High-rotating-speed automobile starter rotor

Abstract

The utility model discloses a high rotation speed automobile starter rotor, comprising an iron core and a copper wire winding, the iron core is formed by stacking a plurality of silicon steel sheets, the outer wall of each silicon steel sheet is provided with grooves which are circumferentially and uniformly distributed, copper wires of the copper wire winding pass through the grooves, and the grooves are arranged along the radial direction of the silicon steel sheets. Two punching grooves are punched on the edge of the rotor between the grooves, each punching groove forms an extrusion side after being punched, the extrusion side is inclined to the inside of an adjacent groove opening, and the end parts of the extrusion sides on the two sides of the groove opening are close to each other or block the groove opening, so that the groove opening is blocked, and a copper wire is limited in the iron core groove. In the starting process of the high-rotating-speed automobile starter, the copper wire winding cannot be separated from the rotor, so that the rotor of the high-rotating-speed automobile starter runs more stably and reliably.

Description

Technical Field

[0001] The utility model relates to a component on an automobile starter, in particular to a high-speed automobile starter rotor. Background Art

[0002] The rotor structure of the starter includes an iron core and a copper wire winding. The copper wire winding is mainly composed of copper wire. The copper wire passes through grooves evenly distributed on the circumference of the iron core wall. These grooves are set along the radial direction of the rotor. The copper wire on the copper wire winding passes through the grooves. These copper wires are wound in the grooves by a machine, and the machine sometimes makes the copper wire loose. When the rotor of a high-speed automobile starter rotates at high speed, the copper wire in the groove is thrown out of the groove by centrifugal force, which causes the copper wire to wear or even damage, causing damage to the motor and the starter cannot be used normally. Utility Model Content

[0003] In order to solve the above problems, the purpose of the utility model is to provide a high-speed automobile starter rotor that confines copper wires in the core grooves so that the copper wires will not be thrown out of the rotor during high-speed operation.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a high-speed automobile starter rotor, including an iron core and a copper wire winding, the iron core is formed by stacking a plurality of silicon steel sheets, and grooves uniformly distributed around the circumference are arranged on the outer wall of the silicon steel sheet, and the copper wire of the copper wire winding passes through the grooves, and the grooves are arranged along the radial direction of the silicon steel sheet, and two punched grooves are punched on the edge of the rotor between the grooves, and each punched groove forms an extruded side after punching, and the extruded side edge is inclined to the adjacent groove opening, and the ends of the extruded side edges on both sides of the groove opening are close to each other or block the groove opening.

[0005] When the two extruded side ends at the opening of the groove are close to each other, the distance between them is smaller than the diameter of the copper wire.

[0006] An insulating sheet is also arranged in the groove, and the insulating sheet wraps the copper wire.

[0007] The beneficial effects of the utility model are as follows: the extruded side ends on both sides of the groove opening are close to each other or block the groove opening, thereby blocking the groove opening and restricting the copper wire in the core groove. During the starting process of the high-speed automobile starter, the copper wire winding will not separate from the rotor, making the high-speed automobile starter rotor run more stably and reliably, and the structural design is ingenious and reliable.

[0008] The utility model is further described below in conjunction with the accompanying drawings and specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1Structural diagram of the specific embodiment of the present utility model;

[0010] Figure 2 Cross-sectional view of the specific embodiment of the present utility model;

[0011] Figure 3 is Figure 2 the enlarged view of A in Specific embodiment

[0012] The present utility model will be specifically described below through embodiments, which are only used to further illustrate the present utility model and cannot be construed as a limitation on the protection scope of the present utility model.

[0013] As Figure 1 — Figure 3 shown, this embodiment discloses a high-speed automotive starter rotor, including an iron core 1, a rotating shaft 3, and a copper wire winding 2. The copper wire winding 2 is wound around the iron core 1, and the rotating shaft 3 passes through the hollow of the iron core 1. The iron core 1 is formed by stacking a plurality of silicon steel sheets 4. On the outer wall of the silicon steel sheet 4, there are circumferentially evenly distributed grooves 5. The copper wire of the copper wire winding 2 passes through the groove 5. The groove 5 is arranged along the radial direction of the silicon steel sheet 4. On the rotor edge between the grooves 5, two "V"-shaped punching grooves 6 are punched. Each punching groove 6 forms a pressing side 7 after punching. The pressing side 7 inclines towards the opening of the adjacent groove 5. The ends of the pressing sides 7 on both sides of the opening of the groove 5 are close to each other or block the opening of the groove 5.

[0014] The rotor can be rotated through equipment positioning, and then the iron core is punched to form the punching groove 6 by a punching tool with a flat cutting head.

[0015] When the ends of the two pressing sides 7 at the opening of the groove 5 are close to each other, the distance between the ends of the two pressing sides 7 is less than the diameter of the copper wire. In this way, the copper wire can be prevented from being thrown out of the iron core 1 when the rotor rotates at a high speed.

[0016] An insulating sheet 8 is also arranged in the groove 5, and the insulating sheet 8 wraps the copper wire. The insulating sheet 8, the insulating sheet 8 wraps the copper wire. The placement of the insulating sheet 8 not only insulates the copper wire from the silicon steel sheet 4 but also compresses the space between the copper wire and the groove 5, making the positioning of the copper wire more reliable.

[0017] Adopting the above technical solution, the ends of the pressing sides 7 on both sides of the opening of the groove 5 are close to each other or block the opening of the groove 5, thereby blocking the opening of the groove 5 and restricting the copper wire in the rotor groove 5. During the starting process of the high-speed automotive starter, the copper wire winding 2 will not break away from the rotor, making the high-speed automotive starter rotor operate more stably and reliably.

[0018] The foregoing has shown and described the basic principles, main features and advantages of the present utility model. For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-mentioned exemplary embodiments, and without departing from the spirit or basic features of the present utility model, the present utility model can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present utility model. Any reference signs in the claims should not be construed as limiting the claims concerned.

[0019] In addition, it should be understood that although this specification is described in terms of embodiments, not every embodiment only contains an independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A high-speed automotive starter motor rotor, comprising an iron core and a copper wire winding. The iron core is formed by stacking a plurality of silicon steel sheets. Grooves are circumferentially and uniformly arranged on the outer wall of the silicon steel sheets, and the copper wire of the copper wire winding passes through the grooves. It is characterized in that: The groove is arranged along the radial direction of the silicon steel sheet. Two punching grooves are punched on the rotor edge between the grooves. After each punching groove is punched, an extrusion side edge is formed. The extrusion side edge inclines towards the inside of the adjacent groove opening. The ends of the extrusion side edges on both sides of the groove opening are close to each other or block the groove opening.

2. The high-speed automotive starter motor rotor according to claim 1, characterized in that: When the ends of the two extrusion side edges at the groove opening are close to each other, the distance between them is less than the diameter of the copper wire.

3. The high-speed automotive starter motor rotor according to claim 1, characterized in that: An insulating sheet is also arranged in the groove, and the insulating sheet wraps the copper wire.

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