JP6010863B2 - Card connector - Google Patents

Description

  The present invention relates to a card connector, and more particularly, to a card connector having a structure in which a shield cover formed of a metallic thin plate is slid with respect to a housing so that both are engaged with each other.

  A so-called card connector is widely used as a means for obtaining an electrical connection between a card such as a memory card incorporating an electrical storage means and a printed wiring board on the device side. The applicant of the present application has also proposed a card connector as shown in Patent Document 1. The card connector according to this conventional example will be described based on the present application, FIG. 7 and FIG.

  The card connector 100 according to the conventional example accommodates a card in a slidable manner, and includes a card accommodation space 40 formed by covering the housing 10 with a shield cover 30. The card is inserted from an opening located on the left side in FIG. The housing 10 and the shield cover 30 are configured to engage with each other by sliding the shield cover 30 with respect to the housing 10 along the slide insertion / removal direction of the card, and are provided on the side surface of the housing 10. By sliding the first locking projection 11 and the side locking piece 31 provided on the side surface of the shield cover 30 with each other, the slide is locked.

  The first locking convex portion 11 is a convex-shaped portion provided so as to project a part of the side surface of the housing 10 outwardly in a wedge shape, as shown enlarged in the circle in FIG. . More specifically, the first locking projection 11 includes an inclined wall 11a that gradually increases in protruding amount from the back side to the near side in the card insertion direction, and a base point of the inclined wall from the point where the protruding dimension is maximized. A convex shape having a vertical wall 11b that is substantially vertical toward the side surface of the housing 10 is formed.

  Further, the side locking piece 31 is an elastic piece portion that is formed so that its tip portion is elastically displaced along the width direction of the card connector 100 by cutting out a part of the side surface of the shield cover 30. The procedure for assembling the card connector 100 will be described in detail with reference to FIG.

  (A) has shown the state before combining the housing 10 and the shield cover 30. FIG. In the direction along the direction in which the card is slidably inserted / removed, the housing 10 and the shield cover 30 are set in the illustrated positional relationship, and the shield cover 30 is moved downward (in the direction indicated by the arrow) to cover the housing 10. .

  (B) is the state which covered the shield cover 30 on the housing 10, and has shown the state before making it slide-engage. At this time, the side surface locking piece 31 is located on the far side in the card insertion direction from the first locking projection 11. Thereafter, the shield cover 30 is slid relative to the housing 10 in the direction in which the card is removed (direction indicated by the arrow).

  (C) shows a state where the shield cover 30 is slid to complete the sliding engagement. Between the state of (b) and just before the state of (c), the side surface locking piece 31 is in contact with the inclined wall 11a of the first locking projection 11, and the state of (b) As the slide advances, the amount of elastic displacement toward the outside in the width direction of the card connector 100 is gradually increased along the inclined wall 11a. In the state (c), the side locking piece 31 does not come into contact with the first locking projection 11 and returns to the original position where no elastic displacement has occurred. As a result, the side surface locking piece 31 comes into contact with the vertical wall 11b of the first locking projection 11 and is locked by a so-called lance so that the shield cover 30 moves in a direction to return to the state (b). And the assembly is completed.

  In addition, the 2nd latching convex part 12 provided in the card | curd insertion direction back | inner side of the housing 10 is also the same shape as the 1st latching convex part 11, and with the housing 10 by this 2nd latching convex part 12 The shield cover 30 is locked in the card thickness direction.

Design Registration No. 1410073

  As described above, the card connector 100 according to the conventional example has a lance locking structure including the first locking projection 11 and the side locking pieces 31 on the side surface of the card connector 100 in order to lock the slide engagement. Is provided. However, these engagement amount dimensions are about the thickness of the thin metal plate forming the shield cover 30, and are not necessarily sufficient engagement amounts. For example, when such a card connector 100 is transported for mounting on a printed wiring board, the transport device is configured to push the same surface down toward the inside of the card housing space 40 with respect to the top surface of the shield cover 30. Since the external force is applied and the side surface of the shield cover 30 is flexed in the direction of opening to the outside, the lance locking is released and the card connector 100 is disassembled so that the housing 10 and the shield cover 30 are disassembled. Could be destroyed.

  In order to prevent such destruction of the card connector 100, it is possible to increase the engagement strength between the first engagement projection 11 and the side engagement piece 31 to increase the engagement strength between them. It is considered effective. Specifically, it is possible to increase the amount of engagement by increasing the amount of protrusion of the first locking projection 11 in the outer direction, but in this case, as the amount of protrusion increases. There is a negative effect that the outer dimension of the card connector 100 in the width direction is increased.

  The present invention has been made to solve such a problem. In a card connector in which a housing and a shield cover are slidably engaged, the engagement of the slide engagement is achieved without increasing the outer dimensions of the card connector. The purpose is to prevent the card connector from being destroyed in a state before being mounted on a printed wiring board, such as during transportation, by improving the stop strength.

  Furthermore, by utilizing the structure for improving the locking strength of the slide engagement and simultaneously improving the holding force for the card to be accommodated, it is possible to reduce the possibility of the card dropping out unexpectedly. Objective.

In order to solve the above-mentioned problem, a card connector according to claim 1 of the present invention is a card connector that accommodates a card such as a memory card in a slidable manner, and is formed by covering the housing with a shield cover. A housing space, a contact fixed to the housing, protruding inward of the card housing space so as to be elastically displaceable, and in contact with an electrode disposed on the card; and sliding the shield cover relative to the housing A lance locking piece formed by cutting and raising a part of the upper surface of the card housing space in the shield cover toward the inside of the card housing space in which the shield cover and the housing are engaged with each other depending on the fact that the leading end of a vertical wall surface defining the card receiving space in the housing into contact , Characterized in that the housing and the shield cover are sealed lance.

  According to the invention of claim 1 of the present invention, the lance locking piece is cut and raised toward the inside of the card housing space of the card connector, so that without affecting the outer dimensions of the card connector, Sufficient lance locking engagement amount dimensions can be ensured. As a result, a sufficient lance locking strength can be obtained, so that it is possible to effectively prevent the card connector from being broken due to the lance locking being released.

  The connector according to claim 2 of the present invention is characterized in that the lance locking piece makes elastic contact with the card in a state where the card is accommodated in a predetermined mounting position.

  According to the second aspect of the present invention, since the elastic force of the lance locking piece acts on the card in the state where it is accommodated in the predetermined mounting position, the holding force of the card can be improved. .

  According to the present invention, in the card connector in which the housing and the shield cover are slidably engaged, the locking strength of the slide engagement can be greatly improved without increasing the outer dimensions of the card connector. It is possible to prevent the card connector from being broken before being mounted on the printed wiring board.

  In addition, the structure for improving the locking strength of the slide engagement can be used to simultaneously improve the holding force for the card to be accommodated, thus reducing the risk of the card falling off unexpectedly. can do.

It is an exploded view of the card connector which concerns on one Example of this invention. It is an external view which shows the completion state of the card connector shown in FIG. It is principal part sectional drawing of the card connector shown in FIG. It is the external view which showed the card connector shown in FIG. 1 with the card | curd. It is principal part sectional drawing corresponding to FIG. It is a figure for demonstrating the assembly process of the card connector shown in FIG. It is a figure which shows the conventional card connector. It is a figure for demonstrating the assembly process of the conventional card connector shown in FIG.

  A card connector 1 according to an embodiment of the present invention will be described with reference to FIGS. Regarding the reference numerals in these drawings, the same reference numerals are given to the parts common to the above-described conventional example.

  FIG. 1 is an exploded view of a card connector 1 according to an embodiment of the present invention. Main members constituting the card connector 1 are a housing 10, contacts 20, and a shield cover 30.

  The housing 10 is made of an insulating synthetic resin. A contact 20, which will be described in detail later, is fixed to the housing 10. On the side surface of the housing 10, a first locking projection 11 and a second locking projection 12 are formed as in the conventional example. Further, on a vertical wall surface (along the card thickness direction) that divides the card accommodating space 40, a lance locking contact portion 13 with which a tip of a lance locking piece 32 to be described later contacts is located at the illustrated position. ing.

  The contact 20 is formed in an elongated shape from a conductive metal plate material having elasticity. One end of the contact 20 protrudes inward of the card housing space 40 in a state that can be elastically displaced in the thickness direction of the card, and is elastically contacted with an electrode provided on the card to be inserted. It arrange | positions so that automatic conduction may be obtained. The other end side is integrally molded and fixed to the housing 10, and the tip portion thereof is a terminal for soldering when the card connector 1 is mounted on a printed wiring board (not shown). It has become. In the present embodiment, eight contacts 20 are used, but a necessary number of contacts 20 may be provided depending on the card to be inserted.

  The shield cover 30 is formed in a shape that covers the upper surface and the left and right side surfaces of the housing 10 by pressing a thin metal plate material having elasticity. Note that the front side portion in the drawing is opened so that the card can be inserted, and the card is slidably inserted through the opening (a state in which the card 2 is accommodated is shown in FIG. 4). ). On the side surface of the shield cover 30 on the near side in the figure, a side locking piece 31 similar to the conventional example is formed. On the surface of the shield cover 30 that forms the upper surface of the card storage space 40, a part of the surface is cut and raised toward the inside of the card storage space 40 so that it can be elastically displaced along the thickness direction of the card. A stop piece 32 is formed. In the following description, the state of the lance locking piece 32 shown in the figure may be referred to as an “initial position” of the lance locking piece 32.

  FIG. 2 is an external view showing a completed state of the card connector 1 according to the present embodiment, and FIG. 3 is a cross-sectional view of a main part along the line AA in FIG. The card connector 1 according to the present embodiment accommodates a card so that the card can be slidably inserted, and is provided with a card accommodating space 40 formed by covering the housing 10 with a shield cover 30, and the housing 10 and the shield. The cover 30 has a structure in which the shield cover 30 is engaged with each other by sliding the shield cover 30 with respect to the housing 10 along the slide insertion / removal direction of the card, the first locking projection 11 and the side locking pieces 31. And the fact that the housing 10 and the shield cover 30 are locked in the thickness direction of the card by the second locking projection 12 are the same as the card connector 100 according to the conventional example. It is the same. The difference from the conventional example is that the tip of the lance locking piece 32 described above is in contact with the lance locking contact portion 13 of the housing 10 in this embodiment.

  The amount of engagement between the lance locking piece 32 and the lance locking contact portion 13 is approximately three times the plate thickness of the shield cover 30. This is sufficiently larger than the conventional engagement amount dimension between the first locking projection 11 and the side locking piece 31 which is about the plate thickness. Therefore, even when an external force is applied to the card connector 1 and the shield cover 30 is bent, the lance locking strength is sufficient so that the lance locking is not easily released. Further, since the lance locking piece 32 is cut and raised toward the inside of the card receiving space 40, there is no adverse effect that the outer shape of the card connector 1 becomes large.

  4 is a view showing a state in which the card 2 is inserted into the card connector 1 according to the present embodiment and the card 2 is received at a predetermined position, and FIG. 5 is a line BB in FIG. It is sectional drawing of the principal part along line. In the state in which the card 2 is accommodated, the vicinity of the tip of the lance locking piece 32 is in contact with the surface of the card 2. Since the lance locking pieces 32 can be elastically displaced along the thickness direction of the card 2 as described above, they are in elastic contact with the surface of the card 2. (When the card 2 is removed, the lance locking piece 32 returns to the initial position.) The force of holding the card 2 of the card connector 1 is improved by the action of this elastic force. When a strong impact is applied while the card 2 is inserted, the possibility of the card 2 dropping out unexpectedly can be extremely reduced.

  6A to 6C are side views showing the assembly process of this embodiment. The assembly procedure of this embodiment is the same as that of the above-described conventional example, and the behavior of the first locking projection 11 and the side locking piece 31 during the assembly is the same as that of the conventional example. Therefore, only the differences from the conventional example will be described here. In these figures, the state of the lance locking piece 32 that is not visually recognized is indicated by a broken line.

  (A) has shown the state before combining the housing 10 and the shield cover 30. FIG. At this time, the lance locking piece 32 is in an initial position indicated by a broken line. (B) is the state which covered the shield cover 30 on the housing 10, and has shown the state before making it slide-engage. At this time, since the lance locking piece 32 interferes with the upper surface side of the lance locking contact portion 13, it is temporarily elastically displaced upward and protrudes from the upper surface of the shield cover 30. (C) shows a state in which the shield cover 30 is slid with respect to the housing 10 to complete the sliding engagement. The lance locking piece 32 continues to interfere with the upper surface side of the lance locking contact portion 13 from the state of (b) to just before the state of (c), but finally the state of (c) is reached. When it reaches, the interference disappears and the lance locking piece 32 returns to the initial position. As a result, the tip of the lance locking piece 32 comes into contact with the lance locking contact portion 13 and is locked to lance, and the movement of the shield cover 30 in the direction returning to the state (b) is stopped, and the assembly is completed. .

  The present invention can be suitably used in a card connector in which a housing and a shield cover are slidably engaged.

DESCRIPTION OF SYMBOLS 1 Card connector 10 Housing 11 1st latching convex part 11a Inclined wall 11b Vertical wall 12 2nd latching convex part 13 Lance latching contact part 20 Contact 30 Shield cover 31 Side latching piece 32 Lance latching piece 40 Card accommodation Space 2 Card 100 Conventional card connector

Claims (2)

A card connector that accommodates a memory card or the like so as to be slidable.
A card receiving space formed by covering the housing with a shield cover;
A contact fixed to the housing, protruding inward of the card housing space so as to be elastically displaceable, and in contact with an electrode disposed on the card;
In the case where the shield cover and the housing are engaged with each other by sliding the shield cover with respect to the housing,
A tip of a lance locking piece formed by cutting and raising a part of the upper surface of the card housing space in the shield cover inward of the card housing space, and a vertical wall surface defining the card housing space in the housing ; The card connector is characterized in that the housing and the shield cover are lance-locked by contacting each other. 2. The card connector according to claim 1, wherein the lance locking piece makes elastic contact with the card in a state where the card is accommodated in a predetermined mounting position.

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