JP2599832Y2 - Mounting structure of relay block to junction block - Google Patents

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 a relay block to a junction block used in a wire harness for an automobile, and particularly to mounting the relay block on the back side of a junction block installed on an instrument panel. It is preferably used in such cases.

[0002]

2. Description of the Related Art Conventionally, an indoor junction block (hereinafter abbreviated as J / B) is installed on a cowl side in a vehicle, and a relay block (hereinafter abbreviated as R / B) is provided beside the J / B. Connected and attached. Thus, when the J / B is installed on the cowl side and the R / B is mounted beside the J / B, the mounting operation is easy and there is no problem in terms of workability.

However, recently, from the viewpoint of increasing the rigidity of the vehicle, installing a J / B on the cowl side is not preferable in terms of space, so that it is often installed on an instrument panel. Even when the J / B is installed on the instrument panel, there is a space limitation, so the relay cannot be arranged inside the J / B.
R / B is attached to the back side of B.

As described above, when the J / B is installed on the instrument panel and the R / B is attached to the back side of the J / B, as shown in FIG. 2 is provided with a lock portion, and R / B
3 is locked and fixed.

[0005]

However, in the above-described R / B mounting structure for the conventional J / B, the J / B
The R / B mounting direction is the direction in which the operability is poor, and there are many wire harnesses connected to the J / B, and the R / B lock section is bent. Therefore, the mounting and removing operations of the R / B have become extremely difficult. Further, since the rigidity of the lock portion on the lower case side of the J / B is weak, there is a possibility that the lock portion may be broken at the time of mounting the R / B.

The present invention solves the above-described problem of the conventional workability of mounting the R / B, smoothly locks and releases the lock portion between the J / B and the R / B, and breaks the lock portion. It is an object of the present invention to provide an R / B mounting structure that does not occur and has a function of guiding a wire harness connected to the J / B.

[0007]

That is, according to the present invention, a relay block is formed in a substantially U-shape frame, a fixing portion to a junction block is formed at a tip of a leg protruding on both sides, and a space between the leg is provided. A connection box is provided with a relay box on the opposite side from the leg protrusion side, and the fixing part at the tip of the leg is detachably locked and attached to the fixing part formed on the back side of the junction block, and the back side of the junction block To a junction block characterized by forming a frame portion having a rectangular space between the relay block and the approximately U-shaped frame-shaped relay block, and inserting a wire harness connected to the junction block into the space to serve as a guide portion. Is provided.

[0008] The junction block provided on the relay block has a dovetail-shaped guide in which a convex fixing portion is formed at the tip end over the entire length of both legs, and the fixing portion is provided on the J / B. While inserting and locking in the groove,
A bent portion is provided on the insertion end side of the fixed portion, and the bent portion is bent to pass through a locking portion provided on the junction block, and then is opened outward and locked by the locking portion.

[0009]

The R / B has a substantially U-shaped frame shape as described above, and a fixing portion to the J / B is provided at the tip of the leg protruding from both sides.
The fixing portion was formed into a convex shape and slidably engaged with a dovetail-shaped J / B fixing portion, and a bent portion was provided at the tip of the fixed portion. Since it is configured to be automatically opened and locked to the locking portion after passing through the locking portion, the R / B can be easily and easily fixed to the J / B.

[0010] Further, by attaching the R / B to the J / B, a guide space for inserting the wire harness connected to the J / B is formed on the back side of the J / B, so that the wire harness is protected. Can be done.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to embodiments shown in the drawings. In the drawings, FIG. 1 shows a state in which R / B11 is attached to J / B10, and FIG. 2 shows R / B11 of J / B10.
3 and 4 show a fixing portion on the lower case 12 side, and FIGS. 5 to 7 show R / B.

On the back side of the lower case 12 of the J / B 10, R / B fixing portions 13 and 14 are provided at both ends of the J / B mounting area (one end and the center in the length direction of the lower case 12).
It is formed over the entire width W1 of ten. These R
An R / B fixing portion, which will be described later, is inserted into the / B fixing portions 13 and 14 from the direction of the arrow X.

An R formed at the center of the back surface of the lower case 12
In the / B fixing portion 13, the guide portions 20 and 21 are formed at required intervals along the insertion direction X, and the insertion end side P
1 is formed with a locking portion 22. The guide portion 20 extends to the other end P2 in the width direction opposite to the insertion end side, and the guide portion 2 is provided between the guide portion 20 and the locking portion 22.
1 are formed.

As shown in FIGS. 3 and 4, the guide portions 20, 21 have ribs 26, 27 protruding in a direction closer to each other than the tips of both side protruding portions of the concave protruding portions 25, 25. , A dovetail-shaped groove 28 is formed. In addition, on the insertion side of the guide portions 20 and 21, an inclined portion 29 expanding toward the insertion end side is provided with ribs 26 and 27 and a protruding portion 25.
The fixed portions on the R / B side can be easily inserted into the guide portions 20 and 21.

The guide portion 21 formed in the middle portion of the lower case 12 penetrates the groove 28, while a closing portion 30 is provided on the end P2 side of the guide portion 20 formed on the insertion end side. I have.

A locking portion 22 provided on the insertion end P1 side
Is provided with a predetermined gap 31 from the guide portion 21 and comprises a pair of locking pieces 32 and 33 protruding with a width substantially equal to the width d1 of the groove 28. Piece 3
2, 33 are provided with tapered portions 32a, 33a which are inclined so as to spread toward the end face side.

On the other hand, the R / B fixing portion 14 formed at one end in the length direction of the lower case 12 has a case portion 35 protruding to the back side at one end in a direction orthogonal to the insertion direction. The pair of ribs formed by the fixing portion 13 are formed only on one side. That is, an L-shaped protrusion 25 'is provided so as to form a dovetail groove 28' with the side wall of the case portion 35, and a rib 26 'is provided at the protrusion end.
The other configuration is the same as that of the R / B fixing unit 13, so that the same reference numerals are given and the description is omitted.

As shown in FIGS. 5 to 7, the R / B 11 has a substantially U-shaped frame, and has leg portions 40 and 41 on both sides. Has a relay box 51 on the opposite side. The leg 40,
Fixing portions 42 and 43 are formed at the tip of 41, respectively, and these fixing portions 42 and 43 are inserted into the R / B fixing portions 13 and 14 in the insertion direction X, and are slid and fixed.

The legs 40 and 41 project from the connecting portion 50 by a required length L1. The legs 40 and 41, the connecting portion 50, and the back side of the lower case 12 of the J / B 10 form a frame having a rectangular space 52, and the J / B 10 Is inserted through the wire harness.
Therefore, the length L1 of the legs 40 and 41 is set so that the wire harness can be smoothly inserted and appropriately pressed.

Leg 40 to be inserted into R / B fixing portion 13
Has a convex shape and a lower protruding portion 42a.
Is set to a size that can be inserted inside the dovetail groove 28,
The upper portion 42b is set to a size that can be inserted between the ribs 26 and 27. As shown in FIG. 5, a pair of separated bending portions 45 are provided at the distal end portion of the fixing portion 42 which is the insertion end.
46 are provided, and locking portions 45a, 46a protruding in directions away from each other are provided at the distal ends of the bending portions 45, 46.

On the other hand, the leg 4 inserted into the R / B fixing portion 14
The front end fixing portion 43 has an L shape, and has a protruding portion 43 at the lower end.
a is set to a size that can be inserted into the dovetail groove 28 ′, and the 43 b is set to a size that can be inserted between the rib 26 ′ and the case portion 35. Also, as shown in FIG. 5, a bending portion 47 protruding outward is provided at the tip end serving as the insertion end.
a is provided.

The length L2 of the tip fixing portion (including the bending portion) formed on the legs 40 and 41 on the R / B 11 side is:
The length L3 from the closing portion 30 at the insertion end of the R / B fixing portions 13 and 14 on the J / B 10 side to the locking portion 22 is set to be smaller than L3. (L2 <L3)

Next, the operation of assembling the J / B and R / B having the above configuration will be described. The R / B fixing portions 13 and 14 of the J / B 10 are arranged such that the distal end fixing portions 42 and 43 of the both leg portions 40 and 41 of the R / B 11 are arranged from the side where the bending portion is not provided.
From the insertion end P1 side. At this time, since the locking portion 22 provided at the insertion end is tapered outward, the fixing portions 42 and 43 can be easily inserted.

After passing between the locking pieces 32, 33 on both sides of the locking portion 22, the guide portion 21 reaches the guide portion 21, and the tapered portion 29 is also provided on the insertion side of the guide portion 21. It enters between the ribs 26 and 27. In the guide portion 21, the lower protruding portions 42a, 4a of the tip fixing portions 42, 43 are provided.
3a passes through the dovetail grooves 28, 28 'and the upper portions 42b, 43
b passes between the ribs 26 and 27, 26 'and the side wall of the case part 35 and is guided by the ribs.

After passing through the guide portion 21, it reaches the guide portion 20 on the terminal side. Similarly, the lower portions 42a and 43a pass through the grooves guided by the ribs, and finally, the distal end abuts on the closing portion 30. At this time, on the other end side of the fixed portions 42 and 43 where the bending portions 45 and 46 and 47 are provided, the bending portion 4 which is opened outward is provided.
When 5, 46, and 47 pass between the locking pieces 32 and 33 of the locking portion 22, they bend toward the inner sides adjacent to each other and pass.
After passing, the bending portions 45, 46, 47 open outward, and the bending portion 45 abuts on the locking portion 32, and 46, 47 abut on the end face of 33. At this time, the distal end comes into contact with the closing portion 30 and stops. Therefore, the fixed part of R / B11 is J / B1
Fixed to 0.

On the other hand, when the R / B 11 is to be removed from the J / B 10, the bending portions 45, 46 and 47 are bent using a tool and passed through the locking portion 22, and then slide in the direction opposite to the insertion direction. Just pull it out.

The present invention is not limited to the above embodiment, and it goes without saying that the guide portions 20 and 21 may be formed continuously.

[0028]

As is clear from the above description, according to the present invention, the R / B has a substantially U-shaped frame shape, and the convex fixing portion is formed at the tip end portion over the entire length of the leg portion protruding on both sides. After the fixing portion is inserted into the dovetail-shaped guide groove provided in the J / B and slid, the bending portion provided at the front end of the fixing portion is bent to allow the locking piece to pass through, and then outward. , And is locked by the locking portion. Therefore, the operability is extremely simple and the R / B can be fixed to the J / B.

Further, since the R / B has a substantially U-shaped frame shape as described above and a square frame-shaped space is formed between the R / B and the back surface of the attached J / B, the J / B is formed in the space. By inserting the wire harness connected to the wire harness, the wire harness can be pressed and guided, and the wire harness can be protected.

Further, as described above, the fixed portions of J / B and R / B are inserted and locked in the dovetail groove over the entire width direction, and automatically after the bent portion at the tip is bent. In this configuration, the lock can be easily and securely performed, and there is no risk of breakage of the lock portion. In addition, the lock can be released only by bending the bending portion at the distal end, and it can be easily removed.

[Brief description of the drawings]

FIG. 1 is a front view showing an embodiment of the present invention and showing a state in which an R / B is attached to a J / B.

FIG. 2 is a front view showing the back side of the J / B shown in FIG.

FIG. 3 is an enlarged view of a main part of FIG. 2;

FIG. 4 is a sectional view of FIG. 3;

FIG. 5 is a front view of the R / B shown in FIG.

FIG. 6 is a side view of FIG. 5;

FIG. 7 is a plan view of FIG. 6;

FIG. 8 is a schematic perspective view showing a conventional mounting structure.

[Explanation of symbols]

 10 J / B 11 R / B 12 Lower case 13, 14 R / B fixing part 20, 21 Guide part 22 Locking part 26, 27 Rib 28 Groove 30 Closing part 32, 33 Locking piece 40, 41 Leg 42 Connecting part 43, 44 Fixing part 45, 46, 47 Flexing part 50 Connecting part 51 Relay box 52 Square space

Continued on the front page (58) Surveyed fields (Int.Cl. ⁶ , DB name) H01H 45/02-45/04 H01H 50/04 B60R 16/02 H05K 7/14 H02G 3/08-3/20

Claims (2)

(57) [Scope of request for utility model registration] 1. A relay block having a substantially U-shaped frame shape,
A fixing portion to the junction block is formed at the tip of the leg protruding on both sides, and a relay box is provided on the connecting portion between the legs on a surface opposite to the leg protruding side, and the fixing portion at the tip of the leg is provided. A guide frame that inserts a wire harness that connects to the junction block between the back side of the junction block and the U-shaped frame-shaped relay block, and is detachably locked and attached to the fixed part formed on the back side of the junction block. The mounting structure of the relay block to the junction block characterized by having a part. 2. A projecting fixing portion is formed at the tip portion over the entire length of the leg portion on both sides of the relay block, and the fixing portion is inserted and locked in a dovetail-shaped guide groove provided in the junction block. At the same time, a bent portion is provided on the insertion end side of the fixed portion, and the bent portion is bent to pass through the locking portion provided on the junction block, and then is opened outward and locked by the locking portion. A structure for mounting a relay block to the junction block according to claim 1.