US20010008041A1 - Method for manufacturing insert-resin-molded product and product produced thereby - Google Patents
Method for manufacturing insert-resin-molded product and product produced thereby Download PDFInfo
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- US20010008041A1 US20010008041A1 US09/800,671 US80067101A US2001008041A1 US 20010008041 A1 US20010008041 A1 US 20010008041A1 US 80067101 A US80067101 A US 80067101A US 2001008041 A1 US2001008041 A1 US 2001008041A1
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- Prior art keywords
- resin
- insert
- molded product
- metallic
- cavity
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- 238000000034 method Methods 0.000 title claims abstract description 26
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 22
- 239000011347 resin Substances 0.000 claims abstract description 62
- 229920005989 resin Polymers 0.000 claims abstract description 62
- 238000000465 moulding Methods 0.000 claims abstract description 36
- 239000004020 conductor Substances 0.000 claims description 36
- 230000015572 biosynthetic process Effects 0.000 claims description 4
- 238000005452 bending Methods 0.000 claims description 3
- 238000007796 conventional method Methods 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 1
- 238000005429 filling process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Classifications
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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
- B29C45/14065—Positioning or centering articles in the mould
-
- 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
-
- 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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- 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
-
- 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
- B29C2045/1486—Details, accessories and auxiliary operations
- B29C2045/14991—Submerged burrs, e.g. using protruding mould parts forming a cavity in which the burr on the insert is formed for preventing surface defects
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2705/00—Use of metals, their alloys or their compounds, for preformed parts, e.g. for inserts
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R9/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, e.g. terminal strips or terminal blocks; Terminals or binding posts mounted upon a base or in a case; Bases therefor
- H01R9/03—Connectors arranged to contact a plurality of the conductors of a multiconductor cable, e.g. tapping connections
- H01R9/05—Connectors arranged to contact a plurality of the conductors of a multiconductor cable, e.g. tapping connections for coaxial cables
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/49117—Conductor or circuit manufacturing
- Y10T29/49204—Contact or terminal manufacturing
- Y10T29/49208—Contact or terminal manufacturing by assembling plural parts
- Y10T29/4922—Contact or terminal manufacturing by assembling plural parts with molding of insulation
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/4998—Combined manufacture including applying or shaping of fluent material
Definitions
- the present invention relates to a method for manufacturing an insert-resin-molded product which is molded by means of integrating resin with a metallic member, and a product produced thereby.
- a chip-type connector 1 is formed as an insert-resin-molded product.
- the connector comprises an outer conductor 2 as a first metallic member, an inner conductor 3 as a second metallic member, and resin 4 which is molded by means of integrating resin with the metallic members.
- the outer conductor 2 and the inner conductor 3 are accommodated in a state in which these components remain 20 insulated from each other.
- Molten resin 4 is injected into the cavity 31 of the resin-molding mold 32 after the upper opening 35 of the cavity 31 is enclosed by the upper mold portion.
- the whole device is taken out from the resin-molding mold 32 .
- a chip-type connector 1 is thereby obtained. More specifically, the device obtained is an insert-resin-molded product integrating the outer conductor 2 , the inner conductor 3 and the resin 4 into a unit, as shown in FIG. 4.
- surfaces of the chip-type connector 1 referring to FIG. 4, a description will be provided using a side surface A of the device as an example.
- the end portions S 1 and S 3 and the center portion S 2 of the resin side surface, which are connected to the metallic part 8 a are formed flush with the surface of the metallic part 8 a of the outer conductor 2 .
- the side surface A of the chip-type connector 1 is made flat in conformity with the configuration of the flat inner wall 33 of the cavity 31 , which corresponds to the side surface A, as shown in FIG. 6.
- the resin 4 may flow over the surface of the corner portion of the metallic part 8 a in a manner similar to that described above. Consequently, resin is deposited on the surface of the metallic part 8 a , so that resin burrs 51 (shown in FIG. 4) are generated.
- a method for manufacturing an insert-resin-molded product comprising the steps of: preparing a resin-molding mold having a cavity with an inner wall having a recess therein; preparing a metallic member to be placed in the cavity and to be integrally molded with resin, the metallic member having a metallic part which fits into the recess of the resin-molding mold; placing the metallic member in the cavity of the resin-molding mold and fitting the metallic part of the metallic member into the recess of the resin-molding mold; and, in this state, injecting resin into the cavity of the resin-molding mold to insert-resin-mold integrally with the metallic member.
- FIG. 2( b ) is a cross-section of the device shown in FIG. 2( a ) along line A-A, including an outer conductor accommodated in the resin-molding mold;
- FIG. 3 is a perspective view illustrating a state in which an outer conductor is accommodated in the resin-molding mold shown in FIG. 2;
- FIG. 4 is a perspective view of an insert-resin-molded product formed according to a conventional manufacturing method
- FIG. 5 is a perspective bottom view of the outer conductor used in the insert-resin-molded product shown in FIG. 1 and FIG. 4;
- FIGS. 1 through 3 a detailed description will be given of an exemplary embodiment of the present invention.
- the parts which are the same or similar to the parts previously discussed are denoted by the same numerals, and a detailed description thereof will be omitted.
- a chip-type connector 21 formed as an insert-resin-molded product, which comprises an outer conductor 2 as a first metallic member, an inner conductor 3 as a second metallic member and resin 22 molded integrally with the above-identified metallic members.
- a resin-molding mold 12 which has a cavity 11 capable of accommodating the conductors 2 and 3 therein, is prepared.
- Through-holes 10 a and 10 b of the outer conductor 2 are formed to define substantially U-shaped metallic parts 8 a and 8 b .
- Substantially U-shaped recesses 13 and 14 are disposed on opposing inner walls of the cavity 11 .
- the metallic parts 8 a and 8 b are respectively fit into the recesses 13 and 14 .
- the vertical side surfaces 13 a and 14 a of the recesses 13 and 14 are formed almost perpendicularly to bottom surfaces 13 b and 14 b of the recesses 13 and 14 , and more generally, all of the adjoining surfaces which form the recesses 13 and 14 can be disposed perpendicularly to each other.
- a protrusion 17 is disposed at the center of the cavity 11 , into which an inner periphery of a substantially pipe-shaped cylindrical portion 6 is fit.
- a resin-molding mold 12 shown in FIG. 2 forms a lower mold portion. There is also an upper mold portion, which is not shown here, with a gate for injecting resin. The upper mold portion is placed flat across and encloses the top opening of the cavity 11 .
- the outer conductor 2 , and the inner conductor 3 are accommodated in the cavity 11 of the resin-molding mold 12 in a state in which they remain insulated from each other.
- a molten resin 22 is injected into the cavity 11 of the resin-molding mold 12 after the top opening 18 of the cavity 11 is enclosed by placing the upper mold portion flat across the top opening 18 .
- a chip-type connector 21 shown in FIG. 1 which comprises an insert-resin-molded product made by means of integrating the outer conductor 2 , the inner conductor 3 , and the resin 22 into a unit.
- FIG. 1 a description will be given of the surfaces of the chip-type connector 21 , focusing on the side surface of the FIG. 1 embodiment which corresponds 25 to the previously discussed side surface of the conventional example shown in FIG. 6.
- the surface of the metallic part 8 a of the outer conductor 2 , and S 4 , S 5 and S 6 which are resin surface portions connected to the metallic part 8 a , are not flush with each other. Namely, the metallic part 8 a fitted into the recess 13 which is disposed in the cavity 11 of the resin-molding mold 12 protrudes out, and steps are formed in such a manner that the resin surface portions S 4 , S 5 and S 6 connected to the metallic part 8 a are recessed with respect to the metallic part 8 a.
- FIG. 2( b ) shows a sectional view taken along the line A-A of FIG. 2( a ), with the outer conductor 2 fit into the recesses 13 and 14 of the cavity 11 .
- the resin 22 a changes its direction of flow in the direction of 90° to the direction of the bottom surface 13 b from the direction of the side surface 13 a .
- the method for manufacturing an insert-resin-molded product according to the present invention is not restricted to the embodiment above and can be modified in various ways without departing from the spirit and the scope of the invention.
- the recesses 13 and 14 are arranged respectively on the opposing side surfaces of the cavity as shown in FIG. 2.
- This arrangement permits formation of steps on the resin surface portions connected to the metallic parts 8 a and 8 b with respect to the metallic parts 8 a and 8 b of the outer conductor 2 .
- other options are available.
- an arrangement of a recess in the bottom surface of the cavity 11 may permit formation of a step (not shown) on the resin surface portion S 7 connected to a top surface portion 7 of the outer conductor 2 .
- an arrangement of a recess on the top surface portion of the cavity 11 may allow a step (not shown) to be formed on a resin surface portion S 8 connected to legs 9 a and 9 b of the outer conductor 2 .
- the thickness of the steps between a surface of the metallic part 8 a and the resin surface portions S 4 and S 6 may be larger than that of the metallic part 8 a .
- the thickness of the step between the surface of the metallic part 8 a and the resin surface portion S 5 may be approximately the same as that of the metallic part 8 a .
- a thinner step portion than the thickness of the metallic part 8 a can be used.
- a recess in an inner wall of a cavity of a resin-molding mold is arranged and the metallic part of a metallic member is fitted into the recess.
- This arrangement allows the route of an injected resin to be turned in the middle of the process (e.g., allows the flow of the resin to be changed in the course of the resin-filling process, such as in the manner shown in FIG. 2( b )), so that insert-resin-molding with the metallic member in an integrated manner does not permit the resin to reach the surface of the metallic member. Hence, metallic burrs are not generated.
Abstract
A method for manufacturing an insert-resin-molded product prevents resin burrs from being generated. The method includes the steps of: preparing a resin-molding mold having a cavity having an inner wall including a recess formed therein; preparing a metallic member to be placed in the cavity of the resin-molding mold so as to be integrally molded with resin, the member having a metallic part to be fit into a recess of the resin-molding mold; placing the metallic member in the cavity of the resin-molding mold and fitting the metallic part of the metallic member into the recess of the resin-molding mold; and injecting resin into the cavity of the resin-molding mold to integrally insert-resin-mold with the metallic member.
Description
- This application corresponds to Japanese Patent Application No. 9-255302, filed on Sep. 19, 1997, which is hereby incorporated by reference in its entirety.
- 1. Field of the Invention
- The present invention relates to a method for manufacturing an insert-resin-molded product which is molded by means of integrating resin with a metallic member, and a product produced thereby.
- 2. Description of the Related Art
- A description will be given of a conventional method for manufacturing an insert-resin-molded product, with reference to FIGS. 4 through 6. The described figures and method are not “prior art,” but “related art.”
- As shown in FIG. 4, a chip-type connector1 is formed as an insert-resin-molded product. The connector comprises an
outer conductor 2 as a first metallic member, aninner conductor 3 as a second metallic member, andresin 4 which is molded by means of integrating resin with the metallic members. - First, the
outer conductor 2 and theinner conductor 3 are prepared. The former, as shown in FIG. 5, is formed by a substantially pipe-shapedcylindrical portion 6 at the center thereof, a flange-liketop surface portion 7 formed at one end of the substantially pipe-shapedcylindrical portion 6,metallic parts top surface portion 7 in the direction of the substantially pipe-shapedcylindrical portion 6, andlegs metallic parts metallic parts holes 10 a and 10 b disposed at approximately the respective centers thereof. Themetallic parts holes 10 a and 10 b are made by cutting out two respective portions on thetop surface portion 7. A detailed description will be omitted of theinner conductor 3 shown in FIG. 4, as such a detailed description is unnecessary for the purpose of this disclosure. - Next, as shown in FIG. 6, there is prepared a resin-
molding mold 32, which has acavity 31 capable of accommodating theouter conductor 2 and theinner conductor 3. Thecavity 31 is formed into a rectangular parallelepiped, at the center of which aprotrusion 34 is disposed so as to be fitted into the inner periphery of thecylindrical portion 6 of theouter conductor 2.Inner walls 33 of thecavity 31 are flat, except for the region of theprotrusion 34. The resin-molding mold 32 shown in FIG. 6 forms a lower mold portion. An associated upper mold portion, which is not shown in FIG. 6, is equipped with a gate for injecting resin. The upper mold portion lays flat across and encloses theupper opening 35 of thecavity 31. - Inside the
cavity 31 of the resin-molding mold 32, theouter conductor 2 and theinner conductor 3 are accommodated in a state in which these components remain 20 insulated from each other.Molten resin 4 is injected into thecavity 31 of the resin-molding mold 32 after theupper opening 35 of thecavity 31 is enclosed by the upper mold portion. After theresin 4 injected into thecavity 31 has set, the whole device is taken out from the resin-molding mold 32. A chip-type connector 1 is thereby obtained. More specifically, the device obtained is an insert-resin-molded product integrating theouter conductor 2, theinner conductor 3 and theresin 4 into a unit, as shown in FIG. 4. - As for surfaces of the chip-type connector1, referring to FIG. 4, a description will be provided using a side surface A of the device as an example. The end portions S1 and S3 and the center portion S2 of the resin side surface, which are connected to the
metallic part 8 a, are formed flush with the surface of themetallic part 8 a of theouter conductor 2. The side surface A of the chip-type connector 1 is made flat in conformity with the configuration of the flatinner wall 33 of thecavity 31, which corresponds to the side surface A, as shown in FIG. 6. - In the above method for manufacturing the chip type connector1, however, when the mold is filled to excess with the
molten resin 4, theresin 4 may flow over the surface of themetallic part 8 a, which is flush with the resin surfaces S1, S2 and S3. As a result, the resin may be deposited on the surface of themetallic part 8 a, resulting in the formation of “resin burrs” 5. - Additionally, when a configuration of the corner portion R1 of the bent
metallic part 8 a (shown in FIG. 5) differs from a configuration of the corresponding corner portion R2 of the cavity 31 (shown in FIG. 6), theresin 4 may flow over the surface of the corner portion of themetallic part 8 a in a manner similar to that described above. Consequently, resin is deposited on the surface of themetallic part 8 a, so that resin burrs 51 (shown in FIG. 4) are generated. - The present invention has been made with a view toward solving at least the above-noted problems. Accordingly, it is an object of the present invention to provide a method for manufacturing an insert-resin-molded product, in which the generation of resin burrs on the surface of a metallic member caused by insert-resin-molding is prevented.
- To this end, in accordance with the present invention, there is provided a method for manufacturing an insert-resin-molded product comprising the steps of: preparing a resin-molding mold having a cavity with an inner wall having a recess therein; preparing a metallic member to be placed in the cavity and to be integrally molded with resin, the metallic member having a metallic part which fits into the recess of the resin-molding mold; placing the metallic member in the cavity of the resin-molding mold and fitting the metallic part of the metallic member into the recess of the resin-molding mold; and, in this state, injecting resin into the cavity of the resin-molding mold to insert-resin-mold integrally with the metallic member.
- Preferably, the recess of the resin-molding mold is formed in such a manner that the side surface of the recess is substantially perpendicular to the bottom surface of the same. This allows the flow of the molten resin to be substantially perpendicular to the side surface of the metallic member, so that the resin does not flow in the direction of the side surface of the metallic member, thereby, preventing resin burrs from being generated.
- The foregoing, and other, objects, features and advantages of the present invention will be more readily understood upon reading the following detailed description in conjunction with the drawings in which:
- FIG. 1 is a perspective view of an exemplary insert-resin-molded product manufactured by a method according to an exemplary embodiment of the present invention;
- FIG. 2(a) is a perspective view of a lower mold portion of a resin-molding mold employed in the method for manufacturing the insert-resin-molded product according to the above-mentioned embodiment of the present invention;
- FIG. 2(b) is a cross-section of the device shown in FIG. 2(a) along line A-A, including an outer conductor accommodated in the resin-molding mold;
- FIG. 3 is a perspective view illustrating a state in which an outer conductor is accommodated in the resin-molding mold shown in FIG. 2;
- FIG. 4 is a perspective view of an insert-resin-molded product formed according to a conventional manufacturing method;
- FIG. 5 is a perspective bottom view of the outer conductor used in the insert-resin-molded product shown in FIG. 1 and FIG. 4; and
- FIG. 6 is a perspective view of a lower mold portion of a resin-molding mold used in the conventional method for manufacturing an insert-resin-molded product.
- Referring to FIGS. 1 through 3, a detailed description will be given of an exemplary embodiment of the present invention. The parts which are the same or similar to the parts previously discussed are denoted by the same numerals, and a detailed description thereof will be omitted.
- As shown in FIG. 1, there is provided a chip-
type connector 21 formed as an insert-resin-molded product, which comprises anouter conductor 2 as a first metallic member, aninner conductor 3 as a second metallic member and resin 22 molded integrally with the above-identified metallic members. - First, the
outer conductor 2 and theinner conductor 3, which are metallic members, are prepared. - Next, as shown in FIG. 2 (which includes FIGS.2(a) and 2(b)), a resin-
molding mold 12, which has acavity 11 capable of accommodating theconductors holes 10 a and 10 b of theouter conductor 2 are formed to define substantially U-shapedmetallic parts U-shaped recesses cavity 11. Themetallic parts recesses vertical side surfaces recesses bottom surfaces recesses recesses protrusion 17 is disposed at the center of thecavity 11, into which an inner periphery of a substantially pipe-shapedcylindrical portion 6 is fit. A resin-molding mold 12 shown in FIG. 2 forms a lower mold portion. There is also an upper mold portion, which is not shown here, with a gate for injecting resin. The upper mold portion is placed flat across and encloses the top opening of thecavity 11. - As shown in FIG. 3, the
outer conductor 2, and the inner conductor 3 (not shown) are accommodated in thecavity 11 of the resin-molding mold 12 in a state in which they remain insulated from each other. Amolten resin 22 is injected into thecavity 11 of the resin-molding mold 12 after thetop opening 18 of thecavity 11 is enclosed by placing the upper mold portion flat across thetop opening 18. - Then, the whole device is removed from the resin-
molding mold 12 after theresin 22 which has been injected into thecavity 11 has set. A chip-type connector 21 shown in FIG. 1 is thereby obtained, which comprises an insert-resin-molded product made by means of integrating theouter conductor 2, theinner conductor 3, and theresin 22 into a unit. - Referring to FIG. 1, a description will be given of the surfaces of the chip-
type connector 21, focusing on the side surface of the FIG. 1 embodiment which corresponds 25 to the previously discussed side surface of the conventional example shown in FIG. 6. - The surface of the
metallic part 8 a of theouter conductor 2, and S4, S5 and S6 which are resin surface portions connected to themetallic part 8 a, are not flush with each other. Namely, themetallic part 8 a fitted into therecess 13 which is disposed in thecavity 11 of the resin-molding mold 12 protrudes out, and steps are formed in such a manner that the resin surface portions S4, S5 and S6 connected to themetallic part 8 a are recessed with respect to themetallic part 8 a. - When an insert-resin-molded product is manufactured, the filling of the
cavity 11 with an excessive amount ofresin 22 causes theresin 22 to be connected to anend surface 8 a 1 of themetallic part 8 a. Then,resin 22 a flush with theend surface 8 a 1 flows in the direction of theend surface 8 a 1. That is, theresin 22 a flows in the direction of aside surface 13 a of therecess 13 of thecavity 11. - Further filling of the cavity with an excessive amount of resin allows the
resin 22 a to flow in a direction along the surface of themetallic part 8 a. Thus, this causes theresin 22 a to flow in the direction of abottom surface 13 b of therecess 13 from theside surface 13 a of therecess 13 of thecavity 11. - One exemplary flow pattern of the resin may be understood with reference to FIG. 2(b), which shows a sectional view taken along the line A-A of FIG. 2(a), with the
outer conductor 2 fit into therecesses cavity 11. As indicated there, since theside surface 13 a of therecess 13 is substantially perpendicular to thebottom surface 13 b of therecess 13, theresin 22 a changes its direction of flow in the direction of 90° to the direction of thebottom surface 13 b from the direction of theside surface 13 a. That is, the resin flows in the direction of the arrow “R,” but does not readily flow in the direction of arrow “S.” This is partly due to the fact that themetallic parts 8 a are snugly accommodated in therecesses metallic parts 8 a are separated and essentially “sealed off” from the normal flow of resin, making it unlikely that the resin can flow over the surfaces of themetallic parts 8 a. As a result, resin burrs are not generated. - Also, even if a configuration R1 (shown in FIG. 1) of the corner portion of the bent
metallic part 8 a is not equivalent to a configuration R2 (shown in FIG. 2) of the corner portion of acavity 11,resin 22 does not flow over the surface of the corner portion of themetallic part 8 a. As a result, no resin burrs are generated, unlike the case the described above. - The method for manufacturing an insert-resin-molded product according to the present invention is not restricted to the embodiment above and can be modified in various ways without departing from the spirit and the scope of the invention. For instance, in the above embodiment, the
recesses metallic parts metallic parts outer conductor 2. However, other options are available. For example, an arrangement of a recess in the bottom surface of thecavity 11 may permit formation of a step (not shown) on the resin surface portion S7 connected to atop surface portion 7 of theouter conductor 2. Similarly, an arrangement of a recess on the top surface portion of thecavity 11 may allow a step (not shown) to be formed on a resin surface portion S8 connected tolegs outer conductor 2. - As shown in FIG. 1, the thickness of the steps between a surface of the
metallic part 8 a and the resin surface portions S4 and S6 may be larger than that of themetallic part 8 a. The thickness of the step between the surface of themetallic part 8 a and the resin surface portion S5 may be approximately the same as that of themetallic part 8 a. However, this should not be construed restrictively. A thinner step portion than the thickness of themetallic part 8 a can be used. - The description of the method for manufacturing an insert-resin-molded product in the embodiment above employs a chip-
type connector 21, but the method is applicable to other various kinds of insert-resin-molded products. - As described above, in the method for manufacturing an insert-resin-molded product according to the present invention, a recess in an inner wall of a cavity of a resin-molding mold is arranged and the metallic part of a metallic member is fitted into the recess. This arrangement allows the route of an injected resin to be turned in the middle of the process (e.g., allows the flow of the resin to be changed in the course of the resin-filling process, such as in the manner shown in FIG. 2(b)), so that insert-resin-molding with the metallic member in an integrated manner does not permit the resin to reach the surface of the metallic member. Hence, metallic burrs are not generated.
- Furthermore, metallic burrs are not generated on the surface of the metallic member, since the route of the injected resin turns in a direction substantially at a right angle in the middle of the process for reaching the surface of the metallic part.
- The above-described exemplary embodiments are intended to be illustrative in all respects, rather than restrictive, of the present invention. Thus the present invention is capable of many variations in detailed implementation that can be derived from the description contained herein by a person skilled in the art. All such variations and modifications are considered to be within the scope and spirit of the present invention as defined by the following claims.
Claims (16)
1. A method for manufacturing an insert-resin-molded product, comprising the steps of:
preparing a resin-molding mold having a cavity, said cavity having a first inner wall in which a first recess is formed;
preparing a metallic member for placement in the cavity of the resin-molding mold so as to be integrally insert-resin-molded, the metallic member having a first metallic part to be fitted into the first recess of the resin-molding mold;
placing the metallic member in the cavity and fitting the first metallic part of the metallic member into the first recess of the resin-molding mold; and
injecting resin into the cavity of the resin-molding mold to integrally insert-resin-mold with the metallic member.
2. A method for manufacturing an insert-resin-molded product according to , wherein a side surface of the first recess of the resin-molding mold is formed substantially perpendicular to a bottom surface of the first recess.
claim 1
3. A method for manufacturing an insert-resin-molded product according to , wherein said first metallic part fits into said first recess such that an outer surface of said first metallic part is sealed off from the flow of resin within said cavity, thereby preventing the formation of resin burrs on said outer surface of said first metallic part.
claim 2
4. A method for manufacturing an insert-resin-molded product according to , wherein the first recess has a substantially U-shape.
claim 1
5. A method for manufacturing an insert-resin-molded product according to , wherein a protrusion is disposed at the center of the cavity, into which an inner periphery of a substantially pipe-shaped cylindrical portion of the metallic member is fitted.
claim 1
6. A method for manufacturing an insert-resin-molded product according to , further including a second recess, wherein the first and second recesses are arranged respectively on opposing inner walls of the cavity.
claim 1
7. A method for manufacturing an insert-resin-molded product according to , wherein the metallic member is formed by a substantially pipe-shaped cylindrical portion at the center thereof, and a flange-like top surface portion formed at one end of the substantially pipe-shaped cylindrical portion.
claim 1
8. A method for manufacturing an insert-resin-molded product according to , wherein said first metallic part is formed by bending an end portion of the top surface portion in the direction of the substantially pipe-shaped cylindrical portion.
claim 7
9. A method for manufacturing an insert-resin-molded product according to , wherein said first metallic part has a through-hole disposed at approximately the center thereof.
claim 8
10. An insert-resin-molded product produced according to the method of .
claim 1
11. An insert-resin-molded product, comprising:
an inner conductor;
an outer conductor having first and second metallic parts;
a resin for integrating said inner conductor and outer conductor;
said product having a first side face on which said first metallic part is overlaid, wherein said resin forms a surface on said first side face adjacent to said first metallic part, said resin surface being recessed from a surface of said first metallic part.
12. An insert-resin-molded product of , wherein said first metallic part has a U-shape.
claim 11
13. An insert-resin-molded product of , further comprising a second metallic part disposed on a second side face of said product which is oppositely disposed from said first side face.
claim 11
14. An insert-resin-molded product of , wherein the outer conductor is formed by a substantially pipe-shaped cylindrical portion at the center thereof, and a flange-like top surface portion formed at one end of the substantially pipe-shaped cylindrical portion.
claim 11
15. An insert-resin-molded product of , wherein said first metallic part is formed by bending an end portion of the top surface portion in the direction of the substantially pipe-shaped cylindrical portion.
claim 14
16. An insert-resin-molded product of , wherein said first metallic part has a through-hole disposed at approximately the center thereof.
claim 15
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/800,671 US20010008041A1 (en) | 1997-09-19 | 2001-03-08 | Method for manufacturing insert-resin-molded product and product produced thereby |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP25530297A JP3269436B2 (en) | 1997-09-19 | 1997-09-19 | Manufacturing method of insert resin molded product |
JP9-255302 | 1997-09-19 | ||
US09/156,629 US6212755B1 (en) | 1997-09-19 | 1998-09-18 | Method for manufacturing insert-resin-molded product |
US09/800,671 US20010008041A1 (en) | 1997-09-19 | 2001-03-08 | Method for manufacturing insert-resin-molded product and product produced thereby |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09/156,629 Division US6212755B1 (en) | 1997-09-19 | 1998-09-18 | Method for manufacturing insert-resin-molded product |
Publications (1)
Publication Number | Publication Date |
---|---|
US20010008041A1 true US20010008041A1 (en) | 2001-07-19 |
Family
ID=17276896
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09/156,629 Expired - Lifetime US6212755B1 (en) | 1997-09-19 | 1998-09-18 | Method for manufacturing insert-resin-molded product |
US09/800,671 Abandoned US20010008041A1 (en) | 1997-09-19 | 2001-03-08 | Method for manufacturing insert-resin-molded product and product produced thereby |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09/156,629 Expired - Lifetime US6212755B1 (en) | 1997-09-19 | 1998-09-18 | Method for manufacturing insert-resin-molded product |
Country Status (5)
Country | Link |
---|---|
US (2) | US6212755B1 (en) |
EP (1) | EP0904920A3 (en) |
JP (1) | JP3269436B2 (en) |
KR (1) | KR100289827B1 (en) |
CN (1) | CN1137020C (en) |
Cited By (1)
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US20110158764A1 (en) * | 2008-05-29 | 2011-06-30 | Toyota Jidosha Kabushiki Kaisha | Method for manufacturing frp member with insert and frp member with insert |
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-
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- 1998-09-18 KR KR1019980038698A patent/KR100289827B1/en not_active IP Right Cessation
- 1998-09-18 US US09/156,629 patent/US6212755B1/en not_active Expired - Lifetime
- 1998-09-18 CN CNB98119530XA patent/CN1137020C/en not_active Expired - Lifetime
-
2001
- 2001-03-08 US US09/800,671 patent/US20010008041A1/en not_active Abandoned
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20110158764A1 (en) * | 2008-05-29 | 2011-06-30 | Toyota Jidosha Kabushiki Kaisha | Method for manufacturing frp member with insert and frp member with insert |
US8491399B2 (en) * | 2008-05-29 | 2013-07-23 | Toyota Jidosha Kabushiki Kaisha | Method for manufacturing FRP member with insert and FRP member with insert |
Also Published As
Publication number | Publication date |
---|---|
JP3269436B2 (en) | 2002-03-25 |
EP0904920A2 (en) | 1999-03-31 |
US6212755B1 (en) | 2001-04-10 |
JPH1190957A (en) | 1999-04-06 |
KR19990029935A (en) | 1999-04-26 |
KR100289827B1 (en) | 2001-05-15 |
CN1137020C (en) | 2004-02-04 |
CN1212202A (en) | 1999-03-31 |
EP0904920A3 (en) | 2000-01-19 |
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