JP2023085109A - Incorrect insertion detection structure of relay terminal - Google Patents

Abstract

To provide an incorrect insertion detection structure of a relay terminal which can easily discriminate incorrect assembly when a relay terminal is erroneously assembled.SOLUTION: An incorrect insertion detection structure of a relay terminal includes: a bus bar 20 which is inserted into a first insertion space 12 of a relay terminal 10 having a first insertion space 12 and a second insertion space 14 for inserting a plate-like terminal 23 and a tab terminal 51 from mutually different directions; and a lower cover 30 having a terminal receiving part 33 for positioning a loading position of the relay terminal 10. The bus bar 20 has an engagement projection 37 for blocking enter of the plate-like terminal 23 of the bus bar 20 by interfering with a lower end face 16 of the relay terminal 10 in an insertion direction of the plate-like terminal 23, when the plate-like terminal 23 of the bus bar 20 is erroneously inserted into the second insertion space 14, or the plate-like terminal 23 of the bus bar 20 is erroneously inserted into the first insertion space 12 in opposite directions with respect to the front/rear direction.SELECTED DRAWING: Figure 4

Description

The present invention relates to an erroneous insertion detection structure for a relay terminal.

FIG. 11 shows one form of a conventional connection structure between a bus bar and a relay terminal.
The relay terminal 10 is for interconnecting the tab terminal (plate-like terminal portion) 81 of the relay 80 and the tab terminal (plate-like terminal portion) 71 of the bus bar 70 in the electrical connection box. The relay terminal 10 integrally has an elastic contact piece (spring portion) 17 inside a rectangular tubular portion (tubular portion) 15 having a pair of opposed walls 11 and 13 . The elastic contact piece 17 has a short side portion 19 that is folded back toward the distal end side of the long side portion 18 .

Then, the tab terminal 71 of the bus bar 70 is inserted into the first insertion space 12 defined between the short side portion 19 and the opposing wall 11 on one side, and the tab terminal 71 is inserted between the long side portion 18 and the opposing wall 13 on the other side. A tab terminal 81 of the relay 80 is inserted into the defined second insertion space 14 . As a result, tab terminal 71 of bus bar 70 and tab terminal 81 of relay 80 are connected to each other via elastic contact piece 17 .

Japanese Patent Application Laid-Open No. 2006-40704

By the way, in the above-described conventional connection structure between the bus bar and the relay terminal, when the relay terminal 10 is used in the electric connection box, the bus bar 70 is arranged in advance on the substrate of the electric connection box, and the relay terminal 10 is connected to the bus bar 70 . is attached to the tab terminal 71 of the At this time, the relay terminal 10 may be erroneously inserted into the first insertion space 12 with the tab terminal 71 of the busbar 70 reversed in the front-rear direction as shown in FIG. may be erroneously inserted into the second insertion space 14 .

When the relay terminal 10 is assembled in an improper state in this way, it is difficult to visually distinguish it, and there is a possibility that the relay terminal 10 is overlooked. In addition, the tab terminal 81 of the relay 80 cannot be properly inserted into the relay terminal 10 that has been incorrectly assembled to the tab terminal 71 of the bus bar 70, and the tab terminal 81 of the relay 80 and the elastic contact in the relay terminal 10 are prevented. There is a possibility that the piece 17 is pushed hard and deformed or scratched.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an erroneous insertion detection structure for a relay terminal that can easily determine erroneous assembly when the relay terminal is erroneously assembled. to provide.

In order to achieve the above object, the erroneous insertion detection structure of the relay terminal according to the present invention is characterized as follows.
a bus bar inserted into the first insertion space of the relay terminal having a first insertion space and a second insertion space for inserting the plate-like terminal portion from mutually different directions;
a housing having a terminal receiving portion for positioning the mounting position of the relay terminal;
When the plate-like terminal portion of the bus bar is erroneously inserted into the second insertion space, or when the plate-like terminal portion of the bus bar is erroneously inserted into the first insertion space in the opposite direction, having a locking protrusion that interferes with the lower end surface of the relay terminal along the insertion direction of the plate-like terminal of the bus bar to prevent entry of the relay terminal,
Erroneous insertion detection structure of the relay terminal.

According to the erroneous insertion detection structure of the relay terminal according to the present invention, it is possible to easily determine the erroneous assembly when the relay terminal is erroneously assembled.

The present invention has been briefly described above. Furthermore, the details of the present invention will be further clarified by reading the following detailed description of the invention (hereinafter referred to as "embodiment") with reference to the accompanying drawings. .

FIG. 1 is an exploded perspective view of essential parts showing an electrical connection box provided with an erroneous insertion detection structure for relay terminals according to a first embodiment of the present invention. FIG. 2 is a perspective view of a main part showing a relay terminal assembled to a bus bar arranged in the housing of the electrical connection box shown in FIG. 1; FIG. 3 is an enlarged perspective view showing the busbar and the relay terminal shown in FIG. 2. FIG. 4 is a longitudinal sectional view showing a relay terminal in which the bus bar shown in FIG. 3 is normally assembled in the first insertion space; FIG. FIG. 5 is an enlarged perspective view showing a relay terminal in which the bus bar shown in FIG. 3 is erroneously inserted into the first insertion space in the front-rear direction. 6 is a cross-sectional view taken along the line VI-VI of FIG. 5. FIG. 7 is an enlarged perspective view showing a relay terminal in which the bus bar shown in FIG. 3 is erroneously inserted into the second insertion space; FIG. 8 is a cross-sectional view taken along line VIII-VIII of FIG. 7. FIG. FIG. 9 is an enlarged perspective view showing a bus bar and a relay terminal provided with a relay terminal mis-insertion detection structure according to a second embodiment of the present invention. 10 is a longitudinal sectional view showing a relay terminal in which the bus bar shown in FIG. 9 is normally assembled in the first insertion space; FIG. FIG. 11 is a longitudinal sectional view showing one form of a conventional connection structure between a bus bar and a relay terminal. 12 is a longitudinal sectional view showing a relay terminal in which the bus bar shown in FIG. 11 is erroneously inserted into the first insertion space in the front-rear direction. 13 is a longitudinal sectional view showing a relay terminal in which the bus bar shown in FIG. 11 is erroneously inserted into the second insertion space; FIG.

Specific embodiments relating to the present invention will be described below with reference to each drawing.
FIG. 1 is an exploded perspective view of the essential parts of an electrical connection box 100 having a relay terminal mis-insertion detection structure according to a first embodiment of the present invention, and FIG. FIG. 3 is a perspective view of a main part showing a relay terminal 10 to be attached to the arranged busbar 20;

As shown in FIG. 1, an electrical connection box 100 according to the present embodiment is mounted on a vehicle, for example, and includes a lower cover (housing) 30 and an upper cover 40, which are a connection box main body made of synthetic resin, and an upper cover 40. It includes electric parts 50 such as mounted relays and fuses, a plurality of busbars 20 arranged on a busbar mounting surface 31 on the bottom wall of the lower cover 30, and a plurality of relay terminals 10. As shown in FIG.

Predetermined busbars 20 are arranged on the busbar mounting surface 31 of the lower cover 30 , the upper cover 40 is mounted thereon, and the electrical components 50 are mounted in the sockets 41 of the upper cover 40 .

3 is an enlarged perspective view showing the busbar 20 and the relay terminal 10 shown in FIG. 2, and FIG. 4 is a longitudinal sectional view showing the relay terminal 10 with the busbar 20 shown in FIG. 3 normally assembled in the first insertion space 12. is.
The relay terminal 10 is the same as that shown in the conventional example (FIG. 11), and connects the tab terminal (plate-like terminal portion) 51 of the electric component 50 and the plate-like terminal portion 23 of the bus bar 20 in the electrical junction box 100. It is for connecting to

As shown in FIGS. 3 and 4, the relay terminal 10 integrally has a spring portion (elastic contact piece) 17 inside a rectangular cylindrical portion 15 having a pair of opposed walls 11 and 13 . The spring portion 17 has a short side portion 19 that is folded back toward the distal end side of the long side portion 18 .

Then, the plate-like terminal portion 23 of the bus bar 20 is inserted into the first insertion space 12 defined between the short side portion 19 and the one opposing wall 11 , and the long side portion 18 and the other opposing wall 13 are separated from each other. A tab terminal 51 of the electrical component 50 is inserted into the second insertion space 14 defined therebetween. That is, the relay terminal 10 has a first insertion space 12 and a second insertion space 14 for inserting the plate-like terminal portion 23 and the tab terminal 51 from mutually different directions. Accordingly, the plate-like terminal portion 23 of the busbar 20 and the tab terminal 51 of the electrical component 50 are connected to each other via the spring portion 17 .

As shown in FIGS. 1 and 2, the busbar mounting surface 31 of the lower cover 30 as a housing has terminal receiving portions 33 corresponding to the plate-like terminal portions 23 of the busbars 20 disposed on the busbar mounting surface 31 . is provided.
The terminal receiving portion 33 is for positioning the mounting position of the relay terminal 10 mounted on the plate-like terminal portion 23 of the busbar 20 with respect to the busbar mounting surface 31 , and intersects the busbar mounting surface 31 of the lower cover 30 . It has an upright wall portion 35 erected upward (that is, in a direction orthogonal to the busbar mounting surface 31).

The standing wall portion 35 is a rectangular cylindrical pedestal vertically provided on the bus bar mounting surface 31 . As shown in FIG. 2, one side surface 35b of the standing wall portion 35 is close to and faces the protruding corner side plate surface 23a of the plate-like terminal portion 23 formed by bending the end portion of the mounting portion 21. As shown in FIG.

As shown in FIG. 4, when the relay terminal 10 is normally inserted into the plate-like terminal portion 23, the upper end surface 35a of the standing wall portion 35 abuts against the lower end surface 16 of the relay terminal 10, thereby facilitating assembly of the relay terminal 10. Regulate height.

The bus bar 20 is formed by punching a conductive metal plate into an appropriate shape and bending the plate to form the circuit of the electric junction box 100 , thereby forming a mounting portion 21 mounted on a bus bar mounting surface 31 and a mounting portion 21 mounted on the bus bar mounting surface 31 . A plate-like terminal portion 23 extending in a direction crossing from the portion 21 (in this embodiment, an upward direction orthogonal to the mounting portion 21) is formed.

Furthermore, the busbar 20 is not fixed when the plate-like terminal portion 23 of the busbar 20 is erroneously inserted into the second insertion space 14 or when the plate-like terminal portion 23 of the busbar 20 is erroneously inserted into the first insertion space 12 in the opposite direction. In this case, it has a locking protrusion 37 that interferes with the lower end surface 16 of the relay terminal 10 along the insertion direction of the plate-like terminal portion 23 to prevent it from entering.

The locking protrusion 37 in the first embodiment is formed by a protrusion protruding from the protruding corner side plate surface 23 a of the plate-like terminal portion 23 bent at the end portion of the mounting portion 21 . As shown in FIG. 4 , the locking protrusion 37 is provided at a position higher than the height of the upper end surface 35 a of the standing wall portion 35 in the plate-like terminal portion 23 .

When the plate-like terminal portion 23 of the busbar 20 is erroneously inserted into the second insertion space 14 (see FIG. 8), the plate-like terminal portion 23a of the busbar 20 is elastically biased by the long side portion 18 of the spring portion 17, and the plate surface 23a on the outside corner side faces the other side. It is slid along the inner surface of the opposing wall 13 . Since the lower end face 16 of the other opposing wall 13 contacts the upper end of the engaging projection 37, the relay terminal 10 is reliably prevented from entering.

Further, when the plate-like terminal portion 23 of the busbar 20 is erroneously inserted into the first insertion space 12 in the front-back direction (see FIG. 6), the plate-like terminal portion 23 is elastically biased by the short side portion 19 of the spring portion 17 to The side plate surface 23 a is slid along the inner surface of one opposing wall 11 . Since the lower end surface 16 of one opposing wall 11 contacts the upper end of the engaging projection 37, the relay terminal 10 is reliably prevented from entering.

When the plate-like terminal portion 23 of the busbar 20 is normally inserted into the first insertion space 12 (see FIG. 4), the inside corner side plate surface 23b is pushed to one side while being elastically biased by the short side portion 19 of the spring portion 17. is slid along the inner surface of the opposing wall 11 of the . At this time, since the engaging projection 37 is positioned inside the relay terminal 10, the lower end surface 16 of one opposing wall 11 abuts against the upper end of the engaging projection 37 to prevent the entry of the relay terminal 10. never do.

Next, an example of a method for assembling the electrical connection box 100 will be described.
First, as shown in FIGS. 1 and 2, predetermined busbars 20 are arranged on the busbar mounting surfaces 31 of the lower cover 30, respectively. The busbar 20 with the mounting portion 21 mounted on the busbar mounting surface 31 is arranged in the vicinity of the terminal receiving portion 33 to which the plate-like terminal portion 23 corresponds. A protruding corner side plate surface 23 a of the plate-like terminal portion 23 faces one side surface 35 b of the standing wall portion 35 .

Next, as shown in FIGS. 2 and 3, the relay terminal 10 is attached to the plate-like terminal portion 23 of the busbar 20 from above. At this time, when the relay terminal 10 is normally inserted, as shown in FIG. inserted into the space 12; The lower end surface 16 of the relay terminal 10 attached to the plate-like terminal portion 23 is in contact with the upper end surface 35a of the vertical wall portion 35 of the terminal receiving portion 33, thereby restricting the assembly height.
At this time, since the locking protrusion 37 of the plate-like terminal portion 23 is positioned inside the relay terminal 10 , the lower end surface 16 of one opposing wall 11 contacts the upper end of the locking protrusion 37 . The entry of the relay terminal 10 is not blocked.

5 is an enlarged perspective view showing the relay terminal 10 in which the busbar 20 shown in FIG. 3 is erroneously inserted into the first insertion space 12 in the front-rear reverse direction, and FIG. 6 is a cross-sectional view taken along line VI-VI in FIG. 7 is an enlarged perspective view showing the relay terminal 10 in which the bus bar 20 shown in FIG. 3 is erroneously inserted into the second insertion space 14, and FIG. 8 is a cross-sectional view taken along line VIII-VIII of FIG.

As shown in FIGS. 5 and 6 , when the relay terminal 10 is attached to the plate-like terminal portion 23 of the busbar 20 from above, the protruding corner side plate surface 23 a faces the one opposing wall 11 of the cylindrical portion 15 . When the plate-like terminal portion 23 is erroneously inserted into the first insertion space 12 of the relay terminal 10 in the front-to-back direction, the lower end surface 16 of one of the opposing walls 11 of the plate-like terminal portion 23 is inserted into the first insertion space 12 of the relay terminal 10 . , and entry is blocked.

Therefore, the relay terminal 10 erroneously inserted into the plate-like terminal portion 23 in the front-to-rear reverse direction interferes with the locking protrusion 37 of the plate-like terminal portion 23 at the lower end surface 16 of one of the opposed walls 11 and is prevented from entering. Since this is blocked, the lower end surface 16 does not reach the upper end surface 35 a of the standing wall portion 35 of the terminal receiving portion 33 . Therefore, the relay terminal 10 erroneously inserted in the reverse direction projects upward from the mounting position (see FIGS. 3 and 4) at the time of normal insertion, and the operator can notice the abnormality.

7 and 8, when the relay terminal 10 is attached to the plate-like terminal portion 23 of the busbar 20 from above, the plate-like terminal portion 23 is erroneously inserted into the second insertion space 14 of the relay terminal 10. The lower end surface 16 of the opposite wall 13 contacts the locking projection 37 of the plate-like terminal portion 23 to prevent the relay terminal 10 from entering.

Therefore, the relay terminal 10 whose plate-like terminal portion 23 has been erroneously inserted into the second insertion space 14 interferes with the locking protrusion 37 of the plate-like terminal portion 23 at the lower end surface 16 of the other opposing wall 13 and cannot enter. Since this is blocked, the lower end surface 16 does not reach the upper end surface 35 a of the standing wall portion 35 of the terminal receiving portion 33 . Therefore, the relay terminal 10 whose plate-like terminal portion 23 is erroneously inserted into the second insertion space 14 projects upward from the mounting position (see FIGS. 3 and 4) at the time of normal insertion. Abnormalities can be noticed.

Therefore, when the relay terminal 10 is attached to the plate-shaped terminal portion 23 of the bus bar 20 from above, the worker can easily identify the improper assembly of the relay terminal 10 . Therefore, the operator can remove the incorrectly inserted relay terminal 10 and quickly reattach it in the normal direction.

After all the relay terminals 10 are attached to the plate-like terminal portions 23 of the busbars 20 in a normal state, the upper cover 40 is attached from above the lower cover 30 . Then, the relay terminal 10 attached to the plate-like terminal portion 23 is accommodated in the terminal accommodating portion provided inside the socket 41 of the upper cover 40 .

Furthermore, when the electrical component 50 is attached to the socket 41, the tab terminal 51 passing through the slit 43 of the upper cover 40 is inserted into the second insertion space 14 of the relay terminal 10 (see FIG. 4). Therefore, the tab terminal 51 of the electrical component 50 is electrically connected to the plate-like terminal portion 23 of the busbar 20 via the relay terminal 10 .

As described above, according to the relay terminal erroneous insertion detection structure according to the first embodiment, when the relay terminal 10 is erroneously assembled, the erroneous assembly can be easily determined. . As a result, erroneous assembly of the relay terminal 10 can be prevented, and the electric connection box 100 can be easily assembled.
Further, according to the erroneous insertion detection structure of the relay terminal according to the first embodiment, by preventing erroneous assembly of the relay terminal 10 , the relay terminal 10 which is erroneously assembled to the plate-shaped terminal portion 23 of the bus bar 20 can be detected. However, it can be prevented from being forcibly inserted into the terminal accommodating portion of the upper cover 40 and causing deformation, damage, or the like.

FIG. 9 is an enlarged perspective view showing a bus bar 20A and a relay terminal 10 having a relay terminal mis-insertion detection structure according to a second embodiment of the present invention, and FIG. 1 is a vertical cross-sectional view showing a relay terminal 10 normally assembled to the . Note that the busbar 20A according to the second embodiment has the same configuration as the busbar 20 of the first embodiment except that the locking protrusion 38 is used, so the same constituent members are denoted by the same reference numerals. detailed description is omitted.

As shown in FIG. 9, a busbar 20A according to the second embodiment includes locking projections 38 instead of the locking projections 37 according to the first embodiment.
The locking protrusion 38 in the second embodiment is formed by a cut-and-raised piece projecting from the protruding corner side plate surface 23 a of the plate-like terminal portion 23 bent at the end portion of the mounting portion 21 . As shown in FIG. 10 , the locking protrusion 38 is provided at a position higher than the height of the upper end surface 35 a of the standing wall portion 35 in the plate-like terminal portion 23 .

Similar to the locking projection 37 in the first embodiment, the locking projection 38 according to the second embodiment is designed to Alternatively, if the plate-like terminal portion 23 of the busbar 20A is erroneously inserted into the first insertion space 12 in the opposite direction, it interferes with the lower end surface 16 of the relay terminal 10 along the insertion direction of the plate-like terminal portion 23 and prevents entry. can be prevented.

Therefore, when the relay terminal 10 is attached to the plate-shaped terminal portion 23 of the bus bar 20A from above, the operator can easily identify the improper assembly of the relay terminal 10. FIG. Therefore, the operator can remove the incorrectly inserted relay terminal 10 and quickly reattach it in the normal direction.

It should be noted that the present invention is not limited to the above-described embodiments, and can be modified, improved, etc. as appropriate. In addition, the material, shape, size, number, location, etc. of each component in the above-described embodiment are arbitrary and not limited as long as the present invention can be achieved.

For example, in the above-described embodiment, the tab terminal 51 of the electrical component 50 is used as the plate-shaped terminal portion to be inserted into the second insertion space 14 of the relay terminal 10, but the bus bar is not limited to this. It can also be a plate-shaped terminal portion of an upper layer bus bar laminated on the upper layer bus bar.

Further, in the above-described embodiment, the operator can notice an abnormality by visually checking that the erroneously inserted relay terminal 10 protrudes upward from the mounting position at the time of normal insertion. It is also possible to detect the height difference of the relay terminal 10 between the inserted state and the erroneously inserted state by an optical sensor, a contact sensor, or the like.

Here, the features of the embodiment of the erroneous insertion detection structure of the relay terminal according to the present invention described above are briefly summarized in [1] to [5] below.

[1] A relay terminal (10) having a first insertion space (12) and a second insertion space (14) for inserting plate-shaped terminal portions (23, tab terminals 51) from mutually different directions. a busbar (20, 20A) inserted into the insertion space (12);
a housing (lower cover 30) having a terminal receiving portion (33) for positioning the mounting position of the relay terminal (10);
The busbars (20, 20A) are erroneously inserted into the second insertion space (14), or when the plate-like terminal portions (23) of the busbars (20, 20A) are erroneously inserted, When the plate-like terminal portion (23) is erroneously inserted into the first insertion space (12) in the front-rear reverse direction, the relay along the insertion direction of the plate-like terminal portion (23) of the busbars (20, 20A) Having locking protrusions (37, 38) that interfere with the lower end surface (16) of the terminal (10) to prevent entry,
Erroneous insertion detection structure of the relay terminal.

According to the erroneous insertion detection structure of the relay terminal having the above configuration [1], the relay terminal (10) erroneously inserted in the front-rear reverse direction into the plate-shaped terminal portion (23) of the bus bar (20, 20A) is: Intrusion is blocked by interference with the locking projections (37, 38) of the busbars (20, 20A). Therefore, the relay terminal (10) erroneously inserted in the reverse direction projects upward from the mounting position at the time of normal insertion, and the operator can notice the abnormality.
Moreover, the relay terminal (10), in which the plate-like terminal portion (23) of the busbar (20, 20A) is erroneously inserted into the second insertion space (14) of the relay terminal (10), is not engaged with the busbar (20, 20A). It interferes with the blocking protrusions (37, 38) and is prevented from entering. Therefore, the relay terminal (10) whose plate-like terminal (23) is erroneously inserted into the second insertion space (14) protrudes upward from the mounting position at the time of normal insertion, and the operator notices the abnormality. be able to.
Therefore, when the relay terminal (10) is attached to the plate-shaped terminal portion (23) of the bus bar (20, 20A) from above, the operator can easily identify the incorrect assembly of the relay terminal (10). can.

[2] The terminal receiving portion (33) provided on the busbar mounting surface (31) of the housing (lower cover 30) stands in a direction intersecting the busbar mounting surface (31) of the housing (lower cover 30). has a standing wall portion (35) provided,
The busbar (20) includes a mounting portion (21) mounted on the busbar mounting surface (31) and the plate-like terminal portion (23) extending in a direction intersecting the mounting portion (21). , has
When the relay terminal (10) is normally inserted, the vertical wall portion (35) abuts on the relay terminal (10) at the upper end surface (35a) to regulate the mounting height of the relay terminal (10),
The locking protrusion (37) is provided at a position higher than the height of the upper end surface (35a) of the standing wall portion (35) in the plate-like terminal portion (23),
The incorrect insertion detection structure of the relay terminal according to the above [1].

According to the erroneous insertion detection structure of the relay terminal having the configuration [2], the relay terminal (10) normally inserted into the plate-shaped terminal portion (23) of the bus bar (20, 20A) is inserted into the terminal receiving portion ( 33) is in contact with the upper end surface (35a) of the standing wall portion (35) to restrict the assembly height.
The relay terminal (10) incorrectly inserted into the plate-like terminal portion (23) of the busbar (20, 20A) in the front-rear direction is provided in the plate-like terminal portion (23) of the busbar (20, 20A). The lower end surface (16) does not reach the upper end surface (35a) of the vertical wall portion (35) because it interferes with the locking projections (37, 38) that are engaged and prevents entry. Therefore, the relay terminal (10) erroneously inserted in the reverse direction projects upward from the mounting position at the time of normal insertion, and the operator can notice the abnormality.
In addition, the relay terminal (10), in which the plate-like terminal portion (23) of the busbar (20, 20A) is erroneously inserted into the second insertion space (14) of the relay terminal (10), is removed from the plate of the busbar (20, 20A). Since it interferes with the locking protrusions (37, 38) provided on the terminal portion (23) and is prevented from entering, the lower end surface (16) does not reach the upper end surface (35a) of the standing wall portion (35). . Therefore, the relay terminal (10) erroneously inserted in the reverse direction projects upward from the mounting position at the time of normal insertion, and the operator can notice the abnormality.

[3] The relay terminal (10) includes a cylindrical portion (15) having a pair of opposed walls (11, 13), and is arranged in the cylindrical portion (15). ), the plate-like terminal portion (23) is inserted into the cylindrical portion (15) from the other side while being sandwiched between the first insertion space (12) and one of the opposing walls (11). a spring portion (17) for sandwiching the plate-like terminal portion (tab terminal 51) inserted in the second insertion space (14) between the other opposing wall (13) that is the second insertion space (14),
The locking projections (37, 38) interfere with the lower end surfaces (16) of the opposing walls (11, 13) when the relay terminal (10) is erroneously inserted.
The relay terminal mis-insertion detection structure according to the above [1] or [2].

According to the relay terminal erroneous insertion detection structure having the configuration [3], the plate-like terminal portion (23) of the bus bar (20) is erroneously inserted into the second insertion space (14). ), the protruding corner side plate surface (23a) slides along the inner surface of the other opposing wall (13). Since the lower end surface (16) of the other opposing wall (13) abuts against the upper ends of the locking projections (37, 38), the relay terminal (10) is reliably prevented from entering.

Further, when the plate-like terminal portion (23) of the bus bar (20) is erroneously inserted into the first insertion space (12) in the front-rear reverse direction, the plate-like terminal portion (23) of the bus bar (20) is elastically biased by the spring portion (17) to 23a) is slid along the inner surface of one opposing wall (11). Since the lower end surface (16) of one opposing wall (11) abuts against the upper ends of the locking projections (37, 38), the relay terminal (10) is reliably prevented from entering.

[4] The locking protrusion (37) is a protrusion formed on the protruding corner side plate surface (23a) of the plate-like terminal portion (23) bent at the end of the mounting portion (21). is a protrusion,
The incorrect insertion detection structure of the relay terminal according to the above [2].

According to the erroneous insertion detection structure of the relay terminal having the above configuration [4], the locking protrusion (37) can be easily formed integrally with the plate-like terminal portion (23) of the bus bar (20).

[5] The locking protrusion (38) is a cut formed protruding from the protruding corner side plate surface (23a) of the plate-like terminal portion (23) bent at the end of the mounting portion (21). is a triggering piece,
The incorrect insertion detection structure of the relay terminal according to the above [2].

According to the erroneous insertion detection structure of the relay terminal having the configuration [5], the locking protrusion (38) can be easily formed integrally with the plate-like terminal portion (23) of the bus bar (20).

DESCRIPTION OF SYMBOLS 10... Relay terminal 12... 1st insertion space 14... 2nd insertion space 20... Bus-bar 23... Plate-shaped terminal part 30... Lower cover (housing)
33... Terminal receiving part 37... Locking protrusion 51... Tab terminal (plate-shaped terminal part)

Claims (5)

a bus bar inserted into the first insertion space of the relay terminal having a first insertion space and a second insertion space for inserting the plate-like terminal portion from mutually different directions;
a housing having a terminal receiving portion for positioning the mounting position of the relay terminal;
When the plate-like terminal portion of the bus bar is erroneously inserted into the second insertion space, or when the plate-like terminal portion of the bus bar is erroneously inserted into the first insertion space in the opposite direction, having a locking protrusion that interferes with the lower end surface of the relay terminal along the insertion direction of the plate-like terminal of the bus bar to prevent entry of the relay terminal,
Erroneous insertion detection structure of the relay terminal. The terminal receiving portion provided on the busbar mounting surface of the housing has an upright wall portion erected in a direction intersecting the busbar mounting surface of the housing,
The bus bar has a mounting portion mounted on the bus bar mounting surface and the plate-like terminal portion extending in a direction intersecting the mounting portion,
When the relay terminal is normally inserted, an upper end surface of the standing wall portion abuts against a lower end surface of the relay terminal to regulate an assembly height of the relay terminal,
The locking protrusion is provided at a position higher than the height of the upper end surface of the standing wall portion in the plate-like terminal portion.
The incorrect insertion detection structure of the relay terminal according to claim 1. The relay terminal includes a tubular portion having a pair of opposed walls, and a plate-like terminal portion inserted into the tubular portion from one side, which is disposed in the tubular portion. a spring portion that is sandwiched between the plate-like terminal portion inserted into the cylindrical portion from the other side and the other opposing wall that is the second insertion space. ,
The locking protrusion interferes with the lower end surface of the opposing wall when the relay terminal is erroneously inserted.
3. The structure for detecting erroneous insertion of relay terminals according to claim 1 or 2. The locking protrusion is a protrusion that protrudes from the plate surface on the protruding corner side of the plate-like terminal portion that is bent at the end of the mounting portion.
The incorrect insertion detection structure of the relay terminal according to claim 2. The locking protrusion is a cut-and-raised piece protruding from a plate surface on the protruding corner side of the plate-like terminal portion that is bent at the end of the mounting portion.
The incorrect insertion detection structure of the relay terminal according to claim 2.

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