JP5659394B2 - Terminal crimping device - Google Patents

Description

  The present invention relates to a terminal crimping apparatus used for crimping a crimp terminal to a shielded electric wire in a crimp terminal structure provided in an electrical connector used in an electronic control device or the like.

  As shown in FIG. 19, a conventional connector socket 100 in this type of electrical connector has a configuration in which a socket-side electrical contact terminal 101 is mounted on a socket-side insulating housing 102 to form a socket fitting portion 103. The side electrical contact terminal 101 includes a socket-side outer conductor 105 and a socket-side inner conductor 106, and the socket-side outer conductor 105 includes a shield outer cylinder 107. Then, on both side portions of the shield outer cylinder 107, spring-like shield contact terminals 108 are formed by cut and raised tongue pieces.

  Further, as shown in FIG. 19, the connector plug 110 is configured by inserting a plug-side electrical contact terminal 112 as a crimp terminal into a plug-side insulating housing 111. As shown in FIG. The contact terminal 112 includes a plug-side outer conductor 114, a dielectric 116, and a plug-side inner conductor 113, and the plug-side outer conductor 114 includes a shield outer cylinder 117, a crimping tool insertion port 115, and an outer conductor crimping portion 118. have.

  Then, the plug-side inner conductor 113 is press-fitted into the center conductor press-fitting hole 116b (see FIG. 21) of the dielectric 116, the plug-side inner conductor 113 is attached to the dielectric 116, and the dielectric 116 is press-fitted into the shield outer cylinder 117. Thus, the plug-side electrical contact terminal 112 is configured.

  In this case, as shown in FIG. 21, the outer peripheral surface portion 116a of the dielectric 116 is press-fitted while being in sliding contact with the inner peripheral surface portion 117a of the shield outer cylinder 117, but the outer peripheral surface portion 116a of the dielectric 116 and the shield outer cylinder 117 Since there is a clearance (backlash) between the inner peripheral surface portion 117 a and the crimping piece 120, which is a terminal barrel of the signal line crimping portion 119 of the plug-side inner conductor 113, may be displaced from the center of the crimping tool insertion port portion 115. there were.

  Further, in the conventional terminal crimping apparatus, the anvil unit as a pressure receiving means for receiving the plug-side electrical contact terminal at a predetermined crimping position, and the plug-side electrical contact terminal are crimped to the end of the shielded cable together with the anvil unit. As shown in FIG. 22, the anvil unit includes a signal line anvil 121, and the crimper unit includes a crimp piece 120 of the signal line crimping portion 119 together with the signal line anvil 121. Some have signal line crimpers 122 to be crimped.

  The signal line anvil 121 includes a terminal crimping anvil part 123. The signal line crimper 122 includes a pair of claw parts 124 and a terminal crimping anvil part 123 into which the terminal crimping anvil part 123 can be introduced. The insertion part 125 is provided, and the crimping piece 120 of the signal line crimping part 119 is crimped by using the terminal crimping anvil part 123 and the claw part 124 to crimp the signal line of the shielded wire (none of which is shown).

  Moreover, as a conventional terminal crimping device, the crimp terminal in the connector housing of the electrical connector is crimped to the end portion of the shielded electric wire (referred to as the portion including the signal line end portion and the outer covering end portion). Some have a pressure-bonding mechanism (see Patent Document 1).

  In this case, in the electrical connector, the connector housing includes a bottom plate portion, a pair of side plate portions continuous on both sides of the bottom plate portion, and a number of partition plates arranged in parallel with a predetermined interval between these side plate portions. A resin molded product that is integrally formed, and a terminal accommodating chamber for accommodating a crimp terminal is defined between the side plate portion and the partition plate and between the partition plates. In addition, an anvil insertion opening for inserting the anvil of the crimping mechanism is formed at a predetermined position of the bottom plate portion. The crimp terminal includes a wire barrel (crimp piece) to be crimped to the signal line end of the shielded electric wire and an installation barrel (crimp piece) to be crimped to the outer covering end of the shielded electric wire.

  The crimping mechanism includes a pressure receiving portion serving as a pressure receiving means for receiving the crimp terminal accommodated in the connector housing at a predetermined crimping position, and an application as a pressing means for crimping the crimp terminal to the end of the shielded electric wire together with the pressure receiving portion. The pressure receiving portion is a signal line anvil that receives the wire barrel portion, and the pressure receiving portion is a signal line crimper that crimps the crimp terminal to the end of the shielded electric wire between the pressure portion and the signal wire anvil. Respectively.

  Then, the signal line crimper faces the crimp terminal in the terminal insertion chamber corresponding to the crimp position from the open portion of the terminal insertion chamber. The signal line anvil faces the crimp terminal in the terminal insertion chamber corresponding to the crimp position via the anvil insertion port. The signal line crimper and the signal line anvil sandwich the wire barrel portion of the crimp terminal between them, thereby crimping the wire barrel portion and crimping the crimp terminal to the shielded electric wire.

JP 07-335363 A

  As shown in FIG. 21, when the plug-side electrical contact terminal 112 of the conventional crimp terminal structure is assembled, there is a clearance (gutter between the outer peripheral surface portion 116a of the dielectric 116 and the inner peripheral surface portion 117a of the shield outer cylinder 117. ), The crimping piece 120 of the signal line crimping portion 119 of the plug-side inner conductor 113 may be displaced from the center of the crimping tool insertion port 115.

  For this reason, the space position of collective connection cannot be ensured precisely. Therefore, in order to ensure the space position of the batch connection precisely, the crimping teeth (terminal crimping anvil part 123 and the pair of claws 124) of the crimping tool (signal line anvil 121 and signal line crimper 122) and signal line crimping are used. If the crimping tool is designed so that the crimping piece 120 of the part 119 does not interfere, the plug-side electrical contact terminal 112 cannot be miniaturized, the overall size of the electrical connector becomes large, and the miniaturization is difficult. In particular, in the type in which the crimping piece 120 of the signal line crimping portion 119 of the plug-side inner conductor 113 housed in the crimping tool insertion opening 115 is crimped and crimped to the shielded wire, the shielded wire is clamped. Since the range that can be done is remarkably restricted, the above-mentioned problems are conspicuous.

  Further, in the conventional terminal crimping apparatus shown in FIG. 22, the crimping of the signal line crimping part 119 is performed using the terminal crimping anvil part 123 of the signal line anvil 121 and the pair of claws 124 of the signal line crimper 122. Since the signal line is crimped by crimping the piece 120, when the signal line is crimped, the pair of claws 124 of the signal line crimper 122 has an expanding force in the direction indicated by the arrow in FIG. In addition, since a crack W occurs at the tip of the signal line crimper 122, it is impossible to make the tip of the signal line crimper 122 thin, and the plug-side electrical contact terminal 112 cannot be reduced in size. There is a problem that the overall size of the electrical connector is increased, making it difficult to reduce the size.

  Further, when the signal line is crimped by the signal line crimping section 119 in the crimping tool insertion slot 115, since the both side walls 115a exist in the crimping tool insertion slot 115, the claw 124 is made thick. I couldn't. If the tip part of the claw part 124 is made thin, a crack W is generated at the tip part of the signal line crimper 122. Therefore, it is impossible to make the tip part of the signal line crimper 122 thin. There was a problem that the contact terminal 112 could not be reduced in size, and the overall size of the electrical connector was increased, making it difficult to reduce the size.

  Further, since the signal line crimper 122 is plate-shaped, the strength thereof is insufficient, and a crack W is generated at the front part of the signal line crimper 122. Therefore, the front part of the signal line crimper 122 may be narrowed. There is a problem that the plug-side electrical contact terminal 112 cannot be reduced in size and the overall size of the electrical connector is increased, making it difficult to reduce the size.

  Further, the conventional terminal crimping device disclosed in Patent Document 1 pushes the signal line crimper into the terminal insertion chamber from the open portion of the terminal insertion chamber and the signal line anvil from the anvil insertion port, respectively. By crimping the wire barrel portion of the crimp terminal, the wire barrel portion is crimped and the crimp terminal is crimped to the shielded electric wire, and the outer conductor holds the inner conductor through the dielectric in the shield outer cylinder. In crimped terminals (electrical contact terminals), the signal line crimper is not of the type that crimps the crimped piece of the signal line crimping part in the crimping tool insertion port together with the signal line anvil and crimps the signal line of the shielded wire. .

  An object of the present invention is to provide a terminal crimping device that can reduce the size of an electrical contact terminal, which is a crimp terminal, can reduce the size of a connector that includes the electrical contact terminal, and contribute to the miniaturization of the entire electrical connector. Is to provide.

To achieve the above object, a terminal crimping apparatus according to the present invention, the crimp terminal is provided with a dielectric for holding the inner conductor and outer conductor and the inner conductor, the outer conductor crimping tool insertion shield outer tube A shielded wire crimping portion for crimping the mouth portion and the shielded wire, and the inner conductor has a signal wire crimping portion for crimping the signal wire of the shielded wire, and receives the crimped terminal at a predetermined crimping position. An anvil unit as a pressure receiving means, and a crimper unit as a pressure means for crimping the crimp terminal to the end of the shielded electric wire together with the anvil unit, the anvil unit has an anvil for signal line, The crimper unit has a signal line crimper for caulking the crimped piece of the signal line crimping part in the crimping tool insertion port together with the signal line anvil, The signal line anvil includes a terminal crimping anvil part, a pair of claw clamp parts located on both sides of the terminal crimping anvil part, and a claw insertion groove between the terminal crimping anvil part and the claw clamp part. The signal line crimper has a pair of claws, and a terminal crimping anvil insertion part capable of introducing the terminal crimping anvil part between the claws, and the terminal crimping anvil part and the pair of claws When crimping the signal line by crimping the crimping piece of the signal wire crimping part using the part, the terminal crimping anvil part is guided into the terminal crimping anvil insertion part, and the pair of claws are the nails Inserting into the insertion groove portion prevents the pair of claws from spreading, and the top surface portion of the terminal crimping anvil portion is crimped to the signal line when the signal wire is crimped by the signal wire crimping portion. On the outside A pressure receiving surface portion that receives a caulking load from the signal line crimper, the pressure receiving surface portion being higher than a top surface portion of the claw clamp portion, and both side wall portions of the crimping tool insertion port portion are The pressure receiving surface portion is configured to support the signal line crimping portion so as not to contact the top surface portion of the claw clamp portion, and in addition, the outer surface portions of the pair of claw portions abut against the outer surface portion of the claw insertion groove portion. In addition, the inner surfaces of the pair of claws are formed in a tapered shape between the tip portions of the pair of claws and the pressure receiving surface in the state where the signal lines are arranged and the signal lines are crimped , and The pressure receiving surface portion is formed higher than the top surface of the claw clamp portion, and the signal line crimper does not interfere with the intermediate dielectric and shield of the shielded wire when the crimping piece of the signal line crimping portion is crimped. So that the one It is characterized by being made into a thick part except for the front side part of a pair of nail | claw part.

  With such a configuration, when crimping a signal line by crimping a crimping piece of a signal line crimping part using a terminal crimping anvil part and a signal line crimper, by guiding the terminal crimping anvil part into the terminal crimping anvil insertion part, The crimping position and the crimping shape can be stabilized, and the pair of claws of the signal line crimper can be inserted into the nail insertion groove, thereby preventing the pair of claws from expanding. For this reason, the durability of the signal line crimper is improved, the tip of the signal line crimper can be prevented from being cracked, and the tip of the signal line crimper can be made thinner. Therefore, the electrical contact terminal, which is a crimp terminal, can be miniaturized, and a connector (for example, a connector plug) including the electrical contact terminal can be miniaturized, and the entire electrical connector can be miniaturized.

With this configuration, the strength of the signal line crimper is improved, the tip of the signal line crimper can be prevented from being cracked, and the tip of the signal line crimper can be made thinner. Thus, crimp terminal size reduction of the electric contact terminal is Hakare a connector comprising the electrical contact terminal (e.g., a connector plug) can be made smaller, the size of the entire electrical connector capable ing.

The terminal crimping apparatus according to the present invention, in the terminal crimping apparatus according to the present invention described above, characterized in that the formation of the pair of claw portions side of the thick portion in the inclined surface.

  According to the terminal crimping apparatus according to the present invention, the strength of the signal line crimper can be improved, the thin tip of the signal line crimper can be prevented from being cracked, and the tip of the signal line crimper can be narrowed. become. Therefore, the electrical contact terminal, which is a crimp terminal, can be miniaturized, and a connector (for example, a connector plug) including the electrical contact terminal can be miniaturized, and the entire electrical connector can be miniaturized.

  Further, according to the terminal crimping apparatus according to the present invention, when the inner conductor is accommodated and held in the shield outer cylinder via the dielectric, the dielectric holding the inner conductor is used as the protrusion on the inner surface of the shield outer cylinder. By crushing while being in sliding contact with the shield outer cylinder, the clearance between the outer peripheral surface portion of the dielectric and the inner peripheral surface portion of the shield outer cylinder can be eliminated. The crimping piece of the signal line crimping portion is not displaced from the center of the crimping tool insertion port. In this state, the signal line crimper and the signal line anvil can be crimped together with the crimped piece of the signal line crimping portion in the crimping tool insertion port, thereby crimping the signal line of the shielded wire. Thus, since the space position of the collective connection can be ensured precisely, as in the past, in order to ensure the space position of the collective connection precisely, the crimp teeth and the crimp pieces of the signal line anvil and the signal line crimper It is not necessary to design the signal line anvil and the signal line crimper so as not to interfere with each other, and the electrical contact terminal which is a crimp terminal can be reduced in size, and the connector (for example, connector plug) including the electrical contact terminal can be reduced in size. The entire electrical connector can be downsized.

FIG. 3 is a perspective view showing a connection state between a connector socket and a connector plug in the electrical connector. FIG. 3 is a perspective view showing a separated state of the connector socket and the connector plug in the electrical connector. FIG. 3 is a schematic cross-sectional view of a separated state of the connector socket and the connector plug in the electrical connector. FIG. 3 is a schematic longitudinal sectional view of the connector socket and the connector plug in a combined state in the electrical connector. It is a perspective view of the disassembled state of a connector plug. It is a front view of a plug side insulating housing. It is sectional drawing which follows the DD line | wire of FIG. It is a perspective view of the plug side electric contact terminal which has a crimp terminal structure concerning the present invention. It is a perspective view of the decomposition | disassembly state of the plug side electrical contact terminal. It is explanatory drawing of the state which press-fits a dielectric material in a shield outer cylinder. It is explanatory drawing of the terminal part of a shielded electric wire. It is a perspective view of the disassembled state of a connector socket. 1 is a schematic perspective view of a terminal crimping apparatus according to the present invention. It is a schematic perspective view of the separation state of the terminal crimping apparatus. It is a front view of a signal line anvil and a signal line crimper as a signal line crimping mechanism in the terminal crimping apparatus. It is explanatory drawing of the state which crimps | bonds the signal wire | line of a shield electric wire with the signal wire | line crimper with an anvil for signal wire | line. It is explanatory drawing of the plug side electrical contact terminal and signal line crimper set to the crimp terminal mounting part. It is sectional drawing which follows the EE line | wire of FIG. FIG. 6 is a schematic cross-sectional view of a separated state of a connector socket and a connector plug in an electrical connector having a conventional crimp terminal structure. It is a top view of the plug side electric contact terminal which has the conventional crimp terminal structure. It is explanatory drawing of the state which press-fits a dielectric material in the shield outer cylinder in the plug side electrical contact terminal. It is a front view of a signal line anvil and a signal line crimper as a signal line crimping mechanism in a conventional terminal crimping apparatus. In the conventional terminal crimping | compression-bonding apparatus, it is explanatory drawing of the state which the crimper for signal wires crimps | bonds the signal wire of a shielded electric wire with the anvil for signal wires.

  It is possible to reduce the size of the electrical contact terminal, which is a crimp terminal, and to reduce the size of a connector (for example, a connector plug) provided with this electrical contact terminal. When accommodating and holding the inner conductor via a dielectric, the dielectric holding the inner conductor is crushed and pressed into the shield outer cylinder while the projection provided on the dielectric is brought into sliding contact with the projection sliding contact surface. The clearance between the outer peripheral surface portion of the dielectric and the inner peripheral surface portion of the shield outer cylinder is eliminated, and the space position of the collective connection is ensured accurately, and the crimping tool (signal line anvil and signal line crimper) is secured. This eliminates the need to design a crimping tool so that the crimping tooth and the crimping piece do not interfere with each other, and achieves downsizing of the plug-side electrical contact terminal, which is a crimping terminal.

  In addition, it is possible to reduce the size of the electrical contact terminal, which is a crimp terminal, and to reduce the size of a connector (for example, a connector plug) having the electrical contact terminal, thereby contributing to the overall size reduction of the electrical connector. When crimping a signal wire by crimping the crimping piece of the signal wire crimping part using the crimping anvil part and signal line crimper, the terminal crimping anvil part is guided into the terminal crimping anvil insertion part, so that the crimping position and crimping shape In addition, the pair of claws of the signal line crimper is inserted into the nail insertion groove, thereby preventing the pair of claws from expanding and improving the durability of the signal line crimper. This was achieved by preventing the tip of the wire crimper from becoming cracked and making the tip of the signal wire crimper thinner.

  As shown in FIGS. 1 and 2, the electrical connector A includes a connector plug B and a connector socket C. The connector plug B is configured by providing a plug-side electrical contact terminal 2 which is a crimp terminal and is an electrical contact terminal in the plug-side insulating housing 1.

  As shown in FIG. 5 to FIG. 7, the plug-side insulating housing 1 is provided with a plug-side fitting portion 3 and an electrical contact terminal insertion portion 4 which are rectangular in shape and have a front shape, and this electrical contact terminal insertion portion 4. Is connected to the inside of the plug-side fitting portion 3. A cantilever lance 5 is formed on the ceiling of the electrical contact terminal insertion portion 4. The electrical contact terminal insertion portion 4 is formed with a retainer insertion portion 6, the plug-side insulating housing 1 is provided with a lock lever 7, and the lock lever 7 is provided with a locking projection 8. It is.

  As shown in FIG. 5, the plug-side electrical contact terminal 2 includes a plug-side outer conductor 11 that is an outer conductor, a dielectric 12, and a plug-side inner conductor 13 that is an inner conductor. The plug-side outer conductor 11 is a shield. The outer cylinder 14, the crimping tool insertion port 15, the shield crimping portion 16, and the outer covering crimping portion 17 are configured. The shield crimping portion 16 and the outer covering crimping portion 17 constitute the shielded wire crimping portion 10.

  As shown in FIG. 9, the shield outer cylinder 14 is a cylindrical body having a quadrangular cross section, and dielectric locking holes 14A are formed on the upper and lower surfaces 14a and 14b of the shield outer cylinder 14 in FIG. In addition, the outer surface portions of the side wall portions 14c and 14d of the shield outer cylinder 14 are terminal contact portions 14C, and the inner surfaces of the side wall portions 14c and 14d are protrusion sliding contact portions 14B. Although the surface portion 14a described above is continuous with the side wall portion 14c, it is not continuous with the side wall portion 14d, and as shown in FIGS. 9 and 10, the end portion of the surface portion 14a is in contact with the end portion of the side wall portion 14d. These form the joint 14e.

  Further, as shown in FIGS. 5 and 9, the crimping tool insertion port portion 15 has side wall portions 15 a and 15 b on both sides thereof, and one end portion of these side wall portions 15 a and 15 b is the shield outer cylinder 14. The side wall portions 14 c and 14 d are connected to each other, and the other end portions of the side wall portions 15 a and 15 b are connected to the shield crimping portion 16. The shield crimping portion 16 includes a crimping piece 18 that is a terminal barrel standing up in a U-shape. The outer covering crimping portion 17 includes a holding crimping piece 19 which is a terminal barrel standing up in a U-shape.

  As shown in FIGS. 5 and 9, the dielectric 12 has a dielectric body 12A having a square cross section, and an inner conductor press-fitting hole 20 is formed at the center of the dielectric body 12A. In FIG. 9, the upper and lower surface portions 12a and 12b of the dielectric body 12A are formed with locking projections 12B, and the left and right surface portions 12c and 12d are parallel to the two protrusions 21 in FIG. And projecting. These protrusions 21 are formed from protrusions extending in the connector insertion / extraction direction from the front side (left side in FIG. 9) of the dielectric body 12A to the center. Further, a lateral hole portion 22 is provided on the front side of the dielectric body 12A so as to cross the inner conductor press-fitting hole portion 20.

  As shown in FIG. 5, the plug-side inner conductor 13 includes a contact portion 23 and a signal line crimping portion 24. The signal line crimping portion 24 includes a crimping piece 25 that is a terminal barrel standing up in a U-shape.

  Then, the contact portion 23 of the plug-side inner conductor 13 is press-fitted into the inner conductor press-fitting hole portion 20 of the dielectric 12, the plug-side inner conductor 13 is attached to the dielectric 12, and the dielectric 12 is connected to the plug-side outer conductor 11. Press fit into the shield outer cylinder 14. In this case, as shown in FIG. 10, the protruding portion 21 of the dielectric 12 is crushed while being in sliding contact with the protruding sliding contact portion 14B of the shield outer cylinder 14, and press fitting is performed, as shown in FIG. The locking projection 12B is locked in the dielectric locking hole 14A of the shield outer cylinder 14, and the plug-side inner conductor 13 is accommodated and held in the shield outer cylinder 14 via the dielectric 12.

  When the locking projection 12B is locked to the dielectric locking hole 14A, the joint 14e is opened and the surface portion 14a is slightly lifted in the direction of the arrow in FIG. Since it can be inserted into the shield outer cylinder 14, the space between the side wall portions 14c and 14d hardly expands, and the sliding of the protruding portion 21 to the protruding sliding contact portion 14B is hardly affected.

  Thus, the protrusion 21 is crushed while being in sliding contact with the protrusion sliding contact portion 14B, and press-fitting is performed, so that it is possible to eliminate the backlash (clearance) between the dielectric 12 and the shield outer cylinder 14. For this reason, the signal line crimping portion 24 of the plug-side inner conductor 13 is not displaced from the center of the crimping tool insertion port portion 15, and the space position of collective connection described later can be ensured precisely.

  As shown in FIGS. 13 and 14, the terminal crimping device 30 includes a pressure receiving portion as a pressure receiving means for receiving the plug-side electrical contact terminal 2, which is a crimp terminal, at a predetermined crimping position, and a covered electric wire together with the pressure receiving portion. Pressure unit as pressure means for crimping the plug-side electrical contact terminal 2 to the end of the shielded wire S supplied from a supply mechanism (not shown), and a crimp terminal mounting for setting the plug-side electrical contact terminal 2 A portion 53 is provided (see FIG. 17). The pressure receiving unit includes an anvil unit 31, and the pressurizing unit includes a crimper unit 32.

  The anvil unit 31 includes a signal line anvil 33, a shield anvil 34, and an outer covering anvil 35. The crimper unit 32 includes the signal line anvil 33 and the crimp piece 25 of the signal line crimp portion 24. The crimper 36 for signal line crimping 36, the crimper 18 for shield crimping portion 16 together with the anvil 34 for shielding, and the crimping piece 19 for holding the outer coating crimping portion 17 together with the anvil 35 for outer coating are added. It has an outer covering crimper 38 for fastening.

  As shown in FIG. 15, the signal line anvil 33 includes an anvil body 33 </ b> A, and the anvil body 33 </ b> A includes a pair of terminal crimping anvil parts 40 that are crimping teeth and a pair of terminals located on both sides of the terminal crimping anvil part 40. The claw clamp part 41 is formed, and a claw insertion groove part 42 is provided between the terminal crimping anvil part 40 and the claw clamp part 41. The claw clamp part 41 prevents the signal line crimper 36 from opening by clamping the claw part 43 of the signal line crimper 36 with the terminal crimping anvil part 40.

  As shown in FIGS. 15 and 16, the top surface portion of the terminal crimping anvil portion 40 is placed on the outer surface of the signal wire crimping portion 24 when the crimping piece 25 of the signal wire crimping portion 24 in the plug-side inner conductor 13 is crimped. The pressure receiving surface portion 40 </ b> A is in contact with the crimping load from the signal line crimper 36. As shown in FIG. 16, the pressure receiving surface portion 40 </ b> A is higher than the top surface portion 41 </ b> A of the claw clamp portion 41, and both side wall portions 15 a and 15 b of the crimping tool insertion port portion 15 are the top surface portions of the claw clamp portion 41. The signal line crimping portion 24 is supported by the pressure receiving surface portion 40A so as not to contact 41A.

As shown in FIG. 15, the signal line crimper 36 has a crimper body 36 </ b> A, and the crimper body 36 </ b> A has a pair of claws 43 that are crimp teeth and a signal line between the claws 43. The terminal crimping anvil insertion part 44 which can introduce the terminal crimping anvil part 40 of the anvil 33 for use without gap is formed. The pair of claw portions 43 are formed so that the inner surface portions thereof taper from the front end portion to the pressure receiving surface portion in a state where the signal lines 60 are crimped after the signal lines 60 are arranged as clearly shown in FIG. doing. Similarly, as shown in FIG. 17, the signal line crimper 36 is formed in the thick portion 45 except for the front side portion from the approximate center of the pair of claw portions 43, and the thick portion 45 side of the claw portion 43 side. Is an inclined surface portion 46, so that the inclined surface portion 46 does not interfere with the intermediate dielectric 61 and the shield 62 of the shielded wire S as shown in FIG. 18 when the crimping piece 25 of the signal line crimping portion 24 is crimped. It is.

  As shown in FIG. 14, the shielding anvil 34 has an anvil body 34A, and the anvil body 34A is formed with a terminal crimping anvil portion 47 which is a crimping tooth. When the crimping piece 18 of the shield crimping portion 16 of the plug-side outer conductor 11 is crimped, the pressure receiving surface portion 47 </ b> A contacts the outer surface of the shield crimping portion 16 and receives the crimping load from the shield crimper 37. .

  As shown in FIG. 14, the shield crimper 37 has a crimper main body 37 </ b> A. The crimper main body 37 </ b> A has a pair of claws 48 that are crimping teeth, and terminals of the shield anvil 34 between the claws 48. The terminal crimping anvil insertion part 49 which can introduce the crimping anvil part 47 without gap is formed.

  As shown in FIG. 14, the outer covering anvil 35 has an anvil main body 35A, and the anvil main body 35A is formed with a terminal crimping anvil portion 50. The top surface portion of the terminal crimping anvil portion 50 is When the crimping piece 19 for holding the outer covering crimping portion 17 in the plug-side outer conductor 11 is crimped, the pressure receiving surface portion 50A that contacts the outer surface of the outer covering crimping portion 17 and receives the crimping load from the outer covering crimper 38 is applied. It is formed.

  As shown in FIG. 14, the outer covering crimper 38 has a crimper body 38 </ b> A. The crimper body 38 </ b> A has a pair of claws 51 that are crimped teeth and an external space between these claws 51. The terminal crimping anvil insertion part 52 which can introduce the terminal crimping anvil part 50 of the covering anvil 35 without gap is formed.

  Then, as shown in FIG. 13, the signal line anvil 33, the shield anvil 34, and the outer covering anvil 35 are overlapped and fastened by an anvil holding fastening means (not shown) to form an anvil unit 31. Yes.

  Further, as shown in FIG. 13, the signal line crimper 36, the shield crimper 37, and the outer covering crimper 38 are overlapped and fastened by a crimper holding fastening means (not shown) to form a crimper unit 32. Yes.

  As shown in FIG. 17, the crimp terminal mounting portion 53 includes a shield outer cylinder holding member 54 that holds the shield outer cylinder 14 of the plug-side outer conductor 11 and a carrier that holds the carrier 11 </ b> A of the plug-side outer conductor 11. The holding member 55 is arranged.

  Next, the operation of crimping and connecting the plug-side electrical contact terminal 2 to the end of the shielded electric wire S using the terminal crimping device 30 configured as described above will be described.

  As described above, in the plug-side electrical contact terminal 2, when the dielectric 12 is press-fitted into the shield outer cylinder 14, the protrusion 21 is crushed while being in sliding contact with the protrusion sliding contact portion 14 </ b> B. The backlash (clearance) between the body 12 and the shield outer cylinder 14 is eliminated, and the signal wire crimping portion 24 is crimped without the signal wire crimping portion 24 of the plug-side inner conductor 13 being displaced from the center of the crimping tool insertion port portion 15. It is located in the tool insertion slot 15.

  As shown in FIG. 11, the shielded wire S connected to the plug-side electrical contact terminal 2 is first processed at its tip to expose the signal line 60, the intermediate dielectric 61 and the shield 62 from the outer coating 63. .

  Then, as shown in FIG. 17, the signal line 60 of the shielded electric wire S is inserted between the crimping pieces 25 of the signal line crimping part 24 of the plug-side inner conductor 13, and the shield crimping part 16 of the plug-side outer conductor 11 is crimped. The shield 62 of the shielded electric wire S is inserted and disposed between the pieces 18, and the outer covering 63 is inserted and disposed between the holding crimping pieces 19 of the outer covering crimping portion 17 of the plug-side outer conductor 11.

  Then, as shown in FIG. 17, the plug-side electrical contact terminal 2 is set on the crimp terminal mounting portion 53, and the carrier 11A of the plug-side outer conductor 11 is held by the carrier holding member 55. The outer surface of the signal wire crimping portion 24 of the plug-side inner conductor 13 is opposed to the pressure-receiving surface portion 40A of the terminal crimping anvil portion 33 of the plug 33, and the plug-side outer conductor is opposed to the pressure-receiving surface portion 47A of the terminal crimping anvil portion 47 of the shield anvil 34. 11, the outer surface of the outer covering crimping portion 17 of the plug-side outer conductor 11 faces the pressure receiving surface portion 50 </ b> A of the terminal crimping anvil portion 50 of the outer covering anvil 35. The shield outer cylinder 14 of the plug-side outer conductor 11 may be held by the shield outer cylinder holding member 54, and the shield outer cylinder 14 of the plug-side outer conductor 11 may be held by the shield outer cylinder holding member 54.

  In this case, the terminal crimping anvil portion 40 of the signal wire anvil 33 is located at the lower open portion of the crimping tool insertion port portion 15, and the signals of the pressure receiving surface portion 40 </ b> A of the terminal crimping anvil portion 40 and the plug-side inner conductor 13. There is a slight gap between the outer surface of the wire crimping portion 24 so that the side wall portions 15a and 15b of the crimping tool insertion port portion 15 do not interfere with the terminal crimping anvil portion 40 when arranged at a predetermined position.

  In this state, as shown in FIG. 18, the crimper unit 32 is moved to the plug-side electrical contact terminal 2 side, and the collective connection process is started. First, in the signal line crimping, the signal line crimper 36 is pushed into the crimping tool insertion port 15 from the open part on the upper side of the crimping tool insertion port 15, and the pressure receiving surface portion 40 </ b> A of the signal line crimper 36 and the terminal crimping anvil unit 40. The signal line crimping portion 24 is sandwiched between and the crimping piece 25 of the signal line crimping portion 24 is crimped, and the signal line 60 is crimped to the signal line crimping portion 24. In this case, as shown in FIG. 16, the pressure receiving surface portion 40A of the terminal crimping anvil portion 40 of the signal line anvil 33 is higher than the top surface portion 41A of the claw clamp portion 41, and both sides of the crimping tool insertion port portion 15 are provided. The signal line crimping portion 24 is supported by the pressure receiving surface portion 40A so that the wall portions 15a, 15b do not contact the top surface portion 41A of the claw clamp portion 41.

  Further, as shown in FIG. 16, the terminal crimping anvil part 40 of the signal line anvil 33 is inserted into the terminal crimping anvil insertion part 44 of the signal line crimper 36 without gaps in the crimping tool insertion port 15, and the signal line The pair of claw portions 43 of the crimper 36 for insertion are inserted into the nail insertion groove portions 42, and the outer surface portions 43a of the pair of claw portions 43 come into contact with the outer surface portions 42a of the nail insertion groove portions 42, so And the signal line crimper 36 is prevented from opening.

  Further, as shown in FIGS. 17 and 18, the signal line crimper 36 is thick except for the front side portion from the approximate center of the pair of claws 43, and therefore the strength of the signal line crimper 36 is increased. However, since the thickened portion 45 has the inclined surface portion 46 on the claw portion 43 side, it does not interfere with the intermediate dielectric 61 and the shield 62 of the shielded wire S.

  Next, in the shield crimping, the terminal crimping anvil part 47 of the shield anvil 34 is inserted into the terminal crimping anvil insertion part 49 of the shield crimper 37 without a gap, and the crimping piece 18 of the shield crimping part 16 is crimped to seal the shield. A shield 62 is crimped to the crimping portion 16.

  Further, in the outer sheath crimping, the terminal crimping anvil portion 50 of the outer sheathing anvil 35 is inserted into the outer sheathing terminal crimping anvil insertion portion 52 without any gap, and the holding crimping piece 19 of the outer sheath crimping portion 17 is crimped. Thus, the outer coating 63 is crimped to the outer coating crimping portion 17. In addition, the plug-side electrical contact terminal 2 is disconnected from the carrier 11A simultaneously with the above-described crimping.

  After the plug-side electrical contact terminals 2 are collectively connected as described above, the crimper unit 32 is separated from the crimp terminal mounting portion 53, and the plug-side electrical contact terminals 2 are conveyed outside.

  As shown in FIGS. 3 and 4, the plug-side electrical contact terminal 2 is inserted into the electrical contact terminal insertion portion 4 of the plug-side insulating housing 1, and the lance portion 5 is outside the shield of the plug-side electrical contact terminal 2. By engaging the end portion of the cylinder 14 and inserting the retainer 26 into the retainer insertion portion 6, the plug-side electrical contact terminal 2 is fixed to the plug-side insulating housing 1, and the connector plug B is configured.

  As shown in FIG. 12, the connector socket C, which is a mating connector, is composed of a socket-side insulating housing 70 and a socket-side electrical contact terminal 71, which is a mating terminal, and the socket-side electrical contact terminal 71 is a mating terminal. The socket-side outer conductor 72 is an outer conductor of the socket and the socket-side inner conductor 73 is an inner conductor of the mating terminal.

  The socket-side insulating housing 70 has a socket-side fitting portion 74 having a front rectangular shape, and the bottom surface of the socket-side fitting portion 74 is a mounting surface. A lock lever insertion portion 75 is formed on the ceiling portion of the socket-side fitting portion 74 from the front edge portion to the rear portion thereof, and as shown in FIG. A portion 76 is formed. Further, as shown in FIGS. 3 and 4, an inner conductor mounting portion 77 and an outer conductor mounting portion 78 are formed on the end wall portion of the socket-side fitting portion 74.

  As shown in FIG. 12, the socket-side outer conductor 72 includes a shield outer cylinder 79 formed by bending a metal plate material, and the end portion of the shield outer cylinder 79 is covered with an end shield portion 80. . Further, shield contact terminals 81 made of tongue pieces are formed on both side surfaces of the shield outer cylinder 79 by being cut and raised on the center side. A pair of shield terminals 82 are formed on the shield outer cylinder 79.

  Further, as shown in FIG. 12, the socket-side inner conductor 73 has a configuration in which a connection terminal 84 is provided in the contact portion 83.

  As shown in FIGS. 3 and 4, the socket-side inner conductor 73 is attached to the inner conductor attaching portion 77. The socket-side outer conductor 72 is mounted on the outer conductor mounting portion 78. That is, the shield outer cylinder 79 of the socket-side outer conductor 72 is accommodated in the socket-side fitting portion 74 through the outer conductor mounting portion 78 from the rear of the socket-side insulating housing 70.

  The connector plug B and the connector socket C are coupled as follows. That is, as shown in FIG. 4, the plug-side fitting portion 3 of the connector plug B is fitted to the socket-side fitting portion 74 of the connector socket C, and the contact portion 83 of the socket-side inner conductor 73 is connected to the plug-side inner conductor. 13, the inner conductors 73 and 13 are brought into conduction with each other, and the terminal contact portion 14 </ b> C on the outer surface of the shield outer cylinder 14 in the plug-side outer conductor 11 is connected to the shield contact terminal 81 of the socket-side outer conductor 72. The two external conductors 11 and 72 are brought into contact with each other, the lock lever 7 of the connector plug B is inserted into the lock lever insertion portion 75 of the connector socket C, and the locking locking projections are inserted into the locking holes 76 thereof. The part 8 is locked and brought into the locked state.

  As described above, according to the first embodiment of the present invention, since the two protrusions 21 protrude in parallel on both side surfaces of the dielectric 12, the dielectric 12 is provided on the shield outer cylinder 14. When the plug-side inner conductor 13 is housed and held through, the dielectric 12 holding the plug-side inner conductor 13 is crushed while the protrusion 21 is slidably contacting the protrusion-sliding contact portion 14B, and press-fitted into the shield outer cylinder 14 By doing so, the left and right balance can be achieved, and the clearance (backlash) between the outer peripheral surface portion of the dielectric 12 and the inner peripheral surface portion of the shield outer cylinder 14 can be eliminated.

  For this reason, the crimping piece 25 of the signal line crimping portion 24 of the plug-side inner conductor 13 is not displaced from the center of the crimping tool insertion port portion 15. In this state, the signal line crimper 36 can crimp the crimping piece 25 of the signal line crimping part 24 in the crimping tool insertion port 15 together with the signal line anvil 33 to crimp the signal line 60 of the shielded wire S. it can. As described above, since the space position of the collective connection can be accurately ensured, the signal line anvil 33 and the signal line crimper 36, which are crimping tools, are used in order to accurately secure the space position of the collective connection as in the prior art. It is not necessary to design the signal line anvil 33 so that the terminal crimping anvil part 40 and the claw part 43, which are the crimping teeth of the terminal, and the crimping piece 25 of the signal line crimping part 24 do not interfere with each other. The connector plug B can be miniaturized, and the entire electrical connector A can be miniaturized.

  Further, according to the first embodiment of the present invention, when the signal wire 60 is crimped by crimping the crimping piece 25 of the signal wire crimping portion 24 using the terminal crimping anvil portion 40 and the signal wire crimper 36, the terminal crimping is performed. By guiding the terminal crimping anvil part 40 into the anvil insertion part 52, the crimping position and the crimping shape can be stabilized, and the pair of claw parts 43 of the signal line crimper 36 are inserted into the nail insertion groove part 42. This prevents the pair of claws 43 from expanding. For this reason, the durability of the signal line crimper 36 is improved, the crack of the tip portion of the signal line crimper 36 can be prevented, and the tip portion of the signal line crimper 36 can be narrowed. Therefore, the plug-side electrical contact terminal 2 can be miniaturized, the connector plug B can be miniaturized, and the entire electrical connector A can be miniaturized.

  Further, according to the first embodiment of the present invention, when the signal wire 60 is crimped by the signal wire crimping portion 24 in the crimping tool insertion port portion 15, the side wall portions 15 a and 15 b are connected to the crimping tool insertion port portion 15. However, it is an obstacle to providing the claw clamp part 41, but the terminals 15a and 15b of the crimping tool insertion port part 15 are not in contact with the top surface part 41A of the claw clamp part 41. Since the signal wire crimping portion 24 is supported by the pressure-bonding anvil portion 40 pressure receiving surface portion 40A, the nail clamp portion 41 can be provided, and the pair of claws 43 of the signal line crimper 36 are formed in the nail insertion groove portion 42. By being inserted, the pair of claws 43 can be prevented from expanding. For this reason, the durability of the signal line crimper 36 is improved, the crack of the tip portion of the signal line crimper 36 can be prevented, and the tip portion of the signal line crimper 36 can be narrowed. Therefore, the plug-side electrical contact terminal 2 can be miniaturized, the connector plug B can be miniaturized, and the entire electrical connector A can be miniaturized.

  Further, according to the first embodiment of the present invention, the signal line crimper 36 is thick except for the front side portion from the approximate center of the pair of claw portions 43, so that the strength of the signal line crimper 36 is increased. As a result, the tip of the signal line crimper 36 can be prevented from being cracked, and the tip of the signal line crimper 36 can be made thinner. Therefore, the plug-side electrical contact terminal 2 can be miniaturized, the connector plug B can be miniaturized, and the entire electrical connector A can be miniaturized.

  In the first embodiment of the present invention described above, the anvil unit 31 is set at a fixed position and the crimper unit 32 is moved to the plug-side electrical contact terminal 2 side in the collective connection step, thereby performing collective connection. In the batch connection step, the anvil unit 31 and the crimper unit 32 may be moved to the plug-side electrical contact terminal 2 side to perform batch connection.

  In the crimp terminal structure according to the present invention, when the inner conductor is accommodated and held in the shield outer cylinder via the dielectric, the dielectric holding the inner conductor is brought into sliding contact with the inner surface of the shield outer cylinder. However, by crushing and press-fitting into the shield outer cylinder, the left and right balance can be achieved and the clearance (backlash) between the peripheral surface portion of the dielectric and the inner peripheral surface portion of the shield outer cylinder can be eliminated. The crimping piece of the signal wire crimping portion is not displaced from the center of the crimping tool insertion port, and the space position of the batch connection can be ensured precisely. Therefore, it is necessary to design the crimping tool so that the crimping teeth and crimping pieces of the crimping tools (signal line anvil and signal line crimper) do not interfere with each other in order to ensure a precise space position for the batch connection. The electrical contact terminal, which is a crimp terminal, can be reduced in size, and a connector (for example, a connector plug) including the electrical contact terminal can be reduced in size, and the entire electrical connector can be reduced in size. It is useful as a crimping terminal structure such as a coaxial connector which is mounted on an information terminal device such as an automobile electronic device or a mobile phone and used for an input / output portion thereof.

A Electrical connector B Connector plug C Connector socket (mating connector)
1 Plug side insulation housing 2 Plug side electrical contact terminal (electric contact terminal) (crimp terminal)
DESCRIPTION OF SYMBOLS 3 Plug side fitting part 4 Electrical contact terminal insertion part 10 Shield electric wire crimping part 11 Plug side outer conductor 12 Dielectric 13 Plug side inner conductor 14 Shield outer cylinder 14B Protrusion sliding contact part 15 Crimping tool insertion part 15a, 15b Side wall part 16 Shield Crimping Portion 17 Outer Cover Crimping Portion 18 Crimping Piece 19 Holding Crimping Piece 21 Projection 23 Contact Portion 24 Signal Line Crimping Portion 25 Crimping Piece 30 Terminal Crimping Device 31 Anvil Unit (Pressure Receiving Portion)
32 Crimper unit (pressurizing part)
33 Signal wire anvil 34 Shield anvil 35 External sheath anvil 36 Signal wire crimper 37 Shield crimper 38 External sheath crimper 40 Terminal crimp anvil (crimp tooth)
40A Pressure receiving surface portion 41 Claw clamp portion 41A Top surface portion 42 Claw insertion groove portion 43 Claw portion (crimping tooth)
44 Terminal crimping anvil insertion part 45 Thick part 46 Inclined surface part 47 Terminal crimping anvil part (crimping tooth)
47A Pressure receiving part 48 Claw part (crimping tooth)
49 Terminal crimping anvil insertion part 50 Terminal crimping anvil part (crimping teeth)
50A Pressure-receiving surface part 51 Claw part (crimping tooth)
52 terminal crimping anvil insertion part 53 crimping terminal mounting part 54 shield outer cylinder holding member 55 carrier holding member 60 signal line 61 intermediate dielectric 62 shield 63 outer sheath 70 socket side insulating housing 71 socket side electric contact terminal (mating side terminal)
72 Socket side outer conductor (outer conductor of mating terminal)
73 Socket side internal conductor (internal conductor of mating terminal)
74 Socket side fitting part 77 Internal conductor mounting part 78 External conductor mounting part 79 Shield outer cylinder 80 End shield part 81 Shield contact terminal 82 Shield terminal 83 Contact part 84 Connection terminal

Claims (2)

The crimp terminal includes an outer conductor, an inner conductor, and a dielectric that holds the inner conductor, and the outer conductor includes a shield outer cylinder, a crimp tool insertion port, and a shielded wire crimping portion that crimps a shielded wire, The inner conductor is configured to have a signal wire crimping portion for crimping the signal wire of the shielded electric wire, an anvil unit as a pressure receiving means for receiving the crimp terminal at a predetermined crimping position, and an end of the shielded electric wire together with the anvil unit A crimper unit as a pressurizing means for crimping the crimp terminal on the part, the anvil unit has an anvil for signal line, and the crimper unit is inserted in the crimping tool insertion port together with the anvil for signal line. The signal line crimper has a signal line crimper for crimping a crimping piece of the signal line crimping part. The signal line anvil includes a terminal crimping anvil part and the terminal. A pair of claw clamp portions located on both sides of the wearing anvil portion, and a claw insertion groove between the terminal crimping anvil portion and the claw clamp portion, and the signal line crimper includes a pair of claw portions, A terminal crimping anvil insertion part capable of introducing the terminal crimping anvil part between the claws, and using the terminal crimping anvil part and the pair of claws, the crimping piece of the signal line crimping part is added. When the signal line is crimped by tightening, the terminal crimping anvil part is guided into the terminal crimping anvil insertion part, and the pair of claw parts are inserted into the claw insertion groove part, thereby The top surface portion of the terminal crimping anvil portion is in contact with the outer surface of the signal wire crimping portion when the signal wire crimping portion is crimped by the signal wire crimping portion, so that the signal line crimper Receive caulking load The pressure receiving surface portion is higher than the top surface portion of the claw clamp portion, and the pressure receiving surface portion is in a state where both side wall portions of the crimping tool insertion port portion are not in contact with the top surface portion of the claw clamp portion. In addition, the outer surface of the pair of claws is in contact with the outer surface of the nail insertion groove, and the inner surface of the pair of claws is connected to the signal line. In the state in which the signal line is crimped, the taper is tapered from the tip of the pair of claws to the pressure receiving surface, and the pressure receiving surface is higher than the top surface of the claw clamp. In addition, except for the front side portions of the pair of claws so that the signal line crimper does not interfere with the intermediate dielectric and shield of the shielded wire when the crimping piece of the signal line crimping portion is crimped. Specially made in the thick part Terminal crimping device.   The terminal crimping device according to claim 1, wherein the pair of claw portions in the thick portion is formed on an inclined surface portion.

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