JP3310147B2 - Electrical distribution box - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric distribution box, and more particularly to an electric distribution box using a bus bar.

[0002]

2. Description of the Related Art Conventionally, as this type of electric wiring box, FIG.
A base unit of an electric door mirror disclosed in Japanese Utility Model Publication No. 6-21790 shown in FIG. 7 is known. Two motors 2 are provided on a lower case 1 formed in a substantially dish shape.
a, 2b are installed, and these two motors 2a, 2b
Busbars 3a to 3d for supplying power to the power supply are provided. The side wall 1a of the lower case 1 is partially cut out to form an opening 1a1, and the back wall thereof has grooves 4a to 4 cut out in a slit shape from the upper edge to the bottom wall 1b.
d is formed, and the bus bars 3a to 3d are arranged to stand upright with respect to the bottom wall 1b and pass through the grooves 4a to 4d. The ends 3a1 to 3d1 of the busbars 3a to 3d extend to the outside of the lower case 1 through the opening 1a1, and the spacer 1c formed in the opening 1a1.
They are held in parallel at intervals of 1 to 1c3. A box-shaped casing is configured by mounting an upper case (not shown) formed in an inverted dish shape so as to close the upper opening of the lower case 1.

A connector 6 having a female terminal fitting which has an outer shape which can be inserted into the opening 1a1 and which can be fitted and connected to the bus bars 3a to 3d projecting from the opening 1a1 is connected to the opening 1a1. By inserting in
Power is supplied from outside via the female terminal fitting.

[0004]

In the conventional electric wiring box described above, since the bus bars 3a to 3d pass through the wall surface of the lower case 1 serving as a casing, the bus bars 3a to 3d are inevitably formed in the grooves 4a.
To 4d, and the waterproof treatment of the grooves 4a to 4d is a problem. Further, since the bus bars 3a to 3d are gathered in one place, the structure becomes complicated.

[0005] The present invention has been made in view of the above problems, and has as its object to provide an electric wiring box capable of simplifying a connection structure with the outside and a waterproof treatment structure.

[0006]

In order to achieve the above object, the invention according to claim 1 is directed to a pair of an upper side and a lower side.
In the casing configured by combining the case members of
Electricity that incorporates electric equipment and busbars for wiring
A wiring box, wherein an electric wire is inserted through the lower case member.
A hole penetrates, and the bus bar is connected to the lower case.
The lower case member is disposed on the bottom surface of the member.
This electrical device is connected to one end as the electrical device is mounted
It is possible to form a pressure contact blade on the other end side.
Before joining the upper side case member,
With respect to the electric wire insertion hole of the lower case member, near the end
To insert an electric wire with a waterproof rubber stopper
In addition, of the inserted electric wires,
The end side is adjacent to the wire insertion hole in the casing
Both case members
A configuration in which the bus bar is pressed into contact with the press-contact blades in conjunction with
It has features in the place.

[0007]

[0008]

[0009]

According to the first aspect of the present invention , the bus bar is housed in a casing comprising a pair of upper and lower case members, and a wire insertion hole of the case member. The wire is inserted through the case member, and the end of the wire is pressed into contact with the press-contact blade at the end of the bus bar at the time of uniting by the press-contact guide structure formed in the case member to connect the wire.

[0010]

[0011]

As described above, according to the present invention, the electric wires are connected to the bus bar via the press-connecting blades by inserting the electric wires from the electric wire insertion holes and uniting the case members. It is possible to provide an electric wiring box that can be used.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a front view showing a base unit 10 of an electric door mirror to which an electric wiring box according to an embodiment of the present invention is applied. In FIG. 1, a base unit 10 serving as a casing includes an upper case 20 and a lower case 30 that form a pair of case members. The upper case 20 and the lower case 30 are each formed in a substantially dish shape, and the ends of the side walls 22 and 32 extending from the periphery of the ceiling surface 21 of the upper case 20 and the bottom surface 31 of the lower case 30 are abutted against each other. Make up the body.

In the present embodiment, the casing is applied to the base unit 10 of the electric door mirror. However, any casing may be used as long as it is necessary to house an electric device inside and form an electric wire with the outside. . As shown in FIG. 2, the base unit 10 has a press-contact blade 41 (41a, 41b, 41a, 41b) on the bottom surface 31 of the lower case 30.
Bus bar 40 (40a, 40b, 40
a, 40b) can be arranged, and the electric wire 50 can be pressed against the pressure contact blade 41 by a pressure contact guide structure provided in the upper case 20 and the lower case 30.
In the side wall 32 of the lower case 30 in the base unit 10, wire insertion holes 32a, 3 through which the wires 50 can be inserted.
2a are formed side by side in the horizontal direction.
Similarly, two electric wire insertion holes 32a, 32a are formed at positions on the opposite side substantially facing each other. As shown in FIG. 5, each of the electric wire insertion holes 32a has a tapered shape, and a waterproof rubber plug 51 is attached to the electric wire 50 through a large outer opening 32a2 which is open to the outside. The waterproof rubber plug 51 is prevented from entering inside by a small inner opening 32a1 which forms a watertight surface in close contact with the inner peripheral wall surface and opens inward. The press-contact guide structure is arranged adjacent to the bottom surface 31 of the lower case 30 in the vicinity of each inner opening 32a1, and the electric wire 50 inserted through the electric wire insertion hole 32a is connected to the press-connecting blade 41 near the inner opening 32a1. Can be pressed against

In this embodiment, the electric wire insertion hole 32a
Is formed so that the electric wire 50 can be inserted therein, the waterproof rubber plug 51 attached to the electric wire 50 is held in a water-tight manner, and further, it is formed so as to be adjacent to the press-contact guide structure, but the electric wire can be inserted. For example, a concave portion cut out from the upper end of the side wall 32 may be used. Needless to say, it is not always necessary to attach a waterproof rubber plug to the electric wire. However, a cylindrical waterproof rubber stopper 5
1 is mounted and water-tightly held by a tubular electric wire insertion hole 32a surrounding the entire circumference, it is possible to easily perform waterproof treatment, and the electric wire insertion hole 32a and the press-contact guide structure may be adjacent to each other. For example, by simply inserting the electric wire 50 into the electric wire insertion hole 32a, the electric wire 50 can be set at a predetermined position in the press contact guide, and the press contact work becomes easy.

In the base unit 10, a press-contact guide structure provided near the inner opening 32 a 1 of each electric wire insertion hole 32 a includes a lower guide 33 formed on the bottom surface 31 of the lower case 30 and an upper case 33 facing the lower guide 33. 20 and an upper guide 23 erected from a ceiling surface 21. The lower guide 33 is composed of two plate-like guide pieces 33a, 33a standing upright so as to face each other with a gap 33b equal to the diameter of the electric wire 50, and the upper guide 23 is a protruding plate that can be inserted into the gap 32b. It is formed in a shape. The gap 33b coincides with the insertion axis direction of the electric wire 50 in the electric wire insertion hole 32a, and a slit 42 (42a, 42b, 42a, 42) formed in each press-contact blade 40a is provided before and after the gap 33b.
b) are held facing each other. The lower guide 33 is slightly higher than the press-contact blade 40a so as to be able to hold the electric wire 50 above the opening of the slit 42. The upper guide 23 has a concave curved surface 23a corresponding to the outer peripheral surface of the electric wire 50 at the tip. Guide pieces 33a, 3
3a while making surface contact with the electric wire 50 held by 3a.
2 can be pushed in.

In the present embodiment, the press-contact guide structure is
The guide pieces 33a, 33a are configured so that the electric wire 50 can be held while being introduced onto the press contact blade 41. However, any structure may be used as long as the electric wire is pushed into the press contact blade so as not to be displaced. The contact piece may be positioned while slidingly contacting the electric wire and then pushed into the press contact blade. However, as long as the electric wire 50 is held so as to be introduced into the press contact blade 41 as in the present embodiment, the electric wire 50 is displaced even if the electric wire 50 is press-contacted when the base unit 10 is combined. It is pressed against the pressure contact blade 41 without being pressed. As described above, the press-contact blade 41 provided at one end of the bus bar 40 is positioned on each lower guide 33, and two adjacent bus bars 40 (40a, 40b) are connected to the lower case 30.
The male tabs 43 (43a, 43b) provided at the other end are bent so that they do not cross each other on the bottom surface 31 of the motor 60.
It is arranged so that it can be connected to.

As shown in FIG. 4, the press contact blade 41 is formed so that the plate material is bent and the plate material stands up in a U-shape. ,
A slit 42 cut from above is formed. The press contact blade 41 has a size surrounding the lower guide 33 from three sides, and the slit 42 is formed at a position corresponding to the gap 33b of the lower guide 33 as described above. On the other hand, the male tab 43 is, as shown in FIG.
1, the end of the bus bar 40 is bent to form a flat plate on the bottom surface 31. The motor 60 is mounted from above and the upper case 20 and the lower case 3 are mounted.
It is configured so that the electrical connection is completed while being clamped by the assembly of 0. Although the male tab 43a and the slit 42a on the bus bar 40a side are shown in FIGS. 3 and 4 among the two types of bus bars 40a and 40b, the bus bar 40b is almost the same.

In the present embodiment, the bus bar 40 is mounted on the bottom surface 31 of the lower case 30 and the end portion thereof has a press contact blade 4.
1 and a male tab 43 are provided, but it is sufficient if the male tab is housed in the casing and used for wiring and provided with a press contact blade at the end. You don't have to be. However, if it has a male tab, it can be directly connected to an electric device such as a motor, and the number of components can be reduced. Also,
The pressing blade 41 has a structure in which a slit 42 is formed in a portion parallel to each other of a plate material bent in a U-shape.
What is necessary is just to be able to press-connect the electric wire 50, and it does not necessarily have to be U-shaped or have a slit at two places.

The electric device is not limited to a motor, and may be any electric device. For example, the electric device may be a device that receives a signal or a device that emits light. It goes without saying that the wires can be changed accordingly. Next, the operation of the present embodiment having the above configuration will be described. Bottom 3 of lower case 30
The busbars 40 are disposed on the lower case 30 and two motors 60 are mounted on the lower case 30 at predetermined positions from above the male tabs 43 erected two by two. Then, each male tab 43 is pushed into the electrode portion of the motor 60, and the electrode portion and the male tab 43 are connected. Next, from the outside of the lower case 30,
The electric wire 50 to which the waterproof rubber plug 51 is attached is inserted into each of the electric wire insertion holes 32a. The waterproof rubber stopper 51 is inserted into the electric wire insertion hole 32.
a into the electric wire insertion hole 32a
The wire 50 is held in the wire insertion hole 32a while forming a water-tight surface inside. The distal end of the electric wire 50 penetrating through the side wall 32 is protruded and held between the guide pieces 33a of the lower guide 33 adjacent to the electric wire insertion hole 32a inside the lower case 30.

The electric wire 50 held by the lower guide 33 is located on the press-contact blade 41. When the electric wire 50 is assembled with the ceiling surface 21 of the upper case 20 facing from above the lower case 30, the electric wire 50 is Lower guide 33
The concave curved surface 2 of the upper guide 23
3 contacts. The concave curved surface 23 pushes the electric wire 50 deep into the slit 42 of the press contact blade 41 while making surface contact with the electric wire 50. As a result, the electric wire 50 is pressed against the press contact blade 41, so that the motor 60 and the external electric wire 50 are connected via the bus bar 40, which is a wiring in the base unit 10. At this time, since the motor 60 is sandwiched between the upper case 20 and the lower case 30, the electrical connection between the motor 60 and the male tab 43 of the bus bar 40 is also ensured.

As described above, the electric wire insertion hole 32a is formed in the side wall 32 of the base unit 10 composed of the lower case 30 and the upper case 20, so that the electric wire 50 can be inserted therein, and is adjacent to the electric wire insertion hole 32a. A lower guide 33 is formed on the bottom surface 31 of the lower case 30 and the lower guide 33 is formed on the ceiling surface 21 of the upper case 20.
By forming the upper guide 23 inserted between the gaps 33b, and forming the pressure contact blade 41 at one end of the bus bar 40 serving as the wiring of the motor 60 housed therein, and disposing it at the lower guide 33 portion. When the electric wire 50 is inserted through the electric wire insertion hole 32a and held by the lower guide 33, and the upper case 20 is covered on the lower case 30, the upper guide 23 pushes the electric wire 50 onto the press-contact blade 41 to be connected by pressure.

[Brief description of the drawings]

FIG. 1 is a front view of a base unit which is an electric wiring box according to an embodiment of the present invention.

FIG. 2 is a plan view of a lower case constituting the base unit.

FIG. 3 is a partially enlarged sectional view of the base unit.

FIG. 4 is a perspective view of a lower guide formed on a bottom surface of the lower case.

FIG. 5 is a partially enlarged sectional view of the base unit.

FIG. 6 is an exploded perspective view of a base unit which is a conventional electric wiring box.

FIG. 7 is a plan view of the base unit.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Base unit 20 ... Upper case 23 ... Upper guide 30 ... Lower case 32a ... Electric wire insertion hole 33 ... Lower guide 40 ... Bus bar 41 ... Pressure contact blade 42 ... Same slit 43 ... Male tab 50 ... Electric wire 51 ... Waterproof rubber stopper 60 ... Motor

Claims (1)

(57) [Claims] 1. A pair of upper and lower case members are provided.
Inside the united casing, electrical equipment and wiring
Electrical wiring box with a built-in busbar
An electric wire insertion hole penetrates the lower case member, and the bus bar is provided on a bottom surface of the lower case member.
And mounting of the electric equipment on the lower case member.
With the arrival of this electrical equipment and one end side can be connected
The press contact blade is formed on the other end side, and before the upper case member is combined, the lower
To the wire insertion hole of the side case member near the end.
When the wire with the water rubber stopper is inserted in close contact
The tip of the waterproof rubber plug out of the inserted wire.
Side is adjacent to the wire insertion hole in the casing.
Of the two case members
A configuration in which the bus bar is pressed against the press-contact blade of the bus bar with the combination.
Electrical wiring box which is characterized in that it is.