An outer rotor motor with a relay box

Abstract

This utility model discloses an external rotor motor with an adapter box, including a base, a stator winding disposed on the base, an external rotor rotatably disposed relative to the base, and an adapter box disposed on the base and having an opening slot. An adapter plate is installed in the opening slot. The three first interfaces of the adapter plate are electrically connected to the three-phase lines of the stator winding, and the three-phase lines electrically connected to the three second interfaces of the adapter plate are led out to the outside of the base. The adapter box is filled with insulating sealant. In this technical solution, by setting an adapter box between the base and the stator winding of the external rotor motor, and installing the adapter plate with the welded three-phase lines into the adapter box, and using insulating sealant for sealing, it effectively prevents water vapor from entering the motor and forming water droplets that could cause a short circuit in the adapter plate, thus enhancing the motor's waterproof performance and making the lead wires more secure.

Description

Technical Field

[0001] This utility model relates to the field of motor technology, and in particular to an external rotor motor with an adapter box. Background Technology

[0002] Currently, there are some motors that do not have an internal driver installed, and it is usually necessary to bring out the three-phase wires of the motor through an adapter plate.

[0003] However, for external rotor motors with poor sealing, in some operating environments, moisture can easily enter the motor through the gap between the external rotor and the base. After condensation, water droplets form on the adapter plate, causing a short circuit and affecting the normal operation of the motor. Utility Model Content

[0004] The main purpose of this invention is to propose an external rotor motor with an adapter box, which aims to solve the technical problem that existing motors with adapter plates are prone to moisture ingress, leading to short circuits.

[0005] To achieve the above objectives, this utility model provides an external rotor motor with an adapter box, comprising:

[0006] Base;

[0007] Stator windings disposed on the base;

[0008] An outer rotor rotatably disposed relative to the base; and,

[0009] An adapter box with an opening slot is disposed on the base. An adapter plate is installed in the opening slot. The three first interfaces of the adapter plate are electrically connected to the three-phase lines of the stator winding. The three-phase lines electrically connected to the three second interfaces of the adapter plate are led out to the outside of the base. The adapter box is filled with insulating sealant.

[0010] Optionally, the adapter box is disposed between the base and the stator winding.

[0011] Optionally, the adapter box is fixedly mounted on the base.

[0012] Optionally, the base is provided with a threaded hole, and both the adapter box and the adapter plate are provided with mounting holes corresponding to the threaded hole for fixed connection with screws.

[0013] Optionally, the insulating sealant is applied to at least the first interface and the second interface.

[0014] Optionally, the insulating sealant is poured onto the adapter plate and seals the opening groove.

[0015] Optionally, the base is provided with a through hole for leading three-phase lines to the outside.

[0016] Optionally, the three first interfaces and three second interfaces of the adapter board are electrically connected in a one-to-one correspondence.

[0017] Optionally, the overall structure of the adapter box is arc-shaped.

[0018] Optionally, the arc-shaped adapter box is arranged circumferentially along the base.

[0019] In the technical solution of this utility model, by setting a junction box between the base and the stator winding of the external rotor motor, and installing the junction plate with the welded three-phase wires into the junction box, and using insulating glue to pot it, the water droplets formed after water vapor enters the motor can be effectively prevented from causing a short circuit in the junction plate, thereby enhancing the waterproof performance of the motor and making the lead wires more secure. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0021] Figure 1 This is a perspective structural diagram of an embodiment of a motor with an adapter box provided by this utility model;

[0022] Figure 2 This is a partial structural diagram of an embodiment of a motor with an adapter box provided by this utility model;

[0023] Figure 3 yes Figure 2 Partial structural diagram;

[0024] Figure 4 yes Figure 3 Partial structural diagram;

[0025] Figure 5 yes Figure 3 An exploded view of part of the structure.

[0026] In the diagram: Motor with adapter box - 100, base - 1, threaded hole - 1a, through hole - 1b, column - 11, stator winding - 2, outer rotor - 3, adapter box - 4, opening slot - 4a, adapter plate - 5, first interface - 5a, second interface - 5b, mounting hole - 4b / 5c.

[0027] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0028] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0029] To better describe and illustrate the embodiments of this application, reference may be made to one or more accompanying drawings, but the additional details or examples used to describe the drawings should not be considered as limiting the scope of any of the utility model creation, the embodiments or preferred embodiments of this application, or the preferred methods described herein.

[0030] In the description of this utility model, it should be noted that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate that the device referred to must have a specific orientation or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0032] For external rotor motors with poor sealing, in some operating environments, moisture can easily enter the motor through the gap between the external rotor and the base. After condensation, water droplets form on the adapter plate, which can cause a short circuit and affect the normal operation of the motor.

[0033] In view of this, the present invention proposes a motor with an adapter box. Figure 1-5 For an embodiment of the motor with an adapter box provided by this utility model, please refer to [link / reference]. Figure 1-5 The motor 100 with the adapter box includes a base 1, a stator winding 2, an outer rotor 3, and an adapter box 4.

[0034] Specifically, as in most external rotor motor 100 structures, the base 1 in this embodiment is disc-shaped and has an axially extending column 11. The stator winding 2 is generally fixedly connected to the column 11 of the base 1 by an interference fit. Bearings are provided inside the column 11, and the external rotor 3 rotates relative to the base 1 and the stator winding 2 by connecting the bearings, especially when the stator winding 2 generates a rotating magnetic field, driving the external rotor 3 to rotate. It should be understood that the external rotor 3 is fitted around the outer periphery of the stator winding 2.

[0035] The adapter box 4 is located on the base 1 and inside the motor 100. It can be fixed by snap-fit ​​or threaded connection. The adapter box 4 has an opening slot 4a, within which an adapter plate 5 is installed. The adapter plate 5 has three first interfaces 5a and three second interfaces 5b. The three first interfaces 5a are electrically connected to the stator winding 2 via three-phase lines, and the three second interfaces 5b are connected to the three-phase lines and led out to the outside of the base 1 for electrical connection to the external drive box. To prevent short circuits due to water contact, insulating sealant is filled inside the adapter box 4. It should be noted that, to improve sealing, the outer contour of the adapter plate 5 is adapted to the opening slot 4a to prevent gaps.

[0036] In the technical solution of this utility model, by setting a junction box 4 between the base 1 and the stator winding 2 of the external rotor motor 100, and installing the junction plate 5 with the welded three-phase wires into the junction box 4, and using insulating glue to pot it, the water droplets formed after the water vapor enters the motor 100 are effectively prevented from causing a short circuit in the junction plate 5, thereby enhancing the waterproof performance of the motor 100 and making the lead wires more secure.

[0037] To prevent the adapter box 4 from occupying space inside the motor 100, please refer to [link / reference needed]. Figure 2 In one embodiment of this utility model, the adapter box 4 is disposed in the gap between the base 1 and the stator winding 2, which facilitates installation and wiring by fitting it against the bottom wall of the base 1.

[0038] Further, please refer to Figure 3 In one embodiment of this utility model, the overall structure of the adapter box 4 is arc-shaped, and the arc-shaped adapter box 4 is arranged along the circumference of the base 1. This structure can guide the airflow inside the motor 100 to flow in the circumference, thereby increasing the heat dissipation area inside the motor 100.

[0039] To secure adapter box 4, please refer to [link / reference]. Figure 4 and 5 In one embodiment of this utility model, the adapter box 4 is fixedly installed on the base 1. In a preferred embodiment, the base 1 has a threaded hole 1a, and both the adapter box 4 and the adapter plate 5 have mounting holes 4b and 5c corresponding to the threaded hole 1a. Screws can pass through the mounting holes 5c, 4b, and 1a in sequence to connect, thereby simultaneously fixing the adapter box 4 and the adapter plate 5 inside the adapter box 4 to the base 1.

[0040] To prevent short circuits at the interfaces of the adapter plate 5, in one embodiment of this invention, insulating sealant must be poured onto the first interface 5a and the second interface 5b. In a preferred embodiment, the insulating sealant is poured entirely onto the adapter plate 5, completely sealing the opening slot 4a of the adapter box 4 to prevent moisture from entering the slot.

[0041] To facilitate the connection of the three-phase wires from the second interface 5b to the motor 100, please refer to [link / reference needed]. Figure 4 In one embodiment of this utility model, the base 1 is provided with a through hole 1b, which is located near the adapter box 4 so that the three-phase wires can extend out from the through hole 1b.

[0042] It should be noted that, in one embodiment of this utility model, the adapter plate 5 is a simple circuit board, on which the three first interfaces 5a and the three second interfaces 5b are electrically connected in a one-to-one correspondence. The three phase lines are respectively soldered to the interfaces and extend out of the opening slot 4a, and then electrically connected to the stator winding or driver.

[0043] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0044] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. An external rotor electric machine having a relay box, characterized by, include: Base (1); Stator winding (2) disposed on the base (1); An outer rotor (3) is rotatably disposed relative to the base (1); and, An adapter box (4) is provided on the base (1) and has an opening slot (4a). An adapter plate (5) is installed in the opening slot (4a). The three first interfaces (5a) of the adapter plate (5) are electrically connected to the three-phase lines of the stator winding (2). The three-phase lines electrically connected to the three second interfaces (5b) of the adapter plate (5) are led out to the outside of the base (1). The adapter box (4) is filled with insulating sealant. The adapter box (4) is disposed between the base (1) and the stator winding (2); The adapter box (4) is fixedly installed on the base (1); The insulating sealant is applied to at least the first interface (5a) and the second interface (5b). The insulating sealant is poured onto the adapter plate (5) and seals the opening groove (4a). The outer contour of the adapter plate (5) is adapted to the opening groove (4a) to prevent gaps from forming.

2. The external rotor electric machine with a relay box according to claim 1, characterized in that, The base (1) is provided with a threaded hole (1a), and the adapter box (4) and the adapter plate (5) are provided with mounting holes (4b, 5c) corresponding to the threaded hole (1a) for fixing with screws.

3. The external rotor motor with a relay box according to claim 1, characterized in that, The base (1) is provided with a through hole (1b) through which three phase lines are led out to the outside.

4. The external rotor motor with a relay box according to claim 1, characterized in that, The three first interfaces (5a) and three second interfaces (5b) of the adapter board (5) are electrically connected in a one-to-one correspondence.

5. The external rotor motor with a relay box according to claim 1, characterized in that, The overall structure of the adapter box (4) is arc-shaped.

6. The external rotor electric machine with a relay box according to claim 5, characterized in that, The arc-shaped junction box (4) is arranged circumferentially along the base (1).

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