CN1736011A - Fuse cavity structure and electric connection box - Google Patents
Fuse cavity structure and electric connection box Download PDFInfo
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- CN1736011A CN1736011A CN 200480002064 CN200480002064A CN1736011A CN 1736011 A CN1736011 A CN 1736011A CN 200480002064 CN200480002064 CN 200480002064 CN 200480002064 A CN200480002064 A CN 200480002064A CN 1736011 A CN1736011 A CN 1736011A
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Abstract
Fuse cavity structure includes fuses 10, 20 in which each of fusible elements 17, 27 for protecting a circuit from overcurrent is located between terminals 15 or 25, and a housing 59 in which the fuses 10, 20 are mounted; a part of a wall 65 of the housing 59 which partitions the fuse 10, 20 and fuse 10, 20 is removed thereby to form a notch 65 H in the wall 65; and space is proved between the fuses 10 or 20. The notch 65 H is formed by notching the wall 65 corresponding to at least a part of the fusible portion 17, 27.
Description
Technical field
The present invention relates to a kind of fuse cavity structure, wherein can the multiple fuse of attaching, carry out size and reduced, and carried out the improvement that generates about heat; And relate to a kind of electric connection box that is equipped with this fuse cavity structure.
The invention further relates to a kind of fuse cavity structure, it can be carried out size and reduces, and wherein can attaching and stably fix multiple fuse, and the invention still further relates to and have a kind of electric connection box with this fuse cavity structure.
Background technology
Fig. 7 shows an embodiment about the structure of traditional fuse attaching part, shown in the open 2002-124175 of uncensored Japan Patent.
The tab terminal is to 155 on they are attached to direction in the fuse attaching part 120, and the housing 153 that insulate certainly is outstanding, and it has constituted first fuse 150.The tab terminal that constitutes first fuse 150 inserts and is coupled in the fuse insertion portion 123 155.
And, opposite side terminal 121 is provided in fuse insertion portion 123.The tab terminal is connected to this opposite side terminal 121 to 155.And, for the first fuse insertion portion 123 provides first brake component 125.This first brake component 125 forms the insertion position of being convenient to adjust first fuse 150.
And second fuse 110 is built as, and flat terminal is to 111 both sides that are provided at insulation shell 113 respectively, and the spacing between the flat terminal 111 have with 155 pairs of tab terminals between the identical size of spacing.Second fuse 110 can be inserted in the fuse insertion portion 123.
And, for fuse insertion portion 123 provides second brake component 126.This second brake component 126 forms to be convenient to adjust the insertion position of second fuse 110 and to be used in flat terminal 111 is connected to opposite side terminal 121.In fuse insertion portion 123, can attaching first fuse 150 or second fuse 110.
And, as other correlation technique, for example, there is the block heat release structure that is used for the electric function part, the heat that wherein generates in shell chamber can guarantee to be discharged into the outside, shown in the open 2000-3654 of uncensored Japan Patent.
And, there is a kind of splicing ear that heat generates element that is used for, it has good heat release performance; With the connecting circuit body, when involving the element that heat generates,, when being connected to the circuit of forming by the bus that is provided for distributing board (wiring plate), used this element such as the PTC element, disclose shown in the flat 8-7961 as uncensored Japan Patent.PTC means " positive temperature coefficient ".
And, there is a kind of electric connection box, the heat release that it is carried out about the electric lead of the internal circuit that is connected to heat maker (such as fuse or relay) discloses shown in the flat 8-154327 as uncensored Japan Patent.
And, also have the heat release structure of electric connection box, it has good heat release effect and can not cause the increase of cost, and its to make size reduce be feasible, shown in the open 2000-115956 of uncensored Japan Patent.
And, also there is a kind of electric connection box, it keeps separator by using terminal, can effectively the heat release that generates in the electric connection box be arrived the electric connection box outside, shown in the open 2003-339109 of uncensored Japan Patent.
And, also have a kind of electric connection box, its can be effectively with the heat release that generates by the electric part that is installed on the printed circuit board (PCB) to the electric connection box outside, disclose shown in the 2000-198395 as uncensored Japan Patent.
And, the heat release structure that also has a kind of electric connection box, wherein the heat that is generated by electrical terminal can be discharged into the electric connection box outside effectively, has prevented the increase of the temperature in the electric connection box thus, shown in the open 2000-208177 of uncensored Japan Patent.
And, also there is a kind of undersized controller switching equipment, it has remarkable heat release performance, shown in the open 2000-272443 of uncensored Japan Patent.
And, also there is a kind of electric connection box, it can need not provide ventilation hole to the outside with the heat release of electric connection box inside in electric connection box, and do not need to make the size of electric connection box to become big and change material, shown in the open 2000-308236 of uncensored Japan Patent.
In traditional fuse attaching part-structure shown in Figure 7, in the situation that the fusible elements of fuse 110 fuses, there is not any problem under low relatively current value.Yet, in the situation of the fuse 110 that has used its fusible elements under high relatively current value, to fuse, when the fusible elements of fuse 110 is fused, have such misgivings, i.e. the harmful effect that fuse attaching part 120 is had on the calorifics.
Fig. 8 shows another example of traditional fuse housing, shown in the open 2002-313212 of uncensored Japan Patent.
Low clearance fuse (not shown) is attached to fuse housing 220.Fuse housing 120 is formed for comprising a left side and right side wall 222,223 and preceding and back protective bulkhead 224,225.An a pair of left side and right side wall 222,223 are arranged on a left side and the right side of the fuse shell of being made by the insulating resin that constitutes fuse and clamp narrow width segments.Before and back protective bulkhead 224,225 be placed between a left side and the right side wall 222,223, and cover the wide degree surface partly of the preceding and rear side of fuse shell, and each of preceding and back protective bulkhead all has wide width and low height.
As another conventional art, there is a kind of fuse, it can strengthen the balance support that the fuse attaching is partly located, make fuse attaching part microminiaturized, improve the workability of inserting operation, and prevent because the deformation and the breakage of the fusible portion that external force causes disclose shown in the 2001-325874 as uncensored Japan Patent.
And, there is a kind of fuse box, it can strengthen the balance support that the fuse attaching is partly located, and makes the microminiaturization of fuse attaching part and improves the workability that fuse inserts operation, shown in the open 2001-351502 of uncensored Japan Patent.
And, the structure of fuse attaching part is disclosed, it has the compatibility of the different fuses that are provided with of attaching arbitrarily, and it can improve the workability that fuse inserts operation, as uncensored Japan Patent openly shown in the 2002-124175.
As a kind of improvement vehicle to be attached to, technology such as the fuse box of automobile, have a kind of fuse box, it can guarantee to detect the rear side that the vane type fuse is inserted in the fuse chamber of fuse box, discloses shown in the flat 4-52351 as uncensored Japanese Utility Model.
Yet the fuse that traditional fuse housing shown in Figure 8 is not arranged to unshowned low clearance stably is fixed in the fuse housing 220, and what therefore expected is to improve this problem.
The accompanying drawing summary
Fig. 1 shows the decomposition diagram according to an embodiment of the fuse cavity structure of the first embodiment of the present invention and electric connection box;
Fig. 2 shows the longitudinal direction profile according to the fuse cavity structure of the first embodiment of the present invention and electric connection box;
Fig. 3 shows the explanatory diagram according to the fuse cavity structure and the electric connection box of the first embodiment of the present invention;
Fig. 4 show according to a second embodiment of the present invention fuse cavity structure and the decomposition diagram of the embodiment of electric connection box;
Fig. 5 show according to a second embodiment of the present invention fuse cavity structure and the longitudinal direction profile of electric connection box;
Fig. 6 show according to a second embodiment of the present invention fuse cavity structure and the explanatory diagram of electric connection box;
Fig. 7 shows the decomposition diagram of an embodiment of traditional fuse attaching part-structure;
Fig. 8 shows the plane graph of another example of traditional fuse housing.
Summary of the invention
Consider top problem, one object of the present invention is to provide a kind of fuse cavity structure, even wherein in the situation of the fuse that has used its fusible elements to fuse under high relatively current value, also can carry out the improvement that generates about heat; With a kind of electric connection box that is equipped with this fuse cavity structure is provided.
Another object of the present invention is to provide a kind of can be stably the fixedly fuse cavity structure of fuse and a kind of electric connection box with this fuse cavity structure.
To achieve these goals, according to first aspect present invention, provide a kind of fuse cavity structure, having comprised: fuse wherein is used for the fusible elements that protective circuit prevents overcurrent and is placed between the terminal; With the housing that this fuse has been installed, a part of housing wall of wherein separating fuse is removed, and forms recess thus in this wall, and the space occurs between fuse.
Thus, the heat that is generated by the fusible elements of fuse can not be subjected to stopping of wall, but discharges by air.Therefore, prevented to generate the appearance that housing is applied the shortcoming of adverse effect from the heat of fuse in advance.
According to a second aspect of the invention, provide a kind of fuse cavity structure, wherein in fuse cavity structure,, formed recess by to wall fluting corresponding at least a portion fusible elements according to first aspect.
Thus, when applying overcurrent and the fusible elements between terminal between the terminal at fuse and fused, the heat that is generated by fusible elements is directly released in the air layer, has improved the heat release effect of housing thus.
According to a third aspect of the invention we, provide a kind of electric connection box, wherein used fuse cavity structure according to first aspect or second aspect.
Thus, provide electric connection box with good heat release effect.
In order to reach previously described purpose, according to a forth aspect of the invention, provide a kind of fuse cavity structure, it comprises the housing of fuse and assembling fuse, wherein fuse device headed portion and anchor clamps bonding part, and groove corresponding to this head part and anchor clamps bonding part is provided in housing.
Be provided with according to this, owing in housing, provide corresponding to the head part of fuse and the groove of anchor clamps bonding part, so this fuse can stably be assembled in the housing.And when using the low clearance fuse, the head part of fuse is contained in the groove of housing, and therefore the head part of fuse is placed in the housing.Like this, can provide microminiaturized fuse cavity structure.
According to a fifth aspect of the invention, a kind of fuse cavity structure is provided, wherein, in fuse cavity structure according to a first aspect of the invention, wide degree part corresponding to the fuse head partial width is provided at the groove place, and provides corresponding to fuse anchor clamps bonding part narrow width segments width, that be narrower than head part at the groove place.
Be provided with according to this, fuse can guarantee to be attached to the groove that provides in housing.And, make the width of anchor clamps bonding part be narrower than fuse head width partly.Like this, when by means of such as the anchor clamps of fuse extractor with attaching when the fuse of groove is transferred to, for example, may engage with the head part and the anchor clamps bonding part that constitute fuse at its tip portion such as the anchor clamps of fuse extractor.Like this, can easily attaching be transferred to from housing in the fuse of housing.
According to a sixth aspect of the invention, a kind of fuse cavity structure is provided, wherein, in according to the fuse cavity structure aspect the of the present invention the 4th or the 5th, another fuse with the setting that is different from this fuse is provided in housing, replacing this fuse, and provide at the groove place and to be used to make this another fuse can under normal condition, be assembled to the localization part of housing.
According to this setting, at least two class fuses, promptly this fuse and other fuses at least can be attached to housing.For example, in recent years, requirement can make multiple fuse be attached in the housing, and can reduce management cost by using public part, reduces the cost of part thus.Thus, when having the different a plurality of fuses that are provided with when being configured to be attached to housing, part can be by shared, and therefore can reduce the cost of part.
According to a seventh aspect of the invention, provide a kind of fuse cavity structure, wherein, in fuse cavity structure according to a sixth aspect of the invention, localization part is formed conical surface, and in the side surface part office of this another fuse, corresponding to this conical surface, provide inclined surface.
According to this setting, when these other fuses were assembled in the housing, the inclined surface that provides in the side surface part office of these other fuses was aimed at the conical surface of the groove of housing, and these other fuses can guarantee to be fixed to housing thus.And, have with the fuse of the different setting of these other fuses and can guarantee to be fixed to the groove of housing, and can not be subjected to the influence of conical surface of the groove of housing.
According to an eighth aspect of the invention, provide a kind of fuse cavity structure, wherein used fuse cavity structure according to the four～the eight aspect of the present invention.
Be provided with according to this, can provide can a kind of stable assembling fuse electric connection box.And, when according to the of the present invention the 3rd or the fuse cavity structure of fourth aspect when being applied to this electric connection box, can provide and can assemble the electric connection box that at least two classes have the different fuses that are provided with.
Realize optimum way of the present invention
First embodiment
Below, by with reference to the accompanying drawings, with first embodiment that describes in detail according to fuse cavity structure of the present invention and electric connection box.
Fig. 1 shows the decomposition diagram according to first embodiment of fuse cavity structure of the present invention and electric connection box, Fig. 2 shows the longitudinal sectional drawing of fuse cavity structure and electric connection box, and Fig. 3 shows the explanatory diagram of fuse cavity structure and electric connection box.
Each part of major part among each figure is illustrated as schematic diagram, and it is partly simplified, and makes the major part easy to understand observe with being easy to thus.And for first fuse 10 and second fuse 20, for convenience's sake, overlapping part put together to make an explanation.
Two class fuses, promptly first fuse 10 and second fuse 20 can be attached to the fuse attaching part 70 in the housing 59 of blocks 50.First fuse 10 is different from second fuse 20 for example bearing electric current, shape etc. in form.And, as the fuse that can be attached to blocks 50, there is for example multiple vane type fuse, it can be corresponding to 5A～30A.
And, stairstepping anchor clamps mating part 14a is provided in the insulation shell 11 of first fuse 10, it is corresponding to the guiding end such as the anchor clamps (not shown) of fuse extractor, and attaching can be transferred to from fuse attaching part 70 easily in first fuse 10 of fuse attaching part 70 thus.Anchor clamps mating part 14a is formed and comprises head part 13 and projection 14 at least.And first fuse 10 also is called as short fuse or small size fuse 10.
Because first fuse 10 is the small size fuses that are shorter than second fuse 20, therefore, as shown in Figure 3, then be not easy to first fuse 10 be transferred to from blocks 50 with hand in case first fuse is attached in the blocks 50.First fuse 10 or second fuse 20 are transferred to from blocks 50 such as the anchor clamps (not shown) of fuse extractor by using.
And, stairstepping anchor clamps mating part 24a is provided in the insulation shell 21 of second fuse 20, it is corresponding to the guiding end such as the anchor clamps (not shown) of fuse extractor, and attaching can be transferred to from fuse attaching part 70 easily in second fuse 20 of fuse attaching part 70 thus.Anchor clamps mating part 24a is formed and comprises head part 23, lateral parts 24 and groove 24b at least, and this groove 24b provides between head part 23 and lateral parts 24.And second fuse 20 is called as, for example, and miniature fuse 20.
Consider the state of the fusible elements 17,27 of formation fuse 10,20, it is to provide in seating part 11a, the 21a of insulation shell 11,21, for but whether the fusible elements 17,27 that forms a prompt judgement in the mode of checking is in the step mode connection status or judges whether fusible elements 17,27 fuses and whether be in not "on" position, insulation shell 11,21 is made by transparent or translucent synthetic resin material.
And, in order to be easy to check the amperage of the electric current that each fuse 10,20 can be corresponding, and in order to prevent shortcoming in advance such as each fuse 10,20 of wrong attaching, with dyestuff, add in the synthetic resin material of insulation shell 11,21 such as weld or orchil, and the insulation shell 11,21 of formation fuse 10,20 can be distinguished mutually.
Flat terminal 15 that provides for first fuse 10 and the tab terminal 25 that provides for second fuse 20 are formed vane type terminal 15,25.And, for the guiding end 16,26 of terminal 15,25, provide wide inclined surface 16a, 26a and narrow inclined surface 16a, 26a.Wide inclined surface 16a, 26a is provided for utilizing the guiding end 16,26 of each terminal 15,25 when each terminal 15,25 inserts and is attached in the U-shaped terminal 30, and brute force is widened each free terminal 32 of U-shaped terminal 30.
Each U-shaped terminal 30 comprises that moveable arm is to 31, and it can the vane type terminal 15,25 that provide for fuse 10,20 be provided between it; Shaped form retaining part 33, it is to provide in the inside of moveable arm to 31 guiding end 32, but and be connected to the vane type terminal at them at 15,25 o'clock with step mode, guarantee vane type terminal 15,25 is inserted between it; Insert to keep space 35, it is to provide between moveable arm is to 31 guiding end 32, and vane type terminal 15,25 is inserted into wherein, and vane type terminal 15,25 is fixed by it; Approximate U-shaped lay space 37, vane type terminal 15,25 is positioned at wherein; With base part 39, moveable arm extends to this part to 31.These parts divide 41 as the electric contacting part that forms the bus (not shown).
As for bus, for example, there is such bus, wherein in a bus body (not shown), disposed a plurality of electric contacting parts and divided 41, perhaps there is such bus, wherein only provides electric contacting part to divide 41 in an end of a bus body (not shown).
Moveable arm is used as free terminal 32 to each guiding end 32 of 31, and it can open and close when moveable arm 31 will remain between it for the vane type terminal 15,25 that fuse 10,20 provides.And, because U-shaped terminal 30 guarantees to keep the vane type terminal 15,25 of each fuse 10,20, but and be connected to vane type terminal 15,25 with step mode, so it also is called as and keeps terminal 30.
Each terminal the 15,25, the 30th is by punching press with suppress that flat metal material forms.In carrying out such as zinc-plated surface-treated situation, improved the corrosion resistance of terminal 30 to terminal 30.Therefore, even in the at high temperature heated situation of terminal 30 that the heat that generates causes, still prevented the corrosion of terminal 30 owing to each fuse 10,20 fusing the time.
Each fuse 10,20 and U-shaped terminal 30 attached blockss 50 comprise at least: tabular base part 51, and a plurality of fuse attaching parts 70 that provide on this base part 51, it has constituted housing 59.A plurality of fuse attaching parts 70 are by the rectangular box shape peripheral wall 60 that forms housing 59 and according to approximately equalised interval the partition wall 65 that this peripheral wall 60 is divided into a plurality of parts to be formed.
And, by constituting each sidewall 61,62,63,64 and partition wall 65 of peripheral wall 60, but in fuse attaching part 70, provide the seating part 72 of attaching first fuse 10 or second fuse 20.And, for seating part 72, provide opening portion 71, the first fuses 10 or second fuse 20 to insert wherein.The fuse attaching part 70 that comprises seating part 72 also is called as the connector chamber.
For each opening portion 71 of the fuse attaching part 70 that constitutes by each sidewall 61,62,62,64 and each partition wall 65, inclined lead surface 71a, 71b are provided.These inclined lead surfaces 71a, 71b are provided for easily first fuse 10 or second fuse 20 are attached in the fuse attaching part 70 of housing 59.
And, when first fuse 10 inserts and is attached in the fuse attaching part 70, the coupling part 65C of the partition wall 65 by fuse attaching part 70 and inwall 61N, the 62N of fuse attaching part 70, the insulation shell 11 of first fuse 10 is directed and is inserted under the separation state in the fuse attaching part 70.Thus, fuse 10 is attached under the separation state in the fuse attaching part 70.
And, brake portion 75 is provided, it stops the operation that enters of first fuse 10 when first fuse 10 inserts and is attached in the fuse attaching part 70, and first fuse 10 is placed in the fuse attaching part 70.
And the sidewall that forms on the longitudinal direction of blocks 50 has abreast formed inwall 61N, 62N along sidewall to 61,62 to 61,62 inside.And, between a sidewall 61 and another sidewall 62, provide partition wall 65 perpendicular to this inwall 61N, 62N.
By the sidewall that on the longitudinal direction of blocks 50, forms to 61,62, along sidewall to inwall 61N, the 62N of 61,62 parallel formation and connect sidewall 61 and 62 and be connected a terminal 65A and another terminal 65B of the partition wall 65 of inwall 61N and 62N, formed seating part 78, U-shaped terminal 30 insert and attaching in wherein.As shown in Figure 2, the insertion port 78a of U-shaped terminal 30 from opening portion 71 opposite sides inserts and is attached to (Fig. 3) the seating part 78.
And the sidewall that forms on the longitudinal direction of blocks 50 provides the groove 80 corresponding to first molten 10 and second fuse 20 to 61,62 inside.This groove 80 comprises right side vertical component 81 and step shape part 82.As shown in Fig. 2 and 3, the step shape part 82 of groove 80 comprises corresponding to the wide part 82A of the head part 13 of first fuse 10 with corresponding to the narrow part 82B of the projection 14 of first fuse 10.
Corresponding to the side surface 13e of the head part 13 of first fuse 10, for the wide part 82A of the step shape part 82 of groove 80 provides side surface 83e; And corresponding to the end surface 13f of the head part 13 of first fuse 10, for the wide part 82A of the step shape part 82 of groove 80 provides end surface 83f.And, corresponding to the side surface 14g of the projection 14 of first fuse 10, for the narrow part 82B of the step shape part 82 of groove 80 provides side surface 83g; And corresponding to the end surface 14h of the projection 14 of first fuse 10, for the narrow part 82B of the step shape part 82 of groove 80 provides end surface 83h.And, corresponding to the inclined surface 24c of the lateral parts 24 of second fuse 20, for the narrow part 82B of the step shape part 82 of groove 80 provides inclined surface 83c, 83d.
When first fuse 10 is attached in the fuse attaching part 70 of housing 59, the brake area 75b that an end surface 11b (Fig. 3) of the insulation shell 11 of first fuse 10 reaches with the brake portion 75 of fuse attaching part 70 contacts, and has stopped the insertion of 10 pairs of fuse attachings of first fuse part 70 thus.
And, when second fuse 20 is attached in the fuse attaching part 70 of housing 59, inclined surface 83c, 83d (Fig. 3) that the inclined surface 24c (Fig. 1 and 2) of the lateral parts 24 of second fuse 20 reaches with the step shape part 82 of fuse attaching part 70 contact, and have stopped the insertion of 20 pairs of fuse attachings of second fuse part 70 thus.
For the material of blocks 50, used thermoplasticity synthetic resin, and blocks 50 is based on, and injection molding method with remarkable mass production capabilities forms with remarkable crystallized ability.And this blocks is called as fuse block or fuse board.
As shown in fig. 1, fuse cavity structure according to an embodiment of the invention comprises at least: fuse 10,20 wherein is used for each fusible elements 17,27 that protective circuit prevents overcurrent and is placed in terminal between 15 or 25; A plurality of housings 59 of molten 10,20 wherein have been installed.
In order to separate fuse 10 or 20 and the fuse 10 or 20 that is attached to blocks 50, in the housing 59 of blocks 50, provide partition wall 65.And a part of partition wall 65 of housing is removed, and provides recess 65H for partition wall 65 thus.The recess 65H of partition wall 65 is as through hole, and its seating part 72 with adjacent fuse attaching part 70 is communicated with.Can provide recess 65H for the short sidewall 63,64 of housing 59.
And, when each first fuse 10 is attached in the housing 59 of blocks 50, in the housing 59 of blocks 50, between the insulation shell 11 of first fuse 10, provide space 66 (Fig. 3).
Be used in the situation of electric connection box 1 at this fuse cavity structure, when the fusible portion 17 of first fuse 10 fuses owing to overcurrent, generation is not subjected to the stopping of partition wall 65 in the housing 59 from the heat of the fusible portion 17 of first fuse 10, but is released by the air in the space 66.Therefore, prevented to generate the appearance that the partition wall 65 of housing 59 is applied the shortcoming of adverse effect from the heat of high temperature of first fuse 10 in advance.
As shown in fig. 1, partition wall 65 has, the notch part 65H of through hole shape recess; And coupling part 65C, be used to connect the inwall 61N and the 62N that are positioned at these partition wall 65 both sides.For example, do not provide in the housing (59) therein in the situation of fuse heat release structure of any partition wall (65), when carrying out the safeguarding of electric connection box 1, contact U-shaped terminal (30) in the housing (59) unintentionally such as the metal of instrument (not shown), there are such misgivings thus, shortcoming promptly occurs such as short circuit.Yet,, therefore easily avoided appearance such as the shortcoming of short circuit because the coupling part 65C of the partition wall 65 that is used to separate fuse attaching part 70 and fuse attaching part 70 is provided.
The recess 65H of partition wall 65 forms by the partition wall 65 of excision corresponding to the part of the fusible portion 17 (Fig. 3) of first fuse 10.In the face of the partition wall 65 of the part of the fusible portion 17 of first fuse 10 cut.In the situation of this fuse cavity structure, when applying fusible portion 17 between overcurrent and the terminal 15 between the terminal 15 at first fuse 10 by fusing, the heat of fusible portion 17 is directly released in the air layer, has improved the heat release effect of housing 59 thus.Therefore, avoided the housing 59 of the blocks 50 that forms by thermoplasticity synthetic resin to be subjected to the infringement of heat.
And, as shown in Figure 3, in the situation of such fuse cavity structure, promptly wherein under first fuse 10 inserts and is attached to state in the housing 59 of blocks 50, between the coupling part 65C of the insulation shell 11 of first fuse 10 and partition wall 65, provide small gap, and insulation shell 11 does not contact with this coupling part 65C, and the heat that the fusible portion 17 in the seating part 11a of insulation shell 11 generates when fusing directly is not sent to the coupling part 65C of partition wall 65.Therefore, partition wall 65 is difficult to be subjected to the influence of heat.
For first fuse 10, even (for example, 10A or more) fuse or be used for 20A or the situation of the fuse 10 of bigger big electric current has still avoided the partition wall 65 of the housing 59 of blocks 50 to be exposed to high temperature corresponding to high relatively current value having used.
Even be configured in thick and fast in the situation of housing 59 of blocks 50, produce yet because the shortcoming that heat causes can be used the blocks 50 with miniature and compact size thus at the short fuse 10 that is used for big electric current.
Because the mounting structure of top small size fuse 10 has been dealt carefully with the heat that generates from fuse 10, therefore can use the blocks of making by thermoplasticity synthetic resin 50 for a long time and it can deformation.And, by top fuse cavity structure is applied to electric connection box 1, can provide electric connection box 1 with remarkable heat release effect.
Second embodiment
By with reference to the accompanying drawings, with second embodiment that explains in detail according to fuse cavity structure of the present invention and electric connection box.
Fig. 5 shows the decomposition diagram according to second embodiment of fuse cavity structure of the present invention and electric connection box, Fig. 6 shows according to the fuse cavity structure of this embodiment and the longitudinal sectional drawing of electric connection box, and Fig. 7 shows the explanatory diagram according to fuse cavity structure and the electric connection box of this embodiment.
In order to make the major part easy to understand of each figure, partly each part is shortened, be illustrated as the schematic diagram that is easy to watch thus.For convenience's sake, explain first fuse 10, second fuse 20 identical part together with the first embodiment of the present invention.
As shown in Fig. 5～7, fuse cavity structure according to the present invention is set to comprise low clearance vane type fuse 10 and the block-shaped main body 50 with housing 59, in housing 59, has assembled low clearance vane type fuse 10.This low clearance fuse 10 is assembled in each fuse attaching part 70 of the housing 59 that constitutes block-shaped main body 50.Each the fuse attaching part 70 that constitutes the housing 59 of block-shaped main body 50 also is configured to assemble in each at it other fuses 20 of other high altitude.
And, provide inclined lead surface 65D in opening portion 71 sides of partition wall 65.Inclined lead surface 65D is provided as making win fuse 10 or second fuse 20 can easily be attached to the fuse attaching part 70 of housing 59.
The wide part 82A of the step shape part 82 of groove 80 is provided in opening portion 71 sides of the fuse attaching part 70 of housing 59.And, the narrow part 82B of the step shape part 82 of groove 80 is provided in seating part 72 sides as housing 59 fuse attaching parts 70 inboards.And, straight portion 81 is provided, make its width be narrower than the narrow part 82B of step slot 80, and extend to the insertion port 78a that is used for U-shaped terminal 30 from the narrow part 82B of step shape part 82.The straight portion 81 of groove 80 is provided corresponding to the terminal 15,25 of fuse 10,20.
When low clearance fuse 10 is attached to the fuse attaching part 70 of housing 59, an end surface 11b shown in Figure 7 of the insulation shell 11 of low clearance fuse 10 is close proximity to the brake area 75b of the brake portion 75 of fuse attaching part 70, has stopped the insertion operation of 10 pairs of fuse attachings of first fuse part 70 thus.
Each inside at 59 two sidewalls of housing 61,62, head part 13 and anchor clamps bonding part 14a corresponding to low clearance fuse 10, groove 80 with step shape part 82 is provided, and low clearance fuse 10 can stably be assembled to the fuse attaching part 70 of housing 59 thus.
And, when low clearance fuse 10 was assembled to the fuse attaching part 70 of housing 59, two end portion 13c of the head part 13 of low clearance fuse 10 and two end portion 14c of anchor clamps bonding part 14a were placed in the step shape part 82 of groove 80 of housing shown in Figure 7 59 fully.The head part 13 that is assembled to the low clearance fuse 10 of housing 59 is placed in the housing 59 fully.
When other fuses 20 of high altitude were assembled to the fuse attaching part 70 of housing 59, the head part 23 of these other fuses 20 was outstanding from the opening portion 71 of the fuse attaching part 70 of housing 59.On the contrary, in being placed in the low clearance fuse 10 of housing 59, the head part 13 of fuse 10 is not outstanding from the opening portion 71 of the fuse attaching part 70 of housing 59, but is placed in fully in the peripheral wall 60 of shell 59.Low clearance fuse 10 is inserted in the seating part 72 of fuse attaching part 70 fully.
Like this, when low clearance fuse 10 is assembled to the fuse attaching part 70 of housing 59, be provided with microminiaturized fuse cavity structure.Therefore, can provide microminiaturized fuse cavity structure.
Shown in Fig. 6 and 7, at step shape part 82 places of groove 80, the width 13A corresponding to the part 13 of low clearance fuse 10 provides wide part 82A.And, at step shape part 82 places of groove 80, be narrower than the width 14B of the anchor clamps bonding part 14a of low clearance fuse 10 head part 13 corresponding to width, narrow part 82B is provided.The configuration direction of the fuse the when direction of " width " in the present specification means a plurality of fuses 10 or 20 shown in Fig. 5～7 and is attached to the fuse attaching part 70 of housing 59.
When two sidewalls, 61,62 inside at housing 59 provided the groove 80 with this stairstepping setting, low clearance fuse 10 can guarantee to be attached to the groove 80 that provides in housing 59.And, make the width 14B of anchor clamps bonding part 14a be narrower than the width 13A of low clearance fuse 10 head part 13.Therefore, when the low clearance fuse 10 that will be attached to groove 80 by means of the anchor clamps (not shown) such as the fuse extractor is extracted, for example, the anchor clamps such as unshowned fuse extractor may engage with the head part 13 and the anchor clamps bonding part 14a that constitute low clearance fuse 10 at its tip portion.
Therefore, even be placed in fully in the peripheral wall 60 of housing 59 at low clearance fuse 10, and the head part 13 of low clearance fuse 10 is not from the opening portion 71 of the fuse attaching part 70 of housing 59 outstanding the time, by using the anchor clamps of unshowned fuse extractor, the low clearance fuse 10 of attaching also can easily be extracted from housing 59 in the seating part 72 of housing 59.
When step shape part 82 places at housing 59 each groove 80 provide this localization part 83c, 83d, at least two class fuses 10,20, that is, other fuses 20 of low clearance fuse 10 and high altitude at least can be attached to the fuse attaching part 70 of single housing 59.For example, in recent years, requirement can be attached to housing 59 with the fuse 10,20 with multiple capacity, and by using the management cost of public part minimizing part, reduces the cost of part thus.Thus, when having the different a plurality of fuses 10,20 that are provided with when being configured to be attached to single housing 59, part can be by shared, and therefore can reduce the cost of part.
The localization part 83c, the 83d that provide at step shape part 82 places of the groove 80 of housing 59 are formed conical surface 83c, 83d shown in Figure 7 respectively.The first conical surface 83c that constitutes localization part 83c, 83d is set to inclined surface, the side surface 83g of the end surface 83f of the wide part 82A of its connection step slot 80 and narrow part 82B.And the second conical surface 83d that constitutes localization part 83c, 83d is set to inclined surface, the end surface 83h of the narrow part 82B of its connection step slot 80 and the straight portion 81 of groove 80.At each lateral parts 24 place of these other fuses 20, conical surface 83c, 83d corresponding to shown in Fig. 5～7 provide inclined surface 24c.
When other molten 20 when being attached to the fuse attaching part 70 of housing 59, inclined surface 24c shown in Fig. 5 and 6 of these other fuse 20 lateral parts 24 is close proximity to conical surface 83c, the 83d shown in Figure 7 of the step shape part 82 of fuse attaching part 70, has stopped the insertion operation of 20 pairs of fuse attachings of these other fuses part 70 thus.
When these other fuses 20 were assembled to housing 59, the inclined surface 24c that provides at lateral parts 24 places of other fuses 20 aimed at conical surface 83c, the 83d of the groove 80 of housing 59, and as shown in Figure 7, these other fuses 20 can guarantee to be fixed to housing 59 thus.The inclined surface 24c that provides at these other molten 20 lateral parts 24 places is close proximity to conical surface 83c, the 83d of the groove 80 of housing 59, thus this other fuses 20 location and be fixed to housing 59.
Do not provide inclined surface owing to have the head part 13 of low clearance fuse 10 of the setting different and each among the 14a of anchor clamps bonding part with these other fuse 20, therefore low clearance fuse 10 can guarantee to be fixed to the step shape part 82 of the groove 80 of housing 59, and can not be subjected to the conical surface 83c of the groove 80 of housing 59, the influence of 83d.
Although when low clearance fuse 10 is assembled to the fuse attaching part 70 of housing 59, depend on the inclined degree of this low clearance fuse, but when low clearance fuse 10 is assembled to the fuse attaching part 70 of housing 59 when tilting, it for example is the Tb part or the Tc part of partition wall 65 corner parts that the insulation shell 11 of small size fuse 10 can contact, and can be inserted into the seating part 72 of fuse attaching part 70.
And, although when other fuses 20 of high altitude are assembled to the fuse attaching part 70 of housing 59, depend on the inclined degree of these other fuses, but when other fuses 20 of high altitude are assembled to the fuse attaching part 70 of housing 59 when tilting, for example, the tip portion 26 of the terminal 25 of miniature fuse 20 can contact Tj part or the Tk part of the localization part 83d of the step shape part 82 that forms groove 80, and therefore can be inserted into the straight portion 81 of groove 80.
Like this, when other fuses 20 of low clearance fuse 10 or high altitude are assembled to the fuse attaching part 70 of housing 59, anticipate that fuse 10 or 20 is assembled to the fuse attaching part 70 of housing 59 with multiple insertion angle tilt the time.Yet, in this case, because fuse 10 or 20 is the fuse attaching parts 70 that are assembled to housing 59 by the groove 80 of the sidewall 61,62 of housing 59 or by partition wall 65 guiding of housing 59 time, therefore can prevent the generation of such phenomenon, promptly the moveable arm part 31 of the U-shaped terminal 30 that connects with electrically conducting manner with the terminal 15 of fuse 10 or 20 or 25 is bent, and has caused the terminal 15 or 25 problems with the coupled situation between the U-shaped terminal 30 of fuse 10 or 20 thus.
When the electric connection box 1 that previously described fuse cavity structure is applied to shown in Fig. 5～7, can provide the electric connection box 1 that to stablize assembling low clearance fuse 10.And, when previously described fuse cavity structure is applied to electric connection box 1, can provides and can stablize the electric connection box 1 that assembling at least two classes have the different fuses 10,20 that are provided with.
In electric connection box 1, laid multiple Electrical and Electronic part, such as the electronic unit (not shown).This electronics link box 1 is as being connected to for example the junction box of each electric lead of automobile (J/B).And this electric connection box can be as for example electrical relaybox (R/B).
As indicated above, according to first aspect present invention, the heat that is generated by the fusible elements of fuse can not be subjected to stopping of wall, but discharges by air.Therefore, prevented that in advance the heat generation of fuse from applying the appearance of the shortcoming of adverse effect to housing.
According to a second aspect of the invention, when fusible elements when fusing that applies between the terminal at fuse between overcurrent and the terminal, the heat of this fusible elements is directly released in the air layer.Therefore, can improve the heat release effect of housing.
According to a third aspect of the invention we, can provide a kind of electric connection box with remarkable heat release effect.
As indicated above, according to a forth aspect of the invention, owing in housing, provide corresponding to the head part of fuse and the groove of anchor clamps bonding part, so this fuse can stably be assembled in the housing.And when using the low clearance fuse, the head part of fuse is placed in the groove of housing, and therefore the head part of fuse is placed in the housing.Like this, can provide microminiaturized fuse cavity structure.
According to a fifth aspect of the invention, fuse can guarantee to be attached to the groove that provides in housing.And, make the width of anchor clamps bonding part be narrower than fuse head width partly.Like this, when by means of anchor clamps, such as the fuse extractor with attaching when the fuse of groove is transferred to, for example, may engage with the head part and the anchor clamps bonding part that constitute fuse at its tip portion such as the anchor clamps of fuse extractor.Like this, can easily attaching be transferred to from housing in the fuse of housing.
According to a sixth aspect of the invention, at least two class fuses, promptly this fuse and other fuses at least can be attached to housing.For example, in recent years, requirement can make multiple fuse be attached in the housing, and can reduce management cost by using public part, reduces the cost of part thus.Thus, when having the different a plurality of fuses that are provided with when being configured to be attached to housing, part can be by shared, and therefore can reduce the cost of part.
According to a seventh aspect of the invention, when other fuses were assembled in the housing, the inclined surface that provides in the side surface part office of these other fuses was aimed at the conical surface of the groove of housing, and these other fuses can guarantee to be fixed to housing thus.And, have with the fuse of the different setting of these other fuses and can guarantee to be fixed to the groove of housing, and can not be subjected to the influence of conical surface of the groove of housing.
According to an eighth aspect of the invention, can provide a kind of electric connection box that can stablize the assembling fuse.And, when according to the of the present invention the 6th or the fuse cavity structure of the 7th aspect when being applied to this electric connection box, can provide a kind of and can assemble the electric connection box that at least two classes have the different fuses that are provided with.
Claims (12)
1. fuse cavity structure comprises:
Fuse, fusible elements that provides between terminal is provided for it, is used for protective circuit and prevents overcurrent; With
Housing, it holds described fuse, and described housing has notch part, and it is to limit so that adjacent fuse holding portion is interconnected by a part of outer wall that excises described housing.
2. the fuse cavity structure of claim 1, wherein said recess is positioned at and the corresponding position of the described fusible elements of at least a portion.
3. electric connection box comprises:
Fuse cavity structure comprises:
Fuse, fusible elements that provides between terminal is provided for it, is used for protective circuit and prevents; With
Housing, it holds described fuse, and described housing has notch part, and it is to limit so that adjacent fuse holding portion is interconnected by a part of wall that excises described housing.
4. the electric connection box of claim 1, wherein said recess is positioned at and the corresponding position of the described fusible elements of at least a portion.
5. fuse cavity structure comprises:
Fuse, it has head part and anchor clamps bonding part; With
Housing, it holds described fuse, has the groove corresponding to described head part and described anchor clamps bonding part in this housing.
6. the fuse cavity structure of claim 1, wherein said groove have corresponding to the wide part of the described head part width of described fuse with corresponding to the described anchor clamps bonding part width of described fuse, are narrower than the narrow part of described head part.
7. the fuse cavity structure of any one in the claim 5 or 6, wherein said groove has localization part, be used for being contained in described housing when replacing described fuse, make this another fuse to be assembled to described housing with predetermined state at another fuse with setting different with described fuse.
8. the fuse cavity structure of claim 7, wherein said localization part is configured as conical surface, and the inclined surface that provides corresponding to described conical surface in its side surface part office is provided this another fuse.
9. electric connection box comprises:
Fuse cavity structure comprises:
Fuse, it has head part and anchor clamps bonding part; With
Housing, it holds described fuse, has the groove corresponding to described head part and described anchor clamps bonding part in this housing.
10. the electric connection box of claim 9, wherein said groove have corresponding to the wide part of the described head part width of described fuse with corresponding to the described anchor clamps bonding part width of described fuse, are narrower than the narrow part of described head part.
11. the electric connection box of any one in claim 9 or 10, wherein said groove has localization part, be used for being contained in described housing when replacing described fuse, make this another fuse to be assembled to described housing with predetermined state at another fuse with setting different with described fuse.
12. the fuse cavity structure of claim 11, wherein said localization part is configured as conical surface, and the inclined surface that provides corresponding to described conical surface in its side surface part office is provided this another fuse.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003101286A JP4001835B2 (en) | 2003-04-04 | 2003-04-04 | Fuse cavity structure and electrical junction box |
| JP101286/2003 | 2003-04-04 | ||
| JP105208/2003 | 2003-04-09 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1736011A true CN1736011A (en) | 2006-02-15 |
| CN100593890C CN100593890C (en) | 2010-03-10 |
Family
ID=33465129
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200480002064A Expired - Fee Related CN100593890C (en) | 2003-04-04 | 2004-04-02 | Fuse cavity structure and electric connection box |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP4001835B2 (en) |
| CN (1) | CN100593890C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105225901A (en) * | 2015-11-06 | 2016-01-06 | 安徽江淮汽车股份有限公司 | A kind of fuse attachment structure and diagnose interface protective device |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103380477B (en) | 2011-02-18 | 2016-01-13 | 矢崎总业株式会社 | Fuse and fuse attachment structure |
| JP7119946B2 (en) * | 2018-11-27 | 2022-08-17 | 株式会社デンソー | Electronic component module |
-
2003
- 2003-04-04 JP JP2003101286A patent/JP4001835B2/en not_active Expired - Fee Related
-
2004
- 2004-04-02 CN CN200480002064A patent/CN100593890C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105225901A (en) * | 2015-11-06 | 2016-01-06 | 安徽江淮汽车股份有限公司 | A kind of fuse attachment structure and diagnose interface protective device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2004311148A (en) | 2004-11-04 |
| CN100593890C (en) | 2010-03-10 |
| JP4001835B2 (en) | 2007-10-31 |
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Granted publication date: 20100310 |