Slit glue injection device for motor

Abstract

The utility model provides a slit glue injection device for a motor, which comprises a shell, the shell comprises a bottom plate, a cover plate and a side plate, the bottom plate and the side plate are connected to form a cavity with an opening, the cover plate covers the opening, and the cavity is used for accommodating a stator coil and a motor shell; the lower surface of the cover plate can abut against the upper end faces of the side plates and at least part of the upper surface of the motor shell. A positioning mandrel for sleeving the stator coil is arranged in the cavity; the cover plate is provided with an open hole, and a gap between the open hole and the positioning mandrel is used for accommodating a pouring sealant used for filling the gap between the stator coil and the motor shell; the side plate is provided with an air hole used for vacuumizing or exhausting, the air hole is communicated with a glue overflow hole of the motor shell, and the glue overflow hole is communicated with the gap and the cavity. According to the slit glue injection device for the motor provided by the utility model, the pouring sealant is extruded into the gap between the stator coil and the motor shell in a vacuum manner, so that the pouring quality is improved, the heat dissipation performance and reliability of the motor are improved, and the service life of the motor is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of motor stator potting, in particular to a slit glue injection device for a motor. Background Art

[0002] Semiconductor equipment requires motors to have high reliability. Due to the limited space of complex equipment, the size of the motor is strictly restricted, and the gap between the motor coil and the housing is often designed to be very narrow. In theory, a narrow gap will also improve the heat dissipation efficiency of the motor. However, it is very difficult to fill these narrow gaps with thermal conductive media. Good thermal conductive media generally have high viscosity and poor fluidity, and cannot completely fill the narrow gap between the stator coil and the motor housing, resulting in a large number of pores. These pores have high thermal resistance, resulting in the actual heat dissipation effect of the motor being far lower than the theoretical calculation. The motor works at a high temperature for a long time, and its reliability is seriously reduced.

[0003] In the prior art, the narrow gap between the stator coil and the motor housing is generally filled with glue by gravity, which may cause problems such as incomplete and uneven filling or bubbles, thereby resulting in poor heat dissipation performance of the motor, poor reliability of the motor, and short life. Utility Model Content

[0004] The utility model provides a slit glue injection device for a motor, which is used to solve the problems of incomplete, uneven or bubbling encapsulation caused by gravity encapsulation in the prior art, which further leads to poor heat dissipation performance of the motor, poor reliability of the motor and short life.

[0005] The utility model provides a slit glue injection device for a motor, comprising a housing, wherein the housing comprises a bottom plate, a cover plate and a side plate, wherein the bottom plate and the side plate are connected to form a cavity with an opening, wherein the cover plate covers the opening, and the cavity is used to accommodate a stator coil and a motor housing;

[0006] A positioning mandrel is provided in the cavity, the bottom end of the positioning mandrel is connected to the bottom plate, and the positioning mandrel is used to sleeve the stator coil;

[0007] The cover plate has an opening, the upper end of the positioning mandrel is located in the opening, and the gap between the opening and the positioning mandrel is used to accommodate a potting glue, and the potting glue is used to fill the gap between the stator coil and the motor housing;

[0008] The side plate has an air hole, which is used for vacuuming or exhausting. The air hole is connected to the glue overflow hole of the motor housing, and the glue overflow hole is connected to the gap and the cavity.

[0009] The utility model provides a slit glue injection device for a motor. On the one hand, vacuum is drawn through air holes, and overflow holes are provided to squeeze the potting glue into the gap between the stator coil and the motor housing, so that the viscous potting glue can completely fill the gap, thereby avoiding the occurrence of incomplete potting of the potting glue and the presence of bubbles, improving the potting quality, and further improving the heat dissipation performance of the motor, as well as the reliability and life of the motor; on the other hand, a positioning core shaft is provided to ensure that the gap between the stator coil and the motor housing is uniform.

[0010] Furthermore, the side panels are made of transparent material, so that it is easy to observe whether there is potting glue overflowing from the overflow hole and the filling speed of the potting glue, thereby ensuring the completeness of potting.

[0011] Furthermore, a sensor is provided at the overflow hole, and the sensor is used to detect whether the potting glue overflows from the overflow hole. The sensor is used to detect whether the potting glue overflows from the overflow hole. Such a setting ensures the completeness of potting.

[0012] Furthermore, there are a plurality of the glue overflow holes, which are arranged at intervals along the circumferential direction of the motor housing.

[0013] Furthermore, an adjustment block is provided in the cavity, the adjustment block is arranged on the bottom plate and sleeved on the positioning core shaft, and the adjustment block is used to support the stator coil and adjust the position of the stator coil.

[0014] Furthermore, the opening is a tapered hole, the upper end of the tapered hole has a large opening and the lower end has a small opening. In this way, the tapered hole provides a guide for the potting glue.

[0015] Furthermore, a first sealing member is provided between the upper end surface of the cover plate and the side plate and the upper surface of the motor housing;

[0016] And / or, a second seal is provided between the positioning core shaft and the stator coil;

[0017] And / or, a third seal is provided between the bottom plate and the lower end surface of the side plate and the lower surface of the motor housing. In this arrangement, the first seal prevents the potting glue from overflowing from the upper end surface of the cover plate and the side plate and the upper end surface of the motor housing, and prevents the cover plate and the upper end surface of the side plate and the upper end surface of the motor from being bonded; the second seal prevents the potting glue from entering the gap between the positioning mandrel and the stator coil, causing difficulty in disassembly; the third seal prevents the potting glue from entering the gap between the bottom plate and the lower end surface of the side plate and the lower surface of the motor housing, causing difficulty in disassembly.

[0018] Furthermore, the first sealing member is an O-ring, a sealing pad or a silicone pad;

[0019] And / or, the second sealing member is an O-ring or a sealing pad or a silicone pad;

[0020] And / or, the third sealing member is an O-ring, a sealing gasket or a silicone gasket.

[0021] Furthermore, the shell also includes an upper cover, which is arranged on the upper part of the cover plate and is provided with a pressurizing hole.

[0022] The utility model embodiment provides a slit glue injection device for a motor. A pressurized hole is set to pressurize the potting glue, so that the potting glue is squeezed into the gap between the stator coil and the motor housing, so that the viscous potting glue can completely fill the gap, thereby avoiding incomplete potting of the potting glue and the presence of bubbles, improving the potting quality, and then improving the heat dissipation performance of the motor, as well as the reliability and life of the motor. On the other hand, a positioning core shaft is set to ensure that the gap between the stator coil and the motor housing is uniform.

[0023] Furthermore, the upper cover is formed with a groove, and the groove is arranged opposite to the opening.

[0024] Furthermore, the pressurizing hole is connected to a gas pressurizing device or a liquid pressurizing device. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A top view of a slit glue injection device for a motor provided in an embodiment of the utility model Figure 1 ;

[0026] Figure 2 for Figure 1 AA section view in;

[0027] Figure 3 Schematic diagram of the explosion structure of a slit glue injection device for a motor provided by an embodiment of the utility model Figure 1 ;

[0028] Figure 4 A top view of a slit glue injection device for a motor provided in an embodiment of the utility model Figure 2 ;

[0029] Figure 5 for Figure 4 BB section view in;

[0030] Figure 6 Schematic diagram of the explosion structure of a slit glue injection device for a motor provided by an embodiment of the utility model Figure 2 ;

[0031] Description of reference numerals:

[0032] 1. stator coil; 2. motor housing; 201. glue overflow hole; 202. gap; 10. bottom plate; 20. cover plate; 210. opening; 30. side plate; 301. air hole; 40. positioning mandrel; 50. adjustment block; 60. upper cover; 601. pressurizing hole. DETAILED DESCRIPTION

[0033] In order to make the above-mentioned purpose, features and advantages of the present invention more obvious and easy to understand, the following is a brief description of the present invention in conjunction with the attached Figure 1-6 The specific embodiments of the present utility model are described in detail.

[0034] In the present invention, the terms "connection", "connected" and the like should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection or an integral structure.

[0035] In the present invention, terms such as "inside", "outside", "upper", and "lower" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on the present invention.

[0036] The utility model provides a slit glue injection device for a motor, see attached Figure 1-3 A slit glue injection device for a motor includes a shell, which includes a bottom plate 10, a cover plate 20 and a side plate 30. The bottom plate 10 and the side plate 30 are connected to form a cavity with an opening, and the cover plate 20 covers the opening. The cavity is used to accommodate a stator coil 1 and a motor housing 2; a positioning mandrel 40 is provided in the cavity, and the bottom end of the positioning mandrel 40 is connected to the bottom plate 10, and the positioning mandrel 40 is used to sleeve the stator coil 1; the cover plate 20 has an opening 210, and the upper end of the positioning mandrel 40 is located in the opening 210. The gap between the opening 210 and the positioning mandrel 40 is used to accommodate potting glue, and the potting glue is used to fill the gap 202 between the stator coil 1 and the motor housing 2; the side plate 30 has an air hole 301, and the air hole 301 is used for vacuuming or exhausting. The air hole 301 is connected to the glue overflow hole 201 of the motor housing 2, and the glue overflow hole 201 is connected to the gap 202 and the cavity.

[0037] It should be noted that the cover plate 20 is detachably connected to the side plate 30; the bottom plate 10 is detachably connected to the side plate 30; and the positioning mandrel 40 is detachably connected to the bottom plate 10. This arrangement facilitates the removal of the potted stator coil 1 and the motor housing 2.

[0038] It should be noted that the lower surface of the cover plate 20 can abut against the upper end surface of the side plate 30 and at least a portion of the upper surface of the motor housing 2 .

[0039] It should be noted that, by providing a positioning core shaft 40 , the horizontal position of the stator coil 1 is positioned to ensure that the gap 202 between the stator coil 1 and the motor housing 2 is uniform.

[0040] Therefore, the embodiment of the utility model provides a slit glue injection device for a motor. On the one hand, vacuum is drawn through the air hole 301, and a glue overflow hole 201 is set to squeeze the potting glue into the gap 202 between the stator coil 1 and the motor housing 2, so that the viscous potting glue can completely fill the gap 202, thereby avoiding incomplete potting of the potting glue and the presence of bubbles, improving the potting quality, and then improving the heat dissipation performance of the motor, as well as the reliability and life of the motor; on the other hand, by setting a positioning core shaft 40, it is ensured that the gap 202 between the stator coil 1 and the motor housing 2 is uniform.

[0041] In one embodiment of the present invention, the side plate 30 is made of a transparent material. This arrangement makes it easy to observe whether there is potting glue overflow at the overflow hole 201 and the filling speed of the potting glue, thereby ensuring the completeness of the potting.

[0042] In another embodiment of the present utility model, a sensor is provided at the overflow hole 201, and the sensor is used to detect whether there is potting glue overflowing from the overflow hole 201. Such a configuration ensures the completeness of potting.

[0043] In the embodiment of the utility model, there are multiple glue overflow holes 201, and they are arranged at intervals along the circumferential direction of the motor housing 2. Preferably, the glue overflow holes 201 are arranged at equal intervals along the circumferential direction of the motor housing 2.

[0044] In the embodiment of the utility model, an adjustment block 50 is provided in the cavity. The adjustment block 50 is provided on the bottom plate 10 and sleeved on the positioning core shaft 40 . The adjustment block 50 is used to support the stator coil 1 and adjust the position of the stator coil 1 .

[0045] See attached Figure 2 In the embodiment of the utility model, the opening 210 is a tapered hole, the upper opening of the tapered hole is large and the lower opening is small. In this way, the tapered hole provides a guide for the potting glue.

[0046] In the embodiment of the utility model, a first seal is arranged between the upper end faces of the cover plate 20 and the side plate 30 and the upper surface of the motor housing 2; and / or, a second seal is arranged between the positioning core shaft 40 and the stator coil 1; and / or, a third seal is arranged between the lower end faces of the bottom plate 10 and the side plate 30 and the lower surface of the motor housing 2. In this arrangement, the first seal prevents the potting glue from overflowing from the upper end faces of the cover plate 20 and the side plate 30 and the upper end face of the motor housing 2, and prevents the upper end faces of the cover plate 20 and the side plate 30 and the upper end face of the motor from being bonded; the second seal prevents the potting glue from entering the gap between the positioning core shaft 40 and the stator coil 1, causing difficulty in disassembly; the third seal prevents the potting glue from entering the gap between the lower end faces of the bottom plate 10 and the side plate 30 and the lower surface of the motor housing 2, causing difficulty in disassembly.

[0047] In the embodiment of the utility model, the first sealing member is an O-ring, a sealing pad, or a silicone pad; and / or the second sealing member is an O-ring, a sealing pad, or a silicone pad; and / or the third sealing member is an O-ring, a sealing pad, or a silicone pad.

[0048] See attached Figure 4-6 In the embodiment of the utility model, the shell further includes an upper cover 60 , which is disposed on the upper portion of the cover plate 20 , and the upper cover 60 is provided with a pressurizing hole 601 .

[0049] Therefore, the embodiment of the utility model provides a slit glue injection device for a motor, which realizes pressurization of the potting glue by setting a pressurizing hole 601, so that the potting glue is squeezed into the gap 202 between the stator coil 1 and the motor housing 2, so that the viscous potting glue can completely fill the gap 202, thereby avoiding incomplete potting of the potting glue and the presence of bubbles, improving the potting quality, and then improving the heat dissipation performance of the motor, as well as improving the reliability and life of the motor.

[0050] In the embodiment of the utility model, the upper cover 60 is formed with a groove, and the groove is arranged opposite to the opening 210 .

[0051] In the embodiment of the utility model, the pressurizing hole 601 is connected to a gas pressurizing device or a liquid pressurizing device.

[0052] Although the utility model is disclosed as above, the utility model is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the utility model. Therefore, the protection scope of the utility model shall be subject to the scope defined by the claims.

Claims

1. A slit glue injection device for a motor, characterized in that: The motor comprises a housing, wherein the housing comprises a bottom plate (10), a cover plate (20) and a side plate (30); the bottom plate (10) and the side plate (30) are connected to form a cavity with an opening, the cover plate (20) covers the opening, and the cavity is used to accommodate a stator coil (1) and a motor housing (2); A positioning mandrel (40) is provided in the cavity, the bottom end of the positioning mandrel (40) is connected to the bottom plate (10), and the positioning mandrel (40) is used to sleeve the stator coil (1); The cover plate (20) has an opening (210), the upper end of the positioning mandrel (40) is located in the opening (210), and the gap between the opening (210) and the positioning mandrel (40) is used to accommodate potting glue, and the potting glue is used to fill the gap (202) between the stator coil (1) and the motor housing (2); The side plate (30) has an air hole (301), the air hole (301) is used for vacuuming or exhausting, the air hole (301) is connected to the glue overflow hole (201) of the motor housing (2), and the glue overflow hole (201) is connected to the gap (202) and the cavity.

2. The slit glue injection device for a motor according to claim 1, characterized in that: The side plate (30) is made of a transparent material.

3. The slit glue injection device for a motor according to claim 1, characterized in that: A sensor is provided at the glue overflow hole (201), and the sensor is used to detect whether the potting glue overflows from the glue overflow hole (201); And / or, there are a plurality of the glue overflow holes (201), which are arranged at intervals along the circumferential direction of the motor housing (2).

4. The slit glue injection device for a motor according to claim 1, characterized in that: An adjustment block (50) is provided in the cavity. The adjustment block (50) is provided on the bottom plate (10) and sleeved on the positioning core shaft (40). The adjustment block (50) is used to support the stator coil (1) and adjust the position of the stator coil (1).

5. The slit glue injection device for a motor according to claim 1, characterized in that: The opening (210) is a tapered hole, the upper end of the tapered hole has a larger opening and the lower end of the tapered hole has a smaller opening.

6. The slit glue injection device for a motor according to claim 1, characterized in that: A first sealing member is provided between the upper end surfaces of the cover plate (20) and the side plate (30) and the upper surface of the motor housing (2); And / or, a second sealing member is provided between the positioning core shaft (40) and the stator coil (1); And / or, a third sealing member is provided between the bottom plate (10), the lower end surface of the side plate (30), and the lower surface of the motor housing (2).

7. The slit glue injection device for a motor according to claim 6, characterized in that: The first sealing member is an O-ring, a sealing pad or a silicone pad; And / or, the second sealing member is an O-ring or a sealing pad or a silicone pad; And / or, the third sealing member is an O-ring, a sealing gasket or a silicone gasket.

8. The slit glue injection device for a motor according to claim 1, characterized in that: The housing further comprises an upper cover (60), wherein the upper cover (60) is arranged on the upper part of the cover plate (20), and the upper cover (60) is provided with a pressurizing hole (601).

9. The slit glue injection device for a motor according to claim 8, characterized in that: The upper cover (60) is formed with a groove, and the groove is arranged opposite to the opening (210).

10. The slit glue injection device for a motor according to claim 8, characterized in that: The pressurizing hole (601) is connected to a gas pressurizing device or a liquid pressurizing device.

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