JP2007048600A - Terminal crimping jig - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a terminal crimping jig capable of providing a stable attitude of mounting onto a crimping tool even when repeatedly mounted to and demounted from the crimping tool, and capable of preventing a deviation of the mounting position with respect to the crimping tool caused by an external force. <P>SOLUTION: A fixing section 28 that is integrally formed with a holding section 27 for holding a connector pin 13 and that is to be fixed to one of jaws 22, 23 of a pair of crimping pliers 21 is releasably coupled to the one of jaws 22, 23 through a bolt member 32 penetrating through the fixing section 28 and screwed to the one of jaws 22, 23. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a terminal crimping jig suitable for use in crimping a crimp terminal.

Conventionally, as a terminal crimping jig used when crimping a crimping terminal to an electric wire inserted therein, it is provided on each sandwiching surface of a sandwiching tool such as a pliers, and the crimping terminals are fitted together to be crimped. A terminal crimping jig having a pair of male and female jig pieces is known (for example, see Patent Document 1). Each jig piece is attached to each sandwiching surface of the pliers via a double-sided adhesive tape or a magnet. Thereby, attachment / detachment of each jig | tool piece to each clamping surface can be performed easily.
JP 2002-190366 (page 3-5, FIG. 3)

  However, since the crimp terminal is attached to each jig piece with double-sided tape, for example, when the pliers are used for purposes other than crimping of the crimp terminal, the double-sided tape is sandwiched between each jig piece when peeled off from each jig piece. It may remain partially on the surface. For this reason, when a double-sided tape is applied from above the tape remaining on each clamping surface to reattach each jig piece to the pliers, the double-sided tape is uneven, and the mounting posture of each jig piece on each clamping surface is stable. do not do.

  Further, when each jig piece is attached to each clamping surface via a magnet, when an external force is applied to each jig piece, for example, along each clamping surface, the attachment position of each jig piece to each clamping surface is caused by this external force. There is a risk of shifting from an appropriate position. For this reason, it becomes impossible to crimp the crimp terminal at its proper portion.

  Accordingly, an object of the present invention is to provide a terminal crimping that can stabilize the mounting posture of the crimping tool even when it is repeatedly attached to and detached from the crimping tool and can prevent displacement of the mounting position to the crimping tool due to external force. To provide a jig.

  In order to solve the above-described problems, the present invention provides a terminal for positioning the crimping terminal on a crimping tool having a pair of jaws sandwiching the crimping terminal so as to crimp the crimping terminal into which the electric wire is inserted. A crimping jig, which is disposed on one of the jaws, and is a recess for receiving the crimping terminal such that a crimping part to be crimped between the jaws of the crimping terminal is located between the jaws. A holding portion formed with a place, and a fixing portion provided on the holding portion and fixed to the one jaw portion, and the fixing portion penetrates the fixing portion to the one jaw portion. It is characterized in that it is releasably connected to the one jaw by a locked shaft member.

  According to said structure, the fixing | fixed part provided in the holding | maintenance part holding a crimp terminal and fixed to one jaw part of the tool for crimping penetrates this fixing | fixed part, and is latched by said one jaw part. Since the shaft member is releasably coupled to the one jaw portion, the locking portion of the one jaw portion is locked by releasing the shaft member from the one jaw portion. The coupling and its release can be easily performed.

  Further, since the fixing portion is coupled to the one jaw portion by locking the shaft member to the one jaw portion, when the coupling of the fixing portion to the jaw portion is released, It is possible to prevent a residue such as a tape from remaining on the one jaw. As a result, even when the coupling of the fixed portion to the one jaw portion and the release thereof are repeated, instability due to residual tape as in the past is caused in the mounting posture of the terminal crimping jig to the crimping tool. There is no.

  Further, since the fixed part is coupled to the one jaw part by the shaft member, when an external force acts on the fixed part in a direction to shift the mounting position of the fixed part to the one jaw part, the fixation by the external force is performed. Movement of the part is prevented.

  The shaft member can be formed of a bolt member, an insertion hole that allows the bolt member to be inserted is formed in the fixed portion, and a screwing hole that is screwed into the bolt can be formed in the one jaw portion. In this case, the bolt member inserted through the insertion hole of the fixing portion is screwed into the screwing hole of the one jaw portion, whereby the fixing portion can be more easily fixed to the one jaw portion. Further, since the fixing portion is fixed to the one jaw portion by the bolt member, the mounting strength of the fixing portion to the one jaw portion can be further increased.

  Height position adjusting means for adjusting the height position of the holding part from the one jaw part according to the position of the crimping part in the crimping terminal can be provided for the holding part. In this case, since the height position of the holding portion from the one jaw portion can be easily changed by the height adjusting means, each crimp terminal can be crimped even when crimping a plurality of crimp terminals having different crimp positions. The height position of the holding part from the one jaw part can be easily adjusted for each crimp terminal so that the crimp part is located between both jaw parts. There is no need to manufacture a new crimping jig. Thereby, the increase in the manufacturing cost by newly manufacturing a terminal crimping jig for every crimping terminal can be suppressed reliably.

  The height position adjusting means can be constituted by a spacer member disposed between the holding portion and the one jaw portion. In this case, by arranging a spacer member having a thickness according to the position of the crimping part of the crimping terminal between the holding part and the one jaw part, the height position of the holding part from the one jaw part is set. It can be changed more easily.

  An anti-rotation means for preventing the holding portion and the fixing portion from rotating about the shaft member by the rotation force when the holding portion and the fixing portion are subjected to a rotating force that rotates them around the shaft member. The spacer member can be provided. In this case, it is possible to reliably prevent the position of the crimping portion of the crimping terminal between the jaw portions of the crimping tool from deviating from an appropriate position by rotating the holding portion and the fixing portion around the shaft member. .

  Each jaw portion can be constituted by a jaw portion having a sandwiching surface for sandwiching the crimping portion of the crimp terminal, and the spacer member can be sandwiched between the holding portion of the one jaw portion from below the holding portion and below the fixing portion. It can be composed of a plate-like spacer member extending on the one jaw portion toward an edge located on the opposite side of the edge portion including the edge portion, and the edge portion To the end surface of the one jaw portion opposite to the sandwiching surface and the end surface of the holding portion or the fixing portion, and each engages with the end surface of the one jaw portion and the end surface of the fixing portion. The first engagement portion and the second engagement portion can be formed, and the first engagement portion and the second engagement portion can constitute a rotation preventing means. In this case, since each of the first and second engaging portions formed on each edge of the spacer member is engaged with the end surface of the one jaw portion and the end surface of the fixing portion, the holding portion and When the rotational force acts on the fixed portion, the rotational force acts as a rotational force for rotating the spacer member from the fixed portion to the second engaging portion, and this rotational force is applied to the first engaging portion by the first engaging portion. By being engaged with the end face of one jaw, it is received by the one jaw. As a result, the position of the crimping portion of the crimping terminal between the jaw portions of the crimping tool is more reliably prevented from being shifted from the proper position by the rotational force centered on the shaft member that has acted on the fixing portion and the holding portion. be able to.

  The holding portion can be formed of a material that can be easily cut. In this case, when it is necessary to reduce the height position of the holding portion from the one jaw portion according to the position of the crimping portion of the crimping terminal, the holding portion is cut to reduce the height dimension of the holding portion. Thus, the height position of the holding portion from the one jaw portion can be easily lowered.

  The crimp terminal can be composed of a crimp terminal having an insertion end portion into which an electric wire is inserted and having a crimp portion, and the crimp terminal is held in the recess so that the insertion end portion projects between both jaw portions. And an abutting portion for abutting the end opposite to the insertion end of the crimp terminal in a direction away from the one jaw portion in a state where the crimp terminal is received can be provided in the recess. In this case, when the crimp terminal is crimped to the electric wire, the end of the crimp terminal is abutted against the abutting portion of the recess, thereby preventing the crimp terminal from coming out of the recess. Thereby, the shift | offset | difference from the appropriate position of the crimping | compression-bonding part between both jaw parts by the crimping terminal slipping out from the inside of a recess can be prevented.

  The holding portion can be arranged to rise from the jaw portion on the one jaw portion, and extends along the rising direction of the holding portion on an end surface of the holding portion located on the sandwiching surface side of the one jaw portion. A recess can be formed so as to open to the lower surface of the holding portion. In this case, since the recess opens to the end surface located on the sandwiching surface side of the one jaw portion of the holding portion, the crimp terminal can be easily loaded into the recess.

  According to the present invention, it is possible to stably attach the fixing portion to the one jaw portion without causing instability in the attachment posture to the crimping tool using the residual tape as in the prior art. Further, even when an external force is applied to the fixing portion in a direction to shift the mounting position of the fixing portion to the one jaw portion, the mounting position of the fixing portion to the one jaw portion is prevented from shifting from an appropriate position. Therefore, the crimp terminal can be properly crimped at the crimped portion.

  The present invention will be described with reference to the illustrated embodiments.

  FIG. 1 shows an example in which the present invention is applied to a pair of connector pins 13 which are crimp terminals provided on an electric fusion joint 12 for connecting two pipe members 10 and 11 to a heating wire 14. Indicates.

  The electrofusion joint 12 includes a tubular joint body 15 formed of a synthetic resin material. The joint body 15 has insertion portions 15a into which end portions 10a and 11a of the pipe members 10 and 11 are inserted at both ends thereof. Inside the joint main body 15, the above-described heating wire 14 for fusing the joint main body 15 and the pipe members 10 and 11 is embedded. The heating wire 14 is made of a metal wire made of nickel chromium, for example, and is wound in a coil shape along the circumferential direction of the joint body 15. The connector pins 13 described above are provided at both ends 14a of the heating wire 14, respectively.

  As shown in FIG. 2, each connector pin 13 has a substantially cylindrical shape, and has an insertion end portion 16 into which the end portion 14 a of the heating wire 14 is inserted at one end portion, and at the other end portion, A connection end 17 is connected to a power source such as a battery (not shown) for supplying power to the heating wire 14. The insertion end 16 is formed with an insertion hole 18 that opens to the end surface 16 a and extends along the axis of the connector pin 13. On the peripheral surface 13 a of each connector pin 13, in the illustrated example, a flange portion 19 extending along the circumferential direction of each connector pin 13 between the connection end portion 17 and the insertion end portion 16 is provided around the circumference of each connector pin 13. Each connector pin 13 is formed so as to protrude from the surface 13a in the radial direction. Each insertion end 16 has a crimping portion 20 that is crimped to the heating wire 14 inserted therein.

  As shown in FIG. 1, the connector pins 13 are spaced apart from each other inside the peripheral wall 15b of the joint body 15, and the connection end 17 protrudes outward from the outer peripheral surface 15c of the peripheral wall 15b. Buried. In a state where each connector pin 13 is embedded in the peripheral wall 15b of the joint body 15, the flange portion 19 meshes with the peripheral wall 15b, so that the connector pins 13 are prevented from coming off from the peripheral wall 15b.

  When connecting the pipe members 10 and 11 to each other, as is well known in the art, the end portions 10a and 11a of the pipe members 10 and 11 are inserted into the insertion portions 15a of the joint body 15 respectively. The power source is connected to the connector pin 13 and power is supplied from the power source to the heating wire 14 so that the heating wire 14 generates heat. With the heat of the heating wire 14, the insertion portions 15 a of the joint body 15 and the end portions 10 a and 11 a of the pipe members 10 and 11 are melted, and the joint body 15 and both pipe members 10 and 11 are integrated. Thereafter, the joint body 15 and the melted portions of the pipe members 10 and 11 are solidified, respectively, so that the joint body 15 and the pipe members 10 and 11 are fused to each other. Connected to each other.

  A dedicated crimping tool is used to crimp the crimping portion 20 of the insertion end 16 to the end 14a of the heating wire 14 inserted into the insertion hole 18 of the insertion end 16 of each connector pin 13. .

  The crimping tool according to the present invention is composed of a conventionally well-known crimping pliers 21. As shown in FIG. 3, the crimping pliers 21 have a pair of plate-like jaws 22 and 23 for sandwiching each connector pin 13. The jaw portions 22 and 23 are arranged on the same plane, and sandwiching surfaces 22a and 23a for sandwiching the crimping portions 20 of the insertion end portions 16 of the connector pins 13 are formed on opposite end surfaces. Yes. Two notches 24 for receiving the connector pins 13 are formed on the inner edge 22 b including the sandwiching surface 22 a of one jaw 22. The notches are formed so as to be spaced apart from each other along the inner edge 22b of the one jaw 22 and to be opened at the sandwiching surface 22a. Further, the clamping surface 23a of the other jaw part 23 is fitted into each notch 24 formed in the one jaw part 22 with the clamping surfaces 22a, 23a of both jaw parts 22, 23 being in contact with each other. Two projecting portions 25 that can be joined are formed. The crimping pliers 21 fit the connector pins 13 received in the notches 24 by fitting the protrusions 25 of the other jaw 23 to the notches 24 of the one jaw 22. Clamp between 22 and 23.

  When the connector pin 13 is crimped by the crimping pliers 21, the terminal crimping jig 26 according to the present invention is used to position the connector pin 13 at an appropriate position in the notch 24 formed in the one jaw portion 22. Used.

  As shown in FIGS. 4 and 5, the terminal crimping jig 26 according to the present invention includes a holding portion 27 for holding the connector pin 13 and a fixing portion 28 fixed to the crimping pliers 21. In the illustrated example, the holding portion 27 and the fixing portion 28 are each formed of brass that can be easily cut. Brass is an alloy of copper and zinc as is well known.

  The holding part 27 has a substantially rectangular parallelepiped shape, and rises from the inner edge part on the inner edge part 22 b of the one jaw part 22 of the crimping pliers 21, and one of the two notch parts 24. (See FIG. 3). A recess 29 for receiving the connector pin 13 is formed in the end surface 27a of the holding portion 27 located on the sandwiching surface 22a side of the one jaw portion 22.

  In the illustrated example, the recess 29 is formed so as to extend along the longitudinal direction of the end surface 27 a of the holding portion 27 and have a substantially semicircular cross section, and the lower end 29 a is the lower surface of the holding portion 27. It is open at 27b. The length of the recess 29 in the extending direction is such that the insertion end 16 of the connector pin 13 extends from the lower surface 27 b of the holding portion 27 to the one jaw portion in a state where the holding portion 27 is disposed on the one jaw portion 22. 22 has a length for receiving the connection end 17 and the flange portion 19 of the connector pin 13 so that the one notch portion 24 of the connector 22 protrudes and the crimping portion 20 of the insertion end portion 16 is located between the jaw portions 22 and 23. Is set to The depth of the recess 29 is such that the crimping portion 20 of the insertion end portion 16 abuts the inner peripheral surface of the one notch portion 24 of the one jaw portion 22 in a state where the connector pin 13 is received. Is set to In a state where the connector pin 13 is received in the recess 29, the connection end 17 of the connector pin 13 is abutted against the closed upper end surface 29 b of the recess 29. That is, the abutting portion 30 for abutting the connection end portion 17 of the connector pin 13 in the direction away from the one jaw portion 22 is defined by the upper end surface 29 b of the recess 29.

  The fixing portion 28 extends from the lower portion of the holding portion 27 on the one jaw portion 22 along the jaw portion, and has a rectangular parallelepiped having an abutment surface 28b that can abut against the one jaw portion 22. I am doing. In the illustrated example, the fixing portion 28 is formed integrally with the holding portion 27, and the holding portion 27 and the fixing portion 28 constitute an L-shaped vertical section. The fixing portion 28 is formed with an insertion hole 31 that allows insertion of a shaft member for fixing the fixing portion to the one jaw portion 22. In the illustrated example, the shaft member includes a bolt member 32 having a head portion 32a and a threaded shaft portion 32b. The one jaw portion 22 is formed with a screwing hole 33 that can be screwed into the shaft portion 32 b of the bolt member 32 at a position corresponding to the insertion hole 31 of the fixing portion 28. The fixing portion 28 can be released to the one jaw portion 22 by screwing and tightening the shaft portion 32b of the bolt member 32 inserted through the insertion hole 31 into the screwing hole 33 of the one jaw portion 22. Combined. Thereby, the terminal crimping jig 26 is detachably fixed to the crimping pliers 21.

  Furthermore, in the terminal crimping jig 26 according to the present invention, when the connector pin 13 having a different position of the crimping portion 20 in the insertion end portion 16 of the connector pin 13 is crimped, the one jaw portion according to the position of the crimping portion 20. A height position adjusting means for adjusting the height position of the holding portion 27 from 22 is provided for the holding portion 27.

  As shown in FIG. 6, the height position adjusting means includes a spacer member 34 disposed between the terminal crimping jig 26 and the one jaw portion 22.

  In the illustrated example, the spacer member 34 has a plate shape, and extends from below the holding portion 27 to below the fixing portion 28 to an outer edge portion 22c located on the opposite side to the inner edge portion 22b of the one jaw portion 22. It extends on the one jaw portion 22 toward it. In the illustrated example, the spacer member 34 has a thickness dimension corresponding to the position of the crimping portion 20 at the insertion end 16 of the connector pin 13. The spacer member 34 is formed with a through hole 38 that allows insertion of the shaft portion 32 b of the bolt member 32. The spacer member 34 is clamped between the terminal crimping jig 26 and the one jaw portion 22 by fastening the bolt member 32 when the fixing portion 28 is fixed to the one jaw portion 22.

  In the illustrated example, when the rotational force that rotates the spacer member 34 around the shaft portion 32 b of the bolt member 32 acts on the holding portion 27 and the fixing portion 28, the holding portion 27 and the fixing portion 28 are caused by the rotational force. An anti-rotation means for preventing the rotation of the is provided.

  The rotation preventing means includes a first engaging portion 36 and a second engaging portion 37 formed on two adjacent edges 34 a and 34 b of the spacer member 34. The first and second engaging portions 36 and 37 extend from the respective edge portions 34 a and 34 b of the spacer member 34 along the end surface 22 d of the outer edge portion 22 c of the one jaw portion 22 and the end surface 28 a of the fixing portion 28. . Each of the first and second engaging portions 36 and 37 has the one jaw portion 22 in a state where the spacer member 34 is sandwiched between the holding portion 27 and the fixing portion 28 and the one jaw portion 22. It engages with the end surface 22d of the outer edge portion 22c and the end surface 28a of the fixing portion 28.

  When the connector pin 13 is crimped to the heating wire 14, first, the terminal crimping jig 26 is fixed to the one jaw portion 22 of the crimping pliers 21 with the fixing portion 28, and formed on the holding portion 27 of the terminal crimping jig 26. The connector pin 13 is loaded into the recess 29. In this state, as described above, the connector pin 13 is positioned so that the crimping portion 20 of the insertion end portion 16 is positioned in the one notch portion 24 of the one jaw portion 22.

  Next, the end portion 14a of the heating wire 14 is inserted into the insertion hole 18 of the insertion end portion 16 of the connector pin 13, and the protrusion 25 of the other jaw portion 23 is fitted into the one notch portion 24. The crimping portion 20 of the insertion end 16 is sandwiched. At this time, as described above, the crimping portion 20 of the insertion end portion 16 is in contact with the inner peripheral surface of the one notch portion 24, so that the pressing force received from the projection 25 of the other jaw portion 23 A pressing force can be reliably applied to the crimping portion 20 from the protrusion 25 of the other jaw portion 23 without the connector pin 13 being inclined. Due to this pressing force, the crimping portion 20 of the insertion end portion 16 bites into the end portion 14 a of the heating wire 14, so that the heating wire 14 is prevented from coming out of the insertion hole 18 of the insertion end portion 16. Thereby, the connector pin 13 is pressure-bonded to the heating wire 14.

  According to the present embodiment, as described above, the fixing portion 28 of the terminal crimping jig 26 passes through the fixing portion and is screwed into the one jaw portion 22 of the crimping pliers 21 by the bolt member 32. Since the one jaw portion 22 is releasably connected, the fixing of the fixing portion 28 to the one jaw portion 22 is achieved by locking and releasing the bolt member 32 to the one jaw portion 22. The coupling and its release can be easily performed.

  Further, since the fixing portion 28 is coupled to the one jaw portion 22 by screwing the bolt member 32 to the one jaw portion 22, the coupling of the fixing portion 28 to the jaw portion is released. In addition, it is possible to prevent a residue such as a conventional residual tape from remaining on the one jaw portion 22. Thereby, even when the fixing portion 28 is repeatedly coupled to and released from the one jaw portion 22, the mounting posture of the fixing portion 28 to the one jaw portion 22 is unstable due to the residual tape as in the prior art. Without this, the fixing portion 28 can be stably attached to the one jaw portion 22.

  Furthermore, since the fixing portion 28 is coupled to the one jaw portion 22 by the bolt member 32, even when an external force acts on the fixing portion 28 in the direction of shifting the attachment position to the one jaw portion 22, It is possible to prevent the attachment position of the fixing part 28 to the one jaw part 22 from deviating from an appropriate position. Thereby, the connector pin 13 can be properly crimped by the predetermined crimping portion 20.

  Further, as described above, the shaft portion 32b of the bolt member 32 inserted into the insertion hole 31 of the fixing portion 28 is screwed into the screwing hole 33 of the one jaw portion 22, so that the fixing portion 28 is moved to the one side. Can be more easily fixed to the jaw portion 22, and the attachment strength of the fixing portion 28 to the one jaw portion 22 can be further increased.

  Further, as described above, since the holding portion 27 and the fixing portion 28 are formed of a material that can be easily cut, the holding from the one jaw portion 22 according to the position of the crimping portion 20 of the connector pin 13. When it is necessary to reduce the height position of the portion 27, the holding portion 27 and the fixing portion 28 are cut to reduce the height dimension of the holding portion 27 and the fixing portion 28. The height position of the holding part 27 can be easily lowered.

  Further, as described above, the abutting portion 30 for abutting the connection end portion 17 of the connector pin 13 in the direction away from the one jaw portion 22 at the upper end surface 29 b of the recess 29 formed in the holding portion 27. Therefore, when the connector pin 13 is crimped to the heating wire 14, the connecting wire 17 is pushed into the insertion hole 18 by inserting the heating wire 14 inserted into the insertion hole 18. By abutting against the abutting portion 30, a compression force that compresses the connector pin 13 along the axis from the abutting portion and the heating wire 14 acts, so that the movement of the connector pin 13 along the axis is recessed. It is restrained in 29.

  Thereby, at the time of crimping, for example, the operator only needs to hold the crimping pliers 21 with one hand and the heating wire 14 with the other hand, and it is not necessary to hold the connector pin 13, thereby improving work efficiency. Can be achieved. Further, since the movement of the connector pin 13 along the axis thereof is restrained in the recess 29, the displacement of the loading position of the connector pin 13 into the recess 29 is prevented. It is possible to prevent the predetermined crimping portion 20 from being displaced from the proper crimping position between the jaw portions 22 and 23 due to the shift in the loading position of the connector pin 13 to the jaw.

  Further, as described above, since the recess 29 opens to the end surface 27a located on the side of the sandwiching surface 22a of the one jaw portion 22 of the holding portion 27, the connector pin 13 is easily loaded into the recess 29. be able to.

  Further, as described above, by arranging the spacer member 34 between the holding portion 27 and the one jaw portion 22, the height position of the holding portion 27 from the one jaw portion 22 can be easily adjusted. it can. Thus, even when a plurality of connector pins 13 having different positions of the crimping portions 20 at the insertion end portion 16 of the connector pins 13 are crimped, the crimping portions 20 of the connector pins 13 are positioned between the jaw portions 22 and 23. In addition, since the height position of the holding portion 27 from the one jaw portion 22 can be easily adjusted for each connector pin 13, a terminal crimping jig 26 is newly manufactured for each connector pin 13 having a different crimping portion 20. do not have to. Therefore, an increase in manufacturing cost due to newly manufacturing the terminal crimping jig 26 for each connector pin 13 can be reliably suppressed.

  Further, as described above, the first and second engaging portions 36 and 37 formed on the spacer member 34 are engaged with the end surface 22d of the one jaw portion 22 and the end surface 28a of the fixing portion 28, respectively. Therefore, when a rotational force about the shaft portion 32 b of the bolt member 32 acts on the holding portion 27 and the fixing portion 28, the rotational force is applied from the fixing portion 28 to the second engaging portion 37. This rotational force is received by the one jaw portion 22 when the first engaging portion 36 engages with the end surface 22d of the one jaw portion 22. The rotation preventing function of both the first and second engaging portions 36 and 37 can prevent the holding portion 27 and the fixing portion 28 from rotating due to the rotational force.

  Therefore, the position of the crimping portion 20 of the connector pin 13 between the jaw portions 22 and 23 of the crimping pliers 21 due to the rotational force acting on the fixing portion 28 and the holding portion 27 can be prevented more reliably. can do.

  In the present embodiment, the holding part 27 and the fixing part 28 are each made of brass. However, instead of this, the holding part 27 and the fixing part 28 are made of brass as long as they can be easily cut. It can be molded with other materials.

  Further, in the present embodiment, the example in which the shaft member for fixing the fixing portion 28 to the one jaw portion 22 is constituted by the bolt member 32 is used. As long as it is a shaft member that can be fixed to the jaw portion 22, for example, a fastening member other than the bolt member 32 such as a screw or a shaft member other than the fastening member can be used in the present invention.

  Further, in this embodiment, the abutment portion 30 for abutting the connection end portion 17 of the connector pin 13 in the direction away from the one jaw portion 22 is an upper end surface 29 b of the recess 29 formed in the holding portion 27. However, instead of this, the abutting portion 30 can be formed separately from the terminal crimping jig 26 and can be detachably mounted in the recess 29, for example. In this case, by changing the mounting position of the abutting portion 30 in the recess 29, even when a plurality of connector pins 13 with different positions of the crimping portion 20 at the insertion end portion 16 of the connector pin 13 are crimped, each connector The protruding amount of the insertion end portion 16 of the connector pin 13 from the inside of the recess 29 can be easily adjusted for each connector pin 13 so that the crimping portion 20 of the pin 13 is located between both jaw portions 22 and 23. .

  Further, in the present embodiment, the height adjusting means is shown as an example in which the spacer member 34 having a thickness dimension corresponding to the position of the crimping portion 20 in the insertion end portion 16 of the connector pin 13 is shown. Instead, the height adjusting means can be composed of a plurality of plate-like spacer members having different thickness dimensions. In this case, the spacer members are selectively overlapped according to a desired height position of the holding portion 27 from the one jaw portion 22, and are sandwiched between the terminal crimping jig 26 and the one jaw portion 22. Thus, the height position of the holding portion 27 from the one jaw portion 22 can be adjusted.

  In this embodiment, the present invention is applied to the pair of connector pins 13 provided on the electric fusion joint 12 for connecting the two pipe members 10 and 11 to the heating wire 14. Although shown, it can replace with this and this invention can be applied to crimping crimp terminals other than the connector pin 13 to an electric wire.

1 is a longitudinal sectional view schematically showing an electric fusion joint according to the present invention. 1 is a plan view schematically showing a connector pin according to the present invention. It is a top view which shows roughly the crimping pliers concerning this invention. 1 is a perspective view schematically showing a terminal crimping jig according to the present invention. It is a longitudinal cross-sectional view which shows a mode that a connector pin is crimped | bonded to a heating wire using the terminal crimping jig which concerns on this invention. It is a perspective view which shows schematically the spacer member which concerns on this invention.

Explanation of symbols

14 Electric wire (heating wire)
13 Crimp terminal (connector pin)
16 Insertion end 21 Crimping tool (crimping pliers)
22, 23 Jaw part 22a, 23a Clamping surface 26 Terminal crimping jig 27 Holding part 28 Fixing part 29 Recess 30 Abutting part 31 Insertion hole 32 Shaft member (bolt member)
33 Screw hole 34 Height position adjusting means (spacer member)
36, 37 Anti-rotation means (first engaging portion, second engaging portion)

Claims (9)

  A terminal crimping jig for positioning the crimping terminal on a crimping tool having a pair of jaws sandwiching the crimping terminal in order to crimp the crimping terminal into which the electric wire is inserted. A holding part formed with a recess for receiving the crimping terminal so that a crimping part to be crimped between the jaw parts of the crimping terminal is positioned between the jaw parts, and the holding part A fixed portion that is fixed to the one jaw portion, and the fixed portion passes through the fixed portion and is fixed to the one jaw portion by a shaft member. A terminal crimping jig characterized in that it is releasably coupled to the part.   The shaft member is a bolt member, and the fixing portion is formed with an insertion hole that allows the bolt member to be inserted, and the one jaw portion has a screwing hole that is screwed into the bolt member. The terminal crimping jig according to claim 1, wherein the terminal crimping jig is formed.   A height position adjusting means for adjusting the height position of the holding part from the one jaw part according to the position of the crimping part in the crimping terminal is provided for the holding part. The terminal crimping jig according to any one of claims 1 to 2.   4. The terminal crimping jig according to claim 3, wherein the height position adjusting means is a spacer member disposed between the holding portion and the one jaw portion.   When a rotational force is applied to the spacer member to rotate the holding member and the fixed portion around the shaft member, the holding portion and the fixed portion are centered on the shaft member by the rotational force. The terminal crimping jig according to claim 4, further comprising a rotation preventing means for preventing the rotation.   Each of the jaw portions has a sandwiching surface for sandwiching the crimping portion of the crimping terminal, and the spacer member passes the sandwiching surface of the one jaw portion from below the holding portion to below the fixing portion. It forms a plate shape that extends on the one jaw toward the edge located on the opposite side of the edge including the two adjacent edges of the spacer member from the respective edges, It extends along the end surface of one jaw portion opposite to the sandwiching surface and the end surface of the holding portion or the fixing portion, and engages with the end surface of the one jaw portion and the end surface of the fixing portion, respectively. The first engaging portion and the second engaging portion are formed, and the rotation preventing means is configured by the first engaging portion and the second engaging portion. The terminal crimping jig according to claim 5.   The terminal crimping jig according to claim 1, wherein the holding portion is formed of a material that can be easily cut.   The crimp terminal has an insertion end portion into which the electric wire is inserted and has the crimp portion, and the insertion end portion is held in the recess so as to protrude between the jaw portions. Is provided with an abutting part for abutting the end opposite to the insertion end of the crimp terminal in a direction away from the one jaw part in a state where the crimp terminal is received. The terminal crimping jig according to any one of claims 1 to 7.   Each of the jaw portions has a sandwiching surface for sandwiching the crimp portion of the crimp terminal, and the holding portion is arranged to rise from the jaw portion to the one jaw portion, and the recess is It is formed in the end surface located in the said clamping surface side of the said one jaw part of the said holding | maintenance part so that it may extend along the standup direction of the said holding | maintenance part, and it may open | release to the lower surface of the said holding | maintenance part. Item 9. A terminal crimping jig according to any one of Items 1 to 8.

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