Flat wire stator positioning tool

Abstract

The utility model provides a flat wire stator positioning tool, the flat wire stator comprises a busbar, the outer side wall of the flat wire stator is provided with a vertically arranged positioning groove, the flat wire stator positioning tool comprises a positioning clamp used for clamping one end of an iron core of the flat wire stator, the positioning clamp comprises a first hoop sleeve, a second hoop sleeve and a convex block, the first end of the first hoop sleeve is hinged with the first end of the second hoop sleeve, and the convex block is connected with the first hoop sleeve. Hasps are installed at the second ends of the first hoop sleeve and the second hoop sleeve, the protruding blocks are used for being inserted and positioned with the positioning grooves, and the first hoop sleeve and the second hoop sleeve are used for abutting against the end face and the side wall of an iron core of the flat wire stator; and the positioning seat is mounted on the positioning clamp and is used for abutting against and positioning the busbar. According to the utility model, the positioning clamp is provided with the convex block, the convex block can be inserted into the positioning groove, the positioning clamp is sleeved into the flat wire stator at a specific angle, and the end parts of the first hoop sleeve and the second hoop sleeve are provided with the hasps, so that compared with bolt connection in the prior art, the tool is simpler and more convenient to operate, shorter in time consumption, slowed down in abrasion and prolonged in service life.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, in particular to a flat wire stator positioning tool. Background Art

[0002] The difference between flat wire motors and round wire motors lies in the way the copper wire is formed. Flat wire is conducive to improving the motor slot fill rate. Increasing the slot fill rate means that more copper wire can be filled in without changing the space, generating a stronger magnetic field strength and improving the power density.

[0003] In order to facilitate the connection of the flat wire motor with an external power supply, one way is to set a bus at the end of the stator core. The lead wire at the end of one side of the winding of the flat wire stator is welded to the lead wire of the bus. In order to install the bus to the end of the stator core, a positioning fixture is required. The function of the positioning fixture is to ensure the accuracy of the relative position of the bus and the stator core, so that the height of the welding point between the lead end at one end of the winding and the connection end of the bus meets the standard. The existing positioning fixture includes a clamp, which is sleeved on the end face of the stator core and the adjacent outer wall. The clamp has two hoop sleeves, one end of which is hinged and the other end is connected by bolts.

[0004] In the process of realizing the utility model, the inventors found that there are at least the following problems in the prior art: one end of the two hoops of the existing positioning tool is fixed by bolts, and a screwdriver is needed to tighten or loosen the bolts, which takes a long time to disassemble and assemble, and the efficiency is low, and the bolts will wear out after long use. Utility Model Content

[0005] The utility model aims to solve one of the technical problems in the related art at least to a certain extent.

[0006] Therefore, the purpose of the utility model is to provide a flat wire stator positioning tool to improve the working efficiency and extend the service life of the tool.

[0007] In order to achieve the above-mentioned object, the utility model proposes a flat wire stator positioning tool, the flat wire stator includes a bus bar, and the outer side wall of the flat wire stator has a vertically arranged positioning groove, including:

[0008] A positioning clamp, used for clamping one end of the iron core of the flat wire stator, the positioning clamp comprises a first hoop, a second hoop and a projection, the first ends of the first hoop and the second hoop are hinged, the second ends of the first hoop and the second hoop are equipped with buckles, the projection is used for inserting and positioning with the positioning groove, and the first hoop and the second hoop are used for abutting the end surface and side wall of the iron core of the flat wire stator;

[0009] A positioning seat is installed on the positioning clamp and is used for abutting against the busbar for positioning.

[0010] According to the flat wire stator positioning tool of the utility model, a protrusion is provided on the positioning clamp, and the protrusion can be inserted into the positioning groove, so that the positioning clamp is inserted into the flat wire stator at a specific angle, and buckles are provided at the ends of the first hoop and the second hoop. Compared with the bolt connection in the prior art, the operation of the tool is simpler, less time-consuming, wear is reduced, and the service life is extended.

[0011] According to one embodiment of the utility model, the buckle includes a hook, a buckle body, a pressure plate and a loop, the hook is installed on the first hoop, the buckle body is installed on the second hoop, one end of the pressure plate is hinged to the buckle body, and the middle part of the pressure plate is hinged to one end of the loop.

[0012] According to an embodiment of the utility model, the inner side of the bottom of the first hoop has a first step base, and the inner side of the inner bottom of the second hoop has a second step base.

[0013] According to an embodiment of the utility model, an avoidance groove is provided on the inner wall of the second hoop, and the protrusion is arranged in the avoidance groove.

[0014] According to an embodiment of the utility model, the positioning seat is installed above the avoidance groove, and the inner side of the positioning seat has a plurality of vertically arranged contour steps, and the contour steps are provided with mounting holes arranged in the horizontal direction.

[0015] According to an embodiment of the utility model, a third step seat in the horizontal direction is provided on the contoured step, and the distance from the horizontal plane of the third step seat to the top surface of the second hoop is configured as the standard height of the phase lead terminal of the busbar.

[0016] According to an embodiment of the utility model, a welding point height gauge is further included, wherein the welding point height gauge is provided with a plurality of inspection holes, and the welding point height gauge is in contact with the top surface of the positioning seat.

[0017] According to one embodiment of the utility model, the welding point height gauge includes a positioning plate, a top plate and a support column. The overall appearance of the positioning plate and the top plate are arc plates. The top plate is located above the positioning plate. The positioning plate and the top plate are connected by the support column, and the inspection hole is located on the positioning plate.

[0018] According to an embodiment of the utility model, the inner side of the top plate is connected to the outer side of the positioning plate through the support column, and the bottom of the top plate is provided with a contoured base adapted to the contoured step.

[0019] According to an embodiment of the utility model, an escape groove is provided on the outer edge of the positioning plate.

[0020] Additional aspects and advantages of the present invention will be given in part in the following description and in part will become apparent from the following description or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Various other advantages and benefits will become apparent to those skilled in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only used for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present invention. In addition, the same reference symbols are used throughout the accompanying drawings to represent the same components. Among them:

[0022] Figure 1 It is a structural schematic diagram of a flat wire stator positioning tooling proposed in one embodiment of the utility model.

[0023] Figure 2 The utility model is a schematic structural diagram of the bottom of a flat wire stator positioning tool according to an embodiment of the present invention.

[0024] Figure 3 The utility model is a schematic structural diagram of a welding point height inspection tool for a flat wire stator positioning tool according to an embodiment of the present invention.

[0025] Figure 4 The utility model is a schematic diagram of an embodiment of a flat wire stator positioning tool and a bus bar installed on a stator.

[0026] Figure 5 yes Figure 4 Schematic diagram from another angle.

[0027] Description of reference numerals:

[0028] 1-positioning clamp, 2-positioning seat, 3-welding point height gauge, 4-winding, 5-bus, 41-winding lead wire, 51-lead wire, 101-first hoop, 102-second hoop, 103-hinge pin, 104-bump, 105-hook, 106-buckle body, 107-pressing sheet, 108-avoidance groove, 109-ring, 1011-first step base, 1012-second step base, 201-contact step, 202-mounting hole, 203-third step seat, 204-base, 301-positioning plate, 302-inspection hole, 303-top plate, 304-contact base, 305-support column, 306-avoidance groove. DETAILED DESCRIPTION

[0029] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention. On the contrary, the embodiments of the present invention include all changes, modifications and equivalents that fall within the spirit and connotation of the appended claims.

[0030] Figure 1 This is a schematic diagram of the structure of the flat wire stator positioning tooling proposed in one embodiment of the utility model. Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, the embodiment of the utility model proposes a flat wire stator positioning tool, and the flat wire stator includes a busbar 5. The busbar 5 is a metal conductive device used to connect the motor, usually made of copper or aluminum, which can effectively transmit current and connect various components inside the motor to enable the motor to operate normally. The busbar 5 has a plurality of lead wires 51 and a three-phase terminal, and one end of the lead wire 51 is connected to the three-phase terminal. The outer side wall of the flat wire stator has a vertically arranged positioning groove. The positioning groove extends from one end face of the flat wire stator core to the other end face.

[0031] The flat wire stator positioning tool of this embodiment includes a positioning clamp 1 and a positioning seat 2. The positioning clamp 1 is used to clamp one end of the iron core of the flat wire stator. The positioning clamp 1 includes a first hoop 101, a second hoop 102 and a protrusion 104. The first ends of the first hoop 101 and the second hoop 102 are hinged. The hinged connection can be hinged by a hinge pin 103. The second ends of the first hoop 101 and the second hoop 102 are equipped with buckles, and the protrusion 104 is used to be inserted and positioned with the positioning groove. The top surface of the first hoop 101 or the second hoop 102 contacts the bottom surface of the bus 5. The positioning seat 2 is installed on the positioning clamp 1 and is used to abut against the bus 5 for positioning. The positioning seat 2 can be installed on the first hoop 101 or the second hoop 102. The positioning seat 2 is a gate-shaped structure as a whole, and the two ends of the positioning seat 2 are bases 204. The base 204 is connected to the first hoop 101 or the second hoop 102 by fasteners.

[0032] One end of the positioning clamp 1 clamped on the iron core of the flat wire stator is the winding outlet end, which has multiple winding lead wires 41, and the lead wires 41 need to be matched and welded with the lead wires 51. The buckle has various forms of structure, which can be selected according to actual needs.

[0033] The inner sides of the first hoop 101 and the second hoop 102 have a structure adapted to the outer shape of one end of the flat wire stator core. Due to the cooperation of the projection 104 and the positioning groove, the positioning clamp 1 can only be inserted into the flat wire stator at a specific angle, and accordingly, the positioning seat 2 is also aligned with the busbar at a specific angle. The first hoop 101 and the second hoop 102 are buckled together by a buckle, and the positioning clamp 1 is in contact with the flat wire stator core. After the bottom surface of the busbar 5 is in contact with the top surface of the first hoop 101 or the second hoop 102, the distance between the busbar 5 and the end surface of the flat wire stator core is controlled within the standard range.

[0034] According to the flat wire stator positioning tool of the utility model, a protrusion is provided on the positioning clamp, and the protrusion can be inserted into the positioning groove, so that the positioning clamp is inserted into the flat wire stator at a specific angle, and buckles are provided at the ends of the first hoop and the second hoop. Compared with the bolt disassembly and assembly in the prior art, the operation of the tool is simpler, less time-consuming, wear is reduced, and the service life is extended.

[0035] In some embodiments, Figure 2 As shown, the buckle comprises a hook 105, a buckle body 106, a pressing plate 107 and a loop 109, wherein the hook 105 is mounted on the first hoop 101, the buckle body 106 is mounted on the second hoop 102, one end of the pressing plate 107 is hinged with the buckle body 106, and the middle part of the pressing plate 107 is hinged with one end of the loop 109. When fastening, the pressing plate 107 is lifted to sleeve one end of the loop 109 on the side of the hook 105, and then the pressing plate 107 is pressed to complete the fastening of the first hoop 101 and the second hoop 102. When separating, the pressing plate 107 is lifted and the loop 109 is removed from the hook 105 to complete the separation. It should be noted that the upper and lower sides of the loop 109 can be provided with length adjustment devices to adjust the best fastening effect.

[0036] The inner sides of the first hoop 101 and the second hoop 102 have a structure that matches the outer shape of one end of the flat wire stator core. In specific implementation, the inner side of the bottom of the first hoop 101 has a first step base 1011, and the inner side of the bottom of the inner side of the second hoop 102 has a second step base 1012. The shapes of the first step base 1011 and the second step base 1012 are matched with the outer wall and end face of the flat wire stator core. The distance between the horizontal plane of the first step base 1011 and the top surface of the first hoop 101 is designed according to the installation height of the busbar 5.

[0037] The inner wall of the second hoop 102 is provided with an avoidance groove 108, and the protrusion 104 is arranged in the avoidance groove 108. A temperature sensor is installed in the flat wire stator winding, and the temperature sensor adopts an NTC (negative temperature coefficient) sensor. The lead of the temperature sensor needs to be led out from the flat wire stator winding. The function of the avoidance groove 108 is to prevent the installation of the positioning clamp 1 from crushing the lead of the temperature sensor. The protrusion 104 is arranged in the avoidance groove 108 for easy observation and is conducive to adjusting the position of the positioning clamp.

[0038] In some embodiments, the positioning seat 2 is installed above the avoidance groove 108, and the inner side of the positioning seat 2 has a plurality of vertically arranged contoured steps 201, and the contoured steps 201 are provided with mounting holes 202 arranged in a horizontal direction. The contour of the contoured steps 201 covers two adjacent side surfaces of the three-phase terminal on the busbar 5. In order to prevent the busbar from moving during the subsequent welding process, fasteners are used to pass through the mounting holes 202 and fix them to the connection holes on the three-phase terminal.

[0039] A third step seat 203 in the horizontal direction is provided on the contoured step 201, and the distance from the horizontal plane of the third step seat 203 to the top surface of the second hoop 102 is configured as the standard height of the three-phase lead terminal of the busbar 5. In other words, after the busbar 5 is welded to the winding 4, the three-phase lead terminal of the busbar 5 should be at the same height as the horizontal plane of the third step seat 203. It should be noted that the height of the three-phase lead terminal of the busbar 5 is designed according to actual needs and is not at the same height. Therefore, in one embodiment, as shown in FIG. Figure 1 As shown, the number of the third step seats 203 is 2, which is adapted to the height of the two-phase lead terminals, and the top surface height of the positioning seat 2 is configured to be the standard height of the other phase lead terminal. This arrangement facilitates process inspection and ensures the production quality of the flat wire stator.

[0040] The applicant has found that in the prior art, after the busbar 5 is welded to the winding 4, the height of the welding points of the winding lead wire 41 and the lead wire 51 needs to be inspected one by one using a height detection ruler, and the detection efficiency is low.

[0041] To this end, in some embodiments, such as Figure 3 As shown, the flat wire stator positioning tool also includes a welding point height gauge 3, which is provided with a plurality of inspection holes 302, and the welding point height gauge 3 is in contact with the top surface of the positioning seat 2. The top surface of the positioning seat 2 is used as a reference plane, and the position of the inspection hole 302 is located at the standard height of the welding point. When the welding point extends from the inspection hole 302, it is determined that the welding point at this location is unqualified.

[0042] Specifically, the weld height gauge 3 includes a positioning plate 301, a top plate 303 and a support column 305. The overall shapes of the positioning plate 301 and the top plate 303 are arc sheets. The top plate 303 is located above the positioning plate 301. The positioning plate 301 and the top plate 303 are connected by the support column 305. The inspection hole 302 is located on the positioning plate 301. The lengths of the support columns 305 are consistent, so that the positioning plate 301 and the top plate 303 are arranged in parallel. The inner side of the top plate 303 is connected to the outer side of the positioning plate 301 through the support column 305. The bottom of the top plate 303 is provided with a profiling base 304 adapted to the profiling step 201. When the top plate 303 is placed on the positioning seat 2, the cooperation of the profiling base 304 and the profiling step 201 limits the weld height gauge 3 to an appropriate position, so that each weld point is directly opposite to the inspection hole 302. By observing the heights of the welding points in the plurality of inspection holes 302, it is possible to determine at one time whether the welding heights of all welding points are qualified, thereby improving the inspection efficiency.

[0043] In addition, in order to prevent interference with the three-phase connection terminals on the busbar 5 , an avoidance groove 306 is provided on the outer edge of the positioning plate 301 .

[0044] In summary, the advantages of the flat wire stator positioning tooling in the embodiment of the utility model are: first, the operating efficiency is improved by buckling, and no external tool tooling is required, the use cost is low, and there is no need to repeatedly remove the screws, which avoids thread wear and extends the life of the tooling. Second, the hollow design of the interference position is added to avoid potential risks during use. Third, the tooling adds a matching weld height gauge to ensure that the weld height of the flat wire motor meets the standard, reducing the complexity of using a test ruler to check the welds one by one.

[0045] It should be noted that, in the description of the present invention, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, in the description of the present invention, unless otherwise specified, the meaning of "plurality" is two or more.

[0046] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0047] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0048] In the description of the present invention, the directions or positional relationships indicated by the terms "left", "right", "front", "rear", etc. are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0049] Any process or method description in the flowchart or otherwise described herein may be understood to represent a module, fragment or portion of code that includes one or more executable instructions for implementing the steps of a specific logical function or process, and the scope of the preferred embodiments of the present invention includes alternative implementations in which functions may not be performed in the order shown or discussed, including performing functions in a substantially simultaneous manner or in the reverse order depending on the functions involved, which should be understood by technicians in the technical field to which the embodiments of the present invention belong.

[0050] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0051] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A flat wire stator positioning tool, the flat wire stator comprising a busbar (5), the outer side wall of the flat wire stator having a vertically arranged positioning groove, characterized in that: include: A positioning clamp (1) is used to clamp one end of the iron core of the flat wire stator, the positioning clamp (1) comprising a first clamp sleeve (101), a second clamp sleeve (102) and a projection (104), the first ends of the first clamp sleeve (101) and the second clamp sleeve (102) are hinged, the second ends of the first clamp sleeve (101) and the second clamp sleeve (102) are equipped with buckles, the projection (104) is used to be inserted into the positioning groove for positioning, and the top surface of the first clamp sleeve (101) or the second clamp sleeve (102) contacts the bottom surface of the busbar (5); A positioning seat (2) is mounted on the positioning clamp (1) and is used to abut against and position the busbar (5).

2. The flat wire stator positioning tool according to claim 1, characterized in that: The buckle comprises a hook (105), a buckle body (106), a pressing plate (107) and a loop (109); the hook (105) is mounted on a first hoop (101); the buckle body (106) is mounted on the second hoop (102); one end of the pressing plate (107) is hinged to the buckle body (106); and the middle part of the pressing plate (107) is hinged to one end of the loop (109).

3. The flat wire stator positioning tool according to claim 1, characterized in that: The first hoop (101) has a first step base (1011) on the inner side of the bottom, and the second hoop (102) has a second step base (1012) on the inner side of the bottom.

4. The flat wire stator positioning tool according to claim 1, characterized in that: The inner wall of the second hoop (102) is provided with an avoidance groove (108), and the protrusion (104) is arranged in the avoidance groove (108).

5. The flat wire stator positioning tool according to claim 4, characterized in that: The positioning seat (2) is installed above the avoidance groove (108), and the inner side of the positioning seat (2) has a plurality of vertically arranged contour steps (201), and the contour steps (201) are provided with mounting holes (202) arranged in the horizontal direction.

6. The flat wire stator positioning tool according to claim 5, characterized in that: The contoured step (201) is provided with a third step seat (203) in the horizontal direction, and the distance from the horizontal plane of the third step seat (203) to the top surface of the second hoop (102) is configured as the standard height of the phase lead terminal of the busbar (5).

7. The flat wire stator positioning tool according to claim 6, characterized in that: It also comprises a welding point height gauge (3), the welding point height gauge (3) being provided with a plurality of inspection holes (302), and the welding point height gauge (3) being in contact with the top surface of the positioning seat (2).

8. The flat wire stator positioning tool according to claim 7, characterized in that: The welding point height inspection tool (3) comprises a positioning plate (301), a top plate (303) and a support column (305); the positioning plate (301) and the top plate (303) are both arc-shaped in overall appearance; the top plate (303) is located above the positioning plate (301); the positioning plate (301) and the top plate (303) are connected via the support column (305); and the inspection hole (302) is located on the positioning plate (301).

9. The flat wire stator positioning tool according to claim 8, characterized in that: The inner side of the top plate (303) is connected to the outer side of the positioning plate (301) via the support column (305), and the bottom of the top plate (303) is provided with a contoured base (304) adapted to the contoured step (201).

10. The flat wire stator positioning tool according to claim 8, characterized in that: An escape groove (306) is provided on the outer edge of the positioning plate (301).

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