Cable routing structure and cable routing substrate

Abstract

One embodiment provides a wiring structure and wiring substrate that facilitate the connection of electronic components to busbars. [Solution] The cable routing structure comprises a base member and a terminal block. The base member has a first recess that is recessed in a first direction. The terminal block is housed in the first recess and has terminals that can be electrically connected to electronic components. The cable routing structure has an air gap between the terminal block and the first recess.

Description

Technical Field

[0001] Embodiments of the present invention relate to a wiring structure and a wiring substrate.

Background Art

[0002] A wiring structure having a recess for accommodating electronic components is known.

[0003] For example, Patent Document 1 discloses "a vehicle power storage device including a power storage device that supplies power to a traveling motor via an inverter, a support frame, a base plate, and a battery protection function unit". The support frame supports the power storage device and includes a surface that supports the terminals of the power storage device. The base plate is coupled to the support frame so as to face the surface of the support frame. The battery protection function unit includes a main switch, a fuse, sensor means for detecting overcurrent, and contact means for interrupting the output circuit of the battery when overcurrent is detected by the sensor means. In the vehicle power storage device, the terminals extend onto the base plate and are connected to the battery protection function unit. The vehicle power storage device described in Patent Document 1 has a recess provided on the side surface of the base plate on the power storage device side. The main switch and the fuse are accommodated and arranged in the recess, and the sensor means and the contact means are arranged in a region that does not face the recess on the side surface of the base plate opposite to the power storage device. Further, it is also characterized in that a plate-like conductive member that connects the positive electrode and the negative electrode at the neutral point of the power storage device to the main switch is arranged in the recess formed on the side surface of the base plate on the power storage device side.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] In the vehicle energy storage device disclosed in Patent Document 1, the plate-shaped conductive member connects the terminals of the energy storage device to the terminals of one end of the fuse housed within it. However, depending on the dimensional tolerances during the formation of the conductive member, it may be difficult to connect the terminal at one end of the fuse to the plate-shaped conductive member.

[0006] One embodiment provides a wiring structure and wiring substrate that facilitate the connection of electronic components to busbars. [Means for solving the problem]

[0007] A wiring structure according to one embodiment comprises a base member and a terminal block. The base member has a first recess that is recessed in a first direction. The terminal block has a terminal portion that is housed in the first recess and can be electrically connected to an electronic component. The wiring structure has an air gap between the terminal block and the first recess. [Effects of the Invention]

[0008] According to one embodiment, a wiring structure and wiring substrate can be provided that facilitate the connection of electronic components to busbars. [Brief explanation of the drawing]

[0009] [Figure 1] A perspective view showing the cable routing structure of an embodiment. [Figure 2] A perspective view showing the cable routing structure of the embodiment, excluding the cover portion. [Figure 3] A perspective view showing a partially disassembled cable routing structure of the embodiment. [Figure 4] An enlarged view showing the first recess of the embodiment. [Figure 5] A magnified view of a portion of Figure 2. [Figure 6] Cross-sectional view along the line VI-VI shown in Figures 1 and 5. [Figure 7] A magnified view of a portion of Figure 2. [Figure 8]A cross-sectional view along the line VIII-VIII shown in Figure 7. [Figure 9] Cross-sectional view along the line IX-IX shown in Figures 1 and 5. [Modes for carrying out the invention]

[0010] The embodiments will be described below with reference to the drawings. In the following description, components having the same or similar functions will be denoted by the same reference numerals. Duplication of these components may be omitted. Note that the components described below do not limit the scope of the embodiments.

[0011] In this disclosure, terms are defined as follows: “Connection” may include electrical connections, not just mechanical ones. That is, “Connection” may include cases where two elements to be connected are connected with another element in between, not just directly connected. “Accommodation” may include cases where only a portion of a part is accommodated (with the remaining portion of the part protruding), not just the entire part. “Parallel,” “orthogonal,” or “same” may include cases where they are “approximately parallel,” “approximately orthogonal,” or “approximately the same,” respectively.

[0012] In this disclosure, the +X direction, -X direction, +Y direction, -Y direction, +Z direction, and -Z direction are defined as follows: The X direction is one direction within the plane in which the base plate 11, described later, extends. The +X direction is one of the X directions. The -X direction is the direction opposite to the +X direction. Hereinafter, when the +X direction and the -X direction are not distinguished, they will simply be referred to as the "X direction". The Y direction is a direction that intersects (e.g., is orthogonal to) the X direction within the plane in which the base plate 11, described later, extends. The +Y direction is one of the Y directions. The -Y direction is the direction opposite to the +Y direction. Hereinafter, when the +Y direction and the -Y direction are not distinguished, they will simply be referred to as the "Y direction". The +Z direction and the -Z direction are directions that intersect (e.g., are orthogonal to) the X direction and the Y direction. The +Z direction is the direction from the second surface 11a2 to the first surface 11a1 in the base plate 11, described later. The -Z direction is the opposite direction to the +Z direction. In the following, when the +Z and -Z directions are not distinguished, they will simply be referred to as the "Z direction." The Z direction is an example of a "first direction."

[0013] In the following, when the X and Y directions are not distinguished, they may be referred to as the "horizontal direction." In the following, the Z direction may be referred to as the "vertical direction." Also, in the following, the +Z direction may be referred to as "up," and the -Z direction as "down." However, these expressions are for the convenience of explanation and do not limit the direction of gravity of the cable routing substrate 1 (the installation orientation of the cable routing substrate 1).

[0014] (Embodiment) <1. Configuration of the wiring board> The wiring substrate 1 is a member that forms at least a part of the current-carrying path between electronic components, and / or at least a part of the current-carrying path between an electronic component and an external device, and / or at least a part of the current-carrying path between external devices. In the present disclosure, the "wiring substrate" means a substrate-type wiring structure. "Substrate-type" means that when viewed as a whole regardless of its fine shape, it is plate-shaped along one plane. Note that in the present disclosure, the "plate shape" is not limited to being completely flat, and may include cases where there are partially fixed structures or ribs protruding in the Z direction. In the present embodiment, the wiring substrate is plate-shaped along the X and Y directions.

[0015] Further, the wiring substrate 1 is applied to in-vehicle devices mounted on vehicles such as EV (Electric Vehicle), HEV (Hybrid Electric Vehicle), or PHEV (Plug-in Hybrid Electric Vehicle). Such in-vehicle devices are connected to a plurality of external devices existing outside. The in-vehicle device having the wiring substrate 1 mediates the connection between the plurality of external devices. That is, the wiring substrate 1 is used, for example, in an electrical connection unit called an "electrical connection box" or a "junction box". However, the electrical connection unit is not limited to a box-shaped device.

[0016] Here, the external device may include, for example, a battery pack having a plurality of batteries, a device including an inverter for driving a vehicle motor, etc., and a charger that is a device for supplying power to charge the battery pack.

[0017] As shown in FIGS. 1 to 3, the wiring substrate 1 includes a wiring structure 10, an electronic component 20, at least one or more bus bars 30, at least one or more bolts 40, and at least one or more connection terminals 60. Note that the wiring substrate 1 may include the bolts 40 as necessary. The wiring structure 10 has a function of facilitating the connection between the electronic component 20 and the bus bar 30. The wiring structure 10 includes a base plate 11, a terminal block 12, and a cover portion l3.

[0018] (Configuration of the Base Plate) The base plate 11 is a holding member to which various components described later can be attached. The base plate 11 is an example of a "base member". The base plate 11 extends in the X and Y directions. The base plate 11 is made of, for example, synthetic resin and has insulating properties. The base plate 11 includes, for example, a flat portion 110, a locking portion 111, and a stepped portion 112. Note that the base plate 11 may be provided with the stepped portion 112 as needed.

[0019] (Flat Portion) The flat portion 110 is a portion formed in a plate shape within the base plate 11. The flat portion 110 is in the form of a plate along the horizontal direction. The flat portion 110 forms the main part of the base plate 11. The flat portion 110 forms the base (insulating base) of the base plate 11. The flat portion 110 may have a plurality of ribs. The flat portion 110 has a first surface 11a1 and a second surface 11a2.

[0020] The first surface 11a1 is a surface of the base plate 11 that faces one side in the first direction, that is, the +Z direction. The first surface 11a1 is a surface on one side of the base plate 11 and is a plane along the horizontal direction. On the first surface 11a1, an electronic component 20 and a bus bar 30 described later are provided.

[0021] The second surface 11a2 is a surface of the base plate 11 that faces the other side (opposite side) in the first direction, that is, the -Z direction. The second surface 11a2 is a surface of the base plate 11 that faces the opposite side of the first surface 11a1 and is a plane along the horizontal direction. Note that the thickness direction (plate thickness direction) of the flat portion 110 is the Z direction.

[0022] Also, the flat portion 110 has at least one or more first recessed portions 11r. The flat portion 110 in the present disclosure has one first recessed portion 11r.

[0023] The first recess 11r is recessed in a first direction (for example, the Z direction). The first recess 11r is formed to accommodate at least a part of the terminal block 12, which will be described later. Figure 4 shows an enlarged view of the vicinity of the first recess 11r. The first recess 11r is formed on the first surface 11a1 of the base plate 11.

[0024] The first recess 11r is formed to extend horizontally. When viewed from the first direction, the first recess 11r is slightly larger than the terminal block 12. Therefore, a gap s is provided between the housed terminal block 12 and the first recess 11r. The first recess 11r covers at least a portion of the housed terminal block 12.

[0025] The first recessed portion 11r has a bottom surface 11r1 and a side circumferential surface 11r2.

[0026] The base surface 11r1 is a surface facing the +Z direction. The base surface 11r1 extends horizontally. The base surface 11r1 is formed along the first surface 11a1.

[0027] The side surface 11r2 is a surface that extends from the bottom surface 11r1 along the +Z direction. The side surface 11r2 in the first recess 11r surrounds the bottom surface 11r1.

[0028] (Locking part) The locking portion 111 is used to lock the base plate 11 and the terminal block 12. An example of the locking portion 111 is a snap-fit ​​claw. The snap-fit ​​claw has an arm portion 111ar and a protruding portion 111p which is a part of the arm portion 111ar that protrudes. In this embodiment, the arm portion 111ar is located on the side surface 11r2 of the first recess portion 11r. The arm portion 111ar is partially bent and is connected to the flat portion 110 via the side surface 11r2.

[0029] The protruding portion 111p extends from the arm portion 111ar in a direction intersecting the direction in which the arm portion 111ar extends (for example, the Y direction). In this embodiment, the protruding portion 111p extends toward the terminal block 12 in the Y direction and engages with the holding portion 122 described later. When the protruding portion 111p is pressed when it engages with the holding portion 122, the arm portion 111ar oscillates in a predetermined direction (for example, the Y direction).

[0030] (Stepped section) The stepped portion 112 has the function of reducing the contact area between the first recessed portion 11r and the terminal block 12. By reducing the contact area between the first recessed portion 11r and the terminal block 12, the terminal block 12 can move smoothly relative to the first recessed portion 11r. As shown in Figure 4, the stepped portion 112 protrudes from the bottom surface 11r1 of the flat portion 110 in the +Z direction. When the terminal block 12 rides onto the stepped portion 112, a gap s is provided between the first recessed portion 11r and the terminal block 12. The stepped portion 112 may also be a spacer laid on the bottom surface 11r1.

[0031] (Terminal block configuration) The terminal block 12 is a retaining member on which electronic components 20 can be attached. The terminal block 12 is housed in the first recess 11r. Since the wiring structure 10 has an air gap s between the housed terminal block 12 and the first recess 11r, the terminal block 12 is movable in the horizontal plane when housed.

[0032] As shown in Figures 2-3 and 5-8, the terminal block 12 comprises a main body portion 120, a terminal portion 121, a holding portion 122, at least one first wall portion 123, and at least one second wall portion 124. The terminal block 12 in this disclosure comprises two first wall portions 123 and two second wall portions 124.

[0033] The main body portion 120 is housed in the first recess portion 11r. When viewed from the first direction, the main body portion 120 is slightly smaller than the first recess portion 11r. The main body portion 120 has a thickness that allows it to accommodate at least a portion of the terminal portion 121 in the first direction (for example, the Z direction). The main body portion 120 is made of, for example, synthetic resin and has insulating properties. The main body portion 120 has a first surface 120a1 and a second surface 120a2.

[0034] The first surface 120a1 is the surface facing the +Z direction. The second surface 120a2 is the surface facing the -Z direction. The second surface 120a2 faces the first recessed portion 11r. When the base plate 11 has a stepped portion 112, the second surface 120a2 faces the bottom surface 11r1 with a gap between them.

[0035] Furthermore, the main body portion 120 has at least one second recess 120r. In this disclosure, the main body portion 120 has two second recesses 120r. One second recess 120r is aligned in a third direction with respect to the other second recess 120r.

[0036] (Second depression) The second recess 120r is recessed in the first direction (for example, the Z direction). The second recess 120r is formed to accommodate at least a portion of the terminal portion 121. The second recess 120r is formed on the first surface 120a1 of the main body portion 120.

[0037] (terminal part) The terminal portion 121 can electrically connect the electronic component 20 to the object. For example, in this disclosure, the terminal portion 121 electrically connects the electronic component 20 to the busbar 30.

[0038] The terminal portion 121 comprises at least one nut 121n. In this disclosure, the terminal portion 121 comprises two nuts 121n. At least a portion of the terminal portion 121 is housed in a second recess 120r. For example, in this disclosure, one nut 121n is positioned on the -X side with respect to the first recess 11r, and the other nut 121n is positioned on the +X side. The busbar 30 is fixed to the terminal portion 121 together with the first connection portion 201a and / or the second connection portion 201b of the electronic component 20 by bolts 40 that are screwed into the nuts 121n.

[0039] (holding part) The retaining portion 122 is used to maintain the locked state between the base plate 11 and the terminal block 12 by the locking portion 111. An example of the retaining portion 122 is the protruding portion 122p. As shown in Figure 8, the protruding portion 122p is positioned to protrude from the main body portion 120 in a direction intersecting the direction in which the arm portion 111ar extends. In this disclosure, the protruding portion 122p protrudes from the main body portion 120 toward the base plate 11 in the Y direction. When the base plate 11 and the terminal block 12 are locked together, the protruding portion 122p causes the arm portion 111ar to oscillate in a predetermined direction.

[0040] (First wall section and second wall section) The first wall portion 123 and the second wall portion 124 protect the electronic component 20 from external impacts. As shown in Figure 9, the first wall portion 123 is erected from the main body portion 120. The second wall portion 124 is erected from the main body portion 120. The first wall portion 123 and the second wall portion 124 hold the first end portion 200a (or second end portion 200b) of the main body portion 200 of the electronic component 20, which will be described later. The second wall portion 124 faces the first wall portion 123 with the electronic component 20 in between. In the terminal block 12, the first wall portion 123 is located on the +Y direction side. In the terminal block 12, the second wall portion 124 is located on the -Y direction side. When the first end portion 200a (or the second end portion 200b) comes into contact with the first wall portion 123 and the second wall portion 124 from the first direction, the first wall portion 123 and the second wall portion 124 grip the first end portion 200a (or the second end portion 200b).

[0041] (Composition of the cover section) As shown in Figures 1 and 9, the cover portion 13 is assembled to the base member in a first direction (for example, the Z direction). Upon assembly, the cover portion 13 covers the electronic component 20. Specifically, the cover portion 13 is assembled to the base plate 11 so as to cover the electronic component 20 in the Z direction. The cover portion 13 is positioned, for example, as a member for preventing fingers from touching the current-carrying circuit in an electrical connection unit in which a wiring substrate 1 is used. The cover portion 13 is made of, for example, synthetic resin and has insulating properties. The cover portion 13 comprises an intermediate plate 131 and a main cover 132. The main cover 132 is an example of a "cover member".

[0042] The intermediate plate 131 is provided so as to be sandwiched between the main cover 132 and the base plate 11. The intermediate plate 131 can electrically connect the wiring substrate 1 and external equipment. In this disclosure, "external equipment" refers to electrical equipment located outside the electrical connection unit. External equipment includes, but is not limited to, a battery unit mounted on a vehicle or an inverter for driving the vehicle's motor. The intermediate plate 131 has grooves formed therein for routing wires extending from the outside. In addition, the intermediate plate 131 has openings corresponding to the connection terminals 60 provided on the wiring substrate 1. The connection terminals 60 are inserted through these openings. In the intermediate plate 131 of this disclosure, the connection terminals 60 protrude through the openings, and each wire is electrically connected to the terminal portion. Each wire is insulated from each other by grooves formed in the intermediate plate 131. The intermediate plate 131 of this disclosure exposes the electronic components 20 toward the main cover 132.

[0043] The main cover 132 covers the base plate 11 and the intermediate plate 131 from the +Z direction. The main cover 132 has a third recessed portion 132r that is recessed in the direction opposite to the direction facing the electronic component 20 (for example, the +Z direction). The main cover 132 also has a projection 132p in the third recessed portion 132r that protrudes toward the electronic component 20. The projection 132p includes a first projection 132p1 and a second projection 132p2. In the first direction, the projection 132p contacts at least one of the first wall portion 123 and the second wall portion 124. In the projection 132p in this disclosure, as shown in Figure 9, in the first direction, the first projection 132p1 contacts the first wall portion 123 and the second projection 132p2 contacts the second wall portion 124. The projection 132p may also be a continuous projection consisting of a first projection 132p1 and a second projection 132p2.

[0044] (Configuration of electronic components) The electronic component 20 is held on the terminal block 12. The electronic component 20 is arranged on the first surface 11a1 side. The electronic component 20 is a fuse, relay (e.g., mechanical relay or semiconductor relay), resistor (precharge resistor, etc.), capacitor, various sensors (e.g., current sensor or voltage sensor), ferrite core, etc. For example, the electronic component 20 in this disclosure is a fuse. The electronic component 20 has a main body 200 and a connection part 201 (first connection part 201a, second connection part 201b).

[0045] As shown in Figures 2-3 and 5, the main body 200 has an axis in a direction intersecting the first direction and is formed in a columnar shape with respect to this axis. The main body 200 extends in the axial direction. The axis in this disclosure is along a direction intersecting the first direction (for example, the X direction). The main body 200 has a first end 200a and a second end 200b.

[0046] The first end 200a and the second end 200b are electrically connectable terminal portions in the main body 200. The first end 200a and the second end 200b include the end faces of the main body 200 in the X direction. These end faces are surfaces facing outward in the X direction. The first end 200a and the second end 200b are separated from each other in the axial direction (e.g., the X direction). In the main body 200, the first end 200a is located on the +X side. In the main body 200, the second end 200b is located on the -X side. The main body 200 is connected to the connection portion 201 at each of the first end 200a and the second end 200b.

[0047] The connecting portion 201 is connected to the main body portion 200. The connecting portion 201 includes a first connecting portion 201a and a second connecting portion 201b. The first connecting portion 201a and the second connecting portion 201b are separated from each other in the axial direction (e.g., the X direction). The first connecting portion 201a is located on the -X direction side with respect to the second connecting portion 201b. The second connecting portion 201b is located on the +X direction side with respect to the first connecting portion 201a. The connecting portion 201 (first connecting portion 201a, second connecting portion 201b) has a first member 201f and a second member 201s.

[0048] The first member 201f is connected to the ends (first end 200a, second end 200b) of the main body 200. The first member 201f extends from these ends (first end 200a, second end 200b) in a direction intersecting the axial direction (for example, the +Z direction). The first member 201f is connected to the second member 201s at the end on the +Z direction side.

[0049] The second member 201s is a plate-shaped member extending axially (for example, in the X direction) from the first member 201f. The second member 201s has a through hole 201h through which a bolt 40 can be inserted. In this disclosure, the thickness direction of the second member 201s is the first direction (for example, the Z direction). When viewed from the axial direction, the second member 201s is positioned away from the main body 200. In this disclosure, when viewed from the axial direction, the second member 201s is positioned away from the main body 200 in the first direction (for example, the Z direction). The second member 201s is fixed to the terminal portion 121 together with the busbar 30 by a bolt 40 inserted through the through hole 201h.

[0050] Furthermore, the electronic component 20 is not limited to a fuse, as long as it is held by the terminal block 12 and fixed to the terminal portion 121 together with the bus bar 30.

[0051] (Bus bar configuration) The busbar 30 is a routing member (electrical connection member) included in the routing substrate 1. For example, the busbar 30 is a routing member for connecting an electronic component 20 to an external device. Alternatively, the busbar 30 may be a routing member for electrically connecting multiple electronic components 20. The busbar 30 is electrically connected to the electronic component 20 by being fixed to the terminal portion 121 together with the second member 201s. The busbar 30 is made of metal (e.g., copper or a copper alloy) and is conductive. The busbar 30 is arranged along at least a portion of the base plate 11 and is held by the base plate 11. As shown in Figure 3, the busbar 30 includes a first busbar 30A and a second busbar 30B.

[0052] The first busbar 30A has, for example, a first connecting portion 31, at least one or more second connecting portions 32, and at least one or more extension portions 33. The second busbar 30B has an extension portion 33. In this embodiment, each of the first connecting portion 31, the second connecting portion 32, and the extension portion 33 is plate-shaped. That is, each of the first connecting portion 31, the second connecting portion 32, and the extension portion 33 has a flat rectangular cross-sectional shape.

[0053] (First connection point) The first connecting portion 31 is the part that is fixed to the terminal portion 121 together with the second member 201s. The first connecting portion 31 is provided at one end of the bus bar 30. The first connecting portion 31 has an insertion hole 31h through which a bolt 40 is passed.

[0054] Furthermore, the first connecting portion 31 may have a U-shaped notch instead of an insertion hole 31h. This notch causes the first connecting portion 31 to open towards the bolt 40 that is screwed into the terminal portion 121. Having a U-shaped notch makes it easier for the busbar 30 to be fixed to the terminal portion 121 together with the second member 201s.

[0055] (Second connection point) The second connection portion 32 is the portion that is connected to an external device. The second connection portion 32 is provided on the bus bar 30, excluding one end. For example, the first bus bar 30A in this disclosure has two second connection portions 32 (second connection portion 32Aa, second connection portion 32Ab). The second bus bar 30B in this disclosure has one second connection portion 32 (second connection portion 32Ba). The second connection portion 32 has an insertion hole 32h through which a connection terminal 60 passes.

[0056] (extension part) The extension portion 33 is provided between the first connection portion 31 and the second connection portion 32. Furthermore, the extension portion 33 is provided between multiple second connection portions 32. For example, the first busbar 30A in this disclosure has two extension portions 33 (first extension portion 33Aa, second extension portion 33Ab). The second busbar 30B in this disclosure has one extension portion 33 (third extension portion 33Ba). As shown below, for example, the extension portion 33 may extend linearly along a vertical or horizontal direction, or it may be bent in a complex manner.

[0057] The first extension 33Aa includes, for example, a plate portion extending in the Z direction along the vertical direction and a plate portion extending in the X direction along the horizontal direction. The first extension 33Aa connects the second connecting portion 32Aa and the second connecting portion 32Ab. The second extension 33Ab includes, for example, a plate portion extending in the X direction along the vertical direction. The second extension 33Ab connects the second connecting portion 32Ba and the first connecting portion 31. The third extension 33Ba includes, for example, a plate portion extending along the horizontal direction. The third extension 33Ba connects the second connecting portion 32Ba and the first connecting portion 31.

[0058] (Bolt configuration) The bolt 40 can be screwed onto the nut 121n. The bolt 40 electrically connects the electronic component 20 and the busbar 30 by being screwed onto the nut 121n. The shaft of the bolt 40 can be inserted through the insertion hole 201h of the second member 201s and the insertion hole 31h of the busbar 30. As shown in Figure 3, the bolt 40 is fixed to the base plate 11 so that the terminal portion 121, busbar 30, electronic component 20 (second member 201s), and bolt 40 are arranged in the order from the -Z direction to the +Z direction. Note that if the busbar 30 includes a crimping bolt that can be screwed onto the nut 121n, the bolt 40 is not required for fixing at the terminal portion 121.

[0059] Alternatively, a crimping bolt may be passed through the through hole 31h, and the crimping bolt may be integrated with the busbar 30. In this case, the shaft of the crimping bolt will be screwed into the nut 121n. Note that the bolt is not limited to a crimping bolt, and may be a bolt fixed to the busbar 30 by welding or other methods.

[0060] (Connection terminals) The connection terminals 60 are components for electrically connecting the busbar 30 to external equipment. Each fixed terminal 38 is fastened to a corresponding component terminal 39. The connection terminals 60 may be provided on the base plate 11. For example, in this disclosure, the connection terminals 60 are provided on the base plate 11 so as to protrude from the first surface 11a1 in a first direction (e.g., the +Z direction). The connection terminals 60 provided on the base plate 11 protrude through an opening in the intermediate plate 131 to the extent that they do not come into contact with the main cover 132.

[0061] <2. Advantages> In this embodiment, the wiring structure 10 comprises a base member (e.g., a base plate 11) and a terminal block 12. The base member has a first recessed portion 11r that is recessed in a first direction (e.g., the Z direction). The terminal block 12 has a terminal portion 121 that is housed in the first recessed portion 11r and can be electrically connected to an electronic component 20. The wiring structure 10 has an air gap s between the terminal block 12 and the first recessed portion 11r. With this configuration, if a change in shape occurs due to dimensional tolerances in the wiring member (electrical connection member) fixed to the terminal portion 121 together with the electronic component 20, the terminal block 12 can move by the amount of the air gap s provided between the housed terminal block 12 and the first recessed portion 11r. Thus, in this embodiment, a wiring structure that facilitates connection between electronic components and busbars can be provided.

[0062] In the cable routing structure 10 of this disclosure, as defined in "JIS B0613:1976 Tolerance for Center Distance," if the dimensions are indicated on the other side based on one of the insertion holes 31h and 32h, the position of the insertion hole (insertion hole 31h or insertion hole 32h) may change depending on the precision grade. Because the terminal block 12 can move by the amount of the gap s, the cable routing structure 10 is less susceptible to changes in the position of the insertion hole (insertion hole 31h or insertion hole 32h).

[0063] Furthermore, in this embodiment, the terminal block 12 further comprises a main body 120 having a second recess 120r that is recessed in a first direction (for example, the Z direction). The terminal portion 121 is equipped with a nut 121n. The nut 121n is housed in the second recess 120r. With this configuration, the electronic component 20 fixed to the terminal portion 121 is placed on the main body 120. Since the terminal block 12 comprising the main body 120 is a holding member to which the electronic component 20 can be attached, it is not necessary to consider changes in the shape of the wiring member connecting the electronic component 20 and the terminal block 12.

[0064] Furthermore, in this embodiment, the terminal block 12 further comprises a first wall portion 123 and a second wall portion 124 that are erected from the main body portion 120. The second wall portion 124 faces the first wall portion 123, with the electronic components 20 in between. With this configuration, the electronic components 20 can be protected from external impacts when the terminal block 12 moves in accordance with the air gap s.

[0065] Furthermore, in this embodiment, a cover member (e.g., main cover 132) is provided that covers the electronic component 20 and has a projection 132p. The projection 132p contacts at least one of the first wall portion 123 and the second wall portion 124 in a first direction (e.g., the Z direction). With this configuration, when the terminal block 12 moves in accordance with the air gap s, the terminal block 12 is prevented from popping out of the first recess portion 11r.

[0066] Furthermore, in this embodiment, the base member is provided with a locking portion 111 that protrudes toward the terminal block 12. The terminal block 12 further includes a holding portion 122 that maintains the locked state by the locking portion 111. With this configuration, when the terminal block 12 moves in accordance with the gap s, the terminal block 12 is prevented from popping out of the first recess 11r.

[0067] Furthermore, in this embodiment, the wiring structure 10, electronic components 20, and busbars 30 (first busbar 30A, second busbar 30B) are provided. The busbars 30 have a connection portion (for example, a first connection portion 31) that is electrically connected to the electronic components 20. The busbars 30 are fixed to the terminal portion 121 together with the electronic components 20. With this configuration, if a change in shape occurs due to dimensional tolerances in the wiring member (electrical connection member) fixed to the terminal portion 121 together with the electronic components 20, the terminal block 12 can move by the amount of the gap s provided between the housed terminal block 12 and the first recess portion 11r. Thus, in this embodiment, a wiring substrate that facilitates connection between electronic components and busbars can be provided.

[0068] Furthermore, in this embodiment, the electronic component 20 is a fuse having an axis in a direction intersecting the first direction described above. With this configuration, since the electronic component 20 is an item that does not easily become bulky, the terminal block 12 can move easily by the amount of the air gap s.

[0069] <3. Variant> Next, we will describe some variations. Note that, apart from the configurations described below, the configurations in each variation are the same as those in the embodiment.

[0070] (First torture) The main body 120 may have a recess on its first surface 120a1 that is recessed in the direction opposite to the direction facing the electronic component 20 (for example, in the -Z direction). At least a part of the electronic component 20 may be housed in this recess. That is, the electronic component 20 may be fixed to the terminal portion 121 together with the busbar 30 in an inverted state.

[0071] (Second variation) The wiring substrate 1 may be configured without a cover portion 13. Alternatively, it may be configured without either the main cover 132 or the intermediate plate 131.

[0072] (Third variation) The first wall portion 123 and the second wall portion 124 may be positioned so as not to come into contact with the electronic component 20. With such a structure, the first wall portion 123 and the second wall portion 124 function as guides when mounting the electronic component 20.

[0073] (Fourth variation) The busbar 30 may be integrated with the base plate 11, for example, by insert molding.

[0074] Embodiments and variations have been described above. However, the embodiments and variations are not limited to the examples described above. For example, multiple embodiments and variations may be implemented in combination with each other. [Explanation of Symbols]

[0075] 1. Circuit board for cable routing 10 Routing structure 11 Base Plate 110 Plane section 11a1 Front page 11a2 Second side 11r First depression 11r1 Bottom 11r2 Side surface 111 Locking part 111ar arm 111p Protrusion 112 Stepped section 12 Terminal block 120 Main body 120a1 Front page 120a2 Second side 120r Second recess 121 Terminal section 121n nut 122 Holding part 122p protrusion 123 First wall 124 Second wall section 13. Cover section 131 Intermediate plate 132 Main Cover 132p protrusion 132p1 First protrusion 132p2 Second protrusion 132r Third recess 20 Electronic Components 200 Main body 200a First end 200b Second end 201 Connection part 201a First connection section 201b Second connection section 201f First component 201s Second component 201h Through hole 30 Bus Bar 30A First Busbar 30B Second Bus Bar 31 First connection section 31h Through hole 32 Second connection section 32Aa Second connection section 32Ab Second connection section 32Ba Second connection section 32h Through hole 33 Stretching section 33Aa First extension part 33Ab Second extension part 33Ba third extension section 40 volts 60 connection terminals s void

Claims

1. A base member having a first recessed portion that is recessed in the first direction, A terminal block housed in the first recess and having terminals capable of electrically connecting electronic components, Equipped with, A gap is provided between the terminal block and the first recessed portion. Structure for wiring.

2. The terminal block further comprises a main body having a second recess that is recessed in the first direction, The terminal portion is equipped with a nut, The nut is housed in the second recess. The cable routing structure according to claim 1.

3. The terminal block further comprises a first wall portion and a second wall portion that are erected from the main body portion, The second wall portion faces the first wall portion, with the electronic component in between. The cable routing structure according to claim 2.

4. The electronic component is covered by a cover member having a protrusion, The projection contacts at least one of the first wall portion and the second wall portion in the first direction. The cable routing structure according to claim 3.

5. The base member is provided with a locking portion that protrudes toward the terminal block, The terminal block further comprises a holding part that maintains the locked state by the locking part. The cable routing structure according to claim 2 or claim 3.

6. A cable routing structure according to any one of claims 1 to 4, The aforementioned electronic component, A busbar having a connection portion that is electrically connected to the aforementioned electronic component, Equipped with, The busbar is fixed to the terminal portion together with the electronic component. Circuit board for cable routing.

7. The aforementioned electronic component is a fuse having an axis in a direction intersecting the first direction. A wiring substrate according to claim 6.

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