Connector
11652308 · 2023-05-16
Assignee
Inventors
Cpc classification
H01R13/26
ELECTRICITY
H01R13/6594
ELECTRICITY
H01R24/60
ELECTRICITY
H01R13/6474
ELECTRICITY
International classification
H01R12/00
ELECTRICITY
H01R13/26
ELECTRICITY
Abstract
A connector mounted on a substrate includes: a plurality of contacts; and a housing, wherein the plurality of contacts include a plurality of first contacts arranged next to one another in a first row and a plurality of second contacts arranged next to one another in a second row parallel to and apart from the first row, the connector further including: for the first row, at least one electrically conductive first bar-shaped member which is present further outward than a first outermost one of the first contacts, which is fixed to the substrate, and which is supported by the housing; and for the second row, at least one electrically conductive second bar-shaped member which is present further outward than a first outermost one of the second contacts, which is fixed to the substrate, and which is supported by the housing.
Claims
1. A connector mounted on a substrate, the connector comprising: a plurality of contacts each including at a first end a contact portion to which a terminal of a mating connector is electrically connectable and at a second end a fixing portion fixed to the substrate; and a housing supporting the plurality of contacts, wherein the plurality of contacts include a plurality of first contacts arranged next to one another in a first row and a plurality of second contacts arranged next to one another in a second row parallel to and apart from the first row, the connector further comprises: for the first row, at least one electrically conductive first bar-shaped member which is present further outward than a first outermost one of the first contacts, which is fixed to the substrate, which is supported by the housing, and to which the mating connector is not electrically connectable; and for the second row, at least one electrically conductive second bar-shaped member which is present further outward than a first outermost one of the second contacts, which is fixed to the substrate, which is supported by the housing, and to which the mating connector is not electrically connectable.
2. The connector according to claim 1, wherein the at least one first bar-shaped member includes two first bar-shaped members opposite to each other in such a manner as to enclose the first contacts, and the at least one second bar-shaped member includes two second bar-shaped members opposite to each other in such a manner as to enclose the second contacts.
3. The connector according to claim 1, wherein the first contacts are present in an even number and next to one another at a predetermined distance, the second contacts are present in an odd number and next to one another at the predetermined distance, the at least one first bar-shaped member is next to the first outermost one of the first contacts at the predetermined distance, and the at least one second bar-shaped member is next to the first outermost one of the second contacts at the predetermined distance.
4. The connector according to claim 2, wherein the first contacts are present in an even number and next to one another at a predetermined distance, the second contacts are present in an odd number and next to one another at the predetermined distance, a first one of the two first bar-shaped members is next to the first outermost one of the first contacts at the predetermined distance, a second one of the two first bar-shaped members is next to a second outermost one of the first contacts at the predetermined distance, a first one of the two second bar-shaped members is next to the first outermost one of the second contacts at the predetermined distance, and a second one of the two second bar-shaped members is next to a second outermost one of the second contacts at the predetermined distance.
5. The connector according to claim 1, wherein the at least one first bar-shaped member and the at least one second bar-shaped member are each identical in shape to each of the plurality of contacts except for lack of the contact portion.
6. The connector according to claim 2, wherein the two first bar-shaped members and the two second bar-shaped members are each identical in shape to each of the plurality of contacts except for lack of the contact portion.
7. The connector according to claim 3, wherein the at least one first bar-shaped member and the at least one second bar-shaped member are each identical in shape to each of the plurality of contacts except for lack of the contact portion.
8. The connector according to claim 4, wherein the two first bar-shaped members and the two second bar-shaped members are each identical in shape to each of the plurality of contacts except for lack of the contact portion.
9. The connector according to claim 1, wherein the housing includes a base portion and a protruding portion protruding from the base portion and supporting the plurality of contacts, and the base portion has (i) a plurality of through holes in which the plurality of contacts are partially present and (ii) a plurality of hole portions which are blocked on a side of the protruding portion and in which the at least one first bar-shaped member and the at least one second bar-shaped member are partially present.
10. The connector according to claim 2, wherein the housing includes a base portion and a protruding portion protruding from the base portion and supporting the plurality of contacts, and the base portion has (i) a plurality of through holes in which the plurality of contacts are partially present and (ii) a plurality of hole portions which are blocked on a side of the protruding portion and in which the two first bar-shaped members and the two second bar-shaped members are partially present.
11. The connector according to claim 3, wherein the housing includes a base portion and a protruding portion protruding from the base portion and supporting the plurality of contacts, and the base portion has (i) a plurality of through holes in which the plurality of contacts are partially present and (ii) a plurality of hole portions which are blocked on a side of the protruding portion and in which the at least one first bar-shaped member and the at least one second bar-shaped member are partially present.
12. The connector according to claim 4, wherein the housing includes a base portion and a protruding portion protruding from the base portion and supporting the plurality of contacts, and the base portion has (i) a plurality of through holes in which the plurality of contacts are partially present and (ii) a plurality of hole portions which are blocked on a side of the protruding portion and in which the two first bar-shaped members and the two second bar-shaped members are partially present.
13. The connector according to claim 5, wherein the housing includes a base portion and a protruding portion protruding from the base portion and supporting the plurality of contacts, and the base portion has (i) a plurality of through holes in which the plurality of contacts are partially present and (ii) a plurality of hole portions which are blocked on a side of the protruding portion and in which the at least one first bar-shaped member and the at least one second bar-shaped member are partially present.
14. The connector according to claim 6, wherein the housing includes a base portion and a protruding portion protruding from the base portion and supporting the plurality of contacts, and the base portion has (i) a plurality of through holes in which the plurality of contacts are partially present and (ii) a plurality of hole portions which are blocked on a side of the protruding portion and in which the two first bar-shaped members and the two second bar-shaped members are partially present.
15. The connector according to claim 7, wherein the housing includes a base portion and a protruding portion protruding from the base portion and supporting the plurality of contacts, and the base portion has (i) a plurality of through holes in which the plurality of contacts are partially present and (ii) a plurality of hole portions which are blocked on a side of the protruding portion and in which the at least one first bar-shaped member and the at least one second bar-shaped member are partially present.
16. The connector according to claim 8, wherein the housing includes a base portion and a protruding portion protruding from the base portion and supporting the plurality of contacts, and the base portion has (i) a plurality of through holes in which the plurality of contacts are partially present and (ii) a plurality of hole portions which are blocked on a side of the protruding portion and in which the two first bar-shaped members and the two second bar-shaped members are partially present.
Description
BRIEF DESCRIPTION OF DRAWINGS
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(2)
(3)
(4)
(5)
(6)
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(8)
DESCRIPTION OF EMBODIMENTS
(9) The description below deals with a connector as an embodiment of this disclosure with reference to drawings. The embodiment described below is, as an example connector, an HDMI (registered trademark) Type A connector 100 for high-speed differential signal transmission. This disclosure is, however, not limited to the embodiment below, and may be altered variously without departing from its scope.
(10) As illustrated in
(11) As illustrated in
(12) As illustrated in
(13) The differential signal terminals for use in TMDSData2+ and TMDSData2− transmission correspond to, among the three contacts 1A, 1B, 1C, 1D of each of the four sets, a pair of contacts 1A and 1A, a pair of contacts 1B and 1B, a pair of contacts 1C and 1C, and a pair of contacts 1D and 1D each present in the same row and having respective contact portions 11a adjacent to each other. In other words, these pairs of contacts 1A and 1A, contacts 1B and 1B, contacts 1C and 1C, and contacts 1D and 1D each serve as a differential pair, whereas the remaining single contacts 1A, 1B, 1C, and 1D, each present in the other row and among the pairs of adjacent contact portions 11a and having a contact portion 11b, each serve as a ground terminal.
(14) The seven contacts 1E are specifically as follows: That contact 1E which has the innermost contact portion 11c in the first row serves as a CEC terminal for use in transmission of a CEC signal as control data. That contact 1E which has a contact portion 11d adjacent to the contact portion 11c serves as a terminal for use in transmission of a serial clock (SCL) signal as a clock signal for use in synchronization for transmission of a SDA signal. That contact 1E which has a contact portion 11e adjacent to the contact portion 11d serves as a CEC/DDC ground terminal. That contact 1E which has the outermost contact portion 11f adjacent to the contact portion 11e serves as a hot plug detection terminal for detecting the state of connection to a mating connector. That contact 1E which has the innermost contact portion 11g in the second row is reserved. That contact 1E which has a contact portion 11h adjacent to the contact portion 11g serves as a terminal for use in transmission of a serial data (SDA) signal such as an E-EDID signal. That contact 1E which has the outermost contact portion 11i adjacent to the contact portion 11h serves as a power source terminal.
(15) As described above, three contacts 1A, 1B, 1C, 1D form a set. Those contacts 1A, 1B, 1C, and 1D each of which has a contact portion 11b and serves as a ground terminal share an equal electric potential while being supplied with electricity. The pair of contacts 1A and 1A having respective contact portions 11a are surrounded by those contacts 1A and 1B which have respective contact portions 11b. The pair of contacts 1B and 1B having respective contact portions 11a are surrounded by those contacts 1A, 1B and 1C which have respective contact portions 11b. The pair of contacts 1C and 1C having respective contact portions 11a are surrounded by those contacts 1B, 1C and 1D which have respective contact portions 11b. The pair of contacts 1D and 1D having respective contact portions 11a are surrounded by those contacts 1C and 1D which have respective contact portions 11b. TMDSData2+ and TMDSData2− transmission signals, which are high-frequency signals, each have a stable impedance property as the pairs of contacts 1A and 1A, contacts 1B and 1B, contacts 1C and 1C, and contacts 1D and 1D are each surrounded by a plurality of ground terminals having respective contact portions 11b.
(16) Similarly, that contact 1E which has a contact portion 11c for transmission of a CEC signal, that contact 1E which has a contact portion 11d for transmission of a SCL signal, and that contact 1E which has a contact portion 11h for transmission of an SDA signal are each surrounded by that contact 1D which has a contact portion 11b and which serves as a ground terminal and that contact 1E which has a contact portion 11e and which serves as a ground terminal.
(17) The contacts 1 are arranged as described above. Thus, in the first row, no outwardly adjacent terminal is present next to the contact 1A which has an outermost contact portion 11a among the differential pairs or that contact 1E which has a contact portion 11f as a hot plug detection terminal, and in the second row, no outwardly adjacent terminal is present next to that contact 1A which has a contact portion 11b and which serves as a ground terminal or that contact 1E which has a contact portion 11i and which serves as a power source terminal. Of the outermost contacts 1A and 1E, the contacts 1A having respective contact portions 11a serve to transmit a high-frequency signal. Of the seven contacts 1E, only that contact 1E which has a contact portion 11e serves as a ground terminal. Those contacts 1A and 1E which have respective contact portions 11a, 11c, 11d, and 11h and which serve to transmit a high-frequency signal are each surrounded by a fewer number of ground terminals, and would thus each normally have a high impedance as compared to the contacts 1 having the other contact portions 11. This would result in an impedance imbalance between the contacts 1A and 1E and the other contacts. The impedance property would differ between the differential pair of the outermost contacts 1A and the respective other differential pairs of the contacts 1B, 1C and 1D, in particular.
(18) As illustrated in
(19) With reference to
(20) The connector 100, as mentioned above, includes first bar-shaped members 4A and second bar-shaped members 4B both supported by the housing 2, the bar-shaped members 4A and 4B being not electrically connectable to a mating connector and serving to protect the contacts. The connector 100, in other words, includes first bar-shaped members 4A and second bar-shaped members 4B present outward of signal transmission contacts 1 for contact protection. This prevents detachment of the contacts 1 from the substrate S without impairing the signal transmission function of the connector 100. Further, the bar-shaped members 4A and 4B are present respectively for the two rows, and thereby keep the contacts 1 fixed to the substrate S firmly. The contacts 1A and 1E having respective contact portions 11a, 11c, 11d, and 11h are each surrounded by a fewer number of ground terminals and would thus each tend to have a high impedance. In view of that, the electrically conductive first bar-shaped members 4A and second bar-shaped members 4B are present further outward than those contacts 1A and 1E and each serve as a ground terminal. This reduces the respective impedances of the contacts 1A and 1E, and thereby adjusts the impedance balance throughout the connector 100.
(21) The connector 100 includes two first bar-shaped members 4A for a first row that are opposite to each other in such a manner as to enclose a plurality of contacts 1 and two second bar-shaped members 4B for a second row that are opposite to each other in such a manner as to enclose a plurality of contacts 1. This keeps the contacts 1 fixed to the substrate S more firmly, and thereby reliably prevents the contacts 1 from becoming detached. The connector 100 includes (i) even-numbered contacts 1 next to one another at an equal distance in a first row, (ii) odd-numbered contacts 1 next to one another at the equal distance in a second row, (iii) two first bar-shaped members 4A each next to an outermost contact 1 in the first row at the same distance, and (iv) two second bar-shaped members 4B each next to an outermost contact 1 in the second row at the same distance. This allows the contacts 1 and the bar-shaped members 4A and 4B both fixed to the substrate S to be next to one another in a well-balanced pattern. This allows the contacts 1 to be fixed to the substrate S more firmly, and thereby reliably prevents the contacts 1 from becoming detached.
(22) As illustrated in
(23) As illustrated in
(24) As illustrated in
(25) The base body 21A includes, at opposite sides of its back surface, a pair of third alignment protrusions 21f each protruding by the same amount as the second alignment protrusions 21e. Each third alignment protrusion 21f and its adjacent second alignment protrusion 21e support the second vertical portion 43 of a first bar-shaped member 4A. The base body 21A further includes, on its back surface, a block-shaped portion 21g present across the first alignment protrusions 21d from the third alignment protrusions 21f and extending in the direction in which the contacts 1 are arranged. The block-shaped portion 21g has, on a top surface thereof, a long groove 21g1 for guiding the shell 3 for insertion thereof. The block-shaped portion 21g is also in contact with those opposite portions of the shell 3 which are lateral to an engagement protrusion 31c (described later) of the shell 3 to restrict movement of the shell 3 toward the back surface side.
(26) As illustrated in
(27) As illustrated in
(28) As illustrated in
(29) The top wall 31 includes a plurality of (four for the present embodiment) first elastic pieces 31a resulting from punching out the top wall 31 and a plurality of (two for the present embodiment) contact protrusions 31b resulting from drawing the top wall 31 inward. The plurality of contact protrusions 31b function as a stopper when a mating connector has been inserted. The top wall 31 further includes, on a back surface side of the shell 3, an engagement protrusion 31c engaged with the long groove 21g1 of the housing 2 (see also
(30) The side walls 33 are each bent inward at 180 degrees on the front surface side of the shell 3. The side walls 33 include (i) a plurality of (two for the present embodiment) third elastic pieces 33a, (ii) a plurality of (four for the present embodiment) leg portions 33b each inserted in a through hole in the substrate S and soldered or otherwise fixed to the substrate S, and (iii) a plurality of (two for the present embodiment) bend pieces 33c each resulting from bending the corresponding side wall 33 inward at 90 degrees on the back surface side of the shell 3. The first elastic pieces 31a of the top wall 31, the second elastic pieces 32a of the bottom wall 32, and the third elastic pieces 33a of the side walls 33 are engageable with a mating connector while being elastically deformed. This allows the mating connector to be fixed to the connector 100. The bend pieces 33c are bent after the shell 3 is attached to the housing 2. This causes the bend pieces 33c to come into contact with the back surface of the housing 2, and thereby restricts movement of the shell 3 toward the front surface side (see
(31) The description below deals with how to assemble the connector 100. First, attach the shell 3 to the housing 2 from the front surface side with the bend pieces 33c parallel to the side walls 33 so that the engagement protrusion 31c of the top wall 31 is engaged with the long groove 21g1 in the housing 2 and that those opposite portions of the shell 3 which are lateral to the engagement protrusion 31c are in contact with the block-shaped portion 21g (see
(32) The present embodiment is arranged such that the hole portions 21b, which receive the first bar-shaped members 4A and the second bar-shaped members 4B, are blocked on the side of the protruding portion 22. This arrangement not only increases the force with which the housing 2 supports the bar-shaped members 4A and 4B, but also causes no influence on the electric connection between a mating connector and the respective contact portions 11 of the contacts 1.
(33) [Alternative Embodiments]
(34) (1) The embodiment described above includes two first bar-shaped members 4A opposite to each other in such a manner as to enclose a plurality of contacts 1 and two second bar-shaped members 4B opposite to each other in such a manner as to enclose a plurality of contacts 1. The embodiment may, however, be altered to include only one first bar-shaped member 4A on an outer side of a plurality of contacts 1 and/or only one second bar-shaped member 4B on an outer side of a plurality of contacts 1. In this case, the first bar-shaped member 4A and the second bar-shaped member 4B are preferably each present further outward than those contacts 1A which are outermost contacts 1 serving as a differential pair. This adjusts the impedance balance between the contacts 1A and the other pairs of contacts 1B, 1C and 1D, each serving as a differential pair.
(35) (2) The first bar-shaped members 4A and the second bar-shaped members 4B may each be next to its adjacent contact 1 as separated therefrom by a distance different from the distance by which the plurality of contacts 1 are apart from one another. The connector 100 may alternatively include a plurality of first bar-shaped members 4A on only one outer side of a plurality of contacts 1 and/or a plurality of second bar-shaped members 4B on only one outer side of a plurality of contacts 1. The respective numbers and arrangements of the first bar-shaped members 4A and the second bar-shaped members 4B are each not limited to any particular number or arrangement.
(36) (3) The hole portions 21b in the housing 2 may be unblocked on the side of the protruding portion 22 and be each in the shape of a through hole. In this case, the respective second press-fit portions 41 of the bar-shaped members 4A and 4B may each protrude on the front surface side and be bent at 90 degrees into contact with that wall surface of the base body 21A which is on the front surface side. This increases the force with which the housing 2 is held by the bar-shaped members 4A and 4B.
(37) (4) The embodiment described above is a connector 100 as an HDMI (registered trademark) Type A receptacle connector. The connector 100 may, however, be an HDMI (registered trademark) connector of a type other than Type A or a connector based on a standard other than HDMI (registered trademark). Further, the connector 100 may alternatively be not a receptacle connector but a plug connector.