Motor stator assembly with novel wiring terminal seat and motor

Abstract

The utility model discloses a motor stator assembly with a novel wiring terminal seat, which comprises a stator iron core, an end insulator and a coil winding, the end insulator is arranged on the stator iron core, the coil winding is wound on the stator iron core, the wiring terminal seat is arranged on the end insulator in a protruding manner, and the wiring terminal seat is arranged on the stator iron core. The wiring terminal seat is provided with a slot for inserting a wiring terminal; the coil winding comprises a U-phase coil, a V-phase coil and a W-phase coil; the wire blocking part extending from the end insulation side face of the neutral point enables the gap bridge wires to be in the middle, only two gap bridge wires are arranged, the problems of laser paint removal and poor soldering tin quality consistency caused by accumulation of three gap bridge wires in the prior art are solved, the welding spot quality reliability is high, the winding production efficiency is improved, the end insulation side face supports a slope, and the production efficiency is improved. And the supporting columns are additionally arranged below the terminals, so that the situation that the terminals incline downwards in the wire winding process, and the consistency of laser paint removal and welding is affected is avoided.

Description

Technical Field

[0001] The utility model relates to the field of motors, in particular to a motor stator component with a novel wiring terminal seat and a motor. Background Art

[0002] The stator assembly in the current plastic-encapsulated brushless DC motor is made of stator core, plastic end insulation, bridge coil and terminal blocks after processing and injection molding. The terminal blocks are mainly used as the intermediate medium for connecting the lead wire or circuit board to the bridge coil, and are an important part of the stator assembly. The stator assembly end insulation design, terminal design, and wiring process plan are directly related to the reliability of the bridge wire connection and affect production efficiency.

[0003] like Figure 1 , Figure 2 and Figure 3 Shown is a schematic diagram of existing wiring terminals;

[0004] 1. The bridge wire 31a of the coil winding 3a passes through the end insulation 2a, passes through the groove 51a of the terminal 5a, and then is wound around the end 52a of the terminal 5a;

[0005] 2. For single phase, one bridge wire 31a is placed on terminal 5a, and for neutral point, three bridge wires 31a are placed on terminal 5a;

[0006] 3. Laser stripping of the groove 51a is performed, followed by laser soldering;

[0007] 4. After the strip-type stator wiring is rolled and processed, BMC injection molding is performed.

[0008] Technical problems existing in existing technologies:

[0009] 1. Neutral point: three bridge wires 31a are placed on the terminal 5a, the production winding efficiency is low, the three bridge wires 31a are piled up, the laser paint stripping welding consistency is poor, it is easy to have cold soldering, and the defective rate is about 10%.

[0010] 2. Terminal 5a is suspended in the air, and it is easy to become skewed when winding the wire, resulting in poor stability of laser paint stripping and laser soldering.

[0011] 3. The bridge wire 31a at the welding point between the coil 3a and the terminal 5a is in a suspended state. During the subsequent injection molding process, the bridge wire 31a is impacted by the BMC material and is easily broken. Summary of the invention

[0012] One purpose of the utility model is to provide a motor stator assembly and a motor with a novel terminal block, so as to solve the technical problems in the prior art that the neutral points of three bridge wires are placed on the terminals, resulting in low production efficiency, poor consistency of laser paint stripping welding due to the accumulation of bridge wires, easy cold welding, and a defective rate of about 10%.

[0013] The technical solution of the utility model is implemented as follows: a motor stator assembly with a novel terminal block, comprising a stator core, an end insulation and a coil winding, wherein the end insulation is installed on the stator core, the coil winding is wound on the stator core, a terminal block is protruding on the end insulation, a slot is provided on the terminal block for inserting the terminal, and the coil winding comprises a U-phase coil, a V-phase coil and a W-phase coil; the terminal comprises a connecting end, a platform end and a terminal, the connecting end is inserted into the slot of the terminal block, the terminal extends outward from the right side of the platform end in an L shape, a wire blocking portion extending toward the terminal direction is provided on the right side of the terminal block, the wire blocking portion is higher than the upper surface of the terminal, the tail of the U-phase coil bridge wire is wound on the terminal, the U-phase coil bridge wire passes through the platform end, the bridge wire between the V-phase coil and the W-phase coil passes through the platform end and the wire blocking portion from one side of the terminal block and then enters the other side, the wire blocking portion makes the U-phase coil bridge wire above the platform end and the bridge wire between the V-phase coil and the W-phase coil flush, which is convenient for welding.

[0014] Furthermore, a first supporting boss is provided on the left side of the terminal block, and the U-phase coil bridge wire and the bridge wire between the V-phase coil and the W-phase coil crawl along the first supporting boss to above the platform end.

[0015] Furthermore, a second supporting boss is provided on the right side of the wire blocking portion, and the bridge wire between the V-phase coil and the W-phase coil crawls along the second supporting boss.

[0016] Furthermore, a support column extending toward the wiring terminal is provided between the wire blocking portion and the wiring terminal, and the bottom of the wiring terminal is supported on the support column.

[0017] Furthermore, the first supporting boss and the second supporting boss are both in a slope shape.

[0018] Furthermore, the outer side surface of the right side of the terminal block is flush with the front side surface of the wire blocking portion close to the terminal, so that the bridge wire between the V-phase coil and the W-phase coil is straight when passing through the platform end.

[0019] Furthermore, a groove is provided in the middle of the platform end, and the bridge wire between the V-phase coil and the W-phase coil and the bridge wire of the U-phase coil are welded in the groove.

[0020] A motor comprises a stator assembly and a rotor assembly. The stator assembly adopts the motor stator assembly with a novel terminal seat as described above.

[0021] Compared with the prior art, the utility model has the following advantages:

[0022] 1. A wire blocking part extending toward the terminal block is provided on the right side of the terminal block at the neutral point, so that the bridge wire is centered. There are only two bridge wires, which avoids the problems of laser paint stripping and poor soldering quality consistency caused by the accumulation of three bridge wires in the past. The quality reliability of the solder joints is high, and the production efficiency of winding is improved.

[0023] 2. The first supporting boss and the second supporting boss are set on the side of the terminal block to avoid the bridge wire between the solder joint and the coil from being suspended in the air, thereby reducing the risk of wire breakage during BMC injection molding.

[0024] 3. The bottom of the terminal is supported on the support column to prevent the terminal from tilting downward when winding the wire, which will affect the consistency of laser paint stripping and welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a three-dimensional schematic diagram of the overall structure of a bar stator provided in the prior art;

[0026] Figure 2 It is a schematic diagram of the connection method of the three-phase motor bridge line in the prior art;

[0027] Figure 3 yes Figure 1 A partial enlarged structural diagram of part A;

[0028] Figure 4 It is a three-dimensional schematic diagram of the overall structure of the bar stator provided in the utility model;

[0029] Figure 5 yes Figure 4 The schematic diagram of the partial enlarged structure of part B in the middle;

[0030] Figure 6 yes Figure 4 A schematic diagram of the partially enlarged structure of C in the middle;

[0031] Figure 7 This is a three-dimensional diagram of the wiring terminal structure provided by the utility model;

[0032] Figure 8 It is a schematic diagram of the bridge line connection method provided by the utility model. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0034] like Figures 4 to 8 As shown, this embodiment provides: a motor stator assembly with a new terminal block, including a stator core 1, an end insulation 2 and a coil winding 3, the end insulation 2 is installed on the stator core 1, the coil winding 3 is wound on the stator core 1, a terminal block 4 is protrudingly provided on the end insulation 2, a slot 41 is provided on the terminal block 4 for inserting a terminal 5, the coil winding 3 includes a U-phase coil, a V-phase coil and a W-phase coil; the terminal 5 includes a connecting end 51, a platform end 52 and a terminal 53, the connecting end 51 is inserted into the slot 41 of the terminal block 4, and the terminal 5 3 extends outward from the right side of the platform end 52 in an L shape, and a wire blocking portion 43 extending toward the direction of the terminal 5 is provided on the right side of the terminal block 4, and the wire blocking portion 43 is higher than the upper surface of the terminal 5. The tail of the U-phase coil bridge wire 31 is wound on the terminal 53, and the U-phase coil bridge wire 31 passes through the platform end 52, and the bridge wire 32 between the V-phase coil and the W-phase coil passes through the platform end 52 and the wire blocking portion 43 from one side of the terminal block 4 and enters the other side. The wire blocking portion 43 makes the U-phase coil bridge wire 31 above the platform end 52 and the bridge wire 32 between the V-phase coil and the W-phase coil flush, which is convenient for welding.

[0035] After the bridge wire is led out from the coil winding, it passes through the platform end and the wire stopper from one side of the terminal block and enters the other side. After winding the wire, it is laser stripped, welded, and injection molded. The wire stopper extending from the side of the insulation at the neutral point end centers the bridge wire, and there are only two bridge wires, avoiding the problems of laser stripping and poor consistency of solder quality caused by the accumulation of three bridge wires in the past. The quality reliability of the solder joints is high, and the production efficiency of winding is improved.

[0036] Furthermore, a first supporting boss 42 is provided on the left side of the terminal block 4, and the U-phase coil bridge wire 31 and the bridge wire 32 between the V-phase coil and the W-phase coil crawl along the first supporting boss 42 to above the platform end 52, avoiding the bridge wire at the welding point and the coil from being suspended in the air, thereby reducing the risk of the BMC injection molding wire breaking.

[0037] The top surface of the first support boss 42 forms an angle with the side wall of the terminal block 4. The side wall of the terminal block and the side wall of the first support boss are greater than 0.5 mm, and the angle is between 45° and 75°, to prevent the coil winding bridge wire from falling off the first support boss when crawling along the angle.

[0038] A second supporting boss 44 is provided on the right side of the wire blocking portion 43, and the bridge wire 32 between the V-phase coil and the W-phase coil crawls along the second supporting boss 44. Avoid the bridge wire hanging in the solder joint and the coil, and reduce the risk of wire breaking during injection molding.

[0039] Furthermore, a support column 45 extending toward the terminal 5 is provided between the wire blocking portion 43 and the terminal 5, and the bottom of the terminal 5 is supported on the support column 45. The support column is added below the terminal to prevent the terminal from tilting downward when winding the wire, which affects the consistency of laser stripping and welding.

[0040] Furthermore, the first supporting boss 42 and the second supporting boss 44 are both in a slope shape, which facilitates the crawling of the bridge line.

[0041] Furthermore, the outer side surface 46 of the right side of the terminal block 4 is flush with the front side surface 431 of the wire blocking portion 43 close to the terminal 53, so that the bridge wire 32 between the V-phase coil and the W-phase coil is straight when passing through the platform end 52. The bridge wires of the two coil windings are centered, which is convenient for laser and soldering.

[0042] Furthermore, a groove 521 is provided in the middle of the platform end 52 , and the bridge wire 32 between the V-phase coil and the W-phase coil and the bridge wire 31 of the U-phase coil are welded in the groove 521 .

[0043] The utility model: a bridge wire is led out from the coil winding, crawls along the first supporting boss to the platform end of the terminal block and is arranged side by side; subsequently, the U-phase coil bridge wire is wound around the terminal block; the V-phase coil and the W-phase coil bridge wire pass through the wire blocking portion and enter the second supporting boss from the side of the wire blocking portion; finally, the terminal is lasered and soldered in the groove at the platform end. Since the terminal is suspended, it is easy to skew when winding the wire, resulting in poor stability of laser paint stripping and laser soldering, so a support column for supporting the terminal block is arranged on the front side of the wire blocking portion.

[0044] Embodiment 2:

[0045] A motor comprises a stator assembly and a rotor assembly. The stator assembly adopts the motor stator assembly with a novel terminal block described in the first embodiment.

[0046] The above embodiments are preferred implementation modes of the present invention, but the implementation modes of the present invention are not limited thereto. Any other changes, modifications, substitutions, combinations, and simplifications made without departing from the spirit and principle of the present invention are equivalent replacement methods and are included in the protection scope of the present invention.

Claims

1. A motor stator assembly with a novel terminal block, comprising a stator core (1), an end insulation (2) and a coil winding (3), wherein the end insulation (2) is mounted on the stator core (1), the coil winding (3) is wound on the stator core (1), a terminal block (4) is protrudingly provided on the end insulation (2), a slot (41) is provided on the terminal block (4) for inserting a terminal (5), the coil winding (3) comprises a U-phase coil, a V-phase coil and a W-phase coil; the terminal (5) comprises a connection end (51), a platform end (52) and a connection end (53), the connection end (51) is inserted into the slot (41) of the terminal block (4), the connection end (53) extends outward from the right side of the platform end (52) in an L shape, characterized in that A wire stopper (43) extending toward the wiring terminal (5) is provided on the right side of the wiring terminal seat (4), the wire stopper (43) being higher than the upper surface of the wiring terminal (5), the tail of the U-phase coil bridge wire (31) being wound around the wiring terminal (53), the U-phase coil bridge wire (31) passing through the platform end (52), the bridge wire (32) between the V-phase coil and the W-phase coil passing through the platform end (52) and the wire stopper (43) from one side of the wiring terminal seat (4) and entering the other side, the wire stopper (43) making the U-phase coil bridge wire (31) above the platform end (52) and the bridge wire (32) between the V-phase coil and the W-phase coil flush with each other, thereby facilitating welding.

2. A motor stator assembly with a novel terminal block according to claim 1, characterized in that: A first supporting boss (42) is provided on the left side of the terminal block (4), and a U-phase coil bridge wire (31) and a bridge wire (32) between a V-phase coil and a W-phase coil crawl along the first supporting boss (42) to above the platform end (52).

3. The motor stator assembly with a novel terminal block according to claim 1, characterized in that: A second supporting boss (44) is provided on the right side of the wire blocking portion (43), and the bridge wire (32) between the V-phase coil and the W-phase coil crawls along the second supporting boss (44).

4. A motor stator assembly with a novel terminal block according to claim 1, 2 or 3, characterized in that: A support column (45) extending toward the connecting terminal (5) is provided between the wire blocking portion (43) and the connecting terminal (5), and the bottom of the connecting terminal (5) is supported on the support column (45).

5. The motor stator assembly with a novel terminal block according to claim 4 is characterized in that: The first supporting boss (42) and the second supporting boss (44) are both in a slope shape.

6. The motor stator assembly with a novel terminal block according to claim 2, characterized in that: The outer side surface (46) on the right side of the terminal seat (4) is flush with the front side surface (431) of the wire blocking portion (43) close to the terminal (53), so that the bridge wire (32) between the V-phase coil and the W-phase coil is straight when passing through the platform end (52).

7. The motor stator assembly with a novel terminal block according to claim 2, characterized in that: A groove (521) is provided in the middle of the platform end (52), and the bridge wire (32) between the V-phase coil and the W-phase coil and the bridge wire (31) of the U-phase coil are welded in the groove (521).

8. A motor, comprising a stator assembly and a rotor assembly, characterized in that: The stator assembly adopts a motor stator assembly with a novel terminal block as described in any one of claims 1 to 7.

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