TWI727339B - Driving device and assembling method thereof - Google Patents

Abstract

A driving device includes a stator module, a rotor module, a stress resistant resin, an upper case and a lower case. The rotor module is disposed in the stator module, and adapted to rotate relative to the stator module. The stress resistant resin covers at least a portion of the stator module, and a part of the stress resistant resin is exposed. The upper case is disposed at an upper side of the stress resistant resin and has a through hole. A rotating rod passes through the through hole. The lower case is disposed at a lower side of the stress resistant resin. Two bearing members are sleeved to the rotating rod, disposed between the rotating rod and the upper case and between the rotating rod and the lower case.

Description

Driving device and assembling method thereof

The present invention relates to a driving device and an assembling method thereof, and more particularly to a driving device with good structural strength and low weight and an assembling method thereof.

Generally speaking, a heating device (such as an oven) has a heatable cavity. In order to make the temperature in the cavity uniform, a fan and other objects are arranged in the cavity, and the fan is driven by a motor arranged outside the pressure oven. Pressure may be transmitted to the motor when the pressure oven is in operation. At present, the designer will set the shaft seal at the part where the rotating shaft of the motor passes through the cavity to isolate the high pressure difference between the inside and outside of the cavity. However, the shaft seal is easily worn out due to long-term temperature and pressure differences.

The present invention provides a driving device, which uses a pressure-resistant colloid as at least a part of the side shell to provide good structural strength and reduce weight.

The present invention provides a method for assembling a driving device, which can assemble the above-mentioned The drive unit.

A driving device of the present invention includes a stator module, a rotor module, a pressure-resistant gel, an upper cover and a lower cover. The rotor module is arranged in the stator module and is suitable for rotating relative to the stator module. The pressure-resistant colloid covers at least part of the stator module, and at least part of the pressure-resistant colloid is exposed. The upper cover is arranged on the upper side of the pressure-resistant plastic body and has a through hole, and the rotating shaft of the rotor module passes through the through hole. The lower cover is arranged on the lower side of the pressure-resistant colloid. The two bearing pieces are sleeved on the rotating shaft and between the rotating shaft and the upper cover and between the rotating shaft and the lower cover.

In an embodiment of the present invention, the outer surface of the entire pressure-resistant colloid mentioned above is exposed.

In an embodiment of the present invention, the above-mentioned driving device further includes a side shell, which includes a hole, and the side shell covers a part of the outer surface of the pressure-resistant gel, and a part of the pressure-resistant gel is exposed outside the hole.

In an embodiment of the present invention, the aforementioned driving device further includes a temperature sensor and a transmission line. The temperature sensor is thermally coupled to the pressure-resistant gel. The transmission line is connected to the temperature sensor and passes through the hole.

In an embodiment of the present invention, the above-mentioned upper cover is fixed to the upper side of the side shell, and the lower cover is fixed to the lower side of the side shell.

In an embodiment of the present invention, the above-mentioned pressure-resistant plastic body is coated on the outside of the stator module, so that the stator module is not covered by the pressure-resistant plastic body only on the inner surface, and the inner surface of the stator module is flush with the stator module. Press the inner surface of the colloid.

In an embodiment of the present invention, the above-mentioned driving device further includes a side shell, a part surrounding the stator module, and the pressure-resistant gel coats another part of the stator module.

In an embodiment of the present invention, the aforementioned side shell surrounds the central part of the stator module, and the pressure-resistant glue covers both ends of the stator module.

In an embodiment of the present invention, the above-mentioned pressure-resistant colloid and the covered stator module form a pressure-resistant cavity, and the pressure-resistant cavity is adapted to withstand a pressure greater than or equal to 0 atmospheres and less than 100 atmospheres.

An assembling method of a driving device of the present invention includes: placing a stator module in an inner cavity of a mold, the mold has an opening communicating with the inner cavity and includes a filler in the inner cavity, and the filler is filled in the stator module. The enclosed space; fill the pressure-resistant gel in fluid state into the cavity from the opening of the mold; cure the pressure-resistant gel, and the pressure-resistant gel covers at least part of the stator module; fix the stator module and the resistance of the stator module Demoulding the pressure-resistant plastic body; arrange the rotor module in the space surrounded by the stator module; and cover the two bushings on the shaft of the rotor module, and arrange the upper cover and the lower cover on the upper side of the pressure-resistant plastic body, respectively On the lower side, two of the bearing parts are between the rotating shaft and the upper cover and between the rotating shaft and the lower cover. The upper cover has a through hole, the rotating shaft of the rotor module passes through the through hole, and at least part of the pressure-resistant gel is exposed.

Based on the above, the driving device of the present invention wraps at least part of the stator module with the pressure-resistant colloid, and at least part of the pressure-resistant colloid is exposed. In other words, at least part of the pressure-resistant gel can be used as the housing of the driving device, which can provide a good pressure-resistant effect of the driving device and save cost and weight.

In order to make the above-mentioned features and advantages of the present invention more comprehensible, the following specific embodiments are described in detail in conjunction with the accompanying drawings.

10: Mould

12: Inner cavity

14: opening

16: Filler

100, 100a, 100b: drive unit

110, 110a, 110b: shell

112, 112a: upper cover

114, 114a: lower cover

116, 116b: side shell

118: Hole

120: Rotor module

122: shaft

124: Lining Pieces

130: Stator module

132: Coil

134: Electronic iron core

140, 140b: pressure-resistant colloid

150: temperature sensor

152: Transmission line

FIG. 1 is a schematic diagram of a driving device according to an embodiment of the present invention.

2A to 2F are schematic diagrams of the assembly process of the driving device of FIG. 1.

Fig. 3 is a schematic diagram of a driving device according to another embodiment of the present invention.

Fig. 4 is a schematic diagram of a driving device according to another embodiment of the present invention.

FIG. 1 is a schematic diagram of a driving device according to an embodiment of the present invention. Please refer to FIG. 1, the driving device 100 of this embodiment uses a motor as an example, such as a motor applied to a pressure oven, but the type and application field of the driving device 100 are not limited by this.

As shown in FIG. 1, the driving device 100 includes a stator module 130, a rotor module 120, a pressure-resistant plastic body 140, an upper cover 112 and a lower cover 114. The rotor module 120 is disposed in the stator module 130 and is suitable for rotating relative to the stator module 130. The pressure-resistant gel 140 covers at least a part of the stator module 130. In this embodiment, the pressure-resistant plastic body 140 covers the outside of the entire stator module 130, so that the inner surface of the stator module 130 is not covered by the pressure-resistant plastic body 140, and the inner surface of the stator module 130 is flush with The inner surface of the pressure-resistant gel 140. Of course, in an embodiment, the pressure-resistant gel 140 can also only cover part of the stator module 130, or/and the inner surface of the stator module 130 can also be higher or lower than the inner surface of the pressure-resistant gel 140.

In addition, at least part of the pressure-resistant gel 140 of the driving device 100 is exposed. As shown in FIG. 1, in this embodiment, the outer surface of the entire pressure-resistant colloid 140 is exposed, that is, the driving device 100 will not have additional components covered on the outer surface of the pressure-resistant colloid 140. As a part of the housing 110, it can withstand pressure and reduce weight.

In this embodiment, the upper cover 112 is disposed on the upper side of the pressure-resistant gel 140 and has a through hole, and the rotating shaft 122 of the rotor module 120 passes through the through hole. If the driving device 100 is applied to a pressure oven, it can be connected to a fan in the pressure oven through the rotating shaft 122. Of course, the application scope of the driving device 100 is not limited by this. The lower cover 114 is disposed on the lower side of the pressure-resistant gel 140. The two bearing members 124 are sleeved on the rotating shaft 122 and between the rotating shaft 122 and the upper cover 112 and between the rotating shaft 122 and the lower cover 114. The upper cover 112 and the lower cover 114 are fixed to the upper side and the lower side of the pressure-resistant plastic body 140, for example, by means of locking, snapping, or bonding, and jointly serve as the housing 110, but the upper cover 112 and the lower cover 114 are fixed to the pressure-resistant plastic body 140 Do not use this as a restriction. The material of the upper cover 112 and the lower cover 114 is, for example, metal, but it is not limited thereto.

It is worth mentioning that, in this embodiment, the pressure-resistant colloid 140 may be, for example, a flame-resistant thermally conductive epoxy resin. The flame-resistant thermally conductive epoxy resin has a tensile strength of about 9850 psi and a compressive strength. About 15000psi, and can withstand negative pressure, normal pressure and high pressure. Therefore, in this embodiment, the pressure-resistant gel 140 and the covered stator module 130 can jointly form a pressure-resistant cavity, and the pressure-resistant cavity is suitable for withstanding a pressure greater than 0 atmosphere and less than 100 atmosphere. The pressure that the pressure-resistant cavity can bear is greater than the pressure in the pressure oven. If the driving device 100 is applied to a pressure oven, since the stator module 130 of the driving device 100 and the pressure-resistant gel 140 are shared The space enclosed by the same will be connected to the pressure oven. Part of the gas in the pressure oven will enter the space enclosed by the pressure-resistant plastic 140 and the covered stator module 130, so that the pressure-resistant plastic 140 and the covered stator module The space surrounded by the group 130 and the internal space 22 form an equal pressure.

Since the pressure-resistant gel 140 can withstand high pressure and will not be deformed or damaged due to pressure, the space between the pressure-resistant gel 140 and the upper cover 112 and the lower cover 114 can be maintained in a high pressure state. Therefore, there is no need to provide a shaft seal between the rotating shaft 122 of the driving device 100 and the pressure oven in this embodiment, which is quite convenient. The high-pressure-resistant characteristic of the pressure-resistant gel 140 enables the driving device 100 to maintain normal operation under high pressure. Of course, the pressure-resistant gel 140 can also be used under normal pressure or negative pressure. In other words, when the pressure oven is under negative pressure or normal pressure, the pressure-resistant gel 140 can also be correspondingly under negative pressure or normal pressure, while still maintaining good structural strength.

In addition, if the driving device 100 is applied to a pressure oven, the driving device 100 is arranged outside the pressure oven. Therefore, the outer surface of the pressure-resistant gel 140, the outer surface of the upper cover 112 and the outer surface of the lower cover 114 are under normal pressure. Since the pressure-resistant colloid 140 can withstand high pressure and pressure difference, the inner surface of the pressure-resistant colloid 140 is subjected to high pressure, and the outer surface of the pressure-resistant colloid 140 is at normal pressure. The pressure-resistant colloid 140 can still have sufficient rigidity and can protect the covered The stator module 130.

In addition, in this embodiment, the heat distortion temperature of the flameproof thermally conductive epoxy resin is about 155°C, and the operating temperature can be between -60°C and 200°C. The above characteristics can withstand the high temperature of the driving device 100 during operation or the temperature transmitted from the pressure oven. In addition, the thermal conductivity (Thermal Conductivity) of the flameproof thermally conductive epoxy resin is, for example, 15 btu*in/hr*ft ² *℉, so that the heat generated by the driving device 100 during operation or the heat transferred from the pressure oven can be Quickly drain to the outside world. In this embodiment, since the outer surface of the entire pressure-resistant plastic body 140 is exposed, the heat of the driving device 100 during operation can be quickly transmitted to the outside, and the user can easily test the pressure-resistant plastic body 140 and even the stator module. 130 temperature to facilitate monitoring.

Furthermore, since the material baked by the pressure oven may contain chemical volatiles, under such heating conditions and various factors of the environment where the motor is located (such as volatile particles, seaside environment, etc.), it may be connected to the heating device The motor causes adverse effects, making the motor unable to operate stably for a long time. In this embodiment, the material selected for the pressure-resistant gel 140 of the driving device 100 can be corrosion-resistant, waterproof, and dust-proof, and can be suitable for the above-mentioned harsh use environment. In addition, the flame-proof thermally conductive epoxy resin used in this embodiment has passed the UL94 V-0 test, has good flame retardancy, and has an insulation constant of about 5.6 at 60 Hz, and has good circuit confidentiality.

In addition, the flame-proof thermal conductive epoxy resin used in this embodiment has a Shore D hardness of about 90, and the pressure-resistant gel 140 has a high hardness, which can protect the covered stator module 130 and the stator module. The rotor module 120 inside 130 serves as a good housing material. Compared with the conventional motor which uses a metal shell to cover the outer side of the stator module 130, it has a large weight and a high cost. The pressure-resistant gel 140 of the driving device 100 of this embodiment can have the advantages of small weight and low cost.

Of course, the material of the pressure-resistant colloid 140 is not limited to this, as long as the colloidal curing material with high thermal conductivity, high hardness and high pressure resistance can be used as the material of the pressure-resistant colloid 140.

2A to 2F are schematic diagrams of the assembly process of the driving device of FIG. 1. The assembling method of the driving device of this embodiment includes the following steps. First, referring to FIG. 2A, a stator module 130 is provided. The stator module 130 includes, for example, an electronic iron core 134 having a hollow cylindrical shape. It is made up of multiple electromagnetic steel sheets, but it is not limited by this. The electronic iron core 134 has a stator slot, and insulating paper (not shown) is placed in the stator slot, and then a wire with an insulating layer is wound into a coil 132 in the stator slot to form a stator module 130.

Then, as shown in FIG. 2B, the stator module 130 is placed in the inner cavity 12 of the mold 10. The mold 10 has an opening 14 communicating with the inner cavity 12 and includes a filler 16 located in the inner cavity 12, and the filler 16 is positioned In the space surrounded by the stator module 130, the pressure-resistant gel 140 in the subsequent fluid state is prevented from flowing into the space surrounded by the stator module 130.

Next, as shown in FIG. 2C, the pressure-resistant gel 140 in a fluid state is filled into the cavity 12 from the opening 14 of the mold 10. Thereafter, as shown in FIG. 2D, the pressure-resistant gel 140 is cured, and the pressure-resistant gel 140 covers at least a part of the stator module 130. Then, the stator module 130 and the pressure-resistant glue 140 fixed to the stator module 130 are demolded.

Furthermore, as shown in FIG. 2E, the rotor module 120 is arranged in the space surrounded by the stator module 130. Finally, as shown in FIG. 2F, two bushings 124 are sleeved on the rotating shaft 122 of the rotor module 120, and the upper cover 112 and the lower cover 114 are respectively arranged on the upper and lower sides of the pressure-resistant colloid 140, of which two bushings The member 124 is located between the rotating shaft 122 and the upper cover 112 and between the rotating shaft 122 and the lower cover 114. The upper cover 112 has a through hole. The rotating shaft 122 of the rotor module 120 passes through the through hole, and at least part of the pressure-resistant gel 140 For exposure. In this embodiment, the pressure-resistant plastic body 140 covers the entire outer side of the stator module 130, and the outer surface of the entire pressure-resistant plastic body 140 is exposed as a part of the housing 110 (FIG. 1 ).

It is worth mentioning that the assembling method of this embodiment is not limited to assembling the driving device 100 as shown in FIG. 1, and driving devices of other embodiments can also be assembled, which is not limited to the above.

Other aspects of the driving device will be introduced below. Components that are the same or similar to those in the previous embodiment are represented by the same or similar symbols, and will not be repeated here, and only the main differences will be described.

Fig. 3 is a schematic diagram of a driving device according to another embodiment of the present invention. Please refer to FIG. 3, the main difference between the driving device 100a of FIG. 3 and the driving device 100 of FIG. 1 is that, in FIG. 1, the housing 110 includes an upper cover 112, a lower cover 114, and a pressure-resistant gel 140, and the entire pressure-resistant gel 140 The outer surface is exposed. In FIG. 3, the driving device 100a further includes a side shell 116, which covers a part of the outer surface of the pressure-resistant gel 140, and only exposes the uncovered pressure-resistant gel 140.

In addition, in this embodiment, the upper cover 112 a is fixed to the upper side of the side shell 116, and the lower cover 114 a is fixed to the lower side of the side shell 116. The material of the side shell 116, the upper cover 112a and the lower cover 114a is, for example, metal, and the manner in which the upper cover 112a and the lower cover 114a are fixed to the side shell 116 is, for example, locked or snapped, which is not limited thereto.

In addition, in this embodiment, the side shell 116 includes a hole 118, and a portion of the pressure-resistant gel 140 is exposed outside the hole 118. The side shell 116 only covers a part of the outer surface of the pressure-resistant gel 140 due to the hole 118, so it has a completeness compared to the conventional motor. With a metal side shell, the weight of the driving device 100a of this embodiment can be small, the cost is low, and the strength is good. In addition, the outer surface of the partial pressure-resistant gel 140 is exposed, so that heat can be directly transferred.

In addition, in this embodiment, the driving device 100a further optionally includes a temperature sensor 150 and a transmission line 152. The temperature sensor 150 can be attached to the pressure-resistant gel 140 or embedded in the pressure-resistant gel 140 to be thermally coupled to the pressure-resistant gel 140. The transmission line 152 is connected to the temperature sensor 150 and passes through the hole 118 to be connected to the outside.

Fig. 4 is a schematic diagram of a driving device according to another embodiment of the present invention. Referring to FIG. 4, the main difference between the driving device 100b of FIG. 4 and the driving device 100a of FIG. 3 is that, in this embodiment, the side shell 116b surrounds the part of the stator module 130, and the pressure-resistant gel 140b covers the stator module 130. The other part. More specifically, the side shell 116b surrounds the central part of the stator module 130, and the pressure-resistant gel 140b covers both ends of the stator module 130. Generally speaking, the two ends of the stator module 130 will expose the coil 132, which is relatively hot during operation. The designer can also wrap the two parts with a pressure-resistant plastic 140b and expose them directly. Of course, the relative position of the side shell 116b and the pressure-resistant gel 140b is not limited by this.

In summary, the driving device of the present invention covers at least part of the stator module with the pressure-resistant gel, and at least part of the pressure-resistant gel is exposed. In other words, at least part of the pressure-resistant gel can be used as the housing of the driving device, which can provide a good pressure-resistant effect of the driving device and save cost and weight.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention. Anyone with ordinary knowledge in the relevant technical field will not depart from the present invention. Within the spirit and scope, some changes and modifications can be made, so the scope of protection of the present invention shall be subject to those defined by the attached patent scope.

100: drive device

110: shell

112: upper cover

114: lower cover

120: Rotor module

122: shaft

124: Lining Pieces

130: Stator module

132: Coil

134: Electronic iron core

140: Pressure-resistant colloid

Claims (10)

A driving device includes: a stator module; a rotor module, which is arranged in the stator module and is suitable for rotating relative to the stator module; a pressure-resistant colloid, which encapsulates at least part of the stator module, and So that the at least part of the stator module is embedded in the pressure-resistant gel, and at least part of the pressure-resistant gel is exposed; the upper cover is arranged on the upper side of the pressure-resistant gel and has a through hole, The rotating shaft of the rotor module passes through the through hole; the lower cover is arranged on the underside of the pressure-resistant colloid; and two bushings are sleeved on the rotating shaft and between the rotating shaft and the Between the upper cover and between the rotating shaft and the lower cover. In the driving device described in item 1 of the scope of patent application, the entire outer surface of the pressure-resistant colloid is exposed. As described in the first item of the patent application, the driving device further includes: a side shell, including a hole, the side shell covers a part of the outer surface of the pressure-resistant colloid, and a part of the hole is exposed outside the hole. Pressure-resistant colloid. As described in item 3 of the scope of patent application, the driving device further includes: a temperature sensor thermally coupled to the pressure-resistant gel; and a transmission line connected to the temperature sensor and passing through the hole . According to the driving device described in claim 3, the upper cover is fixed to the upper side of the side shell, and the lower cover is fixed to the lower side of the side shell. According to the driving device described in item 2 or item 3 of the scope of patent application, the pressure-resistant gel is coated on the outer side of the stator module, so that the stator module is only on the inner surface of the stator module. The pressure-resistant glue body is shielded, and the inner surface of the stator module is flush with the inner surface of the pressure-resistant glue body. As described in the first item of the scope of patent application, the driving device further includes: a side shell surrounding a part of the stator module, and the pressure-resistant colloid covers another part of the stator module. The driving device according to the seventh item of the scope of patent application, wherein the side shell surrounds the central part of the stator module, and the pressure-resistant plastic body covers both ends of the stator module. As for the driving device described in item 1 of the scope of patent application, wherein the pressure-resistant colloid and the covered stator module form a pressure-resistant cavity together, and the pressure-resistant cavity is adapted to withstand a pressure greater than or equal to 0 atmospheres and less than 100 atmospheres. A method for assembling a driving device includes: placing a stator module in an inner cavity of a mold, the mold having an opening communicating with the inner cavity and including a filler located in the inner cavity, and the filler is filled In the space surrounded by the stator module; fill the pressure-resistant gel in a fluid state into the cavity from the opening of the mold; cure the pressure-resistant gel, and the pressure-resistant gel covers at least part of the Of the stator Module; demolding the stator module and the pressure-resistant gel fixed to the stator module; disposing the rotor module in the space surrounded by the stator module; Lining pieces are sleeved on the rotating shaft of the rotor module, and the upper cover and the lower cover are respectively arranged on the upper and lower sides of the pressure-resistant colloid, wherein the two bushings are interposed between the rotating shaft and the upper cover And between the rotating shaft and the lower cover, the upper cover has a through hole, the rotating shaft of the rotor module passes through the through hole, and at least part of the pressure-resistant gel is exposed.

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