Stator detection tooling

Abstract

This disclosure relates to a stator inspection fixture. The stator includes a body and three-phase copper busbars. The inspection fixture includes: a base for positioning the body; and a copper busbar position detection mechanism slidably disposed on the base along the stator axial direction. The copper busbar position detection mechanism includes three spaced-apart receiving slots, one end of which along the stator axial direction is configured as an opening to allow the three-phase copper busbars to be placed into the receiving slots through the opening. The stator inspection fixture can perform 100% stator inspection on-line, preventing defective products from spilling out. The sliding arrangement of the copper busbar position detection mechanism on the base solves the interference problem during stator handling, significantly reducing the operator's workload and thus better adapting to high-frequency stator handling scenarios on production lines. The receiving slots in the copper busbar position detection mechanism can quickly detect and confirm the position of the three-phase copper busbars.

Description

Technical Field

[0001] This disclosure relates to the field of stator testing technology, and in particular to a stator testing fixture. Background Technology

[0002] The stator motor design incorporates three-phase copper busbars, which need to be assembled with three-phase connectors. To ensure successful assembly, the dimensions of the three-phase copper busbars must be strictly controlled. In related technologies, a coordinate measuring machine (CMM) is used to inspect the three-phase copper busbars; however, this method is time-consuming and cannot guarantee 100% inspection accuracy on the production line. Utility Model Content

[0003] To overcome the problems existing in related technologies, this disclosure provides a stator testing fixture.

[0004] According to a first aspect of the present disclosure, a stator testing fixture is provided. The stator includes a body and three-phase copper busbars. The testing fixture includes: a base for positioning the body; and a copper busbar position detection mechanism slidably disposed on the base along the axial direction of the stator. The copper busbar position detection mechanism includes three spaced-apart receiving slots, one end of each receiving slot along the axial direction of the stator being configured as an opening for the three-phase copper busbars to be placed into the receiving slots through the opening.

[0005] The stator inspection fixture allows for 100% stator inspection on-line, preventing defective products from spilling out. The copper busbar position detection mechanism, slidingly mounted on the base, solves interference issues during stator handling, significantly reducing operator workload and better adapting to high-frequency stator handling scenarios on production lines. The receiving slot within the copper busbar position detection mechanism allows for rapid detection and confirmation of the three-phase copper busbar position.

[0006] In some possible implementations, the testing fixture includes a copper busbar guide, which is disposed on the side of the receiving groove where the opening is formed. The copper busbar guide has three spaced-apart guide holes, and the outer contour of the guide holes is larger than the outer contour of the receiving groove in the axial projection of the stator.

[0007] This design can expand the lead-in range of the copper busbar. Even if there is a slight wobbling due to a small positional deviation of the three-phase copper busbar, it can be guided by the guide hole wall to gradually correct its position and smoothly slide into the receiving groove, improving the convenience of the inspection operation.

[0008] In some possible implementations, the bottom of the receiving groove is provided with an insertion hole for matching the opening on the three-phase copper busbar, and the testing fixture includes a testing pin for inserting the opening and the insertion hole after the three-phase copper busbar is placed into the receiving groove.

[0009] If the test pin can be inserted smoothly, it means that the positions of the three-phase copper busbar meet the requirements. If it cannot be inserted, it indicates that there is a deviation in the copper busbar.

[0010] In some possible implementations, the copper busbar position detection mechanism includes a first detection element and a second detection element. The first detection element is slidably disposed on the base along the stator axis, and the receiving groove is formed in the first detection element. The second detection element is slidably disposed on the first detection element along the stator axis, and the second detection element can slide to cover the opening of the receiving groove.

[0011] In this embodiment of the disclosure, the thickness of the three-phase copper busbar can be detected by whether the second detection element can successfully cover the receiving groove.

[0012] In some possible implementations, the second detection element has a pre-positioning hole, the bottom of the receiving groove has an insertion hole, the three-phase copper busbar has an opening, and the detection fixture includes a detection pin for sequentially inserting the pre-positioning hole, the opening, and the insertion hole after the three-phase copper busbar is placed into the receiving groove.

[0013] If the test pin can be inserted smoothly, it means that the positions of the three-phase copper busbar meet the requirements. If it cannot be inserted, it indicates that there is a deviation in the copper busbar.

[0014] In some possible implementations, the stator includes a neutral point connector, and the detection fixture includes a neutral point detection mechanism, which is mounted on the copper busbar position detection mechanism for detecting the position of the neutral point connector.

[0015] The copper busbar position detection mechanism can simultaneously detect the position of the stator neutral point connecting piece while detecting the position of the three-phase copper busbar, enabling multiple dimensions of the stator to be detected at the same time, thus improving detection efficiency.

[0016] In some possible implementations, the neutral point detection mechanism includes a positioning element for positioning the neutral point connecting piece. The positioning element has a detection hole, and the neutral point connecting piece has a connecting hole. The neutral point detection mechanism includes a detection pin for sequentially inserting into the detection hole and the connecting hole.

[0017] If the test pin can be inserted, it proves that the position of the neutral point connector meets the requirements; if it cannot be inserted, it indicates that there is a deviation in the position of the connector.

[0018] In some possible implementations, the positioning element is mounted to the copper busbar position detection mechanism via a connecting arm, and the detection pin is detachably mounted on the connecting arm.

[0019] The detection pin can be detachably installed on the connecting arm. During testing, the detection pin can be removed from the connecting arm and inserted into the mounting hole when not in use, making it easy to retrieve for the next use.

[0020] In some possible implementations, the base has a positioning groove recessed along the stator axis for positioning the machine body to limit the radial and axial movement of the machine body on one side.

[0021] After the machine body is placed in the positioning groove, the groove wall can limit the radial direction of the machine body, and the bottom of the groove on the axial side can limit the axial direction of the machine body, preventing the machine body from shifting downward in the radial or axial direction during the testing process.

[0022] In some possible implementations, the base is provided with a positioning protrusion extending radially into the positioning groove along the stator, for extending into a positioning recess formed on the body to limit the circumferential movement of the body.

[0023] The positioning protrusion and positioning recess are matched and engaged to limit the circumferential movement of the machine body, ensuring that the machine body is always in the preset angle position during testing, and avoiding inaccurate testing of subsequent copper busbars and neutral point connecting pieces due to circumferential deviation.

[0024] The technical solutions provided by the embodiments of this disclosure can include the following beneficial effects: the stator inspection fixture can perform 100% inspection of the stator on-line, avoiding the spillover of defective products. The copper busbar position detection mechanism, which is slidably mounted on the base, can solve the interference problem during stator handling, significantly reducing the operator's workload and thus better adapting to the high-frequency stator handling scenarios on the production line. The receiving groove set in the copper busbar position detection mechanism can quickly detect and confirm the position of the three-phase copper busbars.

[0025] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0026] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure.

[0027] Figure 1 This is a schematic diagram of a stator inspection fixture according to an exemplary embodiment.

[0028] Figure 2 This is a schematic diagram illustrating a stator inspection fixture in an uninspected state according to an exemplary embodiment.

[0029] Figure 3 This is a schematic diagram illustrating a stator inspection fixture in an inspection state according to an exemplary embodiment.

[0030] Figure 4 This is a schematic diagram illustrating a copper busbar position detection mechanism in a detection state according to an exemplary embodiment.

[0031] Figure 5 This is a schematic diagram of a neutral point detection mechanism according to an exemplary embodiment.

[0032] Explanation of reference numerals in the attached figures 10-Base, 101-Connecting seat, 11-Positioning groove, 12-Positioning protrusion, 20-Copper busbar position detection mechanism, 201-First detection component, 202-Second detection component, 2021-Pre-positioning hole, 21-Receiving groove, 211-Insertion hole, 30-Copper busbar guide, 31-Guide hole, 40-Neutral point detection mechanism, 41-Positioning component, 411-Detection hole, 412-Detection pin, 42-Connecting arm. Detailed Implementation

[0033] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this disclosure. Rather, they are merely examples of apparatuses consistent with some aspects of this disclosure as detailed in the appended claims.

[0034] The stator motor design incorporates three-phase copper busbars, which need to be assembled with three-phase connectors. To ensure successful assembly, the dimensions of the three-phase copper busbars must be strictly controlled. In related technologies, a coordinate measuring machine (CMM) is used to inspect the three-phase copper busbars; however, this method is time-consuming and cannot guarantee 100% inspection accuracy on the production line.

[0035] Reference Figure 1As shown, this embodiment of the present disclosure provides a stator testing fixture. The stator (not shown) includes a body and three-phase copper busbars. The testing fixture includes a base 10 and a copper busbar position detection mechanism 20. The base 10 is used to position the body so that the body can be stably placed on the testing fixture at a preset position, for example, so that the body can be stably placed on the base 10 at least under the action of gravity. The copper busbar position detection mechanism 20 is slidably disposed on the base 10 along the stator axial direction. Before the stator is tested, the copper busbar position detection mechanism 20 can be slid away from the base 10 to reserve sufficient operating space for the stator to be placed on the base 10 and to avoid interference between the copper busbar position detection mechanism 20 and the stator. During the test, the copper busbar position detection mechanism 20 can be slid closer to the stator so that the three-phase copper busbars naturally enter the testing area. The copper busbar position detection mechanism 20 includes three spaced-apart receiving slots 21. One end of the receiving slot 21 along the stator axial direction is constructed as an opening so that the three-phase copper busbars can be placed into the receiving slot 21 through the opening. After the stator is placed on the base 10, the sliding copper busbar position detection mechanism 20 is used to determine whether the three-phase copper busbars can smoothly enter the copper busbar position detection mechanism 20, so as to determine whether the positional relationship between the three-phase copper busbars is correct, and whether the outline of the three-phase copper busbars meets the requirements by ensuring that the three-phase copper busbars can be smoothly placed into the receiving groove 21.

[0036] Through the above technical solutions, the stator inspection fixture can perform 100% stator inspection on-line, preventing defective products from spilling out. The copper busbar position detection mechanism 20, which is slidably mounted on the base 10, can solve the interference problem during stator handling, significantly reducing the operator's workload and thus better adapting to the high-frequency stator handling scenarios on the production line. The receiving groove 21 set in the copper busbar position detection mechanism 20 can quickly detect and confirm the position of the three-phase copper busbars.

[0037] The stator includes a housing, three-phase copper busbars, and a neutral point connecting piece. In this embodiment, the stator testing fixture can detect the positional accuracy of the three-phase copper busbars and the neutral point connecting piece. (Refer to...) Figure 1 The stator testing fixture in this embodiment includes a base 10, a copper busbar position detection mechanism 20, a copper busbar guide 30, and a neutral point detection mechanism 40. These components cooperate through a preset sliding or fixed connection method to achieve rapid positioning and testing of the stator. The following describes the process in conjunction with... Figures 1 to 5 The specific structure and function of each part are described in detail.

[0038] The base 10 is the support and positioning base for the entire testing fixture. Its structure directly ensures the initial positioning accuracy of the machine body and provides a positioning basis for the subsequent testing of the three-phase copper busbar and neutral point connection piece.

[0039] Reference Figure 1The base 10 can have a positioning groove 11 recessed along the stator axis for positioning the machine body. When the machine body is placed in the positioning groove 11, the groove wall can limit the radial movement of the machine body, and the bottom of the groove on the axial side can limit the axial movement of the machine body on the axial side to prevent the machine body from shifting radially or axially downward (in the direction of gravity) during the detection process.

[0040] The base 10 may be provided with a positioning protrusion 12 extending radially into the positioning groove 11 of the stator. The stator body has a pre-set positioning recess, into which the positioning protrusion 12 can extend and engage, thereby limiting the circumferential movement of the body and ensuring that the body is always in a preset angle position during testing. This prevents inaccurate testing of subsequent copper busbars and neutral point connectors due to circumferential misalignment. The positioning protrusion 12 can be a single component, and the base 10 may have a groove-like structure for mounting the positioning protrusion 12. The positioning protrusion 12 can be detachably installed in this groove-like structure for adjustment and replacement according to the compatible stator.

[0041] The copper busbar position detection mechanism 20 is slidably mounted on the base 10 along the stator axis to accurately detect whether the position of the three-phase copper busbar meets the assembly requirements. For example, a connecting seat 101 extending along the stator axis can be formed on the base 10, and a slide rail or slide rod can be installed on the connecting seat 101. The copper busbar position detection mechanism 20 can be sleeved on the slide rail or slide rod.

[0042] Reference Figure 2 and Figure 3 The copper busbar position detection mechanism 20 may include a first detection element 201 and a second detection element 202. The first detection element 201 is slidably disposed on the base 10 along the stator axis, and has three spaced receiving grooves 21 formed on the side facing the three-phase copper busbar. The shape of the receiving grooves 21 is adapted to the cross-sectional shape of the three-phase copper busbar, and one end along the stator axis is constructed as an opening, which is used to allow the three-phase copper busbar to be placed into the receiving grooves 21 along the axial direction to realize the preliminary position detection of the copper busbar.

[0043] The second detection element 202 is slidably disposed on the first detection element 201 along the stator axial direction. When the three-phase copper busbars are inserted into the receiving groove 21, the second detection element 202 can slide to cover the opening of the receiving groove 21, that is, close the opening of the receiving groove 21 on the side facing the three-phase copper busbars. Figure 2 As shown, this is the state when the second detection element 202 does not cover the receiving groove 21, as follows. Figure 3 As shown, this is the state when the second detection element 202 covers the receiving groove 21, as follows. Figure 4 The image shown is a cross-sectional view of the second detection element 202 covering the receiving groove 21. In this embodiment, the thickness of the three-phase copper busbar can be detected by whether the second detection element 202 can smoothly cover the receiving groove 21, that is, along... Figure 4The dimensions of the extension direction of the socket 211 are shown in the figure.

[0044] The three-phase copper busbar has openings, see reference. Figures 2 to 4 The bottom of the receiving groove 21 may be provided with a socket 211 for matching with the openings on the three-phase copper busbar. The testing fixture includes a testing pin for inserting into the opening and socket 211 after the three-phase copper busbar is placed into the receiving groove 21. If the testing pin can be inserted smoothly, it indicates that the positions of the three-phase copper busbar meet the requirements. If it cannot be inserted, it indicates that there is a deviation in the copper busbar.

[0045] The second testing piece 202 may have a pre-positioning hole 2021. The testing fixture includes a testing pin for sequentially inserting the pre-positioning hole 2021, the opening, and the insertion hole 211 after the three-phase copper busbar is inserted into the receiving groove 21. If the testing pin can be inserted smoothly, it indicates that the positions of the three-phase copper busbar meet the requirements. If it cannot be inserted, it indicates that there is a deviation in the copper busbar.

[0046] The copper busbar guide 30 guides the three-phase copper busbars smoothly into the receiving groove 21, preventing them from failing to enter the groove due to initial positional deviation. The copper busbar guide 30 is located on the side of the receiving groove 21 with an opening, connected to the first detection element 201, and positioned along the path of the three-phase copper busbars into the receiving groove 21. The copper busbar guide 30 has three spaced-apart guide holes 31, each corresponding to one of the three receiving grooves 21. In the axial projection of the stator, the outer contour of the guide holes 31 is larger than the outer contour of the receiving grooves 21. This design expands the lead-in range of the copper busbars. Even slight wobbling due to minor positional deviations in the three-phase copper busbars can be guided by the holes of the guide holes 31, gradually correcting their position and allowing them to slide smoothly into the receiving grooves 21, thus improving the convenience of the detection operation.

[0047] Reference Figure 5 The neutral point detection mechanism 40 is installed on the copper busbar position detection mechanism 20. It is used to detect the position of the stator neutral point connecting piece while the copper busbar position detection mechanism 20 detects the position of the three-phase copper busbar, so that multiple dimensions of the stator can be detected simultaneously, thus improving detection efficiency.

[0048] In this embodiment, the neutral point detection mechanism 40 may include a positioning member 41 for positioning the neutral point connecting piece. The shape of the positioning member 41 can be adapted to the shape of the neutral point connecting piece. For example, the positioning member 41 is composed of two clamping pieces with clamping grooves, and the neutral point connecting piece is positioned in the clamping grooves. The positioning member 41 has a detection hole 411, and the neutral point connecting piece has a connection hole. The neutral point detection mechanism 40 includes a detection pin 412 for sequentially inserting into the detection hole 411 and the connection hole. If the detection pin 412 can be inserted, it proves that the position of the neutral point connecting piece meets the requirements; if it cannot be inserted, it indicates that there is a deviation in the position of the connecting piece.

[0049] The positioning element 41 can be mounted on the copper busbar position detection mechanism 20 via the connecting arm 42, so as to slide along the stator axis together with the copper busbar position detection mechanism 20. The detection pin 412 can be detachably mounted on the connecting arm 42. For example, the connecting arm 42 is formed with a mounting hole for fitting the detection pin 412. During detection, the detection pin 412 can be removed from the connecting arm 42 and inserted into the mounting hole when not in use, making it easy to remove for the next use. Multiple mounting holes can be provided for inserting various types of detection pins 412.

[0050] The usage process of the testing fixture in this embodiment is as follows: First, place the stator to be tested in the positioning groove 11 of the base 10, so that the axial side of the machine body is in contact with the bottom of the positioning groove 11 to achieve axial limiting, and the outer periphery of the machine body is in contact with the groove wall of the positioning groove 11 to achieve radial limiting. At the same time, ensure that the positioning protrusion 12 of the base 10 is engaged in the positioning recess of the machine body to achieve circumferential limiting, and complete the fixed positioning of the machine body; Second, slide the copper busbar position detection mechanism 20 along the stator axis towards the stator, so that the three-phase copper busbar is aligned with the guide hole 31 of the copper busbar guide 30. Continue to slide the copper busbar position detection mechanism 20, and the three-phase copper busbar enters the receiving groove 21 of the first detection piece 201 along the axial direction under the guidance of the guide hole 31; Third, slide the second detection piece 202 along the stator axis until it covers the groove opening of the receiving groove 21, take out the detection pin, and try to insert the first detection pin into the receiving groove 21. The second test piece 202 has a pre-positioning hole 2021, an opening in the three-phase copper busbar, and an insertion hole 211 in the receiving groove 21. If the test pin can be inserted smoothly, it indicates that the position of the three-phase copper busbar is qualified; otherwise, it is unqualified. In the fourth step, while the three-phase copper busbar enters the receiving groove 21, the neutral point connecting piece enters the positioning area of ​​the positioning piece 41. While testing the three-phase copper busbar, the test pin 412 of the neutral point testing mechanism 40 is taken and tried to be inserted into the test hole 411 of the positioning piece 41 and the connecting hole of the neutral point connecting piece. If the test pin 412 can be inserted smoothly, it indicates that the position of the neutral point connecting piece is qualified; otherwise, it is unqualified. In the fifth step, after the test is completed, the test pin and the test pin 412 are pulled out, the second test piece 202 is slid in the opposite direction until it is disengaged from the receiving groove 21, and then the copper busbar position testing mechanism 20 is slid in the opposite direction until it is far away from the stator. Finally, the stator is taken out from the positioning groove 11 of the base 10 to complete the stator test.

[0051] The stator inspection fixture of this disclosure, through the coordinated operation of various mechanisms, can achieve rapid positioning and inspection of the stator body, three-phase copper busbars, and neutral point connecting pieces. Compared with the time-consuming "three-coordinate inspection" in related technologies, the inspection process of this fixture does not require complicated operations, and the inspection time of a single stator can be greatly shortened, which can meet the production line's requirement for "100% inspection" of the stator. At the same time, each inspection link is achieved through the cooperation of pin holes, and the inspection accuracy is stable, which can effectively ensure the assembly success rate of the three-phase copper busbars and subsequent three-phase connecting parts.

[0052] In the above detailed description, reference has been made to the accompanying drawings, which illustrate specific aspects of this disclosure by way of illustration. In this regard, terms indicating direction or positional relationship, such as “center,” “longitudinal,” “lateral,” “length,” “width,” “thickness,” “upper,” “lower,” “front,” “rear,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” “outer,” “clockwise,” “counterclockwise,” “axial,” “radial,” and “circumferential,” are used with reference to the orientation of the described figures. Since components of the described device can be positioned in multiple different orientations, directional terms are used for illustrative purposes and not for limitation. It should be understood that other aspects can be utilized and structural or logical changes can be made without departing from the concept of this disclosure. Therefore, the following detailed description should not be considered limiting.

[0053] It should be understood that, unless otherwise specifically indicated, features of various embodiments of this disclosure described herein can be combined with each other. As used herein, the term “and / or” includes any one of the relevant listed items and any combination of any two or more; similarly, “at least one of…” includes any one of the relevant listed items and any combination of any two or more.

[0054] It should be understood that, unless otherwise expressly specified and limited, the terms "joining," "attaching," "installing," "connecting," "linking," "fixing," etc., used in the embodiments of this disclosure should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms herein based on the specific circumstances.

[0055] Furthermore, the term "above" as used herein with respect to components, elements, or material layers formed or located "above" a surface may be used to indicate that the component, element, or material layer is "indirectly" positioned (e.g., placed, formed, deposited, etc.) on the surface such that one or more additional components, elements, or layers are arranged between the surface and the component, element, or material layer. However, the term "above" as used with respect to components, elements, or material layers formed or located "above" a surface may also optionally have a specific meaning: that the component, element, or material layer is "directly" positioned (e.g., placed, formed, deposited, etc.) on the surface, for example, in direct contact with the surface.

[0056] Although terms such as “first,” “second,” and “third” may be used herein to describe various components, parts, regions, layers, or sections, these components, parts, regions, layers, or sections are not limited to these terms. Rather, these terms are used only to distinguish one component, part, region, layer, or section from another. Therefore, without departing from the teachings of the examples described herein, the first component, part, region, layer, or section mentioned in the examples may also be referred to as the second component, part, region, layer, or section. Furthermore, the terms “first” and “second” are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as “first” or “second” may explicitly or implicitly include at least one of that feature. In the description herein, “a plurality” means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0057] It should be understood that spatial relative terms, such as “above,” “upper,” “below,” and “lower,” are used herein to describe the relationship between one element and another shown in the figures. In addition to the orientation depicted in the figures, these spatial relative terms are also intended to encompass different orientations of the device in use or operation. For example, if the device in the figures is flipped, an element described as “above” or “upper” relative to another element would be “below” or “lower” relative to that other element. Thus, depending on the spatial orientation of the device, the term “above” encompasses both above and below orientations. Devices may have other orientations (e.g., rotated 90 degrees or in other orientations), and the spatial relative terms used herein should be interpreted accordingly.

[0058] Furthermore, the term “exemplary” is used herein to mean serving as an example, instance, or illustration. Any aspect or design described herein as “exemplary” is not necessarily to be construed as advantageous compared to other aspects or designs. Rather, the use of the term “exemplary” is intended to present the concept in a concrete manner. As used herein, the term “or” is intended to mean an inclusive “or” rather than an exclusive “or.” That is, unless otherwise specified or clear from the context, “X applies A or B” is intended to mean any of the natural inclusive arrangements. That is, “X applies A or B” satisfies any of the foregoing instances if X applies A; X applies B; or both X applies A and B. Additionally, unless otherwise specified or clear from the context to refer to the singular form, the articles “a” and “an” as used in this application and the appended claims are generally understood to mean “one or more.”

[0059] Similarly, although this disclosure has been shown and described with respect to one or more implementations, equivalent variations and modifications will occur to those skilled in the art upon reading and understanding this specification and the accompanying drawings. This disclosure includes all such modifications and variations and is limited only by the scope of the claims. In particular, with respect to the various functions performed by the components described above (e.g., elements, resources, etc.), unless otherwise indicated, the terminology used to describe such components is intended to correspond to any component (functionally equivalent) that performs the specific function of the described component, even if structurally not equivalent to the disclosed structure. Furthermore, although specific features of this disclosure may have been disclosed with respect to only one of several implementations, such features may be combined with one or more other features of other implementations, as may be desired and advantageous to any given or particular application. Moreover, with regard to the terms “comprising,” “owning,” “having,” “having,” or variations thereof as used in the detailed description or claims, such terms are intended to be inclusive in a manner similar to the term “including.”

[0060] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the appended claims.

[0061] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

Claims

1. A stator testing fixture, characterized in that, The stator includes a housing and a three-phase copper busbar, and the testing fixture includes: A base for positioning the machine body; and A copper busbar position detection mechanism is slidably disposed on the base along the stator axis. The copper busbar position detection mechanism includes three spaced-apart receiving slots. One end of each receiving slot along the stator axis is configured as an opening so that the three-phase copper busbar can be placed into the receiving slot through the opening.

2. The stator testing fixture according to claim 1, characterized in that, The testing fixture includes a copper busbar guide, which is disposed on the side of the receiving groove where the opening is formed. The copper busbar guide has three spaced-apart guide holes, and the outer contour of the guide holes is larger than the outer contour of the receiving groove in the axial projection of the stator.

3. The stator testing fixture according to claim 1, characterized in that, The bottom of the receiving groove is provided with an insertion hole for matching the opening on the three-phase copper busbar. The testing fixture includes a testing pin for inserting the opening and the insertion hole after the three-phase copper busbar is placed into the receiving groove.

4. The stator testing fixture according to claim 1, characterized in that, The copper busbar position detection mechanism includes a first detection element and a second detection element. The first detection element is slidably disposed on the base along the stator axis, and the receiving groove is formed in the first detection element. The second detection element is slidably disposed on the first detection element along the stator axis, and the second detection element can slide to cover the opening of the receiving groove.

5. The stator testing fixture according to claim 4, characterized in that, The second testing piece has a pre-positioning hole, the bottom of the receiving groove has an insertion hole, the three-phase copper busbar has an opening, and the testing fixture includes a testing pin for sequentially inserting the pre-positioning hole, the opening, and the insertion hole after the three-phase copper busbar is placed into the receiving groove.

6. The stator testing fixture according to claim 1, characterized in that, The stator includes a neutral point connecting piece, and the testing fixture includes a neutral point testing mechanism. The neutral point testing mechanism is installed on the copper busbar position testing mechanism and is used to detect the position of the neutral point connecting piece.

7. The stator testing fixture according to claim 6, characterized in that, The neutral point detection mechanism includes a positioning component for positioning the neutral point connecting piece. The positioning component has a detection hole, and the neutral point connecting piece has a connecting hole. The neutral point detection mechanism includes a detection pin for sequentially inserting into the detection hole and the connecting hole.

8. The stator testing fixture according to claim 7, characterized in that, The positioning component is mounted on the copper busbar position detection mechanism via a connecting arm, and the detection pin is detachably mounted on the connecting arm.

9. The stator testing fixture according to claim 1, characterized in that, The base has a positioning groove recessed along the axial direction of the stator for positioning the machine body and limiting the radial direction and axial direction of the machine body on one side.

10. The stator testing fixture according to claim 9, characterized in that, The base is provided with a positioning protrusion that extends radially into the positioning groove along the stator, and is used to extend into the positioning recess formed on the body to limit the circumferential movement of the body.

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