JP2010230505A - Connector for sheathed thermocouple and compensating lead wire - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a connector for a sheathed thermocouple and a compensation lead wire, enabling replacement of only the sheathed thermocouple. <P>SOLUTION: This connector has: an upper plate 2 and a lower plate 3 made of a resin and connected openably/closably through a pivot; and a fixing element 7 for sticking each contact surface of the upper plate and the lower plate. On the contact surface of the lower plate, a thermocouple groove for arranging the sheathed thermocouple 4 thereon, a partition part 3c for separating two thermocouple wires of the sheathed thermocouple, and a compensation lead wire groove 3e for arranging a compensation lead wire 6 thereon are connected together, and an electrode plate recessed part 3d for fixing two electrode plates is formed, and an electrode plate is fixed on the electrode plate recessed part, the compensation lead wire 6 is fixed on the compensation lead wire groove, and two core wires are connected to the electrode plate respectively. On the contact surface of the upper plate, a projection part 2e for pressing the compensation lead wire, and a projection 2d for pressing the thermocouple wires onto the electrode plate are provided, and the projection is constituted so as to press and fix the two thermocouple wires 4a separated by the partition onto the electrode plate. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  Sheath thermocouples are often used in harsh environments such as high-temperature atmospheres and corrosive atmospheres, and it is necessary to replace sheath thermocouples that have been damaged or have reached the end of their service life in such environments. On the other hand, the compensating lead wire is used for signal transmission of a sheathed thermocouple, and is not used in a harsh environment, and can usually be used for a long time. The present invention relates to a connector for connecting the sheath thermocouple and a compensating conductor.

  FIG. 6 shows a cross-sectional view of a sheathed thermocouple that is generally used conventionally. FIG. 6A is a cross-sectional view of the sheath thermocouple cut in the longitudinal direction, and FIG. It is II sectional drawing of 6 (a).

  The sheath thermocouple 20 accommodates a pair of thermocouple strands 20c in a metal sheath 20a with a powdered inorganic insulating material 20b made of magnesia, alumina or the like interposed therebetween, and has an end (the right end in FIG. 6). ) Is provided with a seal 20d made of resin or the like in order to prevent a decrease in insulation of the inorganic insulating material due to moisture intrusion.

  6 shows a non-grounded sheath thermocouple in which the tip of the thermocouple wire 20c (the left end in the figure) is not in contact with the tip of the sheath, the tip of the thermocouple wire 20c and the sheath There is also a grounding type sheathed thermocouple in which the tip is in contact.

  FIG. 7 shows a cross-sectional view of a conventional sleeve portion connecting a sheath thermocouple and a compensating lead wire.

  As shown in the figure, the connection between the sheath thermocouple 20 and the compensating conductor 21 is performed by attaching a cylindrical metal sleeve 22 to the portion 20e near the end of the sheath thermocouple 20 by welding or caulking, and connecting the intermediate portion 22a inside the sleeve. At this position, the thermocouple element 20c and the core wire 21a of the compensating conductor 21 are connected by brazing, caulking, or the like, and in order to fix them, an adhesive 23 such as a resin is provided in the gap in the metal sleeve 22. Is generally used (see Non-Patent Document 1, for example).

  In the figure, 21b is the outer covering of the compensating conductor 21, and 21c is the insulating covering of the core wire.

  Although not shown in the drawings, a spacer made of an insulator is provided in the metal sleeve 22 for preventing contact between the conductors (thermocouple wire 20c, core wire 21a of the compensating conductor) and preventing contact between the conductor and the sleeve 22. There is also.

  In addition, there is a material in which the filler in the gap is not a resin but an inorganic insulating material powder such as magnesia or alumina, or a material molded with a resin without using the metal sleeve 22 as shown in FIG. In the case of the resin mold 24, a spacer made of an insulating material may be provided in the same manner as in the case of the metal sleeve 22.

  In FIG. 8, the same components as those in FIG. 7 are denoted by the same reference numerals and description thereof is omitted. 7 and 8 show a cross section of only the metal sleeve and the resin mold portion, and the sheath thermocouple 20 and the compensating conductor 21 represent the outer shape.

“The correct way to use a new thermometer”, 2nd edition, authors, Japan Electrical Measurement Industry Association, publisher, Nihon Kogyo Publishing Co., Ltd., published on March 10, 2003, p. 62

  However, in the connection structure of the conventional sheathed thermocouple 20 and the compensating lead wire 21 described above, the sheathed thermocouple 20 and the compensating lead wire 21 cannot be detached, and the sheathed thermocouple 20 cannot be used due to damage or a lifetime. Both the sheath thermocouple 20 and the compensating lead 21 had to be replaced.

  The present invention has been made in consideration of the problems in the conventional connection structure of the sheathed thermocouple and the compensating lead wire as described above, and when it becomes necessary to replace the sheathed thermocouple due to breakage or life, the sheathed thermocouple It is intended to provide a sheathed thermocouple and compensating conductor connector that can only be replaced.

The present invention has an upper plate and a lower plate made of resin connected via a pivot so as to be openable and closable, and a fixture for bringing the contact surfaces of the closed upper plate and the lower plate into close contact with each other,
The contact surface of the lower plate is formed of a groove shallower than the outer diameter of the sheath thermocouple, and the thermocouple groove for arranging the sheath thermocouple is separated from the two thermocouple wires of the sheath thermocouple. A partition part and a compensation conductor groove in which a compensation conductor is arranged are connected,
Electrode plate recesses for fixing two electrode plates are formed on both sides of the partition,
The electrode plate is fixed to the concave portion of the electrode plate via an adhesive,
The compensation lead is fixed to the compensation lead groove via an adhesive,
The two core wires exposed at the tip of the compensation conductor are connected to the electrode plates, respectively.
Further, the contact surface of the upper plate is provided with a protrusion for pressing the compensation conductor arranged in the compensation conductor groove and a protrusion for pressing the thermocouple element against the electrode plate,
The protrusions rotate the upper plate around the pivot axis to contact the lower plate, and when the protrusions are brought into close contact with each other, the two thermocouple wires separated by the partition portion are respectively connected to the electrodes. A sheath thermocouple and compensating conductor connector configured to be pressed and fixed onto a plate.

  In the present invention, a protrusion for pressing and fixing the sheath thermocouple is further provided on the contact surface of the upper plate, and a concave groove is provided on the contact surface of the lower plate to engage with the protrusion. The protrusion and the concave groove can be arranged in a direction intersecting with the thermocouple groove.

  In the present invention, when metal flat crimp terminals are used as the electrode plates, the core wires of the compensating lead wires can be respectively connected to these flat crimp terminals by caulking.

  In the present invention, when the upper plate has a through hole at a position corresponding to the partition portion, the partition portion can be inserted into the through hole when the upper plate and the lower plate are closed. Can be configured.

  According to the present invention, when it is necessary to replace the sheath thermocouple due to breakage, life, etc., it is possible to replace only the sheath thermocouple, and there is no need to replace the compensating conductor. In addition, the sheath thermocouple can be easily attached and detached and can be performed in a short time.

  Further, according to the present invention, it is possible to provide an inexpensive connector having a simple structure.

It is a disassembled perspective view which shows the structure of the 1st Example which concerns on this invention. It is a perspective view which shows the state which closed the connector of FIG. It is a disassembled perspective view which shows the structure of the 2nd Example which concerns on this invention. It is a perspective view which shows the state which closed the connector of FIG. It is a perspective view which shows the flat type crimp terminal as a modification of the electrode plate which concerns on a 1st and 2nd Example. (a) is a longitudinal cross-sectional view of a conventional sheathed thermocouple, and (b) is a cross-sectional view taken along the line II of FIG. 6 (a). It is the front view which showed the connection structure by the metal sleeve of the conventional sheathed thermocouple and a compensation conducting wire in the partial cross section. It is the front view which showed the connection structure by the resin mold of the conventional sheath thermocouple and the compensation conducting wire in a partial cross section.

  Hereinafter, the present invention will be described in detail based on the embodiments shown in the drawings.

1 Basic structure of connector of sheathed thermocouple and compensating lead wire The connector according to the present invention includes a resin upper plate and a lower plate connected to each other through a pivot, and each contact between the closed upper plate and lower plate. It is composed of a clip or a fastening screw as a fixture for bringing the surface into close contact.

  On the contact surface of the lower plate, a thermocouple groove for positioning the sheath thermocouple, a columnar partition for separating the two thermocouple strands of the sheath thermocouple, and compensation for installing a compensating lead wire Conductor grooves are arranged in a row. Two electrode plate recesses for attaching two electrode plates are formed on both sides of the partition part for separating the thermocouple wires.

  The depth of the thermocouple groove is shallower than the outer diameter of the sheath thermocouple. Therefore, when the sheath thermocouple is fitted into the thermocouple groove, the upper surface portion of the sheath thermocouple (part of the outer peripheral surface) is the upper surface of the thermocouple groove. It comes to protrude more.

  In general, the above-mentioned compensating lead wire is made by bundling two insulation-coated core wires in which two core wires are each coated with an insulator such as vinyl or silicon rubber, and the outside is coated with vinyl or silicon. Have a structure.

  The compensation conductor is fitted into the compensation conductor groove of the lower plate, and the compensation conductor and the groove portion of the lower plate are bonded by an adhesive.

  The core wire is exposed at the tip of the compensation conductor, and a plate-like electrode plate made of a metal is attached to the tip of each of the two core wires by brazing or soldering. The electrode plate is bonded to the electrode plate recess of the lower plate using an adhesive.

  On the other hand, the contact surface of the upper plate is formed with a protrusion for fixing the compensating conductor and a protrusion for pressing the thermocouple element against the electrode plate.

1.1 Attaching and removing a sheathed thermocouple To attach a sheathed thermocouple, open the upper and lower plates, and on the lower plate, the two thermocouple wires at the tip of the sheathed thermocouple sandwich the partition. The sheath thermocouple is arranged in the thermocouple groove so as to be positioned on the upper surfaces of the two electrode plates.

  Subsequently, the upper plate is rotated around the pivot axis so that the upper plate and the lower plate are brought into contact with each other, and the upper plate and the lower plate which are in contact with each other are clipped by a clip such as a double clip, a slide-type clip or a Gachach (registered trademark) Alternatively, the upper plate and the lower plate are fixed in contact with each other by tightening with a tightening screw.

  To remove the sheath thermocouple, the sheath thermocouple can be removed by removing the clip or the fastening screw and rotating the upper plate or the lower plate around the pivot to open between the two plates.

  When the sheath thermocouple is attached using the connector having the above-described configuration, the sheath thermocouple may be pulled out because it is pressed and fixed by the upper plate with its upper surface portion protruding above the upper surface of the thermocouple groove. Absent.

  Since the compensating lead is also bonded to the compensating lead groove and pressed by the protrusion of the upper plate, it does not come off.

  Further, since the thermocouple wire of the sheath thermocouple is pressed against the electrode plate by the protrusion of the upper plate, the sheath thermocouple can be reliably brought into contact with the compensating lead wire, and in addition, the two thermocouple elements of the sheath thermocouple Since there is a partition for separating the wires, the two thermocouple wires are not tightened in contact with each other.

  Furthermore, since the electrode wire connected to the core wire from which the compensation conducting wire has been peeled is fixed to the recess of the electrode plate using an adhesive, there is no possibility of the two core wires coming into contact with each other.

  In addition, a protrusion is provided on the contact surface (sheath thermocouple side) of the upper plate for pressing and fixing the sheath thermocouple firmly, and a recess groove is provided on the contact surface of the lower plate to engage the protrusion. If the protrusion and the groove are provided in the direction intersecting the thermocouple groove, the groove intersecting portion where the groove and the thermocouple groove intersect forms the groove, and the thermocouple groove becomes shallower. As a result, the upper surface portion of the sheath thermocouple fitted in the thermocouple groove is exposed more at the groove intersection, and the protruding portion of the upper plate presses the exposed portion, resulting in the sheath thermocouple. The pair is more firmly fixed.

  A flat crimp terminal may be used as the electrode plate. In this case, the flat crimp terminal is attached to the core wire of the compensation lead wire by caulking, and is adhered to the electrode plate recess for attaching the electrode plate with an adhesive.

  If a flat crimp terminal is used in this way, the electrode plate is attached to the core wire by caulking. Therefore, the manufacturing process of the connector is easier than brazing or soldering the compensating lead wire to the electrode plate. There is.

  Furthermore, if the upper plate is provided with a through hole through which the partition for separating the thermocouple strands penetrates, the height of the partition can be increased, thereby more reliably securing the two thermocouple strands. Can be separated.

2 First Embodiment FIGS. 1 and 2 show a first embodiment of the present invention.

  FIG. 1 is a perspective view showing a configuration related to a sheath thermocouple and a compensating conductor connector (hereinafter abbreviated as “connector”), in which both plates are disassembled so that the configurations of the upper plate 2 and the lower plate 3 can be easily understood. (The state in which the pivot 2a is not inserted into the pivot insertion hole 3a).

  FIG. 2 is a perspective view showing a configuration in which the upper plate 2 and the lower plate 3 are closed and put into use.

2.1 Connector Configuration As shown in FIG. 1, a pivot insertion hole 3a is formed at the base end of the lower plate 3, and a thermocouple groove 3b for positioning the sheath thermocouple 4 is formed at the distal end. Has a columnar partition (column body) 3c that separates two thermocouple wires of the sheath thermocouple 4, and electrode plates 5 are bonded to both sides of the partition 3c (in the width direction of the lower plate 3). A pair of electrode plate recesses 3d is formed.

  A pair of metal electrode plates 5 is attached to the electrode plate recess 3d with an adhesive, and a compensation lead for disposing the compensation lead 6 on the compensation lead connecting side of the lower plate 3 is provided. A groove 3e is formed.

  The upper plate 2 is formed with two protrusions 2b for pressing the sheath thermocouple 4 in a linear shape, and the lower plate 3 is formed with two concave grooves 3f that engage with the protrusions 2b. Has been.

  The compensating conductor 6 is disposed in the compensating conductor groove 3e, and the outer covering 6a of the compensating conductor 6 and the compensating conductor groove 3e are fixed with an adhesive. The two core wires 6b at the tips of the compensation conductors 6 are stripped, and each core wire 6b is soldered to the upper surface corner of the electrode plate 5 (corner on the compensation conductor). Reference numeral 6c denotes an insulation coating for the core wire.

  A pivot 2a protrudes from the side surface of the base end portion of the upper plate 2 in the opposite direction, and a through hole 2c is formed in the upper plate 2 corresponding to the partition portion 3c to penetrate the partition portion 3c. Has been.

  Protrusions 2d for pressing the thermocouple wires 4a against the electrode plate 5 are formed on both sides of the through hole 2c (in the width direction of the upper plate). Further, a protrusion 2 e for pressing the compensating lead wire 6 is formed near the base end of the upper plate 2.

2.2 Connection of Sheath Thermocouple When connecting the sheath thermocouple 4 to the connector 1, first, the pivot 2 a of the upper plate 2 is inserted into the pivot insertion hole 3 a of the lower plate 3.

  Next, the sheath thermocouple 4 is fitted into the thermocouple groove 3b, and the two thermocouple wires 4a at the tip are arranged so as to be positioned on the upper surfaces of the two electrode plates 5 with the partition portion 3c interposed therebetween. In this state, the upper plate 2 is rotated around the pivot 2a, the upper plate 2 and the lower plate 3 are closed, and then a clip 7 as a fixture is pushed in the direction of arrow A. As shown in FIG. The lower plate 3 is sandwiched and fixed.

  When the sheath thermocouple 4 is replaced, the clip 7 is pulled out in the direction opposite to the arrow A direction, the upper plate 2 is rotated around the pivot 2a to open the upper plate 2 and the lower plate 3, and the sheath thermocouple 4 is moved. Remove. Since the sheath thermocouple 4 is not fixed to any part of the connector 1 by adhesion, welding or the like, it can be easily removed.

  In the first embodiment, the upper plate 2 and the lower plate 3 are formed of polycarbonate resin. However, as long as the connector 1 has the required strength, not only polycarbonate resin but also any other resin is used. be able to.

  Moreover, although the clip 7 as a fixture is comprised with the slide-type clip which consists of spring steel, you may use other types of clips, such as a double clip and a gachu.

2.3 Features of the Connector of the First Embodiment Since the depth of the thermocouple groove 3b in the connector 1 is shallower than the outer diameter of the sheath thermocouple 4, when the sheath thermocouple 4 is fitted into the thermocouple groove 3b, the sheath thermocouple 4 Since the upper surface portion protrudes from the upper surface of the thermocouple groove 3b, when the upper plate 2 is closed and fastened with the clip 7, the sheath thermocouple 4 is pressed against the lower plate 3 by the flat contact surface 2f of the upper plate 2. The sheath thermocouple 4 is prevented from coming off.

  Further, in the first embodiment, the upper plate 2 is provided with two protrusions 2b for pressing the sheath thermocouple 4 and the lower plate 3 is provided with two concave grooves 3f that engage with the protrusions 2b. The sheath thermocouple 4 can be securely fixed.

  Since the depth of the thermocouple groove 3b becomes shallower by the depth of the groove 3f, the upper surface of the sheath thermocouple 4 is more exposed at the intersection of the groove 3f and the thermocouple groove 3b. Therefore, the protruding portion 2b of the upper plate 2 presses the exposed upper surface portion, so that the sheath thermocouple 4 is firmly fixed to the connector 1.

  Note that the two thermocouple wires 4a of the sheath thermocouple 4 are separated from each other by the partition portion 3c and do not contact each other.

  Further, the length of the protrusion 2d (the longitudinal direction of the upper plate 2) that presses the thermocouple element 4a against the electrode plate 5 is the same as the core wire 6b of the compensating lead wire 6 and the electrode plate 5 located at the corner of the compensating lead wire side of the electrode plate 5. The electrode plate 5 is formed shorter than the length so as to avoid the solder bonding portion. Therefore, the protrusion 2d can press the flat portion of the electrode plate 5, and the thermocouple wire 4a is reliably pressed against the electrode plate 5 by the protrusion 2d, so that the electrode plate 5 and the thermocouple wire 4a are pressed. There is no contact failure between the two.

  On the other hand, the compensation conductor 6 is fixed to the compensation conductor groove 3e with an adhesive and is pressed by the protrusion 2e formed near the base end portion of the upper plate 2, so that it does not come off. Further, the core wire 6b from which the compensation lead wire 6 is peeled is soldered to the electrode plate 5, and the electrode plate 5 is fixed to the electrode plate recess 3d formed in the lower plate 3 with an adhesive. There is no possibility that the core wire 6b contacts.

  The frame width a on the clip mounting side of the lower plate 3 is such that when a commercially available slide-type clip 7 having a predetermined size is mounted as shown in FIG. Specifically, the length is determined so as to be positioned on the thermocouple groove 3b, the electrode plate 5, and the compensation conductor groove 3e.

  That is, since the clip 7 has the largest clamping force, the highest clamping force can be obtained for fixing the sheath thermocouple 4 and the compensating lead wire 6 and contacting the thermocouple element 4a and the electrode plate 5. This can be done reliably at the tip of the clip 7 to be manufactured.

  As described above, the upper plate 2 presses the compensating conductor 6 with the protrusion 2e, presses the thermocouple element 4a against the electrode 5 with the protrusion 2d, and holds the sheath thermocouple 4 with the flat contact surface 2f of the upper plate 2. In addition, the sheath thermocouple 4 can be pressed by the protrusion 2b.

  Among these, the compensating conductor 6 has elasticity in its insulating coatings 6a and 6c, and therefore does not affect other pressing forces. Further, since the upper plate 2 and the lower plate 3 are made of resin and have flexibility, the protrusion 2d, the flat contact surface 2f, and the protrusion 2d and the protrusion 2b are set to an appropriate height. The pressing force of the protrusion 2b interacts with each other, and the pressing force is not insufficient at a specific part.

  In the first embodiment, the attachment of the sheath thermocouple 4 to the connector 1 can be easily performed by simple operations such as the placement of the sheath thermocouple 4 to the lower plate 3, the rotation of the upper plate 2, and the attachment of the clip 7. it can. Further, when the sheath thermocouple 4 is removed, it can be easily performed by removing the clip 7 and rotating and opening the upper plate 2.

3. Second Embodiment FIGS. 3 and 4 show a second embodiment of the present invention.

  FIG. 3 is a perspective view showing the configuration of another connector 10 in a state where both plates are disassembled so that the configuration of the upper plate 11 and the lower plate 12 can be easily understood (the pivot 2a is inserted into the pivot insertion hole 3a). Not shown). 3, the same components as those in FIG. 1 are denoted by the same reference numerals, and the description thereof is omitted.

  FIG. 4 is a perspective view showing a configuration in which the upper plate 11 and the lower plate 12 are closed and put into use.

3.1 Configuration of Another Connector The connector of the second embodiment is slightly different from the first embodiment, and functionally, the upper plate 11 and the lower plate 12 are not clamped but fixed. It is different in that it is performed with two screws 13 and nuts 14 as tools.

  Hereinafter, the differences will be described in detail.

  The lower plate 12 is formed with projecting portions 12a and 12b in the width direction, and the projecting portions 12a and 12b are respectively provided with through holes 12c in the vertical direction.

  A hexagonal recess (not shown) for accommodating the hexagon nut 14 is formed at the edge of the through hole 12c on the bottom surface of the protrusions 12a and 12b.

  Adhesive is applied to the hexagonal recess and the hexagonal nut 14 is fitted, whereby the hexagonal nut 14 is fixed to the lower plate 12 without rotating.

  On the other hand, the upper plate 11 is formed with projecting portions 11a and 11b at positions facing the projecting portions 12a and 12b, and the projecting portions 11a and 11b are respectively formed with through holes 11c communicating with the through holes 12c. .

3.2 Connection of Sheath Thermocouple When connecting a sheath thermocouple to the connector 10 of the second embodiment, first, the pivot 2a of the upper plate 11 is inserted into the pivot insertion hole 3a of the lower plate 12.

  Next, the sheath thermocouple 4 is fitted into the thermocouple groove 3b, and the two thermocouple wires 4a at the tip are arranged so as to be positioned on the upper surfaces of the two electrode plates 5 with the partition portion 3c interposed therebetween.

  In this state, the upper plate 11 is rotated around the pivot 2a, the upper plate 11 and the lower plate 12 are closed, and then the screws 13 are inserted into the through holes 11c → 12c and screwed into the hexagon nuts 14 to obtain FIG. The upper plate 11 and the lower plate 12 are fastened and fixed as shown in FIG.

  When replacing the sheath thermocouple 4, the screw 13 is removed, the upper plate 11 is rotated around the pivot 2 a to open the upper plate 11 and the lower plate 12, and the sheath thermocouple 4 is removed. Since the sheath thermocouple 4 is not fixed to any part of the connector 1 by adhesion, welding or the like, it can be easily removed.

3.3 Features of other connectors The features of the connector according to the second embodiment, which is different from the first embodiment, are as follows.

  Since the screws 13 are used instead of the clips 7, it is not necessary to match the frame width a shown in FIG.

  The sheath thermocouple 4 is attached to the connector 10 by placing the sheath thermocouple 4 in the thermocouple groove 3 b, rotating the upper plate 11, and tightening with the screws 13.

  Compared with the first embodiment, the screw 13 needs a little time for tightening, but the sheath thermocouple 4 can be easily connected by a simple operation. Further, when the sheath thermocouple 4 is removed, it can be easily performed by removing the screw 13 and rotating and opening the upper plate 11.

  Although two embodiments have been described above, a metal flat crimp terminal 15 shown in FIG. 5 can be used instead of the electrode plate 5.

  The flat crimp terminal 15 may be attached to the core wire 6b of the compensating lead wire by caulking and adhered to the electrode plate recess 3d using an adhesive.

  If the flat crimping terminal 15 is used, the core wire 6b is attached to the electrode plate by caulking, and therefore, the manufacturing operation is simplified as compared with the case where the core wire 6b is brazed or soldered to the electrode plate 5.

  Moreover, in the said Example, although the partition part 3c which isolate | separates the thermocouple strand 4a of the sheath thermocouple 4 was made into the column shape, it is easy to position the front-end | tip part of the thermocouple strand 4a on the electrode plate 5. For the purpose, the cross section (as viewed from the plane) of the partition portion 3c may have a wedge shape. Specifically, the cross section may have a triangular shape and one apex faces the sheath thermocouple 4 side.

  As shown in the first and second embodiments, since the connector of the present invention has a simple structure, it is not expensive as compared with the conventional connector structure of a sheath thermocouple and a compensating conductor, and in addition, the sheath There is an advantage that the thermocouple can be detached.

  The present invention is suitable for a connector for connecting a sheath thermocouple and a compensating lead wire, but it can also be used as a detachable connector for a microheater and a power cable, and can also be used as a detachable connector for cables. be able to.

DESCRIPTION OF SYMBOLS 1 Connector 2 Upper plate 2a Pivot 2b Protrusion 2c Through-hole 2d Protrusion 2e Protrusion 2f Flat contact surface 3 Lower plate 3a Pivot insertion hole 3b Thermocouple groove 3c Partition part 3d Electrode plate recessed part 3e Compensation lead groove 3f Concave groove 4 Sheath Thermocouple 4a Thermocouple wire 5 Electrode plate 6 Compensating lead 6a Coating 6b Core wire 7 Clip

Claims (4)

A resin upper plate and a lower plate connected via a pivot so as to be openable and closable, and a fixture for bringing the closed contact surfaces of the upper plate and the lower plate into close contact,
The contact surface of the lower plate is formed of a groove shallower than the outer diameter of the sheath thermocouple, and the thermocouple groove for arranging the sheath thermocouple is separated from the two thermocouple wires of the sheath thermocouple. A partition part and a compensation conductor groove in which a compensation conductor is arranged are connected,
Electrode plate recesses for fixing two electrode plates are formed on both sides of the partition,
The electrode plate is fixed to the concave portion of the electrode plate via an adhesive,
The compensation lead is fixed to the compensation lead groove via an adhesive,
The two core wires exposed at the tip of the compensation conductor are connected to the electrode plates, respectively.
Further, the contact surface of the upper plate is provided with a protrusion for pressing the compensation conductor arranged in the compensation conductor groove and a protrusion for pressing the thermocouple element against the electrode plate,
The protrusions rotate the upper plate around the pivot axis to contact the lower plate, and when the protrusions are brought into close contact with each other, the two thermocouple wires separated by the partition portion are respectively connected to the electrodes. A sheath thermocouple-compensating wire connector characterized by being configured to be pressed and fixed onto a plate.   The contact surface of the upper plate is further provided with a protrusion for pressing and fixing the sheath thermocouple, and the contact surface of the lower plate is provided with a concave groove that engages with the protrusion. The sheath thermocouple / compensation lead connector according to claim 1, wherein the protrusion and the concave groove are arranged in a direction intersecting the thermocouple groove.   3. The sheath thermocouple and the compensation lead wire according to claim 1 or 2, wherein a metal flat crimp terminal is used as the electrode plate, and the core wire of the compensation lead wire is connected to the flat crimp terminal by caulking. connector.   The upper plate has a through hole at a position corresponding to the partition portion, and the partition portion is composed of a column that can be inserted into the through hole when the upper plate and the lower plate are closed. The connector of a sheathed thermocouple and a compensating lead wire according to any one of claims 1 to 3.

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