Motor stator for electronic oil pump

Abstract

A motor stator for an electronic oil pump comprises a stator framework, a stator lamination assembly, a conducting strip, a wiring terminal and a grounding terminal, the stator framework comprises an upper framework, a lower framework and a connecting assembly, the connecting assembly comprises a connecting frame and a limiting column mechanism, and the limiting column mechanism comprises at least one set of limiting columns. A containing cavity formed by the upper framework is communicated with a containing cavity formed by the limiting column, an elastic clamping plate is further arranged in the containing cavity of the limiting column, the stator lamination assembly comprises at least one set of stator laminations, the conducting strip is arranged in the containing cavity of the limiting column, and the grounding terminal is communicated with the grounding body through the conducting strip. One end of the grounding terminal penetrates through the top end of the upper framework and extends, the other end of the grounding terminal is connected to the interior of the connection assembly, one end of the grounding terminal is provided with a protrusion, the grounding terminal is further provided with a groove, and the groove is clamped and matched with the elastic clamping plate. And the connection stability and the use safety between the grounding terminal and the grounding body are improved.

Description

A motor stator for an electronic oil pump Technical Field

[0001] This application relates to the field of mechanical equipment technology, and in particular to a motor stator for an electronic oil pump. Background Technology

[0002] With the rapid development of the vehicle industry, electronic oil pumps are widely used in vehicle lubrication and / or cooling systems. Electronic oil pumps mainly provide a power source for vehicle lubrication and / or cooling systems. Electronic oil pumps include stator assemblies. Traditional stator assemblies are usually equipped with grounding terminals for connecting to the grounding body.

[0003] In the existing technology, the grounding terminal is directly abutted against the grounding body to meet the connection between the terminal and the grounding body. Its contact area and contact pressure are small, resulting in high contact resistance at the contact position, high temperature rise, and even local red-hot, burning the connection position between the grounding terminal and the grounding body, leading to the failure of the grounding terminal, poor connection stability and poor safety in use. Summary of the Invention

[0004] This utility model embodiment provides a motor stator for an electronic oil pump, which improves the connection stability and safety of the stator assembly between the grounding terminal and the grounding body during use.

[0005] To achieve the aforementioned objectives, this application adopts the following technical solution:

[0006] A motor stator for an electronic oil pump, characterized in that it includes...

[0007] A stator frame, comprising an upper frame, a lower frame, and a connecting assembly connecting the upper and lower frames, wherein the upper frame has an internal cavity, the connecting assembly comprises a connecting frame and a limiting post mechanism connected to the connecting frame, the limiting post mechanism comprises at least one set of limiting posts, and the limiting post also has an internal cavity, the internal cavity of the upper frame being connected to the internal cavity of the limiting post, and the internal cavity of the internal cavity of the limiting post being further provided with an elastic retaining plate;

[0008] A stator lamination assembly and a conductive sheet are connected to the stator frame. The stator lamination assembly includes at least one set of stator laminations, and the conductive sheet is disposed inside the receiving cavity of the limiting post.

[0009] The stator frame is connected to a wiring terminal and a grounding terminal. The grounding terminal is connected to a grounding body through the conductive sheet. The grounding terminal is connected to the upper frame and the connecting assembly. One end of the grounding terminal passes through the top of the upper frame and extends therein. The other end of the grounding terminal is connected to the interior of the connecting assembly. The end of the grounding terminal near the end connected to the connecting assembly has a protrusion. The side of the grounding terminal opposite to the protrusion also has a groove. The groove engages with the elastic retaining plate.

[0010] In some optional embodiments, the top of the upper frame is also provided with a connecting hole, and a top hole is provided on the side wall of one of the limiting posts. The grounding terminal passes through the connecting hole, extends through the top of the upper frame, and the protrusion abuts and engages with the top hole.

[0011] In some alternative embodiments, the cross-sectional shape of the limiting post is trapezoidal.

[0012] In some optional embodiments, the elastic clamping plate includes a limiting part and an inclined clamping part. The cavity of the limiting post is further provided with at least one set of limiting pieces and at least one limiting ring. The limiting part of the elastic clamping plate is clamped by the mutual cooperation between the limiting pieces and the mutual cooperation between the limiting pieces and the limiting ring.

[0013] In some alternative embodiments, the angle between the inclined card portion and the vertical direction is α, where 30° < α < 45°.

[0014] In some alternative embodiments, the distance between the center of the protrusion and the bottom of the grounding terminal is h, 1 cm. <h<3cm。

[0015] In some alternative implementations, a set of the limiting posts includes at least twelve of the limiting posts.

[0016] In some alternative embodiments, the stator laminations are connected between the connecting frame and the limiting post mechanism.

[0017] In some alternative embodiments, the stator laminations are provided with connecting grooves that cooperate with the limiting posts.

[0018] In some alternative implementations, the connecting groove is trapezoidal in shape.

[0019] The motor stator for an electronic oil pump provided in this application has the following advantages:

[0020] The technical solution adopted in this application includes a motor stator for an electronic oil pump, comprising a stator frame, a stator lamination assembly, conductive plates, terminals, and a grounding terminal. The stator frame includes an upper frame, a lower frame, and a connecting assembly. The connecting assembly includes a connecting frame and a limiting post mechanism. The limiting post mechanism includes at least one set of limiting posts. The accommodating cavity formed by the upper frame is connected to the accommodating cavity formed by the limiting posts. An elastic retaining plate is also provided inside the accommodating cavity of the limiting posts. The stator lamination assembly includes at least one set of stator laminations. The conductive plates are disposed inside the accommodating cavity of the limiting posts. The grounding terminal is connected to the grounding body through the conductive plates. One end of the grounding terminal passes through the top of the upper frame and extends thereafter. The other end of the grounding terminal is connected to the interior of the connecting assembly. One end of the grounding terminal has a protrusion, and the grounding terminal also has a groove. The groove engages with the elastic retaining plate, achieving a tight fit between the grounding terminal and the conductive plates during use. This increases the contact area between the grounding terminal and the conductive plates, reduces contact resistance and temperature rise, and prevents grounding terminal failure, thereby improving the connection stability and safety of the grounding terminal. Attached Figure Description

[0021] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0022] Figure 1 is a perspective view of a motor stator for an electronic oil pump according to this application;

[0023] Figure 2 is a cross-sectional view of a limiting column in the motor stator of an electronic oil pump according to this application;

[0024] Figure 3 is an enlarged view of circle A shown in Figure 2;

[0025] Figure 4 is a cross-sectional structural diagram of the elastic retaining plate and grounding terminal in the motor stator of an electronic oil pump according to this application;

[0026] Figure 5 is a cross-sectional structural diagram of the elastic retaining plate, limiting piece and limiting ring in the motor stator of an electronic oil pump according to this application;

[0027] Figure 6 is a perspective view of an elastic retaining plate in the motor stator of an electronic oil pump according to this application;

[0028] Figure 7 is a perspective view of the stator laminations in a motor stator for an electronic oil pump according to this application;

[0029] Figure 8 is a partial structural diagram of the grounding terminal of a motor stator for an electronic oil pump according to this application, which is connected to the upper frame and the limiting post.

[0030] Figure 9 is a partial structural diagram of the grounding terminal and conductive sheet in the motor stator of an electronic oil pump according to this application.

[0031] Figure label:

[0032] 10. Stator frame; 11. Upper frame; 11A. Connecting hole; 12. Lower frame; 13. Connecting assembly; 131. Connecting bracket; 132. Limiting post mechanism; 1321. Limiting post; 1321A. Receiving cavity; 1321B. Top hole; 1322. Elastic retaining plate; 13221. Limiting part; 13222. Angled retaining part; 13223. Limiting piece; 13224. Limiting ring

[0033] 20. Stator lamination assembly; 21. Stator lamination; 21A. Connecting slot;

[0034] 30. Conductive sheet;

[0035] 40. Terminal blocks;

[0036] 50. Grounding terminal; 51. Protrusion; 52. Groove. Detailed Implementation

[0037] The specific embodiments of this application are described below with reference to the accompanying drawings and examples. Through the content described in this specification, those skilled in the art can clearly and completely understand the technical solution, the technical problem solved, and the resulting technical effects of this application. It is understood that the specific embodiments described herein are only for explaining this application and not for limiting it. Furthermore, for ease of description, only the parts related to this application are shown in the accompanying drawings.

[0038] It should be noted that the structures, proportions, sizes, etc., shown in the accompanying drawings are only for the purpose of assisting those skilled in the art in understanding and reading the contents described in the specification, and are not intended to limit the conditions under which this application can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportional relationships, or adjustments to the size should fall within the scope of the technical content disclosed in this application, provided that they do not affect the effects and purposes that this application can produce.

[0039] The use of terms such as "first," "second," and "the" does not imply quantity limitation and may indicate singular or plural. The terms "comprising," "including," "having," and any variations thereof used in this application are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or device that includes a series of steps or modules is not limited to the listed steps or units, but may also include steps or units not listed, or other steps or units inherent to such processes, methods, products, or devices. The terms "connected," "linked," and "coupled" used in this application are not limited to physical or mechanical connections, but may also include direct or indirect electrical connections.

[0040] It should also be noted that the longitudinal section corresponding to the embodiment of this application can be the section corresponding to the front view direction, the transverse section can be the section corresponding to the right view direction, and the horizontal section can be the section corresponding to the top view direction.

[0041] Furthermore, where there is no conflict, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0042] Referring to Figures 1, 2, and 3, Figure 1 is a perspective view of a motor stator for an electronic oil pump according to this application; Figure 2 is a cross-sectional view of a limiting post in the motor stator for an electronic oil pump according to this application; and Figure 3 is an enlarged view of circle A shown in Figure 2. As shown in Figures 1, 2, and 3, a motor stator for an electronic oil pump includes a stator frame 10, a stator lamination assembly 20 and conductive sheets 30 connected to the stator frame 10, and a terminal block 40 and a grounding terminal 50 connected to the stator frame 10. Here, the stator frame 10, the stator lamination assembly 20, the terminal block 40, and the grounding terminal 50 can be integrally injection molded during processing, as long as the structural connection between the grounding terminal 50 and the stator frame 10 and the grounding body is satisfied.

[0043] Referring again to Figures 1, 2, and 3, and also to Figures 4, 5, and 6, Figure 4 is a cross-sectional view of the elastic retaining plate and grounding terminal in the stator of a motor for an electronic oil pump according to this application; Figure 5 is a cross-sectional view of the elastic retaining plate, limiting piece, and limiting ring in the stator of a motor for an electronic oil pump according to this application; and Figure 6 is a perspective view of the elastic retaining plate in the stator of a motor for an electronic oil pump according to this application. As shown in Figures 1, 2, 3, 4, 5, and 6, the stator frame 10 includes an upper frame 11, a lower frame 12, and a connecting assembly 13 connecting the upper frame 11 and the lower frame 12. The upper frame 11 has an internal cavity 1321A, and its top end also has a connecting hole 11A. The connecting assembly 13 includes a connecting frame 131 and a limiting post mechanism 132 connected to the connecting frame 131. The limiting post mechanism 132 includes at least one set of limiting posts 1321, each of which also has an internal cavity 1321A. The internal cavity 1321A formed by the upper frame 11 communicates with the internal cavity 1321A formed by the limiting posts 1321. One set of limiting posts 1321 includes at least twelve limiting posts 1321, and the sidewall of one of the limiting posts 1321... The upper part is provided with a top hole 1321B. The cross-sectional shape of the limiting post 1321 is trapezoidal. The cavity 1321A of the limiting post 1321 is also provided with an elastic clamping plate 1322. The elastic clamping plate 1322 includes a limiting part 13221 and an inclined clamping part 13222. The angle between the inclined clamping part 13222 and the vertical direction is α, 30°<α<45°. The cavity 1321A of the limiting post 1321 is also provided with at least one set of limiting pieces 13223 and at least one limiting ring 13224. Through the mutual cooperation between the limiting pieces 13223 and the limiting pieces 13223, and the mutual cooperation between the limiting pieces 13223 and the limiting ring 13224, the limiting part 13221 of the elastic clamping plate 1322 is clamped, thereby realizing the limitation of the position of the elastic clamping block 1322.

[0044] Referring again to Figure 1 and Figure 7, Figure 7 is a perspective view of the stator laminations in the motor stator of an electronic oil pump according to this application. As shown in Figures 1 and 7, the stator lamination assembly 20 includes at least one set of stator laminations 21. The stator laminations 21 are provided with connecting grooves 21A, which cooperate with limiting posts 1321. Specifically, the stator laminations 21 are connected between the connecting frame 131 and the limiting post mechanism 132. The limiting post 1321 is embedded in the inside of the connecting groove 21A, realizing the connection between the stator laminations 21 and the limiting post mechanism 132. Furthermore, the connecting groove 21A is trapezoidal in shape. The stator laminations 21 are also provided with two arc-shaped grooves (not shown in the figure) and one square groove (not shown in the figure) for positioning during the processing to prevent errors in the operating position. In use, one arc-shaped groove and one square groove are used to position the stator laminations 21 during the overmolding process, and the other arc-shaped groove (not shown in the figure) is used to position the stator laminations 21 during the winding process.

[0045] Continuing to refer to FIG. 4, and also referring to FIGS. 8 and 9, FIG. 8 is a partial structural diagram of a grounding terminal connected to an upper skeleton and a limiting column in a motor stator for an electronic oil pump according to the present application, and FIG. 9 is a partial structural diagram of a grounding terminal and a conductive sheet in a motor stator for an electronic oil pump according to the present application. As shown in FIGS. 4, 8 and 9, the conductive sheet 30 is disposed inside the receiving cavity 1321A of the limiting column 1321. The grounding terminal 50 is connected to the grounding body through the conductive sheet 30, and a surface contact between the grounding terminal 50 and the conductive sheet 30 is achieved, increasing the contact area. The grounding terminal 50 is connected to the upper skeleton 11 and the connecting component 13. One end of the grounding terminal 50 penetrates through the top end of the upper skeleton 11 and extends. The other end of the grounding terminal 50 is connected to the inside of the connecting component 13. Specifically, one end of the grounding terminal 50 penetrates through the top end of the upper skeleton 11 through the connecting hole 11A. A protrusion 51 is provided at one end of the grounding terminal 50 close to the connecting component 13. The protrusion 51 abuts against and engages with the top hole 1321B to achieve the accuracy of the connection position between the grounding terminal 50 and the limiting column 1321 and prevent connection deviation. In addition, along the vertical direction, the distance between the central position of the protrusion 51 and the bottom end of the grounding terminal 50 is h, 1 cm < h < 3 cm, so as to facilitate the complete cooperation between the inclined clamping portion 13222 and the groove 52. A groove 52 is also provided on one side of the grounding terminal 50 opposite to the side where the protrusion 51 is provided. The groove 52 is engaged with the elastic clamping plate 1322. Specifically, the groove 52 is engaged with the inclined clamping portion 13222 of the elastic clamping plate 1322 to achieve a tight connection between the grounding terminal 50 and the conductive sheet 30, increasing the pressure and contact area during the connection process between the grounding terminal 50 and the conductive sheet 30, reducing the contact resistance and temperature rise, and avoiding the connection position being burned out due to excessive local temperature, resulting in the failure of the grounding terminal 50. Here, the wiring terminal 40 and the grounding terminal 50 are both fish-eye terminals. By using fish-eye terminals, the process can be simplified and the production efficiency can be improved.

[0046] Here, the stator frame 10, stator lamination assembly 20, conductive sheet 30, terminal block 40, and grounding terminal 50 are included. The stator frame 10 includes an upper frame 11, a lower frame 12, and a connecting assembly 13. The connecting assembly 13 includes a connecting frame 131 and a limiting post mechanism 132. The limiting post mechanism 132 includes at least one set of limiting posts 1321. The receiving cavity 1321A formed by the upper frame 11 is connected to the receiving cavity 1321A formed by the limiting posts 1321. The receiving cavity 1321A of the limiting posts 1321 is also provided with an elastic retaining plate 1322. The stator lamination assembly 20 includes at least one set of stator laminations 21. The conductive sheet 30 is disposed in the receiving cavity 1321A of the limiting posts 1321. Inside 21A, the grounding terminal 50 is connected to the grounding body through the conductive sheet 30. One end of the grounding terminal 50 passes through the top of the upper frame 11 and extends outwards. The other end of the grounding terminal 50 is connected to the inside of the connecting assembly 13. One end of the grounding terminal 50 is provided with a protrusion 51, and the grounding terminal 50 is also provided with a groove 52. The groove 52 engages with the elastic retaining plate 1322, which realizes the tight fit between the grounding terminal 50 and the conductive sheet 30 during the use of the stator assembly. This increases the contact area between the grounding terminal 50 and the conductive sheet 30, reduces the contact resistance and temperature rise, and prevents the grounding terminal 50 from failing. This improves the connection stability and safety between the grounding terminal 50 and the grounding body.

[0047] To facilitate understanding, the working principle of this application is further described as follows: In the production and processing of the motor stator for an electronic oil pump, the end of the grounding terminal 50 near the protrusion 51 and the groove 52 is inserted into the receiving cavity 1321A of the limiting post 1321 in the upper frame 11 and the connecting assembly 13 through the connecting hole 11A. The groove 52 on the grounding terminal 50 cooperates with the inclined locking portion 13222 on the elastic locking plate 1322 provided inside the receiving cavity 1321A of the limiting post 1321. The protrusion 51 on the grounding terminal 50 cooperates with the top hole 13 on the limiting post 1321. With the cooperation of 21B, the grounding terminal 50 is structurally connected to the upper frame 11 and the limiting post 1321, respectively, and can then be processed in subsequent processes. The stator assembly achieves surface contact between the grounding terminal 50 and the conductive sheet 30 through the cooperation of the groove 52 and the elastic plate 1322, and the cooperation of the protrusion 51 and the top hole 1321B. This increases the contact area and contact pressure, reduces the contact resistance and temperature rise, and avoids local red heat that could burn out the connection between the grounding terminal 50 and the conductive sheet 30, thus preventing the grounding terminal 50 from failing. This effectively improves the connection stability and safety of the grounding terminal 50.

[0048] Although this application has been described and illustrated with reference to specific embodiments thereof, such description and illustration are not limiting of this application. It will be readily understood by those skilled in the art that various changes can be made and equivalent elements can be substituted within embodiments without departing from the true spirit and scope of this application as defined by the appended claims. Illustrations may not be drawn to scale. Differences may exist between the technical representation in this application and actual implementation due to variables in the manufacturing process, etc. Other embodiments of this application may exist that are not specifically described. The description and illustrations should be considered illustrative rather than restrictive. Modifications can be made to adapt particular circumstances, materials, composition, methods, or processes to the objectives, spirit, and scope of this application. All such modifications fall within the scope of the appended claims. While the methods disclosed herein have been described with reference to specific operations performed in a particular order, it should be understood that these operations can be combined, subdivided, or reordered to form equivalent methods without departing from the teachings of this application. Therefore, unless specifically indicated herein, the order and grouping of operations do not limit this application.

Claims

1. A motor stator for an electronic oil pump, characterized in that, The stator includes a stator frame (10), which comprises an upper frame (11), a lower frame (12), and a connecting assembly (13) connecting the upper frame (11) and the lower frame (12). The upper frame (11) has an internal cavity (1321A). The connecting assembly (13) includes a connecting frame (131) and a limiting post mechanism (132) connected to the connecting frame (131). The limiting post mechanism (132) includes at least one set of limiting posts (13). 21), the limiting post (1321) also has the receiving cavity (1321A) inside, the receiving cavity (1321A) formed by the upper frame (11) is connected to the receiving cavity (1321A) formed by the limiting post (1321), and the receiving cavity (1321A) of the limiting post (1321) is also provided with an elastic retaining plate (1322); the stator lamination assembly (20) and the conductive sheet (3) connected to the stator frame (10) 0), the stator lamination assembly (20) includes at least one set of stator laminations (21), the conductive sheet (30) is disposed inside the receiving cavity (1321A) of the limiting post (1321); the wiring terminal (40) and the grounding terminal (50) are connected to the stator frame (10), the grounding terminal (50) is connected to the grounding body through the conductive sheet (30), wherein the grounding terminal (50) is connected to the upper frame (11) and the connecting assembly (13). One end of the grounding terminal (50) passes through the top of the upper frame (11) and extends therein. The other end of the grounding terminal (50) is connected to the interior of the connecting component (13). The grounding terminal (50) has a protrusion (51) near the end connected to the connecting component (13). The grounding terminal (50) also has a groove (52) on the side opposite to the protrusion (51). The groove (52) engages with the elastic plate (1322).

2. The motor stator for an electronic oil pump according to claim 1, characterized in that, The top of the upper frame (11) is also provided with a connecting hole (11A), and a top hole (1321B) is provided on the side wall of one of the limiting posts (1321). The grounding terminal (50) passes through the connecting hole (11A) and extends through the top of the upper frame (11). The protrusion and the top hole (1321B) abut against each other and fasten together.

3. The motor stator for an electronic oil pump according to claim 2, characterized in that, The cross-sectional shape of the limiting post (1321) is trapezoidal.

4. The motor stator for an electronic oil pump according to claim 1, characterized in that, The elastic clamping plate (1322) includes a limiting part (13221) and an inclined clamping part (13222). The cavity (1321A) of the limiting post (1321) is further provided with at least one set of limiting pieces (13223) and at least one limiting ring (13224). The limiting part (13221) of the elastic clamping plate (1322) is clamped by the mutual cooperation between the limiting pieces (13223) and the limiting ring (13224).

5. The motor stator for an electronic oil pump according to claim 4, characterized in that, The angle between the inclined card part (13222) and the vertical direction is α, where 30° < α < 45°.

6. The motor stator for an electronic oil pump according to claim 5, characterized in that, The distance between the center of the protrusion (51) and the bottom of the grounding terminal (50) is h, 1 cm. <h<3cm。 7. The motor stator for an electronic oil pump according to claim 6, characterized in that, A set of the limiting posts (1321) includes at least twelve of the limiting posts (1321).

8. The motor stator for an electronic oil pump according to claim 1, characterized in that, The stator laminations are connected between the connecting frame (131) and the limiting column mechanism (132).

9. The motor stator for an electronic oil pump according to claim 8, characterized in that, The stator lamination (21) is provided with a connecting groove (21A), which cooperates with the limiting post (1321).

10. The motor stator for an electronic oil pump according to claim 9, characterized in that, The connecting groove (21A) is trapezoidal in shape.

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