Electrical connection box

Abstract

To reduce a manufacturing cost of an electric connection box constantly holding a fuse puller.SOLUTION: An electric connection box 1 comprises: a synthetic resin frame 2; a plurality of resin blocks assembled to the frame 2; electronic components such as a fuse, a relay and the like assembled by the resin block; and a fuse puller 4 that is a fixture for pulling off the fuse. The fuse puller 4 is integrally formed with the frame 2, and is communicated with the frame 2 via fragile parts 5a and 5b which can easily separate the fuse puller 4 from the frame 2. In one resin block 3, a fuse puller housing part 34 that can house the fuse puller 4 separated from the frame 2 is provided. The fuse puller housing part 34 is arranged just under the fuse puller 4 in a state where it is not separated from the frame 2.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to an electrical connection box mounted on an automobile.

Background Art

[0002] As an example of an electrical connection box, Patent Document 1 discloses an electrical connection box in which a fuse puller storage part is integrally provided in a frame to which fuses and relays are assembled, and a fuse puller is always stored in the fuse puller storage part. The fuse puller is a resin molded product and is a jig for pulling out a fuse from the frame.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the above prior art, since a fuse puller is provided as a component of the electrical connection box, there is a problem that the number of components and the assembly man-hours increase, resulting in a high cost.

[0005] Therefore, an object of the present invention is to reduce the manufacturing cost of an electrical connection box that always holds a fuse puller.

Means for Solving the Problems

[0006] The electrical connection box of the present invention includes a frame, a fuse assembled to the frame directly or via a resin block, and a fuse puller that is a jig for pulling out the fuse from the frame. The fuse puller is integrally formed with the frame and is connected to the frame via a fragile part that allows the fuse puller to be easily separated from the frame. two connected to the frame via a fragile partand the fuse puller has a pair of clamping plates, a spring portion connecting the middle portions of these clamping plates, an engaging convex portion and a rib provided at the tip of each clamping plate, and in the fuse puller, the base end portion of one clamping plate is continuous with one weak portion, the middle portion of the other clamping plate is continuous with the other weak portion, and a rib protruding toward the base end portion of the other clamping plate is provided on the wall where the other weak portion in the frame is provided It is characterized by the following.

Advantages of the Invention

[0007] According to the present invention, the manufacturing cost of an electrical junction box that always holds a fuse puller can be reduced.

Brief Description of the Drawings

[0008]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Modes for Carrying Out the Invention

[0009] The “electrical junction box” according to an embodiment of the present invention will be described with reference to FIGS. 1 to 9.

[0010] FIG. 1 is a plan view of a conventional electrical connection box that is a premise of the present invention. This electrical connection box 501 includes a frame 502, resin blocks 503a, 503b, 503c, 503d assembled to the frame 502, electronic components such as fuses and relays assembled to the mounting portions 31, 32 of these resin blocks 503a, 503b, 503c, 503d, and a fuse puller housed in the frame 502.

[0011] The frame 502 is a resin molded product obtained by injection molding using a mold. This frame 502 has a rectangular tube-shaped peripheral wall 21, a plurality of partition walls 22 that partition the inside of the peripheral wall 21 into a plurality of spaces, a fixing portion 23 to the vehicle body provided on the outer surface of the peripheral wall 21, and the like. Resin blocks 503a, 503b, 503c, 503d, etc. are respectively assembled to each space partitioned by the plurality of partition walls 22. Also, the reference symbol S in FIG. 1 is a dead space where no components are assembled. The electrical connection box 1 according to an embodiment of the present invention is configured to utilize this dead space S as a molding and storage space for the fuse puller.

[0012] The electrical connection box 1 shown in FIGS. 2, 8, and 9 includes a frame 2 in which the dead space S portion is modified, a plurality of resin blocks assembled to the frame 2, electronic components such as fuses and relays assembled to the mounting portions 31, 32 of these resin blocks, and a fuse puller 4 that is a jig for pulling out the fuses. Also, only one of the plurality of resin blocks, the resin block 3, is shown, and the others are omitted from the illustration.

[0013] The frame 2 has the same configuration as the frame 502 in FIG. 1 except for the dead space S portion. The fuse puller 4 is integrally molded with the frame 2. That is, when the frame 2 is injection molded, it is molded by the same injection mold.

[0014] As shown in FIGS. 3 and 4, the fuse puller 4 is provided inside the partition wall 22 that constitutes the dead space S, and is connected to the frame 2 via the weak portions 5a and 5b that enable the fuse puller 4 to be easily separated from the frame 2. The weak portions 5a and 5b are formed in a tapered protrusion shape, and the fuse puller 4 is connected to the tip portions thereof.

[0015] Also, a new partition wall 24 is added inside the partition wall 22 that constitutes the dead space S, and the dead space S is further partitioned by this partition wall 24. One of the weak portions 5a is provided on this partition wall 24, and the other weak portion 5b is provided on the partition wall 22 facing the partition wall 24.

[0016] As shown in FIG. 7, the fuse puller 4 has a pair of clamping plates 41, a curved spring portion 42 that connects the middle portions of these clamping plates 41, an engaging convex portion 44 and a rib 45 provided at the tip portions 41a of each clamping plate 41, and an anti-slip protrusion 43. The engaging convex portion 44 is a portion that engages with the fuse, and the rib 45 is a portion that positions the fuse between it and the engaging convex portion 44. The anti-slip protrusion 43 is provided on the base end portion 41b side of each clamping plate 41. The fuse puller 4 is pinched so that the base end portions 41b of the pair of clamping plates 41 approach each other, whereby the tip portions 41a move away from each other. When the force applied to the base end portion 41b is released from this state, the pair of clamping plates 41 return to their original state. The fuse puller 4 is used by sandwiching the fuse between the tip portions 41a of the pair of clamping plates 41 and pulling out the fuse from the resin block with each engaging convex portion 44 engaged with the fuse.

[0017] In the above fuse puller 4, the base end portion 41b of one clamping plate 41 is continuous with one weak portion 5a, and the middle portion of the other clamping plate 41 is continuous with the other weak portion 5b. Before being separated from the frame, a spring portion 42 is located between one weak portion 5a and the other weak portion 5b in the fuse puller 4. Further, on the partition wall 22 provided with the other weak portion 5b, a rib 25 for facilitating the separation of the fuse puller 4 is provided. The rib 25 is located on the side of the base end portion 41b of the clamping plate 41 rather than the weak portion 5b and is not connected to the fuse puller 4.

[0018] When separating the above fuse puller 4 from the frame 2, for example, as shown in FIG. 5, the tip portions 41a of the pair of clamping plates 41 are rotated in the direction of the arrow to separate them from the partition wall 22 provided with the weak portion 5b. Then, as shown in FIG. 6, one clamping plate 41 is separated from one weak portion 5a, and the other clamping plate 41 is in a state of abutting against the rib 25. From this state, using the principle of a lever, the base end portion 41b of the other clamping plate 41 is brought closer to the partition wall 22 provided with the weak portion 5b. As a result, the other clamping plate 41 is separated from the other weak portion 5b, and the fuse puller 4 is separated from the frame 2.

[0019] Also, as shown in FIGS. 2 and 8, a fuse puller storage portion 34 is arranged directly below the fuse puller 4 in a state where it is not separated from the frame 2. This fuse puller storage portion 34 is provided in the resin block 3. That is, the resin block 3 is obtained by adding an extension portion 33 extending toward the dead space S to the resin block 503a in FIG. 1 and further adding the fuse puller storage portion 34 to this extension portion 33. Due to the presence of this fuse puller storage portion 34, the extension portion 33, and the partition wall 24, the space through which the fuse puller 4 can pass downward in the dead space S is eliminated, and these also function as a structure for preventing the fuse puller 4 from falling when separating it from the frame 2.

[0020] Such an electrical connection box 1 is shipped with the fuse puller 4 connected to the frame 2. When fuse replacement is required, the fuse puller 4 is separated from the frame 2 by the user. After the fuse puller 4 has been used for fuse replacement, it is stored in the fuse puller storage section 34 as shown in FIG. 9. Thus, the fuse puller 4 is always held within the frame 2 except during fuse replacement.

[0021] By integrally molding the fuse puller 4 with the frame 2 in the above electrical connection box 1, it is not necessary to separately manufacture, manage the parts, and assemble the fuse puller 4 to the frame 2, and the manufacturing cost can be reduced. Furthermore, in this example, since the fuse puller 4 is provided in the dead space S of the conventional electrical connection box 501, the above structure is realized with minimal changes.

[0022] In the above-described embodiment, the fuse is assembled to the frame via a resin block, but in the present invention, the fuse may be directly assembled to the frame.

[0023] Note that the above-described embodiment merely shows a representative form of the present invention, and the present invention is not limited to this embodiment. That is, various modifications can be made and implemented without departing from the gist of the present invention. As long as the configuration of the present invention is still provided by such modifications, of course, it is included in the scope of the present invention.

Explanation of reference numerals

[0024] 1 Electrical connection box 2 Frame 3 Resin block 4 Fuse puller 5a, 5b Weak part 34 Fuse puller storage section

Claims

1. A frame, a fuse assembled to the frame directly or via a resin block, and a fuse puller which is a jig for pulling out the fuse from the frame, wherein the fuse puller is integrally formed with the frame and is connected to the frame via two weak portions that enable easy separation of the fuse puller from the frame, the fuse puller having a pair of clamping plates, a spring portion connecting intermediate portions of these clamping plates, and engaging protrusions and ribs provided at tip portions of each clamping plate, wherein a base end portion of one clamping plate is connected to one weak portion and an intermediate portion of the other clamping plate is connected to the other weak portion, and a rib protruding toward the base end portion of the other clamping plate is provided on a wall of the frame where the other weak portion is provided. An electrical connection box characterized by the above.

2. An electrical connection box according to claim 1, further comprising a fuse puller storage portion capable of storing the fuse puller separated from the frame, wherein the fuse puller storage portion is disposed directly below the fuse puller in a state where the fuse puller is not separated from the frame. An electrical connection box according to claim 1, characterized by the above.

3. An electrical connection box according to claim 2, further comprising a resin block assembled to the frame, wherein the fuse puller storage portion is provided on the resin block. An electrical connection box according to claim 2, characterized by the above.

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