Terminal Block

Abstract

To provide a terminal block capable of preventing an error assembly of a bus bar.SOLUTION: An intermediate terminal block 2 comprises: a base part 20; a fixing part 21a that is arranged on the base part 20, and to which one end of a bus bar 3A is fixed; a pair of separation wall parts 223 erected on the base part 20 while holding the fixing part 21a therebetween, and forming an extension path of the bus bar 3A; a fixing part 21b that is arranged in parallel to the fixing part 21a on the base part 20, and to which the one end of a bus bar 3B is fixed; and the pair of separation wall parts 223 erected on the base part 20 while holding the fixing part 21b therebetween, and forming the extension route of the bus bar 3B. The separation wall part 223 of a wall part 22a includes a region R4 and an error assembly prevention part 224 that prevent an arrangement to the fixing part 21a of the bus bar 3B. The separation wall part 223 of a wall part 22b includes a region R3 that prevents an arrangement to the fixing part 21b of the bus bar 3A.SELECTED DRAWING: Figure 8

Description

[Technical field]

[0001] The present invention relates to a terminal block. [Background technology]

[0002] An electric vehicle such as a hybrid vehicle is equipped with a drive device that includes a rotating electric machine such as an electric motor or a generator, and a control unit that controls the rotating electric machine. The rotating electric machine and the control unit are connected by a connection line called a bus bar (for example, see Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2022-151138 A Summary of the Invention [Problem to be solved by the invention]

[0004] In the drive device described in Patent Document 1, the three bus bars have almost the same shape, but the bus bars may have different shapes to avoid interference with surrounding components. For example, when two types of bus bars with different shapes, such as bus bar A and bus bar B, are used, there is a risk of incorrect assembly, such as assembling bus bar B to a terminal to which bus bar A should be attached. [Means for solving the problem]

[0005] One aspect of the present invention a terminal block supporting one end of each of a first bus bar and a second bus bar arranged in a first direction over the entire length thereof, the first bus bar and the second bus bar each extending in a second direction perpendicular to the first direction, and each having a different curved shape when viewed from a third direction perpendicular to the first and second directions, the terminal block comprising: Base plate and , Be One end of the first bus bar is disposed on the base plate. Department A first fixing portion to which the , No. 1. Clamp the fixed part Nibe It is installed on a base plate. , No. 1 Busbar The first extending along A pair of first partition walls that form an extension path; , Be On the base plate Second1. One end of the second bus bar is arranged in parallel with the fixed portion. Department A second fixing portion to which the , No. 2. Clamp the fixed part Nibe It is installed on a base plate. , No. 2 Busbars The second extending along A pair of second partition walls that form an extension path, an end portion of the first partition portion along the first extension path and an end portion of the second partition portion along the second extension path have different shapes when viewed from a third direction; pair The first At least one of the partition walls is At the end of the first partition, No. 2 busbar The first A first interference region prevents the sensor from being placed on the first fixed portion. The first At least one of the two partitions is At the end of the second partition wall, No. 1 busbar The first The second interference region prevents the sensor from being placed on the second fixed portion. Effect of the Invention

[0006] According to the present invention, it is possible to prevent incorrect assembly of the bus bar. [Brief description of the drawings]

[0007] [Figure 1] FIG. 1 is a diagram showing an overview of a traction motor unit in which the terminal block of this embodiment is used. [Diagram 2] FIG. 2 is an enlarged view of the rectangular dashed area in FIG. [Diagram 3] FIG. 3 is a view taken along the arrow A in FIG. [Figure 4] FIG. 4 is a plan view of the intermediate terminal block. [Diagram 5] FIG. 5 is a view taken along the arrow B in FIG. [Figure 6] FIG. 6 is a view taken along the arrow C in FIG. [Figure 7] FIG. 7 is a diagram illustrating the insulation performance improving function. [Figure 8] FIG. 8 is a diagram illustrating the incorrect assembly prevention function. [Figure 9] FIG. 9 is a diagram illustrating the fall prevention function. [Figure 10] FIG. 10 is a diagram for explaining the positioning function. [Figure 11]FIG. 11 is a diagram illustrating the deposition prevention function. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0008] Hereinafter, the embodiment of the present invention will be described with reference to the drawings. The following description and drawings are examples for explaining the present invention, and appropriate omissions and simplifications have been made for clarity of explanation. In addition, in the following description, the same or similar elements and processes are given the same reference numerals, and duplicate explanations may be omitted. Note that the contents described below are merely examples of the embodiment of the present invention, and the present invention is not limited to the following embodiment, and can be implemented in various other forms.

[0009] 1 is a diagram showing an overview of a traction motor unit 1 in which the terminal block of this embodiment is used. A traction motor 12, a generator 13, a transmission (not shown), etc. are provided inside a transmission case 11 of the traction motor unit 1. A power control unit (PCU) 14 equipped with an inverter, etc. is provided on the upper part of the transmission case 11. The shaft cores of the traction motor 12 and the generator 13 extend in the direction of the y axis.

[0010] FIG. 1 shows a state where the cover on the axial front side of the transmission case 11 is removed, and the traction motor 12, the generator 13, and a terminal block (hereinafter referred to as an intermediate terminal block) 2 are exposed. The intermediate terminal block 2 is a terminal block for connecting a generator feed 131 drawn from the generator stator to a bus bar 3, and a connection terminal of the generator feed 131 and a terminal portion 31 provided at one end of the bus bar 3 are fixed. A terminal portion 32 provided at the other end of the bus bar 3 is connected to a PCU terminal 141. A coolant inlet 111 is provided in the transmission case 11. A three-phase current generated by the generator 13 is input to the PCU 14 via the three bus bars 3. A drip pipe 122 for automatic transmission fluid (ATF) is provided near the stator 121 of the traction motor 12. ATF is dripped from the drip pipe 122 to apply the ATF to the entire stator 121.

[0011] Fig. 2 is an enlarged view of the rectangular dashed line area in Fig. 1. The three bus bars 3 shown in Fig. 1 are composed of a bus bar 3A that is greatly curved midway and two bus bars 3B of the same shape. Bus bar 3A, which extends downward from PCU terminal 141 in the figure, is formed in a shape that is greatly curved midway so as to bypass the portion where stator 121 of traction motor 12 is attached. Therefore, bus bar 3B also has a shape that is bent to the left in the figure near the middle so as not to interfere with curved bus bar 3A.

[0012] The intermediate terminal block 2 is fixed to the vertical surface of the transmission case 11 by two bolts so that the bottom surface of the intermediate terminal block 2 is substantially vertical. The terminal portions 31 of each bus bar 3A, 3B are arranged on the fixing portion 21 of the intermediate terminal block 2 so as to overlap with the connection terminals of the corresponding generator feeds 131, and are fixed to the fixing portion 21 so as to be fastened together by bolts or the like. However, if the coolant introduced from the coolant inlet 111 is mistakenly mixed with the ATF, the ATF mixed with the coolant will enter the terminal block arrangement area in the transmission case 11 from the drip pipe 122.

[0013] Fig. 3 is a view of busbars 3A, 3B and intermediate terminal block 2 shown in Fig. 2 as viewed from the direction A. The terminal block mounting surface of transmission case 11 has a step, and the surface to which intermediate terminal block 2 is fixed and the busbar fixing surface of PCU terminal 141 are at different heights. Stator 121 provided on transmission case 11 is formed so as to protrude towards busbars 3A, 3B. As shown in Fig. 2, busbar 3A is curved so as to avoid stator 121.

[0014] Busbar 3A bends to the right of terminal portion 32 fixed to PCU terminal 141 in the figure, rises to the same height as fixing portion 21 of intermediate terminal block 2, and then extends in the direction of intermediate terminal block 2. Busbar 3B bends to the right of terminal portion 32 in the figure, rises above intermediate terminal block 2 in the figure, and then bends downward again in the figure and is fixed to intermediate terminal block 2. Therefore, although the curved portion of busbar 3A appears to be close to the adjacent busbar 3B in Figure 2, they are sufficiently separated in the y direction as shown in Figure 3.

[0015] 4 to 6 are diagrams for explaining the shape of the intermediate terminal block 2. FIG. 4 is a plan view, FIG. 5 is a view seen from the direction B in FIG. 4, and FIG. 6 is a view seen from the direction C in FIG. 4. The intermediate terminal block 2 is formed by insert molding in which a metal plate is molded with an electrically insulating resin. The intermediate terminal block 2 includes a base portion 20 fixed to an attachment object, a plurality of fixing portions 21a, 21b, and 21c provided on the base portion 20, and wall portions 22a and 22b provided around the fixing portions 21a, 21b, and 21c. The base portion 20 is formed with a through hole 201 for bolting the intermediate terminal block 2 to an attachment object (for example, a transmission case 11).

[0016] Fixed portions 21a, 21b, and 21c are arranged side by side in the x direction, and each include a seating surface 211 to which terminal portions 31 of busbars 3A and 3B are fixed. As shown in Fig. 2, the terminal portion 31 of busbar 3A is fixed to the seating surface 211 of fixed portion 21a on the right side, and the terminal portions 31 of busbars 3B are fixed to the seating surfaces 211 of two fixed portions 21b and 21c provided on the left side thereof.

[0017] Walls 22a and 22b are provided so as to protrude from base portion 20, with wall 22a formed so as to surround fixed portion 21a at the right end in the figure, and wall 22b formed so as to surround fixed portion 21c at the left end in the figure. Guide portions 220 for guiding busbars 3A and 3B to fixed portions 21a to 21c are provided on the inner peripheral surface and outer peripheral surface of wall portions 22a and 22b. In addition, misassembly prevention portion 224 for preventing busbar 3B from being erroneously assembled to fixed portion 21a is provided on the inner peripheral surface of wall portion 22a. Note that guide portion 220 and misassembly prevention portion 224 will be described later.

[0018] An outlet 221 is provided in the illustrated upper region of the wall portions 22a and 22b for pulling out the bus bars 3A and 3B fixed to the fixing portions 21a and 21c upward. Meanwhile, an outlet 222 is provided in the illustrated lower region of the wall portions 22a and 22b for pulling out the generator feed 131 fixed to the fixing portions 21a and 21c downward. These outlets 221 and 222 are formed by cutting out parts of the wall portions 22a and 22b. Therefore, the wall height of the outlets 221 and 222 is lower than the height of the other regions of the wall portions 22a and 22b.

[0019] The height of outlet 221 is set to be substantially the same as the height of fixed portion 21a (see FIG. 6), and the wall of outlet 221 functions as a support for supporting extension portion 33 (illustrated) of busbar 3A. Busbar 3A arranged on fixed portion 21a comes into contact with both fixed portion 21a and outlet 221, improving the stability of holding busbar 3A during the assembly work.

[0020] In Fig. 4, the hatched areas of the walls 22a and 22b indicate the top surfaces of the parts where the wall height is the highest. In this embodiment, the hatched parts of the walls 22a and 22b are referred to as partition walls 223. There are four partition walls 223 along the x direction. Each of the fixing parts 21a, 21b, and 21c is disposed in an area sandwiched between a pair of adjacent partition walls 223 among the four partition walls 223.

[0021] Partition walls 223 arranged on both sides of fixed portion 21a form a groove-shaped path (hereinafter referred to as an extension path) for busbar 3A fixed to fixed portion 21a. Partition walls 223 arranged on both sides of fixed portion 21b form an extension path for busbar 3B fixed to fixed portion 21b. Partition walls 223 arranged on both sides of fixed portion 21c form an extension path for busbar 3B fixed to fixed portion 21c.

[0022] Next, the function of the walls 22a and 22b will be described. (First function: Improved insulation performance) First, the partition wall 223 of the wall portions 22a and 22b functions as an insulating protective wall for the bus bars 3A and 3B and the generator feed 131 fixed to the fixing portions 21a to 21c. FIG. 7 is a view equivalent to the DD cross section of FIG. 4, and is a view for explaining the creeping discharge suppression function. Creeping discharge is a discharge phenomenon in which a current flows along the surface of an insulator. Although not shown in FIG. 4, the bus bars 3A and 3B are fixed to the fixing portions 21a and 21b made of an insulator, as shown in FIG. 7.

[0023] In the case of the configuration shown in FIG. 7, there is a possibility of creeping discharge between the busbars 3A and 3B and between the busbar 3A and the stator 121. However, in the intermediate terminal block 2, the bulkhead 223 having a large height is disposed between them. That is, the protruding height of the bulkhead 223 from the base plate 20 is set to be higher than the height of the busbars 3A and 3B fixed to the fixing parts 21a, 21b, and 21c. Therefore, the current of the creeping discharge flows through a path as shown by the dashed arrows L1 and L2. The length of the path shown by the dashed arrows L1 and L2 represents the insulation distance in the creeping discharge, and by providing the bulkhead 223, the insulation distance can be expanded several times compared to the case where the bulkhead 223 is not provided. As a result, the occurrence of the creeping discharge can be suppressed.

[0024] (Second function: Prevention of incorrect assembly) The second function of the walls 22a and 22b is to prevent the busbars 3A and 3B from being assembled incorrectly. FIG. 8 is a diagram for explaining the function of preventing the busbars 3A and 3B from being assembled incorrectly in the intermediate terminal block 2. As described above, the inner peripheral surface of the wall 22a surrounding the fixed portion 21a is provided with the misassembly prevention portion 224. As shown in FIG. 2, the busbar 3A is fixed to the fixed portion 21a, and the busbar 3B is fixed to the fixed portions 21b and 21c. As shown in FIGS. 2 and 3, the busbars 3A and 3B have different shapes. The busbar 3A is curved significantly to the left in FIG. 3 to avoid interference with the stator 121. In addition, the terminal portion 31 of the busbar 3B is provided with a protrusion 311 for preventing misassembly.

[0025] 8, if an attempt is made to erroneously assemble busbar 3A to fixed portion 21b, the curved portion of busbar 3A will interfere with partition wall 223 of wall portion 22b in the region marked with reference symbol R3. The same applies when an attempt is made to assemble busbar 3A to fixed portion 21c, and the curved portion of busbar 3A will interfere with partition wall 223 (region marked with reference symbol R3) on the left side of wall portion 22b in the drawing. As a result, terminal portions 31 of busbar 3A cannot be positioned on seat surfaces 211 of fixed portions 21b, 21c, and erroneous assembly of busbar 3A to fixed portions 21b, 21c can be prevented.

[0026] Furthermore, when attempting to assemble busbar 3B to fixed portion 21a as indicated by the two-dot chain line, protrusions 311 formed on terminal portion 31 of busbar 3b interfere with misassembly prevention portion 224 formed on the inner circumferential surface of wall portion 22a. Moreover, because busbar 3B is not curved as greatly as busbar 3A, it interferes with partition portion 223 of wall portion 22a in the region indicated by reference symbol R4. As a result, terminal portion 31 of busbar 3B cannot be positioned on seat surface 211 of fixed portion 21a, and misassembly of busbar 3B to fixed portion 21a can be prevented.

[0027] (Third function: Anti-drop function) The third function of the walls 22a and 22b is to prevent the busbars 3A and 3B from falling during the assembly work. FIG. 9 is a diagram for explaining the fall prevention function of the intermediate terminal block 2. As shown in FIG. 1, the up-down direction in the traction motor unit 1 corresponds to the top-to-bottom direction. Then, the intermediate terminal block 2 is fixed to the transmission case 11 in the arrangement posture shown in FIGS. 1 and 2, and then the installation work of the busbars 3A and 3B is performed. In this case, since the busbars 3A and 3B are arranged in a posture in which the extension direction corresponds to the top-to-bottom direction, there is a possibility that the busbars 3A and 3B may fall during the installation work, and the fixing work may be time-consuming. In addition, in the case of a work process in which the busbars 3A and 3B are temporarily placed on the intermediate terminal block 2 and screwed in the next process, there is a possibility that the busbars 3A and 3B may fall from the intermediate terminal block 2 on which they are temporarily placed, when the traction motor unit 1 is moved to the next process.

[0028] 9 shows how the temporarily placed busbars 3A and 3B are prevented from falling. The busbar 3A fixed to the fixing portion 21a has an extension portion 33 that curves and extends vertically upward from the terminal portion 31. The pair of partition portions 223 of the wall portion 22a form an extension path through which the extension portion 33 of the busbar 3A passes. The extension path through which the extension portion 33 passes includes the vertically upward side of the partition portion 223 on the left side of the wall portion 22a in the figure. Therefore, when the busbar 3A temporarily placed on the fixing portion 21a is displaced downward in the figure, the extension portion 33 abuts against the partition portion 223 in the region indicated by the symbol R5. As a result, the displaced busbar 3A is held in the state shown in FIG. 9 by the partition portion 223, and is prevented from falling.

[0029] Further, the inner circumferential surface of the partition wall portion 223 of the wall portion 22b protrudes downward in the vertical direction of the fixed portion 21c (i.e., to the left in the figure) in the region indicated by reference symbol R7. Therefore, when the busbar 3B is displaced downward from the fixed portion 21c in the figure, the terminal portion 31 of the busbar 3B abuts against the inner circumferential surface of the partition wall portion 223 in the region indicated by reference symbol R7. As a result, the displaced busbar 3B is held in the state shown in FIG. 9 and is prevented from falling. The same is true for the busbar 3B fixed to the fixed portion 21b, and the terminal portion 31 abuts against the outer circumferential surface of the partition wall portion 223 (the surface on the fixed portion 21b side) in the region indicated by reference symbol R6, and is therefore prevented from falling. Note that the terminal portion 31 of the busbar 3B has a protrusion 311 formed thereon, so that the amount of misalignment of the busbar 3B until it abuts against the partition wall portion 223 can be kept small.

[0030] (Fourth function: Positioning function) FIG. 10 is a diagram for explaining the fourth function of the walls 22a and 22b, that is, the positioning function for the busbars 3A and 3B. FIG. 10 is a diagram corresponding to the EE cross section of FIG. 4. FIG. 10 shows the positioning of the busbar 3B fixed to the fixed portion 21b. As shown in FIG. 4, the inner and outer circumferential surfaces of the walls 22a and 22b are provided with the guide portions 220 for guiding the busbars 3A and 3B to the fixed portions 21a to 21c. The guide portions 220 provided on both sides of the fixed portion 21b are formed with inclined surfaces that slope downward toward the fixed portion 21b. The guide portions 220 provided on both sides of the fixed portions 21a and 21c shown in FIG. 4 are also formed with inclined surfaces that slope downward toward the fixed portions 21a and 21c, respectively.

[0031] 10, the two-dot chain lines indicate busbar 3B in the middle of being placed on fixed portion 21b. When busbar 3B comes into contact with guiding portion (inclined surface) 220 on the left side of the figure, it is guided toward the center of fixed portion 21b by guiding portion 220, which is an inclined surface, as indicated by solid line arrow L3. Then, when guided to the center, busbar 3B moves downward in the figure as indicated by solid line arrow L4, and is placed at the center position on fixed portion 21b. The connection terminal of generator feed 131 fixed to fixed portion 21b is also guided to the center of fixed portion 21b by guiding portion 220, in the same manner as busbar 3B.

[0032] FIG. 10 shows the positioning operation (guiding operation) when busbar 3B is misaligned to the left, but when busbar 3B is misaligned to the right, busbar 3B is guided diagonally downward to the left by guiding portion 220 on the right side. The guiding portions 220 of each of fixed portions 21a, 21c function in the same manner as the guiding portions 220 on both sides of fixed portion 21b. Note that, although guiding portions 220 are provided on both sides of each of fixed portions 21a to 21c in the embodiment, guiding portion 220 may be provided on only one side. In that case, when arranging busbars 3A, 3B, the guiding function of guiding portion 220 can be utilized by arranging busbars 3A, 3B using guiding portion 220 as a guide.

[0033] (5th function: Anti-accumulation function) Fig. 11 is a diagram illustrating the fifth function of the walls 22a and 22b, which is the function of preventing accumulation of coolant. The coolant that has entered the terminal arrangement area flows from top to bottom in the vertical direction as indicated by the arrow F in Fig. 11. If the coolant accumulates in the intermediate terminal block 2 and accumulates, particularly in the area close to the bus bars 3A and 3B, it is likely to cause a decrease in insulation. Therefore, the wall surfaces indicated by the thick lines in Fig. 11 (the vertically upper wall surfaces of the walls 22a and 22b) are inclined obliquely with respect to the horizontal to reduce the accumulation of coolant.

[0034] Specifically, the wall surfaces of the partition wall 223 are the wall surfaces of the regions R3 and R4 for preventing the bus bars 3A and 3B from being misassembled, the wall surfaces of the regions R5, R6, and R7 for preventing the bus bars 3A and 3B from falling, the wall surface of the guide portion 220 for guiding the bus bars 3A and 3B to the fixing portions 21a, 21b, and 21c, and the wall surface of the outlet 221 of the wall portion 22a which functions as a support portion. These wall surfaces are the upper wall surfaces in the vertical direction, and by making each wall surface an inclined surface inclined obliquely with respect to the horizontal, accumulation (retention) of the coolant liquid is suppressed. Note that the wall surface of the misassembly prevention portion 224 provided on the inner peripheral surface of the wall portion 22a may also be configured as an inclined surface (a surface inclined downward to the left) on the upper wall surface in the vertical direction.

[0035] The various embodiments and modifications described above are merely examples, and the present invention is not limited to these as long as they do not impair the characteristics of the invention. Other aspects conceivable within the scope of the technical idea of ​​the present invention are also included in the scope of the present invention. For example, in the above-mentioned embodiment, the terminal block used in the traction motor unit 1 has been described as an example, but the present invention can also be applied to terminal blocks used in other devices. In addition, the terminal block (intermediate terminal block 2) may be arranged so that the base portion 20 is vertical as described above, or may be arranged so that the base portion 20 is horizontal. [Explanation of symbols]

[0036] 1...traction motor unit, 2...intermediate terminal block (terminal block), 3, 3A, 3B...bus bar, 20...base portion, 21, 21a, 21b, 21c...fixing portion, 22a, 22b...wall portion, 31, 32...terminal portion, 33...extension portion, 131...generator feed, 220...guiding portion, 221, 222...drawing outlet, 223...partition portion, 224...misassembly prevention portion, 311...projection

Claims

1. A terminal block supporting one end of each of a first bus bar and a second bus bar arranged in a first direction along the entire length thereof, the first bus bar and the second bus bar each extend in a second direction perpendicular to the first direction, and have different curved shapes when viewed from a third direction perpendicular to the first direction and the second direction; The terminal block includes: A base plate; a first fixing portion disposed on the base plate, to which the one end of the first bus bar is fixed; a pair of first partition walls that are erected on the base plate to sandwich the first fixed portion and form a first extension path that extends along the first bus bar; a second fixing portion disposed on the base plate in parallel with the first fixing portion, the second bus bar being fixed to the first end of the second bus bar; a pair of second partition walls that are erected on the base plate to sandwich the second fixed portion and form a second extension path that extends along the second bus bar, an end portion of the first partition portion along the first extension path and an end portion of the second partition portion along the second extension path have different shapes when viewed from the third direction; at least one of the pair of first partition portions has a first interference region at the end portion of the first partition portion, the first interference region preventing the second bus bar from being disposed on the first fixed portion; A terminal block characterized in that at least one of the pair of second partition portions has a second interference region at the end of the second partition portion that prevents the first bus bar from being placed on the second fixed portion.

2. 2. The terminal block according to claim 1, the first and second partitions are formed of an electrically insulating material; the first partition portion is disposed apart from the first bus bar fixed to the first fixing portion, and a protruding height from the base plate is greater than a height of the first bus bar fixed to the first fixing portion; The second partition portion is positioned at a distance from the second bus bar fixed to the second fixed portion, and the protruding height from the base plate is greater than the height of the second bus bar fixed to the second fixed portion.

3. 2. The terminal block according to claim 1, a first guide protrusion is provided on a surface of the first partition portion facing the fixed portion, the first bus bar abutting against the first guide protrusion to guide the first bus bar to a predetermined fixed position of the first fixed portion, A terminal block characterized in that a second guide protrusion is provided on the fixed portion facing surface of the second partition portion, against which the second bus bar abuts and which guides the second bus bar to a predetermined fixed position of the second fixed portion.

4. 2. The terminal block according to claim 1, the terminal block is installed such that a juxtaposition direction of the first and second fixing portions is a horizontal direction and an extension direction of the first and second partition portions is a vertical direction; the first extension path of the first bus bar formed by the pair of first partition walls includes a position vertically above one of the pair of first partition walls, The terminal block, wherein the second partition portion has a second wall surface that protrudes vertically downward from the second fixing portion.

5. 2. The terminal block according to claim 1, The terminal block, characterized in that the first partition portion has a support portion that supports the first bus bar arranged on the first fixed portion in the first extension path.

6. The terminal block according to any one of claims 2 to 5, the terminal block is installed such that a juxtaposition direction of the first and second fixing portions is a horizontal direction and an extension direction of the first and second partition portions is a vertical direction; A terminal block, characterized in that a vertically upper wall surface of the first partition portion of the first interference region is inclined obliquely with respect to the horizontal.

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