JP6762784B2 - Electrical connector - Google Patents

Description

The present invention relates to an electric connector used in an electric device such as a robot or a communication device or an electronic device.

Conventionally, as an electric connector used for an electric device such as a robot or a communication device or an electronic device, an electric connector having a contact to which an inner conductor of a cable is connected has been used. These electric connectors come into contact with the contacts on the other side by fitting with the electric connectors on the other side to conduct the cables with each other (see, for example, Patent Document 1).

In the electric connector as described above, the tensile strength of the cable is increased by crimping or crushing the cable whose internal conductor is connected to the contact from the outer periphery, and the cable is prevented from coming off from the electric connector. There is.

Japanese Unexamined Patent Publication No. 2012-43763

However, in the conventional electric connector, since it is necessary to secure the electrical characteristics of the cable, there has been a demand for an electric connector structure in which the tensile strength of the cable is increased and the shielding performance is further improved.

Therefore, an object to be solved by the present invention is to provide an electric connector having improved shielding performance while increasing tensile strength.

In order to achieve the above object, in the electric connector of the present invention, a cable having an inner conductor and an insulating layer, a metal braided layer and a sheath arranged so as to cover the outer periphery of the inner conductor is connected, and the mating connector is connected. An electric connector that is detachably fitted, and a required number of contacts to which the inner conductor is connected, an insulating block in which the contacts are held in an arranged state, and a fitting side to which the mating connector is fitted. A shell that is arranged so as to surround the outer periphery of the insulating block and holds 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 an engaging means connected to a portion of the shell opposite to the side on which the coupling is located, and the nut inserted from the shell side into the nut and abutting against the inner surface of the nut. It is provided with a sleeve having an expanded tubular portion to be locked and holding the inserted cable portion inside, and a caulking ring for crimping the sleeve in a state of holding the cable portion from the outer periphery. The sleeve is configured so that the metal braided layer is folded back and the braided folded portion covered on the outer surface of the sheath is located inside and is crimped by the caulking ring so as to be in contact with the braided folded portion. Then, the nut that holds the sleeve is connected to the shell, and the sleeve that is contacted and held by the braided folding portion of the cable is integrated with the nut, the shell, and the coupling to form a conductor.

The above electrical connector shields the transmission path of the cable by connecting the nut to the shell and integrating the sleeve, nut, shell and coupling that are in contact with the braided folding part to form continuity. Can be done. In addition, since the sleeve is crimped from the outer circumference by the caulking ring and the sleeve is held in contact holding state with respect to the braided folded portion, it is possible to prevent problems such as the cable being pulled out from the electric connector due to an external force due to the cable being pulled. .. Therefore, it is possible to provide an electric connector capable of improving the shielding performance while increasing the tensile strength.

Further, it is preferable that the caulking ring has at least one protruding portion protruding toward the outer peripheral side in a crimped state of the sleeve. As a result, the holding force of the sleeve for holding the cable is improved, so that it is possible to prevent a problem due to the cable being pulled more.

Further, 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 protrusion, the displacement of the cover member with respect to the sleeve and the nut can be suppressed.

Further, it is preferable that the cover member is integrally formed as an electric connector such as the protrusion, the sleeve, the nut, and the cable. Since the cover member is integrally formed (integrally molded) in this way, the 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 divided body of the one divided body and the other divided body. It is preferable that a recess to be formed is formed. Since the recess is formed in this way, the displacement of the cover member with respect to the sleeve and nut can be further suppressed by inserting the protrusion.

As described above, according to the present invention, it is possible to provide an electric connector having improved shielding performance while increasing tensile strength.

It is a figure for showing the structure of the electric connector which concerns on 1st Embodiment, FIG. 1A is a perspective view which looked at the electric connector which concerns on 1st Embodiment from one side, and FIG. 1B is , Is a perspective view of the electric connector according to the first embodiment as viewed from the other side. It is an exploded perspective view of the electric connector which concerns on 1st Embodiment. It is a figure for showing the structure of the cable connected to the electric connector which concerns on 1st Embodiment, and FIG. 3A is a perspective view which shows the cable connected to the electric connector which concerns on 1st Embodiment. FIG. 3B is a perspective view showing a state in which the metal braided layer of the cable connected to the electric connector according to the first embodiment is folded back. It is a figure for showing the caulking ring of the electric connector which concerns on 1st Embodiment, and FIG. 4A is a perspective view which shows the state which the sleeve was crimped by the caulking ring which concerns on 1st Embodiment, and is FIG. 4 (b). ) Is a plan view showing a state in which the sleeve is crimped by the crimping ring according to the first embodiment. It is a perspective view which shows the cover member of the electric connector which concerns on 2nd Embodiment. It is a perspective view which shows the cover member of the electric connector which concerns on 3rd Embodiment.

Hereinafter, the electric connector according to the embodiment of the present invention will be described with reference to the drawings. The electric connector according to the present embodiment is an electric connector that conducts between devices and devices via a cable by fitting the electric connector on the other side.

[1. First Embodiment]
First, a schematic configuration of the electric connector 1 according to the first embodiment will be described with reference to FIGS. 1 and 2. FIG. 1 is a diagram for showing a schematic configuration of the electric connector 1 according to the first embodiment, and FIG. 1A is a perspective view of the electric connector 1 as viewed from one side (arrow A side in FIG. 1). 1 (b) is a perspective view of the electric connector 1 as viewed from the other side (arrow B side in FIG. 1). FIG. 2 is an exploded perspective view of the electric connector 1 according to the present embodiment.

[1-1. Outline configuration of electrical connector]

As shown in FIGS. 1 and 2, the electric connector 1 internally holds a required number of contacts 11 to which the cable 21 is connected, an insulating block 12 in which the contacts 11 are held in an arranged state, and an insulating block 12. A coupling 14 having a fitting means (fitting convex portion 143 described later) for fitting the shell 13 and a connector (not shown) on the other side, and an engaging means connected to the shell 13 (shell engaging portion 151 described later). ), A sleeve 16 that holds a portion of the inserted cable 21 inside, and a caulking ring 17 that crimps the sleeve 16 from the outer periphery.

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

When the lance 113 is inserted into the insertion hole 121 of the insulating block 12 described later, it bends and deforms downward, and when the insertion of the contact 11 is completed, the bending deformation is eliminated, and the lance 113 becomes a locking portion (not shown) in the insertion hole 121. By locking, the contact 11 is locked with respect to the insulating block 12.

The connection between the connection portion 112 and the cable 21 may be any structure (method) as long as the cable 21 and the connection portion 112 can be connected. For example, even if the connection is by crimping, soldering may be used. It may be a connection by soldering.

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 in a shape.

The insulating block 12 has an insertion hole 121 into which a contact 11 can be inserted by penetrating from one side to the other side, and a fitting side A (where a connector on the other side is fitted from one end of the insulating block 12). A groove portion 122 extending to the arrow A side in FIG. 1 is formed. The groove portion 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 inserted into the shell 13. Is held in.

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. And the nut coupling portion 133 to which the nut 15 is screw-coupled, and the sleeve coupling portion 134 to which the end contact portion 166 of the sleeve 16 contacts when the nut 15 in which the sleeve 16 is locked to the nut coupling portion 133 is connected. have.

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

The coupling 14 has a shell locking portion 142 that locks to the coupling locking portion 132 of the shell 13 on the cable connecting side B (arrow B side in FIG. 1) to which the cable 21 is connected. By locking the shell locking portion 142 to the coupling locking portion 132, the coupling 14 is held by the shell 13.

Further, the coupling 14 has a fitting convex portion 143 which is a fitting means for fitting with the connector on the mating side A 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 to hold 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), which is a gap, is formed between the coupling 14 and the shell 13. A coupling (not shown) of the connector on the other side is inserted into the fitting port 145 when the electric connector 1 is fitted with the connector on the other side.

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 connecting side B). The nut 15 is engaged with the shell 13 by screw-coupling the shell engaging portion 151 with the nut connecting portion 133. Further, at the inner end of the cable connection side B of the nut 15, a sleeve locking portion 152 is formed in which the locking protrusion 165 of the enlarged diameter tubular portion 161 described later abuts and the shell 13 is locked. ing.

The sleeve 16 has a substantially cylindrical shape, and has an enlarged diameter tubular portion 161 through which the cable 21 is inserted on the fitting side A and a cable holding portion 162 for holding the cable 21 inside on the cable connecting side B. Have. The diameter of the enlarged diameter tubular portion 161 is formed to be 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 braided layer 24 folded back and covered on the outer surface of the sheath 25, and the metal braided layer 24 is folded back inside the cable holding portion 162. The braided folding portion 26 is located (see FIG. 4 described later).

The enlarged diameter tubular portion 161 projects outward on the outer circumference of the end portion and abuts against the sleeve locking portion 152 which is the inner surface of the nut 15, and the shell 13 engages with the nut 15. It has a portion 165 and an end abutting portion 166 that abuts the sleeve coupling portion 134 when the nut 15 is coupled to the shell 13.

Further, the cable holding portion 162 has a caulking portion 167 that is crimped from the outer circumference by a caulking ring 17 while the 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 cut out from a part of the ring, and as will be described later, the braided folding portion 26 in which the sleeve 16 is crimped from the outer circumference and the metal braid layer 24 is folded back. The sleeve 16 is held in a contact holding state. That is, the caulking portion 167 is caulked by the caulking ring 17 so that the sleeve 16 and the braided folding portion 26 are brought 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 in a contact-holding state are integrated with the braided folded portion 26 to form continuity, thereby forming a transmission path of the cable 21. Can be shielded.

[1-2. Crimping the sleeve with a 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 diagram for showing a cable 21 connected to the electric connector 1 according to the first embodiment, FIG. 3 (a) is a perspective view showing the cable 21, and FIG. 3 (b) is a perspective view. It is a perspective view which shows the state which the metal braid layer 24 of a cable 21 is folded back. 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 crimped by the caulking ring 17 according to the first embodiment. 4 (b) is a plan view showing a state in which the sleeve 16 is crimped by the caulking ring according to the first embodiment.

As described above, the caulking ring 17 connects the cable 21 to the electric connector 1 by holding the sleeve 16 in a contact-holding state with respect to the braided folded-back portion 26 in which the sleeve 16 is crimped from the outer circumference and the metal braided layer 24 is folded back. To do.

Here, the configuration of the cable 21 connected to the electric connector 1 will be described with reference to FIGS. 3 (a) and 3 (b). As shown in FIGS. 3A and 3B, the cable 21 covers the inner conductor 22, the insulating layer 23 arranged so as to cover the outer periphery of the inner conductor 22, and the outer periphery of the insulating layer 23. It has a metal braided layer 24 arranged in such a manner and a sheath 25 arranged so as to cover the outer periphery of the metal braided layer 24.

Then, the metal braided layer 24 on one end side of the cable 21 is folded back and folded back onto the outer surface of the sheath 25. That is, the metal braided layer 24 and the sheath 25 are folded back from 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 put on the outer peripheral surface of the sheath 25 to cover the braided folded portion 26. Form.

An inner conductor 22 is exposed on one end side of the insulating layer 23 exposed by folding back the metal braided layer 24 and the sheath 25, and the inner conductor 22 is connected to the connecting portion 112 of the contact 11.

The braided folding portion 26 is held inside the cable holding portion 162 by inserting the cable 21 into the sleeve 16 and folding back the metal braided layer 24 and the sheath 25. Then, while the braided folding portion 26 is located inside the cable holding portion 162, the caulking ring 17 is pressed from the vertical direction X (X direction in FIG. 4A) with a tool or the like to press the caulking portion 167 of the sleeve 16. By caulking, protrusions 172a and 172b 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 crimped by the caulking ring 17, the caulking ring 17 has a protrusion protruding toward the outer peripheral side. 172a and 172b are formed. That is, the caulking ring 17 has protrusions 172a and 172b protruding in the left-right direction Y (Y direction in FIG. 4A) intersecting the vertical direction X with the sleeve 16 crimped.

In this way, when the crimping portion 167 is crimped by the crimping ring 17 by pressing with a tool or the like, the crimping ring 17 has the protrusions 172a and 172b in the crimped state of the sleeve 16.

[1-3. How to assemble an electrical connector]
Next, the method of assembling the above-mentioned electric connector 1 will be described with reference to FIGS. 1 to 4. First, the connection portion 112 of the contact 11 is connected to the inner conductor 22 with one end side of the insulating layer 23 of the cable 21 exposed.

Next, the contact 11 to which the inner 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 which the contact 11 is inserted and the inner conductor 22 is held is inserted into the shell 13 from the block holding portion 131 side to the cable connecting side B. Specifically, the cable 21 is inserted from one end side to the other end side of the shell 13, and the convex portion (not shown) formed inside the shell 13 is inserted into the groove portion 122 of the insulating block 12 to form an insulating block. The position where the 12 and the shell 13 are connected is determined. Then, 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 shell locking portion 142 of the coupling 14 is locked to the coupling locking portion 132 of the shell 13, so that the coupling 14 is arranged so as to surround the outer circumference of the fitting side A 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 connecting side B, and the locking protrusion 165 of the sleeve 16 is locked to the sleeve locking portion 152 of the nut 15. The sleeve 16 is held by the nut 15.

Then, the nut 15 is locked to the shell 13 by screw-coupling 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 comes into contact with the nut joint portion 133.

Further, the caulking ring 17 is positioned on the outer circumference of the caulking portion 167, and the caulking ring 17 is pressed from the vertical direction X with a tool or the like to crimp the caulking portion 167. When the caulking portion 167 is crimped by the caulking ring 17, protrusions 172a and 172b are formed on the caulking ring 17, and the sleeve 16 is kept in 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 folding portion 26 of the cable 21 is integrated with the nut 15, the shell 13, and the coupling 14 to conduct conduction. Form. As described above, since the sleeve 16 is in a contact-holding state with respect to the braided folded-back portion 26, the sleeve 16, the nut 15, the shell 13 and the coupling 14 are integrated to form continuity, thereby transmitting the cable 21. The route can be shielded. Further, by crimping the sleeve 16 so that the caulking ring 17 has protrusions 172a and 172b, the holding force of the sleeve 16 for holding the cable 21 is improved, and the cable 21 is pulled more toward the cable connection side B. It is possible to prevent problems caused by.

Then, the electric connector 1 assembled as described above is fitted with the connector on the other side to make the cable 21 and the cable connected to the connector on the other side (not shown) conductive. Specifically, when the mating connector is inserted into the mating port 145, the mating convex portion 143 is inserted into the locking hole (not shown) formed in the mating connector, and the electric connector 1 and the mating side are inserted. Maintains the mated state with the connector.

The contact 11 to which the inner conductor 22 of the cable 21 is connected may be inserted after connecting the insulating block 12 and the shell 13. That is, the order in which the electric connector 1 is assembled is not limited to the above-mentioned order, and can be changed as appropriate.

[2. Second Embodiment]
Next, a schematic configuration of the electric connector 2 according to the second embodiment will be described with reference to FIG. The electric connector 2 according to the second embodiment has a cover member 19, and the cover member 19 is integrally molded with a protrusion 172 (172a, 172b), a sleeve 16, a nut 15, a cable 21, and the like. Yes, the configuration of other parts is the same as in the first embodiment. Therefore, in the following, the description of the same configuration as that of the electric connector 1 according to the first embodiment will be omitted, and the same reference numerals will be given to the same components as the electric connector 1 according to the first embodiment. Will be explained. Note that FIG. 5 is a perspective view showing the cover member 19 according to the second embodiment.

The cover member 19 is formed by fastening one mold and the other mold, which are not shown, and filling the space in the mold where the cover member 19 is formed with resin. To form the cover member 19, first, the crimped portion 167 is crimped by the crimped ring 17, and the electric wire shown in FIG. 1 including a sleeve 16 in a contact holding state with respect to the braided folded portion 26 and a nut 15 holding the sleeve 16. The connector assembled like the connector 1 and to which the cable 21 is connected is placed on the mold.

Next, the cover member 19 is integrated with the electric 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 inside of the mold with resin. Form. Specifically, the space forming the shape of the cover member 19 in the mold in the molded state is filled with an electrically insulating plastic such as a liquid crystal polymer (LCP), polycarbonate (PC), or a synthetic material thereof. As a result, the cover member 19 is integrally molded as the electric connector 2 such as the protrusion 172, the sleeve 16, the nut 15, and the cable 21 described above.

As described above, the cover member 19 integrally molded by filling the inside of the mold with resin includes a cable protection portion 191 that covers the cable 21, and a cover that covers the sleeve 16 and the nut 15. A main body portion 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 (concave and convex shape) and can be bent. Since the cover member 19 can be bent in the direction in which the cable 21 is bent by the bent portion 195, it is possible to prevent the cable 21 inserted into the cover member 19 from being damaged or broken.

Further, the cover main body portion 192 is formed to have a larger diameter than the cable protection portion 191 and is formed to have a flange portion of the shell 13 (for example, between the coupling locking portion 132 of FIG. 2 and the nut coupling portion 133). A locking claw 196 is formed to prevent the sleeve 16 and the nut 15 from coming off the cover member 19 (see FIG. 2).

As described above, since the caulking ring 17 has the protrusion 172 in the crimped state of the sleeve 16 (see FIGS. 4 (a) and 4 (b)), the cover member is provided by the protrusion 172. 19 is positioned and held. Further, since the cover member 19 is integrally formed with the protrusion 172, the sleeve 16 and the nut 15, it is possible to suppress the displacement of the cover member 19 to the fitting side A or the cable connecting side B.

[3. Third Embodiment]
Next, with reference to FIG. 6, the schematic configuration of the cover member 219 according to the third embodiment will be described. Although the cover member 19 of the second embodiment is integrally molded with the electric connector 1 including the protrusions 172 (172a, 172b), the sleeve 16 and the nut 15, the third embodiment has been illustrated. The cover member 219 of the above has a divided structure, and the configuration of other parts is the same as that of the second embodiment. Therefore, in the following, the description of the same configuration as that of the cover member 19 according to the second embodiment will be omitted, and the same reference numerals will be given to the same components as the cover member 19 according to the second embodiment. I will explain. Note that FIG. 6 is a perspective view showing the cover member 219 according to the third embodiment.

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

As described above, the cover member 219 having the two-divided structure holds the sleeve 16 in a contact-holding state with respect to the braided folding portion 26 described above 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 assembled as shown in FIG. 1 including the nut 15 and to which the cable 21 is connected into the recess 220. ..

Then, the sleeve 16, the nut 15, and the cable 21 are sandwiched between one cover member 219a and the other cover member 219b to cover 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 assembly portion for assembling each other, and the assembly portion forms one cover member 219a and the other cover member 219b. Is assembled to sandwich the sleeve 16 and the nut 15.

Although the case where the cover member 219 is divided into two parts has been described in the third embodiment, the cover member 219 may be divided into two or more parts, for example, a divided structure such as three parts or four parts.

[5. Action effect]
The electrical connectors 1 and 2 as described above are connected to the inner conductor 22 and the cable 21 having the insulating layer 23, the metal braided layer 24, and the sheath 25 arranged so as to cover the outer periphery of the inner conductor 22. Electrical connectors 1 and 2 to which the mating connector is detachably fitted, and an insulating block in which the required number of contacts 11 to which the internal conductor 22 with the cable 21 exposed is connected and the contacts 11 are held in an arranged state. 12 and a shell 13 that is arranged so as to surround the outer periphery of the insulating block 12 and holds the insulating block 12 on the fitting side A to which the mating connector is fitted, and on the fitting side A, the shell 13 Engagement means (shell engagement) connected to a portion of the shell 13 opposite to the side where the coupling 14 is located, and a coupling 14 that is held and has a fitting means (fitting convex portion 143) with the mating connector. A portion of a cable 21 that has a nut 15 having a connector 151) and an enlarged tubular portion 161 that is inserted into the nut 15 from the shell 13 side and abutted against the inner surface of the nut 15 to be locked. The sleeve 16 includes a sleeve 16 that holds the cable 21 inside, and a caulking ring 17 that crimps the sleeve 16 holding the portion of the cable 21 from the outer periphery. A nut 15 that is configured to be in contact with the braided folding portion 26 by being crimped by a caulking ring 17 while the braided folding portion 26 covered on the outer surface of the sheath 25 is positioned inside, and holds the sleeve 16. Is connected to the shell 13, and the sleeve 16 that contacts and holds the braided folding portion 26 of the cable 21 and the nut 15, the shell 13, and the coupling are integrated to form continuity.

According to the electric connectors 1 and 2 described above, the nut 15 is connected to the shell 13, and the sleeve 16 in a contact-holding state with respect to the braided folded portion 26, and the nut 15, the shell 13, and the coupling 14 are integrally formed. Therefore, the transmission path of the cable 21 can be shielded. That is, when the metal braided layer 24 and the sheath 25 are peeled off to connect the inner conductor 22 to the contact 11, and the peeled portion is cut off and held by the sleeve 16, the portion not connected to the sleeve 16 is formed on the metal braided layer 24. Therefore, when noise is generated, the noise may propagate in the electric connectors 1 and 2 to deteriorate the conductive performance. However, according to the electric connectors 1 and 2 described above, since the sleeve 16 is in contact with the braided folded-back portion 26, it is possible to take measures against static electricity and noise.

Further, since the sleeve 16 is crimped from the outer circumference by the caulking ring 17 and the sleeve 16 is held in contact holding state with respect to the braided folded portion 26 in which the metal braid layer 24 is folded back, the cable 21 is pulled to the cable connection side B by an external force. , It is possible to prevent problems such as the cable 21 being disconnected from the electric connectors 1 and 2. Therefore, it is possible to provide the electric connectors 1 and 2 that can improve the shielding performance while increasing the tensile strength.

Further, the caulking ring 17 preferably has at least one protruding portion 172 (172a, 172) protruding toward the outer peripheral side in a crimped state of the sleeve 16. By crimping the sleeve 16 with the caulking ring 17 so as to have the protrusion 172 in this way, the holding force of the sleeve 16 holding the cable 21 is improved, so that the cable 21 is pulled more toward the cable connection side B. It is possible to prevent problems caused by this.

Further, it is preferable to have cover members 19, 219 that are positioned and held by the protrusions 172 (172a, 172b) and cover the sleeve 16 and the nut 15. In this way, since the cover members 19 and 219 are positioned and held by the protrusions 172, the sleeve 16 and the nut 15 are prevented from being displaced from the cover members 19 and 219 to the fitting side A or the cable connecting side B. be able to. Further, since the cable 21 is covered by the cable protection portion 191 of the cover members 19 and 219, the cable 21 can be protected from damage or disconnection.

Further, the cover member 19 is preferably formed integrally with the protrusions 172 (172a, 172b), the sleeve 16 and the nut 15. Therefore, by locking the protrusion 172 inside the cover member 19, it is possible to further suppress the displacement of the cover member 19 to 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 the cover member 219a of one and the cover member 219a of the other. It is preferable that at least one of the cover members 219 is formed with a recess 220 into which the protrusion 172 (172a, 172b) is inserted. Since the recess 220 is formed in this way, by inserting the protrusion 172, the position shift of the cover member 19 to the fitting side A or the cable connecting side B with respect to the sleeve 16 and the nut 15 is further suppressed. can do.

[6. Modification example]
Although the electric connectors 1 and 2 according to the present embodiment have been illustrated and described based on the embodiment, the electric connectors 1 and 2 are not limited thereto, and the configurations of the respective parts have the same functions. It can be replaced with any configuration. Hereinafter, modifications of the electric connectors 1 and 2 will be described.

In the above-described embodiment, the case where the fitting means with the connector on the mating side is the fitting convex portion 143 has been described, but the fitting means is not limited to this, and a plurality of fitting means may be used. It may be provided. That is, any shape and number that can be fitted to the connector on the other side can be changed as appropriate.

In the above-described embodiment, the case where the engaging means of the nut 15 with the shell 13 is the shell engaging portion 151 has been described, but the locking means is not limited to this, and a plurality of locking means may be used. It may be provided. That is, any shape and number of nuts 15 that can be connected to the portion of the shell 13 opposite to the side where the coupling 14 is located can be appropriately changed.

In the above-described embodiment, the case where the crimping ring 17 has two protrusions 172a and 172b protruding toward the outer peripheral side in a state where the crimped portion 167 of the sleeve 16 is crimped has been described, but the number of protrusions is appropriate. It can be changed. That is, the number of protrusions may be one or two or more.

As described above, even if it is replaced with an arbitrary configuration having the same function, the same action and effect as those of the electric connector 1 and the electric connector 2 according to the embodiment of the present invention can be obtained.

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 Internal conductor 23 Insulation layer 24 Metal braid layer 25 Sheath 26 Braided folding part 111 Contact part 112 Connection part 113 Lance 121 Insertion hole 131 Block holding part 132 Coupling locking part 133 Nut connecting part 134 Sleeve connecting part 142 Shell locking part 143 Fitting convex part 145 Fitting port 151 Shell engaging part 152 Sleeve locking part 161 Expanded tubular shape Part 162 Cable holding part 165 Locking protrusion 166 End contact part 167 Caulking part 172a Protrusion part 172b Protrusion part 219 Cover member

Claims (3)

An electrical connector in which a cable having an insulating layer, a metal braided layer, and a sheath arranged so as to cover the outer periphery of the inner conductor is connected, and a mating connector is detachably fitted.
With the required number of contacts to which the inner conductor is connected,
An insulating block in which the contacts are held in an array state,
On the fitting side where the mating connector is fitted, a shell that is arranged so as to surround the outer circumference of the insulating block and holds the insulating block.
On the fitting side, a coupling held by the shell and having a fitting means with the mating connector,
A nut having an engaging means connected to a portion of the shell opposite to the side on which the coupling is located.
A sleeve that has a diameter-expanded tubular portion that is inserted into the nut from the shell side and is locked against the inner surface of the nut, and holds the inserted cable portion inside.
A caulking ring having at least one protrusion protruding toward the outer circumference while the sleeve holding the cable portion is crimped from the outer circumference and the sleeve being crimped .
A cover member that is positioned and held by the protrusion and covers the sleeve and the nut is provided.
The sleeve is crimped by the caulking ring while the braided folded portion covered on the outer surface of the sheath by folding the metal braided layer is positioned inside, so that the sleeve is in a contact holding state with respect to the braided folded portion. Configured
The nut for holding the sleeve is connected to the shell, and the sleeve for contacting and holding the braided folded portion of the cable is integrated with the nut, the shell and the coupling to form conductivity. Electrical connector. Said cover member, said protrusion, said sleeve, said nut, electrical connector according to claim 1, characterized by being integrally formed as an electrical connector, such as the cable. The cover member has a divided structure of one divided body and the other divided body.
At least the one of the divided body, the electrical connector according to claim 1, wherein the recess in which the protrusion is inserted is formed of the other division member and the one of the divided body.

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