# US 7,744,421 B2 · Card connector and method of assembling same

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- Number: US 7,744,421 B2
- Document ID: US7744421B2
- Status: Granted
- Kind: B2
- Application number: 12/166,367
- Filed: 2008-07-02
- Published: 2009-04-30
- Granted: 2010-06-29
- Earliest claimed: 2007-10-29
- Assignees: Fujitsu Component Limited
- Inventors: Keita Harada
- Web page: https://patentgrep.com/patent/US7744421B2

## CPC

- H01R 27/02: for simultaneous co-operation with two or more {dissimilar} counterparts
- H01R 12/57: surface mounting terminals
- H01R 12/712: {co-operating with the surface of the printed circuit or with a coupling device exclusively provided on the surface of the printed circuit (H01R12/72 takes precedence)}
- H01R 12/714: {with contacts abutting directly the printed circuit; Button contacts therefore provided on the printed circuit}
- H01R 43/24: Assembling by moulding on contact members
- H01R: ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS

## Abstract

A card connector is disclosed that includes a first housing configured to have a first card inserted thereinto to be attached thereto; a second housing configured to have a second card inserted thereinto to be attached thereto, the second housing being provided on the first housing; and multiple contact members for the second card combined with the first housing by insert molding, the contact members each having, at a first end, a contact arm part to come into contact with a terminal of the second card, and at a second end, a lead terminal part to be soldered to a pad on a board, wherein the contact arm parts are placed inside the second housing with the intermediate portions thereof fixed to part of the second housing.

## Claims

### Claim 1

A card connector, comprising:
a first housing configured to have a first card inserted thereinto to be attached thereto;
a second housing configured to have a second card inserted thereinto to be attached thereto, the second housing being provided on the first housing, the second housing having a plurality of through holes provided in a part thereof, the through holes each being open at a first end and a second end facing toward each other; and
a plurality of contact members each having, at a first end, a contact arm part to come into contact with a terminal of the second card, and at a second end, a lead terminal part to be soldered to a pad on a board, the contact arm parts each having a bulge part in an intermediate portion thereof, the contact arm parts being placed inside the second housing and penetrating the second housing through the corresponding through holes to have the respective intermediate portions thereof press-fit into the through holes and fixed to the second housing at the through holes and have respective ends thereof projecting from the first ends of the through holes,
wherein the first housing is a single insert molded component having the contact members combined with a housing body of the first housing by insert molding.

### Claim 2 (depends on 1)

The card connector as claimed in claim 1, wherein:
the second card has a plurality of terminals arranged in correspondence to an arrangement of terminals of the first card,
the contact members further include, at the first end, respective additional contact arm parts corresponding to the terminals of the first card, so that the respective contact arm parts branch off from bases of the corresponding additional contact arm parts, and
the contact members have the bases of the additional contact arm parts combined with the housing body of the first housing by the insert molding.

### Claim 3 (depends on 1)

The card connector as claimed in claim 1, wherein:
each of the through holes includes
a first part through which the end of the corresponding contact arm part passes;
a second part into which the bulge part of the corresponding contact arm part is press-fit, the second part being formed at a lower end of the first part; and
a tapered part formed at an entrance of the through hole on a side from which the end of the corresponding arm part passes through the through hole.

### Claim 4 (depends on 1)

The card connector as claimed in claim 1, wherein:
the first housing includes
a plurality of additional contact members combined with the housing body by insert molding; and
a projection part projecting upward from the housing body, the projection part being provided on a side of ends of the additional contact members from which side the first housing is configured to have the first card inserted thereinto.

### Claim 5

A method of assembling a card connector including a first housing and a second housing, comprising the steps of:
forming the first housing by combining a plurality of contact members with a housing body by insert molding, so that the first housing is configured to have a first card inserted thereinto to be attached thereto, the contact members each having, at a first end, a contact arm part to come into contact with a terminal of a second card, and at a second end, a lead terminal part to be soldered to a pad on a board, the contact arm parts each having a bulge part in an intermediate portion thereof;
bending the contact arm parts of the contact members combined with the first housing by insert molding so that the contact arm parts are parallel to a surface of the first housing with ends of the contact arm parts facing a side from which the first card is inserted; and
attaching the second housing having a plurality of through holes each open at a first end and a second end facing toward each other to the first housing by sliding the second housing on the surface of the first housing from the side from which the first card is inserted so that the contact arm parts penetrate the second housing through the corresponding through holes through the first ends of the through holes to have the respective bulge parts thereof press-fit into the through holes and fixed to the second housing at the through holes and have respective ends thereof projecting from the second ends of the through holes and the second housing is engaged with and fixed onto the first housing, the second housing being configured to have the second card inserted thereinto to be attached thereto.

### Claim 6 (depends on 5)

The method as claimed in claim 5, wherein:
the second card has a plurality of terminals arranged in correspondence to an arrangement of terminals of the first card,
the contact members further include, at the first end, respective additional contact arm parts corresponding to the terminals of the first card, so that the respective contact arm parts branch off from bases of the corresponding additional contact arm parts, and
said step of combining combines the bases of the additional contact arm parts with the housing body of the first housing by the insert molding.

### Claim 7 (depends on 5)

The method as claimed in claim 5, wherein:
said step of bending bends the contact arm parts at a first angle slightly shallower than a second angle at which the contact arm parts are parallel to the surface of the first housing, and
said step of attaching is performed with the contact arm parts being held using a jig so as to be aligned and parallel to the surface of the first housing.

### Claim 8

A card connector, comprising:
a housing configured to have a card attached thereto;
a metal cover member covering the housing; and
a detection switch configured to detect the attachment of the card to the housing, the detection switch including a movable terminal configured to be pressed by the attached card to be elastically bent and a fixed terminal formed as part of the metal cover member and spaced away from and facing the movable terminal,
wherein the movable terminal includes an arm part configured to be pressed by the attached card to be elastically bent and a contact part extending from the arm part in a direction in which the arm part is bent,
the fixed terminal is shaped so as to be rubbed by the contact part in response to the bending of the arm part, and
the contact part is configured to be displaced in the direction in which the arm part is bent so as to come into contact with and rub the fixed terminal in response to the bending of the arm part.

### Claim 9

A card connector, comprising:
a housing configured to have a card attached thereto; and
a detection switch configured to detect the attachment of the card to the housing, the detection switch including a movable terminal configured to be pressed by the attached card to be elastically bent and a fixed terminal spaced away from and facing the movable terminal,
wherein the movable terminal includes an arm part configured to be pressed by the attached card to be elastically bent and a contact part extending from the arm part in a direction in which the arm part is bent,
the fixed terminal is shaped so as to be rubbed by the contact part in response to the bending of the arm part,
the contact part is configured to be displaced in the direction in which the arm part is bent so as to come into contact with and rub the fixed terminal in response to the bending of the arm part,
the contact part is formed by bending a lead branching off from the arm part,
the fixed terminal includes a lug part formed in correspondence to the lead by cutting and raising a part of a side plate part of a metal cover member covering the housing, and
the lead is configured to come into contact with and rub the lug part in response to the bending of the arm part.

### Claim 10 (depends on 9)

The card connector as claimed in claim 9, wherein:
the lug part is inclined with respect to the direction in which the contact part is displaced so that a contact pressure of an end of the lead on the lug part increases as the end of the lead moves in rubbing contact with the lug part.

### Claim 11

A card connector, comprising:
a housing configured to have a card attached thereto; and
a detection switch configured to detect the attachment of the card to the housing, the detection switch including a movable terminal configured to be pressed by the attached card to be elastically bent and a fixed terminal spaced away from and facing the movable terminal,
wherein the movable terminal includes an arm part configured to be pressed by the attached card to be elastically bent and a contact part extending from the arm part in a direction in which the arm part is bent,
the fixed terminal is shaped so as to be rubbed by the contact part in response to the bending of the arm part,
the contact part is configured to be displaced in the direction in which the arm part is bent so as to come into contact with and rub the fixed terminal in response to the bending of the arm part,
the contact part is formed by bending a pair of leads branching off from the arm part, so as to have a horseshoe shape in a view from an end side of the arm part,
the fixed terminal includes a pair of lug parts formed in correspondence to the leads by cutting and raising a part of a side plate part of a metal cover member covering the housing, and
the leads are configured to come into contact with and rub the corresponding lug parts so as to hold the fixed terminal therebetween in response to the bending of the arm part.

### Claim 12 (depends on 11)

The card connector as claimed in claim 11, wherein:
the lug parts are inclined away from each other with respect to the direction in which the contact part is displaced, so that a contact pressure of an end of each of the leads on the corresponding lug part increases as the end of each of the leads moves in rubbing contact with the corresponding lug part.

### Claim 13 (depends on 11)

The card connector as claimed in claim 11, further comprising:
a positioning part configured to determine a position of the contact part by being fit to the contact part.

### Claim 14

A card connector, comprising:
a housing configured to have a card attached thereto; and
a detection switch configured to detect the attachment of the card to the housing, the detection switch including a movable terminal configured to be pressed by the attached card to be elastically bent and a fixed terminal spaced away from and facing the movable terminal,
wherein the movable terminal includes an arm part configured to be pressed by the attached card to be elastically bent and a contact part extending from the arm part in a direction in which the arm part is bent,
the fixed terminal is shaped so as to be rubbed by the contact part in response to the bending of the arm part,
the contact part is configured to be displaced in the direction in which the arm part is bent so as to come into contact with and rub the fixed terminal in response to the bending of the arm part,
the contact part is formed by bending a pair of leads branching off from the arm part so as to have a triangular shape narrowing toward ends of the leads in a view from an end side of the arm part,
the fixed terminal includes a single lug part formed in correspondence to the leads by cutting a part of a side plate part of a metal cover member covering the housing and raising the part toward an inside of the card connector, and
the leads are configured to have a gap between the respective ends widening so as to come into contact with and rub corresponding surfaces of the lug part and hold the lug part therebetween in response to the bending of the arm part.

### Claim 15 (depends on 14)

The card connector as claimed in claim 14, further comprising a positioning part configured to determine a position of the contact part by being fit to the gap between the ends of the leads.

### Claim 16

A card connector, comprising:
a housing configured to have a card attached thereto;
a detection switch configured to detect the attachment of the card to the housing, the detection switch including a movable terminal configured to be pressed by the attached card to be elastically bent and a fixed terminal spaced away from and facing the movable terminal; and
a guide part,
wherein the movable terminal includes an arm part configured to be pressed by the attached card to be elastically bent and a contact part extending from the arm part in a direction in which the arm part is bent,
the fixed terminal is shaped so as to be rubbed by the contact part in response to the bending of the arm part,
the contact part is configured to be displaced in the direction in which the arm part is bent so as to come into contact with and rub the fixed terminal in response to the bending of the arm part,
the contact part is formed by bending a pair of leads branching off from the arm part, so as to have a horseshoe shape in a view from an end side of the arm part,
the fixed terminal includes a pair of lug parts formed in correspondence to the leads by cutting and raising a part of a side plate part of a metal cover member covering the housing,
the guide part is configured to guide exterior surfaces of the bent leads so as to deform the leads in a direction to narrow a gap therebetween toward an end side thereof in response to the displacement of the contact part, and
the leads are configured to be deformed in the direction to narrow the gap therebetween toward the end side thereof by the guide part so as to come into contact with and rub the corresponding lug parts and hold the fixed terminal therebetween in response to the bending of the arm part.

### Claim 17

A card connector, comprising:
a housing configured to have a card attached thereto;
a detection switch configured to detect the attachment of the card to the housing, the detection switch including a movable terminal configured to be pressed by the attached card to be elastically bent and a fixed terminal spaced away from and facing the movable terminal; and
an additional detection switch configured to detect a write-enable state of the attached card, the detection switch including an additional movable terminal configured to be pressed by the attached card to be elastically bent and an additional fixed terminal spaced away from and facing the additional movable terminal,
wherein the movable terminal includes an arm part configured to be pressed by the attached card to be elastically bent and a contact part extending from the arm part in a direction in which the arm part is bent,
the fixed terminal is shaped so as to be rubbed by the contact part in response to the bending of the arm part,
the contact part is configured to be displaced in the direction in which the arm part is bent so as to come into contact with and rub the fixed terminal in response to the bending of the aim part, and
the detection switch and the additional detection switch are arranged so as to face a same surface of the attached card.