JP2008027707A - Connector for flexible substrate - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a connector for a flexible substrate capable of surely preventing an inserted flexible substrate from coming off even if it is a Non-ZIF type, and capable of surely blocking harmful magnetic waves at the same time. <P>SOLUTION: The connector for a flexible substrate is provided with a housing 30 for the flexible substrate 20 to be inserted into and pulled from, a lock member 40 arranged in the housing 30 in opposition to an engagement part 23 of the inserted flexible substrate 20 for engagement with the engagement part 23, and a shield plate 50 fitted to the housing 30 to surround its side part. A spring part 60 to face to a shield foil 22 of the flexible substrate 20 inserted into the housing 30 is formed on the shield plate 50, to be elastically connected to the shield foil 22 to bias the flexible substrate 20 to a direction for its engagement part 23 to be pressed to the lock member 40 of the connector 10. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a Non-ZIF type connector into which a flexible substrate such as FPC (flexible printed circuit) or FFC (flexible flat cable) is inserted and removed, and in particular, a connector with a shielding function for blocking harmful electromagnetic waves. About.

  In recent years, with the increase in the amount of information processed by various electronic devices, there is an increasing need to take measures against high-frequency noise for flexible substrates that play a role of information transmission in electronic devices and connectors to which the flexible substrates are connected. .

  As a countermeasure, a metal shield plate is attached to the side of the connector to block harmful electromagnetic waves (Patent Document 1). In addition, one in which a metal shield foil is coated on one side of a flexible substrate is also known.

JP 2003-168523 A

  The connector described in Patent Document 1 is a ZIF type, but for this type of connector, a Non-ZIF type that can insert and remove a flexible substrate with one touch and does not require a large work space is often desired. However, since the non-ZIF type connector presses and holds the inserted flexible board only by the elastic force of the terminals provided in the connector, it is necessary to take measures against the flexible board from coming off.

  Therefore, the development of a Non-ZIF type connector that can reliably prevent the inserted flexible board from being removed and at the same time reliably block harmful electromagnetic waves has been an issue.

  In order to solve the above-described problems, the present invention includes a flexible substrate body, a shield foil provided on one side surface of the substrate body, and an engagement portion for retaining the cover provided on the other side surface of the substrate body. A non-ZIF type connector to which a flexible substrate is connected, the housing to which the flexible substrate is inserted and withdrawn, and provided in the housing so as to face the engaging portion of the flexible substrate inserted therein A locking member for engaging with the engaging portion; and a shield plate provided on the housing so as to surround the side portion of the flexible substrate, and the flexible substrate inserted into the housing on the shield plate. A spring portion is formed so as to face the shield foil, and the spring portion is elastically contacted with the shield foil so that the flexible substrate and the engaging portion are above the connector. In which biases is pressed against the locking member.

  A terminal for elastically contacting the conductor of the flexible substrate is provided inside the housing, and the terminal biases the flexible substrate in a direction in which the engaging portion is pressed against the lock member of the connector. It is preferable.

  According to the connector for a flexible substrate according to the present invention, even if it is a Non-ZIF type, the inserted flexible substrate can be reliably prevented from coming off, and at the same time, harmful electromagnetic waves can be reliably blocked.

  Preferred embodiments of the present invention will be described with reference to the accompanying drawings.

  A flexible substrate 20 is inserted into the connector 10 (Non-ZIF type) shown in FIGS. 1 and 2 as shown in FIGS.

  As shown in FIGS. 3 and 4, the flexible substrate 20 includes a flexible substrate body 21, a shield foil 22 provided on one side surface of the substrate body 21, and a retaining member provided on the other side surface of the substrate body 21. And an engaging portion 23 for use.

  The substrate body 21 includes a pair of base films 24 made of an insulating material such as polyester, and a plurality of conductors 25 that are sandwiched between them and arranged at intervals in the width direction. The conductor 25 is exposed at the tip portion on one side surface of the substrate body 21 by removing the tip portion of one base film 24.

  The shield foil 22 is formed on the base film 24 on the side where the conductor 25 is exposed by coating a conductive metal such as copper or aluminum along the longitudinal direction thereof. A protective layer 26 made of an insulating material is formed on the shield foil 22 except for a tip portion that comes into contact with a contact portion 71 of a terminal 70 (described later) implanted in the connector 10.

  The engaging portion 23 includes a reinforcing plate 27 attached on the base film 24 on the side where the conductor 25 is not exposed, and an engaging window 28 opened in the reinforcing plate 27. The reinforcing plate 27 is made of a material such as polyethylene terephthalate having appropriate rigidity and flexibility, and two engagement windows 28 are formed at intervals in the width direction of the substrate body 21 in this embodiment.

  As shown in FIGS. 1 to 4, the connector 10 is of a Non-ZIF type, and includes a housing 30 into which the flexible board 20 is inserted and removed, and an engaging portion 23 of the flexible board 20 inserted into the housing 30. The lock member 40 is provided so as to face and engage with the engaging portion 23, the shield 30 provided on the housing 30 so as to surround the side portion thereof, and the shield plate 50 inserted into the housing 30. And a spring portion 60 formed so as to face the shield foil 22 of the flexible substrate 20.

  The housing 30 is made of an insulating material such as PPS (polyphenylene sulfide), and has an insertion / extraction port 31 through which the flexible substrate 20 is inserted / extracted. The housing 30 is connected to the insertion / extraction port 31 to be inserted therein. Insertion space 32 is provided. In addition, a plurality of terminals 70 are provided in the housing 30 for elastically contacting the conductor 25 of the flexible substrate 20 inserted into the insertion / extraction space 32. The terminal 70 includes a contact portion 71 that elastically contacts the conductor 23 of the flexible substrate 20, a press-fit portion 72 that is press-fitted into a press-fit groove 33 formed in the housing 30, and a tail that is soldered to a signal land on a circuit board (not shown). Part 73.

  The lock member 40 includes a tongue portion 41 inserted into a fixing portion 34 that is recessed in the upper portion of the housing 30, and an anchor hook 42 that is provided at a lower end of the tongue portion 41 and is hooked on an engagement surface 35 formed on the housing 30. A body 43 integrally formed with the tongue 41 and disposed adjacent to the center of the insertion / extraction port 31 of the housing 30, and an engagement hook 44 provided on the body 43 and engaged with the engagement window 28 of the flexible substrate 20. Like the housing 30, it is made of an insulating material. In the present embodiment, since the engagement windows 28 of the flexible substrate 20 are provided at intervals in the width direction of the substrate 20, the engagement hooks 44 of the lock member 40 are also arranged in the longitudinal direction of the insertion / extraction port 31. However, the number of the engagement windows 28 may be one or three or more, and the number of the engagement hooks 44 may be one or three or more. Good.

  The shield plate 50 is made of a metal plate (iron, stainless steel, etc.) bent so as to surround the side portion of the housing 30, and is formed at a lower portion on one side surface of the housing 30 as shown in FIGS. 1 and 3. A first fixed tongue 51 inserted into the fixed hole 36 and a second fixed tongue 52 inserted into a second fixed hole 37 formed in the lower part of the other side surface of the housing 30 as shown in FIGS. And a folded portion 53 formed in an inverted J shape so as to be engaged with a fixed edge portion 38 formed on the upper portion of the other side surface of the housing 30 and soldered to a grounding land (not shown) of the circuit board. The earth tail part 54 is provided. The first fixing hole 36 and the second fixing hole 37 are formed in a first block 361 and a second block 371 that are formed to protrude below the one side surface and the other side surface of the housing 30, respectively. The first fixed tongue portion 51, the second fixed tongue portion 52, and the turned-up portion 53 are formed by cutting up a part of the shield plate 50 or the like.

  As shown in FIGS. 1 and 3, the spring portion 60 is a leaf spring formed by cutting and raising a part of the shield plate 50, and an inclined portion 61 inclined toward the inside of the housing 30, It has an elastic contact portion 62 formed in an arc shape in cross section at the tip of the inclined portion 61 and elastically contacting the shield foil 22 of the flexible substrate 20. The spring part 60 has its elastic contact part 62 elastically contacted with the shield foil 22 so that the flexible substrate 20 is provided from one side (the side where the shield foil 22 is provided) to the other side (the engagement part 23 is provided). ). In the present embodiment, three spring portions 60 are arranged at intervals in the width direction of the connector 10, but one spring portion 60 may be arranged, or two or four or more spring portions 60 may be arranged at intervals.

  The operation of the present embodiment having the above configuration will be described.

  As shown in FIGS. 3 and 4, when the flexible substrate 20 is inserted into the connector 10, the contact portion 71 of the terminal 70 in the connector 10 rides on the conductor 25 of the flexible substrate 20 and is elastically deformed, and the shield plate of the connector 10. 50, the spring portion 60 formed on the shield board 22 of the flexible board 20 is elastically deformed, and the engagement hook 44 of the lock member 40 of the connector 10 is formed on the reinforcing plate 27 of the flexible board 20. 28 is engaged.

  When the engagement hook 44 of the connector 10 is engaged with the engagement window 28 of the flexible substrate 20, the flexible substrate 20 is prevented from being detached from the connector 10. Specifically, the engagement hook 44 is hooked and locked on the lower frame surface 29 of the engagement window 28, and the flexible substrate 20 is prevented from coming off.

  The contact portion 71 of the terminal 70 of the connector 10 is elastically contacted with the conductor 25 of the flexible substrate 20, so that the current flowing through the conductor 25 of the flexible substrate 20 is a signal of a circuit board (not shown) on which the connector 10 is mounted via the terminal 70. Flows into the land. That is, the flexible substrate 20 and the circuit board are electrically connected.

  When the spring portion 60 formed on the shield plate 50 of the connector 10 is in elastic contact with the shield foil 22 of the flexible substrate 20, harmful electromagnetic waves that have jumped into the shield foil 22 of the flexible substrate 20 are transmitted via the spring portion 60 to the connector 10. 1 is passed through the earth tail portion 54 of the shield plate 50 shown in FIG. The shield plate 50 formed so as to surround the side portion of the housing 30 electromagnetically shields the conductor 25 of the flexible substrate 20 inserted into the connector 10.

  Further, when the flexible board 20 is inserted into the connector 10, the spring portion 60 presses the flexible board 20 to the left in FIG. 3, so that the engagement window 28 of the flexible board 20 shown in FIG. And the engagement is difficult to release. That is, the portion of the flexible substrate 20 that protrudes from the connector 10 is bent to the right in FIG. 4 so that the engagement window 28 is detached from the engagement hook 44 and the flexible substrate 20 can be removed. Since the portion 60 presses the portion of the flexible substrate 20 directly below the insertion / extraction opening 31 to the left in FIGS. 3 and 4, the engagement window 28 positioned immediately above the insertion / extraction opening 31 is pressed against the engagement hook 44. It becomes difficult to release those engagements.

  Therefore, unless the portion of the flexible board 20 that protrudes from the connector 10 is intentionally bent to the right in FIG. 4, the engagement window 28 does not come off from the engagement hook 44, and the flexible board 20 unexpectedly becomes a connector. It will not deviate from 10. In other words, the pressing force of the spring part 60 against the shield foil 22 (the restoring force of the spring part 60 elastically deformed by the insertion of the flexible substrate 20) is used to electrically connect the shield foil 22 and the shield plate 50 securely. At the same time, it also functions as a force for pressing the engagement window 28 against the engagement hook 44 to hold the flexible substrate 20 from coming off. Therefore, even the non-ZIF type connector 10 can surely prevent the inserted flexible board 20 from being removed, and at the same time can reliably block harmful electromagnetic waves.

  In the connector 10 according to the present embodiment, as shown in FIG. 1, the three spring portions 60 and the two engagement hooks 44 are connected in the width direction of the insertion / extraction port 31 (the flexible board 20 inserted into the connector 10. The spring portions 60 are arranged so as to sandwich the respective engagement hooks 44 in the width direction, so that the engagement windows 28 of the flexible board 20 inserted into the connector 10 can be accurately positioned. Can be pressed against the engagement hook 44.

  Further, since the terminal 70 implanted in the housing 30 also presses the flexible board 20 inserted into the connector 10 to the left in FIG. 4, the flexible board 20 is pushed to the left by the pressing force, and the engagement window. 28 is pressed against the engagement hook 44. Therefore, the restoring force of the terminal 70 elastically deformed by the insertion of the flexible substrate 20 also contributes to preventing the flexible substrate 20 from coming off.

It is a perspective view of the connector for flexible substrates which concerns on one Embodiment of this invention. It is the perspective view which looked at the connector of FIG. 1 from the other side. It is the III-III sectional view taken on the line of FIG. 1, FIG. It is the IV-IV sectional view taken on the line of FIG. 1, FIG.

Explanation of symbols

10 Connector (Non-ZIF type)
20 flexible substrate 21 substrate body 22 shield foil 23 engaging portion 30 housing 40 locking member 50 shield plate 60 spring portion 70 terminal

Claims (2)

Non-ZIF type to which a flexible substrate having a flexible substrate main body, a shield foil provided on one side surface of the substrate main body, and an engaging portion for retaining the cover provided on the other side surface of the substrate main body is connected. Connector,
A housing into which the flexible board is inserted and removed; a lock member provided on the housing so as to face the engaging portion of the flexible board inserted into the housing; and a locking member for engaging with the engaging portion; and the housing And a shield plate provided so as to surround the side portion thereof, and a spring portion is formed on the shield plate so as to face the shield foil of the flexible substrate inserted into the housing, and the spring portion Is a connector for a flexible substrate, which elastically contacts the shield foil and biases the flexible substrate in a direction in which the engaging portion is pressed against the lock member of the connector. A terminal for elastically contacting the conductor of the flexible substrate is provided inside the housing, and the terminal biases the flexible substrate in a direction in which the engaging portion is pressed against the lock member of the connector. The connector for flexible substrates of Claim 1.

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