Electric motors and liquid pumps using them

Abstract

This utility model discloses an electric motor and a liquid pump using the same, comprising: an electric motor module, which includes at least a housing and a coil winding disposed within the housing; the housing includes a detachably fitted shell and a cover located at one end of the shell; the cover has a through hole; a power strip assembly disposed at the end of the cover facing the coil winding, and the power strip assembly is adapted to be electrically connected to the coil winding; and a power supply assembly, which includes a power cord, a power plug disposed at one end of the power cord, and a voltage conversion plug disposed at the other end of the power cord; wherein the voltage conversion plug is adapted to be partially inserted into the through hole and electrically connected to the power strip assembly.

Description

Technical Field

[0001] This utility model relates to the field of liquid pump technology, and in particular to an electric motor and a liquid pump using the same. Background Technology

[0002] For motors used in liquid pumps, to adapt to different regional voltage requirements (such as 115V / 230V), a built-in high and low voltage connector assembly is generally adopted. This assembly is usually located on a terminal block inside the motor's rear cover. Operators must use specialized tools (such as an Allen wrench / socket) to remove the fasteners from the rear cover, then open the cover to expose internal live components (including power terminals, capacitors, voltage regulators, etc.) before manually adjusting the connectors to switch voltage. This design is complex, requires specialized personnel, and poses a high risk of electric shock; users cannot operate it safely independently. For example, but not limited to, a motor voltage conversion switch and its application motor disclosed in announcement number CN203607997U, requires removing the rear cover screws and opening the entire cover when switching voltage. Actual research and use have shown that opening the cover completely exposes internal live components, posing a significant safety hazard.

[0003] In response to the above problems, CN106026537B discloses a motor in which the adapter plug can switch voltages without removing the rear cover during use. However, the voltage conversion switch structure used in the motor only has the function of switching voltages and does not have the function of supplying power. It requires an additional terminal block to supply power. Therefore, for motors and liquid pumps using this voltage conversion switch structure, the overall power supply system structure is complex.

[0004] Therefore, for the existing switching structure with voltage conversion function used in the motor of liquid pump, further improvements are needed to the motor structure to balance the convenience of use and the simplification of the overall power supply system structure of the motor. Utility Model Content

[0005] The primary objective of this invention is to provide a motor that addresses the technical problem of balancing the convenience of its voltage conversion operation with the simplification of the overall power supply system structure.

[0006] The second objective of this invention is to provide a liquid pump that solves the technical problem of optimizing the structure of the motor used in it.

[0007] The motor of this utility model is implemented as follows:

[0008] An electric motor, comprising:

[0009] A motor module includes at least a housing and a coil winding disposed within the housing; the housing includes a detachably fitted shell and a cover located at one end of the shell; the cover has a through hole.

[0010] A power strip assembly is disposed on the side of the cover facing the coil winding, and the power strip assembly is adapted to be electrically connected to the coil winding; and

[0011] A power supply assembly includes a power cord, a power plug disposed at one end of the power cord, and a voltage conversion plug disposed at the other end of the power cord; wherein the voltage conversion plug is adapted to be electrically connected to the power strip assembly after being partially inserted into the through hole.

[0012] In an optional embodiment of this utility model, the power strip assembly includes a power strip body and a plurality of terminals disposed on the power strip body.

[0013] In an optional embodiment of this utility model, one of the terminals on the main body of the circuit board is a grounding terminal; and

[0014] Both the housing and the cover are made of metal, and the grounding terminal is connected to the cover via a grounding wire.

[0015] In an optional embodiment of this utility model, the housing is provided with a connector for detachably engaging with the grounding wire;

[0016] The connector and the cover are integrally formed, and one end of the grounding wire is locked to the connector by fasteners.

[0017] In an optional embodiment of this utility model, the voltage conversion plug is designed with seven terminal interfaces; the seven terminal interfaces include two live wire interfaces, one neutral wire interface, two protective ground interfaces, and a pair of interfaces with internal shorting; and

[0018] The power plug is equipped with a live wire terminal, a neutral wire terminal and a protective ground terminal;

[0019] The two live wire interfaces, one neutral wire interface, and two protective ground interfaces of the voltage conversion plug, together with one live wire terminal, one neutral wire terminal, and one protective ground terminal of the power plug, constitute the main power supply circuit.

[0020] In an optional embodiment of this utility model, the main body of the wire plate is an injection molded body; and a connecting part for detachable engagement with the cover is integrally injection molded on the main body of the wire plate.

[0021] In an optional embodiment of this utility model, the side end face of the wire plate body facing away from the coil winding is further provided with an annular boss suitable for at least partial embedding into the through hole; and

[0022] Each terminal of the circuit board body is designed with a wiring identifier on the side facing the coil winding.

[0023] In optional embodiments of this utility model, the through hole is rectangular, and the annular boss is a rectangular structure adapted to form the through hole; and

[0024] The voltage conversion plug has a connector that is adapted to partially extend into a through-hole to be embedded in an annular boss.

[0025] In an optional embodiment of this utility model, a high voltage identifier and a low voltage identifier are respectively provided on a pair of opposite outer wall surfaces of the voltage conversion plug.

[0026] The liquid pump of this invention is implemented as follows:

[0027] A liquid pump includes: the motor.

[0028] By adopting the above technical solution, this utility model has the following beneficial effects: The motor and liquid pump using this utility model do not require disassembly of the motor housing for high-low voltage switching operations; only the voltage conversion plug needs to be plugged in and out. Therefore, the operation requires neither professional personnel nor specialized tools, making it convenient. Furthermore, for the entire motor, by achieving high-low voltage switchable connection and directly establishing a power supply connection, there is no need for an additional power supply structure, simplifying the overall motor circuit system. Attached Figure Description

[0029] Figure 1 This is an exploded view of the motor of this utility model;

[0030] Figure 2 This is an exploded view of the power supply assembly and cover of the motor of this utility model.

[0031] Figure 3 This is a schematic diagram of the structure of the motor cover of this utility model;

[0032] Figure 4 This is an exploded structural diagram of the motor cover and power strip assembly of this utility model.

[0033] Figure 5 This is a first-view structural schematic diagram of the voltage conversion plug for the motor of this utility model;

[0034] Figure 6 This is a second-view structural schematic diagram of the voltage conversion plug for the motor of this utility model;

[0035] Figure 7This is a partial first-view structural schematic diagram of the motor socket assembly of this utility model;

[0036] Figure 8 This is a partial second-view structural schematic diagram of the motor socket assembly of this utility model;

[0037] Figure 9 This is a schematic diagram showing the connection between the high-voltage adapter plug of the motor and the power strip assembly in a high-voltage engagement state according to this utility model.

[0038] Figure 10 This is a circuit diagram showing the high-voltage adapter plug and power strip assembly of the motor of this utility model in a high-voltage engagement state.

[0039] Figure 11 This is a schematic diagram showing the connection between the high-voltage conversion plug of the motor and the power strip assembly in a low-voltage engagement state according to this utility model.

[0040] Figure 12 This is a circuit diagram showing the high-voltage conversion plug of the motor and the power strip assembly of this utility model in a low-voltage engagement state.

[0041] In the diagram: 1. Housing; 2. Cover; 21. Through hole; 22. Connector; 23. Connector; 31. Main body of circuit board; 32. Connector; 33. Grounding terminal; 34. Grounding wire; 35. Annular boss; 36. Terminal block; 4. Power cord; 5. Power plug; 6. Voltage conversion plug; 61. Anti-slip texture; 62. High voltage identifier; 63. Low voltage identifier; 65. Terminal interface. Detailed Implementation

[0042] To make the contents of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0043] Example 1:

[0044] Please see Figures 1 to 11 As shown, this embodiment provides a motor, including: a motor module, a power strip assembly connected to the motor module, and a power supply assembly connected to the power strip assembly.

[0045] Specifically, the motor module includes at least a housing 1, a stator assembly housed within the housing 1, and a rotor assembly used in conjunction with the stator assembly. The stator assembly and rotor assembly can be any mature technology from the prior art, and this embodiment does not absolutely limit their specific structure and implementation principle. It is understood that the stator assembly includes coil windings, which are used to form an electrical connection with the power strip assembly. The housing 1 can also be understood to generally include a detachable shell and a cover 2 located on one side of the shell, thereby facilitating the assembly of the stator assembly and rotor assembly. Therefore, the overall structure of the motor module described above can all be mature and used technologies from the prior art, and this embodiment does not absolutely limit them.

[0046] Based on the above structure, this embodiment provides a through hole 21 on the cover 2. The through hole 21 is designed to connect the two different sides of the cover 2. Based on this, a plug-in assembly is detachably provided on the side of the cover 2 facing the coil winding of the housing 1.

[0047] More specifically, the power strip assembly in this example includes a power strip body 31 and a plurality of terminals 36 disposed on the power strip body 31. Based on this, in one optional embodiment, the power strip body 31 is injection molded; and a connecting portion 32 for detachable engagement with the cover 2 is integrally injection molded on the power strip body 31. The connecting portions 32 are arranged in pairs. Referring to the accompanying drawings, one example of the connecting portion 32 is a connecting hole. Correspondingly, a connecting seat 22 corresponding to the connecting hole can be provided on the cover 2. A locking hole that mates with the connecting hole is pre-set in the connecting seat 22. Thus, by aligning the connecting hole with the locking hole and using, for example but not limited to, screws, the power strip body 31 can be locked onto the cover.

[0048] Based on the above, this embodiment also incorporates the following design: one of the terminals 36 on the main body 31 of the power strip is a grounding terminal 33; and both the housing 1 and the cover 2 are made of metal, with the grounding terminal 33 connected to the cover via a grounding wire 34 to ground the entire motor and ensure safety. Furthermore, by integrating grounding protection design into the power strip assembly, this embodiment simplifies the overall motor structure, thus avoiding the need for a separate grounding structure design. To this end, a connector 23 is provided on the cover for detachable engagement with the grounding wire 34; the connector 23 is integrally formed with the cover, and one end of the grounding wire 34 is secured to the connector 23 with a fastener, which may be, for example, but is not limited to, screws.

[0049] In addition, in an optional implementation, the side end face of the wire board body 31 facing away from the coil winding is provided with an annular boss 35 suitable for at least partially embedding into the through hole 21; and each terminal 36 on the side end face of the wire board body 31 facing the coil winding is designed with a wiring identifier. The design of the wiring identifier facilitates connection with the coil winding, and the wire board assembly can be quickly connected to the motor module to achieve modular installation.

[0050] Based on the above, from the perspective of ease of processing, the through hole 21 can be machined into a rectangle, and the annular boss 35 is a rectangular structure adapted to the through hole 21. With this structure, there is not only a pair of connecting parts 32 between the main body 31 and the cover 2, but also the annular protrusion engaging with the through hole 21, reinforcing the fit between the power strip assembly and the cover 2. Furthermore, the annular protrusion surrounds the circumferential outer layer of multiple terminals 36. Therefore, the design of the annular protrusion can lengthen the terminals 36, increasing the length of the terminals 36 extending towards the voltage conversion plug 6, thereby increasing the mating depth between the terminals 36 and the voltage conversion plug 6. The annular boss 35 provides circumferential protection for the terminals 36, ensuring safety while increasing the contact area between the voltage conversion plug 6 terminals and the power strip assembly terminals, thus improving the reliability and stability of their mating state.

[0051] Next, the power supply assembly will be described, which includes a power cord 4, a power plug 5 disposed at one end of the power cord 4, and a voltage conversion plug 6 disposed at the other end of the power cord 4. The voltage conversion plug 6 has a connector adapted to partially extend into the through hole 21 to be embedded in the annular boss 35, and the connector is adapted to be electrically connected to the power strip assembly. The voltage conversion plug 6 is designed with seven terminal interfaces 65. The seven terminal interfaces 65 include two live wire (L) interfaces, one neutral wire (N) interface, two protective ground (GND) interfaces, and a pair of interfaces that are internally shorted. The power plug 5 is provided with one live wire (L) terminal, one neutral wire (N) terminal, and one protective ground (GND) terminal. The live wire (L) terminal and the neutral wire (N) terminal form a single-phase AC circuit, and the protective ground (GND) terminal provides safety protection. The two live wire (L) interfaces, one neutral wire (N) interface, and two protective ground (GND) interfaces of the voltage conversion plug 6, together with the one live wire (L) terminal, one neutral wire (N) terminal, and one protective ground (GND) terminal of the power plug 5, form the main power supply circuit. This embodiment achieves reliable transmission and safe power supply of single-phase AC power to the motor by connecting the power plug 5 to the matching voltage conversion plug 6 and the power strip assembly.

[0052] Furthermore, it should be noted that the voltage adapter plug 6 in this embodiment has a pair of opposite outer wall surfaces with a high voltage identifier 62 (HIGH V) and a low voltage identifier 63 (LOW V). In view of the anti-slip problem during the insertion and removal of the voltage adapter plug 6, anti-slip textures 61 are designed on the pair of outer wall surfaces of the voltage adapter plug 6 corresponding to the high voltage identifier 62 and the low voltage identifier 63, respectively.

[0053] The following describes in detail, with reference to the accompanying drawings, the two different mating states between the voltage conversion plug 6 and the power strip assembly in this embodiment:

[0054] First, for each terminal 36 on the side of the wire board body 31 facing the coil winding, the wiring identifiers are respectively marked as M1, M2, N1, and N2, where there are two M1s and one for each of the others. M1 and M2 correspond to one set of coils connected to the coil winding, and N1 and N2 correspond to another set of coils connected to the coil winding.

[0055] Secondly, combining Figure 2 From the perspective shown, when the voltage adapter plug 6 is inserted into the power strip assembly with the "HIGH V" mark facing upwards, the internal wiring viewed from the outside directly opposite the cover 2 is as follows: Figure 9 and Figure 10 As shown, winding M1 is connected to the live wire L of power plug 5, winding N2 is connected to the neutral wire N of power plug 5, and winding M2 and winding N1 are respectively connected to a pair of internally shorted interfaces. At this time, winding M2 and winding N1 are connected, and the coil windings are connected in series to a 230V power supply.

[0056] Based on the above, when the motor requires 115V power, simply unplug the voltage converter plug 6, rotate it 180 degrees, and plug it into the power strip assembly. At this point, it is still combined with... Figure 2 From the perspective shown, flip the voltage adapter 6 so that the "LOW V" mark faces upwards (so that the voltage adapter 6 is... Figure 5 (From the perspective of connecting to the power strip assembly), the internal wiring is viewed from the outside, directly facing the cover, as shown in section 2. Figure 11 and Figure 12 As shown, windings M2 and N2 are connected to the live wire L of power plug 5, and M1 is connected to the neutral wire N of power plug 5. Windings M1 and N1 are respectively connected to a pair of internally shorted interfaces, so windings N1 and M1 are simultaneously connected to the neutral wire N of power plug 5. At this time, the windings are connected in parallel to the 115V power supply.

[0057] In summary, different voltages can be achieved by adjusting the voltage adapter plug 6 at a 180-degree angle relative to the power strip assembly. Regardless of whether the voltage adapter plug 6 is inserted in the correct orientation, the cover 2 connects to the protective ground (GND) terminal of the power plug 5 via the terminal block, thus grounding the entire unit. Furthermore, both the power strip assembly and the power supply assembly in this embodiment can be modularly manufactured. Compared to existing motor modules, this facilitates standardized design and manufacturing of parts, and makes maintenance and disassembly / reassembly convenient and efficient. Therefore, only simple design modifications to the cover 2 based on a mature structure are needed to achieve compatibility with the power strip assembly, as the manufacturing difficulty is low and the cost is controllable.

[0058] Example 2:

[0059] Based on the motor of Embodiment 1, this embodiment provides a liquid pump, including the motor of Embodiment 1.

[0060] The above specific embodiments further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above are only specific embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

[0061] In the description of this utility model, it should be understood that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0062] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0063] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0064] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0065] In this invention, unless otherwise expressly specified and limited, "above or below" the first feature may include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on" the first feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the first feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

Claims

1. An electric motor, characterized in that, include: A motor module includes at least a housing and a coil winding disposed within the housing; the housing includes a detachably fitted shell and a cover located at one end of the shell; the cover has a through hole. A power strip assembly is located on the side of the cover facing the coil winding, and the power strip assembly is adapted to be electrically connected to the coil winding. as well as A power supply assembly includes a power cord, a power plug disposed at one end of the power cord, and a voltage conversion plug disposed at the other end of the power cord; wherein the voltage conversion plug is adapted to be electrically connected to the power strip assembly after being partially inserted into the through hole.

2. The motor according to claim 1, characterized in that, The power strip assembly includes a power strip body and multiple terminals disposed on the power strip body.

3. The motor according to claim 2, characterized in that, One of the terminals on the main body of the circuit board is a grounding terminal; and Both the housing and the cover are made of metal, and the grounding terminal is connected to the cover via a grounding wire.

4. The motor according to claim 3, characterized in that, The housing is provided with a connector for detachable engagement with the grounding wire; The connector and the cover are integrally formed, and one end of the grounding wire is locked to the connector by fasteners.

5. The motor according to any one of claims 2 to 4, characterized in that, The voltage conversion plug is designed with seven terminal interfaces; the seven terminal interfaces include two live wire interfaces, one neutral wire interface, two protective ground interfaces, and a pair of interfaces with internal shorting; and The power plug is equipped with a live wire terminal, a neutral wire terminal and a protective ground terminal; The two live wire interfaces, one neutral wire interface, and two protective ground interfaces of the voltage conversion plug, together with one live wire terminal, one neutral wire terminal, and one protective ground terminal of the power plug, constitute the main power supply circuit.

6. The motor according to any one of claims 2 to 4, characterized in that, The main body of the line plate is made of injection molding; and an integral injection molded connection portion for detachable engagement with the cover is formed on the main body of the line plate.

7. The motor according to any one of claims 2 to 4, characterized in that, The side end face of the main body of the wire plate, facing away from the coil winding, is also provided with an annular boss suitable for at least partial embedding into the through hole; and Each terminal of the circuit board body is designed with a wiring identifier on the side facing the coil winding.

8. The motor according to claim 7, characterized in that, The through hole is rectangular, and the annular boss is a rectangular structure adapted to the through hole; and The voltage conversion plug has a connector that is adapted to partially extend into a through-hole to be embedded in an annular boss.

9. The motor according to claim 1, characterized in that, The voltage conversion plug has a high voltage identifier and a low voltage identifier on its two opposite outer surfaces.

10. A liquid pump, characterized in that, include: The motor as described in any one of claims 1 to 9.

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