GB2213091A - Insert molded terminal plate and molding method - Google Patents
Insert molded terminal plate and molding method Download PDFInfo
- Publication number
- GB2213091A GB2213091A GB8828051A GB8828051A GB2213091A GB 2213091 A GB2213091 A GB 2213091A GB 8828051 A GB8828051 A GB 8828051A GB 8828051 A GB8828051 A GB 8828051A GB 2213091 A GB2213091 A GB 2213091A
- Authority
- GB
- United Kingdom
- Prior art keywords
- terminal plate
- guide projection
- die
- plate guide
- plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
- B29C45/14639—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
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Manufacturing Of Electrical Connectors (AREA)
- Connector Housings Or Holding Contact Members (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Description
t. j 1 n r #, - 1 -) 1 2 I6U9 1 INSERTION MOLDED CONNECTOR TERMINAL PLATE
AND ITS MOLDING METHOD
BACKGROUND OF THEtINVENTION
Field of the Invention
The present invention relates to an insertion molded connector terminal plate and its molding method, and more specifically to an insertion molded terminal plate suitable for use in an automatic mass production process line.
Description of the Prior Art
Fig. 1 shows a fuel meter provided for a fuel tank for an automotive vehicler to which an insertion molded float arm FA indicates the fuel level corresponding to the position of the float FL. Further, in Fig. 1A, TH denotes a thermistor.
An electric or electronic elements as described above is usually connected to outer elements through a plurality of connector terminal plates 101 formed integral with a resin base 111 for providing electric operation in cooperation with outer devices. To manufacture these connector terminal plates, terminal plates are first set at appropriate positions on a lower molding die, and then an upper molding die is engaged with the lower molding die, before injecti6n molding the resin base 111 integral with the terminal plates 101.
Figs. 2A and 2B show an example of methods of insertion molding connector terminal plates. in this method, a terminal plate 101 is first fitted to a lower terminal plate guide groove 105 formed in a lower die 103 and an upper die 107 is engaged with the lower die 103 by fitting an angled end 101a of the terminal plate 101 to an angled end fittig portion 109a formed in the upper die 5 107. Thereafter, resin is injected into a resin base molding cavity 118 formed between the lower and upper dies 103 and 107 to form a resin base 111.
To facilitate fitting the terminal Plate 101 to the lower and upper guide grooves 105 and 109, the lower plate guide groove 105 is chamfered to form two chamf er surf aces 119 and the upper plate guide groove 107 is chamfered to form two chamfer surfaces 120 both along the two opposing edges of the groove 105 or 109. Further, the lower plate guide groove 105 is formed with non-chamfered portion 121 ---15--to prevent -liquefied resin from flowing into the chamfered groove 105 and the dpper guide groove 109 is formed with non-chamfered portion 123 also to prevent liquefied resin' from flowing into the chamfered groove 109.
Therefore, when the terminal plate 101 is fitted to the lower terminal plate guide groove 105, an angled end 101a of the terminal plate 101 is first inserted into an end of the chamfered guide groove 105; the vertical outer side surface of the angled end 101a of the terminal plate 101 is brought into contact with the side wall of the guide groove 105; and then the entire terminal plate 101 is completely fitted to the lower terminal plate guide groove 105. Therefore, there exists a problem in that it is impossible to easily and quickly set the terminal plate 101 into the lower terminal plate guide groove 105 of the lower die 103.
Further. when the upper die 107 is engaged with the lower die 103, the terminal plate 101 is f itted to the upper terminal plate guide groove 109 under the normal conditions. However. since the upper guide groove 109 is also formed with the non-chamfered portion 123, when the IS terminal plate 101 is perfectly straight or flat, there exists a problem in that the terminal plate 101 is not smoothly -inserted into the upper terminal plate guide groove 109 when he two upper and lower dies 103 and 107 are engaged with each other before injection molding process.
The above-mentioned problems are serious in particular when a number of terminal plates 101 are insertion molded simultaneously integral with a resin base by an automatic injection molding machine arranged along an automatic mass production assembly process line.
SUMMARY OF THE INVENTION is With these problems in mind, therefore, it is the primary object of the present invention to provide an insertion molded connector terminal plate which can be inserted into a molding die more easily and more reliably in an automatic assembly line and its method of insertion molding the same.
To achieve the above-mentioned object, a terminal plate insertion molded, integral with a resin base, according to the present invention, is characterized in that the terminal plate is formed with at least one plate guide projection to be first inserted into at least one plate guide projection fitting hollow cavity formed in an insertion molding die, for providing an easy and reliable location of the terminal plate to the die.
The at least one plate guide projection is a lower or upper plate guide pr03ection formed at the middle of the terminal plate so as to be inserted into a lower or upper plate guide projection fitting hollow cavity formed in the lower or upper die.
Further, the method of insertion molding a terminal plate integral with a resin base by a pair of lower and 0 upper dies according to the present invention comprises the steps of: (a) preparing a terminal plate f ormed with at least one lower plate guide projection; (b) preparing a lower die formed with a terminal plate guide groove, a lower plate guide projection fitting hollow cavity, and a resin base molding cavity and an upper die formed with a terminal plate guide groove and a resin base molding cavity; (c) fitting the terminal plate to the terminal plate guide groove of the lower die by first inserting the lower plate guide projection into the lower plate guide projection fitting hollow cavity; (d) engaging the upper die with the lower die by fitting the terminal plate to the terminal plate guide groove of the upper die; and (e) injecting a liquefied resin into the resin base molding cavity formed between the two upper and lower dies to insertion mold the terminal plate integral with the resin base.
In the insertion molding method of the: present invention, since the plate guide projection is first inserted into the plate guide projection fitting hollow cavity, it is possible to easily and reliably set a long terminal plate to a long and narrow groove formed in an insertion injection molding die.
BRIEF DESCRIPTION OF THE DRAWINGS
The features and advantages of the insertion molde connector terminal plate and its molding method according to the present invention over the prior-art method will be more clearly appreciated from the following description taken in conjunction with the accompanying drawings in which:
Fig. 1 is a perspective view showing a fuel meter, by way of example, to which an insertion molded connector terminal plates formed integral with a resin base according to the present invention are applied; 4 - a --Fig. 2A is % an exploded view for assistance in explaining a prior-art method of insertion molding a terminal plate; Fig. 2B is a partial cross-sectional view for assistance in explaining the engagement relationship between two lower and upper dies with a terminal plate intervening between the two dies; Fig. 2C is a perspective partially broken view showing a plurality of terminal plates insertion molded integral with a resin base; Fig. 3 is an exploded view, similar to Fig. 2A, for assistance in explaining a method of insertion molding a terminal plate according to the present invention; Fig. 4 is a partial cross-sectional view for assistance in explaining the engagement relationship between the lower die and a terminal plate; and Fig. 4B is a partial cross-sectional view for assistance in explaining the engagement relationship between two upper and lower dies with a terminal plate intervening between the two dies.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
With reference to Fig. 3, the feature of the insertion 25 molded connector terminal plate according to the present invention is to form at least one plate guide projection 25L or 25U at roughly the middle of a long terminal plate 1 so as to extend from both the side surface5of the terminal plate 1.
In Fig. 3, a connector terminal plate 1 is formed with an angled end portion la, a straight portion 1b, a lower plate guide projection 25L and an upper plate guide projection 25U. This terminal plate 1 is punched out from - -a material with a press machine, for instance. The connector terminal plate 1 is insertion molded integral 6 with a resin base 11 with a pair of lower and upper dies 3 and 7.
In the same way as shown in Fig. 2A, the lower die 3 is formed with a lower terminal plate guide groove 5 chamfered so as to provide two opposing chamfer surfaces 19, a non- chamfered portion 21, a resin base molding cavity 18, and in particular a lower plate guide projection fitting hollow cavity 27L at roughly the middle portion of the guide groove 5.
Further, the upper die 7 is formed with an upper terminal Plate guide groove 9 chamfered so as to provide two opposing chamfer surfaces -20 and including an angled end fitting portion 9a, a non-chamfered portion 23, a resin base molding cavity 18, and in particular an upper plate guide projection fitting hollow cavity 27U at roughly the middle portion of the guide groove 9.
In the above two upper and lower dies 3 and 7, the two terminal Plate guide grooves 5 and 9 serve to accurately locate the terminal plate 1 (to be insertion molded integral with a resin base 11) between the two lower and upper dies 3 and 7. The two chamfer surf aces 19 and 20 formed along two opposing edges of each of the lower and upper guide grooves 5 and 9 serve to allow the terminal plate 1 to be more easily inserted into the guide grooves before injection molding. The two non-chamfered portions 21 and 23 serve to prevent liquefied resin from flowing. from the resin base molding cavity 18 into the guide grooves 5 and 9.
Further, in this embodiment, the two plate guide projection fitting hollow cavities 27L and 27U serve to facilitate reliable insertion of the terminal plate 1 into the terminal plate guide grooves 5 and 9 formed in the lower and upper dies 3 and 7 before injecting resin into the die.
4 1 To insertion molding a terminal plate 1, the terminal plate 1 is first fitted to the lower plate guide groove 5. In this case, lower guide projection 25L is first inserted into the lower guide projection f itting hollow cavity 27L 5 as depicted in Fig. 4A. When the lower guide projection 25L is a little fitted to the lower guide projection fitting hollow cavity 27L, since the entire terminal plate 1 automatically drops into the lower plate guide groove 5 - under guidance of the chamfered surfaces 19 formed along both the opposing edges of the terminal plate guide groove 5, as depicted in Fig. 4B, it is possible to smoothly -insert the straight portion lb of the terminal plate 1 into the non-chamfered portion 21 of the lower die 3, that is, to set the terminal plate 1 into the lower plate guide groove 5. The presence of the lower plate guide projection 25L apd the lower guide projection fitting hollow cavity 27L are effective in particular when a plurality of terminal plates 1 are simultaneously set to the lower die 3 by a robot machine, for instance.
Thereafter. the upper die 7 is engaged with the lower die 3 by f itting the angled end la and the upper guide projection 2SU of the terminal plate 1 to the angled end fitting portion 9a and the upper guide projection fitting hollow cavity 27U of the upper die 7 under guidance of the chamfer surfaces 20 formed along both the two opposing edges of the upper terminal plate guide groove Therefore.. it is possible to smoothly insert the straight portion lb of the terminal plate 1 into the non-chamfered groove 23 of the upper die 7, that is, to engage the upper die 7 with the lower'die 3.
After the two upper and lower dies 3 and 7 are perfect ly engaged with each other, a liquefied resin is injected into the resin base molding cavity 18 to insertion mold the terminal plate 1 integral with the resin base 11.
The molded resin base 11 is hardened at room or high temperature.
7 0 9.
4 In the above embodiment, it is possible to obtain almost the same ef f ect by providing only the lower plate guide projection 25L, because once the terminal plate 1 is securely f itted to the lower plate guide groove 5, it is relatively easy to securely engage the upper die 7 with the lower die 3, because the terminal plate 1 is kept straight along the guide groove 5.
Further, it is not necessarily to form the chamfer surf aces 19 or 20 along the entire length of the guide groove 5 or 9 excepting the position at which the plate guide projection 25L or 25U is inserted. Furthermore, it is also possible- -to -bevel the extreme end surface of the plate guide projection 25L or 25U in the thickness direction, instead of forming the chamfered surfaces 19 and 20, in order to facilitate insertion of the plate guide projection 25L or 25U into the plate guide projection fitting hollow portion 27L or 27U. Further, it is also preferable to form the plate guide projection 2.L'or 25U in triangular shape when the flat surface of the terminal plate 1 is seen from the side.
As described above, in the insertion molded connector terminal plate and its molding method according to the present invention, since the terminal plate 1 is formed at least one terminal plate guide projection 25L or 25U and since this terminal plate guide projection is first inserted into the guide projection fitting hollow cavity 27L or 27U to securely set the terminal plate 1 between the upper and lower dies, it is possible to markedly improve the productivity of insertion molding of connector terminal plates integral with the resin base, in particular when a plurality of connector terminal plates are simultaneously insertion molded in an automatic manufacturing process.
- 8 1 1 0
Claims (8)
1. A terminal plate insertion molded integral with a resin base, wherein said terminal plate is formed with at least one plate guide projection to be first inserted into at least one plate guide projection fitting hollow cavity formed in an insertion molding die, for providing an easy and reliable location of the terminal plate to the die.
2. The terminal plate of claim 1, wherein said at least one plate guide projection is a lower plate guide projection formed at roughly a middle portion of the terminal plate to be inserted into a lower plate guide projection fitting hollow cavity formed in a lower insertion molding die, for providing an easy and reliable location of the tegminal plate to the lower die.
3. The terminal plate of claim 2, wherein said terminal plate is further formed with an upper plate guide projection formed at roughly a middle portion of the terminal plate to be inserted into an upper plate guide projection fitting hollow cavity formed in an upper insertion molding die, for providing an easy and reliable location of the terminal plate to the upper die.
4. A method of insertion molding a terminal plate integral with a resin base by a pair of lower and upper dies, comprising the steps of: ' (a) preparing a terminal plate formed with at least 30 one lower plate guidd projection; (b) preparing a lower die formed with a terminal plate guide groove, a lower plate guide projection fitting hollow cavity, and a resin base molding cavity and an upper die formed with a terminal plate guide groove and a resin 35 base molding cavity; (c) f itting the terminal plate to the terminal plate guide groove of the lower die by first inserting the lower plate guide projection into the lower plate guide projection fitting hollow cavity; (d) engaging the upper die with the lower die by fitting the terminal plate to the terminal plate guide groove of the upper die; and (e) injecting - a liquid resin into the resin base molding cavity formed between the two upper and lower dies to insertion mold the terminal plate integral with the resin base.
a z
5. A terminal plate moldable with a resin base, wherein the terminal plate comprises at least one plate guide projection, which at least one plate guide projection is insertable into a corresponding cavity in an insertion molding die.
6. A terminal plate substantially as hereinbefore described with reference to, and as shown in, Figures 3, 4(A),, and 4 (B) of the accompanying drawings.
7. A method of insertion molding a terminal plate integral with a resin base substantially as hereinbefore described with reference to, and as shown in, Figures 3, 4(A) and 4(B) of the accompanying drawings.
8. Any novel feature or combination of features described herein.
Published 1989 at The Patent OMce, State House, 66171 High Holbom. London WCIR 4TP. Aer eopies maybe obtained from The patent Offtee. Sales Braneb, St Mary Cray, Orpington, Kent BR5 -3RD- Printed by Multiplex techiuques ltd, St Mazy Cray, Kent, Con, 1/87
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30309087A JPH01163985A (en) | 1987-12-02 | 1987-12-02 | Manufacture of insertion terminal and terminal block |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB8828051D0 GB8828051D0 (en) | 1989-01-05 |
| GB2213091A true GB2213091A (en) | 1989-08-09 |
| GB2213091B GB2213091B (en) | 1991-08-14 |
Family
ID=17916771
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8828051A Expired - Fee Related GB2213091B (en) | 1987-12-02 | 1988-12-01 | Insertion molded connector terminal plate and its molding method |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPH01163985A (en) |
| DE (1) | DE3840713A1 (en) |
| GB (1) | GB2213091B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2280143A (en) * | 1993-07-13 | 1995-01-25 | Sumitomo Wall Systems Ltd | Insert terminal, method and apparatus for moulding same |
| EP0664204A2 (en) * | 1994-01-19 | 1995-07-26 | VERWALTUNGSGESELLSCHAFT GEIGER TECHNIK GmbH & Co. KG | Element, preferably metallic, particularly buried in a plastic article |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2541653Y2 (en) * | 1993-05-21 | 1997-07-16 | 日本航空電子工業株式会社 | connector |
| GB2307661B (en) * | 1995-11-30 | 1998-04-29 | Honda Lock Mfg Co Ltd | Electromagnetic sensor and moulding die used for manufacturing the same |
| DE19649549C1 (en) * | 1996-11-29 | 1998-04-09 | Bosch Gmbh Robert | Arrangement esp. for use in electronic controller of motor vehicle for connection to external pluggable connector |
| JP3701464B2 (en) * | 1997-05-08 | 2005-09-28 | 矢崎総業株式会社 | Molded product |
| DE19719436C2 (en) * | 1997-05-13 | 1999-06-17 | Walter Soehner Gmbh & Co | Injection molded housing |
| DE19921540A1 (en) * | 1999-05-11 | 2000-11-16 | Mannesmann Vdo Ag | Procedure for protecting cable strands |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB608029A (en) * | 1944-03-20 | 1948-09-08 | Tinnerman Products Inc | Method of moulding an insert into an article |
| GB855908A (en) * | 1956-05-31 | 1960-12-07 | ||
| GB1135793A (en) * | 1965-04-27 | 1968-12-04 | Plessey Co Ltd | Improvements in or relating to insulator bodies for electrical connectors |
| GB1208506A (en) * | 1967-07-14 | 1970-10-14 | Borg Warner | Method of and apparatus for molding plastics articles |
-
1987
- 1987-12-02 JP JP30309087A patent/JPH01163985A/en active Granted
-
1988
- 1988-12-01 GB GB8828051A patent/GB2213091B/en not_active Expired - Fee Related
- 1988-12-02 DE DE19883840713 patent/DE3840713A1/en active Granted
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB608029A (en) * | 1944-03-20 | 1948-09-08 | Tinnerman Products Inc | Method of moulding an insert into an article |
| GB855908A (en) * | 1956-05-31 | 1960-12-07 | ||
| GB1135793A (en) * | 1965-04-27 | 1968-12-04 | Plessey Co Ltd | Improvements in or relating to insulator bodies for electrical connectors |
| GB1208506A (en) * | 1967-07-14 | 1970-10-14 | Borg Warner | Method of and apparatus for molding plastics articles |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2280143A (en) * | 1993-07-13 | 1995-01-25 | Sumitomo Wall Systems Ltd | Insert terminal, method and apparatus for moulding same |
| US5604979A (en) * | 1993-07-13 | 1997-02-25 | Sumitomo Wiring Systems, Ltd. | Molding apparatus for molding and insert terminal and method for molding same |
| US5655929A (en) * | 1993-07-13 | 1997-08-12 | Sumitomo Wiring Systems, Ltd. | Insert terminal, molding apparatus for molding same and method for molding same |
| GB2280143B (en) * | 1993-07-13 | 1997-12-03 | Sumitomo Wiring Systems | Insert terminal,molding apparatus for molding same and method for molding same |
| EP0664204A2 (en) * | 1994-01-19 | 1995-07-26 | VERWALTUNGSGESELLSCHAFT GEIGER TECHNIK GmbH & Co. KG | Element, preferably metallic, particularly buried in a plastic article |
| EP0664204A3 (en) * | 1994-01-19 | 1995-11-08 | Geiger Plastic Verwaltung | Element, preferably metallic, particularly buried in a plastic article. |
Also Published As
| Publication number | Publication date |
|---|---|
| GB8828051D0 (en) | 1989-01-05 |
| DE3840713A1 (en) | 1989-07-27 |
| JPH0460309B2 (en) | 1992-09-25 |
| GB2213091B (en) | 1991-08-14 |
| DE3840713C2 (en) | 1990-03-29 |
| JPH01163985A (en) | 1989-06-28 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 20051201 |