A wire clamp structure, a stator assembly and a motor

Abstract

The utility model discloses a kind of wire clamp structure, stator assembly and motor, wire clamp structure includes first clamping plate, second clamping plate, connecting assembly and the pressing plate for fixing temperature controller, first clamping plate and second clamping plate are connected by connecting assembly and form power line compression area, pressing plate is connected with first clamping plate;Pressing plate has L type edge protection, one side of L type edge protection abuts against temperature controller side edge, and the other side is tightly pressed the top of temperature controller. For the problem that single edge protection structure cannot prevent temperature controller transverse movement and axial warping simultaneously, the utility model provides two-way constraint by L type edge protection of pressing plate: its vertical edge directly abuts against temperature controller side edge to inhibit transverse movement, transverse edge covers temperature controller top to prevent axial warping, so that temperature controller is in two directional displacement and is limited, to avoid loosening and temperature sensing surface separation, ensure temperature control function reliability.

Description

Technical Field

[0001] This utility model belongs to the field of motor technology, specifically relating to a wire clamp structure, a stator assembly, and a motor. Background Technology

[0002] The reliability of the encapsulated motor temperature controller directly affects the motor's overheat protection function, but existing technologies have significant drawbacks. Some existing technologies use a single-sided protective edge structure to fix the temperature controller, which can only restrict displacement in one direction and cannot simultaneously prevent lateral movement and axial tilting of the temperature controller. This can lead to the temperature controller becoming loose and separating from the sensing surface during handling or vibration, causing temperature control failure. Utility Model Content

[0003] In view of this, the present invention provides a wire clamp structure, a stator assembly and a motor, which solves the technical problem of the failure of the anti-loosening function in traditional encapsulated motor temperature controllers.

[0004] To address the aforementioned problems, according to one aspect of this application, an embodiment of the present invention provides a wire clamp structure, the wire clamp structure including a first clamp plate, a second clamp plate, a connecting assembly, and a pressure plate for fixing a thermostat. The first clamp plate and the second clamp plate are connected by the connecting assembly to form a power cord clamping area, and the pressure plate is connected to the first clamp plate. The pressure plate has an L-shaped protective edge, one side of which abuts against one edge of the thermostat, and the other side presses tightly against the top of the thermostat.

[0005] In some embodiments, the pressure plate has a thermostat outlet for leading out the thermostat power cord.

[0006] In some embodiments, the thermostat outlet is located on the vertical edge side of the L-shaped protective edge.

[0007] In some embodiments, the connecting component includes a buckle and a groove, the buckle being disposed on the first clamping plate or the second clamping plate, the groove being formed on the second clamping plate or the first clamping plate, and the buckle and the groove being matched.

[0008] In some embodiments, the wire clamp structure further includes a positioning component, one end of which is located on the first clamping plate and the other end of which is located on the second clamping plate, so that the first clamping plate and the second clamping plate cooperate.

[0009] In some embodiments, the positioning component includes a matching positioning post and a positioning hole, the positioning post being disposed on the first clamping plate or the second clamping plate, and the positioning hole being formed on the second clamping plate or the first clamping plate.

[0010] In some embodiments, the edge of the first clamping plate has a first notch, and the edge of the second clamping plate has a second notch. When the first clamping plate and the second clamping plate are engaged, the first notch and the second notch engage to form a power cord hole.

[0011] In some embodiments, the pressure plate is integrally formed with the first clamping plate.

[0012] According to another aspect of this application, an embodiment of the present invention provides a stator assembly, the stator assembly including a plastic-encapsulated stator and a wire clamp structure as described above disposed on the plastic-encapsulated stator, the wire clamp structure fixing the power cord assembly through a power cord clamping area before injection molding, and forming an integral structure with the plastic-encapsulated stator after injection molding; the pressure plate is located above the temperature sensing platform of the plastic-encapsulated stator.

[0013] According to another aspect of this application, an embodiment of the present invention provides an electric motor comprising the stator assembly described above.

[0014] Compared with the prior art, the wire clamp structure of this utility model has at least the following beneficial effects:

[0015] The wire clamp structure provided by this utility model includes a first clamp plate, a second clamp plate, a connecting component, and a pressure plate for fixing a thermostat. The first clamp plate and the second clamp plate are connected by the connecting component to form a power cord clamping area. The pressure plate is connected to the first clamp plate. The pressure plate has an L-shaped protective edge. One side of the L-shaped protective edge abuts against one edge of the thermostat, and the other side presses tightly against the top of the thermostat.

[0016] After the power cord is clamped between the first and second clamping plates, the thermostat is embedded in the corner formed by the L-shaped guard edge of the pressure plate and the first clamping plate. The vertical edge of the L-shaped guard edge is close to the side wall of the thermostat to prevent its horizontal movement, while the horizontal edge presses down on the top of the thermostat to prevent it from tilting. The connecting assembly ensures the stability of the first and second clamping plates, so that the thermostat remains in close contact with the stator sensing surface during vibration or transportation. Addressing the problem that a single guard edge structure cannot simultaneously prevent both lateral movement and axial tilting of the thermostat, this invention provides bidirectional constraint through the L-shaped guard edge of the pressure plate: its vertical edge directly abuts against the side edge of the thermostat to suppress lateral movement, while the horizontal edge covers the top of the thermostat to prevent axial tilting. This restricts the thermostat's displacement in both directions, thereby preventing loosening and separation of the sensing surface and ensuring the reliability of the temperature control function.

[0017] The stator assembly provided by this utility model is designed based on the above-mentioned wire clamp structure. Its beneficial effects are the same as those of the above-mentioned wire clamp structure, and will not be repeated here.

[0018] The motor provided by this utility model is designed based on the above-mentioned stator assembly, and its beneficial effects are the same as those of the above-mentioned stator assembly, which will not be repeated here.

[0019] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings. Attached Figure Description

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

[0021] Figure 1 This is a schematic diagram of a wire clamp structure provided in an embodiment of the present utility model;

[0022] Figure 2 This is a front view of a wire clamp structure after it is closed, provided by an embodiment of this utility model;

[0023] Figure 3 This is a schematic diagram of the wire clamp structure after it has been opened, according to an embodiment of this utility model.

[0024] Figure 4 This is a side view of a wire clamp structure provided in an embodiment of this utility model;

[0025] Figure 5 This is a bottom view of a wire clamp structure provided in an embodiment of this utility model;

[0026] Figure 6 This is a schematic diagram of the structure of a wire clamp and a power cord after they are combined, according to an embodiment of this utility model.

[0027] Figure 7 yes Figure 6 A magnified view of a section at point A in the middle;

[0028] Figure 8 This is a schematic diagram of the structure of a stator assembly provided in an embodiment of this utility model;

[0029] Figure 9 This is a partial front view of a stator assembly provided in an embodiment of the present utility model;

[0030] Figure 10 This is a top view of a stator assembly provided in an embodiment of the present utility model;

[0031] Figure 11 This is a bottom view of a stator assembly provided in an embodiment of this utility model.

[0032] in:

[0033] 1. First clamping plate; 11. First notch; 2. Second clamping plate; 21. Second notch; 3. Connecting assembly; 31. Buckle; 32. Groove; 4. Thermostat; 41. Thermostat power cord; 5. Pressure plate; 51. L-shaped edge protector; 52. Thermostat cable outlet; 6. Positioning assembly; 61. Positioning post; 62. Positioning hole; 7. Power cord hole; 8. Plastic-sealed stator; 81. Temperature sensing platform. Detailed Implementation

[0034] To further illustrate the technical means and effects adopted by this utility model to achieve its intended purpose, the specific implementation methods, structures, features, and effects according to this utility model application are described in detail below with reference to the accompanying drawings and preferred embodiments. In the following description, different "an embodiment" or "an embodiment" do not necessarily refer to the same embodiment. Furthermore, specific features, structures, or characteristics in one or more embodiments can be combined in any suitable form.

[0035] In the description of this utility model, it should be clarified that the terms "first," "second," etc., in the specification, claims, and drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence; the terms "vertical," "lateral," "longitudinal," "front," "back," "left," "right," "up," "down," "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing this utility model, and do not mean that the device or element referred to must have a specific orientation or position, and therefore should not be construed as a limitation of this utility model.

[0036] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0037] Example 1

[0038] This embodiment provides a wire clamp structure, such as Figure 1-11As shown, the wire clamp structure includes a first clamping plate 1, a second clamping plate 2, a connecting assembly 3, and a pressure plate 5 for fixing the thermostat 4. The first clamping plate 1 and the second clamping plate 2 are connected by the connecting assembly 3 to form a power cord clamping area. The pressure plate 5 is connected to the first clamping plate 1. The pressure plate 5 has an L-shaped protective edge 51. One side of the L-shaped protective edge 51 abuts against one edge of the thermostat 4, and the other side presses tightly against the top of the thermostat 4.

[0039] The first clamping plate 1 and the second clamping plate 2 form a power cord clamping area through the connecting component 3, and the two are arranged in parallel opposite directions; the pressure plate 5 is vertically connected to the first clamping plate 1 and located on its outer side. The L-shaped guard 51 of the pressure plate 5 is composed of two mutually perpendicular sides, wherein the vertical side abuts against the side edge of the thermostat 4, and the horizontal side covers the top of the thermostat 4; the thermostat 4 is placed in the space between the L-shaped guard 51 of the pressure plate and the first clamping plate 1, and its side wall is in contact with the vertical side of the L-shaped guard 51, and its top is pressed by the horizontal side.

[0040] The first clamping plate 1 and the second clamping plate 2 together clamp the power cord to fix its position; the connecting component 3 maintains the distance between the two clamping plates and prevents misalignment; the thermostat 4 monitors the temperature by contacting the motor stator through the temperature sensing surface; the L-shaped guard 51 of the pressure plate 5 restricts the lateral displacement of the thermostat through the vertical edge and suppresses its axial tilting through the horizontal edge, and the two work together to achieve bidirectional constraint.

[0041] After the power cord is pressed between the first clamping plate 1 and the second clamping plate 2, the thermostat 4 is embedded in the corner formed by the L-shaped guard 51 of the pressure plate and the first clamping plate 1. The vertical edge of the L-shaped guard 51 is close to the side wall of the thermostat 4 to prevent it from moving horizontally, and the horizontal edge presses down on the top of the thermostat 4 to prevent it from tilting up. The connecting assembly 3 ensures that the first clamping plate 1 and the second clamping plate 2 are in a stable position, so that the thermostat 4 is always in close contact with the stator temperature sensing surface during vibration or transportation.

[0042] To address the problem that a single edge protection structure in the background technology cannot simultaneously prevent the thermostat from lateral movement and axial tilting, this embodiment provides bidirectional constraint through the L-shaped edge protection 51 of the pressure plate 5: its vertical edge directly abuts against the side edge of the thermostat 4 to suppress lateral movement, and its horizontal edge covers the top of the thermostat 4 to prevent axial tilting, so that the thermostat 4 is restricted in both directions, thereby avoiding loosening and separation of the temperature sensing surface, and ensuring the reliability of the temperature control function.

[0043] In a specific embodiment, the pressure plate 5 has a thermostat outlet 52 for leading out the power cord of the thermostat 4. The function of the thermostat outlet 52 is to provide a dedicated channel for the thermostat power cord 41, avoiding physical interference between the power cord and the L-shaped protective edge of the pressure plate. By isolating the contact path between the power cord and the protective edge, the power cord is prevented from being squeezed or tangled by the protective edge, thereby eliminating the risk of thermostat displacement or failure of the protective edge restraint function due to external pulling.

[0044] In a specific embodiment, the thermostat outlet 52 is located on the vertical edge side of the L-shaped guard 51.

[0045] Some existing technologies employ a structure where the thermostat is fully enclosed by the top edge, leading to installation difficulties and low production efficiency. Other technologies, while simplifying installation, lack a dedicated cable outlet, causing interference between the thermostat power cable 41 and the edge reinforcement, making it prone to loosening during transportation or vibration. To address this issue, this embodiment specifies that the thermostat cable outlet 52 is located on the vertical edge of the L-shaped edge 51, perpendicular to the side edge of the thermostat 4. This design directly solves the problem in existing technologies where "interference between the edge and the thermostat cable causes the anti-movement edge reinforcement to fail." Specifically, the power cable is led out vertically to the side of the L-shaped edge 51, completely avoiding the area covered by the horizontal pressure plate at the top of the L-shaped edge 51. This eliminates the risk of the L-shaped edge 51 pressing down on the power cable, ensuring that the lateral constraint of the edge on the thermostat 4 is not affected by the power cable.

[0046] In a specific embodiment, the connecting component 3 includes a buckle 31 and a groove 32. The buckle 31 is disposed on the first clamping plate 1 or the second clamping plate 2, and the groove 32 is formed on the second clamping plate 2 or the first clamping plate 1. The buckle 31 and the groove 32 are matched.

[0047] The buckle 31 is set on the mating surface of the first clamping plate 1 or the second clamping plate 2, and the groove 32 is opened at the corresponding position of the other clamping plate (the second clamping plate 2 or the first clamping plate 1). The buckle 31 is a protruding structure, and the groove 32 is a recessed structure that matches the shape of the buckle 31. The two are coaxially aligned along the closing direction of the clamping plates.

[0048] When the first clamping plate 1 and the second clamping plate 2 are closed, the buckle 31 is pressed into the groove 32, and the side wall of the groove 32 and the circumferential surface of the buckle 31 form an interference fit; the inclined surface at the front end of the buckle 31 guides it to slide into the groove 32 until the base of the buckle 31 abuts against the locking surface of the groove 32, thereby achieving self-locking fixation.

[0049] The engagement of buckle 31 and groove 32 creates a bidirectional constraint effect: along the opening and closing direction of the clamping plate, the engagement between the base of buckle 31 and the locking surface of groove 32 prevents the clamping plate from separating; along the horizontal direction, the interference fit between the circumferential surface of buckle 31 and the side wall of groove 32 suppresses the relative displacement of the clamping plate, ensuring the stability of the power cord clamping area and preventing external forces from causing the clamping plate to spring open or become misaligned.

[0050] In a specific embodiment, the wire clamp structure further includes a positioning component 6, one end of which is located on the first clamping plate 1 and the other end of which is located on the second clamping plate 2, so that the first clamping plate 1 and the second clamping plate 2 cooperate.

[0051] The two ends of the positioning component 6 are fixed to the mating surfaces of the first clamping plate 1 and the second clamping plate 2, respectively, and its main body extends perpendicularly to the plane of the clamping plate. When the first clamping plate 1 and the second clamping plate 2 are closed, the positioning component 6 passes through the two clamping plates to form a rigid connection. Its two end faces are flush with the outer surfaces of the first clamping plate 1 and the second clamping plate 2, respectively, and there is no relative displacement between the side of the component and the contact surface of the clamping plate.

[0052] The positioning component 6 is used to maintain the relative positional accuracy of the first clamping plate 1 and the second clamping plate 2, and to prevent horizontal misalignment during assembly from causing damage to the power cord or displacement of the clamping area. Unlike the buckle 31 and groove 32 of the connecting component 3, the positioning component 6 only provides alignment constraints between the clamping plates and does not undertake the locking function. The two work together to ensure that the clamping plates are both accurately aligned and firmly closed.

[0053] In a specific embodiment, the positioning component 6 includes a positioning post 61 and a positioning hole 62. The positioning post 61 is disposed on the first clamping plate 1 or the second clamping plate 2, and the positioning hole 62 is formed on the second clamping plate 2 or the first clamping plate 1. The positioning post 61 matches the positioning hole 62.

[0054] The positioning post 61 is vertically fixed in the center area of ​​the mating surface of the first clamping plate 1 or the second clamping plate 2, and its axis is orthogonal to the plane of the clamping plate; the positioning hole 62 is opened at the corresponding position of the other clamping plate (the second clamping plate 2 or the first clamping plate 1), and the diameter of the hole forms a clearance fit or an interference fit with the diameter of the positioning post 61; when the first clamping plate 1 and the second clamping plate 2 are closed, the post body of the positioning post 61 is precisely inserted into the positioning hole 62, the side wall of the post body is in contact with the hole wall, and the end of the post extends to the bottom of the positioning hole 62 or penetrates the clamping plate, so as to achieve axial alignment and radial limitation of the two clamping plates.

[0055] The function of the positioning post 61 is to provide an assembly guide reference and guide the second clamping plate 2 to close relative to the first clamping plate 1 along a preset path; the function of the positioning hole 62 is to accommodate the positioning post 61 and limit its radial offset, ensuring that the two clamping plates do not move horizontally; the two work together to form an "insertion-type alignment" mechanism: when the positioning post 61 is inserted into the positioning hole 62, the clamping plate position is forcibly corrected, the cumulative assembly error is eliminated, the power line clamping area is kept concentric, and the friction of the post-hole sidewall helps to suppress vibration displacement, providing a precise alignment basis for the locking of the buckle 31 and the groove 32 of the connecting component 3.

[0056] Of course, the positioning component 6 can also be other structures. For example, the positioning component 6 can also include a tapered pin and a matching tapered sleeve, using the self-centering of the tapered surface to achieve high-precision alignment.

[0057] In a specific embodiment, the edge of the first clamping plate 1 has a first notch 11, and the edge of the second clamping plate 2 has a second notch 21. When the first clamping plate 1 and the second clamping plate 2 are positioned by the positioning component 6, the first notch 11 and the second notch 21 cooperate to form a power cord hole 7.

[0058] The first notch 11 is a semi-circular groove formed on the edge of the first clamping plate 1, and its diameter matches the outer diameter of the power cord to be clamped; the second notch 21 is a semi-circular groove formed on the corresponding edge of the second clamping plate 2, and its shape and size are exactly the same as the first notch 11; when the positioning post 61 of the positioning component 6 is inserted into the positioning hole 62 to make the first clamping plate 1 and the second clamping plate 2 precisely aligned and closed, the semi-circular arc surface of the first notch 11 and the semi-circular arc surface of the second notch 21 are coaxially spliced ​​together to form a complete circular power cord hole 7. The inner wall of the hole is smooth and continuous without steps, ensuring that the power cord passes through without damage.

[0059] The number of power cord holes 7 can be set to multiple according to cable requirements. For example, one power cord hole 7 is formed by joining one of the first notches 11 of the first clamping plate 1 and one of the second notches 21 of the second clamping plate 2, with the hole diameter matching the outer diameter of the power cord of the thermostat 4, for fixing the power cord of the thermostat 4. Another power cord hole 7 is formed by joining another first notch 11 of the first clamping plate 1 and another second notch 21 of the second clamping plate 2, with the hole diameter matching the outer diameter of the power cord of the motor stator, for fixing the power cord of the motor stator. Of course, there can be more power cord holes 7, such as power cord holes 7 for fixing grounding wires or signal wires.

[0060] In a specific embodiment, the pressure plate 5 is integrally formed with the first clamping plate 1.

[0061] The pressure plate 5 and the first clamping plate 1 are integrally formed and manufactured through continuous processing of a single material, eliminating the assembly interface of the traditional split structure. Its core advantages are: there are no connecting gaps at the junction of the pressure plate 5 and the first clamping plate 1, forming a continuous force-bearing body. This allows the lateral constraint force (resisting lateral movement) and the top downward pressure (suppressing axial warping) of the L-shaped guard 51 on the thermostat 4 to be directly transmitted to the first clamping plate 1, avoiding the risk of fracture in stress concentration areas caused by bolted connections or welding, and significantly improving vibration resistance; there is no risk of loosening due to aging of connecting parts, maintaining geometric stability during motor temperature change cycles, preventing deformation and loosening of the L-shaped guard 51 due to thermal expansion differences, and ensuring that the thermostat 4 remains firmly attached to the temperature sensing surface throughout its life. This solves the problem of loosening caused by poor contact between the guard and the thermostat.

[0062] The clamp structure provided in this embodiment allows for the following installation steps: First, the main power cable of the motor stator is placed between one of the first notches 11 of the first clamping plate 1 and one of the second notches 21 of the second clamping plate 2. The power cable of the thermostat 4 is placed between the other first notch 11 and the other second notch 21. The positioning pin 61 of the positioning component 6 is inserted into the positioning hole 62 to precisely align the first clamping plate 1 and the second clamping plate 2. At this time, the first notch 11 and the second notch 21 are combined to form the power cable hole 7. When the clamping plates are closed, the buckle 31 of the connecting component 3 is embedded in the groove 32 and locked, forcing the first clamping plate 1 and the second clamping plate 2 to press all the power cables together. Then, the thermostat 4 is inserted along the gap between the L-shaped guard edge 51 of the pressure plate 5 and the stator temperature sensing surface. Its side wall is pressed against the vertical edge of the L-shaped guard edge 51, and its top is pressed by the horizontal edge. At the same time, the power cable of the thermostat 4 is led out from the thermostat outlet 52. The pressure plate 5 and the first clamping plate 1 are integrally formed to ensure that the L-shaped guard edge 51 forces the thermostat 4 to adhere tightly to the temperature sensing surface with constant pressure, thus completing the bidirectional constraint.

[0063] The advantages of the wire clamp structure provided in this embodiment are mainly reflected in:

[0064] The L-shaped guard 51 of the pressure plate 5 suppresses the lateral movement of the thermostat 4 through the vertical edge and prevents axial tilting through the horizontal edge. Combined with the constant pressure of the integrated pressure plate 5, it completely eliminates the displacement of the thermostat 4 caused by handling vibration. The thermostat outlet 52 is located on the vertical side of the L-shaped guard 51, isolating the power cord from the guard and avoiding the problem of "interference between the guard and the power cord causing constraint failure". The positioning post 61 and the positioning hole 62 cooperate to achieve millimeter-level alignment of the clamping plate and ensure that the power cord hole 7 is concentrically closed. The buckle 31 and the groove 32 provide one-click locking to reduce assembly time. The power cord hole 7 formed by the semi-circular first notch 11 and the second notch 21 is compatible with different wire diameters and has a multi-hole parallel layout to prevent cable tangling. The pressure plate 5 and the first clamping plate 1 are integrally formed to eliminate the risk of aging of the connectors and maintain geometric stability during temperature changes to ensure that the thermostat 4 can effectively sense temperature.

[0065] Example 2

[0066] This embodiment provides a stator assembly, such as Figures 8-11 As shown, the stator assembly includes a plastic-encapsulated stator 8 and a wire clamp structure as described in Embodiment 1 disposed on the plastic-encapsulated stator 8. The wire clamp structure fixes the power cord assembly through the power cord clamping area before injection molding and forms an integral structure with the plastic-encapsulated stator 8 after injection molding. The pressure plate 5 is located above the temperature sensing platform 81 of the plastic-encapsulated stator 8.

[0067] The top of the injection-molded stator 8 is provided with a planar temperature-sensing platform 81; after the first clamp 1 and the second clamp 2 of the wire clamp structure are locked by the buckle 31 and groove 32 of the connecting component 3, their bottoms are embedded in the injection-molded plastic of the encapsulated stator 8 to form an inseparable integrated structure; the pressure plate 5 is integrally formed with the first clamp 1 and extends vertically above the encapsulated stator 8, and the L-shaped guard 51 of the pressure plate 5 is horizontally suspended directly above the temperature-sensing platform 81, with a certain gap between the two for inserting the thermostat 4; after the thermostat 4 is installed, its bottom surface is attached to the temperature-sensing platform 81, its side wall abuts against the vertical edge of the L-shaped guard 51, and its top is pressed by the horizontal edge of the L-shaped guard 51, forming a rigid heat conduction chain of "encapsulated stator 8-wire clamp structure-thermometer 4".

[0068] In this embodiment, the power cord assembly is pre-fixed to the power cord clamping area of ​​the wire clamp before injection molding (locked by the power cord hole 7 formed by the first notch 11 and the second notch 21), eliminating the need for manual binding or glue fixing of the power cord in the traditional process. This allows the injection mold to complete the stator molding and wire clamp integration in one go, shortening the assembly time. Furthermore, the wire clamp structure and the encapsulated stator 8 are integrally molded to eliminate the air insulation layer, allowing the temperature controller 4 to directly conduct heat to the temperature sensing platform 81 through the pressure plate 5 and the first clamping plate 1, improving the temperature response speed and avoiding the temperature control lag failure caused by the assembly gap in the traditional split structure.

[0069] In addition, when installing the thermostat 4, it is inserted into the gap between the horizontal edge of the L-shaped guard 51 of the pressure plate 5 and the temperature sensing platform 81 of the plastic-encapsulated stator 8, so that the bottom surface of the thermostat 4 is completely in contact with the temperature sensing platform 81; the power cord of the thermostat 4 is simultaneously embedded into the thermostat outlet 52 of the pressure plate 5, and its displacement is restricted by the side wall of the outlet; at this time, the horizontal edge of the L-shaped guard 51 of the pressure plate 5 undergoes downward elastic deformation due to the interference fit with the top of the thermostat 4, forming a continuous vertical pre-tightening force, forcing the thermostat 4 to press tightly against the temperature sensing platform 81 to achieve zero-gap heat conduction; at the same time, the fit between the vertical edge of the L-shaped guard 51 and the side wall of the thermostat 4 can completely suppress lateral movement; finally, electrical tape is used to tie the power cord of the thermostat 4 and the main power cord of the motor outside the outlet to eliminate the risk of motion interference caused by the power cord lifting. In this process, the interference preload of the pressure plate 5 replaces the traditional glue bonding, avoiding glue aging failure or high temperature volatilization pollution, and reducing installation time; the mechanical constraint of the L-shaped guard 51 and the power cord bundling form redundant protection, which reduces the displacement of the temperature controller 4 in random vibration test, solving the problem of "loosening during handling" in the existing technology.

[0070] Example 3

[0071] This embodiment provides an electric motor, which includes the stator assembly described in Embodiment 2.

[0072] In this embodiment, the L-shaped guard 51 of the pressure plate 5 is interference-fitted with the temperature sensing platform 81, ensuring that the temperature controller 4 is tightly attached to the stator, guaranteeing no delay in temperature monitoring and eliminating the risk of motor burnout. Furthermore, the wire clamp structure is integrally molded with the plastic-encapsulated stator 8, which can withstand significant impact and vibration, preventing the temperature controller 4 from becoming loose during transport and causing the protection function to fail. At the same time, it eliminates the need for separate power cord fixing and adhesive application to the temperature controller 4, reducing motor assembly time.

[0073] In summary, it is readily understood by those skilled in the art that, without conflict, the aforementioned advantageous technical features can be freely combined and superimposed.

[0074] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model in any way. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A wire clamp structure, characterized in that, The clamp structure includes a first clamp plate, a second clamp plate, a connecting assembly, and a pressure plate for fixing the thermostat. The first clamp plate and the second clamp plate are connected by the connecting assembly to form a power cord clamping area. The pressure plate is connected to the first clamp plate. The pressure plate has an L-shaped protective edge. One side of the L-shaped protective edge abuts against one edge of the thermostat, and the other side presses tightly against the top of the thermostat.

2. The wire clamp structure according to claim 1, characterized in that, The pressure plate has a thermostat outlet for leading out the thermostat power cord.

3. The wire clamp structure according to claim 2, characterized in that, The thermostat outlet is located on the vertical edge of the L-shaped protective lining.

4. The wire clamp structure according to claim 1, characterized in that, The connecting component includes a buckle and a groove. The buckle is disposed on the first clamping plate or the second clamping plate, and the groove is formed on the second clamping plate or the first clamping plate. The buckle and the groove are matched.

5. The wire clamp structure according to claim 1, characterized in that, The clamp structure further includes a positioning component, one end of which is located on the first clamping plate and the other end of which is located on the second clamping plate, so that the first clamping plate and the second clamping plate cooperate.

6. The wire clamp structure according to claim 5, characterized in that, The positioning component includes a matching positioning post and a positioning hole. The positioning post is disposed on the first clamping plate or the second clamping plate, and the positioning hole is formed on the second clamping plate or the first clamping plate.

7. The wire clamp structure according to claim 6, characterized in that, The first clamp has a first notch on its edge, and the second clamp has a second notch on its edge. When the first clamp and the second clamp are engaged, the first notch and the second notch engage to form a power cord hole.

8. The wire clamp structure according to claim 1, characterized in that, The pressure plate is integrally formed with the first clamping plate.

9. A stator assembly, characterized in that, The stator assembly includes a plastic-encapsulated stator and a wire clamp structure as described in any one of claims 1-8 disposed on the plastic-encapsulated stator. The wire clamp structure fixes the power cord assembly through a power cord clamping area before injection molding and forms an integral structure with the plastic-encapsulated stator after injection molding. The pressure plate is located above the temperature sensing platform of the plastic-encapsulated stator.

10. An electric motor, characterized in that, The motor includes the stator assembly as described in claim 9.

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