WO2012011395A1 - コネクタ、電気接続箱、及びコネクタの製造方法 - Google Patents
コネクタ、電気接続箱、及びコネクタの製造方法 Download PDFInfo
- Publication number
- WO2012011395A1 WO2012011395A1 PCT/JP2011/065656 JP2011065656W WO2012011395A1 WO 2012011395 A1 WO2012011395 A1 WO 2012011395A1 JP 2011065656 W JP2011065656 W JP 2011065656W WO 2012011395 A1 WO2012011395 A1 WO 2012011395A1
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- WIPO (PCT)
- Prior art keywords
- wall
- protrusion
- terminal fitting
- connector
- circuit board
- Prior art date
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/46—Bases; Cases
- H01R13/502—Bases; Cases composed of different pieces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/16—Making multilayered or multicoloured articles
- B29C45/1671—Making multilayered or multicoloured articles with an insert
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
- H01R12/70—Coupling devices
- H01R12/71—Coupling devices for rigid printing circuits or like structures
- H01R12/72—Coupling devices for rigid printing circuits or like structures coupling with the edge of the rigid printed circuits or like structures
- H01R12/722—Coupling devices for rigid printing circuits or like structures coupling with the edge of the rigid printed circuits or like structures coupling devices mounted on the edge of the printed circuits
- H01R12/724—Coupling devices for rigid printing circuits or like structures coupling with the edge of the rigid printed circuits or like structures coupling devices mounted on the edge of the printed circuits containing contact members forming a right angle
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
- H01R43/16—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for manufacturing contact members, e.g. by punching and by bending
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
- H01R43/18—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for manufacturing bases or cases for contact members
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
- H01R43/20—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for assembling or disassembling contact members with insulating base, case or sleeve
- H01R43/24—Assembling by moulding on contact members
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/1418—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles the inserts being deformed or preformed, e.g. by the injection pressure
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/14639—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles for obtaining an insulating effect, e.g. for electrical components
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/34—Electrical apparatus, e.g. sparking plugs or parts thereof
- B29L2031/3406—Components, e.g. resistors
Definitions
- the present invention relates to a connector, an electrical junction box, and a method for manufacturing the connector.
- the thing of patent document 1 is known as an electrical connection box mounted in a vehicle.
- This electrical junction box is formed by housing a circuit board in a synthetic resin casing.
- the casing includes an upper case that opens downward, and a lower case that closes the opening of the upper case.
- a circuit board is accommodated in an accommodation space formed by assembling the upper case and the lower case.
- the connector includes a synthetic resin connector housing having a hood portion that can be fitted to the mating connector.
- the connector housing is provided with a terminal fitting having a substantially L shape. One end of the terminal fitting is arranged in the hood. The other end of the terminal fitting penetrates the inner wall of the hood portion and is connected to a conductive path formed on the circuit board by a known method such as soldering.
- the connector is formed integrally with the upper case.
- the upper part, both side parts, and the rear part of the terminal metal fitting located on the side opposite to the hood part are covered with the wall part of the upper case.
- the circuit board and the connector housing are made of materials having different coefficients of thermal expansion, stress may be generated between the circuit board and the connector housing due to temperature changes. If this stress acts on the connection part between the terminal fitting and the conductive path of the circuit board, the reliability of electrical connection between the terminal fitting and the conductive path of the circuit board decreases, for example, a crack occurs in the soldered part. There is concern.
- the present invention has been completed based on the above circumstances, and provides a connector and an electrical junction box with improved electrical connection reliability between the terminal fitting and the circuit board, and a method for manufacturing the connector.
- the purpose is to provide.
- the present invention is a method for manufacturing a connector in which a terminal fitting is disposed in a connector housing having a hood portion that opens to the front, wherein the rod-shaped terminal fitting is placed on a first mold, and the first metal By injecting the first synthetic resin material into the mold cavity, there is a gap between the base wall through which the terminal fitting penetrates and the terminal fitting extending rearward from a position near the upper end of the base wall.
- the present invention is also a connector in which a terminal fitting having a substantially L shape is attached to a connector housing having a hood portion that opens to the front, and one end of the terminal fitting is disposed in the hood portion.
- the other end of the terminal fitting is connected to a conductive path formed on the circuit board, and the terminal fitting includes a first projecting portion projecting rearward from a rear wall of the hood portion, and the first projecting portion.
- a second projecting portion that is bent downward at substantially right angles from an end of the one projecting portion and connected to the circuit board, and the connector housing extends rearward from the inner wall of the hood portion.
- a protective wall that covers the top, sides, and rear of the first protrusion and the second protrusion with a gap between both the first protrusion and the second protrusion, Formed integrally with the connector housing There.
- the present invention provides an upper case that is open at the bottom, a lower case that closes the opening of the upper case, and a storage space that is formed by the upper case and the lower case in a state where the upper case and the lower case are assembled.
- a circuit board accommodated in the connector wherein the upper case has a connector housing having a hood portion opened forward and a terminal fitting having a substantially L shape attached thereto.
- the terminal fitting is bent downward at a substantially right angle from a first projecting portion projecting rearward from the back wall of the hood portion and an end portion of the first projecting portion.
- a second protrusion connected to the circuit board, and the connector housing extends rearward from the back wall of the hood portion and above the first protrusion and the second protrusion.
- a protective wall is formed integrally with the connector housing so as to cover both sides and the rear with a gap between both the first protrusion and the second protrusion.
- the stress generated between the circuit board and the connector housing due to the difference between the coefficient of thermal expansion of the circuit board and the coefficient of thermal expansion of the connector housing is caused by the first protrusion and the second protrusion. Is alleviated by bending deformation. Thereby, since it can suppress that a stress acts on a terminal metal fitting, a circuit board, and a connection part, the connection reliability of a terminal metal fitting and a circuit board can be improved.
- FIG. 1 is an exploded perspective view showing an electrical junction box according to an embodiment of the present invention.
- FIG. 2 is a plan view showing the electrical junction box.
- 3 is a cross-sectional view taken along line III-III in FIG.
- FIG. 4 is a front view showing the electrical junction box.
- FIG. 5 is an enlarged cross-sectional view of the main part showing the electrical junction box.
- FIG. 6 is a side view showing the primary molding part.
- FIG. 7 is a perspective view showing the next molding part.
- FIG. 8 is a cross-sectional view showing the first molding step.
- FIG. 9 is an enlarged cross-sectional view of a main part showing the second molding step.
- FIG. 10 is a cross-sectional view showing the upper case.
- the electrical junction box 10 includes a synthetic resin upper case 11 that is open at the bottom, and a synthetic resin lower case 12 that closes the opening of the upper case 11.
- the circuit board 14 is accommodated in the accommodating space 13 formed by the upper case 11 and the lower case 12.
- the upper side in FIG. 3 is the upper side
- the lower side is the lower side.
- the right side in FIG. 3 is the front and the left side is the rear.
- the left side in FIG. 2 is the left side
- the right side is the right side.
- the lower case 12 has a shallow dish shape that opens upward, and has a generally pentagonal shape when viewed from above. At the opening edge of the lower case 12, a welding rib 15 that protrudes upward and forms a closed loop shape is formed.
- the upper case 11 has a generally pentagonal shape when viewed from above.
- a lower case 12 is assembled below the upper case 11 so that the downward opening of the upper case 11 is closed.
- the welding rib 15 of the lower case 12 comes into contact with the opening edge of the upper case 11 from below.
- the welding rib 15 of the lower case 12 is vibration welded to the upper case 11.
- the welding rib 15 since the welding rib 15 has a closed loop shape, the welded portion between the lower case 12 and the upper case 11 is in an intimate contact state over the entire circumference. As a result, the lower case 12 and the upper case 11 are fixed in a liquid-tight manner.
- circuit board 14 As shown in FIG. 3, in the state where the upper case 11 and the lower case 12 are assembled, an accommodation space 13 for accommodating the circuit board 14 is formed between the lower surface of the upper case 11 and the upper surface of the lower case 12. .
- a circuit board 14 is accommodated in the accommodation space 13.
- the circuit board 14 has a substantially rectangular shape when viewed from above.
- a conductive path (not shown) is formed on one or both of the front and back surfaces of the circuit board 14 by a printed wiring technique.
- An electronic component 16 is connected to the conductive path by a known technique such as soldering.
- the circuit board 14 is formed with bolt insertion holes 18 through which the bolts 17 are inserted (see FIG. 1). As shown in FIG. 3, a boss 19 having a screw hole (not shown) protrudes from the lower surface of the upper case 11. The circuit board 14 is fixed to the upper case 11 by inserting the bolt 17 into the bolt insertion hole 18 from the back side (lower side in FIG. 3) and screwing it into the screw hole of the boss 19.
- Connector hood 20 As shown in FIG. 2, a plurality of (in the present embodiment, 3) opening forward (downward in FIG. 2) in the substantially rear portion (upper in FIG. 2) of the upper case 11 and in the substantially right half region.
- the connector hood part 20 is formed.
- the connector hood portion 20 has a substantially rectangular tube shape.
- tab-shaped terminal fittings 21 ⁇ / b> A are arranged in these connector hood portions. These terminal fittings 21 ⁇ / b> A penetrate the connector hood portion 20 and protrude into the accommodation space 13, and are then bent at a substantially right angle toward the circuit board 14.
- the end of the terminal fitting 21A bent toward the circuit board 14 is inserted into a through hole 22 formed in the circuit board 14 and connected to the conductive path by a known method such as soldering.
- a connector hood portion 20 that opens to the front is formed at a position substantially in the rear of the upper case 11 and near the left end.
- a tab-shaped terminal fitting 21 ⁇ / b> A disposed in the connector hood portion 20 is also connected to the circuit board 14.
- an enclosure 24 that opens to the front and accommodates the connector 23 is formed in a substantially rear portion of the upper case 11 and in a substantially left half region.
- the surrounding wall 24 has a substantially gate shape.
- two connectors 23 are arranged in the left-right direction (left-right direction in FIG. 4) inside the surrounding wall 24.
- the connector 23 is formed integrally with the upper case 11. A gap is formed between the surrounding wall 24 and the connector 23.
- the connector 23 includes a connector housing 25 made of synthetic resin.
- the connector housing 25 includes a hood portion 27 that opens forward (rightward in FIG. 5) and fits with the mating connector 26.
- a locking portion 28 that locks with the mating connector 26 is formed at a position near the front end portion.
- the locking portion 28 is locked from the front (right side in FIG. 5) with respect to a locking protrusion 29 that is formed to protrude from the mating connector 26, thereby 26 is restricted from moving forward from the inside of the hood portion 27.
- the locking projection 29 of the mating connector 26 is accommodated in a recess 30 formed by recessing in the inner wall of the hood 27 in a state where the mating connector 26 is properly fitted in the hood 27. It has become.
- the locking portion 28 is formed at a position ahead of the recess 30 in the hood portion 27.
- the mating connector 2626 accommodates a female terminal fitting 32 connected to the end of the electric wire 31.
- the terminal fitting 21B and the electric wire 31 are electrically connected.
- the connector housing 25 includes a primary molded portion 33 made of a first synthetic resin member, and a secondary molded portion 34 formed by further molding the primary molded portion 33 with a second synthetic resin material.
- the same synthetic resin is used for the first synthetic resin material and the second synthetic resin material.
- the primary molding part 33 and the secondary molding part 34 are integrally fixed, and the boundary part between the primary molding part 33 and the secondary molding part 34 cannot be clearly distinguished.
- different synthetic resins may be used for the first synthetic resin material and the second synthetic resin material.
- the primary molding portion 33 extends rearward (rightward in FIG. 6) from a base wall 35 through which the plurality of terminal fittings 21 ⁇ / b> B penetrates and a position near the upper end of the base wall 35.
- a cover wall 36 that covers the upper side of the terminal fitting 21B, and an extending piece 37 that extends forward (leftward in FIG. 6) from a position near the upper end of the base wall 35.
- the recessed portion 30 and the locking portion 28 described above are formed at a position near the front end portion of the extending piece 37.
- the base wall 35 constitutes the back wall 38 of the hood part 27 after the secondary molding part 34 is formed.
- the terminal fitting 21B is substantially L-shaped. One end of the terminal fitting 21B is disposed in the hood portion 27 and is connected to the female terminal fitting 32 of the mating connector 26. Further, the other end portion of the terminal fitting 21 ⁇ / b> B protrudes rearward from the hood portion 27.
- a portion of the terminal fitting 21B that protrudes rearward from the hood 27 includes a first protrusion 39 that extends rearward, a bent portion 40 that is bent downward at a substantially right angle at the end of the first protrusion 39, and A second projecting portion 41 extending downward from the bent portion 40.
- a through hole 22 is formed in the circuit board 14, and a lower end portion of the second protrusion 41 is inserted into the through hole 22 and connected to a conductive path of the circuit board 14 by a known method such as soldering. ing.
- the connector housing 25 extends rearward (leftward in FIG. 5) from the back wall 38, and above the first protrusion 39, the bent part 40, and the second protrusion 41 (see FIG. 5). 5 is formed integrally with the connector housing 25 so as to cover the left and right sides (the direction penetrating the paper surface in FIG. 6) and the rear (left side in FIG. 5). A gap is formed between the protective wall 42 and the first projecting portion 39, the bent portion 40, and the second projecting portion 41. Thereby, the 1st protrusion part 39, the bending part 40, and the 2nd protrusion part 41 are the states exposed from both the 1st synthetic resin material and the 2nd synthetic resin material. In other words, the rear portion of the connector housing 25 is covered with the protective wall 42 except for the lower part (the direction facing the circuit board 14).
- the protective wall 42 includes a primary molding portion 33 constituting the lid wall 36 and a secondary molding portion 34 formed by being fixed to the lid wall 36. As shown in FIG. 5, the protective wall 42 constitutes a part of the wall portion constituting the upper case 11.
- First step First, the pair of first molds 43A and 43B are opened.
- the rod-shaped terminal fitting 21 is placed at a predetermined position of one of the first molds 43A among the pair of first molds 43A and 43B.
- the other first mold 43B is clamped, and the liquid first synthetic resin material is injected into the cavities formed in the first molds 43A and 43B.
- the first molds 43A and 43B are opened in the front-rear direction (left-right direction in FIG. 8).
- the region of the cavity where the recess 30 is formed is in a direction parallel to the plate surface of the extension piece 37 and in the direction in which the extension piece 37 extends.
- a slide core 44 that slides in an orthogonal direction is disposed.
- the slide core 44 is slid and the slide core 44 is detached from the primary molding portion 33.
- the first molds 43A and 43B are opened, and the primary molding portion 33 is detached from the first molds 43A and 43B.
- the second molds 45A, 45B, and 45C are opened, and the primary molding portion 33 after the bending process is performed is placed at a predetermined position. Thereafter, the second molds 45A, 45B, 45C are clamped. In a state where the second molds 45A, 45B and 45C are clamped, the second synthetic resin material is then placed in the cavity formed between the primary molding part 33 and the second molds 45A, 45B and 45C39. By injecting 34, the secondary molding part 34 is formed.
- the second molds 45A, 45B, and 45C have a front second mold 45A that opens forward (in the direction indicated by arrow A) and a rear part (in the direction indicated by arrow B). It consists of a rear second mold 45B that opens and a lower second mold 45C that opens downward (in the direction indicated by arrow C).
- the second molds 45A, 45B, and 45C are in partial contact with the primary molding part 33 when the second molds 45A, 45B, and 45C are clamped.
- the second synthetic resin material does not flow into the closed space surrounded by the second molds 45A, 45B, 45C and the primary molding portion 33. This will be described in detail below.
- a front regulating wall 46 that protrudes rearward is formed in the front second mold 45A.
- the rear end portion of the front restricting wall 46 comes into contact with the front surface of the base wall 35 from the front in a state where the second molds 45A, 45B, and 45C are clamped.
- a region of the terminal fitting 21B that is disposed in the hood portion 27 is accommodated.
- a lower regulating wall 47 protruding upward is formed in the lower second mold 45C.
- the upper end portion of the lower regulating wall 47 comes into contact with the lower surface of the lid wall 36 from below with the second molds 45A, 45B, 45C being clamped.
- the rear end portion of the lid wall 36 projects rearward from the first projecting portion 39 of the terminal fitting 21B, and the upper end portion of the lower regulating wall 47 comes into contact with the rear end portion of the lid wall 36 from below.
- the lower regulating wall 47 is formed on both the left and right sides of the first protruding portion 39, the bent portion 40, and the second protruding portion 41 of the terminal fitting 21B.
- the lower regulating wall 47 comes into contact with the lower surface of the lid wall 36 and near the left and right side edges from below. Yes.
- the first projecting portion 39, the bent portion 40, and the second projecting portion 41 of the terminal fitting 21B are accommodated in the space enclosed and closed by the lower regulating wall 47 and the lid wall 36.
- the protective wall 42 is formed by the second synthetic resin material, and the second synthetic resin material is restricted from adhering to the first protruding portion 39, the bent portion 40, and the second protruding portion 41 of the terminal fitting 21B. It is like that.
- the second synthetic resin material is injected into the cavity surrounded by the front second mold 45A, the rear second mold 45B, and the lower second mold 45C, so that the wall portion of the upper case 11 is formed. It is supposed to be formed.
- the second molds 45A, 45B, 45C are opened, and the upper case 11 is detached from the second molds 45A, 45B, 45C. Thereby, as shown in FIG. 10, the upper case 11 is formed.
- the circuit board 14 on which the electronic component 16 is mounted is screwed to the lower surface of the upper case 11 with bolts 17.
- the terminal fittings 21 ⁇ / b> A and 21 ⁇ / b> B are inserted into the through holes 22 of the circuit board 14.
- the terminal fittings 21A, 21B and the through hole 22 are connected by a known method such as flow soldering.
- the lower case 12 and the upper case 11 are vibrated and welded by applying vibration to the lower case 12 and the upper case 11 in a state where the welding rib 15 of the lower case 12 and the opening edge of the upper case 11 are in contact with each other.
- the electrical junction box 10 is completed.
- the electric junction box 10 is used by being attached to a vehicle (not shown).
- the electrical junction box 10 can be attached to the vehicle in any posture as necessary.
- action and effect of this embodiment are demonstrated.
- the first projecting portion 39 projecting rearward of the connector housing 25, the upper portion of the bent portion 40 and the second projecting portion 41, the left and right sides, and the rear are the protective walls 42. Covered by. Since the protective wall 42 constitutes a part of the wall portion of the upper case 11, it is possible to prevent water, dust, and the like from adhering to the terminal fitting 21B. Moreover, it can suppress that a foreign material collides with the terminal metal fitting 21B.
- the protective wall 42 covers the first protrusion 39, the bent part 40, and the second protrusion 41 with a gap, and the first protrusion 39, the bent part 40, and the second protrusion 41 are It is in the state exposed from the 1st synthetic resin material and the 2nd synthetic resin material.
- the terminal fittings disposed on the circuit board 14 and the connector housing 25.
- the stress acting between 21B is absorbed by the first projecting portion 39, the bent portion 40 and the second projecting portion 41 being bent and deformed.
- an extension piece 37 extending forward from a position near the upper end portion of the base wall 35, and protruding from the end of the extension piece 37 to the terminal fitting 21B side, and a mating connector 26 and a latching portion 28 that latches with each other.
- the first synthetic resin material and the second synthetic resin material are formed of different synthetic resins. Compared with the manufacturing cost can be reduced.
- the connector 23 is formed integrally with the upper case 11 and the protective wall 42 forms a part of the wall portion of the upper case 11.
- the present invention is not limited to this.
- the connector 23 according to the invention may be applied to the board connector 23.
- the connector 23 is formed separately from the upper case 11 and the lower case 12, and is accommodated in the accommodation space 13 formed by assembling the upper case 11 and the lower case 12, and is formed in the upper case 11 or the lower case 12.
- the base wall 35 is formed with the extending piece 37 and the locking portion 28.
- the present invention is not limited to this, and the extending piece 37 and the locking portion 28 are omitted. May be.
- the second projecting portion 41 of the terminal fitting 21B is inserted into the through hole 22 formed in the circuit board 14 and soldered.
- a press-fit structure that elastically contacts the inner wall surface of the through hole 22 may be formed at the tip of the second protrusion 41.
- the tip of the second protrusion 41 may be bent at a right angle to form a crank shape and reflow soldered to a conductive path formed on the surface of the circuit board 14.
- the connector 23 is provided with a plurality of terminal fittings 21B.
- a single connector 23 may be provided with one terminal fitting 21B.
- the technology disclosed in the present specification is a method of manufacturing a connector in which a terminal fitting is disposed in a connector housing having a hood portion that opens forward, and the rod-like terminal fitting is placed on a first mold. Then, by injecting the first synthetic resin material into the cavity of the first mold, the base metal penetrates the terminal metal, and extends rearward from a position near the upper end of the base wall, so that the terminal metal A first molding step for molding a primary molding portion provided with a lid wall covering the upper portion with a gap; and the terminal fitting projecting from the base wall to the lid wall side from the end of the lid wall.
- the circuit board is bent downward at a substantially right angle.
- a second protrusion connected to the conductive path formed in The bending step to be formed and the primary molding portion are placed on the second mold, and the upper end edge of the lower regulating wall provided in the second mold extending vertically is applied to the lower surface of the lid wall from below.
- a secondary molded part that is fixed to the primary molded part is formed, and the primary molded part and the secondary molded part extend rearward from the hood part and the rear wall of the hood part.
- the technology disclosed in the present specification is a connector in which a terminal fitting having a substantially L shape is attached to a connector housing having a hood portion that opens forward, and one end of the terminal fitting is The terminal is disposed in the hood, the other end of the terminal fitting is connected to a conductive path formed on the circuit board, and the terminal fitting protrudes backward from the rear wall of the hood.
- a protrusion, and a second protrusion that is bent downward at a substantially right angle from the end of the first protrusion and connected to the circuit board, and the connector housing includes a rear wall of the hood. It extends rearward, and has a gap between both the first protrusion and the second protrusion on the upper side, both sides, and the rear of the first protrusion and the second protrusion.
- the protective wall covering the connector housing It is formed integrally with.
- the technology disclosed in the present specification includes an upper case having an opening at the bottom, a lower case that closes the opening of the upper case, and the upper case and the lower case in a state where the upper case and the lower case are assembled.
- a circuit board accommodated in an accommodation space formed by the terminal case wherein the upper case has a substantially L-shaped terminal fitting in a connector housing having a hood portion opened forward.
- the terminal fitting is integrally formed, one end of the terminal fitting is disposed in the hood portion, and the other end of the terminal fitting is a conductive path formed on the circuit board.
- the terminal fitting includes a first projecting portion projecting rearward from the back wall of the hood portion, and a substantially right angle from an end of the first projecting portion.
- a protective wall is formed integrally with the connector housing so as to cover the upper side, both sides, and the rear side of the protruding portion with a gap between both the first protruding portion and the second protruding portion.
- the stress generated between the circuit board and the connector housing due to the difference between the thermal expansion coefficient of the circuit board and the thermal expansion coefficient of the connector housing causes the first protrusion.
- the portion and the second protrusion are relaxed by bending deformation.
- the hood portion may be formed by the secondary molding portion that is fixed to the extension piece.
- the waterproofness of the connector can be improved.
- the first synthetic resin material and the second synthetic resin material may have the same synthetic resin.
- the manufacturing cost can be reduced.
- the protective wall may constitute a part of the wall portion of the upper case. According to this aspect, it can suppress that water and dust adhere to a terminal metal fitting with a protective wall.
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Connector Housings Or Holding Contact Members (AREA)
- Connection Or Junction Boxes (AREA)
- Manufacturing Of Electrical Connectors (AREA)
- Coupling Device And Connection With Printed Circuit (AREA)
Abstract
Description
11...アッパーケース
12...ロアケース
13...収容空間
14...回路基板
21B...端子金具
23...コネクタ
25...コネクタハウジング
27...フード部
28...係止部
33...一次成形部
34...二次成形部
35...基壁
36...蓋壁
37...延出片
38...奥壁
39...第1突出部
41...第2突出部
42...保護壁
43A,43B...第1金型
45A...前部第2金型(第2金型)
45B...後部第2金型(第2金型)
45C...下部第2金型(第2金型)
47...下部規制壁
ロアケース12は、上方に開口する浅い皿状をなしており、上方から見て概ね五角形状をなしている。ロアケース12の開口縁部には、上方に突出すると共に閉じたループ状をなす溶着リブ15が形成されている。
アッパーケース11は、上方から見て概ね五角形状をなしている。アッパーケース11の下方には、ロアケース12が組み付けられて、アッパーケース11の下向きの開口が塞がれるようになっている。アッパーケース11とロアケース12とが組み付けられると、ロアケース12の溶着リブ15がアッパーケース11の開口縁部に対して下方から当接する。この状態で、ロアケース12及びアッパーケース11に対して振動を与えることで、ロアケース12の溶着リブ15はアッパーケース11に振動溶着される。上述したように溶着リブ15は閉じたループ状をなしているので、ロアケース12とアッパーケース11との溶着部分は、全周に亘って切れ目なく密着した状態になっている。これにより、ロアケース12とアッパーケース11とは液密に固着されている。
図3に示すように、アッパーケース11とロアケース12とが組み付けられた状態で、アッパーケース11の下面とロアケース12の上面との間には回路基板14を収容する収容空間13が形成されている。この収容空間13内には、回路基板14が収容されている。回路基板14は、上方から見て略長方形状をなしている。回路基板14の表面及び裏面の一方又は双方にはプリント配線技術により図示しない導電路が形成されている。この導電路には電子部品16が半田付け等の公知の技術により接続されている。
図2に示すように、アッパーケース11の概ね後方部分(図2における上方)であって、且つ概ね右半分の領域には、前方(図2における下方)に開口する複数(本実施形態では3つ)のコネクタフード部20が形成されている。コネクタフード部20は略角筒状をなしている。図4に示すように、これらのコネクタフード部20内には、タブ状をなす端子金具21Aが配されている。これらの端子金具21Aは、コネクタフード部20を貫通して収容空間13内部に突出した後、回路基板14側に略直角に曲げられている。回路基板14側に曲げられた端子金具21Aの端部は、回路基板14に形成されたスルーホール22に挿通されて、半田付け等の公知の手法により導電路に接続されている。
図2に示すように、アッパーケース11の概ね後方部分であって、且つ概ね左半分の領域には、前方に開口すると共に、内部に、コネクタ23を収容する囲壁24が形成されている。囲壁24は略門形状をなしている。本実施形態においては、囲壁24の内部には、2つのコネクタ23が、左右方向(図4における左右方向)に並んで配されている。コネクタ23は、アッパーケース11に一体に形成されている。囲壁24とコネクタ23との間には隙間が形成されている。
図5に示すように、コネクタハウジング25には、奥壁38から後方(図5における左方)に延出されると共に、第1突出部39、屈曲部40及び第2突出部41の上方(図5における上方)、左右両側方(図6において紙面を貫通する方向)、及び後方(図5における左方)を覆う保護壁42が、コネクタハウジング25と一体に形成されている。保護壁42と、第1突出部39、屈曲部40及び第2突出部41の双方との間には、隙間が形成されている。これにより、第1突出部39、屈曲部40及び第2突出部41は、第1合成樹脂材及び第2合成樹脂材の双方から露出した状態になっている。換言すると、コネクタハウジング25の後方部分は、下方(回路基板14と対向する方向)を除いて保護壁42によって覆われている。
続いて、本実施形態に係る電気接続箱10の製造工程の一例を説明する。まず、アッパーケース11を製造する工程について説明する。
まず、一対の第1金型43A,43Bを型開きする。棒状をなす端子金具21を、一対の第1金型43A,43Bのうち、一方の第1金型43Aの所定位置に載置する。次いで、他方の第1金型43Bを型締めし、液体状の第1合成樹脂材を第1金型43A,43Bの内部に形成されたキャビティ内に注入する。
次いで、端子金具21のうち、一次成形部33の基壁35から後方に突出した部分について、蓋壁36の後端部よりも前側の位置において、公知の治具等を用いて、下方に略直角に曲げ加工を実行する。これにより、第1突出部39、屈曲部40及び第2突出部41を形成する。
次いで、第2金型45A,45B,45Cを型開きし、曲げ加工が実行された後の一次成形部33を所定の位置に載置する。その後、第2金型45A,45B,45Cを型締めする。第2金型45A,45B,45Cが型締めされた状態で、次いで、一次成形部33と、第2金型45A,45B,45C39との間に形成されたキャビティ内に、第2合成樹脂材34を注入することにより、二次成形部34を形成する。
続いて、本実施形態の作用、効果について説明する。本実施形態によれば、端子金具21のうち、コネクタハウジング25の後方に突出する第1突出部39、屈曲部40及び第2突出部41の上方、左右両側方、及び後方は、保護壁42によって覆われている。この保護壁42は、アッパーケース11の壁部の一部を構成しているので、端子金具21Bに、水や、埃等が付着することを抑制できる。また、端子金具21Bに異物が衝突することを抑制できる。
本発明は上記記述及び図面によって説明した実施形態に限定されるものではなく、例えば次のような実施形態も本発明の技術的範囲に含まれる。
(1)本実施形態においては、コネクタ23は、アッパーケース11と一体に形成されて、保護壁42はアッパーケース11の壁部の一部を形成する構成としたが、これに限られず、本発明に係るコネクタ23を基板用コネクタ23に適用してもよい。例えば、コネクタ23は、アッパーケース11及びロアケース12とは別体に形成され、アッパーケース11とロアケース12とを組み付けて形成された収容空間13内に収容されると共にアッパーケース11又はロアケース12に形成された開口からフード部27を露出した状態で回路基板14にボルト17締め等の公知の手段により固定される構成としてもよい。これにより、収容空間13内に侵入した水や、収容空間13内で結露した水等が端子金具21に付着することを抑制できる。
(2)本実施形態においては、基壁35には、延出片37及び係止部28が形成される構成としたが、これに限られず、延出片37及び係止部28は省略してもよい。
(3)本実施形態においては、端子金具21Bの第2突出部41は、回路基板14に形成されたスルーホール22内に挿通されてはんだ付けされる構成としたが、これに限られず、例えば、第2突出部41の先端にスルーホール22の内壁面に弾性的に当接するプレスフィット構造を形成してもよい。また、第2突出部41の先端を更に直角に曲げてクランク状に形成し、回路基板14の表面に形成された導電路に、リフロー半田付けする構成としてもよい。
(4)本実施形態においては、コネクタ23には複数の端子金具21Bが配設される構成としたが、1つのコネクタ23に1つの端子金具21Bが配設される構成としてもよい。
本明細書に開示された技術は、前方に開口するフード部を有するコネクタハウジングに端子金具が配設されてなるコネクタの製造方法であって、棒状をなす端子金具を第1金型に載置し、前記第1金型のキャビティ内に第1合成樹脂材を注入することによって、前記端子金具が貫通される基壁と、前記基壁の上端寄りの位置から後方に延びて前記端子金具の上方を隙間を有して覆う蓋壁と、を備えた一次成形部を成形する第1成形工程と、前記基壁から前記蓋壁側に突出する前記端子金具を、前記蓋壁の端部よりも前側の位置で略直角に曲げることにより、前記基壁から前記蓋板の延びる方向に突出する第1突出部と、前記第1突出部の端部において略直角に下方に曲げられると共に回路基板に形成された導電路に接続される第2突出部と、を形成する曲げ工程と、前記一次成形部を第2金型に載置し、前記第2金型に上下方向に延びて設けられた下部規制壁の上端縁を前記蓋壁の下面に下方から当接させて、前記下部規制壁及び前記蓋壁で閉塞された空間内に前記第1突出部及び前記第2突出部が配された状態で、前記第2金型のキャビティ内に第2合成樹脂材を注入することによって前記一次成形部に固着する二次成形部を形成し、前記一次成形部及び前記二次成形部によって、前記フード部と、前記フード部の奥壁から後方に延出されて前記コネクタハウジングと一体に形成されると共に、第1突出部及び第2突出部の上方、両側方、及び後方を、前記第1突出部及び前記第2突出部の双方との間に隙間を有して覆う保護壁と、を形成する第2成形工程と、を実行する。
本明細書に開示された技術によれば、端子金具と回路基板との電気的な接続信頼性を向上させることができる。
Claims (6)
- 前方に開口するフード部を有するコネクタハウジングに端子金具が配設されてなるコネクタの製造方法であって、
棒状をなす端子金具を第1金型に載置し、前記第1金型のキャビティ内に第1合成樹脂材を注入することによって、前記端子金具が貫通される基壁と、前記基壁の上端寄りの位置から後方に延びて前記端子金具の上方を隙間を有して覆う蓋壁と、を備えた一次成形部を成形する第1成形工程と、
前記基壁から前記蓋壁側に突出する前記端子金具を、前記蓋壁の端部よりも前側の位置で略直角に曲げることにより、前記基壁から前記蓋板の延びる方向に突出する第1突出部と、前記第1突出部の端部において略直角に下方に曲げられると共に回路基板に形成された導電路に接続される第2突出部と、を形成する曲げ工程と、
前記一次成形部を第2金型に載置し、前記第2金型に上下方向に延びて設けられた下部規制壁の上端縁を前記蓋壁の下面に下方から当接させて、前記下部規制壁及び前記蓋壁で閉塞された空間内に前記第1突出部及び前記第2突出部が配された状態で、前記第2金型のキャビティ内に第2合成樹脂材を注入することによって前記一次成形部に固着する二次成形部を形成し、前記一次成形部及び前記二次成形部によって、前記フード部と、前記フード部の奥壁から後方に延出されて前記コネクタハウジングと一体に形成されると共に、第1突出部及び第2突出部の上方、両側方、及び後方を、前記第1突出部及び前記第2突出部の双方との間に隙間を有して覆う保護壁と、を形成する第2成形工程と、を実行するコネクタの製造方法。 - 前記第1工程において、前記基壁の上端部寄りの位置から前方に延びる延出片と、前記延出片の先端に前記端子金具側に突出すると共に前記相手側コネクタと係止する係止部と、を形成すると共に、
前記第2工程において、前記延出片に固着する前記二次成形部によって前記フード部を形成する請求の範囲第1項に記載のコネクタの製造方法。 - 前記第1合成樹脂材と前記第2合成樹脂材とは同じ合成樹脂が用いられる請求の範囲第1項または請求の範囲第2項に記載のコネクタの製造方法。
- 前方に開口するフード部を有するコネクタハウジングに略L字形状をなす端子金具が取り付けられてなるコネクタであって、
前記端子金具の一方の端部は前記フード部内に配されており、前記端子金具の他方の端部は回路基板に形成された導電路に接続されており、
前記端子金具は、前記フード部の奥壁から後方に突出する第1突出部と、前記第1突出部の端部から略直角に下方に曲げられると共に前記回路基板に接続される第2突出部と、を備え、
前記コネクタハウジングには、前記フード部の奥壁から後方に延出されると共に、前記第1突出部及び前記第2突出部の上方、両側方、及び後方を、前記第1突出部及び前記第2突出部の双方との間に隙間を有して覆う保護壁が、前記コネクタハウジングと一体に形成されているコネクタ。 - 下方が開口されたアッパーケースと、前記アッパーケースの開口を塞ぐロアケースと、前記アッパーケースと前記ロアケースとが組み付けられた状態で前記アッパーケース及び前記ロアケースによって形成された収容空間内に収容される回路基板と、を備えた電気接続箱であって、
前記アッパーケースには、前方に開口するフード部を有するコネクタハウジングに略L字形状をなす端子金具が取り付けられてなるコネクタが一体に形成されており、
前記端子金具の一方の端部は前記フード部内に配されており、前記端子金具の他方の端部は前記回路基板に形成された導電路に接続されており、
前記端子金具は、前記フード部の奥壁から後方に突出する第1突出部と、前記第1突出部の端部から略直角に下方に曲げられると共に前記回路基板に接続される第2突出部と、を備え、
前記コネクタハウジングには、前記フード部の奥壁から後方に延出されると共に、前記第1突出部及び前記第2突出部の上方、両側方、及び後方を、前記第1突出部及び前記第2突出部の双方との間に隙間を有して覆う保護壁が、前記コネクタハウジングと一体に形成されている電気接続箱。 - 前記保護壁は、前記アッパーケースの壁部の一部を構成している請求の範囲第5項に記載の電気接続箱。
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2011
- 2011-07-08 CN CN2011800357494A patent/CN103026568A/zh active Pending
- 2011-07-08 WO PCT/JP2011/065656 patent/WO2012011395A1/ja active Application Filing
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Patent Citations (4)
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JPH06111865A (ja) * | 1992-08-06 | 1994-04-22 | Du Pont Singapore Pte Ltd | 面実装コネクタ装置及びその製造方法 |
JP2005007715A (ja) * | 2003-06-18 | 2005-01-13 | Sumitomo Wiring Syst Ltd | 二次成形部品 |
JP2007190777A (ja) * | 2006-01-18 | 2007-08-02 | Sumitomo Wiring Syst Ltd | 樹脂成形品の成形構造 |
JP2009291043A (ja) * | 2008-05-30 | 2009-12-10 | Sumitomo Wiring Syst Ltd | 電気接続箱 |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014162738A1 (ja) | 2013-04-05 | 2014-10-09 | 日本精工株式会社 | モータ制御装置及びその製造方法 |
US9184640B2 (en) | 2013-04-05 | 2015-11-10 | Nsk Ltd. | Motor controller and production method of the same |
JP6009604B1 (ja) * | 2015-03-30 | 2016-10-19 | 住友電装株式会社 | 電気接続箱 |
US9711891B2 (en) | 2015-03-30 | 2017-07-18 | Sumitomo Wiring Systems, Ltd. | Electrical junction box with ventilation hole in a hood portion |
Also Published As
Publication number | Publication date |
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JP5397338B2 (ja) | 2014-01-22 |
US20130109203A1 (en) | 2013-05-02 |
CN103026568A (zh) | 2013-04-03 |
US9570836B2 (en) | 2017-02-14 |
JP2012029402A (ja) | 2012-02-09 |
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