Series excited motor with novel coil holder

Abstract

The utility model discloses a series excited motor with a novel coil holder. The series excited motor comprises a front support assembly, a rear support assembly, a stator assembly, a rotor assembly and fan blades. The rotor assembly is installed in the stator assembly, and the front support assembly and the rear support assembly are arranged at the front end and the rear end of the stator assembly respectively. The stator assembly comprises a stator chip and two groups of stator enameled wires embedded in the stator chip, and a front coil holder and a rear coil holder are arranged at the positions, corresponding to the end parts of the stator enameled wires, of the two ends of the stator chip respectively. According to the series excited motor, the front coil holder and the rear coil holder are used for fixing the two ends of the stator enameled wire respectively, and then the rubber binding tape is used for binding, so that the ends of the stator enameled wire are neat and are not loosened or short-circuited. In addition, the rubber binding belt does not shift, so that the fixing quality of the end part of the stator enameled wire is further ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to series excited motor motor technical field, concretely relates to a series excited motor with novel wire holder. BACKGROUND

[0002] The series excited motor is a kind of DC motor, its excitation winding is connected in series with armature winding, is widely used in household appliances, power tools.The series excited motor is mainly by stator, rotor and support three parts.And stator enameled wire is the important component of motor stator winding, usually by copper conductor outer covering insulating paint layer is formed, has good conductivity and insulation.Its function is to bear current, produce magnetic field, to realize the conversion of electric energy and mechanical energy.In order to fix the end of the stator enameled wire embedded in stator slot, ensure that motor runs stably, need to use insulating tape to wind stator enameled wire multiple turns or utilize fixing tape to fix, ensure that end is neat to prevent loosening or short circuit.In which, insulating tape is used for a long time, glue is prone to aging, can lead to stator enameled wire loosening.And in order to prevent insulating tape from falling off, need to use fixing tape to further fix tightly on insulating tape.In addition, motor will have different degrees of vibration in the process of using, after long time use, fixing tape is prone to deviation and lead to enameled wire loosening.

[0003] Therefore, how to design a kind of series excited motor, which can simplify the fixing operation steps of stator enameled wire end and prevent loosening, is a technical problem urgently needed in the art. CONTENT OF UTILITY MODEL

[0004] The utility model aims at solving the prior art's insufficient, provide a kind of series excited motor with novel wire holder, the motor utilizes wire holder and simplifies the fixing operation steps of stator enameled wire end and can prevent stator enameled wire loosening.

[0005] The utility model employs the technical scheme that a kind of series excited motor with novel wire holder, including front support assembly, rear support assembly, stator assembly, rotor assembly and fan blade;The rotor assembly is installed in stator assembly, and front support assembly, rear support assembly are respectively set in stator assembly front and rear two ends;

[0006] The stator assembly includes stator chip and two groups of stator enameled wire embedded in stator chip, and the stator chip two ends are respectively provided with front wire holder and rear wire holder at the corresponding position of stator enameled wire end portion, the front wire holder is close to front support assembly, and the rear wire holder is close to rear support assembly;First wire cavity and second wire cavity for embedding the end of stator enameled wire are respectively provided on the front wire holder and the rear wire holder, and the first wire cavity and the second wire cavity are "C" type;First gap and second gap for passing through adhesive fixing tape are respectively provided on the front wire holder and the rear wire holder.

[0007] Preferably, the front line frame comprises a first arc-shaped plate, upper and lower ends of the first arc-shaped plate are provided with a first pressing block and a first base on the side of the arc-shaped convexity respectively, and the middle part of the first base is recessed to form a first notch towards the first pressing block.

[0008] Preferably, the bottom of the first base is provided with a first mounting column outside the two sides of the first notch for clamping the end of the stator chip, and the stator chip is provided with a first mounting hole for the insertion of the first mounting column at the clamping position of the front line frame.

[0009] Preferably, the front line frame is provided with a first limiting groove for guiding the rubber band, and the first limiting groove extends from the top free end of the first pressing block to the first notch through the inner side of the first arc-shaped plate.

[0010] Preferably, the rear line frame comprises a second arc-shaped plate, upper and lower ends of the second arc-shaped plate are provided with a second pressing block and a second base on the side of the arc-shaped convexity respectively, and the middle part of the second base is recessed to form a second notch towards the second pressing block.

[0011] Preferably, the bottom of the second base is provided with a second mounting column outside the two sides of the second notch for clamping the end of the stator chip, and the stator chip is provided with a second mounting hole for the insertion of the second mounting column at the clamping position of the rear line frame.

[0012] Preferably, the rear line frame is provided with a second limiting groove for guiding the rubber band, and the second limiting groove extends from the top free end of the second pressing block to the second notch through the inner side of the second arc-shaped plate.

[0013] Preferably, the free end of the second pressing block is provided with a limiting block upwards outside the two sides of the second limiting groove for clamping the lead of the stator enameled wire.

[0014] Preferably, the two free ends of the second base are provided with an extended inclined part extending outwards, and the extended inclined part is close to the second arc-shaped plate.

[0015] Preferably, the free end of the extended inclined part is provided with a limiting column extending towards the second pressing block, and the limiting column is provided with a limiting hole for the insertion of the connection position of the stator enameled wire and the lead.

[0016] Compared with the prior art, the utility model has the following advantages:

[0017] The utility model discloses a series excited motor, utilize the front line frame and the rear line frame respectively fixed stator enameled wire's both end parts, its first line cavity and second line cavity are "C" type, then utilize the rubber band again and tie up, need not adopt the insulating adhesive tape and can ensure that stator enameled wire end part is neat, does not loosen or short circuit, has simplified stator enameled wire end part fixed operation step. In addition, the rubber band can be through first gap and second gap and limit, will not shift, further ensured the quality of stator enameled wire end part fixed. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the structural schematic diagram of the utility model.

[0019] Figure 2 It is the structural schematic diagram of the front line frame and the rear line frame installation on the stator assembly.

[0020] Figure 3 It is Figure 2 side view.

[0021] Figure 4 It is the sectional view along the A-A of Figure 3

[0022] Figure 5 It is the structural explosion drawing of the stator assembly.

[0023] Figure 6 It is the structural schematic diagram of the front line frame.

[0024] Figure 7 It is Figure 6 side view of the front line frame.

[0025] Figure 8 It is Figure 6 front view of the front line frame.

[0026] Figure 9 It is the structural schematic diagram of the rear line frame.

[0027] Figure 10 It is Figure 9 front view of the rear line frame.

[0028] Figure 11 It is Figure 9 top view of the rear line frame.

[0029] The figure mark shows as:

[0030] ​1-front support assembly, 2-rear support assembly, 3-stator assembly, 31-stator chip, 311-first mounting hole, 312-second mounting hole, 32-stator enameled wire, 321-lead wire, 4-rotor assembly, 5-fan blade, 6-front wire rack, 61-first wire cavity, 62-first notch, 63-first arc-shaped plate, 64-first pressing block, 65-first base, 66-first limiting groove, 67-first mounting column, 7-rear wire rack, 71-second wire cavity, 72-second notch, 73-second arc-shaped plate, 74-second pressing block, 75-second base, 76-second limiting groove, 77-limiting block, 78-elongated inclined part, 79-limiting column, 791-limiting hole, 70-second mounting column, 8-rubber tie. DETAILED DESCRIPTION

[0031] To deepen the understanding of the utility model, the utility model will be further described in the following with examples and drawings. The utility model can be implemented in the following ways:

[0032] Reference Figures 1-11 A series excited motor with a new wire rack, comprising a front support assembly 1, a rear support assembly 2, a stator assembly 3, a rotor assembly 4 and a fan blade 5; the rotor assembly 4 is installed in the stator assembly 3, and the front support assembly and the rear support assembly 2 are respectively arranged at the front and rear ends of the stator assembly 3. Among them, the stator assembly 3 comprises a stator chip 31 and two groups of stator enameled wires 32 embedded in the stator chip 31, the stator chip 31 is provided with a front wire rack 6 and a rear wire rack 7 at the corresponding positions of the end portions of the stator enameled wires 32 respectively, the front wire rack 6 is close to the front support assembly, and the rear wire rack 7 is close to the rear support assembly 2. The utility model mainly fixes the two end portions of the stator enameled wires 32 by the front wire rack 6 and the rear wire rack 7 respectively, so as to ensure that the end portions of the stator enameled wires 32 are neat, not loose or short-circuited.

[0033] Specifically, the front wire rack 6 and the rear wire rack 7 are respectively provided with a first wire cavity 61 and a second wire cavity 71 for embedding the end portions of the stator enameled wires 32, the first wire cavity 61 and the second wire cavity 71 are in the shape of "C", can form a half-wrapped state to the end portions of the stator enameled wires 32, and can prevent the stator enameled wires 32 from being touched to the rotor assembly 4 due to looseness. The front wire rack 6 and the rear wire rack 7 are respectively provided with a first notch 62 and a second notch 72 for the rubber tie 8 to pass through, which prevents the rubber tie 8 from shifting during the tightening process and ensures the quality of fixing the end portions of the stator enameled wires 32.

[0034] Further, referring to Figures 6-8The front wire holder 6 comprises a first arc-shaped plate 63, the center of which is directed towards the rotor assembly 4. The upper and lower ends of the first arc-shaped plate 63 respectively extend outwardly on the side of the arc-shaped convexity of the first arc-shaped plate 63 to form a first pressing block 64 and a first base 65, and the first pressing block 64, the first arc-shaped plate 63 and the first base 65 are sequentially connected to form a first wire cavity 61 in the shape of "C". The middle part of the first base 65 is recessed inwardly towards the first pressing block 64 to form a first notch 62. During assembly, the adhesive tape 8 is inserted from the first notch 62 and then is pulled out from the top of the first pressing block 64 and is tightened, so that the end of the stator enameled wire 32 is tightly fixed in the first wire cavity 61. The operation is simple and convenient, and the adhesive tape is not wound.

[0035] Further, the front wire holder 6 is provided with a first limiting groove 66 for guiding the adhesive tape 8, the first limiting groove 66 extends from the top free end of the first pressing block 64 to the first notch 62 through the inner side of the first arc-shaped plate 63. After the adhesive tape 8 is inserted from the first notch 62, the adhesive tape 8 is pulled out from the top of the first pressing block 64 along the first limiting groove 66, so that the adhesive tape 8 is further limited, and the fixing quality of the end of the stator enameled wire 32 is further improved.

[0036] In addition, in order to install the front wire holder 6 on the end of the stator core 31, the bottom of the first base 65 outwardly extends a first mounting column 67 on both sides of the first notch 62 for clamping on the end of the stator core 31, and the stator core 31 is provided with a first mounting hole 311 for inserting the first mounting column 67 at the clamping position of the front wire holder 6. During assembly, the first mounting column 67 of the front wire holder 6 is inserted into the first mounting hole 311 of the stator core 31, and the bottom of the first base 65 abuts against the end surface of the stator core 31.

[0037] In the embodiment, the rear wire holder 7 has a structure similar to that of the front wire holder 6. Figures 9-11 The rear wire holder 7 comprises a second arc-shaped plate 73, the upper and lower ends of the second arc-shaped plate 73 respectively extend outwardly on the side of the arc-shaped convexity of the second arc-shaped plate 73 to form a second pressing block 74 and a second base 75, and the second pressing block 74, the second arc-shaped plate 73 and the second base 75 are sequentially connected to form a second wire cavity 71 in the shape of "C". The middle part of the second base 75 is recessed inwardly towards the second pressing block 74 to form a second notch 72. The rear wire holder 7 is provided with a second limiting groove 76 for guiding the adhesive tape 8, the second limiting groove 76 extends from the top free end of the second pressing block 74 to the second notch 72 through the inner side of the second arc-shaped plate 73. After the adhesive tape 8 is inserted from the second notch 72, the adhesive tape 8 is pulled out from the top of the second pressing block 74 along the second limiting groove 76. The design purpose of the second notch 72 and the second limiting groove 76 is to limit the adhesive tape 8, and the fixing quality of the end of the stator enameled wire 32 is improved.

[0038] In order to be able to fix the lead wire 321 of the stator enameled wire 32 at the same time, the free end of the second pressing block 74 is upwardly protruded with a limiting block 77 for clamping the lead wire 321 of the stator enameled wire 32 on both sides of the second limiting slot 76. The height of the limiting block 77 is adapted to the diameter of the lead wire 321, so that it can clamp the lead wire 321. When assembling, the lead wire 321 is pressed on the top of the second pressing block 74 while the cable tie 8 is passed through the second pressing block 74, and then the cable tie 8 is tightened. The two free ends of the second base 75 outwardly extend with an extended inclined portion 78 which is close to the second arc-shaped plate 73. The extended inclined portion 78 can limit both sides of the end of the stator enameled wire 32. The free end of the extended inclined portion 78 protrudes towards the second pressing block 74 with a limiting column 79. The limiting column 79 is provided with a limiting hole 791 for inserting the connection of the stator enameled wire 32 and the lead wire 321. The design of the limiting column 79 can not only prevent the stator enameled wire from being separated from the second wire cavity 71, but also limit the connection of the lead wire 321 and the stator enameled wire 32 in the limiting hole 791, so that the line fixing of the motor looks more neat and beautiful.

[0039] In addition, in order to install the rear wire holder 7 on the end of the stator core 31, the bottom of the second base 75 outwardly protrudes with a second mounting column 70 for clamping on the end of the stator core 31 on both sides of the second gap 72, and the stator core 31 is provided with a second mounting hole 312 for inserting the second mounting column 70 at the clamping position of the rear wire holder 7. When assembling, the second mounting column 70 of the rear wire holder 7 is inserted into the second mounting hole 312 of the stator core 31 in alignment, until the bottom of the second base 75 abuts to the end surface of the stator core 31.

[0040] The stator enameled wire fixing method: selecting the stator enameled wire 32 according to the specification, then embedding the wound stator enameled wire 32 into the slot of the stator core 31, inserting the front wire holder 6 and the rear wire holder 7 into both ends of the stator core 31 so that the first wire cavity 61 and the second wire cavity 71 are outwardly; then embedding both ends of the stator enameled wire 32 into the first wire cavity 61 and the second wire cavity 71 respectively, passing the cable tie 8 from the first gap 62, then passing out from the top of the first pressing block 64 along the first limiting slot 66, then tightening; then passing the cable tie 8 from the second gap 72, then passing out from the top of the second pressing block 74 along the second limiting slot 76, while pressing the lead wire 321 on the top of the second pressing block 74, then tightening the cable tie 8. The operation is simple and fast, and it can ensure that the stator enameled wire 32 will not be loose, and the cable tie 8 will not be displaced.

[0041] Finally, it should be noted that: the above only describes the preferred embodiments of the present application, and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A new type of wire holder for a series excited motor, comprising a front support assembly (1), a rear support assembly (2), a stator assembly (3), a rotor assembly (4) and a fan blade (5); the rotor assembly (4) is installed in the stator assembly (3), and the front support assembly (1) and the rear support assembly (2) are respectively arranged at the front and rear ends of the stator assembly (3); characterized in that the stator assembly (3) comprises a stator chip (31) and two groups of stator enameled wires (32) embedded in the stator chip (31), the stator chip (31) is provided with a front wire holder (6) and a rear wire holder (7) at the corresponding positions of the end portions of the stator enameled wires (32) at both ends respectively, the front wire holder (6) is close to the front support assembly (1), and the rear wire holder (7) is close to the rear support assembly (2); the front wire holder (6) and the rear wire holder (7) are respectively provided with a first wire cavity (61) and a second wire cavity (71) for embedding the end portions of the stator enameled wires (32), the first wire cavity (61) and the second wire cavity (71) are in the shape of "C", and the front wire holder (6) and the rear wire holder (7) are respectively provided with a first gap (62) and a second gap (72) for the passing of a rubber band (8). The front wire holder (6) comprises a first arc-shaped plate (63), the upper and lower ends of the first arc-shaped plate (63) are respectively outwardly protruded with a first pressing block (64) and a first base (65) on the side of the arc-shaped protrusion, and the middle part of the first base (65) is inwardly recessed to form the first gap (62) towards the first pressing block (64).

2. A dynamo electric machine with a new type of coil former according to claim 1, characterized in that, The front wire holder (6) is provided with a first limiting groove (66) for guiding the rubber band (8), and the first limiting groove (66) extends from the top free end of the first pressing block (64) to the first gap (62) through the inner side of the first arc-shaped plate (63).

3. A dynamo electric machine with a new type of coil former according to claim 2, characterized in that, The bottom of the first base (65) is outwardly protruded with a first mounting column (67) for clamping the end portion of the stator chip (31) on both sides of the first gap (62), and the stator chip (31) is provided with a first mounting hole (311) for inserting the first mounting column (67) at the clamping position of the front wire holder (6).

4. A dynamo electric machine with a new type of coil former according to claim 3, characterized in that, The rear wire holder (7) comprises a second arc-shaped plate (73), the upper and lower ends of the second arc-shaped plate (73) are respectively outwardly protruded with a second pressing block (74) and a second base (75) on the side of the arc-shaped protrusion, and the middle part of the second base (75) is inwardly recessed to form the second gap (72) towards the second pressing block (74).

5. A dynamo electric machine with a new type of coil former according to any one of claims 1-4, characterized in that, The rear wire holder (7) is provided with a second limiting groove (76) for guiding the rubber band (8), and the second limiting groove (76) extends from the top free end of the second pressing block (74) to the second gap (72) through the inner side of the second arc-shaped plate (73).

6. A dynamo electric machine with a new type of coil former according to claim 5, characterized in that, The free end of the second pressing block (74) is upwardly protruded with a limiting block (77) for clamping the lead wire (321) of the stator enameled wire (32) on both sides of the second limiting groove (76).

7. A dynamo electric machine with a new type of coil former according to claim 6, characterized in that, The two free ends of the second base (75) are outwardly extended with an extended inclined part (78) close to the second arc-shaped plate (73).

8. A dynamo electric machine with a new type of coil former according to claim 7, characterized in that, ​ 9. A dynamo electric machine with a new type of armature according to claim 8, characterized in that, The free end of the elongated inclined part (78) protrudes a limiting column (79) towards the second pressing block (74), and the limiting column (79) is provided with a limiting hole (791) for inserting the connection part of the stator enameled wire (32) and the lead wire (321).

10. A dynamo electric machine with a new type of coil former according to claim 6 or 7 or 8 or 9, characterized in that, The bottom of the second base (75) protrudes a second mounting column (70) for clamping the end of the stator core (31) outward on both sides of the second gap (72), and the stator core (31) is provided with a second mounting hole (312) for inserting the second mounting column (70) at the clamping part of the rear lead frame (7).

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