JP5275781B2 - Electrical connection terminal and connector using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a terminal for electrical connection, which can be in contact with a connection target via a plurality of contacts and does not lead to upsizing in a width direction and a height direction, and to provide a connector using the terminal. <P>SOLUTION: Since a terminal 20 is formed of a pair of width-directional terminal bodies 21, and the terminal bodies 21 are overlaid on each other so that the thickness direction is identical with a width direction of the terminal 20, the terminal can be in contact with a flexible circuit A via a plurality of contacts and can improve connection reliability. At the same time, since it does not lead to upsizing in a width direction and a height direction, it is very advantageous for a densified terminal array with a small pitch and height reduction of a connector body. In this case, the terminal bodies 21 are jointed in order for respective elastic pieces 22 to be independently elastically deformable, and thereby motion of one elastic piece 22 cannot be interfered with by the other elastic piece 22. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to an electrical connection terminal for connecting, for example, a flexible printed circuit (FPC), a flexible flat cable (FFC), and the like, and a connector using the same.

  Conventionally, this type of connector includes a connector body that can insert a connection object made of FPC or FFC into a predetermined position, and a plurality of terminals that come into contact with the connection object inserted into the connector body. When a connection object is inserted, a connection object and a terminal are in contact with each other and are electrically connected (for example, see Patent Document 1).

  The terminal of this connector has an elastic piece portion extending in the insertion / extraction direction of the connection object, and a contact portion provided on the distal end side of the elastic piece portion. When the connection object contacts the contact portion, the elastic piece portion is It is elastically deformed, and the contact portion comes into pressure contact with the connection object by the elastic force of the elastic piece portion. However, in such a terminal, since there is only one contact point with the connection object, for example, foreign matter such as dust is sandwiched between the contact part and the connection object, and contact failure at the contact point occurs. There is a problem that it is not possible to conduct with a connection object.

Therefore, for example, like the terminal 1 shown in FIG. 7, a pair of elastic pieces 1b in the width direction are integrally provided on the terminal body 1a, and the contact portions 1c provided on the elastic pieces 1b are brought into contact with the connection object. Or a pair of upper and lower elastic pieces 2b integrally provided on the terminal body 2a as in the terminal 2 shown in FIG. 8, and the contact portions 1c provided on the elastic pieces 2b are brought into contact with the connection object. There is. That is, in these terminals 1 and 2, by providing a plurality of contacts, even if contact failure occurs at one contact, conduction can be ensured at the other contact.
JP 2008-153059 A

  However, in the case where the pair of elastic pieces 1b in the width direction is provided, each elastic piece 1b is formed integrally with the terminal body 1a. Therefore, the terminal body 1a is enlarged in the width direction, and the terminal arrangement is formed with a small pitch. There was a problem that it could not cope with high density. In the case where a pair of upper and lower elastic piece portions 2b is provided, one elastic piece portion 2b must be formed so as to extend from the upper side to the front side of the other elastic piece portion 2b. However, the size of the connector main body cannot be reduced.

  The present invention has been made in view of the above-described problems, and the object of the present invention is to allow contact with an object to be connected at a plurality of contact points without increasing the size in the width direction and the height direction. An object of the present invention is to provide an electrical connection terminal and a connector using the same.

In order to achieve the above-mentioned object, the present invention is made of a conductive metal plate, and is provided with a terminal main body attached to the connector main body, and provided in the terminal main body so as to be elastically deformable in a predetermined direction and extending in the insertion / extraction direction of the connection object An electrical connection terminal comprising a piece and a contact portion provided on the distal end side of the elastic piece, and when the object to be connected is inserted into the connector body, the object to be contacted is brought into contact with the contact portion and is electrically connected to the object to be connected. In the above, a plurality of terminal bodies are overlapped with each other so that the thickness direction thereof is the width direction of the terminals, and the portions other than the elastic piece portions are mutually attached so that the elastic piece portions can be elastically deformed independently. It is joined.

Thus, since the plurality of contact portions are provided to the terminal, a plurality of contacts on one of the connecting portions of the connecting object (contact portion) contacts, even if contact failure occurs in the contact point, the other contact Conductivity can be ensured. Moreover, since the terminal is overlapped so that the thickness direction of the terminal body is the width direction of the terminal, the terminal is not enlarged in the width direction and the height direction. In this case, each terminal body, since the elastic piece portion is joined so as to solely elastically deformable respectively, is not the operation of the elastic piece portion is prevented by the other elastic piece portion .

According to the present invention, the connection object can be contacted by a plurality of contacts, so that the connection reliability can be improved and the size is not increased in the width direction and the height direction. This is extremely advantageous for increasing the density of the terminal arrangement and reducing the height of the connector body. In this case, since the operation of each elastic piece portion is prevented from being hindered by the other elastic piece portion, the contact portion of the terminal body can be reliably pressed against the respective connection object.

  1 to 6 show an embodiment of the present invention. FIGS. 1 and 2 are side sectional views of a connector, FIG. 3 is a perspective view of a terminal, FIG. 4 is an exploded perspective view, and FIG. FIG. 6 is a plan view of a metal plate. FIG.

  This connector includes a connector main body 10 into which one end of a flexible circuit A as a connection object can be inserted, a plurality of terminals 20 arranged at equal intervals in the width direction within the connector main body 10, and the flexible circuit A as each terminal. It is comprised from the press member 30 pressed to 20 side.

  The flexible circuit A is a so-called flexible printed circuit (FPC), and a plurality of electrical contacts (not shown) are provided at intervals in the width direction on the lower surface on the tip side. In addition, as a connection target object, a flexible flat cable (FFC) etc. may be sufficient.

  The connector body 10 is made of a synthetic resin molded product, and the flexible circuit A is inserted from the front opening. A plurality of terminal holes 10a are provided at equal intervals in the width direction on the back side of the connector body 10, and each terminal 20 is held in each terminal hole 10a.

  The terminal 20 includes a pair of terminal main bodies 21 made of a conductive metal plate, and the terminal main bodies 21 are overlapped so that the thickness direction is the width direction of the terminals 20. Each terminal main body 21 has an elastic piece portion 22 and a fixed piece portion 23 that extend in a bifurcated manner at an interval from each other in the vertical direction, and a board connecting portion connected to the board B at the rear end of the terminal main body 21. 24 is provided. A contact portion 22 a that contacts one surface of the flexible circuit A is provided at the tip of each elastic piece portion 22, and the contact portion 22 a is formed so as to protrude toward the fixed piece portion 23 side. Each terminal body 21 is formed with a thin film portion 25 made of a synthetic resin coating on both side surfaces on the rear end side, and is joined to each other in the width direction (thickness direction) via the thin film portion 25. In this case, the elastic piece 22 of each terminal body 21 can be elastically deformed independently. Also, one terminal body 21 has an elastic piece portion 22 that is longer than the other terminal body 21 by a length L toward the front, and the position of the contact portion 22a of each elastic piece portion 22 is accordingly flexible circuit A. It is shifted in the insertion / extraction direction. In addition, as shown in FIG. 6, the terminal 20 is formed by punching a metal plate 26 in which an organic film serving as the thin film portion 25 is formed on both sides in the thickness direction in advance in the drawing by a one-dot chain line in FIG. It is formed by joining two terminal bodies 21 to each other in the width direction.

  The pressing member 30 is made of a synthetic resin molded product, and includes a pair of widthwise operation units 31 disposed outside the connector body 10 and a pressing piece 32 disposed in the connector body 10. The pressing piece 32 is formed so that the thickness dimension gradually decreases toward the distal end side, and is interposed between the bottom surface portion 12 of the connector main body 10 and the flexible circuit A.

  In the connector configured as described above, each terminal 20 is connected to the board A by soldering the board connecting portion 24 of each terminal 20 to the board A. When the flexible circuit A is connected to the connector, the flexible circuit A is inserted into the connector body 10 with the pressing member 30 pulled out forward as shown in FIG. Next, as shown in FIG. 2, when the pressing member 30 is moved toward the rear of the connector body 10, the pressing piece 32 is press-fitted between the flexible circuit A and the elastic piece portion 21, and the contact portion of each terminal 20. 22a is pressed and electrically connected to a connecting portion (not shown) on one surface of the flexible circuit A. At that time, since the terminal 20 is provided with a pair of contact portions 22a in the width direction, two contact points (contact portions 22a) are in contact with one connection portion of the flexible circuit A, and contact failure occurs at one contact point. Even if it occurs, it is possible to ensure conduction at the other contact. Moreover, since the terminal 20 overlaps the plate-shaped terminal main body 21 so that the thickness direction becomes the width direction of the terminal 20, it does not increase in size in the width direction and the height direction.

  As described above, according to the present embodiment, the terminals 20 are formed by the pair of terminal bodies 21 in the width direction, and the terminal bodies 21 are overlapped with each other so that the thickness direction is the width direction of the terminals 20. In addition to being able to contact the flexible circuit A with a plurality of contacts, it is possible to improve the connection reliability and not increase in size in the width direction and the height direction. This is extremely advantageous for reducing the height of the connector body 10. In this case, since each terminal body 21 is joined so that the elastic pieces 22 can be elastically deformed independently, the operation of one elastic piece 22 is hindered by the other elastic piece 22. Therefore, the contact portions 22a of the terminal bodies 21 can be reliably brought into pressure contact with the flexible circuit A, respectively.

  In addition, since the contact portions 22a of the terminal bodies 21 are provided so that their positions are shifted from each other in the insertion / extraction direction of the flexible circuit A, contact failure due to the presence of foreign matters such as dust is simultaneously caused by the contact portions 22a due to dispersion of the contact positions. Occurrence is reduced and the occurrence of poor conduction can be more reliably prevented.

  Further, since the thin film portions 25 are interposed between the joining surfaces of the terminal bodies 21 so as to secure a slight gap between the elastic piece portions 22, the pulling of the elastic piece portions 22 by, for example, burrs is performed. Engagement can be prevented, and each elastic piece 22 can always be operated smoothly. In this case, the flux rise when the terminal 20 is soldered to the substrate B can be prevented by the thin film portion 25, so that the elastic pieces 22 can be prevented from sticking to each other due to the flux.

  Further, since the thin film portion 25 is interposed between the side surface of each terminal main body 21 and the connector main body 10, the thin film portion 25 prevents the flux from rising into the gap between each terminal main body 21 and the terminal hole 10a. Can do.

  Further, since each terminal body 21 is formed by punching a metal plate 26 having an organic film that becomes the thin film portion 25 on the surface, there is no need to form the thin film portion 25 in the terminal body 21 in a later process. , Productivity can be improved.

Side surface sectional drawing of the connector which shows one Embodiment of this invention Side sectional view of connector Terminal perspective view Exploded perspective view of terminal Plan view showing the terminal mounting condition Top view of metal plate Perspective view of a terminal showing a conventional example Side view of terminal showing another conventional example

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ... Connector main body, 20 ... Terminal, 21 ... Terminal main body, 22 ... Elastic piece part, 22a ... Contact part, 25 ... Thin film part, 26 ... Metal plate, A ... Flexible circuit.

Claims (6)

A terminal body made of a conductive metal plate, attached to the connector body, provided in the terminal body so as to be elastically deformable in a predetermined direction, extending in the insertion / removal direction of the connection object, and on the distal end side of the elastic piece part Provided with a contact portion, and when a connection object is inserted into the connector body, the connection object contacts the contact portion and is electrically connected to the connection object.
Overlapping the terminal bodies so that the thickness direction is the width direction of the terminals,
A terminal for electrical connection, wherein each terminal body is joined to a portion other than the elastic piece so that the elastic piece can be elastically deformed independently. The electrical connection terminal according to claim 1, wherein the contact portions of the terminal bodies are provided so that their positions are shifted from each other in the insertion / extraction direction of the connection object. The electrical connection terminal according to claim 1, further comprising a thin film portion interposed between the joint surfaces of the terminal bodies. The electrical connection terminal according to claim 1, wherein a thin film portion interposed between the terminal body and the connector body is provided on a side surface of each terminal body. 5. The electrical connection terminal according to claim 3, wherein each of the terminal bodies is formed by punching a metal plate having an organic film serving as a thin film portion on a surface thereof. A connector comprising the electrical connection terminal according to claim 1, 2, 3, 4, or 5.

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