CN215772716U - Excitation winding for direct current starter - Google Patents

Abstract

The utility model discloses an excitation winding for a direct current starter, which relates to the technical field of motors and comprises a stator coil group, a lead wire group, a lug plate, a wire protecting liner, an equalizing wire and an anode carbon brush; the stator coil group comprises two first stator coils and two second stator coils, the first stator coils and the second stator coils are arranged at intervals in a ring shape, and the four stator coils are arranged in parallel; the one end of four stator coils all connects the lead wire and constitutes, and the lead wire is constituteed and is connected the lug, protects the line lining and installs on the lead wire is constituteed, and the equalizer wire is connected to the other end of four stator coils, and anodal carbon brush is installed on the equalizer wire. In the utility model, the stator coils are connected with the voltage equalizing wires, so that the voltages applied to the stator coils are consistent, the circular current is eliminated, and the voltage equalizing wires facilitate the welding operation of the positive carbon brush. The stator coil group comprises two first stator coils and two second stator coils, and the four stator coils are arranged in parallel to form a four-pole magnetic field to generate magnetic flux.

Description

Excitation winding for direct current starter

Technical Field

The utility model relates to the technical field of automobile starters, in particular to an excitation winding for a direct-current starter.

Background

The starter is also called a motor, and converts electric energy into mechanical energy to drive the flywheel of the engine to rotate so as to start the engine.

The starter is divided into a direct current starter, a gasoline starter, a compressed air starter and the like according to the working principle. The direct current starters are mostly adopted in internal combustion engines, and are characterized by compact structure, simple operation and convenient maintenance. The DC starter consists of DC series motor, operating mechanism and clutch mechanism. It is specially used for starting engine, and needs strong torque, so that it can pass large current quantity, and can be up to several hundred amperes.

The direct current series motor is internally provided with a stator winding, and the stator winding refers to a winding arranged on a stator, namely a copper wire wound on the stator. A winding is a generic term for a phase or an entire electromagnetic circuit formed by a plurality of coils or coil groups. The motor can be divided into a centralized type and a distributed type according to the different winding shapes and embedding wiring modes of coils. The winding and embedding of the centralized winding are simple, but the efficiency is low, and the running performance is poor. Most of the stators of the existing alternating current motors are applied with distributed windings, and the motors are respectively designed to adopt different winding types and specifications according to different types and models and coil winding process conditions. The stator winding can be divided into two types, a salient type and an implicit type, according to the relation between the number of magnetic poles of the motor and the actual number of magnetic poles formed by the distribution of the winding.

In the prior art, chinese patent with application number CN202021981394.0 discloses a motor stator with an electric excitation structure, and relates to the technical field of starter components. The utility model comprises a stator winding, a stator core, a stator carbon brush, a wire protecting end frame and a wire connecting ring, wherein the stator winding is formed by connecting four groups of coils in parallel through the wire connecting ring, outgoing lines are welded on the wire connecting ring, the outgoing line heads of two groups of coils in the stator winding and the end parts of the other two groups of coils are fixed through the wire protecting end frame, and the outgoing line heads of the two groups of coils in the stator winding extend out of two gaps of the wire protecting end frame so as to be welded to the wire connecting ring; the end parts of the other two coils are fixed by the other two gaps of the wire protecting end frame to be connected with the stator carbon brush. The stator can effectively solve the problems of easy sweeping and short circuit of the stator in the prior art, and has wide application range and high economic value.

In the patent, the stator windings and the stator carbon brushes are connected in a conventional manner, so that voltages applied to the coils are inconsistent, and further, circulation current is generated, so that the starter generates heat, vibrates, generates noise until the starter is burnt out, and the service life of the starter is shortened.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects in the prior art, the utility model aims to provide an excitation winding for a direct current starter, wherein the stator coil is connected with an equalizing wire, so that the voltages applied to the stator coils are consistent, and the circulating current is eliminated.

In order to achieve the above purpose, the utility model adopts the technical scheme that:

an excitation winding for a direct current starter comprises a stator coil group, a lead wire group, a lug plate, a wire protecting liner, a voltage equalizing wire and a positive carbon brush;

the stator coil group comprises two first stator coils and two second stator coils, the first stator coils and the second stator coils are arranged at intervals in a ring shape, and the four stator coils are arranged in parallel; one ends of the four stator coils are connected with the lead wire assembly, the lead wire assembly is connected with the lug plate, the wire protecting lining is installed on the lead wire assembly, the other ends of the four stator coils are connected with the voltage equalizing wire, and the positive carbon brush is installed on the voltage equalizing wire.

Furthermore, the first stator coil and the second stator coil respectively comprise heat-shrinkable belts at two ends and a plurality of turns of flat copper wires between the heat-shrinkable belts, interlayer insulating paper is arranged between the turns of the flat copper wires, and the outer surfaces of the coils of the first stator coil and the second stator coil are wrapped with insulating varnishes.

Further, the lead wire is composed of an outgoing wire and a soft lead wire, the outgoing wire is connected with the soft lead wire, and the outgoing wire is of a major arc structure.

Furthermore, the voltage equalizing line is of a major arc structure, and an insulating conduit is sleeved outside the voltage equalizing line.

Further, the positive carbon brush comprises a carbon brush block, a sleeve and a brush clack, wherein one end of the sleeve is connected with the carbon brush block, and the other end of the sleeve is connected with the brush clack.

Further, the positive electrode carbon brush includes a left positive electrode carbon brush and a right positive electrode carbon brush.

The utility model has the beneficial effects that:

1. in the utility model, the stator coils are connected with the voltage equalizing wires, so that the voltages applied to the stator coils are consistent, the circular current is eliminated, and the voltage equalizing wires facilitate the welding operation of the positive carbon brush.

2. The stator coil group comprises two first stator coils and two second stator coils, the first stator coils and the second stator coils are arranged at intervals in a ring shape, and the four stator coils are arranged in parallel to form a four-pole magnetic field to generate magnetic flux.

Drawings

FIG. 1 is a perspective view of the present invention;

FIG. 2 is a side view of the present invention;

FIG. 3 is an expanded view of the present invention;

FIG. 4 is an electrical schematic of the present invention;

FIG. 5 is a schematic view of a first stator coil of the present invention;

FIG. 6 is a side view of a first stator coil of the present invention;

FIG. 7 is a schematic view of a lead wire composition of the present invention;

FIG. 8 is a schematic diagram of an equalizer of the present invention;

fig. 9 is a schematic view of a positive electrode carbon brush according to the present invention;

reference numerals:

1. a stator coil group; 11. a first stator coil; 12. a second stator coil; 13. a heat-shrinkable tape; 14. flat copper wire; 15. interlayer insulating paper; 16. insulating varnished cloth; 2. lead wire composition; 21. an outgoing line; 22. a soft lead; 3. a lug plate; 4. protecting the wire lining; 5. equalizing the line; 6. a positive electrode carbon brush; 61. a carbon brush block; 62. a sleeve; 63. brushing petals; 7. an insulated conduit.

Detailed Description

The conception, the specific structure and the technical effects of the present invention will be clearly and completely described below in conjunction with the embodiments and the accompanying drawings to fully understand the objects, the features and the effects of the present invention.

Example 1

An excitation winding for a direct current starter is shown in figures 1-4 and comprises a stator coil group 1, a lead wire group 2, a lug plate 3, a wire protecting liner 4, an equalizing wire 5 and a positive carbon brush 6.

The stator coil group 1 comprises two first stator coils 11 and two second stator coils 12, the first stator coils 11 and the second stator coils 12 are arranged at intervals in a ring shape, and the four stator coils are arranged in parallel; the one end of four stator coils all connects the lead wire and constitutes 2, and the lead wire is constituteed 2 and is connected lug 3, protects the line lining 4 and installs on the lead wire is constituteed 2, and the equalizer wire 5 is connected to the other end of four stator coils, and anodal carbon brush 6 is installed on equalizer wire 5.

In this embodiment, the stator coils are connected to the equalizer 5, whereby voltages applied to the respective stator coils are equalized to eliminate the circulating current. The four stator coils are arranged in parallel to form a four-pole magnetic field to generate magnetic flux.

Example 2

In this embodiment, a further improvement is made on the basis of embodiment 1, as shown in fig. 5 and 6, each of the first stator coil 11 and the second stator coil 12 includes a heat-shrinkable tape 13 at both ends and a plurality of turns of flat copper wires 14 between the heat-shrinkable tapes 13, an interlayer insulating paper 15 is disposed between the turns of the plurality of turns of the flat copper wires 14, and the outer surfaces of the coils of the first stator coil 11 and the second stator coil 12 are wrapped with insulating varnish 16.

In this embodiment, the first stator coil 11 and the second stator coil 12 are both formed by winding a high-temperature 180 ° bare flat copper wire 14 through a winding die, the difference between the two is that different outgoing positions and different winding directions are designed according to different positions and different directions of a generated magnetic field in a winding assembly, the number of winding turns of the coil is designed according to needs, and an interlayer insulating paper 15 is arranged between the turns and is wound together with the copper wire to play an interlayer insulating role.

The outer surface of the coil is wrapped with insulating varnished cloth 16 to insulate the coil from the magnetic pole and the casing. The coils are connected into four parallel windings by a lead wire assembly 2 in a welding mode, the specific connection mode is carried out according to a figure 3, and the direction of the generated magnetic field accords with an electrical principle figure 4.

Example 3

This embodiment is further improved on the basis of embodiment 2, as shown in fig. 7, the lead assembly 2 is formed by welding the lead wire 21 and the soft lead 22, and the lead wire 21 has a major arc structure. The lead wire assembly 2 is used for introducing direct current from a power supply to the excitation winding and also plays a role in connecting and fixing each coil.

Example 4

This embodiment is further improved on the basis of embodiment 3, as shown in fig. 8, the equalizing line 5 has a major arc structure, and the insulating conduit 7 is sleeved outside the equalizing line 5.

The length of each coil is different in the manufacturing process, which affects the resistance balance, and the voltage equalizing line 5 is arranged in the embodiment to play a role of equalizing the voltage so as to avoid affecting the equalizing degree of the magnetic fluxes of the magnetic poles. In addition, the equalizing line 5 facilitates the welding operation of the positive carbon brush, although the carbon brush can be directly welded on the wire outlet ends of the two coils, the welding is inconvenient, and the equalizing line 5 with the major arc structure facilitates the welding operation of the positive carbon brush in the embodiment; and finally, the equalizing line 5 also has the function of ensuring the whole winding to be stable and not easy to deform.

Example 5

In this embodiment, a further improvement is made on the basis of embodiment 4, as shown in fig. 1 and 9, the positive electrode carbon brush 6 includes a carbon brush block 61, a sleeve 62, and a brush segment 63, and one end of the sleeve 62 is connected to the carbon brush block 61 and the other end is connected to the brush segment 63. The positive electrode carbon brush 6 includes left and right positive electrode carbon brushes 6. The positive electrode carbon brush 6 functions to transfer the current of the stator coil group 1 to the armature coil of the armature commutator.

For a better understanding of the present invention, the following is a complete description of the working principle of the present invention:

the direct current starter is a device for driving other equipment to work under the action of electromagnetic force and outputting torque, and has a specific magnetic field and a specific direction current. The stator winding is a component for generating a magnetic field, so the stator winding is called an excitation winding, is electrified to generate current, then generates a magnetic field, and acts with the current in the armature coil to generate output torque. The flow direction of the current in the specific working process is as follows: the power supply, the lead wire composition, the stator coil group, the equalizing line, the positive carbon brush, the armature commutator, the negative carbon brush (on the brush frame assembly), the brush frame bottom plate and the rear cover are grounded.

The embodiments of the present invention have been described in detail, but the present invention is not limited to the embodiments, and those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention, and the equivalents or substitutions are included in the scope of the present invention defined by the claims.

Claims (6)

1. An excitation winding for a direct current starter is characterized in that: the device comprises a stator coil group (1), a lead wire group (2), a lug plate (3), a wire protecting lining (4), an equalizing wire (5) and an anode carbon brush (6);

the stator coil group (1) comprises two first stator coils (11) and two second stator coils (12), the first stator coils (11) and the second stator coils (12) are arranged at intervals in a ring shape, and the four stator coils are arranged in parallel; one ends of the four stator coils are connected with the lead wire assembly (2), the lead wire assembly (2) is connected with the lug plate (3), the wire protection lining (4) is installed on the lead wire assembly (2), the other ends of the four stator coils are connected with the equalizing line (5), and the anode carbon brush (6) is installed on the equalizing line (5).

2. The excitation winding for a dc starter according to claim 1, wherein: the first stator coil (11) and the second stator coil (12) respectively comprise heat-shrinkable belts (13) at two ends and a plurality of turns of flat copper wires (14) between the heat-shrinkable belts (13), interlayer insulating paper (15) is arranged between the turns of the flat copper wires (14), and insulating varnished cloth (16) is wrapped on the outer surfaces of the first stator coil (11) and the second stator coil (12).

3. The excitation winding for a dc starter according to claim 1, wherein: lead component (2) are including lead wire (21) and soft lead wire (22), lead wire (21) are connected soft lead wire (22), just lead wire (21) are the major arc structure.

4. The excitation winding for a dc starter according to claim 1, wherein: the equalizing line (5) is of a major arc structure, and an insulating conduit (7) is sleeved outside the equalizing line (5).

5. The excitation winding for a dc starter according to claim 1, wherein: the positive carbon brush (6) comprises a carbon brush block (61), a sleeve (62) and a brush clack (63), wherein one end of the sleeve (62) is connected with the carbon brush block (61), and the other end of the sleeve (62) is connected with the brush clack (63).

6. The excitation winding for a dc starter according to claim 1, wherein: the positive carbon brush (6) comprises a left positive carbon brush and a right positive carbon brush (6).

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