JP5655702B2 - Temperature sensor, method for manufacturing temperature sensor, and pressure sensor with temperature sensor - Google Patents

Description

  The present invention relates to a temperature sensor provided with a temperature detection element such as a thermistor element, a method for manufacturing the temperature sensor, and a pressure sensor with a temperature sensor.

  As an example of a temperature sensor built in a pressure sensor with a temperature sensor, a sensor having a temperature detecting element such as a thermistor element, a pair of leads, and a protective tube for insulating and protecting the pair of leads is known. . The temperature detection element and the protective tube of this temperature sensor are coated with a coating material.

JP 2009-192424 A

  When coating the temperature detection element and the protective tube of the temperature sensor with a coating material, for example, the temperature detection element and the protection tube are immersed in a coating material tank in which a coating material such as an organic coating material (polyamide) is stored in liquid form. Then, it is coated by drying.

  In this coating process, until the coating material dries, the coating material crawls up along both protective tubes between the protective tubes due to capillary action, and as a result, detects the anti-temperature of both protective tubes. In some cases, coating is performed up to the element side end. In such a case, if the opposite ends of the opposite temperature detection elements are separated from each other during wiring, the coating material that coats the opposite ends of the opposite temperature detection elements is not only damaged, but also due to this damage. The stress to be transmitted is transmitted to the coating material in the vicinity of the temperature detection element, and there is a possibility that breakage such as a crack may occur.

  There exists a temperature sensor described in patent document 1 as a structure which eliminates the said malfunction. In this temperature sensor, a protrusion is provided at the end of the protective tube on the side opposite to the temperature detection element, and the distance between the ends of the pair of protection tubes on the side opposite to the temperature detection element is increased by contacting the protrusions. This prevents the coating material from creeping up between the two protective tubes due to the capillary phenomenon. However, in the case of the above-described configuration, there is a problem in that the manufacturing cost increases because a protrusion must be provided at the end of the protective tube.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a temperature sensor and a temperature sensor that can satisfactorily coat a temperature detection element and a protective tube for protecting the lead. And a pressure sensor with a temperature sensor.

According to the first aspect of the present invention, the temperature detection element, the pair of lead wires led out from the temperature detection element, the pair of protection tubes protecting the pair of lead wires, the temperature detection element and the protection tube And a lead material and a tip of the protective tube are branched in a Y-shape, and the lead wire is branched from the Y-shaped branch portion. Is exposed from the protective tube, and when the temperature detecting element, the lead wire, and the protective tube are immersed in the coating material, the liquid level of the coating material is changed between the lead wire and the protective tube. Since it is configured to be positioned below the Y-shaped branch at the tip, the temperature detection element and the protective tube that protects the lead are good. It can be coated well.

  In this case, as in the invention of claim 2, after the lead wire and the distal end portion of the protective tube branch in a Y shape, the lead wire is exposed from the protective tube, and the exposed lead wires are It is preferably configured to be bent and extend in directions opposite to each other.

  According to a third aspect of the present invention, either one of the pair of lead wires is exposed from the protective tube to a portion located below the Y-shaped branch portion. It is good to configure.

According to invention of Claim 4, a temperature detection element, a pair of lead wire derived | led-out from this temperature detection element, a pair of protective tube which protects these pair of lead wires, the said temperature detection element, and the said protection tube In the manufacturing method of the temperature sensor provided with the coating material for insulating coating, the lead wire and the tip of the protective tube are branched in a Y shape, and on the branch line portion side branched from the Y-shaped branch portion The step of forming the lead wire so as to be exposed from the protective tube, and when the temperature detecting element, the lead wire, and the protective tube are immersed in the coating material, the liquid level of the coating material is the lead wire. And the step of immersing so as to be positioned below the Y-shaped branch at the tip of the protective tube. It is possible to obtain substantially the same operational effects.

  In this case, as in the fifth aspect of the invention, in the step of forming the Y-shaped branch, the lead tube and the protective tube are branched into the Y shape after the protective tube is inserted into the lead wire. It is preferable to form such that

  According to a sixth aspect of the present invention, in the step of branching into a Y shape, the protective tube is formed to branch into a Y shape before the protection tube is inserted into the lead wire. After that, it is preferable that the protective tube is inserted into the lead wire so that the lead wire and the protective tube are branched in a Y shape.

  Further, the temperature of the measurement medium can be detected by the temperature sensor according to any one of claims 1 to 3 and the pressure of the measurement medium can be detected by the pressure detection element. It is preferable to provide a pressure sensor with a temperature sensor.

  According to an eighth aspect of the present invention, the positioning unit includes a housing having a pressure detection chamber and a pressure introduction hole, to which the temperature sensor is mounted, and positioning the housing with the pair of lead wires of the temperature sensor interposed therebetween. Since the temperature sensor is provided, the temperature sensor can be mounted with high accuracy.

  In this case, as in a ninth aspect of the invention, the positioning portion includes a central positioning portion that contacts each branch portion of the pair of lead wires and one positioning portion that contacts one branch portion of the pair of lead wires. It is preferable to provide a part and the other positioning part which contact | abuts the other branch part of a pair of said lead wire.

  According to a tenth aspect of the present invention, the central positioning portion is in point contact with the pair of lead wires, the one positioning portion is in point contact with one of the pair of lead wires, and the other positioning portion is It is preferable to make a point contact with the other of the pair of lead wires.

  Further, as in the invention of claim 11, the central positioning portion is in point contact with the pair of lead wires, the one positioning portion is in line contact with one of the pair of lead wires, and the other positioning portion is It is preferable that the wire is in contact with the other of the pair of lead wires.

1 is a schematic longitudinal sectional view of a pressure sensor with a temperature sensor showing a first embodiment of the present invention. Front view around the temperature sensor of the pressure sensor with temperature sensor Front view of temperature sensor before coating process Front view of temperature sensor after coating process Front view of temperature sensor and positioning part FIG. 5 equivalent view showing the second embodiment of the present invention FIG. 5 equivalent view showing a third embodiment of the present invention. FIG. 3 equivalent view showing the fourth embodiment of the present invention. 4 equivalent diagram

  Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. 1 to 5. FIG. 1 is a schematic cross-sectional view of the overall configuration of the pressure sensor with temperature sensor 1 of the present embodiment. The pressure sensor 1 with a temperature sensor can be applied to, for example, an intake pressure sensor that is attached to an intake manifold of an automobile and used to measure the pressure of the intake manifold and the intake air temperature.

  As shown in FIG. 1, a pressure sensor 1 with a temperature sensor mainly includes a connector case 3 on which a pressure detection element 2 capable of detecting the pressure of a measurement medium is mounted, and a connector case 3 so as to cover the pressure detection element 2. And a temperature sensor 6 capable of detecting the temperature of the measurement medium in the vicinity of the pressure introduction hole 4. The housing 5 is provided with a pressure introduction hole 4 for introducing pressure into the pressure detection element 2. .

  The connector case 3 is formed by molding a resin material such as PPS (polyphenylene sulfide), PBT (polybutylene terephthalate) or epoxy resin using a mold. An opening 7 for mounting the pressure detection element 2 is formed on the lower end surface of the connector case 3.

  The connector case 3 is integrally provided with a plurality of terminals 8 made of copper, 42 alloy or the like connected to the outside by insert molding. One end of some of the terminals 8 is disposed so as to be exposed in the opening 7. The other end of each terminal 8 exposed at the opening 9 at the right end of the connector case 3 in FIG. 1 is connected to an external circuit (such as an ECU of a vehicle) via an external wiring member (not shown) such as a wire harness. ) To be electrically connected.

  The pressure detection element 2 is a pressure detection unit that detects a measurement pressure. Specifically, the pressure detection element 2 detects a pressure and generates an electric signal having a level corresponding to the detected value. The pressure detection element 2 includes, for example, a sensor chip made of a semiconductor and a glass pedestal that holds the sensor chip. Although the sensor chip is not limited, for example, a bridge having a well-known configuration using a piezoresistive effect made of a silicon semiconductor chip or the like and formed by a diaphragm distorted by pressure on its upper surface and a diffusion resistor, etc. It has a configuration with a circuit and the like.

  The pressure detection element 2 is die-bonded between the bottom surface of the opening 7 on the lower end side of the connector case 3 and the glass pedestal with an adhesive (not shown) such as silicone rubber interposed therebetween. Each input / output terminal (bonding pad) (not shown) of the pressure detection element 2 is electrically connected to the terminal 8 via a bonding wire 10 such as gold or aluminum.

  The opening 7 on the lower end side of the connector case 3 is filled with a protective member 11 made of fluorine-based gel or fluorine-based rubber having excellent electrical insulation and chemical resistance. The protective member 11 seals and protects the interface between the terminal 8 and the connector case 3, the pressure detecting element 2, the bonding wire 10, and the like.

  The housing 5 is connected to the connector case 3 so as to cover the opening 7 on the lower end side of the connector case 3. A pressure detection chamber 12 is formed between the connector case 3 and the housing 5. The housing 5 is configured as a pressure introduction port into which a measurement pressure is introduced. Like the connector case 3, the housing 5 is made of a heat-resistant resin material such as PBT, PPS, and the like. It is formed by using a mold.

  The housing 5 projects in a direction opposite to the connector case 3 (downward in FIG. 1), and a pressure introduction hole 4 is formed in the housing 5 from the projecting tip to the pressure detection chamber 12. An O-ring 14 is provided on the outer peripheral portion of the housing 5, and the pressure sensor with temperature sensor 1 can be airtightly attached to a sensor attachment portion (not shown) via the O-ring 14.

  A temperature sensor 6 is disposed near the tip of the pressure introducing hole 4 of the housing 5. As shown in FIG. 3, the temperature sensor 6 includes a thermistor element 16 as a temperature detection element, and a pair of lead wires 17 and 18 that output a detection signal from the thermistor element 16. A specific configuration of the temperature sensor 6 will be described later.

  The pair of lead wires 17 and 18 of the temperature sensor 6 are respectively connected to one end portions 19a (see FIG. 2) of two terminals 19 integrally formed with the housing 5 by welding or the like. A protective member 15 made of fluorine-based gel or fluorine-based rubber having excellent electrical insulation and chemical resistance is filled (potted) around the welded portion between the lead wires 17 and 18 and one end 19a of the terminal 19. Yes. The other ends of these terminals 19 are connected to the terminals 8 of the corresponding connector cases 3 by welding or the like.

  Here, a specific configuration of the temperature sensor 6 will be described in detail with reference to FIGS. 3 and 4. As shown in FIG. 3, the pair of lead wires 17 and 18 of the temperature sensor 6 are covered with protective tubes 20 and 21 made of, for example, polyimide resin, and are electrically protected by the protective tubes 20 and 21. . The length of the lead wires 17 and 18 is longer than the length of the protective tubes 20 and 21, and the leading ends of the lead wires 17 and 18 are not covered with the protective tubes 20 and 21 and are exposed.

  In this case, the lead wires 17 and 18 and the protective tubes 20 and 21 are formed (changed in shape) into the shape shown in FIG. That is, the lead wires 17 and 18 and the protective tubes 20 and 21 led out from the thermistor element 16 extend straight in parallel and are branched in a Y shape at the branch point 22. An angle A formed by the lead wires 17 and 18 and the branch wire portions 17a, 18a, 20a, and 21a of the protective tubes 20 and 21 is set to 30 degrees or more, for example.

  The branch line portions 17a and 18a of the lead wires 17 and 18 are exposed from the branch line portions 20a and 21a of the protective tubes 20 and 21, and then bent at the bending points 23 and 24, and the bent portions 17b and 18b are bent. Extend in opposite directions. In this case, the bent portions 17b and 18b, the two lead wires 17 and 18 that extend straight in parallel and the protective tubes 20 and 21 are orthogonal (that is, bent so as to form an angle of 90 degrees). In this embodiment, the branch wire portions 20a and 21a of the protective tubes 20 and 21 are configured to cover the portions of the lead wires 17 and 18 near the branch point 22 of the lead wires 17 and 18; , 18 may be configured such that only one of the branch line portions 17a and 18a is covered and the other is exposed.

  Moreover, it is preferable to form the lead wires 17 and 18 and the protective tubes 20 and 21 in the above-described shape (change in shape) after inserting the lead wires 17 and 18 into the protective tubes 20 and 21. In this case, considering the ease of forming and maintaining the shape after forming, it is preferable to set the outer diameter of the lead wires 17 and 18 to, for example, about 0.3 mm or less than about 0.3 mm.

  In addition, as a method different from the above forming method, before inserting the lead wires 17 and 18 into the protective tubes 20 and 21, the shape of the protective tubes 20 and 21 is formed into the shape (branch shape) shown in FIG. In addition, there is a method of inserting the lead wires 17 and 18 into the protective tubes 20 and 21 thus formed. In the case of this method, considering the insertability of the lead wires 17 and 18, the radius of curvature of the forming portion (that is, the bent portion or the arc-shaped portion) of the protective tubes 20 and 21 is twice the diameter of the protective tubes 20 and 21. It is preferable to set the above. Moreover, it is preferable to set the outer diameter dimension of the lead wires 17 and 18 to about 0.3 mm or about 0.3 mm or less, for example.

  Next, the thermistor element 16 and the protective tubes 20 and 21 of the temperature sensor 6 formed as described above are provided with an organic coating material 25 such as polyamide resin for electrical protection as shown in FIG. Insulated coating. In this case, when coating with the organic coating material 25, the coating is performed by immersing the temperature sensor 6 in a coating material tank (not shown) in which the coating material 25 is stored in a liquid state and then drying. Specifically, it is immersed so that the liquid level of the coating material 25 reaches the position indicated by the arrow B in FIG. At this time, the coating material 25 crawls up along the two protection tubes 20 and 21 between the two protection tubes 20 and 21 due to a capillary phenomenon, but the coating material 25 scoops at the branching point 22 portion of the protection tubes 20 and 21. It is configured to stop the rise.

  Then, when drying of the coating material 25 coated as described above is completed, the temperature sensor 6 is attached to the housing 5 as shown in FIGS. In this case, it attaches so that the thermistor element 16 may be arrange | positioned near the front-end | tip of the pressure introduction hole 4 of the housing 5. FIG. At this time, as shown in FIGS. 2 and 5, the housing 5 includes branch line portions 17 a and 18 a of the lead wires 17 and 18 of the temperature sensor 15 and branch line portions 20 a and 21 a of the protective tubes 20 and 21. Positioning portions 26, 27, and 28 for guiding and positioning are provided.

  Specifically, the branch wire portions 17a and 18a of the lead wires 17 and 18 are formed in a substantially Y-shaped groove portion formed by the substantially triangular positioning portion 27 at the center and the left and right positioning portions 26 and 28. The branch line portions 20a and 21a of the protective tubes 20 and 21 are accommodated. As a result, the positioning wire 27 is sandwiched between the positioning portion 27 and the positioning portion 26, and the branch wire portion 18 a of the lead wire 18 is sandwiched between the positioning portion 27 and the positioning portion 28. It has a configuration for positioning. In this case, the central positioning portion 27 contacts the branch wire portions 17a and 18a of the pair of lead wires 17 and 18, and one positioning portion 26 contacts the one branch wire portion 17a of the pair of lead wires 17 and 18. The other positioning portion 28 is in contact with the other branch line portion 17b of the pair of lead wires 17 and 18. Thereafter, as shown in FIGS. 1 and 2, the bent portions 17 b and 18 b of the lead wires 17 and 18 and the terminals 19 and 19 embedded in the housing 5 are connected by welding, for example.

  According to this embodiment having such a configuration, the lead wires 17 and 18 of the temperature sensor 6 and the distal ends of the protective tubes 20 and 21 are configured to be branched in a Y shape, and the thermistor element 16 and the lead wire 17 are branched. , 18 and the protective tubes 20, 21 are immersed in the coating material 25, the liquid surface of the coating material 25 has a Y-shaped branch (branch point) at the leading ends of the lead wires 17, 18 and the protective tubes 20, 21. 22), the coating material 25 is along the protection tubes 20 and 21 between the protection tubes 20 and 21 by capillary action until the coating material 25 is dried. Even if it crawls up like this, the coating material 25 can be prevented from scooping up at the position of the branch portion (branch point 22).

  In the above embodiment, since the housing 5 is provided with the three positioning portions 26, 27, 28, when the temperature sensor 6 is attached to the housing 5, The branch wire portions 17a and 18a of the lead wires 17 and 18 and the branch wire portions 20a and 21a of the protective tubes 20 and 21 are accommodated and positioned in a Y-shaped groove formed by the positioning portions 26 and 28. Can do. Thereby, the mounting position of the temperature sensor 6 and the thermistor element 16, that is, the positioning of the height position in the vertical direction and the center position in the horizontal direction can be realized with high accuracy.

  The positional relationship (attachment position) of the temperature sensor 6 (thermistor element 16) with the housing 5 that is the counterpart component greatly contributes to the responsiveness and reliability of the temperature sensor 6. In this case, the responsiveness of the temperature sensor 6 is higher as the thermal capacity of the thermistor element 16 is smaller, and the responsiveness is higher as the heat conduction from the lead wires 17 and 18 is smaller. Therefore, if the configuration allows the position of the thermistor element 16 to be determined with high accuracy, the responsiveness of the temperature sensor 6 can be realized with high accuracy. Further, the temperature sensor 6 has a configuration in which the portion of the thermistor element 16 and the lead wires 17 and 18 covered with the coating material 25 is protruded during the flow of the intake air, so the influence of the protrusion length, air pulsation, etc. As a result, the lead wires 17 and 18 may be damaged. For this reason, the management of the protrusion length, that is, the positioning management of the temperature sensor 6 is important.

  FIG. 6 shows a second embodiment of the present invention. In addition, the same code | symbol is attached | subjected to the same part as 1st Embodiment. In the second embodiment, each of the left and right positioning portions 29 and 30 has a square shape. Then, the bent portions 17b and 18b of the lead wires 17 and 18 are placed on the positioning portions 29 and 30, and the lead wires 17 and 18 are sandwiched between the positioning portion 27 and the positioning portions 29 and 30, whereby the temperature sensor 6 is placed. It was set as the structure which positions. In this case, the central positioning portion 27 is in point contact with the branch front portions 17a and 18a of the pair of lead wires 17 and 18, and one positioning portion 29 is connected to one folding line portion 17b of the pair of lead wires 17 and 18. The other positioning portion 30 is in line contact with the other bent portion 18b of the pair of lead wires 17 and 18. The configuration of the second embodiment other than that described above is the same as the configuration of the first embodiment. Therefore, in the second embodiment, substantially the same operational effects as in the first embodiment can be obtained.

  FIG. 7 shows a third embodiment of the present invention. In addition, the same code | symbol is attached | subjected to the same part as 1st Embodiment. In the third embodiment, each of the three positioning portions 31, 32, and 33 has a circular shape, the branch line portion 17 a of the lead wire 17 is sandwiched between the positioning portion 31 and the positioning portion 32, and the positioning portion 32 and The branch wire portion 18 a of the lead wire 18 is sandwiched between the positioning portion 33 and the positioning portion 33. In this case, the central positioning portion 32 makes point contact with the branch wire portions 17a and 18a of the pair of lead wires 17 and 18, and one positioning portion 31 makes point contact with one branch wire portion 17a of the pair of lead wires 17 and 18. The other positioning portion 33 is in point contact with the other branch line portion 18 a of the pair of lead wires 17 and 18. The configuration of the third embodiment other than that described above is the same as the configuration of the first embodiment. Therefore, in the third embodiment, substantially the same operational effects as in the first embodiment can be obtained.

  8 and 9 show a fourth embodiment of the present invention. In addition, the same code | symbol is attached | subjected to the same part as 1st Embodiment. In the fourth embodiment, the length of one protective tube 20 of the temperature sensor 15 is shortened to increase the exposed portion of one lead wire 17. The configuration of the fourth embodiment other than that described above is the same as the configuration of the first embodiment. Therefore, also in the fourth embodiment, substantially the same operational effects as in the first embodiment can be obtained.

  In each of the above embodiments, the shape of the positioning portion is the shape shown in FIGS. 5, 6, and 7, but other shapes may be used. Further, the number of positioning portions is not limited to three, but may be four or more.

  In the drawings, 1 is a pressure sensor with a temperature sensor, 2 is a pressure detection element, 4 is a pressure introduction hole, 5 is a housing, 6 is a temperature sensor, 8 is a terminal, 12 is a pressure detection chamber, 14 is an O-ring, and 16 is a thermistor. Elements, 17 and 18 are lead wires, 19 is a terminal, 20 and 21 are protective tubes, 22 is a branch point, 25 is a coating material, 26, 27, 28, 29, 30, 31, 32, and 33 are positioning portions. .

Claims (20)

A temperature detecting element; a pair of lead wires led out from the temperature detecting element; a pair of protective tubes protecting the pair of lead wires; and a coating material for insulatingly coating the temperature detecting element and the protective tube. In the temperature sensor
The tip of the lead wire and the protective tube is configured to branch in a Y shape,
The lead wire is configured to be exposed from the protective tube on the branch line portion side branched from the Y-shaped branch portion,
When the temperature detection element, the lead wire, and the protective tube are immersed in the coating material, the liquid level of the coating material is lower than the Y-shaped branch at the tip of the lead wire and the protective tube. A temperature sensor configured to be located in   The lead wire and the tip of the protective tube are branched in a Y shape, and then the lead wire is exposed from the protective tube, and the exposed lead wires are bent and extend in directions opposite to each other. The temperature sensor according to claim 1, wherein the temperature sensor is provided.   The lead wire of any one of the pair of lead wires is configured to be exposed from the protective tube up to a portion located below the Y-shaped branch portion. 2. The temperature sensor according to 2. A temperature detecting element; a pair of lead wires led out from the temperature detecting element; a pair of protective tubes protecting the pair of lead wires; and a coating material for insulatingly coating the temperature detecting element and the protective tube. In a method for manufacturing a temperature sensor,
Forming the lead wire and the tip of the protective tube in a Y shape, and forming the lead wire to be exposed from the protective tube on the branch wire portion side branched from the Y-shaped branch portion ;
When the temperature detection element, the lead wire, and the protective tube are immersed in the coating material, the liquid level of the coating material is lower than the Y-shaped branch at the tip of the lead wire and the protective tube. And a step of immersing so as to be positioned in the temperature sensor.   The step of forming in a Y-shaped branch is formed so that the lead wire and the protective tube are branched in a Y shape after the protective tube is inserted into the lead wire. 4. A method for producing a temperature sensor according to 4.   In the step of forming the protective tube so as to be branched in a Y shape, the protective tube is formed so as to be branched in a Y shape before the protective tube is inserted into the lead wire. The temperature sensor manufacturing method according to claim 4, wherein the lead wire and the protective tube are inserted into a lead wire and branched in a Y shape. A pressure sensor with a temperature sensor, wherein the temperature of the measurement medium can be detected by the temperature sensor according to any one of claims 1 to 3, and the pressure of the measurement medium can be detected by a pressure detection element. A housing having a pressure detection chamber and a pressure introduction hole, to which the temperature sensor is attached;
8. The pressure sensor with a temperature sensor according to claim 7, wherein a positioning portion is provided in the housing for positioning with a pair of lead wires of the temperature sensor interposed therebetween.   The positioning portion includes a central positioning portion that contacts the pair of lead wires, one positioning portion that contacts one of the pair of lead wires, and the other positioning portion that contacts the other of the pair of lead wires. The pressure sensor with a temperature sensor according to claim 8, comprising:   The central positioning portion makes point contact with the pair of lead wires, the one positioning portion makes point contact with one of the pair of lead wires, and the other positioning portion makes point contact with the other of the pair of lead wires. The pressure sensor with a temperature sensor according to claim 9.   The central positioning portion makes point contact with the pair of lead wires, the one positioning portion makes line contact with one of the pair of lead wires, and the other positioning portion makes line contact with the other of the pair of lead wires. The pressure sensor with a temperature sensor according to claim 9. A temperature detecting element; a pair of lead wires led out from the temperature detecting element; a pair of protective tubes protecting the pair of lead wires; and a coating material for insulatingly coating the temperature detecting element and the protective tube. In the temperature sensor
The tip of the lead wire and the protective tube is configured to branch in a Y shape,
  When the temperature detection element, the lead wire, and the protective tube are immersed in the coating material, the liquid level of the coating material is lower than the Y-shaped branch at the tip of the lead wire and the protective tube. Configured to be located in
Any one of the pair of lead wires is configured to be exposed from the protective tube up to a portion located below the Y-shaped branch portion. The lead wire and the tip of the protective tube are branched in a Y shape, and then the lead wire is exposed from the protective tube, and the exposed lead wires are bent and extend in directions opposite to each other. The temperature sensor according to claim 12, wherein the temperature sensor is provided. A temperature detecting element; a pair of lead wires led out from the temperature detecting element; a pair of protective tubes protecting the pair of lead wires; and a coating material for insulatingly coating the temperature detecting element and the protective tube. In a method for manufacturing a temperature sensor,
Forming the lead wire and the tip of the protective tube so as to branch in a Y shape;
When the temperature detection element, the lead wire, and the protective tube are immersed in the coating material, the liquid level of the coating material is lower than the Y-shaped branch at the tip of the lead wire and the protective tube. A step of immersing so as to be located in
A temperature sensor characterized in that, in the step of forming to branch into a Y shape, the lead wire and the protection tube are formed to branch into a Y shape after the protection tube is inserted into the lead wire. Manufacturing method. A temperature detecting element; a pair of lead wires led out from the temperature detecting element; a pair of protective tubes protecting the pair of lead wires; and a coating material for insulatingly coating the temperature detecting element and the protective tube. In a method for manufacturing a temperature sensor,
Forming the lead wire and the tip of the protective tube so as to branch in a Y shape;
When the temperature detection element, the lead wire, and the protective tube are immersed in the coating material, the liquid level of the coating material is lower than the Y-shaped branch at the tip of the lead wire and the protective tube. A step of immersing so as to be located in
In the step of forming the protective tube so as to be branched in a Y shape, the protective tube is formed so as to be branched in a Y shape before the protective tube is inserted into the lead wire. A method for manufacturing a temperature sensor, wherein the lead wire and the protective tube are formed so as to be branched into a Y shape by being inserted into a lead wire. A pressure sensor with a temperature sensor, wherein the temperature of the measurement medium can be detected by the temperature sensor according to claim 12 or 13, and the pressure of the measurement medium can be detected by a pressure detection element. A housing having a pressure detection chamber and a pressure introduction hole, to which the temperature sensor is attached;
The pressure sensor with a temperature sensor according to claim 16, wherein a positioning portion for positioning the pair of lead wires of the temperature sensor is provided in the housing. The positioning portion includes a central positioning portion that contacts the pair of lead wires, one positioning portion that contacts one of the pair of lead wires, and the other positioning portion that contacts the other of the pair of lead wires. The pressure sensor with a temperature sensor according to claim 17, comprising: The central positioning portion makes point contact with the pair of lead wires, the one positioning portion makes point contact with one of the pair of lead wires, and the other positioning portion makes point contact with the other of the pair of lead wires. 19. The pressure sensor with a temperature sensor according to claim 18, wherein the pressure sensor has a temperature sensor. The central positioning portion makes point contact with the pair of lead wires, the one positioning portion makes line contact with one of the pair of lead wires, and the other positioning portion makes line contact with the other of the pair of lead wires. 19. The pressure sensor with a temperature sensor according to claim 18, wherein the pressure sensor has a temperature sensor.

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