JP2010015722A - Connector and contact - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a small-size connector having a stress relaxation function and capable of easily coping with a load at the time of connection with a connection object. <P>SOLUTION: The connector is provided with a contact 2 having a contact part 5 for contacting with a connection object, a connection part 6 to be soldered and connected to an installation object 1, and a stress relaxation part 7 formed between the contact part and the connection part. The contact furthermore has a fixed auxiliary part 9 which is in parallel to the stress relaxation part and contacts the installation object. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a connector, and more particularly to a connector provided with a stress relaxation part between a contact part and a connection part of a contact.

  For example, Patent Document 1 discloses an example of this type of connector. In the connector, a housing is integrally formed in a case that accommodates a board, and a metal terminal is press-fitted and fixed in a through hole of the housing. In the terminal, a portion exposed to one side of the through hole of the housing serves as a terminal contact portion, and a portion exposed to the other side is connected to the substrate by soldering via a curved stress relaxation portion.

  According to the connector disclosed in Patent Document 1, the stress generated by the difference between expansion and contraction of each part at the time of temperature change is relaxed by the stress relaxation part and hardly transmitted to the soldering part connected to the substrate. Thus, since it has a stress relaxation function, the solder crack of the connection part resulting from stress can be prevented.

  Patent Document 2 discloses a connector in which a protrusion is provided on a lead leg portion of a terminal, the protrusion is engaged with a substrate, and a load applied to the terminal at the time of connection is received by the substrate. According to this, it is possible to prevent the solder breakage of the connection portion due to the load applied to the terminal.

JP-A-10-223284 JP 2000-164282 A

  However, in the connector of Patent Document 1, since all the load applied to the terminal contact portion at the time of connection with the connection object is received by the portion where the terminal of the housing is press-fitted and fixed, the housing must have a sturdy structure. Inevitably, the dimensions will increase.

  On the other hand, the connector of Patent Document 2 does not have the stress relaxation function described above. Moreover, in patent document 2, the relationship with the stress relaxation part as disclosed in patent document 1 is not considered at all, and cannot cope with a wide range of temperature change environments.

  Therefore, an object of the present invention is to provide a small connector that has a stress relaxation function and can easily cope with a load at the time of connection with an object to be connected.

  According to the embodiment of the present invention, the contact part for contacting the connection object, the connection part soldered to the attachment object, and the stress formed between the contact part and the connection part A connector including a contact having a relaxation portion, wherein the contact includes a fixing auxiliary portion that is parallel to the stress relaxation portion and abuts against the attachment object.

  The fixing auxiliary part may have a plurality of legs spaced apart from each other, and the stress relieving part may be disposed between the plurality of legs.

  The fixing auxiliary portion may have one leg portion arranged on one side of the stress relaxation portion, and the leg portion and the contact portion may be arranged in a straight line.

  The housing further includes a housing holding the contact, and the contact has a press-fit portion press-fitted into the housing between the contact portion and the stress relaxation portion, and the fixing auxiliary portion is connected to the press-fit portion. It may be.

  The housing may be made so as to come into contact with the attachment object together with the fixing auxiliary portion.

  According to another embodiment of the present invention, the contact portion for contacting the connection object, the connection portion soldered to the attachment object, and the contact portion and the connection portion are formed. A contact having a stress relieving portion, and a fixing auxiliary portion that is in parallel with the stress relieving portion and abuts against the attachment object, the fixing auxiliary portion having a plurality of legs spaced apart from each other, and the stress A contact characterized in that the relaxing portion is disposed between the plurality of leg portions is obtained.

  The connector of the present invention has an advantage that it has a stress relaxation function, can easily cope with a load at the time of connection with an object to be connected, and can be implemented in a small size.

  A connector according to a first embodiment of the present invention will be described with reference to FIGS. 1 to 3.

  The connector shown in FIGS. 1 to 3 is mounted on a plate-like mounting object 1 such as a glass epoxy board, and includes a contact 2 made by punching a metal plate and a resin holding the contact 2. And a housing 3 made of metal. The housing 3 is formed, for example, in a substantially U shape, and is arranged so that the U-shaped leg portion abuts the attachment object 1.

  The contact 2 includes a press-fit portion 4 that is press-fitted into a concave portion formed on the inner surface side of the U-shape of the housing 3, and extends through the housing 3 from the press-fit portion 4, and an object to be connected such as a mating connector (not shown). A contact portion 5 for contacting the connection object 1, a connection portion 6 soldered to the attachment object 1, and a stress relaxation portion 7 integrally formed between the contact portion 5 and the connection portion 6. The press-fit portion 4 extends long in parallel with the attachment object 1.

  As the contact portion 5, a pin-shaped member integrally formed at the center of the press-fitting portion 4 is shown here, but other shapes such as a socket shape can be used depending on the shape of the connection object. . The connection portion 6 is inserted through a through-hole formed in the attachment object 1 and is electrically and mechanically connected to the attachment object 1 by a soldering portion 8 from the back surface thereof. The stress relaxation portion 7 is formed in a substantially S shape and has elasticity or cushioning properties, but may have other shapes.

  The contact 2 further has a plurality of, that is, two leg portions 9 extending in parallel with each other from both ends of the press-fitting portion 4 toward the attachment object 1. The stress relaxation portion 7 is disposed between the two leg portions 9. In other words, the two leg portions 9 are arranged on both sides of the stress relaxation portion 7. These leg portions 9 together constitute a fixing auxiliary portion in parallel with the stress relaxation portion 7. That is, each leg portion 9 abuts on the attachment object 1 and plays a role of assisting fixing of the connector to the attachment object 1.

  This connector is mounted on the mounting object 1 from one side while the connection part 6 is inserted through the through-hole of the mounting object 1 and soldered from the opposite side of the mounting object 1 to attach the connection part 6. Connect to the electrical circuit of the object 1. In this state, a connection object such as a mating connector comes into contact with the contact portion 5, for example. Since the load at the time of fitting is directly received by the attachment object 1 via the leg part 9, it is not necessary to make the housing 3 into a sturdy structure, and therefore the connector can be miniaturized.

  When a glass epoxy board is used as the mounting object 1 and a metal and a resin used in general connectors are used as the contact 2 and the housing 3, respectively, the difference in expansion / contraction at the time of temperature change of these parts Is relatively large. However, as described below, this does not cause a problem.

  When the temperature rises, the press-fitting portion 4 of the contact 2 is slightly moved in the direction away from the attachment object 1 due to the expansion of the housing 3. At this time, the leg portion 9 of the contact 2 tends to move away from the attachment object 1, but an excessive force is prevented from being applied to the soldering portion 8 due to the elastic deformation of the stress relaxation portion 7. Therefore, the soldering part 8 is not cracked or broken when the temperature rises.

  On the other hand, when the temperature drops, the press-fit portion 4 of the contact 2 is slightly moved in the direction approaching the attachment object 1 due to the contraction of the housing 3. At this time, an excessive force is prevented from being applied to the soldering part 8 only by the leg part 9 of the contact 2 being pressed against the attachment object 1. Therefore, the soldering part 8 is not cracked or broken when the temperature drops.

  Since the connector described above is highly resistant to temperature changes, it can be used in places where the temperature is expected to fluctuate significantly from below freezing to 100 ° C. or higher, such as in the engine room of an automobile.

  In addition, although the example in which the fixing auxiliary portion is configured by the two leg portions 9 has been described, of course, it may be configured by three or more leg portions.

  Further, in FIGS. 1 to 3, the connecting portion 6 is inserted into the through hole of the attachment object 1 and soldered, but the connection portion 6 is soldered to the surface of the attachment object 1 as shown in FIG. 4. It can also be implemented by connecting it.

  A connector according to a second embodiment of the present invention will be described with reference to FIG. Parts similar to those of the connector shown in FIGS. 1 to 3 are denoted by the same reference numerals and description thereof is omitted.

  In the connector contact 2 a of FIG. 5, the fixing auxiliary portion is composed of only one leg portion 9 arranged on one side of the stress relaxation portion 7. Moreover, the leg part 9 and the contact part 5 are arrange | positioned on the straight line. Also by this, since the load at the time of fitting of the connection object such as the mating connector can be directly received by the attachment object 1 through the leg portion 9, it is necessary to make the housing 3 in a sturdy structure. is not. Moreover, since the number of leg portions 9 is reduced, the connector can be further miniaturized. In addition, the resistance to temperature change is as great as the connector shown in FIGS.

  Of course, as in FIG. 4, the connection portion 6 may be soldered to the surface of the attachment object 1.

  A connector according to a third embodiment of the present invention will be described with reference to FIG. Parts similar to those of the connector shown in FIGS. 1 to 3 are denoted by the same reference numerals and description thereof is omitted. In FIG. 6, a large number of contacts 2 used in the connector of FIGS. 1 to 3 are held in a row with respect to one housing 3. Thus, it can be implemented as a connector using a plurality of contacts 2.

  In addition, it cannot be overemphasized that various deformation | transformation is possible about the structure and shape of the stress relaxation part 7. FIG.

  In the embodiment of the present invention, the contact is held by the housing. However, the contact can be implemented without the housing, that is, the contact alone.

  The above-described connector can be applied to various uses, but is particularly suitable for use in a location where the temperature varies from below freezing to 100 ° C. or more, such as in an automobile engine room.

It is the perspective view which showed the connector which concerns on the 1st Embodiment of this invention with the attachment target object. FIG. 2 is a half cross-sectional perspective view of the connector of FIG. It is the figure which looked at the half cross-sectional state of the connector of FIG. 1, and an attachment target object from the front of FIG. It is a figure similar to FIG. 3 which shows the modification of the connector of FIG. 1 with an attachment target object. It is a semi-sectional perspective view similar to FIG. 2 which shows the connector which concerns on the 2nd Embodiment of this invention with an attachment target object. It is a perspective view of the connector which concerns on the 3rd Embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Attachment object 2,2a Contact 3 Housing 4 Press-fit part 5 Contact part 6 Connection part 7 Stress relaxation part 8 Soldering part 9 Leg part

Claims (6)

  A contact having a contact portion for contacting a connection target, a connection portion soldered to the mounting target, and a stress relaxation portion formed between the contact portion and the connection portion, and the contact A connector including a housing that holds the fixing member, wherein the contact includes a fixing auxiliary portion that is in parallel with the stress relaxation portion and abuts against the attachment object.   2. The connector according to claim 1, wherein the fixing auxiliary portion includes a plurality of leg portions spaced apart from each other, and the stress relaxation portion is disposed between the plurality of leg portions.   The connector according to claim 1, wherein the fixing auxiliary portion has one leg portion arranged on one side of the stress relaxation portion, and the leg portion and the contact portion are arranged on a straight line.   4. The contact according to claim 1, wherein the contact has a press-fit portion press-fitted into the housing between the contact portion and the stress relaxation portion, and the fixing auxiliary portion is connected to the press-fit portion. The connector according to the above.   The connector according to claim 4, wherein the housing is made to come into contact with the attachment object together with the fixing auxiliary portion.   In a contact having a contact part for contacting a connection object, a connection part soldered to the attachment object, and a stress relaxation part formed between the contact part and the connection part, the stress A fixing auxiliary portion that is parallel to the relaxing portion and abuts against the attachment object, the fixing auxiliary portion has a plurality of legs spaced apart from each other, and the stress relaxation portion is disposed between the plurality of legs. Contact characterized by being.

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