JP5587394B2 - Protective cover mounting structure for the battery direct mounting fusible link unit - Google Patents

Description

  The present invention relates to a mounting structure for a protective cover of a fusible link unit (also called a battery fuse) that is directly attached to a battery post.

  When a fusible link unit for distributing power to the load side is directly attached to the battery of an automobile, cover at least the part directly connected to the battery post via the battery terminal with a protective cover made of resin after installation. Yes.

  For example, in Patent Document 1, a protective cover having such a role is attached to a box body that accommodates a fusible link via a hinge, and the protective cover is rotated when necessary, thereby protecting the protection target portion. The technique covered with is disclosed.

  In addition, as shown in FIG. 5, there is also known one that attaches and fixes a protective cover 130 covering the upper surface of the fusible link unit 110 to the fusible link unit 110 using a claw-shaped lock portion 132.

Japanese Patent Laid-Open No. 10-338085 JP 2002-358867 A

  By the way, when attaching a protective cover to a fusible link unit using a hinge like the technique of the said patent document 1, a part of hinge component must not be provided in the housing of the fusible link unit. The configuration is complicated. In addition, since the fusible link unit and the protective cover must be connected in advance by the hinge, the assembly becomes troublesome. In general, the resin material that forms the housing of the fusible link unit is often added with an increased amount of talc or glass filler in consideration of the heat resistance when the fuse element is blown. , Tending to be susceptible to bending deformation, and parts that are susceptible to local bending deformation, such as components of hinges, may be partly insufficient in strength if formed integrally with the housing of the fusible link unit. There is. Therefore, there is a need for molding with an expensive resin having high strength and heat resistance instead of a normal inexpensive resin, and there is a problem that the cost tends to increase.

  5 has a problem that the protective cover 130 cannot be accurately attached to the fusible link unit 110 unless the position where the lock portion 132 is engaged is carefully checked.

  In consideration of the above circumstances, the present invention has a simple structure, improves the workability of attaching the protective cover, and protects the battery direct-mounted fusible link unit that enables the housing of the fusible link unit to be manufactured with ordinary resin. An object is to provide a cover mounting structure.

The invention according to claim 1, the upper surface, the first terminal portion is connected through a battery terminal to the battery post and a second terminal portion is provided which terminals with electric wires which extended the wire downward is connected huge An attachment structure of a protective cover that is covered from above when the Bull Link unit is directly attached to the battery, and the upper cover portion that covers the upper surface of the fusible link unit, the battery post, and the battery terminal is provided on the protective cover. provided with, and hanging on the periphery of the upper surface cover portion, the first terminal portion and the terminal with the second terminal portion connected to the plurality of the electric wires, the plurality of which extends downward is connected to the respective terminals and an upper wire, provided integrally with the side cover portion covering the wire receiving groove, together for housing the electric wires provided on the fusible link unit, said fusible The slide unit is provided with a slide guide groove that guides the side cover part while regulating the position of the side edge part of the side cover part downward when the protective cover is placed on the link unit from above. A guide portion is provided for facilitating insertion of the lower end of the side edge portion of the cover portion into the slide guide groove, and the guide portion is formed as an inlet with the upper end of the slide guide groove widened outward. It is characterized by.

A second aspect of the present invention is a protective cover mounting structure for a battery direct-attachable fusible link unit according to the first aspect , comprising a plurality of the side cover portions, and at least one of the side cover portions is the protective cover. It is characterized by being provided integrally with the upper surface cover portion .

The invention according to claim 3, a protective cover mounting structure of the battery attaching directly fusible link unit according to claim 1, the lower side surface of the first terminal portion of the fusible link unit and the second terminal portion An electric wire receiving groove for receiving an electric wire extending downward from the terminal with electric wire, and the electric wire stored in the electric wire receiving groove is projected to the outside at the tip of the side wall of at least one of the electric wire receiving grooves. The protruding piece as the electric wire restricting portion to be restricted is formed by bending.

According to the first aspect of the present invention, if the protective cover is simply put on the fusible link unit, the side cover portion of the protective cover is guided into the slide guide groove of the fusible link unit, so that the positioning is ensured. However, it is possible to easily attach the protective cover in place. Therefore, the workability of attaching the protective cover can be improved. Further, in the mounted state, the upper surface cover portion covers the first terminal portion and the second terminal portion on the upper surface of the fusible link unit and the entire connection portion to the battery post, and the side surface cover portion is the fusible link unit. Since the terminal with the electric wire exposed on the side of the wire, the upper part of the electric wire, and the electric wire accommodation groove for accommodating the electric wire are covered together (simultaneously), the exposed portions of the terminal and the electric conductor can be safely covered with the protective cover. Further, since the side cover portion is provided integrally with the protective cover, just covered with a protective cover from the top, it can be covered simultaneously by side cover section necessary part of the side surface of the fusible link unit. Therefore, even when the space on the side of the battery is narrow and the operator cannot put his / her hand on the battery wire mounting side, the side cover portion can be attached and detached.

  In general, the resin material that forms the housing of the fusible link unit is often added with an increased amount of talc or glass filler in consideration of the heat resistance when the fuse element is melted. Although it tends to be vulnerable to deformation, the present invention adopts a simple configuration in which a slide guide groove is formed in the fusible link unit, and does not provide a portion on which excessive force is applied such as a hinge. There is no worry of insufficient strength. Therefore, the housing of the fusible link unit can be configured with a normal inexpensive resin without selecting a heat-resistant and high-strength resin.

  In particular, the lower end of the side edge portion of the side cover portion can be easily inserted into the slide guide groove by the action of the guide portion as the entrance where the upper end of the slide guide groove is widened outward. Even if it is slightly displaced or the protective cover is slightly inclined, the lower end of the side edge of the side cover can be smoothly inserted into the slide guide groove, and the protective cover can be easily attached to the fusible link unit. Can be attached to. Actually, in the engine room, the protective cover is put on the fusible link unit fixed to the battery, so the protective cover is often put in an unreasonable posture, but the protective cover is fusible with an approximate register. If the cover unit is placed on the link unit, the side cover part is automatically guided to the slide guide groove by the action of the guide part, so that it is very easy to attach the protective cover.

According to the second aspect of the present invention, a plurality of side cover portions are provided, and at least one of the side cover portions is integrally provided on the upper surface cover portion of the protective cover. Necessary portions on the side surface of the bull link unit can be simultaneously covered by the side surface cover portion provided integrally with the upper surface cover portion .

  According to invention of Claim 3, once an electric wire is accommodated in an electric wire accommodation groove | channel, it can stop so that an electric wire may not jump out by the effect | action of the protrusion as an electric wire control part provided in the side wall of an electric wire accommodation groove | channel. . For example, especially in the case of a thick wire, if it receives a large bending force due to bending or vibration due to the vehicle layout, it will be easy to jump out even if it is housed in the wire housing groove, and it will be easy to place a heavy burden on the wire crimping part. However, according to the present invention, it is possible to regulate the jumping out of the electric wire from the electric wire receiving groove by the function of the electric wire regulating portion, so that it is prevented that the electric wire jumps out and prevents the cover from being attached when covering the protective cover. This improves the work of attaching the cover.

In embodiment of this invention, it is a perspective view which shows the state which attached the fusible link unit before covering a protective cover directly to the battery. It is a perspective view which shows the state in the middle of covering a protective cover on a fusible link unit. It is sectional drawing which cut | disconnected the state of FIG. 2 in the position with a slide guide groove. It is a perspective view which shows the state which covered the protective cover completely on the fusible link unit. It is a perspective view which shows the example of the attachment structure of the conventional protective cover.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  1 is a perspective view showing a state in which the fusible link unit is directly attached to the battery before covering the protective cover, FIG. 2 is a perspective view showing a state in the middle of covering the protective cover on the fusible link unit, and FIG. FIG. 4 is a perspective view showing a state in which the protective cover is completely covered on the fusible link unit.

  As shown in FIG. 1 and FIG. 2, the structure of this embodiment includes a first terminal portion 8E connected to the battery post 2 via the battery terminal 3 on the upper surface, and electric wires W (WA, WA, WC) on the lower side. , WE) when the fusible link unit 10 provided with the second terminal portions 8A, 8B, 8C, and 8E to which the terminals 20A, 20B, 20C, and 20E with the wires are connected is directly attached to the battery 1. This is a mounting structure of the protective cover 30 covered from above.

  Here, the 1st terminal part 8E is an input terminal part connected to the battery post 2 via the battery terminal 3, and serves also as the 2nd terminal part which connects the terminal 20E with starter electric wire WE. Other 2nd terminal part 8A, 8B, 8C is an output terminal part connected to electric wire WA, WB, terminal 20A, 20B, 20C with WC connected to the load side.

  These input terminal portions and output terminal portions are configured by erecting bolts on input terminal pieces and output terminal pieces (not shown) formed on one bus bar 7 (partially shown in FIG. 3). . The input terminal piece and the output terminal piece are press-molded on a single bus bar 7 connected via a fuse element (not shown). With the input / output terminal portion and the fuse element exposed, a bolt or The fusible link unit 10 is configured as a whole by molding a necessary portion of the bus bar 7 by resin molding.

  The second terminal portions 8A, 8B, 8C, the first terminal portion 8E, and the like are provided on the upper surface of the resin housing 11 of the fusible link unit 10 with the front ends of the bolts facing upward. Also, around the second terminal portions 8A, 8B, and 8C, there are cylindrical walls 15A, 15B, and 15C that form terminal accommodating recesses 16A, 16B, and 16C for inserting the terminals with electric wires 20A, 20B, and 20C from above. Projected.

  These cylindrical walls 15A, 15B, and 15C have openings in portions facing the side of the housing 11, and positioning recesses 16a, 16b, and 16c that are shifted from each other in a part of the circumferential direction. These positioning recesses 16a, 16b, and 16c are provided so as not to make a mistake in attaching positions of the terminals 20A, 20B, and 20C with electric wires, and are provided on the peripheral edges of the respective disk portions of the terminals 20A, 20B, and 20C with electric wires. It engages with a convex portion (not shown).

  A pair of side walls 12 and 12 extending in the up-down direction protrude from the side surface (lower side of the second terminal portion) of the housing 11 in which the openings of the cylindrical walls 15A, 15B, and 15C are arranged. The pair of side walls 12, 12 are arranged with an interval corresponding to the outermost position of the three cylinder walls 15 </ b> A, 15 </ b> B, 15 </ b> C arranged side by side. A partition wall 14 is provided to form 17A, 17B, and 17C. A pair of side wall 12 and the partition 14 are arrange | positioned in the position corresponding to the left-right side edge of opening of cylinder wall 15A, 15B, 15C, and are formed continuously with each cylinder wall 15A, 15B, 15C, respectively. Accordingly, the wire receiving grooves 17A, 17B, and 17C and the terminal receiving recesses 16A, 16B, and 16C are communicated with each other.

  In addition, a slide guide groove 13 extending linearly in the vertical direction is provided on the opposing surfaces of the pair of side walls 12 and 12. The upper end of each slide guide groove 13 is formed as an inlet 13a that is wide on the outer side, and the inner surface of the inlet 13a serves as a guide portion to be described later. Moreover, the upper end edge connected to the cylinder walls 15A, 15B, 15C of the side wall 12 and the partition wall 14 is cut obliquely in a chamfered shape, and the inclined portions 12a, 14a serve as guide portions to be described later. As shown in FIG. 3, the position of the upper edge and the angle of inclination are set so that the upper edge of the inlet 13a of the slide guide groove 13 is located above the extended line of the inclined portion 12a (14a). Has been. Further, the step inside the inlet 13a is also inclined so as to be easily guided.

  In addition, on the side surface of the adjacent housing 11 that is orthogonal to the side surface to which the output-side terminals 20A, 20B, and 20C are attached, the wire-receiving groove 19 for storing the starter-wire-equipped terminals 20E and the wires WE. A pair of side walls 18 are provided. At one lower end of these side walls 18, an electric wire restricting portion 18 a for preventing the electric wire WE accommodated in the electric wire accommodating groove 19 from jumping out is provided. The electric wire restricting portion 18 a is configured by a protruding piece bent in an L shape at the tip of one side wall 18, and the electric wire WE is inserted into the electric wire receiving groove 19 from the gap between the protruding piece and the other side wall 18. It is now possible to force fit.

  On the other hand, the protective cover 30 includes an upper surface cover portion 31 that covers the upper surface of the fusible link unit 10, the battery post 2 and the battery terminal 3, a peripheral wall portion 32 that is continuously provided downward on the periphery thereof, and a peripheral edge of the upper cover portion 31. The terminals 20A, 20B, 20C, 20E with wires connected to the first terminal portion 8E or the second terminal portions 8A, 8B, 8C, (8E) and the terminals 20A, 20B, Side cover parts 33 and 34 which cover the upper part of electric wires WA, WB, WC, and WE connected to 20C and 20E and extending downward.

  The above-described slide guide groove 13 of the fusible link unit 10 has a side edge portion of the side cover portion 33 as shown in FIGS. 2 and 3 when the protective cover 30 is put on the fusible link unit 10 from above. The inner surface of the inlet 13a of the slide guide groove 13 and the inclined portions 12a and 14a in the vicinity thereof are formed at the lower end of the side edge portion of the side cover portion 33 with the slide guide groove 13. It functions as a guide for facilitating insertion. That is, the guide portion is formed between the inner surface of the inlet 13a of the slide guide groove 13 and the inclined portions 12a and 14a in the vicinity thereof, and the lower end J of the inlet 13a of the slide guide groove 13 is the lower end K of the inclined portions 12a and 14a. It is set to be located on the lower side.

  Next, the operation will be described.

  When the fusible link unit 10 is attached to the battery 1, the first terminal portion 8 </ b> E of the fusible link unit 10 is connected to the battery post 2 via the battery terminal 3 as shown in FIG. 1. At that time, the terminal 20E with the starter wire is simultaneously fastened to the first terminal portion 8E, and the starter wire WE is inserted into the wire receiving groove 19. Further, the terminals 20A, 20B, 20C with electric wires on the output side are connected to the second terminal portions 8A, 8B, 8C for output, and the electric wires WA, WB, WC extending downward from the respective terminals 20A, 20B, 20C are respectively connected. Insert into the wire receiving grooves 17A, 17B, 17C.

  After the fusible link unit 10 is directly attached to the battery 1 as described above, as shown in FIGS. 2 and 3, the protective cover 30 is covered from above. In this case, if the protective cover 30 is simply put on the fusible link unit 10, both side edges of the side cover portion 33 of the protective cover 30 are inserted into the slide guide grooves 13 of the fusible link unit 10 and guided. Therefore, it is possible to easily attach the protective cover 30 to a fixed position while reliably positioning. Accordingly, the workability of attaching the protective cover 30 can be improved.

  In particular, the fusible link unit 10 is provided with an inlet 13a that functions as a guide portion and inclined portions 12a and 14a. By the action of these guide portions, the side edge of the side cover portion 33 with respect to the slide guide groove 13 is provided. Since the lower end of the portion can be easily inserted, even if the position where the protective cover 30 is covered is slightly shifted or the protective cover 30 is slightly inclined, the side of the side cover portion 33 smoothly enters the slide guide groove 13. The lower end of the edge can be inserted, and the protective cover 30 can be easily attached to the fusible link unit 10.

  Actually, since the protective cover 30 is put on the fusible link unit 10 fixed to the battery 1 in the engine room, the protective cover 30 is often put in an unreasonable posture. If the cover 30 is put on the fusible link unit 10, the side cover 33 is automatically guided to the slide guide groove 13 by the action of the guide portion, so that the protective cover 30 is attached very much. It becomes easy and workability improves.

  Further, in the mounted state, the upper surface cover portion 31 covers the entire connection portion to the first terminal portion 8E and the second terminal portions 8A, 8B, 8C and the battery post 2 on the upper surface of the fusible link unit 10, Since the side cover portions 33 and 34 cover the upper portions of the terminals 20A, 20B, 20C, and 20E with electric wires and the electric wires WA, WB, WC, and WE exposed on the side surfaces of the fusible link unit 10, the terminals 20A, 20B, and 20C are covered. , 20E and the conductor exposed portions of the electric wires WA, WB, WC, and WE can be safely covered with the protective cover 30.

Further, since the side cover portions 33 and 34 are provided integrally with the upper surface cover portion 31 of the protective cover 30, a necessary portion on the side surface of the fusible link unit 10 can be covered by simply covering the protective cover 30 from above. 33 and 34 can be covered together (simultaneously) . Therefore, the side cover portions 33 and 34 can be attached and detached even when the space on the side of the battery 1 is narrow and the operator cannot put his / her hand on the wire mounting side of the battery 1.

  In general, the resin material forming the housing 11 of the fusible link unit 10 is often used with an added amount of talc or glass filler in consideration of heat resistance when the fuse element is blown. However, in this embodiment, a simple structure in which the slide guide groove 13 is formed in the fusible link unit 10 is adopted, and a portion where an excessive force such as a hinge is applied is used. Since it is not provided, there is no worry of insufficient strength. Therefore, the housing 11 of the fusible link unit 10 can be made of a normal inexpensive resin without selecting a heat-resistant and high-strength resin.

  Moreover, since the electric wire control part 18a is provided in the side wall 18 of the electric wire accommodation groove 19 for the starter electric wire WE which is a thick wire, once the electric wire WE is accommodated in the electric wire accommodation groove 19, the electric wire restriction part 18a The electric wire WE can be stopped so as not to jump out by working. For example, in the case of a starter electric wire WE that is a thick electric wire, if it receives a large bending force due to bending or vibration due to the vehicle layout, it will be easy to jump out even if it is accommodated in the electric wire accommodating groove 19, Although a large burden is likely to be applied, according to the present embodiment, the electric wire regulating portion 18a can regulate the jump-out of the electric wire WE from the electric wire receiving groove 19, thereby reducing the burden on the electric wire crimping portion. Therefore, the reliability can be improved.

  The same effect can be obtained when the structure of the wire restricting portion 18a is provided in another wire receiving groove (17A, 17B, 17C) other than the wire receiving groove 19.

DESCRIPTION OF SYMBOLS 1 Battery 2 Battery post 3 Battery terminal 8A, 8B, 8C 2nd terminal part 8E 1st terminal part (it also serves as 2nd terminal part)
DESCRIPTION OF SYMBOLS 10 Fusible link unit 11 Housing 12 Side wall 12a Inclined part (guidance part)
13 Slide guide groove 13a Inlet (guide part)
14a Inclined part (guidance part)
17A, 17B, 17C Wire receiving groove 18 Side wall 18a Protruding piece (wire restricting portion)
19 Electric wire receiving groove 20A, 20B, 20C, 20E Terminal with electric wire 30 Protective cover 31 Top cover portion 33 Side cover portion 34 Side cover portion W Electric wire WA, WB, WC Output side electric wire WE Starter wire J Slide guide groove entrance Lower end K Lower end of the inclined part

Claims (3)

A fusible link unit having a first terminal connected to a battery post via a battery terminal and a second terminal connected to a terminal with an electric wire extending from below is directly connected to the battery. It is a protective cover mounting structure that is covered from the top when attached,
The protective cover is provided with an upper surface cover portion that covers the upper surface of the fusible link unit and the battery post and the battery terminal, and the first cover portion and the second terminal are suspended from a peripheral edge portion of the upper surface cover portion. a plurality of the terminals with electric wires connected to the part, and wire receiving groove for accommodating the upper portion of the plurality of electric wires extending downward is connected to the respective terminals, the electric wires provided on the fusible link unit, provided integrally with the side cover portion covering together,
When the fusible link unit is covered with the protective cover from above, a slide guide groove is provided for guiding the side edge of the side cover portion while lowering the position.
At the entrance of the slide guide groove or in the vicinity thereof, a guide part is provided for facilitating insertion of the lower end of the side edge of the side cover part into the slide guide groove,
A structure for attaching a protective cover for a battery direct-attachable fusible link unit, wherein the guide portion is formed as an inlet with an upper end of the slide guide groove widened outward. A protective cover mounting structure for a battery direct-mounted fusible link unit according to claim 1,
A protective cover mounting structure for a battery direct-attachable fusible link unit, comprising a plurality of the side cover parts, and at least one side cover part of which is integrally provided on an upper surface cover part of the protective cover. A protective cover mounting structure for a battery direct-mounted fusible link unit according to claim 1 ,
In the fusible link unit, on the lower side surface of the first terminal portion and the second terminal portion, there is provided an electric wire receiving groove for receiving an electric wire extending downward from the terminal with electric wire, and at least one of the electric wire receiving grooves A battery direct-attachable fusible link unit protection, characterized in that a protruding piece as a wire restricting portion for restricting the electric wire accommodated in the wire accommodating groove from jumping out is bent at the end of the side wall. Cover mounting structure.

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