Motor stator outgoing line busbar structure

Abstract

The utility model discloses a motor stator outgoing line busbar structure, which comprises a support, a plurality of copper bars and a plurality of pins, the support is annular, the support is coaxially sleeved outside a motor stator, one surface of the support is used for being detachably connected with a coil holder of the motor stator, the support is provided with a plurality of first positioning holes, and the plurality of first positioning holes are annularly distributed on the support; the copper bar is formed by bending a flat copper wire for multiple times, the copper bar is provided with a plurality of second positioning holes, the second positioning holes are in one-to-one correspondence with the first positioning holes, the copper bar is arranged on the support so that the second positioning holes can be aligned with the corresponding first positioning holes, the copper bar is provided with one or more wire outlet terminals, and the wire outlet terminals are used for being connected with wire outlet heads of the windings; each pin corresponds to and is connected with one copper bar, one end, far away from the corresponding copper bar, of the pin is provided with a pin terminal, and one end, far away from the pin terminal, of the pin is fixedly connected with the support. The motor stator outgoing line busbar structure can solve the problems that an existing motor stator outgoing line busbar structure is complex in structure and high in preparation cost.

Description

A stator busbar structure for an electric motor Technical Field

[0001] This utility model relates to the field of motor technology, specifically to a stator busbar structure for a motor. Background Technology

[0002] The stator busbar structure is the electrical connection component of the motor stator winding, responsible for connecting the internal stator winding of the motor to the external power supply system. Therefore, its structure and design are very important for the normal operation and efficiency of the motor.

[0003] The stator busbar structure of the motor mainly includes a bracket, multiple copper busbars and multiple pins. The bracket is fixedly connected to the wire frame of the motor stator to provide structural support for the copper busbars and pins. The copper busbars are fixedly installed inside the bracket. One end of each pin is connected to the corresponding copper busbar, and the other end is provided with a pin terminal. The copper busbars are provided with outgoing terminals and are connected to the outgoing ends of the windings through the outgoing terminals.

[0004] The existing stator busbar structure of motors generally has the following problems in its design: because the copper busbar is made by stamping copper plates, the material utilization rate is low, the structure is complex and the process cost is high. Summary of the Invention

[0005] The purpose of this invention is to provide a stator busbar structure for motors that can solve the problems of complex structure and high manufacturing cost of existing stator busbar structures.

[0006] This utility model is achieved through the following technical solution:

[0007] A stator busbar structure for a motor includes a bracket, which is ring-shaped and coaxially fitted onto the stator. One side of the bracket is detachably connected to the stator's wire frame. The bracket has multiple first positioning holes arranged in a ring. Multiple copper busbars, formed by repeatedly bending flat copper wire, each have several second positioning holes corresponding to one of the first positioning holes. The copper busbars are positioned on the bracket to align the second positioning holes with their corresponding first positioning holes. Each copper busbar has one or more output terminals for connecting to the output ends of windings. Multiple pins, each corresponding to and connected to one of the copper busbars, have a pin terminal at the end furthest from the corresponding copper busbar, and the end furthest from the pin terminal is fixedly connected to the bracket.

[0008] Optionally, the bracket includes a disc portion and a cylindrical portion coaxially connected, the outer diameter of the disc portion being larger than the outer diameter of the cylindrical portion; the height of the cylindrical portion being slightly larger than the width of the copper busbar; all the first positioning holes are formed on the side wall of the cylindrical portion; all the copper busbars are arranged in two radial layers along the inner and outer sides of the cylindrical portion, so that the outgoing terminals of the copper busbars are circumferentially distributed on the outer side wall of the cylindrical portion.

[0009] Optionally, the disk portion has multiple weight-reduction holes extending through it along the thickness direction.

[0010] Optionally, the outer wall of the cylinder is provided with a plurality of reinforcing ribs protruding radially. The reinforcing ribs are in the shape of right-angled triangular plates. One right-angled side of the reinforcing rib is fixedly connected to the outer wall of the cylinder, and the other right-angled side is fixedly connected to the disk surface of the disk.

[0011] Optionally, a plurality of buckles are provided along the axial direction at the edge of the disc, the buckles being used for detachable engagement with the wire frame of the motor stator.

[0012] Optionally, a fixing platform is provided on the outer side wall of the cylinder, and multiple protective sheaths are provided on the fixing platform along the axial direction of the cylinder. A through hole is opened in the middle of the protective sheath along the length direction, and both ends of the through hole pass through the protective sheath. The protective sheath corresponds one-to-one with the pin, and the pin passes through the through hole of the corresponding protective sheath.

[0013] Optionally, the surface of the fixed platform is provided with multiple positioning grooves.

[0014] Optionally, the end face and outer side wall of the cylinder are provided with a plurality of positioning blocks.

[0015] Optionally, the number of copper busbars is four, namely U-phase copper busbar, V-phase copper busbar, W-phase copper busbar and N-phase copper busbar; the number of pins is three, and they are respectively connected to the U-phase copper busbar, the V-phase copper busbar and the W-phase copper busbar.

[0016] Compared with the prior art, this utility model has the following advantages and beneficial effects:

[0017] The present invention provides a motor stator busbar structure. By setting a bracket and setting it in a ring shape, it can be coaxially fitted to the outside of the motor stator when connected to the wire frame of the motor stator. By opening multiple first positioning holes in the bracket and multiple second positioning holes in the copper busbar, the copper busbar is aligned and fixedly connected to the surface of the bracket. Since the copper busbars do not share the first positioning holes, all the copper busbars can be arranged in a double layer inside the bracket without interference. By setting pins, one end is connected to the copper busbar and the other end is set with pin terminals to realize the function of the motor stator busbar structure. The above-mentioned motor stator busbar structure also has the following advantages: (1) flat copper wire is bent instead of copper plate stamping, which improves the material utilization rate. (2) U, V and W three-phase copper busbars are respectively provided with one or more outgoing terminals, which optimizes the outgoing method, saves material costs and solves the problem of complex structure. Attached Figure Description

[0018] The accompanying drawings, which are included to provide a further understanding of the embodiments of the present invention and form part of this application, do not constitute a limitation thereof. In the drawings:

[0019] Figure 1 is a schematic diagram of the stator busbar structure of the motor provided in an embodiment of the present invention;

[0020] Figure 2 is a schematic diagram of the motor stator busbar structure after removing the pins and copper busbars according to the embodiment of this utility model;

[0021] Figure 3 is a schematic diagram of the pins and copper busbars of the motor stator output busbar structure provided in this embodiment of the present invention.

[0022] The attached diagram shows the markings and corresponding component names:

[0023] 10-Bracket; 101-Disc; 102-Cylinder; 103-Weight Reduction Hole; 104-Snap-on; 105-Reinforcing Rib; 106-Positioning Block; 11-First Positioning Hole; 12-Fixing Platform; 121-Positioning Groove; 13-Sheath; 20-Copper Busbar; 201-U-Phase Copper Busbar; 202-V-Phase Copper Busbar; 203-W-Phase Copper Busbar; 204-N-Phase Copper Busbar; 2041-Outgoing Terminal; 30-Pin; 31-Pin Terminal. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings. The illustrative embodiments and descriptions of this utility model are only used to explain this utility model and are not intended to limit this utility model.

[0025] Example

[0026] Referring to Figures 1 to 3, this embodiment provides a motor stator busbar structure, including a bracket 10, which is annular and coaxially fitted onto the motor stator. One side of the bracket 10 is detachably connected to the stator's wire frame. The bracket 10 has multiple first positioning holes 11 arranged annularly. The second component includes multiple copper busbars 20, which are formed by repeatedly bending flat copper wire. Each copper busbar 20 has several second positioning holes, which are connected to the stator's wire frame. The first positioning holes 11 correspond one-to-one. The copper busbar 20 is disposed on the bracket 10 so that the second positioning hole is aligned with the corresponding first positioning hole 11. The copper busbar 20 is provided with one or more outgoing terminals 2041. The outgoing terminals 2041 are used to connect with the outgoing ends of the winding. The third part includes multiple pins 30. Each pin 30 corresponds to and is connected to one of the copper busbars 20. The end of the pin 30 away from the corresponding copper busbar 20 is provided with a pin terminal 31. The end of the pin 30 away from the pin terminal 31 is fixedly connected to the bracket 10.

[0027] The stator busbar structure provided in this embodiment uses a bracket 10 in a ring shape to coaxially fit around the stator when connected to the stator's wire frame. Multiple first positioning holes 11 are provided in the bracket 10, and multiple second positioning holes are provided in the copper busbars 20, aligning and fixing the copper busbars 20 inside the bracket 10. Since the copper busbars 20 do not share the first positioning holes 11, all copper busbars 20 can be arranged in a double layer inside the bracket 10 without interference. Pins 30 are provided, with one end connected to the copper busbar 20 and the other end having a pin terminal, thus realizing the function of the stator busbar structure. Through the cooperation of these features, this stator busbar structure effectively solves the problems of complex structure and high manufacturing cost of existing stator busbar structures.

[0028] It should be noted that in this embodiment, the copper busbar 20 is formed in one step using a flat wire bending process, the pin 30 is formed using a flat wire bending process, the output terminal 31 is formed using a stamping process, and the bracket 10 is formed by one or more plastic injection molding processes.

[0029] To further explain the specific structure of the bracket 10, the bracket 10 includes a disc portion 101 and a cylindrical portion 102 coaxially connected. The outer diameter of the disc portion 101 is larger than the outer diameter of the cylindrical portion 102. The height of the cylindrical portion 102 is slightly larger than the width of the copper busbar 20. All the first positioning holes 11 are opened on the side wall of the cylindrical portion 102. All the copper busbars 20 are arranged in two layers, inner and outer, along the radial direction of the cylindrical portion 102, so that the outgoing terminals 2041 of the copper busbars 20 are circumferentially distributed on the outer side wall of the cylindrical portion 102.

[0030] With the above arrangement, the bent copper busbar 20 can be arranged along the outer wall of the cylinder 102 so that the width direction of the copper busbar 20 is parallel to the axis of the cylinder 102. At the same time, the disc 101 provides structural support for one side of the copper busbar 20 in the width direction, thereby effectively improving the structural stability of the copper busbar 20.

[0031] In order to reduce weight while ensuring the structural performance of the disk 101 and increase the exposure of the copper busbar 20, the disk 101 is provided with a plurality of weight reduction holes 103 through the thickness direction.

[0032] To improve the structural performance of the disc portion 101, multiple reinforcing ribs 105 are radially protruding from the outer wall of the cylindrical portion 102. Each reinforcing rib 105 is in the shape of a right-angled triangular plate. One right-angled side of the reinforcing rib 105 is fixedly connected to the outer wall of the cylindrical portion 102, and the other right-angled side is fixedly connected to the disc surface of the disc portion 101.

[0033] To further explain the detachable connection structure between the bracket 10 and the wire frame of the motor stator, a plurality of buckles 104 are provided axially at the edge of the disc portion 101, and the buckles 104 are used for detachable engagement with the wire frame of the motor stator.

[0034] It should be noted that the motor stator has slots on the wire frame that correspond to the clip 104.

[0035] To provide structural protection and guidance for the pins 30, a fixing platform 12 is provided on the outer side wall of the cylindrical portion 102. Multiple protective sheaths 13 are provided on the fixing platform 12 along the axial direction of the cylindrical portion 102. A through hole is opened in the middle of the protective sheath 13 along the length direction, and both ends of the through hole pass through the protective sheath 13. The protective sheath 13 corresponds one-to-one with the pins 30, and the pins 30 pass through the through holes of the corresponding protective sheaths 13.

[0036] To facilitate the fixing of the three-phase lines, multiple positioning grooves 121 are provided on the surface of the fixing platform 12.

[0037] To further facilitate the fixing of the three-phase lines, a plurality of positioning blocks 106 are provided on the end face and outer side wall of the cylindrical part 102.

[0038] It should be noted that in this embodiment, there are four copper busbars 20, namely U-phase copper busbar 201, V-phase copper busbar 202, W-phase copper busbar 203 and N-phase copper busbar 204; there are three pins 30, which are respectively connected to the U-phase copper busbar 201, the V-phase copper busbar 202 and the W-phase copper busbar 203.

[0039] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above description is only a specific embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A stator busbar structure for an electric motor, characterized in that, include: A bracket (10) is ring-shaped and coaxially fitted onto the outside of the motor stator. One side of the bracket (10) is detachably connected to the wire frame of the motor stator. The bracket (10) has multiple first positioning holes (11) arranged in a ring. Multiple copper busbars (20) are formed by repeatedly bending flat copper wire. Each copper busbar (20) has several second positioning holes, which correspond one-to-one with the first positioning holes (11). The second positioning hole is provided on the bracket (10) so that the second positioning hole is aligned with the corresponding first positioning hole (11). The copper busbar (20) is provided with one or more outgoing terminals (2041), which are used to connect with the outgoing head of the winding. Multiple pins (30) are provided, each pin (30) corresponding to and connected to one of the copper busbars (20). The end of the pin (30) away from the corresponding copper busbar (20) is provided with a pin terminal (31), and the end of the pin (30) away from the pin terminal (31) is fixedly connected to the bracket (10).

2. The stator busbar structure of the motor according to claim 1, characterized in that, The bracket (10) includes a disc portion (101) and a cylindrical portion (102) coaxially connected. The outer diameter of the disc portion (101) is larger than the outer diameter of the cylindrical portion (102). The height of the cylindrical portion (102) is slightly larger than the width of the copper busbar (20). All the first positioning holes (11) are opened on the side wall of the cylindrical portion (102). All the copper busbars (20) are arranged in two layers along the radial direction of the cylindrical portion (102), so that the outgoing terminals (2041) of the copper busbars (20) are circumferentially distributed on the outer side wall of the cylindrical portion (102).

3. The stator busbar structure of the motor according to claim 2, characterized in that, The disk (101) has multiple weight-reducing holes (103) extending through it along the thickness direction.

4. The stator busbar structure of the motor according to claim 3, characterized in that, The outer wall of the cylindrical part (102) is provided with a plurality of reinforcing ribs (105) protruding radially. The reinforcing ribs (105) are in the shape of right-angled triangular plates. One right-angled side of the reinforcing ribs (105) is fixedly connected to the outer wall of the cylindrical part (102), and the other right-angled side is fixedly connected to the disk surface of the disk part (101).

5. The stator busbar structure of the motor according to claim 2, characterized in that, The edge of the disc (101) is provided with a plurality of buckles (104) protruding axially, the buckles (104) being used to detachably engage with the wire frame of the motor stator.

6. The stator busbar structure of the motor according to claim 2, characterized in that, A fixing platform (12) is provided on the outer side wall of the cylindrical part (102). The fixing platform (12) is provided with multiple protective sheaths (13) along the axial direction of the cylindrical part (102). A through hole is opened in the middle of the protective sheath (13) along the length direction. Both ends of the through hole pass through the protective sheath (13). The protective sheath (13) corresponds to the pin (30) one by one. The pin (30) passes through the through hole of the corresponding protective sheath (13).

7. The stator busbar structure of the motor according to claim 6, characterized in that, The surface of the fixed platform (12) has multiple positioning grooves (121).

8. The stator busbar structure of the motor according to claim 7, characterized in that, The end face and outer wall of the cylindrical part (102) are provided with a plurality of positioning blocks (106).

9. The stator busbar structure of the motor according to claim 1, characterized in that, The number of copper busbars (20) is 4, namely U-phase copper busbar (201), V-phase copper busbar (202), W-phase copper busbar (203) and N-phase copper busbar (204); the number of pins (30) is 3, and they are respectively connected to the U-phase copper busbar (201), the V-phase copper busbar (202) and the W-phase copper busbar (203).

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