JP3495635B2 - Wire biting prevention structure - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wire catching prevention structure for preventing a wire from being caught during lock engagement.

[0002]

2. Description of the Related Art Conventionally, an electric junction box 80 as shown in FIG. 5 has been proposed. This electric junction box 80 has a large number of electric wires 82.
A box-shaped connection box body 81 that accommodates the connection box body, a female lock member 84 formed on one side wall 83 of the connection box body 81, a lid 85 that is assembled to the connection box body 81, and a male member that is provided on the lid 85. And a mold lock member 86. The lid 85 is assembled to the connection box body 81 by engaging the female lock member 84 and the male lock member 86 with each other.

[0003]

However, when the electric wire 82 accommodated in the connection box main body 81 is missed at the time of assembling, the electric wire 82 'is provided between the male lock member 84 and the female lock member 81. There was a risk of being pinched (bitten). In the worst case, the electric wire 82 'may be broken. In view of the above points, it is an object of the present invention to provide an electric wire catching prevention structure that prevents the electric wire from being caught during lock engagement.

[0004]

In order to achieve the above object, the present invention is a structure in which a box-shaped main body for accommodating a large number of electric wires and a lid for covering the main body are assembled by a lock engagement. A female lock member formed by integrally forming a hood that traverses one side wall on the main body and having an insertion opening for the hood in the same plane as the free end of the one side wall;
An engagement arm to be inserted into the hood is provided integrally with the lid, and a wire lock prevention means is formed on a male lock member having a tip on the insertion side of the engagement arm. , Before
The wire catching prevention means is located inside the main body.
Inside the one side wall from the inner surface of the hood
It is common to form a wire guide surface that slopes downward toward
In the tip side of the engaging arm, the inclination direction of the wire guiding surface.
An electric wire biting-preventing structure that forms an electric wire pushing surface that is inclined in the opposite direction (claim 1). The wire push-out surface is characterized in that the wire push-out surface has a curved shape (claim 3).

According to the first aspect of the present invention, the female lock member has a hood that traverses one side wall of the main body, and a hood insertion port located in the same plane as the free end of the one side wall. The male lock member has an engaging arm that is integrally provided on the lid and is inserted into the hood, and a tip on the insertion side of the engaging arm. The wire catching prevention means is formed on the female lock member and the male lock member. In addition, the wire bite prevention means is
The electric wire guide surface formed on the hood of the locking member and the engaging arm.
The formed wire extrusion surface. The wire guide surface is the main body
Insert the hood inside to the inside from the inner surface of one side wall.
It is inclined downward toward. The wire pushing surface is the engaging arm
Incline to the tip side of the
There is. Therefore, the wire guide surface and the wire extrusion surface should face each other.
There is. Therefore, even when the electric wire accommodated in the main body is located at the insertion port of the hood, the electric wire catching prevention means pulls the electric wire back into the main body in the process of assembling the lid to the main body. As a result, the electric wire is not pinched (not bitten) between the lid and the main body.
In addition, the electric wire pops out from inside the main body and the hood is inserted.
When the lid is attached to the main body,
The wire pushing surface hits the wire and pushes the wire to the wire guiding surface.
You The wire guide surface guides the wire into the main body. Therefore, male
When the mold locking member is locked to the female locking member
Can accommodate the wire in the body.

[0006]

According to the second aspect, the shape of the wire pushing surface is curved. Therefore, when the lid and the main body are assembled, the electric wire is moved to the electric wire guiding surface side while sliding on the electric wire pushing surface. Therefore, an extra load (external force) can be removed from the electric wire as much as possible.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A specific example of an embodiment of the present invention will be described below with reference to the drawings. 1 to 4 show an embodiment of a wire catching prevention structure according to the present invention. As shown in FIG. 1 and FIG. 2, this wire catching prevention structure has a plurality of female lock members 2 integrally formed on a box-shaped main body 1 and a plurality of male lock members connected to a lid 3. 4 is provided with a wire catching prevention means 5. The lid 3 is assembled to the main body 2 by engaging the male lock member 4 with the female lock member 2.

The main body 1 includes an insole 6 into which a relay, a fuse and the like (not shown) are inserted, a peripheral wall (corresponding to one side wall in the claims) 7 standing upright along the peripheral edge of the insole 6, and the insole 6. It is composed of a mounting plate (not shown) extending from the peripheral edge and an introduction tube (not shown) for introducing the plurality of electric wires 8 into the insole 6. Since the plurality of female lock members 2 have the same configuration, only one will be described. The female lock member 2 includes a rectangular tube-shaped hood 10 that crosses the peripheral wall 7 of the main body 1, an electric wire guide surface 12 formed in the insertion port 11 of the hood 10, and a locking protrusion 13 provided in the hood 10. Become.

The left side wall 10a and the right side wall 10b of the hood 10
Means to cross the peripheral wall 7 of the main body 1 substantially vertically. Hood 1
A flexible piece 15 is formed on the front wall 10c of No. 0 through two slits 14, 14, and a locking projection 13 is integrally formed on the inner surface of the flexible piece 15. The insertion opening 11 of the hood 10 is located on the same plane as the free end 7a of the peripheral wall 7. The lid 3 is
Box-shaped lid body 20, a plurality of male lock members 4 integrally provided on the outer wall surface 20a of the lid body 20, and the lid body 20
And an attachment plate (not shown) extending from the outer wall surface 20a.

Since the plurality of male lock members 4 have the same structure, only one will be described. As shown in FIGS. 1 and 2, the male lock member 4 includes an engaging arm 21 extending in a direction (P direction) for covering the lid 3 on the main body 1, and a locking step portion 22 arranged on the engaging arm 21. , The wire pushing-out surface 23 formed from the tip 21d side of the engaging arm 21. The engagement arm 21 includes a left side wall 21b and a right side wall 21c that are formed in parallel with each other from the lid main body 20, and a front wall 2 that is provided on both side walls 21b and 21c.
1a and. The locking step portion 22 is the upper surface of the front wall 21a. Between the left side wall 21b and the right side wall 21c, there is a die-cutting hole 24 for resin-molding the engaging arm 4.

The wire catching prevention means 5 comprises a wire guiding surface 12 formed on the hood 10 and a wire pushing surface 23 formed on the engaging arm 21 so as to face the wire guiding surface 12.
The electric wire guiding surface 12 is a hood 10 located inside the main body 1.
A pair of the left side wall 10a and the right side wall 10b are arranged obliquely downward on the insertion port 11 side. Upper part 1 of the wire guide surface 12
2a is continuous with the inner surface 7b of the peripheral wall 7, and the lower part 12b is the insole 6
Connected to.

The wire pushing surface 23 is formed in a rounded shape (curved shape) in a diagonally upward direction from the tip 21d side of the left side wall 21b and the right side wall 21c. That is, by forming the wire pushing surface 23, the left side wall 21b and the right side wall 21c are in a state in which one corner is scraped off from the tip 21d side. The inclination direction of the wire pushing surface 23 is the wire guiding surface 1
The opposite of the tilt direction of 2. A pair of electric wire pushing surfaces 23, 2
3 is inserted between the pair of electric wire guide surfaces 12, 12. When the engagement arm 21 is inserted into the hood 10, the engagement step portion 22 is engaged with the locking protrusion 3.

Next, how the wire catching prevention means 5 prevents the wire 8 from being caught will be described. As shown in FIG. 1, a plurality of electric wires 8 are accommodated in the main body 1 by a desired method (for example, by hand). It suffices if all the electric wires 8 can be accommodated inside, but it is impossible to completely accommodate the electric wires 8. Figure 2
In some cases, the electric wire 8 ′ is lifted (jumped out) from the main body and is positioned on the insertion opening 11 of the hood 10, as shown in FIG. In that state, the lid 3 is attached to the main body 1. That is, the male lock member 4 of the lid 3 is inserted into and engaged with the female lock member 2.

At this time, as shown in FIG. 2, the electric wire pushing surface 23 of the male lock member 4 pushes the electric wire 8'located on the insertion port 11 toward the hood 10. The movement of the wire pushing surface 23 is synchronized with the lid 3. As shown in FIG. 3, the wire pushing surface 23
The electric wire 8 ′ pushed out by the abutment hits the electric wire guiding surface 12 of the female lock member 2. At the same time as covering the main body 1 with the lid 3, the electric wire 8 ′ is pushed by the electric wire pushing surface 23, so that the electric wire 8 ′ is slowly guided (guided) into the main body 1 along the electric wire guiding surface 12. As shown in FIG. 4, the male lock member 4
When the locking step portion 22 of is engaged with the locking protrusion 13 of the female lock member 2, the electric wire 8 ′ is guided from the electric wire guiding surface 23 to the insole 6 of the main body 1.

In this way, as shown in FIGS. 1 and 2, even if the electric wire 8'protrudes from the inside of the main body 1 to the outside, the lid 3
During the process of assembling the main body 1 into the main body 1, the protruding electric wire 8 ′ can be automatically accommodated in the main body 1 by the electric wire catching prevention means 5. Therefore, it is possible to prevent the electric wire 8 ′ from being caught in the step of assembling the lid 3 to the main body 1, regardless of whether or not the electric wire 8 ′ is protruding from the main body 1. This allows the main body 1
There is no fear of damaging the electric wire 8 (8 ') therein, and the work of assembling the lid 3 to the main body 1 becomes easy.

When the hood 10 of the female lock member 2 is formed integrally with the outer surface 7c of the peripheral wall 7, the hood 1
If the wire guide surface 23 is formed on the surface 0, the peripheral wall 7 becomes an obstacle and the effect of the present invention cannot be obtained. That is,
If the peripheral wall 7 is cut out along with the formation of the wire guide surface 23 on the hood 10, the strength of the female lock member 2 (hood 10) itself becomes weak. On the other hand, when the hood 10 of the female lock member 2 is arranged on the inner surface 7b of the peripheral wall 7, the rate at which the electric wire 8 is placed (positioned) in the insertion port 11 increases, so that the female lock member 2 is arranged. The location itself matters.

Further, when the insertion opening 11 of the hood 10 is not in the same plane as the free end 7a of the peripheral wall 7, the electric wire 8'floating (jumping out) from the inside of the main body 1 can be located on the insertion opening 11. It is not very popular. Therefore, when the lid 3 is assembled to the main body 1, the possibility that the electric wire 8 ′ is caught becomes low, so that the necessity of providing the electric wire catching means 5 is reduced. In addition,
This embodiment can also be used for an electric connection box (J / B) not shown, a protector for protecting a wire harness, and the like.

[0019]

As described above, according to the invention of claim 1, the hood of the male locking member traverses one side wall of the main body,
The insertion hole of the hood is in the same plane as the free end of the peripheral wall of the main body. On the other hand, the engaging arm of the male lock member is inserted into the hood, and the engaging arm has a flat tip on the insertion side. for that reason,
By forming the wire catching prevention means on the female lock member and the male lock member, the wire can be pulled back into the main body while the lid is being assembled to the main body. This can prevent the electric wire from being caught between the engaging arm of the lid and the hood of the main body. Therefore, after the male lock member is engaged with the female lock member, the electric wire that has jumped out (lifted) out of the main body can be reliably accommodated in the main body. In addition, electric wire biting means
Is tilted inward toward the hood of the female locking member.
The inclined wire guide surface and the engaging arm of the male lock member
The guide surface and the wire pushing surface inclined in the opposite direction. So
Therefore, before assembling the lid to the main body, put it on the hood you missed.
Push the positioned wire to the wire guide surface side by the wire pushing surface.
It can be put out and easily guided into the main body along the wire guide surface.
It This prevents the wires from getting caught after assembly.
It That is, if you miss the electric wire that jumps out of the main unit,
The electric wire can be reliably housed in the main body after assembly. Obey
Assembly is easier than before and the electric wire is
You can eliminate the worry of crushing and breaking the wire.

[0020]

According to the second aspect of the present invention, since the wire push-out surface is formed in a curved shape, an extra load (external force) is not applied to the wire during assembly. Therefore, damage to the electric wire can be prevented.

[Brief description of drawings]

FIG. 1 is a partial perspective view showing an embodiment of a wire catching prevention structure according to the present invention.

FIG. 2 is a sectional view taken along line XX in FIG.

FIG. 3 is a cross-sectional view showing a state in which an electric wire protruding from the inside of the main body is pressed against the electric wire guiding surface by the electric wire pushing surface in FIG. 2 so that the electric wire is guided to the electric wire guiding surface.

FIG. 4 is a cross-sectional view showing a state in which the lid is assembled to the main body in FIG.

FIG. 5 is a perspective view showing a conventional example.

6 is a cross-sectional view taken along the line YY of FIG.

[Explanation of symbols]

1 body 2 Female lock member 3 lid 4 Male lock member 5 Wire entrapment prevention means 7 peripheral wall (one side wall) 8,8 'electric wire 10 hood 11 openings 12 wire guide surface 23 Wire extrusion surface 21 engagement arm 21d tip

Claims (2)

(57) [Claims] 1. A structure in which a box-shaped main body that accommodates a large number of electric wires and a lid that covers the main body are assembled by lock engagement, and a hood that traverses one side wall of the main body is integrally formed with the main body. , A female lock member having an insertion opening of the hood in the same plane as the free end of the one side wall, and an engagement arm inserted into the hood and integrally provided on the lid, A wire lock prevention means is formed on a male lock member having a tip on the insertion side of the engagement arm, and the wire lock prevention means is located inside the main body.
The inside of the one side wall from the inner surface of the one side wall
When forming an electric wire guide surface that slopes downwards toward the side
In the tip side of the engaging arm, the inclination direction of the wire guiding surface.
An electric wire jam prevention structure characterized by forming an electric wire extrusion surface that is inclined in the opposite direction . 2. A structure for preventing biting wire of claim 1, wherein the shape of the electric wire extrusion surface is curved.