Direct current motor insulating sleeve and direct current motor

Abstract

The utility model provides a direct current motor insulating sleeve and a direct current motor, and belongs to the technical field of direct current motors. The problem that in the prior art, an insulating sleeve falls off, and the falling prevention cost is high is solved. The motor comprises a motor shell, a motor shaft, a rotor assembly, a stator component, an insulating sleeve and a commutator assembly, the motor shaft penetrates through the rotor assembly and is connected with the rotor assembly, the rotor assembly comprises a rotor winding and a plurality of rotor plates, the inner side end of the rotor winding is of a groove structure, and the insulating sleeve is of a T-shaped structure. The motor shaft is sleeved with the insulating sleeve, one end of the insulating sleeve extends into the groove structure and is attached to one side of the rotor plate, a plurality of containing grooves are formed in the end face of the insulating sleeve, a circle of installation groove is formed in the insulating sleeve, the commutator assembly comprises a plurality of commutator segments, a circle of installation ring is formed at the end of each commutator segment, and the installation rings are connected with the installation grooves. A fixing column is formed in the middle of the mounting ring and extends into the placing groove, one end of the insulating sleeve is fixedly connected with a sleeve backing ring, and the sleeve backing ring is arranged outside the commutator segments in a sleeving mode. The commutator has the advantages of stable connection between the insulating sleeve and the commutator segment and low cost.

Description

TECHNICAL FIELD

[0001] The utility model belongs to direct current motor technical field relates to a kind of direct current motor insulation sleeve and direct current motor. BACKGROUND

[0002] Direct current motor is a kind of rotary motor, which converts direct current electric energy into mechanical energy or converts mechanical energy into direct current electric energy. In the key components of direct current motor, the connection status of the insulation sleeve and the commutator segment has a significant impact on the overall performance of the motor.

[0003] On the one hand, in some existing direct current motors, the connection stability of the insulation sleeve and the commutator segment is insufficient. When the motor is running, the commutator segment will be subjected to a large centrifugal force under high-speed rotation, and will also be affected by electromagnetic force and mechanical vibration. If the connection process of the insulation sleeve and the commutator segment is not good, it is easy to cause the connection between the two to loosen. This not only causes the motor to have the risk of electric leakage, affects the electrical insulation performance, but also may cause displacement of the commutator segment, resulting in poor commutation, and thus reduces the efficiency of the motor and shortens the service life. On the other hand, the means to improve the connection stability of the insulation sleeve and the commutator segment often involves a significant increase in cost. In order to enhance the connection stability, a more complex and high-precision assembly process is used, which makes the production process longer and reduces the production efficiency, further increasing the cost. SUMMARY

[0004] The utility model aims at the above-mentioned problems existing in prior art, provides a kind of direct current motor insulation sleeve and direct current motor.

[0005] The utility model can be realized by the following technical scheme: a kind of direct current motor insulation sleeve and direct current motor, including motor shell, motor shaft, rotor assembly, stator component, insulation sleeve and commutator assembly, the motor shaft is arranged through rotor assembly and is connected with rotor assembly, the rotor assembly includes rotor winding and several rotor plates, the inside end of the rotor winding is formed as recess structure, the insulation sleeve is T type structure, the insulation sleeve is set on motor shaft and insulation sleeve one end enters recess structure and is attached with the one side of rotor plate, several placing grooves are set on the end face of the insulation sleeve, a circle of installation groove is set in the inside of the insulation sleeve, the commutator assembly includes several commutator segments, the end of the commutator segment is formed with a circle of installation ring, the installation ring is connected with installation groove, the installation ring is formed with fixed column in the middle, the fixed column enters the placing groove, one end of the insulation sleeve is fixedly connected with sleeve grommet, the sleeve grommet is set on the outside of commutator segment.

[0006] In the above-mentioned direct current motor insulation sleeve and direct current motor, gaps are formed between the commutator segments, and a buckle head is formed on the inside of the sleeve grommet, the buckle head extends into the gap.

[0007] The motor end cover is internally connected with a contact shaft, and a graphite block is fixed at the end of the contact shaft.

[0008] The stator component is fixedly connected with a compression spring between the stator components.

[0009] The rotor plate is fixedly connected with an insulating baffle at the end.

[0010] Compared with the prior art, the DC motor insulating sleeve and the DC motor have the following beneficial effects: through the structural arrangement of the insulating sleeve, the commutating sheet can be stably connected with the insulating sleeve, and a sleeve grommet is arranged on one side of the insulating sleeve, thereby further preventing the commutating sheet from falling off the insulating sleeve, and the insulating sleeve has a low production cost. BRIEF DESCRIPTION OF DRAWINGS

[0011] Fig. 1 is a schematic diagram of the internal explosion structure of the utility model;

[0012] Fig. 2 is a schematic diagram of the internal explosion structure of the utility model;

[0013] Fig. 3 is a schematic diagram of the insulating sleeve, the commutating sheet and the sleeve grommet structure.

[0014] In the figure: 1, motor housing; 11, motor end cover; 2, motor shaft; 3, rotor assembly; 31, rotor winding; 311, groove structure; 32, rotor plate; 4, stator component; 5, insulating sleeve; 51, placing groove; 52, mounting groove; 6, commutating sheet; 61, mounting ring; 62, fixed column; 63, gap; 7, sleeve grommet; 71, buckle head; 8, contact shaft; 81, graphite block; 9, compression spring; 10, insulating baffle. DETAILED DESCRIPTION

[0015] The following is a specific embodiment of the utility model and further describes the technical scheme of the utility model in combination with the drawings, but the utility model is not limited to these embodiments.

[0016] As Figs. 1-3As shown, this embodiment includes a motor housing 1, a motor shaft 2, a rotor assembly 3, a stator component 4, an insulating sleeve 5, and a commutator assembly. The motor shaft 2 passes through the rotor assembly 3 and is connected to it. The rotor assembly 3 includes three rotor windings 31 and several rotor plates 32. The rotor plates 32 are stacked and fixed. The rotor windings 31 are connected to the stacked rotor plates 32. The rotor windings 31 extend out of both ends of the rotor plates 32. A groove structure 311 is formed on the inner side of each rotor winding 31. The stator component 4 is installed on the outside of the rotor windings 31. There are two stator components 4. A compression spring 9 is fixedly connected between the stator components 4. A motor end cover 11 is sealed to one side of the motor housing 1. A contact shaft 8 is connected inside the motor end cover 11. A graphite block 81 is fixed to the end of the contact shaft 8. The graphite block 81 is in contact with the commutator segment 6.

[0017] like Figs. 2-3 As shown, the insulating sleeve 5 has a T-shaped structure. The insulating sleeve 5 is sleeved on the motor shaft 2, and one end of the insulating sleeve 5 with a smaller diameter extends into the groove structure 311 and is in contact with one side of the rotor plate 32. Three placement grooves 51 are opened on the end face of the insulating sleeve 5. A ring of mounting grooves 52 is opened inside the insulating sleeve 5. The commutator assembly includes three commutator segments 6. Each commutator segment 6 has a ring of mounting rings 61 at its end. A fixing post 62 extending outward is formed in the middle of each mounting ring 61. When the commutator segment 6 and the insulating sleeve 5 are installed and connected, the mounting rings 61 are connected to the mounting grooves 52, the fixing post 62 extends into the placement grooves 51 and the outside of the fixing post 62 extends out of the insulating sleeve 5. A sleeve washer ring 7 is fixedly connected to one end of the insulating sleeve 5.

[0018] To elaborate further, such as Figs. 2-3 As shown, the sleeve washer 7 is sleeved on the outside of the insulating sleeve 5, and a gap 63 is formed between every two commutator segments 6. A snap head 71 is formed inside the sleeve washer 7. When the sleeve washer 7, the insulating sleeve 5, and the commutator segments 6 are connected, the snap head 71 extends into the gap 63. The sleeve washer 7 further improves the connection stability between the insulating sleeve 5 and the commutator segments 6.

[0019] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0020] Although this document uses a variety of terms, the possibility of using other terms is not excluded. These terms are used merely for the convenience of describing and explaining the essence of this invention; interpreting them as any additional limitation would contradict the spirit of this invention.

Claims

1. A DC motor insulating sleeve (5) and a DC motor, comprising a motor housing (1), a motor shaft (2), a rotor assembly (3), a stator assembly (4), an insulating sleeve (5), and a commutator assembly, wherein the motor shaft (2) passes through the rotor assembly (3) and is connected to the rotor assembly (3), characterized in that: The rotor assembly (3) includes a rotor winding (31) and several rotor plates (32). The inner end of the rotor winding (31) is formed into a groove structure (311). The insulating sleeve (5) has a T-shaped structure. The insulating sleeve (5) is sleeved on the motor shaft (2) and one end of the insulating sleeve extends into the groove structure (311) and is in contact with one side of the rotor plate (32). Several placement grooves (51) are opened on the end face of the insulating sleeve (5). The insulating sleeve (5) has a cavity inside. There is a mounting groove (52). The commutator assembly includes several commutator segments (6). A mounting ring (61) is formed at the end of each commutator segment (6). The mounting ring (61) is connected to the mounting groove (52). A fixing post (62) is formed in the middle of the mounting ring (61). The fixing post (62) extends into the placement groove (51). A sleeve washer (7) is fixedly connected to one end of the insulating sleeve (5). The sleeve washer (7) is sleeved on the outside of the commutator segment (6).

2. The DC motor insulating sleeve (5) and DC motor according to claim 1, characterized in that: A gap (63) is formed between the commutator segments (6), and a snap head (71) is formed on the inner side of the sleeve washer (7), which extends into the gap (63).

3. The DC motor insulating sleeve (5) and DC motor according to claim 1, characterized in that: A motor end cover (11) is sealed to one side of the motor housing (1). A contact shaft (8) is connected inside the motor end cover (11). A graphite block (81) is fixed to the end of the contact shaft (8).

4. The DC motor insulating sleeve (5) and DC motor according to claim 1, characterized in that: A compression spring (9) is fixedly connected between the stator components (4).

5. The DC motor insulating sleeve (5) and DC motor according to claim 1, characterized in that: An insulating baffle (10) is fixedly connected to the end of the rotor plate (32).

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