Plastic package stator and plastic package motor

Abstract

The utility model relates to a plastic package stator and a plastic package motor. The plastic package motor solves the technical problem that an existing plastic package motor is unreasonable in design. The plastic package stator comprises a stator main body, wherein at least one end of the stator main body is provided with a lead end protruding out of the end face of the stator main body; the annular end cover is arranged on the stator main body and can seal the two ends of the stator main body, and the lead wire end penetrates out of the annular end cover; the number of the sheaths is at least two, the sheaths are circumferentially arranged on the end face of the same side of the annular end cover, the sheaths are axially arranged on the end face of the annular end cover in a protruding mode, the sheaths are provided with axially-arranged lead wire installation holes, and the ends, away from the lead wire installation holes, of the sheaths are provided with receding notches communicated with the lead wire installation holes. The plastic package stator solves the problem that the copper wire at the lead end is exposed due to vibration friction of the stator, prevents steam from entering to influence the internal insulativity at the same time, and increases the variability of the connection direction of the lead end through the abdicating gap.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of plastic package stator, relates to a plastic package stator and plastic package motor. BACKGROUND

[0002] For example, Chinese patent document discloses a kind of plastic package stator and plastic package motor [201320627542.2], the plastic package stator has stator core and coil winding wound on stator core, stator core and coil winding are wrapped with plastic package layer, the peripheral wall of plastic package layer is equipped with outgoing line protection sleeve, temperature sensor is clamped between plastic package layer and outgoing line protection sleeve, wherein, a first recess is arranged on the peripheral wall of plastic package layer, at least a part of temperature sensor is installed in the first recess.The plastic package motor has the plastic package stator described above and the rotor installed in the plastic package stator.

[0003] The defect of the above technical scheme is that: since the sheath cannot be combined with the stator to form a whole, the stator and the sheath can be separated before the stator is installed into the shell, so that, first, there is a certain risk for the protective enameled wire, second, since the stator of the vibration rod is subjected to strong vibration together with the vibration rod, friction may occur between the sheath and the enameled wire to expose the copper wire and cause turn-to-turn short circuit phenomenon, third, if water vapor is generated during use, it will also penetrate from the joint between the sheath and the stator to affect the insulation of the enameled wire. UTILITY MODEL CONTENTS

[0004] The utility model aims at the above problems existing in prior art, and provides a kind of plastic package stator and plastic package motor.

[0005] The purpose of the utility model can be realized by the following technical solutions:

[0006] The plastic package stator comprises:

[0007] The stator body is provided with at least one lead end protruding from the end face of the stator body;

[0008] The annular end cover is arranged on the stator body and can close both ends of the stator body, and the lead end passes out from the annular end cover;

[0009] The sheath has at least two and is circumferentially arranged on the same side end face of the annular end cover, the sheath is axially protrudingly arranged on the end face of the annular end cover, the sheath is provided with a lead installation hole arranged in the axial direction, and the end of the sheath away from the lead installation hole is provided with a gap notch in communication with the lead installation hole.

[0010] Further, the circumferential edge of the sheath is located inside the circumferential edge of the annular end cover.

[0011] Further, the opening direction of the let-out notch is located at the radial inner side of the sheath.

[0012] Further, the annular end cover has two and is spaced apart at both ends of the stator body, the outer wall of the annular end cover is flush with the outer wall of the stator body.

[0013] Further, the two ends of the stator body are provided with annular steps, and the annular end cover is provided with an annular protrusion and is sleeved on the circumferential outer wall of the annular step.

[0014] Further, the annular end cover comprises a cylindrical portion sleeved on the circumferential outer wall of the stator body, and the two ends of the cylindrical portion are provided with end cover portions connected to the end portions of the stator body.

[0015] Further, the inner diameter of the annular end cover is smaller than the inner diameter of the stator body.

[0016] Further, one side of the annular end cover is spaced apart from the sheath, and the end of the annular end cover away from the sheath is provided with a recessed mounting groove.

[0017] Further, both sides of the annular end cover are provided with sheaths.

[0018] The utility model also provides a plastic package motor has as described plastic package stator.

[0019] Compared with the prior art, the plastic package stator solves the problem of exposed copper wire of lead end caused by stator vibration through the integral annular end cover and sheath, increases the sealing between the sheath and the annular end cover, avoids water vapor from entering to affect the internal insulation, and avoids the cross winding of the lead end through the circumferential arrangement of the sheath. The let-out notch is provided at the end of the sheath away from the lead mounting hole and communicates with the lead mounting hole, and the let-out notch increases the variability of the connection direction of the lead end. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 A plastic package stator provided by the utility model is shown in the figure.

[0021] Figure 2 A sheath end portion of the plastic package stator provided by the utility model is shown in the figure.

[0022] Figure 3 An annular end cover end portion of the plastic package stator provided by the utility model is shown in the figure.

[0023] Figure 4 A full-coated annular end cover provided by the utility model is shown in the figure.

[0024] Figure 5 A double-end sheath provided by the utility model is shown in the figure.

[0025] In the figure, 10 is the stator body; 11 is the lead wire end; 12 is the annular step; 20 is the annular end cap; 21 is the annular protrusion; 22 is the cylindrical part; 23 is the end cap part; 24 is the mounting groove; 30 is the sheath; 31 is the lead wire mounting hole; and 32 is the clearance notch. Detailed Implementation

[0026] Example 1, please refer to Figures 1 to 3 This is a schematic diagram of a plastic-encapsulated stator provided by this utility model.

[0027] This plastic-encapsulated stator includes: a stator body 10, a stator body 10 disposed on an annular end cover 20, and a sheath 30 disposed on the annular end cover 20. It is conceivable that this plastic-encapsulated stator also includes other functional components and specific structures, such as electrical connection components and mounting structures, all of which are well-known to those skilled in the art and therefore will not be described in detail here.

[0028] The stator body 10 is a circumferentially enclosed stator core or coil frame, on which coil windings are wound. A through hole for the rotor to pass through is provided inside the stator body 10. In this embodiment, a lead end 11 protruding from the end face of the stator body 10 is provided at one end of the stator body 10. The lead end 11 enables electrical connection between the stator body 10 and the outside world, or data connection with sensors.

[0029] In this embodiment, the annular end cap 20 is a split design, with annular end caps 20 respectively provided at both ends of the stator body 10. The outer contour of the annular end cap 20 is close to the contour of the stator body 10, ensuring that the annular end cap 20 can seal both ends of the stator body 10. The annular end cap 20 is filled and thermoset with BMC material through a mold to form a protective layer on the outside of the stator body 10. The outer wall of the annular end cap 20 is flush with the outer wall of the stator body 10, ensuring the flatness of the stator body 10 during installation. Specifically, annular steps 12 are provided at both ends of the stator body, and annular protrusions 21 are provided on the annular end cap 20 and are sleeved on the circumferential outer wall of the annular steps 12. The combination of the annular protrusions 21 and the annular steps 12 ensures the installation reliability and sealing of the annular end cap 20. The lead end 11 passes through the annular end cap 20 axially. Ideally, the inner diameter of the annular end cap 20 is smaller than the inner diameter of the stator body 10, which reduces the difficulty of material filling and prevents the rotor from passing through the outer walls at both ends of the stator body 10 and contacting the annular end cap 20.

[0030] In other embodiments, please refer to Figure 4 The annular end cap 20 includes a cylindrical portion 22 sleeved on the outer circumferential wall of the stator body 10. The two ends of the cylindrical portion 22 are provided with end cap portions 23 connected to the ends of the stator body 10. The cylindrical portion 22 and the end cap portions 23 achieve complete enclosure of the stator body 10.

[0031] In this embodiment, a sheath 30 is provided on the same side end face of the annular end cover 20. The sheath 30 and the annular end cover 20 are an integral structure. The sheath 30 corresponds to the lead end 11. When the stator body 10 has only one end with the lead end 11, the sheath 30 is provided at intervals on one side of the annular end cover 20, and the end of the annular end cover 20 away from the sheath 30 is provided with a recessed mounting groove 24. The lead end 11 is an enameled wire structure protruding from the annular end cover 20. The sheath 30 is used to protect the structure of the lead end 11, and the mounting groove 24 facilitates the positioning and installation of the end of the stator body 10. The sheath 30 has three circumferentially arranged sleeves, which axially protrude from the end face of the annular end cap 20. The sheath 30 has an axially arranged lead wire mounting hole 31. The outer wall profile of the sheath 30 is close to an ellipse. The outer wall profile of the sheath 30 is smooth and provides protection. The lead wire end 11 passes through the lead wire mounting hole 31. The integrated annular end cap 20 and sheath 30 solve the problem of copper wire exposure of the lead wire end 11 caused by stator vibration. At the same time, it increases the sealing between the sheath 30 and the annular end cap 20, preventing moisture from entering and affecting the internal insulation. Moreover, the circumferential arrangement of the sheath 30 prevents the lead wire end 11 from crossing and winding. At the end of the sheath 30 away from the lead wire mounting hole 31, there is a clearance notch 32 that communicates with the lead wire mounting hole 31, which increases the variability of the connection direction of the lead wire end 11. In addition, the opening direction of the clearance notch 32 is located on the radial inside of the sheath 30 to avoid interference between the lead end 11 and other components when it bends outward.

[0032] The circumferential edge of the sheath 30 is located inside the circumferential edge of the annular end cap 20, further increasing the routing space of the lead end 11.

[0033] In other embodiments, please refer to Figure 5 Both sides of the annular end cover 20 are provided with sheaths 30, that is, the stator body 10 is provided with lead wire ends 11 at both ends, which realizes the convenience of double-end electrical connection and improves the freedom of component installation.

[0034] Example 2: The structure and principle of this example are basically the same as those of Example 1. The only difference is that this utility model also provides a plastic-encapsulated motor with a plastic-encapsulated stator as described above. Except for the plastic-encapsulated stator, all other components are existing technology or commercially available parts.

[0035] 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.

Claims

1. A plastic encapsulated stator, characterized by, The application relates to a plastic-sealed stator, which comprises the following parts: a stator body (10) provided with lead terminals (11) protruding from the end face of the stator body (10); annular end covers (20) arranged on the stator body (10) and capable of sealing the two ends of the stator body (10), wherein the lead terminals (11) pass through the annular end covers (20); a sheath (30) provided with at least two and arranged on the same side of the end face of the annular end cover (20) in a circumferential direction, wherein the sheath (30) protrudes axially from the end face of the annular end cover (20), the sheath (30) is provided with lead mounting holes (31) arranged axially, and the end of the sheath (30) away from the lead mounting holes (31) is provided with a gap notch (32) in communication with the lead mounting holes (31).

2. The plastic package stator according to claim 1, wherein The circumferential edge of the sheath (30) is located inside the circumferential edge of the annular end cover (20).

3. The plastic package stator according to claim 2, wherein The opening direction of the gap notch (32) is located inside the radial direction of the sheath (30).

4. The plastic package stator according to claim 3, wherein The annular end cover (20) is provided with two and arranged at the two ends of the stator body (10) in a spaced manner, and the outer wall of the annular end cover (20) is flush with the outer wall of the stator body (10).

5. The plastic package stator according to claim 4, wherein The two ends of the stator body are provided with annular steps (12), the annular end cover (20) is provided with annular convex parts (21) and is sleeved on the circumferential outer wall of the annular steps (12).

6. The plastic package stator according to claim 3, wherein The annular end cover (20) comprises a cylindrical part (22) sleeved on the circumferential outer wall of the stator body (10), and the two ends of the cylindrical part (22) are provided with end cover parts (23) connected to the end parts of the stator body (10).

7. The plastic package stator according to claim 4 or 6, characterized by, The inner diameter of the annular end cover (20) is smaller than the inner diameter of the stator body (10).

8. The plastic package stator according to claim 3, wherein One side of the annular end cover (20) is provided with a sheath (30) in a spaced manner, and the end of the annular end cover (20) away from the sheath (30) is provided with a recessed mounting groove (24).

9. The plastic package stator according to claim 3, wherein The two sides of the annular end cover (20) are provided with sheaths (30).

10. A plastic encapsulated motor characterized by, The application further discloses a plastic-sealed stator provided with the plastic-sealed stator.

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