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 fuse assembled to the frame 2; and a fuse puller 4 for pulling off the fuse. The fuse puller 4 is integrally formed with the frame 2, and is communicated with a vertical surface 62 of the frame 2 via a pair of fragile parts 5. Also, in the fuse puller 4, a spring part 42 is positioned on an upper side of an upper end of a plate part 7 stood from a horizontal surface 61 of the frame 2, and a virtual extension part obtained by virtually extending a plate part 7 to the fuse puller 4 side is communicated with a vertical surface 62 in a state where the virtual extension part passes through a pair of nipping plates 41. When the fuse puller 4 is laid on the horizontal surface 61 side and separated from the frame 2, fall of the fuse puller 4 is prevented by positioning the plate part 7 between the pair of nipping plates 41.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to an electrical junction box to be mounted on an automobile. [Background technology]

[0002] As an example of an electrical junction box, Patent Document 1 discloses an electrical junction box in which a fuse puller storage section is integrally formed with a frame to which fuses and relays are attached, and in which a fuse puller is always stored. The fuse puller is a molded resin part and is a tool for pulling the fuse out of the frame. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2010-124561 Summary of the Invention [Problem to be solved by the invention]

[0004] In the above-described prior art, the provision of a fuse puller as a component of the electrical junction box increases the number of parts and the number of assembly steps, resulting in a problem of higher costs.

[0005] SUMMARY OF THE INVENTION It is therefore an object of the present invention to reduce the manufacturing costs of an electrical junction box that always has a fuse puller. [Means for solving the problem]

[0006] The electrical connection box of the present invention comprises a frame, a fuse assembled to the frame, and a fuse puller which is a tool for extracting the fuse from the frame, wherein the frame has a horizontal surface, a vertical surface hanging down from the edge of the horizontal surface, and a plate portion erected from the horizontal surface, the fuse puller is integrally molded with the frame and is connected to the vertical surface via a weak portion which allows the fuse puller to be easily separated, the fuse puller has a pair of clamping plates and a spring portion connecting these clamping plates, and when the fuse puller is not separated from the frame, the spring portion is positioned above the upper end of the plate portion, and an imaginary extension portion which virtually extends the plate portion toward the fuse puller passes between the pair of clamping plates. [Effects of the Invention]

[0007] According to the present invention, it is possible to reduce the manufacturing cost of an electrical junction box that always has a fuse puller. [Brief explanation of the drawings]

[0008] [Figure 1] 1 is a plan view of a conventional electrical junction box that is not the present invention but is a premise of the present invention. [Figure 2] 1 is a perspective view showing a main part of an electrical junction box according to an embodiment of the present invention. [Figure 3] FIG. 3 is a plan view of the electrical junction box of FIG. 2. [Figure 4] 4 is a diagram illustrating an example of a method for disconnecting the fuse puller of FIG. 3. FIG. [Figure 5] 5 is a diagram showing the fuse puller of FIG. 4 in a state where it is tilted to a horizontal surface. [Figure 6] 6 is a diagram showing a movement trajectory of the fuse puller in FIG. 5 when it is separated from the frame. [Figure 7] 6 is a diagram showing the fuse puller of FIG. 5 separated from the fragile portion and placed on a horizontal surface. [Figure 8] FIG. 5 is a perspective view of the fuse puller separated from the frame of FIG. 4. [Figure 9]9 is a perspective view showing a state in which the fuse puller of FIG. 8 is housed in a frame. [Figure 10] FIG. 10 is a plan view of the electrical junction box of FIG. 9. DETAILED DESCRIPTION OF THE INVENTION

[0009] An "electrical junction box" according to one embodiment of the present invention will be described with reference to FIGS.

[0010] 1 is a plan view of a conventional electrical junction box on which the present invention is based. This electrical junction box 501 includes a frame 502, resin blocks 503a, 503b, 503c, and 503d attached to the frame 502, electronic components such as fuses and relays attached to the mounting portions 31 and 32 of the resin blocks 503a, 503b, 503c, and 503d, a fuse puller housed in the frame 502, and a cover attached to the top surface of the frame 502 to cover the electronic components.

[0011] The frame 502 is a resin molded product obtained by injection molding using a mold. The frame 502 has a rectangular cylindrical peripheral wall 21, a plurality of partition walls 22 that divide the inside of the peripheral wall 21 into a plurality of spaces, and a fixing portion 23 for attaching to the vehicle body provided on the outer surface of the peripheral wall 21. Resin blocks 503a, 503b, 503c, 503d, etc. are assembled in each of the spaces divided by the plurality of partition walls 22. The symbol S in FIG. 1 denotes dead space where no parts can be assembled. In an electrical junction box 1 according to one embodiment of the present invention, this dead space S is utilized for molding and storing a fuse puller.

[0012] The electrical connection box 1 shown in Figures 2 and 3 includes a frame 2 in which the dead space S has been modified, a plurality of resin blocks assembled to the frame 2, electronic components such as fuses and relays assembled to mounting portions 31 and 32 (see Figure 1) of these resin blocks, a fuse puller 4 which is a tool for pulling out the fuses, and a cover assembled to the top surface of the frame 2 to cover the electronic components, fuse puller 4, etc.

[0013] The frame 2 has the same configuration as the frame 502 in Figure 1 except for the dead space S. The fuse puller 4 is molded integrally with the frame 2. That is, it is molded using the same injection mold when the frame 2 is injection molded. The fuse puller 4 can be used by separating it from the frame 2.

[0014] The fuse puller 4 is provided inside the partition walls 22 that form the dead space S. In detail, a connecting wall 6 that connects the partition walls 22 together is added inside the partition walls 22 that form the dead space S, and the fuse puller 4 is connected to a vertical surface 62 of this connecting wall 6.

[0015] 8, the fuse puller 4 has a pair of clamping plates 41, a curved spring portion 42 connecting the base ends 41b of the clamping plates 41, and a protrusion 48 extending from one of the clamping plates 41 to the opposite side of the other clamping plate 41. The tip end 41a of each clamping plate 41 is provided with an engaging protrusion 44 that engages with a fuse. This fuse puller 4 is used by clamping a fuse between the tip ends 41a of the pair of clamping plates 41 and pulling the fuse out of the resin block with each engaging protrusion 44 engaged with the fuse.

[0016] The connecting wall 6 has a horizontal surface 61 that faces the cover attached to the frame 2, and a vertical surface 62 that hangs down from the end of the horizontal surface 61. The vertical surface 62 faces one of the partition walls 22 that form the dead space S, forming a gap between the vertical surface 62 and the partition wall 22.

[0017] Additionally, the dead space S is provided with a plate portion 7 erected from the end of the horizontal surface 61 on the vertical surface 62 side, and an erect portion 8 erected from a portion of the horizontal surface 61 away from the vertical surface 62. The plate portion 7 is composed of a plate portion main body 71 and a claw portion 71 provided at the upper end of the plate portion main body 71. A groove 81 extending in the vertical direction is formed in the erect portion 8. Furthermore, a fuse puller mounting surface 26 is formed on the partition wall 22 facing the vertical surface 62, at the same height as the horizontal surface 61.

[0018] 9 and 10 , the plate portion 7, the standing portion 8, and the fuse puller mounting surface 26 function as a holding means for the fuse puller 4 separated from the frame 2. That is, the plate portion 7 has the plate portion main body 71 positioned between a pair of clamping plates 41 placed on the horizontal surface 61, and the claw portions 72 position one of the clamping plates 41 between the horizontal surface 61. In this state, the protruding portion 48 of the fuse puller 4 is positioned within the groove 81 of the standing portion 8, and the tip portions 41 a of the pair of clamping plates 41 are placed on the fuse puller mounting surface 26.

[0019] The fuse puller 4 is connected to the vertical surface 62 via a pair of weak portions 5 that allow the fuse puller 4 to be easily separated. Each weak portion 5 is formed in a tapered protrusion shape, and each clamping plate 41 is connected to its tip. The fuse puller 4 is connected to the vertical surface 62 with the spring portion 42 located above the upper end of the plate portion 7 and with an imaginary extension of the plate portion 7 toward the fuse puller 4 passing between the pair of clamping plates 41.

[0020] When separating the fuse puller 4 from the frame 2, for example, it is done as shown in Figures 4 to 7. That is, as shown in Figure 4, the portion of the fuse puller 4 above the horizontal surface 61 is pressed toward the horizontal surface 61, and the intermediate portions of the pair of clamping plates 41 are brought into contact with the corners of the horizontal wall 6 (the portions where the horizontal surface 61 and the vertical surface 62 intersect) as shown in Figure 5. Then, from this state, by utilizing the principle of leverage, the base ends 41b of the pair of clamping plates 41 are brought closer to the horizontal surface 61 as shown in Figure 6, thereby separating them.

[0021] This allows the fuse puller 4 to be easily separated without using tools, and by positioning the plate portion 7 between a pair of clamping plates 41 as shown in Figure 7, it is possible to prevent the fuse puller 4 from falling below the frame 2 from between the vertical wall 62 and the partition wall 22.

[0022] Such an electrical junction box 1 is shipped with the fuse puller 4 connected to the frame 2, and when a fuse needs to be replaced, the user separates the fuse puller 4 from the frame 2. After being used to replace the fuse, the fuse puller 4 is held by the plate portion 7, the standing portion 8, and the fuse puller mounting surface 26 and stored in the dead space S, as shown in Figures 9 and 10. In this way, the fuse puller 4 is always held within the frame 2 except when the fuse is being replaced.

[0023] In the above-described electrical junction box 1, the fuse puller 4 is integrally molded with the frame 2, thereby eliminating the need to separately manufacture the fuse puller 4, manage the parts, and assemble it into the frame 2, thereby reducing manufacturing costs. Furthermore, in this example, the fuse puller 4 is provided in the dead space S of the conventional electrical junction box 501, so the above-described structure is realized with minimal changes.

[0024] Although the protrusion 48, the erected portion 8, and the fuse puller mounting surface 26 of the fuse puller 4 are not essential components of the present invention, their presence allows the separated fuse puller 4 to be stored in the dead space S without falling between the vertical wall 62 and the partition wall 22 and below the frame 2.

[0025] 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 assembled directly to the frame.

[0026] The above-described embodiment merely shows a typical form of the present invention, and the present invention is not limited to this embodiment. In other words, the present invention can be implemented with various modifications within the scope of the gist of the present invention. As long as such modifications still include the configuration of the present invention, they are of course included in the scope of the present invention. [Explanation of symbols]

[0027] 1 Electrical junction box 2 frames 4 fuse pullers 5 Weakened parts 7 Board part 41 Holding plate 42 Spring part 61 horizontal plane 62 Vertical plane

Claims

1. The fuse puller includes a frame, a fuse mounted in the frame, and a fuse puller that is a tool for pulling out the fuse from the frame. The frame has a horizontal surface, a vertical surface hanging down from an end of the horizontal surface, and a plate portion standing upright from the horizontal surface, the fuse puller is integrally molded with the frame and is connected to the vertical surface via a weakened portion that allows the fuse puller to be easily separated; The fuse puller has a pair of clamping plates and a spring portion connecting the clamping plates together, When the fuse puller is not separated from the frame, the spring portion is located above the upper end of the plate portion, and an imaginary extension of the plate portion toward the fuse puller passes between the pair of clamping plates. An electrical junction box characterized by:

2. A claw portion is provided on the upper end of the plate portion, The fuse puller separated from the frame can be placed on the horizontal surface, and the plate portion can be passed between the pair of clamping plates, and the fuse puller can be positioned between the claw portion and the horizontal surface.

2. The electrical junction box according to claim 1, wherein the electrical junction box is a junction box having a plurality of electrical connectors.

3. the fuse puller has a protrusion extending from one clamping plate to the opposite side to the other clamping plate, the frame has an upright portion that stands upright from the horizontal surface, and a groove that extends in the vertical direction is formed in the upright portion; The fuse puller separated from the frame can be placed on the horizontal surface, and the plate portion can be passed between the pair of clamping plates, with the protruding portion positioned in the groove of the erected portion.

3. The electrical junction box according to claim 1 or 2.

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