Fixing structure and motor system

Abstract

The utility model discloses a fixing structure and a motor system, and the fixing structure comprises a connecting part which extends along a first direction; the spring leg is connected with the connecting part; each limiting part comprises a first part and a second part, one end of the first part is connected with the connecting part, the other end of the first part is connected with the second part, the second part comprises an abutting face in the second direction, and the abutting face is used for abutting against the side face of the temperature sensing target and limiting the temperature sensing target; the plurality of limiting parts, the spring leg and the connecting part jointly form a clamping space, the clamping space is used for clamping a temperature sensing target, and the second direction intersects with the first direction. The utility model has the advantages of simpler structure, higher strength and higher stability.

Description

Technical Field

[0001] The utility model relates to the field of motors, and in particular to a fixing structure and a motor system. Background Art

[0002] The motor stator is connected to an external power supply through terminals to provide electrical energy to the motor. The application of current will cause the motor stator to generate heat. The stator temperature needs to be measured in real time through a temperature sensor. If the temperature is too high, the controller will limit the current or reduce the rated power to prevent the motor from burning out.

[0003] Currently, the temperature sensor is typically fixed to the copper wire of the stator assembly by binding wire, epoxy glue, silicone glue, or welding. These two methods are complex, have low production efficiency, and high labor costs. At the same time, they are prone to expansion and cracking when the temperature rises, and there is a risk of failure later.

[0004] Another method is to place the temperature sensor inside a plastic shell, then fix the plastic shell with a fixing clip, and then fix the copper wire of the stator assembly to the other side of the fixing clip with a metal clip. Specifically, the side of the copper wire facing away from the plastic shell is fixed by a spring clip, and the side of the copper wire is fixed by a metal clip. This method causes the temperature sensor and the copper wire to fall off easily, and the fixing strength is low and the fixation is not firm. Utility Model Content

[0005] The purpose of the present invention is to solve the problem of low fixing strength and easy falling off of the current fixing method. The present invention provides a fixing structure and a motor system with a simple structure but high strength and stability.

[0006] In order to solve the above technical problems, the embodiment of the present utility model discloses a fixing structure, comprising:

[0007] a connecting portion extending along a first direction;

[0008] a spring leg connected to the connecting portion;

[0009] Multiple limiting parts, each limiting part includes a first part and a second part, one end of the first part is connected to the connecting part, and the other end is connected to the second part, the second part abutment surface, along the second direction, the abutment surface is used to abut with the side of the temperature sensing target and limit it, and is used to abut with the side of the temperature sensing target. The multiple limiting parts, the spring legs and the connecting part together form a clamping space, and the clamping space is used to clamp the temperature sensing target, wherein the second direction intersects with the first direction.

[0010] Using the above technical solution, the limiting part includes a first part and a second part, the first part is connected to the connecting part, and the abutting surface of the second part is used to abut against and limit the side of the temperature sensing target, that is, the side of the temperature sensing target is surface limited. Compared with the line limit in the existing technology, it has a higher clamping force, more stable limitation, higher fixing strength, more secure fixation, and the shaking problem will be improved; at the same time, multiple limiting parts are set, which can fix the side of the temperature sensing target in all directions, with higher fixing strength and more secure fixation.

[0011] Multiple limiting parts, spring legs and connecting parts together form a clamping space to clamp the temperature sensing target. The overall fixing structure is simple and has high fixing strength, achieving limitation in all directions.

[0012] According to another specific embodiment of the present invention, an embodiment of the present invention discloses a fixing structure, which also includes a clamping portion, wherein the clamping portion and the limiting portion are arranged on opposite sides of the connecting portion and are located on different planes, and the clamping portion includes a third part and a fourth part, wherein the third part and the fourth part are respectively connected to the connecting portion and are arranged on both sides of the connecting portion, and the third part and the fourth part are used to bend in a direction away from the clamping space to form a clamping space, and the clamping space is used to clamp the temperature sensor, and the clamping space and the clamping space are located on opposite sides of the connecting portion.

[0013] Using the above technical solution, the clamping part includes a third part and a fourth part, and the third part and the fourth part are bent in the direction away from the clamping space to form a clamping space to clamp the temperature sensor. The structure is simple, and the temperature sensor is clamped in the clamping space at the same time. That is, the clamping space clamps the temperature sensor in all directions, thereby improving the fixing strength and making the temperature sensor more secure.

[0014] According to another specific embodiment of the present invention, an embodiment of the present invention discloses a fixing structure, wherein the embracing portion includes a plurality of embracing portions, and the plurality of embracing portions are arranged at intervals along the first direction.

[0015] By adopting the above technical solution and providing a plurality of holding parts, the entire temperature sensor can be held in an all-round manner, thereby improving the fixing strength and making the temperature sensor more securely fixed.

[0016] According to another specific embodiment of the present invention, an embodiment of the present invention discloses a fixing structure, which also includes a placement portion, the placement portion and the clamping portion are arranged at intervals along the first direction, the placement portion is connected to at least one of the first parts, and the placement portion is provided with a placement space, and the placement space is used to place the bottom of the temperature sensor.

[0017] According to the technical scheme, the placing part and the holding part are arranged at intervals along the first direction, the placing part is provided with a placing space and a bottom for placing the temperature sensor, and the downward movement of the temperature sensor along the first direction is limited, that is, the temperature sensor is prevented from moving downward along the first direction, so that the fixing of the temperature sensor is more reliable.

[0018] According to another specific embodiment of the present application, the embodiment of the present application discloses a fixing structure, a limiting groove is arranged on the connecting part, and the limiting groove is used for clamping with the first protrusion on the temperature sensor.

[0019] According to the technical scheme, the temperature sensor is limited in the holding space on one side of the connecting part, and the limiting groove is arranged on the connecting part and clamped with the first protrusion on the temperature sensor, so that the movement of the temperature sensor in all directions is limited, that is, the movement of the temperature sensor in all directions is prevented, so that the fixing of the temperature sensor is more reliable.

[0020] According to another specific embodiment of the present application, the embodiment of the present application discloses a fixing structure, a spring leg includes a first connecting piece, a spring leg body and an end part, wherein,

[0021] The first connecting piece is used for connecting the spring leg body to the connecting part at the top of the connecting part;

[0022] The spring leg body extends downwardly from the first connecting piece and towards the connecting part; and

[0023] The end part extends downwardly from the spring leg body and away from the connecting part,

[0024] Wherein, the first opening is formed between the end part and the connecting part, and the first opening is used for inserting the temperature sensing target into the clamping space.

[0025] According to the technical scheme, the spring leg body extends downwardly from the first connecting piece and towards the connecting part, so that the spring leg body and the first connecting piece have an angle, and the spring leg body extends in the direction towards the temperature sensing target, forming a tapered structure instead of a parallel structure, and forming a clamping force on the temperature sensing target. Meanwhile, the end part extends downwardly from the spring leg body and away from the connecting part, so that the spring leg body and the end part have an angle, that is, the end part extends in the direction away from the temperature sensing target, so as to form the first opening for inserting the temperature sensing target into the clamping space.

[0026] That is to say, when the temperature sensing target is inserted into the clamping space from the first opening, the distance between the connection between the end and the spring leg body and the temperature sensing target is less than the thickness of the temperature sensing target, so that when the temperature sensing target is inserted into the clamping space, it can be interference fit with it, thereby enhancing the fixing strength, so that the temperature sensing target can be clamped in the clamping space. The structure is simple but the fixing strength is high.

[0027] According to another specific embodiment of the present invention, an embodiment of the present invention discloses a fixing structure, wherein the spring leg also includes a spring sheet extending from the spring leg body to the inside of the clamping space, and the spring sheet is used to cooperate with the limiting groove on the temperature sensing target to form a limit for the temperature sensing target.

[0028] By adopting the above technical solution, the spring piece cooperates with the limiting groove on the temperature sensing target to limit the temperature sensing target.

[0029] According to another specific embodiment of the present invention, an embodiment of the present invention discloses a fixing structure, wherein an anti-error component is further provided on one side of the first connecting member along the second direction, and the anti-error component is bent and extended in the direction toward the clamping space to cooperate with the chamfer on the temperature sensing target.

[0030] By adopting the above technical solution, the error-proofing part is bent in the direction toward the clamping space and cooperates with the chamfer on the temperature sensing target. While limiting the temperature sensing target, it can also ensure the correct installation position of the temperature sensing target, realizing the error-proofing function and improving the assembly efficiency of the production line.

[0031] That is, the conductor end of the first electrical conductor can only be inserted into the clamping space with the chamfered side first, and the other side cannot be inserted into the clamping space first. In other words, the insertion form of the conductor end of the first electrical conductor is limited to ensure the correct installation position of the conductor end of the first electrical conductor.

[0032] The embodiment of the present utility model further discloses a motor system, comprising:

[0033] a stator comprising at least one electrical conductor;

[0034] The fixing structure as described in any one of the above embodiments; and

[0035] Temperature sensor,

[0036] The conductor end of the first conductor of the at least one conductor is inserted into the clamping space as the temperature sensing target, the temperature sensor is inserted into the holding space, and along the first direction, the bottom of the temperature sensor is placed in the placement space.

[0037] By adopting the above technical solution, the clamping space fixes the conductor end of the first electrical conductor, and the holding space and the placement space fix the temperature sensor, so as to fix the conductor end of the first electrical conductor and the temperature sensor. At the same time, the clamping space and the holding space are located on opposite sides of the connecting part, thereby ensuring that the temperature sensor is located on the opposite side of the conductor end of the first electrical conductor, so that the temperature sensor measures the temperature of the conductor end of the first electrical conductor.

[0038] According to another specific embodiment of the present invention, an embodiment of the present invention discloses a motor system, wherein the conductor end of the first electrical conductor is provided with a chamfer, and the chamfer abuts against the anti-error component of the fixing structure.

[0039] By adopting the above technical solution, the chamfer and the anti-error component cooperate so that the conductor end of the first electrical conductor can only be inserted into the clamping space with the side having the chamfer first, and the other side cannot be inserted into the clamping space first. That is, the insertion form of the conductor end of the first electrical conductor is limited, ensuring the correct installation position of the conductor end of the first electrical conductor.

[0040] According to another specific embodiment of the present invention, an embodiment of the present invention discloses a motor system, wherein a conductor end portion of the first electrical conductor is provided with a limiting groove, and the limiting groove cooperates with a spring piece of the fixing structure.

[0041] By adopting the above technical solution, the limiting groove on the conductor end of the first electrical conductor cooperates with the elastic piece to limit the conductor end of the first electrical conductor.

[0042] According to another specific embodiment of the present invention, an embodiment of the present invention discloses a motor system, wherein the temperature sensor includes a temperature measuring wafer and an insulating shell covering the temperature measuring wafer, the insulating shell is inserted into and fixed in the clamping space, and along the first direction, the bottom of the insulating shell is placed in the placement space, the insulating shell is provided with a first protrusion that is engaged with the limiting groove of the fixed structure, and a second protrusion that abuts the bottom of one of the multiple clamping parts, and along the third direction, the first protrusion and the second protrusion are arranged on opposite sides of the insulating shell and are located in different planes.

[0043] By adopting the above technical solution, the temperature measuring wafer is directly packaged through an insulating shell. Compared with arranging a plastic shell outside the temperature sensor, this method makes the temperature measuring wafer closer to the conductor end of the first conductor, the distance is closer, the heat transfer path becomes shorter, and the temperature measurement thermal response time is improved, so that the measured temperature error is smaller and the temperature measurement speed is faster; the setting of the first protrusion and the second protrusion makes the temperature sensor more firmly fixed and prevents it from displacement in the first direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 A schematic structural diagram showing a fixing structure in some embodiments;

[0045] Figure 1A A schematic structural diagram showing a conductor end portion of a first electrical conductor in some embodiments;

[0046] Figure 2 A partial structural schematic diagram of a motor system provided by an embodiment of the present utility model is shown;

[0047] Figure 2A A schematic structural diagram showing a conductor end portion of a first electrical conductor in a motor system provided by an embodiment of the present utility model is shown;

[0048] Figure 2B A schematic diagram showing the structure of a temperature sensor in a motor system provided by an embodiment of the present utility model is shown;

[0049] Figure 3 A cross-sectional view of a fixing structure provided by an embodiment of the present invention is shown, wherein a conductor end portion of a first electrical conductor and a temperature sensor are assembled;

[0050] Figure 4 The three-dimensional view of the fixed structure provided by the embodiment of the present invention is shown in the front view. Figure 1 ;

[0051] Figure 5 The three-dimensional image of the fixed structure provided by the embodiment of the present invention under the rear view angle is shown. Figure 1 ;

[0052] Figure 6 A perspective view of the fixing structure provided by an embodiment of the present invention is shown;

[0053] Figure 7 A schematic diagram showing the structure of the fixed structure provided by an embodiment of the present utility model in a flattened state;

[0054] Figure 8 The three-dimensional view of the fixed structure provided by the embodiment of the present invention is shown in the front view. Figure 2 , wherein a conductor end of a first electrical conductor and a temperature sensor are assembled;

[0055] Figure 9 The three-dimensional image of the fixed structure provided by the embodiment of the present invention under the rear view angle is shown. Figure 2 , wherein a conductor end of a first electrical conductor and a temperature sensor are mounted.

[0056] Wherein, the reference sign: 10, plastic shell; 20, fixed clamp; 30, elastic sheet; 40, metal clamp; 100, the conductor end of the first electric conductor; 101, chamfer; 102, limiting groove; 200, fixed structure; 201, connecting strip; 2011, limiting slot; 202, spring leg; 2021, first connecting piece; 2022, spring leg main body; 2023, end; 2024, first opening; 2025, elastic sheet; 2026, second opening; 203, limiting part; 2031, first part; 2032, second part; 2033, clamping space; 204, holding part; 2041, third part; 2042, fourth part; 2043, holding space; 205, placing part; 2051, placing space; 206, mistake-proofing piece; 300, temperature sensor; 301, insulating shell; 302, first protrusion; 303, second protrusion. DETAILED DESCRIPTION

[0057] The specific embodiments explain the implementation of the present application, and the person skilled in the art can easily understand other advantages and effects of the present application from the content disclosed in the description. Although the description of the present application will be introduced in combination with the preferred embodiments, this does not mean that the features of the present application are limited to the embodiments. On the contrary, the purpose of introducing the present application in combination with the embodiments is to cover other options or modifications that can be extended based on the claims of the present application. In order to provide a deep understanding of the present application, many specific details will be included in the following description. The present application can also be implemented without using these details. In addition, in order to avoid confusion or obscure the focus of the present application, some specific details will be omitted in the description. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0058] It should be noted that in the present specification, similar reference numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0059] In the description of the present embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly used when the product of the present application is used, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0060] The terms "first", "second", and the like are only used for differentiation in description, and cannot be understood as indicating or implying relative importance.

[0061] In the description of this embodiment, it should be noted that, unless otherwise specified or limited, the terms "disposed," "connected," and "connected" should be understood broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this embodiment based on specific circumstances.

[0062] In order to make the purpose, technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0063] In some embodiments, reference Figure 1 and Figure 1A , the temperature sensor 300 is usually placed inside the plastic housing 10, and then the plastic housing 10 is fixed by the fixing clip 20, and the copper wire of the stator assembly (that is, the conductor end 100 of the first conductor described later) is fixed to the other side of the fixing clip 20 by the metal clip 40. Specifically, the conductor end 100 of the first conductor is fixed on the side facing away from the plastic housing 10 by the spring 30, and the side of the conductor end 100 of the first conductor is limited by the metal clip 40 (that is, the metal frame 40 is facing the conductor end of the first conductor). One side of the metal frame 40 is in contact with the conductor end 100 of the first conductor, and only one line of the metal frame 40 is in contact with the conductor end 100 of the first conductor to form a line limit thereon). This method causes the temperature sensor 300 and the conductor end 100 of the first conductor to be extremely easy to fall off, and the fixing strength is low and the fixation is not firm. At the same time, the temperature sensor 300 is arranged inside the plastic housing 10, and there is a large distance between the temperature measuring wafer inside the temperature sensor 300 and the conductor end 100 of the first conductor, resulting in an error in the measured temperature.

[0064] To this end, an embodiment of the present application provides a motor system, which eliminates the above-mentioned plastic shell, so that the distance between the temperature measuring wafer inside the temperature sensor and the copper wire of the stator assembly is reduced, the error of temperature measurement is reduced, and the measurement speed is increased. At the same time, a simple fixing structure is used to fix the temperature sensor and the conductor end of the first conductor in all directions, thereby enhancing the fixing strength and preventing the temperature sensor and the conductor end of the first conductor from loosening and falling off.

[0065] For example, refer to Figures 2 to 3The motor system is suitable for commercial vehicles, industrial vehicles, aircraft, industrial equipment, etc. The motor system includes: a stator (only part of it is shown), a fixed structure 200 and a temperature sensor 300. The stator includes at least one electrical conductor; the conductor end 100 of the first electrical conductor in the at least one electrical conductor is inserted into the clamping space 2033 of the fixed structure 200 as a temperature sensing target ( Figure 3 The conductor end portion 100 of the first electrical conductor is provided with a chamfer 101 ( Figure 2A The chamfer 101 is triangular, and the chamfer 101 and the anti-error part 206 of the fixing structure 200 ( Figure 4 The conductor end 100 of the first conductor can only be inserted into the clamping space 2033 in one direction, ensuring the correct installation position of the conductor end 100 of the first conductor. The conductor end 100 of the first conductor is provided with a limiting groove 102 ( Figure 2A The limiting groove 102 and the spring piece 2025 of the fixing structure 200 ( Figure 3 (visible) cooperates to limit the conductor end 100 of the first electrical conductor.

[0066] For example, refer to Figure 2B and Figure 3 The temperature sensor 300 includes a temperature measuring wafer (not shown) and an insulating shell 301 covering the temperature measuring wafer. The insulating shell 301 is a PTFE (Polytetrafluoroethylene) packaging structure. The insulating shell 301 is inserted into and fixed to the holding space 2043 ( Figure 5 As can be seen, the insulating shell 301 is provided with a first protrusion 302 that is engaged with the limiting groove 2011 of the fixing structure 200, and a second protrusion 303 that abuts against the bottom of one of the two holding parts 204 of the fixing structure 200 (i.e., the holding part 204 at the bottom along the first direction), and a second protrusion 303 that abuts against the bottom of one of the holding parts 204 of the fixing structure 200 along the third direction (i.e., Figure 2B In the Z direction shown, that is, the thickness direction of the temperature sensor 300 , the first protrusion 302 and the second protrusion 303 are disposed on opposite sides of the insulating housing 301 and are located in different planes.

[0067] By adopting the above technical solution, the clamping space 2033 fixes the conductor end 100 of the first electrical conductor, and the holding space 2043 fixes the insulating shell 301, so as to fix the conductor end 100 of the first electrical conductor (i.e., the temperature sensing target) and the temperature sensor 300. At the same time, the clamping space 2033 and the holding space 2043 are located on opposite sides of the connecting part, thereby ensuring that the temperature sensor 300 is located on the opposite side of the conductor end 100 of the first electrical conductor, so that the temperature sensor 300 can measure the temperature of the conductor end 100 of the first electrical conductor.

[0068] At the same time, the temperature measuring wafer is directly packaged by the insulating shell 301. Compared with arranging a plastic shell outside the temperature sensor 300, this method makes the temperature measuring wafer closer to the conductor end 100 of the first electrical conductor (in this method, there is only a connecting strip 201 and an insulating shell 301 described later between the temperature measuring wafer and the conductor end 100 of the first electrical conductor, and the thickness of the insulating shell 301 is much smaller than the thickness of the plastic shell), so that the measured temperature error is smaller and the temperature measurement speed is faster; the setting of the first protrusion 302 and the second protrusion 303 makes the temperature sensor 300 more firmly fixed and prevents it from displacement in the first direction.

[0069] For example, refer to Figures 3 to 5 The fixing structure 200 includes: a connecting portion (ie, a connecting strip 201 described later), a spring leg 202, and four limiting portions 203. The connecting portion (ie, the connecting strip 201 described later) is arranged along a first direction (ie, Figure 5 The spring leg 202 is connected to the connecting portion; each limiting portion 203 includes a first portion 2031 and a second portion 2032, one end of the first portion 2031 is connected to the connecting portion, and the other end is connected to the second portion 2032, along the second direction (i.e. Figure 4 The second portion 2032 is configured to abut against the side of the conductor end portion 100 of the first electrical conductor. The four limiting portions 203, the spring legs 202, and the connecting portion together form a clamping space 2033, which is configured to clamp the conductor end portion 100 of the first electrical conductor.

[0070] With the above technical solution, the second portion 2032 is used to abut against the side surface of the conductor end portion 100 of the first electrical conductor, that is, to perform surface positioning on the side surface of the conductor end portion 100 of the first electrical conductor (refer to Figure 6 ), compared with the line limit in some embodiments, the fixing strength is higher and the fixation is more secure; four limiting parts 203 are provided at the same time, which can fix the side of the conductor end 100 of the first electrical conductor in all directions, and the fixing strength is higher and the fixation is more secure; the four limiting parts 203, the spring legs 202 and the connecting part jointly form a clamping space 2033 to clamp the conductor end 100 of the first electrical conductor, and the overall fixing structure 200 is simple and has a high fixing strength.

[0071] It should be noted that the embodiment of the present application does not limit the number of the limiting parts 203. It can be four as shown in the embodiment of the present application, or it can be six, eight, ten, etc.

[0072] For example, refer to Figure 6 and Figure 7 The connecting portion is a connecting bar 201, and the connecting bar 201 is along the first direction (ie Figure 6The fixing structure 200 further includes two holding portions 204, which are arranged at intervals along the first direction (i.e., the length direction of the insulating housing 301). The two holding portions 204 are arranged alternately with the limiting portion 203, and are arranged along the second direction (i.e., the length direction of the insulating housing 301). Figure 6 The two holding portions 204 and the limiting portion 203 are disposed on opposite sides of the connecting bar 201 and are located in different planes.

[0073] For example, refer to Figure 5 and Figure 6 The holding portion 204 includes a third portion 2041 and a fourth portion 2042, which are respectively connected to the connecting strip 201 and are provided on both sides of the connecting strip 201. The third portion 2041 and the fourth portion 2042 are used to bend in a direction away from the clamping space 2033 to form a holding space 2043, and the holding space 2043 is used to hold the insulating housing 301 tightly ( Figure 9 visible), along the third direction (i.e. Figure 5 The holding space 2043 and the clamping space 2033 are located on opposite sides of the connecting strip 201 .

[0074] For example, the temperature sensor 300 is held tightly in the holding space 2043, that is, the holding space 2043 holds the temperature sensor 300 in all directions, thereby improving the fixing strength and making the temperature sensor 300 more securely fixed. At the same time, two holding parts 204 are provided, which can hold the entire temperature sensor 300 in all directions, thereby improving the fixing strength and making the temperature sensor 300 more securely fixed.

[0075] For example, refer to Figure 5 and Figure 9 The fixing structure further includes a placement portion 205, the placement portion 205 and the holding portion 204 along the first direction (ie Figure 5 The placement portion 205 is arranged at intervals (in the X direction shown in the figure), the placement portion 205 is connected to the two first portions 2031 (for example, the two first portions 2031 located at the bottom along the first direction shown in the embodiment of the present application), and one end of the placement portion 205 away from the first portion 2031 is bent along the direction toward the insulating shell 301 to form a placement space 2051. The placement space 2051 is used to place the bottom of the insulating shell 301 to limit the downward movement of the temperature sensor 300 along the first direction, that is, to prevent the temperature sensor 300 from moving downward along the first direction, so that the temperature sensor 300 is fixed more securely.

[0076] For example, refer to Figure 3 and Figure 5A square limiting groove 2011 is provided on the connecting strip 201, and the limiting groove 2011 is engaged with the first protrusion 302 on the above-mentioned insulating shell 301, thereby limiting the movement of the insulating shell 301 in various directions, that is, preventing the insulating shell 301 from moving in various directions, making the fixing of the insulating shell 301 more secure.

[0077] It should be noted that the embodiment of the present application does not limit the number and shape of the limiting grooves 2011, as long as they can be engaged with the first protrusions 302 of the insulating shell 301 and match their number, for example, there can also be two or three.

[0078] For example, refer to Figure 3 and Figure 4 The spring leg 202 includes a first connecting piece 2021, a spring leg body 2022 and an end 2023, wherein the first connecting piece 2021 is used to connect the spring leg body 2022 to the connecting strip 201 at the top of the connecting strip 201; the spring leg body 2022 extends downward from the first connecting piece 2021 and toward the connecting strip 201, so that there is an angle between the spring leg body 2022 and the first connecting piece 2021, that is, the spring leg body 2022 extends in a direction toward the conductor end 100 of the first electrical conductor, forming a clamping force on the conductor end 100 of the first electrical conductor.

[0079] Exemplarily, the end 2023 extends downward from the spring leg body 2022 and away from the connecting strip 201 so that there is an angle between the spring leg body 2022 and the end 2023, that is, the end 2023 extends in a direction away from the conductor end 100 of the first electrical conductor, thereby forming a first opening 2024, which is used for the conductor end 100 of the first electrical conductor to be inserted into the clamping space 2033.

[0080] Exemplarily, the spring leg 202 further includes a spring piece 2025 extending from the spring leg body 2022 to the interior of the clamping space 2033. The spring leg body 2022 includes a second opening 2026. The spring piece 2025 is located in the second opening 2026. The spring piece 2025 is used to engage with the limiting groove 102 ( Figure 2A (visible) cooperates to limit the conductor end 100 of the first electrical conductor.

[0081] For example, refer to Figure 6 and Figure 8 , along the second direction (i.e. Figure 8 Y direction shown), one side of the first connecting member 2021 (i.e. Figure 8 The left side of the perspective) is further provided with an anti-error member 206, which is bent and extended in the direction toward the clamping space 2033 to align with the chamfer 101 ( Figure 2A As can be seen, the conductor end 100 of the first electrical conductor is limited while ensuring the correct installation position of the conductor end 100 of the first electrical conductor. Due to the presence of the anti-error component 206, the conductor end 100 of the first electrical conductor cannot be smoothly inserted into the clamping space 2033 in the opposite installation method.

[0082] Among them, the first direction (i.e. Figure 4 X direction shown), the second direction (i.e. Figure 4 The Y direction shown) and the third direction (i.e. Figure 4 For the convenience of demonstration, the embodiment of the present application is described by taking the first direction, the second direction and the third direction as an example in which they are perpendicular to each other.

[0083] For example, refer to Figure 7 The fixing structure 200 provided in the embodiment of the present application is an integrally formed structure with a simple structure and low material cost. It can improve the fixing strength and is relatively stable while saving logistics costs, simplifying the process flow, and saving labor costs.

[0084] Combine Figure 3 and Figure 4 ,Will Figure 7 The state shown is formed after bending Figure 4 The fixed structure 200 is then positioned along the temperature sensing target (ie, the conductor end 100 of the first electrical conductor). Figure 3 Insert the temperature sensor 300 into the clamping space 2033 in the direction b shown in FIG. Figure 3 The temperature sensor 300 is inserted and fixed in the clamping space 2043 in the direction a shown. The first protrusion 302 and the second protrusion 303 on the insulating housing 301 limit the temperature sensor 300 in all directions, and the spring leg 202 and the spring clip 2025 limit the temperature sensing target (i.e., the conductor end 100 of the first electrical conductor) in all directions. The matching strength and reliability of the clamping portion 204 and the temperature sensor 300 are greatly improved. The four limiting portions 203 achieve surface positioning of the temperature sensing target (i.e., the conductor end 100 of the first electrical conductor), resulting in a higher clamping force and more stable positioning, which will improve the shaking problem. It also realizes the error-proofing function and improves the assembly of the production line. At the same time, the structure is simple, and the materials and process steps are reduced.

[0085] Although the present invention has been illustrated and described with reference to certain preferred embodiments of the present invention, it should be understood by those skilled in the art that the above description is provided to further illustrate the present invention in conjunction with specific embodiments, and that the present invention should not be construed as being limited to these descriptions. Those skilled in the art may make various changes in form and detail, including simple deductions or substitutions, without departing from the spirit and scope of the present invention.

Claims

1. A fixing structure, characterized in that: include: a connecting portion extending along a first direction; a spring leg connected to the connecting portion; Multiple limiting parts, each limiting part includes a first part and a second part, one end of the first part is connected to the connecting part, and the other end is connected to the second part, the second part includes an abutting surface, along the second direction, the abutting surface is used to abut with the side of the temperature sensing target and limit it, the multiple limiting parts, the spring legs and the connecting part together form a clamping space, and the clamping space is used to clamp the temperature sensing target, wherein the second direction intersects with the first direction.

2. The fixing structure according to claim 1, wherein: The fixing structure also includes a clamping portion, which is arranged on opposite sides of the connecting portion and on different planes from the limiting portion. The clamping portion includes a third part and a fourth part, which are respectively connected to the connecting portion and are arranged on both sides of the connecting portion. The third part and the fourth part are used to bend in a direction away from the clamping space to form a clamping space. The clamping space is used to clamp the temperature sensor. The clamping space and the clamping space are located on opposite sides of the connecting portion.

3. The fixing structure according to claim 2, wherein: The embracing parts include a plurality of embracing parts, and the plurality of embracing parts are arranged at intervals along the first direction.

4. The fixing structure according to claim 2, wherein: The fixing structure further includes a placement portion, which is spaced apart from the holding portion along the first direction, and is connected to at least one of the first parts. The placement portion is provided with a placement space, and the placement space is used to place the bottom of the temperature sensor.

5. The fixing structure according to claim 1, wherein: The connecting portion is provided with a limiting groove, and the limiting groove is used to be engaged with the first protrusion on the temperature sensor.

6. The fixing structure according to claim 1, wherein: The spring leg comprises a first connecting member, a spring leg body and an end portion, wherein: The first connecting member is used to connect the spring leg body to the connecting portion at the top of the connecting portion; The spring leg body extends downward from the first connecting member and toward the connecting portion; and The end portion extends downward from the spring leg body and away from the connecting portion, A first opening is formed between the end portion and the connecting portion, and the first opening is used for inserting the temperature sensing target into the clamping space.

7. The fixing structure according to claim 6, wherein: The spring leg further includes an elastic sheet extending from the spring leg body toward the interior of the clamping space, and the elastic sheet is used to cooperate with the limiting groove on the temperature sensing target to limit the temperature sensing target.

8. The fixing structure according to claim 6, wherein: Along the second direction, an anti-error component is further provided on one side of the first connecting member, and the anti-error component is bent and extended in a direction toward the clamping space to cooperate with the chamfer on the temperature sensing target.

9. A motor system, characterized in that: include: a stator comprising at least one electrical conductor; The fixing structure according to any one of claims 1 to 8; and Temperature sensor, The conductor end of the first conductor of the at least one conductor is inserted into the clamping space as the temperature sensing target, the temperature sensor is inserted into the holding space, and along the first direction, the bottom of the temperature sensor is placed in the placement space.

10. The motor system according to claim 9, wherein: The conductor end of the first electrical conductor is provided with a chamfer, and the chamfer abuts against the anti-error component of the fixing structure.

11. The motor system according to claim 9, wherein: A limiting groove is provided at the conductor end of the first electrical conductor, and the limiting groove cooperates with the elastic piece of the fixing structure.

12. The motor system according to claim 9, wherein: The temperature sensor includes a temperature measuring wafer and an insulating shell covering the temperature measuring wafer, the insulating shell is inserted into and fixed in the holding space, along the first direction, the bottom of the insulating shell is placed in the placement space, the insulating shell is provided with a first protrusion that is engaged with the limiting groove of the fixed structure, and a second protrusion that abuts against the bottom of one of the multiple holding parts, along the third direction, the first protrusion and the second protrusion are arranged on opposite sides of the insulating shell and are located in different planes, wherein the third direction intersects with the first direction.

Images