JP3435009B2 - Electrical junction box - Google Patents

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to an electrical junction box.

[0002]

2. Description of the Related Art Conventionally, there is a connector connecting structure as disclosed in Japanese Patent Application Laid-Open No. 61-45580 in a wire harness of an automobile or the like. FIG. 4 shows this structure, in which a plurality of composite terminals 3 are press-fitted into the branch connector 1, the base end side 3a of the composite terminals 3 is bent and attached to the printed circuit board 5 by soldering. The composite terminal 3 is thinly formed on the base end side 3a, and is easily bent and soldered.

On the other hand, there is a branch connection box using a pressure contact connector described in JP-A-3-27712. This will be described with reference to FIGS. 5 and 6. The electric wire pressure contact connector 7 includes a pressure contact terminal 11 in a connector housing 9, and a plurality of electric wires 15 are arranged on the wiring case 13 side. Then, the electric wire press-connecting connector 7 can be mounted on the wiring case 13 to connect the electric wires 15 to the press-connecting terminals 11 by press-connecting.

[0004]

However, in the example of FIG. 4, since the base end side 3a of the composite terminal 3 is bent and connected to the printed circuit board 5, the base end side 3a is thinly formed and the manufacturing is complicated. Also, since the connector 1 is screwed to the printed circuit board 5, the number of parts is large and the assembly is complicated. Further, since the base end side 3a of the composite terminal 3 is simply exposed, if a plurality of them are arranged side by side and are in close proximity to each other, they may come into contact with each other even with a manufacturing error or slight vibration, resulting in a decrease in reliability. There is.

On the other hand, in the examples of FIGS. 5 and 6, since the wire pressure welding connector 7 is used, the assembly is easy without causing an increase in the number of parts and the like. There is a problem that the pressure contact direction may be unreliable at the pressure contact portion because the pressure contact direction coincides with the direction in which the other connector is inserted into and removed from the electric wire pressure contact connector 7.

An object of the present invention is to provide an electrical junction box which has a small number of parts, can be easily assembled, and can improve the reliability of the pressure contact portion.

[0007]

According to a first aspect of the present invention, an L-shaped terminal having a terminal portion on one side facing the inside of the connector housing and the other side along the rear surface outside the connector housing is L-shaped as a whole. And a wire pressure contact portion is provided at the tip of the other side.
Wire crimping connector and the above wire crimping connector on the end face side.
Connector housing section for housing the connector
On the back of the ging, there is a shelf in the middle between the top and bottom.
And a terminal mounting surface having a multi-stage structure is formed and
It has a wiring board mounting surface that intersects the end surface, and accommodates the connector
The wire pressure contact connector is housed in the end part and the wire is attached to the end face.
Direct the insertion port of the press-connecting connector and attach the wiring board
One side cover for protruding the wire pressure contact portion of the L-shaped terminal
And attached to the wiring board mounting surface of the L-shaped terminal
A pressure that allows the cable to be crimped by facing the cable crimping part
A wiring board having a contact holding portion, and covering the wiring board
The other side cover that engages with the one side cover is provided .

Therefore, the connector housing portion of the one side cover is electrically charged.
A wire pressure welding connector is housed, and an electric wire is attached to the end face of the one side cover.
Direct the insertion port of the press-connecting connector and intersect the end face.
The wire pressure contact part of the L-shaped terminal can be projected on the wire plate mounting surface.
it can. Attach the wiring board to the wiring board mounting surface, and
Insert the wire pressure contact part through the pressure contact holding part so that the wiring board
The electric wire can be pressed. Also, engage with one side cover
The other side cover can cover the wiring board .

According to a second aspect of the present invention, there is provided an electrical contact according to the first aspect.
The connecting box, wherein the L-shaped terminal is the connector housing.
Are installed side by side on the connector housing, and
Either the wiring board or the connector accommodating portion of the one side cover
On the other hand, it is interposed between the other sides of the L-shaped terminals arranged side by side.
It is characterized in that an insulating portion is provided .

Accordingly, in addition to the effect of the invention of請Motomeko 1, co
Between the other side of the L-shaped terminals that are installed side by side in the connector housing.
Insulation can be used for insulation .

A third aspect of the present invention is the electrical junction box according to the first or second aspect , wherein the L-shaped terminal is the connector housing.
L-shaped end of the multi-stage provided in multiple stages for the housing
There is a mutual space between the other side of the child,
Insulating protrusions that fit between the other sides of the L-shaped terminals are provided .

Therefore, in addition to the operation of the invention of claim 1 or 2 , within the mutual space between the other sides of the L-shaped terminals provided in multiple stages.
Since the insulating protrusion of the wiring board fits, the other side of the L-shaped terminal is
Can be set and held .

The invention of claim 4 is any of claims 1 to 3.
An electrical connection box of crab described, one side of the other side cover
By engaging with the cover, the electric wire pressure welding connector
It is characterized in that it is locked in the connector accommodating portion .

Therefore, in addition to the operation of the invention according to any one of claims 1 to 3, the other side cover is engaged with the one side cover.
The connector for crimping the electric wire can be locked in the connector housing .

A fifth aspect of the present invention is the electrical junction box according to the fourth aspect, wherein the side surface of the connector accommodating portion and the connector are connected.
One side of the housing and one end of the one side cover
Providing a groove in the intersecting direction, and a protrusion that fits in the groove on the other
Provided, against the connector housing portion of the electric wire pressure-contact connector
It is characterized by guiding the fitting .

Therefore, in addition to the function of the invention of claim 4 , the groove is
Connector of the wire pressure welding connector
A fitting guide for the container can be performed.

[0017]

1 to 3 show an embodiment of the present invention, FIG. 1 is an exploded perspective view of an essential part of the whole, FIG. 2 is an exploded perspective view of a wire pressure welding connector, and FIG. FIG. 3 is an assembled sectional view of an essential part of 1 to 3 relate to an electric connection box such as a junction box, and the electric connection box has an under cover 17 as one side case, an upper cover 19 as another side case, a wire pressure welding connector 21, and a wiring board 23. It has and.

The wire pressure welding connector 21 is an L-shaped terminal 2.
5 are provided in a plurality of stages, for example, two stages, and a plurality of the L-shaped terminals 25 are arranged in parallel in each stage. Therefore, the connector housing 27 of the wire pressure welding connector 21
A shelf portion 31 is provided on the back surface 29 at an intermediate position between the upper and lower sides, and terminal mounting surfaces 33 and 35 having a two-step structure are formed. Insulating ridges 37 are provided on the terminal mounting surfaces 33 and 35 as insulating portions at predetermined intervals corresponding to the width of each L-shaped terminal 25. On the side surface in the longitudinal direction of the connector housing 27, a guide protrusion 39 is provided as a protrusion for a fitting guide.

The L-shaped terminals 25a and 25b are L-shaped as a whole, and the terminal portions 41a and 41b on one side have a tab terminal structure, and the wire pressure contact portions 45a and 45b are attached to the tips of the other sides 43a and 43b. Is provided. This L-shaped terminal 25
a and 25b, the terminal portions 41a and 41b on one side face the inside of the connector housing 27, and the other sides 43a and 43b on the rear surface 29 of the connector housing 27, that is, each terminal mounting surface 3
3, 35 are arranged between the insulating ridges 37, and the surface 3
It is in the form of projecting above the connector housing 27 along the lines 3, 35. Then, the upper and lower terminal mounting surfaces 3
The other side 4 of the L-shaped terminal 25 attached to each of 3, 35
There is a mutual interval between 3a and 43b.

A connector accommodating portion 49 is provided on the end cover 47 side of the under cover 17. A wiring board mounting surface 51 that intersects the end surface 47 is provided on the upper portion of the under cover 17. The connector accommodating portion 49 is
Connector housing 27 of the electric wire pressure welding connector 21
Corresponding to the shape of the above, it has a concave shape surrounded by the bottom portion 53, the step portion 55, the vertical wall portion 57 and the side wall portion 59.

A groove 61 for fitting and guiding the guide protrusion 39 of the connector housing 27 is provided in the side wall portion 59.

A wiring wire 63 is provided on the wiring board 23, and a pressure contact holding portion 65 is provided. The press-contact holding portions 65 are provided corresponding to the number of the L-shaped terminals 25,
Its cross-sectional shape is also a form having a slot and has a through hole 65a. An insulating protrusion 67 is provided on the lower side of the wiring board 23.

The upper cover 19 serves as the wiring board 2
3 and the electric wire press-connecting connector 21 are covered and engaged with the under cover 17. Both covers 1
The engagement between 7 and 19 is, for example, click engagement between the protrusion and the recess.

In assembling, first, the wire pressure welding connector 21 is housed in the connector housing portion 49 of the under cover 17. At the time of this accommodation, the guide protrusion 39 of the connector housing 27 is fitted into the groove 61 of the connector housing portion 49 to guide the fitting. When the wire pressure welding connector 21 is accommodated in the connector accommodating portion 49 by this guide, the bottom portion of the connector housing 27 is placed on the bottom portion 53 of the connector accommodating portion 49, and the shelf portion 31 becomes the step portion 55.
It becomes a form to get on. Further, the L-shaped terminal 25b on the lower tier has a form along the vertical wall portion 57 of the connector accommodating portion 49.
The wire pressure contact portions 45a, 45b on the other sides 43a, 43b of the letter terminals 25a, 25b project onto the wiring board mounting surface 51.

In this state, the wiring board 23 is placed on the wiring board mounting surface 51, and the wire pressure contact portions 45a and 45b are placed on the wiring board 23.
The pressure contact holding portion 65 is arranged so as to penetrate each through hole 65a. With this arrangement, the insulating protrusions 67 of the wiring board 23 allow the other sides 43a, 4 of the L-shaped terminals 25a, 25b.
The other sides 43a and 43b can be securely held by fitting between the 3b. Then, the press-connecting holding portion 65 is connected to the wiring line 6
Wire 3 and make pressure connection.

Thereafter, the upper cover 19 is attached to the wiring board 23.
The wiring board 23 is covered with the upper cover 19 by covering the wiring board 23 with the upper cover 19 and engaging with the under cover 17 side. As a result, the electric wire pressure welding connector 21 is also covered with the upper cover 19, and the electric wire pressure welding connector 21 is restricted from coming out of the connector accommodating portion 49 upward in the drawing. Therefore, the electric wire pressure welding connector 21 can be easily assembled without the need for screwing or the like, and an electric junction box that is easy to manufacture and assemble can be obtained.

Further, the insertion port 21 of the electric wire pressure welding connector 21
Since a is directed to the end surface 47 side of the under cover 17, the insertion / removal direction of the other connector with respect to the connector 21 is set to the wire press-connecting portions 45a and 45b.
Since it intersects with the pressure contact direction of No. 3, the influence of the connector insertion / removal force on the wire pressure contact parts 45a and 45b can be greatly suppressed, and the reliability of the pressure contact part can be significantly improved.

Further, the rear surface 2 of the connector housing 27
9, the insulating protrusion 37 is formed between the L-shaped terminals 25a and 25b.
Is provided, a plurality of L-shaped terminals 25a and 25b are provided.
Even if they are juxtaposed close to each other, they are not short-circuited with each other, and the electrical reliability can be significantly improved.

Further, the pulling-out force of the other connector with respect to the electric wire press-connecting connector 21 can be received also by the engagement of the guide ridge 39 and the groove 61, and also from this point, the reliability of the press-connecting portion is remarkably improved. be able to.

In addition, since the assembly is completed by engaging the guide projection 39 and the groove 61 and pressing the upper portion of the wire pressure welding connector 21 by the upper cover 19, the wire pressure welding connector 21 can be easily and surely held. Can be done.

[0031]

According to the first aspect of the present invention, the connector for wire pressure welding is provided.
Housing the connector in the connector housing of the one-side cover and remove the wiring board.
The wiring of the wiring board attached to the attachment surface can be easily pressed.
It is possible to make parts more easily than the ones that solder the terminals to the board.
The number of points can be reduced and manufacturing and assembling can be facilitated .

According to the invention of claim 2, the effect of the invention of claim 1
In addition to the result, in addition to the L-shaped terminals that are arranged in parallel by the insulating part
Performs insulation between side can with this <br/> to greatly improve the electrical reliability.

According to the invention of claim 3, in addition to the effect of the invention of claim 1 or 2 , insulation is provided between the other sides of the L-shaped terminals provided in multiple stages.
Can be held by the protrusion, greatly improving electrical reliability
You can do it.

In the invention of claim 4, any one of claims 1 to 3
In addition to the effects of some of the inventions, it is possible to reduce the number of parts
Manufacturing and assembling can be made extremely easy .

According to the invention of claim 5, in addition to the effect of the invention of claim 4 , the connector for wire pressure welding is formed by the engagement of the groove and the projection.
The force of the mating connector with respect to the connector
Can improve the reliability of the pressure contact part.
It Also, for the connector housing of the wire pressure welding connector
Positioning can be performed reliably, and one side cover and other
It is possible to securely hold the wire pressure welding connector between the side covers .

[Brief description of drawings]

FIG. 1 is an exploded view of an entire main part according to an embodiment of the present invention.

FIG. 2 is an exploded perspective view of the electric wire pressure welding connector of FIG.

FIG. 3 is an overall cross-sectional view of a main part according to the embodiment of the present invention.

FIG. 4 is an exploded perspective view of a conventional example.

FIG. 5 is an exploded perspective view of another conventional example.

FIG. 6 is a cross-sectional view according to another conventional example.

[Explanation of symbols]

17 Under cover (one side cover) 19 Upper cover (other side cover) 21 Wire pressure welding connector 21a outlet 23 wiring board 25a, 25b L-shaped terminal 27 Connector housing 29 back 37 Insulation ridge (insulation part) 39 Guide ridge (projection) 41a, 41b Terminal part 43a, 43b other side 45a, 45b Wire pressure contact part 47 Edge 49 Connector housing 51 Wiring board mounting surface 61 groove 63 cable 65 Pressure contact holder 67 Insulation ridges

─────────────────────────────────────────────────── ─── Continuation of front page (56) Reference JP-A-3-277125 (JP, A) JP-A-8-308066 (JP, A) JP-A-8-306425 (JP, A) JP-A-8- 223741 (JP, A) JP-A-6-290828 (JP, A) JP-A-5-174898 (JP, A) Actually developed JP-A-11784 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) H01R 4/24 H02G 3/16

Claims (5)

(57) [Claims] 1. A terminal portion on one side faces inside the connector housing, and the other side extends along a rear surface outside the connector housing,
An L-shaped terminal having an L-shape as a whole is provided, an electric wire pressure contact portion is provided at the tip of the other side, and a shelf portion is provided at an upper and lower middle portion on the back surface of the connector housing, so that a terminal mounting surface having a multi-stage structure is provided. A formed wire crimping connector and a connector housing for accommodating the wire crimping connector on the end face side.
A wiring board mounting surface that intersects with the end surface is provided
The electrical wire pressure welding connector in the connector housing.
And direct the insertion port of the wire pressure welding connector to the end face,
Also, project the wire pressure contact portion of the L-shaped terminal on the wiring board mounting surface.
One side cover to be taken out and electric wire of the L-shaped terminal attached to the wiring board mounting surface
A pressure contact that allows the wiring wire to be pressed against it by passing through the pressure contact part.
A wiring board having a holding portion and another side cover that covers the wiring board and engages with the one side cover.
An electrical junction box characterized by having a bar . 2. The electrical junction box according to claim 1, wherein a plurality of the L-shaped terminals are arranged side by side in the connector housing.
Is, the one side and the back of the connector housing and the circuit board
The side-by-side installation on either side of the connector housing of the cover
An electrical junction box, characterized in that an insulating portion is provided between the other sides of the L-shaped terminals provided . 3. The electrical junction box according to claim 1 , wherein the L-shaped terminal is multi-staged with respect to the connector housing.
And the mutual spacing between the other sides of the multi-stage L-shaped terminals.
And is fitted to the wiring board between the other sides of the multi-stage L-shaped terminals.
An electrical junction box characterized by having an insulating protrusion . 4. The electrical junction box according to claim 1 , wherein the one side cover is engaged with the other side cover by the engagement.
An electrical junction box, characterized in that a wire pressure welding connector is locked in the connector accommodating portion . 5. The electrical junction box according to claim 4 , wherein a side surface of the connector accommodating portion and the connector housing are provided.
One of the side surface and the direction of intersecting the end surface of the one side cover
A groove is provided, and a protrusion that fits into the groove is provided on the other side of the wire.
Guides the press-fitting connector to fit into the connector housing
An electrical junction box characterized by: