JP4225236B2 - Connector for wire connection - Google Patents

Description

  The present invention relates to a connector for connecting electric wires, and particularly to a connector having a fitting lock structure for connecting a plurality of electric wires side by side.

2. Description of the Related Art Conventionally, in an electronic device that handles a plurality of signals such as a computer, a connector including a plug and a receptacle for connecting a band-shaped flat cable having a plurality of electric wires together has been used (for example, see Patent Document 1). ). In such a connector, one of the plug and the receptacle, for example, the plug is connected to an electric wire, and the other receptacle is used by soldering to a circuit on a circuit board. At this time, there is one that uses a holding bracket to mechanically fix the receptacle to the circuit board, and this holding bracket is also used to mechanically fix the plug to the receptacle and to ground the metal cover of the plug It is also used as.
JP-A-7-130415

  However, the connector using the holding metal as described above has the following problems. A receptacle provided with such a holding metal fitting will be described with reference to FIG. The housing 95 is a resin molded product for holding a plurality of electrodes side by side in the longitudinal direction, and only one end portion in the longitudinal direction is shown in FIG. In order to fix the housing 95 to the circuit board, a holding metal fitting 90 is used. The holding metal fitting 90 is similarly used at the other end (not shown), and both ends of the housing 95 are fixed by the holding metal fitting 90, respectively. The holding metal fitting 90 has a foot portion 92 for soldering to the substrate and a hanging portion 93 that rises from the foot portion and falls forward. The hanging portion 93 is provided with protrusions 93 a that are left and right. In addition, a protrusion 91 is provided at the rising portion for fitting and locking a plug that is approached and joined from above. The holding metal fitting 90 is press-fitted into a fitting hole 96 provided in the housing, and is integrated with the housing 95 as shown in FIG. 6B to complete the receptacle 9.

  The receptacle 9 formed in this manner press-fits the holding metal fitting 90 so as to push the housing of the resin molded product, so that a crack 97 may occur as shown in FIG. 6B. Further, as shown in FIG. 7, this holding metal fitting 90 has three bent portions C1, C2 and C3, so that the flatness of the foot portion 92 is likely to vary due to bending variations, and soldering with the circuit board PCB is likely to occur. In addition, extra solder is consumed. Further, according to such a three-fold bending of the holding metal 90, the final divided section after the holding metal 90 is formed by pressing from a plate material and plated is the end surface 92 a of the foot 92. Since the end surface 92a is not soldered, there is a problem that the wetness of the solder in this portion is deteriorated.

  The present invention solves the above-described problem, and can securely fix the receptacle to the substrate without damaging it. The shell and the body are fitted with a simple configuration to form a plug, and the shell and the receptacle are fitted. Then, it aims at providing the connector for electric wire connection provided with the mechanism which carries out the fitting lock of three parties reliably by simple structure.

In order to achieve the above object, the invention of claim 1 is directed to an electrode for electrically connecting an electric wire and electrically connecting to the outside, a body holding the electrode, a plug having a shell covering the body, and an electrode of the plug And a receptacle having a housing for holding the electrode, wherein the shell is formed of a plate material and is engaged with the engaged portion of the body. And a second engaging portion for engaging with the engaged portion of the receptacle, and the first and second engaging portions are a projecting piece cut and raised from the plate material and the projecting piece. Are formed close to each other using an opening formed by cutting and raising.

According to a second aspect of the present invention, in the connector according to the first aspect, the receptacle includes a holding metal member made of a plate material for fixing the housing to a board loaded with the connector, and the housing includes the holding metal member. The holding bracket is configured to leave a part of the plate material as a foot part for fixing to the substrate, bend and raise the other part, and the bent part is perpendicular to the foot part. An opening edge that is inserted into the fitting groove from the direction, is fixed to the housing so that the opening provided in the bent raised portion sandwiches the convex portion provided in the groove, and the opening provided in the bent raised portion is closed And extending to the foot.

According to a third aspect of the present invention, in the connector according to the second aspect, the holding fitting further folds the upper part of the bent raised portion to form a hanging piece, and the second engagement of the shell on the outer surface of the hanging piece. a projection to be engaged portion to be engaged with the engaging portion formed, said the suspended piece is obtained by forming a slope for lure the shell.

  According to the first aspect of the present invention, the protrusion is formed by cutting and raising the protruding piece from the plate member and the two kinds of engaging portions for fitting and locking the shell and the body, and the plug and the receptacle, respectively. Since the openings are formed close to each other, the engagement space can be reduced as compared with the case where these openings are formed at different locations.

  According to the second aspect of the present invention, the bent metal raised portion is inserted into the fitting groove, and the opening provided in the bent raised portion is press-fitted so as to sandwich the convex portion provided in the groove, thereby holding the holding metal housing. It is composed of a single bend from the press-fit part to the foot part, and the influence on the flatness of the foot part due to bending variation is small, and the compressive force that press-fits the convex part provided in the housing It is only given to the housing, it does not spread out, and the housing does not crack. In addition, it is easy to provide a cross-section that separates from the plate after plating the holding bracket, other than the end face of the foot, and when the foot is soldered to the substrate, there is no non-plated part in the foot and soldering Is more certain.

  According to the invention of claim 3, the shell and therefore the plug and the receptacle can be easily engaged.

  Hereinafter, an electric wire connecting connector according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows a state in which the plug 4 and the receptacle 7 of the connector 10 of the present invention are separated, and a state in which the plug 4 and the receptacle 7 are joined. As shown in FIG. 1A, the plug 4 has a rectangular shape that is long to the left and right, a plurality of electrodes (not shown) that connect the electric wires W made up of a plurality of electric wires, and a body 2 that holds the electrodes. And a shell 3 made of an electric conductor covering these. The body 2 and the shell 3 are engaged at an engagement portion P provided at the left and right ends. A shell 3 covers and protects the electrode of the plug 4.

  The receptacle 7 has a plurality of electrodes 5 that electrically connect the electrodes of the plug, and a housing 6 that holds the electrodes 5. At the left and right ends of the receptacle 7, a holding metal fitting 8 having a protrusion (engaged portion) 81 is provided. The protrusion 81 is engaged with an engaging receptacle engaging edge 32 provided on the shell 3 as shown as an engaging portion Q in FIG. In this way, when the plug 4 and the receptacle 7 are fitted, the plug 3 side shell 3 and the receptacle 7 side holding fitting 8 are hooked and locked, and at the same time, the shell 3 and the holding fitting 8 are electrically connected. Is done.

  The electrode of the plug 4 is guided below the body 2 and connected to the electrode 5 of the receptacle 7 when the connector 10 is joined. The electrode 5 of the receptacle 7 is extended to the same level as the lower surface of the receptacle 7 to form a soldered terminal 51. The lower surface of the foot portion 82 of the holding metal fitting 8 is at the same level as the lower surface of the soldering terminal 51. When the soldering terminal 51 and the foot 82 are soldered to a board (not shown) on which the receptacle 7 is mounted, and the plug 4 is joined thereto and fitted and locked by the engaging portion Q, the electric wire W and the board The circuit is electrically connected, and the shell 3 is electrically connected to the electrode (usually ground) of the substrate through the holding metal fitting 8.

  Next, details of the engaging portion P of the plug 4 will be described. 2 (a) and 3 (a) show a state where the shell 3 is removed from the plug 4, and FIGS. 2 (b) and 3 (b) show the plug 4 in a use state where the electric wire W is connected. . The shell 3 is formed of a plate material and is engaged with a body engaging edge (first engaging portion) 31 for engaging with an engaging protrusion 21 provided on the body 2 and an engaging protrusion 81 of the receptacle 7. Receptacle engaging edge (second engaging portion) 32.

  The body engaging edge 31 is a window edge of a window formed on the protruding piece 30 cut and raised from the plate material, and the receptacle engaging edge 32 is an opening (recessed portion) formed by cutting and raising the protruding piece 30. It consists of an opening edge. The engagement portion P of the plug 4 is formed by hanging a body engagement edge 31 on a protrusion (engaged portion) 21 of the body 2. An outward warp is given to the lower end of the projecting piece 30, an inclination is provided on the upper part of the projection 21, and these can be smoothly engaged (patched) using the elasticity of the projecting piece 30. The engaging portion P may be formed so as to bite the lower end of the protrusion 21 by bending the lower end of the protrusion 30 inward without forming a window in the protrusion 30. Alternatively, a recess may be formed instead of the protrusion 21, a protrusion that fits into the recess may be formed on the projecting piece 30, and the engagement portion P may be formed so that these slide and fit. The fitting lock between the plug 4 and the receptacle 7 is performed by the engaging portion Q.

  The body engagement edge 31 and the receptacle engagement edge 32 in the shell 3 are formed close to each other, and a space-saving engagement structure is achieved. 1 and 2 show an electrode 1 electrically connected to the electric wire W. The electrode 1 extends to the side electrode 11 and the bottom electrode, and is electrically connected to the receptacle 7 as described above.

Next, the holding metal fitting 8 that forms the engaging portion Q between the shell 3 and the receptacle 7 will be described in detail. 4 (a) and 4 (b) show the holding metal fitting 8, FIG. 5 (a) shows the structure of the receptacle 7 for attaching the holding metal fitting 8, and FIG. 5 (b) shows the state where the holding metal fitting 8 is attached. The receptacle 7 is shown. As shown in FIGS. 4 (a) and 4 (b), the holding metal fitting 8 has a bent and raised portion 83 in which a part of a substantially rectangular plate material is left as a soldered foot portion 82 and the other portion is bent and raised. In the upper part of the part 83, left and right rising surfaces are left as wing-shaped pieces 84, and a hanging piece 85 is formed by bending the center part by approximately 180 °, and an opening 86 is formed in the bent raising part 83. A bending slope R for guiding the shell 3 to the outer surface and a protrusion 81 for engaging and locking with the shell 3 are formed.

  The upper end of the wing-shaped piece 84 has a section 84a that is cut and separated from the plate material after the holding metal fitting 8 is formed and plated. Since the entire surface of the foot 82 for soldering the substrate or the like is plated, the section 84a is not plated, but the problem due to the lack of plating is not related to soldering. Absent.

  As shown in FIG. 5 (a), fittings for inserting the holding metal fitting 8 in the direction orthogonal to the longitudinal direction are inserted into the left and right ends in the longitudinal direction of the housing 6 of the receptacle (the left end portion is shown in the figure). The joint groove 62 is formed in a shape in which the central portion is opened, that is, in a shape in which the holding metal fitting 8 is held at the end of the housing 6. Further, a convex portion 61 is provided at the center portion of the fitting groove 62. The holding metal fitting 8 is inserted into the fitting groove 62 from above, and is fitted and fixed so that the opening 86 provided in the bent raised portion 83 sandwiches the convex portion 61 provided in the groove. The minimum lateral width a of the opening 86 is slightly narrower than the lateral width b of the convex portion 61, and the convex portion 61 is press-fitted into the opening 86.

  As described above, the holding metal fitting 8 is fixed to the housing 6 at the bending raising portion 83 formed by bending the foot portion 82 once, so that the flatness of the foot portion 82 is less affected by the bending variation. Further, the housing 6 is not cracked because the convex portion 61 of the housing 6 is sandwiched, that is, pressed in the compressing direction.

  The present invention is not limited to the above-described configuration, and various modifications can be made. Further, the names of the plug and the receptacle are not limited to the above-mentioned usage, and the side to which the electric wire W is connected can be called a receptacle, and the other side to which this is connected can be called a plug.

(A) is a perspective view of the plug and receptacle of the connector for electric wire connection which concern on one Embodiment of this invention, (b) is a perspective view of the connector with which the said plug and receptacle were joined. (A) is a disassembled perspective view of the plug of a connector same as the above, (b) is a perspective view of the plug. (A) is a disassembled perspective view of the plug of a connector same as the above, (b) is a perspective view of the plug. (A) is a side view of the same holding metal fitting, (b) is the perspective view. (A) is a fragmentary perspective view which shows the mode of mounting | wearing with the holding metal fitting in the receptacle of a connector same as the above, (b) is a partial perspective view of the state in which the holding metal fitting is attached to the receptacle. (A) is a fragmentary perspective view which shows the mode of mounting | wearing with the holding metal fitting in the receptacle of the conventional connector, (b) is a partial perspective view of the receptacle which attached the holding metal fitting. The fragmentary side view of the holding metal fitting mounting part in the receptacle of the conventional connector.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Electrode 2 Body 3 Shell 4 Plug 5 Electrode 6 Housing 7 Receptacle 8 Holding metal fitting 21 Protrusion (engaged part)
30 Projection piece 31 Body engagement edge (first engagement portion)
32 Receptacle engagement edge (second engagement portion)
61 convex part 62 fitting groove 81 protrusion (engaged part)
82 Leg 83 Bending part 85 Suspended piece 86 Opening P Engagement part Q Engagement part R Slope W Electric wire

Claims (3)

A receptacle having an electrode for electrically connecting an electric wire and electrically connecting to the outside, a body holding the electrode, a plug having a shell covering the body, an electrode electrically connecting to the electrode of the plug, and a housing holding the electrode In a connector with
The shell is formed of a plate material, and includes a first engaging portion for engaging with an engaged portion of the body, and a second engaging portion for engaging with an engaged portion of the receptacle. The first and second engaging portions are formed close to each other using a projecting piece cut and raised from the plate material and an opening formed by cutting and raising the projecting piece. Connector. Before SL receptacle, a holding bracket comprising a plate for fixing the housing to the substrate to which the present connector is loaded,
The housing includes a fitting groove for fixing the holding metal fitting,
The holding bracket leaves a part of the plate material as a foot part for fixing to the substrate, bends and raises the other part, and inserts the bent part into the fitting groove from a direction perpendicular to the foot part. The opening provided in the bent raised portion is fixed to the housing so as to sandwich the convex portion provided in the groove, and the opening provided in the bent raised portion has a closed opening edge and extends to the foot portion. The connector according to claim 1 . The holding metal part further folds the upper part of the bent raised part to form a hanging piece, and a protrusion serving as an engaged part that engages with the second engaging part of the shell is formed on the outer surface of the hanging piece. 3. The connector according to claim 2, wherein a slope for attracting the shell is formed in the hanging piece.

Images