Brushless motor

Abstract

To provide a brushless motor capable of effectively and easily responding to requests for different interfaces depending on customers.SOLUTION: A brushless motor housing a stator and a rotor in a housing, comprises: three bus bars which are positioned on one end side in a shaft direction of the stator, and connect a three-phase coil provided to the stator in each same phase; three output terminals 7 that are extended to a shaft direction in a state of being electrically connected to one end side of each bus bar; a holder part 12 that is supported by the housing as well as being arranged in one end side of each bus bar in the housing; and a recombination component 10 that includes a terminal 11 exposed to an external part of the housing as well as being electrically connected to each output terminal 7. There is a plurality of types of the recombination component 10 that has a common holder part 12, and a different configuration of the terminal 11. One of the plurality of types is supported by the housing.SELECTED DRAWING: Figure 2

Description

Technical Field

[0004] , , , ,

[0005] , , , ,

[0001] The present disclosure relates to a brushless motor that houses a stator and a rotor in a housing.

Background Art

[0002] Conventionally, a motor is provided with a terminal (conductive terminal) connected to a power supply device that supplies power to the motor from the outside. The specifications of the interface of the terminal may vary depending on the customer, and it is changed to various configurations according to the required interface specifications. Therefore, it is required that the motor can easily change the terminal configuration according to the customer's specifications, and various methods have been proposed so far. For example, Patent Document 1 discloses a brushed motor that can be adapted to the required specifications by making the shape of a connector provided separately from the brush holder such that it is pushed in and fitted from the outside of the brush holder.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] By the way, when the connector is configured as an attachable attachment separate from the brush holder as in Patent Document 1 described above, the number of parts that are handled separately from the motor body increases. In other words, in a brushed motor such as Patent Document 1 described above, in order to enable the change of the connector (terminal configuration) according to the customer's specifications, the number of parts increases by one, so there is room for improvement from the viewpoints of cost and handling. Note that the requirement to easily change the terminal configuration according to the specifications as described above is similarly required for brushless motors.

[0005] This invention was devised in light of these challenges, and one of its objectives is to provide a brushless motor that can efficiently and easily respond to different interface needs among customers. Furthermore, this invention is not limited to this objective; another objective is to achieve effects and benefits that cannot be obtained by conventional technology, resulting from the various configurations shown in the embodiments for carrying out the invention described later. [Means for solving the problem]

[0006] (1) The first brushless motor disclosed herein is a brushless motor comprising a stator and a rotor housed in a housing, comprising: three busbars located at one end of the stator in the axial direction and connecting three phase coils provided on the stator according to their respective phases; three output terminals extending in the axial direction from the one end of each of the busbars in an electrically connected manner; and a holder portion supported by the housing, which is a bottomed cylindrical shape opening toward the one end, and is composed of a bottom portion superimposed on the one end of the busbars within the housing and a side portion erected from the bottom portion and fitted into the housing. , Each of the aforementioned output terminals is electrically connected to a terminal that is exposed to the outside of the housing. , a connector portion on the terminal where the end exposed to the outside is located, an insulating cover portion that covers the holder portion from one end and is formed integrally with a part of the connector portion It comprises a reconfigurable component having the following: The connector portion is located adjacent to the housing on the outside, and the three output terminals are arranged at the circumferential position where the connector portion is located, and are spaced apart in the circumferential direction. Multiple types of the interchangeable parts are provided, all of which share a common holder portion but have different terminal configurations, and one of these multiple types is supported by the housing. (2) In the case of (1) above, it is preferable that the brushless motor further comprises an end bell which is mounted on one end side of the holder portion and fixed to the housing. (3) The second brushless motor disclosed herein is a brushless motor comprising a stator and a rotor housed in a housing, comprising: three busbars located at one end of the stator in the axial direction and connecting three-phase coils provided on the stator to each other in the same phase; three output terminals extending in the axial direction while being electrically connected at one end of each of the busbars; a replaceable part having a holder portion disposed at one end of the busbars within the housing and supported by the housing, a terminal electrically connected to each of the output terminals and exposed to the outside of the housing, a connector portion on which the exposed end of the terminal is located, an insulating cover portion having a shape that covers the holder portion from the one end and is formed integrally with a part of the connector portion; and an end bell attached to the one end of the insulating cover portion and fixed to the housing. The connector portion is disposed adjacent to the housing on the outside. Multiple types of replaceable parts are available, all having the holder portion in common and different terminal configurations, and one of the multiple types is supported by the housing. (4) The third brushless motor disclosed herein is a brushless motor having a stator and a rotor housed in a housing, comprising: three busbars located at one end of the stator in the axial direction and connecting three-phase coils provided on the stator to each other in the same phase; three output terminals extending in the axial direction while being electrically connected at one end of each of the busbars; and a reconfigurable part having a holder portion disposed at one end of the busbars within the housing and supported by the housing, a terminal electrically connected to each of the output terminals and exposed to the outside of the housing, a connector portion on which the end of the terminal exposed to the outside is disposed, and an insulating cover portion having a shape that covers the holder portion from the one end. The connector portion is disposed adjacent to the housing on the outside, the holder portion is integrally formed with a holder-side connector portion that constitutes a part of the connector portion, and the insulating cover portion is integrally formed with a cover-side connector portion that combines with the holder-side connector portion to constitute the connector portion. Multiple types of the interchangeable parts are provided, all of which share a common holder portion but have different terminal configurations, and one of these multiple types is supported by the housing. (5) In the case of (4) above, it is preferable that the brushless motor further comprises an end bell which is attached to one end of the insulating cover and fixed to the housing.

[0007] ( 6 Preferably, each output terminal extends from each busbar toward one end. Furthermore, it is preferable that the holder portion is superimposed on the one end of the three busbars and has holes that penetrate in the axial direction through which each output terminal is inserted.

[0008] (7 )before It is preferable that the three output terminals are located at a circumferential position where the connector portion is located, and are spaced apart in the circumferential direction.

[0009] (8) Preferably, the connector portion has a different configuration depending on the type of the recombined part. 。 [Effects of the Invention]

[0010] According to the disclosed brushless motor, it is possible to efficiently and easily accommodate different interface requirements from customers. [Brief explanation of the drawing]

[0011] [Figure 1] This is a perspective view of a brushless motor according to an embodiment. [Figure 2] Figure 1 is a perspective view showing some of the components of a brushed motor in a disassembled state. [Figure 3] Figure 1 is a plan view of the molded busbars of the brushless motor. [Figure 4] Figure 1 is a perspective view of an example of the interchangeable components included in a brushless motor. [Figure 5] Figure 4 is an exploded perspective view of the reconfigured parts. [Figure 6] Figure 4 is a plan view showing the terminal holder of the reconfigured part holding the terminal. [Figure 7] Figure 1 shows another example of interchangeable parts included in the brushless motor, and is an exploded perspective view of the interchangeable parts excluding the terminals. [Figure 8] Figure 7 shows a view in which the terminal holder of the interchangeable part is superimposed on a molded busbar, and the terminal holder is holding the terminal. [Modes for carrying out the invention]

[0012] Referring to the drawings, a brushless motor as an embodiment will be described. The following embodiments are merely examples, and there is no intention to exclude various modifications and applications of technologies not explicitly shown in the following embodiments. Each configuration of this embodiment can be implemented with various modifications without departing from their gist. Also, it can be selectively adopted as necessary, or appropriately combined.

[0013] [1. Overall Configuration] FIG. 1 is a perspective view of a brushless motor 1 (hereinafter referred to as "motor 1") according to this embodiment. As shown in FIG. 1, the motor 1 houses a rotor 2 with a shaft 20 fixed thereto and a stator 3 fixed to a housing 4 that forms the outer shell of the motor 1. In this embodiment, an inner rotor type brushless DC motor in which the rotor 2 is arranged at the center of the cylindrical stator 3 is exemplified. The rotor 2, the stator 3, and the housing 4 are coaxially arranged with respect to the central axis C of the motor 1.

[0014] The housing 4 is a metal bottomed cylindrical shape with one end side in the axial direction open, and as shown in FIG. 2, a molded bus bar 5, a recombination part 10, and an end bell 6 are fixed to the opening on one end side of the housing 4 in this order from the other end side toward the one end side. Note that although the outer shape of the housing 4 of this embodiment is cylindrical, the shape of the housing 4 is not limited to this.

[0015] The rotor 2 includes a rotor core (not shown) that rotates integrally with the shaft 20 and a cylindrical magnet (not shown) fixed to the outer peripheral surface of the rotor core. The shaft 20 is a rotating shaft that supports the rotor 2, and one end of the shaft 20 penetrates each of the molded bus bar 5, Recombination the recombination part 10, and the end bell 6, and is arranged so as to protrude to one end side of the housing 4. Thereby, the shaft 20 also functions as an output shaft for extracting the output (mechanical energy) of the motor 1 to the outside. The shaft 20 of this embodiment is rotatably supported by the bottom of the housing 4 and the end bell 6 via two bearings sandwiching the rotor core in the axial direction.

[0016] The stator 3 is a substantially cylindrical component with a space on its inner diameter side where the rotor 2 is positioned. It comprises an annular stator core (not shown) fixed within the housing 4, and coils (not shown) wound around the stator core via an insulator (not shown). In the motor 1 of this embodiment, six coils are provided. Two coils are supplied with U-phase current, two other coils with V-phase current, and the remaining two coils with W-phase current.

[0017] As shown in Figure 3, the molded busbar 5 is composed of three busbars 51 that connect coils of the same phase. The three busbars 51 are arc-shaped flat plate members that extend in directions perpendicular to the axial direction, and are arranged in a state that is offset in the axial direction (forming layers) so that they do not conduct electricity with each other. The molded busbar 5 is provided as an insert molded product in which these three busbars 51 are molded with resin. In other words, in this embodiment, the three busbars 51 are a single molded product made of resin. Do It can also be said that it is provided as a bus bar 5. The molded bus bar 5 has a donut shape (ring) when viewed from the axial direction, and has a circular hole 5d in the center that is concentric with the central axis C of the motor 1.

[0018] Each busbar 51 has three output terminals 7 connected to one end for power supply. The three output terminals 7 are terminals that connect to the terminal 11 of the reconfigurable component 10, which will be described later, and extend axially while being electrically connected to each busbar 51. terminals Preferably, terminals 7 are arranged clustered together and spaced apart from each other at the circumferential position where the connector portion 13, described later, of the reconfigurable part 10 is located. In this embodiment, the three output terminals 7 are provided at equal intervals and spaced apart from each other in the circumferential direction around the circumferential position where the connector portion 13 is located.

[0019] Furthermore, in this embodiment, each output terminal 7 extends axially from each of the three busbars 51 toward one end, and as shown in Figure 2, each output terminal 7 extends beyond the end face of one end of the molded busbar 5. Note that the output terminals 7 and the busbars 51 may be a single unit, or they may be separate units electrically connected. Also, the three busbars 51 do not have to be integrated as a molded busbar 5.

[0020] The interchangeable part 10 is a component that provides electrical conductivity between a power supply device (not shown) that supplies power to the motor 1 from an external source and the output terminal 7, and as shown in Figure 2, it has a terminal 11 that is connected to the power supply device. Recombination Component 10 is available in multiple types with different configurations of terminal 11 to suit customer specifications, and one of these types is applied to motor 1. The power supply device may also have a function to input an operating signal to motor 1. The configuration of the reconfigurable component 10 will be described later.

[0021] The end bell 6 is a metal component attached to one end of the reassembly part 10 and fixed to the housing 4. The end bell 6 in this embodiment has a flat portion 6a that rests on the surface of one end of the reassembly part 10 (the surface of one end of the lid portion 18 of the cover 15, which will be described later), and a bulge portion 6b formed from the flat portion 6a in a bottomed cylindrical shape with a central axis C. This bulge portion 6b is a part that houses a bearing (not shown). The shape of the end bell 6 is not particularly limited.

[0022] [2.Main part configuration] In this embodiment, the motor 1 allows for easy modification of the terminal configuration 11 to match customer specifications. Specifically, the configuration of the terminal 11 (shape, arrangement, size, etc.) is formed according to customer specifications, and multiple types of interchangeable parts 10 equipped with terminals 11 of different configurations are provided. One of these interchangeable parts 10 is then supported (mounted) on the housing 4. This allows for the commonality of major components (basic structure) such as the rotor 2, stator 3, housing 4, molded busbar 5, and shaft 20, while accommodating customer interface requirements, making it appear as if a motor 1 specifically designed for the customer has been manufactured.

[0023] In this embodiment, two types of reconfigurable parts 10 with different configurations of terminal 11 are illustrated. An example of a reconfigurable part 10 (hereinafter referred to as "first reconfigurable part 10A") is shown in Figures 4 to 6, and another example of a reconfigurable part 10 (hereinafter referred to as "second reconfigurable part 10B") is shown in Figures 7 and 8. Although two types of reconfigurable parts 10 are illustrated here, three or more types of reconfigurable parts 10 may be provided.

[0024] In the following description, when describing the parts of the recombination part 10, if the first recombination part 10A and the second recombination part 10B are to be distinguished, the letter "A" will be added to the end of the part number of the first recombination part 10A, and the letter "B" will be added to the end of the part number of the second recombination part 10B. If the first recombination part 10A and the second recombination part 10B are not to be distinguished, the capital letter at the end will be omitted.

[0025] The interchangeable part 10 is provided with at least a terminal 11 and a holder portion 12. The terminal 11 is formed according to the customer's specifications as described above. In contrast, the holder portion 12 is a common (uniform) part regardless of the customer's specifications. The holder portion 12 is located on one end of the busbar 51 within the housing 4 and is supported by the housing 4. In other words, the interchangeable part 10 can be rearranged (attached according to specifications) to the basic structure described above because of the common part, the holder portion 12.

[0026] As shown in Figures 4 and 7, the reconfigurable part 10 of this embodiment is provided with a holder portion 12 having an outer shape that can be fitted into the housing 4, and a connector portion 13 having a shape that can engage with a connector (not shown) of a power supply device. The holder portion 12 is supported by the housing 4 by being superimposed on one axial end of the molded busbar 5. The connector portion 13 is, for example, bottomed cylindrical in shape and is positioned radially outside the holder portion 12 and adjacent to the housing 4 outside the housing 4.

[0027] The terminals 11 are, for example, conductive plate-shaped members, and there are three of them, the same number as the output terminals 7. Each terminal 11 is electrically connected to each output terminal 7 and is exposed to the outside of the housing 4. Specifically, one end 11a (see Figure 6 or Figure 8) of each terminal 11 is placed in the holder portion 12 and electrically connected to the output terminal 7. The other end 11b (see Figure 4 or Figure 8) of each terminal 11 is placed inside the connector portion 13 and is exposed to the outside of the housing 4. As a result, when the connector of the power supply device is inserted into the connector portion 13, the terminals 11 are electrically connected to the power supply device, making electrical contact between the power supply device and the output terminals 7.

[0028] The connector section 13 is the part where the other end 11b of the terminal 11 (i.e., the end exposed to the outside) is located, and corresponds to the configuration of the terminal 11. In other words, the configuration of the connector section 13 also differs depending on the type of interchangeable part 10.

[0029] As shown in Figure 5 or Figures 7 and 8, the reconfigurable part 10 of this embodiment is formed by combining three parts: a terminal 11, a terminal holder 14 that holds the terminal 11, and a cover 15 that is positioned on one axial end of the terminal holder 14. The holder portion 12 is provided on the terminal holder 14. The connector portion 13 is formed by combining the holder-side connector portion 16 of the terminal holder 14 and the cover-side connector portion 17 of the cover 15.

[0030] The terminal holder 14 is an insulating (for example, made of resin) component having a structure for holding the terminal 11, and comprises the holder portion 12 described above and a holder-side connector portion 16 integrally formed on the radially outer side of the holder portion 12.

[0031] As shown in Figures 5 and 7, the holder portion 12 of this embodiment is a bottomed cylindrical shape, and a circular hole 12d concentric with the central axis C of the motor 1 is provided through the center of its bottom. In other words, the holder portion 12 is composed of a donut-shaped bottom when viewed from the axial direction and side portions erected on the outer circumference of the bottom. As shown in Figures 6 and 8, an output terminal hole 12h is provided through the bottom at the other end of the holder portion 12, through which the output terminal 7 is inserted. h These are provided in accordance with the positions of the output terminals 7 described above. Here, we illustrate three output terminal holes 12h that are clustered together at the position of the holder-side connector portion 16 that constitutes the connector portion 13 (near the holder-side connector portion 16) and are provided at equal intervals and spaced apart from each other in the circumferential direction, but the shape and number of output terminal holes 12h are not limited to this. For example, the output terminal hole 12h may be a single elongated hole provided along the circumferential direction through which all three output terminals 7 can be inserted.

[0032] The side surface of the holder portion 12 is cut out where the holder-side connector portion 16 is connected, and the terminal 11 is positioned to straddle this cutout and held by the terminal holder 14. For example, as shown in Figures 5 and 6, the first reconfigured part 10A is provided with a linear guide portion 12g that protrudes from the bottom of the holder portion 12A toward one end when viewed from the axial direction. The terminal 11 is positioned to abut the output terminal 7 along this guide portion 12g and is held by the terminal holder 14A.

[0033] As described above, the holder-side connector portion 16 constitutes a part of the connector portion 13, and its shape differs depending on the type of recombination part 10. For example, in the first recombination part 10A, the holder-side connector portion 16A constitutes the bottom side of the bottomed cylindrical connector portion 13A. As shown in Figures 5 and 6, the holder-side connector portion 16A has a box shape with a bottom wall extending radially outward from the bottom of the other end of the holder portion 12A, and side walls erected on the outer edge of the bottom wall. A positioning wall 16w that defines the position of the other end 11b of the terminal 11 is provided on the holder-side connector portion 16A protruding from its bottom wall toward one end. Note that, as shown in Figure 6, the guide portion 12g of the holder portion 12A may extend from the bottom wall of the holder-side connector portion 16A. In the second recombination part 10B, the holder-side connector portion 16B constitutes the cylindrical side of the bottomed cylindrical connector portion 13B. As shown in Figures 7 and 8, the holder-side connector portion 16B has a larger axial dimension than the side portion of the holder portion 12B, and its outer shape is formed as a roughly rectangular tube extending to the other end in the axial direction.

[0034] The cover 15 is a component that covers the terminal holder 14 from one axial end so that the terminal 11 does not come into contact with other components (e.g., the end bell 6), and has a lid portion 18 (insulating lid portion) and a cover-side connector portion 17 provided radially outside the lid portion 18. The cover 15 is a component made of an insulating material (e.g., resin), and has a lid portion 18 and cover The side connector portion 17 is formed integrally.

[0035] The cover portion 18 is a part that covers the holder portion 12 of the terminal holder 14 from one end in the axial direction, and is formed in a shape corresponding to the outer shape of the holder portion 12 (in this embodiment, a donut shape when viewed from the axial direction). In other words, the cover portion 18 in this embodiment is formed in a donut shape that is disc-shaped when viewed from the axial direction and has a circular hole 18d in the center that is concentric with the central axis C of the motor 1, and is placed on the end face of one end of the side surface of the holder portion 12.

[0036] The cover-side connector portion 17 is combined with the holder-side connector portion 16 to form the connector portion 13. The shape of the cover-side connector portion 17 differs depending on the type of interchangeable part 10, and is formed in a shape that corresponds to the shape of the holder-side connector portion 16 (a shape that is assembled to the holder-side connector portion 16). In this embodiment, in the first interchangeable part 10A, since the holder-side connector portion 16A forms the bottom side of the connector portion 13, the cover-side connector portion 17A is formed to form the cylindrical side of the connector portion 13, as shown in Figure 5. Also, in the second interchangeable part 10B, since the holder-side connector portion 16B forms the cylindrical side of the connector portion 13, the cover-side connector portion 17B is formed to form the bottom side of the connector portion 13, as shown in Figure 7.

[0037] In this embodiment, the other ends 11b of the three terminals 11 of the first recombination part 10A are arranged such that, as shown in Figure 5, the other end 11b of one terminal 11 is located radially outward from the other two terminals 11; in other words, they form a triangle when viewed from the axial direction. Corresponding to this, the cover-side connector of the first recombination part 10A Department 17A has three holes surrounding the other end 11b of each terminal 11, and the three holes are arranged to form a triangle.

[0038] [3. Action, Effects] (1) According to the motor 1 described above, the interchangeable parts 10 have a common holder portion 12, and multiple types are available with different configurations of terminals 11, and one of the interchangeable parts 10 is supported by the housing 4. In this way, the basic structure of the rotor 2, stator 3 and housing 4 remains the same, but multiple types of interchangeable parts 10 from the output terminal 7 onwards are available and configured to be interchangeable, so that different interface requirements can be efficiently and easily met by different customers. In other words, even if different customers have different interface requirements, the specifications of the required interface can be efficiently and easily met by replacing only the minimum necessary parts, i.e., the interchangeable parts 10.

[0039] Furthermore, the interchangeable part 10 is not provided as an attachment that is retrofitted to the housing 4, but rather the holder portion 12 is supported by the housing 4 within the housing 4, thereby assembling it to the motor 1. As a result, it is possible to eliminate parts (attachments) that are handled separately from the motor body, thus improving the handling efficiency of the motor 1. Moreover, since the holder portion 12 of the interchangeable part 10 extends into the interior of the housing 4, there is no dead space, and the motor 1 can be made smaller. In addition, because the interchangeable part 10 is incorporated into the motor 1, the appearance of the motor 1 does not have attachments separate from the motor body, that is, it has an appearance unique to that specification, which can increase the market value of the motor 1.

[0040] (2) In the motor 1 described above, the three output terminals 7 extend from each bus bar 51 toward one end in the axial direction. By integrating the output terminals 7 with the bus bar 51 as a joint component in this way, the structure can be simplified and the number of parts can be reduced. In particular, in the motor 1 described above, the three bus bars 51 are also integrated as a single molded bus bar 5, further simplifying the structure and reducing the number of parts can be achieved. In addition, the holder portion 12 of the multiple types of interchangeable parts 10 all have an output terminal hole 12h through which the output terminals 7 are inserted, and are superimposed on the molded bus bar 5. By standardizing the holder portion 12 in this way, interchangeable parts 10 that can be replaced with a simple configuration can be realized.

[0041] (3) The three output terminals 7 are located at a circumferential position where the connector portion 13 of the reconfigurable part 10 is located, and are spaced apart in the circumferential direction. By arranging the three output terminals 7 so that they are clustered around the connector portion 13 and spaced apart from each other in the circumferential direction, the length of the terminals 11 can be shortened without the terminals 11 coming into contact with each other. In particular, in the motor 1 described above, since the three output terminals 7 are provided at equal intervals in the circumferential direction, the configuration of the terminals 11 can be simplified and wiring can be easily done.

[0042] (4) The connector portion 13 of the interchangeable part 10 has a different shape depending on the type of interchangeable part 10. In this way, by making it possible to change not only the configuration of the terminal 11 but also the configuration of the connector portion 13, it is possible to respond efficiently and easily to different interface (connector) demands from customers.

[0043] (5) The interchangeable part 10 has an insulating cover portion 18 that covers the holder portion 12 from one axial end. As a result, by simply placing the interchangeable part 10, the terminal 11 can be insulated from other parts by the cover portion 18, thereby improving the assembly efficiency of the motor 1 and the interchangeability of the interchangeable part 10. Furthermore, since the cover portion 18 is integrally formed with the cover-side connector portion 17, which is part of the connector portion 13, insulation between the terminal 11 and other parts can be achieved without increasing the number of parts when providing the cover portion 18.

[0044] [4. Others] The configuration of the motor 1 described in the above embodiment is merely an example and is not limited to that described above. For example, the cover portion 18 of the interchangeable part 10 may be omitted. The shape of the holder portion 12 and the cover portion 18 of the interchangeable part 10 when viewed from the axial direction is not limited to a donut shape, but may be, for example, an arc shape. Also, the interchangeable part 10 does not have to be composed of three parts: terminal 11, terminal holder 14, and cover 15. The interchangeable part 10 may be configured as a single part in which the terminal 11 is insert-molded to have a shape corresponding to the terminal holder 14 and cover 15.

[0045] The configuration of the terminals 11 and connector portion 13 of the multiple types of interchangeable parts 10 is not limited to those described above. For example, in the first interchangeable part 10A described above, an example was given in which the other ends 11b of the three terminals 11 are arranged to form a triangle, but interchangeable parts in which the other ends of the three terminals are arranged radially, or interchangeable parts in which the other ends of the three terminals are arranged circumferentially, may also be provided. The connector portion may have a shape having three holes arranged radially when the other ends of the three terminals are arranged radially, and may have a shape having three holes arranged circumferentially when the other ends of the three terminals are arranged circumferentially.

[0046] The three output terminals 7 may be provided separately from the molded busbar 5, which includes the busbar 51. The three output terminals 7 do not have to be located at the circumferential position where the connector portion 13 of the interchangeable part 10 is located, and their spacing from each other may differ. The holder portion 12 of multiple types of interchangeable parts 10 may be common to correspond to the positions of the three output terminals 7.

[0047] The motor 1 may be equipped with a Hall sensor for detecting the rotational position of the rotor 2. In this case, the reconfigurable part 10 may be provided with a signal line connected to the Hall sensor. The type of motor is not particularly limited, and it may be an outer rotor type brushless DC motor in which the rotor is positioned radially outward of the stator. [Explanation of symbols]

[0048] 1. Motor (brushless motor) 2 rotors 3 stata 4 Housing 5 Molded Bath Bars 7 Output terminals 10 interchangeable parts 10A First Recombination Part (Recombination Part) 10B Second Recombination Part (Recombination Part) Terminal 11 11b Other end (the end that is exposed to the outside) 12, 12A, 12B Holder section 12h Output terminal hole (hole) 13 Connector section 14, 14A, 14B Terminal Holder 15, 15A, 15B Cover 18. Cover (insulating cover) 51 Bus Bar

Claims

1. In a brushless motor in which a stator and rotor are housed within a housing, Three busbars are located at one end of the stator in the axial direction, and connect the three-phase coils provided on the stator to each other according to their phase. Three output terminals are electrically connected and extend in the axial direction at one end of each of the busbars, The reconfigurable part comprises: a holder portion that is supported by the housing and has a bottom, cylindrical shape with a bottom that is open toward the one end of the busbar and is composed of a bottom portion that is superimposed on the one end of the busbar within the housing and a side portion that is erected from the bottom portion and fitted into the housing; a terminal that is electrically connected to each of the output terminals and is exposed to the outside of the housing; a connector portion on which the end of the terminal that is exposed to the outside is arranged; and an insulating cover portion that is shaped to cover the holder portion from the one end and is formed integrally with a part of the connector portion. The connector portion is located adjacent to the housing on the outside, The three output terminals are located at the circumferential position where the connector is situated, and are spaced apart in the circumferential direction. Multiple types of the interchangeable parts are provided, all having a common holder portion but different terminal configurations, and one of these multiple types is supported by the housing. A brushless motor characterized by the following features.

2. The housing further comprises an end bell that is attached to one end of the holder portion and fixed to the housing. A brushless motor according to claim 1, characterized in that...

3. In a brushless motor in which a stator and rotor are housed within a housing, Three busbars are located at one end of the stator in the axial direction, and connect the three-phase coils provided on the stator to each other according to their phase. Three output terminals are electrically connected and extend in the axial direction at one end of each of the busbars, A reconfigurable component having: a holder portion positioned within the housing on one end side of the busbar and supported by the housing; a terminal electrically connected to each of the output terminals and exposed to the outside of the housing; a connector portion on which the externally exposed end of the terminal is positioned; and an insulating cover portion that covers the holder portion from the one end side and is formed integrally with a part of the connector portion. The insulation cover is fitted to one end and fixed to the housing, and comprises an end bell, The connector portion is located adjacent to the housing on the outside, Multiple types of the interchangeable parts are provided, all having a common holder portion but different terminal configurations, and one of these multiple types is supported by the housing. A brushless motor characterized by the following features.

4. In a brushless motor in which a stator and rotor are housed within a housing, Three busbars are located at one end of the stator in the axial direction, and connect the three-phase coils provided on the stator to each other according to their phase. Three output terminals are electrically connected and extend in the axial direction at one end of each of the busbars, The reconfigurable component comprises: a holder portion positioned within the housing on one end of the busbar and supported by the housing; a terminal electrically connected to each of the output terminals and exposed to the outside of the housing; a connector portion on which the externally exposed end of the terminal is positioned; and an insulating cover portion having a shape that covers the holder portion from the one end side. The connector portion is located adjacent to the housing on the outside, The holder portion is integrally formed with the holder-side connector portion which constitutes a part of the connector portion. The insulating cover portion is integrally formed with the cover-side connector portion, which, when combined with the holder-side connector portion, constitutes the connector portion. Multiple types of the interchangeable parts are provided, all having a common holder portion but different terminal configurations, and one of these multiple types is supported by the housing. A brushless motor characterized by the following features.

5. The housing further comprises an end bell that is attached to one end of the insulating cover and fixed to the housing. A brushless motor according to claim 4, characterized in that...

6. The three output terminals are located at the circumferential position where the connector is situated, and are spaced apart in the circumferential direction. A brushless motor according to any one of claims 3 to 5, characterized in that

7. The connector portion has a different configuration depending on the type of interchangeable part. A brushless motor according to any one of claims 1 to 6, characterized in that

8. Each of the output terminals extends from each of the busbars toward one end, The holder portion is superimposed on one end of the three busbars and has holes that penetrate it in the axial direction through which each of the output terminals is inserted. A brushless motor according to any one of claims 1 to 7, characterized in that

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