Source: http://www.patentgenius.com/patent/7134890.html
Timestamp: 2018-04-20 20:37:12
Document Index: 513124326

Matched Legal Cases: ['art 21', 'art 25', 'art 21', 'art 21', 'art 25', 'art 21', 'art 32', 'art 32']

Electrical connector with improved structure - Patent # 7134890 - PatentGenius
7134890 Electrical connector with improved structure
Application: 11/145,075
Inventors: Wang; Wei Che (Tu-Chen, TW)
Field Of Search: 439/188; 439/668; 439/669; 200/51.1
U.S Patent Documents: 5007851; 5075518; 6077126; 6382999; 6551115; 6575793; 6690801; 6923687
Abstract: An electrical connector (7) includes an insulative housing (1) having front and rear faces (10, 20). A first and a second receiving rooms (101, 102), which communicate with each other are defined in the insulative housing (1) and extend forwardly from the rear face (20). A third receiving room (103) is defined in the insulative housing (1) and extends forwardly from the rear face (20) as well. A retaining cavity (6) is in communication with the third receiving room (103). A resilient contact (2) is received in the first receiving room (101) and comprises a first contacting portion and a first connecting portion (23) beyond the rear face (20). A central contact (4) comprises a plate portion (41) received in the third receiving room (103), a fork-type contacting portion (42) extending forwardly from the plate portion (41) and a third connecting portion (43). The plate portion (41) has a retention member (44) for engagement with the retaining cavity (6).
1. An electrical connector, comprising: an insulative housing having a front face and a rear face; a first receiving room defined in the insulative housing and extendingforwardly from the rear face; a second receiving room defined in the insulative housing and extending forwardly from the rear face, the second receiving room communicating with the first receiving room; a third receiving room defined in the insulativehousing and extending forwardly from the rear face; a retaining cavity defined in the insulative housing and being in communication with the third receiving room; a resilient contact being received in the first receiving room and comprising a firstcontacting portion and a first connecting portion beyond the rear face; a central contact comprising a plate portion received in the third receiving room, a fork-type contacting portion extending forwardly from the plate portion and a third connectingportion, the plate portion having a retention member engagingly received in the retaining cavity.
2. The electrical connector as claimed in claim 1, wherein said retaining cavity comprises a first retaining groove and a second retaining groove, said retention member comprises a first retention portion and a second retention portion, andwherein the first retention portion engagingly received in the first retaining groove, and the second retention portion engagingly received in the second retaining groove.
3. The electrical connector as claimed in claim 2, wherein said first retaining groove and said second retaining groove are positioned at opposite sides of the third receiving room, respectively.
4. The electrical connector as claimed in claim 1, wherein the electrical connector comprises a post formed in the insulative housing and defining a passageway in communication with the third receiving room, and wherein said fork-typecontacting portion of the central contact is received in the passageway.
5. The electrical connector as claimed in claim 4, wherein the insulative housing comprises a body portion and an annular section projecting forwardly from said front face, and wherein a receiving space is formed between the post and theannular section, and communicates with the first and second receiving rooms.
6. The electrical connector as claimed in claim 1, wherein the electrical connector further comprises a fixed contact received in the second receiving room, wherein the resilient contact comes in contact with or separates from the fixedcontact.
7. The electrical connector as claimed in claim 6, wherein said fixed contact is stamped and configured from a metal sheet.
8. The electrical connector as claimed in claim 6, wherein said fixed contact comprises a second contacting portion and a second connecting portion, and wherein said second contacting portion comprises a flat plate with a protruding part formedthereon, the second connecting portion extending rearwardly from a lateral edge of the flat plate.
9. The electrical connector as claimed in claim 6, wherein said insulative housing further comprises a left lateral wall and a cutout is defined in the left lateral wall, and wherein the second connecting portion of said fixed contact ispartially received in said cutout.
10. The electrical connector as claimed in claim 8, wherein said resilient contact comprises a touching finger, coming in contact with or separating from the protruding part of the fixing contact.
11. The electrical connector as claimed in claim 1, wherein said resilient contact comprises a spring tab and said insulative housing has a stepped portion formed in an upper surface thereof, and wherein the spring tab is engaged with thestepped portion.
12. The electrical connector as claimed in claim 1, wherein said central contact and resilient contact are stamped and configured from metal sheets.
13. An electrical connector comprising: an insulative housing defining a circular mating port, and first, second and third receiving rooms therein, said first and second receiving rooms communicating with each other in a radial direction, thethird room located essentially at a middle level of the housing and in alignment with a center of said mating port in an axial direction; a central post formed in said mating port and defining a passageway therein which communicates with the thirdreceiving room in the axial direction; a first contact received in the first receiving room; a second contact having a planar retention portion received in the second receiving room; a third contact having a planar retaining portion received in thethird receiving room, and a mating portion received in the passageway.
14. The electrical connector as claimed in claim 13, wherein said planar retention portion and said retaining portion are parallel to each other.
15. The electrical connector as claimed in claim 14, wherein said first contact constantly engages the second contact until a plug is inserted into the mating port to connect to the third contact.
16. The electrical connector as claimed in claim 15, wherein the first, second and third contacts have corresponding first, second and third solder tails, respectively, and wherein the first solder tail and the third solder tail are parallel toeach other but both perpendicular to the second solder tail.
17. An electrical connector comprising: an insulative housing defining a circular mating port therein with a post having a passageway; first, second and third contacts sequentially disposed in the housing in a radial direction; the firstcontact defining a first planar section and a curved connecting section extending backwardly from a front end of said first planar section; the second contact defining a second planar section; the third contact defining a third planar section and afork-like mating section extending forwardly from the third planar section and into the passageway; the first, second and third planar sections being parallel to one another; and the curved contacting section constantly engaged with the second contactuntil a plug is inserted into the mating port.
18. The electrical connector as claimed in claim 17, wherein the third planar section is essentially aligned with the passageway in an axial direction.
19. The electrical connector as claimed in claim 17, wherein a solder tail of the third contact is parallel to that of the first contact while being perpendicular to that of the second contact.
The present invention generally relates to an electrical connector and, more particularly, to a power jack.
An electric product such as a notebook computer, a PDA, a digital camera or the like is required to be made as compactly as possible, therefore, electrical connectors used therein are also strongly required to be made in extremely compact designsby minimizing outer dimensions thereof. U.S. Pat. No. 5,007,851 issued to Hosiden on Apr. 16, 1991 discloses a power socket having a housing, a pin, a stationary contact and a movable contact, all of which are received in the housing. The pin andthe stationary and movable contacts are disposed in a direction parallel to a mounting surface of a printed circuit board on which the power socket is mounted. The pin is secured to the housing of the power socket by an additional engagement fixing bodyintegrally formed with a rear wall of the housing. Therefore, the occupied space of the power socket on the printed circuit board is increased, which is out of current trend. The engagement fixing body has a complex structure, thus, increasingmanufacturing difficulty and cost.
Hence, an electrical connector having thin improved structure is required to overcome the disadvantage of the prior art.
It is an object of the present invention to provide an electrical connector, which has a low profile.
In order to achieve the above-mentioned object, an electrical connector in accordance with the present invention includes an insulative housing having a body portion and an annular section extending from the body portion. The body portion has afront face and a rear face. A first receiving room, which receives a resilient contact is defined in the rear face of the body portion and extends into the body portion. A second receiving room communicating with the first receiving room is defined inthe rear face of the body portion and extends into the body portion. A third receiving room is defined in the rear face of the body portion and extends into the body portion. A retaining cavity is defined in the body portion of the insulative housingand in communication with the third receiving room. A central contact has a retention member engaging with the retaining cavity.
FIG. 2 is a rear exploded, perspective view of the electrical connector in accordance with the present invention;
FIG. 4 is a cross-sectional view of the electrical connector taken along line 4--4 of FIG. 1; and
FIG. 5 is a cross-sectional view of the electrical connector taken along line 5--5 of FIG. 3.
Referring to FIG. 1 and FIG. 2, an electrical connector 7 in accordance with the present invention includes an insulative housing 1, a central contact 4 accommodated in the insulative housing 1, a resilient contact 2 and a fixed contact 3 locatedin the insulative housing 1 above the central contact 4. The contacts 2, 3, 4 are stamped and configured from metal sheets.
The insulative housing 1 comprises a body portion 1A and an annular section 1B extending forwardly from the body portion 1A. The body portion 1A comprises a front face 10 from which the annular section 1B extends, a rear face 20 opposite to thefront face 10, opposite left and right lateral walls 30, 40, and opposite upper and lower surfaces 50, 60. The body portion 1A has a first receiving room 101, a second receiving room 102 and a third receiving room 103. The first receiving room 101,which is located adjacent to the upper surface 50 of the body portion 1A, is defined in the rear face 20 and extends forwardly into the body portion 1A. The second receiving room 102 in communication with and below the first receiving room 101 isdefined in the rear face 20 and extends forwardly into the body portion 1A. The third receiving room 103 below but not communicating with the second receiving room 102 is defined in the rear face 20. A post 10a is formed in the body portion 1A andextends beyond the front face 10. The post 1a defines a passageway 10b, which communicates with the third receiving room 103. The annular section 1B is positioned outside the post 10a and beyond the front face 10 of the body portion 1A. The annularsection 1B and the post 10a define a receiving space 11 therebetween, which extends in a predetermined distance in the body portion 1A and communicates with the first and second receiving rooms 101, 102. With the existence of the post 10a and theannular section 1B, a mating plug (not shown) cooperates with the electrical connector 7 correctly and properly by a pin of the plug inserted into the passageway 10b and a sleeve of the plug into the receiving space 11. The left and right lateral walls30, 40 are respectively provided in inner surfaces thereof with notches 12a, 13a, 12b, 13b for holding the resilient and fixed contacts 2, 3. A cutout 301 is defined in the outer surface of the left lateral wall 30. A retaining cavity 6 close to therear face 20 is defined in the body portion 1A and comprises a first retaining groove 601 and a second retaining groove 602, which locate at opposite sides of the third receiving room 103 and extends downward for retaining the central contact 4, whichwill be detailed hereinafter.
Referring to FIG. 2 and FIG. 3, the resilient contact 2 is configured in a U-shape and comprises a first contacting portion and a first connecting portion 23. The first contacting portion comprises a plate part 21 and a resilient part 25 bendingbackward from a front edge of the plate part 21. The plate part 21 has a spring tab 24, which is cut and obliquely outwardly raised, and opposite edges 210. The resilient part 25 has a pair of touching fingers 22 having respective protruding points 221positioned thereat. The first connecting portion 23 extends from a rear edge of the plate part 21. The resilient contact 2 is secured to the first receiving room 101 with opposite edges 210 inserted into corresponding notches 12a, 12b. The spring tab24 is engaged with a stepped portion 501 formed in the upper surface 50 of the insulative housing 1 for preventing a rearward movement of the resilient contact 2, as best shown in FIG. 4. The first connecting portion 23 extends beyond the rear face 20of the body portion 1A of the insulative housing 1 and connects to a cable (not shown).
A fixed contact 3 comprises a second contacting portion and a second connecting portion 33. The second contacting portion has a flat plate 31 with a protruding part 32 formed thereon. The second connecting portion 33 extends rearward from arear lateral edge of the flat plate 31. The flat plate 31 is provided in the middle of lateral edges thereof with a pair of engagement pawls 34. The fixed contact 3 is secured to the second receiving room 102 with the lateral edges inserted intocorresponding notches 13a, 13b and the engagement pawls 34 pressing against inner surfaces of the notches 13a, 13b. The second connecting portion 33 perpendicular to the flat plate 31 is partially received in the cutout 103 and extends beyond the rearface 20 of the body portion 1A of the insulative housing 1 for connecting to the cable. When the resilient contact 2 and the fixed contact 3 are received in the insulative housing 1, the protruding points 221 of the touching fingers 22 of the resilientcontact 2 are pressed on the flat plate 31 of the fixed contact 3 and rear ends of the touching fingers 22 are leaned against the protruding part 32 of the fixed contact 3. When the mating plug cooperates with the electrical connector 7, the resilientcontact 2 is separated from the fixed contact 3 by a terminal of the sleeve of the mating plug, thereby, realizing a switch function of the electrical connector 7.
The central contact 4 comprises a plate portion 41, a fork-type contacting portion 42 extending forwardly from a front edge of the plate portion 41 and a third connecting portion 43 extending rearward from a rear edge of the plate portion 41. The plate portion 41 has a retention member 44, which contains a first retention portion 44a and a second retention portion 44b, for engagement with the retaining cavity 6. The central contact 4 is secured into the body portion 1A with the fork-typecontacting portion 42 received in the passageway 10b and the plate portion 41 received in the third receiving room 103. The first and second retention portions 44a, 44b extend obliquely to the corresponding retaining grooves 601, 602, as shown in FIGS.2 and 5, so that, the central contact 4 cannot be removed from the body portion 1A of the insulative housing 1. The third connecting portion 43 not whole overlapped by but parallel to the first connecting portion 23 of the resilient contact 2 extendsbeyond the rear face 20 of the insulative housing 1 and connects the cable.
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