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 holding part comprises a first part and a second part, the first part and the second part are connected with the connecting part and arranged on the two sides of the connecting part, the first part and the second part are used for being bent in the opposite directions to form a holding space, and the holding space is used for holding the temperature sensor; the clamping part and the holding part are arranged in a spaced mode in the first direction, the clamping part and the connecting part are arranged in a spaced mode in the second direction to form a first clamping space, the first clamping space is used for clamping the bottom of the temperature sensor, and the second direction intersects with the first direction. The temperature sensor is simple in structure and high in strength, and the temperature sensor is not easy to fall off.

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. This method causes the temperature sensor to fall off easily, has low fixing strength, and is not firmly fixed. Utility Model Content

[0005] The purpose of the present invention is to solve the problem that the current temperature sensor is easy to fall off. The present invention provides a fixing structure and a motor system with a simple structure but high strength, and the temperature sensor is not easy to fall off.

[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 holding portion, the holding portion comprising a first portion and a second portion, the first portion and the second portion being respectively connected to the connecting portion and disposed on both sides of the connecting portion, the first portion and the second portion being configured to bend toward each other to form a holding space, the holding space being configured to hold the temperature sensor;

[0009] The clamping portion and the embracing portion are spaced apart along the first direction, and the clamping portion and the connecting portion are spaced apart along the second direction to form a first clamping space, and the first clamping space is used to clamp the bottom of the temperature sensor, wherein the second direction intersects with the first direction.

[0010] Using the above technical solution, the clamping portion includes a first portion and a second portion, which are bent in opposite directions to form a clamping space to clamp the temperature sensor. This simple structure simultaneously clamps the temperature sensor within the clamping space, i.e., the clamping space provides a comprehensive clamping of the temperature sensor, thereby improving the fixing strength and making the temperature sensor more secure. Furthermore, the clamping portion and the connecting portion are spaced apart along the second direction to form a first clamping space, which is used to clamp the bottom of the temperature sensor. The clamping portion and the clamping portion are spaced apart along the first direction. In this way, the clamping portion and the clamping portion can jointly limit the movement of the temperature sensor in the first direction, and the first clamping space can also limit the movement of the bottom of the temperature sensor in the second direction.

[0011] In summary, the arrangement of the clamping portion and the holding portion can fully limit the temperature sensor and prevent it from falling off. This effectively prevents the temperature sensor from easily falling off. At the same time, the structure of the clamping portion and the holding portion is simple but the fixing strength is high.

[0012] According to another specific embodiment of the present invention, an embodiment of the present invention discloses a fixing structure, wherein both sides of the first clamping space are open along a third direction, wherein the third direction intersects with the first direction and the second direction respectively.

[0013] According to another specific embodiment of the present invention, the embodiment of the present invention discloses a fixing structure, wherein the clamping portion includes a first connecting member, a clamping portion body and a first end portion, wherein:

[0014] The first connecting member is used to connect the clamping portion body to the connecting portion at the bottom of the connecting portion;

[0015] The clamping portion body extends upward from the first connecting member and toward the connecting portion; and

[0016] The first end portion extends upward from the clamping portion body and away from the connecting portion,

[0017] A first opening is formed between the first end portion and the connecting portion, and the first opening is used for allowing the temperature sensor to be inserted into the first clamping space.

[0018] With the above technical solution, the clamping portion body extends upward from the first connecting member and toward the connecting member, so that an angle is formed between the clamping portion body and the first connecting member. At the same time, the clamping portion body extends in a direction toward the temperature sensor, forming a tapered structure rather than a parallel structure, thereby exerting a clamping force on the temperature sensor. At the same time, the first end portion extends upward from the clamping portion body and away from the connecting member, so that an angle is formed between the clamping portion body and the first end portion, that is, the first end portion extends in a direction away from the temperature sensor, thereby forming a first opening for the temperature sensor to be inserted into the first clamping space. The distance between the first end portion and the clamping portion body and the temperature sensor is less than the thickness of the temperature sensor, so that when the temperature sensor is inserted into the first clamping space, it can have an interference fit with the first clamping space, thereby strengthening the fixing strength, thereby allowing the temperature sensor to be clamped in the clamping space. The structure is simple but the fixing strength is high.

[0019] According to another specific embodiment of the present invention, an embodiment of the present invention discloses a fixing structure, wherein a limiting groove is provided on the connecting portion, and the limiting groove is used to engage with the first protrusion on the temperature sensor.

[0020] By adopting the above technical solution, the temperature sensor is confined within the clamping space and the first clamping space. The limiting groove is provided on the connecting part and is engaged with the first protrusion on the temperature sensor. In this way, the movement of the temperature sensor in all directions is restricted, that is, the movement of the temperature sensor in all directions is prevented, making the fixation of the temperature sensor more secure.

[0021] According to another specific embodiment of the present invention, an embodiment of the present invention discloses a fixing structure, wherein the fixing structure further comprises a spring leg, wherein the spring leg is connected to the connecting portion;

[0022] a plurality of limiting portions, the plurality of limiting portions being connected to the connecting portion and spaced apart on both sides of the connecting portion; the plurality of limiting portions, the spring legs, and the connecting portion jointly forming a second clamping space for clamping a temperature sensing target; one of the limiting portions being configured to abut against a first chamfer on the temperature sensing target; and at least one of the limiting portions being connected to the clamping portion;

[0023] Along the second direction, the second clamping space and the first clamping space are located on opposite sides of the connecting portion.

[0024] The above technical solution, with multiple stoppers, enables all-around fixation of the sides of the temperature sensing target, resulting in a stronger and more secure fixation. The multiple stoppers, spring legs, and connecting parts together form a second clamping space to clamp the temperature sensing target. The overall fixing structure is simple and strong, achieving positional limits in all directions. One of the stoppers abuts against the first chamfer on the temperature sensing target, limiting the temperature sensing target while also ensuring its correct installation position, achieving error-proofing and enhancing assembly efficiency on the production line.

[0025] The second clamping space is used to clamp the temperature sensing target, and the first clamping space is used to clamp the temperature sensor. The second clamping space and the first clamping space are located on opposite sides of the connecting part, that is, the temperature sensing target and the temperature sensor are located on opposite sides of the connecting part, so that the distance between the temperature sensor and the temperature sensing target is smaller, reducing measurement error and measurement time.

[0026] According to another specific embodiment of the present invention, an embodiment of the present invention discloses a fixing structure, wherein the spring leg further includes a spring sheet, and the spring sheet is used to cooperate with a limiting groove on the temperature sensing target to limit the temperature sensing target.

[0027] 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.

[0028] According to another specific embodiment of the present invention, an embodiment of the present invention discloses a fixing structure, each of the limiting parts includes an extension piece and a limiting part, one end of the extension piece is connected to the connecting part, and the other end is connected to the limiting part, along the third direction, the limiting part includes an abutting surface, and the abutting surface abuts against the side of the temperature sensing target.

[0029] By adopting the above technical solution, the abutting surface of the limiting 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.

[0030] The embodiment of the present utility model further discloses a motor system, comprising:

[0031] a stator comprising at least one electrical conductor;

[0032] The fixing structure as described in any one of the above embodiments; and

[0033] Temperature sensor,

[0034] The temperature sensor is inserted and fixed in the first clamping space and the holding space, and a conductor end of a first electric conductor of the at least one electric conductor is inserted into the second clamping space as a temperature sensing target.

[0035] The second clamping space fixes the conductor end of the first electric conductor, the first clamping space and the holding space fix the temperature sensor, and the second clamping space, the first clamping space and the holding space are located on opposite sides of the connecting portion, so that the temperature sensor is located on the opposite side of the conductor end of the first electric conductor, and the temperature sensor measures the temperature of the conductor end of the first electric conductor.

[0036] According to another specific embodiment of the present application, the embodiment of the present application discloses a motor system, the conductor end of the first electric conductor is provided with a first chamfer, the first chamfer includes a first surface and a second surface, the first surface extends along the first direction, and the second surface is arranged at an angle to the first surface.

[0037] The first chamfer is arranged to ensure that the conductor end of the first electric conductor can only be inserted into the second clamping space in one direction, and the installation position of the temperature sensing target is correct.

[0038] That is, the conductor end of the first electric conductor can only be inserted into the second clamping space on one side with the first chamfer, and cannot be inserted into the second clamping space on the other side, that is, the insertion form of the conductor end of the first electric conductor is limited, and the installation position of the conductor end of the first electric conductor is correct.

[0039] According to another specific embodiment of the present application, the embodiment of the present application discloses a motor system, the conductor end of the first electric conductor is provided with a first chamfer, the first chamfer includes a first surface and a second surface, the first surface extends along the first direction, and the second surface is arranged at an angle to the first surface.

[0040] The first chamfer is arranged to ensure that the conductor end of the first electric conductor can only be inserted into the second clamping space in one direction, and the installation position of the temperature sensing target is correct.

[0041] According to another specific embodiment of the utility model, the utility model discloses an electric motor system, the temperature sensor includes temperature measuring wafer and the insulating shell of cladding temperature measuring wafer, the insulating shell inserts and fixes in the first clamping space and the tight space, the insulating shell is provided with the first protruding of the limit groove of the fixed structure with the clamping of, and the second protruding of the bottom of the fixed structure's tight part is abutted, along the second direction, the first protruding and the second protruding are located on the opposite sides of the insulating shell, and are located in different planes.

[0042] Adopt the technical scheme, directly through the insulating shell and pack temperature measuring wafer, compared to again in temperature sensor outer cover and set up a plastic shell, its mode is simpler and the thickness is far less than the thickness of plastic shell, so that temperature measuring wafer is more close to the conductor end of first electric conductor, distance is closer, heat transfer path becomes small, temperature measuring thermal reaction time improves, makes the temperature error measured smaller and temperature measuring speed is faster;The first protruding and the second protruding are set, so that the fixing of temperature sensor is more firm, prevent its first direction displacement. BRIEF DESCRIPTION OF DRAWINGS

[0043] Figure 1 The structure schematic diagram of the fixed structure in some embodiments is shown;

[0044] Figure 1A The structure schematic diagram of the conductor end of first electric conductor in some embodiments is shown;

[0045] Figure 2 The partial structure schematic diagram of the electric motor system provided by the utility model embodiment is shown;

[0046] Figure 2A The structure schematic diagram of the conductor end of first electric conductor in the electric motor system provided by the utility model embodiment is shown;

[0047] Figure 2B The structure schematic diagram of temperature sensor in the electric motor system provided by the utility model embodiment is shown;

[0048] Figure 3 The sectional view of the fixed structure provided by the utility model embodiment is shown Figure 1 Wherein the conductor end of first electric conductor and temperature sensor are assembled;

[0049] Figure 4 The three-dimensional of the fixed structure under the side view angle provided by the utility model embodiment is shown Figure 1 Wherein the conductor end of first electric conductor and temperature sensor are not assembled;

[0050] Figure 5 The three-dimensional of the fixed structure under the rear view angle provided by the utility model embodiment is shown Figure 1 , wherein the conductor end of the first electrical conductor and the temperature sensor are not assembled;

[0051] Figure 6 The three-dimensional side view of the fixed structure provided by the embodiment of the present invention is shown. Figure 2 , in which a temperature sensor is assembled;

[0052] Figure 7 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 , in which a temperature sensor is assembled;

[0053] Figure 8 The three-dimensional top view of the fixed structure provided by the embodiment of the present invention is shown. Figure 1 , wherein a conductor end of a first electrical conductor and a temperature sensor are mounted;

[0054] Figure 9 A schematic diagram showing the structure of the fixed structure provided by an embodiment of the present utility model in a flattened state;

[0055] Figure 10 A cross-sectional view showing the fixing structure provided by an embodiment of the present invention Figure 2 , wherein the conductor end of the first electrical conductor and the temperature sensor are not assembled.

[0056] Wherein, reference numerals: 10, plastic housing; 20, fixing clip; 30, spring piece; 40, metal clip; 100, conductor end portion of first conductor; 101, first chamfer; 102, first surface; 103, second surface; 104, limiting groove; 200, fixing structure; 201, connecting strip; 2011, limiting groove; 202, spring leg; 2021, second connecting member; 2022, spring leg body; 2023, second end portion; 2024, second opening; 2025, spring piece; 2026, third opening; 203, limiting portion; 203 1. Extension member; 2032. Limiting member; 2033. Abutting surface; 2034. Second clamping space; 2035. Anti-error member; 204. Clamping portion; 2041. First portion; 2042. Second portion; 2043. Clamping space; 205. Clamping portion; 2051. First clamping space; 2052. First connecting member; 2053. Clamping portion body; 2054. First end portion; 2055. First opening; 300. Temperature sensor; 301. Insulating shell; 302. First protrusion; 303. Second protrusion; 304. Second chamfer. DETAILED DESCRIPTION

[0057] The following is an explanation of the implementation of the present invention by means of specific specific embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. Although the description of the present invention will be introduced in conjunction with the preferred embodiment, this does not mean that the features of this utility model are limited to this implementation. On the contrary, the purpose of introducing the utility model in conjunction with the implementation is to cover other options or modifications that may be extended based on the claims of the present invention. In order to provide an in-depth understanding of the present invention, the following description will contain many specific details. The present invention can also be implemented without using these details. In addition, in order to avoid confusion or blurring the focus of the present invention, some specific details will be omitted in the description. It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0058] It should be noted that in this specification, similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0059] In the description of this embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as a limitation on the utility model.

[0060] The terms “first”, “second”, etc. are only used for distinguishing descriptions and should not 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 described in further 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 conductor end of the first electrical conductor is reduced, thereby reducing the error in temperature measurement and improving the measurement speed. At the same time, a simple fixing structure is used to fix the temperature sensor and the conductor end of the first electrical conductor in all directions, thereby enhancing the fixing strength and preventing the temperature sensor and the conductor end of the first electrical conductor from loosening and falling off.

[0065] For example, refer to Figures 2 to 4 The 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 second clamping space 2034 ( Figure 3 As can be seen), the temperature sensor 300 is inserted into and fixed in the first clamping space 2051 and the holding space 2043.

[0066] For example, refer to Figures 2B to 4 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 of the fixed structure 200. Figure 3 The bottom of the insulating housing 301 is provided with a second chamfer 304, and the second chamfer 304 extends downward from the first opening 2055 described later along the first direction (ie Figure 3 a direction shown in FIG) is inserted into and fixed to the first clamping space 2051 of the fixing structure 200, and the insulating housing 301 is provided with a limiting groove 2011 ( Figure 5 The first protrusion 302 that is engaged with the first protrusion 302 and the second protrusion 303 that abuts against the bottom of the holding portion 204 of the fixing structure 200 are connected along the second direction (ie Figure 2B 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] For example, refer to Figure 2A The conductor end portion 100 of the first electrical conductor is provided with a first chamfer 101 ( Figure 2A As can be seen, the first chamfer 101 includes a first surface 102 and a second surface 103. The first surface 102 is along the first direction (ie Figure 2A The second surface 103 and the first surface 102 are arranged at an angle, and the first surface 102 of the first chamfer 101 and the contact surface of one of the limiting portions 203 of the fixing structure 200 (ie, the contact surface described later) are arranged at an angle. Figure 4 The abutting surface of the anti-error component 2035 shown in the figure abuts against each other, so that the conductor end 100 of the first electrical conductor can only be inserted into the second clamping space 2034 along one direction, ensuring the correct installation position of the conductor end 100 of the first electrical conductor.

[0068] It should be noted that the embodiment of the present application does not limit the specific angle between the second surface 103 and the first surface 102. It can be an obtuse angle as shown in the figure, or a right angle or an acute angle, as long as the anti-error component 2035 described later can be offset against the first surface 102.

[0069] For example, in combination Figure 3 and Figure 4 The conductor end portion 100 of the first electrical conductor is provided with a limiting groove 104 ( Figure 2A As can be seen, the retaining groove 104 cooperates with the spring clip 2025 of the fixing structure 200 to retain the conductor end 100 of the first electrical conductor. The retaining groove 104 is a quadrilateral, but is not limited thereto. Other shapes, such as a triangle or a pentagon, are also possible. Accordingly, the embodiment of the present application does not impose any restrictions on the shape of the spring clip 2025, as long as it can be inserted into the retaining groove 104 to retain the conductor end 100 of the first electrical conductor.

[0070] By adopting the above technical solution, the second clamping space 2034 fixes the conductor end 100 of the first electrical conductor, and the first clamping space 2051 and the holding space 2043 fix the temperature sensor 300, so as to fix the conductor end 100 of the first electrical conductor and the temperature sensor 300 at the same time. At the same time, the second clamping space 2034 and the first clamping space 2051 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 measures the temperature of the conductor end 100 of the first electrical conductor.

[0071] At the same time, the temperature measuring wafer is directly packaged through the insulating shell 301. Compared with arranging a plastic shell outside the temperature sensor 300, this method is simpler, and the thickness of the plastic shell is much greater than the thickness of the insulating shell 301 used in the embodiment of the present application. In this way, the temperature measuring wafer is closer to the conductor end 100 of the first conductor, the distance is closer, the heat transfer path becomes smaller, and the temperature measurement thermal reaction time is improved, 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 to prevent it from displacement in the first direction.

[0072] For example, refer to Figures 3 to 5 The fixing structure 200 includes: a connecting portion (ie, a connecting strip 201 described later), a holding portion 204, and a clamping portion 205. The connecting portion is arranged along a first direction (ie, Figure 3 The holding portion 204 includes a first portion 2041 and a second portion 2042, which are respectively connected to the connecting portion and are arranged on both sides of the connecting portion. The first portion 2041 and the second portion 2042 are used to bend in opposite directions to form a holding space 2043, and the holding space 2043 is used to hold the temperature sensor 300; the clamping portion 205 is spaced apart from the holding portion 204 along the first direction, and the clamping portion 205 is spaced apart from the connecting portion along the second direction (i.e. Figure 3 The first clamping spaces 2051 are arranged at intervals (in the Y direction shown) to form first clamping spaces 2051, which are used to clamp the bottom of the temperature sensor 300.

[0073] Using this technical solution, the temperature sensor 300 is firmly held within the clamping space 2043. In other words, the clamping space 2043 secures the temperature sensor 300 in all directions, improving the fixing strength and making the temperature sensor 300 more secure. Furthermore, the first clamping space 2051 is used to clamp the bottom of the temperature sensor 300. The clamping portion 205 is spaced apart from the clamping portion 204 along the first direction. Thus, the clamping portion 205 and the clamping portion 204 can jointly restrict movement of the temperature sensor 300 in the first direction, while the first clamping space 2051 can restrict movement of the bottom of the temperature sensor 300 in the second direction.

[0074] In summary, the arrangement of the clamping portion 205 and the holding portion 204 can fully position the temperature sensor 300, effectively preventing the temperature sensor 300 from easily falling off. Furthermore, the clamping portion 205 and the holding portion 204 have a simple structure but high fixing strength. Furthermore, the presence of the clamping portion 205 provides strong fixation and support for the bottom of the temperature sensor 300. Therefore, only one holding portion 204 is required to fully position the temperature sensor 300.

[0075] Of course, it is understandable that a plurality of holding portions 204 can be provided, and the plurality of holding portions 204 are provided above the clamping portion 205 and along the first direction (ie Figure 4 That is to say, the embodiment of the present application does not limit the specific number of the holding parts 204, and it can be one, two, three, etc.

[0076] For example, the connecting portion is a connecting bar 201, which is a rectangular strip structure and extends in the first direction (ie Figure 3 The X direction shown, ie the length direction of the conductor end of the temperature sensor / first electrical conductor) extends.

[0077] For example, refer to Figure 3 , along the third direction (i.e. Figure 3 The first clamping space 2051 is open on both sides. The clamping portion 205 includes a first connecting piece 2052, a clamping portion body 2053 and a first end 2054. The first connecting piece 2052 is used to connect the clamping portion body 2053 to the connecting portion at the bottom of the connecting strip 201; the clamping portion body 2053 extends upward from the first connecting piece 2052 (i.e., Figure 3 b direction shown) and extending toward the connecting portion; and the first end portion 2054 extends upward from the clamping portion body 2053 (ie Figure 3b direction) and extends away from the connecting strip 201, wherein a first opening 2055 is formed between the first end 2054 and the connecting strip 201, and the first opening 2055 is used for inserting the second chamfer 304 of the temperature sensor 300 into the first clamping space 2051.

[0078] Using the above technical solution, the clamping portion body 2053 extends upward from the first connecting member 2052 and toward the connecting portion, such that an angle is formed between the clamping portion body 2053 and the first connecting member 2052. That is, the clamping portion body 2053 extends in a direction toward the temperature sensor 300, forming an acute angle with the axial direction (i.e., the first direction) of the temperature sensor 300, thereby exerting a clamping force on the temperature sensor 300. Simultaneously, the first end portion 2054 extends upward from the clamping portion body 2053 and away from the connecting portion, such that an angle is formed between the clamping portion body 2053 and the first end portion 2054. That is, the first end portion 2054 extends in a direction away from the temperature sensor 300, thereby forming a first opening 2055 for inserting the temperature sensor 300 into the first clamping space 2051.

[0079] For example, refer to Figure 3 and Figure 5 A square limiting groove 2011 is provided on the connecting strip 201, and the limiting groove 2011 is used to engage with the first protrusion 302 on the temperature sensor 300, thereby limiting the movement of the temperature sensor 300 in various directions, that is, preventing the temperature sensor 300 from moving in various directions, making the temperature sensor 300 more securely fixed.

[0080] 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 are consistent with the shape and number of the first protrusions 302.

[0081] For example, refer to Figures 5 to 7 The fixing structure 200 further includes a spring leg 202 and four limiting portions 203. The spring leg 202 and the connecting strip 201 ( Figure 9 The four limiting portions 203 are connected to the connecting strip 201 and are spaced apart on both sides of the connecting strip 201. The four limiting portions 203, the spring legs 202 and the connecting strip 201 together form a second clamping space 2034. The second clamping space 2034 is used to clamp the conductor end 100 of the first electrical conductor. One of the limiting portions 203 (specifically, along the Figure 7 The Z direction, the limit portion located on the upper left side) is used as an error-proofing member 2035 for contacting the first surface 102 of the first chamfer 101 on the conductor end 100 of the first electrical conductor; the other limit portion 203 (specifically, along Figure 7 In the Z direction, the limiting portion located on the lower left side is connected to the clamping portion 205.

[0082] Combining Figure 4 , along the second direction (i.e. Figure 4 Y direction shown in the figure), the second clamping space 2034 is located on the opposite side of the connecting strip 201 with the first clamping space 2051.

[0083] Exemplarily, the error-proofing piece 2035 is bent and extends in the direction towards the second clamping space 2034 to cooperate with the first face 102 of the first chamfer 101 (as shown) on the conductor end 100 of the first electrical conductor, limiting the conductor end 100 of the first electrical conductor while ensuring the correct installation position of the conductor end 100 of the first electrical conductor. Due to the presence of the error-proofing piece 2035, the opposite way of installation cannot smoothly insert the conductor end 100 of the first electrical conductor into the second clamping space 2034. Figure 2A With the above technical solution, four limiting parts 203 are arranged to fix the side surface of the conductor end 100 of the first electrical conductor in all directions, with higher fixing strength and more stable fixation.

[0084] Meanwhile, the four limiting parts 203, the spring leg 202 and the connecting strip 201 jointly form the second clamping space 2034 to clamp the conductor end 100 of the first electrical conductor, and the overall fixing structure 200 is simple and has high fixing strength, realizing the limiting in various directions. One of the limiting parts 203 abuts against the first face 102 of the first chamfer 101 on the conductor end 100 of the first electrical conductor, limiting the conductor end 100 of the first electrical conductor while ensuring the correct installation position of the conductor end 100 of the first electrical conductor, realizing the error-proofing function and having higher assembly line assembly.

[0085] It should be noted that the number of the limiting parts 203 is not limited in the embodiments of the present application, which can be four as shown in the embodiments of the present application, or six, eight, ten, etc.

[0086] Exemplarily, referring to

[0087] , each of the limiting parts 203 includes an extending piece 2031 and a limiting piece 2032, one end of the extending piece 2031 is connected with the connecting strip 201, and the other end is connected with the limiting piece 2032, along the third direction (i.e. Figures 7 to 9 Z direction shown in the figure), the limiting piece 2032 includes an abutting surface 2033, which abuts against the side surface of the conductor end 100 of the first electrical conductor to limit the side surface of the conductor end 100 of the first electrical conductor, having higher clamping force, more stable limiting, higher fixing strength, more stable fixation and improved shaking problem compared with the line limiting of the prior art. Figure 8

[0088] ​For example, refer to Figure 9 and Figure 10 The spring leg 202 includes a second connecting member 2021, a spring leg body 2022 and a second end 2023, wherein the second connecting member 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 member 2052 (i.e. Figure 10 The spring leg body 2022 extends in a direction toward the conductor end 100 of the first electrical conductor, thereby forming a clamping force on the conductor end 100 of the first electrical conductor.

[0089] Exemplarily, the second end 2023 extends downward from the spring leg body 2022 (ie Figure 10 The spring leg body 2022 extends in the direction a) shown in the figure and away from the connecting strip 201, so that there is an angle between the spring leg body 2022 and the second end 2023, and the second end 2023 extends in a direction away from the conductor end 100 of the first electrical conductor, thereby forming a second opening 2024, which is used for the conductor end 100 of the first electrical conductor to be inserted into the second clamping space 2034.

[0090] For example, the spring leg 202 further includes a spring piece 2025 extending from the spring leg body 2022 to the inside of the second clamping space 2034. The spring leg body 2022 includes a third opening 2026. The spring piece 2025 is located in the third opening 2026. The spring piece 2025 is used to engage with the limiting groove 104 ( Figure 2A (visible) cooperates to limit the conductor end 100 of the first electrical conductor.

[0091] Among them, the first direction (i.e. Figure 3 X direction shown), the second direction (i.e. Figure 3 The Y direction shown) and the third direction (i.e. Figure 3 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.

[0092] For example, refer to Figure 9 , Figure 9 The fixing structure 200 is shown in its unbent state. The fixing structure 200 can be made of a material that is easily bendable. The fixing structure 200 provided in this embodiment of the present application is an integrally formed structure that is simple, has low material costs, and can improve fixing strength and stability while also saving logistics costs, simplifying the process, and reducing labor costs.

[0093] Combine Figure 3and Figure 4 ,Will Figure 9 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 second clamping space 2034 in the direction b shown in FIG. Figure 3 The temperature sensor 300 is inserted and fixed in the first clamping space 2051 and the holding space 2043 in the direction a shown. The first protrusion 302 and the second protrusion 303 on the insulating housing 301 are used to limit the temperature sensor 300 in all directions, and the spring leg 202 and the spring clip 2025 are used to limit the temperature sensing target (i.e., the conductor end 100 of the first conductor) in all directions. The matching strength and reliability of the clamping portion 205 and the temperature sensor 300 are greatly improved, the assembly has a higher clamping force, the limit is more stable, and the shaking problem is improved. In addition, the two functions of shaking, misalignment and error prevention can be achieved by only four limit portions 203, which improves the assembly of the production line. At the same time, the structure is simple, and the materials and process steps are reduced.

[0094] 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 holding portion, the holding portion comprising a first portion and a second portion, the first portion and the second portion being respectively connected to the connecting portion and disposed on both sides of the connecting portion, the first portion and the second portion being configured to bend toward each other to form a holding space, the holding space being configured to hold the temperature sensor; The clamping portion and the embracing portion are spaced apart along the first direction, and the clamping portion and the connecting portion are spaced apart along the second direction to form a first clamping space, and the first clamping space is used to clamp the bottom of the temperature sensor, wherein the second direction intersects with the first direction.

2. The fixing structure according to claim 1, wherein: Along a third direction, both sides of the first clamping space are open, wherein the third direction intersects with the first direction and the second direction respectively.

3. The fixing structure according to claim 1, wherein: The clamping portion includes a first connecting member, a clamping portion body and a first end portion, wherein: The first connecting member is used to connect the clamping portion body to the connecting portion at the bottom of the connecting portion; The clamping portion body extends upward from the first connecting member and toward the connecting portion; and The first end portion extends upward from the clamping portion body and away from the connecting portion, A first opening is formed between the first end portion and the connecting portion, and the first opening is used for allowing the temperature sensor to be inserted into the first clamping space.

4. 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.

5. The fixing structure according to claim 1, wherein: The fixing structure further includes a spring leg connected to the connecting portion; a plurality of limiting portions, the plurality of limiting portions being connected to the connecting portion and spaced apart on both sides of the connecting portion; the plurality of limiting portions, the spring legs, and the connecting portion jointly forming a second clamping space for clamping a temperature sensing target; one of the limiting portions being configured to abut against a first chamfer on the temperature sensing target; and at least one of the limiting portions being connected to the clamping portion; Along the second direction, the second clamping space and the first clamping space are located on opposite sides of the connecting portion.

6. The fixing structure according to claim 5, wherein: The spring leg further includes an elastic sheet, which is used to cooperate with a limiting groove on the temperature sensing target to limit the temperature sensing target.

7. The fixing structure according to claim 5, wherein: Each of the limiting parts includes an extension piece and a limiting piece, one end of the extension piece is connected to the connecting part, and the other end is connected to the limiting piece. Along the third direction, the limiting piece includes an abutting surface, and the abutting surface abuts against the side of the temperature sensing target.

8. 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 7; and Temperature sensor, The temperature sensor is inserted into and fixed in the first clamping space and the holding space, and the conductor end of the first electrical conductor of the at least one electrical conductor is inserted into the second clamping space as a temperature sensing target.

9. The motor system according to claim 8, wherein: The conductor end of the first electrical conductor is provided with a first chamfer, the first chamfer includes a first surface and a second surface, the first surface extends along the first direction, the second surface is arranged at an angle to the first surface, and the first surface abuts against one of the abutting surfaces of the fixing structure.

10. The motor system according to claim 8, 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.

11. The motor system according to claim 8, 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 first clamping space and the clamping 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 the clamping part of the fixed structure. Along the second direction, the first protrusion and the second protrusion are arranged on opposite sides of the insulating shell and are located in different planes.

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