JP5134493B2 - Fusible link for battery terminal installation - Google Patents

Description

  The present invention relates to a fusible link for attaching a battery terminal, which is disposed between a battery terminal of a vehicle such as an automobile and its output electric wire to prevent an overcurrent or a temperature rise during energization.

  In recent years, there has been an increasing need for fusible links for attaching battery terminals that integrate fuses (fusible links) in the vicinity of the battery as vehicle space constraints and wire harnesses are reduced for weight reduction (Patent Documents). 1. JP 2000-164111 A).

Under such circumstances, it has been required to reduce the size and weight of the battery fusible link itself. However, contrary to this, various optional functions have been added to increase the power capacity, and the fusible link for battery terminal installation itself also requires a high current input setting. And weight reduction has become more difficult.
JP 2000-164111 A

  The present invention improves the above-described conventional problems, that is, it is possible to reduce the size and weight without sacrificing the power capacity, or to increase the power capacity without requiring an increase in size. An object of the present invention is to provide a fusible link for battery terminal attachment that can be expanded.

  Here, the case portions made of resin are each provided with connection holes for electrical connection, and the two conductor plates connected via the fusible fuse portions are on the same plane and spaced apart from each other. FIG. 4 shows an example of a fusible link for battery terminal attachment that is housed.

  Fig.4 (a) is a front view which shows the bus bar as an insert. In this bus bar 11, a terminal connection conductor plate 11a that is in contact with a counterpart terminal and electrically connected to the counterpart terminal and a battery connection conductor plate 11a ′ connected to a battery terminal (not shown) are in the same plane. A bus bar that is connected to each other via a fusible fuse portion 11d with a gap (G) therebetween, and is perpendicular to the direction of the battery connection conductor plate 11a ′ (upward direction in the figure) to the terminal connection conductor plate 11a. An extension portion is provided which is formed to be extended and connected to the fusible fuse portion 11d. Further, connection holes 11b and 11b 'are provided in the terminal connection conductor plate 11a and the battery connection conductor plate 11a', respectively.

  FIG. 4B is a front view showing a fusible link D for attaching a battery terminal in which the bus bar 11 is integrally formed as an insert in a case portion 12 made of resin, and FIG. 4C is a view of FIG. 4B. It is sectional drawing in LL.

  A space 12a is provided in the vicinity of the connection hole 11b of the terminal connection conductor plate 11a of the case portion 12 of the battery terminal mounting fusible link D (contact surface side with the counterpart terminal), and the connection hole 11b includes A round plate terminal (in which a screw portion 13b of an insert-molded bolt 13 is inserted so that its head portion 13a is positioned in the resin of the case portion 12 and an electric wire 14a is connected above the terminal connection conductor plate 11a ( The mating terminal 14) and the washer 15 are overlapped, fastened by a screw of a nut 16, and fixed to the bolt 13, and the electric wire 14a and the terminal connection conductor plate 11a are electrically connected.

  On the other hand, a space 12a ′ and a space 12b ′ are provided on both sides of the battery connection conductor plate 11a ′ in the vicinity of the connection hole 11b ′ of the battery connection conductor plate 11a ′. The screw terminal of the battery (not shown) is inserted by ', and the battery terminal and the battery are connected by tightening a nut (not shown) corresponding to the screw terminal of the battery via a washer (not shown) from above the connection hole 11b'. The conductor plate 11a ′ can be electrically connected.

  For the tightening tools used for tightening the nuts for these electrical connections, tool space dimensions 17 and 17 'are secured in the spaces 12a and 12a', respectively. Here, the size Y of the battery terminal mounting fusible link D is determined by two constraints of the tightening tool space of the connection terminal in addition to the bus bar capacity (X) in consideration of the connection electric wire size with respect to the energization current value. End up.

  Here, the inventors focused on the terminal connection conductor plate 11a that can be reduced in size, and studied the downsizing of the fusible link for attaching the battery terminal by reducing the size of the terminal connection conductor plate 11a. It turned out that there were difficulties as follows.

  An example of a battery terminal mounting fusible link D in which the terminal connection conductor plate 1a is miniaturized is shown in FIG. 5 (reference numerals are the same as those in FIG. 4).

  5 (a) is a front view showing a miniaturized bus bar 11 ′, and FIG. 5 (b) is a front view of a fusible link E for battery terminal attachment in which such a bus bar is insert-molded. (C) is sectional drawing in LL of FIG.5 (b).

  The terminal connection conductor plate 11a of the bus bar 11 ′ in FIG. 5 (a) is narrower than the terminal connection conductor plate 11a in FIG. 5 (b), so that it can be reduced in size. It was broken. However, when insertable molding is performed to form a battery terminal mounting fusible link E and connection with the round plate terminal 14 is performed, the round plate terminal 14 and the battery connection conductor are marked with a symbol *. The plate 11a 'comes into contact with the battery 11 and cannot function as a battery terminal mounting fusible link. Here, the present inventors have reached the present invention through such basic studies.

  That is, in order to solve the above-described problem, the battery terminal mounting fusible link of the present invention has a first conductor whose one surface is in contact with the counterpart terminal and is electrically connected to the counterpart terminal as described in claim 1. In a fusible link for battery terminal attachment, a bus bar in which a plate and a second conductor plate are connected to each other through a fusible fuse portion on the same plane and spaced apart from each other is housed in a resin case portion A retracting portion for retracting the surface of the second conductor plate to the other surface on the same side as the contact surface of the first conductor plate with the counterpart terminal is the second conductor plate; 1 is a fusible link for attaching battery terminals, which is provided in the vicinity of an end of one conductor plate.

  Moreover, the fusible link for battery terminal attachment of the present invention is the fusible link for battery terminal attachment according to claim 1, wherein the retracting portion is stepped, and The retracting portion is formed by partially thinning the first conductor plate.

  Moreover, the battery terminal mounting fusible link according to the present invention is the battery terminal mounting fusible link according to claim 1, wherein the retracting portion is stepped and the retracting portion. However, the second conductor plate is arranged such that the portion of the second conductor plate on the first conductor plate side from the stepped retracting portion is parallel to the other portion of the second conductor plate. Is formed by being bent twice.

  The battery terminal mounting fusible link according to the present invention is the battery terminal mounting fusible link according to claim 1, wherein the retracting portion is the second conductor plate. It is formed by being bent on the other surface side.

  Moreover, the battery terminal mounting fusible link according to the present invention is the battery terminal mounting fusible link according to claim 2 or 3, in the battery terminal mounting fusible link according to claim 5. A portion of the first conductor plate side with respect to the retracting portion is embedded in the resin constituting the case portion.

  Moreover, the battery terminal mounting fusible link according to the present invention is the battery terminal mounting fusible link according to claim 5, wherein the battery terminal mounting fusible link is more than the retracting portion of the second conductor plate. A through hole is formed in a portion on the first conductor plate side, and resin portions on both sides of the second conductor plate in the portion are connected inside the through hole.

  Moreover, the fusible link for battery terminal attachment of this invention is the fusible link for battery terminal attachment of any one of Claim 1 thru | or 6 as described in Claim 7. The portion and its vicinity are arranged in the space portion of the case portion 2 so as to be visible from the outside.

  Moreover, the fusible link for battery terminal attachment of this invention is the fusible link for battery terminal attachment of any one of Claim 1 thru | or 7 as described in Claim 8. The fusible fuse portion is housed in the case portion so as to be bent.

  According to the fusible link for battery terminal mounting of the present invention, it is possible to reduce the size and weight without sacrificing the power capacity, or to increase the power capacity without requiring an increase in size. In the latter case, heat generation can be further suppressed. In addition, by using a highly reliable fusible link for battery terminal attachment, the input / output part can be brought closer, and at this time, the heat generated at the connection part with the battery and the connection part with the other terminal is input / output. It is possible to dissipate heat to the terminal of the connection, the electric wire via this terminal, and to the battery terminal, and local heat storage can be prevented, so that an increase in the allowable current value can be dealt with.

  Furthermore, in the prior art, the gap (FIG. 4G) is formed for electrical insulation between the first conductor plate and the second conductor plate. Although the corresponding portion has been removed, since the retracting portion is provided in the present invention, a space is formed between the first conductor plate and the second conductor plate without removing the space corresponding portion. Therefore, it is possible to increase the size of the first conductor plate and / or the second conductor plate, and it is possible to achieve effective utilization of raw materials, increase in capacity of the conductor plate, and suppression of heat generation at the same time.

  According to the fusible link for attaching the battery terminal according to the second aspect, the retracting portion can be easily provided by press molding when creating the bus bar.

  According to the fusible link for attaching the battery terminal according to the third aspect, the retracting portion can be easily provided by press molding at the time of creating the bus bar.

  According to the fusible link for attaching the battery terminal according to the fourth aspect, the retracting portion can be easily provided by press molding when creating the bus bar.

  According to the fusible link for battery terminal attachment according to claim 5, electrical connection between the two conductor plates without passing through the fusible fuse portion is reliably prevented.

  According to the fusible link for battery terminal attachment according to claim 6, since the resin member on both sides of the second conductor plate is reliably formed and the peeling is prevented, the battery having high electrical reliability. It can be a fusible link for terminal attachment. Further, since heat generated on one conductor plate side is more easily transmitted to the other conductor plate side, heat dissipation is promoted and partial heat storage is prevented.

  According to the fusible link for attaching the battery terminal according to claim 7, it is possible to easily determine whether or not the fusible fuse portion is cut, and to cause deterioration of the resin caused by heat generation of the fusible fuse portion or the failure of the molten resin. Occurrence of problems due to outflow to necessary places is prevented in advance.

  According to the fusible link for attaching a battery terminal according to claim 8, the conductor is formed when a screw is tightened by a nut or the like that is generated when the resin or bus bar is expanded or contracted after molding or when connected to a battery terminal or a plate terminal. Since the torque applied to the plate is transmitted to the fusible fuse portion and disconnection, distortion and deformation in the fusible fuse portion are prevented in advance, the reliability is high.

  Embodiments of a fusible link for battery terminal attachment according to the present invention will be specifically described below with reference to the drawings.

  FIG. 1 (a) is a front view showing a bus bar 1α used in the fusible link A for attaching battery terminals according to the present invention, and FIG. 1 (b) is a side surface of the front side of the bus bar 1α in FIG. 1 (a). FIG. 1 (c) is a front view of a battery terminal mounting fusible link A which is insert-molded so as to be integrally housed in a resin case 2 using such a bus bar 1α as an insert, FIG. 1 (d). Is a cross-sectional view at LL of the battery terminal mounting fusible link A, and FIG. 1 (e) is an enlarged cross-section of the battery connection conductor plate 1a ′ in FIG. 1 (d) near the end of the terminal connection conductor plate 1a side. Each figure is shown.

  One side of the bus bar 1α is in contact with a mating terminal (see the round plate terminal 4 in FIGS. 1C and 1D) and is electrically connected to the mating terminal 1a (first connecting conductor plate 1a And a battery connection conductor plate 1a ′ (second conductor plate) connected to a battery terminal (not shown) through a fusible fuse portion 1d on the same plane and spaced apart from each other (G). The terminal connection conductor plate 1a is provided with an extension portion 1c formed to extend in a direction orthogonal to the direction of the battery connection conductor plate 1a ′ and to which the fusible fuse portion 1d is connected, The terminal connection conductor plate 1a and the battery connection conductor plate 1a 'are provided with connection holes 1b and 1b' for electrical connection, respectively.

  Further, a stepped retreat for retreating the surface of the battery connection conductor plate 1a ′ to the other surface side on the same side as the contact surface of the terminal connection conductor plate 1a of the bus bar 1α with the round plate terminal (mating terminal) 4. A portion 1e1 ′ is provided. The step-shaped retracting portion 1e1 ′ is formed by forming a thin portion 1f1 ′ in which the portion of the battery connecting conductor plate 1a ′ on the terminal connecting conductor plate 1a side of the retracting portion 1e1 ′ is partially thinned. ing. In addition, in this example, two through holes 1g1 ′ are formed in the portion of the battery connection conductor plate 1a ′ that is closer to the terminal connection conductor plate 1a than the step-shaped retracting portion 1e1 ′, and the step-shaped retracting portion 1e1 ′. The resin portions of the case portion 2 on both sides of the battery connection conductor plate on the side closer to the terminal connection conductor plate 1a are connected to each other through the through-hole inside 1g1 ′. The thin portion can be easily formed by press working.

  In the case part 2 of the fusible link A for attaching the battery terminal, the fusible fuse part 1d of the bus bar 1α is disposed in the space provided in the case part 2 so as to be visible from the outside. The presence or absence of occurrence of disconnection of the fuse portion 1d can be easily confirmed. Furthermore, with this configuration, deterioration of nearby resin due to heat generation in the fusible fuse portion 1d, melting of the resin and fouling of the surroundings, or occurrence of unexpected inconveniences are prevented in advance.

  In addition, a space 2a is provided on the contact surface side with the round plate terminal 4 near the connection hole 1b of the terminal connection conductor plate 1a of the case part 2, and the connection hole 1b is provided in the resin of the case part 2. A round plate terminal (mating terminal) 4 and a washer, to which a wire portion 4b is connected, are inserted above the terminal connection conductor plate 1a. 5 are piled up, tightened with screws of nuts 6 and fixed to the bolts 3, and the electric wires 4 a and the terminal connection conductor plate 1 a are electrically connected.

  On the other hand, a space 2a ′ and a space 2b ′ are provided on both sides of the battery connection conductor plate 1a ′ in the vicinity of the connection hole 1b ′ of the battery connection conductor plate 1a ′. A battery-like terminal (not shown) is inserted by 'and a battery terminal and a battery are connected by tightening a nut (not shown) corresponding to the screw-like terminal of the battery via a washer (not shown), for example, from above the connection hole 1b'. The connection conductor plate 1a ′ is electrically connected.

  Tool space dimensions 7 and 7 'are secured in the spaces 2a and 2a' for the tightening tools used for tightening the nuts for electrical connection. Here, the size Y of the battery terminal mounting fusible link A is determined by two constraints of the tightening tool space of the connection terminal portion in addition to the bus bar capacity (X) considering the connection electric wire size with respect to the energization current value. However, in this example, the size Y of the battery connection conductor plate 1a ′ is reduced by reducing the size of the terminal connection conductor plate 1a without reducing the electric capacity of the battery connection conductor plate 1a ′. ing. However, as shown in FIG. 1 (e), the surface of the battery connection conductor plate 1a 'on the same side as the contact surface with the round plate terminal 4 of the terminal connection conductor plate 1a of the bus bar 1α is on the other side. The step-shaped retracting portion 1e1 ′ to be retracted is formed by the portion of the battery connecting conductor plate 1a ′ on the terminal connecting conductor plate 1a side from the retracting portion 1e1 ′ being a thin portion 1f1 ′ that is partially thinned. For this reason, the battery connection conductor plate 1a 'is not directly electrically connected to the round plate terminal 4, so that the function of the battery terminal mounting fusible link A is exhibited.

  Further, as shown in FIG. 1 (e), the thin portion 1f1 ′, which is the portion closer to the terminal connecting conductor plate 1a than the retracting portion 1e1 ′, is embedded in the resin constituting the case portion 2, A resin layer 2c is formed between the template terminal 4 and the thin-walled portion 1f1 ′, and the insulation between them is reliable. In addition to this, a portion closer to the terminal connecting conductor plate 1a than the retracting portion 1e1 ′. A through-hole 1f1 ′ is formed in a certain thin-walled portion 1f1 ′, and the resin portions (the case portion main body and the resin layer 2c1 as a part thereof) on both sides of the battery-connecting conductor plate 1a ′ in the thin-walled portion 1f1 ′ portion pass through. Since the resin layer 2c is reliably formed at the time of molding because it is connected inside the hole 1g1 ', and the loss of the resin layer 2c is prevented, the function of the fusible link A for attaching the battery terminal more reliably. Is demonstrated. Furthermore, since heat generated on one conductor plate side is easily transferred to the other conductor plate side by this structure, heat storage is prevented and heat dissipation is promoted.

  Further, similarly to the fusible link B (and C) for battery terminal attachment to be described later, the fusible fuse portion 1d is in the bent state, that is, in the case portion so as to be loosened in the vertical direction in FIG. 1 (c). It is stored. For this reason, the force generated by the expansion and contraction of the molded resin and bus bar, and the torque applied to the conductor plate when screwed with a nut or the like, which occurs when connecting to a battery terminal or plate terminal, etc. are transmitted to the fusible fuse portion. Disconnection, distortion, and deformation at the fusible fuse portion are prevented in advance.

  Next, a battery terminal mounting fusible link B which is another embodiment will be described with reference to FIG.

  2A is a front view showing the bus bar 1β used in the battery terminal mounting fusible link B according to the present invention, and FIG. 2B is a front side view of the bus bar 1β in FIG. 2A. FIG. 2 (c) is a perspective view seen from the direction of the terminal connection conductor plate 1a of the bus bar 1β, and FIG. 2 (d) is such that the bus bar 1β is inserted into the resin case 2 as an insert. The expanded sectional view of the terminal connection conductor plate 1a side edge part vicinity of the battery connection conductor plate 1a 'in the battery terminal attachment fusible link B insert-molded in FIG.

  The battery terminal mounting fusible link B (and the battery terminal mounting fusible link C described later) is the battery terminal mounting fusible link A and the terminal connection conductor of the battery connection conductor plate 1a ′ (second conductor plate). Since only the structure in the vicinity of the end portion on the side of the plate 1a (first conductor plate) is different, the description will be given only for this portion, and the common portions are denoted by the same reference numerals.

  The bus bar 1β is not shown with a terminal connection conductor plate 1a (first conductor plate) whose one surface is in contact with a counterpart terminal (see the round plate terminal 4 in FIG. 2 (d)) and is electrically connected to the counterpart terminal. A battery connection conductor plate 1a '(second conductor plate) connected to a battery terminal is a bus bar connected to each other via a fusible fuse portion 1d at the same plane and spaced from each other (G). The terminal connection conductor plate 1a is provided with an extension portion 1c formed to extend in a direction orthogonal to the direction of the battery connection conductor plate 1a 'and connected to the fusible fuse portion 1d, and the terminal connection conductor plate Connection holes 1b and 1b ′ for electrical connection are provided in 1a and battery connection conductor plate 1a ′, respectively.

  Further, a stepped retreating portion 1e2 ′ for retreating the surface of the battery connection conductor plate 1a ′ to the other surface side on the same side as the contact surface of the terminal connection conductor plate 1a of the bus bar 1β with the round plate terminal 4 is provided. It is provided. The stepped retracting portion 1e2 ′ is arranged such that the portion 1f2 ′ of the battery connecting conductor plate 1a ′ on the terminal connecting conductor plate 1a side of the retracting portion 1e2 ′ is parallel to the other portions of the battery connecting conductor plate 1a ′. The battery connection conductor plate 1a ′ is formed by being bent twice. This bending is easily formed by pressing.

  In addition, in this example, two through holes 1g2 ′ are formed in the portion 1f2 ′ on the terminal connection conductor plate 1a side of the stepped retracting portion 1e2 ′ of the battery connecting conductor plate 1a ′, and the stepped retracting portion The resin portions of the case 2 on both sides of the battery connection conductor plate of the portion 1f2 ′ on the side of the terminal connection conductor plate 1a from 1e2 ′ are connected by the through-hole inside 1g1 ′ (see FIG. 2 (d)).

  Since the bus bar 1β as described above is insert-molded in the resin case 2, the battery terminal mounting fusible link B is similar to the battery terminal mounting fusible link A in the battery connection conductor plate 1 a ′. The portion 1f2 ′ of the battery connection conductor plate 1a ′ on the terminal connection conductor plate 1a side and the round plate terminal 4 are not in direct contact with each other without reducing the electrical capacity of the retracting portion 1e2 ′. A resin layer 2c1 is formed on the surface, and the insulation between them is reliable. Further, a through hole 1f1 'is formed in the portion 1f2' on the terminal connecting conductor plate 1a side from the retracting portion 1e2 ', and the portion 1f2' The resin parts (case part main body and resin layer 2c1 as a part thereof) on both sides of the battery connection conductor plate 1a 'are connected inside the through hole 1g2', so that the resin layer is formed at the time of molding. With c1 are reliably formed, this in order to Boshitsu resin layer 2c2 is prevented more reliably the fusible link B battery terminal mounting function is exhibited. In addition, this structure makes it easier for heat generated on one conductor plate side to be transferred to the other conductor plate side, so that heat storage is prevented and heat dissipation is promoted.

  Here, the fusible fuse portion 1d of the bus bar 1β is insert-molded so as to be accommodated in the case portion 2 so as to be bent, that is, in a state where it is slackened downward as shown in FIG. 2 (c). ing. For this reason, the force generated by the expansion and contraction of the molded resin and bus bar, and the torque applied to the conductor plate when screwed with a nut or the like, which occurs when connecting to a battery terminal or plate terminal, etc. are transmitted to the fusible fuse portion. Disconnection, distortion and deformation at the fusible fuse portion 1d are prevented in advance.

  Still another embodiment of a fusible link C for battery terminal attachment will be described with reference to FIG.

  3A is a front view showing the bus bar 1γ used in the battery terminal mounting fusible link C according to the present invention, and FIG. 3B is a front side view of the bus bar 1γ in FIG. 3A. FIG. 3 (C) shows the terminal connection conductor of the battery connection conductor plate 1a ′ in the fusible link C for battery terminal attachment which is insert-molded so that the bus bar 1β is inserted into the resin case 2 as an insert. Enlarged sectional views in the vicinity of the end of the plate 1a are shown.

  The bus bar 1γ is connected to a terminal connection conductor plate 1a which is in contact with a counterpart terminal (see the round plate terminal 4 in FIG. 1C) and electrically connected to the counterpart terminal and a battery terminal (not shown). The battery connection conductor plate 1a 'is a bus bar that is connected to the terminal connection conductor plate 1a via the fusible fuse portion 1d on the same plane and spaced apart from each other. What is the direction of the battery connection conductor plate 1a'? An extension portion 1c is provided which is extended in the orthogonal direction and is connected to the fusible fuse portion 1d, and the terminal connection conductor plate 1a and the battery connection conductor plate 1a ′ are electrically connected to each other. Connection holes 1b and 1b 'are provided.

  Further, a retreating portion 1e3 ′ is provided that folds the surface of the battery connection conductor plate 1a ′ on the same side as the contact surface of the terminal connection conductor plate 1a of the bus bar 1γ with the round plate terminal 4 to the other surface and retracts it. It is. The retracting portion 1e3 'is formed by bending a portion 1f3' on the terminal connecting conductor plate 1a side of the battery connecting conductor plate 1a 'from the retracting portion 1e3' to the lower side in the drawing. This bending is easily formed by pressing.

  Since the bus bar 1γ as described above is insert-molded in the resin case 2, the battery terminal mounting fusible link C is similar to the battery terminal mounting fusible link A in the battery connection conductor plate 1 a ′. In addition, the portion 1f3 ′ of the battery connection conductor plate 1a ′ and the round plate terminal 4 are not in direct contact with each other from the retracting portion 1e3 ′, and the case portion 2 is formed therebetween. In this case, since the insulation between them is reliable, the function of the fusible link C for attaching the battery terminal is surely exhibited.

  Here, like the battery terminal mounting fusible links A and B, the fusible fuse portion 1d of the bus bar 1γ is insert-molded so as to be housed in the case portion 2 in a bent state.

  In all of the above embodiments, the terminal connection conductor plate 1a has been miniaturized for the purpose of downsizing the fusible link for battery terminal attachment. However, the battery connection for the purpose of improving the electric capacity of the battery connection conductor plate 1a 'is shown. In the case where the conductor plate 1a 'is enlarged, it can be applied by providing a retracting portion in the same manner, and such a case is also included in the present invention.

It is a figure which shows the fusible link A for battery terminal attachment which concerns on this invention. (A) It is a front view of the bus bar 1 (alpha) used with the fusible link A for battery terminal attachment. (B) It is a side view of the near side of bus bar 1α. (C) It is a front view of the fusible link A for battery terminal attachment. (D) It is sectional drawing in AA of the fusible link A for battery terminal attachment. (E) It is an expanded sectional view of terminal connection conductor board 1a side edge part vicinity of battery connection conductor board 1a '. It is a figure which shows the fusible link B for battery terminal attachment which concerns on this invention. (A) It is a front view of the bus bar 1 (beta) used with the fusible link B for battery terminal attachment. (B) It is a side view of the near side of bus bar 1β. (C) It is the perspective view seen from the direction of the terminal connection conductor plate 1a of the bus bar 1β. (D) It is an expanded sectional view of terminal connection conductor board 1a side edge vicinity vicinity of battery connection conductor board 1a '. It is a figure which shows the fusible link C for battery terminal attachment which concerns on this invention. (A) It is a front view of the bus bar 1gamma used with the fusible link C for battery terminal attachment. (B) It is a side view of the near side of bus bar 1γ. (C) It is an expanded sectional view of terminal connection conductor board 1a side edge part vicinity of battery connection conductor board 1a '. It is a figure which shows the fusible link D for battery terminal attachment which concerns on a prior art. (A) It is a front view. (B) It is sectional drawing in AA of Fig.4 (a). It is a figure which shows the problem in the battery terminal attachment fusible link E which reduced the size of the battery terminal attachment fusible link D concerning the said prior art. (A) It is a front view. (B) It is sectional drawing in AA of Fig.5 (a). FIG.

Explanation of symbols

A, B, C Examples of fusible links for attaching battery terminals according to the present invention 1α, 1β, 1γ Bus bar 1a Terminal connection conductor plate (first conductor plate)
1a 'battery connection conductor plate (second conductor plate)
1d Fusible fuse part 1e1 ', 1e2', 1e3 'Retraction part 1f1' Thin part 1g1 ', 1g2' Through hole 2a, 2a ', 2b' Space 2c1, 2c2 Resin layer 4 Round plate terminal (mating terminal)
5 Washer 6 Nut 7, 7 'Tool space dimensions

Claims (8)

The first conductor plate and the second conductor plate, which are in contact with the counterpart terminal and electrically connected to the counterpart terminal, are connected to each other via a fusible fuse portion on the same plane and spaced apart from each other. In the fusible link for attaching battery terminals, the bus bar is housed in the case 2 made of resin.
A retracting portion for retracting the surface of the second conductor plate to the other surface side on the same side as the contact surface with the counterpart terminal in the first conductor plate is the first conductor plate of the second conductor plate. A fusible link for attaching a battery terminal, characterized in that the fusible link is provided in the vicinity of an end portion on the conductor plate side.   2. The battery terminal according to claim 1, wherein the retracting portion has a step shape, and the retracting portion is formed by partially thinning the first conductive plate. Fusible link for installation.   The retracting portion is stepped, and the retracting portion is a portion of the second conductor plate closer to the first conductor plate than the stepped retracting portion is another portion of the second conductor plate. 2. The fusible link for attaching a battery terminal according to claim 1, wherein the second conductor plate is formed by being bent twice so that the second conductor plate is parallel to the second conductor plate.   2. The fusible link for attaching a battery terminal according to claim 1, wherein the retracting portion is formed by bending the second conductive plate toward the other surface.   The portion of the second conductor plate closer to the first conductor plate than the retracting portion is embedded in the resin constituting the case portion. Fusible link for mounting battery terminals.   A through hole is formed in a portion of the second conductor plate closer to the first conductor plate than the retracting portion, and the resin portions on both sides of the second conductor plate in the portion are inside the through hole. The fusible link for attaching a battery terminal according to claim 5, wherein the fusible link is connected.   The battery terminal attachment according to any one of claims 1 to 6, wherein the fusible fuse portion and the vicinity thereof are disposed in the space portion of the case portion 2 so as to be visible from the outside. For fusible links.   8. The battery terminal mounting fusible according to any one of claims 1 to 7, wherein the bus bar is housed in the case portion so that the fusible fuse portion is bent. Link.

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