JP2005038703A - Connector for electric wire - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a connector for an electric wire with a structure capable of easily and stably connecting and holding signal wires irrespective of the kinds of shielded cables and with improved mechanical strength and shielding effect with large retention against the shielded cable as a whole. <P>SOLUTION: In the case of the connector for electric wires, when connecting a signal wires and shielded wires of the shielded cable 10 processed for connection and mounting to a contact for signal 42 and a contact 43 for shielding mounted on an inner housing 41, respectively, the connection is performed after stabilizing the retention of the signal wires by using a holder 3, and holding and fixing the holder 3 itself to and on a local part of the contact 43 for shielding. An inner shield coating part of the shielded cable is fixed to and held by a wire-holding barrel of the contact 43 for shielding, and then, built into a pair of shells 2, 5. The shell 2 is provided with a caulking part and has a structure of crimping by caulking a braided part by grounding wires of the shielded cable 10. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a wire connector suitable for high-frequency transmission, which is mainly composed of a shielded wire having a signal line and a shield wire (drain wire).

  Conventionally, several types of electric wire connectors of this type are known. In the receptacle type relay connector according to the example, the insertion port of the mating connector is provided at the tip so that the shield function at the tip insertion port into which the mating connector is inserted is enhanced and conforms to the IEEE standard for high frequency transmission. For a plurality of shields having an insulating body, a plurality of contacts, and a ring portion that covers the outside of the insulator body, the contact legs of the contacts, and the entire exposed portions of the wires, and sandwiches the shield layer of the cable The metal cover and a pair of insulating cover housings mounted on the outside of the shield metal cover, and the first metal cover covering the outside of the insulator body of the shield metal cover has a tip portion. It is formed as a cylindrical body with an integral structure, and the cylindrical body protrudes from the insertion port of the insulator body (Patent Document 1). It has become a irradiation).

In addition, in the shield connector according to another example of the conventional wire connector, the shield wire signal line is held by the holding member attached to the outer conductor terminal, and the shield conductor and the outer conductor terminal are connected to connect the shield wire. A dielectric housing that houses and holds the inner conductor terminal is attached to the outer conductor shell, and the signal line pressure contact portion of the inner conductor terminal is exposed to the opening of the outer conductor terminal. By inserting the connection terminal portion from above the opening of the wire, the signal line is pressed and connected by the signal line pressure contact portion, and the opening of the outer conductor shell is blocked by the outer conductor terminal, and at the same time, the outer conductor terminal It has a structure (refer to Patent Document 2) that is held in contact and in a conductive state.
JP 2001-332356 A (summary, FIG. 1) JP 2003-77595 A (summary, FIG. 4)

  In the case of the electric wire connector (relay connector) according to Patent Document 1 described above, the wire connecting work (connecting work) is performed because there is no part for holding the signal line of the shielded electric wire aligned at the contact connecting portion. In addition, the signal line is suspended between the braided caulking part and the signal line connection part (connection part) in the connected state, so that when the load such as vibration is applied from the outside, the connection part In addition to the risk of breakage of the wire, the shield wire is held only by the braided caulking part, so that if a force exceeding the holding force of the braided caulking part is applied, the signal wire connection part is directly applied. Since a load is applied, it is assumed that the connection part may be destroyed or the contact with the connection part may come out of the housing. Connection holding to the internal signal lines shield cable is not too stable, by the mechanical strength is not good, there is a disadvantage that has become electrically and mechanically stable connection to not perform structure.

  In addition, in the case of the electric wire connector (shield connector) according to Patent Document 2, since the signal wire of the shielded electric wire is held by the holding member and the signal wire is press-contacted by the signal line press-contact portion, the patent Unlike the case of Document 1, there is an advantage that the signal lines can be stably held after being aligned. However, in the case of the structure here, the outer conductor terminal is incorporated into the outer conductor shell when assembled to the outer conductor shell. In addition to the risk of damage to the signal wire with a small coating thickness that is pressed against the signal wire pressure contact portion of the inner conductor terminal, the cable may be damaged and may be clamped to the crimp portion of the outer conductor terminal. Because of the structure that uses only the crimping force, if a force greater than the holding force of the crimping part is applied, it will directly apply force to the local part of the signal line (indicating the crimping part by the holding member and the signal line crimping part of the internal conductor terminal) Added In addition, there is a problem in mechanical strength that the risk of signal line damage or breakage is increased, and the shield wire (drain wire) of the shielded wire is not a structure that is used for connection with the contact of the mating connector. There is a drawback that the shielding function is not fully exhibited.

  The present invention has been made to solve such problems, and the technical problem thereof is that the connection to the signal line can be easily and stably maintained regardless of the type of the shielded electric wire, and the shielded electric wire is provided. It is an object of the present invention to provide an electric wire connector having a structure having a large holding force with respect to the whole and improved mechanical strength and shielding effect.

  According to the present invention, a contact having a contact portion to be brought into contact with a contact of a mating connector, a housing for holding and fixing the contact, and a shell for covering the housing are provided, and further, a conductor exposed portion of the shielded electric wire In the electric wire connector that can be assembled to the housing after connecting the contact to the contact, the contact is used for connecting the signal contact of the shielded wire to the exposed conductor of the signal wire and the shielded wire of the shielded wire. A shielding contact provided, and the housing is capable of holding and fixing the signal contact and the shielding contact facing each other, and the shell holds the housing in such a manner as to sandwich the housing from opposite directions. A shield that covers and is engaged and held together The predetermined portion of the contact, the wire connector for the holder for holding in alignment of at least signal lines is fixed and held to obtain.

  Further, according to the present invention, in the above wire connector, the signal contact is formed of a conductor piece having one end side as a connection portion to the signal line and the other end side as a contact portion, and the shield contact is provided at one end side. An electric wire connector having a wire holding barrel for holding a shielded electric wire by caulking, having a connection portion for the shield wire in the middle portion, and having a contact portion on the other end side is obtained.

  Furthermore, according to the present invention, in the wire connector, the connection portion in the signal contact and the connection portion in the shield contact are arranged on the same plane. Is obtained.

  In addition, according to the present invention, in any one of the above-described electric wire connectors, an external housing is provided for storing and holding an assembly formed by sandwiching and holding the housing between a pair of shells. An electric wire connector is obtained.

  According to the electric wire connector of the present invention, it is possible to incorporate a multi-core shielded electric wire having a signal wire and a shield wire, and connect and attach to the signal contact and the shield contact assembled to the internal housing. When connecting the signal wire and shield wire of the shielded wire machined for the purpose, the holding of the signal wire is stabilized using the holder, and the holder itself is held and fixed to the local part of the shield contact. In addition, the inner shield sheath of the shielded electric wire is fixed and held by the electric wire holding barrel of the shield contact, and then incorporated into a pair of shells, and the braided portion of the shielded electric wire is provided by grounding the shielded electric wire. Since the part is crimped by caulking, the signal line is suspended even when vibration is applied from the outside. It is difficult to apply a load to the connection part of the signal line without being in a state, and even if a force exceeding the holding force of the caulking part of the shell is applied, the load is not directly applied to the connection part of the signal line and it is stably held The force is maintained, and as a result, the connection holding with respect to the signal line inside the shielded electric wire is extremely stable, and the mechanical strength and the shielding effect are remarkably improved. As a result, an unprecedented electrically and mechanically stable connection can be obtained, which is suitable for applications in which electrical connection is made in various fields, and has excellent durability and high reliability. In addition, since the connection portion for the signal line of the shielded wire in the signal contact and the connection portion for the shield wire in the shield contact are arranged on the same plane, these connection portions in the shielded wire are The soldering connection and the subsequent assembling work can be performed easily and accurately, and the assembly of the entire wire connector requiring the installation of the shielded wire can be easily performed with high precision. become. Further, since the assembled body formed by sandwiching and holding the housing between the pair of shells is stored and held in the external housing, it is strong against a load applied from the outside and has a strong durability. .

  A structure in which a contact having a contact portion to be brought into contact with the contact of the mating connector is held and fixed by a housing, the housing is covered with a shell, and the contact can be assembled to the conductor exposed portion of the shielded wire and assembled to the housing In the electric wire connector, the signal contact provided for connection to the conductor exposed portion of the signal wire of the shielded electric wire and the shield contact provided for connection to the shielded electric wire of the shielded electric wire are provided as contacts, As the shell, the housing is covered so as to sandwich the housing from opposite directions, and a pair of shells that are engaged with each other and fitted and held are provided, and the signal contact and the shield contact are opposed to each other by the housing. Place, hold, and fix at a predetermined location on the shield contact Also it is obtained by fixing and holding the holder for holding and aligning the signal line. Further, the assembled body in which the housing is sandwiched and held by a pair of shells is stored and held by the external housing.

  FIG. 1 is an exploded perspective view showing the basic configuration of the wire connector according to the first embodiment of the present invention in a state before the shielded wire is assembled. FIG. 2 is an exploded perspective view showing a detailed configuration of the inner housing assembly 4 provided in the electric wire connector.

  Referring to FIG. 1, the electric wire connector includes an inner housing assembly 4 to which a holder 3 in a state where a shield electric wire (not shown) is connected is attached, and an inner wall portion for attaching the inner housing assembly 4 so that the inner housing assembly 4 can be stored. A front shell 5, a back shell 2 for mounting in the vicinity of a position corresponding to the mounting portion of the holder 3 in the front shell 5 in a state in which the internal housing assembly 4 is incorporated, and a front shell In the state where the back shell 2 is incorporated in the local portion 5, the entire structure of both of these members is combined with the external housing 1 for mounting so as to be housed in the inner wall portion.

  Among these, locking portions 5 a are formed by notches at predetermined locations on both side surfaces in the longitudinal direction of the front shell 5. As for the back shell 2, a predetermined portion of the inner wall portion of the substantially box-shaped main body portion in which the end surface on one end side is provided with a caulking portion 2 a that is in close contact with the surface of the shielded electric wire by caulking and the end surface on the other end side is opened. 4 includes a total of four crimping locking portions 2d for the local portion of the front shell 5 in a pair of upper and lower portions, and a predetermined portion on both side surfaces of the main body portion is partially cut away by cutting to form the outer housing 1. The locking portion 2c that is locked with the convex portion at a predetermined portion of the locking portion 2c, and the locking lance 2b that is bent from the other end side in the locking portion 2c and locked to the locking portion 5a of the front shell 5. Is formed.

  Referring to FIG. 2, the inner housing assembly 4 includes a pair of conductor pieces having one end side as a connection portion to the signal line of the shielded electric wire and the other end side as a contact portion in contact with the contact of the mating connector. A signal contact 42 and a wire holding barrel 43b for holding the shielded wire by caulking at one end side, a connecting portion for the shielded wire of the shielded wire at the middle portion, and the other end side at the other end connector A shield contact 43 made of a conductor piece serving as a contact portion to be in contact with the contact is press-fitted into the inner housing 41 and assembled. That is, in this internal housing assembly 4, one end side portion of the signal contact 42 is a soldered portion 42a, and the shield contact 43 is flat in the vicinity of the contact portion with respect to the contact of the mating connector on the other end side. A flat outer top bent from the bottom surface to have a substantially U-shaped cross section serves as a soldering portion 43a for the shield wire of the shielded electric wire, and a corner for mounting the boss of the holder 3 on the substantially central portion of the flat bottom surface. A hole 43c is provided.

  FIG. 3 is a perspective view showing an external configuration of the shielded electric wire 10 incorporated in the electric wire connector.

  This shielded electric wire 10 basically covers two covered signal wires and one uncoated shield wire (drain wire) together with an inner shield covering portion 10a, and the outer peripheral surface thereof is grounded. The shielded twisted pair type structure is formed by arranging the wire and then surrounding the outer shield covering portion 10c. Here, the portion that enables connection and assembly to the above-described wire connector In order to ensure a certain level, the pair of signal lines and the shield line are exposed so that the conductor portion is partially exposed without being covered with the inner shield covering portion 10a in the entire one end side local portion, and the outer shield is provided in the vicinity thereof. The inner shield cover portion 10a is exposed without being covered with the cover portion 10c, and the outer shield cover portion 10 is exposed in the vicinity of the exposed end of the inner shield cover portion 10a. It is provided with a (portion serving to be crimped connection by caulking portion 2a of the back shell 2) braided portion 10b by the ground line to be brought into close contact with, and the state subjected to machining.

  Therefore, the connection and assembly work of the shielded electric wire 10 to the electric wire connector described above will be specifically described below.

  4A and 4B show a state in which the shielded electric wire 10 described above is attached to the holder 3 provided in the electric wire connector. FIG. 4A is a perspective view of the external configuration, and FIG. It is related with the side view which made the holder 3 the cross section.

  First, referring to FIGS. 4A and 4B, the attachment of the shielded electric wire 10 to the holder 3 will be described. When the shielded electric wire 10 processed for connection and assembly is attached to the holder 3, one end of the holder 3 is attached. An insertion hole for the whole electric wire for inserting the entire shielded electric wire 10 is provided on the near side at a predetermined position on the side, and two signal lines and one are connected to the insertion hole for the whole electric wire on the back side. Since the insertion holes for the internal wires for inserting the shield wires separately from each other are provided, by inserting the shield wire 10 from the insertion holes for the entire wire on the near side, The signal line and one shield line are respectively inserted into the inner wire insertion holes on the back side and attached in an aligned state.

  By the way, when attaching the shielded electric wire 10 to the holder 3 here, it is effective to devise the shape of the insertion hole for the shielded electric wire 10 so as to maintain a stable holding state.

  FIG. 5 shows the shape of the internal wire insertion hole 3a provided in the holder 3 required for attaching the shielded wire 10 to the holder 3 described in FIGS. 4 (a) and 4 (b). The figure (a) relates to the shape on the near side in the insertion direction, and the figure (b) relates to the shape on the back side in the insertion direction.

  Here, regarding the internal wire insertion hole 3a for a pair of signal lines, when the diameter of the signal line is φ, the shape on the near side is larger than the diameter φ of the signal line as shown in FIG. The cross-sectional circular shape of the diameter φ1 (φ1> φ) and the diameter φ2 (diameter φ1) smaller than the diameter φ of the signal line deformed into a tapered shape as shown in FIG. , The relationship of φ1> φ> φ2 is established), and a pair of signal lines can be easily inserted and held by press fitting. It is shown that the retention of can be maintained stably. In addition, the shape of the insertion hole 3a for such an internal electric wire can be applied also to the insertion hole for inserting the entire shielded electric wire 10.

  Next, assembly to the inner housing assembly 4 is performed in a state where the shielded electric wire 10 is attached and held on the holder 3. That is, the holder 3 with the shielded electric wire 10 is assembled vertically from above to the shield contact 43 exposed at one end of the inner housing assembly 4 in a state where the respective parts shown in FIG. 2 are assembled. 3 is completed by engaging and holding the boss provided on the lower surface of 3 in the square hole 43c provided in the shield contact 43. In this state, the conductor portions of the two signal lines and the one shield line are relatively positioned on the soldered portion 42a of the pair of signal contacts 42 and the soldered portion 43a of the shield contact 43. Therefore, it becomes easy to perform soldering between each part.

  Incidentally, although the assembly position of the pair of signal contacts 42 and the shield contact 43 is displaced in the vertical direction by press-fitting into the inner housing 41, the soldering portion 43a of the shield contact 43 located on the lower side is When formed by being bent into a substantially U-shaped cross section, the soldering portions 42a and 43a are placed on the same plane by being positioned at the same height as the soldering portion 42a of the signal contact 42. Can be soldered.

  Therefore, two signal lines and one for each of the soldered portion 42a of the pair of signal contacts 42 and the soldered portion 43a (one of the two locations) of the shield contact 43 on the same surface. Solder the conductor part with the shield wire. Before soldering, the wire holding barrel 43b of the shield contact 43 is crimped in advance so that the inner shield covering portion 10a of the shielded wire 10 is fixed and held.

  Further, the inner housing assembly 4 to which the holder 3 holding the shielded electric wire 10 is assembled is assembled into the front shell 5 and the back shell 2. As a procedure at this time, since the inner wall of the front shell 5 can accommodate the entire inner housing assembly 4, the local portion on one end side of the outer wall of the front shell 5 can be accommodated by the inner wall of the back shell 2 after the incorporation. By performing this incorporation, the inner housing assembly 4 is held in a form sandwiched between the front shell 5 and the back shell 2. When the back shell 2 is attached to the front shell 5 incorporating the internal housing assembly 4, the locking lance 2 b provided on the back shell 2 is locked to the locking portion 5 a of the front shell 5 and is fitted and held. .

  Thereafter, the entire shielded electric wire 10 is held by the front shell 5 and the backshell 2 so that the caulked portion 2 a of the back shell 2 is crimped and crimped to the braided portion 10 b of the shielded electric wire 10.

  Finally, the shielded wire 10 is connected by assembling the assembly (made by sandwiching the inner housing assembly 4 between the front shell 5 and the back shell 2 and holding it) to the outer housing 1. And the connector for electric wires which passed the assembly work is completed. When the outer housing 1 is assembled to the assembly, the engaging portion 2c of the back shell 2 in the assembly is engaged and held by a housing lance (not shown) provided on the inner wall of the outer housing 1.

  FIG. 6 is a perspective view showing the external configuration of the electric wire connector after the shielded electric wire 10 is incorporated in this way. FIG. 7 is a cross-sectional view of the electric wire connector of FIG. 6 in the side surface direction.

  Here, in the state after the shielded electric wire 10 is assembled to the electric wire connector, as shown in FIG. 6, the shielded electric wire 10 (only the outer shield covering portion 10c is exposed on the surface from one end side of the outer housing 1 in appearance. In addition, the opening of the front shell 5 is exposed at a position slightly retracted from the opening on the other end side. Further, as shown in FIG. 7, the boss 31 of the holder 3 is held in the square hole 43 c of the shield contact 43 and stored in the opening of the front shell 5 in the internal structure. A pair of signal contacts 42 and a shield contact 43 are inserted and contacted with the male contact of the mating connector as a female contact by mating connection with the mating connector.

  In the above-described first embodiment, the shielded wire 10 has a shielded twisted pair structure, but the number of cores may be different, and other types may be applied. Thus, the wire connector of the present invention is not limited to the disclosed one.

  The connector for electric wires of the present invention can incorporate a multi-core shielded wire regardless of the type of shielded wire, has extremely stable connection holding with respect to the signal wire inside the shielded wire, and has mechanical strength and shielding effect. Therefore, it is possible to obtain an electrically and mechanically stable connection, which is unprecedented, so that it is suitable for use in electrical connection in various fields and has excellent durability and high reliability.

It is the disassembled perspective view which showed the basic composition of the connector for electric wires which concerns on Example 1 of this invention in the state before the installation of a shield electric wire. It is the disassembled perspective view which showed the detailed structure of the internal housing assembly with which the connector for electric wires shown in FIG. 1 is equipped. It is the perspective view which showed the external appearance structure of the shield electric wire integrated in the connector for electric wires shown in FIG. 3 shows a state in which the shielded electric wire described in FIG. 3 is attached to a holder provided in the electric wire connector shown in FIG. 1, wherein (a) relates to a perspective view of the external configuration, and (b) shows the holder in the lateral direction. It is related with the side view made into the cross section. 4A and 4B show the shape of the insertion hole for the internal wire provided in the holder required for attaching the shielded wire to the holder described in FIGS. 4A and 4B, and FIG. 4A relates to the shape on the near side in the insertion direction. (B) relates to the shape on the back side in the insertion direction. It is the perspective view which showed the external appearance structure after incorporating the shield electric wire demonstrated in FIG. 3 in the connector for electric wires demonstrated in FIG. It is the figure which made the cross section the connector for electric wires demonstrated in FIG. 6 by the side surface direction.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 External housing 2 Back shell 2a Caulking part 2b Locking lance 2c, 5a Locking part 2d Crimping locking part 3 Holder 3a Insertion hole for internal wire 4 Internal housing assembly 5 Front shell 10 Shielded wire 10a Inner shield covering part 10b Braided portion 10c Outer shield covering portion 41 Internal housing 42 Signal contact 42a. 43a Soldering part 43 Shield contact 43b Wire holding barrel 43c Square hole

Claims (4)

  A contact having a contact portion to be brought into contact with the contact of the mating connector; a housing for holding and fixing the contact; and a shell for covering the housing; and further, the contact to the conductor exposed portion of the shielded wire. In the electric wire connector that can be assembled to the housing after being connected, the contact includes a signal contact provided for connection to a conductor exposed portion of the signal wire of the shielded wire, and a connection to the shield wire of the shielded wire And the housing is capable of holding and fixing the signal contact and the shield contact facing each other, and the shell sandwiches the housing from a direction facing each other. Cover the housing and engage and hold each other That 1 consists of a pair of ones, at a predetermined position of the contact for the shield wire connector, wherein a holder for holding in alignment at least said signal lines are fixed and held.   2. The electric wire connector according to claim 1, wherein the signal contact includes a conductor piece having one end side as a connection portion to the signal line and the other end side as the contact portion, and the shield contact is provided at one end side. It has a wire holding barrel for holding the shielded wire by caulking, and has a connecting portion for the shielded wire in the middle part and a conductor piece having the other end side as the contact portion. Wire connector.   3. The electric wire connector according to claim 2, wherein the connecting portion in the signal contact and the connecting portion in the shielding contact are arranged on the same plane. connector. The electric wire connector according to any one of claims 1 to 3, further comprising an outer housing for storing and holding an assembly formed by holding and fitting the housing with the pair of shells. Electrical wire connector characterized by that.

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