JP2002171643A - Fuse, and connection structure of the fuse and bus bar - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce a vertical size of a fuse and ensure reliability of conductive connection. SOLUTION: The input/output terminals 12a having a fusing portion 12 formed by punching a conductive metallic plate is molded inside the insulation resin retaining case 12b. A tab 12c is projected through both side 11a of the retaining case 12b, thereby reducing a vertical size of a fuse 10. In connection with a bus bar 50, the tab 12c of the fuse 10 is insulation displaced and connected to an insulation displacement slot 51a of a female tab 51 on the bus bar 50 side, so as to secure a stable connection state.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fuse and a connection structure between the fuse and a bus bar, and more particularly, to a vertical direction of the fuse in order to cope with miniaturization and high density of an electric junction box to which the fuse is applied. It is intended to reduce the size and to enable a connection mode equivalent to the connection of multiple fuses having different capacities.

[0002]

2. Description of the Related Art Various electric circuits are formed in an automobile or the like for the operation of each electric component and the like, and a fuse is applied to protect these electric circuits. There are various types of these fuses depending on the application location of the circuit. Usually, the fuses are often mounted on an electric connection box such as a fuse box to form a required fuse circuit.

FIG. 11 shows a conventional fuse 1 in which an input / output terminal 2 having a fusing portion 2a is connected to a resin holding case 1a.
And a tab 2b continuous with the input / output terminal 2 is projected from the lower surface of the holding case 1a. These tabs 2b were inserted into the pressure-contact slots 3b of the female tabs 3a formed by bending the ends of the busbars 3 disposed on the insulating plate Z inside the electric connection box, and connected the fuses 1 to the busbars 3 by pressure. A fuse circuit is formed.

However, recently, the miniaturization or high-density of the electric junction box has been advanced, and the dimensions of the fuse itself and the connection structure have also been required to be reduced. In the connection state shown in FIG. It is pointed out that the dimension t1 increases. In response to such an indication, there is a fuse 1 'having a reduced vertical dimension as shown in FIG.
The lower end of the holding case 1a 'is cut out to expose the input / output terminal 2', and this exposed portion is inserted into the press-fitting slot 3b of the female tab 3a as a tab 2b '.

[0005] Further, in addition to the fuse 1 ', the vertical dimension is reduced, such as the fuse 4 of Japanese Utility Model Application Laid-Open No. 56-51239 shown in FIGS. 13 (A) and 13 (B), and FIG.
A fuse 4 'disclosed in Japanese Utility Model Laid-Open No. 56-2562 shown in FIG. The fuse 4 exposes the tab 5 on the side surface of the holding case 4a, inserts the fuse 4 into a hole Za formed in the insulating plate Z, and extends the bus bar 3 extending to the inner surface of the hole Za.
The end portion 3d elastically holds the fuse 4 and is electrically connected to the tab 5. Also, the fuse 4 ′ exposes the tab 5 ′ on the side surface of the holding case 4 a ′ and is inserted into the fuse accommodating portion H of the electric connection box to insert the tab 3 ′ of the bus bar 3 ′.
a '.

Recently, as shown in FIG.
In order to increase the circuit density, a so-called multi-fuse 6 having two fuses 7a and 7b in one fuse is sometimes applied to a bus bar 3 "constituting a fuse circuit. Also, FIG.
In some cases, a multi-fuse 6 'having a reduced vertical dimension as shown in FIG.

[0007]

The fuse 1 'shown in FIG. 12 described above has a cut-out portion of the holding case 1a'. Therefore, when the fuse 1 'is inserted or removed, a portion capable of holding the holding case 1a'. Is reduced and restricted, and there is a problem that workability at the time of inserting or removing the fuse is deteriorated.

In the fuse 4 shown in FIGS. 13A and 13B, since the connection between the fuse 4 and the bus bar 3 depends on the elastic retention of the bus bar 3d, the elastic force of the bus bar 3d is weak. In such a case, there is a possibility that reliable conduction cannot be guaranteed. Further, since the fuse 4 itself is inserted into the hole Za of the insulating plate Z, a space for accommodating the fuse 4 is required below the hole Za. It is difficult to secure this space with an electric junction box having stacked internal circuits, and it is a factor that hinders high-density circuits. In addition, since the connection between the fuse 4 and the bus bar 3 is performed on the side surface of the holding case 4a, there is a problem that it cannot be physically realized in a multi-fuse connection mode.

On the other hand, the fuse 4 'shown in FIGS.
Is electrically connected by the contact between the tab 5 'protruding from the holding case 4a' and the tab 3a 'of the bus bar 3' along the inner wall of the fuse accommodating portion H. It is necessary to improve the accuracy of the protrusion amount of the 'and the inner width dimension of the fuse accommodating portion H, and there is a problem that cost and labor are required for accuracy control and the like. Further, since the fuses 4 'are also individually inserted into the fuse connectors H and connected on the side surface of the holding case 4a', there is a problem that a multi-fuse cannot be physically achieved.

Further, although the vertical size of the multi-fuse 6 'shown in FIG. 15B is smaller than that of the multi-fuse 6 shown in FIG.
When the capacities of a 'and 7b' are different, for example, a directionality occurs in the multi-fuse 6 ', the direction of connection to the bus bar is specified, and the fuse direction at the time of insertion needs to be uniform.
However, since the multi-fuse 6 'is symmetrical in shape, the insertion direction is likely to be wrong during the insertion operation.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and a first object of the present invention is to reduce the vertical dimension of a fuse while maintaining insertion workability and reliable electrical connection with a bus bar. And It is a second object of the present invention to make a multi-fuse connection configuration possible by using a plurality of fuses having small vertical dimensions and to prevent erroneous insertion at the time of this connection.

[0012]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides an insulation between a fusing portion formed by punching a conductive metal plate and an input / output terminal continuous from both ends of the fusing portion. The periphery of the fusing portion is molded with a resin while leaving a space, and the holding case is formed, and a tab that is connected to the female tab of the bus bar by pressure contact continuously from each end of the input / output terminal, There is provided a fuse characterized by projecting from both side surfaces of the holding case to reduce the overall height dimension.

As described above, if the input / output terminals including the fusing portion are molded in the holding case, the productivity of the fuse can be increased, and the tab for press-connecting the bus bar to the bus bar can be provided. Since the fuse is projected from both side surfaces, the vertical dimension of the fuse itself can be reduced as compared with a conventional fuse in which a tab projects from the lower surface of the holding case. In addition, since the holding case is not provided with a notch or the like for projecting a tab, there is no problem in holding the fuse at the time of insertion or the like. Conductivity can be ensured, and even in the case of molding, since a space is provided around the fusing portion, fusing at the time of overcurrent can be performed reliably.

Further, a fusing portion formed by punching a conductive metal plate and an input / output terminal continuous from both ends of the fusing portion are provided in a holding case made of insulating resin at least around the fusing portion. At the same time, the tabs that are connected to the female tabs of the bus bar by pressure contact with the female tabs of the bus bar from both ends of the input / output terminals are projected from both sides of the holding case, and the overall height is reduced. We also offer fuses that are characterized by being low. As described above, in addition to the type in which the holding case is molded, even in the case of a fuse in which a fusing portion and a terminal are incorporated in the internal space of the holding case made of resin, the tabs for press-contact connection protrude from both side surfaces of the holding case. Thus, the vertical dimension of the fuse can be reduced.

The holding case and the tab are formed symmetrically with respect to a horizontal line passing through the center in the vertical direction, and can be connected to the female tab on the bus bar side from any direction. If the fuses are formed vertically symmetrically as described above, they can be inserted from either top or bottom direction, and since they are also symmetrical in the left and right direction, the directionality of the fuse with respect to insertion is lost, and it is necessary to pay attention to the direction of the fuse at the time of insertion And the workability for inserting the fuse can be improved.

The tip of the tab is bent at a right angle to the front side or the rear side of the holding case. If the tip of the tab is bent in this way, it is not necessary to align the female tabs on the bus bar side in the same direction, which can contribute to a higher density circuit. For example, in the case where the direction of the input tab and the output tab on the bus bar side is different by 90 degrees in the fuse connection portion of the electric connection box, if a conventional fuse is to be mounted, the bus bar provided with any tab is provided. It is necessary to arrange the tab directions in such a manner as to go around, but in the present invention, by changing the tab direction on the fuse side, it is not necessary to go around the bus bar, and it is possible to promote the high density of the circuit. The tab of the fuse may be bent in accordance with the tab direction on the bus bar side, or only one or both may be bent.

In addition, erroneous insertion of the fuse can be prevented by bending the tip of the tab of the fuse as described above. For example, one electrical junction box has a capacity of 3 amps,
When inserting four types of fuses such as 5 amps, 10 amps, and 15 amps, if the bending state of the tab is different for each type and the tab direction on the bus bar side is also different, even if an incorrect fuse is inserted, Since it cannot be physically inserted, erroneous insertion can be reliably prevented.

Further, the present invention provides a connection structure between a fuse and a bus bar in which a tab of a fuse is inserted into a press-contact slot of a female tab formed by bending a tip of a bus bar. By inserting each tab on the opposite side into the press-contact slot of the same female tab, while inserting the tabs on the other side into the press-contact slots of different female tabs, respectively. The present invention provides a connection structure between a bus bar and a fuse configured to reduce the number of female tabs for connecting a fuse of the bus bar.

As described above, when a plurality of fuses having the above-described shapes are inserted side by side, tabs protruding from the mutually facing surfaces on the adjacent side are inserted into the same female tab on the bus bar side, so that a so-called multiple fuse is inserted. The same connection form as that of the fuse can be achieved, the density of the internal circuit can be increased, and the number of female tabs provided on the bus bar side can be reduced without particularly manufacturing a fuse having a multi-fuse shape.

The tabs to be inserted into the press contact slots of the same female tab are inserted one above the other, and the slot width of the press contact slots is set to a size corresponding to two thicknesses of the inserted tabs. are doing. As described above, by inserting the tabs of the different fuses into the female tabs with the slot width of the press contact slot being increased, the press contact connection is facilitated and the conduction can be reliably ensured. The fuses to be inserted side by side can be either the same or different in the capacity of the fusing portion. If the capacities of the fusing portions are different, in order to prevent erroneous insertion, one of the fuses must be replaced. It is preferable to bend the tip of the tab on the side not inserted into the same female tab as described above.

[0021]

Embodiments of the present invention will be described below with reference to the drawings. FIGS. 1A and 1B show a fuse 10 according to a first embodiment of the present invention, in which input / output connection tabs 12c protrude from both side surfaces 11a of a holding case 11 made of insulating resin. The fuse 10 is attached to the holding case 1
1, a fusing portion 12b formed by punching a conductive metal plate and input / output terminals 12a continuous with both ends of the fusing portion 12b are located.
From the end of the tab 12, the tab 12 described above is
c is formed. The cross-sectional area of the narrow portion of the fusing portion 12b is set to a size such that when a current value exceeding a specified value flows, fusing is caused by resistance heating. The fuses of each capacity are prepared.

Input / output terminal 12a and fusing portion 12b
Is molded so that the terminal 12a and the fusing portion 12b are housed inside the holding case 11 when the holding case 11 is formed. This molding is performed as shown in FIG.
As shown in (A) and (B), resin is filled so that a space K exists around the fusing portion 12b, so that fusing is surely performed at the time of overcurrent. The fuse 10 thus formed has a shape in which the tab 12c protrudes in the horizontal direction, and thus has a reduced overall height. Further, since the holding case 11 is not provided with a cutout portion, a sufficient area for an operator to grip the holding case 11 when inserting or removing a fuse is secured.

The connection of the fuse 10 to the bus bar 50 is as follows.
The press-contact slot 51a of the female tab 51 formed by bending the tip of the bus bar 50 disposed on the insulating plate Z,
The tab 12c of the fuse 10 is inserted for pressure connection. Even in this connection state, the dimension T1 of the fuse 10 projecting upward from the upper surface of the bus bar 50 is smaller than the projection dimension t1 of the conventional fuse 1 shown in FIG. 11, and is substantially the same as the projection dimension t2 of the fuse 1 'in FIG. As a result, the outer dimensions of the electric connection box to which the fuse 10 is connected are also reduced. The fuse 10
The connection between the bus bar 50 and the bus bar 50 is a press-connecting connection.
The reliability of the connection state is also improved as compared with the fuses 4 and 4 ′ of No. 4, and high accuracy is not required for the dimensions of each part as compared with the fuse 4 ′.

The fuse of the first embodiment is a modified example other than the above-described molding, and has a fusing portion formed by punching a conductive plate in an inner space of an insulating resin holding case 11 'shown in FIG. 12b 'and the fusing portion 12b'
Terminal 12a 'at both ends of the cover 1
1c 'may be closed to form the fuse 10'. This fuse 10 ′ is connected to the slit 11 b ′ provided in the side surface 11 a ′ of the holding case 11 ′ by connecting the terminal 12 a ′ or the like to the female tab of the bus bar continuously and horizontally outward from the terminal 12 a ′ on both sides. Tab 12
c 'is inserted and the side face 11a'
The tab 12c 'protrudes further, and the vertical dimension is reduced like the fuse 10.

As shown in FIGS. 4A, 4B, and 4C, the fuse 10 and the fuse 10 'of the first embodiment insulate the fuse having the same or different capacity at the fusing portion. It is also possible to connect two bus bars 60 on the plate Z side by side. For example, a fuse 10-1 having a fuse capacity of 3 amps and a fuse 10-2 having a capacity of 5 amps
And the opposing tabs 12c whose side faces are adjacent to each other
-1 and the tab 12c-2 are overlapped with each other and inserted into the pressure contact slot 61a of the same female tab 61 on the power supply circuit side on the circuit in the bus bar 60. The width of the press-contact slot 61a is set to a wide dimension such that two tabs can be inserted into one tab insertion slot. Also, the other tab 12d-1 of the fuse 10-1
Is connected to the press-fitting slot 62a of the female tab 62 of the bus bar having a breaking current value of 3 amps by pressure, and the other tab 12d-2 of the fuse 10-2 is also connected to the load circuit side of 5 amps. Is press-connected to the press-contact slot 63 a of the female tab 63.

As described above, by using two fuses of the above-described configuration, the same connection configuration as that of the multi-fuse can be realized. As a result, the number of female tabs on the power supply circuit side on the bus bar side to be connected can be reduced and the bus bar can be reduced. The circuit has been further densified.

The connection form similar to that of the multi-fuse may be the connection form shown in FIGS. 5A and 5B other than the above. In the bus bar 60 ', the slot width of the press contact slot 61a' of the female tab 61 'on the power supply circuit side is set to a dimension corresponding to the dimension of one tab, and the slot groove is formed deep. Further, the holding portion 6 protruding from the slot
1b 'and 61c' are provided at two places. Further, the female tab 62 'on one load circuit side is provided with a pressure contact slot 62a' so as to be lower in height and at the same height as the deeper holding portion 61b 'of the female tab 61' on the power supply circuit side. The female circuit tab 63 'on the load circuit side is provided with a pressure contact slot 63a' so as to be at the same height as the shallow holding portion 61c 'of the female tab 61'.

Tab 12c-1 of one fuse 10-1
Are the pressure contact slots 61 of the female tab 61 'on the power supply circuit side.
It is inserted deep into a ′ and is press-connected by the holding portion 61b ′, and the other tab 12d-1 is press-connected to the female tab 62 ′ on the load side circuit side. Also, the other fuse 10
-2 tab 12c-2 is a female tab 61 'on the power supply circuit side.
Of the shallow holding portion 6
1c ', and the other tab 12d-2 is connected by pressure to the female tab 63' on the load side circuit side. In this manner, a connection mode similar to that of the multi-fuse is realized by the fuses 10-1 and 10-2. FIG.
As shown in (C), the other fuse 10-2 is turned upside down and inserted into the female tabs 61 ', 63' to make a pressure contact connection, and the fuses 10-1, 10-1 and 10-1 from the upper surface of the bus bar 60 'are formed.
The protrusion height of 0-2 may be reduced.

FIG. 6A shows a fuse 20 according to a second embodiment of the present invention, in which the shape of the holding case 21 itself and a tab 22 protruding from the side surface 21a of the holding case 21 are shown.
The shape of c is formed so as to be symmetric with respect to a virtual horizontal line S passing through the center position of the holding case 21 in the vertical direction. That is, the holding case 21 has a vertically symmetrical shape, and the tabs 22 c are connected to the continuous input / output terminals 22.
The projection is made to be vertically symmetrical with the same dimension as the vertical dimension of a. The configuration other than the above is the same as the configuration of the first embodiment. Besides forming the terminal 22a and the fusing portion in the holding case 21 as a module, it is also possible to form a fuse by incorporating a terminal or the like in the holding case. It is.

The connection between the fuse 20 and the bus bar 50 is as follows.
The press-fitting connection to be inserted into the press-fitting slot 51a of the female tab 51 of the bus bar 50 is the same as in the first embodiment, but since the fuse 20 is vertically symmetrical, FIG.
As shown in (C), the lower surface side 21b of the holding case 21,
Alternatively, the female tab 5 may be provided from any side of the upper side 21c.
1 can be inserted. Further, since the fuse 20 is symmetrical with respect to a vertical line passing through the center position of the holding case 21 in the left-right direction, the fuse 20 is not only vertically symmetric but also left-right symmetric. Therefore, the fuse 20 is connected to the bus bar 50
When inserting into the female tab 51, pressure connection can be made from any direction without paying attention to the top, bottom, front and back.

FIGS. 7A, 7B and 7C show a fuse 20 'according to a modification of the second embodiment, and a tab 22c'.
Is formed not only over the entire area in the up-down direction, but only in the center part in the up-down direction to form a vertically symmetrical shape, and is inserted into the female tab 51 of the bus bar 50 without worrying about the direction of the upper and lower sides and press-fit connection. Is going. FIG.
As shown in (B), the connection state of the fuse 20 ′ is such that the holding case 21 ′ fits between the female tabs 51 because the tab 22 c ′ is located at the center in the vertical direction. The protrusion T2 from FIG.
It is even lower than the protrusion dimension T1 of the fuse 10 shown in FIG. The fuses 20 and 20 'are also shown in FIG.
(A) and (B) can be applied to the connection form like a multi-fuse.

FIGS. 8A, 8B, and 8C show a fuse 30 according to a third embodiment of the present invention. One of the tabs of the fuse 10 or the fuse 10 'of the first embodiment is held in a holding case. 31 is bent 90 degrees toward the front side 31d. Other parts have the same configuration as the first embodiment. Also, an insulating plate Z into which the fuse 30 is inserted.
The upper bus bar 70 has a female tab 71 and the other female tab 72 which are not in the same direction but have a 90-degree phase because the bus bar strip 70a exists near the connection with the fuse to increase the circuit density. They are facing different directions. Therefore, the connection between the fuse 30 and the bus bar 70 is performed by inserting one tab 32c of the fuse 30 into the female tab 71 and inserting the other bent tab 32d into the female tab 72 so that the directions of the female tabs 71 and 72 are different. Even press-connecting is possible.

The fuse 30 according to the third embodiment can be bent in a direction other than the above-mentioned embodiment, and the tabs on both sides can be the front side or the rear side of the holding case 31 according to the direction of the female tab of the bus bar. May be refracted in the direction,
Further, the light may be refracted in different directions.

When multiple types of fuses having different capacities are connected to one electric connection box, a fuse having a bent tip of the tab may be used to prevent erroneous insertion. As shown in FIG. 9, when the fuse 10 of the first embodiment, the fuse 30 of the third embodiment, and the fuses 30 ′ and 30 ″ of the modification of the third embodiment are used,
Four types of fuses having different tab directions can be formed, and erroneous insertion can be prevented by forming a female tab of a bus bar according to the tab shape of these fuses. For example, if the capacity is 3
The ampere has the shape of the fuse 10, the 5 amp has the shape of the fuse 30, the 10 amp has the shape of the fuse 30 ', and the 15 amp has the shape of the fuse 3.
In addition to the 0 "shape, the bus bars to be connected to each fuse are also formed with female tabs 81 to 88 in a direction corresponding to each tab shape to physically prevent incorrect insertion.

In the fuse 30 of the third embodiment, when the tabs on both sides are bent in the same direction, the fuse may be vertically symmetrical in the same shape as the second embodiment. Also, the fuse 30 of the third embodiment can have the same form as the connection form of the multi-fuse. In this case, as shown in FIG. 10, the fuses 10 and the fuses 30 having different capacities are arranged, and the tabs 12c and 32c on the adjacent and adjacent sides are formed in the same shape without bending, and the other tabs are connected to each other. The fuses 10 and 30 have different shapes such as a non-bent tab 12c and a bent tab 32d.
The insertion position is specified to prevent erroneous insertion.

[0036]

As is clear from the above description, when the fuse of the present invention is used, a sufficient holding area is secured in the holding case, the vertical dimension of the fuse itself is reduced, and the pressure connection state with the bus bar is reduced. In this case, the vertical dimension can be reduced, which can contribute to the miniaturization of the electric junction box. Further, by making the shape of the fuse itself symmetrical in the vertical direction, there is no need to pay attention to the direction of the fuse at the time of fuse insertion work, thereby improving workability.

Further, by appropriately bending the tab direction of the fuse, it is not necessary to align the female tabs provided on the bus bar in the same direction, and it is possible to ensure a high density of the bus bar circuit. Further, even in the case where multiple types of fuses having different capacities are connected to the same electrical connection box or the like, erroneous insertion can be prevented by making the tab directions different for each type.

In addition, since the fuse of the present invention has tabs protruding in the lateral direction, if the side faces of the holding case are arranged so as to face each other, the tabs located on the opposite sides of the different fuses are identical. Can be press-connected to the female tab, and a connection form similar to that of a multi-fuse can be realized with two fuses. Also, by bending any of the tabs of these fuses, the insertion location of the adjacent fuse can be determined, and erroneous insertion can be prevented.

[Brief description of the drawings]

FIG. 1 is a fuse according to a first embodiment of the present invention, (A) is a perspective view of a fuse and a bus bar, and (B) is a schematic view of a connection state.

FIG. 2A is a sectional view of a fuse according to the first embodiment,
(B) is an AA sectional view of (A).

FIG. 3 is an exploded perspective view of a fuse according to a modified example of the first embodiment.

4A and 4B show a case where the fuses of the first embodiment are connected in a multi-fuse manner, wherein FIG. 4A is a perspective view of a fuse and a bus bar, FIG. 4B is a schematic view of a connection state, and FIG. It is a top view.

FIGS. 5A and 5B show a modified example in the case of connecting in a multi-fuse manner, wherein FIG. 5A is a perspective view of a fuse and a bus bar, FIG. 5B is a schematic view of a connection state, and FIG. FIG. 4 is a schematic plan view when connected.

FIG. 6 is a fuse according to the second embodiment,
(A) is a perspective view, (B) is a schematic view of a connection state, and (C) is a schematic view of a connection state in an upside-down direction.

FIG. 7 is a fuse according to a modification of the second embodiment, (A) is a perspective view, (B) is a schematic view of a connection state,
(C) is a schematic diagram of a connection state of upside down direction.

FIG. 8 is a fuse according to a third embodiment,
(A) is a perspective view of a fuse and a bus bar, (B) is a schematic view of a connection state, and (C) is a schematic plan view.

FIG. 9 is a schematic plan view showing a connection example of a fuse of each shape.

FIG. 10 is a schematic plan view when the fuse of the third embodiment is connected in a multi-fuse manner.

FIG. 11 is a schematic view showing a connection state of a conventional fuse.

FIG. 12 is a schematic diagram showing a connection state of a conventional fuse having a reduced vertical dimension.

13A and 13B show another conventional fuse in which the vertical dimension is reduced, wherein FIG. 13A is a perspective view and FIG. 13B is a schematic view of a connection state.

14A and 14B are other conventional fuses having reduced vertical dimensions, wherein FIG. 14A is a perspective view and FIG. 14B is a schematic view of a connected state.

FIG. 15 is a schematic view of a conventional multi-fuse in which a tab protrudes from a lower surface of a holding case;
(B) is a schematic diagram of a type in which the vertical dimension is reduced.

[Explanation of symbols]

10, 10 ', 20, 20', 30, 30 ', 30 "
Fuses 11, 11 ', 21, 21', 31, 31 ', 31 "
Holding case 12c, 12c '22c, 22c', 32c, 32d
Tabs 60, 70, 80 Busbars 51, 61, 62, 63, 71, 72, 81-88 Female tabs 51a, 61a, 62a, 63a Press-contact slot Z Insulating plate

Claims (6)

[Claims] 1. A fusing portion formed by punching a conductive metal plate and an input / output terminal continuous from both ends of the fusing portion are molded with an insulating resin around the fusing portion with a space provided therebetween, Along with molding the holding case, the tabs that are connected to the female tabs of the bus bar by pressure contact with the female tabs of the bus bar continuously from the respective ends of the input / output terminals are respectively protruded from both side surfaces of the holding case, and A fuse having a reduced size. 2. A fusing portion formed by punching a conductive metal plate and an input / output terminal continuous from both ends of the fusing portion are provided in a holding case made of an insulating resin at least around the fusing portion. At the same time, the tabs that are connected to the female tabs of the bus bar by pressure contact with the female tabs of the bus bar from both ends of the input / output terminals are projected from both sides of the holding case, and the overall height is reduced. A fuse characterized by being lowered. 3. The holding case and the tab are formed symmetrically with respect to a horizontal line passing through the center position in the vertical direction, and can be connected to the female tab of the bus bar from any of the upper and lower directions. Fuse as described in. 4. The fuse according to claim 1, wherein a tip of the tab is bent at a right angle to a front side or a rear side of the holding case. 5. A connection structure between a fuse and a bus bar, wherein a tab of the fuse is inserted into a press-contact slot of a female tab formed by bending a tip of the bus bar. While inserting the two fuses in a side-by-side orientation with the side surfaces of the holding cases facing each other, insert the tabs on the opposed side surfaces into the press-fitting slots of the same female tab, and separate the tabs on the other side surface respectively. A connection structure between a fuse and a bus bar, which is configured to reduce the number of female tabs for connecting a bus bar fuse by being inserted into a pressure contact slot of a female tab. 6. The tabs inserted into the press-contact slots of the same female tab are inserted one above the other, and the slot width of the press-contact slots is two times the thickness of the inserted tab.
6. The connection structure between a fuse and a bus bar according to claim 5, wherein the dimensions are set to correspond to the number of sheets.