Armature binding ring and starter

Abstract

The utility model discloses an armature binding ring and a starter, and belongs to the starter technical field, the armature binding ring comprises a body, the inner wall of the body is provided with a plurality of radially recessed paint storage grooves, and chamfer inclined planes are formed between the inner wall of the body and the front and rear end faces; the starter comprises an electromagnetic switch, an armature assembly and a transmission mechanism, the armature assembly comprises an armature shaft and an armature wire, the armature assembly further comprises the armature binding rings, and the armature wire is fixed to the two ends of an iron core lamination through the two armature binding rings. By designing the chamfers at the two ends of the armature binding ring to replace the conical design of the inner wall of the binding ring in the prior art, the installation guide problem is solved, the binding ring does not need punch forming during production, so that the wall thickness of the binding ring can be increased, and insulating paint on the surface of the binding ring is synchronously machined during turning of iron core laminations; therefore, the insulating paint remaining on the surface of the binding ring is prevented from flying into the motor after high-speed rotation, the process is simple, and meanwhile, the fixing strength between the binding ring and an inner side structure can be improved by the structure.

Description

Technical Field

[0001] The utility model belongs to the technical field of starters, and particularly relates to an armature binding ring and a starter. Background Art

[0002] During the starting process of the starter, current flows into the motor. The armature assembly 100 rotates to output power, which is transmitted to the engine flywheel ring gear to start the engine. The armature assembly 100 mainly includes the following parts: armature shaft 101, armature wire 102, core laminations 106, front binding ring 107, rear binding ring 108, front bearing 110, rear bearing 111, commutator 105, etc. The installation sequence is to press the front insulating plate 103, core laminations 106, and rear insulating plate 104 onto the armature shaft 101, twist the armature wire 102 and install it into the armature slot, twist the rear end of the armature wire 102 and press it into the commutator 105, weld the copper wire to the commutator 105, wind the insulating endless tape 109 at the installation positions of the front and rear binding rings 107, 108 and fit the front and rear binding rings 107, 108, and after impregnating with paint, finish machining the outer circle of the core laminations 106 and the surface of the commutator 105.

[0003] The armature assembly 100 rotates at a high speed. Therefore, the front and rear binding rings 107, 108 are used to fix the armature wire 102 to prevent displacement due to the centrifugal force generated by the high-speed rotation of the armature assembly 100. In the prior art, there are two design schemes for the front and rear binding rings 107, 108. One is that the binding ring is made of non-metallic material, such as epoxy material. When the starter starts, the armature will generate high temperature. When the starter does not cut off the power after the engine starts and the armature rotates at a high speed, this material is prone to delamination and flying at high temperature. Another scheme is to use metal binding rings 107, 108. This material has the characteristic of high temperature resistance compared with the resin ring. For the convenience of installation, the inside is generally designed to be conical by stamping. For the convenience of stamping, the binding rings 107, 108 are generally thin-walled steel rings or iron rings. However, because the wall thickness is relatively thin, the installation will be slightly deformed and in a slightly elliptical shape, and it is easy to have under-processing, resulting in the inability to remove the insulating paint on the surface of the binding rings 107, 108 by machining after impregnating with paint. After the insulating paint is not removed, it will peel off at high temperature and high speed and fall into the motor, causing partial early failure of the motor. Usually, the adopted scheme is to wind tape on the surfaces of the front and rear binding rings 107, 108 before impregnating the armature with paint and tear it off after impregnating with paint, which will cause complex process, long working hours, and high cost. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide an armature binding ring and a starter, which can improve the fixing strength of the armature binding ring, avoid axial displacement, the armature binding ring itself has the function of installation guidance, and can increase the wall thickness to realize the removal of the surface insulating paint by machining, thereby reducing the processing procedures and the cost.

[0005] To solve the above technical problems, the technical solution of the present utility model is as follows:

[0006] An armature binding ring, comprising a body, wherein a plurality of radially recessed paint storage grooves are provided on the inner wall of the body, and a chamfered inclined surface is formed between the inner wall of the body and the end faces on the front and rear sides.

[0007] Further, the body is an alloy body.

[0008] Further, the body is an aluminum alloy body.

[0009] Further, the body includes a metal outer ring and an insulating inner ring connected as a whole, and the metal outer ring is sleeved outside the insulating inner ring.

[0010] Further, the paint storage grooves are provided on the inner wall of the insulating inner ring, and the chamfered inclined surface is formed between the inner wall of the insulating inner ring and the end faces on the front and rear sides.

[0011] Further, a plurality of radially recessed reinforcing grooves are provided on the inner wall of the metal outer ring, and the insulating inner ring is injection-molded on the inner wall of the metal outer ring.

[0012] Further, the metal outer ring is an aluminum alloy ring body, and the insulating inner ring is a bakelite powder ring body.

[0013] A starter, comprising an electromagnetic switch, an armature assembly and a transmission mechanism, wherein the armature assembly includes an armature shaft, a core lamination and armature wires, and the armature assembly further includes the above-mentioned armature binding ring, and the armature wires are fixed to both ends of the core lamination through the two armature binding rings.

[0014] After adopting the above technical solution, the beneficial effects of the present utility model are as follows:

[0015] Since the armature binding ring of the present utility model includes a body, a plurality of radially recessed paint storage grooves are provided on the inner wall of the body, and a chamfered inclined surface is formed between the inner wall of the body and the end faces on the front and rear sides. The chamfered inclined surface can reduce the interference with the inner structure during installation, has the function of installation guidance, is convenient for installation, and does not require stamping during production. Therefore, the wall thickness can be increased, so that the insulating paint on the surface of the binding ring can be processed synchronously when turning the core lamination, reducing the processing procedures and costs. At the same time, after installation, a chamfered groove is formed between the chamfered inclined surface and the inner structure. After impregnating with paint, both the chamfered groove and the paint storage groove can store paint, playing a certain bonding role, thereby increasing the fixing strength between the armature binding ring and the inner structure.

[0016] The starter of the present utility model includes an electromagnetic switch, an armature assembly, and a transmission mechanism. The armature assembly includes an armature shaft, a core lamination, and armature wires. The armature assembly further includes the above-mentioned armature binding rings. The armature wires are fixed to both ends of the core lamination through two armature binding rings. The armature binding rings are convenient to install, and the surface insulating paint can be removed by surface machining, preventing the insulating paint remaining on the surface of the binding rings from flying into the motor interior after high-speed rotation, causing adverse effects. The process is simple, the cost is low, and the fixing strength is high.

[0017] In summary, the armature binding ring and the starter of the present utility model solve the technical problems of complex processes and high costs in the prior art caused by removing the surface insulating paint of the armature binding ring. The armature binding ring of the present application has the function of installation guidance and does not require stamping processing. Therefore, the wall thickness of the binding ring can be increased, enabling the synchronous machining of the insulating paint on the surface of the binding ring when machining the core lamination by turning, preventing the insulating paint remaining on the surface of the binding ring from flying into the motor interior after high-speed rotation, causing adverse effects, thus saving the excessive cost caused by the complex process of winding tape before dipping paint and removing the tape after dipping paint in the prior art. At the same time, this structure can also increase the fixing strength between the armature binding ring and the inner structure. Description of the Drawings

[0018] Figure 1 is a schematic structural diagram of an armature assembly in the prior art;

[0019] Figure 2 is a schematic structural diagram of the first embodiment of the armature binding ring of the present utility model;

[0020] Figure 3 is a schematic structural diagram of the second embodiment of the armature binding ring of the present utility model;

[0021] Figure 4 is a schematic structural diagram of the first embodiment of the starter of the present utility model;

[0022] Figure 5 is a schematic structural diagram of the second embodiment of the starter of the present utility model;

[0023] In the figure, 100 - armature assembly, 101 - armature shaft, 102 - armature wire, 103 - front insulating plate, 104 - rear insulating plate, 105 - commutator, 106 - core lamination, 107 - front binding ring, 108 - rear binding ring, 109 - tailless tape, 110 - front bearing, 111 - rear bearing, 200 - armature binding ring, 201 - body, 202 - chamfered inclined surface, 203 - paint storage groove, 210 - metal outer ring, 211 - reinforcement groove, 212 - insulating inner ring, 300 - electromagnetic switch, 400 - transmission mechanism. Detailed Embodiments

[0024] The present utility model will be further described below in conjunction with the accompanying drawings and embodiments. The preferred embodiments of the present utility model are shown in the drawings. The function of the drawings is to supplement the description in the text part of the specification, enabling people to intuitively and vividly understand each technical feature and the overall technical solution of the present utility model. However, it should not be construed as a limitation on the protection scope of the present utility model.

[0025] Embodiment 1:

[0026] As Figure 2 shown, an armature binding ring includes a body 201, and a plurality of radially recessed paint storage grooves 203 are provided on the inner wall of the body 201. During the processing, the tail-free tape 109 is wound first before dipping in paint, and then the armature binding ring 200 is sleeved in place. When dipping in paint, the paint will penetrate into the paint storage grooves 203. The paint in the paint storage grooves 203 can play a certain bonding role, increasing the fixing strength between the armature binding ring 200 and the inner structure, and thus better playing the role of radially restraining the armature wire and preventing axial displacement, effectively solving the problem that the armature binding ring 200 is prone to displacement under high-speed working conditions.

[0027] As Figure 2 shown, a chamfered inclined surface 202 is formed between the inner wall of the body 201 and the end faces on the front and rear sides. The chamfered inclined surface 202 can reduce the interference with the inner structure during installation and has the function of installation guidance. Since the armature binding ring no longer needs to be stamped, the wall thickness can be increased to remove the surface insulating paint by surface machining, thereby reducing the processing procedures and costs. At the same time, after the armature binding ring 200 is installed on the armature assembly 100, a chamfered groove is formed between the chamfered inclined surface 202 and the inner structure. The chamfered groove can store paint during dipping in paint, playing a certain bonding role, thereby increasing the fixing strength between the armature binding ring 200 and the inner structure.

[0028] Preferably, the body 201 is an alloy body 201, and more preferably an aluminum alloy body. The aluminum alloy body has high strength and low hardness, which is convenient for removing the surface insulating paint by surface machining.

[0029] Embodiment 2:

[0030] The difference between this embodiment and Embodiment 1 is as follows:

[0031] As Figure 3 shown, the body 201 includes a metal outer ring 210 and an insulating inner ring 212 connected as a whole. The metal outer ring 210 is sleeved on the outside of the insulating inner ring 212. The chamfered inclined surface 202 is provided between the inner wall of the insulating inner ring 212 and the end faces on the front and rear sides, and the paint storage grooves 203 are provided on the inner wall of the insulating inner ring 212.

[0032] The insulating inner ring 212 functions as insulation between the metal outer ring 210 and the armature wire. Before impregnation, the armature binding ring 200 can be directly sleeved outside the armature wire without winding the tailless tape 109, saving the process of winding the tailless tape, reducing the processing procedures, and lowering the cost.

[0033] Preferably, several radially concave reinforcing grooves 211 are provided on the inner wall of the metal outer ring 210, and the insulating inner ring 212 is injection-molded on the inner wall of the metal outer ring 210. When the insulating inner ring 212 is injection-molded, it will fill into the reinforcing grooves 211. Therefore, the contact area between the metal outer ring 210 and the insulating inner ring 212 can be increased, thereby effectively increasing the adhesion between the insulating inner ring 212 and the metal outer ring 210, ensuring that the insulating inner ring 212 and the metal outer ring 210 do not separate during actual use. Specifically, the metal outer ring 210 is an aluminum alloy ring body, and the insulating inner ring 212 is a bakelite powder ring body, which has good insulation performance.

[0034] Embodiment 3:

[0035] As Figure 4 and Figure 5 collectively shown, a starter includes an electromagnetic switch 300, an armature assembly 100, and a transmission mechanism 400. The armature assembly 100 includes an armature shaft 101, core laminations 106, and armature wire 102. The armature assembly 100 further includes the armature binding ring 200 of Embodiment 1 or Embodiment 2, and the armature wire 102 is fixed to both ends of the core laminations 106 through two armature binding rings 200.

[0036] When the armature binding ring 200 has the structure in Embodiment 1, before impregnation, first use the tailless tape to wind the armature wire 102 around the core laminations 106, and then sleeve the armature binding ring 200. When the armature binding ring 200 has the structure in Embodiment 2, before impregnation, directly sleeve the armature binding ring 200 outside the core laminations 106 and the armature wire 102.

[0037] After impregnation, when performing finish machining on the outer circle of the core laminations 106 and the surface of the commutator, the surface of the armature binding ring 200 can be machined simultaneously to remove the surface insulating paint. The process is simple and the cost is low.

[0038] For the armature binding ring and the starter of the present utility model, by forming a chamfered slope between the inner wall of the body and the end faces on the front and back sides, the armature binding ring can reduce the interference with the inner structure during installation, is convenient for installation, and can have sufficient wall thickness to synchronously machine the insulating paint on the surface of the binding ring when machining the core laminations by turning, reducing the processing procedures and lowering the cost. At the same time, the chamfered slope is convenient for installation. Meanwhile, the paint storage groove provided on the inner wall of the body and the chamfered groove formed by the chamfered slope and the inner structure can store paint during impregnation, thereby increasing the fixing strength between the armature binding ring and the inner structure.

[0039] In the description of this specification, the description of terms such as "several" means one or more. The meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0040] In the description of this specification, unless otherwise clearly defined, terms such as "set", "installed", "connected", etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in combination with the specific content of the technical solution.

[0041] Although the specific implementation manners of the present utility model have been described above, those skilled in the art should understand that the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. These are only examples, and the protection scope of the present utility model is defined by the claims. Without departing from the principle and essence of the present utility model, those skilled in the art can make various changes or modifications to these implementation manners without any creative labor, but these changes and modifications all fall within the protection scope of the present utility model.

Claims

1. An armature binding ring, characterized in that, It includes a body (201), and a plurality of radially recessed paint storage grooves (203) are provided on the inner wall of the body (201). A chamfered inclined surface (202) is formed between the inner wall of the body (201) and the end faces on the front and rear sides.

2. The armature lashing ring according to claim 1, characterized in that, The body (201) is an alloy body.

3. The armature lashing ring according to claim 2, characterized in that, The body (201) is an aluminum alloy body.

4. The armature lashing ring according to claim 1, wherein The body (201) includes a metal outer ring (210) and an insulating inner ring (212) connected as a whole. The metal outer ring (210) is sleeved outside the insulating inner ring (212).

5. The armature lashing ring according to claim 4, wherein, The paint storage grooves (203) are provided on the inner wall of the insulating inner ring (212). The chamfered inclined surface (202) is formed between the inner wall of the insulating inner ring (212) and the end faces on the front and rear sides.

6. The armature binding ring according to claim 4, characterized in that A plurality of radially recessed reinforcing grooves (211) are provided on the inner wall of the metal outer ring (210). The insulating inner ring (212) is injection-molded on the inner wall of the metal outer ring (210).

7. The armature lashing ring according to claim 4, wherein The metal outer ring (210) is an aluminum alloy ring body, and the insulating inner ring (212) is a bakelite powder ring body.

8. A starter, comprising an electromagnetic switch (300), an armature assembly (100) and a transmission mechanism (400), wherein the armature assembly (100) includes an armature shaft (101), a core lamination (106) and an armature wire (102), characterized in that, The armature assembly (100) further includes the armature binding ring (200) according to any one of claims 1 to 7. The armature wire (102) is fixed to both ends of the core lamination (106) through two armature binding rings (200).

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