An electric pump

Abstract

The utility model discloses an electric pump, electric pump includes: motor part, it includes the shaft that extends in the axial, the rotatable rotor of the radial outer side at the shaft, and the stator of opposite configuration with the rotor in the radial, circuit board is configured in the axial one side of motor part, the connecting terminal is configured between the stator and circuit board in the axial, and terminal holding part is kept to connecting terminal, and the stator includes: annular stator core, and the coil part includes the multiple coil main part of installing on stator core and the lead wire, wherein, connecting terminal will coil part with circuit board electricity is connected, and connecting terminal has the multiple 1st groove of crimping coil part's lead wire, and multiple 1st groove is arranged along the width direction of the intersection of connecting terminal with the axial, thereby, can improve the reliability of crimping the lead wire, can reduce the size of connecting terminal in the axial, help electric pump miniaturization in the axial.

Description

Technical Field

[0001] This utility model relates to the field of electromechanical technology, and in particular to an electric pump. Background Technology

[0002] With the rapid development of science and technology, electric pumps are being used more and more widely. Existing electric pumps typically include a motor, a circuit board, and connecting terminals, where the connecting terminals are used to electrically connect the stator coils of the motor and the circuit board.

[0003] It should be noted that the above introduction to the technical background is only for the purpose of providing a clear and complete explanation of the technical solutions of this utility model and facilitating understanding by those skilled in the art. It should not be assumed that these technical solutions are known to those skilled in the art simply because they have been described in the background section of this utility model. Utility Model Content

[0004] The inventors discovered that in existing electric pumps, a connection terminal only has one slot for crimping the lead wire of the stator coil.

[0005] When multiple leads need to be crimped simultaneously in the slot, the front end of the slot is opened by the lead that is crimped first, making it impossible to reliably crimp the lead that is crimped later, resulting in poor contact between the lead and the connection terminal.

[0006] In addition, since multiple leads are arranged sequentially in a slot, the dimensions of the connection terminals in the extension direction of the slot (e.g., axial direction) must be guaranteed in order to accommodate multiple leads in the slot, making it difficult to miniaturize the electric pump in the axial direction.

[0007] To address one or more of the aforementioned problems or other similar issues, this invention provides an electric pump. By providing multiple first grooves for crimping lead wires at the connection terminals, the reliability of crimping the lead wires can be improved, and the axial dimensions of the connection terminals can be reduced, thereby contributing to the axial miniaturization of the electric pump.

[0008] According to one aspect of the present invention, an electric pump is provided, the electric pump comprising: a motor portion including an axially extending shaft, a rotor rotatable at a radially outer position than the shaft, and a stator radially opposite to the rotor; a circuit board disposed on an axial side of the motor portion; a connecting terminal disposed axially between the stator and the circuit board; and a terminal holding member for holding the connecting terminal, the stator including: an annular stator core; and a coil portion including a plurality of coil body portions mounted on the stator core and lead wires, wherein the connecting terminal electrically connects the coil portion to the circuit board, the connecting terminal having a plurality of first grooves for pressing the lead wires of the coil portion, the plurality of first grooves being arranged along a width direction intersecting the axial direction of the connecting terminal.

[0009] In some embodiments, the terminal holding member is provided with a plurality of second slots for the lead wire to pass through, the plurality of second slots being arranged along the width direction.

[0010] In some embodiments, the first groove includes: an extension groove portion extending axially; and an inclined groove portion connected to the extension groove portion, located on the other side of the extension groove portion and extending toward the other side of the axial direction. The second groove includes: a second groove bottom located on the other side of the axial direction. The lead wire includes a first lead wire and a second lead wire, wherein at least a portion of the first lead wire and at least a portion of the second lead wire respectively contact the bottom of the corresponding second groove and respectively contact the extension groove portion of the corresponding first groove. When viewed radially, at least a portion of the first lead wire and at least a portion of the second lead wire are located at the same position axially.

[0011] In some embodiments, the connecting terminal includes a terminal body portion and a leg portion extending from the terminal body portion toward another axial side, the leg portion being provided with a plurality of the first grooves, and the terminal retaining member including a terminal receiving portion for retaining the connecting terminal, wherein the terminal receiving portion has a first recess portion for receiving the leg portion.

[0012] In some embodiments, the terminal body includes a wrist that extends along the width direction and includes a mounting surface located on the opposite side of the axial direction, wherein the mounting surface contacts at least a portion of the terminal receiving portion.

[0013] In some embodiments, when viewed radially, the axial position of the setting surface is within the axial range of the first groove.

[0014] In some embodiments, when the setting surface is in contact with the terminal receiving portion, there is a gap between the front end of the leg and the bottom of the first recess.

[0015] In some embodiments, the terminal receiving portion has a second recess that receives the wrist.

[0016] In some embodiments, the dimension of the terminal body portion in the width direction is larger than its dimension in the axial direction.

[0017] In some embodiments, the stator further includes an insulating member disposed between the stator core and the coil portion, wherein at least a portion of the insulating member and at least a portion of the terminal holding member are located in the same axial position when viewed radially.

[0018] One of the beneficial effects of this utility model embodiment is that by providing multiple first grooves for crimping the lead wires in the connecting terminal, the reliability of crimping the lead wires can be improved, and the axial size of the connecting terminal can be reduced, thereby contributing to the miniaturization of the electric pump in the axial direction.

[0019] The embodiments of this utility model are disclosed in detail with reference to the following description and accompanying drawings. It should be understood that the embodiments of this utility model are not limited in scope thereto. Within the spirit and scope of the appended claims, the embodiments of this utility model include many changes, modifications, and equivalents.

[0020] Features described and / or illustrated for one embodiment may be used in the same or similar manner in one or more other embodiments, combined with features in other embodiments, or substituted for features in other embodiments.

[0021] It should be emphasized that the term "including / contains / has" as used herein refers to the presence of a feature, whole or component, but does not exclude the presence or addition of one or more other features, wholes or components. Attached Figure Description

[0022] The above and other objects, features and advantages of the present invention will become more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which:

[0023] Figure 1 This is a perspective view of one embodiment of the electric pump of this utility model;

[0024] Figure 2 This is a perspective view of one embodiment of the motor part, connecting terminal and terminal holding component of this utility model;

[0025] Figure 3This is a schematic diagram of one embodiment of the connection terminal of this utility model;

[0026] Figure 4 This is a perspective view of one embodiment of the lead wire, connecting terminal, and terminal holding component of this utility model;

[0027] Figure 5 A perspective view of one embodiment of the terminal holding component of this utility model;

[0028] Figure 6 Another perspective view of one embodiment of the terminal holding component of this utility model;

[0029] Figure 7 This is a perspective view of one embodiment of the terminal holding component and insulating component of this utility model. Detailed Implementation

[0030] Referring to the accompanying drawings, the foregoing and other features of this utility model will become apparent from the following description. Specific embodiments of this utility model are specifically disclosed in the description and drawings, illustrating partial embodiments in which the principles of this utility model can be employed. It should be understood that this utility model is not limited to the described embodiments, but includes all modifications and equivalents falling within the scope of the appended claims.

[0031] In embodiments of this utility model, the term "and / or" includes any one and all combinations of one or more of the associated listed terms. The terms "comprising," "including," "having," etc., refer to the presence of the stated features, elements, components, or assemblies, but do not exclude the presence or addition of one or more other features, elements, components, or assemblies.

[0032] In this embodiment of the invention, the singular forms "a," "the," etc., may include the plural forms and should be broadly interpreted as "a kind" or "a class" rather than limited to the meaning of "an." Furthermore, the term "the" should be understood to include both the singular and plural forms unless the context explicitly indicates otherwise. Additionally, the term "according to" should be understood as "at least partially based on…," and the term "based on" should be understood as "at least partially based on…," unless the context explicitly indicates otherwise.

[0033] Furthermore, in the following description of this utility model, for ease of explanation, the direction extending along or parallel to the central axis of the motor section of the electric pump is referred to as "axial direction," the radial direction centered on the central axis is referred to as "radial direction," the direction around the central axis is referred to as "circumferential direction," the side away from the central axis along the radial direction is referred to as "radial outer side," and the side closer to the central axis along the radial direction is referred to as "radial inner side." It is worth noting that the definitions of each direction in this utility model are only for the convenience of explaining the embodiments of this utility model and do not limit the direction of the electric pump or motor section during use and manufacture.

[0034] The embodiments of this utility model will now be described with reference to the accompanying drawings.

[0035] Figure 1 This is a perspective view of one embodiment of the electric pump of this utility model; Figure 2 This is a perspective view of one embodiment of the motor part, connecting terminal and terminal holding component of this utility model; Figure 3 This is a schematic diagram of one embodiment of the connection terminal of this utility model.

[0036] like Figure 1 , Figure 2 and Figure 3 As shown, the electric pump 1 includes: a motor unit 10 ( Figure 2 (shown in the image), circuit board (not shown), connection terminal 20 ( Figure 2 and Figure 3 (shown in the image) and terminal holding member 30 ( Figure 2 (as shown in the image).

[0037] like Figure 2 As shown, the motor unit 10 includes an axially extending shaft (not shown), a rotor (not shown) located radially outward from the shaft and rotatable, and a stator 11 arranged radially opposite to the rotor.

[0038] The circuit board is disposed on one axial side of the motor section 10. The connection terminal 20 is disposed axially between the stator 11 and the circuit board. The terminal holding member 30 holds the connection terminal 20.

[0039] like Figure 2 As shown, the stator 11 includes an annular stator core 111 and a coil section 112. The coil section 112 includes a plurality of coil body sections 1121 mounted on the stator core 111 and lead wires 1122. The connection terminal 20 is used to electrically connect the coil section 112 to the circuit board.

[0040] like Figure 3As shown, the connecting terminal 20 is provided with a plurality of first slots 201 for crimping the lead wires 1122 of the coil section 112. The plurality of first slots 201 are arranged along the width direction of the connecting terminal 20, which intersects the axial direction.

[0041] According to the above embodiment, by providing a plurality of first grooves 201 for crimping lead wires 1122 in the connection terminal 20, the number of lead wires 1122 that need to be crimped in each first groove 201 can be reduced, thereby improving the reliability of crimping the lead wires 1122 and reducing the axial size of the connection terminal 20, which helps to miniaturize the electric pump 1 in the axial direction.

[0042] In some embodiments, the width direction of the connecting terminal 20 intersects the axial direction. For example, the width direction of the connecting terminal 20 may be perpendicular to the axial direction. For instance, the connecting terminal 20 may be flat or curved. Taking a flat connecting terminal 20 as an example, the width direction of the connecting terminal 20 is a straight line perpendicular to the axial direction; taking a curved connecting terminal 20 as an example, when the connecting terminal 20 is bent circumferentially, the width direction of the connecting terminal 20 is circumferential.

[0043] In some embodiments, such as Figure 3 As shown, the first groove 201 of the connecting terminal 20 may include an extension groove 2011 extending axially.

[0044] In some embodiments, the inner diameter of the extension groove 2011 may be smaller than the outer diameter of the lead wire 1122, thereby ensuring reliable crimping of the lead wire 1122.

[0045] Specifically, the difference between the outer diameter of the lead wire 1122 and the inner diameter of the extension groove 2011 is within a preset range. This ensures not only reliable crimping of the lead wire 1122, but also that the lead wire 1122 can be easily crimped into the extension groove 2011.

[0046] In some embodiments, such as Figure 3 As shown, the first groove 201 of the connecting terminal 20 may also include an inclined groove 2012. The inclined groove 2012 is connected to the extension groove 2011, located on the other side of the axial direction of the extension groove 2011 and extending toward the other side of the axial direction.

[0047] In this way, by setting the inclined groove 2012, the lead wire 1122 can be guided into the extension groove 2011.

[0048] In some embodiments, the shape of the inclined groove 2012 can be set according to actual needs, for example, Figure 3As shown, when viewed radially, the wall of the inclined groove 2012 is straight; or, for example, the wall of the inclined groove 2012 has rounded corners, etc. This utility model does not impose specific limitations on the shape of the inclined groove 2012.

[0049] In some embodiments, the number of first slots 201 provided in the connection terminal 20 can be equal to the number of leads 1122. This allows for more reliable crimping of the leads 1122.

[0050] Figure 4 This is a perspective view of one embodiment of the lead wire, connecting terminal, and terminal holding component of this utility model. For example, as... Figure 4 As shown, each first slot 201 is used to crimp one lead wire 1122, that is, there is a one-to-one correspondence between the first slot 201 and the lead wire 1122. However, the present invention is not limited to this. The number of lead wires 1122 provided in the electric pump 1 may be more than the number of first slots 201. In this case, at least one first slot 201 crimps multiple lead wires 1122.

[0051] In some embodiments, such as Figure 4 As shown, the terminal holding member 30 is used to hold the connecting terminal 20. The terminal holding member 30 can be installed on the housing of the stator 11, or it can be installed on the insulating part of the stator 11 (described later). This utility model does not impose specific restrictions on the installation position of the terminal holding member 30.

[0052] Figure 5 This is a perspective view of one embodiment of the terminal holding component of this utility model. Figure 6 This is another perspective view of one embodiment of the terminal holding component of this utility model.

[0053] In some embodiments, such as Figure 5 and Figure 6 As shown, the terminal holding member 30 is provided with a plurality of second slots 301 for the lead wire 1122 to pass through, and the plurality of second slots 301 are arranged along the width direction of the connecting terminal 20.

[0054] In this way, by providing a plurality of second grooves 301 for the lead wire 1122 to pass through in the terminal retaining member 30, the lead wire 1122 can be limited by the second grooves 301, thereby further improving the reliability of crimping the lead wire 1122 and helping to reduce the difficulty of the crimping operation.

[0055] In some embodiments, the number of second slots 301 provided on the terminal retaining member 30 may be equal to the number of leads 1122. This allows for more reliable crimping of the leads 1122.

[0056] For example, such as Figure 4 and Figure 6 As shown, each second slot 301 accommodates one lead wire 1122, that is, there is a one-to-one correspondence between the second slot 301 and the lead wire 1122. However, the present invention is not limited to this, and the number of lead wires 1122 may be greater than the number of second slots 301. In this case, there is at least one second slot 301 for multiple lead wires 1122 to pass through.

[0057] In some embodiments, the electric pump 1 may simultaneously provide multiple first grooves 201 and multiple second grooves 301, the number of first grooves 201 and the number of second grooves 301 may be equal. In this case, viewed axially, the first grooves 201 and second grooves 301 may be aligned in the width direction of the connecting terminal 20, thereby further reducing the difficulty of the crimping operation while ensuring crimping reliability.

[0058] However, the present invention is not limited thereto. In the electric pump 1, the number of the first slot 201 and the number of the second slot 301 may not be equal; or, the first slot 201 and the second slot 301 may be staggered in the width direction of the connecting terminal 20.

[0059] In some embodiments, such as Figure 5 As shown, the second groove 301 includes a second groove bottom 3011, which is located on the other side of the second groove 301 in the axial direction.

[0060] In some embodiments, the bottoms 3011 of the plurality of second grooves may be in the same position in the axial direction, thereby making it easy to position the lead wires 1122 in the same position in the axial direction. However, the present invention is not limited thereto, and the bottoms 3011 of the plurality of second grooves may also be in different positions in the axial direction.

[0061] In some embodiments, such as Figure 4 and Figure 6 As shown, the lead wire 1122 includes a first lead wire 1122-A and a second lead wire 1122-B, wherein at least a portion of the first lead wire 1122-A and at least a portion of the second lead wire 1122-B respectively contact the bottom 3011 of the second groove of the corresponding second groove 301, and respectively contact the extension groove portion 2012 of the corresponding first groove 201.

[0062] For example, such as Figure 4 and Figure 6As shown, when the number of first slots 201 on the connecting terminal 20 is the same as the number of leads 1122, and the number of second slots 301 is the same as both the number of leads 1122 and the number of first slots 201, the connecting terminal 20 has two first slots 201-A and 201-B, the terminal holding member 30 has two second slots 301-A and 301-B, and the leads 1122 include a first lead 1122-A and a second lead 1122-B. The second slot 301-A allows the first lead 1122-A to pass through, and the first slot 201-A is used to crimp the first lead 1122-A. The second slot 301-B allows the second lead 1122-B to pass through, and the first slot 201-B is used to crimp the second lead 1122-B. At least a portion of the first lead-out wire 1122-A contacts the bottom 3011 of the second slot of the second slot 301-A, and at least a portion of the first lead-out wire 1122-A contacts the extension slot portion 2011 of the first slot 201-A. At least a portion of the second lead-out wire 1122-B contacts the bottom 3011 of the second slot of another second slot 301-B, and at least a portion of the second lead-out wire 1122-B contacts the extension slot portion 2011 of another first slot 201-B.

[0063] In this way, since the first lead wire 1122-A and the second lead wire 1122-B are pressed against the extension groove 2011 of the first groove 201-A and 201-B while in contact with the bottom of the second groove 301-A and 301-B, the first lead wire 1122-A and the second lead wire 1122-B can be limited by the bottom of the second groove 301-A and 301-B, thus preventing the first lead wire 1122-A and the second lead wire 1122-B from sliding out of the first groove 201.

[0064] In some embodiments, when viewed radially, at least a portion of the first lead 1122-A and at least a portion of the second lead 1122-B are located at the same position in the axial direction.

[0065] Since the first lead wire 1122-A and the second lead wire 1122-B are at the same axial height, the reaction force of the crimping between the two adjacent leads 1122 becomes the force for further crimping, thereby avoiding crimping failure and further improving the reliability of crimping the leads 1122.

[0066] However, the present invention is not limited thereto. When viewed radially, at least a portion of the first lead wire 1122-A and at least a portion of the second lead wire 1122-B may be located at different positions in the axial direction.

[0067] In some embodiments, such as Figure 3As shown, the connection terminal 20 includes a terminal body portion 202 and a leg portion 203 extending from the terminal body portion 202 toward the other side of the axial direction. The leg portion 203 is provided with a plurality of first grooves 201.

[0068] For example, the connecting terminal 20 includes a terminal body portion 202 and a leg portion 203. The leg portion 203 extends axially away from the terminal body portion 202 based on the terminal body portion 202. The leg portion 203 is integrally connected to the terminal body portion 202 in the same direction, and a plurality of first grooves 201 are provided on the leg portion 203.

[0069] In some embodiments, such as Figure 3 As shown, the leg 203 includes multiple leg sections 2031. For example, when two first slots 201 are provided on the leg 203, the leg 203 is divided into three leg sections 2031 by these two first slots 201, namely the first leg section 2031-1, the second leg section 2031-2 and the third leg section 2031-3.

[0070] In some embodiments, the terminal holding member 30 includes a terminal receiving portion 302 for holding the connecting terminal 20, wherein the terminal receiving portion 302 has a first recess 3021 that receives the leg portion 203.

[0071] In this way, by providing a first recess 3021 in the terminal receiving portion 302 of the terminal holding member 30, and by receiving the leg 203 of the connecting terminal 20 with the first groove 201 through the first recess 3021, the terminal holding member 30 can reliably hold the connecting terminal 20, prevent the connecting terminal 20 from shifting, and further prevent the position of the first groove 201 that is crimped with the lead wire 1122 from shifting, thereby further improving the reliability of the connecting terminal 20 crimping the lead wire 1122.

[0072] In some embodiments, the leg 203 may be interference-fitted with the first recess 3021. For example, the leg 203 may be slightly larger in the width direction than the first recess 3021 in the width direction, thereby enabling the leg 203 to be more reliably received in the first recess 3021.

[0073] In some embodiments, at least one of the two support legs 2031 on both sides in the width direction is provided with an inclined portion. By providing this inclined portion, the support leg 2031 can be guided into the first recess 3021.

[0074] In the leg portion 2031 on one side of the width direction, the inclined portion is located on the end face of the front end of the leg portion 2031 on one side of the width direction. For example, as Figure 3As shown, the left support leg 2031-1 is provided with an inclined portion 2031a, which is located on the left end face of the front end of the support leg 2031-1.

[0075] In the leg portion 2031 on the other side of the width direction, the inclined portion is located on the end face of the front end of the leg portion 2031 on the other side of the width direction. For example, as Figure 3 As shown, the right-side support leg 2031-3 is provided with an inclined portion 2031b, which is located on the right end face of the front end of the support leg 2031-3.

[0076] In some embodiments, the dimension of the terminal body portion 202 in the width direction may be larger than its dimension in the axial direction. That is, the width of the terminal body portion 202 is greater than the height of the terminal body portion 202.

[0077] In this way, by making the dimension of the terminal body 202 larger in the width direction than in the axial direction, the dimension of the connecting terminal 20 in the axial direction can be further reduced.

[0078] like Figure 3 As shown, in some embodiments, the terminal body 202 includes a wrist 2021 that extends in the width direction. The wrist 2021 includes a mounting surface 20211 located on the opposite side of the axial direction. The mounting surface 20211 contacts at least a portion of the terminal receiving portion 302.

[0079] In this way, by making the mounting surface 20211 on the other side of the axial direction of the wrist 2021 contact the terminal receiving portion 302, the terminal receiving portion 302 can limit the connection terminal 20 in the axial direction. As a result, when the lead wire 1122 is crimped through the first groove 201, the position of the first groove 201 is relatively fixed, thereby further improving the reliability of crimping the lead wire 1122.

[0080] In some embodiments, the setting surface 20211 can be in various forms. For example, such as Figure 3 As shown, the setting surface 20211 can be a plane extending along the width direction; or, the setting surface 20211 can be an inclined plane that has a certain angle with the axial direction when viewed radially; or, the setting surface 20211 can be other shapes other than a plane.

[0081] In some embodiments, when viewed radially, the axial position of the setting surface 20211 is located within the axial range of the first groove 201. That is, the axial position of the setting surface 20211 is located between the top (highest position) of the first groove 201 in the axial direction and the bottom (lowest position) on the other side in the axial direction.

[0082] Therefore, by positioning the mounting surface 20211 of the wrist portion 2021 within the axial range of the first groove 201, the axial size of the connecting terminal 20 can be further reduced.

[0083] In some embodiments, the terminal receiving portion 302 has a second recess 3022, which receives the wrist portion 2021.

[0084] In this way, by providing a second recess 3022 in the terminal receiving portion 302 of the terminal holding member 30 and receiving the wrist portion 2021 of the connecting terminal 20 through the second recess 3022, the terminal holding member 30 can reliably hold the connecting terminal 20, prevent the connecting terminal 20 from shifting, and further prevent the position of the first groove 201 that is crimped with the lead wire 1122 from shifting, thereby further improving the reliability of the connecting terminal 20 crimping the lead wire 1122.

[0085] In some embodiments, when the setting surface 20211 is in contact with the terminal receiving portion 302, there is a gap between the front end of the leg 203 and the bottom of the first recess 3021. For example, the axial dimension of the leg 203 is smaller than the axial dimension of the first recess 3021.

[0086] Therefore, when the setting surface 20211 is in contact with the terminal receiving portion 302, by preventing the front end of the leg portion 203 from contacting the first recess 3021, it is possible to avoid crimping failure and further improve the reliability of crimping the lead wire 1122.

[0087] In some embodiments, the axial dimension of the leg 203 may be set to be equal to the axial dimension of the first recess 3021, such that when the mounting surface 20211 is in contact with the terminal receiving portion 302, the front end of the leg 203 is in contact with the bottom of the first recess 3021. However, the dimensions of the leg 203 and the first recess 3021 are not limited in this invention.

[0088] Figure 7 This is a perspective view of one embodiment of the terminal holding member and insulating member of the present invention. In some embodiments, such as Figure 7 As shown, the stator 11 also includes an insulating member 113 disposed between the stator core 111 and the coil portion 112. Viewed radially, at least a portion of the insulating member 113 is located in the same axial position as at least a portion of the terminal holding member 30.

[0089] Therefore, by positioning at least a portion of the insulating member 113 and at least a portion of the terminal retaining member 30 in the same axial position, the axial size of the electric pump 1 can be further reduced, which helps to miniaturize the electric pump 1 in the axial direction.

[0090] In some embodiments, at least a portion of the insulating member 113 and at least a portion of the terminal retaining member 30 may be located in the same axial position in various ways. For example, as Figure 7 As shown, the end face of the insulating member 113 on one axial side includes a first inclined surface 1131, and the end face of the terminal holding member 30 on the other axial side includes a second inclined surface 304. The first inclined surface 1131 and the second inclined surface 304 are opposite each other in the axial direction. For example, the insulating member 113 is provided with a recess for accommodating at least a portion of the terminal holding member 30.

[0091] According to the above embodiment, by providing a plurality of first grooves 201 for crimping lead wires 1122 in the connection terminal 20, the number of lead wires 1122 that need to be crimped in each first groove 201 can be reduced, thereby improving the reliability of crimping the lead wires 1122 and reducing the axial size of the connection terminal 20, which helps to miniaturize the electric pump 1 in the axial direction.

[0092] The present invention has been described above with reference to specific embodiments. However, those skilled in the art should understand that these descriptions are exemplary and not intended to limit the scope of protection of the present invention. Those skilled in the art can make various modifications and variations to the present invention based on its spirit and principles, and these modifications and variations are also within the scope of the present invention.

Claims

1. An electric pump, characterized in that, The electric pump includes: The motor unit includes an axially extending shaft, a rotor rotatable at a radially outer position than the shaft, and a stator radially opposite to the rotor. A circuit board is disposed on one axial side of the motor section; A connecting terminal, which is axially disposed between the stator and the circuit board; and A terminal holding component that holds the connection terminal. The stator includes: Annular stator core; and The coil section includes multiple coil body sections mounted on the stator core and lead wires. The connection terminal electrically connects the coil section to the circuit board. The connecting terminal has a plurality of first slots for crimping the lead wires of the coil portion. The plurality of the first slots are arranged along the width direction of the connecting terminal, which intersects the axial direction.

2. The electric pump according to claim 1, characterized in that, The terminal holding component is provided with a plurality of second slots for the lead wires to pass through. The plurality of the second grooves are arranged along the width direction.

3. The electric pump according to claim 2, characterized in that, The first slot includes: The extended groove extends axially; and An inclined groove portion, which is connected to the extended groove portion, is located on the other side of the axial direction of the extended groove portion and extends toward the other side of the axial direction. The second slot includes: The bottom of the second groove is located on the other side of the axial direction of the second groove. The lead wire includes a first lead wire and a second lead wire, wherein at least a portion of the first lead wire and at least a portion of the second lead wire respectively contact the bottom of the corresponding second groove and respectively contact the extension groove portion of the corresponding first groove. When viewed radially, at least a portion of the first lead wire and at least a portion of the second lead wire are located at the same position in the axial direction.

4. The electric pump according to claim 1, characterized in that, The connection terminal includes a terminal body and a leg extending from the terminal body toward the other side in an axial direction. The leg is provided with multiple of the first grooves. The terminal holding component includes a terminal receiving portion that holds the connecting terminal. The terminal receiving portion has a first recess that receives the leg.

5. The electric pump according to claim 4, characterized in that, The terminal body includes a wrist portion that extends along the width direction. The wrist includes a mounting surface located on the opposite side of the axial direction. The mounting surface is in contact with at least a portion of the terminal receiving portion.

6. The electric pump according to claim 5, characterized in that, Viewed radially, the position of the setting surface in the axial direction is within the axial range of the first groove.

7. The electric pump according to claim 5, characterized in that, When the mounting surface is in contact with the terminal receiving portion, there is a gap between the front end of the leg and the bottom of the first recess.

8. The electric pump according to claim 5, characterized in that, The terminal receiving portion has a second recess that receives the wrist.

9. The electric pump according to claim 4, characterized in that, The dimension of the terminal body in the width direction is larger than its dimension in the axial direction.

10. The electric pump according to claim 1, characterized in that, The stator also includes an insulating component disposed between the stator core and the coil section. Viewed radially, at least a portion of the insulating component and at least a portion of the terminal retaining component are located in the same position in the axial direction.

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