowing medium can move about in rotor chamber 2 during circular telegram work, throws away the medium through the rotation of rotor subassembly 5.
The above embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above embodiments are only examples of the present invention, and are not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
In the description of the present invention, it is to be understood that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and do not indicate or imply that the equipment or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the present disclosure, unless otherwise expressly stated or limited, the first feature may comprise both the first and second features directly contacting each other, and also may comprise the first and second features not being directly contacting each other but being in contact with each other by means of further features between them. Also, the first feature being above, on or above the second feature includes the first feature being directly above and obliquely above the second feature, or merely means that the first feature is at a higher level than the second feature. A first feature that underlies, and underlies a second feature includes a first feature that is directly under and obliquely under a second feature, or simply means that the first feature is at a lesser level than the second feature.
Claims (10)
1. A stator fixing structure characterized by comprising:
the stator cavity is suitable for containing a stator core, a positioning column is arranged in the stator cavity along the central axis direction of the stator cavity, and the positioning column is suitable for being inserted into the stator core from one end of the stator core along the axial direction of the stator core;
the inserting sheet support is suitable for being inserted into the stator core from the other end of the stator core along the axial direction of the stator core, and the part of the inserting sheet support inserted into the stator core is suitable for being in inserted tight fit with the positioning column; the insert bracket has an abutting surface adapted to abut against the stator core.
2. The stator fixing structure according to claim 1, wherein the insert holder comprises a first column, a second column and a third column of a columnar structure which are coaxially connected in sequence;
the outer diameter of the first cylinder is larger than that of the second cylinder so as to form a first annular step between the first cylinder and the second cylinder; and
the outer diameter of the second cylinder is larger than that of the third cylinder so as to form a second annular step between the second cylinder and the third cylinder; and the end surface of the second annular step facing the third column is the abutting surface.
3. The stator fixing structure according to claim 2, wherein a boss of a circular ring structure is provided on an end surface of the third cylinder away from the second cylinder, the boss being coaxially distributed with the third cylinder;
a third annular step is formed between the circumferential outer end of the convex part and the shaft end of the third cylinder, which is far away from the second cylinder; and
the first cylinder, the second cylinder, the third cylinder and the boss are integrally communicated with a hollow shaft hole, and the shaft hole is suitable for a fastening screw to penetrate through.
4. The stator fixing structure according to claim 3, wherein the positioning column is provided with a hollow cavity suitable for the protrusion part to insert in along the axial direction of the positioning column from the end part of the positioning column facing the insert sheet support; and
the third annular step is adapted to abut an end of the locating post after the boss is inserted into the cavity.
5. The stator fixing structure according to claim 4, wherein the first column body is further provided with a jack for placing an insert;
the inserting sheet is also suitable for being matched and connected with a control panel; and
a screw hole communicated with the cavity is formed in the positioning column along the axial direction of the positioning column;
the fastening screw is suitable for penetrating the control panel and the inserting piece support in sequence and then inserting into the positioning column.
6. The stator fixing structure according to claim 5, wherein the boss includes at least two arc-shaped bosses circumferentially distributed and spaced apart from each other; and the at least two arc-shaped bosses are made of plastic materials.
7. The stator fixing structure according to any one of claims 4 to 6, wherein the radial cross section of the cavity is a D-shaped structure; and
and a milling plane is arranged on the axial side wall of the bulge part so that the bulge part is matched with a cavity with a D-shaped radial section.
8. The stator fixing structure according to claim 2, wherein the outer side wall of the positioning column has a milled end along the axial direction thereof so that the radial section of the positioning column is a D-shaped structure; and
the outer side wall of the third cylinder is provided with a milled flat wall which is suitable for corresponding to the milled flat end of the positioning column along the axial direction of the outer side wall, so that the radial section of the third cylinder is of a D-shaped structure.
9. The stator fixing structure according to claim 1, wherein at least one anti-rotation rib is disposed on an inner sidewall of the stator cavity and distributed along an axial direction thereof.
10. An electronic water pump, comprising: a housing, a stator mounting structure according to any one of claims 1 to 9 provided in the housing, a rotor cavity and a rotor assembly adapted to mate with the rotor cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021077618.5U CN211958884U (en) | 2020-06-12 | 2020-06-12 | Stator fixing structure and electronic water pump using same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021077618.5U CN211958884U (en) | 2020-06-12 | 2020-06-12 | Stator fixing structure and electronic water pump using same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211958884U true CN211958884U (en) | 2020-11-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021077618.5U Active CN211958884U (en) | 2020-06-12 | 2020-06-12 | Stator fixing structure and electronic water pump using same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211958884U (en) |
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2020
- 2020-06-12 CN CN202021077618.5U patent/CN211958884U/en active Active
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