Plastic package motor and air conditioner
By setting an annular sealing ring and an interference fit structure between the end cap and the encapsulated part of the encapsulated motor, the problem of poor sealing performance is solved, achieving higher sealing performance and stability, and ensuring the safety of the control board.
Patent Information
- Application Number
- CN202423085173.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-13
- Publication Date
- 2025-11-18
- Estimated Expiration
- 2034-12-13
AI Technical Summary
In existing encapsulated motors, the sealing performance between the end cap and the encapsulation part is poor, which makes the motor susceptible to water and dust intrusion, affecting the stability of the motor and the safety of the control board.
An annular sealing ring is provided between the end cap and the plastic sealing part, and the sealing performance is improved by the interference fit of the annular protrusion and groove, combined with the tension of the annular sealing ring.
It effectively reduces the possibility of external water and dust entering the motor, improves the stability of the motor and the safety of the control board, and ensures good sealing performance inside the motor.
Smart Images
Figure CN223567429U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to plastic package motor technical field, concretely relates to a plastic package motor and air conditioner. BACKGROUND
[0002] The plastic package DC motor has the characteristics of beautiful appearance, high precision, low weight, excellent insulation performance and the like compared with the iron shell type DC motor, and is widely used in the household appliance field. In low-power motors, the plastic package DC motor has a greater advantage compared with the iron shell DC motor. The DC motor is divided into an internal drive motor and an external drive motor. In order to realize the miniaturization of household appliances, more and more motors realize the packaging of the motor control board in the motor, which has reduced the control area of the appliance.
[0003] The heat of the electronic chip on the motor control board must require good heat dissipation conditions at the motor control board, so the control board has a contact relationship with the heat-dissipating iron product parts (end cover). Water and dust can easily cause the control board to short circuit, so the plastic package DC motor needs to have better sealing performance. Figure 3 As shown in the figure, in the existing plastic package motor, the end cover and the plastic package part only rely on extrusion to form a seal, and the sealing performance between the end cover and the plastic package part is poor.
[0004] How to improve the sealing performance of the plastic package motor is a technical problem that needs to be solved at present. Utility model content
[0005] Therefore, the utility model provides a plastic package motor and air conditioner, which can improve the sealing performance between the end cover and the plastic package part of the plastic package motor in the prior art.
[0006] On the one hand, the utility model provides a plastic package motor, including stator, the stator periphery is provided with plastic package part, the plastic package part is provided with end cover in the axial direction of the stator first end, the plastic package part includes the first annular end face towards the end cover, the end cover includes the second annular end face towards the first annular end face, the first annular end face with the second annular end face between being provided with annular sealing ring.
[0007] In some embodiments, the first annular end face is a plane structure, and the annular sealing ring includes a plane part that is in contact with the first annular end face.
[0008] In some embodiments, the second annular end face is a plane structure, and the annular sealing ring includes a concave surface that is in extrusion contact with the second annular end face, and the concave surface extends along the circumferential direction of the stator.
[0009] In some embodiments, the end cover comprises a cylindrical portion, and the second annular end face is arranged at an end of the cylindrical portion; in a cross section along the axis of the stator, the concave surface is V-shaped, and the cylindrical portion extends into the concave surface towards one end of the annular sealing ring.
[0010] In some embodiments, the first end of the plastic sealing portion comprises an annular protrusion surrounding the axis of the stator, and the first annular end face is arranged outside the annular protrusion in the radial direction of the stator; the end cover is provided with an annular groove surrounding the axis of the stator, and the cylindrical portion is arranged outside the annular groove in the radial direction of the stator, and the annular groove is sleeved on the annular protrusion.
[0011] In some embodiments, the annular groove is in interference fit with the annular protrusion.
[0012] In some embodiments, the annular sealing ring is sleeved on the outer periphery of the annular protrusion and is in tension.
[0013] In some embodiments, in the axial direction of the stator, the bottom wall of the annular groove is in contact with the top wall of the annular protrusion.
[0014] In some embodiments, the plastic sealing motor further comprises a control board, which is arranged inside the plastic sealing motor and is in heat-conducting contact with the end cover.
[0015] In another aspect, the utility model also provides a kind of air conditioner, comprising the plastic sealing motor.
[0016] The utility model discloses a plastic sealing motor, which comprises an end cover and a plastic sealing portion, wherein the end cover is provided with a first annular end face, and the plastic sealing portion is provided with a second annular end face; the end cover is provided with an annular sealing ring, and the annular sealing ring is arranged between the end cover and the plastic sealing portion. BRIEF DESCRIPTION OF DRAWINGS
[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the description of the embodiments or the prior art. The drawings in the following description are only exemplary, and for those skilled in the art, other implementation drawings can be derived from the provided drawings without creative labor.
[0018] Figure 1 The plastic sealing motor of the utility model is partially integrated;
[0019] Figure 2 The plastic sealing motor of the utility model is partially integrated; Figure 1 The enlarged view of A in the middle;
[0020] Figure 3 is a schematic diagram of a prior art plastic encapsulated motor;
[0021] Reference signs are:
[0022] 1, plastic encapsulated part; 2, end cap; 3, stator; 301, first annular end face; 302, second annular end face; 4, rotating shaft; 5, annular sealing ring; 601, flat surface; 602, concave surface; 603, cylindrical surface; 604, annular protrusion; 605, annular groove. DETAILED DESCRIPTION
[0023] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. The description of the at least one exemplary embodiment is actually only illustrative, but not as any limitation on the present application and its application or use. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.
[0024] In the description of the present application, it should be understood that the orientation words such as "front, back, up, down, left, right", "horizontal, vertical, perpendicular, horizontal" and "top, bottom" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and in the absence of the opposite description, these orientation words do not indicate and imply that the indicated device or element must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the scope of protection of the present application; the orientation words "inner, outer" refer to the inner and outer of the contour of each component itself.
[0025] In order to facilitate the description, spatial relative terms such as "above", "upper", "upper surface", "upper" and the like can be used herein to describe the spatial positional relationship of one device or feature with respect to other devices or features as shown in the drawings. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation of the device described in the drawings. For example, if the device in the drawing is inverted, the device described as "above" or "above" other devices or structures will be positioned "below" or "below" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below" orientations. The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein are interpreted accordingly.
[0026] In addition, it should be noted that the use of the terms "first", "second" and the like to define parts is merely for the convenience of distinguishing the corresponding parts, and the above terms have no special meaning unless otherwise stated, and therefore cannot be understood as limiting the scope of protection of the utility model.
[0027] The utility model provides a kind of plastic package motor and air conditioner, can improve the sealing performance between the end cover of plastic package motor in prior art and plastic package part.
[0028] In conjunction with referring to Figures 1-2 As shown in the figure, a kind of plastic package motor, including stator 3, the outer periphery of the stator 3 is provided with plastic package part 1, the first end of the axial direction of the stator 3 is provided with end cover 2, the plastic package part 1 includes the first annular end face 301 towards the end cover 2, the end cover 2 includes the second annular end face 302 towards the first annular end face 301, the first annular end face 301 and the second annular end face 302 between them are provided with annular sealing ring 5.
[0029] For plastic package motor, the gap between end cover 2 and plastic package part 1 is the biggest factor affecting motor seal, by setting annular sealing ring 5 between plastic package part 1 and end cover 2, further improve the sealing performance between end cover 2 and plastic package part 1, reduce the possibility of dust and water outside motor into the inside of motor, greatly reduce the possibility of motor damage due to water, dust into motor, improve the stability of motor work.
[0030] The first annular end face 301 and the second annular end face 302 both surround the stator 3.
[0031] Further, the first end of plastic package part 1 is the rear end, the other end is the second end, the second end is the front end, and the rotating shaft 4 of the plastic package motor extends from the second end.
[0032] Preferably, as shown in Figure 1 And Figure 2 The first annular end face 301 is a plane structure, and the annular sealing ring 5 includes a plane part 601 that is attached to the first annular end face 301.
[0033] The first annular end face 301 is a plane structure, and the position where the annular sealing ring 5 is attached to the first annular end face 301 is a plane part 601, the two plane structures are attached to each other to form a face seal, further improving the sealing area, which is conducive to improving the sealing performance between the annular sealing ring 5 and the plastic package part 1.
[0034] Preferably, as shown in Figure 1 And Figure 2As shown in the figure, the second annular end face 302 is a flat structure, and the annular sealing ring 5 comprises a concave surface 602 in extrusion contact with the second annular end face 302, which extends along the circumferential direction of the stator 3.
[0035] The second annular end face 302 is a flat structure, and the annular sealing ring 5 is in a concave surface 602 structure opposite to the second annular end face 302, which makes the second annular end face 302 extrude the concave surface 602 structure to deform more easily, thereby improving the sealing performance between the annular sealing ring 5 and the end cover 2.
[0036] Preferably, as shown in the figures, Figure 1 and Figure 2 As shown in the figure, the end cover 2 comprises a cylindrical portion 603, and the second annular end face 302 is arranged at the end of the cylindrical portion 603; in the cross section along the axis of the stator 3, the concave surface 602 is V-shaped, and one end of the cylindrical portion 603 extends into the concave surface 602.
[0037] Since the concave surface 602 is V-shaped, the second annular end face 302 is arranged on the cylindrical portion 603, and one end of the cylindrical portion 603 extends into the concave surface 602, the contact part between the second annular end face 302 and the concave surface 602 is two circular ring surfaces (the contact part must be a surface structure due to extrusion), the two circular ring surfaces simultaneously surround the axis of the stator 3, and the two circular ring surfaces constitute a double sealing structure, further improving the sealing performance between the annular sealing ring 5 and the end cover 2.
[0038] Further, the two surfaces of the concave surface 602 are perpendicular to each other, that is, 90°.
[0039] Preferably, as shown in the figures, Figure 1 and Figure 2 As shown in the figure, the first end of the plastic sealing portion 1 comprises an annular protrusion 604 surrounding the axis of the stator 3, and in the radial direction of the stator 3, the first annular end face is arranged outside the annular protrusion 604; the end cover 2 is provided with an annular groove 605 surrounding the axis of the stator 3, and in the radial direction of the stator 3, the cylindrical portion 603 is arranged outside the annular groove 605, and the annular groove 605 is sleeved on the annular protrusion 604.
[0040] By arranging the annular protrusion 604 on the plastic sealing portion 1 and the annular groove 605 on the end cover 2, the end cover 2 is sleeved on the annular protrusion 604 of the plastic sealing portion 1 through the annular groove 605, thereby positioning the end cover 2 and avoiding displacement of the end cover 2 relative to the plastic sealing portion 1 in the radial direction, thereby ensuring that the annular sealing ring 5 is in a relatively stable state between the end cover 2 and the plastic sealing portion 1, and improving the sealing performance between the end cover 2 and the plastic sealing portion 1.
[0041] Preferably, as shown in the figures,Figure 1 and Figure 2 As shown in the figure, the annular groove 605 is in interference fit with the annular protrusion 604.
[0042] The end cover 2 is fixed with the annular protrusion 604 through interference, further improving the stability of the position of the end cover 2 and the plastic sealing part 1 in the radial direction, and further improving the sealing performance between the end cover 2 and the plastic sealing part 1.
[0043] Preferably, as shown in the figure, Figure 1 and Figure 2 The annular sealing ring 5 is sleeved on the outer periphery of the annular protrusion 604 and is in a tension state.
[0044] The annular sealing ring 5 is sleeved on the outer periphery of the annular protrusion 604 and is in a tension state, that is, compared with the annular sealing ring 5 not being subjected to external force, the annular sealing ring 5 is in a stretched state when it is sleeved on the outer periphery of the annular protrusion 604, which improves the sealing performance between the annular sealing ring 5 and the annular protrusion 604.
[0045] Preferably, as shown in the figure, Figure 1 and Figure 2 In the axial direction of the stator 3, the bottom wall of the annular groove 605 is in contact with the top wall of the annular protrusion 604.
[0046] The bottom wall of the annular groove 605 is in contact with the top wall of the annular protrusion 604, which not only can increase the sealing performance between the annular groove 605 and the annular protrusion 604, but also can avoid that the annular sealing ring 5 is subjected to excessive extrusion deformation and causes the sealing performance to decrease; that is, the bottom wall of the annular groove 605 is in contact with the top wall of the annular protrusion 604, which not only improves the sealing performance between the annular groove 605 and the top wall, but also improves the sealing performance of the annular sealing ring 5.
[0047] Preferably, as shown in the figure, Figure 1 and Figure 2 Figure 1 Figure 2 The plastic sealing motor further comprises a control panel, and the control panel is arranged inside the plastic sealing motor and is in heat-conducting contact with the end cover 2.
[0048] Since the annular sealing ring 5 is arranged between the end cover 2 and the plastic sealing part 1, the sealing performance inside the motor is improved; the control panel is arranged inside the motor, the internal space of the motor is fully utilized, and the safety degree of the control panel is also improved, so that the control panel can work stably.
[0049] Further, the end cover 2 is made of metal iron, and the plastic sealing motor is a plastic sealing direct-current motor.
[0050] The utility model provides a kind of air conditioner, including the plastic sealing motor.
[0051] The plastic-sealed motor can prevent external water and dust from entering the inside of the plastic-sealed motor when the plastic-sealed motor is arranged outdoors, and effectively improves the stability of the air conditioner.
[0052] Those skilled in the art can understand that the advantageous technical features of the above-mentioned modes can be freely combined and superimposed without conflict.
[0053] The above merely describes the preferred embodiments of the present application, and is not intended to limit the present application, and any modification, equivalent replacement and improvement within the spirit and principle of the present application shall be included in the protection scope of the present application. The above merely describes the preferred embodiments of the present application, and it should be pointed out that, for ordinary skilled in the art, without departing from the technical principle of the present application, a number of improvements and variations can be made, and these improvements and variations shall be considered as the protection scope of the present application.
Claims
1. A plastic-sealed motor comprising a stator (3) provided with a plastic-sealed portion (1) on the outer periphery thereof, the plastic-sealed portion (1) being provided with an end cover (2) at a first end in the axial direction of the stator (3), characterized in that, The plastic sealing part (1) comprises a first annular end face (301) facing the end cover (2), the end cover (2) comprises a second annular end face (302) facing the first annular end face (301), and an annular sealing ring (5) is arranged between the first annular end face (301) and the second annular end face (302).
2. The plastic encapsulated motor of claim 1, wherein, The first annular end face (301) is a planar structure, and the annular sealing ring (5) comprises a planar part (601) abutting the first annular end face (301).
3. The plastic encapsulated motor of claim 1, wherein, The second annular end face (302) is a planar structure, and the annular sealing ring (5) comprises a concave surface (602) in extrusion contact with the second annular end face (302), and the concave surface (602) extends along the circumferential direction of the stator (3).
4. The plastic encapsulated motor of claim 3, wherein, The end cover (2) comprises a cylindrical part (603), and the second annular end face (302) is arranged at the end of the cylindrical part (603); in the cross section passing through the axis of the stator (3), the concave surface (602) is V-shaped, and one end of the cylindrical part (603) extends into the concave surface (602) towards the annular sealing ring (5).
5. The plastic encapsulated motor of claim 4, wherein, The first end of the plastic sealing part (1) comprises an annular protrusion (604) surrounding the axis of the stator (3), and in the radial direction of the stator (3), the first annular end face (301) is arranged outside the annular protrusion (604); the end cover (2) is provided with an annular groove (605) surrounding the axis of the stator (3), and in the radial direction of the stator (3), the cylindrical part (603) is arranged outside the annular groove (605), and the annular groove (605) is sleeved on the annular protrusion (604).
6. The plastic encapsulated motor of claim 5, wherein, The annular groove (605) and the annular protrusion (604) are in interference fit.
7. The plastic encapsulated motor of claim 5, wherein, The annular sealing ring (5) is sleeved on the outer periphery of the annular protrusion (604) and is in a tension state.
8. The plastic encapsulated motor of claim 5 wherein, In the axial direction of the stator (3), the bottom wall of the annular groove (605) abuts the top wall of the annular protrusion (604).
9. The plastic encapsulated motor according to any one of claims 1-8, wherein, The plastic sealing motor further comprises a control board arranged inside the plastic sealing motor and in heat-conducting contact with the end cover (2).
10. An air conditioner characterized by comprising: The plastic sealing motor comprises the plastic sealing motor according to any one of claims 1-9. The plastic sealing motor comprises the plastic sealing motor according to any one of claims 1-9.