KR100542063B1 - Electric connector - Google Patents

Abstract

An object of the present invention is to provide an electrical connector that can be simply, reliably, and stably connected in pressure.

An electrical connector having a housing (1) made of an insulating material for holding a plurality of metal contacts (21) having a contact portion (27), wherein the contact portion (27) is in contact with the core wire (C2) of the cable. It has a lid-shaped pressing member (11) formed with a pressing portion (14) for pressing the cable to the contact portion (27) by a rotational movement freely between the open position and the closed position with respect to (1) The pressing member 11 is provided with a receiving groove 13 of a cable on a surface of the pressing member 11 opposite to the contact portion 27 during the rotational movement, and the receiving groove 13 has the pressing member 11 in an open position. 13A of introduction parts which oppose a contact part when it exists, and the holding part 13C which opposes the contact part 27 when it is in a closed position are included.

Description

Electrical connector {ELECTRIC CONNECTOR}

1 is a plan view of an electrical connector of one embodiment of the present invention.

Fig. 2 is a sectional view when the connector of Fig. 1 is used, wherein (A) shows an open state, (B) shows a middle state, and (C) shows a closed state, respectively.

3 shows a pressing member of the connector of FIG. 2, (A) is a sectional view, (B) is a side view, and (C) is a bottom view.

FIG. 4 is an inclination view from the side of the pressing member of the connector of FIG. 2.

5 is a pressing member as another embodiment of the present invention, (A) is a sectional view, (B) is a side view, and (C) is a bottom view.

6 (A), (B) and (C) show still another embodiment of the present invention, respectively, and are views seen from a direction corresponding to FIG. 5 (C).

7 is a perspective view of a detached state of a conventional connector.

8 is a cross-sectional view when the connector of FIG. 7 is used.

Explanation of symbols on the main parts of the drawings

         1 housing 11 press member

         13: accommodation home 13A: introduction

         13B: Transition part 13C: Retention part

         13C1: groove bottom surface 14: pressure part

         21: contactor 27: contact

The present invention relates to an electrical connector, in particular an electrical connector which is in pressure contact with the contact of the core and the contact of the cable.

In the electrical connector of the above kind, the pressure-contacting contact retains the plate surface of a metal plate, and a contact part is formed, and it is known that the contact type contacts the core wire of a cable at the side end surface of this contact part. As an example, what was disclosed by Unexamined-Japanese-Patent No. 10-255921 is mentioned.

The known connector fits the cable holder 52 into one housing 51 and holds the contact 62 in the other housing 61, as seen in FIGS. 7 and 8 of the accompanying drawings. have.

One housing 51 has a square cylinder shape, and the cable holder 52 inserted and held therein has a holding portion 53 and a protrusion 54 protruding out of the housing 51. The upper surface of the to-be-held part 53 is provided with the space 56 which accommodates the cable arrangement member 55 between the housing 51. As shown in FIG. The cable arranging member 55 holds the plurality of cables C in the dielectric portion C1 where the outer skin is peeled off and exposed. In addition, the projecting portion 54 of the cable holder 52 has a cable guide groove 56 corresponding to each cable from the upper surface to the lower surface thereof, and the core wire C2 of the cable exposed from the dielectric portion C1. To guide the U-shape. And the holding | maintenance tape 57 etc. are hold | maintained in the front-end | tip part of the core wire C2 of a some cable so that each core wire C2 may not be isolate | separated irregularly.

As for the contact 62 held by the other housing 61, the metal plate maintains the flat surface, and is formed by the punching process. In FIG. 7, this contact 62 maintains the surface parallel to the ground. The contact 62 has a base 63 held by the housing 61, an elastic arm portion 64 extending in a U-shape from the base 63, and a connecting portion 65 protruding out of the housing 61. Has The base portion 63 is provided with a projection portion 63A that digs to maintain a predetermined position with respect to the housing 61, and a contact portion 64A is formed inside the tip end of the elastic arm portion 64. As shown in FIG.

These two housings 51 and 61 are joined so that the opening side of the other housing 61 is fitted to the protrusion 54 of one housing 51. As shown in FIG. 7, the core wire C2 of the cable is pressed between the contact portions 64A in the guide groove 56 to elastically contact the core wire C2 at the side end surface of the contact portion 64A. ) Is press-contacted.

In the known connector shown in Figs. 7 and 8, the core wire is exposed at the pressure-contacting portion, so that not only the core wire C2 but also the dielectric portion C1 exists in the guide groove 56 of one housing 51. As a result, the groove width of the guide groove 56 has a diameter dimension of the dielectric portion C1. Therefore, since the groove width of the guide groove 56 is too large with respect to the core wire C2, the position of the core wire C2 moves in the groove width direction at the time of pressure contact with the contact portion 64A of the contactor, which is not constant, resulting in unstable contact. In addition, since the groove width is often larger than its diameter in order to facilitate insertion of the cable (dielectric portion), the core position at the time of pressure welding becomes more unstable.

An object of the present invention is to provide an electrical connector which is easy to insert a cable and which can stabilize the pressure welding without moving the position of the cable during the pressure welding.

The electrical connector which concerns on this invention is provided with the housing of the insulating material which hold | maintains the some metal contactor which has a contact part. Then, the contact portion is brought into contact with the core of the cable to make a pressure contact connection.

In the electrical connector of this type, the present invention has a lid-shaped pressing member in which the pressing portion for pressing the cable to the contact portion is formed by freely rotating between the open position and the closed position with respect to the housing. . The pressing member is provided with a receiving groove of the cable on the surface facing the contact portion during the rotational movement. The receiving groove has an introduction portion facing the contact portion when the pressing member is in the open position, and a holding portion facing the contact portion when the pressing member is in the closed position.

The present invention of such a configuration is inserted and placed into a housing for conveying the cable in its longitudinal direction with the pressing member in the open position without exposing the core wire from the sheath. At that time, the cable is guided by the introduction of the receiving groove formed in the pressing member. Thereafter, the pressure member is rotated from the open position to the closed position. As the rotational movement of the pressing member proceeds, the engagement position with the receiving groove of the cable shifts from the introduction portion to the holding portion. As a result, when the cable is pressed into the contact portion of the contact by the pressing portion of the pressing member and is in pressure contact with the cable core wire, the cable is securely held in the holding portion, and its position is stabilized.

In the present invention, the pressing portion is formed as a groove bottom surface in the holding portion, and the groove width of the receiving groove is substantially the same as the diameter of the cable in the holding portion or slightly smaller than the diameter of the cable, so as to be larger than the groove width of the holding portion in the inlet portion. do. The cable may be a flat cable such as a flexible printed circuit board (FPC) or a flexible flat cable (FFC), and the groove width is set equally in accordance with the width of the flat cable.

Further, it is preferable that a transition portion is formed between the introduction portion and the holding portion, and the groove width of the accommodation groove gradually changes from the groove width of the introduction portion to the groove width of the holding portion.

The contact is made by processing a metal plate, the contact portion is formed to maintain a flat surface of the metal plate, it can be in the form of contacting the core wire by digging into the cable sheath from the side end surface of the contact portion.

In addition, if the receiving groove is formed on at least one of the introduction portion and the retaining portion, a substantially V-shaped groove bottom surface in which the groove is deepened toward the center in the groove width direction is more surely positioned.

Best Mode for Carrying Out the Invention Embodiments of the present invention will be described below with reference to FIGS. 1 to 6 of the accompanying drawings.

Fig. 1 is a plan view of the connector of the present embodiment, Fig. 2 is a cross-sectional view of the connector of Fig. 1, wherein (A) is a pressure member in an open position, (B) is a middle position, and (C) is a closed position, respectively. Indicates.

In the figure, the connector has a housing main body 1 and an urging member 11 made of an insulating material, and a plurality of contacts 21 made of a metal plate.

The housing main body 1 includes a main body portion 2 extending longitudinally in FIG. 1 showing a plan view, a support arm portion 3 and an elongate portion 4 extending back and forth from both ends of the main body portion 2. Doing. The contactor 21 mentioned later is hold | maintained at the said main-body part 2 by several predetermined space | interval, and protrudes back and forth from the said main-body part 2. A lid-shaped pressing member 11 is located in front of the main body portion 2, and is supported by the support arm portion 3 so as to rotate freely around the axis line 19A by the support arm portions 3 formed on both ends thereof. It is. At the end of the pressing member 11, a locking projection 11A engaging with the edge of the supporting arm portion 3 is formed, and the pressing member 11 is locked in the closed position shown in FIG.

Next, the internal structure of the connector of this embodiment is demonstrated based on FIG. 2 which is sectional drawing in the surface parallel to the plate surface of the contactor 21. FIG.

In the main body 2 of the housing main body 1, the slit-like holding hole 5 for inserting the plate-shaped contactor 21 penetrates back and forth, and is formed in multiple numbers.

The contactor 21 is made by processing a metal plate as described above, but the flat plate surface is maintained as it is. The contactor 21 has a base 22 press-fitted into the holding hole 5 of the housing main body 1, and a connecting portion 23 extending rearwardly from the base 22 and protruding from the main body portion 2. And an upper arm portion 24 and a lower arm portion 25 extending forward from the base portion 22 to form a substantially U-shape. At the lower edge of the base portion 22, a locking projection 22A for securing the position in the holding hole 5 is formed. At the distal end of the upper arm portion 24, a rotary motion support 26 having an arcuate edge is formed. The center of the circular arc-shaped edge part of this rotary motion support part 26 is located on the extension of the axis line 12A of the axial part 12 formed in the said press member 11. Further, the lower arm portion 25 is flexible in the vertical direction, and a contact portion 27 composed of two protrusions forming a triangular shape is formed on the inner edge of the tip portion.

As can be seen in Figures 2 to 4, the pressing member 11 is an arcuate lifting envelope formed by arranging the rotary motion support portion 26 forming the arcuate edge of the plurality of contacts 21 in a comb-like shape. A rotating motion guide portion 12 is formed on a concave arc guided by a surface. The pressing member 11 has an accommodating groove 13 and a pressing portion 14 for the cable C at a portion of the contact portion 21 that faces the contact portion 27.

The receiving groove 13 of the pressing member 11 has an introduction portion 13A, a transition portion 13B, and a holding portion 13C, as can also be seen in FIG. The introduction portion 13A is formed at a position opposite to the contact portion 27 of the contactor 21 when the pressing member 11 is in the open position of FIG. 2A, and the holding portion 13C is the pressing member 11. ) Is formed at a position opposite to the contact portion 27 when it is in the closed position in FIG. And the transition part 13B is formed in the transition area between the introduction part 13A and the holding part 13C.

The introduction portion 13A has a dimension such that the groove width thereof is easy to insert the cable, and in the case of FIG. 3, the portion 13A2 near the transition portion 13B has a slightly wider groove width toward the end of the cable insertion side. Lost The groove width is constant in the inner portion 13A1 in the cable insertion direction. Here, in the case of the coaxial cable with the shield wire shown in FIG. 2, this shield wire is removed and the layer of the dielectric C1 remains on the core wire C2. That is, the introduction portion 13A is formed with a groove width through which the portion of the dielectric C1 can be easily inserted in its longitudinal direction. Moreover, in the normal cable which does not have a shield wire, ie, the cable which only has a sheath on a core wire, this cable has a groove width which can be easily inserted as it is.

The holding portion 13C has a groove width dimension that is sufficient to hold the cable (dielectric C1 portion), that is, the groove width is equal to or slightly smaller than the diameter of the cable.

In addition, the transition portion 13B is formed so that the groove width gradually decreases from the introduction portion 13A toward the holding portion 13C. The manner of decreasing may be straight or curved. In this embodiment, the groove bottom of the said transition part 13B and the holding part 13C forms the press part 14. As shown in FIG.

And in this embodiment, the opening part 15 with a groove width wider than this holding | maintenance part 13C is formed in the part behind 13 C of holding parts.

As for the connector of this embodiment of the above structure, cable crimping | connection connection consists of the following methods.

① First, when the cable is a coaxial cable as shown in Fig. 2, the sheath C4 and the shield wire C3 are removed from the tip portion to expose the dielectric C1. When it is a normal cable which does not have a shield wire, you may leave it as it is.

(2) In the present embodiment, the plurality of cables are collectively soldered by soldering the holding member C5 on the metal sheet to the shield wires C3 on the upper and lower sides in the state where the shield wires C3 of the plurality of cables are arranged. It is desirable to maintain.

(3) Then, the pressing member 11 is left open, and the cable (part of the dielectric C1 exposed in the coaxial cable) is introduced from the front end portion 13A of the receiving groove 13 formed in the pressing member 11. By inserting it into the contact portion 27 of the contactor 21. At that time, the insertion of the cable into the inlet portion 13 is made very easily via the portion 13A2 near the transition portion and into the inner portion 13A1 (see Fig. 2A).

(4) Then, the pressing member 11 is rotated and brought to the closed position of Fig. 2C through the state of Fig. 2B. With this rotational movement, the cable is held by the holding portion 13C after being supported by the transition portion 13B (see Fig. 2B) (see Fig. 2C). In the holding portion 13C, the cable cannot move in the groove width direction and is held in position. In addition, the contact portion 27 penetrates into the cable and comes into contact with the core wire C2. At this time, the cable as described above has no movement in the groove width direction, that is, in the plate thickness direction of the contact, so that the contact portion 27 is stable and stable. Make contact with the core wires. In this way, the cable is press-contacted with the contactor 21 of the connector.

The present invention is not limited to the embodiment shown in Figs. 1 to 4 and can be modified. For example, in order to further stabilize the cable in the groove width direction, the accommodating groove of the pressing member is formed by forming the accommodating groove, in particular, the groove bottom surface 13C1 of the holding portion 13C as a V-shaped surface, and thus the pressing portion. As the groove bottom surface presses the cable, the force generated in the wedge-shaped portion of the groove bottom surface makes it possible to reliably maintain the center of the cable.

The shape of the receiving groove of the pressing member can be further modified, and as shown in Fig. 6A, the position of the core wire C2 is moved in the groove width direction even if the diameter of the core wire C2 of the cable C1 is a narrow diameter. In order to stabilize, the flat groove bottom 13D may be formed in the V-shaped groove portion of the holding portion 13C. Thus, when the contact portion 27 digs into the cable (dielectric) C1, in the case of FIG. 5, the cable may leave the groove bottom when the diameter is thin, but the flat groove bottom 13D of FIG. This avoids this and stabilizes the position of the core wire C2.

Further, as shown in Fig. 6B, the projection 13E may be formed so as to face the cable at the center of the groove bottom. In this case, the core C2 can be stabilized in the groove width direction by releasing the dielectric C1 of the cable to both sides of the protrusion 13E.

6C is a view in which part of the pressing member is broken. As shown in FIG. 6C, the present invention is not limited to the above-described normal cable, and the flexible printed circuit board FPC in which the circuit portion P1 is formed on the flexible substrate P, or a plurality of cables has one surface. It may be a flat cable C 'such as a flexible flat cable (FFC) that is integrally arranged to make a connection, in which case the accommodating groove 13 of the pressing member 11 has a wide one groove for accommodating FPC or FFC. Becomes

As described above, in the present invention, the pressing member has a receiving groove for introducing and maintaining the cable, the receiving groove easily accommodates the cable at the inlet to move the cable in the groove width direction along the rotational movement of the pressing member. The contact portion of the contactor is very reliably and stably contacted with the core wire since it is held so as not to hold it. In this way, the cable can be easily inserted and the work becomes easy, and stable press contact can be automatically performed by the rotational movement of the pressing member. In addition, since the contact portion digs into the cable sheath and presses it, the work of removing part of the sheath covering the core wire is also unnecessary, which also simplifies the work.

Claims (7)

An electrical connector having a housing made of an insulating material for holding a plurality of metal contacts having a contact portion, wherein the contact portion is in contact with the core wire of the cable. Has a lid-shaped pressing member having a pressing portion for freely rotating between the open position and the closed position with respect to the housing and pressing the cable to the contact portion by a rotating movement to the closed position, The pressing member has a receiving groove of the cable is formed on the surface facing the contact portion during the rotational movement, And the receiving groove has an introduction portion facing the contact portion when the pressing member is in the open position, and a holding portion facing the contact portion when in the closed position. 2. The holding portion as claimed in claim 1, wherein the pressing portion is formed as a groove bottom surface in the holding portion, and the groove width of the receiving groove has a dimension substantially equal to the diameter of the cable in the holding portion or slightly smaller than the diameter of the cable. An electrical connector, characterized in that it is larger than the groove width. 2. The cable according to claim 1, wherein the cable is a flat cable, and the pressing portion is formed as a groove bottom surface in the holding portion, and the groove width of the receiving groove is about the same as or more than the width of the flat cable in the holding portion. An electrical connector, characterized by a size slightly smaller than the groove width of the holding portion at the inlet portion. The said accommodating groove is a transition part formed between an introduction part and a holding | maintenance part, The groove width of this transition part changes gradually from the groove width of an introduction part to the groove width of a holding part of Claim 1 thru | or 3 characterized by the above-mentioned. Electrical connectors. 3. The contactor according to claim 1 or 2, wherein the contactor is made by processing a metal plate, and the contact part is formed to maintain a flat plate surface of the metal plate, and is made to come into contact with the core wire through the cable sheathing at the side end surface of the contact part. There is an electrical connector. The electrical connector according to any one of claims 1 to 3, wherein the accommodating groove forms an almost V-shaped groove bottom surface in which the groove deepens toward the center of the groove width direction in at least one of the introduction portion and the holding portion. . 5. The electrical connector according to claim 4, wherein the accommodation groove has an almost V-shaped groove bottom surface in which the groove deepens toward the center of the groove width direction on at least one of the introduction portion and the holding portion.

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