JP3233814B2 - Fusible link block - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fusible link block for mounting a fusible link connected between a battery and an electric device.

[0002]

2. Description of the Related Art FIG. 13 shows a conventional fusible link block described in Japanese Utility Model Laid-Open No. 62-54465. The fusible link block 1 is for connecting a fusible link between a battery and an alternator or between a battery and another electric device in an automobile, and includes a block body 5 and a block body. And a busbar 7 assembled to the busbar 5.

A fusible link mounting portion 11 to which the fusible link 9 is mounted and a terminal fixing portion 13 which is recessed inward are formed in the block body 5.
Has a built-in nut (not shown). Further, the male terminal of the fusible link 9 (hereinafter, referred to as “fusible link terminal”) mounted on the fusible link mounting unit 11 is inserted into the terminal fixing unit 13, and a terminal of an end of the electric wire W (hereinafter, “electric wire”). Together with a terminal 15).

The terminal fixing portion 13 can be opened and closed by a side cover 17 integrally formed on the block body 5 via a hinge 19. A locking projection 21 is provided on a side wall of the block body 5 and a locking claw 23 is provided on a free end side of the side cover 17. The cover 17 is fixed to the terminal fixing portion 13.
Can be held in a closed state.

[0005] The bus bar 7 has one end protruding from the block main body 5 and has a connecting portion 7a connected to the battery post at one end thereof. The other end of the bus bar 7 is arranged on the terminal fixing portion 13 and is fixedly fastened to the terminal fixing portion 13 together with the electric wire terminal and the fusible link terminal as described above. Further, the fusible link block 1 is provided with a cover 25 for covering the upper portion of the fusible link mounting portion 11 with a hinge (not shown) attached to the block body 5.
Are integrally formed.

[0006] Such a fusible link box 1
To assemble, the fusible link 9 is mounted on the fusible link mounting portion 11 with the cover 17 opened, and the fusible link terminal is inserted into the terminal fixing portion 13. Next, the electric wire terminal is inserted into the terminal fixing portion 13, and then the bolt 15 is inserted. The bolt 15 is tightened with a tool such as an impact wrench to fasten the bus bar 7, the fusible link terminal and the electric wire terminal together. Fix it.
After that, the terminal fixing portion 13 is closed by the side cover 17 and the fusible link mounting portion 11 is closed by the upper cover 25 to complete the assembly.

[0007]

In the fusible link block 1 having such a structure, the bus bar 7 is provided.
The present applicant has developed a fusible link block as shown in FIG. 3 as an improvement to the problem (however, it is not known). Some of these technologies are disclosed in Japanese Patent Application Nos. 5-331590 (filed on December 27, 1993), 7-81293 (filed on April 6, 1995), and 7-92268. (Filed on April 18, 1995).

FIG. 3 is an exploded perspective view of the previously developed fusible link, FIG. 4 is a plan view thereof, FIG. 5 is a sectional side view thereof, FIG. 6 is a partial perspective view thereof, and FIG. It is a sectional side view of a state.

As shown in FIG. 3, the fusible link block 45 has a block body 47 made of resin.
One end is connected to the battery post 89 and the other end is connected to the terminal 9a of the fusible link 9 and the terminal 11 of the one electric wire W.
A bus bar 49 that is fixedly fastened to the block main body 47 together with the bus bar 5, a connection cover 51 that covers the fusible link 9 and the bus bar 49, and a cylindrical outer cover 55 that is formed separately from the block main body 47. ing.

The block body 47 has a box shape with an open lower surface, and has terminal fixing portions 53 on both side surfaces. Each terminal fixing portion 53 is formed in a concave portion 61 having a pair of side walls, and as shown in FIG.
It is back-to-back via a partition wall 61a that forms the bottom surface of the recess 61. A nut holding part 200 is provided on the front surface of the partition wall 61a, and the nut 63 is pressed into and held in the nut holding part 200 as shown in FIG.

The outer cover 55 is connected to the block body 47.
The terminal fixing portion 53 of FIG.
As shown in FIG. 7, it is formed in a rectangular cylindrical shape, and is fitted to the outer periphery of the block main body 47 from the lower side of the block main body 47 and can be slid upward. On the outer wall surface of the block main body 47, when the outer cover 55 is fitted to the block main body 47 and slid to a position where the terminal fixing portion 53 is closed, the outer cover 55 is engaged with the outer cover 55 and the outer cover 55 is moved to that position. Lock arm 5 to lock on
7 (see FIG. 3).

A fusible link mounting portion 73 for mounting the fusible link 9 is formed in a concave shape on the upper portion of the block main body 47. The fusible link mounting section 73 is
The terminal 9a of the mounted fusible link 9 is inserted into the terminal fixing portion 53 through the terminal insertion hole 73b through a terminal insertion hole 73b provided in the bottom wall 73a. It has become.

On one side of the fusible link mounting portion 73, a support portion 79 for rotatably supporting the connection portion cover 51 is provided.
Is formed, and the fusible link mounting portion 73 is formed on the other side.
A horizontal wall portion (horizontal wall portion) 81 for supporting a bus bar protruding from an opening edge of the fusible link mounting portion 73 is formed through a vertical wall portion 74 which forms a part of the peripheral wall of the fusible link. The lower side of the busbar supporting horizontal wall portion 81 is a busbar fitting concave portion 82. The busbar fitting concave portion 82 is defined as an L-shaped space in a side view by a horizontal wall portion 81 and a vertical wall portion 74 which are orthogonal to each other. A downward side plate 83 for regulating the position of the edge is formed.

An engagement projection 84 for engaging the bus bar 49 is provided on each inner surface of the pair of side plates 83, 83 facing each other.
Is provided. As shown in FIG. 6, the engaging projection 84 is provided with a guide slope (open surface) 84a on the lower end surface side, and when the bus bar 49 is inserted from below, the side edge of the bus bar 49 becomes the guide slope. By sliding contact with 84a,
The side plate 83 is bent outward and deformed.

The bus bar 49 is formed by bending a plate material into an L-shape. A connecting portion (horizontal plate portion) 86 for connecting to the battery terminal 85 is formed horizontally (horizontally) at one end, and at the other end. A terminal portion (vertical plate portion) 87 arranged on one terminal fixing portion 53 is formed vertically (vertically). Through holes 86a and 87a are formed in the terminal portion 86 and the connection portion 87, respectively. Also, the connecting portion 86 of the bus bar 49
A vertical wall 86s is bent downward at both side edges on the front end side of the bus bar 49, and the front end portion of the bus bar 49 has a U-shaped cross section and is reinforced. Further, the terminal portion 87 of the bus bar 49 is provided with a step portion 88 which engages with the lower end of the vertical wall portion 74 of the bus bar fitting concave portion 82. The step portion 88 regulates the tip end position of the electric wire terminal 115. Has become.

The battery terminal 85 connected to the connecting portion 87 of the bus bar 49 includes a post supporting portion 91 fitted to and electrically connected to the battery post 89, and a connecting portion 95 having a bolt 93 integrally attached thereto. Consists of
The battery terminal 85 is connected to the bus bar 49 by inserting the bolt 93 into the through hole 87 a of the bus bar 49 and tightening the nut 97.

The connection portion 95 of the post support portion 91 of the battery terminal 85 and the post support portion 91 are covered by a connection portion cover 51 rotatably supported by the support portion 79.

The connecting portion cover 51 is in the form of a rectangular cap and has a support shaft 101 rotatably fitted to the support portion 79.
At one end and a post cover 103 at the other end to cover the battery post 89. Also, the support shaft 101
A mounting portion cover portion 105 for closing the fusible link mounting portion 73 is integrally formed between the post cover portion 103 and the post cover portion 103.

When the electric wire terminal 115 is connected to the fusible link block 45 having such a configuration, as shown in FIGS.
7 is assembled in the busbar fitting recess 82. In that case,
Until the electric wire terminal 115 is fixed to the block main body 47 by the bolt 117 (until the final assembly of the harness manufacturing), the bus bar 49 is engaged with the block projection 4 by the engagement projection 84.
Temporarily fix to 7. Further, the outer cover 55 is fitted into the lower portion of the block body 47 from below, and
3 is left open.

Next, in this state, the fusible link 9 is mounted on the fusible link mounting portion 73, the electric wire terminal 115 is inserted from below the outer cover 55, and the electric wire terminal 115 is moved to a predetermined position of the terminal fixing portion 53. insert. Then, on one side, the bus bar 49 is
And the fusible link terminal 9a and the wire terminal 115 are fastened together, and on the other side, the fusible link terminal 9a and the wire terminal 115 are fastened together.

Next, the outer cover 55 is slid upward to engage with the lock arm 57, thereby closing the terminal fixing portion 53. Further, the bus bar 49 is fixed to the battery post 89 via the battery terminal 85, and then the connection cover 51 is put on the fusible link 9, the bus bar 49 and the battery terminal 85. Thus, the fusible link block 45 can be attached to the battery post 89.

In this fusible link block, the bus bar 49 can be easily assembled, but the following points to be improved have been found. Hereinafter, this point will be described.

When assembling the bus bar 49, as shown in FIG. 8, the bus bar 49 is lifted in the vertical direction (arrow A) from below into the bus bar fitting concave portion 82 and fitted. However, there is a possibility that the bus bar 49 is fitted from the lateral direction (arrow B).

However, the bus bar 4 is thus positioned from the side.
9, the engagement projection 84 is engaged from a direction without the guide slope 84a, so that the engagement projection 84 for locking is scraped by the bus bar 49 as shown in FIG. As a result, the bus bar 49 may not be securely fixed.

Further, the engagement projection 84 merely prevents the bus bar 49 from dropping downward, and the horizontal position of the bus bar 49 cannot be restricted. Therefore, FIG.
As shown in FIG. 0, the curved portion of the bus bar 49
Rattling occurs in the range H up to the position where it stops at
There is a possibility that a gap H1 is formed between the lower end of the terminal portion 87 and the terminal fixing portion 53.

If the gap H1 is formed, the electric wire terminal 115 may be erroneously inserted into the gap H1, and as shown in FIG. 11, the fusible link terminal 9a inserted earlier is inserted into the electric wire terminal 115. It may bend. Further, even when the fusible link terminal 9a is not damaged, if the electric wire terminal 115 is assembled as it is, that is, if the bus bar 49 and the electric wire terminal 115 are installed in reverse, the assembled state as shown in FIG.
The external dimensions L may change, which may hinder assembly to the vehicle.

An object of the present invention is to provide a fusible link block capable of restricting the fitting direction of a bus bar in a correct direction and accurately positioning the bus bar in consideration of the above circumstances.

[0028]

According to a first aspect of the present invention, there is provided a block body having a terminal fixing portion, a horizontal plate portion bent in an L shape and connected to a battery post at one end, and the block at the other end. A busbar provided with a vertical plate portion that is fixedly fastened together with the fusible link terminal and the wire terminal to the terminal fixing portion, and a horizontal wall portion provided on the block body and corresponding to the horizontal plate portion and the vertical plate portion of the busbar and A busbar fitting concave portion having a vertical wall portion, a side plate vertically suspended on both side edges of the horizontal wall portion of the busbar fitting concave portion, and a side plate for regulating the position of both side edges of the horizontal plate portion of the busbar, and protruding from the inner surface of the side plate, When the engagement projections that are engaged with both side edges of the horizontal plate portion of the bus bar and formed on the engagement projections, when the horizontal plate portion is approached in the vertical direction in a posture substantially parallel to the horizontal wall portion,
A guide slope that slidably touches both side edges of the horizontal plate portion to deflect the both side plates outward, and is provided on one of the inner surface of the side plate or the both side edges of the horizontal plate portion of the bus bar, and the bus bar is provided with a bus bar from the lateral direction. When trying to fit in the fitting recess, a guide rib that prevents insertion of the bus bar, provided on the other,
An engagement groove slidably engaged with the guide rib when the bus bar is fitted into the bus bar fitting recess in a state where the bus bar is at an appropriate position with respect to the vertical wall portion.

According to a second aspect of the present invention, there is provided the fusible link block according to the first aspect, wherein the engaging groove is provided on a side plate on a rear end side of the engaging protrusion, and the guide rib is a horizontal plate of a bus bar. The fusible link block is provided on the side of the vertical plate on both side edges of the section.

According to a third aspect of the present invention, there is provided a block body having a terminal fixing portion, a horizontal plate portion bent in an L shape and connected to a battery post at one end, and fusible to the terminal fixing portion at the other end. A bus bar provided with a vertical plate portion that is fixedly fastened together with the link terminal and the electric wire terminal; and a bus bar provided on the block body and having a horizontal wall portion and a vertical wall portion corresponding to the horizontal plate portion and the vertical plate portion of the bus bar. A mating recess,
A side plate which is vertically provided on both side edges of the horizontal wall portion of the bus bar fitting concave portion and regulates the position of both side edges of the horizontal plate portion of the bus bar, and protrudes from the inner surface of the side plate and engages with both side edges of the horizontal plate portion of the bus bar. An engaging projection formed on the engaging projection, and when the horizontal plate portion is approached in the vertical direction in a posture substantially parallel to the horizontal wall portion, the both side plates are slid outwardly by sliding contact with both side edges of the horizontal plate portion. The guide slope to be bent and the inner surface of the side plate that is more distal than the engagement protrusion project from the inner surface of the side bar. A guide rib to be blocked and formed on both side edges of the horizontal plate portion of the bus bar, and the bus bar is slidable on the guide rib when the bus bar is fitted in the bus bar fitting recess in a state where the bus bar is at an appropriate position with respect to the vertical wall portion. And an engagement groove that engages with the groove.

According to a fourth aspect of the present invention, there is provided the fusible link block according to the third aspect, wherein a vertical wall is formed by bending a side wall of the bus bar at the front end of the horizontal plate portion, and the hanging member is formed immediately after the vertical wall. The groove is formed.

[0032]

According to the first aspect of the present invention, when the bus bar is to be fitted into the bus bar fitting recess from the lateral direction, the insertion is prevented by the guide rib. Therefore, it is possible to prevent the engagement projection from being damaged by erroneous fitting from the lateral direction. When the bus bar is to be fitted into the bus bar fitting concave portion from the vertical direction, if the bus bar is at an appropriate position with respect to the vertical wall portion, the engaging groove engages with the guide rib. When the bush bar is positioned at an appropriate position, the bush bar can be temporarily held by the engagement protrusion by engaging the engagement protrusion with both side edges of the bus bar. Therefore, the fusible link terminal is not damaged when the electric wire terminal is inserted, and the external dimensions can be properly maintained.

According to the second aspect of the present invention, when the bus bar is to be fitted into the bus bar fitting recess from the lateral direction, the guide ribs provided on both side edges of the bus bar abut against the tip end side of the side plate to prevent insertion. . Further, when the bus bar is to be fitted into the bus bar fitting concave portion from the vertical direction, if the bus bar is at an appropriate position, the guide rib is engaged with the engaging groove of the side plate on the rear end side of the engaging projection 84. Can be inserted into the busbar fitting recess.

According to the third aspect of the present invention, when the bus bar is to be fitted into the bus bar fitting recess from the lateral direction, the bus bar interferes with the guide rib, and the bus bar is prevented from fitting. Therefore, it is possible to prevent the engagement projection from being damaged by erroneous fitting from the lateral direction.
When the bus bar is to be fitted into the bus bar fitting concave portion from the vertical direction, if the bus bar is at an appropriate position with respect to the vertical wall portion, the engaging groove engages with the guide rib. When the bush bar is positioned at an appropriate position, the bush bar can be temporarily held by the engagement protrusion by engaging the engagement protrusion with both side edges of the bus bar. Therefore, the fusible link terminal is not damaged when the electric wire terminal is inserted, and the external dimensions can be properly maintained.

According to the fourth aspect of the present invention, when the vertical wall is formed by bending both side edges of the horizontal plate portion of the bus bar, wrinkles may be formed immediately after that, but the engaging groove is formed in that portion.
Wrinkles can be eliminated.

[0036]

An embodiment of the present invention will be described below with reference to the drawings.

The configuration other than the main parts described below is
Since it is the same as the fusible link block shown in FIGS. 3 to 7, the same components are denoted by the same reference numerals, and description thereof will be omitted.

FIG. 1 is a perspective view of the busbar fitting recess 82 of the fusible link block according to the embodiment as viewed from below, and FIG. 2 is a plan view of the fusible link.

The bus bar 49 is bent in an L-shape, and has a connection portion (lateral plate portion) 8 connected to the battery post at one end.
6. A terminal portion (vertical plate portion) that is fixed together with the fusible link terminal and the wire terminal to the terminal fixing portion 53 on the other end side.
87. Further, the connecting portion 86 has vertical walls 86s on both side edges on the tip side.

The busbar fitting concave portion 82 has a horizontal wall portion (horizontal wall portion) 81 and a vertical wall portion 74 corresponding to the connection portion 86 and the terminal portion 87 of the busbar 49, and is provided on both side edges of the horizontal wall portion 81. Has a side plate 83. Further, the inner surface of the side plate 83 has an engagement protrusion 84, and the lower end surface side of the engagement protrusion 84 has a guide inclined surface 84 a.

Then, a bus bar 49 is laterally inserted into the bus bar fitting recess 82 on the inner surface of the side plate 83 at the front end side (in this example, the front end) of the engagement projection 84a of the bus bar fitting recess 82.
A guide rib 100 is provided so as to interfere with the bus bar 49 and prevent insertion of the bus bar 49 when trying to fit the bus bar 49. In addition, the bus bar 49 is attached to the vertical wall portion 74 on both side edges immediately after the vertical wall 86 s of the connecting portion 86 of the bus bar 49.
When the bus bar 49 is fitted into the bus bar fitting concave portion 82 in a state where the bus bar 49 is at an appropriate position with respect to the guide rib 100, an engagement groove 102 is provided to slidably engage with the guide rib 100.

Therefore, when trying to fit the bus bar 49 into the bus bar fitting concave portion 82 from the lateral direction, the bus bar 49 interferes with the guide rib 100, so that the bus bar 49 is prevented from fitting. As a result, it is possible to prevent the engagement projection 84 from being damaged due to an incorrect fitting from the lateral direction.

If the bus bar 49 is to be fitted into the bus bar fitting recess 82 from the vertical direction, the bus bar 49
Is located at an appropriate position with respect to the vertical wall portion 74, the engagement groove 102
Engages with the guide rib 100, so that the bus bar 49 can be inserted into the bus bar fitting recess 82. Then, the engagement protrusion 8
When the bus bar 49 is positioned at an appropriate position by the engagement of the side edge of the bus bar 49 with the side edge of the
As a result, the fusible link terminal can be temporarily held so as not to fall off, and the fusible link terminal is not erroneously damaged when the electric wire terminal is inserted, and the external dimensions are not enlarged due to an incorrect assembly.

In this embodiment, the guide ribs 100 are provided on the front end side of the inner surface of the side plate 83 of the block main body 47, and the engagement grooves 102 with which the guide ribs 100 are engaged are formed on both side edges of the horizontal plate portion 86 of the bus bar 49. The guide ribs are provided on both side edges of the bus bar 49, and the engagement grooves 102 are formed on the side plates 83.
May be formed on the inner surface. In this case, the engagement groove 102 is formed on the inner surface of the side plate 83 on the rear end side of the engagement protrusion 84,
The guide ribs 100 are formed on both side edges of the horizontal plate portion 86 on the side of the vertical plate portion 87.

[0045]

As described above, according to the first aspect of the present invention, the fitting direction of the bus bar can be restricted to only the correct direction. Damage to the projection is eliminated. Also,
When the bus bar is mounted from the correct direction, the bus bar can be held at an appropriate position by the engagement of the engagement groove and the guide rib, so that the rattle of the bus bar in the temporarily fixed state can be eliminated. When inserting the electric wire terminal, the fusible link terminal is not damaged, and the external dimensions are not enlarged due to incorrect assembly.

According to the second aspect of the present invention, the engagement direction of the bus bar can be restricted to only the correct direction by the engagement between the guide rib and the engagement groove. Therefore, it is possible to prevent the bush bar from being erroneously fitted from the side and damaging the engagement projection. Further, when the bus bar is mounted from the correct direction, the bus bar can be held at an appropriate position by the engagement between the engagement groove and the guide rib.

According to the third aspect of the present invention, the fitting direction of the bus bar can be restricted to only the correct direction. Therefore, it is possible to prevent the bush bar from being erroneously fitted from the side and damaging the engagement projection. Also, when the bus bar is mounted from the correct direction, the bus bar can be held at an appropriate position by the engagement of the engagement groove and the guide rib, so that the rattle of the bus bar in the temporarily fixed state can be eliminated, When inserting the electric wire terminal, the fusible link terminal is not damaged, and the external dimensions are not enlarged due to incorrect assembly.

According to the fourth aspect of the present invention, since the engagement groove is provided in a portion where wrinkles can occur during processing, wrinkles can be eliminated and bending of the vertical wall can be easily performed. In other words, a groove provided when processing a vertical wall can be used as an engagement groove.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a fusible link block according to one embodiment of the present invention, as viewed from below a busbar mounting portion.

FIG. 2 is a bottom view showing a state before the fusible link block according to the embodiment of the present invention is attached to a bus bar.

FIG. 3 is an exploded perspective view showing the entire configuration of a fusible link block (unknown) previously developed by the present applicant.

FIG. 4 is a plan view of a fusible link block previously developed by the present applicant.

FIG. 5 is a view taken in the direction of arrows VV in FIG. 4;

FIG. 6 is a perspective view of the fusible link block of FIG. 4 as viewed from below a busbar fitting recess.

FIG. 7 is a sectional view showing an appropriately assembled state of a fusible link block developed earlier by the present applicant.

FIG. 8 is a cross-sectional view showing a state in which a bus bar is going to be incorporated into the block body of the fusible link block developed earlier by the present applicant.

9 is an explanatory diagram of a problem that may occur when the bus bar is incorporated into the block main body from the wrong direction shown in FIG.

FIG. 10 is an explanatory diagram of another problem that may occur in the fusible link block developed earlier by the present applicant.

FIG. 11 is an explanatory diagram of a problem that may occur from the state shown in FIG. 10;

FIG. 12 is an explanatory diagram of another problem that may occur from the state shown in FIG. 10;

FIG. 13 is a perspective view showing an example (known example) of a conventional fusible link block.

[Explanation of symbols]

 9a fusible link terminal 45 fusible link block 47 block body 49 busbar 53 terminal fixing part 74 vertical wall 81 horizontal wall (horizontal wall) 82 busbar fitting concave part 83 side plate 84 engagement projection 84a guide slope 86 connection part (horizontal) 86s Vertical wall 87 Terminal part (vertical plate part) 89 Battery post 100 Guide rib 102 Engagement groove 115 Electric wire terminal

Continuation of the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) H01H 85/54 H01H 85/56 H01M 2/34

Claims (4)

(57) [Claims] 1. A block body having a terminal fixing portion, an L-shaped bent side plate portion connected to a battery post on one end side, and a fusible link terminal and an electric wire terminal on the other end side. A bus bar provided with a vertical plate portion that is fixedly fastened together, and a bus bar fitting recess provided on the block main body and having a horizontal wall portion and a vertical wall portion corresponding to the horizontal plate portion and the vertical plate portion of the bus bar, A side plate that is vertically provided on both side edges of the horizontal wall portion of the bus bar fitting concave portion and that regulates the position of both side edges of the horizontal plate portion of the bus bar; and protrudes from the inner surface of the side plate and engages with both side edges of the horizontal plate portion of the bus bar. An engaging projection formed on the engaging projection, and when the horizontal plate portion is approached in the vertical direction in a posture substantially parallel to the horizontal wall portion, the both side plates are slid outwardly by sliding contact with both side edges of the horizontal plate portion. A guide slope to be bent, an inner surface of the side plate or a horizontal plate of a bus bar A guide rib provided on one of both side edges of the portion to prevent the bus bar from being inserted when the bus bar is to be fitted into the bus bar fitting concave portion from the lateral direction; and provided on the other side, the bus bar is provided vertically. A fusible link block, comprising: an engagement groove slidably engaged with the guide rib when the bus bar is fitted into the bus bar fitting recess in a state where the bus bar is at an appropriate position with respect to the wall. 2. The fusible link block according to claim 1, wherein the engagement groove is provided on a side plate on a rear end side of the engagement protrusion, and the guide ribs are formed on both side edges of a horizontal plate portion of a bus bar. A fusible link block which is provided on a vertical plate side. 3. A block body having a terminal fixing portion, an L-shaped bent horizontal plate portion connected to a battery post at one end, and a fusible link terminal and an electric wire terminal connected to the terminal fixing portion at the other end. A bus bar provided with a vertical plate portion that is fixedly fastened together, and a bus bar fitting recess provided on the block main body and having a horizontal wall portion and a vertical wall portion corresponding to the horizontal plate portion and the vertical plate portion of the bus bar, A side plate that is vertically provided on both side edges of the horizontal wall portion of the bus bar fitting concave portion and that regulates the position of both side edges of the horizontal plate portion of the bus bar; and protrudes from the inner surface of the side plate and engages with both side edges of the horizontal plate portion of the bus bar. An engaging projection formed on the engaging projection, and when the horizontal plate portion is approached in the vertical direction in a posture substantially parallel to the horizontal wall portion, the both side plates are slid outwardly by sliding contact with both side edges of the horizontal plate portion. Of the guide slope to be bent, and the side plate on the tip side relative to the engagement protrusion. Guide ribs projecting from the inner surface and interfering with the bus bar when trying to fit the bus bar into the bus bar fitting recess from the lateral direction, and formed on both side edges of the horizontal plate portion of the bus bar, An engaging groove slidably engaged with the guide rib when the bus bar is fitted in the bus bar fitting concave portion in a state where the bus bar is at an appropriate position with respect to the vertical wall portion. Bull link block. 4. The fusible link block according to claim 3, wherein a vertical wall is formed by bending a side wall of the horizontal plate portion of the bus bar at a front end side, and the engaging groove is formed immediately after the vertical wall. A fusible link block, characterized in that: