JP6117162B2 - Battery terminal - Google Patents

Description

  The present invention relates to a battery terminal that is attached to a battery and relays power supply from the battery.

  Conventionally, power supply from a battery in a vehicle to a circuit is often performed via a battery terminal (see, for example, Patent Document 1).

  FIG. 7 shows a fuse unit having an example of a conventional battery terminal. The fuse unit 5 shown in FIG. 7 is directly attached to the rod-like electrode 62 protruding from the terminal attachment surface 61 in the battery 6, and has a battery terminal 51 and a fusible link 52. FIG. 8 shows an exploded view of the fuse unit shown in FIG.

  The battery terminal 51 is a terminal having a substantially rectangular shape in plan view, and an electrode insertion hole 511 through which the rod-shaped electrode 62 in the battery 6 is inserted is provided on one end side in the longitudinal direction. A screw 512 for connecting the battery terminal 51 and the fusible link 52 is provided on the other end side in the longitudinal direction. The battery terminal 51 has a shape extending toward the outer edge 61 a of the terminal mounting surface 61 when connected to the rod-shaped electrode 62 of the battery 6.

  The fusible link 52 includes a power supply terminal 521, two circuit terminals 522, and a fusible body 523.

  A battery terminal 51 is connected to the power supply terminal 521, and electric power is supplied through the battery terminal 51. The power supply terminal 521 is provided with an insertion hole 521a through which the screw 512 of the battery terminal 51 is inserted. The battery terminal 51 is connected to the power feeding terminal 521 by fastening the nut 513 to the screw 512 inserted through the insertion hole 521a.

  A circuit that operates with electric power from the battery 6 is connected to each of the two circuit terminals 522. Each circuit terminal 522 is provided with a screw 522a for connecting, for example, a round terminal of an electric wire that forms a circuit.

  The fusible body 523 is formed by connecting the feeding terminal 521 and the two circuit terminals 522 in a band shape narrower than the feeding terminal 521 and the circuit terminal 522. In each circuit terminal 522, the current from the battery 6 flows from the power supply terminal 521 through the fusible element 523. And if the electric current more than a threshold value flows, the fusible body 523 will melt | fuse and it will prevent that an excessive electric current flows into a circuit.

  The fusible link 52 is formed by encapsulating (molding) a power supply terminal 521, two circuit terminals 522, and a fusible body 523 made of a conductive metal with an insulating resin material. The resin housing 524 made of an insulating resin material has a power supply terminal 521 and a circuit in a state where the connection surfaces of the power supply terminal 521 and the circuit terminal 522 are exposed and a window 524a is provided so that the melting of the fusible body 523 is visible. A part of each of the terminal 522 and the fusible body 523 is covered and hardened. The window 524a for visually confirming fusing is covered with a transparent cover 525, and the fusing of the fusible body 523 is visually recognized through the transparent cover 525.

JP 2011-187301 A

  Here, in the battery terminal 51, a load caused by a component load or the like is easily applied in the vicinity of a portion where other components such as the fusible link 52 are coupled. And depending on the magnitude | size of the load, high intensity | strength may be calculated | required by the battery terminal 51.

  Accordingly, it is an object of the present invention to provide a battery terminal with increased strength, focusing on the above problems.

In order to solve the above-mentioned problems, the invention according to claim 1 is directed to a terminal mounting surface in a battery on each of a pair of opposing plates formed by folding a band plate made of a conductive metal into a substantially U shape. An electrode insertion hole through which the rod-shaped electrodes protruding from the electrode are sequentially inserted, and when directly connected to the rod-shaped electrode, a terminal body having a shape extending toward the outer edge of the terminal mounting surface, and the pair The opposing plates are joined to each other on the side opposite to the folded portion when viewed from the electrode insertion hole, and joined in a state where they are in contact with each other and overlap each other, and the joining portions are the pair of opposing plates. has a battery terminal, characterized in that it is what was made form as solidified covered with an insulating resin material together with the opposite side.

According to a second aspect of the present invention, in the battery terminal according to the first aspect, a circuit terminal to which a circuit operated by electric power from the battery is connected, the terminal main body and the circuit terminal are connected to the terminal main body and A fusible body that is connected to a band that is narrower than the circuit terminal and that melts when a current equal to or greater than a threshold value flows, and the terminal body, the circuit terminal, and the fusible body are formed from a single sheet of conductive metal. Each of the circuit terminal and the fusible body is formed by being cut out integrally, so that the connection portion of the circuit terminal in the circuit terminal is exposed and the fusing of the fusible body is visible. It consists of the said insulating resin material which covered and hardened a part.

The invention according to claim 3 is the battery terminal according to claim 2, wherein the fusible body intersects the extending direction of the terminal body and extends only in the intersecting direction along the terminal mounting surface. Alternatively, it extends in both the extending direction and the intersecting direction so that the extending direction is shorter.

According to a fourth aspect of the present invention, in the battery terminal according to any one of the first to third aspects, one of the pair of opposed plates has a flat plate shape on the opposite side. And the other counter plate of the pair of counter plates has a shape on the opposite side extending in parallel with the one counter plate and then facing the one counter plate, and again with the one counter plate It extends in parallel and has a shape that is bent into a stepped shape that is in contact with and overlapped with the one opposing plate at the parallel portion.
According to a fifth aspect of the present invention, in the battery terminal according to the fourth aspect, a circuit terminal to which a circuit that operates by electric power from the battery is connected, the terminal body and the circuit terminal are connected to the terminal body and A fusible element that is connected to a band that is narrower than the circuit terminal and that melts when a current greater than or equal to a threshold value flows, wherein the one counter plate is connected to the terminal body of the pair of counter plates. It is a counter plate which is sometimes on the terminal mounting surface side, and the fusible body is formed by being cut out integrally with the one counter plate.

  According to the first aspect of the present invention, the pair of opposing plates are joined in a state of being in contact with each other and overlapping on the side opposite to the folded portion when viewed from the electrode insertion hole. As a result, even if a load such as a component load is applied in the vicinity of the portion opposite to the folded portion, the load is distributed and supported by each of the pair of opposed plates. That is, according to the first aspect of the present invention, the strength of the battery terminal can be increased with respect to the load applied near the end as described above.

Further, according to the invention described in claim 1, a pair of opposed plates at the opposite side (as molded) covered compacted is together with insulation resin material. Thereby, a pair of opposing board can be joined still more firmly. Further, since the molded insulating resin material itself plays a role of supporting the load, the strength of the battery terminal can be further increased.

According to the invention described in claim 2 , the battery terminal is provided with a fuse function, and the terminal body, the circuit terminal, and the fusible body are integrally cut out from a single sheet of conductive metal. A fuse-integrated battery terminal that is reduced in size by being formed is realized. Then, molding of the pair of opposing plates is performed using an insulating resin material that molds a part of the circuit terminals and the fusible body. Thus, the molding of the moldings and the circuit terminals and the fusible element of the pair of opposed plates can be done at once, it is possible to reduce the manufacturing cost.

According to the invention described in claim 3 , the fuse-integrated battery terminal can be further reduced in size by the shape of the fusible body.

According to the invention described in claim 4 , one of the pair of opposing plates has a flat plate shape, and the other opposing plate has a shape bent in a step shape. As a result, the shapes of the terminal bodies are different from each other on the front and back sides. For example, when placing the terminal body in the mold for insert molding, it is difficult to cause misplacement in which the front and back directions are wrongly arranged. be able to. Further, the setting position of the insert molding machine can be positioned with reference to the portion bent in a step shape.

It is a perspective view of the battery terminal concerning a 1st embodiment. It is the top view and side view of a battery terminal which are shown by FIG. It is a perspective view of the structure which consists of a terminal main body, a circuit terminal, and a soluble body in the battery terminal shown by FIG. FIG. 4 is a plan view and a side view of the structure shown in FIG. 3. It is a perspective view of the battery terminal concerning a reference example . FIG. 6 is a plan view and a side view of the battery terminal shown in FIG. 5. It is a figure which shows the fuse unit which has an example of the conventional battery terminal. FIG. 8 is an exploded view of the fuse unit shown in FIG. 7.

  A battery terminal according to a first embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a perspective view of a battery terminal according to the first embodiment, and FIG. 2 is a plan view and a side view of the battery terminal shown in FIG. FIG. 2A shows a plan view, and FIG. 2B shows a side view. 3 is a perspective view of a structure including a terminal body, a circuit terminal, and a fusible body in the battery terminal shown in FIG. 1, and FIG. 4 is a plan view of the structure shown in FIG. It is a figure and a side view. FIG. 4A shows a plan view and FIG. 4B shows a side view.

  The battery terminal 1 of this embodiment is directly attached to the rod-shaped electrode 22 protruding from the terminal attachment surface 21 in the battery 2, and has a terminal body 11, a circuit terminal 12, and a fusible body 13.

  The terminal body 11 has a shape extending toward the outer edge 21 a of the terminal mounting surface 21 when connected to the rod-shaped electrode 22. As shown in FIG. 3, the terminal body 11 has a rod-like electrode 22 on each of a pair of opposing plates 111 and 112 formed by folding a conductive metal strip 11 ′ into a substantially U shape. Electrode insertion holes 113 and 114 that are sequentially inserted are provided and formed. In the terminal body 11, as shown in FIG. 3, of the pair of opposing plates 111 and 112, the other opposing plate 111 is not moved without moving one opposing plate 112 located on the lower side in the drawing. Is folded in the direction of the arrow D1 so as to go to the one opposing plate 112.

  The terminal body 11 is provided with a notch 116 extending from the electrode insertion hole 114 in the one opposing plate 112 to the electrode insertion hole 113 in the other opposing plate 111 through the U-shaped folded portion 115. Yes. The diameters of the electrode insertion holes 114 and 113 are reduced by reducing the width of the notch 116, and a tightening screw 14 for reducing the width of the notch 116 is provided inside the folded portion 115 of the terminal body 11. Is arranged. A square washer 15 is disposed between the screw head 14 a of the tightening screw 14 and the folded portion 115, and the tip of the tightening screw 14 is attached to the nut 16 disposed with the folded portion 115 sandwiched between the square washer 15. It is screwed. When the tightening screw 14 is tightened, the distance between the square washer 15 and the nut 16 is reduced. As a result, the width of the notch 116 is reduced, so that the electrode insertion holes 113 and 114 are reduced in diameter.

  The terminal body 11 is mechanically fixed to the rod-shaped electrode 22 by tightening the tightening screw 14 in a state where the rod-shaped electrode 22 is inserted into the electrode insertion holes 113 and 114 and reducing the diameter of the electrode insertion holes 113 and 114. Electrical connection is made. In the terminal body 11 attached in this way, the one opposing plate 112 faces the terminal attachment surface 21 of the battery 2.

  In the terminal body 11, a side wall 117 is folded from the other opposing plate 111 to the one opposing plate 112, and the side wall 118 is also folded from the one opposing plate 112 to the other opposing plate 111. It has been awakened. A concave portion 117a is provided on the side wall 117 of the other opposing plate 111, and a convex portion 118a that enters the concave portion 117a is provided on the side wall 118 of the one opposing plate 112. As shown in FIG. 2B, when the tightening screw 14 is tightened in the direction of the arrow D2, the square washer 15 also tries to rotate in the same direction. At this time, the side wall 117 of the other opposing plate 111 serves as a detent for the square washer 15. As a result, the side wall 117 is pushed by the square washer 15 and tries to move in the direction of the arrow D3, but the convex portion 118a of the side wall 118 of the one opposing plate 112 enters the concave portion 117a of the one side plate 112. Play a role to stop. Thereby, the deformation of the terminal body 11 when the tightening screw 14 is tightened is suppressed.

  Further, in the terminal body 11, the one opposing plate 112 has a flat plate 112 in the shape of the portion 112 a opposite to the folded portion 115 when viewed from the electrode insertion hole 114. In the other opposing plate 111, the shape of the portion 111a opposite to the folded portion 115 when viewed from the electrode insertion hole 113 is bent in a step shape as follows. That is, the shape of the opposite side portion 111a extends in parallel with one of the opposing plates 112, then bends 90 °, bends again toward one of the opposing plates 112, and extends in parallel with one of the opposing plates 112. The parallel part 111a-1 has a shape that is in contact with the one opposing plate 112 and overlapped.

  The circuit terminal 12 is a conductive metal square plate disposed substantially in parallel with the terminal mounting surface 21 of the battery 2, and is used for connecting a circuit (not shown) that is operated by power from the battery 2 to the circuit terminal 12. An insertion hole 121 through which the connection screw 17 is inserted is provided at the center. In the present embodiment, two circuit terminals 12 are provided. These two circuit terminals 12 are arranged so as to be substantially flush with the one opposing plate 112 in the terminal body 11. Further, the two circuit terminals 12 cross the extension direction D4 in front of the terminal body 11 and extend in the terminal direction 11 in the extension direction D4 in which the terminal body 11 extends toward the outer edge 21a of the terminal attachment surface 21. They are arranged in an intersecting direction D5 substantially parallel to the surface 21. For example, a round terminal attached to the tip of an electric wire extending from a circuit (not shown) is connected to each circuit terminal 12 through a connection screw 17 and tightened with a nut.

  Two fusible bodies 13 are provided so as to connect the terminal body 11 and each of the two circuit terminals 12 in a band shape narrower than the terminal body 11 and each circuit terminal 12. And each fusible body 13 will melt | fuse out when the electric current more than a threshold value flows. Each fusible body 13 first extends from the end of the terminal body 11 on the circuit terminal 12 side in the intersecting direction D5, bends approximately 90 ° and extends forward in the extending direction D4 to the circuit terminal 12. . And in each soluble body 13, the direction extended in the extending direction D4 is formed shorter than the part extended in the cross direction D5.

  In addition, as described with reference to FIG. 3, in the present embodiment, of the pair of opposing plates 111 and 112, the other opposing plate 111 positioned on the upper side in the drawing is directed toward the one opposing plate 112. Is folded in the direction of the arrow D1. The two fusible bodies 13 are provided continuously with the one opposing plate 112.

  And in the battery terminal 1 of this embodiment, the terminal main body 11, the two circuit terminals 12, and the soluble body 13 are integrally cut out and formed from the single plate of a conductive metal.

  Also, the battery terminal 1 is formed by covering (molding) an end portion of the terminal body 11 on the side of the soluble body 13, the two circuit terminals 12, and the soluble body 13 with an insulating resin material. The resin housing 18 made of an insulating resin material has a fusible body 13 in the terminal body 11 in a state in which a connection surface of each circuit terminal 12 is exposed and a window 181 is provided so that the fusing of the fusible body 13 is visible. A part of each of the end part on the side, the two circuit terminals 12 and the fusible body 13 is covered and consolidated. The resin housing 18 is integrally formed with the terminal body 11, the two circuit terminals 12, and the fusible body 13 by insert molding. The insert molding is performed in a state where the connection screw 17 is inserted into the insertion hole 121 of the circuit terminal 12. The window 181 for visually confirming fusing in the resin housing 18 is covered with a transparent cover 19, and the fusing of the fusible body 13 is visually recognized through the transparent cover 19.

  In the battery terminal 1 of this embodiment, a part of the resin housing 18 formed by insert molding is brought into contact with each other on the surfaces 111a and 112a on the opposite side of the folded portion 115 in the pair of opposing plates 111 and 112. It becomes the junction part 182 joined in the state which overlapped. A load such as a load of a circuit wire connected to the circuit terminal 12 is applied in the vicinity of the portions 111a and 112a opposite to the folded portion 115. At this time, since the portions 111a and 112a are in contact with each other and overlapped with each other by the joint portion 182, the load is supported by being distributed to the pair of opposing plates 111 and 112. It will be. That is, the battery terminal 1 of the present embodiment has increased strength against the above-described load.

  Moreover, according to the battery terminal 1 of this embodiment, a pair of opposing board 111,112 is molded together with an insulating resin material by insert molding in said opposite part 111a, 112a. Thereby, a pair of opposing board 111,112 can be joined still more firmly. In addition, since the molded insulating resin material itself plays a role of supporting the load, the strength of the battery terminal 1 is further increased.

  In addition, the battery terminal 1 of the present embodiment is provided with a fuse function, and the terminal body 11, the circuit terminal 12, and the fusible body 13 are integrally cut out from a single plate of conductive metal. Therefore, downsizing is also achieved. The pair of opposing plates 111 and 112 are molded using an insulating resin material that molds part of the circuit terminals 12 and the fusible body 13. Thereby, the molding of the pair of opposing plates 111 and 112 and the molding of the circuit terminals 12 and the fusible body 13 can be performed by one insert molding, and the manufacturing cost can be reduced.

  Further, the battery terminal 1 of the present embodiment is further reduced in size with respect to the fuse-integrated battery terminal due to the shape of the fusible body 13.

  Further, according to the battery terminal 1 of the present embodiment, one of the pair of counter plates 111, 112 has a flat plate shape, and the other counter plate 111 has a shape bent in a step shape. doing. As a result, the shapes of the terminal main bodies 11 are different from each other on the front and back sides. For example, when the terminal main body 11 is arranged in a mold for insert molding, an erroneous arrangement is made in which the front and back directions are arranged incorrectly. Can be difficult. Further, the setting position of the insert molding machine can be positioned with reference to the portion 111a bent in a step shape.

Next, a battery terminal according to a reference example will be described with reference to FIGS. FIG. 5 is a perspective view of a battery terminal according to a reference example , and FIG. 6 is a plan view and a side view of the battery terminal shown in FIG. FIG. 6A shows a plan view, and FIG. 6B shows a side view.

The battery terminal 3 according to this reference example is not given a fuse function like the battery terminal 1 of the first embodiment. When the fuse function is provided, for example, it is coupled to the fusible link 4 as shown in FIG. 8 or 7 using screws 41 and nuts 42.

  Similarly to the first embodiment, the battery terminal 3 is a terminal body in which a conductive metal strip is folded back in a substantially U shape, and electrode insertion holes 313 and 314 are provided in a pair of opposing plates 311 and 312, respectively. 31. Of the pair of opposing plates 311, 312, one opposing plate 312 located on the lower side in the figure has a flat plate shape in the portion 312 a opposite to the folded portion 315 when viewed from the electrode insertion hole 314. Yes. The other opposing plate 311 has a shape in which the shape of the portion 311a opposite to the folded portion 315 when viewed from the electrode insertion hole 313 is bent stepwise. That is, the shape of the opposite side portion 311 a extends in parallel with one counter plate 312, then bends 90 °, then bends 90 ° toward one counter plate 312, and extends in parallel with the one counter plate 312. The parallel part 311a-1 has a shape in which the counter plate 112 is in contact with and overlapped with one of the opposing plates 112.

  And in the parallel part 311a-1, a pair of nail | claw 311b extended from the other opposing board 311 is crimped in the state holding the one opposing board 312. FIG. In the present embodiment, the pair of claws 311b serve as a joining portion that joins the pair of opposing plates 311 and 312 in a state where they are in contact with each other at the portions 311a and 312a opposite to the folded portion 315 and overlap each other. Fulfill. Further, insertion portions 311c and 312b through which the screws 41 are inserted are provided in the overlapped portion.

  In addition, the attachment structure of the terminal body 31 to the rod-shaped electrode (not shown) is equivalent to the attachment structure of the terminal body 11 to the rod-shaped electrode 22 in the first embodiment described above. A fastening screw 34, a square washer 35, and a nut 36 are attached.

Even in the battery terminal 3 of the reference example described above, it goes without saying that the strength against the load is enhanced at the portion where the pair of opposing plates 311 and 312 contact each other and overlap each other.

Incidentally, implementation forms described above are only representative embodiments of the present invention, the present invention is not limited to these embodiments. That is, various modifications can be made without departing from the scope of the present invention. Of course, such modifications are included in the scope of the present invention as long as the configuration of the fuse unit of the present invention is provided.

  For example, in said 1st Embodiment, the battery terminal 1 of the form with which two circuit terminals were provided as an example of the battery terminal said to this invention, and one soluble body was provided for each circuit terminal was illustrated. Yes. However, the battery terminal with a fuse function provided with the circuit terminal and the fusible body is not limited to this form. For example, one or three or more circuit terminals may be provided. Further, when a plurality of circuit terminals are provided, the fusible body may not be provided at all of the plurality of circuit terminals, and the fusible body is provided only for the circuit terminals to which a circuit requiring protection by fusing is connected. It may be.

In addition, as an example of the fusible body according to the present invention that “extends in both the extending direction and the intersecting direction so that the extending direction is shorter”, in the first embodiment, the fusible body is bent 90 ° in the middle. The L-shaped fusible body 13 is illustrated, and in the reference example , the fusible body 33 having the L-shaped fusing parts 332 and 333 bent 90 ° in the middle is illustrated. However, the soluble body referred to in the present invention is not limited to these, and may be, for example, a meandering shape as long as the extending direction is shorter.

  Moreover, in 1st Embodiment, the square-plate-shaped circuit terminal 12 arrange | positioned substantially parallel to the terminal attachment surface 21 of the battery 2 is illustrated as an example of the circuit terminal said to this invention. However, the circuit terminal referred to in the present invention may be, for example, one that is disposed substantially parallel to a side surface orthogonal to the terminal mounting surface in the battery, or one that is bent into an L shape, for example. In other words, the circuit terminal referred to in the present invention is not limited to a specific arrangement or shape as long as it is a terminal to which a circuit that operates by power from the battery is connected.

DESCRIPTION OF SYMBOLS 1,3 Battery terminal 2 Battery 11,31 Terminal main body 11 'Band board 12 Circuit terminal 13 Soluble body 18 Resin housing 21 Terminal mounting surface 21a Outer edge 22 Rod-shaped electrode 111,112,311,312 Opposing plate 111a-1,311a-1 Parallel part 113,114,313,314, electrode insertion hole 182 joint part 311b nail | claw (an example of a junction part)
D4 Extension direction D5 Crossing direction

Claims (5)

An electrode insertion hole through which a rod-shaped electrode protruding from a terminal mounting surface in the battery is sequentially inserted is provided in each of a pair of opposing plates formed by folding a strip formed of a conductive metal into a substantially U shape, When directly connected to the rod-shaped electrode, a terminal body having a shape extending toward an outer edge of the terminal mounting surface;
The pair of opposing plates are joined to each other on the side opposite to the folded portion when viewed from the electrode insertion hole, and joined in a state of being in contact with each other and overlapping,
Battery terminal to which the junction, characterized in that the pair of opposed plates together at the opposite side has been made shaped as solidified covered with an insulating resin material. A circuit terminal to which a circuit that operates by electric power from the battery is connected;
A fusible body that connects the terminal body and the circuit terminal in a band shape narrower than the terminal body and the circuit terminal and melts when a current of a threshold value or more flows;
The terminal body, the circuit terminal, and the fusible body are formed by being integrally cut out from a single plate of conductive metal,
The insulating resin in which the joint portion covers and hardens a part of each of the circuit terminal and the fusible body so that a connection surface of the circuit in the circuit terminal is exposed and the fusing of the fusible body is visible. The battery terminal according to claim 1, wherein the battery terminal is made of a material. The fusible body intersects the extending direction of the terminal body and extends only in the intersecting direction along the terminal mounting surface, or the extending direction and the extending direction so that the extending direction is shorter. The battery terminal according to claim 2, wherein the battery terminal extends in both the intersecting direction and the battery terminal. One counter plate of the pair of counter plates has a flat plate shape on the opposite side,
The other counter plate of the pair of counter plates has the opposite shape extending in parallel with the one counter plate, then toward the one counter plate, and again extending in parallel with the one counter plate. The battery terminal according to any one of claims 1 to 3, wherein the parallel portion has a shape that is bent into a stepped shape that contacts and overlaps the one opposing plate. . A circuit terminal to which a circuit that operates by electric power from the battery is connected;
A fusible body that connects the terminal body and the circuit terminal in a band shape narrower than the terminal body and the circuit terminal and melts when a current of a threshold value or more flows;
The one opposing plate is an opposing plate that becomes the terminal mounting surface side when the terminal body is connected among the pair of opposing plates,
The battery terminal according to claim 4, wherein the fusible body is formed by continuously and integrally cutting with the one opposing plate.

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