JP2013085404A - Electrical junction box - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electrical junction box capable of improving workability, reducing the number of components, and avoiding degradation of performance and durability.SOLUTION: An electrical junction box 1 comprises: a block 2; a housing 3, and a lid 4. The block 2 includes an electric component 5a. The housing 3 includes peripheral walls 10, 11, 12, and 13, and a rear wall 14. The housing 3 has an internal space 8 which is hollow and stores the block 2 together with an electric wire 7 which is led out of the block 2. The housing 3 has one opening 9 through which the block 2 is taken in and out of the internal space 8, facing the rear wall 14. The lid 4 closes the opening 9 so as to cover the block 2 in the internal space 8. The block 2 slides from the opening 9 to be stored in the internal space 8 in a posture in which a component mounting surface 2a of the block 2, having the electric component 5 mounted, faces the peripheral wall 11, which is one of the peripheral walls 10, 11, 12, and 13.

Description

  BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for establishing an electrical connection between various electric and electronic components mounted on a vehicle such as an automobile, and more particularly to an electric connection box containing a relay or a fuse that is blocked. .

  Hereinafter, detailed and detailed explanations with illustrations are omitted. For example, a vehicle such as an automobile has various electric / electronic components such as a headlamp, an engine starting motor, an air conditioner, an audio, and a navigation system. It is installed. In addition, a device for supplying electric power from these batteries to these various electric / electronic components or for establishing an electrical connection between these components is required. This device is generally called an electrical junction box.

  Currently, some electrical connection boxes employ a so-called frame structure, as in the invention disclosed in Patent Document 1 below, for example. When producing an electrical junction box having this frame structure, first, a cassette block is attached to a frame which is a box body. Next, various electrical parts such as relays and fuses are mounted on the cassette block. Thereby, one block for establishing connection with each terminal of other in-vehicle components is assembled. Finally, the upper cover is covered from above the frame and the lower cover is covered from below the frame to cover the entire block. Through the above steps, an electrical junction box including a relay or the like is produced.

  In such an electrical junction box having a frame structure, since the mounting space in the vehicle is limited, the height between the block and the lower cover is often minimized. For this reason, there are many things in which the storing property inside boxes, such as an electric wire pulled out from the block, is very bad. Further, for example, when the lower cover is put on the frame, an extra work such as pressing the electric wire is easily generated, and the workability is poor. Furthermore, problems such as biting of the electric wire are likely to occur when the electric wire is pressed. The biting of the electric wire causes a decrease in the performance, quality, reliability, durability, and the like of the electric wire. As a result, the performance, quality, reliability, durability, etc. of the electrical connection box and the automobile in which the electrical connection box is mounted are reduced.

  In addition, the frame-structured electric junction box requires at least three parts, that is, a frame, an upper cover, and a lower cover not only for assembling the housing of the box, but also for the blocks and various electric parts housed therein. . For this reason, the number of parts increases, the number of assembling points increases, and the structure of the parts becomes complicated. Therefore, the work man-hours and work time required for assembly are likely to increase, and workability is likely to deteriorate. As a result, the manufacturing cost is likely to increase. Furthermore, as the number of parts increases, the joints between the parts inevitably increase, so that water, dust, and the like easily enter the inside of the box. This ingress of water, dust and the like causes a decrease in performance, quality, reliability, durability, and the like of an electric connection box and an automobile on which the electric connection box is mounted, in the same manner as the above-described electric wire biting.

  An invention for solving the problem of the electrical junction box having such a frame structure is disclosed in, for example, Patent Document 2 below. In the invention of Patent Document 2, a portion corresponding to the frame into which the block of Patent Document 1 described above is fitted is formed integrally with the lower cover. The upper cover is formed in a size and shape that covers the entire block together with the lower cover when the upper cover is attached to the lower cover.

  Thus, in the invention of Patent Document 2, the frame and the lower cover are formed substantially integrally. For this reason, at first glance, it seems that the number of parts is certainly reduced by one compared to the invention of Patent Document 1. However, in the invention of Patent Document 2, what is housed in the shell made up of the upper cover and the lower cover is not only the block on which electrical parts such as relays and fuses are mounted, but also the electric that covers and covers this block inside. The entire connection box. That is, in the invention of Patent Document 2, the electrical junction box in the invention of Patent Document 1 is further covered with an upper cover and a lower cover from the outside. Therefore, in practice, the invention of Patent Document 2 is increased compared to the invention of Patent Document 1, rather than the number of parts. Therefore, in the invention of Patent Document 2, it is practically extremely difficult to solve the problem of the electrical connection box having the frame structure described above.

  Further, the invention of Patent Document 2 has a complicated structure in which an electrical junction box corresponding to the block according to the invention of Patent Document 1 is attached to the lower cover by inserting and rotating it from an oblique direction. For this reason, it is thought that workability | operativity rather has fallen compared with invention of patent document 1. FIG. In particular, in the invention of Patent Document 2, no consideration is given to problems such as the storage capacity of electric wires drawn out from the electrical junction box or various electrical components stored therein.

JP 2007-68275 A JP 2004-31842 A

  As described above, the conventional electrical junction boxes have problems of poor electrical wire storage and biting, and poor workability due to them. In addition, there have been problems such as an increase in work man-hours and work time due to a large number of parts, a rise in manufacturing cost, and a complicated structure of parts. Furthermore, there has been a problem that the performance, quality, reliability, durability, and the like are reduced due to the biting of the electric wires and the entry of water, dust, or the like into the box. There has been no electrical junction box that can solve these various problems collectively.

  The present invention has been made in order to solve the above-described problems. The object of the present invention is to improve workability and to reduce the number of parts, and to improve performance and durability. An object of the present invention is to provide an electrical junction box that is less likely to be degraded.

  In order to solve the problems and achieve the object, an electrical junction box according to claim 1 of the present application includes a block provided with electrical components, a peripheral wall, and a back wall, and the block is derived from the block. A housing having a hollow inner space for storing the electric wire together with the block, and a housing having one opening for inserting and removing the block in the inner space so as to face the inner wall, and closing the opening to close the opening in the inner space. A cover that covers the block, and the block slides from the opening in a posture in which the component mounting surface of the block on which the electrical component is provided faces one of the peripheral walls. It is characterized by being housed in an internal space.

  In the electrical junction box according to claim 1 having such a configuration, the block provided with the electrical components and the electric wire led out from the block are placed in the internal space of the casing constituted by the peripheral wall and the back wall. Slidably housed from one opening facing the back wall. At this time, the block is slid in a posture in which the component mounting surface to which the electric component is attached is opposed to one peripheral wall. Thereby, the electric wire led out from the block can be smoothly accommodated in the internal space of the housing together with the block. Moreover, the block and electric wire accommodated in the internal space of the housing can be covered with the lid and the housing by closing the opening with the lid. As a result, the storage workability of the block and the electric wire can be improved, and the occurrence of the biting of the electric wire can be suppressed. In addition, the number of parts is reduced because the parts that house and cover the block are composed of two points, the housing and the lid. Furthermore, since the housing is provided with only one opening, water, dust, and the like are unlikely to enter the internal space of the housing.

  In order to solve the problems and achieve the object, an electrical junction box according to claim 2 of the present application is the electrical junction box according to claim 1 of the present application, in which the electric wire in the internal space is connected to the housing. A lead-out hole to be drawn out to the outside of the body is formed in a joint portion between the casing and the lid portion.

  In the electrical junction box according to claim 2 configured as described above, when the block and the electric wire are slid and housed in the internal space of the housing, the lead-out hole formed in the mating portion of the housing and the lid portion An electric wire can be put together in the inside by a slide operation. For this reason, not only the electric wire storage workability but also the drawing workability is improved, and the occurrence of the electric wire biting is further suppressed.

  Moreover, in order to solve the said subject and achieve the objective, the electrical junction box which concerns on Claim 3 of this application is the electrical junction box of Claim 1 or 2 of this application, The said component mounting among the said surrounding walls The block in which a pair of guide portions are provided from the opening inside the pair of opposed peripheral walls on the side orthogonal to the surface, and the pair of guide receiving portions that engage with the guide portions are opposed to the pair of peripheral walls. Each of the guide receiving portions is slidably engaged with each of the guide portions to support the block.

  In the electrical junction box according to claim 3 configured as described above, when the block is slidably housed in the internal space of the housing, a pair of peripheral walls orthogonal to the component mounting surface of the block among the peripheral walls constituting the housing. The block is restricted from moving in two directions orthogonal to the sliding direction by the pair of guide portions provided inside the pair of peripheral walls. Thereby, the block is smoothly guided and held in the internal space of the housing. As a result, the block storage workability and vibration resistance are further improved.

  Moreover, in order to solve the said subject and achieve the objective, the electrical junction box which concerns on Claim 4 of this application is the electrical junction box of Claim 3 of this application. And a block support portion for supporting the end portion of the block facing the back wall.

  In the electrical junction box according to claim 4 configured as described above, the block accommodated in the internal space of the housing is further moved by the block support provided inside the back wall of the housing. Be regulated. Thereby, a block is more reliably hold | maintained in the internal space of a housing | casing. As a result, the vibration resistance of the block is further improved.

  Moreover, in order to solve the said subject and achieve the objective, the electrical junction box which concerns on Claim 5 of this application is the electrical junction box of any one of Claims 1-4 of this application. A block locking portion for locking an end surface on the opening side of the block in the internal space of the housing is provided inside any one of the peripheral walls. is there.

  In the electrical junction box according to claim 5 configured as described above, the block housed in the internal space of the housing is opened by the block engaging portion provided inside the peripheral wall constituting the housing. The side end face is locked. Thereby, a block is hold | maintained more reliably in the internal space of a housing | casing. As a result, the vibration resistance of the block is further improved.

  Moreover, in order to solve the said subject and achieve the objective, the electrical junction box which concerns on Claim 6 of this application is the electrical junction box of any one of Claims 1-5 of this application. The lid portion is integrally attached to the housing through a hinge so that the opening portion can be opened and closed.

  In the electrical junction box according to the sixth aspect of the present invention having such a configuration, the component that houses and covers the block is constituted by one point of the housing in which the lid portion is substantially integrated. As a result, the number of parts is further reduced.

  Moreover, in order to solve the said subject and achieve the objective, the electrical junction box which concerns on Claim 7 of this application is the electrical junction box of any one of Claims 1-6 of this application. A block pressing portion that presses the block toward the inner wall is provided on the inner surface of the lid portion so as to face the block in the internal space.

  In the electrical junction box according to claim 7 having such a configuration, the block housed in the internal space of the housing is moved in the sliding direction by the block pressing portion provided on the inner surface of the lid portion. More regulated. Thereby, a block is more reliably hold | maintained in the internal space of a housing | casing. As a result, the vibration resistance of the block is further improved.

  Moreover, in order to solve the said subject and achieve the objective, the electrical junction box which concerns on Claim 8 of this application is the electrical junction box of any one of Claims 2-7 of this application. The lead-out hole is formed in a peripheral wall of the inner space facing the end face on the electric wire outlet side of the block in the internal space, and a housing-side electric wire guide portion forming the lead-out hole is extended from the peripheral wall, and the lid portion When the opening is closed, a lid-side wire guide portion that is joined to the housing-side wire guide portion to form a cylindrical wire guide portion is provided on the lid portion.

  In the electrical junction box according to claim 8 configured as described above, when the lid portion closes the opening of the housing, the lid-side wire guide portion provided in the lid portion has a lead-out hole formed. It joins to the frame side electric wire guide part extended from the surrounding peripheral wall, and comprises a cylindrical electric wire guide part. Thereby, after the electric wire led out from the block is passed through the lead-out hole, it is guided while being accommodated inside the electric wire guide part, and is drawn out from the internal space of the housing. As a result, the electric wire storage workability and the drawing workability are both improved, and the occurrence of the electric wire biting is further suppressed.

  As described above, the invention according to claim 1 of the present application can improve the workability of storing the block provided with the electrical components and the electric wire, and can also suppress the occurrence of the biting of the electric wire. Further, the number of parts is reduced, and water, dust and the like are difficult to enter the internal space of the housing. Therefore, according to the invention according to claim 1 of the present application, it is possible to provide an electrical junction box that can improve workability, reduce the number of components, and hardly deteriorate performance and durability. it can.

  In the invention according to claim 2 of the present application, not only the workability for storing the electric wire but also the workability for drawing out the wire is improved, and the occurrence of the biting of the electric wire is further suppressed. Therefore, according to the invention according to claim 2 of the present application, it is possible to provide an electrical junction box that can further improve workability, reduce the number of components, and are less likely to have lower performance and durability. be able to.

  In the invention according to claim 3 of the present application, the block storage workability and vibration resistance are further improved. Therefore, according to the invention according to claim 3 of the present application, it is possible to provide an electrical junction box that can further improve workability, reduce the number of components, and are less likely to have lower performance and durability. be able to.

  In the invention according to claim 4 of the present application, the vibration resistance of the block is further improved. Therefore, according to the invention according to claim 4 of the present application, it is possible to provide an electrical junction box that can further improve workability, reduce the number of components, and are less likely to have lower performance and durability. be able to.

  In the invention according to claim 5 of the present application, the vibration resistance of the block is further improved. Therefore, according to the invention according to claim 5 of the present application, it is possible to provide an electrical junction box that can improve workability, reduce the number of components, and are less likely to be further deteriorated in performance and durability. Can do.

  In the invention according to claim 6, the number of parts is further reduced. Therefore, according to the invention according to claim 6 of the present application, it is possible to provide an electrical junction box that can improve workability and is further reduced in the number of components and is less likely to deteriorate in performance and durability. Can do.

  In the invention according to claim 7 of the present application, the vibration resistance of the block is further improved. Therefore, according to the invention according to claim 7 of the present application, it is possible to provide an electrical junction box that can improve workability, reduce the number of components, and are less likely to have lower performance and durability. Can do.

  In the invention according to claim 8 of the present invention, the electric wire storage workability and the drawing workability are both improved, and the occurrence of the electric wire biting is further suppressed. Therefore, according to this invention of Claim 8, workability | operativity can be improved more, reduction of the number of components is achieved, and the electrical junction box which a performance and durability cannot fall more easily is provided. can do.

1 is a perspective view showing an electrical junction box according to an embodiment of the present invention as viewed from the upper left side of the front side. It is a front view which shows the electrical-connection box shown in FIG. It is a front view which shows the housing and cover part which removed the block from the electrical junction box shown in FIG. It is a perspective view which decomposes | disassembles and shows the electrical-connection box shown in FIG. 1 in a housing, a cover part, and a block. FIG. 2 is a perspective view showing the electrical junction box shown in FIG. 1 in a cross section along the vertical direction. It is a figure which expands and shows the part enclosed with the broken line X in FIG. It is a perspective view which shows the state which decomposed | disassembled the electrical junction box shown in FIG. 1 for every component from the diagonally right upper part of the front side. It is a perspective view which shows the state which assembled the component of the electrical junction box shown in FIG. 7 from the diagonally upper right of the front side. It is a perspective view which shows the state which closed the cover part of the assembled electrical connection box shown in FIG. 7 from the diagonally upper right of the front side.

  Hereinafter, an electrical junction box according to an embodiment of the present invention will be described with reference to FIGS. First, the configuration and structure of an electrical junction box according to an embodiment will be described with reference mainly to FIGS.

[Configuration and structure of electrical junction box]
As shown in FIGS. 1 and 2, the electrical junction box 1 according to this embodiment includes a block 2, a housing 3, and a lid 4. In the present embodiment, the block 2 is configured by combining a plurality of cassette blocks 5 mounted with electrical components 5a with a main block 6, as will be described in more detail with reference to FIG. Therefore, in the following description, the block 2 is referred to as a block assembly. Although illustration is omitted, as the electrical component 5a, for example, a relay or a fuse is used. Each cassette block 5 is detachably attached to a predetermined position of the main block 6. Further, from the block assembly 2, electric wires 7 are drawn out for electrical connection between the cassette blocks 5 and the outside. In the present embodiment, among the both end faces 2a and 2b in the thickness direction of the block assembly 2, a plurality of electric wires 7 are electrically connected to the end face 2b opposite to the end face 2a on the side where the electrical component 5a is mounted. It is connected to the. In the following description, the end surface 2a on the side where the electrical component 5a of the block assembly 2 is mounted will be referred to as a component mounting surface as appropriate. Further, the end surface 2b on the side where the electric wire 7 of the block assembly 2 is led out is referred to as an electric wire outlet surface.

  As shown in FIGS. 1, 2, and 4, the housing 3 has a hollow internal space 8 in which the block assembly 2 is slid and housed together with the electric wires 7 extending from the block assembly 2. In addition, the housing 3 is provided with one opening 9 communicating with the internal space 8 so that the block assembly 2 can be taken in and out of the internal space 8. The internal space 8 and the opening 9 are formed in a size and shape that can accommodate the block assembly 2 together with the electric wires 7 in the internal space 8. The size and shape of the internal space 8 and the opening 9 are appropriately set according to the size and shape of the block assembly 2 housed in the internal space 8, the amount of the electric wires 7, and the like.

  In the present embodiment, the opening 9 is formed in a square shape whose one side is slightly larger than the length along the longitudinal direction of the block assembly 2. In addition, the length along the longitudinal direction of the block assembly 2 shall refer to the length along the left-right direction of the block assembly 2 so that it may mention later. The block assembly 2 is put in and out of the internal space 8 in a posture in which the left-right direction is kept parallel to the opening 9. The depth of the internal space 8 is set to be slightly larger than the length along the sliding direction of the block assembly 2 perpendicular to the longitudinal direction of the block assembly 2. The length along the front-rear direction of the block assembly 2, which is the sliding direction of the block assembly 2, is shorter than the length along the left-right direction of the block assembly 2. Therefore, the length of the casing 3 in the depth direction is smaller than the length of one side of the opening 9. For this reason, as shown in FIGS. 1 to 5, the housing 3 is formed in a shape in which a shallow box is erected with one peripheral wall 13 as a bottom wall. The housing 3 is a box body of the electrical junction box 1.

  Moreover, in this embodiment, the housing | casing 3 is formed of the five wall parts 10, 11, 12, 13, and 14 by which the main part was formed in substantially flat plate shape. More specifically, the housing 3 is configured by four wall portions 10, 11, 12, and 13 that surround a peripheral wall surrounding the one opening 9 from four sides. Accordingly, the opening 9 of the housing 3 is formed by the four peripheral walls 10, 11, 12, and 13 at the edge 9 a. Each of these peripheral walls 10, 11, 12, and 13 is formed in a substantially rectangular shape of a flat plate having substantially the same size. The casing 3 has its end face opposite to the opening 9 closed by a single wall 14. The wall 14 provided to face the opening 9 is formed in a substantially square plate shape. Thus, the housing | casing 3 is formed in the substantially rectangular parallelepiped box shape by which one surface was opened.

  Hereinafter, for convenience of description, the opening 9 side of the housing 3 is referred to as the front side, front side, or front side of the housing 3, and the wall portion 14 side of the housing 3 is referred to as the back side, rear side, or It will be called the back side. The right side of the housing 3 is called the left side of the housing 3 and the left side is called the right side of the housing 3. In addition, the upper side of the housing 3 facing from the front side is referred to as the upper side of the housing 3, and the lower side is referred to as the lower side of the housing 3. Therefore, in the present embodiment, the peripheral wall 10 is the right side wall of the casing 3, and the peripheral wall 12 is the left side wall of the casing 3. Further, the peripheral wall 11 becomes an upper wall of the housing 3, and the peripheral wall 13 becomes a lower wall or a bottom wall of the housing 3. The peripheral wall 14, which is the back wall facing the opening 9, becomes the back wall or the rear wall of the housing 3.

  As shown in FIGS. 1 to 5, an electric wire 7 housed in an internal space 8 of the housing 3 is placed outside the housing 3 in a mating portion 9 a between the housing 3 and a lid portion 4 described later. A lead-out hole 15 is formed. Here, the joint portion 9 a of the housing 3 and the lid portion 4 specifically refers to the edge portion 9 a of the opening 9. The lead-out hole 15 is formed at the edge of the peripheral wall facing the wire lead-out surface 2 b of the block assembly 2 housed in the internal space 8 of the housing 3. As will be described later, in the present embodiment, the block assembly 2 is housed in the internal space 8 of the housing 3 with its electric wire lead-out surface 2b facing downward. Therefore, the lead-out hole 15 is formed in the edge 13 a of the lower wall 13 among the edges of the four peripheral walls 10, 11, 12, 13 that form the edge 9 a of the opening 9. More specifically, the lead-out hole 15 is recessed in a substantially semicircular shape from the edge 9a of the opening 9 toward the back wall 14 at a position near the right wall 10 of the edge 13a of the lower wall 13. Is formed.

  Furthermore, in this embodiment, the housing side electric wire guide part 16 which comprises the lead-out hole 15 is extended from the housing | casing 3 toward the outer side, and is provided. As shown in FIGS. 1 to 5, the housing-side electric wire guide portion 16 is provided integrally with the lower wall 13 continuously from the edge portion 15 a of the lead-out hole 15 formed in the lower wall 13. The casing-side electric wire guide portion 16 is extended toward the lower side of the housing 3 along a direction substantially orthogonal to the lower wall 13. Moreover, the housing side electric wire guide part 16 is formed in the substantially semi-cylindrical shape which divided the cylinder in half along the axial direction. Further, the edge 15 a of the lead-out hole 15 is provided with a smooth curved taper that is convex toward the center of the lead-out hole 15.

  As shown in FIGS. 1 to 5, a pair of guide portions 17 and 18 for smoothly guiding and holding the block assembly 2 in the internal space 8 are provided inside the housing 3. . Each of these guide portions 17 and 18 is a pair of peripheral walls facing each other with the opening 9 interposed therebetween in a direction orthogonal to the component mounting surface 2a of the block assembly 2 among the respective peripheral walls 10, 11, 12, and 13. 10 and 12 inside. As will be described later, in the present embodiment, the block assembly 2 is slid from the lateral direction with respect to the housing 3 with the component mounting surface 2a facing upward and stored in the internal space 8. Therefore, each guide part 17 and 18 is provided inside the right side wall 10 and the left side wall 12. Each of the left and right guide portions 17 and 18 is formed in a rail shape extending in a substantially straight line along the sliding direction of the block assembly 2 from the edge portion 9 a of the opening 9 toward the back wall 14. For this reason, each guide part 17 and 18 is also called a guide rail or a guide rib.

  Specifically, each of the guide rails 17 and 18 is separated from a pair of the upper guide rails 17a and 18a and the lower guide rails 17b and 18b that are separated from each other in the direction orthogonal to the sliding direction of the block assembly 2 and face each other. Composed. The distance between the upper guide rails 17 a and 18 a and the lower guide rails 17 b and 18 b is set to an appropriate size according to the thickness of the block assembly 2.

  More specifically, the distance between the upper guide rails 17a, 18a and the lower guide rails 17b, 18b is such that the guide rails 17a, 18a, 17b, 18b and the left and right side walls 2c, 2d of the block assembly 2 are separated. The upper and lower edge portions 2e, 2f, 2g, and 2h are set to sizes that allow smooth sliding contact along the sliding direction of the block assembly 2. At the same time, the distance between the upper guide rails 17a, 18a and the lower guide rails 17b, 18b is such that the guide rails 17a, 18a, 17b, 18b are respectively located above and below the left and right side walls 2c, 2d of the block assembly 2. The edge portions 2e, 2f, 2g, and 2h are set to a size that can be supported from both outer sides in the thickness direction of the block assembly 2.

  The guide rails 17a, 18a, 17b, and 18b each have a substantially L-shaped or substantially inverted L-shaped cross section that is orthogonal to the longitudinal direction thereof. And each guide rail 17 and 18 is arrange | positioned with the attitude | position with which the front-end | tip parts which each upper side guide rail 17a and 18a and lower side guide rail 17b and 18b bent mutually face inward mutually.

  Furthermore, each guide rail 17 and 18 is provided in the intermediate part of the height direction of the right side wall 10 and the left side wall 12, respectively. The position in the height direction of each guide rail 17, 18 is the height of each electric component 5 a protruding from the component mounting surface 2 a of the block assembly 2 or the electric wire drawn from the electric wire outlet surface 2 b of the block assembly 2. 7 is set to an appropriate position in accordance with the amount of 7 or the like. Specifically, the positions of the guide rails 17 and 18 correspond to the electrical components protruding from the component mounting surface 2 a of the block assembly 2 when the block assembly 2 is stored in the internal space 8 of the housing 3. 5a is set to a height at which the upper wall 11 of the housing 3 does not interfere with each other. At the same time, the positions of the guide rails 17 and 18 are set to a height at which the electric wire 7 drawn out from the electric wire outlet surface 2b of the block assembly 2 can be smoothly accommodated in the internal space 8 of the housing 3.

  In the following description, for convenience, one main surface of the main block 6 that is the main surface on the component mounting surface 2a side of the block assembly 2 among the two main surfaces 6a, 6b in the thickness direction of the main block 6. 6a will be referred to as the upper surface of the main block 6 as appropriate. Similarly, of the main surfaces 6a and 6b in the thickness direction of the main block 6, the other main surface 6b of the main block 6 which is the main surface on the wire lead-out surface 2b side of the block assembly 2 is appropriately connected to the main block 6 6 is referred to as the lower surface.

  As shown in FIGS. 1, 2, 4, and 5, the guide rail 17, the upper and lower edges 2 e, 2 f, 2 g, 2 h of the left and right side walls 2 c, 2 d of the block assembly 2 A pair of guide receiving portions 19, 20 that slide-engage with 18 are formed. Here, the right side wall 2 c and the left side wall 2 d of the block assembly 2 are substantially the right side wall 6 c and the left side wall 6 d of the main block 6. Therefore, the guide receiving portions 19 and 20 are formed on the upper and lower edge portions 6e, 6f, 6g, and 6h of the left and right side walls 6c and 6d of the main block 6, respectively. The upper and lower edges 6e, 6f, 6g, 6h of the left and right side walls 6c, 6d of the main block 6 are the left and right edges 6e, 6f of the upper and lower main faces 6a, 6b of the main block 6, respectively. , 6g, 6h.

  Specifically, the guide receiving portions 19 and 20 are extended along the sliding direction of the block assembly 2 at the left and right side edge portions 6e, 6f, 6g, and 6h of the upper surface 6a and the lower surface 6b of the main block 6. It is a guide groove formed in this way. These guide grooves 19 and 20 are formed to be recessed from the upper and lower main surfaces 6a and 6b of the main block 6 from the back wall side end portion 6i of the main block 6 to the opening side end surface 6j. The rear wall side end 6 i of the main block 6 is also referred to as a back surface portion or a rear surface portion of the main block 6. The back wall side end 6 i of the main block 6 constitutes the back wall side end 2 i of the block assembly 2. Further, the opening-side end surface 6j of the main block 6 is also referred to as a front surface or a front surface of the main block 6. The opening side end surface 6j of the main block 6 constitutes the opening side end surface 2j of the block assembly 2.

  Each guide groove 19, 20 includes a pair of upper and lower guide grooves 19 a, 19 b, 20 a, 20 b corresponding to each guide rail 17, 18. In each guide groove 19a, 19b, 20a, 20b, guide rails 17a, 17b, 18a, 18b bent in a substantially L shape or a substantially inverted L shape slide along the sliding direction of the block assembly 2. Engage freely. More specifically, the tip of the upper rail 17 a of the right guide rail 17 is fitted inside the upper groove 19 a of the right guide groove 19. The tip of the lower rail 17 b of the right guide rail 17 is fitted inside the lower groove 19 b of the right guide groove 19. Similarly, the tip of the upper rail 18a of the left guide rail 18 is fitted inside the upper groove 20a of the left guide groove 20. The tip of the lower rail 18 b of the left guide rail 18 is fitted inside the lower groove 20 b of the left guide groove 20.

  With such a structure, the block assembly 2 is slidably supported along the sliding direction by the guide rails 17a, 17b, 18a, and 18b from both outer sides in the thickness direction. At the same time, the movement of the block assembly 2 along the thickness direction or the vertical direction perpendicular to the sliding direction is restricted by the guide rails 17a, 17b, 18a, 18b. Furthermore, the movement of the block assembly 2 along the left-right direction orthogonal to the sliding direction is restricted by the left and right peripheral walls 10, 12 of the housing 3 on which the guide rails 17a, 17b, 18a, 18b are formed. . That is, the block assembly 2 is slide-stored in the internal space 8 of the housing 3 in a state where movement in two directions orthogonal to the slide direction is restricted.

  As shown in FIGS. 3 to 6, the back wall side end 2 i of the block assembly 2 facing the back wall 14 is supported inside the back wall 14 facing the opening 9 of the housing 3. Block support portions 21 are provided at a plurality of locations. As shown in FIGS. 4, 5, and 7, each cassette block 5 is attached to the rear wall side end 6 i of the main block 6. For this reason, the rear wall side end 2 i of the block assembly 2 is substantially constituted by a plurality of cassette blocks 5. Therefore, each block support part 21 supports the rear wall side end part 2 i of the block assembly 2 indirectly by directly supporting each cassette block 5.

  Specifically, each block support portion 21 includes a pair of upper and lower ribs 21a and 21b, respectively, in the same manner as the guide rails 17 and 18 described above. In the following description, the block support portion 21 is referred to as a block support rib. Each block support rib 21 is provided at a height facing each cassette block 5 of the block assembly 2 housed in the internal space 8 of the housing 3. In the present embodiment, four pairs of the block support ribs 21 are provided at substantially equal intervals along the left-right direction of the casing 3 orthogonal to the slide direction of the block assembly 2.

  As shown in FIGS. 5 and 6, each block support rib 21 has an appropriate distance between the upper rib 21 a and the lower rib 21 b according to the size of the sandwiched portion 22 of each cassette block 5. Is set to Specifically, the distance between each upper rib 21a and each lower rib 21b is such that the sandwiched portion 22 of each cassette block 5 can be clamped from both outer sides in the thickness direction of the block assembly 2. Is set. Thereby, the holding force of the block assembly 2 accommodated in the internal space 8 of the housing 3 is improved. FIG. 6 is an enlarged view of a portion surrounded by a broken line X in FIG.

  As shown in FIGS. 1 to 5, 7, and 8, a block locking portion that locks the block assembly 2 housed in the internal space 8 of the housing 3 is provided inside the housing 3. 23 are provided in two places. These block locking portions 23 are, like the guide rails 17 and 18 described above, of the peripheral walls 10, 11, 12 and 13, the right side wall 10 facing the left and right side walls 2 c and 2 d of the block assembly 2. And one each inside the left side wall 12.

  More specifically, each block engaging portion 23 is disposed between the upper guide rails 17a and 18a and the lower guide rails 17b and 18b of the left and right guide rails 17 and 18, respectively. At the same time, each block engaging portion 23 is disposed at each opening edge 9 a of the right side wall 10 and the left side wall 12. With this structure, the block assembly 2 housed in the internal space 8 of the housing 3 is locked by the block locking portions 23 at the end surface 2j on the opening 9 side. In addition, each block latching | locking part 23 is formed with the material which has flexibility. Therefore, the block assembly 2 can be easily detached from the housing 3 by bending each block engaging portion 23 and removing it from the opening side end surface 6j of the main block 6.

  In addition, as shown in FIGS. 1 to 4, 7, and 8, a lid portion 4 to be described later is locked to the outer surfaces of the right side wall 10, the left side wall 12, and the lower side wall 13 of the housing 3. One lid locking frame 24 is provided. Each of these lid portion locking frames 24 is disposed on each opening edge 9 a of the right side wall 10, the left side wall 12, and the lower side wall 13. When the locking claws 25 provided on the lid part 4 are fitted into the lid part locking frames 24, the lid part 4 is held by the housing 3 with the opening 9 being closed. Similarly to the block locking portion 23 described above, the lid locking frame 24 and the lid locking claw 25 are also formed of a flexible material and can be attached and detached freely. Thereby, the cover part 4 can open and close the opening part 9 of the housing 3 through the hinge 27 mentioned later.

  Furthermore, as shown in FIGS. 1 to 4 and FIGS. 7 to 9, the electrical connection box 1 is attached to the outer surface of the right side wall 10, the left side wall 12, and the lower side wall 13 of the housing 3 on the mounting side (not shown). One mounting stay 26 is provided for each. For example, each mounting stay 26 is fixed to a predetermined position in an engine room of an automobile on the mounting side using bolts and nuts (not shown). Thereby, the electrical junction box 1 is fixed and mounted on the automobile. At this time, it is preferable that the electrical connection box 1 is disposed in such a posture that the opening 9 is directed in the lateral direction and the lead-out hole 15 is directed downward. Here, the horizontal direction is a substantially horizontal direction. The downward direction is a substantially vertical downward direction.

  As shown in FIG. 9 to be referred to later, the lid 4 covers the entire block assembly 2 stored in the internal space 8 of the housing 3 by closing the opening 9. The lid 4 is integrally attached to the upper side wall 11 of the housing 3 through a hinge 27 so that the opening 9 can be opened and closed. The hinge 27 is formed into a thin flat plate shape using a flexible material such as polypropylene (PP).

  Also, as shown in FIGS. 1 to 5, 7, and 8, among the front and back main surfaces of the lid portion 4, the lid portion 4 was accommodated in the internal space 8 when the lid portion 4 was closed. One block pressing portion 28 is provided on the main surface 4 a on the side facing the block assembly 2. Therefore, the main surface 4 a on which the block pressing portion 28 is provided is the inner surface of the lid portion 4. The block pressing portion 28 is formed on the inner surface 4 a of the lid portion 4 at a position facing the opening side end surface 2 j of the block assembly 2 housed in the internal space 8 of the housing 3. The block pressing portion 28 abuts against the opening side end surface 6j of the main block 6 when the lid portion 4 closes the opening 9, and presses the block assembly 2 toward the back side of the internal space 8 of the housing 3. To do. In addition, on the inner surface 4a of the lid portion 4, reinforcing ribs 29 project in a lattice shape.

  Further, as shown in FIGS. 1, 4, 5, and 7 to 9, the lid portion 4 is provided with a lid-side wire guide portion 31 that constitutes the wire guide portion 30 together with the housing-side wire guide portion 16. It has been. The lid-side wire guide portion 31 is joined to the housing-side wire guide portion 16 in a state where the lid portion 4 closes the opening 9, and forms a cylindrical wire guide portion 30 together with the housing-side wire guide portion 16. At this time, the lead-out hole 15 itself is held in an open state in which the opening communicates the internal space 8 of the housing 3 with the outside. On the other hand, the opening 16 a along the axial direction of the housing-side wire guide portion 16 is closed by the lid-side wire guide portion 31. In other words, in a state where the lid 4 closes the opening 9, the lead-out hole 15 is secured as an internal space of the cylindrical wire guide portion 30 having both axial ends opened. The electric wire 7 accommodated in the internal space 8 of the housing 3 is guided through the lead-out hole 15 inside the electric wire guide portion 30 and drawn out of the housing 3.

  1, 2, 7, and 8, the electrical component 5 a is mounted on each cassette block 5. On the other hand, in FIG.4 and FIG.5, the state in which the electrical component 5a is not mounted in each cassette block 5 is illustrated. These two types of states are merely devices for making the drawings easy to see, and do not relate to the gist of the present invention.

  Next, an example of the assembly method and attachment method of the electrical junction box 1 according to the present embodiment will be described with reference mainly to FIGS.

[Assembly method and attachment method of electrical junction box]
First, a predetermined number of electric wires 7 for electrically connecting each electric component 5 a to the outside of the electric junction box 1 are attached to the main block 6. Each electric wire 7 is attached to the main block 6 by being inserted into the main block 6 from a surface that becomes the electric wire lead-out surface 2b of the block assembly 2 among a plurality of peripheral surfaces of the main block 6. At this time, although not shown, a predetermined number of internal electric wires with terminals such as bus bars for electrically connecting the electric wires 7 and the electric components 5a through the predetermined paths in the main block 6 are combined. Install. Each terminal provided at the tip of each internal electric wire with terminal is attached to each electric component 5a and each terminal when the electric component 5a is mounted on the cassette block 5 assembled to the main block 6 in a later process. It becomes an electrical connection with the internal electric wire. Each electric wire 7 is electrically connected to an internal electric wire with a predetermined terminal inside the main block 6 and attached to the main block 6.

  Next, a predetermined number of cassette blocks 5 are attached to the main block 6 to which the electric wires 7 and the internal electric wires with terminals are attached. As shown in FIG. 7, each cassette block 5 is fitted into the rear wall side end portion 6 i of the main block 6 from above. Subsequently, a predetermined electrical component 5a such as a relay or a fuse is attached to each cassette block 5 attached to the main block 6. Each electrical component 5a is fitted and mounted on each cassette block 5 from above, for example. At this time, each electrical component 5 a is electrically connected to each terminal of each internal electric wire with a terminal provided in the main block 6 in advance. Thereby, each electric component 5a is electrically connected with each electric wire 7 by a predetermined | prescribed path | route via each internal electric wire with a terminal. The block assembly 2 formed by combining each cassette block 5 on which a plurality of electrical components 5a are mounted with the main block 6 is assembled through the above steps.

  In FIG. 7, prior to attaching each cassette block 5 to the main block 6, a state in which each electrical component 5 a is mounted on each cassette block 5 in advance is illustrated. However, this is merely a device for facilitating understanding of the mounting state of the electrical component 5a on each cassette block 5, and does not contradict the above description. For each cassette block 5 and electrical component 5a, for example, a general-purpose product such as a so-called standard component manufactured in accordance with a standard in the automobile component industry can be used.

  Next, as shown in FIG. 8, the block assembly 2 is accommodated in the internal space 8 of the housing 3. Here, the block assembly 2 is placed in the internal space 8 of the housing 3 from the lateral direction of the housing 3 through the opening 9 with the component mounting surface 2a facing upward and the wire lead-out surface 2b facing downward. Slide towards. At this time, the guide rails 17a, 17b, 18a, 18b provided inside the right side wall 10 and the left side wall 12 of the housing 3 are respectively connected to the left and right edge portions 6e of the upper and lower main surfaces 6a, 6b of the main block 6. , 6f, 6g, 6h are engaged with the guide grooves 19a, 19b, 20a, 20b. As a result, the block assembly 2 is smoothly guided toward the inner side of the internal space 8 of the housing 3 while being slidably supported along the sliding direction by the guide rails 17a, 17b, 18a, and 18b. The The block assembly 2 is pushed toward the back side of the internal space 8 until the back wall side end 2 i abuts the back wall 14 of the housing 3. Here, the horizontal direction refers to a substantially horizontal direction. The downward direction refers to a substantially vertical downward direction.

  When the back wall side end 2i of the block assembly 2 abuts the back wall 14 of the housing 3, the sandwiched portion 22 of each cassette block 5 attached to the back wall side end 6i of the main block 6 becomes the back wall. 14 is sandwiched by each block support portion 21 provided on the inner surface of 14. Thereby, the block assembly 2 is substantially held by the back wall 14. At the same time, the opening-side end surface 6j of the main block 6 is locked by the left and right block locking portions 23 provided inside the left and right side walls 10 and 12 of the housing 3. Thereby, the block assembly 2 once stored in the internal space 8 of the housing 3 is prevented from coming out of the housing 3 through the opening 9. At this stage, the block assembly 2 is moved by the guide rails 17, 18, the block support portions 21, the block locking portions 23, and the wall portions 10, 12, 14 on which they are provided. Is substantially stopped and held by the housing 3. That is, when the block assembly 2 is properly stored in the internal space 8 of the housing 3, its movement in each of the front, rear, left, right and up directions is restricted and substantially fixed to the housing 3.

  In addition to the above-described storing operation of the block assembly 2, a plurality of wires 7 led out from the wire lead-out surface 2 b of the block assembly 2 are also housed in the internal space 8 of the housing 3. Here, each electric wire 7 passes through the outlet hole 15 in a substantially natural state depending on the block assembly 2. Each electric wire 7 is smoothly passed from the internal space 8 of the housing 3 into the lead-out hole 15 along the edge portion 15a of the lead-out hole 15 formed by being tapered with a smooth curved surface. Each electric wire 7 passed through the lead-out hole 15 is drawn out of the housing 3 along the frame-side electric wire guide portion 16 formed continuously with the edge 15 a of the lead-out hole 15.

  Finally, as shown in FIG. 9, the lid 4 is closed to close the opening 9 of the housing 3. At the same time, the opening 16a along the axial direction of the housing-side electric wire guide 16 is closed with both ends of the lead-out hole 15 being opened. The block assembly 2 is accommodated in the internal space 8 of the housing 3 together with the electric wires 7 by the steps so far. At the same time, the block assembly 2 is entirely covered by the lid 4 and the housing 3. Thereafter, it is confirmed that each locking claw 25 provided on the lid 4 is properly fitted and locked on each lid locking frame 24 provided on the housing 3. At the same time, it is confirmed that each electric wire 7 is not bitten by the mating portion 9 a of the housing 3 and the lid portion 4. If the result of these confirmations is appropriate, the storing operation of the block assembly 2 is finished.

  At this stage, the block assembly 2 is pressed toward the back side of the housing 3 along the sliding direction by the block pressing portion 28 provided on the inner surface 4 a of the lid portion 4. Thereby, the block assembly 2 is pressed against the inner surface of the back wall 14 of the housing 3 with the back wall side end 2i. For this reason, the block assembly 2 is more securely fixed to the housing 3 than before the lid 4 is closed.

  Further, when the lid 4 is closed, each electric wire 7 put in the lead-out hole 15 is placed in a cylindrical electric wire guide portion 30 composed of the housing side electric wire guide portion 16 and the lid side electric wire guide portion 31. In fact, it is passed in a self-aligning manner. Thereby, each electric wire 7 is guided to the electric wire guide part 30, and is smoothly pulled out of the housing 3. The electric wire 7 drawn out of the housing 3 is connected to an external power source such as a battery (not shown), various lamps, an in-vehicle computer, or the like.

  Next, although illustration is omitted, the block assembly 2 is attached to a vehicle such as an automobile on the attachment side. First, the block assembly 2 is transported from a component manufacturer to an automobile production line in a state in which the block assembly 2 is properly assembled by the above-described process. Thereafter, each mounting stay 26 is fixed to a predetermined position in the engine room of the automobile by using bolts and nuts. Thereby, the electrical junction box 1 is mounted on the automobile. At this time, it is preferable that the housing 3 is fixed in the engine room in such a posture that the opening 9 of the housing 3 is oriented in a substantially horizontal direction and the lead-out hole 15 is oriented substantially vertically downward. Above, the assembly process and attachment process of the electrical junction box 1 which concern on this embodiment are complete | finished.

  As described above, in the electrical junction box 1 according to the present embodiment, the block assembly 2 is configured by attaching the cassette block 5 on which the electrical component 5 a is mounted to the main block 6. At the same time, a part that houses and covers the block assembly 2 is composed of a minimum of one part in which the lid 4 is integrated with the housing 3. According to such a configuration, the electrical junction box 1 is reduced in weight because the number of components constituting the electrical connection box 1 is reduced, and thus the weight is reduced. As a result, the electrical junction box 1 can be easily handled, so that the workability can be improved and the number of work steps and the work time can be reduced. As a result, the electrical junction box 1 can be manufactured at a low cost by suppressing the manufacturing cost by increasing the working efficiency.

  The electrical junction box 1 has only one part that covers the block assembly 2, and the housing 3 is provided with only one opening 9. Furthermore, the electrical junction box 1 is disposed in such a posture that the opening 9 is directed in the lateral direction and the lead-out hole 15 is directed downward. According to such a configuration, it is possible to prevent water, dust and the like from entering the internal space 8 of the housing 3 through the opening 9 and the outlet hole 15. In particular, the electrical junction box 1 has few joints between components and the upper portion of the housing 3 is closed, so that water, dust, and the like hardly enter the internal space 8 of the housing 3. At the same time, water, dust and the like that have entered the internal space 8 of the housing 3 are easily discharged to the outside of the housing 3 through the lead-out holes 15 directed downward of the housing 3. For this reason, the electrical junction box 1 can suppress a failure caused by water, dust or the like. As a result, the electrical junction box 1 is unlikely to deteriorate in performance, quality, reliability, durability, or the like.

  In addition, the electrical junction box 1 passes through the opening 9 of the housing 3 oriented in the lateral direction, so that the block assembly 2 is only slid in the lateral direction together with the electric wires drawn out from the lower surface 2b. Can be collectively stored in the internal space 8 of the housing 3. Furthermore, a lead-out hole 15 for pulling out the electric wire 7 to the outside of the housing 3 is formed in the edge portion 9 a of the opening portion 9 that is a joint portion between the housing 3 and the lid portion 4. For this reason, the electric wire 7 can be smoothly and easily inserted into the lead-out hole 15 only by a sliding operation in conjunction with the storing operation of the block assembly 2 and the electric wire 7.

  According to such a configuration, the electric wires 7 extending from the block assembly 2 can be smoothly and easily accommodated together with the block assembly 2 in the internal space 8 of the housing 3. Then, by closing the opening 9 with the lid 4, the block assembly 2 and the electric wires 7 housed in the internal space 8 of the housing 3 can be covered entirely with the lid 4 and the housing 3. Therefore, the electrical junction box 1 can improve the storage property of the block assembly 2 and the electric wire 7 and can also suppress the occurrence of the biting of the electric wire 7. That is, the work of fitting the lower cover to the frame or block, which has been a problem in the electrical junction box having the conventional frame structure, becomes unnecessary. At the same time, the problem of the electric wire biting that frequently occurs during the fitting operation is less likely to occur. Furthermore, it is not necessary to hold down the electric wire in order to prevent the electric wire from being caught. As a result, the electrical junction box 1 has improved workability.

  In the electrical junction box 1, the left and right guide rails 17 and 18 are fitted in the left and right guide grooves 19 and 20 of the block assembly 2 to be in sliding contact with each other, and the block assembly is moved by a horizontal sliding operation. 2 is pushed toward the internal space 8 of the housing 3. Thereby, the block assembly 2 is smoothly accommodated in the internal space 8 of the housing 3 using the left and right guide rails 17 and 18. At this time, the block assembly 2 is moved in two directions orthogonal to the sliding direction by a pair of left and right side walls 10 and 12 and a pair of upper and lower guide rails 17 and 18 provided inside the side walls 10 and 12, respectively. Is housed in the internal space 8 of the housing 3. Specifically, the block assembly 2 is housed in the internal space 8 of the housing 3 while minimizing movement in the two directions of up and down and left and right and rattling. That is, in the present embodiment, the block assembly 2 is stored and held in the internal space 8 of the housing 3 smoothly and in an appropriate posture and orientation like a desk drawer (not shown). The block assembly 2 housed in the internal space 8 constitutes a kind of shelf structure.

  With such a structure, the electrical junction box 1 is improved in the storage property and vibration resistance of the block assembly 2. For this reason, the electrical junction box 1 can further improve workability, and the performance, quality, reliability, durability, and the like are not easily lowered. Moreover, the internal structure of the housing 3 can be simplified by adopting the rail structure described above.

  Further, in the electrical junction box 1, the block assembly 2 housed in the internal space 8 of the housing 3 is provided with the sandwiched portions 22 of the cassette blocks 5 constituting the back wall side end portion 2i. Are sandwiched by a plurality of block support ribs 21 provided on the inner wall 14 of the inner wall. Thereby, the block assembly 2 is further restricted from moving in directions other than the sliding direction. Further, the block assembly 2 housed in the internal space 8 of the housing 3 is locked by the block locking portions 23 provided on the left and right side walls 10 and 12 on the opening side end surface 6j of the main block 6. The At the same time, the block assembly 2 housed in the internal space 8 of the housing 3 is moved backward by the block pressing portion 28 provided on the inner surface 4a of the lid portion 4 when the lid portion 4 is closed. It is pressed toward the side. As a result, the block assembly 2 is further restricted from moving in the sliding direction.

  With such a structure, the electrical junction box 1 has improved vibration resistance of the block assembly 2. For this reason, as for the electrical junction box 1, performance, quality, reliability, durability, etc. are hard to fall. Further, the block assembly 2 housed in the internal space 8 of the housing 3 is locked to the housing 3 in advance by a pair of block locking portions 23 prior to closing the lid portion 4. Thereby, even when an external force is applied to the electric wire 7 to pull the block assembly 2 to the outside of the housing 3 with the opening 9 opened, there is almost no possibility that the block assembly 2 jumps out of the housing 3. Therefore, there is almost no need to perform a burdensome operation of closing the lid 4 while pushing the block assembly 2 toward the back side of the housing 3. As a result, the workability in the entire assembly operation of the electrical junction box 1 including the storage operation of the block assembly 2 is improved.

  Further, in the electrical junction box 1, the block assembly 2 is slid through the opening 9 from the lateral direction of the housing 3 with the wire lead-out surface 2 b facing downward and is housed in the internal space 8 of the housing 3. The The electric wires 7 housed in the internal space 8 of the housing 3 together with the block assembly 2 are passed through the outlet hole 15 in a natural state depending on the block assembly 2. At this time, the electric wire 7 substantially does not bypass the obstacle from the electric wire outlet surface 2b of the block assembly 2 to the outlet hole 15 formed in the lower side wall 13 facing the electric wire outlet surface 2b. Is extended through the shortest path. Further, when the lid 4 closes the opening 9 of the housing 3, the lid-side electric wire guide 31 provided on the lid 4 is joined to the housing-side electric wire guide 16 provided on the housing 3. The electric wire guide part 30 having a shape is formed. The electric wire 7 is passed from the internal space 8 of the housing 3 into the lead-out hole 15, and then guided while being accommodated inside the electric wire guide portion 30, and drawn out from the internal space 8 toward the outside of the housing 3.

  According to such a structure, the electrical connection box 1 can further improve the workability because the storage property of the electric wire 7 is further improved and the occurrence of the biting of the electric wire 7 is further suppressed. . At the same time, the electrical junction box 1 is unlikely to deteriorate in performance, quality, reliability or durability.

  As described above, the electrical junction box 1 according to the present embodiment does not employ a conventional frame structure, but has a frameless box structure. For this reason, it is hard to produce the problem of bad storage of an electric wire, generation | occurrence | production of the biting of an electric wire, and the deterioration of workability resulting from these. In addition, problems such as an increase in work man-hours and work time due to a large number of parts, as well as an increase in manufacturing cost and an increase in weight hardly occur. Furthermore, problems such as deterioration in performance, quality, reliability, durability, and the like due to the biting of the wires and the entry of water or dust into the internal space 8 of the housing 3 are unlikely to occur. Therefore, according to the electrical junction box 1 which concerns on this embodiment, the various problems in those prior art can be solved collectively. That is, according to the electrical junction box 1 according to the present embodiment, the workability can be improved, the weight can be reduced, and the performance and durability can be hardly lowered.

  The electrical junction box 1 according to the present invention is not limited to the embodiment described above. As long as it does not deviate from the gist of the present invention, the configuration, shape, setting, and the like may be variously changed or combined.

  For example, the posture of the block assembly 2 when the block assembly 2 is housed in the internal space 8 of the housing 3 is not limited to the posture described above. For example, the block assembly 2 is turned over 90 degrees so that the component mounting surface 2 a faces the left side wall 12 of the housing 3. At the same time, the wire lead-out surface 2 b is opposed to the right side wall 10 of the housing 3. The block assembly 2 may be stored in the internal space 8 of the housing 3 in such a posture. By forming the positions of the guide rails 17 and 18 and the block support ribs 21 at appropriate positions in accordance with the posture of the block assembly 2, the same effects as those of the above-described embodiment can be obtained.

  The guide portions 17 and 18 that guide and support the block assembly 2 along the sliding direction are not limited to the above-described pair of upper and lower guide rails 17a, 17b, 18a, and 18b. For example, each guide portion 17, 18 is a single piece that is linearly extended from the opening 9 toward the back wall 14 along the sliding direction of the block assembly 2 inside the left and right side walls 10, 12. You may form as a protrusion. And the groove | channel of the right and left side walls 6c and 6d of the main block 6 is made into each guide receiving part 19 and 20 as one groove | channel which such one protrusion inserts and slide-engages freely. One may be formed on each of the surfaces facing the left and right side walls 10, 12.

  Further, the number of the block locking portions 23 is not limited to the two described above. The number of block locking portions 23 may be one or three or more as long as the opening side end surface 6j of the main block 6 can be properly locked. At the same time, the position at which the block engaging portion 23 is provided is not limited to the inside of the left and right side walls 10 and 12 of the housing 3 described above. The position where the block locking portion 23 is provided is a position where the opening side end surface 6j of the main block 6 can be locked properly according to the posture of the block assembly 2 housed in the internal space 8 of the housing 3. It may be changed and set as appropriate.

  Further, the position where the lead-out hole 15 and the housing-side electric wire guide portion 16 are provided is not limited to the position described above. The lead-out hole 15 and the housing-side wire guide portion 16 may be formed on the right side wall 10 or the left side wall 12, for example. By forming the lid-side wire guide portion 31 at an appropriate position in accordance with the positions of the lead-out hole 15 and the housing-side wire guide portion 16, the same effects as those of the above-described embodiment can be obtained.

  Further, the lead-out hole 15 may be formed in the lid portion 4 instead of the housing 3. By forming the lid-side wire guide portion 31 and the housing-side wire guide portion 16 at appropriate positions according to the lead-out holes 15 formed in the lid portion 4, the same effects as those of the above-described embodiment can be obtained. .

  Furthermore, the direction of the opening 9 is not limited to the horizontal direction described above. Similarly, the direction of the outlet hole 15 is not limited to the vertically downward direction described above. By setting the direction and posture in which the block assembly 2 is slid to an appropriate state in accordance with the direction of the opening 9 and the lead-out hole 15, the same effect as that of the above-described embodiment can be obtained.

  In the electrical junction box according to the present invention, the block provided with the electrical components is slid toward the internal space of the housing through the one opening that communicates with the internal space of the housing, and from the block. Store together with the extending wire. Then, by closing the opening with the lid, the block and the electric wire housed in the internal space of the housing are entirely covered with the lid and the housing. Thereby, the storage property of the block and the electric wire is improved, and the occurrence of biting of the electric wire is also suppressed. Further, the number of parts is reduced because the parts that house and cover the block are composed of two points, the housing and the lid. At the same time, since only one opening is provided in the housing, water, dust, and the like hardly enter the internal space of the housing. Therefore, it can be used to improve the assembly workability of the electrical junction box, reduce the number of parts, or suppress the decrease in performance and durability.

1 Electrical junction box 2 Block assembly (block)
2a Component mounting surface of block assembly (top surface of block)
2b Wire lead-out surface of block assembly (bottom surface of block)
2c Right side wall 2d of the block assembly 2d Left side wall 2e of the block assembly Upper side edge of the right side wall of the block assembly (an edge on the component mounting surface side of the right side wall of the block)
2f Lower edge of the right side wall of the block assembly (edge of the right side wall of the block on the side of the electric wire outlet surface)
2g The upper edge of the left side wall of the block assembly (the edge on the component mounting surface side of the left side wall of the block)
2h Lower edge of the left side wall of the block assembly (the edge of the left side wall of the block on the wire lead-out surface side)
2i The back wall side end of the block assembly (back or rear surface of the block)
2j Opening side end face of block assembly (front or front face of block)
3 Box (box body)
4 Lid 4a Surface of the lid facing the block housed in the internal space of the casing 5 Cassette block 5a Electrical component 6 Main block 6a Upper surface of the main block (one main surface of the block)
6b The lower surface of the main block (the other main surface of the block)
6c Right side wall of main block 6d Left side wall of main block 6e Right side edge of upper side of main block (upper side edge of right side wall of block)
6f Right side edge of the bottom side of the main block (lower side edge of the right side wall of the block)
6g Left side edge of top side of main block (upper side edge of left side wall of block)
6h Left side edge of lower side of main block (lower edge of left side wall of block)
6i The back wall side end of the main block (the back or back of the block)
6j Open side end face of main block (front or front of block)
7 Electric wire 8 Internal space 9 of housing 9 Opening 9a of housing Edge of opening (joining part of housing and lid)
10 Right side wall (surrounding wall)
11 Upper wall (surrounding wall)
12 Left side wall (surrounding wall)
13 Lower wall of the enclosure (bottom wall, peripheral wall)
13a Edge of the lower wall of the chassis 14 Rear wall of the chassis (back wall)
15 Lead-out hole 15a Edge 16 of lead-out hole Housing side wire guide portion 16a Opening 17 along the axial direction of the housing side wire guide portion Right guide rail (right guide portion)
17a Upper rail of right guide rail 17b Lower rail of right guide rail 18 Left guide rail (left guide portion)
18a Upper rail of the left guide rail 18b Lower rail of the left guide rail 19 Right guide groove (right guide receiving portion)
19a Upper guide groove 19b Right guide groove Lower groove 20 Right guide groove Left guide groove (right guide receiving portion)
20a Upper groove 20b of left guide groove Lower groove 21 of left guide groove 21 Block support rib (block support part)
21a Upper rib 21b of the block support rib Lower rib 22 of the block support rib 22 Clamping portion 23 Block locking portion 24 Lid locking frame 25 Lid locking claw 26 Mounting stay 27 Hinge 28 Block presser 29 Reinforcing rib 30 Electric wire guide part 31 Cover side electric wire guide part

Claims (8)

A block provided with electrical components;
Consists of a peripheral wall and a back wall, and has a hollow internal space for housing the block together with the electric wires led out from the block, and has one opening for inserting and removing the block in the internal space facing the back wall. A housing having
A lid that closes the opening and covers the block in the internal space;
The block is slid from the opening and accommodated in the internal space in a posture in which a component mounting surface of the block provided with the electrical component is opposed to one of the peripheral walls. Electrical junction box.   The electrical connection box according to claim 1, wherein a lead-out hole for drawing out the electric wire in the internal space to the outside of the housing is formed in a joint portion between the casing and the lid portion.   A pair of guide portions are provided from the openings inside a pair of opposed peripheral walls on the side orthogonal to the component mounting surface of the peripheral walls, and a pair of guide receiving portions that engage with the guide portions are 3. The block according to claim 1, wherein the block is formed on both side walls of the block facing a pair of peripheral walls, and the guide receiving portions are slidably engaged with the guide portions to support the block. Electrical junction box.   The electrical connection box according to claim 3, wherein a block support portion is provided inside the back wall to support a back wall side end portion of the block facing the back wall.   A block locking portion that locks an end surface on the opening side of the block in the internal space of the housing is provided inside any one of the peripheral walls. Item 5. The electrical junction box according to any one of Items 1 to 4.   The electrical connection box according to claim 1, wherein the lid is integrally attached to the housing through a hinge so that the opening can be opened and closed.   The block pressing part which presses the said block toward the said back wall is provided in the inner surface of the said cover part so as to oppose the said block in the said interior space. The electrical junction box according to any one of the above.   The guide hole is formed in the peripheral wall of the peripheral wall facing the end face of the block on the electric wire outlet side in the inner space, and a housing-side electric wire guide portion forming the lead hole is extended from the peripheral wall, and the lid The lid side electric wire guide part which joins to the said housing side electric wire guide part and comprises a cylindrical electric wire guide part when a part closes the said opening part is provided in the said cover part, The said lid part is provided. The electrical junction box according to any one of 7.

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