CN110582901A - Terminal holder and terminal crimping device - Google Patents

Abstract

The purpose is to provide the following technology: an improvement in the positioning accuracy of the terminal can be achieved, and the terminal can be allowed to elongate in the longitudinal direction at the time of crimping. The terminal holding body positions and holds a terminal provided with a pressure-bonding section when the terminal is pressure-bonded to an electric wire. The terminal holding body is provided with: a holding portion capable of holding a portion of the terminal different from the crimping portion; a positioning portion that is provided so as to be capable of abutting against a distal end surface in the longitudinal direction of the terminal held by the holding portion and is movable so as to approach or separate from the holding portion; and a biasing portion that biases the positioning portion in a direction approaching the holding portion.

Description

Terminal holder and terminal crimping device

Technical Field

The present invention relates to a technique for holding a terminal when crimping the terminal.

background

End connection terminals for wires in a wire harness are known. Such a terminal is pressure-bonded to the electric wire using, for example, a terminal pressure-bonding device described in patent document 1 or patent document 2.

In the terminal crimping apparatus described in patent document 1, a terminal to be crimped is supplied in an interlocking form in which a plurality of terminals are connected to an interlocking tape (also referred to as a carrier or the like), and a separation operation of the terminal and the interlocking tape is performed together with the crimping operation. In this case, in the terminal crimping device described in patent document 1, the terminal feeding mechanism and the crimping mechanism are linked by one driving unit, so that the supply, crimping, and separation of the terminal can be fully automatically performed.

in contrast, the terminal crimping device described in patent document 2 is a manual crimping tool that manually performs the supply and crimping operations of the terminal. In this case, the terminals are manually supplied one by one.

Here, it is desirable that the positioning accuracy of the terminal and the electric wire is high when the terminal is crimped. In this case, in the terminal crimping device described in patent document 1, the accuracy of positioning the terminal can be improved on the side of the feeding mechanism. In contrast, in the case where the manual crimping tool described in patent document 2 is supplied to the terminal crimping device as a single terminal as a terminal to be crimped, in order to improve the positioning accuracy of the terminal and the electric wire, a part of the terminal may be held by the holding portion and crimped while the distal end surface of the terminal in the longitudinal direction is abutted against the positioning portion.

Documents of the prior art

Patent document

Patent document 1: japanese patent laid-open publication No. 2014-211958

patent document 2: japanese patent laid-open publication No. 2005-190829

Disclosure of Invention

problems to be solved by the invention

However, the terminal may be plastically deformed by pressing at the time of crimping and may be elongated in the longitudinal direction. In this case, when the pressure welding is performed in a state where the distal end surface of the terminal in the longitudinal direction is abutted against the positioning member, there is a possibility that the positioning member hinders the elongation, and the terminal is deformed into an undesired shape.

Accordingly, the present invention aims to provide the following techniques: it is possible to achieve an improvement in the positioning accuracy of the terminal and to allow the terminal to elongate in the longitudinal direction at the time of crimping.

Means for solving the problems

In order to solve the above problem, a terminal holding body according to claim 1 is a terminal holding body that positions and holds a terminal when crimping the terminal having a crimping section to an electric wire, the terminal holding body including: a holding portion capable of holding a portion of the terminal different from the crimping portion; a positioning portion that is provided so as to be capable of abutting against a distal end surface in the longitudinal direction of the terminal held by the holding portion and is movable so as to approach or separate from the holding portion; and a biasing portion that biases the positioning portion in a direction approaching the holding portion.

The terminal holding body according to claim 2 is the terminal holding body according to claim 1, wherein the holding portion is capable of individually holding a plurality of the terminals arranged in a direction intersecting with the longitudinal direction.

The terminal crimping device of claim 3 includes: the terminal holding body according to claim 1 or 2; and a die for clamping and crimping the terminal held by the terminal holding body to the electric wire.

A terminal pressure welding device according to claim 4 is the terminal pressure welding device according to claim 3, further comprising: an input unit into which an operator can input a force; and a conversion unit that converts a force input to the input unit into a force that relatively moves an upper die and a lower die of the die in a direction of approaching or separating from each other.

A terminal pressure welding device according to claim 5 is the terminal pressure welding device according to claim 4, wherein the input unit includes two rod-shaped handle units that are configured to be manually graspable by an operator and to be openable and closable, and the switching unit converts the opening and closing operation of the two rod-shaped handle units into relative movement of the upper mold and the lower mold in the approaching or separating direction.

A terminal crimping device according to claim 6 is the terminal crimping device according to claim 4 or 5, further comprising a support jig mounting portion to which a support jig for supporting the electric wire can be mounted, wherein the support jig is mounted such that an end portion of the electric wire supported by the support jig is positioned at a position corresponding to the die.

A terminal crimping device according to claim 7 is the terminal crimping device according to claim 3, further comprising a driving unit that moves the upper die and the lower die of the die so as to approach or separate from each other.

A terminal crimping device according to claim 8 is the terminal crimping device according to claim 7, further comprising a support jig mounting portion to which a support jig for supporting the electric wire can be mounted, wherein the support jig is mounted such that an end of the electric wire supported by the support jig is positioned at a position corresponding to the die.

A terminal crimping device according to claim 9 is the terminal crimping device according to claim 8, wherein the support jig mounting portion is provided to be slidable in the longitudinal direction with respect to the upper die.

Effects of the invention

According to the 1 st to 9 th aspects, by causing the portion of the terminal different from the crimping portion to be held by the holding portion and the positioning portion to abut against the tip end surface in the terminal in the longitudinal direction at the time of the terminal setting, the terminal can be positioned at the terminal holding body with high accuracy. Further, when the terminal is about to be elongated in the longitudinal direction and the distal end surface thereof presses the positioning portion at the time of crimping of the terminal, the positioning portion is separated from the holding portion against the urging force of the urging portion. Therefore, the terminal can be elongated in the longitudinal direction. This can improve the positioning accuracy of the terminal, and can allow the terminal to expand in the longitudinal direction during crimping.

In particular, according to the 2 nd aspect, when the crimping operation of the plurality of terminals is simultaneously performed by one crimping device, the plurality of terminals crimped simultaneously can be positioned and held.

In particular, according to the 4 th aspect, even in the case of the terminal crimping apparatus operated by human power, it is possible to improve the positioning accuracy of the terminal and to allow the terminal to be elongated in the longitudinal direction during crimping.

in particular, according to the 5 th aspect, even when the terminal crimping device is a so-called hand tool type that is operated by being held by hand, it is possible to improve the positioning accuracy of the terminal and to allow the terminal to be elongated in the longitudinal direction during crimping.

In particular, according to the 6 th aspect, the accuracy of positioning the electric wire can be improved.

In particular, according to the 7 th aspect, even in the case of the terminal crimping apparatus operated by the driving section, it is possible to improve the positioning accuracy of the terminal and to allow the terminal to be elongated in the longitudinal direction at the time of crimping.

In particular, according to the 8 th aspect, the accuracy of positioning the electric wire can be improved.

In particular, according to the 9 th aspect, when supplying the terminal to the terminal holding body, the supply operation is facilitated by performing the supply in a state where the support jig mounting portion is moved in the longitudinal direction with respect to the upper die.

Drawings

Fig. 1 shows an example of a terminal-equipped electric wire manufactured by a terminal crimping apparatus.

Fig. 2 is a front view showing the terminal crimping device of embodiment 1.

Fig. 3 is a side view showing the terminal crimping device of embodiment 1.

Fig. 4 is an enlarged front view showing the terminal crimping device of embodiment 1.

Fig. 5 is an exploded perspective view showing the terminal holding body of embodiment 1.

fig. 6 is a plan view showing the terminal holding body of embodiment 1.

Fig. 7 is a sectional view taken along line VII-VII of fig. 6.

Fig. 8 is an exploded perspective view showing the supporting jig.

Fig. 9 is an explanatory diagram showing a state in which the terminal crimping device is closed.

Fig. 10 is a cross-sectional view showing a state of the terminal holding body after crimping.

Fig. 11 is an explanatory view showing a state of the terminal holding body before crimping.

Fig. 12 is an explanatory view showing a state of the terminal holding body after crimping.

Fig. 13 is a side view showing the terminal crimping device of embodiment 2.

Fig. 14 is a plan view showing the terminal crimping device of embodiment 2.

Fig. 15 is an exploded perspective view showing the terminal holding body of embodiment 2.

Fig. 16 is an exploded perspective view showing the support jig.

Fig. 17 is an explanatory view showing a case where the supporting jig mounting portion is slidably moved.

Fig. 18 is an explanatory view showing a case where the supporting jig mounting portion is slidably moved.

Detailed Description

{ 1 st embodiment }

Hereinafter, a terminal holding body and a terminal crimping device provided with the terminal holding body according to embodiment 1 will be described.

< electric wire with terminal >

First, the terminal-equipped electric wire 1 manufactured by the terminal crimping apparatus will be described. Fig. 1 shows an example of a terminal-equipped electric wire 1 manufactured by a terminal crimping apparatus.

The terminal-equipped wire 1 includes a wire 3 and a terminal 7 crimped to an end of the wire 3. In the present embodiment, two wires 3 are twisted to form a twisted wire 2. In the present embodiment, an example in which the terminal-equipped wire 1 is provided with the jacket 6 covering the periphery of the stranded wire 2 will be described.

Each wire 3 includes a core wire 4 and an insulating coating 5 covering the periphery of the core wire 4. The core wire 4 is formed of a conductive material such as copper or aluminum. The core wire 4 may be formed of one wire rod or a plurality of wire rods. In the case where the core wire 4 is formed of a plurality of wires, the plurality of wires may or may not be twisted. The insulating coating layer 5 is formed by, for example, extrusion molding of an insulating material (for example, polyethylene, polyvinyl chloride, or the like) such as resin around the core wire 4.

The jacket 6 is also called a sheath or the like, and is formed by extrusion molding or the like of an insulating material such as resin (for example, polyethylene, polyvinyl chloride, or the like) around the two twisted electric wires 3.

The outer jacket 6 is peeled off or the like at the end of the electric wire 1 with terminal and does not exist. Therefore, the two electric wires 3 are exposed at the end of the electric wire 1 with terminal. The ends of the two exposed electric wires 3 are untwisted and then the insulating coating 5 is peeled off. Thereby, the end of the core wire 4 is exposed. A terminal 7 is connected to a region including the exposed end of the core wire 4.

The terminal 7 includes a pressure-bonding section 8 and a mating-side connecting section 9. The pressure-bonding section 8 includes a core wire pressure-bonding section 8a and a clad pressure-bonding section 8 b. Each of the crimping portions 8 includes a bottom portion and a crimping piece formed standing on the bottom portion. Each of the pressure-bonding sections 8 is pressed while being held by a die of the terminal pressure-bonding apparatus together with a portion of the electric wire 3 to be pressure-bonded (the core wire pressure-bonding section 8a and the core wire 4, the covering pressure-bonding section 8b and the insulating covering 5). Thereby, the crimping pieces are crimped so as to wind in a portion of the electric wire 3 to be crimped, and the terminal 7 and the electric wire 3 are connected. The mating-side connecting portion 9 may be formed in a male terminal shape or a female terminal shape, for example. Here, an example in which the mating-side connecting portion 9 is formed in a female terminal shape will be described. Therefore, the mating connection portion 9 has a box portion formed in a box shape. In addition, a contact portion is formed inside the box portion, and the contact portion is connectable to a mating terminal inserted into the box portion.

The stranded electric wire 2 obtained by the processing is incorporated into a wire harness mounted on a vehicle, and is used as a cable for high-speed communication conforming to the ethernet (registered trademark) standard, for example.

However, the electric wire 3 to be manufactured is not limited to the above. For example, it is also possible that one wire 3 exists alone. For example, in the case where a plurality of wires 3 are provided, the wires may not be twisted. Further, for example, it is also possible that the plurality of core wires 4 do not have a separate insulating coating 5, but the plurality of core wires 4 share a single insulating coating 5. Further, for example, the electric wire 3 may not have the sheath 6. The terminal 7 is not limited to the above-described terminal. For example, the clad pressure-bonding section 8b of the terminal 7 may be omitted and only the core wire pressure-bonding section 8a may be provided.

< terminal crimping device >

Next, a terminal crimping device for crimping the terminal 7 to the end of the wire 3 will be described. Fig. 2 is a front view showing the terminal crimping device 10 of embodiment 1. Fig. 3 is a side view showing the terminal crimping device 10 of embodiment 1. Fig. 4 is an enlarged front view showing the terminal crimping device 10 of embodiment 1.

The terminal crimping device 10 includes a terminal holding body 60 and a die. The present embodiment is an example in which the terminal crimping device 10 is a so-called hand crimping tool, and particularly an example of a so-called hand tool type in which an operator inputs a force involved in crimping by hand. Therefore, the terminal crimping device 10 further includes a hand tool body 20. The terminal holding body 60 and the die are incorporated as a part of the upper unit 40 and the lower unit 50 which are mounted on the hand tool body 20 in the terminal crimping device 10.

First, the hand tool body 20 will be described. The hand tool body 20 includes an input unit 22 and a conversion unit 30.

The operator can input force through the input unit 22. Here, the input unit 22 includes two bar-shaped handle portions 23 and 24 because the operator inputs force by hand. The two bar-shaped handle portions 23 and 24 are formed to be manually grasped by an operator. The two bar-shaped handle portions 23 and 24 are formed to be opened and closed by an operator's hand. Specifically, the respective bar-shaped handle portions 23 and 24 are formed in an elongated bar shape and are rotatably coupled at one end side by a rotating pin 26. The operator can relatively move the portion closer to or farther from the other end side than the portion connected by the pivot pin 26 while holding the portion. Hereinafter, the state in which the other end portions of the two rod-like handles 23 and 24 are separated from each other (the state shown in fig. 2) is referred to as an open state, and the state in which the other end portions are close to each other (the state shown in fig. 9) is referred to as a closed state. At this time, the operator can close the two rod-shaped handles 23 and 24 by inputting a force in a direction in which the other end portions of the two open rod-shaped handles 23 and 24 approach each other.

the conversion unit 30 converts the force input to the input unit 22 into a force for relatively moving the upper mold 42 and the lower mold 52 of the mold in the approaching or separating direction. In particular, the switching unit 30 switches the opening and closing operation of the two rod-shaped handle portions 23 and 24 to the relative movement of the upper mold 42 and the lower mold 52 in the approaching and separating direction. Specifically, the switching unit 30 includes an upper frame 32, a lower frame 34, and a link 36.

One end of the upper frame 32 is rotatably supported by one end of the bar handle 23 via a pivot pin 33. The upper frame 32 is formed shorter than the bar-shaped handle portion 23. An upper unit 40 is mounted on the other end side of the upper frame 32. The upper side unit 40 is provided with an upper die 42 in the mold. As shown in fig. 4, the distal end portion of the upper die 42 protrudes toward the lower frame 34 with respect to the upper frame 32.

One end of the lower frame 34 is rotatably supported by one end of the rod-like handle 24 via a pivot pin 35. The lower frame 34 is formed shorter than the rod-shaped handle portion 24. A lower side unit 50 is mounted on the other end side of the lower frame 34. The lower side unit 50 is provided with a lower mold 52 in the mold. The lower mold 52 has a distal end projecting toward the upper side frame 32 with respect to the lower side frame 34.

The link 36 is a portion connecting the upper frame 32 and the lower frame 34. The link 36 is rotatably supported at one end side by the upper frame 32 via a rotation pin 37. The link 36 is rotatably supported on the other end side by the lower frame 34 via a pivot pin 38. By providing the link 36, the upper frame 32 and the lower frame 34 change their postures so as not to change the interval between the portions connected by the link 36 when the bar-shaped handles 23 and 24 are opened and closed.

More specifically, here, the two pivot pins 33 and 35 (action points) that pivotally fix the upper frame 32 and the lower frame 34 are located on the tip end side of the position gripped by the operator, that is, the position to which the force is input (force point), with respect to the pivot pin 26 (fulcrum) that pivotally fixes the two rod-shaped handles 23 and 24. Therefore, when the two stick-shaped handle sections 23 and 24 are shifted from the open state to the closed state, the two pivot pins 33 and 35 that pivotally fix the upper frame 32 and the lower frame 34, respectively, are moved away from each other. At this time, the interval between the intermediate portions of the upper frame 32 and the lower frame 34 to which the links 36 are connected is not changed. Therefore, the other end portions of the upper frame 32 and the lower frame 34 approach each other, and the upper unit 40 including the upper mold 42 and the lower unit 50 including the lower mold 52 can move relatively in the direction of approaching each other (see fig. 9). When the two bar-shaped handle portions 23 and 24 are shifted from the closed state to the open state, on the contrary to the above, the upper unit 40 including the upper mold 42 and the lower unit 50 including the lower mold 52 can be moved relatively in the direction of separating by the upper frame 32 and the lower frame 34 having their one ends approaching each other and their other ends separating from each other.

The conversion unit 30 may further include a pawl portion not shown. The pawl portion defines the direction of movement of the rod-like handle portions 23, 24 by the operator as the direction from the open state toward the closed state. This prevents the closed state from being accidentally shifted to the open state during pressure welding, and thus can suppress pressure welding failure.

In this case, the switching unit 30 may further include a pawl releasing unit, not shown, for releasing the operation of the pawl unit. This enables the stick-shaped handles 23 and 24 to be switched from the closed state to the open state, which are restricted by the click portion. As such a click releasing portion, for example, in a state where the two rod-shaped handle portions 23 and 24 are in the closed state and the pressure-bonding operation is completed, the click releasing portion may be operated by an operator further applying a force in a direction in which the two rod-shaped handle portions 23 and 24 approach each other. This can prevent the click portion releasing portion from interfering with the pressure-bonding operation. In this case, in order to operate the pawl releasing portion in a state where the crimping operation is completed, it is preferable that a stopper portion 46 is provided, and the stopper portion 46 is configured so that the upper mold 42 and the lower mold 52 do not further approach each other even when an operator applies a force in a direction in which the two rod-shaped handle portions 23 and 24 approach each other. Such stopper 46 will be described later.

In this case, the switch 30 may further include a biasing portion, not shown, for biasing the two rod-like handles 23 and 24 to the open state. Thus, when the operation of the pawl portion is released by the pawl portion, the two rod-like handle portions 23 and 24 can be quickly returned to the open state.

However, the hand tool body 20 is not limited to the above configuration as long as it can convert the force input by the hand of the operator into a force in a direction in which the upper die 42 and the lower die 52 move to approach or separate from each other.

The upper unit 40 is provided to the upper frame 32. The upper unit 40 includes an upper die 42 and an upper die guide 44. Here, the top end of the upper frame 32 is bifurcated, and the upper die 42 and a part of the upper die guide 44 are sandwiched and supported between the bifurcated upper frames 32.

The upper die 42 constitutes a die for sandwiching the terminal 7 held by the terminal holding body 60 and crimping the terminal to the electric wire 3 together with a lower die 52 described later. The upper die 42 is formed with a terminal deforming portion 43, and the terminal deforming portion 43 deforms the terminal 7 when the upper die 42 and the lower die 52 sandwich the terminal 7 together. The upper die 42 includes an upper die 42a for core wire pressure-bonding section and an upper die 42b for clad pressure-bonding section. The upper mold is formed in a rectangular plate shape, and concave portions serving as terminal deforming portions 43 are formed at the lower ends in the longitudinal direction. The terminal deforming part 43 in the upper core crimp part 42a is formed in a shape corresponding to the core crimp part 8a, and the terminal deforming part 43 in the upper clad crimp part 42b is formed in a shape corresponding to the clad crimp part 8 b. The upper die 42 is fastened to the upper frame 32 or the like with screws through holes formed in the middle portion, and is supported by the upper frame 32. Therefore, the upper die 42 is detachable from and replaceable with respect to the upper frame 32. At this time, the upper die 42 is preferably supported by the upper frame 32 so as to be movable in the longitudinal direction with respect to the upper frame 32 while being adjustable in the pressing height. For example, the upper mold is movable in the longitudinal direction with respect to the upper frame 32 by forming the through-hole as a long hole or the like. The upper die 42 is moved in the longitudinal direction by, for example, an adjustment portion not shown.

The upper die guide 44 is fixed to the upper frame 32. The upper die guide 44 includes, for example, a middle portion overlapping the upper die 42 and both end portions 45 protruding to both sides of the middle portion. The intermediate portion is fixed to the upper frame 32 with the same screws as those used to fasten the upper die 42. The both end portions 45 are formed thick to hold the upper die 42 from both sides. This stabilizes the posture of the upper die 42. As shown in fig. 3, lower portions 45a of both end portions 45 are formed thicker than upper portions, and hook on the bifurcated upper frame 32. Thereby, the upper die guide 44 is positioned (rotation-stopped) with respect to the upper frame 32. Further, the adjusting portion is provided on the upper surface of the upper die guide portion 44.

As the adjusting portion, for example, an adjusting screw can be used. More specifically, the adjustment unit includes: a connecting plate portion connecting upper surfaces of both end portions 45 of the upper die 42; a screw passing through a through hole formed in the connecting plate portion; a nut that locks the screw; and a biasing portion that biases the upper die 42 upward (in a direction away from the lower die 52). The biasing portions are respectively provided between both side portions of the upper die 42 and both end portions 45 of the upper die guide 44. The tip of the screw extending from the through hole of the connecting plate portion abuts on the upper die 42, and the position of the upper die 42 with respect to the upper frame 32 can be adjusted by adjusting the length of the screw extending from the through hole.

The lower unit 50 is provided to the lower frame 34. The lower unit 50 includes a lower die 52, a terminal holding body 60, and a support jig mounting portion 80, and these are fixed to the lower frame 34. Here, the top end of the lower frame 34 is bifurcated, and a part of the lower die 52 is sandwiched between the bifurcated lower frames 34. The terminal holding body 60 projects outward from one of the bifurcated lower frames 34. The jig mounting portion projects outward from the other of the bifurcated lower frames 34.

The lower die 52 is disposed opposite to the upper die 42. The lower die 52 constitutes a die for clamping the terminal 7 held by the terminal holding body 60 and crimping it to the electric wire 3 together with the upper die 42. The lower mold 52 includes a core wire pressure-bonding section lower mold 52a and a clad pressure-bonding section lower mold 52 b. A base end portion 53 of the lower die 52 is formed in a square plate shape, and a terminal support portion 54 that supports the terminal 7 is formed in the lower die 52 so as to protrude upward (toward the upper die 42) from a widthwise intermediate portion of the base end portion 53. The terminal supporting part 54 in the lower core wire pressure-bonding part 52a is formed in a shape corresponding to the core wire pressure-bonding part 8a, and the terminal supporting part 54 in the lower cover pressure-bonding part 52b is formed in a shape corresponding to the cover pressure-bonding part 8 b. The base end portion 53 is fastened to the lower frame 34 or the like with screws, and the lower dies 52 are supported by the lower frame 34. Therefore, each lower die 52 is detachable from and replaceable with respect to the lower frame 34. Further, a protrusion 55 is formed so as to protrude upward (toward the upper die 42) from both widthwise end portions of the base end portion 53. As shown in fig. 3, the projection 55 is formed thicker than the base end portion 53 and hooked on the bifurcated lower frame 34. This allows the lower mold 52 to be positioned (locked) with respect to the lower frame 34.

As shown in fig. 3 and 4, stoppers 46 are projected from the lower surface of the lower portions of both end portions 45 of the upper die guide 44. Such stopper portions 46 can adjust the protruding dimension protruding from the lower portions of both end portions 45 of the upper die guide portion 44. As a structure capable of adjusting the projection dimension, for example, a structure may be adopted in which a screw to be screwed into a screw hole formed in a lower portion of each of the both end portions 45 of the upper die guide 44, a nut to be screwed into the screw, or the like is used. Such stopper 46 abuts on the upper surface of the projection 55 of the lower die 52 when the press-contact is completed, and suppresses the upper die 42 and the lower die 52 from further approaching. Thus, even when the pawl portion is released or a force is accidentally applied in a direction to bring the two rod-shaped handle portions 23 and 24 closer to each other after the completion of the pressure contact, the upper die 42 and the lower die 52 can be prevented from further approaching.

The terminal holding body 60 is arranged on the tip side of the terminal 7 supported by the lower mold 52 with respect to the lower mold 52. The terminal holding body 60 will be described in detail below with reference to fig. 5 to 7. Fig. 5 is an exploded perspective view showing the terminal holding body 60 of embodiment 1. Fig. 6 is a plan view showing the terminal holding body 60 of embodiment 1. Fig. 7 is a sectional view taken along line VII-VII of fig. 6.

The terminal holding body 60 positions the terminal 7 and holds the terminal 7 when crimping the terminal 7 provided with the crimping section 8 to the electric wire 3. Here, the terminal holding body 60 can position and hold the two terminals 7 in a state of being arranged in the lateral direction. Specifically, the terminal holding body 60 includes a base 62, a lid 64, a positioning portion 68, an urging portion 70, and a stopper portion 72.

The base 62 is fixed to the lower frame 34. The base 62 is fixed to the lower frame 34 by fastening the mounting portion 62a extending downward to the lower frame 34 or the like with screws, for example. The upper surface 62b of the base 62 on the opposite side of the mounting portion 62a is formed of a 1 st flat surface 62c having a square shape, a 2 nd flat surface 62d having a square shape and protruding outward from the 1 st flat surface 62c, and a guide surface 62e which is an end edge portion of the 1 st flat surface 62c and is formed by chamfering an end edge portion of the upper surface 62b of the base 62. A recess 63 is formed in the upper surface 62b of the base 62.

The concave portion 63 is formed so as to be concave in the normal direction of the 1 st flat surface 62c, for example. As the recess 63, a terminal accommodating recess 63a, a positioning portion accommodating recess 63b, and an urging portion accommodating recess 63c are formed therein. Here, the turning mechanism housing recess 63d is also formed as the recess 63.

The terminal receiving recess 63a is formed to be able to receive the counterpart connection portion 9 of the terminal 7. Specifically, the terminal receiving recess 63a is formed in a rectangular hole shape elongated in the 1 st direction along the direction in which the 1 st flat surface 62c and the 2 nd flat surface 62d are arranged. One end portion in the 1 st direction of the terminal receiving recess 63a is opened outward from the guide surface 62 e. Thus, the pressure-bonding section 8 can be extended outward through the opening in a state where the mating-side connecting section 9 is accommodated in the terminal accommodating recess 63 a. The 1 st direction other end of the terminal accommodating recess 63a communicates with the positioning portion accommodating recess 63 b. This allows the tip end of the terminal 7 accommodated in the terminal accommodating recess 63a to be disengaged from the positioning portion accommodating recess 63 b.

In the present embodiment, a plurality of (here, two) terminal receiving recesses 63a are formed. The two terminal receiving recesses 63a are formed in a row along a 2 nd direction intersecting the 1 st direction in the extending direction of the 1 st flat surface 62 c. The two terminal receiving recesses 63a can receive one mating-side connecting portion 9. The length of the terminal receiving recess 63a is set to, for example, a size equal to or smaller than the length of the mating connector 9 (here, a size slightly smaller than the length of the mating connector 9). The width of the terminal receiving recess 63a is set to be, for example, about the same as the width of the mating connector 9 (here, slightly larger than the width of the mating connector 9). The depth of the terminal receiving recess 63a is set to be, for example, approximately the same as the height of the mating connector 9 (here, slightly larger).

The positioning portion accommodating recess 63b is formed in the 1 st flat surface 62c so as to be able to accommodate the positioning portion 68. Here, the positioning portion accommodating recess 63b is formed in a square hole shape that is long in the 2 nd direction. The length dimension (dimension along the 2 nd direction) of the positioning portion accommodating recess 63b is set to be equal to or greater than the length dimension of the positioning portion 68 (here, a dimension slightly larger than the length dimension of the positioning portion 68). The width dimension (dimension along the 1 st direction) of the positioning portion accommodating recess 63b is set to a dimension larger than the width dimension of the positioning portion 68. Thereby, the positioning portion 68 can move in the width direction while being accommodated in the positioning portion accommodating recess 63 b. The positioning portion accommodating recess 63b communicates with the terminal accommodating recess 63a at a longitudinal intermediate portion. The positioning portion accommodating recess 63b communicates with the biasing portion accommodating recess 63c at a longitudinal intermediate portion on the opposite side of the terminal accommodating recess 63 a.

The biasing portion housing recess 63c is formed to be able to house the biasing portion 70. The biasing portion accommodating recess 63c is formed in a shape corresponding to the biasing portion 70. Here, since the compression coil spring is provided as the biasing portion 70, the biasing portion accommodating recess 63c is formed in a groove shape that is long in the 1 st direction.

The rotation mechanism housing recess 63d is formed to house a mechanism for rotating the retaining plate portion 73 in the retaining portion 72.

The cover 64 is formed in a rectangular plate shape. The cover 64 is fixed to the base 62 by, for example, screws not shown. The lid portion 64 covers the upper side of the terminal accommodating recess 63 a. Therefore, the periphery of the mating-side connecting portion 9 of the terminal 7 can be covered by the inner peripheral surface of the terminal receiving recess 63a and the lower surface of the lid portion 64. Here, the portion of the terminal 7 that covers the periphery of the mating-side connecting portion 9 from four sides is formed as a holding portion 66 that can hold a portion of the terminal 7 that is different from the pressure-bonding section 8. Here, since the terminal accommodating recess 63a is formed in plural (two in this case), the holding portion 66 can individually hold the plural (two in this case) terminals 7 aligned in the direction intersecting the longitudinal direction.

The positioning portion 68 is provided so as to be capable of abutting against the tip end surface in the longitudinal direction of the terminal 7 held by the holding portion 66. In addition, the positioning portion 68 is provided so as to be movable toward or away from the holding portion 66. Here, the positioning portion 68 is formed in a bar shape and is housed in the positioning portion housing recess 63 b. At this time, the positioning portion 68 is movable in the width direction thereof with respect to the positioning portion accommodating recess 63 b. Thereby, the positioning portion 68 can move so as to approach or separate from the holding portion 66.

The biasing portion 70 biases the positioning portion 68 in a direction approaching the holding portion 66. As described above, the biasing portion 70 will be described using a compression coil spring. However, as the biasing portion 70, another spring member such as a plate spring or a member formed of an elastic material such as rubber may be used. The biasing portion 70 is housed in the biasing portion housing recess 63 c. At this time, the biasing portion 70 is preferably in a natural state or a compressed state in a state where the positioning portion 68 is closest to the holding portion 66 (in this case, a state where the tip of the positioning portion 68 abuts against the side surface of the positioning portion accommodating recess 63 b).

The retaining portion 72 is a portion for retaining the terminal 7 held by the holding portion 66. The disengagement section includes a disengagement preventing plate 73 and an opening/closing operation section 75.

The retaining plate portion 73 is provided with a wide portion 73a and a narrow portion 73b connected to the wide portion 73 a. The wide portion 73a and the base end portion 73c of the narrow portion 73b are formed in a flat plate shape, and the tip end portion 73d of the narrow portion 73b is bent with respect to the base end portion 73 c. The retaining plate 73 is pivotally supported by the base 62 by a pivot pin 74. The retaining plate 73 is opened and closed by rotating relative to the base 62. Hereinafter, the state in which the separation preventing plate portion 73 can prevent the separation of the terminal 7 as shown by the solid line in fig. 7 is defined as the closed state, and the state in which the terminal 7 can be pulled out from the terminal accommodating recess 63a by being rotated from the closed state as shown by the broken line in fig. 7 is defined as the open state. In the closed position, the base end portions 73c of the wide portions 73a and the narrow portions 73b are parallel to the upper surface 62b of the base 62, and the tip end portions 73d of the narrow portions 73b close at least a part of the opening of the terminal accommodating recess 63 a. At this time, when the mating-side connecting portion 9 of the terminal 7 is received in the terminal receiving recess 63a, the distal end portion 73d of the narrow portion 73b can be hooked on the rear end portion of the mating-side connecting portion 9, and the terminal 7 can be prevented from coming off. In the open state, the base end portions 73c of the wide portions 73a and the narrow portions 73b are separated from the upper surface 62b of the base 62, and the state in which the opening of the terminal accommodating recess 63a is closed by the tip end portions 73d of the narrow portions 73b is released. The angle of rotation of the retaining plate portion 73 with respect to the base 62 from the closed position is not particularly limited as long as the state in which the opening of the terminal accommodating recess 63a is closed by the distal end portion 73d of the narrow portion 73b of the retaining plate portion 73 can be released.

The opening/closing operation unit 75 can open and close the stopper 72. Here, the opening/closing operation portion 75 includes an operation dial 76 and two gears 77 and 78. An operation dial 76 is provided on a side surface of the base 62. The two gears 77 and 78 are housed in the turning mechanism housing recess 63d in a mutually meshed state. The gear 77 is non-rotatably supported by a shaft connected to the operation dial 76, and the gear 78 is fixed to the retaining plate portion 73. The rotation pin 74 passes through a gear 78. When the operation dial 76 is rotated, the gear 77 is rotated. Thereby, the gear 78 meshing with the gear 77 rotates, and the retaining plate portion 73 to which the gear 78 is fixed rotates. Further, the opening/closing operation section 75 is preferably capable of maintaining the separation preventing plate section 73 in the open state. Further, the opening/closing operation section 75 is preferably capable of maintaining the retaining plate section 73 in the closed state.

The support jig mounting portion 80 is capable of mounting the support jig 90 that supports the electric wire 3, and the support jig 90 is mounted so that the end of the electric wire 3 supported by the support jig 90 is positioned at a position corresponding to the mold. The support jig mounting portion 80 is disposed on the opposite side of the terminal holding body 60 with respect to the lower die 52. Specifically, the supporting jig mounting portion 80 includes a platform 82 and a fitting portion 84.

The platform 82 is formed in a rectangular plate shape. A support jig 90 is placed on the upper surface of the platform 82. At this time, a recess 83 is formed on the upper surface of the platform 82. The concave portion 83 accommodates a convex portion 98 formed on the support jig 90. The convex portion 98 is received in the concave portion 83, whereby the support jig mounting portion 80 and the support jig 90 are positioned. A plurality of such concave portions 83 and convex portions 98 are preferably formed. This enables the rotation stop of the support jig mounting portion 80 and the support jig 90.

the fitting portions 84 are provided to protrude from both side portions of the base end of the platform 82. The fitting portion 84 overlaps the protrusion 55 of the lower die 52. The mounting portion 84 is screwed to the projection 55, and the support jig mounting portion 80 is fixed to the lower die 52 and thus to the lower frame 34. However, the supporting jig mounting portion 80 may be directly fixed to the lower frame.

Here, the supporting jig 90 attached to the supporting jig attaching portion 80 will be described with reference to fig. 8. Fig. 8 is an exploded perspective view showing the support jig 90.

The support jig 90 is a member that supports the electric wire 3 in advance when crimping the terminal to the electric wire 3. Here, the stranded electric wire 2 may be assumed as the electric wire 3, and the crimping manner as the terminal 7 may be assumed to crimp both terminals at the same time, so that the supporting jig 90 can position and hold the ends of both the electric wires 3 in the stranded electric wire 2. Specifically, the supporting jig 90 includes the 1 st member 91 and the 2 nd member 94.

The 1 st member 91 is a portion that separates the tips of the stranded wires 2. The 1 st member 91 includes: a rod-shaped portion 92 formed in an elongated rod shape; and a projecting piece 93 provided at a tip of one end side of the rod-shaped portion 92 so as to project in a direction intersecting with an extending direction of the rod-shaped portion 92. The protruding piece 93 is provided with two grooves 93a recessed from the distal edge toward the proximal end side. Thereby, the tip of the projecting piece 93a is formed in a comb shape having three teeth. Each groove 93a is formed so that a portion of the electric wire 3 where the insulating coating 5 is present can be inserted into each groove 93 a. Therefore, the ends of the two electric wires 3 are inserted into the respective groove portions 93a, and the two electric wires 3 are separated and held. That is, here, the portion of the protruding piece 93 where the two groove portions 93a are formed constitutes a partition portion. In this case, the width of the groove 93a is preferably set to a size that allows the wire 3 to be press-fitted. Thus, even when the support jig 90 is used with the groove 93a directed vertically downward, the state in which the wire 3 is held by the partition can be maintained more reliably.

The 2 nd member 94 is a portion that holds an intermediate portion (here, a portion having the jacket 6) of the stranded electric wire 2. The 2 nd member 94 is formed in an elongated rectangular parallelepiped shape. The 2 nd member 94 is formed to have a wide cross section along a plane orthogonal to the longitudinal direction. A 1 st groove 95 for accommodating the 1 st member 91 is formed in one main surface of the 2 nd member 94. The width dimension of the 1 st groove 95 is set to be about the same as the width dimension of the 1 st member 91. Further, a 2 nd groove 96 for receiving and holding the stranded wire 2 is formed in the other main surface of the 2 nd member 94, which is opposite to the one main surface. Here, the 1 st groove 95 and the 2 nd groove 96 are formed along the entire length of the 2 nd member 94, i.e., from one end side edge portion to the other end side edge portion of the 2 nd member 94. The width dimension of the 2 nd groove 96 is set to a dimension about the same as the width dimension of the region of the stranded electric wire 2 where the sheath 6 exists. The width of the 2 nd groove 96 is preferably set to a size that allows a portion of the stranded wire 2 where the jacket 6 is present to be press-fitted. Thus, even in a state where the 2 nd groove 96 is directed vertically downward, the stranded wire 2 is less likely to fall off from the 2 nd groove 96.

The 1 st member 91 and the 2 nd member 94 are united by the uniting mechanism portion. As such a combined mechanism portion, the screw holes 91a, 94a and the screws are assumed here. Screw holes 91a, 94a are formed in the 1 st member 91 and the 2 nd member 94, respectively. The screw hole 91a formed in the 1 st member 91 is formed in the base end portion of the bar-shaped portion 92 so as to penetrate through both side surfaces in the width direction. For example, two screw holes 91a are formed along the extending direction of the rod-like portion 92. The screw hole 94a formed in the 2 nd member 94 is formed to penetrate from the inner peripheral surface to the side surface of the 1 st groove 95 in the width direction. Two screw holes 94a are also formed along the extending direction of the 2 nd member 94. Then, the 1 st member 91 and the 2 nd member 94 are combined by screwing the screws to the screw holes 91a, 94a in a state where the 1 st member 91 is accommodated in the 1 st groove 95 and the positions of the two screw holes 91a, 94a are aligned. Further, when the screw is removed, the engagement between the 1 st member 91 and the 2 nd member 94 is released, and the removable state is achieved. In addition, the threaded hole 94a is formed as an elongated hole. This enables the positions of the 1 st and 2 nd members 91, 94 to be adjusted. However, the structure of the combining mechanism portion is not limited to the above structure. For example, the projection and the recess may be fitted, or a lock mechanism such as a latch described later may be used.

In addition, a projection 98 for positioning the support jig mounting portion 80 is formed on the 2 nd member 94. The convex portion 98 is formed to protrude from the other main surface of the 2 nd member 94. The convex portion 98 is formed at a position avoiding the 2 nd groove 96 along the width direction of the 2 nd member 94. The convex portion 98 is formed between the two threaded holes 94a along the length direction of the 2 nd member 94. For example, two projections 98 are formed at intervals in the width direction of the 2 nd member 94.

Preferably, the support jig mounting portion 80 and the support jig 90 can be maintained in a mounted state in which the convex portion 98 is fitted into the concave portion 83. As the mounting state maintaining portion for maintaining the mounting state of the support jig mounting portion 80 and the support jig 90, for example, a magnet can be used. In this case, for example, permanent magnets that attract each other may be fixed to both the top end of the convex portion 98 and the bottom portion of the concave portion 83. Further, the following structure may be adopted: the permanent magnet is fixed only to one of the tip of the convex portion 98 or the bottom of the concave portion 83, and the contact portion with the permanent magnet in the member on the other side is formed of a magnet such as stainless steel.

However, the mounting state maintaining portion for maintaining the mounting state of the support jig mounting portion 80 and the support jig 90 is not limited to the structure using the permanent magnet, and may be, for example, a structure in which the concave portion 83 and the convex portion 98 are press-fitted, or may be, for example, a structure using a latch described later.

< action >

Next, an example of a terminal crimping operation using the terminal crimping device 10 will be described.

First, the terminal 7 is set to the terminal holding body 60 fixed to the terminal crimping device 10. Specifically, the opening/closing operation unit 75 is operated to insert the two terminals 7 into the terminal accommodating recess 63a in a state where the retaining unit 72 is opened. While the tip end surface of the terminal 7 is abutted against the positioning portion 68, the retaining portion 72 is closed, and the tip end of the retaining portion 72 is hooked to the rear end of the mating-side connecting portion 9. Thereby, the terminal 7 is positioned with high accuracy and set in the terminal crimping apparatus 10. That is, when the terminal 7 is seated on the terminal holding body 60, the pressure-bonding section 8 of the terminal 7 extending from the mating-side connection section 9 held by the terminal holding body 60 is placed on the lower mold 52 or is positioned to slightly float upward with respect to the lower mold 52.

Next, the electric wire 3 is set to the terminal crimping device 10.

When the electric wire 3 is set to the terminal crimping device 10, the electric wire 3 is first set to the supporting jig 90. Specifically, in the supporting jig 90, the 1 st member 91 and the 2 nd member 94 are in an integrated state in advance. In this state, the two electric wires 3 exposed at the tip ends of the twisted electric wires 2 are inserted into the respective groove portions 93a of the 1 st member 91 after being twisted. In addition, the intermediate portion of the stranded wire 2 is inserted into the 2 nd groove 96 of the 2 nd member 94. Thereby, the installation of the electric wire 3 to the supporting jig 90 is completed.

After the installation of the electric wire 3 to the supporting jig 90 is completed, the supporting jig 90 in which the electric wire 3 is installed is then mounted to the terminal crimping device 10. Specifically, the convex portion 98 provided to protrude from the lower surface of the 2 nd member 94 of the support jig 90 is received in the concave portion 83 formed in the upper surface of the platform 82 of the support jig mounting portion 80. At this time, the supporting jig 90 and the supporting jig mounting portion 80 are fixed by the permanent magnet provided at least one of the tip of the convex portion 98 or the bottom of the concave portion 83 as described above. When the mounting of the supporting jig 90 having the electric wire 3 seated thereon to the terminal crimping device 10 is completed, the seating of the electric wire 3 to the terminal crimping device 10 is completed. Thus, the end of the electric wire 3 is placed on the bottom of the pressure-bonding section 8 or is located at a position slightly floating upward from the bottom in a range between the pressure-bonding pieces.

Therefore, when the placement of the terminal 7 and the electric wire 3 to the terminal crimping apparatus 10 is completed, the crimping section 8 of the terminal 7 is positioned between the upper die 42 and the lower die 52, and the electric wire 3 is positioned between the bottom of the crimping section 8 and the upper die 42. After the state is reached, the operator starts the crimping operation.

Specifically, as shown in fig. 9, the operator inputs a force in a direction to bring the two rod-shaped handle portions 23 and 24 closer to each other while gripping them. When the two bar-shaped handle portions 23 and 24 are brought close to each other by this force, as described above, the distal end portions of the upper frame 32 and the lower frame 34 are brought close to each other, and the upper unit 40 and the lower unit 50 are brought close to each other. Thereby, the upper die 42 and the lower die 52 approach each other, and the pressure-bonding section 8 and the electric wire 3 are sandwiched and pressed to be deformed into a shape corresponding to the shape of the deformed portion of the pressure-bonding section 8.

At the time of this deformation, when the terminal 7 is to be elongated in the longitudinal direction, the tip end face of the terminal 7 presses the positioning portion 68. The positioning portion 68 is moved away from the holding portion 66 as shown in fig. 10 against the biasing force by receiving the pressing force. This allows the terminal 7 to be elongated in the longitudinal direction.

Fig. 11 and 12 show the operation of positioning portion 68 before and after crimping in plan view. That is, in the state before crimping, as shown in fig. 11, the positioning portion 68 abuts on the distal end surface of the terminal 7 in a state of being close to the holding portion 66. When the terminal 7 is about to be elongated in the longitudinal direction in association with the press-fitting, the distal end surface of the terminal 7 presses the positioning portion 68. The positioning portion 68 is moved away from the holding portion 66 as shown in fig. 12 against the biasing force by receiving the pressing force. In addition, the amount of movement of the positioning portion 68 depends on the amount of extension of the terminal 7. Therefore, the difference between the width of the positioning portion accommodating recess 63b and the width of the positioning portion 68 is preferably set to a size equal to or larger than the expected maximum extension of the terminal 7. In fig. 12, the two terminals 7 are similarly elongated, but the elongation amounts of the two terminals 7 may be different. In this case, only the terminal 7 having a large elongation may press the positioning portion 68.

After the terminal crimping is completed, the terminal-equipped electric wire 1 is taken out. Specifically, the operator further inputs a force in a direction to bring the two rod-like handles 23 and 24 closer to each other while holding them. Thereby, the click portion is released, and the two bar-shaped handle portions 23 and 24 are moved to the open state. In this state, the retaining portion 72 of the terminal holding body 60 is opened, and the support jig 90 on which the terminal-equipped electric wire 1 is placed is detached from the support jig mounting portion 80. Then, the terminal-equipped electric wire 1 is removed from the support jig 90, whereby the terminal-equipped electric wire 1 shown in fig. 1 can be obtained.

According to the above-described aspect, when the terminal 7 is set, the portion of the terminal 7 different from the crimping portion 8 is held by the holding portion 66, and the positioning portion 68 is abutted against the tip end surface in the longitudinal direction in the terminal 7, so that the terminal 7 can be positioned at the terminal holding body 60 with high accuracy. When the terminal 7 is crimped, the positioning portion 68 is separated from the holding portion 66 against the biasing force of the biasing portion 70 when the terminal 7 is to be elongated in the longitudinal direction and the distal end surface thereof presses the positioning portion 68. Therefore, the terminal 7 can be elongated in the longitudinal direction. This can improve the positioning accuracy of the terminal 7, and can allow the terminal 7 to be elongated in the longitudinal direction during crimping.

In addition, when the crimping operation of the two terminals 7 is simultaneously performed by one terminal crimping device 10, the terminal holding body 60 can position and hold the two terminals 7 crimped simultaneously. In particular, when the crimping operation of the two terminals 7 is simultaneously performed by one terminal crimping apparatus 10 and the terminals 7 are supplied individually, the positioning in the longitudinal direction is effectively performed by abutting against the positioning portions 68. In this case, when the terminal 7 is to be extended when crimping the terminal 7, the terminal can be extended against the urging force of the urging portion 70.

In addition, even in the case where the terminal crimping apparatus 10 is of a type operated by a human power, particularly, a so-called hand tool type operated by a hand, it is possible to improve the positioning accuracy of the terminal 7 and to allow the terminal 7 to be elongated in the longitudinal direction at the time of crimping.

Further, by supporting the electric wire 3 in advance by the supporting jig 90, the positioning accuracy of the electric wire 3 along the longitudinal direction can be improved.

{ 2 nd embodiment }

Next, the terminal holding body 160 and the terminal crimping device 110 including the terminal holding body 160 according to embodiment 2 will be described. Fig. 13 is a side view showing the terminal crimping device 110 of embodiment 2. Fig. 14 is a plan view showing a terminal crimping device 110 of embodiment 2. In the description of the present embodiment, the same components as those described above are denoted by the same reference numerals, and the description thereof is omitted.

The present embodiment is an example in which the terminal crimping device 110 is of a type driven by a driving unit. Therefore, the terminal crimping device 110 includes a driving body 120 instead of the hand tool body 20.

The driving body 120 includes a frame 122 and a driving unit 130. The driving body 120 includes a platform 124 and a guide 126. In the terminal crimping device 110 of the present embodiment, the terminal holder 160 and the die are structural elements that are attached to the upper unit 140 and the lower unit 150 of the driving body 120.

The driving unit 130 relatively moves the upper mold 42 and the lower mold 52 of the mold in the approaching or separating direction. Here, the driving unit 130 includes a driving source 132 and a transmission mechanism. The driving source 132 is fixed to the frame 122. The drive source 132 is constituted by an actuator such as an air cylinder or a motor. The transmission mechanism transmits the driving force of the driving source 132 to the upper die 42, and reciprocates the upper die 42 relative to the lower die 52. The transmission mechanism includes a plunger member 134 connected to the upper unit 140, and a cam mechanism, not shown, interposed between the plunger member 134 and the drive source 132 to reciprocate the plunger member 134.

In the upper unit 140, the upper die 42 is also guided by an upper die guide (not shown) similar to the upper die guide 44. Further, a side surface of the adjustment shaft of the adjustment portion, which can adjust the position of the upper mold 42 with respect to the lower mold 52, abuts on the upper surface of the upper mold 42. The side surfaces of the adjustment shaft are formed, for example, in a spiral shape that gradually changes in diameter with respect to the center. Thus, the distance between the center of the adjustment shaft and the upper surface of the upper die 42 can be adjusted by rotating the adjustment shaft, and therefore the position of the upper die 42 relative to the lower die 52 can be adjusted.

The platform 124 is formed in a square plate shape and fixed to the frame 122. The platform 124 is located below the upper unit 140. The lower unit 150 is supported on the upper surface of the platform 124. In addition, the guide portion 126 is fixed to the upper surface of the stage 124.

The lower unit 150 includes a lower mold 152, a terminal holding body 160, and a support jig mounting portion 180. The support jig mounting portion 180 of the lower unit 150 is provided slidably in the longitudinal direction of the electric wire 3 with respect to the upper die 42. Here, the support jig mounting portion 180 is described as being integrally connected to the lower mold 152 and the terminal holding body 160. Therefore, the lower die 152, the terminal holding body 160, and the support jig mounting portion 180 are integrally slidable in the longitudinal direction of the electric wire 3 with respect to the upper die 42. However, the terminal holder 160 is not necessarily configured to be slidable in the longitudinal direction of the electric wire 3 with respect to the upper mold 42. Further, the lower die 152 is not necessarily configured to be slidable in the longitudinal direction of the electric wire 3 with respect to the upper die 42.

As shown in fig. 15, the main modification of the terminal holding body 160 is that the base 162 is formed in a substantially rectangular parallelepiped shape and is easily mounted on the stage 124. Further, a 3 rd flat surface 162e recessed from the 1 st flat surface 62c is formed on the upper surface 162b of the base 162 instead of the chamfered inclined guide surface 62 e.

As a main modification of the lower mold 152, a shape in which the protrusion 55 is omitted can be given.

The supporting jig mounting portion 180 is formed in a shape in which two rectangular solids 181a and 181b having different sizes are arranged, and the supporting jig 190 is supported on the upper surface of the large rectangular solid 181 a. Further, a lower die 52 is connected to the tip of the small rectangular parallelepiped 181 b. At this time, the convex portion 183 is provided to protrude from the upper surface of the large rectangular parallelepiped 181a, and the convex portion 183 is accommodated in the concave portion 198 formed in the supporting jig 190. The convex portions 183 and the concave portions 198 are used to position the support jig 190 and the support jig mounting portion 180, instead of the convex portions 98 and the concave portions 83. In the example shown in fig. 18, two convex portions 183 and two concave portions 198 are provided along the longitudinal direction of the electric wire 3. However, the two convex portions 183 and the concave portions 198 may be provided along the width direction of the electric wire 3. The support jig mounting portion 180 includes an operation portion 185 that is operated to be gripped by an operator when the support jig mounting portion 180 is moved. The operation portion 185 is formed in a U-bar shape, for example, and is provided to protrude from a side surface of the large rectangular parallelepiped 181 a.

At this time, the support jig 90 and the support jig mounting portion 80 are fixed by using magnets, but here, the support jig 190 and the support jig mounting portion 180 are fixed by the lock portion 186 and the lock receiving portion 199. One of the lock portion 186 and the lock receiving portion 199 is fixed to the support jig 90, and the other is fixed to the support jig mounting portion 80. For example, a lock mechanism such as a so-called snap lock may be used as the lock portion 186 and the lock receiving portion 199.

Fig. 16 is an exploded perspective view showing the support jig 190. The main modification of the support jig 190 attached to the support jig attachment portion 180 is that the 2 nd member 194 is formed longer than the 2 nd member 94. At this time, the 1 st groove 195 is different from the 1 st groove 195, and extends only to a position at the middle portion in the longitudinal direction of the 2 nd member 194. The 2 nd groove 96 is identical to the 2 nd groove 96, and extends over the entirety from one end to the other end of the 2 nd member 94. As described above, the 2 nd member 94 has the concave portion 198 formed instead of the convex portion 98. Although the recess 198 is formed in a through hole shape here, it may have a bottomed structure. Further, a lock receiving portion 199 is formed in the 2 nd member 94.

The guide portion 126 restricts the movement of the supporting jig mounting portion 180, and herein restricts the movement of the lower unit 150, which integrally moves including the supporting jig mounting portion 180. In particular, the guide portion 126 here restricts the moving direction of the lower unit 150 to one direction. The lower unit 150 is supported to be capable of reciprocating in this direction between the 1 st position and the 2 nd position. As shown in fig. 13 and 14, the 1 st position is a position where the lower mold 152 is located directly below the upper mold 42. The pressure bonding operation is performed with the lower unit 150 located at this position. As shown in fig. 17 and 18, the 2 nd position is a position where the lower die 152 is separated from the upper die 42. In a state where the lower unit 150 is located at this position, it is preferable to place the terminal 7 on the terminal holding body 160 and to place the support jig 190, on which the electric wire 3 is supported, on the support jig mounting portion 180. This can prevent the upper unit 140, particularly the upper die 42, from being obstructed when the terminals 7 are set and the supporting jig 190 for supporting the wires 3 is set. The guide portion 126 is formed in a U shape and fixed to the upper surface of the stage 124.

< action >

Next, an example of the crimping operation of the terminal 7 using the terminal crimping device 110 will be described.

First, as shown in fig. 17 and 18, the lower unit 150 is pulled out to the 2 nd position. In this state, the terminal 7 is set to the terminal holding body 160 fixed to the terminal crimping device 110. Specifically, the opening/closing operation unit 75 is operated to insert the two terminals 7 into the terminal accommodating recess 63a in a state where the retaining unit 72 is opened. While the tip end surface of the terminal 7 is abutted against the positioning portion 68, the retaining portion 72 is closed, and the tip end of the retaining portion 72 is hooked to the rear end of the mating-side connecting portion 9. Thereby, the terminal 7 is positioned with high accuracy and set in the terminal crimping device 110. That is, when the terminal 7 is seated on the terminal holding body 160, the pressure-bonding section 8 of the terminal 7 extending from the mating-side connection section 9 held by the terminal holding body 160 is placed on the lower mold 152 or is positioned to float slightly upward with respect to the lower mold 152.

Next, the electric wire 3 is set to the terminal crimping device 110.

When the electric wire 3 is set to the terminal crimping device 110, the electric wire 3 is first set to the supporting jig 190. Specifically, in the supporting jig 190, the 1 st member 91 and the 2 nd member 194 are in an integrated state in advance. In this state, the two electric wires 3 exposed at the tip ends of the twisted electric wires 2 are inserted into the respective groove portions 93a of the 1 st member 91 after being twisted. In addition, the middle portion of the stranded wire 2 is inserted into the 2 nd groove 196 of the 2 nd member 194. Thereby, the installation of the electric wire 3 to the supporting jig 190 is completed.

After the installation of the electric wire 3 to the supporting jig 190 is completed, the supporting jig 190 where the electric wire 3 is installed is then mounted to the terminal crimping device 110. Specifically, the convex portion 183 provided to protrude from the upper surface of the supporting jig mounting portion 180 is received in the concave portion 198 formed in the No. 2 member 194 of the supporting jig 190. Thus, the end of the electric wire 3 is placed on the bottom of the pressure-bonding section 8 or is located at a position slightly floating upward from the bottom in a range between the pressure-bonding pieces. In this state, the lock 186 provided in the support jig mounting portion 180 is locked to the lock receiving portion 199 provided in the 2 nd member 194. Thereby, the placement of the supporting jig 190 is completed.

After the terminal 7 is seated on the terminal holding body 160 and the supporting jig 190 having the electric wire 3 seated thereon is mounted on the supporting jig mounting part 180, the lower unit 150 is pressed into the 1 st position. Thereby, the placement of the terminal 7 and the wire 3 to the terminal crimping device 110 is completed. In this state, the pressure-bonding section 8 of the terminal 7 is positioned between the upper die 42 and the lower die 152, and the electric wire 3 is positioned between the bottom of the pressure-bonding section 8 and the upper die 42. After the state is reached, the operator drives the driving unit 130 to start the crimping operation.

Specifically, the operator activates the pressure start switch and the like to drive the driving unit 130. At this time, the driving unit 130 is configured to drive one reciprocation, i.e., one circulation amount. More specifically, for example, the plunger member 134 is stopped near the top dead center, and the pressure start switch is activated, so that it is lowered toward the bottom dead center by the driving force of the driving source 132. The upper die 42 abuts against the pressure-bonding section 8 of the terminal 7 in the middle of the plunger member 134 moving from the top dead center to the bottom dead center. As the travel of the plunger member 134 proceeds, the crimp portion 8 continues to be deformed. When the plunger member 134 reaches the bottom dead center, the upper die 42 and the lower die 152 press the pressure-bonding section 8 and the electric wire 3, and the pressure-bonding section 8 is deformed into a desired shape.

At the time of this deformation, when the terminal 7 is to be elongated in the longitudinal direction, the tip end face of the terminal 7 presses the positioning portion 68. The positioning portion 68 receives the pressing force and moves away from the holding portion 66 against the urging force. This allows the terminal 7 to be elongated in the longitudinal direction. The elongation of the terminal 7 is the same as that of the terminal crimping device 10.

The plunger member 134 having reached the bottom dead center moves toward the top dead center as it is. Then, the driving of the driving portion 130 is stopped in a state where the plunger member 134 has reached the top dead center.

After the driving of the driving unit 130 is stopped, the terminal-equipped wire 1 is taken out. Specifically, the operator draws out the lower side unit 150 to the 2 nd position. In this state, the support jig 190 on which the terminal-equipped electric wire 1 is placed is detached from the support jig mounting portion 180 while the coming-off preventing portion 72 of the terminal holding body 160 is opened. Then, the terminal-equipped electric wire 1 can be obtained by removing the terminal-equipped electric wire 1 from the support jig 190, as shown in fig. 1.

According to this embodiment, even in the case of the terminal crimping device 110 operated by the driving unit 130, it is possible to improve the positioning accuracy of the terminal 7 and to allow the terminal 7 to be elongated in the longitudinal direction during crimping.

Further, by supporting the electric wire 3 by the supporting jig 190 at the time of crimping, the positioning accuracy of the electric wire 3 can be improved.

Further, since the support jig mounting portion 180 is slidably movable, particularly the lower unit 150, when the terminal 7 is supplied to the terminal holder 160 by a human hand, the support jig mounting portion 180 is supplied in a state of being moved in the longitudinal direction with respect to the upper die 42, and the supply operation is facilitated.

{ modification example }

The case where the terminal holding bodies 60 and 160 hold two terminals 7 has been described above, but this is not a necessary configuration. For example, the terminal holders 60 and 160 may hold one terminal 7. In this case, the wire 3 to be crimped of the terminal 7 may be present alone or may be present integrally in a plurality of pieces as in the stranded wire 2 described above. When the terminal holders 60 and 160 hold one terminal 7 and the wires 3 to be crimped are integrally present in a plurality, it is needless to say that the terminals 7 are sequentially crimped one by one with respect to the plurality of wires 3. For example, the terminal holders 60 and 160 may hold three or more terminals 7.

Although the case where the holding portion 66 is configured to surround the periphery of the terminal 7 has been described above, this is not an essential configuration. For example, the holding portion may be a clamping portion capable of clamping the terminal 7. Even when the periphery of the terminal 7 is surrounded, the holding portion may be configured to be surrounded by three sides without the lid portion 64.

Note that, although the description has been made above of the case where one positioning portion 68 can abut on the tip ends of the plurality of terminals 7, this is not an essential configuration. For example, a plurality of positioning portions may be provided so as to be capable of abutting against the tip end of one terminal 7.

The configurations described in the embodiments and the modifications can be combined as appropriate as long as they do not contradict each other.

The present invention has been described in detail, but the above description is only illustrative in all aspects, and the present invention is not limited thereto. It is understood that numerous modifications, not illustrated, can be devised without departing from the scope of the invention.

description of the reference numerals

1 electric wire with terminal

2-stranded electric wire

3 electric wire

4 core wire

5 insulating coating layer

6 coat

7 terminal

8 crimping part

8a core wire crimping part

8b cladding crimping part

9 connecting part on the other side

10. 110 terminal crimping device

22 input unit

23. 24 bar handle

30 switching part

32 upper side frame

34 lower side frame

36 connecting rod

40. 140 upper side unit

42 upper die

43 terminal deformation part

50. 150 lower side unit

52. 152 lower die

60. 160 terminal holding body

62. 162 base body

63 recess

63a terminal receiving recess

63b positioning part accommodating recess

63c urging portion accommodating recess

64 cover part

66 holding part

68 positioning part

70 force application part

72 anti-slip part

73 anti-drop plate part

80. 180 support jig mounting part

90. 190 electric wire supporting jig

91 st member

94. 194 nd 2 member

95. 195 No. 1 groove

96. 196 No. 2 groove

Claims (9)

1. A terminal holding body which positions and holds a terminal when crimping the terminal provided with a crimping part to a wire, the terminal holding body comprising:

A holding portion capable of holding a portion of the terminal different from the crimping portion;

A positioning portion that is provided so as to be capable of abutting against a distal end surface in the longitudinal direction of the terminal held by the holding portion and is movable so as to approach or separate from the holding portion; and

And a biasing portion that biases the positioning portion in a direction approaching the holding portion.

2. The terminal holding body according to claim 1,

The holding portion can individually hold a plurality of the terminals aligned in a direction intersecting the longitudinal direction.

3. A terminal crimping device is provided with:

The terminal holder according to claim 1 or claim 2; and

A mold for clamping and crimping the terminal held by the terminal holding body to the electric wire.

4. The terminal crimping device according to claim 3, wherein the terminal crimping device further comprises:

An input unit into which an operator can input a force; and

And a conversion unit that converts the force input to the input unit into a force that relatively moves the upper mold and the lower mold of the mold in a direction of approaching or separating from each other.

5. The terminal crimping device as claimed in claim 4,

the input section includes two bar-shaped handle sections that are formed so as to be manually graspable by an operator and so as to be capable of opening and closing,

The conversion unit converts opening and closing operations of the two rod-shaped handle portions into relative movement of the upper mold and the lower mold in a direction of approaching or separating from each other.

6. A terminal crimping device according to claim 4 or claim 5,

the terminal crimping device further includes a support jig mounting portion to which a support jig for supporting the electric wire can be mounted, and the support jig is mounted such that an end of the electric wire supported by the support jig is positioned at a position corresponding to the mold.

7. A terminal crimping device as claimed in claim 3,

The terminal crimping device further includes a driving unit that moves the upper die and the lower die of the die so as to approach or separate from each other.

8. The terminal crimping device as claimed in claim 7,

The terminal crimping device further includes a support jig mounting portion to which a support jig for supporting the electric wire can be mounted, and the support jig is mounted such that an end of the electric wire supported by the support jig is positioned at a position corresponding to the mold.

9. The terminal crimping device as claimed in claim 8,

The support jig mounting portion is provided to be slidable in the longitudinal direction with respect to the upper die.