Motor

Abstract

The present disclosure relates to a motor including: a stator including a wound coil; a terminal provided in electrical contact with the coil; a holder configured to support the terminal; a sensor holder provided on the holder; and a temperature sensor which is not supported on the sensor holder and is provided in contact with the coil, thereby obtaining beneficial effects of simplifying a structure and an assembly process and improving stability and reliability.

Description

Technical Field

[0001] The present disclosure relates to a motor, and more particularly to a motor capable of simplifying a structure and an assembly process and improving stability and reliability. Background Art

[0002] Hybrid vehicles or electric vehicles, which are called eco-friendly vehicles, generate driving force by using an electric motor (hereinafter referred to as a "drive motor") that obtains a rotational force from electric energy.

[0003] Generally, the drive motor includes a stator coupled to a housing and a rotor rotatably disposed in the stator with a predetermined air gap from the stator.

[0004] The stator includes a stator core provided by stacking electrical steel sheets and a stator coil wound around the stator core.

[0005] A bus bar is disposed on an upper side of the stator, and the stator coil is connected to an external power source through the bus bar.

[0006] The bus bar may be configured to include a plurality of terminals inside an annular holder, and the terminals may be configured as a combination of phase terminals connected to U-phase, V-phase, and W-phase power sources and a neutral terminal connecting the phase terminals.

[0007] Meanwhile, high-temperature heat is generated when the motor operates. If the temperature of the motor rises to a predetermined temperature or higher, the efficiency and lifespan of the motor may deteriorate. Therefore, when the temperature of the motor rises to a predetermined temperature or higher, it is necessary to monitor the temperature of the motor and stop the operation of the motor.

[0008] In the related art, in order to mount a temperature sensor for monitoring the temperature of the motor on the coil, it is necessary to support the temperature sensor disposed on the coil by using a separate fixture, and it is necessary to fix the temperature sensor by using an adhesive (such as epoxy resin), which causes problems of complex structure and manufacturing process and increased manufacturing cost.

[0009] In addition, in the related art, when the motor vibrates or an external shock is applied to the motor, the bonding portion of the temperature sensor is easily damaged or pulled out from the coil.

[0010] Therefore, various studies have recently been conducted to simplify the structure for mounting the temperature sensor and improve stability and reliability, but the research results are still insufficient. Therefore, it is necessary to develop a technology to simplify the structure for mounting the temperature sensor and improve stability and reliability. Summary of the Utility Model

[0011] The present disclosure has been made to provide a motor capable of simplifying a structure and an assembly process and improving stability and reliability.

[0012] In particular, the present disclosure has been made to install a temperature sensor for monitoring the temperature of a motor on a coil without using a separate fixture and adhesive.

[0013] The present disclosure has been made to stably maintain the installation state of the temperature sensor and minimize damage or extraction of the temperature sensor.

[0014] The present disclosure has been made to reduce costs, improve work efficiency, and shorten manufacturing time.

[0015] The present disclosure has been made to minimize misassembly of the temperature sensor and improve accuracy.

[0016] To achieve the above object, an exemplary embodiment of the present disclosure provides a motor including: a stator including a wound coil; a terminal configured to be in electrical contact with the coil; a holder configured to support the terminal; a sensor holder disposed on the holder; and a temperature sensor supported on the sensor holder and configured to be in contact with the coil.

[0017] This is to simplify the structure of the motor and the process of assembling the motor and improve the stability and reliability of the motor.

[0018] That is, in the related art, to install a temperature sensor for monitoring the temperature of a motor on a coil, it is necessary to support the temperature sensor disposed on the coil by using a separate fixture, and it is necessary to fix the temperature sensor by an adhesive (such as epoxy resin), which causes problems of complex structure and manufacturing process and increased manufacturing cost. In addition, in the related art, when the motor vibrates or an external shock is applied to the motor, the bonding portion of the temperature sensor is easily damaged or extracted from the coil.

[0019] In contrast, in the embodiment of the present disclosure, the temperature sensor is supported in contact with the coil by means of a sensor holder disposed on the holder. Therefore, the advantageous effects of simplifying the structure and the assembly process and improving the stability and reliability can be obtained.

[0020] In addition, in the embodiment of the present disclosure, the temperature sensor is supported in contact with the coil by means of the sensor holder without using a separate fixture and adhesive, thereby simplifying the process of assembling the temperature sensor. Therefore, the advantageous effects of reducing costs and improving productivity can be obtained.

[0021] In addition, in an embodiment of the present disclosure, the temperature sensor is provided in a state where the temperature sensor and the (pre-assembled) holder are modularized together, such that the temperature sensor modularized with the holder can be assembled with the holder during the process of assembling the holder (the temperature sensor can be in contact with the coil while assembling the holder). Therefore, an additional process of assembling the temperature sensor can be excluded and the process of assembling the temperature sensor can be automated.

[0022] The holder can have various structures capable of supporting the terminals.

[0023] According to an exemplary embodiment of the present disclosure, the holder can include: a holder body configured to support the terminals; and a holder cover stacked on the holder body and configured to cover the terminals, and a sensor holder can be provided on the holder cover.

[0024] According to an exemplary embodiment of the present disclosure, the temperature sensor can include: a sensor body; and a sensor cable electrically connected to the sensor body.

[0025] The sensor holder can be variably changed in number and position according to required conditions and design specifications.

[0026] According to an exemplary embodiment of the present disclosure, the sensor holder can include: a first sensor holder configured to support the sensor body; and a second sensor holder spaced apart from the first sensor holder in the circumferential direction of the holder and configured to support the sensor cable.

[0027] The sensor holder can have various structures capable of being supported on the holder to bring the temperature sensor into contact with the coil.

[0028] According to an exemplary embodiment of the present disclosure, the sensor holder can include: a first sensor support portion provided on the inner circumferential surface of the holder and protruding from one surface of the holder facing the coil; and a second sensor support portion provided at an end of the first sensor support portion and configured such that the first sensor support portion and the second sensor support portion jointly define a sensor accommodation portion for accommodating the temperature sensor.

[0029] According to an exemplary embodiment of the present disclosure, the second sensor support portion can be configured to elastically move toward or away from the first sensor support portion, and the temperature sensor can be elastically supported between the first sensor support portion and the second sensor support portion.

[0030] As described above, in an embodiment of the present disclosure, the sensor body is elastically supported between the first sensor support portion and the second sensor support portion. Therefore, an advantageous effect can be obtained in which the extraction of the temperature sensor is minimized and the arrangement state of the temperature sensor relative to the sensor holder and the coil is maintained more stably.

[0031] According to an exemplary embodiment of the present disclosure, the motor may include: a guide protrusion provided on an inner surface of the holder cover and configured to support the first sensor support portion on the holder cover.

[0032] As described above, in an embodiment of the present disclosure, the first sensor support portion is supported by the guide protrusion. Therefore, an advantageous effect can be obtained in which the deformation (e.g., bending deflection) of the first sensor support portion is minimized and the arrangement state of the temperature sensor is maintained more stably.

[0033] According to an exemplary embodiment of the present disclosure, the motor may include: a first guide groove provided in the holder body and configured to receive the guide protrusion; and a second guide groove provided in the holder body and configured to communicate with the first guide groove and receive the first sensor support portion.

[0034] As described above, in an embodiment of the present disclosure, the guide protrusion and the first sensor support portion are received in the first guide groove and the second guide groove, so that the guide protrusion and the first sensor support portion can be more firmly fixed to the holder body. Therefore, an advantageous effect can be obtained in which the mounting state of the temperature sensor is stably maintained and damage to the temperature sensor and extraction of the temperature sensor are minimized.

[0035] According to an exemplary embodiment of the present disclosure, the motor may include: a coupling hole provided in the holder body; and a snap coupling portion provided on the holder cover and snap-coupled to the coupling hole.

[0036] As described above, in an embodiment of the present disclosure, the snap coupling portion provided on the holder cover is coupled to the coupling hole provided in the holder body, which can stably maintain the state in which the holder cover presses the temperature sensor against the coil. Therefore, a beneficial effect can be obtained in which the contact state between the temperature sensor and the coil is maintained more stably.

[0037] In addition, in the case where the attitude and position of the snap coupling portion are not aligned with the coupling hole, the snap coupling portion cannot be accurately inserted into the coupling hole, and the holder cover is provided to be movable (rotated) relative to the holder body in an abnormal attitude. Therefore, an operator can easily identify whether the holder cover is misassembled.

[0038] According to an exemplary embodiment of the present disclosure, the motor may include a support groove provided in one surface of the holder body facing the holder cover, and a support protrusion provided on the holder cover and received in the support groove.

[0039] As described above, in the embodiments of the present disclosure, the support protrusion and the support groove are provided between adjacent coils. Therefore, advantageous effects such as improved insulation performance, more effectively suppressing vibration and noise, and minimizing the extraction of foreign substances generated during the process of fusing the coil and the terminal can be obtained.

[0040] According to an exemplary embodiment of the present disclosure, the temperature sensor and the sensor holder may be integrated by injection molding. Description of the Drawings

[0041] Figure 1 is a diagram for explaining a motor according to an embodiment of the present disclosure.

[0042] Figure 2 is an exploded perspective view for explaining a motor according to an embodiment of the present disclosure.

[0043] Figures 3 to 5 is a diagram for explaining a holder of a motor according to an embodiment of the present disclosure.

[0044] Figure 6 is a diagram for explaining a sensor holder of a motor according to an embodiment of the present disclosure.

[0045] Figures 7 to 9 is a diagram for explaining a motor according to another embodiment of the present disclosure. Detailed Description of the Embodiments

[0046] Hereinafter, exemplary embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.

[0047] However, the technical spirit of the present disclosure is not limited to some embodiments described herein, but can be implemented in various different forms. Within the scope of the technical spirit of the present disclosure, one or more constituent elements in the embodiments can be selectively combined and used alternatively.

[0048] In addition, unless otherwise specifically and clearly defined and described, the terms (including technical terms and scientific terms) used in the embodiments of the present disclosure can be understood as the meanings commonly understood by those of ordinary skill in the art to which the present disclosure pertains. The meanings of common terms such as those defined in a dictionary can be interpreted in consideration of the context of the related art.

[0049] In addition, the terms used in the embodiments of the present disclosure are used to explain the embodiments, rather than to limit the present disclosure.

[0050] In this specification, unless otherwise specifically stated, the singular form may also include the plural form. The expression "at least one (or one or more) of A, B, and C" may include one or more of all combinations that can be made by combining A, B, and C.

[0051] In addition, terms such as first, second, A, B, (a), and (b) may be used to describe the components of the embodiments of the present disclosure.

[0052] These terms are only for the purpose of distinguishing one component from another, and the nature, sequence, or order of the components is not limited by these terms.

[0053] In addition, when a component is described as "connected", "coupled", or "attached" to another component, a component may be directly connected, coupled, or attached to another component, or connected, coupled, or attached to another component through yet another component interposed therebetween.

[0054] In addition, the expression "a component is provided or disposed above (on) or below (under) another component" includes not only the case where the two components are in direct contact with each other, but also the case where one or more other components are provided or disposed between the two components. The expression "above (on) or below (under)" may represent the downward direction and the upward direction based on one component.

[0055] Referring to Figures 1 to 9 , according to an embodiment of the present disclosure, the motor 10 includes a stator 100 having a wound coil 110, a terminal 210 configured to be in electrical contact with the coil 110, a holder 240 configured to support the terminal 210, a sensor holder 270 disposed on the holder 240, and a temperature sensor 300 supported on the sensor holder 270 and configured to be in contact with the coil 110.

[0056] As a reference, the motor 10 according to an embodiment of the present disclosure can be installed in various objects according to required conditions and design specifications. The present disclosure is not restricted or limited by the type and structure of the object.

[0057] For example, the motor 10 according to an embodiment of the present disclosure can be used as a drive motor for an eco-friendly vehicle (such as a hybrid vehicle and / or an electric vehicle) that obtains driving force from electric energy.

[0058] For example, the motor 10 may be an inner rotor type synchronous motor and include a stator 100 disposed on a housing, and a rotor (not shown) rotatably mounted in the stator 100 with a predetermined air gap from the stator 100. The bus bar unit 200 may be connected to the stator 100.

[0059] Reference Figure 1 and Figure 2 The stator 100 may be disposed on a housing (not shown). The coil 110 is wound around the stator 100 to cause an electrical interaction between the stator and the rotor.

[0060] For example, the stator 100 may include a plurality of split cores 102 arranged to jointly define an annular shape, and a support ring (not shown) arranged to surround the outer peripheral surface of the plurality of split cores 102.

[0061] The split cores 102 may be variably changed in number and structure according to required conditions and design specifications. The present disclosure is not restricted or limited by the number of split cores 102 and the structure of the split cores 102.

[0062] More specifically, the split cores 102 may be configured by stacking a plurality of electrical steel sheets in the axial direction of the rotor.

[0063] A bobbin (not shown) (e.g., made of plastic) is disposed around each of the split cores 102, and the coil 110 is wound around the bobbin.

[0064] In the embodiments of the present disclosure shown and described above, an example in which the stator 100 includes a plurality of split cores 102 has been described. However, according to another embodiment of the present disclosure, the stator may include a single core.

[0065] The rotor is configured to rotate by the electrical interaction between the rotor and the stator 100.

[0066] For example, the rotor may include a rotor core (not shown) and magnets (not shown). The rotor core may have a structure made by stacking a plurality of circular plates, each circular plate being arranged in the form of a thin steel sheet or in the form of a bin.

[0067] A hole (not shown) may be provided at the center of the rotor, and a shaft may be coupled to the hole. Protrusions (not shown) may protrude from the outer peripheral surface of the rotor core and guide the magnets. The magnets may be attached to the outer peripheral surface of the rotor core and spaced apart from each other at a predetermined interval in the circumferential direction of the rotor core.

[0068] In addition, the rotor may include a can member (not shown) configured to surround the magnets and prevent the magnets from separating.

[0069] The bus bar unit 200 may include terminals 210 and a holder 240, and is disposed above (or below) the stator 100.

[0070] The terminals 210 electrically connect the coil 110 of the stator 100 to an external power source.

[0071] According to an exemplary embodiment of the present disclosure, the terminal 210 may be at least one of phase terminals (U-phase terminal, V-phase terminal, and W-phase terminal) respectively connected to a U-phase power supply, a V-phase power supply, and a W-phase power supply, and a neutral terminal for electrically connecting the phase terminals. For example, the bus bar unit may include a total of four terminals (U-phase terminal, V-phase terminal, W-phase terminal, and neutral terminal).

[0072] More specifically, the terminal 210 includes a body (not shown) accommodated in the holder 240 and a terminal portion (not shown) protruding from the inner peripheral surface of the body and connected to the coil 110.

[0073] The body can be variously changed in structure and shape according to required conditions and design specifications. For example, the body may have a single-layer structure and be provided as a strip member in the form of an arc (or loop) having a predetermined curvature.

[0074] According to another embodiment of the present disclosure, the body may have a double-layer structure (multi-layer structure) including a bent portion.

[0075] The terminal portion is provided on the inner peripheral surface of the body. The end of the coil 110 of the stator 100 is connected to the terminal portion.

[0076] The terminal portion may have various structures capable of being electrically connected to the end of the coil (for example, fused to the end of the coil). The present disclosure is not restricted or limited by the structure and shape of the terminal portion.

[0077] In addition, the terminal 210 may include a power terminal portion (not shown) protruding from the outer peripheral surface of the holder 240.

[0078] The power terminal portion extends from the outer surface of the body and protrudes from the outer peripheral surface of the holder 240. The power terminal portion may be electrically connected to each of the external power cables corresponding to the respective phases (U-phase, V-phase, and W-phase).

[0079] Refer to Figures 2 to 5 The holder 240 supports the arrangement state of the terminal 210 and electrically insulates the terminal 210.

[0080] The holder 240 may have various structures capable of supporting the terminal 210. The present disclosure is not restricted or limited by the structure and shape of the holder 240.

[0081] According to an exemplary embodiment of the present disclosure, the holder 240 may include a holder body 250 configured to support the terminal 210, and a holder cover 260 stacked on the holder body 250 to cover the terminal 210.

[0082] For example, the retainer body 250 may include a body retainer portion 250a and a terminal retainer portion 250b. The body retainer portion 250a is configured to support the body of the terminal 210, and the terminal retainer portion 250b is provided on the inner circumferential surface of the body retainer portion 250a and is configured such that the terminal portion of the terminal 210 is disposed (e.g., placed) on the terminal retainer portion 250b.

[0083] The body retainer portion 250a may vary differently in terms of material and shape according to required conditions and design specifications. The present disclosure is not restricted or limited by the material and shape of the body retainer portion 250a.

[0084] For example, the body retainer portion 250a may be provided in the form of a hollow ring surrounding the body. The body retainer portion 250a may be configured as a molded product (e.g., made of an insulating material) provided by injection molding.

[0085] The terminal retainer portion 250b is integrated with the inner circumferential surface of the body retainer portion 250a to partially cover the upper region of the stator 100 (the upper part of the coil 110). The terminal retainer portion 250b is configured to support the terminal portion.

[0086] The terminal retainer portion 250b may have various structures capable of supporting the terminal portion. The present disclosure is not restricted or limited by the structure of the terminal retainer portion 250b. For example, one end (outer circumferential end) of the terminal retainer portion 250b may be fixed to the inner circumferential surface of the body retainer portion 250a, and the other end (inner circumferential end) of the terminal retainer portion 250b may be provided as a free end in the form of a cantilever.

[0087] In particular, the terminal retainer portion 250b may be integrated with the body retainer portion 250a by injection molding. According to another embodiment of the present disclosure, the terminal retainer portion may be separately manufactured and then coupled to the body retainer portion.

[0088] The temperature sensor 300 is configured to monitor the temperature of the coil 110 (the temperature of the motor 10).

[0089] A typical contact temperature sensor 300 capable of monitoring the temperature of the motor 10 may be used as the temperature sensor 300. The present disclosure is not restricted or limited by the type and sensing method of the temperature sensor 300.

[0090] According to an exemplary embodiment of the present disclosure, the temperature sensor 300 may include a sensor body 310 (e.g., a thermocouple or a thermistor) and a sensor cable 320 electrically connected to the sensor body 310.

[0091] The sensor body 310 and the sensor cable 320 may be supported by the sensor holder 270. An end of the sensor cable 320 may be exposed to an outer surface of the holder 240 through a through hole 259 provided in the holder 240.

[0092] The sensor holder 270 is provided on the holder 240 to support the temperature sensor 300 in contact with the coil 110 without using a separate fixture and adhesive.

[0093] According to an exemplary embodiment of the present disclosure, the sensor holder 270 may be integrated with the holder cover 260 by injection molding. According to another embodiment of the present disclosure, the sensor holder may be separately manufactured from the holder and coupled (fastened or assembled) to the holder.

[0094] The sensor holder 270 may be variably changed in number and position according to required conditions and design specifications. The present disclosure is not limited or restricted by the number and position of the sensor holder 270.

[0095] According to an exemplary embodiment of the present disclosure, the sensor holder 270 may include a first sensor holder 270a configured to support the sensor body 310, and a second sensor holder 270b spaced apart from the first sensor holder 270a in a circumferential direction of the holder 240 and configured to support the sensor cable 320.

[0096] Hereinafter, an example in which only one first sensor holder 270a and three second sensor holders 270b are provided on the holder 240 and spaced apart from each other will be described. Alternatively, two or fewer second sensor holders may be provided on the holder, or four or more second sensor holders may be provided on the holder.

[0097] The sensor holder 270 may have various structures capable of being supported on the holder 240 to bring the temperature sensor 300 into contact with the coil 110. The present disclosure is not limited or restricted by the structure and shape of the sensor holder 270.

[0098] According to an exemplary embodiment of the present disclosure, the sensor holder 270 may include a first sensor support portion 272 and a second sensor support portion 274. The first sensor support portion 272 is provided on an inner circumferential surface of the holder 240 and protrudes from a surface of the holder 240 facing the coil 110. The second sensor support portion 274 is provided at an end of the first sensor support portion 272 and is configured such that the first sensor support portion 272 and the second sensor support portion 274 together define a sensor accommodation portion 276 for accommodating the temperature sensor 300.

[0099] For example, the first sensor support portion 272 may have an approximately straight plate shape. The second sensor support portion 274 may have an approximately "L" shape. The sensor accommodation portion 276 may be disposed between the first sensor support portion 272 and the second sensor support portion 274 and have an approximately "U" shape with an upper surface facing the coil 110 (based on Figure 2 )).

[0100] Reference Figure 6 , according to an exemplary embodiment of the present disclosure, the second sensor support portion 274 may be configured to move elastically toward or away from the first sensor support portion 272. The temperature sensor 300 may be elastically supported between the first sensor support portion 272 and the second sensor support portion 274.

[0101] Specifically, the interval between the first sensor support portion 272 and the second sensor support portion 274 (the width of the sensor accommodation portion 276) may be slightly smaller than the width of the sensor body 310 and slightly larger than the width of the sensor cable 320 in the radial direction of the holder 240.

[0102] As described above, in an embodiment of the present disclosure, the sensor body 310 is elastically supported between the first sensor support portion 272 and the second sensor support portion 274. Therefore, an advantageous effect of minimizing the extraction of the temperature sensor 300 and more stably maintaining the arrangement state of the temperature sensor 300 relative to the sensor holder 270 and the coil 110 can be obtained.

[0103] In addition, according to an exemplary embodiment of the present disclosure, the depth of the sensor accommodation portion 276 (the depth in the up / down direction based on Figure 6 ) may be smaller than the height of the sensor body 310 (the height in the up / down direction based on Figure 6 ).

[0104] As described above, in an embodiment of the present disclosure, in a state where the sensor body 310 is accommodated in the sensor accommodation portion 276, a part (lower end) of the sensor body 310 is exposed to (protrudes into) the outside of the sensor accommodation portion 276, so that the contact state between the sensor body 310 and the coil 110 can be more stably maintained.

[0105] According to an exemplary embodiment of the present disclosure, the motor 10 may include a guide protrusion 266 disposed on the inner surface of the holder cover 260 and configured to support the first sensor support portion 272 on the holder cover 260.

[0106] Specifically, the guiding protrusion 266 can be integrated with the retainer cover 260 by injection molding. According to another embodiment of the present disclosure, the guiding protrusion can be manufactured separately and then coupled to the retainer cover.

[0107] The guiding protrusion 266 can have various structures capable of supporting the first sensor support portion 272 on the retainer cover 260. The present disclosure is not limited or restricted by the structure and shape of the guiding protrusion 266.

[0108] For example, the guiding protrusion 266 can have an approximately straight plate shape. The first sensor support portion 272 and the guiding protrusion 266 can be connected to jointly define an approximately "T" shape. Alternatively, the guiding protrusion can be provided in a protruding or curved shape.

[0109] As described above, in an embodiment of the present disclosure, the first sensor support portion 272 is supported by the guiding protrusion 266. Therefore, an advantageous effect can be obtained of minimizing the deformation (e.g., bending deflection) of the first sensor support portion 272 and more stably maintaining the arrangement state of the temperature sensor 300.

[0110] Specifically, the motor 10 can include a first guiding groove 252 provided in the retainer body 250 and configured to accommodate the guiding protrusion 266, and a second guiding groove 254 provided in the retainer body 250 and configured to communicate with the first guiding groove 252 and accommodate the first sensor support portion 272.

[0111] For example, the first guiding groove 252 and the second guiding groove 254 can be connected to jointly define a substantially "T" shape.

[0112] As described above, in an embodiment of the present disclosure, the guiding protrusion 266 and the first sensor support portion 272 are accommodated in the first guiding groove 252 and the second guiding groove 254, such that the guiding protrusion 266 and the first sensor support portion 272 can be more firmly fixed to the retainer body 250. Therefore, an advantageous effect can be obtained of stably maintaining the installation state of the temperature sensor 300 and minimizing the damage to the temperature sensor 300 and the extraction of the temperature sensor 300.

[0113] According to an exemplary embodiment of the present disclosure, the motor 10 can include a coupling hole 256 provided in the retainer body 250, and a snap coupling portion 262 provided on the retainer cover 260 and snap-coupled to the coupling hole 256.

[0114] The snap coupling portion 262 can be elastically snap-coupled to the coupling hole 256 by using the elasticity of a material (e.g., a plastic material). The present disclosure is not limited or restricted by the shape and structure of the snap coupling portion 262.

[0115] For example, the coupling hole 256 may be provided in the upper surface of the holder body 250 facing the holder cover 260 (the upper surface of the main holder portion), and the snap coupling portion 262 may be provided on the bottom surface of the holder cover 260 facing the holder body 250.

[0116] In particular, the snap coupling portions 262 may be provided as a plurality of snap coupling portions 262 spaced apart from each other in the circumferential direction of the holder cover 260.

[0117] As described above, in the embodiments of the present disclosure, the snap coupling portion 262 provided on the holder cover 260 is coupled to the coupling hole 256 provided in the holder body 250, which can stably maintain the state in which the holder cover 260 presses the temperature sensor 300 against the coil 110. Therefore, the beneficial effect of more stably maintaining the contact state between the temperature sensor 300 and the coil 110 can be obtained.

[0118] In addition, in the case where the attitude and position of the snap coupling portion 262 are not aligned with the coupling hole 256, the snap coupling portion 262 cannot be accurately inserted into the coupling hole 256, and the holder cover 260 is arranged to be movable (rotated) relative to the holder body 250 in an abnormal attitude. Therefore, the operator can easily identify whether the holder cover 260 is misassembled.

[0119] According to an exemplary embodiment of the present disclosure, the motor 10 may include a support groove 258 provided in one surface of the holder body 250 facing the holder cover 260, and a support protrusion 264 provided on the holder cover 260 and received in the support groove 258.

[0120] The support protrusion 264 may have various structures according to required conditions and design specifications. The present disclosure is not limited or restricted by the structure and shape of the support protrusion 264.

[0121] For example, the support protrusion 264 may have an approximate straight plate shape. The support protrusions 264 may be provided as a plurality of support protrusions 264 spaced apart from each other in the circumferential direction of the holder cover 260 and provided between adjacent coils 110.

[0122] In particular, the support protrusion 264 may be integrated with the holder cover 260 by injection molding. According to another embodiment of the present disclosure, the guiding protrusion may be separately manufactured and then coupled to the holder cover.

[0123] As described above, in the embodiments of the present disclosure, the support protrusions 264 and the support grooves 258 are provided between adjacent coils 110. Therefore, beneficial effects such as improved insulation performance, more effective suppression of vibration and noise, and minimization of the extraction of foreign matter generated during the process of fusing the coil 110 and the terminal 210 can be obtained.

[0124] Meanwhile, in the embodiments of the present disclosure shown and described above, an example of assembling a temperature sensor to a sensor holder (accommodated in a sensor accommodation part) of a holder has been described. However, according to another embodiment of the present disclosure, the temperature sensor 300 and the sensor holder 270 can be integrated by injection molding.

[0125] Referring to Figures 7 to 9 , a motor 10 according to an embodiment of the present disclosure may include a stator 100 having a wound coil 110, a terminal 210 arranged to be in electrical contact with the coil 110, a holder 240' configured to support the terminal 210, a sensor holder 270' provided on the holder 240', and a temperature sensor 300 supported on the sensor holder 270' and arranged to be in contact with the coil 110. The temperature sensor 300 can be integrated with the sensor holder 270' by injection molding.

[0126] The holder 240' can have various structures capable of being integrated with the temperature sensor 300 by injection molding. The present disclosure is not limited or restricted by the structure and shape of the holder 240'.

[0127] For example, the holder 240' can be arranged to have a shape that only includes a holder body (see 250 in Figure 2 without a separate holder cover (see 260 in Figure 2 ).

[0128] According to an exemplary embodiment of the present disclosure, the temperature sensor 300 and the terminal 210 together can be integrated with the holder 240' by insert injection molding.

[0129] The sensor holder 270' can have various structures capable of being supported on the holder 240 to bring the temperature sensor 300 into contact with the coil 110. The present disclosure is not limited or restricted by the structure and shape of the sensor holder 270'.

[0130] According to the above embodiments of the present disclosure, beneficial effects such as simplified structure and assembly process and improved stability and reliability can be obtained.

[0131] Specifically, in the embodiments of the present disclosure, a temperature sensor for monitoring the temperature of the motor can be mounted on the coil without using a separate fixture and adhesive.

[0132] In addition, according to an embodiment of the present disclosure, advantageous effects can be obtained of stably maintaining the installation state of the temperature sensor and minimizing damage to the temperature sensor and extraction of the temperature sensor.

[0133] In addition, according to an embodiment of the present disclosure, advantageous effects can be obtained of reducing costs, improving work efficiency, and reducing manufacturing time.

[0134] In addition, according to an embodiment of the present disclosure, advantageous effects can be obtained of minimizing misassembly of the temperature sensor and improving accuracy.

[0135] Although the embodiments have been described above, the embodiments are merely illustrative and are not intended to limit the present disclosure. Those skilled in the art can understand that various modifications and applications not described above can be made to the embodiments without departing from the inherent features of the embodiments. For example, the corresponding constituent elements specifically described in the embodiments can be modified and then implemented. In addition, it should be understood that the differences related to the modifications and applications are included within the scope of the present disclosure defined by this application.

[0136] Cross - reference to related applications

[0137] This application claims the priority and benefits of Korean Patent Application No. 10 - 2023 - 0161422, filed with the Korean Intellectual Property Office on November 20, 2023, the entire content of which is incorporated herein by reference.

Claims

1. A motor, characterized in that, The motor includes: A stator, the stator including a wound coil; Terminals, the terminals being arranged to be in electrical contact with the wound coil; A holder, the holder being configured to support the terminals; A sensor holder, the sensor holder being provided on the holder; and A temperature sensor, the temperature sensor being supported on the sensor holder and arranged to be in contact with the wound coil.

2. The motor according to claim 1, characterized in that The holder includes: A holder body, the holder body being configured to support the terminals; and A holder cover, the holder cover being stacked on the holder body and being configured to cover the terminals, and wherein, the sensor holder is provided on the holder cover.

3. The motor according to claim 2, characterized in that, The sensor holder includes: A first sensor support portion, the first sensor support portion being provided on the inner circumferential surface of the holder and protruding from a surface of the holder facing the wound coil; and A second sensor support portion, the second sensor support portion being provided at an end of the first sensor support portion and being configured such that the first sensor support portion and the second sensor support portion jointly define a sensor accommodation portion for accommodating the temperature sensor.

4. The motor according to claim 3, characterized in that, The second sensor support portion is configured to elastically move towards or away from the first sensor support portion, and the temperature sensor is elastically supported between the first sensor support portion and the second sensor support portion.

5. The motor according to claim 3, characterized in that, The motor includes: A guiding protrusion, the guiding protrusion being provided on the inner surface of the holder cover and being configured to support the first sensor support portion on the holder cover.

6. The motor according to claim 5, characterized in that, The motor includes: A first guiding groove, the first guiding groove being provided in the holder body and being configured to accommodate the guiding protrusion; and A second guiding groove, the second guiding groove being provided in the holder body and being configured to communicate with the first guiding groove and accommodate the first sensor support portion.

7. The motor according to claim 2, characterized in that, The motor includes: A coupling hole, the coupling hole being provided in the holder body; and A snap coupling portion, the snap coupling portion being provided on the holder cover and being snap-coupled to the coupling hole.

8. The motor according to claim 2, wherein The motor includes: A guiding groove, the guiding groove being provided in a surface of the holder body facing the holder cover; and A guiding protrusion, the guiding protrusion being provided on the holder cover and being configured to be accommodated in the guiding groove.

9. The motor according to claim 1, wherein The temperature sensor includes: A sensor body; and A sensor cable, the sensor cable being electrically connected to the sensor body, and wherein, the sensor holder includes: A first sensor holder, the first sensor holder being configured to support the sensor body; and A second sensor holder, the second sensor holder being spaced apart from the first sensor holder in the circumferential direction of the holder and being configured to support the sensor cable.

10. The motor according to claim 1, characterized in that, The temperature sensor is integrated with the sensor holder by injection molding.

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