CA1078941A - Electrical connector housing made from two thermoplastic materials - Google Patents
Electrical connector housing made from two thermoplastic materialsInfo
- Publication number
- CA1078941A CA1078941A CA287,672A CA287672A CA1078941A CA 1078941 A CA1078941 A CA 1078941A CA 287672 A CA287672 A CA 287672A CA 1078941 A CA1078941 A CA 1078941A
- Authority
- CA
- Canada
- Prior art keywords
- housing
- terminal
- conductor
- crimping
- connector
- 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.)
- Expired
Links
Landscapes
- Connector Housings Or Holding Contact Members (AREA)
Abstract
Abstract of the Disclosure An electrical connector housing has a first portion which surrounds a contact portion of the connector or terminal, a second portion which surrounds the ferrule portion of the terminal and a third portion which is intended to grip the insulation of an insulated wire when the ferrule is crimped to the core of the wire. The first and second portions of the housing are made of a first plastics material such as a filled nylon material which is relatively rigid but which can withstand the compressive forces to be applied to the second portion when the terminal and core are crimped together in the housing. The third portion is made of a different plastics material such as aromatic nylon which will not relax, as will the first material, after crimping of the third portion about the insulation of the wire.
Description
~ la7ss~l This invention relates to an electrical connector housing.
Many electrical connectors are known which comprise a housing of electrically insulating material containing an electrical terminal.
The terminal of such a connector can be connected to the conduc-tive core of an insulated electrical conductor by crimping, with the housing being applied to the terminal either before or after such crimping is carried out.
In the case where the housing is applied to the terminal prior to crimping of the terminal onto a conductor, the housing can extend not only over the portion of the terminal to be crimped to the core of the conductor, but beyond such portion to extend over the insulation of the conductor for crimping onto the insulation to provide strain relief for the connection between the terminal and the conductor, and also to seal this connection.
Such connectors are advantageous since the terminals thereof are fully insulated prior to connection to a conductor, and this application of a complete connector to a conductor can be effected with a single crimping operation at which the terminal is crimped onto the core of the conductor and a portion of the housing is crimped onto the insulation of the conductor.
However, known housings for such connectors suffer from the dis-advantage that they do not meet the two requirements of providing a strong relatively rigid portion to contain the contact portion of a terminal while also providing a portion having the properties necessary for reliable crimp-ing onto the insulation of a conductor with no crimp-retaining metal between the housing portion and the insulation of the conductor.
According to this invention an electrical connector housing has two integrally formed portions together defining a bore for receiving an electrical terminal and an insulated electrical conductor, and extending axially of the housing, there being a first portion to receive a contact portion of the terminal, a second portion to receive a crimping ferrule portion of the terminal, and a third portion for crimping about the insula-tion of the conductor when the conductive core thereof is crimped in the ferrule portion of the terminal, the first and second portions of the housing
Many electrical connectors are known which comprise a housing of electrically insulating material containing an electrical terminal.
The terminal of such a connector can be connected to the conduc-tive core of an insulated electrical conductor by crimping, with the housing being applied to the terminal either before or after such crimping is carried out.
In the case where the housing is applied to the terminal prior to crimping of the terminal onto a conductor, the housing can extend not only over the portion of the terminal to be crimped to the core of the conductor, but beyond such portion to extend over the insulation of the conductor for crimping onto the insulation to provide strain relief for the connection between the terminal and the conductor, and also to seal this connection.
Such connectors are advantageous since the terminals thereof are fully insulated prior to connection to a conductor, and this application of a complete connector to a conductor can be effected with a single crimping operation at which the terminal is crimped onto the core of the conductor and a portion of the housing is crimped onto the insulation of the conductor.
However, known housings for such connectors suffer from the dis-advantage that they do not meet the two requirements of providing a strong relatively rigid portion to contain the contact portion of a terminal while also providing a portion having the properties necessary for reliable crimp-ing onto the insulation of a conductor with no crimp-retaining metal between the housing portion and the insulation of the conductor.
According to this invention an electrical connector housing has two integrally formed portions together defining a bore for receiving an electrical terminal and an insulated electrical conductor, and extending axially of the housing, there being a first portion to receive a contact portion of the terminal, a second portion to receive a crimping ferrule portion of the terminal, and a third portion for crimping about the insula-tion of the conductor when the conductive core thereof is crimped in the ferrule portion of the terminal, the first and second portions of the housing
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being of a first electrically insulating material, and the third portion of the housing being of a second different electrically insulating material.
The housing of this invention has the advantage that it can meet the two requirements discussed above.
The housing of this invention can be manufactured by the method and apparatus described in our Canadian Patent Application No. 284,812 filed August 16, 1977, which method and apparatus enables the housing to be manu-factured by the injection of different plastics materials into a common mould cavity on the periphery of a continuously rotating wheel, the housing being formed integrally with a carrier strip common to a plurality of such housings and formed on the periphery of the wheel.
The provision of housings in such strip form has the advantage that the strip can be readily handled by automatic machinery operative to insert a terminal into each housing.
This invention will now be described by way of example with reference to the drawings, in which:-Figure 1 is a perspective view of a strip of housings according to the invention; ~ -Figure 2 is a longitudinal sectional view through one of the housings of Figure l;
Figure 3 is a perspective view illustrating insertion of an insulated electrical conductor into a connector including a housing as shown - in Figures 1 and 2;
Figure 4 is a perspective view of the connector of Figure 3 after crimping to the conductor;
Figure 5 is a plan view of a strip of housings according to the invention and illustrating stages in their manufacture and insertion of terminals into the housings;
Figure 6 is a section on the line YI - YI in Figure 5; and Figure 7 is a section on the line VII - VII in Figure 5.
~ -3-Figure 1 shows a plurality of housings 1 integrally formed with a common carrier strip 2.
Each housing 1 is for receiving a tab-receptacle terminal --101 and has a first portion 3 to receive a contact portion 100 of the terminal 101, a second portion 4 to receive a crimping ferrule portion 102 of the terminal 101 and a third portion 5 for crimping about the insulation 200 of an insulated electrical conductor 201 having a conductive core 202 received in the ferrule portion 102 of the terminal 101 (see Figures 3 and 5), the three portions 3, 4 and S together defining a terminal and conductor receiving bore extending axially of the housing 1.
As shown in Figure 2j the first and second portions 3 and 4 of each housing 1, and the carrier strip 2, are of a first ~:
plastics material, such as a filled nylon material, which is relatively rigid but which can withstand the compressive-. -forces to be applied to the second portion 4 when a terminal 101 in the housing 1 is crimped to a conductor 201. After such crimping the second portion 4 may relax out of embracing relationship with the crimped ferrule portion 102 of the terminal 101, but such relaxation will not adversely affect the connection between the terminal 101 and the conductor 201, and may in fact be beneficial in that the air gap thus formed between the second portion 4 of the housing 1 and the ferrule portion 102 of the terminal 101 can increase the effective insulation of the connector. .
The third portion 5 of each housing 1 is of a seccnd different plastics material, such as an aromatic nylon which is always amorphous, which will not relax after crimping of the third portion 5 of the housing about the insulation 200 of the ccnductor 201, and thus the crimped connection between the third - - _ 4 _ portion 5 and the insulation 200 provides strain relief for the connection between the ferrule 102 of the terminal 101 and the core 202 of the conductor 201, and also provides a seal against the passage of moisture along the conductor 201 into the connector.
Figure 3 illustrates insertion of a conductor 201 into a connector including a housing 1 as shown in Figures 1 and 2, an end portion of the core 202 of the conductor 201 being bared for reception in the crimping ferrule portion 102 of the terminal 101 contained in the housing 1. Figure 4 shows the connector of Figure 3 after crimping to the conductor 201.
Figure 5 illustrates successive stages in the manufacture of connectors as shown-in.Figures 3 and 4, progression being from right to left in Figure 5.
A plurality of housings 1 are moulded in side-by-side relationship integrally with a common carrier web 6, for example using the method and apparatus of the above noted application.
Lateral edge portions 7 are~then cut from the web 6 to provide the web 6 with straight edges, the portions 5 of the housings 1 extending up to one edge, and the other edge being spaced from the open mouths of the portions 3 of the housings 1. Portions 8 of the web 6 between adjacent housings 1 are then stamped from the web 6 to leave the housings connected only by the carrier strip 2, the strip then being as shown in Figure 1. A tab-receptacle terminal 101 is then inserted into each housing 1 through the open end of the portion 3 thereof, the crimping ferrule portion 102 of the terminal 101 becoming located in the portion 4 of the housing 1, and the contact portion 100 of the terminal 101 becoming located in the portion 3 of the housing 1.
A conductor 2Gl is then introduced into the thus formed connector 1078941 .-(see also Figure 3) whereafter the crimping operation is carried out to provide a connector assembly as shown in Figure 4. - -Figure 6 shows the substantially rectangular cross-section oi the bore of the portion 3, and the circular cross-section of the bore of the portion 4 of each housing 1, while Figure 7 shows the circular cross-section bore of the portion 5 of each housing - 1. All of the portions 3, 4 and 5 have substantially planar bases formed by parts of the web 6 shown in Figure 5, this - resulting from the method of manufacture o the housings 1.
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being of a first electrically insulating material, and the third portion of the housing being of a second different electrically insulating material.
The housing of this invention has the advantage that it can meet the two requirements discussed above.
The housing of this invention can be manufactured by the method and apparatus described in our Canadian Patent Application No. 284,812 filed August 16, 1977, which method and apparatus enables the housing to be manu-factured by the injection of different plastics materials into a common mould cavity on the periphery of a continuously rotating wheel, the housing being formed integrally with a carrier strip common to a plurality of such housings and formed on the periphery of the wheel.
The provision of housings in such strip form has the advantage that the strip can be readily handled by automatic machinery operative to insert a terminal into each housing.
This invention will now be described by way of example with reference to the drawings, in which:-Figure 1 is a perspective view of a strip of housings according to the invention; ~ -Figure 2 is a longitudinal sectional view through one of the housings of Figure l;
Figure 3 is a perspective view illustrating insertion of an insulated electrical conductor into a connector including a housing as shown - in Figures 1 and 2;
Figure 4 is a perspective view of the connector of Figure 3 after crimping to the conductor;
Figure 5 is a plan view of a strip of housings according to the invention and illustrating stages in their manufacture and insertion of terminals into the housings;
Figure 6 is a section on the line YI - YI in Figure 5; and Figure 7 is a section on the line VII - VII in Figure 5.
~ -3-Figure 1 shows a plurality of housings 1 integrally formed with a common carrier strip 2.
Each housing 1 is for receiving a tab-receptacle terminal --101 and has a first portion 3 to receive a contact portion 100 of the terminal 101, a second portion 4 to receive a crimping ferrule portion 102 of the terminal 101 and a third portion 5 for crimping about the insulation 200 of an insulated electrical conductor 201 having a conductive core 202 received in the ferrule portion 102 of the terminal 101 (see Figures 3 and 5), the three portions 3, 4 and S together defining a terminal and conductor receiving bore extending axially of the housing 1.
As shown in Figure 2j the first and second portions 3 and 4 of each housing 1, and the carrier strip 2, are of a first ~:
plastics material, such as a filled nylon material, which is relatively rigid but which can withstand the compressive-. -forces to be applied to the second portion 4 when a terminal 101 in the housing 1 is crimped to a conductor 201. After such crimping the second portion 4 may relax out of embracing relationship with the crimped ferrule portion 102 of the terminal 101, but such relaxation will not adversely affect the connection between the terminal 101 and the conductor 201, and may in fact be beneficial in that the air gap thus formed between the second portion 4 of the housing 1 and the ferrule portion 102 of the terminal 101 can increase the effective insulation of the connector. .
The third portion 5 of each housing 1 is of a seccnd different plastics material, such as an aromatic nylon which is always amorphous, which will not relax after crimping of the third portion 5 of the housing about the insulation 200 of the ccnductor 201, and thus the crimped connection between the third - - _ 4 _ portion 5 and the insulation 200 provides strain relief for the connection between the ferrule 102 of the terminal 101 and the core 202 of the conductor 201, and also provides a seal against the passage of moisture along the conductor 201 into the connector.
Figure 3 illustrates insertion of a conductor 201 into a connector including a housing 1 as shown in Figures 1 and 2, an end portion of the core 202 of the conductor 201 being bared for reception in the crimping ferrule portion 102 of the terminal 101 contained in the housing 1. Figure 4 shows the connector of Figure 3 after crimping to the conductor 201.
Figure 5 illustrates successive stages in the manufacture of connectors as shown-in.Figures 3 and 4, progression being from right to left in Figure 5.
A plurality of housings 1 are moulded in side-by-side relationship integrally with a common carrier web 6, for example using the method and apparatus of the above noted application.
Lateral edge portions 7 are~then cut from the web 6 to provide the web 6 with straight edges, the portions 5 of the housings 1 extending up to one edge, and the other edge being spaced from the open mouths of the portions 3 of the housings 1. Portions 8 of the web 6 between adjacent housings 1 are then stamped from the web 6 to leave the housings connected only by the carrier strip 2, the strip then being as shown in Figure 1. A tab-receptacle terminal 101 is then inserted into each housing 1 through the open end of the portion 3 thereof, the crimping ferrule portion 102 of the terminal 101 becoming located in the portion 4 of the housing 1, and the contact portion 100 of the terminal 101 becoming located in the portion 3 of the housing 1.
A conductor 2Gl is then introduced into the thus formed connector 1078941 .-(see also Figure 3) whereafter the crimping operation is carried out to provide a connector assembly as shown in Figure 4. - -Figure 6 shows the substantially rectangular cross-section oi the bore of the portion 3, and the circular cross-section of the bore of the portion 4 of each housing 1, while Figure 7 shows the circular cross-section bore of the portion 5 of each housing - 1. All of the portions 3, 4 and 5 have substantially planar bases formed by parts of the web 6 shown in Figure 5, this - resulting from the method of manufacture o the housings 1.
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Claims (6)
1. An electrical connector housing including two integrally formed portions together defining a bore for receiving an electrical terminal and an insulated electrical conductor, and extending axially of the housing, there being a first portion to receive a contact portion of the terminal, a second portion to receive a crimping ferrule portion of the terminal, and a third portion for crimping about the insulation of the conductor when the conductive core thereof is crimped in the ferrule portion of the terminal, the first and second portions of the housing being of a first electrically insulating material, and the third portion of the housing being of a second different electrically insulating material.
2. A plurality of housings each as claimed in Claim 1, carried in side-by-side relationship by an integrally formed common carrier strip.
3. A plurality of housings as claimed in Claim 2, in which the carrier strip is connected to each housing at the free end of the first portion thereof, and is of the first material.
4. An electrical connector comprising a housing as claimed in Claim 1 and an electrical terminal received in the housing.
5. A connector as claimed in Claim 4, in which the terminal has a contact portion received in the first portion of the housing and a crimping ferrule portion received in the second portion of the housing.
6. A connector as claimed in Claim 4 or Claim 5, in which the terminal is a tab receptacle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA287,672A CA1078941A (en) | 1977-09-28 | 1977-09-28 | Electrical connector housing made from two thermoplastic materials |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA287,672A CA1078941A (en) | 1977-09-28 | 1977-09-28 | Electrical connector housing made from two thermoplastic materials |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1078941A true CA1078941A (en) | 1980-06-03 |
Family
ID=4109648
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA287,672A Expired CA1078941A (en) | 1977-09-28 | 1977-09-28 | Electrical connector housing made from two thermoplastic materials |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1078941A (en) |
-
1977
- 1977-09-28 CA CA287,672A patent/CA1078941A/en not_active Expired
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |