CN105633717A - Card connector - Google Patents

Abstract

The invention discloses a card connector for inserting an electronic card, and the card connector includes a base and a plurality of terminals. Each terminal includes a contact portion for making electrical contact with an inserted electronic card; and a pair of elastic arms respectively extending from the base and intersecting the contact portion, the pair of elastic arms being suitable for making the contact portion elastic in the up and down direction displacement. Each elastic arm is formed with a smooth surface extending to the contact portion; and a pair of elastic arms are located on both sides of the vertical plane parallel to the plugging direction of the electronic card and passing through the contact portion, so that when the electronic card is plugged and pulled, the electronic The card is in sliding contact with the smooth surface of the resilient arm. Therefore, when the electronic card is inserted and pulled out, the electronic card slides to or leaves the contact part under the guidance of the smooth surface of the elastic arm, thereby avoiding the contact between the electronic card and the sharp outer edge of the elastic arm, and effectively preventing the electronic card from being damaged by the terminal. Edges wear and tear, prolonging the life of the electronic card.

Description

card connector

technical field

The invention relates to a card connector for plugging in an electronic card, in particular to a card connector which can prevent the electronic card from being worn by the terminals of the card connector when plugging and pulling out.

Background technique

In the prior art, a card connector generally includes a base and a plurality of terminals held in the base, and each terminal has a contact portion at the top end for making electrical contact with an inserted electronic card.

In the prior art, there are two ways of plugging and unplugging electronic cards: one is vertical insertion, that is, the electronic card is inserted into the connector or pulled out from the connector along its longitudinal direction; the other is horizontal insertion, that is, the electronic card is inserted along the It is plugged into or unplugged from the connector in a lateral orientation. In the connector suitable for inserting the electronic card horizontally, the extending direction of the terminals of the connector and the plugging and pulling out direction of the electronic card form an included angle greater than zero and less than 90 degrees.

In the prior art, in a connector suitable for inserting an electronic card horizontally, each terminal of the connector includes a pair of elastic arms extending from the base and intersecting the contact portion, and the pair of elastic arms are located perpendicular to the side of the electronic card. Both sides of the vertical plane in the plugging direction and passing through the contact part. This makes the electronic card or the tray containing the electronic card contact the outer edge of the elastic arm of the terminal of the card connector when the electronic card is inserted or pulled out, and then move to or away from the contact portion under the guidance of the outer edge of the elastic arm.

In the prior art, since the outer edge of the elastic arm is relatively sharp, when the electronic card is in contact with the sharp outer edge, the electronic card is easily scratched by the sharp outer edge, which will cause damage to the electronic card, or even damage the electronic card. Short circuit problem.

Contents of the invention

The purpose of the present invention is to solve at least one aspect of the above-mentioned problems and deficiencies in the prior art.

The invention provides a card connector, which can effectively prevent an electronic card or a card support of the electronic card from being scratched by terminals of the card connector when plugged in or pulled out.

The invention also provides a card connector, which can effectively prevent the terminal of the card connector from being damaged when the electronic card or the card holder of the electronic card is inserted and pulled out.

According to one aspect of the present invention, there is provided a card connector for inserting an electronic card, the card connector comprising: a base; and a plurality of terminals arranged on the base. Each of the terminals includes: a contact portion for making electrical contact with the inserted electronic card; and a pair of elastic arms respectively extending from the base and intersecting the contact portion, the pair of elastic arms are adapted to In order to make the contact portion elastically displace in the up and down direction. Wherein, the pair of elastic arms are located on both sides of a vertical plane that is parallel to the insertion and removal direction of the electronic card and passes through the contact portion, and each of the terminals also includes an extending arm portion that extends from the contact The portion extends a predetermined length in a direction away from the pair of elastic arms.

According to an embodiment of the present invention, the free end of the extension arm is lower than the top surface of the base, and when the electronic card is inserted or removed, the free end of the extension arm is slidably supported on a support superior.

According to another embodiment of the present invention, each of the elastic arms is formed with a smooth surface extending to the contact portion, so that when the electronic card is inserted or pulled out, the electronic card is in sliding contact with the smooth surface of the elastic arm .

According to another embodiment of the present invention, each of the elastic arms includes: a fixed arm portion fixed to the base and extending along a path away from the contact portion; and a guiding arm portion connected to the fixed arm portion And extend from the fixed arm part to the contact part.

According to another embodiment of the present invention, each of the guiding arm portions is formed with a smooth surface extending to the contact portion for smoothly guiding the electronic card to/from the contact portion.

According to another embodiment of the present invention, said pair of elastic arms of each said terminal form a substantially "W"-shaped pattern.

According to another embodiment of the present invention, the two guiding arms of each terminal form an included angle greater than 0 degrees and less than 90 degrees with the vertical plane.

According to another embodiment of the present invention, the two guiding arm portions of each terminal form an included angle greater than 0 degrees and less than 45 degrees with the vertical plane.

According to another embodiment of the present invention, the two guiding arm portions of each terminal form an angle greater than 10 degrees and less than 30 degrees with the vertical plane.

According to another embodiment of the present invention, the support member is a circuit board for mounting the card connector, and when the electronic card is plugged in, the free end of the extension arm is slidably supported on the circuit board. board.

According to another embodiment of the present invention, the support member is an independent component installed on the circuit board, and the free end of the extension arm is slidably supported on the independent component when the electronic card is plugged in and pulled out. .

According to another embodiment of the present invention, the support member has a slideway, and when the electronic card is plugged in or out, the free end of the extension arm moves along the slideway of the support member.

According to another embodiment of the present invention, when the electronic card is inserted and removed, the free end of the extension arm slides back and forth along the insertion and removal direction of the electronic card.

According to another embodiment of the present invention, the guiding arm portion and the extending arm portion of each terminal are located on both sides of a straight line passing through the contact portion and perpendicular to the insertion and extraction direction of the electronic card, so that each terminal The guide arm and the extension arm form a generally inverted "Y" shaped pattern.

According to another embodiment of the present invention, the extending arm portion is formed with a smooth surface extending to the contact portion, so as to smoothly guide the electronic card to/from the contact portion.

According to another embodiment of the present invention, the plurality of terminals are arranged in at least two rows, and each row of terminals includes at least two terminals arranged along the insertion and extraction direction of the electronic card.

According to another embodiment of the present invention, the extending arm portion of the rear terminal among the two adjacent terminals in each row of terminals is arranged in the gap between the pair of guiding arm portions of the preceding terminal.

According to another embodiment of the present invention, each of said terminals has a symmetrical structure.

According to another embodiment of the present invention, the guiding arm portion of each elastic arm forms an included angle with the top surface of the base that is greater than 0 degrees and less than 90 degrees.

According to another embodiment of the present invention, the guiding arm portion of each elastic arm forms an included angle with the top surface of the base that is greater than 30 degrees and less than 60 degrees.

According to another embodiment of the present invention, the guiding arm portion of each elastic arm forms an angle greater than 35 degrees and less than 45 degrees with the top surface of the base.

According to another embodiment of the present invention, each of the extension arm parts forms an angle greater than 0 degrees and less than 90 degrees with the top surface of the base.

According to another embodiment of the present invention, each of the extension arm parts forms an angle greater than 30 degrees and less than 60 degrees with the top surface of the base.

According to another embodiment of the present invention, each of the extension arm parts forms an angle greater than 35 degrees and less than 45 degrees with the top surface of the base.

According to another embodiment of the present invention, each of the fixing arms is substantially parallel to the top surface of the base.

According to another embodiment of the present invention, the card connector is a connector for inserting a SIM card.

In each of the above-mentioned embodiments of the present invention, since the pair of elastic arms of each terminal are located on both sides of the vertical plane parallel to the insertion and extraction direction of the electronic card and passing through the contact portion, when the electronic card is inserted and extracted, , the electronic card is in contact with the smooth top surface of the elastic arm, and slides to or leaves the contact part under the guidance of the smooth top surface, thereby avoiding the contact between the electronic card and the sharp outer edge of the elastic arm, thereby effectively preventing The electronic card is worn by the edge of the terminal, which prolongs the service life of the electronic card.

Furthermore, in one embodiment of the present invention, each elastic arm includes a fixed arm portion fixed to the base and extending along a path away from the contact portion, therefore, the path length of each elastic arm is lengthened, thereby increasing the length of the elastic arm. The flexibility, which can effectively prevent the terminals from yielding due to excessive positive force when the electronic card is plugged and pulled out.

In addition, in another embodiment of the present invention, each terminal further includes an extension arm portion connected to the contact portion and extending a predetermined length from the contact portion, and the free end of the extension arm portion is slidably supported when the electronic card is plugged in or out. on one support, thereby improving the anti-collapse performance of the entire terminal.

Other objects and advantages of the present invention will be apparent from the following description of the present invention with reference to the accompanying drawings, and may help to provide a comprehensive understanding of the present invention.

Description of drawings

FIG. 1 shows a schematic perspective view of a card connector according to an embodiment of the present invention, wherein only a base and a plurality of terminals held on the base are shown;

Figure 2 shows a schematic diagram of an electronic card inserted into the card connector shown in Figure 1; and

FIG. 3 shows a top plan view of the base of the card connector of FIG. 1 and a plurality of terminals retained on the base.

detailed description

The technical solutions of the present invention will be further specifically described below through the embodiments and in conjunction with the accompanying drawings. In the specification, the same or similar reference numerals designate the same or similar components. The following description of the embodiments of the present invention with reference to the accompanying drawings is intended to explain the general inventive concept of the present invention, but should not be construed as a limitation of the present invention.

According to a general technical idea of the present invention, there is provided a card connector for inserting an electronic card, the card connector comprising: a base; and a plurality of terminals arranged on the base. Each of the terminals includes: a contact portion for making electrical contact with the inserted electronic card; and a pair of elastic arms respectively extending from the base and intersecting the contact portion, the pair of elastic arms are adapted to In order to make the contact portion elastically displace in the up and down direction. Wherein, the pair of elastic arms are located on both sides of a vertical plane that is parallel to the insertion and removal direction of the electronic card and passes through the contact portion, and each of the terminals also includes an extending arm portion that extends from the contact The portion extends a predetermined length in a direction away from the pair of elastic arms.

FIG. 1 shows a schematic perspective view of a card connector according to an embodiment of the present invention, wherein only a base 100 and a plurality of terminals 200 held on the base 100 are shown. FIG. 2 shows a schematic diagram of inserting an electronic card 300 into the card connector shown in FIG. 1 .

In one embodiment of the present invention, a card connector for inserting an electronic card is disclosed. As shown in FIG. 1 and FIG. A terminal 200, and a shielding case (not shown) for accommodating the base 100. When the electronic card 300 is inserted into the shielding case of the card connector, the electronic card 300 is in electrical contact with the plurality of terminals 200, respectively.

As shown in FIGS. 1 and 2 , in the illustrated embodiment, each terminal 200 includes a contact portion 230 and a pair of elastic arms 210 , 220 . The contact portion 230 is higher than the top surface of the base 100 for making electrical contact with the electronic card 300 inserted into the card connector. A pair of elastic arms 210 , 220 are respectively fixed to the base 100 and respectively extend from the base 100 to the contact portion 230 , where the pair of elastic arms 210 , 220 intersect.

In one embodiment of the present invention, as shown clearly in FIG. 1 , each elastic arm 210, 220 is formed with a smooth surface (smooth top surface) extending to the contact portion 230, which can be used for pressing the elastic arm. The smooth rolling surface formed at 210 and 220.

Please continue to refer to FIG. 1 , in one embodiment of the present invention, a pair of elastic arms 210 , 220 of each terminal 200 are located on two sides of a vertical plane P that is parallel to the plugging direction Y of the electronic card 300 and passes through the contact portion 230 . side. Like this, as shown in Figure 1, when inserting and pulling out the electronic card 300, the electronic card 300 can directly contact with the smooth surface of elastic arm 210,220 sliding contact, like this, electronic card 300 can be guided by the smooth surface of elastic arm 210,220 Sliding down to or away from the contact portion 230 without touching the outer edges of the elastic arms 210 , 220 can effectively prevent the electronic card 300 from being worn by the sharp outer edges of the terminals and prolong the service life of the electronic card 300 .

As shown in FIG. 1 , in one embodiment of the present invention, each elastic arm 210 , 220 includes a fixed arm portion 211 , 221 and a guiding arm portion 212 , 222 . The fixing arms 211 , 221 are fixed to the base 100 and extend along a path away from the contact portion 230 . In the illustrated embodiment, the fixing arms 211 , 221 extend toward the outside of the contact portion 230 . The guide arm portion 212 , 222 is connected to the fixed arm portion 211 , 221 and extends from the fixed arm portion 211 , 221 to the contact portion 230 .

In the illustrated embodiment, since each elastic arm 210, 220 includes a fixed arm portion 211, 221 fixed to the base 100 and extending along a path away from the contact portion 230, the path of each elastic arm 210, 220 The length is lengthened, thereby increasing the flexibility of the elastic arms 210, 220, which can effectively prevent the terminals from yielding due to excessive positive force when the electronic card is inserted or removed.

As shown in FIG. 1 , in one embodiment of the present invention, each guiding arm portion 212, 222 is formed with a smooth surface extending to the contact portion 230 for smoothly guiding the electronic card 300 to/from the contact portion 230 .

FIG. 3 shows a top plan view of the base 100 of the card connector of FIG. 1 and a plurality of terminals 200 held on the base 100 .

In the top view shown in FIG. 3 , it can be clearly seen that the pair of elastic arms 210 , 220 of each terminal 200 form a substantially "W"-shaped pattern. That is, the two fixing arm portions 211 , 221 and the two guiding arm portions 212 , 222 of each terminal 200 together form a substantially “W”-shaped pattern.

In one embodiment of the present invention, as shown in FIG. 1 and FIG. 3 , a guiding arm portion 212 of each terminal 200 forms an included angle α greater than 0 degrees and less than 90 degrees with the vertical plane P, and each terminal 200 The other guiding arm portion 222 forms an included angle β with the vertical plane P greater than 0° and less than 90°. In the illustrated embodiment, the angle α between one guiding arm portion 212 and the vertical plane P is equal to the angle β between the other guiding arm portion 222 and the vertical plane P. As shown in FIG. However, the present invention is not limited to the illustrated embodiment, and the angle α between one guiding arm portion 212 and the vertical plane P may be smaller or smaller than the angle β between the other guiding arm portion 222 and the vertical plane P.

In another embodiment of the present invention, the two guiding arm portions 212 , 222 of each terminal 200 form angles α, β with the vertical plane P greater than 0° and less than 45°. Preferably, the two guiding arm portions 212 , 222 of each terminal 200 form angles α, β with the vertical plane P greater than 10 degrees and less than 30 degrees.

As shown in FIGS. 1 and 3 , in one embodiment of the present invention, each terminal 200 further includes an extension arm portion 240 connected to the contact portion 230 and extending from the contact portion 230 by a predetermined length. The extension arm portion 240 extends obliquely downward and forward from the contact portion 230 such that a free end of the extension arm portion 240 is lower than the top surface of the base 100 . In this way, when the electronic card 300 is inserted and removed, the free end of the extension arm portion 240 is slidably supported on a supporting member. In this way, when the electronic card 300 is inserted or removed, the extension arm portion 240 is transformed into a simply supported beam for sliding support, which can provide additional support for the entire terminal, thereby improving the anti-collapse performance of the entire terminal.

Although not shown in the figure, in one embodiment of the present invention, when the electronic card 300 is inserted and removed, the free end of the extension arm portion 240 can be directly slidably supported on the circuit board or an independent component installed on the circuit board.

In another embodiment of the present invention, a slideway may be formed on the support for supporting the extension arm portion 240, so that when the electronic card 300 is plugged in or out, the free end of the extension arm portion 240 can move along the side of the support member. The slide moves.

In one embodiment of the present invention, when the electronic card 300 is plugged and pulled out, the free end of the extension arm portion 240 slides back and forth along the plugging and pulling direction Y of the electronic card 300 . In order to prevent the free end of the extension arm part 240 from wearing the support, the outer surface of the free end of the extension arm part 240 may be formed into a smooth arc.

In one embodiment of the present invention, as shown in FIG. 3 , the guiding arm portions 212, 222 and the extending arm portion 240 of each terminal 200 are located on the line L passing through the contact portion 230 and perpendicular to the insertion and extraction direction Y of the electronic card. On both sides, this causes the guide arms 212, 222 and extension arms 240 of each terminal 200 to form a generally inverted "Y" shaped pattern. As can be clearly seen in the top view shown in FIG. 3 , the two guide arms 212 , 222 and one extension arm 240 of each terminal together form a generally inverted "Y" pattern.

In one embodiment of the present invention, as shown in FIG. 1 , a smooth surface extending to the contact portion 230 is formed on the extension arm portion 240 so as to guide the electronic card 300 to/from the contact portion 230 smoothly, thereby reducing the impact on the contact portion 230. Electronic card 300 wear.

In one embodiment of the present invention, the plurality of terminals 200 are arranged in at least two rows, and each row of terminals 200 includes at least two terminals 200 arranged along the plugging direction Y of the electronic card 300 . As shown in FIG. 1 and FIG. 3 , in the illustrated embodiment, a plurality of terminals 200 are arranged in two rows, and each row of terminals 200 includes three terminals 200 arranged along the insertion and extraction direction Y of the electronic card 300 .

As shown in FIGS. 1 and 3 , in the illustrated embodiment, the extension arm portion 240 of the rear terminal 200 of the two adjacent terminals 200 in each row of terminals 200 is arranged in front of the front terminal. In the gap between the pair of guide arm parts 213 and 223 of 200, the limited space can be fully utilized, the arrangement density of the terminals can be improved, and the size of the entire card connector can be reduced.

In one embodiment of the present invention, as shown in FIGS. 1 and 3 , each terminal 200 has a symmetrical structure. However, the present invention is not limited to the illustrated embodiment, and each terminal 200 may also have an asymmetric structure. For example, one guide arm 212 may be larger or smaller than the other guide arm 222 .

In the illustrated embodiment, the top surface of the base 100 is a horizontal plane perpendicular to the vertical plane P. As shown in FIG.

As shown in FIG. 1 , in one embodiment of the present invention, the guiding arm portion 212 , 222 of each elastic arm 210 , 220 forms an angle greater than 0 degrees and less than 90 degrees with the top surface of the base 100 .

In another embodiment of the present invention, the guiding arm portion 212 , 222 of each elastic arm 210 , 220 forms an angle greater than 30 degrees and less than 60 degrees with the top surface of the base 100 . Preferably, the guiding arm portion 212 , 222 of each elastic arm 210 , 220 forms an angle greater than 35 degrees and less than 45 degrees with the top surface of the base 100 .

As shown in FIG. 1 , in one embodiment of the present invention, each extending arm portion 240 forms an angle greater than 0 degrees and less than 90 degrees with the top surface of the base 100 .

In another embodiment of the present invention, each extending arm portion 240 forms an angle greater than 30 degrees and less than 60 degrees with the top surface of the base 100 . Preferably, each extending arm portion 240 forms an angle greater than 35 degrees and less than 45 degrees with the top surface of the base 100 .

As shown in FIG. 1 , in one embodiment of the present invention, each fixing arm portion 211 , 221 is substantially parallel to the top surface of the base 100 .

In one embodiment of the present invention, the card connector may be a card connector for inserting a SIM card or other electronic cards.

Those skilled in the art can understand that the above-described embodiments are exemplary, and those skilled in the art can improve them, and the structures described in various embodiments do not conflict with each other in terms of structure or principle Can be combined freely.

Although the present invention has been described with reference to the accompanying drawings, the embodiments disclosed in the accompanying drawings are intended to illustrate preferred embodiments of the present invention and should not be construed as a limitation of the present invention.

While certain embodiments of the present general inventive concept have been shown and described, it will be understood by those of ordinary skill in the art that changes may be made to these embodiments without departing from the principles and spirit of the present general inventive concept. The scope is defined by the claims and their equivalents.

It should be noted that the word "comprising" does not exclude other elements or steps, and the word "a" or "an" does not exclude a plurality. Furthermore, any element references in the claims should not be construed as limiting the scope of the invention.

Claims (26)

1. A card connector for inserting an electronic card (300), the card connector comprising: a base (100); and a plurality of terminals (200), arranged on the base (10), Each of said terminals (200) includes: a contact portion (230) for electrical contact with said electronic card (300) inserted; and A pair of elastic arms (210, 220), respectively extending from the base (100) and intersecting with the contact portion (230), the pair of elastic arms (210, 220) are adapted to make the contact portion vertically upper elastic displacement, It is characterized by: The pair of elastic arms (210, 220) are located on both sides of a vertical plane (P) parallel to the plugging direction (Y) of the electronic card (300) and passing through the contact portion (230), and Each of the terminals (200) further includes an extension arm portion (240) extending a predetermined length from the contact portion (230) in a direction away from the pair of elastic arms (210, 220). 2. The card connector according to claim 1, characterized in that, The free end of the extension arm (240) is lower than the top surface of the base (100), and when the electronic card (300) is plugged in or out, the free end of the extension arm (240) is slidably supported on a support. 3. The card connector according to claim 1, characterized in that, Each of the elastic arms (210, 220) is formed with a smooth surface extending to the contact portion (230), so that when the electronic card (300) is plugged in, the electronic card (300) and the elastic arm The smooth surfaces of (210, 220) are in sliding contact. 4. The card connector according to any one of claims 1-3, characterized in that, each of said elastic arms (210, 220) comprises: fixed arms (211, 221) fixed to said base (100) and extending along a path away from said contact portion (230); and A guide arm (212, 222) is connected to the fixed arm (211, 221) and extends from the fixed arm (211, 221) to the contact part (230). 5. The card connector according to claim 4, characterized in that: Each of the guiding arm parts (212, 222) is formed with a smooth surface extending to the contact part (230) for smoothly guiding the electronic card (300) to/from the contact part (230) ). 6. The card connector according to claim 4, characterized in that: Said pair of resilient arms (210, 220) of each said terminal (200) form a generally "W" shaped pattern. 7. The card connector according to claim 4, characterized in that: The two guiding arm portions (212, 222) of each terminal (200) form an included angle (α, β) with the vertical plane (P) greater than 0° and less than 90°. 8. The card connector according to claim 7, characterized in that: The two guiding arm portions (212, 222) of each terminal (200) form an included angle (α, β) with the vertical plane (P) greater than 0° and less than 45°. 9. The card connector according to claim 8, characterized in that: The two guiding arm portions (212, 222) of each terminal (200) form an included angle (α, β) greater than 10 degrees and less than 30 degrees with the vertical plane (P). 10. The card connector according to claim 4, characterized in that, The supporting member is a circuit board for installing the card connector, and when the electronic card (300) is plugged and pulled out, the free end of the extension arm part (240) is slidably supported on the circuit board. 11. The card connector according to claim 4, characterized in that, The support member is an independent component installed on the circuit board, and when the electronic card (300) is plugged in and pulled out, the free end of the extension arm portion (240) is slidably supported on the independent component. 12. The card connector according to claim 4, characterized in that, The support has a slideway, and when the electronic card (300) is plugged in and pulled out, the free end of the extension arm part (240) moves along the slideway of the support. 13. The card connector according to claim 4, characterized in that, When the electronic card (300) is inserted and removed, the free end of the extension arm portion (240) slides back and forth along the insertion and extraction direction (Y) of the electronic card (300). 14. The card connector according to claim 4, characterized in that: The guide arm portion (212, 222) and the extension arm portion (240) of each terminal (200) are located on a straight line ( L) such that the guide arms (212, 222) and extension arms (240) of each terminal (200) form a substantially inverted "Y" pattern. 15. The card connector according to claim 4, characterized in that: A smooth surface extending to the contact part (230) is formed on the extension arm part (240) so as to smoothly guide the electronic card (300) to/from the contact part (230). 16. The card connector according to claim 4, characterized in that: The plurality of terminals (200) are arranged in at least two rows, and each row of terminals (200) includes at least two terminals (200) arranged along the insertion and extraction direction (Y) of the electronic card (300). 17. The card connector according to claim 16, characterized in that: Among the two adjacent terminals (200) in each row of terminals (200), the extending arm portion (240) of the rear terminal (200) is arranged on a pair of guiding arm portions of the preceding terminal (200). In the gap between (213, 223). 18. The card connector according to claim 4, characterized in that each of said terminals (200) has a symmetrical structure. 19. The card connector of claim 4, wherein: The guiding arm portion (212, 222) of each elastic arm (210, 220) forms an included angle with the top surface of the base (100) greater than 0° and less than 90°. 20. The card connector of claim 19, wherein: The guiding arm portion (212, 222) of each elastic arm (210, 220) forms an included angle with the top surface of the base (100) greater than 30 degrees and less than 60 degrees. 21. The card connector of claim 20, wherein: The guiding arm portion (212, 222) of each elastic arm (210, 220) forms an angle greater than 35 degrees and less than 45 degrees with the top surface of the base (100). 22. The card connector of claim 4, wherein: Each of the extension arm parts (240) forms an included angle greater than 0 degrees and less than 90 degrees with the top surface of the base (100). 23. The card connector of claim 22, wherein: Each of the extension arm parts (240) forms an angle greater than 30 degrees and less than 60 degrees with the top surface of the base (100). 24. The card connector of claim 23, wherein: Each of the extension arm parts (240) forms an angle greater than 35 degrees and less than 45 degrees with the top surface of the base (100). 25. The card connector of claim 4, wherein: Each of the fixing arms (211, 221) is substantially parallel to the top surface of the base (100). 26. The card connector according to claim 1, wherein the card connector is a connector for inserting a SIM card.