Wire connection structure and stator structure

Abstract

To provide a wire connection structure capable of increasing versatility to cope with various stator bodies, and a stator structure.SOLUTION: A wire connection structure 1 according to the present disclosure includes a circular bus bar holder 10 and a plurality of bus bar terminals 20 arranged on a first surface 10a that is one surface of the bus bar holder 10. In each bus bar terminal 20, there are formed a wiring connection part 20a capable of directly connecting a wiring 111 connected to a corresponding coil 110, and a lead wire terminal connection part 20b capable of connecting a corresponding lead wire 31. Only one bus bar terminal 20 is arranged on any line extending radially outward from an axis passing the center of the bus bar holder 10.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present disclosure relates to a wiring structure and a stator structure. [Background technology]

[0002] A busbar unit has been known that includes annular or C-shaped busbars that correspond to multiple concentrically formed annular body support grooves. The busbars have terminal portions that are joined to corresponding coil wire ends, and the terminal portions are provided to protrude from the annular or C-shaped body (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2011-205876 Summary of the Invention [Problem to be solved by the invention]

[0004] In conventional busbar units, in order to install multiple terminals corresponding to the multiple coil wire ends depending on the corresponding motor, ring-shaped or C-shaped busbars with terminals were specially designed and prepared and arranged concentrically. In other words, busbar units were manufactured individually according to the number of slots, number of circuits, and wiring pattern of the motor, and even if the motor's external shape was the same, a dedicated busbar unit was manufactured. As such, because busbar units were manufactured individually for each motor, there was a problem in that the busbar units could not be made more versatile.

[0005] In order to solve the above problems, the present disclosure aims to provide a wiring structure and a stator structure that can be made more versatile so that they can be used with various stator bodies. [Means for solving the problem]

[0006] The wiring structure according to the present disclosure comprises a busbar holder that is circular or a portion of a circular ring, and a plurality of busbar terminals that are arranged on a first surface, which is one surface of the busbar holder. Each busbar terminal is formed with a wiring connection portion to which wiring connected to a corresponding coil can be directly connected, and a lead wire terminal connection portion to which a corresponding lead wire can be connected. When an axis passing through the center of the busbar holder that is circular or a portion of a circular ring is taken as the central axis, only one busbar terminal is arranged on any line extending radially outward from the central axis.

[0007] The stator structure according to the present disclosure comprises the wiring structure according to the present disclosure and a stator body, the stator body having a circular yoke portion, a plurality of teeth protruding radially inward from the yoke portion, a plurality of coils arranged corresponding to each tooth portion, and a plurality of wires electrically connected to each coil, and the corresponding wires are electrically connected to the busbar terminals. [Effects of the Invention]

[0008] The wiring structure and stator structure according to the present disclosure can be made more versatile so that they can be adapted to various stator bodies. [Brief explanation of the drawings]

[0009] [Figure 1] 1 is a perspective view showing an outline of a stator structure according to a first embodiment. [Figure 2] FIG. 2 is a top view showing the stator structure in FIG. [Figure 3] FIG. 2 is a side view showing the stator structure in FIG. [Figure 4] FIG. 2 is a perspective view showing an outline of a bus bar holder in FIG. [Figure 5] FIG. 2 is a perspective view showing the bus bar terminal in FIG. [Figure 6] 2 is a partially cutaway perspective view showing a method of arranging the bus bar terminals in FIG. 1. FIG. [Figure 7] FIG. 2 is a perspective view showing the lead wire attachment mechanism according to FIG. [Figure 8] FIG. 2 is a perspective view showing an outline of a stator body in FIG. [Figure 9] FIG. 10 is a partially cutaway perspective view showing a holder main body according to a second embodiment. [Figure 10] FIG. 10 is a perspective view showing a base according to a second embodiment. [Figure 11] FIG. 11 is a perspective view showing an outline of a bus bar holder according to a third embodiment. [Figure 12] FIG. 10 is a perspective view showing an outline of a cover in a fourth embodiment. [Figure 13] FIG. 11 is a perspective view showing an outline of a bus bar holder according to a fourth embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0010] Hereinafter, embodiments of the present disclosure will be described with reference to the drawings. Embodiment 1 Fig. 1 is a perspective view showing an outline of a stator structure 200 according to embodiment 1. Fig. 2 is a top view showing the stator structure 200 in Fig. 1. Fig. 3 is a side view showing the stator structure 200 in Fig. 1.

[0011] The stator structure 200 is annular in shape. A straight line passing through the center of the annular shape of the stator structure 200 is defined as a stator axis LS.

[0012] A rotor (not shown) that can rotate around the stator axis LS is inserted into a cylindrical space formed in the center of the stator structure 200. The stator structure 200 and the rotor form a motor. A rotating body that can rotate around the stator axis LS may also be inserted into the cylindrical space of the stator structure 200. In this case, the stator structure 200 is used as part of a resolver that can detect the rotational speed of the rotating body. The stator structure 200 of the present disclosure may also be used in devices other than motors and resolvers.

[0013] The stator structure 200 includes an annular stator body 210 and an annular wiring structure 1 disposed on an end surface thereof. The central axis of the annular stator body 210 is a stator axis LS, which is the central axis of the stator structure 200. When viewed along the stator axis LS, the direction along the radius of the annular stator body 210 is defined as the radial direction, and the direction along the outer periphery of the stator body 210 is defined as the circumferential direction.

[0014] When the wiring structure 1 is arranged on the end face of the annular stator body 210, the central axis of the stator body 210, i.e., the stator axis LS of the stator structure 200, and the central axis of the wiring structure 1 are on the same straight line.

[0015] The wiring structure 1 has a busbar holder 10 and six busbar terminals 20 arranged on a first surface 10a, which is one surface of the busbar holder 10. Lead wires 31 are connected to three of the six busbar terminals 20 by a lead wire attachment mechanism 30. Note that two of the three lead wires 31 are not shown in Figures 1 to 3.

[0016] A plurality of wires 111 extending from the stator body 210 are arranged to crawl on the first surface 10a of the bus bar holder 10. Each wire 111 is connected to a corresponding bus bar terminal 20. The bus bar terminals 20, the lead wire attachment mechanism 30, and the wires 111 will be described later.

[0017] 4 is a perspective view showing an outline of the bus bar holder 10 in FIG. The bus bar holder 10 is annular. An axis passing through the center of the annular bus bar holder 10 is defined as a central axis L. The bus bar holder 10 is made of a non-conductive material.

[0018] The busbar holder 10 is a component that determines the general shape of the wiring structure 1. Therefore, the central axis of the annular wiring structure 1 is equal to the central axis L of the busbar holder 10. When viewed along the central axis L, the direction along the radius of the annular busbar holder 10 is defined as the radial direction, and the direction along the outer periphery of the busbar holder 10 is defined as the circumferential direction.

[0019] Six pedestal portions 12 are formed on the first surface 10a of the busbar holder 10. The pedestal portions 12 are distributed in the circumferential direction of the busbar holder 10. That is, only one pedestal portion 12 is formed on any straight line extending from the central axis L toward the radially outward direction.

[0020] In the first embodiment, six pedestal portions 12 are formed, and each pedestal portion 12 is formed at 60-degree intervals around the central axis L. However, this is not limited to this. The pedestal portions 12 do not need to be evenly distributed around the central axis L. For example, any of the pedestal portions 12 may be densely arranged depending on the routing positions of the three lead wires 31. Furthermore, the number of pedestal portions 12 may be selected appropriately taking into consideration the routing of the wiring 111.

[0021] The base portion 12 is formed with a holding groove 12a.

[0022] An annular wall portion 14 extending along the central axis L is formed on the inner peripheral edge portion of the bus bar holder 10. A plurality of wiring grooves 17 are formed on the outer peripheral edge portion of the bus bar holder 10.

[0023] 5 is a perspective view showing the busbar terminal 20 in FIG. 1. The busbar terminal 20 is made of a conductive material. In the first embodiment, the busbar terminal 20 has a plate-like shape. However, the shape of the busbar terminal 20 can be selected appropriately depending on the wiring to be connected to the busbar terminal 20.

[0024] The bus bar terminal 20 has a wiring connection portion 20a and a lead wire terminal connection portion 20b. A wiring 111 is directly wound around the wiring connection portion 20a. This mechanically and electrically connects the wiring 111 and the bus bar terminal 20. Furthermore, the wiring 111 wound around the wiring connection portion 20a may be soldered or welded to more firmly secure the wiring connection portion 20a and the wiring 111.

[0025] In the first embodiment, the wiring connection portion 20a is a protruding portion to make it easier to wind the wiring 111. However, the shape of the wiring connection portion 20a can be selected as appropriate. Also, in the first embodiment, the wiring 111 is wound around the wiring connection portion 20a to connect the two. However, the method for connecting the wiring 111 and the wiring connection portion 20a may be selected as appropriate from known connection methods. Examples of known connection methods include connection by soldering, welding, or screw fastening.

[0026] The lead wire terminal connection portion 20b is a screw hole into which a screw 30a of the lead wire attachment mechanism 30 is screwed for attachment. The lead wire attachment mechanism 30 will be described later.

[0027] The busbar terminals 20 are arranged on the base portion 12. Fig. 6 is a partially cutaway perspective view showing a method of arranging the busbar terminals 20 in Fig. 1. The busbar terminals 20 are held and arranged by being inserted into holding grooves 12a formed in the base portion 12.

[0028] The bus bar terminals 20 inserted into the holding grooves 12 a are held by the base portion 12 due to friction generated between the bus bar terminals 20 and the base portion 12 .

[0029] In the first embodiment, the busbar terminals 20 are held by friction generated between the busbar terminals 20 and the base portion 12, but any known method can be used to hold the busbar terminals 20. For example, the busbar terminals 20 and the base portion 12 may be engaged with each other to hold and position the busbar terminals 20 on the base portion 12. Alternatively, for example, the busbar terminals 20 and the base portion 12 may be bonded to each other.

[0030] One busbar terminal 20 is arranged on one pedestal portion 12. That is, with regard to the busbar terminal 20, only one busbar terminal 20 is arranged on any line extending from the central axis L toward the outside in the radial direction.

[0031] Fig. 7 is a perspective view showing the lead wire attachment mechanism 30 according to Fig. 1. The lead wire attachment mechanism 30 has a terminal 30b and a screw 30a for attaching the terminal 30b to the lead wire terminal connecting portion 20b.

[0032] A well-known wiring terminal member can be used for the terminal 30b. In the present embodiment 1, a wiring terminal member having a round hole is used as the terminal 30b. An element wire at the end portion of the lead wire 31 is connected and fixed to the terminal 30b.

[0033] When connecting the lead wire 31 to the terminal 30b, the lead wire 31 is prepared with the coating removed from the end to expose the wire. In this state, the wire of the lead wire 31 and a portion of the terminal 30b are crimped together, thereby connecting and fixing the lead wire 31 to the terminal 30b.

[0034] A screw 30a is inserted into the round hole of the terminal 30b, and the screw 30a is further screwed into a threaded hole in the lead wire terminal connection portion 20b. This connects the terminal 30b and the bus bar terminal 20 to each other. Note that any well-known wiring connection mechanism can be appropriately selected and used for the lead wire terminal connection portion 20b and the lead wire attachment mechanism 30. For example, the element wire of the lead wire 31 may be directly connected to the lead wire terminal connection portion 20b by soldering or welding.

[0035] Fig. 8 is a perspective view showing an outline of the stator body 210 in Fig. 1. The stator body 210 has an annular yoke portion 211, 18 teeth 212 protruding radially inward from the yoke portion 211, 18 coils 110 arranged corresponding to the teeth 212, and wires 111 electrically connected to the coils 110. Note that Fig. 8 depicts only one wire 111, and the other wires 111 are not depicted.

[0036] The stator body 210 has a pair of end faces perpendicular to the stator axis LS. Eighteen wires 111 extending from each coil 110 extend from one of the pair of end faces of the stator body 210. That is, the wires 111 extend in the same direction along the central axis L.

[0037] 1 to 3. The wiring structure 1 is disposed on the stator body 210 so as to cover one of a pair of end faces of the stator body 210 from which the wiring 111 extends. Each of the wirings 111 extending from the stator body 210 is electrically connected to the wiring structure 1.

[0038] More specifically, each wire 111 is inserted into and fitted into a corresponding wire groove 17 of the bus bar holder 10. Each wire 111 extends to the first surface 10a of the bus bar holder 10 while being fitted into the corresponding wire groove 17. Note that at least one wire groove 17 is formed in the bus bar holder 10 for each coil 110.

[0039] Each of the wires 111 extending to the first surface 10a of the bus bar holder 10 is routed and wired on the first surface 10a of the bus bar holder 10, and connected to the corresponding bus bar terminal 20. Each of the wires 111 is wound around the wire connection portion 20a of the corresponding bus bar terminal 20, and is electrically connected to each other.

[0040] On the first surface 10a, the wirings 111 are adjacent to, overlap with, or cross each other with corresponding wirings 111. Since each wiring 111 uses an electric wire whose wires are covered with an insulating material, corresponding wirings 111 do not short-circuit even if they are adjacent to, overlap with, or cross each other.

[0041] When all the wires 111 are connected to the bus bar terminals 20 through the wire grooves 17, the wiring structure 1 is arranged to cover the end face of the stator body 210 without using any fastening means.

[0042] Note that well-known fastening means may be used to more firmly position the wiring structure 1 on the end surface of the stator body 210. Well-known fastening means include fastening with screws, fastening with snap members, and fastening with a caulking method.

[0043] The wiring structure 1 according to the first embodiment includes a busbar holder 10 having an annular shape or a portion of an annular shape, and a plurality of busbar terminals 20 arranged on a first surface 10a, which is one surface of the busbar holder 10. Each busbar terminal 20 has a wiring connection portion 20a to which a wiring 111 connected to a corresponding coil 110 can be directly connected, and a lead wire terminal connection portion 20b to which a corresponding lead wire 31 can be connected. When an axis L passing through the center of the busbar holder 10 having an annular shape or a portion of an annular shape is defined as a central axis L, only one busbar terminal 20 is arranged on any line extending radially outward from the central axis L. This allows the busbar terminals 20 to be appropriately arranged depending on the number of slots, the number of circuits, and the wiring pattern of the stator body 210. Furthermore, the wiring 111 and the lead wires 31 are directly connected to appropriately arranged busbar terminals 20, thereby improving the flexibility in selecting the wiring paths of the wiring 111 and the lead wires 31. Therefore, one wiring structure 1 can be used for various stator bodies 210. This increases the versatility of the wiring structure 1 so that it can be used for various stator bodies 210. This also makes it possible to select either a configuration in which the lead wire 31 is connected to one busbar terminal 20 or a configuration in which the lead wire 31 is not connected. This allows the busbar terminals 20 to be standardized. This reduces the cost of the busbar terminals 20, and the manufacturing cost of the wiring structure 1 can be reduced. This also eliminates the need to use long metal plates for the busbar terminals 20. This reduces the material cost of the busbar terminals 20. This reduces the manufacturing cost of the wiring structure 1.

[0044] In the wiring structure 1 according to the first embodiment, the busbar holder 10 has a plurality of pedestal portions 12 formed on the first surface 10a, and the busbar terminals 20 are disposed on the pedestal portions 12. This allows the busbar terminals 20 to be disposed at a position higher than the first surface 10a by the height of the pedestal portions 12. This facilitates the task of connecting the wiring 111 or the lead wires 31 to the busbar terminals 20. This allows for more efficient manufacturing of the stator structure 200 using the wiring structure 1.

[0045] In the wiring structure 1 according to the first embodiment, a plurality of wiring grooves 17 into which the wirings 111 can be fitted are formed on the outer peripheral edge of the bus bar holder 10. This allows each wiring 111 to be more firmly connected and fixed to the bus bar holder 10. This prevents misalignment and separation between each wiring 111 and the bus bar holder 10 due to vibration or the like. This makes it possible to provide a stator structure 200 with a more stable structure.

[0046] In the wiring structure 1 according to the first embodiment, two wiring grooves 17 are formed for each corresponding coil 110. This makes it possible to accommodate either a stator body 210 having a configuration in which one or two wires 111 extend from the coil 110. This increases the versatility of the wiring structure 1 so that it can be adapted to various stator bodies 210.

[0047] In the wiring structure 1 according to the first embodiment, an annular wall portion 14 extending along the central axis L is formed on the inner peripheral edge of the busbar holder 10. This prevents the wiring 111 running along the first surface 10a of the busbar holder 10 from being positioned closer to the center than the inner peripheral edge of the busbar holder 10. This prevents interference with a rotor or rotating body inserted in the center of the stator structure 200. This prevents interference with the rotor or rotating body, making it possible to provide a stator structure 200 that operates more stably.

[0048] A stator structure 200 according to a first embodiment includes a wiring structure 1 of the present disclosure and a stator body 210. The stator body 210 includes an annular yoke portion 211, a plurality of teeth 212 protruding radially inward from the yoke portion 211, a plurality of coils 110 arranged corresponding to the teeth 212, and a plurality of wires 111 electrically connected to the coils 110. The corresponding wires 111 are electrically connected to the busbar terminals 20. This allows the wiring structure 1 to be used, allowing the busbar terminals 20 to be appropriately arranged depending on the number of slots, the number of circuits, and the wiring pattern of the stator body 210. Furthermore, the wires 111 and the lead wires 31 are directly connected to the appropriately arranged busbar terminals 20, thereby improving the flexibility in selecting the wiring paths of the wires 111 and the lead wires 31. Therefore, a single wiring structure 1 can be used for various stator bodies 210. Therefore, it is possible to obtain a stator structure 200 using the wiring structure 1, which has increased versatility so that it can be used with various stator bodies 210. This also makes it possible to select either a configuration in which the lead wire 31 is connected to one busbar terminal 20 or a configuration in which the lead wire 31 is not connected. This allows the busbar terminals 20 to be standardized. This reduces the cost of the busbar terminals 20, reduces the manufacturing cost of the wiring structure 1, and ultimately reduces the manufacturing cost of the stator structure 200.

[0049] In the stator structure 200 according to the first embodiment, the wires 111 are arranged so as to run along the first surface 10a of the bus bar holder 10, and corresponding wires 111 cross each other. This provides greater flexibility in selecting the wiring paths of the multiple wires 111. Therefore, it is possible to obtain a stator structure 200 using the wiring structure 1 that is more versatile so as to be compatible with various stator bodies 210.

[0050] The stator structure 200 according to the first embodiment includes, among the plurality of busbar terminals 20, busbar terminals 20 to which lead wires 31 are not connected and busbar terminals 20 to which lead wires 31 are connected. This allows selection of whether or not to connect the lead wires 31 to each busbar terminal 20. Therefore, it is possible to appropriately select which busbar terminal 20 to connect the lead wires 31 to, based on the routing of the lead wires 31, etc. This allows for a stator structure 200 using the wiring structure 1 with enhanced versatility so as to be compatible with various stator bodies 210. This also allows for the busbar terminals 20 to which the lead wires 31 are connected and the busbar terminals 20 to which the lead wires 31 are not connected to be used as the same busbar terminal 20. This allows for standardization of the busbar terminals 20, thereby reducing the cost of the busbar terminals 20. This reduces the manufacturing cost of the stator structure 200.

[0051] In the wiring structure 1 according to the first embodiment, six busbar terminals 20 are arranged, and three of the six busbar terminals 20 are connected to lead wires 31. However, this is not limited to this. The number of busbar terminals 20 and the number of busbar terminals 20 to which the lead wires 31 are connected can be selected appropriately based on the connection method of each coil 110 of the corresponding stator body 210.

[0052] Furthermore, in the bus bar holder 10 in the first embodiment, one wiring groove 17 is formed for each coil 110. However, this is not limited to this. For example, two wiring grooves 17 may be formed in the bus bar holder 10 for each coil 110. Furthermore, two or more wiring grooves 17 may be formed in the bus bar holder 10 for each coil 110. This allows one bus bar holder 10 to accommodate various arrangements of coils 110 or arrangements of wires 111 extending from the coils 110.

[0053] Furthermore, the wiring structure 1 in the first embodiment is disposed on the end face of the stator body 210 so that the central axis of the wiring structure 1 coincides with the central axis of the stator body 210. However, this is not limited to this. For example, the wiring structure 1 can be disposed with the central axis L of the wiring structure 1 offset from the stator axis LS of the stator body 210 within a range that does not interfere with a rotor or rotating body inserted into the cylindrical space formed in the center of the stator structure 200. This further enhances the versatility of the wiring structure 1, allowing it to be used with stator bodies 210 of various sizes.

[0054] Embodiment 2 The second embodiment differs from the wiring structure 1 of the first embodiment in that the positions of the base portions 12 of the wiring structure 1 are changeable.

[0055] Fig. 9 is a partially cutaway perspective view showing a holder main body 11 in embodiment 2. The holder main body 11 and each pedestal 13 are made of a non-conductive material. Fig. 10 is a perspective view showing a pedestal 13 in embodiment 2. The pedestal 13 has a holding groove 12a and a fixing structure 13a formed at the bottom.

[0056] The bus bar holder 10 has an annular holder body 11 and a plurality of pedestals 13 arranged on one surface of the holder body 11 .

[0057] A plurality of receiving portions 11a are formed along the circumferential direction of the holder body 11. That is, only one receiving portion 11a is formed on any line extending radially outward from the central axis L. The receiving portions 11a are a pair of rectangular through holes.

[0058] The bus bar terminals 20 are inserted into the holding grooves 12a. This allows the bus bar terminals 20 to be held by the base 13. The bus bar terminals 20 inserted into the holding grooves 12a are held by the base 13 by friction generated between the bus bar terminals 20 and the base 13. One base 13 holds one bus bar terminal 20.

[0059] The fixing structure 13a is a pair of protruding plate-like portions. A step is formed at the tip of the fixing structure 13a. The step is configured to include a step surface 13b facing in the opposite direction to the protruding direction of the fixing structure 13a.

[0060] Base portion 12 of busbar holder 10 is formed by placing base 13 on one surface of holder body 11. When placing base 13 on busbar holder 10, fixing structure portion 13a is inserted into receiving portion 11a.

[0061] When the fixing structure 13a is inserted into the receiving portion 11a, a step formed at the tip of the fixing structure 13a passes through the receiving portion 11a and reaches the other surface opposite to the one surface of the holder body 11. As a result, the step surface 13b of the step catches on the other surface of the holder body 11, and the base 13 and the holder body 11 are connected and fixed.

[0062] In this way, base 13 and holder body 11 are fixed to each other, and base portion 12 is formed on first surface 10a of bus bar holder 10.

[0063] In the second embodiment as well, only one receiving portion 11a is formed on any line extending radially outward from the central axis L, and therefore only one bus bar terminal 20 is arranged on any line extending radially outward from the central axis L. The other configurations are the same as those of the wiring structure 1 in the first embodiment, and therefore description thereof will be omitted.

[0064] In the wiring structure 1 according to the second embodiment, the busbar holder 10 includes a holder body 11 having a circular ring shape or a portion of a circular ring shape, and a plurality of pedestals 13 arranged on one surface of the holder body 11. The pedestals 13 are arranged on one surface of the holder body 11, thereby forming pedestal portions 12 in the busbar holder 10. Each of the pedestals 13 can be arranged at any position on the holder body 11. This allows the positions of the busbar terminals 20 arranged on the pedestal portions 12 to be appropriately changed depending on the number of slots, the number of circuits, and the wiring pattern of the stator body 210. That is, for various stator bodies 210, the positions of the busbar terminals 20 can be appropriately changed depending on the positions of the wiring 111 extending from the coil 110 and the lead wires 31 extending from the outside and connected thereto. This further enhances the versatility of the wiring structure 1 so that it can be used with various stator bodies 210.

[0065] In the wiring structure 1 according to the second embodiment, each pedestal 13 is formed with a fixing structure 13a, and the holder body 11 is formed with a plurality of receiving portions 11a. Each pedestal 13 is disposed on the holder body 11 by connecting the fixing structure 13a to any of the receiving portions 11a. This makes it easier to change the position of the pedestal 13, and for example, it is possible to easily change the position of the busbar terminals 20 during the prototype stage of the stator structure 200 or at the installation site of the stator structure 200. This further enhances the versatility of the wiring structure 1 so that it can be used with various stator bodies 210.

[0066] In the second embodiment, the base 13 and the holder body 11 are fixed to each other by using the step surface 13b of the fixing structure 13a inserted into the hole. However, this is not a limitation. For example, well-known fixing methods such as screw fastening and adhesive bonding can be used.

[0067] Embodiment 3 The third embodiment differs from the wiring structure 1 of the first embodiment in that a pressing portion 15 is formed on a first surface 10a of a bus bar holder 10. Fig. 11 is a perspective view showing an outline of a bus bar holder 10 of the third embodiment.

[0068] A plurality of pressing portions 15 are formed on the first surface 10a of the bus bar holder 10. Each pressing portion 15 is a protrusion-like or wall-like portion extending from the first surface 10a of the bus bar holder 10 along the central axis L.

[0069] The wiring 111 running along the first surface 10a of the busbar holder 10 is arranged so as to pass around the pressing portion 15. For example, the wiring 111 can be run between the annular wall portion 14 and the pressing portion 15. The other configurations are the same as those of the wiring structure 1 in the first embodiment, and therefore description thereof will be omitted.

[0070] In the wiring structure 1 according to the third embodiment, the bus bar holder 10 is formed with a protrusion- or wall-shaped retaining portion 15 extending from the first surface 10a along the central axis L. This allows the wires 111 to be routed along the retaining portion 15, thereby preventing movement of the wires 111 routed on the first surface 10a. This prevents movement of the wires 111 due to vibrations and the like, and prevents poor connection at the connection portions of the wires 111 caused by vibrations. This makes it possible to provide a stator structure 200 that can operate more stably.

[0071] Embodiment 4 The fourth embodiment differs from the wiring structure 1 of the first embodiment in that the wiring structure 1 further includes a cover 40. Fig. 12 is a perspective view showing an outline of the cover 40 of the fourth embodiment.

[0072] The wiring structure 1 further includes an annular cover 40. The cover 40 is arranged to cover the first surface 10a of the busbar holder 10. The cover 40 covers the plurality of busbar terminals 20 arranged on the busbar holder 10 and the plurality of wires 111 arranged on the first surface 10a of the busbar holder 10.

[0073] Wall-like portions are formed protruding along the inner and outer circumferential edges on one surface of the cover 40, which faces the first surface 10a. When the cover 40 is placed on the bus bar holder 10, the cover 40 has an annular box shape, and the cover 40 defines a space on the surface of the bus bar holder 10.

[0074] Six weak portions 40a are formed in the cover 40. The weak portions 40a are mechanically weaker than the other portions of the cover 40. The weak portions 40a can be easily removed from the cover 40.

[0075] For example, the plate thickness of the member at the fragile portion 40a may be thinner than that of the other portions of the cover 40. Also, for example, the fragile portion 40a may be an area surrounded by cuts formed on the surface. Also, the fragile portion 40a may be an area surrounded by a broken-line penetrating portion.

[0076] By removing the fragile portions 40a, through holes 41 are formed in the cover 40. The lead wires 31 can be passed through the formed through holes 41. The number of fragile portions 40a is not limited to six and can be set as appropriate.

[0077] Four mounting portions 42 are formed on the cover 40. The mounting portions 42 are plate-shaped portions that protrude from one surface of the cover 40 along the central axis L. A step is formed at the tip of each mounting portion 42. The step is configured to include a cover step surface 42a that faces in the opposite direction to the protruding direction of the mounting portions 42.

[0078] The mounting portion 42 is connected to a cover mounting portion 18 formed on the bus bar holder 10, and the bus bar holder 10 and the cover 40 are fixed to each other. The cover mounting portion 18 will be described later.

[0079] A plurality of protrusions 43 are formed on the wall along the outer periphery of the cover 40. The outer periphery wall of the cover 40 on which the plurality of protrusions 43 are formed has an uneven shape.

[0080] 13 is a perspective view showing an outline of a bus bar holder 10 according to the fourth embodiment. Four cover attachment portions 18 are formed on the bus bar holder 10. Each cover attachment portion 18 is a hole that passes through the bus bar holder 10. A corresponding attachment portion 42 is inserted into each cover attachment portion 18.

[0081] When the mounting portion 42 corresponding to the cover mounting portion 18 is inserted, the cover step surface 42a formed at the tip of the mounting portion 42 catches on the edge of the cover mounting portion 18 on the surface opposite to the first surface 10a of the bus bar holder 10. This connects the cover mounting portion 18 to the mounting portion 42, and the bus bar holder 10 and the cover 40 are fixed to each other.

[0082] An uneven portion (not shown) is formed on the outer periphery of the end face of the stator body 210 on which the wiring structure 1 is disposed. When the wiring structure 1 with the cover 40 is disposed on the end face of the stator body 210, the uneven portion (not shown) formed on the stator body 210 and the uneven shape of the outer periphery wall of the cover 40 fit together. The rest of the configuration is the same as the configuration of the wiring structure 1 in the first embodiment, so a description thereof will be omitted.

[0083] The wiring structure 1 according to the fourth embodiment further includes a cover 40 disposed opposite the first surface 10a of the busbar holder 10. The cover 40 has one or more through holes 41 through which the lead wires 31 can pass. This prevents movement of the wires 111 disposed on the first surface 10a of the busbar holder 10 and the lead wires 31 connected to the busbar terminals 20. This prevents movement of the wires 111 and the lead wires 31 due to vibrations and other factors, thereby preventing poor connections at the connections of the wires 111 and the lead wires 31 due to vibrations. This allows for a stator structure 200 that can operate more stably. This also prevents adhesion of dust and other contaminants to the wires 111 and the busbar terminals 20. This allows the wires 111 and the busbar terminals 20 to be kept clean. This allows for a stator structure 200 that can operate more stably.

[0084] In the wiring structure 1 according to the fourth embodiment, the cover 40 is formed with a plurality of weak portions 40a, and each weak portion 40a is a structural portion that is weaker than the structure of the cover 40 other than the weak portion 40a. Furthermore, the through holes 41 can be formed by removing the weak portions 40a. This allows the through holes 41, into which the lead wires 31 are introduced, to be formed in suitable positions based on the routing of the lead wires 31 and the arrangement positions of the bus bar terminals 20 relative to the stator body 210. Therefore, the versatility of the wiring structure 1 having the cover 40 can be improved so that it can be used with various stator bodies 210.

[0085] In the fourth embodiment, the cover 40 and the bus bar holder 10 are fixed together by using the cover step surface 42a of the mounting portion 42 inserted into the hole. However, this is not a limitation. For example, well-known fixing methods such as screw fastening and adhesive bonding can be used.

[0086] Furthermore, the cover 40 in the fourth embodiment is formed with a plurality of protrusions 43. However, this is not limitative. For example, the protrusions 43 may be omitted.

[0087] Moreover, the busbar holder 10 in the first to fourth embodiments is annular. However, this is not limited to this. For example, the busbar holder 10 may have a shape in which a portion of the annular shape is cut out. Note that in the second embodiment, when the busbar holder 10 has a shape in which a portion of the annular shape is cut out, the holder main body 11 also has a shape in which a portion of the annular shape is cut out.

[0088] The configuration of each coil 110 in the first to fourth embodiments is not specified. For example, the coil 110 may be formed of a wire wound around the tooth portion 212. In this case, the wiring 111 may be connected to the end of the wire, or the end of the wire may serve as the wiring 111. The coil 110 may also be formed of a block-shaped member. In this case, the wiring 111 may be electrically connected to the block-shaped member.

[0089] Each of the configurations of the wiring structure 1 in the first to fourth embodiments can be added to the wiring structure 1 of the other embodiments as appropriate. [Explanation of symbols]

[0090] 1 wiring structure, 10 busbar holder, 10a first surface, 11 holder body, 11a receiving portion, 12 base portion, 12a holding groove, 13 base, 13a fixing structure portion, 13b stepped surface, 14 annular wall portion, 15 holding portion, 17 wiring groove, 18 cover mounting portion, 20 busbar terminal, 20a wiring connection portion, 20b lead wire terminal connection portion, 30 lead wire mounting mechanism, 30a screw, 30b terminal, 31 lead wire, 40 cover, 40a fragile portion, 41 through hole, 42 mounting portion, 42a cover stepped surface, 43 protrusion, 110 coil, 111 wiring, 200 stator structure, 210 stator body, 211 yoke portion, 212 teeth portion, L central axis, LS stator axis.

Claims

1. A busbar holder (10) that is annular or part of an annular shape; a plurality of busbar terminals (20) arranged on a first surface (10a) which is one surface of the busbar holder (10); Equipped with Each bus bar terminal (20) is formed with a wiring connection portion (20a) to which a wiring (111) connected to a corresponding coil (110) can be directly connected, and a lead wire terminal connection portion (20b) to which a corresponding lead wire (31) can be connected, When an axis passing through the center of the bus bar holder (10) that is an annular shape or a part of an annular shape is defined as a central axis (L), Only one bus bar terminal (20) is arranged on any line extending radially outward from the central axis (L). Wiring structure (1).

2. The bus bar holder (10) has a plurality of pedestal portions (12) formed on the first surface (10a), The bus bar terminal (20) is disposed on the base portion (12). A wiring structure (1) according to claim 1.

3. The bus bar holder (10) includes a holder body (11) that is annular or a part of an annular shape; A plurality of pedestals (13) arranged on one surface of the holder body (11); It has The pedestals (13) are arranged on one surface of the holder body (11), thereby forming the pedestal portions (12) in the bus bar holder (10); Each of the pedestals (13) can be disposed at any position on the holder body (11). A wiring structure (1) according to claim 2.

4. Each of the bases (13) is formed with a fixing structure (13a), The holder body (11) is formed with a plurality of receiving portions (11a), Each of the bases (13) is disposed on the holder body (11) by connecting the fixing structure (13a) to any of the receiving portions (11a). A wiring structure (1) according to claim 3.

5. A plurality of wiring grooves (17) into which the wiring (111) can be fitted are formed on the outer peripheral edge of the bus bar holder (10). A wiring structure (1) according to claim 1.

6. Two wiring grooves (17) are formed for the corresponding coils (110). A wiring structure (1) according to claim 5.

7. An annular wall portion (14) extending along the central axis (L) is formed on the inner peripheral edge portion of the bus bar holder (10). A wiring structure (1) according to claim 1.

8. The bus bar holder (10) is formed with a protrusion-shaped or wall-shaped pressing portion (15) extending from the first surface (10a) along the central axis (L). A wiring structure (1) according to claim 1.

9. The bus bar holder further includes a cover (40) disposed opposite the first surface (10a) of the bus bar holder (10), The cover (40) is formed with one or more through holes (41) through which the lead wires (31) can pass. A wiring structure (1) according to claim 1.

10. The cover (40) has a plurality of weak portions (40a) formed therein, Each of the weak portions (40a) is a portion having a structure weaker than the structure of the cover (40) other than the weak portion (40a), The through hole (41) can be formed by removing the fragile portion (40a). A wiring structure (1) according to claim 9.

11. A wiring structure (1) according to claim 1; a stator body (210); Equipped with The stator body (210) has an annular yoke portion (211), a plurality of teeth (212) protruding radially inward from the yoke portion (211), a plurality of coils (110) respectively arranged corresponding to the teeth (212), and a plurality of wires (111) electrically connected to the coils (110), The bus bar terminals (20) are electrically connected to the corresponding wirings (111). A stator structure (200).

12. Each of the wirings (111) is arranged to run on the first surface (10a) of the bus bar holder (10), The corresponding wirings (111) cross each other. The stator structure (200) of claim 11.

13. Among the plurality of bus bar terminals (20), there are bus bar terminals (20) to which the lead wires (31) are not connected, and there are bus bar terminals (20) to which the lead wires (31) are connected. The stator structure (200) of claim 11.

Images