Motor stator potting device and motor

Abstract

The utility model discloses a motor stator potting device and a motor, which are used to cooperate with the casing of the motor to pot the stator in the casing; the stator axial limit is located in the casing, and a first gap is formed between the stator and the inner wall of the casing, and the motor stator potting device includes a mold core, a support member and a mold cover; the mold core is coaxially inserted into the inner hole of the stator, the support member is tightly sleeved outside the mold core and forms a second gap with the inner hole wall and forms a protective layer of the inner hole wall together with the potting material; the mold cover includes a first mold cover and a second mold cover respectively installed at both ends of the casing; the first mold cover is provided with a potting hole and an exhaust hole connected to the first gap and the second gap. When the device is working, the first gap and the second gap are filled with potting material to achieve the glue sealing of the stator. The support member and the potting material in the second gap together form a protective layer, which improves the strength and wear resistance of the protective layer, prevents the stator from rusting when it encounters water, and enables the motor to work for a long time and stably.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, in particular to a motor stator potting device and a motor. Background Art

[0002] The coils of the motor stator need to be insulated and heat-dissipated. If water enters the stator, the core will rust and the motor will fail after a while.

[0003] However, if the entire coil is simply potted with waterproof material, the inner hole wall of the mold core is not protected and is exposed to a water environment, the mold core will rust when it comes into contact with water, which will not meet market requirements and cannot achieve long-term and stable operation, affecting the quality of the motor.

[0004] Therefore, a motor stator potting device is urgently needed to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide a motor stator potting device and a motor, so as to solve the problem in the related art that the inner hole wall of the stator mold core is not protected and is exposed to a water environment, the stator core will rust when it meets water, resulting in the motor being unable to work long-term and stably, affecting the quality of the motor.

[0006] On the one hand, the utility model provides a motor stator potting device, which is used to cooperate with a motor casing to pot the stator in the casing; the stator is axially limited in the casing and forms a first gap with the inner wall of the casing, and the motor stator potting device includes:

[0007] A mold core is coaxially inserted into the inner hole of the stator and is suitable for being separated from the inner hole after potting;

[0008] A support member is tightly sleeved outside the mold core and forms a second gap with the wall of the inner hole; the support member is suitable for forming a protective layer of the wall of the inner hole together with the potting material to improve the strength of the protective layer;

[0009] The mold cover comprises a first mold cover and a second mold cover respectively mounted at two ends of the housing; the first mold cover is provided with a filling hole and an exhaust hole connected with both the first gap and the second gap.

[0010] As a preferred technical solution for the motor stator potting device, the support member is a fiber resin sleeve.

[0011] As a preferred technical solution for the motor stator potting device, the support member is a fiber mesh sleeve.

[0012] As a preferred technical solution of the motor stator potting device, the inner wall of the housing is provided with a clamping protrusion, and the stator is arranged in the housing so that the clamping protrusion supports the stator.

[0013] As a preferred technical solution of the motor stator potting device, it also includes a first sealing ring and a second sealing ring, the first mold cover is provided with the first sealing ring, and the first mold cover is inserted into one end of the housing so that the first mold cover and the inner wall of the housing press the first sealing ring tightly;

[0014] The second mold cover is provided with the second sealing ring, and the second mold cover is inserted into the other end of the casing so that the second mold cover and the inner wall of the casing press the second sealing ring tightly.

[0015] As a preferred technical solution of the motor stator potting device, a first limiting groove is provided on the peripheral wall of the first mold cover opposite to the inner wall of the housing or on the inner wall of the housing opposite to the first mold cover, and the first sealing ring is located in the first limiting groove;

[0016] A second limiting groove is provided on the peripheral wall of the second mold cover opposite to the inner wall of the housing or on the inner wall of the housing opposite to the second mold cover, and the second sealing ring is located in the second limiting groove.

[0017] As a preferred technical solution of the motor stator potting device, the first sealing ring is coated with lubricating grease, and the second sealing ring is coated with lubricating grease.

[0018] As a preferred technical solution for the motor stator potting device, a first concave hole is provided on a surface of the first mold cover opposite to the mold core, and one end of the mold core is inserted into the first concave hole.

[0019] As a preferred technical solution for the motor stator potting device, a second concave hole is provided on the surface of the second mold cover opposite to the mold core, and the other end of the mold core is inserted into the second concave hole.

[0020] As a preferred technical solution of the motor stator potting device, the casing is the shell of the motor.

[0021] On the other hand, the utility model also provides a motor, including a stator; the inner hole wall of the stator is provided with a protective layer as in the above solution.

[0022] The beneficial effects of the utility model are:

[0023] The utility model provides a motor stator potting device and a motor, which are used to cooperate with the motor casing to pot the stator in the casing; the stator axial limit is located in the casing, and a first gap is formed between the stator and the inner wall of the casing; the motor stator potting device includes a mold core, a support member and a mold cover, which are coaxially inserted into the inner hole of the stator and are suitable for being separated from the inner hole after potting; the support member is tightly sleeved outside the mold core and forms a second gap with the inner hole wall; the support member is suitable for forming a protective layer of the inner hole wall together with the potting material to improve the strength of the protective layer; the mold cover includes a first mold cover and a second mold cover respectively installed at both ends of the casing; the first mold cover is provided with a potting hole and an exhaust hole connected to the first gap and the second gap. When the device is working, the potting material is poured in from the potting hole until the first gap and the second gap are filled with the potting material, and the potting material is solidified to achieve the glue sealing of the stator. Thereby, the stator is isolated from the water environment, and the stator is prevented from rusting when it encounters water, so that the motor can work for a long time and stably, and the motor quality is improved. At the same time, the support member and the potting material in the second gap together form a protective layer, so that the inner wall protective layer after potting is strong, corrosion-resistant, and thin. This setting not only overcomes the problem of the metal shielding sleeve affecting the motor efficiency in the prior art, but also avoids the problem of cracking or rapid wear of the protective layer when the motor rotor rotates relative to the stator. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 Schematic diagram of the structure of the motor stator potting device in the embodiment of the utility model (excluding the first mold cover and the second mold cover);

[0025] Figure 2 for Figure 1 A partial enlarged view of the middle A;

[0026] Figure 3 This is a schematic structural diagram of a motor stator potting device in an embodiment of the utility model;

[0027] Figure 4 This is a schematic diagram of the structure of the support member in the embodiment of the utility model;

[0028] Figure 5 for Figure 3 A partial enlarged view of point B in the middle;

[0029] Figure 6 for Figure 3 A partial enlarged view of point C in the middle;

[0030] Figure 7 for Figure 3 A partial enlarged view of point D in the middle.

[0031] In the figure:

[0032] 100, stator; 101, iron core; 102, inner hole;

[0033] 1. housing; 11. inner cavity; 111. first gap; 12. cam;

[0034] 2. mold core; 21. second gap;

[0035] 3. Support parts;

[0036] 4. first mold cover; 42. first limiting groove; 43. first concave hole; 44. injection hole; 45. exhaust hole;

[0037] 5. second mold cover; 52. second limiting groove; 53. second concave hole;

[0038] 6. First sealing ring; 7. Second sealing ring. DETAILED DESCRIPTION

[0039] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0040] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions, and the first feature "above", "above" and "above" the second feature include the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. The first feature "below", "below" and "below" the second feature include the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0041] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0043] like Figure 1 to Figure 7 As shown, the present embodiment provides a motor stator potting device, which is used to cooperate with the motor casing 1 to pot the stator 100 in the casing 1; the stator 100 is axially limited in the casing 1, and a first gap 111 is formed between the stator 100 and the inner wall of the casing 1, and the motor stator potting device includes a mold core 2, a support member 3 and a mold cover, which are coaxially inserted into the inner hole 102 of the stator 100 and are suitable for being separated from the inner hole 102 after potting; the support member 3 is tightly sleeved on the outside of the mold core 2 and a second gap 21 is formed between the wall of the inner hole 102; the support member 3 is suitable for forming a protective layer of the wall of the inner hole 102 together with the potting material to enhance the strength of the protective layer; the mold cover includes a first mold cover 4 and a second mold cover 5 respectively mounted at both ends of the casing 1; the first mold cover 4 is provided with a potting hole 44 and an exhaust hole 45 which are connected to the first gap 111 and the second gap 21. When the device is working, the potting material is poured in from the pouring hole 44 until the first gap 111 and the second gap 21 are filled with the potting material, and after the potting material solidifies, the stator 100 is sealed. In this way, the stator 100 is isolated from the water environment to prevent the stator 100 from rusting when it encounters water, so that the motor can work long-term and stably, and the motor quality is improved. At the same time, the support member 3 and the potting material in the second gap 21 together form a protective layer. The support member 3 can greatly improve the strength and wear resistance of the protective layer, and avoid the problem of cracking or rapid wear of the protective layer when the motor rotor rotates relative to the stator.

[0044] Specifically, the exhaust hole 45 functions to exhaust the gas in the first gap 111 and the second gap 21 to facilitate the potting material to enter the first gap 111 and the second gap 21 .

[0045] Specifically, the housing 1 is provided with an inner cavity 11 , and the stator 100 is disposed in the inner cavity 11 and is spaced apart from the cavity wall of the inner cavity to form a first gap 111 .

[0046] Optionally, the potting material may be polyurethane, epoxy resin, silicone rubber, phenolic resin, or the like.

[0047] Optionally, the support member 3 is a fiber mesh sleeve. In this embodiment, the fiber mesh sleeve is sleeved on the mold core 2. When the potting material fills the second gap 21, the potting material infiltrates the fiber mesh sleeve, and the potting material and the fiber mesh sleeve form an integral protective layer. The fiber mesh sleeve can enhance the strength of the protective layer and enhance its durability. When the fiber mesh sleeve rotates relative to the motor rotor, the potting material in this part will not wear and crack quickly. Therefore, the durability of the stator 100 seal can be improved, and the overall life of the motor can be improved.

[0048] In other embodiments, the support member 3 is optionally a fiber resin sleeve. In this embodiment, the fiber resin sleeve is a prefabricated member, which has strong wear resistance and high strength, and is not prone to rapid wear and cracking with the motor rotor, so it can improve the durability of the stator 100 seal and the overall life of the motor.

[0049] Optionally, the fiber mesh sleeve can be one of a carbon fiber mesh sleeve, a glass fiber mesh sleeve, or a basalt fiber mesh sleeve, wherein the fiber mesh sleeve can be a single layer or multiple layers. Since an air gap is required between the stator 100 and the rotor, the gap between the stator and the rotor needs to be maintained after potting, which requires that the inner diameter D1 of the stator 100 after potting is 0.6mm to 1mm smaller than the inner diameter D2 of the stator 100 before potting, and the thickness of the support member 3 is controlled between 0.2mm and 0.5mm.

[0050] Optionally, the inner wall of the inner cavity 11 is provided with a clamping protrusion 12, and the stator 100 is arranged in the inner cavity 11, so that the clamping protrusion 12 supports the stator 100. In this embodiment, the clamping protrusion 12 is an annular protrusion convexly arranged on the inner wall of the inner cavity 11 around the axial direction of the inner cavity 11, and the annular protrusion supports the stator 100 in the vertical direction to limit the movement of the stator 100 relative to the housing 1 along the axial direction of the inner cavity 11. In other embodiments, the clamping protrusion 12 can also be a plurality of protrusion structures arranged on the inner wall of the inner cavity 11, and the plurality of protrusion structures are arranged at intervals around the inner circumferential wall of the inner cavity 11.

[0051] Optionally, the motor stator potting device further includes a first sealing ring 6 and a second sealing ring 7, the first mold cover 4 is sleeved with the first sealing ring 6, and the first mold cover 4 is inserted in the inner cavity 11, so that the first mold cover 4 and the housing 1 press the first sealing ring 6; the second mold cover 5 is sleeved with the second sealing ring 7, and the second mold cover 5 is inserted in the inner cavity 11, so that the second mold cover 5 and the housing 1 press the second sealing ring 7. In this embodiment, the first sealing ring 6 can improve the sealing between the first mold cover 4 and the wall of the injection hole 44, thereby preventing the potting material from leaking from the gap between the first mold cover 4 and the wall of the inner cavity 11. The second sealing ring 7 can improve the sealing between the second mold cover 5 and the wall of the inner cavity 11, thereby preventing the potting material from leaking from the gap between the second mold cover 5 and the wall of the injection hole 44. Specifically, the first sealing ring 6 and the second sealing ring 7 are both made of high temperature resistant rubber material.

[0052] Optionally, a first limiting groove 42 is provided on the circumferential wall of the first mold cover 4 opposite to the inner cavity 11 or on the cavity wall of the inner cavity 11 opposite to the first mold cover 4, and the first sealing ring 6 is located in the first limiting groove 42; a second limiting groove 52 is provided on the circumferential wall of the second mold cover 5 opposite to the inner cavity 11 or on the cavity wall of the injection hole 44 opposite to the second mold cover 5, and the second sealing ring 7 is located in the second limiting groove 52. In this embodiment, the first sealing ring 6 is located in the first limiting groove 42, and this arrangement can prevent the first sealing ring 6 from sliding relative to the first mold cover 4 along the axial direction of the inner cavity 11 when the first mold cover 4 is inserted into the inner cavity 11, thereby affecting the sealing between the first mold cover 4 and the cavity wall of the inner cavity 11. The function of the second limiting groove 52 is the same as that of the first limiting groove 42, which will not be repeated here.

[0053] Optionally, the first sealing ring 6 is coated with lubricating grease, and the second sealing ring 7 is coated with lubricating grease. In this embodiment, the purpose of coating the first sealing ring 6 with lubricating grease is to reduce the friction between the first sealing ring 6 and the cavity wall of the inner cavity 11, so as to facilitate the first mold cover 4 to be inserted into the inner cavity 11 with the first sealing ring 6. The purpose of coating the second sealing ring 7 with lubricating grease is to reduce the friction between the second sealing ring 7 and the cavity wall of the inner cavity 11, so as to facilitate the second mold cover 5 to be inserted into the inner cavity 11 with the second sealing ring 7.

[0054] Optionally, a first concave hole 43 is provided on the surface of the first mold cover 4 opposite to the mold core 2, and one end of the mold core 2 is inserted into the first concave hole 43; a second concave hole 53 is provided on the surface of the second mold cover 5 opposite to the mold core 2, and the other end of the mold core 2 is inserted into the second concave hole 53. In this embodiment, the purpose of the above arrangement is to fix the mold core 2 to ensure the separation of the mold core 2 and the inner hole (102).

[0055] Optionally, in other embodiments, the housing 1 may also be manufactured separately.

[0056] Optionally, the stator 100 sealed by the motor stator potting device can be used for a water pump motor.

[0057] This embodiment also provides a motor, including a stator 100, wherein the wall of an inner hole 102 of the stator 100 is provided with a protective layer as in the above solution.

[0058] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A motor stator potting device, used for cooperating with a motor casing (1) to pot a stator (100) in the casing (1); the stator (100) is axially limited in the casing (1) and forms a first gap (111) with the inner wall of the casing (1), characterized in that: The motor stator potting device comprises: A mold core (2) is coaxially inserted into the inner hole (102) of the stator (100) and is suitable for being separated from the inner hole (102) after potting; A support member (3) is tightly sleeved outside the mold core (2) and forms a second gap (21) with the wall of the inner hole (102); the support member (3) is suitable for forming a protective layer on the wall of the inner hole (102) together with the potting material to improve the strength of the protective layer; The mold cover comprises a first mold cover (4) and a second mold cover (5) respectively mounted at two ends of the housing (1); the first mold cover (4) is provided with a filling hole (44) and an exhaust hole (45) which are connected to both the first gap (111) and the second gap (21).

2. The motor stator potting device according to claim 1, characterized in that: The support member (3) is a fiber resin sleeve.

3. The motor stator potting device according to claim 1, characterized in that: The supporting member (3) is a fiber mesh sleeve.

4. The motor stator potting device according to claim 1, characterized in that: The inner wall of the housing (1) is provided with a locking protrusion (12), and the stator (100) is arranged in the housing (1) so that the locking protrusion (12) supports the stator (100).

5. The motor stator potting device according to claim 1, characterized in that: It also comprises a first sealing ring (6) and a second sealing ring (7), wherein the first mold cover (4) is sleeved with the first sealing ring (6), and the first mold cover (4) is inserted into one end of the housing (1), so that the first mold cover (4) and the inner wall of the housing (1) press the first sealing ring (6) tightly; The second mold cover (5) is sleeved with the second sealing ring (7), and the second mold cover (5) is inserted into the other end of the casing (1) so that the second mold cover (5) and the inner wall of the casing (1) press the second sealing ring (7) tightly.

6. The motor stator potting device according to claim 5, characterized in that: A first limiting groove (42) is provided on the peripheral wall of the first mold cover (4) opposite to the inner wall of the housing (1) or on the inner wall of the housing (1) opposite to the inner wall of the first mold cover (4), and the first sealing ring (6) is located in the first limiting groove (42); A second limiting groove (52) is provided on the peripheral wall of the second mold cover (5) opposite to the inner wall of the housing (1) or on the inner wall of the housing (1) opposite to the inner wall of the second mold cover (5), and the second sealing ring (7) is located in the second limiting groove (52).

7. The motor stator potting device according to claim 5, characterized in that: The first sealing ring (6) is coated with lubricating grease, and the second sealing ring (7) is coated with lubricating grease.

8. The motor stator potting device according to any one of claims 1 to 7, characterized in that: A first concave hole (43) is provided on the surface of the first mold cover (4) opposite to the mold core (2), and one end of the mold core (2) is inserted into the first concave hole (43).

9. The motor stator potting device according to claim 8, characterized in that: A second concave hole (53) is provided on the surface of the second mold cover (5) opposite to the mold core (2), and the other end of the mold core (2) is inserted into the second concave hole (53).

10. A motor, characterized in that It comprises a stator (100); the wall of an inner hole (102) of the stator (100) is provided with a protective layer as claimed in any one of claims 1 to 9.

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