JP2018206540A - On-vehicle electric connection box - Google Patents

Abstract

To detect mating of a connector in a process for housing an electric/electronic component mating a connector in the case body of an electric connection box, and to eliminate occurrence of biting of a wire connected with the connector.SOLUTION: In an on-vehicle electric connection box where an electric/electronic component is inserted into the housing parts of the upper and lower openings of the case body of the electric connection box from above, and fixed in place, and a connector connecting a wire to the connector fitting part on the bottom face of the housing of the electric/electronic component, the electric/electronic component includes a connector cover having locking means being moved from the direction parallel with or orthogonal to the wiring direction of wire to a housing external surface and fixed. The connector cover includes a detection projection that cannot be locked to the housing external surface by the locking means, when coming into contact with the connector at a half fitting position, and wire guide projections for holding the wire connected to the connector with a lower part of the detection projection.SELECTED DRAWING: Figure 5

Description

  The present invention relates to an on-vehicle electrical junction box, and more specifically, an electrical / electronic component such as a relay module housed in a board is inserted from above into a case of an electrical junction box such as a relay box mounted on a vehicle. In the electrical junction box in which the connector is fitted to the lower end, the wire connected to the connector is prevented from being bitten inside the case, and the fitting state of the connector is detected.

  With regard to this type of electrical connection box such as a relay box, as shown in FIGS. 9 (A) and 9 (B) in Japanese Patent Laying-Open No. 2015-8556, when the relay module 101 is fitted to the relay box 100, the relay module is used. In order to correct the complete fitting when the connector 110 fitted to the bottom surface of 101 is in a half-fitted state, the overhanging portion 120 is projected from the inner surface of the side wall of the relay box 100, and the overhanging portion 120 is half-fitted. It is made to contact | abut to the connector 110 of a fitting position, and is made to fit completely.

Japanese Patent Laying-Open No. 2015-8556

In the electrical junction box disclosed in Patent Document 1, when the connector fitted to the bottom surface of the relay module to be inserted into the relay box from above is in a half-fitted state, the connector comes into contact with the overhanging portion so that the connector is in a completely fitted position. Pushed up. However, as shown in FIG. 10, the electric wire 200 connected to the connector is easy to be caught between the overhanging portion 120 and the connector 110, and even if the upper surface of the overhanging portion 120 is an inclined surface, it is difficult to reliably remove the biting. is there.
As described above, when the electric wire is caught, the relay module is displaced above the predetermined position, and the lock coupling portion provided in the relay module and the relay box cannot be completely locked. There is a problem that the assembly work takes time.
Furthermore, there is a possibility that the circuit board accommodated in the housing of the relay module 101 will drop downward when pushed in from above the relay module.

  The present invention has been made in view of the above problems, and can detect whether a connector is fully fitted or half-fitted, and can prevent a circuit board in an electric / electronic component such as a relay module from falling off. It is an object of the present invention to provide an on-vehicle electrical junction box that does not cause biting due to the extension of the electric wire extending from the connector even when the connector is provided.

In order to solve the above-described problems, the present invention is configured such that an electrical / electronic component is inserted and fixed from above into a housing portion of an upper / lower opening of a case body of an electrical junction box, and an electric wire is connected to a connector fitting portion on a bottom surface of the housing of the electrical / electronic component. An in-vehicle electrical junction box to which the connected connector is fitted,
The electrical / electronic component comprises a connector cover having a locking means for moving and fixing to the outer surface of the housing from a direction parallel to or perpendicular to the wiring direction of the electric wire,
The connector cover includes a detection protrusion that cannot be locked to the outer surface of the housing by the locking means when contacting the connector in a half-fitting position, and an electric wire guide protrusion that sandwiches an electric wire connected to the connector at a lower portion of the detection protrusion. An in-vehicle electric junction box is provided.

  A receiving plate protrudes at a position opposite to the wall surrounding the electrical / electronic component housing, and prevents the circuit board housed in the electrical / electronic component housing from falling off.

  The connector cover is attached to the electrical / electronic component housing by sliding in parallel with the wire wiring direction along the back or surface of the housing from below the connector fitting direction, or orthogonal to the wire wiring direction. It is assumed that it is attached close to the back surface or the front surface of the hung jig from the direction in which it is performed.

A plurality of the connectors are fitted in parallel to the bottom surface of the electrical and electronic component,
The detection protrusion and the wire guide protrusion provided on the connector cover are provided in parallel in correspondence with each connector,
And each detection protrusion is provided with a pair of left and right protrusions to be brought into contact with the lower surfaces of both side walls of each connector housing, and the wire guide protrusion provided below each detection protrusion is also a pair of left and right protrusions, The electric wire is sandwiched between the electric wire guide protrusions as an electric wire insertion space, and the electric wire insertion space between the electric wire guide protrusions is narrower than the electric wire insertion space between the detection protrusions.

  The electrical junction box is a relay box, and is particularly preferably used when the electrical / electronic component inserted into the accommodating portion in the case body of the relay box is a relay module.

The electric connection box for on-vehicle use of the present invention has a detection projection and an electric wire when an electric and electronic component such as a relay module inserted into a housing portion of the case main body of the electric connection box is fitted with a connector connected to an electric wire terminal. A connector cover having guide protrusions is used. Whether the connector is half-fitted or fully-fitted can be detected by the connector cover, and the wires connected to the connector are gathered so as not to spread, and the biting of the wires can be prevented.
And since the receiving plate part which receives even if the circuit board accommodated in an electrical / electronic component moves below protrudes from the wall surrounding an accommodating part, falling-off of this circuit board can be prevented. In addition, the electric wire extending from the connector can be prevented from being caught in the gap between the receiving plate portion and the electric / electronic component by pinching the electric wire with the electric wire guide protrusion of the connector cover.

1A and 1B show a first embodiment of the present invention, in which FIG. 1A is a schematic exploded perspective view of a relay box, and FIG. It is sectional drawing of the state which accommodated the relay module in the case main body of the relay box. (A) is drawing which shows the state by which the connector fitted to the relay module was fully fitted, (B) is drawing which shows the state of a connector half-fitting. The connector cover which covers a relay module and a connector is shown, (A) is a front view, (B) is a BB line sectional view of (A), (C) is a principal part perspective view. The state which attached the connector cover to the connector and the relay module which are this fitting is shown, (A) is a front view, (B) is a principal part perspective view. The state which attached the connector cover to the connector and relay module which are half-fitting is shown, (A) is a front view, (B) is principal part sectional drawing. It is a principal part front view of the state which accommodated the relay module which connected the connector in the accommodating part. The second embodiment of the present invention is shown, (A) is a side view showing a direction in which the connector cover is attached to the relay module, (B) is a front view of the connector cover, and (C) is a state in which the relay module is accommodated in the case body. FIG. (A), (B) is a schematic sectional drawing which shows a prior art example. It is a schematic sectional drawing which shows the problem of the said prior art example.

Hereinafter, the present invention will be described in detail with reference to embodiments shown in the drawings.
1 to 7 show a first embodiment of the present invention.
The in-vehicle electrical junction box of the first embodiment is a relay box 1 mounted on an automobile, and the relay box 1 is an electrical and electronic device comprising a relay module 3 and a fuse block 4 from above in a case body 2 having an upper and lower opening. After the parts are inserted and accommodated, the lower cover 5 is joined to the lower part of the case body 2 and the upper cover 6 is joined to the upper part. The case main body 2 made of a resin molded product partitions the inside of the outer peripheral wall 2a into a housing portion 2b of the relay module 3 and a housing portion 2c of the fuse block 4 by a partition wall 2w.

  The relay module 3 houses a circuit board 11 on which a board relay is mounted in a vertically long rectangular parallelepiped housing 10 housed in the housing part 2b, and three connectors connected to the three board relays of the circuit board 11 Connector fitting portions 12 (12A, 12B, 12C) for fitting 15 (15A, 15B, 15C) are provided, and are exposed in parallel on the lower surface of the housing 10. Three identical connectors 15 connected to the ends of the plurality of electric wires 30 are fitted to these three connector fitting portions 12 to connect the board relay and the electric wires 30 via the circuit board 11. .

  As described above, the relay module 3 is inserted into the case body 2 of the relay box 1 from the upper surface opening in a state where the three connectors 15 are fitted in parallel to the bottom surface of the housing 10, and the lock frame 10 r provided on the outer surface of the housing 10. Is engaged with lock claws (not shown) provided on the inner surface of the outer peripheral wall 2a of the case body 2 and the opposite side surface of the partition wall 2W, and the relay module 3 is fixed to the housing portion 2b. At that time, the circuit board 11 in the relay module 3 that is pushed into the case body 2 from above is not dropped from the housing 10 by a downward load. Therefore, as shown in FIG. The receiving plate portions 2r1 and 2r2 protrude from the opposite side surfaces of the wall 2W so that the lower end surfaces on both sides of the circuit board 11 falling off can be supported.

It is necessary to insert the relay module 3 into the case body 2 after confirming that the connector 15 is completely fitted in the connector fitting portion 12 of the relay module 3.
As described above, when the receiving plate portions 2r1 and 2r2 are provided in the case body 2, the circuit board 11 can be prevented from falling when the relay module 3 is pushed into the housing portion 2b from above, but from the connector 15 downward. There is a possibility that the extending electric wire 30 may be caught in the gap C between the bottom surface of the housing 10 and the receiving plate portions 2r1 and 2r2. When the electric wire is bitten, the relay module 3 is not inserted to the proper position in the housing portion 2b, and there arises a problem that the lock engagement between the relay module 3 and the case body 2 cannot be performed.

  In order to detect the fitting state of the connector 15 to the connector fitting portion 12 of the relay module 3 and prevent the electric wire 30 from biting on the receiving plate portions 2r1 and 2r2 of the case body 2, in the present invention, A movable connector cover 20 shown in FIGS. 4 to 7 is provided. The connector cover 20 extends along the outer surface of the housing 10 upward from below (in the direction of arrow Z1 in FIG. 5) to the relay module 3 with the connector 15 connected to the electric wire 30 fitted to the bottom surface of the relay module 3. They are slid and attached.

  The connector cover 20 includes a support plate 21 having the same width as the outer surface on the back side of the housing 10, and is provided with a pair of left and right arms 22 extending upward after being refracted forward from both left and right sides of the support plate 21. A locking claw 23 is provided opposite to the upper end of 22. On the surface of the support plate 21, detection protrusions 24 (24A, 24B, 24C) are provided at three places spaced in the left-right direction. Each detection protrusion 24 includes a pair of left and right protrusions 24v and 24w, and a space between the protrusions 24v and 24w is an electric wire insertion space S1 of the electric wire 30 connected to the connector 15. As shown in FIG. 4C, each detection protrusion 24 is provided with a U-shaped frame portion 26 surrounding the rear upper portion of the connector 15, and protrudes forward and inwardly at both lower portions of the U-shaped frame portion 26. Protrusions 24v and 24w are provided.

  The three installation positions of the detection protrusions 24 (24A, 24B, 24C) correspond to the positions of the three connectors 15 (15A, 15B, 15C) arranged side by side on the lower end surface of the housing 10. In addition, when the connector 15 fitted to the lower end of the housing 10 is not half-fitted but at the fully-fitted position where the connector 15 is fitted completely, the upper surface of the detection projection 24 is placed on the lower surface of the connector housing of the connector 15. It is assumed that the connector cover 20 is disposed at a normal position with respect to the relay module 3. Therefore, when the three connectors 15 are fully fitted, when the connector cover 20 is slid from below to above in the direction of the arrow Z1, the locking claws 23 at the upper ends of the left and right arms 22 are It is assumed that the connector cover 20 can be fixed to the housing 10 by being locked in a locking recess 27 provided at the opposite position. That is, the locking claw 23 and the locking recess 27 serve as locking means for the connector cover 20 and the housing 10.

  In other words, if the connector 15 is not half-fitted but full-fitted, the connector 15 protrudes from the bottom surface 10b at the lower end of the housing 10 with a dimension L1, as shown in FIG. On the other hand, when the connector 15 is in a half-fitted state where the connector 15 is not completely fitted into the connector fitting portion 12, the connector L is larger than the dimension L1 and is larger than the dimension L1 from the bottom surface 10b of the housing 10 as shown in FIG. 15 protrudes. When the detection protrusion 24 comes into contact with the lower surface of the connector housing of the half-fitted connector 15, the connector cover 20 is positioned below the normal position of the relay module 3. Therefore, the locking claw 23 at the upper end of the arm 22 is not locked in the locking recess 27 of the housing 10, the connector cover 20 cannot be fixed to the housing 10, and it can be detected that the connector 15 is half-fitted. Yes.

  Electric wire guide protrusions 25 (25A, 25B, 25C) are provided below the three detection protrusions 24, respectively. Each electric wire guide protrusion 25 is also provided with a pair of left and right protrusions 25v and 25w having an electric wire insertion space S2. The electric wire insertion space S2 is narrower than the electric wire insertion space S1 on the detection projection 24 side, and the electric wires 30 connected to the connector 15 are gradually gathered so that the electric wires spread and the bottom surface of the housing 10 and the receiving plate portion 2r1. 2r2 is reliably prevented from being caught in the gap C.

  As described above, in the present invention, the relay module 3 is connected to the relay box 1 in a state in which the connector 15 connected to the terminal of the electric wire 30 is fitted to the connector fitting portion 12 on the bottom bottom surface of the housing 10 of the relay module 3. The connector cover 20 is attached below the relay module 3 before being inserted into the case body 2 from above. That is, the electric wire 30 is slid upward in the length direction of the electric wire 30 while passing through the electric wire insertion space S2 of the electric wire guide protrusion 25 and the electric wire insertion space S1 of the detection protrusion 24. When the upper surface of the detection protrusion 24 comes into contact with the lower surfaces of the left and right side walls of the connector housing of the connector 15, the sliding of the connector cover 20 is stopped.

  At this position, when the locking claw 23 at the upper end of the arm 22 protruding upward on the left and right sides is locked to the locking recess 27 of the housing 10 of the relay module 3, the connector 15 is in a completely fitted position. Can be detected as a fit. On the other hand, if the locking claw 23 cannot be locked to the locking recess 27, it can be detected that the connector 15 is half-fitted. Thereby, before inserting the relay module 3 in the case main body 2, the connector 15 can be pushed in again and can be finally fitted.

  As described above, when the connector 15 connecting the electric wire 30 is inserted into the housing portion 2b of the case body 2 in a state where the connector 15 is fully fitted to the housing 10 of the relay module 3, as shown in FIG. The electric wire 30 converged in the electric wire insertion spaces S1 and S2 of the protrusion 25 does not spread. Therefore, the electric wire can be pulled out downward without being caught in the gap C between the receiving plate portions 2 r 1 and 2 r 2 on both sides and the housing 10. In addition, even if the circuit board 11 in the relay module 3 is likely to drop downward due to the pushing from above, it can be received by the receiving plate portions 2r1 and 2r2. In addition, the housing 10 in which the connector 15 is fitted in the normal position can smoothly lock and connect the lock frame 10r of the housing 10 and the lock claw on the case body 2 side in the case body 2.

As described above, the relay module 3 is inserted and fixed in the housing portion 2b of the case body 2 and the fuse block 4 is inserted and fixed in the housing portion 2c, and then the lower cover 5 and the upper cover 6 are lock-coupled to the case body 2 and relayed. Box 1 is being assembled.
The relay module 3 housed in the housing portion 2b of the case body 2 is attached to the lower cover 5 attached to the lower surface of the case body 2 by pulling out the electric wire 30 drawn downward from the connector 15 fitted to the bottom surface thereof from the lower end opening of the housing portion 2b. It is pulled out from the provided wire harness insertion port.

  In the first embodiment, the connector cover 20 is slid from below along the rear surface of the housing 10 of the relay module 3 in a state where the connector 15 connecting the electric wire to the relay module 3 is fitted. By only moving, it is possible to detect the half-fitting of the connector 15 and collect the electric wires 30 extending continuously downward from the connector 15 so as not to spread. Therefore, the relay module 3 can be smoothly inserted and locked without causing the electric wire 30 to bite into a predetermined position of the housing portion 2b of the case body 2 of the relay box 1.

A second embodiment is shown in FIGS.
The second embodiment is different from the first embodiment in that the direction of movement of the connector cover 20-B is an orthogonal arrow Z2. That is, the connector 15 is not attached in the length direction of the electric wire 30 of the connector 15 fitted to the connector fitting portion 12 of the relay module 3, but is connected from the rear perpendicular to the length direction (forward in the direction perpendicular to the arrow Z1). The cover 20-B is moved and brought close to the housing 10 of the relay module 3.

The connector cover 20 -B includes a support plate 21 that is vertically longer than that of the first embodiment, and locking claws 23 project from the left and right ends of the upper portion of the support plate 21.
In addition, on the lower front surface (front surface) of the support plate 21, detection protrusions 24 (24A, 24B, 24C) are provided at three locations spaced in the left-right direction, as in the first embodiment. Each detection protrusion 24 includes a pair of left and right guide protrusions 24v and 24w, and a space between the protrusions 24v and 24w is an insertion space for the electric wire 30 connected to the connector 15.
Furthermore, electric wire guide protrusions 25 are respectively provided below the three detection protrusions 24, and each electric wire guide protrusion 25 also includes a pair of left and right protrusions that open an electric wire insertion space.

The operation of the connector cover 20-B provided with the detection protrusion 24 and the wire guide protrusion 25 is the same as that of the first embodiment, and the locking is performed with the upper surface of the detection protrusion 24 in contact with the lower surface of the connector housing of the connector 15. If the claw 23 cannot be locked in the locking recess 27 of the housing 10 of the relay module, the connector 15 can be detected as half-fitted, and if it can be locked, it can be detected as full-fitted.
Other functions and effects are the same as those of the first embodiment, and a description thereof is omitted.

  In the first and second embodiments, the case where the relay module 3 in which an electric wire is connected to a connector is inserted into a housing provided in the case body of the relay box is employed. It is preferably used when detecting the connector fitting state of the connected electric and electronic parts and when it is necessary to prevent the electric wires from becoming widened so that the electric wires do not spread.

DESCRIPTION OF SYMBOLS 1 Relay box 2 Case main body 2a Peripheral wall 2b, 2c Housing part 2w Partition wall 2r1, 2r2 Receptacle part 3 Relay module 4 Fuse block 5 Lower cover
6 Upper cover 10 Housing 11 Circuit board 12 Connector fitting portion 15 (15A, 15B, 15C) Connector 20, 20-B Connector cover
21 support plate 23 locking claw 24 detection protrusion 25 electric wire guide protrusion 30 electric wire S1, S2 electric wire insertion space

Claims (5)

An electric / electronic component is inserted and fixed from above into the housing part of the upper / lower opening of the case main body of the electric junction box, and a connector connected with an electric wire is fitted to the connector fitting portion on the bottom surface of the housing of the electric / electronic component. An electrical junction box,
The electrical / electronic component comprises a connector cover having a locking means for moving and fixing to the outer surface of the housing from a direction parallel to or perpendicular to the wiring direction of the electric wire,
The connector cover includes a detection protrusion that cannot be locked to the outer surface of the housing by the locking means when contacting the connector in a half-fitting position, and an electric wire guide protrusion that sandwiches an electric wire connected to the connector at a lower portion of the detection protrusion. An in-vehicle electrical junction box characterized by   The in-vehicle device according to claim 1, wherein a receiving plate portion is protruded at a position opposite to a wall surrounding the housing portion of the electrical / electronic component, and is used for preventing the circuit board housed in the housing of the electrical / electronic component from falling off. Electrical junction box.   The connector cover is attached to the housing of the electrical / electronic component by sliding parallel to the wire wiring direction along the back or surface of the housing from the lower side of the connector fitting direction, or orthogonal to the wire wiring direction. The in-vehicle electric junction box according to claim 1 or 2, wherein the electric connection box is mounted close to the back surface or the front surface of the hung jig from a direction to be mounted. A plurality of the connectors are fitted in parallel to the bottom surface of the electrical and electronic component,
The detection protrusion and the wire guide protrusion provided on the connector cover are provided in parallel in correspondence with each connector,
And each detection protrusion is provided with a pair of left and right protrusions to be brought into contact with the lower surfaces of both side walls of each connector housing, and the wire guide protrusion provided below each detection protrusion is also a pair of left and right protrusions, 4. The wire insertion space between the wire guide protrusions is used as a wire insertion space, and the wire insertion space between the wire guide protrusions is narrower than the wire insertion space between the detection protrusions. The electric junction box for vehicles described in 1.   5. The vehicle-mounted vehicle according to claim 1, wherein the electrical junction box is a relay box, and the electrical / electronic component inserted into a housing portion in a case main body of the relay box includes a relay module. Electrical junction box.

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