JP2009206012A - Structure for connecting pin header and cable connector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve a problem that cable connectors having a small number of poles easily drop out from a pin header due to vibration or shock when they are attached to the pin header. <P>SOLUTION: A contact member 1 connected to a cable 3 is provided in a housing 2 of a cable connector 4. An end protrusion 2a is formed inside the end part of the housing 2 at a position close to a pin insertion port 2. A metal locking clip 6 is attached at the root of a pin post 5b of a pin header 5 on the side inserted to the cable connector 4 and the pin header includes the pin post 5b on an insulative substrate 5a. An outwardly extending protrusion is formed at the outer circumferential part of the top of the locking clip 6. When the cable connector 4 is inserted into the pin post 5b, the protrusion of the locking clip 6 bites in the end protrusion 2a of the housing 2 to prevent the cable connector 4 from dropping out. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pin header in which a pin post is implanted and a connection structure of a cable connector to the pin post, and particularly relates to a connection structure between a pin post and a cable connector when the number of pin posts connected to the cable connector is one or several. It is.

  In an electronic device such as an information processing apparatus, connection between wiring boards or devices may be performed using a cable connector. FIG. 8 is a perspective view showing a connection structure between a conventional pin header and a cable connector. The cable connector 4 accommodates a contact member connected to the cable 3 in a housing made of an insulating material. The pin header 5 is a plate-like base material 5b made of an insulating material and having pin posts 5a implanted therein. Several tens of pin posts 5a implanted in the base material 5b are used. The pin posts 5a are generally arranged in one or two rows. In the cable connector 4, the contact member connected to the cable 3 is in contact with the pin post 5a to achieve electrical conduction. In the illustrated example, the cable connector 4 is a single-pole connector that comes into contact with a single pin post, but the number of contact members housed in the same housing varies and may be several. There may be several tens of cases.

In the conventional cable connector connection method, the resistance to pulling out the cable connector depends only on the contact pressure between the pin post 5a and the contact member. Therefore, if the number of poles exceeds 10, there is considerable resistance to removal, but if the number of poles is small or the number of poles is small, the cable connector's removal resistance will be low, and vibration or impact It will fall off easily.
An object of the present invention is to solve the above-described problems of the prior art, and an object thereof is to provide a cable connector connection structure that does not easily fall off even when the number of poles is small. It is in.

  In order to achieve the above-described object, according to the present invention, a flat connector is provided and connected to a cable connector including a flat post and a pin post planted through the insulating substrate. A pin header, wherein a pin-shaped locking member having a projection extending outwardly on the outer periphery of the top portion is fitted at the base of the pin post that is inserted into the cable connector. Is provided.

  In order to achieve the above object, according to the present invention, there is provided a connection structure between a pin post installed on a pin header and a cable connector containing a contact conductor in a housing, the cable connector of the pin post A locking member having a cylindrical shape and having a protrusion extending outward is fitted on the outer periphery of the top at the base of the insertion side, and the cable connector of the cable connector extends inward on the lower inner side of the housing. A cable connector connection structure is provided, in which a protrusion is formed in which the protrusion of the locking member engages or the protrusion protrudes when mounted.

  According to the present invention, since the protrusion of the locking member attached to the pin post engages or bites into the housing of the cable connector, the housing is fixed to the pin post when the cable connector is attached to the pin header. Will be. Therefore, according to the present invention, even if the cable connector has a small number of poles, an accident of falling off the pin post due to vibration or impact is prevented. This effect can be obtained without changing the specifications of the conventional pin header and cable connector.

Next, preferred embodiments of the present invention will be described in detail with reference to the drawings.
[First Embodiment]
FIG. 1 is a side view showing a state before insertion of the cable connector 4 according to the first embodiment of the present invention. However, in order to disclose the internal structure of the cable connector 4, the housing is cut open. As shown in FIG. 1, a contact member 1 connected to a cable 3 is installed in the housing 2 of the cable connector 4. Below the cable connector 4, a pin header 5 is prepared in which a pin post 5 b is implanted in an insulating base material 5 a. A locking clip 6 made of an elastic material is attached to the base of the pin post 5b on the side to be inserted into the cable connector 4.

  FIG. 2 is a perspective view showing a state before the cable of the contact member 1 is attached. As shown in FIG. 2, the contact member 1 includes a contact portion 1a, a cable gripping portion 1b, and a cable connection portion 1c. The contact portion 1a is a portion that comes into contact with the pin post 5b with an elastic force. The covered cable is gripped at the cable gripping portion 1b, and is connected to the cable core wire by “caulking” at the cable connecting portion 1c. The contact member 1 is made of a highly conductive material such as a copper alloy, and at least an inner surface of the contact portion 1a is subjected to contact plating such as gold plating.

  FIG. 3 is a perspective view showing the housing 2. The cable connector of the present embodiment is for two pins (two contact members accommodated in the housing). The housing 2 is a plastic molded product, and the contact member to which the cable is connected is inserted into the plastic housing from the upper right side surface in FIG. 3 and held in the housing. A pin insertion slot 2b into which a pin post is inserted is opened on the lower left side of the housing 2, and a window 2c for fixing the contact member in the housing is opened on the upper surface of the figure. The housing 2 is formed with an opening for receiving the contact member 1 through the housing 2, but in the vicinity of the pin insertion opening 2 b of the housing 2, a tip bulge portion 2 a extending inward of the housing 2 is formed. And the cross-sectional shape of the opening is circular in the tip raised portion 2a.

  4A is a perspective view showing the locking clip 6 attached to the pin post 5b, and FIG. 4B is a cross-sectional view taken along line AA of FIG. 4A. As shown in FIGS. 4A and 4B, the locking clip 6 has a slit 6a in the vertical direction. The lower portion of the locking clip 6 is a frustoconical guide portion 6b so that it can be easily inserted into the pin post 5b, and the upper portion thereof is a cylindrical pressure contact portion 6c that sandwiches the pin post 5b. ing. And the protrusion part 6d which protrudes outside is formed in the top part of the pressurization contact part 6c. This protrusion 6d is formed as a press burr at the time of press punching. The locking clip 6 is formed using a material having an elastic limit larger than that of iron, such as beryllium copper, beryllium bronze, phosphor bronze, or the like so that the pin post 5b can be clamped with an elastic force. The cable connector of the present embodiment is for two pins.

  FIG. 5 is a side view showing a state in which the cable connector 4 is attached to the pin header 5. However, in order to make the inside of the cable connector 4 easy to see, the housing is cut open. The outer diameter of the pressure contact portion 6c of the locking clip 6 in a state in which the locking clip 6 is mounted on the pin post 5b is approximately the same as the inner diameter of the tip raised portion 2a of the housing 2 of the cable connector 4. Therefore, when the cable connector 4 is attached to the pin header 5, the protrusion 6 d of the locking clip 6 bites into the tip raised portion 2 a of the housing 2. As a result, once the cable connector 4 is inserted into the pin post 5b of the pin header 5, it will not easily fall off even if vibration or impact is applied. The mounting of the locking clip 6 having the protrusions 6d in this way is particularly effective when the number of poles is small as in the case of using the cable connector 4 for 5 pins or less. Conversely, when the number of poles is large as in the case of using a cable connector for 10 pins or more, there are few merits of applying the present invention.

[Second Embodiment]
FIG. 6 is a perspective view of a locking clip used in the second embodiment of the present invention. The sectional view of the locking clip used in the second embodiment is the same as FIG. In FIG. 6, the same parts as those used in the first embodiment shown in FIG. Although not clearly shown in FIG. 6, a protrusion 6d is formed on the outer periphery of the top of the pressure contact portion 6c as shown in FIG. 4B. The locking clip 6 used in the present embodiment is used when a prismatic pin post with rounded corners is used, and has a shape close to a square tube in accordance with the outer shape of the prismatic pin post. Yes.

[Third Embodiment]
FIGS. 7A and 7B are a perspective view and a partial sectional view of a locking clip used in the third embodiment of the present invention. In FIG. 6, the same parts as those of the locking clip used in the first embodiment shown in FIG. Unlike the locking clip 6 used in the first and second embodiments, no slit is formed in the locking clip 6 used in the present embodiment. The locking clip used in the first and second embodiments is obtained by processing a stamped metal plate, but the locking clip used in the present embodiment is a cylindrical metal member attached to a press machine. It has been processed using. The inner diameter at the pressure contact portion 6c of the locking clip 6 used in the present embodiment is slightly narrower than the diameter of the pin post 5b.

  As mentioned above, although preferable embodiment of this invention was described, this invention is not limited to these embodiment, In the range which does not deviate from the summary of invention, it can change suitably. For example, the connection method between the cable core and the contact member may be soldering or brazing. Further, the locking method of the locking member and the housing of the cable connector is replaced with a method in which the protruding portion of the locking member bites into the housing bulge, so that the vertical height of the housing bulge is substantially equal to the height of the locking clip. Then, the protrusion of the locking member may be engaged with the step formed by the housing bulge.

The side view which cuts and opens a housing and shows the state before insertion of the cable connector of the 1st Embodiment of this invention. The perspective view of the contact member used for the cable connector of the 1st Embodiment of this invention. The perspective view of the contact member used for the cable connector of the 1st Embodiment of this invention. The perspective view and sectional drawing of the locking clip used for the 1st Embodiment of this invention. The side view which cuts and opens a housing and shows the state at the time of insertion of the cable connector of the 1st Embodiment of this invention. The perspective view and sectional drawing of the locking clip used for the 1st Embodiment of this invention. The perspective view and sectional drawing of the locking clip used for the 1st Embodiment of this invention. The perspective view of a prior art example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Contact member 1a Contact part 1b Cable holding part 1c Cable connection part 2 Housing 2a Tip protuberance part 2b Pin insertion port 2c Window 3 Cable 4 Cable connector 5 Pin header 5a Base material 5b Pin post 6 Locking clip 6a Slit 6b Guide part 6c Pressure contact 6d protrusion

Claims (7)

A pin header connected to a cable connector, comprising a flat insulating base and a pin post planted through the insulating base and inserted into the cable connector of the pin post A pin header having a cylindrical shape and a locking member having a protrusion extending in the outward direction on the outer periphery of the top portion is fitted into the base of the side. The pin header according to claim 1, wherein the locking member is made of an alloy having an elastic limit larger than that of iron. The pin header according to claim 1, wherein the locking member has a slit formed in an axial direction of the pin post. 4. The pin header according to claim 1, wherein a size of the lower portion of the locking member is increased toward the lower portion so as to form a substantially truncated cone or truncated pyramid shape. 5. The pin header according to any one of claims 1 to 4, wherein the protrusion of the locking member is formed by a burr at the time of pressing. A connection structure between a pin post installed on a pin header according to any one of claims 1 to 5 and a cable connector formed by housing a contact conductor in a housing, wherein the housing is directed inward at a lower inner side of the housing. A connecting structure for a cable connector, characterized in that a protrusion is formed to engage with or protrude into the locking member when the cable connector is attached. The connection structure for a cable connector according to claim 6, wherein the number of contact conductors accommodated in the housing is one or several.

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