JPH0638338A - Press contact structure between bus bar and wire - Google Patents

Abstract

PURPOSE:To provide a press contact structure between a wire and a bus bar in which press contacted wire does not float and the profile of bus bar can be simplified. CONSTITUTION:A slot 43 having a blade 45 for press contacting a wire W is made at male terminal part 33 of a linking terminal 31 while a base board part 27 is folded, on the opposite sides thereof, at the terminal part 25 of a bus bar 23 thus providing a pair of curled parts 29, 29. The curled parts 29, 29 and the base board part 27 constitute a male terminal inserting part 35 to be inserted with the male terminal part 33 of the linking terminal 31. A wire inserting groove 39 is made in the base board part 27 between the curled parts 29, 29 along the inserting direction of the terminal part 25 and a wire retaining protrusion 41 is provided above the wire inserting groove 39.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pressure contact structure of a bus bar and an electric wire in an electric wiring box used for interconnection of wire harnesses, and in particular, a bus bar in which a bus bar and an electric wire are pressure connected to form a predetermined circuit. And the pressure welding structure of the electric wire.

[0002]

2. Description of the Related Art FIG. 10 shows an electric junction box 3 having a wiring board 1 described in Japanese Utility Model Laid-Open No. 63-113423. In the figure, the electrical junction box 3 is composed of a main cover 5 and an under cover 7, and the under cover 7 includes:
Wiring board 1 in which bus bar 9 and insulating board 11 are laminated is fixed and closed by main cover 5. A bus bar 9 is fixed at a predetermined position on the insulating plate 11 of the wiring board 1. As shown in FIG. 11, the bus bar 9 is formed by punching out a thin sheet metal into a desired pattern shape. A male terminal portion 15 standing upright on one side is formed on the one side, and the bus bar 9 is directly formed on the other side. A pressure contact piece 17 into which an electric wire W forming a wire harness that is connected and forms a predetermined circuit is inserted and pressure contacted is formed. The pressure contact piece 17 is a pair of upright standing walls 1
9 and 19 and U-shaped slots 21 and 21 provided in the standing walls 19 and 19.

In such a wiring board 1, a predetermined circuit is formed by connecting the bus bars 9 with the electric wires W, and the wire harnesses are connected to each other. Further, the male terminal portion 15 is connected to the counterpart terminal via the relay terminal 13.

It is to be noted that the one using a pressure contact structure for connecting an electric wire and a terminal is disclosed in Japanese Utility Model Publication No. 1-103168 and Japanese Utility Model Publication No.
It is proposed in Japanese Patent No. 166419 and Japanese Utility Model Laid-Open No. 2-68618.

[0005]

However, in the above-described wiring board 1, since the pressure contact piece 17 against which the electric wire W is pressure contacted is provided at a position different from that of the male terminal portion 15, another bus bar 9 is provided.
The shape is set so as not to interfere with. For this reason,
There is a problem that the shape of the bus bar 9 becomes complicated and the manufacturing cost becomes high.

Since the electric wire W inserted into the slots 21 and 21 is only inserted into the slots 21 and 21, the electric wire W may float.

Further, in the case of an electric wire having a large diameter, when the electric wire is pressed into the slot, the electric wire is loosened or broken, resulting in a very unstable state.

Therefore, an object of the present invention is to provide a press-contact structure for a bus bar and an electric wire, which enables the press-contacted electric wire to be stably press-contacted without floating, and which allows the bus bar to have a simple shape. And

[0009]

In order to achieve the above object, in the invention according to claim 1, a slot having a press-contact blade for press-connecting an electric wire is formed in the male terminal portion of the relay terminal, and the busbar terminal portion is formed. A pair of curl portions are provided by bending both sides of the board portion of the, and a male terminal portion insertion portion into which the male terminal portion of the relay terminal is inserted and fitted is formed by the curl portion and the substrate portion. An electric wire insertion groove is formed in the board portion between the curl portions along the insertion direction of the male terminal portion into the male terminal portion insertion portion, and an electric wire pressing protrusion is provided above the electric wire insertion groove. There is.

According to the second aspect of the present invention, the male terminal portion of the bus bar is formed with a slot to which the electric wire is pressed, and the electric wire and the male terminal portion are pressed to prevent the electric wire from coming off the slot. It is characterized in that the relay terminal is fitted to the male terminal portion of the bus bar.

According to the third aspect of the present invention, the male terminal portion of the bus bar is formed with a locking portion to which the electric wire is locked, and is locked to the locking portion when the bus bar is fitted to the male terminal portion. It is characterized in that the relay terminal is formed with a slot into which the electric wire is inserted and pressed.

[0012]

According to the first aspect of the present invention, when the electric wire is pressed into the slot of the relay terminal, the conductor of the electric wire comes into contact with the male type terminal portion to be electrically connected. Next, the male terminal portion of the relay terminal is inserted and fitted into the male terminal portion insertion portion of the bus bar terminal portion.
At this time, the electric wire pressed into the slot is inserted into the electric wire insertion groove formed in the male terminal portion of the bus bar, and the electric wire is pressed by the deepest part of the electric wire insertion groove to be completely inserted into the slot. When the male terminal part of the relay terminal is completely inserted in the male terminal insertion part of the bus bar terminal part, the wire retainer protrusions hold the wire in the slot to prevent the wire pressed against the slot from floating. .

According to the second aspect of the present invention, when the electric wire forming the predetermined circuit is press-fitted into the slot of the male terminal portion, the conductor of the electric wire forming the electric wire comes into contact with the male terminal portion and is electrically connected. To be done. Then, by inserting and fitting the relay terminal into the male terminal portion, the electric wire is prevented from coming out of the slot.

According to the third aspect of the present invention, after the electric wire forming the predetermined circuit is locked to the locking portion of the male terminal portion, the relay terminal is inserted and fitted into the male terminal portion. When the relay terminal is fitted to the male terminal portion, the electric wire forming the electric wire locked by the locking portion is pressure-contacted in the slot formed in the relay terminal,
The relay terminal and the electric wire are electrically connected.

[0015]

Embodiments of the wiring board according to the present invention will be described below with reference to the drawings.

First Embodiment FIGS. 1 to 3 show a bus bar 23 used in a wiring board (not shown) of the first embodiment. In the figure, a terminal portion 25 is formed at one end of the bus bar 23.
The terminal portion 25 has a pair of curl portions 29, 29 formed by bending both sides of a substrate portion 27 bent at a substantially right angle so as to approach each other. These curl portions 29,
A male terminal portion insertion portion 35 into which the male terminal portion 33 of the relay terminal 31 is inserted is formed between 29 and the substrate portion 27. In addition, a gap 37 is formed between the pair of curl portions 29, 29.
The wire insertion groove 39 is formed along the insertion direction of the male terminal portion 33 of the relay terminal 31 into the male terminal portion insertion portion 35, corresponding to this gap position. On the upper portion of the electric wire insertion groove 39, a rod-shaped electric wire pressing protrusion 41 is provided so as to project from the substrate portion 27.

On the other hand, the relay terminal 31 is a so-called male-male terminal, and a male terminal portion 33 is formed at one end of the plate shape, and a slot 43 having a wide opening is formed in the male terminal portion 33. There is. Pressure contact blades 45 are formed on the inner walls of the slots 43 facing each other, so that the conductors 55 and the male terminal portions 33 are electrically connected by peeling off the insulating portions of the electric wires W inserted into the slots 43. It has become. The other end is formed with a male terminal portion 47 whose cross-sectional area is gradually reduced, and is directly connected to a mating terminal fitting in a terminal accommodating chamber such as a connector.

According to this embodiment, the slot 43 is formed in the male terminal portion 33 of the relay terminal 31, and the electric wire pressed into the slot 43 is inserted into the electric wire insertion groove 39 and the electric wire insertion groove 39 formed in the terminal portion 25 of the bus bar 23. Since it is held down by the wire pressing protrusion 41, the wire does not float up from the slot 43,
It is possible to press the electric wire stably. Further, the shape of the bus bar 23 becomes simple.

In the above embodiment, the electric wire W is pressed into the relay terminal 31 in advance and then inserted into the male terminal portion insertion portion 35 of the bus bar 23. However, the present invention is not limited to this, and the male terminal portion insertion of the bus bar 23 is not limited to this. The electric wire W may be inserted into the portion 35 in advance, and the male terminal portion 33 of the relay terminal 31 may be inserted into the male terminal portion insertion portion 35 to press the electric wire W into the slot 43.

Second Embodiment FIGS. 4 to 6 show a bus bar 49 used in a wiring board (not shown) of the second embodiment. In this figure, the bus bar 49 has a slot 53 into which the electric wire W is inserted and pressed into contact with the male terminal portion 51. This slot 53
The opposing side walls 57, 57 have a width narrower than the outer diameter of the conductor 55 (see FIG. 5) of the electric wire W, and the opposite side walls 57, 57 are formed at an acute angle to form a pressure contact blade. This press-contact blade peels off the insulating portion of the press-fitted electric wire W to electrically connect the conductor 55 and the male terminal 51.

A so-called female-female terminal relay terminal 59 is fitted in the male terminal portion 51. The relay terminal 59 includes a board portion 61, and upper and lower two-stage female terminal portions 63 and 65 formed of a pair of curl portions which are bent inward in the same direction from both sides of the board portion 61. The male terminal portion 51 of the bus bar 49 is fitted to one (lower) of the female terminal portions 63 and 65, and the mating terminal 67 such as a fuse or a relay is fitted to the other (upper) thereof. Further, as shown in FIG. 6, when the male terminal portion 51 is fitted to the one female terminal portion 63, the board portion 61 prevents the electric wire W from coming out from the slot 53. .

According to this embodiment, the electric wire W is connected to the bus bar 49.
The pressure contact portion for connecting to the male terminal portion 5 of the bus bar 49
Since the bus bar 49 is formed into one, the shape of the bus bar 49 is simplified, and the connection portion of the electric wire W is formed in the male terminal portion 51, so that the bus bar circuit can be easily handled.

A mating terminal 67 is inserted into the female terminal portion 63 on the opposite side of the relay terminal 59.

Third Embodiment FIGS. 7 to 9 show a bus bar 69 used in a wiring board (not shown) of the third embodiment. In these figures, the bus bar 69 is the locking portion 7 where the electric wire W is locked to the male terminal portion 71.
3 is formed in a slot shape. The locking portion 73 is formed to have a width dimension equal to or larger than the outer diameter dimension of the electric wire W.

On the other hand, the relay terminal 75 fitted in the male terminal portion 71 is composed of a board portion 77 and two upper and lower arc-shaped female terminals bent inward in the same direction from both sides of the board portion 77. One of the female terminal portions 79 (downward)
The male terminal portion 71 of the bus bar 69 is fitted to the other end, and the mating terminal 67 such as a fuse or a relay is fitted to the other (upper). Further, a slot 83 is formed in the board portion 77. The width dimension of the slot 83 is the conductor 5 of the electric wire W.
It is set to be smaller than the outer diameter dimension of No. 5. Then, when the male terminal portion 71 is fitted into the one female terminal portion 79 of the relay terminal 75, the electric wire W locked by the locking portion 73 is press-fitted into the slot 83 as shown in FIG. The insulating portion is peeled off and the conductor 55 is electrically connected.

In the case of this embodiment, the electric wire W is connected to the bus bar 6
Since the press contact portion for connecting to 9 is formed on the relatively thin relay terminal 75, the press contact slot of the second embodiment in which the press contact slot is formed in the male terminal portion of the thick bus bar Manufacturing and dimensional control become easy. Moreover, since the relay terminal 75 is pressed into contact with the electric wire W locked by the locking portion 73 and is fitted into the male terminal portion 71, the locking portion 73.
The electric wire W is also prevented from coming off.

In addition, the crimping structure of the bus bar and the electric wire according to the present invention has a structure in which the electric wire drawn from the outside to the inside of the electric wiring box is connected to the bus bar to form a predetermined circuit. It can also be applied to a case where a bus bar is connected with an electric wire W to form a predetermined circuit.

[0028]

As described above, according to the pressure contact structure of the bus bar and the electric wire according to the present invention, the electric wire pressed against the slot formed in the relay terminal or the bus bar can be stably pressed without floating. .

Further, since the dedicated pressure contact portion is omitted from the bus bar, the shape of the bus bar is simplified and the circuit design of the bus bar is facilitated.

[Brief description of drawings]

FIG. 1 is a perspective view showing a bus bar and a relay terminal according to a first embodiment of the present invention.

FIG. 2 is a front view showing a bus bar and a relay terminal according to the first embodiment of the present invention.

FIG. 3 is a front view showing a state in which a relay terminal is fitted to the bus bar of the first embodiment.

FIG. 4 is a perspective view showing a bus bar according to a second embodiment of the present invention.

FIG. 5 is a front view showing a bus bar and a relay terminal of a second embodiment.

FIG. 6 is a rear view showing a state in which the relay terminal is fitted to the bus bar of the second embodiment.

FIG. 7 is a perspective view showing a bus bar according to a third embodiment of the present invention.

FIG. 8 is a front view showing a bus bar and a relay terminal of a third embodiment.

FIG. 9 is a front view showing a state in which a relay terminal is fitted to the bus bar of the third embodiment.

FIG. 10 is an exploded perspective view showing a conventional electric junction box.

FIG. 11 is a perspective view showing a conventional bus bar.

[Explanation of symbols]

 23 Bus Bar 25 Terminal Part 27 Substrate Part 29 Curl Part 31 Relay Terminal 33 Male Terminal Part 35 Male Terminal Part Insertion Part 37 Gap 39 Electric Wire Inserting Groove 41 Wire Pressing Protrusion 43 Slot 45 Pressure Contact Blade 47 Male Terminal Part W Electric Wire

Claims (3)

[Claims] 1. In a press-contact structure of a bus bar and an electric wire, in which a wire is pressed against a terminal portion of the bus bar via a relay terminal having a male terminal portion, a wire is pressed against the male terminal portion of the relay terminal. Forming a slot having a slot, and bending both sides of the board portion of the bus bar terminal portion to provide a pair of curl portions, and the curl portion and the substrate portion insert / fit the male terminal portion of the relay terminal. To form a male terminal portion insertion portion, to form a wire insertion groove along the insertion direction of the male terminal portion into the male terminal portion insertion portion in the substrate portion between the pair of curl portions, A pressure contact structure for a bus bar and an electric wire, characterized in that an electric wire pressing protrusion is provided above the electric wire insertion groove. 2. A busbar-electric wire press-contacting structure for forming a predetermined circuit by press-contacting a busbar having a male terminal portion fitted with a mating terminal such as a fuse via a relay terminal to form a predetermined circuit. A male terminal of the bus bar is formed by forming a slot into which the electric wire is pressed against the male terminal portion of the bus terminal, and preventing the electric wire from coming off from the slot when the electric wire and the male terminal portion are pressed against each other. The pressure contact structure between the bus bar and the electric wire, which is fitted to the part. 3. A bus bar-electric wire pressure contact structure for forming a predetermined circuit by press-contacting a bus bar having a male terminal portion fitted with a counterpart terminal such as a fuse via a relay terminal to form a predetermined circuit. A slot for forming the locking portion for locking the electric wire in the male terminal portion of the slot, into which the electric wire locked in the locking portion is inserted / press-contacted when the bus bar is fitted to the male terminal portion Is formed on the relay terminal, and the bus bar and the wire are pressure-welded.