Fuse connection terminal

Abstract

To obtain a fuse connection terminal with high durability.SOLUTION: From a side 11A and a side 11B, metal plates constituting these sides are extended in an x direction and removed, and then bent toward a center side in a y direction and a negative side in the x direction, thereby forming a leaf spring 12A and a leaf spring 12B, respectively. Protrusions 13A, 13B formed by being punched out so as to protrude locally the respective sides 11A, 11B inward are formed respectively near the central parts of the sides 11A, 11B in the x direction and a z direction. The leaf springs 12A, 12B include rear curved parts (outer support parts) 12A3, 12B3, respectively, formed in a shape convex downward behind respective tab terminal contact portions 12A2, 12B2. Deformation of the leaf spring 12A is limited by the engagement of the rear curved part (rear support part) 12A3 with the protrusion 13A.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a fuse connection terminal to which a fuse or the like is attached. [Background technology]

[0002] In automobiles and the like, connection terminals are used to mechanically fix and electrically connect electrical components (including wiring). One form of connection terminal is a connector that connects ordinary wiring together. Generally, harnesses in which many wires are bundled together are used, and in order to connect the harnesses together, multi-pole connectors in which many terminals are arranged so that each wire can be connected simultaneously are widely used.

[0003] On the other hand, components such as fuses, which are expected to be replaced when necessary, such as when they blow or during regular inspections, are also attached to connection terminals. Fuses usually have only two terminals, and because large currents flow through these terminals, their structure differs significantly from that of the general wiring connectors described above. While the terminals used in the wiring connectors described above are small and have a small contact area that allows for arrangement, the fuse terminals used for these connectors are large, flat terminals (tab terminals) that can handle large currents, and the fuse connection terminals to which these are attached also have a corresponding structure.

[0004] In the wiring connector described above, a connector provided with a terminal to which one of the wirings (harnesses) to be connected is fixed is connected to a connector provided with a terminal to which the other wiring (harness) is fixed, and a large number of terminals corresponding to the respective wirings are connected simultaneously. In this case, the terminals are arranged in a large number in a plane perpendicular to the direction of movement when the connectors are connected, so that a large number of terminals can be connected simultaneously. In this structure, the terminals on one connector are not connected in an inclined state relative to the terminals on the other connector.

[0005] In contrast, in the above-mentioned fuse connection terminal, the tab terminal on the fuse side may be installed in an inclined state. Therefore, the fuse connection terminal is designed to reliably connect the terminals together and allow a large current to flow between them, taking such a situation into consideration. Such a structure is described, for example, in Patent Document 1. This fuse connection terminal uses two large leaf springs to secure the tab terminal from both sides. While the above-mentioned wiring connector requires each terminal to be small, the fuse connection terminal is larger, so a structure in which the tab terminal is secured from both sides with such large leaf springs is effective.

[0006] Such a leaf spring is not a separate component from the fuse connection terminal, but can be formed as part of the fuse connection terminal when a single metal plate is processed to form the fuse connection terminal, which allows the fuse connection terminal to be manufactured inexpensively and also increases the fixing strength of the leaf spring in the fuse connection terminal. [Prior art documents] [Patent documents]

[0007] [Patent Document 1] Japanese Patent Application Laid-Open No. 2000-106078 DISCLOSURE OF THE INVENTION [Problem to be solved by the invention]

[0008] In fuse connection terminals that use two leaf springs to secure a tab terminal, the leaf springs must be able to elastically deform appropriately when the tab terminal is inserted in order to generate elastic force. While this allows for the tab terminal to be secured even when inserted at an angle, inserting a tab terminal at an angle like this places a large load on one of the leaf springs, particularly at the base where the leaf spring is formed. This results in particularly large deformation of the leaf spring, which can lead to plastic deformation, deterioration, or even breakage. This reduces the durability of this fuse connection terminal, and a more durable fuse connection terminal is needed.

[0009] The present invention has been made in view of the above circumstances, and has as its object to solve the above problems. [Means for solving the problem]

[0010] The present invention provides a fuse connection terminal that clamps and fixes a plate-shaped tab terminal connected to a fuse from both sides, and uses a terminal portion that fixes the tab terminal inserted from one side to the other along a first direction along a central axis parallel to a surface of the tab terminal, and the terminal portion includes: a first leaf spring that is taken out from one side in the first direction of a first side surface that is a side surface on one side in a second direction perpendicular to the surface of the inserted tab terminal, and is bent toward the central axis and further toward the other side in the first direction; and a second leaf spring that is taken out from one side in the first direction of a second side surface that is a side surface on the other side in the second direction, and is bent toward the central axis and further toward the other side in the first direction, and the first leaf spring and the second leaf spring each protrude toward the central axis in the second direction. The tab terminal is configured to be sandwiched between the tab terminal abutment portion of the first leaf spring and the tab terminal abutment portion of the second leaf spring, and a first protrusion portion on the first side surface locally protruding toward the central axis at a portion of the first side surface, and a second protrusion portion on the second side surface locally protruding toward the central axis at a portion of the second side surface, are formed by stamping a portion of the first side surface and a portion of the second side surface toward the central axis, respectively. When the first leaf spring is compressed toward one side in the second direction, the outer support portion of the first leaf spring is engaged with the first protrusion portion, and when the second leaf spring is compressed toward the other side in the second direction, the outer support portion of the second leaf spring is engaged with the second protrusion portion. The first protrusion or the second protrusion may be formed by processing the metal plate constituting the first protrusion or the second protrusion by stamping so that the metal plate is partially divided in a third direction perpendicular to the first direction and the second direction, and the amount of protrusion changes continuously along the first direction. The first protrusion or the second protrusion may be formed by processing the metal plate constituting the first protrusion or the second protrusion by stamping so that the metal plate is partially divided in the first direction and the amount of protrusion changes continuously along a third direction perpendicular to the first direction and the second direction. [Effects of the Invention]

[0011] Since the present invention is configured as described above, it is possible to obtain a fuse connection terminal with high durability. [Brief explanation of the drawings]

[0012] [Figure 1] 2A to 2C are diagrams showing a fuse connection terminal according to the first embodiment as viewed from two different directions. [Figure 2] 2A to 2C are cross-sectional views of a fuse connection terminal according to the first embodiment in two different directions. [Figure 3] 3 is a cross-sectional view showing a state in which a tab terminal is attached to the fuse connection terminal according to the first embodiment. FIG. [Figure 4] 3 is a cross-sectional view showing a state in which a tab terminal is attached in an inclined state to a fuse connection terminal according to the first embodiment. FIG. [Figure 5] 10 is a cross-sectional view showing a state in which a tab terminal is attached in an inclined state to a fuse connection terminal that is not provided with a protrusion portion. FIG. [Figure 6] 10A to 10C are diagrams showing a fuse connection terminal according to a second embodiment as viewed from two different directions. [Figure 7] 10A to 10C are cross-sectional views of a fuse connection terminal according to a second embodiment in two different directions. [Figure 8] 10 is a cross-sectional view showing a state in which a tab terminal is attached to a fuse connection terminal according to a second embodiment. FIG. [Figure 9] 10 is a cross-sectional view showing a state in which a tab terminal is attached in an inclined state to a fuse connection terminal according to a second embodiment. FIG. [Figure 10]FIG. 10 is a front view showing a state in which a tab terminal is attached to a fuse connection terminal according to a second embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0013] A fuse connection terminal according to an embodiment of the present invention will be described. A large, plate-shaped terminal (tab terminal) is attached to this fuse connection terminal for use. This tab terminal is fixed by being clamped from both sides by leaf springs, similar to the technology described in Patent Document 1. This fuse connection terminal is formed by processing a metal plate, and is actually provided with a terminal portion to which the tab terminal is attached and a wiring fixing portion to which wiring to be electrically connected to this tab terminal when attached is fixed. Because the structure of the wiring fixing portion is unrelated to the present invention, only the terminal portion will be described below.

[0014] (First embodiment) 1A and 1B are views of a fuse connection terminal 1 (terminal portion 10) according to a first embodiment as viewed from two different directions. Here, the direction in which a tab terminal attached to this is detached is the x-direction (first direction). As will be described later, the tab terminal is attached to this fuse connection terminal 1 by moving it from the positive side (one side) to the negative side (the other side) in the x-direction. The attached tab terminal is planar with the y-direction (second direction) as its normal direction, and the z-direction (vertical direction: third direction) is perpendicular to the x- and y-directions.

[0015] The terminal portion 10 is electrically connected to the wiring fixed to the wiring fixing portion (not shown). As shown in FIG. 1(a), the terminal portion 10 has a generally rectangular shape with its sides parallel to the x-axis, y-axis, and z-axis and its length extending in the x-direction. Metal plates extending toward the positive x-direction from the side (first side) 11A on the positive side of the y-direction and the side (second side) 11B on the negative side of the y-direction of the terminal portion 10 are bent toward the center in the y-direction and toward the negative x-direction to form a leaf spring (first leaf spring) 12A and a leaf spring (second leaf spring) 12B, respectively. When viewed from the positive x-direction, a gap is formed between the leaf springs 12A and 12B, into which a tab terminal can be inserted. The configurations of the leaf springs 12A and 12B are symmetrical on the positive and negative y-direction sides.

[0016] Furthermore, near the centers of side surfaces 11A and 11B in the x and z directions, protrusions (first protrusions) 13A and (second protrusions) 13B are formed by stamping so that side surfaces 11A and 11B locally protrude inward (toward the negative y direction for side surface 11A and the positive y direction for side surface 11B). A bottom surface 14 perpendicular to the z direction is provided on the negative z direction side. As described above, this structure is manufactured by processing a single metal plate. Therefore, the terminal portion 10 shown in FIG. 1 can be obtained by bending the metal plate formed with the above components by sheet metal processing into a rectangular shape and engaging the assembly fixing portion 15 provided on the positive z direction side in FIG. 1 with the end of side surface 11A on the positive y direction side.

[0017] 2(a) is a cross-sectional view perpendicular to the z direction near the center of the terminal portion 10 in FIG. 1 in the z direction. Here, a tab terminal is usually inserted along the central axis X. The leaf springs 12A and 12B include front curved portions 12A1 and 12B1, where the leaf springs 12A and 12B are taken out from the side surfaces 11A and 11B, and are curved so that the side surfaces 11A and 11B turn inward by nearly 180 degrees (toward the negative y direction for the side surface 11A and the positive y direction for the side surface 11B). The leaf springs also include tab terminal abutment portions 12A2 and 12B2, which are bent at their rear ends (negative x direction sides) to protrude toward the central axis X. When no external force is applied to the leaf springs 12A and 12B, the distance in the y direction between the tab terminal abutment portions 12A2 and 12B2 is set to be smaller than the thickness of the tab terminals in the y direction. Therefore, the tab terminal can be sandwiched between them, and at this time, the tab terminal is held by the elastic force of the leaf springs 12A and 12B.

[0018] The leaf springs 12A and 12B also have rearward curved portions (outer support portions) 12A3 and 12B3, respectively, that are convex outward (toward the positive y-direction for the leaf spring 12A and the negative y-direction for the leaf spring 12B) behind the tab terminal contact portions 12A2 and 12B2 (negative x-direction). Leaf spring tip portions 12A4 and 12B4, which form the rear ends of the leaf springs 12A and 12B, are provided behind the rearward curved portions 12A3 and 12B3. That is, the leaf spring 12A (12B) has a frontward curved portion 12A1 (12B1), a tab terminal contact portion 12A2 (12B2), a rearward curved portion 12A3 (12B3), and a leaf spring tip portion 12A4 (12B4), which form the end portion, that are bent (curved) in the xy plane shown in FIG. 2(a). In FIG. 2(a), the portion sandwiched between these has a linear shape.

[0019] 2(a), protrusion 13A has protrusion vertex 13A1, which is the most protruding vertex, inclined surface 13A2 in front of it (positive x-direction) so that the amount of protrusion gradually decreases toward the front, and inclined surface 13A3 behind it (negative x-direction) so that the amount of protrusion gradually decreases toward the rear. Similarly, protrusion 13B has protrusion vertex 13B1 and inclined surfaces 13B2 and 13B3.

[0020] 2(b) is a cross-sectional view in the CC direction in FIG. 2(a), showing a cross section perpendicular to the x direction at the location where protrusions 13A and 13B are formed. As shown in FIG. 2(a), protrusions 13A and 13B are formed of a metal plate continuously with side surfaces 11A and 11B along the x direction, but as shown in FIG. 2(b), they are formed so as to be separated from side surfaces 11A and 11B in the z direction. Such protrusions 13A (13B) can be formed by cutting the metal plate that forms side surfaces 11A (11B) along the z direction and performing a stamping process.

[0021] 3(a) to 3(c) show, in a cross section similar to that of Fig. 2(a), a state in which the tab terminal 200 is inserted into the terminal portion 10 having this structure without tilting along the central axis X. In this figure, the main surface of the tab terminal 200 is perpendicular to the paper surface (the normal line is the up-down direction in the figure).

[0022] First, as shown in Fig. 3(a), when the tab terminal 200 is inserted from the positive side toward the negative side in the x direction, the tab terminal 200 abuts against portions of the leaf springs 12A and 12B that are on the positive side in the x direction relative to the tab terminal abutment portions 12A2 and 12B2. As shown here, the tab terminal abutment portions 12A2 and 12B2 are shaped so that the distance between them gradually narrows toward the negative side in the x direction. Therefore, as shown in Fig. 3(b), the operator can further push the tab terminal 200 from this state toward the negative side in the x direction.

[0023] In the state shown in FIG. 3(b), tab terminal contact portions 12A2 and 12B2 are subjected to forces in the positive and negative y-directions, respectively, and deform in response to these forces. This deformation rotates leaf spring tip portion 12A4 counterclockwise around front curved portion 12A1 and leaf spring tip portion 12B4 clockwise around front curved portion 12B1, placing a heavy load on front curved portions 12A1 and 12B1 during deformation. During this deformation, rear curved portions 12A3 and 12B3 move outward, generating elastic forces in leaf springs 12A and 12B that press against tab terminal 200. In FIG. 3(b), leaf spring tip portion 12A4 of leaf spring 12A in the state shown in FIG. 2(a) is shown by a dotted line. The amount of movement of leaf spring tip portion 12A4 from the state shown in FIG. 2 is D1.

[0024] 3(c), in this state, the tab terminal 200 can be further pressed toward the negative x-direction. In this state, the tab terminal 200 is firmly fixed by the elastic force of the leaf springs 12A and 12B caused by the compression. In this state, the tab terminal 200 is properly attached to the terminal portion 10.

[0025] Figure 4 shows the state corresponding to Figure 3(c) when the tab terminal 200 is inserted in an inclined state. In this case, the state of the leaf spring 12B remains the same as in Figure 3(c). On the other hand, the load on the leaf spring 12A becomes particularly large, so the leaf spring 12A is deformed to be more compressed in the y direction than in Figure 3(c). In Figure 4, the leaf spring tip 12A4 in the state of Figure 2(a) is shown by a dotted line, and the amount of movement of the leaf spring tip 12A4 in this case from the state of Figure 2(a) is D2, where D2 > D1.

[0026] However, as shown in Fig. 4, this deformation is limited by the rear curved portion (rear support portion) 12A3 being locked by the protrusion 13A. That is, the amount of movement is prevented from becoming larger than D2 in Fig. 4. Alternatively, a large force would be required to further deform the leaf spring 12A, making it practically difficult to insert the tab terminal 200 at a large inclination angle.

[0027] Fig. 5 is a diagram corresponding to Fig. 4, showing a case where the tab terminal 200 is inserted in an inclined state in the absence of the protrusions 13A and 13B. In this case, the leaf spring 12A can be deformed more greatly, and the amount of movement D3 of the leaf spring tip 12A4 from the state shown in Fig. 2(a) satisfies the relationship D3>D2.

[0028] When the deformation of the leaf spring 12A becomes large in this way, the load on the front curved portion 12A1 in particular becomes large, causing problems such as plastic deformation or breakage of this portion. In the terminal portion 10 described above, by providing the protrusions 13A, 13B in combination with the rear curved portions 12A3, 12B3, excessive deformation of the leaf springs 12A, 12B is suppressed, or the tab terminal 200 is suppressed from being inserted at an angle that would cause such large deformation.

[0029] Furthermore, by locating the rearward curved portion 12A4 forward (positive side in the x-direction) of the protrusion apex 13A1 in Fig. 2, when the deformation of the leaf spring 12A becomes large, the protrusion slope 13A2 in front of the protrusion apex 13A1 and the linear region of the leaf spring 12A from the rearward curved portion 12A3 to the tip end 12A4 (region A1 in Fig. 2) can be brought into surface contact with each other, as shown in Fig. 4. This strongly limits the deformation of the leaf spring 12A (movement of the tip end 12A4) in the state shown in Fig. 4.

[0030] Therefore, the position of the protrusion 13A formed on the side surface 11A can be set appropriately as long as it is possible to limit the deformation of the leaf spring 13A (movement of the leaf spring tip 12A4). In this case, the position of the protrusion 13A (protrusion apex 13A1) in the x direction in Figure 2 is set near the leaf spring tip 12A4 so that the leaf spring 12A and the protrusion 13A partially abut when the leaf spring tip 12A4 moves in the positive y direction. 4, region A1 of leaf spring 12A in FIG. 2 contacts protrusion slope 13A2 in front of protrusion apex 13A1, but protrusion 13A can be formed more toward the positive side of the x direction so that region A2 of leaf spring 12A in FIG. 2 (the linear region from tab terminal contact portion 12A2 to rear curved portion 12A3) contacts protrusion slope 13A3 behind protrusion apex 13A1 when leaf spring tip 12A4 moves toward the positive side of the y direction. In this case, the protrusion amount of protrusion apexes 13A1 and 13B1 in the y direction can be appropriately set as long as the stamping process is feasible, thereby setting and limiting the maximum movement amount (D2 in FIG. 4) of leaf spring tip ends 12A4 and 12B4.

[0031] Furthermore, by providing the protrusions 13A and 13B, the mechanical strength of the side surfaces 11A and 11B against bending can be improved. Such bending can be caused by forces applied along arrows B1 (in the xy plane) and B2 (in the yz plane) in FIG. 1(b). Here, the force along arrow B1 corresponds to the force (arrow B3) that the side surface 11A receives via the leaf spring 12A in FIG. 4, for example. By providing the protrusions 13A and 13B shaped as described above, the side surfaces 11A and 11B can be reinforced against bending in either direction, but the mechanical strength can be particularly increased against bending corresponding to arrow B1.

[0032] (Second embodiment) FIG. 6, like FIG. 1, shows a fuse connection terminal 2 (terminal portion 20) according to a second embodiment as viewed from two different directions. Here, the x, y, and z directions are defined in the same way as in FIG. 1. The terminal portion 20 has a generally rectangular shape with its sides parallel to the x-axis, y-axis, and z-axis and its length extending in the x-direction. Similarly, the terminal portion 20 has a side surface (first side surface) 21A and a leaf spring (first leaf spring) 22A on the positive side in the y-direction, and a side surface (second side surface) 21B and a leaf spring (second leaf spring) 22B on the negative side in the y-direction. Also, like the terminal portion 10, the terminal portion 20 has a bottom surface 24 and an assembly fixing portion 25. However, a protrusion (first protrusion) 23A (protrusion (second protrusion) 23B) having a shape different from the protrusion 13A (13B) is provided on the side surface (first side surface) 21A (side surface (second side surface) 21B). Therefore, the terminal portion 20 is also manufactured by sheet metal processing of a metal plate.

[0033] Fig. 7(a) is a cross-sectional view perpendicular to the z-direction of the portion of the terminal 20 in Fig. 6 where the protrusions 23A and 23B are provided near the center in the z-direction, and corresponds to Fig. 2(a) of the terminal 10. As shown in Fig. 7(a), the shape of the leaf spring 22A (22B) is similar to that of the leaf spring 12A (12B), and similarly includes a forward curved portion 22A1 (22B1), a tab terminal abutment portion 22A2 (22B2), a rear curved portion (outer support portion) 22A3 (22B3), and a leaf spring tip portion 22A4 (22B4) that serves as the end portion. The relationship between the leaf springs 22A and 22B and the central axis X is also similar.

[0034] This terminal 20 also has a protrusion (first protrusion) 23A and a protrusion (second protrusion) 23B corresponding to the protrusions 13A and 13B of the terminal 10, but their shapes are different. Fig. 7(b) is a cross-sectional view taken along the E-E axis in Fig. 7(a), corresponding to Fig. 2(b) of the terminal 10, showing a cross section perpendicular to the x-axis at the location where the protrusions 23A and 23B are formed. As shown in Fig. 7(b), the protrusions 23A and 23B are formed of a metal plate along the z-direction, continuously with the side surfaces 21A and 21B, and the amount of protrusion of the protrusion 23A (23B) from the side surface 21A (21B) along the y-direction is formed to be maximum at the protrusion top 23A1 (23B1).

[0035] 7(a), the protrusion 23A (23B) is formed so as to be separated from the side surface 21A (21B) in the x direction. Unlike the protrusions 13A and 13B, such protrusions 23A (23B) can be formed by cutting the metal plate that forms the side surfaces 21A and 21B in the x direction and performing a stamping process.

[0036] 8(a) to 8(c), similar to Fig. 3(a) to 3(c), show a state in which the tab terminal 200 is inserted into the terminal portion 20 having this structure without tilting along the central axis X, in a cross section similar to Fig. 7(a). Also, Fig. 9, similar to Fig. 4, shows a state in which the tab terminal 200 is attached to this terminal portion 20 with a large tilt.

[0037] The state of the leaf spring 22A (22B) in Figures 8(a) to 8(c) is the same as the state of the leaf spring 12A (12B) in Figures 3(a) to 3(c). Also in Figure 9, the deformation of the leaf spring 22A is limited by the rear curved portion 22A3 abutting against the protrusion 23A (protrusion apex 23A1). This prevents excessive deformation of the leaf spring 12A.

[0038] Furthermore, similarly to the terminal portion 10, the mechanical strength of the side surfaces 21A and 21B can be improved by providing the protrusions 23A and 23B. Such bending can be caused by the application of forces along the arrows B1 (in the xy plane) and B2 (in the yz plane) in Figure 7(b).

[0039] FIG. 10 is a front view of the terminal portion 20 in the state shown in FIG. 8(c) with the tab terminal 200 attached thereto, as viewed from the positive x-direction. The leaf spring 22A (side surface 21A) and the leaf spring 22B (side surface 21B) shown by solid lines are the normal configuration, which allows for a sufficiently large contact area between each leaf spring and the tab terminal 200, thereby reducing contact resistance. On the other hand, when a force is applied along arrow B2 in FIG. 7(b), this corresponds to a force being applied to the side surfaces 21A and 21B along arrow B4 in FIG. 10. In the configuration shown by the dashed lines in FIG. 10, where the side surfaces 21A and 21B are deformed as a result, the contact area is reduced, resulting in high contact resistance. Therefore, by increasing the strength against application of a force along arrow B1 (in the xy plane) in FIG. 7(b), a stable, low contact resistance can be achieved. By providing the protrusions 23A, 23B having the above-described shapes, the side surfaces 21A, 21B can be reinforced against bending in either direction, but the mechanical strength can be particularly increased against bending corresponding to the arrow B2.

[0040] Therefore, the shape of the protrusions can be appropriately set depending on the direction in which reinforcement against bending of the side surface is particularly required. In this case, the first protrusions and the second protrusions can be different in shape.

[0041] The terminals 10 and 20 can be formed by processing a metal plate as described above. In this case, the terminals 10 and 20 can be obtained by simply adding a step of forming the protrusions by stamping a metal plate for forming a conventional terminal without protrusions. Therefore, the terminals 10 and 20 can be manufactured easily and inexpensively.

[0042] In the above example, the leaf springs are shaped as shown in Figures 2 and 6, but the leaf springs may have any shape as long as they can at least fix the tab terminals and lock the outer support parts with the protrusions. The two leaf springs may have different shapes.

[0043] In the above example, a terminal (fuse connection terminal) that connects one wire and one tab terminal was described, but a similar structure can also be used in a connector that simultaneously connects multiple terminals and multiple wires. However, as mentioned above, this structure is particularly effective when there is a risk that the terminal will be installed in an inclined state, so it is particularly preferable to use it for fuses.

[0044] The present invention has been described above based on an embodiment. This embodiment is merely an example, and it will be understood by those skilled in the art that various modifications are possible in the combination of the respective components, and that such modifications are also within the scope of the present invention. [Explanation of symbols]

[0045] 1, 2 Fuse connection terminals 10, 20 Terminal section 11A, 21A Side (first side) 11B, 21B side (second side) 12A, 22A leaf spring (first leaf spring) 12B, 22B leaf spring (second leaf spring) 12A1, 12B1, 22A1, 22B1 Front curved section 12A2, 12B2, 22A2, 22B2 Tab terminal contact area 12A3, 12B3, 22A3, 22B3 Rear curved part (outside support part) 12A4, 12B4, 22A4, 22B4 leaf spring tip 13A, 23A Protrusion (first protrusion) 13A1, 13B1 Protrusion apex 13A2, 13A3, 13B2, 13B3 Slope 13B, 23B Protrusion (second protrusion) 14, 24 bottom 15, 25 Assembly fixing part 23A1, 23B1 Top of protrusion 200 Tab terminal X center axis

Claims

1. A fuse connection terminal that clamps and fixes a plate-shaped tab terminal connected to a fuse from both sides, a terminal portion for fixing the tab terminal inserted from one side to the other along a first direction along a central axis parallel to a surface of the tab terminal; The terminal portion includes a first leaf spring that is taken from one side in a second direction of a first side surface, which is a side surface on one side in a second direction perpendicular to a surface of the inserted tab terminal, and is bent toward the central axis and then toward the other side in the first direction; and a second leaf spring that is taken from one side in the first direction of a second side surface, which is a side surface on the other side in the second direction, and is bent toward the central axis and then toward the other side in the first direction, The first leaf spring and the second leaf spring each have: a tab terminal abutment portion that protrudes toward the central axis in the second direction; an outer support portion that protrudes in the second direction opposite to the side where the central axis is located; Equipped with the tab terminal is configured to be sandwiched between the tab terminal abutment portion of the first leaf spring and the tab terminal abutment portion of the second leaf spring, a first protrusion on the first side surface, which is a portion of the first side surface that locally protrudes toward the central axis, and a second protrusion on the second side surface, which is a portion of the second side surface that locally protrudes toward the central axis, are formed by hammering a portion of the first side surface and a portion of the second side surface toward the central axis, a fuse connection terminal characterized in that when the first leaf spring is compressed toward the one side in the second direction, the outer support portion of the first leaf spring is engaged with the first protrusion, and when the second leaf spring is compressed toward the other side in the second direction, the outer support portion of the second leaf spring is engaged with the second protrusion.

2. 2. The fuse connection terminal according to claim 1, wherein the first protrusion or the second protrusion is formed by processing the metal plate by stamping so that the metal plate constituting the first protrusion or the second protrusion is partially divided in a third direction perpendicular to the first direction and the second direction, and the protrusion amount changes continuously along the first direction.

3. 2. The fuse connection terminal according to claim 1, wherein the first protrusion or the second protrusion is formed by processing the metal plate by stamping so that the metal plate constituting the first protrusion or the second protrusion is partially divided in the first direction and the protrusion amount changes continuously along a third direction perpendicular to the first direction and the second direction.

Images