JP2018125085A - Temperature sensor unit, temperature sensor unit group, and terminal block and distribution equipment including the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a temperature sensor unit, in which, if abnormal heat generation occurs, heat is immediately transferred to a temperature sensor so that accidents, such as thermal deformation in a terminal block or the like, do not occur, and peculiar components and spaces therefor are not required.SOLUTION: A temperature sensor unit includes a temperature sensor 100 and a contact piece 200. The contact piece 200 includes: a cylindrical part 220 where a sensor part 110 of the temperature sensor 100 enters; and a tongue-shaped attachment part 210 formed integrally with the cylindrical part 220. The temperature sensor unit also includes an insulating tube, as inside insulating means 300 with insulating properties for encompassing the sensor part 110 and a lead part 120 of the temperature sensor 100 and fixing the sensor part 110 at the inside of the cylindrical part 220.SELECTED DRAWING: Figure 6

Description

  The present invention relates to a temperature sensor unit, a temperature sensor unit group, and a terminal block including a temperature sensor unit or a temperature sensor unit group that can be used to shut off a circuit when abnormal heating occurs in a terminal block or the like. The present invention relates to a power distribution device including a temperature sensor unit or a group of temperature sensor units.

  Conventionally, electrical equipment storage boxes such as distribution boards, control panels, etc. relay the wires from internal electrical equipment (internal wires or secondary wiring) and external wires (external wires or primary wiring). A terminal block is provided. In such a terminal block, the manufacturer of the electrical equipment storage box connects the internal wiring from the electrical equipment storage box. On the other hand, the external electric wire is connected by the construction contractor at the site after the electrical equipment storage box is installed at the site.

  Thus, the terminal block to which the internal electric wire, that is, the secondary wiring, and the external electric wire, that is, the primary wiring are connected is shipped with the internal electric wire connected, and only the external electric wire is connected on site. However, when an on-site contractor connects an external electric wire in the electrical equipment storage box, the connection is loosened, and as a result, there is a problem that abnormal heat generation occurs.

  In order to solve such a problem, a terminal block incorporating a thermal fuse has been proposed in order to shut off a circuit when abnormal heat generation due to abnormality such as incomplete bonding of terminals occurs.

Japanese Patent No. 5919548 JP 2006-018677 A

However, in the terminal block described in Patent Document 1, even if abnormal heat generation occurs, the heat is transmitted through the terminal block molded product main body, the insulating cover of the unit, and the air layer, so the responsiveness to temperature rise is low. In addition, there is a problem that the detection temperature of the temperature sensor is lowered.
In some cases, when the abnormal heat generation is detected, the terminal portion is already in a high temperature heating state, and there is a possibility of an accident that the terminal block is thermally deformed or burned out.

Further, in the terminal block described in Patent Document 2, since heat is transferred to the temperature sensor via the silicon resin sheet, there is a merit that the temperature rise response is high and the detection temperature of the temperature sensor is not lowered. Dedicated parts such as a resin sheet and a cover for covering the resin sheet are required.
For this reason, this terminal block requires a space for incorporating dedicated parts, resulting in a problem that the product size increases.

  The present invention was devised in view of the above circumstances, and when abnormal heat generation occurs, heat is immediately transmitted to the temperature sensor, so that an accident such as thermal deformation of the terminal block or the like does not occur, and the dedicated component And it aims at providing the temperature sensor unit which does not require the space for it.

  The temperature sensor unit according to the present invention includes a temperature sensor and a contact piece, and the contact piece includes a cylindrical portion into which a sensor portion of the temperature sensor enters, and a tongue piece formed integrally with the cylindrical portion. It has a mounting part.

  Moreover, the temperature sensor unit according to the present invention includes an inner insulating means having an insulating property that wraps the sensor portion and the lead portion of the temperature sensor.

Furthermore, the temperature sensor unit according to the present invention includes an outer insulating means having an insulating property that wraps around the temperature sensor in a state where the sensor portion enters the cylindrical portion.

  In the temperature sensor unit according to the present invention, the mounting portion is formed with a screw opening into which a screw shaft portion is fitted.

  An insulating tube is suitable as the inner insulating means, and an insulating tube is suitable as the outer insulating means.

  The contact piece may be provided at a position where the attachment portion is bent with respect to the cylindrical portion.

  The temperature sensor unit group according to the present invention includes a plurality of temperature sensor units and a base portion to which the temperature sensor units are attached, and each temperature sensor of the plurality of temperature sensor units is connected in series, The mounting portions of the contact pieces of the plurality of temperature sensor units protrude from the base portion, the temperature sensor unit includes a temperature sensor and a contact piece, and the contact piece includes a sensor portion of the temperature sensor. It has a cylindrical part to be inserted and a tongue-shaped attachment part formed integrally with the cylindrical part, the temperature sensor is an axial type, and the contact piece is an orthogonal type.

  The terminal block and current collector according to the present invention include the above-described temperature sensor unit or temperature sensor unit group.

  The temperature sensor unit according to the present invention is excellent in heat storage and thermal conductivity because the sensor portion of the temperature sensor is incorporated in the cylindrical portion of the contact piece. For this reason, when abnormal heat generation occurs, the heat is immediately transmitted to the temperature sensor, and the circuit can be shut off before an accident such as thermal deformation of the terminal block or the like occurs.

When the temperature sensor is covered with the inner insulating means, it is possible to ensure insulation and conduction between the lead wire of the temperature sensor and the contact piece. In addition, it is possible to prevent the position of the sensor part of the temperature sensor from being displaced inside the cylindrical part of the contact piece.
If the inner insulating means is an insulating tube, it can be simply put on the temperature sensor, so it is excellent in workability.

Furthermore, when the outer insulating means is provided, the temperature sensor is more firmly fixed to the contact piece, and the temperature sensor is more reliably insulated.
Note that when the outer insulating means is an insulating tube, it is only necessary to cover the cylindrical portion and the temperature sensor, so that the workability is excellent.

If the screw opening into which the shaft portion of the screw fits is formed in the attachment portion of the contact piece, it can be fastened together with the electric wire to the conductive plate of the terminal block. That is, since the temperature sensor can be externally attached to the terminal block, it is not necessary to provide a dedicated space for the temperature sensor in the terminal block, and the terminal block can be made compact.
Further, since the temperature sensor unit is directly connected to the conductive plate of the terminal block, the thermal conductivity to the temperature sensor is excellent.
Furthermore, since the temperature sensor unit can be retrofitted to the terminal block, it can be a general-purpose product.

  When the mounting part is a contact piece provided at a position bent with respect to the cylindrical part, when attached to the terminal block, the lead wire of the temperature sensor extends in a direction away from the electric wire attached to the terminal block. Interference with not only electric wires but also other parts can be avoided.

  Terminals in which a plurality of conductive plates are arranged at regular intervals in the temperature sensor unit group that is connected to the base part so that the temperature sensors of multiple temperature sensor units are connected in series and the connection part of the temperature sensor unit protrudes Since they can be attached together without being short-circuited with respect to the base, the efficiency of the attaching work to the terminal base and the wiring work is improved.

It is a schematic front view of the temperature sensor used for the temperature sensor unit which concerns on each embodiment of this invention. It is a schematic perspective view of the contact piece used for the temperature sensor unit which concerns on each embodiment of this invention. It is a schematic perspective view of the temperature sensor unit which concerns on the 1st Embodiment of this invention. It is a schematic perspective view of the temperature sensor unit which concerns on the 1st Embodiment of this invention. It is a schematic perspective view which shows the state which attached the temperature sensor unit which concerns on the 1st Embodiment of this invention to the terminal block. It is a schematic perspective view which shows an example of the temperature sensor unit which concerns on the 2nd Embodiment of this invention. It is a schematic perspective view which shows an example of the temperature sensor unit which concerns on the 3rd Embodiment of this invention. It is a schematic perspective view which shows the state which attached the temperature sensor unit which concerns on the 2nd Embodiment of this invention to the terminal block. It is a schematic perspective view which shows an example of the temperature sensor unit which concerns on the 4th Embodiment of this invention. It is a schematic perspective view which shows the state which attached the temperature sensor unit which concerns on the 4th Embodiment of this invention to the terminal block. It is a schematic perspective view of the temperature sensor unit group which concerns on the 5th Embodiment of this invention. It is a schematic perspective view of the temperature sensor unit group which concerns on the 6th Embodiment of this invention.

  The temperature sensor unit 1000 according to the embodiment of the present invention corresponds to, for example, abnormal heat generation caused by loosening of the screws 960 and 970 of the conductive plate 910 in the terminal block 900. However, the temperature sensor unit 1000 is not limited to the terminal block, and it goes without saying that the temperature sensor unit 1000 can also be used for a member that is expected to generate abnormal heat, such as a heat sink.

First, before describing the temperature sensor unit 1000 itself according to the embodiment of the present invention, the temperature sensor 100 and the contact piece 200 constituting the temperature sensor unit 1000 will be described.
In the present specification, “1000” is used as the part number to indicate the entire temperature sensor unit, but in the case of separately explaining each of the temperature sensor units, an alphabetic code is attached to the part number.
In the present specification, “100” is used as the part number to indicate the entire temperature sensor, “110” is used to indicate the entire sensor unit, and “120” is used to indicate the entire lead wire. However, in the case of explaining each separately, an alphabetic code is attached to the part number.
Further, in the present specification, “200” is indicated as the part number when indicating the entire contact piece, “210” is indicated when indicating the entire connecting portion, and “220” is indicated when indicating the entire cylindrical portion. However, in the case of explaining each separately, an alphabetic code is attached to the part number.

As shown in FIG. 1A, the temperature sensor 100 includes a so-called axial type (hereinafter referred to as “temperature sensor 100A”) in which lead portions 120 protrude from both ends of a substantially cylindrical sensor portion 110, and FIG. As shown in FIG. 5B, there is a so-called radial type (hereinafter referred to as “temperature sensor 100R”) in which a pair of lead portions 120 protrude from a substantially rectangular sensor portion 110 in parallel in the same direction.
The sensor part 110 is a part for detecting the ambient temperature, and has a pair of lead parts 120 connected to the sensor part 110.
By inserting the temperature sensor 100 into a part of the circuit, the circuit can be shut off when the surroundings are at a set temperature or higher.

Examples of the temperature sensor 100 include a temperature fuse that cuts off a circuit by melting an internal fusible body when the ambient temperature is equal to or higher than a set temperature. In the following description, a temperature fuse is taken as a representative example of the temperature sensor 100, but the temperature sensor 100 in the present invention is not limited to a temperature fuse, and may be a thermostat, a positive temperature coefficient thermistor, or the like. Absent.
That is, the temperature sensor 100 in the present invention refers to an element that shuts off the circuit when the surroundings reach a set temperature or higher.

Moreover, the contact piece 200 is comprised from the metal plate excellent in thermal conductivity.
As shown in FIG. 2A, the contact piece 200 includes a type in which the cylindrical portion 220 faces straight to the connection portion 210 (hereinafter referred to as “vertical contact piece 200V”). The cylindrical portion 220 of the vertical contact piece 200V is formed in a cylindrical shape having an inner diameter dimension that allows the sensor portion 110 of the temperature sensor 100 to enter.

In addition, as another type of contact piece 200, as shown in FIGS. 2B to 2D, a type in which the cylindrical portion 220 is orthogonal to the connection portion 210 (hereinafter, referred to as “orthogonal contact piece 200H”). )). The orthogonal contact piece 210H is also formed in a cylindrical shape having an inner diameter dimension that allows the sensor portion 110 of the temperature sensor 100 to enter.
Both types of contact pieces 200 </ b> V and 200 </ b> H are provided with through holes 211 as screw openings into which the shaft portions of the screws 960 are fitted into the connection portions 210.

The orthogonal contact piece 200H includes a type in which the connecting portion 210 is formed in a rectangular shape (see FIG. 2B), a rectangular type in which the tip of the connecting portion 210 is rounded (see FIG. 2C), and a connecting portion. There is a type in which the tip of 210 is round and the width dimension gradually increases toward the tip (see FIG. 2D), etc., but it should be selected appropriately according to the object to which the contact piece 200H is attached, the shape of the object, etc. Can do.
Of course, the difference in the shape of the connecting portion 210 exists not only in the orthogonal contact piece 200H but also in the vertical contact piece 200V.

  In addition, the contact piece 200V has a type in which the screw opening of the connection part 210 has a notch part 212 as shown in FIG. is there. A type in which the connecting portion 210 is substantially Y-shaped can also be in the orthogonal contact piece 200H.

  The temperature sensor units 1000 </ b> A <b> 1 to 1000 </ b> A <b> 5 according to the first embodiment of the present invention include a temperature sensor 100 and a contact piece 200, and the contact piece 200 is a cylindrical portion into which the sensor unit 110 of the temperature sensor 100 enters. 220 and a tongue-shaped attachment part 210 formed integrally with the tube part 220.

The temperature sensor unit 1000 including the axial temperature sensor 100A, the radial temperature sensor 100R, the vertical contact piece 200V, and the orthogonal contact piece 200H4 as described above is distinguished as follows.
That is, as shown in FIGS. 3A and 3B, the type (temperature sensor units 1000A1, 1000A2) in which the axial type temperature sensor 100A and the orthogonal type contact piece 200H are combined, as shown in FIG. As shown in FIG. 4A, the axial type temperature sensor 100A and the vertical type contact piece 100V are combined (1000A3), and as shown in FIG. 4A, the radial type temperature sensor 100R and the vertical type contact piece 200V are combined. As shown in FIG. 4B, the radial type temperature sensor 100R and the orthogonal type contact piece 200H are combined (1000A5).

Here, in the case of the temperature sensor units 1000A1 and 1000A2 using the axial type temperature sensor 100A and the orthogonal type contact piece 200H, the temperature sensor unit 1000A1 with the pair of lead wires 120 as they are (FIG. 3A). And a temperature sensor unit 1000A2 (see FIG. 3B) in which one lead wire 120 is bent.
In the case of the temperature sensor unit 1000A3 using the axial type temperature sensor 100A and using the vertical contact piece 200V, if the lead wire 120 on the connecting portion 210 side is left as it is, it is connected to a terminal block or the like. In this case, the lead wire 120 on that side is bent 180 ° as shown in FIG.
In addition, in the case where the radial type temperature sensor 100R is used like the temperature sensor units 1000A4 and 1000A5, the pair of lead wires 120 protrude in the same direction, so the lead wires 120 are not bent.

As shown in FIG. 5, the temperature sensor unit 1000 </ b> A <b> 3 configured in this way is fastened together with screws 960 to the conductive plate 910 of the terminal block 900 together with the load-side connecting wire 930 of the terminal block 900.
If the screw 970 that fixes the input side connecting wire 920 connected to the conductive plate 910 to the conductive plate 910 or the screw 960 that fixes the load side connecting wire 930 to the conductive plate 910 is loosened and abnormal heat is generated, Is transmitted to the temperature sensor 100A via the contact piece 200V, and the temperature sensor 100A is shut off. As a result, the circuit is interrupted.
In FIG. 5, a temperature sensor unit formed by combining the orthogonal contact piece 200V and the axial temperature sensor 100A shown in FIG. 3C and bending the lead wire 120 on the connecting portion 210 side by 180 °. Although 1000A3 is shown, it goes without saying that other types of temperature sensor units 1000A1, 1000A2, 1000A4, 1000A5 may be used.

In the temperature sensor units 1000A1 to 1000A5 according to the first embodiment described above, the leads of the temperature sensors 100A and 100R are used regardless of the type of the combination of the temperature sensors 100A and 100R and the contact pieces 200H and 200V. Line 120 is exposed. For this reason, there exists a possibility that the lead wire 120 and the contact piece 200 may conduct | electrically_connect. Further, when some external force is applied, the sensor unit 110 of the temperature sensor 100 may not be held inside the cylindrical part 220 of the contact piece 200 and the position may be shifted.
What has eliminated these fears is the temperature sensor unit 1000B according to the second embodiment.

The temperature sensor unit 1000B according to the second embodiment includes a temperature sensor 100, a contact piece 200, and an inner insulating means 300 having insulating properties that wraps around the sensor unit 110 and the lead unit 120 of the temperature sensor 100. The contact piece 200 includes a cylindrical part 220 into which the sensor part 110 of the temperature sensor 100 enters, and a tongue-shaped attachment part 210 formed integrally with the cylindrical part 220.
6-10, the inner side insulation means 300 is shown with the dashed-two dotted line.

The temperature sensor 100 and the contact piece 200 constituting the temperature sensor unit 1000B according to the second embodiment are the same as the temperature sensor unit 1000A3 according to the first embodiment. The characteristic of the temperature sensor unit 1000B according to the second embodiment is that it has an inner insulating means 300.
As the inner insulating means 300, an insulating tube made of silicon rubber or the like having flexibility and insulating properties is used. If this inner insulating means 300 is an axial type temperature sensor 100A, as shown in FIG. 6, the temperature sensor 100 includes a sensor portion 110 of the temperature sensor 100 and a pair of lead wires 120 protruding from both ends thereof. Attached to.

  In the temperature sensor unit 1000B shown in FIG. 6, the sensor part 110 of the temperature sensor 100 to which the inner insulating means 300 is attached is incorporated in the contact piece 200 so as to be located inside the cylinder part 220. One lead wire 120 is bent so as to be parallel to the other lead wire 120, but the sensor unit 110 and the lead unit 120 are similarly arranged on the inner side even in other types of temperature sensor units 100. It is possible to cover with the insulating means 300.

By providing the inner insulating means 300 in the temperature sensor unit 1000B in this manner, it is possible to ensure insulation and conduction between the lead wire 120 and the contact piece 200 and to prevent the sensor unit 110 of the temperature sensor 100 from contacting the contact piece. It is also possible to prevent positional displacement inside the 200 cylindrical portion 220.
The temperature sensor unit 1000B according to the second embodiment configured as described above is similar to the temperature sensor units 1000A1 to 1000A5 according to the first embodiment as shown in FIG. Together with the side connection wires 930, they are fastened together with screws 960 to the conductive plate 910 of the terminal block 900.

The temperature sensor unit 1000C according to the third embodiment is obtained by further providing outer insulating means 400 to the temperature sensor unit 1000B according to the second embodiment.
As the inner insulating means 300, the outer insulating means 400 is made of an insulating tube made of silicon rubber or the like having flexibility and insulating properties. However, the outer insulating means 400 must have a larger inner diameter than the inner insulating means 300.
In FIG. 7, the outer insulating means 400 is indicated by a two-dot chain line.

As shown in FIG. 7, the outer insulating means 400 simultaneously wraps the temperature sensor 100 provided with the inner insulating means 300 and the cylindrical portion 220 of the contact piece 200 to which the temperature sensor 100 is attached.
Thus, when the temperature sensor 100 and the cylinder part 220 are simultaneously wrapped by the outer insulating means 400, the fixing and insulation of the temperature sensor 100 with respect to the contact piece 200 become more reliable.

  7 shows the temperature sensor 100 in which one lead wire 120 is bent so as to be parallel to the other lead wire 120, the same applies to other types of temperature sensor units 100. Of course, the sensor part 110 and the lead part 120 can be covered with the inner insulating means 300, and the cylindrical part 220 can be wrapped with the outer insulating means 400 from above.

In the second and third embodiments described above, the inner insulating means 300 and the outer insulating means 400 are insulating tubes made of silicon rubber or the like, but the present invention is not limited to this.
Needless to say, it may be an insulating tube made of other materials. Further, the inner insulating means 300 and the outer insulating means 400 can be formed by winding a sheet instead of a tube.
Furthermore, it is also possible to use as the inner insulating means 300 and the outer insulating means 400 an insulating material that is liquid and solidifies over time, such as a silicon-based adhesive.

In the temperature sensor units 1000A1 to 1000A5, 1000B, and 1000C according to the first to third embodiments described above, the mounting portion 210 of the contact piece 200 is located on the same plane as the cylindrical portion 220, that is, the mounting portion 210 is a cylindrical shape. It was provided at a straight position with respect to the portion 220.
However, as in the temperature sensor unit 1000D according to the fourth embodiment shown in FIG. 9, it is also possible to use the contact piece 200 provided at a position where the mounting portion 210 is bent with respect to the cylindrical portion 220. is there.
In the temperature sensor unit 1000D according to the fourth embodiment, the attachment portion 210 is bent with respect to the cylindrical portion 220. Therefore, when the temperature sensor unit 1000D is attached to the terminal block 900 as shown in FIG. Since the lead wire 120 extends in a direction away from the load-side connecting wire 930, interference with not only the load-side connecting wire 930 but also other components (not shown) can be avoided.

The temperature sensor unit 1000D according to the fourth embodiment is shown in FIGS. 9 and 10 in which only the inner insulating means 300 and no outer insulating means 400 are shown, but the outer insulating means 400 is included. Of course it may be.
9 and 10 show the temperature sensor unit 1000D based on the temperature sensor unit 1000A3 shown in FIG. 3C, it goes without saying that another temperature sensor unit 1000 may be used. Absent.

The temperature sensor units 1000A1 to 1000A5, 1000B, 1000C, and 1000D according to the first to fourth embodiments described above are configured by one temperature sensor 100 and one contact piece 200.
However, a plurality of terminal blocks 900 are attached to the rails, and a plurality of conductive plates 910 are arranged at regular intervals.
If the temperature sensor units 1000A1 to 1000A5, 1000B, 1000C, and 1000D are provided on each conductive plate 910, it takes time for installation, and in some cases, the adjacent temperature sensor units 1000A1 to 1000A5, 1000B, 1000C, and 1000D are short-circuited. May end up.
The temperature sensor unit group 5000A according to the fifth embodiment solves this problem.

  The temperature sensor unit group 5000A according to the fifth embodiment includes a plurality (three in the drawing) of temperature sensor units 1000A1 and a wiring board 510 as a base portion to which the temperature sensor units 1000A1 are attached. The temperature sensors 100 of the plurality of temperature sensor units 1000A1 are connected in series, and the mounting portion 210 of the contact piece 200 of the plurality of temperature sensor units 1000A1 protrudes from the wiring board 510, and the temperature sensor unit 1000A1 Has a temperature sensor 100 and a contact piece 200. The contact piece 200 has a cylindrical part 220 into which the sensor part 110 of the temperature sensor 100 enters, and a tongue piece formed integrally with the cylindrical part 220. The temperature sensor 100 is attached to the temperature sensor 100. It is of tangential type, the contact piece 200 is of orthogonal type.

The temperature sensor unit 1000A1 is basically the one shown in FIG. The temperature sensor unit 1000 </ b> A <b> 1 is connected in series with the sensor unit 110 positioned in the cylindrical part 220 of each contact piece 200. The distance between the contact pieces 200 is set to match the distance between the conductive plates 910 of the terminal block 900 to be attached.
A wiring board 510 as a base portion to which the contact piece 200 is attached is an elongated pattern wiring board as shown in FIG. 11, and lead wires 120 outside the temperature sensor 100 located at both ends are provided on the wiring board 510. Not connected to the wiring pattern.
The contact piece 200 is fixed to the wiring board 510 with an appropriate material such as a heat-resistant adhesive or an attachment means such as soldering.
Moreover, since the connection portion 210 of the contact piece 200 constituting the temperature sensor unit 1000A1 protrudes from the wiring board 510, the wiring board 510 can be securely attached to the conductive plate 910 without interfering with the terminal block 900.

  With the temperature sensor unit group 5000A, the entire circuit can be shut off when any of the temperature sensors 100 is exposed to abnormal heat generation. In addition, since the plurality of temperature sensor units 1000A1 are fixedly provided by the wiring board 510, the efficiency of the mounting work and wiring work to the terminal block 900 is improved, and not only can it be easily mounted, There is no interference or short circuit with the adjacent temperature sensor unit 1000A1 when mounting.

The temperature sensor unit group 5000B according to the sixth embodiment uses a storage case 520 instead of the wiring board 510 as a base part of the temperature sensor unit group 5000A according to the fifth embodiment described above.
In FIG. 12, for convenience of drawing, the storage case 520 is indicated by a two-dot chain line so that the inside can be seen. The storage case 520 is made of a transparent or opaque material.

The storage case 520 is formed of an insulating material and has an elongated rectangular tube shape as a whole, and a window portion 521 corresponding to the interval between the conductive plates 910 of the terminal block 900 to be attached is provided on one surface thereof. . This window part 521 is a part in which the temperature sensor unit 1000A1 is accommodated. And from each window part 521, the attaching part 210 of the contact piece 200 of temperature sensor unit 1000A1 accommodated protrudes.
Note that the lead wires 120 outside the temperature sensor 100 located at both ends are led out through small holes 523 formed in the end surface 522 of the storage case 520.

The temperature sensor unit group 5000B according to the sixth embodiment has the following further effects in addition to the effects of the temperature sensor unit group 5000A according to the fifth embodiment.
That is, since the temperature sensor unit group 5000B according to the sixth embodiment uses the cylindrical storage case 520 as described above as the base portion, the position of the temperature sensor unit 1000A1 is fixed by the window portion 521. To be determined. For this reason, it is not necessary to fix the temperature sensor unit 1000A1 with an appropriate material such as a heat-resistant adhesive or mounting means such as soldering, as in the case where the wiring board 510 is used as the base portion.

  Furthermore, it goes without saying that a terminal block in which a temperature sensor unit or a group of temperature sensor units as described above is incorporated is also included in the present invention.

DESCRIPTION OF SYMBOLS 100 Temperature sensor 110 Sensor part 120 Lead wire 200 Contact piece 210 Mounting part 220 Tube part 1000A1 Temperature sensor unit

Claims (10)

  The contact piece includes a temperature sensor and a contact piece, and the contact piece includes a cylindrical portion into which the sensor portion of the temperature sensor enters, and a tongue-like attachment portion formed integrally with the cylindrical portion. A temperature sensor unit characterized by that.   2. The temperature sensor unit according to claim 1, further comprising an inner insulating means having an insulating property for enclosing the sensor portion and the lead portion of the temperature sensor.   The temperature sensor unit according to claim 1 or 2, further comprising an outer insulating means having insulating properties that wraps around the temperature sensor in a state where the sensor portion enters the cylindrical portion.   4. The temperature sensor unit according to claim 1, wherein a screw opening into which a shaft portion of the screw is fitted is formed in the attachment portion.   The temperature sensor unit according to claim 2, 3 or 4, wherein the inner insulating means is an insulating tube.   The temperature sensor unit according to claim 3 or 4, wherein the outer insulating means is an insulating tube.   The temperature sensor unit according to claim 1, wherein the contact piece is provided at a position where the attachment portion is bent with respect to the cylindrical portion.   A plurality of temperature sensor units; and a base portion to which the temperature sensor units are attached. The temperature sensors of the plurality of temperature sensor units are connected in series, and the contact pieces of the plurality of temperature sensor units are connected to each other. The mounting portion protrudes from the base portion, the temperature sensor unit includes a temperature sensor and a contact piece, and the contact piece includes a tubular portion into which the sensor portion of the temperature sensor enters, and the tubular portion. A temperature sensor unit group having a tongue-shaped attachment portion formed integrally, the temperature sensor being an axial type, and the contact piece being an orthogonal type.   9. A terminal block comprising the temperature sensor unit according to claim 1, 2, 3, 4, 5, 6 or 7, or the temperature sensor unit group according to claim 8.   A power distribution apparatus comprising the temperature sensor unit according to claim 1, or the temperature sensor unit group according to claim 8.

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