Electrical connector with touch-safety contact structures

• US 8,545,275 B2
• Filed: 12/06/2010
• Issued: 10/01/2013
• Est. Priority Date: 04/07/2010
• Status: Active Grant

• Current Assignee: Alltop Electronic Company Limited
• Original Assignee: Alltop Electronics (Shuzhou) Ltd.
• Inventors: Wang, Chin-Li, Shen, Ya-Hui
• Primary Examiner(s): Abrams, Neil
• Application Number:
  US12/961,232
• Publication Number:
  US 20110250769A1
• Time in Patent Office: 1,030 Days
• Field of Search: 439/693, 439/106, 439/181, 439/682, 439/680, 439/732
• US Class Current: 439/693
• CPC Class Codes: H01R 13/44 Means for preventing access to live contacts making use of a switch actuated by engagement of counterpart H01R13/7036
• CPC Class Codes: H01R 13/64 Means for preventing incorrect coupling
• CPC Class Codes: H01R 2103/00 Two poles
• CPC Class Codes: H01R 24/22 with additional earth or shield contacts
• CPC Class Codes: H01R 24/70 with additional earth or shield contacts

Abstract

An electrical connector with touch safety contact structure. The connector includes an insulative housing, a contact and at least one protecting insulator. The insulative housing defines a mating direction, a mating face and a receiving cavity recessed from the mating face along the mating direction. The contact is received in the insulative housing and includes a contacting portion exposed into the receiving cavity, a retaining portion extending from one end of the contacting portion to be interferentially received in the insulative housing, and a forward end extending from the other end of the contacting portion to locate more closely to the mating face of the insulative housing than the contacting portion, and a connecting portion extending from the retaining portion to be exposed beyond the insulative housing. The protecting insulator covers the forward end of the contact. An additional grounding contact assembled to the insulative housing may be included.

Claims

1. An electrical connector adapted for electrically connecting with a complementary connector, comprising:

an insulative housing defining a mating direction, a mating face and a receiving cavity recessed from the mating face along said mating direction;

a plurality of contacts received in the insulative housing adapted for electrically connecting with contacts of the complementary connector, each of the contacts comprising a contacting portion exposed into the receiving cavity adapted for electrically connecting with the respective contact of the complementary connector, a retaining portion extending from one end of the contacting portion to be interferentially received in the insulative housing, a forward end extending from the other end of the contacting portion to locate more closely to the mating face of the insulative housing than the contacting portion, and a connecting portion extending from the retaining portion to be exposed beyond the insulative housing; and

a protecting insulator entirely covering the forward end of each one of the contacts;

wherein the insulative housing forms a plurality of partition racks extending into the receiving cavity to separate the receiving cavity into a plurality of contact-receiving passageways, and wherein the contacts are respectively received in the contact-receiving passageways and spaced from one another by the partition racks.

2. The electrical connector as claimed in claim 1, wherein the protecting insulator is inset-molded/assembled to the forward end of the respective contact.

3. The electrical connector as claimed in claim 1, wherein the forward end is shrunk forwardly from the contacting portion, and wherein the protecting insulator covering the forward end has outer surfaces respectively coplanar with those of the contacting portion.

4. The electrical connector as claimed in claim 1, wherein the electrical connector comprises three contacts for power transmission, each contact has a forward end covered by a protecting insulator.

5. The electrical connector as claimed in claim 4, wherein the contacts are arranged in triangle relationship with a positive contact and a negative contact arranged on the same line, while a grounding contact is arranged at the top of the triangle.

6. The electrical connector as claimed in claim 5, further comprising an additional grounding contact assembled to the insulative housing to locate below the grounding contact.

7. The electrical connector as claimed in claim 6, wherein the grounding contact and the additional grounding contact electrically connect with the same contact of the complementary connector, and wherein the additional grounding contact forms electrical connection with said contact of the complementary connector later than the grounding contact.

8. The electrical connector as claimed in claim 6, wherein the additional grounding contact comprise an additional contacting portion, an additional retaining portion interferentially received in the insulative housing and an additional connecting portion exposed beyond the insulative housing.

9. The electrical connector as claimed in claim 5, further comprising an additional grounding contact assembled to the same contact-receiving passageway together the grounding contact adapted for electrically connect with the same contact of the complementary connector.

10. The electrical connector as claimed in claim 5, further comprising a retainer assembled to the insulative housing to hold the contacts together with the insulative housing.

11. The electrical connector as claimed in claim 10, wherein the retainer is insert-molded with the contacts and assembled to the insulative housing together with the contacts.