JP2002335619A - Electrical component fitting structure for electrical connection box - Google Patents

Abstract

PROBLEM TO BE SOLVED: To precisely and smoothly insert and fit an electrical component. SOLUTION: A relay 11 has four relay terminals projecting from the underside of a body portion 12, and coupling terminals 25 are housed in a relay-fitting portion 20 correspondingly. A hood 30 is attached to the upper surface of the fitting portion 20. This hood 30 is constituted of four corner portions 31 resembling four corner parts left by removing from a square pipe into which the lower end side of the body portion 12 is made fittable nearly tightly. Each corner portion 31 is formed, so that both side brims are skirt-like in shape. When viewed from the rear, v-shaped cut-off parts 32 are formed in the four peripheral walls of the hood 30. the relay 11 is inserted straight and fitted being guided by the hood 30, and corresponding both terminals 13, 25 are connected regularly, Especially, since the hood 30 is opened to an inserting operation side, the relay 11 is fitted into it, an engaging portion can be viewed clearly, and their engagement can also be started smoothly.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for mounting an electric component such as a relay on a mounting portion of an electric connection box.

[0002]

2. Description of the Related Art FIG. 7 shows an example of a structure for mounting a relay on a relay mounting portion provided in an electric junction box. That is, the relay 1 has a male tab-shaped relay terminal 3 protruding from the lower surface of a main body 2 having a short prismatic shape, and a similarly block-shaped relay mounting portion 4 protruding from the upper surface of the electric connection box. And a female mating terminal 6 fixed to the end of the electric wire in a cavity 5 formed therein.
Are housed, and are mounted by inserting the relay terminal 3 in accordance with the mating terminal 6. Here, for example, when the relay 1 is inserted obliquely, as shown in FIG. 8, the relay terminal 3 abuts against the elastic contact piece 7 of the mating terminal 6 and deforms it. There was a risk of falling out of the cavity 5.

Therefore, as a countermeasure, Japanese Patent Laid-Open No. 7-143
Japanese Patent Publication No. 645 discloses a relay provided with a skirt externally fitted to a relay mounting portion on a lower surface side of a main body of the relay. According to this, the fitting of the skirt and the relay mounting portion serves as a guide, and the relay is inserted straight, so that the relay terminal can be accurately inserted without hitting the elastic contact piece of the mating terminal obliquely. .

[0004]

Although the prior art is certainly useful for straight guiding, the skirt covers the upper surface of the relay mounting portion when the relay is inserted and operated. There is a problem that the fitting portion cannot be clearly seen, and there is a problem that it takes much time to start the fitting, and further improvement has been desired. The present invention has been completed on the basis of the above circumstances, and an object of the present invention is to make it possible to insert and mount an electric component more accurately and smoothly.

[0005]

As a means for achieving the above object, an electric component mounting structure for an electric junction box according to the first aspect of the present invention includes an electric component having terminals such as a relay.
In a device having a mating terminal connected to this terminal and being inserted and mounted in a mounting portion provided on an electric connection box, the mounting portion is provided with a hood that fits around the electric component. There is a characteristic in that the configuration is as follows. According to a second aspect of the present invention, in the first aspect, a part of a peripheral wall of the hood is cut away. According to a third aspect of the present invention, in the device according to the first or second aspect, when the plurality of mounting portions are provided side by side, adjacent peripheral walls in each hood of adjacent mounting portions are also used. It is characterized by where it is.

According to a fourth aspect of the present invention, in the device according to any one of the first to third aspects, the height of the hood is such that the electric component and the terminal of the mounting portion come into contact with each other before the terminals of the mounting portion come into contact with each other. The feature is that it is set to be fittable. A fifth aspect of the present invention is characterized in that, in any one of the first to fourth aspects, a tapered surface is formed at an inner corner of the protruding end of the hood. According to a sixth aspect of the present invention, in the one of the first to fifth aspects, the hood is formed by four corner portions leaving four corner portions of the rectangular cylinder, and The feature is that each corner portion is formed so as to expand at the bottom.

[0007]

<Operation and effect of the invention><Invention of claim 1> When the electric component is fitted into the protruding end of the hood provided on the mounting portion and then pushed in, the electric component is inserted straight and guided by the hood and mounted. This prevents the electric component and the terminal of the mounting portion from being inclined and hitting each other. In particular, since the hood is open to the near side in the operation direction and the electric component is fitted therein, the fitting portion can be clearly seen, and the fitting can be started smoothly. <Invention of Claim 2> When the electric component is likely to generate heat, the cutout portion of the peripheral wall of the hood can function as a heat release. <Invention of claim 3> Adjacent mounting portions can be packed and arranged, which can contribute to space saving.

<Invention of Claim 4> Before the electric component and the terminal of the mounting portion start contacting each other, the hood and the electric component are fitted together. Thereafter, the electric component is inserted straight while being guided by the hood. , Both terminals are gradually connected. It is more reliable that both terminals are connected in the normal posture. <Invention of claim 5> By being guided by the tapered surface,
Start of fitting is performed more smoothly. <Invention of Claim 6> Since only a minimum necessary corner portion is left to guide the fitting, it is possible to contribute to weight reduction, and since the corner portion itself has a wider hem, the necessary strength is reduced. Secured.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIG.
This will be described with reference to FIG. This embodiment illustrates a case where the present invention is applied to a relay block 10 (hereinafter, referred to as R / B). First, the overall structure is explained.
The R / B 10 is formed of a synthetic resin material into a horizontally long plane shape as shown in FIG. On the surface of the R / B 10, a relay mounting portion 20 (20) for mounting a relay mainly extends from the center column in the vertical direction in FIG.
A, and a fuse mounting part 40 (miniature fuse 40A, miniature fuse 40A, miniature fuse 40A) for mounting various types of fuses (mini fuse, fusible link, mini fusible link) on other portions. A fusible link 40C) is provided. Terminal fittings (partially busbars or relay terminals) fixed to the ends of the electric wires are inserted and accommodated in the respective mounting portions 20 and 40 from the rear side, and the relays or the relays mounted on the mounting portions 20 and 40 are accommodated. It is designed to be connected to the terminal of the fuse. A cover (not shown) is attached to the surface of the R / B 10.

Next, the mounting structure of the relay will be described in detail with reference to FIGS. 2 and 3, taking the relay mounting portion 20 located substantially at the center of the surface of the R / B 10 as an example. The relay 11 mounted on the relay mounting portion 20 has a short rectangular prism-shaped main body 12 made of synthetic resin, and from its lower surface, a total of four relay terminals of a pair of a coil side and a contact side. 13 are protrudingly provided. The relay terminals 13 are in the form of male tabs, and are arranged in such a manner that the directions of the plate surfaces are aligned and positioned at each corner of the square, and the relay terminals 13 corresponding to obliquely form a pair. I have.

One of the relay mounting portions 20 has substantially the same outer shape as the main body portion 12 of the relay 11, and has four vertically oriented cavities 21 for accommodating the mating terminals 25 therein. It is formed corresponding to the arrangement of the relay terminals 13. The mating terminal 25 is composed of a female terminal fitting provided with a pair of contact pieces 26 that elastically sandwich and contact the relay terminal 13. Each mating terminal 25 is fixed to the end of an electric wire (not shown) by caulking the barrel 27 at the rear end, and is inserted into the corresponding cavity 21 from the back side, and is provided on the wall surface of the cavity 21. The lance 22 (see FIG. 1) is adapted to be retained and housed.

A hood 30 is provided on the upper surface of the relay mounting section 20. This hood 30 is a relay 1
The lower end side of the one main body 12 is formed by four corners 31 such that four corners of a rectangular tube which can be fitted almost tightly are left. Each corner portion 31 is formed so that both side edges thereof are formed to spread toward the bottom. When viewed from the opposite side, the V-shaped cutout portion gradually narrows downward on the four peripheral walls of the hood 30. 32 are formed.

The protruding height of each corner 31 is determined by the relay 11
The lower end of the main body 12 of the relay 11 is located inside the protruding end of the corner portion 31 before the relay terminal 13 protruding downward from the contact and the mating terminal 25 accommodated in the relay mounting portion 20 come into contact with each other. The height is set so that it can be fitted.
Further, a tapered surface 34 for guiding is formed at a protruding end of each corner portion 31 at an inner corner thereof.

The mounting operation of the relay 11 is as follows. First, the relay 11 is oriented in a predetermined direction, and the upper end side of the main body 12 is gripped with a finger, and is inserted toward the corresponding relay mounting section 20 as shown by the arrow in FIG. First, the lower end of the main body 12 of the relay 11 is fitted inside the protruding end of the hood 30 formed of the corner portion 31, and the hood 30 is opened upward, which is near the insertion direction of the relay 11. As a result, the fitting portion can be visually observed well, and the fitting can be easily performed. Further, since the tapered surface 34 is formed at the inner corner of the protruding end of the corner portion 31, even if the core is slightly misaligned at the time of insertion, it is aligned by the tapered surface 34 and fitted smoothly.

Further, even when the shaft core is fitted with an inclination,
Before the relay terminal 13 is connected to the mating terminal 25, the lower end of the main body 12 of the relay 11 is connected to the hood 30 as described above.
As shown in FIG. 4, the relay 11 is corrected to a substantially straight posture as it fits inside the protruding end of the relay 11. And
Subsequently, when the relay 11 is inserted, the relay 11 takes a straight posture while being guided by the hood 30, and FIGS.
As shown in (1), the relay terminal 13 is inserted straight between the elastic contact pieces 26 of the mating terminal 25 and connected.

As described above, even if the relay 11 is inclined and inserted, the lower end of the main body 12 is fitted inside the protruding end of the hood 30 before the relay terminal 13 and the mating terminal 25 start contacting. After that, the relay 11 is inserted straight while being guided by the hood 30, and the two terminals 13,
25 are connected in the normal posture. As a result, relay terminal 1
It is possible to prevent the third member 3 from obliquely abutting against the elastic contact piece 26 of the partner terminal 25 and deforming the same, or to remove the partner terminal 25 from the cavity 21 backward. In particular, since the hood 30 opens upward, which is closer to the operating direction, and the relay 11 is fitted therein, the fitting portion can be clearly seen, and the fitting can be started smoothly.

When the four relay terminals 13 are protruded in a posture in which the plate surfaces are aligned as in the relay 11 exemplified here, the four relay terminals 13 are inserted into the relay mounting portion 20 to be connected to the mating terminal 2.
After contact with the relay 5, the relay 11 may shift in a direction parallel to the plate surface of the relay terminal 13 due to vibration or the like.
In this respect, in this embodiment, since the lower half of the main body 12 of the relay 11 is fitted in the hood 30 after the mounting, the above-described displacement of the relay 11 is prevented. The reliability of contact between the terminal 13 and the mating terminal 25 is enhanced.

Since cutouts 32 are opened in the four peripheral walls of the hood 30, the cutouts 32 can function effectively as heat dissipation from the relay 11. Conversely, the hood 30 is composed of only the four corner portions 31 in order to obtain the cut portion 32, but only the four corner portions 31 function sufficiently to correct the posture of the relay 11. It can contribute to weight reduction. In addition, since the corner portion 31 itself has an angle shape and a flared portion, necessary strength is sufficiently secured.

At a portion indicated by reference numeral 20A, two relay mounting portions are provided side by side.
Here, the adjacent peripheral walls of the hoods 30, that is, the adjacent side walls of the corner portion 31 are also formed. This makes it possible to arrange the relay mounting portions adjacent to each other tightly, which can contribute to space saving.

Further, the present invention is effective also in a mounting portion of a mini-fusible link. For example, if the mini-fusible link has a prismatic body and has two female terminals buried at the lower end thereof, for example, the mini-fusible link provided side by side at the lower right position in FIG. Mounting part 40
C has a structure in which a fitting concave portion 42 is provided on the upper surface thereof so that the lower end side of the main body portion of the mini-fusible link is fitted therein, and the male mating terminal is accommodated in a state in which the tab projects into the fitting concave portion 42. Is adopted.

Here, around the edge of the fitting recess 42,
A hood 43 is formed to be fitted almost tightly to the main body of the mini-fusible link. However, each hood 43
The cutout portion 44 is provided on a peripheral wall perpendicular to the direction in which the mini-fusible link mounting portions 40C are arranged, and adjacent peripheral walls are shared. Even in such a mini fusible link mounting portion 40C, before the terminal on the mini fusible link side and the mating terminal start to contact, the lower end of the main body portion fits inside the protruding end of the hood 43, and then the mini fusible link is attached. The fusible link is inserted straight while being guided by the hood 43, so that both terminals can be connected in a normal posture. In addition, you may make it provide the hood 46 which provided the peripheral wall of four sides continuously like the fusible link mounting part shown by the code | symbol 40B.

<Other Embodiments> The present invention is not limited to the embodiments described above and illustrated in the drawings. For example, the following embodiments are also included in the technical scope of the present invention. In addition, various changes can be made without departing from the scope of the invention. (1) The present invention can be similarly applied to a relay mounting portion and a fuse mounting portion provided in a junction box (J / B).

[Brief description of the drawings]

FIG. 1 is a plan view of an R / B according to an embodiment of the present invention.

FIG. 2 is an exploded perspective view of a mounting portion of the relay.

FIG. 3 is a cross-sectional view before mounting a relay.

FIG. 4 is a sectional view showing an initial state of mounting the relay.

FIG. 5 is a perspective view at the time of completion of mounting the relay.

FIG. 6 is a sectional view thereof.

FIG. 7 is an exploded perspective view of a conventional example.

FIG. 8 is a sectional view thereof.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... R / B 11 ... Relay (electric part) 12 ... Main part 13 ... Relay terminal 20, 20A ... Relay mounting part (mounting part) 25 ... Material terminal 30 ... Hood 31 ... Corner part 32 ... Removal part 34 ... Taper surface 40C: Mini fusible link mounting section (mounting section) 43: Hood 44: Cutting section 40B: Fusible link mounting section (mounting section) 46: Hood

Claims (6)

[Claims] 1. An electric component having a terminal such as a relay, which has a mating terminal connected to the terminal and is inserted and mounted in a mounting portion provided on an electric connection box. A hood that fits around the outer periphery of the electric component is provided. 2. The electric component mounting structure for an electric junction box according to claim 1, wherein a part of a peripheral wall of the hood is cut off. 3. The method according to claim 1, wherein when a plurality of the mounting portions are provided side by side, adjacent peripheral walls in each hood of the adjacent mounting portions are also used. Electrical component mounting structure of electrical junction box. 4. The height of the hood is set so that it can be fitted to the electric component before the terminal of the electric component contacts the terminal of the mounting portion.
The electrical component mounting structure of the electrical junction box according to any one of the above. 5. The electrical component mounting structure for an electrical junction box according to claim 1, wherein a tapered surface is formed at an inner corner of the projecting end of the hood. 6. The hood is formed by four corner portions leaving four corner portions of a rectangular tube,
The electric component mounting structure for an electric junction box according to any one of claims 1 to 5, wherein each corner portion is formed so as to expand in a skirt.