JP4596825B2 - Memory card socket - Google Patents

Description

  The present invention relates to a socket for removably connecting a memory card such as an SD memory card.

  Conventionally, various types of memory card sockets (hereinafter abbreviated as sockets) for connecting a memory card and a circuit board are known (see Patent Document 1). An example of this type of socket will be described with reference to FIGS. The socket A is used for a memory card B such as a miniSD memory card, and includes a housing 1 composed of a metal base shell 2 and a metal shell 3, a slider 4 for holding the memory card B to be inserted and removed, and the slider. 4 includes a coil spring 5 that urges 4 forward, a terminal plate block 7 having a plurality of contacts 6 held by the base shell 2, and a lock pin 8 for locking the slider 4. The housing 1 is formed by fitting the shell 3 to the base shell 2 that holds the slider 4, the coil spring 5, the terminal plate block 7, and the like.

  The slider 4 is movably disposed along the inner surfaces of the left and right side walls 2 a and 2 b of the base shell 2, and side walls 4 c and 4 d for guiding the memory card B are provided on the left and right sides of the slider 4. Stoppers 2c and 2d for preventing the slider 4 from coming off are provided at the front end portions of the left and right side walls 2a and 2b of the base shell 2. The front ends of the side walls 4c and 4d of the slider 4 are in contact with the stoppers 2c and 2d, respectively, thereby preventing the slider 4 from coming off.

  The memory card B has a cut portion 10 on one side near the front end, and both side walls 4c and 4d of the slider 4 for guiding the memory card B have a shape corresponding to the cut portion 10. When the memory card B is inserted from the front opening 9 of the socket A, the slider 4 is pushed by the memory card B into which the memory card B is inserted. When the insertion force is released at a predetermined position where the provided connection terminal 12 (see FIG. 11) is in contact with the contact 6 through the window portion 4a of the slider 4, the coil spring 5 is biased and the shaft portion of the lock pin 8 is engaged. The slider 4 is locked.

When removing the memory card B inserted into the socket A, the memory card B is once pushed in the insertion direction (backward), and the engagement state of the shaft portion of the lock pin 8 is released by a known cam mechanism. When the force to push the memory card B is lost, the slider 4 moves forward by the biasing force of the coil spring 5 and pushes out the memory card B.
JP 2004-87298 A

  By the way, in this type of memory card socket A, a problem occurs when the memory card B is inserted into the front opening 9 of the socket A at an angle. This is shown in FIGS. 11 (a) and 11 (b). FIG. 11A shows a state in which the memory card B starts to be inserted obliquely, and FIG. 11B shows a state in which the memory card B is pushed in a little more. Tapered 4e and 4f for guiding the memory card are provided at the front ends of the side walls 4c and 4d of the slider 4 having an inner width D substantially equal to the width of the memory card B, and the front opening 9 of the socket A (see FIG. 1). The stoppers 2c and 2d located at the left and right ends of the taper are located on the left and right outer sides of the tapers 4e and 4f. Accordingly, the inner width of the stoppers 2c and 2d is considerably larger than the width of the memory card B. The memory card B has a notch 10 for preventing reverse insertion with the left front corner dropped. For this reason, as shown in FIG. 11A, the memory card B may be inserted with a large inclination with respect to the front opening 9 in some cases.

  When the memory card B is pushed in this state, the abutting portion 4g (projecting corresponding to the notch portion 10) on the side wall of the slider 4 is pushed at the left front end of the memory card B, so that it is shown in FIG. Until the state, the memory card B is inserted while moving the slider 4. Thick portions 11 (shaded portions) are provided on both sides of the group of connection terminals 12 on the back surface of the memory card so that the contact with the contact 6 of the connection terminal can be smoothly performed. If it will be in the state shown in FIG.11 (b), the thick part 11 will collide with the contact 6, and the malfunction that the contact 6 will deform | transform will arise. Furthermore, when the slider 4 is pushed a little further, the lock is applied, and even if the memory card B is removed, the lock state is established. In addition, there is a possibility that a trouble may occur that the side surface of the memory card B is caught by the stoppers 2c and 2d and the card cannot be removed.

  The present invention has been made in view of the above-described problems, and prevents the memory card from being inclined and pushed in a simple configuration without increasing the number of parts, and the contact is deformed. An object of the present invention is to provide a memory card socket that can prevent the slider from being inadvertently locked.

In order to achieve the above object, the invention of claim 1 is formed in a flat box shape with one side opening, a housing into which a memory card is slid and inserted through the opening, and held by the housing, A terminal plate block having a plurality of contacts that are electrically connected to the conductive pattern and in contact with the connection terminals provided on the memory card, and holds the memory card that is urged forward by a spring in the housing and inserted and removed. In the memory card socket having a slider that slides, the memory card has a notch for preventing reverse insertion by dropping one side near the front end, and a connection terminal is provided on the back side near the front end. The base shell is composed of a shell and a base shell that are attached to each other. A stopper that is extended inward and is provided integrally with a stopper for preventing the slider from coming off, and the slider has both side walls having an inner width substantially the same as the width of the memory card, and is provided at the opening end side of both side walls. A guide taper is formed, and both side walls thereof have a shape corresponding to the outer shape including the notch portion of the memory card, and a window is provided at a position facing the connection terminal disposed on the back surface of the held memory card. The stopper is extended to a width equivalent to the inner width of the slider, and the tip side of the stopper is bent inward so as to follow the inlet guide taper of the slider. Is.

  According to the first aspect of the present invention, even if the memory card is inserted into the opening in a state of being largely inclined, the opening end has a stopper extended to a width equal to the inner width of the slider, The memory card cannot be inserted because it is bent inward so as to follow the entrance guide taper of the slider. For this reason, it is possible to prevent the memory card from being inserted while being largely inclined and deforming the contact. In addition, the slider is not inadvertently locked by being pushed in while the memory card is tilted. Furthermore, there is no trouble that the memory card is tilted and caught by the stopper and cannot be removed. And such an effect can be realized only by providing a stopper integrally with the base shell without increasing the number of parts.

According to the invention of this claim, even when the memory card is inserted and pushed in a slightly inclined state, as the memory card pushes the side wall of the slider corresponding to the outer shape of the memory card, the stopper The inclination of the memory card is gradually corrected due to the presence and the side wall shape of the slider. For this reason, the effect equivalent to the above is acquired.

  A memory card socket according to an embodiment of the present invention will be described with reference to the drawings. 1 shows the external appearance of the memory card socket A and the memory card B, and FIG. 2 shows an exploded state of the memory card socket A. FIG. The memory card B used in the present embodiment is a miniSD card, and has a notch 10 for preventing reverse insertion by dropping one side near the front end. The socket A is formed in a flat (thickness: about 2.3 mm) box having one side opened, and the memory card B is slid out of the opening.

  The socket A has a housing 1 and a plurality of contacts 6 that are electrically connected to the conductive pattern of the circuit board and contact the connection terminals 12 (see FIG. 5) provided on the back surface near the front end of the memory card B. A terminal plate block 7 held in the housing 1, a slider 4 that is urged forward by a spring 5 in the housing 1, holds the memory card B to be inserted and removed, and is slidable back and forth, and the slider 4 and the memory And a lock pin 8 for locking the card B.

  The housing 1 is composed of a shell 3 and a base shell 2 formed by punching out an extremely thin stainless metal plate, and is formed into a flat box shape by being attached to each other, and has an opening 9 for inserting a memory card at the front. Is forming. As shown in FIGS. 3 (a) and 3 (b), the opening end side of both side walls 2a, 2b of the base shell 2 is extended inward in the width direction from the both side walls 2a, 2b to prevent the slider 4 from coming off. Stoppers 2c and 2d are integrally provided.

  The slider 4 is an integral resin molded product and is slidably mounted on the housing 1 as the memory card B is inserted and removed, and both side walls 4c, 4d having an inner width substantially equal to the width of the memory card B. And inlet guide tapers 4e and 4f (see FIG. 4B) are formed on the open ends of the side walls 4c and 4d. Each side wall of the slider 4 has a shape corresponding to the outer shape including the notch 10 of the memory card B, and a window 4a is provided at a position facing the connection terminal arranged on the back surface of the held memory card B. Yes.

  The lock pin 8 has a card lock whose one end is press-fitted into the slider 4 and whose intermediate end is engaged with the lock notch of the memory card B with the memory card B mounted, and the other end is a terminal block. 7 is engaged.

  4A shows the socket base shell 2 and slider 4 described in the background art, and FIG. 4B shows the socket base shell 2 and slider 4 according to the present embodiment. (The same reference numerals are given to the same members in the background art and the present embodiment, but the shapes are different). The stoppers 2c and 2d in the background art of FIG. 4A are located only outside the inlet guide tapers 4e and 4f. On the other hand, the stoppers 2c and 2d in the present embodiment of FIG. 4B are extended to a width equivalent to the inner width D of the slider 4, and the leading end side thereof is bent inward so that the inlet guide taper 4e, Shapes 2e and 2f are provided so as to be along 4f.

  In the socket A according to the present embodiment configured as described above, when the memory card B is inserted, the contact portion 4g of the slider 4 is pushed by the inserted memory card B, so that the slider 4 has the coil spring 5 When the insertion force is released at a predetermined position where the contact 6 contacts the connection terminal 12 provided on the back surface of the memory card B, the coil spring 5 is biased and the lock pin 8 is The slider 4 is locked by the engagement of the shaft portion.

  Then, when removing the memory card B inserted into the socket A, the memory card B is once pushed in the insertion direction to release the engagement state between the heart cam and the shaft portion of the lock pin 8. When the pushing force of the card B disappears, the slider 4 moves forward by the urging force of the coil spring 5 to push out the memory card B.

  Next, an operation when the memory card B is about to be inserted into the opening in a state of being largely inclined will be described with reference to FIG. Even if the memory card B is to be inserted in such a state, there are stoppers 2c and 2d extended to the same width as the inner width of the slider 4 at the opening end, and the leading ends of the stoppers 2c and 2d are bent inward. The memory card B cannot be inserted because it follows the inlet guide taper 4e, 4f of the slider 4 (see FIG. 4B). Therefore, it is possible to prevent the memory card B from being inserted while being largely inclined and deforming the contact 6. In addition, the memory card B is pushed in while being tilted, and the slider 4 is not inadvertently locked. Further, the memory card B is not tilted and is not caught by the stoppers 2c and 2d, so that it cannot be removed.

  Next, the operation when the memory card B is about to be inserted into the opening in a slightly inclined state will be described with reference to FIGS. As shown in FIG. 6, when the memory card B is pushed in with a slight inclination, the front end of the memory card B pushes the contact portion 4 g of the slider 4 and can be inserted. At that time, the stopper 2d serves as a fulcrum, the contact point E between the front end portion of the memory card B and the contact portion 4g formed of an inclined surface slides and the memory card B is rotated in a direction in which the inclination is corrected. As shown in FIG. 7, the memory card B is inserted with the tilt corrected. As a result, the occurrence of problems when the memory card B as described above is inserted while being tilted is prevented. Such an effect can be realized by simply providing the stoppers 2c and 2d integrally with the base shell 2 without increasing the number of parts.

  The present invention needs to be applied to both the stoppers 2c and 2d of the base shell 2. In the configuration in which the present invention is applied only to one stopper, when the memory card B is inserted in a largely inclined state, the insertion of the memory card B cannot be prevented, and the above-described effect cannot be obtained. This is shown in FIGS. 8 (a) and 8 (b). Here, one of the stoppers 2c remains in the conventional configuration, and the present invention is applied only to the stopper 2d. In this case, even if the memory card B is inserted in a largely inclined state, the inlet guide taper 4e of the slider 4 can be pushed in the vicinity of the base of the notch 10 for preventing reverse insertion (F portion in the figure). It is possible that the thick portion 11 of B collides with the contact 6 and deforms the contact 6.

  The present invention is not limited to the configuration of the above-described embodiment, and various modifications are possible, and the housing 1 is composed of the metal shell 3 and the metal base shell 2. Even other materials can be applied.

1 is a perspective view of a memory card socket and a memory card according to an embodiment of the present invention. The disassembled perspective view of the memory card socket. (A) is a top view of the front-end part of the base shell of a housing, (b) is the front view. (A) is a top view of the base shell of the conventional socket, and the front end part of a slider, (b) is a top view of the base shell of the socket and slider front end part by this embodiment. The top view of the socket explaining the operation | movement when it is going to insert in the state in which the memory card inclined largely. The top view of the socket explaining the operation | movement when it is going to insert in the state in which the memory card inclined slightly. The top view of the socket explaining operation | movement when a memory card is further inserted from the state of FIG. (A) and (b) are plan views of a socket for explaining that insertion of a memory card that is greatly inclined cannot be prevented with a configuration in which the present invention is applied to only one stopper. The perspective view of the conventional socket for memory cards, and a memory card. The disassembled perspective view of the socket for memory cards. FIG. 4A is a plan view of a state in which a memory card has begun to be inserted obliquely, and FIG.

Explanation of symbols

A Memory card socket B Memory card D Inner width of the slider 1 Housing 2 Base shell 2a, 2b Side wall of the base shell 2c, 2d Stopper 2e, 2f Stopper shape along the inlet guide taper of the slider 3 Shell 4 Slider 4a Slider 4c, 4d Slider side wall 4e, 4f Slider entrance guide taper 5 Coil spring 6 Contact 7 Terminal block 9 Opening for inserting memory card 10 Notch for preventing reverse insertion 12 Connection terminal

Claims (1)

Formed in a flat box shape with one open side, a housing in which the memory card is slid and inserted through the opening, held in the housing, electrically connected to the conductive pattern on the circuit board and provided on the memory card In a memory card socket comprising a terminal plate block having a plurality of contacts that contact the connection terminal, and a slider that is urged forward by a spring in the housing and that slides to hold the memory card to be inserted and removed,
The memory card has a notch for preventing reverse insertion by dropping one side near the front end, and a connection terminal is provided on the back side near the front end.
The housing is composed of a shell and a base shell that are attached to each other, and a stopper that extends inward in the width direction from the both side walls to the opening end side of the both side walls of the base shell and that prevents the slider from coming off. Provided integrally,
The slider has both side walls having an inner width substantially equal to the width of the memory card, and an entrance guide taper is formed on the opening end side of both side walls, and the both side walls have an outer shape including a notch portion of the memory card. It is an integral resin molded product that has a corresponding shape and has a window provided at a position facing the connection terminal disposed on the back surface of the held memory card.
The stopper is extended to a width equivalent to the inner width of the slider, and is shaped to be bent inwardly along the inlet guide taper of the slider. socket.

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