Wiring terminal protective cover and liquid pump using same

Abstract

The utility model discloses a wiring terminal protective cover and a liquid pump using the wiring terminal protective cover. The wiring terminal protective cover comprises a main baffle and a plurality of side baffles which are arranged on the circumferential edge side of the main baffle and are suitable for being bent relative to the main baffle. Wherein the plurality of side baffle plates are suitable for being bent towards the same side relative to the main baffle plate, so that the plurality of side baffle plates and the main baffle plate jointly enclose to form a protection chamber for accommodating the wiring terminal; mounting lugs are respectively designed on at least two oppositely arranged side baffles among the plurality of side baffles; and an assembly hole is formed in each mounting lug.

Description

Technical Field

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

[0002] A liquid pump mainly consists of a motor assembly and an impeller assembly used in conjunction. The motor assembly drives the impeller of the impeller assembly to rotate, thereby pumping the liquid inside the impeller chamber of the impeller assembly to the outside of the chamber.

[0003] For liquid pumps, which are widely used in existing technologies, an essential component of the motor assembly is the external wiring terminal. Currently, the external wiring terminals of motors used in liquid pumps such as those in washing machines are exposed. When the external environment is high in heat, humidity, and salt, moisture absorption is severe. If equipment vibration occurs during use, water droplets accumulated in the external environment can drip onto the external wiring terminals, causing short circuits in the motor and corrosion of the wiring contacts.

[0004] Furthermore, for some liquid pumps, the external wiring terminals are generally located on the side of the housing. Essential components of the impeller assembly include inlet and outlet pipes connected to the impeller cavity, which typically extends along the axial direction of the motor assembly. Therefore, from the perspective of liquid pump usage, it is generally placed horizontally along the axial direction of the motor assembly. This means that both the motor assembly housing and the impeller assembly housing partially face the ground or are supported by a mounting bracket. The external wiring terminals are located on the side of the housing. In this case, the inlet pipe is generally connected to the upper part of the impeller assembly housing, while the outlet pipe is connected to the lower part. Therefore, when the impeller assembly needs maintenance, it is usually necessary to disconnect the inlet and outlet pipes from the impeller assembly housing. During this process, residual liquid in the inlet or outlet pipes may drip onto the external wiring terminals, potentially causing electrical leakage.

[0005] To address the above issues, a protective cover needs to be designed at the external wiring terminals to prevent water droplets from entering. Current technology typically uses a waterproof cover that is directly assembled with the outer casing of the motor assembly. This cover is made of the same material as the motor assembly's casing for ease of assembly. However, this increases both the design complexity and production costs. Therefore, to achieve the desired protective effect while simplifying the structure, it is necessary to design a new protective cover for the wiring terminals. Utility Model Content

[0006] The primary objective of this invention is to provide a protective cover for wiring terminals to address the technical problem of simplifying its overall structure.

[0007] The second objective of this invention is to provide a liquid pump that solves the technical problem of simplifying the use of protective covers for terminal blocks.

[0008] The terminal protective cover of this utility model is implemented as follows:

[0009] A terminal block protective cover includes: a main baffle and multiple side baffles disposed on the circumferential edge of the main baffle and adapted to bend relative to the main baffle; wherein

[0010] The multiple side baffles are adapted to be bent toward the same side relative to the main baffle, so that the multiple side baffles and the main baffle together enclose a protective chamber for accommodating the wiring terminals; and

[0011] At least two of the side baffles arranged opposite each other are provided with mounting ears; each mounting ear is formed with an assembly hole.

[0012] In an optional embodiment of this utility model, the main baffle and multiple side baffles are integrally formed.

[0013] In an optional embodiment of this utility model, both the main baffle and the multiple side baffles are made of rigid plastic.

[0014] In an optional embodiment of this utility model, the main baffle adopts a rectangular structure; and

[0015] The main baffle has mounting ears designed on a pair of side baffles that are bent and connected along one of their side edges, and the pair of side baffles with mounting ears are symmetrically arranged to form a mounting baffle.

[0016] In an optional embodiment of this utility model, one of the side baffles of the main baffle, which is perpendicular to the pair of mounting baffles, is adapted to engage with the pair of mounting baffles to form a snap-fit ​​baffle.

[0017] The snap-fit ​​baffle is designed with a corresponding snap-fit ​​structure with a pair of mounting baffles;

[0018] The snap-fit ​​structure includes a snap-fit ​​opening on the snap-fit ​​baffle and a snap-fit ​​block on the mounting baffle that is adapted to snap into the snap-fit ​​opening.

[0019] The liquid pump of this invention is implemented as follows:

[0020] A liquid pump includes: a motor assembly and an impeller assembly for use; wherein

[0021] The motor assembly includes a housing and a stator unit and a rotor unit with wiring terminals disposed within the housing;

[0022] The motor assembly also includes the terminal block protective cover;

[0023] The opening of the protective chamber faces the impeller assembly;

[0024] The mounting ears of the terminal protective cover are used to be clamped and fixed between the stator unit and the housing.

[0025] In an optional embodiment of this utility model, a snap-fit ​​assembly suitable for snap-fit ​​engagement is provided between the stator unit and the outer casing;

[0026] The latching assembly includes a protruding latching platform on the stator unit and a latching hole on the outer casing suitable for the latching platform to be inserted.

[0027] The outer casing is provided with snap-fit ​​tabs having snap-fit ​​holes;

[0028] The assembly hole is adapted to be fitted onto the card platform. When the card platform is assembled with the card hole, the mounting ear is adapted to be clamped between the card and the stator unit.

[0029] In an optional embodiment of this invention, the mounting ear is further provided with an adhesive on the side wall facing the stator unit for bonding and connecting with the outer wall of the stator unit.

[0030] In an optional embodiment of this invention, each of the mounting ears is further provided with a protruding fin on the side wall facing the protective chamber; and

[0031] The fins are adapted to be clamped between the stator unit and the housing.

[0032] In an optional embodiment of this utility model, the side baffle with the mounting ear is further provided with a groove for making way for the outer shell.

[0033] By adopting the above technical solution, the present invention has the following beneficial effects: The terminal protective cover and the liquid pump using it of the present invention form a protective chamber for accommodating the terminal through a main baffle and multiple side baffles located on the circumferential edge of the main baffle and adapted to bend relative to the main baffle. This can form a reliable waterproof effect for multiple different sides of the terminal. While meeting the protection requirements for the terminal, the structure is simpler and easier to process than the protective structure used in the prior art, and the production cost is lower. Attached Figure Description

[0034] Figure 1 This is a first-view structural schematic diagram of the terminal protective cover of this utility model;

[0035] Figure 2 This is a second-view structural schematic diagram of the terminal protective cover of this utility model;

[0036] Figure 3 This is a first-view structural schematic diagram of the liquid pump of this utility model;

[0037] Figure 4 This is a second-view structural schematic diagram of the liquid pump of this utility model;

[0038] Figure 5 This is a third-view structural schematic diagram of the liquid pump of this utility model;

[0039] Figure 6 This is a schematic diagram of the connection structure of the terminal protective cover and stator assembly used in the liquid pump of this utility model.

[0040] In the diagram: Main baffle 11, protective chamber 12, mounting baffle 13, mounting ear 14, assembly hole 141, snap-fit ​​baffle 15, snap-fit ​​block 161, snap-fit ​​groove 162, snap-fit ​​opening 163, double-sided adhesive 17, fin 18, groove 19, wiring terminal 2, stator unit 3, snap-fit ​​platform 31, outer casing 4, snap-fit ​​hole 41, snap-fit ​​piece 42, impeller unit 5. Detailed Implementation

[0041] 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.

[0042] Example 1:

[0043] Please see Figure 1 and Figure 2 As shown, this embodiment provides a terminal block protective cover, including: a main baffle 11 and multiple side baffles disposed on the circumferential edge side of the main baffle 11 and adapted to bend relative to the main baffle 11; wherein the multiple side baffles are adapted to bend relative to the main baffle 11 toward the same side, so that the multiple side baffles and the main baffle 11 together enclose a protective chamber 12 for accommodating the terminal block 2.

[0044] Based on the above structure, and from the perspective of ease of processing, an optional implementation is exemplified where the main baffle 11 and multiple side baffles are integrally formed. Furthermore, both the main baffle 11 and the multiple side baffles are made of rigid plastic, which reduces production costs while still providing adequate protection for the wiring terminals 2. For the main baffle 11 and multiple side baffles made of this material, creases are machined between the multiple side baffles and the main baffle 11, so that when bending the side baffles is required, they can be bent directly along the creases.

[0045] Regarding the shape of the main baffle 11, theoretically there is no absolute limitation. However, from the perspective of ease of processing, referring to the attached drawings, one example is that the main baffle 11 adopts a rectangular structure. In this case, the multiple side baffles are also roughly rectangular in shape. Of course, for each side baffle, in addition to the rectangular structure, some additional structures are added to meet the assembly requirements of the liquid pump. First, at least two oppositely arranged side baffles are designed with mounting ears 14; each mounting ear 14 has an assembly hole 141 formed on it. From the perspective of simplifying the structure, mounting ears 14 are designed only on two oppositely arranged side baffles. In this case, it is preferable that a pair of side baffles with mounting ears 14 are symmetrically arranged to form a pair of mounting baffles 13. The mounting baffles 13 are mainly used to install and fix the terminal protective cover of this embodiment onto the liquid pump. The specific assembly relationship is described in the following embodiment section.

[0046] Furthermore, it is necessary to explain that terminal 2 needs to be connected to a connecting wire during actual use. Therefore, considering that it is convenient to insert one end of the connecting wire into the protective chamber 12 to connect to terminal 2, this embodiment is designed as follows:

[0047] One of the side baffles of the main baffle 11, perpendicular to the pair of mounting baffles 13, is adapted to engage with the pair of mounting baffles 13 to form a snap-fit ​​baffle 15. In this structure, when it is necessary to connect the connecting wire to the terminal 2, it is only necessary to bend the snap-fit ​​baffle 15 away from the main baffle 11, so that an opening is formed at the snap-fit ​​baffle 15 to facilitate the connection wire entering the protective chamber 12. This opening can also provide a certain operating space for the operator's hand. This design can greatly improve the flexibility of the operation process of connecting the connecting wire and the terminal 2.

[0048] To meet the above usage requirements, the snap-fit ​​baffle 15 in this embodiment is designed with a matching snap-fit ​​structure between it and a pair of mounting baffles 13. The snap-fit ​​structure is designed such that when assembling the connecting wire and the terminal 2, the snap-fit ​​structure can be opened, and after the connecting wire and the terminal 2 are assembled, the snap-fit ​​structure can be snapped back on. This improves the waterproof performance and also facilitates the assembly of the connecting wire and the terminal 2. For the connecting wire that has been assembled with the terminal 2, it only needs to extend outward from the opening of the waterproof chamber.

[0049] Here, with reference to the accompanying drawings, an optional embodiment is illustrated. The snap-fit ​​structure includes a snap-fit ​​opening 163 on the snap-fit ​​baffle 15 and a snap-fit ​​block 161 on the mounting baffle 13, adapted to snap into the snap-fit ​​opening 163. The mounting baffle 13 is also provided with a slot 162 for limiting the inner edge of the snap-fit ​​opening 163. When the snap-fit ​​block 161 snaps into the snap-fit ​​opening 163, the inner edge of the snap-fit ​​opening 163 snaps into the slot 162, thereby forming a reliable engagement between the snap-fit ​​block 161 and the snap-fit ​​opening 163. Since the rigid plastic material itself has a certain degree of deformability, when it is necessary to separate the snap-fit ​​block 161 and the snap-fit ​​opening 163, it is only necessary to slightly bend the mounting baffle 13 to deform it, which allows the inner edge of the snap-fit ​​opening 163 to disengage from the slot 162, thus facilitating the snap-fit ​​block 161 to leave the snap-fit ​​opening 163.

[0050] In summary, the terminal block protective cover of this embodiment can be made of low-cost materials, can still provide protection for the terminal block 2, and has a simple overall structure that is flexible and easy to use.

[0051] Example 2:

[0052] Please see Figures 1 to 6 As shown, based on the terminal protective cover of Embodiment 1, this embodiment provides a liquid pump, including: a motor assembly and an impeller assembly used in conjunction; wherein the motor assembly includes a housing 4 and a stator unit 3 and a rotor unit with terminals 2 disposed within the housing 4; the specific structure of the stator unit 3 and the rotor unit is not modified in this embodiment, and mature means that meet the requirements of liquid pump use in the prior art can be adopted, therefore, their specific structure and implementation principle will not be described in detail in this embodiment. The impeller assembly includes an impeller unit 5 connected to the rotor unit and an outer housing (not shown in the figure) covering the outside of the impeller unit 5.

[0053] Furthermore, since the terminal 2 extends outside the housing 4 for easy connection to the connecting wire, the motor assembly in this embodiment also includes a terminal protection cover to provide external protection for the terminal 2 extending outside the housing 4. The terminal protection cover here adopts the structure of Embodiment 1, in which the mounting lug 14 of the terminal protection cover is clamped and fixed between the stator unit 3 and the housing 4.

[0054] More specifically, a snap-fit ​​assembly suitable for engaging is provided between the stator unit 3 and the housing 4. Referring to the accompanying drawings, in one optional embodiment, the snap-fit ​​assembly includes a protruding latch 31 on the stator unit 3 and a latching hole 41 on the housing 4 suitable for the latch 31 to be inserted. The housing 4 is provided with a latching piece 42 forming the latching hole 41. The assembly hole 141 is adapted to be fitted onto the latch 31. When the latch 31 and the latching hole 41 are assembled, the mounting ear 14 is adapted to be clamped between the latching piece 42 and the stator unit 3. In other words, the assembly process between the housing 4 and the stator unit 3 can be used to simultaneously fix the terminal block cover.

[0055] In an alternative embodiment, to improve the ease of operation when assembling the terminal block cover relative to the motor assembly, an adhesive is provided on the side wall of the mounting ear 14 facing the stator unit 3 for bonding with the outer wall of the stator unit 3. The adhesive here can be, for example, but not limited to, double-sided tape 17. Since the terminal block cover in this embodiment can be made of rigid plastic, using double-sided tape 17 is not only convenient but also cost-effective. Furthermore, for the overall fit between the terminal block cover and the liquid pump, the adhesive here only plays a preliminary fixing role; ultimately, reliable fixing of the terminal block cover is achieved by clamping the mounting ear 14 between the housing 4 and the stator unit 3.

[0056] Furthermore, considering the robustness and reliability of the assembly structure formed by the terminal block protective cover and the motor assembly, each mounting ear 14 has a protruding fin 18 on its sidewall facing the protective chamber 12. This fin 18 forms an L-shaped structure with the mounting ear 14, and is suitable for being clamped between the stator unit 3 and the housing 4. Here, the fin 18 utilizes the micro-gap between the stator unit 3 and the housing 4 after assembly to clamp the fin 18. With this structure, each mounting baffle 13 and the motor assembly form two mating structures in different directional dimensions. Moreover, the design of the fin 18, in conjunction with the mounting ear 14, can limit the assembly of the L-shaped corner of the stator unit 3, thereby avoiding the problem of twisting and deformation of the mounting ear 14 due to assembly in only one dimension.

[0057] Based on the above structure, it should be noted that the side baffle with mounting ears 14 also has a groove 19 for accommodating the outer casing 4. It should be explained that the design of the groove 19 increases the bending height of the side baffle with mounting ears 14, i.e., the mounting baffle 13, relative to the main baffle 11. Thus, when the liquid pump is arranged horizontally along the axial direction of the motor assembly, the increased waterproof area of ​​the mounting baffle 13 enhances its waterproof effect. In other words, theoretically, if the groove 19 were not designed here, interference between the mounting baffle 13 and the outer casing 4 could be avoided by reducing the bending height of the overall mounting baffle 13 relative to the main baffle 11.

[0058] Furthermore, it should be noted that, based on the terminal protective cover of Embodiment 1, the opening of the protective chamber 12 faces the impeller assembly; considering the perspective of the liquid pump being horizontally positioned along the axial direction of the motor assembly (participating in... Figure 3 As shown), the terminal protective cover is located beside the impeller assembly, and a pair of mounting baffles 13 provide protection above and below the terminal 2, respectively. This design avoids interference issues when assembling the outer housing of the impeller assembly and the outer housing 4 of the motor assembly. Furthermore, a seamless fit between the mounting baffles 13 and the outer housing of the impeller assembly is not required. In this structure, when the inlet and / or outlet pipes connected to the outer housing of the impeller assembly need to be disassembled, water will also be affected by the mounting baffles 13. The baffle 3 prevents water from dripping directly onto terminal 2, and the protective wall chamber has a certain depth (the depth here mainly refers to the vertical dimension between the main baffle 11 and the outer shell of the impeller assembly). Even if water flows into the gap between the mounting baffle 13 above terminal 2 and the outer shell of the impeller assembly, under the action of gravity, the water flows downhill and will also flow out from the gap between the mounting baffle 13 below terminal 2 and the outer shell of the impeller assembly. Therefore, the water will not drip directly onto terminal 2.

[0059] Based on the above structure, and still considering the perspective of the liquid pump being placed horizontally along the axial direction of the motor assembly, the clamping baffle 15 is located on the side where the connecting wire is located. This allows the connecting wire to be assembled with the terminal 2 through the mutual bending between the clamping baffle 15 and a pair of mounting baffles 13. It is also necessary to note that the overall size of the side baffle located on the opposite side of the clamping baffle 15 is designed based on the outer shell 4 of the motor assembly. That is, the size of the side baffle should not be too large to allow for clearance in the outer shell 4 of the motor assembly. Given the perspective of the liquid pump being placed horizontally along the axial direction of the motor assembly, water is unlikely to flow laterally from the side baffle into the protective chamber 12. Therefore, the design precision requirement for this side baffle is low; it is sufficient for it to roughly contact and fit with the outer wall of the outer shell 4 of the motor assembly, or for it to have a small gap, to meet the usage requirements of this embodiment.

[0060] In summary, for the liquid pump of this embodiment, especially for liquid pumps that are horizontally placed along the axial direction of the motor assembly, external protection can be provided for the wiring terminal 2. When the impeller assembly needs to be repaired, it is usually necessary to separate the inlet and outlet pipes from the outer housing of the impeller assembly. During this process, residual liquid in the inlet or outlet pipes will not drip onto the external wiring terminal 2 and cause leakage. Therefore, the safety and reliability of the overall liquid pump operation are improved.

[0061] 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.

[0062] 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.

[0063] 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.

[0064] 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.

[0065] 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 than "vertical," not that the structure must be completely horizontal, but can be slightly tilted.

[0066] 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. A terminal guard characterized by, include: The main baffle and multiple side baffles located on the circumferential edge of the main baffle and adapted to bend relative to the main baffle; in The multiple side baffles are adapted to be bent toward the same side relative to the main baffle, so that the multiple side baffles and the main baffle together enclose a protective chamber for accommodating the wiring terminals; as well as At least two of the side baffles arranged opposite each other are provided with mounting ears; each mounting ear is formed with an assembly hole.

2. The terminal shield of claim 1, wherein The main baffle and multiple side baffles are integrally formed.

3. The terminal shield according to claim 1 or 2, wherein The main baffle and multiple side baffles are all made of rigid plastic.

4. The terminal shield of claim 1 or 2, wherein, The main baffle adopts a rectangular structure; and The main baffle has mounting ears designed on a pair of side baffles that are bent and connected along one of their side edges, and the pair of side baffles with mounting ears are symmetrically arranged to form a mounting baffle.

5. The terminal shield of claim 4, wherein, One of the side baffles of the main baffle, which is perpendicular to the pair of mounting baffles, is adapted to engage with the pair of mounting baffles to form a snap-fit ​​baffle. The snap-fit ​​baffle is designed with a corresponding snap-fit ​​structure with a pair of mounting baffles; The snap-fit ​​structure includes a snap-fit ​​opening on the snap-fit ​​baffle and a snap-fit ​​block on the mounting baffle that is adapted to snap into the snap-fit ​​opening.

6. A liquid pump characterized by include: The motor assembly and impeller assembly used together; in The motor assembly includes a housing and a stator unit and a rotor unit with wiring terminals disposed within the housing; The motor assembly further includes a terminal protective cover as described in any one of claims 1 to 5; The opening of the protective chamber faces the impeller assembly; The mounting ears of the terminal protective cover are used to be clamped and fixed between the stator unit and the housing.

7. The liquid pump of claim 6, wherein, The stator unit and the outer casing are provided with a snap-fit ​​assembly suitable for snap-fit ​​engagement; The latching assembly includes a protruding latching platform on the stator unit and a latching hole on the outer casing suitable for the latching platform to be inserted. The outer casing is provided with snap-fit ​​tabs having snap-fit ​​holes; The assembly hole is adapted to be fitted onto the card platform. When the card platform is assembled with the card hole, the mounting ear is adapted to be clamped between the card and the stator unit.

8. The liquid pump according to claim 6 or 7, characterized in that The mounting ear is also provided with an adhesive on the side wall facing the stator unit for bonding and connecting with the outer wall of the stator unit.

9. The liquid pump according to claim 6 or 7, characterized in that, Each of the mounting ears also has protruding fins on the side wall facing the protective chamber; and The fins are adapted to be clamped between the stator unit and the housing.

10. The liquid pump of claim 6 or 7, wherein, The side baffle with the mounting ear is also provided with a groove for making way for the outer shell.

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