JP2011010514A - Electrical connection box - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electrical connection box in which the number of mountable electrical parts can be increase without increasing a horizontal projection area and is excellent in maintainability.SOLUTION: The electrical connection box 1 includes a frame-like case body 2, a plurality of cassette blocks 3, 4, and a plurality of electric wires 5 connected to the lower surface side of the cassette blocks 3, 4. A plurality of the cassette blocks 3, 4 are stacked on the case body 2 in two steps of upper and lower sides and locking parts 11 on which the cassette blocks 3, 4 are installed at positions where space S for accommodating the electric wires 5 of the upper side cassette block 3 is formed, are provided between cassette blocks 3, 4 stacked mutually. Furthermore, the upper side cassette block 3 is accommodated inside the case body 2 from the upper surface side of the case body 2 and attached to the case body 2.

Description

  The present invention relates to an electric junction box attached to an engine room of an automobile.

  A variety of electronic devices are mounted on automobiles. In order to supply electric power to these various electronic devices, the automobile has an electrical junction box configured by integrating electrical components such as fuses and relays at appropriate positions between the power source and the electronic device. (For example, refer to Patent Document 1).

  The electrical junction box is also called a junction block, a fuse block, or a relay box. In the present specification, the junction block, the fuse block, and the relay box described above are collectively referred to as an electric connection box.

  Various types of electrical connection boxes are used depending on the type of vehicle. For example, a frame-like case main body and a cassette block attached to the inside of the case main body, as shown in Patent Document 1, A device having an upper cover attached to the upper surface side of the case body and a lower cover attached to the lower surface side of the case body is generally known.

  The cassette block is formed in a substantially block shape with a synthetic resin, and a mounting surface on which the electrical component is mounted is provided on the upper surface side, and an electric wire attaching portion to which an electric wire is attached is provided on the lower surface side. Further, the cassette block is attached to the case body in such a direction that the mounting surface is positioned on the upper surface side of the case body in consideration of maintainability.

  In the electrical junction box, the upper cover is attached to the upper surface side of the case body to which the cassette block is attached, and the lower cover is attached to the lower surface side of the case body, so that the interior of the electrical junction box is protected. The electrical junction box is provided with a plurality of locking means for fixing the upper cover and the case main body, and the lower cover and the case main body. In addition, the upper cover is removed from the case body during maintenance, but the lower cover has no opportunity to be removed from the case body except when the automobile is disassembled. The locking force is set larger than that of the locking means for fixing the upper cover and the case main body, and the number thereof is set larger than that of the locking means for fixing the upper cover and the case main body.

  In addition, since the mounting surface on which the electrical parts of the cassette block are mounted is exposed on the upper surface side of the case body by removing the upper cover from the case body, the electrical junction box can be removed without removing the cassette block from the case body. Maintenance such as component replacement can be easily performed. Thus, in consideration of maintainability, the conventional electrical junction box has a structure attached to the case body with the mounting surface of the cassette block positioned in the upper surface side of the case body as described above. It was.

JP 2007-68274 A

  However, the above-described conventional electrical junction box has the following problems. In other words, with the recent increase in the number of electronic devices mounted on automobiles, the number of electrical components mounted on the electrical junction box tends to increase. If it is added, the horizontal projection area of the electric junction box increases, and there is a problem that it is difficult to secure the installation space in the car body.

  As a solution to this problem, for example, it is possible to divide the cassette block into a plurality of parts, and to divide each divided cassette block vertically, but simply by stacking a plurality of cassette blocks vertically, Problems such as poor maintainability of the lower cassette block, and the electric wires attached to the upper cassette block come into contact with the electric components attached to the lower cassette block, and external force acts on the electric components. As a result, problems such as adversely affecting the electrical connection locations of the electric wires and electrical components and the electrical components themselves will occur.

  Therefore, an object of the present invention is to provide an electrical junction box that can increase the number of electrical components mounted without increasing the horizontal projection area and is excellent in maintainability.

  In order to achieve the above object, the invention described in claim 1 includes a frame-shaped case body, a cassette block on which a plurality of electrical components are mounted and attached to the inside of the case body, and a lower surface side of the cassette block. An electrical junction box having a plurality of electric wires attached to the case body, wherein the cassette body is attached to the case body in a plurality of upper and lower stages, and an upper cassette is placed between the cassette blocks stacked on each other. A plurality of lock portions for attaching the cassette block are provided at a position where a space for accommodating the electric wire of the block is formed, and an upper cassette block other than the lowest step is inserted into the case body from the upper surface side of the case body. The electrical connection box is housed in the case and attached to the case body.

  The invention described in claim 2 is the invention described in claim 1, wherein the electric wires of the cassette blocks on the upper side of the cassette blocks stacked on each other are bundled together, and the electric wire bundle is The passage is formed on the outside of the lower cassette block and in the corner of the case body, and is passed through the lower surface of the lower cassette block.

  The invention described in claim 3 is the invention described in claim 1 or 2, wherein the cassette block on the lower side of the cassette blocks stacked on each other includes a mounting surface on which the electrical component is mounted. A guide wall that stands up from the mounting surface and guides the electrical component to the mounting surface, the height of the guide wall from the mounting surface being from the mounting surface of the electrical component It is characterized in that it is formed higher than the height of.

  According to the invention described in claim 1, the plurality of cassette blocks are attached to the case main body in a plurality of upper and lower stages, and the cassette block on the upper stage side is placed between the stacked cassette blocks. A plurality of lock portions for attaching the cassette block is provided at a position where a space for accommodating the electric wire is formed, and an upper cassette block other than the lowest step is accommodated in the case main body from the upper surface side of the case main body. Thus, the number of electrical components mounted can be increased without increasing the horizontal projection area of the case body. In addition, the upper cassette block can be removed from the case body by moving the upper cassette block upward from the case body to perform maintenance work such as replacing electrical components mounted on the lower cassette block. This can be done easily without removal. Therefore, the number of electrical components mounted can be increased without increasing the horizontal projection area, and an electrical junction box excellent in maintainability can be provided.

  According to the invention described in claim 2, the electric wires of the upper cassette blocks of the cassette blocks stacked on each other are bundled into one bundle, and the electric wire bundle is outside the lower cassette block. And the passage formed in the corner of the case body is passed through the lower surface side of the lower cassette block, so that maintenance work such as replacement of electrical components mounted on the lower cassette block is performed. When performing, the electric wire attached to the upper cassette block does not get in the way, and the maintenance work of the lower cassette block can be performed more easily. Further, the upper cassette block can be smoothly removed from the case body using the passage as a fulcrum, and the maintenance work for the lower cassette block can be performed more easily.

  According to the invention described in claim 3, the cassette block on the lower side of the cassette blocks that are stacked on each other includes a mounting surface on which the electrical component is mounted, and a standing surface from the mounting surface. The guide wall is guided to the mounting surface, and the height of the guide wall from the mounting surface is higher than the height of the electrical component from the mounting surface. It is possible to prevent the electric wire attached to the cassette block on the side from coming into contact with the electric components attached to the lower cassette block, and to prevent adverse effects on the electric connection portions of the electric wires and electric parts and the electric components themselves.

It is sectional drawing which shows the electrical junction box which concerns on one embodiment of this invention. FIG. 2 is an exploded view of the electrical junction box shown in FIG. 1. It is sectional drawing along the AA line in FIG. It is sectional drawing along the BB line of the cassette block of the lower stage shown by FIG. FIG. 5 is a plan view of the lower cassette block shown in FIG. 4 as viewed from the direction of arrow C in FIG. 4. It is explanatory drawing for demonstrating the maintenance method of the electrical junction box shown by FIG.

  An electrical junction box according to an embodiment of the present invention will be described with reference to FIGS.

  The electric junction box 1 of the present invention is attached to an engine room of an automobile and supplies electric power to various electronic devices mounted on the automobile. In the present specification, the junction block, the fuse block, and the relay box are collectively referred to as an “electric connection box”.

  As shown in FIGS. 1 to 3, the electrical junction box 1 includes a frame-shaped case body 2, a plurality of cassette blocks 3 and 4 attached to the inside of the case body 2, and the cassette blocks 3 and 4. A plurality of electric wires 5 attached to the lower surface side of the case body 2, an upper cover (not shown) attached to the upper surface side of the case body 2, and a lower cover (not shown) attached to the lower surface side of the case body 2.

  1 to 6 indicate the direction parallel to the vertical direction and the height direction of the case body 2, and the arrow X indicates the direction parallel to the horizontal direction. The width direction of the case body 2 is shown, and the arrow Z indicates the direction parallel to the horizontal direction and the longitudinal direction of the case body 2. In the present invention, the “vertical direction” means the arrow Y direction, that is, the height direction of the case body 2, and the upper side in the paper surface direction of the arrow Y direction in FIGS. The lower side in the paper surface direction in the arrow Y direction with respect to this “upper” is expressed as “lower”.

  The case body 2 includes a plurality of frame-shaped peripheral walls 21 and partition walls 22 that partition a space surrounded by the peripheral walls 21. The plurality of peripheral walls 21 and the partition walls 22 are integrally formed of synthetic resin. A plurality of lock portions 11 to which the cassette blocks 3 and 4 are attached are provided on the inner surfaces of the peripheral wall 21 and the partition wall 22. The locking portion 11 includes a protruding portion 11b formed in a protruding shape, and a pair of guide rails 11a provided at positions where the protruding portion 11b is positioned between the protruding portions 11b and extending along the arrow Y. .

  The cassette block 3 is formed of a synthetic resin, and integrally includes a main body portion 30 formed in a block shape, a plurality of guide walls 31, 32, 33, and a plurality of locked portions 12. Yes.

  The main body portion 30 is provided on the upper surface side thereof, and has a flat mounting surface 30a on which a plurality of electrical components 8, 9, 10 such as relays, fusible links, and fuses are mounted, and an arrow Y extending from the mounting surface 30a. And a plurality of electric wire attachment portions 34 provided in a recessed manner along the line. The electric wire attaching portion 34 receives and attaches the terminal fitting 7 attached to the terminal of each electric wire 5 from the lower surface side of the main body portion 30, and connects the terminal portions of the electrical components 8, 9, 10 to the upper surface side of the main body portion 30, That is, it is received and accommodated from the mounting surface 30a side.

  Further, in the present embodiment, as shown in FIG. 1, the terminal fitting 7 is formed in a female shape and accommodates the male terminal portions of the electrical components 8, 9, and 10 on the inner side. The electrical connection part 7a connected electrically and the electric wire connection part 7b electrically connected with this core wire by caulking the core wire of the said electric wire 5 exposed in the terminal of the electric wire 5 are comprised. However, in the present invention, the terminal fitting includes the electrical connection portion that is formed in a male shape and is inserted into the female terminal portion of the electrical component, and the wire connection portion 7b. It may be a configuration.

  The plurality of guide walls 31, 32, 33 are erected in a cylindrical shape from the mounting surface 30 a. These guide walls 31, 32, and 33 are electrically connected so that the terminal portion is accommodated straightly along the arrow Y in the electric wire mounting portion 34 as the electrical components 8, 9, and 10 are brought closer to the mounting surface 30 a. The parts 8, 9, and 10 are guided to the mounting surface 30a.

  The plurality of locked portions 12 are provided on the side surface of the main body 30 as shown in FIG. The locked portion 12 includes a protruding portion 12b formed in a protruding shape, and a pair of guide rails 12a provided at positions where the protruding portion 12b is positioned between them. The protrusion 12 b is engaged with the protrusion 11 b of the lock portion 11 provided on the case body 2. The pair of guide rails 12a are positioned between the pair of guide rails 11a of the lock portion 11 and slide along the arrow Y between the pair of guide rails 11a.

  2, the cassette block 3 described above is accommodated in the case body 2 from the upper surface side of the case body 2 along the arrow Y, with the mounting surface 30a positioned on the upper surface side of the case body 2, as shown in FIG. The locked portion 12 is attached to the inside of the case body 2 by being locked to the lock portion 11. At this time, the pair of guide rails 12 a of the locked portion 12 slides along the arrow Y between the pair of guide rails 11 a of the locking portion 11, so that the protruding portion 12 b of the locked portion 12 protrudes from the locking portion 11. It is guided to a position that is locked to the portion 11b. Further, since the protrusion 12b is locked to the protrusion 11b, the cassette block 3 is prevented from being displaced in the arrow Y direction with respect to the case body 2, and the pair of guide rails 12a is paired with the pair of guide rails 11a. By being positioned between, the cassette block 3 is prevented from being displaced in the arrow X direction or the arrow Z direction with respect to the case body 2.

  The cassette block 4 is formed of a synthetic resin in the same manner as the cassette block 3 described above, and is provided on the main body portion 40 formed in a block shape, a plurality of guide walls 41 and 42, and the side surface of the main body portion 40. And a plurality of locked portions 12 formed integrally.

  The main body portion 40 is provided on the upper surface side thereof, and a flat mounting surface 40a on which the plurality of electrical components 8 are mounted, and a plurality of electric wire mounting portions 44 provided in a recess along the arrow Y from the mounting surface 40a. And have. The electric wire attachment portion 44 receives and attaches the terminal fitting 7 attached to the terminal of each electric wire 5 from the lower surface side of the main body portion 40, and attaches the terminal portion of the electric component 8 to the upper surface side of the main body portion 40, that is, the attachment surface 40a. Accept and accommodate from the side.

  The plurality of guide walls 41 and 42 are erected in a cylindrical shape from the mounting surface 40a. These guide walls 41, 42 allow the electric component 8 to be accommodated straight along the arrow Y in the electric wire mounting portion 44 as the electric component 8 approaches the mounting surface 40a. To guide.

  The cassette block 4 described above is accommodated in the case body 2 from the lower surface side of the case body 2 along the arrow Y, with the mounting surface 40a positioned on the upper surface side of the case body 2 as shown in FIG. The locked portion 12 is attached to the inside of the case body 2 by being locked to the lock portion 11. At this time, the protrusion 12b is locked to the protrusion 11b, whereby the cassette block 4 is prevented from being displaced in the arrow Y direction with respect to the case body 2, and the pair of guide rails 12a is paired with the pair of guide rails. By being positioned between 11a, the cassette block 4 is prevented from being displaced in the arrow X direction or the arrow Z direction with respect to the case body 2.

  Thus, in the electrical junction box 1 of the present invention, one cassette block 3 is attached to the upper surface side of the case body 2 by the lock portion 11, and the three cassette blocks 4 are respectively attached to the case body 2 by the lock portion 11. It is attached to the lower surface, that is, the lower side of the cassette block 3. Each of the three cassette blocks 4 is formed to be about one third of the size of the cassette block 3 and is attached at a position along the arrow X. That is, the electrical junction box 1 of the present invention has a plurality of cassette blocks 3 and 4 stacked in two upper and lower stages and attached in the case body 2. Furthermore, these cassette blocks 3 and 4 are attached to positions where a space S for accommodating the plurality of electric wires 5 of the upper cassette block 3 is formed between them.

  Further, the lock portion 11 to which the upper cassette block 3 is attached and the lock portion 11 to which the lower cassette block 4 is attached are provided at positions shifted from each other in the arrow X direction or the arrow Z direction. That is, in the present invention, the lock portion 11 to which the upper cassette block 3 is attached and the lock portion 11 to which the lower cassette block 4 is attached are displaced from each other in the arrow X direction or the arrow Z direction. Thus, a plurality of cassette blocks 3 and 4 can be attached to one case body 2 so as to be stacked in two upper and lower stages. Note that the case body 2 of the present invention is formed by an injection mold having a pulling direction of the arrow Y direction. Therefore, due to manufacturing problems, the plurality of lock portions 11 are arranged at positions aligned in a straight line in the arrow Y direction. Can not be provided.

  As described above, in the present invention, since the plurality of cassette blocks 3 and 4 are stacked in two upper and lower stages and mounted in the case main body 2, the case main body 2, that is, the electric connection box 1 can be electrically connected without increasing the horizontal projection area. The number of parts 8, 9, and 10 can be increased.

  In the present invention, a space S is formed between the upper cassette block 3 and the lower cassette block 4 to accommodate the plurality of electric wires 5 attached to the lower surface side of the upper cassette block 3. Therefore, interference between the plurality of electric wires 5 and interference between the electric wires 5 and the electrical component 8 mounted on the lower cassette block 4 can be reduced.

  The electric wire 5 attached to the upper cassette block 3 and the electric wire 5 attached to the lower cassette block 3 are both well-known covered electric wires. The terminal fittings 7 described above are attached to both ends of these electric wires 5.

  A plurality of electric wires 5 having one end attached to the lower surface side of the upper cassette block 3 or the lower surface side of the lower cassette block 4 are bundled as a bundle as shown in FIGS. The electric connection box 1 is drawn out through an electric wire outlet provided in a lower cover (not shown). The code | symbol 6 in FIG. 1 thru | or FIG. 3 represents the electric wire bundle comprised by bundling the some electric wire 5. FIG. The electric wire bundle 6 is bundled with an adhesive tape or a binding band (not shown). Further, a plurality of electric wires 5 having one terminal attached to the lower surface side of the upper cassette block 3 are provided at the corners of the case main body 2, that is, between the lower cassette block 4 and the peripheral wall 21 of the case main body 2. That is, a passage (that is, a space) W for passing the wire bundle 6 to the lower surface side of the lower cassette block 4 is formed. In addition, the plurality of electric wires 5 that pass through the passage W, that is, the electric wire bundle 6, are removed from the case main body 2 while the lower cassette block 4 is attached to the case main body 2. Sufficient work length is set to allow

  Thus, in the present invention, a plurality of electric wires 5 passed from the upper cassette block 3 side to the lower surface side of the lower cassette block 4 are bundled into one bundle, and the electric wire bundle bundled into one bundle 6 is formed in the corner of the case body 2, that is, between the cassette block 4 on the lower stage side and the peripheral wall 21 of the case body 2, so that the upper stage When the cassette block 3 on the side is attached to the case body 2, the extra length of the electric wire 5, that is, the electric wire bundle 6, can be easily stored in the passage W.

  Also, some of the electric wires 5 are connected to the electric parts 8, 9, 10 mounted on the upper cassette block 3 or between the electric parts 8, 9, 10 mounted on the upper cassette block 3. The electrical components 8 mounted on the cassette block 4 are electrically connected according to a predetermined pattern.

  The upper cover is attached to the upper surface side of the case body 2 so as to cover the electrical components 8, 9, and 10 attached to the upper cassette block 3. A plurality of locking means for fixing the upper cover and the case body 2 are provided on the upper cover and the upper end of the case body 2.

  The lower cover is attached to the lower surface side of the case body 2 to cover the lower cassette block 4 and the plurality of electric wires 5 attached to the lower surface side of the cassette block 4. The lower cover and the lower end of the case main body 2 are provided with a plurality of lock means for firmly fixing the lower cover and the case main body 2 without a gap. In addition, the locking means for fixing the lower cover and the case main body 2 may connect the upper cover and the case main body 2 so that rain water or water at the time of car washing may be applied to the joint portion between the lower cover and the case main body 2. The locking force is set to be larger than that of the locking means for fixing, and the number thereof is set to be larger than that of the locking means for fixing the upper cover and the case body 2. That is, the lower cover has almost no opportunity to be removed from the case main body 2 except when the automobile is disassembled, and is therefore made so that it cannot be easily removed from the case main body 2 in order to enhance waterproof performance. On the other hand, the upper cover and the upper cassette block 3 are made so that they can be easily removed from the case body 2 during maintenance.

  Further, the lower cassette block 4 described above is formed such that the height of the guide walls 41 and 42 from the mounting surface 40a is higher than the height of the electrical component 8 from the mounting surface 40a. That is, the upper ends 41a and 42a of the guide walls 41 and 42 are located above the upper surface 8a of the electrical component 8 in the arrow Y direction, as shown in FIG. Therefore, the electric wires 5 accommodated in the space S between the upper cassette block 3 and the lower cassette block 4 are, as shown in FIGS. 4 and 5, the upper ends 41 a and 42 a of the guide walls 41 and 42. And contact with the upper surface 8a of the electrical component 8 is prevented. In addition, the upper ends 41a and 42a of the guide walls 41 and 42 are provided with notches 42b for inserting a tool when replacing the electrical component 8 or for preventing erroneous assembly of the electrical component 8. The width of the notch 42b is smaller than the width of the wire bundle 6 in order to prevent the wire 5 from coming into contact with the upper surface 8a of the electrical component 8.

  In the present invention, the height of the guide walls 41 and 42 of the lower cassette block 4 from the mounting surface 40a is formed higher than the height of the electrical component 8 from the mounting surface 40a. It is possible to prevent the electric wire 5 attached to the cassette block 3 on the side from coming into contact with the electrical component 8 attached to the cassette block 4 on the lower stage, and adversely affect the electrical connection location of the electric wire 5 and the electrical component 8 and the electrical component 8 itself. That is, the disconnection of the electric wire 5 or the generation of smoke from the insulating sheath of the electric wire 5 due to the heat of the electric component 8 can be prevented.

  Then, the maintenance method of the electrical junction box 1 mentioned above is demonstrated.

  When performing maintenance work such as replacement of the electrical components 8, 9, and 10 mounted on the upper cassette block 3, the upper cover is removed from the case body 2 so that the mounting surface 30a of the upper cassette block 3 is removed. Since the electrical components 8, 9, and 10 mounted on the mounting surface 30a are exposed on the upper surface side of the case body 2, the maintenance work is performed without removing the cassette block 3 from the case body 2.

  When performing maintenance work such as replacement of the electrical component 8 mounted on the lower cassette block 4, the upper cover is removed from the case body 2, and then the upper cassette block 3 is shifted above the case body 2. Remove from the case body 2. By doing so, the mounting surface 40a of the lower cassette block 4 and the electrical component 8 mounted on the mounting surface 40a are exposed on the upper surface side of the case body 2, so that the cassette block 4 is removed from the case body 2. Without any maintenance work. When removing the cassette block 3 from the case body 2, as shown in FIG. 6, the cassette block 3 is smoothly removed from the case body 2 by shifting the cassette block 3 in the direction of arrow D with the passage W as a fulcrum. In addition, the electric wires 5 attached to the cassette block 3 do not overlap the lower cassette block 4, and the maintenance work of the lower cassette block 4 can be easily performed.

  Thus, in the present invention, the mounting direction of the electrical components 8, 9, 10 to the upper cassette block 3 and the mounting direction of the electrical component 8 to the lower cassette block 4 are parallel to the arrow Y. Therefore, when performing the maintenance work of the cassette blocks 3 and 4, the maintenance work can be easily performed from the upper surface side of the case body 2 without removing the cassette blocks 3 and 4 from the case body 2.

  Further, in the present invention, the upper cassette block 3 is shifted from the case main body 2 and removed from the case main body 2, so that when performing maintenance work on the lower cassette block 4, the upper cassette block 3 is removed. By removing 3 from the case body 2, maintenance work can be easily performed from the upper surface side of the case body 2 without removing the lower cassette block 4 from the case body 2.

  Furthermore, in the present invention, as described above, the plurality of electric wires 5 attached to the upper cassette block 3 are bundled together, and the electric wire bundle 6 is outside the lower cassette block 4 and Since the passage W formed in the corner of the case body 2 is passed through the lower surface side of the lower cassette block 4, the upper cassette block is used when performing maintenance work on the lower cassette block 4. The electric wire 5 attached to 3 does not get in the way, that is, does not overlap the lower cassette block 4, and the maintenance work of the lower cassette block 4 can be performed more easily. Further, the upper cassette block 3 can be smoothly removed from the case main body 2 with the passage W as a fulcrum, and the maintenance work of the lower cassette block 4 can be performed more easily.

  In the above-described embodiment, the example in which the cassette blocks 3 and 4 are stacked in two upper and lower stages and attached in the case body 2 has been described. However, in the present invention, the cassette body is stacked in three or more stages. It may be installed inside. In that case, the cassette block on the upper side other than the lowermost level may be accommodated in the case body from the upper surface side of the case body and attached to the case body.

  Moreover, in embodiment mentioned above, although the cassette blocks 3 and 4 were the structures which have the electric wire attachment parts 34 and 44 which attach the terminal metal fitting 7 attached to the terminal of the electric wire 5, in the present invention, In addition to the electric wire attachment portions 34 and 44, for example, the cassette block has a “bus bar attachment portion” for attaching a bus bar as a wiring member provided with a connection portion that is electrically connected to the terminal portions of the electrical components 8, 9, and 10, for example. Furthermore, the structure which it has may be sufficient.

  In addition, embodiment mentioned above only showed the typical form of this invention, and this invention is not limited to embodiment. That is, various modifications can be made without departing from the scope of the present invention.

DESCRIPTION OF SYMBOLS 1 Electrical junction box 2 Case main body 3, 4 Cassette block 5 Electric wire 6 Wire bundle 8, 9, 10 Electrical component 11 Lock part 40a Mounting surface 41, 42 Guide wall S Space W Passage

Claims (3)

In an electrical junction box having a frame-shaped case body, a cassette block on which a plurality of electrical components are mounted and attached to the inside of the case body, and a plurality of electric wires attached to the lower surface side of the cassette block,
A plurality of cassette blocks are attached to the case body in a plurality of upper and lower stages, and a space for accommodating the electric wires of the upper cassette block is formed between the cassette blocks stacked on each other. There are multiple locks for mounting the cassette block.
An electrical junction box, wherein an upper cassette block other than the lowermost stage is accommodated in the case body from the upper surface side of the case body and attached to the case body.   The electric wires of the upper cassette blocks of the cassette blocks stacked on each other are bundled together, and the electric wire bundle is formed outside the lower cassette block and at the corner of the case body. The electrical connection box according to claim 1, wherein the electrical connection box is passed through the lower surface side of the lower cassette block.   A cassette block on the lower side of the cassette blocks stacked on each other includes a mounting surface on which the electrical component is mounted, and a guide wall that stands from the mounting surface and guides the electrical component to the mounting surface. The height of the guide wall from the mounting surface is formed to be higher than the height of the electrical component from the mounting surface. Electrical junction box.

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