terminal block

Abstract

The purpose of this invention is to improve the conductivity of the terminals while ensuring misalignment absorption performance and to suppress deformation of the terminals within the socket body. The terminal holder includes: a terminal comprising a plurality of stacked terminal plates; and a socket body to hold the terminal in a fixed position to a device. The terminal is formed in an elongated shape and includes: a central joint portion formed by adjacent terminal plates joining each other at the midpoint of the terminal's long side; a connecting portion formed by adjacent terminal plates joining each other at a position away from the central joint portion in the long side direction of the terminal; and a non-joining portion formed by adjacent terminal plates stacked between the central joint portion and the connecting portion in a non-joining state. At least a portion of the central joint portion is located within the socket body, the connecting portion is located outside the socket body, and at least a portion of the non-joining portion is located outside the socket body.

Description

Technical Field

[0001] This disclosure relates to terminal blocks. Background Technology

[0002] Patent document 1 discloses the following configuration: having a stacked busbar formed in the shape of an elongated strip and a base body fixed to the equipment to maintain the stacked busbar in a state, the stacked busbar including a plurality of stacked busbars, and in a portion of the stacked holding area in the long side direction of the stacked busbar, the plurality of busbars are held in a stacked state in a state in which they cannot move relative to each other. Existing technical documents Patent documents

[0003] Patent Document 1: Japanese Patent Application Publication No. 2023-169095 Summary of the Invention The problem that the invention aims to solve

[0004] The goal is to ensure the absorption performance of misalignment while improving the conductivity of the terminals and suppressing the deformation of the terminals within the socket body.

[0005] Therefore, the purpose of this disclosure is to improve the conductivity of the terminals while ensuring the misalignment absorption performance and to suppress the deformation of the terminals within the socket body. Solution for solving the problem

[0006] The terminal block disclosed herein comprises: a terminal including a plurality of stacked terminal plates; and a block body for holding the terminal in a fixed state to a device, the terminal being formed in an elongated shape, the terminal including: a central engagement portion formed by adjacent terminal plates joining each other at a midpoint along the long side of the terminal; an engagement connection portion formed by adjacent terminal plates joining each other at a position away from the central engagement portion along the long side of the terminal; and a non-engaging portion formed by adjacent terminal plates stacked between the central engagement portion and the engagement connection portion in a non-engaging state, at least a portion of the central engagement portion being located within the block body, the engagement connection portion being located outside the block body, and at least a portion of the non-engaging portion being located outside the block body. Invention Effects

[0007] According to this disclosure, the conductivity of the terminals can be improved while ensuring the misalignment absorption performance, and the deformation of the terminals within the socket body can be suppressed. Attached Figure Description

[0008] Figure 1 This is a schematic diagram showing an electromechanical unit equipped with the terminal block of Embodiment 1. Figure 2 This is an exploded perspective view showing the terminal block. Figure 3This is a front view showing the terminals. Figure 4 yes Figure 2 Sectional view along line IV-IV. Figure 5 yes Figure 4 A magnified view of a portion of the image. Figure 6 This is an explanatory diagram showing an example of a manufacturing method for a terminal block. Figure 7 This is a cross-sectional view showing the terminal block of the first modified example. Figure 8 This is a perspective view showing the terminal block of Embodiment 2. Figure 9 This is a side view showing the non-engaged intermediate path portion of the terminal block. Figure 10 This is a perspective view showing the non-jointed intermediate path portion 210 of the second modified example. Figure 11 This is a side view showing the non-jointed intermediate path portion 210 of the second modified example. Figure 12 This is a perspective view showing the non-jointed intermediate path portion of the third modified example. Figure 13 This is a perspective view showing the non-jointed intermediate path portion of the fourth modified example. Figure 14 This is a perspective view showing the non-jointed intermediate path portion of the fifth modified example. Figure 15 This is a perspective view showing the terminal block of Embodiment 3. Detailed Implementation

[0009] (Description of embodiments of this disclosure) First, embodiments of this disclosure will be described.

[0010] The terminal block disclosed herein is as follows.

[0011] (1) A terminal block comprising: a terminal including a plurality of stacked terminal plates; and a block body for holding the terminal in a fixed state to a device, the terminal being formed in an elongated shape, the terminal including: a central engagement portion formed by adjacent terminal plates being joined to each other at a midpoint along the long side of the terminal; an engagement connection portion formed by adjacent terminal plates being joined to each other at a position away from the central engagement portion along the long side of the terminal; and a non-engaged portion formed by adjacent terminal plates being stacked between the central engagement portion and the engagement connection portion in a non-engaged state, at least a portion of the central engagement portion being located within the block body, the engagement connection portion being located outside the block body, and at least a portion of the non-engaged portion being located outside the block body.

[0012] According to this terminal block, a connecting portion on the opposite side can be connected at the joint connection portion. At the joint connection portion, adjacent terminal plates are joined together, thus reducing the contact resistance between the terminal plates. Therefore, good conductivity from the joint connection portion to other connecting portions is achieved. Furthermore, because at least a portion of the intermediate joint portion is located within the block body, it is difficult for the intermediate joint portion to deform when the block body is molded with at least a portion of the intermediate joint portion as an embedded part. Therefore, deformation of the terminal within the block body can be suppressed. Additionally, because at least a portion of the non-joining portion is located outside the block body, even if the position of the opposite member connected to the joint connection portion is offset relative to the block body, the non-joining portion is easily deformed, absorbing the misalignment.

[0013] (2) In the terminal block of (1), the engaging connection portion may have a first engaging connection portion and a second engaging connection portion, the first engaging connection portion being located away from the intermediate engaging portion on one side of the long side of the terminal, and the second engaging connection portion being located away from the intermediate engaging portion on the other side of the long side of the terminal, and the non-engaging portion having a first non-engaging portion and a second non-engaging portion, the first non-engaging portion being located between the intermediate engaging portion and the first engaging connection portion, and the second non-engaging portion being located between the intermediate engaging portion and the second engaging connection portion.

[0014] In this way, by connecting the first opposing side connection portion to the first joint connection portion and the second opposing side connection portion to the second joint connection portion, the first opposing side connection portion and the second opposing side connection portion can be connected via terminals. In this case, the conductivity of both the first and second joint connection portions is good. In addition, since the first non-joint portion is located between the intermediate joint portion and the first joint connection portion, and the second non-joint portion is located between the intermediate joint portion and the second joint connection portion, misalignment between the first and second opposing side connection portions can be absorbed.

[0015] (3) In the terminal block of (1) or (2), more than 80% of the portion of the terminal block located inside the body of the block may be the intermediate joint portion.

[0016] In this case, since more than 80% of the portion of the terminal located inside the body is the intermediate joint, the terminal is more difficult to deform inside the body.

[0017] (4) In any of the terminal blocks in (1) to (3), the intermediate joint may extend from the body of the block.

[0018] In this way, if the intermediate joint extends out from the body of the base, the terminal is less likely to deform inside the body of the base.

[0019] (5) In any of the terminal blocks in (1) to (4), an annular sealing portion may also be provided, which is located between the intermediate joint portion and the main body of the block.

[0020] In this situation, liquid is difficult to pass between the terminal plates at the intermediate joint. By sealing the intermediate joint with the seat body using an annular seal, liquid flow through the outer periphery of the terminal can also be suppressed. Therefore, liquid flow along the terminal can be effectively prevented.

[0021] (6) In any of the terminal blocks in (1) to (5), the adjacent terminal blocks may be welded, pressed or brazed together in each of the intermediate joint and the joint connection.

[0022] This allows adjacent terminal blocks to be integrated, thus reducing contact resistance.

[0023] (7) In any of (1) to (6) the terminal block may also include a non-joining intermediate path portion that is bent in a manner that eliminates the path difference between the plurality of terminal blocks.

[0024] In this case, the terminal block can be easily bent around the bend, which improves the position error absorption performance.

[0025] (8) In the terminal block of (7), the non-joining intermediate path portion may include a first bending portion and a second bending portion, wherein the first bending portion and the second bending portion bend to opposite sides in the stacking direction of the terminal block.

[0026] In this case, the path length difference can be easily eliminated by using the first and second bends that bend to opposite sides.

[0027] (9) In any of the terminal blocks in (1) to (6), the terminal block may also be connected to a stacked busbar having a plurality of stacked busbars, the stacked busbar including a non-jointed intermediate path portion that is bent in a manner to eliminate the path difference between the plurality of busbars.

[0028] In this case, the position error absorption performance can be improved by using the non-joined intermediate path portion of the laminated busbar that is joined to the terminal.

[0029] (10) In the terminal block of (9), the non-joining intermediate path portion may include a first bending portion and a second bending portion, wherein the first bending portion and the second bending portion bend to opposite sides in the stacking direction of the busbar.

[0030] In this case, the path length difference can be easily eliminated by using the first and second bends that bend to opposite sides.

[0031] (Details of the embodiments disclosed herein) Specific examples of the terminal blocks of this disclosure are described below with reference to the accompanying drawings. It should be noted that this disclosure is not limited to these examples, but is intended to include all modifications within the meaning and scope equivalent to the claims, as shown by the claims.

[0032] (Implementation Method 1) The terminal block of Embodiment 1 will be described below. The terminal block is fixed to the device and is a component used to electrically connect the device to other electrical devices. A terminal is a component used for making electrical connections and is a type of wiring component. In this embodiment, the device is described as a rotating electric motor, and the other electrical device is an inverter that drives and controls the rotating electric motor. The device and other electrical devices do not necessarily have to be a rotating electric motor or an inverter; they can also be other devices, such as batteries, DC-DC converters, junction boxes, etc.

[0033] <Regarding the overall structure of the mechatronic unit with terminal blocks> An example of the overall configuration of a mechatronic unit with a terminal block is described. Figure 1 This is a schematic diagram showing the mechatronics unit 10.

[0034] The mechatronics unit 10 includes a rotary motor 20 and an inverter 12.

[0035] The rotary electric motor 20 is a rotary electric motor comprising a housing 22, an armature 24, and an excitation unit 28. Figure 1 The diagram shows an example where an armature 24, serving as a stator, is fixed within a cylindrical housing 22. An excitation unit 28 is disposed within the armature 24 as a rotor. The excitation unit 28 rotates due to the magnetic field generated by the armature 24, or the armature 24 generates an electromotive force due to the rotation of the excitation unit 28. In this embodiment, the rotary motor 20 is envisioned as a rotary motor capable of functioning as a three-phase AC motor. The rotary motor may also function as a generator, or alternatively, in addition to functioning as a motor.

[0036] The armature 24 has a stator core and a plurality of coil wires. The stator core includes a plurality of teeth arranged to surround a rotational shaft. Each coil wire is wound around one or more teeth. At least a portion of the plurality of ends of the plurality of coil wires extends from between the plurality of teeth toward one end of the armature in the axial direction.

[0037] The armature 24 includes a coil connection end 26. The coil connection end 26 is, for example, an elongated conductive plate-like portion. The coil connection end 26 is disposed on one end of the armature 24 in the axial direction. A screw through-hole for screw tightening is formed in the coil connection end 26. The coil connection end 26 can be the end of the coil wire itself, or a metal plate connected to the coil wire by welding, screw tightening, or other means. In this embodiment, three coil connection ends 26 corresponding to the third are arranged side-by-side at intervals on one end of the armature 24.

[0038] Furthermore, inverter 12 is a device with an inverter circuit. It is envisioned that inverter 12 is integrated with the rotating motor 20. For example, inverter 12 is integrated with the housing 22 of the rotating motor 20 by means of bolts or the like.

[0039] The inverter 12 includes a busbar 18 connected to the output terminal of the inverter circuit. The busbar 18 is an elongated plate-shaped member formed of a metal sheet such as copper or copper alloy. A screw through-hole 18h for screw tightening is formed in the busbar 18. In this embodiment, three busesbars 18 corresponding to three extend from the inverter 12 in a parallel manner at intervals toward the rotary motor 20.

[0040] Terminal block 30 is fixed to housing 22 of rotary motor 20 and is a component connecting rotary motor 20 and inverter 12. Terminal block 30 includes terminals 40 and a block body 32.

[0041] The main body 32 is fixed to the housing 22 by screws or the like, in a state that seals the mounting hole 22h formed in the housing 22.

[0042] Terminal 40 is held in a certain position and posture in the main body 32 with the terminal penetrating through it.

[0043] With the terminal 40 fixed to the housing 22, one end of the terminal 40 is a first engagement connection portion 42 that connects to the end of the coil connection terminal 26 inside the housing 22. With the terminal base 30 fixed to the housing 22, the first engagement connection portion 42 is positioned to coincide with the coil connection terminal 26.

[0044] A first screw insertion hole 42h is formed in the first engagement connection portion 42. When the coil connection end 26 coincides with the first engagement connection portion 42, the first engagement connection portion 42 and the coil connection end 26 are tightened and fixed by screws. As a result, the coil connection end 26 and the terminal 40 are electrically connected.

[0045] With terminal 40 fixed to housing 22, the other end of terminal 40 is a second engagement connection portion 46 supported outside housing 22 at a position where it can be connected to the end of bus 18 of inverter 12. The second engagement connection portion 46 is positioned overlapping bus 18 when inverter 12 and rotary motor 20 are integrated. In this embodiment, the three terminals 40, corresponding to the three terminals, are arranged side-by-side at intervals.

[0046] A second screw insertion hole 46h is formed in the second joint connection portion 46. When the busbar 18 and the second joint connection portion 46 are aligned, the second joint connection portion 46 and the busbar 18 are tightened and fixed by screws. Thus, the second joint connection portion 46 and the busbar 18 are electrically connected.

[0047] The armature 24 in the rotating motor 20 is electrically connected to the circuit in the inverter 12 via terminal 40.

[0048] In this embodiment, the terminal block 30 has three terminals 40. The terminal block 30 only needs to have at least one terminal 40.

[0049] It should be noted that the connection between terminal 40 and coil connection terminal 26 or busbar 18 can also be made without tightening screws. For example, terminal 40 can be electrically connected to coil connection terminal 26 or busbar 18 through an embedded structure or a spring-loaded force structure.

[0050] Terminal 40 passes through the body 32 and is held in a certain position by the body 32. It is possible that the position of the coil connection terminal 26 or the busbar 18 relative to terminal 40 may be offset within the tolerance range.

[0051] Therefore, when the terminal is composed of multiple stacked terminal plates, the terminal can be easily deformed in the thickness direction, which can absorb the misalignment of the coil connection end 26 or the bus 18 relative to the terminal.

[0052] When the terminal is simply composed of multiple stacked terminal plates, contact resistance may occur between the terminal plates. If the current flows non-distributively to the multiple terminal plates at the connection point between the terminal and the coil connection terminal 26 or the busbar 18, the resistance value of the terminal may increase. Furthermore, when the terminal is molded as an insert component into the base body, the terminal may deform due to the flow of resin used to mold the base body. If the terminal deforms, the misalignment of the coil connection terminal 26 or the busbar 18 relative to the terminal 40 may become larger.

[0053] This disclosure relates to techniques for improving the conductivity of terminal 40 while ensuring its misalignment absorption performance, and for suppressing deformation of terminal 40 within the housing body 32.

[0054] <About terminals> Figure 2 This is an exploded perspective view showing the terminal block 30. Figure 3 This is a front view showing terminal 40. Figure 4 yes Figure 2 Sectional view along line IV-IV. Figure 5 yes Figure 4 A magnified view of a portion of the image.

[0055] As described above, the terminal block 30 includes a terminal 40 and a block body 32.

[0056] Terminal 40 has multiple stacked terminal blocks. Terminal 40 can also be understood as a type of stacked busbar composed of multiple stacked busbars.

[0057] Terminal 40 is formed in an elongated shape. A first screw insertion hole 42h is formed at one end of terminal 40. With one end of coil connection end 26 overlapping with one end of terminal 40, the screw is inserted through the hole in coil connection end 26 and the first screw insertion hole 42h. Furthermore, the screw is screwed and tightened with a nut. Thus, one end of terminal 40 and coil connection end 26 are clamped between the head of the screw and the nut N, and the two are fixed in an electrically connected state.

[0058] The first screw insertion hole 42h is preferably larger than the diameter of the screw shaft. Additionally, the hole in the coil connection end 26 is also preferably larger than the diameter of the screw shaft. Because at least one of the hole in the coil connection end 26 and the first screw insertion hole 42h is larger than the diameter of the screw shaft, misalignment between one end of the terminal 40 and the coil connection end 26 within tolerance range can be absorbed in the direction along the overlapping surface of both.

[0059] A second screw insertion hole 46h is formed at the other end of terminal 40. With the other end of busbar 18 overlapping with terminal 40, screw S is inserted through the hole in busbar 18 and the second screw insertion hole 46h (refer to...). Figure 5 Furthermore, the screw S is screwed and tightened into the nut N. Thus, the other end of the terminal 40 and the busbar 18 are clamped between the head of the screw S and the nut N, and the two are fixed in an electrically connected state.

[0060] At least one of the second screw insertion hole 46h and the hole of the busbar 18 is preferably larger than the diameter of the screw shaft portion of the screw S. This allows for the absorption of misalignment between the two along the direction of the overlapping surface of the other end of the terminal 40 and the busbar 18.

[0061] In this embodiment, the terminal block 30 has three terminals 40. The terminal block 30 only needs to have at least one terminal 40.

[0062] Terminal 40 is formed by stacking elongated terminal plates 48. Terminal plate 48 is a metal plate thinner than the overall thickness of terminal 40. Terminal plate 48 is made of metal plates such as copper, copper alloy, aluminum, or aluminum alloy. Terminal plate 48 is formed into an elongated metal plate shape. In this embodiment, terminal plate 48 is formed into a rectangular shape that is longer in one direction. It is also conceivable that the ends of terminal plate 48 are rounded, or that the middle portion of terminal plate 48 is formed into a shape that bends in the width or thickness direction.

[0063] Holes for forming the aforementioned screw insertion holes 42h and 46h are formed at both ends of the terminal plate 48.

[0064] Multiple terminal plates 48 are formed in the same shape. A terminal 40 is formed by stacking multiple terminal plates 48. At both ends of the terminal 40, the holes of the multiple terminal plates 48 overlap, thereby forming a first screw insertion hole 42h or a second screw insertion hole 46h.

[0065] The thickness of terminal 40, the thickness of terminal plate 48, and the number of terminal plates 48 are arbitrary. These thicknesses and numbers can be set taking into account the allowable current value required by terminal 40, ease of deformation, and processability.

[0066] For example, the terminal 40 may be formed by stacking 3 to 6 terminal plates 48 with a thickness of 0.3 mm to 1 mm. Alternatively, for example, the terminal 40 may be formed by stacking 4 to 5 terminal plates 48 with a thickness of 0.4 mm to 0.6 mm. In this embodiment, an example of stacking 4 terminal plates 48 of the same shape will be described.

[0067] Multiple terminal blocks 48 do not necessarily have to be formed in the same shape. For example, multiple terminal blocks with different thicknesses can be stacked to form a terminal.

[0068] Terminal 40 includes a first engaging connection portion 42, a first non-engaging portion 43, an intermediate engaging portion 44, a second non-engaging portion 45, and a second engaging connection portion 46.

[0069] The intermediate joint 44 is the part where adjacent terminal plates 48 are joined to each other in the middle of the long side direction of terminal 40.

[0070] The first engagement connection portion 42 is the portion where adjacent terminal plates 48 engage with each other in the longitudinal direction of terminal 40, away from the intermediate engagement portion 44. In this embodiment, one end of terminal 40 is the first engagement connection portion 42. That is, the first engagement connection portion 42 is located in a position away from the intermediate engagement portion 44 in the longitudinal direction of terminal 40. The first screw insertion hole 42h described above is formed in this first engagement connection portion 42.

[0071] The first non-joining portion 43 is the portion of adjacent terminal plates 48 stacked between the intermediate joining portion 44 and the first joining connection portion 42 in a non-joining state.

[0072] The second connecting portion 46 is the portion where adjacent terminal plates 48 engage with each other in the long-side direction of terminal 40, away from the intermediate connecting portion 44. In this embodiment, the other end of terminal 40 is the second connecting portion 46. That is, the second connecting portion 46 is located away from the intermediate connecting portion 44 in the long-side direction of terminal 40. The intermediate connecting portion 44 is located between the first connecting portion 42 and the second connecting portion 46. The second screw insertion hole 46h is formed in the second connecting portion 46.

[0073] The second non-joining portion 45 is the portion of adjacent terminal plates 48 stacked between the intermediate joining portion 44 and the second joining connection portion 46 in a non-joining state.

[0074] It should be noted that in this embodiment, an example is described where the engaging connection portion includes a first engaging connection portion 42 and a second engaging connection portion 46, and the non-engaging portion includes a first non-engaging portion 43 and a second non-engaging portion 45. However, it is also contemplated that the terminal has a single engaging connection portion. For example, it is also contemplated that an engaging connection portion and a non-engaging portion are formed on either end side of the terminal, and the terminal plate remains in a non-engaging state on the other end side of the terminal.

[0075] Adjacent terminal plates 48 are joined to each other at the intermediate joint 44, the first joint connection 42, and the second joint connection 46. The jointing of terminal plates 48 means that the terminal plates 48 are connected to each other in a continuous manner to form an integral unit.

[0076] For example, adjacent terminal blocks 48 can be fused, crimped, or brazed together. Fusion welding is welding performed while the mating surfaces are molten; examples include laser welding. Crimping is welding performed while applying a force that induces plastic deformation to the mating surfaces; examples include diffusion bonding (e.g., thermoforming), resistance welding, and ultrasonic bonding. Brazing is a method of joining base materials using solder or filler metal with minimal melting. Fusion welding, crimping, or brazing are, for example, joining methods specified in JIS Z 3001-1:2018.

[0077] By joining adjacent terminal plates 48 together, the multiple terminal plates 48 are integrated in a state where they cannot move relative to each other. Therefore, the intermediate joining portion 44, the first joining connection portion 42, and the second joining connection portion 46 in the terminal 40 are more difficult to bend in the thickness direction than the first non-joining portion 43 and the second non-joining portion 45. By joining adjacent terminal plates 48 together, the contact resistance between the terminal plates 48 is 0 or close to 0.

[0078] Because adjacent terminal plates 48 are not joined to each other in the first non-joining portion 43 and the second non-joining portion 45, multiple terminal plates 48 can be misaligned in a staggered manner. Therefore, the first non-joining portion 43 and the second non-joining portion 45 can be deformed in the thickness direction more easily than the intermediate joining portion 44, the first joining connection portion 42 and the second joining connection portion 46.

[0079] Relative to the seat body 32, the first engaging connection portion 42, the first non-engaging portion 43, the intermediate engaging portion 44, the second non-engaging portion 45, and the second engaging connection portion 46 are configured as follows.

[0080] At least a portion of the intermediate joint 44 is located within the seat body 32. By having at least a portion of the intermediate joint 44 located within the seat body 32, deformation of the terminal 40 within the seat body 32 can be suppressed during the molding of the seat body 32.

[0081] In order to suppress the deformation of the terminal 40 within the body 32, the intermediate joint 44 is preferably long enough to suppress the deformation caused by resin pressure.

[0082] For example, in the long side direction of terminal 40, more than 80% of the portion of terminal 40 located within the base body 32 can be the intermediate joint portion 44. In this embodiment, the entire portion of terminal 40 located within the base body 32 is the intermediate joint portion 44, therefore, in the long side direction of terminal 40, more than 80% of the portion of terminal 40 located within the base body 32 is the intermediate joint portion 44.

[0083] Additionally, for example, the intermediate joint 44 preferably extends from the seat body 32. In this case, either both ends of the intermediate joint 44 may extend from the seat body 32, or only one end may extend from the seat body 32. In this embodiment, both ends of the intermediate joint 44 extend from the seat body 32. If both ends of the intermediate joint 44 extend from the seat body 32, the entire portion of the terminal 40 located within the seat body 32 reliably constitutes the intermediate joint 44.

[0084] The first connecting portion 42 and the second connecting portion 46 are located outside the main body 32. Therefore, it is easy to connect the coil connection end 26 or the bus 18 to the first connecting portion 42 and the second connecting portion 46.

[0085] Furthermore, if the first connecting portion 42 and the second connecting portion 46 are located outside the main body 32, it is easy to connect the coil connection terminal 26 or the busbar 18 to the first connecting portion 42 and the second connecting portion 46. Also, if the coil connection terminal 26 or the busbar 18 is connected to the first connecting portion 42 and the second connecting portion 46, current can easily flow to the entire plurality of terminal plates 48 near the connection point in the terminal 40.

[0086] For example, suppose that the busbar 18 is connected overlappingly at the second joint connection 46 (see reference). Figure 5 The current supplied from busbar 18 flows primarily to terminal 40 through the contact point with busbar 18 in the second joint connection 46. If the terminal plate is not joined at the second joint connection, the current may flow primarily in the terminal plate near the surface due to the contact resistance of the terminal plate. Therefore, it may not be possible to form an effective conductive path utilizing the entire stacked terminal plate, resulting in a decrease in overall conductivity.

[0087] Therefore, if adjacent terminal blocks 48 are joined together at the second joint connection 46, current flows dispersedly to all terminal blocks 48 at the second joint connection 46, which serves as the connection point with the busbar 18. Thus, a conductive path can be formed that effectively utilizes the entire stacked terminal blocks, thereby achieving good conductivity overall.

[0088] Furthermore, at least a portion of the first non-joining portion 43 and at least a portion of the second non-joining portion 45 are located outside the base body 32. Thus, the portion of the first non-joining portion 43 located outside the base body 32 is situated between the intermediate joining portion 44 and the first joining connection portion 42. Moreover, depending on the position of the first joining connection portion 42 coinciding with the coil connection end 26, the first non-joining portion 43 can easily shift in the thickness direction. Similarly, the portion of the second non-joining portion 45 located outside the base body 32 is situated between the intermediate joining portion 44 and the second joining connection portion 46. Moreover, depending on the position of the second joining connection portion 46 coinciding with the busbar 18, the second non-joining portion 45 can easily shift in the thickness direction. Therefore, misalignment of the coil connection end 26 or the busbar 18, which are opposing components, can be easily absorbed.

[0089] <About the main body of the seat> The base body 32 is fixed to the rotary motor 20, which is an example of a device, in a state of retaining the terminal 40. Here, a mounting hole 22h is formed in the housing 22 of the rotary motor 20. The mounting hole 22h is a hole that penetrates both the inside and outside of the housing 22. In this embodiment, the mounting hole 22h is an elongated through hole. A flat portion is formed in the housing 22, and the mounting hole 22h is formed in this flat portion. A threaded hole is formed on the outer periphery of the mounting hole 22h in this flat portion. With a part of the base body 32 inserted into the mounting hole 22h, the base body 32 is screwed and fixed to the housing 22 using the threaded hole.

[0090] The base body 32 is envisioned to be an insulator, such as resin. The resin forming the base body 32 is, for example, polyamide 6T (PA6T), polyphenylene sulfide (PPS), or polybutylene terephthalate (PBT), with PA6T being more preferred. If the rotary motor 20 is oil-cooled, the resin forming the base body 32 is preferably PA6T or PPS. If the rotary motor 20 is water-cooled, the resin forming the base body 32 can also be PBT. Multiple terminals 40 are supported in a certain position relative to the rotary motor 20 via the base body 32. The material constituting the base body 32 may also include additives such as anti-aging agents.

[0091] The main body 32 has a base 34, a screw tightening part 35, an extension retaining part 36, 37 and a partition part 38.

[0092] The base 34 is formed into a flat shape that is larger than the mounting hole 22h.

[0093] The screw tightening portion 35 is a portion that protrudes from the outer periphery of the base 34. In this embodiment, the seat body 32 includes two screw tightening portions 35. The two screw tightening portions 35 protrude outward from both ends along the long side of the base 34. A screw insertion hole 35h is formed in the screw tightening portion 35.

[0094] The extension retaining portion 36 protrudes from the base 34 in a state that partially covers each terminal 40. Therefore, the portion of the terminal 40 near the first engagement connection portion 42 that extends from the top end side of the extension retaining portion 36 is exposed from the seat body 32.

[0095] Furthermore, the extension retaining portion 37 protrudes from the base 34 in a state that partially covers each terminal 40. Therefore, the portion of the terminal 40 near the second engagement connection portion 46 that extends from the top side of the extension retaining portion 37 is exposed from the seat body 32.

[0096] The partition 38 is a plate-shaped portion extending from the top of the extended holding portion 36 and in a direction orthogonal to the direction in which the plurality of terminals 40 are arranged. Such a partition 38 can separate the portions of each terminal 40 that are close to the first engaging connection portion 42.

[0097] The extension and holding parts 36 and 37 can also be omitted. The separator 38 can also be omitted.

[0098] With the extended retaining part 36 inserted into the mounting hole 22h, the base 34 can contact the outer surface of the housing 22 around the mounting hole 22h. In this state, a pair of screw tightening parts 35 are disposed on a pair of threaded holes in the housing 22. By inserting the screw S through the screw insertion hole 35h and screwing it into the threaded hole of the housing 22, the seat body 32 is fixed to the housing 22.

[0099] Terminal 40 is held by base 34 in a manner that penetrates both inside and outside housing 22. In this embodiment, a plurality of (three) terminals 40 are held by base 34 in a side-by-side configuration with spaced intervals. The plurality of (three) terminals 40 are held by base 34 in a mutually insulated state.

[0100] The middle portion of the long side of the terminal 40 is embedded within the base 34 and the extension retaining portions 36 and 37. The portion of the terminal 40 on the side of the first engagement connection portion 42 protrudes from the top end of the extension retaining portion 36. The portion of the terminal 40 on the side of the second engagement connection portion 46 protrudes from the extension retaining portion 37 to the side opposite to the extension retaining portion 36.

[0101] As described above, with the main body 32 fixed to the housing 22, the first engaging connection portion 42 of the terminal 40 is positioned to coincide with the coil connection end 26. Furthermore, the second engaging connection portion 46 of the terminal 40 is positioned to coincide with the busbar 18. At this time, the first non-engaging portion 43 and the second non-engaging portion 45 can deform in the thickness direction in accordance with the position of the coil connection end 26 or the busbar 18, which are opposing components.

[0102] Alternatively, an annular sealing member 39, such as a rubber gasket, can be positioned between the seat body 32 and the mounting hole 22h. The annular sealing member 39 prevents water from entering between the housing 22 and the seat body 32. For example, the annular sealing member 39 can also be positioned in the portion of the base 34 that surrounds the extended retaining portion 36.

[0103] <Example of Manufacturing Method> An example of a method for manufacturing a terminal block will be described.

[0104] First, such as Figure 6 As shown, terminal 40 is positioned within mold 60. Mold 60 has mold surface 61 for molding the base body 32. Mold 60 has positioning portions 62 and 63, which can position the portion of terminal 40 extending from the base body 32. With both ends of terminal 40 positioned in positioning portions 62 and 63, mold 60 is closed. The middle portion of terminal 40 traverses the space surrounded by mold surface 61.

[0105] An injection port 60h is formed in the mold 60. The injection port 60h reaches the mold surface 61. Resin in a flowing state for forming the seat body 32 is supplied through the injection port 60h into the space surrounded by the mold surface 61. The resin in a flowing state can be either softened or melted by heat. The resin fills the space inside the mold, and the mold is formed into the shape defined by the mold surface 61. That is, the seat body 32 is molded with the terminal 40 as an insert portion.

[0106] When resin is injected into mold 60, resin pressure is applied to terminal 40. This resin pressure acts as a force that deforms terminal 40. The middle portion of terminal 40 is formed as an intermediate joint 44 where adjacent terminal plates 48 join together. Therefore, even with applied resin pressure, terminal 40 is difficult to deform and easily maintains its initial shape. While terminal 40 maintains its initial shape, the base body 32 is molded so that the middle portion of terminal 40 is embedded within the base body 32.

[0107] <Effects, etc.> According to the terminal block 30 configured as described above, a coil connection terminal 26 or a busbar 18, which serves as a connection to the opposite side, can be connected to the first engagement connection portion 42 or the second engagement connection portion 46. Since the first engagement connection portion 42 or the second engagement connection portion 46 are in a state where adjacent terminal plates 48 are engaged with each other, the contact resistance between the terminal plates 48 can be reduced. Therefore, good conductivity can be achieved between the first engagement connection portion 42 and the second engagement connection portion 46. Furthermore, because at least a portion of the intermediate engagement portion 44 is located within the base body 32, the intermediate engagement portion 44 is less prone to deformation when the base body 32 is molded with at least a portion of the intermediate engagement portion 44 as an embedded part. Therefore, deformation of the terminal 40 within the base body 32 can be suppressed. In addition, since at least a portion of the first non-joining portion 43 or the second non-joining portion 45 is located outside the seat body 32, even if the position of the connecting counterpart of the first joining portion 42 or the second joining portion 46 is offset relative to the seat body 32, the first non-joining portion 43 or the second non-joining portion 45 can easily deform and absorb the misalignment.

[0108] Furthermore, a first engaging connection portion 42 and a first non-engaging portion 43 are formed on one end of the terminal 40, and a second engaging connection portion 46 and a second non-engaging portion 45 are formed on the other end. Therefore, the coil connection terminal 26, serving as the first counterpart connection portion, and the busbar 18, serving as the second counterpart connection portion, can be connected via the terminal 40. In this case, the conductivity of both the first engaging connection portion 42 and the second engaging connection portion 46 is good. Additionally, because the first non-engaging portion 43 is located between the intermediate engaging portion 44 and the first engaging connection portion 42, and the second non-engaging portion 45 is located between the intermediate engaging portion 44 and the second engaging connection portion 46, misalignment between the coil connection terminal 26 and the busbar 18 can be absorbed.

[0109] Furthermore, since more than 80% of the portion of the terminal 40 located within the base body 32 is formed as an intermediate joint 44, the terminal 40 is less prone to deformation within the base body 32.

[0110] In addition, if the intermediate joint 44 extends from the base body 32, most of the terminal 40 located within the base body 32 can be used as the intermediate joint 44, making it more difficult for the terminal 40 to deform within the base body 32.

[0111] In addition, if adjacent terminal plates 48 are fused, pressed, or brazed together in the intermediate joint 44 and the joint connection 42 and 46 respectively, the adjacent terminal plates 48 are integrated together, which makes it easier to reduce the contact resistance.

[0112] Figure 7 This is a cross-sectional view showing the terminal block 30B of the first modified example. The terminal block 30B also has an annular sealing portion 58, which is located between the intermediate joint portion 44 and the body 32.

[0113] As the annular sealing portion 58, an adhesive with good adhesion to the base body 32 and the terminal 40, or a resin softer than the base body 32, can be used. The annular sealing portion 58 can be applied to the terminal 40 in a manner that surrounds the middle portion of the terminal 40, or it can be a portion molded into the terminal 40, or it can be a component externally embedded in the terminal 40. A groove for holding the position of the annular sealing portion 58 can also be formed in the portion of the terminal 40 where the annular sealing portion 58 is disposed. Preferably, the annular sealing portion 58 surrounds the periphery of the intermediate joint portion 44.

[0114] According to this modified example, liquid is difficult to pass between the terminal plates 48 at the intermediate joint 44. Furthermore, by sealing the intermediate joint with the seat body 32 using the annular sealing portion 58, liquid passage through the outer periphery of the terminal 40 can also be suppressed. Therefore, liquid flow along the terminal 40 can be effectively prevented.

[0115] (Implementation Method 2) The terminal block 130 of Embodiment 2 will be described. Figure 8 This is a perspective view showing the terminal block 130. Figure 9 This is a side view showing the non-engaged intermediate path portion 110 of the terminal block 130. It should be noted that in the description of this embodiment, the same reference numerals are used for the same constituent elements as those described in Embodiment 1, and their descriptions are omitted.

[0116] The terminal 140 in the terminal block 130 replaces the first non-connecting portion 43 in Embodiment 1 and includes a non-connecting intermediate path portion 110. The non-connecting intermediate path portion 110 is a portion that is bent in a way that eliminates the path difference between the plurality of terminal plates 48.

[0117] The non-joining intermediate path portion 110 is located between the intermediate joining portion 44 and the first joining connection portion 42. The non-joining intermediate path portion 110 is bent between the intermediate joining portion 44 and the first joining connection portion 42 in a manner that eliminates the path difference between the plurality of terminal plates 48. It should be noted that the so-called bending in a manner that eliminates the path difference between the plurality of terminal plates 48 includes: a case where the bending is in a manner that eliminates the path difference even if a path difference is generated; and a case where the bending is in a manner that does not generate a path difference in the first place.

[0118] That is, when the multiple terminal plates 48 are bent in any direction of the stacking direction, a path difference can be generated between the multiple terminal plates 48 through the outer periphery or the inner periphery of the bent portion. Therefore, the multiple terminal plates 48 are bent at least once on one side of the stacking direction and at least once on the other side of the stacking direction. The path difference of the terminal plates 48 is eliminated by at least one bent portion on one side of the stacking direction and at least one bent portion on the other side of the stacking direction.

[0119] At this time, the path difference of the bend can be affected by the length, bending radius, and angle of the bend. Therefore, by taking into account the length, bending radius, and angle of each bend, the number of bends on one side of the stacking direction, and the number of bends on the other side of the stacking direction, the path difference of the terminal board 48 can be eliminated.

[0120] The specific bending structure is as follows.

[0121] That is, the non-joining intermediate path portion 110 includes a first bent portion 114 and a second bent portion 116. The first bent portion 114 bends toward one side of the stacking direction of the terminal plate 48. The second bent portion 116 bends toward the other side of the stacking direction of the terminal plate 48. That is, the first bent portion 114 and the second bent portion 116 bend toward opposite sides of each other in the stacking direction of the terminal plate 48. It should be noted that the stacking direction of the terminal plate 48 is also the thickness direction of the terminal 140.

[0122] Furthermore, since the first bend 114 and the second bend 116 eliminate the path difference, the first bend 114 and the second bend 116 can also be bent in the same shape. It should be noted that when the first bend 114 and the second bend 116 are bent in the same shape, if the shape is within the error range, for example, if the angle difference between the second bend 116 and the first bend 114 is the same within ±10%, preferably ±5%, then it can also be evaluated as the first bend 114 and the second bend 116 being bent in the same shape.

[0123] The non-jointed intermediate path portion 110 may also have a first end-side stacked portion 113, a stacked intermediate portion 115, and a second end-side stacked portion 117.

[0124] The first end-side laminate 113 is a portion that is linearly connected to the intermediate joint 44. That is, the first end-side laminate 113 and the intermediate joint 44 extend in a straight line.

[0125] The intermediate layer 115 is connected to the first end-side layer 113 via a first bend 114. The first bend 114 can be either an obtuse angle or an acute angle. In this embodiment, the first bend 114 is an obtuse angle. The intermediate layer 115 extends in a straight line.

[0126] The second end-side laminate 117 is a portion that is linearly connected to the first joining connection portion 42. That is, the second end-side laminate 117 and the first joining connection portion 42 extend in a straight line. Furthermore, the second end-side laminate 117 is connected to the laminated intermediate portion 115 via a second bend 116. The second bend 116 can be either an obtuse angle or an acute angle. In this embodiment, the second bend 116 is an obtuse angle.

[0127] In this embodiment, because the first curved portion 114 and the second curved portion 116 are curved at the same angle, the intermediate joint portion 44 and the first joint connection portion 42 are parallel to each other. In addition, corresponding to the length of the stacked intermediate portion 115 that extends intersectingly with respect to the intermediate joint portion 44 and the first joint connection portion 42, the intermediate joint portion 44 and the first joint connection portion 42 are arranged at different positions in their thickness direction.

[0128] More specifically, the path difference is eliminated in the non-joining intermediate path section 110.

[0129] exist Figure 9 In this context, we focus on the terminal plate 48 (sometimes distinguished as terminal plate 48a) disposed on one side of the non-joining intermediate path portion 110 in the stacking direction and the terminal plate 48 (sometimes distinguished as terminal plate 48b) disposed on the other side of the non-joining intermediate path portion 110.

[0130] First, regarding the first end-side laminate 113, the middle laminate 115, and the second end-side laminate 117, there is no path difference between the terminal plate 48a and the terminal plate 48b. Therefore, focus is placed on the first bend 114 and the second bend 116.

[0131] At the first bend 114, terminal plate 48a passes through the inner peripheral side, and terminal plate 48b passes through the outer peripheral side. Therefore, the path L1(out) of terminal plate 48b at the first bend 114 is greater than the path L1(in) of terminal plate 48a at the first bend 114.

[0132] At the second bend 116, terminal plate 48a passes through the outer peripheral side, and terminal plate 48b passes through the inner peripheral side. Therefore, the path L2(in) of terminal plate 48a at the second bend 116 is smaller than the path L2(out) of terminal plate 48b at the second bend 116.

[0133] If the bending shapes of the first bending portion 114 and the second bending portion 116 are the same, then path L1(in) and path L2(in) can be made the same, and path L1(out) and path L2(out) can be made the same. Furthermore, the sum of paths L1(in) and L2(out) with respect to terminal plate 48b becomes the same as the sum of paths L1(out) and L2(in) with respect to terminal plate 48a, thus eliminating path differences.

[0134] It should be noted that the path difference is eliminated in the same way as described above regarding the relationship between the terminal plate 48 located at the non-joining intermediate path portion 110 that is more inner than the outermost side of one side in the stacking direction and the terminal plate 48 located more inner than the outermost side of the other side. Furthermore, in the case of an odd number of stacked terminal plates, the path difference is not a problem for the busbar at the center of the stacking direction, regardless of the bending direction.

[0135] With the configuration including the aforementioned non-joining intermediate path portion 110, the plurality of terminal plates 48 are bent in a manner that eliminates path differences between them. Therefore, the terminals 140 can be easily bent around the multiple bends, namely the first bend portion 114 and the second bend portion 116, thereby improving position error absorption performance. For example, the first bend portion 114 and the second bend portion 116 can be easily bent in a manner that increases or decreases their bending angle. Consequently, the first joining connection portions 42 can easily move closer to or further away along their extending direction, and their position can easily change in their thickness direction. Thus, position errors in both the long side direction and the thickness direction of the first joining connection portions 42 can be easily addressed.

[0136] Furthermore, the non-joining intermediate path portion 110 includes a first curved portion 114 and a second curved portion 116 that bend toward opposite sides in the stacking direction. When focusing on any terminal plate 48, the positions of the first curved portion 114 and the second curved portion 116, which are closer to the inner periphery and closer to the outer periphery, are opposite, so it is easy to eliminate path differences. Thus, by means of the first curved portion 114 and the second curved portion 116 that bend toward opposite sides, path differences of multiple terminal plates 48 can be easily eliminated.

[0137] In addition, if the first bend 114 and the second bend 116 are bent in the same shape, the path difference of the multiple terminal plates 48 can be eliminated more reliably.

[0138] Furthermore, the non-joined intermediate path portion 110 has a first end-side laminated portion 113, a laminated intermediate portion 115, and a second end-side laminated portion 117. In this case, the laminated intermediate portion 115 is connected to the first end-side laminated portion 113 and the second end-side laminated portion 117 via bending portions 114 and 116, so the position of the first joining connection portion 42 can be arranged at different positions in their thickness directions. Moreover, by bending and deforming the first bending portion 114 and the second bending portion 116, the first joining connection portion 42 can be easily shifted in the extension direction and the thickness direction. As a result, positional errors are easily absorbed.

[0139] In addition, when manufacturing a terminal 140 having the above-mentioned non-joining intermediate path portion 110, a stack of multiple terminal plates 48 is prepared, and the terminal plates 48 are joined together to form a first joining connection portion 42, an intermediate joining portion 44, and a second joining connection portion 46. Then, the multiple terminal plates 48 are bent in a manner that eliminates the path difference between the multiple terminal plates 48, and the non-joining intermediate path portion 110 can be formed.

[0140] Therefore, after forming the first connecting portion 42, the intermediate connecting portion 44, and the second connecting portion 46, the multiple terminal plates 48 can be easily bent. Thus, the processing of the first connecting portion 42, the intermediate connecting portion 44, and the second connecting portion 46 can be performed simultaneously or continuously, making the manufacturing of the terminal 140 easier. This ease of processing also shortens manufacturing time. Furthermore, the simplification of the manufacturing process and the reduction in manufacturing time also reduce manufacturing costs.

[0141] <Variation Example> Various variations will be described based on Embodiment 2 described above. Hereinafter, the differences from Embodiment 2 will be mainly explained.

[0142] Figure 10 This is a perspective view showing the non-jointed intermediate path portion 210 of the second modified example. Figure 11 This is a side view showing the non-jointed intermediate path portion 210.

[0143] The non-jointed intermediate path portion 210 replaces the first curved portion 114 and the second curved portion 116 in embodiment 2 and includes a large curved portion 215, a first small curved portion 214 and a second small curved portion 216.

[0144] The bending paths of the first small bend 214 and the second small bend 216 are each shorter than the bending path of the large bend 215. In this modified example, the first small bend 214, the second small bend 216, and the large bend 215 are bent into an arc shape. The bending radii and central angles of the first small bend 214 and the second small bend 216 are the same. The bending radius and central angle of the large bend 215 are greater than those of the first small bend 214 and the second small bend 216. Therefore, the bending path of the large bend 215 is greater than the bending paths of the first small bend 214 and the second small bend 216.

[0145] In this modified example, the large curved portion 215 is arc-shaped, more specifically, semi-circular. For example, the first small curved portion 214 and the second small curved portion 216 are quarter-circular.

[0146] Furthermore, the first small bend 214 is a portion connected to one end of the large bend 215 and bends towards the outer periphery of the large bend 215. The second small bend 216 is a portion connected to the other end of the large bend 215 and bends towards the outer periphery of the large bend 215 in the opposite direction to the first small bend 214. For example, the central angle between the first small bend 214 and the second small bend 216 is 90 degrees. The first small bend 214 and the second small bend 216 bend radially towards each other in opposite directions with respect to the curvature center of the large bend 215. The large bend 215 is located between the first small bend 214 and the second small bend 216.

[0147] The first end-side laminate 213 is connected to the outer end of the first small bend 214, and the first joint connection 42 is linearly connected to the outer end of the first end-side laminate 213. The second end-side laminate 217 is connected to the outer end of the second small bend 216, and the intermediate joint 44 is linearly connected to the outer end of the second end-side laminate 217.

[0148] exist Figure 11 In this context, we focus on the terminal plate 48 (sometimes 48a) disposed on one side of the stacking direction and the terminal plate 48 (sometimes 48b) disposed on the other side of the non-joining intermediate path portion 210.

[0149] First, regarding the first end-side laminate 213 and the second end-side laminate 217, there is no path difference between the terminal plate 48a and the terminal plate 48b. Therefore, focus is placed on the large bend 215, the first small bend 214, and the second small bend 216.

[0150] At the first small bend 214 and the second small bend 216, terminal plate 48a passes through the inner peripheral side, and terminal plate 48b passes through the outer peripheral side. Therefore, in each of the first small bend 214 and the second small bend 216, the path M1 (out) of terminal plate 48b is greater than the path M1 (in) of terminal plate 48a.

[0151] At the large bend 215, terminal plate 48a passes through the outer peripheral side, and terminal plate 48b passes through the inner peripheral side. Therefore, at the large bend 215, the path M2(in) of terminal plate 48b is smaller than the path M2(out) of terminal plate 48a.

[0152] Because the path of the large bend 215 is longer than the paths of the first small bend 214 and the second small bend 216, it has a greater impact on the path difference.

[0153] Therefore, the path difference is eliminated by more (here, two) first small bends 214 and second small bends 216, relative to a smaller number (one in this case) of large bends 215.

[0154] That is, the path difference is eliminated by making the sum of the two paths M1(in) and one path M2(out) about the terminal plate 48a the same as the sum of the two paths M1(out) and one path M2(in) about the terminal plate 48b.

[0155] For the other terminal blocks 48, the path difference is eliminated in the same way as described above.

[0156] According to this variation, the elimination of path difference can achieve the same effect as in embodiment 2.

[0157] By combining the first small bend 214, the second small bend 216, and the large bend 215, the path difference between multiple terminal blocks 48 can be eliminated.

[0158] Furthermore, the large bend 215 is arc-shaped, and the first small bend 214 and the second small bend 216 are connected to each end of the large bend 215 and bend in a manner that extends to opposite sides. Therefore, the large bend 215, the first small bend 214, and the second small bend 216 are deformed, thereby allowing their end portions to be easily and conceivably repositioned.

[0159] Figure 12 This is a perspective view showing the non-jointed intermediate path portion 310 of the third modified example.

[0160] The non-jointed intermediate path portion 310 replaces the first curved portion 114 and the second curved portion 116 in embodiment 2 and includes the first curved portion 313, the second curved portion 315, the third curved portion 317 and the fourth curved portion 319.

[0161] The first curved portion 313 is connected to the first joining portion 42, and the fourth curved portion 319 is connected to the intermediate joining portion 44. The first curved portion 313 and the fourth curved portion 319 are curved to opposite sides in the stacking direction. In addition, the first curved portion 313 and the fourth curved portion 319 are curved at the same angle.

[0162] The second curved portion 315 is connected to the first curved portion 313 via a straight-extending first intermediate portion 314. The third curved portion 317 is connected to the fourth curved portion 319 via a straight-extending third intermediate portion 318. The second curved portion 315 and the third curved portion 317 are curved to opposite sides in the stacking direction. Furthermore, the second curved portion 315 and the third curved portion 317 are curved at the same angle. The second curved portion 315 and the third curved portion 317 are connected via a straight-extending second intermediate portion 316.

[0163] According to this non-jointed intermediate path portion 310, the elimination of path differences can achieve the same effect as in Embodiment 2. Furthermore, compared to Embodiment 2, there are more bends, so improved position error absorption performance can be expected.

[0164] Figure 13 This is a perspective view showing the non-jointed intermediate path portion 410 of the fourth modified example.

[0165] The non-joining intermediate path portion 410 replaces the first bent portion 114 and the second bent portion 116 in Embodiment 2 and includes a torsional bent portion 414 that is bent in a torsional manner. The torsional bent portion 414 is a portion that is twisted into a propeller shape with the center of the width direction and the center of the stacked terminal plate 48 as the center.

[0166] The number of turns in the spiral formed by the twisted bend 414 is arbitrary; for example, it can be 1 / 2 turn. That is, the twisted bend 414 can also be twisted so that the first joint connection 42 and the intermediate joint 44 are flipped inside out. The twisted bend 414 can be twisted less than 1 / 2 turn or more than 1 / 2 turn.

[0167] According to the non-joining intermediate path portion 410, each of the terminal plates 48 is twisted into the same shape, thus achieving a shape that eliminates path differences. Therefore, in terms of eliminating path differences, the same effect as in Embodiment 2 can be obtained.

[0168] Furthermore, the non-jointed intermediate path portion 410, which has a torsional bend portion 414, can be easily deformed in the stacking direction in each of its extension directions.

[0169] For example, the portion of the torsional bend 414 near the intermediate joint 44 can be easily bent in the thickness direction (P1) of the intermediate joint 44. Additionally, for example, the central portion of the torsional bend 414 in its extending direction can be easily bent in the thickness direction (P2) of that central portion. Furthermore, the intermediate joint 44 in the torsional bend 414 and the aforementioned central portion can be easily bent in a direction (P3) intersecting both directions P1 and P2. Therefore, the first joint connection portion 42 can be easily displaced relative to each other in its width direction, thickness direction, and directions intersecting them.

[0170] Figure 14 This is a perspective view showing the terminal 540 of the fifth modified example.

[0171] In addition to the non-joining intermediate path portion 510 which is bent in a way that eliminates the path difference between the terminal plates 48, the terminal 540 also has a joining bending portion 530.

[0172] The joining bending portion 530 is the portion in which the multiple terminal plates 48 are joined, in which the multiple terminal plates 48 are bent in the stacking direction.

[0173] That is, regarding the aforementioned non-joining intermediate path portion 510, a condition is added for bending in a manner that eliminates the path differences between the plurality of terminal plates 48. Furthermore, it may be required that the first joining connection portion 42 be positioned in a location where it can be connected to the connecting object. It may be difficult to meet both conditions.

[0174] Therefore, in this modified example, a joining bend 530 is formed independently of the aforementioned non-joining intermediate path portion 510. Like the intermediate joining portion 44, the joining bend 530 is a portion where the terminal plate 48 is joined and bent. When this portion bends, the terminal plates 48 do not misalign with each other and bend integrally. Therefore, the effect of the path length difference caused by the difference in the inner and outer circumferences of the bend portion 530a is unlikely to extend beyond the bend portion 530a. Therefore, misalignment of the ends or separation of the terminal plates 48 due to path differences is less likely to occur outside the bend portion 530a.

[0175] More specifically, in this embodiment, the non-joined intermediate path portion 510 for eliminating path differences can also be formed with... Figure 11 and Figure 12 The non-jointed intermediate path portion 210 in the modified example shown has the same configuration.

[0176] The joining bend 530 is connected to and bent at one end of the aforementioned non-joining intermediate path portion 510. Here, the joining bend 530 is the portion of the terminal plate 48 that is bent at a right angle to the joining portion.

[0177] The intermediate joint portion 44 is connected to the non-joining intermediate path portion 510, and the first joint connection portion 42 is connected to the joint bending portion 530.

[0178] According to this modified example, regarding the curved portion that does not help eliminate path differences, a joining curved portion 530 can be formed in the portion where multiple terminal plates 48 are joined, where the multiple terminal plates 48 are bent in the stacking direction. Therefore, it is easy to achieve a configuration in which the non-jointed portions of the multiple terminal plates 48 are bent in a way that eliminates the path differences between the multiple terminal plates 48. That is, the path freedom of the terminal 540 can be increased.

[0179] (Implementation Method 3) The terminal block 630 of Embodiment 3 will be described. Figure 15 This is a perspective view showing the terminal block 630. It should be noted that in the description of this embodiment, the same reference numerals are used for the same constituent elements as those described in Embodiments 1 and 2, and their descriptions are omitted.

[0180] In the terminal block 630, a laminated busbar 610 is connected to the first engagement connection portion 42 of the terminal 40 described in Embodiment 1. The connection between the laminated busbar 610 and the first engagement connection portion 42 can be configured in the same way as the engagement of the terminal plates, or it can be made by screw tightening or a fitting structure, etc.

[0181] The stacked busbar 610 has multiple stacked busbars 612.

[0182] The stacked busbar 610 includes a non-jointed intermediate path portion 620 that bends to eliminate path differences between the plurality of buses 612. A busbar end 622 is provided at one end of the non-jointed intermediate path portion 620, and a busbar end 624 is provided at the other end. The busbar end 622 is connected to the first joint connection portion 42, and the busbar end 624 is connected to the opposite-side connection member.

[0183] Busbar 612 is a plate-shaped member similar to terminal block 48. At the ends 622 and 624 of the busbar, adjacent busbars are joined to each other in the same manner as terminal blocks 48.

[0184] At the non-joined intermediate path portion 620, the first bend portion 628 and the second bend portion 629 are bent in a manner that eliminates the path differences between the plurality of busbars 612. In this embodiment, the non-joined intermediate path portion 620 is bent in the same way as the non-joined intermediate path portion 110. The non-joined intermediate path portion 620 may also be configured in the same way as the aforementioned non-joined intermediate path portions 210, 310, 410, and 510.

[0185] According to this embodiment 3, by adding a relay busbar 610 to the terminal 40, the position error absorption performance is further improved.

[0186] By constructing the non-joined intermediate path portion 620 in the same manner as the aforementioned non-joined intermediate path portions 110, 210, 310, 410, and 510, the same functional effect as the non-joined intermediate path portions 110, 210, 310, 410, and 510 can be obtained.

[0187] (Modified example) It should be noted that the components described in the above embodiments and variations can be appropriately combined as long as they do not contradict each other. Explanation of reference numerals in the attached figures

[0188] 10 Mechatronics Unit 12 Inverters 18 busbars 18h Screw Through Hole 20 Rotary Electric Machine 22. Shell 22h Assembly hole 24 Armature 26 Coil connection terminal 28 Excitation Department 30, 30B, 130, 630 terminal blocks 32 main buildings 34 Base 35 Screw tightening part 35h Screw through hole 36, 37 Extended retaining section 38. Divider 39. Annular sealing component 40, 140, 540 terminals 42 First joint connection part 42h First screw through hole 43. First non-jointing part 44 Intermediate joint 45. Second non-jointing part 46 Second joint connection part 46h Second screw insertion hole Terminal blocks 48, 48a, and 48b 58 Annular sealing part 60 molds 60h Injection Portal 61 Mold Surface Positioning sections 62 and 63 110, 210, 310, 410, 510 Non-jointed intermediate path section 113, 213 First end side laminate 114, 313, 628 First bend 115 Layered Middle Section 116, 315, 629 Second bend 117, 217 Second end side laminate 214 First small bend 215 Large bend 216 Second small bend 314 Part 1 (middle section) 316 Second Middle Section 317 Third bend 318 Third Middle Section 319 Fourth bend 414 Torsional bending section 530 Joint bend 530a Bending section 610 laminated busbar 612 busbar 620 Non-jointed intermediate path section Busbar ends of 622 and 624 N nut S screw

Claims

1. A terminal block comprising: Terminals, including multiple stacked terminal boards; and The main body of the base is used to hold the terminals in place within the device. The terminal is formed in the shape of a strip. The terminals include: The intermediate joint is formed by joining adjacent terminal plates together at the midpoint of the long side of the terminal. The connecting portion is formed by adjacent terminal plates joining each other at a position away from the intermediate connecting portion along the long side of the terminal; and The non-joining portion is formed by stacking adjacent terminal plates between the intermediate joining portion and the joining connection portion in a non-joining state. At least a portion of the intermediate joint is located within the seat body. The connecting portion is located outside the main body of the seat. At least a portion of the non-jointing portion is located outside the seat body.

2. The terminal block according to claim 1, wherein, The joining connection portion has a first joining connection portion and a second joining connection portion. The first joining connection portion is located away from the intermediate joining portion on one side in the long side direction of the terminal, and the second joining connection portion is located away from the intermediate joining portion on the other side in the long side direction of the terminal. The non-joining portion has a first non-joining portion and a second non-joining portion, the first non-joining portion being located between the intermediate joining portion and the first joining connection portion, and the second non-joining portion being located between the intermediate joining portion and the second joining connection portion.

3. The terminal block according to claim 1 or claim 2, wherein, More than 80% of the portion of the terminal located within the main body of the base is the intermediate joint portion.

4. The terminal block according to claim 1 or claim 2, wherein, The intermediate joint extends from the seat body.

5. The terminal block according to claim 1 or claim 2, wherein, It also has an annular sealing portion, which is located between the intermediate joint portion and the seat body.

6. The terminal block according to claim 1 or claim 2, wherein, In each of the intermediate joint and the joint connection, adjacent terminal plates are fused, pressed, or brazed together.

7. The terminal block according to claim 1 or claim 2, wherein, The non-joined portion includes a non-joined intermediate path portion that is bent in a manner that eliminates the path difference between the plurality of terminal plates.

8. The terminal block according to claim 7, wherein, The non-jointed intermediate path portion includes a first bend and a second bend. The first bend and the second bend bend to opposite sides in the stacking direction of the terminal plate.

9. The terminal block according to claim 1 or claim 2, wherein, The terminal is connected to a laminated busbar. The stacked busbar has multiple stacked busbars. The stacked busbars include a non-jointed intermediate path portion that bends in a manner that eliminates the path differences between the plurality of busbars.

10. The terminal block according to claim 9, wherein, The non-jointed intermediate path portion includes a first bend and a second bend. The first bend and the second bend bend to opposite sides in the stacking direction of the busbar.

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