JP2018010720A - Electric connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electric connector improved in sealability as well as tensile strength.SOLUTION: Each of electric connectors 1, 2, to which a cable 21 is connected and a mating connector is fitted, comprises: a contact 11 to which an internal conductor 22 of the cable 21 is connected; an insulation block 12 by which the contact 11 is held; a shell 13 holding the insulation block 12; a coupling 14 held by the shell 13 and fitted to a mating connector; a nut 15 locked on the shell 13; a sleeve 16 holding the cable 21 therein; and a caulk ring 17 caulking a sleeve 16 from outer periphery. The sleeve 16 is caulked by a caulk ring 17 while a braid fold part 26 formed by folding a metal braid layer 24 and placing it over an external face of a sheath 25 is located therein. Thereby, the nut 15 holding the sleeve 16 is connected to the shell 13, and the sleeve 16, nut 15, shell 13 and coupling 14 are integrated and conducted.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an electrical connector used in electrical equipment and electronic equipment such as robots and communication devices.

  2. Description of the Related Art Conventionally, an electrical connector having a contact to which an inner conductor of a cable is connected is used as an electrical connector used in electrical equipment and electronic equipment such as robots and communication devices. These electrical connectors are brought into contact with the mating contact by fitting with the mating electrical connector to conduct the cables (see, for example, Patent Document 1).

  In the electrical connector as described above, the cable whose inner conductor is connected to the contact is subjected to processing such as caulking or crushing from the outer periphery, thereby increasing the tensile strength of the cable and preventing the cable from being disconnected from the electrical connector. There is.

JP 2012-43763 A

  However, in the conventional electrical connector, since it is necessary to ensure the electrical characteristics of the cable, there has been a demand for an electrical connector structure in which the shield strength is further improved while increasing the tensile strength of the cable.

  Accordingly, the problem to be solved by the present invention is to provide an electrical connector having improved shielding performance while increasing tensile strength.

  In order to achieve the above object, an electrical connector of the present invention is connected to a cable having an inner conductor and an insulating layer, a metal braided layer, and a sheath disposed so as to cover the outer periphery of the inner conductor. An electrical connector that is detachably fitted, the required number of contacts to which the inner conductor is connected, an insulating block in which the contacts are held in an arrayed state, and a fitting side on which the mating connector is fitted And a shell that holds the insulating block so as to surround the outer periphery of the insulating block, and a coupling that is held by the shell and has a fitting means with the mating connector on the fitting side. A nut having engagement means connected to a portion of the shell opposite to the side where the coupling is located, and the nut inserted from the shell side with respect to the nut A sleeve having an enlarged cylindrical portion that is abutted and locked to the inner surface, and holds the inserted cable portion inside; and a caulking ring that caulks the sleeve in a state of holding the cable portion from the outer periphery; The sleeve is folded by the caulking ring while keeping the braided folded part that is folded back on the outer surface of the sheath by folding the metal braided layer, and is in contact holding state with the braided folded part The nut that holds the sleeve is connected to the shell, and the sleeve that contacts and holds the braided folded portion of the cable is integrated with the nut, the shell, and the coupling. Form continuity.

  The above electrical connector shields the cable transmission path by connecting the nut to the shell and integrating the sleeve, nut, shell and coupling that are in contact with the braided folded part to form a continuity. Can do. Further, since the sleeve is caulked from the outer periphery by the caulking ring and the sleeve is held in contact with the braided folded portion, problems such as disconnection of the cable from the electrical connector due to external force caused by pulling the cable can be prevented. . Therefore, it is possible to provide an electrical connector that can improve the shielding performance while increasing the tensile strength.

  Further, the caulking ring preferably has at least one projecting portion projecting to the outer peripheral side in a state where the sleeve is caulked. Thereby, since the holding force with which the sleeve holds the cable is improved, it is possible to prevent problems caused by the cable being pulled more.

  Furthermore, it is preferable to have a cover member that is positioned and held by the protrusion and covers the sleeve and the nut. In this way, since the cover member is positioned and held by the protrusions, it is possible to suppress the displacement of the cover member with respect to the sleeve and the nut.

  Moreover, it is preferable that the said cover member is integrally formed as electrical connectors, such as the said projection part, the said sleeve, the said nut, and the said cable. Thus, since the cover member is integrally formed (integrated molding), the positional displacement of the cover member with respect to the sleeve and the nut can be further suppressed.

  Further, the cover member has a divided structure of one divided body and the other divided body, and the protrusion is inserted into at least one of the one divided body and the other divided body. It is preferable that the recessed part to be formed is formed. Thus, since the recessed part is formed, the position shift of the cover member with respect to the sleeve and the nut can be further suppressed by inserting the protruding part.

  Thus, according to the present invention, it is possible to provide an electrical connector having improved shielding performance while increasing tensile strength.

It is a figure for showing composition of an electric connector concerning a 1st embodiment, Drawing 1 (a) is a perspective view which looked at an electric connector concerning a 1st embodiment from one side, and Drawing 1 (b) It is the perspective view which looked at the electrical connector which concerns on 1st Embodiment from the other side. It is a disassembled perspective view of the electrical connector which concerns on 1st Embodiment. It is a figure for showing the composition of the cable connected to the electrical connector concerning a 1st embodiment, and Drawing 3 (a) is a perspective view showing the cable connected to the electrical connector concerning a 1st embodiment, FIG.3 (b) is a perspective view which shows the state which turned up the metal braiding layer of the cable connected to the electrical connector which concerns on 1st Embodiment. FIG. 4A is a perspective view showing a state in which the sleeve is caulked by the caulking ring according to the first embodiment, and FIG. 4B is a diagram for illustrating the caulking ring of the electrical connector according to the first embodiment. ) Is a plan view showing a state in which the sleeve is caulked by the caulking ring according to the first embodiment. It is a perspective view which shows the cover member of the electrical connector which concerns on 2nd Embodiment. It is a perspective view which shows the cover member of the electrical connector which concerns on 3rd Embodiment.

  Hereinafter, an electrical connector according to an embodiment of the present invention will be described with reference to the drawings. In addition, the electrical connector which concerns on this embodiment is an electrical connector which conduct | electrically_connects between apparatuses and apparatuses via a cable, when the other party electrical connector is fitted.

[1. First Embodiment]
First, with reference to FIG.1 and FIG.2, schematic structure of the electrical connector 1 which concerns on 1st Embodiment is demonstrated. FIG. 1 is a diagram for illustrating a schematic configuration of the electrical connector 1 according to the first embodiment. FIG. 1A is a perspective view of the electrical connector 1 as viewed from one side (arrow A side in FIG. 1). FIG. 1B is a perspective view of the electrical connector 1 viewed from the other side (the arrow B side in FIG. 1). FIG. 2 is an exploded perspective view of the electrical connector 1 according to the present embodiment.

[1-1. Schematic configuration of electrical connector]

  As shown in FIGS. 1 and 2, the electrical connector 1 has a required number of contacts 11 to which a cable 21 is connected, an insulating block 12 in which the contacts 11 are held in an arrayed state, and an insulating block 12 held inside. A coupling 14 having a fitting means (fitting projection 143 to be described later) between the shell 13 and a mating connector (not shown), and an engaging means (shell engaging part 151 to be described later) coupled to the shell 13. ), A sleeve 16 for holding the inserted cable 21 inside, and a caulking ring 17 for caulking the sleeve 16 from the outer periphery.

  The contact 11 is formed by pressing or cutting a metal such as brass, beryllium copper, phosphor bronze, etc., and the other contact (not shown) contacts one side (arrow A side in FIG. 1). An insulating block is provided between the contact portion 111, the connection portion 112 to which the inner conductor 22 exposing the cable 21 described later is connected to the other side (the arrow B side in FIG. 1), and the contact portion 111 and the connection portion 112. 12 and a lance 113 that locks in the inside. In this embodiment, the contact 11 is held on the insulating block 12 by the lance 113. However, any contact may be used as long as the contact 11 can be held on the insulating block 12, for example, press-fitting or welding.

  When the lance 113 is inserted into an insertion hole 121 of the insulating block 12 described later, the lance 113 is bent and deformed downward. When the insertion of the contact 11 is completed, the bending deformation is eliminated, and a locking portion (not shown) in the insertion hole 121 is formed. The contact 11 is locked to the insulating block 12 by locking.

  The connection part 112 and the cable 21 may be connected to any structure (method) as long as the cable 21 and the connection part 112 can be connected. It may be a connection by attaching.

  The insulating block 12 is made of an electrically insulating plastic such as polybutylene terephthalate (PBT), polyamide (66PA, 46PA), liquid crystal polymer (LCP), polycarbonate (PC), polyphenylene sulfide (PPS), or a synthetic material thereof. It is formed into a shape.

  The insulating block 12 includes an insertion hole 121 through which the contact 11 can be inserted from one side to the other side, and a fitting side A (from which one end of the insulating block 12 is fitted to the mating connector A ( A groove 122 extending to the arrow A side in FIG. 1 is formed. The groove 122 determines a position to be connected to the shell 13 by inserting a convex portion (not shown) formed inside the shell 13, and when the insertion of the convex portion is completed, the insulating block 12 is connected to the shell 13. Retained.

  The shell 13 is arranged on the fitting side A so as to surround the outer periphery of the insulating block 12 to hold the insulating block 12, and the coupling locking portion 132 to which the coupling 14 is locked. A nut coupling portion 133 to which the nut 15 is screwed, and a sleeve coupling portion 134 to which the end abutting portion 166 of the sleeve 16 abuts when the nut 15 to which the sleeve 16 is engaged is coupled to the nut coupling portion 133. have.

  The block holding part 131 has a positioning protrusion 135 that protrudes to the outer peripheral side and is inserted into a recess (not shown) formed in the mating connector to determine the position where the mating connector is fitted. doing.

  The coupling 14 includes a shell locking portion 142 that is locked to the coupling locking portion 132 of the shell 13 on the cable connection side B (the arrow B side in FIG. 1) to which the cable 21 is connected. The shell 14 is held by the shell 13 by locking the shell locking portion 142 to the coupling locking portion 132.

  Further, the coupling 14 has a fitting convex portion 143 which is a fitting means with the mating connector on the fitting side A. When the mating connector is fitted, the fitting convex portion 143 is inserted into a locking hole (not shown) formed in the mating connector and holds the mating state of the mating connector.

  In the state where the coupling 14 is held by the shell 13, a fitting port 145 (see FIG. 1A) that is a gap is formed between the coupling 14 and the shell 13. A coupling (not shown) of the mating connector is inserted into the mating port 145 when the electrical connector 1 is mated with the mating connector.

  The nut 15 has a shell engaging portion 151 which is an engaging means connected to a portion of the shell 13 opposite to the side where the coupling 14 is located (cable connection side B). The nut 15 is engaged with the shell 13 by screwing the shell engaging portion 151 to the nut connecting portion 133. In addition, a sleeve locking portion 152 is formed at the inner end of the nut 15 on the cable connection side B so that a locking protrusion 165 of a diameter-expanded cylindrical portion 161, which will be described later, abuts and the shell 13 is locked. ing.

  The sleeve 16 has a substantially cylindrical shape, and includes an enlarged diameter cylindrical portion 161 through which the cable 21 is inserted on the fitting side A, and a cable holding portion 162 that holds the cable 21 inside on the cable connection side B. Have. The diameter of the enlarged diameter cylindrical portion 161 is larger than the diameter of the cable holding portion 162.

  As will be described later, the cable 21 held inside the sleeve 16 has the metal braid layer 24 folded back and covered on the outer surface of the sheath 25, and the metal braid layer 24 is folded inside the cable holding portion 162. The braid folding part 26 is located (see FIG. 4 described later).

  The above-mentioned enlarged-diameter cylindrical portion 161 protrudes outward on the outer periphery of the end portion and abuts with a sleeve locking portion 152 which is the inner surface of the nut 15 to lock the shell 13 with the nut 15. And an end abutting portion 166 that abuts against the sleeve coupling portion 134 when the nut 15 is coupled to the shell 13.

  The cable holding portion 162 has a caulking portion 167 that is caulked from the outer periphery by the caulking ring 17 while a braided folding portion 26 of the cable 21 described later is positioned inside.

  The caulking ring 17 is formed in a C shape having a notch portion 171 in which a part of the annular shape is cut out. As will be described later, the braided folded portion 26 obtained by caulking the sleeve 16 from the outer periphery and folding the metal braided layer 24 back. In contrast, the sleeve 16 is held in a contact holding state. That is, the caulking portion 167 is caulked by the caulking ring 17 to bring the sleeve 16 and the braided folding portion 26 into contact with each other.

  The shell 13, the coupling 14, the nut 15, and the sleeve 16 are formed by casting and cutting a metal such as zinc die cast or aluminum die cast. Then, the nut 15 is connected to the shell 13, and the sleeve 16, the nut 15, the shell 13, and the coupling 14 that are held in contact with the braided folded portion 26 are integrated to form conduction, whereby the transmission path of the cable 21. Can be shielded.

[1-2. Caulking sleeve with caulking ring]
Next, caulking of the sleeve 16 by the caulking ring 17 will be described with reference to FIGS. 3 and 4. FIG. 3 is a view for showing the cable 21 connected to the electrical connector 1 according to the first embodiment, FIG. 3A is a perspective view showing the cable 21, and FIG. 3 is a perspective view showing a state in which a metal braid layer 24 of a cable 21 is folded back. FIG. FIG. 4 is a view for showing the caulking ring 17 according to the first embodiment, and FIG. 4A is a perspective view showing a state in which the sleeve 16 is caulked by the caulking ring 17 according to the first embodiment. FIG. 4B is a plan view showing a state in which the sleeve 16 is caulked by the caulking ring according to the first embodiment.

  As described above, the caulking ring 17 connects the cable 21 to the electrical connector 1 by holding the sleeve 16 in contact with the braided folded portion 26 obtained by caulking the sleeve 16 from the outer periphery and folding the metal braided layer 24. To do.

  Here, the configuration of the cable 21 connected to the electrical connector 1 will be described with reference to FIG. 3A and FIG. As shown in FIGS. 3A and 3B, the cable 21 covers the inner conductor 22, the insulating layer 23 disposed so as to cover the outer periphery of the inner conductor 22, and the outer periphery of the insulating layer 23. The metal braid layer 24 disposed in this manner and the sheath 25 disposed so as to cover the outer periphery of the metal braid layer 24.

  Then, the metal braid layer 24 on one end side of the cable 21 is folded and folded on the outer surface of the sheath 25. That is, the metal braided layer 24 and the sheath 25 are folded back from the one end side of the cable 21 to the other end side to expose the insulating layer 23, and the folded metal braided layer 24 is covered on the outer peripheral surface of the sheath 25 to form the braided folded portion 26. Form.

  The inner conductor 22 is exposed at one end side of the insulating layer 23 exposed by folding the metal braid layer 24 and the sheath 25, and the inner conductor 22 is connected to the connection portion 112 of the contact 11.

  The braid folding portion 26 is held inside the cable holding portion 162 by inserting the cable 21 into the sleeve 16 and folding the metal braid layer 24 and the sheath 25. Then, with the braided folded portion 26 positioned inside the cable holding portion 162, the caulking ring 17 is pressed with a tool or the like from the vertical direction X (the X direction in FIG. 4A), and the caulking portion 167 of the sleeve 16 is caulked. By crimping, the projecting portions 172 a and 172 b are formed on the caulking ring 17, and the sleeve 16 is brought into contact with the braided folded portion 26.

  More specifically, as shown in FIGS. 4A and 4B, when the caulking portion 167 of the sleeve 16 is caulked with the caulking ring 17, the caulking ring 17 has a protruding portion protruding to the outer peripheral side. 172a and 172b are formed. That is, the caulking ring 17 has protrusions 172a and 172b that protrude in the left-right direction Y (Y direction in FIG. 4A) intersecting the up-down direction X in a state where the sleeve 16 is caulked.

  When the caulking portion 167 is caulked with the caulking ring 17 by being pressed with a tool or the like in this manner, the caulking ring 17 has the protrusions 172a and 172b with the sleeve 16 being caulked.

[1-3. Assembly method of electrical connector]
Next, a method for assembling the electrical connector 1 described above will be described with reference to FIGS. First, the connection portion 112 of the contact 11 is connected to the inner conductor 22 where one end side of the insulating layer 23 of the cable 21 is exposed.

  Next, the contact 11 to which the internal conductor 22 is connected is inserted into the insertion hole 121 of the insulating block 12. When the insertion of the contact 11 is completed, the lance 113 of the contact 11 is locked in the insertion hole 121.

  Next, the cable 21 in a state where the contact 11 is inserted and the internal conductor 22 is held is inserted from the block holding part 131 side to the cable connection side B inside the shell 13. Specifically, the cable 21 is inserted from one end side of the shell 13 to the other end side, and a convex portion (not shown) formed inside the shell 13 is inserted into the groove portion 122 of the insulating block 12 to thereby insert the insulating block. The position where 12 and shell 13 are connected is determined. When the convex portion is further inserted into the cable connection side B and the insertion is completed, the insulating block 12 is held inside the shell 13.

  Next, the coupling 14 is disposed so as to surround the outer periphery of the fitting side A of the shell 13 by locking the shell locking portion 142 of the coupling 14 to the coupling locking portion 132 of the shell 13.

  Further, the sleeve 16 and the nut 15 are inserted into the cable 21 through which the shell 13 is inserted. Further, the braided folded portion 26 formed by folding the metal braided layer 24 on one end side of the cable 21 onto the outer surface of the sheath 25 is positioned inside the cable holding portion 162.

  Next, the sleeve 16 through which the cable 21 is inserted is inserted from the shell engaging portion 151 of the nut 15 to the cable connection side B, and the locking projection 165 of the sleeve 16 is locked to the sleeve locking portion 152 of the nut 15. As a result, the sleeve 16 is held on the nut 15.

  The nut 15 is locked to the shell 13 by screwing the shell engaging portion 151 of the nut 15 to the nut connecting portion 133 of the shell 13. When the nut 15 is locked to the shell 13, the end contact portion 166 of the sleeve 16 contacts the nut coupling portion 133.

  Further, the caulking ring 17 is positioned on the outer periphery of the caulking portion 167, and the caulking ring 167 is caulked by pressing the caulking ring 17 from the vertical direction X with a tool or the like. When the caulking portion 167 is caulked by the caulking ring 17, projections 172 a and 172 b are formed on the caulking ring 17, and the sleeve 16 is brought into contact with the braided folding portion 26.

  In this way, the nut 15 that holds the sleeve 16 is connected to the shell 13, and the sleeve 16 that contacts and holds the braided folded portion 26 of the cable 21 is integrated with the nut 15, the shell 13, and the coupling 14. Form. As described above, since the sleeve 16 is in contact with the braided folded portion 26, the transmission of the cable 21 is achieved by integrating the sleeve 16, the nut 15, the shell 13, and the coupling 14. The path can be shielded. Further, by caulking the sleeve 16 so that the caulking ring 17 has the protrusions 172a and 172b, the holding force for the sleeve 16 to hold the cable 21 is improved, and the cable 21 is pulled to the cable connection side B more. It is possible to prevent problems caused by

  Then, the electrical connector 1 assembled as described above can be electrically connected to the cable 21 and a cable (not shown) connected to the mating connector by fitting with the mating connector. Specifically, when the mating connector is inserted into the mating port 145, the mating protrusion 143 is inserted into a locking hole (not shown) formed in the mating connector, and the electrical connector 1 and the mating side are inserted. The fitting state with the connector is maintained.

  The contact 11 to which the inner conductor 22 of the cable 21 is connected may be inserted after the insulating block 12 and the shell 13 are connected. That is, the order of assembling the electrical connector 1 is not limited to the order described above, and can be changed as appropriate.

[2. Second Embodiment]
Next, a schematic configuration of the electrical connector 2 according to the second embodiment will be described with reference to FIG. The electrical connector 2 according to the second embodiment has a cover member 19, which is integrally formed with the protrusion 172 (172a, 172b), the sleeve 16, the nut 15, the cable 21, and the like. There are other configurations similar to those of the first embodiment. Therefore, in the following description, the description of the same configuration and the like as those of the electrical connector 1 according to the first embodiment will be omitted, and the same components as those of the electrical connector 1 according to the first embodiment will be denoted by the same reference numerals. I will explain. FIG. 5 is a perspective view showing the cover member 19 according to the second embodiment.

  The cover member 19 is formed by clamping one mold (not shown) and the other mold and filling a space in the mold where the cover member 19 is formed with resin. The cover member 19 is formed by first including a sleeve 16 in which the caulking portion 167 is caulked by the caulking ring 17 and held in contact with the braided folded portion 26, and a nut 15 that holds the sleeve 16. A connector assembled like the connector 1 and connected to the cable 21 is placed on a mold.

  Next, the cover member 19 is integrated with the electrical connector 1 including the sleeve 16 and the nut 15 by moving the other mold to the mold clamping position with respect to one mold and filling the mold with resin. Form. Specifically, the space that forms the shape of the cover member 19 in the mold clamped mold is filled with an electrically insulating plastic such as liquid crystal polymer (LCP), polycarbonate (PC), or a synthetic material thereof. Thus, the cover member 19 is integrally formed as the electric connector 2 such as the above-described protrusion 172, sleeve 16, nut 15, cable 21 and the like.

  As described above, the cover member 19 integrally formed by filling the inside of the mold with the resin includes the cable protection portion 191 that covers the cable 21 and the cover that covers the sleeve 16 and the nut 15. A main body 192 is formed.

  The cable protection portion 191 is formed with a bent portion 195 whose outer peripheral surface is formed in a bellows shape (uneven shape) and can be bent. Since the bent portion 195 can bend the cover member 19 following the direction in which the cable 21 is bent, the cable 21 inserted into the cover member 19 can be prevented from being damaged or disconnected.

  Further, the cover main body 192 has a diameter larger than that of the cable protector 191, and the flange portion of the shell 13 (for example, between the coupling locking portion 132 and the nut coupling portion 133 in FIG. 2). Locking claws 196 are formed to prevent the sleeve 16 and the nut 15 from coming off the cover member 19 (see FIG. 2).

  As described above, the caulking ring 17 has the protruding portion 172 with the sleeve 16 being caulked (see FIGS. 4A and 4B). 19 is positioned and held. Furthermore, since the cover member 19 is formed integrally with the protruding portion 172, the sleeve 16, and the nut 15, the positional deviation of the cover member 19 toward the fitting side A or the cable connection side B can be suppressed.

[3. Third Embodiment]
Next, a schematic configuration of the cover member 219 according to the third embodiment will be described with reference to FIG. The cover member 19 of the second embodiment has been described with reference to the case where it is integrally formed with the electrical connector 1 including the protrusion 172 (172a, 172b), the sleeve 16 and the nut 15, but the third embodiment. The cover member 219 has a divided structure, and the configuration of other parts is the same as that of the second embodiment. Therefore, in the following, description of the same configuration as the cover member 19 according to the second embodiment will be omitted, and the same components as those of the cover member 19 according to the second embodiment will be denoted by the same reference numerals. I will explain. FIG. 6 is a perspective view showing a cover member 219 according to the third embodiment.

  The cover member 219 has a two-part structure of one cover member (one divided body) 219a and the other cover member (the other divided body) 219b, and this one cover member 219a and the other cover member 219b. Are formed with recesses 220 into which the above-described protrusions 172 can be inserted (in FIG. 6, the recess 220 on one cover member 219a side is omitted).

  As described above, the cover member 219 having the two-divided structure holds the sleeve 16 in contact with the braided folded portion 26 and the sleeve 16 on one cover member 219a or the other cover member 219b. The sleeve 16 and the nut 15 are placed by inserting the protrusion 172 of the caulking ring 17 of the connector, which is assembled like the electrical connector 1 shown in FIG. .

  Then, the sleeve 16, the nut 15, and the cable 21 are sandwiched between the one cover member 219a and the other cover member 219b, thereby covering the sleeve 16, the nut 15, the cable 21, and the like. Although not shown, one cover member 219a and the other cover member 219b are formed with an assembling portion for assembling each other, and this assembling portion causes one cover member 219a and the other cover member 219b to be assembled. As a result, the sleeve 16 and the nut 15 are clamped.

  In the third embodiment, the cover member 219 is divided into two parts. However, the cover member 219 may be divided into two or more parts, for example, three parts or four parts.

[5. Effect]
The electrical connectors 1 and 2 as described above are connected to the cable 21 having the inner conductor 22 and the insulating layer 23, the metal braided layer 24, and the sheath 25 disposed so as to cover the outer periphery of the inner conductor 22. Electrical connectors 1 and 2 to which mating connectors are detachably fitted, and a required number of contacts 11 to which an inner conductor 22 exposing a cable 21 is connected, and an insulating block in which the contacts 11 are held in an arrayed state 12 and a shell 13 that holds the insulating block 12 so as to surround the outer periphery of the insulating block 12 on the fitting side A on which the mating connector is fitted, and the shell 13 on the fitting side A. A coupling 14 having a fitting means (fitting convex portion 143) to be held and a mating connector, and an engaging means (sheet) connected to a portion of the shell 13 opposite to the side where the coupling 14 is located. A nut 15 having a lug engaging portion 151), and an enlarged cylindrical portion 161 that is inserted into the nut 15 from the shell 13 side and abuts against the inner surface of the nut 15, and is inserted. And a caulking ring 17 for caulking the sleeve 16 in a state where the cable 21 is held from the outer periphery. The sleeve 16 includes a metal braided layer 24 exposing the cable 21. The braided folded portion 26 that is folded and covered on the outer surface of the sheath 25 is caulked by the caulking ring 17 with the braided folded portion 26 positioned inside, and is held in contact with the braided folded portion 26 to hold the sleeve 16. The nut 15 is connected to the shell 13, and the sleeve 16, which contacts and holds the braided folded portion 26 of the cable 21, the nut 15, the shell 13, and the coupling are integrated. Thereby forming a conductive.

  According to the electrical connectors 1 and 2 described above, the nut 15 is connected to the shell 13, and the sleeve 16 in contact with the braided folded portion 26 and the nut 15, shell 13, and coupling 14 are integrally formed. Thus, the transmission path of the cable 21 can be shielded. That is, when the metal braid layer 24 and the sheath 25 are peeled to connect the inner conductor 22 to the contact 11, and the peeled portion is cut and held by the sleeve 16, the portion not connected to the sleeve 16 is not connected to the metal braid layer 24. Therefore, when noise occurs, the noise may propagate in the electrical connectors 1 and 2 and the conductive performance may be deteriorated. However, according to the electrical connectors 1 and 2 described above, since the sleeve 16 is in contact with the braided folded portion 26, it is possible to take countermeasures against static electricity and noise.

  Further, the sleeve 16 is caulked from the outer periphery by the caulking ring 17, and the sleeve 16 is held in contact with the braided folded portion 26 in which the metal braided layer 24 is folded, so that the cable 21 is pulled by the external force pulled to the cable connection side B. In addition, problems such as the cable 21 being disconnected from the electrical connectors 1 and 2 can be prevented. Therefore, it is possible to provide the electrical connectors 1 and 2 that can improve the shielding performance while increasing the tensile strength.

  The caulking ring 17 preferably has at least one projecting portion 172 (172a, 172) projecting to the outer peripheral side in a state where the sleeve 16 is caulked. In this manner, the sleeve 16 is caulked with the caulking ring 17 so as to have the projecting portion 172, so that the holding force for the sleeve 16 to hold the cable 21 is improved, so that the cable 21 is further pulled to the cable connection side B. It is possible to prevent problems caused by the above.

  Furthermore, it is preferable to have cover members 19 and 219 that are positioned and held by the protrusions 172 (172a and 172b) and cover the sleeve 16 and the nut 15. As described above, since the cover members 19 and 219 are positioned and held by the protrusions 172, the displacement of the cover members 19 and 219 to the fitting side A or the cable connection side B with respect to the sleeve 16 and the nut 15 is suppressed. be able to. Moreover, since the cable 21 is covered by the cable protection part 191 of the cover members 19 and 219, the cable 21 can be protected from breakage or disconnection.

  The cover member 19 is preferably formed integrally with the protrusion 172 (172a, 172b), the sleeve 16, and the nut 15. For this reason, the protrusion 172 is locked inside the cover member 19 to further suppress the displacement of the cover member 19 toward the fitting side A or the cable connection side B with respect to the sleeve 16 and the nut 15. it can.

  Further, the cover member 219 has a divided structure of one cover member (one divided body) 219a and the other cover member (the other divided body) 219b, and one cover member 219a and the other cover member 219a. Of these, at least one cover member 219 is preferably formed with a recess 220 into which the protrusion 172 (172a, 172b) is inserted. Since the recess 220 is formed in this manner, the displacement of the cover member 19 from the fitting side A or the cable connection side B with respect to the sleeve 16 and the nut 15 is further suppressed by inserting the protrusion 172. can do.

[6. Modified example]
As described above, the electrical connectors 1 and 2 according to the present embodiment are illustrated and described based on the embodiment. However, the electrical connectors 1 and 2 are not limited to this, and the configuration of each part has the same function. It can be replaced with any configuration. Hereinafter, modified examples of the electrical connectors 1 and 2 will be described.

  In the embodiment described above, the case where the fitting means with the mating connector is the fitting convex portion 143 has been described. However, the fitting means is not limited to this, and a plurality of fitting means are provided. It may be provided. That is, the shape and number can be appropriately changed as long as they can be fitted to the mating connector.

  In the embodiment described above, the case where the engaging means of the nut 15 with the shell 13 is the shell engaging portion 151 has been described. However, the locking means is not limited to this, and a plurality of locking means are provided. It may be provided. In other words, the shape and number of the nut 15 can be appropriately changed as long as the nut 15 can be connected to the portion of the shell 13 opposite to the side where the coupling 14 is located.

  In the embodiment described above, the case where the caulking ring 17 has the two projecting portions 172a and 172b projecting to the outer peripheral side in the state where the caulking portion 167 of the sleeve 16 is caulked has been described. It can be changed. That is, the number of protrusions may be one or two or more.

  As mentioned above, even if it replaces with the thing of the arbitrary structures which have the same function, the effect similar to the electrical connector 1 and the electrical connector 2 which concerns on embodiment of this invention can be acquired.

DESCRIPTION OF SYMBOLS 1 Electrical connector 2 Electrical connector 11 Contact 12 Insulation block 13 Shell 14 Coupling 15 Nut 16 Sleeve 17 Ring 19 Cover member 21 Cable 22 Inner conductor 23 Insulating layer 24 Metal braiding layer 25 Sheath 26 Braid folding part 111 Contact part 112 Connection part 113 Lance 121 Insertion hole 131 Block holding portion 132 Coupling locking portion 133 Nut coupling portion 134 Sleeve coupling portion 142 Shell locking portion 143 Fitting convex portion 145 Fitting port 151 Shell engaging portion 152 Sleeve locking portion 161 Expanded cylindrical shape Part 162 cable holding part 165 locking projection part 166 end contact part 167 caulking part 172a projection part 172b projection part 219 cover member

Claims (5)

An electrical connector to which an internal conductor and a cable having an insulating layer, a metal braided layer, and a sheath arranged so as to cover the outer periphery of the internal conductor are connected and a mating connector is detachably fitted,
A required number of contacts to which the inner conductor is connected;
An insulating block in which the contacts are held in an array; and
On the fitting side where the mating connector is fitted, a shell that holds the insulating block by being arranged so as to surround the outer periphery of the insulating block;
On the fitting side, a coupling that is held by the shell and has a fitting means with the mating connector;
A nut having engagement means connected to a portion of the shell opposite to the side where the coupling is located;
A sleeve that has an enlarged cylindrical portion that is inserted from the shell side with respect to the nut and is abutted and locked to the inner surface of the nut, and holds a portion of the inserted cable inside,
A caulking ring that caulks the sleeve in a state of holding the cable portion from an outer periphery; and
The sleeve is caulked by the caulking ring while the braided folded portion that is folded over the metal braided layer and is placed on the outer surface of the sheath is located inside, so that the sleeve is in contact with the braided folded portion. Configured,
The nut that holds the sleeve is connected to the shell, and the sleeve that contacts and holds the braided folded portion of the cable is integrated with the nut, the shell, and the coupling to form conduction. And electrical connector.   2. The electrical connector according to claim 1, wherein the caulking ring has at least one projecting portion projecting toward an outer peripheral side in a state where the sleeve is caulked. 3.   The electrical connector according to claim 2, further comprising a cover member that is positioned and held by the protrusion and covers the sleeve and the nut.   The electrical connector according to claim 3, wherein the cover member is integrally formed as an electrical connector such as the protrusion, the sleeve, the nut, and the cable. The cover member has a divided structure of one divided body and the other divided body,
4. The electrical connector according to claim 3, wherein a recess into which the protrusion is inserted is formed in at least one of the one divided body and the other divided body.

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